| blob | 6dd8d003421b4d7a994af8bb917eaaf3c5817641 |
1 #!@PERL@ -w
2 # -*- perl -*-
3 # @configure_input@
5 eval 'case $# in 0) exec @PERL@ -S "$0";; *) exec @PERL@ -S "$0" "$@";; esac'
6 if 0;
8 # automake - create Makefile.in from Makefile.am
9 # Copyright (C) 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002,
10 # 2003, 2004 Free Software Foundation, Inc.
12 # This program is free software; you can redistribute it and/or modify
13 # it under the terms of the GNU General Public License as published by
14 # the Free Software Foundation; either version 2, or (at your option)
15 # any later version.
17 # This program is distributed in the hope that it will be useful,
18 # but WITHOUT ANY WARRANTY; without even the implied warranty of
19 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
20 # GNU General Public License for more details.
22 # You should have received a copy of the GNU General Public License
23 # along with this program; if not, write to the Free Software
24 # Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
25 # 02111-1307, USA.
27 # Originally written by David Mackenzie <djm@gnu.ai.mit.edu>.
28 # Perl reimplementation by Tom Tromey <tromey@redhat.com>.
30 package Language;
32 BEGIN
33 {
34 my $perllibdir = $ENV{'perllibdir'} || '@datadir@/@PACKAGE@-@APIVERSION@';
35 unshift @INC, (split '@PATH_SEPARATOR@', $perllibdir);
37 # Override SHELL. This is required on DJGPP so that system() uses
38 # bash, not COMMAND.COM which doesn't quote arguments properly.
39 # Other systems aren't expected to use $SHELL when Automake
40 # runs, but it should be safe to drop the `if DJGPP' guard if
41 # it turns up other systems need the same thing. After all,
42 # if SHELL is used, ./configure's SHELL is always better than
43 # the user's SHELL (which may be something like tcsh).
44 $ENV{'SHELL'} = '@SHELL@' if exists $ENV{'DJGPP'};
45 }
47 use Automake::Struct;
48 struct (# Short name of the language (c, f77...).
49 'name' => "\$",
50 # Nice name of the language (C, Fortran 77...).
51 'Name' => "\$",
53 # List of configure variables which must be defined.
54 'config_vars' => '@',
56 'ansi' => "\$",
57 # `pure' is `1' or `'. A `pure' language is one where, if
58 # all the files in a directory are of that language, then we
59 # do not require the C compiler or any code to call it.
60 'pure' => "\$",
62 'autodep' => "\$",
64 # Name of the compiling variable (COMPILE).
65 'compiler' => "\$",
66 # Content of the compiling variable.
67 'compile' => "\$",
68 # Flag to require compilation without linking (-c).
69 'compile_flag' => "\$",
70 'extensions' => '@',
71 # A subroutine to compute a list of possible extensions of
72 # the product given the input extensions.
73 # (defaults to a subroutine which returns ('.$(OBJEXT)', '.lo'))
74 'output_extensions' => "\$",
75 # A list of flag variables used in 'compile'.
76 # (defaults to [])
77 'flags' => "@",
79 # Any tag to pass to libtool while compiling.
80 'libtool_tag' => "\$",
82 # The file to use when generating rules for this language.
83 # The default is 'depend2'.
84 'rule_file' => "\$",
86 # Name of the linking variable (LINK).
87 'linker' => "\$",
88 # Content of the linking variable.
89 'link' => "\$",
91 # Name of the linker variable (LD).
92 'lder' => "\$",
93 # Content of the linker variable ($(CC)).
94 'ld' => "\$",
96 # Flag to specify the output file (-o).
97 'output_flag' => "\$",
98 '_finish' => "\$",
100 # This is a subroutine which is called whenever we finally
101 # determine the context in which a source file will be
102 # compiled.
103 '_target_hook' => "\$",
105 # If TRUE, nodist_ sources will be compiled using specific rules
106 # (i.e. not inference rules). The default is FALSE.
107 'nodist_specific' => "\$");
110 sub finish ($)
111 {
112 my ($self) = @_;
113 if (defined $self->_finish)
114 {
115 &{$self->_finish} ();
116 }
117 }
119 sub target_hook ($$$$%)
120 {
121 my ($self) = @_;
122 if (defined $self->_target_hook)
123 {
124 &{$self->_target_hook} (@_);
125 }
126 }
128 package Automake;
130 use strict;
131 use Automake::Config;
132 use Automake::General;
133 use Automake::XFile;
134 use Automake::Channels;
135 use Automake::ChannelDefs;
136 use Automake::Configure_ac;
137 use Automake::FileUtils;
138 use Automake::Location;
139 use Automake::Condition qw/TRUE FALSE/;
140 use Automake::DisjConditions;
141 use Automake::Options;
142 use Automake::Version;
143 use Automake::Variable;
144 use Automake::VarDef;
145 use Automake::Rule;
146 use Automake::RuleDef;
147 use Automake::Wrap 'makefile_wrap';
148 use File::Basename;
149 use Carp;
151 ## ----------- ##
152 ## Constants. ##
153 ## ----------- ##
155 # Some regular expressions. One reason to put them here is that it
156 # makes indentation work better in Emacs.
158 # Writing singled-quoted-$-terminated regexes is a pain because
159 # perl-mode thinks of $' as the ${'} variable (instead of a $ followed
160 # by a closing quote. Letting perl-mode think the quote is not closed
161 # leads to all sort of misindentations. On the other hand, defining
162 # regexes as double-quoted strings is far less readable. So usually
163 # we will write:
164 #
165 # $REGEX = '^regex_value' . "\$";
167 my $IGNORE_PATTERN = '^\s*##([^#\n].*)?\n';
168 my $WHITE_PATTERN = '^\s*' . "\$";
169 my $COMMENT_PATTERN = '^#';
170 my $TARGET_PATTERN='[$a-zA-Z_.@%][-.a-zA-Z0-9_(){}/$+@%]*';
171 # A rule has three parts: a list of targets, a list of dependencies,
172 # and optionally actions.
173 my $RULE_PATTERN =
174 "^($TARGET_PATTERN(?:(?:\\\\\n|\\s)+$TARGET_PATTERN)*) *:([^=].*|)\$";
176 # Only recognize leading spaces, not leading tabs. If we recognize
177 # leading tabs here then we need to make the reader smarter, because
178 # otherwise it will think rules like `foo=bar; \' are errors.
179 my $ASSIGNMENT_PATTERN = '^ *([^ \t=:+]*)\s*([:+]?)=\s*(.*)' . "\$";
180 # This pattern recognizes a Gnits version id and sets $1 if the
181 # release is an alpha release. We also allow a suffix which can be
182 # used to extend the version number with a "fork" identifier.
183 my $GNITS_VERSION_PATTERN = '\d+\.\d+([a-z]|\.\d+)?(-[A-Za-z0-9]+)?';
185 my $IF_PATTERN = '^if\s+(!?)\s*([A-Za-z][A-Za-z0-9_]*)\s*(?:#.*)?' . "\$";
186 my $ELSE_PATTERN =
187 '^else(?:\s+(!?)\s*([A-Za-z][A-Za-z0-9_]*))?\s*(?:#.*)?' . "\$";
188 my $ENDIF_PATTERN =
189 '^endif(?:\s+(!?)\s*([A-Za-z][A-Za-z0-9_]*))?\s*(?:#.*)?' . "\$";
190 my $PATH_PATTERN = '(\w|[+/.-])+';
191 # This will pass through anything not of the prescribed form.
192 my $INCLUDE_PATTERN = ('^include\s+'
193 . '((\$\(top_srcdir\)/' . $PATH_PATTERN . ')'
194 . '|(\$\(srcdir\)/' . $PATH_PATTERN . ')'
195 . '|([^/\$]' . $PATH_PATTERN . '))\s*(#.*)?' . "\$");
197 # Match `-d' as a command-line argument in a string.
198 my $DASH_D_PATTERN = "(^|\\s)-d(\\s|\$)";
199 # Directories installed during 'install-exec' phase.
200 my $EXEC_DIR_PATTERN =
201 '^(?:bin|sbin|libexec|sysconf|localstate|lib|pkglib|.*exec.*)' . "\$";
203 # Values for AC_CANONICAL_*
204 use constant AC_CANONICAL_BUILD => 1;
205 use constant AC_CANONICAL_HOST => 2;
206 use constant AC_CANONICAL_TARGET => 3;
208 # Values indicating when something should be cleaned.
209 use constant MOSTLY_CLEAN => 0;
210 use constant CLEAN => 1;
211 use constant DIST_CLEAN => 2;
212 use constant MAINTAINER_CLEAN => 3;
214 # Libtool files.
215 my @libtool_files = qw(ltmain.sh config.guess config.sub);
216 # ltconfig appears here for compatibility with old versions of libtool.
217 my @libtool_sometimes = qw(ltconfig ltcf-c.sh ltcf-cxx.sh ltcf-gcj.sh);
219 # Commonly found files we look for and automatically include in
220 # DISTFILES.
221 my @common_files =
222 (qw(ABOUT-GNU ABOUT-NLS AUTHORS BACKLOG COPYING COPYING.DOC COPYING.LIB
223 COPYING.LESSER ChangeLog INSTALL NEWS README THANKS TODO
224 ansi2knr.1 ansi2knr.c compile config.guess config.rpath config.sub
225 depcomp elisp-comp install-sh libversion.in mdate-sh missing
226 mkinstalldirs py-compile texinfo.tex ylwrap),
227 @libtool_files, @libtool_sometimes);
229 # Commonly used files we auto-include, but only sometimes. This list
230 # is used for the --help output only.
231 my @common_sometimes =
232 qw(aclocal.m4 acconfig.h config.h.top config.h.bot configure
233 configure.ac configure.in stamp-vti);
235 # Standard directories from the GNU Coding Standards, and additional
236 # pkg* directories from Automake. Stored in a hash for fast member check.
237 my %standard_prefix =
238 map { $_ => 1 } (qw(bin data exec include info lib libexec lisp
239 localstate man man1 man2 man3 man4 man5 man6
240 man7 man8 man9 oldinclude pkgdatadir
241 pkgincludedir pkglibdir sbin sharedstate
242 sysconf));
244 # Copyright on generated Makefile.ins.
245 my $gen_copyright = "\
246 # Copyright (C) 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002,
247 # 2003, 2004 Free Software Foundation, Inc.
248 # This Makefile.in is free software; the Free Software Foundation
249 # gives unlimited permission to copy and/or distribute it,
250 # with or without modifications, as long as this notice is preserved.
252 # This program is distributed in the hope that it will be useful,
253 # but WITHOUT ANY WARRANTY, to the extent permitted by law; without
254 # even the implied warranty of MERCHANTABILITY or FITNESS FOR A
255 # PARTICULAR PURPOSE.
256 ";
258 # These constants are returned by lang_*_rewrite functions.
259 # LANG_SUBDIR means that the resulting object file should be in a
260 # subdir if the source file is. In this case the file name cannot
261 # have `..' components.
262 use constant LANG_IGNORE => 0;
263 use constant LANG_PROCESS => 1;
264 use constant LANG_SUBDIR => 2;
266 # These are used when keeping track of whether an object can be built
267 # by two different paths.
268 use constant COMPILE_LIBTOOL => 1;
269 use constant COMPILE_ORDINARY => 2;
271 # We can't always associate a location to a variable or a rule,
272 # when its defined by Automake. We use INTERNAL in this case.
273 use constant INTERNAL => new Automake::Location;
274 \f
276 ## ---------------------------------- ##
277 ## Variables related to the options. ##
278 ## ---------------------------------- ##
280 # TRUE if we should always generate Makefile.in.
281 my $force_generation = 1;
283 # From the Perl manual.
284 my $symlink_exists = (eval 'symlink ("", "");', $@ eq '');
286 # TRUE if missing standard files should be installed.
287 my $add_missing = 0;
289 # TRUE if we should copy missing files; otherwise symlink if possible.
290 my $copy_missing = 0;
292 # TRUE if we should always update files that we know about.
293 my $force_missing = 0;
296 ## ---------------------------------------- ##
297 ## Variables filled during files scanning. ##
298 ## ---------------------------------------- ##
300 # Name of the configure.ac file.
301 my $configure_ac;
303 # Files found by scanning configure.ac for LIBOBJS.
304 my %libsources = ();
306 # Names used in AC_CONFIG_HEADER call.
307 my @config_headers = ();
309 # Names used in AC_CONFIG_LINKS call.
310 my @config_links = ();
312 # Directory where output files go. Actually, output files are
313 # relative to this directory.
314 my $output_directory;
316 # List of Makefile.am's to process, and their corresponding outputs.
317 my @input_files = ();
318 my %output_files = ();
320 # Complete list of Makefile.am's that exist.
321 my @configure_input_files = ();
323 # List of files in AC_CONFIG_FILES/AC_OUTPUT without Makefile.am's,
324 # and their outputs.
325 my @other_input_files = ();
326 # Where each AC_CONFIG_FILES/AC_OUTPUT/AC_CONFIG_LINK/AC_CONFIG_HEADER appears.
327 # The keys are the files created by these macros.
328 my %ac_config_files_location = ();
330 # Directory to search for configure-required files. This
331 # will be computed by &locate_aux_dir and can be set using
332 # AC_CONFIG_AUX_DIR in configure.ac.
333 # $CONFIG_AUX_DIR is the `raw' directory, valid only in the source-tree.
334 my $config_aux_dir = '';
335 my $config_aux_dir_set_in_configure_ac = 0;
336 # $AM_CONFIG_AUX_DIR is prefixed with $(top_srcdir), so it can be used
337 # in Makefiles.
338 my $am_config_aux_dir = '';
340 # Whether AM_GNU_GETTEXT has been seen in configure.ac.
341 my $seen_gettext = 0;
342 # Whether AM_GNU_GETTEXT([external]) is used.
343 my $seen_gettext_external = 0;
344 # Where AM_GNU_GETTEXT appears.
345 my $ac_gettext_location;
347 # Lists of tags supported by Libtool.
348 my %libtool_tags = ();
349 # 1 if Libtool uses LT_SUPPORTED_TAG. If it does, then it also
350 # use AC_REQUIRE_AUX_FILE.
351 my $libtool_new_api = 0;
353 # Most important AC_CANONICAL_* macro seen so far.
354 my $seen_canonical = 0;
355 # Location of that macro.
356 my $canonical_location;
358 # Where AM_MAINTAINER_MODE appears.
359 my $seen_maint_mode;
361 # Actual version we've seen.
362 my $package_version = '';
364 # Where version is defined.
365 my $package_version_location;
367 # TRUE if we've seen AC_ENABLE_MULTILIB.
368 my $seen_multilib = 0;
370 # TRUE if we've seen AM_PROG_CC_C_O
371 my $seen_cc_c_o = 0;
373 # Location of AC_REQUIRE_AUX_FILE calls, indexed by their argument.
374 my %required_aux_file = ();
376 # Where AM_INIT_AUTOMAKE is called;
377 my $seen_init_automake = 0;
379 # TRUE if we've seen AM_AUTOMAKE_VERSION.
380 my $seen_automake_version = 0;
382 # Hash table of discovered configure substitutions. Keys are names,
383 # values are `FILE:LINE' strings which are used by error message
384 # generation.
385 my %configure_vars = ();
387 # Files included by $configure_ac.
388 my @configure_deps = ();
390 # Greatest timestamp of configure's dependencies.
391 my $configure_deps_greatest_timestamp = 0;
393 # Hash table of AM_CONDITIONAL variables seen in configure.
394 my %configure_cond = ();
396 # This maps extensions onto language names.
397 my %extension_map = ();
399 # List of the DIST_COMMON files we discovered while reading
400 # configure.in
401 my $configure_dist_common = '';
403 # This maps languages names onto objects.
404 my %languages = ();
406 # List of targets we must always output.
407 # FIXME: Complete, and remove falsely required targets.
408 my %required_targets =
409 (
410 'all' => 1,
411 'dvi' => 1,
412 'pdf' => 1,
413 'ps' => 1,
414 'info' => 1,
415 'install-info' => 1,
416 'install' => 1,
417 'install-data' => 1,
418 'install-exec' => 1,
419 'uninstall' => 1,
421 # FIXME: Not required, temporary hacks.
422 # Well, actually they are sort of required: the -recursive
423 # targets will run them anyway...
424 'dvi-am' => 1,
425 'pdf-am' => 1,
426 'ps-am' => 1,
427 'info-am' => 1,
428 'install-data-am' => 1,
429 'install-exec-am' => 1,
430 'installcheck-am' => 1,
431 'uninstall-am' => 1,
433 'install-man' => 1,
434 );
436 # Set to 1 if this run will create the Makefile.in that distribute
437 # the files in config_aux_dir.
438 my $automake_will_process_aux_dir = 0;
440 # The name of the Makefile currently being processed.
441 my $am_file = 'BUG';
442 \f
444 ################################################################
446 ## ------------------------------------------ ##
447 ## Variables reset by &initialize_per_input. ##
448 ## ------------------------------------------ ##
450 # Basename and relative dir of the input file.
451 my $am_file_name;
452 my $am_relative_dir;
454 # Same but wrt Makefile.in.
455 my $in_file_name;
456 my $relative_dir;
458 # Greatest timestamp of the output's dependencies (excluding
459 # configure's dependencies).
460 my $output_deps_greatest_timestamp;
462 # These two variables are used when generating each Makefile.in.
463 # They hold the Makefile.in until it is ready to be printed.
464 my $output_rules;
465 my $output_vars;
466 my $output_trailer;
467 my $output_all;
468 my $output_header;
470 # This is the conditional stack, updated on if/else/endif, and
471 # used to build Condition objects.
472 my @cond_stack;
474 # This holds the set of included files.
475 my @include_stack;
477 # This holds a list of directories which we must create at `dist'
478 # time. This is used in some strange scenarios involving weird
479 # AC_OUTPUT commands.
480 my %dist_dirs;
482 # List of dependencies for the obvious targets.
483 my @all;
484 my @check;
485 my @check_tests;
487 # Keys in this hash table are files to delete. The associated
488 # value tells when this should happen (MOSTLY_CLEAN, DIST_CLEAN, etc.)
489 my %clean_files;
491 # Keys in this hash table are object files or other files in
492 # subdirectories which need to be removed. This only holds files
493 # which are created by compilations. The value in the hash indicates
494 # when the file should be removed.
495 my %compile_clean_files;
497 # Keys in this hash table are directories where we expect to build a
498 # libtool object. We use this information to decide what directories
499 # to delete.
500 my %libtool_clean_directories;
502 # Value of `$(SOURCES)', used by tags.am.
503 my @sources;
504 # Sources which go in the distribution.
505 my @dist_sources;
507 # This hash maps object file names onto their corresponding source
508 # file names. This is used to ensure that each object is created
509 # by a single source file.
510 my %object_map;
512 # This hash maps object file names onto an integer value representing
513 # whether this object has been built via ordinary compilation or
514 # libtool compilation (the COMPILE_* constants).
515 my %object_compilation_map;
518 # This keeps track of the directories for which we've already
519 # created dirstamp code.
520 my %directory_map;
522 # All .P files.
523 my %dep_files;
525 # This is a list of all targets to run during "make dist".
526 my @dist_targets;
528 # Keys in this hash are the basenames of files which must depend on
529 # ansi2knr. Values are either the empty string, or the directory in
530 # which the ANSI source file appears; the directory must have a
531 # trailing `/'.
532 my %de_ansi_files;
534 # This is the name of the redirect `all' target to use.
535 my $all_target;
537 # This keeps track of which extensions we've seen (that we care
538 # about).
539 my %extension_seen;
541 # This is random scratch space for the language finish functions.
542 # Don't randomly overwrite it; examine other uses of keys first.
543 my %language_scratch;
545 # We keep track of which objects need special (per-executable)
546 # handling on a per-language basis.
547 my %lang_specific_files;
549 # This is set when `handle_dist' has finished. Once this happens,
550 # we should no longer push on dist_common.
551 my $handle_dist_run;
553 # Used to store a set of linkers needed to generate the sources currently
554 # under consideration.
555 my %linkers_used;
557 # True if we need `LINK' defined. This is a hack.
558 my $need_link;
560 # Was get_object_extension run?
561 # FIXME: This is a hack. a better switch should be found.
562 my $get_object_extension_was_run;
564 # Record each file processed by make_paragraphs.
565 my %transformed_files;
567 # Cache each file processed by make_paragraphs.
568 # (This is different from %transformed_files because
569 # %transformed_files is reset for each file while %am_file_cache
570 # it global to the run.)
571 my %am_file_cache;
573 ################################################################
575 # var_SUFFIXES_trigger ($TYPE, $VALUE)
576 # ------------------------------------
577 # This is called by Automake::Variable::define() when SUFFIXES
578 # is defined ($TYPE eq '') or appended ($TYPE eq '+').
579 # The work here needs to be performed as a side-effect of the
580 # macro_define() call because SUFFIXES definitions impact
581 # on $KNOWN_EXTENSIONS_PATTERN which is used used when parsing
582 # the input am file.
583 sub var_SUFFIXES_trigger ($$)
584 {
585 my ($type, $value) = @_;
586 accept_extensions (split (' ', $value));
587 }
588 Automake::Variable::hook ('SUFFIXES', \&var_SUFFIXES_trigger);
590 ################################################################
592 ## --------------------------------- ##
593 ## Forward subroutine declarations. ##
594 ## --------------------------------- ##
595 sub register_language (%);
596 sub file_contents_internal ($$$%);
597 sub define_files_variable ($\@$$);
600 # &initialize_per_input ()
601 # ------------------------
602 # (Re)-Initialize per-Makefile.am variables.
603 sub initialize_per_input ()
604 {
605 reset_local_duplicates ();
607 $am_file_name = '';
608 $am_relative_dir = '';
610 $in_file_name = '';
611 $relative_dir = '';
613 $output_deps_greatest_timestamp = 0;
615 $output_rules = '';
616 $output_vars = '';
617 $output_trailer = '';
618 $output_all = '';
619 $output_header = '';
621 Automake::Options::reset;
622 Automake::Variable::reset;
623 Automake::Rule::reset;
625 @cond_stack = ();
627 @include_stack = ();
629 %dist_dirs = ();
631 @all = ();
632 @check = ();
633 @check_tests = ();
635 %clean_files = ();
637 @sources = ();
638 @dist_sources = ();
640 %object_map = ();
641 %object_compilation_map = ();
643 %directory_map = ();
645 %dep_files = ();
647 @dist_targets = ();
649 %de_ansi_files = ();
651 $all_target = '';
653 %extension_seen = ();
655 %language_scratch = ();
657 %lang_specific_files = ();
659 $handle_dist_run = 0;
661 $need_link = 0;
663 $get_object_extension_was_run = 0;
665 %compile_clean_files = ();
667 # We always include `.'. This isn't strictly correct.
668 %libtool_clean_directories = ('.' => 1);
670 %transformed_files = ();
671 }
674 ################################################################
676 # Initialize our list of languages that are internally supported.
678 # C.
679 register_language ('name' => 'c',
680 'Name' => 'C',
681 'config_vars' => ['CC'],
682 'ansi' => 1,
683 'autodep' => '',
684 'flags' => ['CFLAGS', 'CPPFLAGS'],
685 'compiler' => 'COMPILE',
686 'compile' => '$(CC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS) $(CPPFLAGS) $(AM_CFLAGS) $(CFLAGS)',
687 'lder' => 'CCLD',
688 'ld' => '$(CC)',
689 'linker' => 'LINK',
690 'link' => '$(CCLD) $(AM_CFLAGS) $(CFLAGS) $(AM_LDFLAGS) $(LDFLAGS) -o $@',
691 'compile_flag' => '-c',
692 'libtool_tag' => 'CC',
693 'extensions' => ['.c'],
694 '_finish' => \&lang_c_finish);
696 # C++.
697 register_language ('name' => 'cxx',
698 'Name' => 'C++',
699 'config_vars' => ['CXX'],
700 'linker' => 'CXXLINK',
701 'link' => '$(CXXLD) $(AM_CXXFLAGS) $(CXXFLAGS) $(AM_LDFLAGS) $(LDFLAGS) -o $@',
702 'autodep' => 'CXX',
703 'flags' => ['CXXFLAGS', 'CPPFLAGS'],
704 'compile' => '$(CXX) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS) $(CPPFLAGS) $(AM_CXXFLAGS) $(CXXFLAGS)',
705 'compiler' => 'CXXCOMPILE',
706 'compile_flag' => '-c',
707 'output_flag' => '-o',
708 'libtool_tag' => 'CXX',
709 'lder' => 'CXXLD',
710 'ld' => '$(CXX)',
711 'pure' => 1,
712 'extensions' => ['.c++', '.cc', '.cpp', '.cxx', '.C']);
714 # Objective C.
715 register_language ('name' => 'objc',
716 'Name' => 'Objective C',
717 'config_vars' => ['OBJC'],
718 'linker' => 'OBJCLINK',,
719 'link' => '$(OBJCLD) $(AM_OBJCFLAGS) $(OBJCFLAGS) $(AM_LDFLAGS) $(LDFLAGS) -o $@',
720 'autodep' => 'OBJC',
721 'flags' => ['OBJCFLAGS', 'CPPFLAGS'],
722 'compile' => '$(OBJC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS) $(CPPFLAGS) $(AM_OBJCFLAGS) $(OBJCFLAGS)',
723 'compiler' => 'OBJCCOMPILE',
724 'compile_flag' => '-c',
725 'output_flag' => '-o',
726 'lder' => 'OBJCLD',
727 'ld' => '$(OBJC)',
728 'pure' => 1,
729 'extensions' => ['.m']);
731 # Headers.
732 register_language ('name' => 'header',
733 'Name' => 'Header',
734 'extensions' => ['.h', '.H', '.hxx', '.h++', '.hh',
735 '.hpp', '.inc'],
736 # No output.
737 'output_extensions' => sub { return () },
738 # Nothing to do.
739 '_finish' => sub { });
741 # Yacc (C & C++).
742 register_language ('name' => 'yacc',
743 'Name' => 'Yacc',
744 'config_vars' => ['YACC'],
745 'flags' => ['YFLAGS'],
746 'compile' => '$(YACC) $(YFLAGS) $(AM_YFLAGS)',
747 'compiler' => 'YACCCOMPILE',
748 'extensions' => ['.y'],
749 'output_extensions' => sub { (my $ext = $_[0]) =~ tr/y/c/;
750 return ($ext,) },
751 'rule_file' => 'yacc',
752 '_finish' => \&lang_yacc_finish,
753 '_target_hook' => \&lang_yacc_target_hook,
754 'nodist_specific' => 1);
755 register_language ('name' => 'yaccxx',
756 'Name' => 'Yacc (C++)',
757 'config_vars' => ['YACC'],
758 'rule_file' => 'yacc',
759 'flags' => ['YFLAGS'],
760 'compiler' => 'YACCCOMPILE',
761 'compile' => '$(YACC) $(YFLAGS) $(AM_YFLAGS)',
762 'extensions' => ['.y++', '.yy', '.yxx', '.ypp'],
763 'output_extensions' => sub { (my $ext = $_[0]) =~ tr/y/c/;
764 return ($ext,) },
765 '_finish' => \&lang_yacc_finish,
766 '_target_hook' => \&lang_yacc_target_hook,
767 'nodist_specific' => 1);
769 # Lex (C & C++).
770 register_language ('name' => 'lex',
771 'Name' => 'Lex',
772 'config_vars' => ['LEX'],
773 'rule_file' => 'lex',
774 'flags' => ['LFLAGS'],
775 'compile' => '$(LEX) $(LFLAGS) $(AM_LFLAGS)',
776 'compiler' => 'LEXCOMPILE',
777 'extensions' => ['.l'],
778 'output_extensions' => sub { (my $ext = $_[0]) =~ tr/l/c/;
779 return ($ext,) },
780 '_finish' => \&lang_lex_finish,
781 '_target_hook' => \&lang_lex_target_hook,
782 'nodist_specific' => 1);
783 register_language ('name' => 'lexxx',
784 'Name' => 'Lex (C++)',
785 'config_vars' => ['LEX'],
786 'rule_file' => 'lex',
787 'flags' => ['LFLAGS'],
788 'compile' => '$(LEX) $(LFLAGS) $(AM_LFLAGS)',
789 'compiler' => 'LEXCOMPILE',
790 'extensions' => ['.l++', '.ll', '.lxx', '.lpp'],
791 'output_extensions' => sub { (my $ext = $_[0]) =~ tr/l/c/;
792 return ($ext,) },
793 '_finish' => \&lang_lex_finish,
794 '_target_hook' => \&lang_lex_target_hook,
795 'nodist_specific' => 1);
797 # Assembler.
798 register_language ('name' => 'asm',
799 'Name' => 'Assembler',
800 'config_vars' => ['CCAS', 'CCASFLAGS'],
802 'flags' => ['CCASFLAGS'],
803 # Users can set AM_ASFLAGS to includes DEFS, INCLUDES,
804 # or anything else required. They can also set AS.
805 'compile' => '$(CCAS) $(AM_CCASFLAGS) $(CCASFLAGS)',
806 'compiler' => 'CCASCOMPILE',
807 'compile_flag' => '-c',
808 'extensions' => ['.s', '.S'],
810 # With assembly we still use the C linker.
811 '_finish' => \&lang_c_finish);
813 # Fortran 77
814 register_language ('name' => 'f77',
815 'Name' => 'Fortran 77',
816 'linker' => 'F77LINK',
817 'link' => '$(F77LD) $(AM_FFLAGS) $(FFLAGS) $(AM_LDFLAGS) $(LDFLAGS) -o $@',
818 'flags' => ['FFLAGS'],
819 'compile' => '$(F77) $(AM_FFLAGS) $(FFLAGS)',
820 'compiler' => 'F77COMPILE',
821 'compile_flag' => '-c',
822 'output_flag' => '-o',
823 'libtool_tag' => 'F77',
824 'lder' => 'F77LD',
825 'ld' => '$(F77)',
826 'pure' => 1,
827 'extensions' => ['.f', '.for']);
829 # Fortran
830 register_language ('name' => 'fc',
831 'Name' => 'Fortran',
832 'linker' => 'FCLINK',
833 'link' => '$(FCLD) $(AM_FCFLAGS) $(FCFLAGS) $(AM_LDFLAGS) $(LDFLAGS) -o $@',
834 'flags' => ['FCFLAGS'],
835 'compile' => '$(FC) $(AM_FCFLAGS) $(FCFLAGS)',
836 'compiler' => 'FCCOMPILE',
837 'compile_flag' => '-c',
838 'output_flag' => '-o',
839 'lder' => 'FCLD',
840 'ld' => '$(FC)',
841 'pure' => 1,
842 'extensions' => ['.f90', '.f95']);
844 # Preprocessed Fortran
845 register_language ('name' => 'ppfc',
846 'Name' => 'Preprocessed Fortran',
847 'config_vars' => ['FC'],
848 'linker' => 'FCLINK',
849 'link' => '$(FCLD) $(AM_FFLAGS) $(FCFLAGS) $(AM_LDFLAGS) $(LDFLAGS) -o $@',
850 'lder' => 'FCLD',
851 'ld' => '$(FC)',
852 'flags' => ['FCFLAGS', 'CPPFLAGS'],
853 'compiler' => 'PPFCCOMPILE',
854 'compile' => '$(FC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS) $(CPPFLAGS) $(AM_FCFLAGS) $(FCFLAGS)',
855 'compile_flag' => '-c',
856 'output_flag' => '-o',
857 'libtool_tag' => 'FC',
858 'pure' => 1,
859 'extensions' => ['.F90','.F95']);
861 # Preprocessed Fortran 77
862 #
863 # The current support for preprocessing Fortran 77 just involves
864 # passing `$(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS)
865 # $(CPPFLAGS)' as additional flags to the Fortran 77 compiler, since
866 # this is how GNU Make does it; see the `GNU Make Manual, Edition 0.51
867 # for `make' Version 3.76 Beta' (specifically, from info file
868 # `(make)Catalogue of Rules').
869 #
870 # A better approach would be to write an Autoconf test
871 # (i.e. AC_PROG_FPP) for a Fortran 77 preprocessor, because not all
872 # Fortran 77 compilers know how to do preprocessing. The Autoconf
873 # macro AC_PROG_FPP should test the Fortran 77 compiler first for
874 # preprocessing capabilities, and then fall back on cpp (if cpp were
875 # available).
876 register_language ('name' => 'ppf77',
877 'Name' => 'Preprocessed Fortran 77',
878 'config_vars' => ['F77'],
879 'linker' => 'F77LINK',
880 'link' => '$(F77LD) $(AM_FFLAGS) $(FFLAGS) $(AM_LDFLAGS) $(LDFLAGS) -o $@',
881 'lder' => 'F77LD',
882 'ld' => '$(F77)',
883 'flags' => ['FFLAGS', 'CPPFLAGS'],
884 'compiler' => 'PPF77COMPILE',
885 'compile' => '$(F77) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS) $(CPPFLAGS) $(AM_FFLAGS) $(FFLAGS)',
886 'compile_flag' => '-c',
887 'output_flag' => '-o',
888 'libtool_tag' => 'F77',
889 'pure' => 1,
890 'extensions' => ['.F']);
892 # Ratfor.
893 register_language ('name' => 'ratfor',
894 'Name' => 'Ratfor',
895 'config_vars' => ['F77'],
896 'linker' => 'F77LINK',
897 'link' => '$(F77LD) $(AM_FFLAGS) $(FFLAGS) $(AM_LDFLAGS) $(LDFLAGS) -o $@',
898 'lder' => 'F77LD',
899 'ld' => '$(F77)',
900 'flags' => ['RFLAGS', 'FFLAGS'],
901 # FIXME also FFLAGS.
902 'compile' => '$(F77) $(AM_FFLAGS) $(FFLAGS) $(AM_RFLAGS) $(RFLAGS)',
903 'compiler' => 'RCOMPILE',
904 'compile_flag' => '-c',
905 'output_flag' => '-o',
906 'libtool_tag' => 'F77',
907 'pure' => 1,
908 'extensions' => ['.r']);
910 # Java via gcj.
911 register_language ('name' => 'java',
912 'Name' => 'Java',
913 'config_vars' => ['GCJ'],
914 'linker' => 'GCJLINK',
915 'link' => '$(GCJLD) $(AM_GCJFLAGS) $(GCJFLAGS) $(AM_LDFLAGS) $(LDFLAGS) -o $@',
916 'autodep' => 'GCJ',
917 'flags' => ['GCJFLAGS'],
918 'compile' => '$(GCJ) $(AM_GCJFLAGS) $(GCJFLAGS)',
919 'compiler' => 'GCJCOMPILE',
920 'compile_flag' => '-c',
921 'output_flag' => '-o',
922 'libtool_tag' => 'GCJ',
923 'lder' => 'GCJLD',
924 'ld' => '$(GCJ)',
925 'pure' => 1,
926 'extensions' => ['.java', '.class', '.zip', '.jar']);
928 ################################################################
930 # Error reporting functions.
932 # err_am ($MESSAGE, [%OPTIONS])
933 # -----------------------------
934 # Uncategorized errors about the current Makefile.am.
935 sub err_am ($;%)
936 {
937 msg_am ('error', @_);
938 }
940 # err_ac ($MESSAGE, [%OPTIONS])
941 # -----------------------------
942 # Uncategorized errors about configure.ac.
943 sub err_ac ($;%)
944 {
945 msg_ac ('error', @_);
946 }
948 # msg_am ($CHANNEL, $MESSAGE, [%OPTIONS])
949 # ---------------------------------------
950 # Messages about about the current Makefile.am.
951 sub msg_am ($$;%)
952 {
953 my ($channel, $msg, %opts) = @_;
954 msg $channel, "${am_file}.am", $msg, %opts;
955 }
957 # msg_ac ($CHANNEL, $MESSAGE, [%OPTIONS])
958 # ---------------------------------------
959 # Messages about about configure.ac.
960 sub msg_ac ($$;%)
961 {
962 my ($channel, $msg, %opts) = @_;
963 msg $channel, $configure_ac, $msg, %opts;
964 }
966 ################################################################
968 # subst ($TEXT)
969 # -------------
970 # Return a configure-style substitution using the indicated text.
971 # We do this to avoid having the substitutions directly in automake.in;
972 # when we do that they are sometimes removed and this causes confusion
973 # and bugs.
974 sub subst ($)
975 {
976 my ($text) = @_;
977 return '@' . $text . '@';
978 }
980 ################################################################
983 # $BACKPATH
984 # &backname ($REL-DIR)
985 # --------------------
986 # If I `cd $REL-DIR', then to come back, I should `cd $BACKPATH'.
987 # For instance `src/foo' => `../..'.
988 # Works with non strictly increasing paths, i.e., `src/../lib' => `..'.
989 sub backname ($)
990 {
991 my ($file) = @_;
992 my @res;
993 foreach (split (/\//, $file))
994 {
995 next if $_ eq '.' || $_ eq '';
996 if ($_ eq '..')
997 {
998 pop @res;
999 }
1000 else
1001 {
1002 push (@res, '..');
1003 }
1004 }
1005 return join ('/', @res) || '.';
1006 }
1008 ################################################################
1011 # Handle AUTOMAKE_OPTIONS variable. Return 1 on error, 0 otherwise.
1012 sub handle_options
1013 {
1014 my $var = var ('AUTOMAKE_OPTIONS');
1015 if ($var)
1016 {
1017 # FIXME: We should disallow conditional definitions of AUTOMAKE_OPTIONS.
1018 if (process_option_list ($var->rdef (TRUE)->location,
1019 $var->value_as_list_recursive (cond_filter =>
1020 TRUE)))
1021 {
1022 return 1;
1023 }
1024 }
1026 if ($strictness == GNITS)
1027 {
1028 set_option ('readme-alpha', INTERNAL);
1029 set_option ('std-options', INTERNAL);
1030 set_option ('check-news', INTERNAL);
1031 }
1033 return 0;
1034 }
1036 # shadow_unconditionally ($varname, $where)
1037 # -----------------------------------------
1038 # Return a $(variable) that contains all possible values
1039 # $varname can take.
1040 # If the VAR wasn't defined conditionally, return $(VAR).
1041 # Otherwise we create a am__VAR_DIST variable which contains
1042 # all possible values, and return $(am__VAR_DIST).
1043 sub shadow_unconditionally ($$)
1044 {
1045 my ($varname, $where) = @_;
1046 my $var = var $varname;
1047 if ($var->has_conditional_contents)
1048 {
1049 $varname = "am__${varname}_DIST";
1050 my @files = uniq ($var->value_as_list_recursive);
1051 define_pretty_variable ($varname, TRUE, $where, @files);
1052 }
1053 return "\$($varname)"
1054 }
1056 # get_object_extension ($OUT)
1057 # ---------------------------
1058 # Return object extension. Just once, put some code into the output.
1059 # OUT is the name of the output file
1060 sub get_object_extension
1061 {
1062 my ($out) = @_;
1064 # Maybe require libtool library object files.
1065 my $extension = '.$(OBJEXT)';
1066 $extension = '.lo' if ($out =~ /\.la$/);
1068 # Check for automatic de-ANSI-fication.
1069 $extension = '$U' . $extension
1070 if option 'ansi2knr';
1072 $get_object_extension_was_run = 1;
1074 return $extension;
1075 }
1078 # Call finish function for each language that was used.
1079 sub handle_languages
1080 {
1081 if (! option 'no-dependencies')
1082 {
1083 # Include auto-dep code. Don't include it if DEP_FILES would
1084 # be empty.
1085 if (&saw_sources_p (0) && keys %dep_files)
1086 {
1087 # Set location of depcomp.
1088 &define_variable ('depcomp',
1089 "\$(SHELL) $am_config_aux_dir/depcomp",
1090 INTERNAL);
1091 &define_variable ('am__depfiles_maybe', 'depfiles', INTERNAL);
1093 require_conf_file ("$am_file.am", FOREIGN, 'depcomp');
1095 my @deplist = sort keys %dep_files;
1096 # Generate each `include' individually. Irix 6 make will
1097 # not properly include several files resulting from a
1098 # variable expansion; generating many separate includes
1099 # seems safest.
1100 $output_rules .= "\n";
1101 foreach my $iter (@deplist)
1102 {
1103 $output_rules .= (subst ('AMDEP_TRUE')
1104 . subst ('am__include')
1105 . ' '
1106 . subst ('am__quote')
1107 . $iter
1108 . subst ('am__quote')
1109 . "\n");
1110 }
1112 # Compute the set of directories to remove in distclean-depend.
1113 my @depdirs = uniq (map { dirname ($_) } @deplist);
1114 $output_rules .= &file_contents ('depend',
1115 new Automake::Location,
1116 DEPDIRS => "@depdirs");
1117 }
1118 }
1119 else
1120 {
1121 &define_variable ('depcomp', '', INTERNAL);
1122 &define_variable ('am__depfiles_maybe', '', INTERNAL);
1123 }
1125 my %done;
1127 # Is the c linker needed?
1128 my $needs_c = 0;
1129 foreach my $ext (sort keys %extension_seen)
1130 {
1131 next unless $extension_map{$ext};
1133 my $lang = $languages{$extension_map{$ext}};
1135 my $rule_file = $lang->rule_file || 'depend2';
1137 # Get information on $LANG.
1138 my $pfx = $lang->autodep;
1139 my $fpfx = ($pfx eq '') ? 'CC' : $pfx;
1141 my ($AMDEP, $FASTDEP) =
1142 (option 'no-dependencies' || $lang->autodep eq 'no')
1143 ? ('FALSE', 'FALSE') : ('AMDEP', "am__fastdep$fpfx");
1145 my %transform = ('EXT' => $ext,
1146 'PFX' => $pfx,
1147 'FPFX' => $fpfx,
1148 'AMDEP' => $AMDEP,
1149 'FASTDEP' => $FASTDEP,
1150 '-c' => $lang->compile_flag || '',
1151 'MORE-THAN-ONE'
1152 => (count_files_for_language ($lang->name) > 1),
1153 # These are not used, but they need to be defined
1154 # so &transform do not complain.
1155 SUBDIROBJ => 0,
1156 'DERIVED-EXT' => 'BUG',
1157 DIST_SOURCE => 1,
1158 );
1160 # Generate the appropriate rules for this extension.
1161 if (((! option 'no-dependencies') && $lang->autodep ne 'no')
1162 || defined $lang->compile)
1163 {
1164 # Some C compilers don't support -c -o. Use it only if really
1165 # needed.
1166 my $output_flag = $lang->output_flag || '';
1167 $output_flag = '-o'
1168 if (! $output_flag
1169 && $lang->name eq 'c'
1170 && option 'subdir-objects');
1172 # Compute a possible derived extension.
1173 # This is not used by depend2.am.
1174 my $der_ext = (&{$lang->output_extensions} ($ext))[0];
1176 # When we output an inference rule like `.c.o:' we
1177 # have two cases to consider: either subdir-objects
1178 # is used, or it is not.
1179 #
1180 # In the latter case the rule is used to build objects
1181 # in the current directory, and dependencies always
1182 # go into `./$(DEPDIR)/'. We can hard-code this value.
1183 #
1184 # In the former case the rule can be used to build
1185 # objects in sub-directories too. Dependencies should
1186 # go into the appropriate sub-directories, e.g.,
1187 # `sub/$(DEPDIR)/'. The value of this directory
1188 # need the be computed on-the-fly.
1189 #
1190 # DEPBASE holds the name of this directory, plus the
1191 # basename part of the object file (extensions Po, TPo,
1192 # Plo, TPlo will be added later as appropriate). It is
1193 # either hardcoded, or a shell variable (`$depbase') that
1194 # will be computed by the rule.
1195 my $depbase =
1196 option ('subdir-objects') ? '$$depbase' : '$(DEPDIR)/$*';
1197 $output_rules .=
1198 file_contents ($rule_file,
1199 new Automake::Location,
1200 %transform,
1201 GENERIC => 1,
1203 'DERIVED-EXT' => $der_ext,
1205 DEPBASE => $depbase,
1206 BASE => '$*',
1207 SOURCE => '$<',
1208 OBJ => '$@',
1209 OBJOBJ => '$@',
1210 LTOBJ => '$@',
1212 COMPILE => '$(' . $lang->compiler . ')',
1213 LTCOMPILE => '$(LT' . $lang->compiler . ')',
1214 -o => $output_flag,
1215 SUBDIROBJ => !! option 'subdir-objects');
1216 }
1218 # Now include code for each specially handled object with this
1219 # language.
1220 my %seen_files = ();
1221 foreach my $file (@{$lang_specific_files{$lang->name}})
1222 {
1223 my ($derived, $source, $obj, $myext, %file_transform) = @$file;
1225 # We might see a given object twice, for instance if it is
1226 # used under different conditions.
1227 next if defined $seen_files{$obj};
1228 $seen_files{$obj} = 1;
1230 prog_error ("found " . $lang->name .
1231 " in handle_languages, but compiler not defined")
1232 unless defined $lang->compile;
1234 my $obj_compile = $lang->compile;
1236 # Rewrite each occurrence of `AM_$flag' in the compile
1237 # rule into `${derived}_$flag' if it exists.
1238 for my $flag (@{$lang->flags})
1239 {
1240 my $val = "${derived}_$flag";
1241 $obj_compile =~ s/\(AM_$flag\)/\($val\)/
1242 if set_seen ($val);
1243 }
1245 my $libtool_tag = '';
1246 if ($lang->libtool_tag && exists $libtool_tags{$lang->libtool_tag})
1247 {
1248 $libtool_tag = '--tag=' . $lang->libtool_tag . ' '
1249 }
1251 my $obj_ltcompile =
1252 '$(LIBTOOL) --mode=compile ' . $libtool_tag . $obj_compile;
1254 # We _need_ `-o' for per object rules.
1255 my $output_flag = $lang->output_flag || '-o';
1257 my $depbase = dirname ($obj);
1258 $depbase = ''
1259 if $depbase eq '.';
1260 $depbase .= '/'
1261 unless $depbase eq '';
1262 $depbase .= '$(DEPDIR)/' . basename ($obj);
1264 # Support for deansified files in subdirectories is ugly
1265 # enough to deserve an explanation.
1266 #
1267 # A Note about normal ansi2knr processing first. On
1268 #
1269 # AUTOMAKE_OPTIONS = ansi2knr
1270 # bin_PROGRAMS = foo
1271 # foo_SOURCES = foo.c
1272 #
1273 # we generate rules similar to:
1274 #
1275 # foo: foo$U.o; link ...
1276 # foo$U.o: foo$U.c; compile ...
1277 # foo_.c: foo.c; ansi2knr ...
1278 #
1279 # this is fairly compact, and will call ansi2knr depending
1280 # on the value of $U (`' or `_').
1281 #
1282 # It's harder with subdir sources. On
1283 #
1284 # AUTOMAKE_OPTIONS = ansi2knr
1285 # bin_PROGRAMS = foo
1286 # foo_SOURCES = sub/foo.c
1287 #
1288 # we have to create foo_.c in the current directory.
1289 # (Unless the user asks 'subdir-objects'.) This is important
1290 # in case the same file (`foo.c') is compiled from other
1291 # directories with different cpp options: foo_.c would
1292 # be preprocessed for only one set of options if it were
1293 # put in the subdirectory.
1294 #
1295 # Because foo$U.o must be built from either foo_.c or
1296 # sub/foo.c we can't be as concise as in the first example.
1297 # Instead we output
1298 #
1299 # foo: foo$U.o; link ...
1300 # foo_.o: foo_.c; compile ...
1301 # foo.o: sub/foo.c; compile ...
1302 # foo_.c: foo.c; ansi2knr ...
1303 #
1304 # This is why we'll now transform $rule_file twice
1305 # if we detect this case.
1306 # A first time we output the compile rule with `$U'
1307 # replaced by `_' and the source directory removed,
1308 # and another time we simply remove `$U'.
1309 #
1310 # Note that at this point $source (as computed by
1311 # &handle_single_transform) is `sub/foo$U.c'.
1312 # This can be confusing: it can be used as-is when
1313 # subdir-objects is set, otherwise you have to know
1314 # it really means `foo_.c' or `sub/foo.c'.
1315 my $objdir = dirname ($obj);
1316 my $srcdir = dirname ($source);
1317 if ($lang->ansi && $obj =~ /\$U/)
1318 {
1319 prog_error "`$obj' contains \$U, but `$source' doesn't."
1320 if $source !~ /\$U/;
1322 (my $source_ = $source) =~ s/\$U/_/g;
1323 # Output an additional rule if _.c and .c are not in
1324 # the same directory. (_.c is always in $objdir.)
1325 if ($objdir ne $srcdir)
1326 {
1327 (my $obj_ = $obj) =~ s/\$U/_/g;
1328 (my $depbase_ = $depbase) =~ s/\$U/_/g;
1329 $source_ = basename ($source_);
1331 $output_rules .=
1332 file_contents ($rule_file,
1333 new Automake::Location,
1334 %transform,
1335 GENERIC => 0,
1337 DEPBASE => $depbase_,
1338 BASE => $obj_,
1339 SOURCE => $source_,
1340 OBJ => "$obj_$myext",
1341 OBJOBJ => "$obj_.obj",
1342 LTOBJ => "$obj_.lo",
1344 COMPILE => $obj_compile,
1345 LTCOMPILE => $obj_ltcompile,
1346 -o => $output_flag,
1347 %file_transform);
1348 $obj =~ s/\$U//g;
1349 $depbase =~ s/\$U//g;
1350 $source =~ s/\$U//g;
1351 }
1352 }
1354 $output_rules .=
1355 file_contents ($rule_file,
1356 new Automake::Location,
1357 %transform,
1358 GENERIC => 0,
1360 DEPBASE => $depbase,
1361 BASE => $obj,
1362 SOURCE => $source,
1363 # Use $myext and not `.o' here, in case
1364 # we are actually building a new source
1365 # file -- e.g. via yacc.
1366 OBJ => "$obj$myext",
1367 OBJOBJ => "$obj.obj",
1368 LTOBJ => "$obj.lo",
1370 COMPILE => $obj_compile,
1371 LTCOMPILE => $obj_ltcompile,
1372 -o => $output_flag,
1373 %file_transform);
1374 }
1376 # The rest of the loop is done once per language.
1377 next if defined $done{$lang};
1378 $done{$lang} = 1;
1380 # Load the language dependent Makefile chunks.
1381 my %lang = map { uc ($_) => 0 } keys %languages;
1382 $lang{uc ($lang->name)} = 1;
1383 $output_rules .= file_contents ('lang-compile',
1384 new Automake::Location,
1385 %transform, %lang);
1387 # If the source to a program consists entirely of code from a
1388 # `pure' language, for instance C++ for Fortran 77, then we
1389 # don't need the C compiler code. However if we run into
1390 # something unusual then we do generate the C code. There are
1391 # probably corner cases here that do not work properly.
1392 # People linking Java code to Fortran code deserve pain.
1393 $needs_c ||= ! $lang->pure;
1395 define_compiler_variable ($lang)
1396 if ($lang->compile);
1398 define_linker_variable ($lang)
1399 if ($lang->link);
1401 require_variables ("$am_file.am", $lang->Name . " source seen",
1402 TRUE, @{$lang->config_vars});
1404 # Call the finisher.
1405 $lang->finish;
1407 # Flags listed in `->flags' are user variables (per GNU Standards),
1408 # they should not be overridden in the Makefile...
1409 my @dont_override = @{$lang->flags};
1410 # ... and so is LDFLAGS.
1411 push @dont_override, 'LDFLAGS' if $lang->link;
1413 foreach my $flag (@dont_override)
1414 {
1415 my $var = var $flag;
1416 if ($var)
1417 {
1418 for my $cond ($var->conditions->conds)
1419 {
1420 if ($var->rdef ($cond)->owner == VAR_MAKEFILE)
1421 {
1422 msg_cond_var ('gnu', $cond, $flag,
1423 "`$flag' is a user variable, "
1424 . "you should not override it;\n"
1425 . "use `AM_$flag' instead.");
1426 }
1427 }
1428 }
1429 }
1430 }
1432 # If the project is entirely C++ or entirely Fortran 77 (i.e., 1
1433 # suffix rule was learned), don't bother with the C stuff. But if
1434 # anything else creeps in, then use it.
1435 $needs_c = 1
1436 if $need_link || suffix_rules_count > 1;
1438 if ($needs_c)
1439 {
1440 &define_compiler_variable ($languages{'c'})
1441 unless defined $done{$languages{'c'}};
1442 define_linker_variable ($languages{'c'});
1443 }
1444 }
1446 # Check to make sure a source defined in LIBOBJS is not explicitly
1447 # mentioned. This is a separate function (as opposed to being inlined
1448 # in handle_source_transform) because it isn't always appropriate to
1449 # do this check.
1450 sub check_libobjs_sources
1451 {
1452 my ($one_file, $unxformed) = @_;
1454 foreach my $prefix ('', 'EXTRA_', 'dist_', 'nodist_',
1455 'dist_EXTRA_', 'nodist_EXTRA_')
1456 {
1457 my @files;
1458 my $varname = $prefix . $one_file . '_SOURCES';
1459 my $var = var ($varname);
1460 if ($var)
1461 {
1462 @files = $var->value_as_list_recursive;
1463 }
1464 elsif ($prefix eq '')
1465 {
1466 @files = ($unxformed . '.c');
1467 }
1468 else
1469 {
1470 next;
1471 }
1473 foreach my $file (@files)
1474 {
1475 err_var ($prefix . $one_file . '_SOURCES',
1476 "automatically discovered file `$file' should not" .
1477 " be explicitly mentioned")
1478 if defined $libsources{$file};
1479 }
1480 }
1481 }
1484 # @OBJECTS
1485 # handle_single_transform ($VAR, $TOPPARENT, $DERIVED, $OBJ, $FILE, %TRANSFORM)
1486 # -----------------------------------------------------------------------------
1487 # Does much of the actual work for handle_source_transform.
1488 # Arguments are:
1489 # $VAR is the name of the variable that the source filenames come from
1490 # $TOPPARENT is the name of the _SOURCES variable which is being processed
1491 # $DERIVED is the name of resulting executable or library
1492 # $OBJ is the object extension (e.g., `$U.lo')
1493 # $FILE the source file to transform
1494 # %TRANSFORM contains extras arguments to pass to file_contents
1495 # when producing explicit rules
1496 # Result is a list of the names of objects
1497 # %linkers_used will be updated with any linkers needed
1498 sub handle_single_transform ($$$$$%)
1499 {
1500 my ($var, $topparent, $derived, $obj, $_file, %transform) = @_;
1501 my @files = ($_file);
1502 my @result = ();
1503 my $nonansi_obj = $obj;
1504 $nonansi_obj =~ s/\$U//g;
1506 # Turn sources into objects. We use a while loop like this
1507 # because we might add to @files in the loop.
1508 while (scalar @files > 0)
1509 {
1510 $_ = shift @files;
1512 # Configure substitutions in _SOURCES variables are errors.
1513 if (/^\@.*\@$/)
1514 {
1515 my $parent_msg = '';
1516 $parent_msg = "\nand is referred to from `$topparent'"
1517 if $topparent ne $var->name;
1518 err_var ($var,
1519 "`" . $var->name . "' includes configure substitution `$_'"
1520 . $parent_msg . ";\nconfigure " .
1521 "substitutions are not allowed in _SOURCES variables");
1522 next;
1523 }
1525 # If the source file is in a subdirectory then the `.o' is put
1526 # into the current directory, unless the subdir-objects option
1527 # is in effect.
1529 # Split file name into base and extension.
1530 next if ! /^(?:(.*)\/)?([^\/]*)($KNOWN_EXTENSIONS_PATTERN)$/;
1531 my $full = $_;
1532 my $directory = $1 || '';
1533 my $base = $2;
1534 my $extension = $3;
1536 # We must generate a rule for the object if it requires its own flags.
1537 my $renamed = 0;
1538 my ($linker, $object);
1540 # This records whether we've seen a derived source file (e.g.
1541 # yacc output).
1542 my $derived_source = 0;
1544 # This holds the `aggregate context' of the file we are
1545 # currently examining. If the file is compiled with
1546 # per-object flags, then it will be the name of the object.
1547 # Otherwise it will be `AM'. This is used by the target hook
1548 # language function.
1549 my $aggregate = 'AM';
1551 $extension = &derive_suffix ($extension, $nonansi_obj);
1552 my $lang;
1553 if ($extension_map{$extension} &&
1554 ($lang = $languages{$extension_map{$extension}}))
1555 {
1556 # Found the language, so see what it says.
1557 &saw_extension ($extension);
1559 # Do we have per-executable flags for this executable?
1560 my $have_per_exec_flags = 0;
1561 foreach my $flag (@{$lang->flags})
1562 {
1563 if (set_seen ("${derived}_$flag"))
1564 {
1565 $have_per_exec_flags = 1;
1566 last;
1567 }
1568 }
1570 # Note: computed subr call. The language rewrite function
1571 # should return one of the LANG_* constants. It could
1572 # also return a list whose first value is such a constant
1573 # and whose second value is a new source extension which
1574 # should be applied. This means this particular language
1575 # generates another source file which we must then process
1576 # further.
1577 my $subr = \&{'lang_' . $lang->name . '_rewrite'};
1578 my ($r, $source_extension)
1579 = &$subr ($directory, $base, $extension,
1580 $nonansi_obj, $have_per_exec_flags, $var);
1581 # Skip this entry if we were asked not to process it.
1582 next if $r == LANG_IGNORE;
1584 # Now extract linker and other info.
1585 $linker = $lang->linker;
1587 my $this_obj_ext;
1588 if (defined $source_extension)
1589 {
1590 $this_obj_ext = $source_extension;
1591 $derived_source = 1;
1592 }
1593 elsif ($lang->ansi)
1594 {
1595 $this_obj_ext = $obj;
1596 }
1597 else
1598 {
1599 $this_obj_ext = $nonansi_obj;
1600 }
1601 $object = $base . $this_obj_ext;
1603 if ($have_per_exec_flags)
1604 {
1605 # We have a per-executable flag in effect for this
1606 # object. In this case we rewrite the object's
1607 # name to ensure it is unique.
1609 # We choose the name `DERIVED_OBJECT' to ensure
1610 # (1) uniqueness, and (2) continuity between
1611 # invocations. However, this will result in a
1612 # name that is too long for losing systems, in
1613 # some situations. So we provide _SHORTNAME to
1614 # override.
1616 my $dname = $derived;
1617 my $var = var ($derived . '_SHORTNAME');
1618 if ($var)
1619 {
1620 # FIXME: should use the same Condition as
1621 # the _SOURCES variable. But this is really
1622 # silly overkill -- nobody should have
1623 # conditional shortnames.
1624 $dname = $var->variable_value;
1625 }
1626 $object = $dname . '-' . $object;
1628 prog_error ($lang->name . " flags defined without compiler")
1629 if ! defined $lang->compile;
1631 $renamed = 1;
1632 }
1634 # If rewrite said it was ok, put the object into a
1635 # subdir.
1636 if ($r == LANG_SUBDIR && $directory ne '')
1637 {
1638 $object = $directory . '/' . $object;
1639 }
1641 # If the object file has been renamed (because per-target
1642 # flags are used) we cannot compile the file with an
1643 # inference rule: we need an explicit rule.
1644 #
1645 # If the source is in a subdirectory and the object is in
1646 # the current directory, we also need an explicit rule.
1647 #
1648 # If both source and object files are in a subdirectory
1649 # (this happens when the subdir-objects option is used),
1650 # then the inference will work.
1651 #
1652 # The latter case deserves a historical note. When the
1653 # subdir-objects option was added on 1999-04-11 it was
1654 # thought that inferences rules would work for
1655 # subdirectory objects too. Later, on 1999-11-22,
1656 # automake was changed to output explicit rules even for
1657 # subdir-objects. Nobody remembers why, but this occured
1658 # soon after the merge of the user-dep-gen-branch so it
1659 # might be related. In late 2003 people complained about
1660 # the size of the generated Makefile.ins (libgcj, with
1661 # 2200+ subdir objects was reported to have a 9MB
1662 # Makefile), so we now rely on inference rules again.
1663 # Maybe we'll run across the same issue as in the past,
1664 # but at least this time we can document it. However since
1665 # dependency tracking has evolved it is possible that
1666 # our old problem no longer exists.
1667 # Using inference rules for subdir-objects has been tested
1668 # with GNU make, Solaris make, Ultrix make, BSD make,
1669 # HP-UX make, and OSF1 make successfully.
1670 if ($renamed
1671 || ($directory ne '' && ! option 'subdir-objects')
1672 # We must also use specific rules for a nodist_ source
1673 # if its language requests it.
1674 || ($lang->nodist_specific && ! $transform{'DIST_SOURCE'}))
1675 {
1676 my $obj_sans_ext = substr ($object, 0,
1677 - length ($this_obj_ext));
1678 my $full_ansi = $full;
1679 if ($lang->ansi && option 'ansi2knr')
1680 {
1681 $full_ansi =~ s/$KNOWN_EXTENSIONS_PATTERN$/\$U$&/;
1682 $obj_sans_ext .= '$U';
1683 }
1685 my @specifics = ($full_ansi, $obj_sans_ext,
1686 # Only use $this_obj_ext in the derived
1687 # source case because in the other case we
1688 # *don't* want $(OBJEXT) to appear here.
1689 ($derived_source ? $this_obj_ext : '.o'));
1691 # If we renamed the object then we want to use the
1692 # per-executable flag name. But if this is simply a
1693 # subdir build then we still want to use the AM_ flag
1694 # name.
1695 if ($renamed)
1696 {
1697 unshift @specifics, $derived;
1698 $aggregate = $derived;
1699 }
1700 else
1701 {
1702 unshift @specifics, 'AM';
1703 }
1705 # Each item on this list is a reference to a list consisting
1706 # of four values followed by additional transform flags for
1707 # file_contents. The four values are the derived flag prefix
1708 # (e.g. for `foo_CFLAGS', it is `foo'), the name of the
1709 # source file, the base name of the output file, and
1710 # the extension for the object file.
1711 push (@{$lang_specific_files{$lang->name}},
1712 [@specifics, %transform]);
1713 }
1714 }
1715 elsif ($extension eq $nonansi_obj)
1716 {
1717 # This is probably the result of a direct suffix rule.
1718 # In this case we just accept the rewrite.
1719 $object = "$base$extension";
1720 $linker = '';
1721 }
1722 else
1723 {
1724 # No error message here. Used to have one, but it was
1725 # very unpopular.
1726 # FIXME: we could potentially do more processing here,
1727 # perhaps treating the new extension as though it were a
1728 # new source extension (as above). This would require
1729 # more restructuring than is appropriate right now.
1730 next;
1731 }
1733 err_am "object `$object' created by `$full' and `$object_map{$object}'"
1734 if (defined $object_map{$object}
1735 && $object_map{$object} ne $full);
1737 my $comp_val = (($object =~ /\.lo$/)
1738 ? COMPILE_LIBTOOL : COMPILE_ORDINARY);
1739 (my $comp_obj = $object) =~ s/\.lo$/.\$(OBJEXT)/;
1740 if (defined $object_compilation_map{$comp_obj}
1741 && $object_compilation_map{$comp_obj} != 0
1742 # Only see the error once.
1743 && ($object_compilation_map{$comp_obj}
1744 != (COMPILE_LIBTOOL | COMPILE_ORDINARY))
1745 && $object_compilation_map{$comp_obj} != $comp_val)
1746 {
1747 err_am "object `$comp_obj' created both with libtool and without";
1748 }
1749 $object_compilation_map{$comp_obj} |= $comp_val;
1751 if (defined $lang)
1752 {
1753 # Let the language do some special magic if required.
1754 $lang->target_hook ($aggregate, $object, $full, %transform);
1755 }
1757 if ($derived_source)
1758 {
1759 prog_error ($lang->name . " has automatic dependency tracking")
1760 if $lang->autodep ne 'no';
1761 # Make sure this new source file is handled next. That will
1762 # make it appear to be at the right place in the list.
1763 unshift (@files, $object);
1764 # Distribute derived sources unless the source they are
1765 # derived from is not.
1766 &push_dist_common ($object)
1767 unless ($topparent =~ /^(?:nobase_)?nodist_/);
1768 next;
1769 }
1771 $linkers_used{$linker} = 1;
1773 push (@result, $object);
1775 if (! defined $object_map{$object})
1776 {
1777 my @dep_list = ();
1778 $object_map{$object} = $full;
1780 # If resulting object is in subdir, we need to make
1781 # sure the subdir exists at build time.
1782 if ($object =~ /\//)
1783 {
1784 # FIXME: check that $DIRECTORY is somewhere in the
1785 # project
1787 # For Java, the way we're handling it right now, a
1788 # `..' component doesn't make sense.
1789 if ($lang->name eq 'java' && $object =~ /(\/|^)\.\.\//)
1790 {
1791 err_am "`$full' should not contain a `..' component";
1792 }
1794 # Make sure object is removed by `make mostlyclean'.
1795 $compile_clean_files{$object} = MOSTLY_CLEAN;
1796 # If we have a libtool object then we also must remove
1797 # the ordinary .o.
1798 if ($object =~ /\.lo$/)
1799 {
1800 (my $xobj = $object) =~ s,lo$,\$(OBJEXT),;
1801 $compile_clean_files{$xobj} = MOSTLY_CLEAN;
1803 # Remove any libtool object in this directory.
1804 $libtool_clean_directories{$directory} = 1;
1805 }
1807 push (@dep_list, require_build_directory ($directory));
1809 # If we're generating dependencies, we also want
1810 # to make sure that the appropriate subdir of the
1811 # .deps directory is created.
1812 push (@dep_list,
1813 require_build_directory ($directory . '/$(DEPDIR)'))
1814 unless option 'no-dependencies';
1815 }
1817 &pretty_print_rule ($object . ':', "\t", @dep_list)
1818 if scalar @dep_list > 0;
1819 }
1821 # Transform .o or $o file into .P file (for automatic
1822 # dependency code).
1823 if ($lang && $lang->autodep ne 'no')
1824 {
1825 my $depfile = $object;
1826 $depfile =~ s/\.([^.]*)$/.P$1/;
1827 $depfile =~ s/\$\(OBJEXT\)$/o/;
1828 $dep_files{dirname ($depfile) . '/$(DEPDIR)/'
1829 . basename ($depfile)} = 1;
1830 }
1831 }
1833 return @result;
1834 }
1837 # $LINKER
1838 # define_objects_from_sources ($VAR, $OBJVAR, $NODEFINE, $ONE_FILE,
1839 # $OBJ, $PARENT, $TOPPARENT, $WHERE, %TRANSFORM)
1840 # ---------------------------------------------------------------------------
1841 # Define an _OBJECTS variable for a _SOURCES variable (or subvariable)
1842 #
1843 # Arguments are:
1844 # $VAR is the name of the _SOURCES variable
1845 # $OBJVAR is the name of the _OBJECTS variable if known (otherwise
1846 # it will be generated and returned).
1847 # $NODEFINE is a boolean: if true, $OBJVAR will not be defined (but
1848 # work done to determine the linker will be).
1849 # $ONE_FILE is the canonical (transformed) name of object to build
1850 # $OBJ is the object extension (i.e. either `.o' or `.lo').
1851 # $TOPPARENT is the _SOURCES variable being processed.
1852 # $WHERE context into which this definition is done
1853 # %TRANSFORM extra arguments to pass to file_contents when producing
1854 # rules
1855 #
1856 # Result is a pair ($LINKER, $OBJVAR):
1857 # $LINKER is a boolean, true if a linker is needed to deal with the objects
1858 sub define_objects_from_sources ($$$$$$$%)
1859 {
1860 my ($var, $objvar, $nodefine, $one_file,
1861 $obj, $topparent, $where, %transform) = @_;
1863 my $needlinker = "";
1865 transform_variable_recursively
1866 ($var, $objvar, 'am__objects', $nodefine, $where,
1867 # The transform code to run on each filename.
1868 sub {
1869 my ($subvar, $val, $cond, $full_cond) = @_;
1870 my @trans = handle_single_transform ($subvar, $topparent,
1871 $one_file, $obj, $val,
1872 %transform);
1873 $needlinker = "true" if @trans;
1874 return @trans;
1875 });
1877 return $needlinker;
1878 }
1881 # handle_source_transform ($CANON_TARGET, $TARGET, $OBJEXT, $WHERE, %TRANSFORM)
1882 # -----------------------------------------------------------------------------
1883 # Handle SOURCE->OBJECT transform for one program or library.
1884 # Arguments are:
1885 # canonical (transformed) name of target to build
1886 # actual target of object to build
1887 # object extension (i.e. either `.o' or `$o'.
1888 # location of the source variable
1889 # extra arguments to pass to file_contents when producing rules
1890 # Return result is name of linker variable that must be used.
1891 # Empty return means just use `LINK'.
1892 sub handle_source_transform ($$$$%)
1893 {
1894 # one_file is canonical name. unxformed is given name. obj is
1895 # object extension.
1896 my ($one_file, $unxformed, $obj, $where, %transform) = @_;
1898 my ($linker) = '';
1900 # No point in continuing if _OBJECTS is defined.
1901 return if reject_var ($one_file . '_OBJECTS',
1902 $one_file . '_OBJECTS should not be defined');
1904 my %used_pfx = ();
1905 my $needlinker;
1906 %linkers_used = ();
1907 foreach my $prefix ('', 'EXTRA_', 'dist_', 'nodist_',
1908 'dist_EXTRA_', 'nodist_EXTRA_')
1909 {
1910 my $varname = $prefix . $one_file . "_SOURCES";
1911 my $var = var $varname;
1912 next unless $var;
1914 # We are going to define _OBJECTS variables using the prefix.
1915 # Then we glom them all together. So we can't use the null
1916 # prefix here as we need it later.
1917 my $xpfx = ($prefix eq '') ? 'am_' : $prefix;
1919 # Keep track of which prefixes we saw.
1920 $used_pfx{$xpfx} = 1
1921 unless $prefix =~ /EXTRA_/;
1923 push @sources, "\$($varname)";
1924 push @dist_sources, shadow_unconditionally ($varname, $where)
1925 unless (option ('no-dist') || $prefix =~ /^nodist_/);
1927 $needlinker |=
1928 define_objects_from_sources ($varname,
1929 $xpfx . $one_file . '_OBJECTS',
1930 $prefix =~ /EXTRA_/,
1931 $one_file, $obj, $varname, $where,
1932 DIST_SOURCE => ($prefix !~ /^nodist_/),
1933 %transform);
1934 }
1935 if ($needlinker)
1936 {
1937 $linker ||= &resolve_linker (%linkers_used);
1938 }
1940 my @keys = sort keys %used_pfx;
1941 if (scalar @keys == 0)
1942 {
1943 # The default source for libfoo.la is libfoo.c, but for
1944 # backward compatibility we first look at libfoo_la.c
1945 my $old_default_source = "$one_file.c";
1946 (my $default_source = $unxformed) =~ s,(\.[^./\\]*)?$,.c,;
1947 if ($old_default_source ne $default_source
1948 && (rule $old_default_source
1949 || rule '$(srcdir)/' . $old_default_source
1950 || rule '${srcdir}/' . $old_default_source
1951 || -f $old_default_source))
1952 {
1953 my $loc = $where->clone;
1954 $loc->pop_context;
1955 msg ('obsolete', $loc,
1956 "the default source for `$unxformed' has been changed "
1957 . "to `$default_source'.\n(Using `$old_default_source' for "
1958 . "backward compatibility.)");
1959 $default_source = $old_default_source;
1960 }
1961 # If a rule exists to build this source with a $(srcdir)
1962 # prefix, use that prefix in our variables too. This is for
1963 # the sake of BSD Make.
1964 if (rule '$(srcdir)/' . $default_source
1965 || rule '${srcdir}/' . $default_source)
1966 {
1967 $default_source = '$(srcdir)/' . $default_source;
1968 }
1970 &define_variable ($one_file . "_SOURCES", $default_source, $where);
1971 push (@sources, $default_source);
1972 push (@dist_sources, $default_source);
1974 %linkers_used = ();
1975 my (@result) =
1976 handle_single_transform ($one_file . '_SOURCES',
1977 $one_file . '_SOURCES',
1978 $one_file, $obj,
1979 $default_source, %transform);
1980 $linker ||= &resolve_linker (%linkers_used);
1981 define_pretty_variable ($one_file . '_OBJECTS', TRUE, $where, @result);
1982 }
1983 else
1984 {
1985 @keys = map { '$(' . $_ . $one_file . '_OBJECTS)' } @keys;
1986 define_pretty_variable ($one_file . '_OBJECTS', TRUE, $where, @keys);
1987 }
1989 # If we want to use `LINK' we must make sure it is defined.
1990 if ($linker eq '')
1991 {
1992 $need_link = 1;
1993 }
1995 return $linker;
1996 }
1999 # handle_lib_objects ($XNAME, $VAR)
2000 # ---------------------------------
2001 # Special-case ALLOCA and LIBOBJS substitutions in _LDADD or _LIBADD variables.
2002 # Also, generate _DEPENDENCIES variable if appropriate.
2003 # Arguments are:
2004 # transformed name of object being built, or empty string if no object
2005 # name of _LDADD/_LIBADD-type variable to examine
2006 # Returns 1 if LIBOBJS seen, 0 otherwise.
2007 sub handle_lib_objects
2008 {
2009 my ($xname, $varname) = @_;
2011 my $var = var ($varname);
2012 prog_error "handle_lib_objects: `$varname' undefined"
2013 unless $var;
2014 prog_error "handle_lib_objects: unexpected variable name `$varname'"
2015 unless $varname =~ /^(.*)(?:LIB|LD)ADD$/;
2016 my $prefix = $1 || 'AM_';
2018 my $seen_libobjs = 0;
2019 my $flagvar = 0;
2021 transform_variable_recursively
2022 ($varname, $xname . '_DEPENDENCIES', 'am__DEPENDENCIES',
2023 ! $xname, INTERNAL,
2024 # Transformation function, run on each filename.
2025 sub {
2026 my ($subvar, $val, $cond, $full_cond) = @_;
2028 if ($val =~ /^-/)
2029 {
2030 # Skip -lfoo and -Ldir silently; these are explicitly allowed.
2031 if ($val !~ /^-[lL]/ &&
2032 # Skip -dlopen and -dlpreopen; these are explicitly allowed
2033 # for Libtool libraries or programs. (Actually we are a bit
2034 # laxest here since this code also applies to non-libtool
2035 # libraries or programs, for which -dlopen and -dlopreopen
2036 # are pure non-sence. Diagnosting this doesn't seems very
2037 # important: the developer will quickly get complaints from
2038 # the linker.)
2039 $val !~ /^-dl(?:pre)?open$/ &&
2040 # Only get this error once.
2041 ! $flagvar)
2042 {
2043 $flagvar = 1;
2044 # FIXME: should display a stack of nested variables
2045 # as context when $var != $subvar.
2046 err_var ($var, "linker flags such as `$val' belong in "
2047 . "`${prefix}LDFLAGS");
2048 }
2049 return ();
2050 }
2051 elsif ($val !~ /^\@.*\@$/)
2052 {
2053 # Assume we have a file of some sort, and output it into the
2054 # dependency variable. Autoconf substitutions are not output;
2055 # rarely is a new dependency substituted into e.g. foo_LDADD
2056 # -- but bad things (e.g. -lX11) are routinely substituted.
2057 # Note that LIBOBJS and ALLOCA are exceptions to this rule,
2058 # and handled specially below.
2059 return $val;
2060 }
2061 elsif ($val =~ /^\@(LT)?LIBOBJS\@$/)
2062 {
2063 handle_LIBOBJS ($subvar, $cond, $1);
2064 $seen_libobjs = 1;
2065 return $val;
2066 }
2067 elsif ($val =~ /^\@(LT)?ALLOCA\@$/)
2068 {
2069 handle_ALLOCA ($subvar, $cond, $1);
2070 return $val;
2071 }
2072 else
2073 {
2074 return ();
2075 }
2076 });
2078 return $seen_libobjs;
2079 }
2081 sub handle_LIBOBJS ($$$)
2082 {
2083 my ($var, $cond, $lt) = @_;
2084 $lt ||= '';
2085 my $myobjext = ($1 ? 'l' : '') . 'o';
2087 $var->requires_variables ("\@${lt}LIBOBJS\@ used", $lt . 'LIBOBJS')
2088 if ! keys %libsources;
2090 foreach my $iter (keys %libsources)
2091 {
2092 if ($iter =~ /\.[cly]$/)
2093 {
2094 &saw_extension ($&);
2095 &saw_extension ('.c');
2096 }
2098 if ($iter =~ /\.h$/)
2099 {
2100 require_file_with_macro ($cond, $var, FOREIGN, $iter);
2101 }
2102 elsif ($iter ne 'alloca.c')
2103 {
2104 my $rewrite = $iter;
2105 $rewrite =~ s/\.c$/.P$myobjext/;
2106 $dep_files{'$(DEPDIR)/' . $rewrite} = 1;
2107 $rewrite = "^" . quotemeta ($iter) . "\$";
2108 # Only require the file if it is not a built source.
2109 my $bs = var ('BUILT_SOURCES');
2110 if (! $bs || ! grep (/$rewrite/, $bs->value_as_list_recursive))
2111 {
2112 require_file_with_macro ($cond, $var, FOREIGN, $iter);
2113 }
2114 }
2115 }
2116 }
2118 sub handle_ALLOCA ($$$)
2119 {
2120 my ($var, $cond, $lt) = @_;
2121 my $myobjext = ($lt ? 'l' : '') . 'o';
2122 $lt ||= '';
2123 $var->requires_variables ("\@${lt}ALLOCA\@ used", $lt . 'ALLOCA');
2124 $dep_files{'$(DEPDIR)/alloca.P' . $myobjext} = 1;
2125 require_file_with_macro ($cond, $var, FOREIGN, 'alloca.c');
2126 &saw_extension ('c');
2127 }
2129 # Canonicalize the input parameter
2130 sub canonicalize
2131 {
2132 my ($string) = @_;
2133 $string =~ tr/A-Za-z0-9_\@/_/c;
2134 return $string;
2135 }
2137 # Canonicalize a name, and check to make sure the non-canonical name
2138 # is never used. Returns canonical name. Arguments are name and a
2139 # list of suffixes to check for.
2140 sub check_canonical_spelling
2141 {
2142 my ($name, @suffixes) = @_;
2144 my $xname = &canonicalize ($name);
2145 if ($xname ne $name)
2146 {
2147 foreach my $xt (@suffixes)
2148 {
2149 reject_var ("$name$xt", "use `$xname$xt', not `$name$xt'");
2150 }
2151 }
2153 return $xname;
2154 }
2157 # handle_compile ()
2158 # -----------------
2159 # Set up the compile suite.
2160 sub handle_compile ()
2161 {
2162 return
2163 unless $get_object_extension_was_run;
2165 # Boilerplate.
2166 my $default_includes = '';
2167 if (! option 'nostdinc')
2168 {
2169 $default_includes = ' -I. -I$(srcdir)';
2171 my $var = var 'CONFIG_HEADER';
2172 if ($var)
2173 {
2174 foreach my $hdr (split (' ', $var->variable_value))
2175 {
2176 $default_includes .= ' -I' . dirname ($hdr);
2177 }
2178 }
2179 }
2181 my (@mostly_rms, @dist_rms);
2182 foreach my $item (sort keys %compile_clean_files)
2183 {
2184 if ($compile_clean_files{$item} == MOSTLY_CLEAN)
2185 {
2186 push (@mostly_rms, "\t-rm -f $item");
2187 }
2188 elsif ($compile_clean_files{$item} == DIST_CLEAN)
2189 {
2190 push (@dist_rms, "\t-rm -f $item");
2191 }
2192 else
2193 {
2194 prog_error 'invalid entry in %compile_clean_files';
2195 }
2196 }
2198 my ($coms, $vars, $rules) =
2199 &file_contents_internal (1, "$libdir/am/compile.am",
2200 new Automake::Location,
2201 ('DEFAULT_INCLUDES' => $default_includes,
2202 'MOSTLYRMS' => join ("\n", @mostly_rms),
2203 'DISTRMS' => join ("\n", @dist_rms)));
2204 $output_vars .= $vars;
2205 $output_rules .= "$coms$rules";
2207 # Check for automatic de-ANSI-fication.
2208 if (option 'ansi2knr')
2209 {
2210 my ($ansi2knr_filename, $ansi2knr_where) = @{option 'ansi2knr'};
2211 my $ansi2knr_dir = '';
2213 require_variables ($ansi2knr_where, "option `ansi2knr' is used",
2214 TRUE, "ANSI2KNR", "U");
2216 # topdir is where ansi2knr should be.
2217 if ($ansi2knr_filename eq 'ansi2knr')
2218 {
2219 # Only require ansi2knr files if they should appear in
2220 # this directory.
2221 require_file ($ansi2knr_where, FOREIGN,
2222 'ansi2knr.c', 'ansi2knr.1');
2224 # ansi2knr needs to be built before subdirs, so unshift it.
2225 unshift (@all, '$(ANSI2KNR)');
2226 }
2227 else
2228 {
2229 $ansi2knr_dir = dirname ($ansi2knr_filename);
2230 }
2232 $output_rules .= &file_contents ('ansi2knr',
2233 new Automake::Location,
2234 'ANSI2KNR-DIR' => $ansi2knr_dir);
2236 }
2237 }
2239 # handle_libtool ()
2240 # -----------------
2241 # Handle libtool rules.
2242 sub handle_libtool
2243 {
2244 return unless var ('LIBTOOL');
2246 # Libtool requires some files, but only at top level.
2247 # (Starting with Libtool 2.0 we do not have to bother. These
2248 # requirements are done with AC_REQUIRE_AUX_FILE.)
2249 require_conf_file_with_macro (TRUE, 'LIBTOOL', FOREIGN, @libtool_files)
2250 if $relative_dir eq '.' && ! $libtool_new_api;
2252 my @libtool_rms;
2253 foreach my $item (sort keys %libtool_clean_directories)
2254 {
2255 my $dir = ($item eq '.') ? '' : "$item/";
2256 # .libs is for Unix, _libs for DOS.
2257 push (@libtool_rms, "\t-rm -rf ${dir}.libs ${dir}_libs");
2258 }
2260 # Output the libtool compilation rules.
2261 $output_rules .= &file_contents ('libtool',
2262 new Automake::Location,
2263 LTRMS => join ("\n", @libtool_rms));
2264 }
2266 # handle_programs ()
2267 # ------------------
2268 # Handle C programs.
2269 sub handle_programs
2270 {
2271 my @proglist = &am_install_var ('progs', 'PROGRAMS',
2272 'bin', 'sbin', 'libexec', 'pkglib',
2273 'noinst', 'check');
2274 return if ! @proglist;
2276 my $seen_global_libobjs =
2277 var ('LDADD') && &handle_lib_objects ('', 'LDADD');
2279 foreach my $pair (@proglist)
2280 {
2281 my ($where, $one_file) = @$pair;
2283 my $seen_libobjs = 0;
2284 my $obj = &get_object_extension ($one_file);
2286 # Strip any $(EXEEXT) suffix the user might have added, or this
2287 # will confuse &handle_source_transform and &check_canonical_spelling.
2288 # We'll add $(EXEEXT) back later anyway.
2289 $one_file =~ s/\$\(EXEEXT\)$//;
2291 # Canonicalize names and check for misspellings.
2292 my $xname = &check_canonical_spelling ($one_file, '_LDADD', '_LDFLAGS',
2293 '_SOURCES', '_OBJECTS',
2294 '_DEPENDENCIES');
2296 $where->push_context ("while processing program `$one_file'");
2297 $where->set (INTERNAL->get);
2299 my $linker = &handle_source_transform ($xname, $one_file, $obj, $where,
2300 NONLIBTOOL => 1, LIBTOOL => 0);
2302 if (var ($xname . "_LDADD"))
2303 {
2304 $seen_libobjs = &handle_lib_objects ($xname, $xname . '_LDADD');
2305 }
2306 else
2307 {
2308 # User didn't define prog_LDADD override. So do it.
2309 &define_variable ($xname . '_LDADD', '$(LDADD)', $where);
2311 # This does a bit too much work. But we need it to
2312 # generate _DEPENDENCIES when appropriate.
2313 if (var ('LDADD'))
2314 {
2315 $seen_libobjs = &handle_lib_objects ($xname, 'LDADD');
2316 }
2317 }
2319 reject_var ($xname . '_LIBADD',
2320 "use `${xname}_LDADD', not `${xname}_LIBADD'");
2322 set_seen ($xname . '_DEPENDENCIES');
2323 set_seen ($xname . '_LDFLAGS');
2325 # Determine program to use for link.
2326 my $xlink;
2327 if (var ($xname . '_LINK'))
2328 {
2329 $xlink = $xname . '_LINK';
2330 }
2331 else
2332 {
2333 $xlink = $linker ? $linker : 'LINK';
2334 }
2336 # If the resulting program lies into a subdirectory,
2337 # make sure this directory will exist.
2338 my $dirstamp = require_build_directory_maybe ($one_file);
2340 $output_rules .= &file_contents ('program',
2341 $where,
2342 PROGRAM => $one_file,
2343 XPROGRAM => $xname,
2344 XLINK => $xlink,
2345 DIRSTAMP => $dirstamp,
2346 EXEEXT => '$(EXEEXT)');
2348 if ($seen_libobjs || $seen_global_libobjs)
2349 {
2350 if (var ($xname . '_LDADD'))
2351 {
2352 &check_libobjs_sources ($xname, $xname . '_LDADD');
2353 }
2354 elsif (var ('LDADD'))
2355 {
2356 &check_libobjs_sources ($xname, 'LDADD');
2357 }
2358 }
2359 }
2360 }
2363 # handle_libraries ()
2364 # -------------------
2365 # Handle libraries.
2366 sub handle_libraries
2367 {
2368 my @liblist = &am_install_var ('libs', 'LIBRARIES',
2369 'lib', 'pkglib', 'noinst', 'check');
2370 return if ! @liblist;
2372 my @prefix = am_primary_prefixes ('LIBRARIES', 0, 'lib', 'pkglib',
2373 'noinst', 'check');
2375 if (@prefix)
2376 {
2377 my $var = rvar ($prefix[0] . '_LIBRARIES');
2378 $var->requires_variables ('library used', 'RANLIB');
2379 }
2381 &define_variable ('AR', 'ar', INTERNAL);
2382 &define_variable ('ARFLAGS', 'cru', INTERNAL);
2384 foreach my $pair (@liblist)
2385 {
2386 my ($where, $onelib) = @$pair;
2388 my $seen_libobjs = 0;
2389 # Check that the library fits the standard naming convention.
2390 my $bn = basename ($onelib);
2391 if ($bn !~ /^lib.*\.a$/)
2392 {
2393 $bn =~ s/^(?:lib)?(.*?)(?:\.[^.]*)?$/lib$1.a/;
2394 my $suggestion = dirname ($onelib) . "/$bn";
2395 $suggestion =~ s|^\./||g;
2396 msg ('error-gnu/warn', $where,
2397 "`$onelib' is not a standard library name\n"
2398 . "did you mean `$suggestion'?")
2399 }
2401 $where->push_context ("while processing library `$onelib'");
2402 $where->set (INTERNAL->get);
2404 my $obj = &get_object_extension ($onelib);
2406 # Canonicalize names and check for misspellings.
2407 my $xlib = &check_canonical_spelling ($onelib, '_LIBADD', '_SOURCES',
2408 '_OBJECTS', '_DEPENDENCIES',
2409 '_AR');
2411 if (! var ($xlib . '_AR'))
2412 {
2413 &define_variable ($xlib . '_AR', '$(AR) $(ARFLAGS)', $where);
2414 }
2416 # Generate support for conditional object inclusion in
2417 # libraries.
2418 if (var ($xlib . '_LIBADD'))
2419 {
2420 if (&handle_lib_objects ($xlib, $xlib . '_LIBADD'))
2421 {
2422 $seen_libobjs = 1;
2423 }
2424 }
2425 else
2426 {
2427 &define_variable ($xlib . "_LIBADD", '', $where);
2428 }
2430 reject_var ($xlib . '_LDADD',
2431 "use `${xlib}_LIBADD', not `${xlib}_LDADD'");
2433 # Make sure we at look at this.
2434 set_seen ($xlib . '_DEPENDENCIES');
2436 &handle_source_transform ($xlib, $onelib, $obj, $where,
2437 NONLIBTOOL => 1, LIBTOOL => 0);
2439 # If the resulting library lies into a subdirectory,
2440 # make sure this directory will exist.
2441 my $dirstamp = require_build_directory_maybe ($onelib);
2443 $output_rules .= &file_contents ('library',
2444 $where,
2445 LIBRARY => $onelib,
2446 XLIBRARY => $xlib,
2447 DIRSTAMP => $dirstamp);
2449 if ($seen_libobjs)
2450 {
2451 if (var ($xlib . '_LIBADD'))
2452 {
2453 &check_libobjs_sources ($xlib, $xlib . '_LIBADD');
2454 }
2455 }
2456 }
2457 }
2460 # handle_ltlibraries ()
2461 # ---------------------
2462 # Handle shared libraries.
2463 sub handle_ltlibraries
2464 {
2465 my @liblist = &am_install_var ('ltlib', 'LTLIBRARIES',
2466 'noinst', 'lib', 'pkglib', 'check');
2467 return if ! @liblist;
2469 my @prefix = am_primary_prefixes ('LTLIBRARIES', 0, 'lib', 'pkglib',
2470 'noinst', 'check');
2472 if (@prefix)
2473 {
2474 my $var = rvar ($prefix[0] . '_LTLIBRARIES');
2475 $var->requires_variables ('Libtool library used', 'LIBTOOL');
2476 }
2478 my %instdirs = ();
2479 my %instconds = ();
2480 my %liblocations = (); # Location (in Makefile.am) of each library.
2482 foreach my $key (@prefix)
2483 {
2484 # Get the installation directory of each library.
2485 (my $dir = $key) =~ s/^nobase_//;
2486 my $var = rvar ($key . '_LTLIBRARIES');
2488 # We reject libraries which are installed in several places
2489 # in the same condition, because we can only specify one
2490 # `-rpath' option.
2491 $var->traverse_recursively
2492 (sub
2493 {
2494 my ($var, $val, $cond, $full_cond) = @_;
2495 my $hcond = $full_cond->human;
2496 my $where = $var->rdef ($cond)->location;
2497 # A library cannot be installed in different directory
2498 # in overlapping conditions.
2499 if (exists $instconds{$val})
2500 {
2501 my ($msg, $acond) =
2502 $instconds{$val}->ambiguous_p ($val, $full_cond);
2504 if ($msg)
2505 {
2506 error ($where, $msg, partial => 1);
2508 my $dirtxt = "installed in `$dir'";
2509 $dirtxt = "built for `$dir'"
2510 if $dir eq 'EXTRA' || $dir eq 'noinst' || $dir eq 'check';
2511 my $dircond =
2512 $full_cond->true ? "" : " in condition $hcond";
2514 error ($where, "`$val' should be $dirtxt$dircond ...",
2515 partial => 1);
2517 my $hacond = $acond->human;
2518 my $adir = $instdirs{$val}{$acond};
2519 my $adirtxt = "installed in `$adir'";
2520 $adirtxt = "built for `$adir'"
2521 if ($adir eq 'EXTRA' || $adir eq 'noinst'
2522 || $adir eq 'check');
2523 my $adircond = $acond->true ? "" : " in condition $hacond";
2525 my $onlyone = ($dir ne $adir) ?
2526 ("\nLibtool libraries can be built for only one "
2527 . "destination.") : "";
2529 error ($liblocations{$val}{$acond},
2530 "... and should also be $adirtxt$adircond.$onlyone");
2531 return;
2532 }
2533 }
2534 else
2535 {
2536 $instconds{$val} = new Automake::DisjConditions;
2537 }
2538 $instdirs{$val}{$full_cond} = $dir;
2539 $liblocations{$val}{$full_cond} = $where;
2540 $instconds{$val} = $instconds{$val}->merge ($full_cond);
2541 },
2542 sub
2543 {
2544 return ();
2545 },
2546 skip_ac_subst => 1);
2547 }
2549 foreach my $pair (@liblist)
2550 {
2551 my ($where, $onelib) = @$pair;
2553 my $seen_libobjs = 0;
2554 my $obj = &get_object_extension ($onelib);
2556 # Canonicalize names and check for misspellings.
2557 my $xlib = &check_canonical_spelling ($onelib, '_LIBADD', '_LDFLAGS',
2558 '_SOURCES', '_OBJECTS',
2559 '_DEPENDENCIES');
2561 # Check that the library fits the standard naming convention.
2562 my $libname_rx = '^lib.*\.la';
2563 my $ldvar = var ("${xlib}_LDFLAGS") || var ('AM_LDFLAGS');
2564 my $ldvar2 = var ('LDFLAGS');
2565 if (($ldvar && grep (/-module/, $ldvar->value_as_list_recursive))
2566 || ($ldvar2 && grep (/-module/, $ldvar2->value_as_list_recursive)))
2567 {
2568 # Relax name checking for libtool modules.
2569 $libname_rx = '\.la';
2570 }
2572 my $bn = basename ($onelib);
2573 if ($bn !~ /$libname_rx$/)
2574 {
2575 my $type = 'library';
2576 if ($libname_rx eq '\.la')
2577 {
2578 $bn =~ s/^(lib|)(.*?)(?:\.[^.]*)?$/$1$2.la/;
2579 $type = 'module';
2580 }
2581 else
2582 {
2583 $bn =~ s/^(?:lib)?(.*?)(?:\.[^.]*)?$/lib$1.la/;
2584 }
2585 my $suggestion = dirname ($onelib) . "/$bn";
2586 $suggestion =~ s|^\./||g;
2587 msg ('error-gnu/warn', $where,
2588 "`$onelib' is not a standard libtool $type name\n"
2589 . "did you mean `$suggestion'?")
2590 }
2592 $where->push_context ("while processing Libtool library `$onelib'");
2593 $where->set (INTERNAL->get);
2595 # Make sure we look at these.
2596 set_seen ($xlib . '_LDFLAGS');
2597 set_seen ($xlib . '_DEPENDENCIES');
2599 # Generate support for conditional object inclusion in
2600 # libraries.
2601 if (var ($xlib . '_LIBADD'))
2602 {
2603 if (&handle_lib_objects ($xlib, $xlib . '_LIBADD'))
2604 {
2605 $seen_libobjs = 1;
2606 }
2607 }
2608 else
2609 {
2610 &define_variable ($xlib . "_LIBADD", '', $where);
2611 }
2613 reject_var ("${xlib}_LDADD",
2614 "use `${xlib}_LIBADD', not `${xlib}_LDADD'");
2617 my $linker = &handle_source_transform ($xlib, $onelib, $obj, $where,
2618 NONLIBTOOL => 0, LIBTOOL => 1);
2620 # Determine program to use for link.
2621 my $xlink;
2622 if (var ($xlib . '_LINK'))
2623 {
2624 $xlink = $xlib . '_LINK';
2625 }
2626 else
2627 {
2628 $xlink = $linker ? $linker : 'LINK';
2629 }
2631 my $rpathvar = "am_${xlib}_rpath";
2632 my $rpath = "\$($rpathvar)";
2633 foreach my $rcond ($instconds{$onelib}->conds)
2634 {
2635 my $val;
2636 if ($instdirs{$onelib}{$rcond} eq 'EXTRA'
2637 || $instdirs{$onelib}{$rcond} eq 'noinst'
2638 || $instdirs{$onelib}{$rcond} eq 'check')
2639 {
2640 # It's an EXTRA_ library, so we can't specify -rpath,
2641 # because we don't know where the library will end up.
2642 # The user probably knows, but generally speaking automake
2643 # doesn't -- and in fact configure could decide
2644 # dynamically between two different locations.
2645 $val = '';
2646 }
2647 else
2648 {
2649 $val = ('-rpath $(' . $instdirs{$onelib}{$rcond} . 'dir)');
2650 }
2651 if ($rcond->true)
2652 {
2653 # If $rcond is true there is only one condition and
2654 # there is no point defining an helper variable.
2655 $rpath = $val;
2656 }
2657 else
2658 {
2659 define_pretty_variable ($rpathvar, $rcond, INTERNAL, $val);
2660 }
2661 }
2663 # If the resulting library lies into a subdirectory,
2664 # make sure this directory will exist.
2665 my $dirstamp = require_build_directory_maybe ($onelib);
2667 # Remember to cleanup .libs/ in this directory.
2668 my $dirname = dirname $onelib;
2669 $libtool_clean_directories{$dirname} = 1;
2671 $output_rules .= &file_contents ('ltlibrary',
2672 $where,
2673 LTLIBRARY => $onelib,
2674 XLTLIBRARY => $xlib,
2675 RPATH => $rpath,
2676 XLINK => $xlink,
2677 DIRSTAMP => $dirstamp);
2678 if ($seen_libobjs)
2679 {
2680 if (var ($xlib . '_LIBADD'))
2681 {
2682 &check_libobjs_sources ($xlib, $xlib . '_LIBADD');
2683 }
2684 }
2685 }
2686 }
2688 # See if any _SOURCES variable were misspelled.
2689 sub check_typos ()
2690 {
2691 # It is ok if the user sets this particular variable.
2692 set_seen 'AM_LDFLAGS';
2694 foreach my $primary ('SOURCES', 'LIBADD', 'LDADD', 'LDFLAGS', 'DEPENDENCIES')
2695 {
2696 foreach my $var (variables $primary)
2697 {
2698 my $varname = $var->name;
2699 # A configure variable is always legitimate.
2700 next if exists $configure_vars{$varname};
2702 for my $cond ($var->conditions->conds)
2703 {
2704 $varname =~ /^(?:nobase_)?(?:dist_|nodist_)?(.*)_[[:alnum:]]+$/;
2705 msg_var ('syntax', $var, "variable `$varname' is defined but no"
2706 . " program or\nlibrary has `$1' as canonic name"
2707 . " (possible typo)")
2708 unless $var->rdef ($cond)->seen;
2709 }
2710 }
2711 }
2712 }
2715 # Handle scripts.
2716 sub handle_scripts
2717 {
2718 # NOTE we no longer automatically clean SCRIPTS, because it is
2719 # useful to sometimes distribute scripts verbatim. This happens
2720 # e.g. in Automake itself.
2721 &am_install_var ('-candist', 'scripts', 'SCRIPTS',
2722 'bin', 'sbin', 'libexec', 'pkgdata',
2723 'noinst', 'check');
2724 }
2729 ## ------------------------ ##
2730 ## Handling Texinfo files. ##
2731 ## ------------------------ ##
2733 # ($OUTFILE, $VFILE, @CLEAN_FILES)
2734 # &scan_texinfo_file ($FILENAME)
2735 # ------------------------------
2736 # $OUTFILE - name of the info file produced by $FILENAME.
2737 # $VFILE - name of the version.texi file used (undef if none).
2738 # @CLEAN_FILES - list of byproducts (indexes etc.)
2739 sub scan_texinfo_file ($)
2740 {
2741 my ($filename) = @_;
2743 # Some of the following extensions are always created, no matter
2744 # whether indexes are used or not. Other (like cps, fns, ... pgs)
2745 # are only created when they are used. We used to scan $FILENAME
2746 # for their use, but that is not enough: they could be used in
2747 # included files. We can't scan included files because we don't
2748 # know the include path. Therefore we always erase these files, no
2749 # matter whether they are used or not.
2750 #
2751 # (tmp is only created if an @macro is used and a certain e-TeX
2752 # feature is not available.)
2753 my %clean_suffixes =
2754 map { $_ => 1 } (qw(aux log toc tmp
2755 cp cps
2756 fn fns
2757 ky kys
2758 vr vrs
2759 tp tps
2760 pg pgs)); # grep 'new.*index' texinfo.tex
2762 my $texi = new Automake::XFile "< $filename";
2763 verb "reading $filename";
2765 my ($outfile, $vfile);
2766 while ($_ = $texi->getline)
2767 {
2768 if (/^\@setfilename +(\S+)/)
2769 {
2770 # Honor only the first @setfilename. (It's possible to have
2771 # more occurrences later if the manual shows examples of how
2772 # to use @setfilename...)
2773 next if $outfile;
2775 $outfile = $1;
2776 if ($outfile =~ /\.(.+)$/ && $1 ne 'info')
2777 {
2778 error ("$filename:$.",
2779 "output `$outfile' has unrecognized extension");
2780 return;
2781 }
2782 }
2783 # A "version.texi" file is actually any file whose name matches
2784 # "vers*.texi".
2785 elsif (/^\@include\s+(vers[^.]*\.texi)\s*$/)
2786 {
2787 $vfile = $1;
2788 }
2790 # Try to find new or unused indexes.
2792 # Creating a new category of index.
2793 elsif (/^\@def(code)?index (\w+)/)
2794 {
2795 $clean_suffixes{$2} = 1;
2796 $clean_suffixes{"$2s"} = 1;
2797 }
2799 # Merging an index into an another.
2800 elsif (/^\@syn(code)?index (\w+) (\w+)/)
2801 {
2802 delete $clean_suffixes{"$2s"};
2803 $clean_suffixes{"$3s"} = 1;
2804 }
2806 }
2808 if (! $outfile)
2809 {
2810 err_am "`$filename' missing \@setfilename";
2811 return;
2812 }
2814 my $infobase = basename ($filename);
2815 $infobase =~ s/\.te?xi(nfo)?$//;
2816 return ($outfile, $vfile,
2817 map { "$infobase.$_" } (sort keys %clean_suffixes));
2818 }
2821 # ($DIRSTAMP, @CLEAN_FILES)
2822 # output_texinfo_build_rules ($SOURCE, $DEST, $INSRC, @DEPENDENCIES)
2823 # ------------------------------------------------------------------
2824 # SOURCE - the source Texinfo file
2825 # DEST - the destination Info file
2826 # INSRC - wether DEST should be built in the source tree
2827 # DEPENDENCIES - known dependencies
2828 sub output_texinfo_build_rules ($$$@)
2829 {
2830 my ($source, $dest, $insrc, @deps) = @_;
2832 # Split `a.texi' into `a' and `.texi'.
2833 my ($spfx, $ssfx) = ($source =~ /^(.*?)(\.[^.]*)?$/);
2834 my ($dpfx, $dsfx) = ($dest =~ /^(.*?)(\.[^.]*)?$/);
2836 $ssfx ||= "";
2837 $dsfx ||= "";
2839 # We can output two kinds of rules: the "generic" rules use Make
2840 # suffix rules and are appropriate when $source and $dest do not lie
2841 # in a sub-directory; the "specific" rules are needed in the other
2842 # case.
2843 #
2844 # The former are output only once (this is not really apparent here,
2845 # but just remember that some logic deeper in Automake will not
2846 # output the same rule twice); while the later need to be output for
2847 # each Texinfo source.
2848 my $generic;
2849 my $makeinfoflags;
2850 my $sdir = dirname $source;
2851 if ($sdir eq '.' && dirname ($dest) eq '.')
2852 {
2853 $generic = 1;
2854 $makeinfoflags = '-I $(srcdir)';
2855 }
2856 else
2857 {
2858 $generic = 0;
2859 $makeinfoflags = "-I $sdir -I \$(srcdir)/$sdir";
2860 }
2862 # A directory can contain two kinds of info files: some built in the
2863 # source tree, and some built in the build tree. The rules are
2864 # different in each case. However we cannot output two different
2865 # set of generic rules. Because in-source builds are more usual, we
2866 # use generic rules in this case and fall back to "specific" rules
2867 # for build-dir builds. (It should not be a problem to invert this
2868 # if needed.)
2869 $generic = 0 unless $insrc;
2871 # We cannot use a suffix rule to build info files with an empty
2872 # extension. Otherwise we would output a single suffix inference
2873 # rule, with separate dependencies, as in
2874 #
2875 # .texi:
2876 # $(MAKEINFO) ...
2877 # foo.info: foo.texi
2878 #
2879 # which confuse Solaris make. (See the Autoconf manual for
2880 # details.) Therefore we use a specific rule in this case. This
2881 # applies to info files only (dvi and pdf files always have an
2882 # extension).
2883 my $generic_info = ($generic && $dsfx) ? 1 : 0;
2885 # If the resulting file lie into a subdirectory,
2886 # make sure this directory will exist.
2887 my $dirstamp = require_build_directory_maybe ($dest);
2889 my $dipfx = ($insrc ? '$(srcdir)/' : '') . $dpfx;
2891 $output_rules .= file_contents ('texibuild',
2892 new Automake::Location,
2893 DEPS => "@deps",
2894 DEST_PREFIX => $dpfx,
2895 DEST_INFO_PREFIX => $dipfx,
2896 DEST_SUFFIX => $dsfx,
2897 DIRSTAMP => $dirstamp,
2898 GENERIC => $generic,
2899 GENERIC_INFO => $generic_info,
2900 INSRC => $insrc,
2901 MAKEINFOFLAGS => $makeinfoflags,
2902 SOURCE => ($generic
2903 ? '$<' : $source),
2904 SOURCE_INFO => ($generic_info
2905 ? '$<' : $source),
2906 SOURCE_REAL => $source,
2907 SOURCE_SUFFIX => $ssfx,
2908 );
2909 return ($dirstamp, "$dpfx.dvi", "$dpfx.pdf", "$dpfx.ps", "$dpfx.html");
2910 }
2913 # $TEXICLEANS
2914 # handle_texinfo_helper ($info_texinfos)
2915 # --------------------------------------
2916 # Handle all Texinfo source; helper for handle_texinfo.
2917 sub handle_texinfo_helper ($)
2918 {
2919 my ($info_texinfos) = @_;
2920 my (@infobase, @info_deps_list, @texi_deps);
2921 my %versions;
2922 my $done = 0;
2923 my @texi_cleans;
2925 # Build a regex matching user-cleaned files.
2926 my $d = var 'DISTCLEANFILES';
2927 my $c = var 'CLEANFILES';
2928 my @f = ();
2929 push @f, $d->value_as_list_recursive (inner_expand => 1) if $d;
2930 push @f, $c->value_as_list_recursive (inner_expand => 1) if $c;
2931 @f = map { s|[^A-Za-z_0-9*\[\]\-]|\\$&|g; s|\*|[^/]*|g; $_; } @f;
2932 my $user_cleaned_files = '^(?:' . join ('|', @f) . ')$';
2934 foreach my $texi
2935 ($info_texinfos->value_as_list_recursive (inner_expand => 1))
2936 {
2937 my $infobase = $texi;
2938 $infobase =~ s/\.(txi|texinfo|texi)$//;
2940 if ($infobase eq $texi)
2941 {
2942 # FIXME: report line number.
2943 err_am "texinfo file `$texi' has unrecognized extension";
2944 next;
2945 }
2947 push @infobase, $infobase;
2949 # If 'version.texi' is referenced by input file, then include
2950 # automatic versioning capability.
2951 my ($out_file, $vtexi, @clean_files) =
2952 scan_texinfo_file ("$relative_dir/$texi")
2953 or next;
2954 push (@texi_cleans, @clean_files);
2956 # If the Texinfo source is in a subdirectory, create the
2957 # resulting info in this subdirectory. If it is in the current
2958 # directory, try hard to not prefix "./" because it breaks the
2959 # generic rules.
2960 my $outdir = dirname ($texi) . '/';
2961 $outdir = "" if $outdir eq './';
2962 $out_file = $outdir . $out_file;
2964 # Until Automake 1.6.3, .info files were built in the
2965 # source tree. This was an obstacle to the support of
2966 # non-distributed .info files, and non-distributed .texi
2967 # files.
2968 #
2969 # * Non-distributed .texi files is important in some packages
2970 # where .texi files are built at make time, probably using
2971 # other binaries built in the package itself, maybe using
2972 # tools or information found on the build host. Because
2973 # these files are not distributed they are always rebuilt
2974 # at make time; they should therefore not lie in the source
2975 # directory. One plan was to support this using
2976 # nodist_info_TEXINFOS or something similar. (Doing this
2977 # requires some sanity checks. For instance Automake should
2978 # not allow:
2979 # dist_info_TEXINFO = foo.texi
2980 # nodist_foo_TEXINFO = included.texi
2981 # because a distributed file should never depend on a
2982 # non-distributed file.)
2983 #
2984 # * If .texi files are not distributed, then .info files should
2985 # not be distributed either. There are also cases where one
2986 # want to distribute .texi files, but do not want to
2987 # distribute the .info files. For instance the Texinfo package
2988 # distributes the tool used to build these files; it would
2989 # be a waste of space to distribute them. It's not clear
2990 # which syntax we should use to indicate that .info files should
2991 # not be distributed. Akim Demaille suggested that eventually
2992 # we switch to a new syntax:
2993 # | Maybe we should take some inspiration from what's already
2994 # | done in the rest of Automake. Maybe there is too much
2995 # | syntactic sugar here, and you want
2996 # | nodist_INFO = bar.info
2997 # | dist_bar_info_SOURCES = bar.texi
2998 # | bar_texi_DEPENDENCIES = foo.texi
2999 # | with a bit of magic to have bar.info represent the whole
3000 # | bar*info set. That's a lot more verbose that the current
3001 # | situation, but it is # not new, hence the user has less
3002 # | to learn.
3003 # |
3004 # | But there is still too much room for meaningless specs:
3005 # | nodist_INFO = bar.info
3006 # | dist_bar_info_SOURCES = bar.texi
3007 # | dist_PS = bar.ps something-written-by-hand.ps
3008 # | nodist_bar_ps_SOURCES = bar.texi
3009 # | bar_texi_DEPENDENCIES = foo.texi
3010 # | here bar.texi is dist_ in line 2, and nodist_ in 4.
3011 #
3012 # Back to the point, it should be clear that in order to support
3013 # non-distributed .info files, we need to build them in the
3014 # build tree, not in the source tree (non-distributed .texi
3015 # files are less of a problem, because we do not output build
3016 # rules for them). In Automake 1.7 .info build rules have been
3017 # largely cleaned up so that .info files get always build in the
3018 # build tree, even when distributed. The idea was that
3019 # (1) if during a VPATH build the .info file was found to be
3020 # absent or out-of-date (in the source tree or in the
3021 # build tree), Make would rebuild it in the build tree.
3022 # If an up-to-date source-tree of the .info file existed,
3023 # make would not rebuild it in the build tree.
3024 # (2) having two copies of .info files, one in the source tree
3025 # and one (newer) in the build tree is not a problem
3026 # because `make dist' always pick files in the build tree
3027 # first.
3028 # However it turned out the be a bad idea for several reasons:
3029 # * Tru64, OpenBSD, and FreeBSD (not NetBSD) Make do not behave
3030 # like GNU Make on point (1) above. These implementations
3031 # of Make would always rebuild .info files in the build
3032 # tree, even if such files were up to date in the source
3033 # tree. Consequently, it was impossible to perform a VPATH
3034 # build of a package containing Texinfo files using these
3035 # Make implementations.
3036 # (Refer to the Autoconf Manual, section "Limitation of
3037 # Make", paragraph "VPATH", item "target lookup", for
3038 # an account of the differences between these
3039 # implementations.)
3040 # * The GNU Coding Standards require these files to be built
3041 # in the source-tree (when they are distributed, that is).
3042 # * Keeping a fresher copy of distributed files in the
3043 # build tree can be annoying during development because
3044 # - if the files is kept under CVS, you really want it
3045 # to be updated in the source tree
3046 # - it is confusing that `make distclean' does not erase
3047 # all files in the build tree.
3048 #
3049 # Consequently, starting with Automake 1.8, .info files are
3050 # built in the source tree again. Because we still plan to
3051 # support non-distributed .info files at some point, we
3052 # have a single variable ($INSRC) that controls whether
3053 # the current .info file must be built in the source tree
3054 # or in the build tree. Actually this variable is switched
3055 # off for .info files that appear to be cleaned; this is
3056 # for backward compatibility with package such as Texinfo,
3057 # which do things like
3058 # info_TEXINFOS = texinfo.txi info-stnd.texi info.texi
3059 # DISTCLEANFILES = texinfo texinfo-* info*.info*
3060 # # Do not create info files for distribution.
3061 # dist-info:
3062 # in order not to distribute .info files.
3063 my $insrc = ($out_file =~ $user_cleaned_files) ? 0 : 1;
3065 my $soutdir = '$(srcdir)/' . $outdir;
3066 $outdir = $soutdir if $insrc;
3068 # If user specified file_TEXINFOS, then use that as explicit
3069 # dependency list.
3070 @texi_deps = ();
3071 push (@texi_deps, "$soutdir$vtexi") if $vtexi;
3073 my $canonical = canonicalize ($infobase);
3074 if (var ($canonical . "_TEXINFOS"))
3075 {
3076 push (@texi_deps, '$(' . $canonical . '_TEXINFOS)');
3077 push_dist_common ('$(' . $canonical . '_TEXINFOS)');
3078 }
3080 my ($dirstamp, @cfiles) =
3081 output_texinfo_build_rules ($texi, $out_file, $insrc, @texi_deps);
3082 push (@texi_cleans, @cfiles);
3084 push (@info_deps_list, $out_file);
3086 # If a vers*.texi file is needed, emit the rule.
3087 if ($vtexi)
3088 {
3089 err_am ("`$vtexi', included in `$texi', "
3090 . "also included in `$versions{$vtexi}'")
3091 if defined $versions{$vtexi};
3092 $versions{$vtexi} = $texi;
3094 # We number the stamp-vti files. This is doable since the
3095 # actual names don't matter much. We only number starting
3096 # with the second one, so that the common case looks nice.
3097 my $vti = ($done ? $done : 'vti');
3098 ++$done;
3100 # This is ugly, but it is our historical practice.
3101 if ($config_aux_dir_set_in_configure_ac)
3102 {
3103 require_conf_file_with_macro (TRUE, 'info_TEXINFOS', FOREIGN,
3104 'mdate-sh');
3105 }
3106 else
3107 {
3108 require_file_with_macro (TRUE, 'info_TEXINFOS',
3109 FOREIGN, 'mdate-sh');
3110 }
3112 my $conf_dir;
3113 if ($config_aux_dir_set_in_configure_ac)
3114 {
3115 $conf_dir = "$am_config_aux_dir/";
3116 }
3117 else
3118 {
3119 $conf_dir = '$(srcdir)/';
3120 }
3121 $output_rules .= file_contents ('texi-vers',
3122 new Automake::Location,
3123 TEXI => $texi,
3124 VTI => $vti,
3125 STAMPVTI => "${soutdir}stamp-$vti",
3126 VTEXI => "$soutdir$vtexi",
3127 MDDIR => $conf_dir,
3128 DIRSTAMP => $dirstamp);
3129 }
3130 }
3132 # Handle location of texinfo.tex.
3133 my $need_texi_file = 0;
3134 my $texinfodir;
3135 if (var ('TEXINFO_TEX'))
3136 {
3137 # The user defined TEXINFO_TEX so assume he knows what he is
3138 # doing.
3139 $texinfodir = ('$(srcdir)/'
3140 . dirname (variable_value ('TEXINFO_TEX')));
3141 }
3142 elsif (option 'cygnus')
3143 {
3144 $texinfodir = '$(top_srcdir)/../texinfo';
3145 define_variable ('TEXINFO_TEX', "$texinfodir/texinfo.tex", INTERNAL);
3146 }
3147 elsif ($config_aux_dir_set_in_configure_ac)
3148 {
3149 $texinfodir = $am_config_aux_dir;
3150 define_variable ('TEXINFO_TEX', "$texinfodir/texinfo.tex", INTERNAL);
3151 $need_texi_file = 2; # so that we require_conf_file later
3152 }
3153 else
3154 {
3155 $texinfodir = '$(srcdir)';
3156 $need_texi_file = 1;
3157 }
3158 define_variable ('am__TEXINFO_TEX_DIR', $texinfodir, INTERNAL);
3160 push (@dist_targets, 'dist-info');
3162 if (! option 'no-installinfo')
3163 {
3164 # Make sure documentation is made and installed first. Use
3165 # $(INFO_DEPS), not 'info', because otherwise recursive makes
3166 # get run twice during "make all".
3167 unshift (@all, '$(INFO_DEPS)');
3168 }
3170 define_files_variable ("DVIS", @infobase, 'dvi', INTERNAL);
3171 define_files_variable ("PDFS", @infobase, 'pdf', INTERNAL);
3172 define_files_variable ("PSS", @infobase, 'ps', INTERNAL);
3173 define_files_variable ("HTMLS", @infobase, 'html', INTERNAL);
3175 # This next isn't strictly needed now -- the places that look here
3176 # could easily be changed to look in info_TEXINFOS. But this is
3177 # probably better, in case noinst_TEXINFOS is ever supported.
3178 define_variable ("TEXINFOS", variable_value ('info_TEXINFOS'), INTERNAL);
3180 # Do some error checking. Note that this file is not required
3181 # when in Cygnus mode; instead we defined TEXINFO_TEX explicitly
3182 # up above.
3183 if ($need_texi_file && ! option 'no-texinfo.tex')
3184 {
3185 if ($need_texi_file > 1)
3186 {
3187 require_conf_file_with_macro (TRUE, 'info_TEXINFOS', FOREIGN,
3188 'texinfo.tex');
3189 }
3190 else
3191 {
3192 require_file_with_macro (TRUE, 'info_TEXINFOS', FOREIGN,
3193 'texinfo.tex');
3194 }
3195 }
3197 return makefile_wrap ("", "\t ", @texi_cleans);
3198 }
3201 # handle_texinfo ()
3202 # -----------------
3203 # Handle all Texinfo source.
3204 sub handle_texinfo ()
3205 {
3206 reject_var 'TEXINFOS', "`TEXINFOS' is an anachronism; use `info_TEXINFOS'";
3207 # FIXME: I think this is an obsolete future feature name.
3208 reject_var 'html_TEXINFOS', "HTML generation not yet supported";
3210 my $info_texinfos = var ('info_TEXINFOS');
3211 my $texiclean = "";
3212 if ($info_texinfos)
3213 {
3214 $texiclean = handle_texinfo_helper ($info_texinfos);
3215 }
3216 $output_rules .= file_contents ('texinfos',
3217 new Automake::Location,
3218 TEXICLEAN => $texiclean,
3219 'LOCAL-TEXIS' => !!$info_texinfos);
3220 }
3223 # Handle any man pages.
3224 sub handle_man_pages
3225 {
3226 reject_var 'MANS', "`MANS' is an anachronism; use `man_MANS'";
3228 # Find all the sections in use. We do this by first looking for
3229 # "standard" sections, and then looking for any additional
3230 # sections used in man_MANS.
3231 my (%sections, %vlist);
3232 # We handle nodist_ for uniformity. man pages aren't distributed
3233 # by default so it isn't actually very important.
3234 foreach my $pfx ('', 'dist_', 'nodist_')
3235 {
3236 # Add more sections as needed.
3237 foreach my $section ('0'..'9', 'n', 'l')
3238 {
3239 my $varname = $pfx . 'man' . $section . '_MANS';
3240 if (var ($varname))
3241 {
3242 $sections{$section} = 1;
3243 $varname = '$(' . $varname . ')';
3244 $vlist{$varname} = 1;
3246 &push_dist_common ($varname)
3247 if $pfx eq 'dist_';
3248 }
3249 }
3251 my $varname = $pfx . 'man_MANS';
3252 my $var = var ($varname);
3253 if ($var)
3254 {
3255 foreach ($var->value_as_list_recursive)
3256 {
3257 # A page like `foo.1c' goes into man1dir.
3258 if (/\.([0-9a-z])([a-z]*)$/)
3259 {
3260 $sections{$1} = 1;
3261 }
3262 }
3264 $varname = '$(' . $varname . ')';
3265 $vlist{$varname} = 1;
3266 &push_dist_common ($varname)
3267 if $pfx eq 'dist_';
3268 }
3269 }
3271 return unless %sections;
3273 # Now for each section, generate an install and uninstall rule.
3274 # Sort sections so output is deterministic.
3275 foreach my $section (sort keys %sections)
3276 {
3277 $output_rules .= &file_contents ('mans',
3278 new Automake::Location,
3279 SECTION => $section);
3280 }
3282 my @mans = sort keys %vlist;
3283 $output_vars .= file_contents ('mans-vars',
3284 new Automake::Location,
3285 MANS => "@mans");
3287 push (@all, '$(MANS)')
3288 unless option 'no-installman';
3289 }
3291 # Handle DATA variables.
3292 sub handle_data
3293 {
3294 &am_install_var ('-noextra', '-candist', 'data', 'DATA',
3295 'data', 'sysconf', 'sharedstate', 'localstate',
3296 'pkgdata', 'lisp', 'noinst', 'check');
3297 }
3299 # Handle TAGS.
3300 sub handle_tags
3301 {
3302 my @tag_deps = ();
3303 my @ctag_deps = ();
3304 if (var ('SUBDIRS'))
3305 {
3306 $output_rules .= ("tags-recursive:\n"
3307 . "\tlist=\'\$(SUBDIRS)\'; for subdir in \$\$list; do \\\n"
3308 # Never fail here if a subdir fails; it
3309 # isn't important.
3310 . "\t test \"\$\$subdir\" = . || (cd \$\$subdir"
3311 . " && \$(MAKE) \$(AM_MAKEFLAGS) tags); \\\n"
3312 . "\tdone\n");
3313 push (@tag_deps, 'tags-recursive');
3314 &depend ('.PHONY', 'tags-recursive');
3316 $output_rules .= ("ctags-recursive:\n"
3317 . "\tlist=\'\$(SUBDIRS)\'; for subdir in \$\$list; do \\\n"
3318 # Never fail here if a subdir fails; it
3319 # isn't important.
3320 . "\t test \"\$\$subdir\" = . || (cd \$\$subdir"
3321 . " && \$(MAKE) \$(AM_MAKEFLAGS) ctags); \\\n"
3322 . "\tdone\n");
3323 push (@ctag_deps, 'ctags-recursive');
3324 &depend ('.PHONY', 'ctags-recursive');
3325 }
3327 if (&saw_sources_p (1)
3328 || var ('ETAGS_ARGS')
3329 || @tag_deps)
3330 {
3331 my @config;
3332 foreach my $spec (@config_headers)
3333 {
3334 my ($out, @ins) = split_config_file_spec ($spec);
3335 foreach my $in (@ins)
3336 {
3337 # If the config header source is in this directory,
3338 # require it.
3339 push @config, basename ($in)
3340 if $relative_dir eq dirname ($in);
3341 }
3342 }
3343 $output_rules .= &file_contents ('tags',
3344 new Automake::Location,
3345 CONFIG => "@config",
3346 TAGSDIRS => "@tag_deps",
3347 CTAGSDIRS => "@ctag_deps");
3349 set_seen 'TAGS_DEPENDENCIES';
3350 }
3351 elsif (reject_var ('TAGS_DEPENDENCIES',
3352 "doesn't make sense to define `TAGS_DEPENDENCIES'"
3353 . "without\nsources or `ETAGS_ARGS'"))
3354 {
3355 }
3356 else
3357 {
3358 # Every Makefile must define some sort of TAGS rule.
3359 # Otherwise, it would be possible for a top-level "make TAGS"
3360 # to fail because some subdirectory failed.
3361 $output_rules .= "tags: TAGS\nTAGS:\n\n";
3362 # Ditto ctags.
3363 $output_rules .= "ctags: CTAGS\nCTAGS:\n\n";
3364 }
3365 }
3367 # Handle multilib support.
3368 sub handle_multilib
3369 {
3370 if ($seen_multilib && $relative_dir eq '.')
3371 {
3372 $output_rules .= &file_contents ('multilib', new Automake::Location);
3373 push (@all, 'all-multi');
3374 }
3375 }
3378 # user_phony_rule ($NAME)
3379 # -----------------------
3380 # Return false if rule $NAME does not exist. Otherwise,
3381 # declare it as phony, complete its definition (in case it is
3382 # conditional), and return its Automake::Rule instance.
3383 sub user_phony_rule ($)
3384 {
3385 my ($name) = @_;
3386 my $rule = rule $name;
3387 if ($rule)
3388 {
3389 depend ('.PHONY', $name);
3390 # Define $NAME in all condition where it is not already defined,
3391 # so that it is always OK to depend on $NAME.
3392 for my $c ($rule->not_always_defined_in_cond (TRUE)->conds)
3393 {
3394 Automake::Rule::define ($name, 'internal', RULE_AUTOMAKE,
3395 $c, INTERNAL);
3396 $output_rules .= $c->subst_string . "$name:\n";
3397 }
3398 }
3399 return $rule;
3400 }
3403 # $BOOLEAN
3404 # &for_dist_common ($A, $B)
3405 # -------------------------
3406 # Subroutine for &handle_dist: sort files to dist.
3407 #
3408 # We put README first because it then becomes easier to make a
3409 # Usenet-compliant shar file (in these, README must be first).
3410 #
3411 # FIXME: do more ordering of files here.
3412 sub for_dist_common
3413 {
3414 return 0
3415 if $a eq $b;
3416 return -1
3417 if $a eq 'README';
3418 return 1
3419 if $b eq 'README';
3420 return $a cmp $b;
3421 }
3424 # handle_dist
3425 # -----------
3426 # Handle 'dist' target.
3427 sub handle_dist ()
3428 {
3429 # Substutions for distdit.am
3430 my %transform;
3432 # Define DIST_SUBDIRS. This must always be done, regardless of the
3433 # no-dist setting: target like `distclean' or `maintainer-clean' use it.
3434 my $subdirs = var ('SUBDIRS');
3435 if ($subdirs)
3436 {
3437 # If SUBDIRS is conditionally defined, then set DIST_SUBDIRS
3438 # to all possible directories, and use it. If DIST_SUBDIRS is
3439 # defined, just use it.
3441 # Note that we check DIST_SUBDIRS first on purpose, so that
3442 # we don't call has_conditional_contents for now reason.
3443 # (In the past one project used so many conditional subdirectories
3444 # that calling has_conditional_contents on SUBDIRS caused
3445 # automake to grow to 150Mb -- this should not happen with
3446 # the current implementation of has_conditional_contents,
3447 # but it's more efficient to avoid the call anyway.)
3448 if (var ('DIST_SUBDIRS'))
3449 {
3450 }
3451 elsif ($subdirs->has_conditional_contents)
3452 {
3453 define_pretty_variable
3454 ('DIST_SUBDIRS', TRUE, INTERNAL,
3455 uniq ($subdirs->value_as_list_recursive));
3456 }
3457 else
3458 {
3459 # We always define this because that is what `distclean'
3460 # wants.
3461 define_pretty_variable ('DIST_SUBDIRS', TRUE, INTERNAL,
3462 '$(SUBDIRS)');
3463 }
3464 }
3466 # The remaining definitions are only required when a dist target is used.
3467 return if option 'no-dist';
3469 # At least one of the archive formats must be enabled.
3470 if ($relative_dir eq '.')
3471 {
3472 my $archive_defined = option 'no-dist-gzip' ? 0 : 1;
3473 $archive_defined ||=
3474 grep { option "dist-$_" } ('shar', 'zip', 'tarZ', 'bzip2');
3475 error (option 'no-dist-gzip',
3476 "no-dist-gzip specified but no dist-* specified, "
3477 . "at least one archive format must be enabled")
3478 unless $archive_defined;
3479 }
3481 # Look for common files that should be included in distribution.
3482 # If the aux dir is set, and it does not have a Makefile.am, then
3483 # we check for these files there as well.
3484 my $check_aux = 0;
3485 if ($relative_dir eq '.'
3486 && $config_aux_dir_set_in_configure_ac)
3487 {
3488 if (! &is_make_dir ($config_aux_dir))
3489 {
3490 $check_aux = 1;
3491 }
3492 }
3493 foreach my $cfile (@common_files)
3494 {
3495 if (-f ($relative_dir . "/" . $cfile)
3496 # The file might be absent, but if it can be built it's ok.
3497 || rule $cfile)
3498 {
3499 &push_dist_common ($cfile);
3500 }
3502 # Don't use `elsif' here because a file might meaningfully
3503 # appear in both directories.
3504 if ($check_aux && -f "$config_aux_dir/$cfile")
3505 {
3506 &push_dist_common ("$config_aux_dir/$cfile")
3507 }
3508 }
3510 # We might copy elements from $configure_dist_common to
3511 # %dist_common if we think we need to. If the file appears in our
3512 # directory, we would have discovered it already, so we don't
3513 # check that. But if the file is in a subdir without a Makefile,
3514 # we want to distribute it here if we are doing `.'. Ugly!
3515 if ($relative_dir eq '.')
3516 {
3517 foreach my $file (split (' ' , $configure_dist_common))
3518 {
3519 push_dist_common ($file)
3520 unless is_make_dir (dirname ($file));
3521 }
3522 }
3524 # Files to distributed. Don't use ->value_as_list_recursive
3525 # as it recursively expands `$(dist_pkgdata_DATA)' etc.
3526 my @dist_common = split (' ', rvar ('DIST_COMMON')->variable_value);
3527 @dist_common = uniq (sort for_dist_common (@dist_common));
3528 variable_delete 'DIST_COMMON';
3529 define_pretty_variable ('DIST_COMMON', TRUE, INTERNAL, @dist_common);
3531 # Now that we've processed DIST_COMMON, disallow further attempts
3532 # to set it.
3533 $handle_dist_run = 1;
3535 # Scan EXTRA_DIST to see if we need to distribute anything from a
3536 # subdir. If so, add it to the list. I didn't want to do this
3537 # originally, but there were so many requests that I finally
3538 # relented.
3539 my $extra_dist = var ('EXTRA_DIST');
3540 if ($extra_dist)
3541 {
3542 # FIXME: This should be fixed to work with conditions. That
3543 # will require only making the entries in %dist_dirs under the
3544 # appropriate condition. This is meaningful if the nature of
3545 # the distribution should depend upon the configure options
3546 # used.
3547 foreach ($extra_dist->value_as_list_recursive (skip_ac_subst => 1))
3548 {
3549 next unless s,/+[^/]+$,,;
3550 $dist_dirs{$_} = 1
3551 unless $_ eq '.';
3552 }
3553 }
3555 # We have to check DIST_COMMON for extra directories in case the
3556 # user put a source used in AC_OUTPUT into a subdir.
3557 my $topsrcdir = backname ($relative_dir);
3558 foreach (rvar ('DIST_COMMON')->value_as_list_recursive (skip_ac_subst => 1))
3559 {
3560 s/\$\(top_srcdir\)/$topsrcdir/;
3561 s/\$\(srcdir\)/./;
3562 # Strip any leading `./'.
3563 s,^(:?\./+)*,,;
3564 next unless s,/+[^/]+$,,;
3565 $dist_dirs{$_} = 1
3566 unless $_ eq '.';
3567 }
3569 $transform{'DISTCHECK-HOOK'} = !! rule 'distcheck-hook';
3570 $transform{'GETTEXT'} = $seen_gettext && !$seen_gettext_external;
3572 # Prepend $(distdir) to each directory given.
3573 my %rewritten = map { '$(distdir)/' . "$_" => 1 } keys %dist_dirs;
3574 $transform{'DISTDIRS'} = join (' ', sort keys %rewritten);
3576 # If the target `dist-hook' exists, make sure it is run. This
3577 # allows users to do random weird things to the distribution
3578 # before it is packaged up.
3579 push (@dist_targets, 'dist-hook')
3580 if user_phony_rule 'dist-hook';
3581 $transform{'DIST-TARGETS'} = join (' ', @dist_targets);
3583 my $flm = option ('filename-length-max');
3584 my $filename_filter = $flm ? '.' x $flm->[1] : '';
3586 $output_rules .= &file_contents ('distdir',
3587 new Automake::Location,
3588 %transform,
3589 FILENAME_FILTER => $filename_filter);
3590 }
3593 # check_directory ($NAME, $WHERE)
3594 # -------------------------------
3595 # Ensure $NAME is a directory, and that it uses sane name.
3596 # Use $WHERE as a location in the diagnostic, if any.
3597 sub check_directory ($$)
3598 {
3599 my ($dir, $where) = @_;
3601 error $where, "required directory $relative_dir/$dir does not exist"
3602 unless -d "$relative_dir/$dir";
3604 # If an `obj/' directory exists, BSD make will enter it before
3605 # reading `Makefile'. Hence the `Makefile' in the current directory
3606 # will not be read.
3607 #
3608 # % cat Makefile
3609 # all:
3610 # echo Hello
3611 # % cat obj/Makefile
3612 # all:
3613 # echo World
3614 # % make # GNU make
3615 # echo Hello
3616 # Hello
3617 # % pmake # BSD make
3618 # echo World
3619 # World
3620 msg ('portability', $where,
3621 "naming a subdirectory `obj' causes troubles with BSD make")
3622 if $dir eq 'obj';
3624 # `aux' is probably the most important of the following forbidden name,
3625 # since it's tempting to use it as an AC_CONFIG_AUX_DIR.
3626 msg ('portability', $where,
3627 "name `$dir' is reserved on W32 and DOS platforms")
3628 if grep (/^\Q$dir\E$/i, qw/aux lpt1 lpt2 lpt3 com1 com2 com3 com4 con prn/);
3629 }
3631 # check_directories_in_var ($VARIABLE)
3632 # ------------------------------------
3633 # Recursively check all items in variables $VARIABLE as directories
3634 sub check_directories_in_var ($)
3635 {
3636 my ($var) = @_;
3637 $var->traverse_recursively
3638 (sub
3639 {
3640 my ($var, $val, $cond, $full_cond) = @_;
3641 check_directory ($val, $var->rdef ($cond)->location);
3642 return ();
3643 },
3644 undef,
3645 skip_ac_subst => 1);
3646 }
3648 # &handle_subdirs ()
3649 # ------------------
3650 # Handle subdirectories.
3651 sub handle_subdirs ()
3652 {
3653 my $subdirs = var ('SUBDIRS');
3654 return
3655 unless $subdirs;
3657 check_directories_in_var $subdirs;
3659 my $dsubdirs = var ('DIST_SUBDIRS');
3660 check_directories_in_var $dsubdirs
3661 if $dsubdirs;
3663 $output_rules .= &file_contents ('subdirs', new Automake::Location);
3664 rvar ('RECURSIVE_TARGETS')->rdef (TRUE)->{'pretty'} = VAR_SORTED; # Gross!
3665 }
3668 # ($REGEN, @DEPENDENCIES)
3669 # &scan_aclocal_m4
3670 # ----------------
3671 # If aclocal.m4 creation is automated, return the list of its dependencies.
3672 sub scan_aclocal_m4 ()
3673 {
3674 my $regen_aclocal = 0;
3676 set_seen 'CONFIG_STATUS_DEPENDENCIES';
3677 set_seen 'CONFIGURE_DEPENDENCIES';
3679 if (-f 'aclocal.m4')
3680 {
3681 &define_variable ("ACLOCAL_M4", '$(top_srcdir)/aclocal.m4', INTERNAL);
3683 my $aclocal = new Automake::XFile "< aclocal.m4";
3684 my $line = $aclocal->getline;
3685 $regen_aclocal = $line =~ 'generated automatically by aclocal';
3686 }
3688 my @ac_deps = ();
3690 if (set_seen ('ACLOCAL_M4_SOURCES'))
3691 {
3692 push (@ac_deps, '$(ACLOCAL_M4_SOURCES)');
3693 msg_var ('obsolete', 'ACLOCAL_M4_SOURCES',
3694 "`ACLOCAL_M4_SOURCES' is obsolete.\n"
3695 . "It should be safe to simply remove it.");
3696 }
3698 # Note that it might be possible that aclocal.m4 doesn't exist but
3699 # should be auto-generated. This case probably isn't very
3700 # important.
3702 return ($regen_aclocal, @ac_deps);
3703 }
3706 # @DEPENDENCIES
3707 # &prepend_srcdir (@INPUTS)
3708 # -------------------------
3709 # Prepend $(srcdir) or $(top_srcdir) to all @INPUTS. The idea is that
3710 # if an input file has a directory part the same as the current
3711 # directory, then the directory part is simply replaced by $(srcdir).
3712 # But if the directory part is different, then $(top_srcdir) is
3713 # prepended.
3714 sub prepend_srcdir (@)
3715 {
3716 my (@inputs) = @_;
3717 my @newinputs;
3719 foreach my $single (@inputs)
3720 {
3721 if (dirname ($single) eq $relative_dir)
3722 {
3723 push (@newinputs, '$(srcdir)/' . basename ($single));
3724 }
3725 else
3726 {
3727 push (@newinputs, '$(top_srcdir)/' . $single);
3728 }
3729 }
3730 return @newinputs;
3731 }
3733 # @DEPENDENCIES
3734 # rewrite_inputs_into_dependencies ($OUTPUT, @INPUTS)
3735 # ---------------------------------------------------
3736 # Compute a list of dependencies appropriate for the rebuild
3737 # rule of
3738 # AC_CONFIG_FILES($OUTPUT:$INPUT[0]:$INPUTS[1]:...)
3739 # Also distribute $INPUTs which are not build by another AC_CONFIG_FILES.
3740 sub rewrite_inputs_into_dependencies ($@)
3741 {
3742 my ($file, @inputs) = @_;
3743 my @res = ();
3745 for my $i (@inputs)
3746 {
3747 if (exists $ac_config_files_location{$i})
3748 {
3749 my $di = dirname $i;
3750 if ($di eq $relative_dir)
3751 {
3752 $i = basename $i;
3753 }
3754 # In the top-level Makefile we do not use $(top_builddir), because
3755 # we are already there, and since the targets are built without
3756 # a $(top_builddir), it helps BSD Make to match them with
3757 # dependencies.
3758 elsif ($relative_dir ne '.')
3759 {
3760 $i = '$(top_builddir)/' . $i;
3761 }
3762 }
3763 else
3764 {
3765 msg ('error', $ac_config_files_location{$file},
3766 "required file `$i' not found")
3767 unless exists $output_files{$i} || -f $i;
3768 ($i) = prepend_srcdir ($i);
3769 push_dist_common ($i);
3770 }
3771 push @res, $i;
3772 }
3773 return @res;
3774 }
3778 # &handle_configure ($MAKEFILE_AM, $MAKEFILE_IN, $MAKEFILE, @INPUTS)
3779 # ------------------------------------------------------------------
3780 # Handle remaking and configure stuff.
3781 # We need the name of the input file, to do proper remaking rules.
3782 sub handle_configure ($$$@)
3783 {
3784 my ($makefile_am, $makefile_in, $makefile, @inputs) = @_;
3786 prog_error 'empty @inputs'
3787 unless @inputs;
3789 my ($rel_makefile_am, $rel_makefile_in) = prepend_srcdir ($makefile_am,
3790 $makefile_in);
3791 my $rel_makefile = basename $makefile;
3793 my $colon_infile = ':' . join (':', @inputs);
3794 $colon_infile = '' if $colon_infile eq ":$makefile.in";
3795 my @rewritten = rewrite_inputs_into_dependencies ($makefile, @inputs);
3796 my ($regen_aclocal_m4, @aclocal_m4_deps) = scan_aclocal_m4;
3797 define_pretty_variable ('am__aclocal_m4_deps', TRUE, INTERNAL,
3798 @configure_deps, @aclocal_m4_deps,
3799 '$(top_srcdir)/' . $configure_ac);
3800 my @configuredeps = ('$(am__aclocal_m4_deps)', '$(CONFIGURE_DEPENDENCIES)');
3801 push @configuredeps, '$(ACLOCAL_M4)' if -f 'aclocal.m4';
3802 define_pretty_variable ('am__configure_deps', TRUE, INTERNAL,
3803 @configuredeps);
3805 $output_rules .= file_contents
3806 ('configure',
3807 new Automake::Location,
3808 MAKEFILE => $rel_makefile,
3809 'MAKEFILE-DEPS' => "@rewritten",
3810 'CONFIG-MAKEFILE' => ($relative_dir eq '.') ? '$@' : '$(subdir)/$@',
3811 'MAKEFILE-IN' => $rel_makefile_in,
3812 'MAKEFILE-IN-DEPS' => "@include_stack",
3813 'MAKEFILE-AM' => $rel_makefile_am,
3814 STRICTNESS => global_option 'cygnus'
3815 ? 'cygnus' : $strictness_name,
3816 'USE-DEPS' => global_option 'no-dependencies'
3817 ? ' --ignore-deps' : '',
3818 'MAKEFILE-AM-SOURCES' => "$makefile$colon_infile",
3819 'REGEN-ACLOCAL-M4' => $regen_aclocal_m4);
3821 if ($relative_dir eq '.')
3822 {
3823 &push_dist_common ('acconfig.h')
3824 if -f 'acconfig.h';
3825 }
3827 # If we have a configure header, require it.
3828 my $hdr_index = 0;
3829 my @distclean_config;
3830 foreach my $spec (@config_headers)
3831 {
3832 $hdr_index += 1;
3833 # $CONFIG_H_PATH: config.h from top level.
3834 my ($config_h_path, @ins) = split_config_file_spec ($spec);
3835 my $config_h_dir = dirname ($config_h_path);
3837 # If the header is in the current directory we want to build
3838 # the header here. Otherwise, if we're at the topmost
3839 # directory and the header's directory doesn't have a
3840 # Makefile, then we also want to build the header.
3841 if ($relative_dir eq $config_h_dir
3842 || ($relative_dir eq '.' && ! &is_make_dir ($config_h_dir)))
3843 {
3844 my ($cn_sans_dir, $stamp_dir);
3845 if ($relative_dir eq $config_h_dir)
3846 {
3847 $cn_sans_dir = basename ($config_h_path);
3848 $stamp_dir = '';
3849 }
3850 else
3851 {
3852 $cn_sans_dir = $config_h_path;
3853 if ($config_h_dir eq '.')
3854 {
3855 $stamp_dir = '';
3856 }
3857 else
3858 {
3859 $stamp_dir = $config_h_dir . '/';
3860 }
3861 }
3863 # This will also distribute all inputs.
3864 @ins = rewrite_inputs_into_dependencies ($config_h_path, @ins);
3866 # Header defined and in this directory.
3867 my @files;
3868 if (-f $config_h_path . '.top')
3869 {
3870 push (@files, "$cn_sans_dir.top");
3871 }
3872 if (-f $config_h_path . '.bot')
3873 {
3874 push (@files, "$cn_sans_dir.bot");
3875 }
3877 push_dist_common (@files);
3879 # For now, acconfig.h can only appear in the top srcdir.
3880 if (-f 'acconfig.h')
3881 {
3882 push (@files, '$(top_srcdir)/acconfig.h');
3883 }
3885 my $stamp = "${stamp_dir}stamp-h${hdr_index}";
3886 $output_rules .=
3887 file_contents ('remake-hdr',
3888 new Automake::Location,
3889 FILES => "@files",
3890 CONFIG_H => $cn_sans_dir,
3891 CONFIG_HIN => $ins[0],
3892 CONFIG_H_DEPS => "@ins",
3893 CONFIG_H_PATH => $config_h_path,
3894 STAMP => "$stamp");
3896 push @distclean_config, $cn_sans_dir, $stamp;
3897 }
3898 }
3900 $output_rules .= file_contents ('clean-hdr',
3901 new Automake::Location,
3902 FILES => "@distclean_config")
3903 if @distclean_config;
3905 # Distribute and define mkinstalldirs only if it is already present
3906 # in the package, for backward compatibility (some people may still
3907 # use $(mkinstalldirs)).
3908 my $mkidpath = "$config_aux_dir/mkinstalldirs";
3909 if (-f $mkidpath)
3910 {
3911 # Use require_file so that any existing script gets updated
3912 # by --force-missing.
3913 require_conf_file ($mkidpath, FOREIGN, 'mkinstalldirs');
3914 define_variable ('mkinstalldirs',
3915 "\$(SHELL) $am_config_aux_dir/mkinstalldirs", INTERNAL);
3916 }
3917 else
3918 {
3919 # Use $(install_sh), not $(mkdir_p) because the latter requires
3920 # at least one argument, and $(mkinstalldirs) used to work
3921 # even without arguments (e.g. $(mkinstalldirs) $(conditional_dir)).
3922 define_variable ('mkinstalldirs', '$(install_sh) -d', INTERNAL);
3923 }
3925 reject_var ('CONFIG_HEADER',
3926 "`CONFIG_HEADER' is an anachronism; now determined "
3927 . "automatically\nfrom `$configure_ac'");
3929 my @config_h;
3930 foreach my $spec (@config_headers)
3931 {
3932 my ($out, @ins) = split_config_file_spec ($spec);
3933 # Generate CONFIG_HEADER define.
3934 if ($relative_dir eq dirname ($out))
3935 {
3936 push @config_h, basename ($out);
3937 }
3938 else
3939 {
3940 push @config_h, "\$(top_builddir)/$out";
3941 }
3942 }
3943 define_variable ("CONFIG_HEADER", "@config_h", INTERNAL)
3944 if @config_h;
3946 # Now look for other files in this directory which must be remade
3947 # by config.status, and generate rules for them.
3948 my @actual_other_files = ();
3949 foreach my $lfile (@other_input_files)
3950 {
3951 my $file;
3952 my @inputs;
3953 if ($lfile =~ /^([^:]*):(.*)$/)
3954 {
3955 # This is the ":" syntax of AC_OUTPUT.
3956 $file = $1;
3957 @inputs = split (':', $2);
3958 }
3959 else
3960 {
3961 # Normal usage.
3962 $file = $lfile;
3963 @inputs = $file . '.in';
3964 }
3966 # Automake files should not be stored in here, but in %MAKE_LIST.
3967 prog_error ("$lfile in \@other_input_files\n"
3968 . "\@other_input_files = (@other_input_files)")
3969 if -f $file . '.am';
3971 my $local = basename ($file);
3973 # Make sure the dist directory for each input file is created.
3974 # We only have to do this at the topmost level though. This
3975 # is a bit ugly but it easier than spreading out the logic,
3976 # especially in cases like AC_OUTPUT(foo/out:bar/in), where
3977 # there is no Makefile in bar/.
3978 if ($relative_dir eq '.')
3979 {
3980 foreach (@inputs)
3981 {
3982 $dist_dirs{dirname ($_)} = 1;
3983 }
3984 }
3986 # We skip files that aren't in this directory. However, if
3987 # the file's directory does not have a Makefile, and we are
3988 # currently doing `.', then we create a rule to rebuild the
3989 # file in the subdir.
3990 my $fd = dirname ($file);
3991 if ($fd ne $relative_dir)
3992 {
3993 if ($relative_dir eq '.' && ! &is_make_dir ($fd))
3994 {
3995 $local = $file;
3996 }
3997 else
3998 {
3999 next;
4000 }
4001 }
4003 my @rewritten_inputs = rewrite_inputs_into_dependencies ($file, @inputs);
4005 $output_rules .= ($local . ': '
4006 . '$(top_builddir)/config.status '
4007 . "@rewritten_inputs\n"
4008 . "\t"
4009 . 'cd $(top_builddir) && '
4010 . '$(SHELL) ./config.status '
4011 . ($relative_dir eq '.' ? '' : '$(subdir)/')
4012 . '$@'
4013 . "\n");
4014 push (@actual_other_files, $local);
4015 }
4017 # For links we should clean destinations and distribute sources.
4018 foreach my $spec (@config_links)
4019 {
4020 my ($link, $file) = split /:/, $spec;
4021 # Some people do AC_CONFIG_LINKS($computed). We only handle
4022 # the DEST:SRC form.
4023 next unless $file;
4024 my $where = $ac_config_files_location{$link};
4026 # Skip destinations that contain shell variables.
4027 if ($link !~ /\$/)
4028 {
4029 # We skip links that aren't in this directory. However, if
4030 # the link's directory does not have a Makefile, and we are
4031 # currently doing `.', then we add the link to CONFIG_CLEAN_FILES
4032 # in `.'s Makefile.in.
4033 my $local = basename ($link);
4034 my $fd = dirname ($link);
4035 if ($fd ne $relative_dir)
4036 {
4037 if ($relative_dir eq '.' && ! &is_make_dir ($fd))
4038 {
4039 $local = $link;
4040 }
4041 else
4042 {
4043 $local = undef;
4044 }
4045 }
4046 push @actual_other_files, $local if $local;
4047 }
4049 # Do not process sources that contain shell variables.
4050 if ($file !~ /\$/)
4051 {
4052 my $fd = dirname ($file);
4054 # Make sure the dist directory for each input file is created.
4055 # We only have to do this at the topmost level though.
4056 if ($relative_dir eq '.')
4057 {
4058 $dist_dirs{$fd} = 1;
4059 }
4061 # We distribute files that are in this directory.
4062 # At the top-level (`.') we also distribute files whose
4063 # directory does not have a Makefile.
4064 if (($fd eq $relative_dir)
4065 || ($relative_dir eq '.' && ! &is_make_dir ($fd)))
4066 {
4067 # The following will distribute $file as a side-effect when
4068 # it is appropriate (i.e., when $file is not already an output).
4069 # We do not need the result, just the side-effect.
4070 rewrite_inputs_into_dependencies ($link, $file);
4071 }
4072 }
4073 }
4075 # These files get removed by "make distclean".
4076 define_pretty_variable ('CONFIG_CLEAN_FILES', TRUE, INTERNAL,
4077 @actual_other_files);
4078 }
4080 # Handle C headers.
4081 sub handle_headers
4082 {
4083 my @r = &am_install_var ('-defaultdist', 'header', 'HEADERS', 'include',
4084 'oldinclude', 'pkginclude',
4085 'noinst', 'check');
4086 foreach (@r)
4087 {
4088 next unless $_->[1] =~ /\..*$/;
4089 &saw_extension ($&);
4090 }
4091 }
4093 sub handle_gettext
4094 {
4095 return if ! $seen_gettext || $relative_dir ne '.';
4097 my $subdirs = var 'SUBDIRS';
4099 if (! $subdirs)
4100 {
4101 err_ac "AM_GNU_GETTEXT used but SUBDIRS not defined";
4102 return;
4103 }
4105 # Perform some sanity checks to help users get the right setup.
4106 # We disable these tests when po/ doesn't exist in order not to disallow
4107 # unusual gettext setups.
4108 #
4109 # Bruno Haible:
4110 # | The idea is:
4111 # |
4112 # | 1) If a package doesn't have a directory po/ at top level, it
4113 # | will likely have multiple po/ directories in subpackages.
4114 # |
4115 # | 2) It is useful to warn for the absence of intl/ if AM_GNU_GETTEXT
4116 # | is used without 'external'. It is also useful to warn for the
4117 # | presence of intl/ if AM_GNU_GETTEXT([external]) is used. Both
4118 # | warnings apply only to the usual layout of packages, therefore
4119 # | they should both be disabled if no po/ directory is found at
4120 # | top level.
4122 if (-d 'po')
4123 {
4124 my @subdirs = $subdirs->value_as_list_recursive;
4126 msg_var ('syntax', $subdirs,
4127 "AM_GNU_GETTEXT used but `po' not in SUBDIRS")
4128 if ! grep ($_ eq 'po', @subdirs);
4130 # intl/ is not required when AM_GNU_GETTEXT is called with
4131 # the `external' option.
4132 msg_var ('syntax', $subdirs,
4133 "AM_GNU_GETTEXT used but `intl' not in SUBDIRS")
4134 if (! $seen_gettext_external
4135 && ! grep ($_ eq 'intl', @subdirs));
4137 # intl/ should not be used with AM_GNU_GETTEXT([external])
4138 msg_var ('syntax', $subdirs,
4139 "`intl' should not be in SUBDIRS when "
4140 . "AM_GNU_GETTEXT([external]) is used")
4141 if ($seen_gettext_external && grep ($_ eq 'intl', @subdirs));
4142 }
4144 require_file ($ac_gettext_location, GNU, 'ABOUT-NLS');
4145 }
4147 # Handle footer elements.
4148 sub handle_footer
4149 {
4150 # NOTE don't use define_pretty_variable here, because
4151 # $contents{...} is already defined.
4152 $output_vars .= 'SOURCES = ' . variable_value ('SOURCES') . "\n\n"
4153 if variable_value ('SOURCES');
4155 reject_rule ('.SUFFIXES',
4156 "use variable `SUFFIXES', not target `.SUFFIXES'");
4158 # Note: AIX 4.1 /bin/make will fail if any suffix rule appears
4159 # before .SUFFIXES. So we make sure that .SUFFIXES appears before
4160 # anything else, by sticking it right after the default: target.
4161 $output_header .= ".SUFFIXES:\n";
4162 my $suffixes = var 'SUFFIXES';
4163 my @suffixes = Automake::Rule::suffixes;
4164 if (@suffixes || $suffixes)
4165 {
4166 # Make sure SUFFIXES has unique elements. Sort them to ensure
4167 # the output remains consistent. However, $(SUFFIXES) is
4168 # always at the start of the list, unsorted. This is done
4169 # because make will choose rules depending on the ordering of
4170 # suffixes, and this lets the user have some control. Push
4171 # actual suffixes, and not $(SUFFIXES). Some versions of make
4172 # do not like variable substitutions on the .SUFFIXES line.
4173 my @user_suffixes = ($suffixes
4174 ? $suffixes->value_as_list_recursive : ());
4176 my %suffixes = map { $_ => 1 } @suffixes;
4177 delete @suffixes{@user_suffixes};
4179 $output_header .= (".SUFFIXES: "
4180 . join (' ', @user_suffixes, sort keys %suffixes)
4181 . "\n");
4182 }
4184 $output_trailer .= file_contents ('footer', new Automake::Location);
4185 }
4188 # Generate `make install' rules.
4189 sub handle_install ()
4190 {
4191 $output_rules .= &file_contents
4192 ('install',
4193 new Automake::Location,
4194 maybe_BUILT_SOURCES => (set_seen ('BUILT_SOURCES')
4195 ? (" \$(BUILT_SOURCES)\n"
4196 . "\t\$(MAKE) \$(AM_MAKEFLAGS)")
4197 : ''),
4198 'installdirs-local' => (user_phony_rule 'installdirs-local'
4199 ? ' installdirs-local' : ''),
4200 am__installdirs => variable_value ('am__installdirs') || '');
4201 }
4204 # Deal with all and all-am.
4205 sub handle_all ($)
4206 {
4207 my ($makefile) = @_;
4209 # Output `all-am'.
4211 # Put this at the beginning for the sake of non-GNU makes. This
4212 # is still wrong if these makes can run parallel jobs. But it is
4213 # right enough.
4214 unshift (@all, basename ($makefile));
4216 foreach my $spec (@config_headers)
4217 {
4218 my ($out, @ins) = split_config_file_spec ($spec);
4219 push (@all, basename ($out))
4220 if dirname ($out) eq $relative_dir;
4221 }
4223 # Install `all' hooks.
4224 push (@all, "all-local")
4225 if user_phony_rule "all-local";
4227 &pretty_print_rule ("all-am:", "\t\t", @all);
4228 &depend ('.PHONY', 'all-am', 'all');
4231 # Output `all'.
4233 my @local_headers = ();
4234 push @local_headers, '$(BUILT_SOURCES)'
4235 if var ('BUILT_SOURCES');
4236 foreach my $spec (@config_headers)
4237 {
4238 my ($out, @ins) = split_config_file_spec ($spec);
4239 push @local_headers, basename ($out)
4240 if dirname ($out) eq $relative_dir;
4241 }
4243 if (@local_headers)
4244 {
4245 # We need to make sure config.h is built before we recurse.
4246 # We also want to make sure that built sources are built
4247 # before any ordinary `all' targets are run. We can't do this
4248 # by changing the order of dependencies to the "all" because
4249 # that breaks when using parallel makes. Instead we handle
4250 # things explicitly.
4251 $output_all .= ("all: @local_headers"
4252 . "\n\t"
4253 . '$(MAKE) $(AM_MAKEFLAGS) '
4254 . (var ('SUBDIRS') ? 'all-recursive' : 'all-am')
4255 . "\n\n");
4256 }
4257 else
4258 {
4259 $output_all .= "all: " . (var ('SUBDIRS')
4260 ? 'all-recursive' : 'all-am') . "\n\n";
4261 }
4262 }
4265 # &do_check_merge_target ()
4266 # -------------------------
4267 # Handle check merge target specially.
4268 sub do_check_merge_target ()
4269 {
4270 # Include user-defined local form of target.
4271 push @check_tests, 'check-local'
4272 if user_phony_rule 'check-local';
4274 # In --cygnus mode, check doesn't depend on all.
4275 if (option 'cygnus')
4276 {
4277 # Just run the local check rules.
4278 pretty_print_rule ('check-am:', "\t\t", @check);
4279 }
4280 else
4281 {
4282 # The check target must depend on the local equivalent of
4283 # `all', to ensure all the primary targets are built. Then it
4284 # must build the local check rules.
4285 $output_rules .= "check-am: all-am\n";
4286 pretty_print_rule ("\t\$(MAKE) \$(AM_MAKEFLAGS)", "\t ",
4287 @check)
4288 if @check;
4289 }
4290 pretty_print_rule ("\t\$(MAKE) \$(AM_MAKEFLAGS)", "\t ",
4291 @check_tests)
4292 if @check_tests;
4294 depend '.PHONY', 'check', 'check-am';
4295 # Handle recursion. We have to honor BUILT_SOURCES like for `all:'.
4296 $output_rules .= ("check: "
4297 . (var ('BUILT_SOURCES')
4298 ? "\$(BUILT_SOURCES)\n\t\$(MAKE) \$(AM_MAKEFLAGS) "
4299 : '')
4300 . (var ('SUBDIRS') ? 'check-recursive' : 'check-am')
4301 . "\n");
4302 }
4304 # handle_clean ($MAKEFILE)
4305 # ------------------------
4306 # Handle all 'clean' targets.
4307 sub handle_clean ($)
4308 {
4309 my ($makefile) = @_;
4311 # Clean the files listed in user variables if they exist.
4312 $clean_files{'$(MOSTLYCLEANFILES)'} = MOSTLY_CLEAN
4313 if var ('MOSTLYCLEANFILES');
4314 $clean_files{'$(CLEANFILES)'} = CLEAN
4315 if var ('CLEANFILES');
4316 $clean_files{'$(DISTCLEANFILES)'} = DIST_CLEAN
4317 if var ('DISTCLEANFILES');
4318 $clean_files{'$(MAINTAINERCLEANFILES)'} = MAINTAINER_CLEAN
4319 if var ('MAINTAINERCLEANFILES');
4321 # Built sources are automatically removed by maintainer-clean.
4322 $clean_files{'$(BUILT_SOURCES)'} = MAINTAINER_CLEAN
4323 if var ('BUILT_SOURCES');
4325 # Compute a list of "rm"s to run for each target.
4326 my %rms = (MOSTLY_CLEAN, [],
4327 CLEAN, [],
4328 DIST_CLEAN, [],
4329 MAINTAINER_CLEAN, []);
4331 foreach my $file (keys %clean_files)
4332 {
4333 my $when = $clean_files{$file};
4334 prog_error 'invalid entry in %clean_files'
4335 unless exists $rms{$when};
4337 my $rm = "rm -f $file";
4338 # If file is a variable, make sure when don't call `rm -f' without args.
4339 $rm ="test -z \"$file\" || $rm"
4340 if ($file =~ /^\s*\$(\(.*\)|\{.*\})\s*$/);
4342 push @{$rms{$when}}, "\t-$rm\n";
4343 }
4345 $output_rules .= &file_contents
4346 ('clean',
4347 new Automake::Location,
4348 MOSTLYCLEAN_RMS => join ('', sort @{$rms{&MOSTLY_CLEAN}}),
4349 CLEAN_RMS => join ('', sort @{$rms{&CLEAN}}),
4350 DISTCLEAN_RMS => join ('', sort @{$rms{&DIST_CLEAN}}),
4351 MAINTAINER_CLEAN_RMS => join ('', sort @{$rms{&MAINTAINER_CLEAN}}),
4352 MAKEFILE => basename $makefile,
4353 );
4354 }
4357 # &target_cmp ($A, $B)
4358 # --------------------
4359 # Subroutine for &handle_factored_dependencies to let `.PHONY' be last.
4360 sub target_cmp
4361 {
4362 return 0
4363 if $a eq $b;
4364 return -1
4365 if $b eq '.PHONY';
4366 return 1
4367 if $a eq '.PHONY';
4368 return $a cmp $b;
4369 }
4372 # &handle_factored_dependencies ()
4373 # --------------------------------
4374 # Handle everything related to gathered targets.
4375 sub handle_factored_dependencies
4376 {
4377 # Reject bad hooks.
4378 foreach my $utarg ('uninstall-data-local', 'uninstall-data-hook',
4379 'uninstall-exec-local', 'uninstall-exec-hook')
4380 {
4381 my $x = $utarg;
4382 $x =~ s/(data|exec)-//;
4383 reject_rule ($utarg, "use `$x', not `$utarg'");
4384 }
4386 reject_rule ('install-local',
4387 "use `install-data-local' or `install-exec-local', "
4388 . "not `install-local'");
4390 reject_rule ('install-info-local',
4391 "`install-info-local' target defined but "
4392 . "`no-installinfo' option not in use")
4393 unless option 'no-installinfo';
4395 # Install the -local hooks.
4396 foreach (keys %dependencies)
4397 {
4398 # Hooks are installed on the -am targets.
4399 s/-am$// or next;
4400 depend ("$_-am", "$_-local")
4401 if user_phony_rule "$_-local";
4402 }
4404 # Install the -hook hooks.
4405 # FIXME: Why not be as liberal as we are with -local hooks?
4406 foreach ('install-exec', 'install-data', 'uninstall')
4407 {
4408 if (user_phony_rule "$_-hook")
4409 {
4410 $actions{"$_-am"} .=
4411 ("\t\@\$(NORMAL_INSTALL)\n"
4412 . "\t" . '$(MAKE) $(AM_MAKEFLAGS) ' . "$_-hook\n");
4413 }
4414 }
4416 # All the required targets are phony.
4417 depend ('.PHONY', keys %required_targets);
4419 # Actually output gathered targets.
4420 foreach (sort target_cmp keys %dependencies)
4421 {
4422 # If there is nothing about this guy, skip it.
4423 next
4424 unless (@{$dependencies{$_}}
4425 || $actions{$_}
4426 || $required_targets{$_});
4428 # Define gathered targets in undefined conditions.
4429 # FIXME: Right now we must handle .PHONY as an exception,
4430 # because people write things like
4431 # .PHONY: myphonytarget
4432 # to append dependencies. This would not work if Automake
4433 # refrained from defining its own .PHONY target as it does
4434 # with other overridden targets.
4435 my @undefined_conds = (TRUE,);
4436 if ($_ ne '.PHONY')
4437 {
4438 @undefined_conds =
4439 Automake::Rule::define ($_, 'internal',
4440 RULE_AUTOMAKE, TRUE, INTERNAL);
4441 }
4442 my @uniq_deps = uniq (sort @{$dependencies{$_}});
4443 foreach my $cond (@undefined_conds)
4444 {
4445 my $condstr = $cond->subst_string;
4446 &pretty_print_rule ("$condstr$_:", "$condstr\t", @uniq_deps);
4447 $output_rules .= $actions{$_} if defined $actions{$_};
4448 $output_rules .= "\n";
4449 }
4450 }
4451 }
4454 # &handle_tests_dejagnu ()
4455 # ------------------------
4456 sub handle_tests_dejagnu
4457 {
4458 push (@check_tests, 'check-DEJAGNU');
4459 $output_rules .= file_contents ('dejagnu', new Automake::Location);
4460 }
4463 # Handle TESTS variable and other checks.
4464 sub handle_tests
4465 {
4466 if (option 'dejagnu')
4467 {
4468 &handle_tests_dejagnu;
4469 }
4470 else
4471 {
4472 foreach my $c ('DEJATOOL', 'RUNTEST', 'RUNTESTFLAGS')
4473 {
4474 reject_var ($c, "`$c' defined but `dejagnu' not in "
4475 . "`AUTOMAKE_OPTIONS'");
4476 }
4477 }
4479 if (var ('TESTS'))
4480 {
4481 push (@check_tests, 'check-TESTS');
4482 $output_rules .= &file_contents ('check', new Automake::Location);
4483 }
4484 }
4486 # Handle Emacs Lisp.
4487 sub handle_emacs_lisp
4488 {
4489 my @elfiles = &am_install_var ('-candist', 'lisp', 'LISP',
4490 'lisp', 'noinst');
4492 return if ! @elfiles;
4494 define_pretty_variable ('am__ELFILES', TRUE, INTERNAL,
4495 map { $_->[1] } @elfiles);
4496 define_pretty_variable ('am__ELCFILES', TRUE, INTERNAL,
4497 '$(am__ELFILES:.el=.elc)');
4498 # This one can be overridden by users.
4499 define_pretty_variable ('ELCFILES', TRUE, INTERNAL, '$(LISP:.el=.elc)');
4501 push @all, '$(ELCFILES)';
4503 require_variables ($elfiles[0][0], "Emacs Lisp sources seen", TRUE,
4504 'EMACS', 'lispdir');
4505 require_conf_file ($elfiles[0][0], FOREIGN, 'elisp-comp');
4506 &define_variable ('elisp_comp', "$am_config_aux_dir/elisp-comp", INTERNAL);
4507 }
4509 # Handle Python
4510 sub handle_python
4511 {
4512 my @pyfiles = &am_install_var ('-defaultdist', 'python', 'PYTHON',
4513 'noinst');
4514 return if ! @pyfiles;
4516 require_variables ($pyfiles[0][0], "Python sources seen", TRUE, 'PYTHON');
4517 require_conf_file ($pyfiles[0][0], FOREIGN, 'py-compile');
4518 &define_variable ('py_compile', "$am_config_aux_dir/py-compile", INTERNAL);
4519 }
4521 # Handle Java.
4522 sub handle_java
4523 {
4524 my @sourcelist = &am_install_var ('-candist',
4525 'java', 'JAVA',
4526 'java', 'noinst', 'check');
4527 return if ! @sourcelist;
4529 my @prefix = am_primary_prefixes ('JAVA', 1,
4530 'java', 'noinst', 'check');
4532 my $dir;
4533 foreach my $curs (@prefix)
4534 {
4535 next
4536 if $curs eq 'EXTRA';
4538 err_var "${curs}_JAVA", "multiple _JAVA primaries in use"
4539 if defined $dir;
4540 $dir = $curs;
4541 }
4544 push (@all, 'class' . $dir . '.stamp');
4545 }
4548 # Handle some of the minor options.
4549 sub handle_minor_options
4550 {
4551 if (option 'readme-alpha')
4552 {
4553 if ($relative_dir eq '.')
4554 {
4555 if ($package_version !~ /^$GNITS_VERSION_PATTERN$/)
4556 {
4557 msg ('error-gnits', $package_version_location,
4558 "version `$package_version' doesn't follow " .
4559 "Gnits standards");
4560 }
4561 if (defined $1 && -f 'README-alpha')
4562 {
4563 # This means we have an alpha release. See
4564 # GNITS_VERSION_PATTERN for details.
4565 push_dist_common ('README-alpha');
4566 }
4567 }
4568 }
4569 }
4571 ################################################################
4573 # ($OUTPUT, @INPUTS)
4574 # &split_config_file_spec ($SPEC)
4575 # -------------------------------
4576 # Decode the Autoconf syntax for config files (files, headers, links
4577 # etc.).
4578 sub split_config_file_spec ($)
4579 {
4580 my ($spec) = @_;
4581 my ($output, @inputs) = split (/:/, $spec);
4583 push @inputs, "$output.in"
4584 unless @inputs;
4586 return ($output, @inputs);
4587 }
4589 # $input
4590 # locate_am (@POSSIBLE_SOURCES)
4591 # -----------------------------
4592 # AC_CONFIG_FILES allow specifications such as Makefile:top.in:mid.in:bot.in
4593 # This functions returns the first *.in file for which a *.am exists.
4594 # It returns undef otherwise.
4595 sub locate_am (@)
4596 {
4597 my (@rest) = @_;
4598 my $input;
4599 foreach my $file (@rest)
4600 {
4601 if (($file =~ /^(.*)\.in$/) && -f "$1.am")
4602 {
4603 $input = $file;
4604 last;
4605 }
4606 }
4607 return $input;
4608 }
4610 my %make_list;
4612 # &scan_autoconf_config_files ($WHERE, $CONFIG-FILES)
4613 # ---------------------------------------------------
4614 # Study $CONFIG-FILES which is the first argument to AC_CONFIG_FILES
4615 # (or AC_OUTPUT).
4616 sub scan_autoconf_config_files ($$)
4617 {
4618 my ($where, $config_files) = @_;
4620 # Look at potential Makefile.am's.
4621 foreach (split ' ', $config_files)
4622 {
4623 # Must skip empty string for Perl 4.
4624 next if $_ eq "\\" || $_ eq '';
4626 # Handle $local:$input syntax.
4627 my ($local, @rest) = split (/:/);
4628 @rest = ("$local.in",) unless @rest;
4629 my $input = locate_am @rest;
4630 if ($input)
4631 {
4632 # We have a file that automake should generate.
4633 $make_list{$input} = join (':', ($local, @rest));
4634 }
4635 else
4636 {
4637 # We have a file that automake should cause to be
4638 # rebuilt, but shouldn't generate itself.
4639 push (@other_input_files, $_);
4640 }
4641 $ac_config_files_location{$local} = $where;
4642 }
4643 }
4646 # &scan_autoconf_traces ($FILENAME)
4647 # ---------------------------------
4648 sub scan_autoconf_traces ($)
4649 {
4650 my ($filename) = @_;
4652 # Macros to trace, with their minimal number of arguments.
4653 #
4654 # IMPORTANT: If you add a macro here, you should also add this macro
4655 # ========= to Automake-preselection in autoconf/lib/autom4te.in.
4656 my %traced = (
4657 AC_CANONICAL_BUILD => 0,
4658 AC_CANONICAL_HOST => 0,
4659 AC_CANONICAL_TARGET => 0,
4660 AC_CONFIG_AUX_DIR => 1,
4661 AC_CONFIG_FILES => 1,
4662 AC_CONFIG_HEADERS => 1,
4663 AC_CONFIG_LINKS => 1,
4664 AC_INIT => 0,
4665 AC_LIBSOURCE => 1,
4666 AC_REQUIRE_AUX_FILE => 1,
4667 AC_SUBST => 1,
4668 AM_AUTOMAKE_VERSION => 1,
4669 AM_CONDITIONAL => 2,
4670 AM_ENABLE_MULTILIB => 0,
4671 AM_GNU_GETTEXT => 0,
4672 AM_INIT_AUTOMAKE => 0,
4673 AM_MAINTAINER_MODE => 0,
4674 AM_PROG_CC_C_O => 0,
4675 LT_SUPPORTED_TAG => 1,
4676 _LT_AC_TAGCONFIG => 0,
4677 m4_include => 1,
4678 m4_sinclude => 1,
4679 sinclude => 1,
4680 );
4682 my $traces = ($ENV{AUTOCONF} || 'autoconf') . " ";
4684 # Use a separator unlikely to be used, not `:', the default, which
4685 # has a precise meaning for AC_CONFIG_FILES and so on.
4686 $traces .= join (' ',
4687 map { "--trace=$_" . ':\$f:\$l::\$n::\${::}%' }
4688 (keys %traced));
4690 my $tracefh = new Automake::XFile ("$traces $filename |");
4691 verb "reading $traces";
4693 while ($_ = $tracefh->getline)
4694 {
4695 chomp;
4696 my ($here, @args) = split (/::/);
4697 my $where = new Automake::Location $here;
4698 my $macro = $args[0];
4700 prog_error ("unrequested trace `$macro'")
4701 unless exists $traced{$macro};
4703 # Skip and diagnose malformed calls.
4704 if ($#args < $traced{$macro})
4705 {
4706 msg ('syntax', $where, "not enough arguments for $macro");
4707 next;
4708 }
4710 # Alphabetical ordering please.
4711 if ($macro eq 'AC_CANONICAL_BUILD')
4712 {
4713 if ($seen_canonical <= AC_CANONICAL_BUILD)
4714 {
4715 $seen_canonical = AC_CANONICAL_BUILD;
4716 $canonical_location = $where;
4717 }
4718 }
4719 elsif ($macro eq 'AC_CANONICAL_HOST')
4720 {
4721 if ($seen_canonical <= AC_CANONICAL_HOST)
4722 {
4723 $seen_canonical = AC_CANONICAL_HOST;
4724 $canonical_location = $where;
4725 }
4726 }
4727 elsif ($macro eq 'AC_CANONICAL_TARGET')
4728 {
4729 $seen_canonical = AC_CANONICAL_TARGET;
4730 $canonical_location = $where;
4731 }
4732 elsif ($macro eq 'AC_CONFIG_AUX_DIR')
4733 {
4734 if ($seen_init_automake)
4735 {
4736 error ($where, "AC_CONFIG_AUX_DIR must be called before "
4737 . "AM_INIT_AUTOMAKE...", partial => 1);
4738 error ($seen_init_automake, "... AM_INIT_AUTOMAKE called here");
4739 }
4740 $config_aux_dir = $args[1];
4741 $config_aux_dir_set_in_configure_ac = 1;
4742 $relative_dir = '.';
4743 check_directory ($config_aux_dir, $where);
4744 }
4745 elsif ($macro eq 'AC_CONFIG_FILES')
4746 {
4747 # Look at potential Makefile.am's.
4748 scan_autoconf_config_files ($where, $args[1]);
4749 }
4750 elsif ($macro eq 'AC_CONFIG_HEADERS')
4751 {
4752 foreach my $spec (split (' ', $args[1]))
4753 {
4754 my ($dest, @src) = split (':', $spec);
4755 $ac_config_files_location{$dest} = $where;
4756 push @config_headers, $spec;
4757 }
4758 }
4759 elsif ($macro eq 'AC_CONFIG_LINKS')
4760 {
4761 foreach my $spec (split (' ', $args[1]))
4762 {
4763 my ($dest, $src) = split (':', $spec);
4764 $ac_config_files_location{$dest} = $where;
4765 push @config_links, $spec;
4766 }
4767 }
4768 elsif ($macro eq 'AC_INIT')
4769 {
4770 if (defined $args[2])
4771 {
4772 $package_version = $args[2];
4773 $package_version_location = $where;
4774 }
4775 }
4776 elsif ($macro eq 'AC_LIBSOURCE')
4777 {
4778 $libsources{$args[1]} = $here;
4779 }
4780 elsif ($macro eq 'AC_SUBST')
4781 {
4782 # Just check for alphanumeric in AC_SUBST. If you do
4783 # AC_SUBST(5), then too bad.
4784 $configure_vars{$args[1]} = $where
4785 if $args[1] =~ /^\w+$/;
4786 }
4787 elsif ($macro eq 'AM_AUTOMAKE_VERSION')
4788 {
4789 error ($where,
4790 "version mismatch. This is Automake $VERSION,\n" .
4791 "but the definition used by this AM_INIT_AUTOMAKE\n" .
4792 "comes from Automake $args[1]. You should recreate\n" .
4793 "aclocal.m4 with aclocal and run automake again.\n",
4794 # $? = 63 is used to indicate version mismatch to missing.
4795 exit_code => 63)
4796 if $VERSION ne $args[1];
4798 $seen_automake_version = 1;
4799 }
4800 elsif ($macro eq 'AM_CONDITIONAL')
4801 {
4802 $configure_cond{$args[1]} = $where;
4803 }
4804 elsif ($macro eq 'AM_ENABLE_MULTILIB')
4805 {
4806 $seen_multilib = $where;
4807 }
4808 elsif ($macro eq 'AM_GNU_GETTEXT')
4809 {
4810 $seen_gettext = $where;
4811 $ac_gettext_location = $where;
4812 $seen_gettext_external = grep ($_ eq 'external', @args);
4813 }
4814 elsif ($macro eq 'AM_INIT_AUTOMAKE')
4815 {
4816 $seen_init_automake = $where;
4817 if (defined $args[2])
4818 {
4819 $package_version = $args[2];
4820 $package_version_location = $where;
4821 }
4822 elsif (defined $args[1])
4823 {
4824 exit $exit_code
4825 if (process_global_option_list ($where,
4826 split (' ', $args[1])));
4827 }
4828 }
4829 elsif ($macro eq 'AM_MAINTAINER_MODE')
4830 {
4831 $seen_maint_mode = $where;
4832 }
4833 elsif ($macro eq 'AM_PROG_CC_C_O')
4834 {
4835 $seen_cc_c_o = $where;
4836 }
4837 elsif ($macro eq 'AC_REQUIRE_AUX_FILE')
4838 {
4839 # Only remember the first time a file is required.
4840 $required_aux_file{$args[1]} = $where
4841 unless exists $required_aux_file{$args[1]};
4842 }
4843 elsif ($macro eq 'm4_include'
4844 || $macro eq 'm4_sinclude'
4845 || $macro eq 'sinclude')
4846 {
4847 # Some modified versions of Autoconf don't use
4848 # forzen files. Consequently it's possible that we see all
4849 # m4_include's performed during Autoconf's startup.
4850 # Obviously we don't want to distribute Autoconf's files
4851 # so we skip absolute filenames here.
4852 push @configure_deps, '$(top_srcdir)/' . $args[1]
4853 unless $here =~ m,^(?:\w:)?[\\/],;
4854 # Keep track of the greatest timestamp.
4855 if (-e $args[1])
4856 {
4857 my $mtime = mtime $args[1];
4858 $configure_deps_greatest_timestamp = $mtime
4859 if $mtime > $configure_deps_greatest_timestamp;
4860 }
4861 }
4862 elsif ($macro eq 'LT_SUPPORTED_TAG')
4863 {
4864 $libtool_tags{$args[1]} = 1;
4865 $libtool_new_api = 1;
4866 }
4867 elsif ($macro eq '_LT_AC_TAGCONFIG')
4868 {
4869 # _LT_AC_TAGCONFIG is an old macro present in Libtool 1.5.
4870 # We use it to detect whether tags are supported. Our
4871 # prefered interface is LT_SUPPORTED_TAG, but it was
4872 # introduced in Libtool 1.6.
4873 if (0 == keys %libtool_tags)
4874 {
4875 # Hardcode the tags supported by Libtool 1.5.
4876 %libtool_tags = (CC => 1, CXX => 1, GCJ => 1, F77 => 1);
4877 }
4878 }
4879 }
4881 $tracefh->close;
4882 }
4885 # &scan_autoconf_files ()
4886 # -----------------------
4887 # Check whether we use `configure.ac' or `configure.in'.
4888 # Scan it (and possibly `aclocal.m4') for interesting things.
4889 # We must scan aclocal.m4 because there might be AC_SUBSTs and such there.
4890 sub scan_autoconf_files ()
4891 {
4892 # Reinitialize libsources here. This isn't really necessary,
4893 # since we currently assume there is only one configure.ac. But
4894 # that won't always be the case.
4895 %libsources = ();
4897 # Keep track of the youngest configure dependency.
4898 $configure_deps_greatest_timestamp = mtime $configure_ac;
4899 if (-e 'aclocal.m4')
4900 {
4901 my $mtime = mtime 'aclocal.m4';
4902 $configure_deps_greatest_timestamp = $mtime
4903 if $mtime > $configure_deps_greatest_timestamp;
4904 }
4906 scan_autoconf_traces ($configure_ac);
4908 @configure_input_files = sort keys %make_list;
4909 # Set input and output files if not specified by user.
4910 if (! @input_files)
4911 {
4912 @input_files = @configure_input_files;
4913 %output_files = %make_list;
4914 }
4917 if (! $seen_init_automake)
4918 {
4919 err_ac ("no proper invocation of AM_INIT_AUTOMAKE was found.\nYou "
4920 . "should verify that $configure_ac invokes AM_INIT_AUTOMAKE,"
4921 . "\nthat aclocal.m4 is present in the top-level directory,\n"
4922 . "and that aclocal.m4 was recently regenerated "
4923 . "(using aclocal).");
4924 }
4925 else
4926 {
4927 if (! $seen_automake_version)
4928 {
4929 if (-f 'aclocal.m4')
4930 {
4931 error ($seen_init_automake,
4932 "your implementation of AM_INIT_AUTOMAKE comes from " .
4933 "an\nold Automake version. You should recreate " .
4934 "aclocal.m4\nwith aclocal and run automake again.\n",
4935 # $? = 63 is used to indicate version mismatch to missing.
4936 exit_code => 63);
4937 }
4938 else
4939 {
4940 error ($seen_init_automake,
4941 "no proper implementation of AM_INIT_AUTOMAKE was " .
4942 "found,\nprobably because aclocal.m4 is missing...\n" .
4943 "You should run aclocal to create this file, then\n" .
4944 "run automake again.\n");
4945 }
4946 }
4947 }
4949 locate_aux_dir ();
4951 # Reorder @input_files so that the Makefile that distributes aux
4952 # files is processed last. This is important because each directory
4953 # can require auxiliary scripts and we should wait until they have
4954 # been installed before distributing them.
4956 # The Makefile.in that distribute the aux files is the one in
4957 # $config_aux_dir or the top-level Makefile.
4958 my $auxdirdist = is_make_dir ($config_aux_dir) ? $config_aux_dir : '.';
4959 my @new_input_files = ();
4960 while (@input_files)
4961 {
4962 my $in = pop @input_files;
4963 my @ins = split (/:/, $output_files{$in});
4964 if (dirname ($ins[0]) eq $auxdirdist)
4965 {
4966 push @new_input_files, $in;
4967 $automake_will_process_aux_dir = 1;
4968 }
4969 else
4970 {
4971 unshift @new_input_files, $in;
4972 }
4973 }
4974 @input_files = @new_input_files;
4976 # If neither the auxdir/Makefile nor the ./Makefile are generated
4977 # by Automake, we won't distribute the aux files anyway. Assume
4978 # the user know what (s)he does, and pretend we will distribute
4979 # them to disable the error in require_file_internal.
4980 $automake_will_process_aux_dir = 1 if ! is_make_dir ($auxdirdist);
4982 # Look for some files we need. Always check for these. This
4983 # check must be done for every run, even those where we are only
4984 # looking at a subdir Makefile. We must set relative_dir for
4985 # maybe_push_required_file to work.
4986 $relative_dir = '.';
4987 foreach my $file (keys %required_aux_file)
4988 {
4989 require_conf_file ($required_aux_file{$file}->get, FOREIGN, $file)
4990 }
4991 err_am "`install.sh' is an anachronism; use `install-sh' instead"
4992 if -f $config_aux_dir . '/install.sh';
4994 # Preserve dist_common for later.
4995 $configure_dist_common = variable_value ('DIST_COMMON') || '';
4997 }
4999 ################################################################
5001 # Set up for Cygnus mode.
5002 sub check_cygnus
5003 {
5004 my $cygnus = option 'cygnus';
5005 return unless $cygnus;
5007 set_strictness ('foreign');
5008 set_option ('no-installinfo', $cygnus);
5009 set_option ('no-dependencies', $cygnus);
5010 set_option ('no-dist', $cygnus);
5012 err_ac "`AM_MAINTAINER_MODE' required when --cygnus specified"
5013 if !$seen_maint_mode;
5014 }
5016 # Do any extra checking for GNU standards.
5017 sub check_gnu_standards
5018 {
5019 if ($relative_dir eq '.')
5020 {
5021 # In top level (or only) directory.
5022 require_file ("$am_file.am", GNU,
5023 qw/INSTALL NEWS README AUTHORS ChangeLog/);
5025 # Accept one of these three licenses; default to COPYING.
5026 # Make sure we do not overwrite an existing license.
5027 my $license;
5028 foreach (qw /COPYING COPYING.LIB COPYING.LESSER/)
5029 {
5030 if (-f $_)
5031 {
5032 $license = $_;
5033 last;
5034 }
5035 }
5036 require_file ("$am_file.am", GNU, 'COPYING')
5037 unless $license;
5038 }
5040 for my $opt ('no-installman', 'no-installinfo')
5041 {
5042 msg ('error-gnu', option $opt,
5043 "option `$opt' disallowed by GNU standards")
5044 if option $opt;
5045 }
5046 }
5048 # Do any extra checking for GNITS standards.
5049 sub check_gnits_standards
5050 {
5051 if ($relative_dir eq '.')
5052 {
5053 # In top level (or only) directory.
5054 require_file ("$am_file.am", GNITS, 'THANKS');
5055 }
5056 }
5058 ################################################################
5059 #
5060 # Functions to handle files of each language.
5062 # Each `lang_X_rewrite($DIRECTORY, $BASE, $EXT)' function follows a
5063 # simple formula: Return value is LANG_SUBDIR if the resulting object
5064 # file should be in a subdir if the source file is, LANG_PROCESS if
5065 # file is to be dealt with, LANG_IGNORE otherwise.
5067 # Much of the actual processing is handled in
5068 # handle_single_transform. These functions exist so that
5069 # auxiliary information can be recorded for a later cleanup pass.
5070 # Note that the calls to these functions are computed, so don't bother
5071 # searching for their precise names in the source.
5073 # This is just a convenience function that can be used to determine
5074 # when a subdir object should be used.
5075 sub lang_sub_obj
5076 {
5077 return option 'subdir-objects' ? LANG_SUBDIR : LANG_PROCESS;
5078 }
5080 # Rewrite a single C source file.
5081 sub lang_c_rewrite
5082 {
5083 my ($directory, $base, $ext, $nonansi_obj, $have_per_exec_flags, $var) = @_;
5085 if (option 'ansi2knr' && $base =~ /_$/)
5086 {
5087 # FIXME: include line number in error.
5088 err_am "C source file `$base.c' would be deleted by ansi2knr rules";
5089 }
5091 my $r = LANG_PROCESS;
5092 if (option 'subdir-objects')
5093 {
5094 $r = LANG_SUBDIR;
5095 if ($directory && $directory ne '.')
5096 {
5097 $base = $directory . '/' . $base;
5099 # libtool is always able to put the object at the proper place,
5100 # so we do not have to require AM_PROG_CC_C_O when building .lo files.
5101 err_var ($var, "compiling `$base.c' in subdir requires "
5102 . "`AM_PROG_CC_C_O' in `$configure_ac'",
5103 uniq_scope => US_GLOBAL, uniq_part => UP_TEXT)
5104 unless $seen_cc_c_o || $nonansi_obj eq '.lo';
5105 }
5107 # In this case we already have the directory information, so
5108 # don't add it again.
5109 $de_ansi_files{$base} = '';
5110 }
5111 else
5112 {
5113 $de_ansi_files{$base} = (($directory eq '.' || $directory eq '')
5114 ? ''
5115 : "$directory/");
5116 }
5118 if (! $seen_cc_c_o
5119 && $have_per_exec_flags
5120 && ! option 'subdir-objects'
5121 && $nonansi_obj ne '.lo')
5122 {
5123 err_var ($var, "compiling `$base.c' with per-target flags requires "
5124 . "`AM_PROG_CC_C_O' in `$configure_ac'",
5125 uniq_scope => US_GLOBAL, uniq_part => UP_TEXT)
5126 }
5128 return $r;
5129 }
5131 # Rewrite a single C++ source file.
5132 sub lang_cxx_rewrite
5133 {
5134 return &lang_sub_obj;
5135 }
5137 # Rewrite a single header file.
5138 sub lang_header_rewrite
5139 {
5140 # Header files are simply ignored.
5141 return LANG_IGNORE;
5142 }
5144 # Rewrite a single yacc file.
5145 sub lang_yacc_rewrite
5146 {
5147 my ($directory, $base, $ext) = @_;
5149 my $r = &lang_sub_obj;
5150 (my $newext = $ext) =~ tr/y/c/;
5151 return ($r, $newext);
5152 }
5154 # Rewrite a single yacc++ file.
5155 sub lang_yaccxx_rewrite
5156 {
5157 my ($directory, $base, $ext) = @_;
5159 my $r = &lang_sub_obj;
5160 (my $newext = $ext) =~ tr/y/c/;
5161 return ($r, $newext);
5162 }
5164 # Rewrite a single lex file.
5165 sub lang_lex_rewrite
5166 {
5167 my ($directory, $base, $ext) = @_;
5169 my $r = &lang_sub_obj;
5170 (my $newext = $ext) =~ tr/l/c/;
5171 return ($r, $newext);
5172 }
5174 # Rewrite a single lex++ file.
5175 sub lang_lexxx_rewrite
5176 {
5177 my ($directory, $base, $ext) = @_;
5179 my $r = &lang_sub_obj;
5180 (my $newext = $ext) =~ tr/l/c/;
5181 return ($r, $newext);
5182 }
5184 # Rewrite a single assembly file.
5185 sub lang_asm_rewrite
5186 {
5187 return &lang_sub_obj;
5188 }
5190 # Rewrite a single Fortran 77 file.
5191 sub lang_f77_rewrite
5192 {
5193 return LANG_PROCESS;
5194 }
5196 # Rewrite a single Fortran file.
5197 sub lang_fc_rewrite
5198 {
5199 return LANG_PROCESS;
5200 }
5202 # Rewrite a single preprocessed Fortran file.
5203 sub lang_ppfc_rewrite
5204 {
5205 return LANG_PROCESS;
5206 }
5208 # Rewrite a single preprocessed Fortran 77 file.
5209 sub lang_ppf77_rewrite
5210 {
5211 return LANG_PROCESS;
5212 }
5214 # Rewrite a single ratfor file.
5215 sub lang_ratfor_rewrite
5216 {
5217 return LANG_PROCESS;
5218 }
5220 # Rewrite a single Objective C file.
5221 sub lang_objc_rewrite
5222 {
5223 return &lang_sub_obj;
5224 }
5226 # Rewrite a single Java file.
5227 sub lang_java_rewrite
5228 {
5229 return LANG_SUBDIR;
5230 }
5232 # The lang_X_finish functions are called after all source file
5233 # processing is done. Each should handle defining rules for the
5234 # language, etc. A finish function is only called if a source file of
5235 # the appropriate type has been seen.
5237 sub lang_c_finish
5238 {
5239 # Push all libobjs files onto de_ansi_files. We actually only
5240 # push files which exist in the current directory, and which are
5241 # genuine source files.
5242 foreach my $file (keys %libsources)
5243 {
5244 if ($file =~ /^(.*)\.[cly]$/ && -f "$relative_dir/$file")
5245 {
5246 $de_ansi_files{$1} = ''
5247 }
5248 }
5250 if (option 'ansi2knr' && keys %de_ansi_files)
5251 {
5252 # Make all _.c files depend on their corresponding .c files.
5253 my @objects;
5254 foreach my $base (sort keys %de_ansi_files)
5255 {
5256 # Each _.c file must depend on ansi2knr; otherwise it
5257 # might be used in a parallel build before it is built.
5258 # We need to support files in the srcdir and in the build
5259 # dir (because these files might be auto-generated. But
5260 # we can't use $< -- some makes only define $< during a
5261 # suffix rule.
5262 my $ansfile = $de_ansi_files{$base} . $base . '.c';
5263 $output_rules .= ($base . "_.c: $ansfile \$(ANSI2KNR)\n\t"
5264 . '$(CPP) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS) $(CPPFLAGS) '
5265 . '`if test -f $(srcdir)/' . $ansfile
5266 . '; then echo $(srcdir)/' . $ansfile
5267 . '; else echo ' . $ansfile . '; fi` '
5268 . "| sed 's/^# \\([0-9]\\)/#line \\1/' "
5269 . '| $(ANSI2KNR) > $@'
5270 # If ansi2knr fails then we shouldn't
5271 # create the _.c file
5272 . " || rm -f \$\@\n");
5273 push (@objects, $base . '_.$(OBJEXT)');
5274 push (@objects, $base . '_.lo')
5275 if var ('LIBTOOL');
5277 # Explicitly clean the _.c files if they are in a
5278 # subdirectory. (In the current directory they get erased
5279 # by a `rm -f *_.c' rule.)
5280 $clean_files{$base . '_.c'} = MOSTLY_CLEAN
5281 if dirname ($base) ne '.';
5282 }
5284 # Make all _.o (and _.lo) files depend on ansi2knr.
5285 # Use a sneaky little hack to make it print nicely.
5286 &pretty_print_rule ('', '', @objects, ':', '$(ANSI2KNR)');
5287 }
5288 }
5290 # This is a yacc helper which is called whenever we have decided to
5291 # compile a yacc file.
5292 sub lang_yacc_target_hook
5293 {
5294 my ($self, $aggregate, $output, $input, %transform) = @_;
5296 my $flag = $aggregate . "_YFLAGS";
5297 my $flagvar = var $flag;
5298 my $YFLAGSvar = var 'YFLAGS';
5299 if (($flagvar && $flagvar->variable_value =~ /$DASH_D_PATTERN/o)
5300 || ($YFLAGSvar && $YFLAGSvar->variable_value =~ /$DASH_D_PATTERN/o))
5301 {
5302 (my $output_base = $output) =~ s/$KNOWN_EXTENSIONS_PATTERN$//;
5303 my $header = $output_base . '.h';
5305 # Found a `-d' that applies to the compilation of this file.
5306 # Add a dependency for the generated header file, and arrange
5307 # for that file to be included in the distribution.
5308 foreach my $cond (Automake::Rule::define (${header}, 'internal',
5309 RULE_AUTOMAKE, TRUE,
5310 INTERNAL))
5311 {
5312 my $condstr = $cond->subst_string;
5313 $output_rules .= ("$condstr${header}: $output\n"
5314 # Recover from removal of $header
5315 . "$condstr\t\@if test ! -f \$@; then \\\n"
5316 . "$condstr\t rm -f $output; \\\n"
5317 . "$condstr\t \$(MAKE) $output; \\\n"
5318 . "$condstr\telse :; fi\n");
5319 }
5320 # Distribute the generated file, unless its .y source was
5321 # listed in a nodist_ variable. (&handle_source_transform
5322 # will set DIST_SOURCE.)
5323 &push_dist_common ($header)
5324 if $transform{'DIST_SOURCE'};
5326 # If the files are built in the build directory, then we want
5327 # to remove them with `make clean'. If they are in srcdir
5328 # they shouldn't be touched. However, we can't determine this
5329 # statically, and the GNU rules say that yacc/lex output files
5330 # should be removed by maintainer-clean. So that's what we
5331 # do.
5332 $clean_files{$header} = MAINTAINER_CLEAN;
5333 }
5334 # Erase $OUTPUT on `make maintainer-clean' (by GNU standards).
5335 # See the comment above for $HEADER.
5336 $clean_files{$output} = MAINTAINER_CLEAN;
5337 }
5339 # This is a lex helper which is called whenever we have decided to
5340 # compile a lex file.
5341 sub lang_lex_target_hook
5342 {
5343 my ($self, $aggregate, $output, $input) = @_;
5344 # If the files are built in the build directory, then we want to
5345 # remove them with `make clean'. If they are in srcdir they
5346 # shouldn't be touched. However, we can't determine this
5347 # statically, and the GNU rules say that yacc/lex output files
5348 # should be removed by maintainer-clean. So that's what we do.
5349 $clean_files{$output} = MAINTAINER_CLEAN;
5350 }
5352 # This is a helper for both lex and yacc.
5353 sub yacc_lex_finish_helper
5354 {
5355 return if defined $language_scratch{'lex-yacc-done'};
5356 $language_scratch{'lex-yacc-done'} = 1;
5358 # If there is more than one distinct yacc (resp lex) source file
5359 # in a given directory, then the `ylwrap' program is required to
5360 # allow parallel builds to work correctly. FIXME: for now, no
5361 # line number.
5362 require_conf_file ($configure_ac, FOREIGN, 'ylwrap');
5363 &define_variable ('YLWRAP', "$am_config_aux_dir/ylwrap", INTERNAL);
5364 }
5366 sub lang_yacc_finish
5367 {
5368 return if defined $language_scratch{'yacc-done'};
5369 $language_scratch{'yacc-done'} = 1;
5371 reject_var 'YACCFLAGS', "`YACCFLAGS' obsolete; use `YFLAGS' instead";
5373 &yacc_lex_finish_helper
5374 if count_files_for_language ('yacc') > 1;
5375 }
5378 sub lang_lex_finish
5379 {
5380 return if defined $language_scratch{'lex-done'};
5381 $language_scratch{'lex-done'} = 1;
5383 &yacc_lex_finish_helper
5384 if count_files_for_language ('lex') > 1;
5385 }
5388 # Given a hash table of linker names, pick the name that has the most
5389 # precedence. This is lame, but something has to have global
5390 # knowledge in order to eliminate the conflict. Add more linkers as
5391 # required.
5392 sub resolve_linker
5393 {
5394 my (%linkers) = @_;
5396 foreach my $l (qw(GCJLINK CXXLINK F77LINK FCLINK OBJCLINK))
5397 {
5398 return $l if defined $linkers{$l};
5399 }
5400 return 'LINK';
5401 }
5403 # Called to indicate that an extension was used.
5404 sub saw_extension
5405 {
5406 my ($ext) = @_;
5407 if (! defined $extension_seen{$ext})
5408 {
5409 $extension_seen{$ext} = 1;
5410 }
5411 else
5412 {
5413 ++$extension_seen{$ext};
5414 }
5415 }
5417 # Return the number of files seen for a given language. Knows about
5418 # special cases we care about. FIXME: this is hideous. We need
5419 # something that involves real language objects. For instance yacc
5420 # and yaccxx could both derive from a common yacc class which would
5421 # know about the strange ylwrap requirement. (Or better yet we could
5422 # just not support legacy yacc!)
5423 sub count_files_for_language
5424 {
5425 my ($name) = @_;
5427 my @names;
5428 if ($name eq 'yacc' || $name eq 'yaccxx')
5429 {
5430 @names = ('yacc', 'yaccxx');
5431 }
5432 elsif ($name eq 'lex' || $name eq 'lexxx')
5433 {
5434 @names = ('lex', 'lexxx');
5435 }
5436 else
5437 {
5438 @names = ($name);
5439 }
5441 my $r = 0;
5442 foreach $name (@names)
5443 {
5444 my $lang = $languages{$name};
5445 foreach my $ext (@{$lang->extensions})
5446 {
5447 $r += $extension_seen{$ext}
5448 if defined $extension_seen{$ext};
5449 }
5450 }
5452 return $r
5453 }
5455 # Called to ask whether source files have been seen . If HEADERS is 1,
5456 # headers can be included.
5457 sub saw_sources_p
5458 {
5459 my ($headers) = @_;
5461 # count all the sources
5462 my $count = 0;
5463 foreach my $val (values %extension_seen)
5464 {
5465 $count += $val;
5466 }
5468 if (!$headers)
5469 {
5470 $count -= count_files_for_language ('header');
5471 }
5473 return $count > 0;
5474 }
5477 # register_language (%ATTRIBUTE)
5478 # ------------------------------
5479 # Register a single language.
5480 # Each %ATTRIBUTE is of the form ATTRIBUTE => VALUE.
5481 sub register_language (%)
5482 {
5483 my (%option) = @_;
5485 # Set the defaults.
5486 $option{'ansi'} = 0
5487 unless defined $option{'ansi'};
5488 $option{'autodep'} = 'no'
5489 unless defined $option{'autodep'};
5490 $option{'linker'} = ''
5491 unless defined $option{'linker'};
5492 $option{'flags'} = []
5493 unless defined $option{'flags'};
5494 $option{'output_extensions'} = sub { return ( '.$(OBJEXT)', '.lo' ) }
5495 unless defined $option{'output_extensions'};
5496 $option{'nodist_specific'} = 0
5497 unless defined $option{'nodist_specific'};
5499 my $lang = new Language (%option);
5501 # Fill indexes.
5502 $extension_map{$_} = $lang->name foreach @{$lang->extensions};
5503 $languages{$lang->name} = $lang;
5505 # Update the pattern of known extensions.
5506 accept_extensions (@{$lang->extensions});
5508 # Upate the $suffix_rule map.
5509 foreach my $suffix (@{$lang->extensions})
5510 {
5511 foreach my $dest (&{$lang->output_extensions} ($suffix))
5512 {
5513 register_suffix_rule (INTERNAL, $suffix, $dest);
5514 }
5515 }
5516 }
5518 # derive_suffix ($EXT, $OBJ)
5519 # --------------------------
5520 # This function is used to find a path from a user-specified suffix $EXT
5521 # to $OBJ or to some other suffix we recognize internally, e.g. `cc'.
5522 sub derive_suffix ($$)
5523 {
5524 my ($source_ext, $obj) = @_;
5526 while (! $extension_map{$source_ext}
5527 && $source_ext ne $obj
5528 && exists $suffix_rules->{$source_ext}
5529 && exists $suffix_rules->{$source_ext}{$obj})
5530 {
5531 $source_ext = $suffix_rules->{$source_ext}{$obj}[0];
5532 }
5534 return $source_ext;
5535 }
5538 ################################################################
5540 # Pretty-print something and append to output_rules.
5541 sub pretty_print_rule
5542 {
5543 $output_rules .= &makefile_wrap (@_);
5544 }
5547 ################################################################
5550 ## -------------------------------- ##
5551 ## Handling the conditional stack. ##
5552 ## -------------------------------- ##
5555 # $STRING
5556 # make_conditional_string ($NEGATE, $COND)
5557 # ----------------------------------------
5558 sub make_conditional_string ($$)
5559 {
5560 my ($negate, $cond) = @_;
5561 $cond = "${cond}_TRUE"
5562 unless $cond =~ /^TRUE|FALSE$/;
5563 $cond = Automake::Condition::conditional_negate ($cond)
5564 if $negate;
5565 return $cond;
5566 }
5569 # $COND
5570 # cond_stack_if ($NEGATE, $COND, $WHERE)
5571 # --------------------------------------
5572 sub cond_stack_if ($$$)
5573 {
5574 my ($negate, $cond, $where) = @_;
5576 error $where, "$cond does not appear in AM_CONDITIONAL"
5577 if ! $configure_cond{$cond} && $cond !~ /^TRUE|FALSE$/;
5579 push (@cond_stack, make_conditional_string ($negate, $cond));
5581 return new Automake::Condition (@cond_stack);
5582 }
5585 # $COND
5586 # cond_stack_else ($NEGATE, $COND, $WHERE)
5587 # ----------------------------------------
5588 sub cond_stack_else ($$$)
5589 {
5590 my ($negate, $cond, $where) = @_;
5592 if (! @cond_stack)
5593 {
5594 error $where, "else without if";
5595 return FALSE;
5596 }
5598 $cond_stack[$#cond_stack] =
5599 Automake::Condition::conditional_negate ($cond_stack[$#cond_stack]);
5601 # If $COND is given, check against it.
5602 if (defined $cond)
5603 {
5604 $cond = make_conditional_string ($negate, $cond);
5606 error ($where, "else reminder ($negate$cond) incompatible with "
5607 . "current conditional: $cond_stack[$#cond_stack]")
5608 if $cond_stack[$#cond_stack] ne $cond;
5609 }
5611 return new Automake::Condition (@cond_stack);
5612 }
5615 # $COND
5616 # cond_stack_endif ($NEGATE, $COND, $WHERE)
5617 # -----------------------------------------
5618 sub cond_stack_endif ($$$)
5619 {
5620 my ($negate, $cond, $where) = @_;
5621 my $old_cond;
5623 if (! @cond_stack)
5624 {
5625 error $where, "endif without if";
5626 return TRUE;
5627 }
5629 # If $COND is given, check against it.
5630 if (defined $cond)
5631 {
5632 $cond = make_conditional_string ($negate, $cond);
5634 error ($where, "endif reminder ($negate$cond) incompatible with "
5635 . "current conditional: $cond_stack[$#cond_stack]")
5636 if $cond_stack[$#cond_stack] ne $cond;
5637 }
5639 pop @cond_stack;
5641 return new Automake::Condition (@cond_stack);
5642 }
5648 ## ------------------------ ##
5649 ## Handling the variables. ##
5650 ## ------------------------ ##
5653 # &define_pretty_variable ($VAR, $COND, $WHERE, @VALUE)
5654 # -----------------------------------------------------
5655 # Like define_variable, but the value is a list, and the variable may
5656 # be defined conditionally. The second argument is the Condition
5657 # under which the value should be defined; this should be the empty
5658 # string to define the variable unconditionally. The third argument
5659 # is a list holding the values to use for the variable. The value is
5660 # pretty printed in the output file.
5661 sub define_pretty_variable ($$$@)
5662 {
5663 my ($var, $cond, $where, @value) = @_;
5665 if (! vardef ($var, $cond))
5666 {
5667 Automake::Variable::define ($var, VAR_AUTOMAKE, '', $cond, "@value",
5668 '', $where, VAR_PRETTY);
5669 rvar ($var)->rdef ($cond)->set_seen;
5670 }
5671 }
5674 # define_variable ($VAR, $VALUE, $WHERE)
5675 # --------------------------------------
5676 # Define a new user variable VAR to VALUE, but only if not already defined.
5677 sub define_variable ($$$)
5678 {
5679 my ($var, $value, $where) = @_;
5680 define_pretty_variable ($var, TRUE, $where, $value);
5681 }
5684 # define_files_variable ($VAR, \@BASENAME, $EXTENSION, $WHERE)
5685 # -----------------------------------------------------------
5686 # Define the $VAR which content is the list of file names composed of
5687 # a @BASENAME and the $EXTENSION.
5688 sub define_files_variable ($\@$$)
5689 {
5690 my ($var, $basename, $extension, $where) = @_;
5691 define_variable ($var,
5692 join (' ', map { "$_.$extension" } @$basename),
5693 $where);
5694 }
5697 # Like define_variable, but define a variable to be the configure
5698 # substitution by the same name.
5699 sub define_configure_variable ($)
5700 {
5701 my ($var) = @_;
5703 my $pretty = VAR_ASIS;
5704 my $owner = VAR_CONFIGURE;
5706 # Do not output the ANSI2KNR configure variable -- we AC_SUBST
5707 # it in protos.m4, but later redefine it elsewhere. This is
5708 # pretty hacky. We also don't output AMDEPBACKSLASH: it might
5709 # be subst'd by `\', which certainly would not be appreciated by
5710 # Make.
5711 if ($var eq 'ANSI2KNR' || $var eq 'AMDEPBACKSLASH')
5712 {
5713 $pretty = VAR_SILENT;
5714 $owner = VAR_AUTOMAKE;
5715 }
5717 Automake::Variable::define ($var, $owner, '', TRUE, subst $var,
5718 '', $configure_vars{$var}, $pretty);
5719 }
5722 # define_compiler_variable ($LANG)
5723 # --------------------------------
5724 # Define a compiler variable. We also handle defining the `LT'
5725 # version of the command when using libtool.
5726 sub define_compiler_variable ($)
5727 {
5728 my ($lang) = @_;
5730 my ($var, $value) = ($lang->compiler, $lang->compile);
5731 my $libtool_tag = '';
5732 $libtool_tag = '--tag=' . $lang->libtool_tag . ' '
5733 if $lang->libtool_tag && exists $libtool_tags{$lang->libtool_tag};
5734 &define_variable ($var, $value, INTERNAL);
5735 &define_variable ("LT$var",
5736 "\$(LIBTOOL) --mode=compile $libtool_tag$value",
5737 INTERNAL)
5738 if var ('LIBTOOL');
5739 }
5742 # define_linker_variable ($LANG)
5743 # ------------------------------
5744 # Define linker variables.
5745 sub define_linker_variable ($)
5746 {
5747 my ($lang) = @_;
5749 my ($var, $value) = ($lang->lder, $lang->ld);
5750 my $libtool_tag = '';
5751 $libtool_tag = '--tag=' . $lang->libtool_tag . ' '
5752 if $lang->libtool_tag && exists $libtool_tags{$lang->libtool_tag};
5753 # CCLD = $(CC).
5754 &define_variable ($lang->lder, $lang->ld, INTERNAL);
5755 # CCLINK = $(CCLD) blah blah...
5756 &define_variable ($lang->linker,
5757 ((var ('LIBTOOL') ?
5758 '$(LIBTOOL) --mode=link ' . $libtool_tag : '')
5759 . $lang->link),
5760 INTERNAL);
5761 }
5763 ################################################################
5765 # &check_trailing_slash ($WHERE, $LINE)
5766 # --------------------------------------
5767 # Return 1 iff $LINE ends with a slash.
5768 # Might modify $LINE.
5769 sub check_trailing_slash ($\$)
5770 {
5771 my ($where, $line) = @_;
5773 # Ignore `##' lines.
5774 return 0 if $$line =~ /$IGNORE_PATTERN/o;
5776 # Catch and fix a common error.
5777 msg "syntax", $where, "whitespace following trailing backslash"
5778 if $$line =~ s/\\\s+\n$/\\\n/;
5780 return $$line =~ /\\$/;
5781 }
5784 # &read_am_file ($AMFILE, $WHERE)
5785 # -------------------------------
5786 # Read Makefile.am and set up %contents. Simultaneously copy lines
5787 # from Makefile.am into $output_trailer, or define variables as
5788 # appropriate. NOTE we put rules in the trailer section. We want
5789 # user rules to come after our generated stuff.
5790 sub read_am_file ($$)
5791 {
5792 my ($amfile, $where) = @_;
5794 my $am_file = new Automake::XFile ("< $amfile");
5795 verb "reading $amfile";
5797 # Keep track of the youngest output dependency.
5798 my $mtime = mtime $amfile;
5799 $output_deps_greatest_timestamp = $mtime
5800 if $mtime > $output_deps_greatest_timestamp;
5802 my $spacing = '';
5803 my $comment = '';
5804 my $blank = 0;
5805 my $saw_bk = 0;
5807 use constant IN_VAR_DEF => 0;
5808 use constant IN_RULE_DEF => 1;
5809 use constant IN_COMMENT => 2;
5810 my $prev_state = IN_RULE_DEF;
5812 while ($_ = $am_file->getline)
5813 {
5814 $where->set ("$amfile:$.");
5815 if (/$IGNORE_PATTERN/o)
5816 {
5817 # Merely delete comments beginning with two hashes.
5818 }
5819 elsif (/$WHITE_PATTERN/o)
5820 {
5821 error $where, "blank line following trailing backslash"
5822 if $saw_bk;
5823 # Stick a single white line before the incoming macro or rule.
5824 $spacing = "\n";
5825 $blank = 1;
5826 # Flush all comments seen so far.
5827 if ($comment ne '')
5828 {
5829 $output_vars .= $comment;
5830 $comment = '';
5831 }
5832 }
5833 elsif (/$COMMENT_PATTERN/o)
5834 {
5835 # Stick comments before the incoming macro or rule. Make
5836 # sure a blank line precedes the first block of comments.
5837 $spacing = "\n" unless $blank;
5838 $blank = 1;
5839 $comment .= $spacing . $_;
5840 $spacing = '';
5841 $prev_state = IN_COMMENT;
5842 }
5843 else
5844 {
5845 last;
5846 }
5847 $saw_bk = check_trailing_slash ($where, $_);
5848 }
5850 # We save the conditional stack on entry, and then check to make
5851 # sure it is the same on exit. This lets us conditionally include
5852 # other files.
5853 my @saved_cond_stack = @cond_stack;
5854 my $cond = new Automake::Condition (@cond_stack);
5856 my $last_var_name = '';
5857 my $last_var_type = '';
5858 my $last_var_value = '';
5859 my $last_where;
5860 # FIXME: shouldn't use $_ in this loop; it is too big.
5861 while ($_)
5862 {
5863 $where->set ("$amfile:$.");
5865 # Make sure the line is \n-terminated.
5866 chomp;
5867 $_ .= "\n";
5869 # Don't look at MAINTAINER_MODE_TRUE here. That shouldn't be
5870 # used by users. @MAINT@ is an anachronism now.
5871 $_ =~ s/\@MAINT\@//g
5872 unless $seen_maint_mode;
5874 my $new_saw_bk = check_trailing_slash ($where, $_);
5876 if (/$IGNORE_PATTERN/o)
5877 {
5878 # Merely delete comments beginning with two hashes.
5879 }
5880 elsif (/$WHITE_PATTERN/o)
5881 {
5882 # Stick a single white line before the incoming macro or rule.
5883 $spacing = "\n";
5884 error $where, "blank line following trailing backslash"
5885 if $saw_bk;
5886 }
5887 elsif (/$COMMENT_PATTERN/o)
5888 {
5889 # Stick comments before the incoming macro or rule.
5890 $comment .= $spacing . $_;
5891 $spacing = '';
5892 error $where, "comment following trailing backslash"
5893 if $saw_bk && $comment eq '';
5894 $prev_state = IN_COMMENT;
5895 }
5896 elsif ($saw_bk)
5897 {
5898 if ($prev_state == IN_RULE_DEF)
5899 {
5900 my $cond = new Automake::Condition @cond_stack;
5901 $output_trailer .= $cond->subst_string;
5902 $output_trailer .= $_;
5903 }
5904 elsif ($prev_state == IN_COMMENT)
5905 {
5906 # If the line doesn't start with a `#', add it.
5907 # We do this because a continued comment like
5908 # # A = foo \
5909 # bar \
5910 # baz
5911 # is not portable. BSD make doesn't honor
5912 # escaped newlines in comments.
5913 s/^#?/#/;
5914 $comment .= $spacing . $_;
5915 }
5916 else # $prev_state == IN_VAR_DEF
5917 {
5918 $last_var_value .= ' '
5919 unless $last_var_value =~ /\s$/;
5920 $last_var_value .= $_;
5922 if (!/\\$/)
5923 {
5924 Automake::Variable::define ($last_var_name, VAR_MAKEFILE,
5925 $last_var_type, $cond,
5926 $last_var_value, $comment,
5927 $last_where, VAR_ASIS)
5928 if $cond != FALSE;
5929 $comment = $spacing = '';
5930 }
5931 }
5932 }
5934 elsif (/$IF_PATTERN/o)
5935 {
5936 $cond = cond_stack_if ($1, $2, $where);
5937 }
5938 elsif (/$ELSE_PATTERN/o)
5939 {
5940 $cond = cond_stack_else ($1, $2, $where);
5941 }
5942 elsif (/$ENDIF_PATTERN/o)
5943 {
5944 $cond = cond_stack_endif ($1, $2, $where);
5945 }
5947 elsif (/$RULE_PATTERN/o)
5948 {
5949 # Found a rule.
5950 $prev_state = IN_RULE_DEF;
5952 # For now we have to output all definitions of user rules
5953 # and can't diagnose duplicates (see the comment in
5954 # rule_define). So we go on and ignore the return value.
5955 Automake::Rule::define ($1, $amfile, RULE_USER, $cond, $where);
5957 check_variable_expansions ($_, $where);
5959 $output_trailer .= $comment . $spacing;
5960 my $cond = new Automake::Condition @cond_stack;
5961 $output_trailer .= $cond->subst_string;
5962 $output_trailer .= $_;
5963 $comment = $spacing = '';
5964 }
5965 elsif (/$ASSIGNMENT_PATTERN/o)
5966 {
5967 # Found a macro definition.
5968 $prev_state = IN_VAR_DEF;
5969 $last_var_name = $1;
5970 $last_var_type = $2;
5971 $last_var_value = $3;
5972 $last_where = $where->clone;
5973 if ($3 ne '' && substr ($3, -1) eq "\\")
5974 {
5975 # We preserve the `\' because otherwise the long lines
5976 # that are generated will be truncated by broken
5977 # `sed's.
5978 $last_var_value = $3 . "\n";
5979 }
5981 if (!/\\$/)
5982 {
5983 Automake::Variable::define ($last_var_name, VAR_MAKEFILE,
5984 $last_var_type, $cond,
5985 $last_var_value, $comment,
5986 $last_where, VAR_ASIS)
5987 if $cond != FALSE;
5988 $comment = $spacing = '';
5989 }
5990 }
5991 elsif (/$INCLUDE_PATTERN/o)
5992 {
5993 my $path = $1;
5995 if ($path =~ s/^\$\(top_srcdir\)\///)
5996 {
5997 push (@include_stack, "\$\(top_srcdir\)/$path");
5998 # Distribute any included file.
6000 # Always use the $(top_srcdir) prefix in DIST_COMMON,
6001 # otherwise OSF make will implicitly copy the included
6002 # file in the build tree during `make distdir' to satisfy
6003 # the dependency.
6004 # (subdircond2.test and subdircond3.test will fail.)
6005 push_dist_common ("\$\(top_srcdir\)/$path");
6006 }
6007 else
6008 {
6009 $path =~ s/\$\(srcdir\)\///;
6010 push (@include_stack, "\$\(srcdir\)/$path");
6011 # Always use the $(srcdir) prefix in DIST_COMMON,
6012 # otherwise OSF make will implicitly copy the included
6013 # file in the build tree during `make distdir' to satisfy
6014 # the dependency.
6015 # (subdircond2.test and subdircond3.test will fail.)
6016 push_dist_common ("\$\(srcdir\)/$path");
6017 $path = $relative_dir . "/" . $path if $relative_dir ne '.';
6018 }
6019 $where->push_context ("`$path' included from here");
6020 &read_am_file ($path, $where);
6021 $where->pop_context;
6022 }
6023 else
6024 {
6025 # This isn't an error; it is probably a continued rule.
6026 # In fact, this is what we assume.
6027 $prev_state = IN_RULE_DEF;
6028 check_variable_expansions ($_, $where);
6029 $output_trailer .= $comment . $spacing;
6030 my $cond = new Automake::Condition @cond_stack;
6031 $output_trailer .= $cond->subst_string;
6032 $output_trailer .= $_;
6033 $comment = $spacing = '';
6034 error $where, "`#' comment at start of rule is unportable"
6035 if $_ =~ /^\t\s*\#/;
6036 }
6038 $saw_bk = $new_saw_bk;
6039 $_ = $am_file->getline;
6040 }
6042 $output_trailer .= $comment;
6044 error ($where, "trailing backslash on last line")
6045 if $saw_bk;
6047 error ($where, (@cond_stack ? "unterminated conditionals: @cond_stack"
6048 : "too many conditionals closed in include file"))
6049 if "@saved_cond_stack" ne "@cond_stack";
6050 }
6053 # define_standard_variables ()
6054 # ----------------------------
6055 # A helper for read_main_am_file which initializes configure variables
6056 # and variables from header-vars.am.
6057 sub define_standard_variables
6058 {
6059 my $saved_output_vars = $output_vars;
6060 my ($comments, undef, $rules) =
6061 file_contents_internal (1, "$libdir/am/header-vars.am",
6062 new Automake::Location);
6064 foreach my $var (sort keys %configure_vars)
6065 {
6066 &define_configure_variable ($var);
6067 }
6069 $output_vars .= $comments . $rules;
6070 }
6072 # Read main am file.
6073 sub read_main_am_file
6074 {
6075 my ($amfile) = @_;
6077 # This supports the strange variable tricks we are about to play.
6078 prog_error (macros_dump () . "variable defined before read_main_am_file")
6079 if (scalar (variables) > 0);
6081 # Generate copyright header for generated Makefile.in.
6082 # We do discard the output of predefined variables, handled below.
6083 $output_vars = ("# $in_file_name generated by automake "
6084 . $VERSION . " from $am_file_name.\n");
6085 $output_vars .= '# ' . subst ('configure_input') . "\n";
6086 $output_vars .= $gen_copyright;
6088 # We want to predefine as many variables as possible. This lets
6089 # the user set them with `+=' in Makefile.am.
6090 &define_standard_variables;
6092 # Read user file, which might override some of our values.
6093 &read_am_file ($amfile, new Automake::Location);
6094 }
6098 ################################################################
6100 # $FLATTENED
6101 # &flatten ($STRING)
6102 # ------------------
6103 # Flatten the $STRING and return the result.
6104 sub flatten
6105 {
6106 $_ = shift;
6108 s/\\\n//somg;
6109 s/\s+/ /g;
6110 s/^ //;
6111 s/ $//;
6113 return $_;
6114 }
6116 # transform($TOKEN, \%PAIRS)
6117 # ==========================
6118 # If ($TOKEN, $VAL) is in %PAIRS:
6119 # - replaces %$TOKEN% with $VAL,
6120 # - enables/disables ?$TOKEN? and ?!$TOKEN?,
6121 # - replaces %?$TOKEN% with TRUE or FALSE.
6122 sub transform($$)
6123 {
6124 my ($token, $transform) = @_;
6126 if (substr ($token, 0, 1) eq '%')
6127 {
6128 my $cond = (substr ($token, 1, 1) eq '?') ? 1 : 0;
6129 $token = substr ($token, 1 + $cond, -1);
6130 my $val = $transform->{$token};
6131 prog_error "Unknown %token% `$token'" unless defined $val;
6132 if ($cond)
6133 {
6134 return $val ? 'TRUE' : 'FALSE';
6135 }
6136 else
6137 {
6138 return $val;
6139 }
6140 }
6141 # Now $token is '?xxx?' or '?!xxx?'.
6142 my $neg = (substr ($token, 1, 1) eq '!') ? 1 : 0;
6143 $token = substr ($token, 1 + $neg, -1);
6144 my $val = $transform->{$token};
6145 prog_error "Unknown ?token? `$token' (neg = $neg)" unless defined $val;
6146 return (!!$val == $neg) ? '##%' : '';
6147 }
6149 # @PARAGRAPHS
6150 # &make_paragraphs ($MAKEFILE, [%TRANSFORM])
6151 # ------------------------------------------
6152 # Load a $MAKEFILE, apply the %TRANSFORM, and return it as a list of
6153 # paragraphs.
6154 sub make_paragraphs ($%)
6155 {
6156 my ($file, %transform) = @_;
6158 # Complete %transform with global options.
6159 # Note that %transform goes last, so it overrides global options.
6160 %transform = ('CYGNUS' => !! option 'cygnus',
6161 'MAINTAINER-MODE'
6162 => $seen_maint_mode ? subst ('MAINTAINER_MODE_TRUE') : '',
6164 'BZIP2' => !! option 'dist-bzip2',
6165 'COMPRESS' => !! option 'dist-tarZ',
6166 'GZIP' => ! option 'no-dist-gzip',
6167 'SHAR' => !! option 'dist-shar',
6168 'ZIP' => !! option 'dist-zip',
6170 'INSTALL-INFO' => ! option 'no-installinfo',
6171 'INSTALL-MAN' => ! option 'no-installman',
6172 'CK-NEWS' => !! option 'check-news',
6174 'SUBDIRS' => !! var ('SUBDIRS'),
6175 'TOPDIR' => backname ($relative_dir),
6176 'TOPDIR_P' => $relative_dir eq '.',
6178 'BUILD' => ($seen_canonical >= AC_CANONICAL_BUILD),
6179 'HOST' => ($seen_canonical >= AC_CANONICAL_HOST),
6180 'TARGET' => ($seen_canonical >= AC_CANONICAL_TARGET),
6182 'LIBTOOL' => !! var ('LIBTOOL'),
6183 'NONLIBTOOL' => 1,
6184 'FIRST' => ! $transformed_files{$file},
6185 %transform);
6187 $transformed_files{$file} = 1;
6188 $_ = $am_file_cache{$file};
6190 if (! defined $_)
6191 {
6192 verb "reading $file";
6193 # Swallow the whole file.
6194 my $fc_file = new Automake::XFile "< $file";
6195 my $saved_dollar_slash = $/;
6196 undef $/;
6197 $_ = $fc_file->getline;
6198 $/ = $saved_dollar_slash;
6199 $fc_file->close;
6201 # Remove ##-comments.
6202 # Besides we don't need more than two consecutive new-lines.
6203 s/(?:$IGNORE_PATTERN|(?<=\n\n)\n+)//gom;
6205 $am_file_cache{$file} = $_;
6206 }
6208 # Substitute Automake template tokens.
6209 s/(?:%\??[\w\-]+%|\?!?[\w\-]+\?)/transform($&, \%transform)/ge;
6210 # transform() may have added some ##%-comments to strip.
6211 # (we use `##%' instead of `##' so we can distinguish ##%##%##% from
6212 # ####### and do not remove the latter.)
6213 s/^[ \t]*(?:##%)+.*\n//gm;
6215 # Split at unescaped new lines.
6216 my @lines = split (/(?<!\\)\n/, $_);
6217 my @res;
6219 while (defined ($_ = shift @lines))
6220 {
6221 my $paragraph = $_;
6222 # If we are a rule, eat as long as we start with a tab.
6223 if (/$RULE_PATTERN/smo)
6224 {
6225 while (defined ($_ = shift @lines) && $_ =~ /^\t/)
6226 {
6227 $paragraph .= "\n$_";
6228 }
6229 unshift (@lines, $_);
6230 }
6232 # If we are a comments, eat as much comments as you can.
6233 elsif (/$COMMENT_PATTERN/smo)
6234 {
6235 while (defined ($_ = shift @lines)
6236 && $_ =~ /$COMMENT_PATTERN/smo)
6237 {
6238 $paragraph .= "\n$_";
6239 }
6240 unshift (@lines, $_);
6241 }
6243 push @res, $paragraph;
6244 }
6246 return @res;
6247 }
6251 # ($COMMENT, $VARIABLES, $RULES)
6252 # &file_contents_internal ($IS_AM, $FILE, $WHERE, [%TRANSFORM])
6253 # -------------------------------------------------------------
6254 # Return contents of a file from $libdir/am, automatically skipping
6255 # macros or rules which are already known. $IS_AM iff the caller is
6256 # reading an Automake file (as opposed to the user's Makefile.am).
6257 sub file_contents_internal ($$$%)
6258 {
6259 my ($is_am, $file, $where, %transform) = @_;
6261 $where->set ($file);
6263 my $result_vars = '';
6264 my $result_rules = '';
6265 my $comment = '';
6266 my $spacing = '';
6268 # The following flags are used to track rules spanning across
6269 # multiple paragraphs.
6270 my $is_rule = 0; # 1 if we are processing a rule.
6271 my $discard_rule = 0; # 1 if the current rule should not be output.
6273 # We save the conditional stack on entry, and then check to make
6274 # sure it is the same on exit. This lets us conditionally include
6275 # other files.
6276 my @saved_cond_stack = @cond_stack;
6277 my $cond = new Automake::Condition (@cond_stack);
6279 foreach (make_paragraphs ($file, %transform))
6280 {
6281 # FIXME: no line number available.
6282 $where->set ($file);
6284 # Sanity checks.
6285 error $where, "blank line following trailing backslash:\n$_"
6286 if /\\$/;
6287 error $where, "comment following trailing backslash:\n$_"
6288 if /\\#/;
6290 if (/^$/)
6291 {
6292 $is_rule = 0;
6293 # Stick empty line before the incoming macro or rule.
6294 $spacing = "\n";
6295 }
6296 elsif (/$COMMENT_PATTERN/mso)
6297 {
6298 $is_rule = 0;
6299 # Stick comments before the incoming macro or rule.
6300 $comment = "$_\n";
6301 }
6303 # Handle inclusion of other files.
6304 elsif (/$INCLUDE_PATTERN/o)
6305 {
6306 if ($cond != FALSE)
6307 {
6308 my $file = ($is_am ? "$libdir/am/" : '') . $1;
6309 $where->push_context ("`$file' included from here");
6310 # N-ary `.=' fails.
6311 my ($com, $vars, $rules)
6312 = file_contents_internal ($is_am, $file, $where, %transform);
6313 $where->pop_context;
6314 $comment .= $com;
6315 $result_vars .= $vars;
6316 $result_rules .= $rules;
6317 }
6318 }
6320 # Handling the conditionals.
6321 elsif (/$IF_PATTERN/o)
6322 {
6323 $cond = cond_stack_if ($1, $2, $file);
6324 }
6325 elsif (/$ELSE_PATTERN/o)
6326 {
6327 $cond = cond_stack_else ($1, $2, $file);
6328 }
6329 elsif (/$ENDIF_PATTERN/o)
6330 {
6331 $cond = cond_stack_endif ($1, $2, $file);
6332 }
6334 # Handling rules.
6335 elsif (/$RULE_PATTERN/mso)
6336 {
6337 $is_rule = 1;
6338 $discard_rule = 0;
6339 # Separate relationship from optional actions: the first
6340 # `new-line tab" not preceded by backslash (continuation
6341 # line).
6342 my $paragraph = $_;
6343 /^(.*?)(?:(?<!\\)\n(\t.*))?$/s;
6344 my ($relationship, $actions) = ($1, $2 || '');
6346 # Separate targets from dependencies: the first colon.
6347 $relationship =~ /^([^:]+\S+) *: *(.*)$/som;
6348 my ($targets, $dependencies) = ($1, $2);
6349 # Remove the escaped new lines.
6350 # I don't know why, but I have to use a tmp $flat_deps.
6351 my $flat_deps = &flatten ($dependencies);
6352 my @deps = split (' ', $flat_deps);
6354 foreach (split (' ' , $targets))
6355 {
6356 # FIXME: 1. We are not robust to people defining several targets
6357 # at once, only some of them being in %dependencies. The
6358 # actions from the targets in %dependencies are usually generated
6359 # from the content of %actions, but if some targets in $targets
6360 # are not in %dependencies the ELSE branch will output
6361 # a rule for all $targets (i.e. the targets which are both
6362 # in %dependencies and $targets will have two rules).
6364 # FIXME: 2. The logic here is not able to output a
6365 # multi-paragraph rule several time (e.g. for each condition
6366 # it is defined for) because it only knows the first paragraph.
6368 # FIXME: 3. We are not robust to people defining a subset
6369 # of a previously defined "multiple-target" rule. E.g.
6370 # `foo:' after `foo bar:'.
6372 # Output only if not in FALSE.
6373 if (defined $dependencies{$_} && $cond != FALSE)
6374 {
6375 &depend ($_, @deps);
6376 if ($actions{$_})
6377 {
6378 $actions{$_} .= "\n$actions" if $actions;
6379 }
6380 else
6381 {
6382 $actions{$_} = $actions;
6383 }
6384 }
6385 else
6386 {
6387 # Free-lance dependency. Output the rule for all the
6388 # targets instead of one by one.
6389 my @undefined_conds =
6390 Automake::Rule::define ($targets, $file,
6391 $is_am ? RULE_AUTOMAKE : RULE_USER,
6392 $cond, $where);
6393 for my $undefined_cond (@undefined_conds)
6394 {
6395 my $condparagraph = $paragraph;
6396 $condparagraph =~ s/^/$undefined_cond->subst_string/gme;
6397 $result_rules .= "$spacing$comment$condparagraph\n";
6398 }
6399 if (scalar @undefined_conds == 0)
6400 {
6401 # Remember to discard next paragraphs
6402 # if they belong to this rule.
6403 # (but see also FIXME: #2 above.)
6404 $discard_rule = 1;
6405 }
6406 $comment = $spacing = '';
6407 last;
6408 }
6409 }
6410 }
6412 elsif (/$ASSIGNMENT_PATTERN/mso)
6413 {
6414 my ($var, $type, $val) = ($1, $2, $3);
6415 error $where, "variable `$var' with trailing backslash"
6416 if /\\$/;
6418 $is_rule = 0;
6420 Automake::Variable::define ($var,
6421 $is_am ? VAR_AUTOMAKE : VAR_MAKEFILE,
6422 $type, $cond, $val, $comment, $where,
6423 VAR_ASIS)
6424 if $cond != FALSE;
6426 $comment = $spacing = '';
6427 }
6428 else
6429 {
6430 # This isn't an error; it is probably some tokens which
6431 # configure is supposed to replace, such as `@SET-MAKE@',
6432 # or some part of a rule cut by an if/endif.
6433 if (! $cond->false && ! ($is_rule && $discard_rule))
6434 {
6435 s/^/$cond->subst_string/gme;
6436 $result_rules .= "$spacing$comment$_\n";
6437 }
6438 $comment = $spacing = '';
6439 }
6440 }
6442 error ($where, @cond_stack ?
6443 "unterminated conditionals: @cond_stack" :
6444 "too many conditionals closed in include file")
6445 if "@saved_cond_stack" ne "@cond_stack";
6447 return ($comment, $result_vars, $result_rules);
6448 }
6451 # $CONTENTS
6452 # &file_contents ($BASENAME, $WHERE, [%TRANSFORM])
6453 # ------------------------------------------------
6454 # Return contents of a file from $libdir/am, automatically skipping
6455 # macros or rules which are already known.
6456 sub file_contents ($$%)
6457 {
6458 my ($basename, $where, %transform) = @_;
6459 my ($comments, $variables, $rules) =
6460 file_contents_internal (1, "$libdir/am/$basename.am", $where,
6461 %transform);
6462 return "$comments$variables$rules";
6463 }
6466 # &append_exeext ($MACRO)
6467 # -----------------------
6468 # Macro is an Automake magic macro which primary is PROGRAMS, e.g.
6469 # bin_PROGRAMS. Make sure these programs have $(EXEEXT) appended.
6470 sub append_exeext ($)
6471 {
6472 my ($macro) = @_;
6474 prog_error "append_exeext ($macro)"
6475 unless $macro =~ /_PROGRAMS$/;
6477 transform_variable_recursively
6478 ($macro, $macro, 'am__EXEEXT', 0, INTERNAL,
6479 sub {
6480 my ($subvar, $val, $cond, $full_cond) = @_;
6481 # Append $(EXEEXT) unless the user did it already, or it's a
6482 # @substitution@.
6483 $val .= '$(EXEEXT)' unless $val =~ /(?:\$\(EXEEXT\)$|^[@]\w+[@]$)/;
6484 return $val;
6485 });
6486 }
6489 # @PREFIX
6490 # &am_primary_prefixes ($PRIMARY, $CAN_DIST, @PREFIXES)
6491 # -----------------------------------------------------
6492 # Find all variable prefixes that are used for install directories. A
6493 # prefix `zar' qualifies iff:
6494 #
6495 # * `zardir' is a variable.
6496 # * `zar_PRIMARY' is a variable.
6497 #
6498 # As a side effect, it looks for misspellings. It is an error to have
6499 # a variable ending in a "reserved" suffix whose prefix is unknown, e.g.
6500 # "bin_PROGRAMS". However, unusual prefixes are allowed if a variable
6501 # of the same name (with "dir" appended) exists. For instance, if the
6502 # variable "zardir" is defined, then "zar_PROGRAMS" becomes valid.
6503 # This is to provide a little extra flexibility in those cases which
6504 # need it.
6505 sub am_primary_prefixes ($$@)
6506 {
6507 my ($primary, $can_dist, @prefixes) = @_;
6509 local $_;
6510 my %valid = map { $_ => 0 } @prefixes;
6511 $valid{'EXTRA'} = 0;
6512 foreach my $var (variables $primary)
6513 {
6514 # Automake is allowed to define variables that look like primaries
6515 # but which aren't. E.g. INSTALL_sh_DATA.
6516 # Autoconf can also define variables like INSTALL_DATA, so
6517 # ignore all configure variables (at least those which are not
6518 # redefined in Makefile.am).
6519 # FIXME: We should make sure that these variables are not
6520 # conditionally defined (or else adjust the condition below).
6521 my $def = $var->def (TRUE);
6522 next if $def && $def->owner != VAR_MAKEFILE;
6524 my $varname = $var->name;
6526 if ($varname =~ /^(nobase_)?(dist_|nodist_)?(.*)_[[:alnum:]]+$/)
6527 {
6528 my ($base, $dist, $X) = ($1 || '', $2 || '', $3 || '');
6529 if ($dist ne '' && ! $can_dist)
6530 {
6531 err_var ($var,
6532 "invalid variable `$varname': `dist' is forbidden");
6533 }
6534 # Standard directories must be explicitly allowed.
6535 elsif (! defined $valid{$X} && exists $standard_prefix{$X})
6536 {
6537 err_var ($var,
6538 "`${X}dir' is not a legitimate directory " .
6539 "for `$primary'");
6540 }
6541 # A not explicitly valid directory is allowed if Xdir is defined.
6542 elsif (! defined $valid{$X} &&
6543 $var->requires_variables ("`$varname' is used", "${X}dir"))
6544 {
6545 # Nothing to do. Any error message has been output
6546 # by $var->requires_variables.
6547 }
6548 else
6549 {
6550 # Ensure all extended prefixes are actually used.
6551 $valid{"$base$dist$X"} = 1;
6552 }
6553 }
6554 else
6555 {
6556 prog_error "unexpected variable name: $varname";
6557 }
6558 }
6560 # Return only those which are actually defined.
6561 return sort grep { var ($_ . '_' . $primary) } keys %valid;
6562 }
6565 # Handle `where_HOW' variable magic. Does all lookups, generates
6566 # install code, and possibly generates code to define the primary
6567 # variable. The first argument is the name of the .am file to munge,
6568 # the second argument is the primary variable (e.g. HEADERS), and all
6569 # subsequent arguments are possible installation locations.
6570 #
6571 # Returns list of [$location, $value] pairs, where
6572 # $value's are the values in all where_HOW variable, and $location
6573 # there associated location (the place here their parent variables were
6574 # defined).
6575 #
6576 # FIXME: this should be rewritten to be cleaner. It should be broken
6577 # up into multiple functions.
6578 #
6579 # Usage is: am_install_var (OPTION..., file, HOW, where...)
6580 sub am_install_var
6581 {
6582 my (@args) = @_;
6584 my $do_require = 1;
6585 my $can_dist = 0;
6586 my $default_dist = 0;
6587 while (@args)
6588 {
6589 if ($args[0] eq '-noextra')
6590 {
6591 $do_require = 0;
6592 }
6593 elsif ($args[0] eq '-candist')
6594 {
6595 $can_dist = 1;
6596 }
6597 elsif ($args[0] eq '-defaultdist')
6598 {
6599 $default_dist = 1;
6600 $can_dist = 1;
6601 }
6602 elsif ($args[0] !~ /^-/)
6603 {
6604 last;
6605 }
6606 shift (@args);
6607 }
6609 my ($file, $primary, @prefix) = @args;
6611 # Now that configure substitutions are allowed in where_HOW
6612 # variables, it is an error to actually define the primary. We
6613 # allow `JAVA', as it is customarily used to mean the Java
6614 # interpreter. This is but one of several Java hacks. Similarly,
6615 # `PYTHON' is customarily used to mean the Python interpreter.
6616 reject_var $primary, "`$primary' is an anachronism"
6617 unless $primary eq 'JAVA' || $primary eq 'PYTHON';
6619 # Get the prefixes which are valid and actually used.
6620 @prefix = am_primary_prefixes ($primary, $can_dist, @prefix);
6622 # If a primary includes a configure substitution, then the EXTRA_
6623 # form is required. Otherwise we can't properly do our job.
6624 my $require_extra;
6626 my @used = ();
6627 my @result = ();
6629 foreach my $X (@prefix)
6630 {
6631 my $nodir_name = $X;
6632 my $one_name = $X . '_' . $primary;
6633 my $one_var = var $one_name;
6635 my $strip_subdir = 1;
6636 # If subdir prefix should be preserved, do so.
6637 if ($nodir_name =~ /^nobase_/)
6638 {
6639 $strip_subdir = 0;
6640 $nodir_name =~ s/^nobase_//;
6641 }
6643 # If files should be distributed, do so.
6644 my $dist_p = 0;
6645 if ($can_dist)
6646 {
6647 $dist_p = (($default_dist && $nodir_name !~ /^nodist_/)
6648 || (! $default_dist && $nodir_name =~ /^dist_/));
6649 $nodir_name =~ s/^(dist|nodist)_//;
6650 }
6653 # Use the location of the currently processed variable.
6654 # We are not processing a particular condition, so pick the first
6655 # available.
6656 my $tmpcond = $one_var->conditions->one_cond;
6657 my $where = $one_var->rdef ($tmpcond)->location->clone;
6659 # Append actual contents of where_PRIMARY variable to
6660 # @result, skipping @substitutions@.
6661 foreach my $locvals ($one_var->value_as_list_recursive (location => 1))
6662 {
6663 my ($loc, $value) = @$locvals;
6664 # Skip configure substitutions.
6665 if ($value =~ /^\@.*\@$/)
6666 {
6667 if ($nodir_name eq 'EXTRA')
6668 {
6669 error ($where,
6670 "`$one_name' contains configure substitution, "
6671 . "but shouldn't");
6672 }
6673 # Check here to make sure variables defined in
6674 # configure.ac do not imply that EXTRA_PRIMARY
6675 # must be defined.
6676 elsif (! defined $configure_vars{$one_name})
6677 {
6678 $require_extra = $one_name
6679 if $do_require;
6680 }
6681 }
6682 else
6683 {
6684 push (@result, $locvals);
6685 }
6686 }
6687 # A blatant hack: we rewrite each _PROGRAMS primary to include
6688 # EXEEXT.
6689 append_exeext ($one_name)
6690 if $primary eq 'PROGRAMS';
6691 # "EXTRA" shouldn't be used when generating clean targets,
6692 # all, or install targets. We used to warn if EXTRA_FOO was
6693 # defined uselessly, but this was annoying.
6694 next
6695 if $nodir_name eq 'EXTRA';
6697 if ($nodir_name eq 'check')
6698 {
6699 push (@check, '$(' . $one_name . ')');
6700 }
6701 else
6702 {
6703 push (@used, '$(' . $one_name . ')');
6704 }
6706 # Is this to be installed?
6707 my $install_p = $nodir_name ne 'noinst' && $nodir_name ne 'check';
6709 # If so, with install-exec? (or install-data?).
6710 my $exec_p = ($nodir_name =~ /$EXEC_DIR_PATTERN/o);
6712 my $check_options_p = $install_p && !! option 'std-options';
6714 # Use the location of the currently processed variable as context.
6715 $where->push_context ("while processing `$one_name'");
6717 # The variable containing all file to distribute.
6718 my $distvar = "\$($one_name)";
6719 $distvar = shadow_unconditionally ($one_name, $where)
6720 if ($dist_p && $one_var->has_conditional_contents);
6722 # Singular form of $PRIMARY.
6723 (my $one_primary = $primary) =~ s/S$//;
6724 $output_rules .= &file_contents ($file, $where,
6725 PRIMARY => $primary,
6726 ONE_PRIMARY => $one_primary,
6727 DIR => $X,
6728 NDIR => $nodir_name,
6729 BASE => $strip_subdir,
6731 EXEC => $exec_p,
6732 INSTALL => $install_p,
6733 DIST => $dist_p,
6734 DISTVAR => $distvar,
6735 'CK-OPTS' => $check_options_p);
6736 }
6738 # The JAVA variable is used as the name of the Java interpreter.
6739 # The PYTHON variable is used as the name of the Python interpreter.
6740 if (@used && $primary ne 'JAVA' && $primary ne 'PYTHON')
6741 {
6742 # Define it.
6743 define_pretty_variable ($primary, TRUE, INTERNAL, @used);
6744 $output_vars .= "\n";
6745 }
6747 err_var ($require_extra,
6748 "`$require_extra' contains configure substitution,\n"
6749 . "but `EXTRA_$primary' not defined")
6750 if ($require_extra && ! var ('EXTRA_' . $primary));
6752 # Push here because PRIMARY might be configure time determined.
6753 push (@all, '$(' . $primary . ')')
6754 if @used && $primary ne 'JAVA' && $primary ne 'PYTHON';
6756 # Make the result unique. This lets the user use conditionals in
6757 # a natural way, but still lets us program lazily -- we don't have
6758 # to worry about handling a particular object more than once.
6759 # We will keep only one location per object.
6760 my %result = ();
6761 for my $pair (@result)
6762 {
6763 my ($loc, $val) = @$pair;
6764 $result{$val} = $loc;
6765 }
6766 my @l = sort keys %result;
6767 return map { [$result{$_}->clone, $_] } @l;
6768 }
6771 ################################################################
6773 # Each key in this hash is the name of a directory holding a
6774 # Makefile.in. These variables are local to `is_make_dir'.
6775 my %make_dirs = ();
6776 my $make_dirs_set = 0;
6778 sub is_make_dir
6779 {
6780 my ($dir) = @_;
6781 if (! $make_dirs_set)
6782 {
6783 foreach my $iter (@configure_input_files)
6784 {
6785 $make_dirs{dirname ($iter)} = 1;
6786 }
6787 # We also want to notice Makefile.in's.
6788 foreach my $iter (@other_input_files)
6789 {
6790 if ($iter =~ /Makefile\.in$/)
6791 {
6792 $make_dirs{dirname ($iter)} = 1;
6793 }
6794 }
6795 $make_dirs_set = 1;
6796 }
6797 return defined $make_dirs{$dir};
6798 }
6800 ################################################################
6802 # Find the aux dir. This should match the algorithm used by
6803 # ./configure. (See the Autoconf documentation for for
6804 # AC_CONFIG_AUX_DIR.)
6805 sub locate_aux_dir ()
6806 {
6807 if (! $config_aux_dir_set_in_configure_ac)
6808 {
6809 # The default auxiliary directory is the first
6810 # of ., .., or ../.. that contains install-sh.
6811 # Assume . if install-sh doesn't exist yet.
6812 for my $dir (qw (. .. ../..))
6813 {
6814 if (-f "$dir/install-sh")
6815 {
6816 $config_aux_dir = $dir;
6817 last;
6818 }
6819 }
6820 $config_aux_dir = '.' unless $config_aux_dir;
6821 }
6822 # Avoid unsightly '/.'s.
6823 $am_config_aux_dir =
6824 '$(top_srcdir)' . ($config_aux_dir eq '.' ? "" : "/$config_aux_dir");
6825 $am_config_aux_dir =~ s,/*$,,;
6826 }
6829 # &maybe_push_required_file ($DIR, $FILE, $FULLFILE)
6830 # --------------------------------------------------
6831 # See if we want to push this file onto dist_common. This function
6832 # encodes the rules for deciding when to do so.
6833 sub maybe_push_required_file
6834 {
6835 my ($dir, $file, $fullfile) = @_;
6837 if ($dir eq $relative_dir)
6838 {
6839 push_dist_common ($file);
6840 return 1;
6841 }
6842 elsif ($relative_dir eq '.' && ! &is_make_dir ($dir))
6843 {
6844 # If we are doing the topmost directory, and the file is in a
6845 # subdir which does not have a Makefile, then we distribute it
6846 # here.
6848 # If a required file is above the source tree, it is important
6849 # to prefix it with `$(srcdir)' so that no VPATH search is
6850 # performed. Otherwise problems occur with Make implementations
6851 # that rewrite and simplify rules whose dependencies are found in a
6852 # VPATH location. Here is an example with OSF1/Tru64 Make.
6853 #
6854 # % cat Makefile
6855 # VPATH = sub
6856 # distdir: ../a
6857 # echo ../a
6858 # % ls
6859 # Makefile a
6860 # % make
6861 # echo a
6862 # a
6863 #
6864 # Dependency `../a' was found in `sub/../a', but this make
6865 # implementation simplified it as `a'. (Note that the sub/
6866 # directory does not even exist.)
6867 #
6868 # This kind of VPATH rewriting seems hard to cancel. The
6869 # distdir.am hack against VPATH rewriting works only when no
6870 # simplification is done, i.e., for dependencies which are in
6871 # subdirectories, not in enclosing directories. Hence, in
6872 # the latter case we use a full path to make sure no VPATH
6873 # search occurs.
6874 $fullfile = '$(srcdir)/' . $fullfile
6875 if $dir =~ m,^\.\.(?:$|/),;
6877 push_dist_common ($fullfile);
6878 return 1;
6879 }
6880 return 0;
6881 }
6884 # If a file name appears as a key in this hash, then it has already
6885 # been checked for. This allows us not to report the same error more
6886 # than once.
6887 my %required_file_not_found = ();
6889 # &require_file_internal ($WHERE, $MYSTRICT, $DIRECTORY, @FILES)
6890 # --------------------------------------------------------------
6891 # Verify that the file must exist in $DIRECTORY, or install it.
6892 # $MYSTRICT is the strictness level at which this file becomes required.
6893 sub require_file_internal ($$$@)
6894 {
6895 my ($where, $mystrict, $dir, @files) = @_;
6897 foreach my $file (@files)
6898 {
6899 my $fullfile = "$dir/$file";
6900 my $found_it = 0;
6901 my $dangling_sym = 0;
6903 if (-l $fullfile && ! -f $fullfile)
6904 {
6905 $dangling_sym = 1;
6906 }
6907 elsif (-f $fullfile)
6908 {
6909 $found_it = 1;
6910 maybe_push_required_file ($dir, $file, $fullfile);
6911 }
6913 # `--force-missing' only has an effect if `--add-missing' is
6914 # specified.
6915 if ($found_it && (! $add_missing || ! $force_missing))
6916 {
6917 next;
6918 }
6919 else
6920 {
6921 # If we've already looked for it, we're done. You might
6922 # wonder why we don't do this before searching for the
6923 # file. If we do that, then something like
6924 # AC_OUTPUT(subdir/foo foo) will fail to put foo.in into
6925 # DIST_COMMON.
6926 if (! $found_it)
6927 {
6928 next if defined $required_file_not_found{$fullfile};
6929 $required_file_not_found{$fullfile} = 1;
6930 }
6932 if ($strictness >= $mystrict)
6933 {
6934 if ($dangling_sym && $add_missing)
6935 {
6936 unlink ($fullfile);
6937 }
6939 my $trailer = '';
6940 my $suppress = 0;
6942 # Only install missing files according to our desired
6943 # strictness level.
6944 my $message = "required file `$fullfile' not found";
6945 if ($add_missing)
6946 {
6947 if (-f ("$libdir/$file"))
6948 {
6949 $suppress = 1;
6951 # Install the missing file. Symlink if we
6952 # can, copy if we must. Note: delete the file
6953 # first, in case it is a dangling symlink.
6954 $message = "installing `$fullfile'";
6955 # Windows Perl will hang if we try to delete a
6956 # file that doesn't exist.
6957 unlink ($fullfile) if -f $fullfile;
6958 if ($symlink_exists && ! $copy_missing)
6959 {
6960 if (! symlink ("$libdir/$file", $fullfile))
6961 {
6962 $suppress = 0;
6963 $trailer = "; error while making link: $!";
6964 }
6965 }
6966 elsif (system ('cp', "$libdir/$file", $fullfile))
6967 {
6968 $suppress = 0;
6969 $trailer = "\n error while copying";
6970 }
6971 }
6973 if (! maybe_push_required_file (dirname ($fullfile),
6974 $file, $fullfile))
6975 {
6976 if (! $found_it && ! $automake_will_process_aux_dir)
6977 {
6978 # We have added the file but could not push it
6979 # into DIST_COMMON, probably because this is
6980 # an auxiliary file and we are not processing
6981 # the top level Makefile. Furthermore Automake
6982 # hasn't been asked to create the Makefile.in
6983 # that distribute the aux dir files.
6984 error ($where, 'Please make a full run of automake'
6985 . " so $fullfile gets distributed.");
6986 }
6987 }
6988 }
6990 # If --force-missing was specified, and we have
6991 # actually found the file, then do nothing.
6992 next
6993 if $found_it && $force_missing;
6995 # If we couldn' install the file, but it is a target in
6996 # the Makefile, don't print anything. This allows files
6997 # like README, AUTHORS, or THANKS to be generated.
6998 next
6999 if !$suppress && rule $file;
7001 msg ($suppress ? 'note' : 'error', $where, "$message$trailer");
7002 }
7003 }
7004 }
7005 }
7007 # &require_file ($WHERE, $MYSTRICT, @FILES)
7008 # -----------------------------------------
7009 sub require_file ($$@)
7010 {
7011 my ($where, $mystrict, @files) = @_;
7012 require_file_internal ($where, $mystrict, $relative_dir, @files);
7013 }
7015 # &require_file_with_macro ($COND, $MACRO, $MYSTRICT, @FILES)
7016 # -----------------------------------------------------------
7017 sub require_file_with_macro ($$$@)
7018 {
7019 my ($cond, $macro, $mystrict, @files) = @_;
7020 $macro = rvar ($macro) unless ref $macro;
7021 require_file ($macro->rdef ($cond)->location, $mystrict, @files);
7022 }
7025 # &require_conf_file ($WHERE, $MYSTRICT, @FILES)
7026 # ----------------------------------------------
7027 # Looks in configuration path, as specified by AC_CONFIG_AUX_DIR.
7028 sub require_conf_file ($$@)
7029 {
7030 my ($where, $mystrict, @files) = @_;
7031 require_file_internal ($where, $mystrict, $config_aux_dir, @files);
7032 }
7035 # &require_conf_file_with_macro ($COND, $MACRO, $MYSTRICT, @FILES)
7036 # ----------------------------------------------------------------
7037 sub require_conf_file_with_macro ($$$@)
7038 {
7039 my ($cond, $macro, $mystrict, @files) = @_;
7040 require_conf_file (rvar ($macro)->rdef ($cond)->location,
7041 $mystrict, @files);
7042 }
7044 ################################################################
7046 # &require_build_directory ($DIRECTORY)
7047 # ------------------------------------
7048 # Emit rules to create $DIRECTORY if needed, and return
7049 # the file that any target requiring this directory should be made
7050 # dependent upon.
7051 sub require_build_directory ($)
7052 {
7053 my $directory = shift;
7054 my $dirstamp = "$directory/\$(am__dirstamp)";
7056 # Don't emit the rule twice.
7057 if (! defined $directory_map{$directory})
7058 {
7059 $directory_map{$directory} = 1;
7061 # Set a variable for the dirstamp basename.
7062 define_pretty_variable ('am__dirstamp', TRUE, INTERNAL,
7063 '$(am__leading_dot)dirstamp');
7065 # Directory must be removed by `make distclean'.
7066 $clean_files{$dirstamp} = DIST_CLEAN;
7068 $output_rules .= ("$dirstamp:\n"
7069 . "\t\@\$(mkdir_p) $directory\n"
7070 . "\t\@: > $dirstamp\n");
7071 }
7073 return $dirstamp;
7074 }
7076 # &require_build_directory_maybe ($FILE)
7077 # --------------------------------------
7078 # If $FILE lies in a subdirectory, emit a rule to create this
7079 # directory and return the file that $FILE should be made
7080 # dependent upon. Otherwise, just return the empty string.
7081 sub require_build_directory_maybe ($)
7082 {
7083 my $file = shift;
7084 my $directory = dirname ($file);
7086 if ($directory ne '.')
7087 {
7088 return require_build_directory ($directory);
7089 }
7090 else
7091 {
7092 return '';
7093 }
7094 }
7096 ################################################################
7098 # Push a list of files onto dist_common.
7099 sub push_dist_common
7100 {
7101 prog_error "push_dist_common run after handle_dist"
7102 if $handle_dist_run;
7103 Automake::Variable::define ('DIST_COMMON', VAR_AUTOMAKE, '+', TRUE, "@_",
7104 '', INTERNAL, VAR_PRETTY);
7105 }
7108 ################################################################
7110 # generate_makefile ($MAKEFILE_AM, $MAKEFILE_IN)
7111 # ----------------------------------------------
7112 # Generate a Makefile.in given the name of the corresponding Makefile and
7113 # the name of the file output by config.status.
7114 sub generate_makefile ($$)
7115 {
7116 my ($makefile_am, $makefile_in) = @_;
7118 # Reset all the Makefile.am related variables.
7119 initialize_per_input;
7121 # AUTOMAKE_OPTIONS can contains -W flags to disable or enable
7122 # warnings for this file. So hold any warning issued before
7123 # we have processed AUTOMAKE_OPTIONS.
7124 buffer_messages ('warning');
7126 # Name of input file ("Makefile.am") and output file
7127 # ("Makefile.in"). These have no directory components.
7128 $am_file_name = basename ($makefile_am);
7129 $in_file_name = basename ($makefile_in);
7131 # $OUTPUT is encoded. If it contains a ":" then the first element
7132 # is the real output file, and all remaining elements are input
7133 # files. We don't scan or otherwise deal with these input files,
7134 # other than to mark them as dependencies. See
7135 # &scan_autoconf_files for details.
7136 my ($makefile, @inputs) = split (/:/, $output_files{$makefile_in});
7138 $relative_dir = dirname ($makefile);
7139 $am_relative_dir = dirname ($makefile_am);
7141 read_main_am_file ($makefile_am);
7142 if (handle_options)
7143 {
7144 # Process buffered warnings.
7145 flush_messages;
7146 # Fatal error. Just return, so we can continue with next file.
7147 return;
7148 }
7149 # Process buffered warnings.
7150 flush_messages;
7152 # There are a few install-related variables that you should not define.
7153 foreach my $var ('PRE_INSTALL', 'POST_INSTALL', 'NORMAL_INSTALL')
7154 {
7155 my $v = var $var;
7156 if ($v)
7157 {
7158 my $def = $v->def (TRUE);
7159 prog_error "$var not defined in condition TRUE"
7160 unless $def;
7161 reject_var $var, "`$var' should not be defined"
7162 if $def->owner != VAR_AUTOMAKE;
7163 }
7164 }
7166 # Catch some obsolete variables.
7167 msg_var ('obsolete', 'INCLUDES',
7168 "`INCLUDES' is the old name for `AM_CPPFLAGS' (or `*_CPPFLAGS')")
7169 if var ('INCLUDES');
7171 # Must do this after reading .am file.
7172 define_variable ('subdir', $relative_dir, INTERNAL);
7174 # If DIST_SUBDIRS is defined, make sure SUBDIRS is, so that
7175 # recursive rules are enabled.
7176 define_pretty_variable ('SUBDIRS', TRUE, INTERNAL, '')
7177 if var 'DIST_SUBDIRS' && ! var 'SUBDIRS';
7179 # Check first, because we might modify some state.
7180 check_cygnus;
7181 check_gnu_standards;
7182 check_gnits_standards;
7184 handle_configure ($makefile_am, $makefile_in, $makefile, @inputs);
7185 handle_gettext;
7186 handle_libraries;
7187 handle_ltlibraries;
7188 handle_programs;
7189 handle_scripts;
7191 # These must be run after all the sources are scanned. They
7192 # use variables defined by &handle_libraries, &handle_ltlibraries,
7193 # or &handle_programs.
7194 handle_compile;
7195 handle_languages;
7196 handle_libtool;
7198 # Variables used by distdir.am and tags.am.
7199 define_pretty_variable ('SOURCES', TRUE, INTERNAL, @sources);
7200 if (! option 'no-dist')
7201 {
7202 define_pretty_variable ('DIST_SOURCES', TRUE, INTERNAL, @dist_sources);
7203 }
7205 handle_multilib;
7206 handle_texinfo;
7207 handle_emacs_lisp;
7208 handle_python;
7209 handle_java;
7210 handle_man_pages;
7211 handle_data;
7212 handle_headers;
7213 handle_subdirs;
7214 handle_tags;
7215 handle_minor_options;
7216 handle_tests;
7218 # This must come after most other rules.
7219 handle_dist;
7221 handle_footer;
7222 do_check_merge_target;
7223 handle_all ($makefile);
7225 # FIXME: Gross!
7226 if (var ('lib_LTLIBRARIES') && var ('bin_PROGRAMS'))
7227 {
7228 $output_rules .= "install-binPROGRAMS: install-libLTLIBRARIES\n\n";
7229 }
7231 handle_install;
7232 handle_clean ($makefile);
7233 handle_factored_dependencies;
7235 # Comes last, because all the above procedures may have
7236 # defined or overridden variables.
7237 $output_vars .= output_variables;
7239 check_typos;
7241 my ($out_file) = $output_directory . '/' . $makefile_in;
7243 if ($exit_code != 0)
7244 {
7245 verb "not writing $out_file because of earlier errors";
7246 return;
7247 }
7249 if (! -d ($output_directory . '/' . $am_relative_dir))
7250 {
7251 mkdir ($output_directory . '/' . $am_relative_dir, 0755);
7252 }
7254 # We make sure that `all:' is the first target.
7255 my $output =
7256 "$output_vars$output_all$output_header$output_rules$output_trailer";
7258 # Decide whether we must update the output file or not.
7259 # We have to update in the following situations.
7260 # * $force_generation is set.
7261 # * any of the output dependencies is younger than the output
7262 # * the contents of the output is different (this can happen
7263 # if the project has been populated with a file listed in
7264 # @common_files since the last run).
7265 # Output's dependencies are split in two sets:
7266 # * dependencies which are also configure dependencies
7267 # These do not change between each Makefile.am
7268 # * other dependencies, specific to the Makefile.am being processed
7269 # (such as the Makefile.am itself, or any Makefile fragment
7270 # it includes).
7271 my $timestamp = mtime $out_file;
7272 if (! $force_generation
7273 && $configure_deps_greatest_timestamp < $timestamp
7274 && $output_deps_greatest_timestamp < $timestamp
7275 && $output eq contents ($out_file))
7276 {
7277 verb "$out_file unchanged";
7278 # No need to update.
7279 return;
7280 }
7282 if (-e $out_file)
7283 {
7284 unlink ($out_file)
7285 or fatal "cannot remove $out_file: $!\n";
7286 }
7288 my $gm_file = new Automake::XFile "> $out_file";
7289 verb "creating $out_file";
7290 print $gm_file $output;
7291 }
7293 ################################################################
7298 ################################################################
7300 # Print usage information.
7301 sub usage ()
7302 {
7303 print "Usage: $0 [OPTION] ... [Makefile]...
7305 Generate Makefile.in for configure from Makefile.am.
7307 Operation modes:
7308 --help print this help, then exit
7309 --version print version number, then exit
7310 -v, --verbose verbosely list files processed
7311 --no-force only update Makefile.in's that are out of date
7312 -W, --warnings=CATEGORY report the warnings falling in CATEGORY
7314 Dependency tracking:
7315 -i, --ignore-deps disable dependency tracking code
7316 --include-deps enable dependency tracking code
7318 Flavors:
7319 --cygnus assume program is part of Cygnus-style tree
7320 --foreign set strictness to foreign
7321 --gnits set strictness to gnits
7322 --gnu set strictness to gnu
7324 Library files:
7325 -a, --add-missing add missing standard files to package
7326 --libdir=DIR directory storing library files
7327 -c, --copy with -a, copy missing files (default is symlink)
7328 -f, --force-missing force update of standard files
7330 ";
7331 Automake::ChannelDefs::usage;
7333 my ($last, @lcomm);
7334 $last = '';
7335 foreach my $iter (sort ((@common_files, @common_sometimes)))
7336 {
7337 push (@lcomm, $iter) unless $iter eq $last;
7338 $last = $iter;
7339 }
7341 my @four;
7342 print "\nFiles which are automatically distributed, if found:\n";
7343 format USAGE_FORMAT =
7344 @<<<<<<<<<<<<<<<< @<<<<<<<<<<<<<<<< @<<<<<<<<<<<<<<<< @<<<<<<<<<<<<<<<<
7345 $four[0], $four[1], $four[2], $four[3]
7346 .
7347 $~ = "USAGE_FORMAT";
7349 my $cols = 4;
7350 my $rows = int(@lcomm / $cols);
7351 my $rest = @lcomm % $cols;
7353 if ($rest)
7354 {
7355 $rows++;
7356 }
7357 else
7358 {
7359 $rest = $cols;
7360 }
7362 for (my $y = 0; $y < $rows; $y++)
7363 {
7364 @four = ("", "", "", "");
7365 for (my $x = 0; $x < $cols; $x++)
7366 {
7367 last if $y + 1 == $rows && $x == $rest;
7369 my $idx = (($x > $rest)
7370 ? ($rows * $rest + ($rows - 1) * ($x - $rest))
7371 : ($rows * $x));
7373 $idx += $y;
7374 $four[$x] = $lcomm[$idx];
7375 }
7376 write;
7377 }
7379 print "\nReport bugs to <bug-automake\@gnu.org>.\n";
7381 # --help always returns 0 per GNU standards.
7382 exit 0;
7383 }
7386 # &version ()
7387 # -----------
7388 # Print version information
7389 sub version ()
7390 {
7391 print <<EOF;
7392 automake (GNU $PACKAGE) $VERSION
7393 Written by Tom Tromey <tromey\@redhat.com>.
7395 Copyright 2004 Free Software Foundation, Inc.
7396 This is free software; see the source for copying conditions. There is NO
7397 warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
7398 EOF
7399 # --version always returns 0 per GNU standards.
7400 exit 0;
7401 }
7403 ################################################################
7405 # Parse command line.
7406 sub parse_arguments ()
7407 {
7408 # Start off as gnu.
7409 set_strictness ('gnu');
7411 my $cli_where = new Automake::Location;
7412 my %cli_options =
7413 (
7414 'libdir:s' => \$libdir,
7415 'gnu' => sub { set_strictness ('gnu'); },
7416 'gnits' => sub { set_strictness ('gnits'); },
7417 'cygnus' => sub { set_global_option ('cygnus', $cli_where); },
7418 'foreign' => sub { set_strictness ('foreign'); },
7419 'include-deps' => sub { unset_global_option ('no-dependencies'); },
7420 'i|ignore-deps' => sub { set_global_option ('no-dependencies',
7421 $cli_where); },
7422 'no-force' => sub { $force_generation = 0; },
7423 'f|force-missing' => \$force_missing,
7424 'o|output-dir:s' => \$output_directory,
7425 'a|add-missing' => \$add_missing,
7426 'c|copy' => \$copy_missing,
7427 'v|verbose' => sub { setup_channel 'verb', silent => 0; },
7428 'W|warnings:s' => \&parse_warnings,
7429 # These long options (--Werror and --Wno-error) for backward
7430 # compatibility. Use -Werror and -Wno-error today.
7431 'Werror' => sub { parse_warnings 'W', 'error'; },
7432 'Wno-error' => sub { parse_warnings 'W', 'no-error'; },
7433 );
7434 use Getopt::Long;
7435 Getopt::Long::config ("bundling", "pass_through");
7437 # See if --version or --help is used. We want to process these before
7438 # anything else because the GNU Coding Standards require us to
7439 # `exit 0' after processing these options, and we can't guarantee this
7440 # if we treat other options first. (Handling other options first
7441 # could produce error diagnostics, and in this condition it is
7442 # confusing if Automake does `exit 0'.)
7443 my %cli_options_1st_pass =
7444 (
7445 'version' => \&version,
7446 'help' => \&usage,
7447 # Recognize all other options (and their arguments) but do nothing.
7448 map { $_ => sub {} } (keys %cli_options)
7449 );
7450 my @ARGV_backup = @ARGV;
7451 Getopt::Long::GetOptions %cli_options_1st_pass
7452 or exit 1;
7453 @ARGV = @ARGV_backup;
7455 # Now *really* process the options. This time we know
7456 # that --help and --version are not present.
7457 Getopt::Long::GetOptions %cli_options
7458 or exit 1;
7460 if (defined $output_directory)
7461 {
7462 msg 'obsolete', "`--output-dir' is deprecated\n";
7463 }
7464 else
7465 {
7466 # In the next release we'll remove this entirely.
7467 $output_directory = '.';
7468 }
7470 my $errspec = 0;
7471 foreach my $arg (@ARGV)
7472 {
7473 if ($arg =~ /^-./)
7474 {
7475 fatal ("unrecognized option `$arg'\n"
7476 . "Try `$0 --help' for more information.");
7477 }
7479 # Handle $local:$input syntax.
7480 my ($local, @rest) = split (/:/, $arg);
7481 @rest = ("$local.in",) unless @rest;
7482 my $input = locate_am @rest;
7483 if ($input)
7484 {
7485 push @input_files, $input;
7486 $output_files{$input} = join (':', ($local, @rest));
7487 }
7488 else
7489 {
7490 error "no Automake input file found for `$arg'";
7491 $errspec = 1;
7492 }
7493 }
7494 fatal "no input file found among supplied arguments"
7495 if $errspec && ! @input_files;
7496 }
7498 ################################################################
7500 # Parse the WARNINGS environment variable.
7501 parse_WARNINGS;
7503 # Parse command line.
7504 parse_arguments;
7506 $configure_ac = require_configure_ac;
7508 # Do configure.ac scan only once.
7509 scan_autoconf_files;
7511 if (! @input_files)
7512 {
7513 my $msg = '';
7514 $msg = "\nDid you forget AC_CONFIG_FILES([Makefile]) in $configure_ac?"
7515 if -f 'Makefile.am';
7516 fatal ("no `Makefile.am' found for any configure output$msg");
7517 }
7519 # Now do all the work on each file.
7520 foreach my $file (@input_files)
7521 {
7522 ($am_file = $file) =~ s/\.in$//;
7523 if (! -f ($am_file . '.am'))
7524 {
7525 error "`$am_file.am' does not exist";
7526 }
7527 else
7528 {
7529 # Any warning setting now local to this Makefile.am.
7530 dup_channel_setup;
7532 generate_makefile ($am_file . '.am', $file);
7534 # Back out any warning setting.
7535 drop_channel_setup;
7536 }
7537 }
7539 exit $exit_code;
7542 ### Setup "GNU" style for perl-mode and cperl-mode.
7543 ## Local Variables:
7544 ## perl-indent-level: 2
7545 ## perl-continued-statement-offset: 2
7546 ## perl-continued-brace-offset: 0
7547 ## perl-brace-offset: 0
7548 ## perl-brace-imaginary-offset: 0
7549 ## perl-label-offset: -2
7550 ## cperl-indent-level: 2
7551 ## cperl-brace-offset: 0
7552 ## cperl-continued-brace-offset: 0
7553 ## cperl-label-offset: -2
7554 ## cperl-extra-newline-before-brace: t
7555 ## cperl-merge-trailing-else: nil
7556 ## cperl-continued-statement-offset: 2
7557 ## End: