| blob | 0460a44d2e8d7b1a62c3688232a53c0e01ddec3e |
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 Free Software Foundation,
11 # 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 3, 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 $ENV{'DJGPP'};
45 }
47 use Automake::Struct;
48 struct (# Short name of the language (c, f77...).
49 'name' => "\$",
50 # Nice name of the language (C, Fortran 77...).
51 'Name' => "\$",
53 # List of configure variables which must be defined.
54 'config_vars' => '@',
56 'ansi' => "\$",
57 # `pure' is `1' or `'. A `pure' language is one where, if
58 # all the files in a directory are of that language, then we
59 # do not require the C compiler or any code to call it.
60 'pure' => "\$",
62 'autodep' => "\$",
64 # Name of the compiling variable (COMPILE).
65 'compiler' => "\$",
66 # Content of the compiling variable.
67 'compile' => "\$",
68 # Flag to require compilation without linking (-c).
69 'compile_flag' => "\$",
70 'extensions' => '@',
71 # A subroutine to compute a list of possible extensions of
72 # the product given the input extensions.
73 # (defaults to a subroutine which returns ('.$(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 dvi exec html include info
253 lib libexec lisp localstate man man1 man2 man3
254 man4 man5 man6 man7 man8 man9 oldinclude pdf
255 pkgdatadir pkgincludedir pkglibdir pkglibexecdir
256 ps sbin 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 Free Software Foundation,
262 # 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;
576 # Keys in this hash are the basenames of files which must depend on
577 # ansi2knr. Values are either the empty string, or the directory in
578 # which the ANSI source file appears; the directory must have a
579 # trailing `/'.
580 my %de_ansi_files;
582 # This keeps track of which extensions we've seen (that we care
583 # about).
584 my %extension_seen;
586 # This is random scratch space for the language finish functions.
587 # Don't randomly overwrite it; examine other uses of keys first.
588 my %language_scratch;
590 # We keep track of which objects need special (per-executable)
591 # handling on a per-language basis.
592 my %lang_specific_files;
594 # This is set when `handle_dist' has finished. Once this happens,
595 # we should no longer push on dist_common.
596 my $handle_dist_run;
598 # Used to store a set of linkers needed to generate the sources currently
599 # under consideration.
600 my %linkers_used;
602 # True if we need `LINK' defined. This is a hack.
603 my $need_link;
605 # Was get_object_extension run?
606 # FIXME: This is a hack. a better switch should be found.
607 my $get_object_extension_was_run;
609 # Record each file processed by make_paragraphs.
610 my %transformed_files;
611 \f
613 ################################################################
615 ## ---------------------------------------------- ##
616 ## Variables not reset by &initialize_per_input. ##
617 ## ---------------------------------------------- ##
619 # Cache each file processed by make_paragraphs.
620 # (This is different from %transformed_files because
621 # %transformed_files is reset for each file while %am_file_cache
622 # it global to the run.)
623 my %am_file_cache;
625 ################################################################
627 # var_SUFFIXES_trigger ($TYPE, $VALUE)
628 # ------------------------------------
629 # This is called by Automake::Variable::define() when SUFFIXES
630 # is defined ($TYPE eq '') or appended ($TYPE eq '+').
631 # The work here needs to be performed as a side-effect of the
632 # macro_define() call because SUFFIXES definitions impact
633 # on $KNOWN_EXTENSIONS_PATTERN which is used used when parsing
634 # the input am file.
635 sub var_SUFFIXES_trigger ($$)
636 {
637 my ($type, $value) = @_;
638 accept_extensions (split (' ', $value));
639 }
640 Automake::Variable::hook ('SUFFIXES', \&var_SUFFIXES_trigger);
642 ################################################################
644 ## --------------------------------- ##
645 ## Forward subroutine declarations. ##
646 ## --------------------------------- ##
647 sub register_language (%);
648 sub file_contents_internal ($$$%);
649 sub define_files_variable ($\@$$);
652 # &initialize_per_input ()
653 # ------------------------
654 # (Re)-Initialize per-Makefile.am variables.
655 sub initialize_per_input ()
656 {
657 reset_local_duplicates ();
659 $am_file_name = undef;
660 $am_relative_dir = undef;
662 $in_file_name = undef;
663 $relative_dir = undef;
664 $topsrcdir = undef;
666 $output_deps_greatest_timestamp = 0;
668 $output_vars = '';
669 $output_all = '';
670 $output_header = '';
671 $output_rules = '';
672 $output_trailer = '';
674 Automake::Options::reset;
675 Automake::Variable::reset;
676 Automake::Rule::reset;
678 @cond_stack = ();
680 @include_stack = ();
682 @all = ();
683 @check = ();
684 @check_tests = ();
686 %clean_files = ();
687 %compile_clean_files = ();
689 # We always include `.'. This isn't strictly correct.
690 %libtool_clean_directories = ('.' => 1);
692 @sources = ();
693 @dist_sources = ();
695 %object_map = ();
696 %object_compilation_map = ();
698 %directory_map = ();
700 %dep_files = ();
702 @dist_targets = ();
704 %known_programs = ();
706 %de_ansi_files = ();
708 %extension_seen = ();
710 %language_scratch = ();
712 %lang_specific_files = ();
714 $handle_dist_run = 0;
716 $need_link = 0;
718 $get_object_extension_was_run = 0;
720 %transformed_files = ();
721 }
724 ################################################################
726 # Initialize our list of languages that are internally supported.
728 # C.
729 register_language ('name' => 'c',
730 'Name' => 'C',
731 'config_vars' => ['CC'],
732 'ansi' => 1,
733 'autodep' => '',
734 'flags' => ['CFLAGS', 'CPPFLAGS'],
735 'ccer' => 'CC',
736 'compiler' => 'COMPILE',
737 'compile' => '$(CC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS) $(CPPFLAGS) $(AM_CFLAGS) $(CFLAGS)',
738 'lder' => 'CCLD',
739 'ld' => '$(CC)',
740 'linker' => 'LINK',
741 'link' => '$(CCLD) $(AM_CFLAGS) $(CFLAGS) $(AM_LDFLAGS) $(LDFLAGS) -o $@',
742 'compile_flag' => '-c',
743 'libtool_tag' => 'CC',
744 'extensions' => ['.c'],
745 '_finish' => \&lang_c_finish);
747 # C++.
748 register_language ('name' => 'cxx',
749 'Name' => 'C++',
750 'config_vars' => ['CXX'],
751 'linker' => 'CXXLINK',
752 'link' => '$(CXXLD) $(AM_CXXFLAGS) $(CXXFLAGS) $(AM_LDFLAGS) $(LDFLAGS) -o $@',
753 'autodep' => 'CXX',
754 'flags' => ['CXXFLAGS', 'CPPFLAGS'],
755 'compile' => '$(CXX) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS) $(CPPFLAGS) $(AM_CXXFLAGS) $(CXXFLAGS)',
756 'ccer' => 'CXX',
757 'compiler' => 'CXXCOMPILE',
758 'compile_flag' => '-c',
759 'output_flag' => '-o',
760 'libtool_tag' => 'CXX',
761 'lder' => 'CXXLD',
762 'ld' => '$(CXX)',
763 'pure' => 1,
764 'extensions' => ['.c++', '.cc', '.cpp', '.cxx', '.C']);
766 # Objective C.
767 register_language ('name' => 'objc',
768 'Name' => 'Objective C',
769 'config_vars' => ['OBJC'],
770 'linker' => 'OBJCLINK',
771 'link' => '$(OBJCLD) $(AM_OBJCFLAGS) $(OBJCFLAGS) $(AM_LDFLAGS) $(LDFLAGS) -o $@',
772 'autodep' => 'OBJC',
773 'flags' => ['OBJCFLAGS', 'CPPFLAGS'],
774 'compile' => '$(OBJC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS) $(CPPFLAGS) $(AM_OBJCFLAGS) $(OBJCFLAGS)',
775 'ccer' => 'OBJC',
776 'compiler' => 'OBJCCOMPILE',
777 'compile_flag' => '-c',
778 'output_flag' => '-o',
779 'lder' => 'OBJCLD',
780 'ld' => '$(OBJC)',
781 'pure' => 1,
782 'extensions' => ['.m']);
784 # Unified Parallel C.
785 register_language ('name' => 'upc',
786 'Name' => 'Unified Parallel C',
787 'config_vars' => ['UPC'],
788 'linker' => 'UPCLINK',
789 'link' => '$(UPCLD) $(AM_UPCFLAGS) $(UPCFLAGS) $(AM_LDFLAGS) $(LDFLAGS) -o $@',
790 'autodep' => 'UPC',
791 'flags' => ['UPCFLAGS', 'CPPFLAGS'],
792 'compile' => '$(UPC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS) $(CPPFLAGS) $(AM_UPCFLAGS) $(UPCFLAGS)',
793 'ccer' => 'UPC',
794 'compiler' => 'UPCCOMPILE',
795 'compile_flag' => '-c',
796 'output_flag' => '-o',
797 'lder' => 'UPCLD',
798 'ld' => '$(UPC)',
799 'pure' => 1,
800 'extensions' => ['.upc']);
802 # Headers.
803 register_language ('name' => 'header',
804 'Name' => 'Header',
805 'extensions' => ['.h', '.H', '.hxx', '.h++', '.hh',
806 '.hpp', '.inc'],
807 # No output.
808 'output_extensions' => sub { return () },
809 # Nothing to do.
810 '_finish' => sub { });
812 # Yacc (C & C++).
813 register_language ('name' => 'yacc',
814 'Name' => 'Yacc',
815 'config_vars' => ['YACC'],
816 'flags' => ['YFLAGS'],
817 'compile' => '$(YACC) $(YFLAGS) $(AM_YFLAGS)',
818 'ccer' => 'YACC',
819 'compiler' => 'YACCCOMPILE',
820 'extensions' => ['.y'],
821 'output_extensions' => sub { (my $ext = $_[0]) =~ tr/y/c/;
822 return ($ext,) },
823 'rule_file' => 'yacc',
824 '_finish' => \&lang_yacc_finish,
825 '_target_hook' => \&lang_yacc_target_hook,
826 'nodist_specific' => 1);
827 register_language ('name' => 'yaccxx',
828 'Name' => 'Yacc (C++)',
829 'config_vars' => ['YACC'],
830 'rule_file' => 'yacc',
831 'flags' => ['YFLAGS'],
832 'ccer' => 'YACC',
833 'compiler' => 'YACCCOMPILE',
834 'compile' => '$(YACC) $(YFLAGS) $(AM_YFLAGS)',
835 'extensions' => ['.y++', '.yy', '.yxx', '.ypp'],
836 'output_extensions' => sub { (my $ext = $_[0]) =~ tr/y/c/;
837 return ($ext,) },
838 '_finish' => \&lang_yacc_finish,
839 '_target_hook' => \&lang_yacc_target_hook,
840 'nodist_specific' => 1);
842 # Lex (C & C++).
843 register_language ('name' => 'lex',
844 'Name' => 'Lex',
845 'config_vars' => ['LEX'],
846 'rule_file' => 'lex',
847 'flags' => ['LFLAGS'],
848 'compile' => '$(LEX) $(LFLAGS) $(AM_LFLAGS)',
849 'ccer' => 'LEX',
850 'compiler' => 'LEXCOMPILE',
851 'extensions' => ['.l'],
852 'output_extensions' => sub { (my $ext = $_[0]) =~ tr/l/c/;
853 return ($ext,) },
854 '_finish' => \&lang_lex_finish,
855 '_target_hook' => \&lang_lex_target_hook,
856 'nodist_specific' => 1);
857 register_language ('name' => 'lexxx',
858 'Name' => 'Lex (C++)',
859 'config_vars' => ['LEX'],
860 'rule_file' => 'lex',
861 'flags' => ['LFLAGS'],
862 'compile' => '$(LEX) $(LFLAGS) $(AM_LFLAGS)',
863 'ccer' => 'LEX',
864 'compiler' => 'LEXCOMPILE',
865 'extensions' => ['.l++', '.ll', '.lxx', '.lpp'],
866 'output_extensions' => sub { (my $ext = $_[0]) =~ tr/l/c/;
867 return ($ext,) },
868 '_finish' => \&lang_lex_finish,
869 '_target_hook' => \&lang_lex_target_hook,
870 'nodist_specific' => 1);
872 # Assembler.
873 register_language ('name' => 'asm',
874 'Name' => 'Assembler',
875 'config_vars' => ['CCAS', 'CCASFLAGS'],
877 'flags' => ['CCASFLAGS'],
878 # Users can set AM_CCASFLAGS to include DEFS, INCLUDES,
879 # or anything else required. They can also set CCAS.
880 # Or simply use Preprocessed Assembler.
881 'compile' => '$(CCAS) $(AM_CCASFLAGS) $(CCASFLAGS)',
882 'ccer' => 'CCAS',
883 'compiler' => 'CCASCOMPILE',
884 'compile_flag' => '-c',
885 'output_flag' => '-o',
886 'extensions' => ['.s'],
888 # With assembly we still use the C linker.
889 '_finish' => \&lang_c_finish);
891 # Preprocessed Assembler.
892 register_language ('name' => 'cppasm',
893 'Name' => 'Preprocessed Assembler',
894 'config_vars' => ['CCAS', 'CCASFLAGS'],
896 'autodep' => 'CCAS',
897 'flags' => ['CCASFLAGS', 'CPPFLAGS'],
898 'compile' => '$(CCAS) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS) $(CPPFLAGS) $(AM_CCASFLAGS) $(CCASFLAGS)',
899 'ccer' => 'CPPAS',
900 'compiler' => 'CPPASCOMPILE',
901 'compile_flag' => '-c',
902 'output_flag' => '-o',
903 'extensions' => ['.S', '.sx'],
905 # With assembly we still use the C linker.
906 '_finish' => \&lang_c_finish);
908 # Fortran 77
909 register_language ('name' => 'f77',
910 'Name' => 'Fortran 77',
911 'config_vars' => ['F77'],
912 'linker' => 'F77LINK',
913 'link' => '$(F77LD) $(AM_FFLAGS) $(FFLAGS) $(AM_LDFLAGS) $(LDFLAGS) -o $@',
914 'flags' => ['FFLAGS'],
915 'compile' => '$(F77) $(AM_FFLAGS) $(FFLAGS)',
916 'ccer' => 'F77',
917 'compiler' => 'F77COMPILE',
918 'compile_flag' => '-c',
919 'output_flag' => '-o',
920 'libtool_tag' => 'F77',
921 'lder' => 'F77LD',
922 'ld' => '$(F77)',
923 'pure' => 1,
924 'extensions' => ['.f', '.for']);
926 # Fortran
927 register_language ('name' => 'fc',
928 'Name' => 'Fortran',
929 'config_vars' => ['FC'],
930 'linker' => 'FCLINK',
931 'link' => '$(FCLD) $(AM_FCFLAGS) $(FCFLAGS) $(AM_LDFLAGS) $(LDFLAGS) -o $@',
932 'flags' => ['FCFLAGS'],
933 'compile' => '$(FC) $(AM_FCFLAGS) $(FCFLAGS)',
934 'ccer' => 'FC',
935 'compiler' => 'FCCOMPILE',
936 'compile_flag' => '-c',
937 'output_flag' => '-o',
938 'libtool_tag' => 'FC',
939 'lder' => 'FCLD',
940 'ld' => '$(FC)',
941 'pure' => 1,
942 'extensions' => ['.f90', '.f95', '.f03', '.f08']);
944 # Preprocessed Fortran
945 register_language ('name' => 'ppfc',
946 'Name' => 'Preprocessed Fortran',
947 'config_vars' => ['FC'],
948 'linker' => 'FCLINK',
949 'link' => '$(FCLD) $(AM_FCFLAGS) $(FCFLAGS) $(AM_LDFLAGS) $(LDFLAGS) -o $@',
950 'lder' => 'FCLD',
951 'ld' => '$(FC)',
952 'flags' => ['FCFLAGS', 'CPPFLAGS'],
953 'ccer' => 'PPFC',
954 'compiler' => 'PPFCCOMPILE',
955 'compile' => '$(FC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS) $(CPPFLAGS) $(AM_FCFLAGS) $(FCFLAGS)',
956 'compile_flag' => '-c',
957 'output_flag' => '-o',
958 'libtool_tag' => 'FC',
959 'pure' => 1,
960 'extensions' => ['.F90','.F95', '.F03', '.F08']);
962 # Preprocessed Fortran 77
963 #
964 # The current support for preprocessing Fortran 77 just involves
965 # passing `$(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS)
966 # $(CPPFLAGS)' as additional flags to the Fortran 77 compiler, since
967 # this is how GNU Make does it; see the `GNU Make Manual, Edition 0.51
968 # for `make' Version 3.76 Beta' (specifically, from info file
969 # `(make)Catalogue of Rules').
970 #
971 # A better approach would be to write an Autoconf test
972 # (i.e. AC_PROG_FPP) for a Fortran 77 preprocessor, because not all
973 # Fortran 77 compilers know how to do preprocessing. The Autoconf
974 # macro AC_PROG_FPP should test the Fortran 77 compiler first for
975 # preprocessing capabilities, and then fall back on cpp (if cpp were
976 # available).
977 register_language ('name' => 'ppf77',
978 'Name' => 'Preprocessed Fortran 77',
979 'config_vars' => ['F77'],
980 'linker' => 'F77LINK',
981 'link' => '$(F77LD) $(AM_FFLAGS) $(FFLAGS) $(AM_LDFLAGS) $(LDFLAGS) -o $@',
982 'lder' => 'F77LD',
983 'ld' => '$(F77)',
984 'flags' => ['FFLAGS', 'CPPFLAGS'],
985 'ccer' => 'PPF77',
986 'compiler' => 'PPF77COMPILE',
987 'compile' => '$(F77) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS) $(CPPFLAGS) $(AM_FFLAGS) $(FFLAGS)',
988 'compile_flag' => '-c',
989 'output_flag' => '-o',
990 'libtool_tag' => 'F77',
991 'pure' => 1,
992 'extensions' => ['.F']);
994 # Ratfor.
995 register_language ('name' => 'ratfor',
996 'Name' => 'Ratfor',
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' => ['RFLAGS', 'FFLAGS'],
1003 # FIXME also FFLAGS.
1004 'compile' => '$(F77) $(AM_FFLAGS) $(FFLAGS) $(AM_RFLAGS) $(RFLAGS)',
1005 'ccer' => 'F77',
1006 'compiler' => 'RCOMPILE',
1007 'compile_flag' => '-c',
1008 'output_flag' => '-o',
1009 'libtool_tag' => 'F77',
1010 'pure' => 1,
1011 'extensions' => ['.r']);
1013 # Java via gcj.
1014 register_language ('name' => 'java',
1015 'Name' => 'Java',
1016 'config_vars' => ['GCJ'],
1017 'linker' => 'GCJLINK',
1018 'link' => '$(GCJLD) $(AM_GCJFLAGS) $(GCJFLAGS) $(AM_LDFLAGS) $(LDFLAGS) -o $@',
1019 'autodep' => 'GCJ',
1020 'flags' => ['GCJFLAGS'],
1021 'compile' => '$(GCJ) $(AM_GCJFLAGS) $(GCJFLAGS)',
1022 'ccer' => 'GCJ',
1023 'compiler' => 'GCJCOMPILE',
1024 'compile_flag' => '-c',
1025 'output_flag' => '-o',
1026 'libtool_tag' => 'GCJ',
1027 'lder' => 'GCJLD',
1028 'ld' => '$(GCJ)',
1029 'pure' => 1,
1030 'extensions' => ['.java', '.class', '.zip', '.jar']);
1032 ################################################################
1034 # Error reporting functions.
1036 # err_am ($MESSAGE, [%OPTIONS])
1037 # -----------------------------
1038 # Uncategorized errors about the current Makefile.am.
1039 sub err_am ($;%)
1040 {
1041 msg_am ('error', @_);
1042 }
1044 # err_ac ($MESSAGE, [%OPTIONS])
1045 # -----------------------------
1046 # Uncategorized errors about configure.ac.
1047 sub err_ac ($;%)
1048 {
1049 msg_ac ('error', @_);
1050 }
1052 # msg_am ($CHANNEL, $MESSAGE, [%OPTIONS])
1053 # ---------------------------------------
1054 # Messages about about the current Makefile.am.
1055 sub msg_am ($$;%)
1056 {
1057 my ($channel, $msg, %opts) = @_;
1058 msg $channel, "${am_file}.am", $msg, %opts;
1059 }
1061 # msg_ac ($CHANNEL, $MESSAGE, [%OPTIONS])
1062 # ---------------------------------------
1063 # Messages about about configure.ac.
1064 sub msg_ac ($$;%)
1065 {
1066 my ($channel, $msg, %opts) = @_;
1067 msg $channel, $configure_ac, $msg, %opts;
1068 }
1070 ################################################################
1072 # subst ($TEXT)
1073 # -------------
1074 # Return a configure-style substitution using the indicated text.
1075 # We do this to avoid having the substitutions directly in automake.in;
1076 # when we do that they are sometimes removed and this causes confusion
1077 # and bugs.
1078 sub subst ($)
1079 {
1080 my ($text) = @_;
1081 return '@' . $text . '@';
1082 }
1084 ################################################################
1087 # $BACKPATH
1088 # &backname ($REL-DIR)
1089 # --------------------
1090 # If I `cd $REL-DIR', then to come back, I should `cd $BACKPATH'.
1091 # For instance `src/foo' => `../..'.
1092 # Works with non strictly increasing paths, i.e., `src/../lib' => `..'.
1093 sub backname ($)
1094 {
1095 my ($file) = @_;
1096 my @res;
1097 foreach (split (/\//, $file))
1098 {
1099 next if $_ eq '.' || $_ eq '';
1100 if ($_ eq '..')
1101 {
1102 pop @res
1103 or prog_error ("trying to reverse path `$file' pointing outside tree");
1104 }
1105 else
1106 {
1107 push (@res, '..');
1108 }
1109 }
1110 return join ('/', @res) || '.';
1111 }
1113 ################################################################
1115 # `silent-rules' mode handling functions.
1117 # verbose_var (NAME)
1118 # ------------------
1119 # The public variable stem used to implement `silent-rules'.
1120 sub verbose_var ($)
1121 {
1122 my ($name) = @_;
1123 return 'AM_V_' . $name;
1124 }
1126 # verbose_private_var (NAME)
1127 # --------------------------
1128 # The naming policy for the private variables for `silent-rules'.
1129 sub verbose_private_var ($)
1130 {
1131 my ($name) = @_;
1132 return 'am__v_' . $name;
1133 }
1135 # define_verbose_var (NAME, VAL)
1136 # ------------------------------
1137 # For `silent-rules' mode, setup VAR and dispatcher, to expand to VAL if silent.
1138 sub define_verbose_var ($$)
1139 {
1140 my ($name, $val) = @_;
1141 my $var = verbose_var ($name);
1142 my $pvar = verbose_private_var ($name);
1143 if (option 'silent-rules')
1144 {
1145 # Using `$V' instead of `$(V)' breaks IRIX make.
1146 define_variable ($var, '$(' . $pvar . '_$(V))', INTERNAL);
1147 define_variable ($pvar . '_', $val, INTERNAL);
1148 define_variable ($pvar . '_0', $val, INTERNAL);
1149 }
1150 }
1152 # Above should not be needed in the general automake code.
1154 # verbose_flag (NAME)
1155 # -------------------
1156 # Contents of %VERBOSE%: variable to expand before rule command.
1157 sub verbose_flag ($)
1158 {
1159 my ($name) = @_;
1160 return '$(' . verbose_var ($name) . ')'
1161 if (option 'silent-rules');
1162 return '';
1163 }
1165 # silent_flag
1166 # -----------
1167 # Contents of %SILENT%: variable to expand to `@' when silent.
1168 sub silent_flag ()
1169 {
1170 return verbose_flag ('at');
1171 }
1173 # define_verbose_tagvar (NAME)
1174 # ----------------------------
1175 # Engage the needed `silent-rules' machinery for tag NAME.
1176 sub define_verbose_tagvar ($)
1177 {
1178 my ($name) = @_;
1179 if (option 'silent-rules')
1180 {
1181 define_verbose_var ($name, '@echo " '. $name . ' ' x (6 - length ($name)) . '" $@;');
1182 define_verbose_var ('at', '@');
1183 }
1184 }
1186 # define_verbose_libtool
1187 # ----------------------
1188 # Engage the needed `silent-rules' machinery for `libtool --silent'.
1189 sub define_verbose_libtool ()
1190 {
1191 define_verbose_var ('lt', '--silent');
1192 return verbose_flag ('lt');
1193 }
1196 ################################################################
1199 # Handle AUTOMAKE_OPTIONS variable. Return 1 on error, 0 otherwise.
1200 sub handle_options
1201 {
1202 my $var = var ('AUTOMAKE_OPTIONS');
1203 if ($var)
1204 {
1205 if ($var->has_conditional_contents)
1206 {
1207 msg_var ('unsupported', $var,
1208 "`AUTOMAKE_OPTIONS' cannot have conditional contents");
1209 }
1210 foreach my $locvals ($var->value_as_list_recursive (cond_filter => TRUE,
1211 location => 1))
1212 {
1213 my ($loc, $value) = @$locvals;
1214 return 1 if (process_option_list ($loc, $value))
1215 }
1216 }
1218 # Override portability-recursive warning.
1219 switch_warning ('no-portability-recursive')
1220 if option 'silent-rules';
1222 if ($strictness == GNITS)
1223 {
1224 set_option ('readme-alpha', INTERNAL);
1225 set_option ('std-options', INTERNAL);
1226 set_option ('check-news', INTERNAL);
1227 }
1229 return 0;
1230 }
1232 # shadow_unconditionally ($varname, $where)
1233 # -----------------------------------------
1234 # Return a $(variable) that contains all possible values
1235 # $varname can take.
1236 # If the VAR wasn't defined conditionally, return $(VAR).
1237 # Otherwise we create a am__VAR_DIST variable which contains
1238 # all possible values, and return $(am__VAR_DIST).
1239 sub shadow_unconditionally ($$)
1240 {
1241 my ($varname, $where) = @_;
1242 my $var = var $varname;
1243 if ($var->has_conditional_contents)
1244 {
1245 $varname = "am__${varname}_DIST";
1246 my @files = uniq ($var->value_as_list_recursive);
1247 define_pretty_variable ($varname, TRUE, $where, @files);
1248 }
1249 return "\$($varname)"
1250 }
1252 # get_object_extension ($EXTENSION)
1253 # ---------------------------------
1254 # Prefix $EXTENSION with $U if ansi2knr is in use.
1255 sub get_object_extension ($)
1256 {
1257 my ($extension) = @_;
1259 # Check for automatic de-ANSI-fication.
1260 $extension = '$U' . $extension
1261 if option 'ansi2knr';
1263 $get_object_extension_was_run = 1;
1265 return $extension;
1266 }
1268 # check_user_variables (@LIST)
1269 # ----------------------------
1270 # Make sure each variable VAR in @LIST does not exist, suggest using AM_VAR
1271 # otherwise.
1272 sub check_user_variables (@)
1273 {
1274 my @dont_override = @_;
1275 foreach my $flag (@dont_override)
1276 {
1277 my $var = var $flag;
1278 if ($var)
1279 {
1280 for my $cond ($var->conditions->conds)
1281 {
1282 if ($var->rdef ($cond)->owner == VAR_MAKEFILE)
1283 {
1284 msg_cond_var ('gnu', $cond, $flag,
1285 "`$flag' is a user variable, "
1286 . "you should not override it;\n"
1287 . "use `AM_$flag' instead.");
1288 }
1289 }
1290 }
1291 }
1292 }
1294 # Call finish function for each language that was used.
1295 sub handle_languages
1296 {
1297 if (! option 'no-dependencies')
1298 {
1299 # Include auto-dep code. Don't include it if DEP_FILES would
1300 # be empty.
1301 if (&saw_sources_p (0) && keys %dep_files)
1302 {
1303 # Set location of depcomp.
1304 &define_variable ('depcomp',
1305 "\$(SHELL) $am_config_aux_dir/depcomp",
1306 INTERNAL);
1307 &define_variable ('am__depfiles_maybe', 'depfiles', INTERNAL);
1309 require_conf_file ("$am_file.am", FOREIGN, 'depcomp');
1311 my @deplist = sort keys %dep_files;
1312 # Generate each `include' individually. Irix 6 make will
1313 # not properly include several files resulting from a
1314 # variable expansion; generating many separate includes
1315 # seems safest.
1316 $output_rules .= "\n";
1317 foreach my $iter (@deplist)
1318 {
1319 $output_rules .= (subst ('AMDEP_TRUE')
1320 . subst ('am__include')
1321 . ' '
1322 . subst ('am__quote')
1323 . $iter
1324 . subst ('am__quote')
1325 . "\n");
1326 }
1328 # Compute the set of directories to remove in distclean-depend.
1329 my @depdirs = uniq (map { dirname ($_) } @deplist);
1330 $output_rules .= &file_contents ('depend',
1331 new Automake::Location,
1332 DEPDIRS => "@depdirs");
1333 }
1334 }
1335 else
1336 {
1337 &define_variable ('depcomp', '', INTERNAL);
1338 &define_variable ('am__depfiles_maybe', '', INTERNAL);
1339 }
1341 my %done;
1343 # Is the c linker needed?
1344 my $needs_c = 0;
1345 foreach my $ext (sort keys %extension_seen)
1346 {
1347 next unless $extension_map{$ext};
1349 my $lang = $languages{$extension_map{$ext}};
1351 my $rule_file = $lang->rule_file || 'depend2';
1353 # Get information on $LANG.
1354 my $pfx = $lang->autodep;
1355 my $fpfx = ($pfx eq '') ? 'CC' : $pfx;
1357 my ($AMDEP, $FASTDEP) =
1358 (option 'no-dependencies' || $lang->autodep eq 'no')
1359 ? ('FALSE', 'FALSE') : ('AMDEP', "am__fastdep$fpfx");
1361 my $verbose = verbose_flag ($lang->ccer || 'GEN');
1362 my $silent = silent_flag ();
1364 my %transform = ('EXT' => $ext,
1365 'PFX' => $pfx,
1366 'FPFX' => $fpfx,
1367 'AMDEP' => $AMDEP,
1368 'FASTDEP' => $FASTDEP,
1369 '-c' => $lang->compile_flag || '',
1370 # These are not used, but they need to be defined
1371 # so &transform do not complain.
1372 SUBDIROBJ => 0,
1373 'DERIVED-EXT' => 'BUG',
1374 DIST_SOURCE => 1,
1375 VERBOSE => $verbose,
1376 SILENT => $silent,
1377 );
1379 # Generate the appropriate rules for this extension.
1380 if (((! option 'no-dependencies') && $lang->autodep ne 'no')
1381 || defined $lang->compile)
1382 {
1383 # Some C compilers don't support -c -o. Use it only if really
1384 # needed.
1385 my $output_flag = $lang->output_flag || '';
1386 $output_flag = '-o'
1387 if (! $output_flag
1388 && $lang->name eq 'c'
1389 && option 'subdir-objects');
1391 # Compute a possible derived extension.
1392 # This is not used by depend2.am.
1393 my $der_ext = (&{$lang->output_extensions} ($ext))[0];
1395 # When we output an inference rule like `.c.o:' we
1396 # have two cases to consider: either subdir-objects
1397 # is used, or it is not.
1398 #
1399 # In the latter case the rule is used to build objects
1400 # in the current directory, and dependencies always
1401 # go into `./$(DEPDIR)/'. We can hard-code this value.
1402 #
1403 # In the former case the rule can be used to build
1404 # objects in sub-directories too. Dependencies should
1405 # go into the appropriate sub-directories, e.g.,
1406 # `sub/$(DEPDIR)/'. The value of this directory
1407 # needs to be computed on-the-fly.
1408 #
1409 # DEPBASE holds the name of this directory, plus the
1410 # basename part of the object file (extensions Po, TPo,
1411 # Plo, TPlo will be added later as appropriate). It is
1412 # either hardcoded, or a shell variable (`$depbase') that
1413 # will be computed by the rule.
1414 my $depbase =
1415 option ('subdir-objects') ? '$$depbase' : '$(DEPDIR)/$*';
1416 $output_rules .=
1417 file_contents ($rule_file,
1418 new Automake::Location,
1419 %transform,
1420 GENERIC => 1,
1422 'DERIVED-EXT' => $der_ext,
1424 DEPBASE => $depbase,
1425 BASE => '$*',
1426 SOURCE => '$<',
1427 SOURCEFLAG => $sourceflags{$ext} || '',
1428 OBJ => '$@',
1429 OBJOBJ => '$@',
1430 LTOBJ => '$@',
1432 COMPILE => '$(' . $lang->compiler . ')',
1433 LTCOMPILE => '$(LT' . $lang->compiler . ')',
1434 -o => $output_flag,
1435 SUBDIROBJ => !! option 'subdir-objects');
1436 }
1438 # Now include code for each specially handled object with this
1439 # language.
1440 my %seen_files = ();
1441 foreach my $file (@{$lang_specific_files{$lang->name}})
1442 {
1443 my ($derived, $source, $obj, $myext, $srcext, %file_transform) = @$file;
1445 # We might see a given object twice, for instance if it is
1446 # used under different conditions.
1447 next if defined $seen_files{$obj};
1448 $seen_files{$obj} = 1;
1450 prog_error ("found " . $lang->name .
1451 " in handle_languages, but compiler not defined")
1452 unless defined $lang->compile;
1454 my $obj_compile = $lang->compile;
1456 # Rewrite each occurrence of `AM_$flag' in the compile
1457 # rule into `${derived}_$flag' if it exists.
1458 for my $flag (@{$lang->flags})
1459 {
1460 my $val = "${derived}_$flag";
1461 $obj_compile =~ s/\(AM_$flag\)/\($val\)/
1462 if set_seen ($val);
1463 }
1465 my $libtool_tag = '';
1466 if ($lang->libtool_tag && exists $libtool_tags{$lang->libtool_tag})
1467 {
1468 $libtool_tag = '--tag=' . $lang->libtool_tag . ' '
1469 }
1471 my $ptltflags = "${derived}_LIBTOOLFLAGS";
1472 $ptltflags = 'AM_LIBTOOLFLAGS' unless set_seen $ptltflags;
1474 my $ltverbose = define_verbose_libtool ();
1475 my $obj_ltcompile =
1476 "\$(LIBTOOL) $ltverbose $libtool_tag\$($ptltflags) \$(LIBTOOLFLAGS) "
1477 . "--mode=compile $obj_compile";
1479 # We _need_ `-o' for per object rules.
1480 my $output_flag = $lang->output_flag || '-o';
1482 my $depbase = dirname ($obj);
1483 $depbase = ''
1484 if $depbase eq '.';
1485 $depbase .= '/'
1486 unless $depbase eq '';
1487 $depbase .= '$(DEPDIR)/' . basename ($obj);
1489 # Support for deansified files in subdirectories is ugly
1490 # enough to deserve an explanation.
1491 #
1492 # A Note about normal ansi2knr processing first. On
1493 #
1494 # AUTOMAKE_OPTIONS = ansi2knr
1495 # bin_PROGRAMS = foo
1496 # foo_SOURCES = foo.c
1497 #
1498 # we generate rules similar to:
1499 #
1500 # foo: foo$U.o; link ...
1501 # foo$U.o: foo$U.c; compile ...
1502 # foo_.c: foo.c; ansi2knr ...
1503 #
1504 # this is fairly compact, and will call ansi2knr depending
1505 # on the value of $U (`' or `_').
1506 #
1507 # It's harder with subdir sources. On
1508 #
1509 # AUTOMAKE_OPTIONS = ansi2knr
1510 # bin_PROGRAMS = foo
1511 # foo_SOURCES = sub/foo.c
1512 #
1513 # we have to create foo_.c in the current directory.
1514 # (Unless the user asks 'subdir-objects'.) This is important
1515 # in case the same file (`foo.c') is compiled from other
1516 # directories with different cpp options: foo_.c would
1517 # be preprocessed for only one set of options if it were
1518 # put in the subdirectory.
1519 #
1520 # Because foo$U.o must be built from either foo_.c or
1521 # sub/foo.c we can't be as concise as in the first example.
1522 # Instead we output
1523 #
1524 # foo: foo$U.o; link ...
1525 # foo_.o: foo_.c; compile ...
1526 # foo.o: sub/foo.c; compile ...
1527 # foo_.c: foo.c; ansi2knr ...
1528 #
1529 # This is why we'll now transform $rule_file twice
1530 # if we detect this case.
1531 # A first time we output the compile rule with `$U'
1532 # replaced by `_' and the source directory removed,
1533 # and another time we simply remove `$U'.
1534 #
1535 # Note that at this point $source (as computed by
1536 # &handle_single_transform) is `sub/foo$U.c'.
1537 # This can be confusing: it can be used as-is when
1538 # subdir-objects is set, otherwise you have to know
1539 # it really means `foo_.c' or `sub/foo.c'.
1540 my $objdir = dirname ($obj);
1541 my $srcdir = dirname ($source);
1542 if ($lang->ansi && $obj =~ /\$U/)
1543 {
1544 prog_error "`$obj' contains \$U, but `$source' doesn't."
1545 if $source !~ /\$U/;
1547 (my $source_ = $source) =~ s/\$U/_/g;
1548 # Output an additional rule if _.c and .c are not in
1549 # the same directory. (_.c is always in $objdir.)
1550 if ($objdir ne $srcdir)
1551 {
1552 (my $obj_ = $obj) =~ s/\$U/_/g;
1553 (my $depbase_ = $depbase) =~ s/\$U/_/g;
1554 $source_ = basename ($source_);
1556 $output_rules .=
1557 file_contents ($rule_file,
1558 new Automake::Location,
1559 %transform,
1560 GENERIC => 0,
1562 DEPBASE => $depbase_,
1563 BASE => $obj_,
1564 SOURCE => $source_,
1565 SOURCEFLAG => $sourceflags{$srcext} || '',
1566 OBJ => "$obj_$myext",
1567 OBJOBJ => "$obj_.obj",
1568 LTOBJ => "$obj_.lo",
1570 COMPILE => $obj_compile,
1571 LTCOMPILE => $obj_ltcompile,
1572 -o => $output_flag,
1573 %file_transform);
1574 $obj =~ s/\$U//g;
1575 $depbase =~ s/\$U//g;
1576 $source =~ s/\$U//g;
1577 }
1578 }
1580 $output_rules .=
1581 file_contents ($rule_file,
1582 new Automake::Location,
1583 %transform,
1584 GENERIC => 0,
1586 DEPBASE => $depbase,
1587 BASE => $obj,
1588 SOURCE => $source,
1589 SOURCEFLAG => $sourceflags{$srcext} || '',
1590 # Use $myext and not `.o' here, in case
1591 # we are actually building a new source
1592 # file -- e.g. via yacc.
1593 OBJ => "$obj$myext",
1594 OBJOBJ => "$obj.obj",
1595 LTOBJ => "$obj.lo",
1597 VERBOSE => $verbose,
1598 SILENT => $silent,
1599 COMPILE => $obj_compile,
1600 LTCOMPILE => $obj_ltcompile,
1601 -o => $output_flag,
1602 %file_transform);
1603 }
1605 # The rest of the loop is done once per language.
1606 next if defined $done{$lang};
1607 $done{$lang} = 1;
1609 # Load the language dependent Makefile chunks.
1610 my %lang = map { uc ($_) => 0 } keys %languages;
1611 $lang{uc ($lang->name)} = 1;
1612 $output_rules .= file_contents ('lang-compile',
1613 new Automake::Location,
1614 %transform, %lang);
1616 # If the source to a program consists entirely of code from a
1617 # `pure' language, for instance C++ or Fortran 77, then we
1618 # don't need the C compiler code. However if we run into
1619 # something unusual then we do generate the C code. There are
1620 # probably corner cases here that do not work properly.
1621 # People linking Java code to Fortran code deserve pain.
1622 $needs_c ||= ! $lang->pure;
1624 define_compiler_variable ($lang)
1625 if ($lang->compile);
1627 define_linker_variable ($lang)
1628 if ($lang->link);
1630 require_variables ("$am_file.am", $lang->Name . " source seen",
1631 TRUE, @{$lang->config_vars});
1633 # Call the finisher.
1634 $lang->finish;
1636 # Flags listed in `->flags' are user variables (per GNU Standards),
1637 # they should not be overridden in the Makefile...
1638 my @dont_override = @{$lang->flags};
1639 # ... and so is LDFLAGS.
1640 push @dont_override, 'LDFLAGS' if $lang->link;
1642 check_user_variables @dont_override;
1643 }
1645 # If the project is entirely C++ or entirely Fortran 77 (i.e., 1
1646 # suffix rule was learned), don't bother with the C stuff. But if
1647 # anything else creeps in, then use it.
1648 $needs_c = 1
1649 if $need_link || suffix_rules_count > 1;
1651 if ($needs_c)
1652 {
1653 &define_compiler_variable ($languages{'c'})
1654 unless defined $done{$languages{'c'}};
1655 define_linker_variable ($languages{'c'});
1656 }
1658 # Always provide the user with `AM_V_GEN' for `silent-rules' mode.
1659 define_verbose_tagvar ('GEN');
1660 }
1663 # append_exeext { PREDICATE } $MACRO
1664 # ----------------------------------
1665 # Append $(EXEEXT) to each filename in $F appearing in the Makefile
1666 # variable $MACRO if &PREDICATE($F) is true. @substitutions@ are
1667 # ignored.
1668 #
1669 # This is typically used on all filenames of *_PROGRAMS, and filenames
1670 # of TESTS that are programs.
1671 sub append_exeext (&$)
1672 {
1673 my ($pred, $macro) = @_;
1675 transform_variable_recursively
1676 ($macro, $macro, 'am__EXEEXT', 0, INTERNAL,
1677 sub {
1678 my ($subvar, $val, $cond, $full_cond) = @_;
1679 # Append $(EXEEXT) unless the user did it already, or it's a
1680 # @substitution@.
1681 $val .= '$(EXEEXT)'
1682 if $val !~ /(?:\$\(EXEEXT\)$|^[@]\w+[@]$)/ && &$pred ($val);
1683 return $val;
1684 });
1685 }
1688 # Check to make sure a source defined in LIBOBJS is not explicitly
1689 # mentioned. This is a separate function (as opposed to being inlined
1690 # in handle_source_transform) because it isn't always appropriate to
1691 # do this check.
1692 sub check_libobjs_sources
1693 {
1694 my ($one_file, $unxformed) = @_;
1696 foreach my $prefix ('', 'EXTRA_', 'dist_', 'nodist_',
1697 'dist_EXTRA_', 'nodist_EXTRA_')
1698 {
1699 my @files;
1700 my $varname = $prefix . $one_file . '_SOURCES';
1701 my $var = var ($varname);
1702 if ($var)
1703 {
1704 @files = $var->value_as_list_recursive;
1705 }
1706 elsif ($prefix eq '')
1707 {
1708 @files = ($unxformed . '.c');
1709 }
1710 else
1711 {
1712 next;
1713 }
1715 foreach my $file (@files)
1716 {
1717 err_var ($prefix . $one_file . '_SOURCES',
1718 "automatically discovered file `$file' should not" .
1719 " be explicitly mentioned")
1720 if defined $libsources{$file};
1721 }
1722 }
1723 }
1726 # @OBJECTS
1727 # handle_single_transform ($VAR, $TOPPARENT, $DERIVED, $OBJ, $FILE, %TRANSFORM)
1728 # -----------------------------------------------------------------------------
1729 # Does much of the actual work for handle_source_transform.
1730 # Arguments are:
1731 # $VAR is the name of the variable that the source filenames come from
1732 # $TOPPARENT is the name of the _SOURCES variable which is being processed
1733 # $DERIVED is the name of resulting executable or library
1734 # $OBJ is the object extension (e.g., `$U.lo')
1735 # $FILE the source file to transform
1736 # %TRANSFORM contains extras arguments to pass to file_contents
1737 # when producing explicit rules
1738 # Result is a list of the names of objects
1739 # %linkers_used will be updated with any linkers needed
1740 sub handle_single_transform ($$$$$%)
1741 {
1742 my ($var, $topparent, $derived, $obj, $_file, %transform) = @_;
1743 my @files = ($_file);
1744 my @result = ();
1745 my $nonansi_obj = $obj;
1746 $nonansi_obj =~ s/\$U//g;
1748 # Turn sources into objects. We use a while loop like this
1749 # because we might add to @files in the loop.
1750 while (scalar @files > 0)
1751 {
1752 $_ = shift @files;
1754 # Configure substitutions in _SOURCES variables are errors.
1755 if (/^\@.*\@$/)
1756 {
1757 my $parent_msg = '';
1758 $parent_msg = "\nand is referred to from `$topparent'"
1759 if $topparent ne $var->name;
1760 err_var ($var,
1761 "`" . $var->name . "' includes configure substitution `$_'"
1762 . $parent_msg . ";\nconfigure " .
1763 "substitutions are not allowed in _SOURCES variables");
1764 next;
1765 }
1767 # If the source file is in a subdirectory then the `.o' is put
1768 # into the current directory, unless the subdir-objects option
1769 # is in effect.
1771 # Split file name into base and extension.
1772 next if ! /^(?:(.*)\/)?([^\/]*)($KNOWN_EXTENSIONS_PATTERN)$/;
1773 my $full = $_;
1774 my $directory = $1 || '';
1775 my $base = $2;
1776 my $extension = $3;
1778 # We must generate a rule for the object if it requires its own flags.
1779 my $renamed = 0;
1780 my ($linker, $object);
1782 # This records whether we've seen a derived source file (e.g.
1783 # yacc output).
1784 my $derived_source = 0;
1786 # This holds the `aggregate context' of the file we are
1787 # currently examining. If the file is compiled with
1788 # per-object flags, then it will be the name of the object.
1789 # Otherwise it will be `AM'. This is used by the target hook
1790 # language function.
1791 my $aggregate = 'AM';
1793 $extension = &derive_suffix ($extension, $nonansi_obj);
1794 my $lang;
1795 if ($extension_map{$extension} &&
1796 ($lang = $languages{$extension_map{$extension}}))
1797 {
1798 # Found the language, so see what it says.
1799 &saw_extension ($extension);
1801 # Do we have per-executable flags for this executable?
1802 my $have_per_exec_flags = 0;
1803 my @peflags = @{$lang->flags};
1804 push @peflags, 'LIBTOOLFLAGS' if $nonansi_obj eq '.lo';
1805 foreach my $flag (@peflags)
1806 {
1807 if (set_seen ("${derived}_$flag"))
1808 {
1809 $have_per_exec_flags = 1;
1810 last;
1811 }
1812 }
1814 # Note: computed subr call. The language rewrite function
1815 # should return one of the LANG_* constants. It could
1816 # also return a list whose first value is such a constant
1817 # and whose second value is a new source extension which
1818 # should be applied. This means this particular language
1819 # generates another source file which we must then process
1820 # further.
1821 my $subr = \&{'lang_' . $lang->name . '_rewrite'};
1822 my ($r, $source_extension)
1823 = &$subr ($directory, $base, $extension,
1824 $nonansi_obj, $have_per_exec_flags, $var);
1825 # Skip this entry if we were asked not to process it.
1826 next if $r == LANG_IGNORE;
1828 # Now extract linker and other info.
1829 $linker = $lang->linker;
1831 my $this_obj_ext;
1832 if (defined $source_extension)
1833 {
1834 $this_obj_ext = $source_extension;
1835 $derived_source = 1;
1836 }
1837 elsif ($lang->ansi)
1838 {
1839 $this_obj_ext = $obj;
1840 }
1841 else
1842 {
1843 $this_obj_ext = $nonansi_obj;
1844 }
1845 $object = $base . $this_obj_ext;
1847 if ($have_per_exec_flags)
1848 {
1849 # We have a per-executable flag in effect for this
1850 # object. In this case we rewrite the object's
1851 # name to ensure it is unique.
1853 # We choose the name `DERIVED_OBJECT' to ensure
1854 # (1) uniqueness, and (2) continuity between
1855 # invocations. However, this will result in a
1856 # name that is too long for losing systems, in
1857 # some situations. So we provide _SHORTNAME to
1858 # override.
1860 my $dname = $derived;
1861 my $var = var ($derived . '_SHORTNAME');
1862 if ($var)
1863 {
1864 # FIXME: should use the same Condition as
1865 # the _SOURCES variable. But this is really
1866 # silly overkill -- nobody should have
1867 # conditional shortnames.
1868 $dname = $var->variable_value;
1869 }
1870 $object = $dname . '-' . $object;
1872 prog_error ($lang->name . " flags defined without compiler")
1873 if ! defined $lang->compile;
1875 $renamed = 1;
1876 }
1878 # If rewrite said it was ok, put the object into a
1879 # subdir.
1880 if ($r == LANG_SUBDIR && $directory ne '')
1881 {
1882 $object = $directory . '/' . $object;
1883 }
1885 # If the object file has been renamed (because per-target
1886 # flags are used) we cannot compile the file with an
1887 # inference rule: we need an explicit rule.
1888 #
1889 # If the source is in a subdirectory and the object is in
1890 # the current directory, we also need an explicit rule.
1891 #
1892 # If both source and object files are in a subdirectory
1893 # (this happens when the subdir-objects option is used),
1894 # then the inference will work.
1895 #
1896 # The latter case deserves a historical note. When the
1897 # subdir-objects option was added on 1999-04-11 it was
1898 # thought that inferences rules would work for
1899 # subdirectory objects too. Later, on 1999-11-22,
1900 # automake was changed to output explicit rules even for
1901 # subdir-objects. Nobody remembers why, but this occurred
1902 # soon after the merge of the user-dep-gen-branch so it
1903 # might be related. In late 2003 people complained about
1904 # the size of the generated Makefile.ins (libgcj, with
1905 # 2200+ subdir objects was reported to have a 9MB
1906 # Makefile), so we now rely on inference rules again.
1907 # Maybe we'll run across the same issue as in the past,
1908 # but at least this time we can document it. However since
1909 # dependency tracking has evolved it is possible that
1910 # our old problem no longer exists.
1911 # Using inference rules for subdir-objects has been tested
1912 # with GNU make, Solaris make, Ultrix make, BSD make,
1913 # HP-UX make, and OSF1 make successfully.
1914 if ($renamed
1915 || ($directory ne '' && ! option 'subdir-objects')
1916 # We must also use specific rules for a nodist_ source
1917 # if its language requests it.
1918 || ($lang->nodist_specific && ! $transform{'DIST_SOURCE'}))
1919 {
1920 my $obj_sans_ext = substr ($object, 0,
1921 - length ($this_obj_ext));
1922 my $full_ansi = $full;
1923 if ($lang->ansi && option 'ansi2knr')
1924 {
1925 $full_ansi =~ s/$KNOWN_EXTENSIONS_PATTERN$/\$U$&/;
1926 $obj_sans_ext .= '$U';
1927 }
1929 my @specifics = ($full_ansi, $obj_sans_ext,
1930 # Only use $this_obj_ext in the derived
1931 # source case because in the other case we
1932 # *don't* want $(OBJEXT) to appear here.
1933 ($derived_source ? $this_obj_ext : '.o'),
1934 $extension);
1936 # If we renamed the object then we want to use the
1937 # per-executable flag name. But if this is simply a
1938 # subdir build then we still want to use the AM_ flag
1939 # name.
1940 if ($renamed)
1941 {
1942 unshift @specifics, $derived;
1943 $aggregate = $derived;
1944 }
1945 else
1946 {
1947 unshift @specifics, 'AM';
1948 }
1950 # Each item on this list is a reference to a list consisting
1951 # of four values followed by additional transform flags for
1952 # file_contents. The four values are the derived flag prefix
1953 # (e.g. for `foo_CFLAGS', it is `foo'), the name of the
1954 # source file, the base name of the output file, and
1955 # the extension for the object file.
1956 push (@{$lang_specific_files{$lang->name}},
1957 [@specifics, %transform]);
1958 }
1959 }
1960 elsif ($extension eq $nonansi_obj)
1961 {
1962 # This is probably the result of a direct suffix rule.
1963 # In this case we just accept the rewrite.
1964 $object = "$base$extension";
1965 $object = "$directory/$object" if $directory ne '';
1966 $linker = '';
1967 }
1968 else
1969 {
1970 # No error message here. Used to have one, but it was
1971 # very unpopular.
1972 # FIXME: we could potentially do more processing here,
1973 # perhaps treating the new extension as though it were a
1974 # new source extension (as above). This would require
1975 # more restructuring than is appropriate right now.
1976 next;
1977 }
1979 err_am "object `$object' created by `$full' and `$object_map{$object}'"
1980 if (defined $object_map{$object}
1981 && $object_map{$object} ne $full);
1983 my $comp_val = (($object =~ /\.lo$/)
1984 ? COMPILE_LIBTOOL : COMPILE_ORDINARY);
1985 (my $comp_obj = $object) =~ s/\.lo$/.\$(OBJEXT)/;
1986 if (defined $object_compilation_map{$comp_obj}
1987 && $object_compilation_map{$comp_obj} != 0
1988 # Only see the error once.
1989 && ($object_compilation_map{$comp_obj}
1990 != (COMPILE_LIBTOOL | COMPILE_ORDINARY))
1991 && $object_compilation_map{$comp_obj} != $comp_val)
1992 {
1993 err_am "object `$comp_obj' created both with libtool and without";
1994 }
1995 $object_compilation_map{$comp_obj} |= $comp_val;
1997 if (defined $lang)
1998 {
1999 # Let the language do some special magic if required.
2000 $lang->target_hook ($aggregate, $object, $full, %transform);
2001 }
2003 if ($derived_source)
2004 {
2005 prog_error ($lang->name . " has automatic dependency tracking")
2006 if $lang->autodep ne 'no';
2007 # Make sure this new source file is handled next. That will
2008 # make it appear to be at the right place in the list.
2009 unshift (@files, $object);
2010 # Distribute derived sources unless the source they are
2011 # derived from is not.
2012 &push_dist_common ($object)
2013 unless ($topparent =~ /^(?:nobase_)?nodist_/);
2014 next;
2015 }
2017 $linkers_used{$linker} = 1;
2019 push (@result, $object);
2021 if (! defined $object_map{$object})
2022 {
2023 my @dep_list = ();
2024 $object_map{$object} = $full;
2026 # If resulting object is in subdir, we need to make
2027 # sure the subdir exists at build time.
2028 if ($object =~ /\//)
2029 {
2030 # FIXME: check that $DIRECTORY is somewhere in the
2031 # project
2033 # For Java, the way we're handling it right now, a
2034 # `..' component doesn't make sense.
2035 if ($lang && $lang->name eq 'java' && $object =~ /(\/|^)\.\.\//)
2036 {
2037 err_am "`$full' should not contain a `..' component";
2038 }
2040 # Make sure object is removed by `make mostlyclean'.
2041 $compile_clean_files{$object} = MOSTLY_CLEAN;
2042 # If we have a libtool object then we also must remove
2043 # the ordinary .o.
2044 if ($object =~ /\.lo$/)
2045 {
2046 (my $xobj = $object) =~ s,lo$,\$(OBJEXT),;
2047 $compile_clean_files{$xobj} = MOSTLY_CLEAN;
2049 # Remove any libtool object in this directory.
2050 $libtool_clean_directories{$directory} = 1;
2051 }
2053 push (@dep_list, require_build_directory ($directory));
2055 # If we're generating dependencies, we also want
2056 # to make sure that the appropriate subdir of the
2057 # .deps directory is created.
2058 push (@dep_list,
2059 require_build_directory ($directory . '/$(DEPDIR)'))
2060 unless option 'no-dependencies';
2061 }
2063 &pretty_print_rule ($object . ':', "\t", @dep_list)
2064 if scalar @dep_list > 0;
2065 }
2067 # Transform .o or $o file into .P file (for automatic
2068 # dependency code).
2069 if ($lang && $lang->autodep ne 'no')
2070 {
2071 my $depfile = $object;
2072 $depfile =~ s/\.([^.]*)$/.P$1/;
2073 $depfile =~ s/\$\(OBJEXT\)$/o/;
2074 $dep_files{dirname ($depfile) . '/$(DEPDIR)/'
2075 . basename ($depfile)} = 1;
2076 }
2077 }
2079 return @result;
2080 }
2083 # $LINKER
2084 # define_objects_from_sources ($VAR, $OBJVAR, $NODEFINE, $ONE_FILE,
2085 # $OBJ, $PARENT, $TOPPARENT, $WHERE, %TRANSFORM)
2086 # ---------------------------------------------------------------------------
2087 # Define an _OBJECTS variable for a _SOURCES variable (or subvariable)
2088 #
2089 # Arguments are:
2090 # $VAR is the name of the _SOURCES variable
2091 # $OBJVAR is the name of the _OBJECTS variable if known (otherwise
2092 # it will be generated and returned).
2093 # $NODEFINE is a boolean: if true, $OBJVAR will not be defined (but
2094 # work done to determine the linker will be).
2095 # $ONE_FILE is the canonical (transformed) name of object to build
2096 # $OBJ is the object extension (i.e. either `.o' or `.lo').
2097 # $TOPPARENT is the _SOURCES variable being processed.
2098 # $WHERE context into which this definition is done
2099 # %TRANSFORM extra arguments to pass to file_contents when producing
2100 # rules
2101 #
2102 # Result is a pair ($LINKER, $OBJVAR):
2103 # $LINKER is a boolean, true if a linker is needed to deal with the objects
2104 sub define_objects_from_sources ($$$$$$$%)
2105 {
2106 my ($var, $objvar, $nodefine, $one_file,
2107 $obj, $topparent, $where, %transform) = @_;
2109 my $needlinker = "";
2111 transform_variable_recursively
2112 ($var, $objvar, 'am__objects', $nodefine, $where,
2113 # The transform code to run on each filename.
2114 sub {
2115 my ($subvar, $val, $cond, $full_cond) = @_;
2116 my @trans = handle_single_transform ($subvar, $topparent,
2117 $one_file, $obj, $val,
2118 %transform);
2119 $needlinker = "true" if @trans;
2120 return @trans;
2121 });
2123 return $needlinker;
2124 }
2127 # handle_source_transform ($CANON_TARGET, $TARGET, $OBJEXT, $WHERE, %TRANSFORM)
2128 # -----------------------------------------------------------------------------
2129 # Handle SOURCE->OBJECT transform for one program or library.
2130 # Arguments are:
2131 # canonical (transformed) name of target to build
2132 # actual target of object to build
2133 # object extension (i.e., either `.o' or `$o')
2134 # location of the source variable
2135 # extra arguments to pass to file_contents when producing rules
2136 # Return the name of the linker variable that must be used.
2137 # Empty return means just use `LINK'.
2138 sub handle_source_transform ($$$$%)
2139 {
2140 # one_file is canonical name. unxformed is given name. obj is
2141 # object extension.
2142 my ($one_file, $unxformed, $obj, $where, %transform) = @_;
2144 my $linker = '';
2146 # No point in continuing if _OBJECTS is defined.
2147 return if reject_var ($one_file . '_OBJECTS',
2148 $one_file . '_OBJECTS should not be defined');
2150 my %used_pfx = ();
2151 my $needlinker;
2152 %linkers_used = ();
2153 foreach my $prefix ('', 'EXTRA_', 'dist_', 'nodist_',
2154 'dist_EXTRA_', 'nodist_EXTRA_')
2155 {
2156 my $varname = $prefix . $one_file . "_SOURCES";
2157 my $var = var $varname;
2158 next unless $var;
2160 # We are going to define _OBJECTS variables using the prefix.
2161 # Then we glom them all together. So we can't use the null
2162 # prefix here as we need it later.
2163 my $xpfx = ($prefix eq '') ? 'am_' : $prefix;
2165 # Keep track of which prefixes we saw.
2166 $used_pfx{$xpfx} = 1
2167 unless $prefix =~ /EXTRA_/;
2169 push @sources, "\$($varname)";
2170 push @dist_sources, shadow_unconditionally ($varname, $where)
2171 unless (option ('no-dist') || $prefix =~ /^nodist_/);
2173 $needlinker |=
2174 define_objects_from_sources ($varname,
2175 $xpfx . $one_file . '_OBJECTS',
2176 $prefix =~ /EXTRA_/,
2177 $one_file, $obj, $varname, $where,
2178 DIST_SOURCE => ($prefix !~ /^nodist_/),
2179 %transform);
2180 }
2181 if ($needlinker)
2182 {
2183 $linker ||= &resolve_linker (%linkers_used);
2184 }
2186 my @keys = sort keys %used_pfx;
2187 if (scalar @keys == 0)
2188 {
2189 # The default source for libfoo.la is libfoo.c, but for
2190 # backward compatibility we first look at libfoo_la.c,
2191 # if no default source suffix is given.
2192 my $old_default_source = "$one_file.c";
2193 my $ext_var = var ('AM_DEFAULT_SOURCE_EXT');
2194 my $default_source_ext = $ext_var ? variable_value ($ext_var) : '.c';
2195 msg_var ('unsupported', $ext_var, $ext_var->name . " can assume at most one value")
2196 if $default_source_ext =~ /[\t ]/;
2197 (my $default_source = $unxformed) =~ s,(\.[^./\\]*)?$,$default_source_ext,;
2198 if ($old_default_source ne $default_source
2199 && !$ext_var
2200 && (rule $old_default_source
2201 || rule '$(srcdir)/' . $old_default_source
2202 || rule '${srcdir}/' . $old_default_source
2203 || -f $old_default_source))
2204 {
2205 my $loc = $where->clone;
2206 $loc->pop_context;
2207 msg ('obsolete', $loc,
2208 "the default source for `$unxformed' has been changed "
2209 . "to `$default_source'.\n(Using `$old_default_source' for "
2210 . "backward compatibility.)");
2211 $default_source = $old_default_source;
2212 }
2213 # If a rule exists to build this source with a $(srcdir)
2214 # prefix, use that prefix in our variables too. This is for
2215 # the sake of BSD Make.
2216 if (rule '$(srcdir)/' . $default_source
2217 || rule '${srcdir}/' . $default_source)
2218 {
2219 $default_source = '$(srcdir)/' . $default_source;
2220 }
2222 &define_variable ($one_file . "_SOURCES", $default_source, $where);
2223 push (@sources, $default_source);
2224 push (@dist_sources, $default_source);
2226 %linkers_used = ();
2227 my (@result) =
2228 handle_single_transform ($one_file . '_SOURCES',
2229 $one_file . '_SOURCES',
2230 $one_file, $obj,
2231 $default_source, %transform);
2232 $linker ||= &resolve_linker (%linkers_used);
2233 define_pretty_variable ($one_file . '_OBJECTS', TRUE, $where, @result);
2234 }
2235 else
2236 {
2237 @keys = map { '$(' . $_ . $one_file . '_OBJECTS)' } @keys;
2238 define_pretty_variable ($one_file . '_OBJECTS', TRUE, $where, @keys);
2239 }
2241 # If we want to use `LINK' we must make sure it is defined.
2242 if ($linker eq '')
2243 {
2244 $need_link = 1;
2245 }
2247 return $linker;
2248 }
2251 # handle_lib_objects ($XNAME, $VAR)
2252 # ---------------------------------
2253 # Special-case ALLOCA and LIBOBJS substitutions in _LDADD or _LIBADD variables.
2254 # Also, generate _DEPENDENCIES variable if appropriate.
2255 # Arguments are:
2256 # transformed name of object being built, or empty string if no object
2257 # name of _LDADD/_LIBADD-type variable to examine
2258 # Returns 1 if LIBOBJS seen, 0 otherwise.
2259 sub handle_lib_objects
2260 {
2261 my ($xname, $varname) = @_;
2263 my $var = var ($varname);
2264 prog_error "handle_lib_objects: `$varname' undefined"
2265 unless $var;
2266 prog_error "handle_lib_objects: unexpected variable name `$varname'"
2267 unless $varname =~ /^(.*)(?:LIB|LD)ADD$/;
2268 my $prefix = $1 || 'AM_';
2270 my $seen_libobjs = 0;
2271 my $flagvar = 0;
2273 transform_variable_recursively
2274 ($varname, $xname . '_DEPENDENCIES', 'am__DEPENDENCIES',
2275 ! $xname, INTERNAL,
2276 # Transformation function, run on each filename.
2277 sub {
2278 my ($subvar, $val, $cond, $full_cond) = @_;
2280 if ($val =~ /^-/)
2281 {
2282 # Skip -lfoo and -Ldir silently; these are explicitly allowed.
2283 if ($val !~ /^-[lL]/ &&
2284 # Skip -dlopen and -dlpreopen; these are explicitly allowed
2285 # for Libtool libraries or programs. (Actually we are a bit
2286 # laxe here since this code also applies to non-libtool
2287 # libraries or programs, for which -dlopen and -dlopreopen
2288 # are pure nonsense. Diagnosing this doesn't seem very
2289 # important: the developer will quickly get complaints from
2290 # the linker.)
2291 $val !~ /^-dl(?:pre)?open$/ &&
2292 # Only get this error once.
2293 ! $flagvar)
2294 {
2295 $flagvar = 1;
2296 # FIXME: should display a stack of nested variables
2297 # as context when $var != $subvar.
2298 err_var ($var, "linker flags such as `$val' belong in "
2299 . "`${prefix}LDFLAGS");
2300 }
2301 return ();
2302 }
2303 elsif ($val !~ /^\@.*\@$/)
2304 {
2305 # Assume we have a file of some sort, and output it into the
2306 # dependency variable. Autoconf substitutions are not output;
2307 # rarely is a new dependency substituted into e.g. foo_LDADD
2308 # -- but bad things (e.g. -lX11) are routinely substituted.
2309 # Note that LIBOBJS and ALLOCA are exceptions to this rule,
2310 # and handled specially below.
2311 return $val;
2312 }
2313 elsif ($val =~ /^\@(LT)?LIBOBJS\@$/)
2314 {
2315 handle_LIBOBJS ($subvar, $cond, $1);
2316 $seen_libobjs = 1;
2317 return $val;
2318 }
2319 elsif ($val =~ /^\@(LT)?ALLOCA\@$/)
2320 {
2321 handle_ALLOCA ($subvar, $cond, $1);
2322 return $val;
2323 }
2324 else
2325 {
2326 return ();
2327 }
2328 });
2330 return $seen_libobjs;
2331 }
2333 # handle_LIBOBJS_or_ALLOCA ($VAR)
2334 # -------------------------------
2335 # Definitions common to LIBOBJS and ALLOCA.
2336 # VAR should be one of LIBOBJS, LTLIBOBJS, ALLOCA, or LTALLOCA.
2337 sub handle_LIBOBJS_or_ALLOCA ($)
2338 {
2339 my ($var) = @_;
2341 my $dir = '';
2343 # If LIBOBJS files must be built in another directory we have
2344 # to define LIBOBJDIR and ensure the files get cleaned.
2345 # Otherwise LIBOBJDIR can be left undefined, and the cleaning
2346 # is achieved by `rm -f *.$(OBJEXT)' in compile.am.
2347 if ($config_libobj_dir
2348 && $relative_dir ne $config_libobj_dir)
2349 {
2350 if (option 'subdir-objects')
2351 {
2352 # In the top-level Makefile we do not use $(top_builddir), because
2353 # we are already there, and since the targets are built without
2354 # a $(top_builddir), it helps BSD Make to match them with
2355 # dependencies.
2356 $dir = "$config_libobj_dir/" if $config_libobj_dir ne '.';
2357 $dir = "$topsrcdir/$dir" if $relative_dir ne '.';
2358 define_variable ('LIBOBJDIR', "$dir", INTERNAL);
2359 $clean_files{"\$($var)"} = MOSTLY_CLEAN;
2360 # If LTLIBOBJS is used, we must also clear LIBOBJS (which might
2361 # be created by libtool as a side-effect of creating LTLIBOBJS).
2362 $clean_files{"\$($var)"} = MOSTLY_CLEAN if $var =~ s/^LT//;
2363 }
2364 else
2365 {
2366 error ("`\$($var)' cannot be used outside `$config_libobj_dir' if"
2367 . " `subdir-objects' is not set");
2368 }
2369 }
2371 return $dir;
2372 }
2374 sub handle_LIBOBJS ($$$)
2375 {
2376 my ($var, $cond, $lt) = @_;
2377 my $myobjext = $lt ? 'lo' : 'o';
2378 $lt ||= '';
2380 $var->requires_variables ("\@${lt}LIBOBJS\@ used", $lt . 'LIBOBJS')
2381 if ! keys %libsources;
2383 my $dir = handle_LIBOBJS_or_ALLOCA "${lt}LIBOBJS";
2385 foreach my $iter (keys %libsources)
2386 {
2387 if ($iter =~ /\.[cly]$/)
2388 {
2389 &saw_extension ($&);
2390 &saw_extension ('.c');
2391 }
2393 if ($iter =~ /\.h$/)
2394 {
2395 require_libsource_with_macro ($cond, $var, FOREIGN, $iter);
2396 }
2397 elsif ($iter ne 'alloca.c')
2398 {
2399 my $rewrite = $iter;
2400 $rewrite =~ s/\.c$/.P$myobjext/;
2401 $dep_files{$dir . '$(DEPDIR)/' . $rewrite} = 1;
2402 $rewrite = "^" . quotemeta ($iter) . "\$";
2403 # Only require the file if it is not a built source.
2404 my $bs = var ('BUILT_SOURCES');
2405 if (! $bs || ! grep (/$rewrite/, $bs->value_as_list_recursive))
2406 {
2407 require_libsource_with_macro ($cond, $var, FOREIGN, $iter);
2408 }
2409 }
2410 }
2411 }
2413 sub handle_ALLOCA ($$$)
2414 {
2415 my ($var, $cond, $lt) = @_;
2416 my $myobjext = $lt ? 'lo' : 'o';
2417 $lt ||= '';
2418 my $dir = handle_LIBOBJS_or_ALLOCA "${lt}ALLOCA";
2420 $var->requires_variables ("\@${lt}ALLOCA\@ used", $lt . 'ALLOCA');
2421 $dep_files{$dir . '$(DEPDIR)/alloca.P' . $myobjext} = 1;
2422 require_libsource_with_macro ($cond, $var, FOREIGN, 'alloca.c');
2423 &saw_extension ('.c');
2424 }
2426 # Canonicalize the input parameter
2427 sub canonicalize
2428 {
2429 my ($string) = @_;
2430 $string =~ tr/A-Za-z0-9_\@/_/c;
2431 return $string;
2432 }
2434 # Canonicalize a name, and check to make sure the non-canonical name
2435 # is never used. Returns canonical name. Arguments are name and a
2436 # list of suffixes to check for.
2437 sub check_canonical_spelling
2438 {
2439 my ($name, @suffixes) = @_;
2441 my $xname = &canonicalize ($name);
2442 if ($xname ne $name)
2443 {
2444 foreach my $xt (@suffixes)
2445 {
2446 reject_var ("$name$xt", "use `$xname$xt', not `$name$xt'");
2447 }
2448 }
2450 return $xname;
2451 }
2454 # handle_compile ()
2455 # -----------------
2456 # Set up the compile suite.
2457 sub handle_compile ()
2458 {
2459 return
2460 unless $get_object_extension_was_run;
2462 # Boilerplate.
2463 my $default_includes = '';
2464 if (! option 'nostdinc')
2465 {
2466 my @incs = ('-I.', subst ('am__isrc'));
2468 my $var = var 'CONFIG_HEADER';
2469 if ($var)
2470 {
2471 foreach my $hdr (split (' ', $var->variable_value))
2472 {
2473 push @incs, '-I' . dirname ($hdr);
2474 }
2475 }
2476 # We want `-I. -I$(srcdir)', but the latter -I is redundant
2477 # and unaesthetic in non-VPATH builds. We use `-I.@am__isrc@`
2478 # instead. It will be replaced by '-I.' or '-I. -I$(srcdir)'.
2479 # Items in CONFIG_HEADER are never in $(srcdir) so it is safe
2480 # to just put @am__isrc@ right after `-I.', without a space.
2481 ($default_includes = ' ' . uniq (@incs)) =~ s/ @/@/;
2482 }
2484 my (@mostly_rms, @dist_rms);
2485 foreach my $item (sort keys %compile_clean_files)
2486 {
2487 if ($compile_clean_files{$item} == MOSTLY_CLEAN)
2488 {
2489 push (@mostly_rms, "\t-rm -f $item");
2490 }
2491 elsif ($compile_clean_files{$item} == DIST_CLEAN)
2492 {
2493 push (@dist_rms, "\t-rm -f $item");
2494 }
2495 else
2496 {
2497 prog_error 'invalid entry in %compile_clean_files';
2498 }
2499 }
2501 my ($coms, $vars, $rules) =
2502 &file_contents_internal (1, "$libdir/am/compile.am",
2503 new Automake::Location,
2504 ('DEFAULT_INCLUDES' => $default_includes,
2505 'MOSTLYRMS' => join ("\n", @mostly_rms),
2506 'DISTRMS' => join ("\n", @dist_rms)));
2507 $output_vars .= $vars;
2508 $output_rules .= "$coms$rules";
2510 # Check for automatic de-ANSI-fication.
2511 if (option 'ansi2knr')
2512 {
2513 my ($ansi2knr_filename, $ansi2knr_where) = @{option 'ansi2knr'};
2514 my $ansi2knr_dir = '';
2516 require_variables ($ansi2knr_where, "option `ansi2knr' is used",
2517 TRUE, "ANSI2KNR", "U");
2519 # topdir is where ansi2knr should be.
2520 if ($ansi2knr_filename eq 'ansi2knr')
2521 {
2522 # Only require ansi2knr files if they should appear in
2523 # this directory.
2524 require_file ($ansi2knr_where, FOREIGN,
2525 'ansi2knr.c', 'ansi2knr.1');
2527 # ansi2knr needs to be built before subdirs, so unshift it.
2528 unshift (@all, '$(ANSI2KNR)');
2529 }
2530 else
2531 {
2532 $ansi2knr_dir = dirname ($ansi2knr_filename);
2533 }
2535 $output_rules .= &file_contents ('ansi2knr',
2536 new Automake::Location,
2537 'ANSI2KNR-DIR' => $ansi2knr_dir);
2539 }
2540 }
2542 # handle_libtool ()
2543 # -----------------
2544 # Handle libtool rules.
2545 sub handle_libtool
2546 {
2547 return unless var ('LIBTOOL');
2549 # Libtool requires some files, but only at top level.
2550 # (Starting with Libtool 2.0 we do not have to bother. These
2551 # requirements are done with AC_REQUIRE_AUX_FILE.)
2552 require_conf_file_with_macro (TRUE, 'LIBTOOL', FOREIGN, @libtool_files)
2553 if $relative_dir eq '.' && ! $libtool_new_api;
2555 my @libtool_rms;
2556 foreach my $item (sort keys %libtool_clean_directories)
2557 {
2558 my $dir = ($item eq '.') ? '' : "$item/";
2559 # .libs is for Unix, _libs for DOS.
2560 push (@libtool_rms, "\t-rm -rf ${dir}.libs ${dir}_libs");
2561 }
2563 check_user_variables 'LIBTOOLFLAGS';
2565 # Output the libtool compilation rules.
2566 $output_rules .= &file_contents ('libtool',
2567 new Automake::Location,
2568 LTRMS => join ("\n", @libtool_rms));
2569 }
2571 # handle_programs ()
2572 # ------------------
2573 # Handle C programs.
2574 sub handle_programs
2575 {
2576 my @proglist = &am_install_var ('progs', 'PROGRAMS',
2577 'bin', 'sbin', 'libexec', 'pkglib',
2578 'noinst', 'check');
2579 return if ! @proglist;
2581 my $seen_global_libobjs =
2582 var ('LDADD') && &handle_lib_objects ('', 'LDADD');
2584 foreach my $pair (@proglist)
2585 {
2586 my ($where, $one_file) = @$pair;
2588 my $seen_libobjs = 0;
2589 my $obj = get_object_extension '.$(OBJEXT)';
2591 # Strip any $(EXEEXT) suffix the user might have added, or this
2592 # will confuse &handle_source_transform and &check_canonical_spelling.
2593 # We'll add $(EXEEXT) back later anyway.
2594 $one_file =~ s/\$\(EXEEXT\)$//;
2596 $known_programs{$one_file} = $where;
2598 # Canonicalize names and check for misspellings.
2599 my $xname = &check_canonical_spelling ($one_file, '_LDADD', '_LDFLAGS',
2600 '_SOURCES', '_OBJECTS',
2601 '_DEPENDENCIES');
2603 $where->push_context ("while processing program `$one_file'");
2604 $where->set (INTERNAL->get);
2606 my $linker = &handle_source_transform ($xname, $one_file, $obj, $where,
2607 NONLIBTOOL => 1, LIBTOOL => 0);
2609 if (var ($xname . "_LDADD"))
2610 {
2611 $seen_libobjs = &handle_lib_objects ($xname, $xname . '_LDADD');
2612 }
2613 else
2614 {
2615 # User didn't define prog_LDADD override. So do it.
2616 &define_variable ($xname . '_LDADD', '$(LDADD)', $where);
2618 # This does a bit too much work. But we need it to
2619 # generate _DEPENDENCIES when appropriate.
2620 if (var ('LDADD'))
2621 {
2622 $seen_libobjs = &handle_lib_objects ($xname, 'LDADD');
2623 }
2624 }
2626 reject_var ($xname . '_LIBADD',
2627 "use `${xname}_LDADD', not `${xname}_LIBADD'");
2629 set_seen ($xname . '_DEPENDENCIES');
2630 set_seen ($xname . '_LDFLAGS');
2632 # Determine program to use for link.
2633 my($xlink, $vlink) = &define_per_target_linker_variable ($linker, $xname);
2634 $vlink = verbose_flag ($vlink || 'GEN');
2636 # If the resulting program lies into a subdirectory,
2637 # make sure this directory will exist.
2638 my $dirstamp = require_build_directory_maybe ($one_file);
2640 $libtool_clean_directories{dirname ($one_file)} = 1;
2642 $output_rules .= &file_contents ('program',
2643 $where,
2644 PROGRAM => $one_file,
2645 XPROGRAM => $xname,
2646 XLINK => $xlink,
2647 VERBOSE => $vlink,
2648 DIRSTAMP => $dirstamp,
2649 EXEEXT => '$(EXEEXT)');
2651 if ($seen_libobjs || $seen_global_libobjs)
2652 {
2653 if (var ($xname . '_LDADD'))
2654 {
2655 &check_libobjs_sources ($xname, $xname . '_LDADD');
2656 }
2657 elsif (var ('LDADD'))
2658 {
2659 &check_libobjs_sources ($xname, 'LDADD');
2660 }
2661 }
2662 }
2663 }
2666 # handle_libraries ()
2667 # -------------------
2668 # Handle libraries.
2669 sub handle_libraries
2670 {
2671 my @liblist = &am_install_var ('libs', 'LIBRARIES',
2672 'lib', 'pkglib', 'noinst', 'check');
2673 return if ! @liblist;
2675 my @prefix = am_primary_prefixes ('LIBRARIES', 0, 'lib', 'pkglib',
2676 'noinst', 'check');
2678 if (@prefix)
2679 {
2680 my $var = rvar ($prefix[0] . '_LIBRARIES');
2681 $var->requires_variables ('library used', 'RANLIB');
2682 }
2684 &define_variable ('AR', 'ar', INTERNAL);
2685 &define_variable ('ARFLAGS', 'cru', INTERNAL);
2686 &define_verbose_tagvar ('AR');
2688 foreach my $pair (@liblist)
2689 {
2690 my ($where, $onelib) = @$pair;
2692 my $seen_libobjs = 0;
2693 # Check that the library fits the standard naming convention.
2694 my $bn = basename ($onelib);
2695 if ($bn !~ /^lib.*\.a$/)
2696 {
2697 $bn =~ s/^(?:lib)?(.*?)(?:\.[^.]*)?$/lib$1.a/;
2698 my $suggestion = dirname ($onelib) . "/$bn";
2699 $suggestion =~ s|^\./||g;
2700 msg ('error-gnu/warn', $where,
2701 "`$onelib' is not a standard library name\n"
2702 . "did you mean `$suggestion'?")
2703 }
2705 $where->push_context ("while processing library `$onelib'");
2706 $where->set (INTERNAL->get);
2708 my $obj = get_object_extension '.$(OBJEXT)';
2710 # Canonicalize names and check for misspellings.
2711 my $xlib = &check_canonical_spelling ($onelib, '_LIBADD', '_SOURCES',
2712 '_OBJECTS', '_DEPENDENCIES',
2713 '_AR');
2715 if (! var ($xlib . '_AR'))
2716 {
2717 &define_variable ($xlib . '_AR', '$(AR) $(ARFLAGS)', $where);
2718 }
2720 # Generate support for conditional object inclusion in
2721 # libraries.
2722 if (var ($xlib . '_LIBADD'))
2723 {
2724 if (&handle_lib_objects ($xlib, $xlib . '_LIBADD'))
2725 {
2726 $seen_libobjs = 1;
2727 }
2728 }
2729 else
2730 {
2731 &define_variable ($xlib . "_LIBADD", '', $where);
2732 }
2734 reject_var ($xlib . '_LDADD',
2735 "use `${xlib}_LIBADD', not `${xlib}_LDADD'");
2737 # Make sure we at look at this.
2738 set_seen ($xlib . '_DEPENDENCIES');
2740 &handle_source_transform ($xlib, $onelib, $obj, $where,
2741 NONLIBTOOL => 1, LIBTOOL => 0);
2743 # If the resulting library lies into a subdirectory,
2744 # make sure this directory will exist.
2745 my $dirstamp = require_build_directory_maybe ($onelib);
2746 my $verbose = verbose_flag ('AR');
2747 my $silent = silent_flag ();
2749 $output_rules .= &file_contents ('library',
2750 $where,
2751 VERBOSE => $verbose,
2752 SILENT => $silent,
2753 LIBRARY => $onelib,
2754 XLIBRARY => $xlib,
2755 DIRSTAMP => $dirstamp);
2757 if ($seen_libobjs)
2758 {
2759 if (var ($xlib . '_LIBADD'))
2760 {
2761 &check_libobjs_sources ($xlib, $xlib . '_LIBADD');
2762 }
2763 }
2764 }
2765 }
2768 # handle_ltlibraries ()
2769 # ---------------------
2770 # Handle shared libraries.
2771 sub handle_ltlibraries
2772 {
2773 my @liblist = &am_install_var ('ltlib', 'LTLIBRARIES',
2774 'noinst', 'lib', 'pkglib', 'check');
2775 return if ! @liblist;
2777 my @prefix = am_primary_prefixes ('LTLIBRARIES', 0, 'lib', 'pkglib',
2778 'noinst', 'check');
2780 if (@prefix)
2781 {
2782 my $var = rvar ($prefix[0] . '_LTLIBRARIES');
2783 $var->requires_variables ('Libtool library used', 'LIBTOOL');
2784 }
2786 my %instdirs = ();
2787 my %instsubdirs = ();
2788 my %instconds = ();
2789 my %liblocations = (); # Location (in Makefile.am) of each library.
2791 foreach my $key (@prefix)
2792 {
2793 # Get the installation directory of each library.
2794 my $dir = $key;
2795 my $strip_subdir = 1;
2796 if ($dir =~ /^nobase_/)
2797 {
2798 $dir =~ s/^nobase_//;
2799 $strip_subdir = 0;
2800 }
2801 my $var = rvar ($key . '_LTLIBRARIES');
2803 # We reject libraries which are installed in several places
2804 # in the same condition, because we can only specify one
2805 # `-rpath' option.
2806 $var->traverse_recursively
2807 (sub
2808 {
2809 my ($var, $val, $cond, $full_cond) = @_;
2810 my $hcond = $full_cond->human;
2811 my $where = $var->rdef ($cond)->location;
2812 my $ldir = '';
2813 $ldir = '/' . dirname ($val)
2814 if (!$strip_subdir);
2815 # A library cannot be installed in different directory
2816 # in overlapping conditions.
2817 if (exists $instconds{$val})
2818 {
2819 my ($msg, $acond) =
2820 $instconds{$val}->ambiguous_p ($val, $full_cond);
2822 if ($msg)
2823 {
2824 error ($where, $msg, partial => 1);
2825 my $dirtxt = "installed " . ($strip_subdir ? "in" : "below") . " `$dir'";
2826 $dirtxt = "built for `$dir'"
2827 if $dir eq 'EXTRA' || $dir eq 'noinst' || $dir eq 'check';
2828 my $dircond =
2829 $full_cond->true ? "" : " in condition $hcond";
2831 error ($where, "`$val' should be $dirtxt$dircond ...",
2832 partial => 1);
2834 my $hacond = $acond->human;
2835 my $adir = $instdirs{$val}{$acond};
2836 my $adirtxt = "installed in `$adir'";
2837 $adirtxt = "built for `$adir'"
2838 if ($adir eq 'EXTRA' || $adir eq 'noinst'
2839 || $adir eq 'check');
2840 my $adircond = $acond->true ? "" : " in condition $hacond";
2842 my $onlyone = ($dir ne $adir) ?
2843 ("\nLibtool libraries can be built for only one "
2844 . "destination.") : "";
2846 error ($liblocations{$val}{$acond},
2847 "... and should also be $adirtxt$adircond.$onlyone");
2848 return;
2849 }
2850 }
2851 else
2852 {
2853 $instconds{$val} = new Automake::DisjConditions;
2854 }
2855 $instdirs{$val}{$full_cond} = $dir;
2856 $instsubdirs{$val}{$full_cond} = $ldir;
2857 $liblocations{$val}{$full_cond} = $where;
2858 $instconds{$val} = $instconds{$val}->merge ($full_cond);
2859 },
2860 sub
2861 {
2862 return ();
2863 },
2864 skip_ac_subst => 1);
2865 }
2867 foreach my $pair (@liblist)
2868 {
2869 my ($where, $onelib) = @$pair;
2871 my $seen_libobjs = 0;
2872 my $obj = get_object_extension '.lo';
2874 # Canonicalize names and check for misspellings.
2875 my $xlib = &check_canonical_spelling ($onelib, '_LIBADD', '_LDFLAGS',
2876 '_SOURCES', '_OBJECTS',
2877 '_DEPENDENCIES');
2879 # Check that the library fits the standard naming convention.
2880 my $libname_rx = '^lib.*\.la';
2881 my $ldvar = var ("${xlib}_LDFLAGS") || var ('AM_LDFLAGS');
2882 my $ldvar2 = var ('LDFLAGS');
2883 if (($ldvar && grep (/-module/, $ldvar->value_as_list_recursive))
2884 || ($ldvar2 && grep (/-module/, $ldvar2->value_as_list_recursive)))
2885 {
2886 # Relax name checking for libtool modules.
2887 $libname_rx = '\.la';
2888 }
2890 my $bn = basename ($onelib);
2891 if ($bn !~ /$libname_rx$/)
2892 {
2893 my $type = 'library';
2894 if ($libname_rx eq '\.la')
2895 {
2896 $bn =~ s/^(lib|)(.*?)(?:\.[^.]*)?$/$1$2.la/;
2897 $type = 'module';
2898 }
2899 else
2900 {
2901 $bn =~ s/^(?:lib)?(.*?)(?:\.[^.]*)?$/lib$1.la/;
2902 }
2903 my $suggestion = dirname ($onelib) . "/$bn";
2904 $suggestion =~ s|^\./||g;
2905 msg ('error-gnu/warn', $where,
2906 "`$onelib' is not a standard libtool $type name\n"
2907 . "did you mean `$suggestion'?")
2908 }
2910 $where->push_context ("while processing Libtool library `$onelib'");
2911 $where->set (INTERNAL->get);
2913 # Make sure we look at these.
2914 set_seen ($xlib . '_LDFLAGS');
2915 set_seen ($xlib . '_DEPENDENCIES');
2917 # Generate support for conditional object inclusion in
2918 # libraries.
2919 if (var ($xlib . '_LIBADD'))
2920 {
2921 if (&handle_lib_objects ($xlib, $xlib . '_LIBADD'))
2922 {
2923 $seen_libobjs = 1;
2924 }
2925 }
2926 else
2927 {
2928 &define_variable ($xlib . "_LIBADD", '', $where);
2929 }
2931 reject_var ("${xlib}_LDADD",
2932 "use `${xlib}_LIBADD', not `${xlib}_LDADD'");
2935 my $linker = &handle_source_transform ($xlib, $onelib, $obj, $where,
2936 NONLIBTOOL => 0, LIBTOOL => 1);
2938 # Determine program to use for link.
2939 my($xlink, $vlink) = &define_per_target_linker_variable ($linker, $xlib);
2940 $vlink = verbose_flag ($vlink || 'GEN');
2942 my $rpathvar = "am_${xlib}_rpath";
2943 my $rpath = "\$($rpathvar)";
2944 foreach my $rcond ($instconds{$onelib}->conds)
2945 {
2946 my $val;
2947 if ($instdirs{$onelib}{$rcond} eq 'EXTRA'
2948 || $instdirs{$onelib}{$rcond} eq 'noinst'
2949 || $instdirs{$onelib}{$rcond} eq 'check')
2950 {
2951 # It's an EXTRA_ library, so we can't specify -rpath,
2952 # because we don't know where the library will end up.
2953 # The user probably knows, but generally speaking automake
2954 # doesn't -- and in fact configure could decide
2955 # dynamically between two different locations.
2956 $val = '';
2957 }
2958 else
2959 {
2960 $val = ('-rpath $(' . $instdirs{$onelib}{$rcond} . 'dir)');
2961 $val .= $instsubdirs{$onelib}{$rcond}
2962 if defined $instsubdirs{$onelib}{$rcond};
2963 }
2964 if ($rcond->true)
2965 {
2966 # If $rcond is true there is only one condition and
2967 # there is no point defining an helper variable.
2968 $rpath = $val;
2969 }
2970 else
2971 {
2972 define_pretty_variable ($rpathvar, $rcond, INTERNAL, $val);
2973 }
2974 }
2976 # If the resulting library lies into a subdirectory,
2977 # make sure this directory will exist.
2978 my $dirstamp = require_build_directory_maybe ($onelib);
2980 # Remember to cleanup .libs/ in this directory.
2981 my $dirname = dirname $onelib;
2982 $libtool_clean_directories{$dirname} = 1;
2984 $output_rules .= &file_contents ('ltlibrary',
2985 $where,
2986 LTLIBRARY => $onelib,
2987 XLTLIBRARY => $xlib,
2988 RPATH => $rpath,
2989 XLINK => $xlink,
2990 VERBOSE => $vlink,
2991 DIRSTAMP => $dirstamp);
2992 if ($seen_libobjs)
2993 {
2994 if (var ($xlib . '_LIBADD'))
2995 {
2996 &check_libobjs_sources ($xlib, $xlib . '_LIBADD');
2997 }
2998 }
2999 }
3000 }
3002 # See if any _SOURCES variable were misspelled.
3003 sub check_typos ()
3004 {
3005 # It is ok if the user sets this particular variable.
3006 set_seen 'AM_LDFLAGS';
3008 foreach my $primary ('SOURCES', 'LIBADD', 'LDADD', 'LDFLAGS', 'DEPENDENCIES')
3009 {
3010 foreach my $var (variables $primary)
3011 {
3012 my $varname = $var->name;
3013 # A configure variable is always legitimate.
3014 next if exists $configure_vars{$varname};
3016 for my $cond ($var->conditions->conds)
3017 {
3018 $varname =~ /^(?:nobase_)?(?:dist_|nodist_)?(.*)_[[:alnum:]]+$/;
3019 msg_var ('syntax', $var, "variable `$varname' is defined but no"
3020 . " program or\nlibrary has `$1' as canonical name"
3021 . " (possible typo)")
3022 unless $var->rdef ($cond)->seen;
3023 }
3024 }
3025 }
3026 }
3029 # Handle scripts.
3030 sub handle_scripts
3031 {
3032 # NOTE we no longer automatically clean SCRIPTS, because it is
3033 # useful to sometimes distribute scripts verbatim. This happens
3034 # e.g. in Automake itself.
3035 &am_install_var ('-candist', 'scripts', 'SCRIPTS',
3036 'bin', 'sbin', 'libexec', 'pkgdata',
3037 'noinst', 'check');
3038 }
3043 ## ------------------------ ##
3044 ## Handling Texinfo files. ##
3045 ## ------------------------ ##
3047 # ($OUTFILE, $VFILE, @CLEAN_FILES)
3048 # &scan_texinfo_file ($FILENAME)
3049 # ------------------------------
3050 # $OUTFILE - name of the info file produced by $FILENAME.
3051 # $VFILE - name of the version.texi file used (undef if none).
3052 # @CLEAN_FILES - list of byproducts (indexes etc.)
3053 sub scan_texinfo_file ($)
3054 {
3055 my ($filename) = @_;
3057 # Some of the following extensions are always created, no matter
3058 # whether indexes are used or not. Other (like cps, fns, ... pgs)
3059 # are only created when they are used. We used to scan $FILENAME
3060 # for their use, but that is not enough: they could be used in
3061 # included files. We can't scan included files because we don't
3062 # know the include path. Therefore we always erase these files, no
3063 # matter whether they are used or not.
3064 #
3065 # (tmp is only created if an @macro is used and a certain e-TeX
3066 # feature is not available.)
3067 my %clean_suffixes =
3068 map { $_ => 1 } (qw(aux log toc tmp
3069 cp cps
3070 fn fns
3071 ky kys
3072 vr vrs
3073 tp tps
3074 pg pgs)); # grep 'new.*index' texinfo.tex
3076 my $texi = new Automake::XFile "< $filename";
3077 verb "reading $filename";
3079 my ($outfile, $vfile);
3080 while ($_ = $texi->getline)
3081 {
3082 if (/^\@setfilename +(\S+)/)
3083 {
3084 # Honor only the first @setfilename. (It's possible to have
3085 # more occurrences later if the manual shows examples of how
3086 # to use @setfilename...)
3087 next if $outfile;
3089 $outfile = $1;
3090 if ($outfile =~ /\.([^.]+)$/ && $1 ne 'info')
3091 {
3092 error ("$filename:$.",
3093 "output `$outfile' has unrecognized extension");
3094 return;
3095 }
3096 }
3097 # A "version.texi" file is actually any file whose name matches
3098 # "vers*.texi".
3099 elsif (/^\@include\s+(vers[^.]*\.texi)\s*$/)
3100 {
3101 $vfile = $1;
3102 }
3104 # Try to find new or unused indexes.
3106 # Creating a new category of index.
3107 elsif (/^\@def(code)?index (\w+)/)
3108 {
3109 $clean_suffixes{$2} = 1;
3110 $clean_suffixes{"$2s"} = 1;
3111 }
3113 # Merging an index into an another.
3114 elsif (/^\@syn(code)?index (\w+) (\w+)/)
3115 {
3116 delete $clean_suffixes{"$2s"};
3117 $clean_suffixes{"$3s"} = 1;
3118 }
3120 }
3122 if (! $outfile)
3123 {
3124 err_am "`$filename' missing \@setfilename";
3125 return;
3126 }
3128 my $infobase = basename ($filename);
3129 $infobase =~ s/\.te?xi(nfo)?$//;
3130 return ($outfile, $vfile,
3131 map { "$infobase.$_" } (sort keys %clean_suffixes));
3132 }
3135 # ($DIRSTAMP, @CLEAN_FILES)
3136 # output_texinfo_build_rules ($SOURCE, $DEST, $INSRC, @DEPENDENCIES)
3137 # ------------------------------------------------------------------
3138 # SOURCE - the source Texinfo file
3139 # DEST - the destination Info file
3140 # INSRC - wether DEST should be built in the source tree
3141 # DEPENDENCIES - known dependencies
3142 sub output_texinfo_build_rules ($$$@)
3143 {
3144 my ($source, $dest, $insrc, @deps) = @_;
3146 # Split `a.texi' into `a' and `.texi'.
3147 my ($spfx, $ssfx) = ($source =~ /^(.*?)(\.[^.]*)?$/);
3148 my ($dpfx, $dsfx) = ($dest =~ /^(.*?)(\.[^.]*)?$/);
3150 $ssfx ||= "";
3151 $dsfx ||= "";
3153 # We can output two kinds of rules: the "generic" rules use Make
3154 # suffix rules and are appropriate when $source and $dest do not lie
3155 # in a sub-directory; the "specific" rules are needed in the other
3156 # case.
3157 #
3158 # The former are output only once (this is not really apparent here,
3159 # but just remember that some logic deeper in Automake will not
3160 # output the same rule twice); while the later need to be output for
3161 # each Texinfo source.
3162 my $generic;
3163 my $makeinfoflags;
3164 my $sdir = dirname $source;
3165 if ($sdir eq '.' && dirname ($dest) eq '.')
3166 {
3167 $generic = 1;
3168 $makeinfoflags = '-I $(srcdir)';
3169 }
3170 else
3171 {
3172 $generic = 0;
3173 $makeinfoflags = "-I $sdir -I \$(srcdir)/$sdir";
3174 }
3176 # A directory can contain two kinds of info files: some built in the
3177 # source tree, and some built in the build tree. The rules are
3178 # different in each case. However we cannot output two different
3179 # set of generic rules. Because in-source builds are more usual, we
3180 # use generic rules in this case and fall back to "specific" rules
3181 # for build-dir builds. (It should not be a problem to invert this
3182 # if needed.)
3183 $generic = 0 unless $insrc;
3185 # We cannot use a suffix rule to build info files with an empty
3186 # extension. Otherwise we would output a single suffix inference
3187 # rule, with separate dependencies, as in
3188 #
3189 # .texi:
3190 # $(MAKEINFO) ...
3191 # foo.info: foo.texi
3192 #
3193 # which confuse Solaris make. (See the Autoconf manual for
3194 # details.) Therefore we use a specific rule in this case. This
3195 # applies to info files only (dvi and pdf files always have an
3196 # extension).
3197 my $generic_info = ($generic && $dsfx) ? 1 : 0;
3199 # If the resulting file lie into a subdirectory,
3200 # make sure this directory will exist.
3201 my $dirstamp = require_build_directory_maybe ($dest);
3203 my $dipfx = ($insrc ? '$(srcdir)/' : '') . $dpfx;
3205 $output_rules .= file_contents ('texibuild',
3206 new Automake::Location,
3207 DEPS => "@deps",
3208 DEST_PREFIX => $dpfx,
3209 DEST_INFO_PREFIX => $dipfx,
3210 DEST_SUFFIX => $dsfx,
3211 DIRSTAMP => $dirstamp,
3212 GENERIC => $generic,
3213 GENERIC_INFO => $generic_info,
3214 INSRC => $insrc,
3215 MAKEINFOFLAGS => $makeinfoflags,
3216 SOURCE => ($generic
3217 ? '$<' : $source),
3218 SOURCE_INFO => ($generic_info
3219 ? '$<' : $source),
3220 SOURCE_REAL => $source,
3221 SOURCE_SUFFIX => $ssfx,
3222 );
3223 return ($dirstamp, "$dpfx.dvi", "$dpfx.pdf", "$dpfx.ps", "$dpfx.html");
3224 }
3227 # $TEXICLEANS
3228 # handle_texinfo_helper ($info_texinfos)
3229 # --------------------------------------
3230 # Handle all Texinfo source; helper for handle_texinfo.
3231 sub handle_texinfo_helper ($)
3232 {
3233 my ($info_texinfos) = @_;
3234 my (@infobase, @info_deps_list, @texi_deps);
3235 my %versions;
3236 my $done = 0;
3237 my @texi_cleans;
3239 # Build a regex matching user-cleaned files.
3240 my $d = var 'DISTCLEANFILES';
3241 my $c = var 'CLEANFILES';
3242 my @f = ();
3243 push @f, $d->value_as_list_recursive (inner_expand => 1) if $d;
3244 push @f, $c->value_as_list_recursive (inner_expand => 1) if $c;
3245 @f = map { s|[^A-Za-z_0-9*\[\]\-]|\\$&|g; s|\*|[^/]*|g; $_; } @f;
3246 my $user_cleaned_files = '^(?:' . join ('|', @f) . ')$';
3248 foreach my $texi
3249 ($info_texinfos->value_as_list_recursive (inner_expand => 1))
3250 {
3251 my $infobase = $texi;
3252 $infobase =~ s/\.(txi|texinfo|texi)$//;
3254 if ($infobase eq $texi)
3255 {
3256 # FIXME: report line number.
3257 err_am "texinfo file `$texi' has unrecognized extension";
3258 next;
3259 }
3261 push @infobase, $infobase;
3263 # If 'version.texi' is referenced by input file, then include
3264 # automatic versioning capability.
3265 my ($out_file, $vtexi, @clean_files) =
3266 scan_texinfo_file ("$relative_dir/$texi")
3267 or next;
3268 push (@texi_cleans, @clean_files);
3270 # If the Texinfo source is in a subdirectory, create the
3271 # resulting info in this subdirectory. If it is in the current
3272 # directory, try hard to not prefix "./" because it breaks the
3273 # generic rules.
3274 my $outdir = dirname ($texi) . '/';
3275 $outdir = "" if $outdir eq './';
3276 $out_file = $outdir . $out_file;
3278 # Until Automake 1.6.3, .info files were built in the
3279 # source tree. This was an obstacle to the support of
3280 # non-distributed .info files, and non-distributed .texi
3281 # files.
3282 #
3283 # * Non-distributed .texi files is important in some packages
3284 # where .texi files are built at make time, probably using
3285 # other binaries built in the package itself, maybe using
3286 # tools or information found on the build host. Because
3287 # these files are not distributed they are always rebuilt
3288 # at make time; they should therefore not lie in the source
3289 # directory. One plan was to support this using
3290 # nodist_info_TEXINFOS or something similar. (Doing this
3291 # requires some sanity checks. For instance Automake should
3292 # not allow:
3293 # dist_info_TEXINFOS = foo.texi
3294 # nodist_foo_TEXINFOS = included.texi
3295 # because a distributed file should never depend on a
3296 # non-distributed file.)
3297 #
3298 # * If .texi files are not distributed, then .info files should
3299 # not be distributed either. There are also cases where one
3300 # wants to distribute .texi files, but does not want to
3301 # distribute the .info files. For instance the Texinfo package
3302 # distributes the tool used to build these files; it would
3303 # be a waste of space to distribute them. It's not clear
3304 # which syntax we should use to indicate that .info files should
3305 # not be distributed. Akim Demaille suggested that eventually
3306 # we switch to a new syntax:
3307 # | Maybe we should take some inspiration from what's already
3308 # | done in the rest of Automake. Maybe there is too much
3309 # | syntactic sugar here, and you want
3310 # | nodist_INFO = bar.info
3311 # | dist_bar_info_SOURCES = bar.texi
3312 # | bar_texi_DEPENDENCIES = foo.texi
3313 # | with a bit of magic to have bar.info represent the whole
3314 # | bar*info set. That's a lot more verbose that the current
3315 # | situation, but it is # not new, hence the user has less
3316 # | to learn.
3317 # |
3318 # | But there is still too much room for meaningless specs:
3319 # | nodist_INFO = bar.info
3320 # | dist_bar_info_SOURCES = bar.texi
3321 # | dist_PS = bar.ps something-written-by-hand.ps
3322 # | nodist_bar_ps_SOURCES = bar.texi
3323 # | bar_texi_DEPENDENCIES = foo.texi
3324 # | here bar.texi is dist_ in line 2, and nodist_ in 4.
3325 #
3326 # Back to the point, it should be clear that in order to support
3327 # non-distributed .info files, we need to build them in the
3328 # build tree, not in the source tree (non-distributed .texi
3329 # files are less of a problem, because we do not output build
3330 # rules for them). In Automake 1.7 .info build rules have been
3331 # largely cleaned up so that .info files get always build in the
3332 # build tree, even when distributed. The idea was that
3333 # (1) if during a VPATH build the .info file was found to be
3334 # absent or out-of-date (in the source tree or in the
3335 # build tree), Make would rebuild it in the build tree.
3336 # If an up-to-date source-tree of the .info file existed,
3337 # make would not rebuild it in the build tree.
3338 # (2) having two copies of .info files, one in the source tree
3339 # and one (newer) in the build tree is not a problem
3340 # because `make dist' always pick files in the build tree
3341 # first.
3342 # However it turned out the be a bad idea for several reasons:
3343 # * Tru64, OpenBSD, and FreeBSD (not NetBSD) Make do not behave
3344 # like GNU Make on point (1) above. These implementations
3345 # of Make would always rebuild .info files in the build
3346 # tree, even if such files were up to date in the source
3347 # tree. Consequently, it was impossible to perform a VPATH
3348 # build of a package containing Texinfo files using these
3349 # Make implementations.
3350 # (Refer to the Autoconf Manual, section "Limitation of
3351 # Make", paragraph "VPATH", item "target lookup", for
3352 # an account of the differences between these
3353 # implementations.)
3354 # * The GNU Coding Standards require these files to be built
3355 # in the source-tree (when they are distributed, that is).
3356 # * Keeping a fresher copy of distributed files in the
3357 # build tree can be annoying during development because
3358 # - if the files is kept under CVS, you really want it
3359 # to be updated in the source tree
3360 # - it is confusing that `make distclean' does not erase
3361 # all files in the build tree.
3362 #
3363 # Consequently, starting with Automake 1.8, .info files are
3364 # built in the source tree again. Because we still plan to
3365 # support non-distributed .info files at some point, we
3366 # have a single variable ($INSRC) that controls whether
3367 # the current .info file must be built in the source tree
3368 # or in the build tree. Actually this variable is switched
3369 # off for .info files that appear to be cleaned; this is
3370 # for backward compatibility with package such as Texinfo,
3371 # which do things like
3372 # info_TEXINFOS = texinfo.txi info-stnd.texi info.texi
3373 # DISTCLEANFILES = texinfo texinfo-* info*.info*
3374 # # Do not create info files for distribution.
3375 # dist-info:
3376 # in order not to distribute .info files.
3377 my $insrc = ($out_file =~ $user_cleaned_files) ? 0 : 1;
3379 my $soutdir = '$(srcdir)/' . $outdir;
3380 $outdir = $soutdir if $insrc;
3382 # If user specified file_TEXINFOS, then use that as explicit
3383 # dependency list.
3384 @texi_deps = ();
3385 push (@texi_deps, "$soutdir$vtexi") if $vtexi;
3387 my $canonical = canonicalize ($infobase);
3388 if (var ($canonical . "_TEXINFOS"))
3389 {
3390 push (@texi_deps, '$(' . $canonical . '_TEXINFOS)');
3391 push_dist_common ('$(' . $canonical . '_TEXINFOS)');
3392 }
3394 my ($dirstamp, @cfiles) =
3395 output_texinfo_build_rules ($texi, $out_file, $insrc, @texi_deps);
3396 push (@texi_cleans, @cfiles);
3398 push (@info_deps_list, $out_file);
3400 # If a vers*.texi file is needed, emit the rule.
3401 if ($vtexi)
3402 {
3403 err_am ("`$vtexi', included in `$texi', "
3404 . "also included in `$versions{$vtexi}'")
3405 if defined $versions{$vtexi};
3406 $versions{$vtexi} = $texi;
3408 # We number the stamp-vti files. This is doable since the
3409 # actual names don't matter much. We only number starting
3410 # with the second one, so that the common case looks nice.
3411 my $vti = ($done ? $done : 'vti');
3412 ++$done;
3414 # This is ugly, but it is our historical practice.
3415 if ($config_aux_dir_set_in_configure_ac)
3416 {
3417 require_conf_file_with_macro (TRUE, 'info_TEXINFOS', FOREIGN,
3418 'mdate-sh');
3419 }
3420 else
3421 {
3422 require_file_with_macro (TRUE, 'info_TEXINFOS',
3423 FOREIGN, 'mdate-sh');
3424 }
3426 my $conf_dir;
3427 if ($config_aux_dir_set_in_configure_ac)
3428 {
3429 $conf_dir = "$am_config_aux_dir/";
3430 }
3431 else
3432 {
3433 $conf_dir = '$(srcdir)/';
3434 }
3435 $output_rules .= file_contents ('texi-vers',
3436 new Automake::Location,
3437 TEXI => $texi,
3438 VTI => $vti,
3439 STAMPVTI => "${soutdir}stamp-$vti",
3440 VTEXI => "$soutdir$vtexi",
3441 MDDIR => $conf_dir,
3442 DIRSTAMP => $dirstamp);
3443 }
3444 }
3446 # Handle location of texinfo.tex.
3447 my $need_texi_file = 0;
3448 my $texinfodir;
3449 if (var ('TEXINFO_TEX'))
3450 {
3451 # The user defined TEXINFO_TEX so assume he knows what he is
3452 # doing.
3453 $texinfodir = ('$(srcdir)/'
3454 . dirname (variable_value ('TEXINFO_TEX')));
3455 }
3456 elsif (option 'cygnus')
3457 {
3458 $texinfodir = '$(top_srcdir)/../texinfo';
3459 define_variable ('TEXINFO_TEX', "$texinfodir/texinfo.tex", INTERNAL);
3460 }
3461 elsif ($config_aux_dir_set_in_configure_ac)
3462 {
3463 $texinfodir = $am_config_aux_dir;
3464 define_variable ('TEXINFO_TEX', "$texinfodir/texinfo.tex", INTERNAL);
3465 $need_texi_file = 2; # so that we require_conf_file later
3466 }
3467 else
3468 {
3469 $texinfodir = '$(srcdir)';
3470 $need_texi_file = 1;
3471 }
3472 define_variable ('am__TEXINFO_TEX_DIR', $texinfodir, INTERNAL);
3474 push (@dist_targets, 'dist-info');
3476 if (! option 'no-installinfo')
3477 {
3478 # Make sure documentation is made and installed first. Use
3479 # $(INFO_DEPS), not 'info', because otherwise recursive makes
3480 # get run twice during "make all".
3481 unshift (@all, '$(INFO_DEPS)');
3482 }
3484 define_files_variable ("DVIS", @infobase, 'dvi', INTERNAL);
3485 define_files_variable ("PDFS", @infobase, 'pdf', INTERNAL);
3486 define_files_variable ("PSS", @infobase, 'ps', INTERNAL);
3487 define_files_variable ("HTMLS", @infobase, 'html', INTERNAL);
3489 # This next isn't strictly needed now -- the places that look here
3490 # could easily be changed to look in info_TEXINFOS. But this is
3491 # probably better, in case noinst_TEXINFOS is ever supported.
3492 define_variable ("TEXINFOS", variable_value ('info_TEXINFOS'), INTERNAL);
3494 # Do some error checking. Note that this file is not required
3495 # when in Cygnus mode; instead we defined TEXINFO_TEX explicitly
3496 # up above.
3497 if ($need_texi_file && ! option 'no-texinfo.tex')
3498 {
3499 if ($need_texi_file > 1)
3500 {
3501 require_conf_file_with_macro (TRUE, 'info_TEXINFOS', FOREIGN,
3502 'texinfo.tex');
3503 }
3504 else
3505 {
3506 require_file_with_macro (TRUE, 'info_TEXINFOS', FOREIGN,
3507 'texinfo.tex');
3508 }
3509 }
3511 return makefile_wrap ("", "\t ", @texi_cleans);
3512 }
3515 # handle_texinfo ()
3516 # -----------------
3517 # Handle all Texinfo source.
3518 sub handle_texinfo ()
3519 {
3520 reject_var 'TEXINFOS', "`TEXINFOS' is an anachronism; use `info_TEXINFOS'";
3521 # FIXME: I think this is an obsolete future feature name.
3522 reject_var 'html_TEXINFOS', "HTML generation not yet supported";
3524 my $info_texinfos = var ('info_TEXINFOS');
3525 my $texiclean = "";
3526 if ($info_texinfos)
3527 {
3528 $texiclean = handle_texinfo_helper ($info_texinfos);
3529 }
3530 $output_rules .= file_contents ('texinfos',
3531 new Automake::Location,
3532 TEXICLEAN => $texiclean,
3533 'LOCAL-TEXIS' => !!$info_texinfos);
3534 }
3537 # Handle any man pages.
3538 sub handle_man_pages
3539 {
3540 reject_var 'MANS', "`MANS' is an anachronism; use `man_MANS'";
3542 # Find all the sections in use. We do this by first looking for
3543 # "standard" sections, and then looking for any additional
3544 # sections used in man_MANS.
3545 my (%sections, %notrans_sections, %trans_sections,
3546 %notrans_vars, %trans_vars, %notrans_sect_vars, %trans_sect_vars);
3547 # We handle nodist_ for uniformity. man pages aren't distributed
3548 # by default so it isn't actually very important.
3549 foreach my $npfx ('', 'notrans_')
3550 {
3551 foreach my $pfx ('', 'dist_', 'nodist_')
3552 {
3553 # Add more sections as needed.
3554 foreach my $section ('0'..'9', 'n', 'l')
3555 {
3556 my $varname = $npfx . $pfx . 'man' . $section . '_MANS';
3557 if (var ($varname))
3558 {
3559 $sections{$section} = 1;
3560 $varname = '$(' . $varname . ')';
3561 if ($npfx eq 'notrans_')
3562 {
3563 $notrans_sections{$section} = 1;
3564 $notrans_sect_vars{$varname} = 1;
3565 }
3566 else
3567 {
3568 $trans_sections{$section} = 1;
3569 $trans_sect_vars{$varname} = 1;
3570 }
3572 &push_dist_common ($varname)
3573 if $pfx eq 'dist_';
3574 }
3575 }
3577 my $varname = $npfx . $pfx . 'man_MANS';
3578 my $var = var ($varname);
3579 if ($var)
3580 {
3581 foreach ($var->value_as_list_recursive)
3582 {
3583 # A page like `foo.1c' goes into man1dir.
3584 if (/\.([0-9a-z])([a-z]*)$/)
3585 {
3586 $sections{$1} = 1;
3587 if ($npfx eq 'notrans_')
3588 {
3589 $notrans_sections{$1} = 1;
3590 }
3591 else
3592 {
3593 $trans_sections{$1} = 1;
3594 }
3595 }
3596 }
3598 $varname = '$(' . $varname . ')';
3599 if ($npfx eq 'notrans_')
3600 {
3601 $notrans_vars{$varname} = 1;
3602 }
3603 else
3604 {
3605 $trans_vars{$varname} = 1;
3606 }
3607 &push_dist_common ($varname)
3608 if $pfx eq 'dist_';
3609 }
3610 }
3611 }
3613 return unless %sections;
3615 my @unsorted_deps;
3617 # Build section independent variables.
3618 my $have_notrans = %notrans_vars;
3619 my @notrans_list = sort keys %notrans_vars;
3620 my $have_trans = %trans_vars;
3621 my @trans_list = sort keys %trans_vars;
3623 # Now for each section, generate an install and uninstall rule.
3624 # Sort sections so output is deterministic.
3625 foreach my $section (sort keys %sections)
3626 {
3627 # Build section dependent variables.
3628 my $notrans_mans = $have_notrans || exists $notrans_sections{$section};
3629 my $trans_mans = $have_trans || exists $trans_sections{$section};
3630 my (%notrans_this_sect, %trans_this_sect);
3631 my $expr = 'man' . $section . '_MANS';
3632 foreach my $varname (keys %notrans_sect_vars)
3633 {
3634 if ($varname =~ /$expr/)
3635 {
3636 $notrans_this_sect{$varname} = 1;
3637 }
3638 }
3639 foreach my $varname (keys %trans_sect_vars)
3640 {
3641 if ($varname =~ /$expr/)
3642 {
3643 $trans_this_sect{$varname} = 1;
3644 }
3645 }
3646 my @notrans_sect_list = sort keys %notrans_this_sect;
3647 my @trans_sect_list = sort keys %trans_this_sect;
3648 @unsorted_deps = (keys %notrans_vars, keys %trans_vars,
3649 keys %notrans_this_sect, keys %trans_this_sect);
3650 my @deps = sort @unsorted_deps;
3651 $output_rules .= &file_contents ('mans',
3652 new Automake::Location,
3653 SECTION => $section,
3654 DEPS => "@deps",
3655 NOTRANS_MANS => $notrans_mans,
3656 NOTRANS_SECT_LIST => "@notrans_sect_list",
3657 HAVE_NOTRANS => $have_notrans,
3658 NOTRANS_LIST => "@notrans_list",
3659 TRANS_MANS => $trans_mans,
3660 TRANS_SECT_LIST => "@trans_sect_list",
3661 HAVE_TRANS => $have_trans,
3662 TRANS_LIST => "@trans_list");
3663 }
3665 @unsorted_deps = (keys %notrans_vars, keys %trans_vars,
3666 keys %notrans_sect_vars, keys %trans_sect_vars);
3667 my @mans = sort @unsorted_deps;
3668 $output_vars .= file_contents ('mans-vars',
3669 new Automake::Location,
3670 MANS => "@mans");
3672 push (@all, '$(MANS)')
3673 unless option 'no-installman';
3674 }
3676 # Handle DATA variables.
3677 sub handle_data
3678 {
3679 &am_install_var ('-noextra', '-candist', 'data', 'DATA',
3680 'data', 'dataroot', 'dvi', 'html', 'pdf', 'ps',
3681 'sysconf', 'sharedstate', 'localstate',
3682 'pkgdata', 'lisp', 'noinst', 'check');
3683 }
3685 # Handle TAGS.
3686 sub handle_tags
3687 {
3688 my @tag_deps = ();
3689 my @ctag_deps = ();
3690 if (var ('SUBDIRS'))
3691 {
3692 $output_rules .= ("tags-recursive:\n"
3693 . "\tlist=\'\$(SUBDIRS)\'; for subdir in \$\$list; do \\\n"
3694 # Never fail here if a subdir fails; it
3695 # isn't important.
3696 . "\t test \"\$\$subdir\" = . || (\$(am__cd) \$\$subdir"
3697 . " && \$(MAKE) \$(AM_MAKEFLAGS) tags); \\\n"
3698 . "\tdone\n");
3699 push (@tag_deps, 'tags-recursive');
3700 &depend ('.PHONY', 'tags-recursive');
3701 &depend ('.MAKE', 'tags-recursive');
3703 $output_rules .= ("ctags-recursive:\n"
3704 . "\tlist=\'\$(SUBDIRS)\'; for subdir in \$\$list; do \\\n"
3705 # Never fail here if a subdir fails; it
3706 # isn't important.
3707 . "\t test \"\$\$subdir\" = . || (\$(am__cd) \$\$subdir"
3708 . " && \$(MAKE) \$(AM_MAKEFLAGS) ctags); \\\n"
3709 . "\tdone\n");
3710 push (@ctag_deps, 'ctags-recursive');
3711 &depend ('.PHONY', 'ctags-recursive');
3712 &depend ('.MAKE', 'ctags-recursive');
3713 }
3715 if (&saw_sources_p (1)
3716 || var ('ETAGS_ARGS')
3717 || @tag_deps)
3718 {
3719 my @config;
3720 foreach my $spec (@config_headers)
3721 {
3722 my ($out, @ins) = split_config_file_spec ($spec);
3723 foreach my $in (@ins)
3724 {
3725 # If the config header source is in this directory,
3726 # require it.
3727 push @config, basename ($in)
3728 if $relative_dir eq dirname ($in);
3729 }
3730 }
3731 $output_rules .= &file_contents ('tags',
3732 new Automake::Location,
3733 CONFIG => "@config",
3734 TAGSDIRS => "@tag_deps",
3735 CTAGSDIRS => "@ctag_deps");
3737 set_seen 'TAGS_DEPENDENCIES';
3738 }
3739 elsif (reject_var ('TAGS_DEPENDENCIES',
3740 "doesn't make sense to define `TAGS_DEPENDENCIES'"
3741 . "without\nsources or `ETAGS_ARGS'"))
3742 {
3743 }
3744 else
3745 {
3746 # Every Makefile must define some sort of TAGS rule.
3747 # Otherwise, it would be possible for a top-level "make TAGS"
3748 # to fail because some subdirectory failed.
3749 $output_rules .= "tags: TAGS\nTAGS:\n\n";
3750 # Ditto ctags.
3751 $output_rules .= "ctags: CTAGS\nCTAGS:\n\n";
3752 }
3753 }
3755 # Handle multilib support.
3756 sub handle_multilib
3757 {
3758 if ($seen_multilib && $relative_dir eq '.')
3759 {
3760 $output_rules .= &file_contents ('multilib', new Automake::Location);
3761 push (@all, 'all-multi');
3762 }
3763 }
3766 # user_phony_rule ($NAME)
3767 # -----------------------
3768 # Return false if rule $NAME does not exist. Otherwise,
3769 # declare it as phony, complete its definition (in case it is
3770 # conditional), and return its Automake::Rule instance.
3771 sub user_phony_rule ($)
3772 {
3773 my ($name) = @_;
3774 my $rule = rule $name;
3775 if ($rule)
3776 {
3777 depend ('.PHONY', $name);
3778 # Define $NAME in all condition where it is not already defined,
3779 # so that it is always OK to depend on $NAME.
3780 for my $c ($rule->not_always_defined_in_cond (TRUE)->conds)
3781 {
3782 Automake::Rule::define ($name, 'internal', RULE_AUTOMAKE,
3783 $c, INTERNAL);
3784 $output_rules .= $c->subst_string . "$name:\n";
3785 }
3786 }
3787 return $rule;
3788 }
3791 # $BOOLEAN
3792 # &for_dist_common ($A, $B)
3793 # -------------------------
3794 # Subroutine for &handle_dist: sort files to dist.
3795 #
3796 # We put README first because it then becomes easier to make a
3797 # Usenet-compliant shar file (in these, README must be first).
3798 #
3799 # FIXME: do more ordering of files here.
3800 sub for_dist_common
3801 {
3802 return 0
3803 if $a eq $b;
3804 return -1
3805 if $a eq 'README';
3806 return 1
3807 if $b eq 'README';
3808 return $a cmp $b;
3809 }
3811 # handle_dist
3812 # -----------
3813 # Handle 'dist' target.
3814 sub handle_dist ()
3815 {
3816 # Substitutions for distdir.am
3817 my %transform;
3819 # Define DIST_SUBDIRS. This must always be done, regardless of the
3820 # no-dist setting: target like `distclean' or `maintainer-clean' use it.
3821 my $subdirs = var ('SUBDIRS');
3822 if ($subdirs)
3823 {
3824 # If SUBDIRS is conditionally defined, then set DIST_SUBDIRS
3825 # to all possible directories, and use it. If DIST_SUBDIRS is
3826 # defined, just use it.
3828 # Note that we check DIST_SUBDIRS first on purpose, so that
3829 # we don't call has_conditional_contents for now reason.
3830 # (In the past one project used so many conditional subdirectories
3831 # that calling has_conditional_contents on SUBDIRS caused
3832 # automake to grow to 150Mb -- this should not happen with
3833 # the current implementation of has_conditional_contents,
3834 # but it's more efficient to avoid the call anyway.)
3835 if (var ('DIST_SUBDIRS'))
3836 {
3837 }
3838 elsif ($subdirs->has_conditional_contents)
3839 {
3840 define_pretty_variable
3841 ('DIST_SUBDIRS', TRUE, INTERNAL,
3842 uniq ($subdirs->value_as_list_recursive));
3843 }
3844 else
3845 {
3846 # We always define this because that is what `distclean'
3847 # wants.
3848 define_pretty_variable ('DIST_SUBDIRS', TRUE, INTERNAL,
3849 '$(SUBDIRS)');
3850 }
3851 }
3853 # The remaining definitions are only required when a dist target is used.
3854 return if option 'no-dist';
3856 # At least one of the archive formats must be enabled.
3857 if ($relative_dir eq '.')
3858 {
3859 my $archive_defined = option 'no-dist-gzip' ? 0 : 1;
3860 $archive_defined ||=
3861 grep { option "dist-$_" } qw(shar zip tarZ bzip2 lzma xz);
3862 error (option 'no-dist-gzip',
3863 "no-dist-gzip specified but no dist-* specified, "
3864 . "at least one archive format must be enabled")
3865 unless $archive_defined;
3866 }
3868 # Look for common files that should be included in distribution.
3869 # If the aux dir is set, and it does not have a Makefile.am, then
3870 # we check for these files there as well.
3871 my $check_aux = 0;
3872 if ($relative_dir eq '.'
3873 && $config_aux_dir_set_in_configure_ac)
3874 {
3875 if (! &is_make_dir ($config_aux_dir))
3876 {
3877 $check_aux = 1;
3878 }
3879 }
3880 foreach my $cfile (@common_files)
3881 {
3882 if (dir_has_case_matching_file ($relative_dir, $cfile)
3883 # The file might be absent, but if it can be built it's ok.
3884 || rule $cfile)
3885 {
3886 &push_dist_common ($cfile);
3887 }
3889 # Don't use `elsif' here because a file might meaningfully
3890 # appear in both directories.
3891 if ($check_aux && dir_has_case_matching_file ($config_aux_dir, $cfile))
3892 {
3893 &push_dist_common ("$config_aux_dir/$cfile")
3894 }
3895 }
3897 # We might copy elements from $configure_dist_common to
3898 # %dist_common if we think we need to. If the file appears in our
3899 # directory, we would have discovered it already, so we don't
3900 # check that. But if the file is in a subdir without a Makefile,
3901 # we want to distribute it here if we are doing `.'. Ugly!
3902 if ($relative_dir eq '.')
3903 {
3904 foreach my $file (split (' ' , $configure_dist_common))
3905 {
3906 push_dist_common ($file)
3907 unless is_make_dir (dirname ($file));
3908 }
3909 }
3911 # Files to distributed. Don't use ->value_as_list_recursive
3912 # as it recursively expands `$(dist_pkgdata_DATA)' etc.
3913 my @dist_common = split (' ', rvar ('DIST_COMMON')->variable_value);
3914 @dist_common = uniq (sort for_dist_common (@dist_common));
3915 variable_delete 'DIST_COMMON';
3916 define_pretty_variable ('DIST_COMMON', TRUE, INTERNAL, @dist_common);
3918 # Now that we've processed DIST_COMMON, disallow further attempts
3919 # to set it.
3920 $handle_dist_run = 1;
3922 # Scan EXTRA_DIST to see if we need to distribute anything from a
3923 # subdir. If so, add it to the list. I didn't want to do this
3924 # originally, but there were so many requests that I finally
3925 # relented.
3926 my $extra_dist = var ('EXTRA_DIST');
3928 $transform{'DISTCHECK-HOOK'} = !! rule 'distcheck-hook';
3929 $transform{'GETTEXT'} = $seen_gettext && !$seen_gettext_external;
3931 # If the target `dist-hook' exists, make sure it is run. This
3932 # allows users to do random weird things to the distribution
3933 # before it is packaged up.
3934 push (@dist_targets, 'dist-hook')
3935 if user_phony_rule 'dist-hook';
3936 $transform{'DIST-TARGETS'} = join (' ', @dist_targets);
3938 my $flm = option ('filename-length-max');
3939 my $filename_filter = $flm ? '.' x $flm->[1] : '';
3941 $output_rules .= &file_contents ('distdir',
3942 new Automake::Location,
3943 %transform,
3944 FILENAME_FILTER => $filename_filter);
3945 }
3948 # check_directory ($NAME, $WHERE)
3949 # -------------------------------
3950 # Ensure $NAME is a directory, and that it uses a sane name.
3951 # Use $WHERE as a location in the diagnostic, if any.
3952 sub check_directory ($$)
3953 {
3954 my ($dir, $where) = @_;
3956 error $where, "required directory $relative_dir/$dir does not exist"
3957 unless -d "$relative_dir/$dir";
3959 # If an `obj/' directory exists, BSD make will enter it before
3960 # reading `Makefile'. Hence the `Makefile' in the current directory
3961 # will not be read.
3962 #
3963 # % cat Makefile
3964 # all:
3965 # echo Hello
3966 # % cat obj/Makefile
3967 # all:
3968 # echo World
3969 # % make # GNU make
3970 # echo Hello
3971 # Hello
3972 # % pmake # BSD make
3973 # echo World
3974 # World
3975 msg ('portability', $where,
3976 "naming a subdirectory `obj' causes troubles with BSD make")
3977 if $dir eq 'obj';
3979 # `aux' is probably the most important of the following forbidden name,
3980 # since it's tempting to use it as an AC_CONFIG_AUX_DIR.
3981 msg ('portability', $where,
3982 "name `$dir' is reserved on W32 and DOS platforms")
3983 if grep (/^\Q$dir\E$/i, qw/aux lpt1 lpt2 lpt3 com1 com2 com3 com4 con prn/);
3984 }
3986 # check_directories_in_var ($VARIABLE)
3987 # ------------------------------------
3988 # Recursively check all items in variables $VARIABLE as directories
3989 sub check_directories_in_var ($)
3990 {
3991 my ($var) = @_;
3992 $var->traverse_recursively
3993 (sub
3994 {
3995 my ($var, $val, $cond, $full_cond) = @_;
3996 check_directory ($val, $var->rdef ($cond)->location);
3997 return ();
3998 },
3999 undef,
4000 skip_ac_subst => 1);
4001 }
4003 # &handle_subdirs ()
4004 # ------------------
4005 # Handle subdirectories.
4006 sub handle_subdirs ()
4007 {
4008 my $subdirs = var ('SUBDIRS');
4009 return
4010 unless $subdirs;
4012 check_directories_in_var $subdirs;
4014 my $dsubdirs = var ('DIST_SUBDIRS');
4015 check_directories_in_var $dsubdirs
4016 if $dsubdirs;
4018 $output_rules .= &file_contents ('subdirs', new Automake::Location);
4019 rvar ('RECURSIVE_TARGETS')->rdef (TRUE)->{'pretty'} = VAR_SORTED; # Gross!
4020 }
4023 # ($REGEN, @DEPENDENCIES)
4024 # &scan_aclocal_m4
4025 # ----------------
4026 # If aclocal.m4 creation is automated, return the list of its dependencies.
4027 sub scan_aclocal_m4 ()
4028 {
4029 my $regen_aclocal = 0;
4031 set_seen 'CONFIG_STATUS_DEPENDENCIES';
4032 set_seen 'CONFIGURE_DEPENDENCIES';
4034 if (-f 'aclocal.m4')
4035 {
4036 &define_variable ("ACLOCAL_M4", '$(top_srcdir)/aclocal.m4', INTERNAL);
4038 my $aclocal = new Automake::XFile "< aclocal.m4";
4039 my $line = $aclocal->getline;
4040 $regen_aclocal = $line =~ 'generated automatically by aclocal';
4041 }
4043 my @ac_deps = ();
4045 if (set_seen ('ACLOCAL_M4_SOURCES'))
4046 {
4047 push (@ac_deps, '$(ACLOCAL_M4_SOURCES)');
4048 msg_var ('obsolete', 'ACLOCAL_M4_SOURCES',
4049 "`ACLOCAL_M4_SOURCES' is obsolete.\n"
4050 . "It should be safe to simply remove it.");
4051 }
4053 # Note that it might be possible that aclocal.m4 doesn't exist but
4054 # should be auto-generated. This case probably isn't very
4055 # important.
4057 return ($regen_aclocal, @ac_deps);
4058 }
4061 # Helper function for substitute_ac_subst_variables.
4062 sub substitute_ac_subst_variables_worker($)
4063 {
4064 my ($token) = @_;
4065 return "\@$token\@" if var $token;
4066 return "\${$token\}";
4067 }
4069 # substitute_ac_subst_variables ($TEXT)
4070 # -------------------------------------
4071 # Replace any occurrence of ${FOO} in $TEXT by @FOO@ if FOO is an AC_SUBST
4072 # variable.
4073 sub substitute_ac_subst_variables ($)
4074 {
4075 my ($text) = @_;
4076 $text =~ s/\${([^ \t=:+{}]+)}/&substitute_ac_subst_variables_worker ($1)/ge;
4077 return $text;
4078 }
4080 # @DEPENDENCIES
4081 # &prepend_srcdir (@INPUTS)
4082 # -------------------------
4083 # Prepend $(srcdir) or $(top_srcdir) to all @INPUTS. The idea is that
4084 # if an input file has a directory part the same as the current
4085 # directory, then the directory part is simply replaced by $(srcdir).
4086 # But if the directory part is different, then $(top_srcdir) is
4087 # prepended.
4088 sub prepend_srcdir (@)
4089 {
4090 my (@inputs) = @_;
4091 my @newinputs;
4093 foreach my $single (@inputs)
4094 {
4095 if (dirname ($single) eq $relative_dir)
4096 {
4097 push (@newinputs, '$(srcdir)/' . basename ($single));
4098 }
4099 else
4100 {
4101 push (@newinputs, '$(top_srcdir)/' . $single);
4102 }
4103 }
4104 return @newinputs;
4105 }
4107 # @DEPENDENCIES
4108 # rewrite_inputs_into_dependencies ($OUTPUT, @INPUTS)
4109 # ---------------------------------------------------
4110 # Compute a list of dependencies appropriate for the rebuild
4111 # rule of
4112 # AC_CONFIG_FILES($OUTPUT:$INPUT[0]:$INPUTS[1]:...)
4113 # Also distribute $INPUTs which are not built by another AC_CONFIG_FOOS.
4114 sub rewrite_inputs_into_dependencies ($@)
4115 {
4116 my ($file, @inputs) = @_;
4117 my @res = ();
4119 for my $i (@inputs)
4120 {
4121 # We cannot create dependencies on shell variables.
4122 next if (substitute_ac_subst_variables $i) =~ /\$/;
4124 if (exists $ac_config_files_location{$i} && $i ne $file)
4125 {
4126 my $di = dirname $i;
4127 if ($di eq $relative_dir)
4128 {
4129 $i = basename $i;
4130 }
4131 # In the top-level Makefile we do not use $(top_builddir), because
4132 # we are already there, and since the targets are built without
4133 # a $(top_builddir), it helps BSD Make to match them with
4134 # dependencies.
4135 elsif ($relative_dir ne '.')
4136 {
4137 $i = '$(top_builddir)/' . $i;
4138 }
4139 }
4140 else
4141 {
4142 msg ('error', $ac_config_files_location{$file},
4143 "required file `$i' not found")
4144 unless $i =~ /\$/ || exists $output_files{$i} || -f $i;
4145 ($i) = prepend_srcdir ($i);
4146 push_dist_common ($i);
4147 }
4148 push @res, $i;
4149 }
4150 return @res;
4151 }
4155 # &handle_configure ($MAKEFILE_AM, $MAKEFILE_IN, $MAKEFILE, @INPUTS)
4156 # ------------------------------------------------------------------
4157 # Handle remaking and configure stuff.
4158 # We need the name of the input file, to do proper remaking rules.
4159 sub handle_configure ($$$@)
4160 {
4161 my ($makefile_am, $makefile_in, $makefile, @inputs) = @_;
4163 prog_error 'empty @inputs'
4164 unless @inputs;
4166 my ($rel_makefile_am, $rel_makefile_in) = prepend_srcdir ($makefile_am,
4167 $makefile_in);
4168 my $rel_makefile = basename $makefile;
4170 my $colon_infile = ':' . join (':', @inputs);
4171 $colon_infile = '' if $colon_infile eq ":$makefile.in";
4172 my @rewritten = rewrite_inputs_into_dependencies ($makefile, @inputs);
4173 my ($regen_aclocal_m4, @aclocal_m4_deps) = scan_aclocal_m4;
4174 define_pretty_variable ('am__aclocal_m4_deps', TRUE, INTERNAL,
4175 @configure_deps, @aclocal_m4_deps,
4176 '$(top_srcdir)/' . $configure_ac);
4177 my @configuredeps = ('$(am__aclocal_m4_deps)', '$(CONFIGURE_DEPENDENCIES)');
4178 push @configuredeps, '$(ACLOCAL_M4)' if -f 'aclocal.m4';
4179 define_pretty_variable ('am__configure_deps', TRUE, INTERNAL,
4180 @configuredeps);
4182 my $automake_options = '--' . (global_option 'cygnus' ? 'cygnus' : $strictness_name)
4183 . (global_option 'no-dependencies' ? ' --ignore-deps' : '')
4184 . (global_option 'silent-rules' ? ' --silent-rules' : '');
4186 $output_rules .= file_contents
4187 ('configure',
4188 new Automake::Location,
4189 MAKEFILE => $rel_makefile,
4190 'MAKEFILE-DEPS' => "@rewritten",
4191 'CONFIG-MAKEFILE' => ($relative_dir eq '.') ? '$@' : '$(subdir)/$@',
4192 'MAKEFILE-IN' => $rel_makefile_in,
4193 'MAKEFILE-IN-DEPS' => "@include_stack",
4194 'MAKEFILE-AM' => $rel_makefile_am,
4195 'AUTOMAKE-OPTIONS' => $automake_options,
4196 'MAKEFILE-AM-SOURCES' => "$makefile$colon_infile",
4197 'REGEN-ACLOCAL-M4' => $regen_aclocal_m4,
4198 VERBOSE => verbose_flag ('GEN'));
4200 if ($relative_dir eq '.')
4201 {
4202 &push_dist_common ('acconfig.h')
4203 if -f 'acconfig.h';
4204 }
4206 # If we have a configure header, require it.
4207 my $hdr_index = 0;
4208 my @distclean_config;
4209 foreach my $spec (@config_headers)
4210 {
4211 $hdr_index += 1;
4212 # $CONFIG_H_PATH: config.h from top level.
4213 my ($config_h_path, @ins) = split_config_file_spec ($spec);
4214 my $config_h_dir = dirname ($config_h_path);
4216 # If the header is in the current directory we want to build
4217 # the header here. Otherwise, if we're at the topmost
4218 # directory and the header's directory doesn't have a
4219 # Makefile, then we also want to build the header.
4220 if ($relative_dir eq $config_h_dir
4221 || ($relative_dir eq '.' && ! &is_make_dir ($config_h_dir)))
4222 {
4223 my ($cn_sans_dir, $stamp_dir);
4224 if ($relative_dir eq $config_h_dir)
4225 {
4226 $cn_sans_dir = basename ($config_h_path);
4227 $stamp_dir = '';
4228 }
4229 else
4230 {
4231 $cn_sans_dir = $config_h_path;
4232 if ($config_h_dir eq '.')
4233 {
4234 $stamp_dir = '';
4235 }
4236 else
4237 {
4238 $stamp_dir = $config_h_dir . '/';
4239 }
4240 }
4242 # This will also distribute all inputs.
4243 @ins = rewrite_inputs_into_dependencies ($config_h_path, @ins);
4245 # Cannot define rebuild rules for filenames with shell variables.
4246 next if (substitute_ac_subst_variables $config_h_path) =~ /\$/;
4248 # Header defined in this directory.
4249 my @files;
4250 if (-f $config_h_path . '.top')
4251 {
4252 push (@files, "$cn_sans_dir.top");
4253 }
4254 if (-f $config_h_path . '.bot')
4255 {
4256 push (@files, "$cn_sans_dir.bot");
4257 }
4259 push_dist_common (@files);
4261 # For now, acconfig.h can only appear in the top srcdir.
4262 if (-f 'acconfig.h')
4263 {
4264 push (@files, '$(top_srcdir)/acconfig.h');
4265 }
4267 my $stamp = "${stamp_dir}stamp-h${hdr_index}";
4268 $output_rules .=
4269 file_contents ('remake-hdr',
4270 new Automake::Location,
4271 FILES => "@files",
4272 CONFIG_H => $cn_sans_dir,
4273 CONFIG_HIN => $ins[0],
4274 CONFIG_H_DEPS => "@ins",
4275 CONFIG_H_PATH => $config_h_path,
4276 STAMP => "$stamp");
4278 push @distclean_config, $cn_sans_dir, $stamp;
4279 }
4280 }
4282 $output_rules .= file_contents ('clean-hdr',
4283 new Automake::Location,
4284 FILES => "@distclean_config")
4285 if @distclean_config;
4287 # Distribute and define mkinstalldirs only if it is already present
4288 # in the package, for backward compatibility (some people may still
4289 # use $(mkinstalldirs)).
4290 my $mkidpath = "$config_aux_dir/mkinstalldirs";
4291 if (-f $mkidpath)
4292 {
4293 # Use require_file so that any existing script gets updated
4294 # by --force-missing.
4295 require_conf_file ($mkidpath, FOREIGN, 'mkinstalldirs');
4296 define_variable ('mkinstalldirs',
4297 "\$(SHELL) $am_config_aux_dir/mkinstalldirs", INTERNAL);
4298 }
4299 else
4300 {
4301 # Use $(install_sh), not $(MKDIR_P) because the latter requires
4302 # at least one argument, and $(mkinstalldirs) used to work
4303 # even without arguments (e.g. $(mkinstalldirs) $(conditional_dir)).
4304 define_variable ('mkinstalldirs', '$(install_sh) -d', INTERNAL);
4305 }
4307 reject_var ('CONFIG_HEADER',
4308 "`CONFIG_HEADER' is an anachronism; now determined "
4309 . "automatically\nfrom `$configure_ac'");
4311 my @config_h;
4312 foreach my $spec (@config_headers)
4313 {
4314 my ($out, @ins) = split_config_file_spec ($spec);
4315 # Generate CONFIG_HEADER define.
4316 if ($relative_dir eq dirname ($out))
4317 {
4318 push @config_h, basename ($out);
4319 }
4320 else
4321 {
4322 push @config_h, "\$(top_builddir)/$out";
4323 }
4324 }
4325 define_variable ("CONFIG_HEADER", "@config_h", INTERNAL)
4326 if @config_h;
4328 # Now look for other files in this directory which must be remade
4329 # by config.status, and generate rules for them.
4330 my @actual_other_files = ();
4331 # These get cleaned only in a VPATH build.
4332 my @actual_other_vpath_files = ();
4333 foreach my $lfile (@other_input_files)
4334 {
4335 my $file;
4336 my @inputs;
4337 if ($lfile =~ /^([^:]*):(.*)$/)
4338 {
4339 # This is the ":" syntax of AC_OUTPUT.
4340 $file = $1;
4341 @inputs = split (':', $2);
4342 }
4343 else
4344 {
4345 # Normal usage.
4346 $file = $lfile;
4347 @inputs = $file . '.in';
4348 }
4350 # Automake files should not be stored in here, but in %MAKE_LIST.
4351 prog_error ("$lfile in \@other_input_files\n"
4352 . "\@other_input_files = (@other_input_files)")
4353 if -f $file . '.am';
4355 my $local = basename ($file);
4357 # We skip files that aren't in this directory. However, if
4358 # the file's directory does not have a Makefile, and we are
4359 # currently doing `.', then we create a rule to rebuild the
4360 # file in the subdir.
4361 my $fd = dirname ($file);
4362 if ($fd ne $relative_dir)
4363 {
4364 if ($relative_dir eq '.' && ! &is_make_dir ($fd))
4365 {
4366 $local = $file;
4367 }
4368 else
4369 {
4370 next;
4371 }
4372 }
4374 my @rewritten_inputs = rewrite_inputs_into_dependencies ($file, @inputs);
4376 # Cannot output rules for shell variables.
4377 next if (substitute_ac_subst_variables $local) =~ /\$/;
4379 my $condstr = '';
4380 my $cond = $ac_config_files_condition{$lfile};
4381 if (defined $cond)
4382 {
4383 $condstr = $cond->subst_string;
4384 Automake::Rule::define ($local, $configure_ac, RULE_AUTOMAKE, $cond,
4385 $ac_config_files_location{$file});
4386 }
4387 $output_rules .= ($condstr . $local . ': '
4388 . '$(top_builddir)/config.status '
4389 . "@rewritten_inputs\n"
4390 . $condstr . "\t"
4391 . 'cd $(top_builddir) && '
4392 . '$(SHELL) ./config.status '
4393 . ($relative_dir eq '.' ? '' : '$(subdir)/')
4394 . '$@'
4395 . "\n");
4396 push (@actual_other_files, $local);
4397 }
4399 # For links we should clean destinations and distribute sources.
4400 foreach my $spec (@config_links)
4401 {
4402 my ($link, $file) = split /:/, $spec;
4403 # Some people do AC_CONFIG_LINKS($computed). We only handle
4404 # the DEST:SRC form.
4405 next unless $file;
4406 my $where = $ac_config_files_location{$link};
4408 # Skip destinations that contain shell variables.
4409 if ((substitute_ac_subst_variables $link) !~ /\$/)
4410 {
4411 # We skip links that aren't in this directory. However, if
4412 # the link's directory does not have a Makefile, and we are
4413 # currently doing `.', then we add the link to CONFIG_CLEAN_FILES
4414 # in `.'s Makefile.in.
4415 my $local = basename ($link);
4416 my $fd = dirname ($link);
4417 if ($fd ne $relative_dir)
4418 {
4419 if ($relative_dir eq '.' && ! &is_make_dir ($fd))
4420 {
4421 $local = $link;
4422 }
4423 else
4424 {
4425 $local = undef;
4426 }
4427 }
4428 if ($file ne $link)
4429 {
4430 push @actual_other_files, $local if $local;
4431 }
4432 else
4433 {
4434 push @actual_other_vpath_files, $local if $local;
4435 }
4436 }
4438 # Do not process sources that contain shell variables.
4439 if ((substitute_ac_subst_variables $file) !~ /\$/)
4440 {
4441 my $fd = dirname ($file);
4443 # We distribute files that are in this directory.
4444 # At the top-level (`.') we also distribute files whose
4445 # directory does not have a Makefile.
4446 if (($fd eq $relative_dir)
4447 || ($relative_dir eq '.' && ! &is_make_dir ($fd)))
4448 {
4449 # The following will distribute $file as a side-effect when
4450 # it is appropriate (i.e., when $file is not already an output).
4451 # We do not need the result, just the side-effect.
4452 rewrite_inputs_into_dependencies ($link, $file);
4453 }
4454 }
4455 }
4457 # These files get removed by "make distclean".
4458 define_pretty_variable ('CONFIG_CLEAN_FILES', TRUE, INTERNAL,
4459 @actual_other_files);
4460 define_pretty_variable ('CONFIG_CLEAN_VPATH_FILES', TRUE, INTERNAL,
4461 @actual_other_vpath_files);
4462 }
4464 # Handle C headers.
4465 sub handle_headers
4466 {
4467 my @r = &am_install_var ('-defaultdist', 'header', 'HEADERS', 'include',
4468 'oldinclude', 'pkginclude',
4469 'noinst', 'check');
4470 foreach (@r)
4471 {
4472 next unless $_->[1] =~ /\..*$/;
4473 &saw_extension ($&);
4474 }
4475 }
4477 sub handle_gettext
4478 {
4479 return if ! $seen_gettext || $relative_dir ne '.';
4481 my $subdirs = var 'SUBDIRS';
4483 if (! $subdirs)
4484 {
4485 err_ac "AM_GNU_GETTEXT used but SUBDIRS not defined";
4486 return;
4487 }
4489 # Perform some sanity checks to help users get the right setup.
4490 # We disable these tests when po/ doesn't exist in order not to disallow
4491 # unusual gettext setups.
4492 #
4493 # Bruno Haible:
4494 # | The idea is:
4495 # |
4496 # | 1) If a package doesn't have a directory po/ at top level, it
4497 # | will likely have multiple po/ directories in subpackages.
4498 # |
4499 # | 2) It is useful to warn for the absence of intl/ if AM_GNU_GETTEXT
4500 # | is used without 'external'. It is also useful to warn for the
4501 # | presence of intl/ if AM_GNU_GETTEXT([external]) is used. Both
4502 # | warnings apply only to the usual layout of packages, therefore
4503 # | they should both be disabled if no po/ directory is found at
4504 # | top level.
4506 if (-d 'po')
4507 {
4508 my @subdirs = $subdirs->value_as_list_recursive;
4510 msg_var ('syntax', $subdirs,
4511 "AM_GNU_GETTEXT used but `po' not in SUBDIRS")
4512 if ! grep ($_ eq 'po', @subdirs);
4514 # intl/ is not required when AM_GNU_GETTEXT is called with the
4515 # `external' option and AM_GNU_GETTEXT_INTL_SUBDIR is not called.
4516 msg_var ('syntax', $subdirs,
4517 "AM_GNU_GETTEXT used but `intl' not in SUBDIRS")
4518 if (! ($seen_gettext_external && ! $seen_gettext_intl)
4519 && ! grep ($_ eq 'intl', @subdirs));
4521 # intl/ should not be used with AM_GNU_GETTEXT([external]), except
4522 # if AM_GNU_GETTEXT_INTL_SUBDIR is called.
4523 msg_var ('syntax', $subdirs,
4524 "`intl' should not be in SUBDIRS when "
4525 . "AM_GNU_GETTEXT([external]) is used")
4526 if ($seen_gettext_external && ! $seen_gettext_intl
4527 && grep ($_ eq 'intl', @subdirs));
4528 }
4530 require_file ($ac_gettext_location, GNU, 'ABOUT-NLS');
4531 }
4533 # Handle footer elements.
4534 sub handle_footer
4535 {
4536 reject_rule ('.SUFFIXES',
4537 "use variable `SUFFIXES', not target `.SUFFIXES'");
4539 # Note: AIX 4.1 /bin/make will fail if any suffix rule appears
4540 # before .SUFFIXES. So we make sure that .SUFFIXES appears before
4541 # anything else, by sticking it right after the default: target.
4542 $output_header .= ".SUFFIXES:\n";
4543 my $suffixes = var 'SUFFIXES';
4544 my @suffixes = Automake::Rule::suffixes;
4545 if (@suffixes || $suffixes)
4546 {
4547 # Make sure SUFFIXES has unique elements. Sort them to ensure
4548 # the output remains consistent. However, $(SUFFIXES) is
4549 # always at the start of the list, unsorted. This is done
4550 # because make will choose rules depending on the ordering of
4551 # suffixes, and this lets the user have some control. Push
4552 # actual suffixes, and not $(SUFFIXES). Some versions of make
4553 # do not like variable substitutions on the .SUFFIXES line.
4554 my @user_suffixes = ($suffixes
4555 ? $suffixes->value_as_list_recursive : ());
4557 my %suffixes = map { $_ => 1 } @suffixes;
4558 delete @suffixes{@user_suffixes};
4560 $output_header .= (".SUFFIXES: "
4561 . join (' ', @user_suffixes, sort keys %suffixes)
4562 . "\n");
4563 }
4565 $output_trailer .= file_contents ('footer', new Automake::Location);
4566 }
4569 # Generate `make install' rules.
4570 sub handle_install ()
4571 {
4572 $output_rules .= &file_contents
4573 ('install',
4574 new Automake::Location,
4575 maybe_BUILT_SOURCES => (set_seen ('BUILT_SOURCES')
4576 ? (" \$(BUILT_SOURCES)\n"
4577 . "\t\$(MAKE) \$(AM_MAKEFLAGS)")
4578 : ''),
4579 'installdirs-local' => (user_phony_rule 'installdirs-local'
4580 ? ' installdirs-local' : ''),
4581 am__installdirs => variable_value ('am__installdirs') || '');
4582 }
4585 # Deal with all and all-am.
4586 sub handle_all ($)
4587 {
4588 my ($makefile) = @_;
4590 # Output `all-am'.
4592 # Put this at the beginning for the sake of non-GNU makes. This
4593 # is still wrong if these makes can run parallel jobs. But it is
4594 # right enough.
4595 unshift (@all, basename ($makefile));
4597 foreach my $spec (@config_headers)
4598 {
4599 my ($out, @ins) = split_config_file_spec ($spec);
4600 push (@all, basename ($out))
4601 if dirname ($out) eq $relative_dir;
4602 }
4604 # Install `all' hooks.
4605 push (@all, "all-local")
4606 if user_phony_rule "all-local";
4608 &pretty_print_rule ("all-am:", "\t\t", @all);
4609 &depend ('.PHONY', 'all-am', 'all');
4612 # Output `all'.
4614 my @local_headers = ();
4615 push @local_headers, '$(BUILT_SOURCES)'
4616 if var ('BUILT_SOURCES');
4617 foreach my $spec (@config_headers)
4618 {
4619 my ($out, @ins) = split_config_file_spec ($spec);
4620 push @local_headers, basename ($out)
4621 if dirname ($out) eq $relative_dir;
4622 }
4624 if (@local_headers)
4625 {
4626 # We need to make sure config.h is built before we recurse.
4627 # We also want to make sure that built sources are built
4628 # before any ordinary `all' targets are run. We can't do this
4629 # by changing the order of dependencies to the "all" because
4630 # that breaks when using parallel makes. Instead we handle
4631 # things explicitly.
4632 $output_all .= ("all: @local_headers"
4633 . "\n\t"
4634 . '$(MAKE) $(AM_MAKEFLAGS) '
4635 . (var ('SUBDIRS') ? 'all-recursive' : 'all-am')
4636 . "\n\n");
4637 depend ('.MAKE', 'all');
4638 }
4639 else
4640 {
4641 $output_all .= "all: " . (var ('SUBDIRS')
4642 ? 'all-recursive' : 'all-am') . "\n\n";
4643 }
4644 }
4647 # &do_check_merge_target ()
4648 # -------------------------
4649 # Handle check merge target specially.
4650 sub do_check_merge_target ()
4651 {
4652 # Include user-defined local form of target.
4653 push @check_tests, 'check-local'
4654 if user_phony_rule 'check-local';
4656 # In --cygnus mode, check doesn't depend on all.
4657 if (option 'cygnus')
4658 {
4659 # Just run the local check rules.
4660 pretty_print_rule ('check-am:', "\t\t", @check);
4661 }
4662 else
4663 {
4664 # The check target must depend on the local equivalent of
4665 # `all', to ensure all the primary targets are built. Then it
4666 # must build the local check rules.
4667 $output_rules .= "check-am: all-am\n";
4668 if (@check)
4669 {
4670 pretty_print_rule ("\t\$(MAKE) \$(AM_MAKEFLAGS)", "\t ",
4671 @check);
4672 depend ('.MAKE', 'check-am');
4673 }
4674 }
4675 if (@check_tests)
4676 {
4677 pretty_print_rule ("\t\$(MAKE) \$(AM_MAKEFLAGS)", "\t ",
4678 @check_tests);
4679 depend ('.MAKE', 'check-am');
4680 }
4682 depend '.PHONY', 'check', 'check-am';
4683 # Handle recursion. We have to honor BUILT_SOURCES like for `all:'.
4684 $output_rules .= ("check: "
4685 . (var ('BUILT_SOURCES')
4686 ? "\$(BUILT_SOURCES)\n\t\$(MAKE) \$(AM_MAKEFLAGS) "
4687 : '')
4688 . (var ('SUBDIRS') ? 'check-recursive' : 'check-am')
4689 . "\n");
4690 depend ('.MAKE', 'check')
4691 if var ('BUILT_SOURCES');
4692 }
4694 # handle_clean ($MAKEFILE)
4695 # ------------------------
4696 # Handle all 'clean' targets.
4697 sub handle_clean ($)
4698 {
4699 my ($makefile) = @_;
4701 # Clean the files listed in user variables if they exist.
4702 $clean_files{'$(MOSTLYCLEANFILES)'} = MOSTLY_CLEAN
4703 if var ('MOSTLYCLEANFILES');
4704 $clean_files{'$(CLEANFILES)'} = CLEAN
4705 if var ('CLEANFILES');
4706 $clean_files{'$(DISTCLEANFILES)'} = DIST_CLEAN
4707 if var ('DISTCLEANFILES');
4708 $clean_files{'$(MAINTAINERCLEANFILES)'} = MAINTAINER_CLEAN
4709 if var ('MAINTAINERCLEANFILES');
4711 # Built sources are automatically removed by maintainer-clean.
4712 $clean_files{'$(BUILT_SOURCES)'} = MAINTAINER_CLEAN
4713 if var ('BUILT_SOURCES');
4715 # Compute a list of "rm"s to run for each target.
4716 my %rms = (MOSTLY_CLEAN, [],
4717 CLEAN, [],
4718 DIST_CLEAN, [],
4719 MAINTAINER_CLEAN, []);
4721 foreach my $file (keys %clean_files)
4722 {
4723 my $when = $clean_files{$file};
4724 prog_error 'invalid entry in %clean_files'
4725 unless exists $rms{$when};
4727 my $rm = "rm -f $file";
4728 # If file is a variable, make sure when don't call `rm -f' without args.
4729 $rm ="test -z \"$file\" || $rm"
4730 if ($file =~ /^\s*\$(\(.*\)|\{.*\})\s*$/);
4732 push @{$rms{$when}}, "\t-$rm\n";
4733 }
4735 $output_rules .= &file_contents
4736 ('clean',
4737 new Automake::Location,
4738 MOSTLYCLEAN_RMS => join ('', sort @{$rms{&MOSTLY_CLEAN}}),
4739 CLEAN_RMS => join ('', sort @{$rms{&CLEAN}}),
4740 DISTCLEAN_RMS => join ('', sort @{$rms{&DIST_CLEAN}}),
4741 MAINTAINER_CLEAN_RMS => join ('', sort @{$rms{&MAINTAINER_CLEAN}}),
4742 MAKEFILE => basename $makefile,
4743 );
4744 }
4747 # &target_cmp ($A, $B)
4748 # --------------------
4749 # Subroutine for &handle_factored_dependencies to let `.PHONY' and
4750 # other `.TARGETS' be last.
4751 sub target_cmp
4752 {
4753 return 0 if $a eq $b;
4755 my $a1 = substr ($a, 0, 1);
4756 my $b1 = substr ($b, 0, 1);
4757 if ($a1 ne $b1)
4758 {
4759 return -1 if $b1 eq '.';
4760 return 1 if $a1 eq '.';
4761 }
4762 return $a cmp $b;
4763 }
4766 # &handle_factored_dependencies ()
4767 # --------------------------------
4768 # Handle everything related to gathered targets.
4769 sub handle_factored_dependencies
4770 {
4771 # Reject bad hooks.
4772 foreach my $utarg ('uninstall-data-local', 'uninstall-data-hook',
4773 'uninstall-exec-local', 'uninstall-exec-hook',
4774 'uninstall-dvi-local',
4775 'uninstall-html-local',
4776 'uninstall-info-local',
4777 'uninstall-pdf-local',
4778 'uninstall-ps-local')
4779 {
4780 my $x = $utarg;
4781 $x =~ s/-.*-/-/;
4782 reject_rule ($utarg, "use `$x', not `$utarg'");
4783 }
4785 reject_rule ('install-local',
4786 "use `install-data-local' or `install-exec-local', "
4787 . "not `install-local'");
4789 reject_rule ('install-hook',
4790 "use `install-data-hook' or `install-exec-hook', "
4791 . "not `install-hook'");
4793 # Install the -local hooks.
4794 foreach (keys %dependencies)
4795 {
4796 # Hooks are installed on the -am targets.
4797 s/-am$// or next;
4798 depend ("$_-am", "$_-local")
4799 if user_phony_rule "$_-local";
4800 }
4802 # Install the -hook hooks.
4803 # FIXME: Why not be as liberal as we are with -local hooks?
4804 foreach ('install-exec', 'install-data', 'uninstall')
4805 {
4806 if (user_phony_rule "$_-hook")
4807 {
4808 depend ('.MAKE', "$_-am");
4809 register_action("$_-am",
4810 ("\t\@\$(NORMAL_INSTALL)\n"
4811 . "\t\$(MAKE) \$(AM_MAKEFLAGS) $_-hook"));
4812 }
4813 }
4815 # All the required targets are phony.
4816 depend ('.PHONY', keys %required_targets);
4818 # Actually output gathered targets.
4819 foreach (sort target_cmp keys %dependencies)
4820 {
4821 # If there is nothing about this guy, skip it.
4822 next
4823 unless (@{$dependencies{$_}}
4824 || $actions{$_}
4825 || $required_targets{$_});
4827 # Define gathered targets in undefined conditions.
4828 # FIXME: Right now we must handle .PHONY as an exception,
4829 # because people write things like
4830 # .PHONY: myphonytarget
4831 # to append dependencies. This would not work if Automake
4832 # refrained from defining its own .PHONY target as it does
4833 # with other overridden targets.
4834 # Likewise for `.MAKE'.
4835 my @undefined_conds = (TRUE,);
4836 if ($_ ne '.PHONY' && $_ ne '.MAKE')
4837 {
4838 @undefined_conds =
4839 Automake::Rule::define ($_, 'internal',
4840 RULE_AUTOMAKE, TRUE, INTERNAL);
4841 }
4842 my @uniq_deps = uniq (sort @{$dependencies{$_}});
4843 foreach my $cond (@undefined_conds)
4844 {
4845 my $condstr = $cond->subst_string;
4846 &pretty_print_rule ("$condstr$_:", "$condstr\t", @uniq_deps);
4847 $output_rules .= $actions{$_} if defined $actions{$_};
4848 $output_rules .= "\n";
4849 }
4850 }
4851 }
4854 # &handle_tests_dejagnu ()
4855 # ------------------------
4856 sub handle_tests_dejagnu
4857 {
4858 push (@check_tests, 'check-DEJAGNU');
4859 $output_rules .= file_contents ('dejagnu', new Automake::Location);
4860 }
4863 # Handle TESTS variable and other checks.
4864 sub handle_tests
4865 {
4866 if (option 'dejagnu')
4867 {
4868 &handle_tests_dejagnu;
4869 }
4870 else
4871 {
4872 foreach my $c ('DEJATOOL', 'RUNTEST', 'RUNTESTFLAGS')
4873 {
4874 reject_var ($c, "`$c' defined but `dejagnu' not in "
4875 . "`AUTOMAKE_OPTIONS'");
4876 }
4877 }
4879 if (var ('TESTS'))
4880 {
4881 push (@check_tests, 'check-TESTS');
4882 $output_rules .= &file_contents ('check', new Automake::Location,
4883 COLOR => !! option 'color-tests',
4884 PARALLEL_TESTS => !! option 'parallel-tests');
4886 # Tests that are known programs should have $(EXEEXT) appended.
4887 # For matching purposes, we need to adjust XFAIL_TESTS as well.
4888 append_exeext { exists $known_programs{$_[0]} } 'TESTS';
4889 append_exeext { exists $known_programs{$_[0]} } 'XFAIL_TESTS'
4890 if (var ('XFAIL_TESTS'));
4892 if (option 'parallel-tests')
4893 {
4894 define_variable ('TEST_SUITE_LOG', 'test-suite.log', INTERNAL);
4895 define_variable ('TEST_SUITE_HTML', '$(TEST_SUITE_LOG:.log=.html)', INTERNAL);
4896 my $suff = '.test';
4897 my $at_exeext = '';
4898 if (exists $configure_vars{'EXEEXT'})
4899 {
4900 $at_exeext = subst ('EXEEXT');
4901 $suff = $at_exeext . ' ' . $suff;
4902 }
4903 define_variable ('TEST_EXTENSIONS', $suff, INTERNAL);
4904 # FIXME: this mishandles conditions.
4905 my @test_suffixes = (var 'TEST_EXTENSIONS')->value_as_list_recursive;
4906 if (exists $configure_vars{'EXEEXT'})
4907 {
4908 unshift (@test_suffixes, $at_exeext)
4909 unless $test_suffixes[0] eq $at_exeext;
4910 }
4911 unshift (@test_suffixes, '');
4913 transform_variable_recursively
4914 ('TESTS', 'TEST_LOGS', 'am__testlogs', 1, INTERNAL,
4915 sub {
4916 my ($subvar, $val, $cond, $full_cond) = @_;
4917 my $obj = $val;
4918 return $obj
4919 if $val =~ /^\@.*\@$/;
4920 $obj =~ s/\$\(EXEEXT\)$//o;
4922 if ($val =~ /(\$\((top_)?srcdir\))\//o)
4923 {
4924 msg ('error', $subvar->rdef ($cond)->location,
4925 "parallel-tests: using `$1' in TESTS is currently broken: `$val'");
4926 }
4928 foreach my $test_suffix (@test_suffixes)
4929 {
4930 next
4931 if $test_suffix eq $at_exeext || $test_suffix eq '';
4932 return substr ($obj, 0, length ($obj) - length ($test_suffix)) . '.log'
4933 if substr ($obj, - length ($test_suffix)) eq $test_suffix;
4934 }
4935 $obj .= '.log';
4936 my $compile = 'LOG_COMPILE';
4937 define_variable ($compile,
4938 '$(LOG_COMPILER) $(AM_LOG_FLAGS) $(LOG_FLAGS)', INTERNAL);
4939 $output_rules .= file_contents ('check2', new Automake::Location,
4940 GENERIC => 0,
4941 OBJ => $obj,
4942 SOURCE => $val,
4943 COMPILE =>'$(' . $compile . ')',
4944 EXT => '');
4945 return $obj;
4946 });
4948 my $nhelper=1;
4949 my $prev = 'TESTS';
4950 my $post = '';
4951 my $last_suffix = $test_suffixes[$#test_suffixes];
4952 my $cur = '';
4953 foreach my $test_suffix (@test_suffixes)
4954 {
4955 if ($test_suffix eq $last_suffix)
4956 {
4957 $cur = 'TEST_LOGS';
4958 }
4959 else
4960 {
4961 $cur = 'am__test_logs' . $nhelper;
4962 }
4963 define_variable ($cur,
4964 '$(' . $prev . ':' . $test_suffix . $post . '=.log)', INTERNAL);
4965 $post = '.log';
4966 $prev = $cur;
4967 $nhelper++;
4968 if ($test_suffix ne $at_exeext && $test_suffix ne '')
4969 {
4970 (my $ext = $test_suffix) =~ s/^\.//;
4971 $ext = uc $ext;
4972 my $compile = $ext . '_LOG_COMPILE';
4973 define_variable ($compile,
4974 '$(' . $ext . '_LOG_COMPILER) $(AM_' . $ext . '_LOG_FLAGS)'
4975 . ' $(' . $ext . '_LOG_FLAGS)', INTERNAL);
4976 $output_rules .= file_contents ('check2', new Automake::Location,
4977 GENERIC => 1,
4978 OBJ => '',
4979 SOURCE => '$<',
4980 COMPILE => '$(' . $compile . ')',
4981 EXT => $test_suffix);
4982 }
4983 }
4985 define_variable ('TEST_LOGS_TMP', '$(TEST_LOGS:.log=.log-t)', INTERNAL);
4987 $clean_files{'$(TEST_LOGS_TMP)'} = MOSTLY_CLEAN;
4988 $clean_files{'$(TEST_LOGS)'} = MOSTLY_CLEAN;
4989 $clean_files{'$(TEST_SUITE_LOG)'} = MOSTLY_CLEAN;
4990 $clean_files{'$(TEST_SUITE_HTML)'} = MOSTLY_CLEAN;
4991 }
4992 }
4993 }
4995 # Handle Emacs Lisp.
4996 sub handle_emacs_lisp
4997 {
4998 my @elfiles = &am_install_var ('-candist', 'lisp', 'LISP',
4999 'lisp', 'noinst');
5001 return if ! @elfiles;
5003 define_pretty_variable ('am__ELFILES', TRUE, INTERNAL,
5004 map { $_->[1] } @elfiles);
5005 define_pretty_variable ('am__ELCFILES', TRUE, INTERNAL,
5006 '$(am__ELFILES:.el=.elc)');
5007 # This one can be overridden by users.
5008 define_pretty_variable ('ELCFILES', TRUE, INTERNAL, '$(LISP:.el=.elc)');
5010 push @all, '$(ELCFILES)';
5012 require_variables ($elfiles[0][0], "Emacs Lisp sources seen", TRUE,
5013 'EMACS', 'lispdir');
5014 require_conf_file ($elfiles[0][0], FOREIGN, 'elisp-comp');
5015 &define_variable ('elisp_comp', "$am_config_aux_dir/elisp-comp", INTERNAL);
5016 }
5018 # Handle Python
5019 sub handle_python
5020 {
5021 my @pyfiles = &am_install_var ('-defaultdist', 'python', 'PYTHON',
5022 'noinst');
5023 return if ! @pyfiles;
5025 require_variables ($pyfiles[0][0], "Python sources seen", TRUE, 'PYTHON');
5026 require_conf_file ($pyfiles[0][0], FOREIGN, 'py-compile');
5027 &define_variable ('py_compile', "$am_config_aux_dir/py-compile", INTERNAL);
5028 }
5030 # Handle Java.
5031 sub handle_java
5032 {
5033 my @sourcelist = &am_install_var ('-candist',
5034 'java', 'JAVA',
5035 'java', 'noinst', 'check');
5036 return if ! @sourcelist;
5038 my @prefix = am_primary_prefixes ('JAVA', 1,
5039 'java', 'noinst', 'check');
5041 my $dir;
5042 foreach my $curs (@prefix)
5043 {
5044 next
5045 if $curs eq 'EXTRA';
5047 err_var "${curs}_JAVA", "multiple _JAVA primaries in use"
5048 if defined $dir;
5049 $dir = $curs;
5050 }
5053 push (@all, 'class' . $dir . '.stamp');
5054 }
5057 # Handle some of the minor options.
5058 sub handle_minor_options
5059 {
5060 if (option 'readme-alpha')
5061 {
5062 if ($relative_dir eq '.')
5063 {
5064 if ($package_version !~ /^$GNITS_VERSION_PATTERN$/)
5065 {
5066 msg ('error-gnits', $package_version_location,
5067 "version `$package_version' doesn't follow " .
5068 "Gnits standards");
5069 }
5070 if (defined $1 && -f 'README-alpha')
5071 {
5072 # This means we have an alpha release. See
5073 # GNITS_VERSION_PATTERN for details.
5074 push_dist_common ('README-alpha');
5075 }
5076 }
5077 }
5078 }
5080 ################################################################
5082 # ($OUTPUT, @INPUTS)
5083 # &split_config_file_spec ($SPEC)
5084 # -------------------------------
5085 # Decode the Autoconf syntax for config files (files, headers, links
5086 # etc.).
5087 sub split_config_file_spec ($)
5088 {
5089 my ($spec) = @_;
5090 my ($output, @inputs) = split (/:/, $spec);
5092 push @inputs, "$output.in"
5093 unless @inputs;
5095 return ($output, @inputs);
5096 }
5098 # $input
5099 # locate_am (@POSSIBLE_SOURCES)
5100 # -----------------------------
5101 # AC_CONFIG_FILES allow specifications such as Makefile:top.in:mid.in:bot.in
5102 # This functions returns the first *.in file for which a *.am exists.
5103 # It returns undef otherwise.
5104 sub locate_am (@)
5105 {
5106 my (@rest) = @_;
5107 my $input;
5108 foreach my $file (@rest)
5109 {
5110 if (($file =~ /^(.*)\.in$/) && -f "$1.am")
5111 {
5112 $input = $file;
5113 last;
5114 }
5115 }
5116 return $input;
5117 }
5119 my %make_list;
5121 # &scan_autoconf_config_files ($WHERE, $CONFIG-FILES)
5122 # ---------------------------------------------------
5123 # Study $CONFIG-FILES which is the first argument to AC_CONFIG_FILES
5124 # (or AC_OUTPUT).
5125 sub scan_autoconf_config_files ($$)
5126 {
5127 my ($where, $config_files) = @_;
5129 # Look at potential Makefile.am's.
5130 foreach (split ' ', $config_files)
5131 {
5132 # Must skip empty string for Perl 4.
5133 next if $_ eq "\\" || $_ eq '';
5135 # Handle $local:$input syntax.
5136 my ($local, @rest) = split (/:/);
5137 @rest = ("$local.in",) unless @rest;
5138 msg ('portability', $where,
5139 "Omit leading `./' from config file names such as `$local',"
5140 . "\nas not all make implementations treat `file' and `./file' equally.")
5141 if ($local =~ /^\.\//);
5142 my $input = locate_am @rest;
5143 if ($input)
5144 {
5145 # We have a file that automake should generate.
5146 $make_list{$input} = join (':', ($local, @rest));
5147 }
5148 else
5149 {
5150 # We have a file that automake should cause to be
5151 # rebuilt, but shouldn't generate itself.
5152 push (@other_input_files, $_);
5153 }
5154 $ac_config_files_location{$local} = $where;
5155 $ac_config_files_condition{$local} =
5156 new Automake::Condition (@cond_stack)
5157 if (@cond_stack);
5158 }
5159 }
5162 # &scan_autoconf_traces ($FILENAME)
5163 # ---------------------------------
5164 sub scan_autoconf_traces ($)
5165 {
5166 my ($filename) = @_;
5168 # Macros to trace, with their minimal number of arguments.
5169 #
5170 # IMPORTANT: If you add a macro here, you should also add this macro
5171 # ========= to Automake-preselection in autoconf/lib/autom4te.in.
5172 my %traced = (
5173 AC_CANONICAL_BUILD => 0,
5174 AC_CANONICAL_HOST => 0,
5175 AC_CANONICAL_TARGET => 0,
5176 AC_CONFIG_AUX_DIR => 1,
5177 AC_CONFIG_FILES => 1,
5178 AC_CONFIG_HEADERS => 1,
5179 AC_CONFIG_LIBOBJ_DIR => 1,
5180 AC_CONFIG_LINKS => 1,
5181 AC_FC_SRCEXT => 1,
5182 AC_INIT => 0,
5183 AC_LIBSOURCE => 1,
5184 AC_REQUIRE_AUX_FILE => 1,
5185 AC_SUBST_TRACE => 1,
5186 AM_AUTOMAKE_VERSION => 1,
5187 AM_CONDITIONAL => 2,
5188 AM_ENABLE_MULTILIB => 0,
5189 AM_GNU_GETTEXT => 0,
5190 AM_GNU_GETTEXT_INTL_SUBDIR => 0,
5191 AM_INIT_AUTOMAKE => 0,
5192 AM_MAINTAINER_MODE => 0,
5193 AM_PROG_CC_C_O => 0,
5194 _AM_SUBST_NOTMAKE => 1,
5195 _AM_COND_IF => 1,
5196 _AM_COND_ELSE => 1,
5197 _AM_COND_ENDIF => 1,
5198 LT_SUPPORTED_TAG => 1,
5199 _LT_AC_TAGCONFIG => 0,
5200 m4_include => 1,
5201 m4_sinclude => 1,
5202 sinclude => 1,
5203 );
5205 my $traces = ($ENV{AUTOCONF} || 'autoconf') . " ";
5207 # Use a separator unlikely to be used, not `:', the default, which
5208 # has a precise meaning for AC_CONFIG_FILES and so on.
5209 $traces .= join (' ',
5210 map { "--trace=$_" . ':\$f:\$l::\$d::\$n::\${::}%' }
5211 (keys %traced));
5213 my $tracefh = new Automake::XFile ("$traces $filename |");
5214 verb "reading $traces";
5216 @cond_stack = ();
5217 my $where;
5219 while ($_ = $tracefh->getline)
5220 {
5221 chomp;
5222 my ($here, $depth, @args) = split (/::/);
5223 $where = new Automake::Location $here;
5224 my $macro = $args[0];
5226 prog_error ("unrequested trace `$macro'")
5227 unless exists $traced{$macro};
5229 # Skip and diagnose malformed calls.
5230 if ($#args < $traced{$macro})
5231 {
5232 msg ('syntax', $where, "not enough arguments for $macro");
5233 next;
5234 }
5236 # Alphabetical ordering please.
5237 if ($macro eq 'AC_CANONICAL_BUILD')
5238 {
5239 if ($seen_canonical <= AC_CANONICAL_BUILD)
5240 {
5241 $seen_canonical = AC_CANONICAL_BUILD;
5242 $canonical_location = $where;
5243 }
5244 }
5245 elsif ($macro eq 'AC_CANONICAL_HOST')
5246 {
5247 if ($seen_canonical <= AC_CANONICAL_HOST)
5248 {
5249 $seen_canonical = AC_CANONICAL_HOST;
5250 $canonical_location = $where;
5251 }
5252 }
5253 elsif ($macro eq 'AC_CANONICAL_TARGET')
5254 {
5255 $seen_canonical = AC_CANONICAL_TARGET;
5256 $canonical_location = $where;
5257 }
5258 elsif ($macro eq 'AC_CONFIG_AUX_DIR')
5259 {
5260 if ($seen_init_automake)
5261 {
5262 error ($where, "AC_CONFIG_AUX_DIR must be called before "
5263 . "AM_INIT_AUTOMAKE...", partial => 1);
5264 error ($seen_init_automake, "... AM_INIT_AUTOMAKE called here");
5265 }
5266 $config_aux_dir = $args[1];
5267 $config_aux_dir_set_in_configure_ac = 1;
5268 $relative_dir = '.';
5269 check_directory ($config_aux_dir, $where);
5270 }
5271 elsif ($macro eq 'AC_CONFIG_FILES')
5272 {
5273 # Look at potential Makefile.am's.
5274 scan_autoconf_config_files ($where, $args[1]);
5275 }
5276 elsif ($macro eq 'AC_CONFIG_HEADERS')
5277 {
5278 foreach my $spec (split (' ', $args[1]))
5279 {
5280 my ($dest, @src) = split (':', $spec);
5281 $ac_config_files_location{$dest} = $where;
5282 push @config_headers, $spec;
5283 }
5284 }
5285 elsif ($macro eq 'AC_CONFIG_LIBOBJ_DIR')
5286 {
5287 $config_libobj_dir = $args[1];
5288 $relative_dir = '.';
5289 check_directory ($config_libobj_dir, $where);
5290 }
5291 elsif ($macro eq 'AC_CONFIG_LINKS')
5292 {
5293 foreach my $spec (split (' ', $args[1]))
5294 {
5295 my ($dest, $src) = split (':', $spec);
5296 $ac_config_files_location{$dest} = $where;
5297 push @config_links, $spec;
5298 }
5299 }
5300 elsif ($macro eq 'AC_FC_SRCEXT')
5301 {
5302 my $suffix = $args[1];
5303 # These flags are used as %SOURCEFLAG% in depend2.am,
5304 # where the trailing space is important.
5305 $sourceflags{'.' . $suffix} = '$(FCFLAGS_' . $suffix . ') '
5306 if ($suffix eq 'f90' || $suffix eq 'f95' || $suffix eq 'f03' || $suffix eq 'f08');
5307 }
5308 elsif ($macro eq 'AC_INIT')
5309 {
5310 if (defined $args[2])
5311 {
5312 $package_version = $args[2];
5313 $package_version_location = $where;
5314 }
5315 }
5316 elsif ($macro eq 'AC_LIBSOURCE')
5317 {
5318 $libsources{$args[1]} = $here;
5319 }
5320 elsif ($macro eq 'AC_REQUIRE_AUX_FILE')
5321 {
5322 # Only remember the first time a file is required.
5323 $required_aux_file{$args[1]} = $where
5324 unless exists $required_aux_file{$args[1]};
5325 }
5326 elsif ($macro eq 'AC_SUBST_TRACE')
5327 {
5328 # Just check for alphanumeric in AC_SUBST_TRACE. If you do
5329 # AC_SUBST(5), then too bad.
5330 $configure_vars{$args[1]} = $where
5331 if $args[1] =~ /^\w+$/;
5332 }
5333 elsif ($macro eq 'AM_AUTOMAKE_VERSION')
5334 {
5335 error ($where,
5336 "version mismatch. This is Automake $VERSION,\n" .
5337 "but the definition used by this AM_INIT_AUTOMAKE\n" .
5338 "comes from Automake $args[1]. You should recreate\n" .
5339 "aclocal.m4 with aclocal and run automake again.\n",
5340 # $? = 63 is used to indicate version mismatch to missing.
5341 exit_code => 63)
5342 if $VERSION ne $args[1];
5344 $seen_automake_version = 1;
5345 }
5346 elsif ($macro eq 'AM_CONDITIONAL')
5347 {
5348 $configure_cond{$args[1]} = $where;
5349 }
5350 elsif ($macro eq 'AM_ENABLE_MULTILIB')
5351 {
5352 $seen_multilib = $where;
5353 }
5354 elsif ($macro eq 'AM_GNU_GETTEXT')
5355 {
5356 $seen_gettext = $where;
5357 $ac_gettext_location = $where;
5358 $seen_gettext_external = grep ($_ eq 'external', @args);
5359 }
5360 elsif ($macro eq 'AM_GNU_GETTEXT_INTL_SUBDIR')
5361 {
5362 $seen_gettext_intl = $where;
5363 }
5364 elsif ($macro eq 'AM_INIT_AUTOMAKE')
5365 {
5366 $seen_init_automake = $where;
5367 if (defined $args[2])
5368 {
5369 $package_version = $args[2];
5370 $package_version_location = $where;
5371 }
5372 elsif (defined $args[1])
5373 {
5374 exit $exit_code
5375 if (process_global_option_list ($where,
5376 split (' ', $args[1])));
5377 }
5378 }
5379 elsif ($macro eq 'AM_MAINTAINER_MODE')
5380 {
5381 $seen_maint_mode = $where;
5382 }
5383 elsif ($macro eq 'AM_PROG_CC_C_O')
5384 {
5385 $seen_cc_c_o = $where;
5386 }
5387 elsif ($macro eq '_AM_COND_IF')
5388 {
5389 cond_stack_if ('', $args[1], $where);
5390 error ($where, "missing m4 quoting, macro depth $depth")
5391 if ($depth != 1);
5392 }
5393 elsif ($macro eq '_AM_COND_ELSE')
5394 {
5395 cond_stack_else ('!', $args[1], $where);
5396 error ($where, "missing m4 quoting, macro depth $depth")
5397 if ($depth != 1);
5398 }
5399 elsif ($macro eq '_AM_COND_ENDIF')
5400 {
5401 cond_stack_endif (undef, undef, $where);
5402 error ($where, "missing m4 quoting, macro depth $depth")
5403 if ($depth != 1);
5404 }
5405 elsif ($macro eq '_AM_SUBST_NOTMAKE')
5406 {
5407 $ignored_configure_vars{$args[1]} = $where;
5408 }
5409 elsif ($macro eq 'm4_include'
5410 || $macro eq 'm4_sinclude'
5411 || $macro eq 'sinclude')
5412 {
5413 # Skip missing `sinclude'd files.
5414 next if $macro ne 'm4_include' && ! -f $args[1];
5416 # Some modified versions of Autoconf don't use
5417 # frozen files. Consequently it's possible that we see all
5418 # m4_include's performed during Autoconf's startup.
5419 # Obviously we don't want to distribute Autoconf's files
5420 # so we skip absolute filenames here.
5421 push @configure_deps, '$(top_srcdir)/' . $args[1]
5422 unless $here =~ m,^(?:\w:)?[\\/],;
5423 # Keep track of the greatest timestamp.
5424 if (-e $args[1])
5425 {
5426 my $mtime = mtime $args[1];
5427 $configure_deps_greatest_timestamp = $mtime
5428 if $mtime > $configure_deps_greatest_timestamp;
5429 }
5430 }
5431 elsif ($macro eq 'LT_SUPPORTED_TAG')
5432 {
5433 $libtool_tags{$args[1]} = 1;
5434 $libtool_new_api = 1;
5435 }
5436 elsif ($macro eq '_LT_AC_TAGCONFIG')
5437 {
5438 # _LT_AC_TAGCONFIG is an old macro present in Libtool 1.5.
5439 # We use it to detect whether tags are supported. Our
5440 # preferred interface is LT_SUPPORTED_TAG, but it was
5441 # introduced in Libtool 1.6.
5442 if (0 == keys %libtool_tags)
5443 {
5444 # Hardcode the tags supported by Libtool 1.5.
5445 %libtool_tags = (CC => 1, CXX => 1, GCJ => 1, F77 => 1);
5446 }
5447 }
5448 }
5450 error ($where, "condition stack not properly closed")
5451 if (@cond_stack);
5453 $tracefh->close;
5454 }
5457 # &scan_autoconf_files ()
5458 # -----------------------
5459 # Check whether we use `configure.ac' or `configure.in'.
5460 # Scan it (and possibly `aclocal.m4') for interesting things.
5461 # We must scan aclocal.m4 because there might be AC_SUBSTs and such there.
5462 sub scan_autoconf_files ()
5463 {
5464 # Reinitialize libsources here. This isn't really necessary,
5465 # since we currently assume there is only one configure.ac. But
5466 # that won't always be the case.
5467 %libsources = ();
5469 # Keep track of the youngest configure dependency.
5470 $configure_deps_greatest_timestamp = mtime $configure_ac;
5471 if (-e 'aclocal.m4')
5472 {
5473 my $mtime = mtime 'aclocal.m4';
5474 $configure_deps_greatest_timestamp = $mtime
5475 if $mtime > $configure_deps_greatest_timestamp;
5476 }
5478 scan_autoconf_traces ($configure_ac);
5480 @configure_input_files = sort keys %make_list;
5481 # Set input and output files if not specified by user.
5482 if (! @input_files)
5483 {
5484 @input_files = @configure_input_files;
5485 %output_files = %make_list;
5486 }
5489 if (! $seen_init_automake)
5490 {
5491 err_ac ("no proper invocation of AM_INIT_AUTOMAKE was found.\nYou "
5492 . "should verify that $configure_ac invokes AM_INIT_AUTOMAKE,"
5493 . "\nthat aclocal.m4 is present in the top-level directory,\n"
5494 . "and that aclocal.m4 was recently regenerated "
5495 . "(using aclocal).");
5496 }
5497 else
5498 {
5499 if (! $seen_automake_version)
5500 {
5501 if (-f 'aclocal.m4')
5502 {
5503 error ($seen_init_automake,
5504 "your implementation of AM_INIT_AUTOMAKE comes from " .
5505 "an\nold Automake version. You should recreate " .
5506 "aclocal.m4\nwith aclocal and run automake again.\n",
5507 # $? = 63 is used to indicate version mismatch to missing.
5508 exit_code => 63);
5509 }
5510 else
5511 {
5512 error ($seen_init_automake,
5513 "no proper implementation of AM_INIT_AUTOMAKE was " .
5514 "found,\nprobably because aclocal.m4 is missing...\n" .
5515 "You should run aclocal to create this file, then\n" .
5516 "run automake again.\n");
5517 }
5518 }
5519 }
5521 locate_aux_dir ();
5523 # Reorder @input_files so that the Makefile that distributes aux
5524 # files is processed last. This is important because each directory
5525 # can require auxiliary scripts and we should wait until they have
5526 # been installed before distributing them.
5528 # The Makefile.in that distribute the aux files is the one in
5529 # $config_aux_dir or the top-level Makefile.
5530 my $auxdirdist = is_make_dir ($config_aux_dir) ? $config_aux_dir : '.';
5531 my @new_input_files = ();
5532 while (@input_files)
5533 {
5534 my $in = pop @input_files;
5535 my @ins = split (/:/, $output_files{$in});
5536 if (dirname ($ins[0]) eq $auxdirdist)
5537 {
5538 push @new_input_files, $in;
5539 $automake_will_process_aux_dir = 1;
5540 }
5541 else
5542 {
5543 unshift @new_input_files, $in;
5544 }
5545 }
5546 @input_files = @new_input_files;
5548 # If neither the auxdir/Makefile nor the ./Makefile are generated
5549 # by Automake, we won't distribute the aux files anyway. Assume
5550 # the user know what (s)he does, and pretend we will distribute
5551 # them to disable the error in require_file_internal.
5552 $automake_will_process_aux_dir = 1 if ! is_make_dir ($auxdirdist);
5554 # Look for some files we need. Always check for these. This
5555 # check must be done for every run, even those where we are only
5556 # looking at a subdir Makefile. We must set relative_dir for
5557 # maybe_push_required_file to work.
5558 # Sort the files for stable verbose output.
5559 $relative_dir = '.';
5560 foreach my $file (sort keys %required_aux_file)
5561 {
5562 require_conf_file ($required_aux_file{$file}->get, FOREIGN, $file)
5563 }
5564 err_am "`install.sh' is an anachronism; use `install-sh' instead"
5565 if -f $config_aux_dir . '/install.sh';
5567 # Preserve dist_common for later.
5568 $configure_dist_common = variable_value ('DIST_COMMON') || '';
5570 }
5572 ################################################################
5574 # Set up for Cygnus mode.
5575 sub check_cygnus
5576 {
5577 my $cygnus = option 'cygnus';
5578 return unless $cygnus;
5580 set_strictness ('foreign');
5581 set_option ('no-installinfo', $cygnus);
5582 set_option ('no-dependencies', $cygnus);
5583 set_option ('no-dist', $cygnus);
5585 err_ac "`AM_MAINTAINER_MODE' required when --cygnus specified"
5586 if !$seen_maint_mode;
5587 }
5589 # Do any extra checking for GNU standards.
5590 sub check_gnu_standards
5591 {
5592 if ($relative_dir eq '.')
5593 {
5594 # In top level (or only) directory.
5595 require_file ("$am_file.am", GNU,
5596 qw/INSTALL NEWS README AUTHORS ChangeLog/);
5598 # Accept one of these three licenses; default to COPYING.
5599 # Make sure we do not overwrite an existing license.
5600 my $license;
5601 foreach (qw /COPYING COPYING.LIB COPYING.LESSER/)
5602 {
5603 if (-f $_)
5604 {
5605 $license = $_;
5606 last;
5607 }
5608 }
5609 require_file ("$am_file.am", GNU, 'COPYING')
5610 unless $license;
5611 }
5613 for my $opt ('no-installman', 'no-installinfo')
5614 {
5615 msg ('error-gnu', option $opt,
5616 "option `$opt' disallowed by GNU standards")
5617 if option $opt;
5618 }
5619 }
5621 # Do any extra checking for GNITS standards.
5622 sub check_gnits_standards
5623 {
5624 if ($relative_dir eq '.')
5625 {
5626 # In top level (or only) directory.
5627 require_file ("$am_file.am", GNITS, 'THANKS');
5628 }
5629 }
5631 ################################################################
5632 #
5633 # Functions to handle files of each language.
5635 # Each `lang_X_rewrite($DIRECTORY, $BASE, $EXT)' function follows a
5636 # simple formula: Return value is LANG_SUBDIR if the resulting object
5637 # file should be in a subdir if the source file is, LANG_PROCESS if
5638 # file is to be dealt with, LANG_IGNORE otherwise.
5640 # Much of the actual processing is handled in
5641 # handle_single_transform. These functions exist so that
5642 # auxiliary information can be recorded for a later cleanup pass.
5643 # Note that the calls to these functions are computed, so don't bother
5644 # searching for their precise names in the source.
5646 # This is just a convenience function that can be used to determine
5647 # when a subdir object should be used.
5648 sub lang_sub_obj
5649 {
5650 return option 'subdir-objects' ? LANG_SUBDIR : LANG_PROCESS;
5651 }
5653 # Rewrite a single C source file.
5654 sub lang_c_rewrite
5655 {
5656 my ($directory, $base, $ext, $nonansi_obj, $have_per_exec_flags, $var) = @_;
5658 if (option 'ansi2knr' && $base =~ /_$/)
5659 {
5660 # FIXME: include line number in error.
5661 err_am "C source file `$base.c' would be deleted by ansi2knr rules";
5662 }
5664 my $r = LANG_PROCESS;
5665 if (option 'subdir-objects')
5666 {
5667 $r = LANG_SUBDIR;
5668 if ($directory && $directory ne '.')
5669 {
5670 $base = $directory . '/' . $base;
5672 # libtool is always able to put the object at the proper place,
5673 # so we do not have to require AM_PROG_CC_C_O when building .lo files.
5674 msg_var ('portability', $var,
5675 "compiling `$base.c' in subdir requires "
5676 . "`AM_PROG_CC_C_O' in `$configure_ac'",
5677 uniq_scope => US_GLOBAL,
5678 uniq_part => 'AM_PROG_CC_C_O subdir')
5679 unless $seen_cc_c_o || $nonansi_obj eq '.lo';
5680 }
5682 # In this case we already have the directory information, so
5683 # don't add it again.
5684 $de_ansi_files{$base} = '';
5685 }
5686 else
5687 {
5688 $de_ansi_files{$base} = (($directory eq '.' || $directory eq '')
5689 ? ''
5690 : "$directory/");
5691 }
5693 if (! $seen_cc_c_o
5694 && $have_per_exec_flags
5695 && ! option 'subdir-objects'
5696 && $nonansi_obj ne '.lo')
5697 {
5698 msg_var ('portability',
5699 $var, "compiling `$base.c' with per-target flags requires "
5700 . "`AM_PROG_CC_C_O' in `$configure_ac'",
5701 uniq_scope => US_GLOBAL,
5702 uniq_part => 'AM_PROG_CC_C_O per-target')
5703 }
5705 return $r;
5706 }
5708 # Rewrite a single C++ source file.
5709 sub lang_cxx_rewrite
5710 {
5711 return &lang_sub_obj;
5712 }
5714 # Rewrite a single header file.
5715 sub lang_header_rewrite
5716 {
5717 # Header files are simply ignored.
5718 return LANG_IGNORE;
5719 }
5721 # Rewrite a single yacc file.
5722 sub lang_yacc_rewrite
5723 {
5724 my ($directory, $base, $ext) = @_;
5726 my $r = &lang_sub_obj;
5727 (my $newext = $ext) =~ tr/y/c/;
5728 return ($r, $newext);
5729 }
5731 # Rewrite a single yacc++ file.
5732 sub lang_yaccxx_rewrite
5733 {
5734 my ($directory, $base, $ext) = @_;
5736 my $r = &lang_sub_obj;
5737 (my $newext = $ext) =~ tr/y/c/;
5738 return ($r, $newext);
5739 }
5741 # Rewrite a single lex file.
5742 sub lang_lex_rewrite
5743 {
5744 my ($directory, $base, $ext) = @_;
5746 my $r = &lang_sub_obj;
5747 (my $newext = $ext) =~ tr/l/c/;
5748 return ($r, $newext);
5749 }
5751 # Rewrite a single lex++ file.
5752 sub lang_lexxx_rewrite
5753 {
5754 my ($directory, $base, $ext) = @_;
5756 my $r = &lang_sub_obj;
5757 (my $newext = $ext) =~ tr/l/c/;
5758 return ($r, $newext);
5759 }
5761 # Rewrite a single assembly file.
5762 sub lang_asm_rewrite
5763 {
5764 return &lang_sub_obj;
5765 }
5767 # Rewrite a single preprocessed assembly file.
5768 sub lang_cppasm_rewrite
5769 {
5770 return &lang_sub_obj;
5771 }
5773 # Rewrite a single Fortran 77 file.
5774 sub lang_f77_rewrite
5775 {
5776 return &lang_sub_obj;
5777 }
5779 # Rewrite a single Fortran file.
5780 sub lang_fc_rewrite
5781 {
5782 return &lang_sub_obj;
5783 }
5785 # Rewrite a single preprocessed Fortran file.
5786 sub lang_ppfc_rewrite
5787 {
5788 return &lang_sub_obj;
5789 }
5791 # Rewrite a single preprocessed Fortran 77 file.
5792 sub lang_ppf77_rewrite
5793 {
5794 return &lang_sub_obj;
5795 }
5797 # Rewrite a single ratfor file.
5798 sub lang_ratfor_rewrite
5799 {
5800 return &lang_sub_obj;
5801 }
5803 # Rewrite a single Objective C file.
5804 sub lang_objc_rewrite
5805 {
5806 return &lang_sub_obj;
5807 }
5809 # Rewrite a single Unified Parallel C file.
5810 sub lang_upc_rewrite
5811 {
5812 return &lang_sub_obj;
5813 }
5815 # Rewrite a single Java file.
5816 sub lang_java_rewrite
5817 {
5818 return LANG_SUBDIR;
5819 }
5821 # The lang_X_finish functions are called after all source file
5822 # processing is done. Each should handle defining rules for the
5823 # language, etc. A finish function is only called if a source file of
5824 # the appropriate type has been seen.
5826 sub lang_c_finish
5827 {
5828 # Push all libobjs files onto de_ansi_files. We actually only
5829 # push files which exist in the current directory, and which are
5830 # genuine source files.
5831 foreach my $file (keys %libsources)
5832 {
5833 if ($file =~ /^(.*)\.[cly]$/ && -f "$relative_dir/$file")
5834 {
5835 $de_ansi_files{$1} = ''
5836 }
5837 }
5839 if (option 'ansi2knr' && keys %de_ansi_files)
5840 {
5841 # Make all _.c files depend on their corresponding .c files.
5842 my @objects;
5843 foreach my $base (sort keys %de_ansi_files)
5844 {
5845 # Each _.c file must depend on ansi2knr; otherwise it
5846 # might be used in a parallel build before it is built.
5847 # We need to support files in the srcdir and in the build
5848 # dir (because these files might be auto-generated. But
5849 # we can't use $< -- some makes only define $< during a
5850 # suffix rule.
5851 my $ansfile = $de_ansi_files{$base} . $base . '.c';
5852 $output_rules .= ($base . "_.c: $ansfile \$(ANSI2KNR)\n\t"
5853 . '$(CPP) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS) $(CPPFLAGS) '
5854 . '`if test -f $(srcdir)/' . $ansfile
5855 . '; then echo $(srcdir)/' . $ansfile
5856 . '; else echo ' . $ansfile . '; fi` '
5857 . "| sed 's/^# \\([0-9]\\)/#line \\1/' "
5858 . '| $(ANSI2KNR) > $@'
5859 # If ansi2knr fails then we shouldn't
5860 # create the _.c file
5861 . " || rm -f \$\@\n");
5862 push (@objects, $base . '_.$(OBJEXT)');
5863 push (@objects, $base . '_.lo')
5864 if var ('LIBTOOL');
5866 # Explicitly clean the _.c files if they are in a
5867 # subdirectory. (In the current directory they get erased
5868 # by a `rm -f *_.c' rule.)
5869 $clean_files{$base . '_.c'} = MOSTLY_CLEAN
5870 if dirname ($base) ne '.';
5871 }
5873 # Make all _.o (and _.lo) files depend on ansi2knr.
5874 # Use a sneaky little hack to make it print nicely.
5875 &pretty_print_rule ('', '', @objects, ':', '$(ANSI2KNR)');
5876 }
5877 }
5879 # This is a yacc helper which is called whenever we have decided to
5880 # compile a yacc file.
5881 sub lang_yacc_target_hook
5882 {
5883 my ($self, $aggregate, $output, $input, %transform) = @_;
5885 my $flag = $aggregate . "_YFLAGS";
5886 my $flagvar = var $flag;
5887 my $YFLAGSvar = var 'YFLAGS';
5888 if (($flagvar && $flagvar->variable_value =~ /$DASH_D_PATTERN/o)
5889 || ($YFLAGSvar && $YFLAGSvar->variable_value =~ /$DASH_D_PATTERN/o))
5890 {
5891 (my $output_base = $output) =~ s/$KNOWN_EXTENSIONS_PATTERN$//;
5892 my $header = $output_base . '.h';
5894 # Found a `-d' that applies to the compilation of this file.
5895 # Add a dependency for the generated header file, and arrange
5896 # for that file to be included in the distribution.
5897 foreach my $cond (Automake::Rule::define (${header}, 'internal',
5898 RULE_AUTOMAKE, TRUE,
5899 INTERNAL))
5900 {
5901 my $condstr = $cond->subst_string;
5902 $output_rules .=
5903 "$condstr${header}: $output\n"
5904 # Recover from removal of $header
5905 . "$condstr\t\@if test ! -f \$@; then \\\n"
5906 . "$condstr\t rm -f $output; \\\n"
5907 . "$condstr\t \$(MAKE) \$(AM_MAKEFLAGS) $output; \\\n"
5908 . "$condstr\telse :; fi\n";
5909 }
5910 # Distribute the generated file, unless its .y source was
5911 # listed in a nodist_ variable. (&handle_source_transform
5912 # will set DIST_SOURCE.)
5913 &push_dist_common ($header)
5914 if $transform{'DIST_SOURCE'};
5916 # If the files are built in the build directory, then we want
5917 # to remove them with `make clean'. If they are in srcdir
5918 # they shouldn't be touched. However, we can't determine this
5919 # statically, and the GNU rules say that yacc/lex output files
5920 # should be removed by maintainer-clean. So that's what we
5921 # do.
5922 $clean_files{$header} = MAINTAINER_CLEAN;
5923 }
5924 # Erase $OUTPUT on `make maintainer-clean' (by GNU standards).
5925 # See the comment above for $HEADER.
5926 $clean_files{$output} = MAINTAINER_CLEAN;
5927 }
5929 # This is a lex helper which is called whenever we have decided to
5930 # compile a lex file.
5931 sub lang_lex_target_hook
5932 {
5933 my ($self, $aggregate, $output, $input) = @_;
5934 # If the files are built in the build directory, then we want to
5935 # remove them with `make clean'. If they are in srcdir they
5936 # shouldn't be touched. However, we can't determine this
5937 # statically, and the GNU rules say that yacc/lex output files
5938 # should be removed by maintainer-clean. So that's what we do.
5939 $clean_files{$output} = MAINTAINER_CLEAN;
5940 }
5942 # This is a helper for both lex and yacc.
5943 sub yacc_lex_finish_helper
5944 {
5945 return if defined $language_scratch{'lex-yacc-done'};
5946 $language_scratch{'lex-yacc-done'} = 1;
5948 # FIXME: for now, no line number.
5949 require_conf_file ($configure_ac, FOREIGN, 'ylwrap');
5950 &define_variable ('YLWRAP', "$am_config_aux_dir/ylwrap", INTERNAL);
5951 }
5953 sub lang_yacc_finish
5954 {
5955 return if defined $language_scratch{'yacc-done'};
5956 $language_scratch{'yacc-done'} = 1;
5958 reject_var 'YACCFLAGS', "`YACCFLAGS' obsolete; use `YFLAGS' instead";
5960 yacc_lex_finish_helper;
5961 }
5964 sub lang_lex_finish
5965 {
5966 return if defined $language_scratch{'lex-done'};
5967 $language_scratch{'lex-done'} = 1;
5969 yacc_lex_finish_helper;
5970 }
5973 # Given a hash table of linker names, pick the name that has the most
5974 # precedence. This is lame, but something has to have global
5975 # knowledge in order to eliminate the conflict. Add more linkers as
5976 # required.
5977 sub resolve_linker
5978 {
5979 my (%linkers) = @_;
5981 foreach my $l (qw(GCJLINK CXXLINK F77LINK FCLINK OBJCLINK UPCLINK))
5982 {
5983 return $l if defined $linkers{$l};
5984 }
5985 return 'LINK';
5986 }
5988 # Called to indicate that an extension was used.
5989 sub saw_extension
5990 {
5991 my ($ext) = @_;
5992 if (! defined $extension_seen{$ext})
5993 {
5994 $extension_seen{$ext} = 1;
5995 }
5996 else
5997 {
5998 ++$extension_seen{$ext};
5999 }
6000 }
6002 # Return the number of files seen for a given language. Knows about
6003 # special cases we care about. FIXME: this is hideous. We need
6004 # something that involves real language objects. For instance yacc
6005 # and yaccxx could both derive from a common yacc class which would
6006 # know about the strange ylwrap requirement. (Or better yet we could
6007 # just not support legacy yacc!)
6008 sub count_files_for_language
6009 {
6010 my ($name) = @_;
6012 my @names;
6013 if ($name eq 'yacc' || $name eq 'yaccxx')
6014 {
6015 @names = ('yacc', 'yaccxx');
6016 }
6017 elsif ($name eq 'lex' || $name eq 'lexxx')
6018 {
6019 @names = ('lex', 'lexxx');
6020 }
6021 else
6022 {
6023 @names = ($name);
6024 }
6026 my $r = 0;
6027 foreach $name (@names)
6028 {
6029 my $lang = $languages{$name};
6030 foreach my $ext (@{$lang->extensions})
6031 {
6032 $r += $extension_seen{$ext}
6033 if defined $extension_seen{$ext};
6034 }
6035 }
6037 return $r
6038 }
6040 # Called to ask whether source files have been seen . If HEADERS is 1,
6041 # headers can be included.
6042 sub saw_sources_p
6043 {
6044 my ($headers) = @_;
6046 # count all the sources
6047 my $count = 0;
6048 foreach my $val (values %extension_seen)
6049 {
6050 $count += $val;
6051 }
6053 if (!$headers)
6054 {
6055 $count -= count_files_for_language ('header');
6056 }
6058 return $count > 0;
6059 }
6062 # register_language (%ATTRIBUTE)
6063 # ------------------------------
6064 # Register a single language.
6065 # Each %ATTRIBUTE is of the form ATTRIBUTE => VALUE.
6066 sub register_language (%)
6067 {
6068 my (%option) = @_;
6070 # Set the defaults.
6071 $option{'ansi'} = 0
6072 unless defined $option{'ansi'};
6073 $option{'autodep'} = 'no'
6074 unless defined $option{'autodep'};
6075 $option{'linker'} = ''
6076 unless defined $option{'linker'};
6077 $option{'flags'} = []
6078 unless defined $option{'flags'};
6079 $option{'output_extensions'} = sub { return ( '.$(OBJEXT)', '.lo' ) }
6080 unless defined $option{'output_extensions'};
6081 $option{'nodist_specific'} = 0
6082 unless defined $option{'nodist_specific'};
6084 my $lang = new Language (%option);
6086 # Fill indexes.
6087 $extension_map{$_} = $lang->name foreach @{$lang->extensions};
6088 $languages{$lang->name} = $lang;
6089 my $link = $lang->linker;
6090 if ($link)
6091 {
6092 if (exists $link_languages{$link})
6093 {
6094 prog_error ("`$link' has different definitions in "
6095 . $lang->name . " and " . $link_languages{$link}->name)
6096 if $lang->link ne $link_languages{$link}->link;
6097 }
6098 else
6099 {
6100 $link_languages{$link} = $lang;
6101 }
6102 }
6104 # Update the pattern of known extensions.
6105 accept_extensions (@{$lang->extensions});
6107 # Upate the $suffix_rule map.
6108 foreach my $suffix (@{$lang->extensions})
6109 {
6110 foreach my $dest (&{$lang->output_extensions} ($suffix))
6111 {
6112 register_suffix_rule (INTERNAL, $suffix, $dest);
6113 }
6114 }
6115 }
6117 # derive_suffix ($EXT, $OBJ)
6118 # --------------------------
6119 # This function is used to find a path from a user-specified suffix $EXT
6120 # to $OBJ or to some other suffix we recognize internally, e.g. `cc'.
6121 sub derive_suffix ($$)
6122 {
6123 my ($source_ext, $obj) = @_;
6125 while (! $extension_map{$source_ext}
6126 && $source_ext ne $obj
6127 && exists $suffix_rules->{$source_ext}
6128 && exists $suffix_rules->{$source_ext}{$obj})
6129 {
6130 $source_ext = $suffix_rules->{$source_ext}{$obj}[0];
6131 }
6133 return $source_ext;
6134 }
6137 ################################################################
6139 # Pretty-print something and append to output_rules.
6140 sub pretty_print_rule
6141 {
6142 $output_rules .= &makefile_wrap (@_);
6143 }
6146 ################################################################
6149 ## -------------------------------- ##
6150 ## Handling the conditional stack. ##
6151 ## -------------------------------- ##
6154 # $STRING
6155 # make_conditional_string ($NEGATE, $COND)
6156 # ----------------------------------------
6157 sub make_conditional_string ($$)
6158 {
6159 my ($negate, $cond) = @_;
6160 $cond = "${cond}_TRUE"
6161 unless $cond =~ /^TRUE|FALSE$/;
6162 $cond = Automake::Condition::conditional_negate ($cond)
6163 if $negate;
6164 return $cond;
6165 }
6168 my %_am_macro_for_cond =
6169 (
6170 AMDEP => "one of the compiler tests\n"
6171 . " AC_PROG_CC, AC_PROG_CXX, AC_PROG_CXX, AC_PROG_OBJC,\n"
6172 . " AM_PROG_AS, AM_PROG_GCJ, AM_PROG_UPC",
6173 am__fastdepCC => 'AC_PROG_CC',
6174 am__fastdepCCAS => 'AM_PROG_AS',
6175 am__fastdepCXX => 'AC_PROG_CXX',
6176 am__fastdepGCJ => 'AM_PROG_GCJ',
6177 am__fastdepOBJC => 'AC_PROG_OBJC',
6178 am__fastdepUPC => 'AM_PROG_UPC'
6179 );
6181 # $COND
6182 # cond_stack_if ($NEGATE, $COND, $WHERE)
6183 # --------------------------------------
6184 sub cond_stack_if ($$$)
6185 {
6186 my ($negate, $cond, $where) = @_;
6188 if (! $configure_cond{$cond} && $cond !~ /^TRUE|FALSE$/)
6189 {
6190 my $text = "$cond does not appear in AM_CONDITIONAL";
6191 my $scope = US_LOCAL;
6192 if (exists $_am_macro_for_cond{$cond})
6193 {
6194 my $mac = $_am_macro_for_cond{$cond};
6195 $text .= "\n The usual way to define `$cond' is to add ";
6196 $text .= ($mac =~ / /) ? $mac : "`$mac'";
6197 $text .= "\n to `$configure_ac' and run `aclocal' and `autoconf' again.";
6198 # These warnings appear in Automake files (depend2.am),
6199 # so there is no need to display them more than once:
6200 $scope = US_GLOBAL;
6201 }
6202 error $where, $text, uniq_scope => $scope;
6203 }
6205 push (@cond_stack, make_conditional_string ($negate, $cond));
6207 return new Automake::Condition (@cond_stack);
6208 }
6211 # $COND
6212 # cond_stack_else ($NEGATE, $COND, $WHERE)
6213 # ----------------------------------------
6214 sub cond_stack_else ($$$)
6215 {
6216 my ($negate, $cond, $where) = @_;
6218 if (! @cond_stack)
6219 {
6220 error $where, "else without if";
6221 return FALSE;
6222 }
6224 $cond_stack[$#cond_stack] =
6225 Automake::Condition::conditional_negate ($cond_stack[$#cond_stack]);
6227 # If $COND is given, check against it.
6228 if (defined $cond)
6229 {
6230 $cond = make_conditional_string ($negate, $cond);
6232 error ($where, "else reminder ($negate$cond) incompatible with "
6233 . "current conditional: $cond_stack[$#cond_stack]")
6234 if $cond_stack[$#cond_stack] ne $cond;
6235 }
6237 return new Automake::Condition (@cond_stack);
6238 }
6241 # $COND
6242 # cond_stack_endif ($NEGATE, $COND, $WHERE)
6243 # -----------------------------------------
6244 sub cond_stack_endif ($$$)
6245 {
6246 my ($negate, $cond, $where) = @_;
6247 my $old_cond;
6249 if (! @cond_stack)
6250 {
6251 error $where, "endif without if";
6252 return TRUE;
6253 }
6255 # If $COND is given, check against it.
6256 if (defined $cond)
6257 {
6258 $cond = make_conditional_string ($negate, $cond);
6260 error ($where, "endif reminder ($negate$cond) incompatible with "
6261 . "current conditional: $cond_stack[$#cond_stack]")
6262 if $cond_stack[$#cond_stack] ne $cond;
6263 }
6265 pop @cond_stack;
6267 return new Automake::Condition (@cond_stack);
6268 }
6274 ## ------------------------ ##
6275 ## Handling the variables. ##
6276 ## ------------------------ ##
6279 # &define_pretty_variable ($VAR, $COND, $WHERE, @VALUE)
6280 # -----------------------------------------------------
6281 # Like define_variable, but the value is a list, and the variable may
6282 # be defined conditionally. The second argument is the condition
6283 # under which the value should be defined; this should be the empty
6284 # string to define the variable unconditionally. The third argument
6285 # is a list holding the values to use for the variable. The value is
6286 # pretty printed in the output file.
6287 sub define_pretty_variable ($$$@)
6288 {
6289 my ($var, $cond, $where, @value) = @_;
6291 if (! vardef ($var, $cond))
6292 {
6293 Automake::Variable::define ($var, VAR_AUTOMAKE, '', $cond, "@value",
6294 '', $where, VAR_PRETTY);
6295 rvar ($var)->rdef ($cond)->set_seen;
6296 }
6297 }
6300 # define_variable ($VAR, $VALUE, $WHERE)
6301 # --------------------------------------
6302 # Define a new Automake Makefile variable VAR to VALUE, but only if
6303 # not already defined.
6304 sub define_variable ($$$)
6305 {
6306 my ($var, $value, $where) = @_;
6307 define_pretty_variable ($var, TRUE, $where, $value);
6308 }
6311 # define_files_variable ($VAR, \@BASENAME, $EXTENSION, $WHERE)
6312 # -----------------------------------------------------------
6313 # Define the $VAR which content is the list of file names composed of
6314 # a @BASENAME and the $EXTENSION.
6315 sub define_files_variable ($\@$$)
6316 {
6317 my ($var, $basename, $extension, $where) = @_;
6318 define_variable ($var,
6319 join (' ', map { "$_.$extension" } @$basename),
6320 $where);
6321 }
6324 # Like define_variable, but define a variable to be the configure
6325 # substitution by the same name.
6326 sub define_configure_variable ($)
6327 {
6328 my ($var) = @_;
6330 my $pretty = VAR_ASIS;
6331 my $owner = VAR_CONFIGURE;
6333 # Some variables we do not want to output. For instance it
6334 # would be a bad idea to output `U = @U@` when `@U@` can be
6335 # substituted as `\`.
6336 $pretty = VAR_SILENT if exists $ignored_configure_vars{$var};
6338 # ANSI2KNR is a variable that Automake wants to redefine, so
6339 # it must be owned by Automake. (It is also used as a proof
6340 # that AM_C_PROTOTYPES has been run, that's why we do not simply
6341 # omit the AC_SUBST.)
6342 $owner = VAR_AUTOMAKE if $var eq 'ANSI2KNR';
6344 Automake::Variable::define ($var, $owner, '', TRUE, subst $var,
6345 '', $configure_vars{$var}, $pretty);
6346 }
6349 # define_compiler_variable ($LANG)
6350 # --------------------------------
6351 # Define a compiler variable. We also handle defining the `LT'
6352 # version of the command when using libtool.
6353 sub define_compiler_variable ($)
6354 {
6355 my ($lang) = @_;
6357 my ($var, $value) = ($lang->compiler, $lang->compile);
6358 my $libtool_tag = '';
6359 $libtool_tag = '--tag=' . $lang->libtool_tag . ' '
6360 if $lang->libtool_tag && exists $libtool_tags{$lang->libtool_tag};
6361 &define_variable ($var, $value, INTERNAL);
6362 if (var ('LIBTOOL'))
6363 {
6364 my $verbose = define_verbose_libtool ();
6365 &define_variable ("LT$var",
6366 "\$(LIBTOOL) $verbose $libtool_tag\$(AM_LIBTOOLFLAGS) "
6367 . "\$(LIBTOOLFLAGS) --mode=compile $value",
6368 INTERNAL);
6369 }
6370 define_verbose_tagvar ($lang->ccer || 'GEN');
6371 }
6374 # define_linker_variable ($LANG)
6375 # ------------------------------
6376 # Define linker variables.
6377 sub define_linker_variable ($)
6378 {
6379 my ($lang) = @_;
6381 my $libtool_tag = '';
6382 $libtool_tag = '--tag=' . $lang->libtool_tag . ' '
6383 if $lang->libtool_tag && exists $libtool_tags{$lang->libtool_tag};
6384 # CCLD = $(CC).
6385 &define_variable ($lang->lder, $lang->ld, INTERNAL);
6386 # CCLINK = $(CCLD) blah blah...
6387 my $link = '';
6388 if (var ('LIBTOOL'))
6389 {
6390 my $verbose = define_verbose_libtool ();
6391 $link = "\$(LIBTOOL) $verbose $libtool_tag\$(AM_LIBTOOLFLAGS) "
6392 . "\$(LIBTOOLFLAGS) --mode=link ";
6393 }
6394 &define_variable ($lang->linker, $link . $lang->link, INTERNAL);
6395 &define_variable ($lang->compiler, $lang);
6396 &define_verbose_tagvar ($lang->lder || 'GEN');
6397 }
6399 sub define_per_target_linker_variable ($$)
6400 {
6401 my ($linker, $target) = @_;
6403 # If the user wrote a custom link command, we don't define ours.
6404 return "${target}_LINK"
6405 if set_seen "${target}_LINK";
6407 my $xlink = $linker ? $linker : 'LINK';
6409 my $lang = $link_languages{$xlink};
6410 prog_error "Unknown language for linker variable `$xlink'"
6411 unless $lang;
6413 my $link_command = $lang->link;
6414 if (var 'LIBTOOL')
6415 {
6416 my $libtool_tag = '';
6417 $libtool_tag = '--tag=' . $lang->libtool_tag . ' '
6418 if $lang->libtool_tag && exists $libtool_tags{$lang->libtool_tag};
6420 my $verbose = define_verbose_libtool ();
6421 $link_command =
6422 "\$(LIBTOOL) $verbose $libtool_tag\$(AM_LIBTOOLFLAGS) \$(LIBTOOLFLAGS) "
6423 . "--mode=link " . $link_command;
6424 }
6426 # Rewrite each occurrence of `AM_$flag' in the link
6427 # command into `${derived}_$flag' if it exists.
6428 my $orig_command = $link_command;
6429 my @flags = (@{$lang->flags}, 'LDFLAGS');
6430 push @flags, 'LIBTOOLFLAGS' if var 'LIBTOOL';
6431 for my $flag (@flags)
6432 {
6433 my $val = "${target}_$flag";
6434 $link_command =~ s/\(AM_$flag\)/\($val\)/
6435 if set_seen ($val);
6436 }
6438 # If the computed command is the same as the generic command, use
6439 # the command linker variable.
6440 return ($lang->linker, $lang->lder)
6441 if $link_command eq $orig_command;
6443 &define_variable ("${target}_LINK", $link_command, INTERNAL);
6444 return ("${target}_LINK", $lang->lder);
6445 }
6447 ################################################################
6449 # &check_trailing_slash ($WHERE, $LINE)
6450 # --------------------------------------
6451 # Return 1 iff $LINE ends with a slash.
6452 # Might modify $LINE.
6453 sub check_trailing_slash ($\$)
6454 {
6455 my ($where, $line) = @_;
6457 # Ignore `##' lines.
6458 return 0 if $$line =~ /$IGNORE_PATTERN/o;
6460 # Catch and fix a common error.
6461 msg "syntax", $where, "whitespace following trailing backslash"
6462 if $$line =~ s/\\\s+\n$/\\\n/;
6464 return $$line =~ /\\$/;
6465 }
6468 # &read_am_file ($AMFILE, $WHERE)
6469 # -------------------------------
6470 # Read Makefile.am and set up %contents. Simultaneously copy lines
6471 # from Makefile.am into $output_trailer, or define variables as
6472 # appropriate. NOTE we put rules in the trailer section. We want
6473 # user rules to come after our generated stuff.
6474 sub read_am_file ($$)
6475 {
6476 my ($amfile, $where) = @_;
6478 my $am_file = new Automake::XFile ("< $amfile");
6479 verb "reading $amfile";
6481 # Keep track of the youngest output dependency.
6482 my $mtime = mtime $amfile;
6483 $output_deps_greatest_timestamp = $mtime
6484 if $mtime > $output_deps_greatest_timestamp;
6486 my $spacing = '';
6487 my $comment = '';
6488 my $blank = 0;
6489 my $saw_bk = 0;
6490 my $var_look = VAR_ASIS;
6492 use constant IN_VAR_DEF => 0;
6493 use constant IN_RULE_DEF => 1;
6494 use constant IN_COMMENT => 2;
6495 my $prev_state = IN_RULE_DEF;
6497 while ($_ = $am_file->getline)
6498 {
6499 $where->set ("$amfile:$.");
6500 if (/$IGNORE_PATTERN/o)
6501 {
6502 # Merely delete comments beginning with two hashes.
6503 }
6504 elsif (/$WHITE_PATTERN/o)
6505 {
6506 error $where, "blank line following trailing backslash"
6507 if $saw_bk;
6508 # Stick a single white line before the incoming macro or rule.
6509 $spacing = "\n";
6510 $blank = 1;
6511 # Flush all comments seen so far.
6512 if ($comment ne '')
6513 {
6514 $output_vars .= $comment;
6515 $comment = '';
6516 }
6517 }
6518 elsif (/$COMMENT_PATTERN/o)
6519 {
6520 # Stick comments before the incoming macro or rule. Make
6521 # sure a blank line precedes the first block of comments.
6522 $spacing = "\n" unless $blank;
6523 $blank = 1;
6524 $comment .= $spacing . $_;
6525 $spacing = '';
6526 $prev_state = IN_COMMENT;
6527 }
6528 else
6529 {
6530 last;
6531 }
6532 $saw_bk = check_trailing_slash ($where, $_);
6533 }
6535 # We save the conditional stack on entry, and then check to make
6536 # sure it is the same on exit. This lets us conditionally include
6537 # other files.
6538 my @saved_cond_stack = @cond_stack;
6539 my $cond = new Automake::Condition (@cond_stack);
6541 my $last_var_name = '';
6542 my $last_var_type = '';
6543 my $last_var_value = '';
6544 my $last_where;
6545 # FIXME: shouldn't use $_ in this loop; it is too big.
6546 while ($_)
6547 {
6548 $where->set ("$amfile:$.");
6550 # Make sure the line is \n-terminated.
6551 chomp;
6552 $_ .= "\n";
6554 # Don't look at MAINTAINER_MODE_TRUE here. That shouldn't be
6555 # used by users. @MAINT@ is an anachronism now.
6556 $_ =~ s/\@MAINT\@//g
6557 unless $seen_maint_mode;
6559 my $new_saw_bk = check_trailing_slash ($where, $_);
6561 if (/$IGNORE_PATTERN/o)
6562 {
6563 # Merely delete comments beginning with two hashes.
6565 # Keep any backslash from the previous line.
6566 $new_saw_bk = $saw_bk;
6567 }
6568 elsif (/$WHITE_PATTERN/o)
6569 {
6570 # Stick a single white line before the incoming macro or rule.
6571 $spacing = "\n";
6572 error $where, "blank line following trailing backslash"
6573 if $saw_bk;
6574 }
6575 elsif (/$COMMENT_PATTERN/o)
6576 {
6577 error $where, "comment following trailing backslash"
6578 if $saw_bk && $comment eq '';
6580 # Stick comments before the incoming macro or rule.
6581 $comment .= $spacing . $_;
6582 $spacing = '';
6583 $prev_state = IN_COMMENT;
6584 }
6585 elsif ($saw_bk)
6586 {
6587 if ($prev_state == IN_RULE_DEF)
6588 {
6589 my $cond = new Automake::Condition @cond_stack;
6590 $output_trailer .= $cond->subst_string;
6591 $output_trailer .= $_;
6592 }
6593 elsif ($prev_state == IN_COMMENT)
6594 {
6595 # If the line doesn't start with a `#', add it.
6596 # We do this because a continued comment like
6597 # # A = foo \
6598 # bar \
6599 # baz
6600 # is not portable. BSD make doesn't honor
6601 # escaped newlines in comments.
6602 s/^#?/#/;
6603 $comment .= $spacing . $_;
6604 }
6605 else # $prev_state == IN_VAR_DEF
6606 {
6607 $last_var_value .= ' '
6608 unless $last_var_value =~ /\s$/;
6609 $last_var_value .= $_;
6611 if (!/\\$/)
6612 {
6613 Automake::Variable::define ($last_var_name, VAR_MAKEFILE,
6614 $last_var_type, $cond,
6615 $last_var_value, $comment,
6616 $last_where, VAR_ASIS)
6617 if $cond != FALSE;
6618 $comment = $spacing = '';
6619 }
6620 }
6621 }
6623 elsif (/$IF_PATTERN/o)
6624 {
6625 $cond = cond_stack_if ($1, $2, $where);
6626 }
6627 elsif (/$ELSE_PATTERN/o)
6628 {
6629 $cond = cond_stack_else ($1, $2, $where);
6630 }
6631 elsif (/$ENDIF_PATTERN/o)
6632 {
6633 $cond = cond_stack_endif ($1, $2, $where);
6634 }
6636 elsif (/$RULE_PATTERN/o)
6637 {
6638 # Found a rule.
6639 $prev_state = IN_RULE_DEF;
6641 # For now we have to output all definitions of user rules
6642 # and can't diagnose duplicates (see the comment in
6643 # Automake::Rule::define). So we go on and ignore the return value.
6644 Automake::Rule::define ($1, $amfile, RULE_USER, $cond, $where);
6646 check_variable_expansions ($_, $where);
6648 $output_trailer .= $comment . $spacing;
6649 my $cond = new Automake::Condition @cond_stack;
6650 $output_trailer .= $cond->subst_string;
6651 $output_trailer .= $_;
6652 $comment = $spacing = '';
6653 }
6654 elsif (/$ASSIGNMENT_PATTERN/o)
6655 {
6656 # Found a macro definition.
6657 $prev_state = IN_VAR_DEF;
6658 $last_var_name = $1;
6659 $last_var_type = $2;
6660 $last_var_value = $3;
6661 $last_where = $where->clone;
6662 if ($3 ne '' && substr ($3, -1) eq "\\")
6663 {
6664 # We preserve the `\' because otherwise the long lines
6665 # that are generated will be truncated by broken
6666 # `sed's.
6667 $last_var_value = $3 . "\n";
6668 }
6669 # Normally we try to output variable definitions in the
6670 # same format they were input. However, POSIX compliant
6671 # systems are not required to support lines longer than
6672 # 2048 bytes (most notably, some sed implementation are
6673 # limited to 4000 bytes, and sed is used by config.status
6674 # to rewrite Makefile.in into Makefile). Moreover nobody
6675 # would really write such long lines by hand since it is
6676 # hardly maintainable. So if a line is longer that 1000
6677 # bytes (an arbitrary limit), assume it has been
6678 # automatically generated by some tools, and flatten the
6679 # variable definition. Otherwise, keep the variable as it
6680 # as been input.
6681 $var_look = VAR_PRETTY if length ($last_var_value) >= 1000;
6683 if (!/\\$/)
6684 {
6685 Automake::Variable::define ($last_var_name, VAR_MAKEFILE,
6686 $last_var_type, $cond,
6687 $last_var_value, $comment,
6688 $last_where, $var_look)
6689 if $cond != FALSE;
6690 $comment = $spacing = '';
6691 $var_look = VAR_ASIS;
6692 }
6693 }
6694 elsif (/$INCLUDE_PATTERN/o)
6695 {
6696 my $path = $1;
6698 if ($path =~ s/^\$\(top_srcdir\)\///)
6699 {
6700 push (@include_stack, "\$\(top_srcdir\)/$path");
6701 # Distribute any included file.
6703 # Always use the $(top_srcdir) prefix in DIST_COMMON,
6704 # otherwise OSF make will implicitly copy the included
6705 # file in the build tree during `make distdir' to satisfy
6706 # the dependency.
6707 # (subdircond2.test and subdircond3.test will fail.)
6708 push_dist_common ("\$\(top_srcdir\)/$path");
6709 }
6710 else
6711 {
6712 $path =~ s/\$\(srcdir\)\///;
6713 push (@include_stack, "\$\(srcdir\)/$path");
6714 # Always use the $(srcdir) prefix in DIST_COMMON,
6715 # otherwise OSF make will implicitly copy the included
6716 # file in the build tree during `make distdir' to satisfy
6717 # the dependency.
6718 # (subdircond2.test and subdircond3.test will fail.)
6719 push_dist_common ("\$\(srcdir\)/$path");
6720 $path = $relative_dir . "/" . $path if $relative_dir ne '.';
6721 }
6722 $where->push_context ("`$path' included from here");
6723 &read_am_file ($path, $where);
6724 $where->pop_context;
6725 }
6726 else
6727 {
6728 # This isn't an error; it is probably a continued rule.
6729 # In fact, this is what we assume.
6730 $prev_state = IN_RULE_DEF;
6731 check_variable_expansions ($_, $where);
6732 $output_trailer .= $comment . $spacing;
6733 my $cond = new Automake::Condition @cond_stack;
6734 $output_trailer .= $cond->subst_string;
6735 $output_trailer .= $_;
6736 $comment = $spacing = '';
6737 error $where, "`#' comment at start of rule is unportable"
6738 if $_ =~ /^\t\s*\#/;
6739 }
6741 $saw_bk = $new_saw_bk;
6742 $_ = $am_file->getline;
6743 }
6745 $output_trailer .= $comment;
6747 error ($where, "trailing backslash on last line")
6748 if $saw_bk;
6750 error ($where, (@cond_stack ? "unterminated conditionals: @cond_stack"
6751 : "too many conditionals closed in include file"))
6752 if "@saved_cond_stack" ne "@cond_stack";
6753 }
6756 # define_standard_variables ()
6757 # ----------------------------
6758 # A helper for read_main_am_file which initializes configure variables
6759 # and variables from header-vars.am.
6760 sub define_standard_variables
6761 {
6762 my $saved_output_vars = $output_vars;
6763 my ($comments, undef, $rules) =
6764 file_contents_internal (1, "$libdir/am/header-vars.am",
6765 new Automake::Location);
6767 foreach my $var (sort keys %configure_vars)
6768 {
6769 &define_configure_variable ($var);
6770 }
6772 $output_vars .= $comments . $rules;
6773 }
6775 # Read main am file.
6776 sub read_main_am_file
6777 {
6778 my ($amfile) = @_;
6780 # This supports the strange variable tricks we are about to play.
6781 prog_error (macros_dump () . "variable defined before read_main_am_file")
6782 if (scalar (variables) > 0);
6784 # Generate copyright header for generated Makefile.in.
6785 # We do discard the output of predefined variables, handled below.
6786 $output_vars = ("# $in_file_name generated by automake "
6787 . $VERSION . " from $am_file_name.\n");
6788 $output_vars .= '# ' . subst ('configure_input') . "\n";
6789 $output_vars .= $gen_copyright;
6791 # We want to predefine as many variables as possible. This lets
6792 # the user set them with `+=' in Makefile.am.
6793 &define_standard_variables;
6795 # Read user file, which might override some of our values.
6796 &read_am_file ($amfile, new Automake::Location);
6797 }
6801 ################################################################
6803 # $FLATTENED
6804 # &flatten ($STRING)
6805 # ------------------
6806 # Flatten the $STRING and return the result.
6807 sub flatten
6808 {
6809 $_ = shift;
6811 s/\\\n//somg;
6812 s/\s+/ /g;
6813 s/^ //;
6814 s/ $//;
6816 return $_;
6817 }
6820 # transform_token ($TOKEN, \%PAIRS, $KEY)
6821 # =======================================
6822 # Return the value associated to $KEY in %PAIRS, as used on $TOKEN
6823 # (which should be ?KEY? or any of the special %% requests)..
6824 sub transform_token ($$$)
6825 {
6826 my ($token, $transform, $key) = @_;
6827 my $res = $transform->{$key};
6828 prog_error "Unknown key `$key' in `$token'" unless defined $res;
6829 return $res;
6830 }
6833 # transform ($TOKEN, \%PAIRS)
6834 # ===========================
6835 # If ($TOKEN, $VAL) is in %PAIRS:
6836 # - replaces %KEY% with $VAL,
6837 # - enables/disables ?KEY? and ?!KEY?,
6838 # - replaces %?KEY% with TRUE or FALSE.
6839 # - replaces %KEY?IFTRUE%, %KEY:IFFALSE%, and %KEY?IFTRUE:IFFALSE% with
6840 # IFTRUE / IFFALSE, as appropriate.
6841 sub transform ($$)
6842 {
6843 my ($token, $transform) = @_;
6845 # %KEY%.
6846 # Must be before the following pattern to exclude the case
6847 # when there is neither IFTRUE nor IFFALSE.
6848 if ($token =~ /^%([\w\-]+)%$/)
6849 {
6850 return transform_token ($token, $transform, $1);
6851 }
6852 # %KEY?IFTRUE%, %KEY:IFFALSE%, and %KEY?IFTRUE:IFFALSE%.
6853 elsif ($token =~ /^%([\w\-]+)(?:\?([^?:%]+))?(?::([^?:%]+))?%$/)
6854 {
6855 return transform_token ($token, $transform, $1) ? ($2 || '') : ($3 || '');
6856 }
6857 # %?KEY%.
6858 elsif ($token =~ /^%\?([\w\-]+)%$/)
6859 {
6860 return transform_token ($token, $transform, $1) ? 'TRUE' : 'FALSE';
6861 }
6862 # ?KEY? and ?!KEY?.
6863 elsif ($token =~ /^ \? (!?) ([\w\-]+) \? $/x)
6864 {
6865 my $neg = ($1 eq '!') ? 1 : 0;
6866 my $val = transform_token ($token, $transform, $2);
6867 return (!!$val == $neg) ? '##%' : '';
6868 }
6869 else
6870 {
6871 prog_error "Unknown request format: $token";
6872 }
6873 }
6876 # @PARAGRAPHS
6877 # &make_paragraphs ($MAKEFILE, [%TRANSFORM])
6878 # ------------------------------------------
6879 # Load a $MAKEFILE, apply the %TRANSFORM, and return it as a list of
6880 # paragraphs.
6881 sub make_paragraphs ($%)
6882 {
6883 my ($file, %transform) = @_;
6885 # Complete %transform with global options.
6886 # Note that %transform goes last, so it overrides global options.
6887 %transform = ('CYGNUS' => !! option 'cygnus',
6888 'MAINTAINER-MODE'
6889 => $seen_maint_mode ? subst ('MAINTAINER_MODE_TRUE') : '',
6891 'XZ' => !! option 'dist-xz',
6892 'LZMA' => !! option 'dist-lzma',
6893 'BZIP2' => !! option 'dist-bzip2',
6894 'COMPRESS' => !! option 'dist-tarZ',
6895 'GZIP' => ! option 'no-dist-gzip',
6896 'SHAR' => !! option 'dist-shar',
6897 'ZIP' => !! option 'dist-zip',
6899 'INSTALL-INFO' => ! option 'no-installinfo',
6900 'INSTALL-MAN' => ! option 'no-installman',
6901 'HAVE-MANS' => !! var ('MANS'),
6902 'CK-NEWS' => !! option 'check-news',
6904 'SUBDIRS' => !! var ('SUBDIRS'),
6905 'TOPDIR_P' => $relative_dir eq '.',
6907 'BUILD' => ($seen_canonical >= AC_CANONICAL_BUILD),
6908 'HOST' => ($seen_canonical >= AC_CANONICAL_HOST),
6909 'TARGET' => ($seen_canonical >= AC_CANONICAL_TARGET),
6911 'LIBTOOL' => !! var ('LIBTOOL'),
6912 'NONLIBTOOL' => 1,
6913 'FIRST' => ! $transformed_files{$file},
6914 %transform);
6916 $transformed_files{$file} = 1;
6917 $_ = $am_file_cache{$file};
6919 if (! defined $_)
6920 {
6921 verb "reading $file";
6922 # Swallow the whole file.
6923 my $fc_file = new Automake::XFile "< $file";
6924 my $saved_dollar_slash = $/;
6925 undef $/;
6926 $_ = $fc_file->getline;
6927 $/ = $saved_dollar_slash;
6928 $fc_file->close;
6930 # Remove ##-comments.
6931 # Besides we don't need more than two consecutive new-lines.
6932 s/(?:$IGNORE_PATTERN|(?<=\n\n)\n+)//gom;
6934 $am_file_cache{$file} = $_;
6935 }
6937 # Substitute Automake template tokens.
6938 s/(?: % \?? [\w\-]+ %
6939 | % [\w\-]+ (?:\?[^?:%]+)? (?::[^?:%]+)? %
6940 | \? !? [\w\-]+ \?
6941 )/transform($&, \%transform)/gex;
6942 # transform() may have added some ##%-comments to strip.
6943 # (we use `##%' instead of `##' so we can distinguish ##%##%##% from
6944 # ####### and do not remove the latter.)
6945 s/^[ \t]*(?:##%)+.*\n//gm;
6947 # Split at unescaped new lines.
6948 my @lines = split (/(?<!\\)\n/, $_);
6949 my @res;
6951 while (defined ($_ = shift @lines))
6952 {
6953 my $paragraph = $_;
6954 # If we are a rule, eat as long as we start with a tab.
6955 if (/$RULE_PATTERN/smo)
6956 {
6957 while (defined ($_ = shift @lines) && $_ =~ /^\t/)
6958 {
6959 $paragraph .= "\n$_";
6960 }
6961 unshift (@lines, $_);
6962 }
6964 # If we are a comments, eat as much comments as you can.
6965 elsif (/$COMMENT_PATTERN/smo)
6966 {
6967 while (defined ($_ = shift @lines)
6968 && $_ =~ /$COMMENT_PATTERN/smo)
6969 {
6970 $paragraph .= "\n$_";
6971 }
6972 unshift (@lines, $_);
6973 }
6975 push @res, $paragraph;
6976 }
6978 return @res;
6979 }
6983 # ($COMMENT, $VARIABLES, $RULES)
6984 # &file_contents_internal ($IS_AM, $FILE, $WHERE, [%TRANSFORM])
6985 # -------------------------------------------------------------
6986 # Return contents of a file from $libdir/am, automatically skipping
6987 # macros or rules which are already known. $IS_AM iff the caller is
6988 # reading an Automake file (as opposed to the user's Makefile.am).
6989 sub file_contents_internal ($$$%)
6990 {
6991 my ($is_am, $file, $where, %transform) = @_;
6993 $where->set ($file);
6995 my $result_vars = '';
6996 my $result_rules = '';
6997 my $comment = '';
6998 my $spacing = '';
7000 # The following flags are used to track rules spanning across
7001 # multiple paragraphs.
7002 my $is_rule = 0; # 1 if we are processing a rule.
7003 my $discard_rule = 0; # 1 if the current rule should not be output.
7005 # We save the conditional stack on entry, and then check to make
7006 # sure it is the same on exit. This lets us conditionally include
7007 # other files.
7008 my @saved_cond_stack = @cond_stack;
7009 my $cond = new Automake::Condition (@cond_stack);
7011 foreach (make_paragraphs ($file, %transform))
7012 {
7013 # FIXME: no line number available.
7014 $where->set ($file);
7016 # Sanity checks.
7017 error $where, "blank line following trailing backslash:\n$_"
7018 if /\\$/;
7019 error $where, "comment following trailing backslash:\n$_"
7020 if /\\#/;
7022 if (/^$/)
7023 {
7024 $is_rule = 0;
7025 # Stick empty line before the incoming macro or rule.
7026 $spacing = "\n";
7027 }
7028 elsif (/$COMMENT_PATTERN/mso)
7029 {
7030 $is_rule = 0;
7031 # Stick comments before the incoming macro or rule.
7032 $comment = "$_\n";
7033 }
7035 # Handle inclusion of other files.
7036 elsif (/$INCLUDE_PATTERN/o)
7037 {
7038 if ($cond != FALSE)
7039 {
7040 my $file = ($is_am ? "$libdir/am/" : '') . $1;
7041 $where->push_context ("`$file' included from here");
7042 # N-ary `.=' fails.
7043 my ($com, $vars, $rules)
7044 = file_contents_internal ($is_am, $file, $where, %transform);
7045 $where->pop_context;
7046 $comment .= $com;
7047 $result_vars .= $vars;
7048 $result_rules .= $rules;
7049 }
7050 }
7052 # Handling the conditionals.
7053 elsif (/$IF_PATTERN/o)
7054 {
7055 $cond = cond_stack_if ($1, $2, $file);
7056 }
7057 elsif (/$ELSE_PATTERN/o)
7058 {
7059 $cond = cond_stack_else ($1, $2, $file);
7060 }
7061 elsif (/$ENDIF_PATTERN/o)
7062 {
7063 $cond = cond_stack_endif ($1, $2, $file);
7064 }
7066 # Handling rules.
7067 elsif (/$RULE_PATTERN/mso)
7068 {
7069 $is_rule = 1;
7070 $discard_rule = 0;
7071 # Separate relationship from optional actions: the first
7072 # `new-line tab" not preceded by backslash (continuation
7073 # line).
7074 my $paragraph = $_;
7075 /^(.*?)(?:(?<!\\)\n(\t.*))?$/s;
7076 my ($relationship, $actions) = ($1, $2 || '');
7078 # Separate targets from dependencies: the first colon.
7079 $relationship =~ /^([^:]+\S+) *: *(.*)$/som;
7080 my ($targets, $dependencies) = ($1, $2);
7081 # Remove the escaped new lines.
7082 # I don't know why, but I have to use a tmp $flat_deps.
7083 my $flat_deps = &flatten ($dependencies);
7084 my @deps = split (' ', $flat_deps);
7086 foreach (split (' ', $targets))
7087 {
7088 # FIXME: 1. We are not robust to people defining several targets
7089 # at once, only some of them being in %dependencies. The
7090 # actions from the targets in %dependencies are usually generated
7091 # from the content of %actions, but if some targets in $targets
7092 # are not in %dependencies the ELSE branch will output
7093 # a rule for all $targets (i.e. the targets which are both
7094 # in %dependencies and $targets will have two rules).
7096 # FIXME: 2. The logic here is not able to output a
7097 # multi-paragraph rule several time (e.g. for each condition
7098 # it is defined for) because it only knows the first paragraph.
7100 # FIXME: 3. We are not robust to people defining a subset
7101 # of a previously defined "multiple-target" rule. E.g.
7102 # `foo:' after `foo bar:'.
7104 # Output only if not in FALSE.
7105 if (defined $dependencies{$_} && $cond != FALSE)
7106 {
7107 &depend ($_, @deps);
7108 register_action ($_, $actions);
7109 }
7110 else
7111 {
7112 # Free-lance dependency. Output the rule for all the
7113 # targets instead of one by one.
7114 my @undefined_conds =
7115 Automake::Rule::define ($targets, $file,
7116 $is_am ? RULE_AUTOMAKE : RULE_USER,
7117 $cond, $where);
7118 for my $undefined_cond (@undefined_conds)
7119 {
7120 my $condparagraph = $paragraph;
7121 $condparagraph =~ s/^/$undefined_cond->subst_string/gme;
7122 $result_rules .= "$spacing$comment$condparagraph\n";
7123 }
7124 if (scalar @undefined_conds == 0)
7125 {
7126 # Remember to discard next paragraphs
7127 # if they belong to this rule.
7128 # (but see also FIXME: #2 above.)
7129 $discard_rule = 1;
7130 }
7131 $comment = $spacing = '';
7132 last;
7133 }
7134 }
7135 }
7137 elsif (/$ASSIGNMENT_PATTERN/mso)
7138 {
7139 my ($var, $type, $val) = ($1, $2, $3);
7140 error $where, "variable `$var' with trailing backslash"
7141 if /\\$/;
7143 $is_rule = 0;
7145 Automake::Variable::define ($var,
7146 $is_am ? VAR_AUTOMAKE : VAR_MAKEFILE,
7147 $type, $cond, $val, $comment, $where,
7148 VAR_ASIS)
7149 if $cond != FALSE;
7151 $comment = $spacing = '';
7152 }
7153 else
7154 {
7155 # This isn't an error; it is probably some tokens which
7156 # configure is supposed to replace, such as `@SET-MAKE@',
7157 # or some part of a rule cut by an if/endif.
7158 if (! $cond->false && ! ($is_rule && $discard_rule))
7159 {
7160 s/^/$cond->subst_string/gme;
7161 $result_rules .= "$spacing$comment$_\n";
7162 }
7163 $comment = $spacing = '';
7164 }
7165 }
7167 error ($where, @cond_stack ?
7168 "unterminated conditionals: @cond_stack" :
7169 "too many conditionals closed in include file")
7170 if "@saved_cond_stack" ne "@cond_stack";
7172 return ($comment, $result_vars, $result_rules);
7173 }
7176 # $CONTENTS
7177 # &file_contents ($BASENAME, $WHERE, [%TRANSFORM])
7178 # ------------------------------------------------
7179 # Return contents of a file from $libdir/am, automatically skipping
7180 # macros or rules which are already known.
7181 sub file_contents ($$%)
7182 {
7183 my ($basename, $where, %transform) = @_;
7184 my ($comments, $variables, $rules) =
7185 file_contents_internal (1, "$libdir/am/$basename.am", $where,
7186 %transform);
7187 return "$comments$variables$rules";
7188 }
7191 # @PREFIX
7192 # &am_primary_prefixes ($PRIMARY, $CAN_DIST, @PREFIXES)
7193 # -----------------------------------------------------
7194 # Find all variable prefixes that are used for install directories. A
7195 # prefix `zar' qualifies iff:
7196 #
7197 # * `zardir' is a variable.
7198 # * `zar_PRIMARY' is a variable.
7199 #
7200 # As a side effect, it looks for misspellings. It is an error to have
7201 # a variable ending in a "reserved" suffix whose prefix is unknown, e.g.
7202 # "bni_PROGRAMS". However, unusual prefixes are allowed if a variable
7203 # of the same name (with "dir" appended) exists. For instance, if the
7204 # variable "zardir" is defined, then "zar_PROGRAMS" becomes valid.
7205 # This is to provide a little extra flexibility in those cases which
7206 # need it.
7207 sub am_primary_prefixes ($$@)
7208 {
7209 my ($primary, $can_dist, @prefixes) = @_;
7211 local $_;
7212 my %valid = map { $_ => 0 } @prefixes;
7213 $valid{'EXTRA'} = 0;
7214 foreach my $var (variables $primary)
7215 {
7216 # Automake is allowed to define variables that look like primaries
7217 # but which aren't. E.g. INSTALL_sh_DATA.
7218 # Autoconf can also define variables like INSTALL_DATA, so
7219 # ignore all configure variables (at least those which are not
7220 # redefined in Makefile.am).
7221 # FIXME: We should make sure that these variables are not
7222 # conditionally defined (or else adjust the condition below).
7223 my $def = $var->def (TRUE);
7224 next if $def && $def->owner != VAR_MAKEFILE;
7226 my $varname = $var->name;
7228 if ($varname =~ /^(nobase_)?(dist_|nodist_)?(.*)_[[:alnum:]]+$/)
7229 {
7230 my ($base, $dist, $X) = ($1 || '', $2 || '', $3 || '');
7231 if ($dist ne '' && ! $can_dist)
7232 {
7233 err_var ($var,
7234 "invalid variable `$varname': `dist' is forbidden");
7235 }
7236 # Standard directories must be explicitly allowed.
7237 elsif (! defined $valid{$X} && exists $standard_prefix{$X})
7238 {
7239 err_var ($var,
7240 "`${X}dir' is not a legitimate directory " .
7241 "for `$primary'");
7242 }
7243 # A not explicitly valid directory is allowed if Xdir is defined.
7244 elsif (! defined $valid{$X} &&
7245 $var->requires_variables ("`$varname' is used", "${X}dir"))
7246 {
7247 # Nothing to do. Any error message has been output
7248 # by $var->requires_variables.
7249 }
7250 else
7251 {
7252 # Ensure all extended prefixes are actually used.
7253 $valid{"$base$dist$X"} = 1;
7254 }
7255 }
7256 else
7257 {
7258 prog_error "unexpected variable name: $varname";
7259 }
7260 }
7262 # Return only those which are actually defined.
7263 return sort grep { var ($_ . '_' . $primary) } keys %valid;
7264 }
7267 # Handle `where_HOW' variable magic. Does all lookups, generates
7268 # install code, and possibly generates code to define the primary
7269 # variable. The first argument is the name of the .am file to munge,
7270 # the second argument is the primary variable (e.g. HEADERS), and all
7271 # subsequent arguments are possible installation locations.
7272 #
7273 # Returns list of [$location, $value] pairs, where
7274 # $value's are the values in all where_HOW variable, and $location
7275 # there associated location (the place here their parent variables were
7276 # defined).
7277 #
7278 # FIXME: this should be rewritten to be cleaner. It should be broken
7279 # up into multiple functions.
7280 #
7281 # Usage is: am_install_var (OPTION..., file, HOW, where...)
7282 sub am_install_var
7283 {
7284 my (@args) = @_;
7286 my $do_require = 1;
7287 my $can_dist = 0;
7288 my $default_dist = 0;
7289 while (@args)
7290 {
7291 if ($args[0] eq '-noextra')
7292 {
7293 $do_require = 0;
7294 }
7295 elsif ($args[0] eq '-candist')
7296 {
7297 $can_dist = 1;
7298 }
7299 elsif ($args[0] eq '-defaultdist')
7300 {
7301 $default_dist = 1;
7302 $can_dist = 1;
7303 }
7304 elsif ($args[0] !~ /^-/)
7305 {
7306 last;
7307 }
7308 shift (@args);
7309 }
7311 my ($file, $primary, @prefix) = @args;
7313 # Now that configure substitutions are allowed in where_HOW
7314 # variables, it is an error to actually define the primary. We
7315 # allow `JAVA', as it is customarily used to mean the Java
7316 # interpreter. This is but one of several Java hacks. Similarly,
7317 # `PYTHON' is customarily used to mean the Python interpreter.
7318 reject_var $primary, "`$primary' is an anachronism"
7319 unless $primary eq 'JAVA' || $primary eq 'PYTHON';
7321 # Get the prefixes which are valid and actually used.
7322 @prefix = am_primary_prefixes ($primary, $can_dist, @prefix);
7324 # If a primary includes a configure substitution, then the EXTRA_
7325 # form is required. Otherwise we can't properly do our job.
7326 my $require_extra;
7328 my @used = ();
7329 my @result = ();
7331 foreach my $X (@prefix)
7332 {
7333 my $nodir_name = $X;
7334 my $one_name = $X . '_' . $primary;
7335 my $one_var = var $one_name;
7337 my $strip_subdir = 1;
7338 # If subdir prefix should be preserved, do so.
7339 if ($nodir_name =~ /^nobase_/)
7340 {
7341 $strip_subdir = 0;
7342 $nodir_name =~ s/^nobase_//;
7343 }
7345 # If files should be distributed, do so.
7346 my $dist_p = 0;
7347 if ($can_dist)
7348 {
7349 $dist_p = (($default_dist && $nodir_name !~ /^nodist_/)
7350 || (! $default_dist && $nodir_name =~ /^dist_/));
7351 $nodir_name =~ s/^(dist|nodist)_//;
7352 }
7355 # Use the location of the currently processed variable.
7356 # We are not processing a particular condition, so pick the first
7357 # available.
7358 my $tmpcond = $one_var->conditions->one_cond;
7359 my $where = $one_var->rdef ($tmpcond)->location->clone;
7361 # Append actual contents of where_PRIMARY variable to
7362 # @result, skipping @substitutions@.
7363 foreach my $locvals ($one_var->value_as_list_recursive (location => 1))
7364 {
7365 my ($loc, $value) = @$locvals;
7366 # Skip configure substitutions.
7367 if ($value =~ /^\@.*\@$/)
7368 {
7369 if ($nodir_name eq 'EXTRA')
7370 {
7371 error ($where,
7372 "`$one_name' contains configure substitution, "
7373 . "but shouldn't");
7374 }
7375 # Check here to make sure variables defined in
7376 # configure.ac do not imply that EXTRA_PRIMARY
7377 # must be defined.
7378 elsif (! defined $configure_vars{$one_name})
7379 {
7380 $require_extra = $one_name
7381 if $do_require;
7382 }
7383 }
7384 else
7385 {
7386 push (@result, $locvals);
7387 }
7388 }
7389 # A blatant hack: we rewrite each _PROGRAMS primary to include
7390 # EXEEXT.
7391 append_exeext { 1 } $one_name
7392 if $primary eq 'PROGRAMS';
7393 # "EXTRA" shouldn't be used when generating clean targets,
7394 # all, or install targets. We used to warn if EXTRA_FOO was
7395 # defined uselessly, but this was annoying.
7396 next
7397 if $nodir_name eq 'EXTRA';
7399 if ($nodir_name eq 'check')
7400 {
7401 push (@check, '$(' . $one_name . ')');
7402 }
7403 else
7404 {
7405 push (@used, '$(' . $one_name . ')');
7406 }
7408 # Is this to be installed?
7409 my $install_p = $nodir_name ne 'noinst' && $nodir_name ne 'check';
7411 # If so, with install-exec? (or install-data?).
7412 my $exec_p = ($nodir_name =~ /$EXEC_DIR_PATTERN/o);
7414 my $check_options_p = $install_p && !! option 'std-options';
7416 # Use the location of the currently processed variable as context.
7417 $where->push_context ("while processing `$one_name'");
7419 # The variable containing all files to distribute.
7420 my $distvar = "\$($one_name)";
7421 $distvar = shadow_unconditionally ($one_name, $where)
7422 if ($dist_p && $one_var->has_conditional_contents);
7424 # Singular form of $PRIMARY.
7425 (my $one_primary = $primary) =~ s/S$//;
7426 $output_rules .= &file_contents ($file, $where,
7427 PRIMARY => $primary,
7428 ONE_PRIMARY => $one_primary,
7429 DIR => $X,
7430 NDIR => $nodir_name,
7431 BASE => $strip_subdir,
7433 EXEC => $exec_p,
7434 INSTALL => $install_p,
7435 DIST => $dist_p,
7436 DISTVAR => $distvar,
7437 'CK-OPTS' => $check_options_p);
7438 }
7440 # The JAVA variable is used as the name of the Java interpreter.
7441 # The PYTHON variable is used as the name of the Python interpreter.
7442 if (@used && $primary ne 'JAVA' && $primary ne 'PYTHON')
7443 {
7444 # Define it.
7445 define_pretty_variable ($primary, TRUE, INTERNAL, @used);
7446 $output_vars .= "\n";
7447 }
7449 err_var ($require_extra,
7450 "`$require_extra' contains configure substitution,\n"
7451 . "but `EXTRA_$primary' not defined")
7452 if ($require_extra && ! var ('EXTRA_' . $primary));
7454 # Push here because PRIMARY might be configure time determined.
7455 push (@all, '$(' . $primary . ')')
7456 if @used && $primary ne 'JAVA' && $primary ne 'PYTHON';
7458 # Make the result unique. This lets the user use conditionals in
7459 # a natural way, but still lets us program lazily -- we don't have
7460 # to worry about handling a particular object more than once.
7461 # We will keep only one location per object.
7462 my %result = ();
7463 for my $pair (@result)
7464 {
7465 my ($loc, $val) = @$pair;
7466 $result{$val} = $loc;
7467 }
7468 my @l = sort keys %result;
7469 return map { [$result{$_}->clone, $_] } @l;
7470 }
7473 ################################################################
7475 # Each key in this hash is the name of a directory holding a
7476 # Makefile.in. These variables are local to `is_make_dir'.
7477 my %make_dirs = ();
7478 my $make_dirs_set = 0;
7480 sub is_make_dir
7481 {
7482 my ($dir) = @_;
7483 if (! $make_dirs_set)
7484 {
7485 foreach my $iter (@configure_input_files)
7486 {
7487 $make_dirs{dirname ($iter)} = 1;
7488 }
7489 # We also want to notice Makefile.in's.
7490 foreach my $iter (@other_input_files)
7491 {
7492 if ($iter =~ /Makefile\.in$/)
7493 {
7494 $make_dirs{dirname ($iter)} = 1;
7495 }
7496 }
7497 $make_dirs_set = 1;
7498 }
7499 return defined $make_dirs{$dir};
7500 }
7502 ################################################################
7504 # Find the aux dir. This should match the algorithm used by
7505 # ./configure. (See the Autoconf documentation for for
7506 # AC_CONFIG_AUX_DIR.)
7507 sub locate_aux_dir ()
7508 {
7509 if (! $config_aux_dir_set_in_configure_ac)
7510 {
7511 # The default auxiliary directory is the first
7512 # of ., .., or ../.. that contains install-sh.
7513 # Assume . if install-sh doesn't exist yet.
7514 for my $dir (qw (. .. ../..))
7515 {
7516 if (-f "$dir/install-sh")
7517 {
7518 $config_aux_dir = $dir;
7519 last;
7520 }
7521 }
7522 $config_aux_dir = '.' unless $config_aux_dir;
7523 }
7524 # Avoid unsightly '/.'s.
7525 $am_config_aux_dir =
7526 '$(top_srcdir)' . ($config_aux_dir eq '.' ? "" : "/$config_aux_dir");
7527 $am_config_aux_dir =~ s,/*$,,;
7528 }
7531 # &maybe_push_required_file ($DIR, $FILE, $FULLFILE)
7532 # --------------------------------------------------
7533 # See if we want to push this file onto dist_common. This function
7534 # encodes the rules for deciding when to do so.
7535 sub maybe_push_required_file
7536 {
7537 my ($dir, $file, $fullfile) = @_;
7539 if ($dir eq $relative_dir)
7540 {
7541 push_dist_common ($file);
7542 return 1;
7543 }
7544 elsif ($relative_dir eq '.' && ! &is_make_dir ($dir))
7545 {
7546 # If we are doing the topmost directory, and the file is in a
7547 # subdir which does not have a Makefile, then we distribute it
7548 # here.
7550 # If a required file is above the source tree, it is important
7551 # to prefix it with `$(srcdir)' so that no VPATH search is
7552 # performed. Otherwise problems occur with Make implementations
7553 # that rewrite and simplify rules whose dependencies are found in a
7554 # VPATH location. Here is an example with OSF1/Tru64 Make.
7555 #
7556 # % cat Makefile
7557 # VPATH = sub
7558 # distdir: ../a
7559 # echo ../a
7560 # % ls
7561 # Makefile a
7562 # % make
7563 # echo a
7564 # a
7565 #
7566 # Dependency `../a' was found in `sub/../a', but this make
7567 # implementation simplified it as `a'. (Note that the sub/
7568 # directory does not even exist.)
7569 #
7570 # This kind of VPATH rewriting seems hard to cancel. The
7571 # distdir.am hack against VPATH rewriting works only when no
7572 # simplification is done, i.e., for dependencies which are in
7573 # subdirectories, not in enclosing directories. Hence, in
7574 # the latter case we use a full path to make sure no VPATH
7575 # search occurs.
7576 $fullfile = '$(srcdir)/' . $fullfile
7577 if $dir =~ m,^\.\.(?:$|/),;
7579 push_dist_common ($fullfile);
7580 return 1;
7581 }
7582 return 0;
7583 }
7586 # If a file name appears as a key in this hash, then it has already
7587 # been checked for. This allows us not to report the same error more
7588 # than once.
7589 my %required_file_not_found = ();
7591 # &require_file_internal ($WHERE, $MYSTRICT, $DIRECTORY, @FILES)
7592 # --------------------------------------------------------------
7593 # Verify that the file must exist in $DIRECTORY, or install it.
7594 # $MYSTRICT is the strictness level at which this file becomes required.
7595 sub require_file_internal ($$$@)
7596 {
7597 my ($where, $mystrict, $dir, @files) = @_;
7599 foreach my $file (@files)
7600 {
7601 my $fullfile = "$dir/$file";
7602 my $found_it = 0;
7603 my $dangling_sym = 0;
7605 if (-l $fullfile && ! -f $fullfile)
7606 {
7607 $dangling_sym = 1;
7608 }
7609 elsif (dir_has_case_matching_file ($dir, $file))
7610 {
7611 $found_it = 1;
7612 maybe_push_required_file ($dir, $file, $fullfile);
7613 }
7615 # `--force-missing' only has an effect if `--add-missing' is
7616 # specified.
7617 if ($found_it && (! $add_missing || ! $force_missing))
7618 {
7619 next;
7620 }
7621 else
7622 {
7623 # If we've already looked for it, we're done. You might
7624 # wonder why we don't do this before searching for the
7625 # file. If we do that, then something like
7626 # AC_OUTPUT(subdir/foo foo) will fail to put foo.in into
7627 # DIST_COMMON.
7628 if (! $found_it)
7629 {
7630 next if defined $required_file_not_found{$fullfile};
7631 $required_file_not_found{$fullfile} = 1;
7632 }
7634 if ($strictness >= $mystrict)
7635 {
7636 if ($dangling_sym && $add_missing)
7637 {
7638 unlink ($fullfile);
7639 }
7641 my $trailer = '';
7642 my $trailer2 = '';
7643 my $suppress = 0;
7645 # Only install missing files according to our desired
7646 # strictness level.
7647 my $message = "required file `$fullfile' not found";
7648 if ($add_missing)
7649 {
7650 if (-f "$libdir/$file")
7651 {
7652 $suppress = 1;
7654 # Install the missing file. Symlink if we
7655 # can, copy if we must. Note: delete the file
7656 # first, in case it is a dangling symlink.
7657 $message = "installing `$fullfile'";
7659 # The license file should not be volatile.
7660 if ($file eq "COPYING")
7661 {
7662 $message .= " using GNU General Public License v3 file";
7663 $trailer2 = "\n Consider adding the COPYING file"
7664 . " to the version control system"
7665 . "\n for your code, to avoid questions"
7666 . " about which license your project uses.";
7667 }
7669 # Windows Perl will hang if we try to delete a
7670 # file that doesn't exist.
7671 unlink ($fullfile) if -f $fullfile;
7672 if ($symlink_exists && ! $copy_missing)
7673 {
7674 if (! symlink ("$libdir/$file", $fullfile))
7675 {
7676 $suppress = 0;
7677 $trailer = "; error while making link: $!";
7678 }
7679 }
7680 elsif (system ('cp', "$libdir/$file", $fullfile))
7681 {
7682 $suppress = 0;
7683 $trailer = "\n error while copying";
7684 }
7685 set_dir_cache_file ($dir, $file);
7686 }
7688 if (! maybe_push_required_file (dirname ($fullfile),
7689 $file, $fullfile))
7690 {
7691 if (! $found_it && ! $automake_will_process_aux_dir)
7692 {
7693 # We have added the file but could not push it
7694 # into DIST_COMMON, probably because this is
7695 # an auxiliary file and we are not processing
7696 # the top level Makefile. Furthermore Automake
7697 # hasn't been asked to create the Makefile.in
7698 # that distributes the aux dir files.
7699 error ($where, 'Please make a full run of automake'
7700 . " so $fullfile gets distributed.");
7701 }
7702 }
7703 }
7704 else
7705 {
7706 $trailer = "\n `automake --add-missing' can install `$file'"
7707 if -f "$libdir/$file";
7708 }
7710 # If --force-missing was specified, and we have
7711 # actually found the file, then do nothing.
7712 next
7713 if $found_it && $force_missing;
7715 # If we couldn't install the file, but it is a target in
7716 # the Makefile, don't print anything. This allows files
7717 # like README, AUTHORS, or THANKS to be generated.
7718 next
7719 if !$suppress && rule $file;
7721 msg ($suppress ? 'note' : 'error', $where, "$message$trailer$trailer2");
7722 }
7723 }
7724 }
7725 }
7727 # &require_file ($WHERE, $MYSTRICT, @FILES)
7728 # -----------------------------------------
7729 sub require_file ($$@)
7730 {
7731 my ($where, $mystrict, @files) = @_;
7732 require_file_internal ($where, $mystrict, $relative_dir, @files);
7733 }
7735 # &require_file_with_macro ($COND, $MACRO, $MYSTRICT, @FILES)
7736 # -----------------------------------------------------------
7737 sub require_file_with_macro ($$$@)
7738 {
7739 my ($cond, $macro, $mystrict, @files) = @_;
7740 $macro = rvar ($macro) unless ref $macro;
7741 require_file ($macro->rdef ($cond)->location, $mystrict, @files);
7742 }
7744 # &require_libsource_with_macro ($COND, $MACRO, $MYSTRICT, @FILES)
7745 # ----------------------------------------------------------------
7746 # Require an AC_LIBSOURCEd file. If AC_CONFIG_LIBOBJ_DIR was called, it
7747 # must be in that directory. Otherwise expect it in the current directory.
7748 sub require_libsource_with_macro ($$$@)
7749 {
7750 my ($cond, $macro, $mystrict, @files) = @_;
7751 $macro = rvar ($macro) unless ref $macro;
7752 if ($config_libobj_dir)
7753 {
7754 require_file_internal ($macro->rdef ($cond)->location, $mystrict,
7755 $config_libobj_dir, @files);
7756 }
7757 else
7758 {
7759 require_file ($macro->rdef ($cond)->location, $mystrict, @files);
7760 }
7761 }
7763 # Queue to push require_conf_file requirements to.
7764 my $required_conf_file_queue;
7766 # &queue_required_conf_file ($QUEUE, $KEY, $DIR, $WHERE, $MYSTRICT, @FILES)
7767 # -------------------------------------------------------------------------
7768 sub queue_required_conf_file ($$$$@)
7769 {
7770 my ($queue, $key, $dir, $where, $mystrict, @files) = @_;
7771 my @serial_loc;
7772 if (ref $where)
7773 {
7774 @serial_loc = (QUEUE_LOCATION, $where->serialize ());
7775 }
7776 else
7777 {
7778 @serial_loc = (QUEUE_STRING, $where);
7779 }
7780 $queue->enqueue ($key, $dir, @serial_loc, $mystrict, 0 + @files, @files);
7781 }
7783 # &require_queued_conf_file ($QUEUE)
7784 # ----------------------------------
7785 sub require_queued_conf_file ($)
7786 {
7787 my ($queue) = @_;
7788 my $where;
7789 my $dir = $queue->dequeue ();
7790 my $loc_key = $queue->dequeue ();
7791 if ($loc_key eq QUEUE_LOCATION)
7792 {
7793 $where = Automake::Location::deserialize ($queue);
7794 }
7795 elsif ($loc_key eq QUEUE_STRING)
7796 {
7797 $where = $queue->dequeue ();
7798 }
7799 else
7800 {
7801 prog_error "unexpected key $loc_key";
7802 }
7803 my $mystrict = $queue->dequeue ();
7804 my $nfiles = $queue->dequeue ();
7805 my @files;
7806 push @files, $queue->dequeue ()
7807 foreach (1 .. $nfiles);
7809 # Dequeuing happens outside of per-makefile context, so we have to
7810 # set the variables used by require_file_internal and the functions
7811 # it calls. Gross!
7812 $relative_dir = $dir;
7813 require_file_internal ($where, $mystrict, $config_aux_dir, @files);
7814 }
7816 # &require_conf_file ($WHERE, $MYSTRICT, @FILES)
7817 # ----------------------------------------------
7818 # Looks in configuration path, as specified by AC_CONFIG_AUX_DIR;
7819 # worker threads may queue up the action to be serialized by the master.
7820 #
7821 # FIXME: this seriously relies on the semantics of require_file_internal
7822 # and maybe_push_required_file, in that we exploit the fact that only the
7823 # contents of the last handled output file may be impacted (which in turn
7824 # is dealt with by the master thread).
7825 sub require_conf_file ($$@)
7826 {
7827 my ($where, $mystrict, @files) = @_;
7828 if (defined $required_conf_file_queue)
7829 {
7830 queue_required_conf_file ($required_conf_file_queue, QUEUE_CONF_FILE,
7831 $relative_dir, $where, $mystrict, @files);
7832 }
7833 else
7834 {
7835 require_file_internal ($where, $mystrict, $config_aux_dir, @files);
7836 }
7837 }
7840 # &require_conf_file_with_macro ($COND, $MACRO, $MYSTRICT, @FILES)
7841 # ----------------------------------------------------------------
7842 sub require_conf_file_with_macro ($$$@)
7843 {
7844 my ($cond, $macro, $mystrict, @files) = @_;
7845 require_conf_file (rvar ($macro)->rdef ($cond)->location,
7846 $mystrict, @files);
7847 }
7849 ################################################################
7851 # &require_build_directory ($DIRECTORY)
7852 # ------------------------------------
7853 # Emit rules to create $DIRECTORY if needed, and return
7854 # the file that any target requiring this directory should be made
7855 # dependent upon.
7856 # We don't want to emit the rule twice, and want to reuse it
7857 # for directories with equivalent names (e.g., `foo/bar' and `./foo//bar').
7858 sub require_build_directory ($)
7859 {
7860 my $directory = shift;
7862 return $directory_map{$directory} if exists $directory_map{$directory};
7864 my $cdir = File::Spec->canonpath ($directory);
7866 if (exists $directory_map{$cdir})
7867 {
7868 my $stamp = $directory_map{$cdir};
7869 $directory_map{$directory} = $stamp;
7870 return $stamp;
7871 }
7873 my $dirstamp = "$cdir/\$(am__dirstamp)";
7875 $directory_map{$directory} = $dirstamp;
7876 $directory_map{$cdir} = $dirstamp;
7878 # Set a variable for the dirstamp basename.
7879 define_pretty_variable ('am__dirstamp', TRUE, INTERNAL,
7880 '$(am__leading_dot)dirstamp');
7882 # Directory must be removed by `make distclean'.
7883 $clean_files{$dirstamp} = DIST_CLEAN;
7885 $output_rules .= ("$dirstamp:\n"
7886 . "\t\@\$(MKDIR_P) $directory\n"
7887 . "\t\@: > $dirstamp\n");
7889 return $dirstamp;
7890 }
7892 # &require_build_directory_maybe ($FILE)
7893 # --------------------------------------
7894 # If $FILE lies in a subdirectory, emit a rule to create this
7895 # directory and return the file that $FILE should be made
7896 # dependent upon. Otherwise, just return the empty string.
7897 sub require_build_directory_maybe ($)
7898 {
7899 my $file = shift;
7900 my $directory = dirname ($file);
7902 if ($directory ne '.')
7903 {
7904 return require_build_directory ($directory);
7905 }
7906 else
7907 {
7908 return '';
7909 }
7910 }
7912 ################################################################
7914 # Push a list of files onto dist_common.
7915 sub push_dist_common
7916 {
7917 prog_error "push_dist_common run after handle_dist"
7918 if $handle_dist_run;
7919 Automake::Variable::define ('DIST_COMMON', VAR_AUTOMAKE, '+', TRUE, "@_",
7920 '', INTERNAL, VAR_PRETTY);
7921 }
7924 ################################################################
7926 # generate_makefile ($MAKEFILE_AM, $MAKEFILE_IN)
7927 # ----------------------------------------------
7928 # Generate a Makefile.in given the name of the corresponding Makefile and
7929 # the name of the file output by config.status.
7930 sub generate_makefile ($$)
7931 {
7932 my ($makefile_am, $makefile_in) = @_;
7934 # Reset all the Makefile.am related variables.
7935 initialize_per_input;
7937 # AUTOMAKE_OPTIONS can contains -W flags to disable or enable
7938 # warnings for this file. So hold any warning issued before
7939 # we have processed AUTOMAKE_OPTIONS.
7940 buffer_messages ('warning');
7942 # Name of input file ("Makefile.am") and output file
7943 # ("Makefile.in"). These have no directory components.
7944 $am_file_name = basename ($makefile_am);
7945 $in_file_name = basename ($makefile_in);
7947 # $OUTPUT is encoded. If it contains a ":" then the first element
7948 # is the real output file, and all remaining elements are input
7949 # files. We don't scan or otherwise deal with these input files,
7950 # other than to mark them as dependencies. See
7951 # &scan_autoconf_files for details.
7952 my ($makefile, @inputs) = split (/:/, $output_files{$makefile_in});
7954 $relative_dir = dirname ($makefile);
7955 $am_relative_dir = dirname ($makefile_am);
7956 $topsrcdir = backname ($relative_dir);
7958 read_main_am_file ($makefile_am);
7959 if (handle_options)
7960 {
7961 # Process buffered warnings.
7962 flush_messages;
7963 # Fatal error. Just return, so we can continue with next file.
7964 return;
7965 }
7966 # Process buffered warnings.
7967 flush_messages;
7969 # There are a few install-related variables that you should not define.
7970 foreach my $var ('PRE_INSTALL', 'POST_INSTALL', 'NORMAL_INSTALL')
7971 {
7972 my $v = var $var;
7973 if ($v)
7974 {
7975 my $def = $v->def (TRUE);
7976 prog_error "$var not defined in condition TRUE"
7977 unless $def;
7978 reject_var $var, "`$var' should not be defined"
7979 if $def->owner != VAR_AUTOMAKE;
7980 }
7981 }
7983 # Catch some obsolete variables.
7984 msg_var ('obsolete', 'INCLUDES',
7985 "`INCLUDES' is the old name for `AM_CPPFLAGS' (or `*_CPPFLAGS')")
7986 if var ('INCLUDES');
7988 # Must do this after reading .am file.
7989 define_variable ('subdir', $relative_dir, INTERNAL);
7991 # If DIST_SUBDIRS is defined, make sure SUBDIRS is, so that
7992 # recursive rules are enabled.
7993 define_pretty_variable ('SUBDIRS', TRUE, INTERNAL, '')
7994 if var 'DIST_SUBDIRS' && ! var 'SUBDIRS';
7996 # Check first, because we might modify some state.
7997 check_cygnus;
7998 check_gnu_standards;
7999 check_gnits_standards;
8001 handle_configure ($makefile_am, $makefile_in, $makefile, @inputs);
8002 handle_gettext;
8003 handle_libraries;
8004 handle_ltlibraries;
8005 handle_programs;
8006 handle_scripts;
8008 # These must be run after all the sources are scanned. They
8009 # use variables defined by &handle_libraries, &handle_ltlibraries,
8010 # or &handle_programs.
8011 handle_compile;
8012 handle_languages;
8013 handle_libtool;
8015 # Variables used by distdir.am and tags.am.
8016 define_pretty_variable ('SOURCES', TRUE, INTERNAL, @sources);
8017 if (! option 'no-dist')
8018 {
8019 define_pretty_variable ('DIST_SOURCES', TRUE, INTERNAL, @dist_sources);
8020 }
8022 handle_multilib;
8023 handle_texinfo;
8024 handle_emacs_lisp;
8025 handle_python;
8026 handle_java;
8027 handle_man_pages;
8028 handle_data;
8029 handle_headers;
8030 handle_subdirs;
8031 handle_tags;
8032 handle_minor_options;
8033 # Must come after handle_programs so that %known_programs is up-to-date.
8034 handle_tests;
8036 # This must come after most other rules.
8037 handle_dist;
8039 handle_footer;
8040 do_check_merge_target;
8041 handle_all ($makefile);
8043 # FIXME: Gross!
8044 if (var ('lib_LTLIBRARIES') && var ('bin_PROGRAMS'))
8045 {
8046 $output_rules .= "install-binPROGRAMS: install-libLTLIBRARIES\n\n";
8047 }
8048 if (var ('nobase_lib_LTLIBRARIES') && var ('bin_PROGRAMS'))
8049 {
8050 $output_rules .= "install-binPROGRAMS: install-nobase_libLTLIBRARIES\n\n";
8051 }
8053 handle_install;
8054 handle_clean ($makefile);
8055 handle_factored_dependencies;
8057 # Comes last, because all the above procedures may have
8058 # defined or overridden variables.
8059 $output_vars .= output_variables;
8061 check_typos;
8063 my ($out_file) = $output_directory . '/' . $makefile_in;
8065 if ($exit_code != 0)
8066 {
8067 verb "not writing $out_file because of earlier errors";
8068 return;
8069 }
8071 if (! -d ($output_directory . '/' . $am_relative_dir))
8072 {
8073 mkdir ($output_directory . '/' . $am_relative_dir, 0755);
8074 }
8076 # We make sure that `all:' is the first target.
8077 my $output =
8078 "$output_vars$output_all$output_header$output_rules$output_trailer";
8080 # Decide whether we must update the output file or not.
8081 # We have to update in the following situations.
8082 # * $force_generation is set.
8083 # * any of the output dependencies is younger than the output
8084 # * the contents of the output is different (this can happen
8085 # if the project has been populated with a file listed in
8086 # @common_files since the last run).
8087 # Output's dependencies are split in two sets:
8088 # * dependencies which are also configure dependencies
8089 # These do not change between each Makefile.am
8090 # * other dependencies, specific to the Makefile.am being processed
8091 # (such as the Makefile.am itself, or any Makefile fragment
8092 # it includes).
8093 my $timestamp = mtime $out_file;
8094 if (! $force_generation
8095 && $configure_deps_greatest_timestamp < $timestamp
8096 && $output_deps_greatest_timestamp < $timestamp
8097 && $output eq contents ($out_file))
8098 {
8099 verb "$out_file unchanged";
8100 # No need to update.
8101 return;
8102 }
8104 if (-e $out_file)
8105 {
8106 unlink ($out_file)
8107 or fatal "cannot remove $out_file: $!\n";
8108 }
8110 my $gm_file = new Automake::XFile "> $out_file";
8111 verb "creating $out_file";
8112 print $gm_file $output;
8113 }
8115 ################################################################
8120 ################################################################
8122 # Print usage information.
8123 sub usage ()
8124 {
8125 print "Usage: $0 [OPTION] ... [Makefile]...
8127 Generate Makefile.in for configure from Makefile.am.
8129 Operation modes:
8130 --help print this help, then exit
8131 --version print version number, then exit
8132 -v, --verbose verbosely list files processed
8133 --no-force only update Makefile.in's that are out of date
8134 -W, --warnings=CATEGORY report the warnings falling in CATEGORY
8136 Dependency tracking:
8137 -i, --ignore-deps disable dependency tracking code
8138 --include-deps enable dependency tracking code
8140 Verbosity of generated rules:
8141 --silent-rules enable silent build rules
8143 Flavors:
8144 --cygnus assume program is part of Cygnus-style tree
8145 --foreign set strictness to foreign
8146 --gnits set strictness to gnits
8147 --gnu set strictness to gnu
8149 Library files:
8150 -a, --add-missing add missing standard files to package
8151 --libdir=DIR directory storing library files
8152 -c, --copy with -a, copy missing files (default is symlink)
8153 -f, --force-missing force update of standard files
8155 ";
8156 Automake::ChannelDefs::usage;
8158 my ($last, @lcomm);
8159 $last = '';
8160 foreach my $iter (sort ((@common_files, @common_sometimes)))
8161 {
8162 push (@lcomm, $iter) unless $iter eq $last;
8163 $last = $iter;
8164 }
8166 my @four;
8167 print "\nFiles which are automatically distributed, if found:\n";
8168 format USAGE_FORMAT =
8169 @<<<<<<<<<<<<<<<< @<<<<<<<<<<<<<<<< @<<<<<<<<<<<<<<<< @<<<<<<<<<<<<<<<<
8170 $four[0], $four[1], $four[2], $four[3]
8171 .
8172 $~ = "USAGE_FORMAT";
8174 my $cols = 4;
8175 my $rows = int(@lcomm / $cols);
8176 my $rest = @lcomm % $cols;
8178 if ($rest)
8179 {
8180 $rows++;
8181 }
8182 else
8183 {
8184 $rest = $cols;
8185 }
8187 for (my $y = 0; $y < $rows; $y++)
8188 {
8189 @four = ("", "", "", "");
8190 for (my $x = 0; $x < $cols; $x++)
8191 {
8192 last if $y + 1 == $rows && $x == $rest;
8194 my $idx = (($x > $rest)
8195 ? ($rows * $rest + ($rows - 1) * ($x - $rest))
8196 : ($rows * $x));
8198 $idx += $y;
8199 $four[$x] = $lcomm[$idx];
8200 }
8201 write;
8202 }
8204 print "\nReport bugs to <bug-automake\@gnu.org>.\n";
8206 # --help always returns 0 per GNU standards.
8207 exit 0;
8208 }
8211 # &version ()
8212 # -----------
8213 # Print version information
8214 sub version ()
8215 {
8216 print <<EOF;
8217 automake (GNU $PACKAGE) $VERSION
8218 Copyright (C) 2009 Free Software Foundation, Inc.
8219 License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html>
8220 This is free software: you are free to change and redistribute it.
8221 There is NO WARRANTY, to the extent permitted by law.
8223 Written by Tom Tromey <tromey\@redhat.com>
8224 and Alexandre Duret-Lutz <adl\@gnu.org>.
8225 EOF
8226 # --version always returns 0 per GNU standards.
8227 exit 0;
8228 }
8230 ################################################################
8232 # Parse command line.
8233 sub parse_arguments ()
8234 {
8235 # Start off as gnu.
8236 set_strictness ('gnu');
8238 my $cli_where = new Automake::Location;
8239 my %cli_options =
8240 (
8241 'libdir=s' => \$libdir,
8242 'gnu' => sub { set_strictness ('gnu'); },
8243 'gnits' => sub { set_strictness ('gnits'); },
8244 'cygnus' => sub { set_global_option ('cygnus', $cli_where); },
8245 'foreign' => sub { set_strictness ('foreign'); },
8246 'include-deps' => sub { unset_global_option ('no-dependencies'); },
8247 'i|ignore-deps' => sub { set_global_option ('no-dependencies',
8248 $cli_where); },
8249 'no-force' => sub { $force_generation = 0; },
8250 'f|force-missing' => \$force_missing,
8251 'o|output-dir=s' => \$output_directory,
8252 'a|add-missing' => \$add_missing,
8253 'c|copy' => \$copy_missing,
8254 'silent-rules' => sub { set_global_option ('silent-rules',
8255 $cli_where); },
8256 'v|verbose' => sub { setup_channel 'verb', silent => 0; },
8257 'W|warnings=s' => \&parse_warnings,
8258 # These long options (--Werror and --Wno-error) for backward
8259 # compatibility. Use -Werror and -Wno-error today.
8260 'Werror' => sub { parse_warnings 'W', 'error'; },
8261 'Wno-error' => sub { parse_warnings 'W', 'no-error'; },
8262 );
8263 use Getopt::Long;
8264 Getopt::Long::config ("bundling", "pass_through");
8266 # See if --version or --help is used. We want to process these before
8267 # anything else because the GNU Coding Standards require us to
8268 # `exit 0' after processing these options, and we can't guarantee this
8269 # if we treat other options first. (Handling other options first
8270 # could produce error diagnostics, and in this condition it is
8271 # confusing if Automake does `exit 0'.)
8272 my %cli_options_1st_pass =
8273 (
8274 'version' => \&version,
8275 'help' => \&usage,
8276 # Recognize all other options (and their arguments) but do nothing.
8277 map { $_ => sub {} } (keys %cli_options)
8278 );
8279 my @ARGV_backup = @ARGV;
8280 Getopt::Long::GetOptions %cli_options_1st_pass
8281 or exit 1;
8282 @ARGV = @ARGV_backup;
8284 # Now *really* process the options. This time we know that --help
8285 # and --version are not present, but we specify them nonetheless so
8286 # that ambiguous abbreviation are diagnosed.
8287 Getopt::Long::GetOptions %cli_options, 'version' => sub {}, 'help' => sub {}
8288 or exit 1;
8290 if (defined $output_directory)
8291 {
8292 msg 'obsolete', "`--output-dir' is deprecated\n";
8293 }
8294 else
8295 {
8296 # In the next release we'll remove this entirely.
8297 $output_directory = '.';
8298 }
8300 return unless @ARGV;
8302 if ($ARGV[0] =~ /^-./)
8303 {
8304 my %argopts;
8305 for my $k (keys %cli_options)
8306 {
8307 if ($k =~ /(.*)=s$/)
8308 {
8309 map { $argopts{(length ($_) == 1)
8310 ? "-$_" : "--$_" } = 1; } (split (/\|/, $1));
8311 }
8312 }
8313 if ($ARGV[0] eq '--')
8314 {
8315 shift @ARGV;
8316 }
8317 elsif (exists $argopts{$ARGV[0]})
8318 {
8319 fatal ("option `$ARGV[0]' requires an argument\n"
8320 . "Try `$0 --help' for more information.");
8321 }
8322 else
8323 {
8324 fatal ("unrecognized option `$ARGV[0]'.\n"
8325 . "Try `$0 --help' for more information.");
8326 }
8327 }
8329 my $errspec = 0;
8330 foreach my $arg (@ARGV)
8331 {
8332 fatal ("empty argument\nTry `$0 --help' for more information.")
8333 if ($arg eq '');
8335 # Handle $local:$input syntax.
8336 my ($local, @rest) = split (/:/, $arg);
8337 @rest = ("$local.in",) unless @rest;
8338 my $input = locate_am @rest;
8339 if ($input)
8340 {
8341 push @input_files, $input;
8342 $output_files{$input} = join (':', ($local, @rest));
8343 }
8344 else
8345 {
8346 error "no Automake input file found for `$arg'";
8347 $errspec = 1;
8348 }
8349 }
8350 fatal "no input file found among supplied arguments"
8351 if $errspec && ! @input_files;
8352 }
8355 # handle_makefile ($MAKEFILE_IN)
8356 # ------------------------------
8357 # Deal with $MAKEFILE_IN.
8358 sub handle_makefile ($)
8359 {
8360 my ($file) = @_;
8361 ($am_file = $file) =~ s/\.in$//;
8362 if (! -f ($am_file . '.am'))
8363 {
8364 error "`$am_file.am' does not exist";
8365 }
8366 else
8367 {
8368 # Any warning setting now local to this Makefile.am.
8369 dup_channel_setup;
8371 generate_makefile ($am_file . '.am', $file);
8373 # Back out any warning setting.
8374 drop_channel_setup;
8375 }
8376 }
8378 # handle_makefiles_serial ()
8379 # --------------------------
8380 # Deal with all makefiles, without threads.
8381 sub handle_makefiles_serial ()
8382 {
8383 foreach my $file (@input_files)
8384 {
8385 handle_makefile ($file);
8386 }
8387 }
8389 # get_number_of_threads ()
8390 # ------------------------
8391 # Logic for deciding how many worker threads to use.
8392 sub get_number_of_threads
8393 {
8394 my $nthreads = $ENV{'AUTOMAKE_JOBS'} || 0;
8396 $nthreads = 0
8397 unless $nthreads =~ /^[0-9]+$/;
8399 # It doesn't make sense to use more threads than makefiles,
8400 my $max_threads = @input_files;
8402 # but a single worker thread is helpful for exposing bugs.
8403 if ($automake_will_process_aux_dir && $max_threads > 1)
8404 {
8405 $max_threads--;
8406 }
8407 if ($nthreads > $max_threads)
8408 {
8409 $nthreads = $max_threads;
8410 }
8411 return $nthreads;
8412 }
8414 # handle_makefiles_threaded ($NTHREADS)
8415 # -------------------------------------
8416 # Deal with all makefiles, using threads. The general strategy is to
8417 # spawn NTHREADS worker threads, dispatch makefiles to them, and let the
8418 # worker threads push back everything that needs serialization:
8419 # * warning and (normal) error messages, for stable stderr output
8420 # order and content (avoiding duplicates, for example),
8421 # * races when installing aux files (and respective messages),
8422 # * races when collecting aux files for distribution.
8423 #
8424 # The latter requires that the makefile that deals with the aux dir
8425 # files be handled last, done by the master thread.
8426 sub handle_makefiles_threaded ($)
8427 {
8428 my ($nthreads) = @_;
8430 my @queued_input_files = @input_files;
8431 my $last_input_file = undef;
8432 if ($automake_will_process_aux_dir)
8433 {
8434 $last_input_file = pop @queued_input_files;
8435 }
8437 # The file queue distributes all makefiles, the message queues
8438 # collect all serializations needed for respective files.
8439 my $file_queue = Thread::Queue->new;
8440 my %msg_queues;
8441 foreach my $file (@queued_input_files)
8442 {
8443 $msg_queues{$file} = Thread::Queue->new;
8444 }
8446 verb "spawning $nthreads worker threads";
8447 my @threads = (1 .. $nthreads);
8448 foreach my $t (@threads)
8449 {
8450 $t = threads->new (sub
8451 {
8452 while (my $file = $file_queue->dequeue)
8453 {
8454 verb "handling $file";
8455 my $queue = $msg_queues{$file};
8456 setup_channel_queue ($queue, QUEUE_MESSAGE);
8457 $required_conf_file_queue = $queue;
8458 handle_makefile ($file);
8459 $queue->enqueue (undef);
8460 setup_channel_queue (undef, undef);
8461 $required_conf_file_queue = undef;
8462 }
8463 return $exit_code;
8464 });
8465 }
8467 # Queue all normal makefiles.
8468 verb "queuing " . @queued_input_files . " input files";
8469 $file_queue->enqueue (@queued_input_files, (undef) x @threads);
8471 # Collect and process serializations.
8472 foreach my $file (@queued_input_files)
8473 {
8474 verb "dequeuing messages for " . $file;
8475 reset_local_duplicates ();
8476 my $queue = $msg_queues{$file};
8477 while (my $key = $queue->dequeue)
8478 {
8479 if ($key eq QUEUE_MESSAGE)
8480 {
8481 pop_channel_queue ($queue);
8482 }
8483 elsif ($key eq QUEUE_CONF_FILE)
8484 {
8485 require_queued_conf_file ($queue);
8486 }
8487 else
8488 {
8489 prog_error "unexpected key $key";
8490 }
8491 }
8492 }
8494 foreach my $t (@threads)
8495 {
8496 my @exit_thread = $t->join;
8497 $exit_code = $exit_thread[0]
8498 if ($exit_thread[0] > $exit_code);
8499 }
8501 # The master processes the last file.
8502 if ($automake_will_process_aux_dir)
8503 {
8504 verb "processing last input file";
8505 handle_makefile ($last_input_file);
8506 }
8507 }
8509 ################################################################
8511 # Parse the WARNINGS environment variable.
8512 parse_WARNINGS;
8514 # Parse command line.
8515 parse_arguments;
8517 $configure_ac = require_configure_ac;
8519 # Do configure.ac scan only once.
8520 scan_autoconf_files;
8522 if (! @input_files)
8523 {
8524 my $msg = '';
8525 $msg = "\nDid you forget AC_CONFIG_FILES([Makefile]) in $configure_ac?"
8526 if -f 'Makefile.am';
8527 fatal ("no `Makefile.am' found for any configure output$msg");
8528 }
8530 my $nthreads = get_number_of_threads ();
8532 if ($perl_threads && $nthreads >= 1)
8533 {
8534 handle_makefiles_threaded ($nthreads);
8535 }
8536 else
8537 {
8538 handle_makefiles_serial ();
8539 }
8541 exit $exit_code;
8544 ### Setup "GNU" style for perl-mode and cperl-mode.
8545 ## Local Variables:
8546 ## perl-indent-level: 2
8547 ## perl-continued-statement-offset: 2
8548 ## perl-continued-brace-offset: 0
8549 ## perl-brace-offset: 0
8550 ## perl-brace-imaginary-offset: 0
8551 ## perl-label-offset: -2
8552 ## cperl-indent-level: 2
8553 ## cperl-brace-offset: 0
8554 ## cperl-continued-brace-offset: 0
8555 ## cperl-label-offset: -2
8556 ## cperl-extra-newline-before-brace: t
8557 ## cperl-merge-trailing-else: nil
8558 ## cperl-continued-statement-offset: 2
8559 ## End: