| blob | 95bc7a38ae4da1c05225ac6bf6022d39bc1126a3 |
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, $full, %transform);
1728 }
1730 if ($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 DIST_SOURCE => ($prefix !~ /^nodist_/),
1906 %transform);
1907 }
1908 if ($needlinker)
1909 {
1910 $linker ||= &resolve_linker (%linkers_used);
1911 }
1913 my @keys = sort keys %used_pfx;
1914 if (scalar @keys == 0)
1915 {
1916 # The default source for libfoo.la is libfoo.c, but for
1917 # backward compatibility we first look at libfoo_la.c
1918 my $old_default_source = "$one_file.c";
1919 (my $default_source = $unxformed) =~ s,(\.[^./\\]*)?$,.c,;
1920 if ($old_default_source ne $default_source
1921 && (rule $old_default_source
1922 || rule '$(srcdir)/' . $old_default_source
1923 || rule '${srcdir}/' . $old_default_source
1924 || -f $old_default_source))
1925 {
1926 my $loc = $where->clone;
1927 $loc->pop_context;
1928 msg ('obsolete', $loc,
1929 "the default source for `$unxformed' has been changed "
1930 . "to `$default_source'.\n(Using `$old_default_source' for "
1931 . "backward compatibility.)");
1932 $default_source = $old_default_source;
1933 }
1934 # If a rule exists to build this source with a $(srcdir)
1935 # prefix, use that prefix in our variables too. This is for
1936 # the sake of BSD Make.
1937 if (rule '$(srcdir)/' . $default_source
1938 || rule '${srcdir}/' . $default_source)
1939 {
1940 $default_source = '$(srcdir)/' . $default_source;
1941 }
1943 &define_variable ($one_file . "_SOURCES", $default_source, $where);
1944 push (@sources, $default_source);
1945 push (@dist_sources, $default_source);
1947 %linkers_used = ();
1948 my (@result) =
1949 handle_single_transform ($one_file . '_SOURCES',
1950 $one_file . '_SOURCES',
1951 $one_file, $obj,
1952 $default_source, %transform);
1953 $linker ||= &resolve_linker (%linkers_used);
1954 define_pretty_variable ($one_file . '_OBJECTS', TRUE, $where, @result);
1955 }
1956 else
1957 {
1958 @keys = map { '$(' . $_ . $one_file . '_OBJECTS)' } @keys;
1959 define_pretty_variable ($one_file . '_OBJECTS', TRUE, $where, @keys);
1960 }
1962 # If we want to use `LINK' we must make sure it is defined.
1963 if ($linker eq '')
1964 {
1965 $need_link = 1;
1966 }
1968 return $linker;
1969 }
1972 # handle_lib_objects ($XNAME, $VAR)
1973 # ---------------------------------
1974 # Special-case ALLOCA and LIBOBJS substitutions in _LDADD or _LIBADD variables.
1975 # Also, generate _DEPENDENCIES variable if appropriate.
1976 # Arguments are:
1977 # transformed name of object being built, or empty string if no object
1978 # name of _LDADD/_LIBADD-type variable to examine
1979 # Returns 1 if LIBOBJS seen, 0 otherwise.
1980 sub handle_lib_objects
1981 {
1982 my ($xname, $varname) = @_;
1984 my $var = var ($varname);
1985 prog_error "handle_lib_objects: `$varname' undefined"
1986 unless $var;
1987 prog_error "handle_lib_objects: unexpected variable name `$varname'"
1988 unless $varname =~ /^(.*)(?:LIB|LD)ADD$/;
1989 my $prefix = $1 || 'AM_';
1991 my $seen_libobjs = 0;
1992 my $flagvar = 0;
1994 transform_variable_recursively
1995 ($varname, $xname . '_DEPENDENCIES', 'am__DEPENDENCIES',
1996 ! $xname, INTERNAL,
1997 # Transformation function, run on each filename.
1998 sub {
1999 my ($subvar, $val, $cond, $full_cond) = @_;
2001 if ($val =~ /^-/)
2002 {
2003 # Skip -lfoo and -Ldir silently; these are explicitly allowed.
2004 if ($val !~ /^-[lL]/ &&
2005 # Skip -dlopen and -dlpreopen; these are explicitly allowed
2006 # for Libtool libraries or programs. (Actually we are a bit
2007 # laxest here since this code also applies to non-libtool
2008 # libraries or programs, for which -dlopen and -dlopreopen
2009 # are pure non-sence. Diagnosting this doesn't seems very
2010 # important: the developer will quickly get complaints from
2011 # the linker.)
2012 $val !~ /^-dl(?:pre)?open$/ &&
2013 # Only get this error once.
2014 ! $flagvar)
2015 {
2016 $flagvar = 1;
2017 # FIXME: should display a stack of nested variables
2018 # as context when $var != $subvar.
2019 err_var ($var, "linker flags such as `$val' belong in "
2020 . "`${prefix}LDFLAGS");
2021 }
2022 return ();
2023 }
2024 elsif ($val !~ /^\@.*\@$/)
2025 {
2026 # Assume we have a file of some sort, and output it into the
2027 # dependency variable. Autoconf substitutions are not output;
2028 # rarely is a new dependency substituted into e.g. foo_LDADD
2029 # -- but bad things (e.g. -lX11) are routinely substituted.
2030 # Note that LIBOBJS and ALLOCA are exceptions to this rule,
2031 # and handled specially below.
2032 return $val;
2033 }
2034 elsif ($val =~ /^\@(LT)?LIBOBJS\@$/)
2035 {
2036 handle_LIBOBJS ($subvar, $cond, $1);
2037 $seen_libobjs = 1;
2038 return $val;
2039 }
2040 elsif ($val =~ /^\@(LT)?ALLOCA\@$/)
2041 {
2042 handle_ALLOCA ($subvar, $cond, $1);
2043 return $val;
2044 }
2045 else
2046 {
2047 return ();
2048 }
2049 });
2051 return $seen_libobjs;
2052 }
2054 sub handle_LIBOBJS ($$$)
2055 {
2056 my ($var, $cond, $lt) = @_;
2057 $lt ||= '';
2058 my $myobjext = ($1 ? 'l' : '') . 'o';
2060 $var->requires_variables ("\@${lt}LIBOBJS\@ used", $lt . 'LIBOBJS')
2061 if ! keys %libsources;
2063 foreach my $iter (keys %libsources)
2064 {
2065 if ($iter =~ /\.[cly]$/)
2066 {
2067 &saw_extension ($&);
2068 &saw_extension ('.c');
2069 }
2071 if ($iter =~ /\.h$/)
2072 {
2073 require_file_with_macro ($cond, $var, FOREIGN, $iter);
2074 }
2075 elsif ($iter ne 'alloca.c')
2076 {
2077 my $rewrite = $iter;
2078 $rewrite =~ s/\.c$/.P$myobjext/;
2079 $dep_files{'$(DEPDIR)/' . $rewrite} = 1;
2080 $rewrite = "^" . quotemeta ($iter) . "\$";
2081 # Only require the file if it is not a built source.
2082 my $bs = var ('BUILT_SOURCES');
2083 if (! $bs || ! grep (/$rewrite/, $bs->value_as_list_recursive))
2084 {
2085 require_file_with_macro ($cond, $var, FOREIGN, $iter);
2086 }
2087 }
2088 }
2089 }
2091 sub handle_ALLOCA ($$$)
2092 {
2093 my ($var, $cond, $lt) = @_;
2094 my $myobjext = ($lt ? 'l' : '') . 'o';
2095 $lt ||= '';
2096 $var->requires_variables ("\@${lt}ALLOCA\@ used", $lt . 'ALLOCA');
2097 $dep_files{'$(DEPDIR)/alloca.P' . $myobjext} = 1;
2098 require_file_with_macro ($cond, $var, FOREIGN, 'alloca.c');
2099 &saw_extension ('c');
2100 }
2102 # Canonicalize the input parameter
2103 sub canonicalize
2104 {
2105 my ($string) = @_;
2106 $string =~ tr/A-Za-z0-9_\@/_/c;
2107 return $string;
2108 }
2110 # Canonicalize a name, and check to make sure the non-canonical name
2111 # is never used. Returns canonical name. Arguments are name and a
2112 # list of suffixes to check for.
2113 sub check_canonical_spelling
2114 {
2115 my ($name, @suffixes) = @_;
2117 my $xname = &canonicalize ($name);
2118 if ($xname ne $name)
2119 {
2120 foreach my $xt (@suffixes)
2121 {
2122 reject_var ("$name$xt", "use `$xname$xt', not `$name$xt'");
2123 }
2124 }
2126 return $xname;
2127 }
2130 # handle_compile ()
2131 # -----------------
2132 # Set up the compile suite.
2133 sub handle_compile ()
2134 {
2135 return
2136 unless $get_object_extension_was_run;
2138 # Boilerplate.
2139 my $default_includes = '';
2140 if (! option 'nostdinc')
2141 {
2142 $default_includes = ' -I. -I$(srcdir)';
2144 my $var = var 'CONFIG_HEADER';
2145 if ($var)
2146 {
2147 foreach my $hdr (split (' ', $var->variable_value))
2148 {
2149 $default_includes .= ' -I' . dirname ($hdr);
2150 }
2151 }
2152 }
2154 my (@mostly_rms, @dist_rms);
2155 foreach my $item (sort keys %compile_clean_files)
2156 {
2157 if ($compile_clean_files{$item} == MOSTLY_CLEAN)
2158 {
2159 push (@mostly_rms, "\t-rm -f $item");
2160 }
2161 elsif ($compile_clean_files{$item} == DIST_CLEAN)
2162 {
2163 push (@dist_rms, "\t-rm -f $item");
2164 }
2165 else
2166 {
2167 prog_error 'invalid entry in %compile_clean_files';
2168 }
2169 }
2171 my ($coms, $vars, $rules) =
2172 &file_contents_internal (1, "$libdir/am/compile.am",
2173 new Automake::Location,
2174 ('DEFAULT_INCLUDES' => $default_includes,
2175 'MOSTLYRMS' => join ("\n", @mostly_rms),
2176 'DISTRMS' => join ("\n", @dist_rms)));
2177 $output_vars .= $vars;
2178 $output_rules .= "$coms$rules";
2180 # Check for automatic de-ANSI-fication.
2181 if (option 'ansi2knr')
2182 {
2183 my ($ansi2knr_filename, $ansi2knr_where) = @{option 'ansi2knr'};
2184 my $ansi2knr_dir = '';
2186 require_variables ($ansi2knr_where, "option `ansi2knr' is used",
2187 TRUE, "ANSI2KNR", "U");
2189 # topdir is where ansi2knr should be.
2190 if ($ansi2knr_filename eq 'ansi2knr')
2191 {
2192 # Only require ansi2knr files if they should appear in
2193 # this directory.
2194 require_file ($ansi2knr_where, FOREIGN,
2195 'ansi2knr.c', 'ansi2knr.1');
2197 # ansi2knr needs to be built before subdirs, so unshift it.
2198 unshift (@all, '$(ANSI2KNR)');
2199 }
2200 else
2201 {
2202 $ansi2knr_dir = dirname ($ansi2knr_filename);
2203 }
2205 $output_rules .= &file_contents ('ansi2knr',
2206 new Automake::Location,
2207 'ANSI2KNR-DIR' => $ansi2knr_dir);
2209 }
2210 }
2212 # handle_libtool ()
2213 # -----------------
2214 # Handle libtool rules.
2215 sub handle_libtool
2216 {
2217 return unless var ('LIBTOOL');
2219 # Libtool requires some files, but only at top level.
2220 require_conf_file_with_macro (TRUE, 'LIBTOOL', FOREIGN, @libtool_files)
2221 if $relative_dir eq '.';
2223 my @libtool_rms;
2224 foreach my $item (sort keys %libtool_clean_directories)
2225 {
2226 my $dir = ($item eq '.') ? '' : "$item/";
2227 # .libs is for Unix, _libs for DOS.
2228 push (@libtool_rms, "\t-rm -rf ${dir}.libs ${dir}_libs");
2229 }
2231 # Output the libtool compilation rules.
2232 $output_rules .= &file_contents ('libtool',
2233 new Automake::Location,
2234 LTRMS => join ("\n", @libtool_rms));
2235 }
2237 # handle_programs ()
2238 # ------------------
2239 # Handle C programs.
2240 sub handle_programs
2241 {
2242 my @proglist = &am_install_var ('progs', 'PROGRAMS',
2243 'bin', 'sbin', 'libexec', 'pkglib',
2244 'noinst', 'check');
2245 return if ! @proglist;
2247 my $seen_global_libobjs =
2248 var ('LDADD') && &handle_lib_objects ('', 'LDADD');
2250 foreach my $pair (@proglist)
2251 {
2252 my ($where, $one_file) = @$pair;
2254 my $seen_libobjs = 0;
2255 my $obj = &get_object_extension ($one_file);
2257 # Strip any $(EXEEXT) suffix the user might have added, or this
2258 # will confuse &handle_source_transform and &check_canonical_spelling.
2259 # We'll add $(EXEEXT) back later anyway.
2260 $one_file =~ s/\$\(EXEEXT\)$//;
2262 # Canonicalize names and check for misspellings.
2263 my $xname = &check_canonical_spelling ($one_file, '_LDADD', '_LDFLAGS',
2264 '_SOURCES', '_OBJECTS',
2265 '_DEPENDENCIES');
2267 $where->push_context ("while processing program `$one_file'");
2268 $where->set (INTERNAL->get);
2270 my $linker = &handle_source_transform ($xname, $one_file, $obj, $where,
2271 NONLIBTOOL => 1, LIBTOOL => 0);
2273 if (var ($xname . "_LDADD"))
2274 {
2275 $seen_libobjs = &handle_lib_objects ($xname, $xname . '_LDADD');
2276 }
2277 else
2278 {
2279 # User didn't define prog_LDADD override. So do it.
2280 &define_variable ($xname . '_LDADD', '$(LDADD)', $where);
2282 # This does a bit too much work. But we need it to
2283 # generate _DEPENDENCIES when appropriate.
2284 if (var ('LDADD'))
2285 {
2286 $seen_libobjs = &handle_lib_objects ($xname, 'LDADD');
2287 }
2288 }
2290 reject_var ($xname . '_LIBADD',
2291 "use `${xname}_LDADD', not `${xname}_LIBADD'");
2293 set_seen ($xname . '_DEPENDENCIES');
2294 set_seen ($xname . '_LDFLAGS');
2296 # Determine program to use for link.
2297 my $xlink;
2298 if (var ($xname . '_LINK'))
2299 {
2300 $xlink = $xname . '_LINK';
2301 }
2302 else
2303 {
2304 $xlink = $linker ? $linker : 'LINK';
2305 }
2307 # If the resulting program lies into a subdirectory,
2308 # make sure this directory will exist.
2309 my $dirstamp = require_build_directory_maybe ($one_file);
2311 $output_rules .= &file_contents ('program',
2312 $where,
2313 PROGRAM => $one_file,
2314 XPROGRAM => $xname,
2315 XLINK => $xlink,
2316 DIRSTAMP => $dirstamp,
2317 EXEEXT => '$(EXEEXT)');
2319 if ($seen_libobjs || $seen_global_libobjs)
2320 {
2321 if (var ($xname . '_LDADD'))
2322 {
2323 &check_libobjs_sources ($xname, $xname . '_LDADD');
2324 }
2325 elsif (var ('LDADD'))
2326 {
2327 &check_libobjs_sources ($xname, 'LDADD');
2328 }
2329 }
2330 }
2331 }
2334 # handle_libraries ()
2335 # -------------------
2336 # Handle libraries.
2337 sub handle_libraries
2338 {
2339 my @liblist = &am_install_var ('libs', 'LIBRARIES',
2340 'lib', 'pkglib', 'noinst', 'check');
2341 return if ! @liblist;
2343 my @prefix = am_primary_prefixes ('LIBRARIES', 0, 'lib', 'pkglib',
2344 'noinst', 'check');
2346 if (@prefix)
2347 {
2348 my $var = rvar ($prefix[0] . '_LIBRARIES');
2349 $var->requires_variables ('library used', 'RANLIB');
2350 }
2352 &define_variable ('AR', 'ar', INTERNAL);
2353 &define_variable ('ARFLAGS', 'cru', INTERNAL);
2355 foreach my $pair (@liblist)
2356 {
2357 my ($where, $onelib) = @$pair;
2359 my $seen_libobjs = 0;
2360 # Check that the library fits the standard naming convention.
2361 my $bn = basename ($onelib);
2362 if ($bn !~ /^lib.*\.a$/)
2363 {
2364 $bn =~ s/^(?:lib)?(.*?)(?:\.[^.]*)?$/lib$1.a/;
2365 my $suggestion = dirname ($onelib) . "/$bn";
2366 $suggestion =~ s|^\./||g;
2367 msg ('error-gnu/warn', $where,
2368 "`$onelib' is not a standard library name\n"
2369 . "did you mean `$suggestion'?")
2370 }
2372 $where->push_context ("while processing library `$onelib'");
2373 $where->set (INTERNAL->get);
2375 my $obj = &get_object_extension ($onelib);
2377 # Canonicalize names and check for misspellings.
2378 my $xlib = &check_canonical_spelling ($onelib, '_LIBADD', '_SOURCES',
2379 '_OBJECTS', '_DEPENDENCIES',
2380 '_AR');
2382 if (! var ($xlib . '_AR'))
2383 {
2384 &define_variable ($xlib . '_AR', '$(AR) $(ARFLAGS)', $where);
2385 }
2387 # Generate support for conditional object inclusion in
2388 # libraries.
2389 if (var ($xlib . '_LIBADD'))
2390 {
2391 if (&handle_lib_objects ($xlib, $xlib . '_LIBADD'))
2392 {
2393 $seen_libobjs = 1;
2394 }
2395 }
2396 else
2397 {
2398 &define_variable ($xlib . "_LIBADD", '', $where);
2399 }
2401 reject_var ($xlib . '_LDADD',
2402 "use `${xlib}_LIBADD', not `${xlib}_LDADD'");
2404 # Make sure we at look at this.
2405 set_seen ($xlib . '_DEPENDENCIES');
2407 &handle_source_transform ($xlib, $onelib, $obj, $where,
2408 NONLIBTOOL => 1, LIBTOOL => 0);
2410 # If the resulting library lies into a subdirectory,
2411 # make sure this directory will exist.
2412 my $dirstamp = require_build_directory_maybe ($onelib);
2414 $output_rules .= &file_contents ('library',
2415 $where,
2416 LIBRARY => $onelib,
2417 XLIBRARY => $xlib,
2418 DIRSTAMP => $dirstamp);
2420 if ($seen_libobjs)
2421 {
2422 if (var ($xlib . '_LIBADD'))
2423 {
2424 &check_libobjs_sources ($xlib, $xlib . '_LIBADD');
2425 }
2426 }
2427 }
2428 }
2431 # handle_ltlibraries ()
2432 # ---------------------
2433 # Handle shared libraries.
2434 sub handle_ltlibraries
2435 {
2436 my @liblist = &am_install_var ('ltlib', 'LTLIBRARIES',
2437 'noinst', 'lib', 'pkglib', 'check');
2438 return if ! @liblist;
2440 my @prefix = am_primary_prefixes ('LTLIBRARIES', 0, 'lib', 'pkglib',
2441 'noinst', 'check');
2443 if (@prefix)
2444 {
2445 my $var = rvar ($prefix[0] . '_LTLIBRARIES');
2446 $var->requires_variables ('Libtool library used', 'LIBTOOL');
2447 }
2449 my %instdirs = ();
2450 my %instconds = ();
2451 my %liblocations = (); # Location (in Makefile.am) of each library.
2453 foreach my $key (@prefix)
2454 {
2455 # Get the installation directory of each library.
2456 (my $dir = $key) =~ s/^nobase_//;
2457 my $var = rvar ($key . '_LTLIBRARIES');
2459 # We reject libraries which are installed in several places
2460 # in the same condition, because we can only specify one
2461 # `-rpath' option.
2462 $var->traverse_recursively
2463 (sub
2464 {
2465 my ($var, $val, $cond, $full_cond) = @_;
2466 my $hcond = $full_cond->human;
2467 my $where = $var->rdef ($cond)->location;
2468 # A library cannot be installed in different directory
2469 # in overlapping conditions.
2470 if (exists $instconds{$val})
2471 {
2472 my ($msg, $acond) =
2473 $instconds{$val}->ambiguous_p ($val, $full_cond);
2475 if ($msg)
2476 {
2477 error ($where, $msg, partial => 1);
2479 my $dirtxt = "installed in `$dir'";
2480 $dirtxt = "built for `$dir'"
2481 if $dir eq 'EXTRA' || $dir eq 'noinst' || $dir eq 'check';
2482 my $dircond =
2483 $full_cond->true ? "" : " in condition $hcond";
2485 error ($where, "`$val' should be $dirtxt$dircond ...",
2486 partial => 1);
2488 my $hacond = $acond->human;
2489 my $adir = $instdirs{$val}{$acond};
2490 my $adirtxt = "installed in `$adir'";
2491 $adirtxt = "built for `$adir'"
2492 if ($adir eq 'EXTRA' || $adir eq 'noinst'
2493 || $adir eq 'check');
2494 my $adircond = $acond->true ? "" : " in condition $hacond";
2496 my $onlyone = ($dir ne $adir) ?
2497 ("\nLibtool libraries can be built for only one "
2498 . "destination.") : "";
2500 error ($liblocations{$val}{$acond},
2501 "... and should also be $adirtxt$adircond.$onlyone");
2502 return;
2503 }
2504 }
2505 else
2506 {
2507 $instconds{$val} = new Automake::DisjConditions;
2508 }
2509 $instdirs{$val}{$full_cond} = $dir;
2510 $liblocations{$val}{$full_cond} = $where;
2511 $instconds{$val} = $instconds{$val}->merge ($full_cond);
2512 },
2513 sub
2514 {
2515 return ();
2516 },
2517 skip_ac_subst => 1);
2518 }
2520 foreach my $pair (@liblist)
2521 {
2522 my ($where, $onelib) = @$pair;
2524 my $seen_libobjs = 0;
2525 my $obj = &get_object_extension ($onelib);
2527 # Canonicalize names and check for misspellings.
2528 my $xlib = &check_canonical_spelling ($onelib, '_LIBADD', '_LDFLAGS',
2529 '_SOURCES', '_OBJECTS',
2530 '_DEPENDENCIES');
2532 # Check that the library fits the standard naming convention.
2533 my $libname_rx = '^lib.*\.la';
2534 my $ldvar = var ("${xlib}_LDFLAGS") || var ('AM_LDFLAGS');
2535 my $ldvar2 = var ('LDFLAGS');
2536 if (($ldvar && grep (/-module/, $ldvar->value_as_list_recursive))
2537 || ($ldvar2 && grep (/-module/, $ldvar2->value_as_list_recursive)))
2538 {
2539 # Relax name checking for libtool modules.
2540 $libname_rx = '\.la';
2541 }
2543 my $bn = basename ($onelib);
2544 if ($bn !~ /$libname_rx$/)
2545 {
2546 my $type = 'library';
2547 if ($libname_rx eq '\.la')
2548 {
2549 $bn =~ s/^(lib|)(.*?)(?:\.[^.]*)?$/$1$2.la/;
2550 $type = 'module';
2551 }
2552 else
2553 {
2554 $bn =~ s/^(?:lib)?(.*?)(?:\.[^.]*)?$/lib$1.la/;
2555 }
2556 my $suggestion = dirname ($onelib) . "/$bn";
2557 $suggestion =~ s|^\./||g;
2558 msg ('error-gnu/warn', $where,
2559 "`$onelib' is not a standard libtool $type name\n"
2560 . "did you mean `$suggestion'?")
2561 }
2563 $where->push_context ("while processing Libtool library `$onelib'");
2564 $where->set (INTERNAL->get);
2566 # Make sure we look at these.
2567 set_seen ($xlib . '_LDFLAGS');
2568 set_seen ($xlib . '_DEPENDENCIES');
2570 # Generate support for conditional object inclusion in
2571 # libraries.
2572 if (var ($xlib . '_LIBADD'))
2573 {
2574 if (&handle_lib_objects ($xlib, $xlib . '_LIBADD'))
2575 {
2576 $seen_libobjs = 1;
2577 }
2578 }
2579 else
2580 {
2581 &define_variable ($xlib . "_LIBADD", '', $where);
2582 }
2584 reject_var ("${xlib}_LDADD",
2585 "use `${xlib}_LIBADD', not `${xlib}_LDADD'");
2588 my $linker = &handle_source_transform ($xlib, $onelib, $obj, $where,
2589 NONLIBTOOL => 0, LIBTOOL => 1);
2591 # Determine program to use for link.
2592 my $xlink;
2593 if (var ($xlib . '_LINK'))
2594 {
2595 $xlink = $xlib . '_LINK';
2596 }
2597 else
2598 {
2599 $xlink = $linker ? $linker : 'LINK';
2600 }
2602 my $rpathvar = "am_${xlib}_rpath";
2603 my $rpath = "\$($rpathvar)";
2604 foreach my $rcond ($instconds{$onelib}->conds)
2605 {
2606 my $val;
2607 if ($instdirs{$onelib}{$rcond} eq 'EXTRA'
2608 || $instdirs{$onelib}{$rcond} eq 'noinst'
2609 || $instdirs{$onelib}{$rcond} eq 'check')
2610 {
2611 # It's an EXTRA_ library, so we can't specify -rpath,
2612 # because we don't know where the library will end up.
2613 # The user probably knows, but generally speaking automake
2614 # doesn't -- and in fact configure could decide
2615 # dynamically between two different locations.
2616 $val = '';
2617 }
2618 else
2619 {
2620 $val = ('-rpath $(' . $instdirs{$onelib}{$rcond} . 'dir)');
2621 }
2622 if ($rcond->true)
2623 {
2624 # If $rcond is true there is only one condition and
2625 # there is no point defining an helper variable.
2626 $rpath = $val;
2627 }
2628 else
2629 {
2630 define_pretty_variable ($rpathvar, $rcond, INTERNAL, $val);
2631 }
2632 }
2634 # If the resulting library lies into a subdirectory,
2635 # make sure this directory will exist.
2636 my $dirstamp = require_build_directory_maybe ($onelib);
2638 # Remember to cleanup .libs/ in this directory.
2639 my $dirname = dirname $onelib;
2640 $libtool_clean_directories{$dirname} = 1;
2642 $output_rules .= &file_contents ('ltlibrary',
2643 $where,
2644 LTLIBRARY => $onelib,
2645 XLTLIBRARY => $xlib,
2646 RPATH => $rpath,
2647 XLINK => $xlink,
2648 DIRSTAMP => $dirstamp);
2649 if ($seen_libobjs)
2650 {
2651 if (var ($xlib . '_LIBADD'))
2652 {
2653 &check_libobjs_sources ($xlib, $xlib . '_LIBADD');
2654 }
2655 }
2656 }
2657 }
2659 # See if any _SOURCES variable were misspelled.
2660 sub check_typos ()
2661 {
2662 # It is ok if the user sets this particular variable.
2663 set_seen 'AM_LDFLAGS';
2665 foreach my $var (variables)
2666 {
2667 my $varname = $var->name;
2668 # A configure variable is always legitimate.
2669 next if exists $configure_vars{$varname};
2671 my $check = 0;
2672 foreach my $primary ('_SOURCES', '_LIBADD', '_LDADD', '_LDFLAGS',
2673 '_DEPENDENCIES')
2674 {
2675 if ($varname =~ /^(.*)$primary$/)
2676 {
2677 $check = $1;
2678 last;
2679 }
2680 }
2681 next unless $check;
2683 for my $cond ($var->conditions->conds)
2684 {
2685 msg_var ('syntax', $var, "variable `$varname' is defined but no"
2686 . " program or\nlibrary has `$check' as canonic name"
2687 . " (possible typo)")
2688 unless $var->rdef ($cond)->seen;
2689 }
2690 }
2691 }
2694 # Handle scripts.
2695 sub handle_scripts
2696 {
2697 # NOTE we no longer automatically clean SCRIPTS, because it is
2698 # useful to sometimes distribute scripts verbatim. This happens
2699 # e.g. in Automake itself.
2700 &am_install_var ('-candist', 'scripts', 'SCRIPTS',
2701 'bin', 'sbin', 'libexec', 'pkgdata',
2702 'noinst', 'check');
2703 }
2708 ## ------------------------ ##
2709 ## Handling Texinfo files. ##
2710 ## ------------------------ ##
2712 # ($OUTFILE, $VFILE, @CLEAN_FILES)
2713 # &scan_texinfo_file ($FILENAME)
2714 # ------------------------------
2715 # $OUTFILE - name of the info file produced by $FILENAME.
2716 # $VFILE - name of the version.texi file used (undef if none).
2717 # @CLEAN_FILES - list of byproducts (indexes etc.)
2718 sub scan_texinfo_file ($)
2719 {
2720 my ($filename) = @_;
2722 # Some of the following extensions are always created, no matter
2723 # whether indexes are used or not. Other (like cps, fns, ... pgs)
2724 # are only created when they are used. We used to scan $FILENAME
2725 # for their use, but that is not enough: they could be used in
2726 # included files. We can't scan included files because we don't
2727 # know the include path. Therefore we always erase these files, no
2728 # matter whether they are used or not.
2729 #
2730 # (tmp is only created if an @macro is used and a certain e-TeX
2731 # feature is not available.)
2732 my %clean_suffixes =
2733 map { $_ => 1 } (qw(aux log toc tmp
2734 cp cps
2735 fn fns
2736 ky kys
2737 vr vrs
2738 tp tps
2739 pg pgs)); # grep 'new.*index' texinfo.tex
2741 my $texi = new Automake::XFile "< $filename";
2742 verb "reading $filename";
2744 my ($outfile, $vfile);
2745 while ($_ = $texi->getline)
2746 {
2747 if (/^\@setfilename +(\S+)/)
2748 {
2749 # Honor only the first @setfilename. (It's possible to have
2750 # more occurrences later if the manual shows examples of how
2751 # to use @setfilename...)
2752 next if $outfile;
2754 $outfile = $1;
2755 if ($outfile =~ /\.(.+)$/ && $1 ne 'info')
2756 {
2757 error ("$filename:$.",
2758 "output `$outfile' has unrecognized extension");
2759 return;
2760 }
2761 }
2762 # A "version.texi" file is actually any file whose name matches
2763 # "vers*.texi".
2764 elsif (/^\@include\s+(vers[^.]*\.texi)\s*$/)
2765 {
2766 $vfile = $1;
2767 }
2769 # Try to find new or unused indexes.
2771 # Creating a new category of index.
2772 elsif (/^\@def(code)?index (\w+)/)
2773 {
2774 $clean_suffixes{$2} = 1;
2775 $clean_suffixes{"$2s"} = 1;
2776 }
2778 # Merging an index into an another.
2779 elsif (/^\@syn(code)?index (\w+) (\w+)/)
2780 {
2781 delete $clean_suffixes{"$2s"};
2782 $clean_suffixes{"$3s"} = 1;
2783 }
2785 }
2787 if (! $outfile)
2788 {
2789 err_am "`$filename' missing \@setfilename";
2790 return;
2791 }
2793 my $infobase = basename ($filename);
2794 $infobase =~ s/\.te?xi(nfo)?$//;
2795 return ($outfile, $vfile,
2796 map { "$infobase.$_" } (sort keys %clean_suffixes));
2797 }
2800 # ($DIRSTAMP, @CLEAN_FILES)
2801 # output_texinfo_build_rules ($SOURCE, $DEST, $INSRC, @DEPENDENCIES)
2802 # ------------------------------------------------------------------
2803 # SOURCE - the source Texinfo file
2804 # DEST - the destination Info file
2805 # INSRC - wether DEST should be built in the source tree
2806 # DEPENDENCIES - known dependencies
2807 sub output_texinfo_build_rules ($$$@)
2808 {
2809 my ($source, $dest, $insrc, @deps) = @_;
2811 # Split `a.texi' into `a' and `.texi'.
2812 my ($spfx, $ssfx) = ($source =~ /^(.*?)(\.[^.]*)?$/);
2813 my ($dpfx, $dsfx) = ($dest =~ /^(.*?)(\.[^.]*)?$/);
2815 $ssfx ||= "";
2816 $dsfx ||= "";
2818 # We can output two kinds of rules: the "generic" rules use Make
2819 # suffix rules and are appropriate when $source and $dest do not lie
2820 # in a sub-directory; the "specific" rules are needed in the other
2821 # case.
2822 #
2823 # The former are output only once (this is not really apparent here,
2824 # but just remember that some logic deeper in Automake will not
2825 # output the same rule twice); while the later need to be output for
2826 # each Texinfo source.
2827 my $generic;
2828 my $makeinfoflags;
2829 my $sdir = dirname $source;
2830 if ($sdir eq '.' && dirname ($dest) eq '.')
2831 {
2832 $generic = 1;
2833 $makeinfoflags = '-I $(srcdir)';
2834 }
2835 else
2836 {
2837 $generic = 0;
2838 $makeinfoflags = "-I $sdir -I \$(srcdir)/$sdir";
2839 }
2841 # A directory can contain two kinds of info files: some built in the
2842 # source tree, and some built in the build tree. The rules are
2843 # different in each case. However we cannot output two different
2844 # set of generic rules. Because in-source builds are more usual, we
2845 # use generic rules in this case and fall back to "specific" rules
2846 # for build-dir builds. (It should not be a problem to invert this
2847 # if needed.)
2848 $generic = 0 unless $insrc;
2850 # We cannot use a suffix rule to build info files with an empty
2851 # extension. Otherwise we would output a single suffix inference
2852 # rule, with separate dependencies, as in
2853 #
2854 # .texi:
2855 # $(MAKEINFO) ...
2856 # foo.info: foo.texi
2857 #
2858 # which confuse Solaris make. (See the Autoconf manual for
2859 # details.) Therefore we use a specific rule in this case. This
2860 # applies to info files only (dvi and pdf files always have an
2861 # extension).
2862 my $generic_info = ($generic && $dsfx) ? 1 : 0;
2864 # If the resulting file lie into a subdirectory,
2865 # make sure this directory will exist.
2866 my $dirstamp = require_build_directory_maybe ($dest);
2868 my $dipfx = ($insrc ? '$(srcdir)/' : '') . $dpfx;
2870 $output_rules .= file_contents ('texibuild',
2871 new Automake::Location,
2872 DEPS => "@deps",
2873 DEST_PREFIX => $dpfx,
2874 DEST_INFO_PREFIX => $dipfx,
2875 DEST_SUFFIX => $dsfx,
2876 DIRSTAMP => $dirstamp,
2877 GENERIC => $generic,
2878 GENERIC_INFO => $generic_info,
2879 INSRC => $insrc,
2880 MAKEINFOFLAGS => $makeinfoflags,
2881 SOURCE => ($generic
2882 ? '$<' : $source),
2883 SOURCE_INFO => ($generic_info
2884 ? '$<' : $source),
2885 SOURCE_REAL => $source,
2886 SOURCE_SUFFIX => $ssfx,
2887 );
2888 return ($dirstamp, "$dpfx.dvi", "$dpfx.pdf", "$dpfx.ps", "$dpfx.html");
2889 }
2892 # $TEXICLEANS
2893 # handle_texinfo_helper ($info_texinfos)
2894 # --------------------------------------
2895 # Handle all Texinfo source; helper for handle_texinfo.
2896 sub handle_texinfo_helper ($)
2897 {
2898 my ($info_texinfos) = @_;
2899 my (@infobase, @info_deps_list, @texi_deps);
2900 my %versions;
2901 my $done = 0;
2902 my @texi_cleans;
2904 # Build a regex matching user-cleaned files.
2905 my $d = var 'DISTCLEANFILES';
2906 my $c = var 'CLEANFILES';
2907 my @f = ();
2908 push @f, $d->value_as_list_recursive (inner_expand => 1) if $d;
2909 push @f, $c->value_as_list_recursive (inner_expand => 1) if $c;
2910 @f = map { s|[^A-Za-z_0-9*\[\]\-]|\\$&|g; s|\*|[^/]*|g; $_; } @f;
2911 my $user_cleaned_files = '^(?:' . join ('|', @f) . ')$';
2913 foreach my $texi
2914 ($info_texinfos->value_as_list_recursive (inner_expand => 1))
2915 {
2916 my $infobase = $texi;
2917 $infobase =~ s/\.(txi|texinfo|texi)$//;
2919 if ($infobase eq $texi)
2920 {
2921 # FIXME: report line number.
2922 err_am "texinfo file `$texi' has unrecognized extension";
2923 next;
2924 }
2926 push @infobase, $infobase;
2928 # If 'version.texi' is referenced by input file, then include
2929 # automatic versioning capability.
2930 my ($out_file, $vtexi, @clean_files) =
2931 scan_texinfo_file ("$relative_dir/$texi")
2932 or next;
2933 push (@texi_cleans, @clean_files);
2935 # If the Texinfo source is in a subdirectory, create the
2936 # resulting info in this subdirectory. If it is in the current
2937 # directory, try hard to not prefix "./" because it breaks the
2938 # generic rules.
2939 my $outdir = dirname ($texi) . '/';
2940 $outdir = "" if $outdir eq './';
2941 $out_file = $outdir . $out_file;
2943 # Until Automake 1.6.3, .info files were built in the
2944 # source tree. This was an obstacle to the support of
2945 # non-distributed .info files, and non-distributed .texi
2946 # files.
2947 #
2948 # * Non-distributed .texi files is important in some packages
2949 # where .texi files are built at make time, probably using
2950 # other binaries built in the package itself, maybe using
2951 # tools or information found on the build host. Because
2952 # these files are not distributed they are always rebuilt
2953 # at make time; they should therefore not lie in the source
2954 # directory. One plan was to support this using
2955 # nodist_info_TEXINFOS or something similar. (Doing this
2956 # requires some sanity checks. For instance Automake should
2957 # not allow:
2958 # dist_info_TEXINFO = foo.texi
2959 # nodist_foo_TEXINFO = included.texi
2960 # because a distributed file should never depend on a
2961 # non-distributed file.)
2962 #
2963 # * If .texi files are not distributed, then .info files should
2964 # not be distributed either. There are also cases where one
2965 # want to distribute .texi files, but do not want to
2966 # distribute the .info files. For instance the Texinfo package
2967 # distributes the tool used to build these files; it would
2968 # be a waste of space to distribute them. It's not clear
2969 # which syntax we should use to indicate that .info files should
2970 # not be distributed. Akim Demaille suggested that eventually
2971 # we switch to a new syntax:
2972 # | Maybe we should take some inspiration from what's already
2973 # | done in the rest of Automake. Maybe there is too much
2974 # | syntactic sugar here, and you want
2975 # | nodist_INFO = bar.info
2976 # | dist_bar_info_SOURCES = bar.texi
2977 # | bar_texi_DEPENDENCIES = foo.texi
2978 # | with a bit of magic to have bar.info represent the whole
2979 # | bar*info set. That's a lot more verbose that the current
2980 # | situation, but it is # not new, hence the user has less
2981 # | to learn.
2982 # |
2983 # | But there is still too much room for meaningless specs:
2984 # | nodist_INFO = bar.info
2985 # | dist_bar_info_SOURCES = bar.texi
2986 # | dist_PS = bar.ps something-written-by-hand.ps
2987 # | nodist_bar_ps_SOURCES = bar.texi
2988 # | bar_texi_DEPENDENCIES = foo.texi
2989 # | here bar.texi is dist_ in line 2, and nodist_ in 4.
2990 #
2991 # Back to the point, it should be clear that in order to support
2992 # non-distributed .info files, we need to build them in the
2993 # build tree, not in the source tree (non-distributed .texi
2994 # files are less of a problem, because we do not output build
2995 # rules for them). In Automake 1.7 .info build rules have been
2996 # largely cleaned up so that .info files get always build in the
2997 # build tree, even when distributed. The idea was that
2998 # (1) if during a VPATH build the .info file was found to be
2999 # absent or out-of-date (in the source tree or in the
3000 # build tree), Make would rebuild it in the build tree.
3001 # If an up-to-date source-tree of the .info file existed,
3002 # make would not rebuild it in the build tree.
3003 # (2) having two copies of .info files, one in the source tree
3004 # and one (newer) in the build tree is not a problem
3005 # because `make dist' always pick files in the build tree
3006 # first.
3007 # However it turned out the be a bad idea for several reasons:
3008 # * Tru64, OpenBSD, and FreeBSD (not NetBSD) Make do not behave
3009 # like GNU Make on point (1) above. These implementations
3010 # of Make would always rebuild .info files in the build
3011 # tree, even if such files were up to date in the source
3012 # tree. Consequently, it was impossible to perform a VPATH
3013 # build of a package containing Texinfo files using these
3014 # Make implementations.
3015 # (Refer to the Autoconf Manual, section "Limitation of
3016 # Make", paragraph "VPATH", item "target lookup", for
3017 # an account of the differences between these
3018 # implementations.)
3019 # * The GNU Coding Standards require these files to be built
3020 # in the source-tree (when they are distributed, that is).
3021 # * Keeping a fresher copy of distributed files in the
3022 # build tree can be annoying during development because
3023 # - if the files is kept under CVS, you really want it
3024 # to be updated in the source tree
3025 # - it is confusing that `make distclean' does not erase
3026 # all files in the build tree.
3027 #
3028 # Consequently, starting with Automake 1.8, .info files are
3029 # built in the source tree again. Because we still plan to
3030 # support non-distributed .info files at some point, we
3031 # have a single variable ($INSRC) that controls whether
3032 # the current .info file must be built in the source tree
3033 # or in the build tree. Actually this variable is switched
3034 # off for .info files that appear to be cleaned; this is
3035 # for backward compatibility with package such as Texinfo,
3036 # which do things like
3037 # info_TEXINFOS = texinfo.txi info-stnd.texi info.texi
3038 # DISTCLEANFILES = texinfo texinfo-* info*.info*
3039 # # Do not create info files for distribution.
3040 # dist-info:
3041 # in order not to distribute .info files.
3042 my $insrc = ($out_file =~ $user_cleaned_files) ? 0 : 1;
3044 my $soutdir = '$(srcdir)/' . $outdir;
3045 $outdir = $soutdir if $insrc;
3047 # If user specified file_TEXINFOS, then use that as explicit
3048 # dependency list.
3049 @texi_deps = ();
3050 push (@texi_deps, "$soutdir$vtexi") if $vtexi;
3052 my $canonical = canonicalize ($infobase);
3053 if (var ($canonical . "_TEXINFOS"))
3054 {
3055 push (@texi_deps, '$(' . $canonical . '_TEXINFOS)');
3056 push_dist_common ('$(' . $canonical . '_TEXINFOS)');
3057 }
3059 my ($dirstamp, @cfiles) =
3060 output_texinfo_build_rules ($texi, $out_file, $insrc, @texi_deps);
3061 push (@texi_cleans, @cfiles);
3063 push (@info_deps_list, $out_file);
3065 # If a vers*.texi file is needed, emit the rule.
3066 if ($vtexi)
3067 {
3068 err_am ("`$vtexi', included in `$texi', "
3069 . "also included in `$versions{$vtexi}'")
3070 if defined $versions{$vtexi};
3071 $versions{$vtexi} = $texi;
3073 # We number the stamp-vti files. This is doable since the
3074 # actual names don't matter much. We only number starting
3075 # with the second one, so that the common case looks nice.
3076 my $vti = ($done ? $done : 'vti');
3077 ++$done;
3079 # This is ugly, but it is our historical practice.
3080 if ($config_aux_dir_set_in_configure_ac)
3081 {
3082 require_conf_file_with_macro (TRUE, 'info_TEXINFOS', FOREIGN,
3083 'mdate-sh');
3084 }
3085 else
3086 {
3087 require_file_with_macro (TRUE, 'info_TEXINFOS',
3088 FOREIGN, 'mdate-sh');
3089 }
3091 my $conf_dir;
3092 if ($config_aux_dir_set_in_configure_ac)
3093 {
3094 $conf_dir = "$am_config_aux_dir/";
3095 }
3096 else
3097 {
3098 $conf_dir = '$(srcdir)/';
3099 }
3100 $output_rules .= file_contents ('texi-vers',
3101 new Automake::Location,
3102 TEXI => $texi,
3103 VTI => $vti,
3104 STAMPVTI => "${soutdir}stamp-$vti",
3105 VTEXI => "$soutdir$vtexi",
3106 MDDIR => $conf_dir,
3107 DIRSTAMP => $dirstamp);
3108 }
3109 }
3111 # Handle location of texinfo.tex.
3112 my $need_texi_file = 0;
3113 my $texinfodir;
3114 if (var ('TEXINFO_TEX'))
3115 {
3116 # The user defined TEXINFO_TEX so assume he knows what he is
3117 # doing.
3118 $texinfodir = ('$(srcdir)/'
3119 . dirname (variable_value ('TEXINFO_TEX')));
3120 }
3121 elsif (option 'cygnus')
3122 {
3123 $texinfodir = '$(top_srcdir)/../texinfo';
3124 define_variable ('TEXINFO_TEX', "$texinfodir/texinfo.tex", INTERNAL);
3125 }
3126 elsif ($config_aux_dir_set_in_configure_ac)
3127 {
3128 $texinfodir = $am_config_aux_dir;
3129 define_variable ('TEXINFO_TEX', "$texinfodir/texinfo.tex", INTERNAL);
3130 $need_texi_file = 2; # so that we require_conf_file later
3131 }
3132 else
3133 {
3134 $texinfodir = '$(srcdir)';
3135 $need_texi_file = 1;
3136 }
3137 define_variable ('am__TEXINFO_TEX_DIR', $texinfodir, INTERNAL);
3139 push (@dist_targets, 'dist-info');
3141 if (! option 'no-installinfo')
3142 {
3143 # Make sure documentation is made and installed first. Use
3144 # $(INFO_DEPS), not 'info', because otherwise recursive makes
3145 # get run twice during "make all".
3146 unshift (@all, '$(INFO_DEPS)');
3147 }
3149 define_files_variable ("DVIS", @infobase, 'dvi', INTERNAL);
3150 define_files_variable ("PDFS", @infobase, 'pdf', INTERNAL);
3151 define_files_variable ("PSS", @infobase, 'ps', INTERNAL);
3152 define_files_variable ("HTMLS", @infobase, 'html', INTERNAL);
3154 # This next isn't strictly needed now -- the places that look here
3155 # could easily be changed to look in info_TEXINFOS. But this is
3156 # probably better, in case noinst_TEXINFOS is ever supported.
3157 define_variable ("TEXINFOS", variable_value ('info_TEXINFOS'), INTERNAL);
3159 # Do some error checking. Note that this file is not required
3160 # when in Cygnus mode; instead we defined TEXINFO_TEX explicitly
3161 # up above.
3162 if ($need_texi_file && ! option 'no-texinfo.tex')
3163 {
3164 if ($need_texi_file > 1)
3165 {
3166 require_conf_file_with_macro (TRUE, 'info_TEXINFOS', FOREIGN,
3167 'texinfo.tex');
3168 }
3169 else
3170 {
3171 require_file_with_macro (TRUE, 'info_TEXINFOS', FOREIGN,
3172 'texinfo.tex');
3173 }
3174 }
3176 return makefile_wrap ("", "\t ", @texi_cleans);
3177 }
3180 # handle_texinfo ()
3181 # -----------------
3182 # Handle all Texinfo source.
3183 sub handle_texinfo ()
3184 {
3185 reject_var 'TEXINFOS', "`TEXINFOS' is an anachronism; use `info_TEXINFOS'";
3186 # FIXME: I think this is an obsolete future feature name.
3187 reject_var 'html_TEXINFOS', "HTML generation not yet supported";
3189 my $info_texinfos = var ('info_TEXINFOS');
3190 my $texiclean = "";
3191 if ($info_texinfos)
3192 {
3193 $texiclean = handle_texinfo_helper ($info_texinfos);
3194 }
3195 $output_rules .= file_contents ('texinfos',
3196 new Automake::Location,
3197 TEXICLEAN => $texiclean,
3198 'LOCAL-TEXIS' => !!$info_texinfos);
3199 }
3202 # Handle any man pages.
3203 sub handle_man_pages
3204 {
3205 reject_var 'MANS', "`MANS' is an anachronism; use `man_MANS'";
3207 # Find all the sections in use. We do this by first looking for
3208 # "standard" sections, and then looking for any additional
3209 # sections used in man_MANS.
3210 my (%sections, %vlist);
3211 # We handle nodist_ for uniformity. man pages aren't distributed
3212 # by default so it isn't actually very important.
3213 foreach my $pfx ('', 'dist_', 'nodist_')
3214 {
3215 # Add more sections as needed.
3216 foreach my $section ('0'..'9', 'n', 'l')
3217 {
3218 my $varname = $pfx . 'man' . $section . '_MANS';
3219 if (var ($varname))
3220 {
3221 $sections{$section} = 1;
3222 $varname = '$(' . $varname . ')';
3223 $vlist{$varname} = 1;
3225 &push_dist_common ($varname)
3226 if $pfx eq 'dist_';
3227 }
3228 }
3230 my $varname = $pfx . 'man_MANS';
3231 my $var = var ($varname);
3232 if ($var)
3233 {
3234 foreach ($var->value_as_list_recursive)
3235 {
3236 # A page like `foo.1c' goes into man1dir.
3237 if (/\.([0-9a-z])([a-z]*)$/)
3238 {
3239 $sections{$1} = 1;
3240 }
3241 }
3243 $varname = '$(' . $varname . ')';
3244 $vlist{$varname} = 1;
3245 &push_dist_common ($varname)
3246 if $pfx eq 'dist_';
3247 }
3248 }
3250 return unless %sections;
3252 # Now for each section, generate an install and uninstall rule.
3253 # Sort sections so output is deterministic.
3254 foreach my $section (sort keys %sections)
3255 {
3256 $output_rules .= &file_contents ('mans',
3257 new Automake::Location,
3258 SECTION => $section);
3259 }
3261 my @mans = sort keys %vlist;
3262 $output_vars .= file_contents ('mans-vars',
3263 new Automake::Location,
3264 MANS => "@mans");
3266 push (@all, '$(MANS)')
3267 unless option 'no-installman';
3268 }
3270 # Handle DATA variables.
3271 sub handle_data
3272 {
3273 &am_install_var ('-noextra', '-candist', 'data', 'DATA',
3274 'data', 'sysconf', 'sharedstate', 'localstate',
3275 'pkgdata', 'lisp', 'noinst', 'check');
3276 }
3278 # Handle TAGS.
3279 sub handle_tags
3280 {
3281 my @tag_deps = ();
3282 my @ctag_deps = ();
3283 if (var ('SUBDIRS'))
3284 {
3285 $output_rules .= ("tags-recursive:\n"
3286 . "\tlist=\'\$(SUBDIRS)\'; for subdir in \$\$list; do \\\n"
3287 # Never fail here if a subdir fails; it
3288 # isn't important.
3289 . "\t test \"\$\$subdir\" = . || (cd \$\$subdir"
3290 . " && \$(MAKE) \$(AM_MAKEFLAGS) tags); \\\n"
3291 . "\tdone\n");
3292 push (@tag_deps, 'tags-recursive');
3293 &depend ('.PHONY', 'tags-recursive');
3295 $output_rules .= ("ctags-recursive:\n"
3296 . "\tlist=\'\$(SUBDIRS)\'; for subdir in \$\$list; do \\\n"
3297 # Never fail here if a subdir fails; it
3298 # isn't important.
3299 . "\t test \"\$\$subdir\" = . || (cd \$\$subdir"
3300 . " && \$(MAKE) \$(AM_MAKEFLAGS) ctags); \\\n"
3301 . "\tdone\n");
3302 push (@ctag_deps, 'ctags-recursive');
3303 &depend ('.PHONY', 'ctags-recursive');
3304 }
3306 if (&saw_sources_p (1)
3307 || var ('ETAGS_ARGS')
3308 || @tag_deps)
3309 {
3310 my @config;
3311 foreach my $spec (@config_headers)
3312 {
3313 my ($out, @ins) = split_config_file_spec ($spec);
3314 foreach my $in (@ins)
3315 {
3316 # If the config header source is in this directory,
3317 # require it.
3318 push @config, basename ($in)
3319 if $relative_dir eq dirname ($in);
3320 }
3321 }
3322 $output_rules .= &file_contents ('tags',
3323 new Automake::Location,
3324 CONFIG => "@config",
3325 TAGSDIRS => "@tag_deps",
3326 CTAGSDIRS => "@ctag_deps");
3328 set_seen 'TAGS_DEPENDENCIES';
3329 }
3330 elsif (reject_var ('TAGS_DEPENDENCIES',
3331 "doesn't make sense to define `TAGS_DEPENDENCIES'"
3332 . "without\nsources or `ETAGS_ARGS'"))
3333 {
3334 }
3335 else
3336 {
3337 # Every Makefile must define some sort of TAGS rule.
3338 # Otherwise, it would be possible for a top-level "make TAGS"
3339 # to fail because some subdirectory failed.
3340 $output_rules .= "tags: TAGS\nTAGS:\n\n";
3341 # Ditto ctags.
3342 $output_rules .= "ctags: CTAGS\nCTAGS:\n\n";
3343 }
3344 }
3346 # Handle multilib support.
3347 sub handle_multilib
3348 {
3349 if ($seen_multilib && $relative_dir eq '.')
3350 {
3351 $output_rules .= &file_contents ('multilib', new Automake::Location);
3352 push (@all, 'all-multi');
3353 }
3354 }
3357 # user_phony_rule ($NAME)
3358 # -----------------------
3359 # Return false if rule $NAME does not exist. Otherwise,
3360 # declare it as phony, complete its definition (in case it is
3361 # conditional), and return its Automake::Rule instance.
3362 sub user_phony_rule ($)
3363 {
3364 my ($name) = @_;
3365 my $rule = rule $name;
3366 if ($rule)
3367 {
3368 depend ('.PHONY', $name);
3369 # Define $NAME in all condition where it is not already defined,
3370 # so that it is always OK to depend on $NAME.
3371 for my $c ($rule->not_always_defined_in_cond (TRUE)->conds)
3372 {
3373 Automake::Rule::define ($name, 'internal', RULE_AUTOMAKE,
3374 $c, INTERNAL);
3375 $output_rules .= $c->subst_string . "$name:\n";
3376 }
3377 }
3378 return $rule;
3379 }
3382 # $BOOLEAN
3383 # &for_dist_common ($A, $B)
3384 # -------------------------
3385 # Subroutine for &handle_dist: sort files to dist.
3386 #
3387 # We put README first because it then becomes easier to make a
3388 # Usenet-compliant shar file (in these, README must be first).
3389 #
3390 # FIXME: do more ordering of files here.
3391 sub for_dist_common
3392 {
3393 return 0
3394 if $a eq $b;
3395 return -1
3396 if $a eq 'README';
3397 return 1
3398 if $b eq 'README';
3399 return $a cmp $b;
3400 }
3403 # handle_dist
3404 # -----------
3405 # Handle 'dist' target.
3406 sub handle_dist ()
3407 {
3408 # Substutions for distdit.am
3409 my %transform;
3411 # Define DIST_SUBDIRS. This must always be done, regardless of the
3412 # no-dist setting: target like `distclean' or `maintainer-clean' use it.
3413 my $subdirs = var ('SUBDIRS');
3414 if ($subdirs)
3415 {
3416 # If SUBDIRS is conditionally defined, then set DIST_SUBDIRS
3417 # to all possible directories, and use it. If DIST_SUBDIRS is
3418 # defined, just use it.
3420 # Note that we check DIST_SUBDIRS first on purpose, so that
3421 # we don't call has_conditional_contents for now reason.
3422 # (In the past one project used so many conditional subdirectories
3423 # that calling has_conditional_contents on SUBDIRS caused
3424 # automake to grow to 150Mb -- this should not happen with
3425 # the current implementation of has_conditional_contents,
3426 # but it's more efficient to avoid the call anyway.)
3427 if (var ('DIST_SUBDIRS'))
3428 {
3429 }
3430 elsif ($subdirs->has_conditional_contents)
3431 {
3432 define_pretty_variable
3433 ('DIST_SUBDIRS', TRUE, INTERNAL,
3434 uniq ($subdirs->value_as_list_recursive));
3435 }
3436 else
3437 {
3438 # We always define this because that is what `distclean'
3439 # wants.
3440 define_pretty_variable ('DIST_SUBDIRS', TRUE, INTERNAL,
3441 '$(SUBDIRS)');
3442 }
3443 }
3445 # The remaining definitions are only required when a dist target is used.
3446 return if option 'no-dist';
3448 # At least one of the archive formats must be enabled.
3449 if ($relative_dir eq '.')
3450 {
3451 my $archive_defined = option 'no-dist-gzip' ? 0 : 1;
3452 $archive_defined ||=
3453 grep { option "dist-$_" } ('shar', 'zip', 'tarZ', 'bzip2');
3454 error (option 'no-dist-gzip',
3455 "no-dist-gzip specified but no dist-* specified, "
3456 . "at least one archive format must be enabled")
3457 unless $archive_defined;
3458 }
3460 # Look for common files that should be included in distribution.
3461 # If the aux dir is set, and it does not have a Makefile.am, then
3462 # we check for these files there as well.
3463 my $check_aux = 0;
3464 if ($relative_dir eq '.'
3465 && $config_aux_dir_set_in_configure_ac)
3466 {
3467 if (! &is_make_dir ($config_aux_dir))
3468 {
3469 $check_aux = 1;
3470 }
3471 }
3472 foreach my $cfile (@common_files)
3473 {
3474 if (-f ($relative_dir . "/" . $cfile)
3475 # The file might be absent, but if it can be built it's ok.
3476 || rule $cfile)
3477 {
3478 &push_dist_common ($cfile);
3479 }
3481 # Don't use `elsif' here because a file might meaningfully
3482 # appear in both directories.
3483 if ($check_aux && -f "$config_aux_dir/$cfile")
3484 {
3485 &push_dist_common ("$config_aux_dir/$cfile")
3486 }
3487 }
3489 # We might copy elements from $configure_dist_common to
3490 # %dist_common if we think we need to. If the file appears in our
3491 # directory, we would have discovered it already, so we don't
3492 # check that. But if the file is in a subdir without a Makefile,
3493 # we want to distribute it here if we are doing `.'. Ugly!
3494 if ($relative_dir eq '.')
3495 {
3496 foreach my $file (split (' ' , $configure_dist_common))
3497 {
3498 push_dist_common ($file)
3499 unless is_make_dir (dirname ($file));
3500 }
3501 }
3503 # Files to distributed. Don't use ->value_as_list_recursive
3504 # as it recursively expands `$(dist_pkgdata_DATA)' etc.
3505 my @dist_common = split (' ', rvar ('DIST_COMMON')->variable_value);
3506 @dist_common = uniq (sort for_dist_common (@dist_common));
3507 variable_delete 'DIST_COMMON';
3508 define_pretty_variable ('DIST_COMMON', TRUE, INTERNAL, @dist_common);
3510 # Now that we've processed DIST_COMMON, disallow further attempts
3511 # to set it.
3512 $handle_dist_run = 1;
3514 # Scan EXTRA_DIST to see if we need to distribute anything from a
3515 # subdir. If so, add it to the list. I didn't want to do this
3516 # originally, but there were so many requests that I finally
3517 # relented.
3518 my $extra_dist = var ('EXTRA_DIST');
3519 if ($extra_dist)
3520 {
3521 # FIXME: This should be fixed to work with conditions. That
3522 # will require only making the entries in %dist_dirs under the
3523 # appropriate condition. This is meaningful if the nature of
3524 # the distribution should depend upon the configure options
3525 # used.
3526 foreach ($extra_dist->value_as_list_recursive (skip_ac_subst => 1))
3527 {
3528 next unless s,/+[^/]+$,,;
3529 $dist_dirs{$_} = 1
3530 unless $_ eq '.';
3531 }
3532 }
3534 # We have to check DIST_COMMON for extra directories in case the
3535 # user put a source used in AC_OUTPUT into a subdir.
3536 my $topsrcdir = backname ($relative_dir);
3537 foreach (rvar ('DIST_COMMON')->value_as_list_recursive (skip_ac_subst => 1))
3538 {
3539 s/\$\(top_srcdir\)/$topsrcdir/;
3540 s/\$\(srcdir\)/./;
3541 # Strip any leading `./'.
3542 s,^(:?\./+)*,,;
3543 next unless s,/+[^/]+$,,;
3544 $dist_dirs{$_} = 1
3545 unless $_ eq '.';
3546 }
3548 $transform{'DISTCHECK-HOOK'} = !! rule 'distcheck-hook';
3549 $transform{'GETTEXT'} = $seen_gettext && !$seen_gettext_external;
3551 # Prepend $(distdir) to each directory given.
3552 my %rewritten = map { '$(distdir)/' . "$_" => 1 } keys %dist_dirs;
3553 $transform{'DISTDIRS'} = join (' ', sort keys %rewritten);
3555 # If the target `dist-hook' exists, make sure it is run. This
3556 # allows users to do random weird things to the distribution
3557 # before it is packaged up.
3558 push (@dist_targets, 'dist-hook')
3559 if user_phony_rule 'dist-hook';
3560 $transform{'DIST-TARGETS'} = join (' ', @dist_targets);
3562 my $flm = option ('filename-length-max');
3563 my $filename_filter = $flm ? '.' x $flm->[1] : '';
3565 $output_rules .= &file_contents ('distdir',
3566 new Automake::Location,
3567 %transform,
3568 FILENAME_FILTER => $filename_filter);
3569 }
3572 # check_directory ($NAME, $WHERE)
3573 # -------------------------------
3574 # Ensure $NAME is a directory, and that it uses sane name.
3575 # Use $WHERE as a location in the diagnostic, if any.
3576 sub check_directory ($$)
3577 {
3578 my ($dir, $where) = @_;
3580 error $where, "required directory $relative_dir/$dir does not exist"
3581 unless -d "$relative_dir/$dir";
3583 # If an `obj/' directory exists, BSD make will enter it before
3584 # reading `Makefile'. Hence the `Makefile' in the current directory
3585 # will not be read.
3586 #
3587 # % cat Makefile
3588 # all:
3589 # echo Hello
3590 # % cat obj/Makefile
3591 # all:
3592 # echo World
3593 # % make # GNU make
3594 # echo Hello
3595 # Hello
3596 # % pmake # BSD make
3597 # echo World
3598 # World
3599 msg ('portability', $where,
3600 "naming a subdirectory `obj' causes troubles with BSD make")
3601 if $dir eq 'obj';
3603 # `aux' is probably the most important of the following forbidden name,
3604 # since it's tempting to use it as an AC_CONFIG_AUX_DIR.
3605 msg ('portability', $where,
3606 "name `$dir' is reserved on W32 and DOS platforms")
3607 if grep (/^$dir$/i, qw/aux lpt1 lpt2 lpt3 com1 com2 com3 com4 con prn/);
3608 }
3610 # check_directories_in_var ($VARIABLE)
3611 # ------------------------------------
3612 # Recursively check all items in variables $VARIABLE as directories
3613 sub check_directories_in_var ($)
3614 {
3615 my ($var) = @_;
3616 $var->traverse_recursively
3617 (sub
3618 {
3619 my ($var, $val, $cond, $full_cond) = @_;
3620 check_directory ($val, $var->rdef ($cond)->location);
3621 return ();
3622 },
3623 undef,
3624 skip_ac_subst => 1);
3625 }
3627 # &handle_subdirs ()
3628 # ------------------
3629 # Handle subdirectories.
3630 sub handle_subdirs ()
3631 {
3632 my $subdirs = var ('SUBDIRS');
3633 return
3634 unless $subdirs;
3636 check_directories_in_var $subdirs;
3638 my $dsubdirs = var ('DIST_SUBDIRS');
3639 check_directories_in_var $dsubdirs
3640 if $dsubdirs;
3642 $output_rules .= &file_contents ('subdirs', new Automake::Location);
3643 rvar ('RECURSIVE_TARGETS')->rdef (TRUE)->{'pretty'} = VAR_SORTED; # Gross!
3644 }
3647 # ($REGEN, @DEPENDENCIES)
3648 # &scan_aclocal_m4
3649 # ----------------
3650 # If aclocal.m4 creation is automated, return the list of its dependencies.
3651 sub scan_aclocal_m4 ()
3652 {
3653 my $regen_aclocal = 0;
3655 set_seen 'CONFIG_STATUS_DEPENDENCIES';
3656 set_seen 'CONFIGURE_DEPENDENCIES';
3658 if (-f 'aclocal.m4')
3659 {
3660 &define_variable ("ACLOCAL_M4", '$(top_srcdir)/aclocal.m4', INTERNAL);
3662 my $aclocal = new Automake::XFile "< aclocal.m4";
3663 my $line = $aclocal->getline;
3664 $regen_aclocal = $line =~ 'generated automatically by aclocal';
3665 }
3667 my @ac_deps = ();
3669 if (set_seen ('ACLOCAL_M4_SOURCES'))
3670 {
3671 push (@ac_deps, '$(ACLOCAL_M4_SOURCES)');
3672 msg_var ('obsolete', 'ACLOCAL_M4_SOURCES',
3673 "`ACLOCAL_M4_SOURCES' is obsolete.\n"
3674 . "It should be safe to simply remove it.");
3675 }
3677 # Note that it might be possible that aclocal.m4 doesn't exist but
3678 # should be auto-generated. This case probably isn't very
3679 # important.
3681 return ($regen_aclocal, @ac_deps);
3682 }
3685 # @DEPENDENCIES
3686 # &prepend_srcdir (@INPUTS)
3687 # -------------------------
3688 # Prepend $(srcdir) or $(top_srcdir) to all @INPUTS. The idea is that
3689 # if an input file has a directory part the same as the current
3690 # directory, then the directory part is simply replaced by $(srcdir).
3691 # But if the directory part is different, then $(top_srcdir) is
3692 # prepended.
3693 sub prepend_srcdir (@)
3694 {
3695 my (@inputs) = @_;
3696 my @newinputs;
3698 foreach my $single (@inputs)
3699 {
3700 if (dirname ($single) eq $relative_dir)
3701 {
3702 push (@newinputs, '$(srcdir)/' . basename ($single));
3703 }
3704 else
3705 {
3706 push (@newinputs, '$(top_srcdir)/' . $single);
3707 }
3708 }
3709 return @newinputs;
3710 }
3712 # @DEPENDENCIES
3713 # rewrite_inputs_into_dependencies ($OUTPUT, @INPUTS)
3714 # ---------------------------------------------------
3715 # Compute a list of dependencies appropriate for the rebuild
3716 # rule of
3717 # AC_CONFIG_FILES($OUTPUT:$INPUT[0]:$INPUTS[1]:...)
3718 # Also distribute $INPUTs which are not build by another AC_CONFIG_FILES.
3719 sub rewrite_inputs_into_dependencies ($@)
3720 {
3721 my ($file, @inputs) = @_;
3722 my @res = ();
3724 for my $i (@inputs)
3725 {
3726 if (exists $ac_config_files_location{$i})
3727 {
3728 my $di = dirname $i;
3729 if ($di eq $relative_dir)
3730 {
3731 $i = basename $i;
3732 }
3733 # In the top-level Makefile we do not use $(top_builddir), because
3734 # we are already there, and since the targets are built without
3735 # a $(top_builddir), it helps BSD Make to match them with
3736 # dependencies.
3737 elsif ($relative_dir ne '.')
3738 {
3739 $i = '$(top_builddir)/' . $i;
3740 }
3741 }
3742 else
3743 {
3744 msg ('error', $ac_config_files_location{$file},
3745 "required file `$i' not found")
3746 unless exists $output_files{$i} || -f $i;
3747 ($i) = prepend_srcdir ($i);
3748 push_dist_common ($i);
3749 }
3750 push @res, $i;
3751 }
3752 return @res;
3753 }
3757 # &handle_configure ($MAKEFILE_AM, $MAKEFILE_IN, $MAKEFILE, @INPUTS)
3758 # ------------------------------------------------------------------
3759 # Handle remaking and configure stuff.
3760 # We need the name of the input file, to do proper remaking rules.
3761 sub handle_configure ($$$@)
3762 {
3763 my ($makefile_am, $makefile_in, $makefile, @inputs) = @_;
3765 prog_error 'empty @inputs'
3766 unless @inputs;
3768 my ($rel_makefile_am, $rel_makefile_in) = prepend_srcdir ($makefile_am,
3769 $makefile_in);
3770 my $rel_makefile = basename $makefile;
3772 my $colon_infile = ':' . join (':', @inputs);
3773 $colon_infile = '' if $colon_infile eq ":$makefile.in";
3774 my @rewritten = rewrite_inputs_into_dependencies ($makefile, @inputs);
3775 my ($regen_aclocal_m4, @aclocal_m4_deps) = scan_aclocal_m4;
3776 define_pretty_variable ('am__aclocal_m4_deps', TRUE, INTERNAL,
3777 @configure_deps, @aclocal_m4_deps,
3778 '$(top_srcdir)/' . $configure_ac);
3779 my @configuredeps = ('$(am__aclocal_m4_deps)', '$(CONFIGURE_DEPENDENCIES)');
3780 push @configuredeps, '$(ACLOCAL_M4)' if -f 'aclocal.m4';
3781 define_pretty_variable ('am__configure_deps', TRUE, INTERNAL,
3782 @configuredeps);
3784 $output_rules .= file_contents
3785 ('configure',
3786 new Automake::Location,
3787 MAKEFILE => $rel_makefile,
3788 'MAKEFILE-DEPS' => "@rewritten",
3789 'CONFIG-MAKEFILE' => ($relative_dir eq '.') ? '$@' : '$(subdir)/$@',
3790 'MAKEFILE-IN' => $rel_makefile_in,
3791 'MAKEFILE-IN-DEPS' => "@include_stack",
3792 'MAKEFILE-AM' => $rel_makefile_am,
3793 STRICTNESS => global_option 'cygnus'
3794 ? 'cygnus' : $strictness_name,
3795 'USE-DEPS' => global_option 'no-dependencies'
3796 ? ' --ignore-deps' : '',
3797 'MAKEFILE-AM-SOURCES' => "$makefile$colon_infile",
3798 'REGEN-ACLOCAL-M4' => $regen_aclocal_m4);
3800 if ($relative_dir eq '.')
3801 {
3802 &push_dist_common ('acconfig.h')
3803 if -f 'acconfig.h';
3804 }
3806 # If we have a configure header, require it.
3807 my $hdr_index = 0;
3808 my @distclean_config;
3809 foreach my $spec (@config_headers)
3810 {
3811 $hdr_index += 1;
3812 # $CONFIG_H_PATH: config.h from top level.
3813 my ($config_h_path, @ins) = split_config_file_spec ($spec);
3814 my $config_h_dir = dirname ($config_h_path);
3816 # If the header is in the current directory we want to build
3817 # the header here. Otherwise, if we're at the topmost
3818 # directory and the header's directory doesn't have a
3819 # Makefile, then we also want to build the header.
3820 if ($relative_dir eq $config_h_dir
3821 || ($relative_dir eq '.' && ! &is_make_dir ($config_h_dir)))
3822 {
3823 my ($cn_sans_dir, $stamp_dir);
3824 if ($relative_dir eq $config_h_dir)
3825 {
3826 $cn_sans_dir = basename ($config_h_path);
3827 $stamp_dir = '';
3828 }
3829 else
3830 {
3831 $cn_sans_dir = $config_h_path;
3832 if ($config_h_dir eq '.')
3833 {
3834 $stamp_dir = '';
3835 }
3836 else
3837 {
3838 $stamp_dir = $config_h_dir . '/';
3839 }
3840 }
3842 # This will also distribute all inputs.
3843 @ins = rewrite_inputs_into_dependencies ($config_h_path, @ins);
3845 # Header defined and in this directory.
3846 my @files;
3847 if (-f $config_h_path . '.top')
3848 {
3849 push (@files, "$cn_sans_dir.top");
3850 }
3851 if (-f $config_h_path . '.bot')
3852 {
3853 push (@files, "$cn_sans_dir.bot");
3854 }
3856 push_dist_common (@files);
3858 # For now, acconfig.h can only appear in the top srcdir.
3859 if (-f 'acconfig.h')
3860 {
3861 push (@files, '$(top_srcdir)/acconfig.h');
3862 }
3864 my $stamp = "${stamp_dir}stamp-h${hdr_index}";
3865 $output_rules .=
3866 file_contents ('remake-hdr',
3867 new Automake::Location,
3868 FILES => "@files",
3869 CONFIG_H => $cn_sans_dir,
3870 CONFIG_HIN => $ins[0],
3871 CONFIG_H_DEPS => "@ins",
3872 CONFIG_H_PATH => $config_h_path,
3873 STAMP => "$stamp");
3875 push @distclean_config, $cn_sans_dir, $stamp;
3876 }
3877 }
3879 $output_rules .= file_contents ('clean-hdr',
3880 new Automake::Location,
3881 FILES => "@distclean_config")
3882 if @distclean_config;
3884 # Distribute and define mkinstalldirs only if it is already present
3885 # in the package, for backward compatibility (some people my still
3886 # use $(mkinstalldirs)).
3887 my $mkidpath = "$config_aux_dir/mkinstalldirs";
3888 if (-f $mkidpath)
3889 {
3890 # Use require_file so that any existingscript gets updated
3891 # by --force-missing.
3892 require_conf_file ($mkidpath, FOREIGN, 'mkinstalldirs');
3893 define_variable ('mkinstalldirs',
3894 "\$(SHELL) $am_config_aux_dir/mkinstalldirs", INTERNAL);
3895 }
3896 else
3897 {
3898 define_variable ('mkinstalldirs', '$(mkdir_p)', INTERNAL);
3899 }
3901 reject_var ('CONFIG_HEADER',
3902 "`CONFIG_HEADER' is an anachronism; now determined "
3903 . "automatically\nfrom `$configure_ac'");
3905 my @config_h;
3906 foreach my $spec (@config_headers)
3907 {
3908 my ($out, @ins) = split_config_file_spec ($spec);
3909 # Generate CONFIG_HEADER define.
3910 if ($relative_dir eq dirname ($out))
3911 {
3912 push @config_h, basename ($out);
3913 }
3914 else
3915 {
3916 push @config_h, "\$(top_builddir)/$out";
3917 }
3918 }
3919 define_variable ("CONFIG_HEADER", "@config_h", INTERNAL)
3920 if @config_h;
3922 # Now look for other files in this directory which must be remade
3923 # by config.status, and generate rules for them.
3924 my @actual_other_files = ();
3925 foreach my $lfile (@other_input_files)
3926 {
3927 my $file;
3928 my @inputs;
3929 if ($lfile =~ /^([^:]*):(.*)$/)
3930 {
3931 # This is the ":" syntax of AC_OUTPUT.
3932 $file = $1;
3933 @inputs = split (':', $2);
3934 }
3935 else
3936 {
3937 # Normal usage.
3938 $file = $lfile;
3939 @inputs = $file . '.in';
3940 }
3942 # Automake files should not be stored in here, but in %MAKE_LIST.
3943 prog_error ("$lfile in \@other_input_files\n"
3944 . "\@other_input_files = (@other_input_files)")
3945 if -f $file . '.am';
3947 my $local = basename ($file);
3949 # Make sure the dist directory for each input file is created.
3950 # We only have to do this at the topmost level though. This
3951 # is a bit ugly but it easier than spreading out the logic,
3952 # especially in cases like AC_OUTPUT(foo/out:bar/in), where
3953 # there is no Makefile in bar/.
3954 if ($relative_dir eq '.')
3955 {
3956 foreach (@inputs)
3957 {
3958 $dist_dirs{dirname ($_)} = 1;
3959 }
3960 }
3962 # We skip files that aren't in this directory. However, if
3963 # the file's directory does not have a Makefile, and we are
3964 # currently doing `.', then we create a rule to rebuild the
3965 # file in the subdir.
3966 my $fd = dirname ($file);
3967 if ($fd ne $relative_dir)
3968 {
3969 if ($relative_dir eq '.' && ! &is_make_dir ($fd))
3970 {
3971 $local = $file;
3972 }
3973 else
3974 {
3975 next;
3976 }
3977 }
3979 my @rewritten_inputs = rewrite_inputs_into_dependencies ($file, @inputs);
3981 $output_rules .= ($local . ': '
3982 . '$(top_builddir)/config.status '
3983 . "@rewritten_inputs\n"
3984 . "\t"
3985 . 'cd $(top_builddir) && '
3986 . '$(SHELL) ./config.status '
3987 . ($relative_dir eq '.' ? '' : '$(subdir)/')
3988 . '$@'
3989 . "\n");
3990 push (@actual_other_files, $local);
3991 }
3993 # For links we should clean destinations and distribute sources.
3994 foreach my $spec (@config_links)
3995 {
3996 my ($link, $file) = split /:/, $spec;
3997 # Some people do AC_CONFIG_LINKS($computed). We only handle
3998 # the DEST:SRC form.
3999 next unless $file;
4000 my $where = $ac_config_files_location{$link};
4002 # Skip destinations that contain shell variables.
4003 if ($link !~ /\$/)
4004 {
4005 # We skip links that aren't in this directory. However, if
4006 # the link's directory does not have a Makefile, and we are
4007 # currently doing `.', then we add the link to CONFIG_CLEAN_FILES
4008 # in `.'s Makefile.in.
4009 my $local = basename ($link);
4010 my $fd = dirname ($link);
4011 if ($fd ne $relative_dir)
4012 {
4013 if ($relative_dir eq '.' && ! &is_make_dir ($fd))
4014 {
4015 $local = $link;
4016 }
4017 else
4018 {
4019 $local = undef;
4020 }
4021 }
4022 push @actual_other_files, $local if $local;
4023 }
4025 # Do not process sources that contain shell variables.
4026 if ($file !~ /\$/)
4027 {
4028 my $fd = dirname ($file);
4030 # Make sure the dist directory for each input file is created.
4031 # We only have to do this at the topmost level though.
4032 if ($relative_dir eq '.')
4033 {
4034 $dist_dirs{$fd} = 1;
4035 }
4037 # We distribute files that are in this directory.
4038 # At the top-level (`.') we also distribute files whose
4039 # directory does not have a Makefile.
4040 if (($fd eq $relative_dir)
4041 || ($relative_dir eq '.' && ! &is_make_dir ($fd)))
4042 {
4043 # The following will distribute $file as a side-effect when
4044 # it is appropriate (i.e., when $file is not already an output).
4045 # We do not need the result, just the side-effect.
4046 rewrite_inputs_into_dependencies ($link, $file);
4047 }
4048 }
4049 }
4051 # These files get removed by "make distclean".
4052 define_pretty_variable ('CONFIG_CLEAN_FILES', TRUE, INTERNAL,
4053 @actual_other_files);
4054 }
4056 # Handle C headers.
4057 sub handle_headers
4058 {
4059 my @r = &am_install_var ('-defaultdist', 'header', 'HEADERS', 'include',
4060 'oldinclude', 'pkginclude',
4061 'noinst', 'check');
4062 foreach (@r)
4063 {
4064 next unless $_->[1] =~ /\..*$/;
4065 &saw_extension ($&);
4066 }
4067 }
4069 sub handle_gettext
4070 {
4071 return if ! $seen_gettext || $relative_dir ne '.';
4073 my $subdirs = var 'SUBDIRS';
4075 if (! $subdirs)
4076 {
4077 err_ac "AM_GNU_GETTEXT used but SUBDIRS not defined";
4078 return;
4079 }
4081 # Perform some sanity checks to help users get the right setup.
4082 # We disable these tests when po/ doesn't exist in order not to disallow
4083 # unusual gettext setups.
4084 #
4085 # Bruno Haible:
4086 # | The idea is:
4087 # |
4088 # | 1) If a package doesn't have a directory po/ at top level, it
4089 # | will likely have multiple po/ directories in subpackages.
4090 # |
4091 # | 2) It is useful to warn for the absence of intl/ if AM_GNU_GETTEXT
4092 # | is used without 'external'. It is also useful to warn for the
4093 # | presence of intl/ if AM_GNU_GETTEXT([external]) is used. Both
4094 # | warnings apply only to the usual layout of packages, therefore
4095 # | they should both be disabled if no po/ directory is found at
4096 # | top level.
4098 if (-d 'po')
4099 {
4100 my @subdirs = $subdirs->value_as_list_recursive;
4102 msg_var ('syntax', $subdirs,
4103 "AM_GNU_GETTEXT used but `po' not in SUBDIRS")
4104 if ! grep ($_ eq 'po', @subdirs);
4106 # intl/ is not required when AM_GNU_GETTEXT is called with
4107 # the `external' option.
4108 msg_var ('syntax', $subdirs,
4109 "AM_GNU_GETTEXT used but `intl' not in SUBDIRS")
4110 if (! $seen_gettext_external
4111 && ! grep ($_ eq 'intl', @subdirs));
4113 # intl/ should not be used with AM_GNU_GETTEXT([external])
4114 msg_var ('syntax', $subdirs,
4115 "`intl' should not be in SUBDIRS when "
4116 . "AM_GNU_GETTEXT([external]) is used")
4117 if ($seen_gettext_external && grep ($_ eq 'intl', @subdirs));
4118 }
4120 require_file ($ac_gettext_location, GNU, 'ABOUT-NLS');
4121 }
4123 # Handle footer elements.
4124 sub handle_footer
4125 {
4126 # NOTE don't use define_pretty_variable here, because
4127 # $contents{...} is already defined.
4128 $output_vars .= 'SOURCES = ' . variable_value ('SOURCES') . "\n\n"
4129 if variable_value ('SOURCES');
4131 reject_rule ('.SUFFIXES',
4132 "use variable `SUFFIXES', not target `.SUFFIXES'");
4134 # Note: AIX 4.1 /bin/make will fail if any suffix rule appears
4135 # before .SUFFIXES. So we make sure that .SUFFIXES appears before
4136 # anything else, by sticking it right after the default: target.
4137 $output_header .= ".SUFFIXES:\n";
4138 my $suffixes = var 'SUFFIXES';
4139 my @suffixes = Automake::Rule::suffixes;
4140 if (@suffixes || $suffixes)
4141 {
4142 # Make sure SUFFIXES has unique elements. Sort them to ensure
4143 # the output remains consistent. However, $(SUFFIXES) is
4144 # always at the start of the list, unsorted. This is done
4145 # because make will choose rules depending on the ordering of
4146 # suffixes, and this lets the user have some control. Push
4147 # actual suffixes, and not $(SUFFIXES). Some versions of make
4148 # do not like variable substitutions on the .SUFFIXES line.
4149 my @user_suffixes = ($suffixes
4150 ? $suffixes->value_as_list_recursive : ());
4152 my %suffixes = map { $_ => 1 } @suffixes;
4153 delete @suffixes{@user_suffixes};
4155 $output_header .= (".SUFFIXES: "
4156 . join (' ', @user_suffixes, sort keys %suffixes)
4157 . "\n");
4158 }
4160 $output_trailer .= file_contents ('footer', new Automake::Location);
4161 }
4164 # Generate `make install' rules.
4165 sub handle_install ()
4166 {
4167 $output_rules .= &file_contents
4168 ('install',
4169 new Automake::Location,
4170 maybe_BUILT_SOURCES => (set_seen ('BUILT_SOURCES')
4171 ? (" \$(BUILT_SOURCES)\n"
4172 . "\t\$(MAKE) \$(AM_MAKEFLAGS)")
4173 : ''),
4174 'installdirs-local' => (user_phony_rule 'installdirs-local'
4175 ? ' installdirs-local' : ''),
4176 am__installdirs => variable_value ('am__installdirs') || '');
4177 }
4180 # Deal with all and all-am.
4181 sub handle_all ($)
4182 {
4183 my ($makefile) = @_;
4185 # Output `all-am'.
4187 # Put this at the beginning for the sake of non-GNU makes. This
4188 # is still wrong if these makes can run parallel jobs. But it is
4189 # right enough.
4190 unshift (@all, basename ($makefile));
4192 foreach my $spec (@config_headers)
4193 {
4194 my ($out, @ins) = split_config_file_spec ($spec);
4195 push (@all, basename ($out))
4196 if dirname ($out) eq $relative_dir;
4197 }
4199 # Install `all' hooks.
4200 push (@all, "all-local")
4201 if user_phony_rule "all-local";
4203 &pretty_print_rule ("all-am:", "\t\t", @all);
4204 &depend ('.PHONY', 'all-am', 'all');
4207 # Output `all'.
4209 my @local_headers = ();
4210 push @local_headers, '$(BUILT_SOURCES)'
4211 if var ('BUILT_SOURCES');
4212 foreach my $spec (@config_headers)
4213 {
4214 my ($out, @ins) = split_config_file_spec ($spec);
4215 push @local_headers, basename ($out)
4216 if dirname ($out) eq $relative_dir;
4217 }
4219 if (@local_headers)
4220 {
4221 # We need to make sure config.h is built before we recurse.
4222 # We also want to make sure that built sources are built
4223 # before any ordinary `all' targets are run. We can't do this
4224 # by changing the order of dependencies to the "all" because
4225 # that breaks when using parallel makes. Instead we handle
4226 # things explicitly.
4227 $output_all .= ("all: @local_headers"
4228 . "\n\t"
4229 . '$(MAKE) $(AM_MAKEFLAGS) '
4230 . (var ('SUBDIRS') ? 'all-recursive' : 'all-am')
4231 . "\n\n");
4232 }
4233 else
4234 {
4235 $output_all .= "all: " . (var ('SUBDIRS')
4236 ? 'all-recursive' : 'all-am') . "\n\n";
4237 }
4238 }
4241 # &do_check_merge_target ()
4242 # -------------------------
4243 # Handle check merge target specially.
4244 sub do_check_merge_target ()
4245 {
4246 # Include user-defined local form of target.
4247 push @check_tests, 'check-local'
4248 if user_phony_rule 'check-local';
4250 # In --cygnus mode, check doesn't depend on all.
4251 if (option 'cygnus')
4252 {
4253 # Just run the local check rules.
4254 pretty_print_rule ('check-am:', "\t\t", @check);
4255 }
4256 else
4257 {
4258 # The check target must depend on the local equivalent of
4259 # `all', to ensure all the primary targets are built. Then it
4260 # must build the local check rules.
4261 $output_rules .= "check-am: all-am\n";
4262 pretty_print_rule ("\t\$(MAKE) \$(AM_MAKEFLAGS)", "\t ",
4263 @check)
4264 if @check;
4265 }
4266 pretty_print_rule ("\t\$(MAKE) \$(AM_MAKEFLAGS)", "\t ",
4267 @check_tests)
4268 if @check_tests;
4270 depend '.PHONY', 'check', 'check-am';
4271 # Handle recursion. We have to honor BUILT_SOURCES like for `all:'.
4272 $output_rules .= ("check: "
4273 . (var ('BUILT_SOURCES')
4274 ? "\$(BUILT_SOURCES)\n\t\$(MAKE) \$(AM_MAKEFLAGS) "
4275 : '')
4276 . (var ('SUBDIRS') ? 'check-recursive' : 'check-am')
4277 . "\n");
4278 }
4280 # handle_clean ($MAKEFILE)
4281 # ------------------------
4282 # Handle all 'clean' targets.
4283 sub handle_clean ($)
4284 {
4285 my ($makefile) = @_;
4287 # Clean the files listed in user variables if they exist.
4288 $clean_files{'$(MOSTLYCLEANFILES)'} = MOSTLY_CLEAN
4289 if var ('MOSTLYCLEANFILES');
4290 $clean_files{'$(CLEANFILES)'} = CLEAN
4291 if var ('CLEANFILES');
4292 $clean_files{'$(DISTCLEANFILES)'} = DIST_CLEAN
4293 if var ('DISTCLEANFILES');
4294 $clean_files{'$(MAINTAINERCLEANFILES)'} = MAINTAINER_CLEAN
4295 if var ('MAINTAINERCLEANFILES');
4297 # Built sources are automatically removed by maintainer-clean.
4298 $clean_files{'$(BUILT_SOURCES)'} = MAINTAINER_CLEAN
4299 if var ('BUILT_SOURCES');
4301 # Compute a list of "rm"s to run for each target.
4302 my %rms = (MOSTLY_CLEAN, [],
4303 CLEAN, [],
4304 DIST_CLEAN, [],
4305 MAINTAINER_CLEAN, []);
4307 foreach my $file (keys %clean_files)
4308 {
4309 my $when = $clean_files{$file};
4310 prog_error 'invalid entry in %clean_files'
4311 unless exists $rms{$when};
4313 my $rm = "rm -f $file";
4314 # If file is a variable, make sure when don't call `rm -f' without args.
4315 $rm ="test -z \"$file\" || $rm"
4316 if ($file =~ /^\s*\$(\(.*\)|\{.*\})\s*$/);
4318 push @{$rms{$when}}, "\t-$rm\n";
4319 }
4321 $output_rules .= &file_contents
4322 ('clean',
4323 new Automake::Location,
4324 MOSTLYCLEAN_RMS => join ('', @{$rms{&MOSTLY_CLEAN}}),
4325 CLEAN_RMS => join ('', @{$rms{&CLEAN}}),
4326 DISTCLEAN_RMS => join ('', @{$rms{&DIST_CLEAN}}),
4327 MAINTAINER_CLEAN_RMS => join ('', @{$rms{&MAINTAINER_CLEAN}}),
4328 MAKEFILE => basename $makefile,
4329 );
4330 }
4333 # &target_cmp ($A, $B)
4334 # --------------------
4335 # Subroutine for &handle_factored_dependencies to let `.PHONY' be last.
4336 sub target_cmp
4337 {
4338 return 0
4339 if $a eq $b;
4340 return -1
4341 if $b eq '.PHONY';
4342 return 1
4343 if $a eq '.PHONY';
4344 return $a cmp $b;
4345 }
4348 # &handle_factored_dependencies ()
4349 # --------------------------------
4350 # Handle everything related to gathered targets.
4351 sub handle_factored_dependencies
4352 {
4353 # Reject bad hooks.
4354 foreach my $utarg ('uninstall-data-local', 'uninstall-data-hook',
4355 'uninstall-exec-local', 'uninstall-exec-hook')
4356 {
4357 my $x = $utarg;
4358 $x =~ s/(data|exec)-//;
4359 reject_rule ($utarg, "use `$x', not `$utarg'");
4360 }
4362 reject_rule ('install-local',
4363 "use `install-data-local' or `install-exec-local', "
4364 . "not `install-local'");
4366 reject_rule ('install-info-local',
4367 "`install-info-local' target defined but "
4368 . "`no-installinfo' option not in use")
4369 unless option 'no-installinfo';
4371 # Install the -local hooks.
4372 foreach (keys %dependencies)
4373 {
4374 # Hooks are installed on the -am targets.
4375 s/-am$// or next;
4376 depend ("$_-am", "$_-local")
4377 if user_phony_rule "$_-local";
4378 }
4380 # Install the -hook hooks.
4381 # FIXME: Why not be as liberal as we are with -local hooks?
4382 foreach ('install-exec', 'install-data', 'uninstall')
4383 {
4384 if (user_phony_rule "$_-hook")
4385 {
4386 $actions{"$_-am"} .=
4387 ("\t\@\$(NORMAL_INSTALL)\n"
4388 . "\t" . '$(MAKE) $(AM_MAKEFLAGS) ' . "$_-hook\n");
4389 }
4390 }
4392 # All the required targets are phony.
4393 depend ('.PHONY', keys %required_targets);
4395 # Actually output gathered targets.
4396 foreach (sort target_cmp keys %dependencies)
4397 {
4398 # If there is nothing about this guy, skip it.
4399 next
4400 unless (@{$dependencies{$_}}
4401 || $actions{$_}
4402 || $required_targets{$_});
4404 # Define gathered targets in undefined conditions.
4405 # FIXME: Right now we must handle .PHONY as an exception,
4406 # because people write things like
4407 # .PHONY: myphonytarget
4408 # to append dependencies. This would not work if Automake
4409 # refrained from defining its own .PHONY target as it does
4410 # with other overridden targets.
4411 my @undefined_conds = (TRUE,);
4412 if ($_ ne '.PHONY')
4413 {
4414 @undefined_conds =
4415 Automake::Rule::define ($_, 'internal',
4416 RULE_AUTOMAKE, TRUE, INTERNAL);
4417 }
4418 my @uniq_deps = uniq (sort @{$dependencies{$_}});
4419 foreach my $cond (@undefined_conds)
4420 {
4421 my $condstr = $cond->subst_string;
4422 &pretty_print_rule ("$condstr$_:", "$condstr\t", @uniq_deps);
4423 $output_rules .= $actions{$_} if defined $actions{$_};
4424 $output_rules .= "\n";
4425 }
4426 }
4427 }
4430 # &handle_tests_dejagnu ()
4431 # ------------------------
4432 sub handle_tests_dejagnu
4433 {
4434 push (@check_tests, 'check-DEJAGNU');
4435 $output_rules .= file_contents ('dejagnu', new Automake::Location);
4436 }
4439 # Handle TESTS variable and other checks.
4440 sub handle_tests
4441 {
4442 if (option 'dejagnu')
4443 {
4444 &handle_tests_dejagnu;
4445 }
4446 else
4447 {
4448 foreach my $c ('DEJATOOL', 'RUNTEST', 'RUNTESTFLAGS')
4449 {
4450 reject_var ($c, "`$c' defined but `dejagnu' not in "
4451 . "`AUTOMAKE_OPTIONS'");
4452 }
4453 }
4455 if (var ('TESTS'))
4456 {
4457 push (@check_tests, 'check-TESTS');
4458 $output_rules .= &file_contents ('check', new Automake::Location);
4459 }
4460 }
4462 # Handle Emacs Lisp.
4463 sub handle_emacs_lisp
4464 {
4465 my @elfiles = &am_install_var ('-candist', 'lisp', 'LISP',
4466 'lisp', 'noinst');
4468 return if ! @elfiles;
4470 define_pretty_variable ('am__ELFILES', TRUE, INTERNAL,
4471 map { $_->[1] } @elfiles);
4472 define_pretty_variable ('am__ELCFILES', TRUE, INTERNAL,
4473 '$(am__ELFILES:.el=.elc)');
4474 # This one can be overridden by users.
4475 define_pretty_variable ('ELCFILES', TRUE, INTERNAL, '$(LISP:.el=.elc)');
4477 push @all, '$(ELCFILES)';
4479 require_variables ($elfiles[0][0], "Emacs Lisp sources seen", TRUE,
4480 'EMACS', 'lispdir');
4481 require_conf_file ($elfiles[0][0], FOREIGN, 'elisp-comp');
4482 &define_variable ('elisp_comp', "$am_config_aux_dir/elisp-comp", INTERNAL);
4483 }
4485 # Handle Python
4486 sub handle_python
4487 {
4488 my @pyfiles = &am_install_var ('-defaultdist', 'python', 'PYTHON',
4489 'noinst');
4490 return if ! @pyfiles;
4492 require_variables ($pyfiles[0][0], "Python sources seen", TRUE, 'PYTHON');
4493 require_conf_file ($pyfiles[0][0], FOREIGN, 'py-compile');
4494 &define_variable ('py_compile', "$am_config_aux_dir/py-compile", INTERNAL);
4495 }
4497 # Handle Java.
4498 sub handle_java
4499 {
4500 my @sourcelist = &am_install_var ('-candist',
4501 'java', 'JAVA',
4502 'java', 'noinst', 'check');
4503 return if ! @sourcelist;
4505 my @prefix = am_primary_prefixes ('JAVA', 1,
4506 'java', 'noinst', 'check');
4508 my $dir;
4509 foreach my $curs (@prefix)
4510 {
4511 next
4512 if $curs eq 'EXTRA';
4514 err_var "${curs}_JAVA", "multiple _JAVA primaries in use"
4515 if defined $dir;
4516 $dir = $curs;
4517 }
4520 push (@all, 'class' . $dir . '.stamp');
4521 }
4524 # Handle some of the minor options.
4525 sub handle_minor_options
4526 {
4527 if (option 'readme-alpha')
4528 {
4529 if ($relative_dir eq '.')
4530 {
4531 if ($package_version !~ /^$GNITS_VERSION_PATTERN$/)
4532 {
4533 msg ('error-gnits', $package_version_location,
4534 "version `$package_version' doesn't follow " .
4535 "Gnits standards");
4536 }
4537 if (defined $1 && -f 'README-alpha')
4538 {
4539 # This means we have an alpha release. See
4540 # GNITS_VERSION_PATTERN for details.
4541 push_dist_common ('README-alpha');
4542 }
4543 }
4544 }
4545 }
4547 ################################################################
4549 # ($OUTPUT, @INPUTS)
4550 # &split_config_file_spec ($SPEC)
4551 # -------------------------------
4552 # Decode the Autoconf syntax for config files (files, headers, links
4553 # etc.).
4554 sub split_config_file_spec ($)
4555 {
4556 my ($spec) = @_;
4557 my ($output, @inputs) = split (/:/, $spec);
4559 push @inputs, "$output.in"
4560 unless @inputs;
4562 return ($output, @inputs);
4563 }
4565 # $input
4566 # locate_am (@POSSIBLE_SOURCES)
4567 # -----------------------------
4568 # AC_CONFIG_FILES allow specifications such as Makefile:top.in:mid.in:bot.in
4569 # This functions returns the first *.in file for which a *.am exists.
4570 # It returns undef otherwise.
4571 sub locate_am (@)
4572 {
4573 my (@rest) = @_;
4574 my $input;
4575 foreach my $file (@rest)
4576 {
4577 if (($file =~ /^(.*)\.in$/) && -f "$1.am")
4578 {
4579 $input = $file;
4580 last;
4581 }
4582 }
4583 return $input;
4584 }
4586 my %make_list;
4588 # &scan_autoconf_config_files ($WHERE, $CONFIG-FILES)
4589 # ---------------------------------------------------
4590 # Study $CONFIG-FILES which is the first argument to AC_CONFIG_FILES
4591 # (or AC_OUTPUT).
4592 sub scan_autoconf_config_files ($$)
4593 {
4594 my ($where, $config_files) = @_;
4596 # Look at potential Makefile.am's.
4597 foreach (split ' ', $config_files)
4598 {
4599 # Must skip empty string for Perl 4.
4600 next if $_ eq "\\" || $_ eq '';
4602 # Handle $local:$input syntax.
4603 my ($local, @rest) = split (/:/);
4604 @rest = ("$local.in",) unless @rest;
4605 my $input = locate_am @rest;
4606 if ($input)
4607 {
4608 # We have a file that automake should generate.
4609 $make_list{$input} = join (':', ($local, @rest));
4610 }
4611 else
4612 {
4613 # We have a file that automake should cause to be
4614 # rebuilt, but shouldn't generate itself.
4615 push (@other_input_files, $_);
4616 }
4617 $ac_config_files_location{$local} = $where;
4618 }
4619 }
4622 # &scan_autoconf_traces ($FILENAME)
4623 # ---------------------------------
4624 sub scan_autoconf_traces ($)
4625 {
4626 my ($filename) = @_;
4628 # Macros to trace, with their minimal number of arguments.
4629 #
4630 # IMPORTANT: If you add a macro here, you should also add this macro
4631 # ========= to Automake-preselection in autoconf/lib/autom4te.in.
4632 my %traced = (
4633 AC_CANONICAL_HOST => 0,
4634 AC_CANONICAL_SYSTEM => 0,
4635 AC_CONFIG_AUX_DIR => 1,
4636 AC_CONFIG_FILES => 1,
4637 AC_CONFIG_HEADERS => 1,
4638 AC_CONFIG_LINKS => 1,
4639 AC_INIT => 0,
4640 AC_LIBSOURCE => 1,
4641 AC_SUBST => 1,
4642 AM_AUTOMAKE_VERSION => 1,
4643 AM_CONDITIONAL => 2,
4644 AM_ENABLE_MULTILIB => 0,
4645 AM_GNU_GETTEXT => 0,
4646 AM_INIT_AUTOMAKE => 0,
4647 AM_MAINTAINER_MODE => 0,
4648 AM_PROG_CC_C_O => 0,
4649 LT_SUPPORTED_TAG => 1,
4650 _LT_AC_TAGCONFIG => 0,
4651 m4_include => 1,
4652 m4_sinclude => 1,
4653 sinclude => 1,
4654 );
4656 my $traces = ($ENV{AUTOCONF} || 'autoconf') . " ";
4658 # Use a separator unlikely to be used, not `:', the default, which
4659 # has a precise meaning for AC_CONFIG_FILES and so on.
4660 $traces .= join (' ',
4661 map { "--trace=$_" . ':\$f:\$l::\$n::\${::}%' }
4662 (keys %traced));
4664 my $tracefh = new Automake::XFile ("$traces $filename |");
4665 verb "reading $traces";
4667 while ($_ = $tracefh->getline)
4668 {
4669 chomp;
4670 my ($here, @args) = split (/::/);
4671 my $where = new Automake::Location $here;
4672 my $macro = $args[0];
4674 prog_error ("unrequested trace `$macro'")
4675 unless exists $traced{$macro};
4677 # Skip and diagnose malformed calls.
4678 if ($#args < $traced{$macro})
4679 {
4680 msg ('syntax', $where, "not enough arguments for $macro");
4681 next;
4682 }
4684 # Alphabetical ordering please.
4685 if ($macro eq 'AC_CANONICAL_HOST')
4686 {
4687 if (! $seen_canonical)
4688 {
4689 $seen_canonical = AC_CANONICAL_HOST;
4690 $canonical_location = $where;
4691 }
4692 }
4693 elsif ($macro eq 'AC_CANONICAL_SYSTEM')
4694 {
4695 $seen_canonical = AC_CANONICAL_SYSTEM;
4696 $canonical_location = $where;
4697 }
4698 elsif ($macro eq 'AC_CONFIG_AUX_DIR')
4699 {
4700 if ($seen_init_automake)
4701 {
4702 error ($where, "AC_CONFIG_AUX_DIR must be called before "
4703 . "AM_INIT_AUTOMAKE...", partial => 1);
4704 error ($seen_init_automake, "... AM_INIT_AUTOMAKE called here");
4705 }
4706 $config_aux_dir = $args[1];
4707 $config_aux_dir_set_in_configure_ac = 1;
4708 $relative_dir = '.';
4709 check_directory ($config_aux_dir, $where);
4710 }
4711 elsif ($macro eq 'AC_CONFIG_FILES')
4712 {
4713 # Look at potential Makefile.am's.
4714 scan_autoconf_config_files ($where, $args[1]);
4715 }
4716 elsif ($macro eq 'AC_CONFIG_HEADERS')
4717 {
4718 foreach my $spec (split (' ', $args[1]))
4719 {
4720 my ($dest, @src) = split (':', $spec);
4721 $ac_config_files_location{$dest} = $where;
4722 push @config_headers, $spec;
4723 }
4724 }
4725 elsif ($macro eq 'AC_CONFIG_LINKS')
4726 {
4727 foreach my $spec (split (' ', $args[1]))
4728 {
4729 my ($dest, $src) = split (':', $spec);
4730 $ac_config_files_location{$dest} = $where;
4731 push @config_links, $spec;
4732 }
4733 }
4734 elsif ($macro eq 'AC_INIT')
4735 {
4736 if (defined $args[2])
4737 {
4738 $package_version = $args[2];
4739 $package_version_location = $where;
4740 }
4741 }
4742 elsif ($macro eq 'AC_LIBSOURCE')
4743 {
4744 $libsources{$args[1]} = $here;
4745 }
4746 elsif ($macro eq 'AC_SUBST')
4747 {
4748 # Just check for alphanumeric in AC_SUBST. If you do
4749 # AC_SUBST(5), then too bad.
4750 $configure_vars{$args[1]} = $where
4751 if $args[1] =~ /^\w+$/;
4752 }
4753 elsif ($macro eq 'AM_AUTOMAKE_VERSION')
4754 {
4755 error ($where,
4756 "version mismatch. This is Automake $VERSION,\n" .
4757 "but the definition used by this AM_INIT_AUTOMAKE\n" .
4758 "comes from Automake $args[1]. You should recreate\n" .
4759 "aclocal.m4 with aclocal and run automake again.\n",
4760 # $? = 63 is used to indicate version mismatch to missing.
4761 exit_code => 63)
4762 if $VERSION ne $args[1];
4764 $seen_automake_version = 1;
4765 }
4766 elsif ($macro eq 'AM_CONDITIONAL')
4767 {
4768 $configure_cond{$args[1]} = $where;
4769 }
4770 elsif ($macro eq 'AM_ENABLE_MULTILIB')
4771 {
4772 $seen_multilib = $where;
4773 }
4774 elsif ($macro eq 'AM_GNU_GETTEXT')
4775 {
4776 $seen_gettext = $where;
4777 $ac_gettext_location = $where;
4778 $seen_gettext_external = grep ($_ eq 'external', @args);
4779 }
4780 elsif ($macro eq 'AM_INIT_AUTOMAKE')
4781 {
4782 $seen_init_automake = $where;
4783 if (defined $args[2])
4784 {
4785 $package_version = $args[2];
4786 $package_version_location = $where;
4787 }
4788 elsif (defined $args[1])
4789 {
4790 exit $exit_code
4791 if (process_global_option_list ($where,
4792 split (' ', $args[1])));
4793 }
4794 }
4795 elsif ($macro eq 'AM_MAINTAINER_MODE')
4796 {
4797 $seen_maint_mode = $where;
4798 }
4799 elsif ($macro eq 'AM_PROG_CC_C_O')
4800 {
4801 $seen_cc_c_o = $where;
4802 }
4803 elsif ($macro eq 'm4_include'
4804 || $macro eq 'm4_sinclude'
4805 || $macro eq 'sinclude')
4806 {
4807 # Some modified versions of Autoconf don't use
4808 # forzen files. Consequently it's possible that we see all
4809 # m4_include's performed during Autoconf's startup.
4810 # Obviously we don't want to distribute Autoconf's files
4811 # so we skip absolute filenames here.
4812 push @configure_deps, '$(top_srcdir)/' . $args[1]
4813 unless $here =~ m,^(?:\w:)?[\\/],;
4814 # Keep track of the greatest timestamp.
4815 if (-e $args[1])
4816 {
4817 my $mtime = mtime $args[1];
4818 $configure_deps_greatest_timestamp = $mtime
4819 if $mtime > $configure_deps_greatest_timestamp;
4820 }
4821 }
4822 elsif ($macro eq 'LT_SUPPORTED_TAG')
4823 {
4824 $libtool_tags{$args[1]} = 1;
4825 }
4826 elsif ($macro eq '_LT_AC_TAGCONFIG')
4827 {
4828 # _LT_AC_TAGCONFIG is an old macro present in Libtool 1.5.
4829 # We use it to detect whether tags are supported. Our
4830 # prefered interface is LT_SUPPORTED_TAG, but it was
4831 # introduced in Libtool 1.6.
4832 if (0 == keys %libtool_tags)
4833 {
4834 # Hardcode the tags supported by Libtool 1.5.
4835 %libtool_tags = (CC => 1, CXX => 1, GCJ => 1, F77 => 1);
4836 }
4837 }
4838 }
4840 $tracefh->close;
4841 }
4844 # &scan_autoconf_files ()
4845 # -----------------------
4846 # Check whether we use `configure.ac' or `configure.in'.
4847 # Scan it (and possibly `aclocal.m4') for interesting things.
4848 # We must scan aclocal.m4 because there might be AC_SUBSTs and such there.
4849 sub scan_autoconf_files ()
4850 {
4851 # Reinitialize libsources here. This isn't really necessary,
4852 # since we currently assume there is only one configure.ac. But
4853 # that won't always be the case.
4854 %libsources = ();
4856 # Keep track of the youngest configure dependency.
4857 $configure_deps_greatest_timestamp = mtime $configure_ac;
4858 if (-e 'aclocal.m4')
4859 {
4860 my $mtime = mtime 'aclocal.m4';
4861 $configure_deps_greatest_timestamp = $mtime
4862 if $mtime > $configure_deps_greatest_timestamp;
4863 }
4865 scan_autoconf_traces ($configure_ac);
4867 @configure_input_files = sort keys %make_list;
4868 # Set input and output files if not specified by user.
4869 if (! @input_files)
4870 {
4871 @input_files = @configure_input_files;
4872 %output_files = %make_list;
4873 }
4876 if (! $seen_init_automake)
4877 {
4878 err_ac ("no proper invocation of AM_INIT_AUTOMAKE was found.\nYou "
4879 . "should verify that $configure_ac invokes AM_INIT_AUTOMAKE,"
4880 . "\nthat aclocal.m4 is present in the top-level directory,\n"
4881 . "and that aclocal.m4 was recently regenerated "
4882 . "(using aclocal).");
4883 }
4884 else
4885 {
4886 if (! $seen_automake_version)
4887 {
4888 if (-f 'aclocal.m4')
4889 {
4890 error ($seen_init_automake,
4891 "your implementation of AM_INIT_AUTOMAKE comes from " .
4892 "an\nold Automake version. You should recreate " .
4893 "aclocal.m4\nwith aclocal and run automake again.\n",
4894 # $? = 63 is used to indicate version mismatch to missing.
4895 exit_code => 63);
4896 }
4897 else
4898 {
4899 error ($seen_init_automake,
4900 "no proper implementation of AM_INIT_AUTOMAKE was " .
4901 "found,\nprobably because aclocal.m4 is missing...\n" .
4902 "You should run aclocal to create this file, then\n" .
4903 "run automake again.\n");
4904 }
4905 }
4906 }
4908 locate_aux_dir ();
4910 # Reorder @input_files so that the Makefile that distributes aux
4911 # files is processed last. This is important because each directory
4912 # can require auxiliary scripts and we should wait until they have
4913 # been installed before distributing them.
4915 # The Makefile.in that distribute the aux files is the one in
4916 # $config_aux_dir or the top-level Makefile.
4917 my $auxdirdist = is_make_dir ($config_aux_dir) ? $config_aux_dir : '.';
4918 my @new_input_files = ();
4919 while (@input_files)
4920 {
4921 my $in = pop @input_files;
4922 my @ins = split (/:/, $output_files{$in});
4923 if (dirname ($ins[0]) eq $auxdirdist)
4924 {
4925 push @new_input_files, $in;
4926 $automake_will_process_aux_dir = 1;
4927 }
4928 else
4929 {
4930 unshift @new_input_files, $in;
4931 }
4932 }
4933 @input_files = @new_input_files;
4935 # If neither the auxdir/Makefile nor the ./Makefile are generated
4936 # by Automake, we won't distribute the aux files anyway. Assume
4937 # the user know what (s)he does, and pretend we will distribute
4938 # them to disable the error in require_file_internal.
4939 $automake_will_process_aux_dir = 1 if ! is_make_dir ($auxdirdist);
4941 # Look for some files we need. Always check for these. This
4942 # check must be done for every run, even those where we are only
4943 # looking at a subdir Makefile. We must set relative_dir for
4944 # maybe_push_required_file to work.
4945 $relative_dir = '.';
4946 require_conf_file ($configure_ac, FOREIGN, 'install-sh', 'missing');
4947 err_am "`install.sh' is an anachronism; use `install-sh' instead"
4948 if -f $config_aux_dir . '/install.sh';
4950 # Preserve dist_common for later.
4951 $configure_dist_common = variable_value ('DIST_COMMON') || '';
4953 }
4955 ################################################################
4957 # Set up for Cygnus mode.
4958 sub check_cygnus
4959 {
4960 my $cygnus = option 'cygnus';
4961 return unless $cygnus;
4963 set_strictness ('foreign');
4964 set_option ('no-installinfo', $cygnus);
4965 set_option ('no-dependencies', $cygnus);
4966 set_option ('no-dist', $cygnus);
4968 err_ac "`AM_MAINTAINER_MODE' required when --cygnus specified"
4969 if !$seen_maint_mode;
4970 }
4972 # Do any extra checking for GNU standards.
4973 sub check_gnu_standards
4974 {
4975 if ($relative_dir eq '.')
4976 {
4977 # In top level (or only) directory.
4978 require_file ("$am_file.am", GNU,
4979 qw/INSTALL NEWS README AUTHORS ChangeLog/);
4981 # Accept one of these three licenses; default to COPYING.
4982 # Make sure we do not overwrite an existing license.
4983 my $license;
4984 foreach (qw /COPYING COPYING.LIB COPYING.LESSER/)
4985 {
4986 if (-f $_)
4987 {
4988 $license = $_;
4989 last;
4990 }
4991 }
4992 require_file ("$am_file.am", GNU, 'COPYING')
4993 unless $license;
4994 }
4996 for my $opt ('no-installman', 'no-installinfo')
4997 {
4998 msg ('error-gnu', option $opt,
4999 "option `$opt' disallowed by GNU standards")
5000 if option $opt;
5001 }
5002 }
5004 # Do any extra checking for GNITS standards.
5005 sub check_gnits_standards
5006 {
5007 if ($relative_dir eq '.')
5008 {
5009 # In top level (or only) directory.
5010 require_file ("$am_file.am", GNITS, 'THANKS');
5011 }
5012 }
5014 ################################################################
5015 #
5016 # Functions to handle files of each language.
5018 # Each `lang_X_rewrite($DIRECTORY, $BASE, $EXT)' function follows a
5019 # simple formula: Return value is LANG_SUBDIR if the resulting object
5020 # file should be in a subdir if the source file is, LANG_PROCESS if
5021 # file is to be dealt with, LANG_IGNORE otherwise.
5023 # Much of the actual processing is handled in
5024 # handle_single_transform. These functions exist so that
5025 # auxiliary information can be recorded for a later cleanup pass.
5026 # Note that the calls to these functions are computed, so don't bother
5027 # searching for their precise names in the source.
5029 # This is just a convenience function that can be used to determine
5030 # when a subdir object should be used.
5031 sub lang_sub_obj
5032 {
5033 return option 'subdir-objects' ? LANG_SUBDIR : LANG_PROCESS;
5034 }
5036 # Rewrite a single C source file.
5037 sub lang_c_rewrite
5038 {
5039 my ($directory, $base, $ext) = @_;
5041 if (option 'ansi2knr' && $base =~ /_$/)
5042 {
5043 # FIXME: include line number in error.
5044 err_am "C source file `$base.c' would be deleted by ansi2knr rules";
5045 }
5047 my $r = LANG_PROCESS;
5048 if (option 'subdir-objects')
5049 {
5050 $r = LANG_SUBDIR;
5051 $base = $directory . '/' . $base
5052 unless $directory eq '.' || $directory eq '';
5054 err_am ("C objects in subdir but `AM_PROG_CC_C_O' "
5055 . "not in `$configure_ac'",
5056 uniq_scope => US_GLOBAL)
5057 unless $seen_cc_c_o;
5059 require_conf_file ("$am_file.am", FOREIGN, 'compile');
5061 # In this case we already have the directory information, so
5062 # don't add it again.
5063 $de_ansi_files{$base} = '';
5064 }
5065 else
5066 {
5067 $de_ansi_files{$base} = (($directory eq '.' || $directory eq '')
5068 ? ''
5069 : "$directory/");
5070 }
5072 return $r;
5073 }
5075 # Rewrite a single C++ source file.
5076 sub lang_cxx_rewrite
5077 {
5078 return &lang_sub_obj;
5079 }
5081 # Rewrite a single header file.
5082 sub lang_header_rewrite
5083 {
5084 # Header files are simply ignored.
5085 return LANG_IGNORE;
5086 }
5088 # Rewrite a single yacc file.
5089 sub lang_yacc_rewrite
5090 {
5091 my ($directory, $base, $ext) = @_;
5093 my $r = &lang_sub_obj;
5094 (my $newext = $ext) =~ tr/y/c/;
5095 return ($r, $newext);
5096 }
5098 # Rewrite a single yacc++ file.
5099 sub lang_yaccxx_rewrite
5100 {
5101 my ($directory, $base, $ext) = @_;
5103 my $r = &lang_sub_obj;
5104 (my $newext = $ext) =~ tr/y/c/;
5105 return ($r, $newext);
5106 }
5108 # Rewrite a single lex file.
5109 sub lang_lex_rewrite
5110 {
5111 my ($directory, $base, $ext) = @_;
5113 my $r = &lang_sub_obj;
5114 (my $newext = $ext) =~ tr/l/c/;
5115 return ($r, $newext);
5116 }
5118 # Rewrite a single lex++ file.
5119 sub lang_lexxx_rewrite
5120 {
5121 my ($directory, $base, $ext) = @_;
5123 my $r = &lang_sub_obj;
5124 (my $newext = $ext) =~ tr/l/c/;
5125 return ($r, $newext);
5126 }
5128 # Rewrite a single assembly file.
5129 sub lang_asm_rewrite
5130 {
5131 return &lang_sub_obj;
5132 }
5134 # Rewrite a single Fortran 77 file.
5135 sub lang_f77_rewrite
5136 {
5137 return LANG_PROCESS;
5138 }
5140 # Rewrite a single Fortran file.
5141 sub lang_fc_rewrite
5142 {
5143 return LANG_PROCESS;
5144 }
5146 # Rewrite a single preprocessed Fortran file.
5147 sub lang_ppfc_rewrite
5148 {
5149 return LANG_PROCESS;
5150 }
5152 # Rewrite a single preprocessed Fortran 77 file.
5153 sub lang_ppf77_rewrite
5154 {
5155 return LANG_PROCESS;
5156 }
5158 # Rewrite a single ratfor file.
5159 sub lang_ratfor_rewrite
5160 {
5161 return LANG_PROCESS;
5162 }
5164 # Rewrite a single Objective C file.
5165 sub lang_objc_rewrite
5166 {
5167 return &lang_sub_obj;
5168 }
5170 # Rewrite a single Java file.
5171 sub lang_java_rewrite
5172 {
5173 return LANG_SUBDIR;
5174 }
5176 # The lang_X_finish functions are called after all source file
5177 # processing is done. Each should handle defining rules for the
5178 # language, etc. A finish function is only called if a source file of
5179 # the appropriate type has been seen.
5181 sub lang_c_finish
5182 {
5183 # Push all libobjs files onto de_ansi_files. We actually only
5184 # push files which exist in the current directory, and which are
5185 # genuine source files.
5186 foreach my $file (keys %libsources)
5187 {
5188 if ($file =~ /^(.*)\.[cly]$/ && -f "$relative_dir/$file")
5189 {
5190 $de_ansi_files{$1} = ''
5191 }
5192 }
5194 if (option 'ansi2knr' && keys %de_ansi_files)
5195 {
5196 # Make all _.c files depend on their corresponding .c files.
5197 my @objects;
5198 foreach my $base (sort keys %de_ansi_files)
5199 {
5200 # Each _.c file must depend on ansi2knr; otherwise it
5201 # might be used in a parallel build before it is built.
5202 # We need to support files in the srcdir and in the build
5203 # dir (because these files might be auto-generated. But
5204 # we can't use $< -- some makes only define $< during a
5205 # suffix rule.
5206 my $ansfile = $de_ansi_files{$base} . $base . '.c';
5207 $output_rules .= ($base . "_.c: $ansfile \$(ANSI2KNR)\n\t"
5208 . '$(CPP) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS) $(CPPFLAGS) '
5209 . '`if test -f $(srcdir)/' . $ansfile
5210 . '; then echo $(srcdir)/' . $ansfile
5211 . '; else echo ' . $ansfile . '; fi` '
5212 . "| sed 's/^# \\([0-9]\\)/#line \\1/' "
5213 . '| $(ANSI2KNR) > $@'
5214 # If ansi2knr fails then we shouldn't
5215 # create the _.c file
5216 . " || rm -f \$\@\n");
5217 push (@objects, $base . '_.$(OBJEXT)');
5218 push (@objects, $base . '_.lo')
5219 if var ('LIBTOOL');
5221 # Explicitly clean the _.c files if they are in a
5222 # subdirectory. (In the current directory they get erased
5223 # by a `rm -f *_.c' rule.)
5224 $clean_files{$base . '_.c'} = MOSTLY_CLEAN
5225 if dirname ($base) ne '.';
5226 }
5228 # Make all _.o (and _.lo) files depend on ansi2knr.
5229 # Use a sneaky little hack to make it print nicely.
5230 &pretty_print_rule ('', '', @objects, ':', '$(ANSI2KNR)');
5231 }
5232 }
5234 # This is a yacc helper which is called whenever we have decided to
5235 # compile a yacc file.
5236 sub lang_yacc_target_hook
5237 {
5238 my ($self, $aggregate, $output, $input, %transform) = @_;
5240 my $flag = $aggregate . "_YFLAGS";
5241 my $flagvar = var $flag;
5242 my $YFLAGSvar = var 'YFLAGS';
5243 if (($flagvar && $flagvar->variable_value =~ /$DASH_D_PATTERN/o)
5244 || ($YFLAGSvar && $YFLAGSvar->variable_value =~ /$DASH_D_PATTERN/o))
5245 {
5246 (my $output_base = $output) =~ s/$KNOWN_EXTENSIONS_PATTERN$//;
5247 my $header = $output_base . '.h';
5249 # Found a `-d' that applies to the compilation of this file.
5250 # Add a dependency for the generated header file, and arrange
5251 # for that file to be included in the distribution.
5252 foreach my $cond (Automake::Rule::define (${header}, 'internal',
5253 RULE_AUTOMAKE, TRUE,
5254 INTERNAL))
5255 {
5256 my $condstr = $cond->subst_string;
5257 $output_rules .= ("$condstr${header}: $output\n"
5258 # Recover from removal of $header
5259 . "$condstr\t\@if test ! -f \$@; then \\\n"
5260 . "$condstr\t rm -f $output; \\\n"
5261 . "$condstr\t \$(MAKE) $output; \\\n"
5262 . "$condstr\telse :; fi\n");
5263 }
5264 # Distribute the generated file, unless its .y source was
5265 # listed in a nodist_ variable. (&handle_source_transform
5266 # will set DIST_SOURCE.)
5267 &push_dist_common ($header)
5268 if $transform{'DIST_SOURCE'};
5270 # If the files are built in the build directory, then we want
5271 # to remove them with `make clean'. If they are in srcdir
5272 # they shouldn't be touched. However, we can't determine this
5273 # statically, and the GNU rules say that yacc/lex output files
5274 # should be removed by maintainer-clean. So that's what we
5275 # do.
5276 $clean_files{$header} = MAINTAINER_CLEAN;
5277 }
5278 # Erase $OUTPUT on `make maintainer-clean' (by GNU standards).
5279 # See the comment above for $HEADER.
5280 $clean_files{$output} = MAINTAINER_CLEAN;
5281 }
5283 # This is a lex helper which is called whenever we have decided to
5284 # compile a lex file.
5285 sub lang_lex_target_hook
5286 {
5287 my ($self, $aggregate, $output, $input) = @_;
5288 # If the files are built in the build directory, then we want to
5289 # remove them with `make clean'. If they are in srcdir they
5290 # shouldn't be touched. However, we can't determine this
5291 # statically, and the GNU rules say that yacc/lex output files
5292 # should be removed by maintainer-clean. So that's what we do.
5293 $clean_files{$output} = MAINTAINER_CLEAN;
5294 }
5296 # This is a helper for both lex and yacc.
5297 sub yacc_lex_finish_helper
5298 {
5299 return if defined $language_scratch{'lex-yacc-done'};
5300 $language_scratch{'lex-yacc-done'} = 1;
5302 # If there is more than one distinct yacc (resp lex) source file
5303 # in a given directory, then the `ylwrap' program is required to
5304 # allow parallel builds to work correctly. FIXME: for now, no
5305 # line number.
5306 require_conf_file ($configure_ac, FOREIGN, 'ylwrap');
5307 if ($config_aux_dir_set_in_configure_ac)
5308 {
5309 &define_variable ('YLWRAP', "$am_config_aux_dir/ylwrap", INTERNAL);
5310 }
5311 else
5312 {
5313 &define_variable ('YLWRAP', '$(top_srcdir)/ylwrap', INTERNAL);
5314 }
5315 }
5317 sub lang_yacc_finish
5318 {
5319 return if defined $language_scratch{'yacc-done'};
5320 $language_scratch{'yacc-done'} = 1;
5322 reject_var 'YACCFLAGS', "`YACCFLAGS' obsolete; use `YFLAGS' instead";
5324 &yacc_lex_finish_helper
5325 if count_files_for_language ('yacc') > 1;
5326 }
5329 sub lang_lex_finish
5330 {
5331 return if defined $language_scratch{'lex-done'};
5332 $language_scratch{'lex-done'} = 1;
5334 &yacc_lex_finish_helper
5335 if count_files_for_language ('lex') > 1;
5336 }
5339 # Given a hash table of linker names, pick the name that has the most
5340 # precedence. This is lame, but something has to have global
5341 # knowledge in order to eliminate the conflict. Add more linkers as
5342 # required.
5343 sub resolve_linker
5344 {
5345 my (%linkers) = @_;
5347 foreach my $l (qw(GCJLINK CXXLINK F77LINK FCLINK OBJCLINK))
5348 {
5349 return $l if defined $linkers{$l};
5350 }
5351 return 'LINK';
5352 }
5354 # Called to indicate that an extension was used.
5355 sub saw_extension
5356 {
5357 my ($ext) = @_;
5358 if (! defined $extension_seen{$ext})
5359 {
5360 $extension_seen{$ext} = 1;
5361 }
5362 else
5363 {
5364 ++$extension_seen{$ext};
5365 }
5366 }
5368 # Return the number of files seen for a given language. Knows about
5369 # special cases we care about. FIXME: this is hideous. We need
5370 # something that involves real language objects. For instance yacc
5371 # and yaccxx could both derive from a common yacc class which would
5372 # know about the strange ylwrap requirement. (Or better yet we could
5373 # just not support legacy yacc!)
5374 sub count_files_for_language
5375 {
5376 my ($name) = @_;
5378 my @names;
5379 if ($name eq 'yacc' || $name eq 'yaccxx')
5380 {
5381 @names = ('yacc', 'yaccxx');
5382 }
5383 elsif ($name eq 'lex' || $name eq 'lexxx')
5384 {
5385 @names = ('lex', 'lexxx');
5386 }
5387 else
5388 {
5389 @names = ($name);
5390 }
5392 my $r = 0;
5393 foreach $name (@names)
5394 {
5395 my $lang = $languages{$name};
5396 foreach my $ext (@{$lang->extensions})
5397 {
5398 $r += $extension_seen{$ext}
5399 if defined $extension_seen{$ext};
5400 }
5401 }
5403 return $r
5404 }
5406 # Called to ask whether source files have been seen . If HEADERS is 1,
5407 # headers can be included.
5408 sub saw_sources_p
5409 {
5410 my ($headers) = @_;
5412 # count all the sources
5413 my $count = 0;
5414 foreach my $val (values %extension_seen)
5415 {
5416 $count += $val;
5417 }
5419 if (!$headers)
5420 {
5421 $count -= count_files_for_language ('header');
5422 }
5424 return $count > 0;
5425 }
5428 # register_language (%ATTRIBUTE)
5429 # ------------------------------
5430 # Register a single language.
5431 # Each %ATTRIBUTE is of the form ATTRIBUTE => VALUE.
5432 sub register_language (%)
5433 {
5434 my (%option) = @_;
5436 # Set the defaults.
5437 $option{'ansi'} = 0
5438 unless defined $option{'ansi'};
5439 $option{'autodep'} = 'no'
5440 unless defined $option{'autodep'};
5441 $option{'linker'} = ''
5442 unless defined $option{'linker'};
5443 $option{'flags'} = []
5444 unless defined $option{'flags'};
5445 $option{'output_extensions'} = sub { return ( '.$(OBJEXT)', '.lo' ) }
5446 unless defined $option{'output_extensions'};
5448 my $lang = new Language (%option);
5450 # Fill indexes.
5451 $extension_map{$_} = $lang->name foreach @{$lang->extensions};
5452 $languages{$lang->name} = $lang;
5454 # Update the pattern of known extensions.
5455 accept_extensions (@{$lang->extensions});
5457 # Upate the $suffix_rule map.
5458 foreach my $suffix (@{$lang->extensions})
5459 {
5460 foreach my $dest (&{$lang->output_extensions} ($suffix))
5461 {
5462 register_suffix_rule (INTERNAL, $suffix, $dest);
5463 }
5464 }
5465 }
5467 # derive_suffix ($EXT, $OBJ)
5468 # --------------------------
5469 # This function is used to find a path from a user-specified suffix $EXT
5470 # to $OBJ or to some other suffix we recognize internally, e.g. `cc'.
5471 sub derive_suffix ($$)
5472 {
5473 my ($source_ext, $obj) = @_;
5475 while (! $extension_map{$source_ext}
5476 && $source_ext ne $obj
5477 && exists $suffix_rules->{$source_ext}
5478 && exists $suffix_rules->{$source_ext}{$obj})
5479 {
5480 $source_ext = $suffix_rules->{$source_ext}{$obj}[0];
5481 }
5483 return $source_ext;
5484 }
5487 ################################################################
5489 # Pretty-print something and append to output_rules.
5490 sub pretty_print_rule
5491 {
5492 $output_rules .= &makefile_wrap (@_);
5493 }
5496 ################################################################
5499 ## -------------------------------- ##
5500 ## Handling the conditional stack. ##
5501 ## -------------------------------- ##
5504 # $STRING
5505 # make_conditional_string ($NEGATE, $COND)
5506 # ----------------------------------------
5507 sub make_conditional_string ($$)
5508 {
5509 my ($negate, $cond) = @_;
5510 $cond = "${cond}_TRUE"
5511 unless $cond =~ /^TRUE|FALSE$/;
5512 $cond = Automake::Condition::conditional_negate ($cond)
5513 if $negate;
5514 return $cond;
5515 }
5518 # $COND
5519 # cond_stack_if ($NEGATE, $COND, $WHERE)
5520 # --------------------------------------
5521 sub cond_stack_if ($$$)
5522 {
5523 my ($negate, $cond, $where) = @_;
5525 error $where, "$cond does not appear in AM_CONDITIONAL"
5526 if ! $configure_cond{$cond} && $cond !~ /^TRUE|FALSE$/;
5528 push (@cond_stack, make_conditional_string ($negate, $cond));
5530 return new Automake::Condition (@cond_stack);
5531 }
5534 # $COND
5535 # cond_stack_else ($NEGATE, $COND, $WHERE)
5536 # ----------------------------------------
5537 sub cond_stack_else ($$$)
5538 {
5539 my ($negate, $cond, $where) = @_;
5541 if (! @cond_stack)
5542 {
5543 error $where, "else without if";
5544 return FALSE;
5545 }
5547 $cond_stack[$#cond_stack] =
5548 Automake::Condition::conditional_negate ($cond_stack[$#cond_stack]);
5550 # If $COND is given, check against it.
5551 if (defined $cond)
5552 {
5553 $cond = make_conditional_string ($negate, $cond);
5555 error ($where, "else reminder ($negate$cond) incompatible with "
5556 . "current conditional: $cond_stack[$#cond_stack]")
5557 if $cond_stack[$#cond_stack] ne $cond;
5558 }
5560 return new Automake::Condition (@cond_stack);
5561 }
5564 # $COND
5565 # cond_stack_endif ($NEGATE, $COND, $WHERE)
5566 # -----------------------------------------
5567 sub cond_stack_endif ($$$)
5568 {
5569 my ($negate, $cond, $where) = @_;
5570 my $old_cond;
5572 if (! @cond_stack)
5573 {
5574 error $where, "endif without if";
5575 return TRUE;
5576 }
5578 # If $COND is given, check against it.
5579 if (defined $cond)
5580 {
5581 $cond = make_conditional_string ($negate, $cond);
5583 error ($where, "endif reminder ($negate$cond) incompatible with "
5584 . "current conditional: $cond_stack[$#cond_stack]")
5585 if $cond_stack[$#cond_stack] ne $cond;
5586 }
5588 pop @cond_stack;
5590 return new Automake::Condition (@cond_stack);
5591 }
5597 ## ------------------------ ##
5598 ## Handling the variables. ##
5599 ## ------------------------ ##
5602 # &define_pretty_variable ($VAR, $COND, $WHERE, @VALUE)
5603 # -----------------------------------------------------
5604 # Like define_variable, but the value is a list, and the variable may
5605 # be defined conditionally. The second argument is the Condition
5606 # under which the value should be defined; this should be the empty
5607 # string to define the variable unconditionally. The third argument
5608 # is a list holding the values to use for the variable. The value is
5609 # pretty printed in the output file.
5610 sub define_pretty_variable ($$$@)
5611 {
5612 my ($var, $cond, $where, @value) = @_;
5614 if (! vardef ($var, $cond))
5615 {
5616 Automake::Variable::define ($var, VAR_AUTOMAKE, '', $cond, "@value",
5617 '', $where, VAR_PRETTY);
5618 rvar ($var)->rdef ($cond)->set_seen;
5619 }
5620 }
5623 # define_variable ($VAR, $VALUE, $WHERE)
5624 # --------------------------------------
5625 # Define a new user variable VAR to VALUE, but only if not already defined.
5626 sub define_variable ($$$)
5627 {
5628 my ($var, $value, $where) = @_;
5629 define_pretty_variable ($var, TRUE, $where, $value);
5630 }
5633 # define_files_variable ($VAR, \@BASENAME, $EXTENSION, $WHERE)
5634 # -----------------------------------------------------------
5635 # Define the $VAR which content is the list of file names composed of
5636 # a @BASENAME and the $EXTENSION.
5637 sub define_files_variable ($\@$$)
5638 {
5639 my ($var, $basename, $extension, $where) = @_;
5640 define_variable ($var,
5641 join (' ', map { "$_.$extension" } @$basename),
5642 $where);
5643 }
5646 # Like define_variable, but define a variable to be the configure
5647 # substitution by the same name.
5648 sub define_configure_variable ($)
5649 {
5650 my ($var) = @_;
5652 my $pretty = VAR_ASIS;
5653 my $owner = VAR_CONFIGURE;
5655 # Do not output the ANSI2KNR configure variable -- we AC_SUBST
5656 # it in protos.m4, but later redefine it elsewhere. This is
5657 # pretty hacky. We also don't output AMDEPBACKSLASH: it might
5658 # be subst'd by `\', which certainly would not be appreciated by
5659 # Make.
5660 if ($var eq 'ANSI2KNR' || $var eq 'AMDEPBACKSLASH')
5661 {
5662 $pretty = VAR_SILENT;
5663 $owner = VAR_AUTOMAKE;
5664 }
5666 Automake::Variable::define ($var, $owner, '', TRUE, subst $var,
5667 '', $configure_vars{$var}, $pretty);
5668 }
5671 # define_compiler_variable ($LANG)
5672 # --------------------------------
5673 # Define a compiler variable. We also handle defining the `LT'
5674 # version of the command when using libtool.
5675 sub define_compiler_variable ($)
5676 {
5677 my ($lang) = @_;
5679 my ($var, $value) = ($lang->compiler, $lang->compile);
5680 my $libtool_tag = '';
5681 $libtool_tag = '--tag=' . $lang->libtool_tag . ' '
5682 if $lang->libtool_tag && exists $libtool_tags{$lang->libtool_tag};
5683 &define_variable ($var, $value, INTERNAL);
5684 &define_variable ("LT$var",
5685 "\$(LIBTOOL) --mode=compile $libtool_tag$value",
5686 INTERNAL)
5687 if var ('LIBTOOL');
5688 }
5691 # define_linker_variable ($LANG)
5692 # ------------------------------
5693 # Define linker variables.
5694 sub define_linker_variable ($)
5695 {
5696 my ($lang) = @_;
5698 my ($var, $value) = ($lang->lder, $lang->ld);
5699 my $libtool_tag = '';
5700 $libtool_tag = '--tag=' . $lang->libtool_tag . ' '
5701 if $lang->libtool_tag && exists $libtool_tags{$lang->libtool_tag};
5702 # CCLD = $(CC).
5703 &define_variable ($lang->lder, $lang->ld, INTERNAL);
5704 # CCLINK = $(CCLD) blah blah...
5705 &define_variable ($lang->linker,
5706 ((var ('LIBTOOL') ?
5707 '$(LIBTOOL) --mode=link ' . $libtool_tag : '')
5708 . $lang->link),
5709 INTERNAL);
5710 }
5712 ################################################################
5714 # &check_trailing_slash ($WHERE, $LINE)
5715 # --------------------------------------
5716 # Return 1 iff $LINE ends with a slash.
5717 # Might modify $LINE.
5718 sub check_trailing_slash ($\$)
5719 {
5720 my ($where, $line) = @_;
5722 # Ignore `##' lines.
5723 return 0 if $$line =~ /$IGNORE_PATTERN/o;
5725 # Catch and fix a common error.
5726 msg "syntax", $where, "whitespace following trailing backslash"
5727 if $$line =~ s/\\\s+\n$/\\\n/;
5729 return $$line =~ /\\$/;
5730 }
5733 # &read_am_file ($AMFILE, $WHERE)
5734 # -------------------------------
5735 # Read Makefile.am and set up %contents. Simultaneously copy lines
5736 # from Makefile.am into $output_trailer, or define variables as
5737 # appropriate. NOTE we put rules in the trailer section. We want
5738 # user rules to come after our generated stuff.
5739 sub read_am_file ($$)
5740 {
5741 my ($amfile, $where) = @_;
5743 my $am_file = new Automake::XFile ("< $amfile");
5744 verb "reading $amfile";
5746 # Keep track of the youngest output dependency.
5747 my $mtime = mtime $amfile;
5748 $output_deps_greatest_timestamp = $mtime
5749 if $mtime > $output_deps_greatest_timestamp;
5751 my $spacing = '';
5752 my $comment = '';
5753 my $blank = 0;
5754 my $saw_bk = 0;
5756 use constant IN_VAR_DEF => 0;
5757 use constant IN_RULE_DEF => 1;
5758 use constant IN_COMMENT => 2;
5759 my $prev_state = IN_RULE_DEF;
5761 while ($_ = $am_file->getline)
5762 {
5763 $where->set ("$amfile:$.");
5764 if (/$IGNORE_PATTERN/o)
5765 {
5766 # Merely delete comments beginning with two hashes.
5767 }
5768 elsif (/$WHITE_PATTERN/o)
5769 {
5770 error $where, "blank line following trailing backslash"
5771 if $saw_bk;
5772 # Stick a single white line before the incoming macro or rule.
5773 $spacing = "\n";
5774 $blank = 1;
5775 # Flush all comments seen so far.
5776 if ($comment ne '')
5777 {
5778 $output_vars .= $comment;
5779 $comment = '';
5780 }
5781 }
5782 elsif (/$COMMENT_PATTERN/o)
5783 {
5784 # Stick comments before the incoming macro or rule. Make
5785 # sure a blank line precedes the first block of comments.
5786 $spacing = "\n" unless $blank;
5787 $blank = 1;
5788 $comment .= $spacing . $_;
5789 $spacing = '';
5790 $prev_state = IN_COMMENT;
5791 }
5792 else
5793 {
5794 last;
5795 }
5796 $saw_bk = check_trailing_slash ($where, $_);
5797 }
5799 # We save the conditional stack on entry, and then check to make
5800 # sure it is the same on exit. This lets us conditionally include
5801 # other files.
5802 my @saved_cond_stack = @cond_stack;
5803 my $cond = new Automake::Condition (@cond_stack);
5805 my $last_var_name = '';
5806 my $last_var_type = '';
5807 my $last_var_value = '';
5808 my $last_where;
5809 # FIXME: shouldn't use $_ in this loop; it is too big.
5810 while ($_)
5811 {
5812 $where->set ("$amfile:$.");
5814 # Make sure the line is \n-terminated.
5815 chomp;
5816 $_ .= "\n";
5818 # Don't look at MAINTAINER_MODE_TRUE here. That shouldn't be
5819 # used by users. @MAINT@ is an anachronism now.
5820 $_ =~ s/\@MAINT\@//g
5821 unless $seen_maint_mode;
5823 my $new_saw_bk = check_trailing_slash ($where, $_);
5825 if (/$IGNORE_PATTERN/o)
5826 {
5827 # Merely delete comments beginning with two hashes.
5828 }
5829 elsif (/$WHITE_PATTERN/o)
5830 {
5831 # Stick a single white line before the incoming macro or rule.
5832 $spacing = "\n";
5833 error $where, "blank line following trailing backslash"
5834 if $saw_bk;
5835 }
5836 elsif (/$COMMENT_PATTERN/o)
5837 {
5838 # Stick comments before the incoming macro or rule.
5839 $comment .= $spacing . $_;
5840 $spacing = '';
5841 error $where, "comment following trailing backslash"
5842 if $saw_bk && $comment eq '';
5843 $prev_state = IN_COMMENT;
5844 }
5845 elsif ($saw_bk)
5846 {
5847 if ($prev_state == IN_RULE_DEF)
5848 {
5849 my $cond = new Automake::Condition @cond_stack;
5850 $output_trailer .= $cond->subst_string;
5851 $output_trailer .= $_;
5852 }
5853 elsif ($prev_state == IN_COMMENT)
5854 {
5855 # If the line doesn't start with a `#', add it.
5856 # We do this because a continued comment like
5857 # # A = foo \
5858 # bar \
5859 # baz
5860 # is not portable. BSD make doesn't honor
5861 # escaped newlines in comments.
5862 s/^#?/#/;
5863 $comment .= $spacing . $_;
5864 }
5865 else # $prev_state == IN_VAR_DEF
5866 {
5867 $last_var_value .= ' '
5868 unless $last_var_value =~ /\s$/;
5869 $last_var_value .= $_;
5871 if (!/\\$/)
5872 {
5873 Automake::Variable::define ($last_var_name, VAR_MAKEFILE,
5874 $last_var_type, $cond,
5875 $last_var_value, $comment,
5876 $last_where, VAR_ASIS)
5877 if $cond != FALSE;
5878 $comment = $spacing = '';
5879 }
5880 }
5881 }
5883 elsif (/$IF_PATTERN/o)
5884 {
5885 $cond = cond_stack_if ($1, $2, $where);
5886 }
5887 elsif (/$ELSE_PATTERN/o)
5888 {
5889 $cond = cond_stack_else ($1, $2, $where);
5890 }
5891 elsif (/$ENDIF_PATTERN/o)
5892 {
5893 $cond = cond_stack_endif ($1, $2, $where);
5894 }
5896 elsif (/$RULE_PATTERN/o)
5897 {
5898 # Found a rule.
5899 $prev_state = IN_RULE_DEF;
5901 # For now we have to output all definitions of user rules
5902 # and can't diagnose duplicates (see the comment in
5903 # rule_define). So we go on and ignore the return value.
5904 Automake::Rule::define ($1, $amfile, RULE_USER, $cond, $where);
5906 check_variable_expansions ($_, $where);
5908 $output_trailer .= $comment . $spacing;
5909 my $cond = new Automake::Condition @cond_stack;
5910 $output_trailer .= $cond->subst_string;
5911 $output_trailer .= $_;
5912 $comment = $spacing = '';
5913 }
5914 elsif (/$ASSIGNMENT_PATTERN/o)
5915 {
5916 # Found a macro definition.
5917 $prev_state = IN_VAR_DEF;
5918 $last_var_name = $1;
5919 $last_var_type = $2;
5920 $last_var_value = $3;
5921 $last_where = $where->clone;
5922 if ($3 ne '' && substr ($3, -1) eq "\\")
5923 {
5924 # We preserve the `\' because otherwise the long lines
5925 # that are generated will be truncated by broken
5926 # `sed's.
5927 $last_var_value = $3 . "\n";
5928 }
5930 if (!/\\$/)
5931 {
5932 Automake::Variable::define ($last_var_name, VAR_MAKEFILE,
5933 $last_var_type, $cond,
5934 $last_var_value, $comment,
5935 $last_where, VAR_ASIS)
5936 if $cond != FALSE;
5937 $comment = $spacing = '';
5938 }
5939 }
5940 elsif (/$INCLUDE_PATTERN/o)
5941 {
5942 my $path = $1;
5944 if ($path =~ s/^\$\(top_srcdir\)\///)
5945 {
5946 push (@include_stack, "\$\(top_srcdir\)/$path");
5947 # Distribute any included file.
5949 # Always use the $(top_srcdir) prefix in DIST_COMMON,
5950 # otherwise OSF make will implicitly copy the included
5951 # file in the build tree during `make distdir' to satisfy
5952 # the dependency.
5953 # (subdircond2.test and subdircond3.test will fail.)
5954 push_dist_common ("\$\(top_srcdir\)/$path");
5955 }
5956 else
5957 {
5958 $path =~ s/\$\(srcdir\)\///;
5959 push (@include_stack, "\$\(srcdir\)/$path");
5960 # Always use the $(srcdir) prefix in DIST_COMMON,
5961 # otherwise OSF make will implicitly copy the included
5962 # file in the build tree during `make distdir' to satisfy
5963 # the dependency.
5964 # (subdircond2.test and subdircond3.test will fail.)
5965 push_dist_common ("\$\(srcdir\)/$path");
5966 $path = $relative_dir . "/" . $path if $relative_dir ne '.';
5967 }
5968 $where->push_context ("`$path' included from here");
5969 &read_am_file ($path, $where);
5970 $where->pop_context;
5971 }
5972 else
5973 {
5974 # This isn't an error; it is probably a continued rule.
5975 # In fact, this is what we assume.
5976 $prev_state = IN_RULE_DEF;
5977 check_variable_expansions ($_, $where);
5978 $output_trailer .= $comment . $spacing;
5979 my $cond = new Automake::Condition @cond_stack;
5980 $output_trailer .= $cond->subst_string;
5981 $output_trailer .= $_;
5982 $comment = $spacing = '';
5983 error $where, "`#' comment at start of rule is unportable"
5984 if $_ =~ /^\t\s*\#/;
5985 }
5987 $saw_bk = $new_saw_bk;
5988 $_ = $am_file->getline;
5989 }
5991 $output_trailer .= $comment;
5993 error ($where, "trailing backslash on last line")
5994 if $saw_bk;
5996 error ($where, (@cond_stack ? "unterminated conditionals: @cond_stack"
5997 : "too many conditionals closed in include file"))
5998 if "@saved_cond_stack" ne "@cond_stack";
5999 }
6002 # define_standard_variables ()
6003 # ----------------------------
6004 # A helper for read_main_am_file which initializes configure variables
6005 # and variables from header-vars.am.
6006 sub define_standard_variables
6007 {
6008 my $saved_output_vars = $output_vars;
6009 my ($comments, undef, $rules) =
6010 file_contents_internal (1, "$libdir/am/header-vars.am",
6011 new Automake::Location);
6013 foreach my $var (sort keys %configure_vars)
6014 {
6015 &define_configure_variable ($var);
6016 }
6018 $output_vars .= $comments . $rules;
6019 }
6021 # Read main am file.
6022 sub read_main_am_file
6023 {
6024 my ($amfile) = @_;
6026 # This supports the strange variable tricks we are about to play.
6027 prog_error (macros_dump () . "variable defined before read_main_am_file")
6028 if (scalar (variables) > 0);
6030 # Generate copyright header for generated Makefile.in.
6031 # We do discard the output of predefined variables, handled below.
6032 $output_vars = ("# $in_file_name generated by automake "
6033 . $VERSION . " from $am_file_name.\n");
6034 $output_vars .= '# ' . subst ('configure_input') . "\n";
6035 $output_vars .= $gen_copyright;
6037 # We want to predefine as many variables as possible. This lets
6038 # the user set them with `+=' in Makefile.am.
6039 &define_standard_variables;
6041 # Read user file, which might override some of our values.
6042 &read_am_file ($amfile, new Automake::Location);
6043 }
6047 ################################################################
6049 # $FLATTENED
6050 # &flatten ($STRING)
6051 # ------------------
6052 # Flatten the $STRING and return the result.
6053 sub flatten
6054 {
6055 $_ = shift;
6057 s/\\\n//somg;
6058 s/\s+/ /g;
6059 s/^ //;
6060 s/ $//;
6062 return $_;
6063 }
6066 # @PARAGRAPHS
6067 # &make_paragraphs ($MAKEFILE, [%TRANSFORM])
6068 # ------------------------------------------
6069 # Load a $MAKEFILE, apply the %TRANSFORM, and return it as a list of
6070 # paragraphs.
6071 sub make_paragraphs ($%)
6072 {
6073 my ($file, %transform) = @_;
6075 # Complete %transform with global options and make it a Perl $command.
6076 # Note that %transform goes last, so it overrides global options.
6077 my $command =
6078 "s/$IGNORE_PATTERN//gm;"
6079 . transform ('CYGNUS' => !! option 'cygnus',
6080 'MAINTAINER-MODE'
6081 => $seen_maint_mode ? subst ('MAINTAINER_MODE_TRUE') : '',
6083 'BZIP2' => !! option 'dist-bzip2',
6084 'COMPRESS' => !! option 'dist-tarZ',
6085 'GZIP' => ! option 'no-dist-gzip',
6086 'SHAR' => !! option 'dist-shar',
6087 'ZIP' => !! option 'dist-zip',
6089 'INSTALL-INFO' => ! option 'no-installinfo',
6090 'INSTALL-MAN' => ! option 'no-installman',
6091 'CK-NEWS' => !! option 'check-news',
6093 'SUBDIRS' => !! var ('SUBDIRS'),
6094 'TOPDIR' => backname ($relative_dir),
6095 'TOPDIR_P' => $relative_dir eq '.',
6097 'BUILD' => $seen_canonical == AC_CANONICAL_SYSTEM,
6098 'HOST' => $seen_canonical,
6099 'TARGET' => $seen_canonical == AC_CANONICAL_SYSTEM,
6101 'LIBTOOL' => !! var ('LIBTOOL'),
6102 'NONLIBTOOL' => 1,
6103 'FIRST' => ! $transformed_files{$file},
6104 %transform)
6105 # We don't need more than two consecutive new-lines.
6106 . 's/\n{3,}/\n\n/g';
6108 $transformed_files{$file} = 1;
6110 # Swallow the file and apply the COMMAND.
6111 my $fc_file = new Automake::XFile "< $file";
6112 # Looks stupid?
6113 verb "reading $file";
6114 my $saved_dollar_slash = $/;
6115 undef $/;
6116 $_ = $fc_file->getline;
6117 $/ = $saved_dollar_slash;
6118 eval $command;
6119 $fc_file->close;
6120 my $content = $_;
6122 # Split at unescaped new lines.
6123 my @lines = split (/(?<!\\)\n/, $content);
6124 my @res;
6126 while (defined ($_ = shift @lines))
6127 {
6128 my $paragraph = "$_";
6129 # If we are a rule, eat as long as we start with a tab.
6130 if (/$RULE_PATTERN/smo)
6131 {
6132 while (defined ($_ = shift @lines) && $_ =~ /^\t/)
6133 {
6134 $paragraph .= "\n$_";
6135 }
6136 unshift (@lines, $_);
6137 }
6139 # If we are a comments, eat as much comments as you can.
6140 elsif (/$COMMENT_PATTERN/smo)
6141 {
6142 while (defined ($_ = shift @lines)
6143 && $_ =~ /$COMMENT_PATTERN/smo)
6144 {
6145 $paragraph .= "\n$_";
6146 }
6147 unshift (@lines, $_);
6148 }
6150 push @res, $paragraph;
6151 $paragraph = '';
6152 }
6154 return @res;
6155 }
6159 # ($COMMENT, $VARIABLES, $RULES)
6160 # &file_contents_internal ($IS_AM, $FILE, $WHERE, [%TRANSFORM])
6161 # -------------------------------------------------------------
6162 # Return contents of a file from $libdir/am, automatically skipping
6163 # macros or rules which are already known. $IS_AM iff the caller is
6164 # reading an Automake file (as opposed to the user's Makefile.am).
6165 sub file_contents_internal ($$$%)
6166 {
6167 my ($is_am, $file, $where, %transform) = @_;
6169 $where->set ($file);
6171 my $result_vars = '';
6172 my $result_rules = '';
6173 my $comment = '';
6174 my $spacing = '';
6176 # The following flags are used to track rules spanning across
6177 # multiple paragraphs.
6178 my $is_rule = 0; # 1 if we are processing a rule.
6179 my $discard_rule = 0; # 1 if the current rule should not be output.
6181 # We save the conditional stack on entry, and then check to make
6182 # sure it is the same on exit. This lets us conditionally include
6183 # other files.
6184 my @saved_cond_stack = @cond_stack;
6185 my $cond = new Automake::Condition (@cond_stack);
6187 foreach (make_paragraphs ($file, %transform))
6188 {
6189 # FIXME: no line number available.
6190 $where->set ($file);
6192 # Sanity checks.
6193 error $where, "blank line following trailing backslash:\n$_"
6194 if /\\$/;
6195 error $where, "comment following trailing backslash:\n$_"
6196 if /\\#/;
6198 if (/^$/)
6199 {
6200 $is_rule = 0;
6201 # Stick empty line before the incoming macro or rule.
6202 $spacing = "\n";
6203 }
6204 elsif (/$COMMENT_PATTERN/mso)
6205 {
6206 $is_rule = 0;
6207 # Stick comments before the incoming macro or rule.
6208 $comment = "$_\n";
6209 }
6211 # Handle inclusion of other files.
6212 elsif (/$INCLUDE_PATTERN/o)
6213 {
6214 if ($cond != FALSE)
6215 {
6216 my $file = ($is_am ? "$libdir/am/" : '') . $1;
6217 $where->push_context ("`$file' included from here");
6218 # N-ary `.=' fails.
6219 my ($com, $vars, $rules)
6220 = file_contents_internal ($is_am, $file, $where, %transform);
6221 $where->pop_context;
6222 $comment .= $com;
6223 $result_vars .= $vars;
6224 $result_rules .= $rules;
6225 }
6226 }
6228 # Handling the conditionals.
6229 elsif (/$IF_PATTERN/o)
6230 {
6231 $cond = cond_stack_if ($1, $2, $file);
6232 }
6233 elsif (/$ELSE_PATTERN/o)
6234 {
6235 $cond = cond_stack_else ($1, $2, $file);
6236 }
6237 elsif (/$ENDIF_PATTERN/o)
6238 {
6239 $cond = cond_stack_endif ($1, $2, $file);
6240 }
6242 # Handling rules.
6243 elsif (/$RULE_PATTERN/mso)
6244 {
6245 $is_rule = 1;
6246 $discard_rule = 0;
6247 # Separate relationship from optional actions: the first
6248 # `new-line tab" not preceded by backslash (continuation
6249 # line).
6250 my $paragraph = $_;
6251 /^(.*?)(?:(?<!\\)\n(\t.*))?$/s;
6252 my ($relationship, $actions) = ($1, $2 || '');
6254 # Separate targets from dependencies: the first colon.
6255 $relationship =~ /^([^:]+\S+) *: *(.*)$/som;
6256 my ($targets, $dependencies) = ($1, $2);
6257 # Remove the escaped new lines.
6258 # I don't know why, but I have to use a tmp $flat_deps.
6259 my $flat_deps = &flatten ($dependencies);
6260 my @deps = split (' ', $flat_deps);
6262 foreach (split (' ' , $targets))
6263 {
6264 # FIXME: 1. We are not robust to people defining several targets
6265 # at once, only some of them being in %dependencies. The
6266 # actions from the targets in %dependencies are usually generated
6267 # from the content of %actions, but if some targets in $targets
6268 # are not in %dependencies the ELSE branch will output
6269 # a rule for all $targets (i.e. the targets which are both
6270 # in %dependencies and $targets will have two rules).
6272 # FIXME: 2. The logic here is not able to output a
6273 # multi-paragraph rule several time (e.g. for each condition
6274 # it is defined for) because it only knows the first paragraph.
6276 # FIXME: 3. We are not robust to people defining a subset
6277 # of a previously defined "multiple-target" rule. E.g.
6278 # `foo:' after `foo bar:'.
6280 # Output only if not in FALSE.
6281 if (defined $dependencies{$_} && $cond != FALSE)
6282 {
6283 &depend ($_, @deps);
6284 if ($actions{$_})
6285 {
6286 $actions{$_} .= "\n$actions" if $actions;
6287 }
6288 else
6289 {
6290 $actions{$_} = $actions;
6291 }
6292 }
6293 else
6294 {
6295 # Free-lance dependency. Output the rule for all the
6296 # targets instead of one by one.
6297 my @undefined_conds =
6298 Automake::Rule::define ($targets, $file,
6299 $is_am ? RULE_AUTOMAKE : RULE_USER,
6300 $cond, $where);
6301 for my $undefined_cond (@undefined_conds)
6302 {
6303 my $condparagraph = $paragraph;
6304 $condparagraph =~ s/^/$undefined_cond->subst_string/gme;
6305 $result_rules .= "$spacing$comment$condparagraph\n";
6306 }
6307 if (scalar @undefined_conds == 0)
6308 {
6309 # Remember to discard next paragraphs
6310 # if they belong to this rule.
6311 # (but see also FIXME: #2 above.)
6312 $discard_rule = 1;
6313 }
6314 $comment = $spacing = '';
6315 last;
6316 }
6317 }
6318 }
6320 elsif (/$ASSIGNMENT_PATTERN/mso)
6321 {
6322 my ($var, $type, $val) = ($1, $2, $3);
6323 error $where, "variable `$var' with trailing backslash"
6324 if /\\$/;
6326 $is_rule = 0;
6328 Automake::Variable::define ($var,
6329 $is_am ? VAR_AUTOMAKE : VAR_MAKEFILE,
6330 $type, $cond, $val, $comment, $where,
6331 VAR_ASIS)
6332 if $cond != FALSE;
6334 $comment = $spacing = '';
6335 }
6336 else
6337 {
6338 # This isn't an error; it is probably some tokens which
6339 # configure is supposed to replace, such as `@SET-MAKE@',
6340 # or some part of a rule cut by an if/endif.
6341 if (! $cond->false && ! ($is_rule && $discard_rule))
6342 {
6343 s/^/$cond->subst_string/gme;
6344 $result_rules .= "$spacing$comment$_\n";
6345 }
6346 $comment = $spacing = '';
6347 }
6348 }
6350 error ($where, @cond_stack ?
6351 "unterminated conditionals: @cond_stack" :
6352 "too many conditionals closed in include file")
6353 if "@saved_cond_stack" ne "@cond_stack";
6355 return ($comment, $result_vars, $result_rules);
6356 }
6359 # $CONTENTS
6360 # &file_contents ($BASENAME, $WHERE, [%TRANSFORM])
6361 # ------------------------------------------------
6362 # Return contents of a file from $libdir/am, automatically skipping
6363 # macros or rules which are already known.
6364 sub file_contents ($$%)
6365 {
6366 my ($basename, $where, %transform) = @_;
6367 my ($comments, $variables, $rules) =
6368 file_contents_internal (1, "$libdir/am/$basename.am", $where,
6369 %transform);
6370 return "$comments$variables$rules";
6371 }
6374 # $REGEXP
6375 # &transform (%PAIRS)
6376 # -------------------
6377 # For each ($TOKEN, $VAL) in %PAIRS produce a replacement expression
6378 # suitable for file_contents which:
6379 # - replaces %$TOKEN% with $VAL,
6380 # - enables/disables ?$TOKEN? and ?!$TOKEN?,
6381 # - replaces %?$TOKEN% with TRUE or FALSE.
6382 sub transform (%)
6383 {
6384 my (%pairs) = @_;
6385 my $result = '';
6387 while (my ($token, $val) = each %pairs)
6388 {
6389 $result .= "s/\Q%$token%\E/\Q$val\E/gm;";
6390 if ($val)
6391 {
6392 $result .= "s/\Q?$token?\E//gm;s/^.*\Q?!$token?\E.*\\n//gm;";
6393 $result .= "s/\Q%?$token%\E/TRUE/gm;";
6394 }
6395 else
6396 {
6397 $result .= "s/\Q?!$token?\E//gm;s/^.*\Q?$token?\E.*\\n//gm;";
6398 $result .= "s/\Q%?$token%\E/FALSE/gm;";
6399 }
6400 }
6402 return $result;
6403 }
6406 # &append_exeext ($MACRO)
6407 # -----------------------
6408 # Macro is an Automake magic macro which primary is PROGRAMS, e.g.
6409 # bin_PROGRAMS. Make sure these programs have $(EXEEXT) appended.
6410 sub append_exeext ($)
6411 {
6412 my ($macro) = @_;
6414 prog_error "append_exeext ($macro)"
6415 unless $macro =~ /_PROGRAMS$/;
6417 transform_variable_recursively
6418 ($macro, $macro, 'am__EXEEXT', 0, INTERNAL,
6419 sub {
6420 my ($subvar, $val, $cond, $full_cond) = @_;
6421 # Append $(EXEEXT) unless the user did it already, or it's a
6422 # @substitution@.
6423 $val .= '$(EXEEXT)' unless $val =~ /(?:\$\(EXEEXT\)$|^[@]\w+[@]$)/;
6424 return $val;
6425 });
6426 }
6429 # @PREFIX
6430 # &am_primary_prefixes ($PRIMARY, $CAN_DIST, @PREFIXES)
6431 # -----------------------------------------------------
6432 # Find all variable prefixes that are used for install directories. A
6433 # prefix `zar' qualifies iff:
6434 #
6435 # * `zardir' is a variable.
6436 # * `zar_PRIMARY' is a variable.
6437 #
6438 # As a side effect, it looks for misspellings. It is an error to have
6439 # a variable ending in a "reserved" suffix whose prefix is unknown, e.g.
6440 # "bin_PROGRAMS". However, unusual prefixes are allowed if a variable
6441 # of the same name (with "dir" appended) exists. For instance, if the
6442 # variable "zardir" is defined, then "zar_PROGRAMS" becomes valid.
6443 # This is to provide a little extra flexibility in those cases which
6444 # need it.
6445 sub am_primary_prefixes ($$@)
6446 {
6447 my ($primary, $can_dist, @prefixes) = @_;
6449 local $_;
6450 my %valid = map { $_ => 0 } @prefixes;
6451 $valid{'EXTRA'} = 0;
6452 foreach my $var (variables)
6453 {
6454 # Automake is allowed to define variables that look like primaries
6455 # but which aren't. E.g. INSTALL_sh_DATA.
6456 # Autoconf can also define variables like INSTALL_DATA, so
6457 # ignore all configure variables (at least those which are not
6458 # redefined in Makefile.am).
6459 # FIXME: We should make sure that these variables are not
6460 # conditionally defined (or else adjust the condition below).
6461 my $def = $var->def (TRUE);
6462 next if $def && $def->owner != VAR_MAKEFILE;
6464 my $varname = $var->name;
6466 if ($varname =~ /^(nobase_)?(dist_|nodist_)?(.*)_$primary$/)
6467 {
6468 my ($base, $dist, $X) = ($1 || '', $2 || '', $3 || '');
6469 if ($dist ne '' && ! $can_dist)
6470 {
6471 err_var ($var,
6472 "invalid variable `$varname': `dist' is forbidden");
6473 }
6474 # Standard directories must be explicitly allowed.
6475 elsif (! defined $valid{$X} && exists $standard_prefix{$X})
6476 {
6477 err_var ($var,
6478 "`${X}dir' is not a legitimate directory " .
6479 "for `$primary'");
6480 }
6481 # A not explicitly valid directory is allowed if Xdir is defined.
6482 elsif (! defined $valid{$X} &&
6483 $var->requires_variables ("`$varname' is used", "${X}dir"))
6484 {
6485 # Nothing to do. Any error message has been output
6486 # by $var->requires_variables.
6487 }
6488 else
6489 {
6490 # Ensure all extended prefixes are actually used.
6491 $valid{"$base$dist$X"} = 1;
6492 }
6493 }
6494 }
6496 # Return only those which are actually defined.
6497 return sort grep { var ($_ . '_' . $primary) } keys %valid;
6498 }
6501 # Handle `where_HOW' variable magic. Does all lookups, generates
6502 # install code, and possibly generates code to define the primary
6503 # variable. The first argument is the name of the .am file to munge,
6504 # the second argument is the primary variable (e.g. HEADERS), and all
6505 # subsequent arguments are possible installation locations.
6506 #
6507 # Returns list of [$location, $value] pairs, where
6508 # $value's are the values in all where_HOW variable, and $location
6509 # there associated location (the place here their parent variables were
6510 # defined).
6511 #
6512 # FIXME: this should be rewritten to be cleaner. It should be broken
6513 # up into multiple functions.
6514 #
6515 # Usage is: am_install_var (OPTION..., file, HOW, where...)
6516 sub am_install_var
6517 {
6518 my (@args) = @_;
6520 my $do_require = 1;
6521 my $can_dist = 0;
6522 my $default_dist = 0;
6523 while (@args)
6524 {
6525 if ($args[0] eq '-noextra')
6526 {
6527 $do_require = 0;
6528 }
6529 elsif ($args[0] eq '-candist')
6530 {
6531 $can_dist = 1;
6532 }
6533 elsif ($args[0] eq '-defaultdist')
6534 {
6535 $default_dist = 1;
6536 $can_dist = 1;
6537 }
6538 elsif ($args[0] !~ /^-/)
6539 {
6540 last;
6541 }
6542 shift (@args);
6543 }
6545 my ($file, $primary, @prefix) = @args;
6547 # Now that configure substitutions are allowed in where_HOW
6548 # variables, it is an error to actually define the primary. We
6549 # allow `JAVA', as it is customarily used to mean the Java
6550 # interpreter. This is but one of several Java hacks. Similarly,
6551 # `PYTHON' is customarily used to mean the Python interpreter.
6552 reject_var $primary, "`$primary' is an anachronism"
6553 unless $primary eq 'JAVA' || $primary eq 'PYTHON';
6555 # Get the prefixes which are valid and actually used.
6556 @prefix = am_primary_prefixes ($primary, $can_dist, @prefix);
6558 # If a primary includes a configure substitution, then the EXTRA_
6559 # form is required. Otherwise we can't properly do our job.
6560 my $require_extra;
6562 my @used = ();
6563 my @result = ();
6565 foreach my $X (@prefix)
6566 {
6567 my $nodir_name = $X;
6568 my $one_name = $X . '_' . $primary;
6569 my $one_var = var $one_name;
6571 my $strip_subdir = 1;
6572 # If subdir prefix should be preserved, do so.
6573 if ($nodir_name =~ /^nobase_/)
6574 {
6575 $strip_subdir = 0;
6576 $nodir_name =~ s/^nobase_//;
6577 }
6579 # If files should be distributed, do so.
6580 my $dist_p = 0;
6581 if ($can_dist)
6582 {
6583 $dist_p = (($default_dist && $nodir_name !~ /^nodist_/)
6584 || (! $default_dist && $nodir_name =~ /^dist_/));
6585 $nodir_name =~ s/^(dist|nodist)_//;
6586 }
6589 # Use the location of the currently processed variable.
6590 # We are not processing a particular condition, so pick the first
6591 # available.
6592 my $tmpcond = $one_var->conditions->one_cond;
6593 my $where = $one_var->rdef ($tmpcond)->location->clone;
6595 # Append actual contents of where_PRIMARY variable to
6596 # @result, skipping @substitutions@.
6597 foreach my $locvals ($one_var->value_as_list_recursive (location => 1))
6598 {
6599 my ($loc, $value) = @$locvals;
6600 # Skip configure substitutions.
6601 if ($value =~ /^\@.*\@$/)
6602 {
6603 if ($nodir_name eq 'EXTRA')
6604 {
6605 error ($where,
6606 "`$one_name' contains configure substitution, "
6607 . "but shouldn't");
6608 }
6609 # Check here to make sure variables defined in
6610 # configure.ac do not imply that EXTRA_PRIMARY
6611 # must be defined.
6612 elsif (! defined $configure_vars{$one_name})
6613 {
6614 $require_extra = $one_name
6615 if $do_require;
6616 }
6617 }
6618 else
6619 {
6620 push (@result, $locvals);
6621 }
6622 }
6623 # A blatant hack: we rewrite each _PROGRAMS primary to include
6624 # EXEEXT.
6625 append_exeext ($one_name)
6626 if $primary eq 'PROGRAMS';
6627 # "EXTRA" shouldn't be used when generating clean targets,
6628 # all, or install targets. We used to warn if EXTRA_FOO was
6629 # defined uselessly, but this was annoying.
6630 next
6631 if $nodir_name eq 'EXTRA';
6633 if ($nodir_name eq 'check')
6634 {
6635 push (@check, '$(' . $one_name . ')');
6636 }
6637 else
6638 {
6639 push (@used, '$(' . $one_name . ')');
6640 }
6642 # Is this to be installed?
6643 my $install_p = $nodir_name ne 'noinst' && $nodir_name ne 'check';
6645 # If so, with install-exec? (or install-data?).
6646 my $exec_p = ($nodir_name =~ /$EXEC_DIR_PATTERN/o);
6648 my $check_options_p = $install_p && !! option 'std-options';
6650 # Use the location of the currently processed variable as context.
6651 $where->push_context ("while processing `$one_name'");
6653 # The variable containing all file to distribute.
6654 my $distvar = "\$($one_name)";
6655 $distvar = shadow_unconditionally ($one_name, $where)
6656 if ($dist_p && $one_var->has_conditional_contents);
6658 # Singular form of $PRIMARY.
6659 (my $one_primary = $primary) =~ s/S$//;
6660 $output_rules .= &file_contents ($file, $where,
6661 PRIMARY => $primary,
6662 ONE_PRIMARY => $one_primary,
6663 DIR => $X,
6664 NDIR => $nodir_name,
6665 BASE => $strip_subdir,
6667 EXEC => $exec_p,
6668 INSTALL => $install_p,
6669 DIST => $dist_p,
6670 DISTVAR => $distvar,
6671 'CK-OPTS' => $check_options_p);
6672 }
6674 # The JAVA variable is used as the name of the Java interpreter.
6675 # The PYTHON variable is used as the name of the Python interpreter.
6676 if (@used && $primary ne 'JAVA' && $primary ne 'PYTHON')
6677 {
6678 # Define it.
6679 define_pretty_variable ($primary, TRUE, INTERNAL, @used);
6680 $output_vars .= "\n";
6681 }
6683 err_var ($require_extra,
6684 "`$require_extra' contains configure substitution,\n"
6685 . "but `EXTRA_$primary' not defined")
6686 if ($require_extra && ! var ('EXTRA_' . $primary));
6688 # Push here because PRIMARY might be configure time determined.
6689 push (@all, '$(' . $primary . ')')
6690 if @used && $primary ne 'JAVA' && $primary ne 'PYTHON';
6692 # Make the result unique. This lets the user use conditionals in
6693 # a natural way, but still lets us program lazily -- we don't have
6694 # to worry about handling a particular object more than once.
6695 # We will keep only one location per object.
6696 my %result = ();
6697 for my $pair (@result)
6698 {
6699 my ($loc, $val) = @$pair;
6700 $result{$val} = $loc;
6701 }
6702 my @l = sort keys %result;
6703 return map { [$result{$_}->clone, $_] } @l;
6704 }
6707 ################################################################
6709 # Each key in this hash is the name of a directory holding a
6710 # Makefile.in. These variables are local to `is_make_dir'.
6711 my %make_dirs = ();
6712 my $make_dirs_set = 0;
6714 sub is_make_dir
6715 {
6716 my ($dir) = @_;
6717 if (! $make_dirs_set)
6718 {
6719 foreach my $iter (@configure_input_files)
6720 {
6721 $make_dirs{dirname ($iter)} = 1;
6722 }
6723 # We also want to notice Makefile.in's.
6724 foreach my $iter (@other_input_files)
6725 {
6726 if ($iter =~ /Makefile\.in$/)
6727 {
6728 $make_dirs{dirname ($iter)} = 1;
6729 }
6730 }
6731 $make_dirs_set = 1;
6732 }
6733 return defined $make_dirs{$dir};
6734 }
6736 ################################################################
6738 # Find the aux dir. This should match the algorithm used by
6739 # ./configure. (See the Autoconf documentation for for
6740 # AC_CONFIG_AUX_DIR.)
6741 sub locate_aux_dir ()
6742 {
6743 if (! $config_aux_dir_set_in_configure_ac)
6744 {
6745 # The default auxiliary directory is the first
6746 # of ., .., or ../.. that contains install-sh.
6747 # Assume . if install-sh doesn't exist yet.
6748 for my $dir (qw (. .. ../..))
6749 {
6750 if (-f "$dir/install-sh")
6751 {
6752 $config_aux_dir = $dir;
6753 last;
6754 }
6755 }
6756 $config_aux_dir = '.' unless $config_aux_dir;
6757 }
6758 # Avoid unsightly '/.'s.
6759 $am_config_aux_dir =
6760 '$(top_srcdir)' . ($config_aux_dir eq '.' ? "" : "/$config_aux_dir");
6761 $am_config_aux_dir =~ s,/*$,,;
6762 }
6765 # &maybe_push_required_file ($DIR, $FILE, $FULLFILE)
6766 # --------------------------------------------------
6767 # See if we want to push this file onto dist_common. This function
6768 # encodes the rules for deciding when to do so.
6769 sub maybe_push_required_file
6770 {
6771 my ($dir, $file, $fullfile) = @_;
6773 if ($dir eq $relative_dir)
6774 {
6775 push_dist_common ($file);
6776 return 1;
6777 }
6778 elsif ($relative_dir eq '.' && ! &is_make_dir ($dir))
6779 {
6780 # If we are doing the topmost directory, and the file is in a
6781 # subdir which does not have a Makefile, then we distribute it
6782 # here.
6784 # If a required file is above the source tree, it is important
6785 # to prefix it with `$(srcdir)' so that no VPATH search is
6786 # performed. Otherwise problems occur with Make implementations
6787 # that rewrite and simplify rules whose dependencies are found in a
6788 # VPATH location. Here is an example with OSF1/Tru64 Make.
6789 #
6790 # % cat Makefile
6791 # VPATH = sub
6792 # distdir: ../a
6793 # echo ../a
6794 # % ls
6795 # Makefile a
6796 # % make
6797 # echo a
6798 # a
6799 #
6800 # Dependency `../a' was found in `sub/../a', but this make
6801 # implementation simplified it as `a'. (Note that the sub/
6802 # directory does not even exist.)
6803 #
6804 # This kind of VPATH rewriting seems hard to cancel. The
6805 # distdir.am hack against VPATH rewriting works only when no
6806 # simplification is done, i.e., for dependencies which are in
6807 # subdirectories, not in enclosing directories. Hence, in
6808 # the latter case we use a full path to make sure no VPATH
6809 # search occurs.
6810 $fullfile = '$(srcdir)/' . $fullfile
6811 if $dir =~ m,^\.\.(?:$|/),;
6813 push_dist_common ($fullfile);
6814 return 1;
6815 }
6816 return 0;
6817 }
6820 # If a file name appears as a key in this hash, then it has already
6821 # been checked for. This allows us not to report the same error more
6822 # than once.
6823 my %required_file_not_found = ();
6825 # &require_file_internal ($WHERE, $MYSTRICT, $DIRECTORY, @FILES)
6826 # --------------------------------------------------------------
6827 # Verify that the file must exist in $DIRECTORY, or install it.
6828 # $MYSTRICT is the strictness level at which this file becomes required.
6829 sub require_file_internal ($$$@)
6830 {
6831 my ($where, $mystrict, $dir, @files) = @_;
6833 foreach my $file (@files)
6834 {
6835 my $fullfile = "$dir/$file";
6836 my $found_it = 0;
6837 my $dangling_sym = 0;
6839 if (-l $fullfile && ! -f $fullfile)
6840 {
6841 $dangling_sym = 1;
6842 }
6843 elsif (-f $fullfile)
6844 {
6845 $found_it = 1;
6846 maybe_push_required_file ($dir, $file, $fullfile);
6847 }
6849 # `--force-missing' only has an effect if `--add-missing' is
6850 # specified.
6851 if ($found_it && (! $add_missing || ! $force_missing))
6852 {
6853 next;
6854 }
6855 else
6856 {
6857 # If we've already looked for it, we're done. You might
6858 # wonder why we don't do this before searching for the
6859 # file. If we do that, then something like
6860 # AC_OUTPUT(subdir/foo foo) will fail to put foo.in into
6861 # DIST_COMMON.
6862 if (! $found_it)
6863 {
6864 next if defined $required_file_not_found{$fullfile};
6865 $required_file_not_found{$fullfile} = 1;
6866 }
6868 if ($strictness >= $mystrict)
6869 {
6870 if ($dangling_sym && $add_missing)
6871 {
6872 unlink ($fullfile);
6873 }
6875 my $trailer = '';
6876 my $suppress = 0;
6878 # Only install missing files according to our desired
6879 # strictness level.
6880 my $message = "required file `$fullfile' not found";
6881 if ($add_missing)
6882 {
6883 if (-f ("$libdir/$file"))
6884 {
6885 $suppress = 1;
6887 # Install the missing file. Symlink if we
6888 # can, copy if we must. Note: delete the file
6889 # first, in case it is a dangling symlink.
6890 $message = "installing `$fullfile'";
6891 # Windows Perl will hang if we try to delete a
6892 # file that doesn't exist.
6893 unlink ($fullfile) if -f $fullfile;
6894 if ($symlink_exists && ! $copy_missing)
6895 {
6896 if (! symlink ("$libdir/$file", $fullfile))
6897 {
6898 $suppress = 0;
6899 $trailer = "; error while making link: $!";
6900 }
6901 }
6902 elsif (system ('cp', "$libdir/$file", $fullfile))
6903 {
6904 $suppress = 0;
6905 $trailer = "\n error while copying";
6906 }
6907 }
6909 if (! maybe_push_required_file (dirname ($fullfile),
6910 $file, $fullfile))
6911 {
6912 if (! $found_it && ! $automake_will_process_aux_dir)
6913 {
6914 # We have added the file but could not push it
6915 # into DIST_COMMON, probably because this is
6916 # an auxiliary file and we are not processing
6917 # the top level Makefile. Furthermore Automake
6918 # hasn't been asked to create the Makefile.in
6919 # that distribute the aux dir files.
6920 error ($where, 'Please make a full run of automake'
6921 . " so $fullfile gets distributed.");
6922 }
6923 }
6924 }
6926 # If --force-missing was specified, and we have
6927 # actually found the file, then do nothing.
6928 next
6929 if $found_it && $force_missing;
6931 # If we couldn' install the file, but it is a target in
6932 # the Makefile, don't print anything. This allows files
6933 # like README, AUTHORS, or THANKS to be generated.
6934 next
6935 if !$suppress && rule $file;
6937 msg ($suppress ? 'note' : 'error', $where, "$message$trailer");
6938 }
6939 }
6940 }
6941 }
6943 # &require_file ($WHERE, $MYSTRICT, @FILES)
6944 # -----------------------------------------
6945 sub require_file ($$@)
6946 {
6947 my ($where, $mystrict, @files) = @_;
6948 require_file_internal ($where, $mystrict, $relative_dir, @files);
6949 }
6951 # &require_file_with_macro ($COND, $MACRO, $MYSTRICT, @FILES)
6952 # -----------------------------------------------------------
6953 sub require_file_with_macro ($$$@)
6954 {
6955 my ($cond, $macro, $mystrict, @files) = @_;
6956 $macro = rvar ($macro) unless ref $macro;
6957 require_file ($macro->rdef ($cond)->location, $mystrict, @files);
6958 }
6961 # &require_conf_file ($WHERE, $MYSTRICT, @FILES)
6962 # ----------------------------------------------
6963 # Looks in configuration path, as specified by AC_CONFIG_AUX_DIR.
6964 sub require_conf_file ($$@)
6965 {
6966 my ($where, $mystrict, @files) = @_;
6967 require_file_internal ($where, $mystrict, $config_aux_dir, @files);
6968 }
6971 # &require_conf_file_with_macro ($COND, $MACRO, $MYSTRICT, @FILES)
6972 # ----------------------------------------------------------------
6973 sub require_conf_file_with_macro ($$$@)
6974 {
6975 my ($cond, $macro, $mystrict, @files) = @_;
6976 require_conf_file (rvar ($macro)->rdef ($cond)->location,
6977 $mystrict, @files);
6978 }
6980 ################################################################
6982 # &require_build_directory ($DIRECTORY)
6983 # ------------------------------------
6984 # Emit rules to create $DIRECTORY if needed, and return
6985 # the file that any target requiring this directory should be made
6986 # dependent upon.
6987 sub require_build_directory ($)
6988 {
6989 my $directory = shift;
6990 my $dirstamp = "$directory/\$(am__dirstamp)";
6992 # Don't emit the rule twice.
6993 if (! defined $directory_map{$directory})
6994 {
6995 $directory_map{$directory} = 1;
6997 # Set a variable for the dirstamp basename.
6998 define_pretty_variable ('am__dirstamp', TRUE, INTERNAL,
6999 '$(am__leading_dot)dirstamp');
7001 # Directory must be removed by `make distclean'.
7002 $clean_files{$dirstamp} = DIST_CLEAN;
7004 $output_rules .= ("$dirstamp:\n"
7005 . "\t\@\$(mkdir_p) $directory\n"
7006 . "\t\@: > $dirstamp\n");
7007 }
7009 return $dirstamp;
7010 }
7012 # &require_build_directory_maybe ($FILE)
7013 # --------------------------------------
7014 # If $FILE lies in a subdirectory, emit a rule to create this
7015 # directory and return the file that $FILE should be made
7016 # dependent upon. Otherwise, just return the empty string.
7017 sub require_build_directory_maybe ($)
7018 {
7019 my $file = shift;
7020 my $directory = dirname ($file);
7022 if ($directory ne '.')
7023 {
7024 return require_build_directory ($directory);
7025 }
7026 else
7027 {
7028 return '';
7029 }
7030 }
7032 ################################################################
7034 # Push a list of files onto dist_common.
7035 sub push_dist_common
7036 {
7037 prog_error "push_dist_common run after handle_dist"
7038 if $handle_dist_run;
7039 Automake::Variable::define ('DIST_COMMON', VAR_AUTOMAKE, '+', TRUE, "@_",
7040 '', INTERNAL, VAR_PRETTY);
7041 }
7044 ################################################################
7046 # generate_makefile ($MAKEFILE_AM, $MAKEFILE_IN)
7047 # ----------------------------------------------
7048 # Generate a Makefile.in given the name of the corresponding Makefile and
7049 # the name of the file output by config.status.
7050 sub generate_makefile ($$)
7051 {
7052 my ($makefile_am, $makefile_in) = @_;
7054 # Reset all the Makefile.am related variables.
7055 initialize_per_input;
7057 # AUTOMAKE_OPTIONS can contains -W flags to disable or enable
7058 # warnings for this file. So hold any warning issued before
7059 # we have processed AUTOMAKE_OPTIONS.
7060 buffer_messages ('warning');
7062 # Name of input file ("Makefile.am") and output file
7063 # ("Makefile.in"). These have no directory components.
7064 $am_file_name = basename ($makefile_am);
7065 $in_file_name = basename ($makefile_in);
7067 # $OUTPUT is encoded. If it contains a ":" then the first element
7068 # is the real output file, and all remaining elements are input
7069 # files. We don't scan or otherwise deal with these input files,
7070 # other than to mark them as dependencies. See
7071 # &scan_autoconf_files for details.
7072 my ($makefile, @inputs) = split (/:/, $output_files{$makefile_in});
7074 $relative_dir = dirname ($makefile);
7075 $am_relative_dir = dirname ($makefile_am);
7077 read_main_am_file ($makefile_am);
7078 if (handle_options)
7079 {
7080 # Process buffered warnings.
7081 flush_messages;
7082 # Fatal error. Just return, so we can continue with next file.
7083 return;
7084 }
7085 # Process buffered warnings.
7086 flush_messages;
7088 # There are a few install-related variables that you should not define.
7089 foreach my $var ('PRE_INSTALL', 'POST_INSTALL', 'NORMAL_INSTALL')
7090 {
7091 my $v = var $var;
7092 if ($v)
7093 {
7094 my $def = $v->def (TRUE);
7095 prog_error "$var not defined in condition TRUE"
7096 unless $def;
7097 reject_var $var, "`$var' should not be defined"
7098 if $def->owner != VAR_AUTOMAKE;
7099 }
7100 }
7102 # Catch some obsolete variables.
7103 msg_var ('obsolete', 'INCLUDES',
7104 "`INCLUDES' is the old name for `AM_CPPFLAGS' (or `*_CPPFLAGS')")
7105 if var ('INCLUDES');
7107 # At the toplevel directory, we might need config.guess, config.sub
7108 # or libtool scripts (ltconfig and ltmain.sh).
7109 if ($relative_dir eq '.')
7110 {
7111 # AC_CANONICAL_HOST and AC_CANONICAL_SYSTEM need config.guess and
7112 # config.sub.
7113 require_conf_file ($canonical_location, FOREIGN,
7114 'config.guess', 'config.sub')
7115 if $seen_canonical;
7116 }
7118 # Must do this after reading .am file.
7119 define_variable ('subdir', $relative_dir, INTERNAL);
7121 # If DIST_SUBDIRS is defined, make sure SUBDIRS is, so that
7122 # recursive rules are enabled.
7123 define_pretty_variable ('SUBDIRS', TRUE, INTERNAL, '')
7124 if var 'DIST_SUBDIRS' && ! var 'SUBDIRS';
7126 # Check first, because we might modify some state.
7127 check_cygnus;
7128 check_gnu_standards;
7129 check_gnits_standards;
7131 handle_configure ($makefile_am, $makefile_in, $makefile, @inputs);
7132 handle_gettext;
7133 handle_libraries;
7134 handle_ltlibraries;
7135 handle_programs;
7136 handle_scripts;
7138 # These must be run after all the sources are scanned. They
7139 # use variables defined by &handle_libraries, &handle_ltlibraries,
7140 # or &handle_programs.
7141 handle_compile;
7142 handle_languages;
7143 handle_libtool;
7145 # Variables used by distdir.am and tags.am.
7146 define_pretty_variable ('SOURCES', TRUE, INTERNAL, @sources);
7147 if (! option 'no-dist')
7148 {
7149 define_pretty_variable ('DIST_SOURCES', TRUE, INTERNAL, @dist_sources);
7150 }
7152 handle_multilib;
7153 handle_texinfo;
7154 handle_emacs_lisp;
7155 handle_python;
7156 handle_java;
7157 handle_man_pages;
7158 handle_data;
7159 handle_headers;
7160 handle_subdirs;
7161 handle_tags;
7162 handle_minor_options;
7163 handle_tests;
7165 # This must come after most other rules.
7166 handle_dist;
7168 handle_footer;
7169 do_check_merge_target;
7170 handle_all ($makefile);
7172 # FIXME: Gross!
7173 if (var ('lib_LTLIBRARIES') && var ('bin_PROGRAMS'))
7174 {
7175 $output_rules .= "install-binPROGRAMS: install-libLTLIBRARIES\n\n";
7176 }
7178 handle_install;
7179 handle_clean ($makefile);
7180 handle_factored_dependencies;
7182 # Comes last, because all the above procedures may have
7183 # defined or overridden variables.
7184 $output_vars .= output_variables;
7186 check_typos;
7188 my ($out_file) = $output_directory . '/' . $makefile_in;
7190 if ($exit_code != 0)
7191 {
7192 verb "not writing $out_file because of earlier errors";
7193 return;
7194 }
7196 if (! -d ($output_directory . '/' . $am_relative_dir))
7197 {
7198 mkdir ($output_directory . '/' . $am_relative_dir, 0755);
7199 }
7201 # We make sure that `all:' is the first target.
7202 my $output =
7203 "$output_vars$output_all$output_header$output_rules$output_trailer";
7205 # Decide whether we must update the output file or not.
7206 # We have to update in the following situations.
7207 # * $force_generation is set.
7208 # * any of the output dependencies is younger than the output
7209 # * the contents of the output is different (this can happen
7210 # if the project has been populated with a file listed in
7211 # @common_files since the last run).
7212 # Output's dependencies are split in two sets:
7213 # * dependencies which are also configure dependencies
7214 # These do not change between each Makefile.am
7215 # * other dependencies, specific to the Makefile.am being processed
7216 # (such as the Makefile.am itself, or any Makefile fragment
7217 # it includes).
7218 my $timestamp = mtime $out_file;
7219 if (! $force_generation
7220 && $configure_deps_greatest_timestamp < $timestamp
7221 && $output_deps_greatest_timestamp < $timestamp
7222 && $output eq contents ($out_file))
7223 {
7224 verb "$out_file unchanged";
7225 # No need to update.
7226 return;
7227 }
7229 if (-e $out_file)
7230 {
7231 unlink ($out_file)
7232 or fatal "cannot remove $out_file: $!\n";
7233 }
7235 my $gm_file = new Automake::XFile "> $out_file";
7236 verb "creating $out_file";
7237 print $gm_file $output;
7238 }
7240 ################################################################
7245 ################################################################
7247 # Print usage information.
7248 sub usage ()
7249 {
7250 print "Usage: $0 [OPTION] ... [Makefile]...
7252 Generate Makefile.in for configure from Makefile.am.
7254 Operation modes:
7255 --help print this help, then exit
7256 --version print version number, then exit
7257 -v, --verbose verbosely list files processed
7258 --no-force only update Makefile.in's that are out of date
7259 -W, --warnings=CATEGORY report the warnings falling in CATEGORY
7261 Dependency tracking:
7262 -i, --ignore-deps disable dependency tracking code
7263 --include-deps enable dependency tracking code
7265 Flavors:
7266 --cygnus assume program is part of Cygnus-style tree
7267 --foreign set strictness to foreign
7268 --gnits set strictness to gnits
7269 --gnu set strictness to gnu
7271 Library files:
7272 -a, --add-missing add missing standard files to package
7273 --libdir=DIR directory storing library files
7274 -c, --copy with -a, copy missing files (default is symlink)
7275 -f, --force-missing force update of standard files
7277 ";
7278 Automake::ChannelDefs::usage;
7280 my ($last, @lcomm);
7281 $last = '';
7282 foreach my $iter (sort ((@common_files, @common_sometimes)))
7283 {
7284 push (@lcomm, $iter) unless $iter eq $last;
7285 $last = $iter;
7286 }
7288 my @four;
7289 print "\nFiles which are automatically distributed, if found:\n";
7290 format USAGE_FORMAT =
7291 @<<<<<<<<<<<<<<<< @<<<<<<<<<<<<<<<< @<<<<<<<<<<<<<<<< @<<<<<<<<<<<<<<<<
7292 $four[0], $four[1], $four[2], $four[3]
7293 .
7294 $~ = "USAGE_FORMAT";
7296 my $cols = 4;
7297 my $rows = int(@lcomm / $cols);
7298 my $rest = @lcomm % $cols;
7300 if ($rest)
7301 {
7302 $rows++;
7303 }
7304 else
7305 {
7306 $rest = $cols;
7307 }
7309 for (my $y = 0; $y < $rows; $y++)
7310 {
7311 @four = ("", "", "", "");
7312 for (my $x = 0; $x < $cols; $x++)
7313 {
7314 last if $y + 1 == $rows && $x == $rest;
7316 my $idx = (($x > $rest)
7317 ? ($rows * $rest + ($rows - 1) * ($x - $rest))
7318 : ($rows * $x));
7320 $idx += $y;
7321 $four[$x] = $lcomm[$idx];
7322 }
7323 write;
7324 }
7326 print "\nReport bugs to <bug-automake\@gnu.org>.\n";
7328 # --help always returns 0 per GNU standards.
7329 exit 0;
7330 }
7333 # &version ()
7334 # -----------
7335 # Print version information
7336 sub version ()
7337 {
7338 print <<EOF;
7339 automake (GNU $PACKAGE) $VERSION
7340 Written by Tom Tromey <tromey\@redhat.com>.
7342 Copyright 2004 Free Software Foundation, Inc.
7343 This is free software; see the source for copying conditions. There is NO
7344 warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
7345 EOF
7346 # --version always returns 0 per GNU standards.
7347 exit 0;
7348 }
7350 ################################################################
7352 # Parse command line.
7353 sub parse_arguments ()
7354 {
7355 # Start off as gnu.
7356 set_strictness ('gnu');
7358 my $cli_where = new Automake::Location;
7359 my %cli_options =
7360 (
7361 'libdir:s' => \$libdir,
7362 'gnu' => sub { set_strictness ('gnu'); },
7363 'gnits' => sub { set_strictness ('gnits'); },
7364 'cygnus' => sub { set_global_option ('cygnus', $cli_where); },
7365 'foreign' => sub { set_strictness ('foreign'); },
7366 'include-deps' => sub { unset_global_option ('no-dependencies'); },
7367 'i|ignore-deps' => sub { set_global_option ('no-dependencies',
7368 $cli_where); },
7369 'no-force' => sub { $force_generation = 0; },
7370 'f|force-missing' => \$force_missing,
7371 'o|output-dir:s' => \$output_directory,
7372 'a|add-missing' => \$add_missing,
7373 'c|copy' => \$copy_missing,
7374 'v|verbose' => sub { setup_channel 'verb', silent => 0; },
7375 'W|warnings:s' => \&parse_warnings,
7376 # These long options (--Werror and --Wno-error) for backward
7377 # compatibility. Use -Werror and -Wno-error today.
7378 'Werror' => sub { parse_warnings 'W', 'error'; },
7379 'Wno-error' => sub { parse_warnings 'W', 'no-error'; },
7380 );
7381 use Getopt::Long;
7382 Getopt::Long::config ("bundling", "pass_through");
7384 # See if --version or --help is used. We want to process these before
7385 # anything else because the GNU Coding Standards require us to
7386 # `exit 0' after processing these options, and we can't guarantee this
7387 # if we treat other options first. (Handling other options first
7388 # could produce error diagnostics, and in this condition it is
7389 # confusing if Automake does `exit 0'.)
7390 my %cli_options_1st_pass =
7391 (
7392 'version' => \&version,
7393 'help' => \&usage,
7394 # Recognize all other options (and their arguments) but do nothing.
7395 map { $_ => sub {} } (keys %cli_options)
7396 );
7397 my @ARGV_backup = @ARGV;
7398 Getopt::Long::GetOptions %cli_options_1st_pass
7399 or exit 1;
7400 @ARGV = @ARGV_backup;
7402 # Now *really* process the options. This time we know
7403 # that --help and --version are not present.
7404 Getopt::Long::GetOptions %cli_options
7405 or exit 1;
7407 if (defined $output_directory)
7408 {
7409 msg 'obsolete', "`--output-dir' is deprecated\n";
7410 }
7411 else
7412 {
7413 # In the next release we'll remove this entirely.
7414 $output_directory = '.';
7415 }
7417 my $errspec = 0;
7418 foreach my $arg (@ARGV)
7419 {
7420 if ($arg =~ /^-./)
7421 {
7422 fatal ("unrecognized option `$arg'\n"
7423 . "Try `$0 --help' for more information.");
7424 }
7426 # Handle $local:$input syntax.
7427 my ($local, @rest) = split (/:/, $arg);
7428 @rest = ("$local.in",) unless @rest;
7429 my $input = locate_am @rest;
7430 if ($input)
7431 {
7432 push @input_files, $input;
7433 $output_files{$input} = join (':', ($local, @rest));
7434 }
7435 else
7436 {
7437 error "no Automake input file found for `$arg'";
7438 $errspec = 1;
7439 }
7440 }
7441 fatal "no input file found among supplied arguments"
7442 if $errspec && ! @input_files;
7443 }
7445 ################################################################
7447 # Parse the WARNINGS environment variable.
7448 parse_WARNINGS;
7450 # Parse command line.
7451 parse_arguments;
7453 $configure_ac = require_configure_ac;
7455 # Do configure.ac scan only once.
7456 scan_autoconf_files;
7458 if (! @input_files)
7459 {
7460 my $msg = '';
7461 $msg = "\nDid you forget AC_CONFIG_FILES([Makefile]) in $configure_ac?"
7462 if -f 'Makefile.am';
7463 fatal ("no `Makefile.am' found for any configure output$msg");
7464 }
7466 # Now do all the work on each file.
7467 foreach my $file (@input_files)
7468 {
7469 ($am_file = $file) =~ s/\.in$//;
7470 if (! -f ($am_file . '.am'))
7471 {
7472 error "`$am_file.am' does not exist";
7473 }
7474 else
7475 {
7476 # Any warning setting now local to this Makefile.am.
7477 dup_channel_setup;
7479 generate_makefile ($am_file . '.am', $file);
7481 # Back out any warning setting.
7482 drop_channel_setup;
7483 }
7484 }
7486 exit $exit_code;
7489 ### Setup "GNU" style for perl-mode and cperl-mode.
7490 ## Local Variables:
7491 ## perl-indent-level: 2
7492 ## perl-continued-statement-offset: 2
7493 ## perl-continued-brace-offset: 0
7494 ## perl-brace-offset: 0
7495 ## perl-brace-imaginary-offset: 0
7496 ## perl-label-offset: -2
7497 ## cperl-indent-level: 2
7498 ## cperl-brace-offset: 0
7499 ## cperl-continued-brace-offset: 0
7500 ## cperl-label-offset: -2
7501 ## cperl-extra-newline-before-brace: t
7502 ## cperl-merge-trailing-else: nil
7503 ## cperl-continued-statement-offset: 2
7504 ## End: