| blob | 94d9ed70eb5de28bec64fa002b1773798203df36 |
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, 2003
10 # 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 ':', $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 # The file to use when generating rules for this language.
80 # The default is 'depend2'.
81 'rule_file' => "\$",
83 # Name of the linking variable (LINK).
84 'linker' => "\$",
85 # Content of the linking variable.
86 'link' => "\$",
88 # Name of the linker variable (LD).
89 'lder' => "\$",
90 # Content of the linker variable ($(CC)).
91 'ld' => "\$",
93 # Flag to specify the output file (-o).
94 'output_flag' => "\$",
95 '_finish' => "\$",
97 # This is a subroutine which is called whenever we finally
98 # determine the context in which a source file will be
99 # compiled.
100 '_target_hook' => "\$");
103 sub finish ($)
104 {
105 my ($self) = @_;
106 if (defined $self->_finish)
107 {
108 &{$self->_finish} ();
109 }
110 }
112 sub target_hook ($$$$)
113 {
114 my ($self) = @_;
115 if (defined $self->_target_hook)
116 {
117 &{$self->_target_hook} (@_);
118 }
119 }
121 package Automake;
123 use strict;
124 use Automake::Config;
125 use Automake::General;
126 use Automake::XFile;
127 use Automake::Channels;
128 use Automake::ChannelDefs;
129 use Automake::Configure_ac;
130 use Automake::FileUtils;
131 use Automake::Location;
132 use Automake::Condition qw/TRUE FALSE/;
133 use Automake::DisjConditions;
134 use Automake::Options;
135 use Automake::Version;
136 use Automake::Variable;
137 use Automake::VarDef;
138 use Automake::Rule;
139 use Automake::RuleDef;
140 use Automake::Wrap 'makefile_wrap';
141 use File::Basename;
142 use Carp;
144 ## ----------- ##
145 ## Constants. ##
146 ## ----------- ##
148 # Some regular expressions. One reason to put them here is that it
149 # makes indentation work better in Emacs.
151 # Writing singled-quoted-$-terminated regexes is a pain because
152 # perl-mode thinks of $' as the ${'} variable (instead of a $ followed
153 # by a closing quote. Letting perl-mode think the quote is not closed
154 # leads to all sort of misindentations. On the other hand, defining
155 # regexes as double-quoted strings is far less readable. So usually
156 # we will write:
157 #
158 # $REGEX = '^regex_value' . "\$";
160 my $IGNORE_PATTERN = '^\s*##([^#\n].*)?\n';
161 my $WHITE_PATTERN = '^\s*' . "\$";
162 my $COMMENT_PATTERN = '^#';
163 my $TARGET_PATTERN='[$a-zA-Z_.@%][-.a-zA-Z0-9_(){}/$+@%]*';
164 # A rule has three parts: a list of targets, a list of dependencies,
165 # and optionally actions.
166 my $RULE_PATTERN =
167 "^($TARGET_PATTERN(?:(?:\\\\\n|\\s)+$TARGET_PATTERN)*) *:([^=].*|)\$";
169 # Only recognize leading spaces, not leading tabs. If we recognize
170 # leading tabs here then we need to make the reader smarter, because
171 # otherwise it will think rules like `foo=bar; \' are errors.
172 my $ASSIGNMENT_PATTERN = '^ *([^ \t=:+]*)\s*([:+]?)=\s*(.*)' . "\$";
173 # This pattern recognizes a Gnits version id and sets $1 if the
174 # release is an alpha release. We also allow a suffix which can be
175 # used to extend the version number with a "fork" identifier.
176 my $GNITS_VERSION_PATTERN = '\d+\.\d+([a-z]|\.\d+)?(-[A-Za-z0-9]+)?';
178 my $IF_PATTERN = '^if\s+(!?)\s*([A-Za-z][A-Za-z0-9_]*)\s*(?:#.*)?' . "\$";
179 my $ELSE_PATTERN =
180 '^else(?:\s+(!?)\s*([A-Za-z][A-Za-z0-9_]*))?\s*(?:#.*)?' . "\$";
181 my $ENDIF_PATTERN =
182 '^endif(?:\s+(!?)\s*([A-Za-z][A-Za-z0-9_]*))?\s*(?:#.*)?' . "\$";
183 my $PATH_PATTERN = '(\w|[/.-])+';
184 # This will pass through anything not of the prescribed form.
185 my $INCLUDE_PATTERN = ('^include\s+'
186 . '((\$\(top_srcdir\)/' . $PATH_PATTERN . ')'
187 . '|(\$\(srcdir\)/' . $PATH_PATTERN . ')'
188 . '|([^/\$]' . $PATH_PATTERN . '))\s*(#.*)?' . "\$");
190 # Match `-d' as a command-line argument in a string.
191 my $DASH_D_PATTERN = "(^|\\s)-d(\\s|\$)";
192 # Directories installed during 'install-exec' phase.
193 my $EXEC_DIR_PATTERN =
194 '^(?:bin|sbin|libexec|sysconf|localstate|lib|pkglib|.*exec.*)' . "\$";
196 # Values for AC_CANONICAL_*
197 use constant AC_CANONICAL_HOST => 1;
198 use constant AC_CANONICAL_SYSTEM => 2;
200 # Values indicating when something should be cleaned.
201 use constant MOSTLY_CLEAN => 0;
202 use constant CLEAN => 1;
203 use constant DIST_CLEAN => 2;
204 use constant MAINTAINER_CLEAN => 3;
206 # Libtool files.
207 my @libtool_files = qw(ltmain.sh config.guess config.sub);
208 # ltconfig appears here for compatibility with old versions of libtool.
209 my @libtool_sometimes = qw(ltconfig ltcf-c.sh ltcf-cxx.sh ltcf-gcj.sh);
211 # Commonly found files we look for and automatically include in
212 # DISTFILES.
213 my @common_files =
214 (qw(ABOUT-GNU ABOUT-NLS AUTHORS BACKLOG COPYING COPYING.DOC COPYING.LIB
215 COPYING.LESSER ChangeLog INSTALL NEWS README THANKS TODO
216 ansi2knr.1 ansi2knr.c compile config.guess config.rpath config.sub
217 configure configure.ac configure.in depcomp elisp-comp
218 install-sh libversion.in mdate-sh missing mkinstalldirs
219 py-compile texinfo.tex ylwrap),
220 @libtool_files, @libtool_sometimes);
222 # Commonly used files we auto-include, but only sometimes.
223 my @common_sometimes =
224 qw(aclocal.m4 acconfig.h config.h.top config.h.bot stamp-vti);
226 # Standard directories from the GNU Coding Standards, and additional
227 # pkg* directories from Automake. Stored in a hash for fast member check.
228 my %standard_prefix =
229 map { $_ => 1 } (qw(bin data exec include info lib libexec lisp
230 localstate man man1 man2 man3 man4 man5 man6
231 man7 man8 man9 oldinclude pkgdatadir
232 pkgincludedir pkglibdir sbin sharedstate
233 sysconf));
235 # Copyright on generated Makefile.ins.
236 my $gen_copyright = "\
237 # Copyright (C) 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003
238 # Free Software Foundation, Inc.
239 # This Makefile.in is free software; the Free Software Foundation
240 # gives unlimited permission to copy and/or distribute it,
241 # with or without modifications, as long as this notice is preserved.
243 # This program is distributed in the hope that it will be useful,
244 # but WITHOUT ANY WARRANTY, to the extent permitted by law; without
245 # even the implied warranty of MERCHANTABILITY or FITNESS FOR A
246 # PARTICULAR PURPOSE.
247 ";
249 # These constants are returned by lang_*_rewrite functions.
250 # LANG_SUBDIR means that the resulting object file should be in a
251 # subdir if the source file is. In this case the file name cannot
252 # have `..' components.
253 use constant LANG_IGNORE => 0;
254 use constant LANG_PROCESS => 1;
255 use constant LANG_SUBDIR => 2;
257 # These are used when keeping track of whether an object can be built
258 # by two different paths.
259 use constant COMPILE_LIBTOOL => 1;
260 use constant COMPILE_ORDINARY => 2;
262 # We can't always associate a location to a variable or a rule,
263 # when its defined by Automake. We use INTERNAL in this case.
264 use constant INTERNAL => new Automake::Location;
265 \f
267 ## ---------------------------------- ##
268 ## Variables related to the options. ##
269 ## ---------------------------------- ##
271 # TRUE if we should always generate Makefile.in.
272 my $force_generation = 1;
274 # From the Perl manual.
275 my $symlink_exists = (eval 'symlink ("", "");', $@ eq '');
277 # TRUE if missing standard files should be installed.
278 my $add_missing = 0;
280 # TRUE if we should copy missing files; otherwise symlink if possible.
281 my $copy_missing = 0;
283 # TRUE if we should always update files that we know about.
284 my $force_missing = 0;
287 ## ---------------------------------------- ##
288 ## Variables filled during files scanning. ##
289 ## ---------------------------------------- ##
291 # Name of the configure.ac file.
292 my $configure_ac;
294 # Files found by scanning configure.ac for LIBOBJS.
295 my %libsources = ();
297 # Names used in AC_CONFIG_HEADER call.
298 my @config_headers = ();
299 # Where AC_CONFIG_HEADER appears.
300 my $config_header_location;
302 # Names used in AC_CONFIG_LINKS call.
303 my @config_links = ();
305 # Directory where output files go. Actually, output files are
306 # relative to this directory.
307 my $output_directory;
309 # List of Makefile.am's to process, and their corresponding outputs.
310 my @input_files = ();
311 my %output_files = ();
313 # Complete list of Makefile.am's that exist.
314 my @configure_input_files = ();
316 # List of files in AC_CONFIG_FILES/AC_OUTPUT without Makefile.am's,
317 # and their outputs.
318 my @other_input_files = ();
319 # Where the last AC_CONFIG_FILES/AC_OUTPUT appears.
320 my %ac_config_files_location = ();
322 # List of directories to search for configure-required files. This
323 # can be set by AC_CONFIG_AUX_DIR.
324 my @config_aux_path = qw(. .. ../..);
325 my $config_aux_dir = '';
326 my $config_aux_dir_set_in_configure_in = 0;
328 # Whether AM_GNU_GETTEXT has been seen in configure.ac.
329 my $seen_gettext = 0;
330 # Whether AM_GNU_GETTEXT([external]) is used.
331 my $seen_gettext_external = 0;
332 # Where AM_GNU_GETTEXT appears.
333 my $ac_gettext_location;
335 # TRUE if we've seen AC_CANONICAL_(HOST|SYSTEM).
336 my $seen_canonical = 0;
337 my $canonical_location;
339 # Where AM_MAINTAINER_MODE appears.
340 my $seen_maint_mode;
342 # Actual version we've seen.
343 my $package_version = '';
345 # Where version is defined.
346 my $package_version_location;
348 # TRUE if we've seen AC_ENABLE_MULTILIB.
349 my $seen_multilib = 0;
351 # TRUE if we've seen AM_PROG_CC_C_O
352 my $seen_cc_c_o = 0;
354 # Where AM_INIT_AUTOMAKE is called;
355 my $seen_init_automake = 0;
357 # TRUE if we've seen AM_AUTOMAKE_VERSION.
358 my $seen_automake_version = 0;
360 # Hash table of discovered configure substitutions. Keys are names,
361 # values are `FILE:LINE' strings which are used by error message
362 # generation.
363 my %configure_vars = ();
365 # Files included by $configure_ac.
366 my @configure_deps = ();
368 # Greatest timestamp of configure's dependencies.
369 my $configure_deps_greatest_timestamp = 0;
371 # Hash table of AM_CONDITIONAL variables seen in configure.
372 my %configure_cond = ();
374 # This maps extensions onto language names.
375 my %extension_map = ();
377 # List of the DIST_COMMON files we discovered while reading
378 # configure.in
379 my $configure_dist_common = '';
381 # This maps languages names onto objects.
382 my %languages = ();
384 # List of targets we must always output.
385 # FIXME: Complete, and remove falsely required targets.
386 my %required_targets =
387 (
388 'all' => 1,
389 'dvi' => 1,
390 'pdf' => 1,
391 'ps' => 1,
392 'info' => 1,
393 'install-info' => 1,
394 'install' => 1,
395 'install-data' => 1,
396 'install-exec' => 1,
397 'uninstall' => 1,
399 # FIXME: Not required, temporary hacks.
400 # Well, actually they are sort of required: the -recursive
401 # targets will run them anyway...
402 'dvi-am' => 1,
403 'pdf-am' => 1,
404 'ps-am' => 1,
405 'info-am' => 1,
406 'install-data-am' => 1,
407 'install-exec-am' => 1,
408 'installcheck-am' => 1,
409 'uninstall-am' => 1,
411 'install-man' => 1,
412 );
414 # This is set to 1 when Automake needs to be run again.
415 # (For instance, this happens when an auxiliary file such as
416 # depcomp is added after the toplevel Makefile.in -- which
417 # should distribute depcomp -- has been generated.)
418 my $automake_needs_to_reprocess_all_files = 0;
420 # If a file name appears as a key in this hash, then it has already
421 # been checked for. This variable is local to the "require file"
422 # functions.
423 my %require_file_found = ();
425 # The name of the Makefile currently being processed.
426 my $am_file = 'BUG';
427 \f
429 ################################################################
431 ## ------------------------------------------ ##
432 ## Variables reset by &initialize_per_input. ##
433 ## ------------------------------------------ ##
435 # Basename and relative dir of the input file.
436 my $am_file_name;
437 my $am_relative_dir;
439 # Same but wrt Makefile.in.
440 my $in_file_name;
441 my $relative_dir;
443 # Greatest timestamp of the output's dependencies (excluding
444 # configure's dependencies).
445 my $output_deps_greatest_timestamp;
447 # These two variables are used when generating each Makefile.in.
448 # They hold the Makefile.in until it is ready to be printed.
449 my $output_rules;
450 my $output_vars;
451 my $output_trailer;
452 my $output_all;
453 my $output_header;
455 # This is the conditional stack, updated on if/else/endif, and
456 # used to build Condition objects.
457 my @cond_stack;
459 # This holds the set of included files.
460 my @include_stack;
462 # This holds a list of directories which we must create at `dist'
463 # time. This is used in some strange scenarios involving weird
464 # AC_OUTPUT commands.
465 my %dist_dirs;
467 # List of dependencies for the obvious targets.
468 my @all;
469 my @check;
470 my @check_tests;
472 # Keys in this hash table are files to delete. The associated
473 # value tells when this should happen (MOSTLY_CLEAN, DIST_CLEAN, etc.)
474 my %clean_files;
476 # Keys in this hash table are object files or other files in
477 # subdirectories which need to be removed. This only holds files
478 # which are created by compilations. The value in the hash indicates
479 # when the file should be removed.
480 my %compile_clean_files;
482 # Keys in this hash table are directories where we expect to build a
483 # libtool object. We use this information to decide what directories
484 # to delete.
485 my %libtool_clean_directories;
487 # Value of `$(SOURCES)', used by tags.am.
488 my @sources;
489 # Sources which go in the distribution.
490 my @dist_sources;
492 # This hash maps object file names onto their corresponding source
493 # file names. This is used to ensure that each object is created
494 # by a single source file.
495 my %object_map;
497 # This hash maps object file names onto an integer value representing
498 # whether this object has been built via ordinary compilation or
499 # libtool compilation (the COMPILE_* constants).
500 my %object_compilation_map;
503 # This keeps track of the directories for which we've already
504 # created dirstamp code.
505 my %directory_map;
507 # All .P files.
508 my %dep_files;
510 # This is a list of all targets to run during "make dist".
511 my @dist_targets;
513 # Keys in this hash are the basenames of files which must depend on
514 # ansi2knr. Values are either the empty string, or the directory in
515 # which the ANSI source file appears; the directory must have a
516 # trailing `/'.
517 my %de_ansi_files;
519 # This is the name of the redirect `all' target to use.
520 my $all_target;
522 # This keeps track of which extensions we've seen (that we care
523 # about).
524 my %extension_seen;
526 # This is random scratch space for the language finish functions.
527 # Don't randomly overwrite it; examine other uses of keys first.
528 my %language_scratch;
530 # We keep track of which objects need special (per-executable)
531 # handling on a per-language basis.
532 my %lang_specific_files;
534 # This is set when `handle_dist' has finished. Once this happens,
535 # we should no longer push on dist_common.
536 my $handle_dist_run;
538 # Used to store a set of linkers needed to generate the sources currently
539 # under consideration.
540 my %linkers_used;
542 # True if we need `LINK' defined. This is a hack.
543 my $need_link;
545 # Was get_object_extension run?
546 # FIXME: This is a hack. a better switch should be found.
547 my $get_object_extension_was_run;
549 ################################################################
551 # var_SUFFIXES_trigger ($TYPE, $VALUE)
552 # ------------------------------------
553 # This is called by Automake::Variable::define() when SUFFIXES
554 # is defined ($TYPE eq '') or appended ($TYPE eq '+').
555 # The work here needs to be performed as a side-effect of the
556 # macro_define() call because SUFFIXES definitions impact
557 # on $KNOWN_EXTENSIONS_PATTERN which is used used when parsing
558 # the input am file.
559 sub var_SUFFIXES_trigger ($$)
560 {
561 my ($type, $value) = @_;
562 accept_extensions (split (' ', $value));
563 }
564 Automake::Variable::hook ('SUFFIXES', &var_SUFFIXES_trigger);
566 ################################################################
568 ## --------------------------------- ##
569 ## Forward subroutine declarations. ##
570 ## --------------------------------- ##
571 sub register_language (%);
572 sub file_contents_internal ($$$%);
573 sub define_files_variable ($\@$$);
576 # &initialize_per_input ()
577 # ------------------------
578 # (Re)-Initialize per-Makefile.am variables.
579 sub initialize_per_input ()
580 {
581 reset_local_duplicates ();
583 $am_file_name = '';
584 $am_relative_dir = '';
586 $in_file_name = '';
587 $relative_dir = '';
589 $output_deps_greatest_timestamp = 0;
591 $output_rules = '';
592 $output_vars = '';
593 $output_trailer = '';
594 $output_all = '';
595 $output_header = '';
597 Automake::Options::reset;
598 Automake::Variable::reset;
599 Automake::Rule::reset;
601 @cond_stack = ();
603 @include_stack = ();
605 %dist_dirs = ();
607 @all = ();
608 @check = ();
609 @check_tests = ();
611 %clean_files = ();
613 @sources = ();
614 @dist_sources = ();
616 %object_map = ();
617 %object_compilation_map = ();
619 %directory_map = ();
621 %dep_files = ();
623 @dist_targets = ();
625 %de_ansi_files = ();
627 $all_target = '';
629 %extension_seen = ();
631 %language_scratch = ();
633 %lang_specific_files = ();
635 $handle_dist_run = 0;
637 $need_link = 0;
639 $get_object_extension_was_run = 0;
641 %compile_clean_files = ();
643 # We always include `.'. This isn't strictly correct.
644 %libtool_clean_directories = ('.' => 1);
645 }
648 ################################################################
650 # Initialize our list of languages that are internally supported.
652 # C.
653 register_language ('name' => 'c',
654 'Name' => 'C',
655 'config_vars' => ['CC'],
656 'ansi' => 1,
657 'autodep' => '',
658 'flags' => ['CFLAGS', 'CPPFLAGS'],
659 'compiler' => 'COMPILE',
660 'compile' => '$(CC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS) $(CPPFLAGS) $(AM_CFLAGS) $(CFLAGS)',
661 'lder' => 'CCLD',
662 'ld' => '$(CC)',
663 'linker' => 'LINK',
664 'link' => '$(CCLD) $(AM_CFLAGS) $(CFLAGS) $(AM_LDFLAGS) $(LDFLAGS) -o $@',
665 'compile_flag' => '-c',
666 'extensions' => ['.c'],
667 '_finish' => \&lang_c_finish);
669 # C++.
670 register_language ('name' => 'cxx',
671 'Name' => 'C++',
672 'config_vars' => ['CXX'],
673 'linker' => 'CXXLINK',
674 'link' => '$(CXXLD) $(AM_CXXFLAGS) $(CXXFLAGS) $(AM_LDFLAGS) $(LDFLAGS) -o $@',
675 'autodep' => 'CXX',
676 'flags' => ['CXXFLAGS', 'CPPFLAGS'],
677 'compile' => '$(CXX) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS) $(CPPFLAGS) $(AM_CXXFLAGS) $(CXXFLAGS)',
678 'compiler' => 'CXXCOMPILE',
679 'compile_flag' => '-c',
680 'output_flag' => '-o',
681 'lder' => 'CXXLD',
682 'ld' => '$(CXX)',
683 'pure' => 1,
684 'extensions' => ['.c++', '.cc', '.cpp', '.cxx', '.C']);
686 # Objective C.
687 register_language ('name' => 'objc',
688 'Name' => 'Objective C',
689 'config_vars' => ['OBJC'],
690 'linker' => 'OBJCLINK',,
691 'link' => '$(OBJCLD) $(AM_OBJCFLAGS) $(OBJCFLAGS) $(AM_LDFLAGS) $(LDFLAGS) -o $@',
692 'autodep' => 'OBJC',
693 'flags' => ['OBJCFLAGS', 'CPPFLAGS'],
694 'compile' => '$(OBJC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS) $(CPPFLAGS) $(AM_OBJCFLAGS) $(OBJCFLAGS)',
695 'compiler' => 'OBJCCOMPILE',
696 'compile_flag' => '-c',
697 'output_flag' => '-o',
698 'lder' => 'OBJCLD',
699 'ld' => '$(OBJC)',
700 'pure' => 1,
701 'extensions' => ['.m']);
703 # Headers.
704 register_language ('name' => 'header',
705 'Name' => 'Header',
706 'extensions' => ['.h', '.H', '.hxx', '.h++', '.hh',
707 '.hpp', '.inc'],
708 # No output.
709 'output_extensions' => sub { return () },
710 # Nothing to do.
711 '_finish' => sub { });
713 # Yacc (C & C++).
714 register_language ('name' => 'yacc',
715 'Name' => 'Yacc',
716 'config_vars' => ['YACC'],
717 'flags' => ['YFLAGS'],
718 'compile' => '$(YACC) $(YFLAGS) $(AM_YFLAGS)',
719 'compiler' => 'YACCCOMPILE',
720 'extensions' => ['.y'],
721 'output_extensions' => sub { (my $ext = $_[0]) =~ tr/y/c/;
722 return ($ext,) },
723 'rule_file' => 'yacc',
724 '_finish' => \&lang_yacc_finish,
725 '_target_hook' => \&lang_yacc_target_hook);
726 register_language ('name' => 'yaccxx',
727 'Name' => 'Yacc (C++)',
728 'config_vars' => ['YACC'],
729 'rule_file' => 'yacc',
730 'flags' => ['YFLAGS'],
731 'compiler' => 'YACCCOMPILE',
732 'compile' => '$(YACC) $(YFLAGS) $(AM_YFLAGS)',
733 'extensions' => ['.y++', '.yy', '.yxx', '.ypp'],
734 'output_extensions' => sub { (my $ext = $_[0]) =~ tr/y/c/;
735 return ($ext,) },
736 '_finish' => \&lang_yacc_finish,
737 '_target_hook' => \&lang_yacc_target_hook);
739 # Lex (C & C++).
740 register_language ('name' => 'lex',
741 'Name' => 'Lex',
742 'config_vars' => ['LEX'],
743 'rule_file' => 'lex',
744 'flags' => ['LFLAGS'],
745 'compile' => '$(LEX) $(LFLAGS) $(AM_LFLAGS)',
746 'compiler' => 'LEXCOMPILE',
747 'extensions' => ['.l'],
748 'output_extensions' => sub { (my $ext = $_[0]) =~ tr/l/c/;
749 return ($ext,) },
750 '_finish' => \&lang_lex_finish,
751 '_target_hook' => \&lang_lex_target_hook);
752 register_language ('name' => 'lexxx',
753 'Name' => 'Lex (C++)',
754 'config_vars' => ['LEX'],
755 'rule_file' => 'lex',
756 'flags' => ['LFLAGS'],
757 'compile' => '$(LEX) $(LFLAGS) $(AM_LFLAGS)',
758 'compiler' => 'LEXCOMPILE',
759 'extensions' => ['.l++', '.ll', '.lxx', '.lpp'],
760 'output_extensions' => sub { (my $ext = $_[0]) =~ tr/l/c/;
761 return ($ext,) },
762 '_finish' => \&lang_lex_finish,
763 '_target_hook' => \&lang_lex_target_hook);
765 # Assembler.
766 register_language ('name' => 'asm',
767 'Name' => 'Assembler',
768 'config_vars' => ['CCAS', 'CCASFLAGS'],
770 'flags' => ['CCASFLAGS'],
771 # Users can set AM_ASFLAGS to includes DEFS, INCLUDES,
772 # or anything else required. They can also set AS.
773 'compile' => '$(CCAS) $(AM_CCASFLAGS) $(CCASFLAGS)',
774 'compiler' => 'CCASCOMPILE',
775 'compile_flag' => '-c',
776 'extensions' => ['.s', '.S'],
778 # With assembly we still use the C linker.
779 '_finish' => \&lang_c_finish);
781 # Fortran 77
782 register_language ('name' => 'f77',
783 'Name' => 'Fortran 77',
784 'linker' => 'F77LINK',
785 'link' => '$(F77LD) $(AM_FFLAGS) $(FFLAGS) $(AM_LDFLAGS) $(LDFLAGS) -o $@',
786 'flags' => ['FFLAGS'],
787 'compile' => '$(F77) $(AM_FFLAGS) $(FFLAGS)',
788 'compiler' => 'F77COMPILE',
789 'compile_flag' => '-c',
790 'output_flag' => '-o',
791 'lder' => 'F77LD',
792 'ld' => '$(F77)',
793 'pure' => 1,
794 'extensions' => ['.f', '.for', '.f90']);
796 # Preprocessed Fortran 77
797 #
798 # The current support for preprocessing Fortran 77 just involves
799 # passing `$(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS)
800 # $(CPPFLAGS)' as additional flags to the Fortran 77 compiler, since
801 # this is how GNU Make does it; see the `GNU Make Manual, Edition 0.51
802 # for `make' Version 3.76 Beta' (specifically, from info file
803 # `(make)Catalogue of Rules').
804 #
805 # A better approach would be to write an Autoconf test
806 # (i.e. AC_PROG_FPP) for a Fortran 77 preprocessor, because not all
807 # Fortran 77 compilers know how to do preprocessing. The Autoconf
808 # macro AC_PROG_FPP should test the Fortran 77 compiler first for
809 # preprocessing capabilities, and then fall back on cpp (if cpp were
810 # available).
811 register_language ('name' => 'ppf77',
812 'Name' => 'Preprocessed Fortran 77',
813 'config_vars' => ['F77'],
814 'linker' => 'F77LINK',
815 'link' => '$(F77LD) $(AM_FFLAGS) $(FFLAGS) $(AM_LDFLAGS) $(LDFLAGS) -o $@',
816 'lder' => 'F77LD',
817 'ld' => '$(F77)',
818 'flags' => ['FFLAGS', 'CPPFLAGS'],
819 'compiler' => 'PPF77COMPILE',
820 'compile' => '$(F77) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS) $(CPPFLAGS) $(AM_FFLAGS) $(FFLAGS)',
821 'compile_flag' => '-c',
822 'output_flag' => '-o',
823 'pure' => 1,
824 'extensions' => ['.F']);
826 # Ratfor.
827 register_language ('name' => 'ratfor',
828 'Name' => 'Ratfor',
829 'config_vars' => ['F77'],
830 'linker' => 'F77LINK',
831 'link' => '$(F77LD) $(AM_FFLAGS) $(FFLAGS) $(AM_LDFLAGS) $(LDFLAGS) -o $@',
832 'lder' => 'F77LD',
833 'ld' => '$(F77)',
834 'flags' => ['RFLAGS', 'FFLAGS'],
835 # FIXME also FFLAGS.
836 'compile' => '$(F77) $(AM_FFLAGS) $(FFLAGS) $(AM_RFLAGS) $(RFLAGS)',
837 'compiler' => 'RCOMPILE',
838 'compile_flag' => '-c',
839 'output_flag' => '-o',
840 'pure' => 1,
841 'extensions' => ['.r']);
843 # Java via gcj.
844 register_language ('name' => 'java',
845 'Name' => 'Java',
846 'config_vars' => ['GCJ'],
847 'linker' => 'GCJLINK',
848 'link' => '$(GCJLD) $(AM_GCJFLAGS) $(GCJFLAGS) $(AM_LDFLAGS) $(LDFLAGS) -o $@',
849 'autodep' => 'GCJ',
850 'flags' => ['GCJFLAGS'],
851 'compile' => '$(GCJ) $(AM_GCJFLAGS) $(GCJFLAGS)',
852 'compiler' => 'GCJCOMPILE',
853 'compile_flag' => '-c',
854 'output_flag' => '-o',
855 'lder' => 'GCJLD',
856 'ld' => '$(GCJ)',
857 'pure' => 1,
858 'extensions' => ['.java', '.class', '.zip', '.jar']);
860 ################################################################
862 # Error reporting functions.
864 # err_am ($MESSAGE, [%OPTIONS])
865 # -----------------------------
866 # Uncategorized errors about the current Makefile.am.
867 sub err_am ($;%)
868 {
869 msg_am ('error', @_);
870 }
872 # err_ac ($MESSAGE, [%OPTIONS])
873 # -----------------------------
874 # Uncategorized errors about configure.ac.
875 sub err_ac ($;%)
876 {
877 msg_ac ('error', @_);
878 }
880 # msg_am ($CHANNEL, $MESSAGE, [%OPTIONS])
881 # ---------------------------------------
882 # Messages about about the current Makefile.am.
883 sub msg_am ($$;%)
884 {
885 my ($channel, $msg, %opts) = @_;
886 msg $channel, "${am_file}.am", $msg, %opts;
887 }
889 # msg_ac ($CHANNEL, $MESSAGE, [%OPTIONS])
890 # ---------------------------------------
891 # Messages about about configure.ac.
892 sub msg_ac ($$;%)
893 {
894 my ($channel, $msg, %opts) = @_;
895 msg $channel, $configure_ac, $msg, %opts;
896 }
898 ################################################################
900 # subst ($TEXT)
901 # -------------
902 # Return a configure-style substitution using the indicated text.
903 # We do this to avoid having the substitutions directly in automake.in;
904 # when we do that they are sometimes removed and this causes confusion
905 # and bugs.
906 sub subst ($)
907 {
908 my ($text) = @_;
909 return '@' . $text . '@';
910 }
912 ################################################################
915 # $BACKPATH
916 # &backname ($REL-DIR)
917 # --------------------
918 # If I `cd $REL-DIR', then to come back, I should `cd $BACKPATH'.
919 # For instance `src/foo' => `../..'.
920 # Works with non strictly increasing paths, i.e., `src/../lib' => `..'.
921 sub backname ($)
922 {
923 my ($file) = @_;
924 my @res;
925 foreach (split (/\//, $file))
926 {
927 next if $_ eq '.' || $_ eq '';
928 if ($_ eq '..')
929 {
930 pop @res;
931 }
932 else
933 {
934 push (@res, '..');
935 }
936 }
937 return join ('/', @res) || '.';
938 }
940 ################################################################
943 # Handle AUTOMAKE_OPTIONS variable. Return 1 on error, 0 otherwise.
944 sub handle_options
945 {
946 my $var = var ('AUTOMAKE_OPTIONS');
947 if ($var)
948 {
949 # FIXME: We should disallow conditional definitions of AUTOMAKE_OPTIONS.
950 if (process_option_list ($var->rdef (TRUE)->location,
951 $var->value_as_list_recursive (TRUE)))
952 {
953 return 1;
954 }
955 }
957 if ($strictness == GNITS)
958 {
959 set_option ('readme-alpha', INTERNAL);
960 set_option ('std-options', INTERNAL);
961 set_option ('check-news', INTERNAL);
962 }
964 return 0;
965 }
968 # get_object_extension ($OUT)
969 # ---------------------------
970 # Return object extension. Just once, put some code into the output.
971 # OUT is the name of the output file
972 sub get_object_extension
973 {
974 my ($out) = @_;
976 # Maybe require libtool library object files.
977 my $extension = '.$(OBJEXT)';
978 $extension = '.lo' if ($out =~ /\.la$/);
980 # Check for automatic de-ANSI-fication.
981 $extension = '$U' . $extension
982 if option 'ansi2knr';
984 $get_object_extension_was_run = 1;
986 return $extension;
987 }
990 # Call finish function for each language that was used.
991 sub handle_languages
992 {
993 if (! option 'no-dependencies')
994 {
995 # Include auto-dep code. Don't include it if DEP_FILES would
996 # be empty.
997 if (&saw_sources_p (0) && keys %dep_files)
998 {
999 # Set location of depcomp.
1000 &define_variable ('depcomp', "\$(SHELL) $config_aux_dir/depcomp",
1001 INTERNAL);
1002 &define_variable ('am__depfiles_maybe', 'depfiles', INTERNAL);
1004 require_conf_file ("$am_file.am", FOREIGN, 'depcomp');
1006 my @deplist = sort keys %dep_files;
1008 # We define this as a conditional variable because BSD
1009 # make can't handle backslashes for continuing comments on
1010 # the following line.
1011 define_pretty_variable ('DEP_FILES',
1012 new Automake::Condition ('AMDEP_TRUE'),
1013 INTERNAL, @deplist);
1015 # Generate each `include' individually. Irix 6 make will
1016 # not properly include several files resulting from a
1017 # variable expansion; generating many separate includes
1018 # seems safest.
1019 $output_rules .= "\n";
1020 foreach my $iter (@deplist)
1021 {
1022 $output_rules .= (subst ('AMDEP_TRUE')
1023 . subst ('am__include')
1024 . ' '
1025 . subst ('am__quote')
1026 . $iter
1027 . subst ('am__quote')
1028 . "\n");
1029 }
1031 # Compute the set of directories to remove in distclean-depend.
1032 my @depdirs = uniq (map { dirname ($_) } @deplist);
1033 $output_rules .= &file_contents ('depend',
1034 new Automake::Location,
1035 DEPDIRS => "@depdirs");
1036 }
1037 }
1038 else
1039 {
1040 &define_variable ('depcomp', '', INTERNAL);
1041 &define_variable ('am__depfiles_maybe', '', INTERNAL);
1042 }
1044 my %done;
1046 # Is the c linker needed?
1047 my $needs_c = 0;
1048 foreach my $ext (sort keys %extension_seen)
1049 {
1050 next unless $extension_map{$ext};
1052 my $lang = $languages{$extension_map{$ext}};
1054 my $rule_file = $lang->rule_file || 'depend2';
1056 # Get information on $LANG.
1057 my $pfx = $lang->autodep;
1058 my $fpfx = ($pfx eq '') ? 'CC' : $pfx;
1060 my ($AMDEP, $FASTDEP) =
1061 (option 'no-dependencies' || $lang->autodep eq 'no')
1062 ? ('FALSE', 'FALSE') : ('AMDEP', "am__fastdep$fpfx");
1064 my %transform = ('EXT' => $ext,
1065 'PFX' => $pfx,
1066 'FPFX' => $fpfx,
1067 'AMDEP' => $AMDEP,
1068 'FASTDEP' => $FASTDEP,
1069 '-c' => $lang->compile_flag || '',
1070 'MORE-THAN-ONE'
1071 => (count_files_for_language ($lang->name) > 1));
1073 # Generate the appropriate rules for this extension.
1074 if (((! option 'no-dependencies') && $lang->autodep ne 'no')
1075 || defined $lang->compile)
1076 {
1077 # Some C compilers don't support -c -o. Use it only if really
1078 # needed.
1079 my $output_flag = $lang->output_flag || '';
1080 $output_flag = '-o'
1081 if (! $output_flag
1082 && $lang->name eq 'c'
1083 && option 'subdir-objects');
1085 # Compute a possible derived extension.
1086 # This is not used by depend2.am.
1087 my $der_ext = (&{$lang->output_extensions} ($ext))[0];
1089 $output_rules .=
1090 file_contents ($rule_file,
1091 new Automake::Location,
1092 %transform,
1093 GENERIC => 1,
1095 'DERIVED-EXT' => $der_ext,
1097 # In this situation we know that the
1098 # object is in this directory, so
1099 # $(DEPDIR) is the correct location for
1100 # dependencies.
1101 DEPBASE => '$(DEPDIR)/$*',
1102 BASE => '$*',
1103 SOURCE => '$<',
1104 OBJ => '$@',
1105 OBJOBJ => '$@',
1106 LTOBJ => '$@',
1108 COMPILE => '$(' . $lang->compiler . ')',
1109 LTCOMPILE => '$(LT' . $lang->compiler . ')',
1110 -o => $output_flag);
1111 }
1113 # Now include code for each specially handled object with this
1114 # language.
1115 my %seen_files = ();
1116 foreach my $file (@{$lang_specific_files{$lang->name}})
1117 {
1118 my ($derived, $source, $obj, $myext) = split (' ', $file);
1120 # We might see a given object twice, for instance if it is
1121 # used under different conditions.
1122 next if defined $seen_files{$obj};
1123 $seen_files{$obj} = 1;
1125 prog_error ("found " . $lang->name .
1126 " in handle_languages, but compiler not defined")
1127 unless defined $lang->compile;
1129 my $obj_compile = $lang->compile;
1131 # Rewrite each occurrence of `AM_$flag' in the compile
1132 # rule into `${derived}_$flag' if it exists.
1133 for my $flag (@{$lang->flags})
1134 {
1135 my $val = "${derived}_$flag";
1136 $obj_compile =~ s/\(AM_$flag\)/\($val\)/
1137 if set_seen ($val);
1138 }
1140 my $obj_ltcompile = '$(LIBTOOL) --mode=compile ' . $obj_compile;
1142 # We _need_ `-o' for per object rules.
1143 my $output_flag = $lang->output_flag || '-o';
1145 my $depbase = dirname ($obj);
1146 $depbase = ''
1147 if $depbase eq '.';
1148 $depbase .= '/'
1149 unless $depbase eq '';
1150 $depbase .= '$(DEPDIR)/' . basename ($obj);
1152 # Support for deansified files in subdirectories is ugly
1153 # enough to deserve an explanation.
1154 #
1155 # A Note about normal ansi2knr processing first. On
1156 #
1157 # AUTOMAKE_OPTIONS = ansi2knr
1158 # bin_PROGRAMS = foo
1159 # foo_SOURCES = foo.c
1160 #
1161 # we generate rules similar to:
1162 #
1163 # foo: foo$U.o; link ...
1164 # foo$U.o: foo$U.c; compile ...
1165 # foo_.c: foo.c; ansi2knr ...
1166 #
1167 # this is fairly compact, and will call ansi2knr depending
1168 # on the value of $U (`' or `_').
1169 #
1170 # It's harder with subdir sources. On
1171 #
1172 # AUTOMAKE_OPTIONS = ansi2knr
1173 # bin_PROGRAMS = foo
1174 # foo_SOURCES = sub/foo.c
1175 #
1176 # we have to create foo_.c in the current directory.
1177 # (Unless the user asks 'subdir-objects'.) This is important
1178 # in case the same file (`foo.c') is compiled from other
1179 # directories with different cpp options: foo_.c would
1180 # be preprocessed for only one set of options if it were
1181 # put in the subdirectory.
1182 #
1183 # Because foo$U.o must be built from either foo_.c or
1184 # sub/foo.c we can't be as concise as in the first example.
1185 # Instead we output
1186 #
1187 # foo: foo$U.o; link ...
1188 # foo_.o: foo_.c; compile ...
1189 # foo.o: sub/foo.c; compile ...
1190 # foo_.c: foo.c; ansi2knr ...
1191 #
1192 # This is why we'll now transform $rule_file twice
1193 # if we detect this case.
1194 # A first time we output the compile rule with `$U'
1195 # replaced by `_' and the source directory removed,
1196 # and another time we simply remove `$U'.
1197 #
1198 # Note that at this point $source (as computed by
1199 # &handle_single_transform_list) is `sub/foo$U.c'.
1200 # This can be confusing: it can be used as-is when
1201 # subdir-objects is set, otherwise you have to know
1202 # it really means `foo_.c' or `sub/foo.c'.
1203 my $objdir = dirname ($obj);
1204 my $srcdir = dirname ($source);
1205 if ($lang->ansi && $obj =~ /\$U/)
1206 {
1207 prog_error "`$obj' contains \$U, but `$source' doesn't."
1208 if $source !~ /\$U/;
1210 (my $source_ = $source) =~ s/\$U/_/g;
1211 # Explicitly clean the _.c files if they are in
1212 # a subdirectory. (In the current directory they get
1213 # erased by a `rm -f *_.c' rule.)
1214 $clean_files{$source_} = MOSTLY_CLEAN
1215 if $objdir ne '.';
1216 # Output an additional rule if _.c and .c are not in
1217 # the same directory. (_.c is always in $objdir.)
1218 if ($objdir ne $srcdir)
1219 {
1220 (my $obj_ = $obj) =~ s/\$U/_/g;
1221 (my $depbase_ = $depbase) =~ s/\$U/_/g;
1222 $source_ = basename ($source_);
1224 $output_rules .=
1225 file_contents ($rule_file,
1226 new Automake::Location,
1227 %transform,
1228 GENERIC => 0,
1230 DEPBASE => $depbase_,
1231 BASE => $obj_,
1232 SOURCE => $source_,
1233 OBJ => "$obj_$myext",
1234 OBJOBJ => "$obj_.obj",
1235 LTOBJ => "$obj_.lo",
1237 COMPILE => $obj_compile,
1238 LTCOMPILE => $obj_ltcompile,
1239 -o => $output_flag);
1240 $obj =~ s/\$U//g;
1241 $depbase =~ s/\$U//g;
1242 $source =~ s/\$U//g;
1243 }
1244 }
1246 $output_rules .=
1247 file_contents ($rule_file,
1248 new Automake::Location,
1249 %transform,
1250 GENERIC => 0,
1252 DEPBASE => $depbase,
1253 BASE => $obj,
1254 SOURCE => $source,
1255 # Use $myext and not `.o' here, in case
1256 # we are actually building a new source
1257 # file -- e.g. via yacc.
1258 OBJ => "$obj$myext",
1259 OBJOBJ => "$obj.obj",
1260 LTOBJ => "$obj.lo",
1262 COMPILE => $obj_compile,
1263 LTCOMPILE => $obj_ltcompile,
1264 -o => $output_flag);
1265 }
1267 # The rest of the loop is done once per language.
1268 next if defined $done{$lang};
1269 $done{$lang} = 1;
1271 # Load the language dependent Makefile chunks.
1272 my %lang = map { uc ($_) => 0 } keys %languages;
1273 $lang{uc ($lang->name)} = 1;
1274 $output_rules .= file_contents ('lang-compile',
1275 new Automake::Location,
1276 %transform, %lang);
1278 # If the source to a program consists entirely of code from a
1279 # `pure' language, for instance C++ for Fortran 77, then we
1280 # don't need the C compiler code. However if we run into
1281 # something unusual then we do generate the C code. There are
1282 # probably corner cases here that do not work properly.
1283 # People linking Java code to Fortran code deserve pain.
1284 $needs_c ||= ! $lang->pure;
1286 define_compiler_variable ($lang)
1287 if ($lang->compile);
1289 define_linker_variable ($lang)
1290 if ($lang->link);
1292 require_variables ("$am_file.am", $lang->Name . " source seen",
1293 TRUE, @{$lang->config_vars});
1295 # Call the finisher.
1296 $lang->finish;
1298 # Flags listed in `->flags' are user variables (per GNU Standards),
1299 # they should not be overridden in the Makefile...
1300 my @dont_override = @{$lang->flags};
1301 # ... and so is LDFLAGS.
1302 push @dont_override, 'LDFLAGS' if $lang->link;
1304 foreach my $flag (@dont_override)
1305 {
1306 my $var = var $flag;
1307 if ($var)
1308 {
1309 for my $cond ($var->conditions->conds)
1310 {
1311 if ($var->rdef ($cond)->owner == VAR_MAKEFILE)
1312 {
1313 msg_cond_var ('gnu', $cond, $flag,
1314 "`$flag' is a user variable, "
1315 . "you should not override it;\n"
1316 . "use `AM_$flag' instead.");
1317 }
1318 }
1319 }
1320 }
1321 }
1323 # If the project is entirely C++ or entirely Fortran 77 (i.e., 1
1324 # suffix rule was learned), don't bother with the C stuff. But if
1325 # anything else creeps in, then use it.
1326 $needs_c = 1
1327 if $need_link || suffix_rules_count > 1;
1329 if ($needs_c)
1330 {
1331 &define_compiler_variable ($languages{'c'})
1332 unless defined $done{$languages{'c'}};
1333 define_linker_variable ($languages{'c'});
1334 }
1335 }
1337 # Check to make sure a source defined in LIBOBJS is not explicitly
1338 # mentioned. This is a separate function (as opposed to being inlined
1339 # in handle_source_transform) because it isn't always appropriate to
1340 # do this check.
1341 sub check_libobjs_sources
1342 {
1343 my ($one_file, $unxformed) = @_;
1345 foreach my $prefix ('', 'EXTRA_', 'dist_', 'nodist_',
1346 'dist_EXTRA_', 'nodist_EXTRA_')
1347 {
1348 my @files;
1349 my $varname = $prefix . $one_file . '_SOURCES';
1350 my $var = var ($varname);
1351 if ($var)
1352 {
1353 @files = $var->value_as_list_recursive ('all');
1354 }
1355 elsif ($prefix eq '')
1356 {
1357 @files = ($unxformed . '.c');
1358 }
1359 else
1360 {
1361 next;
1362 }
1364 foreach my $file (@files)
1365 {
1366 err_var ($prefix . $one_file . '_SOURCES',
1367 "automatically discovered file `$file' should not" .
1368 " be explicitly mentioned")
1369 if defined $libsources{$file};
1370 }
1371 }
1372 }
1375 # @OBJECTS
1376 # handle_single_transform_list ($VAR, $TOPPARENT, $DERIVED, $OBJ, @FILES)
1377 # -----------------------------------------------------------------------
1378 # Does much of the actual work for handle_source_transform.
1379 # Arguments are:
1380 # $VAR is the name of the variable that the source filenames come from
1381 # $TOPPARENT is the name of the _SOURCES variable which is being processed
1382 # $DERIVED is the name of resulting executable or library
1383 # $OBJ is the object extension (e.g., `$U.lo')
1384 # @FILES is the list of source files to transform
1385 # Result is a list of the names of objects
1386 # %linkers_used will be updated with any linkers needed
1387 sub handle_single_transform_list ($$$$@)
1388 {
1389 my ($var, $topparent, $derived, $obj, @files) = @_;
1390 my @result = ();
1391 my $nonansi_obj = $obj;
1392 $nonansi_obj =~ s/\$U//g;
1394 # Turn sources into objects. We use a while loop like this
1395 # because we might add to @files in the loop.
1396 while (scalar @files > 0)
1397 {
1398 $_ = shift @files;
1400 # Configure substitutions in _SOURCES variables are errors.
1401 if (/^\@.*\@$/)
1402 {
1403 my $parent_msg = '';
1404 $parent_msg = "\nand is referred to from `$topparent'"
1405 if $topparent ne $var->name;
1406 err_var ($var,
1407 "`" . $var->name . "' includes configure substitution `$_'"
1408 . $parent_msg . ";\nconfigure " .
1409 "substitutions are not allowed in _SOURCES variables");
1410 next;
1411 }
1413 # If the source file is in a subdirectory then the `.o' is put
1414 # into the current directory, unless the subdir-objects option
1415 # is in effect.
1417 # Split file name into base and extension.
1418 next if ! /^(?:(.*)\/)?([^\/]*)($KNOWN_EXTENSIONS_PATTERN)$/;
1419 my $full = $_;
1420 my $directory = $1 || '';
1421 my $base = $2;
1422 my $extension = $3;
1424 # We must generate a rule for the object if it requires its own flags.
1425 my $renamed = 0;
1426 my ($linker, $object);
1428 # This records whether we've seen a derived source file (e.g.
1429 # yacc output).
1430 my $derived_source = 0;
1432 # This holds the `aggregate context' of the file we are
1433 # currently examining. If the file is compiled with
1434 # per-object flags, then it will be the name of the object.
1435 # Otherwise it will be `AM'. This is used by the target hook
1436 # language function.
1437 my $aggregate = 'AM';
1439 $extension = &derive_suffix ($extension, $nonansi_obj);
1440 my $lang;
1441 if ($extension_map{$extension} &&
1442 ($lang = $languages{$extension_map{$extension}}))
1443 {
1444 # Found the language, so see what it says.
1445 &saw_extension ($extension);
1447 # Note: computed subr call. The language rewrite function
1448 # should return one of the LANG_* constants. It could
1449 # also return a list whose first value is such a constant
1450 # and whose second value is a new source extension which
1451 # should be applied. This means this particular language
1452 # generates another source file which we must then process
1453 # further.
1454 my $subr = \&{'lang_' . $lang->name . '_rewrite'};
1455 my ($r, $source_extension)
1456 = &$subr ($directory, $base, $extension);
1457 # Skip this entry if we were asked not to process it.
1458 next if $r == LANG_IGNORE;
1460 # Now extract linker and other info.
1461 $linker = $lang->linker;
1463 my $this_obj_ext;
1464 if (defined $source_extension)
1465 {
1466 $this_obj_ext = $source_extension;
1467 $derived_source = 1;
1468 }
1469 elsif ($lang->ansi)
1470 {
1471 $this_obj_ext = $obj;
1472 }
1473 else
1474 {
1475 $this_obj_ext = $nonansi_obj;
1476 }
1477 $object = $base . $this_obj_ext;
1479 # Do we have per-executable flags for this executable?
1480 my $have_per_exec_flags = 0;
1481 foreach my $flag (@{$lang->flags})
1482 {
1483 if (set_seen ("${derived}_$flag"))
1484 {
1485 $have_per_exec_flags = 1;
1486 last;
1487 }
1488 }
1490 if ($have_per_exec_flags)
1491 {
1492 # We have a per-executable flag in effect for this
1493 # object. In this case we rewrite the object's
1494 # name to ensure it is unique. We also require
1495 # the `compile' program to deal with compilers
1496 # where `-c -o' does not work.
1498 # We choose the name `DERIVED_OBJECT' to ensure
1499 # (1) uniqueness, and (2) continuity between
1500 # invocations. However, this will result in a
1501 # name that is too long for losing systems, in
1502 # some situations. So we provide _SHORTNAME to
1503 # override.
1505 my $dname = $derived;
1506 my $var = var ($derived . '_SHORTNAME');
1507 if ($var)
1508 {
1509 # FIXME: should use the same Condition as
1510 # the _SOURCES variable. But this is really
1511 # silly overkill -- nobody should have
1512 # conditional shortnames.
1513 $dname = $var->variable_value;
1514 }
1515 $object = $dname . '-' . $object;
1517 require_conf_file ("$am_file.am", FOREIGN, 'compile')
1518 if $lang->name eq 'c';
1520 prog_error ($lang->name . " flags defined without compiler")
1521 if ! defined $lang->compile;
1523 $renamed = 1;
1524 }
1526 # If rewrite said it was ok, put the object into a
1527 # subdir.
1528 if ($r == LANG_SUBDIR && $directory ne '')
1529 {
1530 $object = $directory . '/' . $object;
1531 }
1533 # If doing dependency tracking, then we can't print
1534 # the rule. If we have a subdir object, we need to
1535 # generate an explicit rule. Actually, in any case
1536 # where the object is not in `.' we need a special
1537 # rule. The per-object rules in this case are
1538 # generated later, by handle_languages.
1539 if ($renamed || $directory ne '')
1540 {
1541 my $obj_sans_ext = substr ($object, 0,
1542 - length ($this_obj_ext));
1543 my $full_ansi = $full;
1544 if ($lang->ansi && option 'ansi2knr')
1545 {
1546 $full_ansi =~ s/$KNOWN_EXTENSIONS_PATTERN$/\$U$&/;
1547 $obj_sans_ext .= '$U';
1548 }
1550 my $val = ("$full_ansi $obj_sans_ext "
1551 # Only use $this_obj_ext in the derived
1552 # source case because in the other case we
1553 # *don't* want $(OBJEXT) to appear here.
1554 . ($derived_source ? $this_obj_ext : '.o'));
1556 # If we renamed the object then we want to use the
1557 # per-executable flag name. But if this is simply a
1558 # subdir build then we still want to use the AM_ flag
1559 # name.
1560 if ($renamed)
1561 {
1562 $val = "$derived $val";
1563 $aggregate = $derived;
1564 }
1565 else
1566 {
1567 $val = "AM $val";
1568 }
1570 # Each item on this list is a string consisting of
1571 # four space-separated values: the derived flag prefix
1572 # (e.g. for `foo_CFLAGS', it is `foo'), the name of the
1573 # source file, the base name of the output file, and
1574 # the extension for the object file.
1575 push (@{$lang_specific_files{$lang->name}}, $val);
1576 }
1577 }
1578 elsif ($extension eq $nonansi_obj)
1579 {
1580 # This is probably the result of a direct suffix rule.
1581 # In this case we just accept the rewrite.
1582 $object = "$base$extension";
1583 $linker = '';
1584 }
1585 else
1586 {
1587 # No error message here. Used to have one, but it was
1588 # very unpopular.
1589 # FIXME: we could potentially do more processing here,
1590 # perhaps treating the new extension as though it were a
1591 # new source extension (as above). This would require
1592 # more restructuring than is appropriate right now.
1593 next;
1594 }
1596 err_am "object `$object' created by `$full' and `$object_map{$object}'"
1597 if (defined $object_map{$object}
1598 && $object_map{$object} ne $full);
1600 my $comp_val = (($object =~ /\.lo$/)
1601 ? COMPILE_LIBTOOL : COMPILE_ORDINARY);
1602 (my $comp_obj = $object) =~ s/\.lo$/.\$(OBJEXT)/;
1603 if (defined $object_compilation_map{$comp_obj}
1604 && $object_compilation_map{$comp_obj} != 0
1605 # Only see the error once.
1606 && ($object_compilation_map{$comp_obj}
1607 != (COMPILE_LIBTOOL | COMPILE_ORDINARY))
1608 && $object_compilation_map{$comp_obj} != $comp_val)
1609 {
1610 err_am "object `$comp_obj' created both with libtool and without";
1611 }
1612 $object_compilation_map{$comp_obj} |= $comp_val;
1614 if (defined $lang)
1615 {
1616 # Let the language do some special magic if required.
1617 $lang->target_hook ($aggregate, $object, $full);
1618 }
1620 if ($derived_source)
1621 {
1622 prog_error ($lang->name . " has automatic dependency tracking")
1623 if $lang->autodep ne 'no';
1624 # Make sure this new source file is handled next. That will
1625 # make it appear to be at the right place in the list.
1626 unshift (@files, $object);
1627 # Distribute derived sources unless the source they are
1628 # derived from is not.
1629 &push_dist_common ($object)
1630 unless ($topparent =~ /^(?:nobase_)?nodist_/);
1631 next;
1632 }
1634 $linkers_used{$linker} = 1;
1636 push (@result, $object);
1638 if (! defined $object_map{$object})
1639 {
1640 my @dep_list = ();
1641 $object_map{$object} = $full;
1643 # If resulting object is in subdir, we need to make
1644 # sure the subdir exists at build time.
1645 if ($object =~ /\//)
1646 {
1647 # FIXME: check that $DIRECTORY is somewhere in the
1648 # project
1650 # For Java, the way we're handling it right now, a
1651 # `..' component doesn't make sense.
1652 if ($lang->name eq 'java' && $object =~ /(\/|^)\.\.\//)
1653 {
1654 err_am "`$full' should not contain a `..' component";
1655 }
1657 # Make sure object is removed by `make mostlyclean'.
1658 $compile_clean_files{$object} = MOSTLY_CLEAN;
1659 # If we have a libtool object then we also must remove
1660 # the ordinary .o.
1661 if ($object =~ /\.lo$/)
1662 {
1663 (my $xobj = $object) =~ s,lo$,\$(OBJEXT),;
1664 $compile_clean_files{$xobj} = MOSTLY_CLEAN;
1666 # Remove any libtool object in this directory.
1667 $libtool_clean_directories{$directory} = 1;
1668 }
1670 push (@dep_list, require_build_directory ($directory));
1672 # If we're generating dependencies, we also want
1673 # to make sure that the appropriate subdir of the
1674 # .deps directory is created.
1675 push (@dep_list,
1676 require_build_directory ($directory . '/$(DEPDIR)'))
1677 unless option 'no-dependencies';
1678 }
1680 &pretty_print_rule ($object . ':', "\t", @dep_list)
1681 if scalar @dep_list > 0;
1682 }
1684 # Transform .o or $o file into .P file (for automatic
1685 # dependency code).
1686 if ($lang && $lang->autodep ne 'no')
1687 {
1688 my $depfile = $object;
1689 $depfile =~ s/\.([^.]*)$/.P$1/;
1690 $depfile =~ s/\$\(OBJEXT\)$/o/;
1691 $dep_files{dirname ($depfile) . '/$(DEPDIR)/'
1692 . basename ($depfile)} = 1;
1693 }
1694 }
1696 return @result;
1697 }
1700 # $LINKER
1701 # define_objects_from_sources ($VAR, $OBJVAR, $NODEFINE, $ONE_FILE,
1702 # $OBJ, $PARENT, $TOPPARENT, $WHERE)
1703 # ---------------------------------------------------------------------
1704 # Define an _OBJECTS variable for a _SOURCES variable (or subvariable)
1705 #
1706 # Arguments are:
1707 # $VAR is the name of the _SOURCES variable
1708 # $OBJVAR is the name of the _OBJECTS variable if known (otherwise
1709 # it will be generated and returned).
1710 # $NODEFINE is a boolean: if true, $OBJVAR will not be defined (but
1711 # work done to determine the linker will be).
1712 # $ONE_FILE is the canonical (transformed) name of object to build
1713 # $OBJ is the object extension (i.e. either `.o' or `.lo').
1714 # $TOPPARENT is the _SOURCES variable being processed.
1715 # $WHERE context into which this definition is done
1716 #
1717 # Result is a pair ($LINKER, $OBJVAR):
1718 # $LINKER is a boolean, true if a linker is needed to deal with the objects
1719 sub define_objects_from_sources ($$$$$$$)
1720 {
1721 my ($var, $objvar, $nodefine, $one_file, $obj, $topparent, $where) = @_;
1723 my $needlinker = "";
1725 transform_variable_recursively
1726 ($var, $objvar, 'am__objects', $nodefine, $where,
1727 # The transform code to run on each filename.
1728 sub {
1729 my ($subvar, $val, $cond, $full_cond) = @_;
1730 my @trans = &handle_single_transform_list ($subvar, $topparent,
1731 $one_file, $obj, $val);
1732 $needlinker = "true" if @trans;
1733 return @trans;
1734 });
1736 return $needlinker;
1737 }
1740 # Handle SOURCE->OBJECT transform for one program or library.
1741 # Arguments are:
1742 # canonical (transformed) name of object to build
1743 # actual name of object to build
1744 # object extension (i.e. either `.o' or `$o'.
1745 # Return result is name of linker variable that must be used.
1746 # Empty return means just use `LINK'.
1747 sub handle_source_transform
1748 {
1749 # one_file is canonical name. unxformed is given name. obj is
1750 # object extension.
1751 my ($one_file, $unxformed, $obj, $where) = @_;
1753 my ($linker) = '';
1755 # No point in continuing if _OBJECTS is defined.
1756 return if reject_var ($one_file . '_OBJECTS',
1757 $one_file . '_OBJECTS should not be defined');
1759 my %used_pfx = ();
1760 my $needlinker;
1761 %linkers_used = ();
1762 foreach my $prefix ('', 'EXTRA_', 'dist_', 'nodist_',
1763 'dist_EXTRA_', 'nodist_EXTRA_')
1764 {
1765 my $varname = $prefix . $one_file . "_SOURCES";
1766 my $var = var $varname;
1767 next unless $var;
1769 # We are going to define _OBJECTS variables using the prefix.
1770 # Then we glom them all together. So we can't use the null
1771 # prefix here as we need it later.
1772 my $xpfx = ($prefix eq '') ? 'am_' : $prefix;
1774 # Keep track of which prefixes we saw.
1775 $used_pfx{$xpfx} = 1
1776 unless $prefix =~ /EXTRA_/;
1778 push @sources, "\$($varname)";
1779 if ($prefix !~ /^nodist_/)
1780 {
1781 # If the VAR wasn't defined conditionally, we add
1782 # it to DIST_SOURCES as is. Otherwise we create a
1783 # am__VAR_DIST variable which contains all possible values,
1784 # and add this variable to DIST_SOURCES.
1785 my $distvar = $varname;
1786 if ($var->has_conditional_contents)
1787 {
1788 $distvar = "am__${varname}_DIST";
1789 my @files =
1790 uniq ($var->value_as_list_recursive ('all'));
1791 define_pretty_variable ($distvar, TRUE, $where, @files);
1792 }
1793 push @dist_sources, "\$($distvar)"
1794 }
1796 $needlinker |=
1797 define_objects_from_sources ($varname,
1798 $xpfx . $one_file . '_OBJECTS',
1799 $prefix =~ /EXTRA_/,
1800 $one_file, $obj, $varname, $where);
1801 }
1802 if ($needlinker)
1803 {
1804 $linker ||= &resolve_linker (%linkers_used);
1805 }
1807 my @keys = sort keys %used_pfx;
1808 if (scalar @keys == 0)
1809 {
1810 &define_variable ($one_file . "_SOURCES", $unxformed . ".c", $where);
1811 push (@sources, $unxformed . '.c');
1812 push (@dist_sources, $unxformed . '.c');
1814 %linkers_used = ();
1815 my (@result) =
1816 &handle_single_transform_list ($one_file . '_SOURCES',
1817 $one_file . '_SOURCES',
1818 $one_file, $obj,
1819 "$unxformed.c");
1820 $linker ||= &resolve_linker (%linkers_used);
1821 define_pretty_variable ($one_file . '_OBJECTS', TRUE, $where, @result);
1822 }
1823 else
1824 {
1825 @keys = map { '$(' . $_ . $one_file . '_OBJECTS)' } @keys;
1826 define_pretty_variable ($one_file . '_OBJECTS', TRUE, $where, @keys);
1827 }
1829 # If we want to use `LINK' we must make sure it is defined.
1830 if ($linker eq '')
1831 {
1832 $need_link = 1;
1833 }
1835 return $linker;
1836 }
1839 # handle_lib_objects ($XNAME, $VAR)
1840 # ---------------------------------
1841 # Special-case ALLOCA and LIBOBJS substitutions in _LDADD or _LIBADD variables.
1842 # Also, generate _DEPENDENCIES variable if appropriate.
1843 # Arguments are:
1844 # transformed name of object being built, or empty string if no object
1845 # name of _LDADD/_LIBADD-type variable to examine
1846 # Returns 1 if LIBOBJS seen, 0 otherwise.
1847 sub handle_lib_objects
1848 {
1849 my ($xname, $varname) = @_;
1851 my $var = var ($varname);
1852 prog_error "handle_lib_objects: `$varname' undefined"
1853 unless $var;
1854 prog_error "handle_lib_objects: unexpected variable name `$varname'"
1855 unless $varname =~ /^(.*)(?:LIB|LD)ADD$/;
1856 my $prefix = $1 || 'AM_';
1858 my $seen_libobjs = 0;
1859 my $flagvar = 0;
1861 transform_variable_recursively
1862 ($varname, $xname . '_DEPENDENCIES', 'am__DEPENDENCIES',
1863 ! $xname, INTERNAL,
1864 # Transformation function, run on each filename.
1865 sub {
1866 my ($subvar, $val, $cond, $full_cond) = @_;
1868 if ($val =~ /^-/)
1869 {
1870 # Skip -lfoo and -Ldir silently; these are explicitly allowed.
1871 if ($val !~ /^-[lL]/ &&
1872 # Skip -dlopen and -dlpreopen; these are explicitly allowed
1873 # for Libtool libraries or programs. (Actually we are a bit
1874 # laxest here since this code also applies to non-libtool
1875 # libraries or programs, for which -dlopen and -dlopreopen
1876 # are pure non-sence. Diagnosting this doesn't seems very
1877 # important: the developer will quickly get complaints from
1878 # the linker.)
1879 $val !~ /^-dl(?:pre)?open$/ &&
1880 # Only get this error once.
1881 ! $flagvar)
1882 {
1883 $flagvar = 1;
1884 # FIXME: should display a stack of nested variables
1885 # as context when $var != $subvar.
1886 err_var ($var, "linker flags such as `$val' belong in "
1887 . "`${prefix}LDFLAGS");
1888 }
1889 return ();
1890 }
1891 elsif ($val !~ /^\@.*\@$/)
1892 {
1893 # Assume we have a file of some sort, and output it into the
1894 # dependency variable. Autoconf substitutions are not output;
1895 # rarely is a new dependency substituted into e.g. foo_LDADD
1896 # -- but bad things (e.g. -lX11) are routinely substituted.
1897 # Note that LIBOBJS and ALLOCA are exceptions to this rule,
1898 # and handled specially below.
1899 return $val;
1900 }
1901 elsif ($val =~ /^\@(LT)?LIBOBJS\@$/)
1902 {
1903 handle_LIBOBJS ($subvar, $full_cond, $1);
1904 $seen_libobjs = 1;
1905 return $val;
1906 }
1907 elsif ($val =~ /^\@(LT)?ALLOCA\@$/)
1908 {
1909 handle_ALLOCA ($subvar, $full_cond, $1);
1910 return $val;
1911 }
1912 else
1913 {
1914 return ();
1915 }
1916 });
1918 return $seen_libobjs;
1919 }
1921 sub handle_LIBOBJS ($$$)
1922 {
1923 my ($var, $cond, $lt) = @_;
1924 $lt ||= '';
1925 my $myobjext = ($1 ? 'l' : '') . 'o';
1927 $var->requires_variables ("\@${lt}LIBOBJS\@ used", $lt . 'LIBOBJS')
1928 if ! keys %libsources;
1930 foreach my $iter (keys %libsources)
1931 {
1932 if ($iter =~ /\.[cly]$/)
1933 {
1934 &saw_extension ($&);
1935 &saw_extension ('.c');
1936 }
1938 if ($iter =~ /\.h$/)
1939 {
1940 require_file_with_macro ($cond, $var, FOREIGN, $iter);
1941 }
1942 elsif ($iter ne 'alloca.c')
1943 {
1944 my $rewrite = $iter;
1945 $rewrite =~ s/\.c$/.P$myobjext/;
1946 $dep_files{'$(DEPDIR)/' . $rewrite} = 1;
1947 $rewrite = "^" . quotemeta ($iter) . "\$";
1948 # Only require the file if it is not a built source.
1949 my $bs = var ('BUILT_SOURCES');
1950 if (! $bs
1951 || ! grep (/$rewrite/, $bs->value_as_list_recursive ('all')))
1952 {
1953 require_file_with_macro ($cond, $var, FOREIGN, $iter);
1954 }
1955 }
1956 }
1957 }
1959 sub handle_ALLOCA ($$$)
1960 {
1961 my ($var, $cond, $lt) = @_;
1962 my $myobjext = ($lt ? 'l' : '') . 'o';
1963 $lt ||= '';
1964 $var->requires_variables ("\@${lt}ALLOCA\@ used", $lt . 'ALLOCA');
1965 $dep_files{'$(DEPDIR)/alloca.P' . $myobjext} = 1;
1966 require_file_with_macro ($cond, $var, FOREIGN, 'alloca.c');
1967 &saw_extension ('c');
1968 }
1970 # Canonicalize the input parameter
1971 sub canonicalize
1972 {
1973 my ($string) = @_;
1974 $string =~ tr/A-Za-z0-9_\@/_/c;
1975 return $string;
1976 }
1978 # Canonicalize a name, and check to make sure the non-canonical name
1979 # is never used. Returns canonical name. Arguments are name and a
1980 # list of suffixes to check for.
1981 sub check_canonical_spelling
1982 {
1983 my ($name, @suffixes) = @_;
1985 my $xname = &canonicalize ($name);
1986 if ($xname ne $name)
1987 {
1988 foreach my $xt (@suffixes)
1989 {
1990 reject_var ("$name$xt", "use `$xname$xt', not `$name$xt'");
1991 }
1992 }
1994 return $xname;
1995 }
1998 # handle_compile ()
1999 # -----------------
2000 # Set up the compile suite.
2001 sub handle_compile ()
2002 {
2003 return
2004 unless $get_object_extension_was_run;
2006 # Boilerplate.
2007 my $default_includes = '';
2008 if (! option 'nostdinc')
2009 {
2010 $default_includes = ' -I. -I$(srcdir)';
2012 my $var = var 'CONFIG_HEADER';
2013 if ($var)
2014 {
2015 foreach my $hdr (split (' ', $var->variable_value))
2016 {
2017 $default_includes .= ' -I' . dirname ($hdr);
2018 }
2019 }
2020 }
2022 my (@mostly_rms, @dist_rms);
2023 foreach my $item (sort keys %compile_clean_files)
2024 {
2025 if ($compile_clean_files{$item} == MOSTLY_CLEAN)
2026 {
2027 push (@mostly_rms, "\t-rm -f $item");
2028 }
2029 elsif ($compile_clean_files{$item} == DIST_CLEAN)
2030 {
2031 push (@dist_rms, "\t-rm -f $item");
2032 }
2033 else
2034 {
2035 prog_error 'invalid entry in %compile_clean_files';
2036 }
2037 }
2039 my ($coms, $vars, $rules) =
2040 &file_contents_internal (1, "$libdir/am/compile.am",
2041 new Automake::Location,
2042 ('DEFAULT_INCLUDES' => $default_includes,
2043 'MOSTLYRMS' => join ("\n", @mostly_rms),
2044 'DISTRMS' => join ("\n", @dist_rms)));
2045 $output_vars .= $vars;
2046 $output_rules .= "$coms$rules";
2048 # Check for automatic de-ANSI-fication.
2049 if (option 'ansi2knr')
2050 {
2051 my ($ansi2knr_filename, $ansi2knr_where) = @{option 'ansi2knr'};
2052 my $ansi2knr_dir = '';
2054 require_variables ($ansi2knr_where, "option `ansi2knr' is used",
2055 TRUE, "ANSI2KNR", "U");
2057 # topdir is where ansi2knr should be.
2058 if ($ansi2knr_filename eq 'ansi2knr')
2059 {
2060 # Only require ansi2knr files if they should appear in
2061 # this directory.
2062 require_file ($ansi2knr_where, FOREIGN,
2063 'ansi2knr.c', 'ansi2knr.1');
2065 # ansi2knr needs to be built before subdirs, so unshift it.
2066 unshift (@all, '$(ANSI2KNR)');
2067 }
2068 else
2069 {
2070 $ansi2knr_dir = dirname ($ansi2knr_filename);
2071 }
2073 $output_rules .= &file_contents ('ansi2knr',
2074 new Automake::Location,
2075 'ANSI2KNR-DIR' => $ansi2knr_dir);
2077 }
2078 }
2080 # handle_libtool ()
2081 # -----------------
2082 # Handle libtool rules.
2083 sub handle_libtool
2084 {
2085 return unless var ('LIBTOOL');
2087 # Libtool requires some files, but only at top level.
2088 require_conf_file_with_macro (TRUE, 'LIBTOOL', FOREIGN, @libtool_files)
2089 if $relative_dir eq '.';
2091 my @libtool_rms;
2092 foreach my $item (sort keys %libtool_clean_directories)
2093 {
2094 my $dir = ($item eq '.') ? '' : "$item/";
2095 # .libs is for Unix, _libs for DOS.
2096 push (@libtool_rms, "\t-rm -rf ${dir}.libs ${dir}_libs");
2097 }
2099 # Output the libtool compilation rules.
2100 $output_rules .= &file_contents ('libtool',
2101 new Automake::Location,
2102 LTRMS => join ("\n", @libtool_rms));
2103 }
2105 # handle_programs ()
2106 # ------------------
2107 # Handle C programs.
2108 sub handle_programs
2109 {
2110 my @proglist = &am_install_var ('progs', 'PROGRAMS',
2111 'bin', 'sbin', 'libexec', 'pkglib',
2112 'noinst', 'check');
2113 return if ! @proglist;
2115 my $seen_global_libobjs =
2116 var ('LDADD') && &handle_lib_objects ('', 'LDADD');
2118 foreach my $pair (@proglist)
2119 {
2120 my ($where, $one_file) = @$pair;
2122 my $seen_libobjs = 0;
2123 my $obj = &get_object_extension ($one_file);
2125 # Strip any $(EXEEXT) suffix the user might have added, or this
2126 # will confuse &handle_source_transform and &check_canonical_spelling.
2127 # We'll add $(EXEEXT) back later anyway.
2128 $one_file =~ s/\$\(EXEEXT\)$//;
2130 # Canonicalize names and check for misspellings.
2131 my $xname = &check_canonical_spelling ($one_file, '_LDADD', '_LDFLAGS',
2132 '_SOURCES', '_OBJECTS',
2133 '_DEPENDENCIES');
2135 $where->push_context ("while processing program `$one_file'");
2136 $where->set (INTERNAL->get);
2138 my $linker = &handle_source_transform ($xname, $one_file, $obj, $where);
2140 if (var ($xname . "_LDADD"))
2141 {
2142 $seen_libobjs = &handle_lib_objects ($xname, $xname . '_LDADD');
2143 }
2144 else
2145 {
2146 # User didn't define prog_LDADD override. So do it.
2147 &define_variable ($xname . '_LDADD', '$(LDADD)', $where);
2149 # This does a bit too much work. But we need it to
2150 # generate _DEPENDENCIES when appropriate.
2151 if (var ('LDADD'))
2152 {
2153 $seen_libobjs = &handle_lib_objects ($xname, 'LDADD');
2154 }
2155 }
2157 reject_var ($xname . '_LIBADD',
2158 "use `${xname}_LDADD', not `${xname}_LIBADD'");
2160 set_seen ($xname . '_DEPENDENCIES');
2161 set_seen ($xname . '_LDFLAGS');
2163 # Determine program to use for link.
2164 my $xlink;
2165 if (var ($xname . '_LINK'))
2166 {
2167 $xlink = $xname . '_LINK';
2168 }
2169 else
2170 {
2171 $xlink = $linker ? $linker : 'LINK';
2172 }
2174 # If the resulting program lies into a subdirectory,
2175 # make sure this directory will exist.
2176 my $dirstamp = require_build_directory_maybe ($one_file);
2178 $output_rules .= &file_contents ('program',
2179 $where,
2180 PROGRAM => $one_file,
2181 XPROGRAM => $xname,
2182 XLINK => $xlink,
2183 DIRSTAMP => $dirstamp,
2184 EXEEXT => '$(EXEEXT)');
2186 if ($seen_libobjs || $seen_global_libobjs)
2187 {
2188 if (var ($xname . '_LDADD'))
2189 {
2190 &check_libobjs_sources ($xname, $xname . '_LDADD');
2191 }
2192 elsif (var ('LDADD'))
2193 {
2194 &check_libobjs_sources ($xname, 'LDADD');
2195 }
2196 }
2197 }
2198 }
2201 # handle_libraries ()
2202 # -------------------
2203 # Handle libraries.
2204 sub handle_libraries
2205 {
2206 my @liblist = &am_install_var ('libs', 'LIBRARIES',
2207 'lib', 'pkglib', 'noinst', 'check');
2208 return if ! @liblist;
2210 my @prefix = am_primary_prefixes ('LIBRARIES', 0, 'lib', 'pkglib',
2211 'noinst', 'check');
2213 if (@prefix)
2214 {
2215 my $var = rvar ($prefix[0] . '_LIBRARIES');
2216 $var->requires_variables ('library used', 'RANLIB');
2217 }
2219 foreach my $pair (@liblist)
2220 {
2221 my ($where, $onelib) = @$pair;
2223 my $seen_libobjs = 0;
2224 # Check that the library fits the standard naming convention.
2225 if (basename ($onelib) !~ /^lib.*\.a/)
2226 {
2227 error $where, "`$onelib' is not a standard library name";
2228 }
2230 $where->push_context ("while processing library `$onelib'");
2231 $where->set (INTERNAL->get);
2233 my $obj = &get_object_extension ($onelib);
2235 # Canonicalize names and check for misspellings.
2236 my $xlib = &check_canonical_spelling ($onelib, '_LIBADD', '_SOURCES',
2237 '_OBJECTS', '_DEPENDENCIES',
2238 '_AR');
2240 if (! var ($xlib . '_AR'))
2241 {
2242 &define_variable ($xlib . '_AR', '$(AR) $(ARFLAGS)', $where);
2243 }
2245 # Generate support for conditional object inclusion in
2246 # libraries.
2247 if (var ($xlib . '_LIBADD'))
2248 {
2249 if (&handle_lib_objects ($xlib, $xlib . '_LIBADD'))
2250 {
2251 $seen_libobjs = 1;
2252 }
2253 }
2254 else
2255 {
2256 &define_variable ($xlib . "_LIBADD", '', $where);
2257 }
2259 reject_var ($xlib . '_LDADD',
2260 "use `${xlib}_LIBADD', not `${xlib}_LDADD'");
2262 # Make sure we at look at this.
2263 set_seen ($xlib . '_DEPENDENCIES');
2265 &handle_source_transform ($xlib, $onelib, $obj, $where);
2267 # If the resulting library lies into a subdirectory,
2268 # make sure this directory will exist.
2269 my $dirstamp = require_build_directory_maybe ($onelib);
2271 $output_rules .= &file_contents ('library',
2272 $where,
2273 LIBRARY => $onelib,
2274 XLIBRARY => $xlib,
2275 DIRSTAMP => $dirstamp);
2277 if ($seen_libobjs)
2278 {
2279 if (var ($xlib . '_LIBADD'))
2280 {
2281 &check_libobjs_sources ($xlib, $xlib . '_LIBADD');
2282 }
2283 }
2284 }
2285 }
2288 # handle_ltlibraries ()
2289 # ---------------------
2290 # Handle shared libraries.
2291 sub handle_ltlibraries
2292 {
2293 my @liblist = &am_install_var ('ltlib', 'LTLIBRARIES',
2294 'noinst', 'lib', 'pkglib', 'check');
2295 return if ! @liblist;
2297 my %instdirs;
2298 my @prefix = am_primary_prefixes ('LTLIBRARIES', 0, 'lib', 'pkglib',
2299 'noinst', 'check');
2301 if (@prefix)
2302 {
2303 my $var = rvar ($prefix[0] . '_LTLIBRARIES');
2304 $var->requires_variables ('Libtool library used', 'LIBTOOL');
2305 }
2307 my %liblocations = (); # Location (in Makefile.am) of each library.
2309 foreach my $key (@prefix)
2310 {
2311 # Get the installation directory of each library.
2312 (my $dir = $key) =~ s/^nobase_//;
2313 my $var = rvar ($key . '_LTLIBRARIES');
2314 for my $pair ($var->loc_and_value_as_list_recursive ('all'))
2315 {
2316 my ($where, $lib) = @$pair;
2317 # We reject libraries which are installed in several places,
2318 # because we don't handle this in the rules (think `-rpath').
2319 #
2320 # However, we allow the same library to be listed many times
2321 # for the same directory. This is for users who need setups
2322 # like
2323 # if COND1
2324 # lib_LTLIBRARIES = libfoo.la
2325 # endif
2326 # if COND2
2327 # lib_LTLIBRARIES = libfoo.la
2328 # endif
2329 #
2330 # Actually this will also allow
2331 # lib_LTLIBRARIES = libfoo.la libfoo.la
2332 # Diagnosing this case doesn't seem worth the plain (we'd
2333 # have to fill $instdirs on a per-condition basis, check
2334 # implied conditions, etc.)
2335 if (defined $instdirs{$lib} && $instdirs{$lib} ne $dir)
2336 {
2337 error ($where, "`$lib' is already going to be installed in "
2338 . "`$instdirs{$lib}'", partial => 1);
2339 error ($liblocations{$lib}, "`$lib' previously declared here");
2340 }
2341 else
2342 {
2343 $instdirs{$lib} = $dir;
2344 $liblocations{$lib} = $where->clone;
2345 }
2346 }
2347 }
2349 foreach my $pair (@liblist)
2350 {
2351 my ($where, $onelib) = @$pair;
2353 my $seen_libobjs = 0;
2354 my $obj = &get_object_extension ($onelib);
2356 # Canonicalize names and check for misspellings.
2357 my $xlib = &check_canonical_spelling ($onelib, '_LIBADD', '_LDFLAGS',
2358 '_SOURCES', '_OBJECTS',
2359 '_DEPENDENCIES');
2361 # Check that the library fits the standard naming convention.
2362 my $libname_rx = "^lib.*\.la";
2363 my $ldvar = var ("${xlib}_LDFLAGS") || var ('AM_LDFLAGS');
2364 my $ldvar2 = var ('LDFLAGS');
2365 if (($ldvar && grep (/-module/, $ldvar->value_as_list_recursive ('all')))
2366 || ($ldvar2
2367 && grep (/-module/, $ldvar2->value_as_list_recursive ('all'))))
2368 {
2369 # Relax name checking for libtool modules.
2370 $libname_rx = "\.la";
2371 }
2372 if (basename ($onelib) !~ /$libname_rx$/)
2373 {
2374 msg ('error-gnu/warn', $where,
2375 "`$onelib' is not a standard libtool library name");
2376 }
2378 $where->push_context ("while processing Libtool library `$onelib'");
2379 $where->set (INTERNAL->get);
2381 # Make sure we at look at these.
2382 set_seen ($xlib . '_LDFLAGS');
2383 set_seen ($xlib . '_DEPENDENCIES');
2385 # Generate support for conditional object inclusion in
2386 # libraries.
2387 if (var ($xlib . '_LIBADD'))
2388 {
2389 if (&handle_lib_objects ($xlib, $xlib . '_LIBADD'))
2390 {
2391 $seen_libobjs = 1;
2392 }
2393 }
2394 else
2395 {
2396 &define_variable ($xlib . "_LIBADD", '', $where);
2397 }
2399 reject_var ("${xlib}_LDADD",
2400 "use `${xlib}_LIBADD', not `${xlib}_LDADD'");
2403 my $linker = &handle_source_transform ($xlib, $onelib, $obj, $where);
2405 # Determine program to use for link.
2406 my $xlink;
2407 if (var ($xlib . '_LINK'))
2408 {
2409 $xlink = $xlib . '_LINK';
2410 }
2411 else
2412 {
2413 $xlink = $linker ? $linker : 'LINK';
2414 }
2416 my $rpath;
2417 if ($instdirs{$onelib} eq 'EXTRA'
2418 || $instdirs{$onelib} eq 'noinst'
2419 || $instdirs{$onelib} eq 'check')
2420 {
2421 # It's an EXTRA_ library, so we can't specify -rpath,
2422 # because we don't know where the library will end up.
2423 # The user probably knows, but generally speaking automake
2424 # doesn't -- and in fact configure could decide
2425 # dynamically between two different locations.
2426 $rpath = '';
2427 }
2428 else
2429 {
2430 $rpath = ('-rpath $(' . $instdirs{$onelib} . 'dir)');
2431 }
2433 # If the resulting library lies into a subdirectory,
2434 # make sure this directory will exist.
2435 my $dirstamp = require_build_directory_maybe ($onelib);
2437 # Remember to cleanup .libs/ in this directory.
2438 my $dirname = dirname $onelib;
2439 $libtool_clean_directories{$dirname} = 1;
2441 $output_rules .= &file_contents ('ltlibrary',
2442 $where,
2443 LTLIBRARY => $onelib,
2444 XLTLIBRARY => $xlib,
2445 RPATH => $rpath,
2446 XLINK => $xlink,
2447 DIRSTAMP => $dirstamp);
2448 if ($seen_libobjs)
2449 {
2450 if (var ($xlib . '_LIBADD'))
2451 {
2452 &check_libobjs_sources ($xlib, $xlib . '_LIBADD');
2453 }
2454 }
2455 }
2456 }
2458 # See if any _SOURCES variable were misspelled.
2459 sub check_typos ()
2460 {
2461 # It is ok if the user sets this particular variable.
2462 set_seen 'AM_LDFLAGS';
2464 foreach my $var (variables)
2465 {
2466 my $varname = $var->name;
2467 # A configure variable is always legitimate.
2468 next if exists $configure_vars{$varname};
2470 my $check = 0;
2471 foreach my $primary ('_SOURCES', '_LIBADD', '_LDADD', '_LDFLAGS',
2472 '_DEPENDENCIES')
2473 {
2474 if ($varname =~ /$primary$/)
2475 {
2476 $check = 1;
2477 last;
2478 }
2479 }
2480 next unless $check;
2482 for my $cond ($var->conditions->conds)
2483 {
2484 msg_var 'syntax', $var, "unused variable: `$varname'"
2485 unless $var->rdef ($cond)->seen;
2486 }
2487 }
2488 }
2491 # Handle scripts.
2492 sub handle_scripts
2493 {
2494 # NOTE we no longer automatically clean SCRIPTS, because it is
2495 # useful to sometimes distribute scripts verbatim. This happens
2496 # e.g. in Automake itself.
2497 &am_install_var ('-candist', 'scripts', 'SCRIPTS',
2498 'bin', 'sbin', 'libexec', 'pkgdata',
2499 'noinst', 'check');
2500 }
2505 ## ------------------------ ##
2506 ## Handling Texinfo files. ##
2507 ## ------------------------ ##
2509 # ($OUTFILE, $VFILE, @CLEAN_FILES)
2510 # &scan_texinfo_file ($FILENAME)
2511 # ------------------------------
2512 # $OUTFILE - name of the info file produced by $FILENAME.
2513 # $VFILE - name of the version.texi file used (undef if none).
2514 # @CLEAN_FILES - list of byproducts (indexes etc.)
2515 sub scan_texinfo_file ($)
2516 {
2517 my ($filename) = @_;
2519 # Some of the following extensions are always created, no matter
2520 # whether indexes are used or not. Other (like cps, fns, ... pgs)
2521 # are only created when they are used. We used to scan $FILENAME
2522 # for their use, but that is not enough: they could be used in
2523 # included files. We can't scan included files because we don't
2524 # know the include path. Therefore we always erase these files, no
2525 # matter whether they are used or not.
2526 #
2527 # (tmp is only created if an @macro is used and a certain e-TeX
2528 # feature is not available.)
2529 my %clean_suffixes =
2530 map { $_ => 1 } (qw(aux log toc tmp
2531 cp cps
2532 fn fns
2533 ky kys
2534 vr vrs
2535 tp tps
2536 pg pgs)); # grep 'new.*index' texinfo.tex
2538 my $texi = new Automake::XFile "< $filename";
2539 verb "reading $filename";
2541 my ($outfile, $vfile);
2542 while ($_ = $texi->getline)
2543 {
2544 if (/^\@setfilename +(\S+)/)
2545 {
2546 # Honor only the first @setfilename. (It's possible to have
2547 # more occurrences later if the manual shows examples of how
2548 # to use @setfilename...)
2549 next if $outfile;
2551 $outfile = $1;
2552 if ($outfile =~ /\.(.+)$/ && $1 ne 'info')
2553 {
2554 error ("$filename:$.",
2555 "output `$outfile' has unrecognized extension");
2556 return;
2557 }
2558 }
2559 # A "version.texi" file is actually any file whose name matches
2560 # "vers*.texi".
2561 elsif (/^\@include\s+(vers[^.]*\.texi)\s*$/)
2562 {
2563 $vfile = $1;
2564 }
2566 # Try to find new or unused indexes.
2568 # Creating a new category of index.
2569 elsif (/^\@def(code)?index (\w+)/)
2570 {
2571 $clean_suffixes{$2} = 1;
2572 $clean_suffixes{"$2s"} = 1;
2573 }
2575 # Merging an index into an another.
2576 elsif (/^\@syn(code)?index (\w+) (\w+)/)
2577 {
2578 delete $clean_suffixes{"$2s"};
2579 $clean_suffixes{"$3s"} = 1;
2580 }
2582 }
2584 if ($outfile eq '')
2585 {
2586 err_am "`$filename' missing \@setfilename";
2587 return;
2588 }
2590 my $infobase = basename ($filename);
2591 $infobase =~ s/\.te?xi(nfo)?$//;
2592 return ($outfile, $vfile,
2593 map { "$infobase.$_" } (sort keys %clean_suffixes));
2594 }
2597 # ($DIRSTAMP, @CLEAN_FILES)
2598 # output_texinfo_build_rules ($SOURCE, $DEST, $INSRC, @DEPENDENCIES)
2599 # ------------------------------------------------------------------
2600 # SOURCE - the source Texinfo file
2601 # DEST - the destination Info file
2602 # INSRC - wether DEST should be built in the source tree
2603 # DEPENDENCIES - known dependencies
2604 sub output_texinfo_build_rules ($$$@)
2605 {
2606 my ($source, $dest, $insrc, @deps) = @_;
2608 # Split `a.texi' into `a' and `.texi'.
2609 my ($spfx, $ssfx) = ($source =~ /^(.*?)(\.[^.]*)?$/);
2610 my ($dpfx, $dsfx) = ($dest =~ /^(.*?)(\.[^.]*)?$/);
2612 $ssfx ||= "";
2613 $dsfx ||= "";
2615 # We can output two kinds of rules: the "generic" rules use Make
2616 # suffix rules and are appropriate when $source and $dest do not lie
2617 # in a sub-directory; the "specific" rules are needed in the other
2618 # case.
2619 #
2620 # The former are output only once (this is not really apparent here,
2621 # but just remember that some logic deeper in Automake will not
2622 # output the same rule twice); while the later need to be output for
2623 # each Texinfo source.
2624 my $generic;
2625 my $makeinfoflags;
2626 my $sdir = dirname $source;
2627 if ($sdir eq '.' && dirname ($dest) eq '.')
2628 {
2629 $generic = 1;
2630 $makeinfoflags = '-I $(srcdir)';
2631 }
2632 else
2633 {
2634 $generic = 0;
2635 $makeinfoflags = "-I $sdir -I \$(srcdir)/$sdir";
2636 }
2638 # A directory can contain two kinds of info files: some built in the
2639 # source tree, and some built in the build tree. The rules are
2640 # different in each case. However we cannot output two different
2641 # set of generic rules. Because in-source builds are more usual, we
2642 # use generic rules in this case and fall back to "specific" rules
2643 # for build-dir builds. (It should not be a problem to invert this
2644 # if needed.)
2645 $generic = 0 unless $insrc;
2647 # We cannot use a suffix rule to build info files with an empty
2648 # extension. Otherwise we would output a single suffix inference
2649 # rule, with separate dependencies, as in
2650 #
2651 # .texi:
2652 # $(MAKEINFO) ...
2653 # foo.info: foo.texi
2654 #
2655 # which confuse Solaris make. (See the Autoconf manual for
2656 # details.) Therefore we use a specific rule in this case. This
2657 # applies to info files only (dvi and pdf files always have an
2658 # extension).
2659 my $generic_info = ($generic && $dsfx) ? 1 : 0;
2661 # If the resulting file lie into a subdirectory,
2662 # make sure this directory will exist.
2663 my $dirstamp = require_build_directory_maybe ($dest);
2665 my $dipfx = ($insrc ? '$(srcdir)/' : '') . $dpfx;
2667 $output_rules .= file_contents ('texibuild',
2668 new Automake::Location,
2669 DEPS => "@deps",
2670 DEST_PREFIX => $dpfx,
2671 DEST_INFO_PREFIX => $dipfx,
2672 DEST_SUFFIX => $dsfx,
2673 DIRSTAMP => $dirstamp,
2674 GENERIC => $generic,
2675 GENERIC_INFO => $generic_info,
2676 INSRC => $insrc,
2677 MAKEINFOFLAGS => $makeinfoflags,
2678 SOURCE => ($generic
2679 ? '$<' : $source),
2680 SOURCE_INFO => ($generic_info
2681 ? '$<' : $source),
2682 SOURCE_REAL => $source,
2683 SOURCE_SUFFIX => $ssfx,
2684 );
2685 return ($dirstamp, "$dpfx.dvi", "$dpfx.pdf", "$dpfx.ps", "$dpfx.html");
2686 }
2689 # $TEXICLEANS
2690 # handle_texinfo_helper ($info_texinfos)
2691 # --------------------------------------
2692 # Handle all Texinfo source; helper for handle_texinfo.
2693 sub handle_texinfo_helper ($)
2694 {
2695 my ($info_texinfos) = @_;
2696 my (@infobase, @info_deps_list, @texi_deps);
2697 my %versions;
2698 my $done = 0;
2699 my @texi_cleans;
2701 # Build a regex matching user-cleaned files.
2702 my $d = var 'DISTCLEANFILES';
2703 my $c = var 'CLEANFILES';
2704 my @f = ();
2705 push @f, $d->value_as_list_recursive (TRUE) if $d;
2706 push @f, $c->value_as_list_recursive (TRUE) if $c;
2707 @f = map { s|[^A-Za-z_0-9*\[\]\-]|\\$&|g; s|\*|[^/]*|g; $_; } @f;
2708 my $user_cleaned_files = '^(?:' . join ('|', @f) . ')$';
2710 foreach my $texi ($info_texinfos->value_as_list_recursive ('all'))
2711 {
2712 my $infobase = $texi;
2713 $infobase =~ s/\.(txi|texinfo|texi)$//;
2715 if ($infobase eq $texi)
2716 {
2717 # FIXME: report line number.
2718 err_am "texinfo file `$texi' has unrecognized extension";
2719 next;
2720 }
2722 push @infobase, $infobase;
2724 # If 'version.texi' is referenced by input file, then include
2725 # automatic versioning capability.
2726 my ($out_file, $vtexi, @clean_files) =
2727 scan_texinfo_file ("$relative_dir/$texi")
2728 or next;
2729 push (@texi_cleans, @clean_files);
2731 # If the Texinfo source is in a subdirectory, create the
2732 # resulting info in this subdirectory. If it is in the current
2733 # directory, try hard to not prefix "./" because it breaks the
2734 # generic rules.
2735 my $outdir = dirname ($texi) . '/';
2736 $outdir = "" if $outdir eq './';
2737 $out_file = $outdir . $out_file;
2739 # Until Automake 1.6.3, .info files were built in the
2740 # source tree. This was an obstacle to the support of
2741 # non-distributed .info files, and non-distributed .texi
2742 # files.
2743 #
2744 # * Non-distributed .texi files is important in some packages
2745 # where .texi files are built at make time, probably using
2746 # other binaries built in the package itself, maybe using
2747 # tools or information found on the build host. Because
2748 # these files are not distributed they are always rebuilt
2749 # at make time; they should therefore not lie in the source
2750 # directory. One plan was to support this using
2751 # nodist_info_TEXINFOS or something similar. (Doing this
2752 # requires some sanity checks. For instance Automake should
2753 # not allow:
2754 # dist_info_TEXINFO = foo.texi
2755 # nodist_foo_TEXINFO = included.texi
2756 # because a distributed file should never depend on a
2757 # non-distributed file.)
2758 #
2759 # * If .texi files are not distributed, then .info files should
2760 # not be distributed either. There are also cases where one
2761 # want to distribute .texi files, but do not want to
2762 # distribute the .info files. For instance the Texinfo package
2763 # distributes the tool used to build these files; it would
2764 # be a waste of space to distribute them. It's not clear
2765 # which syntax we should use to indicate that .info files should
2766 # not be distributed. Akim Demaille suggested that eventually
2767 # we switch to a new syntax:
2768 # | Maybe we should take some inspiration from what's already
2769 # | done in the rest of Automake. Maybe there is too much
2770 # | syntactic sugar here, and you want
2771 # | nodist_INFO = bar.info
2772 # | dist_bar_info_SOURCES = bar.texi
2773 # | bar_texi_DEPENDENCIES = foo.texi
2774 # | with a bit of magic to have bar.info represent the whole
2775 # | bar*info set. That's a lot more verbose that the current
2776 # | situation, but it is # not new, hence the user has less
2777 # | to learn.
2778 # |
2779 # | But there is still too much room for meaningless specs:
2780 # | nodist_INFO = bar.info
2781 # | dist_bar_info_SOURCES = bar.texi
2782 # | dist_PS = bar.ps something-written-by-hand.ps
2783 # | nodist_bar_ps_SOURCES = bar.texi
2784 # | bar_texi_DEPENDENCIES = foo.texi
2785 # | here bar.texi is dist_ in line 2, and nodist_ in 4.
2786 #
2787 # Back to the point, it should be clear that in order to support
2788 # non-distributed .info files, we need to build them in the
2789 # build tree, not in the source tree (non-distributed .texi
2790 # files are less of a problem, because we do not output build
2791 # rules for them). In Automake 1.7 .info build rules have been
2792 # largely cleaned up so that .info files get always build in the
2793 # build tree, even when distributed. The idea was that
2794 # (1) if during a VPATH build the .info file was found to be
2795 # absent or out-of-date (in the source tree or in the
2796 # build tree), Make would rebuild it in the build tree.
2797 # If an up-to-date source-tree of the .info file existed,
2798 # make would not rebuild it in the build tree.
2799 # (2) having two copies of .info files, one in the source tree
2800 # and one (newer) in the build tree is not a problem
2801 # because `make dist' always pick files in the build tree
2802 # first.
2803 # However it turned out the be a bad idea for several reasons:
2804 # * Tru64, OpenBSD, and FreeBSD (not NetBSD) Make do behave
2805 # like GNU Make on point (1) above. These implementations
2806 # of Make would always rebuild .info files in the build
2807 # tree, even if such files were up to date in the source
2808 # tree. Consequently, it was impossible the perform a VPATH
2809 # build of a package containing Texinfo files using these
2810 # Make implementations.
2811 # (Refer to the Autoconf Manual, section "Limitation of
2812 # Make", paragraph "VPATH", item "target lookup", for
2813 # an account of the differences between these
2814 # implementations.)
2815 # * The GNU Coding Standards require these files to be built
2816 # in the source-tree (when they are distributed, that is).
2817 # * Keeping a fresher copy of distributed files in the
2818 # build tree can be annoying during development because
2819 # - if the files is kept under CVS, you really want it
2820 # to be updated in the source tree
2821 # - it os confusing that `make distclean' does not erase
2822 # all files in the build tree.
2823 #
2824 # Consequently, starting with Automake 1.8, .info files are
2825 # built in the source tree again. Because we still plan to
2826 # support non-distributed .info files at some point, we
2827 # have a single variable ($INSRC) that controls whether
2828 # the current .info file must be built in the source tree
2829 # or in the build tree. Actually this variable is switched
2830 # off for .info files that appear to be cleaned; this is
2831 # for backward compatibility with package such as Texinfo,
2832 # which do things like
2833 # info_TEXINFOS = texinfo.txi info-stnd.texi info.texi
2834 # DISTCLEANFILES = texinfo texinfo-* info*.info*
2835 # # Do not create info files for distribution.
2836 # dist-info:
2837 # in order not to distribute .info files.
2838 my $insrc = ($out_file =~ $user_cleaned_files) ? 0 : 1;
2840 my $soutdir = '$(srcdir)/' . $outdir;
2841 $outdir = $soutdir if $insrc;
2843 # If user specified file_TEXINFOS, then use that as explicit
2844 # dependency list.
2845 @texi_deps = ();
2846 push (@texi_deps, "$soutdir$vtexi") if $vtexi;
2848 my $canonical = canonicalize ($infobase);
2849 if (var ($canonical . "_TEXINFOS"))
2850 {
2851 push (@texi_deps, '$(' . $canonical . '_TEXINFOS)');
2852 push_dist_common ('$(' . $canonical . '_TEXINFOS)');
2853 }
2855 my ($dirstamp, @cfiles) =
2856 output_texinfo_build_rules ($texi, $out_file, $insrc, @texi_deps);
2857 push (@texi_cleans, @cfiles);
2859 push (@info_deps_list, $out_file);
2861 # If a vers*.texi file is needed, emit the rule.
2862 if ($vtexi)
2863 {
2864 err_am ("`$vtexi', included in `$texi', "
2865 . "also included in `$versions{$vtexi}'")
2866 if defined $versions{$vtexi};
2867 $versions{$vtexi} = $texi;
2869 # We number the stamp-vti files. This is doable since the
2870 # actual names don't matter much. We only number starting
2871 # with the second one, so that the common case looks nice.
2872 my $vti = ($done ? $done : 'vti');
2873 ++$done;
2875 # This is ugly, but it is our historical practice.
2876 if ($config_aux_dir_set_in_configure_in)
2877 {
2878 require_conf_file_with_macro (TRUE, 'info_TEXINFOS', FOREIGN,
2879 'mdate-sh');
2880 }
2881 else
2882 {
2883 require_file_with_macro (TRUE, 'info_TEXINFOS',
2884 FOREIGN, 'mdate-sh');
2885 }
2887 my $conf_dir;
2888 if ($config_aux_dir_set_in_configure_in)
2889 {
2890 $conf_dir = $config_aux_dir;
2891 $conf_dir .= '/' unless $conf_dir =~ /\/$/;
2892 }
2893 else
2894 {
2895 $conf_dir = '$(srcdir)/';
2896 }
2897 $output_rules .= file_contents ('texi-vers',
2898 new Automake::Location,
2899 TEXI => $texi,
2900 VTI => $vti,
2901 STAMPVTI => "${soutdir}stamp-$vti",
2902 VTEXI => "$soutdir$vtexi",
2903 MDDIR => $conf_dir,
2904 DIRSTAMP => $dirstamp);
2905 }
2906 }
2908 # Handle location of texinfo.tex.
2909 my $need_texi_file = 0;
2910 my $texinfodir;
2911 if (var ('TEXINFO_TEX'))
2912 {
2913 # The user defined TEXINFO_TEX so assume he knows what he is
2914 # doing.
2915 $texinfodir = ('$(srcdir)/'
2916 . dirname (variable_value ('TEXINFO_TEX')));
2917 }
2918 elsif (option 'cygnus')
2919 {
2920 $texinfodir = '$(top_srcdir)/../texinfo';
2921 define_variable ('TEXINFO_TEX', "$texinfodir/texinfo.tex", INTERNAL);
2922 }
2923 elsif ($config_aux_dir_set_in_configure_in)
2924 {
2925 $texinfodir = $config_aux_dir;
2926 define_variable ('TEXINFO_TEX', "$texinfodir/texinfo.tex", INTERNAL);
2927 $need_texi_file = 2; # so that we require_conf_file later
2928 }
2929 else
2930 {
2931 $texinfodir = '$(srcdir)';
2932 $need_texi_file = 1;
2933 }
2934 define_variable ('am__TEXINFO_TEX_DIR', $texinfodir, INTERNAL);
2936 push (@dist_targets, 'dist-info');
2938 if (! option 'no-installinfo')
2939 {
2940 # Make sure documentation is made and installed first. Use
2941 # $(INFO_DEPS), not 'info', because otherwise recursive makes
2942 # get run twice during "make all".
2943 unshift (@all, '$(INFO_DEPS)');
2944 }
2946 define_files_variable ("DVIS", @infobase, 'dvi', INTERNAL);
2947 define_files_variable ("PDFS", @infobase, 'pdf', INTERNAL);
2948 define_files_variable ("PSS", @infobase, 'ps', INTERNAL);
2949 define_files_variable ("HTMLS", @infobase, 'html', INTERNAL);
2951 # This next isn't strictly needed now -- the places that look here
2952 # could easily be changed to look in info_TEXINFOS. But this is
2953 # probably better, in case noinst_TEXINFOS is ever supported.
2954 define_variable ("TEXINFOS", variable_value ('info_TEXINFOS'), INTERNAL);
2956 # Do some error checking. Note that this file is not required
2957 # when in Cygnus mode; instead we defined TEXINFO_TEX explicitly
2958 # up above.
2959 if ($need_texi_file && ! option 'no-texinfo.tex')
2960 {
2961 if ($need_texi_file > 1)
2962 {
2963 require_conf_file_with_macro (TRUE, 'info_TEXINFOS', FOREIGN,
2964 'texinfo.tex');
2965 }
2966 else
2967 {
2968 require_file_with_macro (TRUE, 'info_TEXINFOS', FOREIGN,
2969 'texinfo.tex');
2970 }
2971 }
2973 return makefile_wrap ("", "\t ", @texi_cleans);
2974 }
2977 # handle_texinfo ()
2978 # -----------------
2979 # Handle all Texinfo source.
2980 sub handle_texinfo ()
2981 {
2982 reject_var 'TEXINFOS', "`TEXINFOS' is an anachronism; use `info_TEXINFOS'";
2983 # FIXME: I think this is an obsolete future feature name.
2984 reject_var 'html_TEXINFOS', "HTML generation not yet supported";
2986 my $info_texinfos = var ('info_TEXINFOS');
2987 my $texiclean = "";
2988 if ($info_texinfos)
2989 {
2990 $texiclean = handle_texinfo_helper ($info_texinfos);
2991 }
2992 $output_rules .= file_contents ('texinfos',
2993 new Automake::Location,
2994 TEXICLEAN => $texiclean,
2995 'LOCAL-TEXIS' => !!$info_texinfos);
2996 }
2999 # Handle any man pages.
3000 sub handle_man_pages
3001 {
3002 reject_var 'MANS', "`MANS' is an anachronism; use `man_MANS'";
3004 # Find all the sections in use. We do this by first looking for
3005 # "standard" sections, and then looking for any additional
3006 # sections used in man_MANS.
3007 my (%sections, %vlist);
3008 # We handle nodist_ for uniformity. man pages aren't distributed
3009 # by default so it isn't actually very important.
3010 foreach my $pfx ('', 'dist_', 'nodist_')
3011 {
3012 # Add more sections as needed.
3013 foreach my $section ('0'..'9', 'n', 'l')
3014 {
3015 my $varname = $pfx . 'man' . $section . '_MANS';
3016 if (var ($varname))
3017 {
3018 $sections{$section} = 1;
3019 $varname = '$(' . $varname . ')';
3020 $vlist{$varname} = 1;
3022 &push_dist_common ($varname)
3023 if $pfx eq 'dist_';
3024 }
3025 }
3027 my $varname = $pfx . 'man_MANS';
3028 my $var = var ($varname);
3029 if ($var)
3030 {
3031 foreach ($var->value_as_list_recursive ('all'))
3032 {
3033 # A page like `foo.1c' goes into man1dir.
3034 if (/\.([0-9a-z])([a-z]*)$/)
3035 {
3036 $sections{$1} = 1;
3037 }
3038 }
3040 $varname = '$(' . $varname . ')';
3041 $vlist{$varname} = 1;
3042 &push_dist_common ($varname)
3043 if $pfx eq 'dist_';
3044 }
3045 }
3047 return unless %sections;
3049 # Now for each section, generate an install and uninstall rule.
3050 # Sort sections so output is deterministic.
3051 foreach my $section (sort keys %sections)
3052 {
3053 $output_rules .= &file_contents ('mans',
3054 new Automake::Location,
3055 SECTION => $section);
3056 }
3058 my @mans = sort keys %vlist;
3059 $output_vars .= file_contents ('mans-vars',
3060 new Automake::Location,
3061 MANS => "@mans");
3063 push (@all, '$(MANS)')
3064 unless option 'no-installman';
3065 }
3067 # Handle DATA variables.
3068 sub handle_data
3069 {
3070 &am_install_var ('-noextra', '-candist', 'data', 'DATA',
3071 'data', 'sysconf', 'sharedstate', 'localstate',
3072 'pkgdata', 'lisp', 'noinst', 'check');
3073 }
3075 # Handle TAGS.
3076 sub handle_tags
3077 {
3078 my @tag_deps = ();
3079 my @ctag_deps = ();
3080 if (var ('SUBDIRS'))
3081 {
3082 $output_rules .= ("tags-recursive:\n"
3083 . "\tlist=\'\$(SUBDIRS)\'; for subdir in \$\$list; do \\\n"
3084 # Never fail here if a subdir fails; it
3085 # isn't important.
3086 . "\t test \"\$\$subdir\" = . || (cd \$\$subdir"
3087 . " && \$(MAKE) \$(AM_MAKEFLAGS) tags); \\\n"
3088 . "\tdone\n");
3089 push (@tag_deps, 'tags-recursive');
3090 &depend ('.PHONY', 'tags-recursive');
3092 $output_rules .= ("ctags-recursive:\n"
3093 . "\tlist=\'\$(SUBDIRS)\'; for subdir in \$\$list; do \\\n"
3094 # Never fail here if a subdir fails; it
3095 # isn't important.
3096 . "\t test \"\$\$subdir\" = . || (cd \$\$subdir"
3097 . " && \$(MAKE) \$(AM_MAKEFLAGS) ctags); \\\n"
3098 . "\tdone\n");
3099 push (@ctag_deps, 'ctags-recursive');
3100 &depend ('.PHONY', 'ctags-recursive');
3101 }
3103 if (&saw_sources_p (1)
3104 || var ('ETAGS_ARGS')
3105 || @tag_deps)
3106 {
3107 my @config;
3108 foreach my $spec (@config_headers)
3109 {
3110 my ($out, @ins) = split_config_file_spec ($spec);
3111 foreach my $in (@ins)
3112 {
3113 # If the config header source is in this directory,
3114 # require it.
3115 push @config, basename ($in)
3116 if $relative_dir eq dirname ($in);
3117 }
3118 }
3119 $output_rules .= &file_contents ('tags',
3120 new Automake::Location,
3121 CONFIG => "@config",
3122 TAGSDIRS => "@tag_deps",
3123 CTAGSDIRS => "@ctag_deps");
3125 set_seen 'TAGS_DEPENDENCIES';
3126 }
3127 elsif (reject_var ('TAGS_DEPENDENCIES',
3128 "doesn't make sense to define `TAGS_DEPENDENCIES'"
3129 . "without\nsources or `ETAGS_ARGS'"))
3130 {
3131 }
3132 else
3133 {
3134 # Every Makefile must define some sort of TAGS rule.
3135 # Otherwise, it would be possible for a top-level "make TAGS"
3136 # to fail because some subdirectory failed.
3137 $output_rules .= "tags: TAGS\nTAGS:\n\n";
3138 # Ditto ctags.
3139 $output_rules .= "ctags: CTAGS\nCTAGS:\n\n";
3140 }
3141 }
3143 # Handle multilib support.
3144 sub handle_multilib
3145 {
3146 if ($seen_multilib && $relative_dir eq '.')
3147 {
3148 $output_rules .= &file_contents ('multilib', new Automake::Location);
3149 push (@all, 'all-multi');
3150 }
3151 }
3154 # $BOOLEAN
3155 # &for_dist_common ($A, $B)
3156 # -------------------------
3157 # Subroutine for &handle_dist: sort files to dist.
3158 #
3159 # We put README first because it then becomes easier to make a
3160 # Usenet-compliant shar file (in these, README must be first).
3161 #
3162 # FIXME: do more ordering of files here.
3163 sub for_dist_common
3164 {
3165 return 0
3166 if $a eq $b;
3167 return -1
3168 if $a eq 'README';
3169 return 1
3170 if $b eq 'README';
3171 return $a cmp $b;
3172 }
3175 # handle_dist
3176 # -----------
3177 # Handle 'dist' target.
3178 sub handle_dist ()
3179 {
3180 return if option 'no-dist';
3182 # At least one of the archive formats must be enabled.
3183 if ($relative_dir eq '.')
3184 {
3185 my $archive_defined = option 'no-dist-gzip' ? 0 : 1;
3186 $archive_defined ||=
3187 grep { option "dist-$_" } ('shar', 'zip', 'tarZ', 'bzip2');
3188 error (option 'no-dist-gzip',
3189 "no-dist-gzip specified but no dist-* specified, "
3190 . "at least one archive format must be enabled")
3191 unless $archive_defined;
3192 }
3194 # Look for common files that should be included in distribution.
3195 # If the aux dir is set, and it does not have a Makefile.am, then
3196 # we check for these files there as well.
3197 my $check_aux = 0;
3198 my $auxdir = '';
3199 if ($relative_dir eq '.'
3200 && $config_aux_dir_set_in_configure_in)
3201 {
3202 ($auxdir = $config_aux_dir) =~ s,^\$\(top_srcdir\)/,,;
3203 if (! &is_make_dir ($auxdir))
3204 {
3205 $check_aux = 1;
3206 }
3207 }
3208 foreach my $cfile (@common_files)
3209 {
3210 if (-f ($relative_dir . "/" . $cfile)
3211 # The file might be absent, but if it can be built it's ok.
3212 || rule $cfile)
3213 {
3214 &push_dist_common ($cfile);
3215 }
3217 # Don't use `elsif' here because a file might meaningfully
3218 # appear in both directories.
3219 if ($check_aux && -f ($auxdir . '/' . $cfile))
3220 {
3221 &push_dist_common ($auxdir . '/' . $cfile);
3222 }
3223 }
3225 # We might copy elements from $configure_dist_common to
3226 # %dist_common if we think we need to. If the file appears in our
3227 # directory, we would have discovered it already, so we don't
3228 # check that. But if the file is in a subdir without a Makefile,
3229 # we want to distribute it here if we are doing `.'. Ugly!
3230 if ($relative_dir eq '.')
3231 {
3232 foreach my $file (split (' ' , $configure_dist_common))
3233 {
3234 push_dist_common ($file)
3235 unless is_make_dir (dirname ($file));
3236 }
3237 }
3239 # Files to distributed. Don't use ->value_as_list_recursive
3240 # as it recursively expands `$(dist_pkgdata_DATA)' etc.
3241 my @dist_common = split (' ', rvar ('DIST_COMMON')->variable_value);
3242 @dist_common = uniq (sort for_dist_common (@dist_common));
3243 variable_delete 'DIST_COMMON';
3244 define_pretty_variable ('DIST_COMMON', TRUE, INTERNAL, @dist_common);
3246 # Now that we've processed DIST_COMMON, disallow further attempts
3247 # to set it.
3248 $handle_dist_run = 1;
3250 # Scan EXTRA_DIST to see if we need to distribute anything from a
3251 # subdir. If so, add it to the list. I didn't want to do this
3252 # originally, but there were so many requests that I finally
3253 # relented.
3254 my $extra_dist = var ('EXTRA_DIST');
3255 if ($extra_dist)
3256 {
3257 # FIXME: This should be fixed to work with conditions. That
3258 # will require only making the entries in %dist_dirs under the
3259 # appropriate condition. This is meaningful if the nature of
3260 # the distribution should depend upon the configure options
3261 # used.
3262 foreach ($extra_dist->value_as_list_recursive ('all'))
3263 {
3264 next if /^\@.*\@$/;
3265 next unless s,/+[^/]+$,,;
3266 $dist_dirs{$_} = 1
3267 unless $_ eq '.';
3268 }
3269 }
3271 # We have to check DIST_COMMON for extra directories in case the
3272 # user put a source used in AC_OUTPUT into a subdir.
3273 my $topsrcdir = backname ($relative_dir);
3274 foreach (rvar ('DIST_COMMON')->value_as_list_recursive ('all'))
3275 {
3276 next if /^\@.*\@$/;
3277 s/\$\(top_srcdir\)/$topsrcdir/;
3278 s/\$\(srcdir\)/./;
3279 # Strip any leading `./'.
3280 s,^(:?\./+)*,,;
3281 next unless s,/+[^/]+$,,;
3282 $dist_dirs{$_} = 1
3283 unless $_ eq '.';
3284 }
3286 # Rule to check whether a distribution is viable.
3287 my %transform = ('DISTCHECK-HOOK' => !! rule 'distcheck-hook',
3288 'GETTEXT' => $seen_gettext && !$seen_gettext_external);
3290 # Prepend $(distdir) to each directory given.
3291 my %rewritten = map { '$(distdir)/' . "$_" => 1 } keys %dist_dirs;
3292 $transform{'DISTDIRS'} = join (' ', sort keys %rewritten);
3294 # If we have SUBDIRS, create all dist subdirectories and do
3295 # recursive build.
3296 my $subdirs = var ('SUBDIRS');
3297 if ($subdirs)
3298 {
3299 # If SUBDIRS is conditionally defined, then set DIST_SUBDIRS
3300 # to all possible directories, and use it. If DIST_SUBDIRS is
3301 # defined, just use it.
3302 my $dist_subdir_name;
3303 # Note that we check DIST_SUBDIRS first on purpose, so that
3304 # we don't call has_conditional_contents for now reason.
3305 # (In the past one project used so many conditional subdirectories
3306 # that calling has_conditional_contents on SUBDIRS caused
3307 # automake to grow to 150Mb -- this should not happen with
3308 # the current implementation of has_conditional_contents,
3309 # but it's more efficient to avoid the call anyway.)
3310 if (var ('DIST_SUBDIRS'))
3311 {
3312 $dist_subdir_name = 'DIST_SUBDIRS';
3313 }
3314 elsif ($subdirs->has_conditional_contents)
3315 {
3316 $dist_subdir_name = 'DIST_SUBDIRS';
3317 define_pretty_variable
3318 ('DIST_SUBDIRS', TRUE, INTERNAL,
3319 uniq ($subdirs->value_as_list_recursive ('all')));
3320 }
3321 else
3322 {
3323 $dist_subdir_name = 'SUBDIRS';
3324 # We always define this because that is what `distclean'
3325 # wants.
3326 define_pretty_variable ('DIST_SUBDIRS', TRUE, INTERNAL,
3327 '$(SUBDIRS)');
3328 }
3330 $transform{'DIST_SUBDIR_NAME'} = $dist_subdir_name;
3331 }
3333 # If the target `dist-hook' exists, make sure it is run. This
3334 # allows users to do random weird things to the distribution
3335 # before it is packaged up.
3336 push (@dist_targets, 'dist-hook')
3337 if rule 'dist-hook';
3338 $transform{'DIST-TARGETS'} = join(' ', @dist_targets);
3340 $output_rules .= &file_contents ('distdir',
3341 new Automake::Location,
3342 %transform);
3343 }
3346 # &handle_subdirs ()
3347 # ------------------
3348 # Handle subdirectories.
3349 sub handle_subdirs ()
3350 {
3351 my $subdirs = var ('SUBDIRS');
3352 return
3353 unless $subdirs;
3355 my @subdirs = $subdirs->value_as_list_recursive ('all');
3356 my @dsubdirs = ();
3357 my $dsubdirs = var ('DIST_SUBDIRS');
3358 @dsubdirs = $dsubdirs->value_as_list_recursive ('all')
3359 if $dsubdirs;
3361 # If an `obj/' directory exists, BSD make will enter it before
3362 # reading `Makefile'. Hence the `Makefile' in the current directory
3363 # will not be read.
3364 #
3365 # % cat Makefile
3366 # all:
3367 # echo Hello
3368 # % cat obj/Makefile
3369 # all:
3370 # echo World
3371 # % make # GNU make
3372 # echo Hello
3373 # Hello
3374 # % pmake # BSD make
3375 # echo World
3376 # World
3377 msg_var ('portability', 'SUBDIRS',
3378 "naming a subdirectory `obj' causes troubles with BSD make")
3379 if grep ($_ eq 'obj', @subdirs);
3380 msg_var ('portability', 'DIST_SUBDIRS',
3381 "naming a subdirectory `obj' causes troubles with BSD make")
3382 if grep ($_ eq 'obj', @dsubdirs);
3384 # Make sure each directory mentioned in SUBDIRS actually exists.
3385 foreach my $dir (@subdirs)
3386 {
3387 # Skip directories substituted by configure.
3388 next if $dir =~ /^\@.*\@$/;
3390 if (! -d $relative_dir . '/' . $dir)
3391 {
3392 err_var ('SUBDIRS', "required directory $relative_dir/$dir "
3393 . "does not exist");
3394 next;
3395 }
3397 err_var 'SUBDIRS', "directory should not contain `/'"
3398 if $dir =~ /\//;
3399 }
3401 $output_rules .= &file_contents ('subdirs', new Automake::Location);
3402 rvar ('RECURSIVE_TARGETS')->rdef (TRUE)->{'pretty'} = VAR_SORTED; # Gross!
3403 }
3406 # ($REGEN, @DEPENDENCIES)
3407 # &scan_aclocal_m4
3408 # ----------------
3409 # If aclocal.m4 creation is automated, return the list of its dependencies.
3410 sub scan_aclocal_m4 ()
3411 {
3412 my $regen_aclocal = 0;
3414 set_seen 'CONFIG_STATUS_DEPENDENCIES';
3415 set_seen 'CONFIGURE_DEPENDENCIES';
3417 if (-f 'aclocal.m4')
3418 {
3419 &define_variable ("ACLOCAL_M4", '$(top_srcdir)/aclocal.m4', INTERNAL);
3421 my $aclocal = new Automake::XFile "< aclocal.m4";
3422 my $line = $aclocal->getline;
3423 $regen_aclocal = $line =~ 'generated automatically by aclocal';
3424 }
3426 my @ac_deps = ();
3428 if (set_seen ('ACLOCAL_M4_SOURCES'))
3429 {
3430 push (@ac_deps, '$(ACLOCAL_M4_SOURCES)');
3431 msg_var ('obsolete', 'ACLOCAL_M4_SOURCES',
3432 "`ACLOCAL_M4_SOURCES' is obsolete.\n"
3433 . "It should be safe to simply remove it.");
3434 }
3436 # Note that it might be possible that aclocal.m4 doesn't exist but
3437 # should be auto-generated. This case probably isn't very
3438 # important.
3440 return ($regen_aclocal, @ac_deps);
3441 }
3444 # @DEPENDENCIES
3445 # &prepend_srcdir (@INPUTS)
3446 # -------------------------
3447 # Prepend $(srcdir) or $(top_srcdir) to all @INPUTS. The idea is that
3448 # if an input file has a directory part the same as the current
3449 # directory, then the directory part is simply replaced by $(srcdir).
3450 # But if the directory part is different, then $(top_srcdir) is
3451 # prepended.
3452 sub prepend_srcdir (@)
3453 {
3454 my (@inputs) = @_;
3455 my @newinputs;
3457 foreach my $single (@inputs)
3458 {
3459 if (dirname ($single) eq $relative_dir)
3460 {
3461 push (@newinputs, '$(srcdir)/' . basename ($single));
3462 }
3463 else
3464 {
3465 push (@newinputs, '$(top_srcdir)/' . $single);
3466 }
3467 }
3468 return @newinputs;
3469 }
3471 # @DEPENDENCIES
3472 # rewrite_inputs_into_dependencies ($OUTPUT, @INPUTS)
3473 # ---------------------------------------------------
3474 # Compute a list of dependencies appropriate for the rebuild
3475 # rule of
3476 # AC_CONFIG_FILES($OUTPUT:$INPUT[0]:$INPUTS[1]:...)
3477 # Also distribute $INPUTs which are not build by another AC_CONFIG_FILES.
3478 sub rewrite_inputs_into_dependencies ($@)
3479 {
3480 my ($file, @inputs) = @_;
3481 my @res = ();
3483 for my $i (@inputs)
3484 {
3485 if (exists $ac_config_files_location{$i})
3486 {
3487 if (dirname ($i) eq $relative_dir)
3488 {
3489 $i = basename $i;
3490 }
3491 else
3492 {
3493 $i = '$(top_builddir)/' . $i;
3494 }
3495 }
3496 else
3497 {
3498 msg ('error', $ac_config_files_location{$file},
3499 "required file `$i' not found")
3500 unless exists $output_files{$i} || -f $i;
3501 ($i) = prepend_srcdir ($i);
3502 push_dist_common ($i);
3503 }
3504 push @res, $i;
3505 }
3506 return @res;
3507 }
3511 # &handle_configure ($MAKEFILE_AM, $MAKEFILE_IN, $MAKEFILE, @INPUTS)
3512 # ------------------------------------------------------------------
3513 # Handle remaking and configure stuff.
3514 # We need the name of the input file, to do proper remaking rules.
3515 sub handle_configure ($$$@)
3516 {
3517 my ($makefile_am, $makefile_in, $makefile, @inputs) = @_;
3519 prog_error 'empty @inputs'
3520 unless @inputs;
3522 my ($rel_makefile_am, $rel_makefile_in) = prepend_srcdir ($makefile_am,
3523 $makefile_in);
3524 my $rel_makefile = basename $makefile;
3526 my $colon_infile = ':' . join (':', @inputs);
3527 $colon_infile = '' if $colon_infile eq ":$makefile.in";
3528 my @rewritten = rewrite_inputs_into_dependencies ($makefile, @inputs);
3529 my ($regen_aclocal_m4, @aclocal_m4_deps) = scan_aclocal_m4;
3530 define_pretty_variable ('am__aclocal_m4_deps', TRUE, INTERNAL,
3531 @configure_deps, @aclocal_m4_deps,
3532 '$(top_srcdir)/' . $configure_ac);
3533 my @configuredeps = ('$(am__aclocal_m4_deps)', '$(CONFIGURE_DEPENDENCIES)');
3534 push @configuredeps, '$(ACLOCAL_M4)' if -f 'aclocal.m4';
3535 define_pretty_variable ('am__configure_deps', TRUE, INTERNAL,
3536 @configuredeps);
3538 $output_rules .= file_contents
3539 ('configure',
3540 new Automake::Location,
3541 MAKEFILE => $rel_makefile,
3542 'MAKEFILE-DEPS' => "@rewritten",
3543 'CONFIG-MAKEFILE' => ($relative_dir eq '.') ? '$@' : '$(subdir)/$@',
3544 'MAKEFILE-IN' => $rel_makefile_in,
3545 'MAKEFILE-IN-DEPS' => "@include_stack",
3546 'MAKEFILE-AM' => $rel_makefile_am,
3547 STRICTNESS => global_option 'cygnus'
3548 ? 'cygnus' : $strictness_name,
3549 'USE-DEPS' => global_option 'no-dependencies'
3550 ? ' --ignore-deps' : '',
3551 'MAKEFILE-AM-SOURCES' => "$makefile$colon_infile",
3552 'REGEN-ACLOCAL-M4' => $regen_aclocal_m4);
3554 if ($relative_dir eq '.')
3555 {
3556 &push_dist_common ('acconfig.h')
3557 if -f 'acconfig.h';
3558 }
3560 # If we have a configure header, require it.
3561 my $hdr_index = 0;
3562 my @distclean_config;
3563 foreach my $spec (@config_headers)
3564 {
3565 $hdr_index += 1;
3566 # $CONFIG_H_PATH: config.h from top level.
3567 my ($config_h_path, @ins) = split_config_file_spec ($spec);
3568 my $config_h_dir = dirname ($config_h_path);
3570 # If the header is in the current directory we want to build
3571 # the header here. Otherwise, if we're at the topmost
3572 # directory and the header's directory doesn't have a
3573 # Makefile, then we also want to build the header.
3574 if ($relative_dir eq $config_h_dir
3575 || ($relative_dir eq '.' && ! &is_make_dir ($config_h_dir)))
3576 {
3577 my ($cn_sans_dir, $stamp_dir);
3578 if ($relative_dir eq $config_h_dir)
3579 {
3580 $cn_sans_dir = basename ($config_h_path);
3581 $stamp_dir = '';
3582 }
3583 else
3584 {
3585 $cn_sans_dir = $config_h_path;
3586 if ($config_h_dir eq '.')
3587 {
3588 $stamp_dir = '';
3589 }
3590 else
3591 {
3592 $stamp_dir = $config_h_dir . '/';
3593 }
3594 }
3596 # Distribute all inputs.
3597 for my $in (@ins)
3598 {
3599 error $config_header_location, "required file `$in' not found"
3600 unless -f $in;
3601 push_dist_common (prepend_srcdir ($in));
3602 }
3603 @ins = prepend_srcdir (@ins);
3605 # Header defined and in this directory.
3606 my @files;
3607 if (-f $config_h_path . '.top')
3608 {
3609 push (@files, "$cn_sans_dir.top");
3610 }
3611 if (-f $config_h_path . '.bot')
3612 {
3613 push (@files, "$cn_sans_dir.bot");
3614 }
3616 push_dist_common (@files);
3618 # For now, acconfig.h can only appear in the top srcdir.
3619 if (-f 'acconfig.h')
3620 {
3621 push (@files, '$(top_srcdir)/acconfig.h');
3622 }
3624 my $stamp = "${stamp_dir}stamp-h${hdr_index}";
3625 $output_rules .=
3626 file_contents ('remake-hdr',
3627 new Automake::Location,
3628 FILES => "@files",
3629 CONFIG_H => $cn_sans_dir,
3630 CONFIG_HIN => $ins[0],
3631 CONFIG_H_DEPS => "@ins",
3632 CONFIG_H_PATH => $config_h_path,
3633 FIRST_CONFIG_HIN => ($hdr_index == 1),
3634 STAMP => "$stamp");
3636 push @distclean_config, $cn_sans_dir, $stamp;
3637 }
3638 }
3640 $output_rules .= file_contents ('clean-hdr',
3641 new Automake::Location,
3642 FILES => "@distclean_config")
3643 if @distclean_config;
3645 # Distribute and define mkinstalldirs only if it is already present
3646 # in the package, for backward compatibility (some people my still
3647 # use $(mkinstalldirs)).
3648 my $mkidpath = $config_aux_path[0] . '/mkinstalldirs';
3649 if (-f $mkidpath)
3650 {
3651 # Use require_file so that any existingscript gets updated
3652 # by --force-missing.
3653 require_conf_file ($mkidpath, FOREIGN, 'mkinstalldirs');
3654 define_variable ('mkinstalldirs',
3655 "\$(SHELL) $config_aux_dir/mkinstalldirs", INTERNAL);
3656 }
3657 else
3658 {
3659 define_variable ('mkinstalldirs', '$(mkdir_p)', INTERNAL);
3660 }
3662 reject_var ('CONFIG_HEADER',
3663 "`CONFIG_HEADER' is an anachronism; now determined "
3664 . "automatically\nfrom `$configure_ac'");
3666 my @config_h;
3667 foreach my $spec (@config_headers)
3668 {
3669 my ($out, @ins) = split_config_file_spec ($spec);
3670 # Generate CONFIG_HEADER define.
3671 if ($relative_dir eq dirname ($out))
3672 {
3673 push @config_h, basename ($out);
3674 }
3675 else
3676 {
3677 push @config_h, "\$(top_builddir)/$out";
3678 }
3679 }
3680 define_variable ("CONFIG_HEADER", "@config_h", INTERNAL)
3681 if @config_h;
3683 # Now look for other files in this directory which must be remade
3684 # by config.status, and generate rules for them.
3685 my @actual_other_files = ();
3686 foreach my $lfile (@other_input_files)
3687 {
3688 my $file;
3689 my @inputs;
3690 if ($lfile =~ /^([^:]*):(.*)$/)
3691 {
3692 # This is the ":" syntax of AC_OUTPUT.
3693 $file = $1;
3694 @inputs = split (':', $2);
3695 }
3696 else
3697 {
3698 # Normal usage.
3699 $file = $lfile;
3700 @inputs = $file . '.in';
3701 }
3703 # Automake files should not be stored in here, but in %MAKE_LIST.
3704 prog_error ("$lfile in \@other_input_files\n"
3705 . "\@other_input_files = (@other_input_files)")
3706 if -f $file . '.am';
3708 my $local = basename ($file);
3710 # Make sure the dist directory for each input file is created.
3711 # We only have to do this at the topmost level though. This
3712 # is a bit ugly but it easier than spreading out the logic,
3713 # especially in cases like AC_OUTPUT(foo/out:bar/in), where
3714 # there is no Makefile in bar/.
3715 if ($relative_dir eq '.')
3716 {
3717 foreach (@inputs)
3718 {
3719 $dist_dirs{dirname ($_)} = 1;
3720 }
3721 }
3723 # We skip files that aren't in this directory. However, if
3724 # the file's directory does not have a Makefile, and we are
3725 # currently doing `.', then we create a rule to rebuild the
3726 # file in the subdir.
3727 my $fd = dirname ($file);
3728 if ($fd ne $relative_dir)
3729 {
3730 if ($relative_dir eq '.' && ! &is_make_dir ($fd))
3731 {
3732 $local = $file;
3733 }
3734 else
3735 {
3736 next;
3737 }
3738 }
3740 my @rewritten_inputs = rewrite_inputs_into_dependencies ($file, @inputs);
3742 $output_rules .= ($local . ': '
3743 . '$(top_builddir)/config.status '
3744 . "@rewritten_inputs\n"
3745 . "\t"
3746 . 'cd $(top_builddir) && '
3747 . '$(SHELL) ./config.status '
3748 . ($relative_dir eq '.' ? '' : '$(subdir)/')
3749 . '$@'
3750 . "\n");
3751 push (@actual_other_files, $local);
3752 }
3754 foreach my $struct (@config_links)
3755 {
3756 my ($spec, $where) = @$struct;
3757 my ($link, $file) = split /:/, $spec;
3759 # We skip links that aren't in this directory. However, if
3760 # the link's directory does not have a Makefile, and we are
3761 # currently doing `.', then we add the link to CONFIG_CLEAN_FILES
3762 # in `.'s Makefile.in.
3763 my $local = basename ($link);
3764 my $fd = dirname ($link);
3765 if ($fd ne $relative_dir)
3766 {
3767 if ($relative_dir eq '.' && ! &is_make_dir ($fd))
3768 {
3769 $local = $link;
3770 }
3771 else
3772 {
3773 $local = undef;
3774 }
3775 }
3777 push @actual_other_files, $local if $local;
3779 $local = basename ($file);
3780 $fd = dirname ($file);
3782 # Make sure the dist directory for each input file is created.
3783 # We only have to do this at the topmost level though.
3784 if ($relative_dir eq '.')
3785 {
3786 $dist_dirs{$fd} = 1;
3787 }
3789 # We skip files that aren't in this directory. However, if
3790 # the files's directory does not have a Makefile, and we are
3791 # currently doing `.', then we require the file from `.'.
3792 if ($fd ne $relative_dir)
3793 {
3794 if ($relative_dir eq '.' && ! &is_make_dir ($fd))
3795 {
3796 $local = $file;
3797 }
3798 else
3799 {
3800 next;
3801 }
3802 }
3804 # Require all input files.
3805 require_file ($where, FOREIGN, $local);
3806 }
3808 # These files get removed by "make distclean".
3809 define_pretty_variable ('CONFIG_CLEAN_FILES', TRUE, INTERNAL,
3810 @actual_other_files);
3811 }
3813 # Handle C headers.
3814 sub handle_headers
3815 {
3816 my @r = &am_install_var ('-defaultdist', 'header', 'HEADERS', 'include',
3817 'oldinclude', 'pkginclude',
3818 'noinst', 'check');
3819 foreach (@r)
3820 {
3821 next unless $_->[1] =~ /\..*$/;
3822 &saw_extension ($&);
3823 }
3824 }
3826 sub handle_gettext
3827 {
3828 return if ! $seen_gettext || $relative_dir ne '.';
3830 my $subdirs = var 'SUBDIRS';
3832 if (! $subdirs)
3833 {
3834 err_ac "AM_GNU_GETTEXT used but SUBDIRS not defined";
3835 return;
3836 }
3838 # Perform some sanity checks to help users get the right setup.
3839 # We disable these tests when po/ doesn't exist in order not to disallow
3840 # unusual gettext setups.
3841 #
3842 # Bruno Haible:
3843 # | The idea is:
3844 # |
3845 # | 1) If a package doesn't have a directory po/ at top level, it
3846 # | will likely have multiple po/ directories in subpackages.
3847 # |
3848 # | 2) It is useful to warn for the absence of intl/ if AM_GNU_GETTEXT
3849 # | is used without 'external'. It is also useful to warn for the
3850 # | presence of intl/ if AM_GNU_GETTEXT([external]) is used. Both
3851 # | warnings apply only to the usual layout of packages, therefore
3852 # | they should both be disabled if no po/ directory is found at
3853 # | top level.
3855 if (-d 'po')
3856 {
3857 my @subdirs = $subdirs->value_as_list_recursive ('all');
3859 msg_var ('syntax', $subdirs,
3860 "AM_GNU_GETTEXT used but `po' not in SUBDIRS")
3861 if ! grep ($_ eq 'po', @subdirs);
3863 # intl/ is not required when AM_GNU_GETTEXT is called with
3864 # the `external' option.
3865 msg_var ('syntax', $subdirs,
3866 "AM_GNU_GETTEXT used but `intl' not in SUBDIRS")
3867 if (! $seen_gettext_external
3868 && ! grep ($_ eq 'intl', @subdirs));
3870 # intl/ should not be used with AM_GNU_GETTEXT([external])
3871 msg_var ('syntax', $subdirs,
3872 "`intl' should not be in SUBDIRS when "
3873 . "AM_GNU_GETTEXT([external]) is used")
3874 if ($seen_gettext_external && grep ($_ eq 'intl', @subdirs));
3875 }
3877 require_file ($ac_gettext_location, GNU, 'ABOUT-NLS');
3878 }
3880 # Handle footer elements.
3881 sub handle_footer
3882 {
3883 # NOTE don't use define_pretty_variable here, because
3884 # $contents{...} is already defined.
3885 $output_vars .= 'SOURCES = ' . variable_value ('SOURCES') . "\n\n"
3886 if variable_value ('SOURCES');
3888 reject_rule ('.SUFFIXES',
3889 "use variable `SUFFIXES', not target `.SUFFIXES'");
3891 # Note: AIX 4.1 /bin/make will fail if any suffix rule appears
3892 # before .SUFFIXES. So we make sure that .SUFFIXES appears before
3893 # anything else, by sticking it right after the default: target.
3894 $output_header .= ".SUFFIXES:\n";
3895 my $suffixes = var 'SUFFIXES';
3896 my @suffixes = Automake::Rule::suffixes;
3897 if (@suffixes || $suffixes)
3898 {
3899 # Make sure SUFFIXES has unique elements. Sort them to ensure
3900 # the output remains consistent. However, $(SUFFIXES) is
3901 # always at the start of the list, unsorted. This is done
3902 # because make will choose rules depending on the ordering of
3903 # suffixes, and this lets the user have some control. Push
3904 # actual suffixes, and not $(SUFFIXES). Some versions of make
3905 # do not like variable substitutions on the .SUFFIXES line.
3906 my @user_suffixes = ($suffixes
3907 ? $suffixes->value_as_list_recursive ('all')
3908 : ());
3910 my %suffixes = map { $_ => 1 } @suffixes;
3911 delete @suffixes{@user_suffixes};
3913 $output_header .= (".SUFFIXES: "
3914 . join (' ', @user_suffixes, sort keys %suffixes)
3915 . "\n");
3916 }
3918 $output_trailer .= file_contents ('footer', new Automake::Location);
3919 }
3922 # Generate `make install' rules.
3923 sub handle_install ()
3924 {
3925 $output_rules .= &file_contents
3926 ('install',
3927 new Automake::Location,
3928 maybe_BUILT_SOURCES => (set_seen ('BUILT_SOURCES')
3929 ? (" \$(BUILT_SOURCES)\n"
3930 . "\t\$(MAKE) \$(AM_MAKEFLAGS)")
3931 : ''),
3932 'installdirs-local' => (rule 'installdirs-local'
3933 ? ' installdirs-local' : ''),
3934 am__installdirs => variable_value ('am__installdirs') || '');
3935 }
3938 # Deal with all and all-am.
3939 sub handle_all ($)
3940 {
3941 my ($makefile) = @_;
3943 # Output `all-am'.
3945 # Put this at the beginning for the sake of non-GNU makes. This
3946 # is still wrong if these makes can run parallel jobs. But it is
3947 # right enough.
3948 unshift (@all, basename ($makefile));
3950 foreach my $spec (@config_headers)
3951 {
3952 my ($out, @ins) = split_config_file_spec ($spec);
3953 push (@all, basename ($out))
3954 if dirname ($out) eq $relative_dir;
3955 }
3957 # Install `all' hooks.
3958 if (rule "all-local")
3959 {
3960 push (@all, "all-local");
3961 &depend ('.PHONY', "all-local");
3962 }
3964 &pretty_print_rule ("all-am:", "\t\t", @all);
3965 &depend ('.PHONY', 'all-am', 'all');
3968 # Output `all'.
3970 my @local_headers = ();
3971 push @local_headers, '$(BUILT_SOURCES)'
3972 if var ('BUILT_SOURCES');
3973 foreach my $spec (@config_headers)
3974 {
3975 my ($out, @ins) = split_config_file_spec ($spec);
3976 push @local_headers, basename ($out)
3977 if dirname ($out) eq $relative_dir;
3978 }
3980 if (@local_headers)
3981 {
3982 # We need to make sure config.h is built before we recurse.
3983 # We also want to make sure that built sources are built
3984 # before any ordinary `all' targets are run. We can't do this
3985 # by changing the order of dependencies to the "all" because
3986 # that breaks when using parallel makes. Instead we handle
3987 # things explicitly.
3988 $output_all .= ("all: @local_headers"
3989 . "\n\t"
3990 . '$(MAKE) $(AM_MAKEFLAGS) '
3991 . (var ('SUBDIRS') ? 'all-recursive' : 'all-am')
3992 . "\n\n");
3993 }
3994 else
3995 {
3996 $output_all .= "all: " . (var ('SUBDIRS')
3997 ? 'all-recursive' : 'all-am') . "\n\n";
3998 }
3999 }
4002 # &do_check_merge_target ()
4003 # -------------------------
4004 # Handle check merge target specially.
4005 sub do_check_merge_target ()
4006 {
4007 if (rule 'check-local')
4008 {
4009 # User defined local form of target. So include it.
4010 push @check_tests, 'check-local';
4011 depend '.PHONY', 'check-local';
4012 }
4014 # In --cygnus mode, check doesn't depend on all.
4015 if (option 'cygnus')
4016 {
4017 # Just run the local check rules.
4018 pretty_print_rule ('check-am:', "\t\t", @check);
4019 }
4020 else
4021 {
4022 # The check target must depend on the local equivalent of
4023 # `all', to ensure all the primary targets are built. Then it
4024 # must build the local check rules.
4025 $output_rules .= "check-am: all-am\n";
4026 pretty_print_rule ("\t\$(MAKE) \$(AM_MAKEFLAGS)", "\t ",
4027 @check)
4028 if @check;
4029 }
4030 pretty_print_rule ("\t\$(MAKE) \$(AM_MAKEFLAGS)", "\t ",
4031 @check_tests)
4032 if @check_tests;
4034 depend '.PHONY', 'check', 'check-am';
4035 # Handle recursion. We have to honor BUILT_SOURCES like for `all:'.
4036 $output_rules .= ("check: "
4037 . (var ('BUILT_SOURCES')
4038 ? "\$(BUILT_SOURCES)\n\t\$(MAKE) \$(AM_MAKEFLAGS) "
4039 : '')
4040 . (var ('SUBDIRS') ? 'check-recursive' : 'check-am')
4041 . "\n");
4042 }
4044 # handle_clean ($MAKEFILE)
4045 # ------------------------
4046 # Handle all 'clean' targets.
4047 sub handle_clean ($)
4048 {
4049 my ($makefile) = @_;
4051 # Clean the files listed in user variables if they exist.
4052 $clean_files{'$(MOSTLYCLEANFILES)'} = MOSTLY_CLEAN
4053 if var ('MOSTLYCLEANFILES');
4054 $clean_files{'$(CLEANFILES)'} = CLEAN
4055 if var ('CLEANFILES');
4056 $clean_files{'$(DISTCLEANFILES)'} = DIST_CLEAN
4057 if var ('DISTCLEANFILES');
4058 $clean_files{'$(MAINTAINERCLEANFILES)'} = MAINTAINER_CLEAN
4059 if var ('MAINTAINERCLEANFILES');
4061 # Built sources are automatically removed by maintainer-clean.
4062 $clean_files{'$(BUILT_SOURCES)'} = MAINTAINER_CLEAN
4063 if var ('BUILT_SOURCES');
4065 # Compute a list of "rm"s to run for each target.
4066 my %rms = (MOSTLY_CLEAN, [],
4067 CLEAN, [],
4068 DIST_CLEAN, [],
4069 MAINTAINER_CLEAN, []);
4071 foreach my $file (keys %clean_files)
4072 {
4073 my $when = $clean_files{$file};
4074 prog_error 'invalid entry in %clean_files'
4075 unless exists $rms{$when};
4077 my $rm = "rm -f $file";
4078 # If file is a variable, make sure when don't call `rm -f' without args.
4079 $rm ="test -z \"$file\" || $rm"
4080 if ($file =~ /^\s*\$(\(.*\)|\{.*\})\s*$/);
4082 push @{$rms{$when}}, "\t-$rm\n";
4083 }
4085 $output_rules .= &file_contents
4086 ('clean',
4087 new Automake::Location,
4088 MOSTLYCLEAN_RMS => join ('', @{$rms{&MOSTLY_CLEAN}}),
4089 CLEAN_RMS => join ('', @{$rms{&CLEAN}}),
4090 DISTCLEAN_RMS => join ('', @{$rms{&DIST_CLEAN}}),
4091 MAINTAINER_CLEAN_RMS => join ('', @{$rms{&MAINTAINER_CLEAN}}),
4092 MAKEFILE => basename $makefile,
4093 );
4094 }
4097 # &target_cmp ($A, $B)
4098 # --------------------
4099 # Subroutine for &handle_factored_dependencies to let `.PHONY' be last.
4100 sub target_cmp
4101 {
4102 return 0
4103 if $a eq $b;
4104 return -1
4105 if $b eq '.PHONY';
4106 return 1
4107 if $a eq '.PHONY';
4108 return $a cmp $b;
4109 }
4112 # &handle_factored_dependencies ()
4113 # --------------------------------
4114 # Handle everything related to gathered targets.
4115 sub handle_factored_dependencies
4116 {
4117 # Reject bad hooks.
4118 foreach my $utarg ('uninstall-data-local', 'uninstall-data-hook',
4119 'uninstall-exec-local', 'uninstall-exec-hook')
4120 {
4121 my $x = $utarg;
4122 $x =~ s/(data|exec)-//;
4123 reject_rule ($utarg, "use `$x', not `$utarg'");
4124 }
4126 reject_rule ('install-local',
4127 "use `install-data-local' or `install-exec-local', "
4128 . "not `install-local'");
4130 reject_rule ('install-info-local',
4131 "`install-info-local' target defined but "
4132 . "`no-installinfo' option not in use")
4133 unless option 'no-installinfo';
4135 # Install the -local hooks.
4136 foreach (keys %dependencies)
4137 {
4138 # Hooks are installed on the -am targets.
4139 s/-am$// or next;
4140 if (rule "$_-local")
4141 {
4142 depend ("$_-am", "$_-local");
4143 depend ('.PHONY', "$_-local");
4144 }
4145 }
4147 # Install the -hook hooks.
4148 # FIXME: Why not be as liberal as we are with -local hooks?
4149 foreach ('install-exec', 'install-data', 'uninstall')
4150 {
4151 if (rule ("$_-hook"))
4152 {
4153 $actions{"$_-am"} .=
4154 ("\t\@\$(NORMAL_INSTALL)\n"
4155 . "\t" . '$(MAKE) $(AM_MAKEFLAGS) ' . "$_-hook\n");
4156 }
4157 }
4159 # All the required targets are phony.
4160 depend ('.PHONY', keys %required_targets);
4162 # Actually output gathered targets.
4163 foreach (sort target_cmp keys %dependencies)
4164 {
4165 # If there is nothing about this guy, skip it.
4166 next
4167 unless (@{$dependencies{$_}}
4168 || $actions{$_}
4169 || $required_targets{$_});
4171 # Define gathered targets in undefined conditions.
4172 # FIXME: Right now we must handle .PHONY as an exception,
4173 # because people write things like
4174 # .PHONY: myphonytarget
4175 # to append dependencies. This would not work if Automake
4176 # refrained from defining its own .PHONY target as it does
4177 # with other overridden targets.
4178 my @undefined_conds = (TRUE,);
4179 if ($_ ne '.PHONY')
4180 {
4181 @undefined_conds =
4182 Automake::Rule::define ($_, 'internal',
4183 RULE_AUTOMAKE, TRUE, INTERNAL);
4184 }
4185 my @uniq_deps = uniq (sort @{$dependencies{$_}});
4186 foreach my $cond (@undefined_conds)
4187 {
4188 my $condstr = $cond->subst_string;
4189 &pretty_print_rule ("$condstr$_:", "$condstr\t", @uniq_deps);
4190 $output_rules .= $actions{$_} if defined $actions{$_};
4191 $output_rules .= "\n";
4192 }
4193 }
4194 }
4197 # &handle_tests_dejagnu ()
4198 # ------------------------
4199 sub handle_tests_dejagnu
4200 {
4201 push (@check_tests, 'check-DEJAGNU');
4202 $output_rules .= file_contents ('dejagnu', new Automake::Location);
4203 }
4206 # Handle TESTS variable and other checks.
4207 sub handle_tests
4208 {
4209 if (option 'dejagnu')
4210 {
4211 &handle_tests_dejagnu;
4212 }
4213 else
4214 {
4215 foreach my $c ('DEJATOOL', 'RUNTEST', 'RUNTESTFLAGS')
4216 {
4217 reject_var ($c, "`$c' defined but `dejagnu' not in "
4218 . "`AUTOMAKE_OPTIONS'");
4219 }
4220 }
4222 if (var ('TESTS'))
4223 {
4224 push (@check_tests, 'check-TESTS');
4225 $output_rules .= &file_contents ('check', new Automake::Location);
4226 }
4227 }
4229 # Handle Emacs Lisp.
4230 sub handle_emacs_lisp
4231 {
4232 my @elfiles = &am_install_var ('-candist', 'lisp', 'LISP',
4233 'lisp', 'noinst');
4235 return if ! @elfiles;
4237 # Generate .elc files.
4238 my @elcfiles = map { $_->[1] . 'c' } @elfiles;
4240 define_pretty_variable ('ELCFILES', TRUE, INTERNAL, @elcfiles);
4241 define_pretty_variable ('am__ELFILES', TRUE, INTERNAL,
4242 map { $_->[1] } @elfiles);
4244 # Do not depend on the build rules if ELCFILES is empty.
4245 # This is necessary because overriding ELCFILES= is a documented
4246 # idiom to disable byte-compilation.
4247 if (variable_value ('ELCFILES'))
4248 {
4249 # It's important that all depends on elc-stamp so that
4250 # all .elc files get recompiled whenever a .el changes.
4251 # It's important that all depends on $(ELCFILES) so that
4252 # we can recover if any of them is deleted.
4253 push (@all, 'elc-stamp', '$(ELCFILES)');
4254 }
4256 require_variables ($elfiles[0][0], "Emacs Lisp sources seen", TRUE,
4257 'EMACS', 'lispdir');
4258 require_conf_file ($elfiles[0][0], FOREIGN, 'elisp-comp');
4259 &define_variable ('elisp_comp', $config_aux_dir . '/elisp-comp', INTERNAL);
4260 }
4262 # Handle Python
4263 sub handle_python
4264 {
4265 my @pyfiles = &am_install_var ('-defaultdist', 'python', 'PYTHON',
4266 'noinst');
4267 return if ! @pyfiles;
4269 require_variables ($pyfiles[0][0], "Python sources seen", TRUE, 'PYTHON');
4270 require_conf_file ($pyfiles[0][0], FOREIGN, 'py-compile');
4271 &define_variable ('py_compile', $config_aux_dir . '/py-compile', INTERNAL);
4272 }
4274 # Handle Java.
4275 sub handle_java
4276 {
4277 my @sourcelist = &am_install_var ('-candist',
4278 'java', 'JAVA',
4279 'java', 'noinst', 'check');
4280 return if ! @sourcelist;
4282 my @prefix = am_primary_prefixes ('JAVA', 1,
4283 'java', 'noinst', 'check');
4285 my $dir;
4286 foreach my $curs (@prefix)
4287 {
4288 next
4289 if $curs eq 'EXTRA';
4291 err_var "${curs}_JAVA", "multiple _JAVA primaries in use"
4292 if defined $dir;
4293 $dir = $curs;
4294 }
4297 push (@all, 'class' . $dir . '.stamp');
4298 }
4301 # Handle some of the minor options.
4302 sub handle_minor_options
4303 {
4304 if (option 'readme-alpha')
4305 {
4306 if ($relative_dir eq '.')
4307 {
4308 if ($package_version !~ /^$GNITS_VERSION_PATTERN$/)
4309 {
4310 msg ('error-gnits', $package_version_location,
4311 "version `$package_version' doesn't follow " .
4312 "Gnits standards");
4313 }
4314 if (defined $1 && -f 'README-alpha')
4315 {
4316 # This means we have an alpha release. See
4317 # GNITS_VERSION_PATTERN for details.
4318 push_dist_common ('README-alpha');
4319 }
4320 }
4321 }
4322 }
4324 ################################################################
4326 # ($OUTPUT, @INPUTS)
4327 # &split_config_file_spec ($SPEC)
4328 # -------------------------------
4329 # Decode the Autoconf syntax for config files (files, headers, links
4330 # etc.).
4331 sub split_config_file_spec ($)
4332 {
4333 my ($spec) = @_;
4334 my ($output, @inputs) = split (/:/, $spec);
4336 push @inputs, "$output.in"
4337 unless @inputs;
4339 return ($output, @inputs);
4340 }
4342 # $input
4343 # locate_am (@POSSIBLE_SOURCES)
4344 # -----------------------------
4345 # AC_CONFIG_FILES allow specifications such as Makefile:top.in:mid.in:bot.in
4346 # This functions returns the first *.in file for which a *.am exists.
4347 # It returns undef otherwise.
4348 sub locate_am (@)
4349 {
4350 my (@rest) = @_;
4351 my $input;
4352 foreach my $file (@rest)
4353 {
4354 if (($file =~ /^(.*)\.in$/) && -f "$1.am")
4355 {
4356 $input = $file;
4357 last;
4358 }
4359 }
4360 return $input;
4361 }
4363 my %make_list;
4365 # &scan_autoconf_config_files ($WHERE, $CONFIG-FILES)
4366 # ---------------------------------------------------
4367 # Study $CONFIG-FILES which is the first argument to AC_CONFIG_FILES
4368 # (or AC_OUTPUT).
4369 sub scan_autoconf_config_files ($$)
4370 {
4371 my ($where, $config_files) = @_;
4373 # Look at potential Makefile.am's.
4374 foreach (split ' ', $config_files)
4375 {
4376 # Must skip empty string for Perl 4.
4377 next if $_ eq "\\" || $_ eq '';
4379 # Handle $local:$input syntax.
4380 my ($local, @rest) = split (/:/);
4381 @rest = ("$local.in",) unless @rest;
4382 my $input = locate_am @rest;
4383 if ($input)
4384 {
4385 # We have a file that automake should generate.
4386 $make_list{$input} = join (':', ($local, @rest));
4387 }
4388 else
4389 {
4390 # We have a file that automake should cause to be
4391 # rebuilt, but shouldn't generate itself.
4392 push (@other_input_files, $_);
4393 }
4394 $ac_config_files_location{$local} = $where;
4395 }
4396 }
4399 # &scan_autoconf_traces ($FILENAME)
4400 # ---------------------------------
4401 sub scan_autoconf_traces ($)
4402 {
4403 my ($filename) = @_;
4405 # Macros to trace, with their minimal number of arguments.
4406 my %traced = (
4407 AC_CANONICAL_HOST => 0,
4408 AC_CANONICAL_SYSTEM => 0,
4409 AC_CONFIG_AUX_DIR => 1,
4410 AC_CONFIG_FILES => 1,
4411 AC_CONFIG_HEADERS => 1,
4412 AC_CONFIG_LINKS => 1,
4413 AC_INIT => 0,
4414 AC_LIBSOURCE => 1,
4415 AC_SUBST => 1,
4416 AM_AUTOMAKE_VERSION => 1,
4417 AM_CONDITIONAL => 2,
4418 AM_ENABLE_MULTILIB => 0,
4419 AM_GNU_GETTEXT => 0,
4420 AM_INIT_AUTOMAKE => 0,
4421 AM_MAINTAINER_MODE => 0,
4422 AM_PROG_CC_C_O => 0,
4423 m4_include => 1,
4424 m4_sinclude => 1,
4425 sinclude => 1,
4426 );
4428 my $traces = ($ENV{AUTOCONF} || 'autoconf') . " ";
4430 # Use a separator unlikely to be used, not `:', the default, which
4431 # has a precise meaning for AC_CONFIG_FILES and so on.
4432 $traces .= join (' ',
4433 map { "--trace=$_" . ':\$f:\$l::\$n::\${::}%' }
4434 (keys %traced));
4436 my $tracefh = new Automake::XFile ("$traces $filename |");
4437 verb "reading $traces";
4439 while ($_ = $tracefh->getline)
4440 {
4441 chomp;
4442 my ($here, @args) = split /::/;
4443 my $where = new Automake::Location $here;
4444 my $macro = $args[0];
4446 prog_error ("unrequested trace `$macro'")
4447 unless exists $traced{$macro};
4449 # Skip and diagnose malformed calls.
4450 if ($#args < $traced{$macro})
4451 {
4452 msg ('syntax', $where, "not enough arguments for $macro");
4453 next;
4454 }
4456 # Alphabetical ordering please.
4457 if ($macro eq 'AC_CANONICAL_HOST')
4458 {
4459 if (! $seen_canonical)
4460 {
4461 $seen_canonical = AC_CANONICAL_HOST;
4462 $canonical_location = $where;
4463 }
4464 }
4465 elsif ($macro eq 'AC_CANONICAL_SYSTEM')
4466 {
4467 $seen_canonical = AC_CANONICAL_SYSTEM;
4468 $canonical_location = $where;
4469 }
4470 elsif ($macro eq 'AC_CONFIG_AUX_DIR')
4471 {
4472 @config_aux_path = $args[1];
4473 $config_aux_dir_set_in_configure_in = 1;
4474 }
4475 elsif ($macro eq 'AC_CONFIG_FILES')
4476 {
4477 # Look at potential Makefile.am's.
4478 scan_autoconf_config_files ($where, $args[1]);
4479 }
4480 elsif ($macro eq 'AC_CONFIG_HEADERS')
4481 {
4482 $config_header_location = $where;
4483 push @config_headers, split (' ', $args[1]);
4484 }
4485 elsif ($macro eq 'AC_CONFIG_LINKS')
4486 {
4487 push @config_links, map { [$_, $where] } split (' ', $args[1]);
4488 }
4489 elsif ($macro eq 'AC_INIT')
4490 {
4491 if (defined $args[2])
4492 {
4493 $package_version = $args[2];
4494 $package_version_location = $where;
4495 }
4496 }
4497 elsif ($macro eq 'AC_LIBSOURCE')
4498 {
4499 $libsources{$args[1]} = $here;
4500 }
4501 elsif ($macro eq 'AC_SUBST')
4502 {
4503 # Just check for alphanumeric in AC_SUBST. If you do
4504 # AC_SUBST(5), then too bad.
4505 $configure_vars{$args[1]} = $where
4506 if $args[1] =~ /^\w+$/;
4507 }
4508 elsif ($macro eq 'AM_AUTOMAKE_VERSION')
4509 {
4510 error ($where,
4511 "version mismatch. This is Automake $VERSION,\n" .
4512 "but the definition used by this AM_INIT_AUTOMAKE\n" .
4513 "comes from Automake $args[1]. You should recreate\n" .
4514 "aclocal.m4 with aclocal and run automake again.\n",
4515 # $? = 63 is used to indicate version mismatch to missing.
4516 exit_code => 63)
4517 if $VERSION ne $args[1];
4519 $seen_automake_version = 1;
4520 }
4521 elsif ($macro eq 'AM_CONDITIONAL')
4522 {
4523 $configure_cond{$args[1]} = $where;
4524 }
4525 elsif ($macro eq 'AM_ENABLE_MULTILIB')
4526 {
4527 $seen_multilib = $where;
4528 }
4529 elsif ($macro eq 'AM_GNU_GETTEXT')
4530 {
4531 $seen_gettext = $where;
4532 $ac_gettext_location = $where;
4533 $seen_gettext_external = grep ($_ eq 'external', @args);
4534 }
4535 elsif ($macro eq 'AM_INIT_AUTOMAKE')
4536 {
4537 $seen_init_automake = $where;
4538 if (defined $args[2])
4539 {
4540 $package_version = $args[2];
4541 $package_version_location = $where;
4542 }
4543 elsif (defined $args[1])
4544 {
4545 exit $exit_code
4546 if (process_global_option_list ($where,
4547 split (' ', $args[1])));
4548 }
4549 }
4550 elsif ($macro eq 'AM_MAINTAINER_MODE')
4551 {
4552 $seen_maint_mode = $where;
4553 }
4554 elsif ($macro eq 'AM_PROG_CC_C_O')
4555 {
4556 $seen_cc_c_o = $where;
4557 }
4558 elsif ($macro eq 'm4_include'
4559 || $macro eq 'm4_sinclude'
4560 || $macro eq 'sinclude')
4561 {
4562 # Some modified versions of Autoconf don't use
4563 # forzen files. Consequently it's possible that we see all
4564 # m4_include's performed during Autoconf's startup.
4565 # Obviously we don't want to distribute Autoconf's files
4566 # so we skip absolute filenames here.
4567 push @configure_deps, '$(top_srcdir)/' . $args[1]
4568 unless $here =~ m,^(?:\w:)?[\\/],;
4569 # Keep track of the greatest timestamp.
4570 if (-e $args[1])
4571 {
4572 my $mtime = mtime $args[1];
4573 $configure_deps_greatest_timestamp = $mtime
4574 if $mtime > $configure_deps_greatest_timestamp;
4575 }
4576 }
4577 }
4579 $tracefh->close;
4580 }
4583 # &scan_autoconf_files ()
4584 # -----------------------
4585 # Check whether we use `configure.ac' or `configure.in'.
4586 # Scan it (and possibly `aclocal.m4') for interesting things.
4587 # We must scan aclocal.m4 because there might be AC_SUBSTs and such there.
4588 sub scan_autoconf_files ()
4589 {
4590 # Reinitialize libsources here. This isn't really necessary,
4591 # since we currently assume there is only one configure.ac. But
4592 # that won't always be the case.
4593 %libsources = ();
4595 # Keep track of the youngest configure dependency.
4596 $configure_deps_greatest_timestamp = mtime $configure_ac;
4597 if (-e 'aclocal.m4')
4598 {
4599 my $mtime = mtime 'aclocal.m4';
4600 $configure_deps_greatest_timestamp = $mtime
4601 if $mtime > $configure_deps_greatest_timestamp;
4602 }
4604 scan_autoconf_traces ($configure_ac);
4606 @configure_input_files = sort keys %make_list;
4607 # Set input and output files if not specified by user.
4608 if (! @input_files)
4609 {
4610 @input_files = @configure_input_files;
4611 %output_files = %make_list;
4612 }
4615 if (! $seen_init_automake)
4616 {
4617 err_ac ("no proper invocation of AM_INIT_AUTOMAKE was found.\nYou "
4618 . "should verify that $configure_ac invokes AM_INIT_AUTOMAKE,"
4619 . "\nthat aclocal.m4 is present in the top-level directory,\n"
4620 . "and that aclocal.m4 was recently regenerated "
4621 . "(using aclocal).");
4622 }
4623 else
4624 {
4625 if (! $seen_automake_version)
4626 {
4627 if (-f 'aclocal.m4')
4628 {
4629 error ($seen_init_automake,
4630 "your implementation of AM_INIT_AUTOMAKE comes from " .
4631 "an\nold Automake version. You should recreate " .
4632 "aclocal.m4\nwith aclocal and run automake again.\n",
4633 # $? = 63 is used to indicate version mismatch to missing.
4634 exit_code => 63);
4635 }
4636 else
4637 {
4638 error ($seen_init_automake,
4639 "no proper implementation of AM_INIT_AUTOMAKE was " .
4640 "found,\nprobably because aclocal.m4 is missing...\n" .
4641 "You should run aclocal to create this file, then\n" .
4642 "run automake again.\n");
4643 }
4644 }
4645 }
4647 # Look for some files we need. Always check for these. This
4648 # check must be done for every run, even those where we are only
4649 # looking at a subdir Makefile. We must set relative_dir so that
4650 # the file-finding machinery works.
4651 # FIXME: Is this broken because it needs dynamic scopes.
4652 # My tests seems to show it's not the case.
4653 $relative_dir = '.';
4654 require_conf_file ($configure_ac, FOREIGN, 'install-sh', 'missing');
4655 err_am "`install.sh' is an anachronism; use `install-sh' instead"
4656 if -f $config_aux_path[0] . '/install.sh';
4658 # Preserve dist_common for later.
4659 $configure_dist_common = variable_value ('DIST_COMMON') || '';
4660 }
4662 ################################################################
4664 # Set up for Cygnus mode.
4665 sub check_cygnus
4666 {
4667 my $cygnus = option 'cygnus';
4668 return unless $cygnus;
4670 set_strictness ('foreign');
4671 set_option ('no-installinfo', $cygnus);
4672 set_option ('no-dependencies', $cygnus);
4673 set_option ('no-dist', $cygnus);
4675 err_ac "`AM_MAINTAINER_MODE' required when --cygnus specified"
4676 if !$seen_maint_mode;
4677 }
4679 # Do any extra checking for GNU standards.
4680 sub check_gnu_standards
4681 {
4682 if ($relative_dir eq '.')
4683 {
4684 # In top level (or only) directory.
4685 require_file ("$am_file.am", GNU,
4686 qw/INSTALL NEWS README AUTHORS ChangeLog/);
4688 # Accept one of these three licenses; default to COPYING.
4689 # Make sure we do not overwrite an existing license.
4690 my $license;
4691 foreach (qw /COPYING COPYING.LIB COPYING.LESSER/)
4692 {
4693 if (-f $_)
4694 {
4695 $license = $_;
4696 last;
4697 }
4698 }
4699 require_file ("$am_file.am", GNU, 'COPYING')
4700 unless $license;
4701 }
4703 for my $opt ('no-installman', 'no-installinfo')
4704 {
4705 msg ('error-gnu', option $opt,
4706 "option `$opt' disallowed by GNU standards")
4707 if option $opt;
4708 }
4709 }
4711 # Do any extra checking for GNITS standards.
4712 sub check_gnits_standards
4713 {
4714 if ($relative_dir eq '.')
4715 {
4716 # In top level (or only) directory.
4717 require_file ("$am_file.am", GNITS, 'THANKS');
4718 }
4719 }
4721 ################################################################
4722 #
4723 # Functions to handle files of each language.
4725 # Each `lang_X_rewrite($DIRECTORY, $BASE, $EXT)' function follows a
4726 # simple formula: Return value is LANG_SUBDIR if the resulting object
4727 # file should be in a subdir if the source file is, LANG_PROCESS if
4728 # file is to be dealt with, LANG_IGNORE otherwise.
4730 # Much of the actual processing is handled in
4731 # handle_single_transform_list. These functions exist so that
4732 # auxiliary information can be recorded for a later cleanup pass.
4733 # Note that the calls to these functions are computed, so don't bother
4734 # searching for their precise names in the source.
4736 # This is just a convenience function that can be used to determine
4737 # when a subdir object should be used.
4738 sub lang_sub_obj
4739 {
4740 return option 'subdir-objects' ? LANG_SUBDIR : LANG_PROCESS;
4741 }
4743 # Rewrite a single C source file.
4744 sub lang_c_rewrite
4745 {
4746 my ($directory, $base, $ext) = @_;
4748 if (option 'ansi2knr' && $base =~ /_$/)
4749 {
4750 # FIXME: include line number in error.
4751 err_am "C source file `$base.c' would be deleted by ansi2knr rules";
4752 }
4754 my $r = LANG_PROCESS;
4755 if (option 'subdir-objects')
4756 {
4757 $r = LANG_SUBDIR;
4758 $base = $directory . '/' . $base
4759 unless $directory eq '.' || $directory eq '';
4761 err_am ("C objects in subdir but `AM_PROG_CC_C_O' "
4762 . "not in `$configure_ac'",
4763 uniq_scope => US_GLOBAL)
4764 unless $seen_cc_c_o;
4766 require_conf_file ("$am_file.am", FOREIGN, 'compile');
4768 # In this case we already have the directory information, so
4769 # don't add it again.
4770 $de_ansi_files{$base} = '';
4771 }
4772 else
4773 {
4774 $de_ansi_files{$base} = (($directory eq '.' || $directory eq '')
4775 ? ''
4776 : "$directory/");
4777 }
4779 return $r;
4780 }
4782 # Rewrite a single C++ source file.
4783 sub lang_cxx_rewrite
4784 {
4785 return &lang_sub_obj;
4786 }
4788 # Rewrite a single header file.
4789 sub lang_header_rewrite
4790 {
4791 # Header files are simply ignored.
4792 return LANG_IGNORE;
4793 }
4795 # Rewrite a single yacc file.
4796 sub lang_yacc_rewrite
4797 {
4798 my ($directory, $base, $ext) = @_;
4800 my $r = &lang_sub_obj;
4801 (my $newext = $ext) =~ tr/y/c/;
4802 return ($r, $newext);
4803 }
4805 # Rewrite a single yacc++ file.
4806 sub lang_yaccxx_rewrite
4807 {
4808 my ($directory, $base, $ext) = @_;
4810 my $r = &lang_sub_obj;
4811 (my $newext = $ext) =~ tr/y/c/;
4812 return ($r, $newext);
4813 }
4815 # Rewrite a single lex file.
4816 sub lang_lex_rewrite
4817 {
4818 my ($directory, $base, $ext) = @_;
4820 my $r = &lang_sub_obj;
4821 (my $newext = $ext) =~ tr/l/c/;
4822 return ($r, $newext);
4823 }
4825 # Rewrite a single lex++ file.
4826 sub lang_lexxx_rewrite
4827 {
4828 my ($directory, $base, $ext) = @_;
4830 my $r = &lang_sub_obj;
4831 (my $newext = $ext) =~ tr/l/c/;
4832 return ($r, $newext);
4833 }
4835 # Rewrite a single assembly file.
4836 sub lang_asm_rewrite
4837 {
4838 return &lang_sub_obj;
4839 }
4841 # Rewrite a single Fortran 77 file.
4842 sub lang_f77_rewrite
4843 {
4844 return LANG_PROCESS;
4845 }
4847 # Rewrite a single preprocessed Fortran 77 file.
4848 sub lang_ppf77_rewrite
4849 {
4850 return LANG_PROCESS;
4851 }
4853 # Rewrite a single ratfor file.
4854 sub lang_ratfor_rewrite
4855 {
4856 return LANG_PROCESS;
4857 }
4859 # Rewrite a single Objective C file.
4860 sub lang_objc_rewrite
4861 {
4862 return &lang_sub_obj;
4863 }
4865 # Rewrite a single Java file.
4866 sub lang_java_rewrite
4867 {
4868 return LANG_SUBDIR;
4869 }
4871 # The lang_X_finish functions are called after all source file
4872 # processing is done. Each should handle defining rules for the
4873 # language, etc. A finish function is only called if a source file of
4874 # the appropriate type has been seen.
4876 sub lang_c_finish
4877 {
4878 # Push all libobjs files onto de_ansi_files. We actually only
4879 # push files which exist in the current directory, and which are
4880 # genuine source files.
4881 foreach my $file (keys %libsources)
4882 {
4883 if ($file =~ /^(.*)\.[cly]$/ && -f "$relative_dir/$file")
4884 {
4885 $de_ansi_files{$1} = ''
4886 }
4887 }
4889 if (option 'ansi2knr' && keys %de_ansi_files)
4890 {
4891 # Make all _.c files depend on their corresponding .c files.
4892 my @objects;
4893 foreach my $base (sort keys %de_ansi_files)
4894 {
4895 # Each _.c file must depend on ansi2knr; otherwise it
4896 # might be used in a parallel build before it is built.
4897 # We need to support files in the srcdir and in the build
4898 # dir (because these files might be auto-generated. But
4899 # we can't use $< -- some makes only define $< during a
4900 # suffix rule.
4901 my $ansfile = $de_ansi_files{$base} . $base . '.c';
4902 $output_rules .= ($base . "_.c: $ansfile \$(ANSI2KNR)\n\t"
4903 . '$(CPP) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS) $(CPPFLAGS) '
4904 . '`if test -f $(srcdir)/' . $ansfile
4905 . '; then echo $(srcdir)/' . $ansfile
4906 . '; else echo ' . $ansfile . '; fi` '
4907 . "| sed 's/^# \\([0-9]\\)/#line \\1/' "
4908 . '| $(ANSI2KNR) > $@'
4909 # If ansi2knr fails then we shouldn't
4910 # create the _.c file
4911 . " || rm -f \$\@\n");
4912 push (@objects, $base . '_.$(OBJEXT)');
4913 push (@objects, $base . '_.lo')
4914 if var ('LIBTOOL');
4915 }
4917 # Make all _.o (and _.lo) files depend on ansi2knr.
4918 # Use a sneaky little hack to make it print nicely.
4919 &pretty_print_rule ('', '', @objects, ':', '$(ANSI2KNR)');
4920 }
4921 }
4923 # This is a yacc helper which is called whenever we have decided to
4924 # compile a yacc file.
4925 sub lang_yacc_target_hook
4926 {
4927 my ($self, $aggregate, $output, $input) = @_;
4929 my $flag = $aggregate . "_YFLAGS";
4930 my $flagvar = var $flag;
4931 my $YFLAGSvar = var 'YFLAGS';
4932 if (($flagvar && $flagvar->variable_value =~ /$DASH_D_PATTERN/o)
4933 || ($YFLAGSvar && $YFLAGSvar->variable_value =~ /$DASH_D_PATTERN/o))
4934 {
4935 (my $output_base = $output) =~ s/$KNOWN_EXTENSIONS_PATTERN$//;
4936 my $header = $output_base . '.h';
4938 # Found a `-d' that applies to the compilation of this file.
4939 # Add a dependency for the generated header file, and arrange
4940 # for that file to be included in the distribution.
4941 # FIXME: this fails for `nodist_*_SOURCES'.
4942 $output_rules .= ("${header}: $output\n"
4943 # Recover from removal of $header
4944 . "\t\@if test ! -f \$@; then \\\n"
4945 . "\t rm -f $output; \\\n"
4946 . "\t \$(MAKE) $output; \\\n"
4947 . "\telse :; fi\n");
4948 &push_dist_common ($header);
4949 # If the files are built in the build directory, then we want
4950 # to remove them with `make clean'. If they are in srcdir
4951 # they shouldn't be touched. However, we can't determine this
4952 # statically, and the GNU rules say that yacc/lex output files
4953 # should be removed by maintainer-clean. So that's what we
4954 # do.
4955 $clean_files{$header} = MAINTAINER_CLEAN;
4956 }
4957 # Erase $OUTPUT on `make maintainer-clean' (by GNU standards).
4958 # See the comment above for $HEADER.
4959 $clean_files{$output} = MAINTAINER_CLEAN;
4960 }
4962 # This is a lex helper which is called whenever we have decided to
4963 # compile a lex file.
4964 sub lang_lex_target_hook
4965 {
4966 my ($self, $aggregate, $output, $input) = @_;
4967 # If the files are built in the build directory, then we want to
4968 # remove them with `make clean'. If they are in srcdir they
4969 # shouldn't be touched. However, we can't determine this
4970 # statically, and the GNU rules say that yacc/lex output files
4971 # should be removed by maintainer-clean. So that's what we do.
4972 $clean_files{$output} = MAINTAINER_CLEAN;
4973 }
4975 # This is a helper for both lex and yacc.
4976 sub yacc_lex_finish_helper
4977 {
4978 return if defined $language_scratch{'lex-yacc-done'};
4979 $language_scratch{'lex-yacc-done'} = 1;
4981 # If there is more than one distinct yacc (resp lex) source file
4982 # in a given directory, then the `ylwrap' program is required to
4983 # allow parallel builds to work correctly. FIXME: for now, no
4984 # line number.
4985 require_conf_file ($configure_ac, FOREIGN, 'ylwrap');
4986 if ($config_aux_dir_set_in_configure_in)
4987 {
4988 &define_variable ('YLWRAP', $config_aux_dir . "/ylwrap", INTERNAL);
4989 }
4990 else
4991 {
4992 &define_variable ('YLWRAP', '$(top_srcdir)/ylwrap', INTERNAL);
4993 }
4994 }
4996 sub lang_yacc_finish
4997 {
4998 return if defined $language_scratch{'yacc-done'};
4999 $language_scratch{'yacc-done'} = 1;
5001 reject_var 'YACCFLAGS', "`YACCFLAGS' obsolete; use `YFLAGS' instead";
5003 &yacc_lex_finish_helper
5004 if count_files_for_language ('yacc') > 1;
5005 }
5008 sub lang_lex_finish
5009 {
5010 return if defined $language_scratch{'lex-done'};
5011 $language_scratch{'lex-done'} = 1;
5013 &yacc_lex_finish_helper
5014 if count_files_for_language ('lex') > 1;
5015 }
5018 # Given a hash table of linker names, pick the name that has the most
5019 # precedence. This is lame, but something has to have global
5020 # knowledge in order to eliminate the conflict. Add more linkers as
5021 # required.
5022 sub resolve_linker
5023 {
5024 my (%linkers) = @_;
5026 foreach my $l (qw(GCJLINK CXXLINK F77LINK OBJCLINK))
5027 {
5028 return $l if defined $linkers{$l};
5029 }
5030 return 'LINK';
5031 }
5033 # Called to indicate that an extension was used.
5034 sub saw_extension
5035 {
5036 my ($ext) = @_;
5037 if (! defined $extension_seen{$ext})
5038 {
5039 $extension_seen{$ext} = 1;
5040 }
5041 else
5042 {
5043 ++$extension_seen{$ext};
5044 }
5045 }
5047 # Return the number of files seen for a given language. Knows about
5048 # special cases we care about. FIXME: this is hideous. We need
5049 # something that involves real language objects. For instance yacc
5050 # and yaccxx could both derive from a common yacc class which would
5051 # know about the strange ylwrap requirement. (Or better yet we could
5052 # just not support legacy yacc!)
5053 sub count_files_for_language
5054 {
5055 my ($name) = @_;
5057 my @names;
5058 if ($name eq 'yacc' || $name eq 'yaccxx')
5059 {
5060 @names = ('yacc', 'yaccxx');
5061 }
5062 elsif ($name eq 'lex' || $name eq 'lexxx')
5063 {
5064 @names = ('lex', 'lexxx');
5065 }
5066 else
5067 {
5068 @names = ($name);
5069 }
5071 my $r = 0;
5072 foreach $name (@names)
5073 {
5074 my $lang = $languages{$name};
5075 foreach my $ext (@{$lang->extensions})
5076 {
5077 $r += $extension_seen{$ext}
5078 if defined $extension_seen{$ext};
5079 }
5080 }
5082 return $r
5083 }
5085 # Called to ask whether source files have been seen . If HEADERS is 1,
5086 # headers can be included.
5087 sub saw_sources_p
5088 {
5089 my ($headers) = @_;
5091 # count all the sources
5092 my $count = 0;
5093 foreach my $val (values %extension_seen)
5094 {
5095 $count += $val;
5096 }
5098 if (!$headers)
5099 {
5100 $count -= count_files_for_language ('header');
5101 }
5103 return $count > 0;
5104 }
5107 # register_language (%ATTRIBUTE)
5108 # ------------------------------
5109 # Register a single language.
5110 # Each %ATTRIBUTE is of the form ATTRIBUTE => VALUE.
5111 sub register_language (%)
5112 {
5113 my (%option) = @_;
5115 # Set the defaults.
5116 $option{'ansi'} = 0
5117 unless defined $option{'ansi'};
5118 $option{'autodep'} = 'no'
5119 unless defined $option{'autodep'};
5120 $option{'linker'} = ''
5121 unless defined $option{'linker'};
5122 $option{'flags'} = []
5123 unless defined $option{'flags'};
5124 $option{'output_extensions'} = sub { return ( '.$(OBJEXT)', '.lo' ) }
5125 unless defined $option{'output_extensions'};
5127 my $lang = new Language (%option);
5129 # Fill indexes.
5130 $extension_map{$_} = $lang->name foreach @{$lang->extensions};
5131 $languages{$lang->name} = $lang;
5133 # Update the pattern of known extensions.
5134 accept_extensions (@{$lang->extensions});
5136 # Upate the $suffix_rule map.
5137 foreach my $suffix (@{$lang->extensions})
5138 {
5139 foreach my $dest (&{$lang->output_extensions} ($suffix))
5140 {
5141 register_suffix_rule (INTERNAL, $suffix, $dest);
5142 }
5143 }
5144 }
5146 # derive_suffix ($EXT, $OBJ)
5147 # --------------------------
5148 # This function is used to find a path from a user-specified suffix $EXT
5149 # to $OBJ or to some other suffix we recognize internally, e.g. `cc'.
5150 sub derive_suffix ($$)
5151 {
5152 my ($source_ext, $obj) = @_;
5154 while (! $extension_map{$source_ext}
5155 && $source_ext ne $obj
5156 && exists $suffix_rules->{$source_ext}
5157 && exists $suffix_rules->{$source_ext}{$obj})
5158 {
5159 $source_ext = $suffix_rules->{$source_ext}{$obj}[0];
5160 }
5162 return $source_ext;
5163 }
5166 ################################################################
5168 # Pretty-print something and append to output_rules.
5169 sub pretty_print_rule
5170 {
5171 $output_rules .= &makefile_wrap (@_);
5172 }
5175 ################################################################
5178 ## -------------------------------- ##
5179 ## Handling the conditional stack. ##
5180 ## -------------------------------- ##
5183 # $STRING
5184 # make_conditional_string ($NEGATE, $COND)
5185 # ----------------------------------------
5186 sub make_conditional_string ($$)
5187 {
5188 my ($negate, $cond) = @_;
5189 $cond = "${cond}_TRUE"
5190 unless $cond =~ /^TRUE|FALSE$/;
5191 $cond = Automake::Condition::conditional_negate ($cond)
5192 if $negate;
5193 return $cond;
5194 }
5197 # $COND
5198 # cond_stack_if ($NEGATE, $COND, $WHERE)
5199 # --------------------------------------
5200 sub cond_stack_if ($$$)
5201 {
5202 my ($negate, $cond, $where) = @_;
5204 error $where, "$cond does not appear in AM_CONDITIONAL"
5205 if ! $configure_cond{$cond} && $cond !~ /^TRUE|FALSE$/;
5207 push (@cond_stack, make_conditional_string ($negate, $cond));
5209 return new Automake::Condition (@cond_stack);
5210 }
5213 # $COND
5214 # cond_stack_else ($NEGATE, $COND, $WHERE)
5215 # ----------------------------------------
5216 sub cond_stack_else ($$$)
5217 {
5218 my ($negate, $cond, $where) = @_;
5220 if (! @cond_stack)
5221 {
5222 error $where, "else without if";
5223 return FALSE;
5224 }
5226 $cond_stack[$#cond_stack] =
5227 Automake::Condition::conditional_negate ($cond_stack[$#cond_stack]);
5229 # If $COND is given, check against it.
5230 if (defined $cond)
5231 {
5232 $cond = make_conditional_string ($negate, $cond);
5234 error ($where, "else reminder ($negate$cond) incompatible with "
5235 . "current conditional: $cond_stack[$#cond_stack]")
5236 if $cond_stack[$#cond_stack] ne $cond;
5237 }
5239 return new Automake::Condition (@cond_stack);
5240 }
5243 # $COND
5244 # cond_stack_endif ($NEGATE, $COND, $WHERE)
5245 # -----------------------------------------
5246 sub cond_stack_endif ($$$)
5247 {
5248 my ($negate, $cond, $where) = @_;
5249 my $old_cond;
5251 if (! @cond_stack)
5252 {
5253 error $where, "endif without if";
5254 return TRUE;
5255 }
5257 # If $COND is given, check against it.
5258 if (defined $cond)
5259 {
5260 $cond = make_conditional_string ($negate, $cond);
5262 error ($where, "endif reminder ($negate$cond) incompatible with "
5263 . "current conditional: $cond_stack[$#cond_stack]")
5264 if $cond_stack[$#cond_stack] ne $cond;
5265 }
5267 pop @cond_stack;
5269 return new Automake::Condition (@cond_stack);
5270 }
5276 ## ------------------------ ##
5277 ## Handling the variables. ##
5278 ## ------------------------ ##
5281 # &define_pretty_variable ($VAR, $COND, $WHERE, @VALUE)
5282 # -----------------------------------------------------
5283 # Like define_variable, but the value is a list, and the variable may
5284 # be defined conditionally. The second argument is the Condition
5285 # under which the value should be defined; this should be the empty
5286 # string to define the variable unconditionally. The third argument
5287 # is a list holding the values to use for the variable. The value is
5288 # pretty printed in the output file.
5289 sub define_pretty_variable ($$$@)
5290 {
5291 my ($var, $cond, $where, @value) = @_;
5293 if (! vardef ($var, $cond))
5294 {
5295 Automake::Variable::define ($var, VAR_AUTOMAKE, '', $cond, "@value",
5296 '', $where, VAR_PRETTY);
5297 rvar ($var)->rdef ($cond)->set_seen;
5298 }
5299 }
5302 # define_variable ($VAR, $VALUE, $WHERE)
5303 # --------------------------------------
5304 # Define a new user variable VAR to VALUE, but only if not already defined.
5305 sub define_variable ($$$)
5306 {
5307 my ($var, $value, $where) = @_;
5308 define_pretty_variable ($var, TRUE, $where, $value);
5309 }
5312 # define_files_variable ($VAR, \@BASENAME, $EXTENSION, $WHERE)
5313 # -----------------------------------------------------------
5314 # Define the $VAR which content is the list of file names composed of
5315 # a @BASENAME and the $EXTENSION.
5316 sub define_files_variable ($\@$$)
5317 {
5318 my ($var, $basename, $extension, $where) = @_;
5319 define_variable ($var,
5320 join (' ', map { "$_.$extension" } @$basename),
5321 $where);
5322 }
5325 # Like define_variable, but define a variable to be the configure
5326 # substitution by the same name.
5327 sub define_configure_variable ($)
5328 {
5329 my ($var) = @_;
5331 my $pretty = VAR_ASIS;
5332 my $owner = VAR_CONFIGURE;
5334 # Do not output the ANSI2KNR configure variable -- we AC_SUBST
5335 # it in protos.m4, but later redefine it elsewhere. This is
5336 # pretty hacky. We also don't output AMDEPBACKSLASH: it might
5337 # be subst'd by `\', which certainly would not be appreciated by
5338 # Make.
5339 if ($var eq 'ANSI2KNR' || $var eq 'AMDEPBACKSLASH')
5340 {
5341 $pretty = VAR_SILENT;
5342 $owner = VAR_AUTOMAKE;
5343 }
5345 Automake::Variable::define ($var, $owner, '', TRUE, subst $var,
5346 '', $configure_vars{$var}, $pretty);
5347 }
5350 # define_compiler_variable ($LANG)
5351 # --------------------------------
5352 # Define a compiler variable. We also handle defining the `LT'
5353 # version of the command when using libtool.
5354 sub define_compiler_variable ($)
5355 {
5356 my ($lang) = @_;
5358 my ($var, $value) = ($lang->compiler, $lang->compile);
5359 &define_variable ($var, $value, INTERNAL);
5360 &define_variable ("LT$var", "\$(LIBTOOL) --mode=compile $value", INTERNAL)
5361 if var ('LIBTOOL');
5362 }
5365 # define_linker_variable ($LANG)
5366 # ------------------------------
5367 # Define linker variables.
5368 sub define_linker_variable ($)
5369 {
5370 my ($lang) = @_;
5372 my ($var, $value) = ($lang->lder, $lang->ld);
5373 # CCLD = $(CC).
5374 &define_variable ($lang->lder, $lang->ld, INTERNAL);
5375 # CCLINK = $(CCLD) blah blah...
5376 &define_variable ($lang->linker,
5377 ((var ('LIBTOOL') ? '$(LIBTOOL) --mode=link ' : '')
5378 . $lang->link),
5379 INTERNAL);
5380 }
5382 ################################################################
5384 # &check_trailing_slash ($WHERE, $LINE)
5385 # --------------------------------------
5386 # Return 1 iff $LINE ends with a slash.
5387 # Might modify $LINE.
5388 sub check_trailing_slash ($\$)
5389 {
5390 my ($where, $line) = @_;
5392 # Ignore `##' lines.
5393 return 0 if $$line =~ /$IGNORE_PATTERN/o;
5395 # Catch and fix a common error.
5396 msg "syntax", $where, "whitespace following trailing backslash"
5397 if $$line =~ s/\\\s+\n$/\\\n/;
5399 return $$line =~ /\\$/;
5400 }
5403 # &read_am_file ($AMFILE, $WHERE)
5404 # -------------------------------
5405 # Read Makefile.am and set up %contents. Simultaneously copy lines
5406 # from Makefile.am into $output_trailer, or define variables as
5407 # appropriate. NOTE we put rules in the trailer section. We want
5408 # user rules to come after our generated stuff.
5409 sub read_am_file ($$)
5410 {
5411 my ($amfile, $where) = @_;
5413 my $am_file = new Automake::XFile ("< $amfile");
5414 verb "reading $amfile";
5416 # Keep track of the youngest output dependency.
5417 my $mtime = mtime $amfile;
5418 $output_deps_greatest_timestamp = $mtime
5419 if $mtime > $output_deps_greatest_timestamp;
5421 my $spacing = '';
5422 my $comment = '';
5423 my $blank = 0;
5424 my $saw_bk = 0;
5426 use constant IN_VAR_DEF => 0;
5427 use constant IN_RULE_DEF => 1;
5428 use constant IN_COMMENT => 2;
5429 my $prev_state = IN_RULE_DEF;
5431 while ($_ = $am_file->getline)
5432 {
5433 $where->set ("$amfile:$.");
5434 if (/$IGNORE_PATTERN/o)
5435 {
5436 # Merely delete comments beginning with two hashes.
5437 }
5438 elsif (/$WHITE_PATTERN/o)
5439 {
5440 error $where, "blank line following trailing backslash"
5441 if $saw_bk;
5442 # Stick a single white line before the incoming macro or rule.
5443 $spacing = "\n";
5444 $blank = 1;
5445 # Flush all comments seen so far.
5446 if ($comment ne '')
5447 {
5448 $output_vars .= $comment;
5449 $comment = '';
5450 }
5451 }
5452 elsif (/$COMMENT_PATTERN/o)
5453 {
5454 # Stick comments before the incoming macro or rule. Make
5455 # sure a blank line precedes the first block of comments.
5456 $spacing = "\n" unless $blank;
5457 $blank = 1;
5458 $comment .= $spacing . $_;
5459 $spacing = '';
5460 $prev_state = IN_COMMENT;
5461 }
5462 else
5463 {
5464 last;
5465 }
5466 $saw_bk = check_trailing_slash ($where, $_);
5467 }
5469 # We save the conditional stack on entry, and then check to make
5470 # sure it is the same on exit. This lets us conditionally include
5471 # other files.
5472 my @saved_cond_stack = @cond_stack;
5473 my $cond = new Automake::Condition (@cond_stack);
5475 my $last_var_name = '';
5476 my $last_var_type = '';
5477 my $last_var_value = '';
5478 my $last_where;
5479 # FIXME: shouldn't use $_ in this loop; it is too big.
5480 while ($_)
5481 {
5482 $where->set ("$amfile:$.");
5484 # Make sure the line is \n-terminated.
5485 chomp;
5486 $_ .= "\n";
5488 # Don't look at MAINTAINER_MODE_TRUE here. That shouldn't be
5489 # used by users. @MAINT@ is an anachronism now.
5490 $_ =~ s/\@MAINT\@//g
5491 unless $seen_maint_mode;
5493 my $new_saw_bk = check_trailing_slash ($where, $_);
5495 if (/$IGNORE_PATTERN/o)
5496 {
5497 # Merely delete comments beginning with two hashes.
5498 }
5499 elsif (/$WHITE_PATTERN/o)
5500 {
5501 # Stick a single white line before the incoming macro or rule.
5502 $spacing = "\n";
5503 error $where, "blank line following trailing backslash"
5504 if $saw_bk;
5505 }
5506 elsif (/$COMMENT_PATTERN/o)
5507 {
5508 # Stick comments before the incoming macro or rule.
5509 $comment .= $spacing . $_;
5510 $spacing = '';
5511 error $where, "comment following trailing backslash"
5512 if $saw_bk && $comment eq '';
5513 $prev_state = IN_COMMENT;
5514 }
5515 elsif ($saw_bk)
5516 {
5517 if ($prev_state == IN_RULE_DEF)
5518 {
5519 my $cond = new Automake::Condition @cond_stack;
5520 $output_trailer .= $cond->subst_string;
5521 $output_trailer .= $_;
5522 }
5523 elsif ($prev_state == IN_COMMENT)
5524 {
5525 # If the line doesn't start with a `#', add it.
5526 # We do this because a continued comment like
5527 # # A = foo \
5528 # bar \
5529 # baz
5530 # is not portable. BSD make doesn't honor
5531 # escaped newlines in comments.
5532 s/^#?/#/;
5533 $comment .= $spacing . $_;
5534 }
5535 else # $prev_state == IN_VAR_DEF
5536 {
5537 $last_var_value .= ' '
5538 unless $last_var_value =~ /\s$/;
5539 $last_var_value .= $_;
5541 if (!/\\$/)
5542 {
5543 Automake::Variable::define ($last_var_name, VAR_MAKEFILE,
5544 $last_var_type, $cond,
5545 $last_var_value, $comment,
5546 $last_where, VAR_ASIS)
5547 if $cond != FALSE;
5548 $comment = $spacing = '';
5549 }
5550 }
5551 }
5553 elsif (/$IF_PATTERN/o)
5554 {
5555 $cond = cond_stack_if ($1, $2, $where);
5556 }
5557 elsif (/$ELSE_PATTERN/o)
5558 {
5559 $cond = cond_stack_else ($1, $2, $where);
5560 }
5561 elsif (/$ENDIF_PATTERN/o)
5562 {
5563 $cond = cond_stack_endif ($1, $2, $where);
5564 }
5566 elsif (/$RULE_PATTERN/o)
5567 {
5568 # Found a rule.
5569 $prev_state = IN_RULE_DEF;
5571 # For now we have to output all definitions of user rules
5572 # and can't diagnose duplicates (see the comment in
5573 # rule_define). So we go on and ignore the return value.
5574 Automake::Rule::define ($1, $amfile, RULE_USER, $cond, $where);
5576 check_variable_expansions ($_, $where);
5578 $output_trailer .= $comment . $spacing;
5579 my $cond = new Automake::Condition @cond_stack;
5580 $output_trailer .= $cond->subst_string;
5581 $output_trailer .= $_;
5582 $comment = $spacing = '';
5583 }
5584 elsif (/$ASSIGNMENT_PATTERN/o)
5585 {
5586 # Found a macro definition.
5587 $prev_state = IN_VAR_DEF;
5588 $last_var_name = $1;
5589 $last_var_type = $2;
5590 $last_var_value = $3;
5591 $last_where = $where->clone;
5592 if ($3 ne '' && substr ($3, -1) eq "\\")
5593 {
5594 # We preserve the `\' because otherwise the long lines
5595 # that are generated will be truncated by broken
5596 # `sed's.
5597 $last_var_value = $3 . "\n";
5598 }
5600 if (!/\\$/)
5601 {
5602 Automake::Variable::define ($last_var_name, VAR_MAKEFILE,
5603 $last_var_type, $cond,
5604 $last_var_value, $comment,
5605 $last_where, VAR_ASIS)
5606 if $cond != FALSE;
5607 $comment = $spacing = '';
5608 }
5609 }
5610 elsif (/$INCLUDE_PATTERN/o)
5611 {
5612 my $path = $1;
5614 if ($path =~ s/^\$\(top_srcdir\)\///)
5615 {
5616 push (@include_stack, "\$\(top_srcdir\)/$path");
5617 # Distribute any included file.
5619 # Always use the $(top_srcdir) prefix in DIST_COMMON,
5620 # otherwise OSF make will implicitly copy the included
5621 # file in the build tree during `make distdir' to satisfy
5622 # the dependency.
5623 # (subdircond2.test and subdircond3.test will fail.)
5624 push_dist_common ("\$\(top_srcdir\)/$path");
5625 }
5626 else
5627 {
5628 $path =~ s/\$\(srcdir\)\///;
5629 push (@include_stack, "\$\(srcdir\)/$path");
5630 # Always use the $(srcdir) prefix in DIST_COMMON,
5631 # otherwise OSF make will implicitly copy the included
5632 # file in the build tree during `make distdir' to satisfy
5633 # the dependency.
5634 # (subdircond2.test and subdircond3.test will fail.)
5635 push_dist_common ("\$\(srcdir\)/$path");
5636 $path = $relative_dir . "/" . $path if $relative_dir ne '.';
5637 }
5638 $where->push_context ("`$path' included from here");
5639 &read_am_file ($path, $where);
5640 $where->pop_context;
5641 }
5642 else
5643 {
5644 # This isn't an error; it is probably a continued rule.
5645 # In fact, this is what we assume.
5646 $prev_state = IN_RULE_DEF;
5647 check_variable_expansions ($_, $where);
5648 $output_trailer .= $comment . $spacing;
5649 my $cond = new Automake::Condition @cond_stack;
5650 $output_trailer .= $cond->subst_string;
5651 $output_trailer .= $_;
5652 $comment = $spacing = '';
5653 error $where, "`#' comment at start of rule is unportable"
5654 if $_ =~ /^\t\s*\#/;
5655 }
5657 $saw_bk = $new_saw_bk;
5658 $_ = $am_file->getline;
5659 }
5661 $output_trailer .= $comment;
5663 error ($where, "trailing backslash on last line")
5664 if $saw_bk;
5666 error ($where, (@cond_stack ? "unterminated conditionals: @cond_stack"
5667 : "too many conditionals closed in include file"))
5668 if "@saved_cond_stack" ne "@cond_stack";
5669 }
5672 # define_standard_variables ()
5673 # ----------------------------
5674 # A helper for read_main_am_file which initializes configure variables
5675 # and variables from header-vars.am.
5676 sub define_standard_variables
5677 {
5678 my $saved_output_vars = $output_vars;
5679 my ($comments, undef, $rules) =
5680 file_contents_internal (1, "$libdir/am/header-vars.am",
5681 new Automake::Location);
5683 foreach my $var (sort keys %configure_vars)
5684 {
5685 &define_configure_variable ($var);
5686 }
5688 $output_vars .= $comments . $rules;
5689 }
5691 # Read main am file.
5692 sub read_main_am_file
5693 {
5694 my ($amfile) = @_;
5696 # This supports the strange variable tricks we are about to play.
5697 prog_error (macros_dump () . "variable defined before read_main_am_file")
5698 if (scalar (variables) > 0);
5700 # Generate copyright header for generated Makefile.in.
5701 # We do discard the output of predefined variables, handled below.
5702 $output_vars = ("# $in_file_name generated by automake "
5703 . $VERSION . " from $am_file_name.\n");
5704 $output_vars .= '# ' . subst ('configure_input') . "\n";
5705 $output_vars .= $gen_copyright;
5707 # We want to predefine as many variables as possible. This lets
5708 # the user set them with `+=' in Makefile.am.
5709 &define_standard_variables;
5711 # Read user file, which might override some of our values.
5712 &read_am_file ($amfile, new Automake::Location);
5713 }
5717 ################################################################
5719 # $FLATTENED
5720 # &flatten ($STRING)
5721 # ------------------
5722 # Flatten the $STRING and return the result.
5723 sub flatten
5724 {
5725 $_ = shift;
5727 s/\\\n//somg;
5728 s/\s+/ /g;
5729 s/^ //;
5730 s/ $//;
5732 return $_;
5733 }
5736 # @PARAGRAPHS
5737 # &make_paragraphs ($MAKEFILE, [%TRANSFORM])
5738 # ------------------------------------------
5739 # Load a $MAKEFILE, apply the %TRANSFORM, and return it as a list of
5740 # paragraphs.
5741 sub make_paragraphs ($%)
5742 {
5743 my ($file, %transform) = @_;
5745 # Complete %transform with global options and make it a Perl
5746 # $command.
5747 my $command =
5748 "s/$IGNORE_PATTERN//gm;"
5749 . transform (%transform,
5750 'CYGNUS' => !! option 'cygnus',
5751 'MAINTAINER-MODE'
5752 => $seen_maint_mode ? subst ('MAINTAINER_MODE_TRUE') : '',
5754 'BZIP2' => !! option 'dist-bzip2',
5755 'COMPRESS' => !! option 'dist-tarZ',
5756 'GZIP' => ! option 'no-dist-gzip',
5757 'SHAR' => !! option 'dist-shar',
5758 'ZIP' => !! option 'dist-zip',
5760 'INSTALL-INFO' => ! option 'no-installinfo',
5761 'INSTALL-MAN' => ! option 'no-installman',
5762 'CK-NEWS' => !! option 'check-news',
5764 'SUBDIRS' => !! var ('SUBDIRS'),
5765 'TOPDIR' => backname ($relative_dir),
5766 'TOPDIR_P' => $relative_dir eq '.',
5768 'BUILD' => $seen_canonical == AC_CANONICAL_SYSTEM,
5769 'HOST' => $seen_canonical,
5770 'TARGET' => $seen_canonical == AC_CANONICAL_SYSTEM,
5772 'LIBTOOL' => !! var ('LIBTOOL'))
5773 # We don't need more than two consecutive new-lines.
5774 . 's/\n{3,}/\n\n/g';
5776 # Swallow the file and apply the COMMAND.
5777 my $fc_file = new Automake::XFile "< $file";
5778 # Looks stupid?
5779 verb "reading $file";
5780 my $saved_dollar_slash = $/;
5781 undef $/;
5782 $_ = $fc_file->getline;
5783 $/ = $saved_dollar_slash;
5784 eval $command;
5785 $fc_file->close;
5786 my $content = $_;
5788 # Split at unescaped new lines.
5789 my @lines = split (/(?<!\\)\n/, $content);
5790 my @res;
5792 while (defined ($_ = shift @lines))
5793 {
5794 my $paragraph = "$_";
5795 # If we are a rule, eat as long as we start with a tab.
5796 if (/$RULE_PATTERN/smo)
5797 {
5798 while (defined ($_ = shift @lines) && $_ =~ /^\t/)
5799 {
5800 $paragraph .= "\n$_";
5801 }
5802 unshift (@lines, $_);
5803 }
5805 # If we are a comments, eat as much comments as you can.
5806 elsif (/$COMMENT_PATTERN/smo)
5807 {
5808 while (defined ($_ = shift @lines)
5809 && $_ =~ /$COMMENT_PATTERN/smo)
5810 {
5811 $paragraph .= "\n$_";
5812 }
5813 unshift (@lines, $_);
5814 }
5816 push @res, $paragraph;
5817 $paragraph = '';
5818 }
5820 return @res;
5821 }
5825 # ($COMMENT, $VARIABLES, $RULES)
5826 # &file_contents_internal ($IS_AM, $FILE, $WHERE, [%TRANSFORM])
5827 # -------------------------------------------------------------
5828 # Return contents of a file from $libdir/am, automatically skipping
5829 # macros or rules which are already known. $IS_AM iff the caller is
5830 # reading an Automake file (as opposed to the user's Makefile.am).
5831 sub file_contents_internal ($$$%)
5832 {
5833 my ($is_am, $file, $where, %transform) = @_;
5835 $where->set ($file);
5837 my $result_vars = '';
5838 my $result_rules = '';
5839 my $comment = '';
5840 my $spacing = '';
5842 # The following flags are used to track rules spanning across
5843 # multiple paragraphs.
5844 my $is_rule = 0; # 1 if we are processing a rule.
5845 my $discard_rule = 0; # 1 if the current rule should not be output.
5847 # We save the conditional stack on entry, and then check to make
5848 # sure it is the same on exit. This lets us conditionally include
5849 # other files.
5850 my @saved_cond_stack = @cond_stack;
5851 my $cond = new Automake::Condition (@cond_stack);
5853 foreach (make_paragraphs ($file, %transform))
5854 {
5855 # FIXME: no line number available.
5856 $where->set ($file);
5858 # Sanity checks.
5859 error $where, "blank line following trailing backslash:\n$_"
5860 if /\\$/;
5861 error $where, "comment following trailing backslash:\n$_"
5862 if /\\#/;
5864 if (/^$/)
5865 {
5866 $is_rule = 0;
5867 # Stick empty line before the incoming macro or rule.
5868 $spacing = "\n";
5869 }
5870 elsif (/$COMMENT_PATTERN/mso)
5871 {
5872 $is_rule = 0;
5873 # Stick comments before the incoming macro or rule.
5874 $comment = "$_\n";
5875 }
5877 # Handle inclusion of other files.
5878 elsif (/$INCLUDE_PATTERN/o)
5879 {
5880 if ($cond != FALSE)
5881 {
5882 my $file = ($is_am ? "$libdir/am/" : '') . $1;
5883 $where->push_context ("`$file' included from here");
5884 # N-ary `.=' fails.
5885 my ($com, $vars, $rules)
5886 = file_contents_internal ($is_am, $file, $where, %transform);
5887 $where->pop_context;
5888 $comment .= $com;
5889 $result_vars .= $vars;
5890 $result_rules .= $rules;
5891 }
5892 }
5894 # Handling the conditionals.
5895 elsif (/$IF_PATTERN/o)
5896 {
5897 $cond = cond_stack_if ($1, $2, $file);
5898 }
5899 elsif (/$ELSE_PATTERN/o)
5900 {
5901 $cond = cond_stack_else ($1, $2, $file);
5902 }
5903 elsif (/$ENDIF_PATTERN/o)
5904 {
5905 $cond = cond_stack_endif ($1, $2, $file);
5906 }
5908 # Handling rules.
5909 elsif (/$RULE_PATTERN/mso)
5910 {
5911 $is_rule = 1;
5912 $discard_rule = 0;
5913 # Separate relationship from optional actions: the first
5914 # `new-line tab" not preceded by backslash (continuation
5915 # line).
5916 my $paragraph = $_;
5917 /^(.*?)(?:(?<!\\)\n(\t.*))?$/s;
5918 my ($relationship, $actions) = ($1, $2 || '');
5920 # Separate targets from dependencies: the first colon.
5921 $relationship =~ /^([^:]+\S+) *: *(.*)$/som;
5922 my ($targets, $dependencies) = ($1, $2);
5923 # Remove the escaped new lines.
5924 # I don't know why, but I have to use a tmp $flat_deps.
5925 my $flat_deps = &flatten ($dependencies);
5926 my @deps = split (' ', $flat_deps);
5928 foreach (split (' ' , $targets))
5929 {
5930 # FIXME: 1. We are not robust to people defining several targets
5931 # at once, only some of them being in %dependencies. The
5932 # actions from the targets in %dependencies are usually generated
5933 # from the content of %actions, but if some targets in $targets
5934 # are not in %dependencies the ELSE branch will output
5935 # a rule for all $targets (i.e. the targets which are both
5936 # in %dependencies and $targets will have two rules).
5938 # FIXME: 2. The logic here is not able to output a
5939 # multi-paragraph rule several time (e.g. for each condition
5940 # it is defined for) because it only knows the first paragraph.
5942 # FIXME: 3. We are not robust to people defining a subset
5943 # of a previously defined "multiple-target" rule. E.g.
5944 # `foo:' after `foo bar:'.
5946 # Output only if not in FALSE.
5947 if (defined $dependencies{$_} && $cond != FALSE)
5948 {
5949 &depend ($_, @deps);
5950 if ($actions{$_})
5951 {
5952 $actions{$_} .= "\n$actions" if $actions;
5953 }
5954 else
5955 {
5956 $actions{$_} = $actions;
5957 }
5958 }
5959 else
5960 {
5961 # Free-lance dependency. Output the rule for all the
5962 # targets instead of one by one.
5963 my @undefined_conds =
5964 Automake::Rule::define ($targets, $file,
5965 $is_am ? RULE_AUTOMAKE : RULE_USER,
5966 $cond, $where);
5967 for my $undefined_cond (@undefined_conds)
5968 {
5969 my $condparagraph = $paragraph;
5970 $condparagraph =~ s/^/$undefined_cond->subst_string/gme;
5971 $result_rules .= "$spacing$comment$condparagraph\n";
5972 }
5973 if (scalar @undefined_conds == 0)
5974 {
5975 # Remember to discard next paragraphs
5976 # if they belong to this rule.
5977 # (but see also FIXME: #2 above.)
5978 $discard_rule = 1;
5979 }
5980 $comment = $spacing = '';
5981 last;
5982 }
5983 }
5984 }
5986 elsif (/$ASSIGNMENT_PATTERN/mso)
5987 {
5988 my ($var, $type, $val) = ($1, $2, $3);
5989 error $where, "variable `$var' with trailing backslash"
5990 if /\\$/;
5992 $is_rule = 0;
5994 Automake::Variable::define ($var,
5995 $is_am ? VAR_AUTOMAKE : VAR_MAKEFILE,
5996 $type, $cond, $val, $comment, $where,
5997 VAR_ASIS)
5998 if $cond != FALSE;
6000 $comment = $spacing = '';
6001 }
6002 else
6003 {
6004 # This isn't an error; it is probably some tokens which
6005 # configure is supposed to replace, such as `@SET-MAKE@',
6006 # or some part of a rule cut by an if/endif.
6007 if (! $cond->false && ! ($is_rule && $discard_rule))
6008 {
6009 s/^/$cond->subst_string/gme;
6010 $result_rules .= "$spacing$comment$_\n";
6011 }
6012 $comment = $spacing = '';
6013 }
6014 }
6016 error ($where, @cond_stack ?
6017 "unterminated conditionals: @cond_stack" :
6018 "too many conditionals closed in include file")
6019 if "@saved_cond_stack" ne "@cond_stack";
6021 return ($comment, $result_vars, $result_rules);
6022 }
6025 # $CONTENTS
6026 # &file_contents ($BASENAME, $WHERE, [%TRANSFORM])
6027 # ------------------------------------------------
6028 # Return contents of a file from $libdir/am, automatically skipping
6029 # macros or rules which are already known.
6030 sub file_contents ($$%)
6031 {
6032 my ($basename, $where, %transform) = @_;
6033 my ($comments, $variables, $rules) =
6034 file_contents_internal (1, "$libdir/am/$basename.am", $where,
6035 %transform);
6036 return "$comments$variables$rules";
6037 }
6040 # $REGEXP
6041 # &transform (%PAIRS)
6042 # -------------------
6043 # For each ($TOKEN, $VAL) in %PAIRS produce a replacement expression
6044 # suitable for file_contents which:
6045 # - replaces %$TOKEN% with $VAL,
6046 # - enables/disables ?$TOKEN? and ?!$TOKEN?,
6047 # - replaces %?$TOKEN% with TRUE or FALSE.
6048 sub transform (%)
6049 {
6050 my (%pairs) = @_;
6051 my $result = '';
6053 while (my ($token, $val) = each %pairs)
6054 {
6055 $result .= "s/\Q%$token%\E/\Q$val\E/gm;";
6056 if ($val)
6057 {
6058 $result .= "s/\Q?$token?\E//gm;s/^.*\Q?!$token?\E.*\\n//gm;";
6059 $result .= "s/\Q%?$token%\E/TRUE/gm;";
6060 }
6061 else
6062 {
6063 $result .= "s/\Q?!$token?\E//gm;s/^.*\Q?$token?\E.*\\n//gm;";
6064 $result .= "s/\Q%?$token%\E/FALSE/gm;";
6065 }
6066 }
6068 return $result;
6069 }
6072 # &append_exeext ($MACRO)
6073 # -----------------------
6074 # Macro is an Automake magic macro which primary is PROGRAMS, e.g.
6075 # bin_PROGRAMS. Make sure these programs have $(EXEEXT) appended.
6076 sub append_exeext ($)
6077 {
6078 my ($macro) = @_;
6080 prog_error "append_exeext ($macro)"
6081 unless $macro =~ /_PROGRAMS$/;
6083 transform_variable_recursively
6084 ($macro, $macro, 'am__EXEEXT', 0, INTERNAL,
6085 sub {
6086 my ($subvar, $val, $cond, $full_cond) = @_;
6087 # Append $(EXEEXT) unless the user did it already, or it's a
6088 # @substitution@.
6089 $val .= '$(EXEEXT)' unless $val =~ /(?:\$\(EXEEXT\)$|^[@]\w+[@]$)/;
6090 return $val;
6091 });
6092 }
6095 # @PREFIX
6096 # &am_primary_prefixes ($PRIMARY, $CAN_DIST, @PREFIXES)
6097 # -----------------------------------------------------
6098 # Find all variable prefixes that are used for install directories. A
6099 # prefix `zar' qualifies iff:
6100 #
6101 # * `zardir' is a variable.
6102 # * `zar_PRIMARY' is a variable.
6103 #
6104 # As a side effect, it looks for misspellings. It is an error to have
6105 # a variable ending in a "reserved" suffix whose prefix is unknown, e.g.
6106 # "bin_PROGRAMS". However, unusual prefixes are allowed if a variable
6107 # of the same name (with "dir" appended) exists. For instance, if the
6108 # variable "zardir" is defined, then "zar_PROGRAMS" becomes valid.
6109 # This is to provide a little extra flexibility in those cases which
6110 # need it.
6111 sub am_primary_prefixes ($$@)
6112 {
6113 my ($primary, $can_dist, @prefixes) = @_;
6115 local $_;
6116 my %valid = map { $_ => 0 } @prefixes;
6117 $valid{'EXTRA'} = 0;
6118 foreach my $var (variables)
6119 {
6120 # Automake is allowed to define variables that look like primaries
6121 # but which aren't. E.g. INSTALL_sh_DATA.
6122 # Autoconf can also define variables like INSTALL_DATA, so
6123 # ignore all configure variables (at least those which are not
6124 # redefined in Makefile.am).
6125 # FIXME: We should make sure that these variables are not
6126 # conditionally defined (or else adjust the condition below).
6127 my $def = $var->def (TRUE);
6128 next if $def && $def->owner != VAR_MAKEFILE;
6130 my $varname = $var->name;
6132 if ($varname =~ /^(nobase_)?(dist_|nodist_)?(.*)_$primary$/)
6133 {
6134 my ($base, $dist, $X) = ($1 || '', $2 || '', $3 || '');
6135 if ($dist ne '' && ! $can_dist)
6136 {
6137 err_var ($var,
6138 "invalid variable `$varname': `dist' is forbidden");
6139 }
6140 # Standard directories must be explicitly allowed.
6141 elsif (! defined $valid{$X} && exists $standard_prefix{$X})
6142 {
6143 err_var ($var,
6144 "`${X}dir' is not a legitimate directory " .
6145 "for `$primary'");
6146 }
6147 # A not explicitly valid directory is allowed if Xdir is defined.
6148 elsif (! defined $valid{$X} &&
6149 $var->requires_variables ("`$varname' is used", "${X}dir"))
6150 {
6151 # Nothing to do. Any error message has been output
6152 # by $var->requires_variables.
6153 }
6154 else
6155 {
6156 # Ensure all extended prefixes are actually used.
6157 $valid{"$base$dist$X"} = 1;
6158 }
6159 }
6160 }
6162 # Return only those which are actually defined.
6163 return sort grep { var ($_ . '_' . $primary) } keys %valid;
6164 }
6167 # Handle `where_HOW' variable magic. Does all lookups, generates
6168 # install code, and possibly generates code to define the primary
6169 # variable. The first argument is the name of the .am file to munge,
6170 # the second argument is the primary variable (e.g. HEADERS), and all
6171 # subsequent arguments are possible installation locations.
6172 #
6173 # Returns list of [$location, $value] pairs, where
6174 # $value's are the values in all where_HOW variable, and $location
6175 # there associated location (the place here their parent variables were
6176 # defined).
6177 #
6178 # FIXME: this should be rewritten to be cleaner. It should be broken
6179 # up into multiple functions.
6180 #
6181 # Usage is: am_install_var (OPTION..., file, HOW, where...)
6182 sub am_install_var
6183 {
6184 my (@args) = @_;
6186 my $do_require = 1;
6187 my $can_dist = 0;
6188 my $default_dist = 0;
6189 while (@args)
6190 {
6191 if ($args[0] eq '-noextra')
6192 {
6193 $do_require = 0;
6194 }
6195 elsif ($args[0] eq '-candist')
6196 {
6197 $can_dist = 1;
6198 }
6199 elsif ($args[0] eq '-defaultdist')
6200 {
6201 $default_dist = 1;
6202 $can_dist = 1;
6203 }
6204 elsif ($args[0] !~ /^-/)
6205 {
6206 last;
6207 }
6208 shift (@args);
6209 }
6211 my ($file, $primary, @prefix) = @args;
6213 # Now that configure substitutions are allowed in where_HOW
6214 # variables, it is an error to actually define the primary. We
6215 # allow `JAVA', as it is customarily used to mean the Java
6216 # interpreter. This is but one of several Java hacks. Similarly,
6217 # `PYTHON' is customarily used to mean the Python interpreter.
6218 reject_var $primary, "`$primary' is an anachronism"
6219 unless $primary eq 'JAVA' || $primary eq 'PYTHON';
6221 # Get the prefixes which are valid and actually used.
6222 @prefix = am_primary_prefixes ($primary, $can_dist, @prefix);
6224 # If a primary includes a configure substitution, then the EXTRA_
6225 # form is required. Otherwise we can't properly do our job.
6226 my $require_extra;
6228 my @used = ();
6229 my @result = ();
6231 # True if the iteration is the first one. Used for instance to
6232 # output parts of the associated file only once.
6233 my $first = 1;
6234 foreach my $X (@prefix)
6235 {
6236 my $nodir_name = $X;
6237 my $one_name = $X . '_' . $primary;
6238 my $one_var = var $one_name;
6240 my $strip_subdir = 1;
6241 # If subdir prefix should be preserved, do so.
6242 if ($nodir_name =~ /^nobase_/)
6243 {
6244 $strip_subdir = 0;
6245 $nodir_name =~ s/^nobase_//;
6246 }
6248 # If files should be distributed, do so.
6249 my $dist_p = 0;
6250 if ($can_dist)
6251 {
6252 $dist_p = (($default_dist && $nodir_name !~ /^nodist_/)
6253 || (! $default_dist && $nodir_name =~ /^dist_/));
6254 $nodir_name =~ s/^(dist|nodist)_//;
6255 }
6258 # Use the location of the currently processed variable.
6259 # We are not processing a particular condition, so pick the first
6260 # available.
6261 my $tmpcond = $one_var->conditions->one_cond;
6262 my $where = $one_var->rdef ($tmpcond)->location->clone;
6264 # Append actual contents of where_PRIMARY variable to
6265 # @result, skipping @substitutions@.
6266 foreach my $locvals ($one_var->loc_and_value_as_list_recursive ('all'))
6267 {
6268 my ($loc, $value) = @$locvals;
6269 # Skip configure substitutions.
6270 if ($value =~ /^\@.*\@$/)
6271 {
6272 if ($nodir_name eq 'EXTRA')
6273 {
6274 error ($where,
6275 "`$one_name' contains configure substitution, "
6276 . "but shouldn't");
6277 }
6278 # Check here to make sure variables defined in
6279 # configure.ac do not imply that EXTRA_PRIMARY
6280 # must be defined.
6281 elsif (! defined $configure_vars{$one_name})
6282 {
6283 $require_extra = $one_name
6284 if $do_require;
6285 }
6286 }
6287 else
6288 {
6289 push (@result, $locvals);
6290 }
6291 }
6292 # A blatant hack: we rewrite each _PROGRAMS primary to include
6293 # EXEEXT.
6294 append_exeext ($one_name)
6295 if $primary eq 'PROGRAMS';
6296 # "EXTRA" shouldn't be used when generating clean targets,
6297 # all, or install targets. We used to warn if EXTRA_FOO was
6298 # defined uselessly, but this was annoying.
6299 next
6300 if $nodir_name eq 'EXTRA';
6302 if ($nodir_name eq 'check')
6303 {
6304 push (@check, '$(' . $one_name . ')');
6305 }
6306 else
6307 {
6308 push (@used, '$(' . $one_name . ')');
6309 }
6311 # Is this to be installed?
6312 my $install_p = $nodir_name ne 'noinst' && $nodir_name ne 'check';
6314 # If so, with install-exec? (or install-data?).
6315 my $exec_p = ($nodir_name =~ /$EXEC_DIR_PATTERN/o);
6317 my $check_options_p = $install_p && !! option 'std-options';
6319 # Use the location of the currently processed variable as context.
6320 $where->push_context ("while processing `$one_name'");
6322 # Singular form of $PRIMARY.
6323 (my $one_primary = $primary) =~ s/S$//;
6324 $output_rules .= &file_contents ($file, $where,
6325 FIRST => $first,
6327 PRIMARY => $primary,
6328 ONE_PRIMARY => $one_primary,
6329 DIR => $X,
6330 NDIR => $nodir_name,
6331 BASE => $strip_subdir,
6333 EXEC => $exec_p,
6334 INSTALL => $install_p,
6335 DIST => $dist_p,
6336 'CK-OPTS' => $check_options_p);
6338 $first = 0;
6339 }
6341 # The JAVA variable is used as the name of the Java interpreter.
6342 # The PYTHON variable is used as the name of the Python interpreter.
6343 if (@used && $primary ne 'JAVA' && $primary ne 'PYTHON')
6344 {
6345 # Define it.
6346 define_pretty_variable ($primary, TRUE, INTERNAL, @used);
6347 $output_vars .= "\n";
6348 }
6350 err_var ($require_extra,
6351 "`$require_extra' contains configure substitution,\n"
6352 . "but `EXTRA_$primary' not defined")
6353 if ($require_extra && ! var ('EXTRA_' . $primary));
6355 # Push here because PRIMARY might be configure time determined.
6356 push (@all, '$(' . $primary . ')')
6357 if @used && $primary ne 'JAVA' && $primary ne 'PYTHON';
6359 # Make the result unique. This lets the user use conditionals in
6360 # a natural way, but still lets us program lazily -- we don't have
6361 # to worry about handling a particular object more than once.
6362 # We will keep only one location per object.
6363 my %result = ();
6364 for my $pair (@result)
6365 {
6366 my ($loc, $val) = @$pair;
6367 $result{$val} = $loc;
6368 }
6369 my @l = sort keys %result;
6370 return map { [$result{$_}->clone, $_] } @l;
6371 }
6374 ################################################################
6376 # Each key in this hash is the name of a directory holding a
6377 # Makefile.in. These variables are local to `is_make_dir'.
6378 my %make_dirs = ();
6379 my $make_dirs_set = 0;
6381 sub is_make_dir
6382 {
6383 my ($dir) = @_;
6384 if (! $make_dirs_set)
6385 {
6386 foreach my $iter (@configure_input_files)
6387 {
6388 $make_dirs{dirname ($iter)} = 1;
6389 }
6390 # We also want to notice Makefile.in's.
6391 foreach my $iter (@other_input_files)
6392 {
6393 if ($iter =~ /Makefile\.in$/)
6394 {
6395 $make_dirs{dirname ($iter)} = 1;
6396 }
6397 }
6398 $make_dirs_set = 1;
6399 }
6400 return defined $make_dirs{$dir};
6401 }
6403 ################################################################
6405 # This variable is local to the "require file" set of functions.
6406 my @require_file_paths = ();
6409 # &maybe_push_required_file ($DIR, $FILE, $FULLFILE)
6410 # --------------------------------------------------
6411 # See if we want to push this file onto dist_common. This function
6412 # encodes the rules for deciding when to do so.
6413 sub maybe_push_required_file
6414 {
6415 my ($dir, $file, $fullfile) = @_;
6417 if ($dir eq $relative_dir)
6418 {
6419 push_dist_common ($file);
6420 return 1;
6421 }
6422 elsif ($relative_dir eq '.' && ! &is_make_dir ($dir))
6423 {
6424 # If we are doing the topmost directory, and the file is in a
6425 # subdir which does not have a Makefile, then we distribute it
6426 # here.
6427 push_dist_common ($fullfile);
6428 return 1;
6429 }
6430 return 0;
6431 }
6434 # &require_file_internal ($WHERE, $MYSTRICT, @FILES)
6435 # --------------------------------------------------
6436 # Verify that the file must exist in the current directory.
6437 # $MYSTRICT is the strictness level at which this file becomes required.
6438 #
6439 # Must set require_file_paths before calling this function.
6440 # require_file_paths is set to hold a single directory (the one in
6441 # which the first file was found) before return.
6442 sub require_file_internal ($$@)
6443 {
6444 my ($where, $mystrict, @files) = @_;
6446 foreach my $file (@files)
6447 {
6448 my $fullfile;
6449 my $errdir;
6450 my $errfile;
6451 my $save_dir;
6453 my $found_it = 0;
6454 my $dangling_sym = 0;
6455 foreach my $dir (@require_file_paths)
6456 {
6457 $fullfile = $dir . "/" . $file;
6458 $errdir = $dir unless $errdir;
6460 # Use different name for "error filename". Otherwise on
6461 # an error the bad file will be reported as e.g.
6462 # `../../install-sh' when using the default
6463 # config_aux_path.
6464 $errfile = $errdir . '/' . $file;
6466 if (-l $fullfile && ! -f $fullfile)
6467 {
6468 $dangling_sym = 1;
6469 last;
6470 }
6471 elsif (-f $fullfile)
6472 {
6473 $found_it = 1;
6474 maybe_push_required_file ($dir, $file, $fullfile);
6475 $save_dir = $dir;
6476 last;
6477 }
6478 }
6480 # `--force-missing' only has an effect if `--add-missing' is
6481 # specified.
6482 if ($found_it && (! $add_missing || ! $force_missing))
6483 {
6484 # Prune the path list.
6485 @require_file_paths = $save_dir;
6486 }
6487 else
6488 {
6489 # If we've already looked for it, we're done. You might
6490 # wonder why we don't do this before searching for the
6491 # file. If we do that, then something like
6492 # AC_OUTPUT(subdir/foo foo) will fail to put foo.in into
6493 # DIST_COMMON.
6494 if (! $found_it)
6495 {
6496 next if defined $require_file_found{$fullfile};
6497 $require_file_found{$fullfile} = 1;
6498 }
6500 if ($strictness >= $mystrict)
6501 {
6502 if ($dangling_sym && $add_missing)
6503 {
6504 unlink ($fullfile);
6505 }
6507 my $trailer = '';
6508 my $suppress = 0;
6510 # Only install missing files according to our desired
6511 # strictness level.
6512 my $message = "required file `$errfile' not found";
6513 if ($add_missing)
6514 {
6515 if (-f ("$libdir/$file"))
6516 {
6517 $suppress = 1;
6519 # Install the missing file. Symlink if we
6520 # can, copy if we must. Note: delete the file
6521 # first, in case it is a dangling symlink.
6522 $message = "installing `$errfile'";
6523 # Windows Perl will hang if we try to delete a
6524 # file that doesn't exist.
6525 unlink ($errfile) if -f $errfile;
6526 if ($symlink_exists && ! $copy_missing)
6527 {
6528 if (! symlink ("$libdir/$file", $errfile))
6529 {
6530 $suppress = 0;
6531 $trailer = "; error while making link: $!";
6532 }
6533 }
6534 elsif (system ('cp', "$libdir/$file", $errfile))
6535 {
6536 $suppress = 0;
6537 $trailer = "\n error while copying";
6538 }
6539 }
6541 if (! maybe_push_required_file (dirname ($errfile),
6542 $file, $errfile))
6543 {
6544 if (! $found_it)
6545 {
6546 # We have added the file but could not push it
6547 # into DIST_COMMON (probably because this is
6548 # an auxiliary file and we are not processing
6549 # the top level Makefile). This is unfortunate,
6550 # since it means we are using a file which is not
6551 # distributed!
6553 # Get Automake to be run again: on the second
6554 # run the file will be found, and pushed into
6555 # the toplevel DIST_COMMON automatically.
6556 $automake_needs_to_reprocess_all_files = 1;
6557 }
6558 }
6560 # Prune the path list.
6561 @require_file_paths = &dirname ($errfile);
6562 }
6564 # If --force-missing was specified, and we have
6565 # actually found the file, then do nothing.
6566 next
6567 if $found_it && $force_missing;
6569 # If we couldn' install the file, but it is a target in
6570 # the Makefile, don't print anything. This allows files
6571 # like README, AUTHORS, or THANKS to be generated.
6572 next
6573 if !$suppress && rule $file;
6575 msg ($suppress ? 'note' : 'error', $where, "$message$trailer");
6576 }
6577 }
6578 }
6579 }
6581 # &require_file ($WHERE, $MYSTRICT, @FILES)
6582 # -----------------------------------------
6583 sub require_file ($$@)
6584 {
6585 my ($where, $mystrict, @files) = @_;
6586 @require_file_paths = $relative_dir;
6587 require_file_internal ($where, $mystrict, @files);
6588 }
6590 # &require_file_with_macro ($COND, $MACRO, $MYSTRICT, @FILES)
6591 # -----------------------------------------------------------
6592 sub require_file_with_macro ($$$@)
6593 {
6594 my ($cond, $macro, $mystrict, @files) = @_;
6595 $macro = rvar ($macro) unless ref $macro;
6596 require_file ($macro->rdef ($cond)->location, $mystrict, @files);
6597 }
6600 # &require_conf_file ($WHERE, $MYSTRICT, @FILES)
6601 # ----------------------------------------------
6602 # Looks in configuration path, as specified by AC_CONFIG_AUX_DIR.
6603 sub require_conf_file ($$@)
6604 {
6605 my ($where, $mystrict, @files) = @_;
6606 @require_file_paths = @config_aux_path;
6607 require_file_internal ($where, $mystrict, @files);
6608 my $dir = $require_file_paths[0];
6609 @config_aux_path = @require_file_paths;
6610 # Avoid unsightly '/.'s.
6611 $config_aux_dir = '$(top_srcdir)' . ($dir eq '.' ? "" : "/$dir");
6612 }
6615 # &require_conf_file_with_macro ($COND, $MACRO, $MYSTRICT, @FILES)
6616 # ----------------------------------------------------------------
6617 sub require_conf_file_with_macro ($$$@)
6618 {
6619 my ($cond, $macro, $mystrict, @files) = @_;
6620 require_conf_file (rvar ($macro)->rdef ($cond)->location,
6621 $mystrict, @files);
6622 }
6624 ################################################################
6626 # &require_build_directory ($DIRECTORY)
6627 # ------------------------------------
6628 # Emit rules to create $DIRECTORY if needed, and return
6629 # the file that any target requiring this directory should be made
6630 # dependent upon.
6631 sub require_build_directory ($)
6632 {
6633 my $directory = shift;
6634 my $dirstamp = "$directory/\$(am__dirstamp)";
6636 # Don't emit the rule twice.
6637 if (! defined $directory_map{$directory})
6638 {
6639 $directory_map{$directory} = 1;
6641 # Set a variable for the dirstamp basename.
6642 define_pretty_variable ('am__dirstamp', TRUE, INTERNAL,
6643 '$(am__leading_dot)dirstamp');
6645 # Directory must be removed by `make distclean'.
6646 $clean_files{$dirstamp} = DIST_CLEAN;
6648 $output_rules .= ("$dirstamp:\n"
6649 . "\t\@\$(mkdir_p) $directory\n"
6650 . "\t\@: > $dirstamp\n");
6651 }
6653 return $dirstamp;
6654 }
6656 # &require_build_directory_maybe ($FILE)
6657 # --------------------------------------
6658 # If $FILE lies in a subdirectory, emit a rule to create this
6659 # directory and return the file that $FILE should be made
6660 # dependent upon. Otherwise, just return the empty string.
6661 sub require_build_directory_maybe ($)
6662 {
6663 my $file = shift;
6664 my $directory = dirname ($file);
6666 if ($directory ne '.')
6667 {
6668 return require_build_directory ($directory);
6669 }
6670 else
6671 {
6672 return '';
6673 }
6674 }
6676 ################################################################
6678 # Push a list of files onto dist_common.
6679 sub push_dist_common
6680 {
6681 prog_error "push_dist_common run after handle_dist"
6682 if $handle_dist_run;
6683 Automake::Variable::define ('DIST_COMMON', VAR_AUTOMAKE, '+', TRUE, "@_",
6684 '', INTERNAL, VAR_PRETTY);
6685 }
6688 ################################################################
6690 # generate_makefile ($MAKEFILE_AM, $MAKEFILE_IN)
6691 # ----------------------------------------------
6692 # Generate a Makefile.in given the name of the corresponding Makefile and
6693 # the name of the file output by config.status.
6694 sub generate_makefile ($$)
6695 {
6696 my ($makefile_am, $makefile_in) = @_;
6698 # Reset all the Makefile.am related variables.
6699 initialize_per_input;
6701 # AUTOMAKE_OPTIONS can contains -W flags to disable or enable
6702 # warnings for this file. So hold any warning issued before
6703 # we have processed AUTOMAKE_OPTIONS.
6704 buffer_messages ('warning');
6706 # Name of input file ("Makefile.am") and output file
6707 # ("Makefile.in"). These have no directory components.
6708 $am_file_name = basename ($makefile_am);
6709 $in_file_name = basename ($makefile_in);
6711 # $OUTPUT is encoded. If it contains a ":" then the first element
6712 # is the real output file, and all remaining elements are input
6713 # files. We don't scan or otherwise deal with these input files,
6714 # other than to mark them as dependencies. See
6715 # &scan_autoconf_files for details.
6716 my ($makefile, @inputs) = split (/:/, $output_files{$makefile_in});
6718 $relative_dir = dirname ($makefile);
6719 $am_relative_dir = dirname ($makefile_am);
6721 read_main_am_file ($makefile_am);
6722 if (handle_options)
6723 {
6724 # Process buffered warnings.
6725 flush_messages;
6726 # Fatal error. Just return, so we can continue with next file.
6727 return;
6728 }
6729 # Process buffered warnings.
6730 flush_messages;
6732 # There are a few install-related variables that you should not define.
6733 foreach my $var ('PRE_INSTALL', 'POST_INSTALL', 'NORMAL_INSTALL')
6734 {
6735 my $v = var $var;
6736 if ($v)
6737 {
6738 my $def = $v->def (TRUE);
6739 prog_error "$var not defined in condition TRUE"
6740 unless $def;
6741 reject_var $var, "`$var' should not be defined"
6742 if $def->owner != VAR_AUTOMAKE;
6743 }
6744 }
6746 # Catch some obsolete variables.
6747 msg_var ('obsolete', 'INCLUDES',
6748 "`INCLUDES' is the old name for `AM_CPPFLAGS' (or `*_CPPFLAGS')")
6749 if var ('INCLUDES');
6751 # At the toplevel directory, we might need config.guess, config.sub
6752 # or libtool scripts (ltconfig and ltmain.sh).
6753 if ($relative_dir eq '.')
6754 {
6755 # AC_CANONICAL_HOST and AC_CANONICAL_SYSTEM need config.guess and
6756 # config.sub.
6757 require_conf_file ($canonical_location, FOREIGN,
6758 'config.guess', 'config.sub')
6759 if $seen_canonical;
6760 }
6762 # Must do this after reading .am file.
6763 define_variable ('subdir', $relative_dir, INTERNAL);
6765 # If DIST_SUBDIRS is defined, make sure SUBDIRS is, so that
6766 # recursive rules are enabled.
6767 define_pretty_variable ('SUBDIRS', TRUE, INTERNAL, '')
6768 if var 'DIST_SUBDIRS' && ! var 'SUBDIRS';
6770 # Check first, because we might modify some state.
6771 check_cygnus;
6772 check_gnu_standards;
6773 check_gnits_standards;
6775 handle_configure ($makefile_am, $makefile_in, $makefile, @inputs);
6776 handle_gettext;
6777 handle_libraries;
6778 handle_ltlibraries;
6779 handle_programs;
6780 handle_scripts;
6782 # This must run first so that the ANSI2KNR definition is generated
6783 # before it is used by the _.c rules. We have to do this because
6784 # a variable which is used in a dependency must be defined before
6785 # the target, or else make won't properly see it.
6786 handle_compile;
6787 # This must be run after all the sources are scanned.
6788 handle_languages;
6790 # We have to run this after dealing with all the programs.
6791 handle_libtool;
6793 # Variables used by distdir.am and tags.am.
6794 define_pretty_variable ('SOURCES', TRUE, INTERNAL, @sources);
6795 define_pretty_variable ('DIST_SOURCES', TRUE, INTERNAL, @dist_sources);
6797 handle_multilib;
6798 handle_texinfo;
6799 handle_emacs_lisp;
6800 handle_python;
6801 handle_java;
6802 handle_man_pages;
6803 handle_data;
6804 handle_headers;
6805 handle_subdirs;
6806 handle_tags;
6807 handle_minor_options;
6808 handle_tests;
6810 # This must come after most other rules.
6811 handle_dist;
6813 handle_footer;
6814 do_check_merge_target;
6815 handle_all ($makefile);
6817 # FIXME: Gross!
6818 if (var ('lib_LTLIBRARIES') && var ('bin_PROGRAMS'))
6819 {
6820 $output_rules .= "install-binPROGRAMS: install-libLTLIBRARIES\n\n";
6821 }
6823 handle_install;
6824 handle_clean ($makefile);
6825 handle_factored_dependencies;
6827 # Comes last, because all the above procedures may have
6828 # defined or overridden variables.
6829 $output_vars .= output_variables;
6831 check_typos;
6833 if (! -d ($output_directory . '/' . $am_relative_dir))
6834 {
6835 mkdir ($output_directory . '/' . $am_relative_dir, 0755);
6836 }
6838 my ($out_file) = $output_directory . '/' . $makefile_in;
6840 # We make sure that `all:' is the first target.
6841 my $output =
6842 "$output_vars$output_all$output_header$output_rules$output_trailer";
6844 # Decide whether we must update the output file or not.
6845 # We have to update in the following situations.
6846 # * $force_generation is set.
6847 # * any of the output dependencies is younger than the output
6848 # * the contents of the output is different (this can happen
6849 # if the project has been populated with a file listed in
6850 # @common_files since the last run).
6851 # Output's dependencies are split in two sets:
6852 # * dependencies which are also configure dependencies
6853 # These do not change between each Makefile.am
6854 # * other dependencies, specific to the Makefile.am being processed
6855 # (such as the Makefile.am itself, or any Makefile fragment
6856 # it includes).
6857 my $timestamp = mtime $out_file;
6858 if (! $force_generation
6859 && $configure_deps_greatest_timestamp < $timestamp
6860 && $output_deps_greatest_timestamp < $timestamp
6861 && $output eq contents ($out_file))
6862 {
6863 verb "$out_file unchanged";
6864 # No need to update.
6865 return;
6866 }
6868 if (-e $out_file)
6869 {
6870 unlink ($out_file)
6871 or fatal "cannot remove $out_file: $!\n";
6872 }
6874 my $gm_file = new Automake::XFile "> $out_file";
6875 verb "creating $out_file";
6876 print $gm_file $output;
6877 }
6879 ################################################################
6884 ################################################################
6886 # Print usage information.
6887 sub usage ()
6888 {
6889 print "Usage: $0 [OPTION] ... [Makefile]...
6891 Generate Makefile.in for configure from Makefile.am.
6893 Operation modes:
6894 --help print this help, then exit
6895 --version print version number, then exit
6896 -v, --verbose verbosely list files processed
6897 --no-force only update Makefile.in's that are out of date
6898 -W, --warnings=CATEGORY report the warnings falling in CATEGORY
6900 Dependency tracking:
6901 -i, --ignore-deps disable dependency tracking code
6902 --include-deps enable dependency tracking code
6904 Flavors:
6905 --cygnus assume program is part of Cygnus-style tree
6906 --foreign set strictness to foreign
6907 --gnits set strictness to gnits
6908 --gnu set strictness to gnu
6910 Library files:
6911 -a, --add-missing add missing standard files to package
6912 --libdir=DIR directory storing library files
6913 -c, --copy with -a, copy missing files (default is symlink)
6914 -f, --force-missing force update of standard files
6916 ";
6917 Automake::ChannelDefs::usage;
6919 my ($last, @lcomm);
6920 $last = '';
6921 foreach my $iter (sort ((@common_files, @common_sometimes)))
6922 {
6923 push (@lcomm, $iter) unless $iter eq $last;
6924 $last = $iter;
6925 }
6927 my @four;
6928 print "\nFiles which are automatically distributed, if found:\n";
6929 format USAGE_FORMAT =
6930 @<<<<<<<<<<<<<<<< @<<<<<<<<<<<<<<<< @<<<<<<<<<<<<<<<< @<<<<<<<<<<<<<<<<
6931 $four[0], $four[1], $four[2], $four[3]
6932 .
6933 $~ = "USAGE_FORMAT";
6935 my $cols = 4;
6936 my $rows = int(@lcomm / $cols);
6937 my $rest = @lcomm % $cols;
6939 if ($rest)
6940 {
6941 $rows++;
6942 }
6943 else
6944 {
6945 $rest = $cols;
6946 }
6948 for (my $y = 0; $y < $rows; $y++)
6949 {
6950 @four = ("", "", "", "");
6951 for (my $x = 0; $x < $cols; $x++)
6952 {
6953 last if $y + 1 == $rows && $x == $rest;
6955 my $idx = (($x > $rest)
6956 ? ($rows * $rest + ($rows - 1) * ($x - $rest))
6957 : ($rows * $x));
6959 $idx += $y;
6960 $four[$x] = $lcomm[$idx];
6961 }
6962 write;
6963 }
6965 print "\nReport bugs to <bug-automake\@gnu.org>.\n";
6967 # --help always returns 0 per GNU standards.
6968 exit 0;
6969 }
6972 # &version ()
6973 # -----------
6974 # Print version information
6975 sub version ()
6976 {
6977 print <<EOF;
6978 automake (GNU $PACKAGE) $VERSION
6979 Written by Tom Tromey <tromey\@redhat.com>.
6981 Copyright 2003 Free Software Foundation, Inc.
6982 This is free software; see the source for copying conditions. There is NO
6983 warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
6984 EOF
6985 # --version always returns 0 per GNU standards.
6986 exit 0;
6987 }
6989 ################################################################
6991 # Parse command line.
6992 sub parse_arguments ()
6993 {
6994 # Start off as gnu.
6995 set_strictness ('gnu');
6997 my $cli_where = new Automake::Location;
6998 my %cli_options =
6999 (
7000 'libdir:s' => \$libdir,
7001 'gnu' => sub { set_strictness ('gnu'); },
7002 'gnits' => sub { set_strictness ('gnits'); },
7003 'cygnus' => sub { set_global_option ('cygnus', $cli_where); },
7004 'foreign' => sub { set_strictness ('foreign'); },
7005 'include-deps' => sub { unset_global_option ('no-dependencies'); },
7006 'i|ignore-deps' => sub { set_global_option ('no-dependencies',
7007 $cli_where); },
7008 'no-force' => sub { $force_generation = 0; },
7009 'f|force-missing' => \$force_missing,
7010 'o|output-dir:s' => \$output_directory,
7011 'a|add-missing' => \$add_missing,
7012 'c|copy' => \$copy_missing,
7013 'v|verbose' => sub { setup_channel 'verb', silent => 0; },
7014 'W|warnings:s' => \&parse_warnings,
7015 # These long options (--Werror and --Wno-error) for backward
7016 # compatibility. Use -Werror and -Wno-error today.
7017 'Werror' => sub { parse_warnings 'W', 'error'; },
7018 'Wno-error' => sub { parse_warnings 'W', 'no-error'; },
7019 );
7020 use Getopt::Long;
7021 Getopt::Long::config ("bundling", "pass_through");
7023 # See if --version or --help is used. We want to process these before
7024 # anything else because the GNU Coding Standards require us to
7025 # `exit 0' after processing these options, and we can't guarantee this
7026 # if we treat other options first. (Handling other options first
7027 # could produce error diagnostics, and in this condition it is
7028 # confusing if Automake does `exit 0'.)
7029 my %cli_options_1st_pass =
7030 (
7031 'version' => \&version,
7032 'help' => \&usage,
7033 # Recognize all other options (and their arguments) but do nothing.
7034 map { $_ => sub {} } (keys %cli_options)
7035 );
7036 my @ARGV_backup = @ARGV;
7037 Getopt::Long::GetOptions %cli_options_1st_pass
7038 or exit 1;
7039 @ARGV = @ARGV_backup;
7041 # Now *really* process the options. This time we know
7042 # that --help and --version are not present.
7043 Getopt::Long::GetOptions %cli_options
7044 or exit 1;
7046 if (defined $output_directory)
7047 {
7048 msg 'obsolete', "`--output-dir' is deprecated\n";
7049 }
7050 else
7051 {
7052 # In the next release we'll remove this entirely.
7053 $output_directory = '.';
7054 }
7056 foreach my $arg (@ARGV)
7057 {
7058 if ($arg =~ /^-./)
7059 {
7060 fatal ("unrecognized option `$arg'\n"
7061 . "Try `$0 --help' for more information.");
7062 }
7064 # Handle $local:$input syntax.
7065 my ($local, @rest) = split (/:/, $arg);
7066 @rest = ("$local.in",) unless @rest;
7067 my $input = locate_am @rest;
7068 if ($input)
7069 {
7070 push @input_files, $input;
7071 $output_files{$input} = join (':', ($local, @rest));
7072 }
7073 else
7074 {
7075 error "no Automake input file found in `$arg'";
7076 }
7077 }
7078 }
7080 ################################################################
7082 # Parse the WARNINGS environment variable.
7083 parse_WARNINGS;
7085 # Parse command line.
7086 parse_arguments;
7088 $configure_ac = require_configure_ac;
7090 # Do configure.ac scan only once.
7091 scan_autoconf_files;
7093 fatal "no `Makefile.am' found or specified\n"
7094 if ! @input_files;
7096 my $automake_has_run = 0;
7098 do
7099 {
7100 if ($automake_has_run)
7101 {
7102 verb 'processing Makefiles another time to fix them up.';
7103 prog_error 'running more than two times should never be needed.'
7104 if $automake_has_run >= 2;
7105 }
7106 $automake_needs_to_reprocess_all_files = 0;
7108 # Now do all the work on each file.
7109 foreach my $file (@input_files)
7110 {
7111 ($am_file = $file) =~ s/\.in$//;
7112 if (! -f ($am_file . '.am'))
7113 {
7114 error "`$am_file.am' does not exist";
7115 }
7116 else
7117 {
7118 # Any warning setting now local to this Makefile.am.
7119 dup_channel_setup;
7121 generate_makefile ($am_file . '.am', $file);
7123 # Back out any warning setting.
7124 drop_channel_setup;
7125 }
7126 }
7127 ++$automake_has_run;
7128 }
7129 while ($automake_needs_to_reprocess_all_files);
7131 exit $exit_code;
7134 ### Setup "GNU" style for perl-mode and cperl-mode.
7135 ## Local Variables:
7136 ## perl-indent-level: 2
7137 ## perl-continued-statement-offset: 2
7138 ## perl-continued-brace-offset: 0
7139 ## perl-brace-offset: 0
7140 ## perl-brace-imaginary-offset: 0
7141 ## perl-label-offset: -2
7142 ## cperl-indent-level: 2
7143 ## cperl-brace-offset: 0
7144 ## cperl-continued-brace-offset: 0
7145 ## cperl-label-offset: -2
7146 ## cperl-extra-newline-before-brace: t
7147 ## cperl-merge-trailing-else: nil
7148 ## cperl-continued-statement-offset: 2
7149 ## End: