| blob | 26e3bd3fae42edfc40b62365df6d39b11373e448 |
1 #!@PERL@ -w
2 # -*- perl -*-
3 # @configure_input@
5 eval 'case $# in 0) exec @PERL@ -S "$0";; *) exec @PERL@ -S "$0" "$@";; esac'
6 if 0;
8 # automake - create Makefile.in from Makefile.am
9 # Copyright (C) 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003
10 # Free Software Foundation, Inc.
12 # This program is free software; you can redistribute it and/or modify
13 # it under the terms of the GNU General Public License as published by
14 # the Free Software Foundation; either version 2, or (at your option)
15 # any later version.
17 # This program is distributed in the hope that it will be useful,
18 # but WITHOUT ANY WARRANTY; without even the implied warranty of
19 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
20 # GNU General Public License for more details.
22 # You should have received a copy of the GNU General Public License
23 # along with this program; if not, write to the Free Software
24 # Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
25 # 02111-1307, USA.
27 # Originally written by David Mackenzie <djm@gnu.ai.mit.edu>.
28 # Perl reimplementation by Tom Tromey <tromey@redhat.com>.
30 package Language;
32 BEGIN
33 {
34 my $perllibdir = $ENV{'perllibdir'} || '@datadir@/@PACKAGE@-@APIVERSION@';
35 unshift @INC, (split ':', $perllibdir);
37 # Override SHELL. This is required on DJGPP so that system() uses
38 # bash, not COMMAND.COM which doesn't quote arguments properly.
39 # Other systems aren't expected to use $SHELL when Automake
40 # runs, but it should be safe to drop the `if DJGPP' guard if
41 # it turns up other systems need the same thing. After all,
42 # if SHELL is used, ./configure's SHELL is always better than
43 # the user's SHELL (which may be something like tcsh).
44 $ENV{'SHELL'} = '@SHELL@' if exists $ENV{'DJGPP'};
45 }
47 use Automake::Struct;
48 struct (# Short name of the language (c, f77...).
49 'name' => "\$",
50 # Nice name of the language (C, Fortran 77...).
51 'Name' => "\$",
53 # List of configure variables which must be defined.
54 'config_vars' => '@',
56 'ansi' => "\$",
57 # `pure' is `1' or `'. A `pure' language is one where, if
58 # all the files in a directory are of that language, then we
59 # do not require the C compiler or any code to call it.
60 'pure' => "\$",
62 'autodep' => "\$",
64 # Name of the compiling variable (COMPILE).
65 'compiler' => "\$",
66 # Content of the compiling variable.
67 'compile' => "\$",
68 # Flag to require compilation without linking (-c).
69 'compile_flag' => "\$",
70 'extensions' => '@',
71 # A subroutine to compute a list of possible extensions of
72 # the product given the input extensions.
73 # (defaults to a subroutine which returns ('.$(OBJEXT)', '.lo'))
74 'output_extensions' => "\$",
75 # A list of flag variables used in 'compile'.
76 # (defaults to [])
77 'flags' => "@",
79 # The file to use when generating rules for this language.
80 # The default is 'depend2'.
81 'rule_file' => "\$",
83 # Name of the linking variable (LINK).
84 'linker' => "\$",
85 # Content of the linking variable.
86 'link' => "\$",
88 # Name of the linker variable (LD).
89 'lder' => "\$",
90 # Content of the linker variable ($(CC)).
91 'ld' => "\$",
93 # Flag to specify the output file (-o).
94 'output_flag' => "\$",
95 '_finish' => "\$",
97 # This is a subroutine which is called whenever we finally
98 # determine the context in which a source file will be
99 # compiled.
100 '_target_hook' => "\$");
103 sub finish ($)
104 {
105 my ($self) = @_;
106 if (defined $self->_finish)
107 {
108 &{$self->_finish} ();
109 }
110 }
112 sub target_hook ($$$$)
113 {
114 my ($self) = @_;
115 if (defined $self->_target_hook)
116 {
117 &{$self->_target_hook} (@_);
118 }
119 }
121 package Automake;
123 use strict;
124 use Automake::Config;
125 use Automake::General;
126 use Automake::XFile;
127 use Automake::Channels;
128 use Automake::ChannelDefs;
129 use Automake::Configure_ac;
130 use Automake::FileUtils;
131 use Automake::Location;
132 use Automake::Condition qw/TRUE FALSE/;
133 use Automake::DisjConditions;
134 use Automake::Options;
135 use Automake::Version;
136 use Automake::Variable;
137 use Automake::VarDef;
138 use Automake::Rule;
139 use Automake::RuleDef;
140 use Automake::Wrap 'makefile_wrap';
141 use File::Basename;
142 use Carp;
144 ## ----------- ##
145 ## Constants. ##
146 ## ----------- ##
148 # Some regular expressions. One reason to put them here is that it
149 # makes indentation work better in Emacs.
151 # Writing singled-quoted-$-terminated regexes is a pain because
152 # perl-mode thinks of $' as the ${'} variable (instead of a $ followed
153 # by a closing quote. Letting perl-mode think the quote is not closed
154 # leads to all sort of misindentations. On the other hand, defining
155 # regexes as double-quoted strings is far less readable. So usually
156 # we will write:
157 #
158 # $REGEX = '^regex_value' . "\$";
160 my $IGNORE_PATTERN = '^\s*##([^#\n].*)?\n';
161 my $WHITE_PATTERN = '^\s*' . "\$";
162 my $COMMENT_PATTERN = '^#';
163 my $TARGET_PATTERN='[$a-zA-Z_.@%][-.a-zA-Z0-9_(){}/$+@%]*';
164 # A rule has three parts: a list of targets, a list of dependencies,
165 # and optionally actions.
166 my $RULE_PATTERN =
167 "^($TARGET_PATTERN(?:(?:\\\\\n|\\s)+$TARGET_PATTERN)*) *:([^=].*|)\$";
169 # Only recognize leading spaces, not leading tabs. If we recognize
170 # leading tabs here then we need to make the reader smarter, because
171 # otherwise it will think rules like `foo=bar; \' are errors.
172 my $ASSIGNMENT_PATTERN = '^ *([^ \t=:+]*)\s*([:+]?)=\s*(.*)' . "\$";
173 # This pattern recognizes a Gnits version id and sets $1 if the
174 # release is an alpha release. We also allow a suffix which can be
175 # used to extend the version number with a "fork" identifier.
176 my $GNITS_VERSION_PATTERN = '\d+\.\d+([a-z]|\.\d+)?(-[A-Za-z0-9]+)?';
178 my $IF_PATTERN = '^if\s+(!?)\s*([A-Za-z][A-Za-z0-9_]*)\s*(?:#.*)?' . "\$";
179 my $ELSE_PATTERN =
180 '^else(?:\s+(!?)\s*([A-Za-z][A-Za-z0-9_]*))?\s*(?:#.*)?' . "\$";
181 my $ENDIF_PATTERN =
182 '^endif(?:\s+(!?)\s*([A-Za-z][A-Za-z0-9_]*))?\s*(?:#.*)?' . "\$";
183 my $PATH_PATTERN = '(\w|[/.-])+';
184 # This will pass through anything not of the prescribed form.
185 my $INCLUDE_PATTERN = ('^include\s+'
186 . '((\$\(top_srcdir\)/' . $PATH_PATTERN . ')'
187 . '|(\$\(srcdir\)/' . $PATH_PATTERN . ')'
188 . '|([^/\$]' . $PATH_PATTERN . '))\s*(#.*)?' . "\$");
190 # Match `-d' as a command-line argument in a string.
191 my $DASH_D_PATTERN = "(^|\\s)-d(\\s|\$)";
192 # Directories installed during 'install-exec' phase.
193 my $EXEC_DIR_PATTERN =
194 '^(?:bin|sbin|libexec|sysconf|localstate|lib|pkglib|.*exec.*)' . "\$";
196 # Values for AC_CANONICAL_*
197 use constant AC_CANONICAL_HOST => 1;
198 use constant AC_CANONICAL_SYSTEM => 2;
200 # Values indicating when something should be cleaned.
201 use constant MOSTLY_CLEAN => 0;
202 use constant CLEAN => 1;
203 use constant DIST_CLEAN => 2;
204 use constant MAINTAINER_CLEAN => 3;
206 # Libtool files.
207 my @libtool_files = qw(ltmain.sh config.guess config.sub);
208 # ltconfig appears here for compatibility with old versions of libtool.
209 my @libtool_sometimes = qw(ltconfig ltcf-c.sh ltcf-cxx.sh ltcf-gcj.sh);
211 # Commonly found files we look for and automatically include in
212 # DISTFILES.
213 my @common_files =
214 (qw(ABOUT-GNU ABOUT-NLS AUTHORS BACKLOG COPYING COPYING.DOC COPYING.LIB
215 COPYING.LESSER ChangeLog INSTALL NEWS README THANKS TODO
216 ansi2knr.1 ansi2knr.c compile config.guess config.rpath config.sub
217 configure configure.ac configure.in depcomp elisp-comp
218 install-sh libversion.in mdate-sh missing mkinstalldirs
219 py-compile texinfo.tex ylwrap),
220 @libtool_files, @libtool_sometimes);
222 # Commonly used files we auto-include, but only sometimes.
223 my @common_sometimes =
224 qw(aclocal.m4 acconfig.h config.h.top config.h.bot stamp-vti);
226 # Standard directories from the GNU Coding Standards, and additional
227 # pkg* directories from Automake. Stored in a hash for fast member check.
228 my %standard_prefix =
229 map { $_ => 1 } (qw(bin data exec include info lib libexec lisp
230 localstate man man1 man2 man3 man4 man5 man6
231 man7 man8 man9 oldinclude pkgdatadir
232 pkgincludedir pkglibdir sbin sharedstate
233 sysconf));
235 # Copyright on generated Makefile.ins.
236 my $gen_copyright = "\
237 # Copyright (C) 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003
238 # Free Software Foundation, Inc.
239 # This Makefile.in is free software; the Free Software Foundation
240 # gives unlimited permission to copy and/or distribute it,
241 # with or without modifications, as long as this notice is preserved.
243 # This program is distributed in the hope that it will be useful,
244 # but WITHOUT ANY WARRANTY, to the extent permitted by law; without
245 # even the implied warranty of MERCHANTABILITY or FITNESS FOR A
246 # PARTICULAR PURPOSE.
247 ";
249 # These constants are returned by lang_*_rewrite functions.
250 # LANG_SUBDIR means that the resulting object file should be in a
251 # subdir if the source file is. In this case the file name cannot
252 # have `..' components.
253 use constant LANG_IGNORE => 0;
254 use constant LANG_PROCESS => 1;
255 use constant LANG_SUBDIR => 2;
257 # These are used when keeping track of whether an object can be built
258 # by two different paths.
259 use constant COMPILE_LIBTOOL => 1;
260 use constant COMPILE_ORDINARY => 2;
262 # We can't always associate a location to a variable or a rule,
263 # when its defined by Automake. We use INTERNAL in this case.
264 use constant INTERNAL => new Automake::Location;
265 \f
267 ## ---------------------------------- ##
268 ## Variables related to the options. ##
269 ## ---------------------------------- ##
271 # TRUE if we should always generate Makefile.in.
272 my $force_generation = 1;
274 # From the Perl manual.
275 my $symlink_exists = (eval 'symlink ("", "");', $@ eq '');
277 # TRUE if missing standard files should be installed.
278 my $add_missing = 0;
280 # TRUE if we should copy missing files; otherwise symlink if possible.
281 my $copy_missing = 0;
283 # TRUE if we should always update files that we know about.
284 my $force_missing = 0;
287 ## ---------------------------------------- ##
288 ## Variables filled during files scanning. ##
289 ## ---------------------------------------- ##
291 # Name of the configure.ac file.
292 my $configure_ac;
294 # Files found by scanning configure.ac for LIBOBJS.
295 my %libsources = ();
297 # Names used in AC_CONFIG_HEADER call.
298 my @config_headers = ();
300 # Names used in AC_CONFIG_LINKS call.
301 my @config_links = ();
303 # Directory where output files go. Actually, output files are
304 # relative to this directory.
305 my $output_directory;
307 # List of Makefile.am's to process, and their corresponding outputs.
308 my @input_files = ();
309 my %output_files = ();
311 # Complete list of Makefile.am's that exist.
312 my @configure_input_files = ();
314 # List of files in AC_CONFIG_FILES/AC_OUTPUT without Makefile.am's,
315 # and their outputs.
316 my @other_input_files = ();
317 # Where each AC_CONFIG_FILES/AC_OUTPUT/AC_CONFIG_LINK/AC_CONFIG_HEADER appears.
318 # The keys are the files created by these macros.
319 my %ac_config_files_location = ();
321 # List of directories to search for configure-required files. This
322 # can be set by AC_CONFIG_AUX_DIR.
323 my @config_aux_path = qw(. .. ../..);
324 my $config_aux_dir = '';
325 my $config_aux_dir_set_in_configure_in = 0;
327 # Whether AM_GNU_GETTEXT has been seen in configure.ac.
328 my $seen_gettext = 0;
329 # Whether AM_GNU_GETTEXT([external]) is used.
330 my $seen_gettext_external = 0;
331 # Where AM_GNU_GETTEXT appears.
332 my $ac_gettext_location;
334 # TRUE if we've seen AC_CANONICAL_(HOST|SYSTEM).
335 my $seen_canonical = 0;
336 my $canonical_location;
338 # Where AM_MAINTAINER_MODE appears.
339 my $seen_maint_mode;
341 # Actual version we've seen.
342 my $package_version = '';
344 # Where version is defined.
345 my $package_version_location;
347 # TRUE if we've seen AC_ENABLE_MULTILIB.
348 my $seen_multilib = 0;
350 # TRUE if we've seen AM_PROG_CC_C_O
351 my $seen_cc_c_o = 0;
353 # Where AM_INIT_AUTOMAKE is called;
354 my $seen_init_automake = 0;
356 # TRUE if we've seen AM_AUTOMAKE_VERSION.
357 my $seen_automake_version = 0;
359 # Hash table of discovered configure substitutions. Keys are names,
360 # values are `FILE:LINE' strings which are used by error message
361 # generation.
362 my %configure_vars = ();
364 # Files included by $configure_ac.
365 my @configure_deps = ();
367 # Greatest timestamp of configure's dependencies.
368 my $configure_deps_greatest_timestamp = 0;
370 # Hash table of AM_CONDITIONAL variables seen in configure.
371 my %configure_cond = ();
373 # This maps extensions onto language names.
374 my %extension_map = ();
376 # List of the DIST_COMMON files we discovered while reading
377 # configure.in
378 my $configure_dist_common = '';
380 # This maps languages names onto objects.
381 my %languages = ();
383 # List of targets we must always output.
384 # FIXME: Complete, and remove falsely required targets.
385 my %required_targets =
386 (
387 'all' => 1,
388 'dvi' => 1,
389 'pdf' => 1,
390 'ps' => 1,
391 'info' => 1,
392 'install-info' => 1,
393 'install' => 1,
394 'install-data' => 1,
395 'install-exec' => 1,
396 'uninstall' => 1,
398 # FIXME: Not required, temporary hacks.
399 # Well, actually they are sort of required: the -recursive
400 # targets will run them anyway...
401 'dvi-am' => 1,
402 'pdf-am' => 1,
403 'ps-am' => 1,
404 'info-am' => 1,
405 'install-data-am' => 1,
406 'install-exec-am' => 1,
407 'installcheck-am' => 1,
408 'uninstall-am' => 1,
410 'install-man' => 1,
411 );
413 # This is set to 1 when Automake needs to be run again.
414 # (For instance, this happens when an auxiliary file such as
415 # depcomp is added after the toplevel Makefile.in -- which
416 # should distribute depcomp -- has been generated.)
417 my $automake_needs_to_reprocess_all_files = 0;
419 # If a file name appears as a key in this hash, then it has already
420 # been checked for. This variable is local to the "require file"
421 # functions.
422 my %require_file_found = ();
424 # The name of the Makefile currently being processed.
425 my $am_file = 'BUG';
426 \f
428 ################################################################
430 ## ------------------------------------------ ##
431 ## Variables reset by &initialize_per_input. ##
432 ## ------------------------------------------ ##
434 # Basename and relative dir of the input file.
435 my $am_file_name;
436 my $am_relative_dir;
438 # Same but wrt Makefile.in.
439 my $in_file_name;
440 my $relative_dir;
442 # Greatest timestamp of the output's dependencies (excluding
443 # configure's dependencies).
444 my $output_deps_greatest_timestamp;
446 # These two variables are used when generating each Makefile.in.
447 # They hold the Makefile.in until it is ready to be printed.
448 my $output_rules;
449 my $output_vars;
450 my $output_trailer;
451 my $output_all;
452 my $output_header;
454 # This is the conditional stack, updated on if/else/endif, and
455 # used to build Condition objects.
456 my @cond_stack;
458 # This holds the set of included files.
459 my @include_stack;
461 # This holds a list of directories which we must create at `dist'
462 # time. This is used in some strange scenarios involving weird
463 # AC_OUTPUT commands.
464 my %dist_dirs;
466 # List of dependencies for the obvious targets.
467 my @all;
468 my @check;
469 my @check_tests;
471 # Keys in this hash table are files to delete. The associated
472 # value tells when this should happen (MOSTLY_CLEAN, DIST_CLEAN, etc.)
473 my %clean_files;
475 # Keys in this hash table are object files or other files in
476 # subdirectories which need to be removed. This only holds files
477 # which are created by compilations. The value in the hash indicates
478 # when the file should be removed.
479 my %compile_clean_files;
481 # Keys in this hash table are directories where we expect to build a
482 # libtool object. We use this information to decide what directories
483 # to delete.
484 my %libtool_clean_directories;
486 # Value of `$(SOURCES)', used by tags.am.
487 my @sources;
488 # Sources which go in the distribution.
489 my @dist_sources;
491 # This hash maps object file names onto their corresponding source
492 # file names. This is used to ensure that each object is created
493 # by a single source file.
494 my %object_map;
496 # This hash maps object file names onto an integer value representing
497 # whether this object has been built via ordinary compilation or
498 # libtool compilation (the COMPILE_* constants).
499 my %object_compilation_map;
502 # This keeps track of the directories for which we've already
503 # created dirstamp code.
504 my %directory_map;
506 # All .P files.
507 my %dep_files;
509 # This is a list of all targets to run during "make dist".
510 my @dist_targets;
512 # Keys in this hash are the basenames of files which must depend on
513 # ansi2knr. Values are either the empty string, or the directory in
514 # which the ANSI source file appears; the directory must have a
515 # trailing `/'.
516 my %de_ansi_files;
518 # This is the name of the redirect `all' target to use.
519 my $all_target;
521 # This keeps track of which extensions we've seen (that we care
522 # about).
523 my %extension_seen;
525 # This is random scratch space for the language finish functions.
526 # Don't randomly overwrite it; examine other uses of keys first.
527 my %language_scratch;
529 # We keep track of which objects need special (per-executable)
530 # handling on a per-language basis.
531 my %lang_specific_files;
533 # This is set when `handle_dist' has finished. Once this happens,
534 # we should no longer push on dist_common.
535 my $handle_dist_run;
537 # Used to store a set of linkers needed to generate the sources currently
538 # under consideration.
539 my %linkers_used;
541 # True if we need `LINK' defined. This is a hack.
542 my $need_link;
544 # Was get_object_extension run?
545 # FIXME: This is a hack. a better switch should be found.
546 my $get_object_extension_was_run;
548 ################################################################
550 # var_SUFFIXES_trigger ($TYPE, $VALUE)
551 # ------------------------------------
552 # This is called by Automake::Variable::define() when SUFFIXES
553 # is defined ($TYPE eq '') or appended ($TYPE eq '+').
554 # The work here needs to be performed as a side-effect of the
555 # macro_define() call because SUFFIXES definitions impact
556 # on $KNOWN_EXTENSIONS_PATTERN which is used used when parsing
557 # the input am file.
558 sub var_SUFFIXES_trigger ($$)
559 {
560 my ($type, $value) = @_;
561 accept_extensions (split (' ', $value));
562 }
563 Automake::Variable::hook ('SUFFIXES', \&var_SUFFIXES_trigger);
565 ################################################################
567 ## --------------------------------- ##
568 ## Forward subroutine declarations. ##
569 ## --------------------------------- ##
570 sub register_language (%);
571 sub file_contents_internal ($$$%);
572 sub define_files_variable ($\@$$);
575 # &initialize_per_input ()
576 # ------------------------
577 # (Re)-Initialize per-Makefile.am variables.
578 sub initialize_per_input ()
579 {
580 reset_local_duplicates ();
582 $am_file_name = '';
583 $am_relative_dir = '';
585 $in_file_name = '';
586 $relative_dir = '';
588 $output_deps_greatest_timestamp = 0;
590 $output_rules = '';
591 $output_vars = '';
592 $output_trailer = '';
593 $output_all = '';
594 $output_header = '';
596 Automake::Options::reset;
597 Automake::Variable::reset;
598 Automake::Rule::reset;
600 @cond_stack = ();
602 @include_stack = ();
604 %dist_dirs = ();
606 @all = ();
607 @check = ();
608 @check_tests = ();
610 %clean_files = ();
612 @sources = ();
613 @dist_sources = ();
615 %object_map = ();
616 %object_compilation_map = ();
618 %directory_map = ();
620 %dep_files = ();
622 @dist_targets = ();
624 %de_ansi_files = ();
626 $all_target = '';
628 %extension_seen = ();
630 %language_scratch = ();
632 %lang_specific_files = ();
634 $handle_dist_run = 0;
636 $need_link = 0;
638 $get_object_extension_was_run = 0;
640 %compile_clean_files = ();
642 # We always include `.'. This isn't strictly correct.
643 %libtool_clean_directories = ('.' => 1);
644 }
647 ################################################################
649 # Initialize our list of languages that are internally supported.
651 # C.
652 register_language ('name' => 'c',
653 'Name' => 'C',
654 'config_vars' => ['CC'],
655 'ansi' => 1,
656 'autodep' => '',
657 'flags' => ['CFLAGS', 'CPPFLAGS'],
658 'compiler' => 'COMPILE',
659 'compile' => '$(CC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS) $(CPPFLAGS) $(AM_CFLAGS) $(CFLAGS)',
660 'lder' => 'CCLD',
661 'ld' => '$(CC)',
662 'linker' => 'LINK',
663 'link' => '$(CCLD) $(AM_CFLAGS) $(CFLAGS) $(AM_LDFLAGS) $(LDFLAGS) -o $@',
664 'compile_flag' => '-c',
665 'extensions' => ['.c'],
666 '_finish' => \&lang_c_finish);
668 # C++.
669 register_language ('name' => 'cxx',
670 'Name' => 'C++',
671 'config_vars' => ['CXX'],
672 'linker' => 'CXXLINK',
673 'link' => '$(CXXLD) $(AM_CXXFLAGS) $(CXXFLAGS) $(AM_LDFLAGS) $(LDFLAGS) -o $@',
674 'autodep' => 'CXX',
675 'flags' => ['CXXFLAGS', 'CPPFLAGS'],
676 'compile' => '$(CXX) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS) $(CPPFLAGS) $(AM_CXXFLAGS) $(CXXFLAGS)',
677 'compiler' => 'CXXCOMPILE',
678 'compile_flag' => '-c',
679 'output_flag' => '-o',
680 'lder' => 'CXXLD',
681 'ld' => '$(CXX)',
682 'pure' => 1,
683 'extensions' => ['.c++', '.cc', '.cpp', '.cxx', '.C']);
685 # Objective C.
686 register_language ('name' => 'objc',
687 'Name' => 'Objective C',
688 'config_vars' => ['OBJC'],
689 'linker' => 'OBJCLINK',,
690 'link' => '$(OBJCLD) $(AM_OBJCFLAGS) $(OBJCFLAGS) $(AM_LDFLAGS) $(LDFLAGS) -o $@',
691 'autodep' => 'OBJC',
692 'flags' => ['OBJCFLAGS', 'CPPFLAGS'],
693 'compile' => '$(OBJC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS) $(CPPFLAGS) $(AM_OBJCFLAGS) $(OBJCFLAGS)',
694 'compiler' => 'OBJCCOMPILE',
695 'compile_flag' => '-c',
696 'output_flag' => '-o',
697 'lder' => 'OBJCLD',
698 'ld' => '$(OBJC)',
699 'pure' => 1,
700 'extensions' => ['.m']);
702 # Headers.
703 register_language ('name' => 'header',
704 'Name' => 'Header',
705 'extensions' => ['.h', '.H', '.hxx', '.h++', '.hh',
706 '.hpp', '.inc'],
707 # No output.
708 'output_extensions' => sub { return () },
709 # Nothing to do.
710 '_finish' => sub { });
712 # Yacc (C & C++).
713 register_language ('name' => 'yacc',
714 'Name' => 'Yacc',
715 'config_vars' => ['YACC'],
716 'flags' => ['YFLAGS'],
717 'compile' => '$(YACC) $(YFLAGS) $(AM_YFLAGS)',
718 'compiler' => 'YACCCOMPILE',
719 'extensions' => ['.y'],
720 'output_extensions' => sub { (my $ext = $_[0]) =~ tr/y/c/;
721 return ($ext,) },
722 'rule_file' => 'yacc',
723 '_finish' => \&lang_yacc_finish,
724 '_target_hook' => \&lang_yacc_target_hook);
725 register_language ('name' => 'yaccxx',
726 'Name' => 'Yacc (C++)',
727 'config_vars' => ['YACC'],
728 'rule_file' => 'yacc',
729 'flags' => ['YFLAGS'],
730 'compiler' => 'YACCCOMPILE',
731 'compile' => '$(YACC) $(YFLAGS) $(AM_YFLAGS)',
732 'extensions' => ['.y++', '.yy', '.yxx', '.ypp'],
733 'output_extensions' => sub { (my $ext = $_[0]) =~ tr/y/c/;
734 return ($ext,) },
735 '_finish' => \&lang_yacc_finish,
736 '_target_hook' => \&lang_yacc_target_hook);
738 # Lex (C & C++).
739 register_language ('name' => 'lex',
740 'Name' => 'Lex',
741 'config_vars' => ['LEX'],
742 'rule_file' => 'lex',
743 'flags' => ['LFLAGS'],
744 'compile' => '$(LEX) $(LFLAGS) $(AM_LFLAGS)',
745 'compiler' => 'LEXCOMPILE',
746 'extensions' => ['.l'],
747 'output_extensions' => sub { (my $ext = $_[0]) =~ tr/l/c/;
748 return ($ext,) },
749 '_finish' => \&lang_lex_finish,
750 '_target_hook' => \&lang_lex_target_hook);
751 register_language ('name' => 'lexxx',
752 'Name' => 'Lex (C++)',
753 'config_vars' => ['LEX'],
754 'rule_file' => 'lex',
755 'flags' => ['LFLAGS'],
756 'compile' => '$(LEX) $(LFLAGS) $(AM_LFLAGS)',
757 'compiler' => 'LEXCOMPILE',
758 'extensions' => ['.l++', '.ll', '.lxx', '.lpp'],
759 'output_extensions' => sub { (my $ext = $_[0]) =~ tr/l/c/;
760 return ($ext,) },
761 '_finish' => \&lang_lex_finish,
762 '_target_hook' => \&lang_lex_target_hook);
764 # Assembler.
765 register_language ('name' => 'asm',
766 'Name' => 'Assembler',
767 'config_vars' => ['CCAS', 'CCASFLAGS'],
769 'flags' => ['CCASFLAGS'],
770 # Users can set AM_ASFLAGS to includes DEFS, INCLUDES,
771 # or anything else required. They can also set AS.
772 'compile' => '$(CCAS) $(AM_CCASFLAGS) $(CCASFLAGS)',
773 'compiler' => 'CCASCOMPILE',
774 'compile_flag' => '-c',
775 'extensions' => ['.s', '.S'],
777 # With assembly we still use the C linker.
778 '_finish' => \&lang_c_finish);
780 # Fortran 77
781 register_language ('name' => 'f77',
782 'Name' => 'Fortran 77',
783 'linker' => 'F77LINK',
784 'link' => '$(F77LD) $(AM_FFLAGS) $(FFLAGS) $(AM_LDFLAGS) $(LDFLAGS) -o $@',
785 'flags' => ['FFLAGS'],
786 'compile' => '$(F77) $(AM_FFLAGS) $(FFLAGS)',
787 'compiler' => 'F77COMPILE',
788 'compile_flag' => '-c',
789 'output_flag' => '-o',
790 'lder' => 'F77LD',
791 'ld' => '$(F77)',
792 'pure' => 1,
793 'extensions' => ['.f', '.for', '.f90']);
795 # Preprocessed Fortran 77
796 #
797 # The current support for preprocessing Fortran 77 just involves
798 # passing `$(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS)
799 # $(CPPFLAGS)' as additional flags to the Fortran 77 compiler, since
800 # this is how GNU Make does it; see the `GNU Make Manual, Edition 0.51
801 # for `make' Version 3.76 Beta' (specifically, from info file
802 # `(make)Catalogue of Rules').
803 #
804 # A better approach would be to write an Autoconf test
805 # (i.e. AC_PROG_FPP) for a Fortran 77 preprocessor, because not all
806 # Fortran 77 compilers know how to do preprocessing. The Autoconf
807 # macro AC_PROG_FPP should test the Fortran 77 compiler first for
808 # preprocessing capabilities, and then fall back on cpp (if cpp were
809 # available).
810 register_language ('name' => 'ppf77',
811 'Name' => 'Preprocessed Fortran 77',
812 'config_vars' => ['F77'],
813 'linker' => 'F77LINK',
814 'link' => '$(F77LD) $(AM_FFLAGS) $(FFLAGS) $(AM_LDFLAGS) $(LDFLAGS) -o $@',
815 'lder' => 'F77LD',
816 'ld' => '$(F77)',
817 'flags' => ['FFLAGS', 'CPPFLAGS'],
818 'compiler' => 'PPF77COMPILE',
819 'compile' => '$(F77) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS) $(CPPFLAGS) $(AM_FFLAGS) $(FFLAGS)',
820 'compile_flag' => '-c',
821 'output_flag' => '-o',
822 'pure' => 1,
823 'extensions' => ['.F']);
825 # Ratfor.
826 register_language ('name' => 'ratfor',
827 'Name' => 'Ratfor',
828 'config_vars' => ['F77'],
829 'linker' => 'F77LINK',
830 'link' => '$(F77LD) $(AM_FFLAGS) $(FFLAGS) $(AM_LDFLAGS) $(LDFLAGS) -o $@',
831 'lder' => 'F77LD',
832 'ld' => '$(F77)',
833 'flags' => ['RFLAGS', 'FFLAGS'],
834 # FIXME also FFLAGS.
835 'compile' => '$(F77) $(AM_FFLAGS) $(FFLAGS) $(AM_RFLAGS) $(RFLAGS)',
836 'compiler' => 'RCOMPILE',
837 'compile_flag' => '-c',
838 'output_flag' => '-o',
839 'pure' => 1,
840 'extensions' => ['.r']);
842 # Java via gcj.
843 register_language ('name' => 'java',
844 'Name' => 'Java',
845 'config_vars' => ['GCJ'],
846 'linker' => 'GCJLINK',
847 'link' => '$(GCJLD) $(AM_GCJFLAGS) $(GCJFLAGS) $(AM_LDFLAGS) $(LDFLAGS) -o $@',
848 'autodep' => 'GCJ',
849 'flags' => ['GCJFLAGS'],
850 'compile' => '$(GCJ) $(AM_GCJFLAGS) $(GCJFLAGS)',
851 'compiler' => 'GCJCOMPILE',
852 'compile_flag' => '-c',
853 'output_flag' => '-o',
854 'lder' => 'GCJLD',
855 'ld' => '$(GCJ)',
856 'pure' => 1,
857 'extensions' => ['.java', '.class', '.zip', '.jar']);
859 ################################################################
861 # Error reporting functions.
863 # err_am ($MESSAGE, [%OPTIONS])
864 # -----------------------------
865 # Uncategorized errors about the current Makefile.am.
866 sub err_am ($;%)
867 {
868 msg_am ('error', @_);
869 }
871 # err_ac ($MESSAGE, [%OPTIONS])
872 # -----------------------------
873 # Uncategorized errors about configure.ac.
874 sub err_ac ($;%)
875 {
876 msg_ac ('error', @_);
877 }
879 # msg_am ($CHANNEL, $MESSAGE, [%OPTIONS])
880 # ---------------------------------------
881 # Messages about about the current Makefile.am.
882 sub msg_am ($$;%)
883 {
884 my ($channel, $msg, %opts) = @_;
885 msg $channel, "${am_file}.am", $msg, %opts;
886 }
888 # msg_ac ($CHANNEL, $MESSAGE, [%OPTIONS])
889 # ---------------------------------------
890 # Messages about about configure.ac.
891 sub msg_ac ($$;%)
892 {
893 my ($channel, $msg, %opts) = @_;
894 msg $channel, $configure_ac, $msg, %opts;
895 }
897 ################################################################
899 # subst ($TEXT)
900 # -------------
901 # Return a configure-style substitution using the indicated text.
902 # We do this to avoid having the substitutions directly in automake.in;
903 # when we do that they are sometimes removed and this causes confusion
904 # and bugs.
905 sub subst ($)
906 {
907 my ($text) = @_;
908 return '@' . $text . '@';
909 }
911 ################################################################
914 # $BACKPATH
915 # &backname ($REL-DIR)
916 # --------------------
917 # If I `cd $REL-DIR', then to come back, I should `cd $BACKPATH'.
918 # For instance `src/foo' => `../..'.
919 # Works with non strictly increasing paths, i.e., `src/../lib' => `..'.
920 sub backname ($)
921 {
922 my ($file) = @_;
923 my @res;
924 foreach (split (/\//, $file))
925 {
926 next if $_ eq '.' || $_ eq '';
927 if ($_ eq '..')
928 {
929 pop @res;
930 }
931 else
932 {
933 push (@res, '..');
934 }
935 }
936 return join ('/', @res) || '.';
937 }
939 ################################################################
942 # Handle AUTOMAKE_OPTIONS variable. Return 1 on error, 0 otherwise.
943 sub handle_options
944 {
945 my $var = var ('AUTOMAKE_OPTIONS');
946 if ($var)
947 {
948 # FIXME: We should disallow conditional definitions of AUTOMAKE_OPTIONS.
949 if (process_option_list ($var->rdef (TRUE)->location,
950 $var->value_as_list_recursive (cond_filter =>
951 TRUE)))
952 {
953 return 1;
954 }
955 }
957 if ($strictness == GNITS)
958 {
959 set_option ('readme-alpha', INTERNAL);
960 set_option ('std-options', INTERNAL);
961 set_option ('check-news', INTERNAL);
962 }
964 return 0;
965 }
968 # get_object_extension ($OUT)
969 # ---------------------------
970 # Return object extension. Just once, put some code into the output.
971 # OUT is the name of the output file
972 sub get_object_extension
973 {
974 my ($out) = @_;
976 # Maybe require libtool library object files.
977 my $extension = '.$(OBJEXT)';
978 $extension = '.lo' if ($out =~ /\.la$/);
980 # Check for automatic de-ANSI-fication.
981 $extension = '$U' . $extension
982 if option 'ansi2knr';
984 $get_object_extension_was_run = 1;
986 return $extension;
987 }
990 # Call finish function for each language that was used.
991 sub handle_languages
992 {
993 if (! option 'no-dependencies')
994 {
995 # Include auto-dep code. Don't include it if DEP_FILES would
996 # be empty.
997 if (&saw_sources_p (0) && keys %dep_files)
998 {
999 # Set location of depcomp.
1000 &define_variable ('depcomp', "\$(SHELL) $config_aux_dir/depcomp",
1001 INTERNAL);
1002 &define_variable ('am__depfiles_maybe', 'depfiles', INTERNAL);
1004 require_conf_file ("$am_file.am", FOREIGN, 'depcomp');
1006 my @deplist = sort keys %dep_files;
1008 # We define this as a conditional variable because BSD
1009 # make can't handle backslashes for continuing comments on
1010 # the following line.
1011 define_pretty_variable ('DEP_FILES',
1012 new Automake::Condition ('AMDEP_TRUE'),
1013 INTERNAL, @deplist);
1015 # Generate each `include' individually. Irix 6 make will
1016 # not properly include several files resulting from a
1017 # variable expansion; generating many separate includes
1018 # seems safest.
1019 $output_rules .= "\n";
1020 foreach my $iter (@deplist)
1021 {
1022 $output_rules .= (subst ('AMDEP_TRUE')
1023 . subst ('am__include')
1024 . ' '
1025 . subst ('am__quote')
1026 . $iter
1027 . subst ('am__quote')
1028 . "\n");
1029 }
1031 # Compute the set of directories to remove in distclean-depend.
1032 my @depdirs = uniq (map { dirname ($_) } @deplist);
1033 $output_rules .= &file_contents ('depend',
1034 new Automake::Location,
1035 DEPDIRS => "@depdirs");
1036 }
1037 }
1038 else
1039 {
1040 &define_variable ('depcomp', '', INTERNAL);
1041 &define_variable ('am__depfiles_maybe', '', INTERNAL);
1042 }
1044 my %done;
1046 # Is the c linker needed?
1047 my $needs_c = 0;
1048 foreach my $ext (sort keys %extension_seen)
1049 {
1050 next unless $extension_map{$ext};
1052 my $lang = $languages{$extension_map{$ext}};
1054 my $rule_file = $lang->rule_file || 'depend2';
1056 # Get information on $LANG.
1057 my $pfx = $lang->autodep;
1058 my $fpfx = ($pfx eq '') ? 'CC' : $pfx;
1060 my ($AMDEP, $FASTDEP) =
1061 (option 'no-dependencies' || $lang->autodep eq 'no')
1062 ? ('FALSE', 'FALSE') : ('AMDEP', "am__fastdep$fpfx");
1064 my %transform = ('EXT' => $ext,
1065 'PFX' => $pfx,
1066 'FPFX' => $fpfx,
1067 'AMDEP' => $AMDEP,
1068 'FASTDEP' => $FASTDEP,
1069 '-c' => $lang->compile_flag || '',
1070 'MORE-THAN-ONE'
1071 => (count_files_for_language ($lang->name) > 1));
1073 # Generate the appropriate rules for this extension.
1074 if (((! option 'no-dependencies') && $lang->autodep ne 'no')
1075 || defined $lang->compile)
1076 {
1077 # Some C compilers don't support -c -o. Use it only if really
1078 # needed.
1079 my $output_flag = $lang->output_flag || '';
1080 $output_flag = '-o'
1081 if (! $output_flag
1082 && $lang->name eq 'c'
1083 && option 'subdir-objects');
1085 # Compute a possible derived extension.
1086 # This is not used by depend2.am.
1087 my $der_ext = (&{$lang->output_extensions} ($ext))[0];
1089 $output_rules .=
1090 file_contents ($rule_file,
1091 new Automake::Location,
1092 %transform,
1093 GENERIC => 1,
1095 'DERIVED-EXT' => $der_ext,
1097 # In this situation we know that the
1098 # object is in this directory, so
1099 # $(DEPDIR) is the correct location for
1100 # dependencies.
1101 DEPBASE => '$(DEPDIR)/$*',
1102 BASE => '$*',
1103 SOURCE => '$<',
1104 OBJ => '$@',
1105 OBJOBJ => '$@',
1106 LTOBJ => '$@',
1108 COMPILE => '$(' . $lang->compiler . ')',
1109 LTCOMPILE => '$(LT' . $lang->compiler . ')',
1110 -o => $output_flag);
1111 }
1113 # Now include code for each specially handled object with this
1114 # language.
1115 my %seen_files = ();
1116 foreach my $file (@{$lang_specific_files{$lang->name}})
1117 {
1118 my ($derived, $source, $obj, $myext) = split (' ', $file);
1120 # We might see a given object twice, for instance if it is
1121 # used under different conditions.
1122 next if defined $seen_files{$obj};
1123 $seen_files{$obj} = 1;
1125 prog_error ("found " . $lang->name .
1126 " in handle_languages, but compiler not defined")
1127 unless defined $lang->compile;
1129 my $obj_compile = $lang->compile;
1131 # Rewrite each occurrence of `AM_$flag' in the compile
1132 # rule into `${derived}_$flag' if it exists.
1133 for my $flag (@{$lang->flags})
1134 {
1135 my $val = "${derived}_$flag";
1136 $obj_compile =~ s/\(AM_$flag\)/\($val\)/
1137 if set_seen ($val);
1138 }
1140 my $obj_ltcompile = '$(LIBTOOL) --mode=compile ' . $obj_compile;
1142 # We _need_ `-o' for per object rules.
1143 my $output_flag = $lang->output_flag || '-o';
1145 my $depbase = dirname ($obj);
1146 $depbase = ''
1147 if $depbase eq '.';
1148 $depbase .= '/'
1149 unless $depbase eq '';
1150 $depbase .= '$(DEPDIR)/' . basename ($obj);
1152 # Support for deansified files in subdirectories is ugly
1153 # enough to deserve an explanation.
1154 #
1155 # A Note about normal ansi2knr processing first. On
1156 #
1157 # AUTOMAKE_OPTIONS = ansi2knr
1158 # bin_PROGRAMS = foo
1159 # foo_SOURCES = foo.c
1160 #
1161 # we generate rules similar to:
1162 #
1163 # foo: foo$U.o; link ...
1164 # foo$U.o: foo$U.c; compile ...
1165 # foo_.c: foo.c; ansi2knr ...
1166 #
1167 # this is fairly compact, and will call ansi2knr depending
1168 # on the value of $U (`' or `_').
1169 #
1170 # It's harder with subdir sources. On
1171 #
1172 # AUTOMAKE_OPTIONS = ansi2knr
1173 # bin_PROGRAMS = foo
1174 # foo_SOURCES = sub/foo.c
1175 #
1176 # we have to create foo_.c in the current directory.
1177 # (Unless the user asks 'subdir-objects'.) This is important
1178 # in case the same file (`foo.c') is compiled from other
1179 # directories with different cpp options: foo_.c would
1180 # be preprocessed for only one set of options if it were
1181 # put in the subdirectory.
1182 #
1183 # Because foo$U.o must be built from either foo_.c or
1184 # sub/foo.c we can't be as concise as in the first example.
1185 # Instead we output
1186 #
1187 # foo: foo$U.o; link ...
1188 # foo_.o: foo_.c; compile ...
1189 # foo.o: sub/foo.c; compile ...
1190 # foo_.c: foo.c; ansi2knr ...
1191 #
1192 # This is why we'll now transform $rule_file twice
1193 # if we detect this case.
1194 # A first time we output the compile rule with `$U'
1195 # replaced by `_' and the source directory removed,
1196 # and another time we simply remove `$U'.
1197 #
1198 # Note that at this point $source (as computed by
1199 # &handle_single_transform_list) is `sub/foo$U.c'.
1200 # This can be confusing: it can be used as-is when
1201 # subdir-objects is set, otherwise you have to know
1202 # it really means `foo_.c' or `sub/foo.c'.
1203 my $objdir = dirname ($obj);
1204 my $srcdir = dirname ($source);
1205 if ($lang->ansi && $obj =~ /\$U/)
1206 {
1207 prog_error "`$obj' contains \$U, but `$source' doesn't."
1208 if $source !~ /\$U/;
1210 (my $source_ = $source) =~ s/\$U/_/g;
1211 # Explicitly clean the _.c files if they are in
1212 # a subdirectory. (In the current directory they get
1213 # erased by a `rm -f *_.c' rule.)
1214 $clean_files{$source_} = MOSTLY_CLEAN
1215 if $objdir ne '.';
1216 # Output an additional rule if _.c and .c are not in
1217 # the same directory. (_.c is always in $objdir.)
1218 if ($objdir ne $srcdir)
1219 {
1220 (my $obj_ = $obj) =~ s/\$U/_/g;
1221 (my $depbase_ = $depbase) =~ s/\$U/_/g;
1222 $source_ = basename ($source_);
1224 $output_rules .=
1225 file_contents ($rule_file,
1226 new Automake::Location,
1227 %transform,
1228 GENERIC => 0,
1230 DEPBASE => $depbase_,
1231 BASE => $obj_,
1232 SOURCE => $source_,
1233 OBJ => "$obj_$myext",
1234 OBJOBJ => "$obj_.obj",
1235 LTOBJ => "$obj_.lo",
1237 COMPILE => $obj_compile,
1238 LTCOMPILE => $obj_ltcompile,
1239 -o => $output_flag);
1240 $obj =~ s/\$U//g;
1241 $depbase =~ s/\$U//g;
1242 $source =~ s/\$U//g;
1243 }
1244 }
1246 $output_rules .=
1247 file_contents ($rule_file,
1248 new Automake::Location,
1249 %transform,
1250 GENERIC => 0,
1252 DEPBASE => $depbase,
1253 BASE => $obj,
1254 SOURCE => $source,
1255 # Use $myext and not `.o' here, in case
1256 # we are actually building a new source
1257 # file -- e.g. via yacc.
1258 OBJ => "$obj$myext",
1259 OBJOBJ => "$obj.obj",
1260 LTOBJ => "$obj.lo",
1262 COMPILE => $obj_compile,
1263 LTCOMPILE => $obj_ltcompile,
1264 -o => $output_flag);
1265 }
1267 # The rest of the loop is done once per language.
1268 next if defined $done{$lang};
1269 $done{$lang} = 1;
1271 # Load the language dependent Makefile chunks.
1272 my %lang = map { uc ($_) => 0 } keys %languages;
1273 $lang{uc ($lang->name)} = 1;
1274 $output_rules .= file_contents ('lang-compile',
1275 new Automake::Location,
1276 %transform, %lang);
1278 # If the source to a program consists entirely of code from a
1279 # `pure' language, for instance C++ for Fortran 77, then we
1280 # don't need the C compiler code. However if we run into
1281 # something unusual then we do generate the C code. There are
1282 # probably corner cases here that do not work properly.
1283 # People linking Java code to Fortran code deserve pain.
1284 $needs_c ||= ! $lang->pure;
1286 define_compiler_variable ($lang)
1287 if ($lang->compile);
1289 define_linker_variable ($lang)
1290 if ($lang->link);
1292 require_variables ("$am_file.am", $lang->Name . " source seen",
1293 TRUE, @{$lang->config_vars});
1295 # Call the finisher.
1296 $lang->finish;
1298 # Flags listed in `->flags' are user variables (per GNU Standards),
1299 # they should not be overridden in the Makefile...
1300 my @dont_override = @{$lang->flags};
1301 # ... and so is LDFLAGS.
1302 push @dont_override, 'LDFLAGS' if $lang->link;
1304 foreach my $flag (@dont_override)
1305 {
1306 my $var = var $flag;
1307 if ($var)
1308 {
1309 for my $cond ($var->conditions->conds)
1310 {
1311 if ($var->rdef ($cond)->owner == VAR_MAKEFILE)
1312 {
1313 msg_cond_var ('gnu', $cond, $flag,
1314 "`$flag' is a user variable, "
1315 . "you should not override it;\n"
1316 . "use `AM_$flag' instead.");
1317 }
1318 }
1319 }
1320 }
1321 }
1323 # If the project is entirely C++ or entirely Fortran 77 (i.e., 1
1324 # suffix rule was learned), don't bother with the C stuff. But if
1325 # anything else creeps in, then use it.
1326 $needs_c = 1
1327 if $need_link || suffix_rules_count > 1;
1329 if ($needs_c)
1330 {
1331 &define_compiler_variable ($languages{'c'})
1332 unless defined $done{$languages{'c'}};
1333 define_linker_variable ($languages{'c'});
1334 }
1335 }
1337 # Check to make sure a source defined in LIBOBJS is not explicitly
1338 # mentioned. This is a separate function (as opposed to being inlined
1339 # in handle_source_transform) because it isn't always appropriate to
1340 # do this check.
1341 sub check_libobjs_sources
1342 {
1343 my ($one_file, $unxformed) = @_;
1345 foreach my $prefix ('', 'EXTRA_', 'dist_', 'nodist_',
1346 'dist_EXTRA_', 'nodist_EXTRA_')
1347 {
1348 my @files;
1349 my $varname = $prefix . $one_file . '_SOURCES';
1350 my $var = var ($varname);
1351 if ($var)
1352 {
1353 @files = $var->value_as_list_recursive;
1354 }
1355 elsif ($prefix eq '')
1356 {
1357 @files = ($unxformed . '.c');
1358 }
1359 else
1360 {
1361 next;
1362 }
1364 foreach my $file (@files)
1365 {
1366 err_var ($prefix . $one_file . '_SOURCES',
1367 "automatically discovered file `$file' should not" .
1368 " be explicitly mentioned")
1369 if defined $libsources{$file};
1370 }
1371 }
1372 }
1375 # @OBJECTS
1376 # handle_single_transform_list ($VAR, $TOPPARENT, $DERIVED, $OBJ, @FILES)
1377 # -----------------------------------------------------------------------
1378 # Does much of the actual work for handle_source_transform.
1379 # Arguments are:
1380 # $VAR is the name of the variable that the source filenames come from
1381 # $TOPPARENT is the name of the _SOURCES variable which is being processed
1382 # $DERIVED is the name of resulting executable or library
1383 # $OBJ is the object extension (e.g., `$U.lo')
1384 # @FILES is the list of source files to transform
1385 # Result is a list of the names of objects
1386 # %linkers_used will be updated with any linkers needed
1387 sub handle_single_transform_list ($$$$@)
1388 {
1389 my ($var, $topparent, $derived, $obj, @files) = @_;
1390 my @result = ();
1391 my $nonansi_obj = $obj;
1392 $nonansi_obj =~ s/\$U//g;
1394 # Turn sources into objects. We use a while loop like this
1395 # because we might add to @files in the loop.
1396 while (scalar @files > 0)
1397 {
1398 $_ = shift @files;
1400 # Configure substitutions in _SOURCES variables are errors.
1401 if (/^\@.*\@$/)
1402 {
1403 my $parent_msg = '';
1404 $parent_msg = "\nand is referred to from `$topparent'"
1405 if $topparent ne $var->name;
1406 err_var ($var,
1407 "`" . $var->name . "' includes configure substitution `$_'"
1408 . $parent_msg . ";\nconfigure " .
1409 "substitutions are not allowed in _SOURCES variables");
1410 next;
1411 }
1413 # If the source file is in a subdirectory then the `.o' is put
1414 # into the current directory, unless the subdir-objects option
1415 # is in effect.
1417 # Split file name into base and extension.
1418 next if ! /^(?:(.*)\/)?([^\/]*)($KNOWN_EXTENSIONS_PATTERN)$/;
1419 my $full = $_;
1420 my $directory = $1 || '';
1421 my $base = $2;
1422 my $extension = $3;
1424 # We must generate a rule for the object if it requires its own flags.
1425 my $renamed = 0;
1426 my ($linker, $object);
1428 # This records whether we've seen a derived source file (e.g.
1429 # yacc output).
1430 my $derived_source = 0;
1432 # This holds the `aggregate context' of the file we are
1433 # currently examining. If the file is compiled with
1434 # per-object flags, then it will be the name of the object.
1435 # Otherwise it will be `AM'. This is used by the target hook
1436 # language function.
1437 my $aggregate = 'AM';
1439 $extension = &derive_suffix ($extension, $nonansi_obj);
1440 my $lang;
1441 if ($extension_map{$extension} &&
1442 ($lang = $languages{$extension_map{$extension}}))
1443 {
1444 # Found the language, so see what it says.
1445 &saw_extension ($extension);
1447 # Note: computed subr call. The language rewrite function
1448 # should return one of the LANG_* constants. It could
1449 # also return a list whose first value is such a constant
1450 # and whose second value is a new source extension which
1451 # should be applied. This means this particular language
1452 # generates another source file which we must then process
1453 # further.
1454 my $subr = \&{'lang_' . $lang->name . '_rewrite'};
1455 my ($r, $source_extension)
1456 = &$subr ($directory, $base, $extension);
1457 # Skip this entry if we were asked not to process it.
1458 next if $r == LANG_IGNORE;
1460 # Now extract linker and other info.
1461 $linker = $lang->linker;
1463 my $this_obj_ext;
1464 if (defined $source_extension)
1465 {
1466 $this_obj_ext = $source_extension;
1467 $derived_source = 1;
1468 }
1469 elsif ($lang->ansi)
1470 {
1471 $this_obj_ext = $obj;
1472 }
1473 else
1474 {
1475 $this_obj_ext = $nonansi_obj;
1476 }
1477 $object = $base . $this_obj_ext;
1479 # Do we have per-executable flags for this executable?
1480 my $have_per_exec_flags = 0;
1481 foreach my $flag (@{$lang->flags})
1482 {
1483 if (set_seen ("${derived}_$flag"))
1484 {
1485 $have_per_exec_flags = 1;
1486 last;
1487 }
1488 }
1490 if ($have_per_exec_flags)
1491 {
1492 # We have a per-executable flag in effect for this
1493 # object. In this case we rewrite the object's
1494 # name to ensure it is unique. We also require
1495 # the `compile' program to deal with compilers
1496 # where `-c -o' does not work.
1498 # We choose the name `DERIVED_OBJECT' to ensure
1499 # (1) uniqueness, and (2) continuity between
1500 # invocations. However, this will result in a
1501 # name that is too long for losing systems, in
1502 # some situations. So we provide _SHORTNAME to
1503 # override.
1505 my $dname = $derived;
1506 my $var = var ($derived . '_SHORTNAME');
1507 if ($var)
1508 {
1509 # FIXME: should use the same Condition as
1510 # the _SOURCES variable. But this is really
1511 # silly overkill -- nobody should have
1512 # conditional shortnames.
1513 $dname = $var->variable_value;
1514 }
1515 $object = $dname . '-' . $object;
1517 require_conf_file ("$am_file.am", FOREIGN, 'compile')
1518 if $lang->name eq 'c';
1520 prog_error ($lang->name . " flags defined without compiler")
1521 if ! defined $lang->compile;
1523 $renamed = 1;
1524 }
1526 # If rewrite said it was ok, put the object into a
1527 # subdir.
1528 if ($r == LANG_SUBDIR && $directory ne '')
1529 {
1530 $object = $directory . '/' . $object;
1531 }
1533 # If doing dependency tracking, then we can't print
1534 # the rule. If we have a subdir object, we need to
1535 # generate an explicit rule. Actually, in any case
1536 # where the object is not in `.' we need a special
1537 # rule. The per-object rules in this case are
1538 # generated later, by handle_languages.
1539 if ($renamed || $directory ne '')
1540 {
1541 my $obj_sans_ext = substr ($object, 0,
1542 - length ($this_obj_ext));
1543 my $full_ansi = $full;
1544 if ($lang->ansi && option 'ansi2knr')
1545 {
1546 $full_ansi =~ s/$KNOWN_EXTENSIONS_PATTERN$/\$U$&/;
1547 $obj_sans_ext .= '$U';
1548 }
1550 my $val = ("$full_ansi $obj_sans_ext "
1551 # Only use $this_obj_ext in the derived
1552 # source case because in the other case we
1553 # *don't* want $(OBJEXT) to appear here.
1554 . ($derived_source ? $this_obj_ext : '.o'));
1556 # If we renamed the object then we want to use the
1557 # per-executable flag name. But if this is simply a
1558 # subdir build then we still want to use the AM_ flag
1559 # name.
1560 if ($renamed)
1561 {
1562 $val = "$derived $val";
1563 $aggregate = $derived;
1564 }
1565 else
1566 {
1567 $val = "AM $val";
1568 }
1570 # Each item on this list is a string consisting of
1571 # four space-separated values: the derived flag prefix
1572 # (e.g. for `foo_CFLAGS', it is `foo'), the name of the
1573 # source file, the base name of the output file, and
1574 # the extension for the object file.
1575 push (@{$lang_specific_files{$lang->name}}, $val);
1576 }
1577 }
1578 elsif ($extension eq $nonansi_obj)
1579 {
1580 # This is probably the result of a direct suffix rule.
1581 # In this case we just accept the rewrite.
1582 $object = "$base$extension";
1583 $linker = '';
1584 }
1585 else
1586 {
1587 # No error message here. Used to have one, but it was
1588 # very unpopular.
1589 # FIXME: we could potentially do more processing here,
1590 # perhaps treating the new extension as though it were a
1591 # new source extension (as above). This would require
1592 # more restructuring than is appropriate right now.
1593 next;
1594 }
1596 err_am "object `$object' created by `$full' and `$object_map{$object}'"
1597 if (defined $object_map{$object}
1598 && $object_map{$object} ne $full);
1600 my $comp_val = (($object =~ /\.lo$/)
1601 ? COMPILE_LIBTOOL : COMPILE_ORDINARY);
1602 (my $comp_obj = $object) =~ s/\.lo$/.\$(OBJEXT)/;
1603 if (defined $object_compilation_map{$comp_obj}
1604 && $object_compilation_map{$comp_obj} != 0
1605 # Only see the error once.
1606 && ($object_compilation_map{$comp_obj}
1607 != (COMPILE_LIBTOOL | COMPILE_ORDINARY))
1608 && $object_compilation_map{$comp_obj} != $comp_val)
1609 {
1610 err_am "object `$comp_obj' created both with libtool and without";
1611 }
1612 $object_compilation_map{$comp_obj} |= $comp_val;
1614 if (defined $lang)
1615 {
1616 # Let the language do some special magic if required.
1617 $lang->target_hook ($aggregate, $object, $full);
1618 }
1620 if ($derived_source)
1621 {
1622 prog_error ($lang->name . " has automatic dependency tracking")
1623 if $lang->autodep ne 'no';
1624 # Make sure this new source file is handled next. That will
1625 # make it appear to be at the right place in the list.
1626 unshift (@files, $object);
1627 # Distribute derived sources unless the source they are
1628 # derived from is not.
1629 &push_dist_common ($object)
1630 unless ($topparent =~ /^(?:nobase_)?nodist_/);
1631 next;
1632 }
1634 $linkers_used{$linker} = 1;
1636 push (@result, $object);
1638 if (! defined $object_map{$object})
1639 {
1640 my @dep_list = ();
1641 $object_map{$object} = $full;
1643 # If resulting object is in subdir, we need to make
1644 # sure the subdir exists at build time.
1645 if ($object =~ /\//)
1646 {
1647 # FIXME: check that $DIRECTORY is somewhere in the
1648 # project
1650 # For Java, the way we're handling it right now, a
1651 # `..' component doesn't make sense.
1652 if ($lang->name eq 'java' && $object =~ /(\/|^)\.\.\//)
1653 {
1654 err_am "`$full' should not contain a `..' component";
1655 }
1657 # Make sure object is removed by `make mostlyclean'.
1658 $compile_clean_files{$object} = MOSTLY_CLEAN;
1659 # If we have a libtool object then we also must remove
1660 # the ordinary .o.
1661 if ($object =~ /\.lo$/)
1662 {
1663 (my $xobj = $object) =~ s,lo$,\$(OBJEXT),;
1664 $compile_clean_files{$xobj} = MOSTLY_CLEAN;
1666 # Remove any libtool object in this directory.
1667 $libtool_clean_directories{$directory} = 1;
1668 }
1670 push (@dep_list, require_build_directory ($directory));
1672 # If we're generating dependencies, we also want
1673 # to make sure that the appropriate subdir of the
1674 # .deps directory is created.
1675 push (@dep_list,
1676 require_build_directory ($directory . '/$(DEPDIR)'))
1677 unless option 'no-dependencies';
1678 }
1680 &pretty_print_rule ($object . ':', "\t", @dep_list)
1681 if scalar @dep_list > 0;
1682 }
1684 # Transform .o or $o file into .P file (for automatic
1685 # dependency code).
1686 if ($lang && $lang->autodep ne 'no')
1687 {
1688 my $depfile = $object;
1689 $depfile =~ s/\.([^.]*)$/.P$1/;
1690 $depfile =~ s/\$\(OBJEXT\)$/o/;
1691 $dep_files{dirname ($depfile) . '/$(DEPDIR)/'
1692 . basename ($depfile)} = 1;
1693 }
1694 }
1696 return @result;
1697 }
1700 # $LINKER
1701 # define_objects_from_sources ($VAR, $OBJVAR, $NODEFINE, $ONE_FILE,
1702 # $OBJ, $PARENT, $TOPPARENT, $WHERE)
1703 # ---------------------------------------------------------------------
1704 # Define an _OBJECTS variable for a _SOURCES variable (or subvariable)
1705 #
1706 # Arguments are:
1707 # $VAR is the name of the _SOURCES variable
1708 # $OBJVAR is the name of the _OBJECTS variable if known (otherwise
1709 # it will be generated and returned).
1710 # $NODEFINE is a boolean: if true, $OBJVAR will not be defined (but
1711 # work done to determine the linker will be).
1712 # $ONE_FILE is the canonical (transformed) name of object to build
1713 # $OBJ is the object extension (i.e. either `.o' or `.lo').
1714 # $TOPPARENT is the _SOURCES variable being processed.
1715 # $WHERE context into which this definition is done
1716 #
1717 # Result is a pair ($LINKER, $OBJVAR):
1718 # $LINKER is a boolean, true if a linker is needed to deal with the objects
1719 sub define_objects_from_sources ($$$$$$$)
1720 {
1721 my ($var, $objvar, $nodefine, $one_file, $obj, $topparent, $where) = @_;
1723 my $needlinker = "";
1725 transform_variable_recursively
1726 ($var, $objvar, 'am__objects', $nodefine, $where,
1727 # The transform code to run on each filename.
1728 sub {
1729 my ($subvar, $val, $cond, $full_cond) = @_;
1730 my @trans = &handle_single_transform_list ($subvar, $topparent,
1731 $one_file, $obj, $val);
1732 $needlinker = "true" if @trans;
1733 return @trans;
1734 });
1736 return $needlinker;
1737 }
1740 # Handle SOURCE->OBJECT transform for one program or library.
1741 # Arguments are:
1742 # canonical (transformed) name of object to build
1743 # actual name of object to build
1744 # object extension (i.e. either `.o' or `$o'.
1745 # Return result is name of linker variable that must be used.
1746 # Empty return means just use `LINK'.
1747 sub handle_source_transform
1748 {
1749 # one_file is canonical name. unxformed is given name. obj is
1750 # object extension.
1751 my ($one_file, $unxformed, $obj, $where) = @_;
1753 my ($linker) = '';
1755 # No point in continuing if _OBJECTS is defined.
1756 return if reject_var ($one_file . '_OBJECTS',
1757 $one_file . '_OBJECTS should not be defined');
1759 my %used_pfx = ();
1760 my $needlinker;
1761 %linkers_used = ();
1762 foreach my $prefix ('', 'EXTRA_', 'dist_', 'nodist_',
1763 'dist_EXTRA_', 'nodist_EXTRA_')
1764 {
1765 my $varname = $prefix . $one_file . "_SOURCES";
1766 my $var = var $varname;
1767 next unless $var;
1769 # We are going to define _OBJECTS variables using the prefix.
1770 # Then we glom them all together. So we can't use the null
1771 # prefix here as we need it later.
1772 my $xpfx = ($prefix eq '') ? 'am_' : $prefix;
1774 # Keep track of which prefixes we saw.
1775 $used_pfx{$xpfx} = 1
1776 unless $prefix =~ /EXTRA_/;
1778 push @sources, "\$($varname)";
1779 if ($prefix !~ /^nodist_/)
1780 {
1781 # If the VAR wasn't defined conditionally, we add
1782 # it to DIST_SOURCES as is. Otherwise we create a
1783 # am__VAR_DIST variable which contains all possible values,
1784 # and add this variable to DIST_SOURCES.
1785 my $distvar = $varname;
1786 if ($var->has_conditional_contents)
1787 {
1788 $distvar = "am__${varname}_DIST";
1789 my @files = uniq ($var->value_as_list_recursive);
1790 define_pretty_variable ($distvar, TRUE, $where, @files);
1791 }
1792 push @dist_sources, "\$($distvar)"
1793 }
1795 $needlinker |=
1796 define_objects_from_sources ($varname,
1797 $xpfx . $one_file . '_OBJECTS',
1798 $prefix =~ /EXTRA_/,
1799 $one_file, $obj, $varname, $where);
1800 }
1801 if ($needlinker)
1802 {
1803 $linker ||= &resolve_linker (%linkers_used);
1804 }
1806 my @keys = sort keys %used_pfx;
1807 if (scalar @keys == 0)
1808 {
1809 # The default source for libfoo.la is libfoo.c, but for
1810 # backward compatibility we first look at libfoo_la.c
1811 my $old_default_source = "$one_file.c";
1812 (my $default_source = $unxformed) =~ s,(\.[^./\\]*)?$,.c,;
1813 if ($old_default_source ne $default_source
1814 && (rule $old_default_source || -f $old_default_source))
1815 {
1816 my $loc = $where->clone;
1817 $loc->pop_context;
1818 msg ('obsolete', $loc,
1819 "the default source for `$unxformed' has been changed "
1820 . "to `$default_source'.\n(Using `$old_default_source' for "
1821 . "backward compatibility.)");
1822 $default_source = $old_default_source;
1823 }
1825 &define_variable ($one_file . "_SOURCES", $default_source, $where);
1826 push (@sources, $default_source);
1827 push (@dist_sources, $default_source);
1829 %linkers_used = ();
1830 my (@result) =
1831 &handle_single_transform_list ($one_file . '_SOURCES',
1832 $one_file . '_SOURCES',
1833 $one_file, $obj,
1834 $default_source);
1835 $linker ||= &resolve_linker (%linkers_used);
1836 define_pretty_variable ($one_file . '_OBJECTS', TRUE, $where, @result);
1837 }
1838 else
1839 {
1840 @keys = map { '$(' . $_ . $one_file . '_OBJECTS)' } @keys;
1841 define_pretty_variable ($one_file . '_OBJECTS', TRUE, $where, @keys);
1842 }
1844 # If we want to use `LINK' we must make sure it is defined.
1845 if ($linker eq '')
1846 {
1847 $need_link = 1;
1848 }
1850 return $linker;
1851 }
1854 # handle_lib_objects ($XNAME, $VAR)
1855 # ---------------------------------
1856 # Special-case ALLOCA and LIBOBJS substitutions in _LDADD or _LIBADD variables.
1857 # Also, generate _DEPENDENCIES variable if appropriate.
1858 # Arguments are:
1859 # transformed name of object being built, or empty string if no object
1860 # name of _LDADD/_LIBADD-type variable to examine
1861 # Returns 1 if LIBOBJS seen, 0 otherwise.
1862 sub handle_lib_objects
1863 {
1864 my ($xname, $varname) = @_;
1866 my $var = var ($varname);
1867 prog_error "handle_lib_objects: `$varname' undefined"
1868 unless $var;
1869 prog_error "handle_lib_objects: unexpected variable name `$varname'"
1870 unless $varname =~ /^(.*)(?:LIB|LD)ADD$/;
1871 my $prefix = $1 || 'AM_';
1873 my $seen_libobjs = 0;
1874 my $flagvar = 0;
1876 transform_variable_recursively
1877 ($varname, $xname . '_DEPENDENCIES', 'am__DEPENDENCIES',
1878 ! $xname, INTERNAL,
1879 # Transformation function, run on each filename.
1880 sub {
1881 my ($subvar, $val, $cond, $full_cond) = @_;
1883 if ($val =~ /^-/)
1884 {
1885 # Skip -lfoo and -Ldir silently; these are explicitly allowed.
1886 if ($val !~ /^-[lL]/ &&
1887 # Skip -dlopen and -dlpreopen; these are explicitly allowed
1888 # for Libtool libraries or programs. (Actually we are a bit
1889 # laxest here since this code also applies to non-libtool
1890 # libraries or programs, for which -dlopen and -dlopreopen
1891 # are pure non-sence. Diagnosting this doesn't seems very
1892 # important: the developer will quickly get complaints from
1893 # the linker.)
1894 $val !~ /^-dl(?:pre)?open$/ &&
1895 # Only get this error once.
1896 ! $flagvar)
1897 {
1898 $flagvar = 1;
1899 # FIXME: should display a stack of nested variables
1900 # as context when $var != $subvar.
1901 err_var ($var, "linker flags such as `$val' belong in "
1902 . "`${prefix}LDFLAGS");
1903 }
1904 return ();
1905 }
1906 elsif ($val !~ /^\@.*\@$/)
1907 {
1908 # Assume we have a file of some sort, and output it into the
1909 # dependency variable. Autoconf substitutions are not output;
1910 # rarely is a new dependency substituted into e.g. foo_LDADD
1911 # -- but bad things (e.g. -lX11) are routinely substituted.
1912 # Note that LIBOBJS and ALLOCA are exceptions to this rule,
1913 # and handled specially below.
1914 return $val;
1915 }
1916 elsif ($val =~ /^\@(LT)?LIBOBJS\@$/)
1917 {
1918 handle_LIBOBJS ($subvar, $full_cond, $1);
1919 $seen_libobjs = 1;
1920 return $val;
1921 }
1922 elsif ($val =~ /^\@(LT)?ALLOCA\@$/)
1923 {
1924 handle_ALLOCA ($subvar, $full_cond, $1);
1925 return $val;
1926 }
1927 else
1928 {
1929 return ();
1930 }
1931 });
1933 return $seen_libobjs;
1934 }
1936 sub handle_LIBOBJS ($$$)
1937 {
1938 my ($var, $cond, $lt) = @_;
1939 $lt ||= '';
1940 my $myobjext = ($1 ? 'l' : '') . 'o';
1942 $var->requires_variables ("\@${lt}LIBOBJS\@ used", $lt . 'LIBOBJS')
1943 if ! keys %libsources;
1945 foreach my $iter (keys %libsources)
1946 {
1947 if ($iter =~ /\.[cly]$/)
1948 {
1949 &saw_extension ($&);
1950 &saw_extension ('.c');
1951 }
1953 if ($iter =~ /\.h$/)
1954 {
1955 require_file_with_macro ($cond, $var, FOREIGN, $iter);
1956 }
1957 elsif ($iter ne 'alloca.c')
1958 {
1959 my $rewrite = $iter;
1960 $rewrite =~ s/\.c$/.P$myobjext/;
1961 $dep_files{'$(DEPDIR)/' . $rewrite} = 1;
1962 $rewrite = "^" . quotemeta ($iter) . "\$";
1963 # Only require the file if it is not a built source.
1964 my $bs = var ('BUILT_SOURCES');
1965 if (! $bs || ! grep (/$rewrite/, $bs->value_as_list_recursive))
1966 {
1967 require_file_with_macro ($cond, $var, FOREIGN, $iter);
1968 }
1969 }
1970 }
1971 }
1973 sub handle_ALLOCA ($$$)
1974 {
1975 my ($var, $cond, $lt) = @_;
1976 my $myobjext = ($lt ? 'l' : '') . 'o';
1977 $lt ||= '';
1978 $var->requires_variables ("\@${lt}ALLOCA\@ used", $lt . 'ALLOCA');
1979 $dep_files{'$(DEPDIR)/alloca.P' . $myobjext} = 1;
1980 require_file_with_macro ($cond, $var, FOREIGN, 'alloca.c');
1981 &saw_extension ('c');
1982 }
1984 # Canonicalize the input parameter
1985 sub canonicalize
1986 {
1987 my ($string) = @_;
1988 $string =~ tr/A-Za-z0-9_\@/_/c;
1989 return $string;
1990 }
1992 # Canonicalize a name, and check to make sure the non-canonical name
1993 # is never used. Returns canonical name. Arguments are name and a
1994 # list of suffixes to check for.
1995 sub check_canonical_spelling
1996 {
1997 my ($name, @suffixes) = @_;
1999 my $xname = &canonicalize ($name);
2000 if ($xname ne $name)
2001 {
2002 foreach my $xt (@suffixes)
2003 {
2004 reject_var ("$name$xt", "use `$xname$xt', not `$name$xt'");
2005 }
2006 }
2008 return $xname;
2009 }
2012 # handle_compile ()
2013 # -----------------
2014 # Set up the compile suite.
2015 sub handle_compile ()
2016 {
2017 return
2018 unless $get_object_extension_was_run;
2020 # Boilerplate.
2021 my $default_includes = '';
2022 if (! option 'nostdinc')
2023 {
2024 $default_includes = ' -I. -I$(srcdir)';
2026 my $var = var 'CONFIG_HEADER';
2027 if ($var)
2028 {
2029 foreach my $hdr (split (' ', $var->variable_value))
2030 {
2031 $default_includes .= ' -I' . dirname ($hdr);
2032 }
2033 }
2034 }
2036 my (@mostly_rms, @dist_rms);
2037 foreach my $item (sort keys %compile_clean_files)
2038 {
2039 if ($compile_clean_files{$item} == MOSTLY_CLEAN)
2040 {
2041 push (@mostly_rms, "\t-rm -f $item");
2042 }
2043 elsif ($compile_clean_files{$item} == DIST_CLEAN)
2044 {
2045 push (@dist_rms, "\t-rm -f $item");
2046 }
2047 else
2048 {
2049 prog_error 'invalid entry in %compile_clean_files';
2050 }
2051 }
2053 my ($coms, $vars, $rules) =
2054 &file_contents_internal (1, "$libdir/am/compile.am",
2055 new Automake::Location,
2056 ('DEFAULT_INCLUDES' => $default_includes,
2057 'MOSTLYRMS' => join ("\n", @mostly_rms),
2058 'DISTRMS' => join ("\n", @dist_rms)));
2059 $output_vars .= $vars;
2060 $output_rules .= "$coms$rules";
2062 # Check for automatic de-ANSI-fication.
2063 if (option 'ansi2knr')
2064 {
2065 my ($ansi2knr_filename, $ansi2knr_where) = @{option 'ansi2knr'};
2066 my $ansi2knr_dir = '';
2068 require_variables ($ansi2knr_where, "option `ansi2knr' is used",
2069 TRUE, "ANSI2KNR", "U");
2071 # topdir is where ansi2knr should be.
2072 if ($ansi2knr_filename eq 'ansi2knr')
2073 {
2074 # Only require ansi2knr files if they should appear in
2075 # this directory.
2076 require_file ($ansi2knr_where, FOREIGN,
2077 'ansi2knr.c', 'ansi2knr.1');
2079 # ansi2knr needs to be built before subdirs, so unshift it.
2080 unshift (@all, '$(ANSI2KNR)');
2081 }
2082 else
2083 {
2084 $ansi2knr_dir = dirname ($ansi2knr_filename);
2085 }
2087 $output_rules .= &file_contents ('ansi2knr',
2088 new Automake::Location,
2089 'ANSI2KNR-DIR' => $ansi2knr_dir);
2091 }
2092 }
2094 # handle_libtool ()
2095 # -----------------
2096 # Handle libtool rules.
2097 sub handle_libtool
2098 {
2099 return unless var ('LIBTOOL');
2101 # Libtool requires some files, but only at top level.
2102 require_conf_file_with_macro (TRUE, 'LIBTOOL', FOREIGN, @libtool_files)
2103 if $relative_dir eq '.';
2105 my @libtool_rms;
2106 foreach my $item (sort keys %libtool_clean_directories)
2107 {
2108 my $dir = ($item eq '.') ? '' : "$item/";
2109 # .libs is for Unix, _libs for DOS.
2110 push (@libtool_rms, "\t-rm -rf ${dir}.libs ${dir}_libs");
2111 }
2113 # Output the libtool compilation rules.
2114 $output_rules .= &file_contents ('libtool',
2115 new Automake::Location,
2116 LTRMS => join ("\n", @libtool_rms));
2117 }
2119 # handle_programs ()
2120 # ------------------
2121 # Handle C programs.
2122 sub handle_programs
2123 {
2124 my @proglist = &am_install_var ('progs', 'PROGRAMS',
2125 'bin', 'sbin', 'libexec', 'pkglib',
2126 'noinst', 'check');
2127 return if ! @proglist;
2129 my $seen_global_libobjs =
2130 var ('LDADD') && &handle_lib_objects ('', 'LDADD');
2132 foreach my $pair (@proglist)
2133 {
2134 my ($where, $one_file) = @$pair;
2136 my $seen_libobjs = 0;
2137 my $obj = &get_object_extension ($one_file);
2139 # Strip any $(EXEEXT) suffix the user might have added, or this
2140 # will confuse &handle_source_transform and &check_canonical_spelling.
2141 # We'll add $(EXEEXT) back later anyway.
2142 $one_file =~ s/\$\(EXEEXT\)$//;
2144 # Canonicalize names and check for misspellings.
2145 my $xname = &check_canonical_spelling ($one_file, '_LDADD', '_LDFLAGS',
2146 '_SOURCES', '_OBJECTS',
2147 '_DEPENDENCIES');
2149 $where->push_context ("while processing program `$one_file'");
2150 $where->set (INTERNAL->get);
2152 my $linker = &handle_source_transform ($xname, $one_file, $obj, $where);
2154 if (var ($xname . "_LDADD"))
2155 {
2156 $seen_libobjs = &handle_lib_objects ($xname, $xname . '_LDADD');
2157 }
2158 else
2159 {
2160 # User didn't define prog_LDADD override. So do it.
2161 &define_variable ($xname . '_LDADD', '$(LDADD)', $where);
2163 # This does a bit too much work. But we need it to
2164 # generate _DEPENDENCIES when appropriate.
2165 if (var ('LDADD'))
2166 {
2167 $seen_libobjs = &handle_lib_objects ($xname, 'LDADD');
2168 }
2169 }
2171 reject_var ($xname . '_LIBADD',
2172 "use `${xname}_LDADD', not `${xname}_LIBADD'");
2174 set_seen ($xname . '_DEPENDENCIES');
2175 set_seen ($xname . '_LDFLAGS');
2177 # Determine program to use for link.
2178 my $xlink;
2179 if (var ($xname . '_LINK'))
2180 {
2181 $xlink = $xname . '_LINK';
2182 }
2183 else
2184 {
2185 $xlink = $linker ? $linker : 'LINK';
2186 }
2188 # If the resulting program lies into a subdirectory,
2189 # make sure this directory will exist.
2190 my $dirstamp = require_build_directory_maybe ($one_file);
2192 $output_rules .= &file_contents ('program',
2193 $where,
2194 PROGRAM => $one_file,
2195 XPROGRAM => $xname,
2196 XLINK => $xlink,
2197 DIRSTAMP => $dirstamp,
2198 EXEEXT => '$(EXEEXT)');
2200 if ($seen_libobjs || $seen_global_libobjs)
2201 {
2202 if (var ($xname . '_LDADD'))
2203 {
2204 &check_libobjs_sources ($xname, $xname . '_LDADD');
2205 }
2206 elsif (var ('LDADD'))
2207 {
2208 &check_libobjs_sources ($xname, 'LDADD');
2209 }
2210 }
2211 }
2212 }
2215 # handle_libraries ()
2216 # -------------------
2217 # Handle libraries.
2218 sub handle_libraries
2219 {
2220 my @liblist = &am_install_var ('libs', 'LIBRARIES',
2221 'lib', 'pkglib', 'noinst', 'check');
2222 return if ! @liblist;
2224 my @prefix = am_primary_prefixes ('LIBRARIES', 0, 'lib', 'pkglib',
2225 'noinst', 'check');
2227 if (@prefix)
2228 {
2229 my $var = rvar ($prefix[0] . '_LIBRARIES');
2230 $var->requires_variables ('library used', 'RANLIB');
2231 }
2233 foreach my $pair (@liblist)
2234 {
2235 my ($where, $onelib) = @$pair;
2237 my $seen_libobjs = 0;
2238 # Check that the library fits the standard naming convention.
2239 if (basename ($onelib) !~ /^lib.*\.a/)
2240 {
2241 error $where, "`$onelib' is not a standard library name";
2242 }
2244 $where->push_context ("while processing library `$onelib'");
2245 $where->set (INTERNAL->get);
2247 my $obj = &get_object_extension ($onelib);
2249 # Canonicalize names and check for misspellings.
2250 my $xlib = &check_canonical_spelling ($onelib, '_LIBADD', '_SOURCES',
2251 '_OBJECTS', '_DEPENDENCIES',
2252 '_AR');
2254 if (! var ($xlib . '_AR'))
2255 {
2256 &define_variable ($xlib . '_AR', '$(AR) $(ARFLAGS)', $where);
2257 }
2259 # Generate support for conditional object inclusion in
2260 # libraries.
2261 if (var ($xlib . '_LIBADD'))
2262 {
2263 if (&handle_lib_objects ($xlib, $xlib . '_LIBADD'))
2264 {
2265 $seen_libobjs = 1;
2266 }
2267 }
2268 else
2269 {
2270 &define_variable ($xlib . "_LIBADD", '', $where);
2271 }
2273 reject_var ($xlib . '_LDADD',
2274 "use `${xlib}_LIBADD', not `${xlib}_LDADD'");
2276 # Make sure we at look at this.
2277 set_seen ($xlib . '_DEPENDENCIES');
2279 &handle_source_transform ($xlib, $onelib, $obj, $where);
2281 # If the resulting library lies into a subdirectory,
2282 # make sure this directory will exist.
2283 my $dirstamp = require_build_directory_maybe ($onelib);
2285 $output_rules .= &file_contents ('library',
2286 $where,
2287 LIBRARY => $onelib,
2288 XLIBRARY => $xlib,
2289 DIRSTAMP => $dirstamp);
2291 if ($seen_libobjs)
2292 {
2293 if (var ($xlib . '_LIBADD'))
2294 {
2295 &check_libobjs_sources ($xlib, $xlib . '_LIBADD');
2296 }
2297 }
2298 }
2299 }
2302 # handle_ltlibraries ()
2303 # ---------------------
2304 # Handle shared libraries.
2305 sub handle_ltlibraries
2306 {
2307 my @liblist = &am_install_var ('ltlib', 'LTLIBRARIES',
2308 'noinst', 'lib', 'pkglib', 'check');
2309 return if ! @liblist;
2311 my %instdirs;
2312 my @prefix = am_primary_prefixes ('LTLIBRARIES', 0, 'lib', 'pkglib',
2313 'noinst', 'check');
2315 if (@prefix)
2316 {
2317 my $var = rvar ($prefix[0] . '_LTLIBRARIES');
2318 $var->requires_variables ('Libtool library used', 'LIBTOOL');
2319 }
2321 my %liblocations = (); # Location (in Makefile.am) of each library.
2323 foreach my $key (@prefix)
2324 {
2325 # Get the installation directory of each library.
2326 (my $dir = $key) =~ s/^nobase_//;
2327 my $var = rvar ($key . '_LTLIBRARIES');
2328 for my $pair ($var->value_as_list_recursive (location => 1))
2329 {
2330 my ($where, $lib) = @$pair;
2331 # We reject libraries which are installed in several places,
2332 # because we don't handle this in the rules (think `-rpath').
2333 #
2334 # However, we allow the same library to be listed many times
2335 # for the same directory. This is for users who need setups
2336 # like
2337 # if COND1
2338 # lib_LTLIBRARIES = libfoo.la
2339 # endif
2340 # if COND2
2341 # lib_LTLIBRARIES = libfoo.la
2342 # endif
2343 #
2344 # Actually this will also allow
2345 # lib_LTLIBRARIES = libfoo.la libfoo.la
2346 # Diagnosing this case doesn't seem worth the plain (we'd
2347 # have to fill $instdirs on a per-condition basis, check
2348 # implied conditions, etc.)
2349 if (defined $instdirs{$lib} && $instdirs{$lib} ne $dir)
2350 {
2351 error ($where, "`$lib' is already going to be installed in "
2352 . "`$instdirs{$lib}'", partial => 1);
2353 error ($liblocations{$lib}, "`$lib' previously declared here");
2354 }
2355 else
2356 {
2357 $instdirs{$lib} = $dir;
2358 $liblocations{$lib} = $where->clone;
2359 }
2360 }
2361 }
2363 foreach my $pair (@liblist)
2364 {
2365 my ($where, $onelib) = @$pair;
2367 my $seen_libobjs = 0;
2368 my $obj = &get_object_extension ($onelib);
2370 # Canonicalize names and check for misspellings.
2371 my $xlib = &check_canonical_spelling ($onelib, '_LIBADD', '_LDFLAGS',
2372 '_SOURCES', '_OBJECTS',
2373 '_DEPENDENCIES');
2375 # Check that the library fits the standard naming convention.
2376 my $libname_rx = "^lib.*\.la";
2377 my $ldvar = var ("${xlib}_LDFLAGS") || var ('AM_LDFLAGS');
2378 my $ldvar2 = var ('LDFLAGS');
2379 if (($ldvar && grep (/-module/, $ldvar->value_as_list_recursive))
2380 || ($ldvar2 && grep (/-module/, $ldvar2->value_as_list_recursive)))
2381 {
2382 # Relax name checking for libtool modules.
2383 $libname_rx = "\.la";
2384 }
2385 if (basename ($onelib) !~ /$libname_rx$/)
2386 {
2387 msg ('error-gnu/warn', $where,
2388 "`$onelib' is not a standard libtool library name");
2389 }
2391 $where->push_context ("while processing Libtool library `$onelib'");
2392 $where->set (INTERNAL->get);
2394 # Make sure we at look at these.
2395 set_seen ($xlib . '_LDFLAGS');
2396 set_seen ($xlib . '_DEPENDENCIES');
2398 # Generate support for conditional object inclusion in
2399 # libraries.
2400 if (var ($xlib . '_LIBADD'))
2401 {
2402 if (&handle_lib_objects ($xlib, $xlib . '_LIBADD'))
2403 {
2404 $seen_libobjs = 1;
2405 }
2406 }
2407 else
2408 {
2409 &define_variable ($xlib . "_LIBADD", '', $where);
2410 }
2412 reject_var ("${xlib}_LDADD",
2413 "use `${xlib}_LIBADD', not `${xlib}_LDADD'");
2416 my $linker = &handle_source_transform ($xlib, $onelib, $obj, $where);
2418 # Determine program to use for link.
2419 my $xlink;
2420 if (var ($xlib . '_LINK'))
2421 {
2422 $xlink = $xlib . '_LINK';
2423 }
2424 else
2425 {
2426 $xlink = $linker ? $linker : 'LINK';
2427 }
2429 my $rpath;
2430 if ($instdirs{$onelib} eq 'EXTRA'
2431 || $instdirs{$onelib} eq 'noinst'
2432 || $instdirs{$onelib} eq 'check')
2433 {
2434 # It's an EXTRA_ library, so we can't specify -rpath,
2435 # because we don't know where the library will end up.
2436 # The user probably knows, but generally speaking automake
2437 # doesn't -- and in fact configure could decide
2438 # dynamically between two different locations.
2439 $rpath = '';
2440 }
2441 else
2442 {
2443 $rpath = ('-rpath $(' . $instdirs{$onelib} . 'dir)');
2444 }
2446 # If the resulting library lies into a subdirectory,
2447 # make sure this directory will exist.
2448 my $dirstamp = require_build_directory_maybe ($onelib);
2450 # Remember to cleanup .libs/ in this directory.
2451 my $dirname = dirname $onelib;
2452 $libtool_clean_directories{$dirname} = 1;
2454 $output_rules .= &file_contents ('ltlibrary',
2455 $where,
2456 LTLIBRARY => $onelib,
2457 XLTLIBRARY => $xlib,
2458 RPATH => $rpath,
2459 XLINK => $xlink,
2460 DIRSTAMP => $dirstamp);
2461 if ($seen_libobjs)
2462 {
2463 if (var ($xlib . '_LIBADD'))
2464 {
2465 &check_libobjs_sources ($xlib, $xlib . '_LIBADD');
2466 }
2467 }
2468 }
2469 }
2471 # See if any _SOURCES variable were misspelled.
2472 sub check_typos ()
2473 {
2474 # It is ok if the user sets this particular variable.
2475 set_seen 'AM_LDFLAGS';
2477 foreach my $var (variables)
2478 {
2479 my $varname = $var->name;
2480 # A configure variable is always legitimate.
2481 next if exists $configure_vars{$varname};
2483 my $check = 0;
2484 foreach my $primary ('_SOURCES', '_LIBADD', '_LDADD', '_LDFLAGS',
2485 '_DEPENDENCIES')
2486 {
2487 if ($varname =~ /$primary$/)
2488 {
2489 $check = 1;
2490 last;
2491 }
2492 }
2493 next unless $check;
2495 for my $cond ($var->conditions->conds)
2496 {
2497 msg_var 'syntax', $var, "unused variable: `$varname'"
2498 unless $var->rdef ($cond)->seen;
2499 }
2500 }
2501 }
2504 # Handle scripts.
2505 sub handle_scripts
2506 {
2507 # NOTE we no longer automatically clean SCRIPTS, because it is
2508 # useful to sometimes distribute scripts verbatim. This happens
2509 # e.g. in Automake itself.
2510 &am_install_var ('-candist', 'scripts', 'SCRIPTS',
2511 'bin', 'sbin', 'libexec', 'pkgdata',
2512 'noinst', 'check');
2513 }
2518 ## ------------------------ ##
2519 ## Handling Texinfo files. ##
2520 ## ------------------------ ##
2522 # ($OUTFILE, $VFILE, @CLEAN_FILES)
2523 # &scan_texinfo_file ($FILENAME)
2524 # ------------------------------
2525 # $OUTFILE - name of the info file produced by $FILENAME.
2526 # $VFILE - name of the version.texi file used (undef if none).
2527 # @CLEAN_FILES - list of byproducts (indexes etc.)
2528 sub scan_texinfo_file ($)
2529 {
2530 my ($filename) = @_;
2532 # Some of the following extensions are always created, no matter
2533 # whether indexes are used or not. Other (like cps, fns, ... pgs)
2534 # are only created when they are used. We used to scan $FILENAME
2535 # for their use, but that is not enough: they could be used in
2536 # included files. We can't scan included files because we don't
2537 # know the include path. Therefore we always erase these files, no
2538 # matter whether they are used or not.
2539 #
2540 # (tmp is only created if an @macro is used and a certain e-TeX
2541 # feature is not available.)
2542 my %clean_suffixes =
2543 map { $_ => 1 } (qw(aux log toc tmp
2544 cp cps
2545 fn fns
2546 ky kys
2547 vr vrs
2548 tp tps
2549 pg pgs)); # grep 'new.*index' texinfo.tex
2551 my $texi = new Automake::XFile "< $filename";
2552 verb "reading $filename";
2554 my ($outfile, $vfile);
2555 while ($_ = $texi->getline)
2556 {
2557 if (/^\@setfilename +(\S+)/)
2558 {
2559 # Honor only the first @setfilename. (It's possible to have
2560 # more occurrences later if the manual shows examples of how
2561 # to use @setfilename...)
2562 next if $outfile;
2564 $outfile = $1;
2565 if ($outfile =~ /\.(.+)$/ && $1 ne 'info')
2566 {
2567 error ("$filename:$.",
2568 "output `$outfile' has unrecognized extension");
2569 return;
2570 }
2571 }
2572 # A "version.texi" file is actually any file whose name matches
2573 # "vers*.texi".
2574 elsif (/^\@include\s+(vers[^.]*\.texi)\s*$/)
2575 {
2576 $vfile = $1;
2577 }
2579 # Try to find new or unused indexes.
2581 # Creating a new category of index.
2582 elsif (/^\@def(code)?index (\w+)/)
2583 {
2584 $clean_suffixes{$2} = 1;
2585 $clean_suffixes{"$2s"} = 1;
2586 }
2588 # Merging an index into an another.
2589 elsif (/^\@syn(code)?index (\w+) (\w+)/)
2590 {
2591 delete $clean_suffixes{"$2s"};
2592 $clean_suffixes{"$3s"} = 1;
2593 }
2595 }
2597 if ($outfile eq '')
2598 {
2599 err_am "`$filename' missing \@setfilename";
2600 return;
2601 }
2603 my $infobase = basename ($filename);
2604 $infobase =~ s/\.te?xi(nfo)?$//;
2605 return ($outfile, $vfile,
2606 map { "$infobase.$_" } (sort keys %clean_suffixes));
2607 }
2610 # ($DIRSTAMP, @CLEAN_FILES)
2611 # output_texinfo_build_rules ($SOURCE, $DEST, $INSRC, @DEPENDENCIES)
2612 # ------------------------------------------------------------------
2613 # SOURCE - the source Texinfo file
2614 # DEST - the destination Info file
2615 # INSRC - wether DEST should be built in the source tree
2616 # DEPENDENCIES - known dependencies
2617 sub output_texinfo_build_rules ($$$@)
2618 {
2619 my ($source, $dest, $insrc, @deps) = @_;
2621 # Split `a.texi' into `a' and `.texi'.
2622 my ($spfx, $ssfx) = ($source =~ /^(.*?)(\.[^.]*)?$/);
2623 my ($dpfx, $dsfx) = ($dest =~ /^(.*?)(\.[^.]*)?$/);
2625 $ssfx ||= "";
2626 $dsfx ||= "";
2628 # We can output two kinds of rules: the "generic" rules use Make
2629 # suffix rules and are appropriate when $source and $dest do not lie
2630 # in a sub-directory; the "specific" rules are needed in the other
2631 # case.
2632 #
2633 # The former are output only once (this is not really apparent here,
2634 # but just remember that some logic deeper in Automake will not
2635 # output the same rule twice); while the later need to be output for
2636 # each Texinfo source.
2637 my $generic;
2638 my $makeinfoflags;
2639 my $sdir = dirname $source;
2640 if ($sdir eq '.' && dirname ($dest) eq '.')
2641 {
2642 $generic = 1;
2643 $makeinfoflags = '-I $(srcdir)';
2644 }
2645 else
2646 {
2647 $generic = 0;
2648 $makeinfoflags = "-I $sdir -I \$(srcdir)/$sdir";
2649 }
2651 # A directory can contain two kinds of info files: some built in the
2652 # source tree, and some built in the build tree. The rules are
2653 # different in each case. However we cannot output two different
2654 # set of generic rules. Because in-source builds are more usual, we
2655 # use generic rules in this case and fall back to "specific" rules
2656 # for build-dir builds. (It should not be a problem to invert this
2657 # if needed.)
2658 $generic = 0 unless $insrc;
2660 # We cannot use a suffix rule to build info files with an empty
2661 # extension. Otherwise we would output a single suffix inference
2662 # rule, with separate dependencies, as in
2663 #
2664 # .texi:
2665 # $(MAKEINFO) ...
2666 # foo.info: foo.texi
2667 #
2668 # which confuse Solaris make. (See the Autoconf manual for
2669 # details.) Therefore we use a specific rule in this case. This
2670 # applies to info files only (dvi and pdf files always have an
2671 # extension).
2672 my $generic_info = ($generic && $dsfx) ? 1 : 0;
2674 # If the resulting file lie into a subdirectory,
2675 # make sure this directory will exist.
2676 my $dirstamp = require_build_directory_maybe ($dest);
2678 my $dipfx = ($insrc ? '$(srcdir)/' : '') . $dpfx;
2680 $output_rules .= file_contents ('texibuild',
2681 new Automake::Location,
2682 DEPS => "@deps",
2683 DEST_PREFIX => $dpfx,
2684 DEST_INFO_PREFIX => $dipfx,
2685 DEST_SUFFIX => $dsfx,
2686 DIRSTAMP => $dirstamp,
2687 GENERIC => $generic,
2688 GENERIC_INFO => $generic_info,
2689 INSRC => $insrc,
2690 MAKEINFOFLAGS => $makeinfoflags,
2691 SOURCE => ($generic
2692 ? '$<' : $source),
2693 SOURCE_INFO => ($generic_info
2694 ? '$<' : $source),
2695 SOURCE_REAL => $source,
2696 SOURCE_SUFFIX => $ssfx,
2697 );
2698 return ($dirstamp, "$dpfx.dvi", "$dpfx.pdf", "$dpfx.ps", "$dpfx.html");
2699 }
2702 # $TEXICLEANS
2703 # handle_texinfo_helper ($info_texinfos)
2704 # --------------------------------------
2705 # Handle all Texinfo source; helper for handle_texinfo.
2706 sub handle_texinfo_helper ($)
2707 {
2708 my ($info_texinfos) = @_;
2709 my (@infobase, @info_deps_list, @texi_deps);
2710 my %versions;
2711 my $done = 0;
2712 my @texi_cleans;
2714 # Build a regex matching user-cleaned files.
2715 my $d = var 'DISTCLEANFILES';
2716 my $c = var 'CLEANFILES';
2717 my @f = ();
2718 push @f, $d->value_as_list_recursive (inner_expand => 1) if $d;
2719 push @f, $c->value_as_list_recursive (inner_expand => 1) if $c;
2720 @f = map { s|[^A-Za-z_0-9*\[\]\-]|\\$&|g; s|\*|[^/]*|g; $_; } @f;
2721 my $user_cleaned_files = '^(?:' . join ('|', @f) . ')$';
2723 foreach my $texi
2724 ($info_texinfos->value_as_list_recursive (inner_expand => 1))
2725 {
2726 my $infobase = $texi;
2727 $infobase =~ s/\.(txi|texinfo|texi)$//;
2729 if ($infobase eq $texi)
2730 {
2731 # FIXME: report line number.
2732 err_am "texinfo file `$texi' has unrecognized extension";
2733 next;
2734 }
2736 push @infobase, $infobase;
2738 # If 'version.texi' is referenced by input file, then include
2739 # automatic versioning capability.
2740 my ($out_file, $vtexi, @clean_files) =
2741 scan_texinfo_file ("$relative_dir/$texi")
2742 or next;
2743 push (@texi_cleans, @clean_files);
2745 # If the Texinfo source is in a subdirectory, create the
2746 # resulting info in this subdirectory. If it is in the current
2747 # directory, try hard to not prefix "./" because it breaks the
2748 # generic rules.
2749 my $outdir = dirname ($texi) . '/';
2750 $outdir = "" if $outdir eq './';
2751 $out_file = $outdir . $out_file;
2753 # Until Automake 1.6.3, .info files were built in the
2754 # source tree. This was an obstacle to the support of
2755 # non-distributed .info files, and non-distributed .texi
2756 # files.
2757 #
2758 # * Non-distributed .texi files is important in some packages
2759 # where .texi files are built at make time, probably using
2760 # other binaries built in the package itself, maybe using
2761 # tools or information found on the build host. Because
2762 # these files are not distributed they are always rebuilt
2763 # at make time; they should therefore not lie in the source
2764 # directory. One plan was to support this using
2765 # nodist_info_TEXINFOS or something similar. (Doing this
2766 # requires some sanity checks. For instance Automake should
2767 # not allow:
2768 # dist_info_TEXINFO = foo.texi
2769 # nodist_foo_TEXINFO = included.texi
2770 # because a distributed file should never depend on a
2771 # non-distributed file.)
2772 #
2773 # * If .texi files are not distributed, then .info files should
2774 # not be distributed either. There are also cases where one
2775 # want to distribute .texi files, but do not want to
2776 # distribute the .info files. For instance the Texinfo package
2777 # distributes the tool used to build these files; it would
2778 # be a waste of space to distribute them. It's not clear
2779 # which syntax we should use to indicate that .info files should
2780 # not be distributed. Akim Demaille suggested that eventually
2781 # we switch to a new syntax:
2782 # | Maybe we should take some inspiration from what's already
2783 # | done in the rest of Automake. Maybe there is too much
2784 # | syntactic sugar here, and you want
2785 # | nodist_INFO = bar.info
2786 # | dist_bar_info_SOURCES = bar.texi
2787 # | bar_texi_DEPENDENCIES = foo.texi
2788 # | with a bit of magic to have bar.info represent the whole
2789 # | bar*info set. That's a lot more verbose that the current
2790 # | situation, but it is # not new, hence the user has less
2791 # | to learn.
2792 # |
2793 # | But there is still too much room for meaningless specs:
2794 # | nodist_INFO = bar.info
2795 # | dist_bar_info_SOURCES = bar.texi
2796 # | dist_PS = bar.ps something-written-by-hand.ps
2797 # | nodist_bar_ps_SOURCES = bar.texi
2798 # | bar_texi_DEPENDENCIES = foo.texi
2799 # | here bar.texi is dist_ in line 2, and nodist_ in 4.
2800 #
2801 # Back to the point, it should be clear that in order to support
2802 # non-distributed .info files, we need to build them in the
2803 # build tree, not in the source tree (non-distributed .texi
2804 # files are less of a problem, because we do not output build
2805 # rules for them). In Automake 1.7 .info build rules have been
2806 # largely cleaned up so that .info files get always build in the
2807 # build tree, even when distributed. The idea was that
2808 # (1) if during a VPATH build the .info file was found to be
2809 # absent or out-of-date (in the source tree or in the
2810 # build tree), Make would rebuild it in the build tree.
2811 # If an up-to-date source-tree of the .info file existed,
2812 # make would not rebuild it in the build tree.
2813 # (2) having two copies of .info files, one in the source tree
2814 # and one (newer) in the build tree is not a problem
2815 # because `make dist' always pick files in the build tree
2816 # first.
2817 # However it turned out the be a bad idea for several reasons:
2818 # * Tru64, OpenBSD, and FreeBSD (not NetBSD) Make do behave
2819 # like GNU Make on point (1) above. These implementations
2820 # of Make would always rebuild .info files in the build
2821 # tree, even if such files were up to date in the source
2822 # tree. Consequently, it was impossible the perform a VPATH
2823 # build of a package containing Texinfo files using these
2824 # Make implementations.
2825 # (Refer to the Autoconf Manual, section "Limitation of
2826 # Make", paragraph "VPATH", item "target lookup", for
2827 # an account of the differences between these
2828 # implementations.)
2829 # * The GNU Coding Standards require these files to be built
2830 # in the source-tree (when they are distributed, that is).
2831 # * Keeping a fresher copy of distributed files in the
2832 # build tree can be annoying during development because
2833 # - if the files is kept under CVS, you really want it
2834 # to be updated in the source tree
2835 # - it os confusing that `make distclean' does not erase
2836 # all files in the build tree.
2837 #
2838 # Consequently, starting with Automake 1.8, .info files are
2839 # built in the source tree again. Because we still plan to
2840 # support non-distributed .info files at some point, we
2841 # have a single variable ($INSRC) that controls whether
2842 # the current .info file must be built in the source tree
2843 # or in the build tree. Actually this variable is switched
2844 # off for .info files that appear to be cleaned; this is
2845 # for backward compatibility with package such as Texinfo,
2846 # which do things like
2847 # info_TEXINFOS = texinfo.txi info-stnd.texi info.texi
2848 # DISTCLEANFILES = texinfo texinfo-* info*.info*
2849 # # Do not create info files for distribution.
2850 # dist-info:
2851 # in order not to distribute .info files.
2852 my $insrc = ($out_file =~ $user_cleaned_files) ? 0 : 1;
2854 my $soutdir = '$(srcdir)/' . $outdir;
2855 $outdir = $soutdir if $insrc;
2857 # If user specified file_TEXINFOS, then use that as explicit
2858 # dependency list.
2859 @texi_deps = ();
2860 push (@texi_deps, "$soutdir$vtexi") if $vtexi;
2862 my $canonical = canonicalize ($infobase);
2863 if (var ($canonical . "_TEXINFOS"))
2864 {
2865 push (@texi_deps, '$(' . $canonical . '_TEXINFOS)');
2866 push_dist_common ('$(' . $canonical . '_TEXINFOS)');
2867 }
2869 my ($dirstamp, @cfiles) =
2870 output_texinfo_build_rules ($texi, $out_file, $insrc, @texi_deps);
2871 push (@texi_cleans, @cfiles);
2873 push (@info_deps_list, $out_file);
2875 # If a vers*.texi file is needed, emit the rule.
2876 if ($vtexi)
2877 {
2878 err_am ("`$vtexi', included in `$texi', "
2879 . "also included in `$versions{$vtexi}'")
2880 if defined $versions{$vtexi};
2881 $versions{$vtexi} = $texi;
2883 # We number the stamp-vti files. This is doable since the
2884 # actual names don't matter much. We only number starting
2885 # with the second one, so that the common case looks nice.
2886 my $vti = ($done ? $done : 'vti');
2887 ++$done;
2889 # This is ugly, but it is our historical practice.
2890 if ($config_aux_dir_set_in_configure_in)
2891 {
2892 require_conf_file_with_macro (TRUE, 'info_TEXINFOS', FOREIGN,
2893 'mdate-sh');
2894 }
2895 else
2896 {
2897 require_file_with_macro (TRUE, 'info_TEXINFOS',
2898 FOREIGN, 'mdate-sh');
2899 }
2901 my $conf_dir;
2902 if ($config_aux_dir_set_in_configure_in)
2903 {
2904 $conf_dir = $config_aux_dir;
2905 $conf_dir .= '/' unless $conf_dir =~ /\/$/;
2906 }
2907 else
2908 {
2909 $conf_dir = '$(srcdir)/';
2910 }
2911 $output_rules .= file_contents ('texi-vers',
2912 new Automake::Location,
2913 TEXI => $texi,
2914 VTI => $vti,
2915 STAMPVTI => "${soutdir}stamp-$vti",
2916 VTEXI => "$soutdir$vtexi",
2917 MDDIR => $conf_dir,
2918 DIRSTAMP => $dirstamp);
2919 }
2920 }
2922 # Handle location of texinfo.tex.
2923 my $need_texi_file = 0;
2924 my $texinfodir;
2925 if (var ('TEXINFO_TEX'))
2926 {
2927 # The user defined TEXINFO_TEX so assume he knows what he is
2928 # doing.
2929 $texinfodir = ('$(srcdir)/'
2930 . dirname (variable_value ('TEXINFO_TEX')));
2931 }
2932 elsif (option 'cygnus')
2933 {
2934 $texinfodir = '$(top_srcdir)/../texinfo';
2935 define_variable ('TEXINFO_TEX', "$texinfodir/texinfo.tex", INTERNAL);
2936 }
2937 elsif ($config_aux_dir_set_in_configure_in)
2938 {
2939 $texinfodir = $config_aux_dir;
2940 define_variable ('TEXINFO_TEX', "$texinfodir/texinfo.tex", INTERNAL);
2941 $need_texi_file = 2; # so that we require_conf_file later
2942 }
2943 else
2944 {
2945 $texinfodir = '$(srcdir)';
2946 $need_texi_file = 1;
2947 }
2948 define_variable ('am__TEXINFO_TEX_DIR', $texinfodir, INTERNAL);
2950 push (@dist_targets, 'dist-info');
2952 if (! option 'no-installinfo')
2953 {
2954 # Make sure documentation is made and installed first. Use
2955 # $(INFO_DEPS), not 'info', because otherwise recursive makes
2956 # get run twice during "make all".
2957 unshift (@all, '$(INFO_DEPS)');
2958 }
2960 define_files_variable ("DVIS", @infobase, 'dvi', INTERNAL);
2961 define_files_variable ("PDFS", @infobase, 'pdf', INTERNAL);
2962 define_files_variable ("PSS", @infobase, 'ps', INTERNAL);
2963 define_files_variable ("HTMLS", @infobase, 'html', INTERNAL);
2965 # This next isn't strictly needed now -- the places that look here
2966 # could easily be changed to look in info_TEXINFOS. But this is
2967 # probably better, in case noinst_TEXINFOS is ever supported.
2968 define_variable ("TEXINFOS", variable_value ('info_TEXINFOS'), INTERNAL);
2970 # Do some error checking. Note that this file is not required
2971 # when in Cygnus mode; instead we defined TEXINFO_TEX explicitly
2972 # up above.
2973 if ($need_texi_file && ! option 'no-texinfo.tex')
2974 {
2975 if ($need_texi_file > 1)
2976 {
2977 require_conf_file_with_macro (TRUE, 'info_TEXINFOS', FOREIGN,
2978 'texinfo.tex');
2979 }
2980 else
2981 {
2982 require_file_with_macro (TRUE, 'info_TEXINFOS', FOREIGN,
2983 'texinfo.tex');
2984 }
2985 }
2987 return makefile_wrap ("", "\t ", @texi_cleans);
2988 }
2991 # handle_texinfo ()
2992 # -----------------
2993 # Handle all Texinfo source.
2994 sub handle_texinfo ()
2995 {
2996 reject_var 'TEXINFOS', "`TEXINFOS' is an anachronism; use `info_TEXINFOS'";
2997 # FIXME: I think this is an obsolete future feature name.
2998 reject_var 'html_TEXINFOS', "HTML generation not yet supported";
3000 my $info_texinfos = var ('info_TEXINFOS');
3001 my $texiclean = "";
3002 if ($info_texinfos)
3003 {
3004 $texiclean = handle_texinfo_helper ($info_texinfos);
3005 }
3006 $output_rules .= file_contents ('texinfos',
3007 new Automake::Location,
3008 TEXICLEAN => $texiclean,
3009 'LOCAL-TEXIS' => !!$info_texinfos);
3010 }
3013 # Handle any man pages.
3014 sub handle_man_pages
3015 {
3016 reject_var 'MANS', "`MANS' is an anachronism; use `man_MANS'";
3018 # Find all the sections in use. We do this by first looking for
3019 # "standard" sections, and then looking for any additional
3020 # sections used in man_MANS.
3021 my (%sections, %vlist);
3022 # We handle nodist_ for uniformity. man pages aren't distributed
3023 # by default so it isn't actually very important.
3024 foreach my $pfx ('', 'dist_', 'nodist_')
3025 {
3026 # Add more sections as needed.
3027 foreach my $section ('0'..'9', 'n', 'l')
3028 {
3029 my $varname = $pfx . 'man' . $section . '_MANS';
3030 if (var ($varname))
3031 {
3032 $sections{$section} = 1;
3033 $varname = '$(' . $varname . ')';
3034 $vlist{$varname} = 1;
3036 &push_dist_common ($varname)
3037 if $pfx eq 'dist_';
3038 }
3039 }
3041 my $varname = $pfx . 'man_MANS';
3042 my $var = var ($varname);
3043 if ($var)
3044 {
3045 foreach ($var->value_as_list_recursive)
3046 {
3047 # A page like `foo.1c' goes into man1dir.
3048 if (/\.([0-9a-z])([a-z]*)$/)
3049 {
3050 $sections{$1} = 1;
3051 }
3052 }
3054 $varname = '$(' . $varname . ')';
3055 $vlist{$varname} = 1;
3056 &push_dist_common ($varname)
3057 if $pfx eq 'dist_';
3058 }
3059 }
3061 return unless %sections;
3063 # Now for each section, generate an install and uninstall rule.
3064 # Sort sections so output is deterministic.
3065 foreach my $section (sort keys %sections)
3066 {
3067 $output_rules .= &file_contents ('mans',
3068 new Automake::Location,
3069 SECTION => $section);
3070 }
3072 my @mans = sort keys %vlist;
3073 $output_vars .= file_contents ('mans-vars',
3074 new Automake::Location,
3075 MANS => "@mans");
3077 push (@all, '$(MANS)')
3078 unless option 'no-installman';
3079 }
3081 # Handle DATA variables.
3082 sub handle_data
3083 {
3084 &am_install_var ('-noextra', '-candist', 'data', 'DATA',
3085 'data', 'sysconf', 'sharedstate', 'localstate',
3086 'pkgdata', 'lisp', 'noinst', 'check');
3087 }
3089 # Handle TAGS.
3090 sub handle_tags
3091 {
3092 my @tag_deps = ();
3093 my @ctag_deps = ();
3094 if (var ('SUBDIRS'))
3095 {
3096 $output_rules .= ("tags-recursive:\n"
3097 . "\tlist=\'\$(SUBDIRS)\'; for subdir in \$\$list; do \\\n"
3098 # Never fail here if a subdir fails; it
3099 # isn't important.
3100 . "\t test \"\$\$subdir\" = . || (cd \$\$subdir"
3101 . " && \$(MAKE) \$(AM_MAKEFLAGS) tags); \\\n"
3102 . "\tdone\n");
3103 push (@tag_deps, 'tags-recursive');
3104 &depend ('.PHONY', 'tags-recursive');
3106 $output_rules .= ("ctags-recursive:\n"
3107 . "\tlist=\'\$(SUBDIRS)\'; for subdir in \$\$list; do \\\n"
3108 # Never fail here if a subdir fails; it
3109 # isn't important.
3110 . "\t test \"\$\$subdir\" = . || (cd \$\$subdir"
3111 . " && \$(MAKE) \$(AM_MAKEFLAGS) ctags); \\\n"
3112 . "\tdone\n");
3113 push (@ctag_deps, 'ctags-recursive');
3114 &depend ('.PHONY', 'ctags-recursive');
3115 }
3117 if (&saw_sources_p (1)
3118 || var ('ETAGS_ARGS')
3119 || @tag_deps)
3120 {
3121 my @config;
3122 foreach my $spec (@config_headers)
3123 {
3124 my ($out, @ins) = split_config_file_spec ($spec);
3125 foreach my $in (@ins)
3126 {
3127 # If the config header source is in this directory,
3128 # require it.
3129 push @config, basename ($in)
3130 if $relative_dir eq dirname ($in);
3131 }
3132 }
3133 $output_rules .= &file_contents ('tags',
3134 new Automake::Location,
3135 CONFIG => "@config",
3136 TAGSDIRS => "@tag_deps",
3137 CTAGSDIRS => "@ctag_deps");
3139 set_seen 'TAGS_DEPENDENCIES';
3140 }
3141 elsif (reject_var ('TAGS_DEPENDENCIES',
3142 "doesn't make sense to define `TAGS_DEPENDENCIES'"
3143 . "without\nsources or `ETAGS_ARGS'"))
3144 {
3145 }
3146 else
3147 {
3148 # Every Makefile must define some sort of TAGS rule.
3149 # Otherwise, it would be possible for a top-level "make TAGS"
3150 # to fail because some subdirectory failed.
3151 $output_rules .= "tags: TAGS\nTAGS:\n\n";
3152 # Ditto ctags.
3153 $output_rules .= "ctags: CTAGS\nCTAGS:\n\n";
3154 }
3155 }
3157 # Handle multilib support.
3158 sub handle_multilib
3159 {
3160 if ($seen_multilib && $relative_dir eq '.')
3161 {
3162 $output_rules .= &file_contents ('multilib', new Automake::Location);
3163 push (@all, 'all-multi');
3164 }
3165 }
3168 # $BOOLEAN
3169 # &for_dist_common ($A, $B)
3170 # -------------------------
3171 # Subroutine for &handle_dist: sort files to dist.
3172 #
3173 # We put README first because it then becomes easier to make a
3174 # Usenet-compliant shar file (in these, README must be first).
3175 #
3176 # FIXME: do more ordering of files here.
3177 sub for_dist_common
3178 {
3179 return 0
3180 if $a eq $b;
3181 return -1
3182 if $a eq 'README';
3183 return 1
3184 if $b eq 'README';
3185 return $a cmp $b;
3186 }
3189 # handle_dist
3190 # -----------
3191 # Handle 'dist' target.
3192 sub handle_dist ()
3193 {
3194 return if option 'no-dist';
3196 # At least one of the archive formats must be enabled.
3197 if ($relative_dir eq '.')
3198 {
3199 my $archive_defined = option 'no-dist-gzip' ? 0 : 1;
3200 $archive_defined ||=
3201 grep { option "dist-$_" } ('shar', 'zip', 'tarZ', 'bzip2');
3202 error (option 'no-dist-gzip',
3203 "no-dist-gzip specified but no dist-* specified, "
3204 . "at least one archive format must be enabled")
3205 unless $archive_defined;
3206 }
3208 # Look for common files that should be included in distribution.
3209 # If the aux dir is set, and it does not have a Makefile.am, then
3210 # we check for these files there as well.
3211 my $check_aux = 0;
3212 my $auxdir = '';
3213 if ($relative_dir eq '.'
3214 && $config_aux_dir_set_in_configure_in)
3215 {
3216 ($auxdir = $config_aux_dir) =~ s,^\$\(top_srcdir\)/,,;
3217 if (! &is_make_dir ($auxdir))
3218 {
3219 $check_aux = 1;
3220 }
3221 }
3222 foreach my $cfile (@common_files)
3223 {
3224 if (-f ($relative_dir . "/" . $cfile)
3225 # The file might be absent, but if it can be built it's ok.
3226 || rule $cfile)
3227 {
3228 &push_dist_common ($cfile);
3229 }
3231 # Don't use `elsif' here because a file might meaningfully
3232 # appear in both directories.
3233 if ($check_aux && -f ($auxdir . '/' . $cfile))
3234 {
3235 &push_dist_common ($auxdir . '/' . $cfile);
3236 }
3237 }
3239 # We might copy elements from $configure_dist_common to
3240 # %dist_common if we think we need to. If the file appears in our
3241 # directory, we would have discovered it already, so we don't
3242 # check that. But if the file is in a subdir without a Makefile,
3243 # we want to distribute it here if we are doing `.'. Ugly!
3244 if ($relative_dir eq '.')
3245 {
3246 foreach my $file (split (' ' , $configure_dist_common))
3247 {
3248 push_dist_common ($file)
3249 unless is_make_dir (dirname ($file));
3250 }
3251 }
3253 # Files to distributed. Don't use ->value_as_list_recursive
3254 # as it recursively expands `$(dist_pkgdata_DATA)' etc.
3255 my @dist_common = split (' ', rvar ('DIST_COMMON')->variable_value);
3256 @dist_common = uniq (sort for_dist_common (@dist_common));
3257 variable_delete 'DIST_COMMON';
3258 define_pretty_variable ('DIST_COMMON', TRUE, INTERNAL, @dist_common);
3260 # Now that we've processed DIST_COMMON, disallow further attempts
3261 # to set it.
3262 $handle_dist_run = 1;
3264 # Scan EXTRA_DIST to see if we need to distribute anything from a
3265 # subdir. If so, add it to the list. I didn't want to do this
3266 # originally, but there were so many requests that I finally
3267 # relented.
3268 my $extra_dist = var ('EXTRA_DIST');
3269 if ($extra_dist)
3270 {
3271 # FIXME: This should be fixed to work with conditions. That
3272 # will require only making the entries in %dist_dirs under the
3273 # appropriate condition. This is meaningful if the nature of
3274 # the distribution should depend upon the configure options
3275 # used.
3276 foreach ($extra_dist->value_as_list_recursive)
3277 {
3278 next if /^\@.*\@$/;
3279 next unless s,/+[^/]+$,,;
3280 $dist_dirs{$_} = 1
3281 unless $_ eq '.';
3282 }
3283 }
3285 # We have to check DIST_COMMON for extra directories in case the
3286 # user put a source used in AC_OUTPUT into a subdir.
3287 my $topsrcdir = backname ($relative_dir);
3288 foreach (rvar ('DIST_COMMON')->value_as_list_recursive)
3289 {
3290 next if /^\@.*\@$/;
3291 s/\$\(top_srcdir\)/$topsrcdir/;
3292 s/\$\(srcdir\)/./;
3293 # Strip any leading `./'.
3294 s,^(:?\./+)*,,;
3295 next unless s,/+[^/]+$,,;
3296 $dist_dirs{$_} = 1
3297 unless $_ eq '.';
3298 }
3300 # Rule to check whether a distribution is viable.
3301 my %transform = ('DISTCHECK-HOOK' => !! rule 'distcheck-hook',
3302 'GETTEXT' => $seen_gettext && !$seen_gettext_external);
3304 # Prepend $(distdir) to each directory given.
3305 my %rewritten = map { '$(distdir)/' . "$_" => 1 } keys %dist_dirs;
3306 $transform{'DISTDIRS'} = join (' ', sort keys %rewritten);
3308 # If we have SUBDIRS, create all dist subdirectories and do
3309 # recursive build.
3310 my $subdirs = var ('SUBDIRS');
3311 if ($subdirs)
3312 {
3313 # If SUBDIRS is conditionally defined, then set DIST_SUBDIRS
3314 # to all possible directories, and use it. If DIST_SUBDIRS is
3315 # defined, just use it.
3316 my $dist_subdir_name;
3317 # Note that we check DIST_SUBDIRS first on purpose, so that
3318 # we don't call has_conditional_contents for now reason.
3319 # (In the past one project used so many conditional subdirectories
3320 # that calling has_conditional_contents on SUBDIRS caused
3321 # automake to grow to 150Mb -- this should not happen with
3322 # the current implementation of has_conditional_contents,
3323 # but it's more efficient to avoid the call anyway.)
3324 if (var ('DIST_SUBDIRS'))
3325 {
3326 $dist_subdir_name = 'DIST_SUBDIRS';
3327 }
3328 elsif ($subdirs->has_conditional_contents)
3329 {
3330 $dist_subdir_name = 'DIST_SUBDIRS';
3331 define_pretty_variable
3332 ('DIST_SUBDIRS', TRUE, INTERNAL,
3333 uniq ($subdirs->value_as_list_recursive));
3334 }
3335 else
3336 {
3337 $dist_subdir_name = 'SUBDIRS';
3338 # We always define this because that is what `distclean'
3339 # wants.
3340 define_pretty_variable ('DIST_SUBDIRS', TRUE, INTERNAL,
3341 '$(SUBDIRS)');
3342 }
3344 $transform{'DIST_SUBDIR_NAME'} = $dist_subdir_name;
3345 }
3347 # If the target `dist-hook' exists, make sure it is run. This
3348 # allows users to do random weird things to the distribution
3349 # before it is packaged up.
3350 push (@dist_targets, 'dist-hook')
3351 if rule 'dist-hook';
3352 $transform{'DIST-TARGETS'} = join(' ', @dist_targets);
3354 $output_rules .= &file_contents ('distdir',
3355 new Automake::Location,
3356 %transform);
3357 }
3360 # &handle_subdirs ()
3361 # ------------------
3362 # Handle subdirectories.
3363 sub handle_subdirs ()
3364 {
3365 my $subdirs = var ('SUBDIRS');
3366 return
3367 unless $subdirs;
3369 my @subdirs = $subdirs->value_as_list_recursive;
3370 my @dsubdirs = ();
3371 my $dsubdirs = var ('DIST_SUBDIRS');
3372 @dsubdirs = $dsubdirs->value_as_list_recursive
3373 if $dsubdirs;
3375 # If an `obj/' directory exists, BSD make will enter it before
3376 # reading `Makefile'. Hence the `Makefile' in the current directory
3377 # will not be read.
3378 #
3379 # % cat Makefile
3380 # all:
3381 # echo Hello
3382 # % cat obj/Makefile
3383 # all:
3384 # echo World
3385 # % make # GNU make
3386 # echo Hello
3387 # Hello
3388 # % pmake # BSD make
3389 # echo World
3390 # World
3391 msg_var ('portability', 'SUBDIRS',
3392 "naming a subdirectory `obj' causes troubles with BSD make")
3393 if grep ($_ eq 'obj', @subdirs);
3394 msg_var ('portability', 'DIST_SUBDIRS',
3395 "naming a subdirectory `obj' causes troubles with BSD make")
3396 if grep ($_ eq 'obj', @dsubdirs);
3398 # Make sure each directory mentioned in SUBDIRS actually exists.
3399 foreach my $dir (@subdirs)
3400 {
3401 # Skip directories substituted by configure.
3402 next if $dir =~ /^\@.*\@$/;
3404 if (! -d $relative_dir . '/' . $dir)
3405 {
3406 err_var ('SUBDIRS', "required directory $relative_dir/$dir "
3407 . "does not exist");
3408 next;
3409 }
3411 err_var 'SUBDIRS', "directory should not contain `/'"
3412 if $dir =~ /\//;
3413 }
3415 $output_rules .= &file_contents ('subdirs', new Automake::Location);
3416 rvar ('RECURSIVE_TARGETS')->rdef (TRUE)->{'pretty'} = VAR_SORTED; # Gross!
3417 }
3420 # ($REGEN, @DEPENDENCIES)
3421 # &scan_aclocal_m4
3422 # ----------------
3423 # If aclocal.m4 creation is automated, return the list of its dependencies.
3424 sub scan_aclocal_m4 ()
3425 {
3426 my $regen_aclocal = 0;
3428 set_seen 'CONFIG_STATUS_DEPENDENCIES';
3429 set_seen 'CONFIGURE_DEPENDENCIES';
3431 if (-f 'aclocal.m4')
3432 {
3433 &define_variable ("ACLOCAL_M4", '$(top_srcdir)/aclocal.m4', INTERNAL);
3435 my $aclocal = new Automake::XFile "< aclocal.m4";
3436 my $line = $aclocal->getline;
3437 $regen_aclocal = $line =~ 'generated automatically by aclocal';
3438 }
3440 my @ac_deps = ();
3442 if (set_seen ('ACLOCAL_M4_SOURCES'))
3443 {
3444 push (@ac_deps, '$(ACLOCAL_M4_SOURCES)');
3445 msg_var ('obsolete', 'ACLOCAL_M4_SOURCES',
3446 "`ACLOCAL_M4_SOURCES' is obsolete.\n"
3447 . "It should be safe to simply remove it.");
3448 }
3450 # Note that it might be possible that aclocal.m4 doesn't exist but
3451 # should be auto-generated. This case probably isn't very
3452 # important.
3454 return ($regen_aclocal, @ac_deps);
3455 }
3458 # @DEPENDENCIES
3459 # &prepend_srcdir (@INPUTS)
3460 # -------------------------
3461 # Prepend $(srcdir) or $(top_srcdir) to all @INPUTS. The idea is that
3462 # if an input file has a directory part the same as the current
3463 # directory, then the directory part is simply replaced by $(srcdir).
3464 # But if the directory part is different, then $(top_srcdir) is
3465 # prepended.
3466 sub prepend_srcdir (@)
3467 {
3468 my (@inputs) = @_;
3469 my @newinputs;
3471 foreach my $single (@inputs)
3472 {
3473 if (dirname ($single) eq $relative_dir)
3474 {
3475 push (@newinputs, '$(srcdir)/' . basename ($single));
3476 }
3477 else
3478 {
3479 push (@newinputs, '$(top_srcdir)/' . $single);
3480 }
3481 }
3482 return @newinputs;
3483 }
3485 # @DEPENDENCIES
3486 # rewrite_inputs_into_dependencies ($OUTPUT, @INPUTS)
3487 # ---------------------------------------------------
3488 # Compute a list of dependencies appropriate for the rebuild
3489 # rule of
3490 # AC_CONFIG_FILES($OUTPUT:$INPUT[0]:$INPUTS[1]:...)
3491 # Also distribute $INPUTs which are not build by another AC_CONFIG_FILES.
3492 sub rewrite_inputs_into_dependencies ($@)
3493 {
3494 my ($file, @inputs) = @_;
3495 my @res = ();
3497 for my $i (@inputs)
3498 {
3499 if (exists $ac_config_files_location{$i})
3500 {
3501 my $di = dirname $i;
3502 if ($di eq $relative_dir)
3503 {
3504 $i = basename $i;
3505 }
3506 # In the top-level Makefile we do not use $(top_builddir), because
3507 # we are already there, and since the targets are built without
3508 # a $(top_builddir), it helps BSD Make to match them with
3509 # dependencies.
3510 elsif ($relative_dir ne '.')
3511 {
3512 $i = '$(top_builddir)/' . $i;
3513 }
3514 }
3515 else
3516 {
3517 msg ('error', $ac_config_files_location{$file},
3518 "required file `$i' not found")
3519 unless exists $output_files{$i} || -f $i;
3520 ($i) = prepend_srcdir ($i);
3521 push_dist_common ($i);
3522 }
3523 push @res, $i;
3524 }
3525 return @res;
3526 }
3530 # &handle_configure ($MAKEFILE_AM, $MAKEFILE_IN, $MAKEFILE, @INPUTS)
3531 # ------------------------------------------------------------------
3532 # Handle remaking and configure stuff.
3533 # We need the name of the input file, to do proper remaking rules.
3534 sub handle_configure ($$$@)
3535 {
3536 my ($makefile_am, $makefile_in, $makefile, @inputs) = @_;
3538 prog_error 'empty @inputs'
3539 unless @inputs;
3541 my ($rel_makefile_am, $rel_makefile_in) = prepend_srcdir ($makefile_am,
3542 $makefile_in);
3543 my $rel_makefile = basename $makefile;
3545 my $colon_infile = ':' . join (':', @inputs);
3546 $colon_infile = '' if $colon_infile eq ":$makefile.in";
3547 my @rewritten = rewrite_inputs_into_dependencies ($makefile, @inputs);
3548 my ($regen_aclocal_m4, @aclocal_m4_deps) = scan_aclocal_m4;
3549 define_pretty_variable ('am__aclocal_m4_deps', TRUE, INTERNAL,
3550 @configure_deps, @aclocal_m4_deps,
3551 '$(top_srcdir)/' . $configure_ac);
3552 my @configuredeps = ('$(am__aclocal_m4_deps)', '$(CONFIGURE_DEPENDENCIES)');
3553 push @configuredeps, '$(ACLOCAL_M4)' if -f 'aclocal.m4';
3554 define_pretty_variable ('am__configure_deps', TRUE, INTERNAL,
3555 @configuredeps);
3557 $output_rules .= file_contents
3558 ('configure',
3559 new Automake::Location,
3560 MAKEFILE => $rel_makefile,
3561 'MAKEFILE-DEPS' => "@rewritten",
3562 'CONFIG-MAKEFILE' => ($relative_dir eq '.') ? '$@' : '$(subdir)/$@',
3563 'MAKEFILE-IN' => $rel_makefile_in,
3564 'MAKEFILE-IN-DEPS' => "@include_stack",
3565 'MAKEFILE-AM' => $rel_makefile_am,
3566 STRICTNESS => global_option 'cygnus'
3567 ? 'cygnus' : $strictness_name,
3568 'USE-DEPS' => global_option 'no-dependencies'
3569 ? ' --ignore-deps' : '',
3570 'MAKEFILE-AM-SOURCES' => "$makefile$colon_infile",
3571 'REGEN-ACLOCAL-M4' => $regen_aclocal_m4);
3573 if ($relative_dir eq '.')
3574 {
3575 &push_dist_common ('acconfig.h')
3576 if -f 'acconfig.h';
3577 }
3579 # If we have a configure header, require it.
3580 my $hdr_index = 0;
3581 my @distclean_config;
3582 foreach my $spec (@config_headers)
3583 {
3584 $hdr_index += 1;
3585 # $CONFIG_H_PATH: config.h from top level.
3586 my ($config_h_path, @ins) = split_config_file_spec ($spec);
3587 my $config_h_dir = dirname ($config_h_path);
3589 # If the header is in the current directory we want to build
3590 # the header here. Otherwise, if we're at the topmost
3591 # directory and the header's directory doesn't have a
3592 # Makefile, then we also want to build the header.
3593 if ($relative_dir eq $config_h_dir
3594 || ($relative_dir eq '.' && ! &is_make_dir ($config_h_dir)))
3595 {
3596 my ($cn_sans_dir, $stamp_dir);
3597 if ($relative_dir eq $config_h_dir)
3598 {
3599 $cn_sans_dir = basename ($config_h_path);
3600 $stamp_dir = '';
3601 }
3602 else
3603 {
3604 $cn_sans_dir = $config_h_path;
3605 if ($config_h_dir eq '.')
3606 {
3607 $stamp_dir = '';
3608 }
3609 else
3610 {
3611 $stamp_dir = $config_h_dir . '/';
3612 }
3613 }
3615 # This will also distribute all inputs.
3616 @ins = rewrite_inputs_into_dependencies ($config_h_path, @ins);
3618 # Header defined and in this directory.
3619 my @files;
3620 if (-f $config_h_path . '.top')
3621 {
3622 push (@files, "$cn_sans_dir.top");
3623 }
3624 if (-f $config_h_path . '.bot')
3625 {
3626 push (@files, "$cn_sans_dir.bot");
3627 }
3629 push_dist_common (@files);
3631 # For now, acconfig.h can only appear in the top srcdir.
3632 if (-f 'acconfig.h')
3633 {
3634 push (@files, '$(top_srcdir)/acconfig.h');
3635 }
3637 my $stamp = "${stamp_dir}stamp-h${hdr_index}";
3638 $output_rules .=
3639 file_contents ('remake-hdr',
3640 new Automake::Location,
3641 FILES => "@files",
3642 CONFIG_H => $cn_sans_dir,
3643 CONFIG_HIN => $ins[0],
3644 CONFIG_H_DEPS => "@ins",
3645 CONFIG_H_PATH => $config_h_path,
3646 FIRST_CONFIG_HIN => ($hdr_index == 1),
3647 STAMP => "$stamp");
3649 push @distclean_config, $cn_sans_dir, $stamp;
3650 }
3651 }
3653 $output_rules .= file_contents ('clean-hdr',
3654 new Automake::Location,
3655 FILES => "@distclean_config")
3656 if @distclean_config;
3658 # Distribute and define mkinstalldirs only if it is already present
3659 # in the package, for backward compatibility (some people my still
3660 # use $(mkinstalldirs)).
3661 my $mkidpath = $config_aux_path[0] . '/mkinstalldirs';
3662 if (-f $mkidpath)
3663 {
3664 # Use require_file so that any existingscript gets updated
3665 # by --force-missing.
3666 require_conf_file ($mkidpath, FOREIGN, 'mkinstalldirs');
3667 define_variable ('mkinstalldirs',
3668 "\$(SHELL) $config_aux_dir/mkinstalldirs", INTERNAL);
3669 }
3670 else
3671 {
3672 define_variable ('mkinstalldirs', '$(mkdir_p)', INTERNAL);
3673 }
3675 reject_var ('CONFIG_HEADER',
3676 "`CONFIG_HEADER' is an anachronism; now determined "
3677 . "automatically\nfrom `$configure_ac'");
3679 my @config_h;
3680 foreach my $spec (@config_headers)
3681 {
3682 my ($out, @ins) = split_config_file_spec ($spec);
3683 # Generate CONFIG_HEADER define.
3684 if ($relative_dir eq dirname ($out))
3685 {
3686 push @config_h, basename ($out);
3687 }
3688 else
3689 {
3690 push @config_h, "\$(top_builddir)/$out";
3691 }
3692 }
3693 define_variable ("CONFIG_HEADER", "@config_h", INTERNAL)
3694 if @config_h;
3696 # Now look for other files in this directory which must be remade
3697 # by config.status, and generate rules for them.
3698 my @actual_other_files = ();
3699 foreach my $lfile (@other_input_files)
3700 {
3701 my $file;
3702 my @inputs;
3703 if ($lfile =~ /^([^:]*):(.*)$/)
3704 {
3705 # This is the ":" syntax of AC_OUTPUT.
3706 $file = $1;
3707 @inputs = split (':', $2);
3708 }
3709 else
3710 {
3711 # Normal usage.
3712 $file = $lfile;
3713 @inputs = $file . '.in';
3714 }
3716 # Automake files should not be stored in here, but in %MAKE_LIST.
3717 prog_error ("$lfile in \@other_input_files\n"
3718 . "\@other_input_files = (@other_input_files)")
3719 if -f $file . '.am';
3721 my $local = basename ($file);
3723 # Make sure the dist directory for each input file is created.
3724 # We only have to do this at the topmost level though. This
3725 # is a bit ugly but it easier than spreading out the logic,
3726 # especially in cases like AC_OUTPUT(foo/out:bar/in), where
3727 # there is no Makefile in bar/.
3728 if ($relative_dir eq '.')
3729 {
3730 foreach (@inputs)
3731 {
3732 $dist_dirs{dirname ($_)} = 1;
3733 }
3734 }
3736 # We skip files that aren't in this directory. However, if
3737 # the file's directory does not have a Makefile, and we are
3738 # currently doing `.', then we create a rule to rebuild the
3739 # file in the subdir.
3740 my $fd = dirname ($file);
3741 if ($fd ne $relative_dir)
3742 {
3743 if ($relative_dir eq '.' && ! &is_make_dir ($fd))
3744 {
3745 $local = $file;
3746 }
3747 else
3748 {
3749 next;
3750 }
3751 }
3753 my @rewritten_inputs = rewrite_inputs_into_dependencies ($file, @inputs);
3755 $output_rules .= ($local . ': '
3756 . '$(top_builddir)/config.status '
3757 . "@rewritten_inputs\n"
3758 . "\t"
3759 . 'cd $(top_builddir) && '
3760 . '$(SHELL) ./config.status '
3761 . ($relative_dir eq '.' ? '' : '$(subdir)/')
3762 . '$@'
3763 . "\n");
3764 push (@actual_other_files, $local);
3765 }
3767 # For links we should clean destinations and distribute sources.
3768 foreach my $spec (@config_links)
3769 {
3770 my ($link, $file) = split /:/, $spec;
3771 my $where = $ac_config_files_location{$link};
3773 # Skip destinations that contain shell variables.
3774 if ($link !~ /\$/)
3775 {
3776 # We skip links that aren't in this directory. However, if
3777 # the link's directory does not have a Makefile, and we are
3778 # currently doing `.', then we add the link to CONFIG_CLEAN_FILES
3779 # in `.'s Makefile.in.
3780 my $local = basename ($link);
3781 my $fd = dirname ($link);
3782 if ($fd ne $relative_dir)
3783 {
3784 if ($relative_dir eq '.' && ! &is_make_dir ($fd))
3785 {
3786 $local = $link;
3787 }
3788 else
3789 {
3790 $local = undef;
3791 }
3792 }
3793 push @actual_other_files, $local if $local;
3794 }
3796 # Do not process sources that contain shell variables.
3797 if ($file !~ /\$/)
3798 {
3799 my $fd = dirname ($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.
3803 if ($relative_dir eq '.')
3804 {
3805 $dist_dirs{$fd} = 1;
3806 }
3808 # We distribute files that are in this directory.
3809 # At the top-level (`.') we also distribute files whose
3810 # directory does not have a Makefile.
3811 if (($fd eq $relative_dir)
3812 || ($relative_dir eq '.' && ! &is_make_dir ($fd)))
3813 {
3814 # The following will distribute $file as a side-effect when
3815 # it is appropriate (i.e., when $file is not already an output).
3816 # We do not need the result, just the side-effect.
3817 rewrite_inputs_into_dependencies ($link, $file);
3818 }
3819 }
3820 }
3822 # These files get removed by "make distclean".
3823 define_pretty_variable ('CONFIG_CLEAN_FILES', TRUE, INTERNAL,
3824 @actual_other_files);
3825 }
3827 # Handle C headers.
3828 sub handle_headers
3829 {
3830 my @r = &am_install_var ('-defaultdist', 'header', 'HEADERS', 'include',
3831 'oldinclude', 'pkginclude',
3832 'noinst', 'check');
3833 foreach (@r)
3834 {
3835 next unless $_->[1] =~ /\..*$/;
3836 &saw_extension ($&);
3837 }
3838 }
3840 sub handle_gettext
3841 {
3842 return if ! $seen_gettext || $relative_dir ne '.';
3844 my $subdirs = var 'SUBDIRS';
3846 if (! $subdirs)
3847 {
3848 err_ac "AM_GNU_GETTEXT used but SUBDIRS not defined";
3849 return;
3850 }
3852 # Perform some sanity checks to help users get the right setup.
3853 # We disable these tests when po/ doesn't exist in order not to disallow
3854 # unusual gettext setups.
3855 #
3856 # Bruno Haible:
3857 # | The idea is:
3858 # |
3859 # | 1) If a package doesn't have a directory po/ at top level, it
3860 # | will likely have multiple po/ directories in subpackages.
3861 # |
3862 # | 2) It is useful to warn for the absence of intl/ if AM_GNU_GETTEXT
3863 # | is used without 'external'. It is also useful to warn for the
3864 # | presence of intl/ if AM_GNU_GETTEXT([external]) is used. Both
3865 # | warnings apply only to the usual layout of packages, therefore
3866 # | they should both be disabled if no po/ directory is found at
3867 # | top level.
3869 if (-d 'po')
3870 {
3871 my @subdirs = $subdirs->value_as_list_recursive;
3873 msg_var ('syntax', $subdirs,
3874 "AM_GNU_GETTEXT used but `po' not in SUBDIRS")
3875 if ! grep ($_ eq 'po', @subdirs);
3877 # intl/ is not required when AM_GNU_GETTEXT is called with
3878 # the `external' option.
3879 msg_var ('syntax', $subdirs,
3880 "AM_GNU_GETTEXT used but `intl' not in SUBDIRS")
3881 if (! $seen_gettext_external
3882 && ! grep ($_ eq 'intl', @subdirs));
3884 # intl/ should not be used with AM_GNU_GETTEXT([external])
3885 msg_var ('syntax', $subdirs,
3886 "`intl' should not be in SUBDIRS when "
3887 . "AM_GNU_GETTEXT([external]) is used")
3888 if ($seen_gettext_external && grep ($_ eq 'intl', @subdirs));
3889 }
3891 require_file ($ac_gettext_location, GNU, 'ABOUT-NLS');
3892 }
3894 # Handle footer elements.
3895 sub handle_footer
3896 {
3897 # NOTE don't use define_pretty_variable here, because
3898 # $contents{...} is already defined.
3899 $output_vars .= 'SOURCES = ' . variable_value ('SOURCES') . "\n\n"
3900 if variable_value ('SOURCES');
3902 reject_rule ('.SUFFIXES',
3903 "use variable `SUFFIXES', not target `.SUFFIXES'");
3905 # Note: AIX 4.1 /bin/make will fail if any suffix rule appears
3906 # before .SUFFIXES. So we make sure that .SUFFIXES appears before
3907 # anything else, by sticking it right after the default: target.
3908 $output_header .= ".SUFFIXES:\n";
3909 my $suffixes = var 'SUFFIXES';
3910 my @suffixes = Automake::Rule::suffixes;
3911 if (@suffixes || $suffixes)
3912 {
3913 # Make sure SUFFIXES has unique elements. Sort them to ensure
3914 # the output remains consistent. However, $(SUFFIXES) is
3915 # always at the start of the list, unsorted. This is done
3916 # because make will choose rules depending on the ordering of
3917 # suffixes, and this lets the user have some control. Push
3918 # actual suffixes, and not $(SUFFIXES). Some versions of make
3919 # do not like variable substitutions on the .SUFFIXES line.
3920 my @user_suffixes = ($suffixes
3921 ? $suffixes->value_as_list_recursive : ());
3923 my %suffixes = map { $_ => 1 } @suffixes;
3924 delete @suffixes{@user_suffixes};
3926 $output_header .= (".SUFFIXES: "
3927 . join (' ', @user_suffixes, sort keys %suffixes)
3928 . "\n");
3929 }
3931 $output_trailer .= file_contents ('footer', new Automake::Location);
3932 }
3935 # Generate `make install' rules.
3936 sub handle_install ()
3937 {
3938 $output_rules .= &file_contents
3939 ('install',
3940 new Automake::Location,
3941 maybe_BUILT_SOURCES => (set_seen ('BUILT_SOURCES')
3942 ? (" \$(BUILT_SOURCES)\n"
3943 . "\t\$(MAKE) \$(AM_MAKEFLAGS)")
3944 : ''),
3945 'installdirs-local' => (rule 'installdirs-local'
3946 ? ' installdirs-local' : ''),
3947 am__installdirs => variable_value ('am__installdirs') || '');
3948 }
3951 # Deal with all and all-am.
3952 sub handle_all ($)
3953 {
3954 my ($makefile) = @_;
3956 # Output `all-am'.
3958 # Put this at the beginning for the sake of non-GNU makes. This
3959 # is still wrong if these makes can run parallel jobs. But it is
3960 # right enough.
3961 unshift (@all, basename ($makefile));
3963 foreach my $spec (@config_headers)
3964 {
3965 my ($out, @ins) = split_config_file_spec ($spec);
3966 push (@all, basename ($out))
3967 if dirname ($out) eq $relative_dir;
3968 }
3970 # Install `all' hooks.
3971 if (rule "all-local")
3972 {
3973 push (@all, "all-local");
3974 &depend ('.PHONY', "all-local");
3975 }
3977 &pretty_print_rule ("all-am:", "\t\t", @all);
3978 &depend ('.PHONY', 'all-am', 'all');
3981 # Output `all'.
3983 my @local_headers = ();
3984 push @local_headers, '$(BUILT_SOURCES)'
3985 if var ('BUILT_SOURCES');
3986 foreach my $spec (@config_headers)
3987 {
3988 my ($out, @ins) = split_config_file_spec ($spec);
3989 push @local_headers, basename ($out)
3990 if dirname ($out) eq $relative_dir;
3991 }
3993 if (@local_headers)
3994 {
3995 # We need to make sure config.h is built before we recurse.
3996 # We also want to make sure that built sources are built
3997 # before any ordinary `all' targets are run. We can't do this
3998 # by changing the order of dependencies to the "all" because
3999 # that breaks when using parallel makes. Instead we handle
4000 # things explicitly.
4001 $output_all .= ("all: @local_headers"
4002 . "\n\t"
4003 . '$(MAKE) $(AM_MAKEFLAGS) '
4004 . (var ('SUBDIRS') ? 'all-recursive' : 'all-am')
4005 . "\n\n");
4006 }
4007 else
4008 {
4009 $output_all .= "all: " . (var ('SUBDIRS')
4010 ? 'all-recursive' : 'all-am') . "\n\n";
4011 }
4012 }
4015 # &do_check_merge_target ()
4016 # -------------------------
4017 # Handle check merge target specially.
4018 sub do_check_merge_target ()
4019 {
4020 if (rule 'check-local')
4021 {
4022 # User defined local form of target. So include it.
4023 push @check_tests, 'check-local';
4024 depend '.PHONY', 'check-local';
4025 }
4027 # In --cygnus mode, check doesn't depend on all.
4028 if (option 'cygnus')
4029 {
4030 # Just run the local check rules.
4031 pretty_print_rule ('check-am:', "\t\t", @check);
4032 }
4033 else
4034 {
4035 # The check target must depend on the local equivalent of
4036 # `all', to ensure all the primary targets are built. Then it
4037 # must build the local check rules.
4038 $output_rules .= "check-am: all-am\n";
4039 pretty_print_rule ("\t\$(MAKE) \$(AM_MAKEFLAGS)", "\t ",
4040 @check)
4041 if @check;
4042 }
4043 pretty_print_rule ("\t\$(MAKE) \$(AM_MAKEFLAGS)", "\t ",
4044 @check_tests)
4045 if @check_tests;
4047 depend '.PHONY', 'check', 'check-am';
4048 # Handle recursion. We have to honor BUILT_SOURCES like for `all:'.
4049 $output_rules .= ("check: "
4050 . (var ('BUILT_SOURCES')
4051 ? "\$(BUILT_SOURCES)\n\t\$(MAKE) \$(AM_MAKEFLAGS) "
4052 : '')
4053 . (var ('SUBDIRS') ? 'check-recursive' : 'check-am')
4054 . "\n");
4055 }
4057 # handle_clean ($MAKEFILE)
4058 # ------------------------
4059 # Handle all 'clean' targets.
4060 sub handle_clean ($)
4061 {
4062 my ($makefile) = @_;
4064 # Clean the files listed in user variables if they exist.
4065 $clean_files{'$(MOSTLYCLEANFILES)'} = MOSTLY_CLEAN
4066 if var ('MOSTLYCLEANFILES');
4067 $clean_files{'$(CLEANFILES)'} = CLEAN
4068 if var ('CLEANFILES');
4069 $clean_files{'$(DISTCLEANFILES)'} = DIST_CLEAN
4070 if var ('DISTCLEANFILES');
4071 $clean_files{'$(MAINTAINERCLEANFILES)'} = MAINTAINER_CLEAN
4072 if var ('MAINTAINERCLEANFILES');
4074 # Built sources are automatically removed by maintainer-clean.
4075 $clean_files{'$(BUILT_SOURCES)'} = MAINTAINER_CLEAN
4076 if var ('BUILT_SOURCES');
4078 # Compute a list of "rm"s to run for each target.
4079 my %rms = (MOSTLY_CLEAN, [],
4080 CLEAN, [],
4081 DIST_CLEAN, [],
4082 MAINTAINER_CLEAN, []);
4084 foreach my $file (keys %clean_files)
4085 {
4086 my $when = $clean_files{$file};
4087 prog_error 'invalid entry in %clean_files'
4088 unless exists $rms{$when};
4090 my $rm = "rm -f $file";
4091 # If file is a variable, make sure when don't call `rm -f' without args.
4092 $rm ="test -z \"$file\" || $rm"
4093 if ($file =~ /^\s*\$(\(.*\)|\{.*\})\s*$/);
4095 push @{$rms{$when}}, "\t-$rm\n";
4096 }
4098 $output_rules .= &file_contents
4099 ('clean',
4100 new Automake::Location,
4101 MOSTLYCLEAN_RMS => join ('', @{$rms{&MOSTLY_CLEAN}}),
4102 CLEAN_RMS => join ('', @{$rms{&CLEAN}}),
4103 DISTCLEAN_RMS => join ('', @{$rms{&DIST_CLEAN}}),
4104 MAINTAINER_CLEAN_RMS => join ('', @{$rms{&MAINTAINER_CLEAN}}),
4105 MAKEFILE => basename $makefile,
4106 );
4107 }
4110 # &target_cmp ($A, $B)
4111 # --------------------
4112 # Subroutine for &handle_factored_dependencies to let `.PHONY' be last.
4113 sub target_cmp
4114 {
4115 return 0
4116 if $a eq $b;
4117 return -1
4118 if $b eq '.PHONY';
4119 return 1
4120 if $a eq '.PHONY';
4121 return $a cmp $b;
4122 }
4125 # &handle_factored_dependencies ()
4126 # --------------------------------
4127 # Handle everything related to gathered targets.
4128 sub handle_factored_dependencies
4129 {
4130 # Reject bad hooks.
4131 foreach my $utarg ('uninstall-data-local', 'uninstall-data-hook',
4132 'uninstall-exec-local', 'uninstall-exec-hook')
4133 {
4134 my $x = $utarg;
4135 $x =~ s/(data|exec)-//;
4136 reject_rule ($utarg, "use `$x', not `$utarg'");
4137 }
4139 reject_rule ('install-local',
4140 "use `install-data-local' or `install-exec-local', "
4141 . "not `install-local'");
4143 reject_rule ('install-info-local',
4144 "`install-info-local' target defined but "
4145 . "`no-installinfo' option not in use")
4146 unless option 'no-installinfo';
4148 # Install the -local hooks.
4149 foreach (keys %dependencies)
4150 {
4151 # Hooks are installed on the -am targets.
4152 s/-am$// or next;
4153 if (rule "$_-local")
4154 {
4155 depend ("$_-am", "$_-local");
4156 depend ('.PHONY', "$_-local");
4157 }
4158 }
4160 # Install the -hook hooks.
4161 # FIXME: Why not be as liberal as we are with -local hooks?
4162 foreach ('install-exec', 'install-data', 'uninstall')
4163 {
4164 if (rule ("$_-hook"))
4165 {
4166 $actions{"$_-am"} .=
4167 ("\t\@\$(NORMAL_INSTALL)\n"
4168 . "\t" . '$(MAKE) $(AM_MAKEFLAGS) ' . "$_-hook\n");
4169 }
4170 }
4172 # All the required targets are phony.
4173 depend ('.PHONY', keys %required_targets);
4175 # Actually output gathered targets.
4176 foreach (sort target_cmp keys %dependencies)
4177 {
4178 # If there is nothing about this guy, skip it.
4179 next
4180 unless (@{$dependencies{$_}}
4181 || $actions{$_}
4182 || $required_targets{$_});
4184 # Define gathered targets in undefined conditions.
4185 # FIXME: Right now we must handle .PHONY as an exception,
4186 # because people write things like
4187 # .PHONY: myphonytarget
4188 # to append dependencies. This would not work if Automake
4189 # refrained from defining its own .PHONY target as it does
4190 # with other overridden targets.
4191 my @undefined_conds = (TRUE,);
4192 if ($_ ne '.PHONY')
4193 {
4194 @undefined_conds =
4195 Automake::Rule::define ($_, 'internal',
4196 RULE_AUTOMAKE, TRUE, INTERNAL);
4197 }
4198 my @uniq_deps = uniq (sort @{$dependencies{$_}});
4199 foreach my $cond (@undefined_conds)
4200 {
4201 my $condstr = $cond->subst_string;
4202 &pretty_print_rule ("$condstr$_:", "$condstr\t", @uniq_deps);
4203 $output_rules .= $actions{$_} if defined $actions{$_};
4204 $output_rules .= "\n";
4205 }
4206 }
4207 }
4210 # &handle_tests_dejagnu ()
4211 # ------------------------
4212 sub handle_tests_dejagnu
4213 {
4214 push (@check_tests, 'check-DEJAGNU');
4215 $output_rules .= file_contents ('dejagnu', new Automake::Location);
4216 }
4219 # Handle TESTS variable and other checks.
4220 sub handle_tests
4221 {
4222 if (option 'dejagnu')
4223 {
4224 &handle_tests_dejagnu;
4225 }
4226 else
4227 {
4228 foreach my $c ('DEJATOOL', 'RUNTEST', 'RUNTESTFLAGS')
4229 {
4230 reject_var ($c, "`$c' defined but `dejagnu' not in "
4231 . "`AUTOMAKE_OPTIONS'");
4232 }
4233 }
4235 if (var ('TESTS'))
4236 {
4237 push (@check_tests, 'check-TESTS');
4238 $output_rules .= &file_contents ('check', new Automake::Location);
4239 }
4240 }
4242 # Handle Emacs Lisp.
4243 sub handle_emacs_lisp
4244 {
4245 my @elfiles = &am_install_var ('-candist', 'lisp', 'LISP',
4246 'lisp', 'noinst');
4248 return if ! @elfiles;
4250 # Generate .elc files.
4251 my @elcfiles = map { $_->[1] . 'c' } @elfiles;
4253 define_pretty_variable ('ELCFILES', TRUE, INTERNAL, @elcfiles);
4254 define_pretty_variable ('am__ELFILES', TRUE, INTERNAL,
4255 map { $_->[1] } @elfiles);
4257 # Do not depend on the build rules if ELCFILES is empty.
4258 # This is necessary because overriding ELCFILES= is a documented
4259 # idiom to disable byte-compilation.
4260 if (variable_value ('ELCFILES'))
4261 {
4262 # It's important that all depends on elc-stamp so that
4263 # all .elc files get recompiled whenever a .el changes.
4264 # It's important that all depends on $(ELCFILES) so that
4265 # we can recover if any of them is deleted.
4266 push (@all, 'elc-stamp', '$(ELCFILES)');
4267 }
4269 require_variables ($elfiles[0][0], "Emacs Lisp sources seen", TRUE,
4270 'EMACS', 'lispdir');
4271 require_conf_file ($elfiles[0][0], FOREIGN, 'elisp-comp');
4272 &define_variable ('elisp_comp', $config_aux_dir . '/elisp-comp', INTERNAL);
4273 }
4275 # Handle Python
4276 sub handle_python
4277 {
4278 my @pyfiles = &am_install_var ('-defaultdist', 'python', 'PYTHON',
4279 'noinst');
4280 return if ! @pyfiles;
4282 require_variables ($pyfiles[0][0], "Python sources seen", TRUE, 'PYTHON');
4283 require_conf_file ($pyfiles[0][0], FOREIGN, 'py-compile');
4284 &define_variable ('py_compile', $config_aux_dir . '/py-compile', INTERNAL);
4285 }
4287 # Handle Java.
4288 sub handle_java
4289 {
4290 my @sourcelist = &am_install_var ('-candist',
4291 'java', 'JAVA',
4292 'java', 'noinst', 'check');
4293 return if ! @sourcelist;
4295 my @prefix = am_primary_prefixes ('JAVA', 1,
4296 'java', 'noinst', 'check');
4298 my $dir;
4299 foreach my $curs (@prefix)
4300 {
4301 next
4302 if $curs eq 'EXTRA';
4304 err_var "${curs}_JAVA", "multiple _JAVA primaries in use"
4305 if defined $dir;
4306 $dir = $curs;
4307 }
4310 push (@all, 'class' . $dir . '.stamp');
4311 }
4314 # Handle some of the minor options.
4315 sub handle_minor_options
4316 {
4317 if (option 'readme-alpha')
4318 {
4319 if ($relative_dir eq '.')
4320 {
4321 if ($package_version !~ /^$GNITS_VERSION_PATTERN$/)
4322 {
4323 msg ('error-gnits', $package_version_location,
4324 "version `$package_version' doesn't follow " .
4325 "Gnits standards");
4326 }
4327 if (defined $1 && -f 'README-alpha')
4328 {
4329 # This means we have an alpha release. See
4330 # GNITS_VERSION_PATTERN for details.
4331 push_dist_common ('README-alpha');
4332 }
4333 }
4334 }
4335 }
4337 ################################################################
4339 # ($OUTPUT, @INPUTS)
4340 # &split_config_file_spec ($SPEC)
4341 # -------------------------------
4342 # Decode the Autoconf syntax for config files (files, headers, links
4343 # etc.).
4344 sub split_config_file_spec ($)
4345 {
4346 my ($spec) = @_;
4347 my ($output, @inputs) = split (/:/, $spec);
4349 push @inputs, "$output.in"
4350 unless @inputs;
4352 return ($output, @inputs);
4353 }
4355 # $input
4356 # locate_am (@POSSIBLE_SOURCES)
4357 # -----------------------------
4358 # AC_CONFIG_FILES allow specifications such as Makefile:top.in:mid.in:bot.in
4359 # This functions returns the first *.in file for which a *.am exists.
4360 # It returns undef otherwise.
4361 sub locate_am (@)
4362 {
4363 my (@rest) = @_;
4364 my $input;
4365 foreach my $file (@rest)
4366 {
4367 if (($file =~ /^(.*)\.in$/) && -f "$1.am")
4368 {
4369 $input = $file;
4370 last;
4371 }
4372 }
4373 return $input;
4374 }
4376 my %make_list;
4378 # &scan_autoconf_config_files ($WHERE, $CONFIG-FILES)
4379 # ---------------------------------------------------
4380 # Study $CONFIG-FILES which is the first argument to AC_CONFIG_FILES
4381 # (or AC_OUTPUT).
4382 sub scan_autoconf_config_files ($$)
4383 {
4384 my ($where, $config_files) = @_;
4386 # Look at potential Makefile.am's.
4387 foreach (split ' ', $config_files)
4388 {
4389 # Must skip empty string for Perl 4.
4390 next if $_ eq "\\" || $_ eq '';
4392 # Handle $local:$input syntax.
4393 my ($local, @rest) = split (/:/);
4394 @rest = ("$local.in",) unless @rest;
4395 my $input = locate_am @rest;
4396 if ($input)
4397 {
4398 # We have a file that automake should generate.
4399 $make_list{$input} = join (':', ($local, @rest));
4400 }
4401 else
4402 {
4403 # We have a file that automake should cause to be
4404 # rebuilt, but shouldn't generate itself.
4405 push (@other_input_files, $_);
4406 }
4407 $ac_config_files_location{$local} = $where;
4408 }
4409 }
4412 # &scan_autoconf_traces ($FILENAME)
4413 # ---------------------------------
4414 sub scan_autoconf_traces ($)
4415 {
4416 my ($filename) = @_;
4418 # Macros to trace, with their minimal number of arguments.
4419 my %traced = (
4420 AC_CANONICAL_HOST => 0,
4421 AC_CANONICAL_SYSTEM => 0,
4422 AC_CONFIG_AUX_DIR => 1,
4423 AC_CONFIG_FILES => 1,
4424 AC_CONFIG_HEADERS => 1,
4425 AC_CONFIG_LINKS => 1,
4426 AC_INIT => 0,
4427 AC_LIBSOURCE => 1,
4428 AC_SUBST => 1,
4429 AM_AUTOMAKE_VERSION => 1,
4430 AM_CONDITIONAL => 2,
4431 AM_ENABLE_MULTILIB => 0,
4432 AM_GNU_GETTEXT => 0,
4433 AM_INIT_AUTOMAKE => 0,
4434 AM_MAINTAINER_MODE => 0,
4435 AM_PROG_CC_C_O => 0,
4436 m4_include => 1,
4437 m4_sinclude => 1,
4438 sinclude => 1,
4439 );
4441 my $traces = ($ENV{AUTOCONF} || 'autoconf') . " ";
4443 # Use a separator unlikely to be used, not `:', the default, which
4444 # has a precise meaning for AC_CONFIG_FILES and so on.
4445 $traces .= join (' ',
4446 map { "--trace=$_" . ':\$f:\$l::\$n::\${::}%' }
4447 (keys %traced));
4449 my $tracefh = new Automake::XFile ("$traces $filename |");
4450 verb "reading $traces";
4452 while ($_ = $tracefh->getline)
4453 {
4454 chomp;
4455 my ($here, @args) = split /::/;
4456 my $where = new Automake::Location $here;
4457 my $macro = $args[0];
4459 prog_error ("unrequested trace `$macro'")
4460 unless exists $traced{$macro};
4462 # Skip and diagnose malformed calls.
4463 if ($#args < $traced{$macro})
4464 {
4465 msg ('syntax', $where, "not enough arguments for $macro");
4466 next;
4467 }
4469 # Alphabetical ordering please.
4470 if ($macro eq 'AC_CANONICAL_HOST')
4471 {
4472 if (! $seen_canonical)
4473 {
4474 $seen_canonical = AC_CANONICAL_HOST;
4475 $canonical_location = $where;
4476 }
4477 }
4478 elsif ($macro eq 'AC_CANONICAL_SYSTEM')
4479 {
4480 $seen_canonical = AC_CANONICAL_SYSTEM;
4481 $canonical_location = $where;
4482 }
4483 elsif ($macro eq 'AC_CONFIG_AUX_DIR')
4484 {
4485 @config_aux_path = $args[1];
4486 $config_aux_dir_set_in_configure_in = 1;
4487 }
4488 elsif ($macro eq 'AC_CONFIG_FILES')
4489 {
4490 # Look at potential Makefile.am's.
4491 scan_autoconf_config_files ($where, $args[1]);
4492 }
4493 elsif ($macro eq 'AC_CONFIG_HEADERS')
4494 {
4495 foreach my $spec (split (' ', $args[1]))
4496 {
4497 my ($dest, @src) = split (':', $spec);
4498 $ac_config_files_location{$dest} = $where;
4499 push @config_headers, $spec;
4500 }
4501 }
4502 elsif ($macro eq 'AC_CONFIG_LINKS')
4503 {
4504 foreach my $spec (split (' ', $args[1]))
4505 {
4506 my ($dest, $src) = split (':', $spec);
4507 $ac_config_files_location{$dest} = $where;
4508 push @config_links, $spec;
4509 }
4510 }
4511 elsif ($macro eq 'AC_INIT')
4512 {
4513 if (defined $args[2])
4514 {
4515 $package_version = $args[2];
4516 $package_version_location = $where;
4517 }
4518 }
4519 elsif ($macro eq 'AC_LIBSOURCE')
4520 {
4521 $libsources{$args[1]} = $here;
4522 }
4523 elsif ($macro eq 'AC_SUBST')
4524 {
4525 # Just check for alphanumeric in AC_SUBST. If you do
4526 # AC_SUBST(5), then too bad.
4527 $configure_vars{$args[1]} = $where
4528 if $args[1] =~ /^\w+$/;
4529 }
4530 elsif ($macro eq 'AM_AUTOMAKE_VERSION')
4531 {
4532 error ($where,
4533 "version mismatch. This is Automake $VERSION,\n" .
4534 "but the definition used by this AM_INIT_AUTOMAKE\n" .
4535 "comes from Automake $args[1]. You should recreate\n" .
4536 "aclocal.m4 with aclocal and run automake again.\n",
4537 # $? = 63 is used to indicate version mismatch to missing.
4538 exit_code => 63)
4539 if $VERSION ne $args[1];
4541 $seen_automake_version = 1;
4542 }
4543 elsif ($macro eq 'AM_CONDITIONAL')
4544 {
4545 $configure_cond{$args[1]} = $where;
4546 }
4547 elsif ($macro eq 'AM_ENABLE_MULTILIB')
4548 {
4549 $seen_multilib = $where;
4550 }
4551 elsif ($macro eq 'AM_GNU_GETTEXT')
4552 {
4553 $seen_gettext = $where;
4554 $ac_gettext_location = $where;
4555 $seen_gettext_external = grep ($_ eq 'external', @args);
4556 }
4557 elsif ($macro eq 'AM_INIT_AUTOMAKE')
4558 {
4559 $seen_init_automake = $where;
4560 if (defined $args[2])
4561 {
4562 $package_version = $args[2];
4563 $package_version_location = $where;
4564 }
4565 elsif (defined $args[1])
4566 {
4567 exit $exit_code
4568 if (process_global_option_list ($where,
4569 split (' ', $args[1])));
4570 }
4571 }
4572 elsif ($macro eq 'AM_MAINTAINER_MODE')
4573 {
4574 $seen_maint_mode = $where;
4575 }
4576 elsif ($macro eq 'AM_PROG_CC_C_O')
4577 {
4578 $seen_cc_c_o = $where;
4579 }
4580 elsif ($macro eq 'm4_include'
4581 || $macro eq 'm4_sinclude'
4582 || $macro eq 'sinclude')
4583 {
4584 # Some modified versions of Autoconf don't use
4585 # forzen files. Consequently it's possible that we see all
4586 # m4_include's performed during Autoconf's startup.
4587 # Obviously we don't want to distribute Autoconf's files
4588 # so we skip absolute filenames here.
4589 push @configure_deps, '$(top_srcdir)/' . $args[1]
4590 unless $here =~ m,^(?:\w:)?[\\/],;
4591 # Keep track of the greatest timestamp.
4592 if (-e $args[1])
4593 {
4594 my $mtime = mtime $args[1];
4595 $configure_deps_greatest_timestamp = $mtime
4596 if $mtime > $configure_deps_greatest_timestamp;
4597 }
4598 }
4599 }
4601 $tracefh->close;
4602 }
4605 # &scan_autoconf_files ()
4606 # -----------------------
4607 # Check whether we use `configure.ac' or `configure.in'.
4608 # Scan it (and possibly `aclocal.m4') for interesting things.
4609 # We must scan aclocal.m4 because there might be AC_SUBSTs and such there.
4610 sub scan_autoconf_files ()
4611 {
4612 # Reinitialize libsources here. This isn't really necessary,
4613 # since we currently assume there is only one configure.ac. But
4614 # that won't always be the case.
4615 %libsources = ();
4617 # Keep track of the youngest configure dependency.
4618 $configure_deps_greatest_timestamp = mtime $configure_ac;
4619 if (-e 'aclocal.m4')
4620 {
4621 my $mtime = mtime 'aclocal.m4';
4622 $configure_deps_greatest_timestamp = $mtime
4623 if $mtime > $configure_deps_greatest_timestamp;
4624 }
4626 scan_autoconf_traces ($configure_ac);
4628 @configure_input_files = sort keys %make_list;
4629 # Set input and output files if not specified by user.
4630 if (! @input_files)
4631 {
4632 @input_files = @configure_input_files;
4633 %output_files = %make_list;
4634 }
4637 if (! $seen_init_automake)
4638 {
4639 err_ac ("no proper invocation of AM_INIT_AUTOMAKE was found.\nYou "
4640 . "should verify that $configure_ac invokes AM_INIT_AUTOMAKE,"
4641 . "\nthat aclocal.m4 is present in the top-level directory,\n"
4642 . "and that aclocal.m4 was recently regenerated "
4643 . "(using aclocal).");
4644 }
4645 else
4646 {
4647 if (! $seen_automake_version)
4648 {
4649 if (-f 'aclocal.m4')
4650 {
4651 error ($seen_init_automake,
4652 "your implementation of AM_INIT_AUTOMAKE comes from " .
4653 "an\nold Automake version. You should recreate " .
4654 "aclocal.m4\nwith aclocal and run automake again.\n",
4655 # $? = 63 is used to indicate version mismatch to missing.
4656 exit_code => 63);
4657 }
4658 else
4659 {
4660 error ($seen_init_automake,
4661 "no proper implementation of AM_INIT_AUTOMAKE was " .
4662 "found,\nprobably because aclocal.m4 is missing...\n" .
4663 "You should run aclocal to create this file, then\n" .
4664 "run automake again.\n");
4665 }
4666 }
4667 }
4669 # Look for some files we need. Always check for these. This
4670 # check must be done for every run, even those where we are only
4671 # looking at a subdir Makefile. We must set relative_dir so that
4672 # the file-finding machinery works.
4673 # FIXME: Is this broken because it needs dynamic scopes.
4674 # My tests seems to show it's not the case.
4675 $relative_dir = '.';
4676 require_conf_file ($configure_ac, FOREIGN, 'install-sh', 'missing');
4677 err_am "`install.sh' is an anachronism; use `install-sh' instead"
4678 if -f $config_aux_path[0] . '/install.sh';
4680 # Preserve dist_common for later.
4681 $configure_dist_common = variable_value ('DIST_COMMON') || '';
4682 }
4684 ################################################################
4686 # Set up for Cygnus mode.
4687 sub check_cygnus
4688 {
4689 my $cygnus = option 'cygnus';
4690 return unless $cygnus;
4692 set_strictness ('foreign');
4693 set_option ('no-installinfo', $cygnus);
4694 set_option ('no-dependencies', $cygnus);
4695 set_option ('no-dist', $cygnus);
4697 err_ac "`AM_MAINTAINER_MODE' required when --cygnus specified"
4698 if !$seen_maint_mode;
4699 }
4701 # Do any extra checking for GNU standards.
4702 sub check_gnu_standards
4703 {
4704 if ($relative_dir eq '.')
4705 {
4706 # In top level (or only) directory.
4707 require_file ("$am_file.am", GNU,
4708 qw/INSTALL NEWS README AUTHORS ChangeLog/);
4710 # Accept one of these three licenses; default to COPYING.
4711 # Make sure we do not overwrite an existing license.
4712 my $license;
4713 foreach (qw /COPYING COPYING.LIB COPYING.LESSER/)
4714 {
4715 if (-f $_)
4716 {
4717 $license = $_;
4718 last;
4719 }
4720 }
4721 require_file ("$am_file.am", GNU, 'COPYING')
4722 unless $license;
4723 }
4725 for my $opt ('no-installman', 'no-installinfo')
4726 {
4727 msg ('error-gnu', option $opt,
4728 "option `$opt' disallowed by GNU standards")
4729 if option $opt;
4730 }
4731 }
4733 # Do any extra checking for GNITS standards.
4734 sub check_gnits_standards
4735 {
4736 if ($relative_dir eq '.')
4737 {
4738 # In top level (or only) directory.
4739 require_file ("$am_file.am", GNITS, 'THANKS');
4740 }
4741 }
4743 ################################################################
4744 #
4745 # Functions to handle files of each language.
4747 # Each `lang_X_rewrite($DIRECTORY, $BASE, $EXT)' function follows a
4748 # simple formula: Return value is LANG_SUBDIR if the resulting object
4749 # file should be in a subdir if the source file is, LANG_PROCESS if
4750 # file is to be dealt with, LANG_IGNORE otherwise.
4752 # Much of the actual processing is handled in
4753 # handle_single_transform_list. These functions exist so that
4754 # auxiliary information can be recorded for a later cleanup pass.
4755 # Note that the calls to these functions are computed, so don't bother
4756 # searching for their precise names in the source.
4758 # This is just a convenience function that can be used to determine
4759 # when a subdir object should be used.
4760 sub lang_sub_obj
4761 {
4762 return option 'subdir-objects' ? LANG_SUBDIR : LANG_PROCESS;
4763 }
4765 # Rewrite a single C source file.
4766 sub lang_c_rewrite
4767 {
4768 my ($directory, $base, $ext) = @_;
4770 if (option 'ansi2knr' && $base =~ /_$/)
4771 {
4772 # FIXME: include line number in error.
4773 err_am "C source file `$base.c' would be deleted by ansi2knr rules";
4774 }
4776 my $r = LANG_PROCESS;
4777 if (option 'subdir-objects')
4778 {
4779 $r = LANG_SUBDIR;
4780 $base = $directory . '/' . $base
4781 unless $directory eq '.' || $directory eq '';
4783 err_am ("C objects in subdir but `AM_PROG_CC_C_O' "
4784 . "not in `$configure_ac'",
4785 uniq_scope => US_GLOBAL)
4786 unless $seen_cc_c_o;
4788 require_conf_file ("$am_file.am", FOREIGN, 'compile');
4790 # In this case we already have the directory information, so
4791 # don't add it again.
4792 $de_ansi_files{$base} = '';
4793 }
4794 else
4795 {
4796 $de_ansi_files{$base} = (($directory eq '.' || $directory eq '')
4797 ? ''
4798 : "$directory/");
4799 }
4801 return $r;
4802 }
4804 # Rewrite a single C++ source file.
4805 sub lang_cxx_rewrite
4806 {
4807 return &lang_sub_obj;
4808 }
4810 # Rewrite a single header file.
4811 sub lang_header_rewrite
4812 {
4813 # Header files are simply ignored.
4814 return LANG_IGNORE;
4815 }
4817 # Rewrite a single yacc file.
4818 sub lang_yacc_rewrite
4819 {
4820 my ($directory, $base, $ext) = @_;
4822 my $r = &lang_sub_obj;
4823 (my $newext = $ext) =~ tr/y/c/;
4824 return ($r, $newext);
4825 }
4827 # Rewrite a single yacc++ file.
4828 sub lang_yaccxx_rewrite
4829 {
4830 my ($directory, $base, $ext) = @_;
4832 my $r = &lang_sub_obj;
4833 (my $newext = $ext) =~ tr/y/c/;
4834 return ($r, $newext);
4835 }
4837 # Rewrite a single lex file.
4838 sub lang_lex_rewrite
4839 {
4840 my ($directory, $base, $ext) = @_;
4842 my $r = &lang_sub_obj;
4843 (my $newext = $ext) =~ tr/l/c/;
4844 return ($r, $newext);
4845 }
4847 # Rewrite a single lex++ file.
4848 sub lang_lexxx_rewrite
4849 {
4850 my ($directory, $base, $ext) = @_;
4852 my $r = &lang_sub_obj;
4853 (my $newext = $ext) =~ tr/l/c/;
4854 return ($r, $newext);
4855 }
4857 # Rewrite a single assembly file.
4858 sub lang_asm_rewrite
4859 {
4860 return &lang_sub_obj;
4861 }
4863 # Rewrite a single Fortran 77 file.
4864 sub lang_f77_rewrite
4865 {
4866 return LANG_PROCESS;
4867 }
4869 # Rewrite a single preprocessed Fortran 77 file.
4870 sub lang_ppf77_rewrite
4871 {
4872 return LANG_PROCESS;
4873 }
4875 # Rewrite a single ratfor file.
4876 sub lang_ratfor_rewrite
4877 {
4878 return LANG_PROCESS;
4879 }
4881 # Rewrite a single Objective C file.
4882 sub lang_objc_rewrite
4883 {
4884 return &lang_sub_obj;
4885 }
4887 # Rewrite a single Java file.
4888 sub lang_java_rewrite
4889 {
4890 return LANG_SUBDIR;
4891 }
4893 # The lang_X_finish functions are called after all source file
4894 # processing is done. Each should handle defining rules for the
4895 # language, etc. A finish function is only called if a source file of
4896 # the appropriate type has been seen.
4898 sub lang_c_finish
4899 {
4900 # Push all libobjs files onto de_ansi_files. We actually only
4901 # push files which exist in the current directory, and which are
4902 # genuine source files.
4903 foreach my $file (keys %libsources)
4904 {
4905 if ($file =~ /^(.*)\.[cly]$/ && -f "$relative_dir/$file")
4906 {
4907 $de_ansi_files{$1} = ''
4908 }
4909 }
4911 if (option 'ansi2knr' && keys %de_ansi_files)
4912 {
4913 # Make all _.c files depend on their corresponding .c files.
4914 my @objects;
4915 foreach my $base (sort keys %de_ansi_files)
4916 {
4917 # Each _.c file must depend on ansi2knr; otherwise it
4918 # might be used in a parallel build before it is built.
4919 # We need to support files in the srcdir and in the build
4920 # dir (because these files might be auto-generated. But
4921 # we can't use $< -- some makes only define $< during a
4922 # suffix rule.
4923 my $ansfile = $de_ansi_files{$base} . $base . '.c';
4924 $output_rules .= ($base . "_.c: $ansfile \$(ANSI2KNR)\n\t"
4925 . '$(CPP) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS) $(CPPFLAGS) '
4926 . '`if test -f $(srcdir)/' . $ansfile
4927 . '; then echo $(srcdir)/' . $ansfile
4928 . '; else echo ' . $ansfile . '; fi` '
4929 . "| sed 's/^# \\([0-9]\\)/#line \\1/' "
4930 . '| $(ANSI2KNR) > $@'
4931 # If ansi2knr fails then we shouldn't
4932 # create the _.c file
4933 . " || rm -f \$\@\n");
4934 push (@objects, $base . '_.$(OBJEXT)');
4935 push (@objects, $base . '_.lo')
4936 if var ('LIBTOOL');
4937 }
4939 # Make all _.o (and _.lo) files depend on ansi2knr.
4940 # Use a sneaky little hack to make it print nicely.
4941 &pretty_print_rule ('', '', @objects, ':', '$(ANSI2KNR)');
4942 }
4943 }
4945 # This is a yacc helper which is called whenever we have decided to
4946 # compile a yacc file.
4947 sub lang_yacc_target_hook
4948 {
4949 my ($self, $aggregate, $output, $input) = @_;
4951 my $flag = $aggregate . "_YFLAGS";
4952 my $flagvar = var $flag;
4953 my $YFLAGSvar = var 'YFLAGS';
4954 if (($flagvar && $flagvar->variable_value =~ /$DASH_D_PATTERN/o)
4955 || ($YFLAGSvar && $YFLAGSvar->variable_value =~ /$DASH_D_PATTERN/o))
4956 {
4957 (my $output_base = $output) =~ s/$KNOWN_EXTENSIONS_PATTERN$//;
4958 my $header = $output_base . '.h';
4960 # Found a `-d' that applies to the compilation of this file.
4961 # Add a dependency for the generated header file, and arrange
4962 # for that file to be included in the distribution.
4963 # FIXME: this fails for `nodist_*_SOURCES'.
4964 $output_rules .= ("${header}: $output\n"
4965 # Recover from removal of $header
4966 . "\t\@if test ! -f \$@; then \\\n"
4967 . "\t rm -f $output; \\\n"
4968 . "\t \$(MAKE) $output; \\\n"
4969 . "\telse :; fi\n");
4970 &push_dist_common ($header);
4971 # If the files are built in the build directory, then we want
4972 # to remove them with `make clean'. If they are in srcdir
4973 # they shouldn't be touched. However, we can't determine this
4974 # statically, and the GNU rules say that yacc/lex output files
4975 # should be removed by maintainer-clean. So that's what we
4976 # do.
4977 $clean_files{$header} = MAINTAINER_CLEAN;
4978 }
4979 # Erase $OUTPUT on `make maintainer-clean' (by GNU standards).
4980 # See the comment above for $HEADER.
4981 $clean_files{$output} = MAINTAINER_CLEAN;
4982 }
4984 # This is a lex helper which is called whenever we have decided to
4985 # compile a lex file.
4986 sub lang_lex_target_hook
4987 {
4988 my ($self, $aggregate, $output, $input) = @_;
4989 # If the files are built in the build directory, then we want to
4990 # remove them with `make clean'. If they are in srcdir they
4991 # shouldn't be touched. However, we can't determine this
4992 # statically, and the GNU rules say that yacc/lex output files
4993 # should be removed by maintainer-clean. So that's what we do.
4994 $clean_files{$output} = MAINTAINER_CLEAN;
4995 }
4997 # This is a helper for both lex and yacc.
4998 sub yacc_lex_finish_helper
4999 {
5000 return if defined $language_scratch{'lex-yacc-done'};
5001 $language_scratch{'lex-yacc-done'} = 1;
5003 # If there is more than one distinct yacc (resp lex) source file
5004 # in a given directory, then the `ylwrap' program is required to
5005 # allow parallel builds to work correctly. FIXME: for now, no
5006 # line number.
5007 require_conf_file ($configure_ac, FOREIGN, 'ylwrap');
5008 if ($config_aux_dir_set_in_configure_in)
5009 {
5010 &define_variable ('YLWRAP', $config_aux_dir . "/ylwrap", INTERNAL);
5011 }
5012 else
5013 {
5014 &define_variable ('YLWRAP', '$(top_srcdir)/ylwrap', INTERNAL);
5015 }
5016 }
5018 sub lang_yacc_finish
5019 {
5020 return if defined $language_scratch{'yacc-done'};
5021 $language_scratch{'yacc-done'} = 1;
5023 reject_var 'YACCFLAGS', "`YACCFLAGS' obsolete; use `YFLAGS' instead";
5025 &yacc_lex_finish_helper
5026 if count_files_for_language ('yacc') > 1;
5027 }
5030 sub lang_lex_finish
5031 {
5032 return if defined $language_scratch{'lex-done'};
5033 $language_scratch{'lex-done'} = 1;
5035 &yacc_lex_finish_helper
5036 if count_files_for_language ('lex') > 1;
5037 }
5040 # Given a hash table of linker names, pick the name that has the most
5041 # precedence. This is lame, but something has to have global
5042 # knowledge in order to eliminate the conflict. Add more linkers as
5043 # required.
5044 sub resolve_linker
5045 {
5046 my (%linkers) = @_;
5048 foreach my $l (qw(GCJLINK CXXLINK F77LINK OBJCLINK))
5049 {
5050 return $l if defined $linkers{$l};
5051 }
5052 return 'LINK';
5053 }
5055 # Called to indicate that an extension was used.
5056 sub saw_extension
5057 {
5058 my ($ext) = @_;
5059 if (! defined $extension_seen{$ext})
5060 {
5061 $extension_seen{$ext} = 1;
5062 }
5063 else
5064 {
5065 ++$extension_seen{$ext};
5066 }
5067 }
5069 # Return the number of files seen for a given language. Knows about
5070 # special cases we care about. FIXME: this is hideous. We need
5071 # something that involves real language objects. For instance yacc
5072 # and yaccxx could both derive from a common yacc class which would
5073 # know about the strange ylwrap requirement. (Or better yet we could
5074 # just not support legacy yacc!)
5075 sub count_files_for_language
5076 {
5077 my ($name) = @_;
5079 my @names;
5080 if ($name eq 'yacc' || $name eq 'yaccxx')
5081 {
5082 @names = ('yacc', 'yaccxx');
5083 }
5084 elsif ($name eq 'lex' || $name eq 'lexxx')
5085 {
5086 @names = ('lex', 'lexxx');
5087 }
5088 else
5089 {
5090 @names = ($name);
5091 }
5093 my $r = 0;
5094 foreach $name (@names)
5095 {
5096 my $lang = $languages{$name};
5097 foreach my $ext (@{$lang->extensions})
5098 {
5099 $r += $extension_seen{$ext}
5100 if defined $extension_seen{$ext};
5101 }
5102 }
5104 return $r
5105 }
5107 # Called to ask whether source files have been seen . If HEADERS is 1,
5108 # headers can be included.
5109 sub saw_sources_p
5110 {
5111 my ($headers) = @_;
5113 # count all the sources
5114 my $count = 0;
5115 foreach my $val (values %extension_seen)
5116 {
5117 $count += $val;
5118 }
5120 if (!$headers)
5121 {
5122 $count -= count_files_for_language ('header');
5123 }
5125 return $count > 0;
5126 }
5129 # register_language (%ATTRIBUTE)
5130 # ------------------------------
5131 # Register a single language.
5132 # Each %ATTRIBUTE is of the form ATTRIBUTE => VALUE.
5133 sub register_language (%)
5134 {
5135 my (%option) = @_;
5137 # Set the defaults.
5138 $option{'ansi'} = 0
5139 unless defined $option{'ansi'};
5140 $option{'autodep'} = 'no'
5141 unless defined $option{'autodep'};
5142 $option{'linker'} = ''
5143 unless defined $option{'linker'};
5144 $option{'flags'} = []
5145 unless defined $option{'flags'};
5146 $option{'output_extensions'} = sub { return ( '.$(OBJEXT)', '.lo' ) }
5147 unless defined $option{'output_extensions'};
5149 my $lang = new Language (%option);
5151 # Fill indexes.
5152 $extension_map{$_} = $lang->name foreach @{$lang->extensions};
5153 $languages{$lang->name} = $lang;
5155 # Update the pattern of known extensions.
5156 accept_extensions (@{$lang->extensions});
5158 # Upate the $suffix_rule map.
5159 foreach my $suffix (@{$lang->extensions})
5160 {
5161 foreach my $dest (&{$lang->output_extensions} ($suffix))
5162 {
5163 register_suffix_rule (INTERNAL, $suffix, $dest);
5164 }
5165 }
5166 }
5168 # derive_suffix ($EXT, $OBJ)
5169 # --------------------------
5170 # This function is used to find a path from a user-specified suffix $EXT
5171 # to $OBJ or to some other suffix we recognize internally, e.g. `cc'.
5172 sub derive_suffix ($$)
5173 {
5174 my ($source_ext, $obj) = @_;
5176 while (! $extension_map{$source_ext}
5177 && $source_ext ne $obj
5178 && exists $suffix_rules->{$source_ext}
5179 && exists $suffix_rules->{$source_ext}{$obj})
5180 {
5181 $source_ext = $suffix_rules->{$source_ext}{$obj}[0];
5182 }
5184 return $source_ext;
5185 }
5188 ################################################################
5190 # Pretty-print something and append to output_rules.
5191 sub pretty_print_rule
5192 {
5193 $output_rules .= &makefile_wrap (@_);
5194 }
5197 ################################################################
5200 ## -------------------------------- ##
5201 ## Handling the conditional stack. ##
5202 ## -------------------------------- ##
5205 # $STRING
5206 # make_conditional_string ($NEGATE, $COND)
5207 # ----------------------------------------
5208 sub make_conditional_string ($$)
5209 {
5210 my ($negate, $cond) = @_;
5211 $cond = "${cond}_TRUE"
5212 unless $cond =~ /^TRUE|FALSE$/;
5213 $cond = Automake::Condition::conditional_negate ($cond)
5214 if $negate;
5215 return $cond;
5216 }
5219 # $COND
5220 # cond_stack_if ($NEGATE, $COND, $WHERE)
5221 # --------------------------------------
5222 sub cond_stack_if ($$$)
5223 {
5224 my ($negate, $cond, $where) = @_;
5226 error $where, "$cond does not appear in AM_CONDITIONAL"
5227 if ! $configure_cond{$cond} && $cond !~ /^TRUE|FALSE$/;
5229 push (@cond_stack, make_conditional_string ($negate, $cond));
5231 return new Automake::Condition (@cond_stack);
5232 }
5235 # $COND
5236 # cond_stack_else ($NEGATE, $COND, $WHERE)
5237 # ----------------------------------------
5238 sub cond_stack_else ($$$)
5239 {
5240 my ($negate, $cond, $where) = @_;
5242 if (! @cond_stack)
5243 {
5244 error $where, "else without if";
5245 return FALSE;
5246 }
5248 $cond_stack[$#cond_stack] =
5249 Automake::Condition::conditional_negate ($cond_stack[$#cond_stack]);
5251 # If $COND is given, check against it.
5252 if (defined $cond)
5253 {
5254 $cond = make_conditional_string ($negate, $cond);
5256 error ($where, "else reminder ($negate$cond) incompatible with "
5257 . "current conditional: $cond_stack[$#cond_stack]")
5258 if $cond_stack[$#cond_stack] ne $cond;
5259 }
5261 return new Automake::Condition (@cond_stack);
5262 }
5265 # $COND
5266 # cond_stack_endif ($NEGATE, $COND, $WHERE)
5267 # -----------------------------------------
5268 sub cond_stack_endif ($$$)
5269 {
5270 my ($negate, $cond, $where) = @_;
5271 my $old_cond;
5273 if (! @cond_stack)
5274 {
5275 error $where, "endif without if";
5276 return TRUE;
5277 }
5279 # If $COND is given, check against it.
5280 if (defined $cond)
5281 {
5282 $cond = make_conditional_string ($negate, $cond);
5284 error ($where, "endif reminder ($negate$cond) incompatible with "
5285 . "current conditional: $cond_stack[$#cond_stack]")
5286 if $cond_stack[$#cond_stack] ne $cond;
5287 }
5289 pop @cond_stack;
5291 return new Automake::Condition (@cond_stack);
5292 }
5298 ## ------------------------ ##
5299 ## Handling the variables. ##
5300 ## ------------------------ ##
5303 # &define_pretty_variable ($VAR, $COND, $WHERE, @VALUE)
5304 # -----------------------------------------------------
5305 # Like define_variable, but the value is a list, and the variable may
5306 # be defined conditionally. The second argument is the Condition
5307 # under which the value should be defined; this should be the empty
5308 # string to define the variable unconditionally. The third argument
5309 # is a list holding the values to use for the variable. The value is
5310 # pretty printed in the output file.
5311 sub define_pretty_variable ($$$@)
5312 {
5313 my ($var, $cond, $where, @value) = @_;
5315 if (! vardef ($var, $cond))
5316 {
5317 Automake::Variable::define ($var, VAR_AUTOMAKE, '', $cond, "@value",
5318 '', $where, VAR_PRETTY);
5319 rvar ($var)->rdef ($cond)->set_seen;
5320 }
5321 }
5324 # define_variable ($VAR, $VALUE, $WHERE)
5325 # --------------------------------------
5326 # Define a new user variable VAR to VALUE, but only if not already defined.
5327 sub define_variable ($$$)
5328 {
5329 my ($var, $value, $where) = @_;
5330 define_pretty_variable ($var, TRUE, $where, $value);
5331 }
5334 # define_files_variable ($VAR, \@BASENAME, $EXTENSION, $WHERE)
5335 # -----------------------------------------------------------
5336 # Define the $VAR which content is the list of file names composed of
5337 # a @BASENAME and the $EXTENSION.
5338 sub define_files_variable ($\@$$)
5339 {
5340 my ($var, $basename, $extension, $where) = @_;
5341 define_variable ($var,
5342 join (' ', map { "$_.$extension" } @$basename),
5343 $where);
5344 }
5347 # Like define_variable, but define a variable to be the configure
5348 # substitution by the same name.
5349 sub define_configure_variable ($)
5350 {
5351 my ($var) = @_;
5353 my $pretty = VAR_ASIS;
5354 my $owner = VAR_CONFIGURE;
5356 # Do not output the ANSI2KNR configure variable -- we AC_SUBST
5357 # it in protos.m4, but later redefine it elsewhere. This is
5358 # pretty hacky. We also don't output AMDEPBACKSLASH: it might
5359 # be subst'd by `\', which certainly would not be appreciated by
5360 # Make.
5361 if ($var eq 'ANSI2KNR' || $var eq 'AMDEPBACKSLASH')
5362 {
5363 $pretty = VAR_SILENT;
5364 $owner = VAR_AUTOMAKE;
5365 }
5367 Automake::Variable::define ($var, $owner, '', TRUE, subst $var,
5368 '', $configure_vars{$var}, $pretty);
5369 }
5372 # define_compiler_variable ($LANG)
5373 # --------------------------------
5374 # Define a compiler variable. We also handle defining the `LT'
5375 # version of the command when using libtool.
5376 sub define_compiler_variable ($)
5377 {
5378 my ($lang) = @_;
5380 my ($var, $value) = ($lang->compiler, $lang->compile);
5381 &define_variable ($var, $value, INTERNAL);
5382 &define_variable ("LT$var", "\$(LIBTOOL) --mode=compile $value", INTERNAL)
5383 if var ('LIBTOOL');
5384 }
5387 # define_linker_variable ($LANG)
5388 # ------------------------------
5389 # Define linker variables.
5390 sub define_linker_variable ($)
5391 {
5392 my ($lang) = @_;
5394 my ($var, $value) = ($lang->lder, $lang->ld);
5395 # CCLD = $(CC).
5396 &define_variable ($lang->lder, $lang->ld, INTERNAL);
5397 # CCLINK = $(CCLD) blah blah...
5398 &define_variable ($lang->linker,
5399 ((var ('LIBTOOL') ? '$(LIBTOOL) --mode=link ' : '')
5400 . $lang->link),
5401 INTERNAL);
5402 }
5404 ################################################################
5406 # &check_trailing_slash ($WHERE, $LINE)
5407 # --------------------------------------
5408 # Return 1 iff $LINE ends with a slash.
5409 # Might modify $LINE.
5410 sub check_trailing_slash ($\$)
5411 {
5412 my ($where, $line) = @_;
5414 # Ignore `##' lines.
5415 return 0 if $$line =~ /$IGNORE_PATTERN/o;
5417 # Catch and fix a common error.
5418 msg "syntax", $where, "whitespace following trailing backslash"
5419 if $$line =~ s/\\\s+\n$/\\\n/;
5421 return $$line =~ /\\$/;
5422 }
5425 # &read_am_file ($AMFILE, $WHERE)
5426 # -------------------------------
5427 # Read Makefile.am and set up %contents. Simultaneously copy lines
5428 # from Makefile.am into $output_trailer, or define variables as
5429 # appropriate. NOTE we put rules in the trailer section. We want
5430 # user rules to come after our generated stuff.
5431 sub read_am_file ($$)
5432 {
5433 my ($amfile, $where) = @_;
5435 my $am_file = new Automake::XFile ("< $amfile");
5436 verb "reading $amfile";
5438 # Keep track of the youngest output dependency.
5439 my $mtime = mtime $amfile;
5440 $output_deps_greatest_timestamp = $mtime
5441 if $mtime > $output_deps_greatest_timestamp;
5443 my $spacing = '';
5444 my $comment = '';
5445 my $blank = 0;
5446 my $saw_bk = 0;
5448 use constant IN_VAR_DEF => 0;
5449 use constant IN_RULE_DEF => 1;
5450 use constant IN_COMMENT => 2;
5451 my $prev_state = IN_RULE_DEF;
5453 while ($_ = $am_file->getline)
5454 {
5455 $where->set ("$amfile:$.");
5456 if (/$IGNORE_PATTERN/o)
5457 {
5458 # Merely delete comments beginning with two hashes.
5459 }
5460 elsif (/$WHITE_PATTERN/o)
5461 {
5462 error $where, "blank line following trailing backslash"
5463 if $saw_bk;
5464 # Stick a single white line before the incoming macro or rule.
5465 $spacing = "\n";
5466 $blank = 1;
5467 # Flush all comments seen so far.
5468 if ($comment ne '')
5469 {
5470 $output_vars .= $comment;
5471 $comment = '';
5472 }
5473 }
5474 elsif (/$COMMENT_PATTERN/o)
5475 {
5476 # Stick comments before the incoming macro or rule. Make
5477 # sure a blank line precedes the first block of comments.
5478 $spacing = "\n" unless $blank;
5479 $blank = 1;
5480 $comment .= $spacing . $_;
5481 $spacing = '';
5482 $prev_state = IN_COMMENT;
5483 }
5484 else
5485 {
5486 last;
5487 }
5488 $saw_bk = check_trailing_slash ($where, $_);
5489 }
5491 # We save the conditional stack on entry, and then check to make
5492 # sure it is the same on exit. This lets us conditionally include
5493 # other files.
5494 my @saved_cond_stack = @cond_stack;
5495 my $cond = new Automake::Condition (@cond_stack);
5497 my $last_var_name = '';
5498 my $last_var_type = '';
5499 my $last_var_value = '';
5500 my $last_where;
5501 # FIXME: shouldn't use $_ in this loop; it is too big.
5502 while ($_)
5503 {
5504 $where->set ("$amfile:$.");
5506 # Make sure the line is \n-terminated.
5507 chomp;
5508 $_ .= "\n";
5510 # Don't look at MAINTAINER_MODE_TRUE here. That shouldn't be
5511 # used by users. @MAINT@ is an anachronism now.
5512 $_ =~ s/\@MAINT\@//g
5513 unless $seen_maint_mode;
5515 my $new_saw_bk = check_trailing_slash ($where, $_);
5517 if (/$IGNORE_PATTERN/o)
5518 {
5519 # Merely delete comments beginning with two hashes.
5520 }
5521 elsif (/$WHITE_PATTERN/o)
5522 {
5523 # Stick a single white line before the incoming macro or rule.
5524 $spacing = "\n";
5525 error $where, "blank line following trailing backslash"
5526 if $saw_bk;
5527 }
5528 elsif (/$COMMENT_PATTERN/o)
5529 {
5530 # Stick comments before the incoming macro or rule.
5531 $comment .= $spacing . $_;
5532 $spacing = '';
5533 error $where, "comment following trailing backslash"
5534 if $saw_bk && $comment eq '';
5535 $prev_state = IN_COMMENT;
5536 }
5537 elsif ($saw_bk)
5538 {
5539 if ($prev_state == IN_RULE_DEF)
5540 {
5541 my $cond = new Automake::Condition @cond_stack;
5542 $output_trailer .= $cond->subst_string;
5543 $output_trailer .= $_;
5544 }
5545 elsif ($prev_state == IN_COMMENT)
5546 {
5547 # If the line doesn't start with a `#', add it.
5548 # We do this because a continued comment like
5549 # # A = foo \
5550 # bar \
5551 # baz
5552 # is not portable. BSD make doesn't honor
5553 # escaped newlines in comments.
5554 s/^#?/#/;
5555 $comment .= $spacing . $_;
5556 }
5557 else # $prev_state == IN_VAR_DEF
5558 {
5559 $last_var_value .= ' '
5560 unless $last_var_value =~ /\s$/;
5561 $last_var_value .= $_;
5563 if (!/\\$/)
5564 {
5565 Automake::Variable::define ($last_var_name, VAR_MAKEFILE,
5566 $last_var_type, $cond,
5567 $last_var_value, $comment,
5568 $last_where, VAR_ASIS)
5569 if $cond != FALSE;
5570 $comment = $spacing = '';
5571 }
5572 }
5573 }
5575 elsif (/$IF_PATTERN/o)
5576 {
5577 $cond = cond_stack_if ($1, $2, $where);
5578 }
5579 elsif (/$ELSE_PATTERN/o)
5580 {
5581 $cond = cond_stack_else ($1, $2, $where);
5582 }
5583 elsif (/$ENDIF_PATTERN/o)
5584 {
5585 $cond = cond_stack_endif ($1, $2, $where);
5586 }
5588 elsif (/$RULE_PATTERN/o)
5589 {
5590 # Found a rule.
5591 $prev_state = IN_RULE_DEF;
5593 # For now we have to output all definitions of user rules
5594 # and can't diagnose duplicates (see the comment in
5595 # rule_define). So we go on and ignore the return value.
5596 Automake::Rule::define ($1, $amfile, RULE_USER, $cond, $where);
5598 check_variable_expansions ($_, $where);
5600 $output_trailer .= $comment . $spacing;
5601 my $cond = new Automake::Condition @cond_stack;
5602 $output_trailer .= $cond->subst_string;
5603 $output_trailer .= $_;
5604 $comment = $spacing = '';
5605 }
5606 elsif (/$ASSIGNMENT_PATTERN/o)
5607 {
5608 # Found a macro definition.
5609 $prev_state = IN_VAR_DEF;
5610 $last_var_name = $1;
5611 $last_var_type = $2;
5612 $last_var_value = $3;
5613 $last_where = $where->clone;
5614 if ($3 ne '' && substr ($3, -1) eq "\\")
5615 {
5616 # We preserve the `\' because otherwise the long lines
5617 # that are generated will be truncated by broken
5618 # `sed's.
5619 $last_var_value = $3 . "\n";
5620 }
5622 if (!/\\$/)
5623 {
5624 Automake::Variable::define ($last_var_name, VAR_MAKEFILE,
5625 $last_var_type, $cond,
5626 $last_var_value, $comment,
5627 $last_where, VAR_ASIS)
5628 if $cond != FALSE;
5629 $comment = $spacing = '';
5630 }
5631 }
5632 elsif (/$INCLUDE_PATTERN/o)
5633 {
5634 my $path = $1;
5636 if ($path =~ s/^\$\(top_srcdir\)\///)
5637 {
5638 push (@include_stack, "\$\(top_srcdir\)/$path");
5639 # Distribute any included file.
5641 # Always use the $(top_srcdir) prefix in DIST_COMMON,
5642 # otherwise OSF make will implicitly copy the included
5643 # file in the build tree during `make distdir' to satisfy
5644 # the dependency.
5645 # (subdircond2.test and subdircond3.test will fail.)
5646 push_dist_common ("\$\(top_srcdir\)/$path");
5647 }
5648 else
5649 {
5650 $path =~ s/\$\(srcdir\)\///;
5651 push (@include_stack, "\$\(srcdir\)/$path");
5652 # Always use the $(srcdir) prefix in DIST_COMMON,
5653 # otherwise OSF make will implicitly copy the included
5654 # file in the build tree during `make distdir' to satisfy
5655 # the dependency.
5656 # (subdircond2.test and subdircond3.test will fail.)
5657 push_dist_common ("\$\(srcdir\)/$path");
5658 $path = $relative_dir . "/" . $path if $relative_dir ne '.';
5659 }
5660 $where->push_context ("`$path' included from here");
5661 &read_am_file ($path, $where);
5662 $where->pop_context;
5663 }
5664 else
5665 {
5666 # This isn't an error; it is probably a continued rule.
5667 # In fact, this is what we assume.
5668 $prev_state = IN_RULE_DEF;
5669 check_variable_expansions ($_, $where);
5670 $output_trailer .= $comment . $spacing;
5671 my $cond = new Automake::Condition @cond_stack;
5672 $output_trailer .= $cond->subst_string;
5673 $output_trailer .= $_;
5674 $comment = $spacing = '';
5675 error $where, "`#' comment at start of rule is unportable"
5676 if $_ =~ /^\t\s*\#/;
5677 }
5679 $saw_bk = $new_saw_bk;
5680 $_ = $am_file->getline;
5681 }
5683 $output_trailer .= $comment;
5685 error ($where, "trailing backslash on last line")
5686 if $saw_bk;
5688 error ($where, (@cond_stack ? "unterminated conditionals: @cond_stack"
5689 : "too many conditionals closed in include file"))
5690 if "@saved_cond_stack" ne "@cond_stack";
5691 }
5694 # define_standard_variables ()
5695 # ----------------------------
5696 # A helper for read_main_am_file which initializes configure variables
5697 # and variables from header-vars.am.
5698 sub define_standard_variables
5699 {
5700 my $saved_output_vars = $output_vars;
5701 my ($comments, undef, $rules) =
5702 file_contents_internal (1, "$libdir/am/header-vars.am",
5703 new Automake::Location);
5705 foreach my $var (sort keys %configure_vars)
5706 {
5707 &define_configure_variable ($var);
5708 }
5710 $output_vars .= $comments . $rules;
5711 }
5713 # Read main am file.
5714 sub read_main_am_file
5715 {
5716 my ($amfile) = @_;
5718 # This supports the strange variable tricks we are about to play.
5719 prog_error (macros_dump () . "variable defined before read_main_am_file")
5720 if (scalar (variables) > 0);
5722 # Generate copyright header for generated Makefile.in.
5723 # We do discard the output of predefined variables, handled below.
5724 $output_vars = ("# $in_file_name generated by automake "
5725 . $VERSION . " from $am_file_name.\n");
5726 $output_vars .= '# ' . subst ('configure_input') . "\n";
5727 $output_vars .= $gen_copyright;
5729 # We want to predefine as many variables as possible. This lets
5730 # the user set them with `+=' in Makefile.am.
5731 &define_standard_variables;
5733 # Read user file, which might override some of our values.
5734 &read_am_file ($amfile, new Automake::Location);
5735 }
5739 ################################################################
5741 # $FLATTENED
5742 # &flatten ($STRING)
5743 # ------------------
5744 # Flatten the $STRING and return the result.
5745 sub flatten
5746 {
5747 $_ = shift;
5749 s/\\\n//somg;
5750 s/\s+/ /g;
5751 s/^ //;
5752 s/ $//;
5754 return $_;
5755 }
5758 # @PARAGRAPHS
5759 # &make_paragraphs ($MAKEFILE, [%TRANSFORM])
5760 # ------------------------------------------
5761 # Load a $MAKEFILE, apply the %TRANSFORM, and return it as a list of
5762 # paragraphs.
5763 sub make_paragraphs ($%)
5764 {
5765 my ($file, %transform) = @_;
5767 # Complete %transform with global options and make it a Perl
5768 # $command.
5769 my $command =
5770 "s/$IGNORE_PATTERN//gm;"
5771 . transform (%transform,
5772 'CYGNUS' => !! option 'cygnus',
5773 'MAINTAINER-MODE'
5774 => $seen_maint_mode ? subst ('MAINTAINER_MODE_TRUE') : '',
5776 'BZIP2' => !! option 'dist-bzip2',
5777 'COMPRESS' => !! option 'dist-tarZ',
5778 'GZIP' => ! option 'no-dist-gzip',
5779 'SHAR' => !! option 'dist-shar',
5780 'ZIP' => !! option 'dist-zip',
5782 'INSTALL-INFO' => ! option 'no-installinfo',
5783 'INSTALL-MAN' => ! option 'no-installman',
5784 'CK-NEWS' => !! option 'check-news',
5786 'SUBDIRS' => !! var ('SUBDIRS'),
5787 'TOPDIR' => backname ($relative_dir),
5788 'TOPDIR_P' => $relative_dir eq '.',
5790 'BUILD' => $seen_canonical == AC_CANONICAL_SYSTEM,
5791 'HOST' => $seen_canonical,
5792 'TARGET' => $seen_canonical == AC_CANONICAL_SYSTEM,
5794 'LIBTOOL' => !! var ('LIBTOOL'))
5795 # We don't need more than two consecutive new-lines.
5796 . 's/\n{3,}/\n\n/g';
5798 # Swallow the file and apply the COMMAND.
5799 my $fc_file = new Automake::XFile "< $file";
5800 # Looks stupid?
5801 verb "reading $file";
5802 my $saved_dollar_slash = $/;
5803 undef $/;
5804 $_ = $fc_file->getline;
5805 $/ = $saved_dollar_slash;
5806 eval $command;
5807 $fc_file->close;
5808 my $content = $_;
5810 # Split at unescaped new lines.
5811 my @lines = split (/(?<!\\)\n/, $content);
5812 my @res;
5814 while (defined ($_ = shift @lines))
5815 {
5816 my $paragraph = "$_";
5817 # If we are a rule, eat as long as we start with a tab.
5818 if (/$RULE_PATTERN/smo)
5819 {
5820 while (defined ($_ = shift @lines) && $_ =~ /^\t/)
5821 {
5822 $paragraph .= "\n$_";
5823 }
5824 unshift (@lines, $_);
5825 }
5827 # If we are a comments, eat as much comments as you can.
5828 elsif (/$COMMENT_PATTERN/smo)
5829 {
5830 while (defined ($_ = shift @lines)
5831 && $_ =~ /$COMMENT_PATTERN/smo)
5832 {
5833 $paragraph .= "\n$_";
5834 }
5835 unshift (@lines, $_);
5836 }
5838 push @res, $paragraph;
5839 $paragraph = '';
5840 }
5842 return @res;
5843 }
5847 # ($COMMENT, $VARIABLES, $RULES)
5848 # &file_contents_internal ($IS_AM, $FILE, $WHERE, [%TRANSFORM])
5849 # -------------------------------------------------------------
5850 # Return contents of a file from $libdir/am, automatically skipping
5851 # macros or rules which are already known. $IS_AM iff the caller is
5852 # reading an Automake file (as opposed to the user's Makefile.am).
5853 sub file_contents_internal ($$$%)
5854 {
5855 my ($is_am, $file, $where, %transform) = @_;
5857 $where->set ($file);
5859 my $result_vars = '';
5860 my $result_rules = '';
5861 my $comment = '';
5862 my $spacing = '';
5864 # The following flags are used to track rules spanning across
5865 # multiple paragraphs.
5866 my $is_rule = 0; # 1 if we are processing a rule.
5867 my $discard_rule = 0; # 1 if the current rule should not be output.
5869 # We save the conditional stack on entry, and then check to make
5870 # sure it is the same on exit. This lets us conditionally include
5871 # other files.
5872 my @saved_cond_stack = @cond_stack;
5873 my $cond = new Automake::Condition (@cond_stack);
5875 foreach (make_paragraphs ($file, %transform))
5876 {
5877 # FIXME: no line number available.
5878 $where->set ($file);
5880 # Sanity checks.
5881 error $where, "blank line following trailing backslash:\n$_"
5882 if /\\$/;
5883 error $where, "comment following trailing backslash:\n$_"
5884 if /\\#/;
5886 if (/^$/)
5887 {
5888 $is_rule = 0;
5889 # Stick empty line before the incoming macro or rule.
5890 $spacing = "\n";
5891 }
5892 elsif (/$COMMENT_PATTERN/mso)
5893 {
5894 $is_rule = 0;
5895 # Stick comments before the incoming macro or rule.
5896 $comment = "$_\n";
5897 }
5899 # Handle inclusion of other files.
5900 elsif (/$INCLUDE_PATTERN/o)
5901 {
5902 if ($cond != FALSE)
5903 {
5904 my $file = ($is_am ? "$libdir/am/" : '') . $1;
5905 $where->push_context ("`$file' included from here");
5906 # N-ary `.=' fails.
5907 my ($com, $vars, $rules)
5908 = file_contents_internal ($is_am, $file, $where, %transform);
5909 $where->pop_context;
5910 $comment .= $com;
5911 $result_vars .= $vars;
5912 $result_rules .= $rules;
5913 }
5914 }
5916 # Handling the conditionals.
5917 elsif (/$IF_PATTERN/o)
5918 {
5919 $cond = cond_stack_if ($1, $2, $file);
5920 }
5921 elsif (/$ELSE_PATTERN/o)
5922 {
5923 $cond = cond_stack_else ($1, $2, $file);
5924 }
5925 elsif (/$ENDIF_PATTERN/o)
5926 {
5927 $cond = cond_stack_endif ($1, $2, $file);
5928 }
5930 # Handling rules.
5931 elsif (/$RULE_PATTERN/mso)
5932 {
5933 $is_rule = 1;
5934 $discard_rule = 0;
5935 # Separate relationship from optional actions: the first
5936 # `new-line tab" not preceded by backslash (continuation
5937 # line).
5938 my $paragraph = $_;
5939 /^(.*?)(?:(?<!\\)\n(\t.*))?$/s;
5940 my ($relationship, $actions) = ($1, $2 || '');
5942 # Separate targets from dependencies: the first colon.
5943 $relationship =~ /^([^:]+\S+) *: *(.*)$/som;
5944 my ($targets, $dependencies) = ($1, $2);
5945 # Remove the escaped new lines.
5946 # I don't know why, but I have to use a tmp $flat_deps.
5947 my $flat_deps = &flatten ($dependencies);
5948 my @deps = split (' ', $flat_deps);
5950 foreach (split (' ' , $targets))
5951 {
5952 # FIXME: 1. We are not robust to people defining several targets
5953 # at once, only some of them being in %dependencies. The
5954 # actions from the targets in %dependencies are usually generated
5955 # from the content of %actions, but if some targets in $targets
5956 # are not in %dependencies the ELSE branch will output
5957 # a rule for all $targets (i.e. the targets which are both
5958 # in %dependencies and $targets will have two rules).
5960 # FIXME: 2. The logic here is not able to output a
5961 # multi-paragraph rule several time (e.g. for each condition
5962 # it is defined for) because it only knows the first paragraph.
5964 # FIXME: 3. We are not robust to people defining a subset
5965 # of a previously defined "multiple-target" rule. E.g.
5966 # `foo:' after `foo bar:'.
5968 # Output only if not in FALSE.
5969 if (defined $dependencies{$_} && $cond != FALSE)
5970 {
5971 &depend ($_, @deps);
5972 if ($actions{$_})
5973 {
5974 $actions{$_} .= "\n$actions" if $actions;
5975 }
5976 else
5977 {
5978 $actions{$_} = $actions;
5979 }
5980 }
5981 else
5982 {
5983 # Free-lance dependency. Output the rule for all the
5984 # targets instead of one by one.
5985 my @undefined_conds =
5986 Automake::Rule::define ($targets, $file,
5987 $is_am ? RULE_AUTOMAKE : RULE_USER,
5988 $cond, $where);
5989 for my $undefined_cond (@undefined_conds)
5990 {
5991 my $condparagraph = $paragraph;
5992 $condparagraph =~ s/^/$undefined_cond->subst_string/gme;
5993 $result_rules .= "$spacing$comment$condparagraph\n";
5994 }
5995 if (scalar @undefined_conds == 0)
5996 {
5997 # Remember to discard next paragraphs
5998 # if they belong to this rule.
5999 # (but see also FIXME: #2 above.)
6000 $discard_rule = 1;
6001 }
6002 $comment = $spacing = '';
6003 last;
6004 }
6005 }
6006 }
6008 elsif (/$ASSIGNMENT_PATTERN/mso)
6009 {
6010 my ($var, $type, $val) = ($1, $2, $3);
6011 error $where, "variable `$var' with trailing backslash"
6012 if /\\$/;
6014 $is_rule = 0;
6016 Automake::Variable::define ($var,
6017 $is_am ? VAR_AUTOMAKE : VAR_MAKEFILE,
6018 $type, $cond, $val, $comment, $where,
6019 VAR_ASIS)
6020 if $cond != FALSE;
6022 $comment = $spacing = '';
6023 }
6024 else
6025 {
6026 # This isn't an error; it is probably some tokens which
6027 # configure is supposed to replace, such as `@SET-MAKE@',
6028 # or some part of a rule cut by an if/endif.
6029 if (! $cond->false && ! ($is_rule && $discard_rule))
6030 {
6031 s/^/$cond->subst_string/gme;
6032 $result_rules .= "$spacing$comment$_\n";
6033 }
6034 $comment = $spacing = '';
6035 }
6036 }
6038 error ($where, @cond_stack ?
6039 "unterminated conditionals: @cond_stack" :
6040 "too many conditionals closed in include file")
6041 if "@saved_cond_stack" ne "@cond_stack";
6043 return ($comment, $result_vars, $result_rules);
6044 }
6047 # $CONTENTS
6048 # &file_contents ($BASENAME, $WHERE, [%TRANSFORM])
6049 # ------------------------------------------------
6050 # Return contents of a file from $libdir/am, automatically skipping
6051 # macros or rules which are already known.
6052 sub file_contents ($$%)
6053 {
6054 my ($basename, $where, %transform) = @_;
6055 my ($comments, $variables, $rules) =
6056 file_contents_internal (1, "$libdir/am/$basename.am", $where,
6057 %transform);
6058 return "$comments$variables$rules";
6059 }
6062 # $REGEXP
6063 # &transform (%PAIRS)
6064 # -------------------
6065 # For each ($TOKEN, $VAL) in %PAIRS produce a replacement expression
6066 # suitable for file_contents which:
6067 # - replaces %$TOKEN% with $VAL,
6068 # - enables/disables ?$TOKEN? and ?!$TOKEN?,
6069 # - replaces %?$TOKEN% with TRUE or FALSE.
6070 sub transform (%)
6071 {
6072 my (%pairs) = @_;
6073 my $result = '';
6075 while (my ($token, $val) = each %pairs)
6076 {
6077 $result .= "s/\Q%$token%\E/\Q$val\E/gm;";
6078 if ($val)
6079 {
6080 $result .= "s/\Q?$token?\E//gm;s/^.*\Q?!$token?\E.*\\n//gm;";
6081 $result .= "s/\Q%?$token%\E/TRUE/gm;";
6082 }
6083 else
6084 {
6085 $result .= "s/\Q?!$token?\E//gm;s/^.*\Q?$token?\E.*\\n//gm;";
6086 $result .= "s/\Q%?$token%\E/FALSE/gm;";
6087 }
6088 }
6090 return $result;
6091 }
6094 # &append_exeext ($MACRO)
6095 # -----------------------
6096 # Macro is an Automake magic macro which primary is PROGRAMS, e.g.
6097 # bin_PROGRAMS. Make sure these programs have $(EXEEXT) appended.
6098 sub append_exeext ($)
6099 {
6100 my ($macro) = @_;
6102 prog_error "append_exeext ($macro)"
6103 unless $macro =~ /_PROGRAMS$/;
6105 transform_variable_recursively
6106 ($macro, $macro, 'am__EXEEXT', 0, INTERNAL,
6107 sub {
6108 my ($subvar, $val, $cond, $full_cond) = @_;
6109 # Append $(EXEEXT) unless the user did it already, or it's a
6110 # @substitution@.
6111 $val .= '$(EXEEXT)' unless $val =~ /(?:\$\(EXEEXT\)$|^[@]\w+[@]$)/;
6112 return $val;
6113 });
6114 }
6117 # @PREFIX
6118 # &am_primary_prefixes ($PRIMARY, $CAN_DIST, @PREFIXES)
6119 # -----------------------------------------------------
6120 # Find all variable prefixes that are used for install directories. A
6121 # prefix `zar' qualifies iff:
6122 #
6123 # * `zardir' is a variable.
6124 # * `zar_PRIMARY' is a variable.
6125 #
6126 # As a side effect, it looks for misspellings. It is an error to have
6127 # a variable ending in a "reserved" suffix whose prefix is unknown, e.g.
6128 # "bin_PROGRAMS". However, unusual prefixes are allowed if a variable
6129 # of the same name (with "dir" appended) exists. For instance, if the
6130 # variable "zardir" is defined, then "zar_PROGRAMS" becomes valid.
6131 # This is to provide a little extra flexibility in those cases which
6132 # need it.
6133 sub am_primary_prefixes ($$@)
6134 {
6135 my ($primary, $can_dist, @prefixes) = @_;
6137 local $_;
6138 my %valid = map { $_ => 0 } @prefixes;
6139 $valid{'EXTRA'} = 0;
6140 foreach my $var (variables)
6141 {
6142 # Automake is allowed to define variables that look like primaries
6143 # but which aren't. E.g. INSTALL_sh_DATA.
6144 # Autoconf can also define variables like INSTALL_DATA, so
6145 # ignore all configure variables (at least those which are not
6146 # redefined in Makefile.am).
6147 # FIXME: We should make sure that these variables are not
6148 # conditionally defined (or else adjust the condition below).
6149 my $def = $var->def (TRUE);
6150 next if $def && $def->owner != VAR_MAKEFILE;
6152 my $varname = $var->name;
6154 if ($varname =~ /^(nobase_)?(dist_|nodist_)?(.*)_$primary$/)
6155 {
6156 my ($base, $dist, $X) = ($1 || '', $2 || '', $3 || '');
6157 if ($dist ne '' && ! $can_dist)
6158 {
6159 err_var ($var,
6160 "invalid variable `$varname': `dist' is forbidden");
6161 }
6162 # Standard directories must be explicitly allowed.
6163 elsif (! defined $valid{$X} && exists $standard_prefix{$X})
6164 {
6165 err_var ($var,
6166 "`${X}dir' is not a legitimate directory " .
6167 "for `$primary'");
6168 }
6169 # A not explicitly valid directory is allowed if Xdir is defined.
6170 elsif (! defined $valid{$X} &&
6171 $var->requires_variables ("`$varname' is used", "${X}dir"))
6172 {
6173 # Nothing to do. Any error message has been output
6174 # by $var->requires_variables.
6175 }
6176 else
6177 {
6178 # Ensure all extended prefixes are actually used.
6179 $valid{"$base$dist$X"} = 1;
6180 }
6181 }
6182 }
6184 # Return only those which are actually defined.
6185 return sort grep { var ($_ . '_' . $primary) } keys %valid;
6186 }
6189 # Handle `where_HOW' variable magic. Does all lookups, generates
6190 # install code, and possibly generates code to define the primary
6191 # variable. The first argument is the name of the .am file to munge,
6192 # the second argument is the primary variable (e.g. HEADERS), and all
6193 # subsequent arguments are possible installation locations.
6194 #
6195 # Returns list of [$location, $value] pairs, where
6196 # $value's are the values in all where_HOW variable, and $location
6197 # there associated location (the place here their parent variables were
6198 # defined).
6199 #
6200 # FIXME: this should be rewritten to be cleaner. It should be broken
6201 # up into multiple functions.
6202 #
6203 # Usage is: am_install_var (OPTION..., file, HOW, where...)
6204 sub am_install_var
6205 {
6206 my (@args) = @_;
6208 my $do_require = 1;
6209 my $can_dist = 0;
6210 my $default_dist = 0;
6211 while (@args)
6212 {
6213 if ($args[0] eq '-noextra')
6214 {
6215 $do_require = 0;
6216 }
6217 elsif ($args[0] eq '-candist')
6218 {
6219 $can_dist = 1;
6220 }
6221 elsif ($args[0] eq '-defaultdist')
6222 {
6223 $default_dist = 1;
6224 $can_dist = 1;
6225 }
6226 elsif ($args[0] !~ /^-/)
6227 {
6228 last;
6229 }
6230 shift (@args);
6231 }
6233 my ($file, $primary, @prefix) = @args;
6235 # Now that configure substitutions are allowed in where_HOW
6236 # variables, it is an error to actually define the primary. We
6237 # allow `JAVA', as it is customarily used to mean the Java
6238 # interpreter. This is but one of several Java hacks. Similarly,
6239 # `PYTHON' is customarily used to mean the Python interpreter.
6240 reject_var $primary, "`$primary' is an anachronism"
6241 unless $primary eq 'JAVA' || $primary eq 'PYTHON';
6243 # Get the prefixes which are valid and actually used.
6244 @prefix = am_primary_prefixes ($primary, $can_dist, @prefix);
6246 # If a primary includes a configure substitution, then the EXTRA_
6247 # form is required. Otherwise we can't properly do our job.
6248 my $require_extra;
6250 my @used = ();
6251 my @result = ();
6253 # True if the iteration is the first one. Used for instance to
6254 # output parts of the associated file only once.
6255 my $first = 1;
6256 foreach my $X (@prefix)
6257 {
6258 my $nodir_name = $X;
6259 my $one_name = $X . '_' . $primary;
6260 my $one_var = var $one_name;
6262 my $strip_subdir = 1;
6263 # If subdir prefix should be preserved, do so.
6264 if ($nodir_name =~ /^nobase_/)
6265 {
6266 $strip_subdir = 0;
6267 $nodir_name =~ s/^nobase_//;
6268 }
6270 # If files should be distributed, do so.
6271 my $dist_p = 0;
6272 if ($can_dist)
6273 {
6274 $dist_p = (($default_dist && $nodir_name !~ /^nodist_/)
6275 || (! $default_dist && $nodir_name =~ /^dist_/));
6276 $nodir_name =~ s/^(dist|nodist)_//;
6277 }
6280 # Use the location of the currently processed variable.
6281 # We are not processing a particular condition, so pick the first
6282 # available.
6283 my $tmpcond = $one_var->conditions->one_cond;
6284 my $where = $one_var->rdef ($tmpcond)->location->clone;
6286 # Append actual contents of where_PRIMARY variable to
6287 # @result, skipping @substitutions@.
6288 foreach my $locvals ($one_var->value_as_list_recursive (location => 1))
6289 {
6290 my ($loc, $value) = @$locvals;
6291 # Skip configure substitutions.
6292 if ($value =~ /^\@.*\@$/)
6293 {
6294 if ($nodir_name eq 'EXTRA')
6295 {
6296 error ($where,
6297 "`$one_name' contains configure substitution, "
6298 . "but shouldn't");
6299 }
6300 # Check here to make sure variables defined in
6301 # configure.ac do not imply that EXTRA_PRIMARY
6302 # must be defined.
6303 elsif (! defined $configure_vars{$one_name})
6304 {
6305 $require_extra = $one_name
6306 if $do_require;
6307 }
6308 }
6309 else
6310 {
6311 push (@result, $locvals);
6312 }
6313 }
6314 # A blatant hack: we rewrite each _PROGRAMS primary to include
6315 # EXEEXT.
6316 append_exeext ($one_name)
6317 if $primary eq 'PROGRAMS';
6318 # "EXTRA" shouldn't be used when generating clean targets,
6319 # all, or install targets. We used to warn if EXTRA_FOO was
6320 # defined uselessly, but this was annoying.
6321 next
6322 if $nodir_name eq 'EXTRA';
6324 if ($nodir_name eq 'check')
6325 {
6326 push (@check, '$(' . $one_name . ')');
6327 }
6328 else
6329 {
6330 push (@used, '$(' . $one_name . ')');
6331 }
6333 # Is this to be installed?
6334 my $install_p = $nodir_name ne 'noinst' && $nodir_name ne 'check';
6336 # If so, with install-exec? (or install-data?).
6337 my $exec_p = ($nodir_name =~ /$EXEC_DIR_PATTERN/o);
6339 my $check_options_p = $install_p && !! option 'std-options';
6341 # Use the location of the currently processed variable as context.
6342 $where->push_context ("while processing `$one_name'");
6344 # Singular form of $PRIMARY.
6345 (my $one_primary = $primary) =~ s/S$//;
6346 $output_rules .= &file_contents ($file, $where,
6347 FIRST => $first,
6349 PRIMARY => $primary,
6350 ONE_PRIMARY => $one_primary,
6351 DIR => $X,
6352 NDIR => $nodir_name,
6353 BASE => $strip_subdir,
6355 EXEC => $exec_p,
6356 INSTALL => $install_p,
6357 DIST => $dist_p,
6358 'CK-OPTS' => $check_options_p);
6360 $first = 0;
6361 }
6363 # The JAVA variable is used as the name of the Java interpreter.
6364 # The PYTHON variable is used as the name of the Python interpreter.
6365 if (@used && $primary ne 'JAVA' && $primary ne 'PYTHON')
6366 {
6367 # Define it.
6368 define_pretty_variable ($primary, TRUE, INTERNAL, @used);
6369 $output_vars .= "\n";
6370 }
6372 err_var ($require_extra,
6373 "`$require_extra' contains configure substitution,\n"
6374 . "but `EXTRA_$primary' not defined")
6375 if ($require_extra && ! var ('EXTRA_' . $primary));
6377 # Push here because PRIMARY might be configure time determined.
6378 push (@all, '$(' . $primary . ')')
6379 if @used && $primary ne 'JAVA' && $primary ne 'PYTHON';
6381 # Make the result unique. This lets the user use conditionals in
6382 # a natural way, but still lets us program lazily -- we don't have
6383 # to worry about handling a particular object more than once.
6384 # We will keep only one location per object.
6385 my %result = ();
6386 for my $pair (@result)
6387 {
6388 my ($loc, $val) = @$pair;
6389 $result{$val} = $loc;
6390 }
6391 my @l = sort keys %result;
6392 return map { [$result{$_}->clone, $_] } @l;
6393 }
6396 ################################################################
6398 # Each key in this hash is the name of a directory holding a
6399 # Makefile.in. These variables are local to `is_make_dir'.
6400 my %make_dirs = ();
6401 my $make_dirs_set = 0;
6403 sub is_make_dir
6404 {
6405 my ($dir) = @_;
6406 if (! $make_dirs_set)
6407 {
6408 foreach my $iter (@configure_input_files)
6409 {
6410 $make_dirs{dirname ($iter)} = 1;
6411 }
6412 # We also want to notice Makefile.in's.
6413 foreach my $iter (@other_input_files)
6414 {
6415 if ($iter =~ /Makefile\.in$/)
6416 {
6417 $make_dirs{dirname ($iter)} = 1;
6418 }
6419 }
6420 $make_dirs_set = 1;
6421 }
6422 return defined $make_dirs{$dir};
6423 }
6425 ################################################################
6427 # This variable is local to the "require file" set of functions.
6428 my @require_file_paths = ();
6431 # &maybe_push_required_file ($DIR, $FILE, $FULLFILE)
6432 # --------------------------------------------------
6433 # See if we want to push this file onto dist_common. This function
6434 # encodes the rules for deciding when to do so.
6435 sub maybe_push_required_file
6436 {
6437 my ($dir, $file, $fullfile) = @_;
6439 if ($dir eq $relative_dir)
6440 {
6441 push_dist_common ($file);
6442 return 1;
6443 }
6444 elsif ($relative_dir eq '.' && ! &is_make_dir ($dir))
6445 {
6446 # If we are doing the topmost directory, and the file is in a
6447 # subdir which does not have a Makefile, then we distribute it
6448 # here.
6449 push_dist_common ($fullfile);
6450 return 1;
6451 }
6452 return 0;
6453 }
6456 # &require_file_internal ($WHERE, $MYSTRICT, @FILES)
6457 # --------------------------------------------------
6458 # Verify that the file must exist in the current directory.
6459 # $MYSTRICT is the strictness level at which this file becomes required.
6460 #
6461 # Must set require_file_paths before calling this function.
6462 # require_file_paths is set to hold a single directory (the one in
6463 # which the first file was found) before return.
6464 sub require_file_internal ($$@)
6465 {
6466 my ($where, $mystrict, @files) = @_;
6468 foreach my $file (@files)
6469 {
6470 my $fullfile;
6471 my $errdir;
6472 my $errfile;
6473 my $save_dir;
6475 my $found_it = 0;
6476 my $dangling_sym = 0;
6477 foreach my $dir (@require_file_paths)
6478 {
6479 $fullfile = $dir . "/" . $file;
6480 $errdir = $dir unless $errdir;
6482 # Use different name for "error filename". Otherwise on
6483 # an error the bad file will be reported as e.g.
6484 # `../../install-sh' when using the default
6485 # config_aux_path.
6486 $errfile = $errdir . '/' . $file;
6488 if (-l $fullfile && ! -f $fullfile)
6489 {
6490 $dangling_sym = 1;
6491 last;
6492 }
6493 elsif (-f $fullfile)
6494 {
6495 $found_it = 1;
6496 maybe_push_required_file ($dir, $file, $fullfile);
6497 $save_dir = $dir;
6498 last;
6499 }
6500 }
6502 # `--force-missing' only has an effect if `--add-missing' is
6503 # specified.
6504 if ($found_it && (! $add_missing || ! $force_missing))
6505 {
6506 # Prune the path list.
6507 @require_file_paths = $save_dir;
6508 }
6509 else
6510 {
6511 # If we've already looked for it, we're done. You might
6512 # wonder why we don't do this before searching for the
6513 # file. If we do that, then something like
6514 # AC_OUTPUT(subdir/foo foo) will fail to put foo.in into
6515 # DIST_COMMON.
6516 if (! $found_it)
6517 {
6518 next if defined $require_file_found{$fullfile};
6519 $require_file_found{$fullfile} = 1;
6520 }
6522 if ($strictness >= $mystrict)
6523 {
6524 if ($dangling_sym && $add_missing)
6525 {
6526 unlink ($fullfile);
6527 }
6529 my $trailer = '';
6530 my $suppress = 0;
6532 # Only install missing files according to our desired
6533 # strictness level.
6534 my $message = "required file `$errfile' not found";
6535 if ($add_missing)
6536 {
6537 if (-f ("$libdir/$file"))
6538 {
6539 $suppress = 1;
6541 # Install the missing file. Symlink if we
6542 # can, copy if we must. Note: delete the file
6543 # first, in case it is a dangling symlink.
6544 $message = "installing `$errfile'";
6545 # Windows Perl will hang if we try to delete a
6546 # file that doesn't exist.
6547 unlink ($errfile) if -f $errfile;
6548 if ($symlink_exists && ! $copy_missing)
6549 {
6550 if (! symlink ("$libdir/$file", $errfile))
6551 {
6552 $suppress = 0;
6553 $trailer = "; error while making link: $!";
6554 }
6555 }
6556 elsif (system ('cp', "$libdir/$file", $errfile))
6557 {
6558 $suppress = 0;
6559 $trailer = "\n error while copying";
6560 }
6561 }
6563 if (! maybe_push_required_file (dirname ($errfile),
6564 $file, $errfile))
6565 {
6566 if (! $found_it)
6567 {
6568 # We have added the file but could not push it
6569 # into DIST_COMMON (probably because this is
6570 # an auxiliary file and we are not processing
6571 # the top level Makefile). This is unfortunate,
6572 # since it means we are using a file which is not
6573 # distributed!
6575 # Get Automake to be run again: on the second
6576 # run the file will be found, and pushed into
6577 # the toplevel DIST_COMMON automatically.
6578 $automake_needs_to_reprocess_all_files = 1;
6579 }
6580 }
6582 # Prune the path list.
6583 @require_file_paths = &dirname ($errfile);
6584 }
6586 # If --force-missing was specified, and we have
6587 # actually found the file, then do nothing.
6588 next
6589 if $found_it && $force_missing;
6591 # If we couldn' install the file, but it is a target in
6592 # the Makefile, don't print anything. This allows files
6593 # like README, AUTHORS, or THANKS to be generated.
6594 next
6595 if !$suppress && rule $file;
6597 msg ($suppress ? 'note' : 'error', $where, "$message$trailer");
6598 }
6599 }
6600 }
6601 }
6603 # &require_file ($WHERE, $MYSTRICT, @FILES)
6604 # -----------------------------------------
6605 sub require_file ($$@)
6606 {
6607 my ($where, $mystrict, @files) = @_;
6608 @require_file_paths = $relative_dir;
6609 require_file_internal ($where, $mystrict, @files);
6610 }
6612 # &require_file_with_macro ($COND, $MACRO, $MYSTRICT, @FILES)
6613 # -----------------------------------------------------------
6614 sub require_file_with_macro ($$$@)
6615 {
6616 my ($cond, $macro, $mystrict, @files) = @_;
6617 $macro = rvar ($macro) unless ref $macro;
6618 require_file ($macro->rdef ($cond)->location, $mystrict, @files);
6619 }
6622 # &require_conf_file ($WHERE, $MYSTRICT, @FILES)
6623 # ----------------------------------------------
6624 # Looks in configuration path, as specified by AC_CONFIG_AUX_DIR.
6625 sub require_conf_file ($$@)
6626 {
6627 my ($where, $mystrict, @files) = @_;
6628 @require_file_paths = @config_aux_path;
6629 require_file_internal ($where, $mystrict, @files);
6630 my $dir = $require_file_paths[0];
6631 @config_aux_path = @require_file_paths;
6632 # Avoid unsightly '/.'s.
6633 $config_aux_dir = '$(top_srcdir)' . ($dir eq '.' ? "" : "/$dir");
6634 }
6637 # &require_conf_file_with_macro ($COND, $MACRO, $MYSTRICT, @FILES)
6638 # ----------------------------------------------------------------
6639 sub require_conf_file_with_macro ($$$@)
6640 {
6641 my ($cond, $macro, $mystrict, @files) = @_;
6642 require_conf_file (rvar ($macro)->rdef ($cond)->location,
6643 $mystrict, @files);
6644 }
6646 ################################################################
6648 # &require_build_directory ($DIRECTORY)
6649 # ------------------------------------
6650 # Emit rules to create $DIRECTORY if needed, and return
6651 # the file that any target requiring this directory should be made
6652 # dependent upon.
6653 sub require_build_directory ($)
6654 {
6655 my $directory = shift;
6656 my $dirstamp = "$directory/\$(am__dirstamp)";
6658 # Don't emit the rule twice.
6659 if (! defined $directory_map{$directory})
6660 {
6661 $directory_map{$directory} = 1;
6663 # Set a variable for the dirstamp basename.
6664 define_pretty_variable ('am__dirstamp', TRUE, INTERNAL,
6665 '$(am__leading_dot)dirstamp');
6667 # Directory must be removed by `make distclean'.
6668 $clean_files{$dirstamp} = DIST_CLEAN;
6670 $output_rules .= ("$dirstamp:\n"
6671 . "\t\@\$(mkdir_p) $directory\n"
6672 . "\t\@: > $dirstamp\n");
6673 }
6675 return $dirstamp;
6676 }
6678 # &require_build_directory_maybe ($FILE)
6679 # --------------------------------------
6680 # If $FILE lies in a subdirectory, emit a rule to create this
6681 # directory and return the file that $FILE should be made
6682 # dependent upon. Otherwise, just return the empty string.
6683 sub require_build_directory_maybe ($)
6684 {
6685 my $file = shift;
6686 my $directory = dirname ($file);
6688 if ($directory ne '.')
6689 {
6690 return require_build_directory ($directory);
6691 }
6692 else
6693 {
6694 return '';
6695 }
6696 }
6698 ################################################################
6700 # Push a list of files onto dist_common.
6701 sub push_dist_common
6702 {
6703 prog_error "push_dist_common run after handle_dist"
6704 if $handle_dist_run;
6705 Automake::Variable::define ('DIST_COMMON', VAR_AUTOMAKE, '+', TRUE, "@_",
6706 '', INTERNAL, VAR_PRETTY);
6707 }
6710 ################################################################
6712 # generate_makefile ($MAKEFILE_AM, $MAKEFILE_IN)
6713 # ----------------------------------------------
6714 # Generate a Makefile.in given the name of the corresponding Makefile and
6715 # the name of the file output by config.status.
6716 sub generate_makefile ($$)
6717 {
6718 my ($makefile_am, $makefile_in) = @_;
6720 # Reset all the Makefile.am related variables.
6721 initialize_per_input;
6723 # AUTOMAKE_OPTIONS can contains -W flags to disable or enable
6724 # warnings for this file. So hold any warning issued before
6725 # we have processed AUTOMAKE_OPTIONS.
6726 buffer_messages ('warning');
6728 # Name of input file ("Makefile.am") and output file
6729 # ("Makefile.in"). These have no directory components.
6730 $am_file_name = basename ($makefile_am);
6731 $in_file_name = basename ($makefile_in);
6733 # $OUTPUT is encoded. If it contains a ":" then the first element
6734 # is the real output file, and all remaining elements are input
6735 # files. We don't scan or otherwise deal with these input files,
6736 # other than to mark them as dependencies. See
6737 # &scan_autoconf_files for details.
6738 my ($makefile, @inputs) = split (/:/, $output_files{$makefile_in});
6740 $relative_dir = dirname ($makefile);
6741 $am_relative_dir = dirname ($makefile_am);
6743 read_main_am_file ($makefile_am);
6744 if (handle_options)
6745 {
6746 # Process buffered warnings.
6747 flush_messages;
6748 # Fatal error. Just return, so we can continue with next file.
6749 return;
6750 }
6751 # Process buffered warnings.
6752 flush_messages;
6754 # There are a few install-related variables that you should not define.
6755 foreach my $var ('PRE_INSTALL', 'POST_INSTALL', 'NORMAL_INSTALL')
6756 {
6757 my $v = var $var;
6758 if ($v)
6759 {
6760 my $def = $v->def (TRUE);
6761 prog_error "$var not defined in condition TRUE"
6762 unless $def;
6763 reject_var $var, "`$var' should not be defined"
6764 if $def->owner != VAR_AUTOMAKE;
6765 }
6766 }
6768 # Catch some obsolete variables.
6769 msg_var ('obsolete', 'INCLUDES',
6770 "`INCLUDES' is the old name for `AM_CPPFLAGS' (or `*_CPPFLAGS')")
6771 if var ('INCLUDES');
6773 # At the toplevel directory, we might need config.guess, config.sub
6774 # or libtool scripts (ltconfig and ltmain.sh).
6775 if ($relative_dir eq '.')
6776 {
6777 # AC_CANONICAL_HOST and AC_CANONICAL_SYSTEM need config.guess and
6778 # config.sub.
6779 require_conf_file ($canonical_location, FOREIGN,
6780 'config.guess', 'config.sub')
6781 if $seen_canonical;
6782 }
6784 # Must do this after reading .am file.
6785 define_variable ('subdir', $relative_dir, INTERNAL);
6787 # If DIST_SUBDIRS is defined, make sure SUBDIRS is, so that
6788 # recursive rules are enabled.
6789 define_pretty_variable ('SUBDIRS', TRUE, INTERNAL, '')
6790 if var 'DIST_SUBDIRS' && ! var 'SUBDIRS';
6792 # Check first, because we might modify some state.
6793 check_cygnus;
6794 check_gnu_standards;
6795 check_gnits_standards;
6797 handle_configure ($makefile_am, $makefile_in, $makefile, @inputs);
6798 handle_gettext;
6799 handle_libraries;
6800 handle_ltlibraries;
6801 handle_programs;
6802 handle_scripts;
6804 # This must run first so that the ANSI2KNR definition is generated
6805 # before it is used by the _.c rules. We have to do this because
6806 # a variable which is used in a dependency must be defined before
6807 # the target, or else make won't properly see it.
6808 handle_compile;
6809 # This must be run after all the sources are scanned.
6810 handle_languages;
6812 # We have to run this after dealing with all the programs.
6813 handle_libtool;
6815 # Variables used by distdir.am and tags.am.
6816 define_pretty_variable ('SOURCES', TRUE, INTERNAL, @sources);
6817 define_pretty_variable ('DIST_SOURCES', TRUE, INTERNAL, @dist_sources);
6819 handle_multilib;
6820 handle_texinfo;
6821 handle_emacs_lisp;
6822 handle_python;
6823 handle_java;
6824 handle_man_pages;
6825 handle_data;
6826 handle_headers;
6827 handle_subdirs;
6828 handle_tags;
6829 handle_minor_options;
6830 handle_tests;
6832 # This must come after most other rules.
6833 handle_dist;
6835 handle_footer;
6836 do_check_merge_target;
6837 handle_all ($makefile);
6839 # FIXME: Gross!
6840 if (var ('lib_LTLIBRARIES') && var ('bin_PROGRAMS'))
6841 {
6842 $output_rules .= "install-binPROGRAMS: install-libLTLIBRARIES\n\n";
6843 }
6845 handle_install;
6846 handle_clean ($makefile);
6847 handle_factored_dependencies;
6849 # Comes last, because all the above procedures may have
6850 # defined or overridden variables.
6851 $output_vars .= output_variables;
6853 check_typos;
6855 if (! -d ($output_directory . '/' . $am_relative_dir))
6856 {
6857 mkdir ($output_directory . '/' . $am_relative_dir, 0755);
6858 }
6860 my ($out_file) = $output_directory . '/' . $makefile_in;
6862 # We make sure that `all:' is the first target.
6863 my $output =
6864 "$output_vars$output_all$output_header$output_rules$output_trailer";
6866 # Decide whether we must update the output file or not.
6867 # We have to update in the following situations.
6868 # * $force_generation is set.
6869 # * any of the output dependencies is younger than the output
6870 # * the contents of the output is different (this can happen
6871 # if the project has been populated with a file listed in
6872 # @common_files since the last run).
6873 # Output's dependencies are split in two sets:
6874 # * dependencies which are also configure dependencies
6875 # These do not change between each Makefile.am
6876 # * other dependencies, specific to the Makefile.am being processed
6877 # (such as the Makefile.am itself, or any Makefile fragment
6878 # it includes).
6879 my $timestamp = mtime $out_file;
6880 if (! $force_generation
6881 && $configure_deps_greatest_timestamp < $timestamp
6882 && $output_deps_greatest_timestamp < $timestamp
6883 && $output eq contents ($out_file))
6884 {
6885 verb "$out_file unchanged";
6886 # No need to update.
6887 return;
6888 }
6890 if (-e $out_file)
6891 {
6892 unlink ($out_file)
6893 or fatal "cannot remove $out_file: $!\n";
6894 }
6896 my $gm_file = new Automake::XFile "> $out_file";
6897 verb "creating $out_file";
6898 print $gm_file $output;
6899 }
6901 ################################################################
6906 ################################################################
6908 # Print usage information.
6909 sub usage ()
6910 {
6911 print "Usage: $0 [OPTION] ... [Makefile]...
6913 Generate Makefile.in for configure from Makefile.am.
6915 Operation modes:
6916 --help print this help, then exit
6917 --version print version number, then exit
6918 -v, --verbose verbosely list files processed
6919 --no-force only update Makefile.in's that are out of date
6920 -W, --warnings=CATEGORY report the warnings falling in CATEGORY
6922 Dependency tracking:
6923 -i, --ignore-deps disable dependency tracking code
6924 --include-deps enable dependency tracking code
6926 Flavors:
6927 --cygnus assume program is part of Cygnus-style tree
6928 --foreign set strictness to foreign
6929 --gnits set strictness to gnits
6930 --gnu set strictness to gnu
6932 Library files:
6933 -a, --add-missing add missing standard files to package
6934 --libdir=DIR directory storing library files
6935 -c, --copy with -a, copy missing files (default is symlink)
6936 -f, --force-missing force update of standard files
6938 ";
6939 Automake::ChannelDefs::usage;
6941 my ($last, @lcomm);
6942 $last = '';
6943 foreach my $iter (sort ((@common_files, @common_sometimes)))
6944 {
6945 push (@lcomm, $iter) unless $iter eq $last;
6946 $last = $iter;
6947 }
6949 my @four;
6950 print "\nFiles which are automatically distributed, if found:\n";
6951 format USAGE_FORMAT =
6952 @<<<<<<<<<<<<<<<< @<<<<<<<<<<<<<<<< @<<<<<<<<<<<<<<<< @<<<<<<<<<<<<<<<<
6953 $four[0], $four[1], $four[2], $four[3]
6954 .
6955 $~ = "USAGE_FORMAT";
6957 my $cols = 4;
6958 my $rows = int(@lcomm / $cols);
6959 my $rest = @lcomm % $cols;
6961 if ($rest)
6962 {
6963 $rows++;
6964 }
6965 else
6966 {
6967 $rest = $cols;
6968 }
6970 for (my $y = 0; $y < $rows; $y++)
6971 {
6972 @four = ("", "", "", "");
6973 for (my $x = 0; $x < $cols; $x++)
6974 {
6975 last if $y + 1 == $rows && $x == $rest;
6977 my $idx = (($x > $rest)
6978 ? ($rows * $rest + ($rows - 1) * ($x - $rest))
6979 : ($rows * $x));
6981 $idx += $y;
6982 $four[$x] = $lcomm[$idx];
6983 }
6984 write;
6985 }
6987 print "\nReport bugs to <bug-automake\@gnu.org>.\n";
6989 # --help always returns 0 per GNU standards.
6990 exit 0;
6991 }
6994 # &version ()
6995 # -----------
6996 # Print version information
6997 sub version ()
6998 {
6999 print <<EOF;
7000 automake (GNU $PACKAGE) $VERSION
7001 Written by Tom Tromey <tromey\@redhat.com>.
7003 Copyright 2003 Free Software Foundation, Inc.
7004 This is free software; see the source for copying conditions. There is NO
7005 warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
7006 EOF
7007 # --version always returns 0 per GNU standards.
7008 exit 0;
7009 }
7011 ################################################################
7013 # Parse command line.
7014 sub parse_arguments ()
7015 {
7016 # Start off as gnu.
7017 set_strictness ('gnu');
7019 my $cli_where = new Automake::Location;
7020 my %cli_options =
7021 (
7022 'libdir:s' => \$libdir,
7023 'gnu' => sub { set_strictness ('gnu'); },
7024 'gnits' => sub { set_strictness ('gnits'); },
7025 'cygnus' => sub { set_global_option ('cygnus', $cli_where); },
7026 'foreign' => sub { set_strictness ('foreign'); },
7027 'include-deps' => sub { unset_global_option ('no-dependencies'); },
7028 'i|ignore-deps' => sub { set_global_option ('no-dependencies',
7029 $cli_where); },
7030 'no-force' => sub { $force_generation = 0; },
7031 'f|force-missing' => \$force_missing,
7032 'o|output-dir:s' => \$output_directory,
7033 'a|add-missing' => \$add_missing,
7034 'c|copy' => \$copy_missing,
7035 'v|verbose' => sub { setup_channel 'verb', silent => 0; },
7036 'W|warnings:s' => \&parse_warnings,
7037 # These long options (--Werror and --Wno-error) for backward
7038 # compatibility. Use -Werror and -Wno-error today.
7039 'Werror' => sub { parse_warnings 'W', 'error'; },
7040 'Wno-error' => sub { parse_warnings 'W', 'no-error'; },
7041 );
7042 use Getopt::Long;
7043 Getopt::Long::config ("bundling", "pass_through");
7045 # See if --version or --help is used. We want to process these before
7046 # anything else because the GNU Coding Standards require us to
7047 # `exit 0' after processing these options, and we can't guarantee this
7048 # if we treat other options first. (Handling other options first
7049 # could produce error diagnostics, and in this condition it is
7050 # confusing if Automake does `exit 0'.)
7051 my %cli_options_1st_pass =
7052 (
7053 'version' => \&version,
7054 'help' => \&usage,
7055 # Recognize all other options (and their arguments) but do nothing.
7056 map { $_ => sub {} } (keys %cli_options)
7057 );
7058 my @ARGV_backup = @ARGV;
7059 Getopt::Long::GetOptions %cli_options_1st_pass
7060 or exit 1;
7061 @ARGV = @ARGV_backup;
7063 # Now *really* process the options. This time we know
7064 # that --help and --version are not present.
7065 Getopt::Long::GetOptions %cli_options
7066 or exit 1;
7068 if (defined $output_directory)
7069 {
7070 msg 'obsolete', "`--output-dir' is deprecated\n";
7071 }
7072 else
7073 {
7074 # In the next release we'll remove this entirely.
7075 $output_directory = '.';
7076 }
7078 foreach my $arg (@ARGV)
7079 {
7080 if ($arg =~ /^-./)
7081 {
7082 fatal ("unrecognized option `$arg'\n"
7083 . "Try `$0 --help' for more information.");
7084 }
7086 # Handle $local:$input syntax.
7087 my ($local, @rest) = split (/:/, $arg);
7088 @rest = ("$local.in",) unless @rest;
7089 my $input = locate_am @rest;
7090 if ($input)
7091 {
7092 push @input_files, $input;
7093 $output_files{$input} = join (':', ($local, @rest));
7094 }
7095 else
7096 {
7097 error "no Automake input file found in `$arg'";
7098 }
7099 }
7100 }
7102 ################################################################
7104 # Parse the WARNINGS environment variable.
7105 parse_WARNINGS;
7107 # Parse command line.
7108 parse_arguments;
7110 $configure_ac = require_configure_ac;
7112 # Do configure.ac scan only once.
7113 scan_autoconf_files;
7115 fatal "no `Makefile.am' found or specified\n"
7116 if ! @input_files;
7118 my $automake_has_run = 0;
7120 do
7121 {
7122 if ($automake_has_run)
7123 {
7124 verb 'processing Makefiles another time to fix them up.';
7125 prog_error 'running more than two times should never be needed.'
7126 if $automake_has_run >= 2;
7127 }
7128 $automake_needs_to_reprocess_all_files = 0;
7130 # Now do all the work on each file.
7131 foreach my $file (@input_files)
7132 {
7133 ($am_file = $file) =~ s/\.in$//;
7134 if (! -f ($am_file . '.am'))
7135 {
7136 error "`$am_file.am' does not exist";
7137 }
7138 else
7139 {
7140 # Any warning setting now local to this Makefile.am.
7141 dup_channel_setup;
7143 generate_makefile ($am_file . '.am', $file);
7145 # Back out any warning setting.
7146 drop_channel_setup;
7147 }
7148 }
7149 ++$automake_has_run;
7150 }
7151 while ($automake_needs_to_reprocess_all_files);
7153 exit $exit_code;
7156 ### Setup "GNU" style for perl-mode and cperl-mode.
7157 ## Local Variables:
7158 ## perl-indent-level: 2
7159 ## perl-continued-statement-offset: 2
7160 ## perl-continued-brace-offset: 0
7161 ## perl-brace-offset: 0
7162 ## perl-brace-imaginary-offset: 0
7163 ## perl-label-offset: -2
7164 ## cperl-indent-level: 2
7165 ## cperl-brace-offset: 0
7166 ## cperl-continued-brace-offset: 0
7167 ## cperl-label-offset: -2
7168 ## cperl-extra-newline-before-brace: t
7169 ## cperl-merge-trailing-else: nil
7170 ## cperl-continued-statement-offset: 2
7171 ## End: