| blob | 805e0e9c2a5cde082953c822dc44726bf46e0100 |
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) 1994-2012 Free Software Foundation, Inc.
11 # This program is free software; you can redistribute it and/or modify
12 # it under the terms of the GNU General Public License as published by
13 # the Free Software Foundation; either version 2, or (at your option)
14 # any later version.
16 # This program is distributed in the hope that it will be useful,
17 # but WITHOUT ANY WARRANTY; without even the implied warranty of
18 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
19 # GNU General Public License for more details.
21 # You should have received a copy of the GNU General Public License
22 # along with this program. If not, see <http://www.gnu.org/licenses/>.
24 # Originally written by David Mackenzie <djm@gnu.ai.mit.edu>.
25 # Perl reimplementation by Tom Tromey <tromey@redhat.com>, and
26 # Alexandre Duret-Lutz <adl@gnu.org>.
28 package Language;
30 BEGIN
31 {
32 @Automake::perl_libdirs = ('@datadir@/@PACKAGE@-@APIVERSION@')
33 unless @Automake::perl_libdirs;
34 unshift @INC, @Automake::perl_libdirs;
36 # Override SHELL. This is required on DJGPP so that system() uses
37 # bash, not COMMAND.COM which doesn't quote arguments properly.
38 # Other systems aren't expected to use $SHELL when Automake
39 # runs, but it should be safe to drop the "if DJGPP" guard if
40 # it turns up other systems need the same thing. After all,
41 # if SHELL is used, ./configure's SHELL is always better than
42 # the user's SHELL (which may be something like tcsh).
43 $ENV{'SHELL'} = '@SHELL@' if exists $ENV{'DJDIR'};
44 }
46 use Class::Struct ();
47 Class::Struct::struct (
48 # Short name of the language (c, f77...).
49 'name' => "\$",
50 # Nice name of the language (C, Fortran 77...).
51 'Name' => "\$",
53 # List of configure variables which must be defined.
54 'config_vars' => '@',
56 # 'pure' is '1' or ''. A 'pure' language is one where, if
57 # all the files in a directory are of that language, then we
58 # do not require the C compiler or any code to call it.
59 'pure' => "\$",
61 'autodep' => "\$",
63 # Name of the compiling variable (COMPILE).
64 'compiler' => "\$",
65 # Content of the compiling variable.
66 'compile' => "\$",
67 # Flag to require compilation without linking (-c).
68 'compile_flag' => "\$",
69 'extensions' => '@',
70 # A subroutine to compute a list of possible extensions of
71 # the product given the input extensions.
72 # (defaults to a subroutine which returns ('.$(OBJEXT)', '.lo'))
73 'output_extensions' => "\$",
74 # A list of flag variables used in 'compile'.
75 # (defaults to [])
76 'flags' => "@",
78 # Any tag to pass to libtool while compiling.
79 'libtool_tag' => "\$",
81 # The file to use when generating rules for this language.
82 # The default is 'depend2'.
83 'rule_file' => "\$",
85 # Name of the linking variable (LINK).
86 'linker' => "\$",
87 # Content of the linking variable.
88 'link' => "\$",
90 # Name of the compiler variable (CC).
91 'ccer' => "\$",
93 # Name of the linker variable (LD).
94 'lder' => "\$",
95 # Content of the linker variable ($(CC)).
96 'ld' => "\$",
98 # Flag to specify the output file (-o).
99 'output_flag' => "\$",
100 '_finish' => "\$",
102 # This is a subroutine which is called whenever we finally
103 # determine the context in which a source file will be
104 # compiled.
105 '_target_hook' => "\$",
107 # If TRUE, nodist_ sources will be compiled using specific rules
108 # (i.e. not inference rules). The default is FALSE.
109 'nodist_specific' => "\$");
112 sub finish ($)
113 {
114 my ($self) = @_;
115 if (defined $self->_finish)
116 {
117 &{$self->_finish} (@_);
118 }
119 }
121 sub target_hook ($$$$%)
122 {
123 my ($self) = @_;
124 if (defined $self->_target_hook)
125 {
126 &{$self->_target_hook} (@_);
127 }
128 }
130 package Automake;
132 use strict;
133 use Automake::Config;
134 BEGIN
135 {
136 if ($perl_threads)
137 {
138 require threads;
139 import threads;
140 require Thread::Queue;
141 import Thread::Queue;
142 }
143 }
144 use Automake::General;
145 use Automake::XFile;
146 use Automake::Channels;
147 use Automake::ChannelDefs;
148 use Automake::Configure_ac;
149 use Automake::FileUtils;
150 use Automake::Location;
151 use Automake::Condition qw/TRUE FALSE/;
152 use Automake::DisjConditions;
153 use Automake::Options;
154 use Automake::Variable;
155 use Automake::VarDef;
156 use Automake::Rule;
157 use Automake::RuleDef;
158 use Automake::Wrap 'makefile_wrap';
159 use File::Basename;
160 use File::Spec;
161 use Carp;
163 ## ----------- ##
164 ## Constants. ##
165 ## ----------- ##
167 # Some regular expressions. One reason to put them here is that it
168 # makes indentation work better in Emacs.
170 # Writing singled-quoted-$-terminated regexes is a pain because
171 # perl-mode thinks of $' as the ${'} variable (instead of a $ followed
172 # by a closing quote. Letting perl-mode think the quote is not closed
173 # leads to all sort of misindentations. On the other hand, defining
174 # regexes as double-quoted strings is far less readable. So usually
175 # we will write:
176 #
177 # $REGEX = '^regex_value' . "\$";
179 my $IGNORE_PATTERN = '^\s*##([^#\n].*)?\n';
180 my $WHITE_PATTERN = '^\s*' . "\$";
181 my $COMMENT_PATTERN = '^#';
182 my $TARGET_PATTERN='[$a-zA-Z0-9_.@%][-.a-zA-Z0-9_(){}/$+@%]*';
183 # A rule has three parts: a list of targets, a list of dependencies,
184 # and optionally actions.
185 my $RULE_PATTERN =
186 "^($TARGET_PATTERN(?:(?:\\\\\n|\\s)+$TARGET_PATTERN)*) *:([^=].*|)\$";
188 # Only recognize leading spaces, not leading tabs. If we recognize
189 # leading tabs here then we need to make the reader smarter, because
190 # otherwise it will think rules like 'foo=bar; \' are errors.
191 my $ASSIGNMENT_PATTERN = '^ *([^ \t=:+]*)\s*([:+]?)=\s*(.*)' . "\$";
192 # This pattern recognizes a Gnits version id and sets $1 if the
193 # release is an alpha release. We also allow a suffix which can be
194 # used to extend the version number with a "fork" identifier.
195 my $GNITS_VERSION_PATTERN = '\d+\.\d+([a-z]|\.\d+)?(-[A-Za-z0-9]+)?';
197 my $IF_PATTERN = '^if\s+(!?)\s*([A-Za-z][A-Za-z0-9_]*)\s*(?:#.*)?' . "\$";
198 my $ELSE_PATTERN =
199 '^else(?:\s+(!?)\s*([A-Za-z][A-Za-z0-9_]*))?\s*(?:#.*)?' . "\$";
200 my $ENDIF_PATTERN =
201 '^endif(?:\s+(!?)\s*([A-Za-z][A-Za-z0-9_]*))?\s*(?:#.*)?' . "\$";
202 my $PATH_PATTERN = '(\w|[+/.-])+';
203 # This will pass through anything not of the prescribed form.
204 my $INCLUDE_PATTERN = ('^include\s+'
205 . '((\$\(top_srcdir\)/' . $PATH_PATTERN . ')'
206 . '|(\$\(srcdir\)/' . $PATH_PATTERN . ')'
207 . '|([^/\$]' . $PATH_PATTERN . '))\s*(#.*)?' . "\$");
209 # Directories installed during 'install-exec' phase.
210 my $EXEC_DIR_PATTERN =
211 '^(?:bin|sbin|libexec|sysconf|localstate|lib|pkglib|.*exec.*)' . "\$";
213 # Values for AC_CANONICAL_*
214 use constant AC_CANONICAL_BUILD => 1;
215 use constant AC_CANONICAL_HOST => 2;
216 use constant AC_CANONICAL_TARGET => 3;
218 # Values indicating when something should be cleaned.
219 use constant MOSTLY_CLEAN => 0;
220 use constant CLEAN => 1;
221 use constant DIST_CLEAN => 2;
222 use constant MAINTAINER_CLEAN => 3;
224 # Libtool files.
225 my @libtool_files = qw(ltmain.sh config.guess config.sub);
226 # ltconfig appears here for compatibility with old versions of libtool.
227 my @libtool_sometimes = qw(ltconfig ltcf-c.sh ltcf-cxx.sh ltcf-gcj.sh);
229 # Commonly found files we look for and automatically include in
230 # DISTFILES.
231 my @common_files =
232 (qw(ABOUT-GNU ABOUT-NLS AUTHORS BACKLOG COPYING COPYING.DOC COPYING.LIB
233 COPYING.LESSER ChangeLog INSTALL NEWS README THANKS TODO
234 ar-lib compile config.guess config.rpath
235 config.sub depcomp install-sh libversion.in mdate-sh
236 missing mkinstalldirs py-compile texinfo.tex ylwrap),
237 @libtool_files, @libtool_sometimes);
239 # Commonly used files we auto-include, but only sometimes. This list
240 # is used for the --help output only.
241 my @common_sometimes =
242 qw(aclocal.m4 acconfig.h config.h.top config.h.bot configure
243 configure.ac configure.in stamp-vti);
245 # Standard directories from the GNU Coding Standards, and additional
246 # pkg* directories from Automake. Stored in a hash for fast member check.
247 my %standard_prefix =
248 map { $_ => 1 } (qw(bin data dataroot doc dvi exec html include info
249 lib libexec lisp locale localstate man man1 man2
250 man3 man4 man5 man6 man7 man8 man9 oldinclude pdf
251 pkgdata pkginclude pkglib pkglibexec ps sbin
252 sharedstate sysconf));
254 # Copyright on generated Makefile.ins.
255 my $gen_copyright = "\
256 # Copyright (C) 1994-$RELEASE_YEAR Free Software Foundation, Inc.
258 # This Makefile.in is free software; the Free Software Foundation
259 # gives unlimited permission to copy and/or distribute it,
260 # with or without modifications, as long as this notice is preserved.
262 # This program is distributed in the hope that it will be useful,
263 # but WITHOUT ANY WARRANTY, to the extent permitted by law; without
264 # even the implied warranty of MERCHANTABILITY or FITNESS FOR A
265 # PARTICULAR PURPOSE.
266 ";
268 # These constants are returned by the lang_*_rewrite functions.
269 # LANG_SUBDIR means that the resulting object file should be in a
270 # subdir if the source file is. In this case the file name cannot
271 # have '..' components.
272 use constant LANG_IGNORE => 0;
273 use constant LANG_PROCESS => 1;
274 use constant LANG_SUBDIR => 2;
276 # These are used when keeping track of whether an object can be built
277 # by two different paths.
278 use constant COMPILE_LIBTOOL => 1;
279 use constant COMPILE_ORDINARY => 2;
281 # We can't always associate a location to a variable or a rule,
282 # when it's defined by Automake. We use INTERNAL in this case.
283 use constant INTERNAL => new Automake::Location;
285 # Serialization keys for message queues.
286 use constant QUEUE_MESSAGE => "msg";
287 use constant QUEUE_CONF_FILE => "conf file";
288 use constant QUEUE_LOCATION => "location";
289 use constant QUEUE_STRING => "string";
291 ## ---------------------------------- ##
292 ## Variables related to the options. ##
293 ## ---------------------------------- ##
295 # TRUE if we should always generate Makefile.in.
296 my $force_generation = 1;
298 # From the Perl manual.
299 my $symlink_exists = (eval 'symlink ("", "");', $@ eq '');
301 # TRUE if missing standard files should be installed.
302 my $add_missing = 0;
304 # TRUE if we should copy missing files; otherwise symlink if possible.
305 my $copy_missing = 0;
307 # TRUE if we should always update files that we know about.
308 my $force_missing = 0;
311 ## ---------------------------------------- ##
312 ## Variables filled during files scanning. ##
313 ## ---------------------------------------- ##
315 # Name of the configure.ac file.
316 my $configure_ac;
318 # Files found by scanning configure.ac for LIBOBJS.
319 my %libsources = ();
321 # Names used in AC_CONFIG_HEADER call.
322 my @config_headers = ();
324 # Names used in AC_CONFIG_LINKS call.
325 my @config_links = ();
327 # List of Makefile.am's to process, and their corresponding outputs.
328 my @input_files = ();
329 my %output_files = ();
331 # Complete list of Makefile.am's that exist.
332 my @configure_input_files = ();
334 # List of files in AC_CONFIG_FILES/AC_OUTPUT without Makefile.am's,
335 # and their outputs.
336 my @other_input_files = ();
337 # Where each AC_CONFIG_FILES/AC_OUTPUT/AC_CONFIG_LINK/AC_CONFIG_HEADER appears.
338 # The keys are the files created by these macros.
339 my %ac_config_files_location = ();
340 # The condition under which AC_CONFIG_FOOS appears.
341 my %ac_config_files_condition = ();
343 # Directory to search for configure-required files. This
344 # will be computed by &locate_aux_dir and can be set using
345 # AC_CONFIG_AUX_DIR in configure.ac.
346 # $CONFIG_AUX_DIR is the 'raw' directory, valid only in the source-tree.
347 my $config_aux_dir = '';
348 my $config_aux_dir_set_in_configure_ac = 0;
349 # $AM_CONFIG_AUX_DIR is prefixed with $(top_srcdir), so it can be used
350 # in Makefiles.
351 my $am_config_aux_dir = '';
353 # Directory to search for AC_LIBSOURCE files, as set by AC_CONFIG_LIBOBJ_DIR
354 # in configure.ac.
355 my $config_libobj_dir = '';
357 # Whether AM_GNU_GETTEXT has been seen in configure.ac.
358 my $seen_gettext = 0;
359 # Whether AM_GNU_GETTEXT([external]) is used.
360 my $seen_gettext_external = 0;
361 # Where AM_GNU_GETTEXT appears.
362 my $ac_gettext_location;
363 # Whether AM_GNU_GETTEXT_INTL_SUBDIR has been seen.
364 my $seen_gettext_intl = 0;
366 # The arguments of the AM_EXTRA_RECURSIVE_TARGETS call (if any).
367 my @extra_recursive_targets = ();
369 # Lists of tags supported by Libtool.
370 my %libtool_tags = ();
371 # 1 if Libtool uses LT_SUPPORTED_TAG. If it does, then it also
372 # uses AC_REQUIRE_AUX_FILE.
373 my $libtool_new_api = 0;
375 # Most important AC_CANONICAL_* macro seen so far.
376 my $seen_canonical = 0;
378 # Where AM_MAINTAINER_MODE appears.
379 my $seen_maint_mode;
381 # Actual version we've seen.
382 my $package_version = '';
384 # Where version is defined.
385 my $package_version_location;
387 # TRUE if we've seen AM_PROG_AR
388 my $seen_ar = 0;
390 # TRUE if we've seen AM_PROG_CC_C_O
391 my $seen_cc_c_o = 0;
393 # Location of AC_REQUIRE_AUX_FILE calls, indexed by their argument.
394 my %required_aux_file = ();
396 # Where AM_INIT_AUTOMAKE is called;
397 my $seen_init_automake = 0;
399 # TRUE if we've seen AM_AUTOMAKE_VERSION.
400 my $seen_automake_version = 0;
402 # Hash table of discovered configure substitutions. Keys are names,
403 # values are 'FILE:LINE' strings which are used by error message
404 # generation.
405 my %configure_vars = ();
407 # Ignored configure substitutions (i.e., variables not to be output in
408 # Makefile.in)
409 my %ignored_configure_vars = ();
411 # Files included by $configure_ac.
412 my @configure_deps = ();
414 # Greatest timestamp of configure's dependencies.
415 my $configure_deps_greatest_timestamp = 0;
417 # Hash table of AM_CONDITIONAL variables seen in configure.
418 my %configure_cond = ();
420 # This maps extensions onto language names.
421 my %extension_map = ();
423 # List of the DIST_COMMON files we discovered while reading
424 # configure.ac.
425 my $configure_dist_common = '';
427 # This maps languages names onto objects.
428 my %languages = ();
429 # Maps each linker variable onto a language object.
430 my %link_languages = ();
432 # maps extensions to needed source flags.
433 my %sourceflags = ();
435 # List of targets we must always output.
436 # FIXME: Complete, and remove falsely required targets.
437 my %required_targets =
438 (
439 'all' => 1,
440 'dvi' => 1,
441 'pdf' => 1,
442 'ps' => 1,
443 'info' => 1,
444 'install-info' => 1,
445 'install' => 1,
446 'install-data' => 1,
447 'install-exec' => 1,
448 'uninstall' => 1,
450 # FIXME: Not required, temporary hacks.
451 # Well, actually they are sort of required: the -recursive
452 # targets will run them anyway...
453 'html-am' => 1,
454 'dvi-am' => 1,
455 'pdf-am' => 1,
456 'ps-am' => 1,
457 'info-am' => 1,
458 'install-data-am' => 1,
459 'install-exec-am' => 1,
460 'install-html-am' => 1,
461 'install-dvi-am' => 1,
462 'install-pdf-am' => 1,
463 'install-ps-am' => 1,
464 'install-info-am' => 1,
465 'installcheck-am' => 1,
466 'uninstall-am' => 1,
467 'tags-am' => 1,
468 'ctags-am' => 1,
469 'cscopelist-am' => 1,
470 'install-man' => 1,
471 );
473 # Queue to push require_conf_file requirements to.
474 my $required_conf_file_queue;
476 # The name of the Makefile currently being processed.
477 my $am_file = 'BUG';
479 ################################################################
481 ## ------------------------------------------ ##
482 ## Variables reset by &initialize_per_input. ##
483 ## ------------------------------------------ ##
485 # Relative dir of the output makefile.
486 my $relative_dir;
488 # Greatest timestamp of the output's dependencies (excluding
489 # configure's dependencies).
490 my $output_deps_greatest_timestamp;
492 # These variables are used when generating each Makefile.in.
493 # They hold the Makefile.in until it is ready to be printed.
494 my $output_vars;
495 my $output_all;
496 my $output_header;
497 my $output_rules;
498 my $output_trailer;
500 # This is the conditional stack, updated on if/else/endif, and
501 # used to build Condition objects.
502 my @cond_stack;
504 # This holds the set of included files.
505 my @include_stack;
507 # List of dependencies for the obvious targets.
508 my @all;
509 my @check;
510 my @check_tests;
512 # Keys in this hash table are files to delete. The associated
513 # value tells when this should happen (MOSTLY_CLEAN, DIST_CLEAN, etc.)
514 my %clean_files;
516 # Keys in this hash table are object files or other files in
517 # subdirectories which need to be removed. This only holds files
518 # which are created by compilations. The value in the hash indicates
519 # when the file should be removed.
520 my %compile_clean_files;
522 # Keys in this hash table are directories where we expect to build a
523 # libtool object. We use this information to decide what directories
524 # to delete.
525 my %libtool_clean_directories;
527 # Value of $(SOURCES), used by tags.am.
528 my @sources;
529 # Sources which go in the distribution.
530 my @dist_sources;
532 # This hash maps object file names onto their corresponding source
533 # file names. This is used to ensure that each object is created
534 # by a single source file.
535 my %object_map;
537 # This hash maps object file names onto an integer value representing
538 # whether this object has been built via ordinary compilation or
539 # libtool compilation (the COMPILE_* constants).
540 my %object_compilation_map;
543 # This keeps track of the directories for which we've already
544 # created dirstamp code. Keys are directories, values are stamp files.
545 # Several keys can share the same stamp files if they are equivalent
546 # (as are './/foo' and 'foo').
547 my %directory_map;
549 # All .P files.
550 my %dep_files;
552 # This is a list of all targets to run during "make dist".
553 my @dist_targets;
555 # Keep track of all programs declared in this Makefile, without
556 # $(EXEEXT). @substitutions@ are not listed.
557 my %known_programs;
558 my %known_libraries;
560 # This keeps track of which extensions we've seen (that we care
561 # about).
562 my %extension_seen;
564 # This is random scratch space for the language finish functions.
565 # Don't randomly overwrite it; examine other uses of keys first.
566 my %language_scratch;
568 # We keep track of which objects need special (per-executable)
569 # handling on a per-language basis.
570 my %lang_specific_files;
572 # This is set when 'handle_dist' has finished. Once this happens,
573 # we should no longer push on dist_common.
574 my $handle_dist_run;
576 # Used to store a set of linkers needed to generate the sources currently
577 # under consideration.
578 my %linkers_used;
580 # True if we need 'LINK' defined. This is a hack.
581 my $need_link;
583 # Does the generated Makefile have to build some compiled object
584 # (for binary programs, or plain or libtool libraries)?
585 my $must_handle_compiled_objects;
587 # Record each file processed by make_paragraphs.
588 my %transformed_files;
590 ################################################################
592 ## ---------------------------------------------- ##
593 ## Variables not reset by &initialize_per_input. ##
594 ## ---------------------------------------------- ##
596 # Cache each file processed by make_paragraphs.
597 # (This is different from %transformed_files because
598 # %transformed_files is reset for each file while %am_file_cache
599 # it global to the run.)
600 my %am_file_cache;
602 ################################################################
604 # var_SUFFIXES_trigger ($TYPE, $VALUE)
605 # ------------------------------------
606 # This is called by Automake::Variable::define() when SUFFIXES
607 # is defined ($TYPE eq '') or appended ($TYPE eq '+').
608 # The work here needs to be performed as a side-effect of the
609 # macro_define() call because SUFFIXES definitions impact
610 # on $KNOWN_EXTENSIONS_PATTERN which is used used when parsing
611 # the input am file.
612 sub var_SUFFIXES_trigger ($$)
613 {
614 my ($type, $value) = @_;
615 accept_extensions (split (' ', $value));
616 }
617 Automake::Variable::hook ('SUFFIXES', \&var_SUFFIXES_trigger);
619 ################################################################
621 ## --------------------------------- ##
622 ## Forward subroutine declarations. ##
623 ## --------------------------------- ##
624 sub register_language (%);
625 sub file_contents_internal ($$$%);
626 sub define_files_variable ($\@$$);
629 # &initialize_per_input ()
630 # ------------------------
631 # (Re)-Initialize per-Makefile.am variables.
632 sub initialize_per_input ()
633 {
634 reset_local_duplicates ();
636 $relative_dir = undef;
638 $output_deps_greatest_timestamp = 0;
640 $output_vars = '';
641 $output_all = '';
642 $output_header = '';
643 $output_rules = '';
644 $output_trailer = '';
646 Automake::Options::reset;
647 Automake::Variable::reset;
648 Automake::Rule::reset;
650 @cond_stack = ();
652 @include_stack = ();
654 @all = ();
655 @check = ();
656 @check_tests = ();
658 %clean_files = ();
659 %compile_clean_files = ();
661 # We always include '.'. This isn't strictly correct.
662 %libtool_clean_directories = ('.' => 1);
664 @sources = ();
665 @dist_sources = ();
667 %object_map = ();
668 %object_compilation_map = ();
670 %directory_map = ();
672 %dep_files = ();
674 @dist_targets = ();
676 %known_programs = ();
677 %known_libraries= ();
679 %extension_seen = ();
681 %language_scratch = ();
683 %lang_specific_files = ();
685 $handle_dist_run = 0;
687 $need_link = 0;
689 $must_handle_compiled_objects = 0;
691 %transformed_files = ();
692 }
695 ################################################################
697 # Initialize our list of languages that are internally supported.
699 # C.
700 register_language ('name' => 'c',
701 'Name' => 'C',
702 'config_vars' => ['CC'],
703 'autodep' => '',
704 'flags' => ['CFLAGS', 'CPPFLAGS'],
705 'ccer' => 'CC',
706 'compiler' => 'COMPILE',
707 'compile' => '$(CC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS) $(CPPFLAGS) $(AM_CFLAGS) $(CFLAGS)',
708 'lder' => 'CCLD',
709 'ld' => '$(CC)',
710 'linker' => 'LINK',
711 'link' => '$(CCLD) $(AM_CFLAGS) $(CFLAGS) $(AM_LDFLAGS) $(LDFLAGS) -o $@',
712 'compile_flag' => '-c',
713 'libtool_tag' => 'CC',
714 'extensions' => ['.c']);
716 # C++.
717 register_language ('name' => 'cxx',
718 'Name' => 'C++',
719 'config_vars' => ['CXX'],
720 'linker' => 'CXXLINK',
721 'link' => '$(CXXLD) $(AM_CXXFLAGS) $(CXXFLAGS) $(AM_LDFLAGS) $(LDFLAGS) -o $@',
722 'autodep' => 'CXX',
723 'flags' => ['CXXFLAGS', 'CPPFLAGS'],
724 'compile' => '$(CXX) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS) $(CPPFLAGS) $(AM_CXXFLAGS) $(CXXFLAGS)',
725 'ccer' => 'CXX',
726 'compiler' => 'CXXCOMPILE',
727 'compile_flag' => '-c',
728 'output_flag' => '-o',
729 'libtool_tag' => 'CXX',
730 'lder' => 'CXXLD',
731 'ld' => '$(CXX)',
732 'pure' => 1,
733 'extensions' => ['.c++', '.cc', '.cpp', '.cxx', '.C']);
735 # Objective C.
736 register_language ('name' => 'objc',
737 'Name' => 'Objective C',
738 'config_vars' => ['OBJC'],
739 'linker' => 'OBJCLINK',
740 'link' => '$(OBJCLD) $(AM_OBJCFLAGS) $(OBJCFLAGS) $(AM_LDFLAGS) $(LDFLAGS) -o $@',
741 'autodep' => 'OBJC',
742 'flags' => ['OBJCFLAGS', 'CPPFLAGS'],
743 'compile' => '$(OBJC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS) $(CPPFLAGS) $(AM_OBJCFLAGS) $(OBJCFLAGS)',
744 'ccer' => 'OBJC',
745 'compiler' => 'OBJCCOMPILE',
746 'compile_flag' => '-c',
747 'output_flag' => '-o',
748 'lder' => 'OBJCLD',
749 'ld' => '$(OBJC)',
750 'pure' => 1,
751 'extensions' => ['.m']);
753 # Objective C++.
754 register_language ('name' => 'objcxx',
755 'Name' => 'Objective C++',
756 'config_vars' => ['OBJCXX'],
757 'linker' => 'OBJCXXLINK',
758 'link' => '$(OBJCXXLD) $(AM_OBJCXXFLAGS) $(OBJCXXFLAGS) $(AM_LDFLAGS) $(LDFLAGS) -o $@',
759 'autodep' => 'OBJCXX',
760 'flags' => ['OBJCXXFLAGS', 'CPPFLAGS'],
761 'compile' => '$(OBJCXX) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS) $(CPPFLAGS) $(AM_OBJCXXFLAGS) $(OBJCXXFLAGS)',
762 'ccer' => 'OBJCXX',
763 'compiler' => 'OBJCXXCOMPILE',
764 'compile_flag' => '-c',
765 'output_flag' => '-o',
766 'lder' => 'OBJCXXLD',
767 'ld' => '$(OBJCXX)',
768 'pure' => 1,
769 'extensions' => ['.mm']);
771 # Unified Parallel C.
772 register_language ('name' => 'upc',
773 'Name' => 'Unified Parallel C',
774 'config_vars' => ['UPC'],
775 'linker' => 'UPCLINK',
776 'link' => '$(UPCLD) $(AM_UPCFLAGS) $(UPCFLAGS) $(AM_LDFLAGS) $(LDFLAGS) -o $@',
777 'autodep' => 'UPC',
778 'flags' => ['UPCFLAGS', 'CPPFLAGS'],
779 'compile' => '$(UPC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS) $(CPPFLAGS) $(AM_UPCFLAGS) $(UPCFLAGS)',
780 'ccer' => 'UPC',
781 'compiler' => 'UPCCOMPILE',
782 'compile_flag' => '-c',
783 'output_flag' => '-o',
784 'lder' => 'UPCLD',
785 'ld' => '$(UPC)',
786 'pure' => 1,
787 'extensions' => ['.upc']);
789 # Headers.
790 register_language ('name' => 'header',
791 'Name' => 'Header',
792 'extensions' => ['.h', '.H', '.hxx', '.h++', '.hh',
793 '.hpp', '.inc'],
794 # No output.
795 'output_extensions' => sub { return () },
796 # Nothing to do.
797 '_finish' => sub { });
799 # Vala
800 register_language ('name' => 'vala',
801 'Name' => 'Vala',
802 'config_vars' => ['VALAC'],
803 'flags' => [],
804 'compile' => '$(VALAC) $(AM_VALAFLAGS) $(VALAFLAGS)',
805 'ccer' => 'VALAC',
806 'compiler' => 'VALACOMPILE',
807 'extensions' => ['.vala'],
808 'output_extensions' => sub { (my $ext = $_[0]) =~ s/vala$/c/;
809 return ($ext,) },
810 'rule_file' => 'vala',
811 '_finish' => \&lang_vala_finish,
812 '_target_hook' => \&lang_vala_target_hook,
813 'nodist_specific' => 1);
815 # Yacc (C & C++).
816 register_language ('name' => 'yacc',
817 'Name' => 'Yacc',
818 'config_vars' => ['YACC'],
819 'flags' => ['YFLAGS'],
820 'compile' => '$(YACC) $(AM_YFLAGS) $(YFLAGS)',
821 'ccer' => 'YACC',
822 'compiler' => 'YACCCOMPILE',
823 'extensions' => ['.y'],
824 'output_extensions' => sub { (my $ext = $_[0]) =~ tr/y/c/;
825 return ($ext,) },
826 'rule_file' => 'yacc',
827 '_finish' => \&lang_yacc_finish,
828 '_target_hook' => \&lang_yacc_target_hook,
829 'nodist_specific' => 1);
830 register_language ('name' => 'yaccxx',
831 'Name' => 'Yacc (C++)',
832 'config_vars' => ['YACC'],
833 'rule_file' => 'yacc',
834 'flags' => ['YFLAGS'],
835 'ccer' => 'YACC',
836 'compiler' => 'YACCCOMPILE',
837 'compile' => '$(YACC) $(AM_YFLAGS) $(YFLAGS)',
838 'extensions' => ['.y++', '.yy', '.yxx', '.ypp'],
839 'output_extensions' => sub { (my $ext = $_[0]) =~ tr/y/c/;
840 return ($ext,) },
841 '_finish' => \&lang_yacc_finish,
842 '_target_hook' => \&lang_yacc_target_hook,
843 'nodist_specific' => 1);
845 # Lex (C & C++).
846 register_language ('name' => 'lex',
847 'Name' => 'Lex',
848 'config_vars' => ['LEX'],
849 'rule_file' => 'lex',
850 'flags' => ['LFLAGS'],
851 'compile' => '$(LEX) $(AM_LFLAGS) $(LFLAGS)',
852 'ccer' => 'LEX',
853 'compiler' => 'LEXCOMPILE',
854 'extensions' => ['.l'],
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);
860 register_language ('name' => 'lexxx',
861 'Name' => 'Lex (C++)',
862 'config_vars' => ['LEX'],
863 'rule_file' => 'lex',
864 'flags' => ['LFLAGS'],
865 'compile' => '$(LEX) $(AM_LFLAGS) $(LFLAGS)',
866 'ccer' => 'LEX',
867 'compiler' => 'LEXCOMPILE',
868 'extensions' => ['.l++', '.ll', '.lxx', '.lpp'],
869 'output_extensions' => sub { (my $ext = $_[0]) =~ tr/l/c/;
870 return ($ext,) },
871 '_finish' => \&lang_lex_finish,
872 '_target_hook' => \&lang_lex_target_hook,
873 'nodist_specific' => 1);
875 # Assembler.
876 register_language ('name' => 'asm',
877 'Name' => 'Assembler',
878 'config_vars' => ['CCAS', 'CCASFLAGS'],
880 'flags' => ['CCASFLAGS'],
881 # Users can set AM_CCASFLAGS to include DEFS, INCLUDES,
882 # or anything else required. They can also set CCAS.
883 # Or simply use Preprocessed Assembler.
884 'compile' => '$(CCAS) $(AM_CCASFLAGS) $(CCASFLAGS)',
885 'ccer' => 'CCAS',
886 'compiler' => 'CCASCOMPILE',
887 'compile_flag' => '-c',
888 'output_flag' => '-o',
889 'extensions' => ['.s']);
891 # Preprocessed Assembler.
892 register_language ('name' => 'cppasm',
893 'Name' => 'Preprocessed Assembler',
894 'config_vars' => ['CCAS', 'CCASFLAGS'],
896 'autodep' => 'CCAS',
897 'flags' => ['CCASFLAGS', 'CPPFLAGS'],
898 'compile' => '$(CCAS) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS) $(CPPFLAGS) $(AM_CCASFLAGS) $(CCASFLAGS)',
899 'ccer' => 'CPPAS',
900 'compiler' => 'CPPASCOMPILE',
901 'compile_flag' => '-c',
902 'output_flag' => '-o',
903 'extensions' => ['.S', '.sx']);
905 # Fortran 77
906 register_language ('name' => 'f77',
907 'Name' => 'Fortran 77',
908 'config_vars' => ['F77'],
909 'linker' => 'F77LINK',
910 'link' => '$(F77LD) $(AM_FFLAGS) $(FFLAGS) $(AM_LDFLAGS) $(LDFLAGS) -o $@',
911 'flags' => ['FFLAGS'],
912 'compile' => '$(F77) $(AM_FFLAGS) $(FFLAGS)',
913 'ccer' => 'F77',
914 'compiler' => 'F77COMPILE',
915 'compile_flag' => '-c',
916 'output_flag' => '-o',
917 'libtool_tag' => 'F77',
918 'lder' => 'F77LD',
919 'ld' => '$(F77)',
920 'pure' => 1,
921 'extensions' => ['.f', '.for']);
923 # Fortran
924 register_language ('name' => 'fc',
925 'Name' => 'Fortran',
926 'config_vars' => ['FC'],
927 'linker' => 'FCLINK',
928 'link' => '$(FCLD) $(AM_FCFLAGS) $(FCFLAGS) $(AM_LDFLAGS) $(LDFLAGS) -o $@',
929 'flags' => ['FCFLAGS'],
930 'compile' => '$(FC) $(AM_FCFLAGS) $(FCFLAGS)',
931 'ccer' => 'FC',
932 'compiler' => 'FCCOMPILE',
933 'compile_flag' => '-c',
934 'output_flag' => '-o',
935 'libtool_tag' => 'FC',
936 'lder' => 'FCLD',
937 'ld' => '$(FC)',
938 'pure' => 1,
939 'extensions' => ['.f90', '.f95', '.f03', '.f08']);
941 # Preprocessed Fortran
942 register_language ('name' => 'ppfc',
943 'Name' => 'Preprocessed Fortran',
944 'config_vars' => ['FC'],
945 'linker' => 'FCLINK',
946 'link' => '$(FCLD) $(AM_FCFLAGS) $(FCFLAGS) $(AM_LDFLAGS) $(LDFLAGS) -o $@',
947 'lder' => 'FCLD',
948 'ld' => '$(FC)',
949 'flags' => ['FCFLAGS', 'CPPFLAGS'],
950 'ccer' => 'PPFC',
951 'compiler' => 'PPFCCOMPILE',
952 'compile' => '$(FC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS) $(CPPFLAGS) $(AM_FCFLAGS) $(FCFLAGS)',
953 'compile_flag' => '-c',
954 'output_flag' => '-o',
955 'libtool_tag' => 'FC',
956 'pure' => 1,
957 'extensions' => ['.F90','.F95', '.F03', '.F08']);
959 # Preprocessed Fortran 77
960 #
961 # The current support for preprocessing Fortran 77 just involves
962 # passing "$(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS)
963 # $(CPPFLAGS)" as additional flags to the Fortran 77 compiler, since
964 # this is how GNU Make does it; see the "GNU Make Manual, Edition 0.51
965 # for 'make' Version 3.76 Beta" (specifically, from info file
966 # '(make)Catalogue of Rules').
967 #
968 # A better approach would be to write an Autoconf test
969 # (i.e. AC_PROG_FPP) for a Fortran 77 preprocessor, because not all
970 # Fortran 77 compilers know how to do preprocessing. The Autoconf
971 # macro AC_PROG_FPP should test the Fortran 77 compiler first for
972 # preprocessing capabilities, and then fall back on cpp (if cpp were
973 # available).
974 register_language ('name' => 'ppf77',
975 'Name' => 'Preprocessed Fortran 77',
976 'config_vars' => ['F77'],
977 'linker' => 'F77LINK',
978 'link' => '$(F77LD) $(AM_FFLAGS) $(FFLAGS) $(AM_LDFLAGS) $(LDFLAGS) -o $@',
979 'lder' => 'F77LD',
980 'ld' => '$(F77)',
981 'flags' => ['FFLAGS', 'CPPFLAGS'],
982 'ccer' => 'PPF77',
983 'compiler' => 'PPF77COMPILE',
984 'compile' => '$(F77) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS) $(CPPFLAGS) $(AM_FFLAGS) $(FFLAGS)',
985 'compile_flag' => '-c',
986 'output_flag' => '-o',
987 'libtool_tag' => 'F77',
988 'pure' => 1,
989 'extensions' => ['.F']);
991 # Ratfor.
992 register_language ('name' => 'ratfor',
993 'Name' => 'Ratfor',
994 'config_vars' => ['F77'],
995 'linker' => 'F77LINK',
996 'link' => '$(F77LD) $(AM_FFLAGS) $(FFLAGS) $(AM_LDFLAGS) $(LDFLAGS) -o $@',
997 'lder' => 'F77LD',
998 'ld' => '$(F77)',
999 'flags' => ['RFLAGS', 'FFLAGS'],
1000 # FIXME also FFLAGS.
1001 'compile' => '$(F77) $(AM_FFLAGS) $(FFLAGS) $(AM_RFLAGS) $(RFLAGS)',
1002 'ccer' => 'F77',
1003 'compiler' => 'RCOMPILE',
1004 'compile_flag' => '-c',
1005 'output_flag' => '-o',
1006 'libtool_tag' => 'F77',
1007 'pure' => 1,
1008 'extensions' => ['.r']);
1010 # Java via gcj.
1011 register_language ('name' => 'java',
1012 'Name' => 'Java',
1013 'config_vars' => ['GCJ'],
1014 'linker' => 'GCJLINK',
1015 'link' => '$(GCJLD) $(AM_GCJFLAGS) $(GCJFLAGS) $(AM_LDFLAGS) $(LDFLAGS) -o $@',
1016 'autodep' => 'GCJ',
1017 'flags' => ['GCJFLAGS'],
1018 'compile' => '$(GCJ) $(AM_GCJFLAGS) $(GCJFLAGS)',
1019 'ccer' => 'GCJ',
1020 'compiler' => 'GCJCOMPILE',
1021 'compile_flag' => '-c',
1022 'output_flag' => '-o',
1023 'libtool_tag' => 'GCJ',
1024 'lder' => 'GCJLD',
1025 'ld' => '$(GCJ)',
1026 'pure' => 1,
1027 'extensions' => ['.java', '.class', '.zip', '.jar']);
1029 ################################################################
1031 # Error reporting functions.
1033 # err_am ($MESSAGE, [%OPTIONS])
1034 # -----------------------------
1035 # Uncategorized errors about the current Makefile.am.
1036 sub err_am ($;%)
1037 {
1038 msg_am ('error', @_);
1039 }
1041 # err_ac ($MESSAGE, [%OPTIONS])
1042 # -----------------------------
1043 # Uncategorized errors about configure.ac.
1044 sub err_ac ($;%)
1045 {
1046 msg_ac ('error', @_);
1047 }
1049 # msg_am ($CHANNEL, $MESSAGE, [%OPTIONS])
1050 # ---------------------------------------
1051 # Messages about about the current Makefile.am.
1052 sub msg_am ($$;%)
1053 {
1054 my ($channel, $msg, %opts) = @_;
1055 msg $channel, "${am_file}.am", $msg, %opts;
1056 }
1058 # msg_ac ($CHANNEL, $MESSAGE, [%OPTIONS])
1059 # ---------------------------------------
1060 # Messages about about configure.ac.
1061 sub msg_ac ($$;%)
1062 {
1063 my ($channel, $msg, %opts) = @_;
1064 msg $channel, $configure_ac, $msg, %opts;
1065 }
1067 ################################################################
1069 # subst ($TEXT)
1070 # -------------
1071 # Return a configure-style substitution using the indicated text.
1072 # We do this to avoid having the substitutions directly in automake.in;
1073 # when we do that they are sometimes removed and this causes confusion
1074 # and bugs.
1075 sub subst ($)
1076 {
1077 my ($text) = @_;
1078 return '@' . $text . '@';
1079 }
1081 ################################################################
1084 # $BACKPATH
1085 # &backname ($RELDIR)
1086 # --------------------
1087 # If I "cd $RELDIR", then to come back, I should "cd $BACKPATH".
1088 # For instance 'src/foo' => '../..'.
1089 # Works with non strictly increasing paths, i.e., 'src/../lib' => '..'.
1090 sub backname ($)
1091 {
1092 my ($file) = @_;
1093 my @res;
1094 foreach (split (/\//, $file))
1095 {
1096 next if $_ eq '.' || $_ eq '';
1097 if ($_ eq '..')
1098 {
1099 pop @res
1100 or prog_error ("trying to reverse path '$file' pointing outside tree");
1101 }
1102 else
1103 {
1104 push (@res, '..');
1105 }
1106 }
1107 return join ('/', @res) || '.';
1108 }
1110 ################################################################
1112 # Silent rules handling functions.
1114 # verbose_var (NAME)
1115 # ------------------
1116 # The public variable stem used to implement silent rules.
1117 sub verbose_var ($)
1118 {
1119 my ($name) = @_;
1120 return 'AM_V_' . $name;
1121 }
1123 # verbose_private_var (NAME)
1124 # --------------------------
1125 # The naming policy for the private variables for silent rules.
1126 sub verbose_private_var ($)
1127 {
1128 my ($name) = @_;
1129 return 'am__v_' . $name;
1130 }
1132 # define_verbose_var (NAME, VAL-IF-SILENT, [VAL-IF-VERBOSE])
1133 # ----------------------------------------------------------
1134 # For silent rules, setup VAR and dispatcher, to expand to
1135 # VAL-IF-SILENT if silent, to VAL-IF-VERBOSE (defaulting to
1136 # empty) if not.
1137 sub define_verbose_var ($$;$)
1138 {
1139 my ($name, $silent_val, $verbose_val) = @_;
1140 $verbose_val = '' unless defined $verbose_val;
1141 my $var = verbose_var ($name);
1142 my $pvar = verbose_private_var ($name);
1143 my $silent_var = $pvar . '_0';
1144 my $verbose_var = $pvar . '_1';
1145 # For typical 'make's, 'configure' replaces AM_V (inside @@) with $(V)
1146 # and AM_DEFAULT_V (inside @@) with $(AM_DEFAULT_VERBOSITY).
1147 # For strict POSIX 2008 'make's, it replaces them with 0 or 1 instead.
1148 # See AM_SILENT_RULES in m4/silent.m4.
1149 define_variable ($var, '$(' . $pvar . '_@'.'AM_V'.'@)', INTERNAL);
1150 define_variable ($pvar . '_', '$(' . $pvar . '_@'.'AM_DEFAULT_V'.'@)',
1151 INTERNAL);
1152 Automake::Variable::define ($silent_var, VAR_AUTOMAKE, '', TRUE,
1153 $silent_val, '', INTERNAL, VAR_ASIS)
1154 if (! vardef ($silent_var, TRUE));
1155 Automake::Variable::define ($verbose_var, VAR_AUTOMAKE, '', TRUE,
1156 $verbose_val, '', INTERNAL, VAR_ASIS)
1157 if (! vardef ($verbose_var, TRUE));
1158 }
1160 # Above should not be needed in the general automake code.
1162 # verbose_flag (NAME)
1163 # -------------------
1164 # Contents of %VERBOSE%: variable to expand before rule command.
1165 sub verbose_flag ($)
1166 {
1167 my ($name) = @_;
1168 return '$(' . verbose_var ($name) . ')';
1169 }
1171 sub verbose_nodep_flag ($)
1172 {
1173 my ($name) = @_;
1174 return '$(' . verbose_var ($name) . subst ('am__nodep') . ')';
1175 }
1177 # silent_flag
1178 # -----------
1179 # Contents of %SILENT%: variable to expand to '@' when silent.
1180 sub silent_flag ()
1181 {
1182 return verbose_flag ('at');
1183 }
1185 # define_verbose_tagvar (NAME)
1186 # ----------------------------
1187 # Engage the needed silent rules machinery for tag NAME.
1188 sub define_verbose_tagvar ($)
1189 {
1190 my ($name) = @_;
1191 define_verbose_var ($name, '@echo " '. $name . ' ' x (8 - length ($name)) . '" $@;');
1192 }
1194 # define_verbose_texinfo
1195 # ----------------------
1196 # Engage the needed silent rules machinery for assorted texinfo commands.
1197 sub define_verbose_texinfo ()
1198 {
1199 my @tagvars = ('DVIPS', 'MAKEINFO', 'INFOHTML', 'TEXI2DVI', 'TEXI2PDF');
1200 foreach my $tag (@tagvars)
1201 {
1202 define_verbose_tagvar($tag);
1203 }
1204 define_verbose_var('texinfo', '-q');
1205 define_verbose_var('texidevnull', '> /dev/null');
1206 }
1208 # define_verbose_libtool
1209 # ----------------------
1210 # Engage the needed silent rules machinery for 'libtool --silent'.
1211 sub define_verbose_libtool ()
1212 {
1213 define_verbose_var ('lt', '--silent');
1214 return verbose_flag ('lt');
1215 }
1217 sub handle_silent ()
1218 {
1219 # Define "$(AM_V_P)", expanding to a shell conditional that can be
1220 # used in make recipes to determine whether we are being run in
1221 # silent mode or not. The choice of the name derives from the LISP
1222 # convention of appending the letter 'P' to denote a predicate (see
1223 # also "the '-P' convention" in the Jargon File); we do so for lack
1224 # of a better convention.
1225 define_verbose_var ('P', 'false', ':');
1226 # *Always* provide the user with '$(AM_V_GEN)', unconditionally.
1227 define_verbose_tagvar ('GEN');
1228 define_verbose_var ('at', '@');
1229 }
1232 ################################################################
1235 # Handle AUTOMAKE_OPTIONS variable. Return 1 on error, 0 otherwise.
1236 sub handle_options
1237 {
1238 my $var = var ('AUTOMAKE_OPTIONS');
1239 if ($var)
1240 {
1241 if ($var->has_conditional_contents)
1242 {
1243 msg_var ('unsupported', $var,
1244 "'AUTOMAKE_OPTIONS' cannot have conditional contents");
1245 }
1246 my @options = map { { option => $_->[1], where => $_->[0] } }
1247 $var->value_as_list_recursive (cond_filter => TRUE,
1248 location => 1);
1249 return 1 if process_option_list (@options);
1250 }
1252 if ($strictness == GNITS)
1253 {
1254 set_option ('readme-alpha', INTERNAL);
1255 set_option ('std-options', INTERNAL);
1256 set_option ('check-news', INTERNAL);
1257 }
1259 return 0;
1260 }
1262 # shadow_unconditionally ($varname, $where)
1263 # -----------------------------------------
1264 # Return a $(variable) that contains all possible values
1265 # $varname can take.
1266 # If the VAR wasn't defined conditionally, return $(VAR).
1267 # Otherwise we create an am__VAR_DIST variable which contains
1268 # all possible values, and return $(am__VAR_DIST).
1269 sub shadow_unconditionally ($$)
1270 {
1271 my ($varname, $where) = @_;
1272 my $var = var $varname;
1273 if ($var->has_conditional_contents)
1274 {
1275 $varname = "am__${varname}_DIST";
1276 my @files = uniq ($var->value_as_list_recursive);
1277 define_pretty_variable ($varname, TRUE, $where, @files);
1278 }
1279 return "\$($varname)"
1280 }
1282 # check_user_variables (@LIST)
1283 # ----------------------------
1284 # Make sure each variable VAR in @LIST does not exist, suggest using AM_VAR
1285 # otherwise.
1286 sub check_user_variables (@)
1287 {
1288 my @dont_override = @_;
1289 foreach my $flag (@dont_override)
1290 {
1291 my $var = var $flag;
1292 if ($var)
1293 {
1294 for my $cond ($var->conditions->conds)
1295 {
1296 if ($var->rdef ($cond)->owner == VAR_MAKEFILE)
1297 {
1298 msg_cond_var ('gnu', $cond, $flag,
1299 "'$flag' is a user variable, "
1300 . "you should not override it;\n"
1301 . "use 'AM_$flag' instead");
1302 }
1303 }
1304 }
1305 }
1306 }
1308 # Call finish function for each language that was used.
1309 sub handle_languages
1310 {
1311 if (! option 'no-dependencies')
1312 {
1313 # Include auto-dep code. Don't include it if DEP_FILES would
1314 # be empty.
1315 if (keys %extension_seen && keys %dep_files)
1316 {
1317 # Set location of depcomp.
1318 &define_variable ('depcomp',
1319 "\$(SHELL) $am_config_aux_dir/depcomp",
1320 INTERNAL);
1321 &define_variable ('am__depfiles_maybe', 'depfiles', INTERNAL);
1323 require_conf_file ("$am_file.am", FOREIGN, 'depcomp');
1325 my @deplist = sort keys %dep_files;
1326 # Generate each 'include' individually. Irix 6 make will
1327 # not properly include several files resulting from a
1328 # variable expansion; generating many separate includes
1329 # seems safest.
1330 $output_rules .= "\n";
1331 foreach my $iter (@deplist)
1332 {
1333 $output_rules .= (subst ('AMDEP_TRUE')
1334 . subst ('am__include')
1335 . ' '
1336 . subst ('am__quote')
1337 . $iter
1338 . subst ('am__quote')
1339 . "\n");
1340 }
1342 # Compute the set of directories to remove in distclean-depend.
1343 my @depdirs = uniq (map { dirname ($_) } @deplist);
1344 $output_rules .= &file_contents ('depend',
1345 new Automake::Location,
1346 DEPDIRS => "@depdirs");
1347 }
1348 }
1349 else
1350 {
1351 &define_variable ('depcomp', '', INTERNAL);
1352 &define_variable ('am__depfiles_maybe', '', INTERNAL);
1353 }
1355 my %done;
1357 # Is the C linker needed?
1358 my $needs_c = 0;
1359 foreach my $ext (sort keys %extension_seen)
1360 {
1361 next unless $extension_map{$ext};
1363 my $lang = $languages{$extension_map{$ext}};
1365 my $rule_file = $lang->rule_file || 'depend2';
1367 # Get information on $LANG.
1368 my $pfx = $lang->autodep;
1369 my $fpfx = ($pfx eq '') ? 'CC' : $pfx;
1371 my ($AMDEP, $FASTDEP) =
1372 (option 'no-dependencies' || $lang->autodep eq 'no')
1373 ? ('FALSE', 'FALSE') : ('AMDEP', "am__fastdep$fpfx");
1375 my $verbose = verbose_flag ($lang->ccer || 'GEN');
1376 my $verbose_nodep = ($AMDEP eq 'FALSE')
1377 ? $verbose : verbose_nodep_flag ($lang->ccer || 'GEN');
1378 my $silent = silent_flag ();
1380 my %transform = ('EXT' => $ext,
1381 'PFX' => $pfx,
1382 'FPFX' => $fpfx,
1383 'AMDEP' => $AMDEP,
1384 'FASTDEP' => $FASTDEP,
1385 '-c' => $lang->compile_flag || '',
1386 # These are not used, but they need to be defined
1387 # so &transform do not complain.
1388 SUBDIROBJ => 0,
1389 'DERIVED-EXT' => 'BUG',
1390 DIST_SOURCE => 1,
1391 VERBOSE => $verbose,
1392 'VERBOSE-NODEP' => $verbose_nodep,
1393 SILENT => $silent,
1394 );
1396 # Generate the appropriate rules for this extension.
1397 if (((! option 'no-dependencies') && $lang->autodep ne 'no')
1398 || defined $lang->compile)
1399 {
1400 # Some C compilers don't support -c -o. Use it only if really
1401 # needed.
1402 my $output_flag = $lang->output_flag || '';
1403 $output_flag = '-o'
1404 if (! $output_flag
1405 && $lang->name eq 'c'
1406 && option 'subdir-objects');
1408 # Compute a possible derived extension.
1409 # This is not used by depend2.am.
1410 my $der_ext = (&{$lang->output_extensions} ($ext))[0];
1412 # When we output an inference rule like '.c.o:' we
1413 # have two cases to consider: either subdir-objects
1414 # is used, or it is not.
1415 #
1416 # In the latter case the rule is used to build objects
1417 # in the current directory, and dependencies always
1418 # go into './$(DEPDIR)/'. We can hard-code this value.
1419 #
1420 # In the former case the rule can be used to build
1421 # objects in sub-directories too. Dependencies should
1422 # go into the appropriate sub-directories, e.g.,
1423 # 'sub/$(DEPDIR)/'. The value of this directory
1424 # needs to be computed on-the-fly.
1425 #
1426 # DEPBASE holds the name of this directory, plus the
1427 # basename part of the object file (extensions Po, TPo,
1428 # Plo, TPlo will be added later as appropriate). It is
1429 # either hardcoded, or a shell variable ('$depbase') that
1430 # will be computed by the rule.
1431 my $depbase =
1432 option ('subdir-objects') ? '$$depbase' : '$(DEPDIR)/$*';
1433 $output_rules .=
1434 file_contents ($rule_file,
1435 new Automake::Location,
1436 %transform,
1437 GENERIC => 1,
1439 'DERIVED-EXT' => $der_ext,
1441 DEPBASE => $depbase,
1442 BASE => '$*',
1443 SOURCE => '$<',
1444 SOURCEFLAG => $sourceflags{$ext} || '',
1445 OBJ => '$@',
1446 OBJOBJ => '$@',
1447 LTOBJ => '$@',
1449 COMPILE => '$(' . $lang->compiler . ')',
1450 LTCOMPILE => '$(LT' . $lang->compiler . ')',
1451 -o => $output_flag,
1452 SUBDIROBJ => !! option 'subdir-objects');
1453 }
1455 # Now include code for each specially handled object with this
1456 # language.
1457 my %seen_files = ();
1458 foreach my $file (@{$lang_specific_files{$lang->name}})
1459 {
1460 my ($derived, $source, $obj, $myext, $srcext, %file_transform) = @$file;
1462 # We might see a given object twice, for instance if it is
1463 # used under different conditions.
1464 next if defined $seen_files{$obj};
1465 $seen_files{$obj} = 1;
1467 prog_error ("found " . $lang->name .
1468 " in handle_languages, but compiler not defined")
1469 unless defined $lang->compile;
1471 my $obj_compile = $lang->compile;
1473 # Rewrite each occurrence of 'AM_$flag' in the compile
1474 # rule into '${derived}_$flag' if it exists.
1475 for my $flag (@{$lang->flags})
1476 {
1477 my $val = "${derived}_$flag";
1478 $obj_compile =~ s/\(AM_$flag\)/\($val\)/
1479 if set_seen ($val);
1480 }
1482 my $libtool_tag = '';
1483 if ($lang->libtool_tag && exists $libtool_tags{$lang->libtool_tag})
1484 {
1485 $libtool_tag = '--tag=' . $lang->libtool_tag . ' '
1486 }
1488 my $ptltflags = "${derived}_LIBTOOLFLAGS";
1489 $ptltflags = 'AM_LIBTOOLFLAGS' unless set_seen $ptltflags;
1491 my $ltverbose = define_verbose_libtool ();
1492 my $obj_ltcompile =
1493 "\$(LIBTOOL) $ltverbose $libtool_tag\$($ptltflags) \$(LIBTOOLFLAGS) "
1494 . "--mode=compile $obj_compile";
1496 # We _need_ '-o' for per object rules.
1497 my $output_flag = $lang->output_flag || '-o';
1499 my $depbase = dirname ($obj);
1500 $depbase = ''
1501 if $depbase eq '.';
1502 $depbase .= '/'
1503 unless $depbase eq '';
1504 $depbase .= '$(DEPDIR)/' . basename ($obj);
1506 $output_rules .=
1507 file_contents ($rule_file,
1508 new Automake::Location,
1509 %transform,
1510 GENERIC => 0,
1512 DEPBASE => $depbase,
1513 BASE => $obj,
1514 SOURCE => $source,
1515 SOURCEFLAG => $sourceflags{$srcext} || '',
1516 # Use $myext and not '.o' here, in case
1517 # we are actually building a new source
1518 # file -- e.g. via yacc.
1519 OBJ => "$obj$myext",
1520 OBJOBJ => "$obj.obj",
1521 LTOBJ => "$obj.lo",
1523 VERBOSE => $verbose,
1524 'VERBOSE-NODEP' => $verbose_nodep,
1525 SILENT => $silent,
1526 COMPILE => $obj_compile,
1527 LTCOMPILE => $obj_ltcompile,
1528 -o => $output_flag,
1529 %file_transform);
1530 }
1532 # The rest of the loop is done once per language.
1533 next if defined $done{$lang};
1534 $done{$lang} = 1;
1536 # Load the language dependent Makefile chunks.
1537 my %lang = map { uc ($_) => 0 } keys %languages;
1538 $lang{uc ($lang->name)} = 1;
1539 $output_rules .= file_contents ('lang-compile',
1540 new Automake::Location,
1541 %transform, %lang);
1543 # If the source to a program consists entirely of code from a
1544 # 'pure' language, for instance C++ or Fortran 77, then we
1545 # don't need the C compiler code. However if we run into
1546 # something unusual then we do generate the C code. There are
1547 # probably corner cases here that do not work properly.
1548 # People linking Java code to Fortran code deserve pain.
1549 $needs_c ||= ! $lang->pure;
1551 define_compiler_variable ($lang)
1552 if ($lang->compile);
1554 define_linker_variable ($lang)
1555 if ($lang->link);
1557 require_variables ("$am_file.am", $lang->Name . " source seen",
1558 TRUE, @{$lang->config_vars});
1560 # Call the finisher.
1561 $lang->finish;
1563 # Flags listed in '->flags' are user variables (per GNU Standards),
1564 # they should not be overridden in the Makefile...
1565 my @dont_override = @{$lang->flags};
1566 # ... and so is LDFLAGS.
1567 push @dont_override, 'LDFLAGS' if $lang->link;
1569 check_user_variables @dont_override;
1570 }
1572 # If the project is entirely C++ or entirely Fortran 77 (i.e., 1
1573 # suffix rule was learned), don't bother with the C stuff. But if
1574 # anything else creeps in, then use it.
1575 $needs_c = 1
1576 if $need_link || suffix_rules_count > 1;
1578 if ($needs_c)
1579 {
1580 &define_compiler_variable ($languages{'c'})
1581 unless defined $done{$languages{'c'}};
1582 define_linker_variable ($languages{'c'});
1583 }
1584 }
1587 # append_exeext { PREDICATE } $MACRO
1588 # ----------------------------------
1589 # Append $(EXEEXT) to each filename in $F appearing in the Makefile
1590 # variable $MACRO if &PREDICATE($F) is true. @substitutions@ are
1591 # ignored.
1592 #
1593 # This is typically used on all filenames of *_PROGRAMS, and filenames
1594 # of TESTS that are programs.
1595 sub append_exeext (&$)
1596 {
1597 my ($pred, $macro) = @_;
1599 transform_variable_recursively
1600 ($macro, $macro, 'am__EXEEXT', 0, INTERNAL,
1601 sub {
1602 my ($subvar, $val, $cond, $full_cond) = @_;
1603 # Append $(EXEEXT) unless the user did it already, or it's a
1604 # @substitution@.
1605 $val .= '$(EXEEXT)'
1606 if $val !~ /(?:\$\(EXEEXT\)$|^[@]\w+[@]$)/ && &$pred ($val);
1607 return $val;
1608 });
1609 }
1612 # Check to make sure a source defined in LIBOBJS is not explicitly
1613 # mentioned. This is a separate function (as opposed to being inlined
1614 # in handle_source_transform) because it isn't always appropriate to
1615 # do this check.
1616 sub check_libobjs_sources
1617 {
1618 my ($one_file, $unxformed) = @_;
1620 foreach my $prefix ('', 'EXTRA_', 'dist_', 'nodist_',
1621 'dist_EXTRA_', 'nodist_EXTRA_')
1622 {
1623 my @files;
1624 my $varname = $prefix . $one_file . '_SOURCES';
1625 my $var = var ($varname);
1626 if ($var)
1627 {
1628 @files = $var->value_as_list_recursive;
1629 }
1630 elsif ($prefix eq '')
1631 {
1632 @files = ($unxformed . '.c');
1633 }
1634 else
1635 {
1636 next;
1637 }
1639 foreach my $file (@files)
1640 {
1641 err_var ($prefix . $one_file . '_SOURCES',
1642 "automatically discovered file '$file' should not" .
1643 " be explicitly mentioned")
1644 if defined $libsources{$file};
1645 }
1646 }
1647 }
1650 # @OBJECTS
1651 # handle_single_transform ($VAR, $TOPPARENT, $DERIVED, $OBJ, $FILE, %TRANSFORM)
1652 # -----------------------------------------------------------------------------
1653 # Does much of the actual work for handle_source_transform.
1654 # Arguments are:
1655 # $VAR is the name of the variable that the source filenames come from
1656 # $TOPPARENT is the name of the _SOURCES variable which is being processed
1657 # $DERIVED is the name of resulting executable or library
1658 # $OBJ is the object extension (e.g., '.lo')
1659 # $FILE the source file to transform
1660 # %TRANSFORM contains extras arguments to pass to file_contents
1661 # when producing explicit rules
1662 # Result is a list of the names of objects
1663 # %linkers_used will be updated with any linkers needed
1664 sub handle_single_transform ($$$$$%)
1665 {
1666 my ($var, $topparent, $derived, $obj, $_file, %transform) = @_;
1667 my @files = ($_file);
1668 my @result = ();
1670 # Turn sources into objects. We use a while loop like this
1671 # because we might add to @files in the loop.
1672 while (scalar @files > 0)
1673 {
1674 $_ = shift @files;
1676 # Configure substitutions in _SOURCES variables are errors.
1677 if (/^\@.*\@$/)
1678 {
1679 my $parent_msg = '';
1680 $parent_msg = "\nand is referred to from '$topparent'"
1681 if $topparent ne $var->name;
1682 err_var ($var,
1683 "'" . $var->name . "' includes configure substitution '$_'"
1684 . $parent_msg . ";\nconfigure " .
1685 "substitutions are not allowed in _SOURCES variables");
1686 next;
1687 }
1689 # If the source file is in a subdirectory then the '.o' is put
1690 # into the current directory, unless the subdir-objects option
1691 # is in effect.
1693 # Split file name into base and extension.
1694 next if ! /^(?:(.*)\/)?([^\/]*)($KNOWN_EXTENSIONS_PATTERN)$/;
1695 my $full = $_;
1696 my $directory = $1 || '';
1697 my $base = $2;
1698 my $extension = $3;
1700 # We must generate a rule for the object if it requires its own flags.
1701 my $renamed = 0;
1702 my ($linker, $object);
1704 # This records whether we've seen a derived source file (e.g.
1705 # yacc output).
1706 my $derived_source = 0;
1708 # This holds the 'aggregate context' of the file we are
1709 # currently examining. If the file is compiled with
1710 # per-object flags, then it will be the name of the object.
1711 # Otherwise it will be 'AM'. This is used by the target hook
1712 # language function.
1713 my $aggregate = 'AM';
1715 $extension = &derive_suffix ($extension, $obj);
1716 my $lang;
1717 if ($extension_map{$extension} &&
1718 ($lang = $languages{$extension_map{$extension}}))
1719 {
1720 # Found the language, so see what it says.
1721 &saw_extension ($extension);
1723 # Do we have per-executable flags for this executable?
1724 my $have_per_exec_flags = 0;
1725 my @peflags = @{$lang->flags};
1726 push @peflags, 'LIBTOOLFLAGS' if $obj eq '.lo';
1727 foreach my $flag (@peflags)
1728 {
1729 if (set_seen ("${derived}_$flag"))
1730 {
1731 $have_per_exec_flags = 1;
1732 last;
1733 }
1734 }
1736 # Note: computed subr call. The language rewrite function
1737 # should return one of the LANG_* constants. It could
1738 # also return a list whose first value is such a constant
1739 # and whose second value is a new source extension which
1740 # should be applied. This means this particular language
1741 # generates another source file which we must then process
1742 # further.
1743 my $subr = \&{'lang_' . $lang->name . '_rewrite'};
1744 defined &$subr or $subr = \&lang_sub_obj;
1745 my ($r, $source_extension)
1746 = &$subr ($directory, $base, $extension,
1747 $obj, $have_per_exec_flags, $var);
1748 # Skip this entry if we were asked not to process it.
1749 next if $r == LANG_IGNORE;
1751 # Now extract linker and other info.
1752 $linker = $lang->linker;
1754 my $this_obj_ext;
1755 if (defined $source_extension)
1756 {
1757 $this_obj_ext = $source_extension;
1758 $derived_source = 1;
1759 }
1760 else
1761 {
1762 $this_obj_ext = $obj;
1763 }
1764 $object = $base . $this_obj_ext;
1766 if ($have_per_exec_flags)
1767 {
1768 # We have a per-executable flag in effect for this
1769 # object. In this case we rewrite the object's
1770 # name to ensure it is unique.
1772 # We choose the name 'DERIVED_OBJECT' to ensure
1773 # (1) uniqueness, and (2) continuity between
1774 # invocations. However, this will result in a
1775 # name that is too long for losing systems, in
1776 # some situations. So we provide _SHORTNAME to
1777 # override.
1779 my $dname = $derived;
1780 my $var = var ($derived . '_SHORTNAME');
1781 if ($var)
1782 {
1783 # FIXME: should use the same Condition as
1784 # the _SOURCES variable. But this is really
1785 # silly overkill -- nobody should have
1786 # conditional shortnames.
1787 $dname = $var->variable_value;
1788 }
1789 $object = $dname . '-' . $object;
1791 prog_error ($lang->name . " flags defined without compiler")
1792 if ! defined $lang->compile;
1794 $renamed = 1;
1795 }
1797 # If rewrite said it was ok, put the object into a
1798 # subdir.
1799 if ($r == LANG_SUBDIR && $directory ne '')
1800 {
1801 $object = $directory . '/' . $object;
1802 }
1804 # If the object file has been renamed (because per-target
1805 # flags are used) we cannot compile the file with an
1806 # inference rule: we need an explicit rule.
1807 #
1808 # If the source is in a subdirectory and the object is in
1809 # the current directory, we also need an explicit rule.
1810 #
1811 # If both source and object files are in a subdirectory
1812 # (this happens when the subdir-objects option is used),
1813 # then the inference will work.
1814 #
1815 # The latter case deserves a historical note. When the
1816 # subdir-objects option was added on 1999-04-11 it was
1817 # thought that inferences rules would work for
1818 # subdirectory objects too. Later, on 1999-11-22,
1819 # automake was changed to output explicit rules even for
1820 # subdir-objects. Nobody remembers why, but this occurred
1821 # soon after the merge of the user-dep-gen-branch so it
1822 # might be related. In late 2003 people complained about
1823 # the size of the generated Makefile.ins (libgcj, with
1824 # 2200+ subdir objects was reported to have a 9MB
1825 # Makefile), so we now rely on inference rules again.
1826 # Maybe we'll run across the same issue as in the past,
1827 # but at least this time we can document it. However since
1828 # dependency tracking has evolved it is possible that
1829 # our old problem no longer exists.
1830 # Using inference rules for subdir-objects has been tested
1831 # with GNU make, Solaris make, Ultrix make, BSD make,
1832 # HP-UX make, and OSF1 make successfully.
1833 if ($renamed
1834 || ($directory ne '' && ! option 'subdir-objects')
1835 # We must also use specific rules for a nodist_ source
1836 # if its language requests it.
1837 || ($lang->nodist_specific && ! $transform{'DIST_SOURCE'}))
1838 {
1839 my $obj_sans_ext = substr ($object, 0,
1840 - length ($this_obj_ext));
1841 my $full_ansi;
1842 if ($directory ne '')
1843 {
1844 $full_ansi = $directory . '/' . $base . $extension;
1845 }
1846 else
1847 {
1848 $full_ansi = $base . $extension;
1849 }
1851 my @specifics = ($full_ansi, $obj_sans_ext,
1852 # Only use $this_obj_ext in the derived
1853 # source case because in the other case we
1854 # *don't* want $(OBJEXT) to appear here.
1855 ($derived_source ? $this_obj_ext : '.o'),
1856 $extension);
1858 # If we renamed the object then we want to use the
1859 # per-executable flag name. But if this is simply a
1860 # subdir build then we still want to use the AM_ flag
1861 # name.
1862 if ($renamed)
1863 {
1864 unshift @specifics, $derived;
1865 $aggregate = $derived;
1866 }
1867 else
1868 {
1869 unshift @specifics, 'AM';
1870 }
1872 # Each item on this list is a reference to a list consisting
1873 # of four values followed by additional transform flags for
1874 # file_contents. The four values are the derived flag prefix
1875 # (e.g. for 'foo_CFLAGS', it is 'foo'), the name of the
1876 # source file, the base name of the output file, and
1877 # the extension for the object file.
1878 push (@{$lang_specific_files{$lang->name}},
1879 [@specifics, %transform]);
1880 }
1881 }
1882 elsif ($extension eq $obj)
1883 {
1884 # This is probably the result of a direct suffix rule.
1885 # In this case we just accept the rewrite.
1886 $object = "$base$extension";
1887 $object = "$directory/$object" if $directory ne '';
1888 $linker = '';
1889 }
1890 else
1891 {
1892 # No error message here. Used to have one, but it was
1893 # very unpopular.
1894 # FIXME: we could potentially do more processing here,
1895 # perhaps treating the new extension as though it were a
1896 # new source extension (as above). This would require
1897 # more restructuring than is appropriate right now.
1898 next;
1899 }
1901 err_am "object '$object' created by '$full' and '$object_map{$object}'"
1902 if (defined $object_map{$object}
1903 && $object_map{$object} ne $full);
1905 my $comp_val = (($object =~ /\.lo$/)
1906 ? COMPILE_LIBTOOL : COMPILE_ORDINARY);
1907 (my $comp_obj = $object) =~ s/\.lo$/.\$(OBJEXT)/;
1908 if (defined $object_compilation_map{$comp_obj}
1909 && $object_compilation_map{$comp_obj} != 0
1910 # Only see the error once.
1911 && ($object_compilation_map{$comp_obj}
1912 != (COMPILE_LIBTOOL | COMPILE_ORDINARY))
1913 && $object_compilation_map{$comp_obj} != $comp_val)
1914 {
1915 err_am "object '$comp_obj' created both with libtool and without";
1916 }
1917 $object_compilation_map{$comp_obj} |= $comp_val;
1919 if (defined $lang)
1920 {
1921 # Let the language do some special magic if required.
1922 $lang->target_hook ($aggregate, $object, $full, %transform);
1923 }
1925 if ($derived_source)
1926 {
1927 prog_error ($lang->name . " has automatic dependency tracking")
1928 if $lang->autodep ne 'no';
1929 # Make sure this new source file is handled next. That will
1930 # make it appear to be at the right place in the list.
1931 unshift (@files, $object);
1932 # Distribute derived sources unless the source they are
1933 # derived from is not.
1934 &push_dist_common ($object)
1935 unless ($topparent =~ /^(?:nobase_)?nodist_/);
1936 next;
1937 }
1939 $linkers_used{$linker} = 1;
1941 push (@result, $object);
1943 if (! defined $object_map{$object})
1944 {
1945 my @dep_list = ();
1946 $object_map{$object} = $full;
1948 # If resulting object is in subdir, we need to make
1949 # sure the subdir exists at build time.
1950 if ($object =~ /\//)
1951 {
1952 # FIXME: check that $DIRECTORY is somewhere in the
1953 # project
1955 # For Java, the way we're handling it right now, a
1956 # '..' component doesn't make sense.
1957 if ($lang && $lang->name eq 'java' && $object =~ /(\/|^)\.\.\//)
1958 {
1959 err_am "'$full' should not contain a '..' component";
1960 }
1962 # Make sure *all* objects files in the subdirectory are
1963 # removed by "make mostlyclean". Not only this is more
1964 # efficient than listing the object files to be removed
1965 # individually (which would cause an 'rm' invocation for
1966 # each of them -- very inefficient, see bug#10697), it
1967 # would also leave stale object files in the subdirectory
1968 # whenever a source file there is removed or renamed.
1969 $compile_clean_files{"$directory/*.\$(OBJEXT)"} = MOSTLY_CLEAN;
1970 if ($object =~ /\.lo$/)
1971 {
1972 # If we have a libtool object, then we also must remove
1973 # any '.lo' objects in its same subdirectory.
1974 $compile_clean_files{"$directory/*.lo"} = MOSTLY_CLEAN;
1975 # Remember to cleanup .libs/ in this directory.
1976 $libtool_clean_directories{$directory} = 1;
1977 }
1979 push (@dep_list, require_build_directory ($directory));
1981 # If we're generating dependencies, we also want
1982 # to make sure that the appropriate subdir of the
1983 # .deps directory is created.
1984 push (@dep_list,
1985 require_build_directory ($directory . '/$(DEPDIR)'))
1986 unless option 'no-dependencies';
1987 }
1989 &pretty_print_rule ($object . ':', "\t", @dep_list)
1990 if scalar @dep_list > 0;
1991 }
1993 # Transform .o or $o file into .P file (for automatic
1994 # dependency code).
1995 # Properly flatten multiple adjacent slashes, as Solaris 10 make
1996 # might fail over them in an include statement.
1997 # Leading double slashes may be special, as per Posix, so deal
1998 # with them carefully.
1999 if ($lang && $lang->autodep ne 'no')
2000 {
2001 my $depfile = $object;
2002 $depfile =~ s/\.([^.]*)$/.P$1/;
2003 $depfile =~ s/\$\(OBJEXT\)$/o/;
2004 my $maybe_extra_leading_slash = '';
2005 $maybe_extra_leading_slash = '/' if $depfile =~ m,^//[^/],;
2006 $depfile =~ s,/+,/,g;
2007 my $basename = basename ($depfile);
2008 # This might make $dirname empty, but we account for that below.
2009 (my $dirname = dirname ($depfile)) =~ s/\/*$//;
2010 $dirname = $maybe_extra_leading_slash . $dirname;
2011 $dep_files{$dirname . '/$(DEPDIR)/' . $basename} = 1;
2012 }
2013 }
2015 return @result;
2016 }
2019 # $LINKER
2020 # define_objects_from_sources ($VAR, $OBJVAR, $NODEFINE, $ONE_FILE,
2021 # $OBJ, $PARENT, $TOPPARENT, $WHERE, %TRANSFORM)
2022 # ---------------------------------------------------------------------------
2023 # Define an _OBJECTS variable for a _SOURCES variable (or subvariable)
2024 #
2025 # Arguments are:
2026 # $VAR is the name of the _SOURCES variable
2027 # $OBJVAR is the name of the _OBJECTS variable if known (otherwise
2028 # it will be generated and returned).
2029 # $NODEFINE is a boolean: if true, $OBJVAR will not be defined (but
2030 # work done to determine the linker will be).
2031 # $ONE_FILE is the canonical (transformed) name of object to build
2032 # $OBJ is the object extension (i.e. either '.o' or '.lo').
2033 # $TOPPARENT is the _SOURCES variable being processed.
2034 # $WHERE context into which this definition is done
2035 # %TRANSFORM extra arguments to pass to file_contents when producing
2036 # rules
2037 #
2038 # Result is a pair ($LINKER, $OBJVAR):
2039 # $LINKER is a boolean, true if a linker is needed to deal with the objects
2040 sub define_objects_from_sources ($$$$$$$%)
2041 {
2042 my ($var, $objvar, $nodefine, $one_file,
2043 $obj, $topparent, $where, %transform) = @_;
2045 my $needlinker = "";
2047 transform_variable_recursively
2048 ($var, $objvar, 'am__objects', $nodefine, $where,
2049 # The transform code to run on each filename.
2050 sub {
2051 my ($subvar, $val, $cond, $full_cond) = @_;
2052 my @trans = handle_single_transform ($subvar, $topparent,
2053 $one_file, $obj, $val,
2054 %transform);
2055 $needlinker = "true" if @trans;
2056 return @trans;
2057 });
2059 return $needlinker;
2060 }
2063 # handle_source_transform ($CANON_TARGET, $TARGET, $OBJEXT, $WHERE, %TRANSFORM)
2064 # -----------------------------------------------------------------------------
2065 # Handle SOURCE->OBJECT transform for one program or library.
2066 # Arguments are:
2067 # canonical (transformed) name of target to build
2068 # actual target of object to build
2069 # object extension (i.e., either '.o' or '$o')
2070 # location of the source variable
2071 # extra arguments to pass to file_contents when producing rules
2072 # Return the name of the linker variable that must be used.
2073 # Empty return means just use 'LINK'.
2074 sub handle_source_transform ($$$$%)
2075 {
2076 # one_file is canonical name. unxformed is given name. obj is
2077 # object extension.
2078 my ($one_file, $unxformed, $obj, $where, %transform) = @_;
2080 my $linker = '';
2082 # No point in continuing if _OBJECTS is defined.
2083 return if reject_var ($one_file . '_OBJECTS',
2084 $one_file . '_OBJECTS should not be defined');
2086 my %used_pfx = ();
2087 my $needlinker;
2088 %linkers_used = ();
2089 foreach my $prefix ('', 'EXTRA_', 'dist_', 'nodist_',
2090 'dist_EXTRA_', 'nodist_EXTRA_')
2091 {
2092 my $varname = $prefix . $one_file . "_SOURCES";
2093 my $var = var $varname;
2094 next unless $var;
2096 # We are going to define _OBJECTS variables using the prefix.
2097 # Then we glom them all together. So we can't use the null
2098 # prefix here as we need it later.
2099 my $xpfx = ($prefix eq '') ? 'am_' : $prefix;
2101 # Keep track of which prefixes we saw.
2102 $used_pfx{$xpfx} = 1
2103 unless $prefix =~ /EXTRA_/;
2105 push @sources, "\$($varname)";
2106 push @dist_sources, shadow_unconditionally ($varname, $where)
2107 unless (option ('no-dist') || $prefix =~ /^nodist_/);
2109 $needlinker |=
2110 define_objects_from_sources ($varname,
2111 $xpfx . $one_file . '_OBJECTS',
2112 $prefix =~ /EXTRA_/,
2113 $one_file, $obj, $varname, $where,
2114 DIST_SOURCE => ($prefix !~ /^nodist_/),
2115 %transform);
2116 }
2117 if ($needlinker)
2118 {
2119 $linker ||= &resolve_linker (%linkers_used);
2120 }
2122 my @keys = sort keys %used_pfx;
2123 if (scalar @keys == 0)
2124 {
2125 # The default source for libfoo.la is libfoo.c, but for
2126 # backward compatibility we first look at libfoo_la.c,
2127 # if no default source suffix is given.
2128 my $old_default_source = "$one_file.c";
2129 my $ext_var = var ('AM_DEFAULT_SOURCE_EXT');
2130 my $default_source_ext = $ext_var ? variable_value ($ext_var) : '.c';
2131 msg_var ('unsupported', $ext_var, $ext_var->name . " can assume at most one value")
2132 if $default_source_ext =~ /[\t ]/;
2133 (my $default_source = $unxformed) =~ s,(\.[^./\\]*)?$,$default_source_ext,;
2134 # TODO: Remove this backward-compatibility hack in Automake 1.14.
2135 if ($old_default_source ne $default_source
2136 && !$ext_var
2137 && (rule $old_default_source
2138 || rule '$(srcdir)/' . $old_default_source
2139 || rule '${srcdir}/' . $old_default_source
2140 || -f $old_default_source))
2141 {
2142 my $loc = $where->clone;
2143 $loc->pop_context;
2144 msg ('obsolete', $loc,
2145 "the default source for '$unxformed' has been changed "
2146 . "to '$default_source'.\n(Using '$old_default_source' for "
2147 . "backward compatibility.)");
2148 $default_source = $old_default_source;
2149 }
2150 # If a rule exists to build this source with a $(srcdir)
2151 # prefix, use that prefix in our variables too. This is for
2152 # the sake of BSD Make.
2153 if (rule '$(srcdir)/' . $default_source
2154 || rule '${srcdir}/' . $default_source)
2155 {
2156 $default_source = '$(srcdir)/' . $default_source;
2157 }
2159 &define_variable ($one_file . "_SOURCES", $default_source, $where);
2160 push (@sources, $default_source);
2161 push (@dist_sources, $default_source);
2163 %linkers_used = ();
2164 my (@result) =
2165 handle_single_transform ($one_file . '_SOURCES',
2166 $one_file . '_SOURCES',
2167 $one_file, $obj,
2168 $default_source, %transform);
2169 $linker ||= &resolve_linker (%linkers_used);
2170 define_pretty_variable ($one_file . '_OBJECTS', TRUE, $where, @result);
2171 }
2172 else
2173 {
2174 @keys = map { '$(' . $_ . $one_file . '_OBJECTS)' } @keys;
2175 define_pretty_variable ($one_file . '_OBJECTS', TRUE, $where, @keys);
2176 }
2178 # If we want to use 'LINK' we must make sure it is defined.
2179 if ($linker eq '')
2180 {
2181 $need_link = 1;
2182 }
2184 return $linker;
2185 }
2188 # handle_lib_objects ($XNAME, $VAR)
2189 # ---------------------------------
2190 # Special-case ALLOCA and LIBOBJS substitutions in _LDADD or _LIBADD variables.
2191 # Also, generate _DEPENDENCIES variable if appropriate.
2192 # Arguments are:
2193 # transformed name of object being built, or empty string if no object
2194 # name of _LDADD/_LIBADD-type variable to examine
2195 # Returns 1 if LIBOBJS seen, 0 otherwise.
2196 sub handle_lib_objects
2197 {
2198 my ($xname, $varname) = @_;
2200 my $var = var ($varname);
2201 prog_error "'$varname' undefined"
2202 unless $var;
2203 prog_error "unexpected variable name '$varname'"
2204 unless $varname =~ /^(.*)(?:LIB|LD)ADD$/;
2205 my $prefix = $1 || 'AM_';
2207 my $seen_libobjs = 0;
2208 my $flagvar = 0;
2210 transform_variable_recursively
2211 ($varname, $xname . '_DEPENDENCIES', 'am__DEPENDENCIES',
2212 ! $xname, INTERNAL,
2213 # Transformation function, run on each filename.
2214 sub {
2215 my ($subvar, $val, $cond, $full_cond) = @_;
2217 if ($val =~ /^-/)
2218 {
2219 # Skip -lfoo and -Ldir silently; these are explicitly allowed.
2220 if ($val !~ /^-[lL]/ &&
2221 # Skip -dlopen and -dlpreopen; these are explicitly allowed
2222 # for Libtool libraries or programs. (Actually we are a bit
2223 # lax here since this code also applies to non-libtool
2224 # libraries or programs, for which -dlopen and -dlopreopen
2225 # are pure nonsense. Diagnosing this doesn't seem very
2226 # important: the developer will quickly get complaints from
2227 # the linker.)
2228 $val !~ /^-dl(?:pre)?open$/ &&
2229 # Only get this error once.
2230 ! $flagvar)
2231 {
2232 $flagvar = 1;
2233 # FIXME: should display a stack of nested variables
2234 # as context when $var != $subvar.
2235 err_var ($var, "linker flags such as '$val' belong in "
2236 . "'${prefix}LDFLAGS'");
2237 }
2238 return ();
2239 }
2240 elsif ($val !~ /^\@.*\@$/)
2241 {
2242 # Assume we have a file of some sort, and output it into the
2243 # dependency variable. Autoconf substitutions are not output;
2244 # rarely is a new dependency substituted into e.g. foo_LDADD
2245 # -- but bad things (e.g. -lX11) are routinely substituted.
2246 # Note that LIBOBJS and ALLOCA are exceptions to this rule,
2247 # and handled specially below.
2248 return $val;
2249 }
2250 elsif ($val =~ /^\@(LT)?LIBOBJS\@$/)
2251 {
2252 handle_LIBOBJS ($subvar, $cond, $1);
2253 $seen_libobjs = 1;
2254 return $val;
2255 }
2256 elsif ($val =~ /^\@(LT)?ALLOCA\@$/)
2257 {
2258 handle_ALLOCA ($subvar, $cond, $1);
2259 return $val;
2260 }
2261 else
2262 {
2263 return ();
2264 }
2265 });
2267 return $seen_libobjs;
2268 }
2270 # handle_LIBOBJS_or_ALLOCA ($VAR)
2271 # -------------------------------
2272 # Definitions common to LIBOBJS and ALLOCA.
2273 # VAR should be one of LIBOBJS, LTLIBOBJS, ALLOCA, or LTALLOCA.
2274 sub handle_LIBOBJS_or_ALLOCA ($)
2275 {
2276 my ($var) = @_;
2278 my $dir = '';
2280 # If LIBOBJS files must be built in another directory we have
2281 # to define LIBOBJDIR and ensure the files get cleaned.
2282 # Otherwise LIBOBJDIR can be left undefined, and the cleaning
2283 # is achieved by 'rm -f *.$(OBJEXT)' in compile.am.
2284 if ($config_libobj_dir
2285 && $relative_dir ne $config_libobj_dir)
2286 {
2287 if (option 'subdir-objects')
2288 {
2289 # In the top-level Makefile we do not use $(top_builddir), because
2290 # we are already there, and since the targets are built without
2291 # a $(top_builddir), it helps BSD Make to match them with
2292 # dependencies.
2293 $dir = "$config_libobj_dir/"
2294 if $config_libobj_dir ne '.';
2295 $dir = backname ($relative_dir) . "/$dir"
2296 if $relative_dir ne '.';
2297 define_variable ('LIBOBJDIR', "$dir", INTERNAL);
2298 $clean_files{"\$($var)"} = MOSTLY_CLEAN;
2299 # If LTLIBOBJS is used, we must also clear LIBOBJS (which might
2300 # be created by libtool as a side-effect of creating LTLIBOBJS).
2301 $clean_files{"\$($var)"} = MOSTLY_CLEAN if $var =~ s/^LT//;
2302 }
2303 else
2304 {
2305 error ("'\$($var)' cannot be used outside '$config_libobj_dir' if"
2306 . " 'subdir-objects' is not set");
2307 }
2308 }
2310 return $dir;
2311 }
2313 sub handle_LIBOBJS ($$$)
2314 {
2315 my ($var, $cond, $lt) = @_;
2316 my $myobjext = $lt ? 'lo' : 'o';
2317 $lt ||= '';
2319 $var->requires_variables ("\@${lt}LIBOBJS\@ used", $lt . 'LIBOBJS')
2320 if ! keys %libsources;
2322 my $dir = handle_LIBOBJS_or_ALLOCA "${lt}LIBOBJS";
2324 foreach my $iter (keys %libsources)
2325 {
2326 if ($iter =~ /\.[cly]$/)
2327 {
2328 &saw_extension ($&);
2329 &saw_extension ('.c');
2330 }
2332 if ($iter =~ /\.h$/)
2333 {
2334 require_libsource_with_macro ($cond, $var, FOREIGN, $iter);
2335 }
2336 elsif ($iter ne 'alloca.c')
2337 {
2338 my $rewrite = $iter;
2339 $rewrite =~ s/\.c$/.P$myobjext/;
2340 $dep_files{$dir . '$(DEPDIR)/' . $rewrite} = 1;
2341 $rewrite = "^" . quotemeta ($iter) . "\$";
2342 # Only require the file if it is not a built source.
2343 my $bs = var ('BUILT_SOURCES');
2344 if (! $bs || ! grep (/$rewrite/, $bs->value_as_list_recursive))
2345 {
2346 require_libsource_with_macro ($cond, $var, FOREIGN, $iter);
2347 }
2348 }
2349 }
2350 }
2352 sub handle_ALLOCA ($$$)
2353 {
2354 my ($var, $cond, $lt) = @_;
2355 my $myobjext = $lt ? 'lo' : 'o';
2356 $lt ||= '';
2357 my $dir = handle_LIBOBJS_or_ALLOCA "${lt}ALLOCA";
2359 $var->requires_variables ("\@${lt}ALLOCA\@ used", $lt . 'ALLOCA');
2360 $dep_files{$dir . '$(DEPDIR)/alloca.P' . $myobjext} = 1;
2361 require_libsource_with_macro ($cond, $var, FOREIGN, 'alloca.c');
2362 &saw_extension ('.c');
2363 }
2365 # Canonicalize the input parameter
2366 sub canonicalize
2367 {
2368 my ($string) = @_;
2369 $string =~ tr/A-Za-z0-9_\@/_/c;
2370 return $string;
2371 }
2373 # Canonicalize a name, and check to make sure the non-canonical name
2374 # is never used. Returns canonical name. Arguments are name and a
2375 # list of suffixes to check for.
2376 sub check_canonical_spelling
2377 {
2378 my ($name, @suffixes) = @_;
2380 my $xname = &canonicalize ($name);
2381 if ($xname ne $name)
2382 {
2383 foreach my $xt (@suffixes)
2384 {
2385 reject_var ("$name$xt", "use '$xname$xt', not '$name$xt'");
2386 }
2387 }
2389 return $xname;
2390 }
2393 # handle_compile ()
2394 # -----------------
2395 # Set up the compile suite.
2396 sub handle_compile ()
2397 {
2398 return if ! $must_handle_compiled_objects;
2400 # Boilerplate.
2401 my $default_includes = '';
2402 if (! option 'nostdinc')
2403 {
2404 my @incs = ('-I.', subst ('am__isrc'));
2406 my $var = var 'CONFIG_HEADER';
2407 if ($var)
2408 {
2409 foreach my $hdr (split (' ', $var->variable_value))
2410 {
2411 push @incs, '-I' . dirname ($hdr);
2412 }
2413 }
2414 # We want '-I. -I$(srcdir)', but the latter -I is redundant
2415 # and unaesthetic in non-VPATH builds. We use `-I.@am__isrc@`
2416 # instead. It will be replaced by '-I.' or '-I. -I$(srcdir)'.
2417 # Items in CONFIG_HEADER are never in $(srcdir) so it is safe
2418 # to just put @am__isrc@ right after '-I.', without a space.
2419 ($default_includes = ' ' . uniq (@incs)) =~ s/ @/@/;
2420 }
2422 my (@mostly_rms, @dist_rms);
2423 foreach my $item (sort keys %compile_clean_files)
2424 {
2425 if ($compile_clean_files{$item} == MOSTLY_CLEAN)
2426 {
2427 push (@mostly_rms, "\t-rm -f $item");
2428 }
2429 elsif ($compile_clean_files{$item} == DIST_CLEAN)
2430 {
2431 push (@dist_rms, "\t-rm -f $item");
2432 }
2433 else
2434 {
2435 prog_error 'invalid entry in %compile_clean_files';
2436 }
2437 }
2439 my ($coms, $vars, $rules) =
2440 &file_contents_internal (1, "$libdir/am/compile.am",
2441 new Automake::Location,
2442 ('DEFAULT_INCLUDES' => $default_includes,
2443 'MOSTLYRMS' => join ("\n", @mostly_rms),
2444 'DISTRMS' => join ("\n", @dist_rms)));
2445 $output_vars .= $vars;
2446 $output_rules .= "$coms$rules";
2447 }
2449 # handle_libtool ()
2450 # -----------------
2451 # Handle libtool rules.
2452 sub handle_libtool
2453 {
2454 return unless var ('LIBTOOL');
2456 # Libtool requires some files, but only at top level.
2457 # (Starting with Libtool 2.0 we do not have to bother. These
2458 # requirements are done with AC_REQUIRE_AUX_FILE.)
2459 require_conf_file_with_macro (TRUE, 'LIBTOOL', FOREIGN, @libtool_files)
2460 if $relative_dir eq '.' && ! $libtool_new_api;
2462 my @libtool_rms;
2463 foreach my $item (sort keys %libtool_clean_directories)
2464 {
2465 my $dir = ($item eq '.') ? '' : "$item/";
2466 # .libs is for Unix, _libs for DOS.
2467 push (@libtool_rms, "\t-rm -rf ${dir}.libs ${dir}_libs");
2468 }
2470 check_user_variables 'LIBTOOLFLAGS';
2472 # Output the libtool compilation rules.
2473 $output_rules .= &file_contents ('libtool',
2474 new Automake::Location,
2475 LTRMS => join ("\n", @libtool_rms));
2476 }
2478 # handle_programs ()
2479 # ------------------
2480 # Handle C programs.
2481 sub handle_programs
2482 {
2483 my @proglist = &am_install_var ('progs', 'PROGRAMS',
2484 'bin', 'sbin', 'libexec', 'pkglibexec',
2485 'noinst', 'check');
2486 return if ! @proglist;
2487 $must_handle_compiled_objects = 1;
2489 my $seen_global_libobjs =
2490 var ('LDADD') && &handle_lib_objects ('', 'LDADD');
2492 foreach my $pair (@proglist)
2493 {
2494 my ($where, $one_file) = @$pair;
2496 my $seen_libobjs = 0;
2497 my $obj = '.$(OBJEXT)';
2499 $known_programs{$one_file} = $where;
2501 # Canonicalize names and check for misspellings.
2502 my $xname = &check_canonical_spelling ($one_file, '_LDADD', '_LDFLAGS',
2503 '_SOURCES', '_OBJECTS',
2504 '_DEPENDENCIES');
2506 $where->push_context ("while processing program '$one_file'");
2507 $where->set (INTERNAL->get);
2509 my $linker = &handle_source_transform ($xname, $one_file, $obj, $where,
2510 NONLIBTOOL => 1, LIBTOOL => 0);
2512 if (var ($xname . "_LDADD"))
2513 {
2514 $seen_libobjs = &handle_lib_objects ($xname, $xname . '_LDADD');
2515 }
2516 else
2517 {
2518 # User didn't define prog_LDADD override. So do it.
2519 &define_variable ($xname . '_LDADD', '$(LDADD)', $where);
2521 # This does a bit too much work. But we need it to
2522 # generate _DEPENDENCIES when appropriate.
2523 if (var ('LDADD'))
2524 {
2525 $seen_libobjs = &handle_lib_objects ($xname, 'LDADD');
2526 }
2527 }
2529 reject_var ($xname . '_LIBADD',
2530 "use '${xname}_LDADD', not '${xname}_LIBADD'");
2532 set_seen ($xname . '_DEPENDENCIES');
2533 set_seen ('EXTRA_' . $xname . '_DEPENDENCIES');
2534 set_seen ($xname . '_LDFLAGS');
2536 # Determine program to use for link.
2537 my($xlink, $vlink) = &define_per_target_linker_variable ($linker, $xname);
2538 $vlink = verbose_flag ($vlink || 'GEN');
2540 # If the resulting program lies in a subdirectory,
2541 # ensure that the directory exists before we need it.
2542 my $dirstamp = require_build_directory_maybe ($one_file);
2544 $libtool_clean_directories{dirname ($one_file)} = 1;
2546 $output_rules .= &file_contents ('program',
2547 $where,
2548 PROGRAM => $one_file,
2549 XPROGRAM => $xname,
2550 XLINK => $xlink,
2551 VERBOSE => $vlink,
2552 DIRSTAMP => $dirstamp,
2553 EXEEXT => '$(EXEEXT)');
2555 if ($seen_libobjs || $seen_global_libobjs)
2556 {
2557 if (var ($xname . '_LDADD'))
2558 {
2559 &check_libobjs_sources ($xname, $xname . '_LDADD');
2560 }
2561 elsif (var ('LDADD'))
2562 {
2563 &check_libobjs_sources ($xname, 'LDADD');
2564 }
2565 }
2566 }
2567 }
2570 # handle_libraries ()
2571 # -------------------
2572 # Handle libraries.
2573 sub handle_libraries
2574 {
2575 my @liblist = &am_install_var ('libs', 'LIBRARIES',
2576 'lib', 'pkglib', 'noinst', 'check');
2577 return if ! @liblist;
2578 $must_handle_compiled_objects = 1;
2580 my @prefix = am_primary_prefixes ('LIBRARIES', 0, 'lib', 'pkglib',
2581 'noinst', 'check');
2583 if (@prefix)
2584 {
2585 my $var = rvar ($prefix[0] . '_LIBRARIES');
2586 $var->requires_variables ('library used', 'RANLIB');
2587 }
2589 &define_variable ('AR', 'ar', INTERNAL);
2590 &define_variable ('ARFLAGS', 'cru', INTERNAL);
2591 &define_verbose_tagvar ('AR');
2593 foreach my $pair (@liblist)
2594 {
2595 my ($where, $onelib) = @$pair;
2597 my $seen_libobjs = 0;
2598 # Check that the library fits the standard naming convention.
2599 my $bn = basename ($onelib);
2600 if ($bn !~ /^lib.*\.a$/)
2601 {
2602 $bn =~ s/^(?:lib)?(.*?)(?:\.[^.]*)?$/lib$1.a/;
2603 my $suggestion = dirname ($onelib) . "/$bn";
2604 $suggestion =~ s|^\./||g;
2605 msg ('error-gnu/warn', $where,
2606 "'$onelib' is not a standard library name\n"
2607 . "did you mean '$suggestion'?")
2608 }
2610 ($known_libraries{$onelib} = $bn) =~ s/\.a$//;
2612 $where->push_context ("while processing library '$onelib'");
2613 $where->set (INTERNAL->get);
2615 my $obj = '.$(OBJEXT)';
2617 # Canonicalize names and check for misspellings.
2618 my $xlib = &check_canonical_spelling ($onelib, '_LIBADD', '_SOURCES',
2619 '_OBJECTS', '_DEPENDENCIES',
2620 '_AR');
2622 if (! var ($xlib . '_AR'))
2623 {
2624 &define_variable ($xlib . '_AR', '$(AR) $(ARFLAGS)', $where);
2625 }
2627 # Generate support for conditional object inclusion in
2628 # libraries.
2629 if (var ($xlib . '_LIBADD'))
2630 {
2631 if (&handle_lib_objects ($xlib, $xlib . '_LIBADD'))
2632 {
2633 $seen_libobjs = 1;
2634 }
2635 }
2636 else
2637 {
2638 &define_variable ($xlib . "_LIBADD", '', $where);
2639 }
2641 reject_var ($xlib . '_LDADD',
2642 "use '${xlib}_LIBADD', not '${xlib}_LDADD'");
2644 # Make sure we at look at this.
2645 set_seen ($xlib . '_DEPENDENCIES');
2646 set_seen ('EXTRA_' . $xlib . '_DEPENDENCIES');
2648 &handle_source_transform ($xlib, $onelib, $obj, $where,
2649 NONLIBTOOL => 1, LIBTOOL => 0);
2651 # If the resulting library lies in a subdirectory,
2652 # make sure this directory will exist.
2653 my $dirstamp = require_build_directory_maybe ($onelib);
2654 my $verbose = verbose_flag ('AR');
2655 my $silent = silent_flag ();
2657 $output_rules .= &file_contents ('library',
2658 $where,
2659 VERBOSE => $verbose,
2660 SILENT => $silent,
2661 LIBRARY => $onelib,
2662 XLIBRARY => $xlib,
2663 DIRSTAMP => $dirstamp);
2665 if ($seen_libobjs)
2666 {
2667 if (var ($xlib . '_LIBADD'))
2668 {
2669 &check_libobjs_sources ($xlib, $xlib . '_LIBADD');
2670 }
2671 }
2673 if (! $seen_ar)
2674 {
2675 msg ('extra-portability', $where,
2676 "'$onelib': linking libraries using a non-POSIX\n"
2677 . "archiver requires 'AM_PROG_AR' in '$configure_ac'")
2678 }
2679 }
2680 }
2683 # handle_ltlibraries ()
2684 # ---------------------
2685 # Handle shared libraries.
2686 sub handle_ltlibraries
2687 {
2688 my @liblist = &am_install_var ('ltlib', 'LTLIBRARIES',
2689 'noinst', 'lib', 'pkglib', 'check');
2690 return if ! @liblist;
2691 $must_handle_compiled_objects = 1;
2693 my @prefix = am_primary_prefixes ('LTLIBRARIES', 0, 'lib', 'pkglib',
2694 'noinst', 'check');
2696 if (@prefix)
2697 {
2698 my $var = rvar ($prefix[0] . '_LTLIBRARIES');
2699 $var->requires_variables ('Libtool library used', 'LIBTOOL');
2700 }
2702 my %instdirs = ();
2703 my %instsubdirs = ();
2704 my %instconds = ();
2705 my %liblocations = (); # Location (in Makefile.am) of each library.
2707 foreach my $key (@prefix)
2708 {
2709 # Get the installation directory of each library.
2710 my $dir = $key;
2711 my $strip_subdir = 1;
2712 if ($dir =~ /^nobase_/)
2713 {
2714 $dir =~ s/^nobase_//;
2715 $strip_subdir = 0;
2716 }
2717 my $var = rvar ($key . '_LTLIBRARIES');
2719 # We reject libraries which are installed in several places
2720 # in the same condition, because we can only specify one
2721 # '-rpath' option.
2722 $var->traverse_recursively
2723 (sub
2724 {
2725 my ($var, $val, $cond, $full_cond) = @_;
2726 my $hcond = $full_cond->human;
2727 my $where = $var->rdef ($cond)->location;
2728 my $ldir = '';
2729 $ldir = '/' . dirname ($val)
2730 if (!$strip_subdir);
2731 # A library cannot be installed in different directories
2732 # in overlapping conditions.
2733 if (exists $instconds{$val})
2734 {
2735 my ($msg, $acond) =
2736 $instconds{$val}->ambiguous_p ($val, $full_cond);
2738 if ($msg)
2739 {
2740 error ($where, $msg, partial => 1);
2741 my $dirtxt = "installed " . ($strip_subdir ? "in" : "below") . " '$dir'";
2742 $dirtxt = "built for '$dir'"
2743 if $dir eq 'EXTRA' || $dir eq 'noinst' || $dir eq 'check';
2744 my $dircond =
2745 $full_cond->true ? "" : " in condition $hcond";
2747 error ($where, "'$val' should be $dirtxt$dircond ...",
2748 partial => 1);
2750 my $hacond = $acond->human;
2751 my $adir = $instdirs{$val}{$acond};
2752 my $adirtxt = "installed in '$adir'";
2753 $adirtxt = "built for '$adir'"
2754 if ($adir eq 'EXTRA' || $adir eq 'noinst'
2755 || $adir eq 'check');
2756 my $adircond = $acond->true ? "" : " in condition $hacond";
2758 my $onlyone = ($dir ne $adir) ?
2759 ("\nLibtool libraries can be built for only one "
2760 . "destination") : "";
2762 error ($liblocations{$val}{$acond},
2763 "... and should also be $adirtxt$adircond.$onlyone");
2764 return;
2765 }
2766 }
2767 else
2768 {
2769 $instconds{$val} = new Automake::DisjConditions;
2770 }
2771 $instdirs{$val}{$full_cond} = $dir;
2772 $instsubdirs{$val}{$full_cond} = $ldir;
2773 $liblocations{$val}{$full_cond} = $where;
2774 $instconds{$val} = $instconds{$val}->merge ($full_cond);
2775 },
2776 sub
2777 {
2778 return ();
2779 },
2780 skip_ac_subst => 1);
2781 }
2783 foreach my $pair (@liblist)
2784 {
2785 my ($where, $onelib) = @$pair;
2787 my $seen_libobjs = 0;
2788 my $obj = '.lo';
2790 # Canonicalize names and check for misspellings.
2791 my $xlib = &check_canonical_spelling ($onelib, '_LIBADD', '_LDFLAGS',
2792 '_SOURCES', '_OBJECTS',
2793 '_DEPENDENCIES');
2795 # Check that the library fits the standard naming convention.
2796 my $libname_rx = '^lib.*\.la';
2797 my $ldvar = var ("${xlib}_LDFLAGS") || var ('AM_LDFLAGS');
2798 my $ldvar2 = var ('LDFLAGS');
2799 if (($ldvar && grep (/-module/, $ldvar->value_as_list_recursive))
2800 || ($ldvar2 && grep (/-module/, $ldvar2->value_as_list_recursive)))
2801 {
2802 # Relax name checking for libtool modules.
2803 $libname_rx = '\.la';
2804 }
2806 my $bn = basename ($onelib);
2807 if ($bn !~ /$libname_rx$/)
2808 {
2809 my $type = 'library';
2810 if ($libname_rx eq '\.la')
2811 {
2812 $bn =~ s/^(lib|)(.*?)(?:\.[^.]*)?$/$1$2.la/;
2813 $type = 'module';
2814 }
2815 else
2816 {
2817 $bn =~ s/^(?:lib)?(.*?)(?:\.[^.]*)?$/lib$1.la/;
2818 }
2819 my $suggestion = dirname ($onelib) . "/$bn";
2820 $suggestion =~ s|^\./||g;
2821 msg ('error-gnu/warn', $where,
2822 "'$onelib' is not a standard libtool $type name\n"
2823 . "did you mean '$suggestion'?")
2824 }
2826 ($known_libraries{$onelib} = $bn) =~ s/\.la$//;
2828 $where->push_context ("while processing Libtool library '$onelib'");
2829 $where->set (INTERNAL->get);
2831 # Make sure we look at these.
2832 set_seen ($xlib . '_LDFLAGS');
2833 set_seen ($xlib . '_DEPENDENCIES');
2834 set_seen ('EXTRA_' . $xlib . '_DEPENDENCIES');
2836 # Generate support for conditional object inclusion in
2837 # libraries.
2838 if (var ($xlib . '_LIBADD'))
2839 {
2840 if (&handle_lib_objects ($xlib, $xlib . '_LIBADD'))
2841 {
2842 $seen_libobjs = 1;
2843 }
2844 }
2845 else
2846 {
2847 &define_variable ($xlib . "_LIBADD", '', $where);
2848 }
2850 reject_var ("${xlib}_LDADD",
2851 "use '${xlib}_LIBADD', not '${xlib}_LDADD'");
2854 my $linker = &handle_source_transform ($xlib, $onelib, $obj, $where,
2855 NONLIBTOOL => 0, LIBTOOL => 1);
2857 # Determine program to use for link.
2858 my($xlink, $vlink) = &define_per_target_linker_variable ($linker, $xlib);
2859 $vlink = verbose_flag ($vlink || 'GEN');
2861 my $rpathvar = "am_${xlib}_rpath";
2862 my $rpath = "\$($rpathvar)";
2863 foreach my $rcond ($instconds{$onelib}->conds)
2864 {
2865 my $val;
2866 if ($instdirs{$onelib}{$rcond} eq 'EXTRA'
2867 || $instdirs{$onelib}{$rcond} eq 'noinst'
2868 || $instdirs{$onelib}{$rcond} eq 'check')
2869 {
2870 # It's an EXTRA_ library, so we can't specify -rpath,
2871 # because we don't know where the library will end up.
2872 # The user probably knows, but generally speaking automake
2873 # doesn't -- and in fact configure could decide
2874 # dynamically between two different locations.
2875 $val = '';
2876 }
2877 else
2878 {
2879 $val = ('-rpath $(' . $instdirs{$onelib}{$rcond} . 'dir)');
2880 $val .= $instsubdirs{$onelib}{$rcond}
2881 if defined $instsubdirs{$onelib}{$rcond};
2882 }
2883 if ($rcond->true)
2884 {
2885 # If $rcond is true there is only one condition and
2886 # there is no point defining an helper variable.
2887 $rpath = $val;
2888 }
2889 else
2890 {
2891 define_pretty_variable ($rpathvar, $rcond, INTERNAL, $val);
2892 }
2893 }
2895 # If the resulting library lies in a subdirectory,
2896 # make sure this directory will exist.
2897 my $dirstamp = require_build_directory_maybe ($onelib);
2899 # Remember to cleanup .libs/ in this directory.
2900 my $dirname = dirname $onelib;
2901 $libtool_clean_directories{$dirname} = 1;
2903 $output_rules .= &file_contents ('ltlibrary',
2904 $where,
2905 LTLIBRARY => $onelib,
2906 XLTLIBRARY => $xlib,
2907 RPATH => $rpath,
2908 XLINK => $xlink,
2909 VERBOSE => $vlink,
2910 DIRSTAMP => $dirstamp);
2911 if ($seen_libobjs)
2912 {
2913 if (var ($xlib . '_LIBADD'))
2914 {
2915 &check_libobjs_sources ($xlib, $xlib . '_LIBADD');
2916 }
2917 }
2919 if (! $seen_ar)
2920 {
2921 msg ('extra-portability', $where,
2922 "'$onelib': linking libtool libraries using a non-POSIX\n"
2923 . "archiver requires 'AM_PROG_AR' in '$configure_ac'")
2924 }
2925 }
2926 }
2928 # See if any _SOURCES variable were misspelled.
2929 sub check_typos ()
2930 {
2931 # It is ok if the user sets this particular variable.
2932 set_seen 'AM_LDFLAGS';
2934 foreach my $primary ('SOURCES', 'LIBADD', 'LDADD', 'LDFLAGS', 'DEPENDENCIES')
2935 {
2936 foreach my $var (variables $primary)
2937 {
2938 my $varname = $var->name;
2939 # A configure variable is always legitimate.
2940 next if exists $configure_vars{$varname};
2942 for my $cond ($var->conditions->conds)
2943 {
2944 $varname =~ /^(?:EXTRA_)?(?:nobase_)?(?:dist_|nodist_)?(.*)_[[:alnum:]]+$/;
2945 msg_var ('syntax', $var, "variable '$varname' is defined but no"
2946 . " program or\nlibrary has '$1' as canonical name"
2947 . " (possible typo)")
2948 unless $var->rdef ($cond)->seen;
2949 }
2950 }
2951 }
2952 }
2955 # Handle scripts.
2956 sub handle_scripts
2957 {
2958 # NOTE we no longer automatically clean SCRIPTS, because it is
2959 # useful to sometimes distribute scripts verbatim. This happens
2960 # e.g. in Automake itself.
2961 &am_install_var ('-candist', 'scripts', 'SCRIPTS',
2962 'bin', 'sbin', 'libexec', 'pkglibexec', 'pkgdata',
2963 'noinst', 'check');
2964 }
2969 ## ------------------------ ##
2970 ## Handling Texinfo files. ##
2971 ## ------------------------ ##
2973 # ($OUTFILE, $VFILE)
2974 # &scan_texinfo_file ($FILENAME)
2975 # ------------------------------
2976 # $OUTFILE - name of the info file produced by $FILENAME.
2977 # $VFILE - name of the version.texi file used (undef if none).
2978 sub scan_texinfo_file ($)
2979 {
2980 my ($filename) = @_;
2982 my $texi = new Automake::XFile "< $filename";
2983 verb "reading $filename";
2985 my ($outfile, $vfile);
2986 while ($_ = $texi->getline)
2987 {
2988 if (/^\@setfilename +(\S+)/)
2989 {
2990 # Honor only the first @setfilename. (It's possible to have
2991 # more occurrences later if the manual shows examples of how
2992 # to use @setfilename...)
2993 next if $outfile;
2995 $outfile = $1;
2996 # TODO: In Automake 1.14 (or even 1.13.2), start warning against
2997 # TODO: suffixes != ".info", to ease transition to Automake-NG.
2998 if ($outfile =~ /\.([^.]+)$/ && $1 ne 'info')
2999 {
3000 error ("$filename:$.",
3001 "output '$outfile' has unrecognized extension");
3002 return;
3003 }
3004 }
3005 # A "version.texi" file is actually any file whose name matches
3006 # "vers*.texi".
3007 elsif (/^\@include\s+(vers[^.]*\.texi)\s*$/)
3008 {
3009 $vfile = $1;
3010 }
3011 }
3013 if (! $outfile)
3014 {
3015 err_am "'$filename' missing \@setfilename";
3016 return;
3017 }
3019 my $infobase = basename ($filename);
3020 # TODO: In Automake 1.14 (or even 1.13.2), start warning against
3021 # TODO: suffixes != ".texi", to ease transition to Automake-NG.
3022 $infobase =~ s/\.te?xi(nfo)?$//;
3023 return ($outfile, $vfile);
3024 }
3027 # ($DIRSTAMP, @CLEAN_FILES)
3028 # output_texinfo_build_rules ($SOURCE, $DEST, $INSRC, @DEPENDENCIES)
3029 # ------------------------------------------------------------------
3030 # SOURCE - the source Texinfo file
3031 # DEST - the destination Info file
3032 # INSRC - whether DEST should be built in the source tree
3033 # DEPENDENCIES - known dependencies
3034 sub output_texinfo_build_rules ($$$@)
3035 {
3036 my ($source, $dest, $insrc, @deps) = @_;
3038 # Split 'a.texi' into 'a' and '.texi'.
3039 my ($spfx, $ssfx) = ($source =~ /^(.*?)(\.[^.]*)?$/);
3040 my ($dpfx, $dsfx) = ($dest =~ /^(.*?)(\.[^.]*)?$/);
3042 $ssfx ||= "";
3043 $dsfx ||= "";
3045 # We can output two kinds of rules: the "generic" rules use Make
3046 # suffix rules and are appropriate when $source and $dest do not lie
3047 # in a sub-directory; the "specific" rules are needed in the other
3048 # case.
3049 #
3050 # The former are output only once (this is not really apparent here,
3051 # but just remember that some logic deeper in Automake will not
3052 # output the same rule twice); while the later need to be output for
3053 # each Texinfo source.
3054 my $generic;
3055 my $makeinfoflags;
3056 my $sdir = dirname $source;
3057 if ($sdir eq '.' && dirname ($dest) eq '.')
3058 {
3059 $generic = 1;
3060 $makeinfoflags = '-I $(srcdir)';
3061 }
3062 else
3063 {
3064 $generic = 0;
3065 $makeinfoflags = "-I $sdir -I \$(srcdir)/$sdir";
3066 }
3068 # A directory can contain two kinds of info files: some built in the
3069 # source tree, and some built in the build tree. The rules are
3070 # different in each case. However we cannot output two different
3071 # set of generic rules. Because in-source builds are more usual, we
3072 # use generic rules in this case and fall back to "specific" rules
3073 # for build-dir builds. (It should not be a problem to invert this
3074 # if needed.)
3075 $generic = 0 unless $insrc;
3077 # We cannot use a suffix rule to build info files with an empty
3078 # extension. Otherwise we would output a single suffix inference
3079 # rule, with separate dependencies, as in
3080 #
3081 # .texi:
3082 # $(MAKEINFO) ...
3083 # foo.info: foo.texi
3084 #
3085 # which confuse Solaris make. (See the Autoconf manual for
3086 # details.) Therefore we use a specific rule in this case. This
3087 # applies to info files only (dvi and pdf files always have an
3088 # extension).
3089 my $generic_info = ($generic && $dsfx) ? 1 : 0;
3091 # If the resulting file lies in a subdirectory,
3092 # make sure this directory will exist.
3093 my $dirstamp = require_build_directory_maybe ($dest);
3095 my $dipfx = ($insrc ? '$(srcdir)/' : '') . $dpfx;
3097 $output_rules .= file_contents ('texibuild',
3098 new Automake::Location,
3099 AM_V_MAKEINFO => verbose_flag('MAKEINFO'),
3100 AM_V_TEXI2DVI => verbose_flag('TEXI2DVI'),
3101 AM_V_TEXI2PDF => verbose_flag('TEXI2PDF'),
3102 DEPS => "@deps",
3103 DEST_PREFIX => $dpfx,
3104 DEST_INFO_PREFIX => $dipfx,
3105 DEST_SUFFIX => $dsfx,
3106 DIRSTAMP => $dirstamp,
3107 GENERIC => $generic,
3108 GENERIC_INFO => $generic_info,
3109 INSRC => $insrc,
3110 MAKEINFOFLAGS => $makeinfoflags,
3111 SILENT => silent_flag(),
3112 SOURCE => ($generic
3113 ? '$<' : $source),
3114 SOURCE_INFO => ($generic_info
3115 ? '$<' : $source),
3116 SOURCE_REAL => $source,
3117 SOURCE_SUFFIX => $ssfx,
3118 TEXIQUIET => verbose_flag('texinfo'),
3119 TEXIDEVNULL => verbose_flag('texidevnull'),
3120 );
3121 return ($dirstamp, "$dpfx.dvi", "$dpfx.pdf", "$dpfx.ps", "$dpfx.html");
3122 }
3125 # ($MOSTLYCLEAN, $TEXICLEAN, $MAINTCLEAN)
3126 # handle_texinfo_helper ($info_texinfos)
3127 # --------------------------------------
3128 # Handle all Texinfo source; helper for handle_texinfo.
3129 sub handle_texinfo_helper ($)
3130 {
3131 my ($info_texinfos) = @_;
3132 my (@infobase, @info_deps_list, @texi_deps);
3133 my %versions;
3134 my $done = 0;
3135 my (@mostly_cleans, @texi_cleans, @maint_cleans) = ('', '', '');
3137 # Build a regex matching user-cleaned files.
3138 my $d = var 'DISTCLEANFILES';
3139 my $c = var 'CLEANFILES';
3140 my @f = ();
3141 push @f, $d->value_as_list_recursive (inner_expand => 1) if $d;
3142 push @f, $c->value_as_list_recursive (inner_expand => 1) if $c;
3143 @f = map { s|[^A-Za-z_0-9*\[\]\-]|\\$&|g; s|\*|[^/]*|g; $_; } @f;
3144 my $user_cleaned_files = '^(?:' . join ('|', @f) . ')$';
3146 foreach my $texi
3147 ($info_texinfos->value_as_list_recursive (inner_expand => 1))
3148 {
3149 my $infobase = $texi;
3150 # TODO: In Automake 1.14 (or even 1.13.2), start warning against
3151 # TODO: suffixes != ".texi", to ease transition to Automake-NG.
3152 $infobase =~ s/\.(txi|texinfo|texi)$//;
3154 if ($infobase eq $texi)
3155 {
3156 # FIXME: report line number.
3157 err_am "texinfo file '$texi' has unrecognized extension";
3158 next;
3159 }
3161 push @infobase, $infobase;
3163 # If 'version.texi' is referenced by input file, then include
3164 # automatic versioning capability.
3165 my ($out_file, $vtexi) =
3166 scan_texinfo_file ("$relative_dir/$texi")
3167 or next;
3168 # Directory of auxiliary files and build by-products used by texi2dvi
3169 # and texi2pdf.
3170 push @mostly_cleans, "$infobase.t2d";
3171 push @mostly_cleans, "$infobase.t2p";
3173 # If the Texinfo source is in a subdirectory, create the
3174 # resulting info in this subdirectory. If it is in the current
3175 # directory, try hard to not prefix "./" because it breaks the
3176 # generic rules.
3177 my $outdir = dirname ($texi) . '/';
3178 $outdir = "" if $outdir eq './';
3179 $out_file = $outdir . $out_file;
3181 # Until Automake 1.6.3, .info files were built in the
3182 # source tree. This was an obstacle to the support of
3183 # non-distributed .info files, and non-distributed .texi
3184 # files.
3185 #
3186 # * Non-distributed .texi files is important in some packages
3187 # where .texi files are built at make time, probably using
3188 # other binaries built in the package itself, maybe using
3189 # tools or information found on the build host. Because
3190 # these files are not distributed they are always rebuilt
3191 # at make time; they should therefore not lie in the source
3192 # directory. One plan was to support this using
3193 # nodist_info_TEXINFOS or something similar. (Doing this
3194 # requires some sanity checks. For instance Automake should
3195 # not allow:
3196 # dist_info_TEXINFOS = foo.texi
3197 # nodist_foo_TEXINFOS = included.texi
3198 # because a distributed file should never depend on a
3199 # non-distributed file.)
3200 #
3201 # * If .texi files are not distributed, then .info files should
3202 # not be distributed either. There are also cases where one
3203 # wants to distribute .texi files, but does not want to
3204 # distribute the .info files. For instance the Texinfo package
3205 # distributes the tool used to build these files; it would
3206 # be a waste of space to distribute them. It's not clear
3207 # which syntax we should use to indicate that .info files should
3208 # not be distributed. Akim Demaille suggested that eventually
3209 # we switch to a new syntax:
3210 # | Maybe we should take some inspiration from what's already
3211 # | done in the rest of Automake. Maybe there is too much
3212 # | syntactic sugar here, and you want
3213 # | nodist_INFO = bar.info
3214 # | dist_bar_info_SOURCES = bar.texi
3215 # | bar_texi_DEPENDENCIES = foo.texi
3216 # | with a bit of magic to have bar.info represent the whole
3217 # | bar*info set. That's a lot more verbose that the current
3218 # | situation, but it is # not new, hence the user has less
3219 # | to learn.
3220 # |
3221 # | But there is still too much room for meaningless specs:
3222 # | nodist_INFO = bar.info
3223 # | dist_bar_info_SOURCES = bar.texi
3224 # | dist_PS = bar.ps something-written-by-hand.ps
3225 # | nodist_bar_ps_SOURCES = bar.texi
3226 # | bar_texi_DEPENDENCIES = foo.texi
3227 # | here bar.texi is dist_ in line 2, and nodist_ in 4.
3228 #
3229 # Back to the point, it should be clear that in order to support
3230 # non-distributed .info files, we need to build them in the
3231 # build tree, not in the source tree (non-distributed .texi
3232 # files are less of a problem, because we do not output build
3233 # rules for them). In Automake 1.7 .info build rules have been
3234 # largely cleaned up so that .info files get always build in the
3235 # build tree, even when distributed. The idea was that
3236 # (1) if during a VPATH build the .info file was found to be
3237 # absent or out-of-date (in the source tree or in the
3238 # build tree), Make would rebuild it in the build tree.
3239 # If an up-to-date source-tree of the .info file existed,
3240 # make would not rebuild it in the build tree.
3241 # (2) having two copies of .info files, one in the source tree
3242 # and one (newer) in the build tree is not a problem
3243 # because 'make dist' always pick files in the build tree
3244 # first.
3245 # However it turned out the be a bad idea for several reasons:
3246 # * Tru64, OpenBSD, and FreeBSD (not NetBSD) Make do not behave
3247 # like GNU Make on point (1) above. These implementations
3248 # of Make would always rebuild .info files in the build
3249 # tree, even if such files were up to date in the source
3250 # tree. Consequently, it was impossible to perform a VPATH
3251 # build of a package containing Texinfo files using these
3252 # Make implementations.
3253 # (Refer to the Autoconf Manual, section "Limitation of
3254 # Make", paragraph "VPATH", item "target lookup", for
3255 # an account of the differences between these
3256 # implementations.)
3257 # * The GNU Coding Standards require these files to be built
3258 # in the source-tree (when they are distributed, that is).
3259 # * Keeping a fresher copy of distributed files in the
3260 # build tree can be annoying during development because
3261 # - if the files is kept under CVS, you really want it
3262 # to be updated in the source tree
3263 # - it is confusing that 'make distclean' does not erase
3264 # all files in the build tree.
3265 #
3266 # Consequently, starting with Automake 1.8, .info files are
3267 # built in the source tree again. Because we still plan to
3268 # support non-distributed .info files at some point, we
3269 # have a single variable ($INSRC) that controls whether
3270 # the current .info file must be built in the source tree
3271 # or in the build tree. Actually this variable is switched
3272 # off for .info files that appear to be cleaned; this is
3273 # for backward compatibility with package such as Texinfo,
3274 # which do things like
3275 # info_TEXINFOS = texinfo.txi info-stnd.texi info.texi
3276 # DISTCLEANFILES = texinfo texinfo-* info*.info*
3277 # # Do not create info files for distribution.
3278 # dist-info:
3279 # in order not to distribute .info files.
3280 my $insrc = ($out_file =~ $user_cleaned_files) ? 0 : 1;
3282 my $soutdir = '$(srcdir)/' . $outdir;
3283 $outdir = $soutdir if $insrc;
3285 # If user specified file_TEXINFOS, then use that as explicit
3286 # dependency list.
3287 @texi_deps = ();
3288 push (@texi_deps, "$soutdir$vtexi") if $vtexi;
3290 my $canonical = canonicalize ($infobase);
3291 if (var ($canonical . "_TEXINFOS"))
3292 {
3293 push (@texi_deps, '$(' . $canonical . '_TEXINFOS)');
3294 push_dist_common ('$(' . $canonical . '_TEXINFOS)');
3295 }
3297 my ($dirstamp, @cfiles) =
3298 output_texinfo_build_rules ($texi, $out_file, $insrc, @texi_deps);
3299 push (@texi_cleans, @cfiles);
3301 push (@info_deps_list, $out_file);
3303 # If a vers*.texi file is needed, emit the rule.
3304 if ($vtexi)
3305 {
3306 err_am ("'$vtexi', included in '$texi', "
3307 . "also included in '$versions{$vtexi}'")
3308 if defined $versions{$vtexi};
3309 $versions{$vtexi} = $texi;
3311 # We number the stamp-vti files. This is doable since the
3312 # actual names don't matter much. We only number starting
3313 # with the second one, so that the common case looks nice.
3314 my $vti = ($done ? $done : 'vti');
3315 ++$done;
3317 # This is ugly, but it is our historical practice.
3318 if ($config_aux_dir_set_in_configure_ac)
3319 {
3320 require_conf_file_with_macro (TRUE, 'info_TEXINFOS', FOREIGN,
3321 'mdate-sh');
3322 }
3323 else
3324 {
3325 require_file_with_macro (TRUE, 'info_TEXINFOS',
3326 FOREIGN, 'mdate-sh');
3327 }
3329 my $conf_dir;
3330 if ($config_aux_dir_set_in_configure_ac)
3331 {
3332 $conf_dir = "$am_config_aux_dir/";
3333 }
3334 else
3335 {
3336 $conf_dir = '$(srcdir)/';
3337 }
3338 $output_rules .= file_contents ('texi-vers',
3339 new Automake::Location,
3340 TEXI => $texi,
3341 VTI => $vti,
3342 STAMPVTI => "${soutdir}stamp-$vti",
3343 VTEXI => "$soutdir$vtexi",
3344 MDDIR => $conf_dir,
3345 DIRSTAMP => $dirstamp);
3346 }
3347 }
3349 # Handle location of texinfo.tex.
3350 my $need_texi_file = 0;
3351 my $texinfodir;
3352 if (var ('TEXINFO_TEX'))
3353 {
3354 # The user defined TEXINFO_TEX so assume he knows what he is
3355 # doing.
3356 $texinfodir = ('$(srcdir)/'
3357 . dirname (variable_value ('TEXINFO_TEX')));
3358 }
3359 elsif ($config_aux_dir_set_in_configure_ac)
3360 {
3361 $texinfodir = $am_config_aux_dir;
3362 define_variable ('TEXINFO_TEX', "$texinfodir/texinfo.tex", INTERNAL);
3363 $need_texi_file = 2; # so that we require_conf_file later
3364 }
3365 else
3366 {
3367 $texinfodir = '$(srcdir)';
3368 $need_texi_file = 1;
3369 }
3370 define_variable ('am__TEXINFO_TEX_DIR', $texinfodir, INTERNAL);
3372 push (@dist_targets, 'dist-info');
3374 if (! option 'no-installinfo')
3375 {
3376 # Make sure documentation is made and installed first. Use
3377 # $(INFO_DEPS), not 'info', because otherwise recursive makes
3378 # get run twice during "make all".
3379 unshift (@all, '$(INFO_DEPS)');
3380 }
3382 define_files_variable ("DVIS", @infobase, 'dvi', INTERNAL);
3383 define_files_variable ("PDFS", @infobase, 'pdf', INTERNAL);
3384 define_files_variable ("PSS", @infobase, 'ps', INTERNAL);
3385 define_files_variable ("HTMLS", @infobase, 'html', INTERNAL);
3387 # This next isn't strictly needed now -- the places that look here
3388 # could easily be changed to look in info_TEXINFOS. But this is
3389 # probably better, in case noinst_TEXINFOS is ever supported.
3390 define_variable ("TEXINFOS", variable_value ('info_TEXINFOS'), INTERNAL);
3392 # Do some error checking. Note that this file is not required
3393 # when in Cygnus mode; instead we defined TEXINFO_TEX explicitly
3394 # up above.
3395 if ($need_texi_file && ! option 'no-texinfo.tex')
3396 {
3397 if ($need_texi_file > 1)
3398 {
3399 require_conf_file_with_macro (TRUE, 'info_TEXINFOS', FOREIGN,
3400 'texinfo.tex');
3401 }
3402 else
3403 {
3404 require_file_with_macro (TRUE, 'info_TEXINFOS', FOREIGN,
3405 'texinfo.tex');
3406 }
3407 }
3409 return (makefile_wrap ("", "\t ", @mostly_cleans),
3410 makefile_wrap ("", "\t ", @texi_cleans),
3411 makefile_wrap ("", "\t ", @maint_cleans));
3412 }
3415 # handle_texinfo ()
3416 # -----------------
3417 # Handle all Texinfo source.
3418 sub handle_texinfo ()
3419 {
3420 reject_var 'TEXINFOS', "'TEXINFOS' is an anachronism; use 'info_TEXINFOS'";
3421 # FIXME: I think this is an obsolete future feature name.
3422 reject_var 'html_TEXINFOS', "HTML generation not yet supported";
3424 my $info_texinfos = var ('info_TEXINFOS');
3425 my ($mostlyclean, $clean, $maintclean) = ('', '', '');
3426 if ($info_texinfos)
3427 {
3428 define_verbose_texinfo;
3429 ($mostlyclean, $clean, $maintclean) = handle_texinfo_helper ($info_texinfos);
3430 chomp $mostlyclean;
3431 chomp $clean;
3432 chomp $maintclean;
3433 }
3435 $output_rules .= file_contents ('texinfos',
3436 new Automake::Location,
3437 AM_V_DVIPS => verbose_flag('DVIPS'),
3438 MOSTLYCLEAN => $mostlyclean,
3439 TEXICLEAN => $clean,
3440 MAINTCLEAN => $maintclean,
3441 'LOCAL-TEXIS' => !!$info_texinfos,
3442 TEXIQUIET => verbose_flag('texinfo'));
3443 }
3446 # Handle any man pages.
3447 sub handle_man_pages
3448 {
3449 reject_var 'MANS', "'MANS' is an anachronism; use 'man_MANS'";
3451 # Find all the sections in use. We do this by first looking for
3452 # "standard" sections, and then looking for any additional
3453 # sections used in man_MANS.
3454 my (%sections, %notrans_sections, %trans_sections,
3455 %notrans_vars, %trans_vars, %notrans_sect_vars, %trans_sect_vars);
3456 # We handle nodist_ for uniformity. man pages aren't distributed
3457 # by default so it isn't actually very important.
3458 foreach my $npfx ('', 'notrans_')
3459 {
3460 foreach my $pfx ('', 'dist_', 'nodist_')
3461 {
3462 # Add more sections as needed.
3463 foreach my $section ('0'..'9', 'n', 'l')
3464 {
3465 my $varname = $npfx . $pfx . 'man' . $section . '_MANS';
3466 if (var ($varname))
3467 {
3468 $sections{$section} = 1;
3469 $varname = '$(' . $varname . ')';
3470 if ($npfx eq 'notrans_')
3471 {
3472 $notrans_sections{$section} = 1;
3473 $notrans_sect_vars{$varname} = 1;
3474 }
3475 else
3476 {
3477 $trans_sections{$section} = 1;
3478 $trans_sect_vars{$varname} = 1;
3479 }
3481 &push_dist_common ($varname)
3482 if $pfx eq 'dist_';
3483 }
3484 }
3486 my $varname = $npfx . $pfx . 'man_MANS';
3487 my $var = var ($varname);
3488 if ($var)
3489 {
3490 foreach ($var->value_as_list_recursive)
3491 {
3492 # A page like 'foo.1c' goes into man1dir.
3493 if (/\.([0-9a-z])([a-z]*)$/)
3494 {
3495 $sections{$1} = 1;
3496 if ($npfx eq 'notrans_')
3497 {
3498 $notrans_sections{$1} = 1;
3499 }
3500 else
3501 {
3502 $trans_sections{$1} = 1;
3503 }
3504 }
3505 }
3507 $varname = '$(' . $varname . ')';
3508 if ($npfx eq 'notrans_')
3509 {
3510 $notrans_vars{$varname} = 1;
3511 }
3512 else
3513 {
3514 $trans_vars{$varname} = 1;
3515 }
3516 &push_dist_common ($varname)
3517 if $pfx eq 'dist_';
3518 }
3519 }
3520 }
3522 return unless %sections;
3524 my @unsorted_deps;
3526 # Build section independent variables.
3527 my $have_notrans = %notrans_vars;
3528 my @notrans_list = sort keys %notrans_vars;
3529 my $have_trans = %trans_vars;
3530 my @trans_list = sort keys %trans_vars;
3532 # Now for each section, generate an install and uninstall rule.
3533 # Sort sections so output is deterministic.
3534 foreach my $section (sort keys %sections)
3535 {
3536 # Build section dependent variables.
3537 my $notrans_mans = $have_notrans || exists $notrans_sections{$section};
3538 my $trans_mans = $have_trans || exists $trans_sections{$section};
3539 my (%notrans_this_sect, %trans_this_sect);
3540 my $expr = 'man' . $section . '_MANS';
3541 foreach my $varname (keys %notrans_sect_vars)
3542 {
3543 if ($varname =~ /$expr/)
3544 {
3545 $notrans_this_sect{$varname} = 1;
3546 }
3547 }
3548 foreach my $varname (keys %trans_sect_vars)
3549 {
3550 if ($varname =~ /$expr/)
3551 {
3552 $trans_this_sect{$varname} = 1;
3553 }
3554 }
3555 my @notrans_sect_list = sort keys %notrans_this_sect;
3556 my @trans_sect_list = sort keys %trans_this_sect;
3557 @unsorted_deps = (keys %notrans_vars, keys %trans_vars,
3558 keys %notrans_this_sect, keys %trans_this_sect);
3559 my @deps = sort @unsorted_deps;
3560 $output_rules .= &file_contents ('mans',
3561 new Automake::Location,
3562 SECTION => $section,
3563 DEPS => "@deps",
3564 NOTRANS_MANS => $notrans_mans,
3565 NOTRANS_SECT_LIST => "@notrans_sect_list",
3566 HAVE_NOTRANS => $have_notrans,
3567 NOTRANS_LIST => "@notrans_list",
3568 TRANS_MANS => $trans_mans,
3569 TRANS_SECT_LIST => "@trans_sect_list",
3570 HAVE_TRANS => $have_trans,
3571 TRANS_LIST => "@trans_list");
3572 }
3574 @unsorted_deps = (keys %notrans_vars, keys %trans_vars,
3575 keys %notrans_sect_vars, keys %trans_sect_vars);
3576 my @mans = sort @unsorted_deps;
3577 $output_vars .= file_contents ('mans-vars',
3578 new Automake::Location,
3579 MANS => "@mans");
3581 push (@all, '$(MANS)')
3582 unless option 'no-installman';
3583 }
3585 # Handle DATA variables.
3586 sub handle_data
3587 {
3588 &am_install_var ('-noextra', '-candist', 'data', 'DATA',
3589 'data', 'dataroot', 'doc', 'dvi', 'html', 'pdf',
3590 'ps', 'sysconf', 'sharedstate', 'localstate',
3591 'pkgdata', 'lisp', 'noinst', 'check');
3592 }
3594 # Handle TAGS.
3595 sub handle_tags
3596 {
3597 my @config;
3598 foreach my $spec (@config_headers)
3599 {
3600 my ($out, @ins) = split_config_file_spec ($spec);
3601 foreach my $in (@ins)
3602 {
3603 # If the config header source is in this directory,
3604 # require it.
3605 push @config, basename ($in)
3606 if $relative_dir eq dirname ($in);
3607 }
3608 }
3610 define_variable ('am__tagged_files',
3611 '$(HEADERS) $(SOURCES) $(TAGS_FILES) $(LISP)'
3612 . "@config", INTERNAL);
3614 if (rvar('am__tagged_files')->value_as_list_recursive
3615 || var ('ETAGS_ARGS') || var ('SUBDIRS'))
3616 {
3617 $output_rules .= &file_contents ('tags', new Automake::Location);
3618 set_seen 'TAGS_DEPENDENCIES';
3619 }
3620 else
3621 {
3622 reject_var ('TAGS_DEPENDENCIES',
3623 "it doesn't make sense to define 'TAGS_DEPENDENCIES'"
3624 . " without\nsources or 'ETAGS_ARGS'");
3625 # Every Makefile must define some sort of TAGS rule.
3626 # Otherwise, it would be possible for a top-level "make TAGS"
3627 # to fail because some subdirectory failed. Ditto ctags and
3628 # cscope.
3629 $output_rules .=
3630 "tags TAGS:\n\n" .
3631 "ctags CTAGS:\n\n" .
3632 "cscope cscopelist:\n\n";
3633 }
3634 }
3637 # user_phony_rule ($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 # handle_dist
3663 # -----------
3664 # Handle 'dist' target.
3665 sub handle_dist ()
3666 {
3667 # Substitutions for distdir.am
3668 my %transform;
3670 # Define DIST_SUBDIRS. This must always be done, regardless of the
3671 # no-dist setting: target like 'distclean' or 'maintainer-clean' use it.
3672 my $subdirs = var ('SUBDIRS');
3673 if ($subdirs)
3674 {
3675 # If SUBDIRS is conditionally defined, then set DIST_SUBDIRS
3676 # to all possible directories, and use it. If DIST_SUBDIRS is
3677 # defined, just use it.
3679 # Note that we check DIST_SUBDIRS first on purpose, so that
3680 # we don't call has_conditional_contents for now reason.
3681 # (In the past one project used so many conditional subdirectories
3682 # that calling has_conditional_contents on SUBDIRS caused
3683 # automake to grow to 150Mb -- this should not happen with
3684 # the current implementation of has_conditional_contents,
3685 # but it's more efficient to avoid the call anyway.)
3686 if (var ('DIST_SUBDIRS'))
3687 {
3688 }
3689 elsif ($subdirs->has_conditional_contents)
3690 {
3691 define_pretty_variable
3692 ('DIST_SUBDIRS', TRUE, INTERNAL,
3693 uniq ($subdirs->value_as_list_recursive));
3694 }
3695 else
3696 {
3697 # We always define this because that is what 'distclean'
3698 # wants.
3699 define_pretty_variable ('DIST_SUBDIRS', TRUE, INTERNAL,
3700 '$(SUBDIRS)');
3701 }
3702 }
3704 # The remaining definitions are only required when a dist target is used.
3705 return if option 'no-dist';
3707 # At least one of the archive formats must be enabled.
3708 if ($relative_dir eq '.')
3709 {
3710 my $archive_defined = option 'no-dist-gzip' ? 0 : 1;
3711 $archive_defined ||=
3712 grep { option "dist-$_" } qw(shar zip tarZ bzip2 lzip xz);
3713 error (option 'no-dist-gzip',
3714 "no-dist-gzip specified but no dist-* specified,\n"
3715 . "at least one archive format must be enabled")
3716 unless $archive_defined;
3717 }
3719 # Look for common files that should be included in distribution.
3720 # If the aux dir is set, and it does not have a Makefile.am, then
3721 # we check for these files there as well.
3722 my $check_aux = 0;
3723 if ($relative_dir eq '.'
3724 && $config_aux_dir_set_in_configure_ac)
3725 {
3726 if (! &is_make_dir ($config_aux_dir))
3727 {
3728 $check_aux = 1;
3729 }
3730 }
3731 foreach my $cfile (@common_files)
3732 {
3733 if (dir_has_case_matching_file ($relative_dir, $cfile)
3734 # The file might be absent, but if it can be built it's ok.
3735 || rule $cfile)
3736 {
3737 &push_dist_common ($cfile);
3738 }
3740 # Don't use 'elsif' here because a file might meaningfully
3741 # appear in both directories.
3742 if ($check_aux && dir_has_case_matching_file ($config_aux_dir, $cfile))
3743 {
3744 &push_dist_common ("$config_aux_dir/$cfile")
3745 }
3746 }
3748 # We might copy elements from $configure_dist_common to
3749 # %dist_common if we think we need to. If the file appears in our
3750 # directory, we would have discovered it already, so we don't
3751 # check that. But if the file is in a subdir without a Makefile,
3752 # we want to distribute it here if we are doing '.'. Ugly!
3753 # Also, in some corner cases, it's possible that the following code
3754 # will cause the same file to appear in the $(DIST_COMMON) variables
3755 # of two distinct Makefiles; but this is not a problem, since the
3756 # 'distdir' target in 'lib/am/distdir.am' can deal with the same
3757 # file being distributed multiple times.
3758 # See also automake bug#9651.
3759 if ($relative_dir eq '.')
3760 {
3761 foreach my $file (split (' ' , $configure_dist_common))
3762 {
3763 my $dir = dirname ($file);
3764 push_dist_common ($file)
3765 if ($dir eq '.' || ! is_make_dir ($dir));
3766 }
3767 }
3769 # Files to distributed. Don't use ->value_as_list_recursive
3770 # as it recursively expands '$(dist_pkgdata_DATA)' etc.
3771 my @dist_common = split (' ', rvar ('DIST_COMMON')->variable_value);
3772 @dist_common = uniq @dist_common;
3773 variable_delete 'DIST_COMMON';
3774 define_pretty_variable ('DIST_COMMON', TRUE, INTERNAL, @dist_common);
3776 # Now that we've processed DIST_COMMON, disallow further attempts
3777 # to set it.
3778 $handle_dist_run = 1;
3780 $transform{'DISTCHECK-HOOK'} = !! rule 'distcheck-hook';
3781 $transform{'GETTEXT'} = $seen_gettext && !$seen_gettext_external;
3783 # If the target 'dist-hook' exists, make sure it is run. This
3784 # allows users to do random weird things to the distribution
3785 # before it is packaged up.
3786 push (@dist_targets, 'dist-hook')
3787 if user_phony_rule 'dist-hook';
3788 $transform{'DIST-TARGETS'} = join (' ', @dist_targets);
3790 my $flm = option ('filename-length-max');
3791 my $filename_filter = $flm ? '.' x $flm->[1] : '';
3793 $output_rules .= &file_contents ('distdir',
3794 new Automake::Location,
3795 %transform,
3796 FILENAME_FILTER => $filename_filter);
3797 }
3800 # check_directory ($NAME, $WHERE [, $RELATIVE_DIR = "."])
3801 # -------------------------------------------------------
3802 # Ensure $NAME is a directory (in $RELATIVE_DIR), and that it uses a sane
3803 # name. Use $WHERE as a location in the diagnostic, if any.
3804 sub check_directory ($$;$)
3805 {
3806 my ($dir, $where, $reldir) = @_;
3807 $reldir = '.' unless defined $reldir;
3809 error $where, "required directory $reldir/$dir does not exist"
3810 unless -d "$reldir/$dir";
3812 # If an 'obj/' directory exists, BSD make will enter it before
3813 # reading 'Makefile'. Hence the 'Makefile' in the current directory
3814 # will not be read.
3815 #
3816 # % cat Makefile
3817 # all:
3818 # echo Hello
3819 # % cat obj/Makefile
3820 # all:
3821 # echo World
3822 # % make # GNU make
3823 # echo Hello
3824 # Hello
3825 # % pmake # BSD make
3826 # echo World
3827 # World
3828 msg ('portability', $where,
3829 "naming a subdirectory 'obj' causes troubles with BSD make")
3830 if $dir eq 'obj';
3832 # 'aux' is probably the most important of the following forbidden name,
3833 # since it's tempting to use it as an AC_CONFIG_AUX_DIR.
3834 msg ('portability', $where,
3835 "name '$dir' is reserved on W32 and DOS platforms")
3836 if grep (/^\Q$dir\E$/i, qw/aux lpt1 lpt2 lpt3 com1 com2 com3 com4 con prn/);
3837 }
3839 # check_directories_in_var ($VARIABLE)
3840 # ------------------------------------
3841 # Recursively check all items in variables $VARIABLE as directories
3842 sub check_directories_in_var ($)
3843 {
3844 my ($var) = @_;
3845 $var->traverse_recursively
3846 (sub
3847 {
3848 my ($var, $val, $cond, $full_cond) = @_;
3849 check_directory ($val, $var->rdef ($cond)->location, $relative_dir);
3850 return ();
3851 },
3852 undef,
3853 skip_ac_subst => 1);
3854 }
3856 # &handle_subdirs ()
3857 # ------------------
3858 # Handle subdirectories.
3859 sub handle_subdirs ()
3860 {
3861 my $subdirs = var ('SUBDIRS');
3862 return
3863 unless $subdirs;
3865 check_directories_in_var $subdirs;
3867 my $dsubdirs = var ('DIST_SUBDIRS');
3868 check_directories_in_var $dsubdirs
3869 if $dsubdirs;
3871 $output_rules .= &file_contents ('subdirs', new Automake::Location);
3872 rvar ('RECURSIVE_TARGETS')->rdef (TRUE)->{'pretty'} = VAR_SORTED; # Gross!
3873 }
3876 # ($REGEN, @DEPENDENCIES)
3877 # &scan_aclocal_m4
3878 # ----------------
3879 # If aclocal.m4 creation is automated, return the list of its dependencies.
3880 sub scan_aclocal_m4 ()
3881 {
3882 my $regen_aclocal = 0;
3884 set_seen 'CONFIG_STATUS_DEPENDENCIES';
3885 set_seen 'CONFIGURE_DEPENDENCIES';
3887 if (-f 'aclocal.m4')
3888 {
3889 &define_variable ("ACLOCAL_M4", '$(top_srcdir)/aclocal.m4', INTERNAL);
3891 my $aclocal = new Automake::XFile "< aclocal.m4";
3892 my $line = $aclocal->getline;
3893 $regen_aclocal = $line =~ 'generated automatically by aclocal';
3894 }
3896 my @ac_deps = ();
3898 if (set_seen ('ACLOCAL_M4_SOURCES'))
3899 {
3900 push (@ac_deps, '$(ACLOCAL_M4_SOURCES)');
3901 msg_var ('obsolete', 'ACLOCAL_M4_SOURCES',
3902 "'ACLOCAL_M4_SOURCES' is obsolete.\n"
3903 . "It should be safe to simply remove it");
3904 }
3906 # Note that it might be possible that aclocal.m4 doesn't exist but
3907 # should be auto-generated. This case probably isn't very
3908 # important.
3910 return ($regen_aclocal, @ac_deps);
3911 }
3914 # Helper function for substitute_ac_subst_variables.
3915 sub substitute_ac_subst_variables_worker($)
3916 {
3917 my ($token) = @_;
3918 return "\@$token\@" if var $token;
3919 return "\${$token\}";
3920 }
3922 # substitute_ac_subst_variables ($TEXT)
3923 # -------------------------------------
3924 # Replace any occurrence of ${FOO} in $TEXT by @FOO@ if FOO is an AC_SUBST
3925 # variable.
3926 sub substitute_ac_subst_variables ($)
3927 {
3928 my ($text) = @_;
3929 $text =~ s/\${([^ \t=:+{}]+)}/&substitute_ac_subst_variables_worker ($1)/ge;
3930 return $text;
3931 }
3933 # @DEPENDENCIES
3934 # &prepend_srcdir (@INPUTS)
3935 # -------------------------
3936 # Prepend $(srcdir) or $(top_srcdir) to all @INPUTS. The idea is that
3937 # if an input file has a directory part the same as the current
3938 # directory, then the directory part is simply replaced by $(srcdir).
3939 # But if the directory part is different, then $(top_srcdir) is
3940 # prepended.
3941 sub prepend_srcdir (@)
3942 {
3943 my (@inputs) = @_;
3944 my @newinputs;
3946 foreach my $single (@inputs)
3947 {
3948 if (dirname ($single) eq $relative_dir)
3949 {
3950 push (@newinputs, '$(srcdir)/' . basename ($single));
3951 }
3952 else
3953 {
3954 push (@newinputs, '$(top_srcdir)/' . $single);
3955 }
3956 }
3957 return @newinputs;
3958 }
3960 # @DEPENDENCIES
3961 # rewrite_inputs_into_dependencies ($OUTPUT, @INPUTS)
3962 # ---------------------------------------------------
3963 # Compute a list of dependencies appropriate for the rebuild
3964 # rule of
3965 # AC_CONFIG_FILES($OUTPUT:$INPUT[0]:$INPUTS[1]:...)
3966 # Also distribute $INPUTs which are not built by another AC_CONFIG_FOOs.
3967 sub rewrite_inputs_into_dependencies ($@)
3968 {
3969 my ($file, @inputs) = @_;
3970 my @res = ();
3972 for my $i (@inputs)
3973 {
3974 # We cannot create dependencies on shell variables.
3975 next if (substitute_ac_subst_variables $i) =~ /\$/;
3977 if (exists $ac_config_files_location{$i} && $i ne $file)
3978 {
3979 my $di = dirname $i;
3980 if ($di eq $relative_dir)
3981 {
3982 $i = basename $i;
3983 }
3984 # In the top-level Makefile we do not use $(top_builddir), because
3985 # we are already there, and since the targets are built without
3986 # a $(top_builddir), it helps BSD Make to match them with
3987 # dependencies.
3988 elsif ($relative_dir ne '.')
3989 {
3990 $i = '$(top_builddir)/' . $i;
3991 }
3992 }
3993 else
3994 {
3995 msg ('error', $ac_config_files_location{$file},
3996 "required file '$i' not found")
3997 unless $i =~ /\$/ || exists $output_files{$i} || -f $i;
3998 ($i) = prepend_srcdir ($i);
3999 push_dist_common ($i);
4000 }
4001 push @res, $i;
4002 }
4003 return @res;
4004 }
4008 # &handle_configure ($MAKEFILE_AM, $MAKEFILE_IN, $MAKEFILE, @INPUTS)
4009 # ------------------------------------------------------------------
4010 # Handle remaking and configure stuff.
4011 # We need the name of the input file, to do proper remaking rules.
4012 sub handle_configure ($$$@)
4013 {
4014 my ($makefile_am, $makefile_in, $makefile, @inputs) = @_;
4016 prog_error 'empty @inputs'
4017 unless @inputs;
4019 my ($rel_makefile_am, $rel_makefile_in) = prepend_srcdir ($makefile_am,
4020 $makefile_in);
4021 my $rel_makefile = basename $makefile;
4023 my $colon_infile = ':' . join (':', @inputs);
4024 $colon_infile = '' if $colon_infile eq ":$makefile.in";
4025 my @rewritten = rewrite_inputs_into_dependencies ($makefile, @inputs);
4026 my ($regen_aclocal_m4, @aclocal_m4_deps) = scan_aclocal_m4;
4027 define_pretty_variable ('am__aclocal_m4_deps', TRUE, INTERNAL,
4028 @configure_deps, @aclocal_m4_deps,
4029 '$(top_srcdir)/' . $configure_ac);
4030 my @configuredeps = ('$(am__aclocal_m4_deps)', '$(CONFIGURE_DEPENDENCIES)');
4031 push @configuredeps, '$(ACLOCAL_M4)' if -f 'aclocal.m4';
4032 define_pretty_variable ('am__configure_deps', TRUE, INTERNAL,
4033 @configuredeps);
4035 my $automake_options = '--' . $strictness_name .
4036 (global_option 'no-dependencies' ? ' --ignore-deps' : '');
4038 $output_rules .= file_contents
4039 ('configure',
4040 new Automake::Location,
4041 MAKEFILE => $rel_makefile,
4042 'MAKEFILE-DEPS' => "@rewritten",
4043 'CONFIG-MAKEFILE' => ($relative_dir eq '.') ? '$@' : '$(subdir)/$@',
4044 'MAKEFILE-IN' => $rel_makefile_in,
4045 'HAVE-MAKEFILE-IN-DEPS' => (@include_stack > 0),
4046 'MAKEFILE-IN-DEPS' => "@include_stack",
4047 'MAKEFILE-AM' => $rel_makefile_am,
4048 'AUTOMAKE-OPTIONS' => $automake_options,
4049 'MAKEFILE-AM-SOURCES' => "$makefile$colon_infile",
4050 'REGEN-ACLOCAL-M4' => $regen_aclocal_m4,
4051 VERBOSE => verbose_flag ('GEN'));
4053 if ($relative_dir eq '.')
4054 {
4055 &push_dist_common ('acconfig.h')
4056 if -f 'acconfig.h';
4057 }
4059 # If we have a configure header, require it.
4060 my $hdr_index = 0;
4061 my @distclean_config;
4062 foreach my $spec (@config_headers)
4063 {
4064 $hdr_index += 1;
4065 # $CONFIG_H_PATH: config.h from top level.
4066 my ($config_h_path, @ins) = split_config_file_spec ($spec);
4067 my $config_h_dir = dirname ($config_h_path);
4069 # If the header is in the current directory we want to build
4070 # the header here. Otherwise, if we're at the topmost
4071 # directory and the header's directory doesn't have a
4072 # Makefile, then we also want to build the header.
4073 if ($relative_dir eq $config_h_dir
4074 || ($relative_dir eq '.' && ! &is_make_dir ($config_h_dir)))
4075 {
4076 my ($cn_sans_dir, $stamp_dir);
4077 if ($relative_dir eq $config_h_dir)
4078 {
4079 $cn_sans_dir = basename ($config_h_path);
4080 $stamp_dir = '';
4081 }
4082 else
4083 {
4084 $cn_sans_dir = $config_h_path;
4085 if ($config_h_dir eq '.')
4086 {
4087 $stamp_dir = '';
4088 }
4089 else
4090 {
4091 $stamp_dir = $config_h_dir . '/';
4092 }
4093 }
4095 # This will also distribute all inputs.
4096 @ins = rewrite_inputs_into_dependencies ($config_h_path, @ins);
4098 # Cannot define rebuild rules for filenames with shell variables.
4099 next if (substitute_ac_subst_variables $config_h_path) =~ /\$/;
4101 # Header defined in this directory.
4102 my @files;
4103 if (-f $config_h_path . '.top')
4104 {
4105 push (@files, "$cn_sans_dir.top");
4106 }
4107 if (-f $config_h_path . '.bot')
4108 {
4109 push (@files, "$cn_sans_dir.bot");
4110 }
4112 push_dist_common (@files);
4114 # For now, acconfig.h can only appear in the top srcdir.
4115 if (-f 'acconfig.h')
4116 {
4117 push (@files, '$(top_srcdir)/acconfig.h');
4118 }
4120 my $stamp = "${stamp_dir}stamp-h${hdr_index}";
4121 $output_rules .=
4122 file_contents ('remake-hdr',
4123 new Automake::Location,
4124 FILES => "@files",
4125 'FIRST-HDR' => ($hdr_index == 1),
4126 CONFIG_H => $cn_sans_dir,
4127 CONFIG_HIN => $ins[0],
4128 CONFIG_H_DEPS => "@ins",
4129 CONFIG_H_PATH => $config_h_path,
4130 STAMP => "$stamp");
4132 push @distclean_config, $cn_sans_dir, $stamp;
4133 }
4134 }
4136 $output_rules .= file_contents ('clean-hdr',
4137 new Automake::Location,
4138 FILES => "@distclean_config")
4139 if @distclean_config;
4141 # Distribute and define mkinstalldirs only if it is already present
4142 # in the package, for backward compatibility (some people may still
4143 # use $(mkinstalldirs)).
4144 # TODO: start warning about this in Automake 1.13.2, and have
4145 # TODO: Automake 1.14 or 1.15 drop it (and the mkinstalldirs script
4146 # TODO: as well).
4147 my $mkidpath = "$config_aux_dir/mkinstalldirs";
4148 if (-f $mkidpath)
4149 {
4150 # Use require_file so that any existing script gets updated
4151 # by --force-missing.
4152 require_conf_file ($mkidpath, FOREIGN, 'mkinstalldirs');
4153 define_variable ('mkinstalldirs',
4154 "\$(SHELL) $am_config_aux_dir/mkinstalldirs", INTERNAL);
4155 }
4156 else
4157 {
4158 # Use $(install_sh), not $(MKDIR_P) because the latter requires
4159 # at least one argument, and $(mkinstalldirs) used to work
4160 # even without arguments (e.g. $(mkinstalldirs) $(conditional_dir)).
4161 define_variable ('mkinstalldirs', '$(install_sh) -d', INTERNAL);
4162 }
4164 reject_var ('CONFIG_HEADER',
4165 "'CONFIG_HEADER' is an anachronism; now determined "
4166 . "automatically\nfrom '$configure_ac'");
4168 my @config_h;
4169 foreach my $spec (@config_headers)
4170 {
4171 my ($out, @ins) = split_config_file_spec ($spec);
4172 # Generate CONFIG_HEADER define.
4173 if ($relative_dir eq dirname ($out))
4174 {
4175 push @config_h, basename ($out);
4176 }
4177 else
4178 {
4179 push @config_h, "\$(top_builddir)/$out";
4180 }
4181 }
4182 define_variable ("CONFIG_HEADER", "@config_h", INTERNAL)
4183 if @config_h;
4185 # Now look for other files in this directory which must be remade
4186 # by config.status, and generate rules for them.
4187 my @actual_other_files = ();
4188 # These get cleaned only in a VPATH build.
4189 my @actual_other_vpath_files = ();
4190 foreach my $lfile (@other_input_files)
4191 {
4192 my $file;
4193 my @inputs;
4194 if ($lfile =~ /^([^:]*):(.*)$/)
4195 {
4196 # This is the ":" syntax of AC_OUTPUT.
4197 $file = $1;
4198 @inputs = split (':', $2);
4199 }
4200 else
4201 {
4202 # Normal usage.
4203 $file = $lfile;
4204 @inputs = $file . '.in';
4205 }
4207 # Automake files should not be stored in here, but in %MAKE_LIST.
4208 prog_error ("$lfile in \@other_input_files\n"
4209 . "\@other_input_files = (@other_input_files)")
4210 if -f $file . '.am';
4212 my $local = basename ($file);
4214 # We skip files that aren't in this directory. However, if
4215 # the file's directory does not have a Makefile, and we are
4216 # currently doing '.', then we create a rule to rebuild the
4217 # file in the subdir.
4218 my $fd = dirname ($file);
4219 if ($fd ne $relative_dir)
4220 {
4221 if ($relative_dir eq '.' && ! &is_make_dir ($fd))
4222 {
4223 $local = $file;
4224 }
4225 else
4226 {
4227 next;
4228 }
4229 }
4231 my @rewritten_inputs = rewrite_inputs_into_dependencies ($file, @inputs);
4233 # Cannot output rules for shell variables.
4234 next if (substitute_ac_subst_variables $local) =~ /\$/;
4236 my $condstr = '';
4237 my $cond = $ac_config_files_condition{$lfile};
4238 if (defined $cond)
4239 {
4240 $condstr = $cond->subst_string;
4241 Automake::Rule::define ($local, $configure_ac, RULE_AUTOMAKE, $cond,
4242 $ac_config_files_location{$file});
4243 }
4244 $output_rules .= ($condstr . $local . ': '
4245 . '$(top_builddir)/config.status '
4246 . "@rewritten_inputs\n"
4247 . $condstr . "\t"
4248 . 'cd $(top_builddir) && '
4249 . '$(SHELL) ./config.status '
4250 . ($relative_dir eq '.' ? '' : '$(subdir)/')
4251 . '$@'
4252 . "\n");
4253 push (@actual_other_files, $local);
4254 }
4256 # For links we should clean destinations and distribute sources.
4257 foreach my $spec (@config_links)
4258 {
4259 my ($link, $file) = split /:/, $spec;
4260 # Some people do AC_CONFIG_LINKS($computed). We only handle
4261 # the DEST:SRC form.
4262 next unless $file;
4263 my $where = $ac_config_files_location{$link};
4265 # Skip destinations that contain shell variables.
4266 if ((substitute_ac_subst_variables $link) !~ /\$/)
4267 {
4268 # We skip links that aren't in this directory. However, if
4269 # the link's directory does not have a Makefile, and we are
4270 # currently doing '.', then we add the link to CONFIG_CLEAN_FILES
4271 # in '.'s Makefile.in.
4272 my $local = basename ($link);
4273 my $fd = dirname ($link);
4274 if ($fd ne $relative_dir)
4275 {
4276 if ($relative_dir eq '.' && ! &is_make_dir ($fd))
4277 {
4278 $local = $link;
4279 }
4280 else
4281 {
4282 $local = undef;
4283 }
4284 }
4285 if ($file ne $link)
4286 {
4287 push @actual_other_files, $local if $local;
4288 }
4289 else
4290 {
4291 push @actual_other_vpath_files, $local if $local;
4292 }
4293 }
4295 # Do not process sources that contain shell variables.
4296 if ((substitute_ac_subst_variables $file) !~ /\$/)
4297 {
4298 my $fd = dirname ($file);
4300 # We distribute files that are in this directory.
4301 # At the top-level ('.') we also distribute files whose
4302 # directory does not have a Makefile.
4303 if (($fd eq $relative_dir)
4304 || ($relative_dir eq '.' && ! &is_make_dir ($fd)))
4305 {
4306 # The following will distribute $file as a side-effect when
4307 # it is appropriate (i.e., when $file is not already an output).
4308 # We do not need the result, just the side-effect.
4309 rewrite_inputs_into_dependencies ($link, $file);
4310 }
4311 }
4312 }
4314 # These files get removed by "make distclean".
4315 define_pretty_variable ('CONFIG_CLEAN_FILES', TRUE, INTERNAL,
4316 @actual_other_files);
4317 define_pretty_variable ('CONFIG_CLEAN_VPATH_FILES', TRUE, INTERNAL,
4318 @actual_other_vpath_files);
4319 }
4321 # Handle C headers.
4322 sub handle_headers
4323 {
4324 my @r = &am_install_var ('-defaultdist', 'header', 'HEADERS', 'include',
4325 'oldinclude', 'pkginclude',
4326 'noinst', 'check');
4327 foreach (@r)
4328 {
4329 next unless $_->[1] =~ /\..*$/;
4330 &saw_extension ($&);
4331 }
4332 }
4334 sub handle_gettext
4335 {
4336 return if ! $seen_gettext || $relative_dir ne '.';
4338 my $subdirs = var 'SUBDIRS';
4340 if (! $subdirs)
4341 {
4342 err_ac "AM_GNU_GETTEXT used but SUBDIRS not defined";
4343 return;
4344 }
4346 # Perform some sanity checks to help users get the right setup.
4347 # We disable these tests when po/ doesn't exist in order not to disallow
4348 # unusual gettext setups.
4349 #
4350 # Bruno Haible:
4351 # | The idea is:
4352 # |
4353 # | 1) If a package doesn't have a directory po/ at top level, it
4354 # | will likely have multiple po/ directories in subpackages.
4355 # |
4356 # | 2) It is useful to warn for the absence of intl/ if AM_GNU_GETTEXT
4357 # | is used without 'external'. It is also useful to warn for the
4358 # | presence of intl/ if AM_GNU_GETTEXT([external]) is used. Both
4359 # | warnings apply only to the usual layout of packages, therefore
4360 # | they should both be disabled if no po/ directory is found at
4361 # | top level.
4363 if (-d 'po')
4364 {
4365 my @subdirs = $subdirs->value_as_list_recursive;
4367 msg_var ('syntax', $subdirs,
4368 "AM_GNU_GETTEXT used but 'po' not in SUBDIRS")
4369 if ! grep ($_ eq 'po', @subdirs);
4371 # intl/ is not required when AM_GNU_GETTEXT is called with the
4372 # 'external' option and AM_GNU_GETTEXT_INTL_SUBDIR is not called.
4373 msg_var ('syntax', $subdirs,
4374 "AM_GNU_GETTEXT used but 'intl' not in SUBDIRS")
4375 if (! ($seen_gettext_external && ! $seen_gettext_intl)
4376 && ! grep ($_ eq 'intl', @subdirs));
4378 # intl/ should not be used with AM_GNU_GETTEXT([external]), except
4379 # if AM_GNU_GETTEXT_INTL_SUBDIR is called.
4380 msg_var ('syntax', $subdirs,
4381 "'intl' should not be in SUBDIRS when "
4382 . "AM_GNU_GETTEXT([external]) is used")
4383 if ($seen_gettext_external && ! $seen_gettext_intl
4384 && grep ($_ eq 'intl', @subdirs));
4385 }
4387 require_file ($ac_gettext_location, GNU, 'ABOUT-NLS');
4388 }
4390 # Handle footer elements.
4391 sub handle_footer
4392 {
4393 reject_rule ('.SUFFIXES',
4394 "use variable 'SUFFIXES', not target '.SUFFIXES'");
4396 # Note: AIX 4.1 /bin/make will fail if any suffix rule appears
4397 # before .SUFFIXES. So we make sure that .SUFFIXES appears before
4398 # anything else, by sticking it right after the default: target.
4399 $output_header .= ".SUFFIXES:\n";
4400 my $suffixes = var 'SUFFIXES';
4401 my @suffixes = Automake::Rule::suffixes;
4402 if (@suffixes || $suffixes)
4403 {
4404 # Make sure SUFFIXES has unique elements. Sort them to ensure
4405 # the output remains consistent. However, $(SUFFIXES) is
4406 # always at the start of the list, unsorted. This is done
4407 # because make will choose rules depending on the ordering of
4408 # suffixes, and this lets the user have some control. Push
4409 # actual suffixes, and not $(SUFFIXES). Some versions of make
4410 # do not like variable substitutions on the .SUFFIXES line.
4411 my @user_suffixes = ($suffixes
4412 ? $suffixes->value_as_list_recursive : ());
4414 my %suffixes = map { $_ => 1 } @suffixes;
4415 delete @suffixes{@user_suffixes};
4417 $output_header .= (".SUFFIXES: "
4418 . join (' ', @user_suffixes, sort keys %suffixes)
4419 . "\n");
4420 }
4422 $output_trailer .= file_contents ('footer', new Automake::Location);
4423 }
4426 # Generate 'make install' rules.
4427 sub handle_install ()
4428 {
4429 $output_rules .= &file_contents
4430 ('install',
4431 new Automake::Location,
4432 maybe_BUILT_SOURCES => (set_seen ('BUILT_SOURCES')
4433 ? (" \$(BUILT_SOURCES)\n"
4434 . "\t\$(MAKE) \$(AM_MAKEFLAGS)")
4435 : ''),
4436 'installdirs-local' => (user_phony_rule 'installdirs-local'
4437 ? ' installdirs-local' : ''),
4438 am__installdirs => variable_value ('am__installdirs') || '');
4439 }
4442 # Deal with all and all-am.
4443 sub handle_all ($)
4444 {
4445 my ($makefile) = @_;
4447 # Output 'all-am'.
4449 # Put this at the beginning for the sake of non-GNU makes. This
4450 # is still wrong if these makes can run parallel jobs. But it is
4451 # right enough.
4452 unshift (@all, basename ($makefile));
4454 foreach my $spec (@config_headers)
4455 {
4456 my ($out, @ins) = split_config_file_spec ($spec);
4457 push (@all, basename ($out))
4458 if dirname ($out) eq $relative_dir;
4459 }
4461 # Install 'all' hooks.
4462 push (@all, "all-local")
4463 if user_phony_rule "all-local";
4465 &pretty_print_rule ("all-am:", "\t\t", @all);
4466 &depend ('.PHONY', 'all-am', 'all');
4469 # Output 'all'.
4471 my @local_headers = ();
4472 push @local_headers, '$(BUILT_SOURCES)'
4473 if var ('BUILT_SOURCES');
4474 foreach my $spec (@config_headers)
4475 {
4476 my ($out, @ins) = split_config_file_spec ($spec);
4477 push @local_headers, basename ($out)
4478 if dirname ($out) eq $relative_dir;
4479 }
4481 if (@local_headers)
4482 {
4483 # We need to make sure config.h is built before we recurse.
4484 # We also want to make sure that built sources are built
4485 # before any ordinary 'all' targets are run. We can't do this
4486 # by changing the order of dependencies to the "all" because
4487 # that breaks when using parallel makes. Instead we handle
4488 # things explicitly.
4489 $output_all .= ("all: @local_headers"
4490 . "\n\t"
4491 . '$(MAKE) $(AM_MAKEFLAGS) '
4492 . (var ('SUBDIRS') ? 'all-recursive' : 'all-am')
4493 . "\n\n");
4494 depend ('.MAKE', 'all');
4495 }
4496 else
4497 {
4498 $output_all .= "all: " . (var ('SUBDIRS')
4499 ? 'all-recursive' : 'all-am') . "\n\n";
4500 }
4501 }
4503 # Generate helper targets for user recursion, where needed.
4504 sub handle_user_recursion ()
4505 {
4506 return unless @extra_recursive_targets;
4508 define_pretty_variable ('am__extra_recursive_targets', TRUE, INTERNAL,
4509 map { "$_-recursive" } @extra_recursive_targets);
4510 my $aux = var ('SUBDIRS') ? 'recursive' : 'am';
4511 foreach my $target (@extra_recursive_targets)
4512 {
4513 # This allows the default target's rules to be overridden in
4514 # Makefile.am.
4515 user_phony_rule ($target);
4516 depend ("$target", "$target-$aux");
4517 depend ("$target-am", "$target-local");
4518 # Every user-defined recursive target 'foo' *must* have a valid
4519 # associated 'foo-local' rule; we define it as an empty rule by
4520 # default, so that the user can transparently extend it in his
4521 # own Makefile.am.
4522 pretty_print_rule ("$target-local:");
4523 # $target-recursive might as well be undefined, so do not add
4524 # it here; it's taken care of in subdirs.am anyway.
4525 depend (".PHONY", "$target-am", "$target-local");
4526 }
4527 }
4530 # &do_check_merge_target ()
4531 # -------------------------
4532 # Handle check merge target specially.
4533 sub do_check_merge_target ()
4534 {
4535 # Include user-defined local form of target.
4536 push @check_tests, 'check-local'
4537 if user_phony_rule 'check-local';
4539 # The check target must depend on the local equivalent of
4540 # 'all', to ensure all the primary targets are built. Then it
4541 # must build the local check rules.
4542 $output_rules .= "check-am: all-am\n";
4543 if (@check)
4544 {
4545 pretty_print_rule ("\t\$(MAKE) \$(AM_MAKEFLAGS)", "\t ", @check);
4546 depend ('.MAKE', 'check-am');
4547 }
4549 if (@check_tests)
4550 {
4551 pretty_print_rule ("\t\$(MAKE) \$(AM_MAKEFLAGS)", "\t ",
4552 @check_tests);
4553 depend ('.MAKE', 'check-am');
4554 }
4556 depend '.PHONY', 'check', 'check-am';
4557 # Handle recursion. We have to honor BUILT_SOURCES like for 'all:'.
4558 $output_rules .= ("check: "
4559 . (var ('BUILT_SOURCES')
4560 ? "\$(BUILT_SOURCES)\n\t\$(MAKE) \$(AM_MAKEFLAGS) "
4561 : '')
4562 . (var ('SUBDIRS') ? 'check-recursive' : 'check-am')
4563 . "\n");
4564 depend ('.MAKE', 'check')
4565 if var ('BUILT_SOURCES');
4566 }
4568 # handle_clean ($MAKEFILE)
4569 # ------------------------
4570 # Handle all 'clean' targets.
4571 sub handle_clean ($)
4572 {
4573 my ($makefile) = @_;
4575 # Clean the files listed in user variables if they exist.
4576 $clean_files{'$(MOSTLYCLEANFILES)'} = MOSTLY_CLEAN
4577 if var ('MOSTLYCLEANFILES');
4578 $clean_files{'$(CLEANFILES)'} = CLEAN
4579 if var ('CLEANFILES');
4580 $clean_files{'$(DISTCLEANFILES)'} = DIST_CLEAN
4581 if var ('DISTCLEANFILES');
4582 $clean_files{'$(MAINTAINERCLEANFILES)'} = MAINTAINER_CLEAN
4583 if var ('MAINTAINERCLEANFILES');
4585 # Built sources are automatically removed by maintainer-clean.
4586 $clean_files{'$(BUILT_SOURCES)'} = MAINTAINER_CLEAN
4587 if var ('BUILT_SOURCES');
4589 # Compute a list of "rm"s to run for each target.
4590 my %rms = (MOSTLY_CLEAN, [],
4591 CLEAN, [],
4592 DIST_CLEAN, [],
4593 MAINTAINER_CLEAN, []);
4595 foreach my $file (keys %clean_files)
4596 {
4597 my $when = $clean_files{$file};
4598 prog_error 'invalid entry in %clean_files'
4599 unless exists $rms{$when};
4601 my $rm = "rm -f $file";
4602 # If file is a variable, make sure when don't call 'rm -f' without args.
4603 $rm ="test -z \"$file\" || $rm"
4604 if ($file =~ /^\s*\$(\(.*\)|\{.*\})\s*$/);
4606 push @{$rms{$when}}, "\t-$rm\n";
4607 }
4609 $output_rules .= &file_contents
4610 ('clean',
4611 new Automake::Location,
4612 MOSTLYCLEAN_RMS => join ('', sort @{$rms{&MOSTLY_CLEAN}}),
4613 CLEAN_RMS => join ('', sort @{$rms{&CLEAN}}),
4614 DISTCLEAN_RMS => join ('', sort @{$rms{&DIST_CLEAN}}),
4615 MAINTAINER_CLEAN_RMS => join ('', sort @{$rms{&MAINTAINER_CLEAN}}),
4616 MAKEFILE => basename $makefile,
4617 );
4618 }
4621 # &target_cmp ($A, $B)
4622 # --------------------
4623 # Subroutine for &handle_factored_dependencies to let '.PHONY' and
4624 # other '.TARGETS' be last.
4625 sub target_cmp
4626 {
4627 return 0 if $a eq $b;
4629 my $a1 = substr ($a, 0, 1);
4630 my $b1 = substr ($b, 0, 1);
4631 if ($a1 ne $b1)
4632 {
4633 return -1 if $b1 eq '.';
4634 return 1 if $a1 eq '.';
4635 }
4636 return $a cmp $b;
4637 }
4640 # &handle_factored_dependencies ()
4641 # --------------------------------
4642 # Handle everything related to gathered targets.
4643 sub handle_factored_dependencies
4644 {
4645 # Reject bad hooks.
4646 foreach my $utarg ('uninstall-data-local', 'uninstall-data-hook',
4647 'uninstall-exec-local', 'uninstall-exec-hook',
4648 'uninstall-dvi-local',
4649 'uninstall-html-local',
4650 'uninstall-info-local',
4651 'uninstall-pdf-local',
4652 'uninstall-ps-local')
4653 {
4654 my $x = $utarg;
4655 $x =~ s/-.*-/-/;
4656 reject_rule ($utarg, "use '$x', not '$utarg'");
4657 }
4659 reject_rule ('install-local',
4660 "use 'install-data-local' or 'install-exec-local', "
4661 . "not 'install-local'");
4663 reject_rule ('install-hook',
4664 "use 'install-data-hook' or 'install-exec-hook', "
4665 . "not 'install-hook'");
4667 # Install the -local hooks.
4668 foreach (keys %dependencies)
4669 {
4670 # Hooks are installed on the -am targets.
4671 s/-am$// or next;
4672 depend ("$_-am", "$_-local")
4673 if user_phony_rule "$_-local";
4674 }
4676 # Install the -hook hooks.
4677 # FIXME: Why not be as liberal as we are with -local hooks?
4678 foreach ('install-exec', 'install-data', 'uninstall')
4679 {
4680 if (user_phony_rule "$_-hook")
4681 {
4682 depend ('.MAKE', "$_-am");
4683 register_action("$_-am",
4684 ("\t\@\$(NORMAL_INSTALL)\n"
4685 . "\t\$(MAKE) \$(AM_MAKEFLAGS) $_-hook"));
4686 }
4687 }
4689 # All the required targets are phony.
4690 depend ('.PHONY', keys %required_targets);
4692 # Actually output gathered targets.
4693 foreach (sort target_cmp keys %dependencies)
4694 {
4695 # If there is nothing about this guy, skip it.
4696 next
4697 unless (@{$dependencies{$_}}
4698 || $actions{$_}
4699 || $required_targets{$_});
4701 # Define gathered targets in undefined conditions.
4702 # FIXME: Right now we must handle .PHONY as an exception,
4703 # because people write things like
4704 # .PHONY: myphonytarget
4705 # to append dependencies. This would not work if Automake
4706 # refrained from defining its own .PHONY target as it does
4707 # with other overridden targets.
4708 # Likewise for '.MAKE'.
4709 my @undefined_conds = (TRUE,);
4710 if ($_ ne '.PHONY' && $_ ne '.MAKE')
4711 {
4712 @undefined_conds =
4713 Automake::Rule::define ($_, 'internal',
4714 RULE_AUTOMAKE, TRUE, INTERNAL);
4715 }
4716 my @uniq_deps = uniq (sort @{$dependencies{$_}});
4717 foreach my $cond (@undefined_conds)
4718 {
4719 my $condstr = $cond->subst_string;
4720 &pretty_print_rule ("$condstr$_:", "$condstr\t", @uniq_deps);
4721 $output_rules .= $actions{$_} if defined $actions{$_};
4722 $output_rules .= "\n";
4723 }
4724 }
4725 }
4728 # &handle_tests_dejagnu ()
4729 # ------------------------
4730 sub handle_tests_dejagnu
4731 {
4732 push (@check_tests, 'check-DEJAGNU');
4733 $output_rules .= file_contents ('dejagnu', new Automake::Location);
4734 }
4736 sub handle_per_suffix_test
4737 {
4738 my ($test_suffix, %transform) = @_;
4739 my ($pfx, $generic, $am_exeext);
4740 if ($test_suffix eq '')
4741 {
4742 $pfx = '';
4743 $generic = 0;
4744 $am_exeext = 'FALSE';
4745 }
4746 else
4747 {
4748 prog_error ("test suffix '$test_suffix' lacks leading dot")
4749 unless $test_suffix =~ m/^\.(.*)/;
4750 $pfx = uc ($1) . '_';
4751 $generic = 1;
4752 $am_exeext = exists $configure_vars{'EXEEXT'} ? 'am__EXEEXT'
4753 : 'FALSE';
4754 }
4755 # The "test driver" program, deputed to handle tests protocol used by
4756 # test scripts. By default, it's assumed that no protocol is used, so
4757 # we fall back to the old behaviour, implemented by the 'test-driver'
4758 # auxiliary script.
4759 if (! var "${pfx}LOG_DRIVER")
4760 {
4761 require_conf_file ("parallel-tests", FOREIGN, 'test-driver');
4762 define_variable ("${pfx}LOG_DRIVER",
4763 "\$(SHELL) $am_config_aux_dir/test-driver",
4764 INTERNAL);
4765 }
4766 my $driver = '$(' . $pfx . 'LOG_DRIVER)';
4767 my $driver_flags = '$(AM_' . $pfx . 'LOG_DRIVER_FLAGS)'
4768 . ' $(' . $pfx . 'LOG_DRIVER_FLAGS)';
4769 my $compile = "${pfx}LOG_COMPILE";
4770 define_variable ($compile,
4771 '$(' . $pfx . 'LOG_COMPILER)'
4772 . ' $(AM_' . $pfx . 'LOG_FLAGS)'
4773 . ' $(' . $pfx . 'LOG_FLAGS)',
4774 INTERNAL);
4775 $output_rules .= file_contents ('check2', new Automake::Location,
4776 GENERIC => $generic,
4777 DRIVER => $driver,
4778 DRIVER_FLAGS => $driver_flags,
4779 COMPILE => '$(' . $compile . ')',
4780 EXT => $test_suffix,
4781 am__EXEEXT => $am_exeext,
4782 %transform);
4783 }
4785 # is_valid_test_extension ($EXT)
4786 # ------------------------------
4787 # Return true if $EXT can appear in $(TEST_EXTENSIONS), return false
4788 # otherwise.
4789 sub is_valid_test_extension ($)
4790 {
4791 my $ext = shift;
4792 return 1
4793 if ($ext =~ /^\.[a-zA-Z_][a-zA-Z0-9_]*$/);
4794 return 1
4795 if (exists $configure_vars{'EXEEXT'} && $ext eq subst ('EXEEXT'));
4796 return 0;
4797 }
4799 # Handle TESTS variable and other checks.
4800 sub handle_tests
4801 {
4802 if (option 'dejagnu')
4803 {
4804 &handle_tests_dejagnu;
4805 }
4806 else
4807 {
4808 foreach my $c ('DEJATOOL', 'RUNTEST', 'RUNTESTFLAGS')
4809 {
4810 reject_var ($c, "'$c' defined but 'dejagnu' not in "
4811 . "'AUTOMAKE_OPTIONS'");
4812 }
4813 }
4815 if (var ('TESTS'))
4816 {
4817 push (@check_tests, 'check-TESTS');
4818 my $check_deps = "@check";
4819 $output_rules .= &file_contents ('check', new Automake::Location,
4820 SERIAL_TESTS => !! option 'serial-tests',
4821 CHECK_DEPS => $check_deps);
4823 # Tests that are known programs should have $(EXEEXT) appended.
4824 # For matching purposes, we need to adjust XFAIL_TESTS as well.
4825 append_exeext { exists $known_programs{$_[0]} } 'TESTS';
4826 append_exeext { exists $known_programs{$_[0]} } 'XFAIL_TESTS'
4827 if (var ('XFAIL_TESTS'));
4829 if (! option 'serial-tests')
4830 {
4831 define_variable ('TEST_SUITE_LOG', 'test-suite.log', INTERNAL);
4832 my $suff = '.test';
4833 my $at_exeext = '';
4834 my $handle_exeext = exists $configure_vars{'EXEEXT'};
4835 if ($handle_exeext)
4836 {
4837 $at_exeext = subst ('EXEEXT');
4838 $suff = $at_exeext . ' ' . $suff;
4839 }
4840 if (! var 'TEST_EXTENSIONS')
4841 {
4842 define_variable ('TEST_EXTENSIONS', $suff, INTERNAL);
4843 }
4844 my $var = var 'TEST_EXTENSIONS';
4845 # Currently, we are not able to deal with conditional contents
4846 # in TEST_EXTENSIONS.
4847 if ($var->has_conditional_contents)
4848 {
4849 msg_var 'unsupported', $var,
4850 "'TEST_EXTENSIONS' cannot have conditional contents";
4851 }
4852 my @test_suffixes = $var->value_as_list_recursive;
4853 if ((my @invalid_test_suffixes =
4854 grep { !is_valid_test_extension $_ } @test_suffixes) > 0)
4855 {
4856 error $var->rdef (TRUE)->location,
4857 "invalid test extensions: @invalid_test_suffixes";
4858 }
4859 @test_suffixes = grep { is_valid_test_extension $_ } @test_suffixes;
4860 if ($handle_exeext)
4861 {
4862 unshift (@test_suffixes, $at_exeext)
4863 unless $test_suffixes[0] eq $at_exeext;
4864 }
4865 unshift (@test_suffixes, '');
4867 transform_variable_recursively
4868 ('TESTS', 'TEST_LOGS', 'am__testlogs', 1, INTERNAL,
4869 sub {
4870 my ($subvar, $val, $cond, $full_cond) = @_;
4871 my $obj = $val;
4872 return $obj
4873 if $val =~ /^\@.*\@$/;
4874 $obj =~ s/\$\(EXEEXT\)$//o;
4876 if ($val =~ /(\$\((top_)?srcdir\))\//o)
4877 {
4878 msg ('error', $subvar->rdef ($cond)->location,
4879 "using '$1' in TESTS is currently broken: '$val'");
4880 }
4882 foreach my $test_suffix (@test_suffixes)
4883 {
4884 next
4885 if $test_suffix eq $at_exeext || $test_suffix eq '';
4886 return substr ($obj, 0, length ($obj) - length ($test_suffix)) . '.log'
4887 if substr ($obj, - length ($test_suffix)) eq $test_suffix;
4888 }
4889 my $base = $obj;
4890 $obj .= '.log';
4891 handle_per_suffix_test ('',
4892 OBJ => $obj,
4893 BASE => $base,
4894 SOURCE => $val);
4895 return $obj;
4896 });
4898 my $nhelper=1;
4899 my $prev = 'TESTS';
4900 my $post = '';
4901 my $last_suffix = $test_suffixes[$#test_suffixes];
4902 my $cur = '';
4903 foreach my $test_suffix (@test_suffixes)
4904 {
4905 if ($test_suffix eq $last_suffix)
4906 {
4907 $cur = 'TEST_LOGS';
4908 }
4909 else
4910 {
4911 $cur = 'am__test_logs' . $nhelper;
4912 }
4913 define_variable ($cur,
4914 '$(' . $prev . ':' . $test_suffix . $post . '=.log)', INTERNAL);
4915 $post = '.log';
4916 $prev = $cur;
4917 $nhelper++;
4918 if ($test_suffix ne $at_exeext && $test_suffix ne '')
4919 {
4920 handle_per_suffix_test ($test_suffix,
4921 OBJ => '',
4922 BASE => '$*',
4923 SOURCE => '$<');
4924 }
4925 }
4926 $clean_files{'$(TEST_LOGS)'} = MOSTLY_CLEAN;
4927 $clean_files{'$(TEST_LOGS:.log=.trs)'} = MOSTLY_CLEAN;
4928 $clean_files{'$(TEST_SUITE_LOG)'} = MOSTLY_CLEAN;
4929 }
4930 }
4931 }
4933 # Handle Emacs Lisp.
4934 sub handle_emacs_lisp
4935 {
4936 my @elfiles = &am_install_var ('-candist', 'lisp', 'LISP',
4937 'lisp', 'noinst');
4939 return if ! @elfiles;
4941 define_pretty_variable ('am__ELFILES', TRUE, INTERNAL,
4942 map { $_->[1] } @elfiles);
4943 define_pretty_variable ('am__ELCFILES', TRUE, INTERNAL,
4944 '$(am__ELFILES:.el=.elc)');
4945 # This one can be overridden by users.
4946 define_pretty_variable ('ELCFILES', TRUE, INTERNAL, '$(LISP:.el=.elc)');
4948 push @all, '$(ELCFILES)';
4950 require_variables ($elfiles[0][0], "Emacs Lisp sources seen", TRUE,
4951 'EMACS', 'lispdir');
4952 }
4954 # Handle Python
4955 sub handle_python
4956 {
4957 my @pyfiles = &am_install_var ('-defaultdist', 'python', 'PYTHON',
4958 'noinst');
4959 return if ! @pyfiles;
4961 require_variables ($pyfiles[0][0], "Python sources seen", TRUE, 'PYTHON');
4962 require_conf_file ($pyfiles[0][0], FOREIGN, 'py-compile');
4963 &define_variable ('py_compile', "$am_config_aux_dir/py-compile", INTERNAL);
4964 }
4966 # Handle Java.
4967 sub handle_java
4968 {
4969 my @sourcelist = &am_install_var ('-candist',
4970 'java', 'JAVA',
4971 'noinst', 'check');
4972 return if ! @sourcelist;
4974 my @prefixes = am_primary_prefixes ('JAVA', 1,
4975 'noinst', 'check');
4977 my $dir;
4978 my @java_sources = ();
4979 foreach my $prefix (@prefixes)
4980 {
4981 (my $curs = $prefix) =~ s/^(?:nobase_)?(?:dist_|nodist_)?//;
4983 next
4984 if $curs eq 'EXTRA';
4986 push @java_sources, '$(' . $prefix . '_JAVA' . ')';
4988 if (defined $dir)
4989 {
4990 err_var "${curs}_JAVA", "multiple _JAVA primaries in use"
4991 unless $curs eq $dir;
4992 }
4994 $dir = $curs;
4995 }
4997 define_pretty_variable ('am__java_sources', TRUE, INTERNAL,
4998 "@java_sources");
5000 if ($dir eq 'check')
5001 {
5002 push (@check, "class$dir.stamp");
5003 }
5004 else
5005 {
5006 push (@all, "class$dir.stamp");
5007 }
5008 }
5011 # Handle some of the minor options.
5012 sub handle_minor_options
5013 {
5014 if (option 'readme-alpha')
5015 {
5016 if ($relative_dir eq '.')
5017 {
5018 if ($package_version !~ /^$GNITS_VERSION_PATTERN$/)
5019 {
5020 msg ('error-gnits', $package_version_location,
5021 "version '$package_version' doesn't follow " .
5022 "Gnits standards");
5023 }
5024 if (defined $1 && -f 'README-alpha')
5025 {
5026 # This means we have an alpha release. See
5027 # GNITS_VERSION_PATTERN for details.
5028 push_dist_common ('README-alpha');
5029 }
5030 }
5031 }
5032 }
5034 ################################################################
5036 # ($OUTPUT, @INPUTS)
5037 # &split_config_file_spec ($SPEC)
5038 # -------------------------------
5039 # Decode the Autoconf syntax for config files (files, headers, links
5040 # etc.).
5041 sub split_config_file_spec ($)
5042 {
5043 my ($spec) = @_;
5044 my ($output, @inputs) = split (/:/, $spec);
5046 push @inputs, "$output.in"
5047 unless @inputs;
5049 return ($output, @inputs);
5050 }
5052 # $input
5053 # locate_am (@POSSIBLE_SOURCES)
5054 # -----------------------------
5055 # AC_CONFIG_FILES allow specifications such as Makefile:top.in:mid.in:bot.in
5056 # This functions returns the first *.in file for which a *.am exists.
5057 # It returns undef otherwise.
5058 sub locate_am (@)
5059 {
5060 my (@rest) = @_;
5061 my $input;
5062 foreach my $file (@rest)
5063 {
5064 if (($file =~ /^(.*)\.in$/) && -f "$1.am")
5065 {
5066 $input = $file;
5067 last;
5068 }
5069 }
5070 return $input;
5071 }
5073 my %make_list;
5075 # &scan_autoconf_config_files ($WHERE, $CONFIG-FILES)
5076 # ---------------------------------------------------
5077 # Study $CONFIG-FILES which is the first argument to AC_CONFIG_FILES
5078 # (or AC_OUTPUT).
5079 sub scan_autoconf_config_files ($$)
5080 {
5081 my ($where, $config_files) = @_;
5083 # Look at potential Makefile.am's.
5084 foreach (split ' ', $config_files)
5085 {
5086 # Must skip empty string for Perl 4.
5087 next if $_ eq "\\" || $_ eq '';
5089 # Handle $local:$input syntax.
5090 my ($local, @rest) = split (/:/);
5091 @rest = ("$local.in",) unless @rest;
5092 # Keep in sync with 'conffile-leading-dot.test'.
5093 msg ('unsupported', $where,
5094 "omit leading './' from config file names such as '$local';"
5095 . "\nremake rules might be subtly broken otherwise")
5096 if ($local =~ /^\.\//);
5097 my $input = locate_am @rest;
5098 if ($input)
5099 {
5100 # We have a file that automake should generate.
5101 $make_list{$input} = join (':', ($local, @rest));
5102 }
5103 else
5104 {
5105 # We have a file that automake should cause to be
5106 # rebuilt, but shouldn't generate itself.
5107 push (@other_input_files, $_);
5108 }
5109 $ac_config_files_location{$local} = $where;
5110 $ac_config_files_condition{$local} =
5111 new Automake::Condition (@cond_stack)
5112 if (@cond_stack);
5113 }
5114 }
5117 # &scan_autoconf_traces ($FILENAME)
5118 # ---------------------------------
5119 sub scan_autoconf_traces ($)
5120 {
5121 my ($filename) = @_;
5123 # Macros to trace, with their minimal number of arguments.
5124 #
5125 # IMPORTANT: If you add a macro here, you should also add this macro
5126 # ========= to Automake-preselection in autoconf/lib/autom4te.in.
5127 my %traced = (
5128 AC_CANONICAL_BUILD => 0,
5129 AC_CANONICAL_HOST => 0,
5130 AC_CANONICAL_TARGET => 0,
5131 AC_CONFIG_AUX_DIR => 1,
5132 AC_CONFIG_FILES => 1,
5133 AC_CONFIG_HEADERS => 1,
5134 AC_CONFIG_LIBOBJ_DIR => 1,
5135 AC_CONFIG_LINKS => 1,
5136 AC_FC_SRCEXT => 1,
5137 AC_INIT => 0,
5138 AC_LIBSOURCE => 1,
5139 AC_REQUIRE_AUX_FILE => 1,
5140 AC_SUBST_TRACE => 1,
5141 AM_AUTOMAKE_VERSION => 1,
5142 AM_PROG_MKDIR_P => 0, # FIXME: to be removed in 1.14
5143 AM_CONDITIONAL => 2,
5144 AM_EXTRA_RECURSIVE_TARGETS => 1,
5145 AM_GNU_GETTEXT => 0,
5146 AM_GNU_GETTEXT_INTL_SUBDIR => 0,
5147 AM_INIT_AUTOMAKE => 0,
5148 AM_MAINTAINER_MODE => 0,
5149 AM_PROG_AR => 0,
5150 AM_PROG_CC_C_O => 0,
5151 _AM_SUBST_NOTMAKE => 1,
5152 _AM_COND_IF => 1,
5153 _AM_COND_ELSE => 1,
5154 _AM_COND_ENDIF => 1,
5155 LT_SUPPORTED_TAG => 1,
5156 _LT_AC_TAGCONFIG => 0,
5157 m4_include => 1,
5158 m4_sinclude => 1,
5159 sinclude => 1,
5160 );
5162 my $traces = ($ENV{AUTOCONF} || '@am_AUTOCONF@') . " ";
5164 # Use a separator unlikely to be used, not ':', the default, which
5165 # has a precise meaning for AC_CONFIG_FILES and so on.
5166 $traces .= join (' ',
5167 map { "--trace=$_" . ':\$f:\$l::\$d::\$n::\${::}%' }
5168 (keys %traced));
5170 my $tracefh = new Automake::XFile ("$traces $filename |");
5171 verb "reading $traces";
5173 @cond_stack = ();
5174 my $where;
5176 while ($_ = $tracefh->getline)
5177 {
5178 chomp;
5179 my ($here, $depth, @args) = split (/::/);
5180 $where = new Automake::Location $here;
5181 my $macro = $args[0];
5183 prog_error ("unrequested trace '$macro'")
5184 unless exists $traced{$macro};
5186 # Skip and diagnose malformed calls.
5187 if ($#args < $traced{$macro})
5188 {
5189 msg ('syntax', $where, "not enough arguments for $macro");
5190 next;
5191 }
5193 # Alphabetical ordering please.
5194 if ($macro eq 'AC_CANONICAL_BUILD')
5195 {
5196 if ($seen_canonical <= AC_CANONICAL_BUILD)
5197 {
5198 $seen_canonical = AC_CANONICAL_BUILD;
5199 }
5200 }
5201 elsif ($macro eq 'AC_CANONICAL_HOST')
5202 {
5203 if ($seen_canonical <= AC_CANONICAL_HOST)
5204 {
5205 $seen_canonical = AC_CANONICAL_HOST;
5206 }
5207 }
5208 elsif ($macro eq 'AC_CANONICAL_TARGET')
5209 {
5210 $seen_canonical = AC_CANONICAL_TARGET;
5211 }
5212 elsif ($macro eq 'AC_CONFIG_AUX_DIR')
5213 {
5214 if ($seen_init_automake)
5215 {
5216 error ($where, "AC_CONFIG_AUX_DIR must be called before "
5217 . "AM_INIT_AUTOMAKE ...", partial => 1);
5218 error ($seen_init_automake, "... AM_INIT_AUTOMAKE called here");
5219 }
5220 $config_aux_dir = $args[1];
5221 $config_aux_dir_set_in_configure_ac = 1;
5222 check_directory ($config_aux_dir, $where);
5223 }
5224 elsif ($macro eq 'AC_CONFIG_FILES')
5225 {
5226 # Look at potential Makefile.am's.
5227 scan_autoconf_config_files ($where, $args[1]);
5228 }
5229 elsif ($macro eq 'AC_CONFIG_HEADERS')
5230 {
5231 foreach my $spec (split (' ', $args[1]))
5232 {
5233 my ($dest, @src) = split (':', $spec);
5234 $ac_config_files_location{$dest} = $where;
5235 push @config_headers, $spec;
5236 }
5237 }
5238 elsif ($macro eq 'AC_CONFIG_LIBOBJ_DIR')
5239 {
5240 $config_libobj_dir = $args[1];
5241 check_directory ($config_libobj_dir, $where);
5242 }
5243 elsif ($macro eq 'AC_CONFIG_LINKS')
5244 {
5245 foreach my $spec (split (' ', $args[1]))
5246 {
5247 my ($dest, $src) = split (':', $spec);
5248 $ac_config_files_location{$dest} = $where;
5249 push @config_links, $spec;
5250 }
5251 }
5252 elsif ($macro eq 'AC_FC_SRCEXT')
5253 {
5254 my $suffix = $args[1];
5255 # These flags are used as %SOURCEFLAG% in depend2.am,
5256 # where the trailing space is important.
5257 $sourceflags{'.' . $suffix} = '$(FCFLAGS_' . $suffix . ') '
5258 if ($suffix eq 'f90' || $suffix eq 'f95' || $suffix eq 'f03' || $suffix eq 'f08');
5259 }
5260 elsif ($macro eq 'AC_INIT')
5261 {
5262 if (defined $args[2])
5263 {
5264 $package_version = $args[2];
5265 $package_version_location = $where;
5266 }
5267 }
5268 elsif ($macro eq 'AC_LIBSOURCE')
5269 {
5270 $libsources{$args[1]} = $here;
5271 }
5272 elsif ($macro eq 'AC_REQUIRE_AUX_FILE')
5273 {
5274 # Only remember the first time a file is required.
5275 $required_aux_file{$args[1]} = $where
5276 unless exists $required_aux_file{$args[1]};
5277 }
5278 elsif ($macro eq 'AC_SUBST_TRACE')
5279 {
5280 # Just check for alphanumeric in AC_SUBST_TRACE. If you do
5281 # AC_SUBST(5), then too bad.
5282 $configure_vars{$args[1]} = $where
5283 if $args[1] =~ /^\w+$/;
5284 }
5285 elsif ($macro eq 'AM_AUTOMAKE_VERSION')
5286 {
5287 error ($where,
5288 "version mismatch. This is Automake $VERSION,\n" .
5289 "but the definition used by this AM_INIT_AUTOMAKE\n" .
5290 "comes from Automake $args[1]. You should recreate\n" .
5291 "aclocal.m4 with aclocal and run automake again.\n",
5292 # $? = 63 is used to indicate version mismatch to missing.
5293 exit_code => 63)
5294 if $VERSION ne $args[1];
5296 $seen_automake_version = 1;
5297 }
5298 elsif ($macro eq 'AM_PROG_MKDIR_P') # FIXME: to be removed in 1.14
5299 {
5300 msg 'obsolete', $where, <<'EOF';
5301 The 'AM_PROG_MKDIR_P' macro is deprecated, and will soon be removed.
5302 You should use the Autoconf-provided 'AC_PROG_MKDIR_P' macro instead,
5303 and use '$(MKDIR_P)' instead of '$(mkdir_p)'in your Makefile.am files.
5304 EOF
5305 }
5306 elsif ($macro eq 'AM_CONDITIONAL')
5307 {
5308 $configure_cond{$args[1]} = $where;
5309 }
5310 elsif ($macro eq 'AM_EXTRA_RECURSIVE_TARGETS')
5311 {
5312 # Empty leading/trailing fields might be produced by split,
5313 # hence the grep is really needed.
5314 push @extra_recursive_targets,
5315 grep (/./, (split /\s+/, $args[1]));
5316 }
5317 elsif ($macro eq 'AM_GNU_GETTEXT')
5318 {
5319 $seen_gettext = $where;
5320 $ac_gettext_location = $where;
5321 $seen_gettext_external = grep ($_ eq 'external', @args);
5322 }
5323 elsif ($macro eq 'AM_GNU_GETTEXT_INTL_SUBDIR')
5324 {
5325 $seen_gettext_intl = $where;
5326 }
5327 elsif ($macro eq 'AM_INIT_AUTOMAKE')
5328 {
5329 $seen_init_automake = $where;
5330 if (defined $args[2])
5331 {
5332 msg 'obsolete', $where, <<'EOF';
5333 AM_INIT_AUTOMAKE: two- and three-arguments forms are deprecated. For more info, see:
5334 http://www.gnu.org/software/automake/manual/automake.html#Modernize-AM_INIT_AUTOMAKE-invocation
5335 EOF
5336 $package_version = $args[2];
5337 $package_version_location = $where;
5338 }
5339 elsif (defined $args[1])
5340 {
5341 my @opts = split (' ', $args[1]);
5342 @opts = map { { option => $_, where => $where } } @opts;
5343 exit $exit_code if process_global_option_list (@opts);
5344 }
5345 }
5346 elsif ($macro eq 'AM_MAINTAINER_MODE')
5347 {
5348 $seen_maint_mode = $where;
5349 }
5350 elsif ($macro eq 'AM_PROG_AR')
5351 {
5352 $seen_ar = $where;
5353 }
5354 elsif ($macro eq 'AM_PROG_CC_C_O')
5355 {
5356 $seen_cc_c_o = $where;
5357 }
5358 elsif ($macro eq '_AM_COND_IF')
5359 {
5360 cond_stack_if ('', $args[1], $where);
5361 error ($where, "missing m4 quoting, macro depth $depth")
5362 if ($depth != 1);
5363 }
5364 elsif ($macro eq '_AM_COND_ELSE')
5365 {
5366 cond_stack_else ('!', $args[1], $where);
5367 error ($where, "missing m4 quoting, macro depth $depth")
5368 if ($depth != 1);
5369 }
5370 elsif ($macro eq '_AM_COND_ENDIF')
5371 {
5372 cond_stack_endif (undef, undef, $where);
5373 error ($where, "missing m4 quoting, macro depth $depth")
5374 if ($depth != 1);
5375 }
5376 elsif ($macro eq '_AM_SUBST_NOTMAKE')
5377 {
5378 $ignored_configure_vars{$args[1]} = $where;
5379 }
5380 elsif ($macro eq 'm4_include'
5381 || $macro eq 'm4_sinclude'
5382 || $macro eq 'sinclude')
5383 {
5384 # Skip missing 'sinclude'd files.
5385 next if $macro ne 'm4_include' && ! -f $args[1];
5387 # Some modified versions of Autoconf don't use
5388 # frozen files. Consequently it's possible that we see all
5389 # m4_include's performed during Autoconf's startup.
5390 # Obviously we don't want to distribute Autoconf's files
5391 # so we skip absolute filenames here.
5392 push @configure_deps, '$(top_srcdir)/' . $args[1]
5393 unless $here =~ m,^(?:\w:)?[\\/],;
5394 # Keep track of the greatest timestamp.
5395 if (-e $args[1])
5396 {
5397 my $mtime = mtime $args[1];
5398 $configure_deps_greatest_timestamp = $mtime
5399 if $mtime > $configure_deps_greatest_timestamp;
5400 }
5401 }
5402 elsif ($macro eq 'LT_SUPPORTED_TAG')
5403 {
5404 $libtool_tags{$args[1]} = 1;
5405 $libtool_new_api = 1;
5406 }
5407 elsif ($macro eq '_LT_AC_TAGCONFIG')
5408 {
5409 # _LT_AC_TAGCONFIG is an old macro present in Libtool 1.5.
5410 # We use it to detect whether tags are supported. Our
5411 # preferred interface is LT_SUPPORTED_TAG, but it was
5412 # introduced in Libtool 1.6.
5413 if (0 == keys %libtool_tags)
5414 {
5415 # Hardcode the tags supported by Libtool 1.5.
5416 %libtool_tags = (CC => 1, CXX => 1, GCJ => 1, F77 => 1);
5417 }
5418 }
5419 }
5421 error ($where, "condition stack not properly closed")
5422 if (@cond_stack);
5424 $tracefh->close;
5425 }
5428 # &scan_autoconf_files ()
5429 # -----------------------
5430 # Check whether we use 'configure.ac' or 'configure.in'.
5431 # Scan it (and possibly 'aclocal.m4') for interesting things.
5432 # We must scan aclocal.m4 because there might be AC_SUBSTs and such there.
5433 sub scan_autoconf_files ()
5434 {
5435 # Reinitialize libsources here. This isn't really necessary,
5436 # since we currently assume there is only one configure.ac. But
5437 # that won't always be the case.
5438 %libsources = ();
5440 # Keep track of the youngest configure dependency.
5441 $configure_deps_greatest_timestamp = mtime $configure_ac;
5442 if (-e 'aclocal.m4')
5443 {
5444 my $mtime = mtime 'aclocal.m4';
5445 $configure_deps_greatest_timestamp = $mtime
5446 if $mtime > $configure_deps_greatest_timestamp;
5447 }
5449 scan_autoconf_traces ($configure_ac);
5451 @configure_input_files = sort keys %make_list;
5452 # Set input and output files if not specified by user.
5453 if (! @input_files)
5454 {
5455 @input_files = @configure_input_files;
5456 %output_files = %make_list;
5457 }
5460 if (! $seen_init_automake)
5461 {
5462 err_ac ("no proper invocation of AM_INIT_AUTOMAKE was found.\nYou "
5463 . "should verify that $configure_ac invokes AM_INIT_AUTOMAKE,"
5464 . "\nthat aclocal.m4 is present in the top-level directory,\n"
5465 . "and that aclocal.m4 was recently regenerated "
5466 . "(using aclocal)");
5467 }
5468 else
5469 {
5470 if (! $seen_automake_version)
5471 {
5472 if (-f 'aclocal.m4')
5473 {
5474 error ($seen_init_automake,
5475 "your implementation of AM_INIT_AUTOMAKE comes from " .
5476 "an\nold Automake version. You should recreate " .
5477 "aclocal.m4\nwith aclocal and run automake again",
5478 # $? = 63 is used to indicate version mismatch to missing.
5479 exit_code => 63);
5480 }
5481 else
5482 {
5483 error ($seen_init_automake,
5484 "no proper implementation of AM_INIT_AUTOMAKE was " .
5485 "found,\nprobably because aclocal.m4 is missing.\n" .
5486 "You should run aclocal to create this file, then\n" .
5487 "run automake again");
5488 }
5489 }
5490 }
5492 locate_aux_dir ();
5494 # Look for some files we need. Always check for these. This
5495 # check must be done for every run, even those where we are only
5496 # looking at a subdir Makefile. We must set relative_dir for
5497 # push_required_file to work.
5498 # Sort the files for stable verbose output.
5499 $relative_dir = '.';
5500 foreach my $file (sort keys %required_aux_file)
5501 {
5502 require_conf_file ($required_aux_file{$file}->get, FOREIGN, $file)
5503 }
5504 err_am "'install.sh' is an anachronism; use 'install-sh' instead"
5505 if -f $config_aux_dir . '/install.sh';
5507 # Preserve dist_common for later.
5508 $configure_dist_common = variable_value ('DIST_COMMON') || '';
5510 }
5512 ################################################################
5514 # Do any extra checking for GNU standards.
5515 sub check_gnu_standards
5516 {
5517 if ($relative_dir eq '.')
5518 {
5519 # In top level (or only) directory.
5520 require_file ("$am_file.am", GNU,
5521 qw/INSTALL NEWS README AUTHORS ChangeLog/);
5523 # Accept one of these three licenses; default to COPYING.
5524 # Make sure we do not overwrite an existing license.
5525 my $license;
5526 foreach (qw /COPYING COPYING.LIB COPYING.LESSER/)
5527 {
5528 if (-f $_)
5529 {
5530 $license = $_;
5531 last;
5532 }
5533 }
5534 require_file ("$am_file.am", GNU, 'COPYING')
5535 unless $license;
5536 }
5538 for my $opt ('no-installman', 'no-installinfo')
5539 {
5540 msg ('error-gnu', option $opt,
5541 "option '$opt' disallowed by GNU standards")
5542 if option $opt;
5543 }
5544 }
5546 # Do any extra checking for GNITS standards.
5547 sub check_gnits_standards
5548 {
5549 if ($relative_dir eq '.')
5550 {
5551 # In top level (or only) directory.
5552 require_file ("$am_file.am", GNITS, 'THANKS');
5553 }
5554 }
5556 ################################################################
5557 #
5558 # Functions to handle files of each language.
5560 # Each 'lang_X_rewrite($DIRECTORY, $BASE, $EXT)' function follows a
5561 # simple formula: Return value is LANG_SUBDIR if the resulting object
5562 # file should be in a subdir if the source file is, LANG_PROCESS if
5563 # file is to be dealt with, LANG_IGNORE otherwise.
5565 # Much of the actual processing is handled in
5566 # handle_single_transform. These functions exist so that
5567 # auxiliary information can be recorded for a later cleanup pass.
5568 # Note that the calls to these functions are computed, so don't bother
5569 # searching for their precise names in the source.
5571 # This is just a convenience function that can be used to determine
5572 # when a subdir object should be used.
5573 sub lang_sub_obj
5574 {
5575 return option 'subdir-objects' ? LANG_SUBDIR : LANG_PROCESS;
5576 }
5578 # Rewrite a single C source file.
5579 sub lang_c_rewrite
5580 {
5581 my ($directory, $base, $ext, $obj, $have_per_exec_flags, $var) = @_;
5583 my $r = LANG_PROCESS;
5584 if (option 'subdir-objects')
5585 {
5586 $r = LANG_SUBDIR;
5587 if ($directory && $directory ne '.')
5588 {
5589 $base = $directory . '/' . $base;
5591 # libtool is always able to put the object at the proper place,
5592 # so we do not have to require AM_PROG_CC_C_O when building .lo files.
5593 msg_var ('portability', $var,
5594 "compiling '$base.c' in subdir requires "
5595 . "'AM_PROG_CC_C_O' in '$configure_ac'",
5596 uniq_scope => US_GLOBAL,
5597 uniq_part => 'AM_PROG_CC_C_O subdir')
5598 unless $seen_cc_c_o || $obj eq '.lo';
5599 }
5600 }
5602 if (! $seen_cc_c_o
5603 && $have_per_exec_flags
5604 && ! option 'subdir-objects'
5605 && $obj ne '.lo')
5606 {
5607 msg_var ('portability',
5608 $var, "compiling '$base.c' with per-target flags requires "
5609 . "'AM_PROG_CC_C_O' in '$configure_ac'",
5610 uniq_scope => US_GLOBAL,
5611 uniq_part => 'AM_PROG_CC_C_O per-target')
5612 }
5614 return $r;
5615 }
5617 # Rewrite a single header file.
5618 sub lang_header_rewrite
5619 {
5620 # Header files are simply ignored.
5621 return LANG_IGNORE;
5622 }
5624 # Rewrite a single Vala source file.
5625 sub lang_vala_rewrite
5626 {
5627 my ($directory, $base, $ext) = @_;
5629 (my $newext = $ext) =~ s/vala$/c/;
5630 return (LANG_SUBDIR, $newext);
5631 }
5633 # Rewrite a single yacc/yacc++ file.
5634 sub lang_yacc_rewrite
5635 {
5636 my ($directory, $base, $ext) = @_;
5638 my $r = &lang_sub_obj;
5639 (my $newext = $ext) =~ tr/y/c/;
5640 return ($r, $newext);
5641 }
5642 sub lang_yaccxx_rewrite { lang_yacc_rewrite (@_); };
5644 # Rewrite a single lex/lex++ file.
5645 sub lang_lex_rewrite
5646 {
5647 my ($directory, $base, $ext) = @_;
5649 my $r = &lang_sub_obj;
5650 (my $newext = $ext) =~ tr/l/c/;
5651 return ($r, $newext);
5652 }
5653 sub lang_lexxx_rewrite { lang_lex_rewrite (@_); };
5655 # Rewrite a single Java file.
5656 sub lang_java_rewrite
5657 {
5658 return LANG_SUBDIR;
5659 }
5661 # The lang_X_finish functions are called after all source file
5662 # processing is done. Each should handle defining rules for the
5663 # language, etc. A finish function is only called if a source file of
5664 # the appropriate type has been seen.
5666 sub lang_vala_finish_target ($$)
5667 {
5668 my ($self, $name) = @_;
5670 my $derived = canonicalize ($name);
5671 my $var = var "${derived}_SOURCES";
5672 return unless $var;
5674 my @vala_sources = grep { /\.(vala|vapi)$/ } ($var->value_as_list_recursive);
5676 # For automake bug#11229.
5677 return unless @vala_sources;
5679 foreach my $vala_file (@vala_sources)
5680 {
5681 my $c_file = $vala_file;
5682 if ($c_file =~ s/(.*)\.vala$/$1.c/)
5683 {
5684 $c_file = "\$(srcdir)/$c_file";
5685 $output_rules .= "$c_file: \$(srcdir)/${derived}_vala.stamp\n"
5686 . "\t\@if test -f \$@; then :; else rm -f \$(srcdir)/${derived}_vala.stamp; fi\n"
5687 . "\t\@if test -f \$@; then :; else \\\n"
5688 . "\t \$(MAKE) \$(AM_MAKEFLAGS) \$(srcdir)/${derived}_vala.stamp; \\\n"
5689 . "\tfi\n";
5690 $clean_files{$c_file} = MAINTAINER_CLEAN;
5691 }
5692 }
5694 # Add rebuild rules for generated header and vapi files
5695 my $flags = var ($derived . '_VALAFLAGS');
5696 if ($flags)
5697 {
5698 my $lastflag = '';
5699 foreach my $flag ($flags->value_as_list_recursive)
5700 {
5701 if (grep (/$lastflag/, ('-H', '-h', '--header', '--internal-header',
5702 '--vapi', '--internal-vapi', '--gir')))
5703 {
5704 my $headerfile = "\$(srcdir)/$flag";
5705 $output_rules .= "$headerfile: \$(srcdir)/${derived}_vala.stamp\n"
5706 . "\t\@if test -f \$@; then :; else rm -f \$(srcdir)/${derived}_vala.stamp; fi\n"
5707 . "\t\@if test -f \$@; then :; else \\\n"
5708 . "\t \$(MAKE) \$(AM_MAKEFLAGS) \$(srcdir)/${derived}_vala.stamp; \\\n"
5709 . "\tfi\n";
5711 # valac is not used when building from dist tarballs
5712 # distribute the generated files
5713 push_dist_common ($headerfile);
5714 $clean_files{$headerfile} = MAINTAINER_CLEAN;
5715 }
5716 $lastflag = $flag;
5717 }
5718 }
5720 my $compile = $self->compile;
5722 # Rewrite each occurrence of 'AM_VALAFLAGS' in the compile
5723 # rule into '${derived}_VALAFLAGS' if it exists.
5724 my $val = "${derived}_VALAFLAGS";
5725 $compile =~ s/\(AM_VALAFLAGS\)/\($val\)/
5726 if set_seen ($val);
5728 # VALAFLAGS is a user variable (per GNU Standards),
5729 # it should not be overridden in the Makefile...
5730 check_user_variables 'VALAFLAGS';
5732 my $dirname = dirname ($name);
5734 # Only generate C code, do not run C compiler
5735 $compile .= " -C";
5737 my $verbose = verbose_flag ('VALAC');
5738 my $silent = silent_flag ();
5739 my $stampfile = "\$(srcdir)/${derived}_vala.stamp";
5741 $output_rules .=
5742 "\$(srcdir)/${derived}_vala.stamp: @vala_sources\n".
5743 # Since the C files generated from the vala sources depend on the
5744 # ${derived}_vala.stamp file, we must ensure its timestamp is older than
5745 # those of the C files generated by the valac invocation below (this is
5746 # especially important on systems with sub-second timestamp resolution).
5747 # Thus we need to create the stamp file *before* invoking valac, and to
5748 # move it to its final location only after valac has been invoked.
5749 "\t${silent}rm -f \$\@ && echo stamp > \$\@-t\n".
5750 "\t${verbose}\$(am__cd) \$(srcdir) && $compile @vala_sources\n".
5751 "\t${silent}mv -f \$\@-t \$\@\n";
5753 push_dist_common ($stampfile);
5755 $clean_files{$stampfile} = MAINTAINER_CLEAN;
5756 }
5758 # Add output rules to invoke valac and create stamp file as a witness
5759 # to handle multiple outputs. This function is called after all source
5760 # file processing is done.
5761 sub lang_vala_finish
5762 {
5763 my ($self) = @_;
5765 foreach my $prog (keys %known_programs)
5766 {
5767 lang_vala_finish_target ($self, $prog);
5768 }
5770 while (my ($name) = each %known_libraries)
5771 {
5772 lang_vala_finish_target ($self, $name);
5773 }
5774 }
5776 # The built .c files should be cleaned only on maintainer-clean
5777 # as the .c files are distributed. This function is called for each
5778 # .vala source file.
5779 sub lang_vala_target_hook
5780 {
5781 my ($self, $aggregate, $output, $input, %transform) = @_;
5783 $clean_files{$output} = MAINTAINER_CLEAN;
5784 }
5786 # This is a yacc helper which is called whenever we have decided to
5787 # compile a yacc file.
5788 sub lang_yacc_target_hook
5789 {
5790 my ($self, $aggregate, $output, $input, %transform) = @_;
5792 # If some relevant *YFLAGS variable contains the '-d' flag, we'll
5793 # have to to generate special code.
5794 my $yflags_contains_minus_d = 0;
5796 foreach my $pfx ("", "${aggregate}_")
5797 {
5798 my $yflagsvar = var ("${pfx}YFLAGS");
5799 next unless $yflagsvar;
5800 # We cannot work reliably with conditionally-defined YFLAGS.
5801 if ($yflagsvar->has_conditional_contents)
5802 {
5803 msg_var ('unsupported', $yflagsvar,
5804 "'${pfx}YFLAGS' cannot have conditional contents");
5805 }
5806 else
5807 {
5808 $yflags_contains_minus_d = 1
5809 if grep (/^-d$/, $yflagsvar->value_as_list_recursive);
5810 }
5811 }
5813 if ($yflags_contains_minus_d)
5814 {
5815 # Found a '-d' that applies to the compilation of this file.
5816 # Add a dependency for the generated header file, and arrange
5817 # for that file to be included in the distribution.
5819 # The extension of the output file (e.g., '.c' or '.cxx').
5820 # We'll need it to compute the name of the generated header file.
5821 (my $output_ext = basename ($output)) =~ s/.*(\.[^.]+)$/$1/;
5823 # We know that a yacc input should be turned into either a C or
5824 # C++ output file. We depend on this fact (here and in yacc.am),
5825 # so check that it really holds.
5826 my $lang = $languages{$extension_map{$output_ext}};
5827 prog_error "invalid output name '$output' for yacc file '$input'"
5828 if (!$lang || ($lang->name ne 'c' && $lang->name ne 'cxx'));
5830 (my $header_ext = $output_ext) =~ s/c/h/g;
5831 # Quote $output_ext in the regexp, so that dots in it are taken
5832 # as literal dots, not as metacharacters.
5833 (my $header = $output) =~ s/\Q$output_ext\E$/$header_ext/;
5835 foreach my $cond (Automake::Rule::define (${header}, 'internal',
5836 RULE_AUTOMAKE, TRUE,
5837 INTERNAL))
5838 {
5839 my $condstr = $cond->subst_string;
5840 $output_rules .=
5841 "$condstr${header}: $output\n"
5842 # Recover from removal of $header
5843 . "$condstr\t\@if test ! -f \$@; then rm -f $output; else :; fi\n"
5844 . "$condstr\t\@if test ! -f \$@; then \$(MAKE) \$(AM_MAKEFLAGS) $output; else :; fi\n";
5845 }
5846 # Distribute the generated file, unless its .y source was
5847 # listed in a nodist_ variable. (&handle_source_transform
5848 # will set DIST_SOURCE.)
5849 &push_dist_common ($header)
5850 if $transform{'DIST_SOURCE'};
5852 # The GNU rules say that yacc/lex output files should be removed
5853 # by maintainer-clean. However, if the files are not distributed,
5854 # then we want to remove them with "make clean"; otherwise,
5855 # "make distcheck" will fail.
5856 $clean_files{$header} = $transform{'DIST_SOURCE'} ? MAINTAINER_CLEAN : CLEAN;
5857 }
5858 # See the comment above for $HEADER.
5859 $clean_files{$output} = $transform{'DIST_SOURCE'} ? MAINTAINER_CLEAN : CLEAN;
5860 }
5862 # This is a lex helper which is called whenever we have decided to
5863 # compile a lex file.
5864 sub lang_lex_target_hook
5865 {
5866 my ($self, $aggregate, $output, $input, %transform) = @_;
5867 # The GNU rules say that yacc/lex output files should be removed
5868 # by maintainer-clean. However, if the files are not distributed,
5869 # then we want to remove them with "make clean"; otherwise,
5870 # "make distcheck" will fail.
5871 $clean_files{$output} = $transform{'DIST_SOURCE'} ? MAINTAINER_CLEAN : CLEAN;
5872 }
5874 # This is a helper for both lex and yacc.
5875 sub yacc_lex_finish_helper
5876 {
5877 return if defined $language_scratch{'lex-yacc-done'};
5878 $language_scratch{'lex-yacc-done'} = 1;
5880 # FIXME: for now, no line number.
5881 require_conf_file ($configure_ac, FOREIGN, 'ylwrap');
5882 &define_variable ('YLWRAP', "$am_config_aux_dir/ylwrap", INTERNAL);
5883 }
5885 sub lang_yacc_finish
5886 {
5887 return if defined $language_scratch{'yacc-done'};
5888 $language_scratch{'yacc-done'} = 1;
5890 reject_var 'YACCFLAGS', "'YACCFLAGS' obsolete; use 'YFLAGS' instead";
5892 yacc_lex_finish_helper;
5893 }
5896 sub lang_lex_finish
5897 {
5898 return if defined $language_scratch{'lex-done'};
5899 $language_scratch{'lex-done'} = 1;
5901 yacc_lex_finish_helper;
5902 }
5905 # Given a hash table of linker names, pick the name that has the most
5906 # precedence. This is lame, but something has to have global
5907 # knowledge in order to eliminate the conflict. Add more linkers as
5908 # required.
5909 sub resolve_linker
5910 {
5911 my (%linkers) = @_;
5913 foreach my $l (qw(GCJLINK OBJCXXLINK CXXLINK F77LINK FCLINK OBJCLINK UPCLINK))
5914 {
5915 return $l if defined $linkers{$l};
5916 }
5917 return 'LINK';
5918 }
5920 # Called to indicate that an extension was used.
5921 sub saw_extension
5922 {
5923 my ($ext) = @_;
5924 $extension_seen{$ext} = 1;
5925 }
5927 # register_language (%ATTRIBUTE)
5928 # ------------------------------
5929 # Register a single language.
5930 # Each %ATTRIBUTE is of the form ATTRIBUTE => VALUE.
5931 sub register_language (%)
5932 {
5933 my (%option) = @_;
5935 # Set the defaults.
5936 $option{'autodep'} = 'no'
5937 unless defined $option{'autodep'};
5938 $option{'linker'} = ''
5939 unless defined $option{'linker'};
5940 $option{'flags'} = []
5941 unless defined $option{'flags'};
5942 $option{'output_extensions'} = sub { return ( '.$(OBJEXT)', '.lo' ) }
5943 unless defined $option{'output_extensions'};
5944 $option{'nodist_specific'} = 0
5945 unless defined $option{'nodist_specific'};
5947 my $lang = new Language (%option);
5949 # Fill indexes.
5950 $extension_map{$_} = $lang->name foreach @{$lang->extensions};
5951 $languages{$lang->name} = $lang;
5952 my $link = $lang->linker;
5953 if ($link)
5954 {
5955 if (exists $link_languages{$link})
5956 {
5957 prog_error ("'$link' has different definitions in "
5958 . $lang->name . " and " . $link_languages{$link}->name)
5959 if $lang->link ne $link_languages{$link}->link;
5960 }
5961 else
5962 {
5963 $link_languages{$link} = $lang;
5964 }
5965 }
5967 # Update the pattern of known extensions.
5968 accept_extensions (@{$lang->extensions});
5970 # Upate the $suffix_rule map.
5971 foreach my $suffix (@{$lang->extensions})
5972 {
5973 foreach my $dest (&{$lang->output_extensions} ($suffix))
5974 {
5975 register_suffix_rule (INTERNAL, $suffix, $dest);
5976 }
5977 }
5978 }
5980 # derive_suffix ($EXT, $OBJ)
5981 # --------------------------
5982 # This function is used to find a path from a user-specified suffix $EXT
5983 # to $OBJ or to some other suffix we recognize internally, e.g. 'cc'.
5984 sub derive_suffix ($$)
5985 {
5986 my ($source_ext, $obj) = @_;
5988 while (! $extension_map{$source_ext}
5989 && $source_ext ne $obj
5990 && exists $suffix_rules->{$source_ext}
5991 && exists $suffix_rules->{$source_ext}{$obj})
5992 {
5993 $source_ext = $suffix_rules->{$source_ext}{$obj}[0];
5994 }
5996 return $source_ext;
5997 }
6000 ################################################################
6002 # Pretty-print something and append to output_rules.
6003 sub pretty_print_rule
6004 {
6005 $output_rules .= &makefile_wrap (@_);
6006 }
6009 ################################################################
6012 ## -------------------------------- ##
6013 ## Handling the conditional stack. ##
6014 ## -------------------------------- ##
6017 # $STRING
6018 # make_conditional_string ($NEGATE, $COND)
6019 # ----------------------------------------
6020 sub make_conditional_string ($$)
6021 {
6022 my ($negate, $cond) = @_;
6023 $cond = "${cond}_TRUE"
6024 unless $cond =~ /^TRUE|FALSE$/;
6025 $cond = Automake::Condition::conditional_negate ($cond)
6026 if $negate;
6027 return $cond;
6028 }
6031 my %_am_macro_for_cond =
6032 (
6033 AMDEP => "one of the compiler tests\n"
6034 . " AC_PROG_CC, AC_PROG_CXX, AC_PROG_OBJC, AC_PROG_OBJCXX,\n"
6035 . " AM_PROG_AS, AM_PROG_GCJ, AM_PROG_UPC",
6036 am__fastdepCC => 'AC_PROG_CC',
6037 am__fastdepCCAS => 'AM_PROG_AS',
6038 am__fastdepCXX => 'AC_PROG_CXX',
6039 am__fastdepGCJ => 'AM_PROG_GCJ',
6040 am__fastdepOBJC => 'AC_PROG_OBJC',
6041 am__fastdepOBJCXX => 'AC_PROG_OBJCXX',
6042 am__fastdepUPC => 'AM_PROG_UPC'
6043 );
6045 # $COND
6046 # cond_stack_if ($NEGATE, $COND, $WHERE)
6047 # --------------------------------------
6048 sub cond_stack_if ($$$)
6049 {
6050 my ($negate, $cond, $where) = @_;
6052 if (! $configure_cond{$cond} && $cond !~ /^TRUE|FALSE$/)
6053 {
6054 my $text = "$cond does not appear in AM_CONDITIONAL";
6055 my $scope = US_LOCAL;
6056 if (exists $_am_macro_for_cond{$cond})
6057 {
6058 my $mac = $_am_macro_for_cond{$cond};
6059 $text .= "\n The usual way to define '$cond' is to add ";
6060 $text .= ($mac =~ / /) ? $mac : "'$mac'";
6061 $text .= "\n to '$configure_ac' and run 'aclocal' and 'autoconf' again";
6062 # These warnings appear in Automake files (depend2.am),
6063 # so there is no need to display them more than once:
6064 $scope = US_GLOBAL;
6065 }
6066 error $where, $text, uniq_scope => $scope;
6067 }
6069 push (@cond_stack, make_conditional_string ($negate, $cond));
6071 return new Automake::Condition (@cond_stack);
6072 }
6075 # $COND
6076 # cond_stack_else ($NEGATE, $COND, $WHERE)
6077 # ----------------------------------------
6078 sub cond_stack_else ($$$)
6079 {
6080 my ($negate, $cond, $where) = @_;
6082 if (! @cond_stack)
6083 {
6084 error $where, "else without if";
6085 return FALSE;
6086 }
6088 $cond_stack[$#cond_stack] =
6089 Automake::Condition::conditional_negate ($cond_stack[$#cond_stack]);
6091 # If $COND is given, check against it.
6092 if (defined $cond)
6093 {
6094 $cond = make_conditional_string ($negate, $cond);
6096 error ($where, "else reminder ($negate$cond) incompatible with "
6097 . "current conditional: $cond_stack[$#cond_stack]")
6098 if $cond_stack[$#cond_stack] ne $cond;
6099 }
6101 return new Automake::Condition (@cond_stack);
6102 }
6105 # $COND
6106 # cond_stack_endif ($NEGATE, $COND, $WHERE)
6107 # -----------------------------------------
6108 sub cond_stack_endif ($$$)
6109 {
6110 my ($negate, $cond, $where) = @_;
6111 my $old_cond;
6113 if (! @cond_stack)
6114 {
6115 error $where, "endif without if";
6116 return TRUE;
6117 }
6119 # If $COND is given, check against it.
6120 if (defined $cond)
6121 {
6122 $cond = make_conditional_string ($negate, $cond);
6124 error ($where, "endif reminder ($negate$cond) incompatible with "
6125 . "current conditional: $cond_stack[$#cond_stack]")
6126 if $cond_stack[$#cond_stack] ne $cond;
6127 }
6129 pop @cond_stack;
6131 return new Automake::Condition (@cond_stack);
6132 }
6138 ## ------------------------ ##
6139 ## Handling the variables. ##
6140 ## ------------------------ ##
6143 # &define_pretty_variable ($VAR, $COND, $WHERE, @VALUE)
6144 # -----------------------------------------------------
6145 # Like define_variable, but the value is a list, and the variable may
6146 # be defined conditionally. The second argument is the condition
6147 # under which the value should be defined; this should be the empty
6148 # string to define the variable unconditionally. The third argument
6149 # is a list holding the values to use for the variable. The value is
6150 # pretty printed in the output file.
6151 sub define_pretty_variable ($$$@)
6152 {
6153 my ($var, $cond, $where, @value) = @_;
6155 if (! vardef ($var, $cond))
6156 {
6157 Automake::Variable::define ($var, VAR_AUTOMAKE, '', $cond, "@value",
6158 '', $where, VAR_PRETTY);
6159 rvar ($var)->rdef ($cond)->set_seen;
6160 }
6161 }
6164 # define_variable ($VAR, $VALUE, $WHERE)
6165 # --------------------------------------
6166 # Define a new Automake Makefile variable VAR to VALUE, but only if
6167 # not already defined.
6168 sub define_variable ($$$)
6169 {
6170 my ($var, $value, $where) = @_;
6171 define_pretty_variable ($var, TRUE, $where, $value);
6172 }
6175 # define_files_variable ($VAR, \@BASENAME, $EXTENSION, $WHERE)
6176 # ------------------------------------------------------------
6177 # Define the $VAR which content is the list of file names composed of
6178 # a @BASENAME and the $EXTENSION.
6179 sub define_files_variable ($\@$$)
6180 {
6181 my ($var, $basename, $extension, $where) = @_;
6182 define_variable ($var,
6183 join (' ', map { "$_.$extension" } @$basename),
6184 $where);
6185 }
6188 # Like define_variable, but define a variable to be the configure
6189 # substitution by the same name.
6190 sub define_configure_variable ($)
6191 {
6192 my ($var) = @_;
6193 # Some variables we do not want to output. For instance it
6194 # would be a bad idea to output `U = @U@` when `@U@` can be
6195 # substituted as `\`.
6196 my $pretty = exists $ignored_configure_vars{$var} ? VAR_SILENT : VAR_ASIS;
6197 Automake::Variable::define ($var, VAR_CONFIGURE, '', TRUE, subst $var,
6198 '', $configure_vars{$var}, $pretty);
6199 }
6202 # define_compiler_variable ($LANG)
6203 # --------------------------------
6204 # Define a compiler variable. We also handle defining the 'LT'
6205 # version of the command when using libtool.
6206 sub define_compiler_variable ($)
6207 {
6208 my ($lang) = @_;
6210 my ($var, $value) = ($lang->compiler, $lang->compile);
6211 my $libtool_tag = '';
6212 $libtool_tag = '--tag=' . $lang->libtool_tag . ' '
6213 if $lang->libtool_tag && exists $libtool_tags{$lang->libtool_tag};
6214 &define_variable ($var, $value, INTERNAL);
6215 if (var ('LIBTOOL'))
6216 {
6217 my $verbose = define_verbose_libtool ();
6218 &define_variable ("LT$var",
6219 "\$(LIBTOOL) $verbose $libtool_tag\$(AM_LIBTOOLFLAGS) "
6220 . "\$(LIBTOOLFLAGS) --mode=compile $value",
6221 INTERNAL);
6222 }
6223 define_verbose_tagvar ($lang->ccer || 'GEN');
6224 }
6227 # define_linker_variable ($LANG)
6228 # ------------------------------
6229 # Define linker variables.
6230 sub define_linker_variable ($)
6231 {
6232 my ($lang) = @_;
6234 my $libtool_tag = '';
6235 $libtool_tag = '--tag=' . $lang->libtool_tag . ' '
6236 if $lang->libtool_tag && exists $libtool_tags{$lang->libtool_tag};
6237 # CCLD = $(CC).
6238 &define_variable ($lang->lder, $lang->ld, INTERNAL);
6239 # CCLINK = $(CCLD) blah blah...
6240 my $link = '';
6241 if (var ('LIBTOOL'))
6242 {
6243 my $verbose = define_verbose_libtool ();
6244 $link = "\$(LIBTOOL) $verbose $libtool_tag\$(AM_LIBTOOLFLAGS) "
6245 . "\$(LIBTOOLFLAGS) --mode=link ";
6246 }
6247 &define_variable ($lang->linker, $link . $lang->link, INTERNAL);
6248 &define_variable ($lang->compiler, $lang);
6249 &define_verbose_tagvar ($lang->lder || 'GEN');
6250 }
6252 sub define_per_target_linker_variable ($$)
6253 {
6254 my ($linker, $target) = @_;
6256 # If the user wrote a custom link command, we don't define ours.
6257 return "${target}_LINK"
6258 if set_seen "${target}_LINK";
6260 my $xlink = $linker ? $linker : 'LINK';
6262 my $lang = $link_languages{$xlink};
6263 prog_error "Unknown language for linker variable '$xlink'"
6264 unless $lang;
6266 my $link_command = $lang->link;
6267 if (var 'LIBTOOL')
6268 {
6269 my $libtool_tag = '';
6270 $libtool_tag = '--tag=' . $lang->libtool_tag . ' '
6271 if $lang->libtool_tag && exists $libtool_tags{$lang->libtool_tag};
6273 my $verbose = define_verbose_libtool ();
6274 $link_command =
6275 "\$(LIBTOOL) $verbose $libtool_tag\$(AM_LIBTOOLFLAGS) \$(LIBTOOLFLAGS) "
6276 . "--mode=link " . $link_command;
6277 }
6279 # Rewrite each occurrence of 'AM_$flag' in the link
6280 # command into '${derived}_$flag' if it exists.
6281 my $orig_command = $link_command;
6282 my @flags = (@{$lang->flags}, 'LDFLAGS');
6283 push @flags, 'LIBTOOLFLAGS' if var 'LIBTOOL';
6284 for my $flag (@flags)
6285 {
6286 my $val = "${target}_$flag";
6287 $link_command =~ s/\(AM_$flag\)/\($val\)/
6288 if set_seen ($val);
6289 }
6291 # If the computed command is the same as the generic command, use
6292 # the command linker variable.
6293 return ($lang->linker, $lang->lder)
6294 if $link_command eq $orig_command;
6296 &define_variable ("${target}_LINK", $link_command, INTERNAL);
6297 return ("${target}_LINK", $lang->lder);
6298 }
6300 ################################################################
6302 # &check_trailing_slash ($WHERE, $LINE)
6303 # -------------------------------------
6304 # Return 1 iff $LINE ends with a slash.
6305 # Might modify $LINE.
6306 sub check_trailing_slash ($\$)
6307 {
6308 my ($where, $line) = @_;
6310 # Ignore '##' lines.
6311 return 0 if $$line =~ /$IGNORE_PATTERN/o;
6313 # Catch and fix a common error.
6314 msg "syntax", $where, "whitespace following trailing backslash"
6315 if $$line =~ s/\\\s+\n$/\\\n/;
6317 return $$line =~ /\\$/;
6318 }
6321 # &read_am_file ($AMFILE, $WHERE)
6322 # -------------------------------
6323 # Read Makefile.am and set up %contents. Simultaneously copy lines
6324 # from Makefile.am into $output_trailer, or define variables as
6325 # appropriate. NOTE we put rules in the trailer section. We want
6326 # user rules to come after our generated stuff.
6327 sub read_am_file ($$)
6328 {
6329 my ($amfile, $where) = @_;
6331 my $am_file = new Automake::XFile ("< $amfile");
6332 verb "reading $amfile";
6334 # Keep track of the youngest output dependency.
6335 my $mtime = mtime $amfile;
6336 $output_deps_greatest_timestamp = $mtime
6337 if $mtime > $output_deps_greatest_timestamp;
6339 my $spacing = '';
6340 my $comment = '';
6341 my $blank = 0;
6342 my $saw_bk = 0;
6343 my $var_look = VAR_ASIS;
6345 use constant IN_VAR_DEF => 0;
6346 use constant IN_RULE_DEF => 1;
6347 use constant IN_COMMENT => 2;
6348 my $prev_state = IN_RULE_DEF;
6350 while ($_ = $am_file->getline)
6351 {
6352 $where->set ("$amfile:$.");
6353 if (/$IGNORE_PATTERN/o)
6354 {
6355 # Merely delete comments beginning with two hashes.
6356 }
6357 elsif (/$WHITE_PATTERN/o)
6358 {
6359 error $where, "blank line following trailing backslash"
6360 if $saw_bk;
6361 # Stick a single white line before the incoming macro or rule.
6362 $spacing = "\n";
6363 $blank = 1;
6364 # Flush all comments seen so far.
6365 if ($comment ne '')
6366 {
6367 $output_vars .= $comment;
6368 $comment = '';
6369 }
6370 }
6371 elsif (/$COMMENT_PATTERN/o)
6372 {
6373 # Stick comments before the incoming macro or rule. Make
6374 # sure a blank line precedes the first block of comments.
6375 $spacing = "\n" unless $blank;
6376 $blank = 1;
6377 $comment .= $spacing . $_;
6378 $spacing = '';
6379 $prev_state = IN_COMMENT;
6380 }
6381 else
6382 {
6383 last;
6384 }
6385 $saw_bk = check_trailing_slash ($where, $_);
6386 }
6388 # We save the conditional stack on entry, and then check to make
6389 # sure it is the same on exit. This lets us conditionally include
6390 # other files.
6391 my @saved_cond_stack = @cond_stack;
6392 my $cond = new Automake::Condition (@cond_stack);
6394 my $last_var_name = '';
6395 my $last_var_type = '';
6396 my $last_var_value = '';
6397 my $last_where;
6398 # FIXME: shouldn't use $_ in this loop; it is too big.
6399 while ($_)
6400 {
6401 $where->set ("$amfile:$.");
6403 # Make sure the line is \n-terminated.
6404 chomp;
6405 $_ .= "\n";
6407 # Don't look at MAINTAINER_MODE_TRUE here. That shouldn't be
6408 # used by users. @MAINT@ is an anachronism now.
6409 $_ =~ s/\@MAINT\@//g
6410 unless $seen_maint_mode;
6412 my $new_saw_bk = check_trailing_slash ($where, $_);
6414 if (/$IGNORE_PATTERN/o)
6415 {
6416 # Merely delete comments beginning with two hashes.
6418 # Keep any backslash from the previous line.
6419 $new_saw_bk = $saw_bk;
6420 }
6421 elsif (/$WHITE_PATTERN/o)
6422 {
6423 # Stick a single white line before the incoming macro or rule.
6424 $spacing = "\n";
6425 error $where, "blank line following trailing backslash"
6426 if $saw_bk;
6427 }
6428 elsif (/$COMMENT_PATTERN/o)
6429 {
6430 error $where, "comment following trailing backslash"
6431 if $saw_bk && $prev_state != IN_COMMENT;
6433 # Stick comments before the incoming macro or rule.
6434 $comment .= $spacing . $_;
6435 $spacing = '';
6436 $prev_state = IN_COMMENT;
6437 }
6438 elsif ($saw_bk)
6439 {
6440 if ($prev_state == IN_RULE_DEF)
6441 {
6442 my $cond = new Automake::Condition @cond_stack;
6443 $output_trailer .= $cond->subst_string;
6444 $output_trailer .= $_;
6445 }
6446 elsif ($prev_state == IN_COMMENT)
6447 {
6448 # If the line doesn't start with a '#', add it.
6449 # We do this because a continued comment like
6450 # # A = foo \
6451 # bar \
6452 # baz
6453 # is not portable. BSD make doesn't honor
6454 # escaped newlines in comments.
6455 s/^#?/#/;
6456 $comment .= $spacing . $_;
6457 }
6458 else # $prev_state == IN_VAR_DEF
6459 {
6460 $last_var_value .= ' '
6461 unless $last_var_value =~ /\s$/;
6462 $last_var_value .= $_;
6464 if (!/\\$/)
6465 {
6466 Automake::Variable::define ($last_var_name, VAR_MAKEFILE,
6467 $last_var_type, $cond,
6468 $last_var_value, $comment,
6469 $last_where, VAR_ASIS)
6470 if $cond != FALSE;
6471 $comment = $spacing = '';
6472 }
6473 }
6474 }
6476 elsif (/$IF_PATTERN/o)
6477 {
6478 $cond = cond_stack_if ($1, $2, $where);
6479 }
6480 elsif (/$ELSE_PATTERN/o)
6481 {
6482 $cond = cond_stack_else ($1, $2, $where);
6483 }
6484 elsif (/$ENDIF_PATTERN/o)
6485 {
6486 $cond = cond_stack_endif ($1, $2, $where);
6487 }
6489 elsif (/$RULE_PATTERN/o)
6490 {
6491 # Found a rule.
6492 $prev_state = IN_RULE_DEF;
6494 # For now we have to output all definitions of user rules
6495 # and can't diagnose duplicates (see the comment in
6496 # Automake::Rule::define). So we go on and ignore the return value.
6497 Automake::Rule::define ($1, $amfile, RULE_USER, $cond, $where);
6499 check_variable_expansions ($_, $where);
6501 $output_trailer .= $comment . $spacing;
6502 my $cond = new Automake::Condition @cond_stack;
6503 $output_trailer .= $cond->subst_string;
6504 $output_trailer .= $_;
6505 $comment = $spacing = '';
6506 }
6507 elsif (/$ASSIGNMENT_PATTERN/o)
6508 {
6509 # Found a macro definition.
6510 $prev_state = IN_VAR_DEF;
6511 $last_var_name = $1;
6512 $last_var_type = $2;
6513 $last_var_value = $3;
6514 $last_where = $where->clone;
6515 if ($3 ne '' && substr ($3, -1) eq "\\")
6516 {
6517 # We preserve the '\' because otherwise the long lines
6518 # that are generated will be truncated by broken
6519 # 'sed's.
6520 $last_var_value = $3 . "\n";
6521 }
6522 # Normally we try to output variable definitions in the
6523 # same format they were input. However, POSIX compliant
6524 # systems are not required to support lines longer than
6525 # 2048 bytes (most notably, some sed implementation are
6526 # limited to 4000 bytes, and sed is used by config.status
6527 # to rewrite Makefile.in into Makefile). Moreover nobody
6528 # would really write such long lines by hand since it is
6529 # hardly maintainable. So if a line is longer that 1000
6530 # bytes (an arbitrary limit), assume it has been
6531 # automatically generated by some tools, and flatten the
6532 # variable definition. Otherwise, keep the variable as it
6533 # as been input.
6534 $var_look = VAR_PRETTY if length ($last_var_value) >= 1000;
6536 if (!/\\$/)
6537 {
6538 Automake::Variable::define ($last_var_name, VAR_MAKEFILE,
6539 $last_var_type, $cond,
6540 $last_var_value, $comment,
6541 $last_where, $var_look)
6542 if $cond != FALSE;
6543 $comment = $spacing = '';
6544 $var_look = VAR_ASIS;
6545 }
6546 }
6547 elsif (/$INCLUDE_PATTERN/o)
6548 {
6549 my $path = $1;
6551 if ($path =~ s/^\$\(top_srcdir\)\///)
6552 {
6553 push (@include_stack, "\$\(top_srcdir\)/$path");
6554 # Distribute any included file.
6556 # Always use the $(top_srcdir) prefix in DIST_COMMON,
6557 # otherwise OSF make will implicitly copy the included
6558 # file in the build tree during "make distdir" to satisfy
6559 # the dependency.
6560 # (subdircond2.test and subdircond3.test will fail.)
6561 push_dist_common ("\$\(top_srcdir\)/$path");
6562 }
6563 else
6564 {
6565 $path =~ s/\$\(srcdir\)\///;
6566 push (@include_stack, "\$\(srcdir\)/$path");
6567 # Always use the $(srcdir) prefix in DIST_COMMON,
6568 # otherwise OSF make will implicitly copy the included
6569 # file in the build tree during "make distdir" to satisfy
6570 # the dependency.
6571 # (subdircond2.test and subdircond3.test will fail.)
6572 push_dist_common ("\$\(srcdir\)/$path");
6573 $path = $relative_dir . "/" . $path if $relative_dir ne '.';
6574 }
6575 $where->push_context ("'$path' included from here");
6576 &read_am_file ($path, $where);
6577 $where->pop_context;
6578 }
6579 else
6580 {
6581 # This isn't an error; it is probably a continued rule.
6582 # In fact, this is what we assume.
6583 $prev_state = IN_RULE_DEF;
6584 check_variable_expansions ($_, $where);
6585 $output_trailer .= $comment . $spacing;
6586 my $cond = new Automake::Condition @cond_stack;
6587 $output_trailer .= $cond->subst_string;
6588 $output_trailer .= $_;
6589 $comment = $spacing = '';
6590 error $where, "'#' comment at start of rule is unportable"
6591 if $_ =~ /^\t\s*\#/;
6592 }
6594 $saw_bk = $new_saw_bk;
6595 $_ = $am_file->getline;
6596 }
6598 $output_trailer .= $comment;
6600 error ($where, "trailing backslash on last line")
6601 if $saw_bk;
6603 error ($where, (@cond_stack ? "unterminated conditionals: @cond_stack"
6604 : "too many conditionals closed in include file"))
6605 if "@saved_cond_stack" ne "@cond_stack";
6606 }
6609 # define_standard_variables ()
6610 # ----------------------------
6611 # A helper for read_main_am_file which initializes configure variables
6612 # and variables from header-vars.am.
6613 sub define_standard_variables
6614 {
6615 my $saved_output_vars = $output_vars;
6616 my ($comments, undef, $rules) =
6617 file_contents_internal (1, "$libdir/am/header-vars.am",
6618 new Automake::Location);
6620 foreach my $var (sort keys %configure_vars)
6621 {
6622 &define_configure_variable ($var);
6623 }
6625 $output_vars .= $comments . $rules;
6626 }
6628 # Read main am file.
6629 sub read_main_am_file ($$)
6630 {
6631 my ($amfile, $infile) = @_;
6633 # This supports the strange variable tricks we are about to play.
6634 prog_error ("variable defined before read_main_am_file\n" . variables_dump ())
6635 if (scalar (variables) > 0);
6637 # Generate copyright header for generated Makefile.in.
6638 # We do discard the output of predefined variables, handled below.
6639 $output_vars = ("# " . basename ($infile) . " generated by automake "
6640 . $VERSION . " from " . basename ($amfile) . ".\n");
6641 $output_vars .= '# ' . subst ('configure_input') . "\n";
6642 $output_vars .= $gen_copyright;
6644 # We want to predefine as many variables as possible. This lets
6645 # the user set them with '+=' in Makefile.am.
6646 &define_standard_variables;
6648 # Read user file, which might override some of our values.
6649 &read_am_file ($amfile, new Automake::Location);
6650 }
6654 ################################################################
6656 # $FLATTENED
6657 # &flatten ($STRING)
6658 # ------------------
6659 # Flatten the $STRING and return the result.
6660 sub flatten
6661 {
6662 $_ = shift;
6664 s/\\\n//somg;
6665 s/\s+/ /g;
6666 s/^ //;
6667 s/ $//;
6669 return $_;
6670 }
6673 # transform_token ($TOKEN, \%PAIRS, $KEY)
6674 # =======================================
6675 # Return the value associated to $KEY in %PAIRS, as used on $TOKEN
6676 # (which should be ?KEY? or any of the special %% requests)..
6677 sub transform_token ($$$)
6678 {
6679 my ($token, $transform, $key) = @_;
6680 my $res = $transform->{$key};
6681 prog_error "Unknown key '$key' in '$token'" unless defined $res;
6682 return $res;
6683 }
6686 # transform ($TOKEN, \%PAIRS)
6687 # ===========================
6688 # If ($TOKEN, $VAL) is in %PAIRS:
6689 # - replaces %KEY% with $VAL,
6690 # - enables/disables ?KEY? and ?!KEY?,
6691 # - replaces %?KEY% with TRUE or FALSE.
6692 sub transform ($$)
6693 {
6694 my ($token, $transform) = @_;
6696 # %KEY%.
6697 # Must be before the following pattern to exclude the case
6698 # when there is neither IFTRUE nor IFFALSE.
6699 if ($token =~ /^%([\w\-]+)%$/)
6700 {
6701 return transform_token ($token, $transform, $1);
6702 }
6703 # %?KEY%.
6704 elsif ($token =~ /^%\?([\w\-]+)%$/)
6705 {
6706 return transform_token ($token, $transform, $1) ? 'TRUE' : 'FALSE';
6707 }
6708 # ?KEY? and ?!KEY?.
6709 elsif ($token =~ /^ \? (!?) ([\w\-]+) \? $/x)
6710 {
6711 my $neg = ($1 eq '!') ? 1 : 0;
6712 my $val = transform_token ($token, $transform, $2);
6713 return (!!$val == $neg) ? '##%' : '';
6714 }
6715 else
6716 {
6717 prog_error "Unknown request format: $token";
6718 }
6719 }
6721 # $TEXT
6722 # preprocess_file ($MAKEFILE, [%TRANSFORM])
6723 # -----------------------------------------
6724 # Load a $MAKEFILE, apply the %TRANSFORM, and return the result.
6725 # No extra parsing or post-processing is done (i.e., recognition of
6726 # rules declaration or of make variables definitions).
6727 sub preprocess_file ($%)
6728 {
6729 my ($file, %transform) = @_;
6731 # Complete %transform with global options.
6732 # Note that %transform goes last, so it overrides global options.
6733 %transform = ( 'MAINTAINER-MODE'
6734 => $seen_maint_mode ? subst ('MAINTAINER_MODE_TRUE') : '',
6736 'XZ' => !! option 'dist-xz',
6737 'LZIP' => !! option 'dist-lzip',
6738 'BZIP2' => !! option 'dist-bzip2',
6739 'COMPRESS' => !! option 'dist-tarZ',
6740 'GZIP' => ! option 'no-dist-gzip',
6741 'SHAR' => !! option 'dist-shar',
6742 'ZIP' => !! option 'dist-zip',
6744 'INSTALL-INFO' => ! option 'no-installinfo',
6745 'INSTALL-MAN' => ! option 'no-installman',
6746 'CK-NEWS' => !! option 'check-news',
6748 'SUBDIRS' => !! var ('SUBDIRS'),
6749 'TOPDIR_P' => $relative_dir eq '.',
6751 'BUILD' => ($seen_canonical >= AC_CANONICAL_BUILD),
6752 'HOST' => ($seen_canonical >= AC_CANONICAL_HOST),
6753 'TARGET' => ($seen_canonical >= AC_CANONICAL_TARGET),
6755 'LIBTOOL' => !! var ('LIBTOOL'),
6756 'NONLIBTOOL' => 1,
6757 %transform);
6759 if (! defined ($_ = $am_file_cache{$file}))
6760 {
6761 verb "reading $file";
6762 # Swallow the whole file.
6763 my $fc_file = new Automake::XFile "< $file";
6764 my $saved_dollar_slash = $/;
6765 undef $/;
6766 $_ = $fc_file->getline;
6767 $/ = $saved_dollar_slash;
6768 $fc_file->close;
6769 # Remove ##-comments.
6770 # Besides we don't need more than two consecutive new-lines.
6771 s/(?:$IGNORE_PATTERN|(?<=\n\n)\n+)//gom;
6772 # Remember the contents of the just-read file.
6773 $am_file_cache{$file} = $_;
6774 }
6776 # Substitute Automake template tokens.
6777 s/(?: % \?? [\w\-]+ %
6778 | \? !? [\w\-]+ \?
6779 )/transform($&, \%transform)/gex;
6780 # transform() may have added some ##%-comments to strip.
6781 # (we use '##%' instead of '##' so we can distinguish ##%##%##% from
6782 # ####### and do not remove the latter.)
6783 s/^[ \t]*(?:##%)+.*\n//gm;
6785 return $_;
6786 }
6789 # @PARAGRAPHS
6790 # &make_paragraphs ($MAKEFILE, [%TRANSFORM])
6791 # ------------------------------------------
6792 # Load a $MAKEFILE, apply the %TRANSFORM, and return it as a list of
6793 # paragraphs.
6794 sub make_paragraphs ($%)
6795 {
6796 my ($file, %transform) = @_;
6797 $transform{FIRST} = !$transformed_files{$file};
6798 $transformed_files{$file} = 1;
6800 my @lines = split /(?<!\\)\n/, preprocess_file ($file, %transform);
6801 my @res;
6803 while (defined ($_ = shift @lines))
6804 {
6805 my $paragraph = $_;
6806 # If we are a rule, eat as long as we start with a tab.
6807 if (/$RULE_PATTERN/smo)
6808 {
6809 while (defined ($_ = shift @lines) && $_ =~ /^\t/)
6810 {
6811 $paragraph .= "\n$_";
6812 }
6813 unshift (@lines, $_);
6814 }
6816 # If we are a comments, eat as much comments as you can.
6817 elsif (/$COMMENT_PATTERN/smo)
6818 {
6819 while (defined ($_ = shift @lines)
6820 && $_ =~ /$COMMENT_PATTERN/smo)
6821 {
6822 $paragraph .= "\n$_";
6823 }
6824 unshift (@lines, $_);
6825 }
6827 push @res, $paragraph;
6828 }
6830 return @res;
6831 }
6835 # ($COMMENT, $VARIABLES, $RULES)
6836 # &file_contents_internal ($IS_AM, $FILE, $WHERE, [%TRANSFORM])
6837 # -------------------------------------------------------------
6838 # Return contents of a file from $libdir/am, automatically skipping
6839 # macros or rules which are already known. $IS_AM iff the caller is
6840 # reading an Automake file (as opposed to the user's Makefile.am).
6841 sub file_contents_internal ($$$%)
6842 {
6843 my ($is_am, $file, $where, %transform) = @_;
6845 $where->set ($file);
6847 my $result_vars = '';
6848 my $result_rules = '';
6849 my $comment = '';
6850 my $spacing = '';
6852 # The following flags are used to track rules spanning across
6853 # multiple paragraphs.
6854 my $is_rule = 0; # 1 if we are processing a rule.
6855 my $discard_rule = 0; # 1 if the current rule should not be output.
6857 # We save the conditional stack on entry, and then check to make
6858 # sure it is the same on exit. This lets us conditionally include
6859 # other files.
6860 my @saved_cond_stack = @cond_stack;
6861 my $cond = new Automake::Condition (@cond_stack);
6863 foreach (make_paragraphs ($file, %transform))
6864 {
6865 # FIXME: no line number available.
6866 $where->set ($file);
6868 # Sanity checks.
6869 error $where, "blank line following trailing backslash:\n$_"
6870 if /\\$/;
6871 error $where, "comment following trailing backslash:\n$_"
6872 if /\\#/;
6874 if (/^$/)
6875 {
6876 $is_rule = 0;
6877 # Stick empty line before the incoming macro or rule.
6878 $spacing = "\n";
6879 }
6880 elsif (/$COMMENT_PATTERN/mso)
6881 {
6882 $is_rule = 0;
6883 # Stick comments before the incoming macro or rule.
6884 $comment = "$_\n";
6885 }
6887 # Handle inclusion of other files.
6888 elsif (/$INCLUDE_PATTERN/o)
6889 {
6890 if ($cond != FALSE)
6891 {
6892 my $file = ($is_am ? "$libdir/am/" : '') . $1;
6893 $where->push_context ("'$file' included from here");
6894 # N-ary '.=' fails.
6895 my ($com, $vars, $rules)
6896 = file_contents_internal ($is_am, $file, $where, %transform);
6897 $where->pop_context;
6898 $comment .= $com;
6899 $result_vars .= $vars;
6900 $result_rules .= $rules;
6901 }
6902 }
6904 # Handling the conditionals.
6905 elsif (/$IF_PATTERN/o)
6906 {
6907 $cond = cond_stack_if ($1, $2, $file);
6908 }
6909 elsif (/$ELSE_PATTERN/o)
6910 {
6911 $cond = cond_stack_else ($1, $2, $file);
6912 }
6913 elsif (/$ENDIF_PATTERN/o)
6914 {
6915 $cond = cond_stack_endif ($1, $2, $file);
6916 }
6918 # Handling rules.
6919 elsif (/$RULE_PATTERN/mso)
6920 {
6921 $is_rule = 1;
6922 $discard_rule = 0;
6923 # Separate relationship from optional actions: the first
6924 # `new-line tab" not preceded by backslash (continuation
6925 # line).
6926 my $paragraph = $_;
6927 /^(.*?)(?:(?<!\\)\n(\t.*))?$/s;
6928 my ($relationship, $actions) = ($1, $2 || '');
6930 # Separate targets from dependencies: the first colon.
6931 $relationship =~ /^([^:]+\S+) *: *(.*)$/som;
6932 my ($targets, $dependencies) = ($1, $2);
6933 # Remove the escaped new lines.
6934 # I don't know why, but I have to use a tmp $flat_deps.
6935 my $flat_deps = &flatten ($dependencies);
6936 my @deps = split (' ', $flat_deps);
6938 foreach (split (' ', $targets))
6939 {
6940 # FIXME: 1. We are not robust to people defining several targets
6941 # at once, only some of them being in %dependencies. The
6942 # actions from the targets in %dependencies are usually generated
6943 # from the content of %actions, but if some targets in $targets
6944 # are not in %dependencies the ELSE branch will output
6945 # a rule for all $targets (i.e. the targets which are both
6946 # in %dependencies and $targets will have two rules).
6948 # FIXME: 2. The logic here is not able to output a
6949 # multi-paragraph rule several time (e.g. for each condition
6950 # it is defined for) because it only knows the first paragraph.
6952 # FIXME: 3. We are not robust to people defining a subset
6953 # of a previously defined "multiple-target" rule. E.g.
6954 # 'foo:' after 'foo bar:'.
6956 # Output only if not in FALSE.
6957 if (defined $dependencies{$_} && $cond != FALSE)
6958 {
6959 &depend ($_, @deps);
6960 register_action ($_, $actions);
6961 }
6962 else
6963 {
6964 # Free-lance dependency. Output the rule for all the
6965 # targets instead of one by one.
6966 my @undefined_conds =
6967 Automake::Rule::define ($targets, $file,
6968 $is_am ? RULE_AUTOMAKE : RULE_USER,
6969 $cond, $where);
6970 for my $undefined_cond (@undefined_conds)
6971 {
6972 my $condparagraph = $paragraph;
6973 $condparagraph =~ s/^/$undefined_cond->subst_string/gme;
6974 $result_rules .= "$spacing$comment$condparagraph\n";
6975 }
6976 if (scalar @undefined_conds == 0)
6977 {
6978 # Remember to discard next paragraphs
6979 # if they belong to this rule.
6980 # (but see also FIXME: #2 above.)
6981 $discard_rule = 1;
6982 }
6983 $comment = $spacing = '';
6984 last;
6985 }
6986 }
6987 }
6989 elsif (/$ASSIGNMENT_PATTERN/mso)
6990 {
6991 my ($var, $type, $val) = ($1, $2, $3);
6992 error $where, "variable '$var' with trailing backslash"
6993 if /\\$/;
6995 $is_rule = 0;
6997 Automake::Variable::define ($var,
6998 $is_am ? VAR_AUTOMAKE : VAR_MAKEFILE,
6999 $type, $cond, $val, $comment, $where,
7000 VAR_ASIS)
7001 if $cond != FALSE;
7003 $comment = $spacing = '';
7004 }
7005 else
7006 {
7007 # This isn't an error; it is probably some tokens which
7008 # configure is supposed to replace, such as '@SET-MAKE@',
7009 # or some part of a rule cut by an if/endif.
7010 if (! $cond->false && ! ($is_rule && $discard_rule))
7011 {
7012 s/^/$cond->subst_string/gme;
7013 $result_rules .= "$spacing$comment$_\n";
7014 }
7015 $comment = $spacing = '';
7016 }
7017 }
7019 error ($where, @cond_stack ?
7020 "unterminated conditionals: @cond_stack" :
7021 "too many conditionals closed in include file")
7022 if "@saved_cond_stack" ne "@cond_stack";
7024 return ($comment, $result_vars, $result_rules);
7025 }
7028 # $CONTENTS
7029 # &file_contents ($BASENAME, $WHERE, [%TRANSFORM])
7030 # ------------------------------------------------
7031 # Return contents of a file from $libdir/am, automatically skipping
7032 # macros or rules which are already known.
7033 sub file_contents ($$%)
7034 {
7035 my ($basename, $where, %transform) = @_;
7036 my ($comments, $variables, $rules) =
7037 file_contents_internal (1, "$libdir/am/$basename.am", $where,
7038 %transform);
7039 return "$comments$variables$rules";
7040 }
7043 # @PREFIX
7044 # &am_primary_prefixes ($PRIMARY, $CAN_DIST, @PREFIXES)
7045 # -----------------------------------------------------
7046 # Find all variable prefixes that are used for install directories. A
7047 # prefix 'zar' qualifies iff:
7048 #
7049 # * 'zardir' is a variable.
7050 # * 'zar_PRIMARY' is a variable.
7051 #
7052 # As a side effect, it looks for misspellings. It is an error to have
7053 # a variable ending in a "reserved" suffix whose prefix is unknown, e.g.
7054 # "bni_PROGRAMS". However, unusual prefixes are allowed if a variable
7055 # of the same name (with "dir" appended) exists. For instance, if the
7056 # variable "zardir" is defined, then "zar_PROGRAMS" becomes valid.
7057 # This is to provide a little extra flexibility in those cases which
7058 # need it.
7059 sub am_primary_prefixes ($$@)
7060 {
7061 my ($primary, $can_dist, @prefixes) = @_;
7063 local $_;
7064 my %valid = map { $_ => 0 } @prefixes;
7065 $valid{'EXTRA'} = 0;
7066 foreach my $var (variables $primary)
7067 {
7068 # Automake is allowed to define variables that look like primaries
7069 # but which aren't. E.g. INSTALL_sh_DATA.
7070 # Autoconf can also define variables like INSTALL_DATA, so
7071 # ignore all configure variables (at least those which are not
7072 # redefined in Makefile.am).
7073 # FIXME: We should make sure that these variables are not
7074 # conditionally defined (or else adjust the condition below).
7075 my $def = $var->def (TRUE);
7076 next if $def && $def->owner != VAR_MAKEFILE;
7078 my $varname = $var->name;
7080 if ($varname =~ /^(nobase_)?(dist_|nodist_)?(.*)_[[:alnum:]]+$/)
7081 {
7082 my ($base, $dist, $X) = ($1 || '', $2 || '', $3 || '');
7083 if ($dist ne '' && ! $can_dist)
7084 {
7085 err_var ($var,
7086 "invalid variable '$varname': 'dist' is forbidden");
7087 }
7088 # Standard directories must be explicitly allowed.
7089 elsif (! defined $valid{$X} && exists $standard_prefix{$X})
7090 {
7091 err_var ($var,
7092 "'${X}dir' is not a legitimate directory " .
7093 "for '$primary'");
7094 }
7095 # A not explicitly valid directory is allowed if Xdir is defined.
7096 elsif (! defined $valid{$X} &&
7097 $var->requires_variables ("'$varname' is used", "${X}dir"))
7098 {
7099 # Nothing to do. Any error message has been output
7100 # by $var->requires_variables.
7101 }
7102 else
7103 {
7104 # Ensure all extended prefixes are actually used.
7105 $valid{"$base$dist$X"} = 1;
7106 }
7107 }
7108 else
7109 {
7110 prog_error "unexpected variable name: $varname";
7111 }
7112 }
7114 # Return only those which are actually defined.
7115 return sort grep { var ($_ . '_' . $primary) } keys %valid;
7116 }
7119 # Handle 'where_HOW' variable magic. Does all lookups, generates
7120 # install code, and possibly generates code to define the primary
7121 # variable. The first argument is the name of the .am file to munge,
7122 # the second argument is the primary variable (e.g. HEADERS), and all
7123 # subsequent arguments are possible installation locations.
7124 #
7125 # Returns list of [$location, $value] pairs, where
7126 # $value's are the values in all where_HOW variable, and $location
7127 # there associated location (the place here their parent variables were
7128 # defined).
7129 #
7130 # FIXME: this should be rewritten to be cleaner. It should be broken
7131 # up into multiple functions.
7132 #
7133 # Usage is: am_install_var (OPTION..., file, HOW, where...)
7134 sub am_install_var
7135 {
7136 my (@args) = @_;
7138 my $do_require = 1;
7139 my $can_dist = 0;
7140 my $default_dist = 0;
7141 while (@args)
7142 {
7143 if ($args[0] eq '-noextra')
7144 {
7145 $do_require = 0;
7146 }
7147 elsif ($args[0] eq '-candist')
7148 {
7149 $can_dist = 1;
7150 }
7151 elsif ($args[0] eq '-defaultdist')
7152 {
7153 $default_dist = 1;
7154 $can_dist = 1;
7155 }
7156 elsif ($args[0] !~ /^-/)
7157 {
7158 last;
7159 }
7160 shift (@args);
7161 }
7163 my ($file, $primary, @prefix) = @args;
7165 # Now that configure substitutions are allowed in where_HOW
7166 # variables, it is an error to actually define the primary. We
7167 # allow 'JAVA', as it is customarily used to mean the Java
7168 # interpreter. This is but one of several Java hacks. Similarly,
7169 # 'PYTHON' is customarily used to mean the Python interpreter.
7170 reject_var $primary, "'$primary' is an anachronism"
7171 unless $primary eq 'JAVA' || $primary eq 'PYTHON';
7173 # Get the prefixes which are valid and actually used.
7174 @prefix = am_primary_prefixes ($primary, $can_dist, @prefix);
7176 # If a primary includes a configure substitution, then the EXTRA_
7177 # form is required. Otherwise we can't properly do our job.
7178 my $require_extra;
7180 my @used = ();
7181 my @result = ();
7183 foreach my $X (@prefix)
7184 {
7185 my $nodir_name = $X;
7186 my $one_name = $X . '_' . $primary;
7187 my $one_var = var $one_name;
7189 my $strip_subdir = 1;
7190 # If subdir prefix should be preserved, do so.
7191 if ($nodir_name =~ /^nobase_/)
7192 {
7193 $strip_subdir = 0;
7194 $nodir_name =~ s/^nobase_//;
7195 }
7197 # If files should be distributed, do so.
7198 my $dist_p = 0;
7199 if ($can_dist)
7200 {
7201 $dist_p = (($default_dist && $nodir_name !~ /^nodist_/)
7202 || (! $default_dist && $nodir_name =~ /^dist_/));
7203 $nodir_name =~ s/^(dist|nodist)_//;
7204 }
7207 # Use the location of the currently processed variable.
7208 # We are not processing a particular condition, so pick the first
7209 # available.
7210 my $tmpcond = $one_var->conditions->one_cond;
7211 my $where = $one_var->rdef ($tmpcond)->location->clone;
7213 # Append actual contents of where_PRIMARY variable to
7214 # @result, skipping @substitutions@.
7215 foreach my $locvals ($one_var->value_as_list_recursive (location => 1))
7216 {
7217 my ($loc, $value) = @$locvals;
7218 # Skip configure substitutions.
7219 if ($value =~ /^\@.*\@$/)
7220 {
7221 if ($nodir_name eq 'EXTRA')
7222 {
7223 error ($where,
7224 "'$one_name' contains configure substitution, "
7225 . "but shouldn't");
7226 }
7227 # Check here to make sure variables defined in
7228 # configure.ac do not imply that EXTRA_PRIMARY
7229 # must be defined.
7230 elsif (! defined $configure_vars{$one_name})
7231 {
7232 $require_extra = $one_name
7233 if $do_require;
7234 }
7235 }
7236 else
7237 {
7238 # Strip any $(EXEEXT) suffix the user might have added, or this
7239 # will confuse &handle_source_transform and &check_canonical_spelling.
7240 # We'll add $(EXEEXT) back later anyway.
7241 # Do it here rather than in handle_programs so the uniquifying at the
7242 # end of this function works.
7243 ${$locvals}[1] =~ s/\$\(EXEEXT\)$//
7244 if $primary eq 'PROGRAMS';
7246 push (@result, $locvals);
7247 }
7248 }
7249 # A blatant hack: we rewrite each _PROGRAMS primary to include
7250 # EXEEXT.
7251 append_exeext { 1 } $one_name
7252 if $primary eq 'PROGRAMS';
7253 # "EXTRA" shouldn't be used when generating clean targets,
7254 # all, or install targets. We used to warn if EXTRA_FOO was
7255 # defined uselessly, but this was annoying.
7256 next
7257 if $nodir_name eq 'EXTRA';
7259 if ($nodir_name eq 'check')
7260 {
7261 push (@check, '$(' . $one_name . ')');
7262 }
7263 else
7264 {
7265 push (@used, '$(' . $one_name . ')');
7266 }
7268 # Is this to be installed?
7269 my $install_p = $nodir_name ne 'noinst' && $nodir_name ne 'check';
7271 # If so, with install-exec? (or install-data?).
7272 my $exec_p = ($nodir_name =~ /$EXEC_DIR_PATTERN/o);
7274 my $check_options_p = $install_p && !! option 'std-options';
7276 # Use the location of the currently processed variable as context.
7277 $where->push_context ("while processing '$one_name'");
7279 # The variable containing all files to distribute.
7280 my $distvar = "\$($one_name)";
7281 $distvar = shadow_unconditionally ($one_name, $where)
7282 if ($dist_p && $one_var->has_conditional_contents);
7284 # Singular form of $PRIMARY.
7285 (my $one_primary = $primary) =~ s/S$//;
7286 $output_rules .= &file_contents ($file, $where,
7287 PRIMARY => $primary,
7288 ONE_PRIMARY => $one_primary,
7289 DIR => $X,
7290 NDIR => $nodir_name,
7291 BASE => $strip_subdir,
7293 EXEC => $exec_p,
7294 INSTALL => $install_p,
7295 DIST => $dist_p,
7296 DISTVAR => $distvar,
7297 'CK-OPTS' => $check_options_p);
7298 }
7300 # The JAVA variable is used as the name of the Java interpreter.
7301 # The PYTHON variable is used as the name of the Python interpreter.
7302 if (@used && $primary ne 'JAVA' && $primary ne 'PYTHON')
7303 {
7304 # Define it.
7305 define_pretty_variable ($primary, TRUE, INTERNAL, @used);
7306 $output_vars .= "\n";
7307 }
7309 err_var ($require_extra,
7310 "'$require_extra' contains configure substitution,\n"
7311 . "but 'EXTRA_$primary' not defined")
7312 if ($require_extra && ! var ('EXTRA_' . $primary));
7314 # Push here because PRIMARY might be configure time determined.
7315 push (@all, '$(' . $primary . ')')
7316 if @used && $primary ne 'JAVA' && $primary ne 'PYTHON';
7318 # Make the result unique. This lets the user use conditionals in
7319 # a natural way, but still lets us program lazily -- we don't have
7320 # to worry about handling a particular object more than once.
7321 # We will keep only one location per object.
7322 my %result = ();
7323 for my $pair (@result)
7324 {
7325 my ($loc, $val) = @$pair;
7326 $result{$val} = $loc;
7327 }
7328 my @l = sort keys %result;
7329 return map { [$result{$_}->clone, $_] } @l;
7330 }
7333 ################################################################
7335 # Each key in this hash is the name of a directory holding a
7336 # Makefile.in. These variables are local to 'is_make_dir'.
7337 my %make_dirs = ();
7338 my $make_dirs_set = 0;
7340 sub is_make_dir
7341 {
7342 my ($dir) = @_;
7343 if (! $make_dirs_set)
7344 {
7345 foreach my $iter (@configure_input_files)
7346 {
7347 $make_dirs{dirname ($iter)} = 1;
7348 }
7349 # We also want to notice Makefile.in's.
7350 foreach my $iter (@other_input_files)
7351 {
7352 if ($iter =~ /Makefile\.in$/)
7353 {
7354 $make_dirs{dirname ($iter)} = 1;
7355 }
7356 }
7357 $make_dirs_set = 1;
7358 }
7359 return defined $make_dirs{$dir};
7360 }
7362 ################################################################
7364 # Find the aux dir. This should match the algorithm used by
7365 # ./configure. (See the Autoconf documentation for for
7366 # AC_CONFIG_AUX_DIR.)
7367 sub locate_aux_dir ()
7368 {
7369 if (! $config_aux_dir_set_in_configure_ac)
7370 {
7371 # The default auxiliary directory is the first
7372 # of ., .., or ../.. that contains install-sh.
7373 # Assume . if install-sh doesn't exist yet.
7374 for my $dir (qw (. .. ../..))
7375 {
7376 if (-f "$dir/install-sh")
7377 {
7378 $config_aux_dir = $dir;
7379 last;
7380 }
7381 }
7382 $config_aux_dir = '.' unless $config_aux_dir;
7383 }
7384 # Avoid unsightly '/.'s.
7385 $am_config_aux_dir =
7386 '$(top_srcdir)' . ($config_aux_dir eq '.' ? "" : "/$config_aux_dir");
7387 $am_config_aux_dir =~ s,/*$,,;
7388 }
7391 # &push_required_file ($DIR, $FILE, $FULLFILE)
7392 # --------------------------------------------------
7393 # Push the given file onto DIST_COMMON.
7394 sub push_required_file
7395 {
7396 my ($dir, $file, $fullfile) = @_;
7398 # If the file to be distributed is in the same directory of the
7399 # currently processed Makefile.am, then we want to distribute it
7400 # from this same Makefile.am.
7401 if ($dir eq $relative_dir)
7402 {
7403 push_dist_common ($file);
7404 }
7405 # This is needed to allow a construct in a non-top-level Makefile.am
7406 # to require a file in the build-aux directory (see at least the test
7407 # script 'test-driver-is-distributed.test'). This is related to the
7408 # automake bug#9546. Note that the use of $config_aux_dir instead
7409 # of $am_config_aux_dir here is deliberate and necessary.
7410 elsif ($dir eq $config_aux_dir)
7411 {
7412 push_dist_common ("$am_config_aux_dir/$file");
7413 }
7414 # FIXME: another spacial case, for AC_LIBOBJ/AC_LIBSOURCE support.
7415 # We probably need some refactoring of this function and its callers,
7416 # to have a more explicit and systematic handling of all the special
7417 # cases; but, since there are only two of them, this is low-priority
7418 # ATM.
7419 elsif ($config_libobj_dir && $dir eq $config_libobj_dir)
7420 {
7421 # Avoid unsightly '/.'s.
7422 my $am_config_libobj_dir =
7423 '$(top_srcdir)' .
7424 ($config_libobj_dir eq '.' ? "" : "/$config_libobj_dir");
7425 $am_config_libobj_dir =~ s|/*$||;
7426 push_dist_common ("$am_config_libobj_dir/$file");
7427 }
7428 elsif ($relative_dir eq '.' && ! &is_make_dir ($dir))
7429 {
7430 # If we are doing the topmost directory, and the file is in a
7431 # subdir which does not have a Makefile, then we distribute it
7432 # here.
7434 # If a required file is above the source tree, it is important
7435 # to prefix it with '$(srcdir)' so that no VPATH search is
7436 # performed. Otherwise problems occur with Make implementations
7437 # that rewrite and simplify rules whose dependencies are found in a
7438 # VPATH location. Here is an example with OSF1/Tru64 Make.
7439 #
7440 # % cat Makefile
7441 # VPATH = sub
7442 # distdir: ../a
7443 # echo ../a
7444 # % ls
7445 # Makefile a
7446 # % make
7447 # echo a
7448 # a
7449 #
7450 # Dependency '../a' was found in 'sub/../a', but this make
7451 # implementation simplified it as 'a'. (Note that the sub/
7452 # directory does not even exist.)
7453 #
7454 # This kind of VPATH rewriting seems hard to cancel. The
7455 # distdir.am hack against VPATH rewriting works only when no
7456 # simplification is done, i.e., for dependencies which are in
7457 # subdirectories, not in enclosing directories. Hence, in
7458 # the latter case we use a full path to make sure no VPATH
7459 # search occurs.
7460 $fullfile = '$(srcdir)/' . $fullfile
7461 if $dir =~ m,^\.\.(?:$|/),;
7463 push_dist_common ($fullfile);
7464 }
7465 else
7466 {
7467 prog_error "a Makefile in relative directory $relative_dir " .
7468 "can't add files in directory $dir to DIST_COMMON";
7469 }
7470 }
7473 # If a file name appears as a key in this hash, then it has already
7474 # been checked for. This allows us not to report the same error more
7475 # than once.
7476 my %required_file_not_found = ();
7478 # &required_file_check_or_copy ($WHERE, $DIRECTORY, $FILE)
7479 # --------------------------------------------------------
7480 # Verify that the file must exist in $DIRECTORY, or install it.
7481 sub required_file_check_or_copy ($$$)
7482 {
7483 my ($where, $dir, $file) = @_;
7485 my $fullfile = "$dir/$file";
7486 my $found_it = 0;
7487 my $dangling_sym = 0;
7489 if (-l $fullfile && ! -f $fullfile)
7490 {
7491 $dangling_sym = 1;
7492 }
7493 elsif (dir_has_case_matching_file ($dir, $file))
7494 {
7495 $found_it = 1;
7496 }
7498 # '--force-missing' only has an effect if '--add-missing' is
7499 # specified.
7500 return
7501 if $found_it && (! $add_missing || ! $force_missing);
7503 # If we've already looked for it, we're done. You might
7504 # wonder why we don't do this before searching for the
7505 # file. If we do that, then something like
7506 # AC_OUTPUT(subdir/foo foo) will fail to put foo.in into
7507 # DIST_COMMON.
7508 if (! $found_it)
7509 {
7510 return if defined $required_file_not_found{$fullfile};
7511 $required_file_not_found{$fullfile} = 1;
7512 }
7513 if ($dangling_sym && $add_missing)
7514 {
7515 unlink ($fullfile);
7516 }
7518 my $trailer = '';
7519 my $trailer2 = '';
7520 my $suppress = 0;
7522 # Only install missing files according to our desired
7523 # strictness level.
7524 my $message = "required file '$fullfile' not found";
7525 if ($add_missing)
7526 {
7527 if (-f "$libdir/$file")
7528 {
7529 $suppress = 1;
7531 # Install the missing file. Symlink if we
7532 # can, copy if we must. Note: delete the file
7533 # first, in case it is a dangling symlink.
7534 $message = "installing '$fullfile'";
7536 # The license file should not be volatile.
7537 if ($file eq "COPYING")
7538 {
7539 $message .= " using GNU General Public License v3 file";
7540 $trailer2 = "\n Consider adding the COPYING file"
7541 . " to the version control system"
7542 . "\n for your code, to avoid questions"
7543 . " about which license your project uses";
7544 }
7546 # Windows Perl will hang if we try to delete a
7547 # file that doesn't exist.
7548 unlink ($fullfile) if -f $fullfile;
7549 if ($symlink_exists && ! $copy_missing)
7550 {
7551 if (! symlink ("$libdir/$file", $fullfile)
7552 || ! -e $fullfile)
7553 {
7554 $suppress = 0;
7555 $trailer = "; error while making link: $!";
7556 }
7557 }
7558 elsif (system ('cp', "$libdir/$file", $fullfile))
7559 {
7560 $suppress = 0;
7561 $trailer = "\n error while copying";
7562 }
7563 set_dir_cache_file ($dir, $file);
7564 }
7565 }
7566 else
7567 {
7568 $trailer = "\n 'automake --add-missing' can install '$file'"
7569 if -f "$libdir/$file";
7570 }
7572 # If --force-missing was specified, and we have
7573 # actually found the file, then do nothing.
7574 return
7575 if $found_it && $force_missing;
7577 # If we couldn't install the file, but it is a target in
7578 # the Makefile, don't print anything. This allows files
7579 # like README, AUTHORS, or THANKS to be generated.
7580 return
7581 if !$suppress && rule $file;
7583 msg ($suppress ? 'note' : 'error', $where, "$message$trailer$trailer2");
7584 }
7587 # &require_file_internal ($WHERE, $MYSTRICT, $DIRECTORY, $QUEUE, @FILES)
7588 # ----------------------------------------------------------------------
7589 # Verify that the file must exist in $DIRECTORY, or install it.
7590 # $MYSTRICT is the strictness level at which this file becomes required.
7591 # Worker threads may queue up the action to be serialized by the master,
7592 # if $QUEUE is true
7593 sub require_file_internal ($$$@)
7594 {
7595 my ($where, $mystrict, $dir, $queue, @files) = @_;
7597 return
7598 unless $strictness >= $mystrict;
7600 foreach my $file (@files)
7601 {
7602 push_required_file ($dir, $file, "$dir/$file");
7603 if ($queue)
7604 {
7605 queue_required_file_check_or_copy ($required_conf_file_queue,
7606 QUEUE_CONF_FILE, $relative_dir,
7607 $where, $mystrict, @files);
7608 }
7609 else
7610 {
7611 required_file_check_or_copy ($where, $dir, $file);
7612 }
7613 }
7614 }
7616 # &require_file ($WHERE, $MYSTRICT, @FILES)
7617 # -----------------------------------------
7618 sub require_file ($$@)
7619 {
7620 my ($where, $mystrict, @files) = @_;
7621 require_file_internal ($where, $mystrict, $relative_dir, 0, @files);
7622 }
7624 # &require_file_with_macro ($COND, $MACRO, $MYSTRICT, @FILES)
7625 # -----------------------------------------------------------
7626 sub require_file_with_macro ($$$@)
7627 {
7628 my ($cond, $macro, $mystrict, @files) = @_;
7629 $macro = rvar ($macro) unless ref $macro;
7630 require_file ($macro->rdef ($cond)->location, $mystrict, @files);
7631 }
7633 # &require_libsource_with_macro ($COND, $MACRO, $MYSTRICT, @FILES)
7634 # ----------------------------------------------------------------
7635 # Require an AC_LIBSOURCEd file. If AC_CONFIG_LIBOBJ_DIR was called, it
7636 # must be in that directory. Otherwise expect it in the current directory.
7637 sub require_libsource_with_macro ($$$@)
7638 {
7639 my ($cond, $macro, $mystrict, @files) = @_;
7640 $macro = rvar ($macro) unless ref $macro;
7641 if ($config_libobj_dir)
7642 {
7643 require_file_internal ($macro->rdef ($cond)->location, $mystrict,
7644 $config_libobj_dir, 0, @files);
7645 }
7646 else
7647 {
7648 require_file ($macro->rdef ($cond)->location, $mystrict, @files);
7649 }
7650 }
7652 # &queue_required_file_check_or_copy ($QUEUE, $KEY, $DIR, $WHERE,
7653 # $MYSTRICT, @FILES)
7654 # ---------------------------------------------------------------
7655 sub queue_required_file_check_or_copy ($$$$@)
7656 {
7657 my ($queue, $key, $dir, $where, $mystrict, @files) = @_;
7658 my @serial_loc;
7659 if (ref $where)
7660 {
7661 @serial_loc = (QUEUE_LOCATION, $where->serialize ());
7662 }
7663 else
7664 {
7665 @serial_loc = (QUEUE_STRING, $where);
7666 }
7667 $queue->enqueue ($key, $dir, @serial_loc, $mystrict, 0 + @files, @files);
7668 }
7670 # &require_queued_file_check_or_copy ($QUEUE)
7671 # -------------------------------------------
7672 sub require_queued_file_check_or_copy ($)
7673 {
7674 my ($queue) = @_;
7675 my $where;
7676 my $dir = $queue->dequeue ();
7677 my $loc_key = $queue->dequeue ();
7678 if ($loc_key eq QUEUE_LOCATION)
7679 {
7680 $where = Automake::Location::deserialize ($queue);
7681 }
7682 elsif ($loc_key eq QUEUE_STRING)
7683 {
7684 $where = $queue->dequeue ();
7685 }
7686 else
7687 {
7688 prog_error "unexpected key $loc_key";
7689 }
7690 my $mystrict = $queue->dequeue ();
7691 my $nfiles = $queue->dequeue ();
7692 my @files;
7693 push @files, $queue->dequeue ()
7694 foreach (1 .. $nfiles);
7695 return
7696 unless $strictness >= $mystrict;
7697 foreach my $file (@files)
7698 {
7699 required_file_check_or_copy ($where, $config_aux_dir, $file);
7700 }
7701 }
7703 # &require_conf_file ($WHERE, $MYSTRICT, @FILES)
7704 # ----------------------------------------------
7705 # Looks in configuration path, as specified by AC_CONFIG_AUX_DIR.
7706 sub require_conf_file ($$@)
7707 {
7708 my ($where, $mystrict, @files) = @_;
7709 my $queue = defined $required_conf_file_queue ? 1 : 0;
7710 require_file_internal ($where, $mystrict, $config_aux_dir,
7711 $queue, @files);
7712 }
7715 # &require_conf_file_with_macro ($COND, $MACRO, $MYSTRICT, @FILES)
7716 # ----------------------------------------------------------------
7717 sub require_conf_file_with_macro ($$$@)
7718 {
7719 my ($cond, $macro, $mystrict, @files) = @_;
7720 require_conf_file (rvar ($macro)->rdef ($cond)->location,
7721 $mystrict, @files);
7722 }
7724 ################################################################
7726 # &require_build_directory ($DIRECTORY)
7727 # -------------------------------------
7728 # Emit rules to create $DIRECTORY if needed, and return
7729 # the file that any target requiring this directory should be made
7730 # dependent upon.
7731 # We don't want to emit the rule twice, and want to reuse it
7732 # for directories with equivalent names (e.g., 'foo/bar' and './foo//bar').
7733 sub require_build_directory ($)
7734 {
7735 my $directory = shift;
7737 return $directory_map{$directory} if exists $directory_map{$directory};
7739 my $cdir = File::Spec->canonpath ($directory);
7741 if (exists $directory_map{$cdir})
7742 {
7743 my $stamp = $directory_map{$cdir};
7744 $directory_map{$directory} = $stamp;
7745 return $stamp;
7746 }
7748 my $dirstamp = "$cdir/\$(am__dirstamp)";
7750 $directory_map{$directory} = $dirstamp;
7751 $directory_map{$cdir} = $dirstamp;
7753 # Set a variable for the dirstamp basename.
7754 define_pretty_variable ('am__dirstamp', TRUE, INTERNAL,
7755 '$(am__leading_dot)dirstamp');
7757 # Directory must be removed by 'make distclean'.
7758 $clean_files{$dirstamp} = DIST_CLEAN;
7760 $output_rules .= ("$dirstamp:\n"
7761 . "\t\@\$(MKDIR_P) $directory\n"
7762 . "\t\@: > $dirstamp\n");
7764 return $dirstamp;
7765 }
7767 # &require_build_directory_maybe ($FILE)
7768 # --------------------------------------
7769 # If $FILE lies in a subdirectory, emit a rule to create this
7770 # directory and return the file that $FILE should be made
7771 # dependent upon. Otherwise, just return the empty string.
7772 sub require_build_directory_maybe ($)
7773 {
7774 my $file = shift;
7775 my $directory = dirname ($file);
7777 if ($directory ne '.')
7778 {
7779 return require_build_directory ($directory);
7780 }
7781 else
7782 {
7783 return '';
7784 }
7785 }
7787 ################################################################
7789 # Push a list of files onto dist_common.
7790 sub push_dist_common
7791 {
7792 prog_error "push_dist_common run after handle_dist"
7793 if $handle_dist_run;
7794 Automake::Variable::define ('DIST_COMMON', VAR_AUTOMAKE, '+', TRUE, "@_",
7795 '', INTERNAL, VAR_PRETTY);
7796 }
7799 ################################################################
7801 # generate_makefile ($MAKEFILE_AM, $MAKEFILE_IN)
7802 # ----------------------------------------------
7803 # Generate a Makefile.in given the name of the corresponding Makefile and
7804 # the name of the file output by config.status.
7805 sub generate_makefile ($$)
7806 {
7807 my ($makefile_am, $makefile_in) = @_;
7809 # Reset all the Makefile.am related variables.
7810 initialize_per_input;
7812 # AUTOMAKE_OPTIONS can contains -W flags to disable or enable
7813 # warnings for this file. So hold any warning issued before
7814 # we have processed AUTOMAKE_OPTIONS.
7815 buffer_messages ('warning');
7817 # $OUTPUT is encoded. If it contains a ":" then the first element
7818 # is the real output file, and all remaining elements are input
7819 # files. We don't scan or otherwise deal with these input files,
7820 # other than to mark them as dependencies. See
7821 # &scan_autoconf_files for details.
7822 my ($makefile, @inputs) = split (/:/, $output_files{$makefile_in});
7824 $relative_dir = dirname ($makefile);
7826 read_main_am_file ($makefile_am, $makefile_in);
7827 if (handle_options)
7828 {
7829 # Process buffered warnings.
7830 flush_messages;
7831 # Fatal error. Just return, so we can continue with next file.
7832 return;
7833 }
7834 # Process buffered warnings.
7835 flush_messages;
7837 # There are a few install-related variables that you should not define.
7838 foreach my $var ('PRE_INSTALL', 'POST_INSTALL', 'NORMAL_INSTALL')
7839 {
7840 my $v = var $var;
7841 if ($v)
7842 {
7843 my $def = $v->def (TRUE);
7844 prog_error "$var not defined in condition TRUE"
7845 unless $def;
7846 reject_var $var, "'$var' should not be defined"
7847 if $def->owner != VAR_AUTOMAKE;
7848 }
7849 }
7851 # Catch some obsolete variables.
7852 msg_var ('obsolete', 'INCLUDES',
7853 "'INCLUDES' is the old name for 'AM_CPPFLAGS' (or '*_CPPFLAGS')")
7854 if var ('INCLUDES');
7856 # Must do this after reading .am file.
7857 define_variable ('subdir', $relative_dir, INTERNAL);
7859 # If DIST_SUBDIRS is defined, make sure SUBDIRS is, so that
7860 # recursive rules are enabled.
7861 define_pretty_variable ('SUBDIRS', TRUE, INTERNAL, '')
7862 if var 'DIST_SUBDIRS' && ! var 'SUBDIRS';
7864 # Check first, because we might modify some state.
7865 check_gnu_standards;
7866 check_gnits_standards;
7868 handle_configure ($makefile_am, $makefile_in, $makefile, @inputs);
7869 handle_gettext;
7870 handle_libraries;
7871 handle_ltlibraries;
7872 handle_programs;
7873 handle_scripts;
7875 handle_silent;
7877 # These must be run after all the sources are scanned. They
7878 # use variables defined by &handle_libraries, &handle_ltlibraries,
7879 # or &handle_programs.
7880 handle_compile;
7881 handle_languages;
7882 handle_libtool;
7884 # Variables used by distdir.am and tags.am.
7885 define_pretty_variable ('SOURCES', TRUE, INTERNAL, @sources);
7886 if (! option 'no-dist')
7887 {
7888 define_pretty_variable ('DIST_SOURCES', TRUE, INTERNAL, @dist_sources);
7889 }
7891 handle_texinfo;
7892 handle_emacs_lisp;
7893 handle_python;
7894 handle_java;
7895 handle_man_pages;
7896 handle_data;
7897 handle_headers;
7898 handle_subdirs;
7899 handle_user_recursion;
7900 handle_tags;
7901 handle_minor_options;
7902 # Must come after handle_programs so that %known_programs is up-to-date.
7903 handle_tests;
7905 # This must come after most other rules.
7906 handle_dist;
7908 handle_footer;
7909 do_check_merge_target;
7910 handle_all ($makefile);
7912 # FIXME: Gross!
7913 if (var ('lib_LTLIBRARIES') && var ('bin_PROGRAMS'))
7914 {
7915 $output_rules .= "install-binPROGRAMS: install-libLTLIBRARIES\n\n";
7916 }
7917 if (var ('nobase_lib_LTLIBRARIES') && var ('bin_PROGRAMS'))
7918 {
7919 $output_rules .= "install-binPROGRAMS: install-nobase_libLTLIBRARIES\n\n";
7920 }
7922 handle_install;
7923 handle_clean ($makefile);
7924 handle_factored_dependencies;
7926 # Comes last, because all the above procedures may have
7927 # defined or overridden variables.
7928 $output_vars .= output_variables;
7930 check_typos;
7932 if ($exit_code != 0)
7933 {
7934 verb "not writing $makefile_in because of earlier errors";
7935 return;
7936 }
7938 my $am_relative_dir = dirname ($makefile_am);
7939 mkdir ($am_relative_dir, 0755) if ! -d $am_relative_dir;
7941 # We make sure that 'all:' is the first target.
7942 my $output =
7943 "$output_vars$output_all$output_header$output_rules$output_trailer";
7945 # Decide whether we must update the output file or not.
7946 # We have to update in the following situations.
7947 # * $force_generation is set.
7948 # * any of the output dependencies is younger than the output
7949 # * the contents of the output is different (this can happen
7950 # if the project has been populated with a file listed in
7951 # @common_files since the last run).
7952 # Output's dependencies are split in two sets:
7953 # * dependencies which are also configure dependencies
7954 # These do not change between each Makefile.am
7955 # * other dependencies, specific to the Makefile.am being processed
7956 # (such as the Makefile.am itself, or any Makefile fragment
7957 # it includes).
7958 my $timestamp = mtime $makefile_in;
7959 if (! $force_generation
7960 && $configure_deps_greatest_timestamp < $timestamp
7961 && $output_deps_greatest_timestamp < $timestamp
7962 && $output eq contents ($makefile_in))
7963 {
7964 verb "$makefile_in unchanged";
7965 # No need to update.
7966 return;
7967 }
7969 if (-e $makefile_in)
7970 {
7971 unlink ($makefile_in)
7972 or fatal "cannot remove $makefile_in: $!";
7973 }
7975 my $gm_file = new Automake::XFile "> $makefile_in";
7976 verb "creating $makefile_in";
7977 print $gm_file $output;
7978 }
7980 ################################################################
7985 ################################################################
7987 # Helper function for usage().
7988 sub print_autodist_files (@)
7989 {
7990 my @lcomm = sort (&uniq (@_));
7992 my @four;
7993 format USAGE_FORMAT =
7994 @<<<<<<<<<<<<<<<< @<<<<<<<<<<<<<<<< @<<<<<<<<<<<<<<<< @<<<<<<<<<<<<<<<<
7995 $four[0], $four[1], $four[2], $four[3]
7996 .
7997 local $~ = "USAGE_FORMAT";
7999 my $cols = 4;
8000 my $rows = int(@lcomm / $cols);
8001 my $rest = @lcomm % $cols;
8003 if ($rest)
8004 {
8005 $rows++;
8006 }
8007 else
8008 {
8009 $rest = $cols;
8010 }
8012 for (my $y = 0; $y < $rows; $y++)
8013 {
8014 @four = ("", "", "", "");
8015 for (my $x = 0; $x < $cols; $x++)
8016 {
8017 last if $y + 1 == $rows && $x == $rest;
8019 my $idx = (($x > $rest)
8020 ? ($rows * $rest + ($rows - 1) * ($x - $rest))
8021 : ($rows * $x));
8023 $idx += $y;
8024 $four[$x] = $lcomm[$idx];
8025 }
8026 write;
8027 }
8028 }
8031 # Print usage information.
8032 sub usage ()
8033 {
8034 print "Usage: $0 [OPTION]... [Makefile]...
8036 Generate Makefile.in for configure from Makefile.am.
8038 Operation modes:
8039 --help print this help, then exit
8040 --version print version number, then exit
8041 -v, --verbose verbosely list files processed
8042 --no-force only update Makefile.in's that are out of date
8043 -W, --warnings=CATEGORY report the warnings falling in CATEGORY
8045 Dependency tracking:
8046 -i, --ignore-deps disable dependency tracking code
8047 --include-deps enable dependency tracking code
8049 Flavors:
8050 --foreign set strictness to foreign
8051 --gnits set strictness to gnits
8052 --gnu set strictness to gnu
8054 Library files:
8055 -a, --add-missing add missing standard files to package
8056 --libdir=DIR set directory storing library files
8057 --print-libdir print directory storing library files
8058 -c, --copy with -a, copy missing files (default is symlink)
8059 -f, --force-missing force update of standard files
8061 ";
8062 Automake::ChannelDefs::usage;
8064 print "\nFiles automatically distributed if found " .
8065 "(always):\n";
8066 print_autodist_files @common_files;
8067 print "\nFiles automatically distributed if found " .
8068 "(under certain conditions):\n";
8069 print_autodist_files @common_sometimes;
8071 print '
8072 Report bugs to <@PACKAGE_BUGREPORT@>.
8073 GNU Automake home page: <@PACKAGE_URL@>.
8074 General help using GNU software: <http://www.gnu.org/gethelp/>.
8075 ';
8077 # --help always returns 0 per GNU standards.
8078 exit 0;
8079 }
8082 # &version ()
8083 # -----------
8084 # Print version information
8085 sub version ()
8086 {
8087 print <<EOF;
8088 automake (GNU $PACKAGE) $VERSION
8089 Copyright (C) $RELEASE_YEAR Free Software Foundation, Inc.
8090 License GPLv2+: GNU GPL version 2 or later <http://gnu.org/licenses/gpl-2.0.html>
8091 This is free software: you are free to change and redistribute it.
8092 There is NO WARRANTY, to the extent permitted by law.
8094 Written by Tom Tromey <tromey\@redhat.com>
8095 and Alexandre Duret-Lutz <adl\@gnu.org>.
8096 EOF
8097 # --version always returns 0 per GNU standards.
8098 exit 0;
8099 }
8101 ################################################################
8103 # Parse command line.
8104 sub parse_arguments ()
8105 {
8106 my $strict = 'gnu';
8107 my $ignore_deps = 0;
8108 my @warnings = ();
8110 my %cli_options =
8111 (
8112 'version' => \&version,
8113 'help' => \&usage,
8114 'libdir=s' => \$libdir,
8115 'print-libdir' => sub { print "$libdir\n"; exit 0; },
8116 'gnu' => sub { $strict = 'gnu'; },
8117 'gnits' => sub { $strict = 'gnits'; },
8118 'foreign' => sub { $strict = 'foreign'; },
8119 'include-deps' => sub { $ignore_deps = 0; },
8120 'i|ignore-deps' => sub { $ignore_deps = 1; },
8121 'no-force' => sub { $force_generation = 0; },
8122 'f|force-missing' => \$force_missing,
8123 'a|add-missing' => \$add_missing,
8124 'c|copy' => \$copy_missing,
8125 'v|verbose' => sub { setup_channel 'verb', silent => 0; },
8126 'W|warnings=s' => \@warnings,
8127 );
8129 use Automake::Getopt ();
8130 Automake::Getopt::parse_options %cli_options;
8132 set_strictness ($strict);
8133 my $cli_where = new Automake::Location;
8134 set_global_option ('no-dependencies', $cli_where) if $ignore_deps;
8135 for my $warning (@warnings)
8136 {
8137 &parse_warnings ('-W', $warning);
8138 }
8140 return unless @ARGV;
8142 my $errspec = 0;
8143 foreach my $arg (@ARGV)
8144 {
8145 fatal ("empty argument\nTry '$0 --help' for more information")
8146 if ($arg eq '');
8148 # Handle $local:$input syntax.
8149 my ($local, @rest) = split (/:/, $arg);
8150 @rest = ("$local.in",) unless @rest;
8151 my $input = locate_am @rest;
8152 if ($input)
8153 {
8154 push @input_files, $input;
8155 $output_files{$input} = join (':', ($local, @rest));
8156 }
8157 else
8158 {
8159 error "no Automake input file found for '$arg'";
8160 $errspec = 1;
8161 }
8162 }
8163 fatal "no input file found among supplied arguments"
8164 if $errspec && ! @input_files;
8165 }
8168 # handle_makefile ($MAKEFILE_IN)
8169 # ------------------------------
8170 # Deal with $MAKEFILE_IN.
8171 sub handle_makefile ($)
8172 {
8173 my ($file) = @_;
8174 ($am_file = $file) =~ s/\.in$//;
8175 if (! -f ($am_file . '.am'))
8176 {
8177 error "'$am_file.am' does not exist";
8178 }
8179 else
8180 {
8181 # Any warning setting now local to this Makefile.am.
8182 dup_channel_setup;
8184 generate_makefile ($am_file . '.am', $file);
8186 # Back out any warning setting.
8187 drop_channel_setup;
8188 }
8189 }
8191 # handle_makefiles_serial ()
8192 # --------------------------
8193 # Deal with all makefiles, without threads.
8194 sub handle_makefiles_serial ()
8195 {
8196 foreach my $file (@input_files)
8197 {
8198 handle_makefile ($file);
8199 }
8200 }
8202 # get_number_of_threads ()
8203 # ------------------------
8204 # Logic for deciding how many worker threads to use.
8205 sub get_number_of_threads
8206 {
8207 my $nthreads = $ENV{'AUTOMAKE_JOBS'} || 0;
8209 $nthreads = 0
8210 unless $nthreads =~ /^[0-9]+$/;
8212 # It doesn't make sense to use more threads than makefiles,
8213 my $max_threads = @input_files;
8215 if ($nthreads > $max_threads)
8216 {
8217 $nthreads = $max_threads;
8218 }
8219 return $nthreads;
8220 }
8222 # handle_makefiles_threaded ($NTHREADS)
8223 # -------------------------------------
8224 # Deal with all makefiles, using threads. The general strategy is to
8225 # spawn NTHREADS worker threads, dispatch makefiles to them, and let the
8226 # worker threads push back everything that needs serialization:
8227 # * warning and (normal) error messages, for stable stderr output
8228 # order and content (avoiding duplicates, for example),
8229 # * races when installing aux files (and respective messages),
8230 # * races when collecting aux files for distribution.
8231 #
8232 # The latter requires that the makefile that deals with the aux dir
8233 # files be handled last, done by the master thread.
8234 sub handle_makefiles_threaded ($)
8235 {
8236 my ($nthreads) = @_;
8238 # The file queue distributes all makefiles, the message queues
8239 # collect all serializations needed for respective files.
8240 my $file_queue = Thread::Queue->new;
8241 my %msg_queues;
8242 foreach my $file (@input_files)
8243 {
8244 $msg_queues{$file} = Thread::Queue->new;
8245 }
8247 verb "spawning $nthreads worker threads";
8248 my @threads = (1 .. $nthreads);
8249 foreach my $t (@threads)
8250 {
8251 $t = threads->new (sub
8252 {
8253 while (my $file = $file_queue->dequeue)
8254 {
8255 verb "handling $file";
8256 my $queue = $msg_queues{$file};
8257 setup_channel_queue ($queue, QUEUE_MESSAGE);
8258 $required_conf_file_queue = $queue;
8259 handle_makefile ($file);
8260 $queue->enqueue (undef);
8261 setup_channel_queue (undef, undef);
8262 $required_conf_file_queue = undef;
8263 }
8264 return $exit_code;
8265 });
8266 }
8268 # Queue all makefiles.
8269 verb "queuing " . @input_files . " input files";
8270 $file_queue->enqueue (@input_files, (undef) x @threads);
8272 # Collect and process serializations.
8273 foreach my $file (@input_files)
8274 {
8275 verb "dequeuing messages for " . $file;
8276 reset_local_duplicates ();
8277 my $queue = $msg_queues{$file};
8278 while (my $key = $queue->dequeue)
8279 {
8280 if ($key eq QUEUE_MESSAGE)
8281 {
8282 pop_channel_queue ($queue);
8283 }
8284 elsif ($key eq QUEUE_CONF_FILE)
8285 {
8286 require_queued_file_check_or_copy ($queue);
8287 }
8288 else
8289 {
8290 prog_error "unexpected key $key";
8291 }
8292 }
8293 }
8295 foreach my $t (@threads)
8296 {
8297 my @exit_thread = $t->join;
8298 $exit_code = $exit_thread[0]
8299 if ($exit_thread[0] > $exit_code);
8300 }
8301 }
8303 ################################################################
8305 # Parse the WARNINGS environment variable.
8306 parse_WARNINGS;
8308 # Parse command line.
8309 parse_arguments;
8311 $configure_ac = require_configure_ac;
8313 # Do configure.ac scan only once.
8314 scan_autoconf_files;
8316 if (! @input_files)
8317 {
8318 my $msg = '';
8319 $msg = "\nDid you forget AC_CONFIG_FILES([Makefile]) in $configure_ac?"
8320 if -f 'Makefile.am';
8321 fatal ("no 'Makefile.am' found for any configure output$msg");
8322 }
8324 my $nthreads = get_number_of_threads ();
8326 if ($perl_threads && $nthreads >= 1)
8327 {
8328 handle_makefiles_threaded ($nthreads);
8329 }
8330 else
8331 {
8332 handle_makefiles_serial ();
8333 }
8335 exit $exit_code;
8338 ### Setup "GNU" style for perl-mode and cperl-mode.
8339 ## Local Variables:
8340 ## perl-indent-level: 2
8341 ## perl-continued-statement-offset: 2
8342 ## perl-continued-brace-offset: 0
8343 ## perl-brace-offset: 0
8344 ## perl-brace-imaginary-offset: 0
8345 ## perl-label-offset: -2
8346 ## cperl-indent-level: 2
8347 ## cperl-brace-offset: 0
8348 ## cperl-continued-brace-offset: 0
8349 ## cperl-label-offset: -2
8350 ## cperl-extra-newline-before-brace: t
8351 ## cperl-merge-trailing-else: nil
8352 ## cperl-continued-statement-offset: 2
8353 ## End: