| blob | eb48ee92f5c8f7fd4e9bbfd0d78e48743400dce5 |
1 #!@PERL@ -w
2 # -*- perl -*-
3 # @configure_input@
5 eval 'case $# in 0) exec @PERL@ -S "$0";; *) exec @PERL@ -S "$0" "$@";; esac'
6 if 0;
8 # automake - create Makefile.in from Makefile.am
9 # Copyright (C) 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002,
10 # 2003, 2004 Free Software Foundation, Inc.
12 # This program is free software; you can redistribute it and/or modify
13 # it under the terms of the GNU General Public License as published by
14 # the Free Software Foundation; either version 2, or (at your option)
15 # any later version.
17 # This program is distributed in the hope that it will be useful,
18 # but WITHOUT ANY WARRANTY; without even the implied warranty of
19 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
20 # GNU General Public License for more details.
22 # You should have received a copy of the GNU General Public License
23 # along with this program; if not, write to the Free Software
24 # Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
25 # 02111-1307, USA.
27 # Originally written by David Mackenzie <djm@gnu.ai.mit.edu>.
28 # Perl reimplementation by Tom Tromey <tromey@redhat.com>, and
29 # Alexandre Duret-Lutz <adl@gnu.org>.
31 package Language;
33 BEGIN
34 {
35 my $perllibdir = $ENV{'perllibdir'} || '@datadir@/@PACKAGE@-@APIVERSION@';
36 unshift @INC, (split '@PATH_SEPARATOR@', $perllibdir);
38 # Override SHELL. This is required on DJGPP so that system() uses
39 # bash, not COMMAND.COM which doesn't quote arguments properly.
40 # Other systems aren't expected to use $SHELL when Automake
41 # runs, but it should be safe to drop the `if DJGPP' guard if
42 # it turns up other systems need the same thing. After all,
43 # if SHELL is used, ./configure's SHELL is always better than
44 # the user's SHELL (which may be something like tcsh).
45 $ENV{'SHELL'} = '@SHELL@' if exists $ENV{'DJGPP'};
46 }
48 use Automake::Struct;
49 struct (# Short name of the language (c, f77...).
50 'name' => "\$",
51 # Nice name of the language (C, Fortran 77...).
52 'Name' => "\$",
54 # List of configure variables which must be defined.
55 'config_vars' => '@',
57 'ansi' => "\$",
58 # `pure' is `1' or `'. A `pure' language is one where, if
59 # all the files in a directory are of that language, then we
60 # do not require the C compiler or any code to call it.
61 'pure' => "\$",
63 'autodep' => "\$",
65 # Name of the compiling variable (COMPILE).
66 'compiler' => "\$",
67 # Content of the compiling variable.
68 'compile' => "\$",
69 # Flag to require compilation without linking (-c).
70 'compile_flag' => "\$",
71 'extensions' => '@',
72 # A subroutine to compute a list of possible extensions of
73 # the product given the input extensions.
74 # (defaults to a subroutine which returns ('.$(OBJEXT)', '.lo'))
75 'output_extensions' => "\$",
76 # A list of flag variables used in 'compile'.
77 # (defaults to [])
78 'flags' => "@",
80 # Any tag to pass to libtool while compiling.
81 'libtool_tag' => "\$",
83 # The file to use when generating rules for this language.
84 # The default is 'depend2'.
85 'rule_file' => "\$",
87 # Name of the linking variable (LINK).
88 'linker' => "\$",
89 # Content of the linking variable.
90 'link' => "\$",
92 # Name of the linker variable (LD).
93 'lder' => "\$",
94 # Content of the linker variable ($(CC)).
95 'ld' => "\$",
97 # Flag to specify the output file (-o).
98 'output_flag' => "\$",
99 '_finish' => "\$",
101 # This is a subroutine which is called whenever we finally
102 # determine the context in which a source file will be
103 # compiled.
104 '_target_hook' => "\$",
106 # If TRUE, nodist_ sources will be compiled using specific rules
107 # (i.e. not inference rules). The default is FALSE.
108 'nodist_specific' => "\$");
111 sub finish ($)
112 {
113 my ($self) = @_;
114 if (defined $self->_finish)
115 {
116 &{$self->_finish} ();
117 }
118 }
120 sub target_hook ($$$$%)
121 {
122 my ($self) = @_;
123 if (defined $self->_target_hook)
124 {
125 &{$self->_target_hook} (@_);
126 }
127 }
129 package Automake;
131 use strict;
132 use Automake::Config;
133 use Automake::General;
134 use Automake::XFile;
135 use Automake::Channels;
136 use Automake::ChannelDefs;
137 use Automake::Configure_ac;
138 use Automake::FileUtils;
139 use Automake::Location;
140 use Automake::Condition qw/TRUE FALSE/;
141 use Automake::DisjConditions;
142 use Automake::Options;
143 use Automake::Version;
144 use Automake::Variable;
145 use Automake::VarDef;
146 use Automake::Rule;
147 use Automake::RuleDef;
148 use Automake::Wrap 'makefile_wrap';
149 use File::Basename;
150 use Carp;
152 ## ----------- ##
153 ## Constants. ##
154 ## ----------- ##
156 # Some regular expressions. One reason to put them here is that it
157 # makes indentation work better in Emacs.
159 # Writing singled-quoted-$-terminated regexes is a pain because
160 # perl-mode thinks of $' as the ${'} variable (instead of a $ followed
161 # by a closing quote. Letting perl-mode think the quote is not closed
162 # leads to all sort of misindentations. On the other hand, defining
163 # regexes as double-quoted strings is far less readable. So usually
164 # we will write:
165 #
166 # $REGEX = '^regex_value' . "\$";
168 my $IGNORE_PATTERN = '^\s*##([^#\n].*)?\n';
169 my $WHITE_PATTERN = '^\s*' . "\$";
170 my $COMMENT_PATTERN = '^#';
171 my $TARGET_PATTERN='[$a-zA-Z_.@%][-.a-zA-Z0-9_(){}/$+@%]*';
172 # A rule has three parts: a list of targets, a list of dependencies,
173 # and optionally actions.
174 my $RULE_PATTERN =
175 "^($TARGET_PATTERN(?:(?:\\\\\n|\\s)+$TARGET_PATTERN)*) *:([^=].*|)\$";
177 # Only recognize leading spaces, not leading tabs. If we recognize
178 # leading tabs here then we need to make the reader smarter, because
179 # otherwise it will think rules like `foo=bar; \' are errors.
180 my $ASSIGNMENT_PATTERN = '^ *([^ \t=:+]*)\s*([:+]?)=\s*(.*)' . "\$";
181 # This pattern recognizes a Gnits version id and sets $1 if the
182 # release is an alpha release. We also allow a suffix which can be
183 # used to extend the version number with a "fork" identifier.
184 my $GNITS_VERSION_PATTERN = '\d+\.\d+([a-z]|\.\d+)?(-[A-Za-z0-9]+)?';
186 my $IF_PATTERN = '^if\s+(!?)\s*([A-Za-z][A-Za-z0-9_]*)\s*(?:#.*)?' . "\$";
187 my $ELSE_PATTERN =
188 '^else(?:\s+(!?)\s*([A-Za-z][A-Za-z0-9_]*))?\s*(?:#.*)?' . "\$";
189 my $ENDIF_PATTERN =
190 '^endif(?:\s+(!?)\s*([A-Za-z][A-Za-z0-9_]*))?\s*(?:#.*)?' . "\$";
191 my $PATH_PATTERN = '(\w|[+/.-])+';
192 # This will pass through anything not of the prescribed form.
193 my $INCLUDE_PATTERN = ('^include\s+'
194 . '((\$\(top_srcdir\)/' . $PATH_PATTERN . ')'
195 . '|(\$\(srcdir\)/' . $PATH_PATTERN . ')'
196 . '|([^/\$]' . $PATH_PATTERN . '))\s*(#.*)?' . "\$");
198 # Match `-d' as a command-line argument in a string.
199 my $DASH_D_PATTERN = "(^|\\s)-d(\\s|\$)";
200 # Directories installed during 'install-exec' phase.
201 my $EXEC_DIR_PATTERN =
202 '^(?:bin|sbin|libexec|sysconf|localstate|lib|pkglib|.*exec.*)' . "\$";
204 # Values for AC_CANONICAL_*
205 use constant AC_CANONICAL_BUILD => 1;
206 use constant AC_CANONICAL_HOST => 2;
207 use constant AC_CANONICAL_TARGET => 3;
209 # Values indicating when something should be cleaned.
210 use constant MOSTLY_CLEAN => 0;
211 use constant CLEAN => 1;
212 use constant DIST_CLEAN => 2;
213 use constant MAINTAINER_CLEAN => 3;
215 # Libtool files.
216 my @libtool_files = qw(ltmain.sh config.guess config.sub);
217 # ltconfig appears here for compatibility with old versions of libtool.
218 my @libtool_sometimes = qw(ltconfig ltcf-c.sh ltcf-cxx.sh ltcf-gcj.sh);
220 # Commonly found files we look for and automatically include in
221 # DISTFILES.
222 my @common_files =
223 (qw(ABOUT-GNU ABOUT-NLS AUTHORS BACKLOG COPYING COPYING.DOC COPYING.LIB
224 COPYING.LESSER ChangeLog INSTALL NEWS README THANKS TODO
225 ansi2knr.1 ansi2knr.c compile config.guess config.rpath config.sub
226 depcomp elisp-comp install-sh libversion.in mdate-sh missing
227 mkinstalldirs py-compile texinfo.tex ylwrap),
228 @libtool_files, @libtool_sometimes);
230 # Commonly used files we auto-include, but only sometimes. This list
231 # is used for the --help output only.
232 my @common_sometimes =
233 qw(aclocal.m4 acconfig.h config.h.top config.h.bot configure
234 configure.ac configure.in stamp-vti);
236 # Standard directories from the GNU Coding Standards, and additional
237 # pkg* directories from Automake. Stored in a hash for fast member check.
238 my %standard_prefix =
239 map { $_ => 1 } (qw(bin data exec include info lib libexec lisp
240 localstate man man1 man2 man3 man4 man5 man6
241 man7 man8 man9 oldinclude pkgdatadir
242 pkgincludedir pkglibdir sbin sharedstate
243 sysconf));
245 # Copyright on generated Makefile.ins.
246 my $gen_copyright = "\
247 # Copyright (C) 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002,
248 # 2003, 2004 Free Software Foundation, Inc.
249 # This Makefile.in is free software; the Free Software Foundation
250 # gives unlimited permission to copy and/or distribute it,
251 # with or without modifications, as long as this notice is preserved.
253 # This program is distributed in the hope that it will be useful,
254 # but WITHOUT ANY WARRANTY, to the extent permitted by law; without
255 # even the implied warranty of MERCHANTABILITY or FITNESS FOR A
256 # PARTICULAR PURPOSE.
257 ";
259 # These constants are returned by lang_*_rewrite functions.
260 # LANG_SUBDIR means that the resulting object file should be in a
261 # subdir if the source file is. In this case the file name cannot
262 # have `..' components.
263 use constant LANG_IGNORE => 0;
264 use constant LANG_PROCESS => 1;
265 use constant LANG_SUBDIR => 2;
267 # These are used when keeping track of whether an object can be built
268 # by two different paths.
269 use constant COMPILE_LIBTOOL => 1;
270 use constant COMPILE_ORDINARY => 2;
272 # We can't always associate a location to a variable or a rule,
273 # when its defined by Automake. We use INTERNAL in this case.
274 use constant INTERNAL => new Automake::Location;
275 \f
277 ## ---------------------------------- ##
278 ## Variables related to the options. ##
279 ## ---------------------------------- ##
281 # TRUE if we should always generate Makefile.in.
282 my $force_generation = 1;
284 # From the Perl manual.
285 my $symlink_exists = (eval 'symlink ("", "");', $@ eq '');
287 # TRUE if missing standard files should be installed.
288 my $add_missing = 0;
290 # TRUE if we should copy missing files; otherwise symlink if possible.
291 my $copy_missing = 0;
293 # TRUE if we should always update files that we know about.
294 my $force_missing = 0;
297 ## ---------------------------------------- ##
298 ## Variables filled during files scanning. ##
299 ## ---------------------------------------- ##
301 # Name of the configure.ac file.
302 my $configure_ac;
304 # Files found by scanning configure.ac for LIBOBJS.
305 my %libsources = ();
307 # Names used in AC_CONFIG_HEADER call.
308 my @config_headers = ();
310 # Names used in AC_CONFIG_LINKS call.
311 my @config_links = ();
313 # Directory where output files go. Actually, output files are
314 # relative to this directory.
315 my $output_directory;
317 # List of Makefile.am's to process, and their corresponding outputs.
318 my @input_files = ();
319 my %output_files = ();
321 # Complete list of Makefile.am's that exist.
322 my @configure_input_files = ();
324 # List of files in AC_CONFIG_FILES/AC_OUTPUT without Makefile.am's,
325 # and their outputs.
326 my @other_input_files = ();
327 # Where each AC_CONFIG_FILES/AC_OUTPUT/AC_CONFIG_LINK/AC_CONFIG_HEADER appears.
328 # The keys are the files created by these macros.
329 my %ac_config_files_location = ();
331 # Directory to search for configure-required files. This
332 # will be computed by &locate_aux_dir and can be set using
333 # AC_CONFIG_AUX_DIR in configure.ac.
334 # $CONFIG_AUX_DIR is the `raw' directory, valid only in the source-tree.
335 my $config_aux_dir = '';
336 my $config_aux_dir_set_in_configure_ac = 0;
337 # $AM_CONFIG_AUX_DIR is prefixed with $(top_srcdir), so it can be used
338 # in Makefiles.
339 my $am_config_aux_dir = '';
341 # Whether AM_GNU_GETTEXT has been seen in configure.ac.
342 my $seen_gettext = 0;
343 # Whether AM_GNU_GETTEXT([external]) is used.
344 my $seen_gettext_external = 0;
345 # Where AM_GNU_GETTEXT appears.
346 my $ac_gettext_location;
348 # Lists of tags supported by Libtool.
349 my %libtool_tags = ();
350 # 1 if Libtool uses LT_SUPPORTED_TAG. If it does, then it also
351 # use AC_REQUIRE_AUX_FILE.
352 my $libtool_new_api = 0;
354 # Most important AC_CANONICAL_* macro seen so far.
355 my $seen_canonical = 0;
356 # Location of that macro.
357 my $canonical_location;
359 # Where AM_MAINTAINER_MODE appears.
360 my $seen_maint_mode;
362 # Actual version we've seen.
363 my $package_version = '';
365 # Where version is defined.
366 my $package_version_location;
368 # TRUE if we've seen AC_ENABLE_MULTILIB.
369 my $seen_multilib = 0;
371 # TRUE if we've seen AM_PROG_CC_C_O
372 my $seen_cc_c_o = 0;
374 # Location of AC_REQUIRE_AUX_FILE calls, indexed by their argument.
375 my %required_aux_file = ();
377 # Where AM_INIT_AUTOMAKE is called;
378 my $seen_init_automake = 0;
380 # TRUE if we've seen AM_AUTOMAKE_VERSION.
381 my $seen_automake_version = 0;
383 # Hash table of discovered configure substitutions. Keys are names,
384 # values are `FILE:LINE' strings which are used by error message
385 # generation.
386 my %configure_vars = ();
388 # Files included by $configure_ac.
389 my @configure_deps = ();
391 # Greatest timestamp of configure's dependencies.
392 my $configure_deps_greatest_timestamp = 0;
394 # Hash table of AM_CONDITIONAL variables seen in configure.
395 my %configure_cond = ();
397 # This maps extensions onto language names.
398 my %extension_map = ();
400 # List of the DIST_COMMON files we discovered while reading
401 # configure.in
402 my $configure_dist_common = '';
404 # This maps languages names onto objects.
405 my %languages = ();
407 # List of targets we must always output.
408 # FIXME: Complete, and remove falsely required targets.
409 my %required_targets =
410 (
411 'all' => 1,
412 'dvi' => 1,
413 'pdf' => 1,
414 'ps' => 1,
415 'info' => 1,
416 'install-info' => 1,
417 'install' => 1,
418 'install-data' => 1,
419 'install-exec' => 1,
420 'uninstall' => 1,
422 # FIXME: Not required, temporary hacks.
423 # Well, actually they are sort of required: the -recursive
424 # targets will run them anyway...
425 'dvi-am' => 1,
426 'pdf-am' => 1,
427 'ps-am' => 1,
428 'info-am' => 1,
429 'install-data-am' => 1,
430 'install-exec-am' => 1,
431 'installcheck-am' => 1,
432 'uninstall-am' => 1,
434 'install-man' => 1,
435 );
437 # Set to 1 if this run will create the Makefile.in that distribute
438 # the files in config_aux_dir.
439 my $automake_will_process_aux_dir = 0;
441 # The name of the Makefile currently being processed.
442 my $am_file = 'BUG';
443 \f
445 ################################################################
447 ## ------------------------------------------ ##
448 ## Variables reset by &initialize_per_input. ##
449 ## ------------------------------------------ ##
451 # Basename and relative dir of the input file.
452 my $am_file_name;
453 my $am_relative_dir;
455 # Same but wrt Makefile.in.
456 my $in_file_name;
457 my $relative_dir;
459 # Greatest timestamp of the output's dependencies (excluding
460 # configure's dependencies).
461 my $output_deps_greatest_timestamp;
463 # These two variables are used when generating each Makefile.in.
464 # They hold the Makefile.in until it is ready to be printed.
465 my $output_rules;
466 my $output_vars;
467 my $output_trailer;
468 my $output_all;
469 my $output_header;
471 # This is the conditional stack, updated on if/else/endif, and
472 # used to build Condition objects.
473 my @cond_stack;
475 # This holds the set of included files.
476 my @include_stack;
478 # This holds a list of directories which we must create at `dist'
479 # time. This is used in some strange scenarios involving weird
480 # AC_OUTPUT commands.
481 my %dist_dirs;
483 # List of dependencies for the obvious targets.
484 my @all;
485 my @check;
486 my @check_tests;
488 # Keys in this hash table are files to delete. The associated
489 # value tells when this should happen (MOSTLY_CLEAN, DIST_CLEAN, etc.)
490 my %clean_files;
492 # Keys in this hash table are object files or other files in
493 # subdirectories which need to be removed. This only holds files
494 # which are created by compilations. The value in the hash indicates
495 # when the file should be removed.
496 my %compile_clean_files;
498 # Keys in this hash table are directories where we expect to build a
499 # libtool object. We use this information to decide what directories
500 # to delete.
501 my %libtool_clean_directories;
503 # Value of `$(SOURCES)', used by tags.am.
504 my @sources;
505 # Sources which go in the distribution.
506 my @dist_sources;
508 # This hash maps object file names onto their corresponding source
509 # file names. This is used to ensure that each object is created
510 # by a single source file.
511 my %object_map;
513 # This hash maps object file names onto an integer value representing
514 # whether this object has been built via ordinary compilation or
515 # libtool compilation (the COMPILE_* constants).
516 my %object_compilation_map;
519 # This keeps track of the directories for which we've already
520 # created dirstamp code.
521 my %directory_map;
523 # All .P files.
524 my %dep_files;
526 # This is a list of all targets to run during "make dist".
527 my @dist_targets;
529 # Keys in this hash are the basenames of files which must depend on
530 # ansi2knr. Values are either the empty string, or the directory in
531 # which the ANSI source file appears; the directory must have a
532 # trailing `/'.
533 my %de_ansi_files;
535 # This is the name of the redirect `all' target to use.
536 my $all_target;
538 # This keeps track of which extensions we've seen (that we care
539 # about).
540 my %extension_seen;
542 # This is random scratch space for the language finish functions.
543 # Don't randomly overwrite it; examine other uses of keys first.
544 my %language_scratch;
546 # We keep track of which objects need special (per-executable)
547 # handling on a per-language basis.
548 my %lang_specific_files;
550 # This is set when `handle_dist' has finished. Once this happens,
551 # we should no longer push on dist_common.
552 my $handle_dist_run;
554 # Used to store a set of linkers needed to generate the sources currently
555 # under consideration.
556 my %linkers_used;
558 # True if we need `LINK' defined. This is a hack.
559 my $need_link;
561 # Was get_object_extension run?
562 # FIXME: This is a hack. a better switch should be found.
563 my $get_object_extension_was_run;
565 # Record each file processed by make_paragraphs.
566 my %transformed_files;
568 # Cache each file processed by make_paragraphs.
569 # (This is different from %transformed_files because
570 # %transformed_files is reset for each file while %am_file_cache
571 # it global to the run.)
572 my %am_file_cache;
574 ################################################################
576 # var_SUFFIXES_trigger ($TYPE, $VALUE)
577 # ------------------------------------
578 # This is called by Automake::Variable::define() when SUFFIXES
579 # is defined ($TYPE eq '') or appended ($TYPE eq '+').
580 # The work here needs to be performed as a side-effect of the
581 # macro_define() call because SUFFIXES definitions impact
582 # on $KNOWN_EXTENSIONS_PATTERN which is used used when parsing
583 # the input am file.
584 sub var_SUFFIXES_trigger ($$)
585 {
586 my ($type, $value) = @_;
587 accept_extensions (split (' ', $value));
588 }
589 Automake::Variable::hook ('SUFFIXES', \&var_SUFFIXES_trigger);
591 ################################################################
593 ## --------------------------------- ##
594 ## Forward subroutine declarations. ##
595 ## --------------------------------- ##
596 sub register_language (%);
597 sub file_contents_internal ($$$%);
598 sub define_files_variable ($\@$$);
601 # &initialize_per_input ()
602 # ------------------------
603 # (Re)-Initialize per-Makefile.am variables.
604 sub initialize_per_input ()
605 {
606 reset_local_duplicates ();
608 $am_file_name = '';
609 $am_relative_dir = '';
611 $in_file_name = '';
612 $relative_dir = '';
614 $output_deps_greatest_timestamp = 0;
616 $output_rules = '';
617 $output_vars = '';
618 $output_trailer = '';
619 $output_all = '';
620 $output_header = '';
622 Automake::Options::reset;
623 Automake::Variable::reset;
624 Automake::Rule::reset;
626 @cond_stack = ();
628 @include_stack = ();
630 %dist_dirs = ();
632 @all = ();
633 @check = ();
634 @check_tests = ();
636 %clean_files = ();
638 @sources = ();
639 @dist_sources = ();
641 %object_map = ();
642 %object_compilation_map = ();
644 %directory_map = ();
646 %dep_files = ();
648 @dist_targets = ();
650 %de_ansi_files = ();
652 $all_target = '';
654 %extension_seen = ();
656 %language_scratch = ();
658 %lang_specific_files = ();
660 $handle_dist_run = 0;
662 $need_link = 0;
664 $get_object_extension_was_run = 0;
666 %compile_clean_files = ();
668 # We always include `.'. This isn't strictly correct.
669 %libtool_clean_directories = ('.' => 1);
671 %transformed_files = ();
672 }
675 ################################################################
677 # Initialize our list of languages that are internally supported.
679 # C.
680 register_language ('name' => 'c',
681 'Name' => 'C',
682 'config_vars' => ['CC'],
683 'ansi' => 1,
684 'autodep' => '',
685 'flags' => ['CFLAGS', 'CPPFLAGS'],
686 'compiler' => 'COMPILE',
687 'compile' => '$(CC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS) $(CPPFLAGS) $(AM_CFLAGS) $(CFLAGS)',
688 'lder' => 'CCLD',
689 'ld' => '$(CC)',
690 'linker' => 'LINK',
691 'link' => '$(CCLD) $(AM_CFLAGS) $(CFLAGS) $(AM_LDFLAGS) $(LDFLAGS) -o $@',
692 'compile_flag' => '-c',
693 'libtool_tag' => 'CC',
694 'extensions' => ['.c'],
695 '_finish' => \&lang_c_finish);
697 # C++.
698 register_language ('name' => 'cxx',
699 'Name' => 'C++',
700 'config_vars' => ['CXX'],
701 'linker' => 'CXXLINK',
702 'link' => '$(CXXLD) $(AM_CXXFLAGS) $(CXXFLAGS) $(AM_LDFLAGS) $(LDFLAGS) -o $@',
703 'autodep' => 'CXX',
704 'flags' => ['CXXFLAGS', 'CPPFLAGS'],
705 'compile' => '$(CXX) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS) $(CPPFLAGS) $(AM_CXXFLAGS) $(CXXFLAGS)',
706 'compiler' => 'CXXCOMPILE',
707 'compile_flag' => '-c',
708 'output_flag' => '-o',
709 'libtool_tag' => 'CXX',
710 'lder' => 'CXXLD',
711 'ld' => '$(CXX)',
712 'pure' => 1,
713 'extensions' => ['.c++', '.cc', '.cpp', '.cxx', '.C']);
715 # Objective C.
716 register_language ('name' => 'objc',
717 'Name' => 'Objective C',
718 'config_vars' => ['OBJC'],
719 'linker' => 'OBJCLINK',,
720 'link' => '$(OBJCLD) $(AM_OBJCFLAGS) $(OBJCFLAGS) $(AM_LDFLAGS) $(LDFLAGS) -o $@',
721 'autodep' => 'OBJC',
722 'flags' => ['OBJCFLAGS', 'CPPFLAGS'],
723 'compile' => '$(OBJC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS) $(CPPFLAGS) $(AM_OBJCFLAGS) $(OBJCFLAGS)',
724 'compiler' => 'OBJCCOMPILE',
725 'compile_flag' => '-c',
726 'output_flag' => '-o',
727 'lder' => 'OBJCLD',
728 'ld' => '$(OBJC)',
729 'pure' => 1,
730 'extensions' => ['.m']);
732 # Headers.
733 register_language ('name' => 'header',
734 'Name' => 'Header',
735 'extensions' => ['.h', '.H', '.hxx', '.h++', '.hh',
736 '.hpp', '.inc'],
737 # No output.
738 'output_extensions' => sub { return () },
739 # Nothing to do.
740 '_finish' => sub { });
742 # Yacc (C & C++).
743 register_language ('name' => 'yacc',
744 'Name' => 'Yacc',
745 'config_vars' => ['YACC'],
746 'flags' => ['YFLAGS'],
747 'compile' => '$(YACC) $(YFLAGS) $(AM_YFLAGS)',
748 'compiler' => 'YACCCOMPILE',
749 'extensions' => ['.y'],
750 'output_extensions' => sub { (my $ext = $_[0]) =~ tr/y/c/;
751 return ($ext,) },
752 'rule_file' => 'yacc',
753 '_finish' => \&lang_yacc_finish,
754 '_target_hook' => \&lang_yacc_target_hook,
755 'nodist_specific' => 1);
756 register_language ('name' => 'yaccxx',
757 'Name' => 'Yacc (C++)',
758 'config_vars' => ['YACC'],
759 'rule_file' => 'yacc',
760 'flags' => ['YFLAGS'],
761 'compiler' => 'YACCCOMPILE',
762 'compile' => '$(YACC) $(YFLAGS) $(AM_YFLAGS)',
763 'extensions' => ['.y++', '.yy', '.yxx', '.ypp'],
764 'output_extensions' => sub { (my $ext = $_[0]) =~ tr/y/c/;
765 return ($ext,) },
766 '_finish' => \&lang_yacc_finish,
767 '_target_hook' => \&lang_yacc_target_hook,
768 'nodist_specific' => 1);
770 # Lex (C & C++).
771 register_language ('name' => 'lex',
772 'Name' => 'Lex',
773 'config_vars' => ['LEX'],
774 'rule_file' => 'lex',
775 'flags' => ['LFLAGS'],
776 'compile' => '$(LEX) $(LFLAGS) $(AM_LFLAGS)',
777 'compiler' => 'LEXCOMPILE',
778 'extensions' => ['.l'],
779 'output_extensions' => sub { (my $ext = $_[0]) =~ tr/l/c/;
780 return ($ext,) },
781 '_finish' => \&lang_lex_finish,
782 '_target_hook' => \&lang_lex_target_hook,
783 'nodist_specific' => 1);
784 register_language ('name' => 'lexxx',
785 'Name' => 'Lex (C++)',
786 'config_vars' => ['LEX'],
787 'rule_file' => 'lex',
788 'flags' => ['LFLAGS'],
789 'compile' => '$(LEX) $(LFLAGS) $(AM_LFLAGS)',
790 'compiler' => 'LEXCOMPILE',
791 'extensions' => ['.l++', '.ll', '.lxx', '.lpp'],
792 'output_extensions' => sub { (my $ext = $_[0]) =~ tr/l/c/;
793 return ($ext,) },
794 '_finish' => \&lang_lex_finish,
795 '_target_hook' => \&lang_lex_target_hook,
796 'nodist_specific' => 1);
798 # Assembler.
799 register_language ('name' => 'asm',
800 'Name' => 'Assembler',
801 'config_vars' => ['CCAS', 'CCASFLAGS'],
803 'flags' => ['CCASFLAGS'],
804 # Users can set AM_CCASFLAGS to include DEFS, INCLUDES,
805 # or anything else required. They can also set CCAS.
806 'compile' => '$(CCAS) $(AM_CCASFLAGS) $(CCASFLAGS)',
807 'compiler' => 'CCASCOMPILE',
808 'compile_flag' => '-c',
809 'extensions' => ['.s'],
811 # With assembly we still use the C linker.
812 '_finish' => \&lang_c_finish);
814 # Preprocessed Assembler.
815 register_language ('name' => 'cppasm',
816 'Name' => 'Preprocessed Assembler',
817 'config_vars' => ['CCAS', 'CCASFLAGS'],
819 'autodep' => 'CCAS',
820 'flags' => ['CCASFLAGS', 'CPPFLAGS'],
821 # Users can set AM_ASFLAGS to include DEFS, INCLUDES,
822 # or anything else required. They can also set CCAS.
823 'compile' => '$(CCAS) $(AM_CPPFLAGS) $(CPPFLAGS) $(AM_CCASFLAGS) $(CCASFLAGS)',
824 'compiler' => 'CPPASCOMPILE',
825 'compile_flag' => '-c',
826 'extensions' => ['.S'],
828 # With assembly we still use the C linker.
829 '_finish' => \&lang_c_finish);
831 # Fortran 77
832 register_language ('name' => 'f77',
833 'Name' => 'Fortran 77',
834 'linker' => 'F77LINK',
835 'link' => '$(F77LD) $(AM_FFLAGS) $(FFLAGS) $(AM_LDFLAGS) $(LDFLAGS) -o $@',
836 'flags' => ['FFLAGS'],
837 'compile' => '$(F77) $(AM_FFLAGS) $(FFLAGS)',
838 'compiler' => 'F77COMPILE',
839 'compile_flag' => '-c',
840 'output_flag' => '-o',
841 'libtool_tag' => 'F77',
842 'lder' => 'F77LD',
843 'ld' => '$(F77)',
844 'pure' => 1,
845 'extensions' => ['.f', '.for']);
847 # Fortran
848 register_language ('name' => 'fc',
849 'Name' => 'Fortran',
850 'linker' => 'FCLINK',
851 'link' => '$(FCLD) $(AM_FCFLAGS) $(FCFLAGS) $(AM_LDFLAGS) $(LDFLAGS) -o $@',
852 'flags' => ['FCFLAGS'],
853 'compile' => '$(FC) $(AM_FCFLAGS) $(FCFLAGS)',
854 'compiler' => 'FCCOMPILE',
855 'compile_flag' => '-c',
856 'output_flag' => '-o',
857 'lder' => 'FCLD',
858 'ld' => '$(FC)',
859 'pure' => 1,
860 'extensions' => ['.f90', '.f95']);
862 # Preprocessed Fortran
863 register_language ('name' => 'ppfc',
864 'Name' => 'Preprocessed Fortran',
865 'config_vars' => ['FC'],
866 'linker' => 'FCLINK',
867 'link' => '$(FCLD) $(AM_FCFLAGS) $(FCFLAGS) $(AM_LDFLAGS) $(LDFLAGS) -o $@',
868 'lder' => 'FCLD',
869 'ld' => '$(FC)',
870 'flags' => ['FCFLAGS', 'CPPFLAGS'],
871 'compiler' => 'PPFCCOMPILE',
872 'compile' => '$(FC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS) $(CPPFLAGS) $(AM_FCFLAGS) $(FCFLAGS)',
873 'compile_flag' => '-c',
874 'output_flag' => '-o',
875 'libtool_tag' => 'FC',
876 'pure' => 1,
877 'extensions' => ['.F90','.F95']);
879 # Preprocessed Fortran 77
880 #
881 # The current support for preprocessing Fortran 77 just involves
882 # passing `$(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS)
883 # $(CPPFLAGS)' as additional flags to the Fortran 77 compiler, since
884 # this is how GNU Make does it; see the `GNU Make Manual, Edition 0.51
885 # for `make' Version 3.76 Beta' (specifically, from info file
886 # `(make)Catalogue of Rules').
887 #
888 # A better approach would be to write an Autoconf test
889 # (i.e. AC_PROG_FPP) for a Fortran 77 preprocessor, because not all
890 # Fortran 77 compilers know how to do preprocessing. The Autoconf
891 # macro AC_PROG_FPP should test the Fortran 77 compiler first for
892 # preprocessing capabilities, and then fall back on cpp (if cpp were
893 # available).
894 register_language ('name' => 'ppf77',
895 'Name' => 'Preprocessed Fortran 77',
896 'config_vars' => ['F77'],
897 'linker' => 'F77LINK',
898 'link' => '$(F77LD) $(AM_FFLAGS) $(FFLAGS) $(AM_LDFLAGS) $(LDFLAGS) -o $@',
899 'lder' => 'F77LD',
900 'ld' => '$(F77)',
901 'flags' => ['FFLAGS', 'CPPFLAGS'],
902 'compiler' => 'PPF77COMPILE',
903 'compile' => '$(F77) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS) $(CPPFLAGS) $(AM_FFLAGS) $(FFLAGS)',
904 'compile_flag' => '-c',
905 'output_flag' => '-o',
906 'libtool_tag' => 'F77',
907 'pure' => 1,
908 'extensions' => ['.F']);
910 # Ratfor.
911 register_language ('name' => 'ratfor',
912 'Name' => 'Ratfor',
913 'config_vars' => ['F77'],
914 'linker' => 'F77LINK',
915 'link' => '$(F77LD) $(AM_FFLAGS) $(FFLAGS) $(AM_LDFLAGS) $(LDFLAGS) -o $@',
916 'lder' => 'F77LD',
917 'ld' => '$(F77)',
918 'flags' => ['RFLAGS', 'FFLAGS'],
919 # FIXME also FFLAGS.
920 'compile' => '$(F77) $(AM_FFLAGS) $(FFLAGS) $(AM_RFLAGS) $(RFLAGS)',
921 'compiler' => 'RCOMPILE',
922 'compile_flag' => '-c',
923 'output_flag' => '-o',
924 'libtool_tag' => 'F77',
925 'pure' => 1,
926 'extensions' => ['.r']);
928 # Java via gcj.
929 register_language ('name' => 'java',
930 'Name' => 'Java',
931 'config_vars' => ['GCJ'],
932 'linker' => 'GCJLINK',
933 'link' => '$(GCJLD) $(AM_GCJFLAGS) $(GCJFLAGS) $(AM_LDFLAGS) $(LDFLAGS) -o $@',
934 'autodep' => 'GCJ',
935 'flags' => ['GCJFLAGS'],
936 'compile' => '$(GCJ) $(AM_GCJFLAGS) $(GCJFLAGS)',
937 'compiler' => 'GCJCOMPILE',
938 'compile_flag' => '-c',
939 'output_flag' => '-o',
940 'libtool_tag' => 'GCJ',
941 'lder' => 'GCJLD',
942 'ld' => '$(GCJ)',
943 'pure' => 1,
944 'extensions' => ['.java', '.class', '.zip', '.jar']);
946 ################################################################
948 # Error reporting functions.
950 # err_am ($MESSAGE, [%OPTIONS])
951 # -----------------------------
952 # Uncategorized errors about the current Makefile.am.
953 sub err_am ($;%)
954 {
955 msg_am ('error', @_);
956 }
958 # err_ac ($MESSAGE, [%OPTIONS])
959 # -----------------------------
960 # Uncategorized errors about configure.ac.
961 sub err_ac ($;%)
962 {
963 msg_ac ('error', @_);
964 }
966 # msg_am ($CHANNEL, $MESSAGE, [%OPTIONS])
967 # ---------------------------------------
968 # Messages about about the current Makefile.am.
969 sub msg_am ($$;%)
970 {
971 my ($channel, $msg, %opts) = @_;
972 msg $channel, "${am_file}.am", $msg, %opts;
973 }
975 # msg_ac ($CHANNEL, $MESSAGE, [%OPTIONS])
976 # ---------------------------------------
977 # Messages about about configure.ac.
978 sub msg_ac ($$;%)
979 {
980 my ($channel, $msg, %opts) = @_;
981 msg $channel, $configure_ac, $msg, %opts;
982 }
984 ################################################################
986 # subst ($TEXT)
987 # -------------
988 # Return a configure-style substitution using the indicated text.
989 # We do this to avoid having the substitutions directly in automake.in;
990 # when we do that they are sometimes removed and this causes confusion
991 # and bugs.
992 sub subst ($)
993 {
994 my ($text) = @_;
995 return '@' . $text . '@';
996 }
998 ################################################################
1001 # $BACKPATH
1002 # &backname ($REL-DIR)
1003 # --------------------
1004 # If I `cd $REL-DIR', then to come back, I should `cd $BACKPATH'.
1005 # For instance `src/foo' => `../..'.
1006 # Works with non strictly increasing paths, i.e., `src/../lib' => `..'.
1007 sub backname ($)
1008 {
1009 my ($file) = @_;
1010 my @res;
1011 foreach (split (/\//, $file))
1012 {
1013 next if $_ eq '.' || $_ eq '';
1014 if ($_ eq '..')
1015 {
1016 pop @res;
1017 }
1018 else
1019 {
1020 push (@res, '..');
1021 }
1022 }
1023 return join ('/', @res) || '.';
1024 }
1026 ################################################################
1029 # Handle AUTOMAKE_OPTIONS variable. Return 1 on error, 0 otherwise.
1030 sub handle_options
1031 {
1032 my $var = var ('AUTOMAKE_OPTIONS');
1033 if ($var)
1034 {
1035 # FIXME: We should disallow conditional definitions of AUTOMAKE_OPTIONS.
1036 if (process_option_list ($var->rdef (TRUE)->location,
1037 $var->value_as_list_recursive (cond_filter =>
1038 TRUE)))
1039 {
1040 return 1;
1041 }
1042 }
1044 if ($strictness == GNITS)
1045 {
1046 set_option ('readme-alpha', INTERNAL);
1047 set_option ('std-options', INTERNAL);
1048 set_option ('check-news', INTERNAL);
1049 }
1051 return 0;
1052 }
1054 # shadow_unconditionally ($varname, $where)
1055 # -----------------------------------------
1056 # Return a $(variable) that contains all possible values
1057 # $varname can take.
1058 # If the VAR wasn't defined conditionally, return $(VAR).
1059 # Otherwise we create a am__VAR_DIST variable which contains
1060 # all possible values, and return $(am__VAR_DIST).
1061 sub shadow_unconditionally ($$)
1062 {
1063 my ($varname, $where) = @_;
1064 my $var = var $varname;
1065 if ($var->has_conditional_contents)
1066 {
1067 $varname = "am__${varname}_DIST";
1068 my @files = uniq ($var->value_as_list_recursive);
1069 define_pretty_variable ($varname, TRUE, $where, @files);
1070 }
1071 return "\$($varname)"
1072 }
1074 # get_object_extension ($EXTENSION)
1075 # ---------------------------------
1076 # Prefix $EXTENSION with $U if ansi2knr is in use.
1077 sub get_object_extension ($)
1078 {
1079 my ($extension) = @_;
1081 # Check for automatic de-ANSI-fication.
1082 $extension = '$U' . $extension
1083 if option 'ansi2knr';
1085 $get_object_extension_was_run = 1;
1087 return $extension;
1088 }
1090 # check_user_variables (@LIST)
1091 # ----------------------------
1092 # Make sure each variable VAR in @LIST do not exist, suggest using AM_VAR
1093 # otherwise.
1094 sub check_user_variables (@)
1095 {
1096 my @dont_override = @_;
1097 foreach my $flag (@dont_override)
1098 {
1099 my $var = var $flag;
1100 if ($var)
1101 {
1102 for my $cond ($var->conditions->conds)
1103 {
1104 if ($var->rdef ($cond)->owner == VAR_MAKEFILE)
1105 {
1106 msg_cond_var ('gnu', $cond, $flag,
1107 "`$flag' is a user variable, "
1108 . "you should not override it;\n"
1109 . "use `AM_$flag' instead.");
1110 }
1111 }
1112 }
1113 }
1114 }
1116 # Call finish function for each language that was used.
1117 sub handle_languages
1118 {
1119 if (! option 'no-dependencies')
1120 {
1121 # Include auto-dep code. Don't include it if DEP_FILES would
1122 # be empty.
1123 if (&saw_sources_p (0) && keys %dep_files)
1124 {
1125 # Set location of depcomp.
1126 &define_variable ('depcomp',
1127 "\$(SHELL) $am_config_aux_dir/depcomp",
1128 INTERNAL);
1129 &define_variable ('am__depfiles_maybe', 'depfiles', INTERNAL);
1131 require_conf_file ("$am_file.am", FOREIGN, 'depcomp');
1133 my @deplist = sort keys %dep_files;
1134 # Generate each `include' individually. Irix 6 make will
1135 # not properly include several files resulting from a
1136 # variable expansion; generating many separate includes
1137 # seems safest.
1138 $output_rules .= "\n";
1139 foreach my $iter (@deplist)
1140 {
1141 $output_rules .= (subst ('AMDEP_TRUE')
1142 . subst ('am__include')
1143 . ' '
1144 . subst ('am__quote')
1145 . $iter
1146 . subst ('am__quote')
1147 . "\n");
1148 }
1150 # Compute the set of directories to remove in distclean-depend.
1151 my @depdirs = uniq (map { dirname ($_) } @deplist);
1152 $output_rules .= &file_contents ('depend',
1153 new Automake::Location,
1154 DEPDIRS => "@depdirs");
1155 }
1156 }
1157 else
1158 {
1159 &define_variable ('depcomp', '', INTERNAL);
1160 &define_variable ('am__depfiles_maybe', '', INTERNAL);
1161 }
1163 my %done;
1165 # Is the c linker needed?
1166 my $needs_c = 0;
1167 foreach my $ext (sort keys %extension_seen)
1168 {
1169 next unless $extension_map{$ext};
1171 my $lang = $languages{$extension_map{$ext}};
1173 my $rule_file = $lang->rule_file || 'depend2';
1175 # Get information on $LANG.
1176 my $pfx = $lang->autodep;
1177 my $fpfx = ($pfx eq '') ? 'CC' : $pfx;
1179 my ($AMDEP, $FASTDEP) =
1180 (option 'no-dependencies' || $lang->autodep eq 'no')
1181 ? ('FALSE', 'FALSE') : ('AMDEP', "am__fastdep$fpfx");
1183 my %transform = ('EXT' => $ext,
1184 'PFX' => $pfx,
1185 'FPFX' => $fpfx,
1186 'AMDEP' => $AMDEP,
1187 'FASTDEP' => $FASTDEP,
1188 '-c' => $lang->compile_flag || '',
1189 'MORE-THAN-ONE'
1190 => (count_files_for_language ($lang->name) > 1),
1191 # These are not used, but they need to be defined
1192 # so &transform do not complain.
1193 SUBDIROBJ => 0,
1194 'DERIVED-EXT' => 'BUG',
1195 DIST_SOURCE => 1,
1196 );
1198 # Generate the appropriate rules for this extension.
1199 if (((! option 'no-dependencies') && $lang->autodep ne 'no')
1200 || defined $lang->compile)
1201 {
1202 # Some C compilers don't support -c -o. Use it only if really
1203 # needed.
1204 my $output_flag = $lang->output_flag || '';
1205 $output_flag = '-o'
1206 if (! $output_flag
1207 && $lang->name eq 'c'
1208 && option 'subdir-objects');
1210 # Compute a possible derived extension.
1211 # This is not used by depend2.am.
1212 my $der_ext = (&{$lang->output_extensions} ($ext))[0];
1214 # When we output an inference rule like `.c.o:' we
1215 # have two cases to consider: either subdir-objects
1216 # is used, or it is not.
1217 #
1218 # In the latter case the rule is used to build objects
1219 # in the current directory, and dependencies always
1220 # go into `./$(DEPDIR)/'. We can hard-code this value.
1221 #
1222 # In the former case the rule can be used to build
1223 # objects in sub-directories too. Dependencies should
1224 # go into the appropriate sub-directories, e.g.,
1225 # `sub/$(DEPDIR)/'. The value of this directory
1226 # need the be computed on-the-fly.
1227 #
1228 # DEPBASE holds the name of this directory, plus the
1229 # basename part of the object file (extensions Po, TPo,
1230 # Plo, TPlo will be added later as appropriate). It is
1231 # either hardcoded, or a shell variable (`$depbase') that
1232 # will be computed by the rule.
1233 my $depbase =
1234 option ('subdir-objects') ? '$$depbase' : '$(DEPDIR)/$*';
1235 $output_rules .=
1236 file_contents ($rule_file,
1237 new Automake::Location,
1238 %transform,
1239 GENERIC => 1,
1241 'DERIVED-EXT' => $der_ext,
1243 DEPBASE => $depbase,
1244 BASE => '$*',
1245 SOURCE => '$<',
1246 OBJ => '$@',
1247 OBJOBJ => '$@',
1248 LTOBJ => '$@',
1250 COMPILE => '$(' . $lang->compiler . ')',
1251 LTCOMPILE => '$(LT' . $lang->compiler . ')',
1252 -o => $output_flag,
1253 SUBDIROBJ => !! option 'subdir-objects');
1254 }
1256 # Now include code for each specially handled object with this
1257 # language.
1258 my %seen_files = ();
1259 foreach my $file (@{$lang_specific_files{$lang->name}})
1260 {
1261 my ($derived, $source, $obj, $myext, %file_transform) = @$file;
1263 # We might see a given object twice, for instance if it is
1264 # used under different conditions.
1265 next if defined $seen_files{$obj};
1266 $seen_files{$obj} = 1;
1268 prog_error ("found " . $lang->name .
1269 " in handle_languages, but compiler not defined")
1270 unless defined $lang->compile;
1272 my $obj_compile = $lang->compile;
1274 # Rewrite each occurrence of `AM_$flag' in the compile
1275 # rule into `${derived}_$flag' if it exists.
1276 for my $flag (@{$lang->flags})
1277 {
1278 my $val = "${derived}_$flag";
1279 $obj_compile =~ s/\(AM_$flag\)/\($val\)/
1280 if set_seen ($val);
1281 }
1283 my $libtool_tag = '';
1284 if ($lang->libtool_tag && exists $libtool_tags{$lang->libtool_tag})
1285 {
1286 $libtool_tag = '--tag=' . $lang->libtool_tag . ' '
1287 }
1289 my $ptltflags = "${derived}_LIBTOOLFLAGS";
1290 $ptltflags = 'AM_LIBTOOLFLAGS' unless set_seen $ptltflags;
1292 my $obj_ltcompile =
1293 "\$(LIBTOOL) $libtool_tag\$($ptltflags) \$(LIBTOOLFLAGS) "
1294 . "--mode=compile $obj_compile";
1296 # We _need_ `-o' for per object rules.
1297 my $output_flag = $lang->output_flag || '-o';
1299 my $depbase = dirname ($obj);
1300 $depbase = ''
1301 if $depbase eq '.';
1302 $depbase .= '/'
1303 unless $depbase eq '';
1304 $depbase .= '$(DEPDIR)/' . basename ($obj);
1306 # Support for deansified files in subdirectories is ugly
1307 # enough to deserve an explanation.
1308 #
1309 # A Note about normal ansi2knr processing first. On
1310 #
1311 # AUTOMAKE_OPTIONS = ansi2knr
1312 # bin_PROGRAMS = foo
1313 # foo_SOURCES = foo.c
1314 #
1315 # we generate rules similar to:
1316 #
1317 # foo: foo$U.o; link ...
1318 # foo$U.o: foo$U.c; compile ...
1319 # foo_.c: foo.c; ansi2knr ...
1320 #
1321 # this is fairly compact, and will call ansi2knr depending
1322 # on the value of $U (`' or `_').
1323 #
1324 # It's harder with subdir sources. On
1325 #
1326 # AUTOMAKE_OPTIONS = ansi2knr
1327 # bin_PROGRAMS = foo
1328 # foo_SOURCES = sub/foo.c
1329 #
1330 # we have to create foo_.c in the current directory.
1331 # (Unless the user asks 'subdir-objects'.) This is important
1332 # in case the same file (`foo.c') is compiled from other
1333 # directories with different cpp options: foo_.c would
1334 # be preprocessed for only one set of options if it were
1335 # put in the subdirectory.
1336 #
1337 # Because foo$U.o must be built from either foo_.c or
1338 # sub/foo.c we can't be as concise as in the first example.
1339 # Instead we output
1340 #
1341 # foo: foo$U.o; link ...
1342 # foo_.o: foo_.c; compile ...
1343 # foo.o: sub/foo.c; compile ...
1344 # foo_.c: foo.c; ansi2knr ...
1345 #
1346 # This is why we'll now transform $rule_file twice
1347 # if we detect this case.
1348 # A first time we output the compile rule with `$U'
1349 # replaced by `_' and the source directory removed,
1350 # and another time we simply remove `$U'.
1351 #
1352 # Note that at this point $source (as computed by
1353 # &handle_single_transform) is `sub/foo$U.c'.
1354 # This can be confusing: it can be used as-is when
1355 # subdir-objects is set, otherwise you have to know
1356 # it really means `foo_.c' or `sub/foo.c'.
1357 my $objdir = dirname ($obj);
1358 my $srcdir = dirname ($source);
1359 if ($lang->ansi && $obj =~ /\$U/)
1360 {
1361 prog_error "`$obj' contains \$U, but `$source' doesn't."
1362 if $source !~ /\$U/;
1364 (my $source_ = $source) =~ s/\$U/_/g;
1365 # Output an additional rule if _.c and .c are not in
1366 # the same directory. (_.c is always in $objdir.)
1367 if ($objdir ne $srcdir)
1368 {
1369 (my $obj_ = $obj) =~ s/\$U/_/g;
1370 (my $depbase_ = $depbase) =~ s/\$U/_/g;
1371 $source_ = basename ($source_);
1373 $output_rules .=
1374 file_contents ($rule_file,
1375 new Automake::Location,
1376 %transform,
1377 GENERIC => 0,
1379 DEPBASE => $depbase_,
1380 BASE => $obj_,
1381 SOURCE => $source_,
1382 OBJ => "$obj_$myext",
1383 OBJOBJ => "$obj_.obj",
1384 LTOBJ => "$obj_.lo",
1386 COMPILE => $obj_compile,
1387 LTCOMPILE => $obj_ltcompile,
1388 -o => $output_flag,
1389 %file_transform);
1390 $obj =~ s/\$U//g;
1391 $depbase =~ s/\$U//g;
1392 $source =~ s/\$U//g;
1393 }
1394 }
1396 $output_rules .=
1397 file_contents ($rule_file,
1398 new Automake::Location,
1399 %transform,
1400 GENERIC => 0,
1402 DEPBASE => $depbase,
1403 BASE => $obj,
1404 SOURCE => $source,
1405 # Use $myext and not `.o' here, in case
1406 # we are actually building a new source
1407 # file -- e.g. via yacc.
1408 OBJ => "$obj$myext",
1409 OBJOBJ => "$obj.obj",
1410 LTOBJ => "$obj.lo",
1412 COMPILE => $obj_compile,
1413 LTCOMPILE => $obj_ltcompile,
1414 -o => $output_flag,
1415 %file_transform);
1416 }
1418 # The rest of the loop is done once per language.
1419 next if defined $done{$lang};
1420 $done{$lang} = 1;
1422 # Load the language dependent Makefile chunks.
1423 my %lang = map { uc ($_) => 0 } keys %languages;
1424 $lang{uc ($lang->name)} = 1;
1425 $output_rules .= file_contents ('lang-compile',
1426 new Automake::Location,
1427 %transform, %lang);
1429 # If the source to a program consists entirely of code from a
1430 # `pure' language, for instance C++ or Fortran 77, then we
1431 # don't need the C compiler code. However if we run into
1432 # something unusual then we do generate the C code. There are
1433 # probably corner cases here that do not work properly.
1434 # People linking Java code to Fortran code deserve pain.
1435 $needs_c ||= ! $lang->pure;
1437 define_compiler_variable ($lang)
1438 if ($lang->compile);
1440 define_linker_variable ($lang)
1441 if ($lang->link);
1443 require_variables ("$am_file.am", $lang->Name . " source seen",
1444 TRUE, @{$lang->config_vars});
1446 # Call the finisher.
1447 $lang->finish;
1449 # Flags listed in `->flags' are user variables (per GNU Standards),
1450 # they should not be overridden in the Makefile...
1451 my @dont_override = @{$lang->flags};
1452 # ... and so is LDFLAGS.
1453 push @dont_override, 'LDFLAGS' if $lang->link;
1455 check_user_variables @dont_override;
1456 }
1458 # If the project is entirely C++ or entirely Fortran 77 (i.e., 1
1459 # suffix rule was learned), don't bother with the C stuff. But if
1460 # anything else creeps in, then use it.
1461 $needs_c = 1
1462 if $need_link || suffix_rules_count > 1;
1464 if ($needs_c)
1465 {
1466 &define_compiler_variable ($languages{'c'})
1467 unless defined $done{$languages{'c'}};
1468 define_linker_variable ($languages{'c'});
1469 }
1470 }
1472 # Check to make sure a source defined in LIBOBJS is not explicitly
1473 # mentioned. This is a separate function (as opposed to being inlined
1474 # in handle_source_transform) because it isn't always appropriate to
1475 # do this check.
1476 sub check_libobjs_sources
1477 {
1478 my ($one_file, $unxformed) = @_;
1480 foreach my $prefix ('', 'EXTRA_', 'dist_', 'nodist_',
1481 'dist_EXTRA_', 'nodist_EXTRA_')
1482 {
1483 my @files;
1484 my $varname = $prefix . $one_file . '_SOURCES';
1485 my $var = var ($varname);
1486 if ($var)
1487 {
1488 @files = $var->value_as_list_recursive;
1489 }
1490 elsif ($prefix eq '')
1491 {
1492 @files = ($unxformed . '.c');
1493 }
1494 else
1495 {
1496 next;
1497 }
1499 foreach my $file (@files)
1500 {
1501 err_var ($prefix . $one_file . '_SOURCES',
1502 "automatically discovered file `$file' should not" .
1503 " be explicitly mentioned")
1504 if defined $libsources{$file};
1505 }
1506 }
1507 }
1510 # @OBJECTS
1511 # handle_single_transform ($VAR, $TOPPARENT, $DERIVED, $OBJ, $FILE, %TRANSFORM)
1512 # -----------------------------------------------------------------------------
1513 # Does much of the actual work for handle_source_transform.
1514 # Arguments are:
1515 # $VAR is the name of the variable that the source filenames come from
1516 # $TOPPARENT is the name of the _SOURCES variable which is being processed
1517 # $DERIVED is the name of resulting executable or library
1518 # $OBJ is the object extension (e.g., `$U.lo')
1519 # $FILE the source file to transform
1520 # %TRANSFORM contains extras arguments to pass to file_contents
1521 # when producing explicit rules
1522 # Result is a list of the names of objects
1523 # %linkers_used will be updated with any linkers needed
1524 sub handle_single_transform ($$$$$%)
1525 {
1526 my ($var, $topparent, $derived, $obj, $_file, %transform) = @_;
1527 my @files = ($_file);
1528 my @result = ();
1529 my $nonansi_obj = $obj;
1530 $nonansi_obj =~ s/\$U//g;
1532 # Turn sources into objects. We use a while loop like this
1533 # because we might add to @files in the loop.
1534 while (scalar @files > 0)
1535 {
1536 $_ = shift @files;
1538 # Configure substitutions in _SOURCES variables are errors.
1539 if (/^\@.*\@$/)
1540 {
1541 my $parent_msg = '';
1542 $parent_msg = "\nand is referred to from `$topparent'"
1543 if $topparent ne $var->name;
1544 err_var ($var,
1545 "`" . $var->name . "' includes configure substitution `$_'"
1546 . $parent_msg . ";\nconfigure " .
1547 "substitutions are not allowed in _SOURCES variables");
1548 next;
1549 }
1551 # If the source file is in a subdirectory then the `.o' is put
1552 # into the current directory, unless the subdir-objects option
1553 # is in effect.
1555 # Split file name into base and extension.
1556 next if ! /^(?:(.*)\/)?([^\/]*)($KNOWN_EXTENSIONS_PATTERN)$/;
1557 my $full = $_;
1558 my $directory = $1 || '';
1559 my $base = $2;
1560 my $extension = $3;
1562 # We must generate a rule for the object if it requires its own flags.
1563 my $renamed = 0;
1564 my ($linker, $object);
1566 # This records whether we've seen a derived source file (e.g.
1567 # yacc output).
1568 my $derived_source = 0;
1570 # This holds the `aggregate context' of the file we are
1571 # currently examining. If the file is compiled with
1572 # per-object flags, then it will be the name of the object.
1573 # Otherwise it will be `AM'. This is used by the target hook
1574 # language function.
1575 my $aggregate = 'AM';
1577 $extension = &derive_suffix ($extension, $nonansi_obj);
1578 my $lang;
1579 if ($extension_map{$extension} &&
1580 ($lang = $languages{$extension_map{$extension}}))
1581 {
1582 # Found the language, so see what it says.
1583 &saw_extension ($extension);
1585 # Do we have per-executable flags for this executable?
1586 my $have_per_exec_flags = 0;
1587 my @peflags = @{$lang->flags};
1588 push @peflags, 'LIBTOOLFLAGS' if $nonansi_obj eq '.lo';
1589 foreach my $flag (@peflags)
1590 {
1591 if (set_seen ("${derived}_$flag"))
1592 {
1593 $have_per_exec_flags = 1;
1594 last;
1595 }
1596 }
1598 # Note: computed subr call. The language rewrite function
1599 # should return one of the LANG_* constants. It could
1600 # also return a list whose first value is such a constant
1601 # and whose second value is a new source extension which
1602 # should be applied. This means this particular language
1603 # generates another source file which we must then process
1604 # further.
1605 my $subr = \&{'lang_' . $lang->name . '_rewrite'};
1606 my ($r, $source_extension)
1607 = &$subr ($directory, $base, $extension,
1608 $nonansi_obj, $have_per_exec_flags, $var);
1609 # Skip this entry if we were asked not to process it.
1610 next if $r == LANG_IGNORE;
1612 # Now extract linker and other info.
1613 $linker = $lang->linker;
1615 my $this_obj_ext;
1616 if (defined $source_extension)
1617 {
1618 $this_obj_ext = $source_extension;
1619 $derived_source = 1;
1620 }
1621 elsif ($lang->ansi)
1622 {
1623 $this_obj_ext = $obj;
1624 }
1625 else
1626 {
1627 $this_obj_ext = $nonansi_obj;
1628 }
1629 $object = $base . $this_obj_ext;
1631 if ($have_per_exec_flags)
1632 {
1633 # We have a per-executable flag in effect for this
1634 # object. In this case we rewrite the object's
1635 # name to ensure it is unique.
1637 # We choose the name `DERIVED_OBJECT' to ensure
1638 # (1) uniqueness, and (2) continuity between
1639 # invocations. However, this will result in a
1640 # name that is too long for losing systems, in
1641 # some situations. So we provide _SHORTNAME to
1642 # override.
1644 my $dname = $derived;
1645 my $var = var ($derived . '_SHORTNAME');
1646 if ($var)
1647 {
1648 # FIXME: should use the same Condition as
1649 # the _SOURCES variable. But this is really
1650 # silly overkill -- nobody should have
1651 # conditional shortnames.
1652 $dname = $var->variable_value;
1653 }
1654 $object = $dname . '-' . $object;
1656 prog_error ($lang->name . " flags defined without compiler")
1657 if ! defined $lang->compile;
1659 $renamed = 1;
1660 }
1662 # If rewrite said it was ok, put the object into a
1663 # subdir.
1664 if ($r == LANG_SUBDIR && $directory ne '')
1665 {
1666 $object = $directory . '/' . $object;
1667 }
1669 # If the object file has been renamed (because per-target
1670 # flags are used) we cannot compile the file with an
1671 # inference rule: we need an explicit rule.
1672 #
1673 # If the source is in a subdirectory and the object is in
1674 # the current directory, we also need an explicit rule.
1675 #
1676 # If both source and object files are in a subdirectory
1677 # (this happens when the subdir-objects option is used),
1678 # then the inference will work.
1679 #
1680 # The latter case deserves a historical note. When the
1681 # subdir-objects option was added on 1999-04-11 it was
1682 # thought that inferences rules would work for
1683 # subdirectory objects too. Later, on 1999-11-22,
1684 # automake was changed to output explicit rules even for
1685 # subdir-objects. Nobody remembers why, but this occured
1686 # soon after the merge of the user-dep-gen-branch so it
1687 # might be related. In late 2003 people complained about
1688 # the size of the generated Makefile.ins (libgcj, with
1689 # 2200+ subdir objects was reported to have a 9MB
1690 # Makefile), so we now rely on inference rules again.
1691 # Maybe we'll run across the same issue as in the past,
1692 # but at least this time we can document it. However since
1693 # dependency tracking has evolved it is possible that
1694 # our old problem no longer exists.
1695 # Using inference rules for subdir-objects has been tested
1696 # with GNU make, Solaris make, Ultrix make, BSD make,
1697 # HP-UX make, and OSF1 make successfully.
1698 if ($renamed
1699 || ($directory ne '' && ! option 'subdir-objects')
1700 # We must also use specific rules for a nodist_ source
1701 # if its language requests it.
1702 || ($lang->nodist_specific && ! $transform{'DIST_SOURCE'}))
1703 {
1704 my $obj_sans_ext = substr ($object, 0,
1705 - length ($this_obj_ext));
1706 my $full_ansi = $full;
1707 if ($lang->ansi && option 'ansi2knr')
1708 {
1709 $full_ansi =~ s/$KNOWN_EXTENSIONS_PATTERN$/\$U$&/;
1710 $obj_sans_ext .= '$U';
1711 }
1713 my @specifics = ($full_ansi, $obj_sans_ext,
1714 # Only use $this_obj_ext in the derived
1715 # source case because in the other case we
1716 # *don't* want $(OBJEXT) to appear here.
1717 ($derived_source ? $this_obj_ext : '.o'));
1719 # If we renamed the object then we want to use the
1720 # per-executable flag name. But if this is simply a
1721 # subdir build then we still want to use the AM_ flag
1722 # name.
1723 if ($renamed)
1724 {
1725 unshift @specifics, $derived;
1726 $aggregate = $derived;
1727 }
1728 else
1729 {
1730 unshift @specifics, 'AM';
1731 }
1733 # Each item on this list is a reference to a list consisting
1734 # of four values followed by additional transform flags for
1735 # file_contents. The four values are the derived flag prefix
1736 # (e.g. for `foo_CFLAGS', it is `foo'), the name of the
1737 # source file, the base name of the output file, and
1738 # the extension for the object file.
1739 push (@{$lang_specific_files{$lang->name}},
1740 [@specifics, %transform]);
1741 }
1742 }
1743 elsif ($extension eq $nonansi_obj)
1744 {
1745 # This is probably the result of a direct suffix rule.
1746 # In this case we just accept the rewrite.
1747 $object = "$base$extension";
1748 $linker = '';
1749 }
1750 else
1751 {
1752 # No error message here. Used to have one, but it was
1753 # very unpopular.
1754 # FIXME: we could potentially do more processing here,
1755 # perhaps treating the new extension as though it were a
1756 # new source extension (as above). This would require
1757 # more restructuring than is appropriate right now.
1758 next;
1759 }
1761 err_am "object `$object' created by `$full' and `$object_map{$object}'"
1762 if (defined $object_map{$object}
1763 && $object_map{$object} ne $full);
1765 my $comp_val = (($object =~ /\.lo$/)
1766 ? COMPILE_LIBTOOL : COMPILE_ORDINARY);
1767 (my $comp_obj = $object) =~ s/\.lo$/.\$(OBJEXT)/;
1768 if (defined $object_compilation_map{$comp_obj}
1769 && $object_compilation_map{$comp_obj} != 0
1770 # Only see the error once.
1771 && ($object_compilation_map{$comp_obj}
1772 != (COMPILE_LIBTOOL | COMPILE_ORDINARY))
1773 && $object_compilation_map{$comp_obj} != $comp_val)
1774 {
1775 err_am "object `$comp_obj' created both with libtool and without";
1776 }
1777 $object_compilation_map{$comp_obj} |= $comp_val;
1779 if (defined $lang)
1780 {
1781 # Let the language do some special magic if required.
1782 $lang->target_hook ($aggregate, $object, $full, %transform);
1783 }
1785 if ($derived_source)
1786 {
1787 prog_error ($lang->name . " has automatic dependency tracking")
1788 if $lang->autodep ne 'no';
1789 # Make sure this new source file is handled next. That will
1790 # make it appear to be at the right place in the list.
1791 unshift (@files, $object);
1792 # Distribute derived sources unless the source they are
1793 # derived from is not.
1794 &push_dist_common ($object)
1795 unless ($topparent =~ /^(?:nobase_)?nodist_/);
1796 next;
1797 }
1799 $linkers_used{$linker} = 1;
1801 push (@result, $object);
1803 if (! defined $object_map{$object})
1804 {
1805 my @dep_list = ();
1806 $object_map{$object} = $full;
1808 # If resulting object is in subdir, we need to make
1809 # sure the subdir exists at build time.
1810 if ($object =~ /\//)
1811 {
1812 # FIXME: check that $DIRECTORY is somewhere in the
1813 # project
1815 # For Java, the way we're handling it right now, a
1816 # `..' component doesn't make sense.
1817 if ($lang->name eq 'java' && $object =~ /(\/|^)\.\.\//)
1818 {
1819 err_am "`$full' should not contain a `..' component";
1820 }
1822 # Make sure object is removed by `make mostlyclean'.
1823 $compile_clean_files{$object} = MOSTLY_CLEAN;
1824 # If we have a libtool object then we also must remove
1825 # the ordinary .o.
1826 if ($object =~ /\.lo$/)
1827 {
1828 (my $xobj = $object) =~ s,lo$,\$(OBJEXT),;
1829 $compile_clean_files{$xobj} = MOSTLY_CLEAN;
1831 # Remove any libtool object in this directory.
1832 $libtool_clean_directories{$directory} = 1;
1833 }
1835 push (@dep_list, require_build_directory ($directory));
1837 # If we're generating dependencies, we also want
1838 # to make sure that the appropriate subdir of the
1839 # .deps directory is created.
1840 push (@dep_list,
1841 require_build_directory ($directory . '/$(DEPDIR)'))
1842 unless option 'no-dependencies';
1843 }
1845 &pretty_print_rule ($object . ':', "\t", @dep_list)
1846 if scalar @dep_list > 0;
1847 }
1849 # Transform .o or $o file into .P file (for automatic
1850 # dependency code).
1851 if ($lang && $lang->autodep ne 'no')
1852 {
1853 my $depfile = $object;
1854 $depfile =~ s/\.([^.]*)$/.P$1/;
1855 $depfile =~ s/\$\(OBJEXT\)$/o/;
1856 $dep_files{dirname ($depfile) . '/$(DEPDIR)/'
1857 . basename ($depfile)} = 1;
1858 }
1859 }
1861 return @result;
1862 }
1865 # $LINKER
1866 # define_objects_from_sources ($VAR, $OBJVAR, $NODEFINE, $ONE_FILE,
1867 # $OBJ, $PARENT, $TOPPARENT, $WHERE, %TRANSFORM)
1868 # ---------------------------------------------------------------------------
1869 # Define an _OBJECTS variable for a _SOURCES variable (or subvariable)
1870 #
1871 # Arguments are:
1872 # $VAR is the name of the _SOURCES variable
1873 # $OBJVAR is the name of the _OBJECTS variable if known (otherwise
1874 # it will be generated and returned).
1875 # $NODEFINE is a boolean: if true, $OBJVAR will not be defined (but
1876 # work done to determine the linker will be).
1877 # $ONE_FILE is the canonical (transformed) name of object to build
1878 # $OBJ is the object extension (i.e. either `.o' or `.lo').
1879 # $TOPPARENT is the _SOURCES variable being processed.
1880 # $WHERE context into which this definition is done
1881 # %TRANSFORM extra arguments to pass to file_contents when producing
1882 # rules
1883 #
1884 # Result is a pair ($LINKER, $OBJVAR):
1885 # $LINKER is a boolean, true if a linker is needed to deal with the objects
1886 sub define_objects_from_sources ($$$$$$$%)
1887 {
1888 my ($var, $objvar, $nodefine, $one_file,
1889 $obj, $topparent, $where, %transform) = @_;
1891 my $needlinker = "";
1893 transform_variable_recursively
1894 ($var, $objvar, 'am__objects', $nodefine, $where,
1895 # The transform code to run on each filename.
1896 sub {
1897 my ($subvar, $val, $cond, $full_cond) = @_;
1898 my @trans = handle_single_transform ($subvar, $topparent,
1899 $one_file, $obj, $val,
1900 %transform);
1901 $needlinker = "true" if @trans;
1902 return @trans;
1903 });
1905 return $needlinker;
1906 }
1909 # handle_source_transform ($CANON_TARGET, $TARGET, $OBJEXT, $WHERE, %TRANSFORM)
1910 # -----------------------------------------------------------------------------
1911 # Handle SOURCE->OBJECT transform for one program or library.
1912 # Arguments are:
1913 # canonical (transformed) name of target to build
1914 # actual target of object to build
1915 # object extension (i.e. either `.o' or `$o'.
1916 # location of the source variable
1917 # extra arguments to pass to file_contents when producing rules
1918 # Return result is name of linker variable that must be used.
1919 # Empty return means just use `LINK'.
1920 sub handle_source_transform ($$$$%)
1921 {
1922 # one_file is canonical name. unxformed is given name. obj is
1923 # object extension.
1924 my ($one_file, $unxformed, $obj, $where, %transform) = @_;
1926 my ($linker) = '';
1928 # No point in continuing if _OBJECTS is defined.
1929 return if reject_var ($one_file . '_OBJECTS',
1930 $one_file . '_OBJECTS should not be defined');
1932 my %used_pfx = ();
1933 my $needlinker;
1934 %linkers_used = ();
1935 foreach my $prefix ('', 'EXTRA_', 'dist_', 'nodist_',
1936 'dist_EXTRA_', 'nodist_EXTRA_')
1937 {
1938 my $varname = $prefix . $one_file . "_SOURCES";
1939 my $var = var $varname;
1940 next unless $var;
1942 # We are going to define _OBJECTS variables using the prefix.
1943 # Then we glom them all together. So we can't use the null
1944 # prefix here as we need it later.
1945 my $xpfx = ($prefix eq '') ? 'am_' : $prefix;
1947 # Keep track of which prefixes we saw.
1948 $used_pfx{$xpfx} = 1
1949 unless $prefix =~ /EXTRA_/;
1951 push @sources, "\$($varname)";
1952 push @dist_sources, shadow_unconditionally ($varname, $where)
1953 unless (option ('no-dist') || $prefix =~ /^nodist_/);
1955 $needlinker |=
1956 define_objects_from_sources ($varname,
1957 $xpfx . $one_file . '_OBJECTS',
1958 $prefix =~ /EXTRA_/,
1959 $one_file, $obj, $varname, $where,
1960 DIST_SOURCE => ($prefix !~ /^nodist_/),
1961 %transform);
1962 }
1963 if ($needlinker)
1964 {
1965 $linker ||= &resolve_linker (%linkers_used);
1966 }
1968 my @keys = sort keys %used_pfx;
1969 if (scalar @keys == 0)
1970 {
1971 # The default source for libfoo.la is libfoo.c, but for
1972 # backward compatibility we first look at libfoo_la.c
1973 my $old_default_source = "$one_file.c";
1974 (my $default_source = $unxformed) =~ s,(\.[^./\\]*)?$,.c,;
1975 if ($old_default_source ne $default_source
1976 && (rule $old_default_source
1977 || rule '$(srcdir)/' . $old_default_source
1978 || rule '${srcdir}/' . $old_default_source
1979 || -f $old_default_source))
1980 {
1981 my $loc = $where->clone;
1982 $loc->pop_context;
1983 msg ('obsolete', $loc,
1984 "the default source for `$unxformed' has been changed "
1985 . "to `$default_source'.\n(Using `$old_default_source' for "
1986 . "backward compatibility.)");
1987 $default_source = $old_default_source;
1988 }
1989 # If a rule exists to build this source with a $(srcdir)
1990 # prefix, use that prefix in our variables too. This is for
1991 # the sake of BSD Make.
1992 if (rule '$(srcdir)/' . $default_source
1993 || rule '${srcdir}/' . $default_source)
1994 {
1995 $default_source = '$(srcdir)/' . $default_source;
1996 }
1998 &define_variable ($one_file . "_SOURCES", $default_source, $where);
1999 push (@sources, $default_source);
2000 push (@dist_sources, $default_source);
2002 %linkers_used = ();
2003 my (@result) =
2004 handle_single_transform ($one_file . '_SOURCES',
2005 $one_file . '_SOURCES',
2006 $one_file, $obj,
2007 $default_source, %transform);
2008 $linker ||= &resolve_linker (%linkers_used);
2009 define_pretty_variable ($one_file . '_OBJECTS', TRUE, $where, @result);
2010 }
2011 else
2012 {
2013 @keys = map { '$(' . $_ . $one_file . '_OBJECTS)' } @keys;
2014 define_pretty_variable ($one_file . '_OBJECTS', TRUE, $where, @keys);
2015 }
2017 # If we want to use `LINK' we must make sure it is defined.
2018 if ($linker eq '')
2019 {
2020 $need_link = 1;
2021 }
2023 return $linker;
2024 }
2027 # handle_lib_objects ($XNAME, $VAR)
2028 # ---------------------------------
2029 # Special-case ALLOCA and LIBOBJS substitutions in _LDADD or _LIBADD variables.
2030 # Also, generate _DEPENDENCIES variable if appropriate.
2031 # Arguments are:
2032 # transformed name of object being built, or empty string if no object
2033 # name of _LDADD/_LIBADD-type variable to examine
2034 # Returns 1 if LIBOBJS seen, 0 otherwise.
2035 sub handle_lib_objects
2036 {
2037 my ($xname, $varname) = @_;
2039 my $var = var ($varname);
2040 prog_error "handle_lib_objects: `$varname' undefined"
2041 unless $var;
2042 prog_error "handle_lib_objects: unexpected variable name `$varname'"
2043 unless $varname =~ /^(.*)(?:LIB|LD)ADD$/;
2044 my $prefix = $1 || 'AM_';
2046 my $seen_libobjs = 0;
2047 my $flagvar = 0;
2049 transform_variable_recursively
2050 ($varname, $xname . '_DEPENDENCIES', 'am__DEPENDENCIES',
2051 ! $xname, INTERNAL,
2052 # Transformation function, run on each filename.
2053 sub {
2054 my ($subvar, $val, $cond, $full_cond) = @_;
2056 if ($val =~ /^-/)
2057 {
2058 # Skip -lfoo and -Ldir silently; these are explicitly allowed.
2059 if ($val !~ /^-[lL]/ &&
2060 # Skip -dlopen and -dlpreopen; these are explicitly allowed
2061 # for Libtool libraries or programs. (Actually we are a bit
2062 # laxest here since this code also applies to non-libtool
2063 # libraries or programs, for which -dlopen and -dlopreopen
2064 # are pure non-sence. Diagnosting this doesn't seems very
2065 # important: the developer will quickly get complaints from
2066 # the linker.)
2067 $val !~ /^-dl(?:pre)?open$/ &&
2068 # Only get this error once.
2069 ! $flagvar)
2070 {
2071 $flagvar = 1;
2072 # FIXME: should display a stack of nested variables
2073 # as context when $var != $subvar.
2074 err_var ($var, "linker flags such as `$val' belong in "
2075 . "`${prefix}LDFLAGS");
2076 }
2077 return ();
2078 }
2079 elsif ($val !~ /^\@.*\@$/)
2080 {
2081 # Assume we have a file of some sort, and output it into the
2082 # dependency variable. Autoconf substitutions are not output;
2083 # rarely is a new dependency substituted into e.g. foo_LDADD
2084 # -- but bad things (e.g. -lX11) are routinely substituted.
2085 # Note that LIBOBJS and ALLOCA are exceptions to this rule,
2086 # and handled specially below.
2087 return $val;
2088 }
2089 elsif ($val =~ /^\@(LT)?LIBOBJS\@$/)
2090 {
2091 handle_LIBOBJS ($subvar, $cond, $1);
2092 $seen_libobjs = 1;
2093 return $val;
2094 }
2095 elsif ($val =~ /^\@(LT)?ALLOCA\@$/)
2096 {
2097 handle_ALLOCA ($subvar, $cond, $1);
2098 return $val;
2099 }
2100 else
2101 {
2102 return ();
2103 }
2104 });
2106 return $seen_libobjs;
2107 }
2109 sub handle_LIBOBJS ($$$)
2110 {
2111 my ($var, $cond, $lt) = @_;
2112 $lt ||= '';
2113 my $myobjext = ($1 ? 'l' : '') . 'o';
2115 $var->requires_variables ("\@${lt}LIBOBJS\@ used", $lt . 'LIBOBJS')
2116 if ! keys %libsources;
2118 foreach my $iter (keys %libsources)
2119 {
2120 if ($iter =~ /\.[cly]$/)
2121 {
2122 &saw_extension ($&);
2123 &saw_extension ('.c');
2124 }
2126 if ($iter =~ /\.h$/)
2127 {
2128 require_file_with_macro ($cond, $var, FOREIGN, $iter);
2129 }
2130 elsif ($iter ne 'alloca.c')
2131 {
2132 my $rewrite = $iter;
2133 $rewrite =~ s/\.c$/.P$myobjext/;
2134 $dep_files{'$(DEPDIR)/' . $rewrite} = 1;
2135 $rewrite = "^" . quotemeta ($iter) . "\$";
2136 # Only require the file if it is not a built source.
2137 my $bs = var ('BUILT_SOURCES');
2138 if (! $bs || ! grep (/$rewrite/, $bs->value_as_list_recursive))
2139 {
2140 require_file_with_macro ($cond, $var, FOREIGN, $iter);
2141 }
2142 }
2143 }
2144 }
2146 sub handle_ALLOCA ($$$)
2147 {
2148 my ($var, $cond, $lt) = @_;
2149 my $myobjext = ($lt ? 'l' : '') . 'o';
2150 $lt ||= '';
2151 $var->requires_variables ("\@${lt}ALLOCA\@ used", $lt . 'ALLOCA');
2152 $dep_files{'$(DEPDIR)/alloca.P' . $myobjext} = 1;
2153 require_file_with_macro ($cond, $var, FOREIGN, 'alloca.c');
2154 &saw_extension ('c');
2155 }
2157 # Canonicalize the input parameter
2158 sub canonicalize
2159 {
2160 my ($string) = @_;
2161 $string =~ tr/A-Za-z0-9_\@/_/c;
2162 return $string;
2163 }
2165 # Canonicalize a name, and check to make sure the non-canonical name
2166 # is never used. Returns canonical name. Arguments are name and a
2167 # list of suffixes to check for.
2168 sub check_canonical_spelling
2169 {
2170 my ($name, @suffixes) = @_;
2172 my $xname = &canonicalize ($name);
2173 if ($xname ne $name)
2174 {
2175 foreach my $xt (@suffixes)
2176 {
2177 reject_var ("$name$xt", "use `$xname$xt', not `$name$xt'");
2178 }
2179 }
2181 return $xname;
2182 }
2185 # handle_compile ()
2186 # -----------------
2187 # Set up the compile suite.
2188 sub handle_compile ()
2189 {
2190 return
2191 unless $get_object_extension_was_run;
2193 # Boilerplate.
2194 my $default_includes = '';
2195 if (! option 'nostdinc')
2196 {
2197 $default_includes = ' -I. -I$(srcdir)';
2199 my $var = var 'CONFIG_HEADER';
2200 if ($var)
2201 {
2202 foreach my $hdr (split (' ', $var->variable_value))
2203 {
2204 $default_includes .= ' -I' . dirname ($hdr);
2205 }
2206 }
2207 }
2209 my (@mostly_rms, @dist_rms);
2210 foreach my $item (sort keys %compile_clean_files)
2211 {
2212 if ($compile_clean_files{$item} == MOSTLY_CLEAN)
2213 {
2214 push (@mostly_rms, "\t-rm -f $item");
2215 }
2216 elsif ($compile_clean_files{$item} == DIST_CLEAN)
2217 {
2218 push (@dist_rms, "\t-rm -f $item");
2219 }
2220 else
2221 {
2222 prog_error 'invalid entry in %compile_clean_files';
2223 }
2224 }
2226 my ($coms, $vars, $rules) =
2227 &file_contents_internal (1, "$libdir/am/compile.am",
2228 new Automake::Location,
2229 ('DEFAULT_INCLUDES' => $default_includes,
2230 'MOSTLYRMS' => join ("\n", @mostly_rms),
2231 'DISTRMS' => join ("\n", @dist_rms)));
2232 $output_vars .= $vars;
2233 $output_rules .= "$coms$rules";
2235 # Check for automatic de-ANSI-fication.
2236 if (option 'ansi2knr')
2237 {
2238 my ($ansi2knr_filename, $ansi2knr_where) = @{option 'ansi2knr'};
2239 my $ansi2knr_dir = '';
2241 require_variables ($ansi2knr_where, "option `ansi2knr' is used",
2242 TRUE, "ANSI2KNR", "U");
2244 # topdir is where ansi2knr should be.
2245 if ($ansi2knr_filename eq 'ansi2knr')
2246 {
2247 # Only require ansi2knr files if they should appear in
2248 # this directory.
2249 require_file ($ansi2knr_where, FOREIGN,
2250 'ansi2knr.c', 'ansi2knr.1');
2252 # ansi2knr needs to be built before subdirs, so unshift it.
2253 unshift (@all, '$(ANSI2KNR)');
2254 }
2255 else
2256 {
2257 $ansi2knr_dir = dirname ($ansi2knr_filename);
2258 }
2260 $output_rules .= &file_contents ('ansi2knr',
2261 new Automake::Location,
2262 'ANSI2KNR-DIR' => $ansi2knr_dir);
2264 }
2265 }
2267 # handle_libtool ()
2268 # -----------------
2269 # Handle libtool rules.
2270 sub handle_libtool
2271 {
2272 return unless var ('LIBTOOL');
2274 # Libtool requires some files, but only at top level.
2275 # (Starting with Libtool 2.0 we do not have to bother. These
2276 # requirements are done with AC_REQUIRE_AUX_FILE.)
2277 require_conf_file_with_macro (TRUE, 'LIBTOOL', FOREIGN, @libtool_files)
2278 if $relative_dir eq '.' && ! $libtool_new_api;
2280 my @libtool_rms;
2281 foreach my $item (sort keys %libtool_clean_directories)
2282 {
2283 my $dir = ($item eq '.') ? '' : "$item/";
2284 # .libs is for Unix, _libs for DOS.
2285 push (@libtool_rms, "\t-rm -rf ${dir}.libs ${dir}_libs");
2286 }
2288 check_user_variables 'LIBTOOLFLAGS';
2290 # Output the libtool compilation rules.
2291 $output_rules .= &file_contents ('libtool',
2292 new Automake::Location,
2293 LTRMS => join ("\n", @libtool_rms));
2294 }
2296 # handle_programs ()
2297 # ------------------
2298 # Handle C programs.
2299 sub handle_programs
2300 {
2301 my @proglist = &am_install_var ('progs', 'PROGRAMS',
2302 'bin', 'sbin', 'libexec', 'pkglib',
2303 'noinst', 'check');
2304 return if ! @proglist;
2306 my $seen_global_libobjs =
2307 var ('LDADD') && &handle_lib_objects ('', 'LDADD');
2309 foreach my $pair (@proglist)
2310 {
2311 my ($where, $one_file) = @$pair;
2313 my $seen_libobjs = 0;
2314 my $obj = get_object_extension '.$(OBJEXT)';
2316 # Strip any $(EXEEXT) suffix the user might have added, or this
2317 # will confuse &handle_source_transform and &check_canonical_spelling.
2318 # We'll add $(EXEEXT) back later anyway.
2319 $one_file =~ s/\$\(EXEEXT\)$//;
2321 # Canonicalize names and check for misspellings.
2322 my $xname = &check_canonical_spelling ($one_file, '_LDADD', '_LDFLAGS',
2323 '_SOURCES', '_OBJECTS',
2324 '_DEPENDENCIES');
2326 $where->push_context ("while processing program `$one_file'");
2327 $where->set (INTERNAL->get);
2329 my $linker = &handle_source_transform ($xname, $one_file, $obj, $where,
2330 NONLIBTOOL => 1, LIBTOOL => 0);
2332 if (var ($xname . "_LDADD"))
2333 {
2334 $seen_libobjs = &handle_lib_objects ($xname, $xname . '_LDADD');
2335 }
2336 else
2337 {
2338 # User didn't define prog_LDADD override. So do it.
2339 &define_variable ($xname . '_LDADD', '$(LDADD)', $where);
2341 # This does a bit too much work. But we need it to
2342 # generate _DEPENDENCIES when appropriate.
2343 if (var ('LDADD'))
2344 {
2345 $seen_libobjs = &handle_lib_objects ($xname, 'LDADD');
2346 }
2347 }
2349 reject_var ($xname . '_LIBADD',
2350 "use `${xname}_LDADD', not `${xname}_LIBADD'");
2352 set_seen ($xname . '_DEPENDENCIES');
2353 set_seen ($xname . '_LDFLAGS');
2355 # Determine program to use for link.
2356 my $xlink;
2357 if (var ($xname . '_LINK'))
2358 {
2359 $xlink = $xname . '_LINK';
2360 }
2361 else
2362 {
2363 $xlink = $linker ? $linker : 'LINK';
2364 }
2366 # If the resulting program lies into a subdirectory,
2367 # make sure this directory will exist.
2368 my $dirstamp = require_build_directory_maybe ($one_file);
2370 $output_rules .= &file_contents ('program',
2371 $where,
2372 PROGRAM => $one_file,
2373 XPROGRAM => $xname,
2374 XLINK => $xlink,
2375 DIRSTAMP => $dirstamp,
2376 EXEEXT => '$(EXEEXT)');
2378 if ($seen_libobjs || $seen_global_libobjs)
2379 {
2380 if (var ($xname . '_LDADD'))
2381 {
2382 &check_libobjs_sources ($xname, $xname . '_LDADD');
2383 }
2384 elsif (var ('LDADD'))
2385 {
2386 &check_libobjs_sources ($xname, 'LDADD');
2387 }
2388 }
2389 }
2390 }
2393 # handle_libraries ()
2394 # -------------------
2395 # Handle libraries.
2396 sub handle_libraries
2397 {
2398 my @liblist = &am_install_var ('libs', 'LIBRARIES',
2399 'lib', 'pkglib', 'noinst', 'check');
2400 return if ! @liblist;
2402 my @prefix = am_primary_prefixes ('LIBRARIES', 0, 'lib', 'pkglib',
2403 'noinst', 'check');
2405 if (@prefix)
2406 {
2407 my $var = rvar ($prefix[0] . '_LIBRARIES');
2408 $var->requires_variables ('library used', 'RANLIB');
2409 }
2411 &define_variable ('AR', 'ar', INTERNAL);
2412 &define_variable ('ARFLAGS', 'cru', INTERNAL);
2414 foreach my $pair (@liblist)
2415 {
2416 my ($where, $onelib) = @$pair;
2418 my $seen_libobjs = 0;
2419 # Check that the library fits the standard naming convention.
2420 my $bn = basename ($onelib);
2421 if ($bn !~ /^lib.*\.a$/)
2422 {
2423 $bn =~ s/^(?:lib)?(.*?)(?:\.[^.]*)?$/lib$1.a/;
2424 my $suggestion = dirname ($onelib) . "/$bn";
2425 $suggestion =~ s|^\./||g;
2426 msg ('error-gnu/warn', $where,
2427 "`$onelib' is not a standard library name\n"
2428 . "did you mean `$suggestion'?")
2429 }
2431 $where->push_context ("while processing library `$onelib'");
2432 $where->set (INTERNAL->get);
2434 my $obj = get_object_extension '.$(OBJEXT)';
2436 # Canonicalize names and check for misspellings.
2437 my $xlib = &check_canonical_spelling ($onelib, '_LIBADD', '_SOURCES',
2438 '_OBJECTS', '_DEPENDENCIES',
2439 '_AR');
2441 if (! var ($xlib . '_AR'))
2442 {
2443 &define_variable ($xlib . '_AR', '$(AR) $(ARFLAGS)', $where);
2444 }
2446 # Generate support for conditional object inclusion in
2447 # libraries.
2448 if (var ($xlib . '_LIBADD'))
2449 {
2450 if (&handle_lib_objects ($xlib, $xlib . '_LIBADD'))
2451 {
2452 $seen_libobjs = 1;
2453 }
2454 }
2455 else
2456 {
2457 &define_variable ($xlib . "_LIBADD", '', $where);
2458 }
2460 reject_var ($xlib . '_LDADD',
2461 "use `${xlib}_LIBADD', not `${xlib}_LDADD'");
2463 # Make sure we at look at this.
2464 set_seen ($xlib . '_DEPENDENCIES');
2466 &handle_source_transform ($xlib, $onelib, $obj, $where,
2467 NONLIBTOOL => 1, LIBTOOL => 0);
2469 # If the resulting library lies into a subdirectory,
2470 # make sure this directory will exist.
2471 my $dirstamp = require_build_directory_maybe ($onelib);
2473 $output_rules .= &file_contents ('library',
2474 $where,
2475 LIBRARY => $onelib,
2476 XLIBRARY => $xlib,
2477 DIRSTAMP => $dirstamp);
2479 if ($seen_libobjs)
2480 {
2481 if (var ($xlib . '_LIBADD'))
2482 {
2483 &check_libobjs_sources ($xlib, $xlib . '_LIBADD');
2484 }
2485 }
2486 }
2487 }
2490 # handle_ltlibraries ()
2491 # ---------------------
2492 # Handle shared libraries.
2493 sub handle_ltlibraries
2494 {
2495 my @liblist = &am_install_var ('ltlib', 'LTLIBRARIES',
2496 'noinst', 'lib', 'pkglib', 'check');
2497 return if ! @liblist;
2499 my @prefix = am_primary_prefixes ('LTLIBRARIES', 0, 'lib', 'pkglib',
2500 'noinst', 'check');
2502 if (@prefix)
2503 {
2504 my $var = rvar ($prefix[0] . '_LTLIBRARIES');
2505 $var->requires_variables ('Libtool library used', 'LIBTOOL');
2506 }
2508 my %instdirs = ();
2509 my %instconds = ();
2510 my %liblocations = (); # Location (in Makefile.am) of each library.
2512 foreach my $key (@prefix)
2513 {
2514 # Get the installation directory of each library.
2515 (my $dir = $key) =~ s/^nobase_//;
2516 my $var = rvar ($key . '_LTLIBRARIES');
2518 # We reject libraries which are installed in several places
2519 # in the same condition, because we can only specify one
2520 # `-rpath' option.
2521 $var->traverse_recursively
2522 (sub
2523 {
2524 my ($var, $val, $cond, $full_cond) = @_;
2525 my $hcond = $full_cond->human;
2526 my $where = $var->rdef ($cond)->location;
2527 # A library cannot be installed in different directory
2528 # in overlapping conditions.
2529 if (exists $instconds{$val})
2530 {
2531 my ($msg, $acond) =
2532 $instconds{$val}->ambiguous_p ($val, $full_cond);
2534 if ($msg)
2535 {
2536 error ($where, $msg, partial => 1);
2538 my $dirtxt = "installed in `$dir'";
2539 $dirtxt = "built for `$dir'"
2540 if $dir eq 'EXTRA' || $dir eq 'noinst' || $dir eq 'check';
2541 my $dircond =
2542 $full_cond->true ? "" : " in condition $hcond";
2544 error ($where, "`$val' should be $dirtxt$dircond ...",
2545 partial => 1);
2547 my $hacond = $acond->human;
2548 my $adir = $instdirs{$val}{$acond};
2549 my $adirtxt = "installed in `$adir'";
2550 $adirtxt = "built for `$adir'"
2551 if ($adir eq 'EXTRA' || $adir eq 'noinst'
2552 || $adir eq 'check');
2553 my $adircond = $acond->true ? "" : " in condition $hacond";
2555 my $onlyone = ($dir ne $adir) ?
2556 ("\nLibtool libraries can be built for only one "
2557 . "destination.") : "";
2559 error ($liblocations{$val}{$acond},
2560 "... and should also be $adirtxt$adircond.$onlyone");
2561 return;
2562 }
2563 }
2564 else
2565 {
2566 $instconds{$val} = new Automake::DisjConditions;
2567 }
2568 $instdirs{$val}{$full_cond} = $dir;
2569 $liblocations{$val}{$full_cond} = $where;
2570 $instconds{$val} = $instconds{$val}->merge ($full_cond);
2571 },
2572 sub
2573 {
2574 return ();
2575 },
2576 skip_ac_subst => 1);
2577 }
2579 foreach my $pair (@liblist)
2580 {
2581 my ($where, $onelib) = @$pair;
2583 my $seen_libobjs = 0;
2584 my $obj = get_object_extension '.lo';
2586 # Canonicalize names and check for misspellings.
2587 my $xlib = &check_canonical_spelling ($onelib, '_LIBADD', '_LDFLAGS',
2588 '_SOURCES', '_OBJECTS',
2589 '_DEPENDENCIES');
2591 # Check that the library fits the standard naming convention.
2592 my $libname_rx = '^lib.*\.la';
2593 my $ldvar = var ("${xlib}_LDFLAGS") || var ('AM_LDFLAGS');
2594 my $ldvar2 = var ('LDFLAGS');
2595 if (($ldvar && grep (/-module/, $ldvar->value_as_list_recursive))
2596 || ($ldvar2 && grep (/-module/, $ldvar2->value_as_list_recursive)))
2597 {
2598 # Relax name checking for libtool modules.
2599 $libname_rx = '\.la';
2600 }
2602 my $bn = basename ($onelib);
2603 if ($bn !~ /$libname_rx$/)
2604 {
2605 my $type = 'library';
2606 if ($libname_rx eq '\.la')
2607 {
2608 $bn =~ s/^(lib|)(.*?)(?:\.[^.]*)?$/$1$2.la/;
2609 $type = 'module';
2610 }
2611 else
2612 {
2613 $bn =~ s/^(?:lib)?(.*?)(?:\.[^.]*)?$/lib$1.la/;
2614 }
2615 my $suggestion = dirname ($onelib) . "/$bn";
2616 $suggestion =~ s|^\./||g;
2617 msg ('error-gnu/warn', $where,
2618 "`$onelib' is not a standard libtool $type name\n"
2619 . "did you mean `$suggestion'?")
2620 }
2622 $where->push_context ("while processing Libtool library `$onelib'");
2623 $where->set (INTERNAL->get);
2625 # Make sure we look at these.
2626 set_seen ($xlib . '_LDFLAGS');
2627 set_seen ($xlib . '_DEPENDENCIES');
2629 # Generate support for conditional object inclusion in
2630 # libraries.
2631 if (var ($xlib . '_LIBADD'))
2632 {
2633 if (&handle_lib_objects ($xlib, $xlib . '_LIBADD'))
2634 {
2635 $seen_libobjs = 1;
2636 }
2637 }
2638 else
2639 {
2640 &define_variable ($xlib . "_LIBADD", '', $where);
2641 }
2643 reject_var ("${xlib}_LDADD",
2644 "use `${xlib}_LIBADD', not `${xlib}_LDADD'");
2647 my $linker = &handle_source_transform ($xlib, $onelib, $obj, $where,
2648 NONLIBTOOL => 0, LIBTOOL => 1);
2650 # Determine program to use for link.
2651 my $xlink;
2652 if (var ($xlib . '_LINK'))
2653 {
2654 $xlink = $xlib . '_LINK';
2655 }
2656 else
2657 {
2658 $xlink = $linker ? $linker : 'LINK';
2659 }
2661 my $rpathvar = "am_${xlib}_rpath";
2662 my $rpath = "\$($rpathvar)";
2663 foreach my $rcond ($instconds{$onelib}->conds)
2664 {
2665 my $val;
2666 if ($instdirs{$onelib}{$rcond} eq 'EXTRA'
2667 || $instdirs{$onelib}{$rcond} eq 'noinst'
2668 || $instdirs{$onelib}{$rcond} eq 'check')
2669 {
2670 # It's an EXTRA_ library, so we can't specify -rpath,
2671 # because we don't know where the library will end up.
2672 # The user probably knows, but generally speaking automake
2673 # doesn't -- and in fact configure could decide
2674 # dynamically between two different locations.
2675 $val = '';
2676 }
2677 else
2678 {
2679 $val = ('-rpath $(' . $instdirs{$onelib}{$rcond} . 'dir)');
2680 }
2681 if ($rcond->true)
2682 {
2683 # If $rcond is true there is only one condition and
2684 # there is no point defining an helper variable.
2685 $rpath = $val;
2686 }
2687 else
2688 {
2689 define_pretty_variable ($rpathvar, $rcond, INTERNAL, $val);
2690 }
2691 }
2693 # If the resulting library lies into a subdirectory,
2694 # make sure this directory will exist.
2695 my $dirstamp = require_build_directory_maybe ($onelib);
2697 # Remember to cleanup .libs/ in this directory.
2698 my $dirname = dirname $onelib;
2699 $libtool_clean_directories{$dirname} = 1;
2701 $output_rules .= &file_contents ('ltlibrary',
2702 $where,
2703 LTLIBRARY => $onelib,
2704 XLTLIBRARY => $xlib,
2705 RPATH => $rpath,
2706 XLINK => $xlink,
2707 DIRSTAMP => $dirstamp);
2708 if ($seen_libobjs)
2709 {
2710 if (var ($xlib . '_LIBADD'))
2711 {
2712 &check_libobjs_sources ($xlib, $xlib . '_LIBADD');
2713 }
2714 }
2715 }
2716 }
2718 # See if any _SOURCES variable were misspelled.
2719 sub check_typos ()
2720 {
2721 # It is ok if the user sets this particular variable.
2722 set_seen 'AM_LDFLAGS';
2724 foreach my $primary ('SOURCES', 'LIBADD', 'LDADD', 'LDFLAGS', 'DEPENDENCIES')
2725 {
2726 foreach my $var (variables $primary)
2727 {
2728 my $varname = $var->name;
2729 # A configure variable is always legitimate.
2730 next if exists $configure_vars{$varname};
2732 for my $cond ($var->conditions->conds)
2733 {
2734 $varname =~ /^(?:nobase_)?(?:dist_|nodist_)?(.*)_[[:alnum:]]+$/;
2735 msg_var ('syntax', $var, "variable `$varname' is defined but no"
2736 . " program or\nlibrary has `$1' as canonic name"
2737 . " (possible typo)")
2738 unless $var->rdef ($cond)->seen;
2739 }
2740 }
2741 }
2742 }
2745 # Handle scripts.
2746 sub handle_scripts
2747 {
2748 # NOTE we no longer automatically clean SCRIPTS, because it is
2749 # useful to sometimes distribute scripts verbatim. This happens
2750 # e.g. in Automake itself.
2751 &am_install_var ('-candist', 'scripts', 'SCRIPTS',
2752 'bin', 'sbin', 'libexec', 'pkgdata',
2753 'noinst', 'check');
2754 }
2759 ## ------------------------ ##
2760 ## Handling Texinfo files. ##
2761 ## ------------------------ ##
2763 # ($OUTFILE, $VFILE, @CLEAN_FILES)
2764 # &scan_texinfo_file ($FILENAME)
2765 # ------------------------------
2766 # $OUTFILE - name of the info file produced by $FILENAME.
2767 # $VFILE - name of the version.texi file used (undef if none).
2768 # @CLEAN_FILES - list of byproducts (indexes etc.)
2769 sub scan_texinfo_file ($)
2770 {
2771 my ($filename) = @_;
2773 # Some of the following extensions are always created, no matter
2774 # whether indexes are used or not. Other (like cps, fns, ... pgs)
2775 # are only created when they are used. We used to scan $FILENAME
2776 # for their use, but that is not enough: they could be used in
2777 # included files. We can't scan included files because we don't
2778 # know the include path. Therefore we always erase these files, no
2779 # matter whether they are used or not.
2780 #
2781 # (tmp is only created if an @macro is used and a certain e-TeX
2782 # feature is not available.)
2783 my %clean_suffixes =
2784 map { $_ => 1 } (qw(aux log toc tmp
2785 cp cps
2786 fn fns
2787 ky kys
2788 vr vrs
2789 tp tps
2790 pg pgs)); # grep 'new.*index' texinfo.tex
2792 my $texi = new Automake::XFile "< $filename";
2793 verb "reading $filename";
2795 my ($outfile, $vfile);
2796 while ($_ = $texi->getline)
2797 {
2798 if (/^\@setfilename +(\S+)/)
2799 {
2800 # Honor only the first @setfilename. (It's possible to have
2801 # more occurrences later if the manual shows examples of how
2802 # to use @setfilename...)
2803 next if $outfile;
2805 $outfile = $1;
2806 if ($outfile =~ /\.(.+)$/ && $1 ne 'info')
2807 {
2808 error ("$filename:$.",
2809 "output `$outfile' has unrecognized extension");
2810 return;
2811 }
2812 }
2813 # A "version.texi" file is actually any file whose name matches
2814 # "vers*.texi".
2815 elsif (/^\@include\s+(vers[^.]*\.texi)\s*$/)
2816 {
2817 $vfile = $1;
2818 }
2820 # Try to find new or unused indexes.
2822 # Creating a new category of index.
2823 elsif (/^\@def(code)?index (\w+)/)
2824 {
2825 $clean_suffixes{$2} = 1;
2826 $clean_suffixes{"$2s"} = 1;
2827 }
2829 # Merging an index into an another.
2830 elsif (/^\@syn(code)?index (\w+) (\w+)/)
2831 {
2832 delete $clean_suffixes{"$2s"};
2833 $clean_suffixes{"$3s"} = 1;
2834 }
2836 }
2838 if (! $outfile)
2839 {
2840 err_am "`$filename' missing \@setfilename";
2841 return;
2842 }
2844 my $infobase = basename ($filename);
2845 $infobase =~ s/\.te?xi(nfo)?$//;
2846 return ($outfile, $vfile,
2847 map { "$infobase.$_" } (sort keys %clean_suffixes));
2848 }
2851 # ($DIRSTAMP, @CLEAN_FILES)
2852 # output_texinfo_build_rules ($SOURCE, $DEST, $INSRC, @DEPENDENCIES)
2853 # ------------------------------------------------------------------
2854 # SOURCE - the source Texinfo file
2855 # DEST - the destination Info file
2856 # INSRC - wether DEST should be built in the source tree
2857 # DEPENDENCIES - known dependencies
2858 sub output_texinfo_build_rules ($$$@)
2859 {
2860 my ($source, $dest, $insrc, @deps) = @_;
2862 # Split `a.texi' into `a' and `.texi'.
2863 my ($spfx, $ssfx) = ($source =~ /^(.*?)(\.[^.]*)?$/);
2864 my ($dpfx, $dsfx) = ($dest =~ /^(.*?)(\.[^.]*)?$/);
2866 $ssfx ||= "";
2867 $dsfx ||= "";
2869 # We can output two kinds of rules: the "generic" rules use Make
2870 # suffix rules and are appropriate when $source and $dest do not lie
2871 # in a sub-directory; the "specific" rules are needed in the other
2872 # case.
2873 #
2874 # The former are output only once (this is not really apparent here,
2875 # but just remember that some logic deeper in Automake will not
2876 # output the same rule twice); while the later need to be output for
2877 # each Texinfo source.
2878 my $generic;
2879 my $makeinfoflags;
2880 my $sdir = dirname $source;
2881 if ($sdir eq '.' && dirname ($dest) eq '.')
2882 {
2883 $generic = 1;
2884 $makeinfoflags = '-I $(srcdir)';
2885 }
2886 else
2887 {
2888 $generic = 0;
2889 $makeinfoflags = "-I $sdir -I \$(srcdir)/$sdir";
2890 }
2892 # A directory can contain two kinds of info files: some built in the
2893 # source tree, and some built in the build tree. The rules are
2894 # different in each case. However we cannot output two different
2895 # set of generic rules. Because in-source builds are more usual, we
2896 # use generic rules in this case and fall back to "specific" rules
2897 # for build-dir builds. (It should not be a problem to invert this
2898 # if needed.)
2899 $generic = 0 unless $insrc;
2901 # We cannot use a suffix rule to build info files with an empty
2902 # extension. Otherwise we would output a single suffix inference
2903 # rule, with separate dependencies, as in
2904 #
2905 # .texi:
2906 # $(MAKEINFO) ...
2907 # foo.info: foo.texi
2908 #
2909 # which confuse Solaris make. (See the Autoconf manual for
2910 # details.) Therefore we use a specific rule in this case. This
2911 # applies to info files only (dvi and pdf files always have an
2912 # extension).
2913 my $generic_info = ($generic && $dsfx) ? 1 : 0;
2915 # If the resulting file lie into a subdirectory,
2916 # make sure this directory will exist.
2917 my $dirstamp = require_build_directory_maybe ($dest);
2919 my $dipfx = ($insrc ? '$(srcdir)/' : '') . $dpfx;
2921 $output_rules .= file_contents ('texibuild',
2922 new Automake::Location,
2923 DEPS => "@deps",
2924 DEST_PREFIX => $dpfx,
2925 DEST_INFO_PREFIX => $dipfx,
2926 DEST_SUFFIX => $dsfx,
2927 DIRSTAMP => $dirstamp,
2928 GENERIC => $generic,
2929 GENERIC_INFO => $generic_info,
2930 INSRC => $insrc,
2931 MAKEINFOFLAGS => $makeinfoflags,
2932 SOURCE => ($generic
2933 ? '$<' : $source),
2934 SOURCE_INFO => ($generic_info
2935 ? '$<' : $source),
2936 SOURCE_REAL => $source,
2937 SOURCE_SUFFIX => $ssfx,
2938 );
2939 return ($dirstamp, "$dpfx.dvi", "$dpfx.pdf", "$dpfx.ps", "$dpfx.html");
2940 }
2943 # $TEXICLEANS
2944 # handle_texinfo_helper ($info_texinfos)
2945 # --------------------------------------
2946 # Handle all Texinfo source; helper for handle_texinfo.
2947 sub handle_texinfo_helper ($)
2948 {
2949 my ($info_texinfos) = @_;
2950 my (@infobase, @info_deps_list, @texi_deps);
2951 my %versions;
2952 my $done = 0;
2953 my @texi_cleans;
2955 # Build a regex matching user-cleaned files.
2956 my $d = var 'DISTCLEANFILES';
2957 my $c = var 'CLEANFILES';
2958 my @f = ();
2959 push @f, $d->value_as_list_recursive (inner_expand => 1) if $d;
2960 push @f, $c->value_as_list_recursive (inner_expand => 1) if $c;
2961 @f = map { s|[^A-Za-z_0-9*\[\]\-]|\\$&|g; s|\*|[^/]*|g; $_; } @f;
2962 my $user_cleaned_files = '^(?:' . join ('|', @f) . ')$';
2964 foreach my $texi
2965 ($info_texinfos->value_as_list_recursive (inner_expand => 1))
2966 {
2967 my $infobase = $texi;
2968 $infobase =~ s/\.(txi|texinfo|texi)$//;
2970 if ($infobase eq $texi)
2971 {
2972 # FIXME: report line number.
2973 err_am "texinfo file `$texi' has unrecognized extension";
2974 next;
2975 }
2977 push @infobase, $infobase;
2979 # If 'version.texi' is referenced by input file, then include
2980 # automatic versioning capability.
2981 my ($out_file, $vtexi, @clean_files) =
2982 scan_texinfo_file ("$relative_dir/$texi")
2983 or next;
2984 push (@texi_cleans, @clean_files);
2986 # If the Texinfo source is in a subdirectory, create the
2987 # resulting info in this subdirectory. If it is in the current
2988 # directory, try hard to not prefix "./" because it breaks the
2989 # generic rules.
2990 my $outdir = dirname ($texi) . '/';
2991 $outdir = "" if $outdir eq './';
2992 $out_file = $outdir . $out_file;
2994 # Until Automake 1.6.3, .info files were built in the
2995 # source tree. This was an obstacle to the support of
2996 # non-distributed .info files, and non-distributed .texi
2997 # files.
2998 #
2999 # * Non-distributed .texi files is important in some packages
3000 # where .texi files are built at make time, probably using
3001 # other binaries built in the package itself, maybe using
3002 # tools or information found on the build host. Because
3003 # these files are not distributed they are always rebuilt
3004 # at make time; they should therefore not lie in the source
3005 # directory. One plan was to support this using
3006 # nodist_info_TEXINFOS or something similar. (Doing this
3007 # requires some sanity checks. For instance Automake should
3008 # not allow:
3009 # dist_info_TEXINFO = foo.texi
3010 # nodist_foo_TEXINFO = included.texi
3011 # because a distributed file should never depend on a
3012 # non-distributed file.)
3013 #
3014 # * If .texi files are not distributed, then .info files should
3015 # not be distributed either. There are also cases where one
3016 # want to distribute .texi files, but do not want to
3017 # distribute the .info files. For instance the Texinfo package
3018 # distributes the tool used to build these files; it would
3019 # be a waste of space to distribute them. It's not clear
3020 # which syntax we should use to indicate that .info files should
3021 # not be distributed. Akim Demaille suggested that eventually
3022 # we switch to a new syntax:
3023 # | Maybe we should take some inspiration from what's already
3024 # | done in the rest of Automake. Maybe there is too much
3025 # | syntactic sugar here, and you want
3026 # | nodist_INFO = bar.info
3027 # | dist_bar_info_SOURCES = bar.texi
3028 # | bar_texi_DEPENDENCIES = foo.texi
3029 # | with a bit of magic to have bar.info represent the whole
3030 # | bar*info set. That's a lot more verbose that the current
3031 # | situation, but it is # not new, hence the user has less
3032 # | to learn.
3033 # |
3034 # | But there is still too much room for meaningless specs:
3035 # | nodist_INFO = bar.info
3036 # | dist_bar_info_SOURCES = bar.texi
3037 # | dist_PS = bar.ps something-written-by-hand.ps
3038 # | nodist_bar_ps_SOURCES = bar.texi
3039 # | bar_texi_DEPENDENCIES = foo.texi
3040 # | here bar.texi is dist_ in line 2, and nodist_ in 4.
3041 #
3042 # Back to the point, it should be clear that in order to support
3043 # non-distributed .info files, we need to build them in the
3044 # build tree, not in the source tree (non-distributed .texi
3045 # files are less of a problem, because we do not output build
3046 # rules for them). In Automake 1.7 .info build rules have been
3047 # largely cleaned up so that .info files get always build in the
3048 # build tree, even when distributed. The idea was that
3049 # (1) if during a VPATH build the .info file was found to be
3050 # absent or out-of-date (in the source tree or in the
3051 # build tree), Make would rebuild it in the build tree.
3052 # If an up-to-date source-tree of the .info file existed,
3053 # make would not rebuild it in the build tree.
3054 # (2) having two copies of .info files, one in the source tree
3055 # and one (newer) in the build tree is not a problem
3056 # because `make dist' always pick files in the build tree
3057 # first.
3058 # However it turned out the be a bad idea for several reasons:
3059 # * Tru64, OpenBSD, and FreeBSD (not NetBSD) Make do not behave
3060 # like GNU Make on point (1) above. These implementations
3061 # of Make would always rebuild .info files in the build
3062 # tree, even if such files were up to date in the source
3063 # tree. Consequently, it was impossible to perform a VPATH
3064 # build of a package containing Texinfo files using these
3065 # Make implementations.
3066 # (Refer to the Autoconf Manual, section "Limitation of
3067 # Make", paragraph "VPATH", item "target lookup", for
3068 # an account of the differences between these
3069 # implementations.)
3070 # * The GNU Coding Standards require these files to be built
3071 # in the source-tree (when they are distributed, that is).
3072 # * Keeping a fresher copy of distributed files in the
3073 # build tree can be annoying during development because
3074 # - if the files is kept under CVS, you really want it
3075 # to be updated in the source tree
3076 # - it is confusing that `make distclean' does not erase
3077 # all files in the build tree.
3078 #
3079 # Consequently, starting with Automake 1.8, .info files are
3080 # built in the source tree again. Because we still plan to
3081 # support non-distributed .info files at some point, we
3082 # have a single variable ($INSRC) that controls whether
3083 # the current .info file must be built in the source tree
3084 # or in the build tree. Actually this variable is switched
3085 # off for .info files that appear to be cleaned; this is
3086 # for backward compatibility with package such as Texinfo,
3087 # which do things like
3088 # info_TEXINFOS = texinfo.txi info-stnd.texi info.texi
3089 # DISTCLEANFILES = texinfo texinfo-* info*.info*
3090 # # Do not create info files for distribution.
3091 # dist-info:
3092 # in order not to distribute .info files.
3093 my $insrc = ($out_file =~ $user_cleaned_files) ? 0 : 1;
3095 my $soutdir = '$(srcdir)/' . $outdir;
3096 $outdir = $soutdir if $insrc;
3098 # If user specified file_TEXINFOS, then use that as explicit
3099 # dependency list.
3100 @texi_deps = ();
3101 push (@texi_deps, "$soutdir$vtexi") if $vtexi;
3103 my $canonical = canonicalize ($infobase);
3104 if (var ($canonical . "_TEXINFOS"))
3105 {
3106 push (@texi_deps, '$(' . $canonical . '_TEXINFOS)');
3107 push_dist_common ('$(' . $canonical . '_TEXINFOS)');
3108 }
3110 my ($dirstamp, @cfiles) =
3111 output_texinfo_build_rules ($texi, $out_file, $insrc, @texi_deps);
3112 push (@texi_cleans, @cfiles);
3114 push (@info_deps_list, $out_file);
3116 # If a vers*.texi file is needed, emit the rule.
3117 if ($vtexi)
3118 {
3119 err_am ("`$vtexi', included in `$texi', "
3120 . "also included in `$versions{$vtexi}'")
3121 if defined $versions{$vtexi};
3122 $versions{$vtexi} = $texi;
3124 # We number the stamp-vti files. This is doable since the
3125 # actual names don't matter much. We only number starting
3126 # with the second one, so that the common case looks nice.
3127 my $vti = ($done ? $done : 'vti');
3128 ++$done;
3130 # This is ugly, but it is our historical practice.
3131 if ($config_aux_dir_set_in_configure_ac)
3132 {
3133 require_conf_file_with_macro (TRUE, 'info_TEXINFOS', FOREIGN,
3134 'mdate-sh');
3135 }
3136 else
3137 {
3138 require_file_with_macro (TRUE, 'info_TEXINFOS',
3139 FOREIGN, 'mdate-sh');
3140 }
3142 my $conf_dir;
3143 if ($config_aux_dir_set_in_configure_ac)
3144 {
3145 $conf_dir = "$am_config_aux_dir/";
3146 }
3147 else
3148 {
3149 $conf_dir = '$(srcdir)/';
3150 }
3151 $output_rules .= file_contents ('texi-vers',
3152 new Automake::Location,
3153 TEXI => $texi,
3154 VTI => $vti,
3155 STAMPVTI => "${soutdir}stamp-$vti",
3156 VTEXI => "$soutdir$vtexi",
3157 MDDIR => $conf_dir,
3158 DIRSTAMP => $dirstamp);
3159 }
3160 }
3162 # Handle location of texinfo.tex.
3163 my $need_texi_file = 0;
3164 my $texinfodir;
3165 if (var ('TEXINFO_TEX'))
3166 {
3167 # The user defined TEXINFO_TEX so assume he knows what he is
3168 # doing.
3169 $texinfodir = ('$(srcdir)/'
3170 . dirname (variable_value ('TEXINFO_TEX')));
3171 }
3172 elsif (option 'cygnus')
3173 {
3174 $texinfodir = '$(top_srcdir)/../texinfo';
3175 define_variable ('TEXINFO_TEX', "$texinfodir/texinfo.tex", INTERNAL);
3176 }
3177 elsif ($config_aux_dir_set_in_configure_ac)
3178 {
3179 $texinfodir = $am_config_aux_dir;
3180 define_variable ('TEXINFO_TEX', "$texinfodir/texinfo.tex", INTERNAL);
3181 $need_texi_file = 2; # so that we require_conf_file later
3182 }
3183 else
3184 {
3185 $texinfodir = '$(srcdir)';
3186 $need_texi_file = 1;
3187 }
3188 define_variable ('am__TEXINFO_TEX_DIR', $texinfodir, INTERNAL);
3190 push (@dist_targets, 'dist-info');
3192 if (! option 'no-installinfo')
3193 {
3194 # Make sure documentation is made and installed first. Use
3195 # $(INFO_DEPS), not 'info', because otherwise recursive makes
3196 # get run twice during "make all".
3197 unshift (@all, '$(INFO_DEPS)');
3198 }
3200 define_files_variable ("DVIS", @infobase, 'dvi', INTERNAL);
3201 define_files_variable ("PDFS", @infobase, 'pdf', INTERNAL);
3202 define_files_variable ("PSS", @infobase, 'ps', INTERNAL);
3203 define_files_variable ("HTMLS", @infobase, 'html', INTERNAL);
3205 # This next isn't strictly needed now -- the places that look here
3206 # could easily be changed to look in info_TEXINFOS. But this is
3207 # probably better, in case noinst_TEXINFOS is ever supported.
3208 define_variable ("TEXINFOS", variable_value ('info_TEXINFOS'), INTERNAL);
3210 # Do some error checking. Note that this file is not required
3211 # when in Cygnus mode; instead we defined TEXINFO_TEX explicitly
3212 # up above.
3213 if ($need_texi_file && ! option 'no-texinfo.tex')
3214 {
3215 if ($need_texi_file > 1)
3216 {
3217 require_conf_file_with_macro (TRUE, 'info_TEXINFOS', FOREIGN,
3218 'texinfo.tex');
3219 }
3220 else
3221 {
3222 require_file_with_macro (TRUE, 'info_TEXINFOS', FOREIGN,
3223 'texinfo.tex');
3224 }
3225 }
3227 return makefile_wrap ("", "\t ", @texi_cleans);
3228 }
3231 # handle_texinfo ()
3232 # -----------------
3233 # Handle all Texinfo source.
3234 sub handle_texinfo ()
3235 {
3236 reject_var 'TEXINFOS', "`TEXINFOS' is an anachronism; use `info_TEXINFOS'";
3237 # FIXME: I think this is an obsolete future feature name.
3238 reject_var 'html_TEXINFOS', "HTML generation not yet supported";
3240 my $info_texinfos = var ('info_TEXINFOS');
3241 my $texiclean = "";
3242 if ($info_texinfos)
3243 {
3244 $texiclean = handle_texinfo_helper ($info_texinfos);
3245 }
3246 $output_rules .= file_contents ('texinfos',
3247 new Automake::Location,
3248 TEXICLEAN => $texiclean,
3249 'LOCAL-TEXIS' => !!$info_texinfos);
3250 }
3253 # Handle any man pages.
3254 sub handle_man_pages
3255 {
3256 reject_var 'MANS', "`MANS' is an anachronism; use `man_MANS'";
3258 # Find all the sections in use. We do this by first looking for
3259 # "standard" sections, and then looking for any additional
3260 # sections used in man_MANS.
3261 my (%sections, %vlist);
3262 # We handle nodist_ for uniformity. man pages aren't distributed
3263 # by default so it isn't actually very important.
3264 foreach my $pfx ('', 'dist_', 'nodist_')
3265 {
3266 # Add more sections as needed.
3267 foreach my $section ('0'..'9', 'n', 'l')
3268 {
3269 my $varname = $pfx . 'man' . $section . '_MANS';
3270 if (var ($varname))
3271 {
3272 $sections{$section} = 1;
3273 $varname = '$(' . $varname . ')';
3274 $vlist{$varname} = 1;
3276 &push_dist_common ($varname)
3277 if $pfx eq 'dist_';
3278 }
3279 }
3281 my $varname = $pfx . 'man_MANS';
3282 my $var = var ($varname);
3283 if ($var)
3284 {
3285 foreach ($var->value_as_list_recursive)
3286 {
3287 # A page like `foo.1c' goes into man1dir.
3288 if (/\.([0-9a-z])([a-z]*)$/)
3289 {
3290 $sections{$1} = 1;
3291 }
3292 }
3294 $varname = '$(' . $varname . ')';
3295 $vlist{$varname} = 1;
3296 &push_dist_common ($varname)
3297 if $pfx eq 'dist_';
3298 }
3299 }
3301 return unless %sections;
3303 # Now for each section, generate an install and uninstall rule.
3304 # Sort sections so output is deterministic.
3305 foreach my $section (sort keys %sections)
3306 {
3307 $output_rules .= &file_contents ('mans',
3308 new Automake::Location,
3309 SECTION => $section);
3310 }
3312 my @mans = sort keys %vlist;
3313 $output_vars .= file_contents ('mans-vars',
3314 new Automake::Location,
3315 MANS => "@mans");
3317 push (@all, '$(MANS)')
3318 unless option 'no-installman';
3319 }
3321 # Handle DATA variables.
3322 sub handle_data
3323 {
3324 &am_install_var ('-noextra', '-candist', 'data', 'DATA',
3325 'data', 'sysconf', 'sharedstate', 'localstate',
3326 'pkgdata', 'lisp', 'noinst', 'check');
3327 }
3329 # Handle TAGS.
3330 sub handle_tags
3331 {
3332 my @tag_deps = ();
3333 my @ctag_deps = ();
3334 if (var ('SUBDIRS'))
3335 {
3336 $output_rules .= ("tags-recursive:\n"
3337 . "\tlist=\'\$(SUBDIRS)\'; for subdir in \$\$list; do \\\n"
3338 # Never fail here if a subdir fails; it
3339 # isn't important.
3340 . "\t test \"\$\$subdir\" = . || (cd \$\$subdir"
3341 . " && \$(MAKE) \$(AM_MAKEFLAGS) tags); \\\n"
3342 . "\tdone\n");
3343 push (@tag_deps, 'tags-recursive');
3344 &depend ('.PHONY', 'tags-recursive');
3346 $output_rules .= ("ctags-recursive:\n"
3347 . "\tlist=\'\$(SUBDIRS)\'; for subdir in \$\$list; do \\\n"
3348 # Never fail here if a subdir fails; it
3349 # isn't important.
3350 . "\t test \"\$\$subdir\" = . || (cd \$\$subdir"
3351 . " && \$(MAKE) \$(AM_MAKEFLAGS) ctags); \\\n"
3352 . "\tdone\n");
3353 push (@ctag_deps, 'ctags-recursive');
3354 &depend ('.PHONY', 'ctags-recursive');
3355 }
3357 if (&saw_sources_p (1)
3358 || var ('ETAGS_ARGS')
3359 || @tag_deps)
3360 {
3361 my @config;
3362 foreach my $spec (@config_headers)
3363 {
3364 my ($out, @ins) = split_config_file_spec ($spec);
3365 foreach my $in (@ins)
3366 {
3367 # If the config header source is in this directory,
3368 # require it.
3369 push @config, basename ($in)
3370 if $relative_dir eq dirname ($in);
3371 }
3372 }
3373 $output_rules .= &file_contents ('tags',
3374 new Automake::Location,
3375 CONFIG => "@config",
3376 TAGSDIRS => "@tag_deps",
3377 CTAGSDIRS => "@ctag_deps");
3379 set_seen 'TAGS_DEPENDENCIES';
3380 }
3381 elsif (reject_var ('TAGS_DEPENDENCIES',
3382 "doesn't make sense to define `TAGS_DEPENDENCIES'"
3383 . "without\nsources or `ETAGS_ARGS'"))
3384 {
3385 }
3386 else
3387 {
3388 # Every Makefile must define some sort of TAGS rule.
3389 # Otherwise, it would be possible for a top-level "make TAGS"
3390 # to fail because some subdirectory failed.
3391 $output_rules .= "tags: TAGS\nTAGS:\n\n";
3392 # Ditto ctags.
3393 $output_rules .= "ctags: CTAGS\nCTAGS:\n\n";
3394 }
3395 }
3397 # Handle multilib support.
3398 sub handle_multilib
3399 {
3400 if ($seen_multilib && $relative_dir eq '.')
3401 {
3402 $output_rules .= &file_contents ('multilib', new Automake::Location);
3403 push (@all, 'all-multi');
3404 }
3405 }
3408 # user_phony_rule ($NAME)
3409 # -----------------------
3410 # Return false if rule $NAME does not exist. Otherwise,
3411 # declare it as phony, complete its definition (in case it is
3412 # conditional), and return its Automake::Rule instance.
3413 sub user_phony_rule ($)
3414 {
3415 my ($name) = @_;
3416 my $rule = rule $name;
3417 if ($rule)
3418 {
3419 depend ('.PHONY', $name);
3420 # Define $NAME in all condition where it is not already defined,
3421 # so that it is always OK to depend on $NAME.
3422 for my $c ($rule->not_always_defined_in_cond (TRUE)->conds)
3423 {
3424 Automake::Rule::define ($name, 'internal', RULE_AUTOMAKE,
3425 $c, INTERNAL);
3426 $output_rules .= $c->subst_string . "$name:\n";
3427 }
3428 }
3429 return $rule;
3430 }
3433 # $BOOLEAN
3434 # &for_dist_common ($A, $B)
3435 # -------------------------
3436 # Subroutine for &handle_dist: sort files to dist.
3437 #
3438 # We put README first because it then becomes easier to make a
3439 # Usenet-compliant shar file (in these, README must be first).
3440 #
3441 # FIXME: do more ordering of files here.
3442 sub for_dist_common
3443 {
3444 return 0
3445 if $a eq $b;
3446 return -1
3447 if $a eq 'README';
3448 return 1
3449 if $b eq 'README';
3450 return $a cmp $b;
3451 }
3454 # handle_dist
3455 # -----------
3456 # Handle 'dist' target.
3457 sub handle_dist ()
3458 {
3459 # Substutions for distdit.am
3460 my %transform;
3462 # Define DIST_SUBDIRS. This must always be done, regardless of the
3463 # no-dist setting: target like `distclean' or `maintainer-clean' use it.
3464 my $subdirs = var ('SUBDIRS');
3465 if ($subdirs)
3466 {
3467 # If SUBDIRS is conditionally defined, then set DIST_SUBDIRS
3468 # to all possible directories, and use it. If DIST_SUBDIRS is
3469 # defined, just use it.
3471 # Note that we check DIST_SUBDIRS first on purpose, so that
3472 # we don't call has_conditional_contents for now reason.
3473 # (In the past one project used so many conditional subdirectories
3474 # that calling has_conditional_contents on SUBDIRS caused
3475 # automake to grow to 150Mb -- this should not happen with
3476 # the current implementation of has_conditional_contents,
3477 # but it's more efficient to avoid the call anyway.)
3478 if (var ('DIST_SUBDIRS'))
3479 {
3480 }
3481 elsif ($subdirs->has_conditional_contents)
3482 {
3483 define_pretty_variable
3484 ('DIST_SUBDIRS', TRUE, INTERNAL,
3485 uniq ($subdirs->value_as_list_recursive));
3486 }
3487 else
3488 {
3489 # We always define this because that is what `distclean'
3490 # wants.
3491 define_pretty_variable ('DIST_SUBDIRS', TRUE, INTERNAL,
3492 '$(SUBDIRS)');
3493 }
3494 }
3496 # The remaining definitions are only required when a dist target is used.
3497 return if option 'no-dist';
3499 # At least one of the archive formats must be enabled.
3500 if ($relative_dir eq '.')
3501 {
3502 my $archive_defined = option 'no-dist-gzip' ? 0 : 1;
3503 $archive_defined ||=
3504 grep { option "dist-$_" } ('shar', 'zip', 'tarZ', 'bzip2');
3505 error (option 'no-dist-gzip',
3506 "no-dist-gzip specified but no dist-* specified, "
3507 . "at least one archive format must be enabled")
3508 unless $archive_defined;
3509 }
3511 # Look for common files that should be included in distribution.
3512 # If the aux dir is set, and it does not have a Makefile.am, then
3513 # we check for these files there as well.
3514 my $check_aux = 0;
3515 if ($relative_dir eq '.'
3516 && $config_aux_dir_set_in_configure_ac)
3517 {
3518 if (! &is_make_dir ($config_aux_dir))
3519 {
3520 $check_aux = 1;
3521 }
3522 }
3523 foreach my $cfile (@common_files)
3524 {
3525 if (dir_has_case_matching_file ($relative_dir, $cfile)
3526 # The file might be absent, but if it can be built it's ok.
3527 || rule $cfile)
3528 {
3529 &push_dist_common ($cfile);
3530 }
3532 # Don't use `elsif' here because a file might meaningfully
3533 # appear in both directories.
3534 if ($check_aux && dir_has_case_matching_file ($config_aux_dir, $cfile))
3535 {
3536 &push_dist_common ("$config_aux_dir/$cfile")
3537 }
3538 }
3540 # We might copy elements from $configure_dist_common to
3541 # %dist_common if we think we need to. If the file appears in our
3542 # directory, we would have discovered it already, so we don't
3543 # check that. But if the file is in a subdir without a Makefile,
3544 # we want to distribute it here if we are doing `.'. Ugly!
3545 if ($relative_dir eq '.')
3546 {
3547 foreach my $file (split (' ' , $configure_dist_common))
3548 {
3549 push_dist_common ($file)
3550 unless is_make_dir (dirname ($file));
3551 }
3552 }
3554 # Files to distributed. Don't use ->value_as_list_recursive
3555 # as it recursively expands `$(dist_pkgdata_DATA)' etc.
3556 my @dist_common = split (' ', rvar ('DIST_COMMON')->variable_value);
3557 @dist_common = uniq (sort for_dist_common (@dist_common));
3558 variable_delete 'DIST_COMMON';
3559 define_pretty_variable ('DIST_COMMON', TRUE, INTERNAL, @dist_common);
3561 # Now that we've processed DIST_COMMON, disallow further attempts
3562 # to set it.
3563 $handle_dist_run = 1;
3565 # Scan EXTRA_DIST to see if we need to distribute anything from a
3566 # subdir. If so, add it to the list. I didn't want to do this
3567 # originally, but there were so many requests that I finally
3568 # relented.
3569 my $extra_dist = var ('EXTRA_DIST');
3570 if ($extra_dist)
3571 {
3572 # FIXME: This should be fixed to work with conditions. That
3573 # will require only making the entries in %dist_dirs under the
3574 # appropriate condition. This is meaningful if the nature of
3575 # the distribution should depend upon the configure options
3576 # used.
3577 foreach ($extra_dist->value_as_list_recursive (skip_ac_subst => 1))
3578 {
3579 next unless s,/+[^/]+$,,;
3580 $dist_dirs{$_} = 1
3581 unless $_ eq '.';
3582 }
3583 }
3585 # We have to check DIST_COMMON for extra directories in case the
3586 # user put a source used in AC_OUTPUT into a subdir.
3587 my $topsrcdir = backname ($relative_dir);
3588 foreach (rvar ('DIST_COMMON')->value_as_list_recursive (skip_ac_subst => 1))
3589 {
3590 s/\$\(top_srcdir\)/$topsrcdir/;
3591 s/\$\(srcdir\)/./;
3592 # Strip any leading `./'.
3593 s,^(:?\./+)*,,;
3594 next unless s,/+[^/]+$,,;
3595 $dist_dirs{$_} = 1
3596 unless $_ eq '.';
3597 }
3599 $transform{'DISTCHECK-HOOK'} = !! rule 'distcheck-hook';
3600 $transform{'GETTEXT'} = $seen_gettext && !$seen_gettext_external;
3602 # Prepend $(distdir) to each directory given.
3603 my %rewritten = map { '$(distdir)/' . "$_" => 1 } keys %dist_dirs;
3604 $transform{'DISTDIRS'} = join (' ', sort keys %rewritten);
3606 # If the target `dist-hook' exists, make sure it is run. This
3607 # allows users to do random weird things to the distribution
3608 # before it is packaged up.
3609 push (@dist_targets, 'dist-hook')
3610 if user_phony_rule 'dist-hook';
3611 $transform{'DIST-TARGETS'} = join (' ', @dist_targets);
3613 my $flm = option ('filename-length-max');
3614 my $filename_filter = $flm ? '.' x $flm->[1] : '';
3616 $output_rules .= &file_contents ('distdir',
3617 new Automake::Location,
3618 %transform,
3619 FILENAME_FILTER => $filename_filter);
3620 }
3623 # check_directory ($NAME, $WHERE)
3624 # -------------------------------
3625 # Ensure $NAME is a directory, and that it uses sane name.
3626 # Use $WHERE as a location in the diagnostic, if any.
3627 sub check_directory ($$)
3628 {
3629 my ($dir, $where) = @_;
3631 error $where, "required directory $relative_dir/$dir does not exist"
3632 unless -d "$relative_dir/$dir";
3634 # If an `obj/' directory exists, BSD make will enter it before
3635 # reading `Makefile'. Hence the `Makefile' in the current directory
3636 # will not be read.
3637 #
3638 # % cat Makefile
3639 # all:
3640 # echo Hello
3641 # % cat obj/Makefile
3642 # all:
3643 # echo World
3644 # % make # GNU make
3645 # echo Hello
3646 # Hello
3647 # % pmake # BSD make
3648 # echo World
3649 # World
3650 msg ('portability', $where,
3651 "naming a subdirectory `obj' causes troubles with BSD make")
3652 if $dir eq 'obj';
3654 # `aux' is probably the most important of the following forbidden name,
3655 # since it's tempting to use it as an AC_CONFIG_AUX_DIR.
3656 msg ('portability', $where,
3657 "name `$dir' is reserved on W32 and DOS platforms")
3658 if grep (/^\Q$dir\E$/i, qw/aux lpt1 lpt2 lpt3 com1 com2 com3 com4 con prn/);
3659 }
3661 # check_directories_in_var ($VARIABLE)
3662 # ------------------------------------
3663 # Recursively check all items in variables $VARIABLE as directories
3664 sub check_directories_in_var ($)
3665 {
3666 my ($var) = @_;
3667 $var->traverse_recursively
3668 (sub
3669 {
3670 my ($var, $val, $cond, $full_cond) = @_;
3671 check_directory ($val, $var->rdef ($cond)->location);
3672 return ();
3673 },
3674 undef,
3675 skip_ac_subst => 1);
3676 }
3678 # &handle_subdirs ()
3679 # ------------------
3680 # Handle subdirectories.
3681 sub handle_subdirs ()
3682 {
3683 my $subdirs = var ('SUBDIRS');
3684 return
3685 unless $subdirs;
3687 check_directories_in_var $subdirs;
3689 my $dsubdirs = var ('DIST_SUBDIRS');
3690 check_directories_in_var $dsubdirs
3691 if $dsubdirs;
3693 $output_rules .= &file_contents ('subdirs', new Automake::Location);
3694 rvar ('RECURSIVE_TARGETS')->rdef (TRUE)->{'pretty'} = VAR_SORTED; # Gross!
3695 }
3698 # ($REGEN, @DEPENDENCIES)
3699 # &scan_aclocal_m4
3700 # ----------------
3701 # If aclocal.m4 creation is automated, return the list of its dependencies.
3702 sub scan_aclocal_m4 ()
3703 {
3704 my $regen_aclocal = 0;
3706 set_seen 'CONFIG_STATUS_DEPENDENCIES';
3707 set_seen 'CONFIGURE_DEPENDENCIES';
3709 if (-f 'aclocal.m4')
3710 {
3711 &define_variable ("ACLOCAL_M4", '$(top_srcdir)/aclocal.m4', INTERNAL);
3713 my $aclocal = new Automake::XFile "< aclocal.m4";
3714 my $line = $aclocal->getline;
3715 $regen_aclocal = $line =~ 'generated automatically by aclocal';
3716 }
3718 my @ac_deps = ();
3720 if (set_seen ('ACLOCAL_M4_SOURCES'))
3721 {
3722 push (@ac_deps, '$(ACLOCAL_M4_SOURCES)');
3723 msg_var ('obsolete', 'ACLOCAL_M4_SOURCES',
3724 "`ACLOCAL_M4_SOURCES' is obsolete.\n"
3725 . "It should be safe to simply remove it.");
3726 }
3728 # Note that it might be possible that aclocal.m4 doesn't exist but
3729 # should be auto-generated. This case probably isn't very
3730 # important.
3732 return ($regen_aclocal, @ac_deps);
3733 }
3736 # @DEPENDENCIES
3737 # &prepend_srcdir (@INPUTS)
3738 # -------------------------
3739 # Prepend $(srcdir) or $(top_srcdir) to all @INPUTS. The idea is that
3740 # if an input file has a directory part the same as the current
3741 # directory, then the directory part is simply replaced by $(srcdir).
3742 # But if the directory part is different, then $(top_srcdir) is
3743 # prepended.
3744 sub prepend_srcdir (@)
3745 {
3746 my (@inputs) = @_;
3747 my @newinputs;
3749 foreach my $single (@inputs)
3750 {
3751 if (dirname ($single) eq $relative_dir)
3752 {
3753 push (@newinputs, '$(srcdir)/' . basename ($single));
3754 }
3755 else
3756 {
3757 push (@newinputs, '$(top_srcdir)/' . $single);
3758 }
3759 }
3760 return @newinputs;
3761 }
3763 # @DEPENDENCIES
3764 # rewrite_inputs_into_dependencies ($OUTPUT, @INPUTS)
3765 # ---------------------------------------------------
3766 # Compute a list of dependencies appropriate for the rebuild
3767 # rule of
3768 # AC_CONFIG_FILES($OUTPUT:$INPUT[0]:$INPUTS[1]:...)
3769 # Also distribute $INPUTs which are not build by another AC_CONFIG_FILES.
3770 sub rewrite_inputs_into_dependencies ($@)
3771 {
3772 my ($file, @inputs) = @_;
3773 my @res = ();
3775 for my $i (@inputs)
3776 {
3777 if (exists $ac_config_files_location{$i})
3778 {
3779 my $di = dirname $i;
3780 if ($di eq $relative_dir)
3781 {
3782 $i = basename $i;
3783 }
3784 # In the top-level Makefile we do not use $(top_builddir), because
3785 # we are already there, and since the targets are built without
3786 # a $(top_builddir), it helps BSD Make to match them with
3787 # dependencies.
3788 elsif ($relative_dir ne '.')
3789 {
3790 $i = '$(top_builddir)/' . $i;
3791 }
3792 }
3793 else
3794 {
3795 msg ('error', $ac_config_files_location{$file},
3796 "required file `$i' not found")
3797 unless exists $output_files{$i} || -f $i;
3798 ($i) = prepend_srcdir ($i);
3799 push_dist_common ($i);
3800 }
3801 push @res, $i;
3802 }
3803 return @res;
3804 }
3808 # &handle_configure ($MAKEFILE_AM, $MAKEFILE_IN, $MAKEFILE, @INPUTS)
3809 # ------------------------------------------------------------------
3810 # Handle remaking and configure stuff.
3811 # We need the name of the input file, to do proper remaking rules.
3812 sub handle_configure ($$$@)
3813 {
3814 my ($makefile_am, $makefile_in, $makefile, @inputs) = @_;
3816 prog_error 'empty @inputs'
3817 unless @inputs;
3819 my ($rel_makefile_am, $rel_makefile_in) = prepend_srcdir ($makefile_am,
3820 $makefile_in);
3821 my $rel_makefile = basename $makefile;
3823 my $colon_infile = ':' . join (':', @inputs);
3824 $colon_infile = '' if $colon_infile eq ":$makefile.in";
3825 my @rewritten = rewrite_inputs_into_dependencies ($makefile, @inputs);
3826 my ($regen_aclocal_m4, @aclocal_m4_deps) = scan_aclocal_m4;
3827 define_pretty_variable ('am__aclocal_m4_deps', TRUE, INTERNAL,
3828 @configure_deps, @aclocal_m4_deps,
3829 '$(top_srcdir)/' . $configure_ac);
3830 my @configuredeps = ('$(am__aclocal_m4_deps)', '$(CONFIGURE_DEPENDENCIES)');
3831 push @configuredeps, '$(ACLOCAL_M4)' if -f 'aclocal.m4';
3832 define_pretty_variable ('am__configure_deps', TRUE, INTERNAL,
3833 @configuredeps);
3835 $output_rules .= file_contents
3836 ('configure',
3837 new Automake::Location,
3838 MAKEFILE => $rel_makefile,
3839 'MAKEFILE-DEPS' => "@rewritten",
3840 'CONFIG-MAKEFILE' => ($relative_dir eq '.') ? '$@' : '$(subdir)/$@',
3841 'MAKEFILE-IN' => $rel_makefile_in,
3842 'MAKEFILE-IN-DEPS' => "@include_stack",
3843 'MAKEFILE-AM' => $rel_makefile_am,
3844 STRICTNESS => global_option 'cygnus'
3845 ? 'cygnus' : $strictness_name,
3846 'USE-DEPS' => global_option 'no-dependencies'
3847 ? ' --ignore-deps' : '',
3848 'MAKEFILE-AM-SOURCES' => "$makefile$colon_infile",
3849 'REGEN-ACLOCAL-M4' => $regen_aclocal_m4);
3851 if ($relative_dir eq '.')
3852 {
3853 &push_dist_common ('acconfig.h')
3854 if -f 'acconfig.h';
3855 }
3857 # If we have a configure header, require it.
3858 my $hdr_index = 0;
3859 my @distclean_config;
3860 foreach my $spec (@config_headers)
3861 {
3862 $hdr_index += 1;
3863 # $CONFIG_H_PATH: config.h from top level.
3864 my ($config_h_path, @ins) = split_config_file_spec ($spec);
3865 my $config_h_dir = dirname ($config_h_path);
3867 # If the header is in the current directory we want to build
3868 # the header here. Otherwise, if we're at the topmost
3869 # directory and the header's directory doesn't have a
3870 # Makefile, then we also want to build the header.
3871 if ($relative_dir eq $config_h_dir
3872 || ($relative_dir eq '.' && ! &is_make_dir ($config_h_dir)))
3873 {
3874 my ($cn_sans_dir, $stamp_dir);
3875 if ($relative_dir eq $config_h_dir)
3876 {
3877 $cn_sans_dir = basename ($config_h_path);
3878 $stamp_dir = '';
3879 }
3880 else
3881 {
3882 $cn_sans_dir = $config_h_path;
3883 if ($config_h_dir eq '.')
3884 {
3885 $stamp_dir = '';
3886 }
3887 else
3888 {
3889 $stamp_dir = $config_h_dir . '/';
3890 }
3891 }
3893 # This will also distribute all inputs.
3894 @ins = rewrite_inputs_into_dependencies ($config_h_path, @ins);
3896 # Header defined and in this directory.
3897 my @files;
3898 if (-f $config_h_path . '.top')
3899 {
3900 push (@files, "$cn_sans_dir.top");
3901 }
3902 if (-f $config_h_path . '.bot')
3903 {
3904 push (@files, "$cn_sans_dir.bot");
3905 }
3907 push_dist_common (@files);
3909 # For now, acconfig.h can only appear in the top srcdir.
3910 if (-f 'acconfig.h')
3911 {
3912 push (@files, '$(top_srcdir)/acconfig.h');
3913 }
3915 my $stamp = "${stamp_dir}stamp-h${hdr_index}";
3916 $output_rules .=
3917 file_contents ('remake-hdr',
3918 new Automake::Location,
3919 FILES => "@files",
3920 CONFIG_H => $cn_sans_dir,
3921 CONFIG_HIN => $ins[0],
3922 CONFIG_H_DEPS => "@ins",
3923 CONFIG_H_PATH => $config_h_path,
3924 STAMP => "$stamp");
3926 push @distclean_config, $cn_sans_dir, $stamp;
3927 }
3928 }
3930 $output_rules .= file_contents ('clean-hdr',
3931 new Automake::Location,
3932 FILES => "@distclean_config")
3933 if @distclean_config;
3935 # Distribute and define mkinstalldirs only if it is already present
3936 # in the package, for backward compatibility (some people may still
3937 # use $(mkinstalldirs)).
3938 my $mkidpath = "$config_aux_dir/mkinstalldirs";
3939 if (-f $mkidpath)
3940 {
3941 # Use require_file so that any existing script gets updated
3942 # by --force-missing.
3943 require_conf_file ($mkidpath, FOREIGN, 'mkinstalldirs');
3944 define_variable ('mkinstalldirs',
3945 "\$(SHELL) $am_config_aux_dir/mkinstalldirs", INTERNAL);
3946 }
3947 else
3948 {
3949 # Use $(install_sh), not $(mkdir_p) because the latter requires
3950 # at least one argument, and $(mkinstalldirs) used to work
3951 # even without arguments (e.g. $(mkinstalldirs) $(conditional_dir)).
3952 define_variable ('mkinstalldirs', '$(install_sh) -d', INTERNAL);
3953 }
3955 reject_var ('CONFIG_HEADER',
3956 "`CONFIG_HEADER' is an anachronism; now determined "
3957 . "automatically\nfrom `$configure_ac'");
3959 my @config_h;
3960 foreach my $spec (@config_headers)
3961 {
3962 my ($out, @ins) = split_config_file_spec ($spec);
3963 # Generate CONFIG_HEADER define.
3964 if ($relative_dir eq dirname ($out))
3965 {
3966 push @config_h, basename ($out);
3967 }
3968 else
3969 {
3970 push @config_h, "\$(top_builddir)/$out";
3971 }
3972 }
3973 define_variable ("CONFIG_HEADER", "@config_h", INTERNAL)
3974 if @config_h;
3976 # Now look for other files in this directory which must be remade
3977 # by config.status, and generate rules for them.
3978 my @actual_other_files = ();
3979 foreach my $lfile (@other_input_files)
3980 {
3981 my $file;
3982 my @inputs;
3983 if ($lfile =~ /^([^:]*):(.*)$/)
3984 {
3985 # This is the ":" syntax of AC_OUTPUT.
3986 $file = $1;
3987 @inputs = split (':', $2);
3988 }
3989 else
3990 {
3991 # Normal usage.
3992 $file = $lfile;
3993 @inputs = $file . '.in';
3994 }
3996 # Automake files should not be stored in here, but in %MAKE_LIST.
3997 prog_error ("$lfile in \@other_input_files\n"
3998 . "\@other_input_files = (@other_input_files)")
3999 if -f $file . '.am';
4001 my $local = basename ($file);
4003 # Make sure the dist directory for each input file is created.
4004 # We only have to do this at the topmost level though. This
4005 # is a bit ugly but it easier than spreading out the logic,
4006 # especially in cases like AC_OUTPUT(foo/out:bar/in), where
4007 # there is no Makefile in bar/.
4008 if ($relative_dir eq '.')
4009 {
4010 foreach (@inputs)
4011 {
4012 $dist_dirs{dirname ($_)} = 1;
4013 }
4014 }
4016 # We skip files that aren't in this directory. However, if
4017 # the file's directory does not have a Makefile, and we are
4018 # currently doing `.', then we create a rule to rebuild the
4019 # file in the subdir.
4020 my $fd = dirname ($file);
4021 if ($fd ne $relative_dir)
4022 {
4023 if ($relative_dir eq '.' && ! &is_make_dir ($fd))
4024 {
4025 $local = $file;
4026 }
4027 else
4028 {
4029 next;
4030 }
4031 }
4033 my @rewritten_inputs = rewrite_inputs_into_dependencies ($file, @inputs);
4035 $output_rules .= ($local . ': '
4036 . '$(top_builddir)/config.status '
4037 . "@rewritten_inputs\n"
4038 . "\t"
4039 . 'cd $(top_builddir) && '
4040 . '$(SHELL) ./config.status '
4041 . ($relative_dir eq '.' ? '' : '$(subdir)/')
4042 . '$@'
4043 . "\n");
4044 push (@actual_other_files, $local);
4045 }
4047 # For links we should clean destinations and distribute sources.
4048 foreach my $spec (@config_links)
4049 {
4050 my ($link, $file) = split /:/, $spec;
4051 # Some people do AC_CONFIG_LINKS($computed). We only handle
4052 # the DEST:SRC form.
4053 next unless $file;
4054 my $where = $ac_config_files_location{$link};
4056 # Skip destinations that contain shell variables.
4057 if ($link !~ /\$/)
4058 {
4059 # We skip links that aren't in this directory. However, if
4060 # the link's directory does not have a Makefile, and we are
4061 # currently doing `.', then we add the link to CONFIG_CLEAN_FILES
4062 # in `.'s Makefile.in.
4063 my $local = basename ($link);
4064 my $fd = dirname ($link);
4065 if ($fd ne $relative_dir)
4066 {
4067 if ($relative_dir eq '.' && ! &is_make_dir ($fd))
4068 {
4069 $local = $link;
4070 }
4071 else
4072 {
4073 $local = undef;
4074 }
4075 }
4076 push @actual_other_files, $local if $local;
4077 }
4079 # Do not process sources that contain shell variables.
4080 if ($file !~ /\$/)
4081 {
4082 my $fd = dirname ($file);
4084 # Make sure the dist directory for each input file is created.
4085 # We only have to do this at the topmost level though.
4086 if ($relative_dir eq '.')
4087 {
4088 $dist_dirs{$fd} = 1;
4089 }
4091 # We distribute files that are in this directory.
4092 # At the top-level (`.') we also distribute files whose
4093 # directory does not have a Makefile.
4094 if (($fd eq $relative_dir)
4095 || ($relative_dir eq '.' && ! &is_make_dir ($fd)))
4096 {
4097 # The following will distribute $file as a side-effect when
4098 # it is appropriate (i.e., when $file is not already an output).
4099 # We do not need the result, just the side-effect.
4100 rewrite_inputs_into_dependencies ($link, $file);
4101 }
4102 }
4103 }
4105 # These files get removed by "make distclean".
4106 define_pretty_variable ('CONFIG_CLEAN_FILES', TRUE, INTERNAL,
4107 @actual_other_files);
4108 }
4110 # Handle C headers.
4111 sub handle_headers
4112 {
4113 my @r = &am_install_var ('-defaultdist', 'header', 'HEADERS', 'include',
4114 'oldinclude', 'pkginclude',
4115 'noinst', 'check');
4116 foreach (@r)
4117 {
4118 next unless $_->[1] =~ /\..*$/;
4119 &saw_extension ($&);
4120 }
4121 }
4123 sub handle_gettext
4124 {
4125 return if ! $seen_gettext || $relative_dir ne '.';
4127 my $subdirs = var 'SUBDIRS';
4129 if (! $subdirs)
4130 {
4131 err_ac "AM_GNU_GETTEXT used but SUBDIRS not defined";
4132 return;
4133 }
4135 # Perform some sanity checks to help users get the right setup.
4136 # We disable these tests when po/ doesn't exist in order not to disallow
4137 # unusual gettext setups.
4138 #
4139 # Bruno Haible:
4140 # | The idea is:
4141 # |
4142 # | 1) If a package doesn't have a directory po/ at top level, it
4143 # | will likely have multiple po/ directories in subpackages.
4144 # |
4145 # | 2) It is useful to warn for the absence of intl/ if AM_GNU_GETTEXT
4146 # | is used without 'external'. It is also useful to warn for the
4147 # | presence of intl/ if AM_GNU_GETTEXT([external]) is used. Both
4148 # | warnings apply only to the usual layout of packages, therefore
4149 # | they should both be disabled if no po/ directory is found at
4150 # | top level.
4152 if (-d 'po')
4153 {
4154 my @subdirs = $subdirs->value_as_list_recursive;
4156 msg_var ('syntax', $subdirs,
4157 "AM_GNU_GETTEXT used but `po' not in SUBDIRS")
4158 if ! grep ($_ eq 'po', @subdirs);
4160 # intl/ is not required when AM_GNU_GETTEXT is called with
4161 # the `external' option.
4162 msg_var ('syntax', $subdirs,
4163 "AM_GNU_GETTEXT used but `intl' not in SUBDIRS")
4164 if (! $seen_gettext_external
4165 && ! grep ($_ eq 'intl', @subdirs));
4167 # intl/ should not be used with AM_GNU_GETTEXT([external])
4168 msg_var ('syntax', $subdirs,
4169 "`intl' should not be in SUBDIRS when "
4170 . "AM_GNU_GETTEXT([external]) is used")
4171 if ($seen_gettext_external && grep ($_ eq 'intl', @subdirs));
4172 }
4174 require_file ($ac_gettext_location, GNU, 'ABOUT-NLS');
4175 }
4177 # Handle footer elements.
4178 sub handle_footer
4179 {
4180 # NOTE don't use define_pretty_variable here, because
4181 # $contents{...} is already defined.
4182 $output_vars .= 'SOURCES = ' . variable_value ('SOURCES') . "\n\n"
4183 if variable_value ('SOURCES');
4185 reject_rule ('.SUFFIXES',
4186 "use variable `SUFFIXES', not target `.SUFFIXES'");
4188 # Note: AIX 4.1 /bin/make will fail if any suffix rule appears
4189 # before .SUFFIXES. So we make sure that .SUFFIXES appears before
4190 # anything else, by sticking it right after the default: target.
4191 $output_header .= ".SUFFIXES:\n";
4192 my $suffixes = var 'SUFFIXES';
4193 my @suffixes = Automake::Rule::suffixes;
4194 if (@suffixes || $suffixes)
4195 {
4196 # Make sure SUFFIXES has unique elements. Sort them to ensure
4197 # the output remains consistent. However, $(SUFFIXES) is
4198 # always at the start of the list, unsorted. This is done
4199 # because make will choose rules depending on the ordering of
4200 # suffixes, and this lets the user have some control. Push
4201 # actual suffixes, and not $(SUFFIXES). Some versions of make
4202 # do not like variable substitutions on the .SUFFIXES line.
4203 my @user_suffixes = ($suffixes
4204 ? $suffixes->value_as_list_recursive : ());
4206 my %suffixes = map { $_ => 1 } @suffixes;
4207 delete @suffixes{@user_suffixes};
4209 $output_header .= (".SUFFIXES: "
4210 . join (' ', @user_suffixes, sort keys %suffixes)
4211 . "\n");
4212 }
4214 $output_trailer .= file_contents ('footer', new Automake::Location);
4215 }
4218 # Generate `make install' rules.
4219 sub handle_install ()
4220 {
4221 $output_rules .= &file_contents
4222 ('install',
4223 new Automake::Location,
4224 maybe_BUILT_SOURCES => (set_seen ('BUILT_SOURCES')
4225 ? (" \$(BUILT_SOURCES)\n"
4226 . "\t\$(MAKE) \$(AM_MAKEFLAGS)")
4227 : ''),
4228 'installdirs-local' => (user_phony_rule 'installdirs-local'
4229 ? ' installdirs-local' : ''),
4230 am__installdirs => variable_value ('am__installdirs') || '');
4231 }
4234 # Deal with all and all-am.
4235 sub handle_all ($)
4236 {
4237 my ($makefile) = @_;
4239 # Output `all-am'.
4241 # Put this at the beginning for the sake of non-GNU makes. This
4242 # is still wrong if these makes can run parallel jobs. But it is
4243 # right enough.
4244 unshift (@all, basename ($makefile));
4246 foreach my $spec (@config_headers)
4247 {
4248 my ($out, @ins) = split_config_file_spec ($spec);
4249 push (@all, basename ($out))
4250 if dirname ($out) eq $relative_dir;
4251 }
4253 # Install `all' hooks.
4254 push (@all, "all-local")
4255 if user_phony_rule "all-local";
4257 &pretty_print_rule ("all-am:", "\t\t", @all);
4258 &depend ('.PHONY', 'all-am', 'all');
4261 # Output `all'.
4263 my @local_headers = ();
4264 push @local_headers, '$(BUILT_SOURCES)'
4265 if var ('BUILT_SOURCES');
4266 foreach my $spec (@config_headers)
4267 {
4268 my ($out, @ins) = split_config_file_spec ($spec);
4269 push @local_headers, basename ($out)
4270 if dirname ($out) eq $relative_dir;
4271 }
4273 if (@local_headers)
4274 {
4275 # We need to make sure config.h is built before we recurse.
4276 # We also want to make sure that built sources are built
4277 # before any ordinary `all' targets are run. We can't do this
4278 # by changing the order of dependencies to the "all" because
4279 # that breaks when using parallel makes. Instead we handle
4280 # things explicitly.
4281 $output_all .= ("all: @local_headers"
4282 . "\n\t"
4283 . '$(MAKE) $(AM_MAKEFLAGS) '
4284 . (var ('SUBDIRS') ? 'all-recursive' : 'all-am')
4285 . "\n\n");
4286 }
4287 else
4288 {
4289 $output_all .= "all: " . (var ('SUBDIRS')
4290 ? 'all-recursive' : 'all-am') . "\n\n";
4291 }
4292 }
4295 # &do_check_merge_target ()
4296 # -------------------------
4297 # Handle check merge target specially.
4298 sub do_check_merge_target ()
4299 {
4300 # Include user-defined local form of target.
4301 push @check_tests, 'check-local'
4302 if user_phony_rule 'check-local';
4304 # In --cygnus mode, check doesn't depend on all.
4305 if (option 'cygnus')
4306 {
4307 # Just run the local check rules.
4308 pretty_print_rule ('check-am:', "\t\t", @check);
4309 }
4310 else
4311 {
4312 # The check target must depend on the local equivalent of
4313 # `all', to ensure all the primary targets are built. Then it
4314 # must build the local check rules.
4315 $output_rules .= "check-am: all-am\n";
4316 pretty_print_rule ("\t\$(MAKE) \$(AM_MAKEFLAGS)", "\t ",
4317 @check)
4318 if @check;
4319 }
4320 pretty_print_rule ("\t\$(MAKE) \$(AM_MAKEFLAGS)", "\t ",
4321 @check_tests)
4322 if @check_tests;
4324 depend '.PHONY', 'check', 'check-am';
4325 # Handle recursion. We have to honor BUILT_SOURCES like for `all:'.
4326 $output_rules .= ("check: "
4327 . (var ('BUILT_SOURCES')
4328 ? "\$(BUILT_SOURCES)\n\t\$(MAKE) \$(AM_MAKEFLAGS) "
4329 : '')
4330 . (var ('SUBDIRS') ? 'check-recursive' : 'check-am')
4331 . "\n");
4332 }
4334 # handle_clean ($MAKEFILE)
4335 # ------------------------
4336 # Handle all 'clean' targets.
4337 sub handle_clean ($)
4338 {
4339 my ($makefile) = @_;
4341 # Clean the files listed in user variables if they exist.
4342 $clean_files{'$(MOSTLYCLEANFILES)'} = MOSTLY_CLEAN
4343 if var ('MOSTLYCLEANFILES');
4344 $clean_files{'$(CLEANFILES)'} = CLEAN
4345 if var ('CLEANFILES');
4346 $clean_files{'$(DISTCLEANFILES)'} = DIST_CLEAN
4347 if var ('DISTCLEANFILES');
4348 $clean_files{'$(MAINTAINERCLEANFILES)'} = MAINTAINER_CLEAN
4349 if var ('MAINTAINERCLEANFILES');
4351 # Built sources are automatically removed by maintainer-clean.
4352 $clean_files{'$(BUILT_SOURCES)'} = MAINTAINER_CLEAN
4353 if var ('BUILT_SOURCES');
4355 # Compute a list of "rm"s to run for each target.
4356 my %rms = (MOSTLY_CLEAN, [],
4357 CLEAN, [],
4358 DIST_CLEAN, [],
4359 MAINTAINER_CLEAN, []);
4361 foreach my $file (keys %clean_files)
4362 {
4363 my $when = $clean_files{$file};
4364 prog_error 'invalid entry in %clean_files'
4365 unless exists $rms{$when};
4367 my $rm = "rm -f $file";
4368 # If file is a variable, make sure when don't call `rm -f' without args.
4369 $rm ="test -z \"$file\" || $rm"
4370 if ($file =~ /^\s*\$(\(.*\)|\{.*\})\s*$/);
4372 push @{$rms{$when}}, "\t-$rm\n";
4373 }
4375 $output_rules .= &file_contents
4376 ('clean',
4377 new Automake::Location,
4378 MOSTLYCLEAN_RMS => join ('', sort @{$rms{&MOSTLY_CLEAN}}),
4379 CLEAN_RMS => join ('', sort @{$rms{&CLEAN}}),
4380 DISTCLEAN_RMS => join ('', sort @{$rms{&DIST_CLEAN}}),
4381 MAINTAINER_CLEAN_RMS => join ('', sort @{$rms{&MAINTAINER_CLEAN}}),
4382 MAKEFILE => basename $makefile,
4383 );
4384 }
4387 # &target_cmp ($A, $B)
4388 # --------------------
4389 # Subroutine for &handle_factored_dependencies to let `.PHONY' and
4390 # other `.TARGETS' be last.
4391 sub target_cmp
4392 {
4393 return 0 if $a eq $b;
4395 my $a1 = substr ($a, 0, 1);
4396 my $b1 = substr ($b, 0, 1);
4397 if ($a1 ne $b1)
4398 {
4399 return -1 if $b1 eq '.';
4400 return 1 if $a1 eq '.';
4401 }
4402 return $a cmp $b;
4403 }
4406 # &handle_factored_dependencies ()
4407 # --------------------------------
4408 # Handle everything related to gathered targets.
4409 sub handle_factored_dependencies
4410 {
4411 # Reject bad hooks.
4412 foreach my $utarg ('uninstall-data-local', 'uninstall-data-hook',
4413 'uninstall-exec-local', 'uninstall-exec-hook')
4414 {
4415 my $x = $utarg;
4416 $x =~ s/(data|exec)-//;
4417 reject_rule ($utarg, "use `$x', not `$utarg'");
4418 }
4420 reject_rule ('install-local',
4421 "use `install-data-local' or `install-exec-local', "
4422 . "not `install-local'");
4424 reject_rule ('install-info-local',
4425 "`install-info-local' target defined but "
4426 . "`no-installinfo' option not in use")
4427 unless option 'no-installinfo';
4429 # Install the -local hooks.
4430 foreach (keys %dependencies)
4431 {
4432 # Hooks are installed on the -am targets.
4433 s/-am$// or next;
4434 depend ("$_-am", "$_-local")
4435 if user_phony_rule "$_-local";
4436 }
4438 # Install the -hook hooks.
4439 # FIXME: Why not be as liberal as we are with -local hooks?
4440 foreach ('install-exec', 'install-data', 'uninstall')
4441 {
4442 if (user_phony_rule "$_-hook")
4443 {
4444 $actions{"$_-am"} .=
4445 ("\t\@\$(NORMAL_INSTALL)\n"
4446 . "\t" . '$(MAKE) $(AM_MAKEFLAGS) ' . "$_-hook\n");
4447 depend ('.MAKE', "$_-am");
4448 }
4449 }
4451 # All the required targets are phony.
4452 depend ('.PHONY', keys %required_targets);
4454 # Actually output gathered targets.
4455 foreach (sort target_cmp keys %dependencies)
4456 {
4457 # If there is nothing about this guy, skip it.
4458 next
4459 unless (@{$dependencies{$_}}
4460 || $actions{$_}
4461 || $required_targets{$_});
4463 # Define gathered targets in undefined conditions.
4464 # FIXME: Right now we must handle .PHONY as an exception,
4465 # because people write things like
4466 # .PHONY: myphonytarget
4467 # to append dependencies. This would not work if Automake
4468 # refrained from defining its own .PHONY target as it does
4469 # with other overridden targets.
4470 # Likewise for `.MAKE'.
4471 my @undefined_conds = (TRUE,);
4472 if ($_ ne '.PHONY' && $_ ne '.MAKE')
4473 {
4474 @undefined_conds =
4475 Automake::Rule::define ($_, 'internal',
4476 RULE_AUTOMAKE, TRUE, INTERNAL);
4477 }
4478 my @uniq_deps = uniq (sort @{$dependencies{$_}});
4479 foreach my $cond (@undefined_conds)
4480 {
4481 my $condstr = $cond->subst_string;
4482 &pretty_print_rule ("$condstr$_:", "$condstr\t", @uniq_deps);
4483 $output_rules .= $actions{$_} if defined $actions{$_};
4484 $output_rules .= "\n";
4485 }
4486 }
4487 }
4490 # &handle_tests_dejagnu ()
4491 # ------------------------
4492 sub handle_tests_dejagnu
4493 {
4494 push (@check_tests, 'check-DEJAGNU');
4495 $output_rules .= file_contents ('dejagnu', new Automake::Location);
4496 }
4499 # Handle TESTS variable and other checks.
4500 sub handle_tests
4501 {
4502 if (option 'dejagnu')
4503 {
4504 &handle_tests_dejagnu;
4505 }
4506 else
4507 {
4508 foreach my $c ('DEJATOOL', 'RUNTEST', 'RUNTESTFLAGS')
4509 {
4510 reject_var ($c, "`$c' defined but `dejagnu' not in "
4511 . "`AUTOMAKE_OPTIONS'");
4512 }
4513 }
4515 if (var ('TESTS'))
4516 {
4517 push (@check_tests, 'check-TESTS');
4518 $output_rules .= &file_contents ('check', new Automake::Location);
4519 }
4520 }
4522 # Handle Emacs Lisp.
4523 sub handle_emacs_lisp
4524 {
4525 my @elfiles = &am_install_var ('-candist', 'lisp', 'LISP',
4526 'lisp', 'noinst');
4528 return if ! @elfiles;
4530 define_pretty_variable ('am__ELFILES', TRUE, INTERNAL,
4531 map { $_->[1] } @elfiles);
4532 define_pretty_variable ('am__ELCFILES', TRUE, INTERNAL,
4533 '$(am__ELFILES:.el=.elc)');
4534 # This one can be overridden by users.
4535 define_pretty_variable ('ELCFILES', TRUE, INTERNAL, '$(LISP:.el=.elc)');
4537 push @all, '$(ELCFILES)';
4539 require_variables ($elfiles[0][0], "Emacs Lisp sources seen", TRUE,
4540 'EMACS', 'lispdir');
4541 require_conf_file ($elfiles[0][0], FOREIGN, 'elisp-comp');
4542 &define_variable ('elisp_comp', "$am_config_aux_dir/elisp-comp", INTERNAL);
4543 }
4545 # Handle Python
4546 sub handle_python
4547 {
4548 my @pyfiles = &am_install_var ('-defaultdist', 'python', 'PYTHON',
4549 'noinst');
4550 return if ! @pyfiles;
4552 require_variables ($pyfiles[0][0], "Python sources seen", TRUE, 'PYTHON');
4553 require_conf_file ($pyfiles[0][0], FOREIGN, 'py-compile');
4554 &define_variable ('py_compile', "$am_config_aux_dir/py-compile", INTERNAL);
4555 }
4557 # Handle Java.
4558 sub handle_java
4559 {
4560 my @sourcelist = &am_install_var ('-candist',
4561 'java', 'JAVA',
4562 'java', 'noinst', 'check');
4563 return if ! @sourcelist;
4565 my @prefix = am_primary_prefixes ('JAVA', 1,
4566 'java', 'noinst', 'check');
4568 my $dir;
4569 foreach my $curs (@prefix)
4570 {
4571 next
4572 if $curs eq 'EXTRA';
4574 err_var "${curs}_JAVA", "multiple _JAVA primaries in use"
4575 if defined $dir;
4576 $dir = $curs;
4577 }
4580 push (@all, 'class' . $dir . '.stamp');
4581 }
4584 # Handle some of the minor options.
4585 sub handle_minor_options
4586 {
4587 if (option 'readme-alpha')
4588 {
4589 if ($relative_dir eq '.')
4590 {
4591 if ($package_version !~ /^$GNITS_VERSION_PATTERN$/)
4592 {
4593 msg ('error-gnits', $package_version_location,
4594 "version `$package_version' doesn't follow " .
4595 "Gnits standards");
4596 }
4597 if (defined $1 && -f 'README-alpha')
4598 {
4599 # This means we have an alpha release. See
4600 # GNITS_VERSION_PATTERN for details.
4601 push_dist_common ('README-alpha');
4602 }
4603 }
4604 }
4605 }
4607 ################################################################
4609 # ($OUTPUT, @INPUTS)
4610 # &split_config_file_spec ($SPEC)
4611 # -------------------------------
4612 # Decode the Autoconf syntax for config files (files, headers, links
4613 # etc.).
4614 sub split_config_file_spec ($)
4615 {
4616 my ($spec) = @_;
4617 my ($output, @inputs) = split (/:/, $spec);
4619 push @inputs, "$output.in"
4620 unless @inputs;
4622 return ($output, @inputs);
4623 }
4625 # $input
4626 # locate_am (@POSSIBLE_SOURCES)
4627 # -----------------------------
4628 # AC_CONFIG_FILES allow specifications such as Makefile:top.in:mid.in:bot.in
4629 # This functions returns the first *.in file for which a *.am exists.
4630 # It returns undef otherwise.
4631 sub locate_am (@)
4632 {
4633 my (@rest) = @_;
4634 my $input;
4635 foreach my $file (@rest)
4636 {
4637 if (($file =~ /^(.*)\.in$/) && -f "$1.am")
4638 {
4639 $input = $file;
4640 last;
4641 }
4642 }
4643 return $input;
4644 }
4646 my %make_list;
4648 # &scan_autoconf_config_files ($WHERE, $CONFIG-FILES)
4649 # ---------------------------------------------------
4650 # Study $CONFIG-FILES which is the first argument to AC_CONFIG_FILES
4651 # (or AC_OUTPUT).
4652 sub scan_autoconf_config_files ($$)
4653 {
4654 my ($where, $config_files) = @_;
4656 # Look at potential Makefile.am's.
4657 foreach (split ' ', $config_files)
4658 {
4659 # Must skip empty string for Perl 4.
4660 next if $_ eq "\\" || $_ eq '';
4662 # Handle $local:$input syntax.
4663 my ($local, @rest) = split (/:/);
4664 @rest = ("$local.in",) unless @rest;
4665 my $input = locate_am @rest;
4666 if ($input)
4667 {
4668 # We have a file that automake should generate.
4669 $make_list{$input} = join (':', ($local, @rest));
4670 }
4671 else
4672 {
4673 # We have a file that automake should cause to be
4674 # rebuilt, but shouldn't generate itself.
4675 push (@other_input_files, $_);
4676 }
4677 $ac_config_files_location{$local} = $where;
4678 }
4679 }
4682 # &scan_autoconf_traces ($FILENAME)
4683 # ---------------------------------
4684 sub scan_autoconf_traces ($)
4685 {
4686 my ($filename) = @_;
4688 # Macros to trace, with their minimal number of arguments.
4689 #
4690 # IMPORTANT: If you add a macro here, you should also add this macro
4691 # ========= to Automake-preselection in autoconf/lib/autom4te.in.
4692 my %traced = (
4693 AC_CANONICAL_BUILD => 0,
4694 AC_CANONICAL_HOST => 0,
4695 AC_CANONICAL_TARGET => 0,
4696 AC_CONFIG_AUX_DIR => 1,
4697 AC_CONFIG_FILES => 1,
4698 AC_CONFIG_HEADERS => 1,
4699 AC_CONFIG_LINKS => 1,
4700 AC_INIT => 0,
4701 AC_LIBSOURCE => 1,
4702 AC_REQUIRE_AUX_FILE => 1,
4703 AC_SUBST => 1,
4704 AM_AUTOMAKE_VERSION => 1,
4705 AM_CONDITIONAL => 2,
4706 AM_ENABLE_MULTILIB => 0,
4707 AM_GNU_GETTEXT => 0,
4708 AM_INIT_AUTOMAKE => 0,
4709 AM_MAINTAINER_MODE => 0,
4710 AM_PROG_CC_C_O => 0,
4711 LT_SUPPORTED_TAG => 1,
4712 _LT_AC_TAGCONFIG => 0,
4713 m4_include => 1,
4714 m4_sinclude => 1,
4715 sinclude => 1,
4716 );
4718 my $traces = ($ENV{AUTOCONF} || 'autoconf') . " ";
4720 # Use a separator unlikely to be used, not `:', the default, which
4721 # has a precise meaning for AC_CONFIG_FILES and so on.
4722 $traces .= join (' ',
4723 map { "--trace=$_" . ':\$f:\$l::\$n::\${::}%' }
4724 (keys %traced));
4726 my $tracefh = new Automake::XFile ("$traces $filename |");
4727 verb "reading $traces";
4729 while ($_ = $tracefh->getline)
4730 {
4731 chomp;
4732 my ($here, @args) = split (/::/);
4733 my $where = new Automake::Location $here;
4734 my $macro = $args[0];
4736 prog_error ("unrequested trace `$macro'")
4737 unless exists $traced{$macro};
4739 # Skip and diagnose malformed calls.
4740 if ($#args < $traced{$macro})
4741 {
4742 msg ('syntax', $where, "not enough arguments for $macro");
4743 next;
4744 }
4746 # Alphabetical ordering please.
4747 if ($macro eq 'AC_CANONICAL_BUILD')
4748 {
4749 if ($seen_canonical <= AC_CANONICAL_BUILD)
4750 {
4751 $seen_canonical = AC_CANONICAL_BUILD;
4752 $canonical_location = $where;
4753 }
4754 }
4755 elsif ($macro eq 'AC_CANONICAL_HOST')
4756 {
4757 if ($seen_canonical <= AC_CANONICAL_HOST)
4758 {
4759 $seen_canonical = AC_CANONICAL_HOST;
4760 $canonical_location = $where;
4761 }
4762 }
4763 elsif ($macro eq 'AC_CANONICAL_TARGET')
4764 {
4765 $seen_canonical = AC_CANONICAL_TARGET;
4766 $canonical_location = $where;
4767 }
4768 elsif ($macro eq 'AC_CONFIG_AUX_DIR')
4769 {
4770 if ($seen_init_automake)
4771 {
4772 error ($where, "AC_CONFIG_AUX_DIR must be called before "
4773 . "AM_INIT_AUTOMAKE...", partial => 1);
4774 error ($seen_init_automake, "... AM_INIT_AUTOMAKE called here");
4775 }
4776 $config_aux_dir = $args[1];
4777 $config_aux_dir_set_in_configure_ac = 1;
4778 $relative_dir = '.';
4779 check_directory ($config_aux_dir, $where);
4780 }
4781 elsif ($macro eq 'AC_CONFIG_FILES')
4782 {
4783 # Look at potential Makefile.am's.
4784 scan_autoconf_config_files ($where, $args[1]);
4785 }
4786 elsif ($macro eq 'AC_CONFIG_HEADERS')
4787 {
4788 foreach my $spec (split (' ', $args[1]))
4789 {
4790 my ($dest, @src) = split (':', $spec);
4791 $ac_config_files_location{$dest} = $where;
4792 push @config_headers, $spec;
4793 }
4794 }
4795 elsif ($macro eq 'AC_CONFIG_LINKS')
4796 {
4797 foreach my $spec (split (' ', $args[1]))
4798 {
4799 my ($dest, $src) = split (':', $spec);
4800 $ac_config_files_location{$dest} = $where;
4801 push @config_links, $spec;
4802 }
4803 }
4804 elsif ($macro eq 'AC_INIT')
4805 {
4806 if (defined $args[2])
4807 {
4808 $package_version = $args[2];
4809 $package_version_location = $where;
4810 }
4811 }
4812 elsif ($macro eq 'AC_LIBSOURCE')
4813 {
4814 $libsources{$args[1]} = $here;
4815 }
4816 elsif ($macro eq 'AC_SUBST')
4817 {
4818 # Just check for alphanumeric in AC_SUBST. If you do
4819 # AC_SUBST(5), then too bad.
4820 $configure_vars{$args[1]} = $where
4821 if $args[1] =~ /^\w+$/;
4822 }
4823 elsif ($macro eq 'AM_AUTOMAKE_VERSION')
4824 {
4825 error ($where,
4826 "version mismatch. This is Automake $VERSION,\n" .
4827 "but the definition used by this AM_INIT_AUTOMAKE\n" .
4828 "comes from Automake $args[1]. You should recreate\n" .
4829 "aclocal.m4 with aclocal and run automake again.\n",
4830 # $? = 63 is used to indicate version mismatch to missing.
4831 exit_code => 63)
4832 if $VERSION ne $args[1];
4834 $seen_automake_version = 1;
4835 }
4836 elsif ($macro eq 'AM_CONDITIONAL')
4837 {
4838 $configure_cond{$args[1]} = $where;
4839 }
4840 elsif ($macro eq 'AM_ENABLE_MULTILIB')
4841 {
4842 $seen_multilib = $where;
4843 }
4844 elsif ($macro eq 'AM_GNU_GETTEXT')
4845 {
4846 $seen_gettext = $where;
4847 $ac_gettext_location = $where;
4848 $seen_gettext_external = grep ($_ eq 'external', @args);
4849 }
4850 elsif ($macro eq 'AM_INIT_AUTOMAKE')
4851 {
4852 $seen_init_automake = $where;
4853 if (defined $args[2])
4854 {
4855 $package_version = $args[2];
4856 $package_version_location = $where;
4857 }
4858 elsif (defined $args[1])
4859 {
4860 exit $exit_code
4861 if (process_global_option_list ($where,
4862 split (' ', $args[1])));
4863 }
4864 }
4865 elsif ($macro eq 'AM_MAINTAINER_MODE')
4866 {
4867 $seen_maint_mode = $where;
4868 }
4869 elsif ($macro eq 'AM_PROG_CC_C_O')
4870 {
4871 $seen_cc_c_o = $where;
4872 }
4873 elsif ($macro eq 'AC_REQUIRE_AUX_FILE')
4874 {
4875 # Only remember the first time a file is required.
4876 $required_aux_file{$args[1]} = $where
4877 unless exists $required_aux_file{$args[1]};
4878 }
4879 elsif ($macro eq 'm4_include'
4880 || $macro eq 'm4_sinclude'
4881 || $macro eq 'sinclude')
4882 {
4883 # Some modified versions of Autoconf don't use
4884 # forzen files. Consequently it's possible that we see all
4885 # m4_include's performed during Autoconf's startup.
4886 # Obviously we don't want to distribute Autoconf's files
4887 # so we skip absolute filenames here.
4888 push @configure_deps, '$(top_srcdir)/' . $args[1]
4889 unless $here =~ m,^(?:\w:)?[\\/],;
4890 # Keep track of the greatest timestamp.
4891 if (-e $args[1])
4892 {
4893 my $mtime = mtime $args[1];
4894 $configure_deps_greatest_timestamp = $mtime
4895 if $mtime > $configure_deps_greatest_timestamp;
4896 }
4897 }
4898 elsif ($macro eq 'LT_SUPPORTED_TAG')
4899 {
4900 $libtool_tags{$args[1]} = 1;
4901 $libtool_new_api = 1;
4902 }
4903 elsif ($macro eq '_LT_AC_TAGCONFIG')
4904 {
4905 # _LT_AC_TAGCONFIG is an old macro present in Libtool 1.5.
4906 # We use it to detect whether tags are supported. Our
4907 # prefered interface is LT_SUPPORTED_TAG, but it was
4908 # introduced in Libtool 1.6.
4909 if (0 == keys %libtool_tags)
4910 {
4911 # Hardcode the tags supported by Libtool 1.5.
4912 %libtool_tags = (CC => 1, CXX => 1, GCJ => 1, F77 => 1);
4913 }
4914 }
4915 }
4917 $tracefh->close;
4918 }
4921 # &scan_autoconf_files ()
4922 # -----------------------
4923 # Check whether we use `configure.ac' or `configure.in'.
4924 # Scan it (and possibly `aclocal.m4') for interesting things.
4925 # We must scan aclocal.m4 because there might be AC_SUBSTs and such there.
4926 sub scan_autoconf_files ()
4927 {
4928 # Reinitialize libsources here. This isn't really necessary,
4929 # since we currently assume there is only one configure.ac. But
4930 # that won't always be the case.
4931 %libsources = ();
4933 # Keep track of the youngest configure dependency.
4934 $configure_deps_greatest_timestamp = mtime $configure_ac;
4935 if (-e 'aclocal.m4')
4936 {
4937 my $mtime = mtime 'aclocal.m4';
4938 $configure_deps_greatest_timestamp = $mtime
4939 if $mtime > $configure_deps_greatest_timestamp;
4940 }
4942 scan_autoconf_traces ($configure_ac);
4944 @configure_input_files = sort keys %make_list;
4945 # Set input and output files if not specified by user.
4946 if (! @input_files)
4947 {
4948 @input_files = @configure_input_files;
4949 %output_files = %make_list;
4950 }
4953 if (! $seen_init_automake)
4954 {
4955 err_ac ("no proper invocation of AM_INIT_AUTOMAKE was found.\nYou "
4956 . "should verify that $configure_ac invokes AM_INIT_AUTOMAKE,"
4957 . "\nthat aclocal.m4 is present in the top-level directory,\n"
4958 . "and that aclocal.m4 was recently regenerated "
4959 . "(using aclocal).");
4960 }
4961 else
4962 {
4963 if (! $seen_automake_version)
4964 {
4965 if (-f 'aclocal.m4')
4966 {
4967 error ($seen_init_automake,
4968 "your implementation of AM_INIT_AUTOMAKE comes from " .
4969 "an\nold Automake version. You should recreate " .
4970 "aclocal.m4\nwith aclocal and run automake again.\n",
4971 # $? = 63 is used to indicate version mismatch to missing.
4972 exit_code => 63);
4973 }
4974 else
4975 {
4976 error ($seen_init_automake,
4977 "no proper implementation of AM_INIT_AUTOMAKE was " .
4978 "found,\nprobably because aclocal.m4 is missing...\n" .
4979 "You should run aclocal to create this file, then\n" .
4980 "run automake again.\n");
4981 }
4982 }
4983 }
4985 locate_aux_dir ();
4987 # Reorder @input_files so that the Makefile that distributes aux
4988 # files is processed last. This is important because each directory
4989 # can require auxiliary scripts and we should wait until they have
4990 # been installed before distributing them.
4992 # The Makefile.in that distribute the aux files is the one in
4993 # $config_aux_dir or the top-level Makefile.
4994 my $auxdirdist = is_make_dir ($config_aux_dir) ? $config_aux_dir : '.';
4995 my @new_input_files = ();
4996 while (@input_files)
4997 {
4998 my $in = pop @input_files;
4999 my @ins = split (/:/, $output_files{$in});
5000 if (dirname ($ins[0]) eq $auxdirdist)
5001 {
5002 push @new_input_files, $in;
5003 $automake_will_process_aux_dir = 1;
5004 }
5005 else
5006 {
5007 unshift @new_input_files, $in;
5008 }
5009 }
5010 @input_files = @new_input_files;
5012 # If neither the auxdir/Makefile nor the ./Makefile are generated
5013 # by Automake, we won't distribute the aux files anyway. Assume
5014 # the user know what (s)he does, and pretend we will distribute
5015 # them to disable the error in require_file_internal.
5016 $automake_will_process_aux_dir = 1 if ! is_make_dir ($auxdirdist);
5018 # Look for some files we need. Always check for these. This
5019 # check must be done for every run, even those where we are only
5020 # looking at a subdir Makefile. We must set relative_dir for
5021 # maybe_push_required_file to work.
5022 $relative_dir = '.';
5023 foreach my $file (keys %required_aux_file)
5024 {
5025 require_conf_file ($required_aux_file{$file}->get, FOREIGN, $file)
5026 }
5027 err_am "`install.sh' is an anachronism; use `install-sh' instead"
5028 if -f $config_aux_dir . '/install.sh';
5030 # Preserve dist_common for later.
5031 $configure_dist_common = variable_value ('DIST_COMMON') || '';
5033 }
5035 ################################################################
5037 # Set up for Cygnus mode.
5038 sub check_cygnus
5039 {
5040 my $cygnus = option 'cygnus';
5041 return unless $cygnus;
5043 set_strictness ('foreign');
5044 set_option ('no-installinfo', $cygnus);
5045 set_option ('no-dependencies', $cygnus);
5046 set_option ('no-dist', $cygnus);
5048 err_ac "`AM_MAINTAINER_MODE' required when --cygnus specified"
5049 if !$seen_maint_mode;
5050 }
5052 # Do any extra checking for GNU standards.
5053 sub check_gnu_standards
5054 {
5055 if ($relative_dir eq '.')
5056 {
5057 # In top level (or only) directory.
5058 require_file ("$am_file.am", GNU,
5059 qw/INSTALL NEWS README AUTHORS ChangeLog/);
5061 # Accept one of these three licenses; default to COPYING.
5062 # Make sure we do not overwrite an existing license.
5063 my $license;
5064 foreach (qw /COPYING COPYING.LIB COPYING.LESSER/)
5065 {
5066 if (-f $_)
5067 {
5068 $license = $_;
5069 last;
5070 }
5071 }
5072 require_file ("$am_file.am", GNU, 'COPYING')
5073 unless $license;
5074 }
5076 for my $opt ('no-installman', 'no-installinfo')
5077 {
5078 msg ('error-gnu', option $opt,
5079 "option `$opt' disallowed by GNU standards")
5080 if option $opt;
5081 }
5082 }
5084 # Do any extra checking for GNITS standards.
5085 sub check_gnits_standards
5086 {
5087 if ($relative_dir eq '.')
5088 {
5089 # In top level (or only) directory.
5090 require_file ("$am_file.am", GNITS, 'THANKS');
5091 }
5092 }
5094 ################################################################
5095 #
5096 # Functions to handle files of each language.
5098 # Each `lang_X_rewrite($DIRECTORY, $BASE, $EXT)' function follows a
5099 # simple formula: Return value is LANG_SUBDIR if the resulting object
5100 # file should be in a subdir if the source file is, LANG_PROCESS if
5101 # file is to be dealt with, LANG_IGNORE otherwise.
5103 # Much of the actual processing is handled in
5104 # handle_single_transform. These functions exist so that
5105 # auxiliary information can be recorded for a later cleanup pass.
5106 # Note that the calls to these functions are computed, so don't bother
5107 # searching for their precise names in the source.
5109 # This is just a convenience function that can be used to determine
5110 # when a subdir object should be used.
5111 sub lang_sub_obj
5112 {
5113 return option 'subdir-objects' ? LANG_SUBDIR : LANG_PROCESS;
5114 }
5116 # Rewrite a single C source file.
5117 sub lang_c_rewrite
5118 {
5119 my ($directory, $base, $ext, $nonansi_obj, $have_per_exec_flags, $var) = @_;
5121 if (option 'ansi2knr' && $base =~ /_$/)
5122 {
5123 # FIXME: include line number in error.
5124 err_am "C source file `$base.c' would be deleted by ansi2knr rules";
5125 }
5127 my $r = LANG_PROCESS;
5128 if (option 'subdir-objects')
5129 {
5130 $r = LANG_SUBDIR;
5131 if ($directory && $directory ne '.')
5132 {
5133 $base = $directory . '/' . $base;
5135 # libtool is always able to put the object at the proper place,
5136 # so we do not have to require AM_PROG_CC_C_O when building .lo files.
5137 err_var ($var, "compiling `$base.c' in subdir requires "
5138 . "`AM_PROG_CC_C_O' in `$configure_ac'",
5139 uniq_scope => US_GLOBAL,
5140 uniq_part => 'AM_PROG_CC_C_O subdir')
5141 unless $seen_cc_c_o || $nonansi_obj eq '.lo';
5142 }
5144 # In this case we already have the directory information, so
5145 # don't add it again.
5146 $de_ansi_files{$base} = '';
5147 }
5148 else
5149 {
5150 $de_ansi_files{$base} = (($directory eq '.' || $directory eq '')
5151 ? ''
5152 : "$directory/");
5153 }
5155 if (! $seen_cc_c_o
5156 && $have_per_exec_flags
5157 && ! option 'subdir-objects'
5158 && $nonansi_obj ne '.lo')
5159 {
5160 err_var ($var, "compiling `$base.c' with per-target flags requires "
5161 . "`AM_PROG_CC_C_O' in `$configure_ac'",
5162 uniq_scope => US_GLOBAL,
5163 uniq_part => 'AM_PROG_CC_C_O per-target')
5164 }
5166 return $r;
5167 }
5169 # Rewrite a single C++ source file.
5170 sub lang_cxx_rewrite
5171 {
5172 return &lang_sub_obj;
5173 }
5175 # Rewrite a single header file.
5176 sub lang_header_rewrite
5177 {
5178 # Header files are simply ignored.
5179 return LANG_IGNORE;
5180 }
5182 # Rewrite a single yacc file.
5183 sub lang_yacc_rewrite
5184 {
5185 my ($directory, $base, $ext) = @_;
5187 my $r = &lang_sub_obj;
5188 (my $newext = $ext) =~ tr/y/c/;
5189 return ($r, $newext);
5190 }
5192 # Rewrite a single yacc++ file.
5193 sub lang_yaccxx_rewrite
5194 {
5195 my ($directory, $base, $ext) = @_;
5197 my $r = &lang_sub_obj;
5198 (my $newext = $ext) =~ tr/y/c/;
5199 return ($r, $newext);
5200 }
5202 # Rewrite a single lex file.
5203 sub lang_lex_rewrite
5204 {
5205 my ($directory, $base, $ext) = @_;
5207 my $r = &lang_sub_obj;
5208 (my $newext = $ext) =~ tr/l/c/;
5209 return ($r, $newext);
5210 }
5212 # Rewrite a single lex++ file.
5213 sub lang_lexxx_rewrite
5214 {
5215 my ($directory, $base, $ext) = @_;
5217 my $r = &lang_sub_obj;
5218 (my $newext = $ext) =~ tr/l/c/;
5219 return ($r, $newext);
5220 }
5222 # Rewrite a single assembly file.
5223 sub lang_asm_rewrite
5224 {
5225 return &lang_sub_obj;
5226 }
5228 # Rewrite a single preprocessed assembly file.
5229 sub lang_cppasm_rewrite
5230 {
5231 return &lang_sub_obj;
5232 }
5234 # Rewrite a single Fortran 77 file.
5235 sub lang_f77_rewrite
5236 {
5237 return LANG_PROCESS;
5238 }
5240 # Rewrite a single Fortran file.
5241 sub lang_fc_rewrite
5242 {
5243 return LANG_PROCESS;
5244 }
5246 # Rewrite a single preprocessed Fortran file.
5247 sub lang_ppfc_rewrite
5248 {
5249 return LANG_PROCESS;
5250 }
5252 # Rewrite a single preprocessed Fortran 77 file.
5253 sub lang_ppf77_rewrite
5254 {
5255 return LANG_PROCESS;
5256 }
5258 # Rewrite a single ratfor file.
5259 sub lang_ratfor_rewrite
5260 {
5261 return LANG_PROCESS;
5262 }
5264 # Rewrite a single Objective C file.
5265 sub lang_objc_rewrite
5266 {
5267 return &lang_sub_obj;
5268 }
5270 # Rewrite a single Java file.
5271 sub lang_java_rewrite
5272 {
5273 return LANG_SUBDIR;
5274 }
5276 # The lang_X_finish functions are called after all source file
5277 # processing is done. Each should handle defining rules for the
5278 # language, etc. A finish function is only called if a source file of
5279 # the appropriate type has been seen.
5281 sub lang_c_finish
5282 {
5283 # Push all libobjs files onto de_ansi_files. We actually only
5284 # push files which exist in the current directory, and which are
5285 # genuine source files.
5286 foreach my $file (keys %libsources)
5287 {
5288 if ($file =~ /^(.*)\.[cly]$/ && -f "$relative_dir/$file")
5289 {
5290 $de_ansi_files{$1} = ''
5291 }
5292 }
5294 if (option 'ansi2knr' && keys %de_ansi_files)
5295 {
5296 # Make all _.c files depend on their corresponding .c files.
5297 my @objects;
5298 foreach my $base (sort keys %de_ansi_files)
5299 {
5300 # Each _.c file must depend on ansi2knr; otherwise it
5301 # might be used in a parallel build before it is built.
5302 # We need to support files in the srcdir and in the build
5303 # dir (because these files might be auto-generated. But
5304 # we can't use $< -- some makes only define $< during a
5305 # suffix rule.
5306 my $ansfile = $de_ansi_files{$base} . $base . '.c';
5307 $output_rules .= ($base . "_.c: $ansfile \$(ANSI2KNR)\n\t"
5308 . '$(CPP) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS) $(CPPFLAGS) '
5309 . '`if test -f $(srcdir)/' . $ansfile
5310 . '; then echo $(srcdir)/' . $ansfile
5311 . '; else echo ' . $ansfile . '; fi` '
5312 . "| sed 's/^# \\([0-9]\\)/#line \\1/' "
5313 . '| $(ANSI2KNR) > $@'
5314 # If ansi2knr fails then we shouldn't
5315 # create the _.c file
5316 . " || rm -f \$\@\n");
5317 push (@objects, $base . '_.$(OBJEXT)');
5318 push (@objects, $base . '_.lo')
5319 if var ('LIBTOOL');
5321 # Explicitly clean the _.c files if they are in a
5322 # subdirectory. (In the current directory they get erased
5323 # by a `rm -f *_.c' rule.)
5324 $clean_files{$base . '_.c'} = MOSTLY_CLEAN
5325 if dirname ($base) ne '.';
5326 }
5328 # Make all _.o (and _.lo) files depend on ansi2knr.
5329 # Use a sneaky little hack to make it print nicely.
5330 &pretty_print_rule ('', '', @objects, ':', '$(ANSI2KNR)');
5331 }
5332 }
5334 # This is a yacc helper which is called whenever we have decided to
5335 # compile a yacc file.
5336 sub lang_yacc_target_hook
5337 {
5338 my ($self, $aggregate, $output, $input, %transform) = @_;
5340 my $flag = $aggregate . "_YFLAGS";
5341 my $flagvar = var $flag;
5342 my $YFLAGSvar = var 'YFLAGS';
5343 if (($flagvar && $flagvar->variable_value =~ /$DASH_D_PATTERN/o)
5344 || ($YFLAGSvar && $YFLAGSvar->variable_value =~ /$DASH_D_PATTERN/o))
5345 {
5346 (my $output_base = $output) =~ s/$KNOWN_EXTENSIONS_PATTERN$//;
5347 my $header = $output_base . '.h';
5349 # Found a `-d' that applies to the compilation of this file.
5350 # Add a dependency for the generated header file, and arrange
5351 # for that file to be included in the distribution.
5352 foreach my $cond (Automake::Rule::define (${header}, 'internal',
5353 RULE_AUTOMAKE, TRUE,
5354 INTERNAL))
5355 {
5356 my $condstr = $cond->subst_string;
5357 $output_rules .= ("$condstr${header}: $output\n"
5358 # Recover from removal of $header
5359 . "$condstr\t\@if test ! -f \$@; then \\\n"
5360 . "$condstr\t rm -f $output; \\\n"
5361 . "$condstr\t \$(MAKE) $output; \\\n"
5362 . "$condstr\telse :; fi\n");
5363 }
5364 # Distribute the generated file, unless its .y source was
5365 # listed in a nodist_ variable. (&handle_source_transform
5366 # will set DIST_SOURCE.)
5367 &push_dist_common ($header)
5368 if $transform{'DIST_SOURCE'};
5370 # If the files are built in the build directory, then we want
5371 # to remove them with `make clean'. If they are in srcdir
5372 # they shouldn't be touched. However, we can't determine this
5373 # statically, and the GNU rules say that yacc/lex output files
5374 # should be removed by maintainer-clean. So that's what we
5375 # do.
5376 $clean_files{$header} = MAINTAINER_CLEAN;
5377 }
5378 # Erase $OUTPUT on `make maintainer-clean' (by GNU standards).
5379 # See the comment above for $HEADER.
5380 $clean_files{$output} = MAINTAINER_CLEAN;
5381 }
5383 # This is a lex helper which is called whenever we have decided to
5384 # compile a lex file.
5385 sub lang_lex_target_hook
5386 {
5387 my ($self, $aggregate, $output, $input) = @_;
5388 # If the files are built in the build directory, then we want to
5389 # remove them with `make clean'. If they are in srcdir they
5390 # shouldn't be touched. However, we can't determine this
5391 # statically, and the GNU rules say that yacc/lex output files
5392 # should be removed by maintainer-clean. So that's what we do.
5393 $clean_files{$output} = MAINTAINER_CLEAN;
5394 }
5396 # This is a helper for both lex and yacc.
5397 sub yacc_lex_finish_helper
5398 {
5399 return if defined $language_scratch{'lex-yacc-done'};
5400 $language_scratch{'lex-yacc-done'} = 1;
5402 # If there is more than one distinct yacc (resp lex) source file
5403 # in a given directory, then the `ylwrap' program is required to
5404 # allow parallel builds to work correctly. FIXME: for now, no
5405 # line number.
5406 require_conf_file ($configure_ac, FOREIGN, 'ylwrap');
5407 &define_variable ('YLWRAP', "$am_config_aux_dir/ylwrap", INTERNAL);
5408 }
5410 sub lang_yacc_finish
5411 {
5412 return if defined $language_scratch{'yacc-done'};
5413 $language_scratch{'yacc-done'} = 1;
5415 reject_var 'YACCFLAGS', "`YACCFLAGS' obsolete; use `YFLAGS' instead";
5417 &yacc_lex_finish_helper
5418 if count_files_for_language ('yacc') > 1;
5419 }
5422 sub lang_lex_finish
5423 {
5424 return if defined $language_scratch{'lex-done'};
5425 $language_scratch{'lex-done'} = 1;
5427 &yacc_lex_finish_helper
5428 if count_files_for_language ('lex') > 1;
5429 }
5432 # Given a hash table of linker names, pick the name that has the most
5433 # precedence. This is lame, but something has to have global
5434 # knowledge in order to eliminate the conflict. Add more linkers as
5435 # required.
5436 sub resolve_linker
5437 {
5438 my (%linkers) = @_;
5440 foreach my $l (qw(GCJLINK CXXLINK F77LINK FCLINK OBJCLINK))
5441 {
5442 return $l if defined $linkers{$l};
5443 }
5444 return 'LINK';
5445 }
5447 # Called to indicate that an extension was used.
5448 sub saw_extension
5449 {
5450 my ($ext) = @_;
5451 if (! defined $extension_seen{$ext})
5452 {
5453 $extension_seen{$ext} = 1;
5454 }
5455 else
5456 {
5457 ++$extension_seen{$ext};
5458 }
5459 }
5461 # Return the number of files seen for a given language. Knows about
5462 # special cases we care about. FIXME: this is hideous. We need
5463 # something that involves real language objects. For instance yacc
5464 # and yaccxx could both derive from a common yacc class which would
5465 # know about the strange ylwrap requirement. (Or better yet we could
5466 # just not support legacy yacc!)
5467 sub count_files_for_language
5468 {
5469 my ($name) = @_;
5471 my @names;
5472 if ($name eq 'yacc' || $name eq 'yaccxx')
5473 {
5474 @names = ('yacc', 'yaccxx');
5475 }
5476 elsif ($name eq 'lex' || $name eq 'lexxx')
5477 {
5478 @names = ('lex', 'lexxx');
5479 }
5480 else
5481 {
5482 @names = ($name);
5483 }
5485 my $r = 0;
5486 foreach $name (@names)
5487 {
5488 my $lang = $languages{$name};
5489 foreach my $ext (@{$lang->extensions})
5490 {
5491 $r += $extension_seen{$ext}
5492 if defined $extension_seen{$ext};
5493 }
5494 }
5496 return $r
5497 }
5499 # Called to ask whether source files have been seen . If HEADERS is 1,
5500 # headers can be included.
5501 sub saw_sources_p
5502 {
5503 my ($headers) = @_;
5505 # count all the sources
5506 my $count = 0;
5507 foreach my $val (values %extension_seen)
5508 {
5509 $count += $val;
5510 }
5512 if (!$headers)
5513 {
5514 $count -= count_files_for_language ('header');
5515 }
5517 return $count > 0;
5518 }
5521 # register_language (%ATTRIBUTE)
5522 # ------------------------------
5523 # Register a single language.
5524 # Each %ATTRIBUTE is of the form ATTRIBUTE => VALUE.
5525 sub register_language (%)
5526 {
5527 my (%option) = @_;
5529 # Set the defaults.
5530 $option{'ansi'} = 0
5531 unless defined $option{'ansi'};
5532 $option{'autodep'} = 'no'
5533 unless defined $option{'autodep'};
5534 $option{'linker'} = ''
5535 unless defined $option{'linker'};
5536 $option{'flags'} = []
5537 unless defined $option{'flags'};
5538 $option{'output_extensions'} = sub { return ( '.$(OBJEXT)', '.lo' ) }
5539 unless defined $option{'output_extensions'};
5540 $option{'nodist_specific'} = 0
5541 unless defined $option{'nodist_specific'};
5543 my $lang = new Language (%option);
5545 # Fill indexes.
5546 $extension_map{$_} = $lang->name foreach @{$lang->extensions};
5547 $languages{$lang->name} = $lang;
5549 # Update the pattern of known extensions.
5550 accept_extensions (@{$lang->extensions});
5552 # Upate the $suffix_rule map.
5553 foreach my $suffix (@{$lang->extensions})
5554 {
5555 foreach my $dest (&{$lang->output_extensions} ($suffix))
5556 {
5557 register_suffix_rule (INTERNAL, $suffix, $dest);
5558 }
5559 }
5560 }
5562 # derive_suffix ($EXT, $OBJ)
5563 # --------------------------
5564 # This function is used to find a path from a user-specified suffix $EXT
5565 # to $OBJ or to some other suffix we recognize internally, e.g. `cc'.
5566 sub derive_suffix ($$)
5567 {
5568 my ($source_ext, $obj) = @_;
5570 while (! $extension_map{$source_ext}
5571 && $source_ext ne $obj
5572 && exists $suffix_rules->{$source_ext}
5573 && exists $suffix_rules->{$source_ext}{$obj})
5574 {
5575 $source_ext = $suffix_rules->{$source_ext}{$obj}[0];
5576 }
5578 return $source_ext;
5579 }
5582 ################################################################
5584 # Pretty-print something and append to output_rules.
5585 sub pretty_print_rule
5586 {
5587 $output_rules .= &makefile_wrap (@_);
5588 }
5591 ################################################################
5594 ## -------------------------------- ##
5595 ## Handling the conditional stack. ##
5596 ## -------------------------------- ##
5599 # $STRING
5600 # make_conditional_string ($NEGATE, $COND)
5601 # ----------------------------------------
5602 sub make_conditional_string ($$)
5603 {
5604 my ($negate, $cond) = @_;
5605 $cond = "${cond}_TRUE"
5606 unless $cond =~ /^TRUE|FALSE$/;
5607 $cond = Automake::Condition::conditional_negate ($cond)
5608 if $negate;
5609 return $cond;
5610 }
5613 # $COND
5614 # cond_stack_if ($NEGATE, $COND, $WHERE)
5615 # --------------------------------------
5616 sub cond_stack_if ($$$)
5617 {
5618 my ($negate, $cond, $where) = @_;
5620 error $where, "$cond does not appear in AM_CONDITIONAL"
5621 if ! $configure_cond{$cond} && $cond !~ /^TRUE|FALSE$/;
5623 push (@cond_stack, make_conditional_string ($negate, $cond));
5625 return new Automake::Condition (@cond_stack);
5626 }
5629 # $COND
5630 # cond_stack_else ($NEGATE, $COND, $WHERE)
5631 # ----------------------------------------
5632 sub cond_stack_else ($$$)
5633 {
5634 my ($negate, $cond, $where) = @_;
5636 if (! @cond_stack)
5637 {
5638 error $where, "else without if";
5639 return FALSE;
5640 }
5642 $cond_stack[$#cond_stack] =
5643 Automake::Condition::conditional_negate ($cond_stack[$#cond_stack]);
5645 # If $COND is given, check against it.
5646 if (defined $cond)
5647 {
5648 $cond = make_conditional_string ($negate, $cond);
5650 error ($where, "else reminder ($negate$cond) incompatible with "
5651 . "current conditional: $cond_stack[$#cond_stack]")
5652 if $cond_stack[$#cond_stack] ne $cond;
5653 }
5655 return new Automake::Condition (@cond_stack);
5656 }
5659 # $COND
5660 # cond_stack_endif ($NEGATE, $COND, $WHERE)
5661 # -----------------------------------------
5662 sub cond_stack_endif ($$$)
5663 {
5664 my ($negate, $cond, $where) = @_;
5665 my $old_cond;
5667 if (! @cond_stack)
5668 {
5669 error $where, "endif without if";
5670 return TRUE;
5671 }
5673 # If $COND is given, check against it.
5674 if (defined $cond)
5675 {
5676 $cond = make_conditional_string ($negate, $cond);
5678 error ($where, "endif reminder ($negate$cond) incompatible with "
5679 . "current conditional: $cond_stack[$#cond_stack]")
5680 if $cond_stack[$#cond_stack] ne $cond;
5681 }
5683 pop @cond_stack;
5685 return new Automake::Condition (@cond_stack);
5686 }
5692 ## ------------------------ ##
5693 ## Handling the variables. ##
5694 ## ------------------------ ##
5697 # &define_pretty_variable ($VAR, $COND, $WHERE, @VALUE)
5698 # -----------------------------------------------------
5699 # Like define_variable, but the value is a list, and the variable may
5700 # be defined conditionally. The second argument is the Condition
5701 # under which the value should be defined; this should be the empty
5702 # string to define the variable unconditionally. The third argument
5703 # is a list holding the values to use for the variable. The value is
5704 # pretty printed in the output file.
5705 sub define_pretty_variable ($$$@)
5706 {
5707 my ($var, $cond, $where, @value) = @_;
5709 if (! vardef ($var, $cond))
5710 {
5711 Automake::Variable::define ($var, VAR_AUTOMAKE, '', $cond, "@value",
5712 '', $where, VAR_PRETTY);
5713 rvar ($var)->rdef ($cond)->set_seen;
5714 }
5715 }
5718 # define_variable ($VAR, $VALUE, $WHERE)
5719 # --------------------------------------
5720 # Define a new Automake Makefile variable VAR to VALUE, but only if
5721 # not already defined.
5722 sub define_variable ($$$)
5723 {
5724 my ($var, $value, $where) = @_;
5725 define_pretty_variable ($var, TRUE, $where, $value);
5726 }
5729 # define_files_variable ($VAR, \@BASENAME, $EXTENSION, $WHERE)
5730 # -----------------------------------------------------------
5731 # Define the $VAR which content is the list of file names composed of
5732 # a @BASENAME and the $EXTENSION.
5733 sub define_files_variable ($\@$$)
5734 {
5735 my ($var, $basename, $extension, $where) = @_;
5736 define_variable ($var,
5737 join (' ', map { "$_.$extension" } @$basename),
5738 $where);
5739 }
5742 # Like define_variable, but define a variable to be the configure
5743 # substitution by the same name.
5744 sub define_configure_variable ($)
5745 {
5746 my ($var) = @_;
5748 my $pretty = VAR_ASIS;
5749 my $owner = VAR_CONFIGURE;
5751 # Do not output the ANSI2KNR configure variable -- we AC_SUBST
5752 # it in protos.m4, but later redefine it elsewhere. This is
5753 # pretty hacky. We also don't output AMDEPBACKSLASH: it might
5754 # be subst'd by `\', which certainly would not be appreciated by
5755 # Make.
5756 if ($var eq 'ANSI2KNR' || $var eq 'AMDEPBACKSLASH')
5757 {
5758 $pretty = VAR_SILENT;
5759 $owner = VAR_AUTOMAKE;
5760 }
5762 Automake::Variable::define ($var, $owner, '', TRUE, subst $var,
5763 '', $configure_vars{$var}, $pretty);
5764 }
5767 # define_compiler_variable ($LANG)
5768 # --------------------------------
5769 # Define a compiler variable. We also handle defining the `LT'
5770 # version of the command when using libtool.
5771 sub define_compiler_variable ($)
5772 {
5773 my ($lang) = @_;
5775 my ($var, $value) = ($lang->compiler, $lang->compile);
5776 my $libtool_tag = '';
5777 $libtool_tag = '--tag=' . $lang->libtool_tag . ' '
5778 if $lang->libtool_tag && exists $libtool_tags{$lang->libtool_tag};
5779 &define_variable ($var, $value, INTERNAL);
5780 &define_variable ("LT$var",
5781 "\$(LIBTOOL) $libtool_tag\$(AM_LIBTOOLFLAGS) "
5782 . "\$(LIBTOOLFLAGS) --mode=compile $value",
5783 INTERNAL)
5784 if var ('LIBTOOL');
5785 }
5788 # define_linker_variable ($LANG)
5789 # ------------------------------
5790 # Define linker variables.
5791 sub define_linker_variable ($)
5792 {
5793 my ($lang) = @_;
5795 my ($var, $value) = ($lang->lder, $lang->ld);
5796 my $libtool_tag = '';
5797 $libtool_tag = '--tag=' . $lang->libtool_tag . ' '
5798 if $lang->libtool_tag && exists $libtool_tags{$lang->libtool_tag};
5799 # CCLD = $(CC).
5800 &define_variable ($lang->lder, $lang->ld, INTERNAL);
5801 # CCLINK = $(CCLD) blah blah...
5802 &define_variable ($lang->linker,
5803 ((var ('LIBTOOL') ?
5804 "\$(LIBTOOL) $libtool_tag\$(AM_LIBTOOLFLAGS) "
5805 . "\$(LIBTOOLFLAGS) --mode=link " : '')
5806 . $lang->link),
5807 INTERNAL);
5808 }
5810 ################################################################
5812 # &check_trailing_slash ($WHERE, $LINE)
5813 # --------------------------------------
5814 # Return 1 iff $LINE ends with a slash.
5815 # Might modify $LINE.
5816 sub check_trailing_slash ($\$)
5817 {
5818 my ($where, $line) = @_;
5820 # Ignore `##' lines.
5821 return 0 if $$line =~ /$IGNORE_PATTERN/o;
5823 # Catch and fix a common error.
5824 msg "syntax", $where, "whitespace following trailing backslash"
5825 if $$line =~ s/\\\s+\n$/\\\n/;
5827 return $$line =~ /\\$/;
5828 }
5831 # &read_am_file ($AMFILE, $WHERE)
5832 # -------------------------------
5833 # Read Makefile.am and set up %contents. Simultaneously copy lines
5834 # from Makefile.am into $output_trailer, or define variables as
5835 # appropriate. NOTE we put rules in the trailer section. We want
5836 # user rules to come after our generated stuff.
5837 sub read_am_file ($$)
5838 {
5839 my ($amfile, $where) = @_;
5841 my $am_file = new Automake::XFile ("< $amfile");
5842 verb "reading $amfile";
5844 # Keep track of the youngest output dependency.
5845 my $mtime = mtime $amfile;
5846 $output_deps_greatest_timestamp = $mtime
5847 if $mtime > $output_deps_greatest_timestamp;
5849 my $spacing = '';
5850 my $comment = '';
5851 my $blank = 0;
5852 my $saw_bk = 0;
5854 use constant IN_VAR_DEF => 0;
5855 use constant IN_RULE_DEF => 1;
5856 use constant IN_COMMENT => 2;
5857 my $prev_state = IN_RULE_DEF;
5859 while ($_ = $am_file->getline)
5860 {
5861 $where->set ("$amfile:$.");
5862 if (/$IGNORE_PATTERN/o)
5863 {
5864 # Merely delete comments beginning with two hashes.
5865 }
5866 elsif (/$WHITE_PATTERN/o)
5867 {
5868 error $where, "blank line following trailing backslash"
5869 if $saw_bk;
5870 # Stick a single white line before the incoming macro or rule.
5871 $spacing = "\n";
5872 $blank = 1;
5873 # Flush all comments seen so far.
5874 if ($comment ne '')
5875 {
5876 $output_vars .= $comment;
5877 $comment = '';
5878 }
5879 }
5880 elsif (/$COMMENT_PATTERN/o)
5881 {
5882 # Stick comments before the incoming macro or rule. Make
5883 # sure a blank line precedes the first block of comments.
5884 $spacing = "\n" unless $blank;
5885 $blank = 1;
5886 $comment .= $spacing . $_;
5887 $spacing = '';
5888 $prev_state = IN_COMMENT;
5889 }
5890 else
5891 {
5892 last;
5893 }
5894 $saw_bk = check_trailing_slash ($where, $_);
5895 }
5897 # We save the conditional stack on entry, and then check to make
5898 # sure it is the same on exit. This lets us conditionally include
5899 # other files.
5900 my @saved_cond_stack = @cond_stack;
5901 my $cond = new Automake::Condition (@cond_stack);
5903 my $last_var_name = '';
5904 my $last_var_type = '';
5905 my $last_var_value = '';
5906 my $last_where;
5907 # FIXME: shouldn't use $_ in this loop; it is too big.
5908 while ($_)
5909 {
5910 $where->set ("$amfile:$.");
5912 # Make sure the line is \n-terminated.
5913 chomp;
5914 $_ .= "\n";
5916 # Don't look at MAINTAINER_MODE_TRUE here. That shouldn't be
5917 # used by users. @MAINT@ is an anachronism now.
5918 $_ =~ s/\@MAINT\@//g
5919 unless $seen_maint_mode;
5921 my $new_saw_bk = check_trailing_slash ($where, $_);
5923 if (/$IGNORE_PATTERN/o)
5924 {
5925 # Merely delete comments beginning with two hashes.
5926 }
5927 elsif (/$WHITE_PATTERN/o)
5928 {
5929 # Stick a single white line before the incoming macro or rule.
5930 $spacing = "\n";
5931 error $where, "blank line following trailing backslash"
5932 if $saw_bk;
5933 }
5934 elsif (/$COMMENT_PATTERN/o)
5935 {
5936 # Stick comments before the incoming macro or rule.
5937 $comment .= $spacing . $_;
5938 $spacing = '';
5939 error $where, "comment following trailing backslash"
5940 if $saw_bk && $comment eq '';
5941 $prev_state = IN_COMMENT;
5942 }
5943 elsif ($saw_bk)
5944 {
5945 if ($prev_state == IN_RULE_DEF)
5946 {
5947 my $cond = new Automake::Condition @cond_stack;
5948 $output_trailer .= $cond->subst_string;
5949 $output_trailer .= $_;
5950 }
5951 elsif ($prev_state == IN_COMMENT)
5952 {
5953 # If the line doesn't start with a `#', add it.
5954 # We do this because a continued comment like
5955 # # A = foo \
5956 # bar \
5957 # baz
5958 # is not portable. BSD make doesn't honor
5959 # escaped newlines in comments.
5960 s/^#?/#/;
5961 $comment .= $spacing . $_;
5962 }
5963 else # $prev_state == IN_VAR_DEF
5964 {
5965 $last_var_value .= ' '
5966 unless $last_var_value =~ /\s$/;
5967 $last_var_value .= $_;
5969 if (!/\\$/)
5970 {
5971 Automake::Variable::define ($last_var_name, VAR_MAKEFILE,
5972 $last_var_type, $cond,
5973 $last_var_value, $comment,
5974 $last_where, VAR_ASIS)
5975 if $cond != FALSE;
5976 $comment = $spacing = '';
5977 }
5978 }
5979 }
5981 elsif (/$IF_PATTERN/o)
5982 {
5983 $cond = cond_stack_if ($1, $2, $where);
5984 }
5985 elsif (/$ELSE_PATTERN/o)
5986 {
5987 $cond = cond_stack_else ($1, $2, $where);
5988 }
5989 elsif (/$ENDIF_PATTERN/o)
5990 {
5991 $cond = cond_stack_endif ($1, $2, $where);
5992 }
5994 elsif (/$RULE_PATTERN/o)
5995 {
5996 # Found a rule.
5997 $prev_state = IN_RULE_DEF;
5999 # For now we have to output all definitions of user rules
6000 # and can't diagnose duplicates (see the comment in
6001 # rule_define). So we go on and ignore the return value.
6002 Automake::Rule::define ($1, $amfile, RULE_USER, $cond, $where);
6004 check_variable_expansions ($_, $where);
6006 $output_trailer .= $comment . $spacing;
6007 my $cond = new Automake::Condition @cond_stack;
6008 $output_trailer .= $cond->subst_string;
6009 $output_trailer .= $_;
6010 $comment = $spacing = '';
6011 }
6012 elsif (/$ASSIGNMENT_PATTERN/o)
6013 {
6014 # Found a macro definition.
6015 $prev_state = IN_VAR_DEF;
6016 $last_var_name = $1;
6017 $last_var_type = $2;
6018 $last_var_value = $3;
6019 $last_where = $where->clone;
6020 if ($3 ne '' && substr ($3, -1) eq "\\")
6021 {
6022 # We preserve the `\' because otherwise the long lines
6023 # that are generated will be truncated by broken
6024 # `sed's.
6025 $last_var_value = $3 . "\n";
6026 }
6028 if (!/\\$/)
6029 {
6030 Automake::Variable::define ($last_var_name, VAR_MAKEFILE,
6031 $last_var_type, $cond,
6032 $last_var_value, $comment,
6033 $last_where, VAR_ASIS)
6034 if $cond != FALSE;
6035 $comment = $spacing = '';
6036 }
6037 }
6038 elsif (/$INCLUDE_PATTERN/o)
6039 {
6040 my $path = $1;
6042 if ($path =~ s/^\$\(top_srcdir\)\///)
6043 {
6044 push (@include_stack, "\$\(top_srcdir\)/$path");
6045 # Distribute any included file.
6047 # Always use the $(top_srcdir) prefix in DIST_COMMON,
6048 # otherwise OSF make will implicitly copy the included
6049 # file in the build tree during `make distdir' to satisfy
6050 # the dependency.
6051 # (subdircond2.test and subdircond3.test will fail.)
6052 push_dist_common ("\$\(top_srcdir\)/$path");
6053 }
6054 else
6055 {
6056 $path =~ s/\$\(srcdir\)\///;
6057 push (@include_stack, "\$\(srcdir\)/$path");
6058 # Always use the $(srcdir) prefix in DIST_COMMON,
6059 # otherwise OSF make will implicitly copy the included
6060 # file in the build tree during `make distdir' to satisfy
6061 # the dependency.
6062 # (subdircond2.test and subdircond3.test will fail.)
6063 push_dist_common ("\$\(srcdir\)/$path");
6064 $path = $relative_dir . "/" . $path if $relative_dir ne '.';
6065 }
6066 $where->push_context ("`$path' included from here");
6067 &read_am_file ($path, $where);
6068 $where->pop_context;
6069 }
6070 else
6071 {
6072 # This isn't an error; it is probably a continued rule.
6073 # In fact, this is what we assume.
6074 $prev_state = IN_RULE_DEF;
6075 check_variable_expansions ($_, $where);
6076 $output_trailer .= $comment . $spacing;
6077 my $cond = new Automake::Condition @cond_stack;
6078 $output_trailer .= $cond->subst_string;
6079 $output_trailer .= $_;
6080 $comment = $spacing = '';
6081 error $where, "`#' comment at start of rule is unportable"
6082 if $_ =~ /^\t\s*\#/;
6083 }
6085 $saw_bk = $new_saw_bk;
6086 $_ = $am_file->getline;
6087 }
6089 $output_trailer .= $comment;
6091 error ($where, "trailing backslash on last line")
6092 if $saw_bk;
6094 error ($where, (@cond_stack ? "unterminated conditionals: @cond_stack"
6095 : "too many conditionals closed in include file"))
6096 if "@saved_cond_stack" ne "@cond_stack";
6097 }
6100 # define_standard_variables ()
6101 # ----------------------------
6102 # A helper for read_main_am_file which initializes configure variables
6103 # and variables from header-vars.am.
6104 sub define_standard_variables
6105 {
6106 my $saved_output_vars = $output_vars;
6107 my ($comments, undef, $rules) =
6108 file_contents_internal (1, "$libdir/am/header-vars.am",
6109 new Automake::Location);
6111 foreach my $var (sort keys %configure_vars)
6112 {
6113 &define_configure_variable ($var);
6114 }
6116 $output_vars .= $comments . $rules;
6117 }
6119 # Read main am file.
6120 sub read_main_am_file
6121 {
6122 my ($amfile) = @_;
6124 # This supports the strange variable tricks we are about to play.
6125 prog_error (macros_dump () . "variable defined before read_main_am_file")
6126 if (scalar (variables) > 0);
6128 # Generate copyright header for generated Makefile.in.
6129 # We do discard the output of predefined variables, handled below.
6130 $output_vars = ("# $in_file_name generated by automake "
6131 . $VERSION . " from $am_file_name.\n");
6132 $output_vars .= '# ' . subst ('configure_input') . "\n";
6133 $output_vars .= $gen_copyright;
6135 # We want to predefine as many variables as possible. This lets
6136 # the user set them with `+=' in Makefile.am.
6137 &define_standard_variables;
6139 # Read user file, which might override some of our values.
6140 &read_am_file ($amfile, new Automake::Location);
6141 }
6145 ################################################################
6147 # $FLATTENED
6148 # &flatten ($STRING)
6149 # ------------------
6150 # Flatten the $STRING and return the result.
6151 sub flatten
6152 {
6153 $_ = shift;
6155 s/\\\n//somg;
6156 s/\s+/ /g;
6157 s/^ //;
6158 s/ $//;
6160 return $_;
6161 }
6163 # transform($TOKEN, \%PAIRS)
6164 # ==========================
6165 # If ($TOKEN, $VAL) is in %PAIRS:
6166 # - replaces %$TOKEN% with $VAL,
6167 # - enables/disables ?$TOKEN? and ?!$TOKEN?,
6168 # - replaces %?$TOKEN% with TRUE or FALSE.
6169 sub transform($$)
6170 {
6171 my ($token, $transform) = @_;
6173 if (substr ($token, 0, 1) eq '%')
6174 {
6175 my $cond = (substr ($token, 1, 1) eq '?') ? 1 : 0;
6176 $token = substr ($token, 1 + $cond, -1);
6177 my $val = $transform->{$token};
6178 prog_error "Unknown %token% `$token'" unless defined $val;
6179 if ($cond)
6180 {
6181 return $val ? 'TRUE' : 'FALSE';
6182 }
6183 else
6184 {
6185 return $val;
6186 }
6187 }
6188 # Now $token is '?xxx?' or '?!xxx?'.
6189 my $neg = (substr ($token, 1, 1) eq '!') ? 1 : 0;
6190 $token = substr ($token, 1 + $neg, -1);
6191 my $val = $transform->{$token};
6192 prog_error "Unknown ?token? `$token' (neg = $neg)" unless defined $val;
6193 return (!!$val == $neg) ? '##%' : '';
6194 }
6196 # @PARAGRAPHS
6197 # &make_paragraphs ($MAKEFILE, [%TRANSFORM])
6198 # ------------------------------------------
6199 # Load a $MAKEFILE, apply the %TRANSFORM, and return it as a list of
6200 # paragraphs.
6201 sub make_paragraphs ($%)
6202 {
6203 my ($file, %transform) = @_;
6205 # Complete %transform with global options.
6206 # Note that %transform goes last, so it overrides global options.
6207 %transform = ('CYGNUS' => !! option 'cygnus',
6208 'MAINTAINER-MODE'
6209 => $seen_maint_mode ? subst ('MAINTAINER_MODE_TRUE') : '',
6211 'BZIP2' => !! option 'dist-bzip2',
6212 'COMPRESS' => !! option 'dist-tarZ',
6213 'GZIP' => ! option 'no-dist-gzip',
6214 'SHAR' => !! option 'dist-shar',
6215 'ZIP' => !! option 'dist-zip',
6217 'INSTALL-INFO' => ! option 'no-installinfo',
6218 'INSTALL-MAN' => ! option 'no-installman',
6219 'CK-NEWS' => !! option 'check-news',
6221 'SUBDIRS' => !! var ('SUBDIRS'),
6222 'TOPDIR' => backname ($relative_dir),
6223 'TOPDIR_P' => $relative_dir eq '.',
6225 'BUILD' => ($seen_canonical >= AC_CANONICAL_BUILD),
6226 'HOST' => ($seen_canonical >= AC_CANONICAL_HOST),
6227 'TARGET' => ($seen_canonical >= AC_CANONICAL_TARGET),
6229 'LIBTOOL' => !! var ('LIBTOOL'),
6230 'NONLIBTOOL' => 1,
6231 'FIRST' => ! $transformed_files{$file},
6232 %transform);
6234 $transformed_files{$file} = 1;
6235 $_ = $am_file_cache{$file};
6237 if (! defined $_)
6238 {
6239 verb "reading $file";
6240 # Swallow the whole file.
6241 my $fc_file = new Automake::XFile "< $file";
6242 my $saved_dollar_slash = $/;
6243 undef $/;
6244 $_ = $fc_file->getline;
6245 $/ = $saved_dollar_slash;
6246 $fc_file->close;
6248 # Remove ##-comments.
6249 # Besides we don't need more than two consecutive new-lines.
6250 s/(?:$IGNORE_PATTERN|(?<=\n\n)\n+)//gom;
6252 $am_file_cache{$file} = $_;
6253 }
6255 # Substitute Automake template tokens.
6256 s/(?:%\??[\w\-]+%|\?!?[\w\-]+\?)/transform($&, \%transform)/ge;
6257 # transform() may have added some ##%-comments to strip.
6258 # (we use `##%' instead of `##' so we can distinguish ##%##%##% from
6259 # ####### and do not remove the latter.)
6260 s/^[ \t]*(?:##%)+.*\n//gm;
6262 # Split at unescaped new lines.
6263 my @lines = split (/(?<!\\)\n/, $_);
6264 my @res;
6266 while (defined ($_ = shift @lines))
6267 {
6268 my $paragraph = $_;
6269 # If we are a rule, eat as long as we start with a tab.
6270 if (/$RULE_PATTERN/smo)
6271 {
6272 while (defined ($_ = shift @lines) && $_ =~ /^\t/)
6273 {
6274 $paragraph .= "\n$_";
6275 }
6276 unshift (@lines, $_);
6277 }
6279 # If we are a comments, eat as much comments as you can.
6280 elsif (/$COMMENT_PATTERN/smo)
6281 {
6282 while (defined ($_ = shift @lines)
6283 && $_ =~ /$COMMENT_PATTERN/smo)
6284 {
6285 $paragraph .= "\n$_";
6286 }
6287 unshift (@lines, $_);
6288 }
6290 push @res, $paragraph;
6291 }
6293 return @res;
6294 }
6298 # ($COMMENT, $VARIABLES, $RULES)
6299 # &file_contents_internal ($IS_AM, $FILE, $WHERE, [%TRANSFORM])
6300 # -------------------------------------------------------------
6301 # Return contents of a file from $libdir/am, automatically skipping
6302 # macros or rules which are already known. $IS_AM iff the caller is
6303 # reading an Automake file (as opposed to the user's Makefile.am).
6304 sub file_contents_internal ($$$%)
6305 {
6306 my ($is_am, $file, $where, %transform) = @_;
6308 $where->set ($file);
6310 my $result_vars = '';
6311 my $result_rules = '';
6312 my $comment = '';
6313 my $spacing = '';
6315 # The following flags are used to track rules spanning across
6316 # multiple paragraphs.
6317 my $is_rule = 0; # 1 if we are processing a rule.
6318 my $discard_rule = 0; # 1 if the current rule should not be output.
6320 # We save the conditional stack on entry, and then check to make
6321 # sure it is the same on exit. This lets us conditionally include
6322 # other files.
6323 my @saved_cond_stack = @cond_stack;
6324 my $cond = new Automake::Condition (@cond_stack);
6326 foreach (make_paragraphs ($file, %transform))
6327 {
6328 # FIXME: no line number available.
6329 $where->set ($file);
6331 # Sanity checks.
6332 error $where, "blank line following trailing backslash:\n$_"
6333 if /\\$/;
6334 error $where, "comment following trailing backslash:\n$_"
6335 if /\\#/;
6337 if (/^$/)
6338 {
6339 $is_rule = 0;
6340 # Stick empty line before the incoming macro or rule.
6341 $spacing = "\n";
6342 }
6343 elsif (/$COMMENT_PATTERN/mso)
6344 {
6345 $is_rule = 0;
6346 # Stick comments before the incoming macro or rule.
6347 $comment = "$_\n";
6348 }
6350 # Handle inclusion of other files.
6351 elsif (/$INCLUDE_PATTERN/o)
6352 {
6353 if ($cond != FALSE)
6354 {
6355 my $file = ($is_am ? "$libdir/am/" : '') . $1;
6356 $where->push_context ("`$file' included from here");
6357 # N-ary `.=' fails.
6358 my ($com, $vars, $rules)
6359 = file_contents_internal ($is_am, $file, $where, %transform);
6360 $where->pop_context;
6361 $comment .= $com;
6362 $result_vars .= $vars;
6363 $result_rules .= $rules;
6364 }
6365 }
6367 # Handling the conditionals.
6368 elsif (/$IF_PATTERN/o)
6369 {
6370 $cond = cond_stack_if ($1, $2, $file);
6371 }
6372 elsif (/$ELSE_PATTERN/o)
6373 {
6374 $cond = cond_stack_else ($1, $2, $file);
6375 }
6376 elsif (/$ENDIF_PATTERN/o)
6377 {
6378 $cond = cond_stack_endif ($1, $2, $file);
6379 }
6381 # Handling rules.
6382 elsif (/$RULE_PATTERN/mso)
6383 {
6384 $is_rule = 1;
6385 $discard_rule = 0;
6386 # Separate relationship from optional actions: the first
6387 # `new-line tab" not preceded by backslash (continuation
6388 # line).
6389 my $paragraph = $_;
6390 /^(.*?)(?:(?<!\\)\n(\t.*))?$/s;
6391 my ($relationship, $actions) = ($1, $2 || '');
6393 # Separate targets from dependencies: the first colon.
6394 $relationship =~ /^([^:]+\S+) *: *(.*)$/som;
6395 my ($targets, $dependencies) = ($1, $2);
6396 # Remove the escaped new lines.
6397 # I don't know why, but I have to use a tmp $flat_deps.
6398 my $flat_deps = &flatten ($dependencies);
6399 my @deps = split (' ', $flat_deps);
6401 foreach (split (' ' , $targets))
6402 {
6403 # FIXME: 1. We are not robust to people defining several targets
6404 # at once, only some of them being in %dependencies. The
6405 # actions from the targets in %dependencies are usually generated
6406 # from the content of %actions, but if some targets in $targets
6407 # are not in %dependencies the ELSE branch will output
6408 # a rule for all $targets (i.e. the targets which are both
6409 # in %dependencies and $targets will have two rules).
6411 # FIXME: 2. The logic here is not able to output a
6412 # multi-paragraph rule several time (e.g. for each condition
6413 # it is defined for) because it only knows the first paragraph.
6415 # FIXME: 3. We are not robust to people defining a subset
6416 # of a previously defined "multiple-target" rule. E.g.
6417 # `foo:' after `foo bar:'.
6419 # Output only if not in FALSE.
6420 if (defined $dependencies{$_} && $cond != FALSE)
6421 {
6422 &depend ($_, @deps);
6423 if ($actions{$_})
6424 {
6425 $actions{$_} .= "\n$actions" if $actions;
6426 }
6427 else
6428 {
6429 $actions{$_} = $actions;
6430 }
6431 }
6432 else
6433 {
6434 # Free-lance dependency. Output the rule for all the
6435 # targets instead of one by one.
6436 my @undefined_conds =
6437 Automake::Rule::define ($targets, $file,
6438 $is_am ? RULE_AUTOMAKE : RULE_USER,
6439 $cond, $where);
6440 for my $undefined_cond (@undefined_conds)
6441 {
6442 my $condparagraph = $paragraph;
6443 $condparagraph =~ s/^/$undefined_cond->subst_string/gme;
6444 $result_rules .= "$spacing$comment$condparagraph\n";
6445 }
6446 if (scalar @undefined_conds == 0)
6447 {
6448 # Remember to discard next paragraphs
6449 # if they belong to this rule.
6450 # (but see also FIXME: #2 above.)
6451 $discard_rule = 1;
6452 }
6453 $comment = $spacing = '';
6454 last;
6455 }
6456 }
6457 }
6459 elsif (/$ASSIGNMENT_PATTERN/mso)
6460 {
6461 my ($var, $type, $val) = ($1, $2, $3);
6462 error $where, "variable `$var' with trailing backslash"
6463 if /\\$/;
6465 $is_rule = 0;
6467 Automake::Variable::define ($var,
6468 $is_am ? VAR_AUTOMAKE : VAR_MAKEFILE,
6469 $type, $cond, $val, $comment, $where,
6470 VAR_ASIS)
6471 if $cond != FALSE;
6473 $comment = $spacing = '';
6474 }
6475 else
6476 {
6477 # This isn't an error; it is probably some tokens which
6478 # configure is supposed to replace, such as `@SET-MAKE@',
6479 # or some part of a rule cut by an if/endif.
6480 if (! $cond->false && ! ($is_rule && $discard_rule))
6481 {
6482 s/^/$cond->subst_string/gme;
6483 $result_rules .= "$spacing$comment$_\n";
6484 }
6485 $comment = $spacing = '';
6486 }
6487 }
6489 error ($where, @cond_stack ?
6490 "unterminated conditionals: @cond_stack" :
6491 "too many conditionals closed in include file")
6492 if "@saved_cond_stack" ne "@cond_stack";
6494 return ($comment, $result_vars, $result_rules);
6495 }
6498 # $CONTENTS
6499 # &file_contents ($BASENAME, $WHERE, [%TRANSFORM])
6500 # ------------------------------------------------
6501 # Return contents of a file from $libdir/am, automatically skipping
6502 # macros or rules which are already known.
6503 sub file_contents ($$%)
6504 {
6505 my ($basename, $where, %transform) = @_;
6506 my ($comments, $variables, $rules) =
6507 file_contents_internal (1, "$libdir/am/$basename.am", $where,
6508 %transform);
6509 return "$comments$variables$rules";
6510 }
6513 # &append_exeext ($MACRO)
6514 # -----------------------
6515 # Macro is an Automake magic macro which primary is PROGRAMS, e.g.
6516 # bin_PROGRAMS. Make sure these programs have $(EXEEXT) appended.
6517 sub append_exeext ($)
6518 {
6519 my ($macro) = @_;
6521 prog_error "append_exeext ($macro)"
6522 unless $macro =~ /_PROGRAMS$/;
6524 transform_variable_recursively
6525 ($macro, $macro, 'am__EXEEXT', 0, INTERNAL,
6526 sub {
6527 my ($subvar, $val, $cond, $full_cond) = @_;
6528 # Append $(EXEEXT) unless the user did it already, or it's a
6529 # @substitution@.
6530 $val .= '$(EXEEXT)' unless $val =~ /(?:\$\(EXEEXT\)$|^[@]\w+[@]$)/;
6531 return $val;
6532 });
6533 }
6536 # @PREFIX
6537 # &am_primary_prefixes ($PRIMARY, $CAN_DIST, @PREFIXES)
6538 # -----------------------------------------------------
6539 # Find all variable prefixes that are used for install directories. A
6540 # prefix `zar' qualifies iff:
6541 #
6542 # * `zardir' is a variable.
6543 # * `zar_PRIMARY' is a variable.
6544 #
6545 # As a side effect, it looks for misspellings. It is an error to have
6546 # a variable ending in a "reserved" suffix whose prefix is unknown, e.g.
6547 # "bin_PROGRAMS". However, unusual prefixes are allowed if a variable
6548 # of the same name (with "dir" appended) exists. For instance, if the
6549 # variable "zardir" is defined, then "zar_PROGRAMS" becomes valid.
6550 # This is to provide a little extra flexibility in those cases which
6551 # need it.
6552 sub am_primary_prefixes ($$@)
6553 {
6554 my ($primary, $can_dist, @prefixes) = @_;
6556 local $_;
6557 my %valid = map { $_ => 0 } @prefixes;
6558 $valid{'EXTRA'} = 0;
6559 foreach my $var (variables $primary)
6560 {
6561 # Automake is allowed to define variables that look like primaries
6562 # but which aren't. E.g. INSTALL_sh_DATA.
6563 # Autoconf can also define variables like INSTALL_DATA, so
6564 # ignore all configure variables (at least those which are not
6565 # redefined in Makefile.am).
6566 # FIXME: We should make sure that these variables are not
6567 # conditionally defined (or else adjust the condition below).
6568 my $def = $var->def (TRUE);
6569 next if $def && $def->owner != VAR_MAKEFILE;
6571 my $varname = $var->name;
6573 if ($varname =~ /^(nobase_)?(dist_|nodist_)?(.*)_[[:alnum:]]+$/)
6574 {
6575 my ($base, $dist, $X) = ($1 || '', $2 || '', $3 || '');
6576 if ($dist ne '' && ! $can_dist)
6577 {
6578 err_var ($var,
6579 "invalid variable `$varname': `dist' is forbidden");
6580 }
6581 # Standard directories must be explicitly allowed.
6582 elsif (! defined $valid{$X} && exists $standard_prefix{$X})
6583 {
6584 err_var ($var,
6585 "`${X}dir' is not a legitimate directory " .
6586 "for `$primary'");
6587 }
6588 # A not explicitly valid directory is allowed if Xdir is defined.
6589 elsif (! defined $valid{$X} &&
6590 $var->requires_variables ("`$varname' is used", "${X}dir"))
6591 {
6592 # Nothing to do. Any error message has been output
6593 # by $var->requires_variables.
6594 }
6595 else
6596 {
6597 # Ensure all extended prefixes are actually used.
6598 $valid{"$base$dist$X"} = 1;
6599 }
6600 }
6601 else
6602 {
6603 prog_error "unexpected variable name: $varname";
6604 }
6605 }
6607 # Return only those which are actually defined.
6608 return sort grep { var ($_ . '_' . $primary) } keys %valid;
6609 }
6612 # Handle `where_HOW' variable magic. Does all lookups, generates
6613 # install code, and possibly generates code to define the primary
6614 # variable. The first argument is the name of the .am file to munge,
6615 # the second argument is the primary variable (e.g. HEADERS), and all
6616 # subsequent arguments are possible installation locations.
6617 #
6618 # Returns list of [$location, $value] pairs, where
6619 # $value's are the values in all where_HOW variable, and $location
6620 # there associated location (the place here their parent variables were
6621 # defined).
6622 #
6623 # FIXME: this should be rewritten to be cleaner. It should be broken
6624 # up into multiple functions.
6625 #
6626 # Usage is: am_install_var (OPTION..., file, HOW, where...)
6627 sub am_install_var
6628 {
6629 my (@args) = @_;
6631 my $do_require = 1;
6632 my $can_dist = 0;
6633 my $default_dist = 0;
6634 while (@args)
6635 {
6636 if ($args[0] eq '-noextra')
6637 {
6638 $do_require = 0;
6639 }
6640 elsif ($args[0] eq '-candist')
6641 {
6642 $can_dist = 1;
6643 }
6644 elsif ($args[0] eq '-defaultdist')
6645 {
6646 $default_dist = 1;
6647 $can_dist = 1;
6648 }
6649 elsif ($args[0] !~ /^-/)
6650 {
6651 last;
6652 }
6653 shift (@args);
6654 }
6656 my ($file, $primary, @prefix) = @args;
6658 # Now that configure substitutions are allowed in where_HOW
6659 # variables, it is an error to actually define the primary. We
6660 # allow `JAVA', as it is customarily used to mean the Java
6661 # interpreter. This is but one of several Java hacks. Similarly,
6662 # `PYTHON' is customarily used to mean the Python interpreter.
6663 reject_var $primary, "`$primary' is an anachronism"
6664 unless $primary eq 'JAVA' || $primary eq 'PYTHON';
6666 # Get the prefixes which are valid and actually used.
6667 @prefix = am_primary_prefixes ($primary, $can_dist, @prefix);
6669 # If a primary includes a configure substitution, then the EXTRA_
6670 # form is required. Otherwise we can't properly do our job.
6671 my $require_extra;
6673 my @used = ();
6674 my @result = ();
6676 foreach my $X (@prefix)
6677 {
6678 my $nodir_name = $X;
6679 my $one_name = $X . '_' . $primary;
6680 my $one_var = var $one_name;
6682 my $strip_subdir = 1;
6683 # If subdir prefix should be preserved, do so.
6684 if ($nodir_name =~ /^nobase_/)
6685 {
6686 $strip_subdir = 0;
6687 $nodir_name =~ s/^nobase_//;
6688 }
6690 # If files should be distributed, do so.
6691 my $dist_p = 0;
6692 if ($can_dist)
6693 {
6694 $dist_p = (($default_dist && $nodir_name !~ /^nodist_/)
6695 || (! $default_dist && $nodir_name =~ /^dist_/));
6696 $nodir_name =~ s/^(dist|nodist)_//;
6697 }
6700 # Use the location of the currently processed variable.
6701 # We are not processing a particular condition, so pick the first
6702 # available.
6703 my $tmpcond = $one_var->conditions->one_cond;
6704 my $where = $one_var->rdef ($tmpcond)->location->clone;
6706 # Append actual contents of where_PRIMARY variable to
6707 # @result, skipping @substitutions@.
6708 foreach my $locvals ($one_var->value_as_list_recursive (location => 1))
6709 {
6710 my ($loc, $value) = @$locvals;
6711 # Skip configure substitutions.
6712 if ($value =~ /^\@.*\@$/)
6713 {
6714 if ($nodir_name eq 'EXTRA')
6715 {
6716 error ($where,
6717 "`$one_name' contains configure substitution, "
6718 . "but shouldn't");
6719 }
6720 # Check here to make sure variables defined in
6721 # configure.ac do not imply that EXTRA_PRIMARY
6722 # must be defined.
6723 elsif (! defined $configure_vars{$one_name})
6724 {
6725 $require_extra = $one_name
6726 if $do_require;
6727 }
6728 }
6729 else
6730 {
6731 push (@result, $locvals);
6732 }
6733 }
6734 # A blatant hack: we rewrite each _PROGRAMS primary to include
6735 # EXEEXT.
6736 append_exeext ($one_name)
6737 if $primary eq 'PROGRAMS';
6738 # "EXTRA" shouldn't be used when generating clean targets,
6739 # all, or install targets. We used to warn if EXTRA_FOO was
6740 # defined uselessly, but this was annoying.
6741 next
6742 if $nodir_name eq 'EXTRA';
6744 if ($nodir_name eq 'check')
6745 {
6746 push (@check, '$(' . $one_name . ')');
6747 }
6748 else
6749 {
6750 push (@used, '$(' . $one_name . ')');
6751 }
6753 # Is this to be installed?
6754 my $install_p = $nodir_name ne 'noinst' && $nodir_name ne 'check';
6756 # If so, with install-exec? (or install-data?).
6757 my $exec_p = ($nodir_name =~ /$EXEC_DIR_PATTERN/o);
6759 my $check_options_p = $install_p && !! option 'std-options';
6761 # Use the location of the currently processed variable as context.
6762 $where->push_context ("while processing `$one_name'");
6764 # The variable containing all file to distribute.
6765 my $distvar = "\$($one_name)";
6766 $distvar = shadow_unconditionally ($one_name, $where)
6767 if ($dist_p && $one_var->has_conditional_contents);
6769 # Singular form of $PRIMARY.
6770 (my $one_primary = $primary) =~ s/S$//;
6771 $output_rules .= &file_contents ($file, $where,
6772 PRIMARY => $primary,
6773 ONE_PRIMARY => $one_primary,
6774 DIR => $X,
6775 NDIR => $nodir_name,
6776 BASE => $strip_subdir,
6778 EXEC => $exec_p,
6779 INSTALL => $install_p,
6780 DIST => $dist_p,
6781 DISTVAR => $distvar,
6782 'CK-OPTS' => $check_options_p);
6783 }
6785 # The JAVA variable is used as the name of the Java interpreter.
6786 # The PYTHON variable is used as the name of the Python interpreter.
6787 if (@used && $primary ne 'JAVA' && $primary ne 'PYTHON')
6788 {
6789 # Define it.
6790 define_pretty_variable ($primary, TRUE, INTERNAL, @used);
6791 $output_vars .= "\n";
6792 }
6794 err_var ($require_extra,
6795 "`$require_extra' contains configure substitution,\n"
6796 . "but `EXTRA_$primary' not defined")
6797 if ($require_extra && ! var ('EXTRA_' . $primary));
6799 # Push here because PRIMARY might be configure time determined.
6800 push (@all, '$(' . $primary . ')')
6801 if @used && $primary ne 'JAVA' && $primary ne 'PYTHON';
6803 # Make the result unique. This lets the user use conditionals in
6804 # a natural way, but still lets us program lazily -- we don't have
6805 # to worry about handling a particular object more than once.
6806 # We will keep only one location per object.
6807 my %result = ();
6808 for my $pair (@result)
6809 {
6810 my ($loc, $val) = @$pair;
6811 $result{$val} = $loc;
6812 }
6813 my @l = sort keys %result;
6814 return map { [$result{$_}->clone, $_] } @l;
6815 }
6818 ################################################################
6820 # Each key in this hash is the name of a directory holding a
6821 # Makefile.in. These variables are local to `is_make_dir'.
6822 my %make_dirs = ();
6823 my $make_dirs_set = 0;
6825 sub is_make_dir
6826 {
6827 my ($dir) = @_;
6828 if (! $make_dirs_set)
6829 {
6830 foreach my $iter (@configure_input_files)
6831 {
6832 $make_dirs{dirname ($iter)} = 1;
6833 }
6834 # We also want to notice Makefile.in's.
6835 foreach my $iter (@other_input_files)
6836 {
6837 if ($iter =~ /Makefile\.in$/)
6838 {
6839 $make_dirs{dirname ($iter)} = 1;
6840 }
6841 }
6842 $make_dirs_set = 1;
6843 }
6844 return defined $make_dirs{$dir};
6845 }
6847 ################################################################
6849 # Find the aux dir. This should match the algorithm used by
6850 # ./configure. (See the Autoconf documentation for for
6851 # AC_CONFIG_AUX_DIR.)
6852 sub locate_aux_dir ()
6853 {
6854 if (! $config_aux_dir_set_in_configure_ac)
6855 {
6856 # The default auxiliary directory is the first
6857 # of ., .., or ../.. that contains install-sh.
6858 # Assume . if install-sh doesn't exist yet.
6859 for my $dir (qw (. .. ../..))
6860 {
6861 if (-f "$dir/install-sh")
6862 {
6863 $config_aux_dir = $dir;
6864 last;
6865 }
6866 }
6867 $config_aux_dir = '.' unless $config_aux_dir;
6868 }
6869 # Avoid unsightly '/.'s.
6870 $am_config_aux_dir =
6871 '$(top_srcdir)' . ($config_aux_dir eq '.' ? "" : "/$config_aux_dir");
6872 $am_config_aux_dir =~ s,/*$,,;
6873 }
6876 # &maybe_push_required_file ($DIR, $FILE, $FULLFILE)
6877 # --------------------------------------------------
6878 # See if we want to push this file onto dist_common. This function
6879 # encodes the rules for deciding when to do so.
6880 sub maybe_push_required_file
6881 {
6882 my ($dir, $file, $fullfile) = @_;
6884 if ($dir eq $relative_dir)
6885 {
6886 push_dist_common ($file);
6887 return 1;
6888 }
6889 elsif ($relative_dir eq '.' && ! &is_make_dir ($dir))
6890 {
6891 # If we are doing the topmost directory, and the file is in a
6892 # subdir which does not have a Makefile, then we distribute it
6893 # here.
6895 # If a required file is above the source tree, it is important
6896 # to prefix it with `$(srcdir)' so that no VPATH search is
6897 # performed. Otherwise problems occur with Make implementations
6898 # that rewrite and simplify rules whose dependencies are found in a
6899 # VPATH location. Here is an example with OSF1/Tru64 Make.
6900 #
6901 # % cat Makefile
6902 # VPATH = sub
6903 # distdir: ../a
6904 # echo ../a
6905 # % ls
6906 # Makefile a
6907 # % make
6908 # echo a
6909 # a
6910 #
6911 # Dependency `../a' was found in `sub/../a', but this make
6912 # implementation simplified it as `a'. (Note that the sub/
6913 # directory does not even exist.)
6914 #
6915 # This kind of VPATH rewriting seems hard to cancel. The
6916 # distdir.am hack against VPATH rewriting works only when no
6917 # simplification is done, i.e., for dependencies which are in
6918 # subdirectories, not in enclosing directories. Hence, in
6919 # the latter case we use a full path to make sure no VPATH
6920 # search occurs.
6921 $fullfile = '$(srcdir)/' . $fullfile
6922 if $dir =~ m,^\.\.(?:$|/),;
6924 push_dist_common ($fullfile);
6925 return 1;
6926 }
6927 return 0;
6928 }
6931 # If a file name appears as a key in this hash, then it has already
6932 # been checked for. This allows us not to report the same error more
6933 # than once.
6934 my %required_file_not_found = ();
6936 # &require_file_internal ($WHERE, $MYSTRICT, $DIRECTORY, @FILES)
6937 # --------------------------------------------------------------
6938 # Verify that the file must exist in $DIRECTORY, or install it.
6939 # $MYSTRICT is the strictness level at which this file becomes required.
6940 sub require_file_internal ($$$@)
6941 {
6942 my ($where, $mystrict, $dir, @files) = @_;
6944 foreach my $file (@files)
6945 {
6946 my $fullfile = "$dir/$file";
6947 my $found_it = 0;
6948 my $dangling_sym = 0;
6950 if (-l $fullfile && ! -f $fullfile)
6951 {
6952 $dangling_sym = 1;
6953 }
6954 elsif (dir_has_case_matching_file ($dir, $file))
6955 {
6956 $found_it = 1;
6957 maybe_push_required_file ($dir, $file, $fullfile);
6958 }
6960 # `--force-missing' only has an effect if `--add-missing' is
6961 # specified.
6962 if ($found_it && (! $add_missing || ! $force_missing))
6963 {
6964 next;
6965 }
6966 else
6967 {
6968 # If we've already looked for it, we're done. You might
6969 # wonder why we don't do this before searching for the
6970 # file. If we do that, then something like
6971 # AC_OUTPUT(subdir/foo foo) will fail to put foo.in into
6972 # DIST_COMMON.
6973 if (! $found_it)
6974 {
6975 next if defined $required_file_not_found{$fullfile};
6976 $required_file_not_found{$fullfile} = 1;
6977 }
6979 if ($strictness >= $mystrict)
6980 {
6981 if ($dangling_sym && $add_missing)
6982 {
6983 unlink ($fullfile);
6984 }
6986 my $trailer = '';
6987 my $suppress = 0;
6989 # Only install missing files according to our desired
6990 # strictness level.
6991 my $message = "required file `$fullfile' not found";
6992 if ($add_missing)
6993 {
6994 if (-f ("$libdir/$file"))
6995 {
6996 $suppress = 1;
6998 # Install the missing file. Symlink if we
6999 # can, copy if we must. Note: delete the file
7000 # first, in case it is a dangling symlink.
7001 $message = "installing `$fullfile'";
7002 # Windows Perl will hang if we try to delete a
7003 # file that doesn't exist.
7004 unlink ($fullfile) if -f $fullfile;
7005 if ($symlink_exists && ! $copy_missing)
7006 {
7007 if (! symlink ("$libdir/$file", $fullfile))
7008 {
7009 $suppress = 0;
7010 $trailer = "; error while making link: $!";
7011 }
7012 }
7013 elsif (system ('cp', "$libdir/$file", $fullfile))
7014 {
7015 $suppress = 0;
7016 $trailer = "\n error while copying";
7017 }
7018 reset_dir_cache ($dir);
7019 }
7021 if (! maybe_push_required_file (dirname ($fullfile),
7022 $file, $fullfile))
7023 {
7024 if (! $found_it && ! $automake_will_process_aux_dir)
7025 {
7026 # We have added the file but could not push it
7027 # into DIST_COMMON, probably because this is
7028 # an auxiliary file and we are not processing
7029 # the top level Makefile. Furthermore Automake
7030 # hasn't been asked to create the Makefile.in
7031 # that distribute the aux dir files.
7032 error ($where, 'Please make a full run of automake'
7033 . " so $fullfile gets distributed.");
7034 }
7035 }
7036 }
7038 # If --force-missing was specified, and we have
7039 # actually found the file, then do nothing.
7040 next
7041 if $found_it && $force_missing;
7043 # If we couldn' install the file, but it is a target in
7044 # the Makefile, don't print anything. This allows files
7045 # like README, AUTHORS, or THANKS to be generated.
7046 next
7047 if !$suppress && rule $file;
7049 msg ($suppress ? 'note' : 'error', $where, "$message$trailer");
7050 }
7051 }
7052 }
7053 }
7055 # &require_file ($WHERE, $MYSTRICT, @FILES)
7056 # -----------------------------------------
7057 sub require_file ($$@)
7058 {
7059 my ($where, $mystrict, @files) = @_;
7060 require_file_internal ($where, $mystrict, $relative_dir, @files);
7061 }
7063 # &require_file_with_macro ($COND, $MACRO, $MYSTRICT, @FILES)
7064 # -----------------------------------------------------------
7065 sub require_file_with_macro ($$$@)
7066 {
7067 my ($cond, $macro, $mystrict, @files) = @_;
7068 $macro = rvar ($macro) unless ref $macro;
7069 require_file ($macro->rdef ($cond)->location, $mystrict, @files);
7070 }
7073 # &require_conf_file ($WHERE, $MYSTRICT, @FILES)
7074 # ----------------------------------------------
7075 # Looks in configuration path, as specified by AC_CONFIG_AUX_DIR.
7076 sub require_conf_file ($$@)
7077 {
7078 my ($where, $mystrict, @files) = @_;
7079 require_file_internal ($where, $mystrict, $config_aux_dir, @files);
7080 }
7083 # &require_conf_file_with_macro ($COND, $MACRO, $MYSTRICT, @FILES)
7084 # ----------------------------------------------------------------
7085 sub require_conf_file_with_macro ($$$@)
7086 {
7087 my ($cond, $macro, $mystrict, @files) = @_;
7088 require_conf_file (rvar ($macro)->rdef ($cond)->location,
7089 $mystrict, @files);
7090 }
7092 ################################################################
7094 # &require_build_directory ($DIRECTORY)
7095 # ------------------------------------
7096 # Emit rules to create $DIRECTORY if needed, and return
7097 # the file that any target requiring this directory should be made
7098 # dependent upon.
7099 sub require_build_directory ($)
7100 {
7101 my $directory = shift;
7102 my $dirstamp = "$directory/\$(am__dirstamp)";
7104 # Don't emit the rule twice.
7105 if (! defined $directory_map{$directory})
7106 {
7107 $directory_map{$directory} = 1;
7109 # Set a variable for the dirstamp basename.
7110 define_pretty_variable ('am__dirstamp', TRUE, INTERNAL,
7111 '$(am__leading_dot)dirstamp');
7113 # Directory must be removed by `make distclean'.
7114 $clean_files{$dirstamp} = DIST_CLEAN;
7116 $output_rules .= ("$dirstamp:\n"
7117 . "\t\@\$(mkdir_p) $directory\n"
7118 . "\t\@: > $dirstamp\n");
7119 }
7121 return $dirstamp;
7122 }
7124 # &require_build_directory_maybe ($FILE)
7125 # --------------------------------------
7126 # If $FILE lies in a subdirectory, emit a rule to create this
7127 # directory and return the file that $FILE should be made
7128 # dependent upon. Otherwise, just return the empty string.
7129 sub require_build_directory_maybe ($)
7130 {
7131 my $file = shift;
7132 my $directory = dirname ($file);
7134 if ($directory ne '.')
7135 {
7136 return require_build_directory ($directory);
7137 }
7138 else
7139 {
7140 return '';
7141 }
7142 }
7144 ################################################################
7146 # Push a list of files onto dist_common.
7147 sub push_dist_common
7148 {
7149 prog_error "push_dist_common run after handle_dist"
7150 if $handle_dist_run;
7151 Automake::Variable::define ('DIST_COMMON', VAR_AUTOMAKE, '+', TRUE, "@_",
7152 '', INTERNAL, VAR_PRETTY);
7153 }
7156 ################################################################
7158 # generate_makefile ($MAKEFILE_AM, $MAKEFILE_IN)
7159 # ----------------------------------------------
7160 # Generate a Makefile.in given the name of the corresponding Makefile and
7161 # the name of the file output by config.status.
7162 sub generate_makefile ($$)
7163 {
7164 my ($makefile_am, $makefile_in) = @_;
7166 # Reset all the Makefile.am related variables.
7167 initialize_per_input;
7169 # AUTOMAKE_OPTIONS can contains -W flags to disable or enable
7170 # warnings for this file. So hold any warning issued before
7171 # we have processed AUTOMAKE_OPTIONS.
7172 buffer_messages ('warning');
7174 # Name of input file ("Makefile.am") and output file
7175 # ("Makefile.in"). These have no directory components.
7176 $am_file_name = basename ($makefile_am);
7177 $in_file_name = basename ($makefile_in);
7179 # $OUTPUT is encoded. If it contains a ":" then the first element
7180 # is the real output file, and all remaining elements are input
7181 # files. We don't scan or otherwise deal with these input files,
7182 # other than to mark them as dependencies. See
7183 # &scan_autoconf_files for details.
7184 my ($makefile, @inputs) = split (/:/, $output_files{$makefile_in});
7186 $relative_dir = dirname ($makefile);
7187 $am_relative_dir = dirname ($makefile_am);
7189 read_main_am_file ($makefile_am);
7190 if (handle_options)
7191 {
7192 # Process buffered warnings.
7193 flush_messages;
7194 # Fatal error. Just return, so we can continue with next file.
7195 return;
7196 }
7197 # Process buffered warnings.
7198 flush_messages;
7200 # There are a few install-related variables that you should not define.
7201 foreach my $var ('PRE_INSTALL', 'POST_INSTALL', 'NORMAL_INSTALL')
7202 {
7203 my $v = var $var;
7204 if ($v)
7205 {
7206 my $def = $v->def (TRUE);
7207 prog_error "$var not defined in condition TRUE"
7208 unless $def;
7209 reject_var $var, "`$var' should not be defined"
7210 if $def->owner != VAR_AUTOMAKE;
7211 }
7212 }
7214 # Catch some obsolete variables.
7215 msg_var ('obsolete', 'INCLUDES',
7216 "`INCLUDES' is the old name for `AM_CPPFLAGS' (or `*_CPPFLAGS')")
7217 if var ('INCLUDES');
7219 # Must do this after reading .am file.
7220 define_variable ('subdir', $relative_dir, INTERNAL);
7222 # If DIST_SUBDIRS is defined, make sure SUBDIRS is, so that
7223 # recursive rules are enabled.
7224 define_pretty_variable ('SUBDIRS', TRUE, INTERNAL, '')
7225 if var 'DIST_SUBDIRS' && ! var 'SUBDIRS';
7227 # Check first, because we might modify some state.
7228 check_cygnus;
7229 check_gnu_standards;
7230 check_gnits_standards;
7232 handle_configure ($makefile_am, $makefile_in, $makefile, @inputs);
7233 handle_gettext;
7234 handle_libraries;
7235 handle_ltlibraries;
7236 handle_programs;
7237 handle_scripts;
7239 # These must be run after all the sources are scanned. They
7240 # use variables defined by &handle_libraries, &handle_ltlibraries,
7241 # or &handle_programs.
7242 handle_compile;
7243 handle_languages;
7244 handle_libtool;
7246 # Variables used by distdir.am and tags.am.
7247 define_pretty_variable ('SOURCES', TRUE, INTERNAL, @sources);
7248 if (! option 'no-dist')
7249 {
7250 define_pretty_variable ('DIST_SOURCES', TRUE, INTERNAL, @dist_sources);
7251 }
7253 handle_multilib;
7254 handle_texinfo;
7255 handle_emacs_lisp;
7256 handle_python;
7257 handle_java;
7258 handle_man_pages;
7259 handle_data;
7260 handle_headers;
7261 handle_subdirs;
7262 handle_tags;
7263 handle_minor_options;
7264 handle_tests;
7266 # This must come after most other rules.
7267 handle_dist;
7269 handle_footer;
7270 do_check_merge_target;
7271 handle_all ($makefile);
7273 # FIXME: Gross!
7274 if (var ('lib_LTLIBRARIES') && var ('bin_PROGRAMS'))
7275 {
7276 $output_rules .= "install-binPROGRAMS: install-libLTLIBRARIES\n\n";
7277 }
7279 handle_install;
7280 handle_clean ($makefile);
7281 handle_factored_dependencies;
7283 # Comes last, because all the above procedures may have
7284 # defined or overridden variables.
7285 $output_vars .= output_variables;
7287 check_typos;
7289 my ($out_file) = $output_directory . '/' . $makefile_in;
7291 if ($exit_code != 0)
7292 {
7293 verb "not writing $out_file because of earlier errors";
7294 return;
7295 }
7297 if (! -d ($output_directory . '/' . $am_relative_dir))
7298 {
7299 mkdir ($output_directory . '/' . $am_relative_dir, 0755);
7300 }
7302 # We make sure that `all:' is the first target.
7303 my $output =
7304 "$output_vars$output_all$output_header$output_rules$output_trailer";
7306 # Decide whether we must update the output file or not.
7307 # We have to update in the following situations.
7308 # * $force_generation is set.
7309 # * any of the output dependencies is younger than the output
7310 # * the contents of the output is different (this can happen
7311 # if the project has been populated with a file listed in
7312 # @common_files since the last run).
7313 # Output's dependencies are split in two sets:
7314 # * dependencies which are also configure dependencies
7315 # These do not change between each Makefile.am
7316 # * other dependencies, specific to the Makefile.am being processed
7317 # (such as the Makefile.am itself, or any Makefile fragment
7318 # it includes).
7319 my $timestamp = mtime $out_file;
7320 if (! $force_generation
7321 && $configure_deps_greatest_timestamp < $timestamp
7322 && $output_deps_greatest_timestamp < $timestamp
7323 && $output eq contents ($out_file))
7324 {
7325 verb "$out_file unchanged";
7326 # No need to update.
7327 return;
7328 }
7330 if (-e $out_file)
7331 {
7332 unlink ($out_file)
7333 or fatal "cannot remove $out_file: $!\n";
7334 }
7336 my $gm_file = new Automake::XFile "> $out_file";
7337 verb "creating $out_file";
7338 print $gm_file $output;
7339 }
7341 ################################################################
7346 ################################################################
7348 # Print usage information.
7349 sub usage ()
7350 {
7351 print "Usage: $0 [OPTION] ... [Makefile]...
7353 Generate Makefile.in for configure from Makefile.am.
7355 Operation modes:
7356 --help print this help, then exit
7357 --version print version number, then exit
7358 -v, --verbose verbosely list files processed
7359 --no-force only update Makefile.in's that are out of date
7360 -W, --warnings=CATEGORY report the warnings falling in CATEGORY
7362 Dependency tracking:
7363 -i, --ignore-deps disable dependency tracking code
7364 --include-deps enable dependency tracking code
7366 Flavors:
7367 --cygnus assume program is part of Cygnus-style tree
7368 --foreign set strictness to foreign
7369 --gnits set strictness to gnits
7370 --gnu set strictness to gnu
7372 Library files:
7373 -a, --add-missing add missing standard files to package
7374 --libdir=DIR directory storing library files
7375 -c, --copy with -a, copy missing files (default is symlink)
7376 -f, --force-missing force update of standard files
7378 ";
7379 Automake::ChannelDefs::usage;
7381 my ($last, @lcomm);
7382 $last = '';
7383 foreach my $iter (sort ((@common_files, @common_sometimes)))
7384 {
7385 push (@lcomm, $iter) unless $iter eq $last;
7386 $last = $iter;
7387 }
7389 my @four;
7390 print "\nFiles which are automatically distributed, if found:\n";
7391 format USAGE_FORMAT =
7392 @<<<<<<<<<<<<<<<< @<<<<<<<<<<<<<<<< @<<<<<<<<<<<<<<<< @<<<<<<<<<<<<<<<<
7393 $four[0], $four[1], $four[2], $four[3]
7394 .
7395 $~ = "USAGE_FORMAT";
7397 my $cols = 4;
7398 my $rows = int(@lcomm / $cols);
7399 my $rest = @lcomm % $cols;
7401 if ($rest)
7402 {
7403 $rows++;
7404 }
7405 else
7406 {
7407 $rest = $cols;
7408 }
7410 for (my $y = 0; $y < $rows; $y++)
7411 {
7412 @four = ("", "", "", "");
7413 for (my $x = 0; $x < $cols; $x++)
7414 {
7415 last if $y + 1 == $rows && $x == $rest;
7417 my $idx = (($x > $rest)
7418 ? ($rows * $rest + ($rows - 1) * ($x - $rest))
7419 : ($rows * $x));
7421 $idx += $y;
7422 $four[$x] = $lcomm[$idx];
7423 }
7424 write;
7425 }
7427 print "\nReport bugs to <bug-automake\@gnu.org>.\n";
7429 # --help always returns 0 per GNU standards.
7430 exit 0;
7431 }
7434 # &version ()
7435 # -----------
7436 # Print version information
7437 sub version ()
7438 {
7439 print <<EOF;
7440 automake (GNU $PACKAGE) $VERSION
7441 Written by Tom Tromey <tromey\@redhat.com>
7442 and Alexandre Duret-Lutz <adl\@gnu.org>.
7444 Copyright 2004 Free Software Foundation, Inc.
7445 This is free software; see the source for copying conditions. There is NO
7446 warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
7447 EOF
7448 # --version always returns 0 per GNU standards.
7449 exit 0;
7450 }
7452 ################################################################
7454 # Parse command line.
7455 sub parse_arguments ()
7456 {
7457 # Start off as gnu.
7458 set_strictness ('gnu');
7460 my $cli_where = new Automake::Location;
7461 my %cli_options =
7462 (
7463 'libdir=s' => \$libdir,
7464 'gnu' => sub { set_strictness ('gnu'); },
7465 'gnits' => sub { set_strictness ('gnits'); },
7466 'cygnus' => sub { set_global_option ('cygnus', $cli_where); },
7467 'foreign' => sub { set_strictness ('foreign'); },
7468 'include-deps' => sub { unset_global_option ('no-dependencies'); },
7469 'i|ignore-deps' => sub { set_global_option ('no-dependencies',
7470 $cli_where); },
7471 'no-force' => sub { $force_generation = 0; },
7472 'f|force-missing' => \$force_missing,
7473 'o|output-dir=s' => \$output_directory,
7474 'a|add-missing' => \$add_missing,
7475 'c|copy' => \$copy_missing,
7476 'v|verbose' => sub { setup_channel 'verb', silent => 0; },
7477 'W|warnings=s' => \&parse_warnings,
7478 # These long options (--Werror and --Wno-error) for backward
7479 # compatibility. Use -Werror and -Wno-error today.
7480 'Werror' => sub { parse_warnings 'W', 'error'; },
7481 'Wno-error' => sub { parse_warnings 'W', 'no-error'; },
7482 );
7483 use Getopt::Long;
7484 Getopt::Long::config ("bundling", "pass_through");
7486 # See if --version or --help is used. We want to process these before
7487 # anything else because the GNU Coding Standards require us to
7488 # `exit 0' after processing these options, and we can't guarantee this
7489 # if we treat other options first. (Handling other options first
7490 # could produce error diagnostics, and in this condition it is
7491 # confusing if Automake does `exit 0'.)
7492 my %cli_options_1st_pass =
7493 (
7494 'version' => \&version,
7495 'help' => \&usage,
7496 # Recognize all other options (and their arguments) but do nothing.
7497 map { $_ => sub {} } (keys %cli_options)
7498 );
7499 my @ARGV_backup = @ARGV;
7500 Getopt::Long::GetOptions %cli_options_1st_pass
7501 or exit 1;
7502 @ARGV = @ARGV_backup;
7504 # Now *really* process the options. This time we know that --help
7505 # and --version are not present, but we specify them nonetheless so
7506 # that ambiguous abbreviation are diagnosed.
7507 Getopt::Long::GetOptions %cli_options, 'version' => sub {}, 'help' => sub {}
7508 or exit 1;
7510 if (defined $output_directory)
7511 {
7512 msg 'obsolete', "`--output-dir' is deprecated\n";
7513 }
7514 else
7515 {
7516 # In the next release we'll remove this entirely.
7517 $output_directory = '.';
7518 }
7520 return unless @ARGV;
7522 if ($ARGV[0] =~ /^-./)
7523 {
7524 my %argopts;
7525 for my $k (keys %cli_options)
7526 {
7527 if ($k =~ /(.*)=s$/)
7528 {
7529 map { $argopts{(length ($_) == 1)
7530 ? "-$_" : "--$_" } = 1; } (split (/\|/, $1));
7531 }
7532 }
7533 if ($ARGV[0] eq '--')
7534 {
7535 shift @ARGV;
7536 }
7537 elsif (exists $argopts{$ARGV[0]})
7538 {
7539 fatal ("option `$ARGV[0]' requires an argument\n"
7540 . "Try `$0 --help' for more information.");
7541 }
7542 else
7543 {
7544 fatal ("unrecognized option `$ARGV[0]'.\n"
7545 . "Try `$0 --help' for more information.");
7546 }
7547 }
7549 my $errspec = 0;
7550 foreach my $arg (@ARGV)
7551 {
7552 fatal ("empty argument\nTry `$0 --help' for more information.")
7553 if ($arg eq '');
7555 # Handle $local:$input syntax.
7556 my ($local, @rest) = split (/:/, $arg);
7557 @rest = ("$local.in",) unless @rest;
7558 my $input = locate_am @rest;
7559 if ($input)
7560 {
7561 push @input_files, $input;
7562 $output_files{$input} = join (':', ($local, @rest));
7563 }
7564 else
7565 {
7566 error "no Automake input file found for `$arg'";
7567 $errspec = 1;
7568 }
7569 }
7570 fatal "no input file found among supplied arguments"
7571 if $errspec && ! @input_files;
7572 }
7574 ################################################################
7576 # Parse the WARNINGS environment variable.
7577 parse_WARNINGS;
7579 # Parse command line.
7580 parse_arguments;
7582 $configure_ac = require_configure_ac;
7584 # Do configure.ac scan only once.
7585 scan_autoconf_files;
7587 if (! @input_files)
7588 {
7589 my $msg = '';
7590 $msg = "\nDid you forget AC_CONFIG_FILES([Makefile]) in $configure_ac?"
7591 if -f 'Makefile.am';
7592 fatal ("no `Makefile.am' found for any configure output$msg");
7593 }
7595 # Now do all the work on each file.
7596 foreach my $file (@input_files)
7597 {
7598 ($am_file = $file) =~ s/\.in$//;
7599 if (! -f ($am_file . '.am'))
7600 {
7601 error "`$am_file.am' does not exist";
7602 }
7603 else
7604 {
7605 # Any warning setting now local to this Makefile.am.
7606 dup_channel_setup;
7608 generate_makefile ($am_file . '.am', $file);
7610 # Back out any warning setting.
7611 drop_channel_setup;
7612 }
7613 }
7615 exit $exit_code;
7618 ### Setup "GNU" style for perl-mode and cperl-mode.
7619 ## Local Variables:
7620 ## perl-indent-level: 2
7621 ## perl-continued-statement-offset: 2
7622 ## perl-continued-brace-offset: 0
7623 ## perl-brace-offset: 0
7624 ## perl-brace-imaginary-offset: 0
7625 ## perl-label-offset: -2
7626 ## cperl-indent-level: 2
7627 ## cperl-brace-offset: 0
7628 ## cperl-continued-brace-offset: 0
7629 ## cperl-label-offset: -2
7630 ## cperl-extra-newline-before-brace: t
7631 ## cperl-merge-trailing-else: nil
7632 ## cperl-continued-statement-offset: 2
7633 ## End: