| blob | 67ee0d213a6668278f6fe99a6a41653c5c912714 |
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 linker variable (LD).
92 'lder' => "\$",
93 # Content of the linker variable ($(CC)).
94 'ld' => "\$",
96 # Flag to specify the output file (-o).
97 'output_flag' => "\$",
98 '_finish' => "\$",
100 # This is a subroutine which is called whenever we finally
101 # determine the context in which a source file will be
102 # compiled.
103 '_target_hook' => "\$",
105 # If TRUE, nodist_ sources will be compiled using specific rules
106 # (i.e. not inference rules). The default is FALSE.
107 'nodist_specific' => "\$");
110 sub finish ($)
111 {
112 my ($self) = @_;
113 if (defined $self->_finish)
114 {
115 &{$self->_finish} ();
116 }
117 }
119 sub target_hook ($$$$%)
120 {
121 my ($self) = @_;
122 if (defined $self->_target_hook)
123 {
124 &{$self->_target_hook} (@_);
125 }
126 }
128 package Automake;
130 use strict;
131 use Automake::Config;
132 BEGIN
133 {
134 if ($perl_threads)
135 {
136 require threads;
137 import threads;
138 require Thread::Queue;
139 import Thread::Queue;
140 }
141 }
142 use Automake::General;
143 use Automake::XFile;
144 use Automake::Channels;
145 use Automake::ChannelDefs;
146 use Automake::Configure_ac;
147 use Automake::FileUtils;
148 use Automake::Location;
149 use Automake::Condition qw/TRUE FALSE/;
150 use Automake::DisjConditions;
151 use Automake::Options;
152 use Automake::Version;
153 use Automake::Variable;
154 use Automake::VarDef;
155 use Automake::Rule;
156 use Automake::RuleDef;
157 use Automake::Wrap 'makefile_wrap';
158 use File::Basename;
159 use File::Spec;
160 use Carp;
162 ## ----------- ##
163 ## Constants. ##
164 ## ----------- ##
166 # Some regular expressions. One reason to put them here is that it
167 # makes indentation work better in Emacs.
169 # Writing singled-quoted-$-terminated regexes is a pain because
170 # perl-mode thinks of $' as the ${'} variable (instead of a $ followed
171 # by a closing quote. Letting perl-mode think the quote is not closed
172 # leads to all sort of misindentations. On the other hand, defining
173 # regexes as double-quoted strings is far less readable. So usually
174 # we will write:
175 #
176 # $REGEX = '^regex_value' . "\$";
178 my $IGNORE_PATTERN = '^\s*##([^#\n].*)?\n';
179 my $WHITE_PATTERN = '^\s*' . "\$";
180 my $COMMENT_PATTERN = '^#';
181 my $TARGET_PATTERN='[$a-zA-Z0-9_.@%][-.a-zA-Z0-9_(){}/$+@%]*';
182 # A rule has three parts: a list of targets, a list of dependencies,
183 # and optionally actions.
184 my $RULE_PATTERN =
185 "^($TARGET_PATTERN(?:(?:\\\\\n|\\s)+$TARGET_PATTERN)*) *:([^=].*|)\$";
187 # Only recognize leading spaces, not leading tabs. If we recognize
188 # leading tabs here then we need to make the reader smarter, because
189 # otherwise it will think rules like `foo=bar; \' are errors.
190 my $ASSIGNMENT_PATTERN = '^ *([^ \t=:+]*)\s*([:+]?)=\s*(.*)' . "\$";
191 # This pattern recognizes a Gnits version id and sets $1 if the
192 # release is an alpha release. We also allow a suffix which can be
193 # used to extend the version number with a "fork" identifier.
194 my $GNITS_VERSION_PATTERN = '\d+\.\d+([a-z]|\.\d+)?(-[A-Za-z0-9]+)?';
196 my $IF_PATTERN = '^if\s+(!?)\s*([A-Za-z][A-Za-z0-9_]*)\s*(?:#.*)?' . "\$";
197 my $ELSE_PATTERN =
198 '^else(?:\s+(!?)\s*([A-Za-z][A-Za-z0-9_]*))?\s*(?:#.*)?' . "\$";
199 my $ENDIF_PATTERN =
200 '^endif(?:\s+(!?)\s*([A-Za-z][A-Za-z0-9_]*))?\s*(?:#.*)?' . "\$";
201 my $PATH_PATTERN = '(\w|[+/.-])+';
202 # This will pass through anything not of the prescribed form.
203 my $INCLUDE_PATTERN = ('^include\s+'
204 . '((\$\(top_srcdir\)/' . $PATH_PATTERN . ')'
205 . '|(\$\(srcdir\)/' . $PATH_PATTERN . ')'
206 . '|([^/\$]' . $PATH_PATTERN . '))\s*(#.*)?' . "\$");
208 # Match `-d' as a command-line argument in a string.
209 my $DASH_D_PATTERN = "(^|\\s)-d(\\s|\$)";
210 # Directories installed during 'install-exec' phase.
211 my $EXEC_DIR_PATTERN =
212 '^(?:bin|sbin|libexec|sysconf|localstate|lib|pkglib|.*exec.*)' . "\$";
214 # Values for AC_CANONICAL_*
215 use constant AC_CANONICAL_BUILD => 1;
216 use constant AC_CANONICAL_HOST => 2;
217 use constant AC_CANONICAL_TARGET => 3;
219 # Values indicating when something should be cleaned.
220 use constant MOSTLY_CLEAN => 0;
221 use constant CLEAN => 1;
222 use constant DIST_CLEAN => 2;
223 use constant MAINTAINER_CLEAN => 3;
225 # Libtool files.
226 my @libtool_files = qw(ltmain.sh config.guess config.sub);
227 # ltconfig appears here for compatibility with old versions of libtool.
228 my @libtool_sometimes = qw(ltconfig ltcf-c.sh ltcf-cxx.sh ltcf-gcj.sh);
230 # Commonly found files we look for and automatically include in
231 # DISTFILES.
232 my @common_files =
233 (qw(ABOUT-GNU ABOUT-NLS AUTHORS BACKLOG COPYING COPYING.DOC COPYING.LIB
234 COPYING.LESSER ChangeLog INSTALL NEWS README THANKS TODO
235 ansi2knr.1 ansi2knr.c compile config.guess config.rpath config.sub
236 depcomp elisp-comp install-sh libversion.in mdate-sh missing
237 mkinstalldirs py-compile texinfo.tex ylwrap),
238 @libtool_files, @libtool_sometimes);
240 # Commonly used files we auto-include, but only sometimes. This list
241 # is used for the --help output only.
242 my @common_sometimes =
243 qw(aclocal.m4 acconfig.h config.h.top config.h.bot configure
244 configure.ac configure.in stamp-vti);
246 # Standard directories from the GNU Coding Standards, and additional
247 # pkg* directories from Automake. Stored in a hash for fast member check.
248 my %standard_prefix =
249 map { $_ => 1 } (qw(bin data dataroot dvi exec html include info
250 lib libexec lisp localstate man man1 man2 man3
251 man4 man5 man6 man7 man8 man9 oldinclude pdf
252 pkgdatadir pkgincludedir pkglibdir pkglibexecdir
253 ps sbin sharedstate sysconf));
255 # Copyright on generated Makefile.ins.
256 my $gen_copyright = "\
257 # Copyright (C) 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002,
258 # 2003, 2004, 2005, 2006, 2007, 2008, 2009 Free Software Foundation,
259 # Inc.
260 # This Makefile.in is free software; the Free Software Foundation
261 # gives unlimited permission to copy and/or distribute it,
262 # with or without modifications, as long as this notice is preserved.
264 # This program is distributed in the hope that it will be useful,
265 # but WITHOUT ANY WARRANTY, to the extent permitted by law; without
266 # even the implied warranty of MERCHANTABILITY or FITNESS FOR A
267 # PARTICULAR PURPOSE.
268 ";
270 # These constants are returned by the lang_*_rewrite functions.
271 # LANG_SUBDIR means that the resulting object file should be in a
272 # subdir if the source file is. In this case the file name cannot
273 # have `..' components.
274 use constant LANG_IGNORE => 0;
275 use constant LANG_PROCESS => 1;
276 use constant LANG_SUBDIR => 2;
278 # These are used when keeping track of whether an object can be built
279 # by two different paths.
280 use constant COMPILE_LIBTOOL => 1;
281 use constant COMPILE_ORDINARY => 2;
283 # We can't always associate a location to a variable or a rule,
284 # when it's defined by Automake. We use INTERNAL in this case.
285 use constant INTERNAL => new Automake::Location;
287 # Serialization keys for message queues.
288 use constant QUEUE_MESSAGE => "msg";
289 use constant QUEUE_CONF_FILE => "conf file";
290 use constant QUEUE_LOCATION => "location";
291 use constant QUEUE_STRING => "string";
292 \f
294 ## ---------------------------------- ##
295 ## Variables related to the options. ##
296 ## ---------------------------------- ##
298 # TRUE if we should always generate Makefile.in.
299 my $force_generation = 1;
301 # From the Perl manual.
302 my $symlink_exists = (eval 'symlink ("", "");', $@ eq '');
304 # TRUE if missing standard files should be installed.
305 my $add_missing = 0;
307 # TRUE if we should copy missing files; otherwise symlink if possible.
308 my $copy_missing = 0;
310 # TRUE if we should always update files that we know about.
311 my $force_missing = 0;
314 ## ---------------------------------------- ##
315 ## Variables filled during files scanning. ##
316 ## ---------------------------------------- ##
318 # Name of the configure.ac file.
319 my $configure_ac;
321 # Files found by scanning configure.ac for LIBOBJS.
322 my %libsources = ();
324 # Names used in AC_CONFIG_HEADER call.
325 my @config_headers = ();
327 # Names used in AC_CONFIG_LINKS call.
328 my @config_links = ();
330 # Directory where output files go. Actually, output files are
331 # relative to this directory.
332 my $output_directory;
334 # List of Makefile.am's to process, and their corresponding outputs.
335 my @input_files = ();
336 my %output_files = ();
338 # Complete list of Makefile.am's that exist.
339 my @configure_input_files = ();
341 # List of files in AC_CONFIG_FILES/AC_OUTPUT without Makefile.am's,
342 # and their outputs.
343 my @other_input_files = ();
344 # Where each AC_CONFIG_FILES/AC_OUTPUT/AC_CONFIG_LINK/AC_CONFIG_HEADER appears.
345 # The keys are the files created by these macros.
346 my %ac_config_files_location = ();
347 # The condition under which AC_CONFIG_FOOS appears.
348 my %ac_config_files_condition = ();
350 # Directory to search for configure-required files. This
351 # will be computed by &locate_aux_dir and can be set using
352 # AC_CONFIG_AUX_DIR in configure.ac.
353 # $CONFIG_AUX_DIR is the `raw' directory, valid only in the source-tree.
354 my $config_aux_dir = '';
355 my $config_aux_dir_set_in_configure_ac = 0;
356 # $AM_CONFIG_AUX_DIR is prefixed with $(top_srcdir), so it can be used
357 # in Makefiles.
358 my $am_config_aux_dir = '';
360 # Directory to search for AC_LIBSOURCE files, as set by AC_CONFIG_LIBOBJ_DIR
361 # in configure.ac.
362 my $config_libobj_dir = '';
364 # Whether AM_GNU_GETTEXT has been seen in configure.ac.
365 my $seen_gettext = 0;
366 # Whether AM_GNU_GETTEXT([external]) is used.
367 my $seen_gettext_external = 0;
368 # Where AM_GNU_GETTEXT appears.
369 my $ac_gettext_location;
370 # Whether AM_GNU_GETTEXT_INTL_SUBDIR has been seen.
371 my $seen_gettext_intl = 0;
373 # Lists of tags supported by Libtool.
374 my %libtool_tags = ();
375 # 1 if Libtool uses LT_SUPPORTED_TAG. If it does, then it also
376 # uses AC_REQUIRE_AUX_FILE.
377 my $libtool_new_api = 0;
379 # Most important AC_CANONICAL_* macro seen so far.
380 my $seen_canonical = 0;
381 # Location of that macro.
382 my $canonical_location;
384 # Where AM_MAINTAINER_MODE appears.
385 my $seen_maint_mode;
387 # Actual version we've seen.
388 my $package_version = '';
390 # Where version is defined.
391 my $package_version_location;
393 # TRUE if we've seen AM_ENABLE_MULTILIB.
394 my $seen_multilib = 0;
396 # TRUE if we've seen AM_PROG_CC_C_O
397 my $seen_cc_c_o = 0;
399 # Location of AC_REQUIRE_AUX_FILE calls, indexed by their argument.
400 my %required_aux_file = ();
402 # Where AM_INIT_AUTOMAKE is called;
403 my $seen_init_automake = 0;
405 # TRUE if we've seen AM_AUTOMAKE_VERSION.
406 my $seen_automake_version = 0;
408 # Hash table of discovered configure substitutions. Keys are names,
409 # values are `FILE:LINE' strings which are used by error message
410 # generation.
411 my %configure_vars = ();
413 # Ignored configure substitutions (i.e., variables not to be output in
414 # Makefile.in)
415 my %ignored_configure_vars = ();
417 # Files included by $configure_ac.
418 my @configure_deps = ();
420 # Greatest timestamp of configure's dependencies.
421 my $configure_deps_greatest_timestamp = 0;
423 # Hash table of AM_CONDITIONAL variables seen in configure.
424 my %configure_cond = ();
426 # This maps extensions onto language names.
427 my %extension_map = ();
429 # List of the DIST_COMMON files we discovered while reading
430 # configure.in
431 my $configure_dist_common = '';
433 # This maps languages names onto objects.
434 my %languages = ();
435 # Maps each linker variable onto a language object.
436 my %link_languages = ();
438 # maps extensions to needed source flags.
439 my %sourceflags = ();
441 # List of targets we must always output.
442 # FIXME: Complete, and remove falsely required targets.
443 my %required_targets =
444 (
445 'all' => 1,
446 'dvi' => 1,
447 'pdf' => 1,
448 'ps' => 1,
449 'info' => 1,
450 'install-info' => 1,
451 'install' => 1,
452 'install-data' => 1,
453 'install-exec' => 1,
454 'uninstall' => 1,
456 # FIXME: Not required, temporary hacks.
457 # Well, actually they are sort of required: the -recursive
458 # targets will run them anyway...
459 'html-am' => 1,
460 'dvi-am' => 1,
461 'pdf-am' => 1,
462 'ps-am' => 1,
463 'info-am' => 1,
464 'install-data-am' => 1,
465 'install-exec-am' => 1,
466 'install-html-am' => 1,
467 'install-dvi-am' => 1,
468 'install-pdf-am' => 1,
469 'install-ps-am' => 1,
470 'install-info-am' => 1,
471 'installcheck-am' => 1,
472 'uninstall-am' => 1,
474 'install-man' => 1,
475 );
477 # Set to 1 if this run will create the Makefile.in that distributes
478 # the files in config_aux_dir.
479 my $automake_will_process_aux_dir = 0;
481 # The name of the Makefile currently being processed.
482 my $am_file = 'BUG';
483 \f
485 ################################################################
487 ## ------------------------------------------ ##
488 ## Variables reset by &initialize_per_input. ##
489 ## ------------------------------------------ ##
491 # Basename and relative dir of the input file.
492 my $am_file_name;
493 my $am_relative_dir;
495 # Same but wrt Makefile.in.
496 my $in_file_name;
497 my $relative_dir;
499 # Relative path to the top directory.
500 my $topsrcdir;
502 # Greatest timestamp of the output's dependencies (excluding
503 # configure's dependencies).
504 my $output_deps_greatest_timestamp;
506 # These variables are used when generating each Makefile.in.
507 # They hold the Makefile.in until it is ready to be printed.
508 my $output_vars;
509 my $output_all;
510 my $output_header;
511 my $output_rules;
512 my $output_trailer;
514 # This is the conditional stack, updated on if/else/endif, and
515 # used to build Condition objects.
516 my @cond_stack;
518 # This holds the set of included files.
519 my @include_stack;
521 # List of dependencies for the obvious targets.
522 my @all;
523 my @check;
524 my @check_tests;
526 # Keys in this hash table are files to delete. The associated
527 # value tells when this should happen (MOSTLY_CLEAN, DIST_CLEAN, etc.)
528 my %clean_files;
530 # Keys in this hash table are object files or other files in
531 # subdirectories which need to be removed. This only holds files
532 # which are created by compilations. The value in the hash indicates
533 # when the file should be removed.
534 my %compile_clean_files;
536 # Keys in this hash table are directories where we expect to build a
537 # libtool object. We use this information to decide what directories
538 # to delete.
539 my %libtool_clean_directories;
541 # Value of `$(SOURCES)', used by tags.am.
542 my @sources;
543 # Sources which go in the distribution.
544 my @dist_sources;
546 # This hash maps object file names onto their corresponding source
547 # file names. This is used to ensure that each object is created
548 # by a single source file.
549 my %object_map;
551 # This hash maps object file names onto an integer value representing
552 # whether this object has been built via ordinary compilation or
553 # libtool compilation (the COMPILE_* constants).
554 my %object_compilation_map;
557 # This keeps track of the directories for which we've already
558 # created dirstamp code. Keys are directories, values are stamp files.
559 # Several keys can share the same stamp files if they are equivalent
560 # (as are `.//foo' and `foo').
561 my %directory_map;
563 # All .P files.
564 my %dep_files;
566 # This is a list of all targets to run during "make dist".
567 my @dist_targets;
569 # Keep track of all programs declared in this Makefile, without
570 # $(EXEEXT). @substitutions@ are not listed.
571 my %known_programs;
573 # Keys in this hash are the basenames of files which must depend on
574 # ansi2knr. Values are either the empty string, or the directory in
575 # which the ANSI source file appears; the directory must have a
576 # trailing `/'.
577 my %de_ansi_files;
579 # This keeps track of which extensions we've seen (that we care
580 # about).
581 my %extension_seen;
583 # This is random scratch space for the language finish functions.
584 # Don't randomly overwrite it; examine other uses of keys first.
585 my %language_scratch;
587 # We keep track of which objects need special (per-executable)
588 # handling on a per-language basis.
589 my %lang_specific_files;
591 # This is set when `handle_dist' has finished. Once this happens,
592 # we should no longer push on dist_common.
593 my $handle_dist_run;
595 # Used to store a set of linkers needed to generate the sources currently
596 # under consideration.
597 my %linkers_used;
599 # True if we need `LINK' defined. This is a hack.
600 my $need_link;
602 # Was get_object_extension run?
603 # FIXME: This is a hack. a better switch should be found.
604 my $get_object_extension_was_run;
606 # Record each file processed by make_paragraphs.
607 my %transformed_files;
608 \f
610 ################################################################
612 ## ---------------------------------------------- ##
613 ## Variables not reset by &initialize_per_input. ##
614 ## ---------------------------------------------- ##
616 # Cache each file processed by make_paragraphs.
617 # (This is different from %transformed_files because
618 # %transformed_files is reset for each file while %am_file_cache
619 # it global to the run.)
620 my %am_file_cache;
622 ################################################################
624 # var_SUFFIXES_trigger ($TYPE, $VALUE)
625 # ------------------------------------
626 # This is called by Automake::Variable::define() when SUFFIXES
627 # is defined ($TYPE eq '') or appended ($TYPE eq '+').
628 # The work here needs to be performed as a side-effect of the
629 # macro_define() call because SUFFIXES definitions impact
630 # on $KNOWN_EXTENSIONS_PATTERN which is used used when parsing
631 # the input am file.
632 sub var_SUFFIXES_trigger ($$)
633 {
634 my ($type, $value) = @_;
635 accept_extensions (split (' ', $value));
636 }
637 Automake::Variable::hook ('SUFFIXES', \&var_SUFFIXES_trigger);
639 ################################################################
641 ## --------------------------------- ##
642 ## Forward subroutine declarations. ##
643 ## --------------------------------- ##
644 sub register_language (%);
645 sub file_contents_internal ($$$%);
646 sub define_files_variable ($\@$$);
649 # &initialize_per_input ()
650 # ------------------------
651 # (Re)-Initialize per-Makefile.am variables.
652 sub initialize_per_input ()
653 {
654 reset_local_duplicates ();
656 $am_file_name = undef;
657 $am_relative_dir = undef;
659 $in_file_name = undef;
660 $relative_dir = undef;
661 $topsrcdir = undef;
663 $output_deps_greatest_timestamp = 0;
665 $output_vars = '';
666 $output_all = '';
667 $output_header = '';
668 $output_rules = '';
669 $output_trailer = '';
671 Automake::Options::reset;
672 Automake::Variable::reset;
673 Automake::Rule::reset;
675 @cond_stack = ();
677 @include_stack = ();
679 @all = ();
680 @check = ();
681 @check_tests = ();
683 %clean_files = ();
684 %compile_clean_files = ();
686 # We always include `.'. This isn't strictly correct.
687 %libtool_clean_directories = ('.' => 1);
689 @sources = ();
690 @dist_sources = ();
692 %object_map = ();
693 %object_compilation_map = ();
695 %directory_map = ();
697 %dep_files = ();
699 @dist_targets = ();
701 %known_programs = ();
703 %de_ansi_files = ();
705 %extension_seen = ();
707 %language_scratch = ();
709 %lang_specific_files = ();
711 $handle_dist_run = 0;
713 $need_link = 0;
715 $get_object_extension_was_run = 0;
717 %transformed_files = ();
718 }
721 ################################################################
723 # Initialize our list of languages that are internally supported.
725 # C.
726 register_language ('name' => 'c',
727 'Name' => 'C',
728 'config_vars' => ['CC'],
729 'ansi' => 1,
730 'autodep' => '',
731 'flags' => ['CFLAGS', 'CPPFLAGS'],
732 'compiler' => 'COMPILE',
733 'compile' => '$(CC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS) $(CPPFLAGS) $(AM_CFLAGS) $(CFLAGS)',
734 'lder' => 'CCLD',
735 'ld' => '$(CC)',
736 'linker' => 'LINK',
737 'link' => '$(CCLD) $(AM_CFLAGS) $(CFLAGS) $(AM_LDFLAGS) $(LDFLAGS) -o $@',
738 'compile_flag' => '-c',
739 'libtool_tag' => 'CC',
740 'extensions' => ['.c'],
741 '_finish' => \&lang_c_finish);
743 # C++.
744 register_language ('name' => 'cxx',
745 'Name' => 'C++',
746 'config_vars' => ['CXX'],
747 'linker' => 'CXXLINK',
748 'link' => '$(CXXLD) $(AM_CXXFLAGS) $(CXXFLAGS) $(AM_LDFLAGS) $(LDFLAGS) -o $@',
749 'autodep' => 'CXX',
750 'flags' => ['CXXFLAGS', 'CPPFLAGS'],
751 'compile' => '$(CXX) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS) $(CPPFLAGS) $(AM_CXXFLAGS) $(CXXFLAGS)',
752 'compiler' => 'CXXCOMPILE',
753 'compile_flag' => '-c',
754 'output_flag' => '-o',
755 'libtool_tag' => 'CXX',
756 'lder' => 'CXXLD',
757 'ld' => '$(CXX)',
758 'pure' => 1,
759 'extensions' => ['.c++', '.cc', '.cpp', '.cxx', '.C']);
761 # Objective C.
762 register_language ('name' => 'objc',
763 'Name' => 'Objective C',
764 'config_vars' => ['OBJC'],
765 'linker' => 'OBJCLINK',
766 'link' => '$(OBJCLD) $(AM_OBJCFLAGS) $(OBJCFLAGS) $(AM_LDFLAGS) $(LDFLAGS) -o $@',
767 'autodep' => 'OBJC',
768 'flags' => ['OBJCFLAGS', 'CPPFLAGS'],
769 'compile' => '$(OBJC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS) $(CPPFLAGS) $(AM_OBJCFLAGS) $(OBJCFLAGS)',
770 'compiler' => 'OBJCCOMPILE',
771 'compile_flag' => '-c',
772 'output_flag' => '-o',
773 'lder' => 'OBJCLD',
774 'ld' => '$(OBJC)',
775 'pure' => 1,
776 'extensions' => ['.m']);
778 # Unified Parallel C.
779 register_language ('name' => 'upc',
780 'Name' => 'Unified Parallel C',
781 'config_vars' => ['UPC'],
782 'linker' => 'UPCLINK',
783 'link' => '$(UPCLD) $(AM_UPCFLAGS) $(UPCFLAGS) $(AM_LDFLAGS) $(LDFLAGS) -o $@',
784 'autodep' => 'UPC',
785 'flags' => ['UPCFLAGS', 'CPPFLAGS'],
786 'compile' => '$(UPC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS) $(CPPFLAGS) $(AM_UPCFLAGS) $(UPCFLAGS)',
787 'compiler' => 'UPCCOMPILE',
788 'compile_flag' => '-c',
789 'output_flag' => '-o',
790 'lder' => 'UPCLD',
791 'ld' => '$(UPC)',
792 'pure' => 1,
793 'extensions' => ['.upc']);
795 # Headers.
796 register_language ('name' => 'header',
797 'Name' => 'Header',
798 'extensions' => ['.h', '.H', '.hxx', '.h++', '.hh',
799 '.hpp', '.inc'],
800 # No output.
801 'output_extensions' => sub { return () },
802 # Nothing to do.
803 '_finish' => sub { });
805 # Yacc (C & C++).
806 register_language ('name' => 'yacc',
807 'Name' => 'Yacc',
808 'config_vars' => ['YACC'],
809 'flags' => ['YFLAGS'],
810 'compile' => '$(YACC) $(YFLAGS) $(AM_YFLAGS)',
811 'compiler' => 'YACCCOMPILE',
812 'extensions' => ['.y'],
813 'output_extensions' => sub { (my $ext = $_[0]) =~ tr/y/c/;
814 return ($ext,) },
815 'rule_file' => 'yacc',
816 '_finish' => \&lang_yacc_finish,
817 '_target_hook' => \&lang_yacc_target_hook,
818 'nodist_specific' => 1);
819 register_language ('name' => 'yaccxx',
820 'Name' => 'Yacc (C++)',
821 'config_vars' => ['YACC'],
822 'rule_file' => 'yacc',
823 'flags' => ['YFLAGS'],
824 'compiler' => 'YACCCOMPILE',
825 'compile' => '$(YACC) $(YFLAGS) $(AM_YFLAGS)',
826 'extensions' => ['.y++', '.yy', '.yxx', '.ypp'],
827 'output_extensions' => sub { (my $ext = $_[0]) =~ tr/y/c/;
828 return ($ext,) },
829 '_finish' => \&lang_yacc_finish,
830 '_target_hook' => \&lang_yacc_target_hook,
831 'nodist_specific' => 1);
833 # Lex (C & C++).
834 register_language ('name' => 'lex',
835 'Name' => 'Lex',
836 'config_vars' => ['LEX'],
837 'rule_file' => 'lex',
838 'flags' => ['LFLAGS'],
839 'compile' => '$(LEX) $(LFLAGS) $(AM_LFLAGS)',
840 'compiler' => 'LEXCOMPILE',
841 'extensions' => ['.l'],
842 'output_extensions' => sub { (my $ext = $_[0]) =~ tr/l/c/;
843 return ($ext,) },
844 '_finish' => \&lang_lex_finish,
845 '_target_hook' => \&lang_lex_target_hook,
846 'nodist_specific' => 1);
847 register_language ('name' => 'lexxx',
848 'Name' => 'Lex (C++)',
849 'config_vars' => ['LEX'],
850 'rule_file' => 'lex',
851 'flags' => ['LFLAGS'],
852 'compile' => '$(LEX) $(LFLAGS) $(AM_LFLAGS)',
853 'compiler' => 'LEXCOMPILE',
854 'extensions' => ['.l++', '.ll', '.lxx', '.lpp'],
855 'output_extensions' => sub { (my $ext = $_[0]) =~ tr/l/c/;
856 return ($ext,) },
857 '_finish' => \&lang_lex_finish,
858 '_target_hook' => \&lang_lex_target_hook,
859 'nodist_specific' => 1);
861 # Assembler.
862 register_language ('name' => 'asm',
863 'Name' => 'Assembler',
864 'config_vars' => ['CCAS', 'CCASFLAGS'],
866 'flags' => ['CCASFLAGS'],
867 # Users can set AM_CCASFLAGS to include DEFS, INCLUDES,
868 # or anything else required. They can also set CCAS.
869 # Or simply use Preprocessed Assembler.
870 'compile' => '$(CCAS) $(AM_CCASFLAGS) $(CCASFLAGS)',
871 'compiler' => 'CCASCOMPILE',
872 'compile_flag' => '-c',
873 'output_flag' => '-o',
874 'extensions' => ['.s'],
876 # With assembly we still use the C linker.
877 '_finish' => \&lang_c_finish);
879 # Preprocessed Assembler.
880 register_language ('name' => 'cppasm',
881 'Name' => 'Preprocessed Assembler',
882 'config_vars' => ['CCAS', 'CCASFLAGS'],
884 'autodep' => 'CCAS',
885 'flags' => ['CCASFLAGS', 'CPPFLAGS'],
886 'compile' => '$(CCAS) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS) $(CPPFLAGS) $(AM_CCASFLAGS) $(CCASFLAGS)',
887 'compiler' => 'CPPASCOMPILE',
888 'compile_flag' => '-c',
889 'output_flag' => '-o',
890 'extensions' => ['.S', '.sx'],
892 # With assembly we still use the C linker.
893 '_finish' => \&lang_c_finish);
895 # Fortran 77
896 register_language ('name' => 'f77',
897 'Name' => 'Fortran 77',
898 'config_vars' => ['F77'],
899 'linker' => 'F77LINK',
900 'link' => '$(F77LD) $(AM_FFLAGS) $(FFLAGS) $(AM_LDFLAGS) $(LDFLAGS) -o $@',
901 'flags' => ['FFLAGS'],
902 'compile' => '$(F77) $(AM_FFLAGS) $(FFLAGS)',
903 'compiler' => 'F77COMPILE',
904 'compile_flag' => '-c',
905 'output_flag' => '-o',
906 'libtool_tag' => 'F77',
907 'lder' => 'F77LD',
908 'ld' => '$(F77)',
909 'pure' => 1,
910 'extensions' => ['.f', '.for']);
912 # Fortran
913 register_language ('name' => 'fc',
914 'Name' => 'Fortran',
915 'config_vars' => ['FC'],
916 'linker' => 'FCLINK',
917 'link' => '$(FCLD) $(AM_FCFLAGS) $(FCFLAGS) $(AM_LDFLAGS) $(LDFLAGS) -o $@',
918 'flags' => ['FCFLAGS'],
919 'compile' => '$(FC) $(AM_FCFLAGS) $(FCFLAGS)',
920 'compiler' => 'FCCOMPILE',
921 'compile_flag' => '-c',
922 'output_flag' => '-o',
923 'lder' => 'FCLD',
924 'ld' => '$(FC)',
925 'pure' => 1,
926 'extensions' => ['.f90', '.f95', '.f03', '.f08']);
928 # Preprocessed Fortran
929 register_language ('name' => 'ppfc',
930 'Name' => 'Preprocessed Fortran',
931 'config_vars' => ['FC'],
932 'linker' => 'FCLINK',
933 'link' => '$(FCLD) $(AM_FCFLAGS) $(FCFLAGS) $(AM_LDFLAGS) $(LDFLAGS) -o $@',
934 'lder' => 'FCLD',
935 'ld' => '$(FC)',
936 'flags' => ['FCFLAGS', 'CPPFLAGS'],
937 'compiler' => 'PPFCCOMPILE',
938 'compile' => '$(FC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS) $(CPPFLAGS) $(AM_FCFLAGS) $(FCFLAGS)',
939 'compile_flag' => '-c',
940 'output_flag' => '-o',
941 'libtool_tag' => 'FC',
942 'pure' => 1,
943 'extensions' => ['.F90','.F95', '.F03', '.F08']);
945 # Preprocessed Fortran 77
946 #
947 # The current support for preprocessing Fortran 77 just involves
948 # passing `$(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS)
949 # $(CPPFLAGS)' as additional flags to the Fortran 77 compiler, since
950 # this is how GNU Make does it; see the `GNU Make Manual, Edition 0.51
951 # for `make' Version 3.76 Beta' (specifically, from info file
952 # `(make)Catalogue of Rules').
953 #
954 # A better approach would be to write an Autoconf test
955 # (i.e. AC_PROG_FPP) for a Fortran 77 preprocessor, because not all
956 # Fortran 77 compilers know how to do preprocessing. The Autoconf
957 # macro AC_PROG_FPP should test the Fortran 77 compiler first for
958 # preprocessing capabilities, and then fall back on cpp (if cpp were
959 # available).
960 register_language ('name' => 'ppf77',
961 'Name' => 'Preprocessed Fortran 77',
962 'config_vars' => ['F77'],
963 'linker' => 'F77LINK',
964 'link' => '$(F77LD) $(AM_FFLAGS) $(FFLAGS) $(AM_LDFLAGS) $(LDFLAGS) -o $@',
965 'lder' => 'F77LD',
966 'ld' => '$(F77)',
967 'flags' => ['FFLAGS', 'CPPFLAGS'],
968 'compiler' => 'PPF77COMPILE',
969 'compile' => '$(F77) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS) $(CPPFLAGS) $(AM_FFLAGS) $(FFLAGS)',
970 'compile_flag' => '-c',
971 'output_flag' => '-o',
972 'libtool_tag' => 'F77',
973 'pure' => 1,
974 'extensions' => ['.F']);
976 # Ratfor.
977 register_language ('name' => 'ratfor',
978 'Name' => 'Ratfor',
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' => ['RFLAGS', 'FFLAGS'],
985 # FIXME also FFLAGS.
986 'compile' => '$(F77) $(AM_FFLAGS) $(FFLAGS) $(AM_RFLAGS) $(RFLAGS)',
987 'compiler' => 'RCOMPILE',
988 'compile_flag' => '-c',
989 'output_flag' => '-o',
990 'libtool_tag' => 'F77',
991 'pure' => 1,
992 'extensions' => ['.r']);
994 # Java via gcj.
995 register_language ('name' => 'java',
996 'Name' => 'Java',
997 'config_vars' => ['GCJ'],
998 'linker' => 'GCJLINK',
999 'link' => '$(GCJLD) $(AM_GCJFLAGS) $(GCJFLAGS) $(AM_LDFLAGS) $(LDFLAGS) -o $@',
1000 'autodep' => 'GCJ',
1001 'flags' => ['GCJFLAGS'],
1002 'compile' => '$(GCJ) $(AM_GCJFLAGS) $(GCJFLAGS)',
1003 'compiler' => 'GCJCOMPILE',
1004 'compile_flag' => '-c',
1005 'output_flag' => '-o',
1006 'libtool_tag' => 'GCJ',
1007 'lder' => 'GCJLD',
1008 'ld' => '$(GCJ)',
1009 'pure' => 1,
1010 'extensions' => ['.java', '.class', '.zip', '.jar']);
1012 ################################################################
1014 # Error reporting functions.
1016 # err_am ($MESSAGE, [%OPTIONS])
1017 # -----------------------------
1018 # Uncategorized errors about the current Makefile.am.
1019 sub err_am ($;%)
1020 {
1021 msg_am ('error', @_);
1022 }
1024 # err_ac ($MESSAGE, [%OPTIONS])
1025 # -----------------------------
1026 # Uncategorized errors about configure.ac.
1027 sub err_ac ($;%)
1028 {
1029 msg_ac ('error', @_);
1030 }
1032 # msg_am ($CHANNEL, $MESSAGE, [%OPTIONS])
1033 # ---------------------------------------
1034 # Messages about about the current Makefile.am.
1035 sub msg_am ($$;%)
1036 {
1037 my ($channel, $msg, %opts) = @_;
1038 msg $channel, "${am_file}.am", $msg, %opts;
1039 }
1041 # msg_ac ($CHANNEL, $MESSAGE, [%OPTIONS])
1042 # ---------------------------------------
1043 # Messages about about configure.ac.
1044 sub msg_ac ($$;%)
1045 {
1046 my ($channel, $msg, %opts) = @_;
1047 msg $channel, $configure_ac, $msg, %opts;
1048 }
1050 ################################################################
1052 # subst ($TEXT)
1053 # -------------
1054 # Return a configure-style substitution using the indicated text.
1055 # We do this to avoid having the substitutions directly in automake.in;
1056 # when we do that they are sometimes removed and this causes confusion
1057 # and bugs.
1058 sub subst ($)
1059 {
1060 my ($text) = @_;
1061 return '@' . $text . '@';
1062 }
1064 ################################################################
1067 # $BACKPATH
1068 # &backname ($REL-DIR)
1069 # --------------------
1070 # If I `cd $REL-DIR', then to come back, I should `cd $BACKPATH'.
1071 # For instance `src/foo' => `../..'.
1072 # Works with non strictly increasing paths, i.e., `src/../lib' => `..'.
1073 sub backname ($)
1074 {
1075 my ($file) = @_;
1076 my @res;
1077 foreach (split (/\//, $file))
1078 {
1079 next if $_ eq '.' || $_ eq '';
1080 if ($_ eq '..')
1081 {
1082 pop @res
1083 or prog_error ("trying to reverse path `$file' pointing outside tree");
1084 }
1085 else
1086 {
1087 push (@res, '..');
1088 }
1089 }
1090 return join ('/', @res) || '.';
1091 }
1093 ################################################################
1096 # Handle AUTOMAKE_OPTIONS variable. Return 1 on error, 0 otherwise.
1097 sub handle_options
1098 {
1099 my $var = var ('AUTOMAKE_OPTIONS');
1100 if ($var)
1101 {
1102 if ($var->has_conditional_contents)
1103 {
1104 msg_var ('unsupported', $var,
1105 "`AUTOMAKE_OPTIONS' cannot have conditional contents");
1106 }
1107 foreach my $locvals ($var->value_as_list_recursive (cond_filter => TRUE,
1108 location => 1))
1109 {
1110 my ($loc, $value) = @$locvals;
1111 return 1 if (process_option_list ($loc, $value))
1112 }
1113 }
1115 if ($strictness == GNITS)
1116 {
1117 set_option ('readme-alpha', INTERNAL);
1118 set_option ('std-options', INTERNAL);
1119 set_option ('check-news', INTERNAL);
1120 }
1122 return 0;
1123 }
1125 # shadow_unconditionally ($varname, $where)
1126 # -----------------------------------------
1127 # Return a $(variable) that contains all possible values
1128 # $varname can take.
1129 # If the VAR wasn't defined conditionally, return $(VAR).
1130 # Otherwise we create a am__VAR_DIST variable which contains
1131 # all possible values, and return $(am__VAR_DIST).
1132 sub shadow_unconditionally ($$)
1133 {
1134 my ($varname, $where) = @_;
1135 my $var = var $varname;
1136 if ($var->has_conditional_contents)
1137 {
1138 $varname = "am__${varname}_DIST";
1139 my @files = uniq ($var->value_as_list_recursive);
1140 define_pretty_variable ($varname, TRUE, $where, @files);
1141 }
1142 return "\$($varname)"
1143 }
1145 # get_object_extension ($EXTENSION)
1146 # ---------------------------------
1147 # Prefix $EXTENSION with $U if ansi2knr is in use.
1148 sub get_object_extension ($)
1149 {
1150 my ($extension) = @_;
1152 # Check for automatic de-ANSI-fication.
1153 $extension = '$U' . $extension
1154 if option 'ansi2knr';
1156 $get_object_extension_was_run = 1;
1158 return $extension;
1159 }
1161 # check_user_variables (@LIST)
1162 # ----------------------------
1163 # Make sure each variable VAR in @LIST does not exist, suggest using AM_VAR
1164 # otherwise.
1165 sub check_user_variables (@)
1166 {
1167 my @dont_override = @_;
1168 foreach my $flag (@dont_override)
1169 {
1170 my $var = var $flag;
1171 if ($var)
1172 {
1173 for my $cond ($var->conditions->conds)
1174 {
1175 if ($var->rdef ($cond)->owner == VAR_MAKEFILE)
1176 {
1177 msg_cond_var ('gnu', $cond, $flag,
1178 "`$flag' is a user variable, "
1179 . "you should not override it;\n"
1180 . "use `AM_$flag' instead.");
1181 }
1182 }
1183 }
1184 }
1185 }
1187 # Call finish function for each language that was used.
1188 sub handle_languages
1189 {
1190 if (! option 'no-dependencies')
1191 {
1192 # Include auto-dep code. Don't include it if DEP_FILES would
1193 # be empty.
1194 if (&saw_sources_p (0) && keys %dep_files)
1195 {
1196 # Set location of depcomp.
1197 &define_variable ('depcomp',
1198 "\$(SHELL) $am_config_aux_dir/depcomp",
1199 INTERNAL);
1200 &define_variable ('am__depfiles_maybe', 'depfiles', INTERNAL);
1202 require_conf_file ("$am_file.am", FOREIGN, 'depcomp');
1204 my @deplist = sort keys %dep_files;
1205 # Generate each `include' individually. Irix 6 make will
1206 # not properly include several files resulting from a
1207 # variable expansion; generating many separate includes
1208 # seems safest.
1209 $output_rules .= "\n";
1210 foreach my $iter (@deplist)
1211 {
1212 $output_rules .= (subst ('AMDEP_TRUE')
1213 . subst ('am__include')
1214 . ' '
1215 . subst ('am__quote')
1216 . $iter
1217 . subst ('am__quote')
1218 . "\n");
1219 }
1221 # Compute the set of directories to remove in distclean-depend.
1222 my @depdirs = uniq (map { dirname ($_) } @deplist);
1223 $output_rules .= &file_contents ('depend',
1224 new Automake::Location,
1225 DEPDIRS => "@depdirs");
1226 }
1227 }
1228 else
1229 {
1230 &define_variable ('depcomp', '', INTERNAL);
1231 &define_variable ('am__depfiles_maybe', '', INTERNAL);
1232 }
1234 my %done;
1236 # Is the c linker needed?
1237 my $needs_c = 0;
1238 foreach my $ext (sort keys %extension_seen)
1239 {
1240 next unless $extension_map{$ext};
1242 my $lang = $languages{$extension_map{$ext}};
1244 my $rule_file = $lang->rule_file || 'depend2';
1246 # Get information on $LANG.
1247 my $pfx = $lang->autodep;
1248 my $fpfx = ($pfx eq '') ? 'CC' : $pfx;
1250 my ($AMDEP, $FASTDEP) =
1251 (option 'no-dependencies' || $lang->autodep eq 'no')
1252 ? ('FALSE', 'FALSE') : ('AMDEP', "am__fastdep$fpfx");
1254 my %transform = ('EXT' => $ext,
1255 'PFX' => $pfx,
1256 'FPFX' => $fpfx,
1257 'AMDEP' => $AMDEP,
1258 'FASTDEP' => $FASTDEP,
1259 '-c' => $lang->compile_flag || '',
1260 # These are not used, but they need to be defined
1261 # so &transform do not complain.
1262 SUBDIROBJ => 0,
1263 'DERIVED-EXT' => 'BUG',
1264 DIST_SOURCE => 1,
1265 );
1267 # Generate the appropriate rules for this extension.
1268 if (((! option 'no-dependencies') && $lang->autodep ne 'no')
1269 || defined $lang->compile)
1270 {
1271 # Some C compilers don't support -c -o. Use it only if really
1272 # needed.
1273 my $output_flag = $lang->output_flag || '';
1274 $output_flag = '-o'
1275 if (! $output_flag
1276 && $lang->name eq 'c'
1277 && option 'subdir-objects');
1279 # Compute a possible derived extension.
1280 # This is not used by depend2.am.
1281 my $der_ext = (&{$lang->output_extensions} ($ext))[0];
1283 # When we output an inference rule like `.c.o:' we
1284 # have two cases to consider: either subdir-objects
1285 # is used, or it is not.
1286 #
1287 # In the latter case the rule is used to build objects
1288 # in the current directory, and dependencies always
1289 # go into `./$(DEPDIR)/'. We can hard-code this value.
1290 #
1291 # In the former case the rule can be used to build
1292 # objects in sub-directories too. Dependencies should
1293 # go into the appropriate sub-directories, e.g.,
1294 # `sub/$(DEPDIR)/'. The value of this directory
1295 # needs to be computed on-the-fly.
1296 #
1297 # DEPBASE holds the name of this directory, plus the
1298 # basename part of the object file (extensions Po, TPo,
1299 # Plo, TPlo will be added later as appropriate). It is
1300 # either hardcoded, or a shell variable (`$depbase') that
1301 # will be computed by the rule.
1302 my $depbase =
1303 option ('subdir-objects') ? '$$depbase' : '$(DEPDIR)/$*';
1304 $output_rules .=
1305 file_contents ($rule_file,
1306 new Automake::Location,
1307 %transform,
1308 GENERIC => 1,
1310 'DERIVED-EXT' => $der_ext,
1312 DEPBASE => $depbase,
1313 BASE => '$*',
1314 SOURCE => '$<',
1315 SOURCEFLAG => $sourceflags{$ext} || '',
1316 OBJ => '$@',
1317 OBJOBJ => '$@',
1318 LTOBJ => '$@',
1320 COMPILE => '$(' . $lang->compiler . ')',
1321 LTCOMPILE => '$(LT' . $lang->compiler . ')',
1322 -o => $output_flag,
1323 SUBDIROBJ => !! option 'subdir-objects');
1324 }
1326 # Now include code for each specially handled object with this
1327 # language.
1328 my %seen_files = ();
1329 foreach my $file (@{$lang_specific_files{$lang->name}})
1330 {
1331 my ($derived, $source, $obj, $myext, $srcext, %file_transform) = @$file;
1333 # We might see a given object twice, for instance if it is
1334 # used under different conditions.
1335 next if defined $seen_files{$obj};
1336 $seen_files{$obj} = 1;
1338 prog_error ("found " . $lang->name .
1339 " in handle_languages, but compiler not defined")
1340 unless defined $lang->compile;
1342 my $obj_compile = $lang->compile;
1344 # Rewrite each occurrence of `AM_$flag' in the compile
1345 # rule into `${derived}_$flag' if it exists.
1346 for my $flag (@{$lang->flags})
1347 {
1348 my $val = "${derived}_$flag";
1349 $obj_compile =~ s/\(AM_$flag\)/\($val\)/
1350 if set_seen ($val);
1351 }
1353 my $libtool_tag = '';
1354 if ($lang->libtool_tag && exists $libtool_tags{$lang->libtool_tag})
1355 {
1356 $libtool_tag = '--tag=' . $lang->libtool_tag . ' '
1357 }
1359 my $ptltflags = "${derived}_LIBTOOLFLAGS";
1360 $ptltflags = 'AM_LIBTOOLFLAGS' unless set_seen $ptltflags;
1362 my $obj_ltcompile =
1363 "\$(LIBTOOL) $libtool_tag\$($ptltflags) \$(LIBTOOLFLAGS) "
1364 . "--mode=compile $obj_compile";
1366 # We _need_ `-o' for per object rules.
1367 my $output_flag = $lang->output_flag || '-o';
1369 my $depbase = dirname ($obj);
1370 $depbase = ''
1371 if $depbase eq '.';
1372 $depbase .= '/'
1373 unless $depbase eq '';
1374 $depbase .= '$(DEPDIR)/' . basename ($obj);
1376 # Support for deansified files in subdirectories is ugly
1377 # enough to deserve an explanation.
1378 #
1379 # A Note about normal ansi2knr processing first. On
1380 #
1381 # AUTOMAKE_OPTIONS = ansi2knr
1382 # bin_PROGRAMS = foo
1383 # foo_SOURCES = foo.c
1384 #
1385 # we generate rules similar to:
1386 #
1387 # foo: foo$U.o; link ...
1388 # foo$U.o: foo$U.c; compile ...
1389 # foo_.c: foo.c; ansi2knr ...
1390 #
1391 # this is fairly compact, and will call ansi2knr depending
1392 # on the value of $U (`' or `_').
1393 #
1394 # It's harder with subdir sources. On
1395 #
1396 # AUTOMAKE_OPTIONS = ansi2knr
1397 # bin_PROGRAMS = foo
1398 # foo_SOURCES = sub/foo.c
1399 #
1400 # we have to create foo_.c in the current directory.
1401 # (Unless the user asks 'subdir-objects'.) This is important
1402 # in case the same file (`foo.c') is compiled from other
1403 # directories with different cpp options: foo_.c would
1404 # be preprocessed for only one set of options if it were
1405 # put in the subdirectory.
1406 #
1407 # Because foo$U.o must be built from either foo_.c or
1408 # sub/foo.c we can't be as concise as in the first example.
1409 # Instead we output
1410 #
1411 # foo: foo$U.o; link ...
1412 # foo_.o: foo_.c; compile ...
1413 # foo.o: sub/foo.c; compile ...
1414 # foo_.c: foo.c; ansi2knr ...
1415 #
1416 # This is why we'll now transform $rule_file twice
1417 # if we detect this case.
1418 # A first time we output the compile rule with `$U'
1419 # replaced by `_' and the source directory removed,
1420 # and another time we simply remove `$U'.
1421 #
1422 # Note that at this point $source (as computed by
1423 # &handle_single_transform) is `sub/foo$U.c'.
1424 # This can be confusing: it can be used as-is when
1425 # subdir-objects is set, otherwise you have to know
1426 # it really means `foo_.c' or `sub/foo.c'.
1427 my $objdir = dirname ($obj);
1428 my $srcdir = dirname ($source);
1429 if ($lang->ansi && $obj =~ /\$U/)
1430 {
1431 prog_error "`$obj' contains \$U, but `$source' doesn't."
1432 if $source !~ /\$U/;
1434 (my $source_ = $source) =~ s/\$U/_/g;
1435 # Output an additional rule if _.c and .c are not in
1436 # the same directory. (_.c is always in $objdir.)
1437 if ($objdir ne $srcdir)
1438 {
1439 (my $obj_ = $obj) =~ s/\$U/_/g;
1440 (my $depbase_ = $depbase) =~ s/\$U/_/g;
1441 $source_ = basename ($source_);
1443 $output_rules .=
1444 file_contents ($rule_file,
1445 new Automake::Location,
1446 %transform,
1447 GENERIC => 0,
1449 DEPBASE => $depbase_,
1450 BASE => $obj_,
1451 SOURCE => $source_,
1452 SOURCEFLAG => $sourceflags{$srcext} || '',
1453 OBJ => "$obj_$myext",
1454 OBJOBJ => "$obj_.obj",
1455 LTOBJ => "$obj_.lo",
1457 COMPILE => $obj_compile,
1458 LTCOMPILE => $obj_ltcompile,
1459 -o => $output_flag,
1460 %file_transform);
1461 $obj =~ s/\$U//g;
1462 $depbase =~ s/\$U//g;
1463 $source =~ s/\$U//g;
1464 }
1465 }
1467 $output_rules .=
1468 file_contents ($rule_file,
1469 new Automake::Location,
1470 %transform,
1471 GENERIC => 0,
1473 DEPBASE => $depbase,
1474 BASE => $obj,
1475 SOURCE => $source,
1476 SOURCEFLAG => $sourceflags{$srcext} || '',
1477 # Use $myext and not `.o' here, in case
1478 # we are actually building a new source
1479 # file -- e.g. via yacc.
1480 OBJ => "$obj$myext",
1481 OBJOBJ => "$obj.obj",
1482 LTOBJ => "$obj.lo",
1484 COMPILE => $obj_compile,
1485 LTCOMPILE => $obj_ltcompile,
1486 -o => $output_flag,
1487 %file_transform);
1488 }
1490 # The rest of the loop is done once per language.
1491 next if defined $done{$lang};
1492 $done{$lang} = 1;
1494 # Load the language dependent Makefile chunks.
1495 my %lang = map { uc ($_) => 0 } keys %languages;
1496 $lang{uc ($lang->name)} = 1;
1497 $output_rules .= file_contents ('lang-compile',
1498 new Automake::Location,
1499 %transform, %lang);
1501 # If the source to a program consists entirely of code from a
1502 # `pure' language, for instance C++ or Fortran 77, then we
1503 # don't need the C compiler code. However if we run into
1504 # something unusual then we do generate the C code. There are
1505 # probably corner cases here that do not work properly.
1506 # People linking Java code to Fortran code deserve pain.
1507 $needs_c ||= ! $lang->pure;
1509 define_compiler_variable ($lang)
1510 if ($lang->compile);
1512 define_linker_variable ($lang)
1513 if ($lang->link);
1515 require_variables ("$am_file.am", $lang->Name . " source seen",
1516 TRUE, @{$lang->config_vars});
1518 # Call the finisher.
1519 $lang->finish;
1521 # Flags listed in `->flags' are user variables (per GNU Standards),
1522 # they should not be overridden in the Makefile...
1523 my @dont_override = @{$lang->flags};
1524 # ... and so is LDFLAGS.
1525 push @dont_override, 'LDFLAGS' if $lang->link;
1527 check_user_variables @dont_override;
1528 }
1530 # If the project is entirely C++ or entirely Fortran 77 (i.e., 1
1531 # suffix rule was learned), don't bother with the C stuff. But if
1532 # anything else creeps in, then use it.
1533 $needs_c = 1
1534 if $need_link || suffix_rules_count > 1;
1536 if ($needs_c)
1537 {
1538 &define_compiler_variable ($languages{'c'})
1539 unless defined $done{$languages{'c'}};
1540 define_linker_variable ($languages{'c'});
1541 }
1542 }
1545 # append_exeext { PREDICATE } $MACRO
1546 # ----------------------------------
1547 # Append $(EXEEXT) to each filename in $F appearing in the Makefile
1548 # variable $MACRO if &PREDICATE($F) is true. @substitutions@ are
1549 # ignored.
1550 #
1551 # This is typically used on all filenames of *_PROGRAMS, and filenames
1552 # of TESTS that are programs.
1553 sub append_exeext (&$)
1554 {
1555 my ($pred, $macro) = @_;
1557 transform_variable_recursively
1558 ($macro, $macro, 'am__EXEEXT', 0, INTERNAL,
1559 sub {
1560 my ($subvar, $val, $cond, $full_cond) = @_;
1561 # Append $(EXEEXT) unless the user did it already, or it's a
1562 # @substitution@.
1563 $val .= '$(EXEEXT)'
1564 if $val !~ /(?:\$\(EXEEXT\)$|^[@]\w+[@]$)/ && &$pred ($val);
1565 return $val;
1566 });
1567 }
1570 # Check to make sure a source defined in LIBOBJS is not explicitly
1571 # mentioned. This is a separate function (as opposed to being inlined
1572 # in handle_source_transform) because it isn't always appropriate to
1573 # do this check.
1574 sub check_libobjs_sources
1575 {
1576 my ($one_file, $unxformed) = @_;
1578 foreach my $prefix ('', 'EXTRA_', 'dist_', 'nodist_',
1579 'dist_EXTRA_', 'nodist_EXTRA_')
1580 {
1581 my @files;
1582 my $varname = $prefix . $one_file . '_SOURCES';
1583 my $var = var ($varname);
1584 if ($var)
1585 {
1586 @files = $var->value_as_list_recursive;
1587 }
1588 elsif ($prefix eq '')
1589 {
1590 @files = ($unxformed . '.c');
1591 }
1592 else
1593 {
1594 next;
1595 }
1597 foreach my $file (@files)
1598 {
1599 err_var ($prefix . $one_file . '_SOURCES',
1600 "automatically discovered file `$file' should not" .
1601 " be explicitly mentioned")
1602 if defined $libsources{$file};
1603 }
1604 }
1605 }
1608 # @OBJECTS
1609 # handle_single_transform ($VAR, $TOPPARENT, $DERIVED, $OBJ, $FILE, %TRANSFORM)
1610 # -----------------------------------------------------------------------------
1611 # Does much of the actual work for handle_source_transform.
1612 # Arguments are:
1613 # $VAR is the name of the variable that the source filenames come from
1614 # $TOPPARENT is the name of the _SOURCES variable which is being processed
1615 # $DERIVED is the name of resulting executable or library
1616 # $OBJ is the object extension (e.g., `$U.lo')
1617 # $FILE the source file to transform
1618 # %TRANSFORM contains extras arguments to pass to file_contents
1619 # when producing explicit rules
1620 # Result is a list of the names of objects
1621 # %linkers_used will be updated with any linkers needed
1622 sub handle_single_transform ($$$$$%)
1623 {
1624 my ($var, $topparent, $derived, $obj, $_file, %transform) = @_;
1625 my @files = ($_file);
1626 my @result = ();
1627 my $nonansi_obj = $obj;
1628 $nonansi_obj =~ s/\$U//g;
1630 # Turn sources into objects. We use a while loop like this
1631 # because we might add to @files in the loop.
1632 while (scalar @files > 0)
1633 {
1634 $_ = shift @files;
1636 # Configure substitutions in _SOURCES variables are errors.
1637 if (/^\@.*\@$/)
1638 {
1639 my $parent_msg = '';
1640 $parent_msg = "\nand is referred to from `$topparent'"
1641 if $topparent ne $var->name;
1642 err_var ($var,
1643 "`" . $var->name . "' includes configure substitution `$_'"
1644 . $parent_msg . ";\nconfigure " .
1645 "substitutions are not allowed in _SOURCES variables");
1646 next;
1647 }
1649 # If the source file is in a subdirectory then the `.o' is put
1650 # into the current directory, unless the subdir-objects option
1651 # is in effect.
1653 # Split file name into base and extension.
1654 next if ! /^(?:(.*)\/)?([^\/]*)($KNOWN_EXTENSIONS_PATTERN)$/;
1655 my $full = $_;
1656 my $directory = $1 || '';
1657 my $base = $2;
1658 my $extension = $3;
1660 # We must generate a rule for the object if it requires its own flags.
1661 my $renamed = 0;
1662 my ($linker, $object);
1664 # This records whether we've seen a derived source file (e.g.
1665 # yacc output).
1666 my $derived_source = 0;
1668 # This holds the `aggregate context' of the file we are
1669 # currently examining. If the file is compiled with
1670 # per-object flags, then it will be the name of the object.
1671 # Otherwise it will be `AM'. This is used by the target hook
1672 # language function.
1673 my $aggregate = 'AM';
1675 $extension = &derive_suffix ($extension, $nonansi_obj);
1676 my $lang;
1677 if ($extension_map{$extension} &&
1678 ($lang = $languages{$extension_map{$extension}}))
1679 {
1680 # Found the language, so see what it says.
1681 &saw_extension ($extension);
1683 # Do we have per-executable flags for this executable?
1684 my $have_per_exec_flags = 0;
1685 my @peflags = @{$lang->flags};
1686 push @peflags, 'LIBTOOLFLAGS' if $nonansi_obj eq '.lo';
1687 foreach my $flag (@peflags)
1688 {
1689 if (set_seen ("${derived}_$flag"))
1690 {
1691 $have_per_exec_flags = 1;
1692 last;
1693 }
1694 }
1696 # Note: computed subr call. The language rewrite function
1697 # should return one of the LANG_* constants. It could
1698 # also return a list whose first value is such a constant
1699 # and whose second value is a new source extension which
1700 # should be applied. This means this particular language
1701 # generates another source file which we must then process
1702 # further.
1703 my $subr = \&{'lang_' . $lang->name . '_rewrite'};
1704 my ($r, $source_extension)
1705 = &$subr ($directory, $base, $extension,
1706 $nonansi_obj, $have_per_exec_flags, $var);
1707 # Skip this entry if we were asked not to process it.
1708 next if $r == LANG_IGNORE;
1710 # Now extract linker and other info.
1711 $linker = $lang->linker;
1713 my $this_obj_ext;
1714 if (defined $source_extension)
1715 {
1716 $this_obj_ext = $source_extension;
1717 $derived_source = 1;
1718 }
1719 elsif ($lang->ansi)
1720 {
1721 $this_obj_ext = $obj;
1722 }
1723 else
1724 {
1725 $this_obj_ext = $nonansi_obj;
1726 }
1727 $object = $base . $this_obj_ext;
1729 if ($have_per_exec_flags)
1730 {
1731 # We have a per-executable flag in effect for this
1732 # object. In this case we rewrite the object's
1733 # name to ensure it is unique.
1735 # We choose the name `DERIVED_OBJECT' to ensure
1736 # (1) uniqueness, and (2) continuity between
1737 # invocations. However, this will result in a
1738 # name that is too long for losing systems, in
1739 # some situations. So we provide _SHORTNAME to
1740 # override.
1742 my $dname = $derived;
1743 my $var = var ($derived . '_SHORTNAME');
1744 if ($var)
1745 {
1746 # FIXME: should use the same Condition as
1747 # the _SOURCES variable. But this is really
1748 # silly overkill -- nobody should have
1749 # conditional shortnames.
1750 $dname = $var->variable_value;
1751 }
1752 $object = $dname . '-' . $object;
1754 prog_error ($lang->name . " flags defined without compiler")
1755 if ! defined $lang->compile;
1757 $renamed = 1;
1758 }
1760 # If rewrite said it was ok, put the object into a
1761 # subdir.
1762 if ($r == LANG_SUBDIR && $directory ne '')
1763 {
1764 $object = $directory . '/' . $object;
1765 }
1767 # If the object file has been renamed (because per-target
1768 # flags are used) we cannot compile the file with an
1769 # inference rule: we need an explicit rule.
1770 #
1771 # If the source is in a subdirectory and the object is in
1772 # the current directory, we also need an explicit rule.
1773 #
1774 # If both source and object files are in a subdirectory
1775 # (this happens when the subdir-objects option is used),
1776 # then the inference will work.
1777 #
1778 # The latter case deserves a historical note. When the
1779 # subdir-objects option was added on 1999-04-11 it was
1780 # thought that inferences rules would work for
1781 # subdirectory objects too. Later, on 1999-11-22,
1782 # automake was changed to output explicit rules even for
1783 # subdir-objects. Nobody remembers why, but this occurred
1784 # soon after the merge of the user-dep-gen-branch so it
1785 # might be related. In late 2003 people complained about
1786 # the size of the generated Makefile.ins (libgcj, with
1787 # 2200+ subdir objects was reported to have a 9MB
1788 # Makefile), so we now rely on inference rules again.
1789 # Maybe we'll run across the same issue as in the past,
1790 # but at least this time we can document it. However since
1791 # dependency tracking has evolved it is possible that
1792 # our old problem no longer exists.
1793 # Using inference rules for subdir-objects has been tested
1794 # with GNU make, Solaris make, Ultrix make, BSD make,
1795 # HP-UX make, and OSF1 make successfully.
1796 if ($renamed
1797 || ($directory ne '' && ! option 'subdir-objects')
1798 # We must also use specific rules for a nodist_ source
1799 # if its language requests it.
1800 || ($lang->nodist_specific && ! $transform{'DIST_SOURCE'}))
1801 {
1802 my $obj_sans_ext = substr ($object, 0,
1803 - length ($this_obj_ext));
1804 my $full_ansi = $full;
1805 if ($lang->ansi && option 'ansi2knr')
1806 {
1807 $full_ansi =~ s/$KNOWN_EXTENSIONS_PATTERN$/\$U$&/;
1808 $obj_sans_ext .= '$U';
1809 }
1811 my @specifics = ($full_ansi, $obj_sans_ext,
1812 # Only use $this_obj_ext in the derived
1813 # source case because in the other case we
1814 # *don't* want $(OBJEXT) to appear here.
1815 ($derived_source ? $this_obj_ext : '.o'),
1816 $extension);
1818 # If we renamed the object then we want to use the
1819 # per-executable flag name. But if this is simply a
1820 # subdir build then we still want to use the AM_ flag
1821 # name.
1822 if ($renamed)
1823 {
1824 unshift @specifics, $derived;
1825 $aggregate = $derived;
1826 }
1827 else
1828 {
1829 unshift @specifics, 'AM';
1830 }
1832 # Each item on this list is a reference to a list consisting
1833 # of four values followed by additional transform flags for
1834 # file_contents. The four values are the derived flag prefix
1835 # (e.g. for `foo_CFLAGS', it is `foo'), the name of the
1836 # source file, the base name of the output file, and
1837 # the extension for the object file.
1838 push (@{$lang_specific_files{$lang->name}},
1839 [@specifics, %transform]);
1840 }
1841 }
1842 elsif ($extension eq $nonansi_obj)
1843 {
1844 # This is probably the result of a direct suffix rule.
1845 # In this case we just accept the rewrite.
1846 $object = "$base$extension";
1847 $object = "$directory/$object" if $directory ne '';
1848 $linker = '';
1849 }
1850 else
1851 {
1852 # No error message here. Used to have one, but it was
1853 # very unpopular.
1854 # FIXME: we could potentially do more processing here,
1855 # perhaps treating the new extension as though it were a
1856 # new source extension (as above). This would require
1857 # more restructuring than is appropriate right now.
1858 next;
1859 }
1861 err_am "object `$object' created by `$full' and `$object_map{$object}'"
1862 if (defined $object_map{$object}
1863 && $object_map{$object} ne $full);
1865 my $comp_val = (($object =~ /\.lo$/)
1866 ? COMPILE_LIBTOOL : COMPILE_ORDINARY);
1867 (my $comp_obj = $object) =~ s/\.lo$/.\$(OBJEXT)/;
1868 if (defined $object_compilation_map{$comp_obj}
1869 && $object_compilation_map{$comp_obj} != 0
1870 # Only see the error once.
1871 && ($object_compilation_map{$comp_obj}
1872 != (COMPILE_LIBTOOL | COMPILE_ORDINARY))
1873 && $object_compilation_map{$comp_obj} != $comp_val)
1874 {
1875 err_am "object `$comp_obj' created both with libtool and without";
1876 }
1877 $object_compilation_map{$comp_obj} |= $comp_val;
1879 if (defined $lang)
1880 {
1881 # Let the language do some special magic if required.
1882 $lang->target_hook ($aggregate, $object, $full, %transform);
1883 }
1885 if ($derived_source)
1886 {
1887 prog_error ($lang->name . " has automatic dependency tracking")
1888 if $lang->autodep ne 'no';
1889 # Make sure this new source file is handled next. That will
1890 # make it appear to be at the right place in the list.
1891 unshift (@files, $object);
1892 # Distribute derived sources unless the source they are
1893 # derived from is not.
1894 &push_dist_common ($object)
1895 unless ($topparent =~ /^(?:nobase_)?nodist_/);
1896 next;
1897 }
1899 $linkers_used{$linker} = 1;
1901 push (@result, $object);
1903 if (! defined $object_map{$object})
1904 {
1905 my @dep_list = ();
1906 $object_map{$object} = $full;
1908 # If resulting object is in subdir, we need to make
1909 # sure the subdir exists at build time.
1910 if ($object =~ /\//)
1911 {
1912 # FIXME: check that $DIRECTORY is somewhere in the
1913 # project
1915 # For Java, the way we're handling it right now, a
1916 # `..' component doesn't make sense.
1917 if ($lang && $lang->name eq 'java' && $object =~ /(\/|^)\.\.\//)
1918 {
1919 err_am "`$full' should not contain a `..' component";
1920 }
1922 # Make sure object is removed by `make mostlyclean'.
1923 $compile_clean_files{$object} = MOSTLY_CLEAN;
1924 # If we have a libtool object then we also must remove
1925 # the ordinary .o.
1926 if ($object =~ /\.lo$/)
1927 {
1928 (my $xobj = $object) =~ s,lo$,\$(OBJEXT),;
1929 $compile_clean_files{$xobj} = MOSTLY_CLEAN;
1931 # Remove any libtool object in this directory.
1932 $libtool_clean_directories{$directory} = 1;
1933 }
1935 push (@dep_list, require_build_directory ($directory));
1937 # If we're generating dependencies, we also want
1938 # to make sure that the appropriate subdir of the
1939 # .deps directory is created.
1940 push (@dep_list,
1941 require_build_directory ($directory . '/$(DEPDIR)'))
1942 unless option 'no-dependencies';
1943 }
1945 &pretty_print_rule ($object . ':', "\t", @dep_list)
1946 if scalar @dep_list > 0;
1947 }
1949 # Transform .o or $o file into .P file (for automatic
1950 # dependency code).
1951 if ($lang && $lang->autodep ne 'no')
1952 {
1953 my $depfile = $object;
1954 $depfile =~ s/\.([^.]*)$/.P$1/;
1955 $depfile =~ s/\$\(OBJEXT\)$/o/;
1956 $dep_files{dirname ($depfile) . '/$(DEPDIR)/'
1957 . basename ($depfile)} = 1;
1958 }
1959 }
1961 return @result;
1962 }
1965 # $LINKER
1966 # define_objects_from_sources ($VAR, $OBJVAR, $NODEFINE, $ONE_FILE,
1967 # $OBJ, $PARENT, $TOPPARENT, $WHERE, %TRANSFORM)
1968 # ---------------------------------------------------------------------------
1969 # Define an _OBJECTS variable for a _SOURCES variable (or subvariable)
1970 #
1971 # Arguments are:
1972 # $VAR is the name of the _SOURCES variable
1973 # $OBJVAR is the name of the _OBJECTS variable if known (otherwise
1974 # it will be generated and returned).
1975 # $NODEFINE is a boolean: if true, $OBJVAR will not be defined (but
1976 # work done to determine the linker will be).
1977 # $ONE_FILE is the canonical (transformed) name of object to build
1978 # $OBJ is the object extension (i.e. either `.o' or `.lo').
1979 # $TOPPARENT is the _SOURCES variable being processed.
1980 # $WHERE context into which this definition is done
1981 # %TRANSFORM extra arguments to pass to file_contents when producing
1982 # rules
1983 #
1984 # Result is a pair ($LINKER, $OBJVAR):
1985 # $LINKER is a boolean, true if a linker is needed to deal with the objects
1986 sub define_objects_from_sources ($$$$$$$%)
1987 {
1988 my ($var, $objvar, $nodefine, $one_file,
1989 $obj, $topparent, $where, %transform) = @_;
1991 my $needlinker = "";
1993 transform_variable_recursively
1994 ($var, $objvar, 'am__objects', $nodefine, $where,
1995 # The transform code to run on each filename.
1996 sub {
1997 my ($subvar, $val, $cond, $full_cond) = @_;
1998 my @trans = handle_single_transform ($subvar, $topparent,
1999 $one_file, $obj, $val,
2000 %transform);
2001 $needlinker = "true" if @trans;
2002 return @trans;
2003 });
2005 return $needlinker;
2006 }
2009 # handle_source_transform ($CANON_TARGET, $TARGET, $OBJEXT, $WHERE, %TRANSFORM)
2010 # -----------------------------------------------------------------------------
2011 # Handle SOURCE->OBJECT transform for one program or library.
2012 # Arguments are:
2013 # canonical (transformed) name of target to build
2014 # actual target of object to build
2015 # object extension (i.e., either `.o' or `$o')
2016 # location of the source variable
2017 # extra arguments to pass to file_contents when producing rules
2018 # Return the name of the linker variable that must be used.
2019 # Empty return means just use `LINK'.
2020 sub handle_source_transform ($$$$%)
2021 {
2022 # one_file is canonical name. unxformed is given name. obj is
2023 # object extension.
2024 my ($one_file, $unxformed, $obj, $where, %transform) = @_;
2026 my $linker = '';
2028 # No point in continuing if _OBJECTS is defined.
2029 return if reject_var ($one_file . '_OBJECTS',
2030 $one_file . '_OBJECTS should not be defined');
2032 my %used_pfx = ();
2033 my $needlinker;
2034 %linkers_used = ();
2035 foreach my $prefix ('', 'EXTRA_', 'dist_', 'nodist_',
2036 'dist_EXTRA_', 'nodist_EXTRA_')
2037 {
2038 my $varname = $prefix . $one_file . "_SOURCES";
2039 my $var = var $varname;
2040 next unless $var;
2042 # We are going to define _OBJECTS variables using the prefix.
2043 # Then we glom them all together. So we can't use the null
2044 # prefix here as we need it later.
2045 my $xpfx = ($prefix eq '') ? 'am_' : $prefix;
2047 # Keep track of which prefixes we saw.
2048 $used_pfx{$xpfx} = 1
2049 unless $prefix =~ /EXTRA_/;
2051 push @sources, "\$($varname)";
2052 push @dist_sources, shadow_unconditionally ($varname, $where)
2053 unless (option ('no-dist') || $prefix =~ /^nodist_/);
2055 $needlinker |=
2056 define_objects_from_sources ($varname,
2057 $xpfx . $one_file . '_OBJECTS',
2058 $prefix =~ /EXTRA_/,
2059 $one_file, $obj, $varname, $where,
2060 DIST_SOURCE => ($prefix !~ /^nodist_/),
2061 %transform);
2062 }
2063 if ($needlinker)
2064 {
2065 $linker ||= &resolve_linker (%linkers_used);
2066 }
2068 my @keys = sort keys %used_pfx;
2069 if (scalar @keys == 0)
2070 {
2071 # The default source for libfoo.la is libfoo.c, but for
2072 # backward compatibility we first look at libfoo_la.c,
2073 # if no default source suffix is given.
2074 my $old_default_source = "$one_file.c";
2075 my $ext_var = var ('AM_DEFAULT_SOURCE_EXT');
2076 my $default_source_ext = $ext_var ? variable_value ($ext_var) : '.c';
2077 msg_var ('unsupported', $ext_var, $ext_var->name . " can assume at most one value")
2078 if $default_source_ext =~ /[\t ]/;
2079 (my $default_source = $unxformed) =~ s,(\.[^./\\]*)?$,$default_source_ext,;
2080 if ($old_default_source ne $default_source
2081 && !$ext_var
2082 && (rule $old_default_source
2083 || rule '$(srcdir)/' . $old_default_source
2084 || rule '${srcdir}/' . $old_default_source
2085 || -f $old_default_source))
2086 {
2087 my $loc = $where->clone;
2088 $loc->pop_context;
2089 msg ('obsolete', $loc,
2090 "the default source for `$unxformed' has been changed "
2091 . "to `$default_source'.\n(Using `$old_default_source' for "
2092 . "backward compatibility.)");
2093 $default_source = $old_default_source;
2094 }
2095 # If a rule exists to build this source with a $(srcdir)
2096 # prefix, use that prefix in our variables too. This is for
2097 # the sake of BSD Make.
2098 if (rule '$(srcdir)/' . $default_source
2099 || rule '${srcdir}/' . $default_source)
2100 {
2101 $default_source = '$(srcdir)/' . $default_source;
2102 }
2104 &define_variable ($one_file . "_SOURCES", $default_source, $where);
2105 push (@sources, $default_source);
2106 push (@dist_sources, $default_source);
2108 %linkers_used = ();
2109 my (@result) =
2110 handle_single_transform ($one_file . '_SOURCES',
2111 $one_file . '_SOURCES',
2112 $one_file, $obj,
2113 $default_source, %transform);
2114 $linker ||= &resolve_linker (%linkers_used);
2115 define_pretty_variable ($one_file . '_OBJECTS', TRUE, $where, @result);
2116 }
2117 else
2118 {
2119 @keys = map { '$(' . $_ . $one_file . '_OBJECTS)' } @keys;
2120 define_pretty_variable ($one_file . '_OBJECTS', TRUE, $where, @keys);
2121 }
2123 # If we want to use `LINK' we must make sure it is defined.
2124 if ($linker eq '')
2125 {
2126 $need_link = 1;
2127 }
2129 return $linker;
2130 }
2133 # handle_lib_objects ($XNAME, $VAR)
2134 # ---------------------------------
2135 # Special-case ALLOCA and LIBOBJS substitutions in _LDADD or _LIBADD variables.
2136 # Also, generate _DEPENDENCIES variable if appropriate.
2137 # Arguments are:
2138 # transformed name of object being built, or empty string if no object
2139 # name of _LDADD/_LIBADD-type variable to examine
2140 # Returns 1 if LIBOBJS seen, 0 otherwise.
2141 sub handle_lib_objects
2142 {
2143 my ($xname, $varname) = @_;
2145 my $var = var ($varname);
2146 prog_error "handle_lib_objects: `$varname' undefined"
2147 unless $var;
2148 prog_error "handle_lib_objects: unexpected variable name `$varname'"
2149 unless $varname =~ /^(.*)(?:LIB|LD)ADD$/;
2150 my $prefix = $1 || 'AM_';
2152 my $seen_libobjs = 0;
2153 my $flagvar = 0;
2155 transform_variable_recursively
2156 ($varname, $xname . '_DEPENDENCIES', 'am__DEPENDENCIES',
2157 ! $xname, INTERNAL,
2158 # Transformation function, run on each filename.
2159 sub {
2160 my ($subvar, $val, $cond, $full_cond) = @_;
2162 if ($val =~ /^-/)
2163 {
2164 # Skip -lfoo and -Ldir silently; these are explicitly allowed.
2165 if ($val !~ /^-[lL]/ &&
2166 # Skip -dlopen and -dlpreopen; these are explicitly allowed
2167 # for Libtool libraries or programs. (Actually we are a bit
2168 # laxe here since this code also applies to non-libtool
2169 # libraries or programs, for which -dlopen and -dlopreopen
2170 # are pure nonsense. Diagnosing this doesn't seem very
2171 # important: the developer will quickly get complaints from
2172 # the linker.)
2173 $val !~ /^-dl(?:pre)?open$/ &&
2174 # Only get this error once.
2175 ! $flagvar)
2176 {
2177 $flagvar = 1;
2178 # FIXME: should display a stack of nested variables
2179 # as context when $var != $subvar.
2180 err_var ($var, "linker flags such as `$val' belong in "
2181 . "`${prefix}LDFLAGS");
2182 }
2183 return ();
2184 }
2185 elsif ($val !~ /^\@.*\@$/)
2186 {
2187 # Assume we have a file of some sort, and output it into the
2188 # dependency variable. Autoconf substitutions are not output;
2189 # rarely is a new dependency substituted into e.g. foo_LDADD
2190 # -- but bad things (e.g. -lX11) are routinely substituted.
2191 # Note that LIBOBJS and ALLOCA are exceptions to this rule,
2192 # and handled specially below.
2193 return $val;
2194 }
2195 elsif ($val =~ /^\@(LT)?LIBOBJS\@$/)
2196 {
2197 handle_LIBOBJS ($subvar, $cond, $1);
2198 $seen_libobjs = 1;
2199 return $val;
2200 }
2201 elsif ($val =~ /^\@(LT)?ALLOCA\@$/)
2202 {
2203 handle_ALLOCA ($subvar, $cond, $1);
2204 return $val;
2205 }
2206 else
2207 {
2208 return ();
2209 }
2210 });
2212 return $seen_libobjs;
2213 }
2215 # handle_LIBOBJS_or_ALLOCA ($VAR)
2216 # -------------------------------
2217 # Definitions common to LIBOBJS and ALLOCA.
2218 # VAR should be one of LIBOBJS, LTLIBOBJS, ALLOCA, or LTALLOCA.
2219 sub handle_LIBOBJS_or_ALLOCA ($)
2220 {
2221 my ($var) = @_;
2223 my $dir = '';
2225 # If LIBOBJS files must be built in another directory we have
2226 # to define LIBOBJDIR and ensure the files get cleaned.
2227 # Otherwise LIBOBJDIR can be left undefined, and the cleaning
2228 # is achieved by `rm -f *.$(OBJEXT)' in compile.am.
2229 if ($config_libobj_dir
2230 && $relative_dir ne $config_libobj_dir)
2231 {
2232 if (option 'subdir-objects')
2233 {
2234 # In the top-level Makefile we do not use $(top_builddir), because
2235 # we are already there, and since the targets are built without
2236 # a $(top_builddir), it helps BSD Make to match them with
2237 # dependencies.
2238 $dir = "$config_libobj_dir/" if $config_libobj_dir ne '.';
2239 $dir = "$topsrcdir/$dir" if $relative_dir ne '.';
2240 define_variable ('LIBOBJDIR', "$dir", INTERNAL);
2241 $clean_files{"\$($var)"} = MOSTLY_CLEAN;
2242 # If LTLIBOBJS is used, we must also clear LIBOBJS (which might
2243 # be created by libtool as a side-effect of creating LTLIBOBJS).
2244 $clean_files{"\$($var)"} = MOSTLY_CLEAN if $var =~ s/^LT//;
2245 }
2246 else
2247 {
2248 error ("`\$($var)' cannot be used outside `$config_libobj_dir' if"
2249 . " `subdir-objects' is not set");
2250 }
2251 }
2253 return $dir;
2254 }
2256 sub handle_LIBOBJS ($$$)
2257 {
2258 my ($var, $cond, $lt) = @_;
2259 my $myobjext = $lt ? 'lo' : 'o';
2260 $lt ||= '';
2262 $var->requires_variables ("\@${lt}LIBOBJS\@ used", $lt . 'LIBOBJS')
2263 if ! keys %libsources;
2265 my $dir = handle_LIBOBJS_or_ALLOCA "${lt}LIBOBJS";
2267 foreach my $iter (keys %libsources)
2268 {
2269 if ($iter =~ /\.[cly]$/)
2270 {
2271 &saw_extension ($&);
2272 &saw_extension ('.c');
2273 }
2275 if ($iter =~ /\.h$/)
2276 {
2277 require_libsource_with_macro ($cond, $var, FOREIGN, $iter);
2278 }
2279 elsif ($iter ne 'alloca.c')
2280 {
2281 my $rewrite = $iter;
2282 $rewrite =~ s/\.c$/.P$myobjext/;
2283 $dep_files{$dir . '$(DEPDIR)/' . $rewrite} = 1;
2284 $rewrite = "^" . quotemeta ($iter) . "\$";
2285 # Only require the file if it is not a built source.
2286 my $bs = var ('BUILT_SOURCES');
2287 if (! $bs || ! grep (/$rewrite/, $bs->value_as_list_recursive))
2288 {
2289 require_libsource_with_macro ($cond, $var, FOREIGN, $iter);
2290 }
2291 }
2292 }
2293 }
2295 sub handle_ALLOCA ($$$)
2296 {
2297 my ($var, $cond, $lt) = @_;
2298 my $myobjext = $lt ? 'lo' : 'o';
2299 $lt ||= '';
2300 my $dir = handle_LIBOBJS_or_ALLOCA "${lt}ALLOCA";
2302 $var->requires_variables ("\@${lt}ALLOCA\@ used", $lt . 'ALLOCA');
2303 $dep_files{$dir . '$(DEPDIR)/alloca.P' . $myobjext} = 1;
2304 require_libsource_with_macro ($cond, $var, FOREIGN, 'alloca.c');
2305 &saw_extension ('.c');
2306 }
2308 # Canonicalize the input parameter
2309 sub canonicalize
2310 {
2311 my ($string) = @_;
2312 $string =~ tr/A-Za-z0-9_\@/_/c;
2313 return $string;
2314 }
2316 # Canonicalize a name, and check to make sure the non-canonical name
2317 # is never used. Returns canonical name. Arguments are name and a
2318 # list of suffixes to check for.
2319 sub check_canonical_spelling
2320 {
2321 my ($name, @suffixes) = @_;
2323 my $xname = &canonicalize ($name);
2324 if ($xname ne $name)
2325 {
2326 foreach my $xt (@suffixes)
2327 {
2328 reject_var ("$name$xt", "use `$xname$xt', not `$name$xt'");
2329 }
2330 }
2332 return $xname;
2333 }
2336 # handle_compile ()
2337 # -----------------
2338 # Set up the compile suite.
2339 sub handle_compile ()
2340 {
2341 return
2342 unless $get_object_extension_was_run;
2344 # Boilerplate.
2345 my $default_includes = '';
2346 if (! option 'nostdinc')
2347 {
2348 my @incs = ('-I.', subst ('am__isrc'));
2350 my $var = var 'CONFIG_HEADER';
2351 if ($var)
2352 {
2353 foreach my $hdr (split (' ', $var->variable_value))
2354 {
2355 push @incs, '-I' . dirname ($hdr);
2356 }
2357 }
2358 # We want `-I. -I$(srcdir)', but the latter -I is redundant
2359 # and unaesthetic in non-VPATH builds. We use `-I.@am__isrc@`
2360 # instead. It will be replaced by '-I.' or '-I. -I$(srcdir)'.
2361 # Items in CONFIG_HEADER are never in $(srcdir) so it is safe
2362 # to just put @am__isrc@ right after `-I.', without a space.
2363 ($default_includes = ' ' . uniq (@incs)) =~ s/ @/@/;
2364 }
2366 my (@mostly_rms, @dist_rms);
2367 foreach my $item (sort keys %compile_clean_files)
2368 {
2369 if ($compile_clean_files{$item} == MOSTLY_CLEAN)
2370 {
2371 push (@mostly_rms, "\t-rm -f $item");
2372 }
2373 elsif ($compile_clean_files{$item} == DIST_CLEAN)
2374 {
2375 push (@dist_rms, "\t-rm -f $item");
2376 }
2377 else
2378 {
2379 prog_error 'invalid entry in %compile_clean_files';
2380 }
2381 }
2383 my ($coms, $vars, $rules) =
2384 &file_contents_internal (1, "$libdir/am/compile.am",
2385 new Automake::Location,
2386 ('DEFAULT_INCLUDES' => $default_includes,
2387 'MOSTLYRMS' => join ("\n", @mostly_rms),
2388 'DISTRMS' => join ("\n", @dist_rms)));
2389 $output_vars .= $vars;
2390 $output_rules .= "$coms$rules";
2392 # Check for automatic de-ANSI-fication.
2393 if (option 'ansi2knr')
2394 {
2395 my ($ansi2knr_filename, $ansi2knr_where) = @{option 'ansi2knr'};
2396 my $ansi2knr_dir = '';
2398 require_variables ($ansi2knr_where, "option `ansi2knr' is used",
2399 TRUE, "ANSI2KNR", "U");
2401 # topdir is where ansi2knr should be.
2402 if ($ansi2knr_filename eq 'ansi2knr')
2403 {
2404 # Only require ansi2knr files if they should appear in
2405 # this directory.
2406 require_file ($ansi2knr_where, FOREIGN,
2407 'ansi2knr.c', 'ansi2knr.1');
2409 # ansi2knr needs to be built before subdirs, so unshift it.
2410 unshift (@all, '$(ANSI2KNR)');
2411 }
2412 else
2413 {
2414 $ansi2knr_dir = dirname ($ansi2knr_filename);
2415 }
2417 $output_rules .= &file_contents ('ansi2knr',
2418 new Automake::Location,
2419 'ANSI2KNR-DIR' => $ansi2knr_dir);
2421 }
2422 }
2424 # handle_libtool ()
2425 # -----------------
2426 # Handle libtool rules.
2427 sub handle_libtool
2428 {
2429 return unless var ('LIBTOOL');
2431 # Libtool requires some files, but only at top level.
2432 # (Starting with Libtool 2.0 we do not have to bother. These
2433 # requirements are done with AC_REQUIRE_AUX_FILE.)
2434 require_conf_file_with_macro (TRUE, 'LIBTOOL', FOREIGN, @libtool_files)
2435 if $relative_dir eq '.' && ! $libtool_new_api;
2437 my @libtool_rms;
2438 foreach my $item (sort keys %libtool_clean_directories)
2439 {
2440 my $dir = ($item eq '.') ? '' : "$item/";
2441 # .libs is for Unix, _libs for DOS.
2442 push (@libtool_rms, "\t-rm -rf ${dir}.libs ${dir}_libs");
2443 }
2445 check_user_variables 'LIBTOOLFLAGS';
2447 # Output the libtool compilation rules.
2448 $output_rules .= &file_contents ('libtool',
2449 new Automake::Location,
2450 LTRMS => join ("\n", @libtool_rms));
2451 }
2453 # handle_programs ()
2454 # ------------------
2455 # Handle C programs.
2456 sub handle_programs
2457 {
2458 my @proglist = &am_install_var ('progs', 'PROGRAMS',
2459 'bin', 'sbin', 'libexec', 'pkglib',
2460 'noinst', 'check');
2461 return if ! @proglist;
2463 my $seen_global_libobjs =
2464 var ('LDADD') && &handle_lib_objects ('', 'LDADD');
2466 foreach my $pair (@proglist)
2467 {
2468 my ($where, $one_file) = @$pair;
2470 my $seen_libobjs = 0;
2471 my $obj = get_object_extension '.$(OBJEXT)';
2473 # Strip any $(EXEEXT) suffix the user might have added, or this
2474 # will confuse &handle_source_transform and &check_canonical_spelling.
2475 # We'll add $(EXEEXT) back later anyway.
2476 $one_file =~ s/\$\(EXEEXT\)$//;
2478 $known_programs{$one_file} = $where;
2480 # Canonicalize names and check for misspellings.
2481 my $xname = &check_canonical_spelling ($one_file, '_LDADD', '_LDFLAGS',
2482 '_SOURCES', '_OBJECTS',
2483 '_DEPENDENCIES');
2485 $where->push_context ("while processing program `$one_file'");
2486 $where->set (INTERNAL->get);
2488 my $linker = &handle_source_transform ($xname, $one_file, $obj, $where,
2489 NONLIBTOOL => 1, LIBTOOL => 0);
2491 if (var ($xname . "_LDADD"))
2492 {
2493 $seen_libobjs = &handle_lib_objects ($xname, $xname . '_LDADD');
2494 }
2495 else
2496 {
2497 # User didn't define prog_LDADD override. So do it.
2498 &define_variable ($xname . '_LDADD', '$(LDADD)', $where);
2500 # This does a bit too much work. But we need it to
2501 # generate _DEPENDENCIES when appropriate.
2502 if (var ('LDADD'))
2503 {
2504 $seen_libobjs = &handle_lib_objects ($xname, 'LDADD');
2505 }
2506 }
2508 reject_var ($xname . '_LIBADD',
2509 "use `${xname}_LDADD', not `${xname}_LIBADD'");
2511 set_seen ($xname . '_DEPENDENCIES');
2512 set_seen ($xname . '_LDFLAGS');
2514 # Determine program to use for link.
2515 my $xlink = &define_per_target_linker_variable ($linker, $xname);
2517 # If the resulting program lies into a subdirectory,
2518 # make sure this directory will exist.
2519 my $dirstamp = require_build_directory_maybe ($one_file);
2521 $libtool_clean_directories{dirname ($one_file)} = 1;
2523 $output_rules .= &file_contents ('program',
2524 $where,
2525 PROGRAM => $one_file,
2526 XPROGRAM => $xname,
2527 XLINK => $xlink,
2528 DIRSTAMP => $dirstamp,
2529 EXEEXT => '$(EXEEXT)');
2531 if ($seen_libobjs || $seen_global_libobjs)
2532 {
2533 if (var ($xname . '_LDADD'))
2534 {
2535 &check_libobjs_sources ($xname, $xname . '_LDADD');
2536 }
2537 elsif (var ('LDADD'))
2538 {
2539 &check_libobjs_sources ($xname, 'LDADD');
2540 }
2541 }
2542 }
2543 }
2546 # handle_libraries ()
2547 # -------------------
2548 # Handle libraries.
2549 sub handle_libraries
2550 {
2551 my @liblist = &am_install_var ('libs', 'LIBRARIES',
2552 'lib', 'pkglib', 'noinst', 'check');
2553 return if ! @liblist;
2555 my @prefix = am_primary_prefixes ('LIBRARIES', 0, 'lib', 'pkglib',
2556 'noinst', 'check');
2558 if (@prefix)
2559 {
2560 my $var = rvar ($prefix[0] . '_LIBRARIES');
2561 $var->requires_variables ('library used', 'RANLIB');
2562 }
2564 &define_variable ('AR', 'ar', INTERNAL);
2565 &define_variable ('ARFLAGS', 'cru', INTERNAL);
2567 foreach my $pair (@liblist)
2568 {
2569 my ($where, $onelib) = @$pair;
2571 my $seen_libobjs = 0;
2572 # Check that the library fits the standard naming convention.
2573 my $bn = basename ($onelib);
2574 if ($bn !~ /^lib.*\.a$/)
2575 {
2576 $bn =~ s/^(?:lib)?(.*?)(?:\.[^.]*)?$/lib$1.a/;
2577 my $suggestion = dirname ($onelib) . "/$bn";
2578 $suggestion =~ s|^\./||g;
2579 msg ('error-gnu/warn', $where,
2580 "`$onelib' is not a standard library name\n"
2581 . "did you mean `$suggestion'?")
2582 }
2584 $where->push_context ("while processing library `$onelib'");
2585 $where->set (INTERNAL->get);
2587 my $obj = get_object_extension '.$(OBJEXT)';
2589 # Canonicalize names and check for misspellings.
2590 my $xlib = &check_canonical_spelling ($onelib, '_LIBADD', '_SOURCES',
2591 '_OBJECTS', '_DEPENDENCIES',
2592 '_AR');
2594 if (! var ($xlib . '_AR'))
2595 {
2596 &define_variable ($xlib . '_AR', '$(AR) $(ARFLAGS)', $where);
2597 }
2599 # Generate support for conditional object inclusion in
2600 # libraries.
2601 if (var ($xlib . '_LIBADD'))
2602 {
2603 if (&handle_lib_objects ($xlib, $xlib . '_LIBADD'))
2604 {
2605 $seen_libobjs = 1;
2606 }
2607 }
2608 else
2609 {
2610 &define_variable ($xlib . "_LIBADD", '', $where);
2611 }
2613 reject_var ($xlib . '_LDADD',
2614 "use `${xlib}_LIBADD', not `${xlib}_LDADD'");
2616 # Make sure we at look at this.
2617 set_seen ($xlib . '_DEPENDENCIES');
2619 &handle_source_transform ($xlib, $onelib, $obj, $where,
2620 NONLIBTOOL => 1, LIBTOOL => 0);
2622 # If the resulting library lies into a subdirectory,
2623 # make sure this directory will exist.
2624 my $dirstamp = require_build_directory_maybe ($onelib);
2626 $output_rules .= &file_contents ('library',
2627 $where,
2628 LIBRARY => $onelib,
2629 XLIBRARY => $xlib,
2630 DIRSTAMP => $dirstamp);
2632 if ($seen_libobjs)
2633 {
2634 if (var ($xlib . '_LIBADD'))
2635 {
2636 &check_libobjs_sources ($xlib, $xlib . '_LIBADD');
2637 }
2638 }
2639 }
2640 }
2643 # handle_ltlibraries ()
2644 # ---------------------
2645 # Handle shared libraries.
2646 sub handle_ltlibraries
2647 {
2648 my @liblist = &am_install_var ('ltlib', 'LTLIBRARIES',
2649 'noinst', 'lib', 'pkglib', 'check');
2650 return if ! @liblist;
2652 my @prefix = am_primary_prefixes ('LTLIBRARIES', 0, 'lib', 'pkglib',
2653 'noinst', 'check');
2655 if (@prefix)
2656 {
2657 my $var = rvar ($prefix[0] . '_LTLIBRARIES');
2658 $var->requires_variables ('Libtool library used', 'LIBTOOL');
2659 }
2661 my %instdirs = ();
2662 my %instsubdirs = ();
2663 my %instconds = ();
2664 my %liblocations = (); # Location (in Makefile.am) of each library.
2666 foreach my $key (@prefix)
2667 {
2668 # Get the installation directory of each library.
2669 my $dir = $key;
2670 my $strip_subdir = 1;
2671 if ($dir =~ /^nobase_/)
2672 {
2673 $dir =~ s/^nobase_//;
2674 $strip_subdir = 0;
2675 }
2676 my $var = rvar ($key . '_LTLIBRARIES');
2678 # We reject libraries which are installed in several places
2679 # in the same condition, because we can only specify one
2680 # `-rpath' option.
2681 $var->traverse_recursively
2682 (sub
2683 {
2684 my ($var, $val, $cond, $full_cond) = @_;
2685 my $hcond = $full_cond->human;
2686 my $where = $var->rdef ($cond)->location;
2687 my $ldir = '';
2688 $ldir = '/' . dirname ($val)
2689 if (!$strip_subdir);
2690 # A library cannot be installed in different directory
2691 # in overlapping conditions.
2692 if (exists $instconds{$val})
2693 {
2694 my ($msg, $acond) =
2695 $instconds{$val}->ambiguous_p ($val, $full_cond);
2697 if ($msg)
2698 {
2699 error ($where, $msg, partial => 1);
2700 my $dirtxt = "installed " . ($strip_subdir ? "in" : "below") . " `$dir'";
2701 $dirtxt = "built for `$dir'"
2702 if $dir eq 'EXTRA' || $dir eq 'noinst' || $dir eq 'check';
2703 my $dircond =
2704 $full_cond->true ? "" : " in condition $hcond";
2706 error ($where, "`$val' should be $dirtxt$dircond ...",
2707 partial => 1);
2709 my $hacond = $acond->human;
2710 my $adir = $instdirs{$val}{$acond};
2711 my $adirtxt = "installed in `$adir'";
2712 $adirtxt = "built for `$adir'"
2713 if ($adir eq 'EXTRA' || $adir eq 'noinst'
2714 || $adir eq 'check');
2715 my $adircond = $acond->true ? "" : " in condition $hacond";
2717 my $onlyone = ($dir ne $adir) ?
2718 ("\nLibtool libraries can be built for only one "
2719 . "destination.") : "";
2721 error ($liblocations{$val}{$acond},
2722 "... and should also be $adirtxt$adircond.$onlyone");
2723 return;
2724 }
2725 }
2726 else
2727 {
2728 $instconds{$val} = new Automake::DisjConditions;
2729 }
2730 $instdirs{$val}{$full_cond} = $dir;
2731 $instsubdirs{$val}{$full_cond} = $ldir;
2732 $liblocations{$val}{$full_cond} = $where;
2733 $instconds{$val} = $instconds{$val}->merge ($full_cond);
2734 },
2735 sub
2736 {
2737 return ();
2738 },
2739 skip_ac_subst => 1);
2740 }
2742 foreach my $pair (@liblist)
2743 {
2744 my ($where, $onelib) = @$pair;
2746 my $seen_libobjs = 0;
2747 my $obj = get_object_extension '.lo';
2749 # Canonicalize names and check for misspellings.
2750 my $xlib = &check_canonical_spelling ($onelib, '_LIBADD', '_LDFLAGS',
2751 '_SOURCES', '_OBJECTS',
2752 '_DEPENDENCIES');
2754 # Check that the library fits the standard naming convention.
2755 my $libname_rx = '^lib.*\.la';
2756 my $ldvar = var ("${xlib}_LDFLAGS") || var ('AM_LDFLAGS');
2757 my $ldvar2 = var ('LDFLAGS');
2758 if (($ldvar && grep (/-module/, $ldvar->value_as_list_recursive))
2759 || ($ldvar2 && grep (/-module/, $ldvar2->value_as_list_recursive)))
2760 {
2761 # Relax name checking for libtool modules.
2762 $libname_rx = '\.la';
2763 }
2765 my $bn = basename ($onelib);
2766 if ($bn !~ /$libname_rx$/)
2767 {
2768 my $type = 'library';
2769 if ($libname_rx eq '\.la')
2770 {
2771 $bn =~ s/^(lib|)(.*?)(?:\.[^.]*)?$/$1$2.la/;
2772 $type = 'module';
2773 }
2774 else
2775 {
2776 $bn =~ s/^(?:lib)?(.*?)(?:\.[^.]*)?$/lib$1.la/;
2777 }
2778 my $suggestion = dirname ($onelib) . "/$bn";
2779 $suggestion =~ s|^\./||g;
2780 msg ('error-gnu/warn', $where,
2781 "`$onelib' is not a standard libtool $type name\n"
2782 . "did you mean `$suggestion'?")
2783 }
2785 $where->push_context ("while processing Libtool library `$onelib'");
2786 $where->set (INTERNAL->get);
2788 # Make sure we look at these.
2789 set_seen ($xlib . '_LDFLAGS');
2790 set_seen ($xlib . '_DEPENDENCIES');
2792 # Generate support for conditional object inclusion in
2793 # libraries.
2794 if (var ($xlib . '_LIBADD'))
2795 {
2796 if (&handle_lib_objects ($xlib, $xlib . '_LIBADD'))
2797 {
2798 $seen_libobjs = 1;
2799 }
2800 }
2801 else
2802 {
2803 &define_variable ($xlib . "_LIBADD", '', $where);
2804 }
2806 reject_var ("${xlib}_LDADD",
2807 "use `${xlib}_LIBADD', not `${xlib}_LDADD'");
2810 my $linker = &handle_source_transform ($xlib, $onelib, $obj, $where,
2811 NONLIBTOOL => 0, LIBTOOL => 1);
2813 # Determine program to use for link.
2814 my $xlink = &define_per_target_linker_variable ($linker, $xlib);
2816 my $rpathvar = "am_${xlib}_rpath";
2817 my $rpath = "\$($rpathvar)";
2818 foreach my $rcond ($instconds{$onelib}->conds)
2819 {
2820 my $val;
2821 if ($instdirs{$onelib}{$rcond} eq 'EXTRA'
2822 || $instdirs{$onelib}{$rcond} eq 'noinst'
2823 || $instdirs{$onelib}{$rcond} eq 'check')
2824 {
2825 # It's an EXTRA_ library, so we can't specify -rpath,
2826 # because we don't know where the library will end up.
2827 # The user probably knows, but generally speaking automake
2828 # doesn't -- and in fact configure could decide
2829 # dynamically between two different locations.
2830 $val = '';
2831 }
2832 else
2833 {
2834 $val = ('-rpath $(' . $instdirs{$onelib}{$rcond} . 'dir)');
2835 $val .= $instsubdirs{$onelib}{$rcond}
2836 if defined $instsubdirs{$onelib}{$rcond};
2837 }
2838 if ($rcond->true)
2839 {
2840 # If $rcond is true there is only one condition and
2841 # there is no point defining an helper variable.
2842 $rpath = $val;
2843 }
2844 else
2845 {
2846 define_pretty_variable ($rpathvar, $rcond, INTERNAL, $val);
2847 }
2848 }
2850 # If the resulting library lies into a subdirectory,
2851 # make sure this directory will exist.
2852 my $dirstamp = require_build_directory_maybe ($onelib);
2854 # Remember to cleanup .libs/ in this directory.
2855 my $dirname = dirname $onelib;
2856 $libtool_clean_directories{$dirname} = 1;
2858 $output_rules .= &file_contents ('ltlibrary',
2859 $where,
2860 LTLIBRARY => $onelib,
2861 XLTLIBRARY => $xlib,
2862 RPATH => $rpath,
2863 XLINK => $xlink,
2864 DIRSTAMP => $dirstamp);
2865 if ($seen_libobjs)
2866 {
2867 if (var ($xlib . '_LIBADD'))
2868 {
2869 &check_libobjs_sources ($xlib, $xlib . '_LIBADD');
2870 }
2871 }
2872 }
2873 }
2875 # See if any _SOURCES variable were misspelled.
2876 sub check_typos ()
2877 {
2878 # It is ok if the user sets this particular variable.
2879 set_seen 'AM_LDFLAGS';
2881 foreach my $primary ('SOURCES', 'LIBADD', 'LDADD', 'LDFLAGS', 'DEPENDENCIES')
2882 {
2883 foreach my $var (variables $primary)
2884 {
2885 my $varname = $var->name;
2886 # A configure variable is always legitimate.
2887 next if exists $configure_vars{$varname};
2889 for my $cond ($var->conditions->conds)
2890 {
2891 $varname =~ /^(?:nobase_)?(?:dist_|nodist_)?(.*)_[[:alnum:]]+$/;
2892 msg_var ('syntax', $var, "variable `$varname' is defined but no"
2893 . " program or\nlibrary has `$1' as canonic name"
2894 . " (possible typo)")
2895 unless $var->rdef ($cond)->seen;
2896 }
2897 }
2898 }
2899 }
2902 # Handle scripts.
2903 sub handle_scripts
2904 {
2905 # NOTE we no longer automatically clean SCRIPTS, because it is
2906 # useful to sometimes distribute scripts verbatim. This happens
2907 # e.g. in Automake itself.
2908 &am_install_var ('-candist', 'scripts', 'SCRIPTS',
2909 'bin', 'sbin', 'libexec', 'pkgdata',
2910 'noinst', 'check');
2911 }
2916 ## ------------------------ ##
2917 ## Handling Texinfo files. ##
2918 ## ------------------------ ##
2920 # ($OUTFILE, $VFILE, @CLEAN_FILES)
2921 # &scan_texinfo_file ($FILENAME)
2922 # ------------------------------
2923 # $OUTFILE - name of the info file produced by $FILENAME.
2924 # $VFILE - name of the version.texi file used (undef if none).
2925 # @CLEAN_FILES - list of byproducts (indexes etc.)
2926 sub scan_texinfo_file ($)
2927 {
2928 my ($filename) = @_;
2930 # Some of the following extensions are always created, no matter
2931 # whether indexes are used or not. Other (like cps, fns, ... pgs)
2932 # are only created when they are used. We used to scan $FILENAME
2933 # for their use, but that is not enough: they could be used in
2934 # included files. We can't scan included files because we don't
2935 # know the include path. Therefore we always erase these files, no
2936 # matter whether they are used or not.
2937 #
2938 # (tmp is only created if an @macro is used and a certain e-TeX
2939 # feature is not available.)
2940 my %clean_suffixes =
2941 map { $_ => 1 } (qw(aux log toc tmp
2942 cp cps
2943 fn fns
2944 ky kys
2945 vr vrs
2946 tp tps
2947 pg pgs)); # grep 'new.*index' texinfo.tex
2949 my $texi = new Automake::XFile "< $filename";
2950 verb "reading $filename";
2952 my ($outfile, $vfile);
2953 while ($_ = $texi->getline)
2954 {
2955 if (/^\@setfilename +(\S+)/)
2956 {
2957 # Honor only the first @setfilename. (It's possible to have
2958 # more occurrences later if the manual shows examples of how
2959 # to use @setfilename...)
2960 next if $outfile;
2962 $outfile = $1;
2963 if ($outfile =~ /\.([^.]+)$/ && $1 ne 'info')
2964 {
2965 error ("$filename:$.",
2966 "output `$outfile' has unrecognized extension");
2967 return;
2968 }
2969 }
2970 # A "version.texi" file is actually any file whose name matches
2971 # "vers*.texi".
2972 elsif (/^\@include\s+(vers[^.]*\.texi)\s*$/)
2973 {
2974 $vfile = $1;
2975 }
2977 # Try to find new or unused indexes.
2979 # Creating a new category of index.
2980 elsif (/^\@def(code)?index (\w+)/)
2981 {
2982 $clean_suffixes{$2} = 1;
2983 $clean_suffixes{"$2s"} = 1;
2984 }
2986 # Merging an index into an another.
2987 elsif (/^\@syn(code)?index (\w+) (\w+)/)
2988 {
2989 delete $clean_suffixes{"$2s"};
2990 $clean_suffixes{"$3s"} = 1;
2991 }
2993 }
2995 if (! $outfile)
2996 {
2997 err_am "`$filename' missing \@setfilename";
2998 return;
2999 }
3001 my $infobase = basename ($filename);
3002 $infobase =~ s/\.te?xi(nfo)?$//;
3003 return ($outfile, $vfile,
3004 map { "$infobase.$_" } (sort keys %clean_suffixes));
3005 }
3008 # ($DIRSTAMP, @CLEAN_FILES)
3009 # output_texinfo_build_rules ($SOURCE, $DEST, $INSRC, @DEPENDENCIES)
3010 # ------------------------------------------------------------------
3011 # SOURCE - the source Texinfo file
3012 # DEST - the destination Info file
3013 # INSRC - wether DEST should be built in the source tree
3014 # DEPENDENCIES - known dependencies
3015 sub output_texinfo_build_rules ($$$@)
3016 {
3017 my ($source, $dest, $insrc, @deps) = @_;
3019 # Split `a.texi' into `a' and `.texi'.
3020 my ($spfx, $ssfx) = ($source =~ /^(.*?)(\.[^.]*)?$/);
3021 my ($dpfx, $dsfx) = ($dest =~ /^(.*?)(\.[^.]*)?$/);
3023 $ssfx ||= "";
3024 $dsfx ||= "";
3026 # We can output two kinds of rules: the "generic" rules use Make
3027 # suffix rules and are appropriate when $source and $dest do not lie
3028 # in a sub-directory; the "specific" rules are needed in the other
3029 # case.
3030 #
3031 # The former are output only once (this is not really apparent here,
3032 # but just remember that some logic deeper in Automake will not
3033 # output the same rule twice); while the later need to be output for
3034 # each Texinfo source.
3035 my $generic;
3036 my $makeinfoflags;
3037 my $sdir = dirname $source;
3038 if ($sdir eq '.' && dirname ($dest) eq '.')
3039 {
3040 $generic = 1;
3041 $makeinfoflags = '-I $(srcdir)';
3042 }
3043 else
3044 {
3045 $generic = 0;
3046 $makeinfoflags = "-I $sdir -I \$(srcdir)/$sdir";
3047 }
3049 # A directory can contain two kinds of info files: some built in the
3050 # source tree, and some built in the build tree. The rules are
3051 # different in each case. However we cannot output two different
3052 # set of generic rules. Because in-source builds are more usual, we
3053 # use generic rules in this case and fall back to "specific" rules
3054 # for build-dir builds. (It should not be a problem to invert this
3055 # if needed.)
3056 $generic = 0 unless $insrc;
3058 # We cannot use a suffix rule to build info files with an empty
3059 # extension. Otherwise we would output a single suffix inference
3060 # rule, with separate dependencies, as in
3061 #
3062 # .texi:
3063 # $(MAKEINFO) ...
3064 # foo.info: foo.texi
3065 #
3066 # which confuse Solaris make. (See the Autoconf manual for
3067 # details.) Therefore we use a specific rule in this case. This
3068 # applies to info files only (dvi and pdf files always have an
3069 # extension).
3070 my $generic_info = ($generic && $dsfx) ? 1 : 0;
3072 # If the resulting file lie into a subdirectory,
3073 # make sure this directory will exist.
3074 my $dirstamp = require_build_directory_maybe ($dest);
3076 my $dipfx = ($insrc ? '$(srcdir)/' : '') . $dpfx;
3078 $output_rules .= file_contents ('texibuild',
3079 new Automake::Location,
3080 DEPS => "@deps",
3081 DEST_PREFIX => $dpfx,
3082 DEST_INFO_PREFIX => $dipfx,
3083 DEST_SUFFIX => $dsfx,
3084 DIRSTAMP => $dirstamp,
3085 GENERIC => $generic,
3086 GENERIC_INFO => $generic_info,
3087 INSRC => $insrc,
3088 MAKEINFOFLAGS => $makeinfoflags,
3089 SOURCE => ($generic
3090 ? '$<' : $source),
3091 SOURCE_INFO => ($generic_info
3092 ? '$<' : $source),
3093 SOURCE_REAL => $source,
3094 SOURCE_SUFFIX => $ssfx,
3095 );
3096 return ($dirstamp, "$dpfx.dvi", "$dpfx.pdf", "$dpfx.ps", "$dpfx.html");
3097 }
3100 # $TEXICLEANS
3101 # handle_texinfo_helper ($info_texinfos)
3102 # --------------------------------------
3103 # Handle all Texinfo source; helper for handle_texinfo.
3104 sub handle_texinfo_helper ($)
3105 {
3106 my ($info_texinfos) = @_;
3107 my (@infobase, @info_deps_list, @texi_deps);
3108 my %versions;
3109 my $done = 0;
3110 my @texi_cleans;
3112 # Build a regex matching user-cleaned files.
3113 my $d = var 'DISTCLEANFILES';
3114 my $c = var 'CLEANFILES';
3115 my @f = ();
3116 push @f, $d->value_as_list_recursive (inner_expand => 1) if $d;
3117 push @f, $c->value_as_list_recursive (inner_expand => 1) if $c;
3118 @f = map { s|[^A-Za-z_0-9*\[\]\-]|\\$&|g; s|\*|[^/]*|g; $_; } @f;
3119 my $user_cleaned_files = '^(?:' . join ('|', @f) . ')$';
3121 foreach my $texi
3122 ($info_texinfos->value_as_list_recursive (inner_expand => 1))
3123 {
3124 my $infobase = $texi;
3125 $infobase =~ s/\.(txi|texinfo|texi)$//;
3127 if ($infobase eq $texi)
3128 {
3129 # FIXME: report line number.
3130 err_am "texinfo file `$texi' has unrecognized extension";
3131 next;
3132 }
3134 push @infobase, $infobase;
3136 # If 'version.texi' is referenced by input file, then include
3137 # automatic versioning capability.
3138 my ($out_file, $vtexi, @clean_files) =
3139 scan_texinfo_file ("$relative_dir/$texi")
3140 or next;
3141 push (@texi_cleans, @clean_files);
3143 # If the Texinfo source is in a subdirectory, create the
3144 # resulting info in this subdirectory. If it is in the current
3145 # directory, try hard to not prefix "./" because it breaks the
3146 # generic rules.
3147 my $outdir = dirname ($texi) . '/';
3148 $outdir = "" if $outdir eq './';
3149 $out_file = $outdir . $out_file;
3151 # Until Automake 1.6.3, .info files were built in the
3152 # source tree. This was an obstacle to the support of
3153 # non-distributed .info files, and non-distributed .texi
3154 # files.
3155 #
3156 # * Non-distributed .texi files is important in some packages
3157 # where .texi files are built at make time, probably using
3158 # other binaries built in the package itself, maybe using
3159 # tools or information found on the build host. Because
3160 # these files are not distributed they are always rebuilt
3161 # at make time; they should therefore not lie in the source
3162 # directory. One plan was to support this using
3163 # nodist_info_TEXINFOS or something similar. (Doing this
3164 # requires some sanity checks. For instance Automake should
3165 # not allow:
3166 # dist_info_TEXINFOS = foo.texi
3167 # nodist_foo_TEXINFOS = included.texi
3168 # because a distributed file should never depend on a
3169 # non-distributed file.)
3170 #
3171 # * If .texi files are not distributed, then .info files should
3172 # not be distributed either. There are also cases where one
3173 # wants to distribute .texi files, but does not want to
3174 # distribute the .info files. For instance the Texinfo package
3175 # distributes the tool used to build these files; it would
3176 # be a waste of space to distribute them. It's not clear
3177 # which syntax we should use to indicate that .info files should
3178 # not be distributed. Akim Demaille suggested that eventually
3179 # we switch to a new syntax:
3180 # | Maybe we should take some inspiration from what's already
3181 # | done in the rest of Automake. Maybe there is too much
3182 # | syntactic sugar here, and you want
3183 # | nodist_INFO = bar.info
3184 # | dist_bar_info_SOURCES = bar.texi
3185 # | bar_texi_DEPENDENCIES = foo.texi
3186 # | with a bit of magic to have bar.info represent the whole
3187 # | bar*info set. That's a lot more verbose that the current
3188 # | situation, but it is # not new, hence the user has less
3189 # | to learn.
3190 # |
3191 # | But there is still too much room for meaningless specs:
3192 # | nodist_INFO = bar.info
3193 # | dist_bar_info_SOURCES = bar.texi
3194 # | dist_PS = bar.ps something-written-by-hand.ps
3195 # | nodist_bar_ps_SOURCES = bar.texi
3196 # | bar_texi_DEPENDENCIES = foo.texi
3197 # | here bar.texi is dist_ in line 2, and nodist_ in 4.
3198 #
3199 # Back to the point, it should be clear that in order to support
3200 # non-distributed .info files, we need to build them in the
3201 # build tree, not in the source tree (non-distributed .texi
3202 # files are less of a problem, because we do not output build
3203 # rules for them). In Automake 1.7 .info build rules have been
3204 # largely cleaned up so that .info files get always build in the
3205 # build tree, even when distributed. The idea was that
3206 # (1) if during a VPATH build the .info file was found to be
3207 # absent or out-of-date (in the source tree or in the
3208 # build tree), Make would rebuild it in the build tree.
3209 # If an up-to-date source-tree of the .info file existed,
3210 # make would not rebuild it in the build tree.
3211 # (2) having two copies of .info files, one in the source tree
3212 # and one (newer) in the build tree is not a problem
3213 # because `make dist' always pick files in the build tree
3214 # first.
3215 # However it turned out the be a bad idea for several reasons:
3216 # * Tru64, OpenBSD, and FreeBSD (not NetBSD) Make do not behave
3217 # like GNU Make on point (1) above. These implementations
3218 # of Make would always rebuild .info files in the build
3219 # tree, even if such files were up to date in the source
3220 # tree. Consequently, it was impossible to perform a VPATH
3221 # build of a package containing Texinfo files using these
3222 # Make implementations.
3223 # (Refer to the Autoconf Manual, section "Limitation of
3224 # Make", paragraph "VPATH", item "target lookup", for
3225 # an account of the differences between these
3226 # implementations.)
3227 # * The GNU Coding Standards require these files to be built
3228 # in the source-tree (when they are distributed, that is).
3229 # * Keeping a fresher copy of distributed files in the
3230 # build tree can be annoying during development because
3231 # - if the files is kept under CVS, you really want it
3232 # to be updated in the source tree
3233 # - it is confusing that `make distclean' does not erase
3234 # all files in the build tree.
3235 #
3236 # Consequently, starting with Automake 1.8, .info files are
3237 # built in the source tree again. Because we still plan to
3238 # support non-distributed .info files at some point, we
3239 # have a single variable ($INSRC) that controls whether
3240 # the current .info file must be built in the source tree
3241 # or in the build tree. Actually this variable is switched
3242 # off for .info files that appear to be cleaned; this is
3243 # for backward compatibility with package such as Texinfo,
3244 # which do things like
3245 # info_TEXINFOS = texinfo.txi info-stnd.texi info.texi
3246 # DISTCLEANFILES = texinfo texinfo-* info*.info*
3247 # # Do not create info files for distribution.
3248 # dist-info:
3249 # in order not to distribute .info files.
3250 my $insrc = ($out_file =~ $user_cleaned_files) ? 0 : 1;
3252 my $soutdir = '$(srcdir)/' . $outdir;
3253 $outdir = $soutdir if $insrc;
3255 # If user specified file_TEXINFOS, then use that as explicit
3256 # dependency list.
3257 @texi_deps = ();
3258 push (@texi_deps, "$soutdir$vtexi") if $vtexi;
3260 my $canonical = canonicalize ($infobase);
3261 if (var ($canonical . "_TEXINFOS"))
3262 {
3263 push (@texi_deps, '$(' . $canonical . '_TEXINFOS)');
3264 push_dist_common ('$(' . $canonical . '_TEXINFOS)');
3265 }
3267 my ($dirstamp, @cfiles) =
3268 output_texinfo_build_rules ($texi, $out_file, $insrc, @texi_deps);
3269 push (@texi_cleans, @cfiles);
3271 push (@info_deps_list, $out_file);
3273 # If a vers*.texi file is needed, emit the rule.
3274 if ($vtexi)
3275 {
3276 err_am ("`$vtexi', included in `$texi', "
3277 . "also included in `$versions{$vtexi}'")
3278 if defined $versions{$vtexi};
3279 $versions{$vtexi} = $texi;
3281 # We number the stamp-vti files. This is doable since the
3282 # actual names don't matter much. We only number starting
3283 # with the second one, so that the common case looks nice.
3284 my $vti = ($done ? $done : 'vti');
3285 ++$done;
3287 # This is ugly, but it is our historical practice.
3288 if ($config_aux_dir_set_in_configure_ac)
3289 {
3290 require_conf_file_with_macro (TRUE, 'info_TEXINFOS', FOREIGN,
3291 'mdate-sh');
3292 }
3293 else
3294 {
3295 require_file_with_macro (TRUE, 'info_TEXINFOS',
3296 FOREIGN, 'mdate-sh');
3297 }
3299 my $conf_dir;
3300 if ($config_aux_dir_set_in_configure_ac)
3301 {
3302 $conf_dir = "$am_config_aux_dir/";
3303 }
3304 else
3305 {
3306 $conf_dir = '$(srcdir)/';
3307 }
3308 $output_rules .= file_contents ('texi-vers',
3309 new Automake::Location,
3310 TEXI => $texi,
3311 VTI => $vti,
3312 STAMPVTI => "${soutdir}stamp-$vti",
3313 VTEXI => "$soutdir$vtexi",
3314 MDDIR => $conf_dir,
3315 DIRSTAMP => $dirstamp);
3316 }
3317 }
3319 # Handle location of texinfo.tex.
3320 my $need_texi_file = 0;
3321 my $texinfodir;
3322 if (var ('TEXINFO_TEX'))
3323 {
3324 # The user defined TEXINFO_TEX so assume he knows what he is
3325 # doing.
3326 $texinfodir = ('$(srcdir)/'
3327 . dirname (variable_value ('TEXINFO_TEX')));
3328 }
3329 elsif (option 'cygnus')
3330 {
3331 $texinfodir = '$(top_srcdir)/../texinfo';
3332 define_variable ('TEXINFO_TEX', "$texinfodir/texinfo.tex", INTERNAL);
3333 }
3334 elsif ($config_aux_dir_set_in_configure_ac)
3335 {
3336 $texinfodir = $am_config_aux_dir;
3337 define_variable ('TEXINFO_TEX', "$texinfodir/texinfo.tex", INTERNAL);
3338 $need_texi_file = 2; # so that we require_conf_file later
3339 }
3340 else
3341 {
3342 $texinfodir = '$(srcdir)';
3343 $need_texi_file = 1;
3344 }
3345 define_variable ('am__TEXINFO_TEX_DIR', $texinfodir, INTERNAL);
3347 push (@dist_targets, 'dist-info');
3349 if (! option 'no-installinfo')
3350 {
3351 # Make sure documentation is made and installed first. Use
3352 # $(INFO_DEPS), not 'info', because otherwise recursive makes
3353 # get run twice during "make all".
3354 unshift (@all, '$(INFO_DEPS)');
3355 }
3357 define_files_variable ("DVIS", @infobase, 'dvi', INTERNAL);
3358 define_files_variable ("PDFS", @infobase, 'pdf', INTERNAL);
3359 define_files_variable ("PSS", @infobase, 'ps', INTERNAL);
3360 define_files_variable ("HTMLS", @infobase, 'html', INTERNAL);
3362 # This next isn't strictly needed now -- the places that look here
3363 # could easily be changed to look in info_TEXINFOS. But this is
3364 # probably better, in case noinst_TEXINFOS is ever supported.
3365 define_variable ("TEXINFOS", variable_value ('info_TEXINFOS'), INTERNAL);
3367 # Do some error checking. Note that this file is not required
3368 # when in Cygnus mode; instead we defined TEXINFO_TEX explicitly
3369 # up above.
3370 if ($need_texi_file && ! option 'no-texinfo.tex')
3371 {
3372 if ($need_texi_file > 1)
3373 {
3374 require_conf_file_with_macro (TRUE, 'info_TEXINFOS', FOREIGN,
3375 'texinfo.tex');
3376 }
3377 else
3378 {
3379 require_file_with_macro (TRUE, 'info_TEXINFOS', FOREIGN,
3380 'texinfo.tex');
3381 }
3382 }
3384 return makefile_wrap ("", "\t ", @texi_cleans);
3385 }
3388 # handle_texinfo ()
3389 # -----------------
3390 # Handle all Texinfo source.
3391 sub handle_texinfo ()
3392 {
3393 reject_var 'TEXINFOS', "`TEXINFOS' is an anachronism; use `info_TEXINFOS'";
3394 # FIXME: I think this is an obsolete future feature name.
3395 reject_var 'html_TEXINFOS', "HTML generation not yet supported";
3397 my $info_texinfos = var ('info_TEXINFOS');
3398 my $texiclean = "";
3399 if ($info_texinfos)
3400 {
3401 $texiclean = handle_texinfo_helper ($info_texinfos);
3402 }
3403 $output_rules .= file_contents ('texinfos',
3404 new Automake::Location,
3405 TEXICLEAN => $texiclean,
3406 'LOCAL-TEXIS' => !!$info_texinfos);
3407 }
3410 # Handle any man pages.
3411 sub handle_man_pages
3412 {
3413 reject_var 'MANS', "`MANS' is an anachronism; use `man_MANS'";
3415 # Find all the sections in use. We do this by first looking for
3416 # "standard" sections, and then looking for any additional
3417 # sections used in man_MANS.
3418 my (%sections, %notrans_sections, %trans_sections,
3419 %notrans_vars, %trans_vars, %notrans_sect_vars, %trans_sect_vars);
3420 # We handle nodist_ for uniformity. man pages aren't distributed
3421 # by default so it isn't actually very important.
3422 foreach my $npfx ('', 'notrans_')
3423 {
3424 foreach my $pfx ('', 'dist_', 'nodist_')
3425 {
3426 # Add more sections as needed.
3427 foreach my $section ('0'..'9', 'n', 'l')
3428 {
3429 my $varname = $npfx . $pfx . 'man' . $section . '_MANS';
3430 if (var ($varname))
3431 {
3432 $sections{$section} = 1;
3433 $varname = '$(' . $varname . ')';
3434 if ($npfx eq 'notrans_')
3435 {
3436 $notrans_sections{$section} = 1;
3437 $notrans_sect_vars{$varname} = 1;
3438 }
3439 else
3440 {
3441 $trans_sections{$section} = 1;
3442 $trans_sect_vars{$varname} = 1;
3443 }
3445 &push_dist_common ($varname)
3446 if $pfx eq 'dist_';
3447 }
3448 }
3450 my $varname = $npfx . $pfx . 'man_MANS';
3451 my $var = var ($varname);
3452 if ($var)
3453 {
3454 foreach ($var->value_as_list_recursive)
3455 {
3456 # A page like `foo.1c' goes into man1dir.
3457 if (/\.([0-9a-z])([a-z]*)$/)
3458 {
3459 $sections{$1} = 1;
3460 if ($npfx eq 'notrans_')
3461 {
3462 $notrans_sections{$1} = 1;
3463 }
3464 else
3465 {
3466 $trans_sections{$1} = 1;
3467 }
3468 }
3469 }
3471 $varname = '$(' . $varname . ')';
3472 if ($npfx eq 'notrans_')
3473 {
3474 $notrans_vars{$varname} = 1;
3475 }
3476 else
3477 {
3478 $trans_vars{$varname} = 1;
3479 }
3480 &push_dist_common ($varname)
3481 if $pfx eq 'dist_';
3482 }
3483 }
3484 }
3486 return unless %sections;
3488 my @unsorted_deps;
3490 # Build section independent variables.
3491 my $have_notrans = %notrans_vars;
3492 my @notrans_list = sort keys %notrans_vars;
3493 my $have_trans = %trans_vars;
3494 my @trans_list = sort keys %trans_vars;
3496 # Now for each section, generate an install and uninstall rule.
3497 # Sort sections so output is deterministic.
3498 foreach my $section (sort keys %sections)
3499 {
3500 # Build section dependent variables.
3501 my $notrans_mans = $have_notrans || exists $notrans_sections{$section};
3502 my $trans_mans = $have_trans || exists $trans_sections{$section};
3503 my (%notrans_this_sect, %trans_this_sect);
3504 my $expr = 'man' . $section . '_MANS';
3505 foreach my $varname (keys %notrans_sect_vars)
3506 {
3507 if ($varname =~ /$expr/)
3508 {
3509 $notrans_this_sect{$varname} = 1;
3510 }
3511 }
3512 foreach my $varname (keys %trans_sect_vars)
3513 {
3514 if ($varname =~ /$expr/)
3515 {
3516 $trans_this_sect{$varname} = 1;
3517 }
3518 }
3519 my @notrans_sect_list = sort keys %notrans_this_sect;
3520 my @trans_sect_list = sort keys %trans_this_sect;
3521 @unsorted_deps = (keys %notrans_vars, keys %trans_vars,
3522 keys %notrans_this_sect, keys %trans_this_sect);
3523 my @deps = sort @unsorted_deps;
3524 $output_rules .= &file_contents ('mans',
3525 new Automake::Location,
3526 SECTION => $section,
3527 DEPS => "@deps",
3528 NOTRANS_MANS => $notrans_mans,
3529 NOTRANS_SECT_LIST => "@notrans_sect_list",
3530 HAVE_NOTRANS => $have_notrans,
3531 NOTRANS_LIST => "@notrans_list",
3532 TRANS_MANS => $trans_mans,
3533 TRANS_SECT_LIST => "@trans_sect_list",
3534 HAVE_TRANS => $have_trans,
3535 TRANS_LIST => "@trans_list");
3536 }
3538 @unsorted_deps = (keys %notrans_vars, keys %trans_vars,
3539 keys %notrans_sect_vars, keys %trans_sect_vars);
3540 my @mans = sort @unsorted_deps;
3541 $output_vars .= file_contents ('mans-vars',
3542 new Automake::Location,
3543 MANS => "@mans");
3545 push (@all, '$(MANS)')
3546 unless option 'no-installman';
3547 }
3549 # Handle DATA variables.
3550 sub handle_data
3551 {
3552 &am_install_var ('-noextra', '-candist', 'data', 'DATA',
3553 'data', 'dataroot', 'dvi', 'html', 'pdf', 'ps',
3554 'sysconf', 'sharedstate', 'localstate',
3555 'pkgdata', 'lisp', 'noinst', 'check');
3556 }
3558 # Handle TAGS.
3559 sub handle_tags
3560 {
3561 my @tag_deps = ();
3562 my @ctag_deps = ();
3563 if (var ('SUBDIRS'))
3564 {
3565 $output_rules .= ("tags-recursive:\n"
3566 . "\tlist=\'\$(SUBDIRS)\'; for subdir in \$\$list; do \\\n"
3567 # Never fail here if a subdir fails; it
3568 # isn't important.
3569 . "\t test \"\$\$subdir\" = . || (\$(am__cd) \$\$subdir"
3570 . " && \$(MAKE) \$(AM_MAKEFLAGS) tags); \\\n"
3571 . "\tdone\n");
3572 push (@tag_deps, 'tags-recursive');
3573 &depend ('.PHONY', 'tags-recursive');
3575 $output_rules .= ("ctags-recursive:\n"
3576 . "\tlist=\'\$(SUBDIRS)\'; for subdir in \$\$list; do \\\n"
3577 # Never fail here if a subdir fails; it
3578 # isn't important.
3579 . "\t test \"\$\$subdir\" = . || (\$(am__cd) \$\$subdir"
3580 . " && \$(MAKE) \$(AM_MAKEFLAGS) ctags); \\\n"
3581 . "\tdone\n");
3582 push (@ctag_deps, 'ctags-recursive');
3583 &depend ('.PHONY', 'ctags-recursive');
3584 }
3586 if (&saw_sources_p (1)
3587 || var ('ETAGS_ARGS')
3588 || @tag_deps)
3589 {
3590 my @config;
3591 foreach my $spec (@config_headers)
3592 {
3593 my ($out, @ins) = split_config_file_spec ($spec);
3594 foreach my $in (@ins)
3595 {
3596 # If the config header source is in this directory,
3597 # require it.
3598 push @config, basename ($in)
3599 if $relative_dir eq dirname ($in);
3600 }
3601 }
3602 $output_rules .= &file_contents ('tags',
3603 new Automake::Location,
3604 CONFIG => "@config",
3605 TAGSDIRS => "@tag_deps",
3606 CTAGSDIRS => "@ctag_deps");
3608 set_seen 'TAGS_DEPENDENCIES';
3609 }
3610 elsif (reject_var ('TAGS_DEPENDENCIES',
3611 "doesn't make sense to define `TAGS_DEPENDENCIES'"
3612 . "without\nsources or `ETAGS_ARGS'"))
3613 {
3614 }
3615 else
3616 {
3617 # Every Makefile must define some sort of TAGS rule.
3618 # Otherwise, it would be possible for a top-level "make TAGS"
3619 # to fail because some subdirectory failed.
3620 $output_rules .= "tags: TAGS\nTAGS:\n\n";
3621 # Ditto ctags.
3622 $output_rules .= "ctags: CTAGS\nCTAGS:\n\n";
3623 }
3624 }
3626 # Handle multilib support.
3627 sub handle_multilib
3628 {
3629 if ($seen_multilib && $relative_dir eq '.')
3630 {
3631 $output_rules .= &file_contents ('multilib', new Automake::Location);
3632 push (@all, 'all-multi');
3633 }
3634 }
3637 # user_phony_rule ($NAME)
3638 # -----------------------
3639 # Return false if rule $NAME does not exist. Otherwise,
3640 # declare it as phony, complete its definition (in case it is
3641 # conditional), and return its Automake::Rule instance.
3642 sub user_phony_rule ($)
3643 {
3644 my ($name) = @_;
3645 my $rule = rule $name;
3646 if ($rule)
3647 {
3648 depend ('.PHONY', $name);
3649 # Define $NAME in all condition where it is not already defined,
3650 # so that it is always OK to depend on $NAME.
3651 for my $c ($rule->not_always_defined_in_cond (TRUE)->conds)
3652 {
3653 Automake::Rule::define ($name, 'internal', RULE_AUTOMAKE,
3654 $c, INTERNAL);
3655 $output_rules .= $c->subst_string . "$name:\n";
3656 }
3657 }
3658 return $rule;
3659 }
3662 # $BOOLEAN
3663 # &for_dist_common ($A, $B)
3664 # -------------------------
3665 # Subroutine for &handle_dist: sort files to dist.
3666 #
3667 # We put README first because it then becomes easier to make a
3668 # Usenet-compliant shar file (in these, README must be first).
3669 #
3670 # FIXME: do more ordering of files here.
3671 sub for_dist_common
3672 {
3673 return 0
3674 if $a eq $b;
3675 return -1
3676 if $a eq 'README';
3677 return 1
3678 if $b eq 'README';
3679 return $a cmp $b;
3680 }
3682 # handle_dist
3683 # -----------
3684 # Handle 'dist' target.
3685 sub handle_dist ()
3686 {
3687 # Substitutions for distdir.am
3688 my %transform;
3690 # Define DIST_SUBDIRS. This must always be done, regardless of the
3691 # no-dist setting: target like `distclean' or `maintainer-clean' use it.
3692 my $subdirs = var ('SUBDIRS');
3693 if ($subdirs)
3694 {
3695 # If SUBDIRS is conditionally defined, then set DIST_SUBDIRS
3696 # to all possible directories, and use it. If DIST_SUBDIRS is
3697 # defined, just use it.
3699 # Note that we check DIST_SUBDIRS first on purpose, so that
3700 # we don't call has_conditional_contents for now reason.
3701 # (In the past one project used so many conditional subdirectories
3702 # that calling has_conditional_contents on SUBDIRS caused
3703 # automake to grow to 150Mb -- this should not happen with
3704 # the current implementation of has_conditional_contents,
3705 # but it's more efficient to avoid the call anyway.)
3706 if (var ('DIST_SUBDIRS'))
3707 {
3708 }
3709 elsif ($subdirs->has_conditional_contents)
3710 {
3711 define_pretty_variable
3712 ('DIST_SUBDIRS', TRUE, INTERNAL,
3713 uniq ($subdirs->value_as_list_recursive));
3714 }
3715 else
3716 {
3717 # We always define this because that is what `distclean'
3718 # wants.
3719 define_pretty_variable ('DIST_SUBDIRS', TRUE, INTERNAL,
3720 '$(SUBDIRS)');
3721 }
3722 }
3724 # The remaining definitions are only required when a dist target is used.
3725 return if option 'no-dist';
3727 # At least one of the archive formats must be enabled.
3728 if ($relative_dir eq '.')
3729 {
3730 my $archive_defined = option 'no-dist-gzip' ? 0 : 1;
3731 $archive_defined ||=
3732 grep { option "dist-$_" } qw(shar zip tarZ bzip2 lzma xz);
3733 error (option 'no-dist-gzip',
3734 "no-dist-gzip specified but no dist-* specified, "
3735 . "at least one archive format must be enabled")
3736 unless $archive_defined;
3737 }
3739 # Look for common files that should be included in distribution.
3740 # If the aux dir is set, and it does not have a Makefile.am, then
3741 # we check for these files there as well.
3742 my $check_aux = 0;
3743 if ($relative_dir eq '.'
3744 && $config_aux_dir_set_in_configure_ac)
3745 {
3746 if (! &is_make_dir ($config_aux_dir))
3747 {
3748 $check_aux = 1;
3749 }
3750 }
3751 foreach my $cfile (@common_files)
3752 {
3753 if (dir_has_case_matching_file ($relative_dir, $cfile)
3754 # The file might be absent, but if it can be built it's ok.
3755 || rule $cfile)
3756 {
3757 &push_dist_common ($cfile);
3758 }
3760 # Don't use `elsif' here because a file might meaningfully
3761 # appear in both directories.
3762 if ($check_aux && dir_has_case_matching_file ($config_aux_dir, $cfile))
3763 {
3764 &push_dist_common ("$config_aux_dir/$cfile")
3765 }
3766 }
3768 # We might copy elements from $configure_dist_common to
3769 # %dist_common if we think we need to. If the file appears in our
3770 # directory, we would have discovered it already, so we don't
3771 # check that. But if the file is in a subdir without a Makefile,
3772 # we want to distribute it here if we are doing `.'. Ugly!
3773 if ($relative_dir eq '.')
3774 {
3775 foreach my $file (split (' ' , $configure_dist_common))
3776 {
3777 push_dist_common ($file)
3778 unless is_make_dir (dirname ($file));
3779 }
3780 }
3782 # Files to distributed. Don't use ->value_as_list_recursive
3783 # as it recursively expands `$(dist_pkgdata_DATA)' etc.
3784 my @dist_common = split (' ', rvar ('DIST_COMMON')->variable_value);
3785 @dist_common = uniq (sort for_dist_common (@dist_common));
3786 variable_delete 'DIST_COMMON';
3787 define_pretty_variable ('DIST_COMMON', TRUE, INTERNAL, @dist_common);
3789 # Now that we've processed DIST_COMMON, disallow further attempts
3790 # to set it.
3791 $handle_dist_run = 1;
3793 # Scan EXTRA_DIST to see if we need to distribute anything from a
3794 # subdir. If so, add it to the list. I didn't want to do this
3795 # originally, but there were so many requests that I finally
3796 # relented.
3797 my $extra_dist = var ('EXTRA_DIST');
3799 $transform{'DISTCHECK-HOOK'} = !! rule 'distcheck-hook';
3800 $transform{'GETTEXT'} = $seen_gettext && !$seen_gettext_external;
3802 # If the target `dist-hook' exists, make sure it is run. This
3803 # allows users to do random weird things to the distribution
3804 # before it is packaged up.
3805 push (@dist_targets, 'dist-hook')
3806 if user_phony_rule 'dist-hook';
3807 $transform{'DIST-TARGETS'} = join (' ', @dist_targets);
3809 my $flm = option ('filename-length-max');
3810 my $filename_filter = $flm ? '.' x $flm->[1] : '';
3812 $output_rules .= &file_contents ('distdir',
3813 new Automake::Location,
3814 %transform,
3815 FILENAME_FILTER => $filename_filter);
3816 }
3819 # check_directory ($NAME, $WHERE)
3820 # -------------------------------
3821 # Ensure $NAME is a directory, and that it uses a sane name.
3822 # Use $WHERE as a location in the diagnostic, if any.
3823 sub check_directory ($$)
3824 {
3825 my ($dir, $where) = @_;
3827 error $where, "required directory $relative_dir/$dir does not exist"
3828 unless -d "$relative_dir/$dir";
3830 # If an `obj/' directory exists, BSD make will enter it before
3831 # reading `Makefile'. Hence the `Makefile' in the current directory
3832 # will not be read.
3833 #
3834 # % cat Makefile
3835 # all:
3836 # echo Hello
3837 # % cat obj/Makefile
3838 # all:
3839 # echo World
3840 # % make # GNU make
3841 # echo Hello
3842 # Hello
3843 # % pmake # BSD make
3844 # echo World
3845 # World
3846 msg ('portability', $where,
3847 "naming a subdirectory `obj' causes troubles with BSD make")
3848 if $dir eq 'obj';
3850 # `aux' is probably the most important of the following forbidden name,
3851 # since it's tempting to use it as an AC_CONFIG_AUX_DIR.
3852 msg ('portability', $where,
3853 "name `$dir' is reserved on W32 and DOS platforms")
3854 if grep (/^\Q$dir\E$/i, qw/aux lpt1 lpt2 lpt3 com1 com2 com3 com4 con prn/);
3855 }
3857 # check_directories_in_var ($VARIABLE)
3858 # ------------------------------------
3859 # Recursively check all items in variables $VARIABLE as directories
3860 sub check_directories_in_var ($)
3861 {
3862 my ($var) = @_;
3863 $var->traverse_recursively
3864 (sub
3865 {
3866 my ($var, $val, $cond, $full_cond) = @_;
3867 check_directory ($val, $var->rdef ($cond)->location);
3868 return ();
3869 },
3870 undef,
3871 skip_ac_subst => 1);
3872 }
3874 # &handle_subdirs ()
3875 # ------------------
3876 # Handle subdirectories.
3877 sub handle_subdirs ()
3878 {
3879 my $subdirs = var ('SUBDIRS');
3880 return
3881 unless $subdirs;
3883 check_directories_in_var $subdirs;
3885 my $dsubdirs = var ('DIST_SUBDIRS');
3886 check_directories_in_var $dsubdirs
3887 if $dsubdirs;
3889 $output_rules .= &file_contents ('subdirs', new Automake::Location);
3890 rvar ('RECURSIVE_TARGETS')->rdef (TRUE)->{'pretty'} = VAR_SORTED; # Gross!
3891 }
3894 # ($REGEN, @DEPENDENCIES)
3895 # &scan_aclocal_m4
3896 # ----------------
3897 # If aclocal.m4 creation is automated, return the list of its dependencies.
3898 sub scan_aclocal_m4 ()
3899 {
3900 my $regen_aclocal = 0;
3902 set_seen 'CONFIG_STATUS_DEPENDENCIES';
3903 set_seen 'CONFIGURE_DEPENDENCIES';
3905 if (-f 'aclocal.m4')
3906 {
3907 &define_variable ("ACLOCAL_M4", '$(top_srcdir)/aclocal.m4', INTERNAL);
3909 my $aclocal = new Automake::XFile "< aclocal.m4";
3910 my $line = $aclocal->getline;
3911 $regen_aclocal = $line =~ 'generated automatically by aclocal';
3912 }
3914 my @ac_deps = ();
3916 if (set_seen ('ACLOCAL_M4_SOURCES'))
3917 {
3918 push (@ac_deps, '$(ACLOCAL_M4_SOURCES)');
3919 msg_var ('obsolete', 'ACLOCAL_M4_SOURCES',
3920 "`ACLOCAL_M4_SOURCES' is obsolete.\n"
3921 . "It should be safe to simply remove it.");
3922 }
3924 # Note that it might be possible that aclocal.m4 doesn't exist but
3925 # should be auto-generated. This case probably isn't very
3926 # important.
3928 return ($regen_aclocal, @ac_deps);
3929 }
3932 # Helper function for substitute_ac_subst_variables.
3933 sub substitute_ac_subst_variables_worker($)
3934 {
3935 my ($token) = @_;
3936 return "\@$token\@" if var $token;
3937 return "\${$token\}";
3938 }
3940 # substitute_ac_subst_variables ($TEXT)
3941 # -------------------------------------
3942 # Replace any occurrence of ${FOO} in $TEXT by @FOO@ if FOO is an AC_SUBST
3943 # variable.
3944 sub substitute_ac_subst_variables ($)
3945 {
3946 my ($text) = @_;
3947 $text =~ s/\${([^ \t=:+{}]+)}/&substitute_ac_subst_variables_worker ($1)/ge;
3948 return $text;
3949 }
3951 # @DEPENDENCIES
3952 # &prepend_srcdir (@INPUTS)
3953 # -------------------------
3954 # Prepend $(srcdir) or $(top_srcdir) to all @INPUTS. The idea is that
3955 # if an input file has a directory part the same as the current
3956 # directory, then the directory part is simply replaced by $(srcdir).
3957 # But if the directory part is different, then $(top_srcdir) is
3958 # prepended.
3959 sub prepend_srcdir (@)
3960 {
3961 my (@inputs) = @_;
3962 my @newinputs;
3964 foreach my $single (@inputs)
3965 {
3966 if (dirname ($single) eq $relative_dir)
3967 {
3968 push (@newinputs, '$(srcdir)/' . basename ($single));
3969 }
3970 else
3971 {
3972 push (@newinputs, '$(top_srcdir)/' . $single);
3973 }
3974 }
3975 return @newinputs;
3976 }
3978 # @DEPENDENCIES
3979 # rewrite_inputs_into_dependencies ($OUTPUT, @INPUTS)
3980 # ---------------------------------------------------
3981 # Compute a list of dependencies appropriate for the rebuild
3982 # rule of
3983 # AC_CONFIG_FILES($OUTPUT:$INPUT[0]:$INPUTS[1]:...)
3984 # Also distribute $INPUTs which are not built by another AC_CONFIG_FOOS.
3985 sub rewrite_inputs_into_dependencies ($@)
3986 {
3987 my ($file, @inputs) = @_;
3988 my @res = ();
3990 for my $i (@inputs)
3991 {
3992 # We cannot create dependencies on shell variables.
3993 next if (substitute_ac_subst_variables $i) =~ /\$/;
3995 if (exists $ac_config_files_location{$i} && $i ne $file)
3996 {
3997 my $di = dirname $i;
3998 if ($di eq $relative_dir)
3999 {
4000 $i = basename $i;
4001 }
4002 # In the top-level Makefile we do not use $(top_builddir), because
4003 # we are already there, and since the targets are built without
4004 # a $(top_builddir), it helps BSD Make to match them with
4005 # dependencies.
4006 elsif ($relative_dir ne '.')
4007 {
4008 $i = '$(top_builddir)/' . $i;
4009 }
4010 }
4011 else
4012 {
4013 msg ('error', $ac_config_files_location{$file},
4014 "required file `$i' not found")
4015 unless $i =~ /\$/ || exists $output_files{$i} || -f $i;
4016 ($i) = prepend_srcdir ($i);
4017 push_dist_common ($i);
4018 }
4019 push @res, $i;
4020 }
4021 return @res;
4022 }
4026 # &handle_configure ($MAKEFILE_AM, $MAKEFILE_IN, $MAKEFILE, @INPUTS)
4027 # ------------------------------------------------------------------
4028 # Handle remaking and configure stuff.
4029 # We need the name of the input file, to do proper remaking rules.
4030 sub handle_configure ($$$@)
4031 {
4032 my ($makefile_am, $makefile_in, $makefile, @inputs) = @_;
4034 prog_error 'empty @inputs'
4035 unless @inputs;
4037 my ($rel_makefile_am, $rel_makefile_in) = prepend_srcdir ($makefile_am,
4038 $makefile_in);
4039 my $rel_makefile = basename $makefile;
4041 my $colon_infile = ':' . join (':', @inputs);
4042 $colon_infile = '' if $colon_infile eq ":$makefile.in";
4043 my @rewritten = rewrite_inputs_into_dependencies ($makefile, @inputs);
4044 my ($regen_aclocal_m4, @aclocal_m4_deps) = scan_aclocal_m4;
4045 define_pretty_variable ('am__aclocal_m4_deps', TRUE, INTERNAL,
4046 @configure_deps, @aclocal_m4_deps,
4047 '$(top_srcdir)/' . $configure_ac);
4048 my @configuredeps = ('$(am__aclocal_m4_deps)', '$(CONFIGURE_DEPENDENCIES)');
4049 push @configuredeps, '$(ACLOCAL_M4)' if -f 'aclocal.m4';
4050 define_pretty_variable ('am__configure_deps', TRUE, INTERNAL,
4051 @configuredeps);
4053 $output_rules .= file_contents
4054 ('configure',
4055 new Automake::Location,
4056 MAKEFILE => $rel_makefile,
4057 'MAKEFILE-DEPS' => "@rewritten",
4058 'CONFIG-MAKEFILE' => ($relative_dir eq '.') ? '$@' : '$(subdir)/$@',
4059 'MAKEFILE-IN' => $rel_makefile_in,
4060 'MAKEFILE-IN-DEPS' => "@include_stack",
4061 'MAKEFILE-AM' => $rel_makefile_am,
4062 STRICTNESS => global_option 'cygnus'
4063 ? 'cygnus' : $strictness_name,
4064 'USE-DEPS' => global_option 'no-dependencies'
4065 ? ' --ignore-deps' : '',
4066 'MAKEFILE-AM-SOURCES' => "$makefile$colon_infile",
4067 'REGEN-ACLOCAL-M4' => $regen_aclocal_m4);
4069 if ($relative_dir eq '.')
4070 {
4071 &push_dist_common ('acconfig.h')
4072 if -f 'acconfig.h';
4073 }
4075 # If we have a configure header, require it.
4076 my $hdr_index = 0;
4077 my @distclean_config;
4078 foreach my $spec (@config_headers)
4079 {
4080 $hdr_index += 1;
4081 # $CONFIG_H_PATH: config.h from top level.
4082 my ($config_h_path, @ins) = split_config_file_spec ($spec);
4083 my $config_h_dir = dirname ($config_h_path);
4085 # If the header is in the current directory we want to build
4086 # the header here. Otherwise, if we're at the topmost
4087 # directory and the header's directory doesn't have a
4088 # Makefile, then we also want to build the header.
4089 if ($relative_dir eq $config_h_dir
4090 || ($relative_dir eq '.' && ! &is_make_dir ($config_h_dir)))
4091 {
4092 my ($cn_sans_dir, $stamp_dir);
4093 if ($relative_dir eq $config_h_dir)
4094 {
4095 $cn_sans_dir = basename ($config_h_path);
4096 $stamp_dir = '';
4097 }
4098 else
4099 {
4100 $cn_sans_dir = $config_h_path;
4101 if ($config_h_dir eq '.')
4102 {
4103 $stamp_dir = '';
4104 }
4105 else
4106 {
4107 $stamp_dir = $config_h_dir . '/';
4108 }
4109 }
4111 # This will also distribute all inputs.
4112 @ins = rewrite_inputs_into_dependencies ($config_h_path, @ins);
4114 # Cannot define rebuild rules for filenames with shell variables.
4115 next if (substitute_ac_subst_variables $config_h_path) =~ /\$/;
4117 # Header defined in this directory.
4118 my @files;
4119 if (-f $config_h_path . '.top')
4120 {
4121 push (@files, "$cn_sans_dir.top");
4122 }
4123 if (-f $config_h_path . '.bot')
4124 {
4125 push (@files, "$cn_sans_dir.bot");
4126 }
4128 push_dist_common (@files);
4130 # For now, acconfig.h can only appear in the top srcdir.
4131 if (-f 'acconfig.h')
4132 {
4133 push (@files, '$(top_srcdir)/acconfig.h');
4134 }
4136 my $stamp = "${stamp_dir}stamp-h${hdr_index}";
4137 $output_rules .=
4138 file_contents ('remake-hdr',
4139 new Automake::Location,
4140 FILES => "@files",
4141 CONFIG_H => $cn_sans_dir,
4142 CONFIG_HIN => $ins[0],
4143 CONFIG_H_DEPS => "@ins",
4144 CONFIG_H_PATH => $config_h_path,
4145 STAMP => "$stamp");
4147 push @distclean_config, $cn_sans_dir, $stamp;
4148 }
4149 }
4151 $output_rules .= file_contents ('clean-hdr',
4152 new Automake::Location,
4153 FILES => "@distclean_config")
4154 if @distclean_config;
4156 # Distribute and define mkinstalldirs only if it is already present
4157 # in the package, for backward compatibility (some people may still
4158 # use $(mkinstalldirs)).
4159 my $mkidpath = "$config_aux_dir/mkinstalldirs";
4160 if (-f $mkidpath)
4161 {
4162 # Use require_file so that any existing script gets updated
4163 # by --force-missing.
4164 require_conf_file ($mkidpath, FOREIGN, 'mkinstalldirs');
4165 define_variable ('mkinstalldirs',
4166 "\$(SHELL) $am_config_aux_dir/mkinstalldirs", INTERNAL);
4167 }
4168 else
4169 {
4170 # Use $(install_sh), not $(MKDIR_P) because the latter requires
4171 # at least one argument, and $(mkinstalldirs) used to work
4172 # even without arguments (e.g. $(mkinstalldirs) $(conditional_dir)).
4173 define_variable ('mkinstalldirs', '$(install_sh) -d', INTERNAL);
4174 }
4176 reject_var ('CONFIG_HEADER',
4177 "`CONFIG_HEADER' is an anachronism; now determined "
4178 . "automatically\nfrom `$configure_ac'");
4180 my @config_h;
4181 foreach my $spec (@config_headers)
4182 {
4183 my ($out, @ins) = split_config_file_spec ($spec);
4184 # Generate CONFIG_HEADER define.
4185 if ($relative_dir eq dirname ($out))
4186 {
4187 push @config_h, basename ($out);
4188 }
4189 else
4190 {
4191 push @config_h, "\$(top_builddir)/$out";
4192 }
4193 }
4194 define_variable ("CONFIG_HEADER", "@config_h", INTERNAL)
4195 if @config_h;
4197 # Now look for other files in this directory which must be remade
4198 # by config.status, and generate rules for them.
4199 my @actual_other_files = ();
4200 # These get cleaned only in a VPATH build.
4201 my @actual_other_vpath_files = ();
4202 foreach my $lfile (@other_input_files)
4203 {
4204 my $file;
4205 my @inputs;
4206 if ($lfile =~ /^([^:]*):(.*)$/)
4207 {
4208 # This is the ":" syntax of AC_OUTPUT.
4209 $file = $1;
4210 @inputs = split (':', $2);
4211 }
4212 else
4213 {
4214 # Normal usage.
4215 $file = $lfile;
4216 @inputs = $file . '.in';
4217 }
4219 # Automake files should not be stored in here, but in %MAKE_LIST.
4220 prog_error ("$lfile in \@other_input_files\n"
4221 . "\@other_input_files = (@other_input_files)")
4222 if -f $file . '.am';
4224 my $local = basename ($file);
4226 # We skip files that aren't in this directory. However, if
4227 # the file's directory does not have a Makefile, and we are
4228 # currently doing `.', then we create a rule to rebuild the
4229 # file in the subdir.
4230 my $fd = dirname ($file);
4231 if ($fd ne $relative_dir)
4232 {
4233 if ($relative_dir eq '.' && ! &is_make_dir ($fd))
4234 {
4235 $local = $file;
4236 }
4237 else
4238 {
4239 next;
4240 }
4241 }
4243 my @rewritten_inputs = rewrite_inputs_into_dependencies ($file, @inputs);
4245 # Cannot output rules for shell variables.
4246 next if (substitute_ac_subst_variables $local) =~ /\$/;
4248 my $condstr = '';
4249 my $cond = $ac_config_files_condition{$lfile};
4250 if (defined $cond)
4251 {
4252 $condstr = $cond->subst_string;
4253 Automake::Rule::define ($local, $configure_ac, RULE_AUTOMAKE, $cond,
4254 $ac_config_files_location{$file});
4255 }
4256 $output_rules .= ($condstr . $local . ': '
4257 . '$(top_builddir)/config.status '
4258 . "@rewritten_inputs\n"
4259 . $condstr . "\t"
4260 . 'cd $(top_builddir) && '
4261 . '$(SHELL) ./config.status '
4262 . ($relative_dir eq '.' ? '' : '$(subdir)/')
4263 . '$@'
4264 . "\n");
4265 push (@actual_other_files, $local);
4266 }
4268 # For links we should clean destinations and distribute sources.
4269 foreach my $spec (@config_links)
4270 {
4271 my ($link, $file) = split /:/, $spec;
4272 # Some people do AC_CONFIG_LINKS($computed). We only handle
4273 # the DEST:SRC form.
4274 next unless $file;
4275 my $where = $ac_config_files_location{$link};
4277 # Skip destinations that contain shell variables.
4278 if ((substitute_ac_subst_variables $link) !~ /\$/)
4279 {
4280 # We skip links that aren't in this directory. However, if
4281 # the link's directory does not have a Makefile, and we are
4282 # currently doing `.', then we add the link to CONFIG_CLEAN_FILES
4283 # in `.'s Makefile.in.
4284 my $local = basename ($link);
4285 my $fd = dirname ($link);
4286 if ($fd ne $relative_dir)
4287 {
4288 if ($relative_dir eq '.' && ! &is_make_dir ($fd))
4289 {
4290 $local = $link;
4291 }
4292 else
4293 {
4294 $local = undef;
4295 }
4296 }
4297 if ($file ne $link)
4298 {
4299 push @actual_other_files, $local if $local;
4300 }
4301 else
4302 {
4303 push @actual_other_vpath_files, $local if $local;
4304 }
4305 }
4307 # Do not process sources that contain shell variables.
4308 if ((substitute_ac_subst_variables $file) !~ /\$/)
4309 {
4310 my $fd = dirname ($file);
4312 # We distribute files that are in this directory.
4313 # At the top-level (`.') we also distribute files whose
4314 # directory does not have a Makefile.
4315 if (($fd eq $relative_dir)
4316 || ($relative_dir eq '.' && ! &is_make_dir ($fd)))
4317 {
4318 # The following will distribute $file as a side-effect when
4319 # it is appropriate (i.e., when $file is not already an output).
4320 # We do not need the result, just the side-effect.
4321 rewrite_inputs_into_dependencies ($link, $file);
4322 }
4323 }
4324 }
4326 # These files get removed by "make distclean".
4327 define_pretty_variable ('CONFIG_CLEAN_FILES', TRUE, INTERNAL,
4328 @actual_other_files);
4329 define_pretty_variable ('CONFIG_CLEAN_VPATH_FILES', TRUE, INTERNAL,
4330 @actual_other_vpath_files);
4331 }
4333 # Handle C headers.
4334 sub handle_headers
4335 {
4336 my @r = &am_install_var ('-defaultdist', 'header', 'HEADERS', 'include',
4337 'oldinclude', 'pkginclude',
4338 'noinst', 'check');
4339 foreach (@r)
4340 {
4341 next unless $_->[1] =~ /\..*$/;
4342 &saw_extension ($&);
4343 }
4344 }
4346 sub handle_gettext
4347 {
4348 return if ! $seen_gettext || $relative_dir ne '.';
4350 my $subdirs = var 'SUBDIRS';
4352 if (! $subdirs)
4353 {
4354 err_ac "AM_GNU_GETTEXT used but SUBDIRS not defined";
4355 return;
4356 }
4358 # Perform some sanity checks to help users get the right setup.
4359 # We disable these tests when po/ doesn't exist in order not to disallow
4360 # unusual gettext setups.
4361 #
4362 # Bruno Haible:
4363 # | The idea is:
4364 # |
4365 # | 1) If a package doesn't have a directory po/ at top level, it
4366 # | will likely have multiple po/ directories in subpackages.
4367 # |
4368 # | 2) It is useful to warn for the absence of intl/ if AM_GNU_GETTEXT
4369 # | is used without 'external'. It is also useful to warn for the
4370 # | presence of intl/ if AM_GNU_GETTEXT([external]) is used. Both
4371 # | warnings apply only to the usual layout of packages, therefore
4372 # | they should both be disabled if no po/ directory is found at
4373 # | top level.
4375 if (-d 'po')
4376 {
4377 my @subdirs = $subdirs->value_as_list_recursive;
4379 msg_var ('syntax', $subdirs,
4380 "AM_GNU_GETTEXT used but `po' not in SUBDIRS")
4381 if ! grep ($_ eq 'po', @subdirs);
4383 # intl/ is not required when AM_GNU_GETTEXT is called with the
4384 # `external' option and AM_GNU_GETTEXT_INTL_SUBDIR is not called.
4385 msg_var ('syntax', $subdirs,
4386 "AM_GNU_GETTEXT used but `intl' not in SUBDIRS")
4387 if (! ($seen_gettext_external && ! $seen_gettext_intl)
4388 && ! grep ($_ eq 'intl', @subdirs));
4390 # intl/ should not be used with AM_GNU_GETTEXT([external]), except
4391 # if AM_GNU_GETTEXT_INTL_SUBDIR is called.
4392 msg_var ('syntax', $subdirs,
4393 "`intl' should not be in SUBDIRS when "
4394 . "AM_GNU_GETTEXT([external]) is used")
4395 if ($seen_gettext_external && ! $seen_gettext_intl
4396 && grep ($_ eq 'intl', @subdirs));
4397 }
4399 require_file ($ac_gettext_location, GNU, 'ABOUT-NLS');
4400 }
4402 # Handle footer elements.
4403 sub handle_footer
4404 {
4405 reject_rule ('.SUFFIXES',
4406 "use variable `SUFFIXES', not target `.SUFFIXES'");
4408 # Note: AIX 4.1 /bin/make will fail if any suffix rule appears
4409 # before .SUFFIXES. So we make sure that .SUFFIXES appears before
4410 # anything else, by sticking it right after the default: target.
4411 $output_header .= ".SUFFIXES:\n";
4412 my $suffixes = var 'SUFFIXES';
4413 my @suffixes = Automake::Rule::suffixes;
4414 if (@suffixes || $suffixes)
4415 {
4416 # Make sure SUFFIXES has unique elements. Sort them to ensure
4417 # the output remains consistent. However, $(SUFFIXES) is
4418 # always at the start of the list, unsorted. This is done
4419 # because make will choose rules depending on the ordering of
4420 # suffixes, and this lets the user have some control. Push
4421 # actual suffixes, and not $(SUFFIXES). Some versions of make
4422 # do not like variable substitutions on the .SUFFIXES line.
4423 my @user_suffixes = ($suffixes
4424 ? $suffixes->value_as_list_recursive : ());
4426 my %suffixes = map { $_ => 1 } @suffixes;
4427 delete @suffixes{@user_suffixes};
4429 $output_header .= (".SUFFIXES: "
4430 . join (' ', @user_suffixes, sort keys %suffixes)
4431 . "\n");
4432 }
4434 $output_trailer .= file_contents ('footer', new Automake::Location);
4435 }
4438 # Generate `make install' rules.
4439 sub handle_install ()
4440 {
4441 $output_rules .= &file_contents
4442 ('install',
4443 new Automake::Location,
4444 maybe_BUILT_SOURCES => (set_seen ('BUILT_SOURCES')
4445 ? (" \$(BUILT_SOURCES)\n"
4446 . "\t\$(MAKE) \$(AM_MAKEFLAGS)")
4447 : ''),
4448 'installdirs-local' => (user_phony_rule 'installdirs-local'
4449 ? ' installdirs-local' : ''),
4450 am__installdirs => variable_value ('am__installdirs') || '');
4451 }
4454 # Deal with all and all-am.
4455 sub handle_all ($)
4456 {
4457 my ($makefile) = @_;
4459 # Output `all-am'.
4461 # Put this at the beginning for the sake of non-GNU makes. This
4462 # is still wrong if these makes can run parallel jobs. But it is
4463 # right enough.
4464 unshift (@all, basename ($makefile));
4466 foreach my $spec (@config_headers)
4467 {
4468 my ($out, @ins) = split_config_file_spec ($spec);
4469 push (@all, basename ($out))
4470 if dirname ($out) eq $relative_dir;
4471 }
4473 # Install `all' hooks.
4474 push (@all, "all-local")
4475 if user_phony_rule "all-local";
4477 &pretty_print_rule ("all-am:", "\t\t", @all);
4478 &depend ('.PHONY', 'all-am', 'all');
4481 # Output `all'.
4483 my @local_headers = ();
4484 push @local_headers, '$(BUILT_SOURCES)'
4485 if var ('BUILT_SOURCES');
4486 foreach my $spec (@config_headers)
4487 {
4488 my ($out, @ins) = split_config_file_spec ($spec);
4489 push @local_headers, basename ($out)
4490 if dirname ($out) eq $relative_dir;
4491 }
4493 if (@local_headers)
4494 {
4495 # We need to make sure config.h is built before we recurse.
4496 # We also want to make sure that built sources are built
4497 # before any ordinary `all' targets are run. We can't do this
4498 # by changing the order of dependencies to the "all" because
4499 # that breaks when using parallel makes. Instead we handle
4500 # things explicitly.
4501 $output_all .= ("all: @local_headers"
4502 . "\n\t"
4503 . '$(MAKE) $(AM_MAKEFLAGS) '
4504 . (var ('SUBDIRS') ? 'all-recursive' : 'all-am')
4505 . "\n\n");
4506 }
4507 else
4508 {
4509 $output_all .= "all: " . (var ('SUBDIRS')
4510 ? 'all-recursive' : 'all-am') . "\n\n";
4511 }
4512 }
4515 # &do_check_merge_target ()
4516 # -------------------------
4517 # Handle check merge target specially.
4518 sub do_check_merge_target ()
4519 {
4520 # Include user-defined local form of target.
4521 push @check_tests, 'check-local'
4522 if user_phony_rule 'check-local';
4524 # In --cygnus mode, check doesn't depend on all.
4525 if (option 'cygnus')
4526 {
4527 # Just run the local check rules.
4528 pretty_print_rule ('check-am:', "\t\t", @check);
4529 }
4530 else
4531 {
4532 # The check target must depend on the local equivalent of
4533 # `all', to ensure all the primary targets are built. Then it
4534 # must build the local check rules.
4535 $output_rules .= "check-am: all-am\n";
4536 pretty_print_rule ("\t\$(MAKE) \$(AM_MAKEFLAGS)", "\t ",
4537 @check)
4538 if @check;
4539 }
4540 pretty_print_rule ("\t\$(MAKE) \$(AM_MAKEFLAGS)", "\t ",
4541 @check_tests)
4542 if @check_tests;
4544 depend '.PHONY', 'check', 'check-am';
4545 # Handle recursion. We have to honor BUILT_SOURCES like for `all:'.
4546 $output_rules .= ("check: "
4547 . (var ('BUILT_SOURCES')
4548 ? "\$(BUILT_SOURCES)\n\t\$(MAKE) \$(AM_MAKEFLAGS) "
4549 : '')
4550 . (var ('SUBDIRS') ? 'check-recursive' : 'check-am')
4551 . "\n");
4552 }
4554 # handle_clean ($MAKEFILE)
4555 # ------------------------
4556 # Handle all 'clean' targets.
4557 sub handle_clean ($)
4558 {
4559 my ($makefile) = @_;
4561 # Clean the files listed in user variables if they exist.
4562 $clean_files{'$(MOSTLYCLEANFILES)'} = MOSTLY_CLEAN
4563 if var ('MOSTLYCLEANFILES');
4564 $clean_files{'$(CLEANFILES)'} = CLEAN
4565 if var ('CLEANFILES');
4566 $clean_files{'$(DISTCLEANFILES)'} = DIST_CLEAN
4567 if var ('DISTCLEANFILES');
4568 $clean_files{'$(MAINTAINERCLEANFILES)'} = MAINTAINER_CLEAN
4569 if var ('MAINTAINERCLEANFILES');
4571 # Built sources are automatically removed by maintainer-clean.
4572 $clean_files{'$(BUILT_SOURCES)'} = MAINTAINER_CLEAN
4573 if var ('BUILT_SOURCES');
4575 # Compute a list of "rm"s to run for each target.
4576 my %rms = (MOSTLY_CLEAN, [],
4577 CLEAN, [],
4578 DIST_CLEAN, [],
4579 MAINTAINER_CLEAN, []);
4581 foreach my $file (keys %clean_files)
4582 {
4583 my $when = $clean_files{$file};
4584 prog_error 'invalid entry in %clean_files'
4585 unless exists $rms{$when};
4587 my $rm = "rm -f $file";
4588 # If file is a variable, make sure when don't call `rm -f' without args.
4589 $rm ="test -z \"$file\" || $rm"
4590 if ($file =~ /^\s*\$(\(.*\)|\{.*\})\s*$/);
4592 push @{$rms{$when}}, "\t-$rm\n";
4593 }
4595 $output_rules .= &file_contents
4596 ('clean',
4597 new Automake::Location,
4598 MOSTLYCLEAN_RMS => join ('', sort @{$rms{&MOSTLY_CLEAN}}),
4599 CLEAN_RMS => join ('', sort @{$rms{&CLEAN}}),
4600 DISTCLEAN_RMS => join ('', sort @{$rms{&DIST_CLEAN}}),
4601 MAINTAINER_CLEAN_RMS => join ('', sort @{$rms{&MAINTAINER_CLEAN}}),
4602 MAKEFILE => basename $makefile,
4603 );
4604 }
4607 # &target_cmp ($A, $B)
4608 # --------------------
4609 # Subroutine for &handle_factored_dependencies to let `.PHONY' and
4610 # other `.TARGETS' be last.
4611 sub target_cmp
4612 {
4613 return 0 if $a eq $b;
4615 my $a1 = substr ($a, 0, 1);
4616 my $b1 = substr ($b, 0, 1);
4617 if ($a1 ne $b1)
4618 {
4619 return -1 if $b1 eq '.';
4620 return 1 if $a1 eq '.';
4621 }
4622 return $a cmp $b;
4623 }
4626 # &handle_factored_dependencies ()
4627 # --------------------------------
4628 # Handle everything related to gathered targets.
4629 sub handle_factored_dependencies
4630 {
4631 # Reject bad hooks.
4632 foreach my $utarg ('uninstall-data-local', 'uninstall-data-hook',
4633 'uninstall-exec-local', 'uninstall-exec-hook',
4634 'uninstall-dvi-local',
4635 'uninstall-html-local',
4636 'uninstall-info-local',
4637 'uninstall-pdf-local',
4638 'uninstall-ps-local')
4639 {
4640 my $x = $utarg;
4641 $x =~ s/-.*-/-/;
4642 reject_rule ($utarg, "use `$x', not `$utarg'");
4643 }
4645 reject_rule ('install-local',
4646 "use `install-data-local' or `install-exec-local', "
4647 . "not `install-local'");
4649 reject_rule ('install-hook',
4650 "use `install-data-hook' or `install-exec-hook', "
4651 . "not `install-hook'");
4653 # Install the -local hooks.
4654 foreach (keys %dependencies)
4655 {
4656 # Hooks are installed on the -am targets.
4657 s/-am$// or next;
4658 depend ("$_-am", "$_-local")
4659 if user_phony_rule "$_-local";
4660 }
4662 # Install the -hook hooks.
4663 # FIXME: Why not be as liberal as we are with -local hooks?
4664 foreach ('install-exec', 'install-data', 'uninstall')
4665 {
4666 if (user_phony_rule "$_-hook")
4667 {
4668 depend ('.MAKE', "$_-am");
4669 register_action("$_-am",
4670 ("\t\@\$(NORMAL_INSTALL)\n"
4671 . "\t\$(MAKE) \$(AM_MAKEFLAGS) $_-hook"));
4672 }
4673 }
4675 # All the required targets are phony.
4676 depend ('.PHONY', keys %required_targets);
4678 # Actually output gathered targets.
4679 foreach (sort target_cmp keys %dependencies)
4680 {
4681 # If there is nothing about this guy, skip it.
4682 next
4683 unless (@{$dependencies{$_}}
4684 || $actions{$_}
4685 || $required_targets{$_});
4687 # Define gathered targets in undefined conditions.
4688 # FIXME: Right now we must handle .PHONY as an exception,
4689 # because people write things like
4690 # .PHONY: myphonytarget
4691 # to append dependencies. This would not work if Automake
4692 # refrained from defining its own .PHONY target as it does
4693 # with other overridden targets.
4694 # Likewise for `.MAKE'.
4695 my @undefined_conds = (TRUE,);
4696 if ($_ ne '.PHONY' && $_ ne '.MAKE')
4697 {
4698 @undefined_conds =
4699 Automake::Rule::define ($_, 'internal',
4700 RULE_AUTOMAKE, TRUE, INTERNAL);
4701 }
4702 my @uniq_deps = uniq (sort @{$dependencies{$_}});
4703 foreach my $cond (@undefined_conds)
4704 {
4705 my $condstr = $cond->subst_string;
4706 &pretty_print_rule ("$condstr$_:", "$condstr\t", @uniq_deps);
4707 $output_rules .= $actions{$_} if defined $actions{$_};
4708 $output_rules .= "\n";
4709 }
4710 }
4711 }
4714 # &handle_tests_dejagnu ()
4715 # ------------------------
4716 sub handle_tests_dejagnu
4717 {
4718 push (@check_tests, 'check-DEJAGNU');
4719 $output_rules .= file_contents ('dejagnu', new Automake::Location);
4720 }
4723 # Handle TESTS variable and other checks.
4724 sub handle_tests
4725 {
4726 if (option 'dejagnu')
4727 {
4728 &handle_tests_dejagnu;
4729 }
4730 else
4731 {
4732 foreach my $c ('DEJATOOL', 'RUNTEST', 'RUNTESTFLAGS')
4733 {
4734 reject_var ($c, "`$c' defined but `dejagnu' not in "
4735 . "`AUTOMAKE_OPTIONS'");
4736 }
4737 }
4739 if (var ('TESTS'))
4740 {
4741 push (@check_tests, 'check-TESTS');
4742 $output_rules .= &file_contents ('check', new Automake::Location,
4743 COLOR => !! option 'color-tests');
4745 # Tests that are known programs should have $(EXEEXT) appended.
4746 # For matching purposes, we need to adjust XFAIL_TESTS as well.
4747 append_exeext { exists $known_programs{$_[0]} } 'TESTS';
4748 append_exeext { exists $known_programs{$_[0]} } 'XFAIL_TESTS'
4749 if (var ('XFAIL_TESTS'));
4750 }
4751 }
4753 # Handle Emacs Lisp.
4754 sub handle_emacs_lisp
4755 {
4756 my @elfiles = &am_install_var ('-candist', 'lisp', 'LISP',
4757 'lisp', 'noinst');
4759 return if ! @elfiles;
4761 define_pretty_variable ('am__ELFILES', TRUE, INTERNAL,
4762 map { $_->[1] } @elfiles);
4763 define_pretty_variable ('am__ELCFILES', TRUE, INTERNAL,
4764 '$(am__ELFILES:.el=.elc)');
4765 # This one can be overridden by users.
4766 define_pretty_variable ('ELCFILES', TRUE, INTERNAL, '$(LISP:.el=.elc)');
4768 push @all, '$(ELCFILES)';
4770 require_variables ($elfiles[0][0], "Emacs Lisp sources seen", TRUE,
4771 'EMACS', 'lispdir');
4772 require_conf_file ($elfiles[0][0], FOREIGN, 'elisp-comp');
4773 &define_variable ('elisp_comp', "$am_config_aux_dir/elisp-comp", INTERNAL);
4774 }
4776 # Handle Python
4777 sub handle_python
4778 {
4779 my @pyfiles = &am_install_var ('-defaultdist', 'python', 'PYTHON',
4780 'noinst');
4781 return if ! @pyfiles;
4783 require_variables ($pyfiles[0][0], "Python sources seen", TRUE, 'PYTHON');
4784 require_conf_file ($pyfiles[0][0], FOREIGN, 'py-compile');
4785 &define_variable ('py_compile', "$am_config_aux_dir/py-compile", INTERNAL);
4786 }
4788 # Handle Java.
4789 sub handle_java
4790 {
4791 my @sourcelist = &am_install_var ('-candist',
4792 'java', 'JAVA',
4793 'java', 'noinst', 'check');
4794 return if ! @sourcelist;
4796 my @prefix = am_primary_prefixes ('JAVA', 1,
4797 'java', 'noinst', 'check');
4799 my $dir;
4800 foreach my $curs (@prefix)
4801 {
4802 next
4803 if $curs eq 'EXTRA';
4805 err_var "${curs}_JAVA", "multiple _JAVA primaries in use"
4806 if defined $dir;
4807 $dir = $curs;
4808 }
4811 push (@all, 'class' . $dir . '.stamp');
4812 }
4815 # Handle some of the minor options.
4816 sub handle_minor_options
4817 {
4818 if (option 'readme-alpha')
4819 {
4820 if ($relative_dir eq '.')
4821 {
4822 if ($package_version !~ /^$GNITS_VERSION_PATTERN$/)
4823 {
4824 msg ('error-gnits', $package_version_location,
4825 "version `$package_version' doesn't follow " .
4826 "Gnits standards");
4827 }
4828 if (defined $1 && -f 'README-alpha')
4829 {
4830 # This means we have an alpha release. See
4831 # GNITS_VERSION_PATTERN for details.
4832 push_dist_common ('README-alpha');
4833 }
4834 }
4835 }
4836 }
4838 ################################################################
4840 # ($OUTPUT, @INPUTS)
4841 # &split_config_file_spec ($SPEC)
4842 # -------------------------------
4843 # Decode the Autoconf syntax for config files (files, headers, links
4844 # etc.).
4845 sub split_config_file_spec ($)
4846 {
4847 my ($spec) = @_;
4848 my ($output, @inputs) = split (/:/, $spec);
4850 push @inputs, "$output.in"
4851 unless @inputs;
4853 return ($output, @inputs);
4854 }
4856 # $input
4857 # locate_am (@POSSIBLE_SOURCES)
4858 # -----------------------------
4859 # AC_CONFIG_FILES allow specifications such as Makefile:top.in:mid.in:bot.in
4860 # This functions returns the first *.in file for which a *.am exists.
4861 # It returns undef otherwise.
4862 sub locate_am (@)
4863 {
4864 my (@rest) = @_;
4865 my $input;
4866 foreach my $file (@rest)
4867 {
4868 if (($file =~ /^(.*)\.in$/) && -f "$1.am")
4869 {
4870 $input = $file;
4871 last;
4872 }
4873 }
4874 return $input;
4875 }
4877 my %make_list;
4879 # &scan_autoconf_config_files ($WHERE, $CONFIG-FILES)
4880 # ---------------------------------------------------
4881 # Study $CONFIG-FILES which is the first argument to AC_CONFIG_FILES
4882 # (or AC_OUTPUT).
4883 sub scan_autoconf_config_files ($$)
4884 {
4885 my ($where, $config_files) = @_;
4887 # Look at potential Makefile.am's.
4888 foreach (split ' ', $config_files)
4889 {
4890 # Must skip empty string for Perl 4.
4891 next if $_ eq "\\" || $_ eq '';
4893 # Handle $local:$input syntax.
4894 my ($local, @rest) = split (/:/);
4895 @rest = ("$local.in",) unless @rest;
4896 msg ('portability', $where,
4897 "Omit leading `./' from config file names such as `$local',"
4898 . "\nas not all make implementations treat `file' and `./file' equally.")
4899 if ($local =~ /^\.\//);
4900 my $input = locate_am @rest;
4901 if ($input)
4902 {
4903 # We have a file that automake should generate.
4904 $make_list{$input} = join (':', ($local, @rest));
4905 }
4906 else
4907 {
4908 # We have a file that automake should cause to be
4909 # rebuilt, but shouldn't generate itself.
4910 push (@other_input_files, $_);
4911 }
4912 $ac_config_files_location{$local} = $where;
4913 $ac_config_files_condition{$local} =
4914 new Automake::Condition (@cond_stack)
4915 if (@cond_stack);
4916 }
4917 }
4920 # &scan_autoconf_traces ($FILENAME)
4921 # ---------------------------------
4922 sub scan_autoconf_traces ($)
4923 {
4924 my ($filename) = @_;
4926 # Macros to trace, with their minimal number of arguments.
4927 #
4928 # IMPORTANT: If you add a macro here, you should also add this macro
4929 # ========= to Automake-preselection in autoconf/lib/autom4te.in.
4930 my %traced = (
4931 AC_CANONICAL_BUILD => 0,
4932 AC_CANONICAL_HOST => 0,
4933 AC_CANONICAL_TARGET => 0,
4934 AC_CONFIG_AUX_DIR => 1,
4935 AC_CONFIG_FILES => 1,
4936 AC_CONFIG_HEADERS => 1,
4937 AC_CONFIG_LIBOBJ_DIR => 1,
4938 AC_CONFIG_LINKS => 1,
4939 AC_FC_SRCEXT => 1,
4940 AC_INIT => 0,
4941 AC_LIBSOURCE => 1,
4942 AC_REQUIRE_AUX_FILE => 1,
4943 AC_SUBST_TRACE => 1,
4944 AM_AUTOMAKE_VERSION => 1,
4945 AM_CONDITIONAL => 2,
4946 AM_ENABLE_MULTILIB => 0,
4947 AM_GNU_GETTEXT => 0,
4948 AM_GNU_GETTEXT_INTL_SUBDIR => 0,
4949 AM_INIT_AUTOMAKE => 0,
4950 AM_MAINTAINER_MODE => 0,
4951 AM_PROG_CC_C_O => 0,
4952 _AM_SUBST_NOTMAKE => 1,
4953 _AM_COND_IF => 1,
4954 _AM_COND_ELSE => 1,
4955 _AM_COND_ENDIF => 1,
4956 LT_SUPPORTED_TAG => 1,
4957 _LT_AC_TAGCONFIG => 0,
4958 m4_include => 1,
4959 m4_sinclude => 1,
4960 sinclude => 1,
4961 );
4963 my $traces = ($ENV{AUTOCONF} || 'autoconf') . " ";
4965 # Use a separator unlikely to be used, not `:', the default, which
4966 # has a precise meaning for AC_CONFIG_FILES and so on.
4967 $traces .= join (' ',
4968 map { "--trace=$_" . ':\$f:\$l::\$d::\$n::\${::}%' }
4969 (keys %traced));
4971 my $tracefh = new Automake::XFile ("$traces $filename |");
4972 verb "reading $traces";
4974 @cond_stack = ();
4975 my $where;
4977 while ($_ = $tracefh->getline)
4978 {
4979 chomp;
4980 my ($here, $depth, @args) = split (/::/);
4981 $where = new Automake::Location $here;
4982 my $macro = $args[0];
4984 prog_error ("unrequested trace `$macro'")
4985 unless exists $traced{$macro};
4987 # Skip and diagnose malformed calls.
4988 if ($#args < $traced{$macro})
4989 {
4990 msg ('syntax', $where, "not enough arguments for $macro");
4991 next;
4992 }
4994 # Alphabetical ordering please.
4995 if ($macro eq 'AC_CANONICAL_BUILD')
4996 {
4997 if ($seen_canonical <= AC_CANONICAL_BUILD)
4998 {
4999 $seen_canonical = AC_CANONICAL_BUILD;
5000 $canonical_location = $where;
5001 }
5002 }
5003 elsif ($macro eq 'AC_CANONICAL_HOST')
5004 {
5005 if ($seen_canonical <= AC_CANONICAL_HOST)
5006 {
5007 $seen_canonical = AC_CANONICAL_HOST;
5008 $canonical_location = $where;
5009 }
5010 }
5011 elsif ($macro eq 'AC_CANONICAL_TARGET')
5012 {
5013 $seen_canonical = AC_CANONICAL_TARGET;
5014 $canonical_location = $where;
5015 }
5016 elsif ($macro eq 'AC_CONFIG_AUX_DIR')
5017 {
5018 if ($seen_init_automake)
5019 {
5020 error ($where, "AC_CONFIG_AUX_DIR must be called before "
5021 . "AM_INIT_AUTOMAKE...", partial => 1);
5022 error ($seen_init_automake, "... AM_INIT_AUTOMAKE called here");
5023 }
5024 $config_aux_dir = $args[1];
5025 $config_aux_dir_set_in_configure_ac = 1;
5026 $relative_dir = '.';
5027 check_directory ($config_aux_dir, $where);
5028 }
5029 elsif ($macro eq 'AC_CONFIG_FILES')
5030 {
5031 # Look at potential Makefile.am's.
5032 scan_autoconf_config_files ($where, $args[1]);
5033 }
5034 elsif ($macro eq 'AC_CONFIG_HEADERS')
5035 {
5036 foreach my $spec (split (' ', $args[1]))
5037 {
5038 my ($dest, @src) = split (':', $spec);
5039 $ac_config_files_location{$dest} = $where;
5040 push @config_headers, $spec;
5041 }
5042 }
5043 elsif ($macro eq 'AC_CONFIG_LIBOBJ_DIR')
5044 {
5045 $config_libobj_dir = $args[1];
5046 $relative_dir = '.';
5047 check_directory ($config_libobj_dir, $where);
5048 }
5049 elsif ($macro eq 'AC_CONFIG_LINKS')
5050 {
5051 foreach my $spec (split (' ', $args[1]))
5052 {
5053 my ($dest, $src) = split (':', $spec);
5054 $ac_config_files_location{$dest} = $where;
5055 push @config_links, $spec;
5056 }
5057 }
5058 elsif ($macro eq 'AC_FC_SRCEXT')
5059 {
5060 my $suffix = $args[1];
5061 # These flags are used as %SOURCEFLAG% in depend2.am,
5062 # where the trailing space is important.
5063 $sourceflags{'.' . $suffix} = '$(FCFLAGS_' . $suffix . ') '
5064 if ($suffix eq 'f90' || $suffix eq 'f95' || $suffix eq 'f03' || $suffix eq 'f08');
5065 }
5066 elsif ($macro eq 'AC_INIT')
5067 {
5068 if (defined $args[2])
5069 {
5070 $package_version = $args[2];
5071 $package_version_location = $where;
5072 }
5073 }
5074 elsif ($macro eq 'AC_LIBSOURCE')
5075 {
5076 $libsources{$args[1]} = $here;
5077 }
5078 elsif ($macro eq 'AC_REQUIRE_AUX_FILE')
5079 {
5080 # Only remember the first time a file is required.
5081 $required_aux_file{$args[1]} = $where
5082 unless exists $required_aux_file{$args[1]};
5083 }
5084 elsif ($macro eq 'AC_SUBST_TRACE')
5085 {
5086 # Just check for alphanumeric in AC_SUBST_TRACE. If you do
5087 # AC_SUBST(5), then too bad.
5088 $configure_vars{$args[1]} = $where
5089 if $args[1] =~ /^\w+$/;
5090 }
5091 elsif ($macro eq 'AM_AUTOMAKE_VERSION')
5092 {
5093 error ($where,
5094 "version mismatch. This is Automake $VERSION,\n" .
5095 "but the definition used by this AM_INIT_AUTOMAKE\n" .
5096 "comes from Automake $args[1]. You should recreate\n" .
5097 "aclocal.m4 with aclocal and run automake again.\n",
5098 # $? = 63 is used to indicate version mismatch to missing.
5099 exit_code => 63)
5100 if $VERSION ne $args[1];
5102 $seen_automake_version = 1;
5103 }
5104 elsif ($macro eq 'AM_CONDITIONAL')
5105 {
5106 $configure_cond{$args[1]} = $where;
5107 }
5108 elsif ($macro eq 'AM_ENABLE_MULTILIB')
5109 {
5110 $seen_multilib = $where;
5111 }
5112 elsif ($macro eq 'AM_GNU_GETTEXT')
5113 {
5114 $seen_gettext = $where;
5115 $ac_gettext_location = $where;
5116 $seen_gettext_external = grep ($_ eq 'external', @args);
5117 }
5118 elsif ($macro eq 'AM_GNU_GETTEXT_INTL_SUBDIR')
5119 {
5120 $seen_gettext_intl = $where;
5121 }
5122 elsif ($macro eq 'AM_INIT_AUTOMAKE')
5123 {
5124 $seen_init_automake = $where;
5125 if (defined $args[2])
5126 {
5127 $package_version = $args[2];
5128 $package_version_location = $where;
5129 }
5130 elsif (defined $args[1])
5131 {
5132 exit $exit_code
5133 if (process_global_option_list ($where,
5134 split (' ', $args[1])));
5135 }
5136 }
5137 elsif ($macro eq 'AM_MAINTAINER_MODE')
5138 {
5139 $seen_maint_mode = $where;
5140 }
5141 elsif ($macro eq 'AM_PROG_CC_C_O')
5142 {
5143 $seen_cc_c_o = $where;
5144 }
5145 elsif ($macro eq '_AM_COND_IF')
5146 {
5147 cond_stack_if ('', $args[1], $where);
5148 error ($where, "missing m4 quoting, macro depth $depth")
5149 if ($depth != 1);
5150 }
5151 elsif ($macro eq '_AM_COND_ELSE')
5152 {
5153 cond_stack_else ('!', $args[1], $where);
5154 error ($where, "missing m4 quoting, macro depth $depth")
5155 if ($depth != 1);
5156 }
5157 elsif ($macro eq '_AM_COND_ENDIF')
5158 {
5159 cond_stack_endif (undef, undef, $where);
5160 error ($where, "missing m4 quoting, macro depth $depth")
5161 if ($depth != 1);
5162 }
5163 elsif ($macro eq '_AM_SUBST_NOTMAKE')
5164 {
5165 $ignored_configure_vars{$args[1]} = $where;
5166 }
5167 elsif ($macro eq 'm4_include'
5168 || $macro eq 'm4_sinclude'
5169 || $macro eq 'sinclude')
5170 {
5171 # Skip missing `sinclude'd files.
5172 next if $macro ne 'm4_include' && ! -f $args[1];
5174 # Some modified versions of Autoconf don't use
5175 # frozen files. Consequently it's possible that we see all
5176 # m4_include's performed during Autoconf's startup.
5177 # Obviously we don't want to distribute Autoconf's files
5178 # so we skip absolute filenames here.
5179 push @configure_deps, '$(top_srcdir)/' . $args[1]
5180 unless $here =~ m,^(?:\w:)?[\\/],;
5181 # Keep track of the greatest timestamp.
5182 if (-e $args[1])
5183 {
5184 my $mtime = mtime $args[1];
5185 $configure_deps_greatest_timestamp = $mtime
5186 if $mtime > $configure_deps_greatest_timestamp;
5187 }
5188 }
5189 elsif ($macro eq 'LT_SUPPORTED_TAG')
5190 {
5191 $libtool_tags{$args[1]} = 1;
5192 $libtool_new_api = 1;
5193 }
5194 elsif ($macro eq '_LT_AC_TAGCONFIG')
5195 {
5196 # _LT_AC_TAGCONFIG is an old macro present in Libtool 1.5.
5197 # We use it to detect whether tags are supported. Our
5198 # preferred interface is LT_SUPPORTED_TAG, but it was
5199 # introduced in Libtool 1.6.
5200 if (0 == keys %libtool_tags)
5201 {
5202 # Hardcode the tags supported by Libtool 1.5.
5203 %libtool_tags = (CC => 1, CXX => 1, GCJ => 1, F77 => 1);
5204 }
5205 }
5206 }
5208 error ($where, "condition stack not properly closed")
5209 if (@cond_stack);
5211 $tracefh->close;
5212 }
5215 # &scan_autoconf_files ()
5216 # -----------------------
5217 # Check whether we use `configure.ac' or `configure.in'.
5218 # Scan it (and possibly `aclocal.m4') for interesting things.
5219 # We must scan aclocal.m4 because there might be AC_SUBSTs and such there.
5220 sub scan_autoconf_files ()
5221 {
5222 # Reinitialize libsources here. This isn't really necessary,
5223 # since we currently assume there is only one configure.ac. But
5224 # that won't always be the case.
5225 %libsources = ();
5227 # Keep track of the youngest configure dependency.
5228 $configure_deps_greatest_timestamp = mtime $configure_ac;
5229 if (-e 'aclocal.m4')
5230 {
5231 my $mtime = mtime 'aclocal.m4';
5232 $configure_deps_greatest_timestamp = $mtime
5233 if $mtime > $configure_deps_greatest_timestamp;
5234 }
5236 scan_autoconf_traces ($configure_ac);
5238 @configure_input_files = sort keys %make_list;
5239 # Set input and output files if not specified by user.
5240 if (! @input_files)
5241 {
5242 @input_files = @configure_input_files;
5243 %output_files = %make_list;
5244 }
5247 if (! $seen_init_automake)
5248 {
5249 err_ac ("no proper invocation of AM_INIT_AUTOMAKE was found.\nYou "
5250 . "should verify that $configure_ac invokes AM_INIT_AUTOMAKE,"
5251 . "\nthat aclocal.m4 is present in the top-level directory,\n"
5252 . "and that aclocal.m4 was recently regenerated "
5253 . "(using aclocal).");
5254 }
5255 else
5256 {
5257 if (! $seen_automake_version)
5258 {
5259 if (-f 'aclocal.m4')
5260 {
5261 error ($seen_init_automake,
5262 "your implementation of AM_INIT_AUTOMAKE comes from " .
5263 "an\nold Automake version. You should recreate " .
5264 "aclocal.m4\nwith aclocal and run automake again.\n",
5265 # $? = 63 is used to indicate version mismatch to missing.
5266 exit_code => 63);
5267 }
5268 else
5269 {
5270 error ($seen_init_automake,
5271 "no proper implementation of AM_INIT_AUTOMAKE was " .
5272 "found,\nprobably because aclocal.m4 is missing...\n" .
5273 "You should run aclocal to create this file, then\n" .
5274 "run automake again.\n");
5275 }
5276 }
5277 }
5279 locate_aux_dir ();
5281 # Reorder @input_files so that the Makefile that distributes aux
5282 # files is processed last. This is important because each directory
5283 # can require auxiliary scripts and we should wait until they have
5284 # been installed before distributing them.
5286 # The Makefile.in that distribute the aux files is the one in
5287 # $config_aux_dir or the top-level Makefile.
5288 my $auxdirdist = is_make_dir ($config_aux_dir) ? $config_aux_dir : '.';
5289 my @new_input_files = ();
5290 while (@input_files)
5291 {
5292 my $in = pop @input_files;
5293 my @ins = split (/:/, $output_files{$in});
5294 if (dirname ($ins[0]) eq $auxdirdist)
5295 {
5296 push @new_input_files, $in;
5297 $automake_will_process_aux_dir = 1;
5298 }
5299 else
5300 {
5301 unshift @new_input_files, $in;
5302 }
5303 }
5304 @input_files = @new_input_files;
5306 # If neither the auxdir/Makefile nor the ./Makefile are generated
5307 # by Automake, we won't distribute the aux files anyway. Assume
5308 # the user know what (s)he does, and pretend we will distribute
5309 # them to disable the error in require_file_internal.
5310 $automake_will_process_aux_dir = 1 if ! is_make_dir ($auxdirdist);
5312 # Look for some files we need. Always check for these. This
5313 # check must be done for every run, even those where we are only
5314 # looking at a subdir Makefile. We must set relative_dir for
5315 # maybe_push_required_file to work.
5316 # Sort the files for stable verbose output.
5317 $relative_dir = '.';
5318 foreach my $file (sort keys %required_aux_file)
5319 {
5320 require_conf_file ($required_aux_file{$file}->get, FOREIGN, $file)
5321 }
5322 err_am "`install.sh' is an anachronism; use `install-sh' instead"
5323 if -f $config_aux_dir . '/install.sh';
5325 # Preserve dist_common for later.
5326 $configure_dist_common = variable_value ('DIST_COMMON') || '';
5328 }
5330 ################################################################
5332 # Set up for Cygnus mode.
5333 sub check_cygnus
5334 {
5335 my $cygnus = option 'cygnus';
5336 return unless $cygnus;
5338 set_strictness ('foreign');
5339 set_option ('no-installinfo', $cygnus);
5340 set_option ('no-dependencies', $cygnus);
5341 set_option ('no-dist', $cygnus);
5343 err_ac "`AM_MAINTAINER_MODE' required when --cygnus specified"
5344 if !$seen_maint_mode;
5345 }
5347 # Do any extra checking for GNU standards.
5348 sub check_gnu_standards
5349 {
5350 if ($relative_dir eq '.')
5351 {
5352 # In top level (or only) directory.
5353 require_file ("$am_file.am", GNU,
5354 qw/INSTALL NEWS README AUTHORS ChangeLog/);
5356 # Accept one of these three licenses; default to COPYING.
5357 # Make sure we do not overwrite an existing license.
5358 my $license;
5359 foreach (qw /COPYING COPYING.LIB COPYING.LESSER/)
5360 {
5361 if (-f $_)
5362 {
5363 $license = $_;
5364 last;
5365 }
5366 }
5367 require_file ("$am_file.am", GNU, 'COPYING')
5368 unless $license;
5369 }
5371 for my $opt ('no-installman', 'no-installinfo')
5372 {
5373 msg ('error-gnu', option $opt,
5374 "option `$opt' disallowed by GNU standards")
5375 if option $opt;
5376 }
5377 }
5379 # Do any extra checking for GNITS standards.
5380 sub check_gnits_standards
5381 {
5382 if ($relative_dir eq '.')
5383 {
5384 # In top level (or only) directory.
5385 require_file ("$am_file.am", GNITS, 'THANKS');
5386 }
5387 }
5389 ################################################################
5390 #
5391 # Functions to handle files of each language.
5393 # Each `lang_X_rewrite($DIRECTORY, $BASE, $EXT)' function follows a
5394 # simple formula: Return value is LANG_SUBDIR if the resulting object
5395 # file should be in a subdir if the source file is, LANG_PROCESS if
5396 # file is to be dealt with, LANG_IGNORE otherwise.
5398 # Much of the actual processing is handled in
5399 # handle_single_transform. These functions exist so that
5400 # auxiliary information can be recorded for a later cleanup pass.
5401 # Note that the calls to these functions are computed, so don't bother
5402 # searching for their precise names in the source.
5404 # This is just a convenience function that can be used to determine
5405 # when a subdir object should be used.
5406 sub lang_sub_obj
5407 {
5408 return option 'subdir-objects' ? LANG_SUBDIR : LANG_PROCESS;
5409 }
5411 # Rewrite a single C source file.
5412 sub lang_c_rewrite
5413 {
5414 my ($directory, $base, $ext, $nonansi_obj, $have_per_exec_flags, $var) = @_;
5416 if (option 'ansi2knr' && $base =~ /_$/)
5417 {
5418 # FIXME: include line number in error.
5419 err_am "C source file `$base.c' would be deleted by ansi2knr rules";
5420 }
5422 my $r = LANG_PROCESS;
5423 if (option 'subdir-objects')
5424 {
5425 $r = LANG_SUBDIR;
5426 if ($directory && $directory ne '.')
5427 {
5428 $base = $directory . '/' . $base;
5430 # libtool is always able to put the object at the proper place,
5431 # so we do not have to require AM_PROG_CC_C_O when building .lo files.
5432 msg_var ('portability', $var,
5433 "compiling `$base.c' in subdir requires "
5434 . "`AM_PROG_CC_C_O' in `$configure_ac'",
5435 uniq_scope => US_GLOBAL,
5436 uniq_part => 'AM_PROG_CC_C_O subdir')
5437 unless $seen_cc_c_o || $nonansi_obj eq '.lo';
5438 }
5440 # In this case we already have the directory information, so
5441 # don't add it again.
5442 $de_ansi_files{$base} = '';
5443 }
5444 else
5445 {
5446 $de_ansi_files{$base} = (($directory eq '.' || $directory eq '')
5447 ? ''
5448 : "$directory/");
5449 }
5451 if (! $seen_cc_c_o
5452 && $have_per_exec_flags
5453 && ! option 'subdir-objects'
5454 && $nonansi_obj ne '.lo')
5455 {
5456 msg_var ('portability',
5457 $var, "compiling `$base.c' with per-target flags requires "
5458 . "`AM_PROG_CC_C_O' in `$configure_ac'",
5459 uniq_scope => US_GLOBAL,
5460 uniq_part => 'AM_PROG_CC_C_O per-target')
5461 }
5463 return $r;
5464 }
5466 # Rewrite a single C++ source file.
5467 sub lang_cxx_rewrite
5468 {
5469 return &lang_sub_obj;
5470 }
5472 # Rewrite a single header file.
5473 sub lang_header_rewrite
5474 {
5475 # Header files are simply ignored.
5476 return LANG_IGNORE;
5477 }
5479 # Rewrite a single yacc file.
5480 sub lang_yacc_rewrite
5481 {
5482 my ($directory, $base, $ext) = @_;
5484 my $r = &lang_sub_obj;
5485 (my $newext = $ext) =~ tr/y/c/;
5486 return ($r, $newext);
5487 }
5489 # Rewrite a single yacc++ file.
5490 sub lang_yaccxx_rewrite
5491 {
5492 my ($directory, $base, $ext) = @_;
5494 my $r = &lang_sub_obj;
5495 (my $newext = $ext) =~ tr/y/c/;
5496 return ($r, $newext);
5497 }
5499 # Rewrite a single lex file.
5500 sub lang_lex_rewrite
5501 {
5502 my ($directory, $base, $ext) = @_;
5504 my $r = &lang_sub_obj;
5505 (my $newext = $ext) =~ tr/l/c/;
5506 return ($r, $newext);
5507 }
5509 # Rewrite a single lex++ file.
5510 sub lang_lexxx_rewrite
5511 {
5512 my ($directory, $base, $ext) = @_;
5514 my $r = &lang_sub_obj;
5515 (my $newext = $ext) =~ tr/l/c/;
5516 return ($r, $newext);
5517 }
5519 # Rewrite a single assembly file.
5520 sub lang_asm_rewrite
5521 {
5522 return &lang_sub_obj;
5523 }
5525 # Rewrite a single preprocessed assembly file.
5526 sub lang_cppasm_rewrite
5527 {
5528 return &lang_sub_obj;
5529 }
5531 # Rewrite a single Fortran 77 file.
5532 sub lang_f77_rewrite
5533 {
5534 return &lang_sub_obj;
5535 }
5537 # Rewrite a single Fortran file.
5538 sub lang_fc_rewrite
5539 {
5540 return &lang_sub_obj;
5541 }
5543 # Rewrite a single preprocessed Fortran file.
5544 sub lang_ppfc_rewrite
5545 {
5546 return &lang_sub_obj;
5547 }
5549 # Rewrite a single preprocessed Fortran 77 file.
5550 sub lang_ppf77_rewrite
5551 {
5552 return &lang_sub_obj;
5553 }
5555 # Rewrite a single ratfor file.
5556 sub lang_ratfor_rewrite
5557 {
5558 return &lang_sub_obj;
5559 }
5561 # Rewrite a single Objective C file.
5562 sub lang_objc_rewrite
5563 {
5564 return &lang_sub_obj;
5565 }
5567 # Rewrite a single Unified Parallel C file.
5568 sub lang_upc_rewrite
5569 {
5570 return &lang_sub_obj;
5571 }
5573 # Rewrite a single Java file.
5574 sub lang_java_rewrite
5575 {
5576 return LANG_SUBDIR;
5577 }
5579 # The lang_X_finish functions are called after all source file
5580 # processing is done. Each should handle defining rules for the
5581 # language, etc. A finish function is only called if a source file of
5582 # the appropriate type has been seen.
5584 sub lang_c_finish
5585 {
5586 # Push all libobjs files onto de_ansi_files. We actually only
5587 # push files which exist in the current directory, and which are
5588 # genuine source files.
5589 foreach my $file (keys %libsources)
5590 {
5591 if ($file =~ /^(.*)\.[cly]$/ && -f "$relative_dir/$file")
5592 {
5593 $de_ansi_files{$1} = ''
5594 }
5595 }
5597 if (option 'ansi2knr' && keys %de_ansi_files)
5598 {
5599 # Make all _.c files depend on their corresponding .c files.
5600 my @objects;
5601 foreach my $base (sort keys %de_ansi_files)
5602 {
5603 # Each _.c file must depend on ansi2knr; otherwise it
5604 # might be used in a parallel build before it is built.
5605 # We need to support files in the srcdir and in the build
5606 # dir (because these files might be auto-generated. But
5607 # we can't use $< -- some makes only define $< during a
5608 # suffix rule.
5609 my $ansfile = $de_ansi_files{$base} . $base . '.c';
5610 $output_rules .= ($base . "_.c: $ansfile \$(ANSI2KNR)\n\t"
5611 . '$(CPP) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS) $(CPPFLAGS) '
5612 . '`if test -f $(srcdir)/' . $ansfile
5613 . '; then echo $(srcdir)/' . $ansfile
5614 . '; else echo ' . $ansfile . '; fi` '
5615 . "| sed 's/^# \\([0-9]\\)/#line \\1/' "
5616 . '| $(ANSI2KNR) > $@'
5617 # If ansi2knr fails then we shouldn't
5618 # create the _.c file
5619 . " || rm -f \$\@\n");
5620 push (@objects, $base . '_.$(OBJEXT)');
5621 push (@objects, $base . '_.lo')
5622 if var ('LIBTOOL');
5624 # Explicitly clean the _.c files if they are in a
5625 # subdirectory. (In the current directory they get erased
5626 # by a `rm -f *_.c' rule.)
5627 $clean_files{$base . '_.c'} = MOSTLY_CLEAN
5628 if dirname ($base) ne '.';
5629 }
5631 # Make all _.o (and _.lo) files depend on ansi2knr.
5632 # Use a sneaky little hack to make it print nicely.
5633 &pretty_print_rule ('', '', @objects, ':', '$(ANSI2KNR)');
5634 }
5635 }
5637 # This is a yacc helper which is called whenever we have decided to
5638 # compile a yacc file.
5639 sub lang_yacc_target_hook
5640 {
5641 my ($self, $aggregate, $output, $input, %transform) = @_;
5643 my $flag = $aggregate . "_YFLAGS";
5644 my $flagvar = var $flag;
5645 my $YFLAGSvar = var 'YFLAGS';
5646 if (($flagvar && $flagvar->variable_value =~ /$DASH_D_PATTERN/o)
5647 || ($YFLAGSvar && $YFLAGSvar->variable_value =~ /$DASH_D_PATTERN/o))
5648 {
5649 (my $output_base = $output) =~ s/$KNOWN_EXTENSIONS_PATTERN$//;
5650 my $header = $output_base . '.h';
5652 # Found a `-d' that applies to the compilation of this file.
5653 # Add a dependency for the generated header file, and arrange
5654 # for that file to be included in the distribution.
5655 foreach my $cond (Automake::Rule::define (${header}, 'internal',
5656 RULE_AUTOMAKE, TRUE,
5657 INTERNAL))
5658 {
5659 my $condstr = $cond->subst_string;
5660 $output_rules .=
5661 "$condstr${header}: $output\n"
5662 # Recover from removal of $header
5663 . "$condstr\t\@if test ! -f \$@; then \\\n"
5664 . "$condstr\t rm -f $output; \\\n"
5665 . "$condstr\t \$(MAKE) \$(AM_MAKEFLAGS) $output; \\\n"
5666 . "$condstr\telse :; fi\n";
5667 }
5668 # Distribute the generated file, unless its .y source was
5669 # listed in a nodist_ variable. (&handle_source_transform
5670 # will set DIST_SOURCE.)
5671 &push_dist_common ($header)
5672 if $transform{'DIST_SOURCE'};
5674 # If the files are built in the build directory, then we want
5675 # to remove them with `make clean'. If they are in srcdir
5676 # they shouldn't be touched. However, we can't determine this
5677 # statically, and the GNU rules say that yacc/lex output files
5678 # should be removed by maintainer-clean. So that's what we
5679 # do.
5680 $clean_files{$header} = MAINTAINER_CLEAN;
5681 }
5682 # Erase $OUTPUT on `make maintainer-clean' (by GNU standards).
5683 # See the comment above for $HEADER.
5684 $clean_files{$output} = MAINTAINER_CLEAN;
5685 }
5687 # This is a lex helper which is called whenever we have decided to
5688 # compile a lex file.
5689 sub lang_lex_target_hook
5690 {
5691 my ($self, $aggregate, $output, $input) = @_;
5692 # If the files are built in the build directory, then we want to
5693 # remove them with `make clean'. If they are in srcdir they
5694 # shouldn't be touched. However, we can't determine this
5695 # statically, and the GNU rules say that yacc/lex output files
5696 # should be removed by maintainer-clean. So that's what we do.
5697 $clean_files{$output} = MAINTAINER_CLEAN;
5698 }
5700 # This is a helper for both lex and yacc.
5701 sub yacc_lex_finish_helper
5702 {
5703 return if defined $language_scratch{'lex-yacc-done'};
5704 $language_scratch{'lex-yacc-done'} = 1;
5706 # FIXME: for now, no line number.
5707 require_conf_file ($configure_ac, FOREIGN, 'ylwrap');
5708 &define_variable ('YLWRAP', "$am_config_aux_dir/ylwrap", INTERNAL);
5709 }
5711 sub lang_yacc_finish
5712 {
5713 return if defined $language_scratch{'yacc-done'};
5714 $language_scratch{'yacc-done'} = 1;
5716 reject_var 'YACCFLAGS', "`YACCFLAGS' obsolete; use `YFLAGS' instead";
5718 yacc_lex_finish_helper;
5719 }
5722 sub lang_lex_finish
5723 {
5724 return if defined $language_scratch{'lex-done'};
5725 $language_scratch{'lex-done'} = 1;
5727 yacc_lex_finish_helper;
5728 }
5731 # Given a hash table of linker names, pick the name that has the most
5732 # precedence. This is lame, but something has to have global
5733 # knowledge in order to eliminate the conflict. Add more linkers as
5734 # required.
5735 sub resolve_linker
5736 {
5737 my (%linkers) = @_;
5739 foreach my $l (qw(GCJLINK CXXLINK F77LINK FCLINK OBJCLINK UPCLINK))
5740 {
5741 return $l if defined $linkers{$l};
5742 }
5743 return 'LINK';
5744 }
5746 # Called to indicate that an extension was used.
5747 sub saw_extension
5748 {
5749 my ($ext) = @_;
5750 if (! defined $extension_seen{$ext})
5751 {
5752 $extension_seen{$ext} = 1;
5753 }
5754 else
5755 {
5756 ++$extension_seen{$ext};
5757 }
5758 }
5760 # Return the number of files seen for a given language. Knows about
5761 # special cases we care about. FIXME: this is hideous. We need
5762 # something that involves real language objects. For instance yacc
5763 # and yaccxx could both derive from a common yacc class which would
5764 # know about the strange ylwrap requirement. (Or better yet we could
5765 # just not support legacy yacc!)
5766 sub count_files_for_language
5767 {
5768 my ($name) = @_;
5770 my @names;
5771 if ($name eq 'yacc' || $name eq 'yaccxx')
5772 {
5773 @names = ('yacc', 'yaccxx');
5774 }
5775 elsif ($name eq 'lex' || $name eq 'lexxx')
5776 {
5777 @names = ('lex', 'lexxx');
5778 }
5779 else
5780 {
5781 @names = ($name);
5782 }
5784 my $r = 0;
5785 foreach $name (@names)
5786 {
5787 my $lang = $languages{$name};
5788 foreach my $ext (@{$lang->extensions})
5789 {
5790 $r += $extension_seen{$ext}
5791 if defined $extension_seen{$ext};
5792 }
5793 }
5795 return $r
5796 }
5798 # Called to ask whether source files have been seen . If HEADERS is 1,
5799 # headers can be included.
5800 sub saw_sources_p
5801 {
5802 my ($headers) = @_;
5804 # count all the sources
5805 my $count = 0;
5806 foreach my $val (values %extension_seen)
5807 {
5808 $count += $val;
5809 }
5811 if (!$headers)
5812 {
5813 $count -= count_files_for_language ('header');
5814 }
5816 return $count > 0;
5817 }
5820 # register_language (%ATTRIBUTE)
5821 # ------------------------------
5822 # Register a single language.
5823 # Each %ATTRIBUTE is of the form ATTRIBUTE => VALUE.
5824 sub register_language (%)
5825 {
5826 my (%option) = @_;
5828 # Set the defaults.
5829 $option{'ansi'} = 0
5830 unless defined $option{'ansi'};
5831 $option{'autodep'} = 'no'
5832 unless defined $option{'autodep'};
5833 $option{'linker'} = ''
5834 unless defined $option{'linker'};
5835 $option{'flags'} = []
5836 unless defined $option{'flags'};
5837 $option{'output_extensions'} = sub { return ( '.$(OBJEXT)', '.lo' ) }
5838 unless defined $option{'output_extensions'};
5839 $option{'nodist_specific'} = 0
5840 unless defined $option{'nodist_specific'};
5842 my $lang = new Language (%option);
5844 # Fill indexes.
5845 $extension_map{$_} = $lang->name foreach @{$lang->extensions};
5846 $languages{$lang->name} = $lang;
5847 my $link = $lang->linker;
5848 if ($link)
5849 {
5850 if (exists $link_languages{$link})
5851 {
5852 prog_error ("`$link' has different definitions in "
5853 . $lang->name . " and " . $link_languages{$link}->name)
5854 if $lang->link ne $link_languages{$link}->link;
5855 }
5856 else
5857 {
5858 $link_languages{$link} = $lang;
5859 }
5860 }
5862 # Update the pattern of known extensions.
5863 accept_extensions (@{$lang->extensions});
5865 # Upate the $suffix_rule map.
5866 foreach my $suffix (@{$lang->extensions})
5867 {
5868 foreach my $dest (&{$lang->output_extensions} ($suffix))
5869 {
5870 register_suffix_rule (INTERNAL, $suffix, $dest);
5871 }
5872 }
5873 }
5875 # derive_suffix ($EXT, $OBJ)
5876 # --------------------------
5877 # This function is used to find a path from a user-specified suffix $EXT
5878 # to $OBJ or to some other suffix we recognize internally, e.g. `cc'.
5879 sub derive_suffix ($$)
5880 {
5881 my ($source_ext, $obj) = @_;
5883 while (! $extension_map{$source_ext}
5884 && $source_ext ne $obj
5885 && exists $suffix_rules->{$source_ext}
5886 && exists $suffix_rules->{$source_ext}{$obj})
5887 {
5888 $source_ext = $suffix_rules->{$source_ext}{$obj}[0];
5889 }
5891 return $source_ext;
5892 }
5895 ################################################################
5897 # Pretty-print something and append to output_rules.
5898 sub pretty_print_rule
5899 {
5900 $output_rules .= &makefile_wrap (@_);
5901 }
5904 ################################################################
5907 ## -------------------------------- ##
5908 ## Handling the conditional stack. ##
5909 ## -------------------------------- ##
5912 # $STRING
5913 # make_conditional_string ($NEGATE, $COND)
5914 # ----------------------------------------
5915 sub make_conditional_string ($$)
5916 {
5917 my ($negate, $cond) = @_;
5918 $cond = "${cond}_TRUE"
5919 unless $cond =~ /^TRUE|FALSE$/;
5920 $cond = Automake::Condition::conditional_negate ($cond)
5921 if $negate;
5922 return $cond;
5923 }
5926 my %_am_macro_for_cond =
5927 (
5928 AMDEP => "one of the compiler tests\n"
5929 . " AC_PROG_CC, AC_PROG_CXX, AC_PROG_CXX, AC_PROG_OBJC,\n"
5930 . " AM_PROG_AS, AM_PROG_GCJ, AM_PROG_UPC",
5931 am__fastdepCC => 'AC_PROG_CC',
5932 am__fastdepCCAS => 'AM_PROG_AS',
5933 am__fastdepCXX => 'AC_PROG_CXX',
5934 am__fastdepGCJ => 'AM_PROG_GCJ',
5935 am__fastdepOBJC => 'AC_PROG_OBJC',
5936 am__fastdepUPC => 'AM_PROG_UPC'
5937 );
5939 # $COND
5940 # cond_stack_if ($NEGATE, $COND, $WHERE)
5941 # --------------------------------------
5942 sub cond_stack_if ($$$)
5943 {
5944 my ($negate, $cond, $where) = @_;
5946 if (! $configure_cond{$cond} && $cond !~ /^TRUE|FALSE$/)
5947 {
5948 my $text = "$cond does not appear in AM_CONDITIONAL";
5949 my $scope = US_LOCAL;
5950 if (exists $_am_macro_for_cond{$cond})
5951 {
5952 my $mac = $_am_macro_for_cond{$cond};
5953 $text .= "\n The usual way to define `$cond' is to add ";
5954 $text .= ($mac =~ / /) ? $mac : "`$mac'";
5955 $text .= "\n to `$configure_ac' and run `aclocal' and `autoconf' again.";
5956 # These warnings appear in Automake files (depend2.am),
5957 # so there is no need to display them more than once:
5958 $scope = US_GLOBAL;
5959 }
5960 error $where, $text, uniq_scope => $scope;
5961 }
5963 push (@cond_stack, make_conditional_string ($negate, $cond));
5965 return new Automake::Condition (@cond_stack);
5966 }
5969 # $COND
5970 # cond_stack_else ($NEGATE, $COND, $WHERE)
5971 # ----------------------------------------
5972 sub cond_stack_else ($$$)
5973 {
5974 my ($negate, $cond, $where) = @_;
5976 if (! @cond_stack)
5977 {
5978 error $where, "else without if";
5979 return FALSE;
5980 }
5982 $cond_stack[$#cond_stack] =
5983 Automake::Condition::conditional_negate ($cond_stack[$#cond_stack]);
5985 # If $COND is given, check against it.
5986 if (defined $cond)
5987 {
5988 $cond = make_conditional_string ($negate, $cond);
5990 error ($where, "else reminder ($negate$cond) incompatible with "
5991 . "current conditional: $cond_stack[$#cond_stack]")
5992 if $cond_stack[$#cond_stack] ne $cond;
5993 }
5995 return new Automake::Condition (@cond_stack);
5996 }
5999 # $COND
6000 # cond_stack_endif ($NEGATE, $COND, $WHERE)
6001 # -----------------------------------------
6002 sub cond_stack_endif ($$$)
6003 {
6004 my ($negate, $cond, $where) = @_;
6005 my $old_cond;
6007 if (! @cond_stack)
6008 {
6009 error $where, "endif without if";
6010 return TRUE;
6011 }
6013 # If $COND is given, check against it.
6014 if (defined $cond)
6015 {
6016 $cond = make_conditional_string ($negate, $cond);
6018 error ($where, "endif reminder ($negate$cond) incompatible with "
6019 . "current conditional: $cond_stack[$#cond_stack]")
6020 if $cond_stack[$#cond_stack] ne $cond;
6021 }
6023 pop @cond_stack;
6025 return new Automake::Condition (@cond_stack);
6026 }
6032 ## ------------------------ ##
6033 ## Handling the variables. ##
6034 ## ------------------------ ##
6037 # &define_pretty_variable ($VAR, $COND, $WHERE, @VALUE)
6038 # -----------------------------------------------------
6039 # Like define_variable, but the value is a list, and the variable may
6040 # be defined conditionally. The second argument is the condition
6041 # under which the value should be defined; this should be the empty
6042 # string to define the variable unconditionally. The third argument
6043 # is a list holding the values to use for the variable. The value is
6044 # pretty printed in the output file.
6045 sub define_pretty_variable ($$$@)
6046 {
6047 my ($var, $cond, $where, @value) = @_;
6049 if (! vardef ($var, $cond))
6050 {
6051 Automake::Variable::define ($var, VAR_AUTOMAKE, '', $cond, "@value",
6052 '', $where, VAR_PRETTY);
6053 rvar ($var)->rdef ($cond)->set_seen;
6054 }
6055 }
6058 # define_variable ($VAR, $VALUE, $WHERE)
6059 # --------------------------------------
6060 # Define a new Automake Makefile variable VAR to VALUE, but only if
6061 # not already defined.
6062 sub define_variable ($$$)
6063 {
6064 my ($var, $value, $where) = @_;
6065 define_pretty_variable ($var, TRUE, $where, $value);
6066 }
6069 # define_files_variable ($VAR, \@BASENAME, $EXTENSION, $WHERE)
6070 # -----------------------------------------------------------
6071 # Define the $VAR which content is the list of file names composed of
6072 # a @BASENAME and the $EXTENSION.
6073 sub define_files_variable ($\@$$)
6074 {
6075 my ($var, $basename, $extension, $where) = @_;
6076 define_variable ($var,
6077 join (' ', map { "$_.$extension" } @$basename),
6078 $where);
6079 }
6082 # Like define_variable, but define a variable to be the configure
6083 # substitution by the same name.
6084 sub define_configure_variable ($)
6085 {
6086 my ($var) = @_;
6088 my $pretty = VAR_ASIS;
6089 my $owner = VAR_CONFIGURE;
6091 # Some variables we do not want to output. For instance it
6092 # would be a bad idea to output `U = @U@` when `@U@` can be
6093 # substituted as `\`.
6094 $pretty = VAR_SILENT if exists $ignored_configure_vars{$var};
6096 # ANSI2KNR is a variable that Automake wants to redefine, so
6097 # it must be owned by Automake. (It is also used as a proof
6098 # that AM_C_PROTOTYPES has been run, that's why we do not simply
6099 # omit the AC_SUBST.)
6100 $owner = VAR_AUTOMAKE if $var eq 'ANSI2KNR';
6102 Automake::Variable::define ($var, $owner, '', TRUE, subst $var,
6103 '', $configure_vars{$var}, $pretty);
6104 }
6107 # define_compiler_variable ($LANG)
6108 # --------------------------------
6109 # Define a compiler variable. We also handle defining the `LT'
6110 # version of the command when using libtool.
6111 sub define_compiler_variable ($)
6112 {
6113 my ($lang) = @_;
6115 my ($var, $value) = ($lang->compiler, $lang->compile);
6116 my $libtool_tag = '';
6117 $libtool_tag = '--tag=' . $lang->libtool_tag . ' '
6118 if $lang->libtool_tag && exists $libtool_tags{$lang->libtool_tag};
6119 &define_variable ($var, $value, INTERNAL);
6120 &define_variable ("LT$var",
6121 "\$(LIBTOOL) $libtool_tag\$(AM_LIBTOOLFLAGS) "
6122 . "\$(LIBTOOLFLAGS) --mode=compile $value",
6123 INTERNAL)
6124 if var ('LIBTOOL');
6125 }
6128 # define_linker_variable ($LANG)
6129 # ------------------------------
6130 # Define linker variables.
6131 sub define_linker_variable ($)
6132 {
6133 my ($lang) = @_;
6135 my $libtool_tag = '';
6136 $libtool_tag = '--tag=' . $lang->libtool_tag . ' '
6137 if $lang->libtool_tag && exists $libtool_tags{$lang->libtool_tag};
6138 # CCLD = $(CC).
6139 &define_variable ($lang->lder, $lang->ld, INTERNAL);
6140 # CCLINK = $(CCLD) blah blah...
6141 &define_variable ($lang->linker,
6142 ((var ('LIBTOOL') ?
6143 "\$(LIBTOOL) $libtool_tag\$(AM_LIBTOOLFLAGS) "
6144 . "\$(LIBTOOLFLAGS) --mode=link " : '')
6145 . $lang->link),
6146 INTERNAL);
6147 }
6149 sub define_per_target_linker_variable ($$)
6150 {
6151 my ($linker, $target) = @_;
6153 # If the user wrote a custom link command, we don't define ours.
6154 return "${target}_LINK"
6155 if set_seen "${target}_LINK";
6157 my $xlink = $linker ? $linker : 'LINK';
6159 my $lang = $link_languages{$xlink};
6160 prog_error "Unknown language for linker variable `$xlink'"
6161 unless $lang;
6163 my $link_command = $lang->link;
6164 if (var 'LIBTOOL')
6165 {
6166 my $libtool_tag = '';
6167 $libtool_tag = '--tag=' . $lang->libtool_tag . ' '
6168 if $lang->libtool_tag && exists $libtool_tags{$lang->libtool_tag};
6170 $link_command =
6171 "\$(LIBTOOL) $libtool_tag\$(AM_LIBTOOLFLAGS) \$(LIBTOOLFLAGS) "
6172 . "--mode=link " . $link_command;
6173 }
6175 # Rewrite each occurrence of `AM_$flag' in the link
6176 # command into `${derived}_$flag' if it exists.
6177 my $orig_command = $link_command;
6178 my @flags = (@{$lang->flags}, 'LDFLAGS');
6179 push @flags, 'LIBTOOLFLAGS' if var 'LIBTOOL';
6180 for my $flag (@flags)
6181 {
6182 my $val = "${target}_$flag";
6183 $link_command =~ s/\(AM_$flag\)/\($val\)/
6184 if set_seen ($val);
6185 }
6187 # If the computed command is the same as the generic command, use
6188 # the command linker variable.
6189 return $lang->linker
6190 if $link_command eq $orig_command;
6192 &define_variable ("${target}_LINK", $link_command, INTERNAL);
6193 return "${target}_LINK";
6194 }
6196 ################################################################
6198 # &check_trailing_slash ($WHERE, $LINE)
6199 # --------------------------------------
6200 # Return 1 iff $LINE ends with a slash.
6201 # Might modify $LINE.
6202 sub check_trailing_slash ($\$)
6203 {
6204 my ($where, $line) = @_;
6206 # Ignore `##' lines.
6207 return 0 if $$line =~ /$IGNORE_PATTERN/o;
6209 # Catch and fix a common error.
6210 msg "syntax", $where, "whitespace following trailing backslash"
6211 if $$line =~ s/\\\s+\n$/\\\n/;
6213 return $$line =~ /\\$/;
6214 }
6217 # &read_am_file ($AMFILE, $WHERE)
6218 # -------------------------------
6219 # Read Makefile.am and set up %contents. Simultaneously copy lines
6220 # from Makefile.am into $output_trailer, or define variables as
6221 # appropriate. NOTE we put rules in the trailer section. We want
6222 # user rules to come after our generated stuff.
6223 sub read_am_file ($$)
6224 {
6225 my ($amfile, $where) = @_;
6227 my $am_file = new Automake::XFile ("< $amfile");
6228 verb "reading $amfile";
6230 # Keep track of the youngest output dependency.
6231 my $mtime = mtime $amfile;
6232 $output_deps_greatest_timestamp = $mtime
6233 if $mtime > $output_deps_greatest_timestamp;
6235 my $spacing = '';
6236 my $comment = '';
6237 my $blank = 0;
6238 my $saw_bk = 0;
6239 my $var_look = VAR_ASIS;
6241 use constant IN_VAR_DEF => 0;
6242 use constant IN_RULE_DEF => 1;
6243 use constant IN_COMMENT => 2;
6244 my $prev_state = IN_RULE_DEF;
6246 while ($_ = $am_file->getline)
6247 {
6248 $where->set ("$amfile:$.");
6249 if (/$IGNORE_PATTERN/o)
6250 {
6251 # Merely delete comments beginning with two hashes.
6252 }
6253 elsif (/$WHITE_PATTERN/o)
6254 {
6255 error $where, "blank line following trailing backslash"
6256 if $saw_bk;
6257 # Stick a single white line before the incoming macro or rule.
6258 $spacing = "\n";
6259 $blank = 1;
6260 # Flush all comments seen so far.
6261 if ($comment ne '')
6262 {
6263 $output_vars .= $comment;
6264 $comment = '';
6265 }
6266 }
6267 elsif (/$COMMENT_PATTERN/o)
6268 {
6269 # Stick comments before the incoming macro or rule. Make
6270 # sure a blank line precedes the first block of comments.
6271 $spacing = "\n" unless $blank;
6272 $blank = 1;
6273 $comment .= $spacing . $_;
6274 $spacing = '';
6275 $prev_state = IN_COMMENT;
6276 }
6277 else
6278 {
6279 last;
6280 }
6281 $saw_bk = check_trailing_slash ($where, $_);
6282 }
6284 # We save the conditional stack on entry, and then check to make
6285 # sure it is the same on exit. This lets us conditionally include
6286 # other files.
6287 my @saved_cond_stack = @cond_stack;
6288 my $cond = new Automake::Condition (@cond_stack);
6290 my $last_var_name = '';
6291 my $last_var_type = '';
6292 my $last_var_value = '';
6293 my $last_where;
6294 # FIXME: shouldn't use $_ in this loop; it is too big.
6295 while ($_)
6296 {
6297 $where->set ("$amfile:$.");
6299 # Make sure the line is \n-terminated.
6300 chomp;
6301 $_ .= "\n";
6303 # Don't look at MAINTAINER_MODE_TRUE here. That shouldn't be
6304 # used by users. @MAINT@ is an anachronism now.
6305 $_ =~ s/\@MAINT\@//g
6306 unless $seen_maint_mode;
6308 my $new_saw_bk = check_trailing_slash ($where, $_);
6310 if (/$IGNORE_PATTERN/o)
6311 {
6312 # Merely delete comments beginning with two hashes.
6314 # Keep any backslash from the previous line.
6315 $new_saw_bk = $saw_bk;
6316 }
6317 elsif (/$WHITE_PATTERN/o)
6318 {
6319 # Stick a single white line before the incoming macro or rule.
6320 $spacing = "\n";
6321 error $where, "blank line following trailing backslash"
6322 if $saw_bk;
6323 }
6324 elsif (/$COMMENT_PATTERN/o)
6325 {
6326 error $where, "comment following trailing backslash"
6327 if $saw_bk && $comment eq '';
6329 # Stick comments before the incoming macro or rule.
6330 $comment .= $spacing . $_;
6331 $spacing = '';
6332 $prev_state = IN_COMMENT;
6333 }
6334 elsif ($saw_bk)
6335 {
6336 if ($prev_state == IN_RULE_DEF)
6337 {
6338 my $cond = new Automake::Condition @cond_stack;
6339 $output_trailer .= $cond->subst_string;
6340 $output_trailer .= $_;
6341 }
6342 elsif ($prev_state == IN_COMMENT)
6343 {
6344 # If the line doesn't start with a `#', add it.
6345 # We do this because a continued comment like
6346 # # A = foo \
6347 # bar \
6348 # baz
6349 # is not portable. BSD make doesn't honor
6350 # escaped newlines in comments.
6351 s/^#?/#/;
6352 $comment .= $spacing . $_;
6353 }
6354 else # $prev_state == IN_VAR_DEF
6355 {
6356 $last_var_value .= ' '
6357 unless $last_var_value =~ /\s$/;
6358 $last_var_value .= $_;
6360 if (!/\\$/)
6361 {
6362 Automake::Variable::define ($last_var_name, VAR_MAKEFILE,
6363 $last_var_type, $cond,
6364 $last_var_value, $comment,
6365 $last_where, VAR_ASIS)
6366 if $cond != FALSE;
6367 $comment = $spacing = '';
6368 }
6369 }
6370 }
6372 elsif (/$IF_PATTERN/o)
6373 {
6374 $cond = cond_stack_if ($1, $2, $where);
6375 }
6376 elsif (/$ELSE_PATTERN/o)
6377 {
6378 $cond = cond_stack_else ($1, $2, $where);
6379 }
6380 elsif (/$ENDIF_PATTERN/o)
6381 {
6382 $cond = cond_stack_endif ($1, $2, $where);
6383 }
6385 elsif (/$RULE_PATTERN/o)
6386 {
6387 # Found a rule.
6388 $prev_state = IN_RULE_DEF;
6390 # For now we have to output all definitions of user rules
6391 # and can't diagnose duplicates (see the comment in
6392 # Automake::Rule::define). So we go on and ignore the return value.
6393 Automake::Rule::define ($1, $amfile, RULE_USER, $cond, $where);
6395 check_variable_expansions ($_, $where);
6397 $output_trailer .= $comment . $spacing;
6398 my $cond = new Automake::Condition @cond_stack;
6399 $output_trailer .= $cond->subst_string;
6400 $output_trailer .= $_;
6401 $comment = $spacing = '';
6402 }
6403 elsif (/$ASSIGNMENT_PATTERN/o)
6404 {
6405 # Found a macro definition.
6406 $prev_state = IN_VAR_DEF;
6407 $last_var_name = $1;
6408 $last_var_type = $2;
6409 $last_var_value = $3;
6410 $last_where = $where->clone;
6411 if ($3 ne '' && substr ($3, -1) eq "\\")
6412 {
6413 # We preserve the `\' because otherwise the long lines
6414 # that are generated will be truncated by broken
6415 # `sed's.
6416 $last_var_value = $3 . "\n";
6417 }
6418 # Normally we try to output variable definitions in the
6419 # same format they were input. However, POSIX compliant
6420 # systems are not required to support lines longer than
6421 # 2048 bytes (most notably, some sed implementation are
6422 # limited to 4000 bytes, and sed is used by config.status
6423 # to rewrite Makefile.in into Makefile). Moreover nobody
6424 # would really write such long lines by hand since it is
6425 # hardly maintainable. So if a line is longer that 1000
6426 # bytes (an arbitrary limit), assume it has been
6427 # automatically generated by some tools, and flatten the
6428 # variable definition. Otherwise, keep the variable as it
6429 # as been input.
6430 $var_look = VAR_PRETTY if length ($last_var_value) >= 1000;
6432 if (!/\\$/)
6433 {
6434 Automake::Variable::define ($last_var_name, VAR_MAKEFILE,
6435 $last_var_type, $cond,
6436 $last_var_value, $comment,
6437 $last_where, $var_look)
6438 if $cond != FALSE;
6439 $comment = $spacing = '';
6440 $var_look = VAR_ASIS;
6441 }
6442 }
6443 elsif (/$INCLUDE_PATTERN/o)
6444 {
6445 my $path = $1;
6447 if ($path =~ s/^\$\(top_srcdir\)\///)
6448 {
6449 push (@include_stack, "\$\(top_srcdir\)/$path");
6450 # Distribute any included file.
6452 # Always use the $(top_srcdir) prefix in DIST_COMMON,
6453 # otherwise OSF make will implicitly copy the included
6454 # file in the build tree during `make distdir' to satisfy
6455 # the dependency.
6456 # (subdircond2.test and subdircond3.test will fail.)
6457 push_dist_common ("\$\(top_srcdir\)/$path");
6458 }
6459 else
6460 {
6461 $path =~ s/\$\(srcdir\)\///;
6462 push (@include_stack, "\$\(srcdir\)/$path");
6463 # Always use the $(srcdir) prefix in DIST_COMMON,
6464 # otherwise OSF make will implicitly copy the included
6465 # file in the build tree during `make distdir' to satisfy
6466 # the dependency.
6467 # (subdircond2.test and subdircond3.test will fail.)
6468 push_dist_common ("\$\(srcdir\)/$path");
6469 $path = $relative_dir . "/" . $path if $relative_dir ne '.';
6470 }
6471 $where->push_context ("`$path' included from here");
6472 &read_am_file ($path, $where);
6473 $where->pop_context;
6474 }
6475 else
6476 {
6477 # This isn't an error; it is probably a continued rule.
6478 # In fact, this is what we assume.
6479 $prev_state = IN_RULE_DEF;
6480 check_variable_expansions ($_, $where);
6481 $output_trailer .= $comment . $spacing;
6482 my $cond = new Automake::Condition @cond_stack;
6483 $output_trailer .= $cond->subst_string;
6484 $output_trailer .= $_;
6485 $comment = $spacing = '';
6486 error $where, "`#' comment at start of rule is unportable"
6487 if $_ =~ /^\t\s*\#/;
6488 }
6490 $saw_bk = $new_saw_bk;
6491 $_ = $am_file->getline;
6492 }
6494 $output_trailer .= $comment;
6496 error ($where, "trailing backslash on last line")
6497 if $saw_bk;
6499 error ($where, (@cond_stack ? "unterminated conditionals: @cond_stack"
6500 : "too many conditionals closed in include file"))
6501 if "@saved_cond_stack" ne "@cond_stack";
6502 }
6505 # define_standard_variables ()
6506 # ----------------------------
6507 # A helper for read_main_am_file which initializes configure variables
6508 # and variables from header-vars.am.
6509 sub define_standard_variables
6510 {
6511 my $saved_output_vars = $output_vars;
6512 my ($comments, undef, $rules) =
6513 file_contents_internal (1, "$libdir/am/header-vars.am",
6514 new Automake::Location);
6516 foreach my $var (sort keys %configure_vars)
6517 {
6518 &define_configure_variable ($var);
6519 }
6521 $output_vars .= $comments . $rules;
6522 }
6524 # Read main am file.
6525 sub read_main_am_file
6526 {
6527 my ($amfile) = @_;
6529 # This supports the strange variable tricks we are about to play.
6530 prog_error (macros_dump () . "variable defined before read_main_am_file")
6531 if (scalar (variables) > 0);
6533 # Generate copyright header for generated Makefile.in.
6534 # We do discard the output of predefined variables, handled below.
6535 $output_vars = ("# $in_file_name generated by automake "
6536 . $VERSION . " from $am_file_name.\n");
6537 $output_vars .= '# ' . subst ('configure_input') . "\n";
6538 $output_vars .= $gen_copyright;
6540 # We want to predefine as many variables as possible. This lets
6541 # the user set them with `+=' in Makefile.am.
6542 &define_standard_variables;
6544 # Read user file, which might override some of our values.
6545 &read_am_file ($amfile, new Automake::Location);
6546 }
6550 ################################################################
6552 # $FLATTENED
6553 # &flatten ($STRING)
6554 # ------------------
6555 # Flatten the $STRING and return the result.
6556 sub flatten
6557 {
6558 $_ = shift;
6560 s/\\\n//somg;
6561 s/\s+/ /g;
6562 s/^ //;
6563 s/ $//;
6565 return $_;
6566 }
6569 # transform_token ($TOKEN, \%PAIRS, $KEY)
6570 # =======================================
6571 # Return the value associated to $KEY in %PAIRS, as used on $TOKEN
6572 # (which should be ?KEY? or any of the special %% requests)..
6573 sub transform_token ($$$)
6574 {
6575 my ($token, $transform, $key) = @_;
6576 my $res = $transform->{$key};
6577 prog_error "Unknown key `$key' in `$token'" unless defined $res;
6578 return $res;
6579 }
6582 # transform ($TOKEN, \%PAIRS)
6583 # ===========================
6584 # If ($TOKEN, $VAL) is in %PAIRS:
6585 # - replaces %KEY% with $VAL,
6586 # - enables/disables ?KEY? and ?!KEY?,
6587 # - replaces %?KEY% with TRUE or FALSE.
6588 # - replaces %KEY?IFTRUE%, %KEY:IFFALSE%, and %KEY?IFTRUE:IFFALSE% with
6589 # IFTRUE / IFFALSE, as appropriate.
6590 sub transform ($$)
6591 {
6592 my ($token, $transform) = @_;
6594 # %KEY%.
6595 # Must be before the following pattern to exclude the case
6596 # when there is neither IFTRUE nor IFFALSE.
6597 if ($token =~ /^%([\w\-]+)%$/)
6598 {
6599 return transform_token ($token, $transform, $1);
6600 }
6601 # %KEY?IFTRUE%, %KEY:IFFALSE%, and %KEY?IFTRUE:IFFALSE%.
6602 elsif ($token =~ /^%([\w\-]+)(?:\?([^?:%]+))?(?::([^?:%]+))?%$/)
6603 {
6604 return transform_token ($token, $transform, $1) ? ($2 || '') : ($3 || '');
6605 }
6606 # %?KEY%.
6607 elsif ($token =~ /^%\?([\w\-]+)%$/)
6608 {
6609 return transform_token ($token, $transform, $1) ? 'TRUE' : 'FALSE';
6610 }
6611 # ?KEY? and ?!KEY?.
6612 elsif ($token =~ /^ \? (!?) ([\w\-]+) \? $/x)
6613 {
6614 my $neg = ($1 eq '!') ? 1 : 0;
6615 my $val = transform_token ($token, $transform, $2);
6616 return (!!$val == $neg) ? '##%' : '';
6617 }
6618 else
6619 {
6620 prog_error "Unknown request format: $token";
6621 }
6622 }
6625 # @PARAGRAPHS
6626 # &make_paragraphs ($MAKEFILE, [%TRANSFORM])
6627 # ------------------------------------------
6628 # Load a $MAKEFILE, apply the %TRANSFORM, and return it as a list of
6629 # paragraphs.
6630 sub make_paragraphs ($%)
6631 {
6632 my ($file, %transform) = @_;
6634 # Complete %transform with global options.
6635 # Note that %transform goes last, so it overrides global options.
6636 %transform = ('CYGNUS' => !! option 'cygnus',
6637 'MAINTAINER-MODE'
6638 => $seen_maint_mode ? subst ('MAINTAINER_MODE_TRUE') : '',
6640 'XZ' => !! option 'dist-xz',
6641 'LZMA' => !! option 'dist-lzma',
6642 'BZIP2' => !! option 'dist-bzip2',
6643 'COMPRESS' => !! option 'dist-tarZ',
6644 'GZIP' => ! option 'no-dist-gzip',
6645 'SHAR' => !! option 'dist-shar',
6646 'ZIP' => !! option 'dist-zip',
6648 'INSTALL-INFO' => ! option 'no-installinfo',
6649 'INSTALL-MAN' => ! option 'no-installman',
6650 'HAVE-MANS' => !! var ('MANS'),
6651 'CK-NEWS' => !! option 'check-news',
6653 'SUBDIRS' => !! var ('SUBDIRS'),
6654 'TOPDIR_P' => $relative_dir eq '.',
6656 'BUILD' => ($seen_canonical >= AC_CANONICAL_BUILD),
6657 'HOST' => ($seen_canonical >= AC_CANONICAL_HOST),
6658 'TARGET' => ($seen_canonical >= AC_CANONICAL_TARGET),
6660 'LIBTOOL' => !! var ('LIBTOOL'),
6661 'NONLIBTOOL' => 1,
6662 'FIRST' => ! $transformed_files{$file},
6663 %transform);
6665 $transformed_files{$file} = 1;
6666 $_ = $am_file_cache{$file};
6668 if (! defined $_)
6669 {
6670 verb "reading $file";
6671 # Swallow the whole file.
6672 my $fc_file = new Automake::XFile "< $file";
6673 my $saved_dollar_slash = $/;
6674 undef $/;
6675 $_ = $fc_file->getline;
6676 $/ = $saved_dollar_slash;
6677 $fc_file->close;
6679 # Remove ##-comments.
6680 # Besides we don't need more than two consecutive new-lines.
6681 s/(?:$IGNORE_PATTERN|(?<=\n\n)\n+)//gom;
6683 $am_file_cache{$file} = $_;
6684 }
6686 # Substitute Automake template tokens.
6687 s/(?: % \?? [\w\-]+ %
6688 | % [\w\-]+ (?:\?[^?:%]+)? (?::[^?:%]+)? %
6689 | \? !? [\w\-]+ \?
6690 )/transform($&, \%transform)/gex;
6691 # transform() may have added some ##%-comments to strip.
6692 # (we use `##%' instead of `##' so we can distinguish ##%##%##% from
6693 # ####### and do not remove the latter.)
6694 s/^[ \t]*(?:##%)+.*\n//gm;
6696 # Split at unescaped new lines.
6697 my @lines = split (/(?<!\\)\n/, $_);
6698 my @res;
6700 while (defined ($_ = shift @lines))
6701 {
6702 my $paragraph = $_;
6703 # If we are a rule, eat as long as we start with a tab.
6704 if (/$RULE_PATTERN/smo)
6705 {
6706 while (defined ($_ = shift @lines) && $_ =~ /^\t/)
6707 {
6708 $paragraph .= "\n$_";
6709 }
6710 unshift (@lines, $_);
6711 }
6713 # If we are a comments, eat as much comments as you can.
6714 elsif (/$COMMENT_PATTERN/smo)
6715 {
6716 while (defined ($_ = shift @lines)
6717 && $_ =~ /$COMMENT_PATTERN/smo)
6718 {
6719 $paragraph .= "\n$_";
6720 }
6721 unshift (@lines, $_);
6722 }
6724 push @res, $paragraph;
6725 }
6727 return @res;
6728 }
6732 # ($COMMENT, $VARIABLES, $RULES)
6733 # &file_contents_internal ($IS_AM, $FILE, $WHERE, [%TRANSFORM])
6734 # -------------------------------------------------------------
6735 # Return contents of a file from $libdir/am, automatically skipping
6736 # macros or rules which are already known. $IS_AM iff the caller is
6737 # reading an Automake file (as opposed to the user's Makefile.am).
6738 sub file_contents_internal ($$$%)
6739 {
6740 my ($is_am, $file, $where, %transform) = @_;
6742 $where->set ($file);
6744 my $result_vars = '';
6745 my $result_rules = '';
6746 my $comment = '';
6747 my $spacing = '';
6749 # The following flags are used to track rules spanning across
6750 # multiple paragraphs.
6751 my $is_rule = 0; # 1 if we are processing a rule.
6752 my $discard_rule = 0; # 1 if the current rule should not be output.
6754 # We save the conditional stack on entry, and then check to make
6755 # sure it is the same on exit. This lets us conditionally include
6756 # other files.
6757 my @saved_cond_stack = @cond_stack;
6758 my $cond = new Automake::Condition (@cond_stack);
6760 foreach (make_paragraphs ($file, %transform))
6761 {
6762 # FIXME: no line number available.
6763 $where->set ($file);
6765 # Sanity checks.
6766 error $where, "blank line following trailing backslash:\n$_"
6767 if /\\$/;
6768 error $where, "comment following trailing backslash:\n$_"
6769 if /\\#/;
6771 if (/^$/)
6772 {
6773 $is_rule = 0;
6774 # Stick empty line before the incoming macro or rule.
6775 $spacing = "\n";
6776 }
6777 elsif (/$COMMENT_PATTERN/mso)
6778 {
6779 $is_rule = 0;
6780 # Stick comments before the incoming macro or rule.
6781 $comment = "$_\n";
6782 }
6784 # Handle inclusion of other files.
6785 elsif (/$INCLUDE_PATTERN/o)
6786 {
6787 if ($cond != FALSE)
6788 {
6789 my $file = ($is_am ? "$libdir/am/" : '') . $1;
6790 $where->push_context ("`$file' included from here");
6791 # N-ary `.=' fails.
6792 my ($com, $vars, $rules)
6793 = file_contents_internal ($is_am, $file, $where, %transform);
6794 $where->pop_context;
6795 $comment .= $com;
6796 $result_vars .= $vars;
6797 $result_rules .= $rules;
6798 }
6799 }
6801 # Handling the conditionals.
6802 elsif (/$IF_PATTERN/o)
6803 {
6804 $cond = cond_stack_if ($1, $2, $file);
6805 }
6806 elsif (/$ELSE_PATTERN/o)
6807 {
6808 $cond = cond_stack_else ($1, $2, $file);
6809 }
6810 elsif (/$ENDIF_PATTERN/o)
6811 {
6812 $cond = cond_stack_endif ($1, $2, $file);
6813 }
6815 # Handling rules.
6816 elsif (/$RULE_PATTERN/mso)
6817 {
6818 $is_rule = 1;
6819 $discard_rule = 0;
6820 # Separate relationship from optional actions: the first
6821 # `new-line tab" not preceded by backslash (continuation
6822 # line).
6823 my $paragraph = $_;
6824 /^(.*?)(?:(?<!\\)\n(\t.*))?$/s;
6825 my ($relationship, $actions) = ($1, $2 || '');
6827 # Separate targets from dependencies: the first colon.
6828 $relationship =~ /^([^:]+\S+) *: *(.*)$/som;
6829 my ($targets, $dependencies) = ($1, $2);
6830 # Remove the escaped new lines.
6831 # I don't know why, but I have to use a tmp $flat_deps.
6832 my $flat_deps = &flatten ($dependencies);
6833 my @deps = split (' ', $flat_deps);
6835 foreach (split (' ', $targets))
6836 {
6837 # FIXME: 1. We are not robust to people defining several targets
6838 # at once, only some of them being in %dependencies. The
6839 # actions from the targets in %dependencies are usually generated
6840 # from the content of %actions, but if some targets in $targets
6841 # are not in %dependencies the ELSE branch will output
6842 # a rule for all $targets (i.e. the targets which are both
6843 # in %dependencies and $targets will have two rules).
6845 # FIXME: 2. The logic here is not able to output a
6846 # multi-paragraph rule several time (e.g. for each condition
6847 # it is defined for) because it only knows the first paragraph.
6849 # FIXME: 3. We are not robust to people defining a subset
6850 # of a previously defined "multiple-target" rule. E.g.
6851 # `foo:' after `foo bar:'.
6853 # Output only if not in FALSE.
6854 if (defined $dependencies{$_} && $cond != FALSE)
6855 {
6856 &depend ($_, @deps);
6857 register_action ($_, $actions);
6858 }
6859 else
6860 {
6861 # Free-lance dependency. Output the rule for all the
6862 # targets instead of one by one.
6863 my @undefined_conds =
6864 Automake::Rule::define ($targets, $file,
6865 $is_am ? RULE_AUTOMAKE : RULE_USER,
6866 $cond, $where);
6867 for my $undefined_cond (@undefined_conds)
6868 {
6869 my $condparagraph = $paragraph;
6870 $condparagraph =~ s/^/$undefined_cond->subst_string/gme;
6871 $result_rules .= "$spacing$comment$condparagraph\n";
6872 }
6873 if (scalar @undefined_conds == 0)
6874 {
6875 # Remember to discard next paragraphs
6876 # if they belong to this rule.
6877 # (but see also FIXME: #2 above.)
6878 $discard_rule = 1;
6879 }
6880 $comment = $spacing = '';
6881 last;
6882 }
6883 }
6884 }
6886 elsif (/$ASSIGNMENT_PATTERN/mso)
6887 {
6888 my ($var, $type, $val) = ($1, $2, $3);
6889 error $where, "variable `$var' with trailing backslash"
6890 if /\\$/;
6892 $is_rule = 0;
6894 Automake::Variable::define ($var,
6895 $is_am ? VAR_AUTOMAKE : VAR_MAKEFILE,
6896 $type, $cond, $val, $comment, $where,
6897 VAR_ASIS)
6898 if $cond != FALSE;
6900 $comment = $spacing = '';
6901 }
6902 else
6903 {
6904 # This isn't an error; it is probably some tokens which
6905 # configure is supposed to replace, such as `@SET-MAKE@',
6906 # or some part of a rule cut by an if/endif.
6907 if (! $cond->false && ! ($is_rule && $discard_rule))
6908 {
6909 s/^/$cond->subst_string/gme;
6910 $result_rules .= "$spacing$comment$_\n";
6911 }
6912 $comment = $spacing = '';
6913 }
6914 }
6916 error ($where, @cond_stack ?
6917 "unterminated conditionals: @cond_stack" :
6918 "too many conditionals closed in include file")
6919 if "@saved_cond_stack" ne "@cond_stack";
6921 return ($comment, $result_vars, $result_rules);
6922 }
6925 # $CONTENTS
6926 # &file_contents ($BASENAME, $WHERE, [%TRANSFORM])
6927 # ------------------------------------------------
6928 # Return contents of a file from $libdir/am, automatically skipping
6929 # macros or rules which are already known.
6930 sub file_contents ($$%)
6931 {
6932 my ($basename, $where, %transform) = @_;
6933 my ($comments, $variables, $rules) =
6934 file_contents_internal (1, "$libdir/am/$basename.am", $where,
6935 %transform);
6936 return "$comments$variables$rules";
6937 }
6940 # @PREFIX
6941 # &am_primary_prefixes ($PRIMARY, $CAN_DIST, @PREFIXES)
6942 # -----------------------------------------------------
6943 # Find all variable prefixes that are used for install directories. A
6944 # prefix `zar' qualifies iff:
6945 #
6946 # * `zardir' is a variable.
6947 # * `zar_PRIMARY' is a variable.
6948 #
6949 # As a side effect, it looks for misspellings. It is an error to have
6950 # a variable ending in a "reserved" suffix whose prefix is unknown, e.g.
6951 # "bni_PROGRAMS". However, unusual prefixes are allowed if a variable
6952 # of the same name (with "dir" appended) exists. For instance, if the
6953 # variable "zardir" is defined, then "zar_PROGRAMS" becomes valid.
6954 # This is to provide a little extra flexibility in those cases which
6955 # need it.
6956 sub am_primary_prefixes ($$@)
6957 {
6958 my ($primary, $can_dist, @prefixes) = @_;
6960 local $_;
6961 my %valid = map { $_ => 0 } @prefixes;
6962 $valid{'EXTRA'} = 0;
6963 foreach my $var (variables $primary)
6964 {
6965 # Automake is allowed to define variables that look like primaries
6966 # but which aren't. E.g. INSTALL_sh_DATA.
6967 # Autoconf can also define variables like INSTALL_DATA, so
6968 # ignore all configure variables (at least those which are not
6969 # redefined in Makefile.am).
6970 # FIXME: We should make sure that these variables are not
6971 # conditionally defined (or else adjust the condition below).
6972 my $def = $var->def (TRUE);
6973 next if $def && $def->owner != VAR_MAKEFILE;
6975 my $varname = $var->name;
6977 if ($varname =~ /^(nobase_)?(dist_|nodist_)?(.*)_[[:alnum:]]+$/)
6978 {
6979 my ($base, $dist, $X) = ($1 || '', $2 || '', $3 || '');
6980 if ($dist ne '' && ! $can_dist)
6981 {
6982 err_var ($var,
6983 "invalid variable `$varname': `dist' is forbidden");
6984 }
6985 # Standard directories must be explicitly allowed.
6986 elsif (! defined $valid{$X} && exists $standard_prefix{$X})
6987 {
6988 err_var ($var,
6989 "`${X}dir' is not a legitimate directory " .
6990 "for `$primary'");
6991 }
6992 # A not explicitly valid directory is allowed if Xdir is defined.
6993 elsif (! defined $valid{$X} &&
6994 $var->requires_variables ("`$varname' is used", "${X}dir"))
6995 {
6996 # Nothing to do. Any error message has been output
6997 # by $var->requires_variables.
6998 }
6999 else
7000 {
7001 # Ensure all extended prefixes are actually used.
7002 $valid{"$base$dist$X"} = 1;
7003 }
7004 }
7005 else
7006 {
7007 prog_error "unexpected variable name: $varname";
7008 }
7009 }
7011 # Return only those which are actually defined.
7012 return sort grep { var ($_ . '_' . $primary) } keys %valid;
7013 }
7016 # Handle `where_HOW' variable magic. Does all lookups, generates
7017 # install code, and possibly generates code to define the primary
7018 # variable. The first argument is the name of the .am file to munge,
7019 # the second argument is the primary variable (e.g. HEADERS), and all
7020 # subsequent arguments are possible installation locations.
7021 #
7022 # Returns list of [$location, $value] pairs, where
7023 # $value's are the values in all where_HOW variable, and $location
7024 # there associated location (the place here their parent variables were
7025 # defined).
7026 #
7027 # FIXME: this should be rewritten to be cleaner. It should be broken
7028 # up into multiple functions.
7029 #
7030 # Usage is: am_install_var (OPTION..., file, HOW, where...)
7031 sub am_install_var
7032 {
7033 my (@args) = @_;
7035 my $do_require = 1;
7036 my $can_dist = 0;
7037 my $default_dist = 0;
7038 while (@args)
7039 {
7040 if ($args[0] eq '-noextra')
7041 {
7042 $do_require = 0;
7043 }
7044 elsif ($args[0] eq '-candist')
7045 {
7046 $can_dist = 1;
7047 }
7048 elsif ($args[0] eq '-defaultdist')
7049 {
7050 $default_dist = 1;
7051 $can_dist = 1;
7052 }
7053 elsif ($args[0] !~ /^-/)
7054 {
7055 last;
7056 }
7057 shift (@args);
7058 }
7060 my ($file, $primary, @prefix) = @args;
7062 # Now that configure substitutions are allowed in where_HOW
7063 # variables, it is an error to actually define the primary. We
7064 # allow `JAVA', as it is customarily used to mean the Java
7065 # interpreter. This is but one of several Java hacks. Similarly,
7066 # `PYTHON' is customarily used to mean the Python interpreter.
7067 reject_var $primary, "`$primary' is an anachronism"
7068 unless $primary eq 'JAVA' || $primary eq 'PYTHON';
7070 # Get the prefixes which are valid and actually used.
7071 @prefix = am_primary_prefixes ($primary, $can_dist, @prefix);
7073 # If a primary includes a configure substitution, then the EXTRA_
7074 # form is required. Otherwise we can't properly do our job.
7075 my $require_extra;
7077 my @used = ();
7078 my @result = ();
7080 foreach my $X (@prefix)
7081 {
7082 my $nodir_name = $X;
7083 my $one_name = $X . '_' . $primary;
7084 my $one_var = var $one_name;
7086 my $strip_subdir = 1;
7087 # If subdir prefix should be preserved, do so.
7088 if ($nodir_name =~ /^nobase_/)
7089 {
7090 $strip_subdir = 0;
7091 $nodir_name =~ s/^nobase_//;
7092 }
7094 # If files should be distributed, do so.
7095 my $dist_p = 0;
7096 if ($can_dist)
7097 {
7098 $dist_p = (($default_dist && $nodir_name !~ /^nodist_/)
7099 || (! $default_dist && $nodir_name =~ /^dist_/));
7100 $nodir_name =~ s/^(dist|nodist)_//;
7101 }
7104 # Use the location of the currently processed variable.
7105 # We are not processing a particular condition, so pick the first
7106 # available.
7107 my $tmpcond = $one_var->conditions->one_cond;
7108 my $where = $one_var->rdef ($tmpcond)->location->clone;
7110 # Append actual contents of where_PRIMARY variable to
7111 # @result, skipping @substitutions@.
7112 foreach my $locvals ($one_var->value_as_list_recursive (location => 1))
7113 {
7114 my ($loc, $value) = @$locvals;
7115 # Skip configure substitutions.
7116 if ($value =~ /^\@.*\@$/)
7117 {
7118 if ($nodir_name eq 'EXTRA')
7119 {
7120 error ($where,
7121 "`$one_name' contains configure substitution, "
7122 . "but shouldn't");
7123 }
7124 # Check here to make sure variables defined in
7125 # configure.ac do not imply that EXTRA_PRIMARY
7126 # must be defined.
7127 elsif (! defined $configure_vars{$one_name})
7128 {
7129 $require_extra = $one_name
7130 if $do_require;
7131 }
7132 }
7133 else
7134 {
7135 push (@result, $locvals);
7136 }
7137 }
7138 # A blatant hack: we rewrite each _PROGRAMS primary to include
7139 # EXEEXT.
7140 append_exeext { 1 } $one_name
7141 if $primary eq 'PROGRAMS';
7142 # "EXTRA" shouldn't be used when generating clean targets,
7143 # all, or install targets. We used to warn if EXTRA_FOO was
7144 # defined uselessly, but this was annoying.
7145 next
7146 if $nodir_name eq 'EXTRA';
7148 if ($nodir_name eq 'check')
7149 {
7150 push (@check, '$(' . $one_name . ')');
7151 }
7152 else
7153 {
7154 push (@used, '$(' . $one_name . ')');
7155 }
7157 # Is this to be installed?
7158 my $install_p = $nodir_name ne 'noinst' && $nodir_name ne 'check';
7160 # If so, with install-exec? (or install-data?).
7161 my $exec_p = ($nodir_name =~ /$EXEC_DIR_PATTERN/o);
7163 my $check_options_p = $install_p && !! option 'std-options';
7165 # Use the location of the currently processed variable as context.
7166 $where->push_context ("while processing `$one_name'");
7168 # The variable containing all files to distribute.
7169 my $distvar = "\$($one_name)";
7170 $distvar = shadow_unconditionally ($one_name, $where)
7171 if ($dist_p && $one_var->has_conditional_contents);
7173 # Singular form of $PRIMARY.
7174 (my $one_primary = $primary) =~ s/S$//;
7175 $output_rules .= &file_contents ($file, $where,
7176 PRIMARY => $primary,
7177 ONE_PRIMARY => $one_primary,
7178 DIR => $X,
7179 NDIR => $nodir_name,
7180 BASE => $strip_subdir,
7182 EXEC => $exec_p,
7183 INSTALL => $install_p,
7184 DIST => $dist_p,
7185 DISTVAR => $distvar,
7186 'CK-OPTS' => $check_options_p);
7187 }
7189 # The JAVA variable is used as the name of the Java interpreter.
7190 # The PYTHON variable is used as the name of the Python interpreter.
7191 if (@used && $primary ne 'JAVA' && $primary ne 'PYTHON')
7192 {
7193 # Define it.
7194 define_pretty_variable ($primary, TRUE, INTERNAL, @used);
7195 $output_vars .= "\n";
7196 }
7198 err_var ($require_extra,
7199 "`$require_extra' contains configure substitution,\n"
7200 . "but `EXTRA_$primary' not defined")
7201 if ($require_extra && ! var ('EXTRA_' . $primary));
7203 # Push here because PRIMARY might be configure time determined.
7204 push (@all, '$(' . $primary . ')')
7205 if @used && $primary ne 'JAVA' && $primary ne 'PYTHON';
7207 # Make the result unique. This lets the user use conditionals in
7208 # a natural way, but still lets us program lazily -- we don't have
7209 # to worry about handling a particular object more than once.
7210 # We will keep only one location per object.
7211 my %result = ();
7212 for my $pair (@result)
7213 {
7214 my ($loc, $val) = @$pair;
7215 $result{$val} = $loc;
7216 }
7217 my @l = sort keys %result;
7218 return map { [$result{$_}->clone, $_] } @l;
7219 }
7222 ################################################################
7224 # Each key in this hash is the name of a directory holding a
7225 # Makefile.in. These variables are local to `is_make_dir'.
7226 my %make_dirs = ();
7227 my $make_dirs_set = 0;
7229 sub is_make_dir
7230 {
7231 my ($dir) = @_;
7232 if (! $make_dirs_set)
7233 {
7234 foreach my $iter (@configure_input_files)
7235 {
7236 $make_dirs{dirname ($iter)} = 1;
7237 }
7238 # We also want to notice Makefile.in's.
7239 foreach my $iter (@other_input_files)
7240 {
7241 if ($iter =~ /Makefile\.in$/)
7242 {
7243 $make_dirs{dirname ($iter)} = 1;
7244 }
7245 }
7246 $make_dirs_set = 1;
7247 }
7248 return defined $make_dirs{$dir};
7249 }
7251 ################################################################
7253 # Find the aux dir. This should match the algorithm used by
7254 # ./configure. (See the Autoconf documentation for for
7255 # AC_CONFIG_AUX_DIR.)
7256 sub locate_aux_dir ()
7257 {
7258 if (! $config_aux_dir_set_in_configure_ac)
7259 {
7260 # The default auxiliary directory is the first
7261 # of ., .., or ../.. that contains install-sh.
7262 # Assume . if install-sh doesn't exist yet.
7263 for my $dir (qw (. .. ../..))
7264 {
7265 if (-f "$dir/install-sh")
7266 {
7267 $config_aux_dir = $dir;
7268 last;
7269 }
7270 }
7271 $config_aux_dir = '.' unless $config_aux_dir;
7272 }
7273 # Avoid unsightly '/.'s.
7274 $am_config_aux_dir =
7275 '$(top_srcdir)' . ($config_aux_dir eq '.' ? "" : "/$config_aux_dir");
7276 $am_config_aux_dir =~ s,/*$,,;
7277 }
7280 # &maybe_push_required_file ($DIR, $FILE, $FULLFILE)
7281 # --------------------------------------------------
7282 # See if we want to push this file onto dist_common. This function
7283 # encodes the rules for deciding when to do so.
7284 sub maybe_push_required_file
7285 {
7286 my ($dir, $file, $fullfile) = @_;
7288 if ($dir eq $relative_dir)
7289 {
7290 push_dist_common ($file);
7291 return 1;
7292 }
7293 elsif ($relative_dir eq '.' && ! &is_make_dir ($dir))
7294 {
7295 # If we are doing the topmost directory, and the file is in a
7296 # subdir which does not have a Makefile, then we distribute it
7297 # here.
7299 # If a required file is above the source tree, it is important
7300 # to prefix it with `$(srcdir)' so that no VPATH search is
7301 # performed. Otherwise problems occur with Make implementations
7302 # that rewrite and simplify rules whose dependencies are found in a
7303 # VPATH location. Here is an example with OSF1/Tru64 Make.
7304 #
7305 # % cat Makefile
7306 # VPATH = sub
7307 # distdir: ../a
7308 # echo ../a
7309 # % ls
7310 # Makefile a
7311 # % make
7312 # echo a
7313 # a
7314 #
7315 # Dependency `../a' was found in `sub/../a', but this make
7316 # implementation simplified it as `a'. (Note that the sub/
7317 # directory does not even exist.)
7318 #
7319 # This kind of VPATH rewriting seems hard to cancel. The
7320 # distdir.am hack against VPATH rewriting works only when no
7321 # simplification is done, i.e., for dependencies which are in
7322 # subdirectories, not in enclosing directories. Hence, in
7323 # the latter case we use a full path to make sure no VPATH
7324 # search occurs.
7325 $fullfile = '$(srcdir)/' . $fullfile
7326 if $dir =~ m,^\.\.(?:$|/),;
7328 push_dist_common ($fullfile);
7329 return 1;
7330 }
7331 return 0;
7332 }
7335 # If a file name appears as a key in this hash, then it has already
7336 # been checked for. This allows us not to report the same error more
7337 # than once.
7338 my %required_file_not_found = ();
7340 # &require_file_internal ($WHERE, $MYSTRICT, $DIRECTORY, @FILES)
7341 # --------------------------------------------------------------
7342 # Verify that the file must exist in $DIRECTORY, or install it.
7343 # $MYSTRICT is the strictness level at which this file becomes required.
7344 sub require_file_internal ($$$@)
7345 {
7346 my ($where, $mystrict, $dir, @files) = @_;
7348 foreach my $file (@files)
7349 {
7350 my $fullfile = "$dir/$file";
7351 my $found_it = 0;
7352 my $dangling_sym = 0;
7354 if (-l $fullfile && ! -f $fullfile)
7355 {
7356 $dangling_sym = 1;
7357 }
7358 elsif (dir_has_case_matching_file ($dir, $file))
7359 {
7360 $found_it = 1;
7361 maybe_push_required_file ($dir, $file, $fullfile);
7362 }
7364 # `--force-missing' only has an effect if `--add-missing' is
7365 # specified.
7366 if ($found_it && (! $add_missing || ! $force_missing))
7367 {
7368 next;
7369 }
7370 else
7371 {
7372 # If we've already looked for it, we're done. You might
7373 # wonder why we don't do this before searching for the
7374 # file. If we do that, then something like
7375 # AC_OUTPUT(subdir/foo foo) will fail to put foo.in into
7376 # DIST_COMMON.
7377 if (! $found_it)
7378 {
7379 next if defined $required_file_not_found{$fullfile};
7380 $required_file_not_found{$fullfile} = 1;
7381 }
7383 if ($strictness >= $mystrict)
7384 {
7385 if ($dangling_sym && $add_missing)
7386 {
7387 unlink ($fullfile);
7388 }
7390 my $trailer = '';
7391 my $trailer2 = '';
7392 my $suppress = 0;
7394 # Only install missing files according to our desired
7395 # strictness level.
7396 my $message = "required file `$fullfile' not found";
7397 if ($add_missing)
7398 {
7399 if (-f "$libdir/$file")
7400 {
7401 $suppress = 1;
7403 # Install the missing file. Symlink if we
7404 # can, copy if we must. Note: delete the file
7405 # first, in case it is a dangling symlink.
7406 $message = "installing `$fullfile'";
7408 # The license file should not be volatile.
7409 if ($file eq "COPYING")
7410 {
7411 $message .= " using GNU General Public License v3 file";
7412 $trailer2 = "\n Consider adding the COPYING file"
7413 . " to the version control system"
7414 . "\n for your code, to avoid questions"
7415 . " about which license your project uses.";
7416 }
7418 # Windows Perl will hang if we try to delete a
7419 # file that doesn't exist.
7420 unlink ($fullfile) if -f $fullfile;
7421 if ($symlink_exists && ! $copy_missing)
7422 {
7423 if (! symlink ("$libdir/$file", $fullfile))
7424 {
7425 $suppress = 0;
7426 $trailer = "; error while making link: $!";
7427 }
7428 }
7429 elsif (system ('cp', "$libdir/$file", $fullfile))
7430 {
7431 $suppress = 0;
7432 $trailer = "\n error while copying";
7433 }
7434 set_dir_cache_file ($dir, $file);
7435 }
7437 if (! maybe_push_required_file (dirname ($fullfile),
7438 $file, $fullfile))
7439 {
7440 if (! $found_it && ! $automake_will_process_aux_dir)
7441 {
7442 # We have added the file but could not push it
7443 # into DIST_COMMON, probably because this is
7444 # an auxiliary file and we are not processing
7445 # the top level Makefile. Furthermore Automake
7446 # hasn't been asked to create the Makefile.in
7447 # that distributes the aux dir files.
7448 error ($where, 'Please make a full run of automake'
7449 . " so $fullfile gets distributed.");
7450 }
7451 }
7452 }
7453 else
7454 {
7455 $trailer = "\n `automake --add-missing' can install `$file'"
7456 if -f "$libdir/$file";
7457 }
7459 # If --force-missing was specified, and we have
7460 # actually found the file, then do nothing.
7461 next
7462 if $found_it && $force_missing;
7464 # If we couldn't install the file, but it is a target in
7465 # the Makefile, don't print anything. This allows files
7466 # like README, AUTHORS, or THANKS to be generated.
7467 next
7468 if !$suppress && rule $file;
7470 msg ($suppress ? 'note' : 'error', $where, "$message$trailer$trailer2");
7471 }
7472 }
7473 }
7474 }
7476 # &require_file ($WHERE, $MYSTRICT, @FILES)
7477 # -----------------------------------------
7478 sub require_file ($$@)
7479 {
7480 my ($where, $mystrict, @files) = @_;
7481 require_file_internal ($where, $mystrict, $relative_dir, @files);
7482 }
7484 # &require_file_with_macro ($COND, $MACRO, $MYSTRICT, @FILES)
7485 # -----------------------------------------------------------
7486 sub require_file_with_macro ($$$@)
7487 {
7488 my ($cond, $macro, $mystrict, @files) = @_;
7489 $macro = rvar ($macro) unless ref $macro;
7490 require_file ($macro->rdef ($cond)->location, $mystrict, @files);
7491 }
7493 # &require_libsource_with_macro ($COND, $MACRO, $MYSTRICT, @FILES)
7494 # ----------------------------------------------------------------
7495 # Require an AC_LIBSOURCEd file. If AC_CONFIG_LIBOBJ_DIR was called, it
7496 # must be in that directory. Otherwise expect it in the current directory.
7497 sub require_libsource_with_macro ($$$@)
7498 {
7499 my ($cond, $macro, $mystrict, @files) = @_;
7500 $macro = rvar ($macro) unless ref $macro;
7501 if ($config_libobj_dir)
7502 {
7503 require_file_internal ($macro->rdef ($cond)->location, $mystrict,
7504 $config_libobj_dir, @files);
7505 }
7506 else
7507 {
7508 require_file ($macro->rdef ($cond)->location, $mystrict, @files);
7509 }
7510 }
7512 # Queue to push require_conf_file requirements to.
7513 my $required_conf_file_queue;
7515 # &queue_required_conf_file ($QUEUE, $KEY, $DIR, $WHERE, $MYSTRICT, @FILES)
7516 # -------------------------------------------------------------------------
7517 sub queue_required_conf_file ($$$$@)
7518 {
7519 my ($queue, $key, $dir, $where, $mystrict, @files) = @_;
7520 my @serial_loc;
7521 if (ref $where)
7522 {
7523 @serial_loc = (QUEUE_LOCATION, $where->serialize ());
7524 }
7525 else
7526 {
7527 @serial_loc = (QUEUE_STRING, $where);
7528 }
7529 $queue->enqueue ($key, $dir, @serial_loc, $mystrict, 0 + @files, @files);
7530 }
7532 # &require_queued_conf_file ($QUEUE)
7533 # ----------------------------------
7534 sub require_queued_conf_file ($)
7535 {
7536 my ($queue) = @_;
7537 my $where;
7538 my $dir = $queue->dequeue ();
7539 my $loc_key = $queue->dequeue ();
7540 if ($loc_key eq QUEUE_LOCATION)
7541 {
7542 $where = Automake::Location::deserialize ($queue);
7543 }
7544 elsif ($loc_key eq QUEUE_STRING)
7545 {
7546 $where = $queue->dequeue ();
7547 }
7548 else
7549 {
7550 prog_error "unexpected key $loc_key";
7551 }
7552 my $mystrict = $queue->dequeue ();
7553 my $nfiles = $queue->dequeue ();
7554 my @files;
7555 push @files, $queue->dequeue ()
7556 foreach (1 .. $nfiles);
7558 # Dequeuing happens outside of per-makefile context, so we have to
7559 # set the variables used by require_file_internal and the functions
7560 # it calls. Gross!
7561 $relative_dir = $dir;
7562 require_file_internal ($where, $mystrict, $config_aux_dir, @files);
7563 }
7565 # &require_conf_file ($WHERE, $MYSTRICT, @FILES)
7566 # ----------------------------------------------
7567 # Looks in configuration path, as specified by AC_CONFIG_AUX_DIR;
7568 # worker threads may queue up the action to be serialized by the master.
7569 #
7570 # FIXME: this seriously relies on the semantics of require_file_internal
7571 # and maybe_push_required_file, in that we exploit the fact that only the
7572 # contents of the last handled output file may be impacted (which in turn
7573 # is dealt with by the master thread).
7574 sub require_conf_file ($$@)
7575 {
7576 my ($where, $mystrict, @files) = @_;
7577 if (defined $required_conf_file_queue)
7578 {
7579 queue_required_conf_file ($required_conf_file_queue, QUEUE_CONF_FILE,
7580 $relative_dir, $where, $mystrict, @files);
7581 }
7582 else
7583 {
7584 require_file_internal ($where, $mystrict, $config_aux_dir, @files);
7585 }
7586 }
7589 # &require_conf_file_with_macro ($COND, $MACRO, $MYSTRICT, @FILES)
7590 # ----------------------------------------------------------------
7591 sub require_conf_file_with_macro ($$$@)
7592 {
7593 my ($cond, $macro, $mystrict, @files) = @_;
7594 require_conf_file (rvar ($macro)->rdef ($cond)->location,
7595 $mystrict, @files);
7596 }
7598 ################################################################
7600 # &require_build_directory ($DIRECTORY)
7601 # ------------------------------------
7602 # Emit rules to create $DIRECTORY if needed, and return
7603 # the file that any target requiring this directory should be made
7604 # dependent upon.
7605 # We don't want to emit the rule twice, and want to reuse it
7606 # for directories with equivalent names (e.g., `foo/bar' and `./foo//bar').
7607 sub require_build_directory ($)
7608 {
7609 my $directory = shift;
7611 return $directory_map{$directory} if exists $directory_map{$directory};
7613 my $cdir = File::Spec->canonpath ($directory);
7615 if (exists $directory_map{$cdir})
7616 {
7617 my $stamp = $directory_map{$cdir};
7618 $directory_map{$directory} = $stamp;
7619 return $stamp;
7620 }
7622 my $dirstamp = "$cdir/\$(am__dirstamp)";
7624 $directory_map{$directory} = $dirstamp;
7625 $directory_map{$cdir} = $dirstamp;
7627 # Set a variable for the dirstamp basename.
7628 define_pretty_variable ('am__dirstamp', TRUE, INTERNAL,
7629 '$(am__leading_dot)dirstamp');
7631 # Directory must be removed by `make distclean'.
7632 $clean_files{$dirstamp} = DIST_CLEAN;
7634 $output_rules .= ("$dirstamp:\n"
7635 . "\t\@\$(MKDIR_P) $directory\n"
7636 . "\t\@: > $dirstamp\n");
7638 return $dirstamp;
7639 }
7641 # &require_build_directory_maybe ($FILE)
7642 # --------------------------------------
7643 # If $FILE lies in a subdirectory, emit a rule to create this
7644 # directory and return the file that $FILE should be made
7645 # dependent upon. Otherwise, just return the empty string.
7646 sub require_build_directory_maybe ($)
7647 {
7648 my $file = shift;
7649 my $directory = dirname ($file);
7651 if ($directory ne '.')
7652 {
7653 return require_build_directory ($directory);
7654 }
7655 else
7656 {
7657 return '';
7658 }
7659 }
7661 ################################################################
7663 # Push a list of files onto dist_common.
7664 sub push_dist_common
7665 {
7666 prog_error "push_dist_common run after handle_dist"
7667 if $handle_dist_run;
7668 Automake::Variable::define ('DIST_COMMON', VAR_AUTOMAKE, '+', TRUE, "@_",
7669 '', INTERNAL, VAR_PRETTY);
7670 }
7673 ################################################################
7675 # generate_makefile ($MAKEFILE_AM, $MAKEFILE_IN)
7676 # ----------------------------------------------
7677 # Generate a Makefile.in given the name of the corresponding Makefile and
7678 # the name of the file output by config.status.
7679 sub generate_makefile ($$)
7680 {
7681 my ($makefile_am, $makefile_in) = @_;
7683 # Reset all the Makefile.am related variables.
7684 initialize_per_input;
7686 # AUTOMAKE_OPTIONS can contains -W flags to disable or enable
7687 # warnings for this file. So hold any warning issued before
7688 # we have processed AUTOMAKE_OPTIONS.
7689 buffer_messages ('warning');
7691 # Name of input file ("Makefile.am") and output file
7692 # ("Makefile.in"). These have no directory components.
7693 $am_file_name = basename ($makefile_am);
7694 $in_file_name = basename ($makefile_in);
7696 # $OUTPUT is encoded. If it contains a ":" then the first element
7697 # is the real output file, and all remaining elements are input
7698 # files. We don't scan or otherwise deal with these input files,
7699 # other than to mark them as dependencies. See
7700 # &scan_autoconf_files for details.
7701 my ($makefile, @inputs) = split (/:/, $output_files{$makefile_in});
7703 $relative_dir = dirname ($makefile);
7704 $am_relative_dir = dirname ($makefile_am);
7705 $topsrcdir = backname ($relative_dir);
7707 read_main_am_file ($makefile_am);
7708 if (handle_options)
7709 {
7710 # Process buffered warnings.
7711 flush_messages;
7712 # Fatal error. Just return, so we can continue with next file.
7713 return;
7714 }
7715 # Process buffered warnings.
7716 flush_messages;
7718 # There are a few install-related variables that you should not define.
7719 foreach my $var ('PRE_INSTALL', 'POST_INSTALL', 'NORMAL_INSTALL')
7720 {
7721 my $v = var $var;
7722 if ($v)
7723 {
7724 my $def = $v->def (TRUE);
7725 prog_error "$var not defined in condition TRUE"
7726 unless $def;
7727 reject_var $var, "`$var' should not be defined"
7728 if $def->owner != VAR_AUTOMAKE;
7729 }
7730 }
7732 # Catch some obsolete variables.
7733 msg_var ('obsolete', 'INCLUDES',
7734 "`INCLUDES' is the old name for `AM_CPPFLAGS' (or `*_CPPFLAGS')")
7735 if var ('INCLUDES');
7737 # Must do this after reading .am file.
7738 define_variable ('subdir', $relative_dir, INTERNAL);
7740 # If DIST_SUBDIRS is defined, make sure SUBDIRS is, so that
7741 # recursive rules are enabled.
7742 define_pretty_variable ('SUBDIRS', TRUE, INTERNAL, '')
7743 if var 'DIST_SUBDIRS' && ! var 'SUBDIRS';
7745 # Check first, because we might modify some state.
7746 check_cygnus;
7747 check_gnu_standards;
7748 check_gnits_standards;
7750 handle_configure ($makefile_am, $makefile_in, $makefile, @inputs);
7751 handle_gettext;
7752 handle_libraries;
7753 handle_ltlibraries;
7754 handle_programs;
7755 handle_scripts;
7757 # These must be run after all the sources are scanned. They
7758 # use variables defined by &handle_libraries, &handle_ltlibraries,
7759 # or &handle_programs.
7760 handle_compile;
7761 handle_languages;
7762 handle_libtool;
7764 # Variables used by distdir.am and tags.am.
7765 define_pretty_variable ('SOURCES', TRUE, INTERNAL, @sources);
7766 if (! option 'no-dist')
7767 {
7768 define_pretty_variable ('DIST_SOURCES', TRUE, INTERNAL, @dist_sources);
7769 }
7771 handle_multilib;
7772 handle_texinfo;
7773 handle_emacs_lisp;
7774 handle_python;
7775 handle_java;
7776 handle_man_pages;
7777 handle_data;
7778 handle_headers;
7779 handle_subdirs;
7780 handle_tags;
7781 handle_minor_options;
7782 # Must come after handle_programs so that %known_programs is up-to-date.
7783 handle_tests;
7785 # This must come after most other rules.
7786 handle_dist;
7788 handle_footer;
7789 do_check_merge_target;
7790 handle_all ($makefile);
7792 # FIXME: Gross!
7793 if (var ('lib_LTLIBRARIES') && var ('bin_PROGRAMS'))
7794 {
7795 $output_rules .= "install-binPROGRAMS: install-libLTLIBRARIES\n\n";
7796 }
7797 if (var ('nobase_lib_LTLIBRARIES') && var ('bin_PROGRAMS'))
7798 {
7799 $output_rules .= "install-binPROGRAMS: install-nobase_libLTLIBRARIES\n\n";
7800 }
7802 handle_install;
7803 handle_clean ($makefile);
7804 handle_factored_dependencies;
7806 # Comes last, because all the above procedures may have
7807 # defined or overridden variables.
7808 $output_vars .= output_variables;
7810 check_typos;
7812 my ($out_file) = $output_directory . '/' . $makefile_in;
7814 if ($exit_code != 0)
7815 {
7816 verb "not writing $out_file because of earlier errors";
7817 return;
7818 }
7820 if (! -d ($output_directory . '/' . $am_relative_dir))
7821 {
7822 mkdir ($output_directory . '/' . $am_relative_dir, 0755);
7823 }
7825 # We make sure that `all:' is the first target.
7826 my $output =
7827 "$output_vars$output_all$output_header$output_rules$output_trailer";
7829 # Decide whether we must update the output file or not.
7830 # We have to update in the following situations.
7831 # * $force_generation is set.
7832 # * any of the output dependencies is younger than the output
7833 # * the contents of the output is different (this can happen
7834 # if the project has been populated with a file listed in
7835 # @common_files since the last run).
7836 # Output's dependencies are split in two sets:
7837 # * dependencies which are also configure dependencies
7838 # These do not change between each Makefile.am
7839 # * other dependencies, specific to the Makefile.am being processed
7840 # (such as the Makefile.am itself, or any Makefile fragment
7841 # it includes).
7842 my $timestamp = mtime $out_file;
7843 if (! $force_generation
7844 && $configure_deps_greatest_timestamp < $timestamp
7845 && $output_deps_greatest_timestamp < $timestamp
7846 && $output eq contents ($out_file))
7847 {
7848 verb "$out_file unchanged";
7849 # No need to update.
7850 return;
7851 }
7853 if (-e $out_file)
7854 {
7855 unlink ($out_file)
7856 or fatal "cannot remove $out_file: $!\n";
7857 }
7859 my $gm_file = new Automake::XFile "> $out_file";
7860 verb "creating $out_file";
7861 print $gm_file $output;
7862 }
7864 ################################################################
7869 ################################################################
7871 # Print usage information.
7872 sub usage ()
7873 {
7874 print "Usage: $0 [OPTION] ... [Makefile]...
7876 Generate Makefile.in for configure from Makefile.am.
7878 Operation modes:
7879 --help print this help, then exit
7880 --version print version number, then exit
7881 -v, --verbose verbosely list files processed
7882 --no-force only update Makefile.in's that are out of date
7883 -W, --warnings=CATEGORY report the warnings falling in CATEGORY
7885 Dependency tracking:
7886 -i, --ignore-deps disable dependency tracking code
7887 --include-deps enable dependency tracking code
7889 Flavors:
7890 --cygnus assume program is part of Cygnus-style tree
7891 --foreign set strictness to foreign
7892 --gnits set strictness to gnits
7893 --gnu set strictness to gnu
7895 Library files:
7896 -a, --add-missing add missing standard files to package
7897 --libdir=DIR directory storing library files
7898 -c, --copy with -a, copy missing files (default is symlink)
7899 -f, --force-missing force update of standard files
7901 ";
7902 Automake::ChannelDefs::usage;
7904 my ($last, @lcomm);
7905 $last = '';
7906 foreach my $iter (sort ((@common_files, @common_sometimes)))
7907 {
7908 push (@lcomm, $iter) unless $iter eq $last;
7909 $last = $iter;
7910 }
7912 my @four;
7913 print "\nFiles which are automatically distributed, if found:\n";
7914 format USAGE_FORMAT =
7915 @<<<<<<<<<<<<<<<< @<<<<<<<<<<<<<<<< @<<<<<<<<<<<<<<<< @<<<<<<<<<<<<<<<<
7916 $four[0], $four[1], $four[2], $four[3]
7917 .
7918 $~ = "USAGE_FORMAT";
7920 my $cols = 4;
7921 my $rows = int(@lcomm / $cols);
7922 my $rest = @lcomm % $cols;
7924 if ($rest)
7925 {
7926 $rows++;
7927 }
7928 else
7929 {
7930 $rest = $cols;
7931 }
7933 for (my $y = 0; $y < $rows; $y++)
7934 {
7935 @four = ("", "", "", "");
7936 for (my $x = 0; $x < $cols; $x++)
7937 {
7938 last if $y + 1 == $rows && $x == $rest;
7940 my $idx = (($x > $rest)
7941 ? ($rows * $rest + ($rows - 1) * ($x - $rest))
7942 : ($rows * $x));
7944 $idx += $y;
7945 $four[$x] = $lcomm[$idx];
7946 }
7947 write;
7948 }
7950 print "\nReport bugs to <bug-automake\@gnu.org>.\n";
7952 # --help always returns 0 per GNU standards.
7953 exit 0;
7954 }
7957 # &version ()
7958 # -----------
7959 # Print version information
7960 sub version ()
7961 {
7962 print <<EOF;
7963 automake (GNU $PACKAGE) $VERSION
7964 Copyright (C) 2009 Free Software Foundation, Inc.
7965 License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html>
7966 This is free software: you are free to change and redistribute it.
7967 There is NO WARRANTY, to the extent permitted by law.
7969 Written by Tom Tromey <tromey\@redhat.com>
7970 and Alexandre Duret-Lutz <adl\@gnu.org>.
7971 EOF
7972 # --version always returns 0 per GNU standards.
7973 exit 0;
7974 }
7976 ################################################################
7978 # Parse command line.
7979 sub parse_arguments ()
7980 {
7981 # Start off as gnu.
7982 set_strictness ('gnu');
7984 my $cli_where = new Automake::Location;
7985 my %cli_options =
7986 (
7987 'libdir=s' => \$libdir,
7988 'gnu' => sub { set_strictness ('gnu'); },
7989 'gnits' => sub { set_strictness ('gnits'); },
7990 'cygnus' => sub { set_global_option ('cygnus', $cli_where); },
7991 'foreign' => sub { set_strictness ('foreign'); },
7992 'include-deps' => sub { unset_global_option ('no-dependencies'); },
7993 'i|ignore-deps' => sub { set_global_option ('no-dependencies',
7994 $cli_where); },
7995 'no-force' => sub { $force_generation = 0; },
7996 'f|force-missing' => \$force_missing,
7997 'o|output-dir=s' => \$output_directory,
7998 'a|add-missing' => \$add_missing,
7999 'c|copy' => \$copy_missing,
8000 'v|verbose' => sub { setup_channel 'verb', silent => 0; },
8001 'W|warnings=s' => \&parse_warnings,
8002 # These long options (--Werror and --Wno-error) for backward
8003 # compatibility. Use -Werror and -Wno-error today.
8004 'Werror' => sub { parse_warnings 'W', 'error'; },
8005 'Wno-error' => sub { parse_warnings 'W', 'no-error'; },
8006 );
8007 use Getopt::Long;
8008 Getopt::Long::config ("bundling", "pass_through");
8010 # See if --version or --help is used. We want to process these before
8011 # anything else because the GNU Coding Standards require us to
8012 # `exit 0' after processing these options, and we can't guarantee this
8013 # if we treat other options first. (Handling other options first
8014 # could produce error diagnostics, and in this condition it is
8015 # confusing if Automake does `exit 0'.)
8016 my %cli_options_1st_pass =
8017 (
8018 'version' => \&version,
8019 'help' => \&usage,
8020 # Recognize all other options (and their arguments) but do nothing.
8021 map { $_ => sub {} } (keys %cli_options)
8022 );
8023 my @ARGV_backup = @ARGV;
8024 Getopt::Long::GetOptions %cli_options_1st_pass
8025 or exit 1;
8026 @ARGV = @ARGV_backup;
8028 # Now *really* process the options. This time we know that --help
8029 # and --version are not present, but we specify them nonetheless so
8030 # that ambiguous abbreviation are diagnosed.
8031 Getopt::Long::GetOptions %cli_options, 'version' => sub {}, 'help' => sub {}
8032 or exit 1;
8034 if (defined $output_directory)
8035 {
8036 msg 'obsolete', "`--output-dir' is deprecated\n";
8037 }
8038 else
8039 {
8040 # In the next release we'll remove this entirely.
8041 $output_directory = '.';
8042 }
8044 return unless @ARGV;
8046 if ($ARGV[0] =~ /^-./)
8047 {
8048 my %argopts;
8049 for my $k (keys %cli_options)
8050 {
8051 if ($k =~ /(.*)=s$/)
8052 {
8053 map { $argopts{(length ($_) == 1)
8054 ? "-$_" : "--$_" } = 1; } (split (/\|/, $1));
8055 }
8056 }
8057 if ($ARGV[0] eq '--')
8058 {
8059 shift @ARGV;
8060 }
8061 elsif (exists $argopts{$ARGV[0]})
8062 {
8063 fatal ("option `$ARGV[0]' requires an argument\n"
8064 . "Try `$0 --help' for more information.");
8065 }
8066 else
8067 {
8068 fatal ("unrecognized option `$ARGV[0]'.\n"
8069 . "Try `$0 --help' for more information.");
8070 }
8071 }
8073 my $errspec = 0;
8074 foreach my $arg (@ARGV)
8075 {
8076 fatal ("empty argument\nTry `$0 --help' for more information.")
8077 if ($arg eq '');
8079 # Handle $local:$input syntax.
8080 my ($local, @rest) = split (/:/, $arg);
8081 @rest = ("$local.in",) unless @rest;
8082 my $input = locate_am @rest;
8083 if ($input)
8084 {
8085 push @input_files, $input;
8086 $output_files{$input} = join (':', ($local, @rest));
8087 }
8088 else
8089 {
8090 error "no Automake input file found for `$arg'";
8091 $errspec = 1;
8092 }
8093 }
8094 fatal "no input file found among supplied arguments"
8095 if $errspec && ! @input_files;
8096 }
8099 # handle_makefile ($MAKEFILE_IN)
8100 # ------------------------------
8101 # Deal with $MAKEFILE_IN.
8102 sub handle_makefile ($)
8103 {
8104 my ($file) = @_;
8105 ($am_file = $file) =~ s/\.in$//;
8106 if (! -f ($am_file . '.am'))
8107 {
8108 error "`$am_file.am' does not exist";
8109 }
8110 else
8111 {
8112 # Any warning setting now local to this Makefile.am.
8113 dup_channel_setup;
8115 generate_makefile ($am_file . '.am', $file);
8117 # Back out any warning setting.
8118 drop_channel_setup;
8119 }
8120 }
8122 # handle_makefiles_serial ()
8123 # --------------------------
8124 # Deal with all makefiles, without threads.
8125 sub handle_makefiles_serial ()
8126 {
8127 foreach my $file (@input_files)
8128 {
8129 handle_makefile ($file);
8130 }
8131 }
8133 # get_number_of_threads ()
8134 # ------------------------
8135 # Logic for deciding how many worker threads to use.
8136 sub get_number_of_threads
8137 {
8138 my $nthreads = $ENV{'AUTOMAKE_JOBS'} || 0;
8140 $nthreads = 0
8141 unless $nthreads =~ /^[0-9]+$/;
8143 # It doesn't make sense to use more threads than makefiles,
8144 my $max_threads = @input_files;
8146 # but a single worker thread is helpful for exposing bugs.
8147 if ($automake_will_process_aux_dir && $max_threads > 1)
8148 {
8149 $max_threads--;
8150 }
8151 if ($nthreads > $max_threads)
8152 {
8153 $nthreads = $max_threads;
8154 }
8155 return $nthreads;
8156 }
8158 # handle_makefiles_threaded ($NTHREADS)
8159 # -------------------------------------
8160 # Deal with all makefiles, using threads. The general strategy is to
8161 # spawn NTHREADS worker threads, dispatch makefiles to them, and let the
8162 # worker threads push back everything that needs serialization:
8163 # * warning and (normal) error messages, for stable stderr output
8164 # order and content (avoiding duplicates, for example),
8165 # * races when installing aux files (and respective messages),
8166 # * races when collecting aux files for distribution.
8167 #
8168 # The latter requires that the makefile that deals with the aux dir
8169 # files be handled last, done by the master thread.
8170 sub handle_makefiles_threaded ($)
8171 {
8172 my ($nthreads) = @_;
8174 my @queued_input_files = @input_files;
8175 my $last_input_file = undef;
8176 if ($automake_will_process_aux_dir)
8177 {
8178 $last_input_file = pop @queued_input_files;
8179 }
8181 # The file queue distributes all makefiles, the message queues
8182 # collect all serializations needed for respective files.
8183 my $file_queue = Thread::Queue->new;
8184 my %msg_queues;
8185 foreach my $file (@queued_input_files)
8186 {
8187 $msg_queues{$file} = Thread::Queue->new;
8188 }
8190 verb "spawning $nthreads worker threads";
8191 my @threads = (1 .. $nthreads);
8192 foreach my $t (@threads)
8193 {
8194 $t = threads->new (sub
8195 {
8196 while (my $file = $file_queue->dequeue)
8197 {
8198 verb "handling $file";
8199 my $queue = $msg_queues{$file};
8200 setup_channel_queue ($queue, QUEUE_MESSAGE);
8201 $required_conf_file_queue = $queue;
8202 handle_makefile ($file);
8203 $queue->enqueue (undef);
8204 setup_channel_queue (undef, undef);
8205 $required_conf_file_queue = undef;
8206 }
8207 return $exit_code;
8208 });
8209 }
8211 # Queue all normal makefiles.
8212 verb "queuing " . @queued_input_files . " input files";
8213 $file_queue->enqueue (@queued_input_files, (undef) x @threads);
8215 # Collect and process serializations.
8216 foreach my $file (@queued_input_files)
8217 {
8218 verb "dequeuing messages for " . $file;
8219 reset_local_duplicates ();
8220 my $queue = $msg_queues{$file};
8221 while (my $key = $queue->dequeue)
8222 {
8223 if ($key eq QUEUE_MESSAGE)
8224 {
8225 pop_channel_queue ($queue);
8226 }
8227 elsif ($key eq QUEUE_CONF_FILE)
8228 {
8229 require_queued_conf_file ($queue);
8230 }
8231 else
8232 {
8233 prog_error "unexpected key $key";
8234 }
8235 }
8236 }
8238 foreach my $t (@threads)
8239 {
8240 my @exit_thread = $t->join;
8241 $exit_code = $exit_thread[0]
8242 if ($exit_thread[0] > $exit_code);
8243 }
8245 # The master processes the last file.
8246 if ($automake_will_process_aux_dir)
8247 {
8248 verb "processing last input file";
8249 handle_makefile ($last_input_file);
8250 }
8251 }
8253 ################################################################
8255 # Parse the WARNINGS environment variable.
8256 parse_WARNINGS;
8258 # Parse command line.
8259 parse_arguments;
8261 $configure_ac = require_configure_ac;
8263 # Do configure.ac scan only once.
8264 scan_autoconf_files;
8266 if (! @input_files)
8267 {
8268 my $msg = '';
8269 $msg = "\nDid you forget AC_CONFIG_FILES([Makefile]) in $configure_ac?"
8270 if -f 'Makefile.am';
8271 fatal ("no `Makefile.am' found for any configure output$msg");
8272 }
8274 my $nthreads = get_number_of_threads ();
8276 if ($perl_threads && $nthreads >= 1)
8277 {
8278 handle_makefiles_threaded ($nthreads);
8279 }
8280 else
8281 {
8282 handle_makefiles_serial ();
8283 }
8285 exit $exit_code;
8288 ### Setup "GNU" style for perl-mode and cperl-mode.
8289 ## Local Variables:
8290 ## perl-indent-level: 2
8291 ## perl-continued-statement-offset: 2
8292 ## perl-continued-brace-offset: 0
8293 ## perl-brace-offset: 0
8294 ## perl-brace-imaginary-offset: 0
8295 ## perl-label-offset: -2
8296 ## cperl-indent-level: 2
8297 ## cperl-brace-offset: 0
8298 ## cperl-continued-brace-offset: 0
8299 ## cperl-label-offset: -2
8300 ## cperl-extra-newline-before-brace: t
8301 ## cperl-merge-trailing-else: nil
8302 ## cperl-continued-statement-offset: 2
8303 ## End: