| blob | 7efb7d51054f37e634599f5c92555d1d05cafcef |
1 #!@PERL@ -w
2 # -*- perl -*-
3 # @configure_input@
5 eval 'case $# in 0) exec @PERL@ -S "$0";; *) exec @PERL@ -S "$0" "$@";; esac'
6 if 0;
8 # automake - create Makefile.in from Makefile.am
9 # Copyright (C) 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002,
10 # 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011 Free Software
11 # Foundation, Inc.
13 # This program is free software; you can redistribute it and/or modify
14 # it under the terms of the GNU General Public License as published by
15 # the Free Software Foundation; either version 2, or (at your option)
16 # any later version.
18 # This program is distributed in the hope that it will be useful,
19 # but WITHOUT ANY WARRANTY; without even the implied warranty of
20 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
21 # GNU General Public License for more details.
23 # You should have received a copy of the GNU General Public License
24 # along with this program. If not, see <http://www.gnu.org/licenses/>.
26 # Originally written by David Mackenzie <djm@gnu.ai.mit.edu>.
27 # Perl reimplementation by Tom Tromey <tromey@redhat.com>, and
28 # Alexandre Duret-Lutz <adl@gnu.org>.
30 package Language;
32 BEGIN
33 {
34 my $perllibdir = $ENV{'perllibdir'} || '@datadir@/@PACKAGE@-@APIVERSION@';
35 unshift @INC, (split '@PATH_SEPARATOR@', $perllibdir);
37 # Override SHELL. This is required on DJGPP so that system() uses
38 # bash, not COMMAND.COM which doesn't quote arguments properly.
39 # Other systems aren't expected to use $SHELL when Automake
40 # runs, but it should be safe to drop the `if DJGPP' guard if
41 # it turns up other systems need the same thing. After all,
42 # if SHELL is used, ./configure's SHELL is always better than
43 # the user's SHELL (which may be something like tcsh).
44 $ENV{'SHELL'} = '@SHELL@' if exists $ENV{'DJDIR'};
45 }
47 use Automake::Struct;
48 struct (# Short name of the language (c, f77...).
49 'name' => "\$",
50 # Nice name of the language (C, Fortran 77...).
51 'Name' => "\$",
53 # List of configure variables which must be defined.
54 'config_vars' => '@',
56 'ansi' => "\$",
57 # `pure' is `1' or `'. A `pure' language is one where, if
58 # all the files in a directory are of that language, then we
59 # do not require the C compiler or any code to call it.
60 'pure' => "\$",
62 'autodep' => "\$",
64 # Name of the compiling variable (COMPILE).
65 'compiler' => "\$",
66 # Content of the compiling variable.
67 'compile' => "\$",
68 # Flag to require compilation without linking (-c).
69 'compile_flag' => "\$",
70 'extensions' => '@',
71 # A subroutine to compute a list of possible extensions of
72 # the product given the input extensions.
73 # (defaults to a subroutine which returns ('.$(OBJEXT)', '.lo'))
74 'output_extensions' => "\$",
75 # A list of flag variables used in 'compile'.
76 # (defaults to [])
77 'flags' => "@",
79 # Any tag to pass to libtool while compiling.
80 'libtool_tag' => "\$",
82 # The file to use when generating rules for this language.
83 # The default is 'depend2'.
84 'rule_file' => "\$",
86 # Name of the linking variable (LINK).
87 'linker' => "\$",
88 # Content of the linking variable.
89 'link' => "\$",
91 # Name of the compiler variable (CC).
92 'ccer' => "\$",
94 # Name of the linker variable (LD).
95 'lder' => "\$",
96 # Content of the linker variable ($(CC)).
97 'ld' => "\$",
99 # Flag to specify the output file (-o).
100 'output_flag' => "\$",
101 '_finish' => "\$",
103 # This is a subroutine which is called whenever we finally
104 # determine the context in which a source file will be
105 # compiled.
106 '_target_hook' => "\$",
108 # If TRUE, nodist_ sources will be compiled using specific rules
109 # (i.e. not inference rules). The default is FALSE.
110 'nodist_specific' => "\$");
113 sub finish ($)
114 {
115 my ($self) = @_;
116 if (defined $self->_finish)
117 {
118 &{$self->_finish} (@_);
119 }
120 }
122 sub target_hook ($$$$%)
123 {
124 my ($self) = @_;
125 if (defined $self->_target_hook)
126 {
127 &{$self->_target_hook} (@_);
128 }
129 }
131 package Automake;
133 use strict;
134 use Automake::Config;
135 BEGIN
136 {
137 if ($perl_threads)
138 {
139 require threads;
140 import threads;
141 require Thread::Queue;
142 import Thread::Queue;
143 }
144 }
145 use Automake::General;
146 use Automake::XFile;
147 use Automake::Channels;
148 use Automake::ChannelDefs;
149 use Automake::Configure_ac;
150 use Automake::FileUtils;
151 use Automake::Location;
152 use Automake::Condition qw/TRUE FALSE/;
153 use Automake::DisjConditions;
154 use Automake::Options;
155 use Automake::Version;
156 use Automake::Variable;
157 use Automake::VarDef;
158 use Automake::Rule;
159 use Automake::RuleDef;
160 use Automake::Wrap 'makefile_wrap';
161 use File::Basename;
162 use File::Spec;
163 use Carp;
165 ## ----------- ##
166 ## Constants. ##
167 ## ----------- ##
169 # Some regular expressions. One reason to put them here is that it
170 # makes indentation work better in Emacs.
172 # Writing singled-quoted-$-terminated regexes is a pain because
173 # perl-mode thinks of $' as the ${'} variable (instead of a $ followed
174 # by a closing quote. Letting perl-mode think the quote is not closed
175 # leads to all sort of misindentations. On the other hand, defining
176 # regexes as double-quoted strings is far less readable. So usually
177 # we will write:
178 #
179 # $REGEX = '^regex_value' . "\$";
181 my $IGNORE_PATTERN = '^\s*##([^#\n].*)?\n';
182 my $WHITE_PATTERN = '^\s*' . "\$";
183 my $COMMENT_PATTERN = '^#';
184 my $TARGET_PATTERN='[$a-zA-Z0-9_.@%][-.a-zA-Z0-9_(){}/$+@%]*';
185 # A rule has three parts: a list of targets, a list of dependencies,
186 # and optionally actions.
187 my $RULE_PATTERN =
188 "^($TARGET_PATTERN(?:(?:\\\\\n|\\s)+$TARGET_PATTERN)*) *:([^=].*|)\$";
190 # Only recognize leading spaces, not leading tabs. If we recognize
191 # leading tabs here then we need to make the reader smarter, because
192 # otherwise it will think rules like `foo=bar; \' are errors.
193 my $ASSIGNMENT_PATTERN = '^ *([^ \t=:+]*)\s*([:+]?)=\s*(.*)' . "\$";
194 # This pattern recognizes a Gnits version id and sets $1 if the
195 # release is an alpha release. We also allow a suffix which can be
196 # used to extend the version number with a "fork" identifier.
197 my $GNITS_VERSION_PATTERN = '\d+\.\d+([a-z]|\.\d+)?(-[A-Za-z0-9]+)?';
199 my $IF_PATTERN = '^if\s+(!?)\s*([A-Za-z][A-Za-z0-9_]*)\s*(?:#.*)?' . "\$";
200 my $ELSE_PATTERN =
201 '^else(?:\s+(!?)\s*([A-Za-z][A-Za-z0-9_]*))?\s*(?:#.*)?' . "\$";
202 my $ENDIF_PATTERN =
203 '^endif(?:\s+(!?)\s*([A-Za-z][A-Za-z0-9_]*))?\s*(?:#.*)?' . "\$";
204 my $PATH_PATTERN = '(\w|[+/.-])+';
205 # This will pass through anything not of the prescribed form.
206 my $INCLUDE_PATTERN = ('^include\s+'
207 . '((\$\(top_srcdir\)/' . $PATH_PATTERN . ')'
208 . '|(\$\(srcdir\)/' . $PATH_PATTERN . ')'
209 . '|([^/\$]' . $PATH_PATTERN . '))\s*(#.*)?' . "\$");
211 # Match `-d' as a command-line argument in a string.
212 my $DASH_D_PATTERN = "(^|\\s)-d(\\s|\$)";
213 # Directories installed during 'install-exec' phase.
214 my $EXEC_DIR_PATTERN =
215 '^(?:bin|sbin|libexec|sysconf|localstate|lib|pkglib|.*exec.*)' . "\$";
217 # Values for AC_CANONICAL_*
218 use constant AC_CANONICAL_BUILD => 1;
219 use constant AC_CANONICAL_HOST => 2;
220 use constant AC_CANONICAL_TARGET => 3;
222 # Values indicating when something should be cleaned.
223 use constant MOSTLY_CLEAN => 0;
224 use constant CLEAN => 1;
225 use constant DIST_CLEAN => 2;
226 use constant MAINTAINER_CLEAN => 3;
228 # Libtool files.
229 my @libtool_files = qw(ltmain.sh config.guess config.sub);
230 # ltconfig appears here for compatibility with old versions of libtool.
231 my @libtool_sometimes = qw(ltconfig ltcf-c.sh ltcf-cxx.sh ltcf-gcj.sh);
233 # Commonly found files we look for and automatically include in
234 # DISTFILES.
235 my @common_files =
236 (qw(ABOUT-GNU ABOUT-NLS AUTHORS BACKLOG COPYING COPYING.DOC COPYING.LIB
237 COPYING.LESSER ChangeLog INSTALL NEWS README THANKS TODO
238 ansi2knr.1 ansi2knr.c compile config.guess config.rpath config.sub
239 depcomp elisp-comp install-sh libversion.in mdate-sh missing
240 mkinstalldirs py-compile texinfo.tex ylwrap),
241 @libtool_files, @libtool_sometimes);
243 # Commonly used files we auto-include, but only sometimes. This list
244 # is used for the --help output only.
245 my @common_sometimes =
246 qw(aclocal.m4 acconfig.h config.h.top config.h.bot configure
247 configure.ac configure.in stamp-vti);
249 # Standard directories from the GNU Coding Standards, and additional
250 # pkg* directories from Automake. Stored in a hash for fast member check.
251 my %standard_prefix =
252 map { $_ => 1 } (qw(bin data dataroot doc dvi exec html include info
253 lib libexec lisp locale localstate man man1 man2
254 man3 man4 man5 man6 man7 man8 man9 oldinclude pdf
255 pkgdata pkginclude pkglib pkglibexec ps sbin
256 sharedstate sysconf));
258 # Copyright on generated Makefile.ins.
259 my $gen_copyright = "\
260 # Copyright (C) 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002,
261 # 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011 Free Software
262 # Foundation, Inc.
263 # This Makefile.in is free software; the Free Software Foundation
264 # gives unlimited permission to copy and/or distribute it,
265 # with or without modifications, as long as this notice is preserved.
267 # This program is distributed in the hope that it will be useful,
268 # but WITHOUT ANY WARRANTY, to the extent permitted by law; without
269 # even the implied warranty of MERCHANTABILITY or FITNESS FOR A
270 # PARTICULAR PURPOSE.
271 ";
273 # These constants are returned by the lang_*_rewrite functions.
274 # LANG_SUBDIR means that the resulting object file should be in a
275 # subdir if the source file is. In this case the file name cannot
276 # have `..' components.
277 use constant LANG_IGNORE => 0;
278 use constant LANG_PROCESS => 1;
279 use constant LANG_SUBDIR => 2;
281 # These are used when keeping track of whether an object can be built
282 # by two different paths.
283 use constant COMPILE_LIBTOOL => 1;
284 use constant COMPILE_ORDINARY => 2;
286 # We can't always associate a location to a variable or a rule,
287 # when it's defined by Automake. We use INTERNAL in this case.
288 use constant INTERNAL => new Automake::Location;
290 # Serialization keys for message queues.
291 use constant QUEUE_MESSAGE => "msg";
292 use constant QUEUE_CONF_FILE => "conf file";
293 use constant QUEUE_LOCATION => "location";
294 use constant QUEUE_STRING => "string";
295 \f
297 ## ---------------------------------- ##
298 ## Variables related to the options. ##
299 ## ---------------------------------- ##
301 # TRUE if we should always generate Makefile.in.
302 my $force_generation = 1;
304 # From the Perl manual.
305 my $symlink_exists = (eval 'symlink ("", "");', $@ eq '');
307 # TRUE if missing standard files should be installed.
308 my $add_missing = 0;
310 # TRUE if we should copy missing files; otherwise symlink if possible.
311 my $copy_missing = 0;
313 # TRUE if we should always update files that we know about.
314 my $force_missing = 0;
317 ## ---------------------------------------- ##
318 ## Variables filled during files scanning. ##
319 ## ---------------------------------------- ##
321 # Name of the configure.ac file.
322 my $configure_ac;
324 # Files found by scanning configure.ac for LIBOBJS.
325 my %libsources = ();
327 # Names used in AC_CONFIG_HEADER call.
328 my @config_headers = ();
330 # Names used in AC_CONFIG_LINKS call.
331 my @config_links = ();
333 # Directory where output files go. Actually, output files are
334 # relative to this directory.
335 my $output_directory;
337 # List of Makefile.am's to process, and their corresponding outputs.
338 my @input_files = ();
339 my %output_files = ();
341 # Complete list of Makefile.am's that exist.
342 my @configure_input_files = ();
344 # List of files in AC_CONFIG_FILES/AC_OUTPUT without Makefile.am's,
345 # and their outputs.
346 my @other_input_files = ();
347 # Where each AC_CONFIG_FILES/AC_OUTPUT/AC_CONFIG_LINK/AC_CONFIG_HEADER appears.
348 # The keys are the files created by these macros.
349 my %ac_config_files_location = ();
350 # The condition under which AC_CONFIG_FOOS appears.
351 my %ac_config_files_condition = ();
353 # Directory to search for configure-required files. This
354 # will be computed by &locate_aux_dir and can be set using
355 # AC_CONFIG_AUX_DIR in configure.ac.
356 # $CONFIG_AUX_DIR is the `raw' directory, valid only in the source-tree.
357 my $config_aux_dir = '';
358 my $config_aux_dir_set_in_configure_ac = 0;
359 # $AM_CONFIG_AUX_DIR is prefixed with $(top_srcdir), so it can be used
360 # in Makefiles.
361 my $am_config_aux_dir = '';
363 # Directory to search for AC_LIBSOURCE files, as set by AC_CONFIG_LIBOBJ_DIR
364 # in configure.ac.
365 my $config_libobj_dir = '';
367 # Whether AM_GNU_GETTEXT has been seen in configure.ac.
368 my $seen_gettext = 0;
369 # Whether AM_GNU_GETTEXT([external]) is used.
370 my $seen_gettext_external = 0;
371 # Where AM_GNU_GETTEXT appears.
372 my $ac_gettext_location;
373 # Whether AM_GNU_GETTEXT_INTL_SUBDIR has been seen.
374 my $seen_gettext_intl = 0;
376 # Lists of tags supported by Libtool.
377 my %libtool_tags = ();
378 # 1 if Libtool uses LT_SUPPORTED_TAG. If it does, then it also
379 # uses AC_REQUIRE_AUX_FILE.
380 my $libtool_new_api = 0;
382 # Most important AC_CANONICAL_* macro seen so far.
383 my $seen_canonical = 0;
384 # Location of that macro.
385 my $canonical_location;
387 # Where AM_MAINTAINER_MODE appears.
388 my $seen_maint_mode;
390 # Actual version we've seen.
391 my $package_version = '';
393 # Where version is defined.
394 my $package_version_location;
396 # TRUE if we've seen AM_ENABLE_MULTILIB.
397 my $seen_multilib = 0;
399 # TRUE if we've seen AM_PROG_CC_C_O
400 my $seen_cc_c_o = 0;
402 # Location of AC_REQUIRE_AUX_FILE calls, indexed by their argument.
403 my %required_aux_file = ();
405 # Where AM_INIT_AUTOMAKE is called;
406 my $seen_init_automake = 0;
408 # TRUE if we've seen AM_AUTOMAKE_VERSION.
409 my $seen_automake_version = 0;
411 # Hash table of discovered configure substitutions. Keys are names,
412 # values are `FILE:LINE' strings which are used by error message
413 # generation.
414 my %configure_vars = ();
416 # Ignored configure substitutions (i.e., variables not to be output in
417 # Makefile.in)
418 my %ignored_configure_vars = ();
420 # Files included by $configure_ac.
421 my @configure_deps = ();
423 # Greatest timestamp of configure's dependencies.
424 my $configure_deps_greatest_timestamp = 0;
426 # Hash table of AM_CONDITIONAL variables seen in configure.
427 my %configure_cond = ();
429 # This maps extensions onto language names.
430 my %extension_map = ();
432 # List of the DIST_COMMON files we discovered while reading
433 # configure.in
434 my $configure_dist_common = '';
436 # This maps languages names onto objects.
437 my %languages = ();
438 # Maps each linker variable onto a language object.
439 my %link_languages = ();
441 # maps extensions to needed source flags.
442 my %sourceflags = ();
444 # List of targets we must always output.
445 # FIXME: Complete, and remove falsely required targets.
446 my %required_targets =
447 (
448 'all' => 1,
449 'dvi' => 1,
450 'pdf' => 1,
451 'ps' => 1,
452 'info' => 1,
453 'install-info' => 1,
454 'install' => 1,
455 'install-data' => 1,
456 'install-exec' => 1,
457 'uninstall' => 1,
459 # FIXME: Not required, temporary hacks.
460 # Well, actually they are sort of required: the -recursive
461 # targets will run them anyway...
462 'html-am' => 1,
463 'dvi-am' => 1,
464 'pdf-am' => 1,
465 'ps-am' => 1,
466 'info-am' => 1,
467 'install-data-am' => 1,
468 'install-exec-am' => 1,
469 'install-html-am' => 1,
470 'install-dvi-am' => 1,
471 'install-pdf-am' => 1,
472 'install-ps-am' => 1,
473 'install-info-am' => 1,
474 'installcheck-am' => 1,
475 'uninstall-am' => 1,
477 'install-man' => 1,
478 );
480 # Set to 1 if this run will create the Makefile.in that distributes
481 # the files in config_aux_dir.
482 my $automake_will_process_aux_dir = 0;
484 # The name of the Makefile currently being processed.
485 my $am_file = 'BUG';
486 \f
488 ################################################################
490 ## ------------------------------------------ ##
491 ## Variables reset by &initialize_per_input. ##
492 ## ------------------------------------------ ##
494 # Basename and relative dir of the input file.
495 my $am_file_name;
496 my $am_relative_dir;
498 # Same but wrt Makefile.in.
499 my $in_file_name;
500 my $relative_dir;
502 # Relative path to the top directory.
503 my $topsrcdir;
505 # Greatest timestamp of the output's dependencies (excluding
506 # configure's dependencies).
507 my $output_deps_greatest_timestamp;
509 # These variables are used when generating each Makefile.in.
510 # They hold the Makefile.in until it is ready to be printed.
511 my $output_vars;
512 my $output_all;
513 my $output_header;
514 my $output_rules;
515 my $output_trailer;
517 # This is the conditional stack, updated on if/else/endif, and
518 # used to build Condition objects.
519 my @cond_stack;
521 # This holds the set of included files.
522 my @include_stack;
524 # List of dependencies for the obvious targets.
525 my @all;
526 my @check;
527 my @check_tests;
529 # Keys in this hash table are files to delete. The associated
530 # value tells when this should happen (MOSTLY_CLEAN, DIST_CLEAN, etc.)
531 my %clean_files;
533 # Keys in this hash table are object files or other files in
534 # subdirectories which need to be removed. This only holds files
535 # which are created by compilations. The value in the hash indicates
536 # when the file should be removed.
537 my %compile_clean_files;
539 # Keys in this hash table are directories where we expect to build a
540 # libtool object. We use this information to decide what directories
541 # to delete.
542 my %libtool_clean_directories;
544 # Value of `$(SOURCES)', used by tags.am.
545 my @sources;
546 # Sources which go in the distribution.
547 my @dist_sources;
549 # This hash maps object file names onto their corresponding source
550 # file names. This is used to ensure that each object is created
551 # by a single source file.
552 my %object_map;
554 # This hash maps object file names onto an integer value representing
555 # whether this object has been built via ordinary compilation or
556 # libtool compilation (the COMPILE_* constants).
557 my %object_compilation_map;
560 # This keeps track of the directories for which we've already
561 # created dirstamp code. Keys are directories, values are stamp files.
562 # Several keys can share the same stamp files if they are equivalent
563 # (as are `.//foo' and `foo').
564 my %directory_map;
566 # All .P files.
567 my %dep_files;
569 # This is a list of all targets to run during "make dist".
570 my @dist_targets;
572 # Keep track of all programs declared in this Makefile, without
573 # $(EXEEXT). @substitutions@ are not listed.
574 my %known_programs;
575 my %known_libraries;
577 # Keys in this hash are the basenames of files which must depend on
578 # ansi2knr. Values are either the empty string, or the directory in
579 # which the ANSI source file appears; the directory must have a
580 # trailing `/'.
581 my %de_ansi_files;
583 # This keeps track of which extensions we've seen (that we care
584 # about).
585 my %extension_seen;
587 # This is random scratch space for the language finish functions.
588 # Don't randomly overwrite it; examine other uses of keys first.
589 my %language_scratch;
591 # We keep track of which objects need special (per-executable)
592 # handling on a per-language basis.
593 my %lang_specific_files;
595 # This is set when `handle_dist' has finished. Once this happens,
596 # we should no longer push on dist_common.
597 my $handle_dist_run;
599 # Used to store a set of linkers needed to generate the sources currently
600 # under consideration.
601 my %linkers_used;
603 # True if we need `LINK' defined. This is a hack.
604 my $need_link;
606 # Was get_object_extension run?
607 # FIXME: This is a hack. a better switch should be found.
608 my $get_object_extension_was_run;
610 # Record each file processed by make_paragraphs.
611 my %transformed_files;
612 \f
614 ################################################################
616 ## ---------------------------------------------- ##
617 ## Variables not reset by &initialize_per_input. ##
618 ## ---------------------------------------------- ##
620 # Cache each file processed by make_paragraphs.
621 # (This is different from %transformed_files because
622 # %transformed_files is reset for each file while %am_file_cache
623 # it global to the run.)
624 my %am_file_cache;
626 ################################################################
628 # var_SUFFIXES_trigger ($TYPE, $VALUE)
629 # ------------------------------------
630 # This is called by Automake::Variable::define() when SUFFIXES
631 # is defined ($TYPE eq '') or appended ($TYPE eq '+').
632 # The work here needs to be performed as a side-effect of the
633 # macro_define() call because SUFFIXES definitions impact
634 # on $KNOWN_EXTENSIONS_PATTERN which is used used when parsing
635 # the input am file.
636 sub var_SUFFIXES_trigger ($$)
637 {
638 my ($type, $value) = @_;
639 accept_extensions (split (' ', $value));
640 }
641 Automake::Variable::hook ('SUFFIXES', \&var_SUFFIXES_trigger);
643 ################################################################
645 ## --------------------------------- ##
646 ## Forward subroutine declarations. ##
647 ## --------------------------------- ##
648 sub register_language (%);
649 sub file_contents_internal ($$$%);
650 sub define_files_variable ($\@$$);
653 # &initialize_per_input ()
654 # ------------------------
655 # (Re)-Initialize per-Makefile.am variables.
656 sub initialize_per_input ()
657 {
658 reset_local_duplicates ();
660 $am_file_name = undef;
661 $am_relative_dir = undef;
663 $in_file_name = undef;
664 $relative_dir = undef;
665 $topsrcdir = undef;
667 $output_deps_greatest_timestamp = 0;
669 $output_vars = '';
670 $output_all = '';
671 $output_header = '';
672 $output_rules = '';
673 $output_trailer = '';
675 Automake::Options::reset;
676 Automake::Variable::reset;
677 Automake::Rule::reset;
679 @cond_stack = ();
681 @include_stack = ();
683 @all = ();
684 @check = ();
685 @check_tests = ();
687 %clean_files = ();
688 %compile_clean_files = ();
690 # We always include `.'. This isn't strictly correct.
691 %libtool_clean_directories = ('.' => 1);
693 @sources = ();
694 @dist_sources = ();
696 %object_map = ();
697 %object_compilation_map = ();
699 %directory_map = ();
701 %dep_files = ();
703 @dist_targets = ();
705 %known_programs = ();
706 %known_libraries= ();
708 %de_ansi_files = ();
710 %extension_seen = ();
712 %language_scratch = ();
714 %lang_specific_files = ();
716 $handle_dist_run = 0;
718 $need_link = 0;
720 $get_object_extension_was_run = 0;
722 %transformed_files = ();
723 }
726 ################################################################
728 # Initialize our list of languages that are internally supported.
730 # C.
731 register_language ('name' => 'c',
732 'Name' => 'C',
733 'config_vars' => ['CC'],
734 'ansi' => 1,
735 'autodep' => '',
736 'flags' => ['CFLAGS', 'CPPFLAGS'],
737 'ccer' => 'CC',
738 'compiler' => 'COMPILE',
739 'compile' => '$(CC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS) $(CPPFLAGS) $(AM_CFLAGS) $(CFLAGS)',
740 'lder' => 'CCLD',
741 'ld' => '$(CC)',
742 'linker' => 'LINK',
743 'link' => '$(CCLD) $(AM_CFLAGS) $(CFLAGS) $(AM_LDFLAGS) $(LDFLAGS) -o $@',
744 'compile_flag' => '-c',
745 'libtool_tag' => 'CC',
746 'extensions' => ['.c'],
747 '_finish' => \&lang_c_finish);
749 # C++.
750 register_language ('name' => 'cxx',
751 'Name' => 'C++',
752 'config_vars' => ['CXX'],
753 'linker' => 'CXXLINK',
754 'link' => '$(CXXLD) $(AM_CXXFLAGS) $(CXXFLAGS) $(AM_LDFLAGS) $(LDFLAGS) -o $@',
755 'autodep' => 'CXX',
756 'flags' => ['CXXFLAGS', 'CPPFLAGS'],
757 'compile' => '$(CXX) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS) $(CPPFLAGS) $(AM_CXXFLAGS) $(CXXFLAGS)',
758 'ccer' => 'CXX',
759 'compiler' => 'CXXCOMPILE',
760 'compile_flag' => '-c',
761 'output_flag' => '-o',
762 'libtool_tag' => 'CXX',
763 'lder' => 'CXXLD',
764 'ld' => '$(CXX)',
765 'pure' => 1,
766 'extensions' => ['.c++', '.cc', '.cpp', '.cxx', '.C']);
768 # Objective C.
769 register_language ('name' => 'objc',
770 'Name' => 'Objective C',
771 'config_vars' => ['OBJC'],
772 'linker' => 'OBJCLINK',
773 'link' => '$(OBJCLD) $(AM_OBJCFLAGS) $(OBJCFLAGS) $(AM_LDFLAGS) $(LDFLAGS) -o $@',
774 'autodep' => 'OBJC',
775 'flags' => ['OBJCFLAGS', 'CPPFLAGS'],
776 'compile' => '$(OBJC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS) $(CPPFLAGS) $(AM_OBJCFLAGS) $(OBJCFLAGS)',
777 'ccer' => 'OBJC',
778 'compiler' => 'OBJCCOMPILE',
779 'compile_flag' => '-c',
780 'output_flag' => '-o',
781 'lder' => 'OBJCLD',
782 'ld' => '$(OBJC)',
783 'pure' => 1,
784 'extensions' => ['.m']);
786 # Unified Parallel C.
787 register_language ('name' => 'upc',
788 'Name' => 'Unified Parallel C',
789 'config_vars' => ['UPC'],
790 'linker' => 'UPCLINK',
791 'link' => '$(UPCLD) $(AM_UPCFLAGS) $(UPCFLAGS) $(AM_LDFLAGS) $(LDFLAGS) -o $@',
792 'autodep' => 'UPC',
793 'flags' => ['UPCFLAGS', 'CPPFLAGS'],
794 'compile' => '$(UPC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS) $(CPPFLAGS) $(AM_UPCFLAGS) $(UPCFLAGS)',
795 'ccer' => 'UPC',
796 'compiler' => 'UPCCOMPILE',
797 'compile_flag' => '-c',
798 'output_flag' => '-o',
799 'lder' => 'UPCLD',
800 'ld' => '$(UPC)',
801 'pure' => 1,
802 'extensions' => ['.upc']);
804 # Headers.
805 register_language ('name' => 'header',
806 'Name' => 'Header',
807 'extensions' => ['.h', '.H', '.hxx', '.h++', '.hh',
808 '.hpp', '.inc'],
809 # No output.
810 'output_extensions' => sub { return () },
811 # Nothing to do.
812 '_finish' => sub { });
814 # Vala
815 register_language ('name' => 'vala',
816 'Name' => 'Vala',
817 'config_vars' => ['VALAC'],
818 'flags' => [],
819 'compile' => '$(VALAC) $(AM_VALAFLAGS) $(VALAFLAGS)',
820 'ccer' => 'VALAC',
821 'compiler' => 'VALACOMPILE',
822 'extensions' => ['.vala'],
823 'output_extensions' => sub { (my $ext = $_[0]) =~ s/vala$/c/;
824 return ($ext,) },
825 'rule_file' => 'vala',
826 '_finish' => \&lang_vala_finish,
827 '_target_hook' => \&lang_vala_target_hook,
828 'nodist_specific' => 1);
830 # Yacc (C & C++).
831 register_language ('name' => 'yacc',
832 'Name' => 'Yacc',
833 'config_vars' => ['YACC'],
834 'flags' => ['YFLAGS'],
835 'compile' => '$(YACC) $(AM_YFLAGS) $(YFLAGS)',
836 'ccer' => 'YACC',
837 'compiler' => 'YACCCOMPILE',
838 'extensions' => ['.y'],
839 'output_extensions' => sub { (my $ext = $_[0]) =~ tr/y/c/;
840 return ($ext,) },
841 'rule_file' => 'yacc',
842 '_finish' => \&lang_yacc_finish,
843 '_target_hook' => \&lang_yacc_target_hook,
844 'nodist_specific' => 1);
845 register_language ('name' => 'yaccxx',
846 'Name' => 'Yacc (C++)',
847 'config_vars' => ['YACC'],
848 'rule_file' => 'yacc',
849 'flags' => ['YFLAGS'],
850 'ccer' => 'YACC',
851 'compiler' => 'YACCCOMPILE',
852 'compile' => '$(YACC) $(AM_YFLAGS) $(YFLAGS)',
853 'extensions' => ['.y++', '.yy', '.yxx', '.ypp'],
854 'output_extensions' => sub { (my $ext = $_[0]) =~ tr/y/c/;
855 return ($ext,) },
856 '_finish' => \&lang_yacc_finish,
857 '_target_hook' => \&lang_yacc_target_hook,
858 'nodist_specific' => 1);
860 # Lex (C & C++).
861 register_language ('name' => 'lex',
862 'Name' => 'Lex',
863 'config_vars' => ['LEX'],
864 'rule_file' => 'lex',
865 'flags' => ['LFLAGS'],
866 'compile' => '$(LEX) $(AM_LFLAGS) $(LFLAGS)',
867 'ccer' => 'LEX',
868 'compiler' => 'LEXCOMPILE',
869 'extensions' => ['.l'],
870 'output_extensions' => sub { (my $ext = $_[0]) =~ tr/l/c/;
871 return ($ext,) },
872 '_finish' => \&lang_lex_finish,
873 '_target_hook' => \&lang_lex_target_hook,
874 'nodist_specific' => 1);
875 register_language ('name' => 'lexxx',
876 'Name' => 'Lex (C++)',
877 'config_vars' => ['LEX'],
878 'rule_file' => 'lex',
879 'flags' => ['LFLAGS'],
880 'compile' => '$(LEX) $(AM_LFLAGS) $(LFLAGS)',
881 'ccer' => 'LEX',
882 'compiler' => 'LEXCOMPILE',
883 'extensions' => ['.l++', '.ll', '.lxx', '.lpp'],
884 'output_extensions' => sub { (my $ext = $_[0]) =~ tr/l/c/;
885 return ($ext,) },
886 '_finish' => \&lang_lex_finish,
887 '_target_hook' => \&lang_lex_target_hook,
888 'nodist_specific' => 1);
890 # Assembler.
891 register_language ('name' => 'asm',
892 'Name' => 'Assembler',
893 'config_vars' => ['CCAS', 'CCASFLAGS'],
895 'flags' => ['CCASFLAGS'],
896 # Users can set AM_CCASFLAGS to include DEFS, INCLUDES,
897 # or anything else required. They can also set CCAS.
898 # Or simply use Preprocessed Assembler.
899 'compile' => '$(CCAS) $(AM_CCASFLAGS) $(CCASFLAGS)',
900 'ccer' => 'CCAS',
901 'compiler' => 'CCASCOMPILE',
902 'compile_flag' => '-c',
903 'output_flag' => '-o',
904 'extensions' => ['.s'],
906 # With assembly we still use the C linker.
907 '_finish' => \&lang_c_finish);
909 # Preprocessed Assembler.
910 register_language ('name' => 'cppasm',
911 'Name' => 'Preprocessed Assembler',
912 'config_vars' => ['CCAS', 'CCASFLAGS'],
914 'autodep' => 'CCAS',
915 'flags' => ['CCASFLAGS', 'CPPFLAGS'],
916 'compile' => '$(CCAS) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS) $(CPPFLAGS) $(AM_CCASFLAGS) $(CCASFLAGS)',
917 'ccer' => 'CPPAS',
918 'compiler' => 'CPPASCOMPILE',
919 'compile_flag' => '-c',
920 'output_flag' => '-o',
921 'extensions' => ['.S', '.sx'],
923 # With assembly we still use the C linker.
924 '_finish' => \&lang_c_finish);
926 # Fortran 77
927 register_language ('name' => 'f77',
928 'Name' => 'Fortran 77',
929 'config_vars' => ['F77'],
930 'linker' => 'F77LINK',
931 'link' => '$(F77LD) $(AM_FFLAGS) $(FFLAGS) $(AM_LDFLAGS) $(LDFLAGS) -o $@',
932 'flags' => ['FFLAGS'],
933 'compile' => '$(F77) $(AM_FFLAGS) $(FFLAGS)',
934 'ccer' => 'F77',
935 'compiler' => 'F77COMPILE',
936 'compile_flag' => '-c',
937 'output_flag' => '-o',
938 'libtool_tag' => 'F77',
939 'lder' => 'F77LD',
940 'ld' => '$(F77)',
941 'pure' => 1,
942 'extensions' => ['.f', '.for']);
944 # Fortran
945 register_language ('name' => 'fc',
946 'Name' => 'Fortran',
947 'config_vars' => ['FC'],
948 'linker' => 'FCLINK',
949 'link' => '$(FCLD) $(AM_FCFLAGS) $(FCFLAGS) $(AM_LDFLAGS) $(LDFLAGS) -o $@',
950 'flags' => ['FCFLAGS'],
951 'compile' => '$(FC) $(AM_FCFLAGS) $(FCFLAGS)',
952 'ccer' => 'FC',
953 'compiler' => 'FCCOMPILE',
954 'compile_flag' => '-c',
955 'output_flag' => '-o',
956 'libtool_tag' => 'FC',
957 'lder' => 'FCLD',
958 'ld' => '$(FC)',
959 'pure' => 1,
960 'extensions' => ['.f90', '.f95', '.f03', '.f08']);
962 # Preprocessed Fortran
963 register_language ('name' => 'ppfc',
964 'Name' => 'Preprocessed Fortran',
965 'config_vars' => ['FC'],
966 'linker' => 'FCLINK',
967 'link' => '$(FCLD) $(AM_FCFLAGS) $(FCFLAGS) $(AM_LDFLAGS) $(LDFLAGS) -o $@',
968 'lder' => 'FCLD',
969 'ld' => '$(FC)',
970 'flags' => ['FCFLAGS', 'CPPFLAGS'],
971 'ccer' => 'PPFC',
972 'compiler' => 'PPFCCOMPILE',
973 'compile' => '$(FC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS) $(CPPFLAGS) $(AM_FCFLAGS) $(FCFLAGS)',
974 'compile_flag' => '-c',
975 'output_flag' => '-o',
976 'libtool_tag' => 'FC',
977 'pure' => 1,
978 'extensions' => ['.F90','.F95', '.F03', '.F08']);
980 # Preprocessed Fortran 77
981 #
982 # The current support for preprocessing Fortran 77 just involves
983 # passing `$(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS)
984 # $(CPPFLAGS)' as additional flags to the Fortran 77 compiler, since
985 # this is how GNU Make does it; see the `GNU Make Manual, Edition 0.51
986 # for `make' Version 3.76 Beta' (specifically, from info file
987 # `(make)Catalogue of Rules').
988 #
989 # A better approach would be to write an Autoconf test
990 # (i.e. AC_PROG_FPP) for a Fortran 77 preprocessor, because not all
991 # Fortran 77 compilers know how to do preprocessing. The Autoconf
992 # macro AC_PROG_FPP should test the Fortran 77 compiler first for
993 # preprocessing capabilities, and then fall back on cpp (if cpp were
994 # available).
995 register_language ('name' => 'ppf77',
996 'Name' => 'Preprocessed Fortran 77',
997 'config_vars' => ['F77'],
998 'linker' => 'F77LINK',
999 'link' => '$(F77LD) $(AM_FFLAGS) $(FFLAGS) $(AM_LDFLAGS) $(LDFLAGS) -o $@',
1000 'lder' => 'F77LD',
1001 'ld' => '$(F77)',
1002 'flags' => ['FFLAGS', 'CPPFLAGS'],
1003 'ccer' => 'PPF77',
1004 'compiler' => 'PPF77COMPILE',
1005 'compile' => '$(F77) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS) $(CPPFLAGS) $(AM_FFLAGS) $(FFLAGS)',
1006 'compile_flag' => '-c',
1007 'output_flag' => '-o',
1008 'libtool_tag' => 'F77',
1009 'pure' => 1,
1010 'extensions' => ['.F']);
1012 # Ratfor.
1013 register_language ('name' => 'ratfor',
1014 'Name' => 'Ratfor',
1015 'config_vars' => ['F77'],
1016 'linker' => 'F77LINK',
1017 'link' => '$(F77LD) $(AM_FFLAGS) $(FFLAGS) $(AM_LDFLAGS) $(LDFLAGS) -o $@',
1018 'lder' => 'F77LD',
1019 'ld' => '$(F77)',
1020 'flags' => ['RFLAGS', 'FFLAGS'],
1021 # FIXME also FFLAGS.
1022 'compile' => '$(F77) $(AM_FFLAGS) $(FFLAGS) $(AM_RFLAGS) $(RFLAGS)',
1023 'ccer' => 'F77',
1024 'compiler' => 'RCOMPILE',
1025 'compile_flag' => '-c',
1026 'output_flag' => '-o',
1027 'libtool_tag' => 'F77',
1028 'pure' => 1,
1029 'extensions' => ['.r']);
1031 # Java via gcj.
1032 register_language ('name' => 'java',
1033 'Name' => 'Java',
1034 'config_vars' => ['GCJ'],
1035 'linker' => 'GCJLINK',
1036 'link' => '$(GCJLD) $(AM_GCJFLAGS) $(GCJFLAGS) $(AM_LDFLAGS) $(LDFLAGS) -o $@',
1037 'autodep' => 'GCJ',
1038 'flags' => ['GCJFLAGS'],
1039 'compile' => '$(GCJ) $(AM_GCJFLAGS) $(GCJFLAGS)',
1040 'ccer' => 'GCJ',
1041 'compiler' => 'GCJCOMPILE',
1042 'compile_flag' => '-c',
1043 'output_flag' => '-o',
1044 'libtool_tag' => 'GCJ',
1045 'lder' => 'GCJLD',
1046 'ld' => '$(GCJ)',
1047 'pure' => 1,
1048 'extensions' => ['.java', '.class', '.zip', '.jar']);
1050 ################################################################
1052 # Error reporting functions.
1054 # err_am ($MESSAGE, [%OPTIONS])
1055 # -----------------------------
1056 # Uncategorized errors about the current Makefile.am.
1057 sub err_am ($;%)
1058 {
1059 msg_am ('error', @_);
1060 }
1062 # err_ac ($MESSAGE, [%OPTIONS])
1063 # -----------------------------
1064 # Uncategorized errors about configure.ac.
1065 sub err_ac ($;%)
1066 {
1067 msg_ac ('error', @_);
1068 }
1070 # msg_am ($CHANNEL, $MESSAGE, [%OPTIONS])
1071 # ---------------------------------------
1072 # Messages about about the current Makefile.am.
1073 sub msg_am ($$;%)
1074 {
1075 my ($channel, $msg, %opts) = @_;
1076 msg $channel, "${am_file}.am", $msg, %opts;
1077 }
1079 # msg_ac ($CHANNEL, $MESSAGE, [%OPTIONS])
1080 # ---------------------------------------
1081 # Messages about about configure.ac.
1082 sub msg_ac ($$;%)
1083 {
1084 my ($channel, $msg, %opts) = @_;
1085 msg $channel, $configure_ac, $msg, %opts;
1086 }
1088 ################################################################
1090 # subst ($TEXT)
1091 # -------------
1092 # Return a configure-style substitution using the indicated text.
1093 # We do this to avoid having the substitutions directly in automake.in;
1094 # when we do that they are sometimes removed and this causes confusion
1095 # and bugs.
1096 sub subst ($)
1097 {
1098 my ($text) = @_;
1099 return '@' . $text . '@';
1100 }
1102 ################################################################
1105 # $BACKPATH
1106 # &backname ($REL-DIR)
1107 # --------------------
1108 # If I `cd $REL-DIR', then to come back, I should `cd $BACKPATH'.
1109 # For instance `src/foo' => `../..'.
1110 # Works with non strictly increasing paths, i.e., `src/../lib' => `..'.
1111 sub backname ($)
1112 {
1113 my ($file) = @_;
1114 my @res;
1115 foreach (split (/\//, $file))
1116 {
1117 next if $_ eq '.' || $_ eq '';
1118 if ($_ eq '..')
1119 {
1120 pop @res
1121 or prog_error ("trying to reverse path `$file' pointing outside tree");
1122 }
1123 else
1124 {
1125 push (@res, '..');
1126 }
1127 }
1128 return join ('/', @res) || '.';
1129 }
1131 ################################################################
1133 # `silent-rules' mode handling functions.
1135 # verbose_var (NAME)
1136 # ------------------
1137 # The public variable stem used to implement `silent-rules'.
1138 sub verbose_var ($)
1139 {
1140 my ($name) = @_;
1141 return 'AM_V_' . $name;
1142 }
1144 # verbose_private_var (NAME)
1145 # --------------------------
1146 # The naming policy for the private variables for `silent-rules'.
1147 sub verbose_private_var ($)
1148 {
1149 my ($name) = @_;
1150 return 'am__v_' . $name;
1151 }
1153 # define_verbose_var (NAME, VAL)
1154 # ------------------------------
1155 # For `silent-rules' mode, setup VAR and dispatcher, to expand to VAL if silent.
1156 sub define_verbose_var ($$)
1157 {
1158 my ($name, $val) = @_;
1159 my $var = verbose_var ($name);
1160 my $pvar = verbose_private_var ($name);
1161 my $silent_var = $pvar . '_0';
1162 if (option 'silent-rules')
1163 {
1164 # For typical `make's, `configure' replaces AM_V (inside @@) with $(V)
1165 # and AM_DEFAULT_V (inside @@) with $(AM_DEFAULT_VERBOSITY).
1166 # For strict POSIX 2008 `make's, it replaces them with 0 or 1 instead.
1167 # See AM_SILENT_RULES in m4/silent.m4.
1168 define_variable ($var, '$(' . $pvar . '_@'.'AM_V'.'@)', INTERNAL);
1169 define_variable ($pvar . '_', '$(' . $pvar . '_@'.'AM_DEFAULT_V'.'@)', INTERNAL);
1170 Automake::Variable::define ($silent_var, VAR_AUTOMAKE, '', TRUE, $val,
1171 '', INTERNAL, VAR_ASIS)
1172 if (! vardef ($silent_var, TRUE));
1173 }
1174 }
1176 # Above should not be needed in the general automake code.
1178 # verbose_flag (NAME)
1179 # -------------------
1180 # Contents of %VERBOSE%: variable to expand before rule command.
1181 sub verbose_flag ($)
1182 {
1183 my ($name) = @_;
1184 return '$(' . verbose_var ($name) . ')'
1185 if (option 'silent-rules');
1186 return '';
1187 }
1189 sub verbose_nodep_flag ($)
1190 {
1191 my ($name) = @_;
1192 return '$(' . verbose_var ($name) . subst ('am__nodep') . ')'
1193 if (option 'silent-rules');
1194 return '';
1195 }
1197 # silent_flag
1198 # -----------
1199 # Contents of %SILENT%: variable to expand to `@' when silent.
1200 sub silent_flag ()
1201 {
1202 return verbose_flag ('at');
1203 }
1205 # define_verbose_tagvar (NAME)
1206 # ----------------------------
1207 # Engage the needed `silent-rules' machinery for tag NAME.
1208 sub define_verbose_tagvar ($)
1209 {
1210 my ($name) = @_;
1211 if (option 'silent-rules')
1212 {
1213 define_verbose_var ($name, '@echo " '. $name . ' ' x (6 - length ($name)) . '" $@;');
1214 define_verbose_var ('at', '@');
1215 }
1216 }
1218 # define_verbose_libtool
1219 # ----------------------
1220 # Engage the needed `silent-rules' machinery for `libtool --silent'.
1221 sub define_verbose_libtool ()
1222 {
1223 define_verbose_var ('lt', '--silent');
1224 return verbose_flag ('lt');
1225 }
1228 ################################################################
1231 # Handle AUTOMAKE_OPTIONS variable. Return 1 on error, 0 otherwise.
1232 sub handle_options
1233 {
1234 my $var = var ('AUTOMAKE_OPTIONS');
1235 if ($var)
1236 {
1237 if ($var->has_conditional_contents)
1238 {
1239 msg_var ('unsupported', $var,
1240 "`AUTOMAKE_OPTIONS' cannot have conditional contents");
1241 }
1242 foreach my $locvals ($var->value_as_list_recursive (cond_filter => TRUE,
1243 location => 1))
1244 {
1245 my ($loc, $value) = @$locvals;
1246 return 1 if (process_option_list ($loc, $value))
1247 }
1248 }
1250 # Override portability-recursive warning.
1251 switch_warning ('no-portability-recursive')
1252 if option 'silent-rules';
1254 if ($strictness == GNITS)
1255 {
1256 set_option ('readme-alpha', INTERNAL);
1257 set_option ('std-options', INTERNAL);
1258 set_option ('check-news', INTERNAL);
1259 }
1261 return 0;
1262 }
1264 # shadow_unconditionally ($varname, $where)
1265 # -----------------------------------------
1266 # Return a $(variable) that contains all possible values
1267 # $varname can take.
1268 # If the VAR wasn't defined conditionally, return $(VAR).
1269 # Otherwise we create an am__VAR_DIST variable which contains
1270 # all possible values, and return $(am__VAR_DIST).
1271 sub shadow_unconditionally ($$)
1272 {
1273 my ($varname, $where) = @_;
1274 my $var = var $varname;
1275 if ($var->has_conditional_contents)
1276 {
1277 $varname = "am__${varname}_DIST";
1278 my @files = uniq ($var->value_as_list_recursive);
1279 define_pretty_variable ($varname, TRUE, $where, @files);
1280 }
1281 return "\$($varname)"
1282 }
1284 # get_object_extension ($EXTENSION)
1285 # ---------------------------------
1286 # Prefix $EXTENSION with $U if ansi2knr is in use.
1287 sub get_object_extension ($)
1288 {
1289 my ($extension) = @_;
1291 # Check for automatic de-ANSI-fication.
1292 $extension = '$U' . $extension
1293 if option 'ansi2knr';
1295 $get_object_extension_was_run = 1;
1297 return $extension;
1298 }
1300 # check_user_variables (@LIST)
1301 # ----------------------------
1302 # Make sure each variable VAR in @LIST does not exist, suggest using AM_VAR
1303 # otherwise.
1304 sub check_user_variables (@)
1305 {
1306 my @dont_override = @_;
1307 foreach my $flag (@dont_override)
1308 {
1309 my $var = var $flag;
1310 if ($var)
1311 {
1312 for my $cond ($var->conditions->conds)
1313 {
1314 if ($var->rdef ($cond)->owner == VAR_MAKEFILE)
1315 {
1316 msg_cond_var ('gnu', $cond, $flag,
1317 "`$flag' is a user variable, "
1318 . "you should not override it;\n"
1319 . "use `AM_$flag' instead.");
1320 }
1321 }
1322 }
1323 }
1324 }
1326 # Call finish function for each language that was used.
1327 sub handle_languages
1328 {
1329 if (! option 'no-dependencies')
1330 {
1331 # Include auto-dep code. Don't include it if DEP_FILES would
1332 # be empty.
1333 if (&saw_sources_p (0) && keys %dep_files)
1334 {
1335 # Set location of depcomp.
1336 &define_variable ('depcomp',
1337 "\$(SHELL) $am_config_aux_dir/depcomp",
1338 INTERNAL);
1339 &define_variable ('am__depfiles_maybe', 'depfiles', INTERNAL);
1341 require_conf_file ("$am_file.am", FOREIGN, 'depcomp');
1343 my @deplist = sort keys %dep_files;
1344 # Generate each `include' individually. Irix 6 make will
1345 # not properly include several files resulting from a
1346 # variable expansion; generating many separate includes
1347 # seems safest.
1348 $output_rules .= "\n";
1349 foreach my $iter (@deplist)
1350 {
1351 $output_rules .= (subst ('AMDEP_TRUE')
1352 . subst ('am__include')
1353 . ' '
1354 . subst ('am__quote')
1355 . $iter
1356 . subst ('am__quote')
1357 . "\n");
1358 }
1360 # Compute the set of directories to remove in distclean-depend.
1361 my @depdirs = uniq (map { dirname ($_) } @deplist);
1362 $output_rules .= &file_contents ('depend',
1363 new Automake::Location,
1364 DEPDIRS => "@depdirs");
1365 }
1366 }
1367 else
1368 {
1369 &define_variable ('depcomp', '', INTERNAL);
1370 &define_variable ('am__depfiles_maybe', '', INTERNAL);
1371 }
1373 my %done;
1375 # Is the C linker needed?
1376 my $needs_c = 0;
1377 foreach my $ext (sort keys %extension_seen)
1378 {
1379 next unless $extension_map{$ext};
1381 my $lang = $languages{$extension_map{$ext}};
1383 my $rule_file = $lang->rule_file || 'depend2';
1385 # Get information on $LANG.
1386 my $pfx = $lang->autodep;
1387 my $fpfx = ($pfx eq '') ? 'CC' : $pfx;
1389 my ($AMDEP, $FASTDEP) =
1390 (option 'no-dependencies' || $lang->autodep eq 'no')
1391 ? ('FALSE', 'FALSE') : ('AMDEP', "am__fastdep$fpfx");
1393 my $verbose = verbose_flag ($lang->ccer || 'GEN');
1394 my $verbose_nodep = ($AMDEP eq 'FALSE')
1395 ? $verbose : verbose_nodep_flag ($lang->ccer || 'GEN');
1396 my $silent = silent_flag ();
1398 my %transform = ('EXT' => $ext,
1399 'PFX' => $pfx,
1400 'FPFX' => $fpfx,
1401 'AMDEP' => $AMDEP,
1402 'FASTDEP' => $FASTDEP,
1403 '-c' => $lang->compile_flag || '',
1404 # These are not used, but they need to be defined
1405 # so &transform do not complain.
1406 SUBDIROBJ => 0,
1407 'DERIVED-EXT' => 'BUG',
1408 DIST_SOURCE => 1,
1409 VERBOSE => $verbose,
1410 'VERBOSE-NODEP' => $verbose_nodep,
1411 SILENT => $silent,
1412 );
1414 # Generate the appropriate rules for this extension.
1415 if (((! option 'no-dependencies') && $lang->autodep ne 'no')
1416 || defined $lang->compile)
1417 {
1418 # Some C compilers don't support -c -o. Use it only if really
1419 # needed.
1420 my $output_flag = $lang->output_flag || '';
1421 $output_flag = '-o'
1422 if (! $output_flag
1423 && $lang->name eq 'c'
1424 && option 'subdir-objects');
1426 # Compute a possible derived extension.
1427 # This is not used by depend2.am.
1428 my $der_ext = (&{$lang->output_extensions} ($ext))[0];
1430 # When we output an inference rule like `.c.o:' we
1431 # have two cases to consider: either subdir-objects
1432 # is used, or it is not.
1433 #
1434 # In the latter case the rule is used to build objects
1435 # in the current directory, and dependencies always
1436 # go into `./$(DEPDIR)/'. We can hard-code this value.
1437 #
1438 # In the former case the rule can be used to build
1439 # objects in sub-directories too. Dependencies should
1440 # go into the appropriate sub-directories, e.g.,
1441 # `sub/$(DEPDIR)/'. The value of this directory
1442 # needs to be computed on-the-fly.
1443 #
1444 # DEPBASE holds the name of this directory, plus the
1445 # basename part of the object file (extensions Po, TPo,
1446 # Plo, TPlo will be added later as appropriate). It is
1447 # either hardcoded, or a shell variable (`$depbase') that
1448 # will be computed by the rule.
1449 my $depbase =
1450 option ('subdir-objects') ? '$$depbase' : '$(DEPDIR)/$*';
1451 $output_rules .=
1452 file_contents ($rule_file,
1453 new Automake::Location,
1454 %transform,
1455 GENERIC => 1,
1457 'DERIVED-EXT' => $der_ext,
1459 DEPBASE => $depbase,
1460 BASE => '$*',
1461 SOURCE => '$<',
1462 SOURCEFLAG => $sourceflags{$ext} || '',
1463 OBJ => '$@',
1464 OBJOBJ => '$@',
1465 LTOBJ => '$@',
1467 COMPILE => '$(' . $lang->compiler . ')',
1468 LTCOMPILE => '$(LT' . $lang->compiler . ')',
1469 -o => $output_flag,
1470 SUBDIROBJ => !! option 'subdir-objects');
1471 }
1473 # Now include code for each specially handled object with this
1474 # language.
1475 my %seen_files = ();
1476 foreach my $file (@{$lang_specific_files{$lang->name}})
1477 {
1478 my ($derived, $source, $obj, $myext, $srcext, %file_transform) = @$file;
1480 # We might see a given object twice, for instance if it is
1481 # used under different conditions.
1482 next if defined $seen_files{$obj};
1483 $seen_files{$obj} = 1;
1485 prog_error ("found " . $lang->name .
1486 " in handle_languages, but compiler not defined")
1487 unless defined $lang->compile;
1489 my $obj_compile = $lang->compile;
1491 # Rewrite each occurrence of `AM_$flag' in the compile
1492 # rule into `${derived}_$flag' if it exists.
1493 for my $flag (@{$lang->flags})
1494 {
1495 my $val = "${derived}_$flag";
1496 $obj_compile =~ s/\(AM_$flag\)/\($val\)/
1497 if set_seen ($val);
1498 }
1500 my $libtool_tag = '';
1501 if ($lang->libtool_tag && exists $libtool_tags{$lang->libtool_tag})
1502 {
1503 $libtool_tag = '--tag=' . $lang->libtool_tag . ' '
1504 }
1506 my $ptltflags = "${derived}_LIBTOOLFLAGS";
1507 $ptltflags = 'AM_LIBTOOLFLAGS' unless set_seen $ptltflags;
1509 my $ltverbose = define_verbose_libtool ();
1510 my $obj_ltcompile =
1511 "\$(LIBTOOL) $ltverbose $libtool_tag\$($ptltflags) \$(LIBTOOLFLAGS) "
1512 . "--mode=compile $obj_compile";
1514 # We _need_ `-o' for per object rules.
1515 my $output_flag = $lang->output_flag || '-o';
1517 my $depbase = dirname ($obj);
1518 $depbase = ''
1519 if $depbase eq '.';
1520 $depbase .= '/'
1521 unless $depbase eq '';
1522 $depbase .= '$(DEPDIR)/' . basename ($obj);
1524 # Support for deansified files in subdirectories is ugly
1525 # enough to deserve an explanation.
1526 #
1527 # A Note about normal ansi2knr processing first. On
1528 #
1529 # AUTOMAKE_OPTIONS = ansi2knr
1530 # bin_PROGRAMS = foo
1531 # foo_SOURCES = foo.c
1532 #
1533 # we generate rules similar to:
1534 #
1535 # foo: foo$U.o; link ...
1536 # foo$U.o: foo$U.c; compile ...
1537 # foo_.c: foo.c; ansi2knr ...
1538 #
1539 # this is fairly compact, and will call ansi2knr depending
1540 # on the value of $U (`' or `_').
1541 #
1542 # It's harder with subdir sources. On
1543 #
1544 # AUTOMAKE_OPTIONS = ansi2knr
1545 # bin_PROGRAMS = foo
1546 # foo_SOURCES = sub/foo.c
1547 #
1548 # we have to create foo_.c in the current directory.
1549 # (Unless the user asks 'subdir-objects'.) This is important
1550 # in case the same file (`foo.c') is compiled from other
1551 # directories with different cpp options: foo_.c would
1552 # be preprocessed for only one set of options if it were
1553 # put in the subdirectory.
1554 #
1555 # Because foo$U.o must be built from either foo_.c or
1556 # sub/foo.c we can't be as concise as in the first example.
1557 # Instead we output
1558 #
1559 # foo: foo$U.o; link ...
1560 # foo_.o: foo_.c; compile ...
1561 # foo.o: sub/foo.c; compile ...
1562 # foo_.c: foo.c; ansi2knr ...
1563 #
1564 # This is why we'll now transform $rule_file twice
1565 # if we detect this case.
1566 # A first time we output the compile rule with `$U'
1567 # replaced by `_' and the source directory removed,
1568 # and another time we simply remove `$U'.
1569 #
1570 # Note that at this point $source (as computed by
1571 # &handle_single_transform) is `sub/foo$U.c'.
1572 # This can be confusing: it can be used as-is when
1573 # subdir-objects is set, otherwise you have to know
1574 # it really means `foo_.c' or `sub/foo.c'.
1575 my $objdir = dirname ($obj);
1576 my $srcdir = dirname ($source);
1577 if ($lang->ansi && $obj =~ /\$U/)
1578 {
1579 prog_error "`$obj' contains \$U, but `$source' doesn't."
1580 if $source !~ /\$U/;
1582 (my $source_ = $source) =~ s/\$U/_/g;
1583 # Output an additional rule if _.c and .c are not in
1584 # the same directory. (_.c is always in $objdir.)
1585 if ($objdir ne $srcdir)
1586 {
1587 (my $obj_ = $obj) =~ s/\$U/_/g;
1588 (my $depbase_ = $depbase) =~ s/\$U/_/g;
1589 $source_ = basename ($source_);
1591 $output_rules .=
1592 file_contents ($rule_file,
1593 new Automake::Location,
1594 %transform,
1595 GENERIC => 0,
1597 DEPBASE => $depbase_,
1598 BASE => $obj_,
1599 SOURCE => $source_,
1600 SOURCEFLAG => $sourceflags{$srcext} || '',
1601 OBJ => "$obj_$myext",
1602 OBJOBJ => "$obj_.obj",
1603 LTOBJ => "$obj_.lo",
1605 COMPILE => $obj_compile,
1606 LTCOMPILE => $obj_ltcompile,
1607 -o => $output_flag,
1608 %file_transform);
1609 $obj =~ s/\$U//g;
1610 $depbase =~ s/\$U//g;
1611 $source =~ s/\$U//g;
1612 }
1613 }
1615 $output_rules .=
1616 file_contents ($rule_file,
1617 new Automake::Location,
1618 %transform,
1619 GENERIC => 0,
1621 DEPBASE => $depbase,
1622 BASE => $obj,
1623 SOURCE => $source,
1624 SOURCEFLAG => $sourceflags{$srcext} || '',
1625 # Use $myext and not `.o' here, in case
1626 # we are actually building a new source
1627 # file -- e.g. via yacc.
1628 OBJ => "$obj$myext",
1629 OBJOBJ => "$obj.obj",
1630 LTOBJ => "$obj.lo",
1632 VERBOSE => $verbose,
1633 'VERBOSE-NODEP' => $verbose_nodep,
1634 SILENT => $silent,
1635 COMPILE => $obj_compile,
1636 LTCOMPILE => $obj_ltcompile,
1637 -o => $output_flag,
1638 %file_transform);
1639 }
1641 # The rest of the loop is done once per language.
1642 next if defined $done{$lang};
1643 $done{$lang} = 1;
1645 # Load the language dependent Makefile chunks.
1646 my %lang = map { uc ($_) => 0 } keys %languages;
1647 $lang{uc ($lang->name)} = 1;
1648 $output_rules .= file_contents ('lang-compile',
1649 new Automake::Location,
1650 %transform, %lang);
1652 # If the source to a program consists entirely of code from a
1653 # `pure' language, for instance C++ or Fortran 77, then we
1654 # don't need the C compiler code. However if we run into
1655 # something unusual then we do generate the C code. There are
1656 # probably corner cases here that do not work properly.
1657 # People linking Java code to Fortran code deserve pain.
1658 $needs_c ||= ! $lang->pure;
1660 define_compiler_variable ($lang)
1661 if ($lang->compile);
1663 define_linker_variable ($lang)
1664 if ($lang->link);
1666 require_variables ("$am_file.am", $lang->Name . " source seen",
1667 TRUE, @{$lang->config_vars});
1669 # Call the finisher.
1670 $lang->finish;
1672 # Flags listed in `->flags' are user variables (per GNU Standards),
1673 # they should not be overridden in the Makefile...
1674 my @dont_override = @{$lang->flags};
1675 # ... and so is LDFLAGS.
1676 push @dont_override, 'LDFLAGS' if $lang->link;
1678 check_user_variables @dont_override;
1679 }
1681 # If the project is entirely C++ or entirely Fortran 77 (i.e., 1
1682 # suffix rule was learned), don't bother with the C stuff. But if
1683 # anything else creeps in, then use it.
1684 $needs_c = 1
1685 if $need_link || suffix_rules_count > 1;
1687 if ($needs_c)
1688 {
1689 &define_compiler_variable ($languages{'c'})
1690 unless defined $done{$languages{'c'}};
1691 define_linker_variable ($languages{'c'});
1692 }
1694 # Always provide the user with `AM_V_GEN' for `silent-rules' mode.
1695 define_verbose_tagvar ('GEN');
1696 }
1699 # append_exeext { PREDICATE } $MACRO
1700 # ----------------------------------
1701 # Append $(EXEEXT) to each filename in $F appearing in the Makefile
1702 # variable $MACRO if &PREDICATE($F) is true. @substitutions@ are
1703 # ignored.
1704 #
1705 # This is typically used on all filenames of *_PROGRAMS, and filenames
1706 # of TESTS that are programs.
1707 sub append_exeext (&$)
1708 {
1709 my ($pred, $macro) = @_;
1711 transform_variable_recursively
1712 ($macro, $macro, 'am__EXEEXT', 0, INTERNAL,
1713 sub {
1714 my ($subvar, $val, $cond, $full_cond) = @_;
1715 # Append $(EXEEXT) unless the user did it already, or it's a
1716 # @substitution@.
1717 $val .= '$(EXEEXT)'
1718 if $val !~ /(?:\$\(EXEEXT\)$|^[@]\w+[@]$)/ && &$pred ($val);
1719 return $val;
1720 });
1721 }
1724 # Check to make sure a source defined in LIBOBJS is not explicitly
1725 # mentioned. This is a separate function (as opposed to being inlined
1726 # in handle_source_transform) because it isn't always appropriate to
1727 # do this check.
1728 sub check_libobjs_sources
1729 {
1730 my ($one_file, $unxformed) = @_;
1732 foreach my $prefix ('', 'EXTRA_', 'dist_', 'nodist_',
1733 'dist_EXTRA_', 'nodist_EXTRA_')
1734 {
1735 my @files;
1736 my $varname = $prefix . $one_file . '_SOURCES';
1737 my $var = var ($varname);
1738 if ($var)
1739 {
1740 @files = $var->value_as_list_recursive;
1741 }
1742 elsif ($prefix eq '')
1743 {
1744 @files = ($unxformed . '.c');
1745 }
1746 else
1747 {
1748 next;
1749 }
1751 foreach my $file (@files)
1752 {
1753 err_var ($prefix . $one_file . '_SOURCES',
1754 "automatically discovered file `$file' should not" .
1755 " be explicitly mentioned")
1756 if defined $libsources{$file};
1757 }
1758 }
1759 }
1762 # @OBJECTS
1763 # handle_single_transform ($VAR, $TOPPARENT, $DERIVED, $OBJ, $FILE, %TRANSFORM)
1764 # -----------------------------------------------------------------------------
1765 # Does much of the actual work for handle_source_transform.
1766 # Arguments are:
1767 # $VAR is the name of the variable that the source filenames come from
1768 # $TOPPARENT is the name of the _SOURCES variable which is being processed
1769 # $DERIVED is the name of resulting executable or library
1770 # $OBJ is the object extension (e.g., `$U.lo')
1771 # $FILE the source file to transform
1772 # %TRANSFORM contains extras arguments to pass to file_contents
1773 # when producing explicit rules
1774 # Result is a list of the names of objects
1775 # %linkers_used will be updated with any linkers needed
1776 sub handle_single_transform ($$$$$%)
1777 {
1778 my ($var, $topparent, $derived, $obj, $_file, %transform) = @_;
1779 my @files = ($_file);
1780 my @result = ();
1781 my $nonansi_obj = $obj;
1782 $nonansi_obj =~ s/\$U//g;
1784 # Turn sources into objects. We use a while loop like this
1785 # because we might add to @files in the loop.
1786 while (scalar @files > 0)
1787 {
1788 $_ = shift @files;
1790 # Configure substitutions in _SOURCES variables are errors.
1791 if (/^\@.*\@$/)
1792 {
1793 my $parent_msg = '';
1794 $parent_msg = "\nand is referred to from `$topparent'"
1795 if $topparent ne $var->name;
1796 err_var ($var,
1797 "`" . $var->name . "' includes configure substitution `$_'"
1798 . $parent_msg . ";\nconfigure " .
1799 "substitutions are not allowed in _SOURCES variables");
1800 next;
1801 }
1803 # If the source file is in a subdirectory then the `.o' is put
1804 # into the current directory, unless the subdir-objects option
1805 # is in effect.
1807 # Split file name into base and extension.
1808 next if ! /^(?:(.*)\/)?([^\/]*)($KNOWN_EXTENSIONS_PATTERN)$/;
1809 my $full = $_;
1810 my $directory = $1 || '';
1811 my $base = $2;
1812 my $extension = $3;
1814 # We must generate a rule for the object if it requires its own flags.
1815 my $renamed = 0;
1816 my ($linker, $object);
1818 # This records whether we've seen a derived source file (e.g.
1819 # yacc output).
1820 my $derived_source = 0;
1822 # This holds the `aggregate context' of the file we are
1823 # currently examining. If the file is compiled with
1824 # per-object flags, then it will be the name of the object.
1825 # Otherwise it will be `AM'. This is used by the target hook
1826 # language function.
1827 my $aggregate = 'AM';
1829 $extension = &derive_suffix ($extension, $nonansi_obj);
1830 my $lang;
1831 if ($extension_map{$extension} &&
1832 ($lang = $languages{$extension_map{$extension}}))
1833 {
1834 # Found the language, so see what it says.
1835 &saw_extension ($extension);
1837 # Do we have per-executable flags for this executable?
1838 my $have_per_exec_flags = 0;
1839 my @peflags = @{$lang->flags};
1840 push @peflags, 'LIBTOOLFLAGS' if $nonansi_obj eq '.lo';
1841 foreach my $flag (@peflags)
1842 {
1843 if (set_seen ("${derived}_$flag"))
1844 {
1845 $have_per_exec_flags = 1;
1846 last;
1847 }
1848 }
1850 # Note: computed subr call. The language rewrite function
1851 # should return one of the LANG_* constants. It could
1852 # also return a list whose first value is such a constant
1853 # and whose second value is a new source extension which
1854 # should be applied. This means this particular language
1855 # generates another source file which we must then process
1856 # further.
1857 my $subr = \&{'lang_' . $lang->name . '_rewrite'};
1858 my ($r, $source_extension)
1859 = &$subr ($directory, $base, $extension,
1860 $nonansi_obj, $have_per_exec_flags, $var);
1861 # Skip this entry if we were asked not to process it.
1862 next if $r == LANG_IGNORE;
1864 # Now extract linker and other info.
1865 $linker = $lang->linker;
1867 my $this_obj_ext;
1868 if (defined $source_extension)
1869 {
1870 $this_obj_ext = $source_extension;
1871 $derived_source = 1;
1872 }
1873 elsif ($lang->ansi)
1874 {
1875 $this_obj_ext = $obj;
1876 }
1877 else
1878 {
1879 $this_obj_ext = $nonansi_obj;
1880 }
1881 $object = $base . $this_obj_ext;
1883 if ($have_per_exec_flags)
1884 {
1885 # We have a per-executable flag in effect for this
1886 # object. In this case we rewrite the object's
1887 # name to ensure it is unique.
1889 # We choose the name `DERIVED_OBJECT' to ensure
1890 # (1) uniqueness, and (2) continuity between
1891 # invocations. However, this will result in a
1892 # name that is too long for losing systems, in
1893 # some situations. So we provide _SHORTNAME to
1894 # override.
1896 my $dname = $derived;
1897 my $var = var ($derived . '_SHORTNAME');
1898 if ($var)
1899 {
1900 # FIXME: should use the same Condition as
1901 # the _SOURCES variable. But this is really
1902 # silly overkill -- nobody should have
1903 # conditional shortnames.
1904 $dname = $var->variable_value;
1905 }
1906 $object = $dname . '-' . $object;
1908 prog_error ($lang->name . " flags defined without compiler")
1909 if ! defined $lang->compile;
1911 $renamed = 1;
1912 }
1914 # If rewrite said it was ok, put the object into a
1915 # subdir.
1916 if ($r == LANG_SUBDIR && $directory ne '')
1917 {
1918 $object = $directory . '/' . $object;
1919 }
1921 # If the object file has been renamed (because per-target
1922 # flags are used) we cannot compile the file with an
1923 # inference rule: we need an explicit rule.
1924 #
1925 # If the source is in a subdirectory and the object is in
1926 # the current directory, we also need an explicit rule.
1927 #
1928 # If both source and object files are in a subdirectory
1929 # (this happens when the subdir-objects option is used),
1930 # then the inference will work.
1931 #
1932 # The latter case deserves a historical note. When the
1933 # subdir-objects option was added on 1999-04-11 it was
1934 # thought that inferences rules would work for
1935 # subdirectory objects too. Later, on 1999-11-22,
1936 # automake was changed to output explicit rules even for
1937 # subdir-objects. Nobody remembers why, but this occurred
1938 # soon after the merge of the user-dep-gen-branch so it
1939 # might be related. In late 2003 people complained about
1940 # the size of the generated Makefile.ins (libgcj, with
1941 # 2200+ subdir objects was reported to have a 9MB
1942 # Makefile), so we now rely on inference rules again.
1943 # Maybe we'll run across the same issue as in the past,
1944 # but at least this time we can document it. However since
1945 # dependency tracking has evolved it is possible that
1946 # our old problem no longer exists.
1947 # Using inference rules for subdir-objects has been tested
1948 # with GNU make, Solaris make, Ultrix make, BSD make,
1949 # HP-UX make, and OSF1 make successfully.
1950 if ($renamed
1951 || ($directory ne '' && ! option 'subdir-objects')
1952 # We must also use specific rules for a nodist_ source
1953 # if its language requests it.
1954 || ($lang->nodist_specific && ! $transform{'DIST_SOURCE'}))
1955 {
1956 my $obj_sans_ext = substr ($object, 0,
1957 - length ($this_obj_ext));
1958 my $full_ansi;
1959 if ($directory ne '')
1960 {
1961 $full_ansi = $directory . '/' . $base . $extension;
1962 }
1963 else
1964 {
1965 $full_ansi = $base . $extension;
1966 }
1968 if ($lang->ansi && option 'ansi2knr')
1969 {
1970 $full_ansi =~ s/$KNOWN_EXTENSIONS_PATTERN$/\$U$&/;
1971 $obj_sans_ext .= '$U';
1972 }
1974 my @specifics = ($full_ansi, $obj_sans_ext,
1975 # Only use $this_obj_ext in the derived
1976 # source case because in the other case we
1977 # *don't* want $(OBJEXT) to appear here.
1978 ($derived_source ? $this_obj_ext : '.o'),
1979 $extension);
1981 # If we renamed the object then we want to use the
1982 # per-executable flag name. But if this is simply a
1983 # subdir build then we still want to use the AM_ flag
1984 # name.
1985 if ($renamed)
1986 {
1987 unshift @specifics, $derived;
1988 $aggregate = $derived;
1989 }
1990 else
1991 {
1992 unshift @specifics, 'AM';
1993 }
1995 # Each item on this list is a reference to a list consisting
1996 # of four values followed by additional transform flags for
1997 # file_contents. The four values are the derived flag prefix
1998 # (e.g. for `foo_CFLAGS', it is `foo'), the name of the
1999 # source file, the base name of the output file, and
2000 # the extension for the object file.
2001 push (@{$lang_specific_files{$lang->name}},
2002 [@specifics, %transform]);
2003 }
2004 }
2005 elsif ($extension eq $nonansi_obj)
2006 {
2007 # This is probably the result of a direct suffix rule.
2008 # In this case we just accept the rewrite.
2009 $object = "$base$extension";
2010 $object = "$directory/$object" if $directory ne '';
2011 $linker = '';
2012 }
2013 else
2014 {
2015 # No error message here. Used to have one, but it was
2016 # very unpopular.
2017 # FIXME: we could potentially do more processing here,
2018 # perhaps treating the new extension as though it were a
2019 # new source extension (as above). This would require
2020 # more restructuring than is appropriate right now.
2021 next;
2022 }
2024 err_am "object `$object' created by `$full' and `$object_map{$object}'"
2025 if (defined $object_map{$object}
2026 && $object_map{$object} ne $full);
2028 my $comp_val = (($object =~ /\.lo$/)
2029 ? COMPILE_LIBTOOL : COMPILE_ORDINARY);
2030 (my $comp_obj = $object) =~ s/\.lo$/.\$(OBJEXT)/;
2031 if (defined $object_compilation_map{$comp_obj}
2032 && $object_compilation_map{$comp_obj} != 0
2033 # Only see the error once.
2034 && ($object_compilation_map{$comp_obj}
2035 != (COMPILE_LIBTOOL | COMPILE_ORDINARY))
2036 && $object_compilation_map{$comp_obj} != $comp_val)
2037 {
2038 err_am "object `$comp_obj' created both with libtool and without";
2039 }
2040 $object_compilation_map{$comp_obj} |= $comp_val;
2042 if (defined $lang)
2043 {
2044 # Let the language do some special magic if required.
2045 $lang->target_hook ($aggregate, $object, $full, %transform);
2046 }
2048 if ($derived_source)
2049 {
2050 prog_error ($lang->name . " has automatic dependency tracking")
2051 if $lang->autodep ne 'no';
2052 # Make sure this new source file is handled next. That will
2053 # make it appear to be at the right place in the list.
2054 unshift (@files, $object);
2055 # Distribute derived sources unless the source they are
2056 # derived from is not.
2057 &push_dist_common ($object)
2058 unless ($topparent =~ /^(?:nobase_)?nodist_/);
2059 next;
2060 }
2062 $linkers_used{$linker} = 1;
2064 push (@result, $object);
2066 if (! defined $object_map{$object})
2067 {
2068 my @dep_list = ();
2069 $object_map{$object} = $full;
2071 # If resulting object is in subdir, we need to make
2072 # sure the subdir exists at build time.
2073 if ($object =~ /\//)
2074 {
2075 # FIXME: check that $DIRECTORY is somewhere in the
2076 # project
2078 # For Java, the way we're handling it right now, a
2079 # `..' component doesn't make sense.
2080 if ($lang && $lang->name eq 'java' && $object =~ /(\/|^)\.\.\//)
2081 {
2082 err_am "`$full' should not contain a `..' component";
2083 }
2085 # Make sure object is removed by `make mostlyclean'.
2086 $compile_clean_files{$object} = MOSTLY_CLEAN;
2087 # If we have a libtool object then we also must remove
2088 # the ordinary .o.
2089 if ($object =~ /\.lo$/)
2090 {
2091 (my $xobj = $object) =~ s,lo$,\$(OBJEXT),;
2092 $compile_clean_files{$xobj} = MOSTLY_CLEAN;
2094 # Remove any libtool object in this directory.
2095 $libtool_clean_directories{$directory} = 1;
2096 }
2098 push (@dep_list, require_build_directory ($directory));
2100 # If we're generating dependencies, we also want
2101 # to make sure that the appropriate subdir of the
2102 # .deps directory is created.
2103 push (@dep_list,
2104 require_build_directory ($directory . '/$(DEPDIR)'))
2105 unless option 'no-dependencies';
2106 }
2108 &pretty_print_rule ($object . ':', "\t", @dep_list)
2109 if scalar @dep_list > 0;
2110 }
2112 # Transform .o or $o file into .P file (for automatic
2113 # dependency code).
2114 # Properly flatten multiple adjacent slashes, as Solaris 10 make
2115 # might fail over them in an include statement.
2116 # Leading double slashes may be special, as per Posix, so deal
2117 # with them carefully.
2118 if ($lang && $lang->autodep ne 'no')
2119 {
2120 my $depfile = $object;
2121 $depfile =~ s/\.([^.]*)$/.P$1/;
2122 $depfile =~ s/\$\(OBJEXT\)$/o/;
2123 my $maybe_extra_leading_slash = '';
2124 $maybe_extra_leading_slash = '/' if $depfile =~ m,^//[^/],;
2125 $depfile =~ s,/+,/,g;
2126 my $basename = basename ($depfile);
2127 # This might make $dirname empty, but we account for that below.
2128 (my $dirname = dirname ($depfile)) =~ s/\/*$//;
2129 $dirname = $maybe_extra_leading_slash . $dirname;
2130 $dep_files{$dirname . '/$(DEPDIR)/' . $basename} = 1;
2131 }
2132 }
2134 return @result;
2135 }
2138 # $LINKER
2139 # define_objects_from_sources ($VAR, $OBJVAR, $NODEFINE, $ONE_FILE,
2140 # $OBJ, $PARENT, $TOPPARENT, $WHERE, %TRANSFORM)
2141 # ---------------------------------------------------------------------------
2142 # Define an _OBJECTS variable for a _SOURCES variable (or subvariable)
2143 #
2144 # Arguments are:
2145 # $VAR is the name of the _SOURCES variable
2146 # $OBJVAR is the name of the _OBJECTS variable if known (otherwise
2147 # it will be generated and returned).
2148 # $NODEFINE is a boolean: if true, $OBJVAR will not be defined (but
2149 # work done to determine the linker will be).
2150 # $ONE_FILE is the canonical (transformed) name of object to build
2151 # $OBJ is the object extension (i.e. either `.o' or `.lo').
2152 # $TOPPARENT is the _SOURCES variable being processed.
2153 # $WHERE context into which this definition is done
2154 # %TRANSFORM extra arguments to pass to file_contents when producing
2155 # rules
2156 #
2157 # Result is a pair ($LINKER, $OBJVAR):
2158 # $LINKER is a boolean, true if a linker is needed to deal with the objects
2159 sub define_objects_from_sources ($$$$$$$%)
2160 {
2161 my ($var, $objvar, $nodefine, $one_file,
2162 $obj, $topparent, $where, %transform) = @_;
2164 my $needlinker = "";
2166 transform_variable_recursively
2167 ($var, $objvar, 'am__objects', $nodefine, $where,
2168 # The transform code to run on each filename.
2169 sub {
2170 my ($subvar, $val, $cond, $full_cond) = @_;
2171 my @trans = handle_single_transform ($subvar, $topparent,
2172 $one_file, $obj, $val,
2173 %transform);
2174 $needlinker = "true" if @trans;
2175 return @trans;
2176 });
2178 return $needlinker;
2179 }
2182 # handle_source_transform ($CANON_TARGET, $TARGET, $OBJEXT, $WHERE, %TRANSFORM)
2183 # -----------------------------------------------------------------------------
2184 # Handle SOURCE->OBJECT transform for one program or library.
2185 # Arguments are:
2186 # canonical (transformed) name of target to build
2187 # actual target of object to build
2188 # object extension (i.e., either `.o' or `$o')
2189 # location of the source variable
2190 # extra arguments to pass to file_contents when producing rules
2191 # Return the name of the linker variable that must be used.
2192 # Empty return means just use `LINK'.
2193 sub handle_source_transform ($$$$%)
2194 {
2195 # one_file is canonical name. unxformed is given name. obj is
2196 # object extension.
2197 my ($one_file, $unxformed, $obj, $where, %transform) = @_;
2199 my $linker = '';
2201 # No point in continuing if _OBJECTS is defined.
2202 return if reject_var ($one_file . '_OBJECTS',
2203 $one_file . '_OBJECTS should not be defined');
2205 my %used_pfx = ();
2206 my $needlinker;
2207 %linkers_used = ();
2208 foreach my $prefix ('', 'EXTRA_', 'dist_', 'nodist_',
2209 'dist_EXTRA_', 'nodist_EXTRA_')
2210 {
2211 my $varname = $prefix . $one_file . "_SOURCES";
2212 my $var = var $varname;
2213 next unless $var;
2215 # We are going to define _OBJECTS variables using the prefix.
2216 # Then we glom them all together. So we can't use the null
2217 # prefix here as we need it later.
2218 my $xpfx = ($prefix eq '') ? 'am_' : $prefix;
2220 # Keep track of which prefixes we saw.
2221 $used_pfx{$xpfx} = 1
2222 unless $prefix =~ /EXTRA_/;
2224 push @sources, "\$($varname)";
2225 push @dist_sources, shadow_unconditionally ($varname, $where)
2226 unless (option ('no-dist') || $prefix =~ /^nodist_/);
2228 $needlinker |=
2229 define_objects_from_sources ($varname,
2230 $xpfx . $one_file . '_OBJECTS',
2231 $prefix =~ /EXTRA_/,
2232 $one_file, $obj, $varname, $where,
2233 DIST_SOURCE => ($prefix !~ /^nodist_/),
2234 %transform);
2235 }
2236 if ($needlinker)
2237 {
2238 $linker ||= &resolve_linker (%linkers_used);
2239 }
2241 my @keys = sort keys %used_pfx;
2242 if (scalar @keys == 0)
2243 {
2244 # The default source for libfoo.la is libfoo.c, but for
2245 # backward compatibility we first look at libfoo_la.c,
2246 # if no default source suffix is given.
2247 my $old_default_source = "$one_file.c";
2248 my $ext_var = var ('AM_DEFAULT_SOURCE_EXT');
2249 my $default_source_ext = $ext_var ? variable_value ($ext_var) : '.c';
2250 msg_var ('unsupported', $ext_var, $ext_var->name . " can assume at most one value")
2251 if $default_source_ext =~ /[\t ]/;
2252 (my $default_source = $unxformed) =~ s,(\.[^./\\]*)?$,$default_source_ext,;
2253 if ($old_default_source ne $default_source
2254 && !$ext_var
2255 && (rule $old_default_source
2256 || rule '$(srcdir)/' . $old_default_source
2257 || rule '${srcdir}/' . $old_default_source
2258 || -f $old_default_source))
2259 {
2260 my $loc = $where->clone;
2261 $loc->pop_context;
2262 msg ('obsolete', $loc,
2263 "the default source for `$unxformed' has been changed "
2264 . "to `$default_source'.\n(Using `$old_default_source' for "
2265 . "backward compatibility.)");
2266 $default_source = $old_default_source;
2267 }
2268 # If a rule exists to build this source with a $(srcdir)
2269 # prefix, use that prefix in our variables too. This is for
2270 # the sake of BSD Make.
2271 if (rule '$(srcdir)/' . $default_source
2272 || rule '${srcdir}/' . $default_source)
2273 {
2274 $default_source = '$(srcdir)/' . $default_source;
2275 }
2277 &define_variable ($one_file . "_SOURCES", $default_source, $where);
2278 push (@sources, $default_source);
2279 push (@dist_sources, $default_source);
2281 %linkers_used = ();
2282 my (@result) =
2283 handle_single_transform ($one_file . '_SOURCES',
2284 $one_file . '_SOURCES',
2285 $one_file, $obj,
2286 $default_source, %transform);
2287 $linker ||= &resolve_linker (%linkers_used);
2288 define_pretty_variable ($one_file . '_OBJECTS', TRUE, $where, @result);
2289 }
2290 else
2291 {
2292 @keys = map { '$(' . $_ . $one_file . '_OBJECTS)' } @keys;
2293 define_pretty_variable ($one_file . '_OBJECTS', TRUE, $where, @keys);
2294 }
2296 # If we want to use `LINK' we must make sure it is defined.
2297 if ($linker eq '')
2298 {
2299 $need_link = 1;
2300 }
2302 return $linker;
2303 }
2306 # handle_lib_objects ($XNAME, $VAR)
2307 # ---------------------------------
2308 # Special-case ALLOCA and LIBOBJS substitutions in _LDADD or _LIBADD variables.
2309 # Also, generate _DEPENDENCIES variable if appropriate.
2310 # Arguments are:
2311 # transformed name of object being built, or empty string if no object
2312 # name of _LDADD/_LIBADD-type variable to examine
2313 # Returns 1 if LIBOBJS seen, 0 otherwise.
2314 sub handle_lib_objects
2315 {
2316 my ($xname, $varname) = @_;
2318 my $var = var ($varname);
2319 prog_error "handle_lib_objects: `$varname' undefined"
2320 unless $var;
2321 prog_error "handle_lib_objects: unexpected variable name `$varname'"
2322 unless $varname =~ /^(.*)(?:LIB|LD)ADD$/;
2323 my $prefix = $1 || 'AM_';
2325 my $seen_libobjs = 0;
2326 my $flagvar = 0;
2328 transform_variable_recursively
2329 ($varname, $xname . '_DEPENDENCIES', 'am__DEPENDENCIES',
2330 ! $xname, INTERNAL,
2331 # Transformation function, run on each filename.
2332 sub {
2333 my ($subvar, $val, $cond, $full_cond) = @_;
2335 if ($val =~ /^-/)
2336 {
2337 # Skip -lfoo and -Ldir silently; these are explicitly allowed.
2338 if ($val !~ /^-[lL]/ &&
2339 # Skip -dlopen and -dlpreopen; these are explicitly allowed
2340 # for Libtool libraries or programs. (Actually we are a bit
2341 # lax here since this code also applies to non-libtool
2342 # libraries or programs, for which -dlopen and -dlopreopen
2343 # are pure nonsense. Diagnosing this doesn't seem very
2344 # important: the developer will quickly get complaints from
2345 # the linker.)
2346 $val !~ /^-dl(?:pre)?open$/ &&
2347 # Only get this error once.
2348 ! $flagvar)
2349 {
2350 $flagvar = 1;
2351 # FIXME: should display a stack of nested variables
2352 # as context when $var != $subvar.
2353 err_var ($var, "linker flags such as `$val' belong in "
2354 . "`${prefix}LDFLAGS");
2355 }
2356 return ();
2357 }
2358 elsif ($val !~ /^\@.*\@$/)
2359 {
2360 # Assume we have a file of some sort, and output it into the
2361 # dependency variable. Autoconf substitutions are not output;
2362 # rarely is a new dependency substituted into e.g. foo_LDADD
2363 # -- but bad things (e.g. -lX11) are routinely substituted.
2364 # Note that LIBOBJS and ALLOCA are exceptions to this rule,
2365 # and handled specially below.
2366 return $val;
2367 }
2368 elsif ($val =~ /^\@(LT)?LIBOBJS\@$/)
2369 {
2370 handle_LIBOBJS ($subvar, $cond, $1);
2371 $seen_libobjs = 1;
2372 return $val;
2373 }
2374 elsif ($val =~ /^\@(LT)?ALLOCA\@$/)
2375 {
2376 handle_ALLOCA ($subvar, $cond, $1);
2377 return $val;
2378 }
2379 else
2380 {
2381 return ();
2382 }
2383 });
2385 return $seen_libobjs;
2386 }
2388 # handle_LIBOBJS_or_ALLOCA ($VAR)
2389 # -------------------------------
2390 # Definitions common to LIBOBJS and ALLOCA.
2391 # VAR should be one of LIBOBJS, LTLIBOBJS, ALLOCA, or LTALLOCA.
2392 sub handle_LIBOBJS_or_ALLOCA ($)
2393 {
2394 my ($var) = @_;
2396 my $dir = '';
2398 # If LIBOBJS files must be built in another directory we have
2399 # to define LIBOBJDIR and ensure the files get cleaned.
2400 # Otherwise LIBOBJDIR can be left undefined, and the cleaning
2401 # is achieved by `rm -f *.$(OBJEXT)' in compile.am.
2402 if ($config_libobj_dir
2403 && $relative_dir ne $config_libobj_dir)
2404 {
2405 if (option 'subdir-objects')
2406 {
2407 # In the top-level Makefile we do not use $(top_builddir), because
2408 # we are already there, and since the targets are built without
2409 # a $(top_builddir), it helps BSD Make to match them with
2410 # dependencies.
2411 $dir = "$config_libobj_dir/" if $config_libobj_dir ne '.';
2412 $dir = "$topsrcdir/$dir" if $relative_dir ne '.';
2413 define_variable ('LIBOBJDIR', "$dir", INTERNAL);
2414 $clean_files{"\$($var)"} = MOSTLY_CLEAN;
2415 # If LTLIBOBJS is used, we must also clear LIBOBJS (which might
2416 # be created by libtool as a side-effect of creating LTLIBOBJS).
2417 $clean_files{"\$($var)"} = MOSTLY_CLEAN if $var =~ s/^LT//;
2418 }
2419 else
2420 {
2421 error ("`\$($var)' cannot be used outside `$config_libobj_dir' if"
2422 . " `subdir-objects' is not set");
2423 }
2424 }
2426 return $dir;
2427 }
2429 sub handle_LIBOBJS ($$$)
2430 {
2431 my ($var, $cond, $lt) = @_;
2432 my $myobjext = $lt ? 'lo' : 'o';
2433 $lt ||= '';
2435 $var->requires_variables ("\@${lt}LIBOBJS\@ used", $lt . 'LIBOBJS')
2436 if ! keys %libsources;
2438 my $dir = handle_LIBOBJS_or_ALLOCA "${lt}LIBOBJS";
2440 foreach my $iter (keys %libsources)
2441 {
2442 if ($iter =~ /\.[cly]$/)
2443 {
2444 &saw_extension ($&);
2445 &saw_extension ('.c');
2446 }
2448 if ($iter =~ /\.h$/)
2449 {
2450 require_libsource_with_macro ($cond, $var, FOREIGN, $iter);
2451 }
2452 elsif ($iter ne 'alloca.c')
2453 {
2454 my $rewrite = $iter;
2455 $rewrite =~ s/\.c$/.P$myobjext/;
2456 $dep_files{$dir . '$(DEPDIR)/' . $rewrite} = 1;
2457 $rewrite = "^" . quotemeta ($iter) . "\$";
2458 # Only require the file if it is not a built source.
2459 my $bs = var ('BUILT_SOURCES');
2460 if (! $bs || ! grep (/$rewrite/, $bs->value_as_list_recursive))
2461 {
2462 require_libsource_with_macro ($cond, $var, FOREIGN, $iter);
2463 }
2464 }
2465 }
2466 }
2468 sub handle_ALLOCA ($$$)
2469 {
2470 my ($var, $cond, $lt) = @_;
2471 my $myobjext = $lt ? 'lo' : 'o';
2472 $lt ||= '';
2473 my $dir = handle_LIBOBJS_or_ALLOCA "${lt}ALLOCA";
2475 $var->requires_variables ("\@${lt}ALLOCA\@ used", $lt . 'ALLOCA');
2476 $dep_files{$dir . '$(DEPDIR)/alloca.P' . $myobjext} = 1;
2477 require_libsource_with_macro ($cond, $var, FOREIGN, 'alloca.c');
2478 &saw_extension ('.c');
2479 }
2481 # Canonicalize the input parameter
2482 sub canonicalize
2483 {
2484 my ($string) = @_;
2485 $string =~ tr/A-Za-z0-9_\@/_/c;
2486 return $string;
2487 }
2489 # Canonicalize a name, and check to make sure the non-canonical name
2490 # is never used. Returns canonical name. Arguments are name and a
2491 # list of suffixes to check for.
2492 sub check_canonical_spelling
2493 {
2494 my ($name, @suffixes) = @_;
2496 my $xname = &canonicalize ($name);
2497 if ($xname ne $name)
2498 {
2499 foreach my $xt (@suffixes)
2500 {
2501 reject_var ("$name$xt", "use `$xname$xt', not `$name$xt'");
2502 }
2503 }
2505 return $xname;
2506 }
2509 # handle_compile ()
2510 # -----------------
2511 # Set up the compile suite.
2512 sub handle_compile ()
2513 {
2514 return
2515 unless $get_object_extension_was_run;
2517 # Boilerplate.
2518 my $default_includes = '';
2519 if (! option 'nostdinc')
2520 {
2521 my @incs = ('-I.', subst ('am__isrc'));
2523 my $var = var 'CONFIG_HEADER';
2524 if ($var)
2525 {
2526 foreach my $hdr (split (' ', $var->variable_value))
2527 {
2528 push @incs, '-I' . dirname ($hdr);
2529 }
2530 }
2531 # We want `-I. -I$(srcdir)', but the latter -I is redundant
2532 # and unaesthetic in non-VPATH builds. We use `-I.@am__isrc@`
2533 # instead. It will be replaced by '-I.' or '-I. -I$(srcdir)'.
2534 # Items in CONFIG_HEADER are never in $(srcdir) so it is safe
2535 # to just put @am__isrc@ right after `-I.', without a space.
2536 ($default_includes = ' ' . uniq (@incs)) =~ s/ @/@/;
2537 }
2539 my (@mostly_rms, @dist_rms);
2540 foreach my $item (sort keys %compile_clean_files)
2541 {
2542 if ($compile_clean_files{$item} == MOSTLY_CLEAN)
2543 {
2544 push (@mostly_rms, "\t-rm -f $item");
2545 }
2546 elsif ($compile_clean_files{$item} == DIST_CLEAN)
2547 {
2548 push (@dist_rms, "\t-rm -f $item");
2549 }
2550 else
2551 {
2552 prog_error 'invalid entry in %compile_clean_files';
2553 }
2554 }
2556 my ($coms, $vars, $rules) =
2557 &file_contents_internal (1, "$libdir/am/compile.am",
2558 new Automake::Location,
2559 ('DEFAULT_INCLUDES' => $default_includes,
2560 'MOSTLYRMS' => join ("\n", @mostly_rms),
2561 'DISTRMS' => join ("\n", @dist_rms)));
2562 $output_vars .= $vars;
2563 $output_rules .= "$coms$rules";
2565 # Check for automatic de-ANSI-fication.
2566 if (option 'ansi2knr')
2567 {
2568 my ($ansi2knr_filename, $ansi2knr_where) = @{option 'ansi2knr'};
2569 my $ansi2knr_dir = '';
2571 require_variables ($ansi2knr_where, "option `ansi2knr' is used",
2572 TRUE, "ANSI2KNR", "U");
2574 # topdir is where ansi2knr should be.
2575 if ($ansi2knr_filename eq 'ansi2knr')
2576 {
2577 # Only require ansi2knr files if they should appear in
2578 # this directory.
2579 require_file ($ansi2knr_where, FOREIGN,
2580 'ansi2knr.c', 'ansi2knr.1');
2582 # ansi2knr needs to be built before subdirs, so unshift it
2583 # rather then pushing it.
2584 unshift (@all, '$(ANSI2KNR)');
2585 }
2586 else
2587 {
2588 $ansi2knr_dir = dirname ($ansi2knr_filename);
2589 }
2591 $output_rules .= &file_contents ('ansi2knr',
2592 new Automake::Location,
2593 'ANSI2KNR-DIR' => $ansi2knr_dir);
2595 }
2596 }
2598 # handle_libtool ()
2599 # -----------------
2600 # Handle libtool rules.
2601 sub handle_libtool
2602 {
2603 return unless var ('LIBTOOL');
2605 # Libtool requires some files, but only at top level.
2606 # (Starting with Libtool 2.0 we do not have to bother. These
2607 # requirements are done with AC_REQUIRE_AUX_FILE.)
2608 require_conf_file_with_macro (TRUE, 'LIBTOOL', FOREIGN, @libtool_files)
2609 if $relative_dir eq '.' && ! $libtool_new_api;
2611 my @libtool_rms;
2612 foreach my $item (sort keys %libtool_clean_directories)
2613 {
2614 my $dir = ($item eq '.') ? '' : "$item/";
2615 # .libs is for Unix, _libs for DOS.
2616 push (@libtool_rms, "\t-rm -rf ${dir}.libs ${dir}_libs");
2617 }
2619 check_user_variables 'LIBTOOLFLAGS';
2621 # Output the libtool compilation rules.
2622 $output_rules .= &file_contents ('libtool',
2623 new Automake::Location,
2624 LTRMS => join ("\n", @libtool_rms));
2625 }
2627 # handle_programs ()
2628 # ------------------
2629 # Handle C programs.
2630 sub handle_programs
2631 {
2632 my @proglist = &am_install_var ('progs', 'PROGRAMS',
2633 'bin', 'sbin', 'libexec', 'pkglibexec',
2634 'noinst', 'check');
2635 return if ! @proglist;
2637 my $seen_global_libobjs =
2638 var ('LDADD') && &handle_lib_objects ('', 'LDADD');
2640 foreach my $pair (@proglist)
2641 {
2642 my ($where, $one_file) = @$pair;
2644 my $seen_libobjs = 0;
2645 my $obj = get_object_extension '.$(OBJEXT)';
2647 $known_programs{$one_file} = $where;
2649 # Canonicalize names and check for misspellings.
2650 my $xname = &check_canonical_spelling ($one_file, '_LDADD', '_LDFLAGS',
2651 '_SOURCES', '_OBJECTS',
2652 '_DEPENDENCIES');
2654 $where->push_context ("while processing program `$one_file'");
2655 $where->set (INTERNAL->get);
2657 my $linker = &handle_source_transform ($xname, $one_file, $obj, $where,
2658 NONLIBTOOL => 1, LIBTOOL => 0);
2660 if (var ($xname . "_LDADD"))
2661 {
2662 $seen_libobjs = &handle_lib_objects ($xname, $xname . '_LDADD');
2663 }
2664 else
2665 {
2666 # User didn't define prog_LDADD override. So do it.
2667 &define_variable ($xname . '_LDADD', '$(LDADD)', $where);
2669 # This does a bit too much work. But we need it to
2670 # generate _DEPENDENCIES when appropriate.
2671 if (var ('LDADD'))
2672 {
2673 $seen_libobjs = &handle_lib_objects ($xname, 'LDADD');
2674 }
2675 }
2677 reject_var ($xname . '_LIBADD',
2678 "use `${xname}_LDADD', not `${xname}_LIBADD'");
2680 set_seen ($xname . '_DEPENDENCIES');
2681 set_seen ($xname . '_LDFLAGS');
2683 # Determine program to use for link.
2684 my($xlink, $vlink) = &define_per_target_linker_variable ($linker, $xname);
2685 $vlink = verbose_flag ($vlink || 'GEN');
2687 # If the resulting program lies into a subdirectory,
2688 # make sure this directory will exist.
2689 my $dirstamp = require_build_directory_maybe ($one_file);
2691 $libtool_clean_directories{dirname ($one_file)} = 1;
2693 $output_rules .= &file_contents ('program',
2694 $where,
2695 PROGRAM => $one_file,
2696 XPROGRAM => $xname,
2697 XLINK => $xlink,
2698 VERBOSE => $vlink,
2699 DIRSTAMP => $dirstamp,
2700 EXEEXT => '$(EXEEXT)');
2702 if ($seen_libobjs || $seen_global_libobjs)
2703 {
2704 if (var ($xname . '_LDADD'))
2705 {
2706 &check_libobjs_sources ($xname, $xname . '_LDADD');
2707 }
2708 elsif (var ('LDADD'))
2709 {
2710 &check_libobjs_sources ($xname, 'LDADD');
2711 }
2712 }
2713 }
2714 }
2717 # handle_libraries ()
2718 # -------------------
2719 # Handle libraries.
2720 sub handle_libraries
2721 {
2722 my @liblist = &am_install_var ('libs', 'LIBRARIES',
2723 'lib', 'pkglib', 'noinst', 'check');
2724 return if ! @liblist;
2726 my @prefix = am_primary_prefixes ('LIBRARIES', 0, 'lib', 'pkglib',
2727 'noinst', 'check');
2729 if (@prefix)
2730 {
2731 my $var = rvar ($prefix[0] . '_LIBRARIES');
2732 $var->requires_variables ('library used', 'RANLIB');
2733 }
2735 &define_variable ('AR', 'ar', INTERNAL);
2736 &define_variable ('ARFLAGS', 'cru', INTERNAL);
2737 &define_verbose_tagvar ('AR');
2739 foreach my $pair (@liblist)
2740 {
2741 my ($where, $onelib) = @$pair;
2743 my $seen_libobjs = 0;
2744 # Check that the library fits the standard naming convention.
2745 my $bn = basename ($onelib);
2746 if ($bn !~ /^lib.*\.a$/)
2747 {
2748 $bn =~ s/^(?:lib)?(.*?)(?:\.[^.]*)?$/lib$1.a/;
2749 my $suggestion = dirname ($onelib) . "/$bn";
2750 $suggestion =~ s|^\./||g;
2751 msg ('error-gnu/warn', $where,
2752 "`$onelib' is not a standard library name\n"
2753 . "did you mean `$suggestion'?")
2754 }
2756 ($known_libraries{$onelib} = $bn) =~ s/\.a$//;
2758 $where->push_context ("while processing library `$onelib'");
2759 $where->set (INTERNAL->get);
2761 my $obj = get_object_extension '.$(OBJEXT)';
2763 # Canonicalize names and check for misspellings.
2764 my $xlib = &check_canonical_spelling ($onelib, '_LIBADD', '_SOURCES',
2765 '_OBJECTS', '_DEPENDENCIES',
2766 '_AR');
2768 if (! var ($xlib . '_AR'))
2769 {
2770 &define_variable ($xlib . '_AR', '$(AR) $(ARFLAGS)', $where);
2771 }
2773 # Generate support for conditional object inclusion in
2774 # libraries.
2775 if (var ($xlib . '_LIBADD'))
2776 {
2777 if (&handle_lib_objects ($xlib, $xlib . '_LIBADD'))
2778 {
2779 $seen_libobjs = 1;
2780 }
2781 }
2782 else
2783 {
2784 &define_variable ($xlib . "_LIBADD", '', $where);
2785 }
2787 reject_var ($xlib . '_LDADD',
2788 "use `${xlib}_LIBADD', not `${xlib}_LDADD'");
2790 # Make sure we at look at this.
2791 set_seen ($xlib . '_DEPENDENCIES');
2793 &handle_source_transform ($xlib, $onelib, $obj, $where,
2794 NONLIBTOOL => 1, LIBTOOL => 0);
2796 # If the resulting library lies into a subdirectory,
2797 # make sure this directory will exist.
2798 my $dirstamp = require_build_directory_maybe ($onelib);
2799 my $verbose = verbose_flag ('AR');
2800 my $silent = silent_flag ();
2802 $output_rules .= &file_contents ('library',
2803 $where,
2804 VERBOSE => $verbose,
2805 SILENT => $silent,
2806 LIBRARY => $onelib,
2807 XLIBRARY => $xlib,
2808 DIRSTAMP => $dirstamp);
2810 if ($seen_libobjs)
2811 {
2812 if (var ($xlib . '_LIBADD'))
2813 {
2814 &check_libobjs_sources ($xlib, $xlib . '_LIBADD');
2815 }
2816 }
2817 }
2818 }
2821 # handle_ltlibraries ()
2822 # ---------------------
2823 # Handle shared libraries.
2824 sub handle_ltlibraries
2825 {
2826 my @liblist = &am_install_var ('ltlib', 'LTLIBRARIES',
2827 'noinst', 'lib', 'pkglib', 'check');
2828 return if ! @liblist;
2830 my @prefix = am_primary_prefixes ('LTLIBRARIES', 0, 'lib', 'pkglib',
2831 'noinst', 'check');
2833 if (@prefix)
2834 {
2835 my $var = rvar ($prefix[0] . '_LTLIBRARIES');
2836 $var->requires_variables ('Libtool library used', 'LIBTOOL');
2837 }
2839 my %instdirs = ();
2840 my %instsubdirs = ();
2841 my %instconds = ();
2842 my %liblocations = (); # Location (in Makefile.am) of each library.
2844 foreach my $key (@prefix)
2845 {
2846 # Get the installation directory of each library.
2847 my $dir = $key;
2848 my $strip_subdir = 1;
2849 if ($dir =~ /^nobase_/)
2850 {
2851 $dir =~ s/^nobase_//;
2852 $strip_subdir = 0;
2853 }
2854 my $var = rvar ($key . '_LTLIBRARIES');
2856 # We reject libraries which are installed in several places
2857 # in the same condition, because we can only specify one
2858 # `-rpath' option.
2859 $var->traverse_recursively
2860 (sub
2861 {
2862 my ($var, $val, $cond, $full_cond) = @_;
2863 my $hcond = $full_cond->human;
2864 my $where = $var->rdef ($cond)->location;
2865 my $ldir = '';
2866 $ldir = '/' . dirname ($val)
2867 if (!$strip_subdir);
2868 # A library cannot be installed in different directories
2869 # in overlapping conditions.
2870 if (exists $instconds{$val})
2871 {
2872 my ($msg, $acond) =
2873 $instconds{$val}->ambiguous_p ($val, $full_cond);
2875 if ($msg)
2876 {
2877 error ($where, $msg, partial => 1);
2878 my $dirtxt = "installed " . ($strip_subdir ? "in" : "below") . " `$dir'";
2879 $dirtxt = "built for `$dir'"
2880 if $dir eq 'EXTRA' || $dir eq 'noinst' || $dir eq 'check';
2881 my $dircond =
2882 $full_cond->true ? "" : " in condition $hcond";
2884 error ($where, "`$val' should be $dirtxt$dircond ...",
2885 partial => 1);
2887 my $hacond = $acond->human;
2888 my $adir = $instdirs{$val}{$acond};
2889 my $adirtxt = "installed in `$adir'";
2890 $adirtxt = "built for `$adir'"
2891 if ($adir eq 'EXTRA' || $adir eq 'noinst'
2892 || $adir eq 'check');
2893 my $adircond = $acond->true ? "" : " in condition $hacond";
2895 my $onlyone = ($dir ne $adir) ?
2896 ("\nLibtool libraries can be built for only one "
2897 . "destination.") : "";
2899 error ($liblocations{$val}{$acond},
2900 "... and should also be $adirtxt$adircond.$onlyone");
2901 return;
2902 }
2903 }
2904 else
2905 {
2906 $instconds{$val} = new Automake::DisjConditions;
2907 }
2908 $instdirs{$val}{$full_cond} = $dir;
2909 $instsubdirs{$val}{$full_cond} = $ldir;
2910 $liblocations{$val}{$full_cond} = $where;
2911 $instconds{$val} = $instconds{$val}->merge ($full_cond);
2912 },
2913 sub
2914 {
2915 return ();
2916 },
2917 skip_ac_subst => 1);
2918 }
2920 foreach my $pair (@liblist)
2921 {
2922 my ($where, $onelib) = @$pair;
2924 my $seen_libobjs = 0;
2925 my $obj = get_object_extension '.lo';
2927 # Canonicalize names and check for misspellings.
2928 my $xlib = &check_canonical_spelling ($onelib, '_LIBADD', '_LDFLAGS',
2929 '_SOURCES', '_OBJECTS',
2930 '_DEPENDENCIES');
2932 # Check that the library fits the standard naming convention.
2933 my $libname_rx = '^lib.*\.la';
2934 my $ldvar = var ("${xlib}_LDFLAGS") || var ('AM_LDFLAGS');
2935 my $ldvar2 = var ('LDFLAGS');
2936 if (($ldvar && grep (/-module/, $ldvar->value_as_list_recursive))
2937 || ($ldvar2 && grep (/-module/, $ldvar2->value_as_list_recursive)))
2938 {
2939 # Relax name checking for libtool modules.
2940 $libname_rx = '\.la';
2941 }
2943 my $bn = basename ($onelib);
2944 if ($bn !~ /$libname_rx$/)
2945 {
2946 my $type = 'library';
2947 if ($libname_rx eq '\.la')
2948 {
2949 $bn =~ s/^(lib|)(.*?)(?:\.[^.]*)?$/$1$2.la/;
2950 $type = 'module';
2951 }
2952 else
2953 {
2954 $bn =~ s/^(?:lib)?(.*?)(?:\.[^.]*)?$/lib$1.la/;
2955 }
2956 my $suggestion = dirname ($onelib) . "/$bn";
2957 $suggestion =~ s|^\./||g;
2958 msg ('error-gnu/warn', $where,
2959 "`$onelib' is not a standard libtool $type name\n"
2960 . "did you mean `$suggestion'?")
2961 }
2963 ($known_libraries{$onelib} = $bn) =~ s/\.la$//;
2965 $where->push_context ("while processing Libtool library `$onelib'");
2966 $where->set (INTERNAL->get);
2968 # Make sure we look at these.
2969 set_seen ($xlib . '_LDFLAGS');
2970 set_seen ($xlib . '_DEPENDENCIES');
2972 # Generate support for conditional object inclusion in
2973 # libraries.
2974 if (var ($xlib . '_LIBADD'))
2975 {
2976 if (&handle_lib_objects ($xlib, $xlib . '_LIBADD'))
2977 {
2978 $seen_libobjs = 1;
2979 }
2980 }
2981 else
2982 {
2983 &define_variable ($xlib . "_LIBADD", '', $where);
2984 }
2986 reject_var ("${xlib}_LDADD",
2987 "use `${xlib}_LIBADD', not `${xlib}_LDADD'");
2990 my $linker = &handle_source_transform ($xlib, $onelib, $obj, $where,
2991 NONLIBTOOL => 0, LIBTOOL => 1);
2993 # Determine program to use for link.
2994 my($xlink, $vlink) = &define_per_target_linker_variable ($linker, $xlib);
2995 $vlink = verbose_flag ($vlink || 'GEN');
2997 my $rpathvar = "am_${xlib}_rpath";
2998 my $rpath = "\$($rpathvar)";
2999 foreach my $rcond ($instconds{$onelib}->conds)
3000 {
3001 my $val;
3002 if ($instdirs{$onelib}{$rcond} eq 'EXTRA'
3003 || $instdirs{$onelib}{$rcond} eq 'noinst'
3004 || $instdirs{$onelib}{$rcond} eq 'check')
3005 {
3006 # It's an EXTRA_ library, so we can't specify -rpath,
3007 # because we don't know where the library will end up.
3008 # The user probably knows, but generally speaking automake
3009 # doesn't -- and in fact configure could decide
3010 # dynamically between two different locations.
3011 $val = '';
3012 }
3013 else
3014 {
3015 $val = ('-rpath $(' . $instdirs{$onelib}{$rcond} . 'dir)');
3016 $val .= $instsubdirs{$onelib}{$rcond}
3017 if defined $instsubdirs{$onelib}{$rcond};
3018 }
3019 if ($rcond->true)
3020 {
3021 # If $rcond is true there is only one condition and
3022 # there is no point defining an helper variable.
3023 $rpath = $val;
3024 }
3025 else
3026 {
3027 define_pretty_variable ($rpathvar, $rcond, INTERNAL, $val);
3028 }
3029 }
3031 # If the resulting library lies into a subdirectory,
3032 # make sure this directory will exist.
3033 my $dirstamp = require_build_directory_maybe ($onelib);
3035 # Remember to cleanup .libs/ in this directory.
3036 my $dirname = dirname $onelib;
3037 $libtool_clean_directories{$dirname} = 1;
3039 $output_rules .= &file_contents ('ltlibrary',
3040 $where,
3041 LTLIBRARY => $onelib,
3042 XLTLIBRARY => $xlib,
3043 RPATH => $rpath,
3044 XLINK => $xlink,
3045 VERBOSE => $vlink,
3046 DIRSTAMP => $dirstamp);
3047 if ($seen_libobjs)
3048 {
3049 if (var ($xlib . '_LIBADD'))
3050 {
3051 &check_libobjs_sources ($xlib, $xlib . '_LIBADD');
3052 }
3053 }
3054 }
3055 }
3057 # See if any _SOURCES variable were misspelled.
3058 sub check_typos ()
3059 {
3060 # It is ok if the user sets this particular variable.
3061 set_seen 'AM_LDFLAGS';
3063 foreach my $primary ('SOURCES', 'LIBADD', 'LDADD', 'LDFLAGS', 'DEPENDENCIES')
3064 {
3065 foreach my $var (variables $primary)
3066 {
3067 my $varname = $var->name;
3068 # A configure variable is always legitimate.
3069 next if exists $configure_vars{$varname};
3071 for my $cond ($var->conditions->conds)
3072 {
3073 $varname =~ /^(?:nobase_)?(?:dist_|nodist_)?(.*)_[[:alnum:]]+$/;
3074 msg_var ('syntax', $var, "variable `$varname' is defined but no"
3075 . " program or\nlibrary has `$1' as canonical name"
3076 . " (possible typo)")
3077 unless $var->rdef ($cond)->seen;
3078 }
3079 }
3080 }
3081 }
3084 # Handle scripts.
3085 sub handle_scripts
3086 {
3087 # NOTE we no longer automatically clean SCRIPTS, because it is
3088 # useful to sometimes distribute scripts verbatim. This happens
3089 # e.g. in Automake itself.
3090 &am_install_var ('-candist', 'scripts', 'SCRIPTS',
3091 'bin', 'sbin', 'libexec', 'pkgdata',
3092 'noinst', 'check');
3093 }
3098 ## ------------------------ ##
3099 ## Handling Texinfo files. ##
3100 ## ------------------------ ##
3102 # ($OUTFILE, $VFILE, @CLEAN_FILES)
3103 # &scan_texinfo_file ($FILENAME)
3104 # ------------------------------
3105 # $OUTFILE - name of the info file produced by $FILENAME.
3106 # $VFILE - name of the version.texi file used (undef if none).
3107 # @CLEAN_FILES - list of byproducts (indexes etc.)
3108 sub scan_texinfo_file ($)
3109 {
3110 my ($filename) = @_;
3112 # Some of the following extensions are always created, no matter
3113 # whether indexes are used or not. Other (like cps, fns, ... pgs)
3114 # are only created when they are used. We used to scan $FILENAME
3115 # for their use, but that is not enough: they could be used in
3116 # included files. We can't scan included files because we don't
3117 # know the include path. Therefore we always erase these files, no
3118 # matter whether they are used or not.
3119 #
3120 # (tmp is only created if an @macro is used and a certain e-TeX
3121 # feature is not available.)
3122 my %clean_suffixes =
3123 map { $_ => 1 } (qw(aux log toc tmp
3124 cp cps
3125 fn fns
3126 ky kys
3127 vr vrs
3128 tp tps
3129 pg pgs)); # grep 'new.*index' texinfo.tex
3131 my $texi = new Automake::XFile "< $filename";
3132 verb "reading $filename";
3134 my ($outfile, $vfile);
3135 while ($_ = $texi->getline)
3136 {
3137 if (/^\@setfilename +(\S+)/)
3138 {
3139 # Honor only the first @setfilename. (It's possible to have
3140 # more occurrences later if the manual shows examples of how
3141 # to use @setfilename...)
3142 next if $outfile;
3144 $outfile = $1;
3145 if ($outfile =~ /\.([^.]+)$/ && $1 ne 'info')
3146 {
3147 error ("$filename:$.",
3148 "output `$outfile' has unrecognized extension");
3149 return;
3150 }
3151 }
3152 # A "version.texi" file is actually any file whose name matches
3153 # "vers*.texi".
3154 elsif (/^\@include\s+(vers[^.]*\.texi)\s*$/)
3155 {
3156 $vfile = $1;
3157 }
3159 # Try to find new or unused indexes.
3161 # Creating a new category of index.
3162 elsif (/^\@def(code)?index (\w+)/)
3163 {
3164 $clean_suffixes{$2} = 1;
3165 $clean_suffixes{"$2s"} = 1;
3166 }
3168 # Merging an index into an another.
3169 elsif (/^\@syn(code)?index (\w+) (\w+)/)
3170 {
3171 delete $clean_suffixes{"$2s"};
3172 $clean_suffixes{"$3s"} = 1;
3173 }
3175 }
3177 if (! $outfile)
3178 {
3179 err_am "`$filename' missing \@setfilename";
3180 return;
3181 }
3183 my $infobase = basename ($filename);
3184 $infobase =~ s/\.te?xi(nfo)?$//;
3185 return ($outfile, $vfile,
3186 map { "$infobase.$_" } (sort keys %clean_suffixes));
3187 }
3190 # ($DIRSTAMP, @CLEAN_FILES)
3191 # output_texinfo_build_rules ($SOURCE, $DEST, $INSRC, @DEPENDENCIES)
3192 # ------------------------------------------------------------------
3193 # SOURCE - the source Texinfo file
3194 # DEST - the destination Info file
3195 # INSRC - whether DEST should be built in the source tree
3196 # DEPENDENCIES - known dependencies
3197 sub output_texinfo_build_rules ($$$@)
3198 {
3199 my ($source, $dest, $insrc, @deps) = @_;
3201 # Split `a.texi' into `a' and `.texi'.
3202 my ($spfx, $ssfx) = ($source =~ /^(.*?)(\.[^.]*)?$/);
3203 my ($dpfx, $dsfx) = ($dest =~ /^(.*?)(\.[^.]*)?$/);
3205 $ssfx ||= "";
3206 $dsfx ||= "";
3208 # We can output two kinds of rules: the "generic" rules use Make
3209 # suffix rules and are appropriate when $source and $dest do not lie
3210 # in a sub-directory; the "specific" rules are needed in the other
3211 # case.
3212 #
3213 # The former are output only once (this is not really apparent here,
3214 # but just remember that some logic deeper in Automake will not
3215 # output the same rule twice); while the later need to be output for
3216 # each Texinfo source.
3217 my $generic;
3218 my $makeinfoflags;
3219 my $sdir = dirname $source;
3220 if ($sdir eq '.' && dirname ($dest) eq '.')
3221 {
3222 $generic = 1;
3223 $makeinfoflags = '-I $(srcdir)';
3224 }
3225 else
3226 {
3227 $generic = 0;
3228 $makeinfoflags = "-I $sdir -I \$(srcdir)/$sdir";
3229 }
3231 # A directory can contain two kinds of info files: some built in the
3232 # source tree, and some built in the build tree. The rules are
3233 # different in each case. However we cannot output two different
3234 # set of generic rules. Because in-source builds are more usual, we
3235 # use generic rules in this case and fall back to "specific" rules
3236 # for build-dir builds. (It should not be a problem to invert this
3237 # if needed.)
3238 $generic = 0 unless $insrc;
3240 # We cannot use a suffix rule to build info files with an empty
3241 # extension. Otherwise we would output a single suffix inference
3242 # rule, with separate dependencies, as in
3243 #
3244 # .texi:
3245 # $(MAKEINFO) ...
3246 # foo.info: foo.texi
3247 #
3248 # which confuse Solaris make. (See the Autoconf manual for
3249 # details.) Therefore we use a specific rule in this case. This
3250 # applies to info files only (dvi and pdf files always have an
3251 # extension).
3252 my $generic_info = ($generic && $dsfx) ? 1 : 0;
3254 # If the resulting file lie into a subdirectory,
3255 # make sure this directory will exist.
3256 my $dirstamp = require_build_directory_maybe ($dest);
3258 my $dipfx = ($insrc ? '$(srcdir)/' : '') . $dpfx;
3260 $output_rules .= file_contents ('texibuild',
3261 new Automake::Location,
3262 DEPS => "@deps",
3263 DEST_PREFIX => $dpfx,
3264 DEST_INFO_PREFIX => $dipfx,
3265 DEST_SUFFIX => $dsfx,
3266 DIRSTAMP => $dirstamp,
3267 GENERIC => $generic,
3268 GENERIC_INFO => $generic_info,
3269 INSRC => $insrc,
3270 MAKEINFOFLAGS => $makeinfoflags,
3271 SOURCE => ($generic
3272 ? '$<' : $source),
3273 SOURCE_INFO => ($generic_info
3274 ? '$<' : $source),
3275 SOURCE_REAL => $source,
3276 SOURCE_SUFFIX => $ssfx,
3277 );
3278 return ($dirstamp, "$dpfx.dvi", "$dpfx.pdf", "$dpfx.ps", "$dpfx.html");
3279 }
3282 # ($MOSTLYCLEAN, $TEXICLEAN, $MAINTCLEAN)
3283 # handle_texinfo_helper ($info_texinfos)
3284 # --------------------------------------
3285 # Handle all Texinfo source; helper for handle_texinfo.
3286 sub handle_texinfo_helper ($)
3287 {
3288 my ($info_texinfos) = @_;
3289 my (@infobase, @info_deps_list, @texi_deps);
3290 my %versions;
3291 my $done = 0;
3292 my (@mostly_cleans, @texi_cleans, @maint_cleans) = ('', '', '');
3294 # Build a regex matching user-cleaned files.
3295 my $d = var 'DISTCLEANFILES';
3296 my $c = var 'CLEANFILES';
3297 my @f = ();
3298 push @f, $d->value_as_list_recursive (inner_expand => 1) if $d;
3299 push @f, $c->value_as_list_recursive (inner_expand => 1) if $c;
3300 @f = map { s|[^A-Za-z_0-9*\[\]\-]|\\$&|g; s|\*|[^/]*|g; $_; } @f;
3301 my $user_cleaned_files = '^(?:' . join ('|', @f) . ')$';
3303 foreach my $texi
3304 ($info_texinfos->value_as_list_recursive (inner_expand => 1))
3305 {
3306 my $infobase = $texi;
3307 $infobase =~ s/\.(txi|texinfo|texi)$//;
3309 if ($infobase eq $texi)
3310 {
3311 # FIXME: report line number.
3312 err_am "texinfo file `$texi' has unrecognized extension";
3313 next;
3314 }
3316 push @infobase, $infobase;
3318 # If 'version.texi' is referenced by input file, then include
3319 # automatic versioning capability.
3320 my ($out_file, $vtexi, @clean_files) =
3321 scan_texinfo_file ("$relative_dir/$texi")
3322 or next;
3323 push (@mostly_cleans, @clean_files);
3325 # If the Texinfo source is in a subdirectory, create the
3326 # resulting info in this subdirectory. If it is in the current
3327 # directory, try hard to not prefix "./" because it breaks the
3328 # generic rules.
3329 my $outdir = dirname ($texi) . '/';
3330 $outdir = "" if $outdir eq './';
3331 $out_file = $outdir . $out_file;
3333 # Until Automake 1.6.3, .info files were built in the
3334 # source tree. This was an obstacle to the support of
3335 # non-distributed .info files, and non-distributed .texi
3336 # files.
3337 #
3338 # * Non-distributed .texi files is important in some packages
3339 # where .texi files are built at make time, probably using
3340 # other binaries built in the package itself, maybe using
3341 # tools or information found on the build host. Because
3342 # these files are not distributed they are always rebuilt
3343 # at make time; they should therefore not lie in the source
3344 # directory. One plan was to support this using
3345 # nodist_info_TEXINFOS or something similar. (Doing this
3346 # requires some sanity checks. For instance Automake should
3347 # not allow:
3348 # dist_info_TEXINFOS = foo.texi
3349 # nodist_foo_TEXINFOS = included.texi
3350 # because a distributed file should never depend on a
3351 # non-distributed file.)
3352 #
3353 # * If .texi files are not distributed, then .info files should
3354 # not be distributed either. There are also cases where one
3355 # wants to distribute .texi files, but does not want to
3356 # distribute the .info files. For instance the Texinfo package
3357 # distributes the tool used to build these files; it would
3358 # be a waste of space to distribute them. It's not clear
3359 # which syntax we should use to indicate that .info files should
3360 # not be distributed. Akim Demaille suggested that eventually
3361 # we switch to a new syntax:
3362 # | Maybe we should take some inspiration from what's already
3363 # | done in the rest of Automake. Maybe there is too much
3364 # | syntactic sugar here, and you want
3365 # | nodist_INFO = bar.info
3366 # | dist_bar_info_SOURCES = bar.texi
3367 # | bar_texi_DEPENDENCIES = foo.texi
3368 # | with a bit of magic to have bar.info represent the whole
3369 # | bar*info set. That's a lot more verbose that the current
3370 # | situation, but it is # not new, hence the user has less
3371 # | to learn.
3372 # |
3373 # | But there is still too much room for meaningless specs:
3374 # | nodist_INFO = bar.info
3375 # | dist_bar_info_SOURCES = bar.texi
3376 # | dist_PS = bar.ps something-written-by-hand.ps
3377 # | nodist_bar_ps_SOURCES = bar.texi
3378 # | bar_texi_DEPENDENCIES = foo.texi
3379 # | here bar.texi is dist_ in line 2, and nodist_ in 4.
3380 #
3381 # Back to the point, it should be clear that in order to support
3382 # non-distributed .info files, we need to build them in the
3383 # build tree, not in the source tree (non-distributed .texi
3384 # files are less of a problem, because we do not output build
3385 # rules for them). In Automake 1.7 .info build rules have been
3386 # largely cleaned up so that .info files get always build in the
3387 # build tree, even when distributed. The idea was that
3388 # (1) if during a VPATH build the .info file was found to be
3389 # absent or out-of-date (in the source tree or in the
3390 # build tree), Make would rebuild it in the build tree.
3391 # If an up-to-date source-tree of the .info file existed,
3392 # make would not rebuild it in the build tree.
3393 # (2) having two copies of .info files, one in the source tree
3394 # and one (newer) in the build tree is not a problem
3395 # because `make dist' always pick files in the build tree
3396 # first.
3397 # However it turned out the be a bad idea for several reasons:
3398 # * Tru64, OpenBSD, and FreeBSD (not NetBSD) Make do not behave
3399 # like GNU Make on point (1) above. These implementations
3400 # of Make would always rebuild .info files in the build
3401 # tree, even if such files were up to date in the source
3402 # tree. Consequently, it was impossible to perform a VPATH
3403 # build of a package containing Texinfo files using these
3404 # Make implementations.
3405 # (Refer to the Autoconf Manual, section "Limitation of
3406 # Make", paragraph "VPATH", item "target lookup", for
3407 # an account of the differences between these
3408 # implementations.)
3409 # * The GNU Coding Standards require these files to be built
3410 # in the source-tree (when they are distributed, that is).
3411 # * Keeping a fresher copy of distributed files in the
3412 # build tree can be annoying during development because
3413 # - if the files is kept under CVS, you really want it
3414 # to be updated in the source tree
3415 # - it is confusing that `make distclean' does not erase
3416 # all files in the build tree.
3417 #
3418 # Consequently, starting with Automake 1.8, .info files are
3419 # built in the source tree again. Because we still plan to
3420 # support non-distributed .info files at some point, we
3421 # have a single variable ($INSRC) that controls whether
3422 # the current .info file must be built in the source tree
3423 # or in the build tree. Actually this variable is switched
3424 # off for .info files that appear to be cleaned; this is
3425 # for backward compatibility with package such as Texinfo,
3426 # which do things like
3427 # info_TEXINFOS = texinfo.txi info-stnd.texi info.texi
3428 # DISTCLEANFILES = texinfo texinfo-* info*.info*
3429 # # Do not create info files for distribution.
3430 # dist-info:
3431 # in order not to distribute .info files.
3432 my $insrc = ($out_file =~ $user_cleaned_files) ? 0 : 1;
3434 my $soutdir = '$(srcdir)/' . $outdir;
3435 $outdir = $soutdir if $insrc;
3437 # If user specified file_TEXINFOS, then use that as explicit
3438 # dependency list.
3439 @texi_deps = ();
3440 push (@texi_deps, "$soutdir$vtexi") if $vtexi;
3442 my $canonical = canonicalize ($infobase);
3443 if (var ($canonical . "_TEXINFOS"))
3444 {
3445 push (@texi_deps, '$(' . $canonical . '_TEXINFOS)');
3446 push_dist_common ('$(' . $canonical . '_TEXINFOS)');
3447 }
3449 my ($dirstamp, @cfiles) =
3450 output_texinfo_build_rules ($texi, $out_file, $insrc, @texi_deps);
3451 push (@texi_cleans, @cfiles);
3453 push (@info_deps_list, $out_file);
3455 # If a vers*.texi file is needed, emit the rule.
3456 if ($vtexi)
3457 {
3458 err_am ("`$vtexi', included in `$texi', "
3459 . "also included in `$versions{$vtexi}'")
3460 if defined $versions{$vtexi};
3461 $versions{$vtexi} = $texi;
3463 # We number the stamp-vti files. This is doable since the
3464 # actual names don't matter much. We only number starting
3465 # with the second one, so that the common case looks nice.
3466 my $vti = ($done ? $done : 'vti');
3467 ++$done;
3469 # This is ugly, but it is our historical practice.
3470 if ($config_aux_dir_set_in_configure_ac)
3471 {
3472 require_conf_file_with_macro (TRUE, 'info_TEXINFOS', FOREIGN,
3473 'mdate-sh');
3474 }
3475 else
3476 {
3477 require_file_with_macro (TRUE, 'info_TEXINFOS',
3478 FOREIGN, 'mdate-sh');
3479 }
3481 my $conf_dir;
3482 if ($config_aux_dir_set_in_configure_ac)
3483 {
3484 $conf_dir = "$am_config_aux_dir/";
3485 }
3486 else
3487 {
3488 $conf_dir = '$(srcdir)/';
3489 }
3490 $output_rules .= file_contents ('texi-vers',
3491 new Automake::Location,
3492 TEXI => $texi,
3493 VTI => $vti,
3494 STAMPVTI => "${soutdir}stamp-$vti",
3495 VTEXI => "$soutdir$vtexi",
3496 MDDIR => $conf_dir,
3497 DIRSTAMP => $dirstamp);
3498 }
3499 }
3501 # Handle location of texinfo.tex.
3502 my $need_texi_file = 0;
3503 my $texinfodir;
3504 if (var ('TEXINFO_TEX'))
3505 {
3506 # The user defined TEXINFO_TEX so assume he knows what he is
3507 # doing.
3508 $texinfodir = ('$(srcdir)/'
3509 . dirname (variable_value ('TEXINFO_TEX')));
3510 }
3511 elsif (option 'cygnus')
3512 {
3513 $texinfodir = '$(top_srcdir)/../texinfo';
3514 define_variable ('TEXINFO_TEX', "$texinfodir/texinfo.tex", INTERNAL);
3515 }
3516 elsif ($config_aux_dir_set_in_configure_ac)
3517 {
3518 $texinfodir = $am_config_aux_dir;
3519 define_variable ('TEXINFO_TEX', "$texinfodir/texinfo.tex", INTERNAL);
3520 $need_texi_file = 2; # so that we require_conf_file later
3521 }
3522 else
3523 {
3524 $texinfodir = '$(srcdir)';
3525 $need_texi_file = 1;
3526 }
3527 define_variable ('am__TEXINFO_TEX_DIR', $texinfodir, INTERNAL);
3529 push (@dist_targets, 'dist-info');
3531 if (! option 'no-installinfo')
3532 {
3533 # Make sure documentation is made and installed first. Use
3534 # $(INFO_DEPS), not 'info', because otherwise recursive makes
3535 # get run twice during "make all".
3536 unshift (@all, '$(INFO_DEPS)');
3537 }
3539 define_files_variable ("DVIS", @infobase, 'dvi', INTERNAL);
3540 define_files_variable ("PDFS", @infobase, 'pdf', INTERNAL);
3541 define_files_variable ("PSS", @infobase, 'ps', INTERNAL);
3542 define_files_variable ("HTMLS", @infobase, 'html', INTERNAL);
3544 # This next isn't strictly needed now -- the places that look here
3545 # could easily be changed to look in info_TEXINFOS. But this is
3546 # probably better, in case noinst_TEXINFOS is ever supported.
3547 define_variable ("TEXINFOS", variable_value ('info_TEXINFOS'), INTERNAL);
3549 # Do some error checking. Note that this file is not required
3550 # when in Cygnus mode; instead we defined TEXINFO_TEX explicitly
3551 # up above.
3552 if ($need_texi_file && ! option 'no-texinfo.tex')
3553 {
3554 if ($need_texi_file > 1)
3555 {
3556 require_conf_file_with_macro (TRUE, 'info_TEXINFOS', FOREIGN,
3557 'texinfo.tex');
3558 }
3559 else
3560 {
3561 require_file_with_macro (TRUE, 'info_TEXINFOS', FOREIGN,
3562 'texinfo.tex');
3563 }
3564 }
3566 return (makefile_wrap ("", "\t ", @mostly_cleans),
3567 makefile_wrap ("", "\t ", @texi_cleans),
3568 makefile_wrap ("", "\t ", @maint_cleans));
3569 }
3572 # handle_texinfo ()
3573 # -----------------
3574 # Handle all Texinfo source.
3575 sub handle_texinfo ()
3576 {
3577 reject_var 'TEXINFOS', "`TEXINFOS' is an anachronism; use `info_TEXINFOS'";
3578 # FIXME: I think this is an obsolete future feature name.
3579 reject_var 'html_TEXINFOS', "HTML generation not yet supported";
3581 my $info_texinfos = var ('info_TEXINFOS');
3582 my ($mostlyclean, $clean, $maintclean) = ('', '', '');
3583 if ($info_texinfos)
3584 {
3585 ($mostlyclean, $clean, $maintclean) = handle_texinfo_helper ($info_texinfos);
3586 chomp $mostlyclean;
3587 chomp $clean;
3588 chomp $maintclean;
3589 }
3591 $output_rules .= file_contents ('texinfos',
3592 new Automake::Location,
3593 MOSTLYCLEAN => $mostlyclean,
3594 TEXICLEAN => $clean,
3595 MAINTCLEAN => $maintclean,
3596 'LOCAL-TEXIS' => !!$info_texinfos);
3597 }
3600 # Handle any man pages.
3601 sub handle_man_pages
3602 {
3603 reject_var 'MANS', "`MANS' is an anachronism; use `man_MANS'";
3605 # Find all the sections in use. We do this by first looking for
3606 # "standard" sections, and then looking for any additional
3607 # sections used in man_MANS.
3608 my (%sections, %notrans_sections, %trans_sections,
3609 %notrans_vars, %trans_vars, %notrans_sect_vars, %trans_sect_vars);
3610 # We handle nodist_ for uniformity. man pages aren't distributed
3611 # by default so it isn't actually very important.
3612 foreach my $npfx ('', 'notrans_')
3613 {
3614 foreach my $pfx ('', 'dist_', 'nodist_')
3615 {
3616 # Add more sections as needed.
3617 foreach my $section ('0'..'9', 'n', 'l')
3618 {
3619 my $varname = $npfx . $pfx . 'man' . $section . '_MANS';
3620 if (var ($varname))
3621 {
3622 $sections{$section} = 1;
3623 $varname = '$(' . $varname . ')';
3624 if ($npfx eq 'notrans_')
3625 {
3626 $notrans_sections{$section} = 1;
3627 $notrans_sect_vars{$varname} = 1;
3628 }
3629 else
3630 {
3631 $trans_sections{$section} = 1;
3632 $trans_sect_vars{$varname} = 1;
3633 }
3635 &push_dist_common ($varname)
3636 if $pfx eq 'dist_';
3637 }
3638 }
3640 my $varname = $npfx . $pfx . 'man_MANS';
3641 my $var = var ($varname);
3642 if ($var)
3643 {
3644 foreach ($var->value_as_list_recursive)
3645 {
3646 # A page like `foo.1c' goes into man1dir.
3647 if (/\.([0-9a-z])([a-z]*)$/)
3648 {
3649 $sections{$1} = 1;
3650 if ($npfx eq 'notrans_')
3651 {
3652 $notrans_sections{$1} = 1;
3653 }
3654 else
3655 {
3656 $trans_sections{$1} = 1;
3657 }
3658 }
3659 }
3661 $varname = '$(' . $varname . ')';
3662 if ($npfx eq 'notrans_')
3663 {
3664 $notrans_vars{$varname} = 1;
3665 }
3666 else
3667 {
3668 $trans_vars{$varname} = 1;
3669 }
3670 &push_dist_common ($varname)
3671 if $pfx eq 'dist_';
3672 }
3673 }
3674 }
3676 return unless %sections;
3678 my @unsorted_deps;
3680 # Build section independent variables.
3681 my $have_notrans = %notrans_vars;
3682 my @notrans_list = sort keys %notrans_vars;
3683 my $have_trans = %trans_vars;
3684 my @trans_list = sort keys %trans_vars;
3686 # Now for each section, generate an install and uninstall rule.
3687 # Sort sections so output is deterministic.
3688 foreach my $section (sort keys %sections)
3689 {
3690 # Build section dependent variables.
3691 my $notrans_mans = $have_notrans || exists $notrans_sections{$section};
3692 my $trans_mans = $have_trans || exists $trans_sections{$section};
3693 my (%notrans_this_sect, %trans_this_sect);
3694 my $expr = 'man' . $section . '_MANS';
3695 foreach my $varname (keys %notrans_sect_vars)
3696 {
3697 if ($varname =~ /$expr/)
3698 {
3699 $notrans_this_sect{$varname} = 1;
3700 }
3701 }
3702 foreach my $varname (keys %trans_sect_vars)
3703 {
3704 if ($varname =~ /$expr/)
3705 {
3706 $trans_this_sect{$varname} = 1;
3707 }
3708 }
3709 my @notrans_sect_list = sort keys %notrans_this_sect;
3710 my @trans_sect_list = sort keys %trans_this_sect;
3711 @unsorted_deps = (keys %notrans_vars, keys %trans_vars,
3712 keys %notrans_this_sect, keys %trans_this_sect);
3713 my @deps = sort @unsorted_deps;
3714 $output_rules .= &file_contents ('mans',
3715 new Automake::Location,
3716 SECTION => $section,
3717 DEPS => "@deps",
3718 NOTRANS_MANS => $notrans_mans,
3719 NOTRANS_SECT_LIST => "@notrans_sect_list",
3720 HAVE_NOTRANS => $have_notrans,
3721 NOTRANS_LIST => "@notrans_list",
3722 TRANS_MANS => $trans_mans,
3723 TRANS_SECT_LIST => "@trans_sect_list",
3724 HAVE_TRANS => $have_trans,
3725 TRANS_LIST => "@trans_list");
3726 }
3728 @unsorted_deps = (keys %notrans_vars, keys %trans_vars,
3729 keys %notrans_sect_vars, keys %trans_sect_vars);
3730 my @mans = sort @unsorted_deps;
3731 $output_vars .= file_contents ('mans-vars',
3732 new Automake::Location,
3733 MANS => "@mans");
3735 push (@all, '$(MANS)')
3736 unless option 'no-installman';
3737 }
3739 # Handle DATA variables.
3740 sub handle_data
3741 {
3742 &am_install_var ('-noextra', '-candist', 'data', 'DATA',
3743 'data', 'dataroot', 'doc', 'dvi', 'html', 'pdf',
3744 'ps', 'sysconf', 'sharedstate', 'localstate',
3745 'pkgdata', 'lisp', 'noinst', 'check');
3746 }
3748 # Handle TAGS.
3749 sub handle_tags
3750 {
3751 my @tag_deps = ();
3752 my @ctag_deps = ();
3753 if (var ('SUBDIRS'))
3754 {
3755 $output_rules .= ("tags-recursive:\n"
3756 . "\tlist=\'\$(SUBDIRS)\'; for subdir in \$\$list; do \\\n"
3757 # Never fail here if a subdir fails; it
3758 # isn't important.
3759 . "\t test \"\$\$subdir\" = . || (\$(am__cd) \$\$subdir"
3760 . " && \$(MAKE) \$(AM_MAKEFLAGS) tags); \\\n"
3761 . "\tdone\n");
3762 push (@tag_deps, 'tags-recursive');
3763 &depend ('.PHONY', 'tags-recursive');
3764 &depend ('.MAKE', 'tags-recursive');
3766 $output_rules .= ("ctags-recursive:\n"
3767 . "\tlist=\'\$(SUBDIRS)\'; for subdir in \$\$list; do \\\n"
3768 # Never fail here if a subdir fails; it
3769 # isn't important.
3770 . "\t test \"\$\$subdir\" = . || (\$(am__cd) \$\$subdir"
3771 . " && \$(MAKE) \$(AM_MAKEFLAGS) ctags); \\\n"
3772 . "\tdone\n");
3773 push (@ctag_deps, 'ctags-recursive');
3774 &depend ('.PHONY', 'ctags-recursive');
3775 &depend ('.MAKE', 'ctags-recursive');
3776 }
3778 if (&saw_sources_p (1)
3779 || var ('ETAGS_ARGS')
3780 || @tag_deps)
3781 {
3782 my @config;
3783 foreach my $spec (@config_headers)
3784 {
3785 my ($out, @ins) = split_config_file_spec ($spec);
3786 foreach my $in (@ins)
3787 {
3788 # If the config header source is in this directory,
3789 # require it.
3790 push @config, basename ($in)
3791 if $relative_dir eq dirname ($in);
3792 }
3793 }
3794 $output_rules .= &file_contents ('tags',
3795 new Automake::Location,
3796 CONFIG => "@config",
3797 TAGSDIRS => "@tag_deps",
3798 CTAGSDIRS => "@ctag_deps");
3800 set_seen 'TAGS_DEPENDENCIES';
3801 }
3802 elsif (reject_var ('TAGS_DEPENDENCIES',
3803 "doesn't make sense to define `TAGS_DEPENDENCIES'"
3804 . "without\nsources or `ETAGS_ARGS'"))
3805 {
3806 }
3807 else
3808 {
3809 # Every Makefile must define some sort of TAGS rule.
3810 # Otherwise, it would be possible for a top-level "make TAGS"
3811 # to fail because some subdirectory failed.
3812 $output_rules .= "tags: TAGS\nTAGS:\n\n";
3813 # Ditto ctags.
3814 $output_rules .= "ctags: CTAGS\nCTAGS:\n\n";
3815 }
3816 }
3818 # Handle multilib support.
3819 sub handle_multilib
3820 {
3821 if ($seen_multilib && $relative_dir eq '.')
3822 {
3823 $output_rules .= &file_contents ('multilib', new Automake::Location);
3824 push (@all, 'all-multi');
3825 }
3826 }
3829 # user_phony_rule ($NAME)
3830 # -----------------------
3831 # Return false if rule $NAME does not exist. Otherwise,
3832 # declare it as phony, complete its definition (in case it is
3833 # conditional), and return its Automake::Rule instance.
3834 sub user_phony_rule ($)
3835 {
3836 my ($name) = @_;
3837 my $rule = rule $name;
3838 if ($rule)
3839 {
3840 depend ('.PHONY', $name);
3841 # Define $NAME in all condition where it is not already defined,
3842 # so that it is always OK to depend on $NAME.
3843 for my $c ($rule->not_always_defined_in_cond (TRUE)->conds)
3844 {
3845 Automake::Rule::define ($name, 'internal', RULE_AUTOMAKE,
3846 $c, INTERNAL);
3847 $output_rules .= $c->subst_string . "$name:\n";
3848 }
3849 }
3850 return $rule;
3851 }
3854 # $BOOLEAN
3855 # &for_dist_common ($A, $B)
3856 # -------------------------
3857 # Subroutine for &handle_dist: sort files to dist.
3858 #
3859 # We put README first because it then becomes easier to make a
3860 # Usenet-compliant shar file (in these, README must be first).
3861 #
3862 # FIXME: do more ordering of files here.
3863 sub for_dist_common
3864 {
3865 return 0
3866 if $a eq $b;
3867 return -1
3868 if $a eq 'README';
3869 return 1
3870 if $b eq 'README';
3871 return $a cmp $b;
3872 }
3874 # handle_dist
3875 # -----------
3876 # Handle 'dist' target.
3877 sub handle_dist ()
3878 {
3879 # Substitutions for distdir.am
3880 my %transform;
3882 # Define DIST_SUBDIRS. This must always be done, regardless of the
3883 # no-dist setting: target like `distclean' or `maintainer-clean' use it.
3884 my $subdirs = var ('SUBDIRS');
3885 if ($subdirs)
3886 {
3887 # If SUBDIRS is conditionally defined, then set DIST_SUBDIRS
3888 # to all possible directories, and use it. If DIST_SUBDIRS is
3889 # defined, just use it.
3891 # Note that we check DIST_SUBDIRS first on purpose, so that
3892 # we don't call has_conditional_contents for now reason.
3893 # (In the past one project used so many conditional subdirectories
3894 # that calling has_conditional_contents on SUBDIRS caused
3895 # automake to grow to 150Mb -- this should not happen with
3896 # the current implementation of has_conditional_contents,
3897 # but it's more efficient to avoid the call anyway.)
3898 if (var ('DIST_SUBDIRS'))
3899 {
3900 }
3901 elsif ($subdirs->has_conditional_contents)
3902 {
3903 define_pretty_variable
3904 ('DIST_SUBDIRS', TRUE, INTERNAL,
3905 uniq ($subdirs->value_as_list_recursive));
3906 }
3907 else
3908 {
3909 # We always define this because that is what `distclean'
3910 # wants.
3911 define_pretty_variable ('DIST_SUBDIRS', TRUE, INTERNAL,
3912 '$(SUBDIRS)');
3913 }
3914 }
3916 # The remaining definitions are only required when a dist target is used.
3917 return if option 'no-dist';
3919 # At least one of the archive formats must be enabled.
3920 if ($relative_dir eq '.')
3921 {
3922 my $archive_defined = option 'no-dist-gzip' ? 0 : 1;
3923 $archive_defined ||=
3924 grep { option "dist-$_" } qw(shar zip tarZ bzip2 lzma xz);
3925 error (option 'no-dist-gzip',
3926 "no-dist-gzip specified but no dist-* specified, "
3927 . "at least one archive format must be enabled")
3928 unless $archive_defined;
3929 }
3931 # Look for common files that should be included in distribution.
3932 # If the aux dir is set, and it does not have a Makefile.am, then
3933 # we check for these files there as well.
3934 my $check_aux = 0;
3935 if ($relative_dir eq '.'
3936 && $config_aux_dir_set_in_configure_ac)
3937 {
3938 if (! &is_make_dir ($config_aux_dir))
3939 {
3940 $check_aux = 1;
3941 }
3942 }
3943 foreach my $cfile (@common_files)
3944 {
3945 if (dir_has_case_matching_file ($relative_dir, $cfile)
3946 # The file might be absent, but if it can be built it's ok.
3947 || rule $cfile)
3948 {
3949 &push_dist_common ($cfile);
3950 }
3952 # Don't use `elsif' here because a file might meaningfully
3953 # appear in both directories.
3954 if ($check_aux && dir_has_case_matching_file ($config_aux_dir, $cfile))
3955 {
3956 &push_dist_common ("$config_aux_dir/$cfile")
3957 }
3958 }
3960 # We might copy elements from $configure_dist_common to
3961 # %dist_common if we think we need to. If the file appears in our
3962 # directory, we would have discovered it already, so we don't
3963 # check that. But if the file is in a subdir without a Makefile,
3964 # we want to distribute it here if we are doing `.'. Ugly!
3965 if ($relative_dir eq '.')
3966 {
3967 foreach my $file (split (' ' , $configure_dist_common))
3968 {
3969 push_dist_common ($file)
3970 unless is_make_dir (dirname ($file));
3971 }
3972 }
3974 # Files to distributed. Don't use ->value_as_list_recursive
3975 # as it recursively expands `$(dist_pkgdata_DATA)' etc.
3976 my @dist_common = split (' ', rvar ('DIST_COMMON')->variable_value);
3977 @dist_common = uniq (sort for_dist_common (@dist_common));
3978 variable_delete 'DIST_COMMON';
3979 define_pretty_variable ('DIST_COMMON', TRUE, INTERNAL, @dist_common);
3981 # Now that we've processed DIST_COMMON, disallow further attempts
3982 # to set it.
3983 $handle_dist_run = 1;
3985 # Scan EXTRA_DIST to see if we need to distribute anything from a
3986 # subdir. If so, add it to the list. I didn't want to do this
3987 # originally, but there were so many requests that I finally
3988 # relented.
3989 my $extra_dist = var ('EXTRA_DIST');
3991 $transform{'DISTCHECK-HOOK'} = !! rule 'distcheck-hook';
3992 $transform{'GETTEXT'} = $seen_gettext && !$seen_gettext_external;
3994 # If the target `dist-hook' exists, make sure it is run. This
3995 # allows users to do random weird things to the distribution
3996 # before it is packaged up.
3997 push (@dist_targets, 'dist-hook')
3998 if user_phony_rule 'dist-hook';
3999 $transform{'DIST-TARGETS'} = join (' ', @dist_targets);
4001 my $flm = option ('filename-length-max');
4002 my $filename_filter = $flm ? '.' x $flm->[1] : '';
4004 $output_rules .= &file_contents ('distdir',
4005 new Automake::Location,
4006 %transform,
4007 FILENAME_FILTER => $filename_filter);
4008 }
4011 # check_directory ($NAME, $WHERE)
4012 # -------------------------------
4013 # Ensure $NAME is a directory, and that it uses a sane name.
4014 # Use $WHERE as a location in the diagnostic, if any.
4015 sub check_directory ($$)
4016 {
4017 my ($dir, $where) = @_;
4019 error $where, "required directory $relative_dir/$dir does not exist"
4020 unless -d "$relative_dir/$dir";
4022 # If an `obj/' directory exists, BSD make will enter it before
4023 # reading `Makefile'. Hence the `Makefile' in the current directory
4024 # will not be read.
4025 #
4026 # % cat Makefile
4027 # all:
4028 # echo Hello
4029 # % cat obj/Makefile
4030 # all:
4031 # echo World
4032 # % make # GNU make
4033 # echo Hello
4034 # Hello
4035 # % pmake # BSD make
4036 # echo World
4037 # World
4038 msg ('portability', $where,
4039 "naming a subdirectory `obj' causes troubles with BSD make")
4040 if $dir eq 'obj';
4042 # `aux' is probably the most important of the following forbidden name,
4043 # since it's tempting to use it as an AC_CONFIG_AUX_DIR.
4044 msg ('portability', $where,
4045 "name `$dir' is reserved on W32 and DOS platforms")
4046 if grep (/^\Q$dir\E$/i, qw/aux lpt1 lpt2 lpt3 com1 com2 com3 com4 con prn/);
4047 }
4049 # check_directories_in_var ($VARIABLE)
4050 # ------------------------------------
4051 # Recursively check all items in variables $VARIABLE as directories
4052 sub check_directories_in_var ($)
4053 {
4054 my ($var) = @_;
4055 $var->traverse_recursively
4056 (sub
4057 {
4058 my ($var, $val, $cond, $full_cond) = @_;
4059 check_directory ($val, $var->rdef ($cond)->location);
4060 return ();
4061 },
4062 undef,
4063 skip_ac_subst => 1);
4064 }
4066 # &handle_subdirs ()
4067 # ------------------
4068 # Handle subdirectories.
4069 sub handle_subdirs ()
4070 {
4071 my $subdirs = var ('SUBDIRS');
4072 return
4073 unless $subdirs;
4075 check_directories_in_var $subdirs;
4077 my $dsubdirs = var ('DIST_SUBDIRS');
4078 check_directories_in_var $dsubdirs
4079 if $dsubdirs;
4081 $output_rules .= &file_contents ('subdirs', new Automake::Location);
4082 rvar ('RECURSIVE_TARGETS')->rdef (TRUE)->{'pretty'} = VAR_SORTED; # Gross!
4083 }
4086 # ($REGEN, @DEPENDENCIES)
4087 # &scan_aclocal_m4
4088 # ----------------
4089 # If aclocal.m4 creation is automated, return the list of its dependencies.
4090 sub scan_aclocal_m4 ()
4091 {
4092 my $regen_aclocal = 0;
4094 set_seen 'CONFIG_STATUS_DEPENDENCIES';
4095 set_seen 'CONFIGURE_DEPENDENCIES';
4097 if (-f 'aclocal.m4')
4098 {
4099 &define_variable ("ACLOCAL_M4", '$(top_srcdir)/aclocal.m4', INTERNAL);
4101 my $aclocal = new Automake::XFile "< aclocal.m4";
4102 my $line = $aclocal->getline;
4103 $regen_aclocal = $line =~ 'generated automatically by aclocal';
4104 }
4106 my @ac_deps = ();
4108 if (set_seen ('ACLOCAL_M4_SOURCES'))
4109 {
4110 push (@ac_deps, '$(ACLOCAL_M4_SOURCES)');
4111 msg_var ('obsolete', 'ACLOCAL_M4_SOURCES',
4112 "`ACLOCAL_M4_SOURCES' is obsolete.\n"
4113 . "It should be safe to simply remove it.");
4114 }
4116 # Note that it might be possible that aclocal.m4 doesn't exist but
4117 # should be auto-generated. This case probably isn't very
4118 # important.
4120 return ($regen_aclocal, @ac_deps);
4121 }
4124 # Helper function for substitute_ac_subst_variables.
4125 sub substitute_ac_subst_variables_worker($)
4126 {
4127 my ($token) = @_;
4128 return "\@$token\@" if var $token;
4129 return "\${$token\}";
4130 }
4132 # substitute_ac_subst_variables ($TEXT)
4133 # -------------------------------------
4134 # Replace any occurrence of ${FOO} in $TEXT by @FOO@ if FOO is an AC_SUBST
4135 # variable.
4136 sub substitute_ac_subst_variables ($)
4137 {
4138 my ($text) = @_;
4139 $text =~ s/\${([^ \t=:+{}]+)}/&substitute_ac_subst_variables_worker ($1)/ge;
4140 return $text;
4141 }
4143 # @DEPENDENCIES
4144 # &prepend_srcdir (@INPUTS)
4145 # -------------------------
4146 # Prepend $(srcdir) or $(top_srcdir) to all @INPUTS. The idea is that
4147 # if an input file has a directory part the same as the current
4148 # directory, then the directory part is simply replaced by $(srcdir).
4149 # But if the directory part is different, then $(top_srcdir) is
4150 # prepended.
4151 sub prepend_srcdir (@)
4152 {
4153 my (@inputs) = @_;
4154 my @newinputs;
4156 foreach my $single (@inputs)
4157 {
4158 if (dirname ($single) eq $relative_dir)
4159 {
4160 push (@newinputs, '$(srcdir)/' . basename ($single));
4161 }
4162 else
4163 {
4164 push (@newinputs, '$(top_srcdir)/' . $single);
4165 }
4166 }
4167 return @newinputs;
4168 }
4170 # @DEPENDENCIES
4171 # rewrite_inputs_into_dependencies ($OUTPUT, @INPUTS)
4172 # ---------------------------------------------------
4173 # Compute a list of dependencies appropriate for the rebuild
4174 # rule of
4175 # AC_CONFIG_FILES($OUTPUT:$INPUT[0]:$INPUTS[1]:...)
4176 # Also distribute $INPUTs which are not built by another AC_CONFIG_FOOs.
4177 sub rewrite_inputs_into_dependencies ($@)
4178 {
4179 my ($file, @inputs) = @_;
4180 my @res = ();
4182 for my $i (@inputs)
4183 {
4184 # We cannot create dependencies on shell variables.
4185 next if (substitute_ac_subst_variables $i) =~ /\$/;
4187 if (exists $ac_config_files_location{$i} && $i ne $file)
4188 {
4189 my $di = dirname $i;
4190 if ($di eq $relative_dir)
4191 {
4192 $i = basename $i;
4193 }
4194 # In the top-level Makefile we do not use $(top_builddir), because
4195 # we are already there, and since the targets are built without
4196 # a $(top_builddir), it helps BSD Make to match them with
4197 # dependencies.
4198 elsif ($relative_dir ne '.')
4199 {
4200 $i = '$(top_builddir)/' . $i;
4201 }
4202 }
4203 else
4204 {
4205 msg ('error', $ac_config_files_location{$file},
4206 "required file `$i' not found")
4207 unless $i =~ /\$/ || exists $output_files{$i} || -f $i;
4208 ($i) = prepend_srcdir ($i);
4209 push_dist_common ($i);
4210 }
4211 push @res, $i;
4212 }
4213 return @res;
4214 }
4218 # &handle_configure ($MAKEFILE_AM, $MAKEFILE_IN, $MAKEFILE, @INPUTS)
4219 # ------------------------------------------------------------------
4220 # Handle remaking and configure stuff.
4221 # We need the name of the input file, to do proper remaking rules.
4222 sub handle_configure ($$$@)
4223 {
4224 my ($makefile_am, $makefile_in, $makefile, @inputs) = @_;
4226 prog_error 'empty @inputs'
4227 unless @inputs;
4229 my ($rel_makefile_am, $rel_makefile_in) = prepend_srcdir ($makefile_am,
4230 $makefile_in);
4231 my $rel_makefile = basename $makefile;
4233 my $colon_infile = ':' . join (':', @inputs);
4234 $colon_infile = '' if $colon_infile eq ":$makefile.in";
4235 my @rewritten = rewrite_inputs_into_dependencies ($makefile, @inputs);
4236 my ($regen_aclocal_m4, @aclocal_m4_deps) = scan_aclocal_m4;
4237 define_pretty_variable ('am__aclocal_m4_deps', TRUE, INTERNAL,
4238 @configure_deps, @aclocal_m4_deps,
4239 '$(top_srcdir)/' . $configure_ac);
4240 my @configuredeps = ('$(am__aclocal_m4_deps)', '$(CONFIGURE_DEPENDENCIES)');
4241 push @configuredeps, '$(ACLOCAL_M4)' if -f 'aclocal.m4';
4242 define_pretty_variable ('am__configure_deps', TRUE, INTERNAL,
4243 @configuredeps);
4245 my $automake_options = '--' . (global_option 'cygnus' ? 'cygnus' : $strictness_name)
4246 . (global_option 'no-dependencies' ? ' --ignore-deps' : '');
4248 $output_rules .= file_contents
4249 ('configure',
4250 new Automake::Location,
4251 MAKEFILE => $rel_makefile,
4252 'MAKEFILE-DEPS' => "@rewritten",
4253 'CONFIG-MAKEFILE' => ($relative_dir eq '.') ? '$@' : '$(subdir)/$@',
4254 'MAKEFILE-IN' => $rel_makefile_in,
4255 'HAVE-MAKEFILE-IN-DEPS' => (@include_stack > 0),
4256 'MAKEFILE-IN-DEPS' => "@include_stack",
4257 'MAKEFILE-AM' => $rel_makefile_am,
4258 'AUTOMAKE-OPTIONS' => $automake_options,
4259 'MAKEFILE-AM-SOURCES' => "$makefile$colon_infile",
4260 'REGEN-ACLOCAL-M4' => $regen_aclocal_m4,
4261 VERBOSE => verbose_flag ('GEN'));
4263 if ($relative_dir eq '.')
4264 {
4265 &push_dist_common ('acconfig.h')
4266 if -f 'acconfig.h';
4267 }
4269 # If we have a configure header, require it.
4270 my $hdr_index = 0;
4271 my @distclean_config;
4272 foreach my $spec (@config_headers)
4273 {
4274 $hdr_index += 1;
4275 # $CONFIG_H_PATH: config.h from top level.
4276 my ($config_h_path, @ins) = split_config_file_spec ($spec);
4277 my $config_h_dir = dirname ($config_h_path);
4279 # If the header is in the current directory we want to build
4280 # the header here. Otherwise, if we're at the topmost
4281 # directory and the header's directory doesn't have a
4282 # Makefile, then we also want to build the header.
4283 if ($relative_dir eq $config_h_dir
4284 || ($relative_dir eq '.' && ! &is_make_dir ($config_h_dir)))
4285 {
4286 my ($cn_sans_dir, $stamp_dir);
4287 if ($relative_dir eq $config_h_dir)
4288 {
4289 $cn_sans_dir = basename ($config_h_path);
4290 $stamp_dir = '';
4291 }
4292 else
4293 {
4294 $cn_sans_dir = $config_h_path;
4295 if ($config_h_dir eq '.')
4296 {
4297 $stamp_dir = '';
4298 }
4299 else
4300 {
4301 $stamp_dir = $config_h_dir . '/';
4302 }
4303 }
4305 # This will also distribute all inputs.
4306 @ins = rewrite_inputs_into_dependencies ($config_h_path, @ins);
4308 # Cannot define rebuild rules for filenames with shell variables.
4309 next if (substitute_ac_subst_variables $config_h_path) =~ /\$/;
4311 # Header defined in this directory.
4312 my @files;
4313 if (-f $config_h_path . '.top')
4314 {
4315 push (@files, "$cn_sans_dir.top");
4316 }
4317 if (-f $config_h_path . '.bot')
4318 {
4319 push (@files, "$cn_sans_dir.bot");
4320 }
4322 push_dist_common (@files);
4324 # For now, acconfig.h can only appear in the top srcdir.
4325 if (-f 'acconfig.h')
4326 {
4327 push (@files, '$(top_srcdir)/acconfig.h');
4328 }
4330 my $stamp = "${stamp_dir}stamp-h${hdr_index}";
4331 $output_rules .=
4332 file_contents ('remake-hdr',
4333 new Automake::Location,
4334 FILES => "@files",
4335 CONFIG_H => $cn_sans_dir,
4336 CONFIG_HIN => $ins[0],
4337 CONFIG_H_DEPS => "@ins",
4338 CONFIG_H_PATH => $config_h_path,
4339 STAMP => "$stamp");
4341 push @distclean_config, $cn_sans_dir, $stamp;
4342 }
4343 }
4345 $output_rules .= file_contents ('clean-hdr',
4346 new Automake::Location,
4347 FILES => "@distclean_config")
4348 if @distclean_config;
4350 # Distribute and define mkinstalldirs only if it is already present
4351 # in the package, for backward compatibility (some people may still
4352 # use $(mkinstalldirs)).
4353 my $mkidpath = "$config_aux_dir/mkinstalldirs";
4354 if (-f $mkidpath)
4355 {
4356 # Use require_file so that any existing script gets updated
4357 # by --force-missing.
4358 require_conf_file ($mkidpath, FOREIGN, 'mkinstalldirs');
4359 define_variable ('mkinstalldirs',
4360 "\$(SHELL) $am_config_aux_dir/mkinstalldirs", INTERNAL);
4361 }
4362 else
4363 {
4364 # Use $(install_sh), not $(MKDIR_P) because the latter requires
4365 # at least one argument, and $(mkinstalldirs) used to work
4366 # even without arguments (e.g. $(mkinstalldirs) $(conditional_dir)).
4367 define_variable ('mkinstalldirs', '$(install_sh) -d', INTERNAL);
4368 }
4370 reject_var ('CONFIG_HEADER',
4371 "`CONFIG_HEADER' is an anachronism; now determined "
4372 . "automatically\nfrom `$configure_ac'");
4374 my @config_h;
4375 foreach my $spec (@config_headers)
4376 {
4377 my ($out, @ins) = split_config_file_spec ($spec);
4378 # Generate CONFIG_HEADER define.
4379 if ($relative_dir eq dirname ($out))
4380 {
4381 push @config_h, basename ($out);
4382 }
4383 else
4384 {
4385 push @config_h, "\$(top_builddir)/$out";
4386 }
4387 }
4388 define_variable ("CONFIG_HEADER", "@config_h", INTERNAL)
4389 if @config_h;
4391 # Now look for other files in this directory which must be remade
4392 # by config.status, and generate rules for them.
4393 my @actual_other_files = ();
4394 # These get cleaned only in a VPATH build.
4395 my @actual_other_vpath_files = ();
4396 foreach my $lfile (@other_input_files)
4397 {
4398 my $file;
4399 my @inputs;
4400 if ($lfile =~ /^([^:]*):(.*)$/)
4401 {
4402 # This is the ":" syntax of AC_OUTPUT.
4403 $file = $1;
4404 @inputs = split (':', $2);
4405 }
4406 else
4407 {
4408 # Normal usage.
4409 $file = $lfile;
4410 @inputs = $file . '.in';
4411 }
4413 # Automake files should not be stored in here, but in %MAKE_LIST.
4414 prog_error ("$lfile in \@other_input_files\n"
4415 . "\@other_input_files = (@other_input_files)")
4416 if -f $file . '.am';
4418 my $local = basename ($file);
4420 # We skip files that aren't in this directory. However, if
4421 # the file's directory does not have a Makefile, and we are
4422 # currently doing `.', then we create a rule to rebuild the
4423 # file in the subdir.
4424 my $fd = dirname ($file);
4425 if ($fd ne $relative_dir)
4426 {
4427 if ($relative_dir eq '.' && ! &is_make_dir ($fd))
4428 {
4429 $local = $file;
4430 }
4431 else
4432 {
4433 next;
4434 }
4435 }
4437 my @rewritten_inputs = rewrite_inputs_into_dependencies ($file, @inputs);
4439 # Cannot output rules for shell variables.
4440 next if (substitute_ac_subst_variables $local) =~ /\$/;
4442 my $condstr = '';
4443 my $cond = $ac_config_files_condition{$lfile};
4444 if (defined $cond)
4445 {
4446 $condstr = $cond->subst_string;
4447 Automake::Rule::define ($local, $configure_ac, RULE_AUTOMAKE, $cond,
4448 $ac_config_files_location{$file});
4449 }
4450 $output_rules .= ($condstr . $local . ': '
4451 . '$(top_builddir)/config.status '
4452 . "@rewritten_inputs\n"
4453 . $condstr . "\t"
4454 . 'cd $(top_builddir) && '
4455 . '$(SHELL) ./config.status '
4456 . ($relative_dir eq '.' ? '' : '$(subdir)/')
4457 . '$@'
4458 . "\n");
4459 push (@actual_other_files, $local);
4460 }
4462 # For links we should clean destinations and distribute sources.
4463 foreach my $spec (@config_links)
4464 {
4465 my ($link, $file) = split /:/, $spec;
4466 # Some people do AC_CONFIG_LINKS($computed). We only handle
4467 # the DEST:SRC form.
4468 next unless $file;
4469 my $where = $ac_config_files_location{$link};
4471 # Skip destinations that contain shell variables.
4472 if ((substitute_ac_subst_variables $link) !~ /\$/)
4473 {
4474 # We skip links that aren't in this directory. However, if
4475 # the link's directory does not have a Makefile, and we are
4476 # currently doing `.', then we add the link to CONFIG_CLEAN_FILES
4477 # in `.'s Makefile.in.
4478 my $local = basename ($link);
4479 my $fd = dirname ($link);
4480 if ($fd ne $relative_dir)
4481 {
4482 if ($relative_dir eq '.' && ! &is_make_dir ($fd))
4483 {
4484 $local = $link;
4485 }
4486 else
4487 {
4488 $local = undef;
4489 }
4490 }
4491 if ($file ne $link)
4492 {
4493 push @actual_other_files, $local if $local;
4494 }
4495 else
4496 {
4497 push @actual_other_vpath_files, $local if $local;
4498 }
4499 }
4501 # Do not process sources that contain shell variables.
4502 if ((substitute_ac_subst_variables $file) !~ /\$/)
4503 {
4504 my $fd = dirname ($file);
4506 # We distribute files that are in this directory.
4507 # At the top-level (`.') we also distribute files whose
4508 # directory does not have a Makefile.
4509 if (($fd eq $relative_dir)
4510 || ($relative_dir eq '.' && ! &is_make_dir ($fd)))
4511 {
4512 # The following will distribute $file as a side-effect when
4513 # it is appropriate (i.e., when $file is not already an output).
4514 # We do not need the result, just the side-effect.
4515 rewrite_inputs_into_dependencies ($link, $file);
4516 }
4517 }
4518 }
4520 # These files get removed by "make distclean".
4521 define_pretty_variable ('CONFIG_CLEAN_FILES', TRUE, INTERNAL,
4522 @actual_other_files);
4523 define_pretty_variable ('CONFIG_CLEAN_VPATH_FILES', TRUE, INTERNAL,
4524 @actual_other_vpath_files);
4525 }
4527 # Handle C headers.
4528 sub handle_headers
4529 {
4530 my @r = &am_install_var ('-defaultdist', 'header', 'HEADERS', 'include',
4531 'oldinclude', 'pkginclude',
4532 'noinst', 'check');
4533 foreach (@r)
4534 {
4535 next unless $_->[1] =~ /\..*$/;
4536 &saw_extension ($&);
4537 }
4538 }
4540 sub handle_gettext
4541 {
4542 return if ! $seen_gettext || $relative_dir ne '.';
4544 my $subdirs = var 'SUBDIRS';
4546 if (! $subdirs)
4547 {
4548 err_ac "AM_GNU_GETTEXT used but SUBDIRS not defined";
4549 return;
4550 }
4552 # Perform some sanity checks to help users get the right setup.
4553 # We disable these tests when po/ doesn't exist in order not to disallow
4554 # unusual gettext setups.
4555 #
4556 # Bruno Haible:
4557 # | The idea is:
4558 # |
4559 # | 1) If a package doesn't have a directory po/ at top level, it
4560 # | will likely have multiple po/ directories in subpackages.
4561 # |
4562 # | 2) It is useful to warn for the absence of intl/ if AM_GNU_GETTEXT
4563 # | is used without 'external'. It is also useful to warn for the
4564 # | presence of intl/ if AM_GNU_GETTEXT([external]) is used. Both
4565 # | warnings apply only to the usual layout of packages, therefore
4566 # | they should both be disabled if no po/ directory is found at
4567 # | top level.
4569 if (-d 'po')
4570 {
4571 my @subdirs = $subdirs->value_as_list_recursive;
4573 msg_var ('syntax', $subdirs,
4574 "AM_GNU_GETTEXT used but `po' not in SUBDIRS")
4575 if ! grep ($_ eq 'po', @subdirs);
4577 # intl/ is not required when AM_GNU_GETTEXT is called with the
4578 # `external' option and AM_GNU_GETTEXT_INTL_SUBDIR is not called.
4579 msg_var ('syntax', $subdirs,
4580 "AM_GNU_GETTEXT used but `intl' not in SUBDIRS")
4581 if (! ($seen_gettext_external && ! $seen_gettext_intl)
4582 && ! grep ($_ eq 'intl', @subdirs));
4584 # intl/ should not be used with AM_GNU_GETTEXT([external]), except
4585 # if AM_GNU_GETTEXT_INTL_SUBDIR is called.
4586 msg_var ('syntax', $subdirs,
4587 "`intl' should not be in SUBDIRS when "
4588 . "AM_GNU_GETTEXT([external]) is used")
4589 if ($seen_gettext_external && ! $seen_gettext_intl
4590 && grep ($_ eq 'intl', @subdirs));
4591 }
4593 require_file ($ac_gettext_location, GNU, 'ABOUT-NLS');
4594 }
4596 # Handle footer elements.
4597 sub handle_footer
4598 {
4599 reject_rule ('.SUFFIXES',
4600 "use variable `SUFFIXES', not target `.SUFFIXES'");
4602 # Note: AIX 4.1 /bin/make will fail if any suffix rule appears
4603 # before .SUFFIXES. So we make sure that .SUFFIXES appears before
4604 # anything else, by sticking it right after the default: target.
4605 $output_header .= ".SUFFIXES:\n";
4606 my $suffixes = var 'SUFFIXES';
4607 my @suffixes = Automake::Rule::suffixes;
4608 if (@suffixes || $suffixes)
4609 {
4610 # Make sure SUFFIXES has unique elements. Sort them to ensure
4611 # the output remains consistent. However, $(SUFFIXES) is
4612 # always at the start of the list, unsorted. This is done
4613 # because make will choose rules depending on the ordering of
4614 # suffixes, and this lets the user have some control. Push
4615 # actual suffixes, and not $(SUFFIXES). Some versions of make
4616 # do not like variable substitutions on the .SUFFIXES line.
4617 my @user_suffixes = ($suffixes
4618 ? $suffixes->value_as_list_recursive : ());
4620 my %suffixes = map { $_ => 1 } @suffixes;
4621 delete @suffixes{@user_suffixes};
4623 $output_header .= (".SUFFIXES: "
4624 . join (' ', @user_suffixes, sort keys %suffixes)
4625 . "\n");
4626 }
4628 $output_trailer .= file_contents ('footer', new Automake::Location);
4629 }
4632 # Generate `make install' rules.
4633 sub handle_install ()
4634 {
4635 $output_rules .= &file_contents
4636 ('install',
4637 new Automake::Location,
4638 maybe_BUILT_SOURCES => (set_seen ('BUILT_SOURCES')
4639 ? (" \$(BUILT_SOURCES)\n"
4640 . "\t\$(MAKE) \$(AM_MAKEFLAGS)")
4641 : ''),
4642 'installdirs-local' => (user_phony_rule 'installdirs-local'
4643 ? ' installdirs-local' : ''),
4644 am__installdirs => variable_value ('am__installdirs') || '');
4645 }
4648 # Deal with all and all-am.
4649 sub handle_all ($)
4650 {
4651 my ($makefile) = @_;
4653 # Output `all-am'.
4655 # Put this at the beginning for the sake of non-GNU makes. This
4656 # is still wrong if these makes can run parallel jobs. But it is
4657 # right enough.
4658 unshift (@all, basename ($makefile));
4660 foreach my $spec (@config_headers)
4661 {
4662 my ($out, @ins) = split_config_file_spec ($spec);
4663 push (@all, basename ($out))
4664 if dirname ($out) eq $relative_dir;
4665 }
4667 # Install `all' hooks.
4668 push (@all, "all-local")
4669 if user_phony_rule "all-local";
4671 &pretty_print_rule ("all-am:", "\t\t", @all);
4672 &depend ('.PHONY', 'all-am', 'all');
4675 # Output `all'.
4677 my @local_headers = ();
4678 push @local_headers, '$(BUILT_SOURCES)'
4679 if var ('BUILT_SOURCES');
4680 foreach my $spec (@config_headers)
4681 {
4682 my ($out, @ins) = split_config_file_spec ($spec);
4683 push @local_headers, basename ($out)
4684 if dirname ($out) eq $relative_dir;
4685 }
4687 if (@local_headers)
4688 {
4689 # We need to make sure config.h is built before we recurse.
4690 # We also want to make sure that built sources are built
4691 # before any ordinary `all' targets are run. We can't do this
4692 # by changing the order of dependencies to the "all" because
4693 # that breaks when using parallel makes. Instead we handle
4694 # things explicitly.
4695 $output_all .= ("all: @local_headers"
4696 . "\n\t"
4697 . '$(MAKE) $(AM_MAKEFLAGS) '
4698 . (var ('SUBDIRS') ? 'all-recursive' : 'all-am')
4699 . "\n\n");
4700 depend ('.MAKE', 'all');
4701 }
4702 else
4703 {
4704 $output_all .= "all: " . (var ('SUBDIRS')
4705 ? 'all-recursive' : 'all-am') . "\n\n";
4706 }
4707 }
4710 # &do_check_merge_target ()
4711 # -------------------------
4712 # Handle check merge target specially.
4713 sub do_check_merge_target ()
4714 {
4715 # Include user-defined local form of target.
4716 push @check_tests, 'check-local'
4717 if user_phony_rule 'check-local';
4719 # In --cygnus mode, check doesn't depend on all.
4720 if (option 'cygnus')
4721 {
4722 # Just run the local check rules.
4723 pretty_print_rule ('check-am:', "\t\t", @check);
4724 }
4725 else
4726 {
4727 # The check target must depend on the local equivalent of
4728 # `all', to ensure all the primary targets are built. Then it
4729 # must build the local check rules.
4730 $output_rules .= "check-am: all-am\n";
4731 if (@check)
4732 {
4733 pretty_print_rule ("\t\$(MAKE) \$(AM_MAKEFLAGS)", "\t ",
4734 @check);
4735 depend ('.MAKE', 'check-am');
4736 }
4737 }
4738 if (@check_tests)
4739 {
4740 pretty_print_rule ("\t\$(MAKE) \$(AM_MAKEFLAGS)", "\t ",
4741 @check_tests);
4742 depend ('.MAKE', 'check-am');
4743 }
4745 depend '.PHONY', 'check', 'check-am';
4746 # Handle recursion. We have to honor BUILT_SOURCES like for `all:'.
4747 $output_rules .= ("check: "
4748 . (var ('BUILT_SOURCES')
4749 ? "\$(BUILT_SOURCES)\n\t\$(MAKE) \$(AM_MAKEFLAGS) "
4750 : '')
4751 . (var ('SUBDIRS') ? 'check-recursive' : 'check-am')
4752 . "\n");
4753 depend ('.MAKE', 'check')
4754 if var ('BUILT_SOURCES');
4755 }
4757 # handle_clean ($MAKEFILE)
4758 # ------------------------
4759 # Handle all 'clean' targets.
4760 sub handle_clean ($)
4761 {
4762 my ($makefile) = @_;
4764 # Clean the files listed in user variables if they exist.
4765 $clean_files{'$(MOSTLYCLEANFILES)'} = MOSTLY_CLEAN
4766 if var ('MOSTLYCLEANFILES');
4767 $clean_files{'$(CLEANFILES)'} = CLEAN
4768 if var ('CLEANFILES');
4769 $clean_files{'$(DISTCLEANFILES)'} = DIST_CLEAN
4770 if var ('DISTCLEANFILES');
4771 $clean_files{'$(MAINTAINERCLEANFILES)'} = MAINTAINER_CLEAN
4772 if var ('MAINTAINERCLEANFILES');
4774 # Built sources are automatically removed by maintainer-clean.
4775 $clean_files{'$(BUILT_SOURCES)'} = MAINTAINER_CLEAN
4776 if var ('BUILT_SOURCES');
4778 # Compute a list of "rm"s to run for each target.
4779 my %rms = (MOSTLY_CLEAN, [],
4780 CLEAN, [],
4781 DIST_CLEAN, [],
4782 MAINTAINER_CLEAN, []);
4784 foreach my $file (keys %clean_files)
4785 {
4786 my $when = $clean_files{$file};
4787 prog_error 'invalid entry in %clean_files'
4788 unless exists $rms{$when};
4790 my $rm = "rm -f $file";
4791 # If file is a variable, make sure when don't call `rm -f' without args.
4792 $rm ="test -z \"$file\" || $rm"
4793 if ($file =~ /^\s*\$(\(.*\)|\{.*\})\s*$/);
4795 push @{$rms{$when}}, "\t-$rm\n";
4796 }
4798 $output_rules .= &file_contents
4799 ('clean',
4800 new Automake::Location,
4801 MOSTLYCLEAN_RMS => join ('', sort @{$rms{&MOSTLY_CLEAN}}),
4802 CLEAN_RMS => join ('', sort @{$rms{&CLEAN}}),
4803 DISTCLEAN_RMS => join ('', sort @{$rms{&DIST_CLEAN}}),
4804 MAINTAINER_CLEAN_RMS => join ('', sort @{$rms{&MAINTAINER_CLEAN}}),
4805 MAKEFILE => basename $makefile,
4806 );
4807 }
4810 # &target_cmp ($A, $B)
4811 # --------------------
4812 # Subroutine for &handle_factored_dependencies to let `.PHONY' and
4813 # other `.TARGETS' be last.
4814 sub target_cmp
4815 {
4816 return 0 if $a eq $b;
4818 my $a1 = substr ($a, 0, 1);
4819 my $b1 = substr ($b, 0, 1);
4820 if ($a1 ne $b1)
4821 {
4822 return -1 if $b1 eq '.';
4823 return 1 if $a1 eq '.';
4824 }
4825 return $a cmp $b;
4826 }
4829 # &handle_factored_dependencies ()
4830 # --------------------------------
4831 # Handle everything related to gathered targets.
4832 sub handle_factored_dependencies
4833 {
4834 # Reject bad hooks.
4835 foreach my $utarg ('uninstall-data-local', 'uninstall-data-hook',
4836 'uninstall-exec-local', 'uninstall-exec-hook',
4837 'uninstall-dvi-local',
4838 'uninstall-html-local',
4839 'uninstall-info-local',
4840 'uninstall-pdf-local',
4841 'uninstall-ps-local')
4842 {
4843 my $x = $utarg;
4844 $x =~ s/-.*-/-/;
4845 reject_rule ($utarg, "use `$x', not `$utarg'");
4846 }
4848 reject_rule ('install-local',
4849 "use `install-data-local' or `install-exec-local', "
4850 . "not `install-local'");
4852 reject_rule ('install-hook',
4853 "use `install-data-hook' or `install-exec-hook', "
4854 . "not `install-hook'");
4856 # Install the -local hooks.
4857 foreach (keys %dependencies)
4858 {
4859 # Hooks are installed on the -am targets.
4860 s/-am$// or next;
4861 depend ("$_-am", "$_-local")
4862 if user_phony_rule "$_-local";
4863 }
4865 # Install the -hook hooks.
4866 # FIXME: Why not be as liberal as we are with -local hooks?
4867 foreach ('install-exec', 'install-data', 'uninstall')
4868 {
4869 if (user_phony_rule "$_-hook")
4870 {
4871 depend ('.MAKE', "$_-am");
4872 register_action("$_-am",
4873 ("\t\@\$(NORMAL_INSTALL)\n"
4874 . "\t\$(MAKE) \$(AM_MAKEFLAGS) $_-hook"));
4875 }
4876 }
4878 # All the required targets are phony.
4879 depend ('.PHONY', keys %required_targets);
4881 # Actually output gathered targets.
4882 foreach (sort target_cmp keys %dependencies)
4883 {
4884 # If there is nothing about this guy, skip it.
4885 next
4886 unless (@{$dependencies{$_}}
4887 || $actions{$_}
4888 || $required_targets{$_});
4890 # Define gathered targets in undefined conditions.
4891 # FIXME: Right now we must handle .PHONY as an exception,
4892 # because people write things like
4893 # .PHONY: myphonytarget
4894 # to append dependencies. This would not work if Automake
4895 # refrained from defining its own .PHONY target as it does
4896 # with other overridden targets.
4897 # Likewise for `.MAKE'.
4898 my @undefined_conds = (TRUE,);
4899 if ($_ ne '.PHONY' && $_ ne '.MAKE')
4900 {
4901 @undefined_conds =
4902 Automake::Rule::define ($_, 'internal',
4903 RULE_AUTOMAKE, TRUE, INTERNAL);
4904 }
4905 my @uniq_deps = uniq (sort @{$dependencies{$_}});
4906 foreach my $cond (@undefined_conds)
4907 {
4908 my $condstr = $cond->subst_string;
4909 &pretty_print_rule ("$condstr$_:", "$condstr\t", @uniq_deps);
4910 $output_rules .= $actions{$_} if defined $actions{$_};
4911 $output_rules .= "\n";
4912 }
4913 }
4914 }
4917 # &handle_tests_dejagnu ()
4918 # ------------------------
4919 sub handle_tests_dejagnu
4920 {
4921 push (@check_tests, 'check-DEJAGNU');
4922 $output_rules .= file_contents ('dejagnu', new Automake::Location);
4923 }
4925 # is_valid_test_extension ($EXT)
4926 # ------------------------------
4927 # Return true if $EXT can appear in $(TEST_EXTENSIONS), return false
4928 # otherwise.
4929 sub is_valid_test_extension ($)
4930 {
4931 my $ext = shift;
4932 return 1
4933 if ($ext =~ /^\.[a-zA-Z_][a-zA-Z0-9_]*$/);
4934 return 1
4935 if (exists $configure_vars{'EXEEXT'} && $ext eq subst ('EXEEXT'));
4936 return 0;
4937 }
4939 # Handle TESTS variable and other checks.
4940 sub handle_tests
4941 {
4942 if (option 'dejagnu')
4943 {
4944 &handle_tests_dejagnu;
4945 }
4946 else
4947 {
4948 foreach my $c ('DEJATOOL', 'RUNTEST', 'RUNTESTFLAGS')
4949 {
4950 reject_var ($c, "`$c' defined but `dejagnu' not in "
4951 . "`AUTOMAKE_OPTIONS'");
4952 }
4953 }
4955 if (var ('TESTS'))
4956 {
4957 push (@check_tests, 'check-TESTS');
4958 $output_rules .= &file_contents ('check', new Automake::Location,
4959 COLOR => !! option 'color-tests',
4960 PARALLEL_TESTS => !! option 'parallel-tests');
4962 # Tests that are known programs should have $(EXEEXT) appended.
4963 # For matching purposes, we need to adjust XFAIL_TESTS as well.
4964 append_exeext { exists $known_programs{$_[0]} } 'TESTS';
4965 append_exeext { exists $known_programs{$_[0]} } 'XFAIL_TESTS'
4966 if (var ('XFAIL_TESTS'));
4968 if (option 'parallel-tests')
4969 {
4970 define_variable ('TEST_SUITE_LOG', 'test-suite.log', INTERNAL);
4971 define_variable ('TEST_SUITE_HTML', '$(TEST_SUITE_LOG:.log=.html)', INTERNAL);
4972 my $suff = '.test';
4973 my $at_exeext = '';
4974 my $handle_exeext = exists $configure_vars{'EXEEXT'};
4975 if ($handle_exeext)
4976 {
4977 $at_exeext = subst ('EXEEXT');
4978 $suff = $at_exeext . ' ' . $suff;
4979 }
4980 if (! var 'TEST_EXTENSIONS')
4981 {
4982 define_variable ('TEST_EXTENSIONS', $suff, INTERNAL);
4983 }
4984 my $var = var 'TEST_EXTENSIONS';
4985 # Currently, we are not able to deal with conditional contents
4986 # in TEST_EXTENSIONS.
4987 if ($var->has_conditional_contents)
4988 {
4989 msg_var 'unsupported', $var,
4990 "`TEST_EXTENSIONS' cannot have conditional contents";
4991 }
4992 my @test_suffixes = $var->value_as_list_recursive;
4993 if ((my @invalid_test_suffixes =
4994 grep { !is_valid_test_extension $_ } @test_suffixes) > 0)
4995 {
4996 error $var->rdef (TRUE)->location,
4997 "invalid test extensions: @invalid_test_suffixes";
4998 }
4999 @test_suffixes = grep { is_valid_test_extension $_ } @test_suffixes;
5000 if ($handle_exeext)
5001 {
5002 unshift (@test_suffixes, $at_exeext)
5003 unless $test_suffixes[0] eq $at_exeext;
5004 }
5005 unshift (@test_suffixes, '');
5007 transform_variable_recursively
5008 ('TESTS', 'TEST_LOGS', 'am__testlogs', 1, INTERNAL,
5009 sub {
5010 my ($subvar, $val, $cond, $full_cond) = @_;
5011 my $obj = $val;
5012 return $obj
5013 if $val =~ /^\@.*\@$/;
5014 $obj =~ s/\$\(EXEEXT\)$//o;
5016 if ($val =~ /(\$\((top_)?srcdir\))\//o)
5017 {
5018 msg ('error', $subvar->rdef ($cond)->location,
5019 "parallel-tests: using `$1' in TESTS is currently broken: `$val'");
5020 }
5022 foreach my $test_suffix (@test_suffixes)
5023 {
5024 next
5025 if $test_suffix eq $at_exeext || $test_suffix eq '';
5026 return substr ($obj, 0, length ($obj) - length ($test_suffix)) . '.log'
5027 if substr ($obj, - length ($test_suffix)) eq $test_suffix;
5028 }
5029 $obj .= '.log';
5030 my $compile = 'LOG_COMPILE';
5031 define_variable ($compile,
5032 '$(LOG_COMPILER) $(AM_LOG_FLAGS) $(LOG_FLAGS)', INTERNAL);
5033 $output_rules .= file_contents ('check2', new Automake::Location,
5034 GENERIC => 0,
5035 OBJ => $obj,
5036 SOURCE => $val,
5037 COMPILE =>'$(' . $compile . ')',
5038 EXT => '',
5039 am__EXEEXT => 'FALSE');
5040 return $obj;
5041 });
5043 my $nhelper=1;
5044 my $prev = 'TESTS';
5045 my $post = '';
5046 my $last_suffix = $test_suffixes[$#test_suffixes];
5047 my $cur = '';
5048 foreach my $test_suffix (@test_suffixes)
5049 {
5050 if ($test_suffix eq $last_suffix)
5051 {
5052 $cur = 'TEST_LOGS';
5053 }
5054 else
5055 {
5056 $cur = 'am__test_logs' . $nhelper;
5057 }
5058 define_variable ($cur,
5059 '$(' . $prev . ':' . $test_suffix . $post . '=.log)', INTERNAL);
5060 $post = '.log';
5061 $prev = $cur;
5062 $nhelper++;
5063 if ($test_suffix ne $at_exeext && $test_suffix ne '')
5064 {
5065 (my $ext = $test_suffix) =~ s/^\.//;
5066 $ext = uc $ext;
5067 my $compile = $ext . '_LOG_COMPILE';
5068 define_variable ($compile,
5069 '$(' . $ext . '_LOG_COMPILER) $(AM_' . $ext . '_LOG_FLAGS)'
5070 . ' $(' . $ext . '_LOG_FLAGS)', INTERNAL);
5071 my $am_exeext = $handle_exeext ? 'am__EXEEXT' : 'FALSE';
5072 $output_rules .= file_contents ('check2', new Automake::Location,
5073 GENERIC => 1,
5074 OBJ => '',
5075 SOURCE => '$<',
5076 COMPILE => '$(' . $compile . ')',
5077 EXT => $test_suffix,
5078 am__EXEEXT => $am_exeext);
5079 }
5080 }
5082 define_variable ('TEST_LOGS_TMP', '$(TEST_LOGS:.log=.log-t)', INTERNAL);
5084 $clean_files{'$(TEST_LOGS_TMP)'} = MOSTLY_CLEAN;
5085 $clean_files{'$(TEST_LOGS)'} = MOSTLY_CLEAN;
5086 $clean_files{'$(TEST_SUITE_LOG)'} = MOSTLY_CLEAN;
5087 $clean_files{'$(TEST_SUITE_HTML)'} = MOSTLY_CLEAN;
5088 }
5089 }
5090 }
5092 # Handle Emacs Lisp.
5093 sub handle_emacs_lisp
5094 {
5095 my @elfiles = &am_install_var ('-candist', 'lisp', 'LISP',
5096 'lisp', 'noinst');
5098 return if ! @elfiles;
5100 define_pretty_variable ('am__ELFILES', TRUE, INTERNAL,
5101 map { $_->[1] } @elfiles);
5102 define_pretty_variable ('am__ELCFILES', TRUE, INTERNAL,
5103 '$(am__ELFILES:.el=.elc)');
5104 # This one can be overridden by users.
5105 define_pretty_variable ('ELCFILES', TRUE, INTERNAL, '$(LISP:.el=.elc)');
5107 push @all, '$(ELCFILES)';
5109 require_variables ($elfiles[0][0], "Emacs Lisp sources seen", TRUE,
5110 'EMACS', 'lispdir');
5111 require_conf_file ($elfiles[0][0], FOREIGN, 'elisp-comp');
5112 &define_variable ('elisp_comp', "$am_config_aux_dir/elisp-comp", INTERNAL);
5113 }
5115 # Handle Python
5116 sub handle_python
5117 {
5118 my @pyfiles = &am_install_var ('-defaultdist', 'python', 'PYTHON',
5119 'noinst');
5120 return if ! @pyfiles;
5122 require_variables ($pyfiles[0][0], "Python sources seen", TRUE, 'PYTHON');
5123 require_conf_file ($pyfiles[0][0], FOREIGN, 'py-compile');
5124 &define_variable ('py_compile', "$am_config_aux_dir/py-compile", INTERNAL);
5125 }
5127 # Handle Java.
5128 sub handle_java
5129 {
5130 my @sourcelist = &am_install_var ('-candist',
5131 'java', 'JAVA',
5132 'noinst', 'check');
5133 return if ! @sourcelist;
5135 my @prefixes = am_primary_prefixes ('JAVA', 1,
5136 'noinst', 'check');
5138 my $dir;
5139 my @java_sources = ();
5140 foreach my $prefix (@prefixes)
5141 {
5142 (my $curs = $prefix) =~ s/^(?:nobase_)?(?:dist_|nodist_)?//;
5144 next
5145 if $curs eq 'EXTRA';
5147 push @java_sources, '$(' . $prefix . '_JAVA' . ')';
5149 if (defined $dir)
5150 {
5151 err_var "${curs}_JAVA", "multiple _JAVA primaries in use"
5152 unless $curs eq $dir;
5153 }
5155 $dir = $curs;
5156 }
5158 define_pretty_variable ('am__java_sources', TRUE, INTERNAL,
5159 "@java_sources");
5161 if ($dir eq 'check')
5162 {
5163 push (@check, "class$dir.stamp");
5164 }
5165 else
5166 {
5167 push (@all, "class$dir.stamp");
5168 }
5169 }
5172 # Handle some of the minor options.
5173 sub handle_minor_options
5174 {
5175 if (option 'readme-alpha')
5176 {
5177 if ($relative_dir eq '.')
5178 {
5179 if ($package_version !~ /^$GNITS_VERSION_PATTERN$/)
5180 {
5181 msg ('error-gnits', $package_version_location,
5182 "version `$package_version' doesn't follow " .
5183 "Gnits standards");
5184 }
5185 if (defined $1 && -f 'README-alpha')
5186 {
5187 # This means we have an alpha release. See
5188 # GNITS_VERSION_PATTERN for details.
5189 push_dist_common ('README-alpha');
5190 }
5191 }
5192 }
5193 }
5195 ################################################################
5197 # ($OUTPUT, @INPUTS)
5198 # &split_config_file_spec ($SPEC)
5199 # -------------------------------
5200 # Decode the Autoconf syntax for config files (files, headers, links
5201 # etc.).
5202 sub split_config_file_spec ($)
5203 {
5204 my ($spec) = @_;
5205 my ($output, @inputs) = split (/:/, $spec);
5207 push @inputs, "$output.in"
5208 unless @inputs;
5210 return ($output, @inputs);
5211 }
5213 # $input
5214 # locate_am (@POSSIBLE_SOURCES)
5215 # -----------------------------
5216 # AC_CONFIG_FILES allow specifications such as Makefile:top.in:mid.in:bot.in
5217 # This functions returns the first *.in file for which a *.am exists.
5218 # It returns undef otherwise.
5219 sub locate_am (@)
5220 {
5221 my (@rest) = @_;
5222 my $input;
5223 foreach my $file (@rest)
5224 {
5225 if (($file =~ /^(.*)\.in$/) && -f "$1.am")
5226 {
5227 $input = $file;
5228 last;
5229 }
5230 }
5231 return $input;
5232 }
5234 my %make_list;
5236 # &scan_autoconf_config_files ($WHERE, $CONFIG-FILES)
5237 # ---------------------------------------------------
5238 # Study $CONFIG-FILES which is the first argument to AC_CONFIG_FILES
5239 # (or AC_OUTPUT).
5240 sub scan_autoconf_config_files ($$)
5241 {
5242 my ($where, $config_files) = @_;
5244 # Look at potential Makefile.am's.
5245 foreach (split ' ', $config_files)
5246 {
5247 # Must skip empty string for Perl 4.
5248 next if $_ eq "\\" || $_ eq '';
5250 # Handle $local:$input syntax.
5251 my ($local, @rest) = split (/:/);
5252 @rest = ("$local.in",) unless @rest;
5253 msg ('portability', $where,
5254 "Omit leading `./' from config file names such as `$local',"
5255 . "\nas not all make implementations treat `file' and `./file' equally.")
5256 if ($local =~ /^\.\//);
5257 my $input = locate_am @rest;
5258 if ($input)
5259 {
5260 # We have a file that automake should generate.
5261 $make_list{$input} = join (':', ($local, @rest));
5262 }
5263 else
5264 {
5265 # We have a file that automake should cause to be
5266 # rebuilt, but shouldn't generate itself.
5267 push (@other_input_files, $_);
5268 }
5269 $ac_config_files_location{$local} = $where;
5270 $ac_config_files_condition{$local} =
5271 new Automake::Condition (@cond_stack)
5272 if (@cond_stack);
5273 }
5274 }
5277 # &scan_autoconf_traces ($FILENAME)
5278 # ---------------------------------
5279 sub scan_autoconf_traces ($)
5280 {
5281 my ($filename) = @_;
5283 # Macros to trace, with their minimal number of arguments.
5284 #
5285 # IMPORTANT: If you add a macro here, you should also add this macro
5286 # ========= to Automake-preselection in autoconf/lib/autom4te.in.
5287 my %traced = (
5288 AC_CANONICAL_BUILD => 0,
5289 AC_CANONICAL_HOST => 0,
5290 AC_CANONICAL_TARGET => 0,
5291 AC_CONFIG_AUX_DIR => 1,
5292 AC_CONFIG_FILES => 1,
5293 AC_CONFIG_HEADERS => 1,
5294 AC_CONFIG_LIBOBJ_DIR => 1,
5295 AC_CONFIG_LINKS => 1,
5296 AC_FC_SRCEXT => 1,
5297 AC_INIT => 0,
5298 AC_LIBSOURCE => 1,
5299 AC_REQUIRE_AUX_FILE => 1,
5300 AC_SUBST_TRACE => 1,
5301 AM_AUTOMAKE_VERSION => 1,
5302 AM_CONDITIONAL => 2,
5303 AM_ENABLE_MULTILIB => 0,
5304 AM_GNU_GETTEXT => 0,
5305 AM_GNU_GETTEXT_INTL_SUBDIR => 0,
5306 AM_INIT_AUTOMAKE => 0,
5307 AM_MAINTAINER_MODE => 0,
5308 AM_PROG_CC_C_O => 0,
5309 AM_SILENT_RULES => 0,
5310 _AM_SUBST_NOTMAKE => 1,
5311 _AM_COND_IF => 1,
5312 _AM_COND_ELSE => 1,
5313 _AM_COND_ENDIF => 1,
5314 LT_SUPPORTED_TAG => 1,
5315 _LT_AC_TAGCONFIG => 0,
5316 m4_include => 1,
5317 m4_sinclude => 1,
5318 sinclude => 1,
5319 );
5321 my $traces = ($ENV{AUTOCONF} || '@am_AUTOCONF@') . " ";
5323 # Use a separator unlikely to be used, not `:', the default, which
5324 # has a precise meaning for AC_CONFIG_FILES and so on.
5325 $traces .= join (' ',
5326 map { "--trace=$_" . ':\$f:\$l::\$d::\$n::\${::}%' }
5327 (keys %traced));
5329 my $tracefh = new Automake::XFile ("$traces $filename |");
5330 verb "reading $traces";
5332 @cond_stack = ();
5333 my $where;
5335 while ($_ = $tracefh->getline)
5336 {
5337 chomp;
5338 my ($here, $depth, @args) = split (/::/);
5339 $where = new Automake::Location $here;
5340 my $macro = $args[0];
5342 prog_error ("unrequested trace `$macro'")
5343 unless exists $traced{$macro};
5345 # Skip and diagnose malformed calls.
5346 if ($#args < $traced{$macro})
5347 {
5348 msg ('syntax', $where, "not enough arguments for $macro");
5349 next;
5350 }
5352 # Alphabetical ordering please.
5353 if ($macro eq 'AC_CANONICAL_BUILD')
5354 {
5355 if ($seen_canonical <= AC_CANONICAL_BUILD)
5356 {
5357 $seen_canonical = AC_CANONICAL_BUILD;
5358 $canonical_location = $where;
5359 }
5360 }
5361 elsif ($macro eq 'AC_CANONICAL_HOST')
5362 {
5363 if ($seen_canonical <= AC_CANONICAL_HOST)
5364 {
5365 $seen_canonical = AC_CANONICAL_HOST;
5366 $canonical_location = $where;
5367 }
5368 }
5369 elsif ($macro eq 'AC_CANONICAL_TARGET')
5370 {
5371 $seen_canonical = AC_CANONICAL_TARGET;
5372 $canonical_location = $where;
5373 }
5374 elsif ($macro eq 'AC_CONFIG_AUX_DIR')
5375 {
5376 if ($seen_init_automake)
5377 {
5378 error ($where, "AC_CONFIG_AUX_DIR must be called before "
5379 . "AM_INIT_AUTOMAKE...", partial => 1);
5380 error ($seen_init_automake, "... AM_INIT_AUTOMAKE called here");
5381 }
5382 $config_aux_dir = $args[1];
5383 $config_aux_dir_set_in_configure_ac = 1;
5384 $relative_dir = '.';
5385 check_directory ($config_aux_dir, $where);
5386 }
5387 elsif ($macro eq 'AC_CONFIG_FILES')
5388 {
5389 # Look at potential Makefile.am's.
5390 scan_autoconf_config_files ($where, $args[1]);
5391 }
5392 elsif ($macro eq 'AC_CONFIG_HEADERS')
5393 {
5394 foreach my $spec (split (' ', $args[1]))
5395 {
5396 my ($dest, @src) = split (':', $spec);
5397 $ac_config_files_location{$dest} = $where;
5398 push @config_headers, $spec;
5399 }
5400 }
5401 elsif ($macro eq 'AC_CONFIG_LIBOBJ_DIR')
5402 {
5403 $config_libobj_dir = $args[1];
5404 $relative_dir = '.';
5405 check_directory ($config_libobj_dir, $where);
5406 }
5407 elsif ($macro eq 'AC_CONFIG_LINKS')
5408 {
5409 foreach my $spec (split (' ', $args[1]))
5410 {
5411 my ($dest, $src) = split (':', $spec);
5412 $ac_config_files_location{$dest} = $where;
5413 push @config_links, $spec;
5414 }
5415 }
5416 elsif ($macro eq 'AC_FC_SRCEXT')
5417 {
5418 my $suffix = $args[1];
5419 # These flags are used as %SOURCEFLAG% in depend2.am,
5420 # where the trailing space is important.
5421 $sourceflags{'.' . $suffix} = '$(FCFLAGS_' . $suffix . ') '
5422 if ($suffix eq 'f90' || $suffix eq 'f95' || $suffix eq 'f03' || $suffix eq 'f08');
5423 }
5424 elsif ($macro eq 'AC_INIT')
5425 {
5426 if (defined $args[2])
5427 {
5428 $package_version = $args[2];
5429 $package_version_location = $where;
5430 }
5431 }
5432 elsif ($macro eq 'AC_LIBSOURCE')
5433 {
5434 $libsources{$args[1]} = $here;
5435 }
5436 elsif ($macro eq 'AC_REQUIRE_AUX_FILE')
5437 {
5438 # Only remember the first time a file is required.
5439 $required_aux_file{$args[1]} = $where
5440 unless exists $required_aux_file{$args[1]};
5441 }
5442 elsif ($macro eq 'AC_SUBST_TRACE')
5443 {
5444 # Just check for alphanumeric in AC_SUBST_TRACE. If you do
5445 # AC_SUBST(5), then too bad.
5446 $configure_vars{$args[1]} = $where
5447 if $args[1] =~ /^\w+$/;
5448 }
5449 elsif ($macro eq 'AM_AUTOMAKE_VERSION')
5450 {
5451 error ($where,
5452 "version mismatch. This is Automake $VERSION,\n" .
5453 "but the definition used by this AM_INIT_AUTOMAKE\n" .
5454 "comes from Automake $args[1]. You should recreate\n" .
5455 "aclocal.m4 with aclocal and run automake again.\n",
5456 # $? = 63 is used to indicate version mismatch to missing.
5457 exit_code => 63)
5458 if $VERSION ne $args[1];
5460 $seen_automake_version = 1;
5461 }
5462 elsif ($macro eq 'AM_CONDITIONAL')
5463 {
5464 $configure_cond{$args[1]} = $where;
5465 }
5466 elsif ($macro eq 'AM_ENABLE_MULTILIB')
5467 {
5468 $seen_multilib = $where;
5469 }
5470 elsif ($macro eq 'AM_GNU_GETTEXT')
5471 {
5472 $seen_gettext = $where;
5473 $ac_gettext_location = $where;
5474 $seen_gettext_external = grep ($_ eq 'external', @args);
5475 }
5476 elsif ($macro eq 'AM_GNU_GETTEXT_INTL_SUBDIR')
5477 {
5478 $seen_gettext_intl = $where;
5479 }
5480 elsif ($macro eq 'AM_INIT_AUTOMAKE')
5481 {
5482 $seen_init_automake = $where;
5483 if (defined $args[2])
5484 {
5485 $package_version = $args[2];
5486 $package_version_location = $where;
5487 }
5488 elsif (defined $args[1])
5489 {
5490 exit $exit_code
5491 if (process_global_option_list ($where,
5492 split (' ', $args[1])));
5493 }
5494 }
5495 elsif ($macro eq 'AM_MAINTAINER_MODE')
5496 {
5497 $seen_maint_mode = $where;
5498 }
5499 elsif ($macro eq 'AM_PROG_CC_C_O')
5500 {
5501 $seen_cc_c_o = $where;
5502 }
5503 elsif ($macro eq 'AM_SILENT_RULES')
5504 {
5505 set_global_option ('silent-rules', $where);
5506 }
5507 elsif ($macro eq '_AM_COND_IF')
5508 {
5509 cond_stack_if ('', $args[1], $where);
5510 error ($where, "missing m4 quoting, macro depth $depth")
5511 if ($depth != 1);
5512 }
5513 elsif ($macro eq '_AM_COND_ELSE')
5514 {
5515 cond_stack_else ('!', $args[1], $where);
5516 error ($where, "missing m4 quoting, macro depth $depth")
5517 if ($depth != 1);
5518 }
5519 elsif ($macro eq '_AM_COND_ENDIF')
5520 {
5521 cond_stack_endif (undef, undef, $where);
5522 error ($where, "missing m4 quoting, macro depth $depth")
5523 if ($depth != 1);
5524 }
5525 elsif ($macro eq '_AM_SUBST_NOTMAKE')
5526 {
5527 $ignored_configure_vars{$args[1]} = $where;
5528 }
5529 elsif ($macro eq 'm4_include'
5530 || $macro eq 'm4_sinclude'
5531 || $macro eq 'sinclude')
5532 {
5533 # Skip missing `sinclude'd files.
5534 next if $macro ne 'm4_include' && ! -f $args[1];
5536 # Some modified versions of Autoconf don't use
5537 # frozen files. Consequently it's possible that we see all
5538 # m4_include's performed during Autoconf's startup.
5539 # Obviously we don't want to distribute Autoconf's files
5540 # so we skip absolute filenames here.
5541 push @configure_deps, '$(top_srcdir)/' . $args[1]
5542 unless $here =~ m,^(?:\w:)?[\\/],;
5543 # Keep track of the greatest timestamp.
5544 if (-e $args[1])
5545 {
5546 my $mtime = mtime $args[1];
5547 $configure_deps_greatest_timestamp = $mtime
5548 if $mtime > $configure_deps_greatest_timestamp;
5549 }
5550 }
5551 elsif ($macro eq 'LT_SUPPORTED_TAG')
5552 {
5553 $libtool_tags{$args[1]} = 1;
5554 $libtool_new_api = 1;
5555 }
5556 elsif ($macro eq '_LT_AC_TAGCONFIG')
5557 {
5558 # _LT_AC_TAGCONFIG is an old macro present in Libtool 1.5.
5559 # We use it to detect whether tags are supported. Our
5560 # preferred interface is LT_SUPPORTED_TAG, but it was
5561 # introduced in Libtool 1.6.
5562 if (0 == keys %libtool_tags)
5563 {
5564 # Hardcode the tags supported by Libtool 1.5.
5565 %libtool_tags = (CC => 1, CXX => 1, GCJ => 1, F77 => 1);
5566 }
5567 }
5568 }
5570 error ($where, "condition stack not properly closed")
5571 if (@cond_stack);
5573 $tracefh->close;
5574 }
5577 # &scan_autoconf_files ()
5578 # -----------------------
5579 # Check whether we use `configure.ac' or `configure.in'.
5580 # Scan it (and possibly `aclocal.m4') for interesting things.
5581 # We must scan aclocal.m4 because there might be AC_SUBSTs and such there.
5582 sub scan_autoconf_files ()
5583 {
5584 # Reinitialize libsources here. This isn't really necessary,
5585 # since we currently assume there is only one configure.ac. But
5586 # that won't always be the case.
5587 %libsources = ();
5589 # Keep track of the youngest configure dependency.
5590 $configure_deps_greatest_timestamp = mtime $configure_ac;
5591 if (-e 'aclocal.m4')
5592 {
5593 my $mtime = mtime 'aclocal.m4';
5594 $configure_deps_greatest_timestamp = $mtime
5595 if $mtime > $configure_deps_greatest_timestamp;
5596 }
5598 scan_autoconf_traces ($configure_ac);
5600 @configure_input_files = sort keys %make_list;
5601 # Set input and output files if not specified by user.
5602 if (! @input_files)
5603 {
5604 @input_files = @configure_input_files;
5605 %output_files = %make_list;
5606 }
5609 if (! $seen_init_automake)
5610 {
5611 err_ac ("no proper invocation of AM_INIT_AUTOMAKE was found.\nYou "
5612 . "should verify that $configure_ac invokes AM_INIT_AUTOMAKE,"
5613 . "\nthat aclocal.m4 is present in the top-level directory,\n"
5614 . "and that aclocal.m4 was recently regenerated "
5615 . "(using aclocal).");
5616 }
5617 else
5618 {
5619 if (! $seen_automake_version)
5620 {
5621 if (-f 'aclocal.m4')
5622 {
5623 error ($seen_init_automake,
5624 "your implementation of AM_INIT_AUTOMAKE comes from " .
5625 "an\nold Automake version. You should recreate " .
5626 "aclocal.m4\nwith aclocal and run automake again.\n",
5627 # $? = 63 is used to indicate version mismatch to missing.
5628 exit_code => 63);
5629 }
5630 else
5631 {
5632 error ($seen_init_automake,
5633 "no proper implementation of AM_INIT_AUTOMAKE was " .
5634 "found,\nprobably because aclocal.m4 is missing...\n" .
5635 "You should run aclocal to create this file, then\n" .
5636 "run automake again.\n");
5637 }
5638 }
5639 }
5641 locate_aux_dir ();
5643 # Reorder @input_files so that the Makefile that distributes aux
5644 # files is processed last. This is important because each directory
5645 # can require auxiliary scripts and we should wait until they have
5646 # been installed before distributing them.
5648 # The Makefile.in that distribute the aux files is the one in
5649 # $config_aux_dir or the top-level Makefile.
5650 my $auxdirdist = is_make_dir ($config_aux_dir) ? $config_aux_dir : '.';
5651 my @new_input_files = ();
5652 while (@input_files)
5653 {
5654 my $in = pop @input_files;
5655 my @ins = split (/:/, $output_files{$in});
5656 if (dirname ($ins[0]) eq $auxdirdist)
5657 {
5658 push @new_input_files, $in;
5659 $automake_will_process_aux_dir = 1;
5660 }
5661 else
5662 {
5663 unshift @new_input_files, $in;
5664 }
5665 }
5666 @input_files = @new_input_files;
5668 # If neither the auxdir/Makefile nor the ./Makefile are generated
5669 # by Automake, we won't distribute the aux files anyway. Assume
5670 # the user know what (s)he does, and pretend we will distribute
5671 # them to disable the error in require_file_internal.
5672 $automake_will_process_aux_dir = 1 if ! is_make_dir ($auxdirdist);
5674 # Look for some files we need. Always check for these. This
5675 # check must be done for every run, even those where we are only
5676 # looking at a subdir Makefile. We must set relative_dir for
5677 # maybe_push_required_file to work.
5678 # Sort the files for stable verbose output.
5679 $relative_dir = '.';
5680 foreach my $file (sort keys %required_aux_file)
5681 {
5682 require_conf_file ($required_aux_file{$file}->get, FOREIGN, $file)
5683 }
5684 err_am "`install.sh' is an anachronism; use `install-sh' instead"
5685 if -f $config_aux_dir . '/install.sh';
5687 # Preserve dist_common for later.
5688 $configure_dist_common = variable_value ('DIST_COMMON') || '';
5690 }
5692 ################################################################
5694 # Set up for Cygnus mode.
5695 sub check_cygnus
5696 {
5697 my $cygnus = option 'cygnus';
5698 return unless $cygnus;
5700 set_strictness ('foreign');
5701 set_option ('no-installinfo', $cygnus);
5702 set_option ('no-dependencies', $cygnus);
5703 set_option ('no-dist', $cygnus);
5705 err_ac "`AM_MAINTAINER_MODE' required when --cygnus specified"
5706 if !$seen_maint_mode;
5707 }
5709 # Do any extra checking for GNU standards.
5710 sub check_gnu_standards
5711 {
5712 if ($relative_dir eq '.')
5713 {
5714 # In top level (or only) directory.
5715 require_file ("$am_file.am", GNU,
5716 qw/INSTALL NEWS README AUTHORS ChangeLog/);
5718 # Accept one of these three licenses; default to COPYING.
5719 # Make sure we do not overwrite an existing license.
5720 my $license;
5721 foreach (qw /COPYING COPYING.LIB COPYING.LESSER/)
5722 {
5723 if (-f $_)
5724 {
5725 $license = $_;
5726 last;
5727 }
5728 }
5729 require_file ("$am_file.am", GNU, 'COPYING')
5730 unless $license;
5731 }
5733 for my $opt ('no-installman', 'no-installinfo')
5734 {
5735 msg ('error-gnu', option $opt,
5736 "option `$opt' disallowed by GNU standards")
5737 if option $opt;
5738 }
5739 }
5741 # Do any extra checking for GNITS standards.
5742 sub check_gnits_standards
5743 {
5744 if ($relative_dir eq '.')
5745 {
5746 # In top level (or only) directory.
5747 require_file ("$am_file.am", GNITS, 'THANKS');
5748 }
5749 }
5751 ################################################################
5752 #
5753 # Functions to handle files of each language.
5755 # Each `lang_X_rewrite($DIRECTORY, $BASE, $EXT)' function follows a
5756 # simple formula: Return value is LANG_SUBDIR if the resulting object
5757 # file should be in a subdir if the source file is, LANG_PROCESS if
5758 # file is to be dealt with, LANG_IGNORE otherwise.
5760 # Much of the actual processing is handled in
5761 # handle_single_transform. These functions exist so that
5762 # auxiliary information can be recorded for a later cleanup pass.
5763 # Note that the calls to these functions are computed, so don't bother
5764 # searching for their precise names in the source.
5766 # This is just a convenience function that can be used to determine
5767 # when a subdir object should be used.
5768 sub lang_sub_obj
5769 {
5770 return option 'subdir-objects' ? LANG_SUBDIR : LANG_PROCESS;
5771 }
5773 # Rewrite a single C source file.
5774 sub lang_c_rewrite
5775 {
5776 my ($directory, $base, $ext, $nonansi_obj, $have_per_exec_flags, $var) = @_;
5778 if (option 'ansi2knr' && $base =~ /_$/)
5779 {
5780 # FIXME: include line number in error.
5781 err_am "C source file `$base.c' would be deleted by ansi2knr rules";
5782 }
5784 my $r = LANG_PROCESS;
5785 if (option 'subdir-objects')
5786 {
5787 $r = LANG_SUBDIR;
5788 if ($directory && $directory ne '.')
5789 {
5790 $base = $directory . '/' . $base;
5792 # libtool is always able to put the object at the proper place,
5793 # so we do not have to require AM_PROG_CC_C_O when building .lo files.
5794 msg_var ('portability', $var,
5795 "compiling `$base.c' in subdir requires "
5796 . "`AM_PROG_CC_C_O' in `$configure_ac'",
5797 uniq_scope => US_GLOBAL,
5798 uniq_part => 'AM_PROG_CC_C_O subdir')
5799 unless $seen_cc_c_o || $nonansi_obj eq '.lo';
5800 }
5802 # In this case we already have the directory information, so
5803 # don't add it again.
5804 $de_ansi_files{$base} = '';
5805 }
5806 else
5807 {
5808 $de_ansi_files{$base} = (($directory eq '.' || $directory eq '')
5809 ? ''
5810 : "$directory/");
5811 }
5813 if (! $seen_cc_c_o
5814 && $have_per_exec_flags
5815 && ! option 'subdir-objects'
5816 && $nonansi_obj ne '.lo')
5817 {
5818 msg_var ('portability',
5819 $var, "compiling `$base.c' with per-target flags requires "
5820 . "`AM_PROG_CC_C_O' in `$configure_ac'",
5821 uniq_scope => US_GLOBAL,
5822 uniq_part => 'AM_PROG_CC_C_O per-target')
5823 }
5825 return $r;
5826 }
5828 # Rewrite a single C++ source file.
5829 sub lang_cxx_rewrite
5830 {
5831 return &lang_sub_obj;
5832 }
5834 # Rewrite a single header file.
5835 sub lang_header_rewrite
5836 {
5837 # Header files are simply ignored.
5838 return LANG_IGNORE;
5839 }
5841 # Rewrite a single Vala source file.
5842 sub lang_vala_rewrite
5843 {
5844 my ($directory, $base, $ext) = @_;
5846 (my $newext = $ext) =~ s/vala$/c/;
5847 return (LANG_SUBDIR, $newext);
5848 }
5850 # Rewrite a single yacc file.
5851 sub lang_yacc_rewrite
5852 {
5853 my ($directory, $base, $ext) = @_;
5855 my $r = &lang_sub_obj;
5856 (my $newext = $ext) =~ tr/y/c/;
5857 return ($r, $newext);
5858 }
5860 # Rewrite a single yacc++ file.
5861 sub lang_yaccxx_rewrite
5862 {
5863 my ($directory, $base, $ext) = @_;
5865 my $r = &lang_sub_obj;
5866 (my $newext = $ext) =~ tr/y/c/;
5867 return ($r, $newext);
5868 }
5870 # Rewrite a single lex file.
5871 sub lang_lex_rewrite
5872 {
5873 my ($directory, $base, $ext) = @_;
5875 my $r = &lang_sub_obj;
5876 (my $newext = $ext) =~ tr/l/c/;
5877 return ($r, $newext);
5878 }
5880 # Rewrite a single lex++ file.
5881 sub lang_lexxx_rewrite
5882 {
5883 my ($directory, $base, $ext) = @_;
5885 my $r = &lang_sub_obj;
5886 (my $newext = $ext) =~ tr/l/c/;
5887 return ($r, $newext);
5888 }
5890 # Rewrite a single assembly file.
5891 sub lang_asm_rewrite
5892 {
5893 return &lang_sub_obj;
5894 }
5896 # Rewrite a single preprocessed assembly file.
5897 sub lang_cppasm_rewrite
5898 {
5899 return &lang_sub_obj;
5900 }
5902 # Rewrite a single Fortran 77 file.
5903 sub lang_f77_rewrite
5904 {
5905 return &lang_sub_obj;
5906 }
5908 # Rewrite a single Fortran file.
5909 sub lang_fc_rewrite
5910 {
5911 return &lang_sub_obj;
5912 }
5914 # Rewrite a single preprocessed Fortran file.
5915 sub lang_ppfc_rewrite
5916 {
5917 return &lang_sub_obj;
5918 }
5920 # Rewrite a single preprocessed Fortran 77 file.
5921 sub lang_ppf77_rewrite
5922 {
5923 return &lang_sub_obj;
5924 }
5926 # Rewrite a single ratfor file.
5927 sub lang_ratfor_rewrite
5928 {
5929 return &lang_sub_obj;
5930 }
5932 # Rewrite a single Objective C file.
5933 sub lang_objc_rewrite
5934 {
5935 return &lang_sub_obj;
5936 }
5938 # Rewrite a single Unified Parallel C file.
5939 sub lang_upc_rewrite
5940 {
5941 return &lang_sub_obj;
5942 }
5944 # Rewrite a single Java file.
5945 sub lang_java_rewrite
5946 {
5947 return LANG_SUBDIR;
5948 }
5950 # The lang_X_finish functions are called after all source file
5951 # processing is done. Each should handle defining rules for the
5952 # language, etc. A finish function is only called if a source file of
5953 # the appropriate type has been seen.
5955 sub lang_c_finish
5956 {
5957 # Push all libobjs files onto de_ansi_files. We actually only
5958 # push files which exist in the current directory, and which are
5959 # genuine source files.
5960 foreach my $file (keys %libsources)
5961 {
5962 if ($file =~ /^(.*)\.[cly]$/ && -f "$relative_dir/$file")
5963 {
5964 $de_ansi_files{$1} = ''
5965 }
5966 }
5968 if (option 'ansi2knr' && keys %de_ansi_files)
5969 {
5970 # Make all _.c files depend on their corresponding .c files.
5971 my @objects;
5972 foreach my $base (sort keys %de_ansi_files)
5973 {
5974 # Each _.c file must depend on ansi2knr; otherwise it
5975 # might be used in a parallel build before it is built.
5976 # We need to support files in the srcdir and in the build
5977 # dir (because these files might be auto-generated. But
5978 # we can't use $< -- some makes only define $< during a
5979 # suffix rule.
5980 my $ansfile = $de_ansi_files{$base} . $base . '.c';
5981 $output_rules .= ($base . "_.c: $ansfile \$(ANSI2KNR)\n\t"
5982 . '$(CPP) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS) $(CPPFLAGS) '
5983 . '`if test -f $(srcdir)/' . $ansfile
5984 . '; then echo $(srcdir)/' . $ansfile
5985 . '; else echo ' . $ansfile . '; fi` '
5986 . "| sed 's/^# \\([0-9]\\)/#line \\1/' "
5987 . '| $(ANSI2KNR) > $@'
5988 # If ansi2knr fails then we shouldn't
5989 # create the _.c file
5990 . " || rm -f \$\@\n");
5991 push (@objects, $base . '_.$(OBJEXT)');
5992 push (@objects, $base . '_.lo')
5993 if var ('LIBTOOL');
5995 # Explicitly clean the _.c files if they are in a
5996 # subdirectory. (In the current directory they get erased
5997 # by a `rm -f *_.c' rule.)
5998 $clean_files{$base . '_.c'} = MOSTLY_CLEAN
5999 if dirname ($base) ne '.';
6000 }
6002 # Make all _.o (and _.lo) files depend on ansi2knr.
6003 # Use a sneaky little hack to make it print nicely.
6004 &pretty_print_rule ('', '', @objects, ':', '$(ANSI2KNR)');
6005 }
6006 }
6008 sub lang_vala_finish_target ($$)
6009 {
6010 my ($self, $name) = @_;
6012 my $derived = canonicalize ($name);
6013 my $varname = $derived . '_SOURCES';
6014 my $var = var ($varname);
6016 if ($var)
6017 {
6018 foreach my $file ($var->value_as_list_recursive)
6019 {
6020 $output_rules .= "\$(srcdir)/$file: \$(srcdir)/${derived}_vala.stamp\n"
6021 . "\t\@if test -f \$@; then :; else rm -f \$(srcdir)/${derived}_vala.stamp; fi\n"
6022 . "\t\@if test -f \$@; then :; else \\\n"
6023 . "\t \$(am__cd) \$(srcdir) && \$(MAKE) \$(AM_MAKEFLAGS) ${derived}_vala.stamp; \\\n"
6024 . "\tfi\n"
6025 if $file =~ s/(.*)\.vala$/$1.c/;
6026 }
6027 }
6029 # Add rebuild rules for generated header and vapi files
6030 my $flags = var ($derived . '_VALAFLAGS');
6031 if ($flags)
6032 {
6033 my $lastflag = '';
6034 foreach my $flag ($flags->value_as_list_recursive)
6035 {
6036 if (grep (/$lastflag/, ('-H', '-h', '--header', '--internal-header',
6037 '--vapi', '--internal-vapi', '--gir')))
6038 {
6039 my $headerfile = $flag;
6040 $output_rules .= "\$(srcdir)/$headerfile: \$(srcdir)/${derived}_vala.stamp\n"
6041 . "\t\@if test -f \$@; then :; else rm -f \$(srcdir)/${derived}_vala.stamp; fi\n"
6042 . "\t\@if test -f \$@; then :; else \\\n"
6043 . "\t \$(am__cd) \$(srcdir) && \$(MAKE) \$(AM_MAKEFLAGS) ${derived}_vala.stamp; \\\n"
6044 . "\tfi\n";
6046 # valac is not used when building from dist tarballs
6047 # distribute the generated files
6048 push_dist_common ($headerfile);
6049 $clean_files{$headerfile} = MAINTAINER_CLEAN;
6050 }
6051 $lastflag = $flag;
6052 }
6053 }
6055 my $compile = $self->compile;
6057 # Rewrite each occurrence of `AM_VALAFLAGS' in the compile
6058 # rule into `${derived}_VALAFLAGS' if it exists.
6059 my $val = "${derived}_VALAFLAGS";
6060 $compile =~ s/\(AM_VALAFLAGS\)/\($val\)/
6061 if set_seen ($val);
6063 # VALAFLAGS is a user variable (per GNU Standards),
6064 # it should not be overridden in the Makefile...
6065 check_user_variables ['VALAFLAGS'];
6067 my $dirname = dirname ($name);
6069 # Only generate C code, do not run C compiler
6070 $compile .= " -C";
6072 my $verbose = verbose_flag ('VALAC');
6073 my $silent = silent_flag ();
6075 $output_rules .=
6076 "${derived}_vala.stamp: \$(${derived}_SOURCES)\n".
6077 "\t${verbose}${compile} \$(${derived}_SOURCES)\n".
6078 "\t${silent}touch \$@\n";
6080 push_dist_common ("${derived}_vala.stamp");
6082 $clean_files{"${derived}_vala.stamp"} = MAINTAINER_CLEAN;
6083 }
6085 # Add output rules to invoke valac and create stamp file as a witness
6086 # to handle multiple outputs. This function is called after all source
6087 # file processing is done.
6088 sub lang_vala_finish
6089 {
6090 my ($self) = @_;
6092 foreach my $prog (keys %known_programs)
6093 {
6094 lang_vala_finish_target ($self, $prog);
6095 }
6097 while (my ($name) = each %known_libraries)
6098 {
6099 lang_vala_finish_target ($self, $name);
6100 }
6101 }
6103 # The built .c files should be cleaned only on maintainer-clean
6104 # as the .c files are distributed. This function is called for each
6105 # .vala source file.
6106 sub lang_vala_target_hook
6107 {
6108 my ($self, $aggregate, $output, $input, %transform) = @_;
6110 $clean_files{$output} = MAINTAINER_CLEAN;
6111 }
6113 # This is a yacc helper which is called whenever we have decided to
6114 # compile a yacc file.
6115 sub lang_yacc_target_hook
6116 {
6117 my ($self, $aggregate, $output, $input, %transform) = @_;
6119 my $flag = $aggregate . "_YFLAGS";
6120 my $flagvar = var $flag;
6121 my $YFLAGSvar = var 'YFLAGS';
6122 if (($flagvar && $flagvar->variable_value =~ /$DASH_D_PATTERN/o)
6123 || ($YFLAGSvar && $YFLAGSvar->variable_value =~ /$DASH_D_PATTERN/o))
6124 {
6125 (my $output_base = $output) =~ s/$KNOWN_EXTENSIONS_PATTERN$//;
6126 my $header = $output_base . '.h';
6128 # Found a `-d' that applies to the compilation of this file.
6129 # Add a dependency for the generated header file, and arrange
6130 # for that file to be included in the distribution.
6131 foreach my $cond (Automake::Rule::define (${header}, 'internal',
6132 RULE_AUTOMAKE, TRUE,
6133 INTERNAL))
6134 {
6135 my $condstr = $cond->subst_string;
6136 $output_rules .=
6137 "$condstr${header}: $output\n"
6138 # Recover from removal of $header
6139 . "$condstr\t\@if test ! -f \$@; then rm -f $output; else :; fi\n"
6140 . "$condstr\t\@if test ! -f \$@; then \$(MAKE) \$(AM_MAKEFLAGS) $output; else :; fi\n";
6141 }
6142 # Distribute the generated file, unless its .y source was
6143 # listed in a nodist_ variable. (&handle_source_transform
6144 # will set DIST_SOURCE.)
6145 &push_dist_common ($header)
6146 if $transform{'DIST_SOURCE'};
6148 # If the files are built in the build directory, then we want
6149 # to remove them with `make clean'. If they are in srcdir
6150 # they shouldn't be touched. However, we can't determine this
6151 # statically, and the GNU rules say that yacc/lex output files
6152 # should be removed by maintainer-clean. So that's what we
6153 # do.
6154 $clean_files{$header} = MAINTAINER_CLEAN;
6155 }
6156 # Erase $OUTPUT on `make maintainer-clean' (by GNU standards).
6157 # See the comment above for $HEADER.
6158 $clean_files{$output} = MAINTAINER_CLEAN;
6159 }
6161 # This is a lex helper which is called whenever we have decided to
6162 # compile a lex file.
6163 sub lang_lex_target_hook
6164 {
6165 my ($self, $aggregate, $output, $input) = @_;
6166 # If the files are built in the build directory, then we want to
6167 # remove them with `make clean'. If they are in srcdir they
6168 # shouldn't be touched. However, we can't determine this
6169 # statically, and the GNU rules say that yacc/lex output files
6170 # should be removed by maintainer-clean. So that's what we do.
6171 $clean_files{$output} = MAINTAINER_CLEAN;
6172 }
6174 # This is a helper for both lex and yacc.
6175 sub yacc_lex_finish_helper
6176 {
6177 return if defined $language_scratch{'lex-yacc-done'};
6178 $language_scratch{'lex-yacc-done'} = 1;
6180 # FIXME: for now, no line number.
6181 require_conf_file ($configure_ac, FOREIGN, 'ylwrap');
6182 &define_variable ('YLWRAP', "$am_config_aux_dir/ylwrap", INTERNAL);
6183 }
6185 sub lang_yacc_finish
6186 {
6187 return if defined $language_scratch{'yacc-done'};
6188 $language_scratch{'yacc-done'} = 1;
6190 reject_var 'YACCFLAGS', "`YACCFLAGS' obsolete; use `YFLAGS' instead";
6192 yacc_lex_finish_helper;
6193 }
6196 sub lang_lex_finish
6197 {
6198 return if defined $language_scratch{'lex-done'};
6199 $language_scratch{'lex-done'} = 1;
6201 yacc_lex_finish_helper;
6202 }
6205 # Given a hash table of linker names, pick the name that has the most
6206 # precedence. This is lame, but something has to have global
6207 # knowledge in order to eliminate the conflict. Add more linkers as
6208 # required.
6209 sub resolve_linker
6210 {
6211 my (%linkers) = @_;
6213 foreach my $l (qw(GCJLINK CXXLINK F77LINK FCLINK OBJCLINK UPCLINK))
6214 {
6215 return $l if defined $linkers{$l};
6216 }
6217 return 'LINK';
6218 }
6220 # Called to indicate that an extension was used.
6221 sub saw_extension
6222 {
6223 my ($ext) = @_;
6224 if (! defined $extension_seen{$ext})
6225 {
6226 $extension_seen{$ext} = 1;
6227 }
6228 else
6229 {
6230 ++$extension_seen{$ext};
6231 }
6232 }
6234 # Return the number of files seen for a given language. Knows about
6235 # special cases we care about. FIXME: this is hideous. We need
6236 # something that involves real language objects. For instance yacc
6237 # and yaccxx could both derive from a common yacc class which would
6238 # know about the strange ylwrap requirement. (Or better yet we could
6239 # just not support legacy yacc!)
6240 sub count_files_for_language
6241 {
6242 my ($name) = @_;
6244 my @names;
6245 if ($name eq 'yacc' || $name eq 'yaccxx')
6246 {
6247 @names = ('yacc', 'yaccxx');
6248 }
6249 elsif ($name eq 'lex' || $name eq 'lexxx')
6250 {
6251 @names = ('lex', 'lexxx');
6252 }
6253 else
6254 {
6255 @names = ($name);
6256 }
6258 my $r = 0;
6259 foreach $name (@names)
6260 {
6261 my $lang = $languages{$name};
6262 foreach my $ext (@{$lang->extensions})
6263 {
6264 $r += $extension_seen{$ext}
6265 if defined $extension_seen{$ext};
6266 }
6267 }
6269 return $r
6270 }
6272 # Called to ask whether source files have been seen . If HEADERS is 1,
6273 # headers can be included.
6274 sub saw_sources_p
6275 {
6276 my ($headers) = @_;
6278 # count all the sources
6279 my $count = 0;
6280 foreach my $val (values %extension_seen)
6281 {
6282 $count += $val;
6283 }
6285 if (!$headers)
6286 {
6287 $count -= count_files_for_language ('header');
6288 }
6290 return $count > 0;
6291 }
6294 # register_language (%ATTRIBUTE)
6295 # ------------------------------
6296 # Register a single language.
6297 # Each %ATTRIBUTE is of the form ATTRIBUTE => VALUE.
6298 sub register_language (%)
6299 {
6300 my (%option) = @_;
6302 # Set the defaults.
6303 $option{'ansi'} = 0
6304 unless defined $option{'ansi'};
6305 $option{'autodep'} = 'no'
6306 unless defined $option{'autodep'};
6307 $option{'linker'} = ''
6308 unless defined $option{'linker'};
6309 $option{'flags'} = []
6310 unless defined $option{'flags'};
6311 $option{'output_extensions'} = sub { return ( '.$(OBJEXT)', '.lo' ) }
6312 unless defined $option{'output_extensions'};
6313 $option{'nodist_specific'} = 0
6314 unless defined $option{'nodist_specific'};
6316 my $lang = new Language (%option);
6318 # Fill indexes.
6319 $extension_map{$_} = $lang->name foreach @{$lang->extensions};
6320 $languages{$lang->name} = $lang;
6321 my $link = $lang->linker;
6322 if ($link)
6323 {
6324 if (exists $link_languages{$link})
6325 {
6326 prog_error ("`$link' has different definitions in "
6327 . $lang->name . " and " . $link_languages{$link}->name)
6328 if $lang->link ne $link_languages{$link}->link;
6329 }
6330 else
6331 {
6332 $link_languages{$link} = $lang;
6333 }
6334 }
6336 # Update the pattern of known extensions.
6337 accept_extensions (@{$lang->extensions});
6339 # Upate the $suffix_rule map.
6340 foreach my $suffix (@{$lang->extensions})
6341 {
6342 foreach my $dest (&{$lang->output_extensions} ($suffix))
6343 {
6344 register_suffix_rule (INTERNAL, $suffix, $dest);
6345 }
6346 }
6347 }
6349 # derive_suffix ($EXT, $OBJ)
6350 # --------------------------
6351 # This function is used to find a path from a user-specified suffix $EXT
6352 # to $OBJ or to some other suffix we recognize internally, e.g. `cc'.
6353 sub derive_suffix ($$)
6354 {
6355 my ($source_ext, $obj) = @_;
6357 while (! $extension_map{$source_ext}
6358 && $source_ext ne $obj
6359 && exists $suffix_rules->{$source_ext}
6360 && exists $suffix_rules->{$source_ext}{$obj})
6361 {
6362 $source_ext = $suffix_rules->{$source_ext}{$obj}[0];
6363 }
6365 return $source_ext;
6366 }
6369 ################################################################
6371 # Pretty-print something and append to output_rules.
6372 sub pretty_print_rule
6373 {
6374 $output_rules .= &makefile_wrap (@_);
6375 }
6378 ################################################################
6381 ## -------------------------------- ##
6382 ## Handling the conditional stack. ##
6383 ## -------------------------------- ##
6386 # $STRING
6387 # make_conditional_string ($NEGATE, $COND)
6388 # ----------------------------------------
6389 sub make_conditional_string ($$)
6390 {
6391 my ($negate, $cond) = @_;
6392 $cond = "${cond}_TRUE"
6393 unless $cond =~ /^TRUE|FALSE$/;
6394 $cond = Automake::Condition::conditional_negate ($cond)
6395 if $negate;
6396 return $cond;
6397 }
6400 my %_am_macro_for_cond =
6401 (
6402 AMDEP => "one of the compiler tests\n"
6403 . " AC_PROG_CC, AC_PROG_CXX, AC_PROG_CXX, AC_PROG_OBJC,\n"
6404 . " AM_PROG_AS, AM_PROG_GCJ, AM_PROG_UPC",
6405 am__fastdepCC => 'AC_PROG_CC',
6406 am__fastdepCCAS => 'AM_PROG_AS',
6407 am__fastdepCXX => 'AC_PROG_CXX',
6408 am__fastdepGCJ => 'AM_PROG_GCJ',
6409 am__fastdepOBJC => 'AC_PROG_OBJC',
6410 am__fastdepUPC => 'AM_PROG_UPC'
6411 );
6413 # $COND
6414 # cond_stack_if ($NEGATE, $COND, $WHERE)
6415 # --------------------------------------
6416 sub cond_stack_if ($$$)
6417 {
6418 my ($negate, $cond, $where) = @_;
6420 if (! $configure_cond{$cond} && $cond !~ /^TRUE|FALSE$/)
6421 {
6422 my $text = "$cond does not appear in AM_CONDITIONAL";
6423 my $scope = US_LOCAL;
6424 if (exists $_am_macro_for_cond{$cond})
6425 {
6426 my $mac = $_am_macro_for_cond{$cond};
6427 $text .= "\n The usual way to define `$cond' is to add ";
6428 $text .= ($mac =~ / /) ? $mac : "`$mac'";
6429 $text .= "\n to `$configure_ac' and run `aclocal' and `autoconf' again.";
6430 # These warnings appear in Automake files (depend2.am),
6431 # so there is no need to display them more than once:
6432 $scope = US_GLOBAL;
6433 }
6434 error $where, $text, uniq_scope => $scope;
6435 }
6437 push (@cond_stack, make_conditional_string ($negate, $cond));
6439 return new Automake::Condition (@cond_stack);
6440 }
6443 # $COND
6444 # cond_stack_else ($NEGATE, $COND, $WHERE)
6445 # ----------------------------------------
6446 sub cond_stack_else ($$$)
6447 {
6448 my ($negate, $cond, $where) = @_;
6450 if (! @cond_stack)
6451 {
6452 error $where, "else without if";
6453 return FALSE;
6454 }
6456 $cond_stack[$#cond_stack] =
6457 Automake::Condition::conditional_negate ($cond_stack[$#cond_stack]);
6459 # If $COND is given, check against it.
6460 if (defined $cond)
6461 {
6462 $cond = make_conditional_string ($negate, $cond);
6464 error ($where, "else reminder ($negate$cond) incompatible with "
6465 . "current conditional: $cond_stack[$#cond_stack]")
6466 if $cond_stack[$#cond_stack] ne $cond;
6467 }
6469 return new Automake::Condition (@cond_stack);
6470 }
6473 # $COND
6474 # cond_stack_endif ($NEGATE, $COND, $WHERE)
6475 # -----------------------------------------
6476 sub cond_stack_endif ($$$)
6477 {
6478 my ($negate, $cond, $where) = @_;
6479 my $old_cond;
6481 if (! @cond_stack)
6482 {
6483 error $where, "endif without if";
6484 return TRUE;
6485 }
6487 # If $COND is given, check against it.
6488 if (defined $cond)
6489 {
6490 $cond = make_conditional_string ($negate, $cond);
6492 error ($where, "endif reminder ($negate$cond) incompatible with "
6493 . "current conditional: $cond_stack[$#cond_stack]")
6494 if $cond_stack[$#cond_stack] ne $cond;
6495 }
6497 pop @cond_stack;
6499 return new Automake::Condition (@cond_stack);
6500 }
6506 ## ------------------------ ##
6507 ## Handling the variables. ##
6508 ## ------------------------ ##
6511 # &define_pretty_variable ($VAR, $COND, $WHERE, @VALUE)
6512 # -----------------------------------------------------
6513 # Like define_variable, but the value is a list, and the variable may
6514 # be defined conditionally. The second argument is the condition
6515 # under which the value should be defined; this should be the empty
6516 # string to define the variable unconditionally. The third argument
6517 # is a list holding the values to use for the variable. The value is
6518 # pretty printed in the output file.
6519 sub define_pretty_variable ($$$@)
6520 {
6521 my ($var, $cond, $where, @value) = @_;
6523 if (! vardef ($var, $cond))
6524 {
6525 Automake::Variable::define ($var, VAR_AUTOMAKE, '', $cond, "@value",
6526 '', $where, VAR_PRETTY);
6527 rvar ($var)->rdef ($cond)->set_seen;
6528 }
6529 }
6532 # define_variable ($VAR, $VALUE, $WHERE)
6533 # --------------------------------------
6534 # Define a new Automake Makefile variable VAR to VALUE, but only if
6535 # not already defined.
6536 sub define_variable ($$$)
6537 {
6538 my ($var, $value, $where) = @_;
6539 define_pretty_variable ($var, TRUE, $where, $value);
6540 }
6543 # define_files_variable ($VAR, \@BASENAME, $EXTENSION, $WHERE)
6544 # ------------------------------------------------------------
6545 # Define the $VAR which content is the list of file names composed of
6546 # a @BASENAME and the $EXTENSION.
6547 sub define_files_variable ($\@$$)
6548 {
6549 my ($var, $basename, $extension, $where) = @_;
6550 define_variable ($var,
6551 join (' ', map { "$_.$extension" } @$basename),
6552 $where);
6553 }
6556 # Like define_variable, but define a variable to be the configure
6557 # substitution by the same name.
6558 sub define_configure_variable ($)
6559 {
6560 my ($var) = @_;
6562 my $pretty = VAR_ASIS;
6563 my $owner = VAR_CONFIGURE;
6565 # Some variables we do not want to output. For instance it
6566 # would be a bad idea to output `U = @U@` when `@U@` can be
6567 # substituted as `\`.
6568 $pretty = VAR_SILENT if exists $ignored_configure_vars{$var};
6570 # ANSI2KNR is a variable that Automake wants to redefine, so
6571 # it must be owned by Automake. (It is also used as a proof
6572 # that AM_C_PROTOTYPES has been run, that's why we do not simply
6573 # omit the AC_SUBST.)
6574 $owner = VAR_AUTOMAKE if $var eq 'ANSI2KNR';
6576 Automake::Variable::define ($var, $owner, '', TRUE, subst $var,
6577 '', $configure_vars{$var}, $pretty);
6578 }
6581 # define_compiler_variable ($LANG)
6582 # --------------------------------
6583 # Define a compiler variable. We also handle defining the `LT'
6584 # version of the command when using libtool.
6585 sub define_compiler_variable ($)
6586 {
6587 my ($lang) = @_;
6589 my ($var, $value) = ($lang->compiler, $lang->compile);
6590 my $libtool_tag = '';
6591 $libtool_tag = '--tag=' . $lang->libtool_tag . ' '
6592 if $lang->libtool_tag && exists $libtool_tags{$lang->libtool_tag};
6593 &define_variable ($var, $value, INTERNAL);
6594 if (var ('LIBTOOL'))
6595 {
6596 my $verbose = define_verbose_libtool ();
6597 &define_variable ("LT$var",
6598 "\$(LIBTOOL) $verbose $libtool_tag\$(AM_LIBTOOLFLAGS) "
6599 . "\$(LIBTOOLFLAGS) --mode=compile $value",
6600 INTERNAL);
6601 }
6602 define_verbose_tagvar ($lang->ccer || 'GEN');
6603 }
6606 # define_linker_variable ($LANG)
6607 # ------------------------------
6608 # Define linker variables.
6609 sub define_linker_variable ($)
6610 {
6611 my ($lang) = @_;
6613 my $libtool_tag = '';
6614 $libtool_tag = '--tag=' . $lang->libtool_tag . ' '
6615 if $lang->libtool_tag && exists $libtool_tags{$lang->libtool_tag};
6616 # CCLD = $(CC).
6617 &define_variable ($lang->lder, $lang->ld, INTERNAL);
6618 # CCLINK = $(CCLD) blah blah...
6619 my $link = '';
6620 if (var ('LIBTOOL'))
6621 {
6622 my $verbose = define_verbose_libtool ();
6623 $link = "\$(LIBTOOL) $verbose $libtool_tag\$(AM_LIBTOOLFLAGS) "
6624 . "\$(LIBTOOLFLAGS) --mode=link ";
6625 }
6626 &define_variable ($lang->linker, $link . $lang->link, INTERNAL);
6627 &define_variable ($lang->compiler, $lang);
6628 &define_verbose_tagvar ($lang->lder || 'GEN');
6629 }
6631 sub define_per_target_linker_variable ($$)
6632 {
6633 my ($linker, $target) = @_;
6635 # If the user wrote a custom link command, we don't define ours.
6636 return "${target}_LINK"
6637 if set_seen "${target}_LINK";
6639 my $xlink = $linker ? $linker : 'LINK';
6641 my $lang = $link_languages{$xlink};
6642 prog_error "Unknown language for linker variable `$xlink'"
6643 unless $lang;
6645 my $link_command = $lang->link;
6646 if (var 'LIBTOOL')
6647 {
6648 my $libtool_tag = '';
6649 $libtool_tag = '--tag=' . $lang->libtool_tag . ' '
6650 if $lang->libtool_tag && exists $libtool_tags{$lang->libtool_tag};
6652 my $verbose = define_verbose_libtool ();
6653 $link_command =
6654 "\$(LIBTOOL) $verbose $libtool_tag\$(AM_LIBTOOLFLAGS) \$(LIBTOOLFLAGS) "
6655 . "--mode=link " . $link_command;
6656 }
6658 # Rewrite each occurrence of `AM_$flag' in the link
6659 # command into `${derived}_$flag' if it exists.
6660 my $orig_command = $link_command;
6661 my @flags = (@{$lang->flags}, 'LDFLAGS');
6662 push @flags, 'LIBTOOLFLAGS' if var 'LIBTOOL';
6663 for my $flag (@flags)
6664 {
6665 my $val = "${target}_$flag";
6666 $link_command =~ s/\(AM_$flag\)/\($val\)/
6667 if set_seen ($val);
6668 }
6670 # If the computed command is the same as the generic command, use
6671 # the command linker variable.
6672 return ($lang->linker, $lang->lder)
6673 if $link_command eq $orig_command;
6675 &define_variable ("${target}_LINK", $link_command, INTERNAL);
6676 return ("${target}_LINK", $lang->lder);
6677 }
6679 ################################################################
6681 # &check_trailing_slash ($WHERE, $LINE)
6682 # -------------------------------------
6683 # Return 1 iff $LINE ends with a slash.
6684 # Might modify $LINE.
6685 sub check_trailing_slash ($\$)
6686 {
6687 my ($where, $line) = @_;
6689 # Ignore `##' lines.
6690 return 0 if $$line =~ /$IGNORE_PATTERN/o;
6692 # Catch and fix a common error.
6693 msg "syntax", $where, "whitespace following trailing backslash"
6694 if $$line =~ s/\\\s+\n$/\\\n/;
6696 return $$line =~ /\\$/;
6697 }
6700 # &read_am_file ($AMFILE, $WHERE)
6701 # -------------------------------
6702 # Read Makefile.am and set up %contents. Simultaneously copy lines
6703 # from Makefile.am into $output_trailer, or define variables as
6704 # appropriate. NOTE we put rules in the trailer section. We want
6705 # user rules to come after our generated stuff.
6706 sub read_am_file ($$)
6707 {
6708 my ($amfile, $where) = @_;
6710 my $am_file = new Automake::XFile ("< $amfile");
6711 verb "reading $amfile";
6713 # Keep track of the youngest output dependency.
6714 my $mtime = mtime $amfile;
6715 $output_deps_greatest_timestamp = $mtime
6716 if $mtime > $output_deps_greatest_timestamp;
6718 my $spacing = '';
6719 my $comment = '';
6720 my $blank = 0;
6721 my $saw_bk = 0;
6722 my $var_look = VAR_ASIS;
6724 use constant IN_VAR_DEF => 0;
6725 use constant IN_RULE_DEF => 1;
6726 use constant IN_COMMENT => 2;
6727 my $prev_state = IN_RULE_DEF;
6729 while ($_ = $am_file->getline)
6730 {
6731 $where->set ("$amfile:$.");
6732 if (/$IGNORE_PATTERN/o)
6733 {
6734 # Merely delete comments beginning with two hashes.
6735 }
6736 elsif (/$WHITE_PATTERN/o)
6737 {
6738 error $where, "blank line following trailing backslash"
6739 if $saw_bk;
6740 # Stick a single white line before the incoming macro or rule.
6741 $spacing = "\n";
6742 $blank = 1;
6743 # Flush all comments seen so far.
6744 if ($comment ne '')
6745 {
6746 $output_vars .= $comment;
6747 $comment = '';
6748 }
6749 }
6750 elsif (/$COMMENT_PATTERN/o)
6751 {
6752 # Stick comments before the incoming macro or rule. Make
6753 # sure a blank line precedes the first block of comments.
6754 $spacing = "\n" unless $blank;
6755 $blank = 1;
6756 $comment .= $spacing . $_;
6757 $spacing = '';
6758 $prev_state = IN_COMMENT;
6759 }
6760 else
6761 {
6762 last;
6763 }
6764 $saw_bk = check_trailing_slash ($where, $_);
6765 }
6767 # We save the conditional stack on entry, and then check to make
6768 # sure it is the same on exit. This lets us conditionally include
6769 # other files.
6770 my @saved_cond_stack = @cond_stack;
6771 my $cond = new Automake::Condition (@cond_stack);
6773 my $last_var_name = '';
6774 my $last_var_type = '';
6775 my $last_var_value = '';
6776 my $last_where;
6777 # FIXME: shouldn't use $_ in this loop; it is too big.
6778 while ($_)
6779 {
6780 $where->set ("$amfile:$.");
6782 # Make sure the line is \n-terminated.
6783 chomp;
6784 $_ .= "\n";
6786 # Don't look at MAINTAINER_MODE_TRUE here. That shouldn't be
6787 # used by users. @MAINT@ is an anachronism now.
6788 $_ =~ s/\@MAINT\@//g
6789 unless $seen_maint_mode;
6791 my $new_saw_bk = check_trailing_slash ($where, $_);
6793 if (/$IGNORE_PATTERN/o)
6794 {
6795 # Merely delete comments beginning with two hashes.
6797 # Keep any backslash from the previous line.
6798 $new_saw_bk = $saw_bk;
6799 }
6800 elsif (/$WHITE_PATTERN/o)
6801 {
6802 # Stick a single white line before the incoming macro or rule.
6803 $spacing = "\n";
6804 error $where, "blank line following trailing backslash"
6805 if $saw_bk;
6806 }
6807 elsif (/$COMMENT_PATTERN/o)
6808 {
6809 error $where, "comment following trailing backslash"
6810 if $saw_bk && $prev_state != IN_COMMENT;
6812 # Stick comments before the incoming macro or rule.
6813 $comment .= $spacing . $_;
6814 $spacing = '';
6815 $prev_state = IN_COMMENT;
6816 }
6817 elsif ($saw_bk)
6818 {
6819 if ($prev_state == IN_RULE_DEF)
6820 {
6821 my $cond = new Automake::Condition @cond_stack;
6822 $output_trailer .= $cond->subst_string;
6823 $output_trailer .= $_;
6824 }
6825 elsif ($prev_state == IN_COMMENT)
6826 {
6827 # If the line doesn't start with a `#', add it.
6828 # We do this because a continued comment like
6829 # # A = foo \
6830 # bar \
6831 # baz
6832 # is not portable. BSD make doesn't honor
6833 # escaped newlines in comments.
6834 s/^#?/#/;
6835 $comment .= $spacing . $_;
6836 }
6837 else # $prev_state == IN_VAR_DEF
6838 {
6839 $last_var_value .= ' '
6840 unless $last_var_value =~ /\s$/;
6841 $last_var_value .= $_;
6843 if (!/\\$/)
6844 {
6845 Automake::Variable::define ($last_var_name, VAR_MAKEFILE,
6846 $last_var_type, $cond,
6847 $last_var_value, $comment,
6848 $last_where, VAR_ASIS)
6849 if $cond != FALSE;
6850 $comment = $spacing = '';
6851 }
6852 }
6853 }
6855 elsif (/$IF_PATTERN/o)
6856 {
6857 $cond = cond_stack_if ($1, $2, $where);
6858 }
6859 elsif (/$ELSE_PATTERN/o)
6860 {
6861 $cond = cond_stack_else ($1, $2, $where);
6862 }
6863 elsif (/$ENDIF_PATTERN/o)
6864 {
6865 $cond = cond_stack_endif ($1, $2, $where);
6866 }
6868 elsif (/$RULE_PATTERN/o)
6869 {
6870 # Found a rule.
6871 $prev_state = IN_RULE_DEF;
6873 # For now we have to output all definitions of user rules
6874 # and can't diagnose duplicates (see the comment in
6875 # Automake::Rule::define). So we go on and ignore the return value.
6876 Automake::Rule::define ($1, $amfile, RULE_USER, $cond, $where);
6878 check_variable_expansions ($_, $where);
6880 $output_trailer .= $comment . $spacing;
6881 my $cond = new Automake::Condition @cond_stack;
6882 $output_trailer .= $cond->subst_string;
6883 $output_trailer .= $_;
6884 $comment = $spacing = '';
6885 }
6886 elsif (/$ASSIGNMENT_PATTERN/o)
6887 {
6888 # Found a macro definition.
6889 $prev_state = IN_VAR_DEF;
6890 $last_var_name = $1;
6891 $last_var_type = $2;
6892 $last_var_value = $3;
6893 $last_where = $where->clone;
6894 if ($3 ne '' && substr ($3, -1) eq "\\")
6895 {
6896 # We preserve the `\' because otherwise the long lines
6897 # that are generated will be truncated by broken
6898 # `sed's.
6899 $last_var_value = $3 . "\n";
6900 }
6901 # Normally we try to output variable definitions in the
6902 # same format they were input. However, POSIX compliant
6903 # systems are not required to support lines longer than
6904 # 2048 bytes (most notably, some sed implementation are
6905 # limited to 4000 bytes, and sed is used by config.status
6906 # to rewrite Makefile.in into Makefile). Moreover nobody
6907 # would really write such long lines by hand since it is
6908 # hardly maintainable. So if a line is longer that 1000
6909 # bytes (an arbitrary limit), assume it has been
6910 # automatically generated by some tools, and flatten the
6911 # variable definition. Otherwise, keep the variable as it
6912 # as been input.
6913 $var_look = VAR_PRETTY if length ($last_var_value) >= 1000;
6915 if (!/\\$/)
6916 {
6917 Automake::Variable::define ($last_var_name, VAR_MAKEFILE,
6918 $last_var_type, $cond,
6919 $last_var_value, $comment,
6920 $last_where, $var_look)
6921 if $cond != FALSE;
6922 $comment = $spacing = '';
6923 $var_look = VAR_ASIS;
6924 }
6925 }
6926 elsif (/$INCLUDE_PATTERN/o)
6927 {
6928 my $path = $1;
6930 if ($path =~ s/^\$\(top_srcdir\)\///)
6931 {
6932 push (@include_stack, "\$\(top_srcdir\)/$path");
6933 # Distribute any included file.
6935 # Always use the $(top_srcdir) prefix in DIST_COMMON,
6936 # otherwise OSF make will implicitly copy the included
6937 # file in the build tree during `make distdir' to satisfy
6938 # the dependency.
6939 # (subdircond2.test and subdircond3.test will fail.)
6940 push_dist_common ("\$\(top_srcdir\)/$path");
6941 }
6942 else
6943 {
6944 $path =~ s/\$\(srcdir\)\///;
6945 push (@include_stack, "\$\(srcdir\)/$path");
6946 # Always use the $(srcdir) prefix in DIST_COMMON,
6947 # otherwise OSF make will implicitly copy the included
6948 # file in the build tree during `make distdir' to satisfy
6949 # the dependency.
6950 # (subdircond2.test and subdircond3.test will fail.)
6951 push_dist_common ("\$\(srcdir\)/$path");
6952 $path = $relative_dir . "/" . $path if $relative_dir ne '.';
6953 }
6954 $where->push_context ("`$path' included from here");
6955 &read_am_file ($path, $where);
6956 $where->pop_context;
6957 }
6958 else
6959 {
6960 # This isn't an error; it is probably a continued rule.
6961 # In fact, this is what we assume.
6962 $prev_state = IN_RULE_DEF;
6963 check_variable_expansions ($_, $where);
6964 $output_trailer .= $comment . $spacing;
6965 my $cond = new Automake::Condition @cond_stack;
6966 $output_trailer .= $cond->subst_string;
6967 $output_trailer .= $_;
6968 $comment = $spacing = '';
6969 error $where, "`#' comment at start of rule is unportable"
6970 if $_ =~ /^\t\s*\#/;
6971 }
6973 $saw_bk = $new_saw_bk;
6974 $_ = $am_file->getline;
6975 }
6977 $output_trailer .= $comment;
6979 error ($where, "trailing backslash on last line")
6980 if $saw_bk;
6982 error ($where, (@cond_stack ? "unterminated conditionals: @cond_stack"
6983 : "too many conditionals closed in include file"))
6984 if "@saved_cond_stack" ne "@cond_stack";
6985 }
6988 # define_standard_variables ()
6989 # ----------------------------
6990 # A helper for read_main_am_file which initializes configure variables
6991 # and variables from header-vars.am.
6992 sub define_standard_variables
6993 {
6994 my $saved_output_vars = $output_vars;
6995 my ($comments, undef, $rules) =
6996 file_contents_internal (1, "$libdir/am/header-vars.am",
6997 new Automake::Location);
6999 foreach my $var (sort keys %configure_vars)
7000 {
7001 &define_configure_variable ($var);
7002 }
7004 $output_vars .= $comments . $rules;
7005 }
7007 # Read main am file.
7008 sub read_main_am_file
7009 {
7010 my ($amfile) = @_;
7012 # This supports the strange variable tricks we are about to play.
7013 prog_error ("variable defined before read_main_am_file\n" . variables_dump ())
7014 if (scalar (variables) > 0);
7016 # Generate copyright header for generated Makefile.in.
7017 # We do discard the output of predefined variables, handled below.
7018 $output_vars = ("# $in_file_name generated by automake "
7019 . $VERSION . " from $am_file_name.\n");
7020 $output_vars .= '# ' . subst ('configure_input') . "\n";
7021 $output_vars .= $gen_copyright;
7023 # We want to predefine as many variables as possible. This lets
7024 # the user set them with `+=' in Makefile.am.
7025 &define_standard_variables;
7027 # Read user file, which might override some of our values.
7028 &read_am_file ($amfile, new Automake::Location);
7029 }
7033 ################################################################
7035 # $FLATTENED
7036 # &flatten ($STRING)
7037 # ------------------
7038 # Flatten the $STRING and return the result.
7039 sub flatten
7040 {
7041 $_ = shift;
7043 s/\\\n//somg;
7044 s/\s+/ /g;
7045 s/^ //;
7046 s/ $//;
7048 return $_;
7049 }
7052 # transform_token ($TOKEN, \%PAIRS, $KEY)
7053 # =======================================
7054 # Return the value associated to $KEY in %PAIRS, as used on $TOKEN
7055 # (which should be ?KEY? or any of the special %% requests)..
7056 sub transform_token ($$$)
7057 {
7058 my ($token, $transform, $key) = @_;
7059 my $res = $transform->{$key};
7060 prog_error "Unknown key `$key' in `$token'" unless defined $res;
7061 return $res;
7062 }
7065 # transform ($TOKEN, \%PAIRS)
7066 # ===========================
7067 # If ($TOKEN, $VAL) is in %PAIRS:
7068 # - replaces %KEY% with $VAL,
7069 # - enables/disables ?KEY? and ?!KEY?,
7070 # - replaces %?KEY% with TRUE or FALSE.
7071 # - replaces %KEY?IFTRUE%, %KEY:IFFALSE%, and %KEY?IFTRUE:IFFALSE% with
7072 # IFTRUE / IFFALSE, as appropriate.
7073 sub transform ($$)
7074 {
7075 my ($token, $transform) = @_;
7077 # %KEY%.
7078 # Must be before the following pattern to exclude the case
7079 # when there is neither IFTRUE nor IFFALSE.
7080 if ($token =~ /^%([\w\-]+)%$/)
7081 {
7082 return transform_token ($token, $transform, $1);
7083 }
7084 # %KEY?IFTRUE%, %KEY:IFFALSE%, and %KEY?IFTRUE:IFFALSE%.
7085 elsif ($token =~ /^%([\w\-]+)(?:\?([^?:%]+))?(?::([^?:%]+))?%$/)
7086 {
7087 return transform_token ($token, $transform, $1) ? ($2 || '') : ($3 || '');
7088 }
7089 # %?KEY%.
7090 elsif ($token =~ /^%\?([\w\-]+)%$/)
7091 {
7092 return transform_token ($token, $transform, $1) ? 'TRUE' : 'FALSE';
7093 }
7094 # ?KEY? and ?!KEY?.
7095 elsif ($token =~ /^ \? (!?) ([\w\-]+) \? $/x)
7096 {
7097 my $neg = ($1 eq '!') ? 1 : 0;
7098 my $val = transform_token ($token, $transform, $2);
7099 return (!!$val == $neg) ? '##%' : '';
7100 }
7101 else
7102 {
7103 prog_error "Unknown request format: $token";
7104 }
7105 }
7108 # @PARAGRAPHS
7109 # &make_paragraphs ($MAKEFILE, [%TRANSFORM])
7110 # ------------------------------------------
7111 # Load a $MAKEFILE, apply the %TRANSFORM, and return it as a list of
7112 # paragraphs.
7113 sub make_paragraphs ($%)
7114 {
7115 my ($file, %transform) = @_;
7117 # Complete %transform with global options.
7118 # Note that %transform goes last, so it overrides global options.
7119 %transform = ('CYGNUS' => !! option 'cygnus',
7120 'MAINTAINER-MODE'
7121 => $seen_maint_mode ? subst ('MAINTAINER_MODE_TRUE') : '',
7123 'XZ' => !! option 'dist-xz',
7124 'LZMA' => !! option 'dist-lzma',
7125 'BZIP2' => !! option 'dist-bzip2',
7126 'COMPRESS' => !! option 'dist-tarZ',
7127 'GZIP' => ! option 'no-dist-gzip',
7128 'SHAR' => !! option 'dist-shar',
7129 'ZIP' => !! option 'dist-zip',
7131 'INSTALL-INFO' => ! option 'no-installinfo',
7132 'INSTALL-MAN' => ! option 'no-installman',
7133 'HAVE-MANS' => !! var ('MANS'),
7134 'CK-NEWS' => !! option 'check-news',
7136 'SUBDIRS' => !! var ('SUBDIRS'),
7137 'TOPDIR_P' => $relative_dir eq '.',
7139 'BUILD' => ($seen_canonical >= AC_CANONICAL_BUILD),
7140 'HOST' => ($seen_canonical >= AC_CANONICAL_HOST),
7141 'TARGET' => ($seen_canonical >= AC_CANONICAL_TARGET),
7143 'LIBTOOL' => !! var ('LIBTOOL'),
7144 'NONLIBTOOL' => 1,
7145 'FIRST' => ! $transformed_files{$file},
7146 %transform);
7148 $transformed_files{$file} = 1;
7149 $_ = $am_file_cache{$file};
7151 if (! defined $_)
7152 {
7153 verb "reading $file";
7154 # Swallow the whole file.
7155 my $fc_file = new Automake::XFile "< $file";
7156 my $saved_dollar_slash = $/;
7157 undef $/;
7158 $_ = $fc_file->getline;
7159 $/ = $saved_dollar_slash;
7160 $fc_file->close;
7162 # Remove ##-comments.
7163 # Besides we don't need more than two consecutive new-lines.
7164 s/(?:$IGNORE_PATTERN|(?<=\n\n)\n+)//gom;
7166 $am_file_cache{$file} = $_;
7167 }
7169 # Substitute Automake template tokens.
7170 s/(?: % \?? [\w\-]+ %
7171 | % [\w\-]+ (?:\?[^?:%]+)? (?::[^?:%]+)? %
7172 | \? !? [\w\-]+ \?
7173 )/transform($&, \%transform)/gex;
7174 # transform() may have added some ##%-comments to strip.
7175 # (we use `##%' instead of `##' so we can distinguish ##%##%##% from
7176 # ####### and do not remove the latter.)
7177 s/^[ \t]*(?:##%)+.*\n//gm;
7179 # Split at unescaped new lines.
7180 my @lines = split (/(?<!\\)\n/, $_);
7181 my @res;
7183 while (defined ($_ = shift @lines))
7184 {
7185 my $paragraph = $_;
7186 # If we are a rule, eat as long as we start with a tab.
7187 if (/$RULE_PATTERN/smo)
7188 {
7189 while (defined ($_ = shift @lines) && $_ =~ /^\t/)
7190 {
7191 $paragraph .= "\n$_";
7192 }
7193 unshift (@lines, $_);
7194 }
7196 # If we are a comments, eat as much comments as you can.
7197 elsif (/$COMMENT_PATTERN/smo)
7198 {
7199 while (defined ($_ = shift @lines)
7200 && $_ =~ /$COMMENT_PATTERN/smo)
7201 {
7202 $paragraph .= "\n$_";
7203 }
7204 unshift (@lines, $_);
7205 }
7207 push @res, $paragraph;
7208 }
7210 return @res;
7211 }
7215 # ($COMMENT, $VARIABLES, $RULES)
7216 # &file_contents_internal ($IS_AM, $FILE, $WHERE, [%TRANSFORM])
7217 # -------------------------------------------------------------
7218 # Return contents of a file from $libdir/am, automatically skipping
7219 # macros or rules which are already known. $IS_AM iff the caller is
7220 # reading an Automake file (as opposed to the user's Makefile.am).
7221 sub file_contents_internal ($$$%)
7222 {
7223 my ($is_am, $file, $where, %transform) = @_;
7225 $where->set ($file);
7227 my $result_vars = '';
7228 my $result_rules = '';
7229 my $comment = '';
7230 my $spacing = '';
7232 # The following flags are used to track rules spanning across
7233 # multiple paragraphs.
7234 my $is_rule = 0; # 1 if we are processing a rule.
7235 my $discard_rule = 0; # 1 if the current rule should not be output.
7237 # We save the conditional stack on entry, and then check to make
7238 # sure it is the same on exit. This lets us conditionally include
7239 # other files.
7240 my @saved_cond_stack = @cond_stack;
7241 my $cond = new Automake::Condition (@cond_stack);
7243 foreach (make_paragraphs ($file, %transform))
7244 {
7245 # FIXME: no line number available.
7246 $where->set ($file);
7248 # Sanity checks.
7249 error $where, "blank line following trailing backslash:\n$_"
7250 if /\\$/;
7251 error $where, "comment following trailing backslash:\n$_"
7252 if /\\#/;
7254 if (/^$/)
7255 {
7256 $is_rule = 0;
7257 # Stick empty line before the incoming macro or rule.
7258 $spacing = "\n";
7259 }
7260 elsif (/$COMMENT_PATTERN/mso)
7261 {
7262 $is_rule = 0;
7263 # Stick comments before the incoming macro or rule.
7264 $comment = "$_\n";
7265 }
7267 # Handle inclusion of other files.
7268 elsif (/$INCLUDE_PATTERN/o)
7269 {
7270 if ($cond != FALSE)
7271 {
7272 my $file = ($is_am ? "$libdir/am/" : '') . $1;
7273 $where->push_context ("`$file' included from here");
7274 # N-ary `.=' fails.
7275 my ($com, $vars, $rules)
7276 = file_contents_internal ($is_am, $file, $where, %transform);
7277 $where->pop_context;
7278 $comment .= $com;
7279 $result_vars .= $vars;
7280 $result_rules .= $rules;
7281 }
7282 }
7284 # Handling the conditionals.
7285 elsif (/$IF_PATTERN/o)
7286 {
7287 $cond = cond_stack_if ($1, $2, $file);
7288 }
7289 elsif (/$ELSE_PATTERN/o)
7290 {
7291 $cond = cond_stack_else ($1, $2, $file);
7292 }
7293 elsif (/$ENDIF_PATTERN/o)
7294 {
7295 $cond = cond_stack_endif ($1, $2, $file);
7296 }
7298 # Handling rules.
7299 elsif (/$RULE_PATTERN/mso)
7300 {
7301 $is_rule = 1;
7302 $discard_rule = 0;
7303 # Separate relationship from optional actions: the first
7304 # `new-line tab" not preceded by backslash (continuation
7305 # line).
7306 my $paragraph = $_;
7307 /^(.*?)(?:(?<!\\)\n(\t.*))?$/s;
7308 my ($relationship, $actions) = ($1, $2 || '');
7310 # Separate targets from dependencies: the first colon.
7311 $relationship =~ /^([^:]+\S+) *: *(.*)$/som;
7312 my ($targets, $dependencies) = ($1, $2);
7313 # Remove the escaped new lines.
7314 # I don't know why, but I have to use a tmp $flat_deps.
7315 my $flat_deps = &flatten ($dependencies);
7316 my @deps = split (' ', $flat_deps);
7318 foreach (split (' ', $targets))
7319 {
7320 # FIXME: 1. We are not robust to people defining several targets
7321 # at once, only some of them being in %dependencies. The
7322 # actions from the targets in %dependencies are usually generated
7323 # from the content of %actions, but if some targets in $targets
7324 # are not in %dependencies the ELSE branch will output
7325 # a rule for all $targets (i.e. the targets which are both
7326 # in %dependencies and $targets will have two rules).
7328 # FIXME: 2. The logic here is not able to output a
7329 # multi-paragraph rule several time (e.g. for each condition
7330 # it is defined for) because it only knows the first paragraph.
7332 # FIXME: 3. We are not robust to people defining a subset
7333 # of a previously defined "multiple-target" rule. E.g.
7334 # `foo:' after `foo bar:'.
7336 # Output only if not in FALSE.
7337 if (defined $dependencies{$_} && $cond != FALSE)
7338 {
7339 &depend ($_, @deps);
7340 register_action ($_, $actions);
7341 }
7342 else
7343 {
7344 # Free-lance dependency. Output the rule for all the
7345 # targets instead of one by one.
7346 my @undefined_conds =
7347 Automake::Rule::define ($targets, $file,
7348 $is_am ? RULE_AUTOMAKE : RULE_USER,
7349 $cond, $where);
7350 for my $undefined_cond (@undefined_conds)
7351 {
7352 my $condparagraph = $paragraph;
7353 $condparagraph =~ s/^/$undefined_cond->subst_string/gme;
7354 $result_rules .= "$spacing$comment$condparagraph\n";
7355 }
7356 if (scalar @undefined_conds == 0)
7357 {
7358 # Remember to discard next paragraphs
7359 # if they belong to this rule.
7360 # (but see also FIXME: #2 above.)
7361 $discard_rule = 1;
7362 }
7363 $comment = $spacing = '';
7364 last;
7365 }
7366 }
7367 }
7369 elsif (/$ASSIGNMENT_PATTERN/mso)
7370 {
7371 my ($var, $type, $val) = ($1, $2, $3);
7372 error $where, "variable `$var' with trailing backslash"
7373 if /\\$/;
7375 $is_rule = 0;
7377 Automake::Variable::define ($var,
7378 $is_am ? VAR_AUTOMAKE : VAR_MAKEFILE,
7379 $type, $cond, $val, $comment, $where,
7380 VAR_ASIS)
7381 if $cond != FALSE;
7383 $comment = $spacing = '';
7384 }
7385 else
7386 {
7387 # This isn't an error; it is probably some tokens which
7388 # configure is supposed to replace, such as `@SET-MAKE@',
7389 # or some part of a rule cut by an if/endif.
7390 if (! $cond->false && ! ($is_rule && $discard_rule))
7391 {
7392 s/^/$cond->subst_string/gme;
7393 $result_rules .= "$spacing$comment$_\n";
7394 }
7395 $comment = $spacing = '';
7396 }
7397 }
7399 error ($where, @cond_stack ?
7400 "unterminated conditionals: @cond_stack" :
7401 "too many conditionals closed in include file")
7402 if "@saved_cond_stack" ne "@cond_stack";
7404 return ($comment, $result_vars, $result_rules);
7405 }
7408 # $CONTENTS
7409 # &file_contents ($BASENAME, $WHERE, [%TRANSFORM])
7410 # ------------------------------------------------
7411 # Return contents of a file from $libdir/am, automatically skipping
7412 # macros or rules which are already known.
7413 sub file_contents ($$%)
7414 {
7415 my ($basename, $where, %transform) = @_;
7416 my ($comments, $variables, $rules) =
7417 file_contents_internal (1, "$libdir/am/$basename.am", $where,
7418 %transform);
7419 return "$comments$variables$rules";
7420 }
7423 # @PREFIX
7424 # &am_primary_prefixes ($PRIMARY, $CAN_DIST, @PREFIXES)
7425 # -----------------------------------------------------
7426 # Find all variable prefixes that are used for install directories. A
7427 # prefix `zar' qualifies iff:
7428 #
7429 # * `zardir' is a variable.
7430 # * `zar_PRIMARY' is a variable.
7431 #
7432 # As a side effect, it looks for misspellings. It is an error to have
7433 # a variable ending in a "reserved" suffix whose prefix is unknown, e.g.
7434 # "bni_PROGRAMS". However, unusual prefixes are allowed if a variable
7435 # of the same name (with "dir" appended) exists. For instance, if the
7436 # variable "zardir" is defined, then "zar_PROGRAMS" becomes valid.
7437 # This is to provide a little extra flexibility in those cases which
7438 # need it.
7439 sub am_primary_prefixes ($$@)
7440 {
7441 my ($primary, $can_dist, @prefixes) = @_;
7443 local $_;
7444 my %valid = map { $_ => 0 } @prefixes;
7445 $valid{'EXTRA'} = 0;
7446 foreach my $var (variables $primary)
7447 {
7448 # Automake is allowed to define variables that look like primaries
7449 # but which aren't. E.g. INSTALL_sh_DATA.
7450 # Autoconf can also define variables like INSTALL_DATA, so
7451 # ignore all configure variables (at least those which are not
7452 # redefined in Makefile.am).
7453 # FIXME: We should make sure that these variables are not
7454 # conditionally defined (or else adjust the condition below).
7455 my $def = $var->def (TRUE);
7456 next if $def && $def->owner != VAR_MAKEFILE;
7458 my $varname = $var->name;
7460 if ($varname =~ /^(nobase_)?(dist_|nodist_)?(.*)_[[:alnum:]]+$/)
7461 {
7462 my ($base, $dist, $X) = ($1 || '', $2 || '', $3 || '');
7463 if ($dist ne '' && ! $can_dist)
7464 {
7465 err_var ($var,
7466 "invalid variable `$varname': `dist' is forbidden");
7467 }
7468 # Standard directories must be explicitly allowed.
7469 elsif (! defined $valid{$X} && exists $standard_prefix{$X})
7470 {
7471 err_var ($var,
7472 "`${X}dir' is not a legitimate directory " .
7473 "for `$primary'");
7474 }
7475 # A not explicitly valid directory is allowed if Xdir is defined.
7476 elsif (! defined $valid{$X} &&
7477 $var->requires_variables ("`$varname' is used", "${X}dir"))
7478 {
7479 # Nothing to do. Any error message has been output
7480 # by $var->requires_variables.
7481 }
7482 else
7483 {
7484 # Ensure all extended prefixes are actually used.
7485 $valid{"$base$dist$X"} = 1;
7486 }
7487 }
7488 else
7489 {
7490 prog_error "unexpected variable name: $varname";
7491 }
7492 }
7494 # Return only those which are actually defined.
7495 return sort grep { var ($_ . '_' . $primary) } keys %valid;
7496 }
7499 # Handle `where_HOW' variable magic. Does all lookups, generates
7500 # install code, and possibly generates code to define the primary
7501 # variable. The first argument is the name of the .am file to munge,
7502 # the second argument is the primary variable (e.g. HEADERS), and all
7503 # subsequent arguments are possible installation locations.
7504 #
7505 # Returns list of [$location, $value] pairs, where
7506 # $value's are the values in all where_HOW variable, and $location
7507 # there associated location (the place here their parent variables were
7508 # defined).
7509 #
7510 # FIXME: this should be rewritten to be cleaner. It should be broken
7511 # up into multiple functions.
7512 #
7513 # Usage is: am_install_var (OPTION..., file, HOW, where...)
7514 sub am_install_var
7515 {
7516 my (@args) = @_;
7518 my $do_require = 1;
7519 my $can_dist = 0;
7520 my $default_dist = 0;
7521 while (@args)
7522 {
7523 if ($args[0] eq '-noextra')
7524 {
7525 $do_require = 0;
7526 }
7527 elsif ($args[0] eq '-candist')
7528 {
7529 $can_dist = 1;
7530 }
7531 elsif ($args[0] eq '-defaultdist')
7532 {
7533 $default_dist = 1;
7534 $can_dist = 1;
7535 }
7536 elsif ($args[0] !~ /^-/)
7537 {
7538 last;
7539 }
7540 shift (@args);
7541 }
7543 my ($file, $primary, @prefix) = @args;
7545 # Now that configure substitutions are allowed in where_HOW
7546 # variables, it is an error to actually define the primary. We
7547 # allow `JAVA', as it is customarily used to mean the Java
7548 # interpreter. This is but one of several Java hacks. Similarly,
7549 # `PYTHON' is customarily used to mean the Python interpreter.
7550 reject_var $primary, "`$primary' is an anachronism"
7551 unless $primary eq 'JAVA' || $primary eq 'PYTHON';
7553 # Get the prefixes which are valid and actually used.
7554 @prefix = am_primary_prefixes ($primary, $can_dist, @prefix);
7556 # If a primary includes a configure substitution, then the EXTRA_
7557 # form is required. Otherwise we can't properly do our job.
7558 my $require_extra;
7560 my @used = ();
7561 my @result = ();
7563 foreach my $X (@prefix)
7564 {
7565 my $nodir_name = $X;
7566 my $one_name = $X . '_' . $primary;
7567 my $one_var = var $one_name;
7569 my $strip_subdir = 1;
7570 # If subdir prefix should be preserved, do so.
7571 if ($nodir_name =~ /^nobase_/)
7572 {
7573 $strip_subdir = 0;
7574 $nodir_name =~ s/^nobase_//;
7575 }
7577 # If files should be distributed, do so.
7578 my $dist_p = 0;
7579 if ($can_dist)
7580 {
7581 $dist_p = (($default_dist && $nodir_name !~ /^nodist_/)
7582 || (! $default_dist && $nodir_name =~ /^dist_/));
7583 $nodir_name =~ s/^(dist|nodist)_//;
7584 }
7587 # Use the location of the currently processed variable.
7588 # We are not processing a particular condition, so pick the first
7589 # available.
7590 my $tmpcond = $one_var->conditions->one_cond;
7591 my $where = $one_var->rdef ($tmpcond)->location->clone;
7593 # Append actual contents of where_PRIMARY variable to
7594 # @result, skipping @substitutions@.
7595 foreach my $locvals ($one_var->value_as_list_recursive (location => 1))
7596 {
7597 my ($loc, $value) = @$locvals;
7598 # Skip configure substitutions.
7599 if ($value =~ /^\@.*\@$/)
7600 {
7601 if ($nodir_name eq 'EXTRA')
7602 {
7603 error ($where,
7604 "`$one_name' contains configure substitution, "
7605 . "but shouldn't");
7606 }
7607 # Check here to make sure variables defined in
7608 # configure.ac do not imply that EXTRA_PRIMARY
7609 # must be defined.
7610 elsif (! defined $configure_vars{$one_name})
7611 {
7612 $require_extra = $one_name
7613 if $do_require;
7614 }
7615 }
7616 else
7617 {
7618 # Strip any $(EXEEXT) suffix the user might have added, or this
7619 # will confuse &handle_source_transform and &check_canonical_spelling.
7620 # We'll add $(EXEEXT) back later anyway.
7621 # Do it here rather than in handle_programs so the uniquifying at the
7622 # end of this function works.
7623 ${$locvals}[1] =~ s/\$\(EXEEXT\)$//
7624 if $primary eq 'PROGRAMS';
7626 push (@result, $locvals);
7627 }
7628 }
7629 # A blatant hack: we rewrite each _PROGRAMS primary to include
7630 # EXEEXT.
7631 append_exeext { 1 } $one_name
7632 if $primary eq 'PROGRAMS';
7633 # "EXTRA" shouldn't be used when generating clean targets,
7634 # all, or install targets. We used to warn if EXTRA_FOO was
7635 # defined uselessly, but this was annoying.
7636 next
7637 if $nodir_name eq 'EXTRA';
7639 if ($nodir_name eq 'check')
7640 {
7641 push (@check, '$(' . $one_name . ')');
7642 }
7643 else
7644 {
7645 push (@used, '$(' . $one_name . ')');
7646 }
7648 # Is this to be installed?
7649 my $install_p = $nodir_name ne 'noinst' && $nodir_name ne 'check';
7651 # If so, with install-exec? (or install-data?).
7652 my $exec_p = ($nodir_name =~ /$EXEC_DIR_PATTERN/o);
7654 my $check_options_p = $install_p && !! option 'std-options';
7656 # Use the location of the currently processed variable as context.
7657 $where->push_context ("while processing `$one_name'");
7659 # The variable containing all files to distribute.
7660 my $distvar = "\$($one_name)";
7661 $distvar = shadow_unconditionally ($one_name, $where)
7662 if ($dist_p && $one_var->has_conditional_contents);
7664 # Singular form of $PRIMARY.
7665 (my $one_primary = $primary) =~ s/S$//;
7666 $output_rules .= &file_contents ($file, $where,
7667 PRIMARY => $primary,
7668 ONE_PRIMARY => $one_primary,
7669 DIR => $X,
7670 NDIR => $nodir_name,
7671 BASE => $strip_subdir,
7673 EXEC => $exec_p,
7674 INSTALL => $install_p,
7675 DIST => $dist_p,
7676 DISTVAR => $distvar,
7677 'CK-OPTS' => $check_options_p);
7678 }
7680 # The JAVA variable is used as the name of the Java interpreter.
7681 # The PYTHON variable is used as the name of the Python interpreter.
7682 if (@used && $primary ne 'JAVA' && $primary ne 'PYTHON')
7683 {
7684 # Define it.
7685 define_pretty_variable ($primary, TRUE, INTERNAL, @used);
7686 $output_vars .= "\n";
7687 }
7689 err_var ($require_extra,
7690 "`$require_extra' contains configure substitution,\n"
7691 . "but `EXTRA_$primary' not defined")
7692 if ($require_extra && ! var ('EXTRA_' . $primary));
7694 # Push here because PRIMARY might be configure time determined.
7695 push (@all, '$(' . $primary . ')')
7696 if @used && $primary ne 'JAVA' && $primary ne 'PYTHON';
7698 # Make the result unique. This lets the user use conditionals in
7699 # a natural way, but still lets us program lazily -- we don't have
7700 # to worry about handling a particular object more than once.
7701 # We will keep only one location per object.
7702 my %result = ();
7703 for my $pair (@result)
7704 {
7705 my ($loc, $val) = @$pair;
7706 $result{$val} = $loc;
7707 }
7708 my @l = sort keys %result;
7709 return map { [$result{$_}->clone, $_] } @l;
7710 }
7713 ################################################################
7715 # Each key in this hash is the name of a directory holding a
7716 # Makefile.in. These variables are local to `is_make_dir'.
7717 my %make_dirs = ();
7718 my $make_dirs_set = 0;
7720 sub is_make_dir
7721 {
7722 my ($dir) = @_;
7723 if (! $make_dirs_set)
7724 {
7725 foreach my $iter (@configure_input_files)
7726 {
7727 $make_dirs{dirname ($iter)} = 1;
7728 }
7729 # We also want to notice Makefile.in's.
7730 foreach my $iter (@other_input_files)
7731 {
7732 if ($iter =~ /Makefile\.in$/)
7733 {
7734 $make_dirs{dirname ($iter)} = 1;
7735 }
7736 }
7737 $make_dirs_set = 1;
7738 }
7739 return defined $make_dirs{$dir};
7740 }
7742 ################################################################
7744 # Find the aux dir. This should match the algorithm used by
7745 # ./configure. (See the Autoconf documentation for for
7746 # AC_CONFIG_AUX_DIR.)
7747 sub locate_aux_dir ()
7748 {
7749 if (! $config_aux_dir_set_in_configure_ac)
7750 {
7751 # The default auxiliary directory is the first
7752 # of ., .., or ../.. that contains install-sh.
7753 # Assume . if install-sh doesn't exist yet.
7754 for my $dir (qw (. .. ../..))
7755 {
7756 if (-f "$dir/install-sh")
7757 {
7758 $config_aux_dir = $dir;
7759 last;
7760 }
7761 }
7762 $config_aux_dir = '.' unless $config_aux_dir;
7763 }
7764 # Avoid unsightly '/.'s.
7765 $am_config_aux_dir =
7766 '$(top_srcdir)' . ($config_aux_dir eq '.' ? "" : "/$config_aux_dir");
7767 $am_config_aux_dir =~ s,/*$,,;
7768 }
7771 # &maybe_push_required_file ($DIR, $FILE, $FULLFILE)
7772 # --------------------------------------------------
7773 # See if we want to push this file onto dist_common. This function
7774 # encodes the rules for deciding when to do so.
7775 sub maybe_push_required_file
7776 {
7777 my ($dir, $file, $fullfile) = @_;
7779 if ($dir eq $relative_dir)
7780 {
7781 push_dist_common ($file);
7782 return 1;
7783 }
7784 elsif ($relative_dir eq '.' && ! &is_make_dir ($dir))
7785 {
7786 # If we are doing the topmost directory, and the file is in a
7787 # subdir which does not have a Makefile, then we distribute it
7788 # here.
7790 # If a required file is above the source tree, it is important
7791 # to prefix it with `$(srcdir)' so that no VPATH search is
7792 # performed. Otherwise problems occur with Make implementations
7793 # that rewrite and simplify rules whose dependencies are found in a
7794 # VPATH location. Here is an example with OSF1/Tru64 Make.
7795 #
7796 # % cat Makefile
7797 # VPATH = sub
7798 # distdir: ../a
7799 # echo ../a
7800 # % ls
7801 # Makefile a
7802 # % make
7803 # echo a
7804 # a
7805 #
7806 # Dependency `../a' was found in `sub/../a', but this make
7807 # implementation simplified it as `a'. (Note that the sub/
7808 # directory does not even exist.)
7809 #
7810 # This kind of VPATH rewriting seems hard to cancel. The
7811 # distdir.am hack against VPATH rewriting works only when no
7812 # simplification is done, i.e., for dependencies which are in
7813 # subdirectories, not in enclosing directories. Hence, in
7814 # the latter case we use a full path to make sure no VPATH
7815 # search occurs.
7816 $fullfile = '$(srcdir)/' . $fullfile
7817 if $dir =~ m,^\.\.(?:$|/),;
7819 push_dist_common ($fullfile);
7820 return 1;
7821 }
7822 return 0;
7823 }
7826 # If a file name appears as a key in this hash, then it has already
7827 # been checked for. This allows us not to report the same error more
7828 # than once.
7829 my %required_file_not_found = ();
7831 # &require_file_internal ($WHERE, $MYSTRICT, $DIRECTORY, @FILES)
7832 # --------------------------------------------------------------
7833 # Verify that the file must exist in $DIRECTORY, or install it.
7834 # $MYSTRICT is the strictness level at which this file becomes required.
7835 sub require_file_internal ($$$@)
7836 {
7837 my ($where, $mystrict, $dir, @files) = @_;
7839 foreach my $file (@files)
7840 {
7841 my $fullfile = "$dir/$file";
7842 my $found_it = 0;
7843 my $dangling_sym = 0;
7845 if (-l $fullfile && ! -f $fullfile)
7846 {
7847 $dangling_sym = 1;
7848 }
7849 elsif (dir_has_case_matching_file ($dir, $file))
7850 {
7851 $found_it = 1;
7852 maybe_push_required_file ($dir, $file, $fullfile);
7853 }
7855 # `--force-missing' only has an effect if `--add-missing' is
7856 # specified.
7857 if ($found_it && (! $add_missing || ! $force_missing))
7858 {
7859 next;
7860 }
7861 else
7862 {
7863 # If we've already looked for it, we're done. You might
7864 # wonder why we don't do this before searching for the
7865 # file. If we do that, then something like
7866 # AC_OUTPUT(subdir/foo foo) will fail to put foo.in into
7867 # DIST_COMMON.
7868 if (! $found_it)
7869 {
7870 next if defined $required_file_not_found{$fullfile};
7871 $required_file_not_found{$fullfile} = 1;
7872 }
7874 if ($strictness >= $mystrict)
7875 {
7876 if ($dangling_sym && $add_missing)
7877 {
7878 unlink ($fullfile);
7879 }
7881 my $trailer = '';
7882 my $trailer2 = '';
7883 my $suppress = 0;
7885 # Only install missing files according to our desired
7886 # strictness level.
7887 my $message = "required file `$fullfile' not found";
7888 if ($add_missing)
7889 {
7890 if (-f "$libdir/$file")
7891 {
7892 $suppress = 1;
7894 # Install the missing file. Symlink if we
7895 # can, copy if we must. Note: delete the file
7896 # first, in case it is a dangling symlink.
7897 $message = "installing `$fullfile'";
7899 # The license file should not be volatile.
7900 if ($file eq "COPYING")
7901 {
7902 $message .= " using GNU General Public License v3 file";
7903 $trailer2 = "\n Consider adding the COPYING file"
7904 . " to the version control system"
7905 . "\n for your code, to avoid questions"
7906 . " about which license your project uses.";
7907 }
7909 # Windows Perl will hang if we try to delete a
7910 # file that doesn't exist.
7911 unlink ($fullfile) if -f $fullfile;
7912 if ($symlink_exists && ! $copy_missing)
7913 {
7914 if (! symlink ("$libdir/$file", $fullfile)
7915 || ! -e $fullfile)
7916 {
7917 $suppress = 0;
7918 $trailer = "; error while making link: $!";
7919 }
7920 }
7921 elsif (system ('cp', "$libdir/$file", $fullfile))
7922 {
7923 $suppress = 0;
7924 $trailer = "\n error while copying";
7925 }
7926 set_dir_cache_file ($dir, $file);
7927 }
7929 if (! maybe_push_required_file (dirname ($fullfile),
7930 $file, $fullfile))
7931 {
7932 if (! $found_it && ! $automake_will_process_aux_dir)
7933 {
7934 # We have added the file but could not push it
7935 # into DIST_COMMON, probably because this is
7936 # an auxiliary file and we are not processing
7937 # the top level Makefile. Furthermore Automake
7938 # hasn't been asked to create the Makefile.in
7939 # that distributes the aux dir files.
7940 error ($where, 'Please make a full run of automake'
7941 . " so $fullfile gets distributed.");
7942 }
7943 }
7944 }
7945 else
7946 {
7947 $trailer = "\n `automake --add-missing' can install `$file'"
7948 if -f "$libdir/$file";
7949 }
7951 # If --force-missing was specified, and we have
7952 # actually found the file, then do nothing.
7953 next
7954 if $found_it && $force_missing;
7956 # If we couldn't install the file, but it is a target in
7957 # the Makefile, don't print anything. This allows files
7958 # like README, AUTHORS, or THANKS to be generated.
7959 next
7960 if !$suppress && rule $file;
7962 msg ($suppress ? 'note' : 'error', $where, "$message$trailer$trailer2");
7963 }
7964 }
7965 }
7966 }
7968 # &require_file ($WHERE, $MYSTRICT, @FILES)
7969 # -----------------------------------------
7970 sub require_file ($$@)
7971 {
7972 my ($where, $mystrict, @files) = @_;
7973 require_file_internal ($where, $mystrict, $relative_dir, @files);
7974 }
7976 # &require_file_with_macro ($COND, $MACRO, $MYSTRICT, @FILES)
7977 # -----------------------------------------------------------
7978 sub require_file_with_macro ($$$@)
7979 {
7980 my ($cond, $macro, $mystrict, @files) = @_;
7981 $macro = rvar ($macro) unless ref $macro;
7982 require_file ($macro->rdef ($cond)->location, $mystrict, @files);
7983 }
7985 # &require_libsource_with_macro ($COND, $MACRO, $MYSTRICT, @FILES)
7986 # ----------------------------------------------------------------
7987 # Require an AC_LIBSOURCEd file. If AC_CONFIG_LIBOBJ_DIR was called, it
7988 # must be in that directory. Otherwise expect it in the current directory.
7989 sub require_libsource_with_macro ($$$@)
7990 {
7991 my ($cond, $macro, $mystrict, @files) = @_;
7992 $macro = rvar ($macro) unless ref $macro;
7993 if ($config_libobj_dir)
7994 {
7995 require_file_internal ($macro->rdef ($cond)->location, $mystrict,
7996 $config_libobj_dir, @files);
7997 }
7998 else
7999 {
8000 require_file ($macro->rdef ($cond)->location, $mystrict, @files);
8001 }
8002 }
8004 # Queue to push require_conf_file requirements to.
8005 my $required_conf_file_queue;
8007 # &queue_required_conf_file ($QUEUE, $KEY, $DIR, $WHERE, $MYSTRICT, @FILES)
8008 # -------------------------------------------------------------------------
8009 sub queue_required_conf_file ($$$$@)
8010 {
8011 my ($queue, $key, $dir, $where, $mystrict, @files) = @_;
8012 my @serial_loc;
8013 if (ref $where)
8014 {
8015 @serial_loc = (QUEUE_LOCATION, $where->serialize ());
8016 }
8017 else
8018 {
8019 @serial_loc = (QUEUE_STRING, $where);
8020 }
8021 $queue->enqueue ($key, $dir, @serial_loc, $mystrict, 0 + @files, @files);
8022 }
8024 # &require_queued_conf_file ($QUEUE)
8025 # ----------------------------------
8026 sub require_queued_conf_file ($)
8027 {
8028 my ($queue) = @_;
8029 my $where;
8030 my $dir = $queue->dequeue ();
8031 my $loc_key = $queue->dequeue ();
8032 if ($loc_key eq QUEUE_LOCATION)
8033 {
8034 $where = Automake::Location::deserialize ($queue);
8035 }
8036 elsif ($loc_key eq QUEUE_STRING)
8037 {
8038 $where = $queue->dequeue ();
8039 }
8040 else
8041 {
8042 prog_error "unexpected key $loc_key";
8043 }
8044 my $mystrict = $queue->dequeue ();
8045 my $nfiles = $queue->dequeue ();
8046 my @files;
8047 push @files, $queue->dequeue ()
8048 foreach (1 .. $nfiles);
8050 # Dequeuing happens outside of per-makefile context, so we have to
8051 # set the variables used by require_file_internal and the functions
8052 # it calls. Gross!
8053 $relative_dir = $dir;
8054 require_file_internal ($where, $mystrict, $config_aux_dir, @files);
8055 }
8057 # &require_conf_file ($WHERE, $MYSTRICT, @FILES)
8058 # ----------------------------------------------
8059 # Looks in configuration path, as specified by AC_CONFIG_AUX_DIR;
8060 # worker threads may queue up the action to be serialized by the master.
8061 #
8062 # FIXME: this seriously relies on the semantics of require_file_internal
8063 # and maybe_push_required_file, in that we exploit the fact that only the
8064 # contents of the last handled output file may be impacted (which in turn
8065 # is dealt with by the master thread).
8066 sub require_conf_file ($$@)
8067 {
8068 my ($where, $mystrict, @files) = @_;
8069 if (defined $required_conf_file_queue)
8070 {
8071 queue_required_conf_file ($required_conf_file_queue, QUEUE_CONF_FILE,
8072 $relative_dir, $where, $mystrict, @files);
8073 }
8074 else
8075 {
8076 require_file_internal ($where, $mystrict, $config_aux_dir, @files);
8077 }
8078 }
8081 # &require_conf_file_with_macro ($COND, $MACRO, $MYSTRICT, @FILES)
8082 # ----------------------------------------------------------------
8083 sub require_conf_file_with_macro ($$$@)
8084 {
8085 my ($cond, $macro, $mystrict, @files) = @_;
8086 require_conf_file (rvar ($macro)->rdef ($cond)->location,
8087 $mystrict, @files);
8088 }
8090 ################################################################
8092 # &require_build_directory ($DIRECTORY)
8093 # -------------------------------------
8094 # Emit rules to create $DIRECTORY if needed, and return
8095 # the file that any target requiring this directory should be made
8096 # dependent upon.
8097 # We don't want to emit the rule twice, and want to reuse it
8098 # for directories with equivalent names (e.g., `foo/bar' and `./foo//bar').
8099 sub require_build_directory ($)
8100 {
8101 my $directory = shift;
8103 return $directory_map{$directory} if exists $directory_map{$directory};
8105 my $cdir = File::Spec->canonpath ($directory);
8107 if (exists $directory_map{$cdir})
8108 {
8109 my $stamp = $directory_map{$cdir};
8110 $directory_map{$directory} = $stamp;
8111 return $stamp;
8112 }
8114 my $dirstamp = "$cdir/\$(am__dirstamp)";
8116 $directory_map{$directory} = $dirstamp;
8117 $directory_map{$cdir} = $dirstamp;
8119 # Set a variable for the dirstamp basename.
8120 define_pretty_variable ('am__dirstamp', TRUE, INTERNAL,
8121 '$(am__leading_dot)dirstamp');
8123 # Directory must be removed by `make distclean'.
8124 $clean_files{$dirstamp} = DIST_CLEAN;
8126 $output_rules .= ("$dirstamp:\n"
8127 . "\t\@\$(MKDIR_P) $directory\n"
8128 . "\t\@: > $dirstamp\n");
8130 return $dirstamp;
8131 }
8133 # &require_build_directory_maybe ($FILE)
8134 # --------------------------------------
8135 # If $FILE lies in a subdirectory, emit a rule to create this
8136 # directory and return the file that $FILE should be made
8137 # dependent upon. Otherwise, just return the empty string.
8138 sub require_build_directory_maybe ($)
8139 {
8140 my $file = shift;
8141 my $directory = dirname ($file);
8143 if ($directory ne '.')
8144 {
8145 return require_build_directory ($directory);
8146 }
8147 else
8148 {
8149 return '';
8150 }
8151 }
8153 ################################################################
8155 # Push a list of files onto dist_common.
8156 sub push_dist_common
8157 {
8158 prog_error "push_dist_common run after handle_dist"
8159 if $handle_dist_run;
8160 Automake::Variable::define ('DIST_COMMON', VAR_AUTOMAKE, '+', TRUE, "@_",
8161 '', INTERNAL, VAR_PRETTY);
8162 }
8165 ################################################################
8167 # generate_makefile ($MAKEFILE_AM, $MAKEFILE_IN)
8168 # ----------------------------------------------
8169 # Generate a Makefile.in given the name of the corresponding Makefile and
8170 # the name of the file output by config.status.
8171 sub generate_makefile ($$)
8172 {
8173 my ($makefile_am, $makefile_in) = @_;
8175 # Reset all the Makefile.am related variables.
8176 initialize_per_input;
8178 # AUTOMAKE_OPTIONS can contains -W flags to disable or enable
8179 # warnings for this file. So hold any warning issued before
8180 # we have processed AUTOMAKE_OPTIONS.
8181 buffer_messages ('warning');
8183 # Name of input file ("Makefile.am") and output file
8184 # ("Makefile.in"). These have no directory components.
8185 $am_file_name = basename ($makefile_am);
8186 $in_file_name = basename ($makefile_in);
8188 # $OUTPUT is encoded. If it contains a ":" then the first element
8189 # is the real output file, and all remaining elements are input
8190 # files. We don't scan or otherwise deal with these input files,
8191 # other than to mark them as dependencies. See
8192 # &scan_autoconf_files for details.
8193 my ($makefile, @inputs) = split (/:/, $output_files{$makefile_in});
8195 $relative_dir = dirname ($makefile);
8196 $am_relative_dir = dirname ($makefile_am);
8197 $topsrcdir = backname ($relative_dir);
8199 read_main_am_file ($makefile_am);
8200 if (handle_options)
8201 {
8202 # Process buffered warnings.
8203 flush_messages;
8204 # Fatal error. Just return, so we can continue with next file.
8205 return;
8206 }
8207 # Process buffered warnings.
8208 flush_messages;
8210 # There are a few install-related variables that you should not define.
8211 foreach my $var ('PRE_INSTALL', 'POST_INSTALL', 'NORMAL_INSTALL')
8212 {
8213 my $v = var $var;
8214 if ($v)
8215 {
8216 my $def = $v->def (TRUE);
8217 prog_error "$var not defined in condition TRUE"
8218 unless $def;
8219 reject_var $var, "`$var' should not be defined"
8220 if $def->owner != VAR_AUTOMAKE;
8221 }
8222 }
8224 # Catch some obsolete variables.
8225 msg_var ('obsolete', 'INCLUDES',
8226 "`INCLUDES' is the old name for `AM_CPPFLAGS' (or `*_CPPFLAGS')")
8227 if var ('INCLUDES');
8229 # Must do this after reading .am file.
8230 define_variable ('subdir', $relative_dir, INTERNAL);
8232 # If DIST_SUBDIRS is defined, make sure SUBDIRS is, so that
8233 # recursive rules are enabled.
8234 define_pretty_variable ('SUBDIRS', TRUE, INTERNAL, '')
8235 if var 'DIST_SUBDIRS' && ! var 'SUBDIRS';
8237 # Check first, because we might modify some state.
8238 check_cygnus;
8239 check_gnu_standards;
8240 check_gnits_standards;
8242 handle_configure ($makefile_am, $makefile_in, $makefile, @inputs);
8243 handle_gettext;
8244 handle_libraries;
8245 handle_ltlibraries;
8246 handle_programs;
8247 handle_scripts;
8249 # These must be run after all the sources are scanned. They
8250 # use variables defined by &handle_libraries, &handle_ltlibraries,
8251 # or &handle_programs.
8252 handle_compile;
8253 handle_languages;
8254 handle_libtool;
8256 # Variables used by distdir.am and tags.am.
8257 define_pretty_variable ('SOURCES', TRUE, INTERNAL, @sources);
8258 if (! option 'no-dist')
8259 {
8260 define_pretty_variable ('DIST_SOURCES', TRUE, INTERNAL, @dist_sources);
8261 }
8263 handle_multilib;
8264 handle_texinfo;
8265 handle_emacs_lisp;
8266 handle_python;
8267 handle_java;
8268 handle_man_pages;
8269 handle_data;
8270 handle_headers;
8271 handle_subdirs;
8272 handle_tags;
8273 handle_minor_options;
8274 # Must come after handle_programs so that %known_programs is up-to-date.
8275 handle_tests;
8277 # This must come after most other rules.
8278 handle_dist;
8280 handle_footer;
8281 do_check_merge_target;
8282 handle_all ($makefile);
8284 # FIXME: Gross!
8285 if (var ('lib_LTLIBRARIES') && var ('bin_PROGRAMS'))
8286 {
8287 $output_rules .= "install-binPROGRAMS: install-libLTLIBRARIES\n\n";
8288 }
8289 if (var ('nobase_lib_LTLIBRARIES') && var ('bin_PROGRAMS'))
8290 {
8291 $output_rules .= "install-binPROGRAMS: install-nobase_libLTLIBRARIES\n\n";
8292 }
8294 handle_install;
8295 handle_clean ($makefile);
8296 handle_factored_dependencies;
8298 # Comes last, because all the above procedures may have
8299 # defined or overridden variables.
8300 $output_vars .= output_variables;
8302 check_typos;
8304 my ($out_file) = $output_directory . '/' . $makefile_in;
8306 if ($exit_code != 0)
8307 {
8308 verb "not writing $out_file because of earlier errors";
8309 return;
8310 }
8312 if (! -d ($output_directory . '/' . $am_relative_dir))
8313 {
8314 mkdir ($output_directory . '/' . $am_relative_dir, 0755);
8315 }
8317 # We make sure that `all:' is the first target.
8318 my $output =
8319 "$output_vars$output_all$output_header$output_rules$output_trailer";
8321 # Decide whether we must update the output file or not.
8322 # We have to update in the following situations.
8323 # * $force_generation is set.
8324 # * any of the output dependencies is younger than the output
8325 # * the contents of the output is different (this can happen
8326 # if the project has been populated with a file listed in
8327 # @common_files since the last run).
8328 # Output's dependencies are split in two sets:
8329 # * dependencies which are also configure dependencies
8330 # These do not change between each Makefile.am
8331 # * other dependencies, specific to the Makefile.am being processed
8332 # (such as the Makefile.am itself, or any Makefile fragment
8333 # it includes).
8334 my $timestamp = mtime $out_file;
8335 if (! $force_generation
8336 && $configure_deps_greatest_timestamp < $timestamp
8337 && $output_deps_greatest_timestamp < $timestamp
8338 && $output eq contents ($out_file))
8339 {
8340 verb "$out_file unchanged";
8341 # No need to update.
8342 return;
8343 }
8345 if (-e $out_file)
8346 {
8347 unlink ($out_file)
8348 or fatal "cannot remove $out_file: $!\n";
8349 }
8351 my $gm_file = new Automake::XFile "> $out_file";
8352 verb "creating $out_file";
8353 print $gm_file $output;
8354 }
8356 ################################################################
8361 ################################################################
8363 # Helper function for usage().
8364 sub print_autodist_files (@)
8365 {
8366 my @lcomm = sort (&uniq (@_));
8368 my @four;
8369 format USAGE_FORMAT =
8370 @<<<<<<<<<<<<<<<< @<<<<<<<<<<<<<<<< @<<<<<<<<<<<<<<<< @<<<<<<<<<<<<<<<<
8371 $four[0], $four[1], $four[2], $four[3]
8372 .
8373 local $~ = "USAGE_FORMAT";
8375 my $cols = 4;
8376 my $rows = int(@lcomm / $cols);
8377 my $rest = @lcomm % $cols;
8379 if ($rest)
8380 {
8381 $rows++;
8382 }
8383 else
8384 {
8385 $rest = $cols;
8386 }
8388 for (my $y = 0; $y < $rows; $y++)
8389 {
8390 @four = ("", "", "", "");
8391 for (my $x = 0; $x < $cols; $x++)
8392 {
8393 last if $y + 1 == $rows && $x == $rest;
8395 my $idx = (($x > $rest)
8396 ? ($rows * $rest + ($rows - 1) * ($x - $rest))
8397 : ($rows * $x));
8399 $idx += $y;
8400 $four[$x] = $lcomm[$idx];
8401 }
8402 write;
8403 }
8404 }
8407 # Print usage information.
8408 sub usage ()
8409 {
8410 print "Usage: $0 [OPTION] ... [Makefile]...
8412 Generate Makefile.in for configure from Makefile.am.
8414 Operation modes:
8415 --help print this help, then exit
8416 --version print version number, then exit
8417 -v, --verbose verbosely list files processed
8418 --no-force only update Makefile.in's that are out of date
8419 -W, --warnings=CATEGORY report the warnings falling in CATEGORY
8421 Dependency tracking:
8422 -i, --ignore-deps disable dependency tracking code
8423 --include-deps enable dependency tracking code
8425 Flavors:
8426 --cygnus assume program is part of Cygnus-style tree
8427 --foreign set strictness to foreign
8428 --gnits set strictness to gnits
8429 --gnu set strictness to gnu
8431 Library files:
8432 -a, --add-missing add missing standard files to package
8433 --libdir=DIR directory storing library files
8434 -c, --copy with -a, copy missing files (default is symlink)
8435 -f, --force-missing force update of standard files
8437 ";
8438 Automake::ChannelDefs::usage;
8440 print "\nFiles automatically distributed if found " .
8441 "(always):\n";
8442 print_autodist_files @common_files;
8443 print "\nFiles automatically distributed if found " .
8444 "(under certain conditions):\n";
8445 print_autodist_files @common_sometimes;
8447 print '
8448 Report bugs to <@PACKAGE_BUGREPORT@>.
8449 GNU Automake home page: <@PACKAGE_URL@>.
8450 General help using GNU software: <http://www.gnu.org/gethelp/>.
8451 ';
8453 # --help always returns 0 per GNU standards.
8454 exit 0;
8455 }
8458 # &version ()
8459 # -----------
8460 # Print version information
8461 sub version ()
8462 {
8463 print <<EOF;
8464 automake (GNU $PACKAGE) $VERSION
8465 Copyright (C) 2011 Free Software Foundation, Inc.
8466 License GPLv2+: GNU GPL version 2 or later <http://gnu.org/licenses/gpl-2.0.html>
8467 This is free software: you are free to change and redistribute it.
8468 There is NO WARRANTY, to the extent permitted by law.
8470 Written by Tom Tromey <tromey\@redhat.com>
8471 and Alexandre Duret-Lutz <adl\@gnu.org>.
8472 EOF
8473 # --version always returns 0 per GNU standards.
8474 exit 0;
8475 }
8477 ################################################################
8479 # Parse command line.
8480 sub parse_arguments ()
8481 {
8482 # Start off as gnu.
8483 set_strictness ('gnu');
8485 my $cli_where = new Automake::Location;
8486 my %cli_options =
8487 (
8488 'libdir=s' => \$libdir,
8489 'gnu' => sub { set_strictness ('gnu'); },
8490 'gnits' => sub { set_strictness ('gnits'); },
8491 'cygnus' => sub { set_global_option ('cygnus', $cli_where); },
8492 'foreign' => sub { set_strictness ('foreign'); },
8493 'include-deps' => sub { unset_global_option ('no-dependencies'); },
8494 'i|ignore-deps' => sub { set_global_option ('no-dependencies',
8495 $cli_where); },
8496 'no-force' => sub { $force_generation = 0; },
8497 'f|force-missing' => \$force_missing,
8498 'o|output-dir=s' => \$output_directory,
8499 'a|add-missing' => \$add_missing,
8500 'c|copy' => \$copy_missing,
8501 'v|verbose' => sub { setup_channel 'verb', silent => 0; },
8502 'W|warnings=s' => \&parse_warnings,
8503 # These long options (--Werror and --Wno-error) for backward
8504 # compatibility. Use -Werror and -Wno-error today.
8505 'Werror' => sub { parse_warnings 'W', 'error'; },
8506 'Wno-error' => sub { parse_warnings 'W', 'no-error'; },
8507 );
8508 use Getopt::Long;
8509 Getopt::Long::config ("bundling", "pass_through");
8511 # See if --version or --help is used. We want to process these before
8512 # anything else because the GNU Coding Standards require us to
8513 # `exit 0' after processing these options, and we can't guarantee this
8514 # if we treat other options first. (Handling other options first
8515 # could produce error diagnostics, and in this condition it is
8516 # confusing if Automake does `exit 0'.)
8517 my %cli_options_1st_pass =
8518 (
8519 'version' => \&version,
8520 'help' => \&usage,
8521 # Recognize all other options (and their arguments) but do nothing.
8522 map { $_ => sub {} } (keys %cli_options)
8523 );
8524 my @ARGV_backup = @ARGV;
8525 Getopt::Long::GetOptions %cli_options_1st_pass
8526 or exit 1;
8527 @ARGV = @ARGV_backup;
8529 # Now *really* process the options. This time we know that --help
8530 # and --version are not present, but we specify them nonetheless so
8531 # that ambiguous abbreviation are diagnosed.
8532 Getopt::Long::GetOptions %cli_options, 'version' => sub {}, 'help' => sub {}
8533 or exit 1;
8535 if (defined $output_directory)
8536 {
8537 msg 'obsolete', "`--output-dir' is deprecated\n";
8538 }
8539 else
8540 {
8541 # In the next release we'll remove this entirely.
8542 $output_directory = '.';
8543 }
8545 return unless @ARGV;
8547 if ($ARGV[0] =~ /^-./)
8548 {
8549 my %argopts;
8550 for my $k (keys %cli_options)
8551 {
8552 if ($k =~ /(.*)=s$/)
8553 {
8554 map { $argopts{(length ($_) == 1)
8555 ? "-$_" : "--$_" } = 1; } (split (/\|/, $1));
8556 }
8557 }
8558 if ($ARGV[0] eq '--')
8559 {
8560 shift @ARGV;
8561 }
8562 elsif (exists $argopts{$ARGV[0]})
8563 {
8564 fatal ("option `$ARGV[0]' requires an argument\n"
8565 . "Try `$0 --help' for more information.");
8566 }
8567 else
8568 {
8569 fatal ("unrecognized option `$ARGV[0]'.\n"
8570 . "Try `$0 --help' for more information.");
8571 }
8572 }
8574 my $errspec = 0;
8575 foreach my $arg (@ARGV)
8576 {
8577 fatal ("empty argument\nTry `$0 --help' for more information.")
8578 if ($arg eq '');
8580 # Handle $local:$input syntax.
8581 my ($local, @rest) = split (/:/, $arg);
8582 @rest = ("$local.in",) unless @rest;
8583 my $input = locate_am @rest;
8584 if ($input)
8585 {
8586 push @input_files, $input;
8587 $output_files{$input} = join (':', ($local, @rest));
8588 }
8589 else
8590 {
8591 error "no Automake input file found for `$arg'";
8592 $errspec = 1;
8593 }
8594 }
8595 fatal "no input file found among supplied arguments"
8596 if $errspec && ! @input_files;
8597 }
8600 # handle_makefile ($MAKEFILE_IN)
8601 # ------------------------------
8602 # Deal with $MAKEFILE_IN.
8603 sub handle_makefile ($)
8604 {
8605 my ($file) = @_;
8606 ($am_file = $file) =~ s/\.in$//;
8607 if (! -f ($am_file . '.am'))
8608 {
8609 error "`$am_file.am' does not exist";
8610 }
8611 else
8612 {
8613 # Any warning setting now local to this Makefile.am.
8614 dup_channel_setup;
8616 generate_makefile ($am_file . '.am', $file);
8618 # Back out any warning setting.
8619 drop_channel_setup;
8620 }
8621 }
8623 # handle_makefiles_serial ()
8624 # --------------------------
8625 # Deal with all makefiles, without threads.
8626 sub handle_makefiles_serial ()
8627 {
8628 foreach my $file (@input_files)
8629 {
8630 handle_makefile ($file);
8631 }
8632 }
8634 # get_number_of_threads ()
8635 # ------------------------
8636 # Logic for deciding how many worker threads to use.
8637 sub get_number_of_threads
8638 {
8639 my $nthreads = $ENV{'AUTOMAKE_JOBS'} || 0;
8641 $nthreads = 0
8642 unless $nthreads =~ /^[0-9]+$/;
8644 # It doesn't make sense to use more threads than makefiles,
8645 my $max_threads = @input_files;
8647 # but a single worker thread is helpful for exposing bugs.
8648 if ($automake_will_process_aux_dir && $max_threads > 1)
8649 {
8650 $max_threads--;
8651 }
8652 if ($nthreads > $max_threads)
8653 {
8654 $nthreads = $max_threads;
8655 }
8656 return $nthreads;
8657 }
8659 # handle_makefiles_threaded ($NTHREADS)
8660 # -------------------------------------
8661 # Deal with all makefiles, using threads. The general strategy is to
8662 # spawn NTHREADS worker threads, dispatch makefiles to them, and let the
8663 # worker threads push back everything that needs serialization:
8664 # * warning and (normal) error messages, for stable stderr output
8665 # order and content (avoiding duplicates, for example),
8666 # * races when installing aux files (and respective messages),
8667 # * races when collecting aux files for distribution.
8668 #
8669 # The latter requires that the makefile that deals with the aux dir
8670 # files be handled last, done by the master thread.
8671 sub handle_makefiles_threaded ($)
8672 {
8673 my ($nthreads) = @_;
8675 my @queued_input_files = @input_files;
8676 my $last_input_file = undef;
8677 if ($automake_will_process_aux_dir)
8678 {
8679 $last_input_file = pop @queued_input_files;
8680 }
8682 # The file queue distributes all makefiles, the message queues
8683 # collect all serializations needed for respective files.
8684 my $file_queue = Thread::Queue->new;
8685 my %msg_queues;
8686 foreach my $file (@queued_input_files)
8687 {
8688 $msg_queues{$file} = Thread::Queue->new;
8689 }
8691 verb "spawning $nthreads worker threads";
8692 my @threads = (1 .. $nthreads);
8693 foreach my $t (@threads)
8694 {
8695 $t = threads->new (sub
8696 {
8697 while (my $file = $file_queue->dequeue)
8698 {
8699 verb "handling $file";
8700 my $queue = $msg_queues{$file};
8701 setup_channel_queue ($queue, QUEUE_MESSAGE);
8702 $required_conf_file_queue = $queue;
8703 handle_makefile ($file);
8704 $queue->enqueue (undef);
8705 setup_channel_queue (undef, undef);
8706 $required_conf_file_queue = undef;
8707 }
8708 return $exit_code;
8709 });
8710 }
8712 # Queue all normal makefiles.
8713 verb "queuing " . @queued_input_files . " input files";
8714 $file_queue->enqueue (@queued_input_files, (undef) x @threads);
8716 # Collect and process serializations.
8717 foreach my $file (@queued_input_files)
8718 {
8719 verb "dequeuing messages for " . $file;
8720 reset_local_duplicates ();
8721 my $queue = $msg_queues{$file};
8722 while (my $key = $queue->dequeue)
8723 {
8724 if ($key eq QUEUE_MESSAGE)
8725 {
8726 pop_channel_queue ($queue);
8727 }
8728 elsif ($key eq QUEUE_CONF_FILE)
8729 {
8730 require_queued_conf_file ($queue);
8731 }
8732 else
8733 {
8734 prog_error "unexpected key $key";
8735 }
8736 }
8737 }
8739 foreach my $t (@threads)
8740 {
8741 my @exit_thread = $t->join;
8742 $exit_code = $exit_thread[0]
8743 if ($exit_thread[0] > $exit_code);
8744 }
8746 # The master processes the last file.
8747 if ($automake_will_process_aux_dir)
8748 {
8749 verb "processing last input file";
8750 handle_makefile ($last_input_file);
8751 }
8752 }
8754 ################################################################
8756 # Parse the WARNINGS environment variable.
8757 parse_WARNINGS;
8759 # Parse command line.
8760 parse_arguments;
8762 $configure_ac = require_configure_ac;
8764 # Do configure.ac scan only once.
8765 scan_autoconf_files;
8767 if (! @input_files)
8768 {
8769 my $msg = '';
8770 $msg = "\nDid you forget AC_CONFIG_FILES([Makefile]) in $configure_ac?"
8771 if -f 'Makefile.am';
8772 fatal ("no `Makefile.am' found for any configure output$msg");
8773 }
8775 my $nthreads = get_number_of_threads ();
8777 if ($perl_threads && $nthreads >= 1)
8778 {
8779 handle_makefiles_threaded ($nthreads);
8780 }
8781 else
8782 {
8783 handle_makefiles_serial ();
8784 }
8786 exit $exit_code;
8789 ### Setup "GNU" style for perl-mode and cperl-mode.
8790 ## Local Variables:
8791 ## perl-indent-level: 2
8792 ## perl-continued-statement-offset: 2
8793 ## perl-continued-brace-offset: 0
8794 ## perl-brace-offset: 0
8795 ## perl-brace-imaginary-offset: 0
8796 ## perl-label-offset: -2
8797 ## cperl-indent-level: 2
8798 ## cperl-brace-offset: 0
8799 ## cperl-continued-brace-offset: 0
8800 ## cperl-label-offset: -2
8801 ## cperl-extra-newline-before-brace: t
8802 ## cperl-merge-trailing-else: nil
8803 ## cperl-continued-statement-offset: 2
8804 ## End: