| blob | 97e0cb70537b357d99e515a9f8069701caaefe38 |
1 #!@PERL@ -w
2 # -*- perl -*-
3 # @configure_input@
5 eval 'case $# in 0) exec @PERL@ -S "$0";; *) exec @PERL@ -S "$0" "$@";; esac'
6 if 0;
8 # automake - create Makefile.in from Makefile.am
9 # Copyright (C) 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002,
10 # 2003, 2004 Free Software Foundation, Inc.
12 # This program is free software; you can redistribute it and/or modify
13 # it under the terms of the GNU General Public License as published by
14 # the Free Software Foundation; either version 2, or (at your option)
15 # any later version.
17 # This program is distributed in the hope that it will be useful,
18 # but WITHOUT ANY WARRANTY; without even the implied warranty of
19 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
20 # GNU General Public License for more details.
22 # You should have received a copy of the GNU General Public License
23 # along with this program; if not, write to the Free Software
24 # Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
25 # 02111-1307, USA.
27 # Originally written by David Mackenzie <djm@gnu.ai.mit.edu>.
28 # Perl reimplementation by Tom Tromey <tromey@redhat.com>.
30 package Language;
32 BEGIN
33 {
34 my $perllibdir = $ENV{'perllibdir'} || '@datadir@/@PACKAGE@-@APIVERSION@';
35 unshift @INC, (split '@PATH_SEPARATOR@', $perllibdir);
37 # Override SHELL. This is required on DJGPP so that system() uses
38 # bash, not COMMAND.COM which doesn't quote arguments properly.
39 # Other systems aren't expected to use $SHELL when Automake
40 # runs, but it should be safe to drop the `if DJGPP' guard if
41 # it turns up other systems need the same thing. After all,
42 # if SHELL is used, ./configure's SHELL is always better than
43 # the user's SHELL (which may be something like tcsh).
44 $ENV{'SHELL'} = '@SHELL@' if exists $ENV{'DJGPP'};
45 }
47 use Automake::Struct;
48 struct (# Short name of the language (c, f77...).
49 'name' => "\$",
50 # Nice name of the language (C, Fortran 77...).
51 'Name' => "\$",
53 # List of configure variables which must be defined.
54 'config_vars' => '@',
56 'ansi' => "\$",
57 # `pure' is `1' or `'. A `pure' language is one where, if
58 # all the files in a directory are of that language, then we
59 # do not require the C compiler or any code to call it.
60 'pure' => "\$",
62 'autodep' => "\$",
64 # Name of the compiling variable (COMPILE).
65 'compiler' => "\$",
66 # Content of the compiling variable.
67 'compile' => "\$",
68 # Flag to require compilation without linking (-c).
69 'compile_flag' => "\$",
70 'extensions' => '@',
71 # A subroutine to compute a list of possible extensions of
72 # the product given the input extensions.
73 # (defaults to a subroutine which returns ('.$(OBJEXT)', '.lo'))
74 'output_extensions' => "\$",
75 # A list of flag variables used in 'compile'.
76 # (defaults to [])
77 'flags' => "@",
79 # Any tag to pass to libtool while compiling.
80 'libtool_tag' => "\$",
82 # The file to use when generating rules for this language.
83 # The default is 'depend2'.
84 'rule_file' => "\$",
86 # Name of the linking variable (LINK).
87 'linker' => "\$",
88 # Content of the linking variable.
89 'link' => "\$",
91 # Name of the linker variable (LD).
92 'lder' => "\$",
93 # Content of the linker variable ($(CC)).
94 'ld' => "\$",
96 # Flag to specify the output file (-o).
97 'output_flag' => "\$",
98 '_finish' => "\$",
100 # This is a subroutine which is called whenever we finally
101 # determine the context in which a source file will be
102 # compiled.
103 '_target_hook' => "\$");
106 sub finish ($)
107 {
108 my ($self) = @_;
109 if (defined $self->_finish)
110 {
111 &{$self->_finish} ();
112 }
113 }
115 sub target_hook ($$$$)
116 {
117 my ($self) = @_;
118 if (defined $self->_target_hook)
119 {
120 &{$self->_target_hook} (@_);
121 }
122 }
124 package Automake;
126 use strict;
127 use Automake::Config;
128 use Automake::General;
129 use Automake::XFile;
130 use Automake::Channels;
131 use Automake::ChannelDefs;
132 use Automake::Configure_ac;
133 use Automake::FileUtils;
134 use Automake::Location;
135 use Automake::Condition qw/TRUE FALSE/;
136 use Automake::DisjConditions;
137 use Automake::Options;
138 use Automake::Version;
139 use Automake::Variable;
140 use Automake::VarDef;
141 use Automake::Rule;
142 use Automake::RuleDef;
143 use Automake::Wrap 'makefile_wrap';
144 use File::Basename;
145 use Carp;
147 ## ----------- ##
148 ## Constants. ##
149 ## ----------- ##
151 # Some regular expressions. One reason to put them here is that it
152 # makes indentation work better in Emacs.
154 # Writing singled-quoted-$-terminated regexes is a pain because
155 # perl-mode thinks of $' as the ${'} variable (instead of a $ followed
156 # by a closing quote. Letting perl-mode think the quote is not closed
157 # leads to all sort of misindentations. On the other hand, defining
158 # regexes as double-quoted strings is far less readable. So usually
159 # we will write:
160 #
161 # $REGEX = '^regex_value' . "\$";
163 my $IGNORE_PATTERN = '^\s*##([^#\n].*)?\n';
164 my $WHITE_PATTERN = '^\s*' . "\$";
165 my $COMMENT_PATTERN = '^#';
166 my $TARGET_PATTERN='[$a-zA-Z_.@%][-.a-zA-Z0-9_(){}/$+@%]*';
167 # A rule has three parts: a list of targets, a list of dependencies,
168 # and optionally actions.
169 my $RULE_PATTERN =
170 "^($TARGET_PATTERN(?:(?:\\\\\n|\\s)+$TARGET_PATTERN)*) *:([^=].*|)\$";
172 # Only recognize leading spaces, not leading tabs. If we recognize
173 # leading tabs here then we need to make the reader smarter, because
174 # otherwise it will think rules like `foo=bar; \' are errors.
175 my $ASSIGNMENT_PATTERN = '^ *([^ \t=:+]*)\s*([:+]?)=\s*(.*)' . "\$";
176 # This pattern recognizes a Gnits version id and sets $1 if the
177 # release is an alpha release. We also allow a suffix which can be
178 # used to extend the version number with a "fork" identifier.
179 my $GNITS_VERSION_PATTERN = '\d+\.\d+([a-z]|\.\d+)?(-[A-Za-z0-9]+)?';
181 my $IF_PATTERN = '^if\s+(!?)\s*([A-Za-z][A-Za-z0-9_]*)\s*(?:#.*)?' . "\$";
182 my $ELSE_PATTERN =
183 '^else(?:\s+(!?)\s*([A-Za-z][A-Za-z0-9_]*))?\s*(?:#.*)?' . "\$";
184 my $ENDIF_PATTERN =
185 '^endif(?:\s+(!?)\s*([A-Za-z][A-Za-z0-9_]*))?\s*(?:#.*)?' . "\$";
186 my $PATH_PATTERN = '(\w|[/.-])+';
187 # This will pass through anything not of the prescribed form.
188 my $INCLUDE_PATTERN = ('^include\s+'
189 . '((\$\(top_srcdir\)/' . $PATH_PATTERN . ')'
190 . '|(\$\(srcdir\)/' . $PATH_PATTERN . ')'
191 . '|([^/\$]' . $PATH_PATTERN . '))\s*(#.*)?' . "\$");
193 # Match `-d' as a command-line argument in a string.
194 my $DASH_D_PATTERN = "(^|\\s)-d(\\s|\$)";
195 # Directories installed during 'install-exec' phase.
196 my $EXEC_DIR_PATTERN =
197 '^(?:bin|sbin|libexec|sysconf|localstate|lib|pkglib|.*exec.*)' . "\$";
199 # Values for AC_CANONICAL_*
200 use constant AC_CANONICAL_HOST => 1;
201 use constant AC_CANONICAL_SYSTEM => 2;
203 # Values indicating when something should be cleaned.
204 use constant MOSTLY_CLEAN => 0;
205 use constant CLEAN => 1;
206 use constant DIST_CLEAN => 2;
207 use constant MAINTAINER_CLEAN => 3;
209 # Libtool files.
210 my @libtool_files = qw(ltmain.sh config.guess config.sub);
211 # ltconfig appears here for compatibility with old versions of libtool.
212 my @libtool_sometimes = qw(ltconfig ltcf-c.sh ltcf-cxx.sh ltcf-gcj.sh);
214 # Commonly found files we look for and automatically include in
215 # DISTFILES.
216 my @common_files =
217 (qw(ABOUT-GNU ABOUT-NLS AUTHORS BACKLOG COPYING COPYING.DOC COPYING.LIB
218 COPYING.LESSER ChangeLog INSTALL NEWS README THANKS TODO
219 ansi2knr.1 ansi2knr.c compile config.guess config.rpath config.sub
220 depcomp elisp-comp install-sh libversion.in mdate-sh missing
221 mkinstalldirs py-compile texinfo.tex ylwrap),
222 @libtool_files, @libtool_sometimes);
224 # Commonly used files we auto-include, but only sometimes. This list
225 # is used for the --help output only.
226 my @common_sometimes =
227 qw(aclocal.m4 acconfig.h config.h.top config.h.bot configure
228 configure.ac configure.in stamp-vti);
230 # Standard directories from the GNU Coding Standards, and additional
231 # pkg* directories from Automake. Stored in a hash for fast member check.
232 my %standard_prefix =
233 map { $_ => 1 } (qw(bin data exec include info lib libexec lisp
234 localstate man man1 man2 man3 man4 man5 man6
235 man7 man8 man9 oldinclude pkgdatadir
236 pkgincludedir pkglibdir sbin sharedstate
237 sysconf));
239 # Copyright on generated Makefile.ins.
240 my $gen_copyright = "\
241 # Copyright (C) 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002,
242 # 2003, 2004 Free Software Foundation, Inc.
243 # This Makefile.in is free software; the Free Software Foundation
244 # gives unlimited permission to copy and/or distribute it,
245 # with or without modifications, as long as this notice is preserved.
247 # This program is distributed in the hope that it will be useful,
248 # but WITHOUT ANY WARRANTY, to the extent permitted by law; without
249 # even the implied warranty of MERCHANTABILITY or FITNESS FOR A
250 # PARTICULAR PURPOSE.
251 ";
253 # These constants are returned by lang_*_rewrite functions.
254 # LANG_SUBDIR means that the resulting object file should be in a
255 # subdir if the source file is. In this case the file name cannot
256 # have `..' components.
257 use constant LANG_IGNORE => 0;
258 use constant LANG_PROCESS => 1;
259 use constant LANG_SUBDIR => 2;
261 # These are used when keeping track of whether an object can be built
262 # by two different paths.
263 use constant COMPILE_LIBTOOL => 1;
264 use constant COMPILE_ORDINARY => 2;
266 # We can't always associate a location to a variable or a rule,
267 # when its defined by Automake. We use INTERNAL in this case.
268 use constant INTERNAL => new Automake::Location;
269 \f
271 ## ---------------------------------- ##
272 ## Variables related to the options. ##
273 ## ---------------------------------- ##
275 # TRUE if we should always generate Makefile.in.
276 my $force_generation = 1;
278 # From the Perl manual.
279 my $symlink_exists = (eval 'symlink ("", "");', $@ eq '');
281 # TRUE if missing standard files should be installed.
282 my $add_missing = 0;
284 # TRUE if we should copy missing files; otherwise symlink if possible.
285 my $copy_missing = 0;
287 # TRUE if we should always update files that we know about.
288 my $force_missing = 0;
291 ## ---------------------------------------- ##
292 ## Variables filled during files scanning. ##
293 ## ---------------------------------------- ##
295 # Name of the configure.ac file.
296 my $configure_ac;
298 # Files found by scanning configure.ac for LIBOBJS.
299 my %libsources = ();
301 # Names used in AC_CONFIG_HEADER call.
302 my @config_headers = ();
304 # Names used in AC_CONFIG_LINKS call.
305 my @config_links = ();
307 # Directory where output files go. Actually, output files are
308 # relative to this directory.
309 my $output_directory;
311 # List of Makefile.am's to process, and their corresponding outputs.
312 my @input_files = ();
313 my %output_files = ();
315 # Complete list of Makefile.am's that exist.
316 my @configure_input_files = ();
318 # List of files in AC_CONFIG_FILES/AC_OUTPUT without Makefile.am's,
319 # and their outputs.
320 my @other_input_files = ();
321 # Where each AC_CONFIG_FILES/AC_OUTPUT/AC_CONFIG_LINK/AC_CONFIG_HEADER appears.
322 # The keys are the files created by these macros.
323 my %ac_config_files_location = ();
325 # Directory to search for configure-required files. This
326 # will be computed by &locate_aux_dir and can be set using
327 # AC_CONFIG_AUX_DIR in configure.ac.
328 # $CONFIG_AUX_DIR is the `raw' directory, valid only in the source-tree.
329 my $config_aux_dir = '';
330 my $config_aux_dir_set_in_configure_ac = 0;
331 # $AM_CONFIG_AUX_DIR is prefixed with $(top_srcdir), so it can be used
332 # in Makefiles.
333 my $am_config_aux_dir = '';
335 # Whether AM_GNU_GETTEXT has been seen in configure.ac.
336 my $seen_gettext = 0;
337 # Whether AM_GNU_GETTEXT([external]) is used.
338 my $seen_gettext_external = 0;
339 # Where AM_GNU_GETTEXT appears.
340 my $ac_gettext_location;
342 # Lists of tags supported by Libtool.
343 my %libtool_tags = ();
345 # TRUE if we've seen AC_CANONICAL_(HOST|SYSTEM).
346 my $seen_canonical = 0;
347 my $canonical_location;
349 # Where AM_MAINTAINER_MODE appears.
350 my $seen_maint_mode;
352 # Actual version we've seen.
353 my $package_version = '';
355 # Where version is defined.
356 my $package_version_location;
358 # TRUE if we've seen AC_ENABLE_MULTILIB.
359 my $seen_multilib = 0;
361 # TRUE if we've seen AM_PROG_CC_C_O
362 my $seen_cc_c_o = 0;
364 # Where AM_INIT_AUTOMAKE is called;
365 my $seen_init_automake = 0;
367 # TRUE if we've seen AM_AUTOMAKE_VERSION.
368 my $seen_automake_version = 0;
370 # Hash table of discovered configure substitutions. Keys are names,
371 # values are `FILE:LINE' strings which are used by error message
372 # generation.
373 my %configure_vars = ();
375 # Files included by $configure_ac.
376 my @configure_deps = ();
378 # Greatest timestamp of configure's dependencies.
379 my $configure_deps_greatest_timestamp = 0;
381 # Hash table of AM_CONDITIONAL variables seen in configure.
382 my %configure_cond = ();
384 # This maps extensions onto language names.
385 my %extension_map = ();
387 # List of the DIST_COMMON files we discovered while reading
388 # configure.in
389 my $configure_dist_common = '';
391 # This maps languages names onto objects.
392 my %languages = ();
394 # List of targets we must always output.
395 # FIXME: Complete, and remove falsely required targets.
396 my %required_targets =
397 (
398 'all' => 1,
399 'dvi' => 1,
400 'pdf' => 1,
401 'ps' => 1,
402 'info' => 1,
403 'install-info' => 1,
404 'install' => 1,
405 'install-data' => 1,
406 'install-exec' => 1,
407 'uninstall' => 1,
409 # FIXME: Not required, temporary hacks.
410 # Well, actually they are sort of required: the -recursive
411 # targets will run them anyway...
412 'dvi-am' => 1,
413 'pdf-am' => 1,
414 'ps-am' => 1,
415 'info-am' => 1,
416 'install-data-am' => 1,
417 'install-exec-am' => 1,
418 'installcheck-am' => 1,
419 'uninstall-am' => 1,
421 'install-man' => 1,
422 );
424 # Set to 1 if this run will create the Makefile.in that distribute
425 # the files in config_aux_dir.
426 my $automake_will_process_aux_dir = 0;
428 # The name of the Makefile currently being processed.
429 my $am_file = 'BUG';
430 \f
432 ################################################################
434 ## ------------------------------------------ ##
435 ## Variables reset by &initialize_per_input. ##
436 ## ------------------------------------------ ##
438 # Basename and relative dir of the input file.
439 my $am_file_name;
440 my $am_relative_dir;
442 # Same but wrt Makefile.in.
443 my $in_file_name;
444 my $relative_dir;
446 # Greatest timestamp of the output's dependencies (excluding
447 # configure's dependencies).
448 my $output_deps_greatest_timestamp;
450 # These two variables are used when generating each Makefile.in.
451 # They hold the Makefile.in until it is ready to be printed.
452 my $output_rules;
453 my $output_vars;
454 my $output_trailer;
455 my $output_all;
456 my $output_header;
458 # This is the conditional stack, updated on if/else/endif, and
459 # used to build Condition objects.
460 my @cond_stack;
462 # This holds the set of included files.
463 my @include_stack;
465 # This holds a list of directories which we must create at `dist'
466 # time. This is used in some strange scenarios involving weird
467 # AC_OUTPUT commands.
468 my %dist_dirs;
470 # List of dependencies for the obvious targets.
471 my @all;
472 my @check;
473 my @check_tests;
475 # Keys in this hash table are files to delete. The associated
476 # value tells when this should happen (MOSTLY_CLEAN, DIST_CLEAN, etc.)
477 my %clean_files;
479 # Keys in this hash table are object files or other files in
480 # subdirectories which need to be removed. This only holds files
481 # which are created by compilations. The value in the hash indicates
482 # when the file should be removed.
483 my %compile_clean_files;
485 # Keys in this hash table are directories where we expect to build a
486 # libtool object. We use this information to decide what directories
487 # to delete.
488 my %libtool_clean_directories;
490 # Value of `$(SOURCES)', used by tags.am.
491 my @sources;
492 # Sources which go in the distribution.
493 my @dist_sources;
495 # This hash maps object file names onto their corresponding source
496 # file names. This is used to ensure that each object is created
497 # by a single source file.
498 my %object_map;
500 # This hash maps object file names onto an integer value representing
501 # whether this object has been built via ordinary compilation or
502 # libtool compilation (the COMPILE_* constants).
503 my %object_compilation_map;
506 # This keeps track of the directories for which we've already
507 # created dirstamp code.
508 my %directory_map;
510 # All .P files.
511 my %dep_files;
513 # This is a list of all targets to run during "make dist".
514 my @dist_targets;
516 # Keys in this hash are the basenames of files which must depend on
517 # ansi2knr. Values are either the empty string, or the directory in
518 # which the ANSI source file appears; the directory must have a
519 # trailing `/'.
520 my %de_ansi_files;
522 # This is the name of the redirect `all' target to use.
523 my $all_target;
525 # This keeps track of which extensions we've seen (that we care
526 # about).
527 my %extension_seen;
529 # This is random scratch space for the language finish functions.
530 # Don't randomly overwrite it; examine other uses of keys first.
531 my %language_scratch;
533 # We keep track of which objects need special (per-executable)
534 # handling on a per-language basis.
535 my %lang_specific_files;
537 # This is set when `handle_dist' has finished. Once this happens,
538 # we should no longer push on dist_common.
539 my $handle_dist_run;
541 # Used to store a set of linkers needed to generate the sources currently
542 # under consideration.
543 my %linkers_used;
545 # True if we need `LINK' defined. This is a hack.
546 my $need_link;
548 # Was get_object_extension run?
549 # FIXME: This is a hack. a better switch should be found.
550 my $get_object_extension_was_run;
552 # Record each file processed by make_paragraphs.
553 my %transformed_files;
555 ################################################################
557 # var_SUFFIXES_trigger ($TYPE, $VALUE)
558 # ------------------------------------
559 # This is called by Automake::Variable::define() when SUFFIXES
560 # is defined ($TYPE eq '') or appended ($TYPE eq '+').
561 # The work here needs to be performed as a side-effect of the
562 # macro_define() call because SUFFIXES definitions impact
563 # on $KNOWN_EXTENSIONS_PATTERN which is used used when parsing
564 # the input am file.
565 sub var_SUFFIXES_trigger ($$)
566 {
567 my ($type, $value) = @_;
568 accept_extensions (split (' ', $value));
569 }
570 Automake::Variable::hook ('SUFFIXES', \&var_SUFFIXES_trigger);
572 ################################################################
574 ## --------------------------------- ##
575 ## Forward subroutine declarations. ##
576 ## --------------------------------- ##
577 sub register_language (%);
578 sub file_contents_internal ($$$%);
579 sub define_files_variable ($\@$$);
582 # &initialize_per_input ()
583 # ------------------------
584 # (Re)-Initialize per-Makefile.am variables.
585 sub initialize_per_input ()
586 {
587 reset_local_duplicates ();
589 $am_file_name = '';
590 $am_relative_dir = '';
592 $in_file_name = '';
593 $relative_dir = '';
595 $output_deps_greatest_timestamp = 0;
597 $output_rules = '';
598 $output_vars = '';
599 $output_trailer = '';
600 $output_all = '';
601 $output_header = '';
603 Automake::Options::reset;
604 Automake::Variable::reset;
605 Automake::Rule::reset;
607 @cond_stack = ();
609 @include_stack = ();
611 %dist_dirs = ();
613 @all = ();
614 @check = ();
615 @check_tests = ();
617 %clean_files = ();
619 @sources = ();
620 @dist_sources = ();
622 %object_map = ();
623 %object_compilation_map = ();
625 %directory_map = ();
627 %dep_files = ();
629 @dist_targets = ();
631 %de_ansi_files = ();
633 $all_target = '';
635 %extension_seen = ();
637 %language_scratch = ();
639 %lang_specific_files = ();
641 $handle_dist_run = 0;
643 $need_link = 0;
645 $get_object_extension_was_run = 0;
647 %compile_clean_files = ();
649 # We always include `.'. This isn't strictly correct.
650 %libtool_clean_directories = ('.' => 1);
652 %transformed_files = ();
653 }
656 ################################################################
658 # Initialize our list of languages that are internally supported.
660 # C.
661 register_language ('name' => 'c',
662 'Name' => 'C',
663 'config_vars' => ['CC'],
664 'ansi' => 1,
665 'autodep' => '',
666 'flags' => ['CFLAGS', 'CPPFLAGS'],
667 'compiler' => 'COMPILE',
668 'compile' => '$(CC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS) $(CPPFLAGS) $(AM_CFLAGS) $(CFLAGS)',
669 'lder' => 'CCLD',
670 'ld' => '$(CC)',
671 'linker' => 'LINK',
672 'link' => '$(CCLD) $(AM_CFLAGS) $(CFLAGS) $(AM_LDFLAGS) $(LDFLAGS) -o $@',
673 'compile_flag' => '-c',
674 'libtool_tag' => 'CC',
675 'extensions' => ['.c'],
676 '_finish' => \&lang_c_finish);
678 # C++.
679 register_language ('name' => 'cxx',
680 'Name' => 'C++',
681 'config_vars' => ['CXX'],
682 'linker' => 'CXXLINK',
683 'link' => '$(CXXLD) $(AM_CXXFLAGS) $(CXXFLAGS) $(AM_LDFLAGS) $(LDFLAGS) -o $@',
684 'autodep' => 'CXX',
685 'flags' => ['CXXFLAGS', 'CPPFLAGS'],
686 'compile' => '$(CXX) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS) $(CPPFLAGS) $(AM_CXXFLAGS) $(CXXFLAGS)',
687 'compiler' => 'CXXCOMPILE',
688 'compile_flag' => '-c',
689 'output_flag' => '-o',
690 'libtool_tag' => 'CXX',
691 'lder' => 'CXXLD',
692 'ld' => '$(CXX)',
693 'pure' => 1,
694 'extensions' => ['.c++', '.cc', '.cpp', '.cxx', '.C']);
696 # Objective C.
697 register_language ('name' => 'objc',
698 'Name' => 'Objective C',
699 'config_vars' => ['OBJC'],
700 'linker' => 'OBJCLINK',,
701 'link' => '$(OBJCLD) $(AM_OBJCFLAGS) $(OBJCFLAGS) $(AM_LDFLAGS) $(LDFLAGS) -o $@',
702 'autodep' => 'OBJC',
703 'flags' => ['OBJCFLAGS', 'CPPFLAGS'],
704 'compile' => '$(OBJC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS) $(CPPFLAGS) $(AM_OBJCFLAGS) $(OBJCFLAGS)',
705 'compiler' => 'OBJCCOMPILE',
706 'compile_flag' => '-c',
707 'output_flag' => '-o',
708 'lder' => 'OBJCLD',
709 'ld' => '$(OBJC)',
710 'pure' => 1,
711 'extensions' => ['.m']);
713 # Headers.
714 register_language ('name' => 'header',
715 'Name' => 'Header',
716 'extensions' => ['.h', '.H', '.hxx', '.h++', '.hh',
717 '.hpp', '.inc'],
718 # No output.
719 'output_extensions' => sub { return () },
720 # Nothing to do.
721 '_finish' => sub { });
723 # Yacc (C & C++).
724 register_language ('name' => 'yacc',
725 'Name' => 'Yacc',
726 'config_vars' => ['YACC'],
727 'flags' => ['YFLAGS'],
728 'compile' => '$(YACC) $(YFLAGS) $(AM_YFLAGS)',
729 'compiler' => 'YACCCOMPILE',
730 'extensions' => ['.y'],
731 'output_extensions' => sub { (my $ext = $_[0]) =~ tr/y/c/;
732 return ($ext,) },
733 'rule_file' => 'yacc',
734 '_finish' => \&lang_yacc_finish,
735 '_target_hook' => \&lang_yacc_target_hook);
736 register_language ('name' => 'yaccxx',
737 'Name' => 'Yacc (C++)',
738 'config_vars' => ['YACC'],
739 'rule_file' => 'yacc',
740 'flags' => ['YFLAGS'],
741 'compiler' => 'YACCCOMPILE',
742 'compile' => '$(YACC) $(YFLAGS) $(AM_YFLAGS)',
743 'extensions' => ['.y++', '.yy', '.yxx', '.ypp'],
744 'output_extensions' => sub { (my $ext = $_[0]) =~ tr/y/c/;
745 return ($ext,) },
746 '_finish' => \&lang_yacc_finish,
747 '_target_hook' => \&lang_yacc_target_hook);
749 # Lex (C & C++).
750 register_language ('name' => 'lex',
751 'Name' => 'Lex',
752 'config_vars' => ['LEX'],
753 'rule_file' => 'lex',
754 'flags' => ['LFLAGS'],
755 'compile' => '$(LEX) $(LFLAGS) $(AM_LFLAGS)',
756 'compiler' => 'LEXCOMPILE',
757 'extensions' => ['.l'],
758 'output_extensions' => sub { (my $ext = $_[0]) =~ tr/l/c/;
759 return ($ext,) },
760 '_finish' => \&lang_lex_finish,
761 '_target_hook' => \&lang_lex_target_hook);
762 register_language ('name' => 'lexxx',
763 'Name' => 'Lex (C++)',
764 'config_vars' => ['LEX'],
765 'rule_file' => 'lex',
766 'flags' => ['LFLAGS'],
767 'compile' => '$(LEX) $(LFLAGS) $(AM_LFLAGS)',
768 'compiler' => 'LEXCOMPILE',
769 'extensions' => ['.l++', '.ll', '.lxx', '.lpp'],
770 'output_extensions' => sub { (my $ext = $_[0]) =~ tr/l/c/;
771 return ($ext,) },
772 '_finish' => \&lang_lex_finish,
773 '_target_hook' => \&lang_lex_target_hook);
775 # Assembler.
776 register_language ('name' => 'asm',
777 'Name' => 'Assembler',
778 'config_vars' => ['CCAS', 'CCASFLAGS'],
780 'flags' => ['CCASFLAGS'],
781 # Users can set AM_ASFLAGS to includes DEFS, INCLUDES,
782 # or anything else required. They can also set AS.
783 'compile' => '$(CCAS) $(AM_CCASFLAGS) $(CCASFLAGS)',
784 'compiler' => 'CCASCOMPILE',
785 'compile_flag' => '-c',
786 'extensions' => ['.s', '.S'],
788 # With assembly we still use the C linker.
789 '_finish' => \&lang_c_finish);
791 # Fortran 77
792 register_language ('name' => 'f77',
793 'Name' => 'Fortran 77',
794 'linker' => 'F77LINK',
795 'link' => '$(F77LD) $(AM_FFLAGS) $(FFLAGS) $(AM_LDFLAGS) $(LDFLAGS) -o $@',
796 'flags' => ['FFLAGS'],
797 'compile' => '$(F77) $(AM_FFLAGS) $(FFLAGS)',
798 'compiler' => 'F77COMPILE',
799 'compile_flag' => '-c',
800 'output_flag' => '-o',
801 'libtool_tag' => 'F77',
802 'lder' => 'F77LD',
803 'ld' => '$(F77)',
804 'pure' => 1,
805 'extensions' => ['.f', '.for']);
807 # Fortran
808 register_language ('name' => 'fc',
809 'Name' => 'Fortran',
810 'linker' => 'FCLINK',
811 'link' => '$(FCLD) $(AM_FCFLAGS) $(FCFLAGS) $(AM_LDFLAGS) $(LDFLAGS) -o $@',
812 'flags' => ['FCFLAGS'],
813 'compile' => '$(FC) $(AM_FCFLAGS) $(FCFLAGS)',
814 'compiler' => 'FCCOMPILE',
815 'compile_flag' => '-c',
816 'output_flag' => '-o',
817 'lder' => 'FCLD',
818 'ld' => '$(FC)',
819 'pure' => 1,
820 'extensions' => ['.f90', '.f95']);
822 # Preprocessed Fortran
823 register_language ('name' => 'ppfc',
824 'Name' => 'Preprocessed Fortran',
825 'config_vars' => ['FC'],
826 'linker' => 'FCLINK',
827 'link' => '$(FCLD) $(AM_FFLAGS) $(FCFLAGS) $(AM_LDFLAGS) $(LDFLAGS) -o $@',
828 'lder' => 'FCLD',
829 'ld' => '$(FC)',
830 'flags' => ['FCFLAGS', 'CPPFLAGS'],
831 'compiler' => 'PPFCCOMPILE',
832 'compile' => '$(FC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS) $(CPPFLAGS) $(AM_FCFLAGS) $(FCFLAGS)',
833 'compile_flag' => '-c',
834 'output_flag' => '-o',
835 'libtool_tag' => 'FC',
836 'pure' => 1,
837 'extensions' => ['.F90','.F95']);
839 # Preprocessed Fortran 77
840 #
841 # The current support for preprocessing Fortran 77 just involves
842 # passing `$(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS)
843 # $(CPPFLAGS)' as additional flags to the Fortran 77 compiler, since
844 # this is how GNU Make does it; see the `GNU Make Manual, Edition 0.51
845 # for `make' Version 3.76 Beta' (specifically, from info file
846 # `(make)Catalogue of Rules').
847 #
848 # A better approach would be to write an Autoconf test
849 # (i.e. AC_PROG_FPP) for a Fortran 77 preprocessor, because not all
850 # Fortran 77 compilers know how to do preprocessing. The Autoconf
851 # macro AC_PROG_FPP should test the Fortran 77 compiler first for
852 # preprocessing capabilities, and then fall back on cpp (if cpp were
853 # available).
854 register_language ('name' => 'ppf77',
855 'Name' => 'Preprocessed Fortran 77',
856 'config_vars' => ['F77'],
857 'linker' => 'F77LINK',
858 'link' => '$(F77LD) $(AM_FFLAGS) $(FFLAGS) $(AM_LDFLAGS) $(LDFLAGS) -o $@',
859 'lder' => 'F77LD',
860 'ld' => '$(F77)',
861 'flags' => ['FFLAGS', 'CPPFLAGS'],
862 'compiler' => 'PPF77COMPILE',
863 'compile' => '$(F77) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS) $(CPPFLAGS) $(AM_FFLAGS) $(FFLAGS)',
864 'compile_flag' => '-c',
865 'output_flag' => '-o',
866 'libtool_tag' => 'F77',
867 'pure' => 1,
868 'extensions' => ['.F']);
870 # Ratfor.
871 register_language ('name' => 'ratfor',
872 'Name' => 'Ratfor',
873 'config_vars' => ['F77'],
874 'linker' => 'F77LINK',
875 'link' => '$(F77LD) $(AM_FFLAGS) $(FFLAGS) $(AM_LDFLAGS) $(LDFLAGS) -o $@',
876 'lder' => 'F77LD',
877 'ld' => '$(F77)',
878 'flags' => ['RFLAGS', 'FFLAGS'],
879 # FIXME also FFLAGS.
880 'compile' => '$(F77) $(AM_FFLAGS) $(FFLAGS) $(AM_RFLAGS) $(RFLAGS)',
881 'compiler' => 'RCOMPILE',
882 'compile_flag' => '-c',
883 'output_flag' => '-o',
884 'libtool_tag' => 'F77',
885 'pure' => 1,
886 'extensions' => ['.r']);
888 # Java via gcj.
889 register_language ('name' => 'java',
890 'Name' => 'Java',
891 'config_vars' => ['GCJ'],
892 'linker' => 'GCJLINK',
893 'link' => '$(GCJLD) $(AM_GCJFLAGS) $(GCJFLAGS) $(AM_LDFLAGS) $(LDFLAGS) -o $@',
894 'autodep' => 'GCJ',
895 'flags' => ['GCJFLAGS'],
896 'compile' => '$(GCJ) $(AM_GCJFLAGS) $(GCJFLAGS)',
897 'compiler' => 'GCJCOMPILE',
898 'compile_flag' => '-c',
899 'output_flag' => '-o',
900 'libtool_tag' => 'GCJ',
901 'lder' => 'GCJLD',
902 'ld' => '$(GCJ)',
903 'pure' => 1,
904 'extensions' => ['.java', '.class', '.zip', '.jar']);
906 ################################################################
908 # Error reporting functions.
910 # err_am ($MESSAGE, [%OPTIONS])
911 # -----------------------------
912 # Uncategorized errors about the current Makefile.am.
913 sub err_am ($;%)
914 {
915 msg_am ('error', @_);
916 }
918 # err_ac ($MESSAGE, [%OPTIONS])
919 # -----------------------------
920 # Uncategorized errors about configure.ac.
921 sub err_ac ($;%)
922 {
923 msg_ac ('error', @_);
924 }
926 # msg_am ($CHANNEL, $MESSAGE, [%OPTIONS])
927 # ---------------------------------------
928 # Messages about about the current Makefile.am.
929 sub msg_am ($$;%)
930 {
931 my ($channel, $msg, %opts) = @_;
932 msg $channel, "${am_file}.am", $msg, %opts;
933 }
935 # msg_ac ($CHANNEL, $MESSAGE, [%OPTIONS])
936 # ---------------------------------------
937 # Messages about about configure.ac.
938 sub msg_ac ($$;%)
939 {
940 my ($channel, $msg, %opts) = @_;
941 msg $channel, $configure_ac, $msg, %opts;
942 }
944 ################################################################
946 # subst ($TEXT)
947 # -------------
948 # Return a configure-style substitution using the indicated text.
949 # We do this to avoid having the substitutions directly in automake.in;
950 # when we do that they are sometimes removed and this causes confusion
951 # and bugs.
952 sub subst ($)
953 {
954 my ($text) = @_;
955 return '@' . $text . '@';
956 }
958 ################################################################
961 # $BACKPATH
962 # &backname ($REL-DIR)
963 # --------------------
964 # If I `cd $REL-DIR', then to come back, I should `cd $BACKPATH'.
965 # For instance `src/foo' => `../..'.
966 # Works with non strictly increasing paths, i.e., `src/../lib' => `..'.
967 sub backname ($)
968 {
969 my ($file) = @_;
970 my @res;
971 foreach (split (/\//, $file))
972 {
973 next if $_ eq '.' || $_ eq '';
974 if ($_ eq '..')
975 {
976 pop @res;
977 }
978 else
979 {
980 push (@res, '..');
981 }
982 }
983 return join ('/', @res) || '.';
984 }
986 ################################################################
989 # Handle AUTOMAKE_OPTIONS variable. Return 1 on error, 0 otherwise.
990 sub handle_options
991 {
992 my $var = var ('AUTOMAKE_OPTIONS');
993 if ($var)
994 {
995 # FIXME: We should disallow conditional definitions of AUTOMAKE_OPTIONS.
996 if (process_option_list ($var->rdef (TRUE)->location,
997 $var->value_as_list_recursive (cond_filter =>
998 TRUE)))
999 {
1000 return 1;
1001 }
1002 }
1004 if ($strictness == GNITS)
1005 {
1006 set_option ('readme-alpha', INTERNAL);
1007 set_option ('std-options', INTERNAL);
1008 set_option ('check-news', INTERNAL);
1009 }
1011 return 0;
1012 }
1014 # shadow_unconditionally ($varname, $where)
1015 # -----------------------------------------
1016 # Return a $(variable) that contains all possible values
1017 # $varname can take.
1018 # If the VAR wasn't defined conditionally, return $(VAR).
1019 # Otherwise we create a am__VAR_DIST variable which contains
1020 # all possible values, and return $(am__VAR_DIST).
1021 sub shadow_unconditionally ($$)
1022 {
1023 my ($varname, $where) = @_;
1024 my $var = var $varname;
1025 if ($var->has_conditional_contents)
1026 {
1027 $varname = "am__${varname}_DIST";
1028 my @files = uniq ($var->value_as_list_recursive);
1029 define_pretty_variable ($varname, TRUE, $where, @files);
1030 }
1031 return "\$($varname)"
1032 }
1034 # get_object_extension ($OUT)
1035 # ---------------------------
1036 # Return object extension. Just once, put some code into the output.
1037 # OUT is the name of the output file
1038 sub get_object_extension
1039 {
1040 my ($out) = @_;
1042 # Maybe require libtool library object files.
1043 my $extension = '.$(OBJEXT)';
1044 $extension = '.lo' if ($out =~ /\.la$/);
1046 # Check for automatic de-ANSI-fication.
1047 $extension = '$U' . $extension
1048 if option 'ansi2knr';
1050 $get_object_extension_was_run = 1;
1052 return $extension;
1053 }
1056 # Call finish function for each language that was used.
1057 sub handle_languages
1058 {
1059 if (! option 'no-dependencies')
1060 {
1061 # Include auto-dep code. Don't include it if DEP_FILES would
1062 # be empty.
1063 if (&saw_sources_p (0) && keys %dep_files)
1064 {
1065 # Set location of depcomp.
1066 &define_variable ('depcomp',
1067 "\$(SHELL) $am_config_aux_dir/depcomp",
1068 INTERNAL);
1069 &define_variable ('am__depfiles_maybe', 'depfiles', INTERNAL);
1071 require_conf_file ("$am_file.am", FOREIGN, 'depcomp');
1073 my @deplist = sort keys %dep_files;
1074 # Generate each `include' individually. Irix 6 make will
1075 # not properly include several files resulting from a
1076 # variable expansion; generating many separate includes
1077 # seems safest.
1078 $output_rules .= "\n";
1079 foreach my $iter (@deplist)
1080 {
1081 $output_rules .= (subst ('AMDEP_TRUE')
1082 . subst ('am__include')
1083 . ' '
1084 . subst ('am__quote')
1085 . $iter
1086 . subst ('am__quote')
1087 . "\n");
1088 }
1090 # Compute the set of directories to remove in distclean-depend.
1091 my @depdirs = uniq (map { dirname ($_) } @deplist);
1092 $output_rules .= &file_contents ('depend',
1093 new Automake::Location,
1094 DEPDIRS => "@depdirs");
1095 }
1096 }
1097 else
1098 {
1099 &define_variable ('depcomp', '', INTERNAL);
1100 &define_variable ('am__depfiles_maybe', '', INTERNAL);
1101 }
1103 my %done;
1105 # Is the c linker needed?
1106 my $needs_c = 0;
1107 foreach my $ext (sort keys %extension_seen)
1108 {
1109 next unless $extension_map{$ext};
1111 my $lang = $languages{$extension_map{$ext}};
1113 my $rule_file = $lang->rule_file || 'depend2';
1115 # Get information on $LANG.
1116 my $pfx = $lang->autodep;
1117 my $fpfx = ($pfx eq '') ? 'CC' : $pfx;
1119 my ($AMDEP, $FASTDEP) =
1120 (option 'no-dependencies' || $lang->autodep eq 'no')
1121 ? ('FALSE', 'FALSE') : ('AMDEP', "am__fastdep$fpfx");
1123 my %transform = ('EXT' => $ext,
1124 'PFX' => $pfx,
1125 'FPFX' => $fpfx,
1126 'AMDEP' => $AMDEP,
1127 'FASTDEP' => $FASTDEP,
1128 '-c' => $lang->compile_flag || '',
1129 'MORE-THAN-ONE'
1130 => (count_files_for_language ($lang->name) > 1));
1132 # Generate the appropriate rules for this extension.
1133 if (((! option 'no-dependencies') && $lang->autodep ne 'no')
1134 || defined $lang->compile)
1135 {
1136 # Some C compilers don't support -c -o. Use it only if really
1137 # needed.
1138 my $output_flag = $lang->output_flag || '';
1139 $output_flag = '-o'
1140 if (! $output_flag
1141 && $lang->name eq 'c'
1142 && option 'subdir-objects');
1144 # Compute a possible derived extension.
1145 # This is not used by depend2.am.
1146 my $der_ext = (&{$lang->output_extensions} ($ext))[0];
1148 # When we output an inference rule like `.c.o:' we
1149 # have two cases to consider: either subdir-objects
1150 # is used, or it is not.
1151 #
1152 # In the latter case the rule is used to build objects
1153 # in the current directory, and dependencies always
1154 # go into `./$(DEPDIR)/'. We can hard-code this value.
1155 #
1156 # In the former case the rule can be used to build
1157 # objects in sub-directories too. Dependencies should
1158 # go into the appropriate sub-directories, e.g.,
1159 # `sub/$(DEPDIR)/'. The value of this directory
1160 # need the be computed on-the-fly.
1161 #
1162 # DEPBASE holds the name of this directory, plus the
1163 # basename part of the object file (extensions Po, TPo,
1164 # Plo, TPlo will be added later as appropriate). It is
1165 # either hardcoded, or a shell variable (`$depbase') that
1166 # will be computed by the rule.
1167 my $depbase =
1168 option ('subdir-objects') ? '$$depbase' : '$(DEPDIR)/$*';
1169 $output_rules .=
1170 file_contents ($rule_file,
1171 new Automake::Location,
1172 %transform,
1173 GENERIC => 1,
1175 'DERIVED-EXT' => $der_ext,
1177 DEPBASE => $depbase,
1178 BASE => '$*',
1179 SOURCE => '$<',
1180 OBJ => '$@',
1181 OBJOBJ => '$@',
1182 LTOBJ => '$@',
1184 COMPILE => '$(' . $lang->compiler . ')',
1185 LTCOMPILE => '$(LT' . $lang->compiler . ')',
1186 -o => $output_flag,
1187 SUBDIROBJ => !! option 'subdir-objects');
1188 }
1190 # Now include code for each specially handled object with this
1191 # language.
1192 my %seen_files = ();
1193 foreach my $file (@{$lang_specific_files{$lang->name}})
1194 {
1195 my ($derived, $source, $obj, $myext, %file_transform) = @$file;
1197 # We might see a given object twice, for instance if it is
1198 # used under different conditions.
1199 next if defined $seen_files{$obj};
1200 $seen_files{$obj} = 1;
1202 prog_error ("found " . $lang->name .
1203 " in handle_languages, but compiler not defined")
1204 unless defined $lang->compile;
1206 my $obj_compile = $lang->compile;
1208 # Rewrite each occurrence of `AM_$flag' in the compile
1209 # rule into `${derived}_$flag' if it exists.
1210 for my $flag (@{$lang->flags})
1211 {
1212 my $val = "${derived}_$flag";
1213 $obj_compile =~ s/\(AM_$flag\)/\($val\)/
1214 if set_seen ($val);
1215 }
1217 my $libtool_tag = '';
1218 if ($lang->libtool_tag && exists $libtool_tags{$lang->libtool_tag})
1219 {
1220 $libtool_tag = '--tag=' . $lang->libtool_tag . ' '
1221 }
1223 my $obj_ltcompile =
1224 '$(LIBTOOL) --mode=compile ' . $libtool_tag . $obj_compile;
1226 # We _need_ `-o' for per object rules.
1227 my $output_flag = $lang->output_flag || '-o';
1229 my $depbase = dirname ($obj);
1230 $depbase = ''
1231 if $depbase eq '.';
1232 $depbase .= '/'
1233 unless $depbase eq '';
1234 $depbase .= '$(DEPDIR)/' . basename ($obj);
1236 # Support for deansified files in subdirectories is ugly
1237 # enough to deserve an explanation.
1238 #
1239 # A Note about normal ansi2knr processing first. On
1240 #
1241 # AUTOMAKE_OPTIONS = ansi2knr
1242 # bin_PROGRAMS = foo
1243 # foo_SOURCES = foo.c
1244 #
1245 # we generate rules similar to:
1246 #
1247 # foo: foo$U.o; link ...
1248 # foo$U.o: foo$U.c; compile ...
1249 # foo_.c: foo.c; ansi2knr ...
1250 #
1251 # this is fairly compact, and will call ansi2knr depending
1252 # on the value of $U (`' or `_').
1253 #
1254 # It's harder with subdir sources. On
1255 #
1256 # AUTOMAKE_OPTIONS = ansi2knr
1257 # bin_PROGRAMS = foo
1258 # foo_SOURCES = sub/foo.c
1259 #
1260 # we have to create foo_.c in the current directory.
1261 # (Unless the user asks 'subdir-objects'.) This is important
1262 # in case the same file (`foo.c') is compiled from other
1263 # directories with different cpp options: foo_.c would
1264 # be preprocessed for only one set of options if it were
1265 # put in the subdirectory.
1266 #
1267 # Because foo$U.o must be built from either foo_.c or
1268 # sub/foo.c we can't be as concise as in the first example.
1269 # Instead we output
1270 #
1271 # foo: foo$U.o; link ...
1272 # foo_.o: foo_.c; compile ...
1273 # foo.o: sub/foo.c; compile ...
1274 # foo_.c: foo.c; ansi2knr ...
1275 #
1276 # This is why we'll now transform $rule_file twice
1277 # if we detect this case.
1278 # A first time we output the compile rule with `$U'
1279 # replaced by `_' and the source directory removed,
1280 # and another time we simply remove `$U'.
1281 #
1282 # Note that at this point $source (as computed by
1283 # &handle_single_transform) is `sub/foo$U.c'.
1284 # This can be confusing: it can be used as-is when
1285 # subdir-objects is set, otherwise you have to know
1286 # it really means `foo_.c' or `sub/foo.c'.
1287 my $objdir = dirname ($obj);
1288 my $srcdir = dirname ($source);
1289 if ($lang->ansi && $obj =~ /\$U/)
1290 {
1291 prog_error "`$obj' contains \$U, but `$source' doesn't."
1292 if $source !~ /\$U/;
1294 (my $source_ = $source) =~ s/\$U/_/g;
1295 # Output an additional rule if _.c and .c are not in
1296 # the same directory. (_.c is always in $objdir.)
1297 if ($objdir ne $srcdir)
1298 {
1299 (my $obj_ = $obj) =~ s/\$U/_/g;
1300 (my $depbase_ = $depbase) =~ s/\$U/_/g;
1301 $source_ = basename ($source_);
1303 $output_rules .=
1304 file_contents ($rule_file,
1305 new Automake::Location,
1306 %transform,
1307 GENERIC => 0,
1309 DEPBASE => $depbase_,
1310 BASE => $obj_,
1311 SOURCE => $source_,
1312 OBJ => "$obj_$myext",
1313 OBJOBJ => "$obj_.obj",
1314 LTOBJ => "$obj_.lo",
1316 COMPILE => $obj_compile,
1317 LTCOMPILE => $obj_ltcompile,
1318 -o => $output_flag,
1319 %file_transform);
1320 $obj =~ s/\$U//g;
1321 $depbase =~ s/\$U//g;
1322 $source =~ s/\$U//g;
1323 }
1324 }
1326 $output_rules .=
1327 file_contents ($rule_file,
1328 new Automake::Location,
1329 %transform,
1330 GENERIC => 0,
1332 DEPBASE => $depbase,
1333 BASE => $obj,
1334 SOURCE => $source,
1335 # Use $myext and not `.o' here, in case
1336 # we are actually building a new source
1337 # file -- e.g. via yacc.
1338 OBJ => "$obj$myext",
1339 OBJOBJ => "$obj.obj",
1340 LTOBJ => "$obj.lo",
1342 COMPILE => $obj_compile,
1343 LTCOMPILE => $obj_ltcompile,
1344 -o => $output_flag,
1345 %file_transform);
1346 }
1348 # The rest of the loop is done once per language.
1349 next if defined $done{$lang};
1350 $done{$lang} = 1;
1352 # Load the language dependent Makefile chunks.
1353 my %lang = map { uc ($_) => 0 } keys %languages;
1354 $lang{uc ($lang->name)} = 1;
1355 $output_rules .= file_contents ('lang-compile',
1356 new Automake::Location,
1357 %transform, %lang);
1359 # If the source to a program consists entirely of code from a
1360 # `pure' language, for instance C++ for Fortran 77, then we
1361 # don't need the C compiler code. However if we run into
1362 # something unusual then we do generate the C code. There are
1363 # probably corner cases here that do not work properly.
1364 # People linking Java code to Fortran code deserve pain.
1365 $needs_c ||= ! $lang->pure;
1367 define_compiler_variable ($lang)
1368 if ($lang->compile);
1370 define_linker_variable ($lang)
1371 if ($lang->link);
1373 require_variables ("$am_file.am", $lang->Name . " source seen",
1374 TRUE, @{$lang->config_vars});
1376 # Call the finisher.
1377 $lang->finish;
1379 # Flags listed in `->flags' are user variables (per GNU Standards),
1380 # they should not be overridden in the Makefile...
1381 my @dont_override = @{$lang->flags};
1382 # ... and so is LDFLAGS.
1383 push @dont_override, 'LDFLAGS' if $lang->link;
1385 foreach my $flag (@dont_override)
1386 {
1387 my $var = var $flag;
1388 if ($var)
1389 {
1390 for my $cond ($var->conditions->conds)
1391 {
1392 if ($var->rdef ($cond)->owner == VAR_MAKEFILE)
1393 {
1394 msg_cond_var ('gnu', $cond, $flag,
1395 "`$flag' is a user variable, "
1396 . "you should not override it;\n"
1397 . "use `AM_$flag' instead.");
1398 }
1399 }
1400 }
1401 }
1402 }
1404 # If the project is entirely C++ or entirely Fortran 77 (i.e., 1
1405 # suffix rule was learned), don't bother with the C stuff. But if
1406 # anything else creeps in, then use it.
1407 $needs_c = 1
1408 if $need_link || suffix_rules_count > 1;
1410 if ($needs_c)
1411 {
1412 &define_compiler_variable ($languages{'c'})
1413 unless defined $done{$languages{'c'}};
1414 define_linker_variable ($languages{'c'});
1415 }
1416 }
1418 # Check to make sure a source defined in LIBOBJS is not explicitly
1419 # mentioned. This is a separate function (as opposed to being inlined
1420 # in handle_source_transform) because it isn't always appropriate to
1421 # do this check.
1422 sub check_libobjs_sources
1423 {
1424 my ($one_file, $unxformed) = @_;
1426 foreach my $prefix ('', 'EXTRA_', 'dist_', 'nodist_',
1427 'dist_EXTRA_', 'nodist_EXTRA_')
1428 {
1429 my @files;
1430 my $varname = $prefix . $one_file . '_SOURCES';
1431 my $var = var ($varname);
1432 if ($var)
1433 {
1434 @files = $var->value_as_list_recursive;
1435 }
1436 elsif ($prefix eq '')
1437 {
1438 @files = ($unxformed . '.c');
1439 }
1440 else
1441 {
1442 next;
1443 }
1445 foreach my $file (@files)
1446 {
1447 err_var ($prefix . $one_file . '_SOURCES',
1448 "automatically discovered file `$file' should not" .
1449 " be explicitly mentioned")
1450 if defined $libsources{$file};
1451 }
1452 }
1453 }
1456 # @OBJECTS
1457 # handle_single_transform ($VAR, $TOPPARENT, $DERIVED, $OBJ, $FILE, %TRANSFORM)
1458 # -----------------------------------------------------------------------------
1459 # Does much of the actual work for handle_source_transform.
1460 # Arguments are:
1461 # $VAR is the name of the variable that the source filenames come from
1462 # $TOPPARENT is the name of the _SOURCES variable which is being processed
1463 # $DERIVED is the name of resulting executable or library
1464 # $OBJ is the object extension (e.g., `$U.lo')
1465 # $FILE the source file to transform
1466 # %TRANSFORM contains extras arguments to pass to file_contents
1467 # when producing explicit rules
1468 # Result is a list of the names of objects
1469 # %linkers_used will be updated with any linkers needed
1470 sub handle_single_transform ($$$$$%)
1471 {
1472 my ($var, $topparent, $derived, $obj, $_file, %transform) = @_;
1473 my @files = ($_file);
1474 my @result = ();
1475 my $nonansi_obj = $obj;
1476 $nonansi_obj =~ s/\$U//g;
1478 # Turn sources into objects. We use a while loop like this
1479 # because we might add to @files in the loop.
1480 while (scalar @files > 0)
1481 {
1482 $_ = shift @files;
1484 # Configure substitutions in _SOURCES variables are errors.
1485 if (/^\@.*\@$/)
1486 {
1487 my $parent_msg = '';
1488 $parent_msg = "\nand is referred to from `$topparent'"
1489 if $topparent ne $var->name;
1490 err_var ($var,
1491 "`" . $var->name . "' includes configure substitution `$_'"
1492 . $parent_msg . ";\nconfigure " .
1493 "substitutions are not allowed in _SOURCES variables");
1494 next;
1495 }
1497 # If the source file is in a subdirectory then the `.o' is put
1498 # into the current directory, unless the subdir-objects option
1499 # is in effect.
1501 # Split file name into base and extension.
1502 next if ! /^(?:(.*)\/)?([^\/]*)($KNOWN_EXTENSIONS_PATTERN)$/;
1503 my $full = $_;
1504 my $directory = $1 || '';
1505 my $base = $2;
1506 my $extension = $3;
1508 # We must generate a rule for the object if it requires its own flags.
1509 my $renamed = 0;
1510 my ($linker, $object);
1512 # This records whether we've seen a derived source file (e.g.
1513 # yacc output).
1514 my $derived_source = 0;
1516 # This holds the `aggregate context' of the file we are
1517 # currently examining. If the file is compiled with
1518 # per-object flags, then it will be the name of the object.
1519 # Otherwise it will be `AM'. This is used by the target hook
1520 # language function.
1521 my $aggregate = 'AM';
1523 $extension = &derive_suffix ($extension, $nonansi_obj);
1524 my $lang;
1525 if ($extension_map{$extension} &&
1526 ($lang = $languages{$extension_map{$extension}}))
1527 {
1528 # Found the language, so see what it says.
1529 &saw_extension ($extension);
1531 # Note: computed subr call. The language rewrite function
1532 # should return one of the LANG_* constants. It could
1533 # also return a list whose first value is such a constant
1534 # and whose second value is a new source extension which
1535 # should be applied. This means this particular language
1536 # generates another source file which we must then process
1537 # further.
1538 my $subr = \&{'lang_' . $lang->name . '_rewrite'};
1539 my ($r, $source_extension)
1540 = &$subr ($directory, $base, $extension);
1541 # Skip this entry if we were asked not to process it.
1542 next if $r == LANG_IGNORE;
1544 # Now extract linker and other info.
1545 $linker = $lang->linker;
1547 my $this_obj_ext;
1548 if (defined $source_extension)
1549 {
1550 $this_obj_ext = $source_extension;
1551 $derived_source = 1;
1552 }
1553 elsif ($lang->ansi)
1554 {
1555 $this_obj_ext = $obj;
1556 }
1557 else
1558 {
1559 $this_obj_ext = $nonansi_obj;
1560 }
1561 $object = $base . $this_obj_ext;
1563 # Do we have per-executable flags for this executable?
1564 my $have_per_exec_flags = 0;
1565 foreach my $flag (@{$lang->flags})
1566 {
1567 if (set_seen ("${derived}_$flag"))
1568 {
1569 $have_per_exec_flags = 1;
1570 last;
1571 }
1572 }
1574 if ($have_per_exec_flags)
1575 {
1576 # We have a per-executable flag in effect for this
1577 # object. In this case we rewrite the object's
1578 # name to ensure it is unique. We also require
1579 # the `compile' program to deal with compilers
1580 # where `-c -o' does not work.
1582 # We choose the name `DERIVED_OBJECT' to ensure
1583 # (1) uniqueness, and (2) continuity between
1584 # invocations. However, this will result in a
1585 # name that is too long for losing systems, in
1586 # some situations. So we provide _SHORTNAME to
1587 # override.
1589 my $dname = $derived;
1590 my $var = var ($derived . '_SHORTNAME');
1591 if ($var)
1592 {
1593 # FIXME: should use the same Condition as
1594 # the _SOURCES variable. But this is really
1595 # silly overkill -- nobody should have
1596 # conditional shortnames.
1597 $dname = $var->variable_value;
1598 }
1599 $object = $dname . '-' . $object;
1601 require_conf_file ("$am_file.am", FOREIGN, 'compile')
1602 if $lang->name eq 'c';
1604 prog_error ($lang->name . " flags defined without compiler")
1605 if ! defined $lang->compile;
1607 $renamed = 1;
1608 }
1610 # If rewrite said it was ok, put the object into a
1611 # subdir.
1612 if ($r == LANG_SUBDIR && $directory ne '')
1613 {
1614 $object = $directory . '/' . $object;
1615 }
1617 # If the object file has been renamed (because per-target
1618 # flags are used) we cannot compile the file with an
1619 # inference rule: we need an explicit rule.
1620 #
1621 # If the source is in a subdirectory and the object is in
1622 # the current directory, we also need an explicit rule.
1623 #
1624 # If both source and object files are in a subdirectory
1625 # (this happens when the subdir-objects option is used),
1626 # then the inference will work.
1627 #
1628 # The latter case deserves a historical note. When the
1629 # subdir-objects option was added on 1999-04-11 it was
1630 # thought that inferences rules would work for
1631 # subdirectory objects too. Later, on 1999-11-22,
1632 # automake was changed to output explicit rules even for
1633 # subdir-objects. Nobody remembers why, but this occured
1634 # soon after the merge of the user-dep-gen-branch so it
1635 # might be related. In late 2003 people complained about
1636 # the size of the generated Makefile.ins (libgcj, with
1637 # 2200+ subdir objects was reported to have a 9MB
1638 # Makefile), so we now rely on inference rules again.
1639 # Maybe we'll run across the same issue as in the past,
1640 # but at least this time we can document it. However since
1641 # dependency tracking has evolved it is possible that
1642 # our old problem no longer exists.
1643 # Using inference rules for subdir-objects has been tested
1644 # with GNU make, Solaris make, Ultrix make, BSD make,
1645 # HP-UX make, and OSF1 make successfully.
1646 if ($renamed ||
1647 ($directory ne '' && ! option 'subdir-objects'))
1648 {
1649 my $obj_sans_ext = substr ($object, 0,
1650 - length ($this_obj_ext));
1651 my $full_ansi = $full;
1652 if ($lang->ansi && option 'ansi2knr')
1653 {
1654 $full_ansi =~ s/$KNOWN_EXTENSIONS_PATTERN$/\$U$&/;
1655 $obj_sans_ext .= '$U';
1656 }
1658 my @specifics = ($full_ansi, $obj_sans_ext,
1659 # Only use $this_obj_ext in the derived
1660 # source case because in the other case we
1661 # *don't* want $(OBJEXT) to appear here.
1662 ($derived_source ? $this_obj_ext : '.o'));
1664 # If we renamed the object then we want to use the
1665 # per-executable flag name. But if this is simply a
1666 # subdir build then we still want to use the AM_ flag
1667 # name.
1668 if ($renamed)
1669 {
1670 unshift @specifics, $derived;
1671 $aggregate = $derived;
1672 }
1673 else
1674 {
1675 unshift @specifics, 'AM';
1676 }
1678 # Each item on this list is a reference to a list consisting
1679 # of four values followed by additional transform flags for
1680 # file_contents. The four values are the derived flag prefix
1681 # (e.g. for `foo_CFLAGS', it is `foo'), the name of the
1682 # source file, the base name of the output file, and
1683 # the extension for the object file.
1684 push (@{$lang_specific_files{$lang->name}},
1685 [@specifics, %transform]);
1686 }
1687 }
1688 elsif ($extension eq $nonansi_obj)
1689 {
1690 # This is probably the result of a direct suffix rule.
1691 # In this case we just accept the rewrite.
1692 $object = "$base$extension";
1693 $linker = '';
1694 }
1695 else
1696 {
1697 # No error message here. Used to have one, but it was
1698 # very unpopular.
1699 # FIXME: we could potentially do more processing here,
1700 # perhaps treating the new extension as though it were a
1701 # new source extension (as above). This would require
1702 # more restructuring than is appropriate right now.
1703 next;
1704 }
1706 err_am "object `$object' created by `$full' and `$object_map{$object}'"
1707 if (defined $object_map{$object}
1708 && $object_map{$object} ne $full);
1710 my $comp_val = (($object =~ /\.lo$/)
1711 ? COMPILE_LIBTOOL : COMPILE_ORDINARY);
1712 (my $comp_obj = $object) =~ s/\.lo$/.\$(OBJEXT)/;
1713 if (defined $object_compilation_map{$comp_obj}
1714 && $object_compilation_map{$comp_obj} != 0
1715 # Only see the error once.
1716 && ($object_compilation_map{$comp_obj}
1717 != (COMPILE_LIBTOOL | COMPILE_ORDINARY))
1718 && $object_compilation_map{$comp_obj} != $comp_val)
1719 {
1720 err_am "object `$comp_obj' created both with libtool and without";
1721 }
1722 $object_compilation_map{$comp_obj} |= $comp_val;
1724 if (defined $lang)
1725 {
1726 # Let the language do some special magic if required.
1727 $lang->target_hook ($aggregate, $object, $full);
1728 }
1730 if ($derived_source)
1731 {
1732 prog_error ($lang->name . " has automatic dependency tracking")
1733 if $lang->autodep ne 'no';
1734 # Make sure this new source file is handled next. That will
1735 # make it appear to be at the right place in the list.
1736 unshift (@files, $object);
1737 # Distribute derived sources unless the source they are
1738 # derived from is not.
1739 &push_dist_common ($object)
1740 unless ($topparent =~ /^(?:nobase_)?nodist_/);
1741 next;
1742 }
1744 $linkers_used{$linker} = 1;
1746 push (@result, $object);
1748 if (! defined $object_map{$object})
1749 {
1750 my @dep_list = ();
1751 $object_map{$object} = $full;
1753 # If resulting object is in subdir, we need to make
1754 # sure the subdir exists at build time.
1755 if ($object =~ /\//)
1756 {
1757 # FIXME: check that $DIRECTORY is somewhere in the
1758 # project
1760 # For Java, the way we're handling it right now, a
1761 # `..' component doesn't make sense.
1762 if ($lang->name eq 'java' && $object =~ /(\/|^)\.\.\//)
1763 {
1764 err_am "`$full' should not contain a `..' component";
1765 }
1767 # Make sure object is removed by `make mostlyclean'.
1768 $compile_clean_files{$object} = MOSTLY_CLEAN;
1769 # If we have a libtool object then we also must remove
1770 # the ordinary .o.
1771 if ($object =~ /\.lo$/)
1772 {
1773 (my $xobj = $object) =~ s,lo$,\$(OBJEXT),;
1774 $compile_clean_files{$xobj} = MOSTLY_CLEAN;
1776 # Remove any libtool object in this directory.
1777 $libtool_clean_directories{$directory} = 1;
1778 }
1780 push (@dep_list, require_build_directory ($directory));
1782 # If we're generating dependencies, we also want
1783 # to make sure that the appropriate subdir of the
1784 # .deps directory is created.
1785 push (@dep_list,
1786 require_build_directory ($directory . '/$(DEPDIR)'))
1787 unless option 'no-dependencies';
1788 }
1790 &pretty_print_rule ($object . ':', "\t", @dep_list)
1791 if scalar @dep_list > 0;
1792 }
1794 # Transform .o or $o file into .P file (for automatic
1795 # dependency code).
1796 if ($lang && $lang->autodep ne 'no')
1797 {
1798 my $depfile = $object;
1799 $depfile =~ s/\.([^.]*)$/.P$1/;
1800 $depfile =~ s/\$\(OBJEXT\)$/o/;
1801 $dep_files{dirname ($depfile) . '/$(DEPDIR)/'
1802 . basename ($depfile)} = 1;
1803 }
1804 }
1806 return @result;
1807 }
1810 # $LINKER
1811 # define_objects_from_sources ($VAR, $OBJVAR, $NODEFINE, $ONE_FILE,
1812 # $OBJ, $PARENT, $TOPPARENT, $WHERE, %TRANSFORM)
1813 # ---------------------------------------------------------------------------
1814 # Define an _OBJECTS variable for a _SOURCES variable (or subvariable)
1815 #
1816 # Arguments are:
1817 # $VAR is the name of the _SOURCES variable
1818 # $OBJVAR is the name of the _OBJECTS variable if known (otherwise
1819 # it will be generated and returned).
1820 # $NODEFINE is a boolean: if true, $OBJVAR will not be defined (but
1821 # work done to determine the linker will be).
1822 # $ONE_FILE is the canonical (transformed) name of object to build
1823 # $OBJ is the object extension (i.e. either `.o' or `.lo').
1824 # $TOPPARENT is the _SOURCES variable being processed.
1825 # $WHERE context into which this definition is done
1826 # %TRANSFORM extra arguments to pass to file_contents when producing
1827 # rules
1828 #
1829 # Result is a pair ($LINKER, $OBJVAR):
1830 # $LINKER is a boolean, true if a linker is needed to deal with the objects
1831 sub define_objects_from_sources ($$$$$$$%)
1832 {
1833 my ($var, $objvar, $nodefine, $one_file,
1834 $obj, $topparent, $where, %transform) = @_;
1836 my $needlinker = "";
1838 transform_variable_recursively
1839 ($var, $objvar, 'am__objects', $nodefine, $where,
1840 # The transform code to run on each filename.
1841 sub {
1842 my ($subvar, $val, $cond, $full_cond) = @_;
1843 my @trans = handle_single_transform ($subvar, $topparent,
1844 $one_file, $obj, $val,
1845 %transform);
1846 $needlinker = "true" if @trans;
1847 return @trans;
1848 });
1850 return $needlinker;
1851 }
1854 # handle_source_transform ($CANON_TARGET, $TARGET, $OBJEXT, $WHERE, %TRANSFORM)
1855 # -----------------------------------------------------------------------------
1856 # Handle SOURCE->OBJECT transform for one program or library.
1857 # Arguments are:
1858 # canonical (transformed) name of target to build
1859 # actual target of object to build
1860 # object extension (i.e. either `.o' or `$o'.
1861 # location of the source variable
1862 # extra arguments to pass to file_contents when producing rules
1863 # Return result is name of linker variable that must be used.
1864 # Empty return means just use `LINK'.
1865 sub handle_source_transform ($$$$%)
1866 {
1867 # one_file is canonical name. unxformed is given name. obj is
1868 # object extension.
1869 my ($one_file, $unxformed, $obj, $where, %transform) = @_;
1871 my ($linker) = '';
1873 # No point in continuing if _OBJECTS is defined.
1874 return if reject_var ($one_file . '_OBJECTS',
1875 $one_file . '_OBJECTS should not be defined');
1877 my %used_pfx = ();
1878 my $needlinker;
1879 %linkers_used = ();
1880 foreach my $prefix ('', 'EXTRA_', 'dist_', 'nodist_',
1881 'dist_EXTRA_', 'nodist_EXTRA_')
1882 {
1883 my $varname = $prefix . $one_file . "_SOURCES";
1884 my $var = var $varname;
1885 next unless $var;
1887 # We are going to define _OBJECTS variables using the prefix.
1888 # Then we glom them all together. So we can't use the null
1889 # prefix here as we need it later.
1890 my $xpfx = ($prefix eq '') ? 'am_' : $prefix;
1892 # Keep track of which prefixes we saw.
1893 $used_pfx{$xpfx} = 1
1894 unless $prefix =~ /EXTRA_/;
1896 push @sources, "\$($varname)";
1897 push @dist_sources, shadow_unconditionally ($varname, $where)
1898 unless (option ('no-dist') || $prefix =~ /^nodist_/);
1900 $needlinker |=
1901 define_objects_from_sources ($varname,
1902 $xpfx . $one_file . '_OBJECTS',
1903 $prefix =~ /EXTRA_/,
1904 $one_file, $obj, $varname, $where,
1905 %transform);
1906 }
1907 if ($needlinker)
1908 {
1909 $linker ||= &resolve_linker (%linkers_used);
1910 }
1912 my @keys = sort keys %used_pfx;
1913 if (scalar @keys == 0)
1914 {
1915 # The default source for libfoo.la is libfoo.c, but for
1916 # backward compatibility we first look at libfoo_la.c
1917 my $old_default_source = "$one_file.c";
1918 (my $default_source = $unxformed) =~ s,(\.[^./\\]*)?$,.c,;
1919 if ($old_default_source ne $default_source
1920 && (rule $old_default_source
1921 || rule '$(srcdir)/' . $old_default_source
1922 || rule '${srcdir}/' . $old_default_source
1923 || -f $old_default_source))
1924 {
1925 my $loc = $where->clone;
1926 $loc->pop_context;
1927 msg ('obsolete', $loc,
1928 "the default source for `$unxformed' has been changed "
1929 . "to `$default_source'.\n(Using `$old_default_source' for "
1930 . "backward compatibility.)");
1931 $default_source = $old_default_source;
1932 }
1933 # If a rule exists to build this source with a $(srcdir)
1934 # prefix, use that prefix in our variables too. This is for
1935 # the sake of BSD Make.
1936 if (rule '$(srcdir)/' . $default_source
1937 || rule '${srcdir}/' . $default_source)
1938 {
1939 $default_source = '$(srcdir)/' . $default_source;
1940 }
1942 &define_variable ($one_file . "_SOURCES", $default_source, $where);
1943 push (@sources, $default_source);
1944 push (@dist_sources, $default_source);
1946 %linkers_used = ();
1947 my (@result) =
1948 handle_single_transform ($one_file . '_SOURCES',
1949 $one_file . '_SOURCES',
1950 $one_file, $obj,
1951 $default_source, %transform);
1952 $linker ||= &resolve_linker (%linkers_used);
1953 define_pretty_variable ($one_file . '_OBJECTS', TRUE, $where, @result);
1954 }
1955 else
1956 {
1957 @keys = map { '$(' . $_ . $one_file . '_OBJECTS)' } @keys;
1958 define_pretty_variable ($one_file . '_OBJECTS', TRUE, $where, @keys);
1959 }
1961 # If we want to use `LINK' we must make sure it is defined.
1962 if ($linker eq '')
1963 {
1964 $need_link = 1;
1965 }
1967 return $linker;
1968 }
1971 # handle_lib_objects ($XNAME, $VAR)
1972 # ---------------------------------
1973 # Special-case ALLOCA and LIBOBJS substitutions in _LDADD or _LIBADD variables.
1974 # Also, generate _DEPENDENCIES variable if appropriate.
1975 # Arguments are:
1976 # transformed name of object being built, or empty string if no object
1977 # name of _LDADD/_LIBADD-type variable to examine
1978 # Returns 1 if LIBOBJS seen, 0 otherwise.
1979 sub handle_lib_objects
1980 {
1981 my ($xname, $varname) = @_;
1983 my $var = var ($varname);
1984 prog_error "handle_lib_objects: `$varname' undefined"
1985 unless $var;
1986 prog_error "handle_lib_objects: unexpected variable name `$varname'"
1987 unless $varname =~ /^(.*)(?:LIB|LD)ADD$/;
1988 my $prefix = $1 || 'AM_';
1990 my $seen_libobjs = 0;
1991 my $flagvar = 0;
1993 transform_variable_recursively
1994 ($varname, $xname . '_DEPENDENCIES', 'am__DEPENDENCIES',
1995 ! $xname, INTERNAL,
1996 # Transformation function, run on each filename.
1997 sub {
1998 my ($subvar, $val, $cond, $full_cond) = @_;
2000 if ($val =~ /^-/)
2001 {
2002 # Skip -lfoo and -Ldir silently; these are explicitly allowed.
2003 if ($val !~ /^-[lL]/ &&
2004 # Skip -dlopen and -dlpreopen; these are explicitly allowed
2005 # for Libtool libraries or programs. (Actually we are a bit
2006 # laxest here since this code also applies to non-libtool
2007 # libraries or programs, for which -dlopen and -dlopreopen
2008 # are pure non-sence. Diagnosting this doesn't seems very
2009 # important: the developer will quickly get complaints from
2010 # the linker.)
2011 $val !~ /^-dl(?:pre)?open$/ &&
2012 # Only get this error once.
2013 ! $flagvar)
2014 {
2015 $flagvar = 1;
2016 # FIXME: should display a stack of nested variables
2017 # as context when $var != $subvar.
2018 err_var ($var, "linker flags such as `$val' belong in "
2019 . "`${prefix}LDFLAGS");
2020 }
2021 return ();
2022 }
2023 elsif ($val !~ /^\@.*\@$/)
2024 {
2025 # Assume we have a file of some sort, and output it into the
2026 # dependency variable. Autoconf substitutions are not output;
2027 # rarely is a new dependency substituted into e.g. foo_LDADD
2028 # -- but bad things (e.g. -lX11) are routinely substituted.
2029 # Note that LIBOBJS and ALLOCA are exceptions to this rule,
2030 # and handled specially below.
2031 return $val;
2032 }
2033 elsif ($val =~ /^\@(LT)?LIBOBJS\@$/)
2034 {
2035 handle_LIBOBJS ($subvar, $cond, $1);
2036 $seen_libobjs = 1;
2037 return $val;
2038 }
2039 elsif ($val =~ /^\@(LT)?ALLOCA\@$/)
2040 {
2041 handle_ALLOCA ($subvar, $cond, $1);
2042 return $val;
2043 }
2044 else
2045 {
2046 return ();
2047 }
2048 });
2050 return $seen_libobjs;
2051 }
2053 sub handle_LIBOBJS ($$$)
2054 {
2055 my ($var, $cond, $lt) = @_;
2056 $lt ||= '';
2057 my $myobjext = ($1 ? 'l' : '') . 'o';
2059 $var->requires_variables ("\@${lt}LIBOBJS\@ used", $lt . 'LIBOBJS')
2060 if ! keys %libsources;
2062 foreach my $iter (keys %libsources)
2063 {
2064 if ($iter =~ /\.[cly]$/)
2065 {
2066 &saw_extension ($&);
2067 &saw_extension ('.c');
2068 }
2070 if ($iter =~ /\.h$/)
2071 {
2072 require_file_with_macro ($cond, $var, FOREIGN, $iter);
2073 }
2074 elsif ($iter ne 'alloca.c')
2075 {
2076 my $rewrite = $iter;
2077 $rewrite =~ s/\.c$/.P$myobjext/;
2078 $dep_files{'$(DEPDIR)/' . $rewrite} = 1;
2079 $rewrite = "^" . quotemeta ($iter) . "\$";
2080 # Only require the file if it is not a built source.
2081 my $bs = var ('BUILT_SOURCES');
2082 if (! $bs || ! grep (/$rewrite/, $bs->value_as_list_recursive))
2083 {
2084 require_file_with_macro ($cond, $var, FOREIGN, $iter);
2085 }
2086 }
2087 }
2088 }
2090 sub handle_ALLOCA ($$$)
2091 {
2092 my ($var, $cond, $lt) = @_;
2093 my $myobjext = ($lt ? 'l' : '') . 'o';
2094 $lt ||= '';
2095 $var->requires_variables ("\@${lt}ALLOCA\@ used", $lt . 'ALLOCA');
2096 $dep_files{'$(DEPDIR)/alloca.P' . $myobjext} = 1;
2097 require_file_with_macro ($cond, $var, FOREIGN, 'alloca.c');
2098 &saw_extension ('c');
2099 }
2101 # Canonicalize the input parameter
2102 sub canonicalize
2103 {
2104 my ($string) = @_;
2105 $string =~ tr/A-Za-z0-9_\@/_/c;
2106 return $string;
2107 }
2109 # Canonicalize a name, and check to make sure the non-canonical name
2110 # is never used. Returns canonical name. Arguments are name and a
2111 # list of suffixes to check for.
2112 sub check_canonical_spelling
2113 {
2114 my ($name, @suffixes) = @_;
2116 my $xname = &canonicalize ($name);
2117 if ($xname ne $name)
2118 {
2119 foreach my $xt (@suffixes)
2120 {
2121 reject_var ("$name$xt", "use `$xname$xt', not `$name$xt'");
2122 }
2123 }
2125 return $xname;
2126 }
2129 # handle_compile ()
2130 # -----------------
2131 # Set up the compile suite.
2132 sub handle_compile ()
2133 {
2134 return
2135 unless $get_object_extension_was_run;
2137 # Boilerplate.
2138 my $default_includes = '';
2139 if (! option 'nostdinc')
2140 {
2141 $default_includes = ' -I. -I$(srcdir)';
2143 my $var = var 'CONFIG_HEADER';
2144 if ($var)
2145 {
2146 foreach my $hdr (split (' ', $var->variable_value))
2147 {
2148 $default_includes .= ' -I' . dirname ($hdr);
2149 }
2150 }
2151 }
2153 my (@mostly_rms, @dist_rms);
2154 foreach my $item (sort keys %compile_clean_files)
2155 {
2156 if ($compile_clean_files{$item} == MOSTLY_CLEAN)
2157 {
2158 push (@mostly_rms, "\t-rm -f $item");
2159 }
2160 elsif ($compile_clean_files{$item} == DIST_CLEAN)
2161 {
2162 push (@dist_rms, "\t-rm -f $item");
2163 }
2164 else
2165 {
2166 prog_error 'invalid entry in %compile_clean_files';
2167 }
2168 }
2170 my ($coms, $vars, $rules) =
2171 &file_contents_internal (1, "$libdir/am/compile.am",
2172 new Automake::Location,
2173 ('DEFAULT_INCLUDES' => $default_includes,
2174 'MOSTLYRMS' => join ("\n", @mostly_rms),
2175 'DISTRMS' => join ("\n", @dist_rms)));
2176 $output_vars .= $vars;
2177 $output_rules .= "$coms$rules";
2179 # Check for automatic de-ANSI-fication.
2180 if (option 'ansi2knr')
2181 {
2182 my ($ansi2knr_filename, $ansi2knr_where) = @{option 'ansi2knr'};
2183 my $ansi2knr_dir = '';
2185 require_variables ($ansi2knr_where, "option `ansi2knr' is used",
2186 TRUE, "ANSI2KNR", "U");
2188 # topdir is where ansi2knr should be.
2189 if ($ansi2knr_filename eq 'ansi2knr')
2190 {
2191 # Only require ansi2knr files if they should appear in
2192 # this directory.
2193 require_file ($ansi2knr_where, FOREIGN,
2194 'ansi2knr.c', 'ansi2knr.1');
2196 # ansi2knr needs to be built before subdirs, so unshift it.
2197 unshift (@all, '$(ANSI2KNR)');
2198 }
2199 else
2200 {
2201 $ansi2knr_dir = dirname ($ansi2knr_filename);
2202 }
2204 $output_rules .= &file_contents ('ansi2knr',
2205 new Automake::Location,
2206 'ANSI2KNR-DIR' => $ansi2knr_dir);
2208 }
2209 }
2211 # handle_libtool ()
2212 # -----------------
2213 # Handle libtool rules.
2214 sub handle_libtool
2215 {
2216 return unless var ('LIBTOOL');
2218 # Libtool requires some files, but only at top level.
2219 require_conf_file_with_macro (TRUE, 'LIBTOOL', FOREIGN, @libtool_files)
2220 if $relative_dir eq '.';
2222 my @libtool_rms;
2223 foreach my $item (sort keys %libtool_clean_directories)
2224 {
2225 my $dir = ($item eq '.') ? '' : "$item/";
2226 # .libs is for Unix, _libs for DOS.
2227 push (@libtool_rms, "\t-rm -rf ${dir}.libs ${dir}_libs");
2228 }
2230 # Output the libtool compilation rules.
2231 $output_rules .= &file_contents ('libtool',
2232 new Automake::Location,
2233 LTRMS => join ("\n", @libtool_rms));
2234 }
2236 # handle_programs ()
2237 # ------------------
2238 # Handle C programs.
2239 sub handle_programs
2240 {
2241 my @proglist = &am_install_var ('progs', 'PROGRAMS',
2242 'bin', 'sbin', 'libexec', 'pkglib',
2243 'noinst', 'check');
2244 return if ! @proglist;
2246 my $seen_global_libobjs =
2247 var ('LDADD') && &handle_lib_objects ('', 'LDADD');
2249 foreach my $pair (@proglist)
2250 {
2251 my ($where, $one_file) = @$pair;
2253 my $seen_libobjs = 0;
2254 my $obj = &get_object_extension ($one_file);
2256 # Strip any $(EXEEXT) suffix the user might have added, or this
2257 # will confuse &handle_source_transform and &check_canonical_spelling.
2258 # We'll add $(EXEEXT) back later anyway.
2259 $one_file =~ s/\$\(EXEEXT\)$//;
2261 # Canonicalize names and check for misspellings.
2262 my $xname = &check_canonical_spelling ($one_file, '_LDADD', '_LDFLAGS',
2263 '_SOURCES', '_OBJECTS',
2264 '_DEPENDENCIES');
2266 $where->push_context ("while processing program `$one_file'");
2267 $where->set (INTERNAL->get);
2269 my $linker = &handle_source_transform ($xname, $one_file, $obj, $where,
2270 NONLIBTOOL => 1, LIBTOOL => 0);
2272 if (var ($xname . "_LDADD"))
2273 {
2274 $seen_libobjs = &handle_lib_objects ($xname, $xname . '_LDADD');
2275 }
2276 else
2277 {
2278 # User didn't define prog_LDADD override. So do it.
2279 &define_variable ($xname . '_LDADD', '$(LDADD)', $where);
2281 # This does a bit too much work. But we need it to
2282 # generate _DEPENDENCIES when appropriate.
2283 if (var ('LDADD'))
2284 {
2285 $seen_libobjs = &handle_lib_objects ($xname, 'LDADD');
2286 }
2287 }
2289 reject_var ($xname . '_LIBADD',
2290 "use `${xname}_LDADD', not `${xname}_LIBADD'");
2292 set_seen ($xname . '_DEPENDENCIES');
2293 set_seen ($xname . '_LDFLAGS');
2295 # Determine program to use for link.
2296 my $xlink;
2297 if (var ($xname . '_LINK'))
2298 {
2299 $xlink = $xname . '_LINK';
2300 }
2301 else
2302 {
2303 $xlink = $linker ? $linker : 'LINK';
2304 }
2306 # If the resulting program lies into a subdirectory,
2307 # make sure this directory will exist.
2308 my $dirstamp = require_build_directory_maybe ($one_file);
2310 $output_rules .= &file_contents ('program',
2311 $where,
2312 PROGRAM => $one_file,
2313 XPROGRAM => $xname,
2314 XLINK => $xlink,
2315 DIRSTAMP => $dirstamp,
2316 EXEEXT => '$(EXEEXT)');
2318 if ($seen_libobjs || $seen_global_libobjs)
2319 {
2320 if (var ($xname . '_LDADD'))
2321 {
2322 &check_libobjs_sources ($xname, $xname . '_LDADD');
2323 }
2324 elsif (var ('LDADD'))
2325 {
2326 &check_libobjs_sources ($xname, 'LDADD');
2327 }
2328 }
2329 }
2330 }
2333 # handle_libraries ()
2334 # -------------------
2335 # Handle libraries.
2336 sub handle_libraries
2337 {
2338 my @liblist = &am_install_var ('libs', 'LIBRARIES',
2339 'lib', 'pkglib', 'noinst', 'check');
2340 return if ! @liblist;
2342 my @prefix = am_primary_prefixes ('LIBRARIES', 0, 'lib', 'pkglib',
2343 'noinst', 'check');
2345 if (@prefix)
2346 {
2347 my $var = rvar ($prefix[0] . '_LIBRARIES');
2348 $var->requires_variables ('library used', 'RANLIB');
2349 }
2351 &define_variable ('AR', 'ar', INTERNAL);
2352 &define_variable ('ARFLAGS', 'cru', INTERNAL);
2354 foreach my $pair (@liblist)
2355 {
2356 my ($where, $onelib) = @$pair;
2358 my $seen_libobjs = 0;
2359 # Check that the library fits the standard naming convention.
2360 if (basename ($onelib) !~ /^lib.*\.a/)
2361 {
2362 error $where, "`$onelib' is not a standard library name";
2363 }
2365 $where->push_context ("while processing library `$onelib'");
2366 $where->set (INTERNAL->get);
2368 my $obj = &get_object_extension ($onelib);
2370 # Canonicalize names and check for misspellings.
2371 my $xlib = &check_canonical_spelling ($onelib, '_LIBADD', '_SOURCES',
2372 '_OBJECTS', '_DEPENDENCIES',
2373 '_AR');
2375 if (! var ($xlib . '_AR'))
2376 {
2377 &define_variable ($xlib . '_AR', '$(AR) $(ARFLAGS)', $where);
2378 }
2380 # Generate support for conditional object inclusion in
2381 # libraries.
2382 if (var ($xlib . '_LIBADD'))
2383 {
2384 if (&handle_lib_objects ($xlib, $xlib . '_LIBADD'))
2385 {
2386 $seen_libobjs = 1;
2387 }
2388 }
2389 else
2390 {
2391 &define_variable ($xlib . "_LIBADD", '', $where);
2392 }
2394 reject_var ($xlib . '_LDADD',
2395 "use `${xlib}_LIBADD', not `${xlib}_LDADD'");
2397 # Make sure we at look at this.
2398 set_seen ($xlib . '_DEPENDENCIES');
2400 &handle_source_transform ($xlib, $onelib, $obj, $where,
2401 NONLIBTOOL => 1, LIBTOOL => 0);
2403 # If the resulting library lies into a subdirectory,
2404 # make sure this directory will exist.
2405 my $dirstamp = require_build_directory_maybe ($onelib);
2407 $output_rules .= &file_contents ('library',
2408 $where,
2409 LIBRARY => $onelib,
2410 XLIBRARY => $xlib,
2411 DIRSTAMP => $dirstamp);
2413 if ($seen_libobjs)
2414 {
2415 if (var ($xlib . '_LIBADD'))
2416 {
2417 &check_libobjs_sources ($xlib, $xlib . '_LIBADD');
2418 }
2419 }
2420 }
2421 }
2424 # handle_ltlibraries ()
2425 # ---------------------
2426 # Handle shared libraries.
2427 sub handle_ltlibraries
2428 {
2429 my @liblist = &am_install_var ('ltlib', 'LTLIBRARIES',
2430 'noinst', 'lib', 'pkglib', 'check');
2431 return if ! @liblist;
2433 my @prefix = am_primary_prefixes ('LTLIBRARIES', 0, 'lib', 'pkglib',
2434 'noinst', 'check');
2436 if (@prefix)
2437 {
2438 my $var = rvar ($prefix[0] . '_LTLIBRARIES');
2439 $var->requires_variables ('Libtool library used', 'LIBTOOL');
2440 }
2442 my %instdirs = ();
2443 my %instconds = ();
2444 my %liblocations = (); # Location (in Makefile.am) of each library.
2446 foreach my $key (@prefix)
2447 {
2448 # Get the installation directory of each library.
2449 (my $dir = $key) =~ s/^nobase_//;
2450 my $var = rvar ($key . '_LTLIBRARIES');
2452 # We reject libraries which are installed in several places
2453 # in the same condition, because we can only specify one
2454 # `-rpath' option.
2455 $var->traverse_recursively
2456 (sub
2457 {
2458 my ($var, $val, $cond, $full_cond) = @_;
2459 my $hcond = $full_cond->human;
2460 my $where = $var->rdef ($cond)->location;
2461 # A library cannot be installed in different directory
2462 # in overlapping conditions.
2463 if (exists $instconds{$val})
2464 {
2465 my ($msg, $acond) =
2466 $instconds{$val}->ambiguous_p ($val, $full_cond);
2468 if ($msg)
2469 {
2470 error ($where, $msg, partial => 1);
2472 my $dirtxt = "installed in `$dir'";
2473 $dirtxt = "built for `$dir'"
2474 if $dir eq 'EXTRA' || $dir eq 'noinst' || $dir eq 'check';
2475 my $dircond =
2476 $full_cond->true ? "" : " in condition $hcond";
2478 error ($where, "`$val' should be $dirtxt$dircond ...",
2479 partial => 1);
2481 my $hacond = $acond->human;
2482 my $adir = $instdirs{$val}{$acond};
2483 my $adirtxt = "installed in `$adir'";
2484 $adirtxt = "built for `$adir'"
2485 if ($adir eq 'EXTRA' || $adir eq 'noinst'
2486 || $adir eq 'check');
2487 my $adircond = $acond->true ? "" : " in condition $hacond";
2489 my $onlyone = ($dir ne $adir) ?
2490 ("\nLibtool libraries can be built for only one "
2491 . "destination.") : "";
2493 error ($liblocations{$val}{$acond},
2494 "... and should also be $adirtxt$adircond.$onlyone");
2495 return;
2496 }
2497 }
2498 else
2499 {
2500 $instconds{$val} = new Automake::DisjConditions;
2501 }
2502 $instdirs{$val}{$full_cond} = $dir;
2503 $liblocations{$val}{$full_cond} = $where;
2504 $instconds{$val} = $instconds{$val}->merge ($full_cond);
2505 },
2506 sub
2507 {
2508 return ();
2509 },
2510 skip_ac_subst => 1);
2511 }
2513 foreach my $pair (@liblist)
2514 {
2515 my ($where, $onelib) = @$pair;
2517 my $seen_libobjs = 0;
2518 my $obj = &get_object_extension ($onelib);
2520 # Canonicalize names and check for misspellings.
2521 my $xlib = &check_canonical_spelling ($onelib, '_LIBADD', '_LDFLAGS',
2522 '_SOURCES', '_OBJECTS',
2523 '_DEPENDENCIES');
2525 # Check that the library fits the standard naming convention.
2526 my $libname_rx = "^lib.*\.la";
2527 my $ldvar = var ("${xlib}_LDFLAGS") || var ('AM_LDFLAGS');
2528 my $ldvar2 = var ('LDFLAGS');
2529 if (($ldvar && grep (/-module/, $ldvar->value_as_list_recursive))
2530 || ($ldvar2 && grep (/-module/, $ldvar2->value_as_list_recursive)))
2531 {
2532 # Relax name checking for libtool modules.
2533 $libname_rx = "\.la";
2534 }
2535 if (basename ($onelib) !~ /$libname_rx$/)
2536 {
2537 msg ('error-gnu/warn', $where,
2538 "`$onelib' is not a standard libtool library name");
2539 }
2541 $where->push_context ("while processing Libtool library `$onelib'");
2542 $where->set (INTERNAL->get);
2544 # Make sure we at look at these.
2545 set_seen ($xlib . '_LDFLAGS');
2546 set_seen ($xlib . '_DEPENDENCIES');
2548 # Generate support for conditional object inclusion in
2549 # libraries.
2550 if (var ($xlib . '_LIBADD'))
2551 {
2552 if (&handle_lib_objects ($xlib, $xlib . '_LIBADD'))
2553 {
2554 $seen_libobjs = 1;
2555 }
2556 }
2557 else
2558 {
2559 &define_variable ($xlib . "_LIBADD", '', $where);
2560 }
2562 reject_var ("${xlib}_LDADD",
2563 "use `${xlib}_LIBADD', not `${xlib}_LDADD'");
2566 my $linker = &handle_source_transform ($xlib, $onelib, $obj, $where,
2567 NONLIBTOOL => 0, LIBTOOL => 1);
2569 # Determine program to use for link.
2570 my $xlink;
2571 if (var ($xlib . '_LINK'))
2572 {
2573 $xlink = $xlib . '_LINK';
2574 }
2575 else
2576 {
2577 $xlink = $linker ? $linker : 'LINK';
2578 }
2580 my $rpathvar = "am_${xlib}_rpath";
2581 my $rpath = "\$($rpathvar)";
2582 foreach my $rcond ($instconds{$onelib}->conds)
2583 {
2584 my $val;
2585 if ($instdirs{$onelib}{$rcond} eq 'EXTRA'
2586 || $instdirs{$onelib}{$rcond} eq 'noinst'
2587 || $instdirs{$onelib}{$rcond} eq 'check')
2588 {
2589 # It's an EXTRA_ library, so we can't specify -rpath,
2590 # because we don't know where the library will end up.
2591 # The user probably knows, but generally speaking automake
2592 # doesn't -- and in fact configure could decide
2593 # dynamically between two different locations.
2594 $val = '';
2595 }
2596 else
2597 {
2598 $val = ('-rpath $(' . $instdirs{$onelib}{$rcond} . 'dir)');
2599 }
2600 if ($rcond->true)
2601 {
2602 # If $rcond is true there is only one condition and
2603 # there is no point defining an helper variable.
2604 $rpath = $val;
2605 }
2606 else
2607 {
2608 define_pretty_variable ($rpathvar, $rcond, INTERNAL, $val);
2609 }
2610 }
2612 # If the resulting library lies into a subdirectory,
2613 # make sure this directory will exist.
2614 my $dirstamp = require_build_directory_maybe ($onelib);
2616 # Remember to cleanup .libs/ in this directory.
2617 my $dirname = dirname $onelib;
2618 $libtool_clean_directories{$dirname} = 1;
2620 $output_rules .= &file_contents ('ltlibrary',
2621 $where,
2622 LTLIBRARY => $onelib,
2623 XLTLIBRARY => $xlib,
2624 RPATH => $rpath,
2625 XLINK => $xlink,
2626 DIRSTAMP => $dirstamp);
2627 if ($seen_libobjs)
2628 {
2629 if (var ($xlib . '_LIBADD'))
2630 {
2631 &check_libobjs_sources ($xlib, $xlib . '_LIBADD');
2632 }
2633 }
2634 }
2635 }
2637 # See if any _SOURCES variable were misspelled.
2638 sub check_typos ()
2639 {
2640 # It is ok if the user sets this particular variable.
2641 set_seen 'AM_LDFLAGS';
2643 foreach my $var (variables)
2644 {
2645 my $varname = $var->name;
2646 # A configure variable is always legitimate.
2647 next if exists $configure_vars{$varname};
2649 my $check = 0;
2650 foreach my $primary ('_SOURCES', '_LIBADD', '_LDADD', '_LDFLAGS',
2651 '_DEPENDENCIES')
2652 {
2653 if ($varname =~ /^(.*)$primary$/)
2654 {
2655 $check = $1;
2656 last;
2657 }
2658 }
2659 next unless $check;
2661 for my $cond ($var->conditions->conds)
2662 {
2663 msg_var ('syntax', $var, "variable `$varname' is defined but no"
2664 . " program or\nlibrary has `$check' as canonic name"
2665 . " (possible typo)")
2666 unless $var->rdef ($cond)->seen;
2667 }
2668 }
2669 }
2672 # Handle scripts.
2673 sub handle_scripts
2674 {
2675 # NOTE we no longer automatically clean SCRIPTS, because it is
2676 # useful to sometimes distribute scripts verbatim. This happens
2677 # e.g. in Automake itself.
2678 &am_install_var ('-candist', 'scripts', 'SCRIPTS',
2679 'bin', 'sbin', 'libexec', 'pkgdata',
2680 'noinst', 'check');
2681 }
2686 ## ------------------------ ##
2687 ## Handling Texinfo files. ##
2688 ## ------------------------ ##
2690 # ($OUTFILE, $VFILE, @CLEAN_FILES)
2691 # &scan_texinfo_file ($FILENAME)
2692 # ------------------------------
2693 # $OUTFILE - name of the info file produced by $FILENAME.
2694 # $VFILE - name of the version.texi file used (undef if none).
2695 # @CLEAN_FILES - list of byproducts (indexes etc.)
2696 sub scan_texinfo_file ($)
2697 {
2698 my ($filename) = @_;
2700 # Some of the following extensions are always created, no matter
2701 # whether indexes are used or not. Other (like cps, fns, ... pgs)
2702 # are only created when they are used. We used to scan $FILENAME
2703 # for their use, but that is not enough: they could be used in
2704 # included files. We can't scan included files because we don't
2705 # know the include path. Therefore we always erase these files, no
2706 # matter whether they are used or not.
2707 #
2708 # (tmp is only created if an @macro is used and a certain e-TeX
2709 # feature is not available.)
2710 my %clean_suffixes =
2711 map { $_ => 1 } (qw(aux log toc tmp
2712 cp cps
2713 fn fns
2714 ky kys
2715 vr vrs
2716 tp tps
2717 pg pgs)); # grep 'new.*index' texinfo.tex
2719 my $texi = new Automake::XFile "< $filename";
2720 verb "reading $filename";
2722 my ($outfile, $vfile);
2723 while ($_ = $texi->getline)
2724 {
2725 if (/^\@setfilename +(\S+)/)
2726 {
2727 # Honor only the first @setfilename. (It's possible to have
2728 # more occurrences later if the manual shows examples of how
2729 # to use @setfilename...)
2730 next if $outfile;
2732 $outfile = $1;
2733 if ($outfile =~ /\.(.+)$/ && $1 ne 'info')
2734 {
2735 error ("$filename:$.",
2736 "output `$outfile' has unrecognized extension");
2737 return;
2738 }
2739 }
2740 # A "version.texi" file is actually any file whose name matches
2741 # "vers*.texi".
2742 elsif (/^\@include\s+(vers[^.]*\.texi)\s*$/)
2743 {
2744 $vfile = $1;
2745 }
2747 # Try to find new or unused indexes.
2749 # Creating a new category of index.
2750 elsif (/^\@def(code)?index (\w+)/)
2751 {
2752 $clean_suffixes{$2} = 1;
2753 $clean_suffixes{"$2s"} = 1;
2754 }
2756 # Merging an index into an another.
2757 elsif (/^\@syn(code)?index (\w+) (\w+)/)
2758 {
2759 delete $clean_suffixes{"$2s"};
2760 $clean_suffixes{"$3s"} = 1;
2761 }
2763 }
2765 if (! $outfile)
2766 {
2767 err_am "`$filename' missing \@setfilename";
2768 return;
2769 }
2771 my $infobase = basename ($filename);
2772 $infobase =~ s/\.te?xi(nfo)?$//;
2773 return ($outfile, $vfile,
2774 map { "$infobase.$_" } (sort keys %clean_suffixes));
2775 }
2778 # ($DIRSTAMP, @CLEAN_FILES)
2779 # output_texinfo_build_rules ($SOURCE, $DEST, $INSRC, @DEPENDENCIES)
2780 # ------------------------------------------------------------------
2781 # SOURCE - the source Texinfo file
2782 # DEST - the destination Info file
2783 # INSRC - wether DEST should be built in the source tree
2784 # DEPENDENCIES - known dependencies
2785 sub output_texinfo_build_rules ($$$@)
2786 {
2787 my ($source, $dest, $insrc, @deps) = @_;
2789 # Split `a.texi' into `a' and `.texi'.
2790 my ($spfx, $ssfx) = ($source =~ /^(.*?)(\.[^.]*)?$/);
2791 my ($dpfx, $dsfx) = ($dest =~ /^(.*?)(\.[^.]*)?$/);
2793 $ssfx ||= "";
2794 $dsfx ||= "";
2796 # We can output two kinds of rules: the "generic" rules use Make
2797 # suffix rules and are appropriate when $source and $dest do not lie
2798 # in a sub-directory; the "specific" rules are needed in the other
2799 # case.
2800 #
2801 # The former are output only once (this is not really apparent here,
2802 # but just remember that some logic deeper in Automake will not
2803 # output the same rule twice); while the later need to be output for
2804 # each Texinfo source.
2805 my $generic;
2806 my $makeinfoflags;
2807 my $sdir = dirname $source;
2808 if ($sdir eq '.' && dirname ($dest) eq '.')
2809 {
2810 $generic = 1;
2811 $makeinfoflags = '-I $(srcdir)';
2812 }
2813 else
2814 {
2815 $generic = 0;
2816 $makeinfoflags = "-I $sdir -I \$(srcdir)/$sdir";
2817 }
2819 # A directory can contain two kinds of info files: some built in the
2820 # source tree, and some built in the build tree. The rules are
2821 # different in each case. However we cannot output two different
2822 # set of generic rules. Because in-source builds are more usual, we
2823 # use generic rules in this case and fall back to "specific" rules
2824 # for build-dir builds. (It should not be a problem to invert this
2825 # if needed.)
2826 $generic = 0 unless $insrc;
2828 # We cannot use a suffix rule to build info files with an empty
2829 # extension. Otherwise we would output a single suffix inference
2830 # rule, with separate dependencies, as in
2831 #
2832 # .texi:
2833 # $(MAKEINFO) ...
2834 # foo.info: foo.texi
2835 #
2836 # which confuse Solaris make. (See the Autoconf manual for
2837 # details.) Therefore we use a specific rule in this case. This
2838 # applies to info files only (dvi and pdf files always have an
2839 # extension).
2840 my $generic_info = ($generic && $dsfx) ? 1 : 0;
2842 # If the resulting file lie into a subdirectory,
2843 # make sure this directory will exist.
2844 my $dirstamp = require_build_directory_maybe ($dest);
2846 my $dipfx = ($insrc ? '$(srcdir)/' : '') . $dpfx;
2848 $output_rules .= file_contents ('texibuild',
2849 new Automake::Location,
2850 DEPS => "@deps",
2851 DEST_PREFIX => $dpfx,
2852 DEST_INFO_PREFIX => $dipfx,
2853 DEST_SUFFIX => $dsfx,
2854 DIRSTAMP => $dirstamp,
2855 GENERIC => $generic,
2856 GENERIC_INFO => $generic_info,
2857 INSRC => $insrc,
2858 MAKEINFOFLAGS => $makeinfoflags,
2859 SOURCE => ($generic
2860 ? '$<' : $source),
2861 SOURCE_INFO => ($generic_info
2862 ? '$<' : $source),
2863 SOURCE_REAL => $source,
2864 SOURCE_SUFFIX => $ssfx,
2865 );
2866 return ($dirstamp, "$dpfx.dvi", "$dpfx.pdf", "$dpfx.ps", "$dpfx.html");
2867 }
2870 # $TEXICLEANS
2871 # handle_texinfo_helper ($info_texinfos)
2872 # --------------------------------------
2873 # Handle all Texinfo source; helper for handle_texinfo.
2874 sub handle_texinfo_helper ($)
2875 {
2876 my ($info_texinfos) = @_;
2877 my (@infobase, @info_deps_list, @texi_deps);
2878 my %versions;
2879 my $done = 0;
2880 my @texi_cleans;
2882 # Build a regex matching user-cleaned files.
2883 my $d = var 'DISTCLEANFILES';
2884 my $c = var 'CLEANFILES';
2885 my @f = ();
2886 push @f, $d->value_as_list_recursive (inner_expand => 1) if $d;
2887 push @f, $c->value_as_list_recursive (inner_expand => 1) if $c;
2888 @f = map { s|[^A-Za-z_0-9*\[\]\-]|\\$&|g; s|\*|[^/]*|g; $_; } @f;
2889 my $user_cleaned_files = '^(?:' . join ('|', @f) . ')$';
2891 foreach my $texi
2892 ($info_texinfos->value_as_list_recursive (inner_expand => 1))
2893 {
2894 my $infobase = $texi;
2895 $infobase =~ s/\.(txi|texinfo|texi)$//;
2897 if ($infobase eq $texi)
2898 {
2899 # FIXME: report line number.
2900 err_am "texinfo file `$texi' has unrecognized extension";
2901 next;
2902 }
2904 push @infobase, $infobase;
2906 # If 'version.texi' is referenced by input file, then include
2907 # automatic versioning capability.
2908 my ($out_file, $vtexi, @clean_files) =
2909 scan_texinfo_file ("$relative_dir/$texi")
2910 or next;
2911 push (@texi_cleans, @clean_files);
2913 # If the Texinfo source is in a subdirectory, create the
2914 # resulting info in this subdirectory. If it is in the current
2915 # directory, try hard to not prefix "./" because it breaks the
2916 # generic rules.
2917 my $outdir = dirname ($texi) . '/';
2918 $outdir = "" if $outdir eq './';
2919 $out_file = $outdir . $out_file;
2921 # Until Automake 1.6.3, .info files were built in the
2922 # source tree. This was an obstacle to the support of
2923 # non-distributed .info files, and non-distributed .texi
2924 # files.
2925 #
2926 # * Non-distributed .texi files is important in some packages
2927 # where .texi files are built at make time, probably using
2928 # other binaries built in the package itself, maybe using
2929 # tools or information found on the build host. Because
2930 # these files are not distributed they are always rebuilt
2931 # at make time; they should therefore not lie in the source
2932 # directory. One plan was to support this using
2933 # nodist_info_TEXINFOS or something similar. (Doing this
2934 # requires some sanity checks. For instance Automake should
2935 # not allow:
2936 # dist_info_TEXINFO = foo.texi
2937 # nodist_foo_TEXINFO = included.texi
2938 # because a distributed file should never depend on a
2939 # non-distributed file.)
2940 #
2941 # * If .texi files are not distributed, then .info files should
2942 # not be distributed either. There are also cases where one
2943 # want to distribute .texi files, but do not want to
2944 # distribute the .info files. For instance the Texinfo package
2945 # distributes the tool used to build these files; it would
2946 # be a waste of space to distribute them. It's not clear
2947 # which syntax we should use to indicate that .info files should
2948 # not be distributed. Akim Demaille suggested that eventually
2949 # we switch to a new syntax:
2950 # | Maybe we should take some inspiration from what's already
2951 # | done in the rest of Automake. Maybe there is too much
2952 # | syntactic sugar here, and you want
2953 # | nodist_INFO = bar.info
2954 # | dist_bar_info_SOURCES = bar.texi
2955 # | bar_texi_DEPENDENCIES = foo.texi
2956 # | with a bit of magic to have bar.info represent the whole
2957 # | bar*info set. That's a lot more verbose that the current
2958 # | situation, but it is # not new, hence the user has less
2959 # | to learn.
2960 # |
2961 # | But there is still too much room for meaningless specs:
2962 # | nodist_INFO = bar.info
2963 # | dist_bar_info_SOURCES = bar.texi
2964 # | dist_PS = bar.ps something-written-by-hand.ps
2965 # | nodist_bar_ps_SOURCES = bar.texi
2966 # | bar_texi_DEPENDENCIES = foo.texi
2967 # | here bar.texi is dist_ in line 2, and nodist_ in 4.
2968 #
2969 # Back to the point, it should be clear that in order to support
2970 # non-distributed .info files, we need to build them in the
2971 # build tree, not in the source tree (non-distributed .texi
2972 # files are less of a problem, because we do not output build
2973 # rules for them). In Automake 1.7 .info build rules have been
2974 # largely cleaned up so that .info files get always build in the
2975 # build tree, even when distributed. The idea was that
2976 # (1) if during a VPATH build the .info file was found to be
2977 # absent or out-of-date (in the source tree or in the
2978 # build tree), Make would rebuild it in the build tree.
2979 # If an up-to-date source-tree of the .info file existed,
2980 # make would not rebuild it in the build tree.
2981 # (2) having two copies of .info files, one in the source tree
2982 # and one (newer) in the build tree is not a problem
2983 # because `make dist' always pick files in the build tree
2984 # first.
2985 # However it turned out the be a bad idea for several reasons:
2986 # * Tru64, OpenBSD, and FreeBSD (not NetBSD) Make do not behave
2987 # like GNU Make on point (1) above. These implementations
2988 # of Make would always rebuild .info files in the build
2989 # tree, even if such files were up to date in the source
2990 # tree. Consequently, it was impossible to perform a VPATH
2991 # build of a package containing Texinfo files using these
2992 # Make implementations.
2993 # (Refer to the Autoconf Manual, section "Limitation of
2994 # Make", paragraph "VPATH", item "target lookup", for
2995 # an account of the differences between these
2996 # implementations.)
2997 # * The GNU Coding Standards require these files to be built
2998 # in the source-tree (when they are distributed, that is).
2999 # * Keeping a fresher copy of distributed files in the
3000 # build tree can be annoying during development because
3001 # - if the files is kept under CVS, you really want it
3002 # to be updated in the source tree
3003 # - it is confusing that `make distclean' does not erase
3004 # all files in the build tree.
3005 #
3006 # Consequently, starting with Automake 1.8, .info files are
3007 # built in the source tree again. Because we still plan to
3008 # support non-distributed .info files at some point, we
3009 # have a single variable ($INSRC) that controls whether
3010 # the current .info file must be built in the source tree
3011 # or in the build tree. Actually this variable is switched
3012 # off for .info files that appear to be cleaned; this is
3013 # for backward compatibility with package such as Texinfo,
3014 # which do things like
3015 # info_TEXINFOS = texinfo.txi info-stnd.texi info.texi
3016 # DISTCLEANFILES = texinfo texinfo-* info*.info*
3017 # # Do not create info files for distribution.
3018 # dist-info:
3019 # in order not to distribute .info files.
3020 my $insrc = ($out_file =~ $user_cleaned_files) ? 0 : 1;
3022 my $soutdir = '$(srcdir)/' . $outdir;
3023 $outdir = $soutdir if $insrc;
3025 # If user specified file_TEXINFOS, then use that as explicit
3026 # dependency list.
3027 @texi_deps = ();
3028 push (@texi_deps, "$soutdir$vtexi") if $vtexi;
3030 my $canonical = canonicalize ($infobase);
3031 if (var ($canonical . "_TEXINFOS"))
3032 {
3033 push (@texi_deps, '$(' . $canonical . '_TEXINFOS)');
3034 push_dist_common ('$(' . $canonical . '_TEXINFOS)');
3035 }
3037 my ($dirstamp, @cfiles) =
3038 output_texinfo_build_rules ($texi, $out_file, $insrc, @texi_deps);
3039 push (@texi_cleans, @cfiles);
3041 push (@info_deps_list, $out_file);
3043 # If a vers*.texi file is needed, emit the rule.
3044 if ($vtexi)
3045 {
3046 err_am ("`$vtexi', included in `$texi', "
3047 . "also included in `$versions{$vtexi}'")
3048 if defined $versions{$vtexi};
3049 $versions{$vtexi} = $texi;
3051 # We number the stamp-vti files. This is doable since the
3052 # actual names don't matter much. We only number starting
3053 # with the second one, so that the common case looks nice.
3054 my $vti = ($done ? $done : 'vti');
3055 ++$done;
3057 # This is ugly, but it is our historical practice.
3058 if ($config_aux_dir_set_in_configure_ac)
3059 {
3060 require_conf_file_with_macro (TRUE, 'info_TEXINFOS', FOREIGN,
3061 'mdate-sh');
3062 }
3063 else
3064 {
3065 require_file_with_macro (TRUE, 'info_TEXINFOS',
3066 FOREIGN, 'mdate-sh');
3067 }
3069 my $conf_dir;
3070 if ($config_aux_dir_set_in_configure_ac)
3071 {
3072 $conf_dir = "$am_config_aux_dir/";
3073 }
3074 else
3075 {
3076 $conf_dir = '$(srcdir)/';
3077 }
3078 $output_rules .= file_contents ('texi-vers',
3079 new Automake::Location,
3080 TEXI => $texi,
3081 VTI => $vti,
3082 STAMPVTI => "${soutdir}stamp-$vti",
3083 VTEXI => "$soutdir$vtexi",
3084 MDDIR => $conf_dir,
3085 DIRSTAMP => $dirstamp);
3086 }
3087 }
3089 # Handle location of texinfo.tex.
3090 my $need_texi_file = 0;
3091 my $texinfodir;
3092 if (var ('TEXINFO_TEX'))
3093 {
3094 # The user defined TEXINFO_TEX so assume he knows what he is
3095 # doing.
3096 $texinfodir = ('$(srcdir)/'
3097 . dirname (variable_value ('TEXINFO_TEX')));
3098 }
3099 elsif (option 'cygnus')
3100 {
3101 $texinfodir = '$(top_srcdir)/../texinfo';
3102 define_variable ('TEXINFO_TEX', "$texinfodir/texinfo.tex", INTERNAL);
3103 }
3104 elsif ($config_aux_dir_set_in_configure_ac)
3105 {
3106 $texinfodir = $am_config_aux_dir;
3107 define_variable ('TEXINFO_TEX', "$texinfodir/texinfo.tex", INTERNAL);
3108 $need_texi_file = 2; # so that we require_conf_file later
3109 }
3110 else
3111 {
3112 $texinfodir = '$(srcdir)';
3113 $need_texi_file = 1;
3114 }
3115 define_variable ('am__TEXINFO_TEX_DIR', $texinfodir, INTERNAL);
3117 push (@dist_targets, 'dist-info');
3119 if (! option 'no-installinfo')
3120 {
3121 # Make sure documentation is made and installed first. Use
3122 # $(INFO_DEPS), not 'info', because otherwise recursive makes
3123 # get run twice during "make all".
3124 unshift (@all, '$(INFO_DEPS)');
3125 }
3127 define_files_variable ("DVIS", @infobase, 'dvi', INTERNAL);
3128 define_files_variable ("PDFS", @infobase, 'pdf', INTERNAL);
3129 define_files_variable ("PSS", @infobase, 'ps', INTERNAL);
3130 define_files_variable ("HTMLS", @infobase, 'html', INTERNAL);
3132 # This next isn't strictly needed now -- the places that look here
3133 # could easily be changed to look in info_TEXINFOS. But this is
3134 # probably better, in case noinst_TEXINFOS is ever supported.
3135 define_variable ("TEXINFOS", variable_value ('info_TEXINFOS'), INTERNAL);
3137 # Do some error checking. Note that this file is not required
3138 # when in Cygnus mode; instead we defined TEXINFO_TEX explicitly
3139 # up above.
3140 if ($need_texi_file && ! option 'no-texinfo.tex')
3141 {
3142 if ($need_texi_file > 1)
3143 {
3144 require_conf_file_with_macro (TRUE, 'info_TEXINFOS', FOREIGN,
3145 'texinfo.tex');
3146 }
3147 else
3148 {
3149 require_file_with_macro (TRUE, 'info_TEXINFOS', FOREIGN,
3150 'texinfo.tex');
3151 }
3152 }
3154 return makefile_wrap ("", "\t ", @texi_cleans);
3155 }
3158 # handle_texinfo ()
3159 # -----------------
3160 # Handle all Texinfo source.
3161 sub handle_texinfo ()
3162 {
3163 reject_var 'TEXINFOS', "`TEXINFOS' is an anachronism; use `info_TEXINFOS'";
3164 # FIXME: I think this is an obsolete future feature name.
3165 reject_var 'html_TEXINFOS', "HTML generation not yet supported";
3167 my $info_texinfos = var ('info_TEXINFOS');
3168 my $texiclean = "";
3169 if ($info_texinfos)
3170 {
3171 $texiclean = handle_texinfo_helper ($info_texinfos);
3172 }
3173 $output_rules .= file_contents ('texinfos',
3174 new Automake::Location,
3175 TEXICLEAN => $texiclean,
3176 'LOCAL-TEXIS' => !!$info_texinfos);
3177 }
3180 # Handle any man pages.
3181 sub handle_man_pages
3182 {
3183 reject_var 'MANS', "`MANS' is an anachronism; use `man_MANS'";
3185 # Find all the sections in use. We do this by first looking for
3186 # "standard" sections, and then looking for any additional
3187 # sections used in man_MANS.
3188 my (%sections, %vlist);
3189 # We handle nodist_ for uniformity. man pages aren't distributed
3190 # by default so it isn't actually very important.
3191 foreach my $pfx ('', 'dist_', 'nodist_')
3192 {
3193 # Add more sections as needed.
3194 foreach my $section ('0'..'9', 'n', 'l')
3195 {
3196 my $varname = $pfx . 'man' . $section . '_MANS';
3197 if (var ($varname))
3198 {
3199 $sections{$section} = 1;
3200 $varname = '$(' . $varname . ')';
3201 $vlist{$varname} = 1;
3203 &push_dist_common ($varname)
3204 if $pfx eq 'dist_';
3205 }
3206 }
3208 my $varname = $pfx . 'man_MANS';
3209 my $var = var ($varname);
3210 if ($var)
3211 {
3212 foreach ($var->value_as_list_recursive)
3213 {
3214 # A page like `foo.1c' goes into man1dir.
3215 if (/\.([0-9a-z])([a-z]*)$/)
3216 {
3217 $sections{$1} = 1;
3218 }
3219 }
3221 $varname = '$(' . $varname . ')';
3222 $vlist{$varname} = 1;
3223 &push_dist_common ($varname)
3224 if $pfx eq 'dist_';
3225 }
3226 }
3228 return unless %sections;
3230 # Now for each section, generate an install and uninstall rule.
3231 # Sort sections so output is deterministic.
3232 foreach my $section (sort keys %sections)
3233 {
3234 $output_rules .= &file_contents ('mans',
3235 new Automake::Location,
3236 SECTION => $section);
3237 }
3239 my @mans = sort keys %vlist;
3240 $output_vars .= file_contents ('mans-vars',
3241 new Automake::Location,
3242 MANS => "@mans");
3244 push (@all, '$(MANS)')
3245 unless option 'no-installman';
3246 }
3248 # Handle DATA variables.
3249 sub handle_data
3250 {
3251 &am_install_var ('-noextra', '-candist', 'data', 'DATA',
3252 'data', 'sysconf', 'sharedstate', 'localstate',
3253 'pkgdata', 'lisp', 'noinst', 'check');
3254 }
3256 # Handle TAGS.
3257 sub handle_tags
3258 {
3259 my @tag_deps = ();
3260 my @ctag_deps = ();
3261 if (var ('SUBDIRS'))
3262 {
3263 $output_rules .= ("tags-recursive:\n"
3264 . "\tlist=\'\$(SUBDIRS)\'; for subdir in \$\$list; do \\\n"
3265 # Never fail here if a subdir fails; it
3266 # isn't important.
3267 . "\t test \"\$\$subdir\" = . || (cd \$\$subdir"
3268 . " && \$(MAKE) \$(AM_MAKEFLAGS) tags); \\\n"
3269 . "\tdone\n");
3270 push (@tag_deps, 'tags-recursive');
3271 &depend ('.PHONY', 'tags-recursive');
3273 $output_rules .= ("ctags-recursive:\n"
3274 . "\tlist=\'\$(SUBDIRS)\'; for subdir in \$\$list; do \\\n"
3275 # Never fail here if a subdir fails; it
3276 # isn't important.
3277 . "\t test \"\$\$subdir\" = . || (cd \$\$subdir"
3278 . " && \$(MAKE) \$(AM_MAKEFLAGS) ctags); \\\n"
3279 . "\tdone\n");
3280 push (@ctag_deps, 'ctags-recursive');
3281 &depend ('.PHONY', 'ctags-recursive');
3282 }
3284 if (&saw_sources_p (1)
3285 || var ('ETAGS_ARGS')
3286 || @tag_deps)
3287 {
3288 my @config;
3289 foreach my $spec (@config_headers)
3290 {
3291 my ($out, @ins) = split_config_file_spec ($spec);
3292 foreach my $in (@ins)
3293 {
3294 # If the config header source is in this directory,
3295 # require it.
3296 push @config, basename ($in)
3297 if $relative_dir eq dirname ($in);
3298 }
3299 }
3300 $output_rules .= &file_contents ('tags',
3301 new Automake::Location,
3302 CONFIG => "@config",
3303 TAGSDIRS => "@tag_deps",
3304 CTAGSDIRS => "@ctag_deps");
3306 set_seen 'TAGS_DEPENDENCIES';
3307 }
3308 elsif (reject_var ('TAGS_DEPENDENCIES',
3309 "doesn't make sense to define `TAGS_DEPENDENCIES'"
3310 . "without\nsources or `ETAGS_ARGS'"))
3311 {
3312 }
3313 else
3314 {
3315 # Every Makefile must define some sort of TAGS rule.
3316 # Otherwise, it would be possible for a top-level "make TAGS"
3317 # to fail because some subdirectory failed.
3318 $output_rules .= "tags: TAGS\nTAGS:\n\n";
3319 # Ditto ctags.
3320 $output_rules .= "ctags: CTAGS\nCTAGS:\n\n";
3321 }
3322 }
3324 # Handle multilib support.
3325 sub handle_multilib
3326 {
3327 if ($seen_multilib && $relative_dir eq '.')
3328 {
3329 $output_rules .= &file_contents ('multilib', new Automake::Location);
3330 push (@all, 'all-multi');
3331 }
3332 }
3335 # $BOOLEAN
3336 # &for_dist_common ($A, $B)
3337 # -------------------------
3338 # Subroutine for &handle_dist: sort files to dist.
3339 #
3340 # We put README first because it then becomes easier to make a
3341 # Usenet-compliant shar file (in these, README must be first).
3342 #
3343 # FIXME: do more ordering of files here.
3344 sub for_dist_common
3345 {
3346 return 0
3347 if $a eq $b;
3348 return -1
3349 if $a eq 'README';
3350 return 1
3351 if $b eq 'README';
3352 return $a cmp $b;
3353 }
3356 # handle_dist
3357 # -----------
3358 # Handle 'dist' target.
3359 sub handle_dist ()
3360 {
3361 return if option 'no-dist';
3363 # At least one of the archive formats must be enabled.
3364 if ($relative_dir eq '.')
3365 {
3366 my $archive_defined = option 'no-dist-gzip' ? 0 : 1;
3367 $archive_defined ||=
3368 grep { option "dist-$_" } ('shar', 'zip', 'tarZ', 'bzip2');
3369 error (option 'no-dist-gzip',
3370 "no-dist-gzip specified but no dist-* specified, "
3371 . "at least one archive format must be enabled")
3372 unless $archive_defined;
3373 }
3375 # Look for common files that should be included in distribution.
3376 # If the aux dir is set, and it does not have a Makefile.am, then
3377 # we check for these files there as well.
3378 my $check_aux = 0;
3379 if ($relative_dir eq '.'
3380 && $config_aux_dir_set_in_configure_ac)
3381 {
3382 if (! &is_make_dir ($config_aux_dir))
3383 {
3384 $check_aux = 1;
3385 }
3386 }
3387 foreach my $cfile (@common_files)
3388 {
3389 if (-f ($relative_dir . "/" . $cfile)
3390 # The file might be absent, but if it can be built it's ok.
3391 || rule $cfile)
3392 {
3393 &push_dist_common ($cfile);
3394 }
3396 # Don't use `elsif' here because a file might meaningfully
3397 # appear in both directories.
3398 if ($check_aux && -f "$config_aux_dir/$cfile")
3399 {
3400 &push_dist_common ("$config_aux_dir/$cfile")
3401 }
3402 }
3404 # We might copy elements from $configure_dist_common to
3405 # %dist_common if we think we need to. If the file appears in our
3406 # directory, we would have discovered it already, so we don't
3407 # check that. But if the file is in a subdir without a Makefile,
3408 # we want to distribute it here if we are doing `.'. Ugly!
3409 if ($relative_dir eq '.')
3410 {
3411 foreach my $file (split (' ' , $configure_dist_common))
3412 {
3413 push_dist_common ($file)
3414 unless is_make_dir (dirname ($file));
3415 }
3416 }
3418 # Files to distributed. Don't use ->value_as_list_recursive
3419 # as it recursively expands `$(dist_pkgdata_DATA)' etc.
3420 my @dist_common = split (' ', rvar ('DIST_COMMON')->variable_value);
3421 @dist_common = uniq (sort for_dist_common (@dist_common));
3422 variable_delete 'DIST_COMMON';
3423 define_pretty_variable ('DIST_COMMON', TRUE, INTERNAL, @dist_common);
3425 # Now that we've processed DIST_COMMON, disallow further attempts
3426 # to set it.
3427 $handle_dist_run = 1;
3429 # Scan EXTRA_DIST to see if we need to distribute anything from a
3430 # subdir. If so, add it to the list. I didn't want to do this
3431 # originally, but there were so many requests that I finally
3432 # relented.
3433 my $extra_dist = var ('EXTRA_DIST');
3434 if ($extra_dist)
3435 {
3436 # FIXME: This should be fixed to work with conditions. That
3437 # will require only making the entries in %dist_dirs under the
3438 # appropriate condition. This is meaningful if the nature of
3439 # the distribution should depend upon the configure options
3440 # used.
3441 foreach ($extra_dist->value_as_list_recursive (skip_ac_subst => 1))
3442 {
3443 next unless s,/+[^/]+$,,;
3444 $dist_dirs{$_} = 1
3445 unless $_ eq '.';
3446 }
3447 }
3449 # We have to check DIST_COMMON for extra directories in case the
3450 # user put a source used in AC_OUTPUT into a subdir.
3451 my $topsrcdir = backname ($relative_dir);
3452 foreach (rvar ('DIST_COMMON')->value_as_list_recursive (skip_ac_subst => 1))
3453 {
3454 s/\$\(top_srcdir\)/$topsrcdir/;
3455 s/\$\(srcdir\)/./;
3456 # Strip any leading `./'.
3457 s,^(:?\./+)*,,;
3458 next unless s,/+[^/]+$,,;
3459 $dist_dirs{$_} = 1
3460 unless $_ eq '.';
3461 }
3463 # Rule to check whether a distribution is viable.
3464 my %transform = ('DISTCHECK-HOOK' => !! rule 'distcheck-hook',
3465 'GETTEXT' => $seen_gettext && !$seen_gettext_external);
3467 # Prepend $(distdir) to each directory given.
3468 my %rewritten = map { '$(distdir)/' . "$_" => 1 } keys %dist_dirs;
3469 $transform{'DISTDIRS'} = join (' ', sort keys %rewritten);
3471 # If we have SUBDIRS, create all dist subdirectories and do
3472 # recursive build.
3473 my $subdirs = var ('SUBDIRS');
3474 if ($subdirs)
3475 {
3476 # If SUBDIRS is conditionally defined, then set DIST_SUBDIRS
3477 # to all possible directories, and use it. If DIST_SUBDIRS is
3478 # defined, just use it.
3479 my $dist_subdir_name;
3480 # Note that we check DIST_SUBDIRS first on purpose, so that
3481 # we don't call has_conditional_contents for now reason.
3482 # (In the past one project used so many conditional subdirectories
3483 # that calling has_conditional_contents on SUBDIRS caused
3484 # automake to grow to 150Mb -- this should not happen with
3485 # the current implementation of has_conditional_contents,
3486 # but it's more efficient to avoid the call anyway.)
3487 if (var ('DIST_SUBDIRS'))
3488 {
3489 $dist_subdir_name = 'DIST_SUBDIRS';
3490 }
3491 elsif ($subdirs->has_conditional_contents)
3492 {
3493 $dist_subdir_name = 'DIST_SUBDIRS';
3494 define_pretty_variable
3495 ('DIST_SUBDIRS', TRUE, INTERNAL,
3496 uniq ($subdirs->value_as_list_recursive));
3497 }
3498 else
3499 {
3500 $dist_subdir_name = 'SUBDIRS';
3501 # We always define this because that is what `distclean'
3502 # wants.
3503 define_pretty_variable ('DIST_SUBDIRS', TRUE, INTERNAL,
3504 '$(SUBDIRS)');
3505 }
3507 $transform{'DIST_SUBDIR_NAME'} = $dist_subdir_name;
3508 }
3510 # If the target `dist-hook' exists, make sure it is run. This
3511 # allows users to do random weird things to the distribution
3512 # before it is packaged up.
3513 push (@dist_targets, 'dist-hook')
3514 if rule 'dist-hook';
3515 $transform{'DIST-TARGETS'} = join(' ', @dist_targets);
3517 my $flm = option ('filename-length-max');
3518 my $filename_filter = $flm ? '.' x $flm->[1] : '';
3520 $output_rules .= &file_contents ('distdir',
3521 new Automake::Location,
3522 %transform,
3523 FILENAME_FILTER => $filename_filter);
3524 }
3527 # &handle_subdirs ()
3528 # ------------------
3529 # Handle subdirectories.
3530 sub handle_subdirs ()
3531 {
3532 my $subdirs = var ('SUBDIRS');
3533 return
3534 unless $subdirs;
3536 my @subdirs = $subdirs->value_as_list_recursive;
3537 my @dsubdirs = ();
3538 my $dsubdirs = var ('DIST_SUBDIRS');
3539 @dsubdirs = $dsubdirs->value_as_list_recursive
3540 if $dsubdirs;
3542 # If an `obj/' directory exists, BSD make will enter it before
3543 # reading `Makefile'. Hence the `Makefile' in the current directory
3544 # will not be read.
3545 #
3546 # % cat Makefile
3547 # all:
3548 # echo Hello
3549 # % cat obj/Makefile
3550 # all:
3551 # echo World
3552 # % make # GNU make
3553 # echo Hello
3554 # Hello
3555 # % pmake # BSD make
3556 # echo World
3557 # World
3558 msg_var ('portability', 'SUBDIRS',
3559 "naming a subdirectory `obj' causes troubles with BSD make")
3560 if grep ($_ eq 'obj', @subdirs);
3561 msg_var ('portability', 'DIST_SUBDIRS',
3562 "naming a subdirectory `obj' causes troubles with BSD make")
3563 if grep ($_ eq 'obj', @dsubdirs);
3565 # Make sure each directory mentioned in SUBDIRS actually exists.
3566 foreach my $dir (@subdirs)
3567 {
3568 # Skip directories substituted by configure.
3569 next if $dir =~ /^\@.*\@$/;
3571 if (! -d $relative_dir . '/' . $dir)
3572 {
3573 err_var ('SUBDIRS', "required directory $relative_dir/$dir "
3574 . "does not exist");
3575 next;
3576 }
3578 err_var 'SUBDIRS', "directory should not contain `/'"
3579 if $dir =~ /\//;
3580 }
3582 $output_rules .= &file_contents ('subdirs', new Automake::Location);
3583 rvar ('RECURSIVE_TARGETS')->rdef (TRUE)->{'pretty'} = VAR_SORTED; # Gross!
3584 }
3587 # ($REGEN, @DEPENDENCIES)
3588 # &scan_aclocal_m4
3589 # ----------------
3590 # If aclocal.m4 creation is automated, return the list of its dependencies.
3591 sub scan_aclocal_m4 ()
3592 {
3593 my $regen_aclocal = 0;
3595 set_seen 'CONFIG_STATUS_DEPENDENCIES';
3596 set_seen 'CONFIGURE_DEPENDENCIES';
3598 if (-f 'aclocal.m4')
3599 {
3600 &define_variable ("ACLOCAL_M4", '$(top_srcdir)/aclocal.m4', INTERNAL);
3602 my $aclocal = new Automake::XFile "< aclocal.m4";
3603 my $line = $aclocal->getline;
3604 $regen_aclocal = $line =~ 'generated automatically by aclocal';
3605 }
3607 my @ac_deps = ();
3609 if (set_seen ('ACLOCAL_M4_SOURCES'))
3610 {
3611 push (@ac_deps, '$(ACLOCAL_M4_SOURCES)');
3612 msg_var ('obsolete', 'ACLOCAL_M4_SOURCES',
3613 "`ACLOCAL_M4_SOURCES' is obsolete.\n"
3614 . "It should be safe to simply remove it.");
3615 }
3617 # Note that it might be possible that aclocal.m4 doesn't exist but
3618 # should be auto-generated. This case probably isn't very
3619 # important.
3621 return ($regen_aclocal, @ac_deps);
3622 }
3625 # @DEPENDENCIES
3626 # &prepend_srcdir (@INPUTS)
3627 # -------------------------
3628 # Prepend $(srcdir) or $(top_srcdir) to all @INPUTS. The idea is that
3629 # if an input file has a directory part the same as the current
3630 # directory, then the directory part is simply replaced by $(srcdir).
3631 # But if the directory part is different, then $(top_srcdir) is
3632 # prepended.
3633 sub prepend_srcdir (@)
3634 {
3635 my (@inputs) = @_;
3636 my @newinputs;
3638 foreach my $single (@inputs)
3639 {
3640 if (dirname ($single) eq $relative_dir)
3641 {
3642 push (@newinputs, '$(srcdir)/' . basename ($single));
3643 }
3644 else
3645 {
3646 push (@newinputs, '$(top_srcdir)/' . $single);
3647 }
3648 }
3649 return @newinputs;
3650 }
3652 # @DEPENDENCIES
3653 # rewrite_inputs_into_dependencies ($OUTPUT, @INPUTS)
3654 # ---------------------------------------------------
3655 # Compute a list of dependencies appropriate for the rebuild
3656 # rule of
3657 # AC_CONFIG_FILES($OUTPUT:$INPUT[0]:$INPUTS[1]:...)
3658 # Also distribute $INPUTs which are not build by another AC_CONFIG_FILES.
3659 sub rewrite_inputs_into_dependencies ($@)
3660 {
3661 my ($file, @inputs) = @_;
3662 my @res = ();
3664 for my $i (@inputs)
3665 {
3666 if (exists $ac_config_files_location{$i})
3667 {
3668 my $di = dirname $i;
3669 if ($di eq $relative_dir)
3670 {
3671 $i = basename $i;
3672 }
3673 # In the top-level Makefile we do not use $(top_builddir), because
3674 # we are already there, and since the targets are built without
3675 # a $(top_builddir), it helps BSD Make to match them with
3676 # dependencies.
3677 elsif ($relative_dir ne '.')
3678 {
3679 $i = '$(top_builddir)/' . $i;
3680 }
3681 }
3682 else
3683 {
3684 msg ('error', $ac_config_files_location{$file},
3685 "required file `$i' not found")
3686 unless exists $output_files{$i} || -f $i;
3687 ($i) = prepend_srcdir ($i);
3688 push_dist_common ($i);
3689 }
3690 push @res, $i;
3691 }
3692 return @res;
3693 }
3697 # &handle_configure ($MAKEFILE_AM, $MAKEFILE_IN, $MAKEFILE, @INPUTS)
3698 # ------------------------------------------------------------------
3699 # Handle remaking and configure stuff.
3700 # We need the name of the input file, to do proper remaking rules.
3701 sub handle_configure ($$$@)
3702 {
3703 my ($makefile_am, $makefile_in, $makefile, @inputs) = @_;
3705 prog_error 'empty @inputs'
3706 unless @inputs;
3708 my ($rel_makefile_am, $rel_makefile_in) = prepend_srcdir ($makefile_am,
3709 $makefile_in);
3710 my $rel_makefile = basename $makefile;
3712 my $colon_infile = ':' . join (':', @inputs);
3713 $colon_infile = '' if $colon_infile eq ":$makefile.in";
3714 my @rewritten = rewrite_inputs_into_dependencies ($makefile, @inputs);
3715 my ($regen_aclocal_m4, @aclocal_m4_deps) = scan_aclocal_m4;
3716 define_pretty_variable ('am__aclocal_m4_deps', TRUE, INTERNAL,
3717 @configure_deps, @aclocal_m4_deps,
3718 '$(top_srcdir)/' . $configure_ac);
3719 my @configuredeps = ('$(am__aclocal_m4_deps)', '$(CONFIGURE_DEPENDENCIES)');
3720 push @configuredeps, '$(ACLOCAL_M4)' if -f 'aclocal.m4';
3721 define_pretty_variable ('am__configure_deps', TRUE, INTERNAL,
3722 @configuredeps);
3724 $output_rules .= file_contents
3725 ('configure',
3726 new Automake::Location,
3727 MAKEFILE => $rel_makefile,
3728 'MAKEFILE-DEPS' => "@rewritten",
3729 'CONFIG-MAKEFILE' => ($relative_dir eq '.') ? '$@' : '$(subdir)/$@',
3730 'MAKEFILE-IN' => $rel_makefile_in,
3731 'MAKEFILE-IN-DEPS' => "@include_stack",
3732 'MAKEFILE-AM' => $rel_makefile_am,
3733 STRICTNESS => global_option 'cygnus'
3734 ? 'cygnus' : $strictness_name,
3735 'USE-DEPS' => global_option 'no-dependencies'
3736 ? ' --ignore-deps' : '',
3737 'MAKEFILE-AM-SOURCES' => "$makefile$colon_infile",
3738 'REGEN-ACLOCAL-M4' => $regen_aclocal_m4);
3740 if ($relative_dir eq '.')
3741 {
3742 &push_dist_common ('acconfig.h')
3743 if -f 'acconfig.h';
3744 }
3746 # If we have a configure header, require it.
3747 my $hdr_index = 0;
3748 my @distclean_config;
3749 foreach my $spec (@config_headers)
3750 {
3751 $hdr_index += 1;
3752 # $CONFIG_H_PATH: config.h from top level.
3753 my ($config_h_path, @ins) = split_config_file_spec ($spec);
3754 my $config_h_dir = dirname ($config_h_path);
3756 # If the header is in the current directory we want to build
3757 # the header here. Otherwise, if we're at the topmost
3758 # directory and the header's directory doesn't have a
3759 # Makefile, then we also want to build the header.
3760 if ($relative_dir eq $config_h_dir
3761 || ($relative_dir eq '.' && ! &is_make_dir ($config_h_dir)))
3762 {
3763 my ($cn_sans_dir, $stamp_dir);
3764 if ($relative_dir eq $config_h_dir)
3765 {
3766 $cn_sans_dir = basename ($config_h_path);
3767 $stamp_dir = '';
3768 }
3769 else
3770 {
3771 $cn_sans_dir = $config_h_path;
3772 if ($config_h_dir eq '.')
3773 {
3774 $stamp_dir = '';
3775 }
3776 else
3777 {
3778 $stamp_dir = $config_h_dir . '/';
3779 }
3780 }
3782 # This will also distribute all inputs.
3783 @ins = rewrite_inputs_into_dependencies ($config_h_path, @ins);
3785 # Header defined and in this directory.
3786 my @files;
3787 if (-f $config_h_path . '.top')
3788 {
3789 push (@files, "$cn_sans_dir.top");
3790 }
3791 if (-f $config_h_path . '.bot')
3792 {
3793 push (@files, "$cn_sans_dir.bot");
3794 }
3796 push_dist_common (@files);
3798 # For now, acconfig.h can only appear in the top srcdir.
3799 if (-f 'acconfig.h')
3800 {
3801 push (@files, '$(top_srcdir)/acconfig.h');
3802 }
3804 my $stamp = "${stamp_dir}stamp-h${hdr_index}";
3805 $output_rules .=
3806 file_contents ('remake-hdr',
3807 new Automake::Location,
3808 FILES => "@files",
3809 CONFIG_H => $cn_sans_dir,
3810 CONFIG_HIN => $ins[0],
3811 CONFIG_H_DEPS => "@ins",
3812 CONFIG_H_PATH => $config_h_path,
3813 STAMP => "$stamp");
3815 push @distclean_config, $cn_sans_dir, $stamp;
3816 }
3817 }
3819 $output_rules .= file_contents ('clean-hdr',
3820 new Automake::Location,
3821 FILES => "@distclean_config")
3822 if @distclean_config;
3824 # Distribute and define mkinstalldirs only if it is already present
3825 # in the package, for backward compatibility (some people my still
3826 # use $(mkinstalldirs)).
3827 my $mkidpath = "$config_aux_dir/mkinstalldirs";
3828 if (-f $mkidpath)
3829 {
3830 # Use require_file so that any existingscript gets updated
3831 # by --force-missing.
3832 require_conf_file ($mkidpath, FOREIGN, 'mkinstalldirs');
3833 define_variable ('mkinstalldirs',
3834 "\$(SHELL) $am_config_aux_dir/mkinstalldirs", INTERNAL);
3835 }
3836 else
3837 {
3838 define_variable ('mkinstalldirs', '$(mkdir_p)', INTERNAL);
3839 }
3841 reject_var ('CONFIG_HEADER',
3842 "`CONFIG_HEADER' is an anachronism; now determined "
3843 . "automatically\nfrom `$configure_ac'");
3845 my @config_h;
3846 foreach my $spec (@config_headers)
3847 {
3848 my ($out, @ins) = split_config_file_spec ($spec);
3849 # Generate CONFIG_HEADER define.
3850 if ($relative_dir eq dirname ($out))
3851 {
3852 push @config_h, basename ($out);
3853 }
3854 else
3855 {
3856 push @config_h, "\$(top_builddir)/$out";
3857 }
3858 }
3859 define_variable ("CONFIG_HEADER", "@config_h", INTERNAL)
3860 if @config_h;
3862 # Now look for other files in this directory which must be remade
3863 # by config.status, and generate rules for them.
3864 my @actual_other_files = ();
3865 foreach my $lfile (@other_input_files)
3866 {
3867 my $file;
3868 my @inputs;
3869 if ($lfile =~ /^([^:]*):(.*)$/)
3870 {
3871 # This is the ":" syntax of AC_OUTPUT.
3872 $file = $1;
3873 @inputs = split (':', $2);
3874 }
3875 else
3876 {
3877 # Normal usage.
3878 $file = $lfile;
3879 @inputs = $file . '.in';
3880 }
3882 # Automake files should not be stored in here, but in %MAKE_LIST.
3883 prog_error ("$lfile in \@other_input_files\n"
3884 . "\@other_input_files = (@other_input_files)")
3885 if -f $file . '.am';
3887 my $local = basename ($file);
3889 # Make sure the dist directory for each input file is created.
3890 # We only have to do this at the topmost level though. This
3891 # is a bit ugly but it easier than spreading out the logic,
3892 # especially in cases like AC_OUTPUT(foo/out:bar/in), where
3893 # there is no Makefile in bar/.
3894 if ($relative_dir eq '.')
3895 {
3896 foreach (@inputs)
3897 {
3898 $dist_dirs{dirname ($_)} = 1;
3899 }
3900 }
3902 # We skip files that aren't in this directory. However, if
3903 # the file's directory does not have a Makefile, and we are
3904 # currently doing `.', then we create a rule to rebuild the
3905 # file in the subdir.
3906 my $fd = dirname ($file);
3907 if ($fd ne $relative_dir)
3908 {
3909 if ($relative_dir eq '.' && ! &is_make_dir ($fd))
3910 {
3911 $local = $file;
3912 }
3913 else
3914 {
3915 next;
3916 }
3917 }
3919 my @rewritten_inputs = rewrite_inputs_into_dependencies ($file, @inputs);
3921 $output_rules .= ($local . ': '
3922 . '$(top_builddir)/config.status '
3923 . "@rewritten_inputs\n"
3924 . "\t"
3925 . 'cd $(top_builddir) && '
3926 . '$(SHELL) ./config.status '
3927 . ($relative_dir eq '.' ? '' : '$(subdir)/')
3928 . '$@'
3929 . "\n");
3930 push (@actual_other_files, $local);
3931 }
3933 # For links we should clean destinations and distribute sources.
3934 foreach my $spec (@config_links)
3935 {
3936 my ($link, $file) = split /:/, $spec;
3937 # Some people do AC_CONFIG_LINKS($computed). We only handle
3938 # the DEST:SRC form.
3939 next unless $file;
3940 my $where = $ac_config_files_location{$link};
3942 # Skip destinations that contain shell variables.
3943 if ($link !~ /\$/)
3944 {
3945 # We skip links that aren't in this directory. However, if
3946 # the link's directory does not have a Makefile, and we are
3947 # currently doing `.', then we add the link to CONFIG_CLEAN_FILES
3948 # in `.'s Makefile.in.
3949 my $local = basename ($link);
3950 my $fd = dirname ($link);
3951 if ($fd ne $relative_dir)
3952 {
3953 if ($relative_dir eq '.' && ! &is_make_dir ($fd))
3954 {
3955 $local = $link;
3956 }
3957 else
3958 {
3959 $local = undef;
3960 }
3961 }
3962 push @actual_other_files, $local if $local;
3963 }
3965 # Do not process sources that contain shell variables.
3966 if ($file !~ /\$/)
3967 {
3968 my $fd = dirname ($file);
3970 # Make sure the dist directory for each input file is created.
3971 # We only have to do this at the topmost level though.
3972 if ($relative_dir eq '.')
3973 {
3974 $dist_dirs{$fd} = 1;
3975 }
3977 # We distribute files that are in this directory.
3978 # At the top-level (`.') we also distribute files whose
3979 # directory does not have a Makefile.
3980 if (($fd eq $relative_dir)
3981 || ($relative_dir eq '.' && ! &is_make_dir ($fd)))
3982 {
3983 # The following will distribute $file as a side-effect when
3984 # it is appropriate (i.e., when $file is not already an output).
3985 # We do not need the result, just the side-effect.
3986 rewrite_inputs_into_dependencies ($link, $file);
3987 }
3988 }
3989 }
3991 # These files get removed by "make distclean".
3992 define_pretty_variable ('CONFIG_CLEAN_FILES', TRUE, INTERNAL,
3993 @actual_other_files);
3994 }
3996 # Handle C headers.
3997 sub handle_headers
3998 {
3999 my @r = &am_install_var ('-defaultdist', 'header', 'HEADERS', 'include',
4000 'oldinclude', 'pkginclude',
4001 'noinst', 'check');
4002 foreach (@r)
4003 {
4004 next unless $_->[1] =~ /\..*$/;
4005 &saw_extension ($&);
4006 }
4007 }
4009 sub handle_gettext
4010 {
4011 return if ! $seen_gettext || $relative_dir ne '.';
4013 my $subdirs = var 'SUBDIRS';
4015 if (! $subdirs)
4016 {
4017 err_ac "AM_GNU_GETTEXT used but SUBDIRS not defined";
4018 return;
4019 }
4021 # Perform some sanity checks to help users get the right setup.
4022 # We disable these tests when po/ doesn't exist in order not to disallow
4023 # unusual gettext setups.
4024 #
4025 # Bruno Haible:
4026 # | The idea is:
4027 # |
4028 # | 1) If a package doesn't have a directory po/ at top level, it
4029 # | will likely have multiple po/ directories in subpackages.
4030 # |
4031 # | 2) It is useful to warn for the absence of intl/ if AM_GNU_GETTEXT
4032 # | is used without 'external'. It is also useful to warn for the
4033 # | presence of intl/ if AM_GNU_GETTEXT([external]) is used. Both
4034 # | warnings apply only to the usual layout of packages, therefore
4035 # | they should both be disabled if no po/ directory is found at
4036 # | top level.
4038 if (-d 'po')
4039 {
4040 my @subdirs = $subdirs->value_as_list_recursive;
4042 msg_var ('syntax', $subdirs,
4043 "AM_GNU_GETTEXT used but `po' not in SUBDIRS")
4044 if ! grep ($_ eq 'po', @subdirs);
4046 # intl/ is not required when AM_GNU_GETTEXT is called with
4047 # the `external' option.
4048 msg_var ('syntax', $subdirs,
4049 "AM_GNU_GETTEXT used but `intl' not in SUBDIRS")
4050 if (! $seen_gettext_external
4051 && ! grep ($_ eq 'intl', @subdirs));
4053 # intl/ should not be used with AM_GNU_GETTEXT([external])
4054 msg_var ('syntax', $subdirs,
4055 "`intl' should not be in SUBDIRS when "
4056 . "AM_GNU_GETTEXT([external]) is used")
4057 if ($seen_gettext_external && grep ($_ eq 'intl', @subdirs));
4058 }
4060 require_file ($ac_gettext_location, GNU, 'ABOUT-NLS');
4061 }
4063 # Handle footer elements.
4064 sub handle_footer
4065 {
4066 # NOTE don't use define_pretty_variable here, because
4067 # $contents{...} is already defined.
4068 $output_vars .= 'SOURCES = ' . variable_value ('SOURCES') . "\n\n"
4069 if variable_value ('SOURCES');
4071 reject_rule ('.SUFFIXES',
4072 "use variable `SUFFIXES', not target `.SUFFIXES'");
4074 # Note: AIX 4.1 /bin/make will fail if any suffix rule appears
4075 # before .SUFFIXES. So we make sure that .SUFFIXES appears before
4076 # anything else, by sticking it right after the default: target.
4077 $output_header .= ".SUFFIXES:\n";
4078 my $suffixes = var 'SUFFIXES';
4079 my @suffixes = Automake::Rule::suffixes;
4080 if (@suffixes || $suffixes)
4081 {
4082 # Make sure SUFFIXES has unique elements. Sort them to ensure
4083 # the output remains consistent. However, $(SUFFIXES) is
4084 # always at the start of the list, unsorted. This is done
4085 # because make will choose rules depending on the ordering of
4086 # suffixes, and this lets the user have some control. Push
4087 # actual suffixes, and not $(SUFFIXES). Some versions of make
4088 # do not like variable substitutions on the .SUFFIXES line.
4089 my @user_suffixes = ($suffixes
4090 ? $suffixes->value_as_list_recursive : ());
4092 my %suffixes = map { $_ => 1 } @suffixes;
4093 delete @suffixes{@user_suffixes};
4095 $output_header .= (".SUFFIXES: "
4096 . join (' ', @user_suffixes, sort keys %suffixes)
4097 . "\n");
4098 }
4100 $output_trailer .= file_contents ('footer', new Automake::Location);
4101 }
4104 # Generate `make install' rules.
4105 sub handle_install ()
4106 {
4107 $output_rules .= &file_contents
4108 ('install',
4109 new Automake::Location,
4110 maybe_BUILT_SOURCES => (set_seen ('BUILT_SOURCES')
4111 ? (" \$(BUILT_SOURCES)\n"
4112 . "\t\$(MAKE) \$(AM_MAKEFLAGS)")
4113 : ''),
4114 'installdirs-local' => (rule 'installdirs-local'
4115 ? ' installdirs-local' : ''),
4116 am__installdirs => variable_value ('am__installdirs') || '');
4117 }
4120 # Deal with all and all-am.
4121 sub handle_all ($)
4122 {
4123 my ($makefile) = @_;
4125 # Output `all-am'.
4127 # Put this at the beginning for the sake of non-GNU makes. This
4128 # is still wrong if these makes can run parallel jobs. But it is
4129 # right enough.
4130 unshift (@all, basename ($makefile));
4132 foreach my $spec (@config_headers)
4133 {
4134 my ($out, @ins) = split_config_file_spec ($spec);
4135 push (@all, basename ($out))
4136 if dirname ($out) eq $relative_dir;
4137 }
4139 # Install `all' hooks.
4140 if (rule "all-local")
4141 {
4142 push (@all, "all-local");
4143 &depend ('.PHONY', "all-local");
4144 }
4146 &pretty_print_rule ("all-am:", "\t\t", @all);
4147 &depend ('.PHONY', 'all-am', 'all');
4150 # Output `all'.
4152 my @local_headers = ();
4153 push @local_headers, '$(BUILT_SOURCES)'
4154 if var ('BUILT_SOURCES');
4155 foreach my $spec (@config_headers)
4156 {
4157 my ($out, @ins) = split_config_file_spec ($spec);
4158 push @local_headers, basename ($out)
4159 if dirname ($out) eq $relative_dir;
4160 }
4162 if (@local_headers)
4163 {
4164 # We need to make sure config.h is built before we recurse.
4165 # We also want to make sure that built sources are built
4166 # before any ordinary `all' targets are run. We can't do this
4167 # by changing the order of dependencies to the "all" because
4168 # that breaks when using parallel makes. Instead we handle
4169 # things explicitly.
4170 $output_all .= ("all: @local_headers"
4171 . "\n\t"
4172 . '$(MAKE) $(AM_MAKEFLAGS) '
4173 . (var ('SUBDIRS') ? 'all-recursive' : 'all-am')
4174 . "\n\n");
4175 }
4176 else
4177 {
4178 $output_all .= "all: " . (var ('SUBDIRS')
4179 ? 'all-recursive' : 'all-am') . "\n\n";
4180 }
4181 }
4184 # &do_check_merge_target ()
4185 # -------------------------
4186 # Handle check merge target specially.
4187 sub do_check_merge_target ()
4188 {
4189 if (rule 'check-local')
4190 {
4191 # User defined local form of target. So include it.
4192 push @check_tests, 'check-local';
4193 depend '.PHONY', 'check-local';
4194 }
4196 # In --cygnus mode, check doesn't depend on all.
4197 if (option 'cygnus')
4198 {
4199 # Just run the local check rules.
4200 pretty_print_rule ('check-am:', "\t\t", @check);
4201 }
4202 else
4203 {
4204 # The check target must depend on the local equivalent of
4205 # `all', to ensure all the primary targets are built. Then it
4206 # must build the local check rules.
4207 $output_rules .= "check-am: all-am\n";
4208 pretty_print_rule ("\t\$(MAKE) \$(AM_MAKEFLAGS)", "\t ",
4209 @check)
4210 if @check;
4211 }
4212 pretty_print_rule ("\t\$(MAKE) \$(AM_MAKEFLAGS)", "\t ",
4213 @check_tests)
4214 if @check_tests;
4216 depend '.PHONY', 'check', 'check-am';
4217 # Handle recursion. We have to honor BUILT_SOURCES like for `all:'.
4218 $output_rules .= ("check: "
4219 . (var ('BUILT_SOURCES')
4220 ? "\$(BUILT_SOURCES)\n\t\$(MAKE) \$(AM_MAKEFLAGS) "
4221 : '')
4222 . (var ('SUBDIRS') ? 'check-recursive' : 'check-am')
4223 . "\n");
4224 }
4226 # handle_clean ($MAKEFILE)
4227 # ------------------------
4228 # Handle all 'clean' targets.
4229 sub handle_clean ($)
4230 {
4231 my ($makefile) = @_;
4233 # Clean the files listed in user variables if they exist.
4234 $clean_files{'$(MOSTLYCLEANFILES)'} = MOSTLY_CLEAN
4235 if var ('MOSTLYCLEANFILES');
4236 $clean_files{'$(CLEANFILES)'} = CLEAN
4237 if var ('CLEANFILES');
4238 $clean_files{'$(DISTCLEANFILES)'} = DIST_CLEAN
4239 if var ('DISTCLEANFILES');
4240 $clean_files{'$(MAINTAINERCLEANFILES)'} = MAINTAINER_CLEAN
4241 if var ('MAINTAINERCLEANFILES');
4243 # Built sources are automatically removed by maintainer-clean.
4244 $clean_files{'$(BUILT_SOURCES)'} = MAINTAINER_CLEAN
4245 if var ('BUILT_SOURCES');
4247 # Compute a list of "rm"s to run for each target.
4248 my %rms = (MOSTLY_CLEAN, [],
4249 CLEAN, [],
4250 DIST_CLEAN, [],
4251 MAINTAINER_CLEAN, []);
4253 foreach my $file (keys %clean_files)
4254 {
4255 my $when = $clean_files{$file};
4256 prog_error 'invalid entry in %clean_files'
4257 unless exists $rms{$when};
4259 my $rm = "rm -f $file";
4260 # If file is a variable, make sure when don't call `rm -f' without args.
4261 $rm ="test -z \"$file\" || $rm"
4262 if ($file =~ /^\s*\$(\(.*\)|\{.*\})\s*$/);
4264 push @{$rms{$when}}, "\t-$rm\n";
4265 }
4267 $output_rules .= &file_contents
4268 ('clean',
4269 new Automake::Location,
4270 MOSTLYCLEAN_RMS => join ('', @{$rms{&MOSTLY_CLEAN}}),
4271 CLEAN_RMS => join ('', @{$rms{&CLEAN}}),
4272 DISTCLEAN_RMS => join ('', @{$rms{&DIST_CLEAN}}),
4273 MAINTAINER_CLEAN_RMS => join ('', @{$rms{&MAINTAINER_CLEAN}}),
4274 MAKEFILE => basename $makefile,
4275 );
4276 }
4279 # &target_cmp ($A, $B)
4280 # --------------------
4281 # Subroutine for &handle_factored_dependencies to let `.PHONY' be last.
4282 sub target_cmp
4283 {
4284 return 0
4285 if $a eq $b;
4286 return -1
4287 if $b eq '.PHONY';
4288 return 1
4289 if $a eq '.PHONY';
4290 return $a cmp $b;
4291 }
4294 # &handle_factored_dependencies ()
4295 # --------------------------------
4296 # Handle everything related to gathered targets.
4297 sub handle_factored_dependencies
4298 {
4299 # Reject bad hooks.
4300 foreach my $utarg ('uninstall-data-local', 'uninstall-data-hook',
4301 'uninstall-exec-local', 'uninstall-exec-hook')
4302 {
4303 my $x = $utarg;
4304 $x =~ s/(data|exec)-//;
4305 reject_rule ($utarg, "use `$x', not `$utarg'");
4306 }
4308 reject_rule ('install-local',
4309 "use `install-data-local' or `install-exec-local', "
4310 . "not `install-local'");
4312 reject_rule ('install-info-local',
4313 "`install-info-local' target defined but "
4314 . "`no-installinfo' option not in use")
4315 unless option 'no-installinfo';
4317 # Install the -local hooks.
4318 foreach (keys %dependencies)
4319 {
4320 # Hooks are installed on the -am targets.
4321 s/-am$// or next;
4322 if (rule "$_-local")
4323 {
4324 depend ("$_-am", "$_-local");
4325 depend ('.PHONY', "$_-local");
4326 }
4327 }
4329 # Install the -hook hooks.
4330 # FIXME: Why not be as liberal as we are with -local hooks?
4331 foreach ('install-exec', 'install-data', 'uninstall')
4332 {
4333 if (rule ("$_-hook"))
4334 {
4335 $actions{"$_-am"} .=
4336 ("\t\@\$(NORMAL_INSTALL)\n"
4337 . "\t" . '$(MAKE) $(AM_MAKEFLAGS) ' . "$_-hook\n");
4338 }
4339 }
4341 # All the required targets are phony.
4342 depend ('.PHONY', keys %required_targets);
4344 # Actually output gathered targets.
4345 foreach (sort target_cmp keys %dependencies)
4346 {
4347 # If there is nothing about this guy, skip it.
4348 next
4349 unless (@{$dependencies{$_}}
4350 || $actions{$_}
4351 || $required_targets{$_});
4353 # Define gathered targets in undefined conditions.
4354 # FIXME: Right now we must handle .PHONY as an exception,
4355 # because people write things like
4356 # .PHONY: myphonytarget
4357 # to append dependencies. This would not work if Automake
4358 # refrained from defining its own .PHONY target as it does
4359 # with other overridden targets.
4360 my @undefined_conds = (TRUE,);
4361 if ($_ ne '.PHONY')
4362 {
4363 @undefined_conds =
4364 Automake::Rule::define ($_, 'internal',
4365 RULE_AUTOMAKE, TRUE, INTERNAL);
4366 }
4367 my @uniq_deps = uniq (sort @{$dependencies{$_}});
4368 foreach my $cond (@undefined_conds)
4369 {
4370 my $condstr = $cond->subst_string;
4371 &pretty_print_rule ("$condstr$_:", "$condstr\t", @uniq_deps);
4372 $output_rules .= $actions{$_} if defined $actions{$_};
4373 $output_rules .= "\n";
4374 }
4375 }
4376 }
4379 # &handle_tests_dejagnu ()
4380 # ------------------------
4381 sub handle_tests_dejagnu
4382 {
4383 push (@check_tests, 'check-DEJAGNU');
4384 $output_rules .= file_contents ('dejagnu', new Automake::Location);
4385 }
4388 # Handle TESTS variable and other checks.
4389 sub handle_tests
4390 {
4391 if (option 'dejagnu')
4392 {
4393 &handle_tests_dejagnu;
4394 }
4395 else
4396 {
4397 foreach my $c ('DEJATOOL', 'RUNTEST', 'RUNTESTFLAGS')
4398 {
4399 reject_var ($c, "`$c' defined but `dejagnu' not in "
4400 . "`AUTOMAKE_OPTIONS'");
4401 }
4402 }
4404 if (var ('TESTS'))
4405 {
4406 push (@check_tests, 'check-TESTS');
4407 $output_rules .= &file_contents ('check', new Automake::Location);
4408 }
4409 }
4411 # Handle Emacs Lisp.
4412 sub handle_emacs_lisp
4413 {
4414 my @elfiles = &am_install_var ('-candist', 'lisp', 'LISP',
4415 'lisp', 'noinst');
4417 return if ! @elfiles;
4419 define_pretty_variable ('am__ELFILES', TRUE, INTERNAL,
4420 map { $_->[1] } @elfiles);
4421 define_pretty_variable ('am__ELCFILES', TRUE, INTERNAL,
4422 '$(am__ELFILES:.el=.elc)');
4423 # This one can be overridden by users.
4424 define_pretty_variable ('ELCFILES', TRUE, INTERNAL, '$(LISP:.el=.elc)');
4426 push @all, '$(ELCFILES)';
4428 require_variables ($elfiles[0][0], "Emacs Lisp sources seen", TRUE,
4429 'EMACS', 'lispdir');
4430 require_conf_file ($elfiles[0][0], FOREIGN, 'elisp-comp');
4431 &define_variable ('elisp_comp', "$am_config_aux_dir/elisp-comp", INTERNAL);
4432 }
4434 # Handle Python
4435 sub handle_python
4436 {
4437 my @pyfiles = &am_install_var ('-defaultdist', 'python', 'PYTHON',
4438 'noinst');
4439 return if ! @pyfiles;
4441 require_variables ($pyfiles[0][0], "Python sources seen", TRUE, 'PYTHON');
4442 require_conf_file ($pyfiles[0][0], FOREIGN, 'py-compile');
4443 &define_variable ('py_compile', "$am_config_aux_dir/py-compile", INTERNAL);
4444 }
4446 # Handle Java.
4447 sub handle_java
4448 {
4449 my @sourcelist = &am_install_var ('-candist',
4450 'java', 'JAVA',
4451 'java', 'noinst', 'check');
4452 return if ! @sourcelist;
4454 my @prefix = am_primary_prefixes ('JAVA', 1,
4455 'java', 'noinst', 'check');
4457 my $dir;
4458 foreach my $curs (@prefix)
4459 {
4460 next
4461 if $curs eq 'EXTRA';
4463 err_var "${curs}_JAVA", "multiple _JAVA primaries in use"
4464 if defined $dir;
4465 $dir = $curs;
4466 }
4469 push (@all, 'class' . $dir . '.stamp');
4470 }
4473 # Handle some of the minor options.
4474 sub handle_minor_options
4475 {
4476 if (option 'readme-alpha')
4477 {
4478 if ($relative_dir eq '.')
4479 {
4480 if ($package_version !~ /^$GNITS_VERSION_PATTERN$/)
4481 {
4482 msg ('error-gnits', $package_version_location,
4483 "version `$package_version' doesn't follow " .
4484 "Gnits standards");
4485 }
4486 if (defined $1 && -f 'README-alpha')
4487 {
4488 # This means we have an alpha release. See
4489 # GNITS_VERSION_PATTERN for details.
4490 push_dist_common ('README-alpha');
4491 }
4492 }
4493 }
4494 }
4496 ################################################################
4498 # ($OUTPUT, @INPUTS)
4499 # &split_config_file_spec ($SPEC)
4500 # -------------------------------
4501 # Decode the Autoconf syntax for config files (files, headers, links
4502 # etc.).
4503 sub split_config_file_spec ($)
4504 {
4505 my ($spec) = @_;
4506 my ($output, @inputs) = split (/:/, $spec);
4508 push @inputs, "$output.in"
4509 unless @inputs;
4511 return ($output, @inputs);
4512 }
4514 # $input
4515 # locate_am (@POSSIBLE_SOURCES)
4516 # -----------------------------
4517 # AC_CONFIG_FILES allow specifications such as Makefile:top.in:mid.in:bot.in
4518 # This functions returns the first *.in file for which a *.am exists.
4519 # It returns undef otherwise.
4520 sub locate_am (@)
4521 {
4522 my (@rest) = @_;
4523 my $input;
4524 foreach my $file (@rest)
4525 {
4526 if (($file =~ /^(.*)\.in$/) && -f "$1.am")
4527 {
4528 $input = $file;
4529 last;
4530 }
4531 }
4532 return $input;
4533 }
4535 my %make_list;
4537 # &scan_autoconf_config_files ($WHERE, $CONFIG-FILES)
4538 # ---------------------------------------------------
4539 # Study $CONFIG-FILES which is the first argument to AC_CONFIG_FILES
4540 # (or AC_OUTPUT).
4541 sub scan_autoconf_config_files ($$)
4542 {
4543 my ($where, $config_files) = @_;
4545 # Look at potential Makefile.am's.
4546 foreach (split ' ', $config_files)
4547 {
4548 # Must skip empty string for Perl 4.
4549 next if $_ eq "\\" || $_ eq '';
4551 # Handle $local:$input syntax.
4552 my ($local, @rest) = split (/:/);
4553 @rest = ("$local.in",) unless @rest;
4554 my $input = locate_am @rest;
4555 if ($input)
4556 {
4557 # We have a file that automake should generate.
4558 $make_list{$input} = join (':', ($local, @rest));
4559 }
4560 else
4561 {
4562 # We have a file that automake should cause to be
4563 # rebuilt, but shouldn't generate itself.
4564 push (@other_input_files, $_);
4565 }
4566 $ac_config_files_location{$local} = $where;
4567 }
4568 }
4571 # &scan_autoconf_traces ($FILENAME)
4572 # ---------------------------------
4573 sub scan_autoconf_traces ($)
4574 {
4575 my ($filename) = @_;
4577 # Macros to trace, with their minimal number of arguments.
4578 #
4579 # IMPORTANT: If you add a macro here, you should also add this macro
4580 # ========= to Automake-preselection in autoconf/lib/autom4te.in.
4581 my %traced = (
4582 AC_CANONICAL_HOST => 0,
4583 AC_CANONICAL_SYSTEM => 0,
4584 AC_CONFIG_AUX_DIR => 1,
4585 AC_CONFIG_FILES => 1,
4586 AC_CONFIG_HEADERS => 1,
4587 AC_CONFIG_LINKS => 1,
4588 AC_INIT => 0,
4589 AC_LIBSOURCE => 1,
4590 AC_LIBTOOL_TAGS => 0,
4591 AC_SUBST => 1,
4592 AM_AUTOMAKE_VERSION => 1,
4593 AM_CONDITIONAL => 2,
4594 AM_ENABLE_MULTILIB => 0,
4595 AM_GNU_GETTEXT => 0,
4596 AM_INIT_AUTOMAKE => 0,
4597 AM_MAINTAINER_MODE => 0,
4598 AM_PROG_CC_C_O => 0,
4599 m4_include => 1,
4600 m4_sinclude => 1,
4601 sinclude => 1,
4602 _LT_AC_TAGCONFIG => 0,
4603 );
4605 my $traces = ($ENV{AUTOCONF} || 'autoconf') . " ";
4607 # Use a separator unlikely to be used, not `:', the default, which
4608 # has a precise meaning for AC_CONFIG_FILES and so on.
4609 $traces .= join (' ',
4610 map { "--trace=$_" . ':\$f:\$l::\$n::\${::}%' }
4611 (keys %traced));
4613 my $tracefh = new Automake::XFile ("$traces $filename |");
4614 verb "reading $traces";
4616 while ($_ = $tracefh->getline)
4617 {
4618 chomp;
4619 my ($here, @args) = split (/::/);
4620 my $where = new Automake::Location $here;
4621 my $macro = $args[0];
4623 prog_error ("unrequested trace `$macro'")
4624 unless exists $traced{$macro};
4626 # Skip and diagnose malformed calls.
4627 if ($#args < $traced{$macro})
4628 {
4629 msg ('syntax', $where, "not enough arguments for $macro");
4630 next;
4631 }
4633 # Alphabetical ordering please.
4634 if ($macro eq 'AC_CANONICAL_HOST')
4635 {
4636 if (! $seen_canonical)
4637 {
4638 $seen_canonical = AC_CANONICAL_HOST;
4639 $canonical_location = $where;
4640 }
4641 }
4642 elsif ($macro eq 'AC_CANONICAL_SYSTEM')
4643 {
4644 $seen_canonical = AC_CANONICAL_SYSTEM;
4645 $canonical_location = $where;
4646 }
4647 elsif ($macro eq 'AC_CONFIG_AUX_DIR')
4648 {
4649 if ($seen_init_automake)
4650 {
4651 error ($where, "AC_CONFIG_AUX_DIR must be called before "
4652 . "AM_INIT_AUTOMAKE...", partial => 1);
4653 error ($seen_init_automake, "... AM_INIT_AUTOMAKE called here");
4654 }
4655 $config_aux_dir = $args[1];
4656 $config_aux_dir_set_in_configure_ac = 1;
4657 }
4658 elsif ($macro eq 'AC_CONFIG_FILES')
4659 {
4660 # Look at potential Makefile.am's.
4661 scan_autoconf_config_files ($where, $args[1]);
4662 }
4663 elsif ($macro eq 'AC_CONFIG_HEADERS')
4664 {
4665 foreach my $spec (split (' ', $args[1]))
4666 {
4667 my ($dest, @src) = split (':', $spec);
4668 $ac_config_files_location{$dest} = $where;
4669 push @config_headers, $spec;
4670 }
4671 }
4672 elsif ($macro eq 'AC_CONFIG_LINKS')
4673 {
4674 foreach my $spec (split (' ', $args[1]))
4675 {
4676 my ($dest, $src) = split (':', $spec);
4677 $ac_config_files_location{$dest} = $where;
4678 push @config_links, $spec;
4679 }
4680 }
4681 elsif ($macro eq 'AC_INIT')
4682 {
4683 if (defined $args[2])
4684 {
4685 $package_version = $args[2];
4686 $package_version_location = $where;
4687 }
4688 }
4689 elsif ($macro eq 'AC_LIBSOURCE')
4690 {
4691 $libsources{$args[1]} = $here;
4692 }
4693 elsif ($macro eq 'AC_LIBTOOL_TAGS')
4694 {
4695 # Reset %libtool_tags, in case AC_LIBTOOL_TAGS is
4696 # expansed after _LT_AC_TAGCONFIG. We want to ignore
4697 # _LT_AC_TAGCONFIG if AC_LIBTOOL_TAGS is called.
4698 %libtool_tags = (CC => 1);
4699 $libtool_tags{$_} = 1 foreach split (' ', $args[1]);
4700 }
4701 elsif ($macro eq 'AC_SUBST')
4702 {
4703 # Just check for alphanumeric in AC_SUBST. If you do
4704 # AC_SUBST(5), then too bad.
4705 $configure_vars{$args[1]} = $where
4706 if $args[1] =~ /^\w+$/;
4707 }
4708 elsif ($macro eq 'AM_AUTOMAKE_VERSION')
4709 {
4710 error ($where,
4711 "version mismatch. This is Automake $VERSION,\n" .
4712 "but the definition used by this AM_INIT_AUTOMAKE\n" .
4713 "comes from Automake $args[1]. You should recreate\n" .
4714 "aclocal.m4 with aclocal and run automake again.\n",
4715 # $? = 63 is used to indicate version mismatch to missing.
4716 exit_code => 63)
4717 if $VERSION ne $args[1];
4719 $seen_automake_version = 1;
4720 }
4721 elsif ($macro eq 'AM_CONDITIONAL')
4722 {
4723 $configure_cond{$args[1]} = $where;
4724 }
4725 elsif ($macro eq 'AM_ENABLE_MULTILIB')
4726 {
4727 $seen_multilib = $where;
4728 }
4729 elsif ($macro eq 'AM_GNU_GETTEXT')
4730 {
4731 $seen_gettext = $where;
4732 $ac_gettext_location = $where;
4733 $seen_gettext_external = grep ($_ eq 'external', @args);
4734 }
4735 elsif ($macro eq 'AM_INIT_AUTOMAKE')
4736 {
4737 $seen_init_automake = $where;
4738 if (defined $args[2])
4739 {
4740 $package_version = $args[2];
4741 $package_version_location = $where;
4742 }
4743 elsif (defined $args[1])
4744 {
4745 exit $exit_code
4746 if (process_global_option_list ($where,
4747 split (' ', $args[1])));
4748 }
4749 }
4750 elsif ($macro eq 'AM_MAINTAINER_MODE')
4751 {
4752 $seen_maint_mode = $where;
4753 }
4754 elsif ($macro eq 'AM_PROG_CC_C_O')
4755 {
4756 $seen_cc_c_o = $where;
4757 }
4758 elsif ($macro eq 'm4_include'
4759 || $macro eq 'm4_sinclude'
4760 || $macro eq 'sinclude')
4761 {
4762 # Some modified versions of Autoconf don't use
4763 # forzen files. Consequently it's possible that we see all
4764 # m4_include's performed during Autoconf's startup.
4765 # Obviously we don't want to distribute Autoconf's files
4766 # so we skip absolute filenames here.
4767 push @configure_deps, '$(top_srcdir)/' . $args[1]
4768 unless $here =~ m,^(?:\w:)?[\\/],;
4769 # Keep track of the greatest timestamp.
4770 if (-e $args[1])
4771 {
4772 my $mtime = mtime $args[1];
4773 $configure_deps_greatest_timestamp = $mtime
4774 if $mtime > $configure_deps_greatest_timestamp;
4775 }
4776 }
4777 elsif ($macro eq '_LT_AC_TAGCONFIG')
4778 {
4779 # _LT_AC_TAGCONFIG is an old macro present in Libtool 1.5.
4780 # We use it to detect whether tags are supported. Our prefered
4781 # interface is AC_LIBTOOL_TAGS, but it was introduced in
4782 # Libtool 1.6. Ignore _LT_AC_TAGCONFIG if AC_LIBTOOL_TAGS has
4783 # been called.
4784 if (0 == keys %libtool_tags)
4785 {
4786 # Hardcode the tags supported by Libtool 1.5.
4787 %libtool_tags = (CC => 1, CXX => 1, GCJ => 1, F77 => 1);
4788 }
4789 }
4790 }
4792 $tracefh->close;
4793 }
4796 # &scan_autoconf_files ()
4797 # -----------------------
4798 # Check whether we use `configure.ac' or `configure.in'.
4799 # Scan it (and possibly `aclocal.m4') for interesting things.
4800 # We must scan aclocal.m4 because there might be AC_SUBSTs and such there.
4801 sub scan_autoconf_files ()
4802 {
4803 # Reinitialize libsources here. This isn't really necessary,
4804 # since we currently assume there is only one configure.ac. But
4805 # that won't always be the case.
4806 %libsources = ();
4808 # Keep track of the youngest configure dependency.
4809 $configure_deps_greatest_timestamp = mtime $configure_ac;
4810 if (-e 'aclocal.m4')
4811 {
4812 my $mtime = mtime 'aclocal.m4';
4813 $configure_deps_greatest_timestamp = $mtime
4814 if $mtime > $configure_deps_greatest_timestamp;
4815 }
4817 scan_autoconf_traces ($configure_ac);
4819 @configure_input_files = sort keys %make_list;
4820 # Set input and output files if not specified by user.
4821 if (! @input_files)
4822 {
4823 @input_files = @configure_input_files;
4824 %output_files = %make_list;
4825 }
4828 if (! $seen_init_automake)
4829 {
4830 err_ac ("no proper invocation of AM_INIT_AUTOMAKE was found.\nYou "
4831 . "should verify that $configure_ac invokes AM_INIT_AUTOMAKE,"
4832 . "\nthat aclocal.m4 is present in the top-level directory,\n"
4833 . "and that aclocal.m4 was recently regenerated "
4834 . "(using aclocal).");
4835 }
4836 else
4837 {
4838 if (! $seen_automake_version)
4839 {
4840 if (-f 'aclocal.m4')
4841 {
4842 error ($seen_init_automake,
4843 "your implementation of AM_INIT_AUTOMAKE comes from " .
4844 "an\nold Automake version. You should recreate " .
4845 "aclocal.m4\nwith aclocal and run automake again.\n",
4846 # $? = 63 is used to indicate version mismatch to missing.
4847 exit_code => 63);
4848 }
4849 else
4850 {
4851 error ($seen_init_automake,
4852 "no proper implementation of AM_INIT_AUTOMAKE was " .
4853 "found,\nprobably because aclocal.m4 is missing...\n" .
4854 "You should run aclocal to create this file, then\n" .
4855 "run automake again.\n");
4856 }
4857 }
4858 }
4860 locate_aux_dir ();
4862 # Reorder @input_files so that the Makefile that distributes aux
4863 # files is processed last. This is important because each directory
4864 # can require auxiliary scripts and we should wait until they have
4865 # been installed before distributing them.
4867 # The Makefile.in that distribute the aux files is the one in
4868 # $config_aux_dir or the top-level Makefile.
4869 my $auxdirdist = is_make_dir ($config_aux_dir) ? $config_aux_dir : '.';
4870 my @new_input_files = ();
4871 while (@input_files)
4872 {
4873 my $in = pop @input_files;
4874 my @ins = split (/:/, $output_files{$in});
4875 if (dirname ($ins[0]) eq $auxdirdist)
4876 {
4877 push @new_input_files, $in;
4878 $automake_will_process_aux_dir = 1;
4879 }
4880 else
4881 {
4882 unshift @new_input_files, $in;
4883 }
4884 }
4885 @input_files = @new_input_files;
4887 # If neither the auxdir/Makefile nor the ./Makefile are generated
4888 # by Automake, we won't distribute the aux files anyway. Assume
4889 # the user know what (s)he does, and pretend we will distribute
4890 # them to disable the error in require_file_internal.
4891 $automake_will_process_aux_dir = 1 if ! is_make_dir ($auxdirdist);
4893 # Look for some files we need. Always check for these. This
4894 # check must be done for every run, even those where we are only
4895 # looking at a subdir Makefile. We must set relative_dir for
4896 # maybe_push_required_file to work.
4897 $relative_dir = '.';
4898 require_conf_file ($configure_ac, FOREIGN, 'install-sh', 'missing');
4899 err_am "`install.sh' is an anachronism; use `install-sh' instead"
4900 if -f $config_aux_dir . '/install.sh';
4902 # Preserve dist_common for later.
4903 $configure_dist_common = variable_value ('DIST_COMMON') || '';
4905 }
4907 ################################################################
4909 # Set up for Cygnus mode.
4910 sub check_cygnus
4911 {
4912 my $cygnus = option 'cygnus';
4913 return unless $cygnus;
4915 set_strictness ('foreign');
4916 set_option ('no-installinfo', $cygnus);
4917 set_option ('no-dependencies', $cygnus);
4918 set_option ('no-dist', $cygnus);
4920 err_ac "`AM_MAINTAINER_MODE' required when --cygnus specified"
4921 if !$seen_maint_mode;
4922 }
4924 # Do any extra checking for GNU standards.
4925 sub check_gnu_standards
4926 {
4927 if ($relative_dir eq '.')
4928 {
4929 # In top level (or only) directory.
4930 require_file ("$am_file.am", GNU,
4931 qw/INSTALL NEWS README AUTHORS ChangeLog/);
4933 # Accept one of these three licenses; default to COPYING.
4934 # Make sure we do not overwrite an existing license.
4935 my $license;
4936 foreach (qw /COPYING COPYING.LIB COPYING.LESSER/)
4937 {
4938 if (-f $_)
4939 {
4940 $license = $_;
4941 last;
4942 }
4943 }
4944 require_file ("$am_file.am", GNU, 'COPYING')
4945 unless $license;
4946 }
4948 for my $opt ('no-installman', 'no-installinfo')
4949 {
4950 msg ('error-gnu', option $opt,
4951 "option `$opt' disallowed by GNU standards")
4952 if option $opt;
4953 }
4954 }
4956 # Do any extra checking for GNITS standards.
4957 sub check_gnits_standards
4958 {
4959 if ($relative_dir eq '.')
4960 {
4961 # In top level (or only) directory.
4962 require_file ("$am_file.am", GNITS, 'THANKS');
4963 }
4964 }
4966 ################################################################
4967 #
4968 # Functions to handle files of each language.
4970 # Each `lang_X_rewrite($DIRECTORY, $BASE, $EXT)' function follows a
4971 # simple formula: Return value is LANG_SUBDIR if the resulting object
4972 # file should be in a subdir if the source file is, LANG_PROCESS if
4973 # file is to be dealt with, LANG_IGNORE otherwise.
4975 # Much of the actual processing is handled in
4976 # handle_single_transform. These functions exist so that
4977 # auxiliary information can be recorded for a later cleanup pass.
4978 # Note that the calls to these functions are computed, so don't bother
4979 # searching for their precise names in the source.
4981 # This is just a convenience function that can be used to determine
4982 # when a subdir object should be used.
4983 sub lang_sub_obj
4984 {
4985 return option 'subdir-objects' ? LANG_SUBDIR : LANG_PROCESS;
4986 }
4988 # Rewrite a single C source file.
4989 sub lang_c_rewrite
4990 {
4991 my ($directory, $base, $ext) = @_;
4993 if (option 'ansi2knr' && $base =~ /_$/)
4994 {
4995 # FIXME: include line number in error.
4996 err_am "C source file `$base.c' would be deleted by ansi2knr rules";
4997 }
4999 my $r = LANG_PROCESS;
5000 if (option 'subdir-objects')
5001 {
5002 $r = LANG_SUBDIR;
5003 $base = $directory . '/' . $base
5004 unless $directory eq '.' || $directory eq '';
5006 err_am ("C objects in subdir but `AM_PROG_CC_C_O' "
5007 . "not in `$configure_ac'",
5008 uniq_scope => US_GLOBAL)
5009 unless $seen_cc_c_o;
5011 require_conf_file ("$am_file.am", FOREIGN, 'compile');
5013 # In this case we already have the directory information, so
5014 # don't add it again.
5015 $de_ansi_files{$base} = '';
5016 }
5017 else
5018 {
5019 $de_ansi_files{$base} = (($directory eq '.' || $directory eq '')
5020 ? ''
5021 : "$directory/");
5022 }
5024 return $r;
5025 }
5027 # Rewrite a single C++ source file.
5028 sub lang_cxx_rewrite
5029 {
5030 return &lang_sub_obj;
5031 }
5033 # Rewrite a single header file.
5034 sub lang_header_rewrite
5035 {
5036 # Header files are simply ignored.
5037 return LANG_IGNORE;
5038 }
5040 # Rewrite a single yacc file.
5041 sub lang_yacc_rewrite
5042 {
5043 my ($directory, $base, $ext) = @_;
5045 my $r = &lang_sub_obj;
5046 (my $newext = $ext) =~ tr/y/c/;
5047 return ($r, $newext);
5048 }
5050 # Rewrite a single yacc++ file.
5051 sub lang_yaccxx_rewrite
5052 {
5053 my ($directory, $base, $ext) = @_;
5055 my $r = &lang_sub_obj;
5056 (my $newext = $ext) =~ tr/y/c/;
5057 return ($r, $newext);
5058 }
5060 # Rewrite a single lex file.
5061 sub lang_lex_rewrite
5062 {
5063 my ($directory, $base, $ext) = @_;
5065 my $r = &lang_sub_obj;
5066 (my $newext = $ext) =~ tr/l/c/;
5067 return ($r, $newext);
5068 }
5070 # Rewrite a single lex++ file.
5071 sub lang_lexxx_rewrite
5072 {
5073 my ($directory, $base, $ext) = @_;
5075 my $r = &lang_sub_obj;
5076 (my $newext = $ext) =~ tr/l/c/;
5077 return ($r, $newext);
5078 }
5080 # Rewrite a single assembly file.
5081 sub lang_asm_rewrite
5082 {
5083 return &lang_sub_obj;
5084 }
5086 # Rewrite a single Fortran 77 file.
5087 sub lang_f77_rewrite
5088 {
5089 return LANG_PROCESS;
5090 }
5092 # Rewrite a single Fortran file.
5093 sub lang_fc_rewrite
5094 {
5095 return LANG_PROCESS;
5096 }
5098 # Rewrite a single preprocessed Fortran file.
5099 sub lang_ppfc_rewrite
5100 {
5101 return LANG_PROCESS;
5102 }
5104 # Rewrite a single preprocessed Fortran 77 file.
5105 sub lang_ppf77_rewrite
5106 {
5107 return LANG_PROCESS;
5108 }
5110 # Rewrite a single ratfor file.
5111 sub lang_ratfor_rewrite
5112 {
5113 return LANG_PROCESS;
5114 }
5116 # Rewrite a single Objective C file.
5117 sub lang_objc_rewrite
5118 {
5119 return &lang_sub_obj;
5120 }
5122 # Rewrite a single Java file.
5123 sub lang_java_rewrite
5124 {
5125 return LANG_SUBDIR;
5126 }
5128 # The lang_X_finish functions are called after all source file
5129 # processing is done. Each should handle defining rules for the
5130 # language, etc. A finish function is only called if a source file of
5131 # the appropriate type has been seen.
5133 sub lang_c_finish
5134 {
5135 # Push all libobjs files onto de_ansi_files. We actually only
5136 # push files which exist in the current directory, and which are
5137 # genuine source files.
5138 foreach my $file (keys %libsources)
5139 {
5140 if ($file =~ /^(.*)\.[cly]$/ && -f "$relative_dir/$file")
5141 {
5142 $de_ansi_files{$1} = ''
5143 }
5144 }
5146 if (option 'ansi2knr' && keys %de_ansi_files)
5147 {
5148 # Make all _.c files depend on their corresponding .c files.
5149 my @objects;
5150 foreach my $base (sort keys %de_ansi_files)
5151 {
5152 # Each _.c file must depend on ansi2knr; otherwise it
5153 # might be used in a parallel build before it is built.
5154 # We need to support files in the srcdir and in the build
5155 # dir (because these files might be auto-generated. But
5156 # we can't use $< -- some makes only define $< during a
5157 # suffix rule.
5158 my $ansfile = $de_ansi_files{$base} . $base . '.c';
5159 $output_rules .= ($base . "_.c: $ansfile \$(ANSI2KNR)\n\t"
5160 . '$(CPP) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS) $(CPPFLAGS) '
5161 . '`if test -f $(srcdir)/' . $ansfile
5162 . '; then echo $(srcdir)/' . $ansfile
5163 . '; else echo ' . $ansfile . '; fi` '
5164 . "| sed 's/^# \\([0-9]\\)/#line \\1/' "
5165 . '| $(ANSI2KNR) > $@'
5166 # If ansi2knr fails then we shouldn't
5167 # create the _.c file
5168 . " || rm -f \$\@\n");
5169 push (@objects, $base . '_.$(OBJEXT)');
5170 push (@objects, $base . '_.lo')
5171 if var ('LIBTOOL');
5173 # Explicitly clean the _.c files if they are in a
5174 # subdirectory. (In the current directory they get erased
5175 # by a `rm -f *_.c' rule.)
5176 $clean_files{$base . '_.c'} = MOSTLY_CLEAN
5177 if dirname ($base) ne '.';
5178 }
5180 # Make all _.o (and _.lo) files depend on ansi2knr.
5181 # Use a sneaky little hack to make it print nicely.
5182 &pretty_print_rule ('', '', @objects, ':', '$(ANSI2KNR)');
5183 }
5184 }
5186 # This is a yacc helper which is called whenever we have decided to
5187 # compile a yacc file.
5188 sub lang_yacc_target_hook
5189 {
5190 my ($self, $aggregate, $output, $input) = @_;
5192 my $flag = $aggregate . "_YFLAGS";
5193 my $flagvar = var $flag;
5194 my $YFLAGSvar = var 'YFLAGS';
5195 if (($flagvar && $flagvar->variable_value =~ /$DASH_D_PATTERN/o)
5196 || ($YFLAGSvar && $YFLAGSvar->variable_value =~ /$DASH_D_PATTERN/o))
5197 {
5198 (my $output_base = $output) =~ s/$KNOWN_EXTENSIONS_PATTERN$//;
5199 my $header = $output_base . '.h';
5201 # Found a `-d' that applies to the compilation of this file.
5202 # Add a dependency for the generated header file, and arrange
5203 # for that file to be included in the distribution.
5204 # FIXME: this fails for `nodist_*_SOURCES'.
5205 foreach my $cond (Automake::Rule::define (${header}, 'internal',
5206 RULE_AUTOMAKE, TRUE,
5207 INTERNAL))
5208 {
5209 my $condstr = $cond->subst_string;
5210 $output_rules .= ("$condstr${header}: $output\n"
5211 # Recover from removal of $header
5212 . "$condstr\t\@if test ! -f \$@; then \\\n"
5213 . "$condstr\t rm -f $output; \\\n"
5214 . "$condstr\t \$(MAKE) $output; \\\n"
5215 . "$condstr\telse :; fi\n");
5216 }
5217 &push_dist_common ($header);
5219 # If the files are built in the build directory, then we want
5220 # to remove them with `make clean'. If they are in srcdir
5221 # they shouldn't be touched. However, we can't determine this
5222 # statically, and the GNU rules say that yacc/lex output files
5223 # should be removed by maintainer-clean. So that's what we
5224 # do.
5225 $clean_files{$header} = MAINTAINER_CLEAN;
5226 }
5227 # Erase $OUTPUT on `make maintainer-clean' (by GNU standards).
5228 # See the comment above for $HEADER.
5229 $clean_files{$output} = MAINTAINER_CLEAN;
5230 }
5232 # This is a lex helper which is called whenever we have decided to
5233 # compile a lex file.
5234 sub lang_lex_target_hook
5235 {
5236 my ($self, $aggregate, $output, $input) = @_;
5237 # If the files are built in the build directory, then we want to
5238 # remove them with `make clean'. If they are in srcdir they
5239 # shouldn't be touched. However, we can't determine this
5240 # statically, and the GNU rules say that yacc/lex output files
5241 # should be removed by maintainer-clean. So that's what we do.
5242 $clean_files{$output} = MAINTAINER_CLEAN;
5243 }
5245 # This is a helper for both lex and yacc.
5246 sub yacc_lex_finish_helper
5247 {
5248 return if defined $language_scratch{'lex-yacc-done'};
5249 $language_scratch{'lex-yacc-done'} = 1;
5251 # If there is more than one distinct yacc (resp lex) source file
5252 # in a given directory, then the `ylwrap' program is required to
5253 # allow parallel builds to work correctly. FIXME: for now, no
5254 # line number.
5255 require_conf_file ($configure_ac, FOREIGN, 'ylwrap');
5256 if ($config_aux_dir_set_in_configure_ac)
5257 {
5258 &define_variable ('YLWRAP', "$am_config_aux_dir/ylwrap", INTERNAL);
5259 }
5260 else
5261 {
5262 &define_variable ('YLWRAP', '$(top_srcdir)/ylwrap', INTERNAL);
5263 }
5264 }
5266 sub lang_yacc_finish
5267 {
5268 return if defined $language_scratch{'yacc-done'};
5269 $language_scratch{'yacc-done'} = 1;
5271 reject_var 'YACCFLAGS', "`YACCFLAGS' obsolete; use `YFLAGS' instead";
5273 &yacc_lex_finish_helper
5274 if count_files_for_language ('yacc') > 1;
5275 }
5278 sub lang_lex_finish
5279 {
5280 return if defined $language_scratch{'lex-done'};
5281 $language_scratch{'lex-done'} = 1;
5283 &yacc_lex_finish_helper
5284 if count_files_for_language ('lex') > 1;
5285 }
5288 # Given a hash table of linker names, pick the name that has the most
5289 # precedence. This is lame, but something has to have global
5290 # knowledge in order to eliminate the conflict. Add more linkers as
5291 # required.
5292 sub resolve_linker
5293 {
5294 my (%linkers) = @_;
5296 foreach my $l (qw(GCJLINK CXXLINK F77LINK FCLINK OBJCLINK))
5297 {
5298 return $l if defined $linkers{$l};
5299 }
5300 return 'LINK';
5301 }
5303 # Called to indicate that an extension was used.
5304 sub saw_extension
5305 {
5306 my ($ext) = @_;
5307 if (! defined $extension_seen{$ext})
5308 {
5309 $extension_seen{$ext} = 1;
5310 }
5311 else
5312 {
5313 ++$extension_seen{$ext};
5314 }
5315 }
5317 # Return the number of files seen for a given language. Knows about
5318 # special cases we care about. FIXME: this is hideous. We need
5319 # something that involves real language objects. For instance yacc
5320 # and yaccxx could both derive from a common yacc class which would
5321 # know about the strange ylwrap requirement. (Or better yet we could
5322 # just not support legacy yacc!)
5323 sub count_files_for_language
5324 {
5325 my ($name) = @_;
5327 my @names;
5328 if ($name eq 'yacc' || $name eq 'yaccxx')
5329 {
5330 @names = ('yacc', 'yaccxx');
5331 }
5332 elsif ($name eq 'lex' || $name eq 'lexxx')
5333 {
5334 @names = ('lex', 'lexxx');
5335 }
5336 else
5337 {
5338 @names = ($name);
5339 }
5341 my $r = 0;
5342 foreach $name (@names)
5343 {
5344 my $lang = $languages{$name};
5345 foreach my $ext (@{$lang->extensions})
5346 {
5347 $r += $extension_seen{$ext}
5348 if defined $extension_seen{$ext};
5349 }
5350 }
5352 return $r
5353 }
5355 # Called to ask whether source files have been seen . If HEADERS is 1,
5356 # headers can be included.
5357 sub saw_sources_p
5358 {
5359 my ($headers) = @_;
5361 # count all the sources
5362 my $count = 0;
5363 foreach my $val (values %extension_seen)
5364 {
5365 $count += $val;
5366 }
5368 if (!$headers)
5369 {
5370 $count -= count_files_for_language ('header');
5371 }
5373 return $count > 0;
5374 }
5377 # register_language (%ATTRIBUTE)
5378 # ------------------------------
5379 # Register a single language.
5380 # Each %ATTRIBUTE is of the form ATTRIBUTE => VALUE.
5381 sub register_language (%)
5382 {
5383 my (%option) = @_;
5385 # Set the defaults.
5386 $option{'ansi'} = 0
5387 unless defined $option{'ansi'};
5388 $option{'autodep'} = 'no'
5389 unless defined $option{'autodep'};
5390 $option{'linker'} = ''
5391 unless defined $option{'linker'};
5392 $option{'flags'} = []
5393 unless defined $option{'flags'};
5394 $option{'output_extensions'} = sub { return ( '.$(OBJEXT)', '.lo' ) }
5395 unless defined $option{'output_extensions'};
5397 my $lang = new Language (%option);
5399 # Fill indexes.
5400 $extension_map{$_} = $lang->name foreach @{$lang->extensions};
5401 $languages{$lang->name} = $lang;
5403 # Update the pattern of known extensions.
5404 accept_extensions (@{$lang->extensions});
5406 # Upate the $suffix_rule map.
5407 foreach my $suffix (@{$lang->extensions})
5408 {
5409 foreach my $dest (&{$lang->output_extensions} ($suffix))
5410 {
5411 register_suffix_rule (INTERNAL, $suffix, $dest);
5412 }
5413 }
5414 }
5416 # derive_suffix ($EXT, $OBJ)
5417 # --------------------------
5418 # This function is used to find a path from a user-specified suffix $EXT
5419 # to $OBJ or to some other suffix we recognize internally, e.g. `cc'.
5420 sub derive_suffix ($$)
5421 {
5422 my ($source_ext, $obj) = @_;
5424 while (! $extension_map{$source_ext}
5425 && $source_ext ne $obj
5426 && exists $suffix_rules->{$source_ext}
5427 && exists $suffix_rules->{$source_ext}{$obj})
5428 {
5429 $source_ext = $suffix_rules->{$source_ext}{$obj}[0];
5430 }
5432 return $source_ext;
5433 }
5436 ################################################################
5438 # Pretty-print something and append to output_rules.
5439 sub pretty_print_rule
5440 {
5441 $output_rules .= &makefile_wrap (@_);
5442 }
5445 ################################################################
5448 ## -------------------------------- ##
5449 ## Handling the conditional stack. ##
5450 ## -------------------------------- ##
5453 # $STRING
5454 # make_conditional_string ($NEGATE, $COND)
5455 # ----------------------------------------
5456 sub make_conditional_string ($$)
5457 {
5458 my ($negate, $cond) = @_;
5459 $cond = "${cond}_TRUE"
5460 unless $cond =~ /^TRUE|FALSE$/;
5461 $cond = Automake::Condition::conditional_negate ($cond)
5462 if $negate;
5463 return $cond;
5464 }
5467 # $COND
5468 # cond_stack_if ($NEGATE, $COND, $WHERE)
5469 # --------------------------------------
5470 sub cond_stack_if ($$$)
5471 {
5472 my ($negate, $cond, $where) = @_;
5474 error $where, "$cond does not appear in AM_CONDITIONAL"
5475 if ! $configure_cond{$cond} && $cond !~ /^TRUE|FALSE$/;
5477 push (@cond_stack, make_conditional_string ($negate, $cond));
5479 return new Automake::Condition (@cond_stack);
5480 }
5483 # $COND
5484 # cond_stack_else ($NEGATE, $COND, $WHERE)
5485 # ----------------------------------------
5486 sub cond_stack_else ($$$)
5487 {
5488 my ($negate, $cond, $where) = @_;
5490 if (! @cond_stack)
5491 {
5492 error $where, "else without if";
5493 return FALSE;
5494 }
5496 $cond_stack[$#cond_stack] =
5497 Automake::Condition::conditional_negate ($cond_stack[$#cond_stack]);
5499 # If $COND is given, check against it.
5500 if (defined $cond)
5501 {
5502 $cond = make_conditional_string ($negate, $cond);
5504 error ($where, "else reminder ($negate$cond) incompatible with "
5505 . "current conditional: $cond_stack[$#cond_stack]")
5506 if $cond_stack[$#cond_stack] ne $cond;
5507 }
5509 return new Automake::Condition (@cond_stack);
5510 }
5513 # $COND
5514 # cond_stack_endif ($NEGATE, $COND, $WHERE)
5515 # -----------------------------------------
5516 sub cond_stack_endif ($$$)
5517 {
5518 my ($negate, $cond, $where) = @_;
5519 my $old_cond;
5521 if (! @cond_stack)
5522 {
5523 error $where, "endif without if";
5524 return TRUE;
5525 }
5527 # If $COND is given, check against it.
5528 if (defined $cond)
5529 {
5530 $cond = make_conditional_string ($negate, $cond);
5532 error ($where, "endif reminder ($negate$cond) incompatible with "
5533 . "current conditional: $cond_stack[$#cond_stack]")
5534 if $cond_stack[$#cond_stack] ne $cond;
5535 }
5537 pop @cond_stack;
5539 return new Automake::Condition (@cond_stack);
5540 }
5546 ## ------------------------ ##
5547 ## Handling the variables. ##
5548 ## ------------------------ ##
5551 # &define_pretty_variable ($VAR, $COND, $WHERE, @VALUE)
5552 # -----------------------------------------------------
5553 # Like define_variable, but the value is a list, and the variable may
5554 # be defined conditionally. The second argument is the Condition
5555 # under which the value should be defined; this should be the empty
5556 # string to define the variable unconditionally. The third argument
5557 # is a list holding the values to use for the variable. The value is
5558 # pretty printed in the output file.
5559 sub define_pretty_variable ($$$@)
5560 {
5561 my ($var, $cond, $where, @value) = @_;
5563 if (! vardef ($var, $cond))
5564 {
5565 Automake::Variable::define ($var, VAR_AUTOMAKE, '', $cond, "@value",
5566 '', $where, VAR_PRETTY);
5567 rvar ($var)->rdef ($cond)->set_seen;
5568 }
5569 }
5572 # define_variable ($VAR, $VALUE, $WHERE)
5573 # --------------------------------------
5574 # Define a new user variable VAR to VALUE, but only if not already defined.
5575 sub define_variable ($$$)
5576 {
5577 my ($var, $value, $where) = @_;
5578 define_pretty_variable ($var, TRUE, $where, $value);
5579 }
5582 # define_files_variable ($VAR, \@BASENAME, $EXTENSION, $WHERE)
5583 # -----------------------------------------------------------
5584 # Define the $VAR which content is the list of file names composed of
5585 # a @BASENAME and the $EXTENSION.
5586 sub define_files_variable ($\@$$)
5587 {
5588 my ($var, $basename, $extension, $where) = @_;
5589 define_variable ($var,
5590 join (' ', map { "$_.$extension" } @$basename),
5591 $where);
5592 }
5595 # Like define_variable, but define a variable to be the configure
5596 # substitution by the same name.
5597 sub define_configure_variable ($)
5598 {
5599 my ($var) = @_;
5601 my $pretty = VAR_ASIS;
5602 my $owner = VAR_CONFIGURE;
5604 # Do not output the ANSI2KNR configure variable -- we AC_SUBST
5605 # it in protos.m4, but later redefine it elsewhere. This is
5606 # pretty hacky. We also don't output AMDEPBACKSLASH: it might
5607 # be subst'd by `\', which certainly would not be appreciated by
5608 # Make.
5609 if ($var eq 'ANSI2KNR' || $var eq 'AMDEPBACKSLASH')
5610 {
5611 $pretty = VAR_SILENT;
5612 $owner = VAR_AUTOMAKE;
5613 }
5615 Automake::Variable::define ($var, $owner, '', TRUE, subst $var,
5616 '', $configure_vars{$var}, $pretty);
5617 }
5620 # define_compiler_variable ($LANG)
5621 # --------------------------------
5622 # Define a compiler variable. We also handle defining the `LT'
5623 # version of the command when using libtool.
5624 sub define_compiler_variable ($)
5625 {
5626 my ($lang) = @_;
5628 my ($var, $value) = ($lang->compiler, $lang->compile);
5629 my $libtool_tag = '';
5630 $libtool_tag = '--tag=' . $lang->libtool_tag . ' '
5631 if $lang->libtool_tag && exists $libtool_tags{$lang->libtool_tag};
5632 &define_variable ($var, $value, INTERNAL);
5633 &define_variable ("LT$var",
5634 "\$(LIBTOOL) --mode=compile $libtool_tag$value",
5635 INTERNAL)
5636 if var ('LIBTOOL');
5637 }
5640 # define_linker_variable ($LANG)
5641 # ------------------------------
5642 # Define linker variables.
5643 sub define_linker_variable ($)
5644 {
5645 my ($lang) = @_;
5647 my ($var, $value) = ($lang->lder, $lang->ld);
5648 my $libtool_tag = '';
5649 $libtool_tag = '--tag=' . $lang->libtool_tag . ' '
5650 if $lang->libtool_tag && exists $libtool_tags{$lang->libtool_tag};
5651 # CCLD = $(CC).
5652 &define_variable ($lang->lder, $lang->ld, INTERNAL);
5653 # CCLINK = $(CCLD) blah blah...
5654 &define_variable ($lang->linker,
5655 ((var ('LIBTOOL') ?
5656 '$(LIBTOOL) --mode=link ' . $libtool_tag : '')
5657 . $lang->link),
5658 INTERNAL);
5659 }
5661 ################################################################
5663 # &check_trailing_slash ($WHERE, $LINE)
5664 # --------------------------------------
5665 # Return 1 iff $LINE ends with a slash.
5666 # Might modify $LINE.
5667 sub check_trailing_slash ($\$)
5668 {
5669 my ($where, $line) = @_;
5671 # Ignore `##' lines.
5672 return 0 if $$line =~ /$IGNORE_PATTERN/o;
5674 # Catch and fix a common error.
5675 msg "syntax", $where, "whitespace following trailing backslash"
5676 if $$line =~ s/\\\s+\n$/\\\n/;
5678 return $$line =~ /\\$/;
5679 }
5682 # &read_am_file ($AMFILE, $WHERE)
5683 # -------------------------------
5684 # Read Makefile.am and set up %contents. Simultaneously copy lines
5685 # from Makefile.am into $output_trailer, or define variables as
5686 # appropriate. NOTE we put rules in the trailer section. We want
5687 # user rules to come after our generated stuff.
5688 sub read_am_file ($$)
5689 {
5690 my ($amfile, $where) = @_;
5692 my $am_file = new Automake::XFile ("< $amfile");
5693 verb "reading $amfile";
5695 # Keep track of the youngest output dependency.
5696 my $mtime = mtime $amfile;
5697 $output_deps_greatest_timestamp = $mtime
5698 if $mtime > $output_deps_greatest_timestamp;
5700 my $spacing = '';
5701 my $comment = '';
5702 my $blank = 0;
5703 my $saw_bk = 0;
5705 use constant IN_VAR_DEF => 0;
5706 use constant IN_RULE_DEF => 1;
5707 use constant IN_COMMENT => 2;
5708 my $prev_state = IN_RULE_DEF;
5710 while ($_ = $am_file->getline)
5711 {
5712 $where->set ("$amfile:$.");
5713 if (/$IGNORE_PATTERN/o)
5714 {
5715 # Merely delete comments beginning with two hashes.
5716 }
5717 elsif (/$WHITE_PATTERN/o)
5718 {
5719 error $where, "blank line following trailing backslash"
5720 if $saw_bk;
5721 # Stick a single white line before the incoming macro or rule.
5722 $spacing = "\n";
5723 $blank = 1;
5724 # Flush all comments seen so far.
5725 if ($comment ne '')
5726 {
5727 $output_vars .= $comment;
5728 $comment = '';
5729 }
5730 }
5731 elsif (/$COMMENT_PATTERN/o)
5732 {
5733 # Stick comments before the incoming macro or rule. Make
5734 # sure a blank line precedes the first block of comments.
5735 $spacing = "\n" unless $blank;
5736 $blank = 1;
5737 $comment .= $spacing . $_;
5738 $spacing = '';
5739 $prev_state = IN_COMMENT;
5740 }
5741 else
5742 {
5743 last;
5744 }
5745 $saw_bk = check_trailing_slash ($where, $_);
5746 }
5748 # We save the conditional stack on entry, and then check to make
5749 # sure it is the same on exit. This lets us conditionally include
5750 # other files.
5751 my @saved_cond_stack = @cond_stack;
5752 my $cond = new Automake::Condition (@cond_stack);
5754 my $last_var_name = '';
5755 my $last_var_type = '';
5756 my $last_var_value = '';
5757 my $last_where;
5758 # FIXME: shouldn't use $_ in this loop; it is too big.
5759 while ($_)
5760 {
5761 $where->set ("$amfile:$.");
5763 # Make sure the line is \n-terminated.
5764 chomp;
5765 $_ .= "\n";
5767 # Don't look at MAINTAINER_MODE_TRUE here. That shouldn't be
5768 # used by users. @MAINT@ is an anachronism now.
5769 $_ =~ s/\@MAINT\@//g
5770 unless $seen_maint_mode;
5772 my $new_saw_bk = check_trailing_slash ($where, $_);
5774 if (/$IGNORE_PATTERN/o)
5775 {
5776 # Merely delete comments beginning with two hashes.
5777 }
5778 elsif (/$WHITE_PATTERN/o)
5779 {
5780 # Stick a single white line before the incoming macro or rule.
5781 $spacing = "\n";
5782 error $where, "blank line following trailing backslash"
5783 if $saw_bk;
5784 }
5785 elsif (/$COMMENT_PATTERN/o)
5786 {
5787 # Stick comments before the incoming macro or rule.
5788 $comment .= $spacing . $_;
5789 $spacing = '';
5790 error $where, "comment following trailing backslash"
5791 if $saw_bk && $comment eq '';
5792 $prev_state = IN_COMMENT;
5793 }
5794 elsif ($saw_bk)
5795 {
5796 if ($prev_state == IN_RULE_DEF)
5797 {
5798 my $cond = new Automake::Condition @cond_stack;
5799 $output_trailer .= $cond->subst_string;
5800 $output_trailer .= $_;
5801 }
5802 elsif ($prev_state == IN_COMMENT)
5803 {
5804 # If the line doesn't start with a `#', add it.
5805 # We do this because a continued comment like
5806 # # A = foo \
5807 # bar \
5808 # baz
5809 # is not portable. BSD make doesn't honor
5810 # escaped newlines in comments.
5811 s/^#?/#/;
5812 $comment .= $spacing . $_;
5813 }
5814 else # $prev_state == IN_VAR_DEF
5815 {
5816 $last_var_value .= ' '
5817 unless $last_var_value =~ /\s$/;
5818 $last_var_value .= $_;
5820 if (!/\\$/)
5821 {
5822 Automake::Variable::define ($last_var_name, VAR_MAKEFILE,
5823 $last_var_type, $cond,
5824 $last_var_value, $comment,
5825 $last_where, VAR_ASIS)
5826 if $cond != FALSE;
5827 $comment = $spacing = '';
5828 }
5829 }
5830 }
5832 elsif (/$IF_PATTERN/o)
5833 {
5834 $cond = cond_stack_if ($1, $2, $where);
5835 }
5836 elsif (/$ELSE_PATTERN/o)
5837 {
5838 $cond = cond_stack_else ($1, $2, $where);
5839 }
5840 elsif (/$ENDIF_PATTERN/o)
5841 {
5842 $cond = cond_stack_endif ($1, $2, $where);
5843 }
5845 elsif (/$RULE_PATTERN/o)
5846 {
5847 # Found a rule.
5848 $prev_state = IN_RULE_DEF;
5850 # For now we have to output all definitions of user rules
5851 # and can't diagnose duplicates (see the comment in
5852 # rule_define). So we go on and ignore the return value.
5853 Automake::Rule::define ($1, $amfile, RULE_USER, $cond, $where);
5855 check_variable_expansions ($_, $where);
5857 $output_trailer .= $comment . $spacing;
5858 my $cond = new Automake::Condition @cond_stack;
5859 $output_trailer .= $cond->subst_string;
5860 $output_trailer .= $_;
5861 $comment = $spacing = '';
5862 }
5863 elsif (/$ASSIGNMENT_PATTERN/o)
5864 {
5865 # Found a macro definition.
5866 $prev_state = IN_VAR_DEF;
5867 $last_var_name = $1;
5868 $last_var_type = $2;
5869 $last_var_value = $3;
5870 $last_where = $where->clone;
5871 if ($3 ne '' && substr ($3, -1) eq "\\")
5872 {
5873 # We preserve the `\' because otherwise the long lines
5874 # that are generated will be truncated by broken
5875 # `sed's.
5876 $last_var_value = $3 . "\n";
5877 }
5879 if (!/\\$/)
5880 {
5881 Automake::Variable::define ($last_var_name, VAR_MAKEFILE,
5882 $last_var_type, $cond,
5883 $last_var_value, $comment,
5884 $last_where, VAR_ASIS)
5885 if $cond != FALSE;
5886 $comment = $spacing = '';
5887 }
5888 }
5889 elsif (/$INCLUDE_PATTERN/o)
5890 {
5891 my $path = $1;
5893 if ($path =~ s/^\$\(top_srcdir\)\///)
5894 {
5895 push (@include_stack, "\$\(top_srcdir\)/$path");
5896 # Distribute any included file.
5898 # Always use the $(top_srcdir) prefix in DIST_COMMON,
5899 # otherwise OSF make will implicitly copy the included
5900 # file in the build tree during `make distdir' to satisfy
5901 # the dependency.
5902 # (subdircond2.test and subdircond3.test will fail.)
5903 push_dist_common ("\$\(top_srcdir\)/$path");
5904 }
5905 else
5906 {
5907 $path =~ s/\$\(srcdir\)\///;
5908 push (@include_stack, "\$\(srcdir\)/$path");
5909 # Always use the $(srcdir) prefix in DIST_COMMON,
5910 # otherwise OSF make will implicitly copy the included
5911 # file in the build tree during `make distdir' to satisfy
5912 # the dependency.
5913 # (subdircond2.test and subdircond3.test will fail.)
5914 push_dist_common ("\$\(srcdir\)/$path");
5915 $path = $relative_dir . "/" . $path if $relative_dir ne '.';
5916 }
5917 $where->push_context ("`$path' included from here");
5918 &read_am_file ($path, $where);
5919 $where->pop_context;
5920 }
5921 else
5922 {
5923 # This isn't an error; it is probably a continued rule.
5924 # In fact, this is what we assume.
5925 $prev_state = IN_RULE_DEF;
5926 check_variable_expansions ($_, $where);
5927 $output_trailer .= $comment . $spacing;
5928 my $cond = new Automake::Condition @cond_stack;
5929 $output_trailer .= $cond->subst_string;
5930 $output_trailer .= $_;
5931 $comment = $spacing = '';
5932 error $where, "`#' comment at start of rule is unportable"
5933 if $_ =~ /^\t\s*\#/;
5934 }
5936 $saw_bk = $new_saw_bk;
5937 $_ = $am_file->getline;
5938 }
5940 $output_trailer .= $comment;
5942 error ($where, "trailing backslash on last line")
5943 if $saw_bk;
5945 error ($where, (@cond_stack ? "unterminated conditionals: @cond_stack"
5946 : "too many conditionals closed in include file"))
5947 if "@saved_cond_stack" ne "@cond_stack";
5948 }
5951 # define_standard_variables ()
5952 # ----------------------------
5953 # A helper for read_main_am_file which initializes configure variables
5954 # and variables from header-vars.am.
5955 sub define_standard_variables
5956 {
5957 my $saved_output_vars = $output_vars;
5958 my ($comments, undef, $rules) =
5959 file_contents_internal (1, "$libdir/am/header-vars.am",
5960 new Automake::Location);
5962 foreach my $var (sort keys %configure_vars)
5963 {
5964 &define_configure_variable ($var);
5965 }
5967 $output_vars .= $comments . $rules;
5968 }
5970 # Read main am file.
5971 sub read_main_am_file
5972 {
5973 my ($amfile) = @_;
5975 # This supports the strange variable tricks we are about to play.
5976 prog_error (macros_dump () . "variable defined before read_main_am_file")
5977 if (scalar (variables) > 0);
5979 # Generate copyright header for generated Makefile.in.
5980 # We do discard the output of predefined variables, handled below.
5981 $output_vars = ("# $in_file_name generated by automake "
5982 . $VERSION . " from $am_file_name.\n");
5983 $output_vars .= '# ' . subst ('configure_input') . "\n";
5984 $output_vars .= $gen_copyright;
5986 # We want to predefine as many variables as possible. This lets
5987 # the user set them with `+=' in Makefile.am.
5988 &define_standard_variables;
5990 # Read user file, which might override some of our values.
5991 &read_am_file ($amfile, new Automake::Location);
5992 }
5996 ################################################################
5998 # $FLATTENED
5999 # &flatten ($STRING)
6000 # ------------------
6001 # Flatten the $STRING and return the result.
6002 sub flatten
6003 {
6004 $_ = shift;
6006 s/\\\n//somg;
6007 s/\s+/ /g;
6008 s/^ //;
6009 s/ $//;
6011 return $_;
6012 }
6015 # @PARAGRAPHS
6016 # &make_paragraphs ($MAKEFILE, [%TRANSFORM])
6017 # ------------------------------------------
6018 # Load a $MAKEFILE, apply the %TRANSFORM, and return it as a list of
6019 # paragraphs.
6020 sub make_paragraphs ($%)
6021 {
6022 my ($file, %transform) = @_;
6024 # Complete %transform with global options and make it a Perl $command.
6025 # Note that %transform goes last, so it overrides global options.
6026 my $command =
6027 "s/$IGNORE_PATTERN//gm;"
6028 . transform ('CYGNUS' => !! option 'cygnus',
6029 'MAINTAINER-MODE'
6030 => $seen_maint_mode ? subst ('MAINTAINER_MODE_TRUE') : '',
6032 'BZIP2' => !! option 'dist-bzip2',
6033 'COMPRESS' => !! option 'dist-tarZ',
6034 'GZIP' => ! option 'no-dist-gzip',
6035 'SHAR' => !! option 'dist-shar',
6036 'ZIP' => !! option 'dist-zip',
6038 'INSTALL-INFO' => ! option 'no-installinfo',
6039 'INSTALL-MAN' => ! option 'no-installman',
6040 'CK-NEWS' => !! option 'check-news',
6042 'SUBDIRS' => !! var ('SUBDIRS'),
6043 'TOPDIR' => backname ($relative_dir),
6044 'TOPDIR_P' => $relative_dir eq '.',
6046 'BUILD' => $seen_canonical == AC_CANONICAL_SYSTEM,
6047 'HOST' => $seen_canonical,
6048 'TARGET' => $seen_canonical == AC_CANONICAL_SYSTEM,
6050 'LIBTOOL' => !! var ('LIBTOOL'),
6051 'NONLIBTOOL' => 1,
6052 'FIRST' => ! $transformed_files{$file},
6053 %transform)
6054 # We don't need more than two consecutive new-lines.
6055 . 's/\n{3,}/\n\n/g';
6057 $transformed_files{$file} = 1;
6059 # Swallow the file and apply the COMMAND.
6060 my $fc_file = new Automake::XFile "< $file";
6061 # Looks stupid?
6062 verb "reading $file";
6063 my $saved_dollar_slash = $/;
6064 undef $/;
6065 $_ = $fc_file->getline;
6066 $/ = $saved_dollar_slash;
6067 eval $command;
6068 $fc_file->close;
6069 my $content = $_;
6071 # Split at unescaped new lines.
6072 my @lines = split (/(?<!\\)\n/, $content);
6073 my @res;
6075 while (defined ($_ = shift @lines))
6076 {
6077 my $paragraph = "$_";
6078 # If we are a rule, eat as long as we start with a tab.
6079 if (/$RULE_PATTERN/smo)
6080 {
6081 while (defined ($_ = shift @lines) && $_ =~ /^\t/)
6082 {
6083 $paragraph .= "\n$_";
6084 }
6085 unshift (@lines, $_);
6086 }
6088 # If we are a comments, eat as much comments as you can.
6089 elsif (/$COMMENT_PATTERN/smo)
6090 {
6091 while (defined ($_ = shift @lines)
6092 && $_ =~ /$COMMENT_PATTERN/smo)
6093 {
6094 $paragraph .= "\n$_";
6095 }
6096 unshift (@lines, $_);
6097 }
6099 push @res, $paragraph;
6100 $paragraph = '';
6101 }
6103 return @res;
6104 }
6108 # ($COMMENT, $VARIABLES, $RULES)
6109 # &file_contents_internal ($IS_AM, $FILE, $WHERE, [%TRANSFORM])
6110 # -------------------------------------------------------------
6111 # Return contents of a file from $libdir/am, automatically skipping
6112 # macros or rules which are already known. $IS_AM iff the caller is
6113 # reading an Automake file (as opposed to the user's Makefile.am).
6114 sub file_contents_internal ($$$%)
6115 {
6116 my ($is_am, $file, $where, %transform) = @_;
6118 $where->set ($file);
6120 my $result_vars = '';
6121 my $result_rules = '';
6122 my $comment = '';
6123 my $spacing = '';
6125 # The following flags are used to track rules spanning across
6126 # multiple paragraphs.
6127 my $is_rule = 0; # 1 if we are processing a rule.
6128 my $discard_rule = 0; # 1 if the current rule should not be output.
6130 # We save the conditional stack on entry, and then check to make
6131 # sure it is the same on exit. This lets us conditionally include
6132 # other files.
6133 my @saved_cond_stack = @cond_stack;
6134 my $cond = new Automake::Condition (@cond_stack);
6136 foreach (make_paragraphs ($file, %transform))
6137 {
6138 # FIXME: no line number available.
6139 $where->set ($file);
6141 # Sanity checks.
6142 error $where, "blank line following trailing backslash:\n$_"
6143 if /\\$/;
6144 error $where, "comment following trailing backslash:\n$_"
6145 if /\\#/;
6147 if (/^$/)
6148 {
6149 $is_rule = 0;
6150 # Stick empty line before the incoming macro or rule.
6151 $spacing = "\n";
6152 }
6153 elsif (/$COMMENT_PATTERN/mso)
6154 {
6155 $is_rule = 0;
6156 # Stick comments before the incoming macro or rule.
6157 $comment = "$_\n";
6158 }
6160 # Handle inclusion of other files.
6161 elsif (/$INCLUDE_PATTERN/o)
6162 {
6163 if ($cond != FALSE)
6164 {
6165 my $file = ($is_am ? "$libdir/am/" : '') . $1;
6166 $where->push_context ("`$file' included from here");
6167 # N-ary `.=' fails.
6168 my ($com, $vars, $rules)
6169 = file_contents_internal ($is_am, $file, $where, %transform);
6170 $where->pop_context;
6171 $comment .= $com;
6172 $result_vars .= $vars;
6173 $result_rules .= $rules;
6174 }
6175 }
6177 # Handling the conditionals.
6178 elsif (/$IF_PATTERN/o)
6179 {
6180 $cond = cond_stack_if ($1, $2, $file);
6181 }
6182 elsif (/$ELSE_PATTERN/o)
6183 {
6184 $cond = cond_stack_else ($1, $2, $file);
6185 }
6186 elsif (/$ENDIF_PATTERN/o)
6187 {
6188 $cond = cond_stack_endif ($1, $2, $file);
6189 }
6191 # Handling rules.
6192 elsif (/$RULE_PATTERN/mso)
6193 {
6194 $is_rule = 1;
6195 $discard_rule = 0;
6196 # Separate relationship from optional actions: the first
6197 # `new-line tab" not preceded by backslash (continuation
6198 # line).
6199 my $paragraph = $_;
6200 /^(.*?)(?:(?<!\\)\n(\t.*))?$/s;
6201 my ($relationship, $actions) = ($1, $2 || '');
6203 # Separate targets from dependencies: the first colon.
6204 $relationship =~ /^([^:]+\S+) *: *(.*)$/som;
6205 my ($targets, $dependencies) = ($1, $2);
6206 # Remove the escaped new lines.
6207 # I don't know why, but I have to use a tmp $flat_deps.
6208 my $flat_deps = &flatten ($dependencies);
6209 my @deps = split (' ', $flat_deps);
6211 foreach (split (' ' , $targets))
6212 {
6213 # FIXME: 1. We are not robust to people defining several targets
6214 # at once, only some of them being in %dependencies. The
6215 # actions from the targets in %dependencies are usually generated
6216 # from the content of %actions, but if some targets in $targets
6217 # are not in %dependencies the ELSE branch will output
6218 # a rule for all $targets (i.e. the targets which are both
6219 # in %dependencies and $targets will have two rules).
6221 # FIXME: 2. The logic here is not able to output a
6222 # multi-paragraph rule several time (e.g. for each condition
6223 # it is defined for) because it only knows the first paragraph.
6225 # FIXME: 3. We are not robust to people defining a subset
6226 # of a previously defined "multiple-target" rule. E.g.
6227 # `foo:' after `foo bar:'.
6229 # Output only if not in FALSE.
6230 if (defined $dependencies{$_} && $cond != FALSE)
6231 {
6232 &depend ($_, @deps);
6233 if ($actions{$_})
6234 {
6235 $actions{$_} .= "\n$actions" if $actions;
6236 }
6237 else
6238 {
6239 $actions{$_} = $actions;
6240 }
6241 }
6242 else
6243 {
6244 # Free-lance dependency. Output the rule for all the
6245 # targets instead of one by one.
6246 my @undefined_conds =
6247 Automake::Rule::define ($targets, $file,
6248 $is_am ? RULE_AUTOMAKE : RULE_USER,
6249 $cond, $where);
6250 for my $undefined_cond (@undefined_conds)
6251 {
6252 my $condparagraph = $paragraph;
6253 $condparagraph =~ s/^/$undefined_cond->subst_string/gme;
6254 $result_rules .= "$spacing$comment$condparagraph\n";
6255 }
6256 if (scalar @undefined_conds == 0)
6257 {
6258 # Remember to discard next paragraphs
6259 # if they belong to this rule.
6260 # (but see also FIXME: #2 above.)
6261 $discard_rule = 1;
6262 }
6263 $comment = $spacing = '';
6264 last;
6265 }
6266 }
6267 }
6269 elsif (/$ASSIGNMENT_PATTERN/mso)
6270 {
6271 my ($var, $type, $val) = ($1, $2, $3);
6272 error $where, "variable `$var' with trailing backslash"
6273 if /\\$/;
6275 $is_rule = 0;
6277 Automake::Variable::define ($var,
6278 $is_am ? VAR_AUTOMAKE : VAR_MAKEFILE,
6279 $type, $cond, $val, $comment, $where,
6280 VAR_ASIS)
6281 if $cond != FALSE;
6283 $comment = $spacing = '';
6284 }
6285 else
6286 {
6287 # This isn't an error; it is probably some tokens which
6288 # configure is supposed to replace, such as `@SET-MAKE@',
6289 # or some part of a rule cut by an if/endif.
6290 if (! $cond->false && ! ($is_rule && $discard_rule))
6291 {
6292 s/^/$cond->subst_string/gme;
6293 $result_rules .= "$spacing$comment$_\n";
6294 }
6295 $comment = $spacing = '';
6296 }
6297 }
6299 error ($where, @cond_stack ?
6300 "unterminated conditionals: @cond_stack" :
6301 "too many conditionals closed in include file")
6302 if "@saved_cond_stack" ne "@cond_stack";
6304 return ($comment, $result_vars, $result_rules);
6305 }
6308 # $CONTENTS
6309 # &file_contents ($BASENAME, $WHERE, [%TRANSFORM])
6310 # ------------------------------------------------
6311 # Return contents of a file from $libdir/am, automatically skipping
6312 # macros or rules which are already known.
6313 sub file_contents ($$%)
6314 {
6315 my ($basename, $where, %transform) = @_;
6316 my ($comments, $variables, $rules) =
6317 file_contents_internal (1, "$libdir/am/$basename.am", $where,
6318 %transform);
6319 return "$comments$variables$rules";
6320 }
6323 # $REGEXP
6324 # &transform (%PAIRS)
6325 # -------------------
6326 # For each ($TOKEN, $VAL) in %PAIRS produce a replacement expression
6327 # suitable for file_contents which:
6328 # - replaces %$TOKEN% with $VAL,
6329 # - enables/disables ?$TOKEN? and ?!$TOKEN?,
6330 # - replaces %?$TOKEN% with TRUE or FALSE.
6331 sub transform (%)
6332 {
6333 my (%pairs) = @_;
6334 my $result = '';
6336 while (my ($token, $val) = each %pairs)
6337 {
6338 $result .= "s/\Q%$token%\E/\Q$val\E/gm;";
6339 if ($val)
6340 {
6341 $result .= "s/\Q?$token?\E//gm;s/^.*\Q?!$token?\E.*\\n//gm;";
6342 $result .= "s/\Q%?$token%\E/TRUE/gm;";
6343 }
6344 else
6345 {
6346 $result .= "s/\Q?!$token?\E//gm;s/^.*\Q?$token?\E.*\\n//gm;";
6347 $result .= "s/\Q%?$token%\E/FALSE/gm;";
6348 }
6349 }
6351 return $result;
6352 }
6355 # &append_exeext ($MACRO)
6356 # -----------------------
6357 # Macro is an Automake magic macro which primary is PROGRAMS, e.g.
6358 # bin_PROGRAMS. Make sure these programs have $(EXEEXT) appended.
6359 sub append_exeext ($)
6360 {
6361 my ($macro) = @_;
6363 prog_error "append_exeext ($macro)"
6364 unless $macro =~ /_PROGRAMS$/;
6366 transform_variable_recursively
6367 ($macro, $macro, 'am__EXEEXT', 0, INTERNAL,
6368 sub {
6369 my ($subvar, $val, $cond, $full_cond) = @_;
6370 # Append $(EXEEXT) unless the user did it already, or it's a
6371 # @substitution@.
6372 $val .= '$(EXEEXT)' unless $val =~ /(?:\$\(EXEEXT\)$|^[@]\w+[@]$)/;
6373 return $val;
6374 });
6375 }
6378 # @PREFIX
6379 # &am_primary_prefixes ($PRIMARY, $CAN_DIST, @PREFIXES)
6380 # -----------------------------------------------------
6381 # Find all variable prefixes that are used for install directories. A
6382 # prefix `zar' qualifies iff:
6383 #
6384 # * `zardir' is a variable.
6385 # * `zar_PRIMARY' is a variable.
6386 #
6387 # As a side effect, it looks for misspellings. It is an error to have
6388 # a variable ending in a "reserved" suffix whose prefix is unknown, e.g.
6389 # "bin_PROGRAMS". However, unusual prefixes are allowed if a variable
6390 # of the same name (with "dir" appended) exists. For instance, if the
6391 # variable "zardir" is defined, then "zar_PROGRAMS" becomes valid.
6392 # This is to provide a little extra flexibility in those cases which
6393 # need it.
6394 sub am_primary_prefixes ($$@)
6395 {
6396 my ($primary, $can_dist, @prefixes) = @_;
6398 local $_;
6399 my %valid = map { $_ => 0 } @prefixes;
6400 $valid{'EXTRA'} = 0;
6401 foreach my $var (variables)
6402 {
6403 # Automake is allowed to define variables that look like primaries
6404 # but which aren't. E.g. INSTALL_sh_DATA.
6405 # Autoconf can also define variables like INSTALL_DATA, so
6406 # ignore all configure variables (at least those which are not
6407 # redefined in Makefile.am).
6408 # FIXME: We should make sure that these variables are not
6409 # conditionally defined (or else adjust the condition below).
6410 my $def = $var->def (TRUE);
6411 next if $def && $def->owner != VAR_MAKEFILE;
6413 my $varname = $var->name;
6415 if ($varname =~ /^(nobase_)?(dist_|nodist_)?(.*)_$primary$/)
6416 {
6417 my ($base, $dist, $X) = ($1 || '', $2 || '', $3 || '');
6418 if ($dist ne '' && ! $can_dist)
6419 {
6420 err_var ($var,
6421 "invalid variable `$varname': `dist' is forbidden");
6422 }
6423 # Standard directories must be explicitly allowed.
6424 elsif (! defined $valid{$X} && exists $standard_prefix{$X})
6425 {
6426 err_var ($var,
6427 "`${X}dir' is not a legitimate directory " .
6428 "for `$primary'");
6429 }
6430 # A not explicitly valid directory is allowed if Xdir is defined.
6431 elsif (! defined $valid{$X} &&
6432 $var->requires_variables ("`$varname' is used", "${X}dir"))
6433 {
6434 # Nothing to do. Any error message has been output
6435 # by $var->requires_variables.
6436 }
6437 else
6438 {
6439 # Ensure all extended prefixes are actually used.
6440 $valid{"$base$dist$X"} = 1;
6441 }
6442 }
6443 }
6445 # Return only those which are actually defined.
6446 return sort grep { var ($_ . '_' . $primary) } keys %valid;
6447 }
6450 # Handle `where_HOW' variable magic. Does all lookups, generates
6451 # install code, and possibly generates code to define the primary
6452 # variable. The first argument is the name of the .am file to munge,
6453 # the second argument is the primary variable (e.g. HEADERS), and all
6454 # subsequent arguments are possible installation locations.
6455 #
6456 # Returns list of [$location, $value] pairs, where
6457 # $value's are the values in all where_HOW variable, and $location
6458 # there associated location (the place here their parent variables were
6459 # defined).
6460 #
6461 # FIXME: this should be rewritten to be cleaner. It should be broken
6462 # up into multiple functions.
6463 #
6464 # Usage is: am_install_var (OPTION..., file, HOW, where...)
6465 sub am_install_var
6466 {
6467 my (@args) = @_;
6469 my $do_require = 1;
6470 my $can_dist = 0;
6471 my $default_dist = 0;
6472 while (@args)
6473 {
6474 if ($args[0] eq '-noextra')
6475 {
6476 $do_require = 0;
6477 }
6478 elsif ($args[0] eq '-candist')
6479 {
6480 $can_dist = 1;
6481 }
6482 elsif ($args[0] eq '-defaultdist')
6483 {
6484 $default_dist = 1;
6485 $can_dist = 1;
6486 }
6487 elsif ($args[0] !~ /^-/)
6488 {
6489 last;
6490 }
6491 shift (@args);
6492 }
6494 my ($file, $primary, @prefix) = @args;
6496 # Now that configure substitutions are allowed in where_HOW
6497 # variables, it is an error to actually define the primary. We
6498 # allow `JAVA', as it is customarily used to mean the Java
6499 # interpreter. This is but one of several Java hacks. Similarly,
6500 # `PYTHON' is customarily used to mean the Python interpreter.
6501 reject_var $primary, "`$primary' is an anachronism"
6502 unless $primary eq 'JAVA' || $primary eq 'PYTHON';
6504 # Get the prefixes which are valid and actually used.
6505 @prefix = am_primary_prefixes ($primary, $can_dist, @prefix);
6507 # If a primary includes a configure substitution, then the EXTRA_
6508 # form is required. Otherwise we can't properly do our job.
6509 my $require_extra;
6511 my @used = ();
6512 my @result = ();
6514 foreach my $X (@prefix)
6515 {
6516 my $nodir_name = $X;
6517 my $one_name = $X . '_' . $primary;
6518 my $one_var = var $one_name;
6520 my $strip_subdir = 1;
6521 # If subdir prefix should be preserved, do so.
6522 if ($nodir_name =~ /^nobase_/)
6523 {
6524 $strip_subdir = 0;
6525 $nodir_name =~ s/^nobase_//;
6526 }
6528 # If files should be distributed, do so.
6529 my $dist_p = 0;
6530 if ($can_dist)
6531 {
6532 $dist_p = (($default_dist && $nodir_name !~ /^nodist_/)
6533 || (! $default_dist && $nodir_name =~ /^dist_/));
6534 $nodir_name =~ s/^(dist|nodist)_//;
6535 }
6538 # Use the location of the currently processed variable.
6539 # We are not processing a particular condition, so pick the first
6540 # available.
6541 my $tmpcond = $one_var->conditions->one_cond;
6542 my $where = $one_var->rdef ($tmpcond)->location->clone;
6544 # Append actual contents of where_PRIMARY variable to
6545 # @result, skipping @substitutions@.
6546 foreach my $locvals ($one_var->value_as_list_recursive (location => 1))
6547 {
6548 my ($loc, $value) = @$locvals;
6549 # Skip configure substitutions.
6550 if ($value =~ /^\@.*\@$/)
6551 {
6552 if ($nodir_name eq 'EXTRA')
6553 {
6554 error ($where,
6555 "`$one_name' contains configure substitution, "
6556 . "but shouldn't");
6557 }
6558 # Check here to make sure variables defined in
6559 # configure.ac do not imply that EXTRA_PRIMARY
6560 # must be defined.
6561 elsif (! defined $configure_vars{$one_name})
6562 {
6563 $require_extra = $one_name
6564 if $do_require;
6565 }
6566 }
6567 else
6568 {
6569 push (@result, $locvals);
6570 }
6571 }
6572 # A blatant hack: we rewrite each _PROGRAMS primary to include
6573 # EXEEXT.
6574 append_exeext ($one_name)
6575 if $primary eq 'PROGRAMS';
6576 # "EXTRA" shouldn't be used when generating clean targets,
6577 # all, or install targets. We used to warn if EXTRA_FOO was
6578 # defined uselessly, but this was annoying.
6579 next
6580 if $nodir_name eq 'EXTRA';
6582 if ($nodir_name eq 'check')
6583 {
6584 push (@check, '$(' . $one_name . ')');
6585 }
6586 else
6587 {
6588 push (@used, '$(' . $one_name . ')');
6589 }
6591 # Is this to be installed?
6592 my $install_p = $nodir_name ne 'noinst' && $nodir_name ne 'check';
6594 # If so, with install-exec? (or install-data?).
6595 my $exec_p = ($nodir_name =~ /$EXEC_DIR_PATTERN/o);
6597 my $check_options_p = $install_p && !! option 'std-options';
6599 # Use the location of the currently processed variable as context.
6600 $where->push_context ("while processing `$one_name'");
6602 # The variable containing all file to distribute.
6603 my $distvar = "\$($one_name)";
6604 $distvar = shadow_unconditionally ($one_name, $where)
6605 if ($dist_p && $one_var->has_conditional_contents);
6607 # Singular form of $PRIMARY.
6608 (my $one_primary = $primary) =~ s/S$//;
6609 $output_rules .= &file_contents ($file, $where,
6610 PRIMARY => $primary,
6611 ONE_PRIMARY => $one_primary,
6612 DIR => $X,
6613 NDIR => $nodir_name,
6614 BASE => $strip_subdir,
6616 EXEC => $exec_p,
6617 INSTALL => $install_p,
6618 DIST => $dist_p,
6619 DISTVAR => $distvar,
6620 'CK-OPTS' => $check_options_p);
6621 }
6623 # The JAVA variable is used as the name of the Java interpreter.
6624 # The PYTHON variable is used as the name of the Python interpreter.
6625 if (@used && $primary ne 'JAVA' && $primary ne 'PYTHON')
6626 {
6627 # Define it.
6628 define_pretty_variable ($primary, TRUE, INTERNAL, @used);
6629 $output_vars .= "\n";
6630 }
6632 err_var ($require_extra,
6633 "`$require_extra' contains configure substitution,\n"
6634 . "but `EXTRA_$primary' not defined")
6635 if ($require_extra && ! var ('EXTRA_' . $primary));
6637 # Push here because PRIMARY might be configure time determined.
6638 push (@all, '$(' . $primary . ')')
6639 if @used && $primary ne 'JAVA' && $primary ne 'PYTHON';
6641 # Make the result unique. This lets the user use conditionals in
6642 # a natural way, but still lets us program lazily -- we don't have
6643 # to worry about handling a particular object more than once.
6644 # We will keep only one location per object.
6645 my %result = ();
6646 for my $pair (@result)
6647 {
6648 my ($loc, $val) = @$pair;
6649 $result{$val} = $loc;
6650 }
6651 my @l = sort keys %result;
6652 return map { [$result{$_}->clone, $_] } @l;
6653 }
6656 ################################################################
6658 # Each key in this hash is the name of a directory holding a
6659 # Makefile.in. These variables are local to `is_make_dir'.
6660 my %make_dirs = ();
6661 my $make_dirs_set = 0;
6663 sub is_make_dir
6664 {
6665 my ($dir) = @_;
6666 if (! $make_dirs_set)
6667 {
6668 foreach my $iter (@configure_input_files)
6669 {
6670 $make_dirs{dirname ($iter)} = 1;
6671 }
6672 # We also want to notice Makefile.in's.
6673 foreach my $iter (@other_input_files)
6674 {
6675 if ($iter =~ /Makefile\.in$/)
6676 {
6677 $make_dirs{dirname ($iter)} = 1;
6678 }
6679 }
6680 $make_dirs_set = 1;
6681 }
6682 return defined $make_dirs{$dir};
6683 }
6685 ################################################################
6687 # Find the aux dir. This should match the algorithm used by
6688 # ./configure. (See the Autoconf documentation for for
6689 # AC_CONFIG_AUX_DIR.)
6690 sub locate_aux_dir ()
6691 {
6692 if (! $config_aux_dir_set_in_configure_ac)
6693 {
6694 # The default auxiliary directory is the first
6695 # of ., .., or ../.. that contains install-sh.
6696 # Assume . if install-sh doesn't exist yet.
6697 for my $dir (qw (. .. ../..))
6698 {
6699 if (-f "$dir/install-sh")
6700 {
6701 $config_aux_dir = $dir;
6702 last;
6703 }
6704 }
6705 $config_aux_dir = '.' unless $config_aux_dir;
6706 }
6707 # Avoid unsightly '/.'s.
6708 $am_config_aux_dir =
6709 '$(top_srcdir)' . ($config_aux_dir eq '.' ? "" : "/$config_aux_dir");
6710 $am_config_aux_dir =~ s,/*$,,;
6711 }
6714 # &maybe_push_required_file ($DIR, $FILE, $FULLFILE)
6715 # --------------------------------------------------
6716 # See if we want to push this file onto dist_common. This function
6717 # encodes the rules for deciding when to do so.
6718 sub maybe_push_required_file
6719 {
6720 my ($dir, $file, $fullfile) = @_;
6722 if ($dir eq $relative_dir)
6723 {
6724 push_dist_common ($file);
6725 return 1;
6726 }
6727 elsif ($relative_dir eq '.' && ! &is_make_dir ($dir))
6728 {
6729 # If we are doing the topmost directory, and the file is in a
6730 # subdir which does not have a Makefile, then we distribute it
6731 # here.
6733 # If a required file is above the source tree, it is important
6734 # to prefix it with `$(srcdir)' so that no VPATH search is
6735 # performed. Otherwise problems occur with Make implementations
6736 # that rewrite and simplify rules whose dependencies are found in a
6737 # VPATH location. Here is an example with OSF1/Tru64 Make.
6738 #
6739 # % cat Makefile
6740 # VPATH = sub
6741 # distdir: ../a
6742 # echo ../a
6743 # % ls
6744 # Makefile a
6745 # % make
6746 # echo a
6747 # a
6748 #
6749 # Dependency `../a' was found in `sub/../a', but this make
6750 # implementation simplified it as `a'. (Note that the sub/
6751 # directory does not even exist.)
6752 #
6753 # This kind of VPATH rewriting seems hard to cancel. The
6754 # distdir.am hack against VPATH rewriting works only when no
6755 # simplification is done, i.e., for dependencies which are in
6756 # subdirectories, not in enclosing directories. Hence, in
6757 # the latter case we use a full path to make sure no VPATH
6758 # search occurs.
6759 $fullfile = '$(srcdir)/' . $fullfile
6760 if $dir =~ m,^\.\.(?:$|/),;
6762 push_dist_common ($fullfile);
6763 return 1;
6764 }
6765 return 0;
6766 }
6769 # If a file name appears as a key in this hash, then it has already
6770 # been checked for. This allows us not to report the same error more
6771 # than once.
6772 my %required_file_not_found = ();
6774 # &require_file_internal ($WHERE, $MYSTRICT, $DIRECTORY, @FILES)
6775 # --------------------------------------------------------------
6776 # Verify that the file must exist in $DIRECTORY, or install it.
6777 # $MYSTRICT is the strictness level at which this file becomes required.
6778 sub require_file_internal ($$$@)
6779 {
6780 my ($where, $mystrict, $dir, @files) = @_;
6782 foreach my $file (@files)
6783 {
6784 my $fullfile = "$dir/$file";
6785 my $found_it = 0;
6786 my $dangling_sym = 0;
6788 if (-l $fullfile && ! -f $fullfile)
6789 {
6790 $dangling_sym = 1;
6791 }
6792 elsif (-f $fullfile)
6793 {
6794 $found_it = 1;
6795 maybe_push_required_file ($dir, $file, $fullfile);
6796 }
6798 # `--force-missing' only has an effect if `--add-missing' is
6799 # specified.
6800 if ($found_it && (! $add_missing || ! $force_missing))
6801 {
6802 next;
6803 }
6804 else
6805 {
6806 # If we've already looked for it, we're done. You might
6807 # wonder why we don't do this before searching for the
6808 # file. If we do that, then something like
6809 # AC_OUTPUT(subdir/foo foo) will fail to put foo.in into
6810 # DIST_COMMON.
6811 if (! $found_it)
6812 {
6813 next if defined $required_file_not_found{$fullfile};
6814 $required_file_not_found{$fullfile} = 1;
6815 }
6817 if ($strictness >= $mystrict)
6818 {
6819 if ($dangling_sym && $add_missing)
6820 {
6821 unlink ($fullfile);
6822 }
6824 my $trailer = '';
6825 my $suppress = 0;
6827 # Only install missing files according to our desired
6828 # strictness level.
6829 my $message = "required file `$fullfile' not found";
6830 if ($add_missing)
6831 {
6832 if (-f ("$libdir/$file"))
6833 {
6834 $suppress = 1;
6836 # Install the missing file. Symlink if we
6837 # can, copy if we must. Note: delete the file
6838 # first, in case it is a dangling symlink.
6839 $message = "installing `$fullfile'";
6840 # Windows Perl will hang if we try to delete a
6841 # file that doesn't exist.
6842 unlink ($fullfile) if -f $fullfile;
6843 if ($symlink_exists && ! $copy_missing)
6844 {
6845 if (! symlink ("$libdir/$file", $fullfile))
6846 {
6847 $suppress = 0;
6848 $trailer = "; error while making link: $!";
6849 }
6850 }
6851 elsif (system ('cp', "$libdir/$file", $fullfile))
6852 {
6853 $suppress = 0;
6854 $trailer = "\n error while copying";
6855 }
6856 }
6858 if (! maybe_push_required_file (dirname ($fullfile),
6859 $file, $fullfile))
6860 {
6861 if (! $found_it && ! $automake_will_process_aux_dir)
6862 {
6863 # We have added the file but could not push it
6864 # into DIST_COMMON, probably because this is
6865 # an auxiliary file and we are not processing
6866 # the top level Makefile. Furthermore Automake
6867 # hasn't been asked to create the Makefile.in
6868 # that distribute the aux dir files.
6869 error ($where, 'Please make a full run of automake'
6870 . " so $fullfile gets distributed.");
6871 }
6872 }
6873 }
6875 # If --force-missing was specified, and we have
6876 # actually found the file, then do nothing.
6877 next
6878 if $found_it && $force_missing;
6880 # If we couldn' install the file, but it is a target in
6881 # the Makefile, don't print anything. This allows files
6882 # like README, AUTHORS, or THANKS to be generated.
6883 next
6884 if !$suppress && rule $file;
6886 msg ($suppress ? 'note' : 'error', $where, "$message$trailer");
6887 }
6888 }
6889 }
6890 }
6892 # &require_file ($WHERE, $MYSTRICT, @FILES)
6893 # -----------------------------------------
6894 sub require_file ($$@)
6895 {
6896 my ($where, $mystrict, @files) = @_;
6897 require_file_internal ($where, $mystrict, $relative_dir, @files);
6898 }
6900 # &require_file_with_macro ($COND, $MACRO, $MYSTRICT, @FILES)
6901 # -----------------------------------------------------------
6902 sub require_file_with_macro ($$$@)
6903 {
6904 my ($cond, $macro, $mystrict, @files) = @_;
6905 $macro = rvar ($macro) unless ref $macro;
6906 require_file ($macro->rdef ($cond)->location, $mystrict, @files);
6907 }
6910 # &require_conf_file ($WHERE, $MYSTRICT, @FILES)
6911 # ----------------------------------------------
6912 # Looks in configuration path, as specified by AC_CONFIG_AUX_DIR.
6913 sub require_conf_file ($$@)
6914 {
6915 my ($where, $mystrict, @files) = @_;
6916 require_file_internal ($where, $mystrict, $config_aux_dir, @files);
6917 }
6920 # &require_conf_file_with_macro ($COND, $MACRO, $MYSTRICT, @FILES)
6921 # ----------------------------------------------------------------
6922 sub require_conf_file_with_macro ($$$@)
6923 {
6924 my ($cond, $macro, $mystrict, @files) = @_;
6925 require_conf_file (rvar ($macro)->rdef ($cond)->location,
6926 $mystrict, @files);
6927 }
6929 ################################################################
6931 # &require_build_directory ($DIRECTORY)
6932 # ------------------------------------
6933 # Emit rules to create $DIRECTORY if needed, and return
6934 # the file that any target requiring this directory should be made
6935 # dependent upon.
6936 sub require_build_directory ($)
6937 {
6938 my $directory = shift;
6939 my $dirstamp = "$directory/\$(am__dirstamp)";
6941 # Don't emit the rule twice.
6942 if (! defined $directory_map{$directory})
6943 {
6944 $directory_map{$directory} = 1;
6946 # Set a variable for the dirstamp basename.
6947 define_pretty_variable ('am__dirstamp', TRUE, INTERNAL,
6948 '$(am__leading_dot)dirstamp');
6950 # Directory must be removed by `make distclean'.
6951 $clean_files{$dirstamp} = DIST_CLEAN;
6953 $output_rules .= ("$dirstamp:\n"
6954 . "\t\@\$(mkdir_p) $directory\n"
6955 . "\t\@: > $dirstamp\n");
6956 }
6958 return $dirstamp;
6959 }
6961 # &require_build_directory_maybe ($FILE)
6962 # --------------------------------------
6963 # If $FILE lies in a subdirectory, emit a rule to create this
6964 # directory and return the file that $FILE should be made
6965 # dependent upon. Otherwise, just return the empty string.
6966 sub require_build_directory_maybe ($)
6967 {
6968 my $file = shift;
6969 my $directory = dirname ($file);
6971 if ($directory ne '.')
6972 {
6973 return require_build_directory ($directory);
6974 }
6975 else
6976 {
6977 return '';
6978 }
6979 }
6981 ################################################################
6983 # Push a list of files onto dist_common.
6984 sub push_dist_common
6985 {
6986 prog_error "push_dist_common run after handle_dist"
6987 if $handle_dist_run;
6988 Automake::Variable::define ('DIST_COMMON', VAR_AUTOMAKE, '+', TRUE, "@_",
6989 '', INTERNAL, VAR_PRETTY);
6990 }
6993 ################################################################
6995 # generate_makefile ($MAKEFILE_AM, $MAKEFILE_IN)
6996 # ----------------------------------------------
6997 # Generate a Makefile.in given the name of the corresponding Makefile and
6998 # the name of the file output by config.status.
6999 sub generate_makefile ($$)
7000 {
7001 my ($makefile_am, $makefile_in) = @_;
7003 # Reset all the Makefile.am related variables.
7004 initialize_per_input;
7006 # AUTOMAKE_OPTIONS can contains -W flags to disable or enable
7007 # warnings for this file. So hold any warning issued before
7008 # we have processed AUTOMAKE_OPTIONS.
7009 buffer_messages ('warning');
7011 # Name of input file ("Makefile.am") and output file
7012 # ("Makefile.in"). These have no directory components.
7013 $am_file_name = basename ($makefile_am);
7014 $in_file_name = basename ($makefile_in);
7016 # $OUTPUT is encoded. If it contains a ":" then the first element
7017 # is the real output file, and all remaining elements are input
7018 # files. We don't scan or otherwise deal with these input files,
7019 # other than to mark them as dependencies. See
7020 # &scan_autoconf_files for details.
7021 my ($makefile, @inputs) = split (/:/, $output_files{$makefile_in});
7023 $relative_dir = dirname ($makefile);
7024 $am_relative_dir = dirname ($makefile_am);
7026 read_main_am_file ($makefile_am);
7027 if (handle_options)
7028 {
7029 # Process buffered warnings.
7030 flush_messages;
7031 # Fatal error. Just return, so we can continue with next file.
7032 return;
7033 }
7034 # Process buffered warnings.
7035 flush_messages;
7037 # There are a few install-related variables that you should not define.
7038 foreach my $var ('PRE_INSTALL', 'POST_INSTALL', 'NORMAL_INSTALL')
7039 {
7040 my $v = var $var;
7041 if ($v)
7042 {
7043 my $def = $v->def (TRUE);
7044 prog_error "$var not defined in condition TRUE"
7045 unless $def;
7046 reject_var $var, "`$var' should not be defined"
7047 if $def->owner != VAR_AUTOMAKE;
7048 }
7049 }
7051 # Catch some obsolete variables.
7052 msg_var ('obsolete', 'INCLUDES',
7053 "`INCLUDES' is the old name for `AM_CPPFLAGS' (or `*_CPPFLAGS')")
7054 if var ('INCLUDES');
7056 # At the toplevel directory, we might need config.guess, config.sub
7057 # or libtool scripts (ltconfig and ltmain.sh).
7058 if ($relative_dir eq '.')
7059 {
7060 # AC_CANONICAL_HOST and AC_CANONICAL_SYSTEM need config.guess and
7061 # config.sub.
7062 require_conf_file ($canonical_location, FOREIGN,
7063 'config.guess', 'config.sub')
7064 if $seen_canonical;
7065 }
7067 # Must do this after reading .am file.
7068 define_variable ('subdir', $relative_dir, INTERNAL);
7070 # If DIST_SUBDIRS is defined, make sure SUBDIRS is, so that
7071 # recursive rules are enabled.
7072 define_pretty_variable ('SUBDIRS', TRUE, INTERNAL, '')
7073 if var 'DIST_SUBDIRS' && ! var 'SUBDIRS';
7075 # Check first, because we might modify some state.
7076 check_cygnus;
7077 check_gnu_standards;
7078 check_gnits_standards;
7080 handle_configure ($makefile_am, $makefile_in, $makefile, @inputs);
7081 handle_gettext;
7082 handle_libraries;
7083 handle_ltlibraries;
7084 handle_programs;
7085 handle_scripts;
7087 # These must be run after all the sources are scanned. They
7088 # use variables defined by &handle_libraries, &handle_ltlibraries,
7089 # or &handle_programs.
7090 handle_compile;
7091 handle_languages;
7092 handle_libtool;
7094 # Variables used by distdir.am and tags.am.
7095 define_pretty_variable ('SOURCES', TRUE, INTERNAL, @sources);
7096 if (! option 'no-dist')
7097 {
7098 define_pretty_variable ('DIST_SOURCES', TRUE, INTERNAL, @dist_sources);
7099 }
7101 handle_multilib;
7102 handle_texinfo;
7103 handle_emacs_lisp;
7104 handle_python;
7105 handle_java;
7106 handle_man_pages;
7107 handle_data;
7108 handle_headers;
7109 handle_subdirs;
7110 handle_tags;
7111 handle_minor_options;
7112 handle_tests;
7114 # This must come after most other rules.
7115 handle_dist;
7117 handle_footer;
7118 do_check_merge_target;
7119 handle_all ($makefile);
7121 # FIXME: Gross!
7122 if (var ('lib_LTLIBRARIES') && var ('bin_PROGRAMS'))
7123 {
7124 $output_rules .= "install-binPROGRAMS: install-libLTLIBRARIES\n\n";
7125 }
7127 handle_install;
7128 handle_clean ($makefile);
7129 handle_factored_dependencies;
7131 # Comes last, because all the above procedures may have
7132 # defined or overridden variables.
7133 $output_vars .= output_variables;
7135 check_typos;
7137 my ($out_file) = $output_directory . '/' . $makefile_in;
7139 if ($exit_code != 0)
7140 {
7141 verb "not writing $out_file because of earlier errors";
7142 return;
7143 }
7145 if (! -d ($output_directory . '/' . $am_relative_dir))
7146 {
7147 mkdir ($output_directory . '/' . $am_relative_dir, 0755);
7148 }
7150 # We make sure that `all:' is the first target.
7151 my $output =
7152 "$output_vars$output_all$output_header$output_rules$output_trailer";
7154 # Decide whether we must update the output file or not.
7155 # We have to update in the following situations.
7156 # * $force_generation is set.
7157 # * any of the output dependencies is younger than the output
7158 # * the contents of the output is different (this can happen
7159 # if the project has been populated with a file listed in
7160 # @common_files since the last run).
7161 # Output's dependencies are split in two sets:
7162 # * dependencies which are also configure dependencies
7163 # These do not change between each Makefile.am
7164 # * other dependencies, specific to the Makefile.am being processed
7165 # (such as the Makefile.am itself, or any Makefile fragment
7166 # it includes).
7167 my $timestamp = mtime $out_file;
7168 if (! $force_generation
7169 && $configure_deps_greatest_timestamp < $timestamp
7170 && $output_deps_greatest_timestamp < $timestamp
7171 && $output eq contents ($out_file))
7172 {
7173 verb "$out_file unchanged";
7174 # No need to update.
7175 return;
7176 }
7178 if (-e $out_file)
7179 {
7180 unlink ($out_file)
7181 or fatal "cannot remove $out_file: $!\n";
7182 }
7184 my $gm_file = new Automake::XFile "> $out_file";
7185 verb "creating $out_file";
7186 print $gm_file $output;
7187 }
7189 ################################################################
7194 ################################################################
7196 # Print usage information.
7197 sub usage ()
7198 {
7199 print "Usage: $0 [OPTION] ... [Makefile]...
7201 Generate Makefile.in for configure from Makefile.am.
7203 Operation modes:
7204 --help print this help, then exit
7205 --version print version number, then exit
7206 -v, --verbose verbosely list files processed
7207 --no-force only update Makefile.in's that are out of date
7208 -W, --warnings=CATEGORY report the warnings falling in CATEGORY
7210 Dependency tracking:
7211 -i, --ignore-deps disable dependency tracking code
7212 --include-deps enable dependency tracking code
7214 Flavors:
7215 --cygnus assume program is part of Cygnus-style tree
7216 --foreign set strictness to foreign
7217 --gnits set strictness to gnits
7218 --gnu set strictness to gnu
7220 Library files:
7221 -a, --add-missing add missing standard files to package
7222 --libdir=DIR directory storing library files
7223 -c, --copy with -a, copy missing files (default is symlink)
7224 -f, --force-missing force update of standard files
7226 ";
7227 Automake::ChannelDefs::usage;
7229 my ($last, @lcomm);
7230 $last = '';
7231 foreach my $iter (sort ((@common_files, @common_sometimes)))
7232 {
7233 push (@lcomm, $iter) unless $iter eq $last;
7234 $last = $iter;
7235 }
7237 my @four;
7238 print "\nFiles which are automatically distributed, if found:\n";
7239 format USAGE_FORMAT =
7240 @<<<<<<<<<<<<<<<< @<<<<<<<<<<<<<<<< @<<<<<<<<<<<<<<<< @<<<<<<<<<<<<<<<<
7241 $four[0], $four[1], $four[2], $four[3]
7242 .
7243 $~ = "USAGE_FORMAT";
7245 my $cols = 4;
7246 my $rows = int(@lcomm / $cols);
7247 my $rest = @lcomm % $cols;
7249 if ($rest)
7250 {
7251 $rows++;
7252 }
7253 else
7254 {
7255 $rest = $cols;
7256 }
7258 for (my $y = 0; $y < $rows; $y++)
7259 {
7260 @four = ("", "", "", "");
7261 for (my $x = 0; $x < $cols; $x++)
7262 {
7263 last if $y + 1 == $rows && $x == $rest;
7265 my $idx = (($x > $rest)
7266 ? ($rows * $rest + ($rows - 1) * ($x - $rest))
7267 : ($rows * $x));
7269 $idx += $y;
7270 $four[$x] = $lcomm[$idx];
7271 }
7272 write;
7273 }
7275 print "\nReport bugs to <bug-automake\@gnu.org>.\n";
7277 # --help always returns 0 per GNU standards.
7278 exit 0;
7279 }
7282 # &version ()
7283 # -----------
7284 # Print version information
7285 sub version ()
7286 {
7287 print <<EOF;
7288 automake (GNU $PACKAGE) $VERSION
7289 Written by Tom Tromey <tromey\@redhat.com>.
7291 Copyright 2004 Free Software Foundation, Inc.
7292 This is free software; see the source for copying conditions. There is NO
7293 warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
7294 EOF
7295 # --version always returns 0 per GNU standards.
7296 exit 0;
7297 }
7299 ################################################################
7301 # Parse command line.
7302 sub parse_arguments ()
7303 {
7304 # Start off as gnu.
7305 set_strictness ('gnu');
7307 my $cli_where = new Automake::Location;
7308 my %cli_options =
7309 (
7310 'libdir:s' => \$libdir,
7311 'gnu' => sub { set_strictness ('gnu'); },
7312 'gnits' => sub { set_strictness ('gnits'); },
7313 'cygnus' => sub { set_global_option ('cygnus', $cli_where); },
7314 'foreign' => sub { set_strictness ('foreign'); },
7315 'include-deps' => sub { unset_global_option ('no-dependencies'); },
7316 'i|ignore-deps' => sub { set_global_option ('no-dependencies',
7317 $cli_where); },
7318 'no-force' => sub { $force_generation = 0; },
7319 'f|force-missing' => \$force_missing,
7320 'o|output-dir:s' => \$output_directory,
7321 'a|add-missing' => \$add_missing,
7322 'c|copy' => \$copy_missing,
7323 'v|verbose' => sub { setup_channel 'verb', silent => 0; },
7324 'W|warnings:s' => \&parse_warnings,
7325 # These long options (--Werror and --Wno-error) for backward
7326 # compatibility. Use -Werror and -Wno-error today.
7327 'Werror' => sub { parse_warnings 'W', 'error'; },
7328 'Wno-error' => sub { parse_warnings 'W', 'no-error'; },
7329 );
7330 use Getopt::Long;
7331 Getopt::Long::config ("bundling", "pass_through");
7333 # See if --version or --help is used. We want to process these before
7334 # anything else because the GNU Coding Standards require us to
7335 # `exit 0' after processing these options, and we can't guarantee this
7336 # if we treat other options first. (Handling other options first
7337 # could produce error diagnostics, and in this condition it is
7338 # confusing if Automake does `exit 0'.)
7339 my %cli_options_1st_pass =
7340 (
7341 'version' => \&version,
7342 'help' => \&usage,
7343 # Recognize all other options (and their arguments) but do nothing.
7344 map { $_ => sub {} } (keys %cli_options)
7345 );
7346 my @ARGV_backup = @ARGV;
7347 Getopt::Long::GetOptions %cli_options_1st_pass
7348 or exit 1;
7349 @ARGV = @ARGV_backup;
7351 # Now *really* process the options. This time we know
7352 # that --help and --version are not present.
7353 Getopt::Long::GetOptions %cli_options
7354 or exit 1;
7356 if (defined $output_directory)
7357 {
7358 msg 'obsolete', "`--output-dir' is deprecated\n";
7359 }
7360 else
7361 {
7362 # In the next release we'll remove this entirely.
7363 $output_directory = '.';
7364 }
7366 my $errspec = 0;
7367 foreach my $arg (@ARGV)
7368 {
7369 if ($arg =~ /^-./)
7370 {
7371 fatal ("unrecognized option `$arg'\n"
7372 . "Try `$0 --help' for more information.");
7373 }
7375 # Handle $local:$input syntax.
7376 my ($local, @rest) = split (/:/, $arg);
7377 @rest = ("$local.in",) unless @rest;
7378 my $input = locate_am @rest;
7379 if ($input)
7380 {
7381 push @input_files, $input;
7382 $output_files{$input} = join (':', ($local, @rest));
7383 }
7384 else
7385 {
7386 error "no Automake input file found for `$arg'";
7387 $errspec = 1;
7388 }
7389 }
7390 fatal "no input file found among supplied arguments"
7391 if $errspec && ! @input_files;
7392 }
7394 ################################################################
7396 # Parse the WARNINGS environment variable.
7397 parse_WARNINGS;
7399 # Parse command line.
7400 parse_arguments;
7402 $configure_ac = require_configure_ac;
7404 # Do configure.ac scan only once.
7405 scan_autoconf_files;
7407 if (! @input_files)
7408 {
7409 my $msg = '';
7410 $msg = "\nDid you forget AC_CONFIG_FILES([Makefile]) in $configure_ac?"
7411 if -f 'Makefile.am';
7412 fatal ("no `Makefile.am' found for any configure output$msg");
7413 }
7415 # Now do all the work on each file.
7416 foreach my $file (@input_files)
7417 {
7418 ($am_file = $file) =~ s/\.in$//;
7419 if (! -f ($am_file . '.am'))
7420 {
7421 error "`$am_file.am' does not exist";
7422 }
7423 else
7424 {
7425 # Any warning setting now local to this Makefile.am.
7426 dup_channel_setup;
7428 generate_makefile ($am_file . '.am', $file);
7430 # Back out any warning setting.
7431 drop_channel_setup;
7432 }
7433 }
7435 exit $exit_code;
7438 ### Setup "GNU" style for perl-mode and cperl-mode.
7439 ## Local Variables:
7440 ## perl-indent-level: 2
7441 ## perl-continued-statement-offset: 2
7442 ## perl-continued-brace-offset: 0
7443 ## perl-brace-offset: 0
7444 ## perl-brace-imaginary-offset: 0
7445 ## perl-label-offset: -2
7446 ## cperl-indent-level: 2
7447 ## cperl-brace-offset: 0
7448 ## cperl-continued-brace-offset: 0
7449 ## cperl-label-offset: -2
7450 ## cperl-extra-newline-before-brace: t
7451 ## cperl-merge-trailing-else: nil
7452 ## cperl-continued-statement-offset: 2
7453 ## End: