| blob | 5523d750912b7c8b97c8a961df558bfcd79c20f5 |
1 #!@PERL@ -w
2 # -*- perl -*-
3 # @configure_input@
5 eval 'case $# in 0) exec @PERL@ -S "$0";; *) exec @PERL@ -S "$0" "$@";; esac'
6 if 0;
8 # automake - create Makefile.in from Makefile.am
9 # Copyright (C) 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002,
10 # 2003, 2004, 2005, 2006, 2007, 2008 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 3, 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, see <http://www.gnu.org/licenses/>.
25 # Originally written by David Mackenzie <djm@gnu.ai.mit.edu>.
26 # Perl reimplementation by Tom Tromey <tromey@redhat.com>, and
27 # Alexandre Duret-Lutz <adl@gnu.org>.
29 package Language;
31 BEGIN
32 {
33 my $perllibdir = $ENV{'perllibdir'} || '@datadir@/@PACKAGE@-@APIVERSION@';
34 unshift @INC, (split '@PATH_SEPARATOR@', $perllibdir);
36 # Override SHELL. This is required on DJGPP so that system() uses
37 # bash, not COMMAND.COM which doesn't quote arguments properly.
38 # Other systems aren't expected to use $SHELL when Automake
39 # runs, but it should be safe to drop the `if DJGPP' guard if
40 # it turns up other systems need the same thing. After all,
41 # if SHELL is used, ./configure's SHELL is always better than
42 # the user's SHELL (which may be something like tcsh).
43 $ENV{'SHELL'} = '@SHELL@' if exists $ENV{'DJGPP'};
44 }
46 use Automake::Struct;
47 struct (# Short name of the language (c, f77...).
48 'name' => "\$",
49 # Nice name of the language (C, Fortran 77...).
50 'Name' => "\$",
52 # List of configure variables which must be defined.
53 'config_vars' => '@',
55 'ansi' => "\$",
56 # `pure' is `1' or `'. A `pure' language is one where, if
57 # all the files in a directory are of that language, then we
58 # do not require the C compiler or any code to call it.
59 'pure' => "\$",
61 'autodep' => "\$",
63 # Name of the compiling variable (COMPILE).
64 'compiler' => "\$",
65 # Content of the compiling variable.
66 'compile' => "\$",
67 # Flag to require compilation without linking (-c).
68 'compile_flag' => "\$",
69 'extensions' => '@',
70 # A subroutine to compute a list of possible extensions of
71 # the product given the input extensions.
72 # (defaults to a subroutine which returns ('.$(OBJEXT)', '.lo'))
73 'output_extensions' => "\$",
74 # A list of flag variables used in 'compile'.
75 # (defaults to [])
76 'flags' => "@",
78 # Any tag to pass to libtool while compiling.
79 'libtool_tag' => "\$",
81 # The file to use when generating rules for this language.
82 # The default is 'depend2'.
83 'rule_file' => "\$",
85 # Name of the linking variable (LINK).
86 'linker' => "\$",
87 # Content of the linking variable.
88 'link' => "\$",
90 # Name of the linker variable (LD).
91 'lder' => "\$",
92 # Content of the linker variable ($(CC)).
93 'ld' => "\$",
95 # Flag to specify the output file (-o).
96 'output_flag' => "\$",
97 '_finish' => "\$",
99 # This is a subroutine which is called whenever we finally
100 # determine the context in which a source file will be
101 # compiled.
102 '_target_hook' => "\$",
104 # If TRUE, nodist_ sources will be compiled using specific rules
105 # (i.e. not inference rules). The default is FALSE.
106 'nodist_specific' => "\$");
109 sub finish ($)
110 {
111 my ($self) = @_;
112 if (defined $self->_finish)
113 {
114 &{$self->_finish} ();
115 }
116 }
118 sub target_hook ($$$$%)
119 {
120 my ($self) = @_;
121 if (defined $self->_target_hook)
122 {
123 &{$self->_target_hook} (@_);
124 }
125 }
127 package Automake;
129 use strict;
130 use Automake::Config;
131 BEGIN
132 {
133 if ($perl_threads)
134 {
135 require threads;
136 import threads;
137 require Thread::Queue;
138 import Thread::Queue;
139 }
140 }
141 use Automake::General;
142 use Automake::XFile;
143 use Automake::Channels;
144 use Automake::ChannelDefs;
145 use Automake::Configure_ac;
146 use Automake::FileUtils;
147 use Automake::Location;
148 use Automake::Condition qw/TRUE FALSE/;
149 use Automake::DisjConditions;
150 use Automake::Options;
151 use Automake::Version;
152 use Automake::Variable;
153 use Automake::VarDef;
154 use Automake::Rule;
155 use Automake::RuleDef;
156 use Automake::Wrap 'makefile_wrap';
157 use File::Basename;
158 use File::Spec;
159 use Carp;
161 ## ----------- ##
162 ## Constants. ##
163 ## ----------- ##
165 # Some regular expressions. One reason to put them here is that it
166 # makes indentation work better in Emacs.
168 # Writing singled-quoted-$-terminated regexes is a pain because
169 # perl-mode thinks of $' as the ${'} variable (instead of a $ followed
170 # by a closing quote. Letting perl-mode think the quote is not closed
171 # leads to all sort of misindentations. On the other hand, defining
172 # regexes as double-quoted strings is far less readable. So usually
173 # we will write:
174 #
175 # $REGEX = '^regex_value' . "\$";
177 my $IGNORE_PATTERN = '^\s*##([^#\n].*)?\n';
178 my $WHITE_PATTERN = '^\s*' . "\$";
179 my $COMMENT_PATTERN = '^#';
180 my $TARGET_PATTERN='[$a-zA-Z0-9_.@%][-.a-zA-Z0-9_(){}/$+@%]*';
181 # A rule has three parts: a list of targets, a list of dependencies,
182 # and optionally actions.
183 my $RULE_PATTERN =
184 "^($TARGET_PATTERN(?:(?:\\\\\n|\\s)+$TARGET_PATTERN)*) *:([^=].*|)\$";
186 # Only recognize leading spaces, not leading tabs. If we recognize
187 # leading tabs here then we need to make the reader smarter, because
188 # otherwise it will think rules like `foo=bar; \' are errors.
189 my $ASSIGNMENT_PATTERN = '^ *([^ \t=:+]*)\s*([:+]?)=\s*(.*)' . "\$";
190 # This pattern recognizes a Gnits version id and sets $1 if the
191 # release is an alpha release. We also allow a suffix which can be
192 # used to extend the version number with a "fork" identifier.
193 my $GNITS_VERSION_PATTERN = '\d+\.\d+([a-z]|\.\d+)?(-[A-Za-z0-9]+)?';
195 my $IF_PATTERN = '^if\s+(!?)\s*([A-Za-z][A-Za-z0-9_]*)\s*(?:#.*)?' . "\$";
196 my $ELSE_PATTERN =
197 '^else(?:\s+(!?)\s*([A-Za-z][A-Za-z0-9_]*))?\s*(?:#.*)?' . "\$";
198 my $ENDIF_PATTERN =
199 '^endif(?:\s+(!?)\s*([A-Za-z][A-Za-z0-9_]*))?\s*(?:#.*)?' . "\$";
200 my $PATH_PATTERN = '(\w|[+/.-])+';
201 # This will pass through anything not of the prescribed form.
202 my $INCLUDE_PATTERN = ('^include\s+'
203 . '((\$\(top_srcdir\)/' . $PATH_PATTERN . ')'
204 . '|(\$\(srcdir\)/' . $PATH_PATTERN . ')'
205 . '|([^/\$]' . $PATH_PATTERN . '))\s*(#.*)?' . "\$");
207 # Match `-d' as a command-line argument in a string.
208 my $DASH_D_PATTERN = "(^|\\s)-d(\\s|\$)";
209 # Directories installed during 'install-exec' phase.
210 my $EXEC_DIR_PATTERN =
211 '^(?:bin|sbin|libexec|sysconf|localstate|lib|pkglib|.*exec.*)' . "\$";
213 # Values for AC_CANONICAL_*
214 use constant AC_CANONICAL_BUILD => 1;
215 use constant AC_CANONICAL_HOST => 2;
216 use constant AC_CANONICAL_TARGET => 3;
218 # Values indicating when something should be cleaned.
219 use constant MOSTLY_CLEAN => 0;
220 use constant CLEAN => 1;
221 use constant DIST_CLEAN => 2;
222 use constant MAINTAINER_CLEAN => 3;
224 # Libtool files.
225 my @libtool_files = qw(ltmain.sh config.guess config.sub);
226 # ltconfig appears here for compatibility with old versions of libtool.
227 my @libtool_sometimes = qw(ltconfig ltcf-c.sh ltcf-cxx.sh ltcf-gcj.sh);
229 # Commonly found files we look for and automatically include in
230 # DISTFILES.
231 my @common_files =
232 (qw(ABOUT-GNU ABOUT-NLS AUTHORS BACKLOG COPYING COPYING.DOC COPYING.LIB
233 COPYING.LESSER ChangeLog INSTALL NEWS README THANKS TODO
234 ansi2knr.1 ansi2knr.c compile config.guess config.rpath config.sub
235 depcomp elisp-comp install-sh libversion.in mdate-sh missing
236 mkinstalldirs py-compile texinfo.tex ylwrap),
237 @libtool_files, @libtool_sometimes);
239 # Commonly used files we auto-include, but only sometimes. This list
240 # is used for the --help output only.
241 my @common_sometimes =
242 qw(aclocal.m4 acconfig.h config.h.top config.h.bot configure
243 configure.ac configure.in stamp-vti);
245 # Standard directories from the GNU Coding Standards, and additional
246 # pkg* directories from Automake. Stored in a hash for fast member check.
247 my %standard_prefix =
248 map { $_ => 1 } (qw(bin data dataroot dvi exec html include info
249 lib libexec lisp localstate man man1 man2 man3
250 man4 man5 man6 man7 man8 man9 oldinclude pdf
251 pkgdatadir pkgincludedir pkglibdir pkglibexecdir
252 ps sbin sharedstate sysconf));
254 # Copyright on generated Makefile.ins.
255 my $gen_copyright = "\
256 # Copyright (C) 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002,
257 # 2003, 2004, 2005, 2006, 2007, 2008 Free Software Foundation, Inc.
258 # This Makefile.in is free software; the Free Software Foundation
259 # gives unlimited permission to copy and/or distribute it,
260 # with or without modifications, as long as this notice is preserved.
262 # This program is distributed in the hope that it will be useful,
263 # but WITHOUT ANY WARRANTY, to the extent permitted by law; without
264 # even the implied warranty of MERCHANTABILITY or FITNESS FOR A
265 # PARTICULAR PURPOSE.
266 ";
268 # These constants are returned by the lang_*_rewrite functions.
269 # LANG_SUBDIR means that the resulting object file should be in a
270 # subdir if the source file is. In this case the file name cannot
271 # have `..' components.
272 use constant LANG_IGNORE => 0;
273 use constant LANG_PROCESS => 1;
274 use constant LANG_SUBDIR => 2;
276 # These are used when keeping track of whether an object can be built
277 # by two different paths.
278 use constant COMPILE_LIBTOOL => 1;
279 use constant COMPILE_ORDINARY => 2;
281 # We can't always associate a location to a variable or a rule,
282 # when it's defined by Automake. We use INTERNAL in this case.
283 use constant INTERNAL => new Automake::Location;
285 # Serialization keys for message queues.
286 use constant {
287 QUEUE_MESSAGE => "msg",
288 QUEUE_CONF_FILE => "conf file",
289 QUEUE_LOCATION => "location",
290 QUEUE_STRING => "string"
291 };
292 \f
294 ## ---------------------------------- ##
295 ## Variables related to the options. ##
296 ## ---------------------------------- ##
298 # TRUE if we should always generate Makefile.in.
299 my $force_generation = 1;
301 # From the Perl manual.
302 my $symlink_exists = (eval 'symlink ("", "");', $@ eq '');
304 # TRUE if missing standard files should be installed.
305 my $add_missing = 0;
307 # TRUE if we should copy missing files; otherwise symlink if possible.
308 my $copy_missing = 0;
310 # TRUE if we should always update files that we know about.
311 my $force_missing = 0;
314 ## ---------------------------------------- ##
315 ## Variables filled during files scanning. ##
316 ## ---------------------------------------- ##
318 # Name of the configure.ac file.
319 my $configure_ac;
321 # Files found by scanning configure.ac for LIBOBJS.
322 my %libsources = ();
324 # Names used in AC_CONFIG_HEADER call.
325 my @config_headers = ();
327 # Names used in AC_CONFIG_LINKS call.
328 my @config_links = ();
330 # Directory where output files go. Actually, output files are
331 # relative to this directory.
332 my $output_directory;
334 # List of Makefile.am's to process, and their corresponding outputs.
335 my @input_files = ();
336 my %output_files = ();
338 # Complete list of Makefile.am's that exist.
339 my @configure_input_files = ();
341 # List of files in AC_CONFIG_FILES/AC_OUTPUT without Makefile.am's,
342 # and their outputs.
343 my @other_input_files = ();
344 # Where each AC_CONFIG_FILES/AC_OUTPUT/AC_CONFIG_LINK/AC_CONFIG_HEADER appears.
345 # The keys are the files created by these macros.
346 my %ac_config_files_location = ();
347 # The condition under which AC_CONFIG_FOOS appears.
348 my %ac_config_files_condition = ();
350 # Directory to search for configure-required files. This
351 # will be computed by &locate_aux_dir and can be set using
352 # AC_CONFIG_AUX_DIR in configure.ac.
353 # $CONFIG_AUX_DIR is the `raw' directory, valid only in the source-tree.
354 my $config_aux_dir = '';
355 my $config_aux_dir_set_in_configure_ac = 0;
356 # $AM_CONFIG_AUX_DIR is prefixed with $(top_srcdir), so it can be used
357 # in Makefiles.
358 my $am_config_aux_dir = '';
360 # Directory to search for AC_LIBSOURCE files, as set by AC_CONFIG_LIBOBJ_DIR
361 # in configure.ac.
362 my $config_libobj_dir = '';
364 # Whether AM_GNU_GETTEXT has been seen in configure.ac.
365 my $seen_gettext = 0;
366 # Whether AM_GNU_GETTEXT([external]) is used.
367 my $seen_gettext_external = 0;
368 # Where AM_GNU_GETTEXT appears.
369 my $ac_gettext_location;
370 # Whether AM_GNU_GETTEXT_INTL_SUBDIR has been seen.
371 my $seen_gettext_intl = 0;
373 # Lists of tags supported by Libtool.
374 my %libtool_tags = ();
375 # 1 if Libtool uses LT_SUPPORTED_TAG. If it does, then it also
376 # uses AC_REQUIRE_AUX_FILE.
377 my $libtool_new_api = 0;
379 # Most important AC_CANONICAL_* macro seen so far.
380 my $seen_canonical = 0;
381 # Location of that macro.
382 my $canonical_location;
384 # Where AM_MAINTAINER_MODE appears.
385 my $seen_maint_mode;
387 # Actual version we've seen.
388 my $package_version = '';
390 # Where version is defined.
391 my $package_version_location;
393 # TRUE if we've seen AM_ENABLE_MULTILIB.
394 my $seen_multilib = 0;
396 # TRUE if we've seen AM_PROG_CC_C_O
397 my $seen_cc_c_o = 0;
399 # Location of AC_REQUIRE_AUX_FILE calls, indexed by their argument.
400 my %required_aux_file = ();
402 # Where AM_INIT_AUTOMAKE is called;
403 my $seen_init_automake = 0;
405 # TRUE if we've seen AM_AUTOMAKE_VERSION.
406 my $seen_automake_version = 0;
408 # Hash table of discovered configure substitutions. Keys are names,
409 # values are `FILE:LINE' strings which are used by error message
410 # generation.
411 my %configure_vars = ();
413 # Ignored configure substitutions (i.e., variables not to be output in
414 # Makefile.in)
415 my %ignored_configure_vars = ();
417 # Files included by $configure_ac.
418 my @configure_deps = ();
420 # Greatest timestamp of configure's dependencies.
421 my $configure_deps_greatest_timestamp = 0;
423 # Hash table of AM_CONDITIONAL variables seen in configure.
424 my %configure_cond = ();
426 # This maps extensions onto language names.
427 my %extension_map = ();
429 # List of the DIST_COMMON files we discovered while reading
430 # configure.in
431 my $configure_dist_common = '';
433 # This maps languages names onto objects.
434 my %languages = ();
435 # Maps each linker variable onto a language object.
436 my %link_languages = ();
438 # maps extensions to needed source flags.
439 my %sourceflags = ();
441 # List of targets we must always output.
442 # FIXME: Complete, and remove falsely required targets.
443 my %required_targets =
444 (
445 'all' => 1,
446 'dvi' => 1,
447 'pdf' => 1,
448 'ps' => 1,
449 'info' => 1,
450 'install-info' => 1,
451 'install' => 1,
452 'install-data' => 1,
453 'install-exec' => 1,
454 'uninstall' => 1,
456 # FIXME: Not required, temporary hacks.
457 # Well, actually they are sort of required: the -recursive
458 # targets will run them anyway...
459 'dvi-am' => 1,
460 'pdf-am' => 1,
461 'ps-am' => 1,
462 'info-am' => 1,
463 'install-data-am' => 1,
464 'install-exec-am' => 1,
465 'installcheck-am' => 1,
466 'uninstall-am' => 1,
468 'install-man' => 1,
469 );
471 # Set to 1 if this run will create the Makefile.in that distributes
472 # the files in config_aux_dir.
473 my $automake_will_process_aux_dir = 0;
475 # The name of the Makefile currently being processed.
476 my $am_file = 'BUG';
477 \f
479 ################################################################
481 ## ------------------------------------------ ##
482 ## Variables reset by &initialize_per_input. ##
483 ## ------------------------------------------ ##
485 # Basename and relative dir of the input file.
486 my $am_file_name;
487 my $am_relative_dir;
489 # Same but wrt Makefile.in.
490 my $in_file_name;
491 my $relative_dir;
493 # Relative path to the top directory.
494 my $topsrcdir;
496 # Greatest timestamp of the output's dependencies (excluding
497 # configure's dependencies).
498 my $output_deps_greatest_timestamp;
500 # These variables are used when generating each Makefile.in.
501 # They hold the Makefile.in until it is ready to be printed.
502 my $output_vars;
503 my $output_all;
504 my $output_header;
505 my $output_rules;
506 my $output_trailer;
508 # This is the conditional stack, updated on if/else/endif, and
509 # used to build Condition objects.
510 my @cond_stack;
512 # This holds the set of included files.
513 my @include_stack;
515 # List of dependencies for the obvious targets.
516 my @all;
517 my @check;
518 my @check_tests;
520 # Keys in this hash table are files to delete. The associated
521 # value tells when this should happen (MOSTLY_CLEAN, DIST_CLEAN, etc.)
522 my %clean_files;
524 # Keys in this hash table are object files or other files in
525 # subdirectories which need to be removed. This only holds files
526 # which are created by compilations. The value in the hash indicates
527 # when the file should be removed.
528 my %compile_clean_files;
530 # Keys in this hash table are directories where we expect to build a
531 # libtool object. We use this information to decide what directories
532 # to delete.
533 my %libtool_clean_directories;
535 # Value of `$(SOURCES)', used by tags.am.
536 my @sources;
537 # Sources which go in the distribution.
538 my @dist_sources;
540 # This hash maps object file names onto their corresponding source
541 # file names. This is used to ensure that each object is created
542 # by a single source file.
543 my %object_map;
545 # This hash maps object file names onto an integer value representing
546 # whether this object has been built via ordinary compilation or
547 # libtool compilation (the COMPILE_* constants).
548 my %object_compilation_map;
551 # This keeps track of the directories for which we've already
552 # created dirstamp code. Keys are directories, values are stamp files.
553 # Several keys can share the same stamp files if they are equivalent
554 # (as are `.//foo' and `foo').
555 my %directory_map;
557 # All .P files.
558 my %dep_files;
560 # This is a list of all targets to run during "make dist".
561 my @dist_targets;
563 # Keep track of all programs declared in this Makefile, without
564 # $(EXEEXT). @substitutions@ are not listed.
565 my %known_programs;
567 # Keys in this hash are the basenames of files which must depend on
568 # ansi2knr. Values are either the empty string, or the directory in
569 # which the ANSI source file appears; the directory must have a
570 # trailing `/'.
571 my %de_ansi_files;
573 # This keeps track of which extensions we've seen (that we care
574 # about).
575 my %extension_seen;
577 # This is random scratch space for the language finish functions.
578 # Don't randomly overwrite it; examine other uses of keys first.
579 my %language_scratch;
581 # We keep track of which objects need special (per-executable)
582 # handling on a per-language basis.
583 my %lang_specific_files;
585 # This is set when `handle_dist' has finished. Once this happens,
586 # we should no longer push on dist_common.
587 my $handle_dist_run;
589 # Used to store a set of linkers needed to generate the sources currently
590 # under consideration.
591 my %linkers_used;
593 # True if we need `LINK' defined. This is a hack.
594 my $need_link;
596 # Was get_object_extension run?
597 # FIXME: This is a hack. a better switch should be found.
598 my $get_object_extension_was_run;
600 # Record each file processed by make_paragraphs.
601 my %transformed_files;
602 \f
604 ################################################################
606 ## ---------------------------------------------- ##
607 ## Variables not reset by &initialize_per_input. ##
608 ## ---------------------------------------------- ##
610 # Cache each file processed by make_paragraphs.
611 # (This is different from %transformed_files because
612 # %transformed_files is reset for each file while %am_file_cache
613 # it global to the run.)
614 my %am_file_cache;
616 ################################################################
618 # var_SUFFIXES_trigger ($TYPE, $VALUE)
619 # ------------------------------------
620 # This is called by Automake::Variable::define() when SUFFIXES
621 # is defined ($TYPE eq '') or appended ($TYPE eq '+').
622 # The work here needs to be performed as a side-effect of the
623 # macro_define() call because SUFFIXES definitions impact
624 # on $KNOWN_EXTENSIONS_PATTERN which is used used when parsing
625 # the input am file.
626 sub var_SUFFIXES_trigger ($$)
627 {
628 my ($type, $value) = @_;
629 accept_extensions (split (' ', $value));
630 }
631 Automake::Variable::hook ('SUFFIXES', \&var_SUFFIXES_trigger);
633 ################################################################
635 ## --------------------------------- ##
636 ## Forward subroutine declarations. ##
637 ## --------------------------------- ##
638 sub register_language (%);
639 sub file_contents_internal ($$$%);
640 sub define_files_variable ($\@$$);
643 # &initialize_per_input ()
644 # ------------------------
645 # (Re)-Initialize per-Makefile.am variables.
646 sub initialize_per_input ()
647 {
648 reset_local_duplicates ();
650 $am_file_name = undef;
651 $am_relative_dir = undef;
653 $in_file_name = undef;
654 $relative_dir = undef;
655 $topsrcdir = undef;
657 $output_deps_greatest_timestamp = 0;
659 $output_vars = '';
660 $output_all = '';
661 $output_header = '';
662 $output_rules = '';
663 $output_trailer = '';
665 Automake::Options::reset;
666 Automake::Variable::reset;
667 Automake::Rule::reset;
669 @cond_stack = ();
671 @include_stack = ();
673 @all = ();
674 @check = ();
675 @check_tests = ();
677 %clean_files = ();
678 %compile_clean_files = ();
680 # We always include `.'. This isn't strictly correct.
681 %libtool_clean_directories = ('.' => 1);
683 @sources = ();
684 @dist_sources = ();
686 %object_map = ();
687 %object_compilation_map = ();
689 %directory_map = ();
691 %dep_files = ();
693 @dist_targets = ();
695 %known_programs = ();
697 %de_ansi_files = ();
699 %extension_seen = ();
701 %language_scratch = ();
703 %lang_specific_files = ();
705 $handle_dist_run = 0;
707 $need_link = 0;
709 $get_object_extension_was_run = 0;
711 %transformed_files = ();
712 }
715 ################################################################
717 # Initialize our list of languages that are internally supported.
719 # C.
720 register_language ('name' => 'c',
721 'Name' => 'C',
722 'config_vars' => ['CC'],
723 'ansi' => 1,
724 'autodep' => '',
725 'flags' => ['CFLAGS', 'CPPFLAGS'],
726 'compiler' => 'COMPILE',
727 'compile' => '$(CC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS) $(CPPFLAGS) $(AM_CFLAGS) $(CFLAGS)',
728 'lder' => 'CCLD',
729 'ld' => '$(CC)',
730 'linker' => 'LINK',
731 'link' => '$(CCLD) $(AM_CFLAGS) $(CFLAGS) $(AM_LDFLAGS) $(LDFLAGS) -o $@',
732 'compile_flag' => '-c',
733 'libtool_tag' => 'CC',
734 'extensions' => ['.c'],
735 '_finish' => \&lang_c_finish);
737 # C++.
738 register_language ('name' => 'cxx',
739 'Name' => 'C++',
740 'config_vars' => ['CXX'],
741 'linker' => 'CXXLINK',
742 'link' => '$(CXXLD) $(AM_CXXFLAGS) $(CXXFLAGS) $(AM_LDFLAGS) $(LDFLAGS) -o $@',
743 'autodep' => 'CXX',
744 'flags' => ['CXXFLAGS', 'CPPFLAGS'],
745 'compile' => '$(CXX) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS) $(CPPFLAGS) $(AM_CXXFLAGS) $(CXXFLAGS)',
746 'compiler' => 'CXXCOMPILE',
747 'compile_flag' => '-c',
748 'output_flag' => '-o',
749 'libtool_tag' => 'CXX',
750 'lder' => 'CXXLD',
751 'ld' => '$(CXX)',
752 'pure' => 1,
753 'extensions' => ['.c++', '.cc', '.cpp', '.cxx', '.C']);
755 # Objective C.
756 register_language ('name' => 'objc',
757 'Name' => 'Objective C',
758 'config_vars' => ['OBJC'],
759 'linker' => 'OBJCLINK',
760 'link' => '$(OBJCLD) $(AM_OBJCFLAGS) $(OBJCFLAGS) $(AM_LDFLAGS) $(LDFLAGS) -o $@',
761 'autodep' => 'OBJC',
762 'flags' => ['OBJCFLAGS', 'CPPFLAGS'],
763 'compile' => '$(OBJC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS) $(CPPFLAGS) $(AM_OBJCFLAGS) $(OBJCFLAGS)',
764 'compiler' => 'OBJCCOMPILE',
765 'compile_flag' => '-c',
766 'output_flag' => '-o',
767 'lder' => 'OBJCLD',
768 'ld' => '$(OBJC)',
769 'pure' => 1,
770 'extensions' => ['.m']);
772 # Unified Parallel C.
773 register_language ('name' => 'upc',
774 'Name' => 'Unified Parallel C',
775 'config_vars' => ['UPC'],
776 'linker' => 'UPCLINK',
777 'link' => '$(UPCLD) $(AM_UPCFLAGS) $(UPCFLAGS) $(AM_LDFLAGS) $(LDFLAGS) -o $@',
778 'autodep' => 'UPC',
779 'flags' => ['UPCFLAGS', 'CPPFLAGS'],
780 'compile' => '$(UPC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS) $(CPPFLAGS) $(AM_UPCFLAGS) $(UPCFLAGS)',
781 'compiler' => 'UPCCOMPILE',
782 'compile_flag' => '-c',
783 'output_flag' => '-o',
784 'lder' => 'UPCLD',
785 'ld' => '$(UPC)',
786 'pure' => 1,
787 'extensions' => ['.upc']);
789 # Headers.
790 register_language ('name' => 'header',
791 'Name' => 'Header',
792 'extensions' => ['.h', '.H', '.hxx', '.h++', '.hh',
793 '.hpp', '.inc'],
794 # No output.
795 'output_extensions' => sub { return () },
796 # Nothing to do.
797 '_finish' => sub { });
799 # Yacc (C & C++).
800 register_language ('name' => 'yacc',
801 'Name' => 'Yacc',
802 'config_vars' => ['YACC'],
803 'flags' => ['YFLAGS'],
804 'compile' => '$(YACC) $(YFLAGS) $(AM_YFLAGS)',
805 'compiler' => 'YACCCOMPILE',
806 'extensions' => ['.y'],
807 'output_extensions' => sub { (my $ext = $_[0]) =~ tr/y/c/;
808 return ($ext,) },
809 'rule_file' => 'yacc',
810 '_finish' => \&lang_yacc_finish,
811 '_target_hook' => \&lang_yacc_target_hook,
812 'nodist_specific' => 1);
813 register_language ('name' => 'yaccxx',
814 'Name' => 'Yacc (C++)',
815 'config_vars' => ['YACC'],
816 'rule_file' => 'yacc',
817 'flags' => ['YFLAGS'],
818 'compiler' => 'YACCCOMPILE',
819 'compile' => '$(YACC) $(YFLAGS) $(AM_YFLAGS)',
820 'extensions' => ['.y++', '.yy', '.yxx', '.ypp'],
821 'output_extensions' => sub { (my $ext = $_[0]) =~ tr/y/c/;
822 return ($ext,) },
823 '_finish' => \&lang_yacc_finish,
824 '_target_hook' => \&lang_yacc_target_hook,
825 'nodist_specific' => 1);
827 # Lex (C & C++).
828 register_language ('name' => 'lex',
829 'Name' => 'Lex',
830 'config_vars' => ['LEX'],
831 'rule_file' => 'lex',
832 'flags' => ['LFLAGS'],
833 'compile' => '$(LEX) $(LFLAGS) $(AM_LFLAGS)',
834 'compiler' => 'LEXCOMPILE',
835 'extensions' => ['.l'],
836 'output_extensions' => sub { (my $ext = $_[0]) =~ tr/l/c/;
837 return ($ext,) },
838 '_finish' => \&lang_lex_finish,
839 '_target_hook' => \&lang_lex_target_hook,
840 'nodist_specific' => 1);
841 register_language ('name' => 'lexxx',
842 'Name' => 'Lex (C++)',
843 'config_vars' => ['LEX'],
844 'rule_file' => 'lex',
845 'flags' => ['LFLAGS'],
846 'compile' => '$(LEX) $(LFLAGS) $(AM_LFLAGS)',
847 'compiler' => 'LEXCOMPILE',
848 'extensions' => ['.l++', '.ll', '.lxx', '.lpp'],
849 'output_extensions' => sub { (my $ext = $_[0]) =~ tr/l/c/;
850 return ($ext,) },
851 '_finish' => \&lang_lex_finish,
852 '_target_hook' => \&lang_lex_target_hook,
853 'nodist_specific' => 1);
855 # Assembler.
856 register_language ('name' => 'asm',
857 'Name' => 'Assembler',
858 'config_vars' => ['CCAS', 'CCASFLAGS'],
860 'flags' => ['CCASFLAGS'],
861 # Users can set AM_CCASFLAGS to include DEFS, INCLUDES,
862 # or anything else required. They can also set CCAS.
863 # Or simply use Preprocessed Assembler.
864 'compile' => '$(CCAS) $(AM_CCASFLAGS) $(CCASFLAGS)',
865 'compiler' => 'CCASCOMPILE',
866 'compile_flag' => '-c',
867 'output_flag' => '-o',
868 'extensions' => ['.s'],
870 # With assembly we still use the C linker.
871 '_finish' => \&lang_c_finish);
873 # Preprocessed Assembler.
874 register_language ('name' => 'cppasm',
875 'Name' => 'Preprocessed Assembler',
876 'config_vars' => ['CCAS', 'CCASFLAGS'],
878 'autodep' => 'CCAS',
879 'flags' => ['CCASFLAGS', 'CPPFLAGS'],
880 'compile' => '$(CCAS) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS) $(CPPFLAGS) $(AM_CCASFLAGS) $(CCASFLAGS)',
881 'compiler' => 'CPPASCOMPILE',
882 'compile_flag' => '-c',
883 'output_flag' => '-o',
884 'extensions' => ['.S', '.sx'],
886 # With assembly we still use the C linker.
887 '_finish' => \&lang_c_finish);
889 # Fortran 77
890 register_language ('name' => 'f77',
891 'Name' => 'Fortran 77',
892 'config_vars' => ['F77'],
893 'linker' => 'F77LINK',
894 'link' => '$(F77LD) $(AM_FFLAGS) $(FFLAGS) $(AM_LDFLAGS) $(LDFLAGS) -o $@',
895 'flags' => ['FFLAGS'],
896 'compile' => '$(F77) $(AM_FFLAGS) $(FFLAGS)',
897 'compiler' => 'F77COMPILE',
898 'compile_flag' => '-c',
899 'output_flag' => '-o',
900 'libtool_tag' => 'F77',
901 'lder' => 'F77LD',
902 'ld' => '$(F77)',
903 'pure' => 1,
904 'extensions' => ['.f', '.for']);
906 # Fortran
907 register_language ('name' => 'fc',
908 'Name' => 'Fortran',
909 'config_vars' => ['FC'],
910 'linker' => 'FCLINK',
911 'link' => '$(FCLD) $(AM_FCFLAGS) $(FCFLAGS) $(AM_LDFLAGS) $(LDFLAGS) -o $@',
912 'flags' => ['FCFLAGS'],
913 'compile' => '$(FC) $(AM_FCFLAGS) $(FCFLAGS)',
914 'compiler' => 'FCCOMPILE',
915 'compile_flag' => '-c',
916 'output_flag' => '-o',
917 'lder' => 'FCLD',
918 'ld' => '$(FC)',
919 'pure' => 1,
920 'extensions' => ['.f90', '.f95', '.f03', '.f08']);
922 # Preprocessed Fortran
923 register_language ('name' => 'ppfc',
924 'Name' => 'Preprocessed Fortran',
925 'config_vars' => ['FC'],
926 'linker' => 'FCLINK',
927 'link' => '$(FCLD) $(AM_FCFLAGS) $(FCFLAGS) $(AM_LDFLAGS) $(LDFLAGS) -o $@',
928 'lder' => 'FCLD',
929 'ld' => '$(FC)',
930 'flags' => ['FCFLAGS', 'CPPFLAGS'],
931 'compiler' => 'PPFCCOMPILE',
932 'compile' => '$(FC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS) $(CPPFLAGS) $(AM_FCFLAGS) $(FCFLAGS)',
933 'compile_flag' => '-c',
934 'output_flag' => '-o',
935 'libtool_tag' => 'FC',
936 'pure' => 1,
937 'extensions' => ['.F90','.F95', '.F03', '.F08']);
939 # Preprocessed Fortran 77
940 #
941 # The current support for preprocessing Fortran 77 just involves
942 # passing `$(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS)
943 # $(CPPFLAGS)' as additional flags to the Fortran 77 compiler, since
944 # this is how GNU Make does it; see the `GNU Make Manual, Edition 0.51
945 # for `make' Version 3.76 Beta' (specifically, from info file
946 # `(make)Catalogue of Rules').
947 #
948 # A better approach would be to write an Autoconf test
949 # (i.e. AC_PROG_FPP) for a Fortran 77 preprocessor, because not all
950 # Fortran 77 compilers know how to do preprocessing. The Autoconf
951 # macro AC_PROG_FPP should test the Fortran 77 compiler first for
952 # preprocessing capabilities, and then fall back on cpp (if cpp were
953 # available).
954 register_language ('name' => 'ppf77',
955 'Name' => 'Preprocessed Fortran 77',
956 'config_vars' => ['F77'],
957 'linker' => 'F77LINK',
958 'link' => '$(F77LD) $(AM_FFLAGS) $(FFLAGS) $(AM_LDFLAGS) $(LDFLAGS) -o $@',
959 'lder' => 'F77LD',
960 'ld' => '$(F77)',
961 'flags' => ['FFLAGS', 'CPPFLAGS'],
962 'compiler' => 'PPF77COMPILE',
963 'compile' => '$(F77) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS) $(CPPFLAGS) $(AM_FFLAGS) $(FFLAGS)',
964 'compile_flag' => '-c',
965 'output_flag' => '-o',
966 'libtool_tag' => 'F77',
967 'pure' => 1,
968 'extensions' => ['.F']);
970 # Ratfor.
971 register_language ('name' => 'ratfor',
972 'Name' => 'Ratfor',
973 'config_vars' => ['F77'],
974 'linker' => 'F77LINK',
975 'link' => '$(F77LD) $(AM_FFLAGS) $(FFLAGS) $(AM_LDFLAGS) $(LDFLAGS) -o $@',
976 'lder' => 'F77LD',
977 'ld' => '$(F77)',
978 'flags' => ['RFLAGS', 'FFLAGS'],
979 # FIXME also FFLAGS.
980 'compile' => '$(F77) $(AM_FFLAGS) $(FFLAGS) $(AM_RFLAGS) $(RFLAGS)',
981 'compiler' => 'RCOMPILE',
982 'compile_flag' => '-c',
983 'output_flag' => '-o',
984 'libtool_tag' => 'F77',
985 'pure' => 1,
986 'extensions' => ['.r']);
988 # Java via gcj.
989 register_language ('name' => 'java',
990 'Name' => 'Java',
991 'config_vars' => ['GCJ'],
992 'linker' => 'GCJLINK',
993 'link' => '$(GCJLD) $(AM_GCJFLAGS) $(GCJFLAGS) $(AM_LDFLAGS) $(LDFLAGS) -o $@',
994 'autodep' => 'GCJ',
995 'flags' => ['GCJFLAGS'],
996 'compile' => '$(GCJ) $(AM_GCJFLAGS) $(GCJFLAGS)',
997 'compiler' => 'GCJCOMPILE',
998 'compile_flag' => '-c',
999 'output_flag' => '-o',
1000 'libtool_tag' => 'GCJ',
1001 'lder' => 'GCJLD',
1002 'ld' => '$(GCJ)',
1003 'pure' => 1,
1004 'extensions' => ['.java', '.class', '.zip', '.jar']);
1006 ################################################################
1008 # Error reporting functions.
1010 # err_am ($MESSAGE, [%OPTIONS])
1011 # -----------------------------
1012 # Uncategorized errors about the current Makefile.am.
1013 sub err_am ($;%)
1014 {
1015 msg_am ('error', @_);
1016 }
1018 # err_ac ($MESSAGE, [%OPTIONS])
1019 # -----------------------------
1020 # Uncategorized errors about configure.ac.
1021 sub err_ac ($;%)
1022 {
1023 msg_ac ('error', @_);
1024 }
1026 # msg_am ($CHANNEL, $MESSAGE, [%OPTIONS])
1027 # ---------------------------------------
1028 # Messages about about the current Makefile.am.
1029 sub msg_am ($$;%)
1030 {
1031 my ($channel, $msg, %opts) = @_;
1032 msg $channel, "${am_file}.am", $msg, %opts;
1033 }
1035 # msg_ac ($CHANNEL, $MESSAGE, [%OPTIONS])
1036 # ---------------------------------------
1037 # Messages about about configure.ac.
1038 sub msg_ac ($$;%)
1039 {
1040 my ($channel, $msg, %opts) = @_;
1041 msg $channel, $configure_ac, $msg, %opts;
1042 }
1044 ################################################################
1046 # subst ($TEXT)
1047 # -------------
1048 # Return a configure-style substitution using the indicated text.
1049 # We do this to avoid having the substitutions directly in automake.in;
1050 # when we do that they are sometimes removed and this causes confusion
1051 # and bugs.
1052 sub subst ($)
1053 {
1054 my ($text) = @_;
1055 return '@' . $text . '@';
1056 }
1058 ################################################################
1061 # $BACKPATH
1062 # &backname ($REL-DIR)
1063 # --------------------
1064 # If I `cd $REL-DIR', then to come back, I should `cd $BACKPATH'.
1065 # For instance `src/foo' => `../..'.
1066 # Works with non strictly increasing paths, i.e., `src/../lib' => `..'.
1067 sub backname ($)
1068 {
1069 my ($file) = @_;
1070 my @res;
1071 foreach (split (/\//, $file))
1072 {
1073 next if $_ eq '.' || $_ eq '';
1074 if ($_ eq '..')
1075 {
1076 pop @res
1077 or prog_error ("trying to reverse path `$file' pointing outside tree");
1078 }
1079 else
1080 {
1081 push (@res, '..');
1082 }
1083 }
1084 return join ('/', @res) || '.';
1085 }
1087 ################################################################
1090 # Handle AUTOMAKE_OPTIONS variable. Return 1 on error, 0 otherwise.
1091 sub handle_options
1092 {
1093 my $var = var ('AUTOMAKE_OPTIONS');
1094 if ($var)
1095 {
1096 if ($var->has_conditional_contents)
1097 {
1098 msg_var ('unsupported', $var,
1099 "`AUTOMAKE_OPTIONS' cannot have conditional contents");
1100 }
1101 foreach my $locvals ($var->value_as_list_recursive (cond_filter => TRUE,
1102 location => 1))
1103 {
1104 my ($loc, $value) = @$locvals;
1105 return 1 if (process_option_list ($loc, $value))
1106 }
1107 }
1109 if ($strictness == GNITS)
1110 {
1111 set_option ('readme-alpha', INTERNAL);
1112 set_option ('std-options', INTERNAL);
1113 set_option ('check-news', INTERNAL);
1114 }
1116 return 0;
1117 }
1119 # shadow_unconditionally ($varname, $where)
1120 # -----------------------------------------
1121 # Return a $(variable) that contains all possible values
1122 # $varname can take.
1123 # If the VAR wasn't defined conditionally, return $(VAR).
1124 # Otherwise we create a am__VAR_DIST variable which contains
1125 # all possible values, and return $(am__VAR_DIST).
1126 sub shadow_unconditionally ($$)
1127 {
1128 my ($varname, $where) = @_;
1129 my $var = var $varname;
1130 if ($var->has_conditional_contents)
1131 {
1132 $varname = "am__${varname}_DIST";
1133 my @files = uniq ($var->value_as_list_recursive);
1134 define_pretty_variable ($varname, TRUE, $where, @files);
1135 }
1136 return "\$($varname)"
1137 }
1139 # get_object_extension ($EXTENSION)
1140 # ---------------------------------
1141 # Prefix $EXTENSION with $U if ansi2knr is in use.
1142 sub get_object_extension ($)
1143 {
1144 my ($extension) = @_;
1146 # Check for automatic de-ANSI-fication.
1147 $extension = '$U' . $extension
1148 if option 'ansi2knr';
1150 $get_object_extension_was_run = 1;
1152 return $extension;
1153 }
1155 # check_user_variables (@LIST)
1156 # ----------------------------
1157 # Make sure each variable VAR in @LIST does not exist, suggest using AM_VAR
1158 # otherwise.
1159 sub check_user_variables (@)
1160 {
1161 my @dont_override = @_;
1162 foreach my $flag (@dont_override)
1163 {
1164 my $var = var $flag;
1165 if ($var)
1166 {
1167 for my $cond ($var->conditions->conds)
1168 {
1169 if ($var->rdef ($cond)->owner == VAR_MAKEFILE)
1170 {
1171 msg_cond_var ('gnu', $cond, $flag,
1172 "`$flag' is a user variable, "
1173 . "you should not override it;\n"
1174 . "use `AM_$flag' instead.");
1175 }
1176 }
1177 }
1178 }
1179 }
1181 # Call finish function for each language that was used.
1182 sub handle_languages
1183 {
1184 if (! option 'no-dependencies')
1185 {
1186 # Include auto-dep code. Don't include it if DEP_FILES would
1187 # be empty.
1188 if (&saw_sources_p (0) && keys %dep_files)
1189 {
1190 # Set location of depcomp.
1191 &define_variable ('depcomp',
1192 "\$(SHELL) $am_config_aux_dir/depcomp",
1193 INTERNAL);
1194 &define_variable ('am__depfiles_maybe', 'depfiles', INTERNAL);
1196 require_conf_file ("$am_file.am", FOREIGN, 'depcomp');
1198 my @deplist = sort keys %dep_files;
1199 # Generate each `include' individually. Irix 6 make will
1200 # not properly include several files resulting from a
1201 # variable expansion; generating many separate includes
1202 # seems safest.
1203 $output_rules .= "\n";
1204 foreach my $iter (@deplist)
1205 {
1206 $output_rules .= (subst ('AMDEP_TRUE')
1207 . subst ('am__include')
1208 . ' '
1209 . subst ('am__quote')
1210 . $iter
1211 . subst ('am__quote')
1212 . "\n");
1213 }
1215 # Compute the set of directories to remove in distclean-depend.
1216 my @depdirs = uniq (map { dirname ($_) } @deplist);
1217 $output_rules .= &file_contents ('depend',
1218 new Automake::Location,
1219 DEPDIRS => "@depdirs");
1220 }
1221 }
1222 else
1223 {
1224 &define_variable ('depcomp', '', INTERNAL);
1225 &define_variable ('am__depfiles_maybe', '', INTERNAL);
1226 }
1228 my %done;
1230 # Is the c linker needed?
1231 my $needs_c = 0;
1232 foreach my $ext (sort keys %extension_seen)
1233 {
1234 next unless $extension_map{$ext};
1236 my $lang = $languages{$extension_map{$ext}};
1238 my $rule_file = $lang->rule_file || 'depend2';
1240 # Get information on $LANG.
1241 my $pfx = $lang->autodep;
1242 my $fpfx = ($pfx eq '') ? 'CC' : $pfx;
1244 my ($AMDEP, $FASTDEP) =
1245 (option 'no-dependencies' || $lang->autodep eq 'no')
1246 ? ('FALSE', 'FALSE') : ('AMDEP', "am__fastdep$fpfx");
1248 my %transform = ('EXT' => $ext,
1249 'PFX' => $pfx,
1250 'FPFX' => $fpfx,
1251 'AMDEP' => $AMDEP,
1252 'FASTDEP' => $FASTDEP,
1253 '-c' => $lang->compile_flag || '',
1254 # These are not used, but they need to be defined
1255 # so &transform do not complain.
1256 SUBDIROBJ => 0,
1257 'DERIVED-EXT' => 'BUG',
1258 DIST_SOURCE => 1,
1259 );
1261 # Generate the appropriate rules for this extension.
1262 if (((! option 'no-dependencies') && $lang->autodep ne 'no')
1263 || defined $lang->compile)
1264 {
1265 # Some C compilers don't support -c -o. Use it only if really
1266 # needed.
1267 my $output_flag = $lang->output_flag || '';
1268 $output_flag = '-o'
1269 if (! $output_flag
1270 && $lang->name eq 'c'
1271 && option 'subdir-objects');
1273 # Compute a possible derived extension.
1274 # This is not used by depend2.am.
1275 my $der_ext = (&{$lang->output_extensions} ($ext))[0];
1277 # When we output an inference rule like `.c.o:' we
1278 # have two cases to consider: either subdir-objects
1279 # is used, or it is not.
1280 #
1281 # In the latter case the rule is used to build objects
1282 # in the current directory, and dependencies always
1283 # go into `./$(DEPDIR)/'. We can hard-code this value.
1284 #
1285 # In the former case the rule can be used to build
1286 # objects in sub-directories too. Dependencies should
1287 # go into the appropriate sub-directories, e.g.,
1288 # `sub/$(DEPDIR)/'. The value of this directory
1289 # needs to be computed on-the-fly.
1290 #
1291 # DEPBASE holds the name of this directory, plus the
1292 # basename part of the object file (extensions Po, TPo,
1293 # Plo, TPlo will be added later as appropriate). It is
1294 # either hardcoded, or a shell variable (`$depbase') that
1295 # will be computed by the rule.
1296 my $depbase =
1297 option ('subdir-objects') ? '$$depbase' : '$(DEPDIR)/$*';
1298 $output_rules .=
1299 file_contents ($rule_file,
1300 new Automake::Location,
1301 %transform,
1302 GENERIC => 1,
1304 'DERIVED-EXT' => $der_ext,
1306 DEPBASE => $depbase,
1307 BASE => '$*',
1308 SOURCE => '$<',
1309 SOURCEFLAG => $sourceflags{$ext} || '',
1310 OBJ => '$@',
1311 OBJOBJ => '$@',
1312 LTOBJ => '$@',
1314 COMPILE => '$(' . $lang->compiler . ')',
1315 LTCOMPILE => '$(LT' . $lang->compiler . ')',
1316 -o => $output_flag,
1317 SUBDIROBJ => !! option 'subdir-objects');
1318 }
1320 # Now include code for each specially handled object with this
1321 # language.
1322 my %seen_files = ();
1323 foreach my $file (@{$lang_specific_files{$lang->name}})
1324 {
1325 my ($derived, $source, $obj, $myext, $srcext, %file_transform) = @$file;
1327 # We might see a given object twice, for instance if it is
1328 # used under different conditions.
1329 next if defined $seen_files{$obj};
1330 $seen_files{$obj} = 1;
1332 prog_error ("found " . $lang->name .
1333 " in handle_languages, but compiler not defined")
1334 unless defined $lang->compile;
1336 my $obj_compile = $lang->compile;
1338 # Rewrite each occurrence of `AM_$flag' in the compile
1339 # rule into `${derived}_$flag' if it exists.
1340 for my $flag (@{$lang->flags})
1341 {
1342 my $val = "${derived}_$flag";
1343 $obj_compile =~ s/\(AM_$flag\)/\($val\)/
1344 if set_seen ($val);
1345 }
1347 my $libtool_tag = '';
1348 if ($lang->libtool_tag && exists $libtool_tags{$lang->libtool_tag})
1349 {
1350 $libtool_tag = '--tag=' . $lang->libtool_tag . ' '
1351 }
1353 my $ptltflags = "${derived}_LIBTOOLFLAGS";
1354 $ptltflags = 'AM_LIBTOOLFLAGS' unless set_seen $ptltflags;
1356 my $obj_ltcompile =
1357 "\$(LIBTOOL) $libtool_tag\$($ptltflags) \$(LIBTOOLFLAGS) "
1358 . "--mode=compile $obj_compile";
1360 # We _need_ `-o' for per object rules.
1361 my $output_flag = $lang->output_flag || '-o';
1363 my $depbase = dirname ($obj);
1364 $depbase = ''
1365 if $depbase eq '.';
1366 $depbase .= '/'
1367 unless $depbase eq '';
1368 $depbase .= '$(DEPDIR)/' . basename ($obj);
1370 # Support for deansified files in subdirectories is ugly
1371 # enough to deserve an explanation.
1372 #
1373 # A Note about normal ansi2knr processing first. On
1374 #
1375 # AUTOMAKE_OPTIONS = ansi2knr
1376 # bin_PROGRAMS = foo
1377 # foo_SOURCES = foo.c
1378 #
1379 # we generate rules similar to:
1380 #
1381 # foo: foo$U.o; link ...
1382 # foo$U.o: foo$U.c; compile ...
1383 # foo_.c: foo.c; ansi2knr ...
1384 #
1385 # this is fairly compact, and will call ansi2knr depending
1386 # on the value of $U (`' or `_').
1387 #
1388 # It's harder with subdir sources. On
1389 #
1390 # AUTOMAKE_OPTIONS = ansi2knr
1391 # bin_PROGRAMS = foo
1392 # foo_SOURCES = sub/foo.c
1393 #
1394 # we have to create foo_.c in the current directory.
1395 # (Unless the user asks 'subdir-objects'.) This is important
1396 # in case the same file (`foo.c') is compiled from other
1397 # directories with different cpp options: foo_.c would
1398 # be preprocessed for only one set of options if it were
1399 # put in the subdirectory.
1400 #
1401 # Because foo$U.o must be built from either foo_.c or
1402 # sub/foo.c we can't be as concise as in the first example.
1403 # Instead we output
1404 #
1405 # foo: foo$U.o; link ...
1406 # foo_.o: foo_.c; compile ...
1407 # foo.o: sub/foo.c; compile ...
1408 # foo_.c: foo.c; ansi2knr ...
1409 #
1410 # This is why we'll now transform $rule_file twice
1411 # if we detect this case.
1412 # A first time we output the compile rule with `$U'
1413 # replaced by `_' and the source directory removed,
1414 # and another time we simply remove `$U'.
1415 #
1416 # Note that at this point $source (as computed by
1417 # &handle_single_transform) is `sub/foo$U.c'.
1418 # This can be confusing: it can be used as-is when
1419 # subdir-objects is set, otherwise you have to know
1420 # it really means `foo_.c' or `sub/foo.c'.
1421 my $objdir = dirname ($obj);
1422 my $srcdir = dirname ($source);
1423 if ($lang->ansi && $obj =~ /\$U/)
1424 {
1425 prog_error "`$obj' contains \$U, but `$source' doesn't."
1426 if $source !~ /\$U/;
1428 (my $source_ = $source) =~ s/\$U/_/g;
1429 # Output an additional rule if _.c and .c are not in
1430 # the same directory. (_.c is always in $objdir.)
1431 if ($objdir ne $srcdir)
1432 {
1433 (my $obj_ = $obj) =~ s/\$U/_/g;
1434 (my $depbase_ = $depbase) =~ s/\$U/_/g;
1435 $source_ = basename ($source_);
1437 $output_rules .=
1438 file_contents ($rule_file,
1439 new Automake::Location,
1440 %transform,
1441 GENERIC => 0,
1443 DEPBASE => $depbase_,
1444 BASE => $obj_,
1445 SOURCE => $source_,
1446 SOURCEFLAG => $sourceflags{$srcext} || '',
1447 OBJ => "$obj_$myext",
1448 OBJOBJ => "$obj_.obj",
1449 LTOBJ => "$obj_.lo",
1451 COMPILE => $obj_compile,
1452 LTCOMPILE => $obj_ltcompile,
1453 -o => $output_flag,
1454 %file_transform);
1455 $obj =~ s/\$U//g;
1456 $depbase =~ s/\$U//g;
1457 $source =~ s/\$U//g;
1458 }
1459 }
1461 $output_rules .=
1462 file_contents ($rule_file,
1463 new Automake::Location,
1464 %transform,
1465 GENERIC => 0,
1467 DEPBASE => $depbase,
1468 BASE => $obj,
1469 SOURCE => $source,
1470 SOURCEFLAG => $sourceflags{$srcext} || '',
1471 # Use $myext and not `.o' here, in case
1472 # we are actually building a new source
1473 # file -- e.g. via yacc.
1474 OBJ => "$obj$myext",
1475 OBJOBJ => "$obj.obj",
1476 LTOBJ => "$obj.lo",
1478 COMPILE => $obj_compile,
1479 LTCOMPILE => $obj_ltcompile,
1480 -o => $output_flag,
1481 %file_transform);
1482 }
1484 # The rest of the loop is done once per language.
1485 next if defined $done{$lang};
1486 $done{$lang} = 1;
1488 # Load the language dependent Makefile chunks.
1489 my %lang = map { uc ($_) => 0 } keys %languages;
1490 $lang{uc ($lang->name)} = 1;
1491 $output_rules .= file_contents ('lang-compile',
1492 new Automake::Location,
1493 %transform, %lang);
1495 # If the source to a program consists entirely of code from a
1496 # `pure' language, for instance C++ or Fortran 77, then we
1497 # don't need the C compiler code. However if we run into
1498 # something unusual then we do generate the C code. There are
1499 # probably corner cases here that do not work properly.
1500 # People linking Java code to Fortran code deserve pain.
1501 $needs_c ||= ! $lang->pure;
1503 define_compiler_variable ($lang)
1504 if ($lang->compile);
1506 define_linker_variable ($lang)
1507 if ($lang->link);
1509 require_variables ("$am_file.am", $lang->Name . " source seen",
1510 TRUE, @{$lang->config_vars});
1512 # Call the finisher.
1513 $lang->finish;
1515 # Flags listed in `->flags' are user variables (per GNU Standards),
1516 # they should not be overridden in the Makefile...
1517 my @dont_override = @{$lang->flags};
1518 # ... and so is LDFLAGS.
1519 push @dont_override, 'LDFLAGS' if $lang->link;
1521 check_user_variables @dont_override;
1522 }
1524 # If the project is entirely C++ or entirely Fortran 77 (i.e., 1
1525 # suffix rule was learned), don't bother with the C stuff. But if
1526 # anything else creeps in, then use it.
1527 $needs_c = 1
1528 if $need_link || suffix_rules_count > 1;
1530 if ($needs_c)
1531 {
1532 &define_compiler_variable ($languages{'c'})
1533 unless defined $done{$languages{'c'}};
1534 define_linker_variable ($languages{'c'});
1535 }
1536 }
1539 # append_exeext { PREDICATE } $MACRO
1540 # ----------------------------------
1541 # Append $(EXEEXT) to each filename in $F appearing in the Makefile
1542 # variable $MACRO if &PREDICATE($F) is true. @substitutions@ are
1543 # ignored.
1544 #
1545 # This is typically used on all filenames of *_PROGRAMS, and filenames
1546 # of TESTS that are programs.
1547 sub append_exeext (&$)
1548 {
1549 my ($pred, $macro) = @_;
1551 transform_variable_recursively
1552 ($macro, $macro, 'am__EXEEXT', 0, INTERNAL,
1553 sub {
1554 my ($subvar, $val, $cond, $full_cond) = @_;
1555 # Append $(EXEEXT) unless the user did it already, or it's a
1556 # @substitution@.
1557 $val .= '$(EXEEXT)'
1558 if $val !~ /(?:\$\(EXEEXT\)$|^[@]\w+[@]$)/ && &$pred ($val);
1559 return $val;
1560 });
1561 }
1564 # Check to make sure a source defined in LIBOBJS is not explicitly
1565 # mentioned. This is a separate function (as opposed to being inlined
1566 # in handle_source_transform) because it isn't always appropriate to
1567 # do this check.
1568 sub check_libobjs_sources
1569 {
1570 my ($one_file, $unxformed) = @_;
1572 foreach my $prefix ('', 'EXTRA_', 'dist_', 'nodist_',
1573 'dist_EXTRA_', 'nodist_EXTRA_')
1574 {
1575 my @files;
1576 my $varname = $prefix . $one_file . '_SOURCES';
1577 my $var = var ($varname);
1578 if ($var)
1579 {
1580 @files = $var->value_as_list_recursive;
1581 }
1582 elsif ($prefix eq '')
1583 {
1584 @files = ($unxformed . '.c');
1585 }
1586 else
1587 {
1588 next;
1589 }
1591 foreach my $file (@files)
1592 {
1593 err_var ($prefix . $one_file . '_SOURCES',
1594 "automatically discovered file `$file' should not" .
1595 " be explicitly mentioned")
1596 if defined $libsources{$file};
1597 }
1598 }
1599 }
1602 # @OBJECTS
1603 # handle_single_transform ($VAR, $TOPPARENT, $DERIVED, $OBJ, $FILE, %TRANSFORM)
1604 # -----------------------------------------------------------------------------
1605 # Does much of the actual work for handle_source_transform.
1606 # Arguments are:
1607 # $VAR is the name of the variable that the source filenames come from
1608 # $TOPPARENT is the name of the _SOURCES variable which is being processed
1609 # $DERIVED is the name of resulting executable or library
1610 # $OBJ is the object extension (e.g., `$U.lo')
1611 # $FILE the source file to transform
1612 # %TRANSFORM contains extras arguments to pass to file_contents
1613 # when producing explicit rules
1614 # Result is a list of the names of objects
1615 # %linkers_used will be updated with any linkers needed
1616 sub handle_single_transform ($$$$$%)
1617 {
1618 my ($var, $topparent, $derived, $obj, $_file, %transform) = @_;
1619 my @files = ($_file);
1620 my @result = ();
1621 my $nonansi_obj = $obj;
1622 $nonansi_obj =~ s/\$U//g;
1624 # Turn sources into objects. We use a while loop like this
1625 # because we might add to @files in the loop.
1626 while (scalar @files > 0)
1627 {
1628 $_ = shift @files;
1630 # Configure substitutions in _SOURCES variables are errors.
1631 if (/^\@.*\@$/)
1632 {
1633 my $parent_msg = '';
1634 $parent_msg = "\nand is referred to from `$topparent'"
1635 if $topparent ne $var->name;
1636 err_var ($var,
1637 "`" . $var->name . "' includes configure substitution `$_'"
1638 . $parent_msg . ";\nconfigure " .
1639 "substitutions are not allowed in _SOURCES variables");
1640 next;
1641 }
1643 # If the source file is in a subdirectory then the `.o' is put
1644 # into the current directory, unless the subdir-objects option
1645 # is in effect.
1647 # Split file name into base and extension.
1648 next if ! /^(?:(.*)\/)?([^\/]*)($KNOWN_EXTENSIONS_PATTERN)$/;
1649 my $full = $_;
1650 my $directory = $1 || '';
1651 my $base = $2;
1652 my $extension = $3;
1654 # We must generate a rule for the object if it requires its own flags.
1655 my $renamed = 0;
1656 my ($linker, $object);
1658 # This records whether we've seen a derived source file (e.g.
1659 # yacc output).
1660 my $derived_source = 0;
1662 # This holds the `aggregate context' of the file we are
1663 # currently examining. If the file is compiled with
1664 # per-object flags, then it will be the name of the object.
1665 # Otherwise it will be `AM'. This is used by the target hook
1666 # language function.
1667 my $aggregate = 'AM';
1669 $extension = &derive_suffix ($extension, $nonansi_obj);
1670 my $lang;
1671 if ($extension_map{$extension} &&
1672 ($lang = $languages{$extension_map{$extension}}))
1673 {
1674 # Found the language, so see what it says.
1675 &saw_extension ($extension);
1677 # Do we have per-executable flags for this executable?
1678 my $have_per_exec_flags = 0;
1679 my @peflags = @{$lang->flags};
1680 push @peflags, 'LIBTOOLFLAGS' if $nonansi_obj eq '.lo';
1681 foreach my $flag (@peflags)
1682 {
1683 if (set_seen ("${derived}_$flag"))
1684 {
1685 $have_per_exec_flags = 1;
1686 last;
1687 }
1688 }
1690 # Note: computed subr call. The language rewrite function
1691 # should return one of the LANG_* constants. It could
1692 # also return a list whose first value is such a constant
1693 # and whose second value is a new source extension which
1694 # should be applied. This means this particular language
1695 # generates another source file which we must then process
1696 # further.
1697 my $subr = \&{'lang_' . $lang->name . '_rewrite'};
1698 my ($r, $source_extension)
1699 = &$subr ($directory, $base, $extension,
1700 $nonansi_obj, $have_per_exec_flags, $var);
1701 # Skip this entry if we were asked not to process it.
1702 next if $r == LANG_IGNORE;
1704 # Now extract linker and other info.
1705 $linker = $lang->linker;
1707 my $this_obj_ext;
1708 if (defined $source_extension)
1709 {
1710 $this_obj_ext = $source_extension;
1711 $derived_source = 1;
1712 }
1713 elsif ($lang->ansi)
1714 {
1715 $this_obj_ext = $obj;
1716 }
1717 else
1718 {
1719 $this_obj_ext = $nonansi_obj;
1720 }
1721 $object = $base . $this_obj_ext;
1723 if ($have_per_exec_flags)
1724 {
1725 # We have a per-executable flag in effect for this
1726 # object. In this case we rewrite the object's
1727 # name to ensure it is unique.
1729 # We choose the name `DERIVED_OBJECT' to ensure
1730 # (1) uniqueness, and (2) continuity between
1731 # invocations. However, this will result in a
1732 # name that is too long for losing systems, in
1733 # some situations. So we provide _SHORTNAME to
1734 # override.
1736 my $dname = $derived;
1737 my $var = var ($derived . '_SHORTNAME');
1738 if ($var)
1739 {
1740 # FIXME: should use the same Condition as
1741 # the _SOURCES variable. But this is really
1742 # silly overkill -- nobody should have
1743 # conditional shortnames.
1744 $dname = $var->variable_value;
1745 }
1746 $object = $dname . '-' . $object;
1748 prog_error ($lang->name . " flags defined without compiler")
1749 if ! defined $lang->compile;
1751 $renamed = 1;
1752 }
1754 # If rewrite said it was ok, put the object into a
1755 # subdir.
1756 if ($r == LANG_SUBDIR && $directory ne '')
1757 {
1758 $object = $directory . '/' . $object;
1759 }
1761 # If the object file has been renamed (because per-target
1762 # flags are used) we cannot compile the file with an
1763 # inference rule: we need an explicit rule.
1764 #
1765 # If the source is in a subdirectory and the object is in
1766 # the current directory, we also need an explicit rule.
1767 #
1768 # If both source and object files are in a subdirectory
1769 # (this happens when the subdir-objects option is used),
1770 # then the inference will work.
1771 #
1772 # The latter case deserves a historical note. When the
1773 # subdir-objects option was added on 1999-04-11 it was
1774 # thought that inferences rules would work for
1775 # subdirectory objects too. Later, on 1999-11-22,
1776 # automake was changed to output explicit rules even for
1777 # subdir-objects. Nobody remembers why, but this occurred
1778 # soon after the merge of the user-dep-gen-branch so it
1779 # might be related. In late 2003 people complained about
1780 # the size of the generated Makefile.ins (libgcj, with
1781 # 2200+ subdir objects was reported to have a 9MB
1782 # Makefile), so we now rely on inference rules again.
1783 # Maybe we'll run across the same issue as in the past,
1784 # but at least this time we can document it. However since
1785 # dependency tracking has evolved it is possible that
1786 # our old problem no longer exists.
1787 # Using inference rules for subdir-objects has been tested
1788 # with GNU make, Solaris make, Ultrix make, BSD make,
1789 # HP-UX make, and OSF1 make successfully.
1790 if ($renamed
1791 || ($directory ne '' && ! option 'subdir-objects')
1792 # We must also use specific rules for a nodist_ source
1793 # if its language requests it.
1794 || ($lang->nodist_specific && ! $transform{'DIST_SOURCE'}))
1795 {
1796 my $obj_sans_ext = substr ($object, 0,
1797 - length ($this_obj_ext));
1798 my $full_ansi = $full;
1799 if ($lang->ansi && option 'ansi2knr')
1800 {
1801 $full_ansi =~ s/$KNOWN_EXTENSIONS_PATTERN$/\$U$&/;
1802 $obj_sans_ext .= '$U';
1803 }
1805 my @specifics = ($full_ansi, $obj_sans_ext,
1806 # Only use $this_obj_ext in the derived
1807 # source case because in the other case we
1808 # *don't* want $(OBJEXT) to appear here.
1809 ($derived_source ? $this_obj_ext : '.o'),
1810 $extension);
1812 # If we renamed the object then we want to use the
1813 # per-executable flag name. But if this is simply a
1814 # subdir build then we still want to use the AM_ flag
1815 # name.
1816 if ($renamed)
1817 {
1818 unshift @specifics, $derived;
1819 $aggregate = $derived;
1820 }
1821 else
1822 {
1823 unshift @specifics, 'AM';
1824 }
1826 # Each item on this list is a reference to a list consisting
1827 # of four values followed by additional transform flags for
1828 # file_contents. The four values are the derived flag prefix
1829 # (e.g. for `foo_CFLAGS', it is `foo'), the name of the
1830 # source file, the base name of the output file, and
1831 # the extension for the object file.
1832 push (@{$lang_specific_files{$lang->name}},
1833 [@specifics, %transform]);
1834 }
1835 }
1836 elsif ($extension eq $nonansi_obj)
1837 {
1838 # This is probably the result of a direct suffix rule.
1839 # In this case we just accept the rewrite.
1840 $object = "$base$extension";
1841 $object = "$directory/$object" if $directory ne '';
1842 $linker = '';
1843 }
1844 else
1845 {
1846 # No error message here. Used to have one, but it was
1847 # very unpopular.
1848 # FIXME: we could potentially do more processing here,
1849 # perhaps treating the new extension as though it were a
1850 # new source extension (as above). This would require
1851 # more restructuring than is appropriate right now.
1852 next;
1853 }
1855 err_am "object `$object' created by `$full' and `$object_map{$object}'"
1856 if (defined $object_map{$object}
1857 && $object_map{$object} ne $full);
1859 my $comp_val = (($object =~ /\.lo$/)
1860 ? COMPILE_LIBTOOL : COMPILE_ORDINARY);
1861 (my $comp_obj = $object) =~ s/\.lo$/.\$(OBJEXT)/;
1862 if (defined $object_compilation_map{$comp_obj}
1863 && $object_compilation_map{$comp_obj} != 0
1864 # Only see the error once.
1865 && ($object_compilation_map{$comp_obj}
1866 != (COMPILE_LIBTOOL | COMPILE_ORDINARY))
1867 && $object_compilation_map{$comp_obj} != $comp_val)
1868 {
1869 err_am "object `$comp_obj' created both with libtool and without";
1870 }
1871 $object_compilation_map{$comp_obj} |= $comp_val;
1873 if (defined $lang)
1874 {
1875 # Let the language do some special magic if required.
1876 $lang->target_hook ($aggregate, $object, $full, %transform);
1877 }
1879 if ($derived_source)
1880 {
1881 prog_error ($lang->name . " has automatic dependency tracking")
1882 if $lang->autodep ne 'no';
1883 # Make sure this new source file is handled next. That will
1884 # make it appear to be at the right place in the list.
1885 unshift (@files, $object);
1886 # Distribute derived sources unless the source they are
1887 # derived from is not.
1888 &push_dist_common ($object)
1889 unless ($topparent =~ /^(?:nobase_)?nodist_/);
1890 next;
1891 }
1893 $linkers_used{$linker} = 1;
1895 push (@result, $object);
1897 if (! defined $object_map{$object})
1898 {
1899 my @dep_list = ();
1900 $object_map{$object} = $full;
1902 # If resulting object is in subdir, we need to make
1903 # sure the subdir exists at build time.
1904 if ($object =~ /\//)
1905 {
1906 # FIXME: check that $DIRECTORY is somewhere in the
1907 # project
1909 # For Java, the way we're handling it right now, a
1910 # `..' component doesn't make sense.
1911 if ($lang && $lang->name eq 'java' && $object =~ /(\/|^)\.\.\//)
1912 {
1913 err_am "`$full' should not contain a `..' component";
1914 }
1916 # Make sure object is removed by `make mostlyclean'.
1917 $compile_clean_files{$object} = MOSTLY_CLEAN;
1918 # If we have a libtool object then we also must remove
1919 # the ordinary .o.
1920 if ($object =~ /\.lo$/)
1921 {
1922 (my $xobj = $object) =~ s,lo$,\$(OBJEXT),;
1923 $compile_clean_files{$xobj} = MOSTLY_CLEAN;
1925 # Remove any libtool object in this directory.
1926 $libtool_clean_directories{$directory} = 1;
1927 }
1929 push (@dep_list, require_build_directory ($directory));
1931 # If we're generating dependencies, we also want
1932 # to make sure that the appropriate subdir of the
1933 # .deps directory is created.
1934 push (@dep_list,
1935 require_build_directory ($directory . '/$(DEPDIR)'))
1936 unless option 'no-dependencies';
1937 }
1939 &pretty_print_rule ($object . ':', "\t", @dep_list)
1940 if scalar @dep_list > 0;
1941 }
1943 # Transform .o or $o file into .P file (for automatic
1944 # dependency code).
1945 if ($lang && $lang->autodep ne 'no')
1946 {
1947 my $depfile = $object;
1948 $depfile =~ s/\.([^.]*)$/.P$1/;
1949 $depfile =~ s/\$\(OBJEXT\)$/o/;
1950 $dep_files{dirname ($depfile) . '/$(DEPDIR)/'
1951 . basename ($depfile)} = 1;
1952 }
1953 }
1955 return @result;
1956 }
1959 # $LINKER
1960 # define_objects_from_sources ($VAR, $OBJVAR, $NODEFINE, $ONE_FILE,
1961 # $OBJ, $PARENT, $TOPPARENT, $WHERE, %TRANSFORM)
1962 # ---------------------------------------------------------------------------
1963 # Define an _OBJECTS variable for a _SOURCES variable (or subvariable)
1964 #
1965 # Arguments are:
1966 # $VAR is the name of the _SOURCES variable
1967 # $OBJVAR is the name of the _OBJECTS variable if known (otherwise
1968 # it will be generated and returned).
1969 # $NODEFINE is a boolean: if true, $OBJVAR will not be defined (but
1970 # work done to determine the linker will be).
1971 # $ONE_FILE is the canonical (transformed) name of object to build
1972 # $OBJ is the object extension (i.e. either `.o' or `.lo').
1973 # $TOPPARENT is the _SOURCES variable being processed.
1974 # $WHERE context into which this definition is done
1975 # %TRANSFORM extra arguments to pass to file_contents when producing
1976 # rules
1977 #
1978 # Result is a pair ($LINKER, $OBJVAR):
1979 # $LINKER is a boolean, true if a linker is needed to deal with the objects
1980 sub define_objects_from_sources ($$$$$$$%)
1981 {
1982 my ($var, $objvar, $nodefine, $one_file,
1983 $obj, $topparent, $where, %transform) = @_;
1985 my $needlinker = "";
1987 transform_variable_recursively
1988 ($var, $objvar, 'am__objects', $nodefine, $where,
1989 # The transform code to run on each filename.
1990 sub {
1991 my ($subvar, $val, $cond, $full_cond) = @_;
1992 my @trans = handle_single_transform ($subvar, $topparent,
1993 $one_file, $obj, $val,
1994 %transform);
1995 $needlinker = "true" if @trans;
1996 return @trans;
1997 });
1999 return $needlinker;
2000 }
2003 # handle_source_transform ($CANON_TARGET, $TARGET, $OBJEXT, $WHERE, %TRANSFORM)
2004 # -----------------------------------------------------------------------------
2005 # Handle SOURCE->OBJECT transform for one program or library.
2006 # Arguments are:
2007 # canonical (transformed) name of target to build
2008 # actual target of object to build
2009 # object extension (i.e., either `.o' or `$o')
2010 # location of the source variable
2011 # extra arguments to pass to file_contents when producing rules
2012 # Return the name of the linker variable that must be used.
2013 # Empty return means just use `LINK'.
2014 sub handle_source_transform ($$$$%)
2015 {
2016 # one_file is canonical name. unxformed is given name. obj is
2017 # object extension.
2018 my ($one_file, $unxformed, $obj, $where, %transform) = @_;
2020 my $linker = '';
2022 # No point in continuing if _OBJECTS is defined.
2023 return if reject_var ($one_file . '_OBJECTS',
2024 $one_file . '_OBJECTS should not be defined');
2026 my %used_pfx = ();
2027 my $needlinker;
2028 %linkers_used = ();
2029 foreach my $prefix ('', 'EXTRA_', 'dist_', 'nodist_',
2030 'dist_EXTRA_', 'nodist_EXTRA_')
2031 {
2032 my $varname = $prefix . $one_file . "_SOURCES";
2033 my $var = var $varname;
2034 next unless $var;
2036 # We are going to define _OBJECTS variables using the prefix.
2037 # Then we glom them all together. So we can't use the null
2038 # prefix here as we need it later.
2039 my $xpfx = ($prefix eq '') ? 'am_' : $prefix;
2041 # Keep track of which prefixes we saw.
2042 $used_pfx{$xpfx} = 1
2043 unless $prefix =~ /EXTRA_/;
2045 push @sources, "\$($varname)";
2046 push @dist_sources, shadow_unconditionally ($varname, $where)
2047 unless (option ('no-dist') || $prefix =~ /^nodist_/);
2049 $needlinker |=
2050 define_objects_from_sources ($varname,
2051 $xpfx . $one_file . '_OBJECTS',
2052 $prefix =~ /EXTRA_/,
2053 $one_file, $obj, $varname, $where,
2054 DIST_SOURCE => ($prefix !~ /^nodist_/),
2055 %transform);
2056 }
2057 if ($needlinker)
2058 {
2059 $linker ||= &resolve_linker (%linkers_used);
2060 }
2062 my @keys = sort keys %used_pfx;
2063 if (scalar @keys == 0)
2064 {
2065 # The default source for libfoo.la is libfoo.c, but for
2066 # backward compatibility we first look at libfoo_la.c,
2067 # if no default source suffix is given.
2068 my $old_default_source = "$one_file.c";
2069 my $ext_var = var ('AM_DEFAULT_SOURCE_EXT');
2070 my $default_source_ext = $ext_var ? variable_value ($ext_var) : '.c';
2071 msg_var ('unsupported', $ext_var, $ext_var->name . " can assume at most one value")
2072 if $default_source_ext =~ /[\t ]/;
2073 (my $default_source = $unxformed) =~ s,(\.[^./\\]*)?$,$default_source_ext,;
2074 if ($old_default_source ne $default_source
2075 && !$ext_var
2076 && (rule $old_default_source
2077 || rule '$(srcdir)/' . $old_default_source
2078 || rule '${srcdir}/' . $old_default_source
2079 || -f $old_default_source))
2080 {
2081 my $loc = $where->clone;
2082 $loc->pop_context;
2083 msg ('obsolete', $loc,
2084 "the default source for `$unxformed' has been changed "
2085 . "to `$default_source'.\n(Using `$old_default_source' for "
2086 . "backward compatibility.)");
2087 $default_source = $old_default_source;
2088 }
2089 # If a rule exists to build this source with a $(srcdir)
2090 # prefix, use that prefix in our variables too. This is for
2091 # the sake of BSD Make.
2092 if (rule '$(srcdir)/' . $default_source
2093 || rule '${srcdir}/' . $default_source)
2094 {
2095 $default_source = '$(srcdir)/' . $default_source;
2096 }
2098 &define_variable ($one_file . "_SOURCES", $default_source, $where);
2099 push (@sources, $default_source);
2100 push (@dist_sources, $default_source);
2102 %linkers_used = ();
2103 my (@result) =
2104 handle_single_transform ($one_file . '_SOURCES',
2105 $one_file . '_SOURCES',
2106 $one_file, $obj,
2107 $default_source, %transform);
2108 $linker ||= &resolve_linker (%linkers_used);
2109 define_pretty_variable ($one_file . '_OBJECTS', TRUE, $where, @result);
2110 }
2111 else
2112 {
2113 @keys = map { '$(' . $_ . $one_file . '_OBJECTS)' } @keys;
2114 define_pretty_variable ($one_file . '_OBJECTS', TRUE, $where, @keys);
2115 }
2117 # If we want to use `LINK' we must make sure it is defined.
2118 if ($linker eq '')
2119 {
2120 $need_link = 1;
2121 }
2123 return $linker;
2124 }
2127 # handle_lib_objects ($XNAME, $VAR)
2128 # ---------------------------------
2129 # Special-case ALLOCA and LIBOBJS substitutions in _LDADD or _LIBADD variables.
2130 # Also, generate _DEPENDENCIES variable if appropriate.
2131 # Arguments are:
2132 # transformed name of object being built, or empty string if no object
2133 # name of _LDADD/_LIBADD-type variable to examine
2134 # Returns 1 if LIBOBJS seen, 0 otherwise.
2135 sub handle_lib_objects
2136 {
2137 my ($xname, $varname) = @_;
2139 my $var = var ($varname);
2140 prog_error "handle_lib_objects: `$varname' undefined"
2141 unless $var;
2142 prog_error "handle_lib_objects: unexpected variable name `$varname'"
2143 unless $varname =~ /^(.*)(?:LIB|LD)ADD$/;
2144 my $prefix = $1 || 'AM_';
2146 my $seen_libobjs = 0;
2147 my $flagvar = 0;
2149 transform_variable_recursively
2150 ($varname, $xname . '_DEPENDENCIES', 'am__DEPENDENCIES',
2151 ! $xname, INTERNAL,
2152 # Transformation function, run on each filename.
2153 sub {
2154 my ($subvar, $val, $cond, $full_cond) = @_;
2156 if ($val =~ /^-/)
2157 {
2158 # Skip -lfoo and -Ldir silently; these are explicitly allowed.
2159 if ($val !~ /^-[lL]/ &&
2160 # Skip -dlopen and -dlpreopen; these are explicitly allowed
2161 # for Libtool libraries or programs. (Actually we are a bit
2162 # laxe here since this code also applies to non-libtool
2163 # libraries or programs, for which -dlopen and -dlopreopen
2164 # are pure nonsense. Diagnosing this doesn't seem very
2165 # important: the developer will quickly get complaints from
2166 # the linker.)
2167 $val !~ /^-dl(?:pre)?open$/ &&
2168 # Only get this error once.
2169 ! $flagvar)
2170 {
2171 $flagvar = 1;
2172 # FIXME: should display a stack of nested variables
2173 # as context when $var != $subvar.
2174 err_var ($var, "linker flags such as `$val' belong in "
2175 . "`${prefix}LDFLAGS");
2176 }
2177 return ();
2178 }
2179 elsif ($val !~ /^\@.*\@$/)
2180 {
2181 # Assume we have a file of some sort, and output it into the
2182 # dependency variable. Autoconf substitutions are not output;
2183 # rarely is a new dependency substituted into e.g. foo_LDADD
2184 # -- but bad things (e.g. -lX11) are routinely substituted.
2185 # Note that LIBOBJS and ALLOCA are exceptions to this rule,
2186 # and handled specially below.
2187 return $val;
2188 }
2189 elsif ($val =~ /^\@(LT)?LIBOBJS\@$/)
2190 {
2191 handle_LIBOBJS ($subvar, $cond, $1);
2192 $seen_libobjs = 1;
2193 return $val;
2194 }
2195 elsif ($val =~ /^\@(LT)?ALLOCA\@$/)
2196 {
2197 handle_ALLOCA ($subvar, $cond, $1);
2198 return $val;
2199 }
2200 else
2201 {
2202 return ();
2203 }
2204 });
2206 return $seen_libobjs;
2207 }
2209 # handle_LIBOBJS_or_ALLOCA ($VAR)
2210 # -------------------------------
2211 # Definitions common to LIBOBJS and ALLOCA.
2212 # VAR should be one of LIBOBJS, LTLIBOBJS, ALLOCA, or LTALLOCA.
2213 sub handle_LIBOBJS_or_ALLOCA ($)
2214 {
2215 my ($var) = @_;
2217 my $dir = '';
2219 # If LIBOBJS files must be built in another directory we have
2220 # to define LIBOBJDIR and ensure the files get cleaned.
2221 # Otherwise LIBOBJDIR can be left undefined, and the cleaning
2222 # is achieved by `rm -f *.$(OBJEXT)' in compile.am.
2223 if ($config_libobj_dir
2224 && $relative_dir ne $config_libobj_dir)
2225 {
2226 if (option 'subdir-objects')
2227 {
2228 # In the top-level Makefile we do not use $(top_builddir), because
2229 # we are already there, and since the targets are built without
2230 # a $(top_builddir), it helps BSD Make to match them with
2231 # dependencies.
2232 $dir = "$config_libobj_dir/" if $config_libobj_dir ne '.';
2233 $dir = "$topsrcdir/$dir" if $relative_dir ne '.';
2234 define_variable ('LIBOBJDIR', "$dir", INTERNAL);
2235 $clean_files{"\$($var)"} = MOSTLY_CLEAN;
2236 # If LTLIBOBJS is used, we must also clear LIBOBJS (which might
2237 # be created by libtool as a side-effect of creating LTLIBOBJS).
2238 $clean_files{"\$($var)"} = MOSTLY_CLEAN if $var =~ s/^LT//;
2239 }
2240 else
2241 {
2242 error ("`\$($var)' cannot be used outside `$config_libobj_dir' if"
2243 . " `subdir-objects' is not set");
2244 }
2245 }
2247 return $dir;
2248 }
2250 sub handle_LIBOBJS ($$$)
2251 {
2252 my ($var, $cond, $lt) = @_;
2253 my $myobjext = $lt ? 'lo' : 'o';
2254 $lt ||= '';
2256 $var->requires_variables ("\@${lt}LIBOBJS\@ used", $lt . 'LIBOBJS')
2257 if ! keys %libsources;
2259 my $dir = handle_LIBOBJS_or_ALLOCA "${lt}LIBOBJS";
2261 foreach my $iter (keys %libsources)
2262 {
2263 if ($iter =~ /\.[cly]$/)
2264 {
2265 &saw_extension ($&);
2266 &saw_extension ('.c');
2267 }
2269 if ($iter =~ /\.h$/)
2270 {
2271 require_libsource_with_macro ($cond, $var, FOREIGN, $iter);
2272 }
2273 elsif ($iter ne 'alloca.c')
2274 {
2275 my $rewrite = $iter;
2276 $rewrite =~ s/\.c$/.P$myobjext/;
2277 $dep_files{$dir . '$(DEPDIR)/' . $rewrite} = 1;
2278 $rewrite = "^" . quotemeta ($iter) . "\$";
2279 # Only require the file if it is not a built source.
2280 my $bs = var ('BUILT_SOURCES');
2281 if (! $bs || ! grep (/$rewrite/, $bs->value_as_list_recursive))
2282 {
2283 require_libsource_with_macro ($cond, $var, FOREIGN, $iter);
2284 }
2285 }
2286 }
2287 }
2289 sub handle_ALLOCA ($$$)
2290 {
2291 my ($var, $cond, $lt) = @_;
2292 my $myobjext = $lt ? 'lo' : 'o';
2293 $lt ||= '';
2294 my $dir = handle_LIBOBJS_or_ALLOCA "${lt}ALLOCA";
2296 $var->requires_variables ("\@${lt}ALLOCA\@ used", $lt . 'ALLOCA');
2297 $dep_files{$dir . '$(DEPDIR)/alloca.P' . $myobjext} = 1;
2298 require_libsource_with_macro ($cond, $var, FOREIGN, 'alloca.c');
2299 &saw_extension ('.c');
2300 }
2302 # Canonicalize the input parameter
2303 sub canonicalize
2304 {
2305 my ($string) = @_;
2306 $string =~ tr/A-Za-z0-9_\@/_/c;
2307 return $string;
2308 }
2310 # Canonicalize a name, and check to make sure the non-canonical name
2311 # is never used. Returns canonical name. Arguments are name and a
2312 # list of suffixes to check for.
2313 sub check_canonical_spelling
2314 {
2315 my ($name, @suffixes) = @_;
2317 my $xname = &canonicalize ($name);
2318 if ($xname ne $name)
2319 {
2320 foreach my $xt (@suffixes)
2321 {
2322 reject_var ("$name$xt", "use `$xname$xt', not `$name$xt'");
2323 }
2324 }
2326 return $xname;
2327 }
2330 # handle_compile ()
2331 # -----------------
2332 # Set up the compile suite.
2333 sub handle_compile ()
2334 {
2335 return
2336 unless $get_object_extension_was_run;
2338 # Boilerplate.
2339 my $default_includes = '';
2340 if (! option 'nostdinc')
2341 {
2342 my @incs = ('-I.', subst ('am__isrc'));
2344 my $var = var 'CONFIG_HEADER';
2345 if ($var)
2346 {
2347 foreach my $hdr (split (' ', $var->variable_value))
2348 {
2349 push @incs, '-I' . dirname ($hdr);
2350 }
2351 }
2352 # We want `-I. -I$(srcdir)', but the latter -I is redundant
2353 # and unaesthetic in non-VPATH builds. We use `-I.@am__isrc@`
2354 # instead. It will be replaced by '-I.' or '-I. -I$(srcdir)'.
2355 # Items in CONFIG_HEADER are never in $(srcdir) so it is safe
2356 # to just put @am__isrc@ right after `-I.', without a space.
2357 ($default_includes = ' ' . uniq (@incs)) =~ s/ @/@/;
2358 }
2360 my (@mostly_rms, @dist_rms);
2361 foreach my $item (sort keys %compile_clean_files)
2362 {
2363 if ($compile_clean_files{$item} == MOSTLY_CLEAN)
2364 {
2365 push (@mostly_rms, "\t-rm -f $item");
2366 }
2367 elsif ($compile_clean_files{$item} == DIST_CLEAN)
2368 {
2369 push (@dist_rms, "\t-rm -f $item");
2370 }
2371 else
2372 {
2373 prog_error 'invalid entry in %compile_clean_files';
2374 }
2375 }
2377 my ($coms, $vars, $rules) =
2378 &file_contents_internal (1, "$libdir/am/compile.am",
2379 new Automake::Location,
2380 ('DEFAULT_INCLUDES' => $default_includes,
2381 'MOSTLYRMS' => join ("\n", @mostly_rms),
2382 'DISTRMS' => join ("\n", @dist_rms)));
2383 $output_vars .= $vars;
2384 $output_rules .= "$coms$rules";
2386 # Check for automatic de-ANSI-fication.
2387 if (option 'ansi2knr')
2388 {
2389 my ($ansi2knr_filename, $ansi2knr_where) = @{option 'ansi2knr'};
2390 my $ansi2knr_dir = '';
2392 require_variables ($ansi2knr_where, "option `ansi2knr' is used",
2393 TRUE, "ANSI2KNR", "U");
2395 # topdir is where ansi2knr should be.
2396 if ($ansi2knr_filename eq 'ansi2knr')
2397 {
2398 # Only require ansi2knr files if they should appear in
2399 # this directory.
2400 require_file ($ansi2knr_where, FOREIGN,
2401 'ansi2knr.c', 'ansi2knr.1');
2403 # ansi2knr needs to be built before subdirs, so unshift it.
2404 unshift (@all, '$(ANSI2KNR)');
2405 }
2406 else
2407 {
2408 $ansi2knr_dir = dirname ($ansi2knr_filename);
2409 }
2411 $output_rules .= &file_contents ('ansi2knr',
2412 new Automake::Location,
2413 'ANSI2KNR-DIR' => $ansi2knr_dir);
2415 }
2416 }
2418 # handle_libtool ()
2419 # -----------------
2420 # Handle libtool rules.
2421 sub handle_libtool
2422 {
2423 return unless var ('LIBTOOL');
2425 # Libtool requires some files, but only at top level.
2426 # (Starting with Libtool 2.0 we do not have to bother. These
2427 # requirements are done with AC_REQUIRE_AUX_FILE.)
2428 require_conf_file_with_macro (TRUE, 'LIBTOOL', FOREIGN, @libtool_files)
2429 if $relative_dir eq '.' && ! $libtool_new_api;
2431 my @libtool_rms;
2432 foreach my $item (sort keys %libtool_clean_directories)
2433 {
2434 my $dir = ($item eq '.') ? '' : "$item/";
2435 # .libs is for Unix, _libs for DOS.
2436 push (@libtool_rms, "\t-rm -rf ${dir}.libs ${dir}_libs");
2437 }
2439 check_user_variables 'LIBTOOLFLAGS';
2441 # Output the libtool compilation rules.
2442 $output_rules .= &file_contents ('libtool',
2443 new Automake::Location,
2444 LTRMS => join ("\n", @libtool_rms));
2445 }
2447 # handle_programs ()
2448 # ------------------
2449 # Handle C programs.
2450 sub handle_programs
2451 {
2452 my @proglist = &am_install_var ('progs', 'PROGRAMS',
2453 'bin', 'sbin', 'libexec', 'pkglib',
2454 'noinst', 'check');
2455 return if ! @proglist;
2457 my $seen_global_libobjs =
2458 var ('LDADD') && &handle_lib_objects ('', 'LDADD');
2460 foreach my $pair (@proglist)
2461 {
2462 my ($where, $one_file) = @$pair;
2464 my $seen_libobjs = 0;
2465 my $obj = get_object_extension '.$(OBJEXT)';
2467 # Strip any $(EXEEXT) suffix the user might have added, or this
2468 # will confuse &handle_source_transform and &check_canonical_spelling.
2469 # We'll add $(EXEEXT) back later anyway.
2470 $one_file =~ s/\$\(EXEEXT\)$//;
2472 $known_programs{$one_file} = $where;
2474 # Canonicalize names and check for misspellings.
2475 my $xname = &check_canonical_spelling ($one_file, '_LDADD', '_LDFLAGS',
2476 '_SOURCES', '_OBJECTS',
2477 '_DEPENDENCIES');
2479 $where->push_context ("while processing program `$one_file'");
2480 $where->set (INTERNAL->get);
2482 my $linker = &handle_source_transform ($xname, $one_file, $obj, $where,
2483 NONLIBTOOL => 1, LIBTOOL => 0);
2485 if (var ($xname . "_LDADD"))
2486 {
2487 $seen_libobjs = &handle_lib_objects ($xname, $xname . '_LDADD');
2488 }
2489 else
2490 {
2491 # User didn't define prog_LDADD override. So do it.
2492 &define_variable ($xname . '_LDADD', '$(LDADD)', $where);
2494 # This does a bit too much work. But we need it to
2495 # generate _DEPENDENCIES when appropriate.
2496 if (var ('LDADD'))
2497 {
2498 $seen_libobjs = &handle_lib_objects ($xname, 'LDADD');
2499 }
2500 }
2502 reject_var ($xname . '_LIBADD',
2503 "use `${xname}_LDADD', not `${xname}_LIBADD'");
2505 set_seen ($xname . '_DEPENDENCIES');
2506 set_seen ($xname . '_LDFLAGS');
2508 # Determine program to use for link.
2509 my $xlink = &define_per_target_linker_variable ($linker, $xname);
2511 # If the resulting program lies into a subdirectory,
2512 # make sure this directory will exist.
2513 my $dirstamp = require_build_directory_maybe ($one_file);
2515 $libtool_clean_directories{dirname ($one_file)} = 1;
2517 $output_rules .= &file_contents ('program',
2518 $where,
2519 PROGRAM => $one_file,
2520 XPROGRAM => $xname,
2521 XLINK => $xlink,
2522 DIRSTAMP => $dirstamp,
2523 EXEEXT => '$(EXEEXT)');
2525 if ($seen_libobjs || $seen_global_libobjs)
2526 {
2527 if (var ($xname . '_LDADD'))
2528 {
2529 &check_libobjs_sources ($xname, $xname . '_LDADD');
2530 }
2531 elsif (var ('LDADD'))
2532 {
2533 &check_libobjs_sources ($xname, 'LDADD');
2534 }
2535 }
2536 }
2537 }
2540 # handle_libraries ()
2541 # -------------------
2542 # Handle libraries.
2543 sub handle_libraries
2544 {
2545 my @liblist = &am_install_var ('libs', 'LIBRARIES',
2546 'lib', 'pkglib', 'noinst', 'check');
2547 return if ! @liblist;
2549 my @prefix = am_primary_prefixes ('LIBRARIES', 0, 'lib', 'pkglib',
2550 'noinst', 'check');
2552 if (@prefix)
2553 {
2554 my $var = rvar ($prefix[0] . '_LIBRARIES');
2555 $var->requires_variables ('library used', 'RANLIB');
2556 }
2558 &define_variable ('AR', 'ar', INTERNAL);
2559 &define_variable ('ARFLAGS', 'cru', INTERNAL);
2561 foreach my $pair (@liblist)
2562 {
2563 my ($where, $onelib) = @$pair;
2565 my $seen_libobjs = 0;
2566 # Check that the library fits the standard naming convention.
2567 my $bn = basename ($onelib);
2568 if ($bn !~ /^lib.*\.a$/)
2569 {
2570 $bn =~ s/^(?:lib)?(.*?)(?:\.[^.]*)?$/lib$1.a/;
2571 my $suggestion = dirname ($onelib) . "/$bn";
2572 $suggestion =~ s|^\./||g;
2573 msg ('error-gnu/warn', $where,
2574 "`$onelib' is not a standard library name\n"
2575 . "did you mean `$suggestion'?")
2576 }
2578 $where->push_context ("while processing library `$onelib'");
2579 $where->set (INTERNAL->get);
2581 my $obj = get_object_extension '.$(OBJEXT)';
2583 # Canonicalize names and check for misspellings.
2584 my $xlib = &check_canonical_spelling ($onelib, '_LIBADD', '_SOURCES',
2585 '_OBJECTS', '_DEPENDENCIES',
2586 '_AR');
2588 if (! var ($xlib . '_AR'))
2589 {
2590 &define_variable ($xlib . '_AR', '$(AR) $(ARFLAGS)', $where);
2591 }
2593 # Generate support for conditional object inclusion in
2594 # libraries.
2595 if (var ($xlib . '_LIBADD'))
2596 {
2597 if (&handle_lib_objects ($xlib, $xlib . '_LIBADD'))
2598 {
2599 $seen_libobjs = 1;
2600 }
2601 }
2602 else
2603 {
2604 &define_variable ($xlib . "_LIBADD", '', $where);
2605 }
2607 reject_var ($xlib . '_LDADD',
2608 "use `${xlib}_LIBADD', not `${xlib}_LDADD'");
2610 # Make sure we at look at this.
2611 set_seen ($xlib . '_DEPENDENCIES');
2613 &handle_source_transform ($xlib, $onelib, $obj, $where,
2614 NONLIBTOOL => 1, LIBTOOL => 0);
2616 # If the resulting library lies into a subdirectory,
2617 # make sure this directory will exist.
2618 my $dirstamp = require_build_directory_maybe ($onelib);
2620 $output_rules .= &file_contents ('library',
2621 $where,
2622 LIBRARY => $onelib,
2623 XLIBRARY => $xlib,
2624 DIRSTAMP => $dirstamp);
2626 if ($seen_libobjs)
2627 {
2628 if (var ($xlib . '_LIBADD'))
2629 {
2630 &check_libobjs_sources ($xlib, $xlib . '_LIBADD');
2631 }
2632 }
2633 }
2634 }
2637 # handle_ltlibraries ()
2638 # ---------------------
2639 # Handle shared libraries.
2640 sub handle_ltlibraries
2641 {
2642 my @liblist = &am_install_var ('ltlib', 'LTLIBRARIES',
2643 'noinst', 'lib', 'pkglib', 'check');
2644 return if ! @liblist;
2646 my @prefix = am_primary_prefixes ('LTLIBRARIES', 0, 'lib', 'pkglib',
2647 'noinst', 'check');
2649 if (@prefix)
2650 {
2651 my $var = rvar ($prefix[0] . '_LTLIBRARIES');
2652 $var->requires_variables ('Libtool library used', 'LIBTOOL');
2653 }
2655 my %instdirs = ();
2656 my %instsubdirs = ();
2657 my %instconds = ();
2658 my %liblocations = (); # Location (in Makefile.am) of each library.
2660 foreach my $key (@prefix)
2661 {
2662 # Get the installation directory of each library.
2663 my $dir = $key;
2664 my $strip_subdir = 1;
2665 if ($dir =~ /^nobase_/)
2666 {
2667 $dir =~ s/^nobase_//;
2668 $strip_subdir = 0;
2669 }
2670 my $var = rvar ($key . '_LTLIBRARIES');
2672 # We reject libraries which are installed in several places
2673 # in the same condition, because we can only specify one
2674 # `-rpath' option.
2675 $var->traverse_recursively
2676 (sub
2677 {
2678 my ($var, $val, $cond, $full_cond) = @_;
2679 my $hcond = $full_cond->human;
2680 my $where = $var->rdef ($cond)->location;
2681 my $ldir = '';
2682 $ldir = '/' . dirname ($val)
2683 if (!$strip_subdir);
2684 # A library cannot be installed in different directory
2685 # in overlapping conditions.
2686 if (exists $instconds{$val})
2687 {
2688 my ($msg, $acond) =
2689 $instconds{$val}->ambiguous_p ($val, $full_cond);
2691 if ($msg)
2692 {
2693 error ($where, $msg, partial => 1);
2694 my $dirtxt = "installed " . ($strip_subdir ? "in" : "below") . " `$dir'";
2695 $dirtxt = "built for `$dir'"
2696 if $dir eq 'EXTRA' || $dir eq 'noinst' || $dir eq 'check';
2697 my $dircond =
2698 $full_cond->true ? "" : " in condition $hcond";
2700 error ($where, "`$val' should be $dirtxt$dircond ...",
2701 partial => 1);
2703 my $hacond = $acond->human;
2704 my $adir = $instdirs{$val}{$acond};
2705 my $adirtxt = "installed in `$adir'";
2706 $adirtxt = "built for `$adir'"
2707 if ($adir eq 'EXTRA' || $adir eq 'noinst'
2708 || $adir eq 'check');
2709 my $adircond = $acond->true ? "" : " in condition $hacond";
2711 my $onlyone = ($dir ne $adir) ?
2712 ("\nLibtool libraries can be built for only one "
2713 . "destination.") : "";
2715 error ($liblocations{$val}{$acond},
2716 "... and should also be $adirtxt$adircond.$onlyone");
2717 return;
2718 }
2719 }
2720 else
2721 {
2722 $instconds{$val} = new Automake::DisjConditions;
2723 }
2724 $instdirs{$val}{$full_cond} = $dir;
2725 $instsubdirs{$val}{$full_cond} = $ldir;
2726 $liblocations{$val}{$full_cond} = $where;
2727 $instconds{$val} = $instconds{$val}->merge ($full_cond);
2728 },
2729 sub
2730 {
2731 return ();
2732 },
2733 skip_ac_subst => 1);
2734 }
2736 foreach my $pair (@liblist)
2737 {
2738 my ($where, $onelib) = @$pair;
2740 my $seen_libobjs = 0;
2741 my $obj = get_object_extension '.lo';
2743 # Canonicalize names and check for misspellings.
2744 my $xlib = &check_canonical_spelling ($onelib, '_LIBADD', '_LDFLAGS',
2745 '_SOURCES', '_OBJECTS',
2746 '_DEPENDENCIES');
2748 # Check that the library fits the standard naming convention.
2749 my $libname_rx = '^lib.*\.la';
2750 my $ldvar = var ("${xlib}_LDFLAGS") || var ('AM_LDFLAGS');
2751 my $ldvar2 = var ('LDFLAGS');
2752 if (($ldvar && grep (/-module/, $ldvar->value_as_list_recursive))
2753 || ($ldvar2 && grep (/-module/, $ldvar2->value_as_list_recursive)))
2754 {
2755 # Relax name checking for libtool modules.
2756 $libname_rx = '\.la';
2757 }
2759 my $bn = basename ($onelib);
2760 if ($bn !~ /$libname_rx$/)
2761 {
2762 my $type = 'library';
2763 if ($libname_rx eq '\.la')
2764 {
2765 $bn =~ s/^(lib|)(.*?)(?:\.[^.]*)?$/$1$2.la/;
2766 $type = 'module';
2767 }
2768 else
2769 {
2770 $bn =~ s/^(?:lib)?(.*?)(?:\.[^.]*)?$/lib$1.la/;
2771 }
2772 my $suggestion = dirname ($onelib) . "/$bn";
2773 $suggestion =~ s|^\./||g;
2774 msg ('error-gnu/warn', $where,
2775 "`$onelib' is not a standard libtool $type name\n"
2776 . "did you mean `$suggestion'?")
2777 }
2779 $where->push_context ("while processing Libtool library `$onelib'");
2780 $where->set (INTERNAL->get);
2782 # Make sure we look at these.
2783 set_seen ($xlib . '_LDFLAGS');
2784 set_seen ($xlib . '_DEPENDENCIES');
2786 # Generate support for conditional object inclusion in
2787 # libraries.
2788 if (var ($xlib . '_LIBADD'))
2789 {
2790 if (&handle_lib_objects ($xlib, $xlib . '_LIBADD'))
2791 {
2792 $seen_libobjs = 1;
2793 }
2794 }
2795 else
2796 {
2797 &define_variable ($xlib . "_LIBADD", '', $where);
2798 }
2800 reject_var ("${xlib}_LDADD",
2801 "use `${xlib}_LIBADD', not `${xlib}_LDADD'");
2804 my $linker = &handle_source_transform ($xlib, $onelib, $obj, $where,
2805 NONLIBTOOL => 0, LIBTOOL => 1);
2807 # Determine program to use for link.
2808 my $xlink = &define_per_target_linker_variable ($linker, $xlib);
2810 my $rpathvar = "am_${xlib}_rpath";
2811 my $rpath = "\$($rpathvar)";
2812 foreach my $rcond ($instconds{$onelib}->conds)
2813 {
2814 my $val;
2815 if ($instdirs{$onelib}{$rcond} eq 'EXTRA'
2816 || $instdirs{$onelib}{$rcond} eq 'noinst'
2817 || $instdirs{$onelib}{$rcond} eq 'check')
2818 {
2819 # It's an EXTRA_ library, so we can't specify -rpath,
2820 # because we don't know where the library will end up.
2821 # The user probably knows, but generally speaking automake
2822 # doesn't -- and in fact configure could decide
2823 # dynamically between two different locations.
2824 $val = '';
2825 }
2826 else
2827 {
2828 $val = ('-rpath $(' . $instdirs{$onelib}{$rcond} . 'dir)');
2829 $val .= $instsubdirs{$onelib}{$rcond}
2830 if defined $instsubdirs{$onelib}{$rcond};
2831 }
2832 if ($rcond->true)
2833 {
2834 # If $rcond is true there is only one condition and
2835 # there is no point defining an helper variable.
2836 $rpath = $val;
2837 }
2838 else
2839 {
2840 define_pretty_variable ($rpathvar, $rcond, INTERNAL, $val);
2841 }
2842 }
2844 # If the resulting library lies into a subdirectory,
2845 # make sure this directory will exist.
2846 my $dirstamp = require_build_directory_maybe ($onelib);
2848 # Remember to cleanup .libs/ in this directory.
2849 my $dirname = dirname $onelib;
2850 $libtool_clean_directories{$dirname} = 1;
2852 $output_rules .= &file_contents ('ltlibrary',
2853 $where,
2854 LTLIBRARY => $onelib,
2855 XLTLIBRARY => $xlib,
2856 RPATH => $rpath,
2857 XLINK => $xlink,
2858 DIRSTAMP => $dirstamp);
2859 if ($seen_libobjs)
2860 {
2861 if (var ($xlib . '_LIBADD'))
2862 {
2863 &check_libobjs_sources ($xlib, $xlib . '_LIBADD');
2864 }
2865 }
2866 }
2867 }
2869 # See if any _SOURCES variable were misspelled.
2870 sub check_typos ()
2871 {
2872 # It is ok if the user sets this particular variable.
2873 set_seen 'AM_LDFLAGS';
2875 foreach my $primary ('SOURCES', 'LIBADD', 'LDADD', 'LDFLAGS', 'DEPENDENCIES')
2876 {
2877 foreach my $var (variables $primary)
2878 {
2879 my $varname = $var->name;
2880 # A configure variable is always legitimate.
2881 next if exists $configure_vars{$varname};
2883 for my $cond ($var->conditions->conds)
2884 {
2885 $varname =~ /^(?:nobase_)?(?:dist_|nodist_)?(.*)_[[:alnum:]]+$/;
2886 msg_var ('syntax', $var, "variable `$varname' is defined but no"
2887 . " program or\nlibrary has `$1' as canonic name"
2888 . " (possible typo)")
2889 unless $var->rdef ($cond)->seen;
2890 }
2891 }
2892 }
2893 }
2896 # Handle scripts.
2897 sub handle_scripts
2898 {
2899 # NOTE we no longer automatically clean SCRIPTS, because it is
2900 # useful to sometimes distribute scripts verbatim. This happens
2901 # e.g. in Automake itself.
2902 &am_install_var ('-candist', 'scripts', 'SCRIPTS',
2903 'bin', 'sbin', 'libexec', 'pkgdata',
2904 'noinst', 'check');
2905 }
2910 ## ------------------------ ##
2911 ## Handling Texinfo files. ##
2912 ## ------------------------ ##
2914 # ($OUTFILE, $VFILE, @CLEAN_FILES)
2915 # &scan_texinfo_file ($FILENAME)
2916 # ------------------------------
2917 # $OUTFILE - name of the info file produced by $FILENAME.
2918 # $VFILE - name of the version.texi file used (undef if none).
2919 # @CLEAN_FILES - list of byproducts (indexes etc.)
2920 sub scan_texinfo_file ($)
2921 {
2922 my ($filename) = @_;
2924 # Some of the following extensions are always created, no matter
2925 # whether indexes are used or not. Other (like cps, fns, ... pgs)
2926 # are only created when they are used. We used to scan $FILENAME
2927 # for their use, but that is not enough: they could be used in
2928 # included files. We can't scan included files because we don't
2929 # know the include path. Therefore we always erase these files, no
2930 # matter whether they are used or not.
2931 #
2932 # (tmp is only created if an @macro is used and a certain e-TeX
2933 # feature is not available.)
2934 my %clean_suffixes =
2935 map { $_ => 1 } (qw(aux log toc tmp
2936 cp cps
2937 fn fns
2938 ky kys
2939 vr vrs
2940 tp tps
2941 pg pgs)); # grep 'new.*index' texinfo.tex
2943 my $texi = new Automake::XFile "< $filename";
2944 verb "reading $filename";
2946 my ($outfile, $vfile);
2947 while ($_ = $texi->getline)
2948 {
2949 if (/^\@setfilename +(\S+)/)
2950 {
2951 # Honor only the first @setfilename. (It's possible to have
2952 # more occurrences later if the manual shows examples of how
2953 # to use @setfilename...)
2954 next if $outfile;
2956 $outfile = $1;
2957 if ($outfile =~ /\.([^.]+)$/ && $1 ne 'info')
2958 {
2959 error ("$filename:$.",
2960 "output `$outfile' has unrecognized extension");
2961 return;
2962 }
2963 }
2964 # A "version.texi" file is actually any file whose name matches
2965 # "vers*.texi".
2966 elsif (/^\@include\s+(vers[^.]*\.texi)\s*$/)
2967 {
2968 $vfile = $1;
2969 }
2971 # Try to find new or unused indexes.
2973 # Creating a new category of index.
2974 elsif (/^\@def(code)?index (\w+)/)
2975 {
2976 $clean_suffixes{$2} = 1;
2977 $clean_suffixes{"$2s"} = 1;
2978 }
2980 # Merging an index into an another.
2981 elsif (/^\@syn(code)?index (\w+) (\w+)/)
2982 {
2983 delete $clean_suffixes{"$2s"};
2984 $clean_suffixes{"$3s"} = 1;
2985 }
2987 }
2989 if (! $outfile)
2990 {
2991 err_am "`$filename' missing \@setfilename";
2992 return;
2993 }
2995 my $infobase = basename ($filename);
2996 $infobase =~ s/\.te?xi(nfo)?$//;
2997 return ($outfile, $vfile,
2998 map { "$infobase.$_" } (sort keys %clean_suffixes));
2999 }
3002 # ($DIRSTAMP, @CLEAN_FILES)
3003 # output_texinfo_build_rules ($SOURCE, $DEST, $INSRC, @DEPENDENCIES)
3004 # ------------------------------------------------------------------
3005 # SOURCE - the source Texinfo file
3006 # DEST - the destination Info file
3007 # INSRC - wether DEST should be built in the source tree
3008 # DEPENDENCIES - known dependencies
3009 sub output_texinfo_build_rules ($$$@)
3010 {
3011 my ($source, $dest, $insrc, @deps) = @_;
3013 # Split `a.texi' into `a' and `.texi'.
3014 my ($spfx, $ssfx) = ($source =~ /^(.*?)(\.[^.]*)?$/);
3015 my ($dpfx, $dsfx) = ($dest =~ /^(.*?)(\.[^.]*)?$/);
3017 $ssfx ||= "";
3018 $dsfx ||= "";
3020 # We can output two kinds of rules: the "generic" rules use Make
3021 # suffix rules and are appropriate when $source and $dest do not lie
3022 # in a sub-directory; the "specific" rules are needed in the other
3023 # case.
3024 #
3025 # The former are output only once (this is not really apparent here,
3026 # but just remember that some logic deeper in Automake will not
3027 # output the same rule twice); while the later need to be output for
3028 # each Texinfo source.
3029 my $generic;
3030 my $makeinfoflags;
3031 my $sdir = dirname $source;
3032 if ($sdir eq '.' && dirname ($dest) eq '.')
3033 {
3034 $generic = 1;
3035 $makeinfoflags = '-I $(srcdir)';
3036 }
3037 else
3038 {
3039 $generic = 0;
3040 $makeinfoflags = "-I $sdir -I \$(srcdir)/$sdir";
3041 }
3043 # A directory can contain two kinds of info files: some built in the
3044 # source tree, and some built in the build tree. The rules are
3045 # different in each case. However we cannot output two different
3046 # set of generic rules. Because in-source builds are more usual, we
3047 # use generic rules in this case and fall back to "specific" rules
3048 # for build-dir builds. (It should not be a problem to invert this
3049 # if needed.)
3050 $generic = 0 unless $insrc;
3052 # We cannot use a suffix rule to build info files with an empty
3053 # extension. Otherwise we would output a single suffix inference
3054 # rule, with separate dependencies, as in
3055 #
3056 # .texi:
3057 # $(MAKEINFO) ...
3058 # foo.info: foo.texi
3059 #
3060 # which confuse Solaris make. (See the Autoconf manual for
3061 # details.) Therefore we use a specific rule in this case. This
3062 # applies to info files only (dvi and pdf files always have an
3063 # extension).
3064 my $generic_info = ($generic && $dsfx) ? 1 : 0;
3066 # If the resulting file lie into a subdirectory,
3067 # make sure this directory will exist.
3068 my $dirstamp = require_build_directory_maybe ($dest);
3070 my $dipfx = ($insrc ? '$(srcdir)/' : '') . $dpfx;
3072 $output_rules .= file_contents ('texibuild',
3073 new Automake::Location,
3074 DEPS => "@deps",
3075 DEST_PREFIX => $dpfx,
3076 DEST_INFO_PREFIX => $dipfx,
3077 DEST_SUFFIX => $dsfx,
3078 DIRSTAMP => $dirstamp,
3079 GENERIC => $generic,
3080 GENERIC_INFO => $generic_info,
3081 INSRC => $insrc,
3082 MAKEINFOFLAGS => $makeinfoflags,
3083 SOURCE => ($generic
3084 ? '$<' : $source),
3085 SOURCE_INFO => ($generic_info
3086 ? '$<' : $source),
3087 SOURCE_REAL => $source,
3088 SOURCE_SUFFIX => $ssfx,
3089 );
3090 return ($dirstamp, "$dpfx.dvi", "$dpfx.pdf", "$dpfx.ps", "$dpfx.html");
3091 }
3094 # $TEXICLEANS
3095 # handle_texinfo_helper ($info_texinfos)
3096 # --------------------------------------
3097 # Handle all Texinfo source; helper for handle_texinfo.
3098 sub handle_texinfo_helper ($)
3099 {
3100 my ($info_texinfos) = @_;
3101 my (@infobase, @info_deps_list, @texi_deps);
3102 my %versions;
3103 my $done = 0;
3104 my @texi_cleans;
3106 # Build a regex matching user-cleaned files.
3107 my $d = var 'DISTCLEANFILES';
3108 my $c = var 'CLEANFILES';
3109 my @f = ();
3110 push @f, $d->value_as_list_recursive (inner_expand => 1) if $d;
3111 push @f, $c->value_as_list_recursive (inner_expand => 1) if $c;
3112 @f = map { s|[^A-Za-z_0-9*\[\]\-]|\\$&|g; s|\*|[^/]*|g; $_; } @f;
3113 my $user_cleaned_files = '^(?:' . join ('|', @f) . ')$';
3115 foreach my $texi
3116 ($info_texinfos->value_as_list_recursive (inner_expand => 1))
3117 {
3118 my $infobase = $texi;
3119 $infobase =~ s/\.(txi|texinfo|texi)$//;
3121 if ($infobase eq $texi)
3122 {
3123 # FIXME: report line number.
3124 err_am "texinfo file `$texi' has unrecognized extension";
3125 next;
3126 }
3128 push @infobase, $infobase;
3130 # If 'version.texi' is referenced by input file, then include
3131 # automatic versioning capability.
3132 my ($out_file, $vtexi, @clean_files) =
3133 scan_texinfo_file ("$relative_dir/$texi")
3134 or next;
3135 push (@texi_cleans, @clean_files);
3137 # If the Texinfo source is in a subdirectory, create the
3138 # resulting info in this subdirectory. If it is in the current
3139 # directory, try hard to not prefix "./" because it breaks the
3140 # generic rules.
3141 my $outdir = dirname ($texi) . '/';
3142 $outdir = "" if $outdir eq './';
3143 $out_file = $outdir . $out_file;
3145 # Until Automake 1.6.3, .info files were built in the
3146 # source tree. This was an obstacle to the support of
3147 # non-distributed .info files, and non-distributed .texi
3148 # files.
3149 #
3150 # * Non-distributed .texi files is important in some packages
3151 # where .texi files are built at make time, probably using
3152 # other binaries built in the package itself, maybe using
3153 # tools or information found on the build host. Because
3154 # these files are not distributed they are always rebuilt
3155 # at make time; they should therefore not lie in the source
3156 # directory. One plan was to support this using
3157 # nodist_info_TEXINFOS or something similar. (Doing this
3158 # requires some sanity checks. For instance Automake should
3159 # not allow:
3160 # dist_info_TEXINFOS = foo.texi
3161 # nodist_foo_TEXINFOS = included.texi
3162 # because a distributed file should never depend on a
3163 # non-distributed file.)
3164 #
3165 # * If .texi files are not distributed, then .info files should
3166 # not be distributed either. There are also cases where one
3167 # wants to distribute .texi files, but does not want to
3168 # distribute the .info files. For instance the Texinfo package
3169 # distributes the tool used to build these files; it would
3170 # be a waste of space to distribute them. It's not clear
3171 # which syntax we should use to indicate that .info files should
3172 # not be distributed. Akim Demaille suggested that eventually
3173 # we switch to a new syntax:
3174 # | Maybe we should take some inspiration from what's already
3175 # | done in the rest of Automake. Maybe there is too much
3176 # | syntactic sugar here, and you want
3177 # | nodist_INFO = bar.info
3178 # | dist_bar_info_SOURCES = bar.texi
3179 # | bar_texi_DEPENDENCIES = foo.texi
3180 # | with a bit of magic to have bar.info represent the whole
3181 # | bar*info set. That's a lot more verbose that the current
3182 # | situation, but it is # not new, hence the user has less
3183 # | to learn.
3184 # |
3185 # | But there is still too much room for meaningless specs:
3186 # | nodist_INFO = bar.info
3187 # | dist_bar_info_SOURCES = bar.texi
3188 # | dist_PS = bar.ps something-written-by-hand.ps
3189 # | nodist_bar_ps_SOURCES = bar.texi
3190 # | bar_texi_DEPENDENCIES = foo.texi
3191 # | here bar.texi is dist_ in line 2, and nodist_ in 4.
3192 #
3193 # Back to the point, it should be clear that in order to support
3194 # non-distributed .info files, we need to build them in the
3195 # build tree, not in the source tree (non-distributed .texi
3196 # files are less of a problem, because we do not output build
3197 # rules for them). In Automake 1.7 .info build rules have been
3198 # largely cleaned up so that .info files get always build in the
3199 # build tree, even when distributed. The idea was that
3200 # (1) if during a VPATH build the .info file was found to be
3201 # absent or out-of-date (in the source tree or in the
3202 # build tree), Make would rebuild it in the build tree.
3203 # If an up-to-date source-tree of the .info file existed,
3204 # make would not rebuild it in the build tree.
3205 # (2) having two copies of .info files, one in the source tree
3206 # and one (newer) in the build tree is not a problem
3207 # because `make dist' always pick files in the build tree
3208 # first.
3209 # However it turned out the be a bad idea for several reasons:
3210 # * Tru64, OpenBSD, and FreeBSD (not NetBSD) Make do not behave
3211 # like GNU Make on point (1) above. These implementations
3212 # of Make would always rebuild .info files in the build
3213 # tree, even if such files were up to date in the source
3214 # tree. Consequently, it was impossible to perform a VPATH
3215 # build of a package containing Texinfo files using these
3216 # Make implementations.
3217 # (Refer to the Autoconf Manual, section "Limitation of
3218 # Make", paragraph "VPATH", item "target lookup", for
3219 # an account of the differences between these
3220 # implementations.)
3221 # * The GNU Coding Standards require these files to be built
3222 # in the source-tree (when they are distributed, that is).
3223 # * Keeping a fresher copy of distributed files in the
3224 # build tree can be annoying during development because
3225 # - if the files is kept under CVS, you really want it
3226 # to be updated in the source tree
3227 # - it is confusing that `make distclean' does not erase
3228 # all files in the build tree.
3229 #
3230 # Consequently, starting with Automake 1.8, .info files are
3231 # built in the source tree again. Because we still plan to
3232 # support non-distributed .info files at some point, we
3233 # have a single variable ($INSRC) that controls whether
3234 # the current .info file must be built in the source tree
3235 # or in the build tree. Actually this variable is switched
3236 # off for .info files that appear to be cleaned; this is
3237 # for backward compatibility with package such as Texinfo,
3238 # which do things like
3239 # info_TEXINFOS = texinfo.txi info-stnd.texi info.texi
3240 # DISTCLEANFILES = texinfo texinfo-* info*.info*
3241 # # Do not create info files for distribution.
3242 # dist-info:
3243 # in order not to distribute .info files.
3244 my $insrc = ($out_file =~ $user_cleaned_files) ? 0 : 1;
3246 my $soutdir = '$(srcdir)/' . $outdir;
3247 $outdir = $soutdir if $insrc;
3249 # If user specified file_TEXINFOS, then use that as explicit
3250 # dependency list.
3251 @texi_deps = ();
3252 push (@texi_deps, "$soutdir$vtexi") if $vtexi;
3254 my $canonical = canonicalize ($infobase);
3255 if (var ($canonical . "_TEXINFOS"))
3256 {
3257 push (@texi_deps, '$(' . $canonical . '_TEXINFOS)');
3258 push_dist_common ('$(' . $canonical . '_TEXINFOS)');
3259 }
3261 my ($dirstamp, @cfiles) =
3262 output_texinfo_build_rules ($texi, $out_file, $insrc, @texi_deps);
3263 push (@texi_cleans, @cfiles);
3265 push (@info_deps_list, $out_file);
3267 # If a vers*.texi file is needed, emit the rule.
3268 if ($vtexi)
3269 {
3270 err_am ("`$vtexi', included in `$texi', "
3271 . "also included in `$versions{$vtexi}'")
3272 if defined $versions{$vtexi};
3273 $versions{$vtexi} = $texi;
3275 # We number the stamp-vti files. This is doable since the
3276 # actual names don't matter much. We only number starting
3277 # with the second one, so that the common case looks nice.
3278 my $vti = ($done ? $done : 'vti');
3279 ++$done;
3281 # This is ugly, but it is our historical practice.
3282 if ($config_aux_dir_set_in_configure_ac)
3283 {
3284 require_conf_file_with_macro (TRUE, 'info_TEXINFOS', FOREIGN,
3285 'mdate-sh');
3286 }
3287 else
3288 {
3289 require_file_with_macro (TRUE, 'info_TEXINFOS',
3290 FOREIGN, 'mdate-sh');
3291 }
3293 my $conf_dir;
3294 if ($config_aux_dir_set_in_configure_ac)
3295 {
3296 $conf_dir = "$am_config_aux_dir/";
3297 }
3298 else
3299 {
3300 $conf_dir = '$(srcdir)/';
3301 }
3302 $output_rules .= file_contents ('texi-vers',
3303 new Automake::Location,
3304 TEXI => $texi,
3305 VTI => $vti,
3306 STAMPVTI => "${soutdir}stamp-$vti",
3307 VTEXI => "$soutdir$vtexi",
3308 MDDIR => $conf_dir,
3309 DIRSTAMP => $dirstamp);
3310 }
3311 }
3313 # Handle location of texinfo.tex.
3314 my $need_texi_file = 0;
3315 my $texinfodir;
3316 if (var ('TEXINFO_TEX'))
3317 {
3318 # The user defined TEXINFO_TEX so assume he knows what he is
3319 # doing.
3320 $texinfodir = ('$(srcdir)/'
3321 . dirname (variable_value ('TEXINFO_TEX')));
3322 }
3323 elsif (option 'cygnus')
3324 {
3325 $texinfodir = '$(top_srcdir)/../texinfo';
3326 define_variable ('TEXINFO_TEX', "$texinfodir/texinfo.tex", INTERNAL);
3327 }
3328 elsif ($config_aux_dir_set_in_configure_ac)
3329 {
3330 $texinfodir = $am_config_aux_dir;
3331 define_variable ('TEXINFO_TEX', "$texinfodir/texinfo.tex", INTERNAL);
3332 $need_texi_file = 2; # so that we require_conf_file later
3333 }
3334 else
3335 {
3336 $texinfodir = '$(srcdir)';
3337 $need_texi_file = 1;
3338 }
3339 define_variable ('am__TEXINFO_TEX_DIR', $texinfodir, INTERNAL);
3341 push (@dist_targets, 'dist-info');
3343 if (! option 'no-installinfo')
3344 {
3345 # Make sure documentation is made and installed first. Use
3346 # $(INFO_DEPS), not 'info', because otherwise recursive makes
3347 # get run twice during "make all".
3348 unshift (@all, '$(INFO_DEPS)');
3349 }
3351 define_files_variable ("DVIS", @infobase, 'dvi', INTERNAL);
3352 define_files_variable ("PDFS", @infobase, 'pdf', INTERNAL);
3353 define_files_variable ("PSS", @infobase, 'ps', INTERNAL);
3354 define_files_variable ("HTMLS", @infobase, 'html', INTERNAL);
3356 # This next isn't strictly needed now -- the places that look here
3357 # could easily be changed to look in info_TEXINFOS. But this is
3358 # probably better, in case noinst_TEXINFOS is ever supported.
3359 define_variable ("TEXINFOS", variable_value ('info_TEXINFOS'), INTERNAL);
3361 # Do some error checking. Note that this file is not required
3362 # when in Cygnus mode; instead we defined TEXINFO_TEX explicitly
3363 # up above.
3364 if ($need_texi_file && ! option 'no-texinfo.tex')
3365 {
3366 if ($need_texi_file > 1)
3367 {
3368 require_conf_file_with_macro (TRUE, 'info_TEXINFOS', FOREIGN,
3369 'texinfo.tex');
3370 }
3371 else
3372 {
3373 require_file_with_macro (TRUE, 'info_TEXINFOS', FOREIGN,
3374 'texinfo.tex');
3375 }
3376 }
3378 return makefile_wrap ("", "\t ", @texi_cleans);
3379 }
3382 # handle_texinfo ()
3383 # -----------------
3384 # Handle all Texinfo source.
3385 sub handle_texinfo ()
3386 {
3387 reject_var 'TEXINFOS', "`TEXINFOS' is an anachronism; use `info_TEXINFOS'";
3388 # FIXME: I think this is an obsolete future feature name.
3389 reject_var 'html_TEXINFOS', "HTML generation not yet supported";
3391 my $info_texinfos = var ('info_TEXINFOS');
3392 my $texiclean = "";
3393 if ($info_texinfos)
3394 {
3395 $texiclean = handle_texinfo_helper ($info_texinfos);
3396 }
3397 $output_rules .= file_contents ('texinfos',
3398 new Automake::Location,
3399 TEXICLEAN => $texiclean,
3400 'LOCAL-TEXIS' => !!$info_texinfos);
3401 }
3404 # Handle any man pages.
3405 sub handle_man_pages
3406 {
3407 reject_var 'MANS', "`MANS' is an anachronism; use `man_MANS'";
3409 # Find all the sections in use. We do this by first looking for
3410 # "standard" sections, and then looking for any additional
3411 # sections used in man_MANS.
3412 my (%sections, %notrans_sections, %trans_sections,
3413 %notrans_vars, %trans_vars, %notrans_sect_vars, %trans_sect_vars);
3414 # We handle nodist_ for uniformity. man pages aren't distributed
3415 # by default so it isn't actually very important.
3416 foreach my $npfx ('', 'notrans_')
3417 {
3418 foreach my $pfx ('', 'dist_', 'nodist_')
3419 {
3420 # Add more sections as needed.
3421 foreach my $section ('0'..'9', 'n', 'l')
3422 {
3423 my $varname = $npfx . $pfx . 'man' . $section . '_MANS';
3424 if (var ($varname))
3425 {
3426 $sections{$section} = 1;
3427 $varname = '$(' . $varname . ')';
3428 if ($npfx eq 'notrans_')
3429 {
3430 $notrans_sections{$section} = 1;
3431 $notrans_sect_vars{$varname} = 1;
3432 }
3433 else
3434 {
3435 $trans_sections{$section} = 1;
3436 $trans_sect_vars{$varname} = 1;
3437 }
3439 &push_dist_common ($varname)
3440 if $pfx eq 'dist_';
3441 }
3442 }
3444 my $varname = $npfx . $pfx . 'man_MANS';
3445 my $var = var ($varname);
3446 if ($var)
3447 {
3448 foreach ($var->value_as_list_recursive)
3449 {
3450 # A page like `foo.1c' goes into man1dir.
3451 if (/\.([0-9a-z])([a-z]*)$/)
3452 {
3453 $sections{$1} = 1;
3454 if ($npfx eq 'notrans_')
3455 {
3456 $notrans_sections{$1} = 1;
3457 }
3458 else
3459 {
3460 $trans_sections{$1} = 1;
3461 }
3462 }
3463 }
3465 $varname = '$(' . $varname . ')';
3466 if ($npfx eq 'notrans_')
3467 {
3468 $notrans_vars{$varname} = 1;
3469 }
3470 else
3471 {
3472 $trans_vars{$varname} = 1;
3473 }
3474 &push_dist_common ($varname)
3475 if $pfx eq 'dist_';
3476 }
3477 }
3478 }
3480 return unless %sections;
3482 my @unsorted_deps;
3484 # Build section independent variables.
3485 my $have_notrans = %notrans_vars;
3486 my @notrans_list = sort keys %notrans_vars;
3487 my $have_trans = %trans_vars;
3488 my @trans_list = sort keys %trans_vars;
3490 # Now for each section, generate an install and uninstall rule.
3491 # Sort sections so output is deterministic.
3492 foreach my $section (sort keys %sections)
3493 {
3494 # Build section dependent variables.
3495 my $notrans_mans = $have_notrans || exists $notrans_sections{$section};
3496 my $trans_mans = $have_trans || exists $trans_sections{$section};
3497 my (%notrans_this_sect, %trans_this_sect);
3498 my $expr = 'man' . $section . '_MANS';
3499 foreach my $varname (keys %notrans_sect_vars)
3500 {
3501 if ($varname =~ /$expr/)
3502 {
3503 $notrans_this_sect{$varname} = 1;
3504 }
3505 }
3506 foreach my $varname (keys %trans_sect_vars)
3507 {
3508 if ($varname =~ /$expr/)
3509 {
3510 $trans_this_sect{$varname} = 1;
3511 }
3512 }
3513 my @notrans_sect_list = sort keys %notrans_this_sect;
3514 my @trans_sect_list = sort keys %trans_this_sect;
3515 @unsorted_deps = (keys %notrans_vars, keys %trans_vars,
3516 keys %notrans_this_sect, keys %trans_this_sect);
3517 my @deps = sort @unsorted_deps;
3518 $output_rules .= &file_contents ('mans',
3519 new Automake::Location,
3520 SECTION => $section,
3521 DEPS => "@deps",
3522 NOTRANS_MANS => $notrans_mans,
3523 NOTRANS_SECT_LIST => "@notrans_sect_list",
3524 HAVE_NOTRANS => $have_notrans,
3525 NOTRANS_LIST => "@notrans_list",
3526 TRANS_MANS => $trans_mans,
3527 TRANS_SECT_LIST => "@trans_sect_list",
3528 HAVE_TRANS => $have_trans,
3529 TRANS_LIST => "@trans_list");
3530 }
3532 @unsorted_deps = (keys %notrans_vars, keys %trans_vars,
3533 keys %notrans_sect_vars, keys %trans_sect_vars);
3534 my @mans = sort @unsorted_deps;
3535 $output_vars .= file_contents ('mans-vars',
3536 new Automake::Location,
3537 MANS => "@mans");
3539 push (@all, '$(MANS)')
3540 unless option 'no-installman';
3541 }
3543 # Handle DATA variables.
3544 sub handle_data
3545 {
3546 &am_install_var ('-noextra', '-candist', 'data', 'DATA',
3547 'data', 'dataroot', 'dvi', 'html', 'pdf', 'ps',
3548 'sysconf', 'sharedstate', 'localstate',
3549 'pkgdata', 'lisp', 'noinst', 'check');
3550 }
3552 # Handle TAGS.
3553 sub handle_tags
3554 {
3555 my @tag_deps = ();
3556 my @ctag_deps = ();
3557 if (var ('SUBDIRS'))
3558 {
3559 $output_rules .= ("tags-recursive:\n"
3560 . "\tlist=\'\$(SUBDIRS)\'; for subdir in \$\$list; do \\\n"
3561 # Never fail here if a subdir fails; it
3562 # isn't important.
3563 . "\t test \"\$\$subdir\" = . || (\$(am__cd) \$\$subdir"
3564 . " && \$(MAKE) \$(AM_MAKEFLAGS) tags); \\\n"
3565 . "\tdone\n");
3566 push (@tag_deps, 'tags-recursive');
3567 &depend ('.PHONY', 'tags-recursive');
3569 $output_rules .= ("ctags-recursive:\n"
3570 . "\tlist=\'\$(SUBDIRS)\'; for subdir in \$\$list; do \\\n"
3571 # Never fail here if a subdir fails; it
3572 # isn't important.
3573 . "\t test \"\$\$subdir\" = . || (\$(am__cd) \$\$subdir"
3574 . " && \$(MAKE) \$(AM_MAKEFLAGS) ctags); \\\n"
3575 . "\tdone\n");
3576 push (@ctag_deps, 'ctags-recursive');
3577 &depend ('.PHONY', 'ctags-recursive');
3578 }
3580 if (&saw_sources_p (1)
3581 || var ('ETAGS_ARGS')
3582 || @tag_deps)
3583 {
3584 my @config;
3585 foreach my $spec (@config_headers)
3586 {
3587 my ($out, @ins) = split_config_file_spec ($spec);
3588 foreach my $in (@ins)
3589 {
3590 # If the config header source is in this directory,
3591 # require it.
3592 push @config, basename ($in)
3593 if $relative_dir eq dirname ($in);
3594 }
3595 }
3596 $output_rules .= &file_contents ('tags',
3597 new Automake::Location,
3598 CONFIG => "@config",
3599 TAGSDIRS => "@tag_deps",
3600 CTAGSDIRS => "@ctag_deps");
3602 set_seen 'TAGS_DEPENDENCIES';
3603 }
3604 elsif (reject_var ('TAGS_DEPENDENCIES',
3605 "doesn't make sense to define `TAGS_DEPENDENCIES'"
3606 . "without\nsources or `ETAGS_ARGS'"))
3607 {
3608 }
3609 else
3610 {
3611 # Every Makefile must define some sort of TAGS rule.
3612 # Otherwise, it would be possible for a top-level "make TAGS"
3613 # to fail because some subdirectory failed.
3614 $output_rules .= "tags: TAGS\nTAGS:\n\n";
3615 # Ditto ctags.
3616 $output_rules .= "ctags: CTAGS\nCTAGS:\n\n";
3617 }
3618 }
3620 # Handle multilib support.
3621 sub handle_multilib
3622 {
3623 if ($seen_multilib && $relative_dir eq '.')
3624 {
3625 $output_rules .= &file_contents ('multilib', new Automake::Location);
3626 push (@all, 'all-multi');
3627 }
3628 }
3631 # user_phony_rule ($NAME)
3632 # -----------------------
3633 # Return false if rule $NAME does not exist. Otherwise,
3634 # declare it as phony, complete its definition (in case it is
3635 # conditional), and return its Automake::Rule instance.
3636 sub user_phony_rule ($)
3637 {
3638 my ($name) = @_;
3639 my $rule = rule $name;
3640 if ($rule)
3641 {
3642 depend ('.PHONY', $name);
3643 # Define $NAME in all condition where it is not already defined,
3644 # so that it is always OK to depend on $NAME.
3645 for my $c ($rule->not_always_defined_in_cond (TRUE)->conds)
3646 {
3647 Automake::Rule::define ($name, 'internal', RULE_AUTOMAKE,
3648 $c, INTERNAL);
3649 $output_rules .= $c->subst_string . "$name:\n";
3650 }
3651 }
3652 return $rule;
3653 }
3656 # $BOOLEAN
3657 # &for_dist_common ($A, $B)
3658 # -------------------------
3659 # Subroutine for &handle_dist: sort files to dist.
3660 #
3661 # We put README first because it then becomes easier to make a
3662 # Usenet-compliant shar file (in these, README must be first).
3663 #
3664 # FIXME: do more ordering of files here.
3665 sub for_dist_common
3666 {
3667 return 0
3668 if $a eq $b;
3669 return -1
3670 if $a eq 'README';
3671 return 1
3672 if $b eq 'README';
3673 return $a cmp $b;
3674 }
3676 # handle_dist
3677 # -----------
3678 # Handle 'dist' target.
3679 sub handle_dist ()
3680 {
3681 # Substitutions for distdir.am
3682 my %transform;
3684 # Define DIST_SUBDIRS. This must always be done, regardless of the
3685 # no-dist setting: target like `distclean' or `maintainer-clean' use it.
3686 my $subdirs = var ('SUBDIRS');
3687 if ($subdirs)
3688 {
3689 # If SUBDIRS is conditionally defined, then set DIST_SUBDIRS
3690 # to all possible directories, and use it. If DIST_SUBDIRS is
3691 # defined, just use it.
3693 # Note that we check DIST_SUBDIRS first on purpose, so that
3694 # we don't call has_conditional_contents for now reason.
3695 # (In the past one project used so many conditional subdirectories
3696 # that calling has_conditional_contents on SUBDIRS caused
3697 # automake to grow to 150Mb -- this should not happen with
3698 # the current implementation of has_conditional_contents,
3699 # but it's more efficient to avoid the call anyway.)
3700 if (var ('DIST_SUBDIRS'))
3701 {
3702 }
3703 elsif ($subdirs->has_conditional_contents)
3704 {
3705 define_pretty_variable
3706 ('DIST_SUBDIRS', TRUE, INTERNAL,
3707 uniq ($subdirs->value_as_list_recursive));
3708 }
3709 else
3710 {
3711 # We always define this because that is what `distclean'
3712 # wants.
3713 define_pretty_variable ('DIST_SUBDIRS', TRUE, INTERNAL,
3714 '$(SUBDIRS)');
3715 }
3716 }
3718 # The remaining definitions are only required when a dist target is used.
3719 return if option 'no-dist';
3721 # At least one of the archive formats must be enabled.
3722 if ($relative_dir eq '.')
3723 {
3724 my $archive_defined = option 'no-dist-gzip' ? 0 : 1;
3725 $archive_defined ||=
3726 grep { option "dist-$_" } qw(shar zip tarZ bzip2 lzma xz);
3727 error (option 'no-dist-gzip',
3728 "no-dist-gzip specified but no dist-* specified, "
3729 . "at least one archive format must be enabled")
3730 unless $archive_defined;
3731 }
3733 # Look for common files that should be included in distribution.
3734 # If the aux dir is set, and it does not have a Makefile.am, then
3735 # we check for these files there as well.
3736 my $check_aux = 0;
3737 if ($relative_dir eq '.'
3738 && $config_aux_dir_set_in_configure_ac)
3739 {
3740 if (! &is_make_dir ($config_aux_dir))
3741 {
3742 $check_aux = 1;
3743 }
3744 }
3745 foreach my $cfile (@common_files)
3746 {
3747 if (dir_has_case_matching_file ($relative_dir, $cfile)
3748 # The file might be absent, but if it can be built it's ok.
3749 || rule $cfile)
3750 {
3751 &push_dist_common ($cfile);
3752 }
3754 # Don't use `elsif' here because a file might meaningfully
3755 # appear in both directories.
3756 if ($check_aux && dir_has_case_matching_file ($config_aux_dir, $cfile))
3757 {
3758 &push_dist_common ("$config_aux_dir/$cfile")
3759 }
3760 }
3762 # We might copy elements from $configure_dist_common to
3763 # %dist_common if we think we need to. If the file appears in our
3764 # directory, we would have discovered it already, so we don't
3765 # check that. But if the file is in a subdir without a Makefile,
3766 # we want to distribute it here if we are doing `.'. Ugly!
3767 if ($relative_dir eq '.')
3768 {
3769 foreach my $file (split (' ' , $configure_dist_common))
3770 {
3771 push_dist_common ($file)
3772 unless is_make_dir (dirname ($file));
3773 }
3774 }
3776 # Files to distributed. Don't use ->value_as_list_recursive
3777 # as it recursively expands `$(dist_pkgdata_DATA)' etc.
3778 my @dist_common = split (' ', rvar ('DIST_COMMON')->variable_value);
3779 @dist_common = uniq (sort for_dist_common (@dist_common));
3780 variable_delete 'DIST_COMMON';
3781 define_pretty_variable ('DIST_COMMON', TRUE, INTERNAL, @dist_common);
3783 # Now that we've processed DIST_COMMON, disallow further attempts
3784 # to set it.
3785 $handle_dist_run = 1;
3787 # Scan EXTRA_DIST to see if we need to distribute anything from a
3788 # subdir. If so, add it to the list. I didn't want to do this
3789 # originally, but there were so many requests that I finally
3790 # relented.
3791 my $extra_dist = var ('EXTRA_DIST');
3793 $transform{'DISTCHECK-HOOK'} = !! rule 'distcheck-hook';
3794 $transform{'GETTEXT'} = $seen_gettext && !$seen_gettext_external;
3796 # If the target `dist-hook' exists, make sure it is run. This
3797 # allows users to do random weird things to the distribution
3798 # before it is packaged up.
3799 push (@dist_targets, 'dist-hook')
3800 if user_phony_rule 'dist-hook';
3801 $transform{'DIST-TARGETS'} = join (' ', @dist_targets);
3803 my $flm = option ('filename-length-max');
3804 my $filename_filter = $flm ? '.' x $flm->[1] : '';
3806 $output_rules .= &file_contents ('distdir',
3807 new Automake::Location,
3808 %transform,
3809 FILENAME_FILTER => $filename_filter);
3810 }
3813 # check_directory ($NAME, $WHERE)
3814 # -------------------------------
3815 # Ensure $NAME is a directory, and that it uses a sane name.
3816 # Use $WHERE as a location in the diagnostic, if any.
3817 sub check_directory ($$)
3818 {
3819 my ($dir, $where) = @_;
3821 error $where, "required directory $relative_dir/$dir does not exist"
3822 unless -d "$relative_dir/$dir";
3824 # If an `obj/' directory exists, BSD make will enter it before
3825 # reading `Makefile'. Hence the `Makefile' in the current directory
3826 # will not be read.
3827 #
3828 # % cat Makefile
3829 # all:
3830 # echo Hello
3831 # % cat obj/Makefile
3832 # all:
3833 # echo World
3834 # % make # GNU make
3835 # echo Hello
3836 # Hello
3837 # % pmake # BSD make
3838 # echo World
3839 # World
3840 msg ('portability', $where,
3841 "naming a subdirectory `obj' causes troubles with BSD make")
3842 if $dir eq 'obj';
3844 # `aux' is probably the most important of the following forbidden name,
3845 # since it's tempting to use it as an AC_CONFIG_AUX_DIR.
3846 msg ('portability', $where,
3847 "name `$dir' is reserved on W32 and DOS platforms")
3848 if grep (/^\Q$dir\E$/i, qw/aux lpt1 lpt2 lpt3 com1 com2 com3 com4 con prn/);
3849 }
3851 # check_directories_in_var ($VARIABLE)
3852 # ------------------------------------
3853 # Recursively check all items in variables $VARIABLE as directories
3854 sub check_directories_in_var ($)
3855 {
3856 my ($var) = @_;
3857 $var->traverse_recursively
3858 (sub
3859 {
3860 my ($var, $val, $cond, $full_cond) = @_;
3861 check_directory ($val, $var->rdef ($cond)->location);
3862 return ();
3863 },
3864 undef,
3865 skip_ac_subst => 1);
3866 }
3868 # &handle_subdirs ()
3869 # ------------------
3870 # Handle subdirectories.
3871 sub handle_subdirs ()
3872 {
3873 my $subdirs = var ('SUBDIRS');
3874 return
3875 unless $subdirs;
3877 check_directories_in_var $subdirs;
3879 my $dsubdirs = var ('DIST_SUBDIRS');
3880 check_directories_in_var $dsubdirs
3881 if $dsubdirs;
3883 $output_rules .= &file_contents ('subdirs', new Automake::Location);
3884 rvar ('RECURSIVE_TARGETS')->rdef (TRUE)->{'pretty'} = VAR_SORTED; # Gross!
3885 }
3888 # ($REGEN, @DEPENDENCIES)
3889 # &scan_aclocal_m4
3890 # ----------------
3891 # If aclocal.m4 creation is automated, return the list of its dependencies.
3892 sub scan_aclocal_m4 ()
3893 {
3894 my $regen_aclocal = 0;
3896 set_seen 'CONFIG_STATUS_DEPENDENCIES';
3897 set_seen 'CONFIGURE_DEPENDENCIES';
3899 if (-f 'aclocal.m4')
3900 {
3901 &define_variable ("ACLOCAL_M4", '$(top_srcdir)/aclocal.m4', INTERNAL);
3903 my $aclocal = new Automake::XFile "< aclocal.m4";
3904 my $line = $aclocal->getline;
3905 $regen_aclocal = $line =~ 'generated automatically by aclocal';
3906 }
3908 my @ac_deps = ();
3910 if (set_seen ('ACLOCAL_M4_SOURCES'))
3911 {
3912 push (@ac_deps, '$(ACLOCAL_M4_SOURCES)');
3913 msg_var ('obsolete', 'ACLOCAL_M4_SOURCES',
3914 "`ACLOCAL_M4_SOURCES' is obsolete.\n"
3915 . "It should be safe to simply remove it.");
3916 }
3918 # Note that it might be possible that aclocal.m4 doesn't exist but
3919 # should be auto-generated. This case probably isn't very
3920 # important.
3922 return ($regen_aclocal, @ac_deps);
3923 }
3926 # Helper function for substitute_ac_subst_variables.
3927 sub substitute_ac_subst_variables_worker($)
3928 {
3929 my ($token) = @_;
3930 return "\@$token\@" if var $token;
3931 return "\${$token\}";
3932 }
3934 # substitute_ac_subst_variables ($TEXT)
3935 # -------------------------------------
3936 # Replace any occurrence of ${FOO} in $TEXT by @FOO@ if FOO is an AC_SUBST
3937 # variable.
3938 sub substitute_ac_subst_variables ($)
3939 {
3940 my ($text) = @_;
3941 $text =~ s/\${([^ \t=:+{}]+)}/&substitute_ac_subst_variables_worker ($1)/ge;
3942 return $text;
3943 }
3945 # @DEPENDENCIES
3946 # &prepend_srcdir (@INPUTS)
3947 # -------------------------
3948 # Prepend $(srcdir) or $(top_srcdir) to all @INPUTS. The idea is that
3949 # if an input file has a directory part the same as the current
3950 # directory, then the directory part is simply replaced by $(srcdir).
3951 # But if the directory part is different, then $(top_srcdir) is
3952 # prepended.
3953 sub prepend_srcdir (@)
3954 {
3955 my (@inputs) = @_;
3956 my @newinputs;
3958 foreach my $single (@inputs)
3959 {
3960 if (dirname ($single) eq $relative_dir)
3961 {
3962 push (@newinputs, '$(srcdir)/' . basename ($single));
3963 }
3964 else
3965 {
3966 push (@newinputs, '$(top_srcdir)/' . $single);
3967 }
3968 }
3969 return @newinputs;
3970 }
3972 # @DEPENDENCIES
3973 # rewrite_inputs_into_dependencies ($OUTPUT, @INPUTS)
3974 # ---------------------------------------------------
3975 # Compute a list of dependencies appropriate for the rebuild
3976 # rule of
3977 # AC_CONFIG_FILES($OUTPUT:$INPUT[0]:$INPUTS[1]:...)
3978 # Also distribute $INPUTs which are not built by another AC_CONFIG_FOOS.
3979 sub rewrite_inputs_into_dependencies ($@)
3980 {
3981 my ($file, @inputs) = @_;
3982 my @res = ();
3984 for my $i (@inputs)
3985 {
3986 # We cannot create dependencies on shell variables.
3987 next if (substitute_ac_subst_variables $i) =~ /\$/;
3989 if (exists $ac_config_files_location{$i} && $i ne $file)
3990 {
3991 my $di = dirname $i;
3992 if ($di eq $relative_dir)
3993 {
3994 $i = basename $i;
3995 }
3996 # In the top-level Makefile we do not use $(top_builddir), because
3997 # we are already there, and since the targets are built without
3998 # a $(top_builddir), it helps BSD Make to match them with
3999 # dependencies.
4000 elsif ($relative_dir ne '.')
4001 {
4002 $i = '$(top_builddir)/' . $i;
4003 }
4004 }
4005 else
4006 {
4007 msg ('error', $ac_config_files_location{$file},
4008 "required file `$i' not found")
4009 unless $i =~ /\$/ || exists $output_files{$i} || -f $i;
4010 ($i) = prepend_srcdir ($i);
4011 push_dist_common ($i);
4012 }
4013 push @res, $i;
4014 }
4015 return @res;
4016 }
4020 # &handle_configure ($MAKEFILE_AM, $MAKEFILE_IN, $MAKEFILE, @INPUTS)
4021 # ------------------------------------------------------------------
4022 # Handle remaking and configure stuff.
4023 # We need the name of the input file, to do proper remaking rules.
4024 sub handle_configure ($$$@)
4025 {
4026 my ($makefile_am, $makefile_in, $makefile, @inputs) = @_;
4028 prog_error 'empty @inputs'
4029 unless @inputs;
4031 my ($rel_makefile_am, $rel_makefile_in) = prepend_srcdir ($makefile_am,
4032 $makefile_in);
4033 my $rel_makefile = basename $makefile;
4035 my $colon_infile = ':' . join (':', @inputs);
4036 $colon_infile = '' if $colon_infile eq ":$makefile.in";
4037 my @rewritten = rewrite_inputs_into_dependencies ($makefile, @inputs);
4038 my ($regen_aclocal_m4, @aclocal_m4_deps) = scan_aclocal_m4;
4039 define_pretty_variable ('am__aclocal_m4_deps', TRUE, INTERNAL,
4040 @configure_deps, @aclocal_m4_deps,
4041 '$(top_srcdir)/' . $configure_ac);
4042 my @configuredeps = ('$(am__aclocal_m4_deps)', '$(CONFIGURE_DEPENDENCIES)');
4043 push @configuredeps, '$(ACLOCAL_M4)' if -f 'aclocal.m4';
4044 define_pretty_variable ('am__configure_deps', TRUE, INTERNAL,
4045 @configuredeps);
4047 $output_rules .= file_contents
4048 ('configure',
4049 new Automake::Location,
4050 MAKEFILE => $rel_makefile,
4051 'MAKEFILE-DEPS' => "@rewritten",
4052 'CONFIG-MAKEFILE' => ($relative_dir eq '.') ? '$@' : '$(subdir)/$@',
4053 'MAKEFILE-IN' => $rel_makefile_in,
4054 'MAKEFILE-IN-DEPS' => "@include_stack",
4055 'MAKEFILE-AM' => $rel_makefile_am,
4056 STRICTNESS => global_option 'cygnus'
4057 ? 'cygnus' : $strictness_name,
4058 'USE-DEPS' => global_option 'no-dependencies'
4059 ? ' --ignore-deps' : '',
4060 'MAKEFILE-AM-SOURCES' => "$makefile$colon_infile",
4061 'REGEN-ACLOCAL-M4' => $regen_aclocal_m4);
4063 if ($relative_dir eq '.')
4064 {
4065 &push_dist_common ('acconfig.h')
4066 if -f 'acconfig.h';
4067 }
4069 # If we have a configure header, require it.
4070 my $hdr_index = 0;
4071 my @distclean_config;
4072 foreach my $spec (@config_headers)
4073 {
4074 $hdr_index += 1;
4075 # $CONFIG_H_PATH: config.h from top level.
4076 my ($config_h_path, @ins) = split_config_file_spec ($spec);
4077 my $config_h_dir = dirname ($config_h_path);
4079 # If the header is in the current directory we want to build
4080 # the header here. Otherwise, if we're at the topmost
4081 # directory and the header's directory doesn't have a
4082 # Makefile, then we also want to build the header.
4083 if ($relative_dir eq $config_h_dir
4084 || ($relative_dir eq '.' && ! &is_make_dir ($config_h_dir)))
4085 {
4086 my ($cn_sans_dir, $stamp_dir);
4087 if ($relative_dir eq $config_h_dir)
4088 {
4089 $cn_sans_dir = basename ($config_h_path);
4090 $stamp_dir = '';
4091 }
4092 else
4093 {
4094 $cn_sans_dir = $config_h_path;
4095 if ($config_h_dir eq '.')
4096 {
4097 $stamp_dir = '';
4098 }
4099 else
4100 {
4101 $stamp_dir = $config_h_dir . '/';
4102 }
4103 }
4105 # This will also distribute all inputs.
4106 @ins = rewrite_inputs_into_dependencies ($config_h_path, @ins);
4108 # Cannot define rebuild rules for filenames with shell variables.
4109 next if (substitute_ac_subst_variables $config_h_path) =~ /\$/;
4111 # Header defined in this directory.
4112 my @files;
4113 if (-f $config_h_path . '.top')
4114 {
4115 push (@files, "$cn_sans_dir.top");
4116 }
4117 if (-f $config_h_path . '.bot')
4118 {
4119 push (@files, "$cn_sans_dir.bot");
4120 }
4122 push_dist_common (@files);
4124 # For now, acconfig.h can only appear in the top srcdir.
4125 if (-f 'acconfig.h')
4126 {
4127 push (@files, '$(top_srcdir)/acconfig.h');
4128 }
4130 my $stamp = "${stamp_dir}stamp-h${hdr_index}";
4131 $output_rules .=
4132 file_contents ('remake-hdr',
4133 new Automake::Location,
4134 FILES => "@files",
4135 CONFIG_H => $cn_sans_dir,
4136 CONFIG_HIN => $ins[0],
4137 CONFIG_H_DEPS => "@ins",
4138 CONFIG_H_PATH => $config_h_path,
4139 STAMP => "$stamp");
4141 push @distclean_config, $cn_sans_dir, $stamp;
4142 }
4143 }
4145 $output_rules .= file_contents ('clean-hdr',
4146 new Automake::Location,
4147 FILES => "@distclean_config")
4148 if @distclean_config;
4150 # Distribute and define mkinstalldirs only if it is already present
4151 # in the package, for backward compatibility (some people may still
4152 # use $(mkinstalldirs)).
4153 my $mkidpath = "$config_aux_dir/mkinstalldirs";
4154 if (-f $mkidpath)
4155 {
4156 # Use require_file so that any existing script gets updated
4157 # by --force-missing.
4158 require_conf_file ($mkidpath, FOREIGN, 'mkinstalldirs');
4159 define_variable ('mkinstalldirs',
4160 "\$(SHELL) $am_config_aux_dir/mkinstalldirs", INTERNAL);
4161 }
4162 else
4163 {
4164 # Use $(install_sh), not $(MKDIR_P) because the latter requires
4165 # at least one argument, and $(mkinstalldirs) used to work
4166 # even without arguments (e.g. $(mkinstalldirs) $(conditional_dir)).
4167 define_variable ('mkinstalldirs', '$(install_sh) -d', INTERNAL);
4168 }
4170 reject_var ('CONFIG_HEADER',
4171 "`CONFIG_HEADER' is an anachronism; now determined "
4172 . "automatically\nfrom `$configure_ac'");
4174 my @config_h;
4175 foreach my $spec (@config_headers)
4176 {
4177 my ($out, @ins) = split_config_file_spec ($spec);
4178 # Generate CONFIG_HEADER define.
4179 if ($relative_dir eq dirname ($out))
4180 {
4181 push @config_h, basename ($out);
4182 }
4183 else
4184 {
4185 push @config_h, "\$(top_builddir)/$out";
4186 }
4187 }
4188 define_variable ("CONFIG_HEADER", "@config_h", INTERNAL)
4189 if @config_h;
4191 # Now look for other files in this directory which must be remade
4192 # by config.status, and generate rules for them.
4193 my @actual_other_files = ();
4194 # These get cleaned only in a VPATH build.
4195 my @actual_other_vpath_files = ();
4196 foreach my $lfile (@other_input_files)
4197 {
4198 my $file;
4199 my @inputs;
4200 if ($lfile =~ /^([^:]*):(.*)$/)
4201 {
4202 # This is the ":" syntax of AC_OUTPUT.
4203 $file = $1;
4204 @inputs = split (':', $2);
4205 }
4206 else
4207 {
4208 # Normal usage.
4209 $file = $lfile;
4210 @inputs = $file . '.in';
4211 }
4213 # Automake files should not be stored in here, but in %MAKE_LIST.
4214 prog_error ("$lfile in \@other_input_files\n"
4215 . "\@other_input_files = (@other_input_files)")
4216 if -f $file . '.am';
4218 my $local = basename ($file);
4220 # We skip files that aren't in this directory. However, if
4221 # the file's directory does not have a Makefile, and we are
4222 # currently doing `.', then we create a rule to rebuild the
4223 # file in the subdir.
4224 my $fd = dirname ($file);
4225 if ($fd ne $relative_dir)
4226 {
4227 if ($relative_dir eq '.' && ! &is_make_dir ($fd))
4228 {
4229 $local = $file;
4230 }
4231 else
4232 {
4233 next;
4234 }
4235 }
4237 my @rewritten_inputs = rewrite_inputs_into_dependencies ($file, @inputs);
4239 # Cannot output rules for shell variables.
4240 next if (substitute_ac_subst_variables $local) =~ /\$/;
4242 my $condstr = '';
4243 my $cond = $ac_config_files_condition{$lfile};
4244 if (defined $cond)
4245 {
4246 $condstr = $cond->subst_string;
4247 Automake::Rule::define ($local, $configure_ac, RULE_AUTOMAKE, $cond,
4248 $ac_config_files_location{$file});
4249 }
4250 $output_rules .= ($condstr . $local . ': '
4251 . '$(top_builddir)/config.status '
4252 . "@rewritten_inputs\n"
4253 . $condstr . "\t"
4254 . 'cd $(top_builddir) && '
4255 . '$(SHELL) ./config.status '
4256 . ($relative_dir eq '.' ? '' : '$(subdir)/')
4257 . '$@'
4258 . "\n");
4259 push (@actual_other_files, $local);
4260 }
4262 # For links we should clean destinations and distribute sources.
4263 foreach my $spec (@config_links)
4264 {
4265 my ($link, $file) = split /:/, $spec;
4266 # Some people do AC_CONFIG_LINKS($computed). We only handle
4267 # the DEST:SRC form.
4268 next unless $file;
4269 my $where = $ac_config_files_location{$link};
4271 # Skip destinations that contain shell variables.
4272 if ((substitute_ac_subst_variables $link) !~ /\$/)
4273 {
4274 # We skip links that aren't in this directory. However, if
4275 # the link's directory does not have a Makefile, and we are
4276 # currently doing `.', then we add the link to CONFIG_CLEAN_FILES
4277 # in `.'s Makefile.in.
4278 my $local = basename ($link);
4279 my $fd = dirname ($link);
4280 if ($fd ne $relative_dir)
4281 {
4282 if ($relative_dir eq '.' && ! &is_make_dir ($fd))
4283 {
4284 $local = $link;
4285 }
4286 else
4287 {
4288 $local = undef;
4289 }
4290 }
4291 if ($file ne $link)
4292 {
4293 push @actual_other_files, $local if $local;
4294 }
4295 else
4296 {
4297 push @actual_other_vpath_files, $local if $local;
4298 }
4299 }
4301 # Do not process sources that contain shell variables.
4302 if ((substitute_ac_subst_variables $file) !~ /\$/)
4303 {
4304 my $fd = dirname ($file);
4306 # We distribute files that are in this directory.
4307 # At the top-level (`.') we also distribute files whose
4308 # directory does not have a Makefile.
4309 if (($fd eq $relative_dir)
4310 || ($relative_dir eq '.' && ! &is_make_dir ($fd)))
4311 {
4312 # The following will distribute $file as a side-effect when
4313 # it is appropriate (i.e., when $file is not already an output).
4314 # We do not need the result, just the side-effect.
4315 rewrite_inputs_into_dependencies ($link, $file);
4316 }
4317 }
4318 }
4320 # These files get removed by "make distclean".
4321 define_pretty_variable ('CONFIG_CLEAN_FILES', TRUE, INTERNAL,
4322 @actual_other_files);
4323 define_pretty_variable ('CONFIG_CLEAN_VPATH_FILES', TRUE, INTERNAL,
4324 @actual_other_vpath_files);
4325 }
4327 # Handle C headers.
4328 sub handle_headers
4329 {
4330 my @r = &am_install_var ('-defaultdist', 'header', 'HEADERS', 'include',
4331 'oldinclude', 'pkginclude',
4332 'noinst', 'check');
4333 foreach (@r)
4334 {
4335 next unless $_->[1] =~ /\..*$/;
4336 &saw_extension ($&);
4337 }
4338 }
4340 sub handle_gettext
4341 {
4342 return if ! $seen_gettext || $relative_dir ne '.';
4344 my $subdirs = var 'SUBDIRS';
4346 if (! $subdirs)
4347 {
4348 err_ac "AM_GNU_GETTEXT used but SUBDIRS not defined";
4349 return;
4350 }
4352 # Perform some sanity checks to help users get the right setup.
4353 # We disable these tests when po/ doesn't exist in order not to disallow
4354 # unusual gettext setups.
4355 #
4356 # Bruno Haible:
4357 # | The idea is:
4358 # |
4359 # | 1) If a package doesn't have a directory po/ at top level, it
4360 # | will likely have multiple po/ directories in subpackages.
4361 # |
4362 # | 2) It is useful to warn for the absence of intl/ if AM_GNU_GETTEXT
4363 # | is used without 'external'. It is also useful to warn for the
4364 # | presence of intl/ if AM_GNU_GETTEXT([external]) is used. Both
4365 # | warnings apply only to the usual layout of packages, therefore
4366 # | they should both be disabled if no po/ directory is found at
4367 # | top level.
4369 if (-d 'po')
4370 {
4371 my @subdirs = $subdirs->value_as_list_recursive;
4373 msg_var ('syntax', $subdirs,
4374 "AM_GNU_GETTEXT used but `po' not in SUBDIRS")
4375 if ! grep ($_ eq 'po', @subdirs);
4377 # intl/ is not required when AM_GNU_GETTEXT is called with the
4378 # `external' option and AM_GNU_GETTEXT_INTL_SUBDIR is not called.
4379 msg_var ('syntax', $subdirs,
4380 "AM_GNU_GETTEXT used but `intl' not in SUBDIRS")
4381 if (! ($seen_gettext_external && ! $seen_gettext_intl)
4382 && ! grep ($_ eq 'intl', @subdirs));
4384 # intl/ should not be used with AM_GNU_GETTEXT([external]), except
4385 # if AM_GNU_GETTEXT_INTL_SUBDIR is called.
4386 msg_var ('syntax', $subdirs,
4387 "`intl' should not be in SUBDIRS when "
4388 . "AM_GNU_GETTEXT([external]) is used")
4389 if ($seen_gettext_external && ! $seen_gettext_intl
4390 && grep ($_ eq 'intl', @subdirs));
4391 }
4393 require_file ($ac_gettext_location, GNU, 'ABOUT-NLS');
4394 }
4396 # Handle footer elements.
4397 sub handle_footer
4398 {
4399 reject_rule ('.SUFFIXES',
4400 "use variable `SUFFIXES', not target `.SUFFIXES'");
4402 # Note: AIX 4.1 /bin/make will fail if any suffix rule appears
4403 # before .SUFFIXES. So we make sure that .SUFFIXES appears before
4404 # anything else, by sticking it right after the default: target.
4405 $output_header .= ".SUFFIXES:\n";
4406 my $suffixes = var 'SUFFIXES';
4407 my @suffixes = Automake::Rule::suffixes;
4408 if (@suffixes || $suffixes)
4409 {
4410 # Make sure SUFFIXES has unique elements. Sort them to ensure
4411 # the output remains consistent. However, $(SUFFIXES) is
4412 # always at the start of the list, unsorted. This is done
4413 # because make will choose rules depending on the ordering of
4414 # suffixes, and this lets the user have some control. Push
4415 # actual suffixes, and not $(SUFFIXES). Some versions of make
4416 # do not like variable substitutions on the .SUFFIXES line.
4417 my @user_suffixes = ($suffixes
4418 ? $suffixes->value_as_list_recursive : ());
4420 my %suffixes = map { $_ => 1 } @suffixes;
4421 delete @suffixes{@user_suffixes};
4423 $output_header .= (".SUFFIXES: "
4424 . join (' ', @user_suffixes, sort keys %suffixes)
4425 . "\n");
4426 }
4428 $output_trailer .= file_contents ('footer', new Automake::Location);
4429 }
4432 # Generate `make install' rules.
4433 sub handle_install ()
4434 {
4435 $output_rules .= &file_contents
4436 ('install',
4437 new Automake::Location,
4438 maybe_BUILT_SOURCES => (set_seen ('BUILT_SOURCES')
4439 ? (" \$(BUILT_SOURCES)\n"
4440 . "\t\$(MAKE) \$(AM_MAKEFLAGS)")
4441 : ''),
4442 'installdirs-local' => (user_phony_rule 'installdirs-local'
4443 ? ' installdirs-local' : ''),
4444 am__installdirs => variable_value ('am__installdirs') || '');
4445 }
4448 # Deal with all and all-am.
4449 sub handle_all ($)
4450 {
4451 my ($makefile) = @_;
4453 # Output `all-am'.
4455 # Put this at the beginning for the sake of non-GNU makes. This
4456 # is still wrong if these makes can run parallel jobs. But it is
4457 # right enough.
4458 unshift (@all, basename ($makefile));
4460 foreach my $spec (@config_headers)
4461 {
4462 my ($out, @ins) = split_config_file_spec ($spec);
4463 push (@all, basename ($out))
4464 if dirname ($out) eq $relative_dir;
4465 }
4467 # Install `all' hooks.
4468 push (@all, "all-local")
4469 if user_phony_rule "all-local";
4471 &pretty_print_rule ("all-am:", "\t\t", @all);
4472 &depend ('.PHONY', 'all-am', 'all');
4475 # Output `all'.
4477 my @local_headers = ();
4478 push @local_headers, '$(BUILT_SOURCES)'
4479 if var ('BUILT_SOURCES');
4480 foreach my $spec (@config_headers)
4481 {
4482 my ($out, @ins) = split_config_file_spec ($spec);
4483 push @local_headers, basename ($out)
4484 if dirname ($out) eq $relative_dir;
4485 }
4487 if (@local_headers)
4488 {
4489 # We need to make sure config.h is built before we recurse.
4490 # We also want to make sure that built sources are built
4491 # before any ordinary `all' targets are run. We can't do this
4492 # by changing the order of dependencies to the "all" because
4493 # that breaks when using parallel makes. Instead we handle
4494 # things explicitly.
4495 $output_all .= ("all: @local_headers"
4496 . "\n\t"
4497 . '$(MAKE) $(AM_MAKEFLAGS) '
4498 . (var ('SUBDIRS') ? 'all-recursive' : 'all-am')
4499 . "\n\n");
4500 }
4501 else
4502 {
4503 $output_all .= "all: " . (var ('SUBDIRS')
4504 ? 'all-recursive' : 'all-am') . "\n\n";
4505 }
4506 }
4509 # &do_check_merge_target ()
4510 # -------------------------
4511 # Handle check merge target specially.
4512 sub do_check_merge_target ()
4513 {
4514 # Include user-defined local form of target.
4515 push @check_tests, 'check-local'
4516 if user_phony_rule 'check-local';
4518 # In --cygnus mode, check doesn't depend on all.
4519 if (option 'cygnus')
4520 {
4521 # Just run the local check rules.
4522 pretty_print_rule ('check-am:', "\t\t", @check);
4523 }
4524 else
4525 {
4526 # The check target must depend on the local equivalent of
4527 # `all', to ensure all the primary targets are built. Then it
4528 # must build the local check rules.
4529 $output_rules .= "check-am: all-am\n";
4530 pretty_print_rule ("\t\$(MAKE) \$(AM_MAKEFLAGS)", "\t ",
4531 @check)
4532 if @check;
4533 }
4534 pretty_print_rule ("\t\$(MAKE) \$(AM_MAKEFLAGS)", "\t ",
4535 @check_tests)
4536 if @check_tests;
4538 depend '.PHONY', 'check', 'check-am';
4539 # Handle recursion. We have to honor BUILT_SOURCES like for `all:'.
4540 $output_rules .= ("check: "
4541 . (var ('BUILT_SOURCES')
4542 ? "\$(BUILT_SOURCES)\n\t\$(MAKE) \$(AM_MAKEFLAGS) "
4543 : '')
4544 . (var ('SUBDIRS') ? 'check-recursive' : 'check-am')
4545 . "\n");
4546 }
4548 # handle_clean ($MAKEFILE)
4549 # ------------------------
4550 # Handle all 'clean' targets.
4551 sub handle_clean ($)
4552 {
4553 my ($makefile) = @_;
4555 # Clean the files listed in user variables if they exist.
4556 $clean_files{'$(MOSTLYCLEANFILES)'} = MOSTLY_CLEAN
4557 if var ('MOSTLYCLEANFILES');
4558 $clean_files{'$(CLEANFILES)'} = CLEAN
4559 if var ('CLEANFILES');
4560 $clean_files{'$(DISTCLEANFILES)'} = DIST_CLEAN
4561 if var ('DISTCLEANFILES');
4562 $clean_files{'$(MAINTAINERCLEANFILES)'} = MAINTAINER_CLEAN
4563 if var ('MAINTAINERCLEANFILES');
4565 # Built sources are automatically removed by maintainer-clean.
4566 $clean_files{'$(BUILT_SOURCES)'} = MAINTAINER_CLEAN
4567 if var ('BUILT_SOURCES');
4569 # Compute a list of "rm"s to run for each target.
4570 my %rms = (MOSTLY_CLEAN, [],
4571 CLEAN, [],
4572 DIST_CLEAN, [],
4573 MAINTAINER_CLEAN, []);
4575 foreach my $file (keys %clean_files)
4576 {
4577 my $when = $clean_files{$file};
4578 prog_error 'invalid entry in %clean_files'
4579 unless exists $rms{$when};
4581 my $rm = "rm -f $file";
4582 # If file is a variable, make sure when don't call `rm -f' without args.
4583 $rm ="test -z \"$file\" || $rm"
4584 if ($file =~ /^\s*\$(\(.*\)|\{.*\})\s*$/);
4586 push @{$rms{$when}}, "\t-$rm\n";
4587 }
4589 $output_rules .= &file_contents
4590 ('clean',
4591 new Automake::Location,
4592 MOSTLYCLEAN_RMS => join ('', sort @{$rms{&MOSTLY_CLEAN}}),
4593 CLEAN_RMS => join ('', sort @{$rms{&CLEAN}}),
4594 DISTCLEAN_RMS => join ('', sort @{$rms{&DIST_CLEAN}}),
4595 MAINTAINER_CLEAN_RMS => join ('', sort @{$rms{&MAINTAINER_CLEAN}}),
4596 MAKEFILE => basename $makefile,
4597 );
4598 }
4601 # &target_cmp ($A, $B)
4602 # --------------------
4603 # Subroutine for &handle_factored_dependencies to let `.PHONY' and
4604 # other `.TARGETS' be last.
4605 sub target_cmp
4606 {
4607 return 0 if $a eq $b;
4609 my $a1 = substr ($a, 0, 1);
4610 my $b1 = substr ($b, 0, 1);
4611 if ($a1 ne $b1)
4612 {
4613 return -1 if $b1 eq '.';
4614 return 1 if $a1 eq '.';
4615 }
4616 return $a cmp $b;
4617 }
4620 # &handle_factored_dependencies ()
4621 # --------------------------------
4622 # Handle everything related to gathered targets.
4623 sub handle_factored_dependencies
4624 {
4625 # Reject bad hooks.
4626 foreach my $utarg ('uninstall-data-local', 'uninstall-data-hook',
4627 'uninstall-exec-local', 'uninstall-exec-hook',
4628 'uninstall-dvi-local',
4629 'uninstall-html-local',
4630 'uninstall-info-local',
4631 'uninstall-pdf-local',
4632 'uninstall-ps-local')
4633 {
4634 my $x = $utarg;
4635 $x =~ s/-.*-/-/;
4636 reject_rule ($utarg, "use `$x', not `$utarg'");
4637 }
4639 reject_rule ('install-local',
4640 "use `install-data-local' or `install-exec-local', "
4641 . "not `install-local'");
4643 reject_rule ('install-hook',
4644 "use `install-data-hook' or `install-exec-hook', "
4645 . "not `install-hook'");
4647 # Install the -local hooks.
4648 foreach (keys %dependencies)
4649 {
4650 # Hooks are installed on the -am targets.
4651 s/-am$// or next;
4652 depend ("$_-am", "$_-local")
4653 if user_phony_rule "$_-local";
4654 }
4656 # Install the -hook hooks.
4657 # FIXME: Why not be as liberal as we are with -local hooks?
4658 foreach ('install-exec', 'install-data', 'uninstall')
4659 {
4660 if (user_phony_rule "$_-hook")
4661 {
4662 depend ('.MAKE', "$_-am");
4663 register_action("$_-am",
4664 ("\t\@\$(NORMAL_INSTALL)\n"
4665 . "\t\$(MAKE) \$(AM_MAKEFLAGS) $_-hook"));
4666 }
4667 }
4669 # All the required targets are phony.
4670 depend ('.PHONY', keys %required_targets);
4672 # Actually output gathered targets.
4673 foreach (sort target_cmp keys %dependencies)
4674 {
4675 # If there is nothing about this guy, skip it.
4676 next
4677 unless (@{$dependencies{$_}}
4678 || $actions{$_}
4679 || $required_targets{$_});
4681 # Define gathered targets in undefined conditions.
4682 # FIXME: Right now we must handle .PHONY as an exception,
4683 # because people write things like
4684 # .PHONY: myphonytarget
4685 # to append dependencies. This would not work if Automake
4686 # refrained from defining its own .PHONY target as it does
4687 # with other overridden targets.
4688 # Likewise for `.MAKE'.
4689 my @undefined_conds = (TRUE,);
4690 if ($_ ne '.PHONY' && $_ ne '.MAKE')
4691 {
4692 @undefined_conds =
4693 Automake::Rule::define ($_, 'internal',
4694 RULE_AUTOMAKE, TRUE, INTERNAL);
4695 }
4696 my @uniq_deps = uniq (sort @{$dependencies{$_}});
4697 foreach my $cond (@undefined_conds)
4698 {
4699 my $condstr = $cond->subst_string;
4700 &pretty_print_rule ("$condstr$_:", "$condstr\t", @uniq_deps);
4701 $output_rules .= $actions{$_} if defined $actions{$_};
4702 $output_rules .= "\n";
4703 }
4704 }
4705 }
4708 # &handle_tests_dejagnu ()
4709 # ------------------------
4710 sub handle_tests_dejagnu
4711 {
4712 push (@check_tests, 'check-DEJAGNU');
4713 $output_rules .= file_contents ('dejagnu', new Automake::Location);
4714 }
4717 # Handle TESTS variable and other checks.
4718 sub handle_tests
4719 {
4720 if (option 'dejagnu')
4721 {
4722 &handle_tests_dejagnu;
4723 }
4724 else
4725 {
4726 foreach my $c ('DEJATOOL', 'RUNTEST', 'RUNTESTFLAGS')
4727 {
4728 reject_var ($c, "`$c' defined but `dejagnu' not in "
4729 . "`AUTOMAKE_OPTIONS'");
4730 }
4731 }
4733 if (var ('TESTS'))
4734 {
4735 push (@check_tests, 'check-TESTS');
4736 $output_rules .= &file_contents ('check', new Automake::Location,
4737 COLOR => !! option 'color-tests');
4739 # Tests that are known programs should have $(EXEEXT) appended.
4740 # For matching purposes, we need to adjust XFAIL_TESTS as well.
4741 append_exeext { exists $known_programs{$_[0]} } 'TESTS';
4742 append_exeext { exists $known_programs{$_[0]} } 'XFAIL_TESTS'
4743 if (var ('XFAIL_TESTS'));
4744 }
4745 }
4747 # Handle Emacs Lisp.
4748 sub handle_emacs_lisp
4749 {
4750 my @elfiles = &am_install_var ('-candist', 'lisp', 'LISP',
4751 'lisp', 'noinst');
4753 return if ! @elfiles;
4755 define_pretty_variable ('am__ELFILES', TRUE, INTERNAL,
4756 map { $_->[1] } @elfiles);
4757 define_pretty_variable ('am__ELCFILES', TRUE, INTERNAL,
4758 '$(am__ELFILES:.el=.elc)');
4759 # This one can be overridden by users.
4760 define_pretty_variable ('ELCFILES', TRUE, INTERNAL, '$(LISP:.el=.elc)');
4762 push @all, '$(ELCFILES)';
4764 require_variables ($elfiles[0][0], "Emacs Lisp sources seen", TRUE,
4765 'EMACS', 'lispdir');
4766 require_conf_file ($elfiles[0][0], FOREIGN, 'elisp-comp');
4767 &define_variable ('elisp_comp', "$am_config_aux_dir/elisp-comp", INTERNAL);
4768 }
4770 # Handle Python
4771 sub handle_python
4772 {
4773 my @pyfiles = &am_install_var ('-defaultdist', 'python', 'PYTHON',
4774 'noinst');
4775 return if ! @pyfiles;
4777 require_variables ($pyfiles[0][0], "Python sources seen", TRUE, 'PYTHON');
4778 require_conf_file ($pyfiles[0][0], FOREIGN, 'py-compile');
4779 &define_variable ('py_compile', "$am_config_aux_dir/py-compile", INTERNAL);
4780 }
4782 # Handle Java.
4783 sub handle_java
4784 {
4785 my @sourcelist = &am_install_var ('-candist',
4786 'java', 'JAVA',
4787 'java', 'noinst', 'check');
4788 return if ! @sourcelist;
4790 my @prefix = am_primary_prefixes ('JAVA', 1,
4791 'java', 'noinst', 'check');
4793 my $dir;
4794 foreach my $curs (@prefix)
4795 {
4796 next
4797 if $curs eq 'EXTRA';
4799 err_var "${curs}_JAVA", "multiple _JAVA primaries in use"
4800 if defined $dir;
4801 $dir = $curs;
4802 }
4805 push (@all, 'class' . $dir . '.stamp');
4806 }
4809 # Handle some of the minor options.
4810 sub handle_minor_options
4811 {
4812 if (option 'readme-alpha')
4813 {
4814 if ($relative_dir eq '.')
4815 {
4816 if ($package_version !~ /^$GNITS_VERSION_PATTERN$/)
4817 {
4818 msg ('error-gnits', $package_version_location,
4819 "version `$package_version' doesn't follow " .
4820 "Gnits standards");
4821 }
4822 if (defined $1 && -f 'README-alpha')
4823 {
4824 # This means we have an alpha release. See
4825 # GNITS_VERSION_PATTERN for details.
4826 push_dist_common ('README-alpha');
4827 }
4828 }
4829 }
4830 }
4832 ################################################################
4834 # ($OUTPUT, @INPUTS)
4835 # &split_config_file_spec ($SPEC)
4836 # -------------------------------
4837 # Decode the Autoconf syntax for config files (files, headers, links
4838 # etc.).
4839 sub split_config_file_spec ($)
4840 {
4841 my ($spec) = @_;
4842 my ($output, @inputs) = split (/:/, $spec);
4844 push @inputs, "$output.in"
4845 unless @inputs;
4847 return ($output, @inputs);
4848 }
4850 # $input
4851 # locate_am (@POSSIBLE_SOURCES)
4852 # -----------------------------
4853 # AC_CONFIG_FILES allow specifications such as Makefile:top.in:mid.in:bot.in
4854 # This functions returns the first *.in file for which a *.am exists.
4855 # It returns undef otherwise.
4856 sub locate_am (@)
4857 {
4858 my (@rest) = @_;
4859 my $input;
4860 foreach my $file (@rest)
4861 {
4862 if (($file =~ /^(.*)\.in$/) && -f "$1.am")
4863 {
4864 $input = $file;
4865 last;
4866 }
4867 }
4868 return $input;
4869 }
4871 my %make_list;
4873 # &scan_autoconf_config_files ($WHERE, $CONFIG-FILES)
4874 # ---------------------------------------------------
4875 # Study $CONFIG-FILES which is the first argument to AC_CONFIG_FILES
4876 # (or AC_OUTPUT).
4877 sub scan_autoconf_config_files ($$)
4878 {
4879 my ($where, $config_files) = @_;
4881 # Look at potential Makefile.am's.
4882 foreach (split ' ', $config_files)
4883 {
4884 # Must skip empty string for Perl 4.
4885 next if $_ eq "\\" || $_ eq '';
4887 # Handle $local:$input syntax.
4888 my ($local, @rest) = split (/:/);
4889 @rest = ("$local.in",) unless @rest;
4890 msg ('portability', $where,
4891 "Omit leading `./' from config file names such as `$local',"
4892 . "\nas not all make implementations treat `file' and `./file' equally.")
4893 if ($local =~ /^\.\//);
4894 my $input = locate_am @rest;
4895 if ($input)
4896 {
4897 # We have a file that automake should generate.
4898 $make_list{$input} = join (':', ($local, @rest));
4899 }
4900 else
4901 {
4902 # We have a file that automake should cause to be
4903 # rebuilt, but shouldn't generate itself.
4904 push (@other_input_files, $_);
4905 }
4906 $ac_config_files_location{$local} = $where;
4907 $ac_config_files_condition{$local} =
4908 new Automake::Condition (@cond_stack)
4909 if (@cond_stack);
4910 }
4911 }
4914 # &scan_autoconf_traces ($FILENAME)
4915 # ---------------------------------
4916 sub scan_autoconf_traces ($)
4917 {
4918 my ($filename) = @_;
4920 # Macros to trace, with their minimal number of arguments.
4921 #
4922 # IMPORTANT: If you add a macro here, you should also add this macro
4923 # ========= to Automake-preselection in autoconf/lib/autom4te.in.
4924 my %traced = (
4925 AC_CANONICAL_BUILD => 0,
4926 AC_CANONICAL_HOST => 0,
4927 AC_CANONICAL_TARGET => 0,
4928 AC_CONFIG_AUX_DIR => 1,
4929 AC_CONFIG_FILES => 1,
4930 AC_CONFIG_HEADERS => 1,
4931 AC_CONFIG_LIBOBJ_DIR => 1,
4932 AC_CONFIG_LINKS => 1,
4933 AC_FC_SRCEXT => 1,
4934 AC_INIT => 0,
4935 AC_LIBSOURCE => 1,
4936 AC_REQUIRE_AUX_FILE => 1,
4937 AC_SUBST_TRACE => 1,
4938 AM_AUTOMAKE_VERSION => 1,
4939 AM_CONDITIONAL => 2,
4940 AM_ENABLE_MULTILIB => 0,
4941 AM_GNU_GETTEXT => 0,
4942 AM_GNU_GETTEXT_INTL_SUBDIR => 0,
4943 AM_INIT_AUTOMAKE => 0,
4944 AM_MAINTAINER_MODE => 0,
4945 AM_PROG_CC_C_O => 0,
4946 _AM_SUBST_NOTMAKE => 1,
4947 _AM_COND_IF => 1,
4948 _AM_COND_ELSE => 1,
4949 _AM_COND_ENDIF => 1,
4950 LT_SUPPORTED_TAG => 1,
4951 _LT_AC_TAGCONFIG => 0,
4952 m4_include => 1,
4953 m4_sinclude => 1,
4954 sinclude => 1,
4955 );
4957 my $traces = ($ENV{AUTOCONF} || 'autoconf') . " ";
4959 # Use a separator unlikely to be used, not `:', the default, which
4960 # has a precise meaning for AC_CONFIG_FILES and so on.
4961 $traces .= join (' ',
4962 map { "--trace=$_" . ':\$f:\$l::\$d::\$n::\${::}%' }
4963 (keys %traced));
4965 my $tracefh = new Automake::XFile ("$traces $filename |");
4966 verb "reading $traces";
4968 @cond_stack = ();
4969 my $where;
4971 while ($_ = $tracefh->getline)
4972 {
4973 chomp;
4974 my ($here, $depth, @args) = split (/::/);
4975 $where = new Automake::Location $here;
4976 my $macro = $args[0];
4978 prog_error ("unrequested trace `$macro'")
4979 unless exists $traced{$macro};
4981 # Skip and diagnose malformed calls.
4982 if ($#args < $traced{$macro})
4983 {
4984 msg ('syntax', $where, "not enough arguments for $macro");
4985 next;
4986 }
4988 # Alphabetical ordering please.
4989 if ($macro eq 'AC_CANONICAL_BUILD')
4990 {
4991 if ($seen_canonical <= AC_CANONICAL_BUILD)
4992 {
4993 $seen_canonical = AC_CANONICAL_BUILD;
4994 $canonical_location = $where;
4995 }
4996 }
4997 elsif ($macro eq 'AC_CANONICAL_HOST')
4998 {
4999 if ($seen_canonical <= AC_CANONICAL_HOST)
5000 {
5001 $seen_canonical = AC_CANONICAL_HOST;
5002 $canonical_location = $where;
5003 }
5004 }
5005 elsif ($macro eq 'AC_CANONICAL_TARGET')
5006 {
5007 $seen_canonical = AC_CANONICAL_TARGET;
5008 $canonical_location = $where;
5009 }
5010 elsif ($macro eq 'AC_CONFIG_AUX_DIR')
5011 {
5012 if ($seen_init_automake)
5013 {
5014 error ($where, "AC_CONFIG_AUX_DIR must be called before "
5015 . "AM_INIT_AUTOMAKE...", partial => 1);
5016 error ($seen_init_automake, "... AM_INIT_AUTOMAKE called here");
5017 }
5018 $config_aux_dir = $args[1];
5019 $config_aux_dir_set_in_configure_ac = 1;
5020 $relative_dir = '.';
5021 check_directory ($config_aux_dir, $where);
5022 }
5023 elsif ($macro eq 'AC_CONFIG_FILES')
5024 {
5025 # Look at potential Makefile.am's.
5026 scan_autoconf_config_files ($where, $args[1]);
5027 }
5028 elsif ($macro eq 'AC_CONFIG_HEADERS')
5029 {
5030 foreach my $spec (split (' ', $args[1]))
5031 {
5032 my ($dest, @src) = split (':', $spec);
5033 $ac_config_files_location{$dest} = $where;
5034 push @config_headers, $spec;
5035 }
5036 }
5037 elsif ($macro eq 'AC_CONFIG_LIBOBJ_DIR')
5038 {
5039 $config_libobj_dir = $args[1];
5040 $relative_dir = '.';
5041 check_directory ($config_libobj_dir, $where);
5042 }
5043 elsif ($macro eq 'AC_CONFIG_LINKS')
5044 {
5045 foreach my $spec (split (' ', $args[1]))
5046 {
5047 my ($dest, $src) = split (':', $spec);
5048 $ac_config_files_location{$dest} = $where;
5049 push @config_links, $spec;
5050 }
5051 }
5052 elsif ($macro eq 'AC_FC_SRCEXT')
5053 {
5054 my $suffix = $args[1];
5055 # These flags are used as %SOURCEFLAG% in depend2.am,
5056 # where the trailing space is important.
5057 $sourceflags{'.' . $suffix} = '$(FCFLAGS_' . $suffix . ') '
5058 if ($suffix eq 'f90' || $suffix eq 'f95' || $suffix eq 'f03' || $suffix eq 'f08');
5059 }
5060 elsif ($macro eq 'AC_INIT')
5061 {
5062 if (defined $args[2])
5063 {
5064 $package_version = $args[2];
5065 $package_version_location = $where;
5066 }
5067 }
5068 elsif ($macro eq 'AC_LIBSOURCE')
5069 {
5070 $libsources{$args[1]} = $here;
5071 }
5072 elsif ($macro eq 'AC_REQUIRE_AUX_FILE')
5073 {
5074 # Only remember the first time a file is required.
5075 $required_aux_file{$args[1]} = $where
5076 unless exists $required_aux_file{$args[1]};
5077 }
5078 elsif ($macro eq 'AC_SUBST_TRACE')
5079 {
5080 # Just check for alphanumeric in AC_SUBST_TRACE. If you do
5081 # AC_SUBST(5), then too bad.
5082 $configure_vars{$args[1]} = $where
5083 if $args[1] =~ /^\w+$/;
5084 }
5085 elsif ($macro eq 'AM_AUTOMAKE_VERSION')
5086 {
5087 error ($where,
5088 "version mismatch. This is Automake $VERSION,\n" .
5089 "but the definition used by this AM_INIT_AUTOMAKE\n" .
5090 "comes from Automake $args[1]. You should recreate\n" .
5091 "aclocal.m4 with aclocal and run automake again.\n",
5092 # $? = 63 is used to indicate version mismatch to missing.
5093 exit_code => 63)
5094 if $VERSION ne $args[1];
5096 $seen_automake_version = 1;
5097 }
5098 elsif ($macro eq 'AM_CONDITIONAL')
5099 {
5100 $configure_cond{$args[1]} = $where;
5101 }
5102 elsif ($macro eq 'AM_ENABLE_MULTILIB')
5103 {
5104 $seen_multilib = $where;
5105 }
5106 elsif ($macro eq 'AM_GNU_GETTEXT')
5107 {
5108 $seen_gettext = $where;
5109 $ac_gettext_location = $where;
5110 $seen_gettext_external = grep ($_ eq 'external', @args);
5111 }
5112 elsif ($macro eq 'AM_GNU_GETTEXT_INTL_SUBDIR')
5113 {
5114 $seen_gettext_intl = $where;
5115 }
5116 elsif ($macro eq 'AM_INIT_AUTOMAKE')
5117 {
5118 $seen_init_automake = $where;
5119 if (defined $args[2])
5120 {
5121 $package_version = $args[2];
5122 $package_version_location = $where;
5123 }
5124 elsif (defined $args[1])
5125 {
5126 exit $exit_code
5127 if (process_global_option_list ($where,
5128 split (' ', $args[1])));
5129 }
5130 }
5131 elsif ($macro eq 'AM_MAINTAINER_MODE')
5132 {
5133 $seen_maint_mode = $where;
5134 }
5135 elsif ($macro eq 'AM_PROG_CC_C_O')
5136 {
5137 $seen_cc_c_o = $where;
5138 }
5139 elsif ($macro eq '_AM_COND_IF')
5140 {
5141 cond_stack_if ('', $args[1], $where);
5142 error ($where, "missing m4 quoting, macro depth $depth")
5143 if ($depth != 1);
5144 }
5145 elsif ($macro eq '_AM_COND_ELSE')
5146 {
5147 cond_stack_else ('!', $args[1], $where);
5148 error ($where, "missing m4 quoting, macro depth $depth")
5149 if ($depth != 1);
5150 }
5151 elsif ($macro eq '_AM_COND_ENDIF')
5152 {
5153 cond_stack_endif (undef, undef, $where);
5154 error ($where, "missing m4 quoting, macro depth $depth")
5155 if ($depth != 1);
5156 }
5157 elsif ($macro eq '_AM_SUBST_NOTMAKE')
5158 {
5159 $ignored_configure_vars{$args[1]} = $where;
5160 }
5161 elsif ($macro eq 'm4_include'
5162 || $macro eq 'm4_sinclude'
5163 || $macro eq 'sinclude')
5164 {
5165 # Skip missing `sinclude'd files.
5166 next if $macro ne 'm4_include' && ! -f $args[1];
5168 # Some modified versions of Autoconf don't use
5169 # frozen files. Consequently it's possible that we see all
5170 # m4_include's performed during Autoconf's startup.
5171 # Obviously we don't want to distribute Autoconf's files
5172 # so we skip absolute filenames here.
5173 push @configure_deps, '$(top_srcdir)/' . $args[1]
5174 unless $here =~ m,^(?:\w:)?[\\/],;
5175 # Keep track of the greatest timestamp.
5176 if (-e $args[1])
5177 {
5178 my $mtime = mtime $args[1];
5179 $configure_deps_greatest_timestamp = $mtime
5180 if $mtime > $configure_deps_greatest_timestamp;
5181 }
5182 }
5183 elsif ($macro eq 'LT_SUPPORTED_TAG')
5184 {
5185 $libtool_tags{$args[1]} = 1;
5186 $libtool_new_api = 1;
5187 }
5188 elsif ($macro eq '_LT_AC_TAGCONFIG')
5189 {
5190 # _LT_AC_TAGCONFIG is an old macro present in Libtool 1.5.
5191 # We use it to detect whether tags are supported. Our
5192 # preferred interface is LT_SUPPORTED_TAG, but it was
5193 # introduced in Libtool 1.6.
5194 if (0 == keys %libtool_tags)
5195 {
5196 # Hardcode the tags supported by Libtool 1.5.
5197 %libtool_tags = (CC => 1, CXX => 1, GCJ => 1, F77 => 1);
5198 }
5199 }
5200 }
5202 error ($where, "condition stack not properly closed")
5203 if (@cond_stack);
5205 $tracefh->close;
5206 }
5209 # &scan_autoconf_files ()
5210 # -----------------------
5211 # Check whether we use `configure.ac' or `configure.in'.
5212 # Scan it (and possibly `aclocal.m4') for interesting things.
5213 # We must scan aclocal.m4 because there might be AC_SUBSTs and such there.
5214 sub scan_autoconf_files ()
5215 {
5216 # Reinitialize libsources here. This isn't really necessary,
5217 # since we currently assume there is only one configure.ac. But
5218 # that won't always be the case.
5219 %libsources = ();
5221 # Keep track of the youngest configure dependency.
5222 $configure_deps_greatest_timestamp = mtime $configure_ac;
5223 if (-e 'aclocal.m4')
5224 {
5225 my $mtime = mtime 'aclocal.m4';
5226 $configure_deps_greatest_timestamp = $mtime
5227 if $mtime > $configure_deps_greatest_timestamp;
5228 }
5230 scan_autoconf_traces ($configure_ac);
5232 @configure_input_files = sort keys %make_list;
5233 # Set input and output files if not specified by user.
5234 if (! @input_files)
5235 {
5236 @input_files = @configure_input_files;
5237 %output_files = %make_list;
5238 }
5241 if (! $seen_init_automake)
5242 {
5243 err_ac ("no proper invocation of AM_INIT_AUTOMAKE was found.\nYou "
5244 . "should verify that $configure_ac invokes AM_INIT_AUTOMAKE,"
5245 . "\nthat aclocal.m4 is present in the top-level directory,\n"
5246 . "and that aclocal.m4 was recently regenerated "
5247 . "(using aclocal).");
5248 }
5249 else
5250 {
5251 if (! $seen_automake_version)
5252 {
5253 if (-f 'aclocal.m4')
5254 {
5255 error ($seen_init_automake,
5256 "your implementation of AM_INIT_AUTOMAKE comes from " .
5257 "an\nold Automake version. You should recreate " .
5258 "aclocal.m4\nwith aclocal and run automake again.\n",
5259 # $? = 63 is used to indicate version mismatch to missing.
5260 exit_code => 63);
5261 }
5262 else
5263 {
5264 error ($seen_init_automake,
5265 "no proper implementation of AM_INIT_AUTOMAKE was " .
5266 "found,\nprobably because aclocal.m4 is missing...\n" .
5267 "You should run aclocal to create this file, then\n" .
5268 "run automake again.\n");
5269 }
5270 }
5271 }
5273 locate_aux_dir ();
5275 # Reorder @input_files so that the Makefile that distributes aux
5276 # files is processed last. This is important because each directory
5277 # can require auxiliary scripts and we should wait until they have
5278 # been installed before distributing them.
5280 # The Makefile.in that distribute the aux files is the one in
5281 # $config_aux_dir or the top-level Makefile.
5282 my $auxdirdist = is_make_dir ($config_aux_dir) ? $config_aux_dir : '.';
5283 my @new_input_files = ();
5284 while (@input_files)
5285 {
5286 my $in = pop @input_files;
5287 my @ins = split (/:/, $output_files{$in});
5288 if (dirname ($ins[0]) eq $auxdirdist)
5289 {
5290 push @new_input_files, $in;
5291 $automake_will_process_aux_dir = 1;
5292 }
5293 else
5294 {
5295 unshift @new_input_files, $in;
5296 }
5297 }
5298 @input_files = @new_input_files;
5300 # If neither the auxdir/Makefile nor the ./Makefile are generated
5301 # by Automake, we won't distribute the aux files anyway. Assume
5302 # the user know what (s)he does, and pretend we will distribute
5303 # them to disable the error in require_file_internal.
5304 $automake_will_process_aux_dir = 1 if ! is_make_dir ($auxdirdist);
5306 # Look for some files we need. Always check for these. This
5307 # check must be done for every run, even those where we are only
5308 # looking at a subdir Makefile. We must set relative_dir for
5309 # maybe_push_required_file to work.
5310 # Sort the files for stable verbose output.
5311 $relative_dir = '.';
5312 foreach my $file (sort keys %required_aux_file)
5313 {
5314 require_conf_file ($required_aux_file{$file}->get, FOREIGN, $file)
5315 }
5316 err_am "`install.sh' is an anachronism; use `install-sh' instead"
5317 if -f $config_aux_dir . '/install.sh';
5319 # Preserve dist_common for later.
5320 $configure_dist_common = variable_value ('DIST_COMMON') || '';
5322 }
5324 ################################################################
5326 # Set up for Cygnus mode.
5327 sub check_cygnus
5328 {
5329 my $cygnus = option 'cygnus';
5330 return unless $cygnus;
5332 set_strictness ('foreign');
5333 set_option ('no-installinfo', $cygnus);
5334 set_option ('no-dependencies', $cygnus);
5335 set_option ('no-dist', $cygnus);
5337 err_ac "`AM_MAINTAINER_MODE' required when --cygnus specified"
5338 if !$seen_maint_mode;
5339 }
5341 # Do any extra checking for GNU standards.
5342 sub check_gnu_standards
5343 {
5344 if ($relative_dir eq '.')
5345 {
5346 # In top level (or only) directory.
5347 require_file ("$am_file.am", GNU,
5348 qw/INSTALL NEWS README AUTHORS ChangeLog/);
5350 # Accept one of these three licenses; default to COPYING.
5351 # Make sure we do not overwrite an existing license.
5352 my $license;
5353 foreach (qw /COPYING COPYING.LIB COPYING.LESSER/)
5354 {
5355 if (-f $_)
5356 {
5357 $license = $_;
5358 last;
5359 }
5360 }
5361 require_file ("$am_file.am", GNU, 'COPYING')
5362 unless $license;
5363 }
5365 for my $opt ('no-installman', 'no-installinfo')
5366 {
5367 msg ('error-gnu', option $opt,
5368 "option `$opt' disallowed by GNU standards")
5369 if option $opt;
5370 }
5371 }
5373 # Do any extra checking for GNITS standards.
5374 sub check_gnits_standards
5375 {
5376 if ($relative_dir eq '.')
5377 {
5378 # In top level (or only) directory.
5379 require_file ("$am_file.am", GNITS, 'THANKS');
5380 }
5381 }
5383 ################################################################
5384 #
5385 # Functions to handle files of each language.
5387 # Each `lang_X_rewrite($DIRECTORY, $BASE, $EXT)' function follows a
5388 # simple formula: Return value is LANG_SUBDIR if the resulting object
5389 # file should be in a subdir if the source file is, LANG_PROCESS if
5390 # file is to be dealt with, LANG_IGNORE otherwise.
5392 # Much of the actual processing is handled in
5393 # handle_single_transform. These functions exist so that
5394 # auxiliary information can be recorded for a later cleanup pass.
5395 # Note that the calls to these functions are computed, so don't bother
5396 # searching for their precise names in the source.
5398 # This is just a convenience function that can be used to determine
5399 # when a subdir object should be used.
5400 sub lang_sub_obj
5401 {
5402 return option 'subdir-objects' ? LANG_SUBDIR : LANG_PROCESS;
5403 }
5405 # Rewrite a single C source file.
5406 sub lang_c_rewrite
5407 {
5408 my ($directory, $base, $ext, $nonansi_obj, $have_per_exec_flags, $var) = @_;
5410 if (option 'ansi2knr' && $base =~ /_$/)
5411 {
5412 # FIXME: include line number in error.
5413 err_am "C source file `$base.c' would be deleted by ansi2knr rules";
5414 }
5416 my $r = LANG_PROCESS;
5417 if (option 'subdir-objects')
5418 {
5419 $r = LANG_SUBDIR;
5420 if ($directory && $directory ne '.')
5421 {
5422 $base = $directory . '/' . $base;
5424 # libtool is always able to put the object at the proper place,
5425 # so we do not have to require AM_PROG_CC_C_O when building .lo files.
5426 msg_var ('portability', $var,
5427 "compiling `$base.c' in subdir requires "
5428 . "`AM_PROG_CC_C_O' in `$configure_ac'",
5429 uniq_scope => US_GLOBAL,
5430 uniq_part => 'AM_PROG_CC_C_O subdir')
5431 unless $seen_cc_c_o || $nonansi_obj eq '.lo';
5432 }
5434 # In this case we already have the directory information, so
5435 # don't add it again.
5436 $de_ansi_files{$base} = '';
5437 }
5438 else
5439 {
5440 $de_ansi_files{$base} = (($directory eq '.' || $directory eq '')
5441 ? ''
5442 : "$directory/");
5443 }
5445 if (! $seen_cc_c_o
5446 && $have_per_exec_flags
5447 && ! option 'subdir-objects'
5448 && $nonansi_obj ne '.lo')
5449 {
5450 msg_var ('portability',
5451 $var, "compiling `$base.c' with per-target flags requires "
5452 . "`AM_PROG_CC_C_O' in `$configure_ac'",
5453 uniq_scope => US_GLOBAL,
5454 uniq_part => 'AM_PROG_CC_C_O per-target')
5455 }
5457 return $r;
5458 }
5460 # Rewrite a single C++ source file.
5461 sub lang_cxx_rewrite
5462 {
5463 return &lang_sub_obj;
5464 }
5466 # Rewrite a single header file.
5467 sub lang_header_rewrite
5468 {
5469 # Header files are simply ignored.
5470 return LANG_IGNORE;
5471 }
5473 # Rewrite a single yacc file.
5474 sub lang_yacc_rewrite
5475 {
5476 my ($directory, $base, $ext) = @_;
5478 my $r = &lang_sub_obj;
5479 (my $newext = $ext) =~ tr/y/c/;
5480 return ($r, $newext);
5481 }
5483 # Rewrite a single yacc++ file.
5484 sub lang_yaccxx_rewrite
5485 {
5486 my ($directory, $base, $ext) = @_;
5488 my $r = &lang_sub_obj;
5489 (my $newext = $ext) =~ tr/y/c/;
5490 return ($r, $newext);
5491 }
5493 # Rewrite a single lex file.
5494 sub lang_lex_rewrite
5495 {
5496 my ($directory, $base, $ext) = @_;
5498 my $r = &lang_sub_obj;
5499 (my $newext = $ext) =~ tr/l/c/;
5500 return ($r, $newext);
5501 }
5503 # Rewrite a single lex++ file.
5504 sub lang_lexxx_rewrite
5505 {
5506 my ($directory, $base, $ext) = @_;
5508 my $r = &lang_sub_obj;
5509 (my $newext = $ext) =~ tr/l/c/;
5510 return ($r, $newext);
5511 }
5513 # Rewrite a single assembly file.
5514 sub lang_asm_rewrite
5515 {
5516 return &lang_sub_obj;
5517 }
5519 # Rewrite a single preprocessed assembly file.
5520 sub lang_cppasm_rewrite
5521 {
5522 return &lang_sub_obj;
5523 }
5525 # Rewrite a single Fortran 77 file.
5526 sub lang_f77_rewrite
5527 {
5528 return &lang_sub_obj;
5529 }
5531 # Rewrite a single Fortran file.
5532 sub lang_fc_rewrite
5533 {
5534 return &lang_sub_obj;
5535 }
5537 # Rewrite a single preprocessed Fortran file.
5538 sub lang_ppfc_rewrite
5539 {
5540 return &lang_sub_obj;
5541 }
5543 # Rewrite a single preprocessed Fortran 77 file.
5544 sub lang_ppf77_rewrite
5545 {
5546 return &lang_sub_obj;
5547 }
5549 # Rewrite a single ratfor file.
5550 sub lang_ratfor_rewrite
5551 {
5552 return &lang_sub_obj;
5553 }
5555 # Rewrite a single Objective C file.
5556 sub lang_objc_rewrite
5557 {
5558 return &lang_sub_obj;
5559 }
5561 # Rewrite a single Unified Parallel C file.
5562 sub lang_upc_rewrite
5563 {
5564 return &lang_sub_obj;
5565 }
5567 # Rewrite a single Java file.
5568 sub lang_java_rewrite
5569 {
5570 return LANG_SUBDIR;
5571 }
5573 # The lang_X_finish functions are called after all source file
5574 # processing is done. Each should handle defining rules for the
5575 # language, etc. A finish function is only called if a source file of
5576 # the appropriate type has been seen.
5578 sub lang_c_finish
5579 {
5580 # Push all libobjs files onto de_ansi_files. We actually only
5581 # push files which exist in the current directory, and which are
5582 # genuine source files.
5583 foreach my $file (keys %libsources)
5584 {
5585 if ($file =~ /^(.*)\.[cly]$/ && -f "$relative_dir/$file")
5586 {
5587 $de_ansi_files{$1} = ''
5588 }
5589 }
5591 if (option 'ansi2knr' && keys %de_ansi_files)
5592 {
5593 # Make all _.c files depend on their corresponding .c files.
5594 my @objects;
5595 foreach my $base (sort keys %de_ansi_files)
5596 {
5597 # Each _.c file must depend on ansi2knr; otherwise it
5598 # might be used in a parallel build before it is built.
5599 # We need to support files in the srcdir and in the build
5600 # dir (because these files might be auto-generated. But
5601 # we can't use $< -- some makes only define $< during a
5602 # suffix rule.
5603 my $ansfile = $de_ansi_files{$base} . $base . '.c';
5604 $output_rules .= ($base . "_.c: $ansfile \$(ANSI2KNR)\n\t"
5605 . '$(CPP) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS) $(CPPFLAGS) '
5606 . '`if test -f $(srcdir)/' . $ansfile
5607 . '; then echo $(srcdir)/' . $ansfile
5608 . '; else echo ' . $ansfile . '; fi` '
5609 . "| sed 's/^# \\([0-9]\\)/#line \\1/' "
5610 . '| $(ANSI2KNR) > $@'
5611 # If ansi2knr fails then we shouldn't
5612 # create the _.c file
5613 . " || rm -f \$\@\n");
5614 push (@objects, $base . '_.$(OBJEXT)');
5615 push (@objects, $base . '_.lo')
5616 if var ('LIBTOOL');
5618 # Explicitly clean the _.c files if they are in a
5619 # subdirectory. (In the current directory they get erased
5620 # by a `rm -f *_.c' rule.)
5621 $clean_files{$base . '_.c'} = MOSTLY_CLEAN
5622 if dirname ($base) ne '.';
5623 }
5625 # Make all _.o (and _.lo) files depend on ansi2knr.
5626 # Use a sneaky little hack to make it print nicely.
5627 &pretty_print_rule ('', '', @objects, ':', '$(ANSI2KNR)');
5628 }
5629 }
5631 # This is a yacc helper which is called whenever we have decided to
5632 # compile a yacc file.
5633 sub lang_yacc_target_hook
5634 {
5635 my ($self, $aggregate, $output, $input, %transform) = @_;
5637 my $flag = $aggregate . "_YFLAGS";
5638 my $flagvar = var $flag;
5639 my $YFLAGSvar = var 'YFLAGS';
5640 if (($flagvar && $flagvar->variable_value =~ /$DASH_D_PATTERN/o)
5641 || ($YFLAGSvar && $YFLAGSvar->variable_value =~ /$DASH_D_PATTERN/o))
5642 {
5643 (my $output_base = $output) =~ s/$KNOWN_EXTENSIONS_PATTERN$//;
5644 my $header = $output_base . '.h';
5646 # Found a `-d' that applies to the compilation of this file.
5647 # Add a dependency for the generated header file, and arrange
5648 # for that file to be included in the distribution.
5649 foreach my $cond (Automake::Rule::define (${header}, 'internal',
5650 RULE_AUTOMAKE, TRUE,
5651 INTERNAL))
5652 {
5653 my $condstr = $cond->subst_string;
5654 $output_rules .=
5655 "$condstr${header}: $output\n"
5656 # Recover from removal of $header
5657 . "$condstr\t\@if test ! -f \$@; then \\\n"
5658 . "$condstr\t rm -f $output; \\\n"
5659 . "$condstr\t \$(MAKE) \$(AM_MAKEFLAGS) $output; \\\n"
5660 . "$condstr\telse :; fi\n";
5661 }
5662 # Distribute the generated file, unless its .y source was
5663 # listed in a nodist_ variable. (&handle_source_transform
5664 # will set DIST_SOURCE.)
5665 &push_dist_common ($header)
5666 if $transform{'DIST_SOURCE'};
5668 # If the files are built in the build directory, then we want
5669 # to remove them with `make clean'. If they are in srcdir
5670 # they shouldn't be touched. However, we can't determine this
5671 # statically, and the GNU rules say that yacc/lex output files
5672 # should be removed by maintainer-clean. So that's what we
5673 # do.
5674 $clean_files{$header} = MAINTAINER_CLEAN;
5675 }
5676 # Erase $OUTPUT on `make maintainer-clean' (by GNU standards).
5677 # See the comment above for $HEADER.
5678 $clean_files{$output} = MAINTAINER_CLEAN;
5679 }
5681 # This is a lex helper which is called whenever we have decided to
5682 # compile a lex file.
5683 sub lang_lex_target_hook
5684 {
5685 my ($self, $aggregate, $output, $input) = @_;
5686 # If the files are built in the build directory, then we want to
5687 # remove them with `make clean'. If they are in srcdir they
5688 # shouldn't be touched. However, we can't determine this
5689 # statically, and the GNU rules say that yacc/lex output files
5690 # should be removed by maintainer-clean. So that's what we do.
5691 $clean_files{$output} = MAINTAINER_CLEAN;
5692 }
5694 # This is a helper for both lex and yacc.
5695 sub yacc_lex_finish_helper
5696 {
5697 return if defined $language_scratch{'lex-yacc-done'};
5698 $language_scratch{'lex-yacc-done'} = 1;
5700 # FIXME: for now, no line number.
5701 require_conf_file ($configure_ac, FOREIGN, 'ylwrap');
5702 &define_variable ('YLWRAP', "$am_config_aux_dir/ylwrap", INTERNAL);
5703 }
5705 sub lang_yacc_finish
5706 {
5707 return if defined $language_scratch{'yacc-done'};
5708 $language_scratch{'yacc-done'} = 1;
5710 reject_var 'YACCFLAGS', "`YACCFLAGS' obsolete; use `YFLAGS' instead";
5712 yacc_lex_finish_helper;
5713 }
5716 sub lang_lex_finish
5717 {
5718 return if defined $language_scratch{'lex-done'};
5719 $language_scratch{'lex-done'} = 1;
5721 yacc_lex_finish_helper;
5722 }
5725 # Given a hash table of linker names, pick the name that has the most
5726 # precedence. This is lame, but something has to have global
5727 # knowledge in order to eliminate the conflict. Add more linkers as
5728 # required.
5729 sub resolve_linker
5730 {
5731 my (%linkers) = @_;
5733 foreach my $l (qw(GCJLINK CXXLINK F77LINK FCLINK OBJCLINK UPCLINK))
5734 {
5735 return $l if defined $linkers{$l};
5736 }
5737 return 'LINK';
5738 }
5740 # Called to indicate that an extension was used.
5741 sub saw_extension
5742 {
5743 my ($ext) = @_;
5744 if (! defined $extension_seen{$ext})
5745 {
5746 $extension_seen{$ext} = 1;
5747 }
5748 else
5749 {
5750 ++$extension_seen{$ext};
5751 }
5752 }
5754 # Return the number of files seen for a given language. Knows about
5755 # special cases we care about. FIXME: this is hideous. We need
5756 # something that involves real language objects. For instance yacc
5757 # and yaccxx could both derive from a common yacc class which would
5758 # know about the strange ylwrap requirement. (Or better yet we could
5759 # just not support legacy yacc!)
5760 sub count_files_for_language
5761 {
5762 my ($name) = @_;
5764 my @names;
5765 if ($name eq 'yacc' || $name eq 'yaccxx')
5766 {
5767 @names = ('yacc', 'yaccxx');
5768 }
5769 elsif ($name eq 'lex' || $name eq 'lexxx')
5770 {
5771 @names = ('lex', 'lexxx');
5772 }
5773 else
5774 {
5775 @names = ($name);
5776 }
5778 my $r = 0;
5779 foreach $name (@names)
5780 {
5781 my $lang = $languages{$name};
5782 foreach my $ext (@{$lang->extensions})
5783 {
5784 $r += $extension_seen{$ext}
5785 if defined $extension_seen{$ext};
5786 }
5787 }
5789 return $r
5790 }
5792 # Called to ask whether source files have been seen . If HEADERS is 1,
5793 # headers can be included.
5794 sub saw_sources_p
5795 {
5796 my ($headers) = @_;
5798 # count all the sources
5799 my $count = 0;
5800 foreach my $val (values %extension_seen)
5801 {
5802 $count += $val;
5803 }
5805 if (!$headers)
5806 {
5807 $count -= count_files_for_language ('header');
5808 }
5810 return $count > 0;
5811 }
5814 # register_language (%ATTRIBUTE)
5815 # ------------------------------
5816 # Register a single language.
5817 # Each %ATTRIBUTE is of the form ATTRIBUTE => VALUE.
5818 sub register_language (%)
5819 {
5820 my (%option) = @_;
5822 # Set the defaults.
5823 $option{'ansi'} = 0
5824 unless defined $option{'ansi'};
5825 $option{'autodep'} = 'no'
5826 unless defined $option{'autodep'};
5827 $option{'linker'} = ''
5828 unless defined $option{'linker'};
5829 $option{'flags'} = []
5830 unless defined $option{'flags'};
5831 $option{'output_extensions'} = sub { return ( '.$(OBJEXT)', '.lo' ) }
5832 unless defined $option{'output_extensions'};
5833 $option{'nodist_specific'} = 0
5834 unless defined $option{'nodist_specific'};
5836 my $lang = new Language (%option);
5838 # Fill indexes.
5839 $extension_map{$_} = $lang->name foreach @{$lang->extensions};
5840 $languages{$lang->name} = $lang;
5841 my $link = $lang->linker;
5842 if ($link)
5843 {
5844 if (exists $link_languages{$link})
5845 {
5846 prog_error ("`$link' has different definitions in "
5847 . $lang->name . " and " . $link_languages{$link}->name)
5848 if $lang->link ne $link_languages{$link}->link;
5849 }
5850 else
5851 {
5852 $link_languages{$link} = $lang;
5853 }
5854 }
5856 # Update the pattern of known extensions.
5857 accept_extensions (@{$lang->extensions});
5859 # Upate the $suffix_rule map.
5860 foreach my $suffix (@{$lang->extensions})
5861 {
5862 foreach my $dest (&{$lang->output_extensions} ($suffix))
5863 {
5864 register_suffix_rule (INTERNAL, $suffix, $dest);
5865 }
5866 }
5867 }
5869 # derive_suffix ($EXT, $OBJ)
5870 # --------------------------
5871 # This function is used to find a path from a user-specified suffix $EXT
5872 # to $OBJ or to some other suffix we recognize internally, e.g. `cc'.
5873 sub derive_suffix ($$)
5874 {
5875 my ($source_ext, $obj) = @_;
5877 while (! $extension_map{$source_ext}
5878 && $source_ext ne $obj
5879 && exists $suffix_rules->{$source_ext}
5880 && exists $suffix_rules->{$source_ext}{$obj})
5881 {
5882 $source_ext = $suffix_rules->{$source_ext}{$obj}[0];
5883 }
5885 return $source_ext;
5886 }
5889 ################################################################
5891 # Pretty-print something and append to output_rules.
5892 sub pretty_print_rule
5893 {
5894 $output_rules .= &makefile_wrap (@_);
5895 }
5898 ################################################################
5901 ## -------------------------------- ##
5902 ## Handling the conditional stack. ##
5903 ## -------------------------------- ##
5906 # $STRING
5907 # make_conditional_string ($NEGATE, $COND)
5908 # ----------------------------------------
5909 sub make_conditional_string ($$)
5910 {
5911 my ($negate, $cond) = @_;
5912 $cond = "${cond}_TRUE"
5913 unless $cond =~ /^TRUE|FALSE$/;
5914 $cond = Automake::Condition::conditional_negate ($cond)
5915 if $negate;
5916 return $cond;
5917 }
5920 my %_am_macro_for_cond =
5921 (
5922 AMDEP => "one of the compiler tests\n"
5923 . " AC_PROG_CC, AC_PROG_CXX, AC_PROG_CXX, AC_PROG_OBJC,\n"
5924 . " AM_PROG_AS, AM_PROG_GCJ, AM_PROG_UPC",
5925 am__fastdepCC => 'AC_PROG_CC',
5926 am__fastdepCCAS => 'AM_PROG_AS',
5927 am__fastdepCXX => 'AC_PROG_CXX',
5928 am__fastdepGCJ => 'AM_PROG_GCJ',
5929 am__fastdepOBJC => 'AC_PROG_OBJC',
5930 am__fastdepUPC => 'AM_PROG_UPC'
5931 );
5933 # $COND
5934 # cond_stack_if ($NEGATE, $COND, $WHERE)
5935 # --------------------------------------
5936 sub cond_stack_if ($$$)
5937 {
5938 my ($negate, $cond, $where) = @_;
5940 if (! $configure_cond{$cond} && $cond !~ /^TRUE|FALSE$/)
5941 {
5942 my $text = "$cond does not appear in AM_CONDITIONAL";
5943 my $scope = US_LOCAL;
5944 if (exists $_am_macro_for_cond{$cond})
5945 {
5946 my $mac = $_am_macro_for_cond{$cond};
5947 $text .= "\n The usual way to define `$cond' is to add ";
5948 $text .= ($mac =~ / /) ? $mac : "`$mac'";
5949 $text .= "\n to `$configure_ac' and run `aclocal' and `autoconf' again.";
5950 # These warnings appear in Automake files (depend2.am),
5951 # so there is no need to display them more than once:
5952 $scope = US_GLOBAL;
5953 }
5954 error $where, $text, uniq_scope => $scope;
5955 }
5957 push (@cond_stack, make_conditional_string ($negate, $cond));
5959 return new Automake::Condition (@cond_stack);
5960 }
5963 # $COND
5964 # cond_stack_else ($NEGATE, $COND, $WHERE)
5965 # ----------------------------------------
5966 sub cond_stack_else ($$$)
5967 {
5968 my ($negate, $cond, $where) = @_;
5970 if (! @cond_stack)
5971 {
5972 error $where, "else without if";
5973 return FALSE;
5974 }
5976 $cond_stack[$#cond_stack] =
5977 Automake::Condition::conditional_negate ($cond_stack[$#cond_stack]);
5979 # If $COND is given, check against it.
5980 if (defined $cond)
5981 {
5982 $cond = make_conditional_string ($negate, $cond);
5984 error ($where, "else reminder ($negate$cond) incompatible with "
5985 . "current conditional: $cond_stack[$#cond_stack]")
5986 if $cond_stack[$#cond_stack] ne $cond;
5987 }
5989 return new Automake::Condition (@cond_stack);
5990 }
5993 # $COND
5994 # cond_stack_endif ($NEGATE, $COND, $WHERE)
5995 # -----------------------------------------
5996 sub cond_stack_endif ($$$)
5997 {
5998 my ($negate, $cond, $where) = @_;
5999 my $old_cond;
6001 if (! @cond_stack)
6002 {
6003 error $where, "endif without if";
6004 return TRUE;
6005 }
6007 # If $COND is given, check against it.
6008 if (defined $cond)
6009 {
6010 $cond = make_conditional_string ($negate, $cond);
6012 error ($where, "endif reminder ($negate$cond) incompatible with "
6013 . "current conditional: $cond_stack[$#cond_stack]")
6014 if $cond_stack[$#cond_stack] ne $cond;
6015 }
6017 pop @cond_stack;
6019 return new Automake::Condition (@cond_stack);
6020 }
6026 ## ------------------------ ##
6027 ## Handling the variables. ##
6028 ## ------------------------ ##
6031 # &define_pretty_variable ($VAR, $COND, $WHERE, @VALUE)
6032 # -----------------------------------------------------
6033 # Like define_variable, but the value is a list, and the variable may
6034 # be defined conditionally. The second argument is the condition
6035 # under which the value should be defined; this should be the empty
6036 # string to define the variable unconditionally. The third argument
6037 # is a list holding the values to use for the variable. The value is
6038 # pretty printed in the output file.
6039 sub define_pretty_variable ($$$@)
6040 {
6041 my ($var, $cond, $where, @value) = @_;
6043 if (! vardef ($var, $cond))
6044 {
6045 Automake::Variable::define ($var, VAR_AUTOMAKE, '', $cond, "@value",
6046 '', $where, VAR_PRETTY);
6047 rvar ($var)->rdef ($cond)->set_seen;
6048 }
6049 }
6052 # define_variable ($VAR, $VALUE, $WHERE)
6053 # --------------------------------------
6054 # Define a new Automake Makefile variable VAR to VALUE, but only if
6055 # not already defined.
6056 sub define_variable ($$$)
6057 {
6058 my ($var, $value, $where) = @_;
6059 define_pretty_variable ($var, TRUE, $where, $value);
6060 }
6063 # define_files_variable ($VAR, \@BASENAME, $EXTENSION, $WHERE)
6064 # -----------------------------------------------------------
6065 # Define the $VAR which content is the list of file names composed of
6066 # a @BASENAME and the $EXTENSION.
6067 sub define_files_variable ($\@$$)
6068 {
6069 my ($var, $basename, $extension, $where) = @_;
6070 define_variable ($var,
6071 join (' ', map { "$_.$extension" } @$basename),
6072 $where);
6073 }
6076 # Like define_variable, but define a variable to be the configure
6077 # substitution by the same name.
6078 sub define_configure_variable ($)
6079 {
6080 my ($var) = @_;
6082 my $pretty = VAR_ASIS;
6083 my $owner = VAR_CONFIGURE;
6085 # Some variables we do not want to output. For instance it
6086 # would be a bad idea to output `U = @U@` when `@U@` can be
6087 # substituted as `\`.
6088 $pretty = VAR_SILENT if exists $ignored_configure_vars{$var};
6090 # ANSI2KNR is a variable that Automake wants to redefine, so
6091 # it must be owned by Automake. (It is also used as a proof
6092 # that AM_C_PROTOTYPES has been run, that's why we do not simply
6093 # omit the AC_SUBST.)
6094 $owner = VAR_AUTOMAKE if $var eq 'ANSI2KNR';
6096 Automake::Variable::define ($var, $owner, '', TRUE, subst $var,
6097 '', $configure_vars{$var}, $pretty);
6098 }
6101 # define_compiler_variable ($LANG)
6102 # --------------------------------
6103 # Define a compiler variable. We also handle defining the `LT'
6104 # version of the command when using libtool.
6105 sub define_compiler_variable ($)
6106 {
6107 my ($lang) = @_;
6109 my ($var, $value) = ($lang->compiler, $lang->compile);
6110 my $libtool_tag = '';
6111 $libtool_tag = '--tag=' . $lang->libtool_tag . ' '
6112 if $lang->libtool_tag && exists $libtool_tags{$lang->libtool_tag};
6113 &define_variable ($var, $value, INTERNAL);
6114 &define_variable ("LT$var",
6115 "\$(LIBTOOL) $libtool_tag\$(AM_LIBTOOLFLAGS) "
6116 . "\$(LIBTOOLFLAGS) --mode=compile $value",
6117 INTERNAL)
6118 if var ('LIBTOOL');
6119 }
6122 # define_linker_variable ($LANG)
6123 # ------------------------------
6124 # Define linker variables.
6125 sub define_linker_variable ($)
6126 {
6127 my ($lang) = @_;
6129 my $libtool_tag = '';
6130 $libtool_tag = '--tag=' . $lang->libtool_tag . ' '
6131 if $lang->libtool_tag && exists $libtool_tags{$lang->libtool_tag};
6132 # CCLD = $(CC).
6133 &define_variable ($lang->lder, $lang->ld, INTERNAL);
6134 # CCLINK = $(CCLD) blah blah...
6135 &define_variable ($lang->linker,
6136 ((var ('LIBTOOL') ?
6137 "\$(LIBTOOL) $libtool_tag\$(AM_LIBTOOLFLAGS) "
6138 . "\$(LIBTOOLFLAGS) --mode=link " : '')
6139 . $lang->link),
6140 INTERNAL);
6141 }
6143 sub define_per_target_linker_variable ($$)
6144 {
6145 my ($linker, $target) = @_;
6147 # If the user wrote a custom link command, we don't define ours.
6148 return "${target}_LINK"
6149 if set_seen "${target}_LINK";
6151 my $xlink = $linker ? $linker : 'LINK';
6153 my $lang = $link_languages{$xlink};
6154 prog_error "Unknown language for linker variable `$xlink'"
6155 unless $lang;
6157 my $link_command = $lang->link;
6158 if (var 'LIBTOOL')
6159 {
6160 my $libtool_tag = '';
6161 $libtool_tag = '--tag=' . $lang->libtool_tag . ' '
6162 if $lang->libtool_tag && exists $libtool_tags{$lang->libtool_tag};
6164 $link_command =
6165 "\$(LIBTOOL) $libtool_tag\$(AM_LIBTOOLFLAGS) \$(LIBTOOLFLAGS) "
6166 . "--mode=link " . $link_command;
6167 }
6169 # Rewrite each occurrence of `AM_$flag' in the link
6170 # command into `${derived}_$flag' if it exists.
6171 my $orig_command = $link_command;
6172 my @flags = (@{$lang->flags}, 'LDFLAGS');
6173 push @flags, 'LIBTOOLFLAGS' if var 'LIBTOOL';
6174 for my $flag (@flags)
6175 {
6176 my $val = "${target}_$flag";
6177 $link_command =~ s/\(AM_$flag\)/\($val\)/
6178 if set_seen ($val);
6179 }
6181 # If the computed command is the same as the generic command, use
6182 # the command linker variable.
6183 return $lang->linker
6184 if $link_command eq $orig_command;
6186 &define_variable ("${target}_LINK", $link_command, INTERNAL);
6187 return "${target}_LINK";
6188 }
6190 ################################################################
6192 # &check_trailing_slash ($WHERE, $LINE)
6193 # --------------------------------------
6194 # Return 1 iff $LINE ends with a slash.
6195 # Might modify $LINE.
6196 sub check_trailing_slash ($\$)
6197 {
6198 my ($where, $line) = @_;
6200 # Ignore `##' lines.
6201 return 0 if $$line =~ /$IGNORE_PATTERN/o;
6203 # Catch and fix a common error.
6204 msg "syntax", $where, "whitespace following trailing backslash"
6205 if $$line =~ s/\\\s+\n$/\\\n/;
6207 return $$line =~ /\\$/;
6208 }
6211 # &read_am_file ($AMFILE, $WHERE)
6212 # -------------------------------
6213 # Read Makefile.am and set up %contents. Simultaneously copy lines
6214 # from Makefile.am into $output_trailer, or define variables as
6215 # appropriate. NOTE we put rules in the trailer section. We want
6216 # user rules to come after our generated stuff.
6217 sub read_am_file ($$)
6218 {
6219 my ($amfile, $where) = @_;
6221 my $am_file = new Automake::XFile ("< $amfile");
6222 verb "reading $amfile";
6224 # Keep track of the youngest output dependency.
6225 my $mtime = mtime $amfile;
6226 $output_deps_greatest_timestamp = $mtime
6227 if $mtime > $output_deps_greatest_timestamp;
6229 my $spacing = '';
6230 my $comment = '';
6231 my $blank = 0;
6232 my $saw_bk = 0;
6233 my $var_look = VAR_ASIS;
6235 use constant IN_VAR_DEF => 0;
6236 use constant IN_RULE_DEF => 1;
6237 use constant IN_COMMENT => 2;
6238 my $prev_state = IN_RULE_DEF;
6240 while ($_ = $am_file->getline)
6241 {
6242 $where->set ("$amfile:$.");
6243 if (/$IGNORE_PATTERN/o)
6244 {
6245 # Merely delete comments beginning with two hashes.
6246 }
6247 elsif (/$WHITE_PATTERN/o)
6248 {
6249 error $where, "blank line following trailing backslash"
6250 if $saw_bk;
6251 # Stick a single white line before the incoming macro or rule.
6252 $spacing = "\n";
6253 $blank = 1;
6254 # Flush all comments seen so far.
6255 if ($comment ne '')
6256 {
6257 $output_vars .= $comment;
6258 $comment = '';
6259 }
6260 }
6261 elsif (/$COMMENT_PATTERN/o)
6262 {
6263 # Stick comments before the incoming macro or rule. Make
6264 # sure a blank line precedes the first block of comments.
6265 $spacing = "\n" unless $blank;
6266 $blank = 1;
6267 $comment .= $spacing . $_;
6268 $spacing = '';
6269 $prev_state = IN_COMMENT;
6270 }
6271 else
6272 {
6273 last;
6274 }
6275 $saw_bk = check_trailing_slash ($where, $_);
6276 }
6278 # We save the conditional stack on entry, and then check to make
6279 # sure it is the same on exit. This lets us conditionally include
6280 # other files.
6281 my @saved_cond_stack = @cond_stack;
6282 my $cond = new Automake::Condition (@cond_stack);
6284 my $last_var_name = '';
6285 my $last_var_type = '';
6286 my $last_var_value = '';
6287 my $last_where;
6288 # FIXME: shouldn't use $_ in this loop; it is too big.
6289 while ($_)
6290 {
6291 $where->set ("$amfile:$.");
6293 # Make sure the line is \n-terminated.
6294 chomp;
6295 $_ .= "\n";
6297 # Don't look at MAINTAINER_MODE_TRUE here. That shouldn't be
6298 # used by users. @MAINT@ is an anachronism now.
6299 $_ =~ s/\@MAINT\@//g
6300 unless $seen_maint_mode;
6302 my $new_saw_bk = check_trailing_slash ($where, $_);
6304 if (/$IGNORE_PATTERN/o)
6305 {
6306 # Merely delete comments beginning with two hashes.
6308 # Keep any backslash from the previous line.
6309 $new_saw_bk = $saw_bk;
6310 }
6311 elsif (/$WHITE_PATTERN/o)
6312 {
6313 # Stick a single white line before the incoming macro or rule.
6314 $spacing = "\n";
6315 error $where, "blank line following trailing backslash"
6316 if $saw_bk;
6317 }
6318 elsif (/$COMMENT_PATTERN/o)
6319 {
6320 error $where, "comment following trailing backslash"
6321 if $saw_bk && $comment eq '';
6323 # Stick comments before the incoming macro or rule.
6324 $comment .= $spacing . $_;
6325 $spacing = '';
6326 $prev_state = IN_COMMENT;
6327 }
6328 elsif ($saw_bk)
6329 {
6330 if ($prev_state == IN_RULE_DEF)
6331 {
6332 my $cond = new Automake::Condition @cond_stack;
6333 $output_trailer .= $cond->subst_string;
6334 $output_trailer .= $_;
6335 }
6336 elsif ($prev_state == IN_COMMENT)
6337 {
6338 # If the line doesn't start with a `#', add it.
6339 # We do this because a continued comment like
6340 # # A = foo \
6341 # bar \
6342 # baz
6343 # is not portable. BSD make doesn't honor
6344 # escaped newlines in comments.
6345 s/^#?/#/;
6346 $comment .= $spacing . $_;
6347 }
6348 else # $prev_state == IN_VAR_DEF
6349 {
6350 $last_var_value .= ' '
6351 unless $last_var_value =~ /\s$/;
6352 $last_var_value .= $_;
6354 if (!/\\$/)
6355 {
6356 Automake::Variable::define ($last_var_name, VAR_MAKEFILE,
6357 $last_var_type, $cond,
6358 $last_var_value, $comment,
6359 $last_where, VAR_ASIS)
6360 if $cond != FALSE;
6361 $comment = $spacing = '';
6362 }
6363 }
6364 }
6366 elsif (/$IF_PATTERN/o)
6367 {
6368 $cond = cond_stack_if ($1, $2, $where);
6369 }
6370 elsif (/$ELSE_PATTERN/o)
6371 {
6372 $cond = cond_stack_else ($1, $2, $where);
6373 }
6374 elsif (/$ENDIF_PATTERN/o)
6375 {
6376 $cond = cond_stack_endif ($1, $2, $where);
6377 }
6379 elsif (/$RULE_PATTERN/o)
6380 {
6381 # Found a rule.
6382 $prev_state = IN_RULE_DEF;
6384 # For now we have to output all definitions of user rules
6385 # and can't diagnose duplicates (see the comment in
6386 # Automake::Rule::define). So we go on and ignore the return value.
6387 Automake::Rule::define ($1, $amfile, RULE_USER, $cond, $where);
6389 check_variable_expansions ($_, $where);
6391 $output_trailer .= $comment . $spacing;
6392 my $cond = new Automake::Condition @cond_stack;
6393 $output_trailer .= $cond->subst_string;
6394 $output_trailer .= $_;
6395 $comment = $spacing = '';
6396 }
6397 elsif (/$ASSIGNMENT_PATTERN/o)
6398 {
6399 # Found a macro definition.
6400 $prev_state = IN_VAR_DEF;
6401 $last_var_name = $1;
6402 $last_var_type = $2;
6403 $last_var_value = $3;
6404 $last_where = $where->clone;
6405 if ($3 ne '' && substr ($3, -1) eq "\\")
6406 {
6407 # We preserve the `\' because otherwise the long lines
6408 # that are generated will be truncated by broken
6409 # `sed's.
6410 $last_var_value = $3 . "\n";
6411 }
6412 # Normally we try to output variable definitions in the
6413 # same format they were input. However, POSIX compliant
6414 # systems are not required to support lines longer than
6415 # 2048 bytes (most notably, some sed implementation are
6416 # limited to 4000 bytes, and sed is used by config.status
6417 # to rewrite Makefile.in into Makefile). Moreover nobody
6418 # would really write such long lines by hand since it is
6419 # hardly maintainable. So if a line is longer that 1000
6420 # bytes (an arbitrary limit), assume it has been
6421 # automatically generated by some tools, and flatten the
6422 # variable definition. Otherwise, keep the variable as it
6423 # as been input.
6424 $var_look = VAR_PRETTY if length ($last_var_value) >= 1000;
6426 if (!/\\$/)
6427 {
6428 Automake::Variable::define ($last_var_name, VAR_MAKEFILE,
6429 $last_var_type, $cond,
6430 $last_var_value, $comment,
6431 $last_where, $var_look)
6432 if $cond != FALSE;
6433 $comment = $spacing = '';
6434 $var_look = VAR_ASIS;
6435 }
6436 }
6437 elsif (/$INCLUDE_PATTERN/o)
6438 {
6439 my $path = $1;
6441 if ($path =~ s/^\$\(top_srcdir\)\///)
6442 {
6443 push (@include_stack, "\$\(top_srcdir\)/$path");
6444 # Distribute any included file.
6446 # Always use the $(top_srcdir) prefix in DIST_COMMON,
6447 # otherwise OSF make will implicitly copy the included
6448 # file in the build tree during `make distdir' to satisfy
6449 # the dependency.
6450 # (subdircond2.test and subdircond3.test will fail.)
6451 push_dist_common ("\$\(top_srcdir\)/$path");
6452 }
6453 else
6454 {
6455 $path =~ s/\$\(srcdir\)\///;
6456 push (@include_stack, "\$\(srcdir\)/$path");
6457 # Always use the $(srcdir) prefix in DIST_COMMON,
6458 # otherwise OSF make will implicitly copy the included
6459 # file in the build tree during `make distdir' to satisfy
6460 # the dependency.
6461 # (subdircond2.test and subdircond3.test will fail.)
6462 push_dist_common ("\$\(srcdir\)/$path");
6463 $path = $relative_dir . "/" . $path if $relative_dir ne '.';
6464 }
6465 $where->push_context ("`$path' included from here");
6466 &read_am_file ($path, $where);
6467 $where->pop_context;
6468 }
6469 else
6470 {
6471 # This isn't an error; it is probably a continued rule.
6472 # In fact, this is what we assume.
6473 $prev_state = IN_RULE_DEF;
6474 check_variable_expansions ($_, $where);
6475 $output_trailer .= $comment . $spacing;
6476 my $cond = new Automake::Condition @cond_stack;
6477 $output_trailer .= $cond->subst_string;
6478 $output_trailer .= $_;
6479 $comment = $spacing = '';
6480 error $where, "`#' comment at start of rule is unportable"
6481 if $_ =~ /^\t\s*\#/;
6482 }
6484 $saw_bk = $new_saw_bk;
6485 $_ = $am_file->getline;
6486 }
6488 $output_trailer .= $comment;
6490 error ($where, "trailing backslash on last line")
6491 if $saw_bk;
6493 error ($where, (@cond_stack ? "unterminated conditionals: @cond_stack"
6494 : "too many conditionals closed in include file"))
6495 if "@saved_cond_stack" ne "@cond_stack";
6496 }
6499 # define_standard_variables ()
6500 # ----------------------------
6501 # A helper for read_main_am_file which initializes configure variables
6502 # and variables from header-vars.am.
6503 sub define_standard_variables
6504 {
6505 my $saved_output_vars = $output_vars;
6506 my ($comments, undef, $rules) =
6507 file_contents_internal (1, "$libdir/am/header-vars.am",
6508 new Automake::Location);
6510 foreach my $var (sort keys %configure_vars)
6511 {
6512 &define_configure_variable ($var);
6513 }
6515 $output_vars .= $comments . $rules;
6516 }
6518 # Read main am file.
6519 sub read_main_am_file
6520 {
6521 my ($amfile) = @_;
6523 # This supports the strange variable tricks we are about to play.
6524 prog_error (macros_dump () . "variable defined before read_main_am_file")
6525 if (scalar (variables) > 0);
6527 # Generate copyright header for generated Makefile.in.
6528 # We do discard the output of predefined variables, handled below.
6529 $output_vars = ("# $in_file_name generated by automake "
6530 . $VERSION . " from $am_file_name.\n");
6531 $output_vars .= '# ' . subst ('configure_input') . "\n";
6532 $output_vars .= $gen_copyright;
6534 # We want to predefine as many variables as possible. This lets
6535 # the user set them with `+=' in Makefile.am.
6536 &define_standard_variables;
6538 # Read user file, which might override some of our values.
6539 &read_am_file ($amfile, new Automake::Location);
6540 }
6544 ################################################################
6546 # $FLATTENED
6547 # &flatten ($STRING)
6548 # ------------------
6549 # Flatten the $STRING and return the result.
6550 sub flatten
6551 {
6552 $_ = shift;
6554 s/\\\n//somg;
6555 s/\s+/ /g;
6556 s/^ //;
6557 s/ $//;
6559 return $_;
6560 }
6563 # transform_token ($TOKEN, \%PAIRS, $KEY)
6564 # =======================================
6565 # Return the value associated to $KEY in %PAIRS, as used on $TOKEN
6566 # (which should be ?KEY? or any of the special %% requests)..
6567 sub transform_token ($$$)
6568 {
6569 my ($token, $transform, $key) = @_;
6570 my $res = $transform->{$key};
6571 prog_error "Unknown key `$key' in `$token'" unless defined $res;
6572 return $res;
6573 }
6576 # transform ($TOKEN, \%PAIRS)
6577 # ===========================
6578 # If ($TOKEN, $VAL) is in %PAIRS:
6579 # - replaces %KEY% with $VAL,
6580 # - enables/disables ?KEY? and ?!KEY?,
6581 # - replaces %?KEY% with TRUE or FALSE.
6582 # - replaces %KEY?IFTRUE%, %KEY:IFFALSE%, and %KEY?IFTRUE:IFFALSE% with
6583 # IFTRUE / IFFALSE, as appropriate.
6584 sub transform ($$)
6585 {
6586 my ($token, $transform) = @_;
6588 # %KEY%.
6589 # Must be before the following pattern to exclude the case
6590 # when there is neither IFTRUE nor IFFALSE.
6591 if ($token =~ /^%([\w\-]+)%$/)
6592 {
6593 return transform_token ($token, $transform, $1);
6594 }
6595 # %KEY?IFTRUE%, %KEY:IFFALSE%, and %KEY?IFTRUE:IFFALSE%.
6596 elsif ($token =~ /^%([\w\-]+)(?:\?([^?:%]+))?(?::([^?:%]+))?%$/)
6597 {
6598 return transform_token ($token, $transform, $1) ? ($2 || '') : ($3 || '');
6599 }
6600 # %?KEY%.
6601 elsif ($token =~ /^%\?([\w\-]+)%$/)
6602 {
6603 return transform_token ($token, $transform, $1) ? 'TRUE' : 'FALSE';
6604 }
6605 # ?KEY? and ?!KEY?.
6606 elsif ($token =~ /^ \? (!?) ([\w\-]+) \? $/x)
6607 {
6608 my $neg = ($1 eq '!') ? 1 : 0;
6609 my $val = transform_token ($token, $transform, $2);
6610 return (!!$val == $neg) ? '##%' : '';
6611 }
6612 else
6613 {
6614 prog_error "Unknown request format: $token";
6615 }
6616 }
6619 # @PARAGRAPHS
6620 # &make_paragraphs ($MAKEFILE, [%TRANSFORM])
6621 # ------------------------------------------
6622 # Load a $MAKEFILE, apply the %TRANSFORM, and return it as a list of
6623 # paragraphs.
6624 sub make_paragraphs ($%)
6625 {
6626 my ($file, %transform) = @_;
6628 # Complete %transform with global options.
6629 # Note that %transform goes last, so it overrides global options.
6630 %transform = ('CYGNUS' => !! option 'cygnus',
6631 'MAINTAINER-MODE'
6632 => $seen_maint_mode ? subst ('MAINTAINER_MODE_TRUE') : '',
6634 'XZ' => !! option 'dist-xz',
6635 'LZMA' => !! option 'dist-lzma',
6636 'BZIP2' => !! option 'dist-bzip2',
6637 'COMPRESS' => !! option 'dist-tarZ',
6638 'GZIP' => ! option 'no-dist-gzip',
6639 'SHAR' => !! option 'dist-shar',
6640 'ZIP' => !! option 'dist-zip',
6642 'INSTALL-INFO' => ! option 'no-installinfo',
6643 'INSTALL-MAN' => ! option 'no-installman',
6644 'HAVE-MANS' => !! var ('MANS'),
6645 'CK-NEWS' => !! option 'check-news',
6647 'SUBDIRS' => !! var ('SUBDIRS'),
6648 'TOPDIR_P' => $relative_dir eq '.',
6650 'BUILD' => ($seen_canonical >= AC_CANONICAL_BUILD),
6651 'HOST' => ($seen_canonical >= AC_CANONICAL_HOST),
6652 'TARGET' => ($seen_canonical >= AC_CANONICAL_TARGET),
6654 'LIBTOOL' => !! var ('LIBTOOL'),
6655 'NONLIBTOOL' => 1,
6656 'FIRST' => ! $transformed_files{$file},
6657 %transform);
6659 $transformed_files{$file} = 1;
6660 $_ = $am_file_cache{$file};
6662 if (! defined $_)
6663 {
6664 verb "reading $file";
6665 # Swallow the whole file.
6666 my $fc_file = new Automake::XFile "< $file";
6667 my $saved_dollar_slash = $/;
6668 undef $/;
6669 $_ = $fc_file->getline;
6670 $/ = $saved_dollar_slash;
6671 $fc_file->close;
6673 # Remove ##-comments.
6674 # Besides we don't need more than two consecutive new-lines.
6675 s/(?:$IGNORE_PATTERN|(?<=\n\n)\n+)//gom;
6677 $am_file_cache{$file} = $_;
6678 }
6680 # Substitute Automake template tokens.
6681 s/(?: % \?? [\w\-]+ %
6682 | % [\w\-]+ (?:\?[^?:%]+)? (?::[^?:%]+)? %
6683 | \? !? [\w\-]+ \?
6684 )/transform($&, \%transform)/gex;
6685 # transform() may have added some ##%-comments to strip.
6686 # (we use `##%' instead of `##' so we can distinguish ##%##%##% from
6687 # ####### and do not remove the latter.)
6688 s/^[ \t]*(?:##%)+.*\n//gm;
6690 # Split at unescaped new lines.
6691 my @lines = split (/(?<!\\)\n/, $_);
6692 my @res;
6694 while (defined ($_ = shift @lines))
6695 {
6696 my $paragraph = $_;
6697 # If we are a rule, eat as long as we start with a tab.
6698 if (/$RULE_PATTERN/smo)
6699 {
6700 while (defined ($_ = shift @lines) && $_ =~ /^\t/)
6701 {
6702 $paragraph .= "\n$_";
6703 }
6704 unshift (@lines, $_);
6705 }
6707 # If we are a comments, eat as much comments as you can.
6708 elsif (/$COMMENT_PATTERN/smo)
6709 {
6710 while (defined ($_ = shift @lines)
6711 && $_ =~ /$COMMENT_PATTERN/smo)
6712 {
6713 $paragraph .= "\n$_";
6714 }
6715 unshift (@lines, $_);
6716 }
6718 push @res, $paragraph;
6719 }
6721 return @res;
6722 }
6726 # ($COMMENT, $VARIABLES, $RULES)
6727 # &file_contents_internal ($IS_AM, $FILE, $WHERE, [%TRANSFORM])
6728 # -------------------------------------------------------------
6729 # Return contents of a file from $libdir/am, automatically skipping
6730 # macros or rules which are already known. $IS_AM iff the caller is
6731 # reading an Automake file (as opposed to the user's Makefile.am).
6732 sub file_contents_internal ($$$%)
6733 {
6734 my ($is_am, $file, $where, %transform) = @_;
6736 $where->set ($file);
6738 my $result_vars = '';
6739 my $result_rules = '';
6740 my $comment = '';
6741 my $spacing = '';
6743 # The following flags are used to track rules spanning across
6744 # multiple paragraphs.
6745 my $is_rule = 0; # 1 if we are processing a rule.
6746 my $discard_rule = 0; # 1 if the current rule should not be output.
6748 # We save the conditional stack on entry, and then check to make
6749 # sure it is the same on exit. This lets us conditionally include
6750 # other files.
6751 my @saved_cond_stack = @cond_stack;
6752 my $cond = new Automake::Condition (@cond_stack);
6754 foreach (make_paragraphs ($file, %transform))
6755 {
6756 # FIXME: no line number available.
6757 $where->set ($file);
6759 # Sanity checks.
6760 error $where, "blank line following trailing backslash:\n$_"
6761 if /\\$/;
6762 error $where, "comment following trailing backslash:\n$_"
6763 if /\\#/;
6765 if (/^$/)
6766 {
6767 $is_rule = 0;
6768 # Stick empty line before the incoming macro or rule.
6769 $spacing = "\n";
6770 }
6771 elsif (/$COMMENT_PATTERN/mso)
6772 {
6773 $is_rule = 0;
6774 # Stick comments before the incoming macro or rule.
6775 $comment = "$_\n";
6776 }
6778 # Handle inclusion of other files.
6779 elsif (/$INCLUDE_PATTERN/o)
6780 {
6781 if ($cond != FALSE)
6782 {
6783 my $file = ($is_am ? "$libdir/am/" : '') . $1;
6784 $where->push_context ("`$file' included from here");
6785 # N-ary `.=' fails.
6786 my ($com, $vars, $rules)
6787 = file_contents_internal ($is_am, $file, $where, %transform);
6788 $where->pop_context;
6789 $comment .= $com;
6790 $result_vars .= $vars;
6791 $result_rules .= $rules;
6792 }
6793 }
6795 # Handling the conditionals.
6796 elsif (/$IF_PATTERN/o)
6797 {
6798 $cond = cond_stack_if ($1, $2, $file);
6799 }
6800 elsif (/$ELSE_PATTERN/o)
6801 {
6802 $cond = cond_stack_else ($1, $2, $file);
6803 }
6804 elsif (/$ENDIF_PATTERN/o)
6805 {
6806 $cond = cond_stack_endif ($1, $2, $file);
6807 }
6809 # Handling rules.
6810 elsif (/$RULE_PATTERN/mso)
6811 {
6812 $is_rule = 1;
6813 $discard_rule = 0;
6814 # Separate relationship from optional actions: the first
6815 # `new-line tab" not preceded by backslash (continuation
6816 # line).
6817 my $paragraph = $_;
6818 /^(.*?)(?:(?<!\\)\n(\t.*))?$/s;
6819 my ($relationship, $actions) = ($1, $2 || '');
6821 # Separate targets from dependencies: the first colon.
6822 $relationship =~ /^([^:]+\S+) *: *(.*)$/som;
6823 my ($targets, $dependencies) = ($1, $2);
6824 # Remove the escaped new lines.
6825 # I don't know why, but I have to use a tmp $flat_deps.
6826 my $flat_deps = &flatten ($dependencies);
6827 my @deps = split (' ', $flat_deps);
6829 foreach (split (' ', $targets))
6830 {
6831 # FIXME: 1. We are not robust to people defining several targets
6832 # at once, only some of them being in %dependencies. The
6833 # actions from the targets in %dependencies are usually generated
6834 # from the content of %actions, but if some targets in $targets
6835 # are not in %dependencies the ELSE branch will output
6836 # a rule for all $targets (i.e. the targets which are both
6837 # in %dependencies and $targets will have two rules).
6839 # FIXME: 2. The logic here is not able to output a
6840 # multi-paragraph rule several time (e.g. for each condition
6841 # it is defined for) because it only knows the first paragraph.
6843 # FIXME: 3. We are not robust to people defining a subset
6844 # of a previously defined "multiple-target" rule. E.g.
6845 # `foo:' after `foo bar:'.
6847 # Output only if not in FALSE.
6848 if (defined $dependencies{$_} && $cond != FALSE)
6849 {
6850 &depend ($_, @deps);
6851 register_action ($_, $actions);
6852 }
6853 else
6854 {
6855 # Free-lance dependency. Output the rule for all the
6856 # targets instead of one by one.
6857 my @undefined_conds =
6858 Automake::Rule::define ($targets, $file,
6859 $is_am ? RULE_AUTOMAKE : RULE_USER,
6860 $cond, $where);
6861 for my $undefined_cond (@undefined_conds)
6862 {
6863 my $condparagraph = $paragraph;
6864 $condparagraph =~ s/^/$undefined_cond->subst_string/gme;
6865 $result_rules .= "$spacing$comment$condparagraph\n";
6866 }
6867 if (scalar @undefined_conds == 0)
6868 {
6869 # Remember to discard next paragraphs
6870 # if they belong to this rule.
6871 # (but see also FIXME: #2 above.)
6872 $discard_rule = 1;
6873 }
6874 $comment = $spacing = '';
6875 last;
6876 }
6877 }
6878 }
6880 elsif (/$ASSIGNMENT_PATTERN/mso)
6881 {
6882 my ($var, $type, $val) = ($1, $2, $3);
6883 error $where, "variable `$var' with trailing backslash"
6884 if /\\$/;
6886 $is_rule = 0;
6888 Automake::Variable::define ($var,
6889 $is_am ? VAR_AUTOMAKE : VAR_MAKEFILE,
6890 $type, $cond, $val, $comment, $where,
6891 VAR_ASIS)
6892 if $cond != FALSE;
6894 $comment = $spacing = '';
6895 }
6896 else
6897 {
6898 # This isn't an error; it is probably some tokens which
6899 # configure is supposed to replace, such as `@SET-MAKE@',
6900 # or some part of a rule cut by an if/endif.
6901 if (! $cond->false && ! ($is_rule && $discard_rule))
6902 {
6903 s/^/$cond->subst_string/gme;
6904 $result_rules .= "$spacing$comment$_\n";
6905 }
6906 $comment = $spacing = '';
6907 }
6908 }
6910 error ($where, @cond_stack ?
6911 "unterminated conditionals: @cond_stack" :
6912 "too many conditionals closed in include file")
6913 if "@saved_cond_stack" ne "@cond_stack";
6915 return ($comment, $result_vars, $result_rules);
6916 }
6919 # $CONTENTS
6920 # &file_contents ($BASENAME, $WHERE, [%TRANSFORM])
6921 # ------------------------------------------------
6922 # Return contents of a file from $libdir/am, automatically skipping
6923 # macros or rules which are already known.
6924 sub file_contents ($$%)
6925 {
6926 my ($basename, $where, %transform) = @_;
6927 my ($comments, $variables, $rules) =
6928 file_contents_internal (1, "$libdir/am/$basename.am", $where,
6929 %transform);
6930 return "$comments$variables$rules";
6931 }
6934 # @PREFIX
6935 # &am_primary_prefixes ($PRIMARY, $CAN_DIST, @PREFIXES)
6936 # -----------------------------------------------------
6937 # Find all variable prefixes that are used for install directories. A
6938 # prefix `zar' qualifies iff:
6939 #
6940 # * `zardir' is a variable.
6941 # * `zar_PRIMARY' is a variable.
6942 #
6943 # As a side effect, it looks for misspellings. It is an error to have
6944 # a variable ending in a "reserved" suffix whose prefix is unknown, e.g.
6945 # "bni_PROGRAMS". However, unusual prefixes are allowed if a variable
6946 # of the same name (with "dir" appended) exists. For instance, if the
6947 # variable "zardir" is defined, then "zar_PROGRAMS" becomes valid.
6948 # This is to provide a little extra flexibility in those cases which
6949 # need it.
6950 sub am_primary_prefixes ($$@)
6951 {
6952 my ($primary, $can_dist, @prefixes) = @_;
6954 local $_;
6955 my %valid = map { $_ => 0 } @prefixes;
6956 $valid{'EXTRA'} = 0;
6957 foreach my $var (variables $primary)
6958 {
6959 # Automake is allowed to define variables that look like primaries
6960 # but which aren't. E.g. INSTALL_sh_DATA.
6961 # Autoconf can also define variables like INSTALL_DATA, so
6962 # ignore all configure variables (at least those which are not
6963 # redefined in Makefile.am).
6964 # FIXME: We should make sure that these variables are not
6965 # conditionally defined (or else adjust the condition below).
6966 my $def = $var->def (TRUE);
6967 next if $def && $def->owner != VAR_MAKEFILE;
6969 my $varname = $var->name;
6971 if ($varname =~ /^(nobase_)?(dist_|nodist_)?(.*)_[[:alnum:]]+$/)
6972 {
6973 my ($base, $dist, $X) = ($1 || '', $2 || '', $3 || '');
6974 if ($dist ne '' && ! $can_dist)
6975 {
6976 err_var ($var,
6977 "invalid variable `$varname': `dist' is forbidden");
6978 }
6979 # Standard directories must be explicitly allowed.
6980 elsif (! defined $valid{$X} && exists $standard_prefix{$X})
6981 {
6982 err_var ($var,
6983 "`${X}dir' is not a legitimate directory " .
6984 "for `$primary'");
6985 }
6986 # A not explicitly valid directory is allowed if Xdir is defined.
6987 elsif (! defined $valid{$X} &&
6988 $var->requires_variables ("`$varname' is used", "${X}dir"))
6989 {
6990 # Nothing to do. Any error message has been output
6991 # by $var->requires_variables.
6992 }
6993 else
6994 {
6995 # Ensure all extended prefixes are actually used.
6996 $valid{"$base$dist$X"} = 1;
6997 }
6998 }
6999 else
7000 {
7001 prog_error "unexpected variable name: $varname";
7002 }
7003 }
7005 # Return only those which are actually defined.
7006 return sort grep { var ($_ . '_' . $primary) } keys %valid;
7007 }
7010 # Handle `where_HOW' variable magic. Does all lookups, generates
7011 # install code, and possibly generates code to define the primary
7012 # variable. The first argument is the name of the .am file to munge,
7013 # the second argument is the primary variable (e.g. HEADERS), and all
7014 # subsequent arguments are possible installation locations.
7015 #
7016 # Returns list of [$location, $value] pairs, where
7017 # $value's are the values in all where_HOW variable, and $location
7018 # there associated location (the place here their parent variables were
7019 # defined).
7020 #
7021 # FIXME: this should be rewritten to be cleaner. It should be broken
7022 # up into multiple functions.
7023 #
7024 # Usage is: am_install_var (OPTION..., file, HOW, where...)
7025 sub am_install_var
7026 {
7027 my (@args) = @_;
7029 my $do_require = 1;
7030 my $can_dist = 0;
7031 my $default_dist = 0;
7032 while (@args)
7033 {
7034 if ($args[0] eq '-noextra')
7035 {
7036 $do_require = 0;
7037 }
7038 elsif ($args[0] eq '-candist')
7039 {
7040 $can_dist = 1;
7041 }
7042 elsif ($args[0] eq '-defaultdist')
7043 {
7044 $default_dist = 1;
7045 $can_dist = 1;
7046 }
7047 elsif ($args[0] !~ /^-/)
7048 {
7049 last;
7050 }
7051 shift (@args);
7052 }
7054 my ($file, $primary, @prefix) = @args;
7056 # Now that configure substitutions are allowed in where_HOW
7057 # variables, it is an error to actually define the primary. We
7058 # allow `JAVA', as it is customarily used to mean the Java
7059 # interpreter. This is but one of several Java hacks. Similarly,
7060 # `PYTHON' is customarily used to mean the Python interpreter.
7061 reject_var $primary, "`$primary' is an anachronism"
7062 unless $primary eq 'JAVA' || $primary eq 'PYTHON';
7064 # Get the prefixes which are valid and actually used.
7065 @prefix = am_primary_prefixes ($primary, $can_dist, @prefix);
7067 # If a primary includes a configure substitution, then the EXTRA_
7068 # form is required. Otherwise we can't properly do our job.
7069 my $require_extra;
7071 my @used = ();
7072 my @result = ();
7074 foreach my $X (@prefix)
7075 {
7076 my $nodir_name = $X;
7077 my $one_name = $X . '_' . $primary;
7078 my $one_var = var $one_name;
7080 my $strip_subdir = 1;
7081 # If subdir prefix should be preserved, do so.
7082 if ($nodir_name =~ /^nobase_/)
7083 {
7084 $strip_subdir = 0;
7085 $nodir_name =~ s/^nobase_//;
7086 }
7088 # If files should be distributed, do so.
7089 my $dist_p = 0;
7090 if ($can_dist)
7091 {
7092 $dist_p = (($default_dist && $nodir_name !~ /^nodist_/)
7093 || (! $default_dist && $nodir_name =~ /^dist_/));
7094 $nodir_name =~ s/^(dist|nodist)_//;
7095 }
7098 # Use the location of the currently processed variable.
7099 # We are not processing a particular condition, so pick the first
7100 # available.
7101 my $tmpcond = $one_var->conditions->one_cond;
7102 my $where = $one_var->rdef ($tmpcond)->location->clone;
7104 # Append actual contents of where_PRIMARY variable to
7105 # @result, skipping @substitutions@.
7106 foreach my $locvals ($one_var->value_as_list_recursive (location => 1))
7107 {
7108 my ($loc, $value) = @$locvals;
7109 # Skip configure substitutions.
7110 if ($value =~ /^\@.*\@$/)
7111 {
7112 if ($nodir_name eq 'EXTRA')
7113 {
7114 error ($where,
7115 "`$one_name' contains configure substitution, "
7116 . "but shouldn't");
7117 }
7118 # Check here to make sure variables defined in
7119 # configure.ac do not imply that EXTRA_PRIMARY
7120 # must be defined.
7121 elsif (! defined $configure_vars{$one_name})
7122 {
7123 $require_extra = $one_name
7124 if $do_require;
7125 }
7126 }
7127 else
7128 {
7129 push (@result, $locvals);
7130 }
7131 }
7132 # A blatant hack: we rewrite each _PROGRAMS primary to include
7133 # EXEEXT.
7134 append_exeext { 1 } $one_name
7135 if $primary eq 'PROGRAMS';
7136 # "EXTRA" shouldn't be used when generating clean targets,
7137 # all, or install targets. We used to warn if EXTRA_FOO was
7138 # defined uselessly, but this was annoying.
7139 next
7140 if $nodir_name eq 'EXTRA';
7142 if ($nodir_name eq 'check')
7143 {
7144 push (@check, '$(' . $one_name . ')');
7145 }
7146 else
7147 {
7148 push (@used, '$(' . $one_name . ')');
7149 }
7151 # Is this to be installed?
7152 my $install_p = $nodir_name ne 'noinst' && $nodir_name ne 'check';
7154 # If so, with install-exec? (or install-data?).
7155 my $exec_p = ($nodir_name =~ /$EXEC_DIR_PATTERN/o);
7157 my $check_options_p = $install_p && !! option 'std-options';
7159 # Use the location of the currently processed variable as context.
7160 $where->push_context ("while processing `$one_name'");
7162 # The variable containing all files to distribute.
7163 my $distvar = "\$($one_name)";
7164 $distvar = shadow_unconditionally ($one_name, $where)
7165 if ($dist_p && $one_var->has_conditional_contents);
7167 # Singular form of $PRIMARY.
7168 (my $one_primary = $primary) =~ s/S$//;
7169 $output_rules .= &file_contents ($file, $where,
7170 PRIMARY => $primary,
7171 ONE_PRIMARY => $one_primary,
7172 DIR => $X,
7173 NDIR => $nodir_name,
7174 BASE => $strip_subdir,
7176 EXEC => $exec_p,
7177 INSTALL => $install_p,
7178 DIST => $dist_p,
7179 DISTVAR => $distvar,
7180 'CK-OPTS' => $check_options_p);
7181 }
7183 # The JAVA variable is used as the name of the Java interpreter.
7184 # The PYTHON variable is used as the name of the Python interpreter.
7185 if (@used && $primary ne 'JAVA' && $primary ne 'PYTHON')
7186 {
7187 # Define it.
7188 define_pretty_variable ($primary, TRUE, INTERNAL, @used);
7189 $output_vars .= "\n";
7190 }
7192 err_var ($require_extra,
7193 "`$require_extra' contains configure substitution,\n"
7194 . "but `EXTRA_$primary' not defined")
7195 if ($require_extra && ! var ('EXTRA_' . $primary));
7197 # Push here because PRIMARY might be configure time determined.
7198 push (@all, '$(' . $primary . ')')
7199 if @used && $primary ne 'JAVA' && $primary ne 'PYTHON';
7201 # Make the result unique. This lets the user use conditionals in
7202 # a natural way, but still lets us program lazily -- we don't have
7203 # to worry about handling a particular object more than once.
7204 # We will keep only one location per object.
7205 my %result = ();
7206 for my $pair (@result)
7207 {
7208 my ($loc, $val) = @$pair;
7209 $result{$val} = $loc;
7210 }
7211 my @l = sort keys %result;
7212 return map { [$result{$_}->clone, $_] } @l;
7213 }
7216 ################################################################
7218 # Each key in this hash is the name of a directory holding a
7219 # Makefile.in. These variables are local to `is_make_dir'.
7220 my %make_dirs = ();
7221 my $make_dirs_set = 0;
7223 sub is_make_dir
7224 {
7225 my ($dir) = @_;
7226 if (! $make_dirs_set)
7227 {
7228 foreach my $iter (@configure_input_files)
7229 {
7230 $make_dirs{dirname ($iter)} = 1;
7231 }
7232 # We also want to notice Makefile.in's.
7233 foreach my $iter (@other_input_files)
7234 {
7235 if ($iter =~ /Makefile\.in$/)
7236 {
7237 $make_dirs{dirname ($iter)} = 1;
7238 }
7239 }
7240 $make_dirs_set = 1;
7241 }
7242 return defined $make_dirs{$dir};
7243 }
7245 ################################################################
7247 # Find the aux dir. This should match the algorithm used by
7248 # ./configure. (See the Autoconf documentation for for
7249 # AC_CONFIG_AUX_DIR.)
7250 sub locate_aux_dir ()
7251 {
7252 if (! $config_aux_dir_set_in_configure_ac)
7253 {
7254 # The default auxiliary directory is the first
7255 # of ., .., or ../.. that contains install-sh.
7256 # Assume . if install-sh doesn't exist yet.
7257 for my $dir (qw (. .. ../..))
7258 {
7259 if (-f "$dir/install-sh")
7260 {
7261 $config_aux_dir = $dir;
7262 last;
7263 }
7264 }
7265 $config_aux_dir = '.' unless $config_aux_dir;
7266 }
7267 # Avoid unsightly '/.'s.
7268 $am_config_aux_dir =
7269 '$(top_srcdir)' . ($config_aux_dir eq '.' ? "" : "/$config_aux_dir");
7270 $am_config_aux_dir =~ s,/*$,,;
7271 }
7274 # &maybe_push_required_file ($DIR, $FILE, $FULLFILE)
7275 # --------------------------------------------------
7276 # See if we want to push this file onto dist_common. This function
7277 # encodes the rules for deciding when to do so.
7278 sub maybe_push_required_file
7279 {
7280 my ($dir, $file, $fullfile) = @_;
7282 if ($dir eq $relative_dir)
7283 {
7284 push_dist_common ($file);
7285 return 1;
7286 }
7287 elsif ($relative_dir eq '.' && ! &is_make_dir ($dir))
7288 {
7289 # If we are doing the topmost directory, and the file is in a
7290 # subdir which does not have a Makefile, then we distribute it
7291 # here.
7293 # If a required file is above the source tree, it is important
7294 # to prefix it with `$(srcdir)' so that no VPATH search is
7295 # performed. Otherwise problems occur with Make implementations
7296 # that rewrite and simplify rules whose dependencies are found in a
7297 # VPATH location. Here is an example with OSF1/Tru64 Make.
7298 #
7299 # % cat Makefile
7300 # VPATH = sub
7301 # distdir: ../a
7302 # echo ../a
7303 # % ls
7304 # Makefile a
7305 # % make
7306 # echo a
7307 # a
7308 #
7309 # Dependency `../a' was found in `sub/../a', but this make
7310 # implementation simplified it as `a'. (Note that the sub/
7311 # directory does not even exist.)
7312 #
7313 # This kind of VPATH rewriting seems hard to cancel. The
7314 # distdir.am hack against VPATH rewriting works only when no
7315 # simplification is done, i.e., for dependencies which are in
7316 # subdirectories, not in enclosing directories. Hence, in
7317 # the latter case we use a full path to make sure no VPATH
7318 # search occurs.
7319 $fullfile = '$(srcdir)/' . $fullfile
7320 if $dir =~ m,^\.\.(?:$|/),;
7322 push_dist_common ($fullfile);
7323 return 1;
7324 }
7325 return 0;
7326 }
7329 # If a file name appears as a key in this hash, then it has already
7330 # been checked for. This allows us not to report the same error more
7331 # than once.
7332 my %required_file_not_found = ();
7334 # &require_file_internal ($WHERE, $MYSTRICT, $DIRECTORY, @FILES)
7335 # --------------------------------------------------------------
7336 # Verify that the file must exist in $DIRECTORY, or install it.
7337 # $MYSTRICT is the strictness level at which this file becomes required.
7338 sub require_file_internal ($$$@)
7339 {
7340 my ($where, $mystrict, $dir, @files) = @_;
7342 foreach my $file (@files)
7343 {
7344 my $fullfile = "$dir/$file";
7345 my $found_it = 0;
7346 my $dangling_sym = 0;
7348 if (-l $fullfile && ! -f $fullfile)
7349 {
7350 $dangling_sym = 1;
7351 }
7352 elsif (dir_has_case_matching_file ($dir, $file))
7353 {
7354 $found_it = 1;
7355 maybe_push_required_file ($dir, $file, $fullfile);
7356 }
7358 # `--force-missing' only has an effect if `--add-missing' is
7359 # specified.
7360 if ($found_it && (! $add_missing || ! $force_missing))
7361 {
7362 next;
7363 }
7364 else
7365 {
7366 # If we've already looked for it, we're done. You might
7367 # wonder why we don't do this before searching for the
7368 # file. If we do that, then something like
7369 # AC_OUTPUT(subdir/foo foo) will fail to put foo.in into
7370 # DIST_COMMON.
7371 if (! $found_it)
7372 {
7373 next if defined $required_file_not_found{$fullfile};
7374 $required_file_not_found{$fullfile} = 1;
7375 }
7377 if ($strictness >= $mystrict)
7378 {
7379 if ($dangling_sym && $add_missing)
7380 {
7381 unlink ($fullfile);
7382 }
7384 my $trailer = '';
7385 my $trailer2 = '';
7386 my $suppress = 0;
7388 # Only install missing files according to our desired
7389 # strictness level.
7390 my $message = "required file `$fullfile' not found";
7391 if ($add_missing)
7392 {
7393 if (-f "$libdir/$file")
7394 {
7395 $suppress = 1;
7397 # Install the missing file. Symlink if we
7398 # can, copy if we must. Note: delete the file
7399 # first, in case it is a dangling symlink.
7400 $message = "installing `$fullfile'";
7402 # The license file should not be volatile.
7403 if ($file eq "COPYING")
7404 {
7405 $message .= " using GNU General Public License v3 file";
7406 $trailer2 = "\n Consider adding the COPYING file"
7407 . " to the version control system"
7408 . "\n for your code, to avoid questions"
7409 . " about which license your project uses.";
7410 }
7412 # Windows Perl will hang if we try to delete a
7413 # file that doesn't exist.
7414 unlink ($fullfile) if -f $fullfile;
7415 if ($symlink_exists && ! $copy_missing)
7416 {
7417 if (! symlink ("$libdir/$file", $fullfile))
7418 {
7419 $suppress = 0;
7420 $trailer = "; error while making link: $!";
7421 }
7422 }
7423 elsif (system ('cp', "$libdir/$file", $fullfile))
7424 {
7425 $suppress = 0;
7426 $trailer = "\n error while copying";
7427 }
7428 set_dir_cache_file ($dir, $file);
7429 }
7431 if (! maybe_push_required_file (dirname ($fullfile),
7432 $file, $fullfile))
7433 {
7434 if (! $found_it && ! $automake_will_process_aux_dir)
7435 {
7436 # We have added the file but could not push it
7437 # into DIST_COMMON, probably because this is
7438 # an auxiliary file and we are not processing
7439 # the top level Makefile. Furthermore Automake
7440 # hasn't been asked to create the Makefile.in
7441 # that distributes the aux dir files.
7442 error ($where, 'Please make a full run of automake'
7443 . " so $fullfile gets distributed.");
7444 }
7445 }
7446 }
7447 else
7448 {
7449 $trailer = "\n `automake --add-missing' can install `$file'"
7450 if -f "$libdir/$file";
7451 }
7453 # If --force-missing was specified, and we have
7454 # actually found the file, then do nothing.
7455 next
7456 if $found_it && $force_missing;
7458 # If we couldn't install the file, but it is a target in
7459 # the Makefile, don't print anything. This allows files
7460 # like README, AUTHORS, or THANKS to be generated.
7461 next
7462 if !$suppress && rule $file;
7464 msg ($suppress ? 'note' : 'error', $where, "$message$trailer$trailer2");
7465 }
7466 }
7467 }
7468 }
7470 # &require_file ($WHERE, $MYSTRICT, @FILES)
7471 # -----------------------------------------
7472 sub require_file ($$@)
7473 {
7474 my ($where, $mystrict, @files) = @_;
7475 require_file_internal ($where, $mystrict, $relative_dir, @files);
7476 }
7478 # &require_file_with_macro ($COND, $MACRO, $MYSTRICT, @FILES)
7479 # -----------------------------------------------------------
7480 sub require_file_with_macro ($$$@)
7481 {
7482 my ($cond, $macro, $mystrict, @files) = @_;
7483 $macro = rvar ($macro) unless ref $macro;
7484 require_file ($macro->rdef ($cond)->location, $mystrict, @files);
7485 }
7487 # &require_libsource_with_macro ($COND, $MACRO, $MYSTRICT, @FILES)
7488 # ----------------------------------------------------------------
7489 # Require an AC_LIBSOURCEd file. If AC_CONFIG_LIBOBJ_DIR was called, it
7490 # must be in that directory. Otherwise expect it in the current directory.
7491 sub require_libsource_with_macro ($$$@)
7492 {
7493 my ($cond, $macro, $mystrict, @files) = @_;
7494 $macro = rvar ($macro) unless ref $macro;
7495 if ($config_libobj_dir)
7496 {
7497 require_file_internal ($macro->rdef ($cond)->location, $mystrict,
7498 $config_libobj_dir, @files);
7499 }
7500 else
7501 {
7502 require_file ($macro->rdef ($cond)->location, $mystrict, @files);
7503 }
7504 }
7506 # Queue to push require_conf_file requirements to.
7507 my $required_conf_file_queue;
7509 # &queue_required_conf_file ($QUEUE, $KEY, $DIR, $WHERE, $MYSTRICT, @FILES)
7510 # -------------------------------------------------------------------------
7511 sub queue_required_conf_file ($$$$@)
7512 {
7513 my ($queue, $key, $dir, $where, $mystrict, @files) = @_;
7514 my @serial_loc;
7515 if (ref $where)
7516 {
7517 @serial_loc = (QUEUE_LOCATION, $where->serialize ());
7518 }
7519 else
7520 {
7521 @serial_loc = (QUEUE_STRING, $where);
7522 }
7523 $queue->enqueue ($key, $dir, @serial_loc, $mystrict, 0 + @files, @files);
7524 }
7526 # &require_queued_conf_file ($QUEUE)
7527 # ----------------------------------
7528 sub require_queued_conf_file ($)
7529 {
7530 my ($queue) = @_;
7531 my $where;
7532 my $dir = $queue->dequeue ();
7533 my $loc_key = $queue->dequeue ();
7534 if ($loc_key eq QUEUE_LOCATION)
7535 {
7536 $where = Automake::Location::deserialize ($queue);
7537 }
7538 elsif ($loc_key eq QUEUE_STRING)
7539 {
7540 $where = $queue->dequeue ();
7541 }
7542 else
7543 {
7544 prog_error "unexpected key $loc_key";
7545 }
7546 my $mystrict = $queue->dequeue ();
7547 my $nfiles = $queue->dequeue ();
7548 my @files;
7549 push @files, $queue->dequeue ()
7550 foreach (1 .. $nfiles);
7552 # Dequeuing happens outside of per-makefile context, so we have to
7553 # set the variables used by require_file_internal and the functions
7554 # it calls. Gross!
7555 $relative_dir = $dir;
7556 require_file_internal ($where, $mystrict, $config_aux_dir, @files);
7557 }
7559 # &require_conf_file ($WHERE, $MYSTRICT, @FILES)
7560 # ----------------------------------------------
7561 # Looks in configuration path, as specified by AC_CONFIG_AUX_DIR;
7562 # worker threads may queue up the action to be serialized by the master.
7563 #
7564 # FIXME: this seriously relies on the semantics of require_file_internal
7565 # and maybe_push_required_file, in that we exploit the fact that only the
7566 # contents of the last handled output file may be impacted (which in turn
7567 # is dealt with by the master thread).
7568 sub require_conf_file ($$@)
7569 {
7570 my ($where, $mystrict, @files) = @_;
7571 if (defined $required_conf_file_queue)
7572 {
7573 queue_required_conf_file ($required_conf_file_queue, QUEUE_CONF_FILE,
7574 $relative_dir, $where, $mystrict, @files);
7575 }
7576 else
7577 {
7578 require_file_internal ($where, $mystrict, $config_aux_dir, @files);
7579 }
7580 }
7583 # &require_conf_file_with_macro ($COND, $MACRO, $MYSTRICT, @FILES)
7584 # ----------------------------------------------------------------
7585 sub require_conf_file_with_macro ($$$@)
7586 {
7587 my ($cond, $macro, $mystrict, @files) = @_;
7588 require_conf_file (rvar ($macro)->rdef ($cond)->location,
7589 $mystrict, @files);
7590 }
7592 ################################################################
7594 # &require_build_directory ($DIRECTORY)
7595 # ------------------------------------
7596 # Emit rules to create $DIRECTORY if needed, and return
7597 # the file that any target requiring this directory should be made
7598 # dependent upon.
7599 # We don't want to emit the rule twice, and want to reuse it
7600 # for directories with equivalent names (e.g., `foo/bar' and `./foo//bar').
7601 sub require_build_directory ($)
7602 {
7603 my $directory = shift;
7605 return $directory_map{$directory} if exists $directory_map{$directory};
7607 my $cdir = File::Spec->canonpath ($directory);
7609 if (exists $directory_map{$cdir})
7610 {
7611 my $stamp = $directory_map{$cdir};
7612 $directory_map{$directory} = $stamp;
7613 return $stamp;
7614 }
7616 my $dirstamp = "$cdir/\$(am__dirstamp)";
7618 $directory_map{$directory} = $dirstamp;
7619 $directory_map{$cdir} = $dirstamp;
7621 # Set a variable for the dirstamp basename.
7622 define_pretty_variable ('am__dirstamp', TRUE, INTERNAL,
7623 '$(am__leading_dot)dirstamp');
7625 # Directory must be removed by `make distclean'.
7626 $clean_files{$dirstamp} = DIST_CLEAN;
7628 $output_rules .= ("$dirstamp:\n"
7629 . "\t\@\$(MKDIR_P) $directory\n"
7630 . "\t\@: > $dirstamp\n");
7632 return $dirstamp;
7633 }
7635 # &require_build_directory_maybe ($FILE)
7636 # --------------------------------------
7637 # If $FILE lies in a subdirectory, emit a rule to create this
7638 # directory and return the file that $FILE should be made
7639 # dependent upon. Otherwise, just return the empty string.
7640 sub require_build_directory_maybe ($)
7641 {
7642 my $file = shift;
7643 my $directory = dirname ($file);
7645 if ($directory ne '.')
7646 {
7647 return require_build_directory ($directory);
7648 }
7649 else
7650 {
7651 return '';
7652 }
7653 }
7655 ################################################################
7657 # Push a list of files onto dist_common.
7658 sub push_dist_common
7659 {
7660 prog_error "push_dist_common run after handle_dist"
7661 if $handle_dist_run;
7662 Automake::Variable::define ('DIST_COMMON', VAR_AUTOMAKE, '+', TRUE, "@_",
7663 '', INTERNAL, VAR_PRETTY);
7664 }
7667 ################################################################
7669 # generate_makefile ($MAKEFILE_AM, $MAKEFILE_IN)
7670 # ----------------------------------------------
7671 # Generate a Makefile.in given the name of the corresponding Makefile and
7672 # the name of the file output by config.status.
7673 sub generate_makefile ($$)
7674 {
7675 my ($makefile_am, $makefile_in) = @_;
7677 # Reset all the Makefile.am related variables.
7678 initialize_per_input;
7680 # AUTOMAKE_OPTIONS can contains -W flags to disable or enable
7681 # warnings for this file. So hold any warning issued before
7682 # we have processed AUTOMAKE_OPTIONS.
7683 buffer_messages ('warning');
7685 # Name of input file ("Makefile.am") and output file
7686 # ("Makefile.in"). These have no directory components.
7687 $am_file_name = basename ($makefile_am);
7688 $in_file_name = basename ($makefile_in);
7690 # $OUTPUT is encoded. If it contains a ":" then the first element
7691 # is the real output file, and all remaining elements are input
7692 # files. We don't scan or otherwise deal with these input files,
7693 # other than to mark them as dependencies. See
7694 # &scan_autoconf_files for details.
7695 my ($makefile, @inputs) = split (/:/, $output_files{$makefile_in});
7697 $relative_dir = dirname ($makefile);
7698 $am_relative_dir = dirname ($makefile_am);
7699 $topsrcdir = backname ($relative_dir);
7701 read_main_am_file ($makefile_am);
7702 if (handle_options)
7703 {
7704 # Process buffered warnings.
7705 flush_messages;
7706 # Fatal error. Just return, so we can continue with next file.
7707 return;
7708 }
7709 # Process buffered warnings.
7710 flush_messages;
7712 # There are a few install-related variables that you should not define.
7713 foreach my $var ('PRE_INSTALL', 'POST_INSTALL', 'NORMAL_INSTALL')
7714 {
7715 my $v = var $var;
7716 if ($v)
7717 {
7718 my $def = $v->def (TRUE);
7719 prog_error "$var not defined in condition TRUE"
7720 unless $def;
7721 reject_var $var, "`$var' should not be defined"
7722 if $def->owner != VAR_AUTOMAKE;
7723 }
7724 }
7726 # Catch some obsolete variables.
7727 msg_var ('obsolete', 'INCLUDES',
7728 "`INCLUDES' is the old name for `AM_CPPFLAGS' (or `*_CPPFLAGS')")
7729 if var ('INCLUDES');
7731 # Must do this after reading .am file.
7732 define_variable ('subdir', $relative_dir, INTERNAL);
7734 # If DIST_SUBDIRS is defined, make sure SUBDIRS is, so that
7735 # recursive rules are enabled.
7736 define_pretty_variable ('SUBDIRS', TRUE, INTERNAL, '')
7737 if var 'DIST_SUBDIRS' && ! var 'SUBDIRS';
7739 # Check first, because we might modify some state.
7740 check_cygnus;
7741 check_gnu_standards;
7742 check_gnits_standards;
7744 handle_configure ($makefile_am, $makefile_in, $makefile, @inputs);
7745 handle_gettext;
7746 handle_libraries;
7747 handle_ltlibraries;
7748 handle_programs;
7749 handle_scripts;
7751 # These must be run after all the sources are scanned. They
7752 # use variables defined by &handle_libraries, &handle_ltlibraries,
7753 # or &handle_programs.
7754 handle_compile;
7755 handle_languages;
7756 handle_libtool;
7758 # Variables used by distdir.am and tags.am.
7759 define_pretty_variable ('SOURCES', TRUE, INTERNAL, @sources);
7760 if (! option 'no-dist')
7761 {
7762 define_pretty_variable ('DIST_SOURCES', TRUE, INTERNAL, @dist_sources);
7763 }
7765 handle_multilib;
7766 handle_texinfo;
7767 handle_emacs_lisp;
7768 handle_python;
7769 handle_java;
7770 handle_man_pages;
7771 handle_data;
7772 handle_headers;
7773 handle_subdirs;
7774 handle_tags;
7775 handle_minor_options;
7776 # Must come after handle_programs so that %known_programs is up-to-date.
7777 handle_tests;
7779 # This must come after most other rules.
7780 handle_dist;
7782 handle_footer;
7783 do_check_merge_target;
7784 handle_all ($makefile);
7786 # FIXME: Gross!
7787 if (var ('lib_LTLIBRARIES') && var ('bin_PROGRAMS'))
7788 {
7789 $output_rules .= "install-binPROGRAMS: install-libLTLIBRARIES\n\n";
7790 }
7791 if (var ('nobase_lib_LTLIBRARIES') && var ('bin_PROGRAMS'))
7792 {
7793 $output_rules .= "install-binPROGRAMS: install-nobase_libLTLIBRARIES\n\n";
7794 }
7796 handle_install;
7797 handle_clean ($makefile);
7798 handle_factored_dependencies;
7800 # Comes last, because all the above procedures may have
7801 # defined or overridden variables.
7802 $output_vars .= output_variables;
7804 check_typos;
7806 my ($out_file) = $output_directory . '/' . $makefile_in;
7808 if ($exit_code != 0)
7809 {
7810 verb "not writing $out_file because of earlier errors";
7811 return;
7812 }
7814 if (! -d ($output_directory . '/' . $am_relative_dir))
7815 {
7816 mkdir ($output_directory . '/' . $am_relative_dir, 0755);
7817 }
7819 # We make sure that `all:' is the first target.
7820 my $output =
7821 "$output_vars$output_all$output_header$output_rules$output_trailer";
7823 # Decide whether we must update the output file or not.
7824 # We have to update in the following situations.
7825 # * $force_generation is set.
7826 # * any of the output dependencies is younger than the output
7827 # * the contents of the output is different (this can happen
7828 # if the project has been populated with a file listed in
7829 # @common_files since the last run).
7830 # Output's dependencies are split in two sets:
7831 # * dependencies which are also configure dependencies
7832 # These do not change between each Makefile.am
7833 # * other dependencies, specific to the Makefile.am being processed
7834 # (such as the Makefile.am itself, or any Makefile fragment
7835 # it includes).
7836 my $timestamp = mtime $out_file;
7837 if (! $force_generation
7838 && $configure_deps_greatest_timestamp < $timestamp
7839 && $output_deps_greatest_timestamp < $timestamp
7840 && $output eq contents ($out_file))
7841 {
7842 verb "$out_file unchanged";
7843 # No need to update.
7844 return;
7845 }
7847 if (-e $out_file)
7848 {
7849 unlink ($out_file)
7850 or fatal "cannot remove $out_file: $!\n";
7851 }
7853 my $gm_file = new Automake::XFile "> $out_file";
7854 verb "creating $out_file";
7855 print $gm_file $output;
7856 }
7858 ################################################################
7863 ################################################################
7865 # Print usage information.
7866 sub usage ()
7867 {
7868 print "Usage: $0 [OPTION] ... [Makefile]...
7870 Generate Makefile.in for configure from Makefile.am.
7872 Operation modes:
7873 --help print this help, then exit
7874 --version print version number, then exit
7875 -v, --verbose verbosely list files processed
7876 --no-force only update Makefile.in's that are out of date
7877 -W, --warnings=CATEGORY report the warnings falling in CATEGORY
7879 Dependency tracking:
7880 -i, --ignore-deps disable dependency tracking code
7881 --include-deps enable dependency tracking code
7883 Flavors:
7884 --cygnus assume program is part of Cygnus-style tree
7885 --foreign set strictness to foreign
7886 --gnits set strictness to gnits
7887 --gnu set strictness to gnu
7889 Library files:
7890 -a, --add-missing add missing standard files to package
7891 --libdir=DIR directory storing library files
7892 -c, --copy with -a, copy missing files (default is symlink)
7893 -f, --force-missing force update of standard files
7895 ";
7896 Automake::ChannelDefs::usage;
7898 my ($last, @lcomm);
7899 $last = '';
7900 foreach my $iter (sort ((@common_files, @common_sometimes)))
7901 {
7902 push (@lcomm, $iter) unless $iter eq $last;
7903 $last = $iter;
7904 }
7906 my @four;
7907 print "\nFiles which are automatically distributed, if found:\n";
7908 format USAGE_FORMAT =
7909 @<<<<<<<<<<<<<<<< @<<<<<<<<<<<<<<<< @<<<<<<<<<<<<<<<< @<<<<<<<<<<<<<<<<
7910 $four[0], $four[1], $four[2], $four[3]
7911 .
7912 $~ = "USAGE_FORMAT";
7914 my $cols = 4;
7915 my $rows = int(@lcomm / $cols);
7916 my $rest = @lcomm % $cols;
7918 if ($rest)
7919 {
7920 $rows++;
7921 }
7922 else
7923 {
7924 $rest = $cols;
7925 }
7927 for (my $y = 0; $y < $rows; $y++)
7928 {
7929 @four = ("", "", "", "");
7930 for (my $x = 0; $x < $cols; $x++)
7931 {
7932 last if $y + 1 == $rows && $x == $rest;
7934 my $idx = (($x > $rest)
7935 ? ($rows * $rest + ($rows - 1) * ($x - $rest))
7936 : ($rows * $x));
7938 $idx += $y;
7939 $four[$x] = $lcomm[$idx];
7940 }
7941 write;
7942 }
7944 print "\nReport bugs to <bug-automake\@gnu.org>.\n";
7946 # --help always returns 0 per GNU standards.
7947 exit 0;
7948 }
7951 # &version ()
7952 # -----------
7953 # Print version information
7954 sub version ()
7955 {
7956 print <<EOF;
7957 automake (GNU $PACKAGE) $VERSION
7958 Copyright (C) 2008 Free Software Foundation, Inc.
7959 License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html>
7960 This is free software: you are free to change and redistribute it.
7961 There is NO WARRANTY, to the extent permitted by law.
7963 Written by Tom Tromey <tromey\@redhat.com>
7964 and Alexandre Duret-Lutz <adl\@gnu.org>.
7965 EOF
7966 # --version always returns 0 per GNU standards.
7967 exit 0;
7968 }
7970 ################################################################
7972 # Parse command line.
7973 sub parse_arguments ()
7974 {
7975 # Start off as gnu.
7976 set_strictness ('gnu');
7978 my $cli_where = new Automake::Location;
7979 my %cli_options =
7980 (
7981 'libdir=s' => \$libdir,
7982 'gnu' => sub { set_strictness ('gnu'); },
7983 'gnits' => sub { set_strictness ('gnits'); },
7984 'cygnus' => sub { set_global_option ('cygnus', $cli_where); },
7985 'foreign' => sub { set_strictness ('foreign'); },
7986 'include-deps' => sub { unset_global_option ('no-dependencies'); },
7987 'i|ignore-deps' => sub { set_global_option ('no-dependencies',
7988 $cli_where); },
7989 'no-force' => sub { $force_generation = 0; },
7990 'f|force-missing' => \$force_missing,
7991 'o|output-dir=s' => \$output_directory,
7992 'a|add-missing' => \$add_missing,
7993 'c|copy' => \$copy_missing,
7994 'v|verbose' => sub { setup_channel 'verb', silent => 0; },
7995 'W|warnings=s' => \&parse_warnings,
7996 # These long options (--Werror and --Wno-error) for backward
7997 # compatibility. Use -Werror and -Wno-error today.
7998 'Werror' => sub { parse_warnings 'W', 'error'; },
7999 'Wno-error' => sub { parse_warnings 'W', 'no-error'; },
8000 );
8001 use Getopt::Long;
8002 Getopt::Long::config ("bundling", "pass_through");
8004 # See if --version or --help is used. We want to process these before
8005 # anything else because the GNU Coding Standards require us to
8006 # `exit 0' after processing these options, and we can't guarantee this
8007 # if we treat other options first. (Handling other options first
8008 # could produce error diagnostics, and in this condition it is
8009 # confusing if Automake does `exit 0'.)
8010 my %cli_options_1st_pass =
8011 (
8012 'version' => \&version,
8013 'help' => \&usage,
8014 # Recognize all other options (and their arguments) but do nothing.
8015 map { $_ => sub {} } (keys %cli_options)
8016 );
8017 my @ARGV_backup = @ARGV;
8018 Getopt::Long::GetOptions %cli_options_1st_pass
8019 or exit 1;
8020 @ARGV = @ARGV_backup;
8022 # Now *really* process the options. This time we know that --help
8023 # and --version are not present, but we specify them nonetheless so
8024 # that ambiguous abbreviation are diagnosed.
8025 Getopt::Long::GetOptions %cli_options, 'version' => sub {}, 'help' => sub {}
8026 or exit 1;
8028 if (defined $output_directory)
8029 {
8030 msg 'obsolete', "`--output-dir' is deprecated\n";
8031 }
8032 else
8033 {
8034 # In the next release we'll remove this entirely.
8035 $output_directory = '.';
8036 }
8038 return unless @ARGV;
8040 if ($ARGV[0] =~ /^-./)
8041 {
8042 my %argopts;
8043 for my $k (keys %cli_options)
8044 {
8045 if ($k =~ /(.*)=s$/)
8046 {
8047 map { $argopts{(length ($_) == 1)
8048 ? "-$_" : "--$_" } = 1; } (split (/\|/, $1));
8049 }
8050 }
8051 if ($ARGV[0] eq '--')
8052 {
8053 shift @ARGV;
8054 }
8055 elsif (exists $argopts{$ARGV[0]})
8056 {
8057 fatal ("option `$ARGV[0]' requires an argument\n"
8058 . "Try `$0 --help' for more information.");
8059 }
8060 else
8061 {
8062 fatal ("unrecognized option `$ARGV[0]'.\n"
8063 . "Try `$0 --help' for more information.");
8064 }
8065 }
8067 my $errspec = 0;
8068 foreach my $arg (@ARGV)
8069 {
8070 fatal ("empty argument\nTry `$0 --help' for more information.")
8071 if ($arg eq '');
8073 # Handle $local:$input syntax.
8074 my ($local, @rest) = split (/:/, $arg);
8075 @rest = ("$local.in",) unless @rest;
8076 my $input = locate_am @rest;
8077 if ($input)
8078 {
8079 push @input_files, $input;
8080 $output_files{$input} = join (':', ($local, @rest));
8081 }
8082 else
8083 {
8084 error "no Automake input file found for `$arg'";
8085 $errspec = 1;
8086 }
8087 }
8088 fatal "no input file found among supplied arguments"
8089 if $errspec && ! @input_files;
8090 }
8093 # handle_makefile ($MAKEFILE_IN)
8094 # ------------------------------
8095 # Deal with $MAKEFILE_IN.
8096 sub handle_makefile ($)
8097 {
8098 my ($file) = @_;
8099 ($am_file = $file) =~ s/\.in$//;
8100 if (! -f ($am_file . '.am'))
8101 {
8102 error "`$am_file.am' does not exist";
8103 }
8104 else
8105 {
8106 # Any warning setting now local to this Makefile.am.
8107 dup_channel_setup;
8109 generate_makefile ($am_file . '.am', $file);
8111 # Back out any warning setting.
8112 drop_channel_setup;
8113 }
8114 }
8116 # handle_makefiles_serial ()
8117 # --------------------------
8118 # Deal with all makefiles, without threads.
8119 sub handle_makefiles_serial ()
8120 {
8121 foreach my $file (@input_files)
8122 {
8123 handle_makefile ($file);
8124 }
8125 }
8127 # get_number_of_threads ()
8128 # ------------------------
8129 # Logic for deciding how many worker threads to use.
8130 sub get_number_of_threads
8131 {
8132 my $nthreads = $ENV{'AUTOMAKE_JOBS'} || 0;
8134 $nthreads = 0
8135 unless $nthreads =~ /^[0-9]+$/;
8137 # It doesn't make sense to use more threads than makefiles,
8138 my $max_threads = @input_files;
8140 # but a single worker thread is helpful for exposing bugs.
8141 if ($automake_will_process_aux_dir && $max_threads > 1)
8142 {
8143 $max_threads--;
8144 }
8145 if ($nthreads > $max_threads)
8146 {
8147 $nthreads = $max_threads;
8148 }
8149 return $nthreads;
8150 }
8152 # handle_makefiles_threaded ($NTHREADS)
8153 # -------------------------------------
8154 # Deal with all makefiles, using threads. The general strategy is to
8155 # spawn NTHREADS worker threads, dispatch makefiles to them, and let the
8156 # worker threads push back everything that needs serialization:
8157 # * warning and (normal) error messages, for stable stderr output
8158 # order and content (avoiding duplicates, for example),
8159 # * races when installing aux files (and respective messages),
8160 # * races when collecting aux files for distribution.
8161 #
8162 # The latter requires that the makefile that deals with the aux dir
8163 # files be handled last, done by the master thread.
8164 sub handle_makefiles_threaded ($)
8165 {
8166 my ($nthreads) = @_;
8168 my @queued_input_files = @input_files;
8169 my $last_input_file = undef;
8170 if ($automake_will_process_aux_dir)
8171 {
8172 $last_input_file = pop @queued_input_files;
8173 }
8175 # The file queue distributes all makefiles, the message queues
8176 # collect all serializations needed for respective files.
8177 my $file_queue = Thread::Queue->new;
8178 my %msg_queues;
8179 foreach my $file (@queued_input_files)
8180 {
8181 $msg_queues{$file} = Thread::Queue->new;
8182 }
8184 verb "spawning $nthreads worker threads";
8185 my @threads = (1 .. $nthreads);
8186 foreach my $t (@threads)
8187 {
8188 $t = threads->new (sub
8189 {
8190 while (my $file = $file_queue->dequeue)
8191 {
8192 verb "handling $file";
8193 my $queue = $msg_queues{$file};
8194 setup_channel_queue ($queue, QUEUE_MESSAGE);
8195 $required_conf_file_queue = $queue;
8196 handle_makefile ($file);
8197 $queue->enqueue (undef);
8198 setup_channel_queue (undef, undef);
8199 $required_conf_file_queue = undef;
8200 }
8201 return $exit_code;
8202 });
8203 }
8205 # Queue all normal makefiles.
8206 verb "queuing " . @queued_input_files . " input files";
8207 $file_queue->enqueue (@queued_input_files, (undef) x @threads);
8209 # Collect and process serializations.
8210 foreach my $file (@queued_input_files)
8211 {
8212 verb "dequeuing messages for " . $file;
8213 reset_local_duplicates ();
8214 my $queue = $msg_queues{$file};
8215 while (my $key = $queue->dequeue)
8216 {
8217 if ($key eq QUEUE_MESSAGE)
8218 {
8219 pop_channel_queue ($queue);
8220 }
8221 elsif ($key eq QUEUE_CONF_FILE)
8222 {
8223 require_queued_conf_file ($queue);
8224 }
8225 else
8226 {
8227 prog_error "unexpected key $key";
8228 }
8229 }
8230 }
8232 foreach my $t (@threads)
8233 {
8234 my @exit_thread = $t->join;
8235 $exit_code = $exit_thread[0]
8236 if ($exit_thread[0] > $exit_code);
8237 }
8239 # The master processes the last file.
8240 if ($automake_will_process_aux_dir)
8241 {
8242 verb "processing last input file";
8243 handle_makefile ($last_input_file);
8244 }
8245 }
8247 ################################################################
8249 # Parse the WARNINGS environment variable.
8250 parse_WARNINGS;
8252 # Parse command line.
8253 parse_arguments;
8255 $configure_ac = require_configure_ac;
8257 # Do configure.ac scan only once.
8258 scan_autoconf_files;
8260 if (! @input_files)
8261 {
8262 my $msg = '';
8263 $msg = "\nDid you forget AC_CONFIG_FILES([Makefile]) in $configure_ac?"
8264 if -f 'Makefile.am';
8265 fatal ("no `Makefile.am' found for any configure output$msg");
8266 }
8268 my $nthreads = get_number_of_threads ();
8270 if ($perl_threads && $nthreads >= 1)
8271 {
8272 handle_makefiles_threaded ($nthreads);
8273 }
8274 else
8275 {
8276 handle_makefiles_serial ();
8277 }
8279 exit $exit_code;
8282 ### Setup "GNU" style for perl-mode and cperl-mode.
8283 ## Local Variables:
8284 ## perl-indent-level: 2
8285 ## perl-continued-statement-offset: 2
8286 ## perl-continued-brace-offset: 0
8287 ## perl-brace-offset: 0
8288 ## perl-brace-imaginary-offset: 0
8289 ## perl-label-offset: -2
8290 ## cperl-indent-level: 2
8291 ## cperl-brace-offset: 0
8292 ## cperl-continued-brace-offset: 0
8293 ## cperl-label-offset: -2
8294 ## cperl-extra-newline-before-brace: t
8295 ## cperl-merge-trailing-else: nil
8296 ## cperl-continued-statement-offset: 2
8297 ## End: