| blob | 3d770617c8cb65a704ec3f9790437a3bcccecfd3 |
1 #!@PERL@ -w
2 # -*- perl -*-
3 # @configure_input@
5 eval 'case $# in 0) exec @PERL@ -S "$0";; *) exec @PERL@ -S "$0" "$@";; esac'
6 if 0;
8 # automake - create Makefile.in from Makefile.am
9 # Copyright (C) 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002,
10 # 2003, 2004 Free Software Foundation, Inc.
12 # This program is free software; you can redistribute it and/or modify
13 # it under the terms of the GNU General Public License as published by
14 # the Free Software Foundation; either version 2, or (at your option)
15 # any later version.
17 # This program is distributed in the hope that it will be useful,
18 # but WITHOUT ANY WARRANTY; without even the implied warranty of
19 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
20 # GNU General Public License for more details.
22 # You should have received a copy of the GNU General Public License
23 # along with this program; if not, write to the Free Software
24 # Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
25 # 02111-1307, USA.
27 # Originally written by David Mackenzie <djm@gnu.ai.mit.edu>.
28 # Perl reimplementation by Tom Tromey <tromey@redhat.com>.
30 package Language;
32 BEGIN
33 {
34 my $perllibdir = $ENV{'perllibdir'} || '@datadir@/@PACKAGE@-@APIVERSION@';
35 unshift @INC, (split ':', $perllibdir);
37 # Override SHELL. This is required on DJGPP so that system() uses
38 # bash, not COMMAND.COM which doesn't quote arguments properly.
39 # Other systems aren't expected to use $SHELL when Automake
40 # runs, but it should be safe to drop the `if DJGPP' guard if
41 # it turns up other systems need the same thing. After all,
42 # if SHELL is used, ./configure's SHELL is always better than
43 # the user's SHELL (which may be something like tcsh).
44 $ENV{'SHELL'} = '@SHELL@' if exists $ENV{'DJGPP'};
45 }
47 use Automake::Struct;
48 struct (# Short name of the language (c, f77...).
49 'name' => "\$",
50 # Nice name of the language (C, Fortran 77...).
51 'Name' => "\$",
53 # List of configure variables which must be defined.
54 'config_vars' => '@',
56 'ansi' => "\$",
57 # `pure' is `1' or `'. A `pure' language is one where, if
58 # all the files in a directory are of that language, then we
59 # do not require the C compiler or any code to call it.
60 'pure' => "\$",
62 'autodep' => "\$",
64 # Name of the compiling variable (COMPILE).
65 'compiler' => "\$",
66 # Content of the compiling variable.
67 'compile' => "\$",
68 # Flag to require compilation without linking (-c).
69 'compile_flag' => "\$",
70 'extensions' => '@',
71 # A subroutine to compute a list of possible extensions of
72 # the product given the input extensions.
73 # (defaults to a subroutine which returns ('.$(OBJEXT)', '.lo'))
74 'output_extensions' => "\$",
75 # A list of flag variables used in 'compile'.
76 # (defaults to [])
77 'flags' => "@",
79 # Any tag to pass to libtool while compiling.
80 'libtool_tag' => "\$",
82 # The file to use when generating rules for this language.
83 # The default is 'depend2'.
84 'rule_file' => "\$",
86 # Name of the linking variable (LINK).
87 'linker' => "\$",
88 # Content of the linking variable.
89 'link' => "\$",
91 # Name of the linker variable (LD).
92 'lder' => "\$",
93 # Content of the linker variable ($(CC)).
94 'ld' => "\$",
96 # Flag to specify the output file (-o).
97 'output_flag' => "\$",
98 '_finish' => "\$",
100 # This is a subroutine which is called whenever we finally
101 # determine the context in which a source file will be
102 # compiled.
103 '_target_hook' => "\$");
106 sub finish ($)
107 {
108 my ($self) = @_;
109 if (defined $self->_finish)
110 {
111 &{$self->_finish} ();
112 }
113 }
115 sub target_hook ($$$$)
116 {
117 my ($self) = @_;
118 if (defined $self->_target_hook)
119 {
120 &{$self->_target_hook} (@_);
121 }
122 }
124 package Automake;
126 use strict;
127 use Automake::Config;
128 use Automake::General;
129 use Automake::XFile;
130 use Automake::Channels;
131 use Automake::ChannelDefs;
132 use Automake::Configure_ac;
133 use Automake::FileUtils;
134 use Automake::Location;
135 use Automake::Condition qw/TRUE FALSE/;
136 use Automake::DisjConditions;
137 use Automake::Options;
138 use Automake::Version;
139 use Automake::Variable;
140 use Automake::VarDef;
141 use Automake::Rule;
142 use Automake::RuleDef;
143 use Automake::Wrap 'makefile_wrap';
144 use File::Basename;
145 use Carp;
147 ## ----------- ##
148 ## Constants. ##
149 ## ----------- ##
151 # Some regular expressions. One reason to put them here is that it
152 # makes indentation work better in Emacs.
154 # Writing singled-quoted-$-terminated regexes is a pain because
155 # perl-mode thinks of $' as the ${'} variable (instead of a $ followed
156 # by a closing quote. Letting perl-mode think the quote is not closed
157 # leads to all sort of misindentations. On the other hand, defining
158 # regexes as double-quoted strings is far less readable. So usually
159 # we will write:
160 #
161 # $REGEX = '^regex_value' . "\$";
163 my $IGNORE_PATTERN = '^\s*##([^#\n].*)?\n';
164 my $WHITE_PATTERN = '^\s*' . "\$";
165 my $COMMENT_PATTERN = '^#';
166 my $TARGET_PATTERN='[$a-zA-Z_.@%][-.a-zA-Z0-9_(){}/$+@%]*';
167 # A rule has three parts: a list of targets, a list of dependencies,
168 # and optionally actions.
169 my $RULE_PATTERN =
170 "^($TARGET_PATTERN(?:(?:\\\\\n|\\s)+$TARGET_PATTERN)*) *:([^=].*|)\$";
172 # Only recognize leading spaces, not leading tabs. If we recognize
173 # leading tabs here then we need to make the reader smarter, because
174 # otherwise it will think rules like `foo=bar; \' are errors.
175 my $ASSIGNMENT_PATTERN = '^ *([^ \t=:+]*)\s*([:+]?)=\s*(.*)' . "\$";
176 # This pattern recognizes a Gnits version id and sets $1 if the
177 # release is an alpha release. We also allow a suffix which can be
178 # used to extend the version number with a "fork" identifier.
179 my $GNITS_VERSION_PATTERN = '\d+\.\d+([a-z]|\.\d+)?(-[A-Za-z0-9]+)?';
181 my $IF_PATTERN = '^if\s+(!?)\s*([A-Za-z][A-Za-z0-9_]*)\s*(?:#.*)?' . "\$";
182 my $ELSE_PATTERN =
183 '^else(?:\s+(!?)\s*([A-Za-z][A-Za-z0-9_]*))?\s*(?:#.*)?' . "\$";
184 my $ENDIF_PATTERN =
185 '^endif(?:\s+(!?)\s*([A-Za-z][A-Za-z0-9_]*))?\s*(?:#.*)?' . "\$";
186 my $PATH_PATTERN = '(\w|[/.-])+';
187 # This will pass through anything not of the prescribed form.
188 my $INCLUDE_PATTERN = ('^include\s+'
189 . '((\$\(top_srcdir\)/' . $PATH_PATTERN . ')'
190 . '|(\$\(srcdir\)/' . $PATH_PATTERN . ')'
191 . '|([^/\$]' . $PATH_PATTERN . '))\s*(#.*)?' . "\$");
193 # Match `-d' as a command-line argument in a string.
194 my $DASH_D_PATTERN = "(^|\\s)-d(\\s|\$)";
195 # Directories installed during 'install-exec' phase.
196 my $EXEC_DIR_PATTERN =
197 '^(?:bin|sbin|libexec|sysconf|localstate|lib|pkglib|.*exec.*)' . "\$";
199 # Values for AC_CANONICAL_*
200 use constant AC_CANONICAL_HOST => 1;
201 use constant AC_CANONICAL_SYSTEM => 2;
203 # Values indicating when something should be cleaned.
204 use constant MOSTLY_CLEAN => 0;
205 use constant CLEAN => 1;
206 use constant DIST_CLEAN => 2;
207 use constant MAINTAINER_CLEAN => 3;
209 # Libtool files.
210 my @libtool_files = qw(ltmain.sh config.guess config.sub);
211 # ltconfig appears here for compatibility with old versions of libtool.
212 my @libtool_sometimes = qw(ltconfig ltcf-c.sh ltcf-cxx.sh ltcf-gcj.sh);
214 # Commonly found files we look for and automatically include in
215 # DISTFILES.
216 my @common_files =
217 (qw(ABOUT-GNU ABOUT-NLS AUTHORS BACKLOG COPYING COPYING.DOC COPYING.LIB
218 COPYING.LESSER ChangeLog INSTALL NEWS README THANKS TODO
219 ansi2knr.1 ansi2knr.c compile config.guess config.rpath config.sub
220 depcomp elisp-comp install-sh libversion.in mdate-sh missing
221 mkinstalldirs py-compile texinfo.tex ylwrap),
222 @libtool_files, @libtool_sometimes);
224 # Commonly used files we auto-include, but only sometimes. This list
225 # is used for the --help output only.
226 my @common_sometimes =
227 qw(aclocal.m4 acconfig.h config.h.top config.h.bot configure
228 configure.ac configure.in stamp-vti);
230 # Standard directories from the GNU Coding Standards, and additional
231 # pkg* directories from Automake. Stored in a hash for fast member check.
232 my %standard_prefix =
233 map { $_ => 1 } (qw(bin data exec include info lib libexec lisp
234 localstate man man1 man2 man3 man4 man5 man6
235 man7 man8 man9 oldinclude pkgdatadir
236 pkgincludedir pkglibdir sbin sharedstate
237 sysconf));
239 # Copyright on generated Makefile.ins.
240 my $gen_copyright = "\
241 # Copyright (C) 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002,
242 # 2003, 2004 Free Software Foundation, Inc.
243 # This Makefile.in is free software; the Free Software Foundation
244 # gives unlimited permission to copy and/or distribute it,
245 # with or without modifications, as long as this notice is preserved.
247 # This program is distributed in the hope that it will be useful,
248 # but WITHOUT ANY WARRANTY, to the extent permitted by law; without
249 # even the implied warranty of MERCHANTABILITY or FITNESS FOR A
250 # PARTICULAR PURPOSE.
251 ";
253 # These constants are returned by lang_*_rewrite functions.
254 # LANG_SUBDIR means that the resulting object file should be in a
255 # subdir if the source file is. In this case the file name cannot
256 # have `..' components.
257 use constant LANG_IGNORE => 0;
258 use constant LANG_PROCESS => 1;
259 use constant LANG_SUBDIR => 2;
261 # These are used when keeping track of whether an object can be built
262 # by two different paths.
263 use constant COMPILE_LIBTOOL => 1;
264 use constant COMPILE_ORDINARY => 2;
266 # We can't always associate a location to a variable or a rule,
267 # when its defined by Automake. We use INTERNAL in this case.
268 use constant INTERNAL => new Automake::Location;
269 \f
271 ## ---------------------------------- ##
272 ## Variables related to the options. ##
273 ## ---------------------------------- ##
275 # TRUE if we should always generate Makefile.in.
276 my $force_generation = 1;
278 # From the Perl manual.
279 my $symlink_exists = (eval 'symlink ("", "");', $@ eq '');
281 # TRUE if missing standard files should be installed.
282 my $add_missing = 0;
284 # TRUE if we should copy missing files; otherwise symlink if possible.
285 my $copy_missing = 0;
287 # TRUE if we should always update files that we know about.
288 my $force_missing = 0;
291 ## ---------------------------------------- ##
292 ## Variables filled during files scanning. ##
293 ## ---------------------------------------- ##
295 # Name of the configure.ac file.
296 my $configure_ac;
298 # Files found by scanning configure.ac for LIBOBJS.
299 my %libsources = ();
301 # Names used in AC_CONFIG_HEADER call.
302 my @config_headers = ();
304 # Names used in AC_CONFIG_LINKS call.
305 my @config_links = ();
307 # Directory where output files go. Actually, output files are
308 # relative to this directory.
309 my $output_directory;
311 # List of Makefile.am's to process, and their corresponding outputs.
312 my @input_files = ();
313 my %output_files = ();
315 # Complete list of Makefile.am's that exist.
316 my @configure_input_files = ();
318 # List of files in AC_CONFIG_FILES/AC_OUTPUT without Makefile.am's,
319 # and their outputs.
320 my @other_input_files = ();
321 # Where each AC_CONFIG_FILES/AC_OUTPUT/AC_CONFIG_LINK/AC_CONFIG_HEADER appears.
322 # The keys are the files created by these macros.
323 my %ac_config_files_location = ();
325 # List of directories to search for configure-required files. This
326 # can be set by AC_CONFIG_AUX_DIR.
327 my @config_aux_path = qw(. .. ../..);
328 my $config_aux_dir = '';
329 my $config_aux_dir_set_in_configure_in = 0;
331 # Whether AM_GNU_GETTEXT has been seen in configure.ac.
332 my $seen_gettext = 0;
333 # Whether AM_GNU_GETTEXT([external]) is used.
334 my $seen_gettext_external = 0;
335 # Where AM_GNU_GETTEXT appears.
336 my $ac_gettext_location;
338 # Lists of tags supported by Libtool.
339 my %libtool_tags = ();
341 # TRUE if we've seen AC_CANONICAL_(HOST|SYSTEM).
342 my $seen_canonical = 0;
343 my $canonical_location;
345 # Where AM_MAINTAINER_MODE appears.
346 my $seen_maint_mode;
348 # Actual version we've seen.
349 my $package_version = '';
351 # Where version is defined.
352 my $package_version_location;
354 # TRUE if we've seen AC_ENABLE_MULTILIB.
355 my $seen_multilib = 0;
357 # TRUE if we've seen AM_PROG_CC_C_O
358 my $seen_cc_c_o = 0;
360 # Where AM_INIT_AUTOMAKE is called;
361 my $seen_init_automake = 0;
363 # TRUE if we've seen AM_AUTOMAKE_VERSION.
364 my $seen_automake_version = 0;
366 # Hash table of discovered configure substitutions. Keys are names,
367 # values are `FILE:LINE' strings which are used by error message
368 # generation.
369 my %configure_vars = ();
371 # Files included by $configure_ac.
372 my @configure_deps = ();
374 # Greatest timestamp of configure's dependencies.
375 my $configure_deps_greatest_timestamp = 0;
377 # Hash table of AM_CONDITIONAL variables seen in configure.
378 my %configure_cond = ();
380 # This maps extensions onto language names.
381 my %extension_map = ();
383 # List of the DIST_COMMON files we discovered while reading
384 # configure.in
385 my $configure_dist_common = '';
387 # This maps languages names onto objects.
388 my %languages = ();
390 # List of targets we must always output.
391 # FIXME: Complete, and remove falsely required targets.
392 my %required_targets =
393 (
394 'all' => 1,
395 'dvi' => 1,
396 'pdf' => 1,
397 'ps' => 1,
398 'info' => 1,
399 'install-info' => 1,
400 'install' => 1,
401 'install-data' => 1,
402 'install-exec' => 1,
403 'uninstall' => 1,
405 # FIXME: Not required, temporary hacks.
406 # Well, actually they are sort of required: the -recursive
407 # targets will run them anyway...
408 'dvi-am' => 1,
409 'pdf-am' => 1,
410 'ps-am' => 1,
411 'info-am' => 1,
412 'install-data-am' => 1,
413 'install-exec-am' => 1,
414 'installcheck-am' => 1,
415 'uninstall-am' => 1,
417 'install-man' => 1,
418 );
420 # This is set to 1 when Automake needs to be run again.
421 # (For instance, this happens when an auxiliary file such as
422 # depcomp is added after the toplevel Makefile.in -- which
423 # should distribute depcomp -- has been generated.)
424 my $automake_needs_to_reprocess_all_files = 0;
426 # If a file name appears as a key in this hash, then it has already
427 # been checked for. This variable is local to the "require file"
428 # functions.
429 my %require_file_found = ();
431 # The name of the Makefile currently being processed.
432 my $am_file = 'BUG';
433 \f
435 ################################################################
437 ## ------------------------------------------ ##
438 ## Variables reset by &initialize_per_input. ##
439 ## ------------------------------------------ ##
441 # Basename and relative dir of the input file.
442 my $am_file_name;
443 my $am_relative_dir;
445 # Same but wrt Makefile.in.
446 my $in_file_name;
447 my $relative_dir;
449 # Greatest timestamp of the output's dependencies (excluding
450 # configure's dependencies).
451 my $output_deps_greatest_timestamp;
453 # These two variables are used when generating each Makefile.in.
454 # They hold the Makefile.in until it is ready to be printed.
455 my $output_rules;
456 my $output_vars;
457 my $output_trailer;
458 my $output_all;
459 my $output_header;
461 # This is the conditional stack, updated on if/else/endif, and
462 # used to build Condition objects.
463 my @cond_stack;
465 # This holds the set of included files.
466 my @include_stack;
468 # This holds a list of directories which we must create at `dist'
469 # time. This is used in some strange scenarios involving weird
470 # AC_OUTPUT commands.
471 my %dist_dirs;
473 # List of dependencies for the obvious targets.
474 my @all;
475 my @check;
476 my @check_tests;
478 # Keys in this hash table are files to delete. The associated
479 # value tells when this should happen (MOSTLY_CLEAN, DIST_CLEAN, etc.)
480 my %clean_files;
482 # Keys in this hash table are object files or other files in
483 # subdirectories which need to be removed. This only holds files
484 # which are created by compilations. The value in the hash indicates
485 # when the file should be removed.
486 my %compile_clean_files;
488 # Keys in this hash table are directories where we expect to build a
489 # libtool object. We use this information to decide what directories
490 # to delete.
491 my %libtool_clean_directories;
493 # Value of `$(SOURCES)', used by tags.am.
494 my @sources;
495 # Sources which go in the distribution.
496 my @dist_sources;
498 # This hash maps object file names onto their corresponding source
499 # file names. This is used to ensure that each object is created
500 # by a single source file.
501 my %object_map;
503 # This hash maps object file names onto an integer value representing
504 # whether this object has been built via ordinary compilation or
505 # libtool compilation (the COMPILE_* constants).
506 my %object_compilation_map;
509 # This keeps track of the directories for which we've already
510 # created dirstamp code.
511 my %directory_map;
513 # All .P files.
514 my %dep_files;
516 # This is a list of all targets to run during "make dist".
517 my @dist_targets;
519 # Keys in this hash are the basenames of files which must depend on
520 # ansi2knr. Values are either the empty string, or the directory in
521 # which the ANSI source file appears; the directory must have a
522 # trailing `/'.
523 my %de_ansi_files;
525 # This is the name of the redirect `all' target to use.
526 my $all_target;
528 # This keeps track of which extensions we've seen (that we care
529 # about).
530 my %extension_seen;
532 # This is random scratch space for the language finish functions.
533 # Don't randomly overwrite it; examine other uses of keys first.
534 my %language_scratch;
536 # We keep track of which objects need special (per-executable)
537 # handling on a per-language basis.
538 my %lang_specific_files;
540 # This is set when `handle_dist' has finished. Once this happens,
541 # we should no longer push on dist_common.
542 my $handle_dist_run;
544 # Used to store a set of linkers needed to generate the sources currently
545 # under consideration.
546 my %linkers_used;
548 # True if we need `LINK' defined. This is a hack.
549 my $need_link;
551 # Was get_object_extension run?
552 # FIXME: This is a hack. a better switch should be found.
553 my $get_object_extension_was_run;
555 # Record each file processed by make_paragraphs.
556 my %transformed_files;
558 ################################################################
560 # var_SUFFIXES_trigger ($TYPE, $VALUE)
561 # ------------------------------------
562 # This is called by Automake::Variable::define() when SUFFIXES
563 # is defined ($TYPE eq '') or appended ($TYPE eq '+').
564 # The work here needs to be performed as a side-effect of the
565 # macro_define() call because SUFFIXES definitions impact
566 # on $KNOWN_EXTENSIONS_PATTERN which is used used when parsing
567 # the input am file.
568 sub var_SUFFIXES_trigger ($$)
569 {
570 my ($type, $value) = @_;
571 accept_extensions (split (' ', $value));
572 }
573 Automake::Variable::hook ('SUFFIXES', \&var_SUFFIXES_trigger);
575 ################################################################
577 ## --------------------------------- ##
578 ## Forward subroutine declarations. ##
579 ## --------------------------------- ##
580 sub register_language (%);
581 sub file_contents_internal ($$$%);
582 sub define_files_variable ($\@$$);
585 # &initialize_per_input ()
586 # ------------------------
587 # (Re)-Initialize per-Makefile.am variables.
588 sub initialize_per_input ()
589 {
590 reset_local_duplicates ();
592 $am_file_name = '';
593 $am_relative_dir = '';
595 $in_file_name = '';
596 $relative_dir = '';
598 $output_deps_greatest_timestamp = 0;
600 $output_rules = '';
601 $output_vars = '';
602 $output_trailer = '';
603 $output_all = '';
604 $output_header = '';
606 Automake::Options::reset;
607 Automake::Variable::reset;
608 Automake::Rule::reset;
610 @cond_stack = ();
612 @include_stack = ();
614 %dist_dirs = ();
616 @all = ();
617 @check = ();
618 @check_tests = ();
620 %clean_files = ();
622 @sources = ();
623 @dist_sources = ();
625 %object_map = ();
626 %object_compilation_map = ();
628 %directory_map = ();
630 %dep_files = ();
632 @dist_targets = ();
634 %de_ansi_files = ();
636 $all_target = '';
638 %extension_seen = ();
640 %language_scratch = ();
642 %lang_specific_files = ();
644 $handle_dist_run = 0;
646 $need_link = 0;
648 $get_object_extension_was_run = 0;
650 %compile_clean_files = ();
652 # We always include `.'. This isn't strictly correct.
653 %libtool_clean_directories = ('.' => 1);
655 %transformed_files = ();
656 }
659 ################################################################
661 # Initialize our list of languages that are internally supported.
663 # C.
664 register_language ('name' => 'c',
665 'Name' => 'C',
666 'config_vars' => ['CC'],
667 'ansi' => 1,
668 'autodep' => '',
669 'flags' => ['CFLAGS', 'CPPFLAGS'],
670 'compiler' => 'COMPILE',
671 'compile' => '$(CC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS) $(CPPFLAGS) $(AM_CFLAGS) $(CFLAGS)',
672 'lder' => 'CCLD',
673 'ld' => '$(CC)',
674 'linker' => 'LINK',
675 'link' => '$(CCLD) $(AM_CFLAGS) $(CFLAGS) $(AM_LDFLAGS) $(LDFLAGS) -o $@',
676 'compile_flag' => '-c',
677 'libtool_tag' => 'CC',
678 'extensions' => ['.c'],
679 '_finish' => \&lang_c_finish);
681 # C++.
682 register_language ('name' => 'cxx',
683 'Name' => 'C++',
684 'config_vars' => ['CXX'],
685 'linker' => 'CXXLINK',
686 'link' => '$(CXXLD) $(AM_CXXFLAGS) $(CXXFLAGS) $(AM_LDFLAGS) $(LDFLAGS) -o $@',
687 'autodep' => 'CXX',
688 'flags' => ['CXXFLAGS', 'CPPFLAGS'],
689 'compile' => '$(CXX) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS) $(CPPFLAGS) $(AM_CXXFLAGS) $(CXXFLAGS)',
690 'compiler' => 'CXXCOMPILE',
691 'compile_flag' => '-c',
692 'output_flag' => '-o',
693 'libtool_tag' => 'CXX',
694 'lder' => 'CXXLD',
695 'ld' => '$(CXX)',
696 'pure' => 1,
697 'extensions' => ['.c++', '.cc', '.cpp', '.cxx', '.C']);
699 # Objective C.
700 register_language ('name' => 'objc',
701 'Name' => 'Objective C',
702 'config_vars' => ['OBJC'],
703 'linker' => 'OBJCLINK',,
704 'link' => '$(OBJCLD) $(AM_OBJCFLAGS) $(OBJCFLAGS) $(AM_LDFLAGS) $(LDFLAGS) -o $@',
705 'autodep' => 'OBJC',
706 'flags' => ['OBJCFLAGS', 'CPPFLAGS'],
707 'compile' => '$(OBJC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS) $(CPPFLAGS) $(AM_OBJCFLAGS) $(OBJCFLAGS)',
708 'compiler' => 'OBJCCOMPILE',
709 'compile_flag' => '-c',
710 'output_flag' => '-o',
711 'lder' => 'OBJCLD',
712 'ld' => '$(OBJC)',
713 'pure' => 1,
714 'extensions' => ['.m']);
716 # Headers.
717 register_language ('name' => 'header',
718 'Name' => 'Header',
719 'extensions' => ['.h', '.H', '.hxx', '.h++', '.hh',
720 '.hpp', '.inc'],
721 # No output.
722 'output_extensions' => sub { return () },
723 # Nothing to do.
724 '_finish' => sub { });
726 # Yacc (C & C++).
727 register_language ('name' => 'yacc',
728 'Name' => 'Yacc',
729 'config_vars' => ['YACC'],
730 'flags' => ['YFLAGS'],
731 'compile' => '$(YACC) $(YFLAGS) $(AM_YFLAGS)',
732 'compiler' => 'YACCCOMPILE',
733 'extensions' => ['.y'],
734 'output_extensions' => sub { (my $ext = $_[0]) =~ tr/y/c/;
735 return ($ext,) },
736 'rule_file' => 'yacc',
737 '_finish' => \&lang_yacc_finish,
738 '_target_hook' => \&lang_yacc_target_hook);
739 register_language ('name' => 'yaccxx',
740 'Name' => 'Yacc (C++)',
741 'config_vars' => ['YACC'],
742 'rule_file' => 'yacc',
743 'flags' => ['YFLAGS'],
744 'compiler' => 'YACCCOMPILE',
745 'compile' => '$(YACC) $(YFLAGS) $(AM_YFLAGS)',
746 'extensions' => ['.y++', '.yy', '.yxx', '.ypp'],
747 'output_extensions' => sub { (my $ext = $_[0]) =~ tr/y/c/;
748 return ($ext,) },
749 '_finish' => \&lang_yacc_finish,
750 '_target_hook' => \&lang_yacc_target_hook);
752 # Lex (C & C++).
753 register_language ('name' => 'lex',
754 'Name' => 'Lex',
755 'config_vars' => ['LEX'],
756 'rule_file' => 'lex',
757 'flags' => ['LFLAGS'],
758 'compile' => '$(LEX) $(LFLAGS) $(AM_LFLAGS)',
759 'compiler' => 'LEXCOMPILE',
760 'extensions' => ['.l'],
761 'output_extensions' => sub { (my $ext = $_[0]) =~ tr/l/c/;
762 return ($ext,) },
763 '_finish' => \&lang_lex_finish,
764 '_target_hook' => \&lang_lex_target_hook);
765 register_language ('name' => 'lexxx',
766 'Name' => 'Lex (C++)',
767 'config_vars' => ['LEX'],
768 'rule_file' => 'lex',
769 'flags' => ['LFLAGS'],
770 'compile' => '$(LEX) $(LFLAGS) $(AM_LFLAGS)',
771 'compiler' => 'LEXCOMPILE',
772 'extensions' => ['.l++', '.ll', '.lxx', '.lpp'],
773 'output_extensions' => sub { (my $ext = $_[0]) =~ tr/l/c/;
774 return ($ext,) },
775 '_finish' => \&lang_lex_finish,
776 '_target_hook' => \&lang_lex_target_hook);
778 # Assembler.
779 register_language ('name' => 'asm',
780 'Name' => 'Assembler',
781 'config_vars' => ['CCAS', 'CCASFLAGS'],
783 'flags' => ['CCASFLAGS'],
784 # Users can set AM_ASFLAGS to includes DEFS, INCLUDES,
785 # or anything else required. They can also set AS.
786 'compile' => '$(CCAS) $(AM_CCASFLAGS) $(CCASFLAGS)',
787 'compiler' => 'CCASCOMPILE',
788 'compile_flag' => '-c',
789 'extensions' => ['.s', '.S'],
791 # With assembly we still use the C linker.
792 '_finish' => \&lang_c_finish);
794 # Fortran 77
795 register_language ('name' => 'f77',
796 'Name' => 'Fortran 77',
797 'linker' => 'F77LINK',
798 'link' => '$(F77LD) $(AM_FFLAGS) $(FFLAGS) $(AM_LDFLAGS) $(LDFLAGS) -o $@',
799 'flags' => ['FFLAGS'],
800 'compile' => '$(F77) $(AM_FFLAGS) $(FFLAGS)',
801 'compiler' => 'F77COMPILE',
802 'compile_flag' => '-c',
803 'output_flag' => '-o',
804 'libtool_tag' => 'F77',
805 'lder' => 'F77LD',
806 'ld' => '$(F77)',
807 'pure' => 1,
808 'extensions' => ['.f', '.for', '.f90']);
810 # Preprocessed Fortran 77
811 #
812 # The current support for preprocessing Fortran 77 just involves
813 # passing `$(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS)
814 # $(CPPFLAGS)' as additional flags to the Fortran 77 compiler, since
815 # this is how GNU Make does it; see the `GNU Make Manual, Edition 0.51
816 # for `make' Version 3.76 Beta' (specifically, from info file
817 # `(make)Catalogue of Rules').
818 #
819 # A better approach would be to write an Autoconf test
820 # (i.e. AC_PROG_FPP) for a Fortran 77 preprocessor, because not all
821 # Fortran 77 compilers know how to do preprocessing. The Autoconf
822 # macro AC_PROG_FPP should test the Fortran 77 compiler first for
823 # preprocessing capabilities, and then fall back on cpp (if cpp were
824 # available).
825 register_language ('name' => 'ppf77',
826 'Name' => 'Preprocessed Fortran 77',
827 'config_vars' => ['F77'],
828 'linker' => 'F77LINK',
829 'link' => '$(F77LD) $(AM_FFLAGS) $(FFLAGS) $(AM_LDFLAGS) $(LDFLAGS) -o $@',
830 'lder' => 'F77LD',
831 'ld' => '$(F77)',
832 'flags' => ['FFLAGS', 'CPPFLAGS'],
833 'compiler' => 'PPF77COMPILE',
834 'compile' => '$(F77) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS) $(CPPFLAGS) $(AM_FFLAGS) $(FFLAGS)',
835 'compile_flag' => '-c',
836 'output_flag' => '-o',
837 'libtool_tag' => 'F77',
838 'pure' => 1,
839 'extensions' => ['.F']);
841 # Ratfor.
842 register_language ('name' => 'ratfor',
843 'Name' => 'Ratfor',
844 'config_vars' => ['F77'],
845 'linker' => 'F77LINK',
846 'link' => '$(F77LD) $(AM_FFLAGS) $(FFLAGS) $(AM_LDFLAGS) $(LDFLAGS) -o $@',
847 'lder' => 'F77LD',
848 'ld' => '$(F77)',
849 'flags' => ['RFLAGS', 'FFLAGS'],
850 # FIXME also FFLAGS.
851 'compile' => '$(F77) $(AM_FFLAGS) $(FFLAGS) $(AM_RFLAGS) $(RFLAGS)',
852 'compiler' => 'RCOMPILE',
853 'compile_flag' => '-c',
854 'output_flag' => '-o',
855 'libtool_tag' => 'F77',
856 'pure' => 1,
857 'extensions' => ['.r']);
859 # Java via gcj.
860 register_language ('name' => 'java',
861 'Name' => 'Java',
862 'config_vars' => ['GCJ'],
863 'linker' => 'GCJLINK',
864 'link' => '$(GCJLD) $(AM_GCJFLAGS) $(GCJFLAGS) $(AM_LDFLAGS) $(LDFLAGS) -o $@',
865 'autodep' => 'GCJ',
866 'flags' => ['GCJFLAGS'],
867 'compile' => '$(GCJ) $(AM_GCJFLAGS) $(GCJFLAGS)',
868 'compiler' => 'GCJCOMPILE',
869 'compile_flag' => '-c',
870 'output_flag' => '-o',
871 'libtool_tag' => 'GCJ',
872 'lder' => 'GCJLD',
873 'ld' => '$(GCJ)',
874 'pure' => 1,
875 'extensions' => ['.java', '.class', '.zip', '.jar']);
877 ################################################################
879 # Error reporting functions.
881 # err_am ($MESSAGE, [%OPTIONS])
882 # -----------------------------
883 # Uncategorized errors about the current Makefile.am.
884 sub err_am ($;%)
885 {
886 msg_am ('error', @_);
887 }
889 # err_ac ($MESSAGE, [%OPTIONS])
890 # -----------------------------
891 # Uncategorized errors about configure.ac.
892 sub err_ac ($;%)
893 {
894 msg_ac ('error', @_);
895 }
897 # msg_am ($CHANNEL, $MESSAGE, [%OPTIONS])
898 # ---------------------------------------
899 # Messages about about the current Makefile.am.
900 sub msg_am ($$;%)
901 {
902 my ($channel, $msg, %opts) = @_;
903 msg $channel, "${am_file}.am", $msg, %opts;
904 }
906 # msg_ac ($CHANNEL, $MESSAGE, [%OPTIONS])
907 # ---------------------------------------
908 # Messages about about configure.ac.
909 sub msg_ac ($$;%)
910 {
911 my ($channel, $msg, %opts) = @_;
912 msg $channel, $configure_ac, $msg, %opts;
913 }
915 ################################################################
917 # subst ($TEXT)
918 # -------------
919 # Return a configure-style substitution using the indicated text.
920 # We do this to avoid having the substitutions directly in automake.in;
921 # when we do that they are sometimes removed and this causes confusion
922 # and bugs.
923 sub subst ($)
924 {
925 my ($text) = @_;
926 return '@' . $text . '@';
927 }
929 ################################################################
932 # $BACKPATH
933 # &backname ($REL-DIR)
934 # --------------------
935 # If I `cd $REL-DIR', then to come back, I should `cd $BACKPATH'.
936 # For instance `src/foo' => `../..'.
937 # Works with non strictly increasing paths, i.e., `src/../lib' => `..'.
938 sub backname ($)
939 {
940 my ($file) = @_;
941 my @res;
942 foreach (split (/\//, $file))
943 {
944 next if $_ eq '.' || $_ eq '';
945 if ($_ eq '..')
946 {
947 pop @res;
948 }
949 else
950 {
951 push (@res, '..');
952 }
953 }
954 return join ('/', @res) || '.';
955 }
957 ################################################################
960 # Handle AUTOMAKE_OPTIONS variable. Return 1 on error, 0 otherwise.
961 sub handle_options
962 {
963 my $var = var ('AUTOMAKE_OPTIONS');
964 if ($var)
965 {
966 # FIXME: We should disallow conditional definitions of AUTOMAKE_OPTIONS.
967 if (process_option_list ($var->rdef (TRUE)->location,
968 $var->value_as_list_recursive (cond_filter =>
969 TRUE)))
970 {
971 return 1;
972 }
973 }
975 if ($strictness == GNITS)
976 {
977 set_option ('readme-alpha', INTERNAL);
978 set_option ('std-options', INTERNAL);
979 set_option ('check-news', INTERNAL);
980 }
982 return 0;
983 }
985 # shadow_unconditionally ($varname, $where)
986 # -----------------------------------------
987 # Return a $(variable) that contains all possible values
988 # $varname can take.
989 # If the VAR wasn't defined conditionally, return $(VAR).
990 # Otherwise we create a am__VAR_DIST variable which contains
991 # all possible values, and return $(am__VAR_DIST).
992 sub shadow_unconditionally ($$)
993 {
994 my ($varname, $where) = @_;
995 my $var = var $varname;
996 if ($var->has_conditional_contents)
997 {
998 $varname = "am__${varname}_DIST";
999 my @files = uniq ($var->value_as_list_recursive);
1000 define_pretty_variable ($varname, TRUE, $where, @files);
1001 }
1002 return "\$($varname)"
1003 }
1005 # get_object_extension ($OUT)
1006 # ---------------------------
1007 # Return object extension. Just once, put some code into the output.
1008 # OUT is the name of the output file
1009 sub get_object_extension
1010 {
1011 my ($out) = @_;
1013 # Maybe require libtool library object files.
1014 my $extension = '.$(OBJEXT)';
1015 $extension = '.lo' if ($out =~ /\.la$/);
1017 # Check for automatic de-ANSI-fication.
1018 $extension = '$U' . $extension
1019 if option 'ansi2knr';
1021 $get_object_extension_was_run = 1;
1023 return $extension;
1024 }
1027 # Call finish function for each language that was used.
1028 sub handle_languages
1029 {
1030 if (! option 'no-dependencies')
1031 {
1032 # Include auto-dep code. Don't include it if DEP_FILES would
1033 # be empty.
1034 if (&saw_sources_p (0) && keys %dep_files)
1035 {
1036 # Set location of depcomp.
1037 &define_variable ('depcomp', "\$(SHELL) $config_aux_dir/depcomp",
1038 INTERNAL);
1039 &define_variable ('am__depfiles_maybe', 'depfiles', INTERNAL);
1041 require_conf_file ("$am_file.am", FOREIGN, 'depcomp');
1043 my @deplist = sort keys %dep_files;
1044 # Generate each `include' individually. Irix 6 make will
1045 # not properly include several files resulting from a
1046 # variable expansion; generating many separate includes
1047 # seems safest.
1048 $output_rules .= "\n";
1049 foreach my $iter (@deplist)
1050 {
1051 $output_rules .= (subst ('AMDEP_TRUE')
1052 . subst ('am__include')
1053 . ' '
1054 . subst ('am__quote')
1055 . $iter
1056 . subst ('am__quote')
1057 . "\n");
1058 }
1060 # Compute the set of directories to remove in distclean-depend.
1061 my @depdirs = uniq (map { dirname ($_) } @deplist);
1062 $output_rules .= &file_contents ('depend',
1063 new Automake::Location,
1064 DEPDIRS => "@depdirs");
1065 }
1066 }
1067 else
1068 {
1069 &define_variable ('depcomp', '', INTERNAL);
1070 &define_variable ('am__depfiles_maybe', '', INTERNAL);
1071 }
1073 my %done;
1075 # Is the c linker needed?
1076 my $needs_c = 0;
1077 foreach my $ext (sort keys %extension_seen)
1078 {
1079 next unless $extension_map{$ext};
1081 my $lang = $languages{$extension_map{$ext}};
1083 my $rule_file = $lang->rule_file || 'depend2';
1085 # Get information on $LANG.
1086 my $pfx = $lang->autodep;
1087 my $fpfx = ($pfx eq '') ? 'CC' : $pfx;
1089 my ($AMDEP, $FASTDEP) =
1090 (option 'no-dependencies' || $lang->autodep eq 'no')
1091 ? ('FALSE', 'FALSE') : ('AMDEP', "am__fastdep$fpfx");
1093 my %transform = ('EXT' => $ext,
1094 'PFX' => $pfx,
1095 'FPFX' => $fpfx,
1096 'AMDEP' => $AMDEP,
1097 'FASTDEP' => $FASTDEP,
1098 '-c' => $lang->compile_flag || '',
1099 'MORE-THAN-ONE'
1100 => (count_files_for_language ($lang->name) > 1));
1102 # Generate the appropriate rules for this extension.
1103 if (((! option 'no-dependencies') && $lang->autodep ne 'no')
1104 || defined $lang->compile)
1105 {
1106 # Some C compilers don't support -c -o. Use it only if really
1107 # needed.
1108 my $output_flag = $lang->output_flag || '';
1109 $output_flag = '-o'
1110 if (! $output_flag
1111 && $lang->name eq 'c'
1112 && option 'subdir-objects');
1114 # Compute a possible derived extension.
1115 # This is not used by depend2.am.
1116 my $der_ext = (&{$lang->output_extensions} ($ext))[0];
1118 # When we output an inference rule like `.c.o:' we
1119 # have two cases to consider: either subdir-objects
1120 # is used, or it is not.
1121 #
1122 # In the latter case the rule is used to build objects
1123 # in the current directory, and dependencies always
1124 # go into `./$(DEPDIR)/'. We can hard-code this value.
1125 #
1126 # In the former case the rule can be used to build
1127 # objects in sub-directories too. Dependencies should
1128 # go into the appropriate sub-directories, e.g.,
1129 # `sub/$(DEPDIR)/'. The value of this directory
1130 # need the be computed on-the-fly.
1131 #
1132 # DEPBASE holds the name of this directory, plus the
1133 # basename part of the object file (extensions Po, TPo,
1134 # Plo, TPlo will be added later as appropriate). It is
1135 # either hardcoded, or a shell variable (`$depbase') that
1136 # will be computed by the rule.
1137 my $depbase =
1138 option ('subdir-objects') ? '$$depbase' : '$(DEPDIR)/$*';
1139 $output_rules .=
1140 file_contents ($rule_file,
1141 new Automake::Location,
1142 %transform,
1143 GENERIC => 1,
1145 'DERIVED-EXT' => $der_ext,
1147 DEPBASE => $depbase,
1148 BASE => '$*',
1149 SOURCE => '$<',
1150 OBJ => '$@',
1151 OBJOBJ => '$@',
1152 LTOBJ => '$@',
1154 COMPILE => '$(' . $lang->compiler . ')',
1155 LTCOMPILE => '$(LT' . $lang->compiler . ')',
1156 -o => $output_flag,
1157 SUBDIROBJ => !! option 'subdir-objects');
1158 }
1160 # Now include code for each specially handled object with this
1161 # language.
1162 my %seen_files = ();
1163 foreach my $file (@{$lang_specific_files{$lang->name}})
1164 {
1165 my ($derived, $source, $obj, $myext, %file_transform) = @$file;
1167 # We might see a given object twice, for instance if it is
1168 # used under different conditions.
1169 next if defined $seen_files{$obj};
1170 $seen_files{$obj} = 1;
1172 prog_error ("found " . $lang->name .
1173 " in handle_languages, but compiler not defined")
1174 unless defined $lang->compile;
1176 my $obj_compile = $lang->compile;
1178 # Rewrite each occurrence of `AM_$flag' in the compile
1179 # rule into `${derived}_$flag' if it exists.
1180 for my $flag (@{$lang->flags})
1181 {
1182 my $val = "${derived}_$flag";
1183 $obj_compile =~ s/\(AM_$flag\)/\($val\)/
1184 if set_seen ($val);
1185 }
1187 my $libtool_tag = '';
1188 if ($lang->libtool_tag && exists $libtool_tags{$lang->libtool_tag})
1189 {
1190 $libtool_tag = '--tag=' . $lang->libtool_tag . ' '
1191 }
1193 my $obj_ltcompile =
1194 '$(LIBTOOL) --mode=compile ' . $libtool_tag . $obj_compile;
1196 # We _need_ `-o' for per object rules.
1197 my $output_flag = $lang->output_flag || '-o';
1199 my $depbase = dirname ($obj);
1200 $depbase = ''
1201 if $depbase eq '.';
1202 $depbase .= '/'
1203 unless $depbase eq '';
1204 $depbase .= '$(DEPDIR)/' . basename ($obj);
1206 # Support for deansified files in subdirectories is ugly
1207 # enough to deserve an explanation.
1208 #
1209 # A Note about normal ansi2knr processing first. On
1210 #
1211 # AUTOMAKE_OPTIONS = ansi2knr
1212 # bin_PROGRAMS = foo
1213 # foo_SOURCES = foo.c
1214 #
1215 # we generate rules similar to:
1216 #
1217 # foo: foo$U.o; link ...
1218 # foo$U.o: foo$U.c; compile ...
1219 # foo_.c: foo.c; ansi2knr ...
1220 #
1221 # this is fairly compact, and will call ansi2knr depending
1222 # on the value of $U (`' or `_').
1223 #
1224 # It's harder with subdir sources. On
1225 #
1226 # AUTOMAKE_OPTIONS = ansi2knr
1227 # bin_PROGRAMS = foo
1228 # foo_SOURCES = sub/foo.c
1229 #
1230 # we have to create foo_.c in the current directory.
1231 # (Unless the user asks 'subdir-objects'.) This is important
1232 # in case the same file (`foo.c') is compiled from other
1233 # directories with different cpp options: foo_.c would
1234 # be preprocessed for only one set of options if it were
1235 # put in the subdirectory.
1236 #
1237 # Because foo$U.o must be built from either foo_.c or
1238 # sub/foo.c we can't be as concise as in the first example.
1239 # Instead we output
1240 #
1241 # foo: foo$U.o; link ...
1242 # foo_.o: foo_.c; compile ...
1243 # foo.o: sub/foo.c; compile ...
1244 # foo_.c: foo.c; ansi2knr ...
1245 #
1246 # This is why we'll now transform $rule_file twice
1247 # if we detect this case.
1248 # A first time we output the compile rule with `$U'
1249 # replaced by `_' and the source directory removed,
1250 # and another time we simply remove `$U'.
1251 #
1252 # Note that at this point $source (as computed by
1253 # &handle_single_transform) is `sub/foo$U.c'.
1254 # This can be confusing: it can be used as-is when
1255 # subdir-objects is set, otherwise you have to know
1256 # it really means `foo_.c' or `sub/foo.c'.
1257 my $objdir = dirname ($obj);
1258 my $srcdir = dirname ($source);
1259 if ($lang->ansi && $obj =~ /\$U/)
1260 {
1261 prog_error "`$obj' contains \$U, but `$source' doesn't."
1262 if $source !~ /\$U/;
1264 (my $source_ = $source) =~ s/\$U/_/g;
1265 # Output an additional rule if _.c and .c are not in
1266 # the same directory. (_.c is always in $objdir.)
1267 if ($objdir ne $srcdir)
1268 {
1269 (my $obj_ = $obj) =~ s/\$U/_/g;
1270 (my $depbase_ = $depbase) =~ s/\$U/_/g;
1271 $source_ = basename ($source_);
1273 $output_rules .=
1274 file_contents ($rule_file,
1275 new Automake::Location,
1276 %transform,
1277 GENERIC => 0,
1279 DEPBASE => $depbase_,
1280 BASE => $obj_,
1281 SOURCE => $source_,
1282 OBJ => "$obj_$myext",
1283 OBJOBJ => "$obj_.obj",
1284 LTOBJ => "$obj_.lo",
1286 COMPILE => $obj_compile,
1287 LTCOMPILE => $obj_ltcompile,
1288 -o => $output_flag,
1289 %file_transform);
1290 $obj =~ s/\$U//g;
1291 $depbase =~ s/\$U//g;
1292 $source =~ s/\$U//g;
1293 }
1294 }
1296 $output_rules .=
1297 file_contents ($rule_file,
1298 new Automake::Location,
1299 %transform,
1300 GENERIC => 0,
1302 DEPBASE => $depbase,
1303 BASE => $obj,
1304 SOURCE => $source,
1305 # Use $myext and not `.o' here, in case
1306 # we are actually building a new source
1307 # file -- e.g. via yacc.
1308 OBJ => "$obj$myext",
1309 OBJOBJ => "$obj.obj",
1310 LTOBJ => "$obj.lo",
1312 COMPILE => $obj_compile,
1313 LTCOMPILE => $obj_ltcompile,
1314 -o => $output_flag,
1315 %file_transform);
1316 }
1318 # The rest of the loop is done once per language.
1319 next if defined $done{$lang};
1320 $done{$lang} = 1;
1322 # Load the language dependent Makefile chunks.
1323 my %lang = map { uc ($_) => 0 } keys %languages;
1324 $lang{uc ($lang->name)} = 1;
1325 $output_rules .= file_contents ('lang-compile',
1326 new Automake::Location,
1327 %transform, %lang);
1329 # If the source to a program consists entirely of code from a
1330 # `pure' language, for instance C++ for Fortran 77, then we
1331 # don't need the C compiler code. However if we run into
1332 # something unusual then we do generate the C code. There are
1333 # probably corner cases here that do not work properly.
1334 # People linking Java code to Fortran code deserve pain.
1335 $needs_c ||= ! $lang->pure;
1337 define_compiler_variable ($lang)
1338 if ($lang->compile);
1340 define_linker_variable ($lang)
1341 if ($lang->link);
1343 require_variables ("$am_file.am", $lang->Name . " source seen",
1344 TRUE, @{$lang->config_vars});
1346 # Call the finisher.
1347 $lang->finish;
1349 # Flags listed in `->flags' are user variables (per GNU Standards),
1350 # they should not be overridden in the Makefile...
1351 my @dont_override = @{$lang->flags};
1352 # ... and so is LDFLAGS.
1353 push @dont_override, 'LDFLAGS' if $lang->link;
1355 foreach my $flag (@dont_override)
1356 {
1357 my $var = var $flag;
1358 if ($var)
1359 {
1360 for my $cond ($var->conditions->conds)
1361 {
1362 if ($var->rdef ($cond)->owner == VAR_MAKEFILE)
1363 {
1364 msg_cond_var ('gnu', $cond, $flag,
1365 "`$flag' is a user variable, "
1366 . "you should not override it;\n"
1367 . "use `AM_$flag' instead.");
1368 }
1369 }
1370 }
1371 }
1372 }
1374 # If the project is entirely C++ or entirely Fortran 77 (i.e., 1
1375 # suffix rule was learned), don't bother with the C stuff. But if
1376 # anything else creeps in, then use it.
1377 $needs_c = 1
1378 if $need_link || suffix_rules_count > 1;
1380 if ($needs_c)
1381 {
1382 &define_compiler_variable ($languages{'c'})
1383 unless defined $done{$languages{'c'}};
1384 define_linker_variable ($languages{'c'});
1385 }
1386 }
1388 # Check to make sure a source defined in LIBOBJS is not explicitly
1389 # mentioned. This is a separate function (as opposed to being inlined
1390 # in handle_source_transform) because it isn't always appropriate to
1391 # do this check.
1392 sub check_libobjs_sources
1393 {
1394 my ($one_file, $unxformed) = @_;
1396 foreach my $prefix ('', 'EXTRA_', 'dist_', 'nodist_',
1397 'dist_EXTRA_', 'nodist_EXTRA_')
1398 {
1399 my @files;
1400 my $varname = $prefix . $one_file . '_SOURCES';
1401 my $var = var ($varname);
1402 if ($var)
1403 {
1404 @files = $var->value_as_list_recursive;
1405 }
1406 elsif ($prefix eq '')
1407 {
1408 @files = ($unxformed . '.c');
1409 }
1410 else
1411 {
1412 next;
1413 }
1415 foreach my $file (@files)
1416 {
1417 err_var ($prefix . $one_file . '_SOURCES',
1418 "automatically discovered file `$file' should not" .
1419 " be explicitly mentioned")
1420 if defined $libsources{$file};
1421 }
1422 }
1423 }
1426 # @OBJECTS
1427 # handle_single_transform ($VAR, $TOPPARENT, $DERIVED, $OBJ, $FILE, %TRANSFORM)
1428 # -----------------------------------------------------------------------------
1429 # Does much of the actual work for handle_source_transform.
1430 # Arguments are:
1431 # $VAR is the name of the variable that the source filenames come from
1432 # $TOPPARENT is the name of the _SOURCES variable which is being processed
1433 # $DERIVED is the name of resulting executable or library
1434 # $OBJ is the object extension (e.g., `$U.lo')
1435 # $FILE the source file to transform
1436 # %TRANSFORM contains extras arguments to pass to file_contents
1437 # when producing explicit rules
1438 # Result is a list of the names of objects
1439 # %linkers_used will be updated with any linkers needed
1440 sub handle_single_transform ($$$$$%)
1441 {
1442 my ($var, $topparent, $derived, $obj, $_file, %transform) = @_;
1443 my @files = ($_file);
1444 my @result = ();
1445 my $nonansi_obj = $obj;
1446 $nonansi_obj =~ s/\$U//g;
1448 # Turn sources into objects. We use a while loop like this
1449 # because we might add to @files in the loop.
1450 while (scalar @files > 0)
1451 {
1452 $_ = shift @files;
1454 # Configure substitutions in _SOURCES variables are errors.
1455 if (/^\@.*\@$/)
1456 {
1457 my $parent_msg = '';
1458 $parent_msg = "\nand is referred to from `$topparent'"
1459 if $topparent ne $var->name;
1460 err_var ($var,
1461 "`" . $var->name . "' includes configure substitution `$_'"
1462 . $parent_msg . ";\nconfigure " .
1463 "substitutions are not allowed in _SOURCES variables");
1464 next;
1465 }
1467 # If the source file is in a subdirectory then the `.o' is put
1468 # into the current directory, unless the subdir-objects option
1469 # is in effect.
1471 # Split file name into base and extension.
1472 next if ! /^(?:(.*)\/)?([^\/]*)($KNOWN_EXTENSIONS_PATTERN)$/;
1473 my $full = $_;
1474 my $directory = $1 || '';
1475 my $base = $2;
1476 my $extension = $3;
1478 # We must generate a rule for the object if it requires its own flags.
1479 my $renamed = 0;
1480 my ($linker, $object);
1482 # This records whether we've seen a derived source file (e.g.
1483 # yacc output).
1484 my $derived_source = 0;
1486 # This holds the `aggregate context' of the file we are
1487 # currently examining. If the file is compiled with
1488 # per-object flags, then it will be the name of the object.
1489 # Otherwise it will be `AM'. This is used by the target hook
1490 # language function.
1491 my $aggregate = 'AM';
1493 $extension = &derive_suffix ($extension, $nonansi_obj);
1494 my $lang;
1495 if ($extension_map{$extension} &&
1496 ($lang = $languages{$extension_map{$extension}}))
1497 {
1498 # Found the language, so see what it says.
1499 &saw_extension ($extension);
1501 # Note: computed subr call. The language rewrite function
1502 # should return one of the LANG_* constants. It could
1503 # also return a list whose first value is such a constant
1504 # and whose second value is a new source extension which
1505 # should be applied. This means this particular language
1506 # generates another source file which we must then process
1507 # further.
1508 my $subr = \&{'lang_' . $lang->name . '_rewrite'};
1509 my ($r, $source_extension)
1510 = &$subr ($directory, $base, $extension);
1511 # Skip this entry if we were asked not to process it.
1512 next if $r == LANG_IGNORE;
1514 # Now extract linker and other info.
1515 $linker = $lang->linker;
1517 my $this_obj_ext;
1518 if (defined $source_extension)
1519 {
1520 $this_obj_ext = $source_extension;
1521 $derived_source = 1;
1522 }
1523 elsif ($lang->ansi)
1524 {
1525 $this_obj_ext = $obj;
1526 }
1527 else
1528 {
1529 $this_obj_ext = $nonansi_obj;
1530 }
1531 $object = $base . $this_obj_ext;
1533 # Do we have per-executable flags for this executable?
1534 my $have_per_exec_flags = 0;
1535 foreach my $flag (@{$lang->flags})
1536 {
1537 if (set_seen ("${derived}_$flag"))
1538 {
1539 $have_per_exec_flags = 1;
1540 last;
1541 }
1542 }
1544 if ($have_per_exec_flags)
1545 {
1546 # We have a per-executable flag in effect for this
1547 # object. In this case we rewrite the object's
1548 # name to ensure it is unique. We also require
1549 # the `compile' program to deal with compilers
1550 # where `-c -o' does not work.
1552 # We choose the name `DERIVED_OBJECT' to ensure
1553 # (1) uniqueness, and (2) continuity between
1554 # invocations. However, this will result in a
1555 # name that is too long for losing systems, in
1556 # some situations. So we provide _SHORTNAME to
1557 # override.
1559 my $dname = $derived;
1560 my $var = var ($derived . '_SHORTNAME');
1561 if ($var)
1562 {
1563 # FIXME: should use the same Condition as
1564 # the _SOURCES variable. But this is really
1565 # silly overkill -- nobody should have
1566 # conditional shortnames.
1567 $dname = $var->variable_value;
1568 }
1569 $object = $dname . '-' . $object;
1571 require_conf_file ("$am_file.am", FOREIGN, 'compile')
1572 if $lang->name eq 'c';
1574 prog_error ($lang->name . " flags defined without compiler")
1575 if ! defined $lang->compile;
1577 $renamed = 1;
1578 }
1580 # If rewrite said it was ok, put the object into a
1581 # subdir.
1582 if ($r == LANG_SUBDIR && $directory ne '')
1583 {
1584 $object = $directory . '/' . $object;
1585 }
1587 # If the object file has been renamed (because per-target
1588 # flags are used) we cannot compile the file with an
1589 # inference rule: we need an explicit rule.
1590 #
1591 # If the source is in a subdirectory and the object is in
1592 # the current directory, we also need an explicit rule.
1593 #
1594 # If both source and object files are in a subdirectory
1595 # (this happens when the subdir-objects option is used),
1596 # then the inference will work.
1597 #
1598 # The latter case deserves a historical note. When the
1599 # subdir-objects option was added on 1999-04-11 it was
1600 # thought that inferences rules would work for
1601 # subdirectory objects too. Later, on 1999-11-22,
1602 # automake was changed to output explicit rules even for
1603 # subdir-objects. Nobody remembers why, but this occured
1604 # soon after the merge of the user-dep-gen-branch so it
1605 # might be related. In late 2003 people complained about
1606 # the size of the generated Makefile.ins (libgcj, with
1607 # 2200+ subdir objects was reported to have a 9MB
1608 # Makefile), so we now rely on inference rules again.
1609 # Maybe we'll run across the same issue as in the past,
1610 # but at least this time we can document it. However since
1611 # dependency tracking has evolved it is possible that
1612 # our old problem no longer exists.
1613 # Using inference rules for subdir-objects has been tested
1614 # with GNU make, Solaris make, Ultrix make, BSD make,
1615 # HP-UX make, and OSF1 make successfully.
1616 if ($renamed ||
1617 ($directory ne '' && ! option 'subdir-objects'))
1618 {
1619 my $obj_sans_ext = substr ($object, 0,
1620 - length ($this_obj_ext));
1621 my $full_ansi = $full;
1622 if ($lang->ansi && option 'ansi2knr')
1623 {
1624 $full_ansi =~ s/$KNOWN_EXTENSIONS_PATTERN$/\$U$&/;
1625 $obj_sans_ext .= '$U';
1626 }
1628 my @specifics = ($full_ansi, $obj_sans_ext,
1629 # Only use $this_obj_ext in the derived
1630 # source case because in the other case we
1631 # *don't* want $(OBJEXT) to appear here.
1632 ($derived_source ? $this_obj_ext : '.o'));
1634 # If we renamed the object then we want to use the
1635 # per-executable flag name. But if this is simply a
1636 # subdir build then we still want to use the AM_ flag
1637 # name.
1638 if ($renamed)
1639 {
1640 unshift @specifics, $derived;
1641 $aggregate = $derived;
1642 }
1643 else
1644 {
1645 unshift @specifics, 'AM';
1646 }
1648 # Each item on this list is a reference to a list consisting
1649 # of four values followed by additional transform flags for
1650 # file_contents. The four values are the derived flag prefix
1651 # (e.g. for `foo_CFLAGS', it is `foo'), the name of the
1652 # source file, the base name of the output file, and
1653 # the extension for the object file.
1654 push (@{$lang_specific_files{$lang->name}},
1655 [@specifics, %transform]);
1656 }
1657 }
1658 elsif ($extension eq $nonansi_obj)
1659 {
1660 # This is probably the result of a direct suffix rule.
1661 # In this case we just accept the rewrite.
1662 $object = "$base$extension";
1663 $linker = '';
1664 }
1665 else
1666 {
1667 # No error message here. Used to have one, but it was
1668 # very unpopular.
1669 # FIXME: we could potentially do more processing here,
1670 # perhaps treating the new extension as though it were a
1671 # new source extension (as above). This would require
1672 # more restructuring than is appropriate right now.
1673 next;
1674 }
1676 err_am "object `$object' created by `$full' and `$object_map{$object}'"
1677 if (defined $object_map{$object}
1678 && $object_map{$object} ne $full);
1680 my $comp_val = (($object =~ /\.lo$/)
1681 ? COMPILE_LIBTOOL : COMPILE_ORDINARY);
1682 (my $comp_obj = $object) =~ s/\.lo$/.\$(OBJEXT)/;
1683 if (defined $object_compilation_map{$comp_obj}
1684 && $object_compilation_map{$comp_obj} != 0
1685 # Only see the error once.
1686 && ($object_compilation_map{$comp_obj}
1687 != (COMPILE_LIBTOOL | COMPILE_ORDINARY))
1688 && $object_compilation_map{$comp_obj} != $comp_val)
1689 {
1690 err_am "object `$comp_obj' created both with libtool and without";
1691 }
1692 $object_compilation_map{$comp_obj} |= $comp_val;
1694 if (defined $lang)
1695 {
1696 # Let the language do some special magic if required.
1697 $lang->target_hook ($aggregate, $object, $full);
1698 }
1700 if ($derived_source)
1701 {
1702 prog_error ($lang->name . " has automatic dependency tracking")
1703 if $lang->autodep ne 'no';
1704 # Make sure this new source file is handled next. That will
1705 # make it appear to be at the right place in the list.
1706 unshift (@files, $object);
1707 # Distribute derived sources unless the source they are
1708 # derived from is not.
1709 &push_dist_common ($object)
1710 unless ($topparent =~ /^(?:nobase_)?nodist_/);
1711 next;
1712 }
1714 $linkers_used{$linker} = 1;
1716 push (@result, $object);
1718 if (! defined $object_map{$object})
1719 {
1720 my @dep_list = ();
1721 $object_map{$object} = $full;
1723 # If resulting object is in subdir, we need to make
1724 # sure the subdir exists at build time.
1725 if ($object =~ /\//)
1726 {
1727 # FIXME: check that $DIRECTORY is somewhere in the
1728 # project
1730 # For Java, the way we're handling it right now, a
1731 # `..' component doesn't make sense.
1732 if ($lang->name eq 'java' && $object =~ /(\/|^)\.\.\//)
1733 {
1734 err_am "`$full' should not contain a `..' component";
1735 }
1737 # Make sure object is removed by `make mostlyclean'.
1738 $compile_clean_files{$object} = MOSTLY_CLEAN;
1739 # If we have a libtool object then we also must remove
1740 # the ordinary .o.
1741 if ($object =~ /\.lo$/)
1742 {
1743 (my $xobj = $object) =~ s,lo$,\$(OBJEXT),;
1744 $compile_clean_files{$xobj} = MOSTLY_CLEAN;
1746 # Remove any libtool object in this directory.
1747 $libtool_clean_directories{$directory} = 1;
1748 }
1750 push (@dep_list, require_build_directory ($directory));
1752 # If we're generating dependencies, we also want
1753 # to make sure that the appropriate subdir of the
1754 # .deps directory is created.
1755 push (@dep_list,
1756 require_build_directory ($directory . '/$(DEPDIR)'))
1757 unless option 'no-dependencies';
1758 }
1760 &pretty_print_rule ($object . ':', "\t", @dep_list)
1761 if scalar @dep_list > 0;
1762 }
1764 # Transform .o or $o file into .P file (for automatic
1765 # dependency code).
1766 if ($lang && $lang->autodep ne 'no')
1767 {
1768 my $depfile = $object;
1769 $depfile =~ s/\.([^.]*)$/.P$1/;
1770 $depfile =~ s/\$\(OBJEXT\)$/o/;
1771 $dep_files{dirname ($depfile) . '/$(DEPDIR)/'
1772 . basename ($depfile)} = 1;
1773 }
1774 }
1776 return @result;
1777 }
1780 # $LINKER
1781 # define_objects_from_sources ($VAR, $OBJVAR, $NODEFINE, $ONE_FILE,
1782 # $OBJ, $PARENT, $TOPPARENT, $WHERE, %TRANSFORM)
1783 # ---------------------------------------------------------------------------
1784 # Define an _OBJECTS variable for a _SOURCES variable (or subvariable)
1785 #
1786 # Arguments are:
1787 # $VAR is the name of the _SOURCES variable
1788 # $OBJVAR is the name of the _OBJECTS variable if known (otherwise
1789 # it will be generated and returned).
1790 # $NODEFINE is a boolean: if true, $OBJVAR will not be defined (but
1791 # work done to determine the linker will be).
1792 # $ONE_FILE is the canonical (transformed) name of object to build
1793 # $OBJ is the object extension (i.e. either `.o' or `.lo').
1794 # $TOPPARENT is the _SOURCES variable being processed.
1795 # $WHERE context into which this definition is done
1796 # %TRANSFORM extra arguments to pass to file_contents when producing
1797 # rules
1798 #
1799 # Result is a pair ($LINKER, $OBJVAR):
1800 # $LINKER is a boolean, true if a linker is needed to deal with the objects
1801 sub define_objects_from_sources ($$$$$$$%)
1802 {
1803 my ($var, $objvar, $nodefine, $one_file,
1804 $obj, $topparent, $where, %transform) = @_;
1806 my $needlinker = "";
1808 transform_variable_recursively
1809 ($var, $objvar, 'am__objects', $nodefine, $where,
1810 # The transform code to run on each filename.
1811 sub {
1812 my ($subvar, $val, $cond, $full_cond) = @_;
1813 my @trans = handle_single_transform ($subvar, $topparent,
1814 $one_file, $obj, $val,
1815 %transform);
1816 $needlinker = "true" if @trans;
1817 return @trans;
1818 });
1820 return $needlinker;
1821 }
1824 # handle_source_transform ($CANON_TARGET, $TARGET, $OBJEXT, $WHERE, %TRANSFORM)
1825 # -----------------------------------------------------------------------------
1826 # Handle SOURCE->OBJECT transform for one program or library.
1827 # Arguments are:
1828 # canonical (transformed) name of target to build
1829 # actual target of object to build
1830 # object extension (i.e. either `.o' or `$o'.
1831 # location of the source variable
1832 # extra arguments to pass to file_contents when producing rules
1833 # Return result is name of linker variable that must be used.
1834 # Empty return means just use `LINK'.
1835 sub handle_source_transform ($$$$%)
1836 {
1837 # one_file is canonical name. unxformed is given name. obj is
1838 # object extension.
1839 my ($one_file, $unxformed, $obj, $where, %transform) = @_;
1841 my ($linker) = '';
1843 # No point in continuing if _OBJECTS is defined.
1844 return if reject_var ($one_file . '_OBJECTS',
1845 $one_file . '_OBJECTS should not be defined');
1847 my %used_pfx = ();
1848 my $needlinker;
1849 %linkers_used = ();
1850 foreach my $prefix ('', 'EXTRA_', 'dist_', 'nodist_',
1851 'dist_EXTRA_', 'nodist_EXTRA_')
1852 {
1853 my $varname = $prefix . $one_file . "_SOURCES";
1854 my $var = var $varname;
1855 next unless $var;
1857 # We are going to define _OBJECTS variables using the prefix.
1858 # Then we glom them all together. So we can't use the null
1859 # prefix here as we need it later.
1860 my $xpfx = ($prefix eq '') ? 'am_' : $prefix;
1862 # Keep track of which prefixes we saw.
1863 $used_pfx{$xpfx} = 1
1864 unless $prefix =~ /EXTRA_/;
1866 push @sources, "\$($varname)";
1867 push @dist_sources, shadow_unconditionally ($varname, $where)
1868 unless (option ('no-dist') || $prefix =~ /^nodist_/);
1870 $needlinker |=
1871 define_objects_from_sources ($varname,
1872 $xpfx . $one_file . '_OBJECTS',
1873 $prefix =~ /EXTRA_/,
1874 $one_file, $obj, $varname, $where,
1875 %transform);
1876 }
1877 if ($needlinker)
1878 {
1879 $linker ||= &resolve_linker (%linkers_used);
1880 }
1882 my @keys = sort keys %used_pfx;
1883 if (scalar @keys == 0)
1884 {
1885 # The default source for libfoo.la is libfoo.c, but for
1886 # backward compatibility we first look at libfoo_la.c
1887 my $old_default_source = "$one_file.c";
1888 (my $default_source = $unxformed) =~ s,(\.[^./\\]*)?$,.c,;
1889 if ($old_default_source ne $default_source
1890 && (rule $old_default_source || -f $old_default_source))
1891 {
1892 my $loc = $where->clone;
1893 $loc->pop_context;
1894 msg ('obsolete', $loc,
1895 "the default source for `$unxformed' has been changed "
1896 . "to `$default_source'.\n(Using `$old_default_source' for "
1897 . "backward compatibility.)");
1898 $default_source = $old_default_source;
1899 }
1901 &define_variable ($one_file . "_SOURCES", $default_source, $where);
1902 push (@sources, $default_source);
1903 push (@dist_sources, $default_source);
1905 %linkers_used = ();
1906 my (@result) =
1907 handle_single_transform ($one_file . '_SOURCES',
1908 $one_file . '_SOURCES',
1909 $one_file, $obj,
1910 $default_source, %transform);
1911 $linker ||= &resolve_linker (%linkers_used);
1912 define_pretty_variable ($one_file . '_OBJECTS', TRUE, $where, @result);
1913 }
1914 else
1915 {
1916 @keys = map { '$(' . $_ . $one_file . '_OBJECTS)' } @keys;
1917 define_pretty_variable ($one_file . '_OBJECTS', TRUE, $where, @keys);
1918 }
1920 # If we want to use `LINK' we must make sure it is defined.
1921 if ($linker eq '')
1922 {
1923 $need_link = 1;
1924 }
1926 return $linker;
1927 }
1930 # handle_lib_objects ($XNAME, $VAR)
1931 # ---------------------------------
1932 # Special-case ALLOCA and LIBOBJS substitutions in _LDADD or _LIBADD variables.
1933 # Also, generate _DEPENDENCIES variable if appropriate.
1934 # Arguments are:
1935 # transformed name of object being built, or empty string if no object
1936 # name of _LDADD/_LIBADD-type variable to examine
1937 # Returns 1 if LIBOBJS seen, 0 otherwise.
1938 sub handle_lib_objects
1939 {
1940 my ($xname, $varname) = @_;
1942 my $var = var ($varname);
1943 prog_error "handle_lib_objects: `$varname' undefined"
1944 unless $var;
1945 prog_error "handle_lib_objects: unexpected variable name `$varname'"
1946 unless $varname =~ /^(.*)(?:LIB|LD)ADD$/;
1947 my $prefix = $1 || 'AM_';
1949 my $seen_libobjs = 0;
1950 my $flagvar = 0;
1952 transform_variable_recursively
1953 ($varname, $xname . '_DEPENDENCIES', 'am__DEPENDENCIES',
1954 ! $xname, INTERNAL,
1955 # Transformation function, run on each filename.
1956 sub {
1957 my ($subvar, $val, $cond, $full_cond) = @_;
1959 if ($val =~ /^-/)
1960 {
1961 # Skip -lfoo and -Ldir silently; these are explicitly allowed.
1962 if ($val !~ /^-[lL]/ &&
1963 # Skip -dlopen and -dlpreopen; these are explicitly allowed
1964 # for Libtool libraries or programs. (Actually we are a bit
1965 # laxest here since this code also applies to non-libtool
1966 # libraries or programs, for which -dlopen and -dlopreopen
1967 # are pure non-sence. Diagnosting this doesn't seems very
1968 # important: the developer will quickly get complaints from
1969 # the linker.)
1970 $val !~ /^-dl(?:pre)?open$/ &&
1971 # Only get this error once.
1972 ! $flagvar)
1973 {
1974 $flagvar = 1;
1975 # FIXME: should display a stack of nested variables
1976 # as context when $var != $subvar.
1977 err_var ($var, "linker flags such as `$val' belong in "
1978 . "`${prefix}LDFLAGS");
1979 }
1980 return ();
1981 }
1982 elsif ($val !~ /^\@.*\@$/)
1983 {
1984 # Assume we have a file of some sort, and output it into the
1985 # dependency variable. Autoconf substitutions are not output;
1986 # rarely is a new dependency substituted into e.g. foo_LDADD
1987 # -- but bad things (e.g. -lX11) are routinely substituted.
1988 # Note that LIBOBJS and ALLOCA are exceptions to this rule,
1989 # and handled specially below.
1990 return $val;
1991 }
1992 elsif ($val =~ /^\@(LT)?LIBOBJS\@$/)
1993 {
1994 handle_LIBOBJS ($subvar, $full_cond, $1);
1995 $seen_libobjs = 1;
1996 return $val;
1997 }
1998 elsif ($val =~ /^\@(LT)?ALLOCA\@$/)
1999 {
2000 handle_ALLOCA ($subvar, $full_cond, $1);
2001 return $val;
2002 }
2003 else
2004 {
2005 return ();
2006 }
2007 });
2009 return $seen_libobjs;
2010 }
2012 sub handle_LIBOBJS ($$$)
2013 {
2014 my ($var, $cond, $lt) = @_;
2015 $lt ||= '';
2016 my $myobjext = ($1 ? 'l' : '') . 'o';
2018 $var->requires_variables ("\@${lt}LIBOBJS\@ used", $lt . 'LIBOBJS')
2019 if ! keys %libsources;
2021 foreach my $iter (keys %libsources)
2022 {
2023 if ($iter =~ /\.[cly]$/)
2024 {
2025 &saw_extension ($&);
2026 &saw_extension ('.c');
2027 }
2029 if ($iter =~ /\.h$/)
2030 {
2031 require_file_with_macro ($cond, $var, FOREIGN, $iter);
2032 }
2033 elsif ($iter ne 'alloca.c')
2034 {
2035 my $rewrite = $iter;
2036 $rewrite =~ s/\.c$/.P$myobjext/;
2037 $dep_files{'$(DEPDIR)/' . $rewrite} = 1;
2038 $rewrite = "^" . quotemeta ($iter) . "\$";
2039 # Only require the file if it is not a built source.
2040 my $bs = var ('BUILT_SOURCES');
2041 if (! $bs || ! grep (/$rewrite/, $bs->value_as_list_recursive))
2042 {
2043 require_file_with_macro ($cond, $var, FOREIGN, $iter);
2044 }
2045 }
2046 }
2047 }
2049 sub handle_ALLOCA ($$$)
2050 {
2051 my ($var, $cond, $lt) = @_;
2052 my $myobjext = ($lt ? 'l' : '') . 'o';
2053 $lt ||= '';
2054 $var->requires_variables ("\@${lt}ALLOCA\@ used", $lt . 'ALLOCA');
2055 $dep_files{'$(DEPDIR)/alloca.P' . $myobjext} = 1;
2056 require_file_with_macro ($cond, $var, FOREIGN, 'alloca.c');
2057 &saw_extension ('c');
2058 }
2060 # Canonicalize the input parameter
2061 sub canonicalize
2062 {
2063 my ($string) = @_;
2064 $string =~ tr/A-Za-z0-9_\@/_/c;
2065 return $string;
2066 }
2068 # Canonicalize a name, and check to make sure the non-canonical name
2069 # is never used. Returns canonical name. Arguments are name and a
2070 # list of suffixes to check for.
2071 sub check_canonical_spelling
2072 {
2073 my ($name, @suffixes) = @_;
2075 my $xname = &canonicalize ($name);
2076 if ($xname ne $name)
2077 {
2078 foreach my $xt (@suffixes)
2079 {
2080 reject_var ("$name$xt", "use `$xname$xt', not `$name$xt'");
2081 }
2082 }
2084 return $xname;
2085 }
2088 # handle_compile ()
2089 # -----------------
2090 # Set up the compile suite.
2091 sub handle_compile ()
2092 {
2093 return
2094 unless $get_object_extension_was_run;
2096 # Boilerplate.
2097 my $default_includes = '';
2098 if (! option 'nostdinc')
2099 {
2100 $default_includes = ' -I. -I$(srcdir)';
2102 my $var = var 'CONFIG_HEADER';
2103 if ($var)
2104 {
2105 foreach my $hdr (split (' ', $var->variable_value))
2106 {
2107 $default_includes .= ' -I' . dirname ($hdr);
2108 }
2109 }
2110 }
2112 my (@mostly_rms, @dist_rms);
2113 foreach my $item (sort keys %compile_clean_files)
2114 {
2115 if ($compile_clean_files{$item} == MOSTLY_CLEAN)
2116 {
2117 push (@mostly_rms, "\t-rm -f $item");
2118 }
2119 elsif ($compile_clean_files{$item} == DIST_CLEAN)
2120 {
2121 push (@dist_rms, "\t-rm -f $item");
2122 }
2123 else
2124 {
2125 prog_error 'invalid entry in %compile_clean_files';
2126 }
2127 }
2129 my ($coms, $vars, $rules) =
2130 &file_contents_internal (1, "$libdir/am/compile.am",
2131 new Automake::Location,
2132 ('DEFAULT_INCLUDES' => $default_includes,
2133 'MOSTLYRMS' => join ("\n", @mostly_rms),
2134 'DISTRMS' => join ("\n", @dist_rms)));
2135 $output_vars .= $vars;
2136 $output_rules .= "$coms$rules";
2138 # Check for automatic de-ANSI-fication.
2139 if (option 'ansi2knr')
2140 {
2141 my ($ansi2knr_filename, $ansi2knr_where) = @{option 'ansi2knr'};
2142 my $ansi2knr_dir = '';
2144 require_variables ($ansi2knr_where, "option `ansi2knr' is used",
2145 TRUE, "ANSI2KNR", "U");
2147 # topdir is where ansi2knr should be.
2148 if ($ansi2knr_filename eq 'ansi2knr')
2149 {
2150 # Only require ansi2knr files if they should appear in
2151 # this directory.
2152 require_file ($ansi2knr_where, FOREIGN,
2153 'ansi2knr.c', 'ansi2knr.1');
2155 # ansi2knr needs to be built before subdirs, so unshift it.
2156 unshift (@all, '$(ANSI2KNR)');
2157 }
2158 else
2159 {
2160 $ansi2knr_dir = dirname ($ansi2knr_filename);
2161 }
2163 $output_rules .= &file_contents ('ansi2knr',
2164 new Automake::Location,
2165 'ANSI2KNR-DIR' => $ansi2knr_dir);
2167 }
2168 }
2170 # handle_libtool ()
2171 # -----------------
2172 # Handle libtool rules.
2173 sub handle_libtool
2174 {
2175 return unless var ('LIBTOOL');
2177 # Libtool requires some files, but only at top level.
2178 require_conf_file_with_macro (TRUE, 'LIBTOOL', FOREIGN, @libtool_files)
2179 if $relative_dir eq '.';
2181 my @libtool_rms;
2182 foreach my $item (sort keys %libtool_clean_directories)
2183 {
2184 my $dir = ($item eq '.') ? '' : "$item/";
2185 # .libs is for Unix, _libs for DOS.
2186 push (@libtool_rms, "\t-rm -rf ${dir}.libs ${dir}_libs");
2187 }
2189 # Output the libtool compilation rules.
2190 $output_rules .= &file_contents ('libtool',
2191 new Automake::Location,
2192 LTRMS => join ("\n", @libtool_rms));
2193 }
2195 # handle_programs ()
2196 # ------------------
2197 # Handle C programs.
2198 sub handle_programs
2199 {
2200 my @proglist = &am_install_var ('progs', 'PROGRAMS',
2201 'bin', 'sbin', 'libexec', 'pkglib',
2202 'noinst', 'check');
2203 return if ! @proglist;
2205 my $seen_global_libobjs =
2206 var ('LDADD') && &handle_lib_objects ('', 'LDADD');
2208 foreach my $pair (@proglist)
2209 {
2210 my ($where, $one_file) = @$pair;
2212 my $seen_libobjs = 0;
2213 my $obj = &get_object_extension ($one_file);
2215 # Strip any $(EXEEXT) suffix the user might have added, or this
2216 # will confuse &handle_source_transform and &check_canonical_spelling.
2217 # We'll add $(EXEEXT) back later anyway.
2218 $one_file =~ s/\$\(EXEEXT\)$//;
2220 # Canonicalize names and check for misspellings.
2221 my $xname = &check_canonical_spelling ($one_file, '_LDADD', '_LDFLAGS',
2222 '_SOURCES', '_OBJECTS',
2223 '_DEPENDENCIES');
2225 $where->push_context ("while processing program `$one_file'");
2226 $where->set (INTERNAL->get);
2228 my $linker = &handle_source_transform ($xname, $one_file, $obj, $where,
2229 NONLIBTOOL => 1, LIBTOOL => 0);
2231 if (var ($xname . "_LDADD"))
2232 {
2233 $seen_libobjs = &handle_lib_objects ($xname, $xname . '_LDADD');
2234 }
2235 else
2236 {
2237 # User didn't define prog_LDADD override. So do it.
2238 &define_variable ($xname . '_LDADD', '$(LDADD)', $where);
2240 # This does a bit too much work. But we need it to
2241 # generate _DEPENDENCIES when appropriate.
2242 if (var ('LDADD'))
2243 {
2244 $seen_libobjs = &handle_lib_objects ($xname, 'LDADD');
2245 }
2246 }
2248 reject_var ($xname . '_LIBADD',
2249 "use `${xname}_LDADD', not `${xname}_LIBADD'");
2251 set_seen ($xname . '_DEPENDENCIES');
2252 set_seen ($xname . '_LDFLAGS');
2254 # Determine program to use for link.
2255 my $xlink;
2256 if (var ($xname . '_LINK'))
2257 {
2258 $xlink = $xname . '_LINK';
2259 }
2260 else
2261 {
2262 $xlink = $linker ? $linker : 'LINK';
2263 }
2265 # If the resulting program lies into a subdirectory,
2266 # make sure this directory will exist.
2267 my $dirstamp = require_build_directory_maybe ($one_file);
2269 $output_rules .= &file_contents ('program',
2270 $where,
2271 PROGRAM => $one_file,
2272 XPROGRAM => $xname,
2273 XLINK => $xlink,
2274 DIRSTAMP => $dirstamp,
2275 EXEEXT => '$(EXEEXT)');
2277 if ($seen_libobjs || $seen_global_libobjs)
2278 {
2279 if (var ($xname . '_LDADD'))
2280 {
2281 &check_libobjs_sources ($xname, $xname . '_LDADD');
2282 }
2283 elsif (var ('LDADD'))
2284 {
2285 &check_libobjs_sources ($xname, 'LDADD');
2286 }
2287 }
2288 }
2289 }
2292 # handle_libraries ()
2293 # -------------------
2294 # Handle libraries.
2295 sub handle_libraries
2296 {
2297 my @liblist = &am_install_var ('libs', 'LIBRARIES',
2298 'lib', 'pkglib', 'noinst', 'check');
2299 return if ! @liblist;
2301 my @prefix = am_primary_prefixes ('LIBRARIES', 0, 'lib', 'pkglib',
2302 'noinst', 'check');
2304 if (@prefix)
2305 {
2306 my $var = rvar ($prefix[0] . '_LIBRARIES');
2307 $var->requires_variables ('library used', 'RANLIB');
2308 }
2310 foreach my $pair (@liblist)
2311 {
2312 my ($where, $onelib) = @$pair;
2314 my $seen_libobjs = 0;
2315 # Check that the library fits the standard naming convention.
2316 if (basename ($onelib) !~ /^lib.*\.a/)
2317 {
2318 error $where, "`$onelib' is not a standard library name";
2319 }
2321 $where->push_context ("while processing library `$onelib'");
2322 $where->set (INTERNAL->get);
2324 my $obj = &get_object_extension ($onelib);
2326 # Canonicalize names and check for misspellings.
2327 my $xlib = &check_canonical_spelling ($onelib, '_LIBADD', '_SOURCES',
2328 '_OBJECTS', '_DEPENDENCIES',
2329 '_AR');
2331 if (! var ($xlib . '_AR'))
2332 {
2333 &define_variable ($xlib . '_AR', '$(AR) $(ARFLAGS)', $where);
2334 }
2336 # Generate support for conditional object inclusion in
2337 # libraries.
2338 if (var ($xlib . '_LIBADD'))
2339 {
2340 if (&handle_lib_objects ($xlib, $xlib . '_LIBADD'))
2341 {
2342 $seen_libobjs = 1;
2343 }
2344 }
2345 else
2346 {
2347 &define_variable ($xlib . "_LIBADD", '', $where);
2348 }
2350 reject_var ($xlib . '_LDADD',
2351 "use `${xlib}_LIBADD', not `${xlib}_LDADD'");
2353 # Make sure we at look at this.
2354 set_seen ($xlib . '_DEPENDENCIES');
2356 &handle_source_transform ($xlib, $onelib, $obj, $where,
2357 NONLIBTOOL => 1, LIBTOOL => 0);
2359 # If the resulting library lies into a subdirectory,
2360 # make sure this directory will exist.
2361 my $dirstamp = require_build_directory_maybe ($onelib);
2363 $output_rules .= &file_contents ('library',
2364 $where,
2365 LIBRARY => $onelib,
2366 XLIBRARY => $xlib,
2367 DIRSTAMP => $dirstamp);
2369 if ($seen_libobjs)
2370 {
2371 if (var ($xlib . '_LIBADD'))
2372 {
2373 &check_libobjs_sources ($xlib, $xlib . '_LIBADD');
2374 }
2375 }
2376 }
2377 }
2380 # handle_ltlibraries ()
2381 # ---------------------
2382 # Handle shared libraries.
2383 sub handle_ltlibraries
2384 {
2385 my @liblist = &am_install_var ('ltlib', 'LTLIBRARIES',
2386 'noinst', 'lib', 'pkglib', 'check');
2387 return if ! @liblist;
2389 my %instdirs;
2390 my @prefix = am_primary_prefixes ('LTLIBRARIES', 0, 'lib', 'pkglib',
2391 'noinst', 'check');
2393 if (@prefix)
2394 {
2395 my $var = rvar ($prefix[0] . '_LTLIBRARIES');
2396 $var->requires_variables ('Libtool library used', 'LIBTOOL');
2397 }
2399 my %liblocations = (); # Location (in Makefile.am) of each library.
2401 foreach my $key (@prefix)
2402 {
2403 # Get the installation directory of each library.
2404 (my $dir = $key) =~ s/^nobase_//;
2405 my $var = rvar ($key . '_LTLIBRARIES');
2406 for my $pair ($var->value_as_list_recursive (location => 1))
2407 {
2408 my ($where, $lib) = @$pair;
2409 # We reject libraries which are installed in several places,
2410 # because we don't handle this in the rules (think `-rpath').
2411 #
2412 # However, we allow the same library to be listed many times
2413 # for the same directory. This is for users who need setups
2414 # like
2415 # if COND1
2416 # lib_LTLIBRARIES = libfoo.la
2417 # endif
2418 # if COND2
2419 # lib_LTLIBRARIES = libfoo.la
2420 # endif
2421 #
2422 # Actually this will also allow
2423 # lib_LTLIBRARIES = libfoo.la libfoo.la
2424 # Diagnosing this case doesn't seem worth the plain (we'd
2425 # have to fill $instdirs on a per-condition basis, check
2426 # implied conditions, etc.)
2427 if (defined $instdirs{$lib} && $instdirs{$lib} ne $dir)
2428 {
2429 error ($where, "`$lib' is already going to be installed in "
2430 . "`$instdirs{$lib}'", partial => 1);
2431 error ($liblocations{$lib}, "`$lib' previously declared here");
2432 }
2433 else
2434 {
2435 $instdirs{$lib} = $dir;
2436 $liblocations{$lib} = $where->clone;
2437 }
2438 }
2439 }
2441 foreach my $pair (@liblist)
2442 {
2443 my ($where, $onelib) = @$pair;
2445 my $seen_libobjs = 0;
2446 my $obj = &get_object_extension ($onelib);
2448 # Canonicalize names and check for misspellings.
2449 my $xlib = &check_canonical_spelling ($onelib, '_LIBADD', '_LDFLAGS',
2450 '_SOURCES', '_OBJECTS',
2451 '_DEPENDENCIES');
2453 # Check that the library fits the standard naming convention.
2454 my $libname_rx = "^lib.*\.la";
2455 my $ldvar = var ("${xlib}_LDFLAGS") || var ('AM_LDFLAGS');
2456 my $ldvar2 = var ('LDFLAGS');
2457 if (($ldvar && grep (/-module/, $ldvar->value_as_list_recursive))
2458 || ($ldvar2 && grep (/-module/, $ldvar2->value_as_list_recursive)))
2459 {
2460 # Relax name checking for libtool modules.
2461 $libname_rx = "\.la";
2462 }
2463 if (basename ($onelib) !~ /$libname_rx$/)
2464 {
2465 msg ('error-gnu/warn', $where,
2466 "`$onelib' is not a standard libtool library name");
2467 }
2469 $where->push_context ("while processing Libtool library `$onelib'");
2470 $where->set (INTERNAL->get);
2472 # Make sure we at look at these.
2473 set_seen ($xlib . '_LDFLAGS');
2474 set_seen ($xlib . '_DEPENDENCIES');
2476 # Generate support for conditional object inclusion in
2477 # libraries.
2478 if (var ($xlib . '_LIBADD'))
2479 {
2480 if (&handle_lib_objects ($xlib, $xlib . '_LIBADD'))
2481 {
2482 $seen_libobjs = 1;
2483 }
2484 }
2485 else
2486 {
2487 &define_variable ($xlib . "_LIBADD", '', $where);
2488 }
2490 reject_var ("${xlib}_LDADD",
2491 "use `${xlib}_LIBADD', not `${xlib}_LDADD'");
2494 my $linker = &handle_source_transform ($xlib, $onelib, $obj, $where,
2495 NONLIBTOOL => 0, LIBTOOL => 1);
2497 # Determine program to use for link.
2498 my $xlink;
2499 if (var ($xlib . '_LINK'))
2500 {
2501 $xlink = $xlib . '_LINK';
2502 }
2503 else
2504 {
2505 $xlink = $linker ? $linker : 'LINK';
2506 }
2508 my $rpath;
2509 if ($instdirs{$onelib} eq 'EXTRA'
2510 || $instdirs{$onelib} eq 'noinst'
2511 || $instdirs{$onelib} eq 'check')
2512 {
2513 # It's an EXTRA_ library, so we can't specify -rpath,
2514 # because we don't know where the library will end up.
2515 # The user probably knows, but generally speaking automake
2516 # doesn't -- and in fact configure could decide
2517 # dynamically between two different locations.
2518 $rpath = '';
2519 }
2520 else
2521 {
2522 $rpath = ('-rpath $(' . $instdirs{$onelib} . 'dir)');
2523 }
2525 # If the resulting library lies into a subdirectory,
2526 # make sure this directory will exist.
2527 my $dirstamp = require_build_directory_maybe ($onelib);
2529 # Remember to cleanup .libs/ in this directory.
2530 my $dirname = dirname $onelib;
2531 $libtool_clean_directories{$dirname} = 1;
2533 $output_rules .= &file_contents ('ltlibrary',
2534 $where,
2535 LTLIBRARY => $onelib,
2536 XLTLIBRARY => $xlib,
2537 RPATH => $rpath,
2538 XLINK => $xlink,
2539 DIRSTAMP => $dirstamp);
2540 if ($seen_libobjs)
2541 {
2542 if (var ($xlib . '_LIBADD'))
2543 {
2544 &check_libobjs_sources ($xlib, $xlib . '_LIBADD');
2545 }
2546 }
2547 }
2548 }
2550 # See if any _SOURCES variable were misspelled.
2551 sub check_typos ()
2552 {
2553 # It is ok if the user sets this particular variable.
2554 set_seen 'AM_LDFLAGS';
2556 foreach my $var (variables)
2557 {
2558 my $varname = $var->name;
2559 # A configure variable is always legitimate.
2560 next if exists $configure_vars{$varname};
2562 my $check = 0;
2563 foreach my $primary ('_SOURCES', '_LIBADD', '_LDADD', '_LDFLAGS',
2564 '_DEPENDENCIES')
2565 {
2566 if ($varname =~ /$primary$/)
2567 {
2568 $check = 1;
2569 last;
2570 }
2571 }
2572 next unless $check;
2574 for my $cond ($var->conditions->conds)
2575 {
2576 msg_var 'syntax', $var, "unused variable: `$varname'"
2577 unless $var->rdef ($cond)->seen;
2578 }
2579 }
2580 }
2583 # Handle scripts.
2584 sub handle_scripts
2585 {
2586 # NOTE we no longer automatically clean SCRIPTS, because it is
2587 # useful to sometimes distribute scripts verbatim. This happens
2588 # e.g. in Automake itself.
2589 &am_install_var ('-candist', 'scripts', 'SCRIPTS',
2590 'bin', 'sbin', 'libexec', 'pkgdata',
2591 'noinst', 'check');
2592 }
2597 ## ------------------------ ##
2598 ## Handling Texinfo files. ##
2599 ## ------------------------ ##
2601 # ($OUTFILE, $VFILE, @CLEAN_FILES)
2602 # &scan_texinfo_file ($FILENAME)
2603 # ------------------------------
2604 # $OUTFILE - name of the info file produced by $FILENAME.
2605 # $VFILE - name of the version.texi file used (undef if none).
2606 # @CLEAN_FILES - list of byproducts (indexes etc.)
2607 sub scan_texinfo_file ($)
2608 {
2609 my ($filename) = @_;
2611 # Some of the following extensions are always created, no matter
2612 # whether indexes are used or not. Other (like cps, fns, ... pgs)
2613 # are only created when they are used. We used to scan $FILENAME
2614 # for their use, but that is not enough: they could be used in
2615 # included files. We can't scan included files because we don't
2616 # know the include path. Therefore we always erase these files, no
2617 # matter whether they are used or not.
2618 #
2619 # (tmp is only created if an @macro is used and a certain e-TeX
2620 # feature is not available.)
2621 my %clean_suffixes =
2622 map { $_ => 1 } (qw(aux log toc tmp
2623 cp cps
2624 fn fns
2625 ky kys
2626 vr vrs
2627 tp tps
2628 pg pgs)); # grep 'new.*index' texinfo.tex
2630 my $texi = new Automake::XFile "< $filename";
2631 verb "reading $filename";
2633 my ($outfile, $vfile);
2634 while ($_ = $texi->getline)
2635 {
2636 if (/^\@setfilename +(\S+)/)
2637 {
2638 # Honor only the first @setfilename. (It's possible to have
2639 # more occurrences later if the manual shows examples of how
2640 # to use @setfilename...)
2641 next if $outfile;
2643 $outfile = $1;
2644 if ($outfile =~ /\.(.+)$/ && $1 ne 'info')
2645 {
2646 error ("$filename:$.",
2647 "output `$outfile' has unrecognized extension");
2648 return;
2649 }
2650 }
2651 # A "version.texi" file is actually any file whose name matches
2652 # "vers*.texi".
2653 elsif (/^\@include\s+(vers[^.]*\.texi)\s*$/)
2654 {
2655 $vfile = $1;
2656 }
2658 # Try to find new or unused indexes.
2660 # Creating a new category of index.
2661 elsif (/^\@def(code)?index (\w+)/)
2662 {
2663 $clean_suffixes{$2} = 1;
2664 $clean_suffixes{"$2s"} = 1;
2665 }
2667 # Merging an index into an another.
2668 elsif (/^\@syn(code)?index (\w+) (\w+)/)
2669 {
2670 delete $clean_suffixes{"$2s"};
2671 $clean_suffixes{"$3s"} = 1;
2672 }
2674 }
2676 if (! $outfile)
2677 {
2678 err_am "`$filename' missing \@setfilename";
2679 return;
2680 }
2682 my $infobase = basename ($filename);
2683 $infobase =~ s/\.te?xi(nfo)?$//;
2684 return ($outfile, $vfile,
2685 map { "$infobase.$_" } (sort keys %clean_suffixes));
2686 }
2689 # ($DIRSTAMP, @CLEAN_FILES)
2690 # output_texinfo_build_rules ($SOURCE, $DEST, $INSRC, @DEPENDENCIES)
2691 # ------------------------------------------------------------------
2692 # SOURCE - the source Texinfo file
2693 # DEST - the destination Info file
2694 # INSRC - wether DEST should be built in the source tree
2695 # DEPENDENCIES - known dependencies
2696 sub output_texinfo_build_rules ($$$@)
2697 {
2698 my ($source, $dest, $insrc, @deps) = @_;
2700 # Split `a.texi' into `a' and `.texi'.
2701 my ($spfx, $ssfx) = ($source =~ /^(.*?)(\.[^.]*)?$/);
2702 my ($dpfx, $dsfx) = ($dest =~ /^(.*?)(\.[^.]*)?$/);
2704 $ssfx ||= "";
2705 $dsfx ||= "";
2707 # We can output two kinds of rules: the "generic" rules use Make
2708 # suffix rules and are appropriate when $source and $dest do not lie
2709 # in a sub-directory; the "specific" rules are needed in the other
2710 # case.
2711 #
2712 # The former are output only once (this is not really apparent here,
2713 # but just remember that some logic deeper in Automake will not
2714 # output the same rule twice); while the later need to be output for
2715 # each Texinfo source.
2716 my $generic;
2717 my $makeinfoflags;
2718 my $sdir = dirname $source;
2719 if ($sdir eq '.' && dirname ($dest) eq '.')
2720 {
2721 $generic = 1;
2722 $makeinfoflags = '-I $(srcdir)';
2723 }
2724 else
2725 {
2726 $generic = 0;
2727 $makeinfoflags = "-I $sdir -I \$(srcdir)/$sdir";
2728 }
2730 # A directory can contain two kinds of info files: some built in the
2731 # source tree, and some built in the build tree. The rules are
2732 # different in each case. However we cannot output two different
2733 # set of generic rules. Because in-source builds are more usual, we
2734 # use generic rules in this case and fall back to "specific" rules
2735 # for build-dir builds. (It should not be a problem to invert this
2736 # if needed.)
2737 $generic = 0 unless $insrc;
2739 # We cannot use a suffix rule to build info files with an empty
2740 # extension. Otherwise we would output a single suffix inference
2741 # rule, with separate dependencies, as in
2742 #
2743 # .texi:
2744 # $(MAKEINFO) ...
2745 # foo.info: foo.texi
2746 #
2747 # which confuse Solaris make. (See the Autoconf manual for
2748 # details.) Therefore we use a specific rule in this case. This
2749 # applies to info files only (dvi and pdf files always have an
2750 # extension).
2751 my $generic_info = ($generic && $dsfx) ? 1 : 0;
2753 # If the resulting file lie into a subdirectory,
2754 # make sure this directory will exist.
2755 my $dirstamp = require_build_directory_maybe ($dest);
2757 my $dipfx = ($insrc ? '$(srcdir)/' : '') . $dpfx;
2759 $output_rules .= file_contents ('texibuild',
2760 new Automake::Location,
2761 DEPS => "@deps",
2762 DEST_PREFIX => $dpfx,
2763 DEST_INFO_PREFIX => $dipfx,
2764 DEST_SUFFIX => $dsfx,
2765 DIRSTAMP => $dirstamp,
2766 GENERIC => $generic,
2767 GENERIC_INFO => $generic_info,
2768 INSRC => $insrc,
2769 MAKEINFOFLAGS => $makeinfoflags,
2770 SOURCE => ($generic
2771 ? '$<' : $source),
2772 SOURCE_INFO => ($generic_info
2773 ? '$<' : $source),
2774 SOURCE_REAL => $source,
2775 SOURCE_SUFFIX => $ssfx,
2776 );
2777 return ($dirstamp, "$dpfx.dvi", "$dpfx.pdf", "$dpfx.ps", "$dpfx.html");
2778 }
2781 # $TEXICLEANS
2782 # handle_texinfo_helper ($info_texinfos)
2783 # --------------------------------------
2784 # Handle all Texinfo source; helper for handle_texinfo.
2785 sub handle_texinfo_helper ($)
2786 {
2787 my ($info_texinfos) = @_;
2788 my (@infobase, @info_deps_list, @texi_deps);
2789 my %versions;
2790 my $done = 0;
2791 my @texi_cleans;
2793 # Build a regex matching user-cleaned files.
2794 my $d = var 'DISTCLEANFILES';
2795 my $c = var 'CLEANFILES';
2796 my @f = ();
2797 push @f, $d->value_as_list_recursive (inner_expand => 1) if $d;
2798 push @f, $c->value_as_list_recursive (inner_expand => 1) if $c;
2799 @f = map { s|[^A-Za-z_0-9*\[\]\-]|\\$&|g; s|\*|[^/]*|g; $_; } @f;
2800 my $user_cleaned_files = '^(?:' . join ('|', @f) . ')$';
2802 foreach my $texi
2803 ($info_texinfos->value_as_list_recursive (inner_expand => 1))
2804 {
2805 my $infobase = $texi;
2806 $infobase =~ s/\.(txi|texinfo|texi)$//;
2808 if ($infobase eq $texi)
2809 {
2810 # FIXME: report line number.
2811 err_am "texinfo file `$texi' has unrecognized extension";
2812 next;
2813 }
2815 push @infobase, $infobase;
2817 # If 'version.texi' is referenced by input file, then include
2818 # automatic versioning capability.
2819 my ($out_file, $vtexi, @clean_files) =
2820 scan_texinfo_file ("$relative_dir/$texi")
2821 or next;
2822 push (@texi_cleans, @clean_files);
2824 # If the Texinfo source is in a subdirectory, create the
2825 # resulting info in this subdirectory. If it is in the current
2826 # directory, try hard to not prefix "./" because it breaks the
2827 # generic rules.
2828 my $outdir = dirname ($texi) . '/';
2829 $outdir = "" if $outdir eq './';
2830 $out_file = $outdir . $out_file;
2832 # Until Automake 1.6.3, .info files were built in the
2833 # source tree. This was an obstacle to the support of
2834 # non-distributed .info files, and non-distributed .texi
2835 # files.
2836 #
2837 # * Non-distributed .texi files is important in some packages
2838 # where .texi files are built at make time, probably using
2839 # other binaries built in the package itself, maybe using
2840 # tools or information found on the build host. Because
2841 # these files are not distributed they are always rebuilt
2842 # at make time; they should therefore not lie in the source
2843 # directory. One plan was to support this using
2844 # nodist_info_TEXINFOS or something similar. (Doing this
2845 # requires some sanity checks. For instance Automake should
2846 # not allow:
2847 # dist_info_TEXINFO = foo.texi
2848 # nodist_foo_TEXINFO = included.texi
2849 # because a distributed file should never depend on a
2850 # non-distributed file.)
2851 #
2852 # * If .texi files are not distributed, then .info files should
2853 # not be distributed either. There are also cases where one
2854 # want to distribute .texi files, but do not want to
2855 # distribute the .info files. For instance the Texinfo package
2856 # distributes the tool used to build these files; it would
2857 # be a waste of space to distribute them. It's not clear
2858 # which syntax we should use to indicate that .info files should
2859 # not be distributed. Akim Demaille suggested that eventually
2860 # we switch to a new syntax:
2861 # | Maybe we should take some inspiration from what's already
2862 # | done in the rest of Automake. Maybe there is too much
2863 # | syntactic sugar here, and you want
2864 # | nodist_INFO = bar.info
2865 # | dist_bar_info_SOURCES = bar.texi
2866 # | bar_texi_DEPENDENCIES = foo.texi
2867 # | with a bit of magic to have bar.info represent the whole
2868 # | bar*info set. That's a lot more verbose that the current
2869 # | situation, but it is # not new, hence the user has less
2870 # | to learn.
2871 # |
2872 # | But there is still too much room for meaningless specs:
2873 # | nodist_INFO = bar.info
2874 # | dist_bar_info_SOURCES = bar.texi
2875 # | dist_PS = bar.ps something-written-by-hand.ps
2876 # | nodist_bar_ps_SOURCES = bar.texi
2877 # | bar_texi_DEPENDENCIES = foo.texi
2878 # | here bar.texi is dist_ in line 2, and nodist_ in 4.
2879 #
2880 # Back to the point, it should be clear that in order to support
2881 # non-distributed .info files, we need to build them in the
2882 # build tree, not in the source tree (non-distributed .texi
2883 # files are less of a problem, because we do not output build
2884 # rules for them). In Automake 1.7 .info build rules have been
2885 # largely cleaned up so that .info files get always build in the
2886 # build tree, even when distributed. The idea was that
2887 # (1) if during a VPATH build the .info file was found to be
2888 # absent or out-of-date (in the source tree or in the
2889 # build tree), Make would rebuild it in the build tree.
2890 # If an up-to-date source-tree of the .info file existed,
2891 # make would not rebuild it in the build tree.
2892 # (2) having two copies of .info files, one in the source tree
2893 # and one (newer) in the build tree is not a problem
2894 # because `make dist' always pick files in the build tree
2895 # first.
2896 # However it turned out the be a bad idea for several reasons:
2897 # * Tru64, OpenBSD, and FreeBSD (not NetBSD) Make do behave
2898 # like GNU Make on point (1) above. These implementations
2899 # of Make would always rebuild .info files in the build
2900 # tree, even if such files were up to date in the source
2901 # tree. Consequently, it was impossible the perform a VPATH
2902 # build of a package containing Texinfo files using these
2903 # Make implementations.
2904 # (Refer to the Autoconf Manual, section "Limitation of
2905 # Make", paragraph "VPATH", item "target lookup", for
2906 # an account of the differences between these
2907 # implementations.)
2908 # * The GNU Coding Standards require these files to be built
2909 # in the source-tree (when they are distributed, that is).
2910 # * Keeping a fresher copy of distributed files in the
2911 # build tree can be annoying during development because
2912 # - if the files is kept under CVS, you really want it
2913 # to be updated in the source tree
2914 # - it os confusing that `make distclean' does not erase
2915 # all files in the build tree.
2916 #
2917 # Consequently, starting with Automake 1.8, .info files are
2918 # built in the source tree again. Because we still plan to
2919 # support non-distributed .info files at some point, we
2920 # have a single variable ($INSRC) that controls whether
2921 # the current .info file must be built in the source tree
2922 # or in the build tree. Actually this variable is switched
2923 # off for .info files that appear to be cleaned; this is
2924 # for backward compatibility with package such as Texinfo,
2925 # which do things like
2926 # info_TEXINFOS = texinfo.txi info-stnd.texi info.texi
2927 # DISTCLEANFILES = texinfo texinfo-* info*.info*
2928 # # Do not create info files for distribution.
2929 # dist-info:
2930 # in order not to distribute .info files.
2931 my $insrc = ($out_file =~ $user_cleaned_files) ? 0 : 1;
2933 my $soutdir = '$(srcdir)/' . $outdir;
2934 $outdir = $soutdir if $insrc;
2936 # If user specified file_TEXINFOS, then use that as explicit
2937 # dependency list.
2938 @texi_deps = ();
2939 push (@texi_deps, "$soutdir$vtexi") if $vtexi;
2941 my $canonical = canonicalize ($infobase);
2942 if (var ($canonical . "_TEXINFOS"))
2943 {
2944 push (@texi_deps, '$(' . $canonical . '_TEXINFOS)');
2945 push_dist_common ('$(' . $canonical . '_TEXINFOS)');
2946 }
2948 my ($dirstamp, @cfiles) =
2949 output_texinfo_build_rules ($texi, $out_file, $insrc, @texi_deps);
2950 push (@texi_cleans, @cfiles);
2952 push (@info_deps_list, $out_file);
2954 # If a vers*.texi file is needed, emit the rule.
2955 if ($vtexi)
2956 {
2957 err_am ("`$vtexi', included in `$texi', "
2958 . "also included in `$versions{$vtexi}'")
2959 if defined $versions{$vtexi};
2960 $versions{$vtexi} = $texi;
2962 # We number the stamp-vti files. This is doable since the
2963 # actual names don't matter much. We only number starting
2964 # with the second one, so that the common case looks nice.
2965 my $vti = ($done ? $done : 'vti');
2966 ++$done;
2968 # This is ugly, but it is our historical practice.
2969 if ($config_aux_dir_set_in_configure_in)
2970 {
2971 require_conf_file_with_macro (TRUE, 'info_TEXINFOS', FOREIGN,
2972 'mdate-sh');
2973 }
2974 else
2975 {
2976 require_file_with_macro (TRUE, 'info_TEXINFOS',
2977 FOREIGN, 'mdate-sh');
2978 }
2980 my $conf_dir;
2981 if ($config_aux_dir_set_in_configure_in)
2982 {
2983 $conf_dir = $config_aux_dir;
2984 $conf_dir .= '/' unless $conf_dir =~ /\/$/;
2985 }
2986 else
2987 {
2988 $conf_dir = '$(srcdir)/';
2989 }
2990 $output_rules .= file_contents ('texi-vers',
2991 new Automake::Location,
2992 TEXI => $texi,
2993 VTI => $vti,
2994 STAMPVTI => "${soutdir}stamp-$vti",
2995 VTEXI => "$soutdir$vtexi",
2996 MDDIR => $conf_dir,
2997 DIRSTAMP => $dirstamp);
2998 }
2999 }
3001 # Handle location of texinfo.tex.
3002 my $need_texi_file = 0;
3003 my $texinfodir;
3004 if (var ('TEXINFO_TEX'))
3005 {
3006 # The user defined TEXINFO_TEX so assume he knows what he is
3007 # doing.
3008 $texinfodir = ('$(srcdir)/'
3009 . dirname (variable_value ('TEXINFO_TEX')));
3010 }
3011 elsif (option 'cygnus')
3012 {
3013 $texinfodir = '$(top_srcdir)/../texinfo';
3014 define_variable ('TEXINFO_TEX', "$texinfodir/texinfo.tex", INTERNAL);
3015 }
3016 elsif ($config_aux_dir_set_in_configure_in)
3017 {
3018 $texinfodir = $config_aux_dir;
3019 define_variable ('TEXINFO_TEX', "$texinfodir/texinfo.tex", INTERNAL);
3020 $need_texi_file = 2; # so that we require_conf_file later
3021 }
3022 else
3023 {
3024 $texinfodir = '$(srcdir)';
3025 $need_texi_file = 1;
3026 }
3027 define_variable ('am__TEXINFO_TEX_DIR', $texinfodir, INTERNAL);
3029 push (@dist_targets, 'dist-info');
3031 if (! option 'no-installinfo')
3032 {
3033 # Make sure documentation is made and installed first. Use
3034 # $(INFO_DEPS), not 'info', because otherwise recursive makes
3035 # get run twice during "make all".
3036 unshift (@all, '$(INFO_DEPS)');
3037 }
3039 define_files_variable ("DVIS", @infobase, 'dvi', INTERNAL);
3040 define_files_variable ("PDFS", @infobase, 'pdf', INTERNAL);
3041 define_files_variable ("PSS", @infobase, 'ps', INTERNAL);
3042 define_files_variable ("HTMLS", @infobase, 'html', INTERNAL);
3044 # This next isn't strictly needed now -- the places that look here
3045 # could easily be changed to look in info_TEXINFOS. But this is
3046 # probably better, in case noinst_TEXINFOS is ever supported.
3047 define_variable ("TEXINFOS", variable_value ('info_TEXINFOS'), INTERNAL);
3049 # Do some error checking. Note that this file is not required
3050 # when in Cygnus mode; instead we defined TEXINFO_TEX explicitly
3051 # up above.
3052 if ($need_texi_file && ! option 'no-texinfo.tex')
3053 {
3054 if ($need_texi_file > 1)
3055 {
3056 require_conf_file_with_macro (TRUE, 'info_TEXINFOS', FOREIGN,
3057 'texinfo.tex');
3058 }
3059 else
3060 {
3061 require_file_with_macro (TRUE, 'info_TEXINFOS', FOREIGN,
3062 'texinfo.tex');
3063 }
3064 }
3066 return makefile_wrap ("", "\t ", @texi_cleans);
3067 }
3070 # handle_texinfo ()
3071 # -----------------
3072 # Handle all Texinfo source.
3073 sub handle_texinfo ()
3074 {
3075 reject_var 'TEXINFOS', "`TEXINFOS' is an anachronism; use `info_TEXINFOS'";
3076 # FIXME: I think this is an obsolete future feature name.
3077 reject_var 'html_TEXINFOS', "HTML generation not yet supported";
3079 my $info_texinfos = var ('info_TEXINFOS');
3080 my $texiclean = "";
3081 if ($info_texinfos)
3082 {
3083 $texiclean = handle_texinfo_helper ($info_texinfos);
3084 }
3085 $output_rules .= file_contents ('texinfos',
3086 new Automake::Location,
3087 TEXICLEAN => $texiclean,
3088 'LOCAL-TEXIS' => !!$info_texinfos);
3089 }
3092 # Handle any man pages.
3093 sub handle_man_pages
3094 {
3095 reject_var 'MANS', "`MANS' is an anachronism; use `man_MANS'";
3097 # Find all the sections in use. We do this by first looking for
3098 # "standard" sections, and then looking for any additional
3099 # sections used in man_MANS.
3100 my (%sections, %vlist);
3101 # We handle nodist_ for uniformity. man pages aren't distributed
3102 # by default so it isn't actually very important.
3103 foreach my $pfx ('', 'dist_', 'nodist_')
3104 {
3105 # Add more sections as needed.
3106 foreach my $section ('0'..'9', 'n', 'l')
3107 {
3108 my $varname = $pfx . 'man' . $section . '_MANS';
3109 if (var ($varname))
3110 {
3111 $sections{$section} = 1;
3112 $varname = '$(' . $varname . ')';
3113 $vlist{$varname} = 1;
3115 &push_dist_common ($varname)
3116 if $pfx eq 'dist_';
3117 }
3118 }
3120 my $varname = $pfx . 'man_MANS';
3121 my $var = var ($varname);
3122 if ($var)
3123 {
3124 foreach ($var->value_as_list_recursive)
3125 {
3126 # A page like `foo.1c' goes into man1dir.
3127 if (/\.([0-9a-z])([a-z]*)$/)
3128 {
3129 $sections{$1} = 1;
3130 }
3131 }
3133 $varname = '$(' . $varname . ')';
3134 $vlist{$varname} = 1;
3135 &push_dist_common ($varname)
3136 if $pfx eq 'dist_';
3137 }
3138 }
3140 return unless %sections;
3142 # Now for each section, generate an install and uninstall rule.
3143 # Sort sections so output is deterministic.
3144 foreach my $section (sort keys %sections)
3145 {
3146 $output_rules .= &file_contents ('mans',
3147 new Automake::Location,
3148 SECTION => $section);
3149 }
3151 my @mans = sort keys %vlist;
3152 $output_vars .= file_contents ('mans-vars',
3153 new Automake::Location,
3154 MANS => "@mans");
3156 push (@all, '$(MANS)')
3157 unless option 'no-installman';
3158 }
3160 # Handle DATA variables.
3161 sub handle_data
3162 {
3163 &am_install_var ('-noextra', '-candist', 'data', 'DATA',
3164 'data', 'sysconf', 'sharedstate', 'localstate',
3165 'pkgdata', 'lisp', 'noinst', 'check');
3166 }
3168 # Handle TAGS.
3169 sub handle_tags
3170 {
3171 my @tag_deps = ();
3172 my @ctag_deps = ();
3173 if (var ('SUBDIRS'))
3174 {
3175 $output_rules .= ("tags-recursive:\n"
3176 . "\tlist=\'\$(SUBDIRS)\'; for subdir in \$\$list; do \\\n"
3177 # Never fail here if a subdir fails; it
3178 # isn't important.
3179 . "\t test \"\$\$subdir\" = . || (cd \$\$subdir"
3180 . " && \$(MAKE) \$(AM_MAKEFLAGS) tags); \\\n"
3181 . "\tdone\n");
3182 push (@tag_deps, 'tags-recursive');
3183 &depend ('.PHONY', 'tags-recursive');
3185 $output_rules .= ("ctags-recursive:\n"
3186 . "\tlist=\'\$(SUBDIRS)\'; for subdir in \$\$list; do \\\n"
3187 # Never fail here if a subdir fails; it
3188 # isn't important.
3189 . "\t test \"\$\$subdir\" = . || (cd \$\$subdir"
3190 . " && \$(MAKE) \$(AM_MAKEFLAGS) ctags); \\\n"
3191 . "\tdone\n");
3192 push (@ctag_deps, 'ctags-recursive');
3193 &depend ('.PHONY', 'ctags-recursive');
3194 }
3196 if (&saw_sources_p (1)
3197 || var ('ETAGS_ARGS')
3198 || @tag_deps)
3199 {
3200 my @config;
3201 foreach my $spec (@config_headers)
3202 {
3203 my ($out, @ins) = split_config_file_spec ($spec);
3204 foreach my $in (@ins)
3205 {
3206 # If the config header source is in this directory,
3207 # require it.
3208 push @config, basename ($in)
3209 if $relative_dir eq dirname ($in);
3210 }
3211 }
3212 $output_rules .= &file_contents ('tags',
3213 new Automake::Location,
3214 CONFIG => "@config",
3215 TAGSDIRS => "@tag_deps",
3216 CTAGSDIRS => "@ctag_deps");
3218 set_seen 'TAGS_DEPENDENCIES';
3219 }
3220 elsif (reject_var ('TAGS_DEPENDENCIES',
3221 "doesn't make sense to define `TAGS_DEPENDENCIES'"
3222 . "without\nsources or `ETAGS_ARGS'"))
3223 {
3224 }
3225 else
3226 {
3227 # Every Makefile must define some sort of TAGS rule.
3228 # Otherwise, it would be possible for a top-level "make TAGS"
3229 # to fail because some subdirectory failed.
3230 $output_rules .= "tags: TAGS\nTAGS:\n\n";
3231 # Ditto ctags.
3232 $output_rules .= "ctags: CTAGS\nCTAGS:\n\n";
3233 }
3234 }
3236 # Handle multilib support.
3237 sub handle_multilib
3238 {
3239 if ($seen_multilib && $relative_dir eq '.')
3240 {
3241 $output_rules .= &file_contents ('multilib', new Automake::Location);
3242 push (@all, 'all-multi');
3243 }
3244 }
3247 # $BOOLEAN
3248 # &for_dist_common ($A, $B)
3249 # -------------------------
3250 # Subroutine for &handle_dist: sort files to dist.
3251 #
3252 # We put README first because it then becomes easier to make a
3253 # Usenet-compliant shar file (in these, README must be first).
3254 #
3255 # FIXME: do more ordering of files here.
3256 sub for_dist_common
3257 {
3258 return 0
3259 if $a eq $b;
3260 return -1
3261 if $a eq 'README';
3262 return 1
3263 if $b eq 'README';
3264 return $a cmp $b;
3265 }
3268 # handle_dist
3269 # -----------
3270 # Handle 'dist' target.
3271 sub handle_dist ()
3272 {
3273 return if option 'no-dist';
3275 # At least one of the archive formats must be enabled.
3276 if ($relative_dir eq '.')
3277 {
3278 my $archive_defined = option 'no-dist-gzip' ? 0 : 1;
3279 $archive_defined ||=
3280 grep { option "dist-$_" } ('shar', 'zip', 'tarZ', 'bzip2');
3281 error (option 'no-dist-gzip',
3282 "no-dist-gzip specified but no dist-* specified, "
3283 . "at least one archive format must be enabled")
3284 unless $archive_defined;
3285 }
3287 # Look for common files that should be included in distribution.
3288 # If the aux dir is set, and it does not have a Makefile.am, then
3289 # we check for these files there as well.
3290 my $check_aux = 0;
3291 my $auxdir = '';
3292 if ($relative_dir eq '.'
3293 && $config_aux_dir_set_in_configure_in)
3294 {
3295 ($auxdir = $config_aux_dir) =~ s,^\$\(top_srcdir\)/,,;
3296 if (! &is_make_dir ($auxdir))
3297 {
3298 $check_aux = 1;
3299 }
3300 }
3301 foreach my $cfile (@common_files)
3302 {
3303 if (-f ($relative_dir . "/" . $cfile)
3304 # The file might be absent, but if it can be built it's ok.
3305 || rule $cfile)
3306 {
3307 &push_dist_common ($cfile);
3308 }
3310 # Don't use `elsif' here because a file might meaningfully
3311 # appear in both directories.
3312 if ($check_aux && -f ($auxdir . '/' . $cfile))
3313 {
3314 &push_dist_common ($auxdir . '/' . $cfile);
3315 }
3316 }
3318 # We might copy elements from $configure_dist_common to
3319 # %dist_common if we think we need to. If the file appears in our
3320 # directory, we would have discovered it already, so we don't
3321 # check that. But if the file is in a subdir without a Makefile,
3322 # we want to distribute it here if we are doing `.'. Ugly!
3323 if ($relative_dir eq '.')
3324 {
3325 foreach my $file (split (' ' , $configure_dist_common))
3326 {
3327 push_dist_common ($file)
3328 unless is_make_dir (dirname ($file));
3329 }
3330 }
3332 # Files to distributed. Don't use ->value_as_list_recursive
3333 # as it recursively expands `$(dist_pkgdata_DATA)' etc.
3334 my @dist_common = split (' ', rvar ('DIST_COMMON')->variable_value);
3335 @dist_common = uniq (sort for_dist_common (@dist_common));
3336 variable_delete 'DIST_COMMON';
3337 define_pretty_variable ('DIST_COMMON', TRUE, INTERNAL, @dist_common);
3339 # Now that we've processed DIST_COMMON, disallow further attempts
3340 # to set it.
3341 $handle_dist_run = 1;
3343 # Scan EXTRA_DIST to see if we need to distribute anything from a
3344 # subdir. If so, add it to the list. I didn't want to do this
3345 # originally, but there were so many requests that I finally
3346 # relented.
3347 my $extra_dist = var ('EXTRA_DIST');
3348 if ($extra_dist)
3349 {
3350 # FIXME: This should be fixed to work with conditions. That
3351 # will require only making the entries in %dist_dirs under the
3352 # appropriate condition. This is meaningful if the nature of
3353 # the distribution should depend upon the configure options
3354 # used.
3355 foreach ($extra_dist->value_as_list_recursive)
3356 {
3357 next if /^\@.*\@$/;
3358 next unless s,/+[^/]+$,,;
3359 $dist_dirs{$_} = 1
3360 unless $_ eq '.';
3361 }
3362 }
3364 # We have to check DIST_COMMON for extra directories in case the
3365 # user put a source used in AC_OUTPUT into a subdir.
3366 my $topsrcdir = backname ($relative_dir);
3367 foreach (rvar ('DIST_COMMON')->value_as_list_recursive)
3368 {
3369 next if /^\@.*\@$/;
3370 s/\$\(top_srcdir\)/$topsrcdir/;
3371 s/\$\(srcdir\)/./;
3372 # Strip any leading `./'.
3373 s,^(:?\./+)*,,;
3374 next unless s,/+[^/]+$,,;
3375 $dist_dirs{$_} = 1
3376 unless $_ eq '.';
3377 }
3379 # Rule to check whether a distribution is viable.
3380 my %transform = ('DISTCHECK-HOOK' => !! rule 'distcheck-hook',
3381 'GETTEXT' => $seen_gettext && !$seen_gettext_external);
3383 # Prepend $(distdir) to each directory given.
3384 my %rewritten = map { '$(distdir)/' . "$_" => 1 } keys %dist_dirs;
3385 $transform{'DISTDIRS'} = join (' ', sort keys %rewritten);
3387 # If we have SUBDIRS, create all dist subdirectories and do
3388 # recursive build.
3389 my $subdirs = var ('SUBDIRS');
3390 if ($subdirs)
3391 {
3392 # If SUBDIRS is conditionally defined, then set DIST_SUBDIRS
3393 # to all possible directories, and use it. If DIST_SUBDIRS is
3394 # defined, just use it.
3395 my $dist_subdir_name;
3396 # Note that we check DIST_SUBDIRS first on purpose, so that
3397 # we don't call has_conditional_contents for now reason.
3398 # (In the past one project used so many conditional subdirectories
3399 # that calling has_conditional_contents on SUBDIRS caused
3400 # automake to grow to 150Mb -- this should not happen with
3401 # the current implementation of has_conditional_contents,
3402 # but it's more efficient to avoid the call anyway.)
3403 if (var ('DIST_SUBDIRS'))
3404 {
3405 $dist_subdir_name = 'DIST_SUBDIRS';
3406 }
3407 elsif ($subdirs->has_conditional_contents)
3408 {
3409 $dist_subdir_name = 'DIST_SUBDIRS';
3410 define_pretty_variable
3411 ('DIST_SUBDIRS', TRUE, INTERNAL,
3412 uniq ($subdirs->value_as_list_recursive));
3413 }
3414 else
3415 {
3416 $dist_subdir_name = 'SUBDIRS';
3417 # We always define this because that is what `distclean'
3418 # wants.
3419 define_pretty_variable ('DIST_SUBDIRS', TRUE, INTERNAL,
3420 '$(SUBDIRS)');
3421 }
3423 $transform{'DIST_SUBDIR_NAME'} = $dist_subdir_name;
3424 }
3426 # If the target `dist-hook' exists, make sure it is run. This
3427 # allows users to do random weird things to the distribution
3428 # before it is packaged up.
3429 push (@dist_targets, 'dist-hook')
3430 if rule 'dist-hook';
3431 $transform{'DIST-TARGETS'} = join(' ', @dist_targets);
3433 $output_rules .= &file_contents ('distdir',
3434 new Automake::Location,
3435 %transform);
3436 }
3439 # &handle_subdirs ()
3440 # ------------------
3441 # Handle subdirectories.
3442 sub handle_subdirs ()
3443 {
3444 my $subdirs = var ('SUBDIRS');
3445 return
3446 unless $subdirs;
3448 my @subdirs = $subdirs->value_as_list_recursive;
3449 my @dsubdirs = ();
3450 my $dsubdirs = var ('DIST_SUBDIRS');
3451 @dsubdirs = $dsubdirs->value_as_list_recursive
3452 if $dsubdirs;
3454 # If an `obj/' directory exists, BSD make will enter it before
3455 # reading `Makefile'. Hence the `Makefile' in the current directory
3456 # will not be read.
3457 #
3458 # % cat Makefile
3459 # all:
3460 # echo Hello
3461 # % cat obj/Makefile
3462 # all:
3463 # echo World
3464 # % make # GNU make
3465 # echo Hello
3466 # Hello
3467 # % pmake # BSD make
3468 # echo World
3469 # World
3470 msg_var ('portability', 'SUBDIRS',
3471 "naming a subdirectory `obj' causes troubles with BSD make")
3472 if grep ($_ eq 'obj', @subdirs);
3473 msg_var ('portability', 'DIST_SUBDIRS',
3474 "naming a subdirectory `obj' causes troubles with BSD make")
3475 if grep ($_ eq 'obj', @dsubdirs);
3477 # Make sure each directory mentioned in SUBDIRS actually exists.
3478 foreach my $dir (@subdirs)
3479 {
3480 # Skip directories substituted by configure.
3481 next if $dir =~ /^\@.*\@$/;
3483 if (! -d $relative_dir . '/' . $dir)
3484 {
3485 err_var ('SUBDIRS', "required directory $relative_dir/$dir "
3486 . "does not exist");
3487 next;
3488 }
3490 err_var 'SUBDIRS', "directory should not contain `/'"
3491 if $dir =~ /\//;
3492 }
3494 $output_rules .= &file_contents ('subdirs', new Automake::Location);
3495 rvar ('RECURSIVE_TARGETS')->rdef (TRUE)->{'pretty'} = VAR_SORTED; # Gross!
3496 }
3499 # ($REGEN, @DEPENDENCIES)
3500 # &scan_aclocal_m4
3501 # ----------------
3502 # If aclocal.m4 creation is automated, return the list of its dependencies.
3503 sub scan_aclocal_m4 ()
3504 {
3505 my $regen_aclocal = 0;
3507 set_seen 'CONFIG_STATUS_DEPENDENCIES';
3508 set_seen 'CONFIGURE_DEPENDENCIES';
3510 if (-f 'aclocal.m4')
3511 {
3512 &define_variable ("ACLOCAL_M4", '$(top_srcdir)/aclocal.m4', INTERNAL);
3514 my $aclocal = new Automake::XFile "< aclocal.m4";
3515 my $line = $aclocal->getline;
3516 $regen_aclocal = $line =~ 'generated automatically by aclocal';
3517 }
3519 my @ac_deps = ();
3521 if (set_seen ('ACLOCAL_M4_SOURCES'))
3522 {
3523 push (@ac_deps, '$(ACLOCAL_M4_SOURCES)');
3524 msg_var ('obsolete', 'ACLOCAL_M4_SOURCES',
3525 "`ACLOCAL_M4_SOURCES' is obsolete.\n"
3526 . "It should be safe to simply remove it.");
3527 }
3529 # Note that it might be possible that aclocal.m4 doesn't exist but
3530 # should be auto-generated. This case probably isn't very
3531 # important.
3533 return ($regen_aclocal, @ac_deps);
3534 }
3537 # @DEPENDENCIES
3538 # &prepend_srcdir (@INPUTS)
3539 # -------------------------
3540 # Prepend $(srcdir) or $(top_srcdir) to all @INPUTS. The idea is that
3541 # if an input file has a directory part the same as the current
3542 # directory, then the directory part is simply replaced by $(srcdir).
3543 # But if the directory part is different, then $(top_srcdir) is
3544 # prepended.
3545 sub prepend_srcdir (@)
3546 {
3547 my (@inputs) = @_;
3548 my @newinputs;
3550 foreach my $single (@inputs)
3551 {
3552 if (dirname ($single) eq $relative_dir)
3553 {
3554 push (@newinputs, '$(srcdir)/' . basename ($single));
3555 }
3556 else
3557 {
3558 push (@newinputs, '$(top_srcdir)/' . $single);
3559 }
3560 }
3561 return @newinputs;
3562 }
3564 # @DEPENDENCIES
3565 # rewrite_inputs_into_dependencies ($OUTPUT, @INPUTS)
3566 # ---------------------------------------------------
3567 # Compute a list of dependencies appropriate for the rebuild
3568 # rule of
3569 # AC_CONFIG_FILES($OUTPUT:$INPUT[0]:$INPUTS[1]:...)
3570 # Also distribute $INPUTs which are not build by another AC_CONFIG_FILES.
3571 sub rewrite_inputs_into_dependencies ($@)
3572 {
3573 my ($file, @inputs) = @_;
3574 my @res = ();
3576 for my $i (@inputs)
3577 {
3578 if (exists $ac_config_files_location{$i})
3579 {
3580 my $di = dirname $i;
3581 if ($di eq $relative_dir)
3582 {
3583 $i = basename $i;
3584 }
3585 # In the top-level Makefile we do not use $(top_builddir), because
3586 # we are already there, and since the targets are built without
3587 # a $(top_builddir), it helps BSD Make to match them with
3588 # dependencies.
3589 elsif ($relative_dir ne '.')
3590 {
3591 $i = '$(top_builddir)/' . $i;
3592 }
3593 }
3594 else
3595 {
3596 msg ('error', $ac_config_files_location{$file},
3597 "required file `$i' not found")
3598 unless exists $output_files{$i} || -f $i;
3599 ($i) = prepend_srcdir ($i);
3600 push_dist_common ($i);
3601 }
3602 push @res, $i;
3603 }
3604 return @res;
3605 }
3609 # &handle_configure ($MAKEFILE_AM, $MAKEFILE_IN, $MAKEFILE, @INPUTS)
3610 # ------------------------------------------------------------------
3611 # Handle remaking and configure stuff.
3612 # We need the name of the input file, to do proper remaking rules.
3613 sub handle_configure ($$$@)
3614 {
3615 my ($makefile_am, $makefile_in, $makefile, @inputs) = @_;
3617 prog_error 'empty @inputs'
3618 unless @inputs;
3620 my ($rel_makefile_am, $rel_makefile_in) = prepend_srcdir ($makefile_am,
3621 $makefile_in);
3622 my $rel_makefile = basename $makefile;
3624 my $colon_infile = ':' . join (':', @inputs);
3625 $colon_infile = '' if $colon_infile eq ":$makefile.in";
3626 my @rewritten = rewrite_inputs_into_dependencies ($makefile, @inputs);
3627 my ($regen_aclocal_m4, @aclocal_m4_deps) = scan_aclocal_m4;
3628 define_pretty_variable ('am__aclocal_m4_deps', TRUE, INTERNAL,
3629 @configure_deps, @aclocal_m4_deps,
3630 '$(top_srcdir)/' . $configure_ac);
3631 my @configuredeps = ('$(am__aclocal_m4_deps)', '$(CONFIGURE_DEPENDENCIES)');
3632 push @configuredeps, '$(ACLOCAL_M4)' if -f 'aclocal.m4';
3633 define_pretty_variable ('am__configure_deps', TRUE, INTERNAL,
3634 @configuredeps);
3636 $output_rules .= file_contents
3637 ('configure',
3638 new Automake::Location,
3639 MAKEFILE => $rel_makefile,
3640 'MAKEFILE-DEPS' => "@rewritten",
3641 'CONFIG-MAKEFILE' => ($relative_dir eq '.') ? '$@' : '$(subdir)/$@',
3642 'MAKEFILE-IN' => $rel_makefile_in,
3643 'MAKEFILE-IN-DEPS' => "@include_stack",
3644 'MAKEFILE-AM' => $rel_makefile_am,
3645 STRICTNESS => global_option 'cygnus'
3646 ? 'cygnus' : $strictness_name,
3647 'USE-DEPS' => global_option 'no-dependencies'
3648 ? ' --ignore-deps' : '',
3649 'MAKEFILE-AM-SOURCES' => "$makefile$colon_infile",
3650 'REGEN-ACLOCAL-M4' => $regen_aclocal_m4);
3652 if ($relative_dir eq '.')
3653 {
3654 &push_dist_common ('acconfig.h')
3655 if -f 'acconfig.h';
3656 }
3658 # If we have a configure header, require it.
3659 my $hdr_index = 0;
3660 my @distclean_config;
3661 foreach my $spec (@config_headers)
3662 {
3663 $hdr_index += 1;
3664 # $CONFIG_H_PATH: config.h from top level.
3665 my ($config_h_path, @ins) = split_config_file_spec ($spec);
3666 my $config_h_dir = dirname ($config_h_path);
3668 # If the header is in the current directory we want to build
3669 # the header here. Otherwise, if we're at the topmost
3670 # directory and the header's directory doesn't have a
3671 # Makefile, then we also want to build the header.
3672 if ($relative_dir eq $config_h_dir
3673 || ($relative_dir eq '.' && ! &is_make_dir ($config_h_dir)))
3674 {
3675 my ($cn_sans_dir, $stamp_dir);
3676 if ($relative_dir eq $config_h_dir)
3677 {
3678 $cn_sans_dir = basename ($config_h_path);
3679 $stamp_dir = '';
3680 }
3681 else
3682 {
3683 $cn_sans_dir = $config_h_path;
3684 if ($config_h_dir eq '.')
3685 {
3686 $stamp_dir = '';
3687 }
3688 else
3689 {
3690 $stamp_dir = $config_h_dir . '/';
3691 }
3692 }
3694 # This will also distribute all inputs.
3695 @ins = rewrite_inputs_into_dependencies ($config_h_path, @ins);
3697 # Header defined and in this directory.
3698 my @files;
3699 if (-f $config_h_path . '.top')
3700 {
3701 push (@files, "$cn_sans_dir.top");
3702 }
3703 if (-f $config_h_path . '.bot')
3704 {
3705 push (@files, "$cn_sans_dir.bot");
3706 }
3708 push_dist_common (@files);
3710 # For now, acconfig.h can only appear in the top srcdir.
3711 if (-f 'acconfig.h')
3712 {
3713 push (@files, '$(top_srcdir)/acconfig.h');
3714 }
3716 my $stamp = "${stamp_dir}stamp-h${hdr_index}";
3717 $output_rules .=
3718 file_contents ('remake-hdr',
3719 new Automake::Location,
3720 FILES => "@files",
3721 CONFIG_H => $cn_sans_dir,
3722 CONFIG_HIN => $ins[0],
3723 CONFIG_H_DEPS => "@ins",
3724 CONFIG_H_PATH => $config_h_path,
3725 STAMP => "$stamp");
3727 push @distclean_config, $cn_sans_dir, $stamp;
3728 }
3729 }
3731 $output_rules .= file_contents ('clean-hdr',
3732 new Automake::Location,
3733 FILES => "@distclean_config")
3734 if @distclean_config;
3736 # Distribute and define mkinstalldirs only if it is already present
3737 # in the package, for backward compatibility (some people my still
3738 # use $(mkinstalldirs)).
3739 my $mkidpath = $config_aux_path[0] . '/mkinstalldirs';
3740 if (-f $mkidpath)
3741 {
3742 # Use require_file so that any existingscript gets updated
3743 # by --force-missing.
3744 require_conf_file ($mkidpath, FOREIGN, 'mkinstalldirs');
3745 define_variable ('mkinstalldirs',
3746 "\$(SHELL) $config_aux_dir/mkinstalldirs", INTERNAL);
3747 }
3748 else
3749 {
3750 define_variable ('mkinstalldirs', '$(mkdir_p)', INTERNAL);
3751 }
3753 reject_var ('CONFIG_HEADER',
3754 "`CONFIG_HEADER' is an anachronism; now determined "
3755 . "automatically\nfrom `$configure_ac'");
3757 my @config_h;
3758 foreach my $spec (@config_headers)
3759 {
3760 my ($out, @ins) = split_config_file_spec ($spec);
3761 # Generate CONFIG_HEADER define.
3762 if ($relative_dir eq dirname ($out))
3763 {
3764 push @config_h, basename ($out);
3765 }
3766 else
3767 {
3768 push @config_h, "\$(top_builddir)/$out";
3769 }
3770 }
3771 define_variable ("CONFIG_HEADER", "@config_h", INTERNAL)
3772 if @config_h;
3774 # Now look for other files in this directory which must be remade
3775 # by config.status, and generate rules for them.
3776 my @actual_other_files = ();
3777 foreach my $lfile (@other_input_files)
3778 {
3779 my $file;
3780 my @inputs;
3781 if ($lfile =~ /^([^:]*):(.*)$/)
3782 {
3783 # This is the ":" syntax of AC_OUTPUT.
3784 $file = $1;
3785 @inputs = split (':', $2);
3786 }
3787 else
3788 {
3789 # Normal usage.
3790 $file = $lfile;
3791 @inputs = $file . '.in';
3792 }
3794 # Automake files should not be stored in here, but in %MAKE_LIST.
3795 prog_error ("$lfile in \@other_input_files\n"
3796 . "\@other_input_files = (@other_input_files)")
3797 if -f $file . '.am';
3799 my $local = basename ($file);
3801 # Make sure the dist directory for each input file is created.
3802 # We only have to do this at the topmost level though. This
3803 # is a bit ugly but it easier than spreading out the logic,
3804 # especially in cases like AC_OUTPUT(foo/out:bar/in), where
3805 # there is no Makefile in bar/.
3806 if ($relative_dir eq '.')
3807 {
3808 foreach (@inputs)
3809 {
3810 $dist_dirs{dirname ($_)} = 1;
3811 }
3812 }
3814 # We skip files that aren't in this directory. However, if
3815 # the file's directory does not have a Makefile, and we are
3816 # currently doing `.', then we create a rule to rebuild the
3817 # file in the subdir.
3818 my $fd = dirname ($file);
3819 if ($fd ne $relative_dir)
3820 {
3821 if ($relative_dir eq '.' && ! &is_make_dir ($fd))
3822 {
3823 $local = $file;
3824 }
3825 else
3826 {
3827 next;
3828 }
3829 }
3831 my @rewritten_inputs = rewrite_inputs_into_dependencies ($file, @inputs);
3833 $output_rules .= ($local . ': '
3834 . '$(top_builddir)/config.status '
3835 . "@rewritten_inputs\n"
3836 . "\t"
3837 . 'cd $(top_builddir) && '
3838 . '$(SHELL) ./config.status '
3839 . ($relative_dir eq '.' ? '' : '$(subdir)/')
3840 . '$@'
3841 . "\n");
3842 push (@actual_other_files, $local);
3843 }
3845 # For links we should clean destinations and distribute sources.
3846 foreach my $spec (@config_links)
3847 {
3848 my ($link, $file) = split /:/, $spec;
3849 # Some people do AC_CONFIG_LINKS($computed). We only handle
3850 # the DEST:SRC form.
3851 next unless $file;
3852 my $where = $ac_config_files_location{$link};
3854 # Skip destinations that contain shell variables.
3855 if ($link !~ /\$/)
3856 {
3857 # We skip links that aren't in this directory. However, if
3858 # the link's directory does not have a Makefile, and we are
3859 # currently doing `.', then we add the link to CONFIG_CLEAN_FILES
3860 # in `.'s Makefile.in.
3861 my $local = basename ($link);
3862 my $fd = dirname ($link);
3863 if ($fd ne $relative_dir)
3864 {
3865 if ($relative_dir eq '.' && ! &is_make_dir ($fd))
3866 {
3867 $local = $link;
3868 }
3869 else
3870 {
3871 $local = undef;
3872 }
3873 }
3874 push @actual_other_files, $local if $local;
3875 }
3877 # Do not process sources that contain shell variables.
3878 if ($file !~ /\$/)
3879 {
3880 my $fd = dirname ($file);
3882 # Make sure the dist directory for each input file is created.
3883 # We only have to do this at the topmost level though.
3884 if ($relative_dir eq '.')
3885 {
3886 $dist_dirs{$fd} = 1;
3887 }
3889 # We distribute files that are in this directory.
3890 # At the top-level (`.') we also distribute files whose
3891 # directory does not have a Makefile.
3892 if (($fd eq $relative_dir)
3893 || ($relative_dir eq '.' && ! &is_make_dir ($fd)))
3894 {
3895 # The following will distribute $file as a side-effect when
3896 # it is appropriate (i.e., when $file is not already an output).
3897 # We do not need the result, just the side-effect.
3898 rewrite_inputs_into_dependencies ($link, $file);
3899 }
3900 }
3901 }
3903 # These files get removed by "make distclean".
3904 define_pretty_variable ('CONFIG_CLEAN_FILES', TRUE, INTERNAL,
3905 @actual_other_files);
3906 }
3908 # Handle C headers.
3909 sub handle_headers
3910 {
3911 my @r = &am_install_var ('-defaultdist', 'header', 'HEADERS', 'include',
3912 'oldinclude', 'pkginclude',
3913 'noinst', 'check');
3914 foreach (@r)
3915 {
3916 next unless $_->[1] =~ /\..*$/;
3917 &saw_extension ($&);
3918 }
3919 }
3921 sub handle_gettext
3922 {
3923 return if ! $seen_gettext || $relative_dir ne '.';
3925 my $subdirs = var 'SUBDIRS';
3927 if (! $subdirs)
3928 {
3929 err_ac "AM_GNU_GETTEXT used but SUBDIRS not defined";
3930 return;
3931 }
3933 # Perform some sanity checks to help users get the right setup.
3934 # We disable these tests when po/ doesn't exist in order not to disallow
3935 # unusual gettext setups.
3936 #
3937 # Bruno Haible:
3938 # | The idea is:
3939 # |
3940 # | 1) If a package doesn't have a directory po/ at top level, it
3941 # | will likely have multiple po/ directories in subpackages.
3942 # |
3943 # | 2) It is useful to warn for the absence of intl/ if AM_GNU_GETTEXT
3944 # | is used without 'external'. It is also useful to warn for the
3945 # | presence of intl/ if AM_GNU_GETTEXT([external]) is used. Both
3946 # | warnings apply only to the usual layout of packages, therefore
3947 # | they should both be disabled if no po/ directory is found at
3948 # | top level.
3950 if (-d 'po')
3951 {
3952 my @subdirs = $subdirs->value_as_list_recursive;
3954 msg_var ('syntax', $subdirs,
3955 "AM_GNU_GETTEXT used but `po' not in SUBDIRS")
3956 if ! grep ($_ eq 'po', @subdirs);
3958 # intl/ is not required when AM_GNU_GETTEXT is called with
3959 # the `external' option.
3960 msg_var ('syntax', $subdirs,
3961 "AM_GNU_GETTEXT used but `intl' not in SUBDIRS")
3962 if (! $seen_gettext_external
3963 && ! grep ($_ eq 'intl', @subdirs));
3965 # intl/ should not be used with AM_GNU_GETTEXT([external])
3966 msg_var ('syntax', $subdirs,
3967 "`intl' should not be in SUBDIRS when "
3968 . "AM_GNU_GETTEXT([external]) is used")
3969 if ($seen_gettext_external && grep ($_ eq 'intl', @subdirs));
3970 }
3972 require_file ($ac_gettext_location, GNU, 'ABOUT-NLS');
3973 }
3975 # Handle footer elements.
3976 sub handle_footer
3977 {
3978 # NOTE don't use define_pretty_variable here, because
3979 # $contents{...} is already defined.
3980 $output_vars .= 'SOURCES = ' . variable_value ('SOURCES') . "\n\n"
3981 if variable_value ('SOURCES');
3983 reject_rule ('.SUFFIXES',
3984 "use variable `SUFFIXES', not target `.SUFFIXES'");
3986 # Note: AIX 4.1 /bin/make will fail if any suffix rule appears
3987 # before .SUFFIXES. So we make sure that .SUFFIXES appears before
3988 # anything else, by sticking it right after the default: target.
3989 $output_header .= ".SUFFIXES:\n";
3990 my $suffixes = var 'SUFFIXES';
3991 my @suffixes = Automake::Rule::suffixes;
3992 if (@suffixes || $suffixes)
3993 {
3994 # Make sure SUFFIXES has unique elements. Sort them to ensure
3995 # the output remains consistent. However, $(SUFFIXES) is
3996 # always at the start of the list, unsorted. This is done
3997 # because make will choose rules depending on the ordering of
3998 # suffixes, and this lets the user have some control. Push
3999 # actual suffixes, and not $(SUFFIXES). Some versions of make
4000 # do not like variable substitutions on the .SUFFIXES line.
4001 my @user_suffixes = ($suffixes
4002 ? $suffixes->value_as_list_recursive : ());
4004 my %suffixes = map { $_ => 1 } @suffixes;
4005 delete @suffixes{@user_suffixes};
4007 $output_header .= (".SUFFIXES: "
4008 . join (' ', @user_suffixes, sort keys %suffixes)
4009 . "\n");
4010 }
4012 $output_trailer .= file_contents ('footer', new Automake::Location);
4013 }
4016 # Generate `make install' rules.
4017 sub handle_install ()
4018 {
4019 $output_rules .= &file_contents
4020 ('install',
4021 new Automake::Location,
4022 maybe_BUILT_SOURCES => (set_seen ('BUILT_SOURCES')
4023 ? (" \$(BUILT_SOURCES)\n"
4024 . "\t\$(MAKE) \$(AM_MAKEFLAGS)")
4025 : ''),
4026 'installdirs-local' => (rule 'installdirs-local'
4027 ? ' installdirs-local' : ''),
4028 am__installdirs => variable_value ('am__installdirs') || '');
4029 }
4032 # Deal with all and all-am.
4033 sub handle_all ($)
4034 {
4035 my ($makefile) = @_;
4037 # Output `all-am'.
4039 # Put this at the beginning for the sake of non-GNU makes. This
4040 # is still wrong if these makes can run parallel jobs. But it is
4041 # right enough.
4042 unshift (@all, basename ($makefile));
4044 foreach my $spec (@config_headers)
4045 {
4046 my ($out, @ins) = split_config_file_spec ($spec);
4047 push (@all, basename ($out))
4048 if dirname ($out) eq $relative_dir;
4049 }
4051 # Install `all' hooks.
4052 if (rule "all-local")
4053 {
4054 push (@all, "all-local");
4055 &depend ('.PHONY', "all-local");
4056 }
4058 &pretty_print_rule ("all-am:", "\t\t", @all);
4059 &depend ('.PHONY', 'all-am', 'all');
4062 # Output `all'.
4064 my @local_headers = ();
4065 push @local_headers, '$(BUILT_SOURCES)'
4066 if var ('BUILT_SOURCES');
4067 foreach my $spec (@config_headers)
4068 {
4069 my ($out, @ins) = split_config_file_spec ($spec);
4070 push @local_headers, basename ($out)
4071 if dirname ($out) eq $relative_dir;
4072 }
4074 if (@local_headers)
4075 {
4076 # We need to make sure config.h is built before we recurse.
4077 # We also want to make sure that built sources are built
4078 # before any ordinary `all' targets are run. We can't do this
4079 # by changing the order of dependencies to the "all" because
4080 # that breaks when using parallel makes. Instead we handle
4081 # things explicitly.
4082 $output_all .= ("all: @local_headers"
4083 . "\n\t"
4084 . '$(MAKE) $(AM_MAKEFLAGS) '
4085 . (var ('SUBDIRS') ? 'all-recursive' : 'all-am')
4086 . "\n\n");
4087 }
4088 else
4089 {
4090 $output_all .= "all: " . (var ('SUBDIRS')
4091 ? 'all-recursive' : 'all-am') . "\n\n";
4092 }
4093 }
4096 # &do_check_merge_target ()
4097 # -------------------------
4098 # Handle check merge target specially.
4099 sub do_check_merge_target ()
4100 {
4101 if (rule 'check-local')
4102 {
4103 # User defined local form of target. So include it.
4104 push @check_tests, 'check-local';
4105 depend '.PHONY', 'check-local';
4106 }
4108 # In --cygnus mode, check doesn't depend on all.
4109 if (option 'cygnus')
4110 {
4111 # Just run the local check rules.
4112 pretty_print_rule ('check-am:', "\t\t", @check);
4113 }
4114 else
4115 {
4116 # The check target must depend on the local equivalent of
4117 # `all', to ensure all the primary targets are built. Then it
4118 # must build the local check rules.
4119 $output_rules .= "check-am: all-am\n";
4120 pretty_print_rule ("\t\$(MAKE) \$(AM_MAKEFLAGS)", "\t ",
4121 @check)
4122 if @check;
4123 }
4124 pretty_print_rule ("\t\$(MAKE) \$(AM_MAKEFLAGS)", "\t ",
4125 @check_tests)
4126 if @check_tests;
4128 depend '.PHONY', 'check', 'check-am';
4129 # Handle recursion. We have to honor BUILT_SOURCES like for `all:'.
4130 $output_rules .= ("check: "
4131 . (var ('BUILT_SOURCES')
4132 ? "\$(BUILT_SOURCES)\n\t\$(MAKE) \$(AM_MAKEFLAGS) "
4133 : '')
4134 . (var ('SUBDIRS') ? 'check-recursive' : 'check-am')
4135 . "\n");
4136 }
4138 # handle_clean ($MAKEFILE)
4139 # ------------------------
4140 # Handle all 'clean' targets.
4141 sub handle_clean ($)
4142 {
4143 my ($makefile) = @_;
4145 # Clean the files listed in user variables if they exist.
4146 $clean_files{'$(MOSTLYCLEANFILES)'} = MOSTLY_CLEAN
4147 if var ('MOSTLYCLEANFILES');
4148 $clean_files{'$(CLEANFILES)'} = CLEAN
4149 if var ('CLEANFILES');
4150 $clean_files{'$(DISTCLEANFILES)'} = DIST_CLEAN
4151 if var ('DISTCLEANFILES');
4152 $clean_files{'$(MAINTAINERCLEANFILES)'} = MAINTAINER_CLEAN
4153 if var ('MAINTAINERCLEANFILES');
4155 # Built sources are automatically removed by maintainer-clean.
4156 $clean_files{'$(BUILT_SOURCES)'} = MAINTAINER_CLEAN
4157 if var ('BUILT_SOURCES');
4159 # Compute a list of "rm"s to run for each target.
4160 my %rms = (MOSTLY_CLEAN, [],
4161 CLEAN, [],
4162 DIST_CLEAN, [],
4163 MAINTAINER_CLEAN, []);
4165 foreach my $file (keys %clean_files)
4166 {
4167 my $when = $clean_files{$file};
4168 prog_error 'invalid entry in %clean_files'
4169 unless exists $rms{$when};
4171 my $rm = "rm -f $file";
4172 # If file is a variable, make sure when don't call `rm -f' without args.
4173 $rm ="test -z \"$file\" || $rm"
4174 if ($file =~ /^\s*\$(\(.*\)|\{.*\})\s*$/);
4176 push @{$rms{$when}}, "\t-$rm\n";
4177 }
4179 $output_rules .= &file_contents
4180 ('clean',
4181 new Automake::Location,
4182 MOSTLYCLEAN_RMS => join ('', @{$rms{&MOSTLY_CLEAN}}),
4183 CLEAN_RMS => join ('', @{$rms{&CLEAN}}),
4184 DISTCLEAN_RMS => join ('', @{$rms{&DIST_CLEAN}}),
4185 MAINTAINER_CLEAN_RMS => join ('', @{$rms{&MAINTAINER_CLEAN}}),
4186 MAKEFILE => basename $makefile,
4187 );
4188 }
4191 # &target_cmp ($A, $B)
4192 # --------------------
4193 # Subroutine for &handle_factored_dependencies to let `.PHONY' be last.
4194 sub target_cmp
4195 {
4196 return 0
4197 if $a eq $b;
4198 return -1
4199 if $b eq '.PHONY';
4200 return 1
4201 if $a eq '.PHONY';
4202 return $a cmp $b;
4203 }
4206 # &handle_factored_dependencies ()
4207 # --------------------------------
4208 # Handle everything related to gathered targets.
4209 sub handle_factored_dependencies
4210 {
4211 # Reject bad hooks.
4212 foreach my $utarg ('uninstall-data-local', 'uninstall-data-hook',
4213 'uninstall-exec-local', 'uninstall-exec-hook')
4214 {
4215 my $x = $utarg;
4216 $x =~ s/(data|exec)-//;
4217 reject_rule ($utarg, "use `$x', not `$utarg'");
4218 }
4220 reject_rule ('install-local',
4221 "use `install-data-local' or `install-exec-local', "
4222 . "not `install-local'");
4224 reject_rule ('install-info-local',
4225 "`install-info-local' target defined but "
4226 . "`no-installinfo' option not in use")
4227 unless option 'no-installinfo';
4229 # Install the -local hooks.
4230 foreach (keys %dependencies)
4231 {
4232 # Hooks are installed on the -am targets.
4233 s/-am$// or next;
4234 if (rule "$_-local")
4235 {
4236 depend ("$_-am", "$_-local");
4237 depend ('.PHONY', "$_-local");
4238 }
4239 }
4241 # Install the -hook hooks.
4242 # FIXME: Why not be as liberal as we are with -local hooks?
4243 foreach ('install-exec', 'install-data', 'uninstall')
4244 {
4245 if (rule ("$_-hook"))
4246 {
4247 $actions{"$_-am"} .=
4248 ("\t\@\$(NORMAL_INSTALL)\n"
4249 . "\t" . '$(MAKE) $(AM_MAKEFLAGS) ' . "$_-hook\n");
4250 }
4251 }
4253 # All the required targets are phony.
4254 depend ('.PHONY', keys %required_targets);
4256 # Actually output gathered targets.
4257 foreach (sort target_cmp keys %dependencies)
4258 {
4259 # If there is nothing about this guy, skip it.
4260 next
4261 unless (@{$dependencies{$_}}
4262 || $actions{$_}
4263 || $required_targets{$_});
4265 # Define gathered targets in undefined conditions.
4266 # FIXME: Right now we must handle .PHONY as an exception,
4267 # because people write things like
4268 # .PHONY: myphonytarget
4269 # to append dependencies. This would not work if Automake
4270 # refrained from defining its own .PHONY target as it does
4271 # with other overridden targets.
4272 my @undefined_conds = (TRUE,);
4273 if ($_ ne '.PHONY')
4274 {
4275 @undefined_conds =
4276 Automake::Rule::define ($_, 'internal',
4277 RULE_AUTOMAKE, TRUE, INTERNAL);
4278 }
4279 my @uniq_deps = uniq (sort @{$dependencies{$_}});
4280 foreach my $cond (@undefined_conds)
4281 {
4282 my $condstr = $cond->subst_string;
4283 &pretty_print_rule ("$condstr$_:", "$condstr\t", @uniq_deps);
4284 $output_rules .= $actions{$_} if defined $actions{$_};
4285 $output_rules .= "\n";
4286 }
4287 }
4288 }
4291 # &handle_tests_dejagnu ()
4292 # ------------------------
4293 sub handle_tests_dejagnu
4294 {
4295 push (@check_tests, 'check-DEJAGNU');
4296 $output_rules .= file_contents ('dejagnu', new Automake::Location);
4297 }
4300 # Handle TESTS variable and other checks.
4301 sub handle_tests
4302 {
4303 if (option 'dejagnu')
4304 {
4305 &handle_tests_dejagnu;
4306 }
4307 else
4308 {
4309 foreach my $c ('DEJATOOL', 'RUNTEST', 'RUNTESTFLAGS')
4310 {
4311 reject_var ($c, "`$c' defined but `dejagnu' not in "
4312 . "`AUTOMAKE_OPTIONS'");
4313 }
4314 }
4316 if (var ('TESTS'))
4317 {
4318 push (@check_tests, 'check-TESTS');
4319 $output_rules .= &file_contents ('check', new Automake::Location);
4320 }
4321 }
4323 # Handle Emacs Lisp.
4324 sub handle_emacs_lisp
4325 {
4326 my @elfiles = &am_install_var ('-candist', 'lisp', 'LISP',
4327 'lisp', 'noinst');
4329 return if ! @elfiles;
4331 # Generate .elc files.
4332 my @elcfiles = map { $_->[1] . 'c' } @elfiles;
4334 define_pretty_variable ('ELCFILES', TRUE, INTERNAL, @elcfiles);
4335 define_pretty_variable ('am__ELFILES', TRUE, INTERNAL,
4336 map { $_->[1] } @elfiles);
4338 # Do not depend on the build rules if ELCFILES is empty.
4339 # This is necessary because overriding ELCFILES= is a documented
4340 # idiom to disable byte-compilation.
4341 if (variable_value ('ELCFILES'))
4342 {
4343 # It's important that all depends on elc-stamp so that
4344 # all .elc files get recompiled whenever a .el changes.
4345 # It's important that all depends on $(ELCFILES) so that
4346 # we can recover if any of them is deleted.
4347 push (@all, 'elc-stamp', '$(ELCFILES)');
4348 }
4350 require_variables ($elfiles[0][0], "Emacs Lisp sources seen", TRUE,
4351 'EMACS', 'lispdir');
4352 require_conf_file ($elfiles[0][0], FOREIGN, 'elisp-comp');
4353 &define_variable ('elisp_comp', $config_aux_dir . '/elisp-comp', INTERNAL);
4354 }
4356 # Handle Python
4357 sub handle_python
4358 {
4359 my @pyfiles = &am_install_var ('-defaultdist', 'python', 'PYTHON',
4360 'noinst');
4361 return if ! @pyfiles;
4363 require_variables ($pyfiles[0][0], "Python sources seen", TRUE, 'PYTHON');
4364 require_conf_file ($pyfiles[0][0], FOREIGN, 'py-compile');
4365 &define_variable ('py_compile', $config_aux_dir . '/py-compile', INTERNAL);
4366 }
4368 # Handle Java.
4369 sub handle_java
4370 {
4371 my @sourcelist = &am_install_var ('-candist',
4372 'java', 'JAVA',
4373 'java', 'noinst', 'check');
4374 return if ! @sourcelist;
4376 my @prefix = am_primary_prefixes ('JAVA', 1,
4377 'java', 'noinst', 'check');
4379 my $dir;
4380 foreach my $curs (@prefix)
4381 {
4382 next
4383 if $curs eq 'EXTRA';
4385 err_var "${curs}_JAVA", "multiple _JAVA primaries in use"
4386 if defined $dir;
4387 $dir = $curs;
4388 }
4391 push (@all, 'class' . $dir . '.stamp');
4392 }
4395 # Handle some of the minor options.
4396 sub handle_minor_options
4397 {
4398 if (option 'readme-alpha')
4399 {
4400 if ($relative_dir eq '.')
4401 {
4402 if ($package_version !~ /^$GNITS_VERSION_PATTERN$/)
4403 {
4404 msg ('error-gnits', $package_version_location,
4405 "version `$package_version' doesn't follow " .
4406 "Gnits standards");
4407 }
4408 if (defined $1 && -f 'README-alpha')
4409 {
4410 # This means we have an alpha release. See
4411 # GNITS_VERSION_PATTERN for details.
4412 push_dist_common ('README-alpha');
4413 }
4414 }
4415 }
4416 }
4418 ################################################################
4420 # ($OUTPUT, @INPUTS)
4421 # &split_config_file_spec ($SPEC)
4422 # -------------------------------
4423 # Decode the Autoconf syntax for config files (files, headers, links
4424 # etc.).
4425 sub split_config_file_spec ($)
4426 {
4427 my ($spec) = @_;
4428 my ($output, @inputs) = split (/:/, $spec);
4430 push @inputs, "$output.in"
4431 unless @inputs;
4433 return ($output, @inputs);
4434 }
4436 # $input
4437 # locate_am (@POSSIBLE_SOURCES)
4438 # -----------------------------
4439 # AC_CONFIG_FILES allow specifications such as Makefile:top.in:mid.in:bot.in
4440 # This functions returns the first *.in file for which a *.am exists.
4441 # It returns undef otherwise.
4442 sub locate_am (@)
4443 {
4444 my (@rest) = @_;
4445 my $input;
4446 foreach my $file (@rest)
4447 {
4448 if (($file =~ /^(.*)\.in$/) && -f "$1.am")
4449 {
4450 $input = $file;
4451 last;
4452 }
4453 }
4454 return $input;
4455 }
4457 my %make_list;
4459 # &scan_autoconf_config_files ($WHERE, $CONFIG-FILES)
4460 # ---------------------------------------------------
4461 # Study $CONFIG-FILES which is the first argument to AC_CONFIG_FILES
4462 # (or AC_OUTPUT).
4463 sub scan_autoconf_config_files ($$)
4464 {
4465 my ($where, $config_files) = @_;
4467 # Look at potential Makefile.am's.
4468 foreach (split ' ', $config_files)
4469 {
4470 # Must skip empty string for Perl 4.
4471 next if $_ eq "\\" || $_ eq '';
4473 # Handle $local:$input syntax.
4474 my ($local, @rest) = split (/:/);
4475 @rest = ("$local.in",) unless @rest;
4476 my $input = locate_am @rest;
4477 if ($input)
4478 {
4479 # We have a file that automake should generate.
4480 $make_list{$input} = join (':', ($local, @rest));
4481 }
4482 else
4483 {
4484 # We have a file that automake should cause to be
4485 # rebuilt, but shouldn't generate itself.
4486 push (@other_input_files, $_);
4487 }
4488 $ac_config_files_location{$local} = $where;
4489 }
4490 }
4493 # &scan_autoconf_traces ($FILENAME)
4494 # ---------------------------------
4495 sub scan_autoconf_traces ($)
4496 {
4497 my ($filename) = @_;
4499 # Macros to trace, with their minimal number of arguments.
4500 #
4501 # IMPORTANT: If you add a macro here, you should also add this macro
4502 # ========= to Automake-preselection in autoconf/lib/autom4te.in.
4503 my %traced = (
4504 AC_CANONICAL_HOST => 0,
4505 AC_CANONICAL_SYSTEM => 0,
4506 AC_CONFIG_AUX_DIR => 1,
4507 AC_CONFIG_FILES => 1,
4508 AC_CONFIG_HEADERS => 1,
4509 AC_CONFIG_LINKS => 1,
4510 AC_INIT => 0,
4511 AC_LIBSOURCE => 1,
4512 AC_LIBTOOL_TAGS => 1,
4513 AC_SUBST => 1,
4514 AM_AUTOMAKE_VERSION => 1,
4515 AM_CONDITIONAL => 2,
4516 AM_ENABLE_MULTILIB => 0,
4517 AM_GNU_GETTEXT => 0,
4518 AM_INIT_AUTOMAKE => 0,
4519 AM_MAINTAINER_MODE => 0,
4520 AM_PROG_CC_C_O => 0,
4521 m4_include => 1,
4522 m4_sinclude => 1,
4523 sinclude => 1,
4524 _LT_AC_TAGCONFIG => 0,
4525 );
4527 my $traces = ($ENV{AUTOCONF} || 'autoconf') . " ";
4529 # Use a separator unlikely to be used, not `:', the default, which
4530 # has a precise meaning for AC_CONFIG_FILES and so on.
4531 $traces .= join (' ',
4532 map { "--trace=$_" . ':\$f:\$l::\$n::\${::}%' }
4533 (keys %traced));
4535 my $tracefh = new Automake::XFile ("$traces $filename |");
4536 verb "reading $traces";
4538 while ($_ = $tracefh->getline)
4539 {
4540 chomp;
4541 my ($here, @args) = split /::/;
4542 my $where = new Automake::Location $here;
4543 my $macro = $args[0];
4545 prog_error ("unrequested trace `$macro'")
4546 unless exists $traced{$macro};
4548 # Skip and diagnose malformed calls.
4549 if ($#args < $traced{$macro})
4550 {
4551 msg ('syntax', $where, "not enough arguments for $macro");
4552 next;
4553 }
4555 # Alphabetical ordering please.
4556 if ($macro eq 'AC_CANONICAL_HOST')
4557 {
4558 if (! $seen_canonical)
4559 {
4560 $seen_canonical = AC_CANONICAL_HOST;
4561 $canonical_location = $where;
4562 }
4563 }
4564 elsif ($macro eq 'AC_CANONICAL_SYSTEM')
4565 {
4566 $seen_canonical = AC_CANONICAL_SYSTEM;
4567 $canonical_location = $where;
4568 }
4569 elsif ($macro eq 'AC_CONFIG_AUX_DIR')
4570 {
4571 @config_aux_path = $args[1];
4572 $config_aux_dir_set_in_configure_in = 1;
4573 }
4574 elsif ($macro eq 'AC_CONFIG_FILES')
4575 {
4576 # Look at potential Makefile.am's.
4577 scan_autoconf_config_files ($where, $args[1]);
4578 }
4579 elsif ($macro eq 'AC_CONFIG_HEADERS')
4580 {
4581 foreach my $spec (split (' ', $args[1]))
4582 {
4583 my ($dest, @src) = split (':', $spec);
4584 $ac_config_files_location{$dest} = $where;
4585 push @config_headers, $spec;
4586 }
4587 }
4588 elsif ($macro eq 'AC_CONFIG_LINKS')
4589 {
4590 foreach my $spec (split (' ', $args[1]))
4591 {
4592 my ($dest, $src) = split (':', $spec);
4593 $ac_config_files_location{$dest} = $where;
4594 push @config_links, $spec;
4595 }
4596 }
4597 elsif ($macro eq 'AC_INIT')
4598 {
4599 if (defined $args[2])
4600 {
4601 $package_version = $args[2];
4602 $package_version_location = $where;
4603 }
4604 }
4605 elsif ($macro eq 'AC_LIBSOURCE')
4606 {
4607 $libsources{$args[1]} = $here;
4608 }
4609 elsif ($macro eq 'AC_LIBTOOL_TAGS')
4610 {
4611 # Reset %libtool_tags, in case AC_LIBTOOL_TAGS is
4612 # expansed after _LT_AC_TAGCONFIG. We want to ignore
4613 # _LT_AC_TAGCONFIG if AC_LIBTOOL_TAGS is called.
4614 %libtool_tags = (CC => 1);
4615 $libtool_tags{$_} = 1 foreach split (' ', $args[1]);
4616 }
4617 elsif ($macro eq 'AC_SUBST')
4618 {
4619 # Just check for alphanumeric in AC_SUBST. If you do
4620 # AC_SUBST(5), then too bad.
4621 $configure_vars{$args[1]} = $where
4622 if $args[1] =~ /^\w+$/;
4623 }
4624 elsif ($macro eq 'AM_AUTOMAKE_VERSION')
4625 {
4626 error ($where,
4627 "version mismatch. This is Automake $VERSION,\n" .
4628 "but the definition used by this AM_INIT_AUTOMAKE\n" .
4629 "comes from Automake $args[1]. You should recreate\n" .
4630 "aclocal.m4 with aclocal and run automake again.\n",
4631 # $? = 63 is used to indicate version mismatch to missing.
4632 exit_code => 63)
4633 if $VERSION ne $args[1];
4635 $seen_automake_version = 1;
4636 }
4637 elsif ($macro eq 'AM_CONDITIONAL')
4638 {
4639 $configure_cond{$args[1]} = $where;
4640 }
4641 elsif ($macro eq 'AM_ENABLE_MULTILIB')
4642 {
4643 $seen_multilib = $where;
4644 }
4645 elsif ($macro eq 'AM_GNU_GETTEXT')
4646 {
4647 $seen_gettext = $where;
4648 $ac_gettext_location = $where;
4649 $seen_gettext_external = grep ($_ eq 'external', @args);
4650 }
4651 elsif ($macro eq 'AM_INIT_AUTOMAKE')
4652 {
4653 $seen_init_automake = $where;
4654 if (defined $args[2])
4655 {
4656 $package_version = $args[2];
4657 $package_version_location = $where;
4658 }
4659 elsif (defined $args[1])
4660 {
4661 exit $exit_code
4662 if (process_global_option_list ($where,
4663 split (' ', $args[1])));
4664 }
4665 }
4666 elsif ($macro eq 'AM_MAINTAINER_MODE')
4667 {
4668 $seen_maint_mode = $where;
4669 }
4670 elsif ($macro eq 'AM_PROG_CC_C_O')
4671 {
4672 $seen_cc_c_o = $where;
4673 }
4674 elsif ($macro eq 'm4_include'
4675 || $macro eq 'm4_sinclude'
4676 || $macro eq 'sinclude')
4677 {
4678 # Some modified versions of Autoconf don't use
4679 # forzen files. Consequently it's possible that we see all
4680 # m4_include's performed during Autoconf's startup.
4681 # Obviously we don't want to distribute Autoconf's files
4682 # so we skip absolute filenames here.
4683 push @configure_deps, '$(top_srcdir)/' . $args[1]
4684 unless $here =~ m,^(?:\w:)?[\\/],;
4685 # Keep track of the greatest timestamp.
4686 if (-e $args[1])
4687 {
4688 my $mtime = mtime $args[1];
4689 $configure_deps_greatest_timestamp = $mtime
4690 if $mtime > $configure_deps_greatest_timestamp;
4691 }
4692 }
4693 elsif ($macro eq '_LT_AC_TAGCONFIG')
4694 {
4695 # _LT_AC_TAGCONFIG is an old macro present in Libtool 1.5.
4696 # We use it to detect whether tags are supported. Our prefered
4697 # interface is AC_LIBTOOL_TAGS, but it was introduced in
4698 # Libtool 1.6. Ignore _LT_AC_TAGCONFIG if AC_LIBTOOL_TAGS has
4699 # been called.
4700 if (0 == keys %libtool_tags)
4701 {
4702 # Hardcode the tags supported by Libtool 1.5.
4703 %libtool_tags = (CC => 1, CXX => 1, GCJ => 1, F77 => 1);
4704 }
4705 }
4706 }
4708 $tracefh->close;
4709 }
4712 # &scan_autoconf_files ()
4713 # -----------------------
4714 # Check whether we use `configure.ac' or `configure.in'.
4715 # Scan it (and possibly `aclocal.m4') for interesting things.
4716 # We must scan aclocal.m4 because there might be AC_SUBSTs and such there.
4717 sub scan_autoconf_files ()
4718 {
4719 # Reinitialize libsources here. This isn't really necessary,
4720 # since we currently assume there is only one configure.ac. But
4721 # that won't always be the case.
4722 %libsources = ();
4724 # Keep track of the youngest configure dependency.
4725 $configure_deps_greatest_timestamp = mtime $configure_ac;
4726 if (-e 'aclocal.m4')
4727 {
4728 my $mtime = mtime 'aclocal.m4';
4729 $configure_deps_greatest_timestamp = $mtime
4730 if $mtime > $configure_deps_greatest_timestamp;
4731 }
4733 scan_autoconf_traces ($configure_ac);
4735 @configure_input_files = sort keys %make_list;
4736 # Set input and output files if not specified by user.
4737 if (! @input_files)
4738 {
4739 @input_files = @configure_input_files;
4740 %output_files = %make_list;
4741 }
4744 if (! $seen_init_automake)
4745 {
4746 err_ac ("no proper invocation of AM_INIT_AUTOMAKE was found.\nYou "
4747 . "should verify that $configure_ac invokes AM_INIT_AUTOMAKE,"
4748 . "\nthat aclocal.m4 is present in the top-level directory,\n"
4749 . "and that aclocal.m4 was recently regenerated "
4750 . "(using aclocal).");
4751 }
4752 else
4753 {
4754 if (! $seen_automake_version)
4755 {
4756 if (-f 'aclocal.m4')
4757 {
4758 error ($seen_init_automake,
4759 "your implementation of AM_INIT_AUTOMAKE comes from " .
4760 "an\nold Automake version. You should recreate " .
4761 "aclocal.m4\nwith aclocal and run automake again.\n",
4762 # $? = 63 is used to indicate version mismatch to missing.
4763 exit_code => 63);
4764 }
4765 else
4766 {
4767 error ($seen_init_automake,
4768 "no proper implementation of AM_INIT_AUTOMAKE was " .
4769 "found,\nprobably because aclocal.m4 is missing...\n" .
4770 "You should run aclocal to create this file, then\n" .
4771 "run automake again.\n");
4772 }
4773 }
4774 }
4776 # Look for some files we need. Always check for these. This
4777 # check must be done for every run, even those where we are only
4778 # looking at a subdir Makefile. We must set relative_dir so that
4779 # the file-finding machinery works.
4780 # FIXME: Is this broken because it needs dynamic scopes.
4781 # My tests seems to show it's not the case.
4782 $relative_dir = '.';
4783 require_conf_file ($configure_ac, FOREIGN, 'install-sh', 'missing');
4784 err_am "`install.sh' is an anachronism; use `install-sh' instead"
4785 if -f $config_aux_path[0] . '/install.sh';
4787 # Preserve dist_common for later.
4788 $configure_dist_common = variable_value ('DIST_COMMON') || '';
4789 }
4791 ################################################################
4793 # Set up for Cygnus mode.
4794 sub check_cygnus
4795 {
4796 my $cygnus = option 'cygnus';
4797 return unless $cygnus;
4799 set_strictness ('foreign');
4800 set_option ('no-installinfo', $cygnus);
4801 set_option ('no-dependencies', $cygnus);
4802 set_option ('no-dist', $cygnus);
4804 err_ac "`AM_MAINTAINER_MODE' required when --cygnus specified"
4805 if !$seen_maint_mode;
4806 }
4808 # Do any extra checking for GNU standards.
4809 sub check_gnu_standards
4810 {
4811 if ($relative_dir eq '.')
4812 {
4813 # In top level (or only) directory.
4814 require_file ("$am_file.am", GNU,
4815 qw/INSTALL NEWS README AUTHORS ChangeLog/);
4817 # Accept one of these three licenses; default to COPYING.
4818 # Make sure we do not overwrite an existing license.
4819 my $license;
4820 foreach (qw /COPYING COPYING.LIB COPYING.LESSER/)
4821 {
4822 if (-f $_)
4823 {
4824 $license = $_;
4825 last;
4826 }
4827 }
4828 require_file ("$am_file.am", GNU, 'COPYING')
4829 unless $license;
4830 }
4832 for my $opt ('no-installman', 'no-installinfo')
4833 {
4834 msg ('error-gnu', option $opt,
4835 "option `$opt' disallowed by GNU standards")
4836 if option $opt;
4837 }
4838 }
4840 # Do any extra checking for GNITS standards.
4841 sub check_gnits_standards
4842 {
4843 if ($relative_dir eq '.')
4844 {
4845 # In top level (or only) directory.
4846 require_file ("$am_file.am", GNITS, 'THANKS');
4847 }
4848 }
4850 ################################################################
4851 #
4852 # Functions to handle files of each language.
4854 # Each `lang_X_rewrite($DIRECTORY, $BASE, $EXT)' function follows a
4855 # simple formula: Return value is LANG_SUBDIR if the resulting object
4856 # file should be in a subdir if the source file is, LANG_PROCESS if
4857 # file is to be dealt with, LANG_IGNORE otherwise.
4859 # Much of the actual processing is handled in
4860 # handle_single_transform. These functions exist so that
4861 # auxiliary information can be recorded for a later cleanup pass.
4862 # Note that the calls to these functions are computed, so don't bother
4863 # searching for their precise names in the source.
4865 # This is just a convenience function that can be used to determine
4866 # when a subdir object should be used.
4867 sub lang_sub_obj
4868 {
4869 return option 'subdir-objects' ? LANG_SUBDIR : LANG_PROCESS;
4870 }
4872 # Rewrite a single C source file.
4873 sub lang_c_rewrite
4874 {
4875 my ($directory, $base, $ext) = @_;
4877 if (option 'ansi2knr' && $base =~ /_$/)
4878 {
4879 # FIXME: include line number in error.
4880 err_am "C source file `$base.c' would be deleted by ansi2knr rules";
4881 }
4883 my $r = LANG_PROCESS;
4884 if (option 'subdir-objects')
4885 {
4886 $r = LANG_SUBDIR;
4887 $base = $directory . '/' . $base
4888 unless $directory eq '.' || $directory eq '';
4890 err_am ("C objects in subdir but `AM_PROG_CC_C_O' "
4891 . "not in `$configure_ac'",
4892 uniq_scope => US_GLOBAL)
4893 unless $seen_cc_c_o;
4895 require_conf_file ("$am_file.am", FOREIGN, 'compile');
4897 # In this case we already have the directory information, so
4898 # don't add it again.
4899 $de_ansi_files{$base} = '';
4900 }
4901 else
4902 {
4903 $de_ansi_files{$base} = (($directory eq '.' || $directory eq '')
4904 ? ''
4905 : "$directory/");
4906 }
4908 return $r;
4909 }
4911 # Rewrite a single C++ source file.
4912 sub lang_cxx_rewrite
4913 {
4914 return &lang_sub_obj;
4915 }
4917 # Rewrite a single header file.
4918 sub lang_header_rewrite
4919 {
4920 # Header files are simply ignored.
4921 return LANG_IGNORE;
4922 }
4924 # Rewrite a single yacc file.
4925 sub lang_yacc_rewrite
4926 {
4927 my ($directory, $base, $ext) = @_;
4929 my $r = &lang_sub_obj;
4930 (my $newext = $ext) =~ tr/y/c/;
4931 return ($r, $newext);
4932 }
4934 # Rewrite a single yacc++ file.
4935 sub lang_yaccxx_rewrite
4936 {
4937 my ($directory, $base, $ext) = @_;
4939 my $r = &lang_sub_obj;
4940 (my $newext = $ext) =~ tr/y/c/;
4941 return ($r, $newext);
4942 }
4944 # Rewrite a single lex file.
4945 sub lang_lex_rewrite
4946 {
4947 my ($directory, $base, $ext) = @_;
4949 my $r = &lang_sub_obj;
4950 (my $newext = $ext) =~ tr/l/c/;
4951 return ($r, $newext);
4952 }
4954 # Rewrite a single lex++ file.
4955 sub lang_lexxx_rewrite
4956 {
4957 my ($directory, $base, $ext) = @_;
4959 my $r = &lang_sub_obj;
4960 (my $newext = $ext) =~ tr/l/c/;
4961 return ($r, $newext);
4962 }
4964 # Rewrite a single assembly file.
4965 sub lang_asm_rewrite
4966 {
4967 return &lang_sub_obj;
4968 }
4970 # Rewrite a single Fortran 77 file.
4971 sub lang_f77_rewrite
4972 {
4973 return LANG_PROCESS;
4974 }
4976 # Rewrite a single preprocessed Fortran 77 file.
4977 sub lang_ppf77_rewrite
4978 {
4979 return LANG_PROCESS;
4980 }
4982 # Rewrite a single ratfor file.
4983 sub lang_ratfor_rewrite
4984 {
4985 return LANG_PROCESS;
4986 }
4988 # Rewrite a single Objective C file.
4989 sub lang_objc_rewrite
4990 {
4991 return &lang_sub_obj;
4992 }
4994 # Rewrite a single Java file.
4995 sub lang_java_rewrite
4996 {
4997 return LANG_SUBDIR;
4998 }
5000 # The lang_X_finish functions are called after all source file
5001 # processing is done. Each should handle defining rules for the
5002 # language, etc. A finish function is only called if a source file of
5003 # the appropriate type has been seen.
5005 sub lang_c_finish
5006 {
5007 # Push all libobjs files onto de_ansi_files. We actually only
5008 # push files which exist in the current directory, and which are
5009 # genuine source files.
5010 foreach my $file (keys %libsources)
5011 {
5012 if ($file =~ /^(.*)\.[cly]$/ && -f "$relative_dir/$file")
5013 {
5014 $de_ansi_files{$1} = ''
5015 }
5016 }
5018 if (option 'ansi2knr' && keys %de_ansi_files)
5019 {
5020 # Make all _.c files depend on their corresponding .c files.
5021 my @objects;
5022 foreach my $base (sort keys %de_ansi_files)
5023 {
5024 # Each _.c file must depend on ansi2knr; otherwise it
5025 # might be used in a parallel build before it is built.
5026 # We need to support files in the srcdir and in the build
5027 # dir (because these files might be auto-generated. But
5028 # we can't use $< -- some makes only define $< during a
5029 # suffix rule.
5030 my $ansfile = $de_ansi_files{$base} . $base . '.c';
5031 $output_rules .= ($base . "_.c: $ansfile \$(ANSI2KNR)\n\t"
5032 . '$(CPP) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS) $(CPPFLAGS) '
5033 . '`if test -f $(srcdir)/' . $ansfile
5034 . '; then echo $(srcdir)/' . $ansfile
5035 . '; else echo ' . $ansfile . '; fi` '
5036 . "| sed 's/^# \\([0-9]\\)/#line \\1/' "
5037 . '| $(ANSI2KNR) > $@'
5038 # If ansi2knr fails then we shouldn't
5039 # create the _.c file
5040 . " || rm -f \$\@\n");
5041 push (@objects, $base . '_.$(OBJEXT)');
5042 push (@objects, $base . '_.lo')
5043 if var ('LIBTOOL');
5045 # Explicitly clean the _.c files if they are in a
5046 # subdirectory. (In the current directory they get erased
5047 # by a `rm -f *_.c' rule.)
5048 $clean_files{$base . '_.c'} = MOSTLY_CLEAN
5049 if dirname ($base) ne '.';
5050 }
5052 # Make all _.o (and _.lo) files depend on ansi2knr.
5053 # Use a sneaky little hack to make it print nicely.
5054 &pretty_print_rule ('', '', @objects, ':', '$(ANSI2KNR)');
5055 }
5056 }
5058 # This is a yacc helper which is called whenever we have decided to
5059 # compile a yacc file.
5060 sub lang_yacc_target_hook
5061 {
5062 my ($self, $aggregate, $output, $input) = @_;
5064 my $flag = $aggregate . "_YFLAGS";
5065 my $flagvar = var $flag;
5066 my $YFLAGSvar = var 'YFLAGS';
5067 if (($flagvar && $flagvar->variable_value =~ /$DASH_D_PATTERN/o)
5068 || ($YFLAGSvar && $YFLAGSvar->variable_value =~ /$DASH_D_PATTERN/o))
5069 {
5070 (my $output_base = $output) =~ s/$KNOWN_EXTENSIONS_PATTERN$//;
5071 my $header = $output_base . '.h';
5073 # Found a `-d' that applies to the compilation of this file.
5074 # Add a dependency for the generated header file, and arrange
5075 # for that file to be included in the distribution.
5076 # FIXME: this fails for `nodist_*_SOURCES'.
5077 $output_rules .= ("${header}: $output\n"
5078 # Recover from removal of $header
5079 . "\t\@if test ! -f \$@; then \\\n"
5080 . "\t rm -f $output; \\\n"
5081 . "\t \$(MAKE) $output; \\\n"
5082 . "\telse :; fi\n");
5083 &push_dist_common ($header);
5084 # If the files are built in the build directory, then we want
5085 # to remove them with `make clean'. If they are in srcdir
5086 # they shouldn't be touched. However, we can't determine this
5087 # statically, and the GNU rules say that yacc/lex output files
5088 # should be removed by maintainer-clean. So that's what we
5089 # do.
5090 $clean_files{$header} = MAINTAINER_CLEAN;
5091 }
5092 # Erase $OUTPUT on `make maintainer-clean' (by GNU standards).
5093 # See the comment above for $HEADER.
5094 $clean_files{$output} = MAINTAINER_CLEAN;
5095 }
5097 # This is a lex helper which is called whenever we have decided to
5098 # compile a lex file.
5099 sub lang_lex_target_hook
5100 {
5101 my ($self, $aggregate, $output, $input) = @_;
5102 # If the files are built in the build directory, then we want to
5103 # remove them with `make clean'. If they are in srcdir they
5104 # shouldn't be touched. However, we can't determine this
5105 # statically, and the GNU rules say that yacc/lex output files
5106 # should be removed by maintainer-clean. So that's what we do.
5107 $clean_files{$output} = MAINTAINER_CLEAN;
5108 }
5110 # This is a helper for both lex and yacc.
5111 sub yacc_lex_finish_helper
5112 {
5113 return if defined $language_scratch{'lex-yacc-done'};
5114 $language_scratch{'lex-yacc-done'} = 1;
5116 # If there is more than one distinct yacc (resp lex) source file
5117 # in a given directory, then the `ylwrap' program is required to
5118 # allow parallel builds to work correctly. FIXME: for now, no
5119 # line number.
5120 require_conf_file ($configure_ac, FOREIGN, 'ylwrap');
5121 if ($config_aux_dir_set_in_configure_in)
5122 {
5123 &define_variable ('YLWRAP', $config_aux_dir . "/ylwrap", INTERNAL);
5124 }
5125 else
5126 {
5127 &define_variable ('YLWRAP', '$(top_srcdir)/ylwrap', INTERNAL);
5128 }
5129 }
5131 sub lang_yacc_finish
5132 {
5133 return if defined $language_scratch{'yacc-done'};
5134 $language_scratch{'yacc-done'} = 1;
5136 reject_var 'YACCFLAGS', "`YACCFLAGS' obsolete; use `YFLAGS' instead";
5138 &yacc_lex_finish_helper
5139 if count_files_for_language ('yacc') > 1;
5140 }
5143 sub lang_lex_finish
5144 {
5145 return if defined $language_scratch{'lex-done'};
5146 $language_scratch{'lex-done'} = 1;
5148 &yacc_lex_finish_helper
5149 if count_files_for_language ('lex') > 1;
5150 }
5153 # Given a hash table of linker names, pick the name that has the most
5154 # precedence. This is lame, but something has to have global
5155 # knowledge in order to eliminate the conflict. Add more linkers as
5156 # required.
5157 sub resolve_linker
5158 {
5159 my (%linkers) = @_;
5161 foreach my $l (qw(GCJLINK CXXLINK F77LINK OBJCLINK))
5162 {
5163 return $l if defined $linkers{$l};
5164 }
5165 return 'LINK';
5166 }
5168 # Called to indicate that an extension was used.
5169 sub saw_extension
5170 {
5171 my ($ext) = @_;
5172 if (! defined $extension_seen{$ext})
5173 {
5174 $extension_seen{$ext} = 1;
5175 }
5176 else
5177 {
5178 ++$extension_seen{$ext};
5179 }
5180 }
5182 # Return the number of files seen for a given language. Knows about
5183 # special cases we care about. FIXME: this is hideous. We need
5184 # something that involves real language objects. For instance yacc
5185 # and yaccxx could both derive from a common yacc class which would
5186 # know about the strange ylwrap requirement. (Or better yet we could
5187 # just not support legacy yacc!)
5188 sub count_files_for_language
5189 {
5190 my ($name) = @_;
5192 my @names;
5193 if ($name eq 'yacc' || $name eq 'yaccxx')
5194 {
5195 @names = ('yacc', 'yaccxx');
5196 }
5197 elsif ($name eq 'lex' || $name eq 'lexxx')
5198 {
5199 @names = ('lex', 'lexxx');
5200 }
5201 else
5202 {
5203 @names = ($name);
5204 }
5206 my $r = 0;
5207 foreach $name (@names)
5208 {
5209 my $lang = $languages{$name};
5210 foreach my $ext (@{$lang->extensions})
5211 {
5212 $r += $extension_seen{$ext}
5213 if defined $extension_seen{$ext};
5214 }
5215 }
5217 return $r
5218 }
5220 # Called to ask whether source files have been seen . If HEADERS is 1,
5221 # headers can be included.
5222 sub saw_sources_p
5223 {
5224 my ($headers) = @_;
5226 # count all the sources
5227 my $count = 0;
5228 foreach my $val (values %extension_seen)
5229 {
5230 $count += $val;
5231 }
5233 if (!$headers)
5234 {
5235 $count -= count_files_for_language ('header');
5236 }
5238 return $count > 0;
5239 }
5242 # register_language (%ATTRIBUTE)
5243 # ------------------------------
5244 # Register a single language.
5245 # Each %ATTRIBUTE is of the form ATTRIBUTE => VALUE.
5246 sub register_language (%)
5247 {
5248 my (%option) = @_;
5250 # Set the defaults.
5251 $option{'ansi'} = 0
5252 unless defined $option{'ansi'};
5253 $option{'autodep'} = 'no'
5254 unless defined $option{'autodep'};
5255 $option{'linker'} = ''
5256 unless defined $option{'linker'};
5257 $option{'flags'} = []
5258 unless defined $option{'flags'};
5259 $option{'output_extensions'} = sub { return ( '.$(OBJEXT)', '.lo' ) }
5260 unless defined $option{'output_extensions'};
5262 my $lang = new Language (%option);
5264 # Fill indexes.
5265 $extension_map{$_} = $lang->name foreach @{$lang->extensions};
5266 $languages{$lang->name} = $lang;
5268 # Update the pattern of known extensions.
5269 accept_extensions (@{$lang->extensions});
5271 # Upate the $suffix_rule map.
5272 foreach my $suffix (@{$lang->extensions})
5273 {
5274 foreach my $dest (&{$lang->output_extensions} ($suffix))
5275 {
5276 register_suffix_rule (INTERNAL, $suffix, $dest);
5277 }
5278 }
5279 }
5281 # derive_suffix ($EXT, $OBJ)
5282 # --------------------------
5283 # This function is used to find a path from a user-specified suffix $EXT
5284 # to $OBJ or to some other suffix we recognize internally, e.g. `cc'.
5285 sub derive_suffix ($$)
5286 {
5287 my ($source_ext, $obj) = @_;
5289 while (! $extension_map{$source_ext}
5290 && $source_ext ne $obj
5291 && exists $suffix_rules->{$source_ext}
5292 && exists $suffix_rules->{$source_ext}{$obj})
5293 {
5294 $source_ext = $suffix_rules->{$source_ext}{$obj}[0];
5295 }
5297 return $source_ext;
5298 }
5301 ################################################################
5303 # Pretty-print something and append to output_rules.
5304 sub pretty_print_rule
5305 {
5306 $output_rules .= &makefile_wrap (@_);
5307 }
5310 ################################################################
5313 ## -------------------------------- ##
5314 ## Handling the conditional stack. ##
5315 ## -------------------------------- ##
5318 # $STRING
5319 # make_conditional_string ($NEGATE, $COND)
5320 # ----------------------------------------
5321 sub make_conditional_string ($$)
5322 {
5323 my ($negate, $cond) = @_;
5324 $cond = "${cond}_TRUE"
5325 unless $cond =~ /^TRUE|FALSE$/;
5326 $cond = Automake::Condition::conditional_negate ($cond)
5327 if $negate;
5328 return $cond;
5329 }
5332 # $COND
5333 # cond_stack_if ($NEGATE, $COND, $WHERE)
5334 # --------------------------------------
5335 sub cond_stack_if ($$$)
5336 {
5337 my ($negate, $cond, $where) = @_;
5339 error $where, "$cond does not appear in AM_CONDITIONAL"
5340 if ! $configure_cond{$cond} && $cond !~ /^TRUE|FALSE$/;
5342 push (@cond_stack, make_conditional_string ($negate, $cond));
5344 return new Automake::Condition (@cond_stack);
5345 }
5348 # $COND
5349 # cond_stack_else ($NEGATE, $COND, $WHERE)
5350 # ----------------------------------------
5351 sub cond_stack_else ($$$)
5352 {
5353 my ($negate, $cond, $where) = @_;
5355 if (! @cond_stack)
5356 {
5357 error $where, "else without if";
5358 return FALSE;
5359 }
5361 $cond_stack[$#cond_stack] =
5362 Automake::Condition::conditional_negate ($cond_stack[$#cond_stack]);
5364 # If $COND is given, check against it.
5365 if (defined $cond)
5366 {
5367 $cond = make_conditional_string ($negate, $cond);
5369 error ($where, "else reminder ($negate$cond) incompatible with "
5370 . "current conditional: $cond_stack[$#cond_stack]")
5371 if $cond_stack[$#cond_stack] ne $cond;
5372 }
5374 return new Automake::Condition (@cond_stack);
5375 }
5378 # $COND
5379 # cond_stack_endif ($NEGATE, $COND, $WHERE)
5380 # -----------------------------------------
5381 sub cond_stack_endif ($$$)
5382 {
5383 my ($negate, $cond, $where) = @_;
5384 my $old_cond;
5386 if (! @cond_stack)
5387 {
5388 error $where, "endif without if";
5389 return TRUE;
5390 }
5392 # If $COND is given, check against it.
5393 if (defined $cond)
5394 {
5395 $cond = make_conditional_string ($negate, $cond);
5397 error ($where, "endif reminder ($negate$cond) incompatible with "
5398 . "current conditional: $cond_stack[$#cond_stack]")
5399 if $cond_stack[$#cond_stack] ne $cond;
5400 }
5402 pop @cond_stack;
5404 return new Automake::Condition (@cond_stack);
5405 }
5411 ## ------------------------ ##
5412 ## Handling the variables. ##
5413 ## ------------------------ ##
5416 # &define_pretty_variable ($VAR, $COND, $WHERE, @VALUE)
5417 # -----------------------------------------------------
5418 # Like define_variable, but the value is a list, and the variable may
5419 # be defined conditionally. The second argument is the Condition
5420 # under which the value should be defined; this should be the empty
5421 # string to define the variable unconditionally. The third argument
5422 # is a list holding the values to use for the variable. The value is
5423 # pretty printed in the output file.
5424 sub define_pretty_variable ($$$@)
5425 {
5426 my ($var, $cond, $where, @value) = @_;
5428 if (! vardef ($var, $cond))
5429 {
5430 Automake::Variable::define ($var, VAR_AUTOMAKE, '', $cond, "@value",
5431 '', $where, VAR_PRETTY);
5432 rvar ($var)->rdef ($cond)->set_seen;
5433 }
5434 }
5437 # define_variable ($VAR, $VALUE, $WHERE)
5438 # --------------------------------------
5439 # Define a new user variable VAR to VALUE, but only if not already defined.
5440 sub define_variable ($$$)
5441 {
5442 my ($var, $value, $where) = @_;
5443 define_pretty_variable ($var, TRUE, $where, $value);
5444 }
5447 # define_files_variable ($VAR, \@BASENAME, $EXTENSION, $WHERE)
5448 # -----------------------------------------------------------
5449 # Define the $VAR which content is the list of file names composed of
5450 # a @BASENAME and the $EXTENSION.
5451 sub define_files_variable ($\@$$)
5452 {
5453 my ($var, $basename, $extension, $where) = @_;
5454 define_variable ($var,
5455 join (' ', map { "$_.$extension" } @$basename),
5456 $where);
5457 }
5460 # Like define_variable, but define a variable to be the configure
5461 # substitution by the same name.
5462 sub define_configure_variable ($)
5463 {
5464 my ($var) = @_;
5466 my $pretty = VAR_ASIS;
5467 my $owner = VAR_CONFIGURE;
5469 # Do not output the ANSI2KNR configure variable -- we AC_SUBST
5470 # it in protos.m4, but later redefine it elsewhere. This is
5471 # pretty hacky. We also don't output AMDEPBACKSLASH: it might
5472 # be subst'd by `\', which certainly would not be appreciated by
5473 # Make.
5474 if ($var eq 'ANSI2KNR' || $var eq 'AMDEPBACKSLASH')
5475 {
5476 $pretty = VAR_SILENT;
5477 $owner = VAR_AUTOMAKE;
5478 }
5480 Automake::Variable::define ($var, $owner, '', TRUE, subst $var,
5481 '', $configure_vars{$var}, $pretty);
5482 }
5485 # define_compiler_variable ($LANG)
5486 # --------------------------------
5487 # Define a compiler variable. We also handle defining the `LT'
5488 # version of the command when using libtool.
5489 sub define_compiler_variable ($)
5490 {
5491 my ($lang) = @_;
5493 my ($var, $value) = ($lang->compiler, $lang->compile);
5494 my $libtool_tag = '';
5495 $libtool_tag = '--tag=' . $lang->libtool_tag . ' '
5496 if $lang->libtool_tag && exists $libtool_tags{$lang->libtool_tag};
5497 &define_variable ($var, $value, INTERNAL);
5498 &define_variable ("LT$var",
5499 "\$(LIBTOOL) --mode=compile $libtool_tag$value",
5500 INTERNAL)
5501 if var ('LIBTOOL');
5502 }
5505 # define_linker_variable ($LANG)
5506 # ------------------------------
5507 # Define linker variables.
5508 sub define_linker_variable ($)
5509 {
5510 my ($lang) = @_;
5512 my ($var, $value) = ($lang->lder, $lang->ld);
5513 my $libtool_tag = '';
5514 $libtool_tag = '--tag=' . $lang->libtool_tag . ' '
5515 if $lang->libtool_tag && exists $libtool_tags{$lang->libtool_tag};
5516 # CCLD = $(CC).
5517 &define_variable ($lang->lder, $lang->ld, INTERNAL);
5518 # CCLINK = $(CCLD) blah blah...
5519 &define_variable ($lang->linker,
5520 ((var ('LIBTOOL') ?
5521 '$(LIBTOOL) --mode=link ' . $libtool_tag : '')
5522 . $lang->link),
5523 INTERNAL);
5524 }
5526 ################################################################
5528 # &check_trailing_slash ($WHERE, $LINE)
5529 # --------------------------------------
5530 # Return 1 iff $LINE ends with a slash.
5531 # Might modify $LINE.
5532 sub check_trailing_slash ($\$)
5533 {
5534 my ($where, $line) = @_;
5536 # Ignore `##' lines.
5537 return 0 if $$line =~ /$IGNORE_PATTERN/o;
5539 # Catch and fix a common error.
5540 msg "syntax", $where, "whitespace following trailing backslash"
5541 if $$line =~ s/\\\s+\n$/\\\n/;
5543 return $$line =~ /\\$/;
5544 }
5547 # &read_am_file ($AMFILE, $WHERE)
5548 # -------------------------------
5549 # Read Makefile.am and set up %contents. Simultaneously copy lines
5550 # from Makefile.am into $output_trailer, or define variables as
5551 # appropriate. NOTE we put rules in the trailer section. We want
5552 # user rules to come after our generated stuff.
5553 sub read_am_file ($$)
5554 {
5555 my ($amfile, $where) = @_;
5557 my $am_file = new Automake::XFile ("< $amfile");
5558 verb "reading $amfile";
5560 # Keep track of the youngest output dependency.
5561 my $mtime = mtime $amfile;
5562 $output_deps_greatest_timestamp = $mtime
5563 if $mtime > $output_deps_greatest_timestamp;
5565 my $spacing = '';
5566 my $comment = '';
5567 my $blank = 0;
5568 my $saw_bk = 0;
5570 use constant IN_VAR_DEF => 0;
5571 use constant IN_RULE_DEF => 1;
5572 use constant IN_COMMENT => 2;
5573 my $prev_state = IN_RULE_DEF;
5575 while ($_ = $am_file->getline)
5576 {
5577 $where->set ("$amfile:$.");
5578 if (/$IGNORE_PATTERN/o)
5579 {
5580 # Merely delete comments beginning with two hashes.
5581 }
5582 elsif (/$WHITE_PATTERN/o)
5583 {
5584 error $where, "blank line following trailing backslash"
5585 if $saw_bk;
5586 # Stick a single white line before the incoming macro or rule.
5587 $spacing = "\n";
5588 $blank = 1;
5589 # Flush all comments seen so far.
5590 if ($comment ne '')
5591 {
5592 $output_vars .= $comment;
5593 $comment = '';
5594 }
5595 }
5596 elsif (/$COMMENT_PATTERN/o)
5597 {
5598 # Stick comments before the incoming macro or rule. Make
5599 # sure a blank line precedes the first block of comments.
5600 $spacing = "\n" unless $blank;
5601 $blank = 1;
5602 $comment .= $spacing . $_;
5603 $spacing = '';
5604 $prev_state = IN_COMMENT;
5605 }
5606 else
5607 {
5608 last;
5609 }
5610 $saw_bk = check_trailing_slash ($where, $_);
5611 }
5613 # We save the conditional stack on entry, and then check to make
5614 # sure it is the same on exit. This lets us conditionally include
5615 # other files.
5616 my @saved_cond_stack = @cond_stack;
5617 my $cond = new Automake::Condition (@cond_stack);
5619 my $last_var_name = '';
5620 my $last_var_type = '';
5621 my $last_var_value = '';
5622 my $last_where;
5623 # FIXME: shouldn't use $_ in this loop; it is too big.
5624 while ($_)
5625 {
5626 $where->set ("$amfile:$.");
5628 # Make sure the line is \n-terminated.
5629 chomp;
5630 $_ .= "\n";
5632 # Don't look at MAINTAINER_MODE_TRUE here. That shouldn't be
5633 # used by users. @MAINT@ is an anachronism now.
5634 $_ =~ s/\@MAINT\@//g
5635 unless $seen_maint_mode;
5637 my $new_saw_bk = check_trailing_slash ($where, $_);
5639 if (/$IGNORE_PATTERN/o)
5640 {
5641 # Merely delete comments beginning with two hashes.
5642 }
5643 elsif (/$WHITE_PATTERN/o)
5644 {
5645 # Stick a single white line before the incoming macro or rule.
5646 $spacing = "\n";
5647 error $where, "blank line following trailing backslash"
5648 if $saw_bk;
5649 }
5650 elsif (/$COMMENT_PATTERN/o)
5651 {
5652 # Stick comments before the incoming macro or rule.
5653 $comment .= $spacing . $_;
5654 $spacing = '';
5655 error $where, "comment following trailing backslash"
5656 if $saw_bk && $comment eq '';
5657 $prev_state = IN_COMMENT;
5658 }
5659 elsif ($saw_bk)
5660 {
5661 if ($prev_state == IN_RULE_DEF)
5662 {
5663 my $cond = new Automake::Condition @cond_stack;
5664 $output_trailer .= $cond->subst_string;
5665 $output_trailer .= $_;
5666 }
5667 elsif ($prev_state == IN_COMMENT)
5668 {
5669 # If the line doesn't start with a `#', add it.
5670 # We do this because a continued comment like
5671 # # A = foo \
5672 # bar \
5673 # baz
5674 # is not portable. BSD make doesn't honor
5675 # escaped newlines in comments.
5676 s/^#?/#/;
5677 $comment .= $spacing . $_;
5678 }
5679 else # $prev_state == IN_VAR_DEF
5680 {
5681 $last_var_value .= ' '
5682 unless $last_var_value =~ /\s$/;
5683 $last_var_value .= $_;
5685 if (!/\\$/)
5686 {
5687 Automake::Variable::define ($last_var_name, VAR_MAKEFILE,
5688 $last_var_type, $cond,
5689 $last_var_value, $comment,
5690 $last_where, VAR_ASIS)
5691 if $cond != FALSE;
5692 $comment = $spacing = '';
5693 }
5694 }
5695 }
5697 elsif (/$IF_PATTERN/o)
5698 {
5699 $cond = cond_stack_if ($1, $2, $where);
5700 }
5701 elsif (/$ELSE_PATTERN/o)
5702 {
5703 $cond = cond_stack_else ($1, $2, $where);
5704 }
5705 elsif (/$ENDIF_PATTERN/o)
5706 {
5707 $cond = cond_stack_endif ($1, $2, $where);
5708 }
5710 elsif (/$RULE_PATTERN/o)
5711 {
5712 # Found a rule.
5713 $prev_state = IN_RULE_DEF;
5715 # For now we have to output all definitions of user rules
5716 # and can't diagnose duplicates (see the comment in
5717 # rule_define). So we go on and ignore the return value.
5718 Automake::Rule::define ($1, $amfile, RULE_USER, $cond, $where);
5720 check_variable_expansions ($_, $where);
5722 $output_trailer .= $comment . $spacing;
5723 my $cond = new Automake::Condition @cond_stack;
5724 $output_trailer .= $cond->subst_string;
5725 $output_trailer .= $_;
5726 $comment = $spacing = '';
5727 }
5728 elsif (/$ASSIGNMENT_PATTERN/o)
5729 {
5730 # Found a macro definition.
5731 $prev_state = IN_VAR_DEF;
5732 $last_var_name = $1;
5733 $last_var_type = $2;
5734 $last_var_value = $3;
5735 $last_where = $where->clone;
5736 if ($3 ne '' && substr ($3, -1) eq "\\")
5737 {
5738 # We preserve the `\' because otherwise the long lines
5739 # that are generated will be truncated by broken
5740 # `sed's.
5741 $last_var_value = $3 . "\n";
5742 }
5744 if (!/\\$/)
5745 {
5746 Automake::Variable::define ($last_var_name, VAR_MAKEFILE,
5747 $last_var_type, $cond,
5748 $last_var_value, $comment,
5749 $last_where, VAR_ASIS)
5750 if $cond != FALSE;
5751 $comment = $spacing = '';
5752 }
5753 }
5754 elsif (/$INCLUDE_PATTERN/o)
5755 {
5756 my $path = $1;
5758 if ($path =~ s/^\$\(top_srcdir\)\///)
5759 {
5760 push (@include_stack, "\$\(top_srcdir\)/$path");
5761 # Distribute any included file.
5763 # Always use the $(top_srcdir) prefix in DIST_COMMON,
5764 # otherwise OSF make will implicitly copy the included
5765 # file in the build tree during `make distdir' to satisfy
5766 # the dependency.
5767 # (subdircond2.test and subdircond3.test will fail.)
5768 push_dist_common ("\$\(top_srcdir\)/$path");
5769 }
5770 else
5771 {
5772 $path =~ s/\$\(srcdir\)\///;
5773 push (@include_stack, "\$\(srcdir\)/$path");
5774 # Always use the $(srcdir) prefix in DIST_COMMON,
5775 # otherwise OSF make will implicitly copy the included
5776 # file in the build tree during `make distdir' to satisfy
5777 # the dependency.
5778 # (subdircond2.test and subdircond3.test will fail.)
5779 push_dist_common ("\$\(srcdir\)/$path");
5780 $path = $relative_dir . "/" . $path if $relative_dir ne '.';
5781 }
5782 $where->push_context ("`$path' included from here");
5783 &read_am_file ($path, $where);
5784 $where->pop_context;
5785 }
5786 else
5787 {
5788 # This isn't an error; it is probably a continued rule.
5789 # In fact, this is what we assume.
5790 $prev_state = IN_RULE_DEF;
5791 check_variable_expansions ($_, $where);
5792 $output_trailer .= $comment . $spacing;
5793 my $cond = new Automake::Condition @cond_stack;
5794 $output_trailer .= $cond->subst_string;
5795 $output_trailer .= $_;
5796 $comment = $spacing = '';
5797 error $where, "`#' comment at start of rule is unportable"
5798 if $_ =~ /^\t\s*\#/;
5799 }
5801 $saw_bk = $new_saw_bk;
5802 $_ = $am_file->getline;
5803 }
5805 $output_trailer .= $comment;
5807 error ($where, "trailing backslash on last line")
5808 if $saw_bk;
5810 error ($where, (@cond_stack ? "unterminated conditionals: @cond_stack"
5811 : "too many conditionals closed in include file"))
5812 if "@saved_cond_stack" ne "@cond_stack";
5813 }
5816 # define_standard_variables ()
5817 # ----------------------------
5818 # A helper for read_main_am_file which initializes configure variables
5819 # and variables from header-vars.am.
5820 sub define_standard_variables
5821 {
5822 my $saved_output_vars = $output_vars;
5823 my ($comments, undef, $rules) =
5824 file_contents_internal (1, "$libdir/am/header-vars.am",
5825 new Automake::Location);
5827 foreach my $var (sort keys %configure_vars)
5828 {
5829 &define_configure_variable ($var);
5830 }
5832 $output_vars .= $comments . $rules;
5833 }
5835 # Read main am file.
5836 sub read_main_am_file
5837 {
5838 my ($amfile) = @_;
5840 # This supports the strange variable tricks we are about to play.
5841 prog_error (macros_dump () . "variable defined before read_main_am_file")
5842 if (scalar (variables) > 0);
5844 # Generate copyright header for generated Makefile.in.
5845 # We do discard the output of predefined variables, handled below.
5846 $output_vars = ("# $in_file_name generated by automake "
5847 . $VERSION . " from $am_file_name.\n");
5848 $output_vars .= '# ' . subst ('configure_input') . "\n";
5849 $output_vars .= $gen_copyright;
5851 # We want to predefine as many variables as possible. This lets
5852 # the user set them with `+=' in Makefile.am.
5853 &define_standard_variables;
5855 # Read user file, which might override some of our values.
5856 &read_am_file ($amfile, new Automake::Location);
5857 }
5861 ################################################################
5863 # $FLATTENED
5864 # &flatten ($STRING)
5865 # ------------------
5866 # Flatten the $STRING and return the result.
5867 sub flatten
5868 {
5869 $_ = shift;
5871 s/\\\n//somg;
5872 s/\s+/ /g;
5873 s/^ //;
5874 s/ $//;
5876 return $_;
5877 }
5880 # @PARAGRAPHS
5881 # &make_paragraphs ($MAKEFILE, [%TRANSFORM])
5882 # ------------------------------------------
5883 # Load a $MAKEFILE, apply the %TRANSFORM, and return it as a list of
5884 # paragraphs.
5885 sub make_paragraphs ($%)
5886 {
5887 my ($file, %transform) = @_;
5889 # Complete %transform with global options and make it a Perl $command.
5890 # Note that %transform goes last, so it overrides global options.
5891 my $command =
5892 "s/$IGNORE_PATTERN//gm;"
5893 . transform ('CYGNUS' => !! option 'cygnus',
5894 'MAINTAINER-MODE'
5895 => $seen_maint_mode ? subst ('MAINTAINER_MODE_TRUE') : '',
5897 'BZIP2' => !! option 'dist-bzip2',
5898 'COMPRESS' => !! option 'dist-tarZ',
5899 'GZIP' => ! option 'no-dist-gzip',
5900 'SHAR' => !! option 'dist-shar',
5901 'ZIP' => !! option 'dist-zip',
5903 'INSTALL-INFO' => ! option 'no-installinfo',
5904 'INSTALL-MAN' => ! option 'no-installman',
5905 'CK-NEWS' => !! option 'check-news',
5907 'SUBDIRS' => !! var ('SUBDIRS'),
5908 'TOPDIR' => backname ($relative_dir),
5909 'TOPDIR_P' => $relative_dir eq '.',
5911 'BUILD' => $seen_canonical == AC_CANONICAL_SYSTEM,
5912 'HOST' => $seen_canonical,
5913 'TARGET' => $seen_canonical == AC_CANONICAL_SYSTEM,
5915 'LIBTOOL' => !! var ('LIBTOOL'),
5916 'NONLIBTOOL' => 1,
5917 'FIRST' => ! $transformed_files{$file},
5918 %transform)
5919 # We don't need more than two consecutive new-lines.
5920 . 's/\n{3,}/\n\n/g';
5922 $transformed_files{$file} = 1;
5924 # Swallow the file and apply the COMMAND.
5925 my $fc_file = new Automake::XFile "< $file";
5926 # Looks stupid?
5927 verb "reading $file";
5928 my $saved_dollar_slash = $/;
5929 undef $/;
5930 $_ = $fc_file->getline;
5931 $/ = $saved_dollar_slash;
5932 eval $command;
5933 $fc_file->close;
5934 my $content = $_;
5936 # Split at unescaped new lines.
5937 my @lines = split (/(?<!\\)\n/, $content);
5938 my @res;
5940 while (defined ($_ = shift @lines))
5941 {
5942 my $paragraph = "$_";
5943 # If we are a rule, eat as long as we start with a tab.
5944 if (/$RULE_PATTERN/smo)
5945 {
5946 while (defined ($_ = shift @lines) && $_ =~ /^\t/)
5947 {
5948 $paragraph .= "\n$_";
5949 }
5950 unshift (@lines, $_);
5951 }
5953 # If we are a comments, eat as much comments as you can.
5954 elsif (/$COMMENT_PATTERN/smo)
5955 {
5956 while (defined ($_ = shift @lines)
5957 && $_ =~ /$COMMENT_PATTERN/smo)
5958 {
5959 $paragraph .= "\n$_";
5960 }
5961 unshift (@lines, $_);
5962 }
5964 push @res, $paragraph;
5965 $paragraph = '';
5966 }
5968 return @res;
5969 }
5973 # ($COMMENT, $VARIABLES, $RULES)
5974 # &file_contents_internal ($IS_AM, $FILE, $WHERE, [%TRANSFORM])
5975 # -------------------------------------------------------------
5976 # Return contents of a file from $libdir/am, automatically skipping
5977 # macros or rules which are already known. $IS_AM iff the caller is
5978 # reading an Automake file (as opposed to the user's Makefile.am).
5979 sub file_contents_internal ($$$%)
5980 {
5981 my ($is_am, $file, $where, %transform) = @_;
5983 $where->set ($file);
5985 my $result_vars = '';
5986 my $result_rules = '';
5987 my $comment = '';
5988 my $spacing = '';
5990 # The following flags are used to track rules spanning across
5991 # multiple paragraphs.
5992 my $is_rule = 0; # 1 if we are processing a rule.
5993 my $discard_rule = 0; # 1 if the current rule should not be output.
5995 # We save the conditional stack on entry, and then check to make
5996 # sure it is the same on exit. This lets us conditionally include
5997 # other files.
5998 my @saved_cond_stack = @cond_stack;
5999 my $cond = new Automake::Condition (@cond_stack);
6001 foreach (make_paragraphs ($file, %transform))
6002 {
6003 # FIXME: no line number available.
6004 $where->set ($file);
6006 # Sanity checks.
6007 error $where, "blank line following trailing backslash:\n$_"
6008 if /\\$/;
6009 error $where, "comment following trailing backslash:\n$_"
6010 if /\\#/;
6012 if (/^$/)
6013 {
6014 $is_rule = 0;
6015 # Stick empty line before the incoming macro or rule.
6016 $spacing = "\n";
6017 }
6018 elsif (/$COMMENT_PATTERN/mso)
6019 {
6020 $is_rule = 0;
6021 # Stick comments before the incoming macro or rule.
6022 $comment = "$_\n";
6023 }
6025 # Handle inclusion of other files.
6026 elsif (/$INCLUDE_PATTERN/o)
6027 {
6028 if ($cond != FALSE)
6029 {
6030 my $file = ($is_am ? "$libdir/am/" : '') . $1;
6031 $where->push_context ("`$file' included from here");
6032 # N-ary `.=' fails.
6033 my ($com, $vars, $rules)
6034 = file_contents_internal ($is_am, $file, $where, %transform);
6035 $where->pop_context;
6036 $comment .= $com;
6037 $result_vars .= $vars;
6038 $result_rules .= $rules;
6039 }
6040 }
6042 # Handling the conditionals.
6043 elsif (/$IF_PATTERN/o)
6044 {
6045 $cond = cond_stack_if ($1, $2, $file);
6046 }
6047 elsif (/$ELSE_PATTERN/o)
6048 {
6049 $cond = cond_stack_else ($1, $2, $file);
6050 }
6051 elsif (/$ENDIF_PATTERN/o)
6052 {
6053 $cond = cond_stack_endif ($1, $2, $file);
6054 }
6056 # Handling rules.
6057 elsif (/$RULE_PATTERN/mso)
6058 {
6059 $is_rule = 1;
6060 $discard_rule = 0;
6061 # Separate relationship from optional actions: the first
6062 # `new-line tab" not preceded by backslash (continuation
6063 # line).
6064 my $paragraph = $_;
6065 /^(.*?)(?:(?<!\\)\n(\t.*))?$/s;
6066 my ($relationship, $actions) = ($1, $2 || '');
6068 # Separate targets from dependencies: the first colon.
6069 $relationship =~ /^([^:]+\S+) *: *(.*)$/som;
6070 my ($targets, $dependencies) = ($1, $2);
6071 # Remove the escaped new lines.
6072 # I don't know why, but I have to use a tmp $flat_deps.
6073 my $flat_deps = &flatten ($dependencies);
6074 my @deps = split (' ', $flat_deps);
6076 foreach (split (' ' , $targets))
6077 {
6078 # FIXME: 1. We are not robust to people defining several targets
6079 # at once, only some of them being in %dependencies. The
6080 # actions from the targets in %dependencies are usually generated
6081 # from the content of %actions, but if some targets in $targets
6082 # are not in %dependencies the ELSE branch will output
6083 # a rule for all $targets (i.e. the targets which are both
6084 # in %dependencies and $targets will have two rules).
6086 # FIXME: 2. The logic here is not able to output a
6087 # multi-paragraph rule several time (e.g. for each condition
6088 # it is defined for) because it only knows the first paragraph.
6090 # FIXME: 3. We are not robust to people defining a subset
6091 # of a previously defined "multiple-target" rule. E.g.
6092 # `foo:' after `foo bar:'.
6094 # Output only if not in FALSE.
6095 if (defined $dependencies{$_} && $cond != FALSE)
6096 {
6097 &depend ($_, @deps);
6098 if ($actions{$_})
6099 {
6100 $actions{$_} .= "\n$actions" if $actions;
6101 }
6102 else
6103 {
6104 $actions{$_} = $actions;
6105 }
6106 }
6107 else
6108 {
6109 # Free-lance dependency. Output the rule for all the
6110 # targets instead of one by one.
6111 my @undefined_conds =
6112 Automake::Rule::define ($targets, $file,
6113 $is_am ? RULE_AUTOMAKE : RULE_USER,
6114 $cond, $where);
6115 for my $undefined_cond (@undefined_conds)
6116 {
6117 my $condparagraph = $paragraph;
6118 $condparagraph =~ s/^/$undefined_cond->subst_string/gme;
6119 $result_rules .= "$spacing$comment$condparagraph\n";
6120 }
6121 if (scalar @undefined_conds == 0)
6122 {
6123 # Remember to discard next paragraphs
6124 # if they belong to this rule.
6125 # (but see also FIXME: #2 above.)
6126 $discard_rule = 1;
6127 }
6128 $comment = $spacing = '';
6129 last;
6130 }
6131 }
6132 }
6134 elsif (/$ASSIGNMENT_PATTERN/mso)
6135 {
6136 my ($var, $type, $val) = ($1, $2, $3);
6137 error $where, "variable `$var' with trailing backslash"
6138 if /\\$/;
6140 $is_rule = 0;
6142 Automake::Variable::define ($var,
6143 $is_am ? VAR_AUTOMAKE : VAR_MAKEFILE,
6144 $type, $cond, $val, $comment, $where,
6145 VAR_ASIS)
6146 if $cond != FALSE;
6148 $comment = $spacing = '';
6149 }
6150 else
6151 {
6152 # This isn't an error; it is probably some tokens which
6153 # configure is supposed to replace, such as `@SET-MAKE@',
6154 # or some part of a rule cut by an if/endif.
6155 if (! $cond->false && ! ($is_rule && $discard_rule))
6156 {
6157 s/^/$cond->subst_string/gme;
6158 $result_rules .= "$spacing$comment$_\n";
6159 }
6160 $comment = $spacing = '';
6161 }
6162 }
6164 error ($where, @cond_stack ?
6165 "unterminated conditionals: @cond_stack" :
6166 "too many conditionals closed in include file")
6167 if "@saved_cond_stack" ne "@cond_stack";
6169 return ($comment, $result_vars, $result_rules);
6170 }
6173 # $CONTENTS
6174 # &file_contents ($BASENAME, $WHERE, [%TRANSFORM])
6175 # ------------------------------------------------
6176 # Return contents of a file from $libdir/am, automatically skipping
6177 # macros or rules which are already known.
6178 sub file_contents ($$%)
6179 {
6180 my ($basename, $where, %transform) = @_;
6181 my ($comments, $variables, $rules) =
6182 file_contents_internal (1, "$libdir/am/$basename.am", $where,
6183 %transform);
6184 return "$comments$variables$rules";
6185 }
6188 # $REGEXP
6189 # &transform (%PAIRS)
6190 # -------------------
6191 # For each ($TOKEN, $VAL) in %PAIRS produce a replacement expression
6192 # suitable for file_contents which:
6193 # - replaces %$TOKEN% with $VAL,
6194 # - enables/disables ?$TOKEN? and ?!$TOKEN?,
6195 # - replaces %?$TOKEN% with TRUE or FALSE.
6196 sub transform (%)
6197 {
6198 my (%pairs) = @_;
6199 my $result = '';
6201 while (my ($token, $val) = each %pairs)
6202 {
6203 $result .= "s/\Q%$token%\E/\Q$val\E/gm;";
6204 if ($val)
6205 {
6206 $result .= "s/\Q?$token?\E//gm;s/^.*\Q?!$token?\E.*\\n//gm;";
6207 $result .= "s/\Q%?$token%\E/TRUE/gm;";
6208 }
6209 else
6210 {
6211 $result .= "s/\Q?!$token?\E//gm;s/^.*\Q?$token?\E.*\\n//gm;";
6212 $result .= "s/\Q%?$token%\E/FALSE/gm;";
6213 }
6214 }
6216 return $result;
6217 }
6220 # &append_exeext ($MACRO)
6221 # -----------------------
6222 # Macro is an Automake magic macro which primary is PROGRAMS, e.g.
6223 # bin_PROGRAMS. Make sure these programs have $(EXEEXT) appended.
6224 sub append_exeext ($)
6225 {
6226 my ($macro) = @_;
6228 prog_error "append_exeext ($macro)"
6229 unless $macro =~ /_PROGRAMS$/;
6231 transform_variable_recursively
6232 ($macro, $macro, 'am__EXEEXT', 0, INTERNAL,
6233 sub {
6234 my ($subvar, $val, $cond, $full_cond) = @_;
6235 # Append $(EXEEXT) unless the user did it already, or it's a
6236 # @substitution@.
6237 $val .= '$(EXEEXT)' unless $val =~ /(?:\$\(EXEEXT\)$|^[@]\w+[@]$)/;
6238 return $val;
6239 });
6240 }
6243 # @PREFIX
6244 # &am_primary_prefixes ($PRIMARY, $CAN_DIST, @PREFIXES)
6245 # -----------------------------------------------------
6246 # Find all variable prefixes that are used for install directories. A
6247 # prefix `zar' qualifies iff:
6248 #
6249 # * `zardir' is a variable.
6250 # * `zar_PRIMARY' is a variable.
6251 #
6252 # As a side effect, it looks for misspellings. It is an error to have
6253 # a variable ending in a "reserved" suffix whose prefix is unknown, e.g.
6254 # "bin_PROGRAMS". However, unusual prefixes are allowed if a variable
6255 # of the same name (with "dir" appended) exists. For instance, if the
6256 # variable "zardir" is defined, then "zar_PROGRAMS" becomes valid.
6257 # This is to provide a little extra flexibility in those cases which
6258 # need it.
6259 sub am_primary_prefixes ($$@)
6260 {
6261 my ($primary, $can_dist, @prefixes) = @_;
6263 local $_;
6264 my %valid = map { $_ => 0 } @prefixes;
6265 $valid{'EXTRA'} = 0;
6266 foreach my $var (variables)
6267 {
6268 # Automake is allowed to define variables that look like primaries
6269 # but which aren't. E.g. INSTALL_sh_DATA.
6270 # Autoconf can also define variables like INSTALL_DATA, so
6271 # ignore all configure variables (at least those which are not
6272 # redefined in Makefile.am).
6273 # FIXME: We should make sure that these variables are not
6274 # conditionally defined (or else adjust the condition below).
6275 my $def = $var->def (TRUE);
6276 next if $def && $def->owner != VAR_MAKEFILE;
6278 my $varname = $var->name;
6280 if ($varname =~ /^(nobase_)?(dist_|nodist_)?(.*)_$primary$/)
6281 {
6282 my ($base, $dist, $X) = ($1 || '', $2 || '', $3 || '');
6283 if ($dist ne '' && ! $can_dist)
6284 {
6285 err_var ($var,
6286 "invalid variable `$varname': `dist' is forbidden");
6287 }
6288 # Standard directories must be explicitly allowed.
6289 elsif (! defined $valid{$X} && exists $standard_prefix{$X})
6290 {
6291 err_var ($var,
6292 "`${X}dir' is not a legitimate directory " .
6293 "for `$primary'");
6294 }
6295 # A not explicitly valid directory is allowed if Xdir is defined.
6296 elsif (! defined $valid{$X} &&
6297 $var->requires_variables ("`$varname' is used", "${X}dir"))
6298 {
6299 # Nothing to do. Any error message has been output
6300 # by $var->requires_variables.
6301 }
6302 else
6303 {
6304 # Ensure all extended prefixes are actually used.
6305 $valid{"$base$dist$X"} = 1;
6306 }
6307 }
6308 }
6310 # Return only those which are actually defined.
6311 return sort grep { var ($_ . '_' . $primary) } keys %valid;
6312 }
6315 # Handle `where_HOW' variable magic. Does all lookups, generates
6316 # install code, and possibly generates code to define the primary
6317 # variable. The first argument is the name of the .am file to munge,
6318 # the second argument is the primary variable (e.g. HEADERS), and all
6319 # subsequent arguments are possible installation locations.
6320 #
6321 # Returns list of [$location, $value] pairs, where
6322 # $value's are the values in all where_HOW variable, and $location
6323 # there associated location (the place here their parent variables were
6324 # defined).
6325 #
6326 # FIXME: this should be rewritten to be cleaner. It should be broken
6327 # up into multiple functions.
6328 #
6329 # Usage is: am_install_var (OPTION..., file, HOW, where...)
6330 sub am_install_var
6331 {
6332 my (@args) = @_;
6334 my $do_require = 1;
6335 my $can_dist = 0;
6336 my $default_dist = 0;
6337 while (@args)
6338 {
6339 if ($args[0] eq '-noextra')
6340 {
6341 $do_require = 0;
6342 }
6343 elsif ($args[0] eq '-candist')
6344 {
6345 $can_dist = 1;
6346 }
6347 elsif ($args[0] eq '-defaultdist')
6348 {
6349 $default_dist = 1;
6350 $can_dist = 1;
6351 }
6352 elsif ($args[0] !~ /^-/)
6353 {
6354 last;
6355 }
6356 shift (@args);
6357 }
6359 my ($file, $primary, @prefix) = @args;
6361 # Now that configure substitutions are allowed in where_HOW
6362 # variables, it is an error to actually define the primary. We
6363 # allow `JAVA', as it is customarily used to mean the Java
6364 # interpreter. This is but one of several Java hacks. Similarly,
6365 # `PYTHON' is customarily used to mean the Python interpreter.
6366 reject_var $primary, "`$primary' is an anachronism"
6367 unless $primary eq 'JAVA' || $primary eq 'PYTHON';
6369 # Get the prefixes which are valid and actually used.
6370 @prefix = am_primary_prefixes ($primary, $can_dist, @prefix);
6372 # If a primary includes a configure substitution, then the EXTRA_
6373 # form is required. Otherwise we can't properly do our job.
6374 my $require_extra;
6376 my @used = ();
6377 my @result = ();
6379 foreach my $X (@prefix)
6380 {
6381 my $nodir_name = $X;
6382 my $one_name = $X . '_' . $primary;
6383 my $one_var = var $one_name;
6385 my $strip_subdir = 1;
6386 # If subdir prefix should be preserved, do so.
6387 if ($nodir_name =~ /^nobase_/)
6388 {
6389 $strip_subdir = 0;
6390 $nodir_name =~ s/^nobase_//;
6391 }
6393 # If files should be distributed, do so.
6394 my $dist_p = 0;
6395 if ($can_dist)
6396 {
6397 $dist_p = (($default_dist && $nodir_name !~ /^nodist_/)
6398 || (! $default_dist && $nodir_name =~ /^dist_/));
6399 $nodir_name =~ s/^(dist|nodist)_//;
6400 }
6403 # Use the location of the currently processed variable.
6404 # We are not processing a particular condition, so pick the first
6405 # available.
6406 my $tmpcond = $one_var->conditions->one_cond;
6407 my $where = $one_var->rdef ($tmpcond)->location->clone;
6409 # Append actual contents of where_PRIMARY variable to
6410 # @result, skipping @substitutions@.
6411 foreach my $locvals ($one_var->value_as_list_recursive (location => 1))
6412 {
6413 my ($loc, $value) = @$locvals;
6414 # Skip configure substitutions.
6415 if ($value =~ /^\@.*\@$/)
6416 {
6417 if ($nodir_name eq 'EXTRA')
6418 {
6419 error ($where,
6420 "`$one_name' contains configure substitution, "
6421 . "but shouldn't");
6422 }
6423 # Check here to make sure variables defined in
6424 # configure.ac do not imply that EXTRA_PRIMARY
6425 # must be defined.
6426 elsif (! defined $configure_vars{$one_name})
6427 {
6428 $require_extra = $one_name
6429 if $do_require;
6430 }
6431 }
6432 else
6433 {
6434 push (@result, $locvals);
6435 }
6436 }
6437 # A blatant hack: we rewrite each _PROGRAMS primary to include
6438 # EXEEXT.
6439 append_exeext ($one_name)
6440 if $primary eq 'PROGRAMS';
6441 # "EXTRA" shouldn't be used when generating clean targets,
6442 # all, or install targets. We used to warn if EXTRA_FOO was
6443 # defined uselessly, but this was annoying.
6444 next
6445 if $nodir_name eq 'EXTRA';
6447 if ($nodir_name eq 'check')
6448 {
6449 push (@check, '$(' . $one_name . ')');
6450 }
6451 else
6452 {
6453 push (@used, '$(' . $one_name . ')');
6454 }
6456 # Is this to be installed?
6457 my $install_p = $nodir_name ne 'noinst' && $nodir_name ne 'check';
6459 # If so, with install-exec? (or install-data?).
6460 my $exec_p = ($nodir_name =~ /$EXEC_DIR_PATTERN/o);
6462 my $check_options_p = $install_p && !! option 'std-options';
6464 # Use the location of the currently processed variable as context.
6465 $where->push_context ("while processing `$one_name'");
6467 # The variable containing all file to distribute.
6468 my $distvar = "\$($one_name)";
6469 $distvar = shadow_unconditionally ($one_name, $where)
6470 if ($dist_p && $one_var->has_conditional_contents);
6472 # Singular form of $PRIMARY.
6473 (my $one_primary = $primary) =~ s/S$//;
6474 $output_rules .= &file_contents ($file, $where,
6475 PRIMARY => $primary,
6476 ONE_PRIMARY => $one_primary,
6477 DIR => $X,
6478 NDIR => $nodir_name,
6479 BASE => $strip_subdir,
6481 EXEC => $exec_p,
6482 INSTALL => $install_p,
6483 DIST => $dist_p,
6484 DISTVAR => $distvar,
6485 'CK-OPTS' => $check_options_p);
6486 }
6488 # The JAVA variable is used as the name of the Java interpreter.
6489 # The PYTHON variable is used as the name of the Python interpreter.
6490 if (@used && $primary ne 'JAVA' && $primary ne 'PYTHON')
6491 {
6492 # Define it.
6493 define_pretty_variable ($primary, TRUE, INTERNAL, @used);
6494 $output_vars .= "\n";
6495 }
6497 err_var ($require_extra,
6498 "`$require_extra' contains configure substitution,\n"
6499 . "but `EXTRA_$primary' not defined")
6500 if ($require_extra && ! var ('EXTRA_' . $primary));
6502 # Push here because PRIMARY might be configure time determined.
6503 push (@all, '$(' . $primary . ')')
6504 if @used && $primary ne 'JAVA' && $primary ne 'PYTHON';
6506 # Make the result unique. This lets the user use conditionals in
6507 # a natural way, but still lets us program lazily -- we don't have
6508 # to worry about handling a particular object more than once.
6509 # We will keep only one location per object.
6510 my %result = ();
6511 for my $pair (@result)
6512 {
6513 my ($loc, $val) = @$pair;
6514 $result{$val} = $loc;
6515 }
6516 my @l = sort keys %result;
6517 return map { [$result{$_}->clone, $_] } @l;
6518 }
6521 ################################################################
6523 # Each key in this hash is the name of a directory holding a
6524 # Makefile.in. These variables are local to `is_make_dir'.
6525 my %make_dirs = ();
6526 my $make_dirs_set = 0;
6528 sub is_make_dir
6529 {
6530 my ($dir) = @_;
6531 if (! $make_dirs_set)
6532 {
6533 foreach my $iter (@configure_input_files)
6534 {
6535 $make_dirs{dirname ($iter)} = 1;
6536 }
6537 # We also want to notice Makefile.in's.
6538 foreach my $iter (@other_input_files)
6539 {
6540 if ($iter =~ /Makefile\.in$/)
6541 {
6542 $make_dirs{dirname ($iter)} = 1;
6543 }
6544 }
6545 $make_dirs_set = 1;
6546 }
6547 return defined $make_dirs{$dir};
6548 }
6550 ################################################################
6552 # This variable is local to the "require file" set of functions.
6553 my @require_file_paths = ();
6556 # &maybe_push_required_file ($DIR, $FILE, $FULLFILE)
6557 # --------------------------------------------------
6558 # See if we want to push this file onto dist_common. This function
6559 # encodes the rules for deciding when to do so.
6560 sub maybe_push_required_file
6561 {
6562 my ($dir, $file, $fullfile) = @_;
6564 if ($dir eq $relative_dir)
6565 {
6566 push_dist_common ($file);
6567 return 1;
6568 }
6569 elsif ($relative_dir eq '.' && ! &is_make_dir ($dir))
6570 {
6571 # If we are doing the topmost directory, and the file is in a
6572 # subdir which does not have a Makefile, then we distribute it
6573 # here.
6575 # If a required file is above the source tree, it is important
6576 # to prefix it with `$(srcdir)' so that no VPATH search is
6577 # performed. Otherwise problems occur with Make implementations
6578 # that rewrite and simplify rules whose dependencies are found in a
6579 # VPATH location. Here is an example with OSF1/Tru64 Make.
6580 #
6581 # % cat Makefile
6582 # VPATH = sub
6583 # distdir: ../a
6584 # echo ../a
6585 # % ls
6586 # Makefile a
6587 # % make
6588 # echo a
6589 # a
6590 #
6591 # Dependency `../a' was found in `sub/../a', but this make
6592 # implementation simplified it as `a'. (Note that the sub/
6593 # directory does not even exist.)
6594 #
6595 # This kind of VPATH rewriting seems hard to cancel. The
6596 # distdir.am hack against VPATH rewriting works only when no
6597 # simplification is done, i.e., for dependencies which are in
6598 # subdirectories, not in enclosing directories. Hence, in
6599 # the latter case we use a full path to make sure no VPATH
6600 # search occurs.
6601 $fullfile = '$(srcdir)/' . $fullfile
6602 if $dir =~ m,^\.\.(?:$|/),;
6604 push_dist_common ($fullfile);
6605 return 1;
6606 }
6607 return 0;
6608 }
6611 # &require_file_internal ($WHERE, $MYSTRICT, @FILES)
6612 # --------------------------------------------------
6613 # Verify that the file must exist in the current directory.
6614 # $MYSTRICT is the strictness level at which this file becomes required.
6615 #
6616 # Must set require_file_paths before calling this function.
6617 # require_file_paths is set to hold a single directory (the one in
6618 # which the first file was found) before return.
6619 sub require_file_internal ($$@)
6620 {
6621 my ($where, $mystrict, @files) = @_;
6623 foreach my $file (@files)
6624 {
6625 my $fullfile;
6626 my $errdir;
6627 my $errfile;
6628 my $save_dir;
6630 my $found_it = 0;
6631 my $dangling_sym = 0;
6632 foreach my $dir (@require_file_paths)
6633 {
6634 $fullfile = $dir . "/" . $file;
6635 $errdir = $dir unless $errdir;
6637 # Use different name for "error filename". Otherwise on
6638 # an error the bad file will be reported as e.g.
6639 # `../../install-sh' when using the default
6640 # config_aux_path.
6641 $errfile = $errdir . '/' . $file;
6643 if (-l $fullfile && ! -f $fullfile)
6644 {
6645 $dangling_sym = 1;
6646 last;
6647 }
6648 elsif (-f $fullfile)
6649 {
6650 $found_it = 1;
6651 maybe_push_required_file ($dir, $file, $fullfile);
6652 $save_dir = $dir;
6653 last;
6654 }
6655 }
6657 # `--force-missing' only has an effect if `--add-missing' is
6658 # specified.
6659 if ($found_it && (! $add_missing || ! $force_missing))
6660 {
6661 # Prune the path list.
6662 @require_file_paths = $save_dir;
6663 }
6664 else
6665 {
6666 # If we've already looked for it, we're done. You might
6667 # wonder why we don't do this before searching for the
6668 # file. If we do that, then something like
6669 # AC_OUTPUT(subdir/foo foo) will fail to put foo.in into
6670 # DIST_COMMON.
6671 if (! $found_it)
6672 {
6673 next if defined $require_file_found{$fullfile};
6674 $require_file_found{$fullfile} = 1;
6675 }
6677 if ($strictness >= $mystrict)
6678 {
6679 if ($dangling_sym && $add_missing)
6680 {
6681 unlink ($fullfile);
6682 }
6684 my $trailer = '';
6685 my $suppress = 0;
6687 # Only install missing files according to our desired
6688 # strictness level.
6689 my $message = "required file `$errfile' not found";
6690 if ($add_missing)
6691 {
6692 if (-f ("$libdir/$file"))
6693 {
6694 $suppress = 1;
6696 # Install the missing file. Symlink if we
6697 # can, copy if we must. Note: delete the file
6698 # first, in case it is a dangling symlink.
6699 $message = "installing `$errfile'";
6700 # Windows Perl will hang if we try to delete a
6701 # file that doesn't exist.
6702 unlink ($errfile) if -f $errfile;
6703 if ($symlink_exists && ! $copy_missing)
6704 {
6705 if (! symlink ("$libdir/$file", $errfile))
6706 {
6707 $suppress = 0;
6708 $trailer = "; error while making link: $!";
6709 }
6710 }
6711 elsif (system ('cp', "$libdir/$file", $errfile))
6712 {
6713 $suppress = 0;
6714 $trailer = "\n error while copying";
6715 }
6716 }
6718 if (! maybe_push_required_file (dirname ($errfile),
6719 $file, $errfile))
6720 {
6721 if (! $found_it)
6722 {
6723 # We have added the file but could not push it
6724 # into DIST_COMMON (probably because this is
6725 # an auxiliary file and we are not processing
6726 # the top level Makefile). This is unfortunate,
6727 # since it means we are using a file which is not
6728 # distributed!
6730 # Get Automake to be run again: on the second
6731 # run the file will be found, and pushed into
6732 # the toplevel DIST_COMMON automatically.
6733 $automake_needs_to_reprocess_all_files = 1;
6734 }
6735 }
6737 # Prune the path list.
6738 @require_file_paths = &dirname ($errfile);
6739 }
6741 # If --force-missing was specified, and we have
6742 # actually found the file, then do nothing.
6743 next
6744 if $found_it && $force_missing;
6746 # If we couldn' install the file, but it is a target in
6747 # the Makefile, don't print anything. This allows files
6748 # like README, AUTHORS, or THANKS to be generated.
6749 next
6750 if !$suppress && rule $file;
6752 msg ($suppress ? 'note' : 'error', $where, "$message$trailer");
6753 }
6754 }
6755 }
6756 }
6758 # &require_file ($WHERE, $MYSTRICT, @FILES)
6759 # -----------------------------------------
6760 sub require_file ($$@)
6761 {
6762 my ($where, $mystrict, @files) = @_;
6763 @require_file_paths = $relative_dir;
6764 require_file_internal ($where, $mystrict, @files);
6765 }
6767 # &require_file_with_macro ($COND, $MACRO, $MYSTRICT, @FILES)
6768 # -----------------------------------------------------------
6769 sub require_file_with_macro ($$$@)
6770 {
6771 my ($cond, $macro, $mystrict, @files) = @_;
6772 $macro = rvar ($macro) unless ref $macro;
6773 require_file ($macro->rdef ($cond)->location, $mystrict, @files);
6774 }
6777 # &require_conf_file ($WHERE, $MYSTRICT, @FILES)
6778 # ----------------------------------------------
6779 # Looks in configuration path, as specified by AC_CONFIG_AUX_DIR.
6780 sub require_conf_file ($$@)
6781 {
6782 my ($where, $mystrict, @files) = @_;
6783 @require_file_paths = @config_aux_path;
6784 require_file_internal ($where, $mystrict, @files);
6785 my $dir = $require_file_paths[0];
6786 @config_aux_path = @require_file_paths;
6787 # Avoid unsightly '/.'s.
6788 $config_aux_dir = '$(top_srcdir)' . ($dir eq '.' ? "" : "/$dir");
6789 }
6792 # &require_conf_file_with_macro ($COND, $MACRO, $MYSTRICT, @FILES)
6793 # ----------------------------------------------------------------
6794 sub require_conf_file_with_macro ($$$@)
6795 {
6796 my ($cond, $macro, $mystrict, @files) = @_;
6797 require_conf_file (rvar ($macro)->rdef ($cond)->location,
6798 $mystrict, @files);
6799 }
6801 ################################################################
6803 # &require_build_directory ($DIRECTORY)
6804 # ------------------------------------
6805 # Emit rules to create $DIRECTORY if needed, and return
6806 # the file that any target requiring this directory should be made
6807 # dependent upon.
6808 sub require_build_directory ($)
6809 {
6810 my $directory = shift;
6811 my $dirstamp = "$directory/\$(am__dirstamp)";
6813 # Don't emit the rule twice.
6814 if (! defined $directory_map{$directory})
6815 {
6816 $directory_map{$directory} = 1;
6818 # Set a variable for the dirstamp basename.
6819 define_pretty_variable ('am__dirstamp', TRUE, INTERNAL,
6820 '$(am__leading_dot)dirstamp');
6822 # Directory must be removed by `make distclean'.
6823 $clean_files{$dirstamp} = DIST_CLEAN;
6825 $output_rules .= ("$dirstamp:\n"
6826 . "\t\@\$(mkdir_p) $directory\n"
6827 . "\t\@: > $dirstamp\n");
6828 }
6830 return $dirstamp;
6831 }
6833 # &require_build_directory_maybe ($FILE)
6834 # --------------------------------------
6835 # If $FILE lies in a subdirectory, emit a rule to create this
6836 # directory and return the file that $FILE should be made
6837 # dependent upon. Otherwise, just return the empty string.
6838 sub require_build_directory_maybe ($)
6839 {
6840 my $file = shift;
6841 my $directory = dirname ($file);
6843 if ($directory ne '.')
6844 {
6845 return require_build_directory ($directory);
6846 }
6847 else
6848 {
6849 return '';
6850 }
6851 }
6853 ################################################################
6855 # Push a list of files onto dist_common.
6856 sub push_dist_common
6857 {
6858 prog_error "push_dist_common run after handle_dist"
6859 if $handle_dist_run;
6860 Automake::Variable::define ('DIST_COMMON', VAR_AUTOMAKE, '+', TRUE, "@_",
6861 '', INTERNAL, VAR_PRETTY);
6862 }
6865 ################################################################
6867 # generate_makefile ($MAKEFILE_AM, $MAKEFILE_IN)
6868 # ----------------------------------------------
6869 # Generate a Makefile.in given the name of the corresponding Makefile and
6870 # the name of the file output by config.status.
6871 sub generate_makefile ($$)
6872 {
6873 my ($makefile_am, $makefile_in) = @_;
6875 # Reset all the Makefile.am related variables.
6876 initialize_per_input;
6878 # AUTOMAKE_OPTIONS can contains -W flags to disable or enable
6879 # warnings for this file. So hold any warning issued before
6880 # we have processed AUTOMAKE_OPTIONS.
6881 buffer_messages ('warning');
6883 # Name of input file ("Makefile.am") and output file
6884 # ("Makefile.in"). These have no directory components.
6885 $am_file_name = basename ($makefile_am);
6886 $in_file_name = basename ($makefile_in);
6888 # $OUTPUT is encoded. If it contains a ":" then the first element
6889 # is the real output file, and all remaining elements are input
6890 # files. We don't scan or otherwise deal with these input files,
6891 # other than to mark them as dependencies. See
6892 # &scan_autoconf_files for details.
6893 my ($makefile, @inputs) = split (/:/, $output_files{$makefile_in});
6895 $relative_dir = dirname ($makefile);
6896 $am_relative_dir = dirname ($makefile_am);
6898 read_main_am_file ($makefile_am);
6899 if (handle_options)
6900 {
6901 # Process buffered warnings.
6902 flush_messages;
6903 # Fatal error. Just return, so we can continue with next file.
6904 return;
6905 }
6906 # Process buffered warnings.
6907 flush_messages;
6909 # There are a few install-related variables that you should not define.
6910 foreach my $var ('PRE_INSTALL', 'POST_INSTALL', 'NORMAL_INSTALL')
6911 {
6912 my $v = var $var;
6913 if ($v)
6914 {
6915 my $def = $v->def (TRUE);
6916 prog_error "$var not defined in condition TRUE"
6917 unless $def;
6918 reject_var $var, "`$var' should not be defined"
6919 if $def->owner != VAR_AUTOMAKE;
6920 }
6921 }
6923 # Catch some obsolete variables.
6924 msg_var ('obsolete', 'INCLUDES',
6925 "`INCLUDES' is the old name for `AM_CPPFLAGS' (or `*_CPPFLAGS')")
6926 if var ('INCLUDES');
6928 # At the toplevel directory, we might need config.guess, config.sub
6929 # or libtool scripts (ltconfig and ltmain.sh).
6930 if ($relative_dir eq '.')
6931 {
6932 # AC_CANONICAL_HOST and AC_CANONICAL_SYSTEM need config.guess and
6933 # config.sub.
6934 require_conf_file ($canonical_location, FOREIGN,
6935 'config.guess', 'config.sub')
6936 if $seen_canonical;
6937 }
6939 # Must do this after reading .am file.
6940 define_variable ('subdir', $relative_dir, INTERNAL);
6942 # If DIST_SUBDIRS is defined, make sure SUBDIRS is, so that
6943 # recursive rules are enabled.
6944 define_pretty_variable ('SUBDIRS', TRUE, INTERNAL, '')
6945 if var 'DIST_SUBDIRS' && ! var 'SUBDIRS';
6947 # Check first, because we might modify some state.
6948 check_cygnus;
6949 check_gnu_standards;
6950 check_gnits_standards;
6952 handle_configure ($makefile_am, $makefile_in, $makefile, @inputs);
6953 handle_gettext;
6954 handle_libraries;
6955 handle_ltlibraries;
6956 handle_programs;
6957 handle_scripts;
6959 # These must be run after all the sources are scanned. They
6960 # use variables defined by &handle_libraries, &handle_ltlibraries,
6961 # or &handle_programs.
6962 handle_compile;
6963 handle_languages;
6964 handle_libtool;
6966 # Variables used by distdir.am and tags.am.
6967 define_pretty_variable ('SOURCES', TRUE, INTERNAL, @sources);
6968 if (! option 'no-dist')
6969 {
6970 define_pretty_variable ('DIST_SOURCES', TRUE, INTERNAL, @dist_sources);
6971 }
6973 handle_multilib;
6974 handle_texinfo;
6975 handle_emacs_lisp;
6976 handle_python;
6977 handle_java;
6978 handle_man_pages;
6979 handle_data;
6980 handle_headers;
6981 handle_subdirs;
6982 handle_tags;
6983 handle_minor_options;
6984 handle_tests;
6986 # This must come after most other rules.
6987 handle_dist;
6989 handle_footer;
6990 do_check_merge_target;
6991 handle_all ($makefile);
6993 # FIXME: Gross!
6994 if (var ('lib_LTLIBRARIES') && var ('bin_PROGRAMS'))
6995 {
6996 $output_rules .= "install-binPROGRAMS: install-libLTLIBRARIES\n\n";
6997 }
6999 handle_install;
7000 handle_clean ($makefile);
7001 handle_factored_dependencies;
7003 # Comes last, because all the above procedures may have
7004 # defined or overridden variables.
7005 $output_vars .= output_variables;
7007 check_typos;
7009 if (! -d ($output_directory . '/' . $am_relative_dir))
7010 {
7011 mkdir ($output_directory . '/' . $am_relative_dir, 0755);
7012 }
7014 my ($out_file) = $output_directory . '/' . $makefile_in;
7016 # We make sure that `all:' is the first target.
7017 my $output =
7018 "$output_vars$output_all$output_header$output_rules$output_trailer";
7020 # Decide whether we must update the output file or not.
7021 # We have to update in the following situations.
7022 # * $force_generation is set.
7023 # * any of the output dependencies is younger than the output
7024 # * the contents of the output is different (this can happen
7025 # if the project has been populated with a file listed in
7026 # @common_files since the last run).
7027 # Output's dependencies are split in two sets:
7028 # * dependencies which are also configure dependencies
7029 # These do not change between each Makefile.am
7030 # * other dependencies, specific to the Makefile.am being processed
7031 # (such as the Makefile.am itself, or any Makefile fragment
7032 # it includes).
7033 my $timestamp = mtime $out_file;
7034 if (! $force_generation
7035 && $configure_deps_greatest_timestamp < $timestamp
7036 && $output_deps_greatest_timestamp < $timestamp
7037 && $output eq contents ($out_file))
7038 {
7039 verb "$out_file unchanged";
7040 # No need to update.
7041 return;
7042 }
7044 if (-e $out_file)
7045 {
7046 unlink ($out_file)
7047 or fatal "cannot remove $out_file: $!\n";
7048 }
7050 my $gm_file = new Automake::XFile "> $out_file";
7051 verb "creating $out_file";
7052 print $gm_file $output;
7053 }
7055 ################################################################
7060 ################################################################
7062 # Print usage information.
7063 sub usage ()
7064 {
7065 print "Usage: $0 [OPTION] ... [Makefile]...
7067 Generate Makefile.in for configure from Makefile.am.
7069 Operation modes:
7070 --help print this help, then exit
7071 --version print version number, then exit
7072 -v, --verbose verbosely list files processed
7073 --no-force only update Makefile.in's that are out of date
7074 -W, --warnings=CATEGORY report the warnings falling in CATEGORY
7076 Dependency tracking:
7077 -i, --ignore-deps disable dependency tracking code
7078 --include-deps enable dependency tracking code
7080 Flavors:
7081 --cygnus assume program is part of Cygnus-style tree
7082 --foreign set strictness to foreign
7083 --gnits set strictness to gnits
7084 --gnu set strictness to gnu
7086 Library files:
7087 -a, --add-missing add missing standard files to package
7088 --libdir=DIR directory storing library files
7089 -c, --copy with -a, copy missing files (default is symlink)
7090 -f, --force-missing force update of standard files
7092 ";
7093 Automake::ChannelDefs::usage;
7095 my ($last, @lcomm);
7096 $last = '';
7097 foreach my $iter (sort ((@common_files, @common_sometimes)))
7098 {
7099 push (@lcomm, $iter) unless $iter eq $last;
7100 $last = $iter;
7101 }
7103 my @four;
7104 print "\nFiles which are automatically distributed, if found:\n";
7105 format USAGE_FORMAT =
7106 @<<<<<<<<<<<<<<<< @<<<<<<<<<<<<<<<< @<<<<<<<<<<<<<<<< @<<<<<<<<<<<<<<<<
7107 $four[0], $four[1], $four[2], $four[3]
7108 .
7109 $~ = "USAGE_FORMAT";
7111 my $cols = 4;
7112 my $rows = int(@lcomm / $cols);
7113 my $rest = @lcomm % $cols;
7115 if ($rest)
7116 {
7117 $rows++;
7118 }
7119 else
7120 {
7121 $rest = $cols;
7122 }
7124 for (my $y = 0; $y < $rows; $y++)
7125 {
7126 @four = ("", "", "", "");
7127 for (my $x = 0; $x < $cols; $x++)
7128 {
7129 last if $y + 1 == $rows && $x == $rest;
7131 my $idx = (($x > $rest)
7132 ? ($rows * $rest + ($rows - 1) * ($x - $rest))
7133 : ($rows * $x));
7135 $idx += $y;
7136 $four[$x] = $lcomm[$idx];
7137 }
7138 write;
7139 }
7141 print "\nReport bugs to <bug-automake\@gnu.org>.\n";
7143 # --help always returns 0 per GNU standards.
7144 exit 0;
7145 }
7148 # &version ()
7149 # -----------
7150 # Print version information
7151 sub version ()
7152 {
7153 print <<EOF;
7154 automake (GNU $PACKAGE) $VERSION
7155 Written by Tom Tromey <tromey\@redhat.com>.
7157 Copyright 2004 Free Software Foundation, Inc.
7158 This is free software; see the source for copying conditions. There is NO
7159 warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
7160 EOF
7161 # --version always returns 0 per GNU standards.
7162 exit 0;
7163 }
7165 ################################################################
7167 # Parse command line.
7168 sub parse_arguments ()
7169 {
7170 # Start off as gnu.
7171 set_strictness ('gnu');
7173 my $cli_where = new Automake::Location;
7174 my %cli_options =
7175 (
7176 'libdir:s' => \$libdir,
7177 'gnu' => sub { set_strictness ('gnu'); },
7178 'gnits' => sub { set_strictness ('gnits'); },
7179 'cygnus' => sub { set_global_option ('cygnus', $cli_where); },
7180 'foreign' => sub { set_strictness ('foreign'); },
7181 'include-deps' => sub { unset_global_option ('no-dependencies'); },
7182 'i|ignore-deps' => sub { set_global_option ('no-dependencies',
7183 $cli_where); },
7184 'no-force' => sub { $force_generation = 0; },
7185 'f|force-missing' => \$force_missing,
7186 'o|output-dir:s' => \$output_directory,
7187 'a|add-missing' => \$add_missing,
7188 'c|copy' => \$copy_missing,
7189 'v|verbose' => sub { setup_channel 'verb', silent => 0; },
7190 'W|warnings:s' => \&parse_warnings,
7191 # These long options (--Werror and --Wno-error) for backward
7192 # compatibility. Use -Werror and -Wno-error today.
7193 'Werror' => sub { parse_warnings 'W', 'error'; },
7194 'Wno-error' => sub { parse_warnings 'W', 'no-error'; },
7195 );
7196 use Getopt::Long;
7197 Getopt::Long::config ("bundling", "pass_through");
7199 # See if --version or --help is used. We want to process these before
7200 # anything else because the GNU Coding Standards require us to
7201 # `exit 0' after processing these options, and we can't guarantee this
7202 # if we treat other options first. (Handling other options first
7203 # could produce error diagnostics, and in this condition it is
7204 # confusing if Automake does `exit 0'.)
7205 my %cli_options_1st_pass =
7206 (
7207 'version' => \&version,
7208 'help' => \&usage,
7209 # Recognize all other options (and their arguments) but do nothing.
7210 map { $_ => sub {} } (keys %cli_options)
7211 );
7212 my @ARGV_backup = @ARGV;
7213 Getopt::Long::GetOptions %cli_options_1st_pass
7214 or exit 1;
7215 @ARGV = @ARGV_backup;
7217 # Now *really* process the options. This time we know
7218 # that --help and --version are not present.
7219 Getopt::Long::GetOptions %cli_options
7220 or exit 1;
7222 if (defined $output_directory)
7223 {
7224 msg 'obsolete', "`--output-dir' is deprecated\n";
7225 }
7226 else
7227 {
7228 # In the next release we'll remove this entirely.
7229 $output_directory = '.';
7230 }
7232 foreach my $arg (@ARGV)
7233 {
7234 if ($arg =~ /^-./)
7235 {
7236 fatal ("unrecognized option `$arg'\n"
7237 . "Try `$0 --help' for more information.");
7238 }
7240 # Handle $local:$input syntax.
7241 my ($local, @rest) = split (/:/, $arg);
7242 @rest = ("$local.in",) unless @rest;
7243 my $input = locate_am @rest;
7244 if ($input)
7245 {
7246 push @input_files, $input;
7247 $output_files{$input} = join (':', ($local, @rest));
7248 }
7249 else
7250 {
7251 error "no Automake input file found in `$arg'";
7252 }
7253 }
7254 }
7256 ################################################################
7258 # Parse the WARNINGS environment variable.
7259 parse_WARNINGS;
7261 # Parse command line.
7262 parse_arguments;
7264 $configure_ac = require_configure_ac;
7266 # Do configure.ac scan only once.
7267 scan_autoconf_files;
7269 fatal "no `Makefile.am' found or specified\n"
7270 if ! @input_files;
7272 my $automake_has_run = 0;
7274 do
7275 {
7276 if ($automake_has_run)
7277 {
7278 verb 'processing Makefiles another time to fix them up.';
7279 prog_error 'running more than two times should never be needed.'
7280 if $automake_has_run >= 2;
7281 }
7282 $automake_needs_to_reprocess_all_files = 0;
7284 # Now do all the work on each file.
7285 foreach my $file (@input_files)
7286 {
7287 ($am_file = $file) =~ s/\.in$//;
7288 if (! -f ($am_file . '.am'))
7289 {
7290 error "`$am_file.am' does not exist";
7291 }
7292 else
7293 {
7294 # Any warning setting now local to this Makefile.am.
7295 dup_channel_setup;
7297 generate_makefile ($am_file . '.am', $file);
7299 # Back out any warning setting.
7300 drop_channel_setup;
7301 }
7302 }
7303 ++$automake_has_run;
7304 }
7305 while ($automake_needs_to_reprocess_all_files);
7307 exit $exit_code;
7310 ### Setup "GNU" style for perl-mode and cperl-mode.
7311 ## Local Variables:
7312 ## perl-indent-level: 2
7313 ## perl-continued-statement-offset: 2
7314 ## perl-continued-brace-offset: 0
7315 ## perl-brace-offset: 0
7316 ## perl-brace-imaginary-offset: 0
7317 ## perl-label-offset: -2
7318 ## cperl-indent-level: 2
7319 ## cperl-brace-offset: 0
7320 ## cperl-continued-brace-offset: 0
7321 ## cperl-label-offset: -2
7322 ## cperl-extra-newline-before-brace: t
7323 ## cperl-merge-trailing-else: nil
7324 ## cperl-continued-statement-offset: 2
7325 ## End: