| blob | 9e2a98687f06f21df1752c39346a24b9fee83532 |
1 #!@PERL@ -w
2 # -*- perl -*-
3 # @configure_input@
5 eval 'case $# in 0) exec @PERL@ -S "$0";; *) exec @PERL@ -S "$0" "$@";; esac'
6 if 0;
8 # automake - create Makefile.in from Makefile.am
9 # Copyright (C) 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002,
10 # 2003, 2004, 2005 Free Software Foundation, Inc.
12 # This program is free software; you can redistribute it and/or modify
13 # it under the terms of the GNU General Public License as published by
14 # the Free Software Foundation; either version 2, or (at your option)
15 # any later version.
17 # This program is distributed in the hope that it will be useful,
18 # but WITHOUT ANY WARRANTY; without even the implied warranty of
19 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
20 # GNU General Public License for more details.
22 # You should have received a copy of the GNU General Public License
23 # along with this program; if not, write to the Free Software
24 # Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
25 # 02111-1307, USA.
27 # Originally written by David Mackenzie <djm@gnu.ai.mit.edu>.
28 # Perl reimplementation by Tom Tromey <tromey@redhat.com>, and
29 # Alexandre Duret-Lutz <adl@gnu.org>.
31 package Language;
33 BEGIN
34 {
35 my $perllibdir = $ENV{'perllibdir'} || '@datadir@/@PACKAGE@-@APIVERSION@';
36 unshift @INC, (split '@PATH_SEPARATOR@', $perllibdir);
38 # Override SHELL. This is required on DJGPP so that system() uses
39 # bash, not COMMAND.COM which doesn't quote arguments properly.
40 # Other systems aren't expected to use $SHELL when Automake
41 # runs, but it should be safe to drop the `if DJGPP' guard if
42 # it turns up other systems need the same thing. After all,
43 # if SHELL is used, ./configure's SHELL is always better than
44 # the user's SHELL (which may be something like tcsh).
45 $ENV{'SHELL'} = '@SHELL@' if exists $ENV{'DJGPP'};
46 }
48 use Automake::Struct;
49 struct (# Short name of the language (c, f77...).
50 'name' => "\$",
51 # Nice name of the language (C, Fortran 77...).
52 'Name' => "\$",
54 # List of configure variables which must be defined.
55 'config_vars' => '@',
57 'ansi' => "\$",
58 # `pure' is `1' or `'. A `pure' language is one where, if
59 # all the files in a directory are of that language, then we
60 # do not require the C compiler or any code to call it.
61 'pure' => "\$",
63 'autodep' => "\$",
65 # Name of the compiling variable (COMPILE).
66 'compiler' => "\$",
67 # Content of the compiling variable.
68 'compile' => "\$",
69 # Flag to require compilation without linking (-c).
70 'compile_flag' => "\$",
71 'extensions' => '@',
72 # A subroutine to compute a list of possible extensions of
73 # the product given the input extensions.
74 # (defaults to a subroutine which returns ('.$(OBJEXT)', '.lo'))
75 'output_extensions' => "\$",
76 # A list of flag variables used in 'compile'.
77 # (defaults to [])
78 'flags' => "@",
80 # Any tag to pass to libtool while compiling.
81 'libtool_tag' => "\$",
83 # The file to use when generating rules for this language.
84 # The default is 'depend2'.
85 'rule_file' => "\$",
87 # Name of the linking variable (LINK).
88 'linker' => "\$",
89 # Content of the linking variable.
90 'link' => "\$",
92 # Name of the linker variable (LD).
93 'lder' => "\$",
94 # Content of the linker variable ($(CC)).
95 'ld' => "\$",
97 # Flag to specify the output file (-o).
98 'output_flag' => "\$",
99 '_finish' => "\$",
101 # This is a subroutine which is called whenever we finally
102 # determine the context in which a source file will be
103 # compiled.
104 '_target_hook' => "\$",
106 # If TRUE, nodist_ sources will be compiled using specific rules
107 # (i.e. not inference rules). The default is FALSE.
108 'nodist_specific' => "\$");
111 sub finish ($)
112 {
113 my ($self) = @_;
114 if (defined $self->_finish)
115 {
116 &{$self->_finish} ();
117 }
118 }
120 sub target_hook ($$$$%)
121 {
122 my ($self) = @_;
123 if (defined $self->_target_hook)
124 {
125 &{$self->_target_hook} (@_);
126 }
127 }
129 package Automake;
131 use strict;
132 use Automake::Config;
133 use Automake::General;
134 use Automake::XFile;
135 use Automake::Channels;
136 use Automake::ChannelDefs;
137 use Automake::Configure_ac;
138 use Automake::FileUtils;
139 use Automake::Location;
140 use Automake::Condition qw/TRUE FALSE/;
141 use Automake::DisjConditions;
142 use Automake::Options;
143 use Automake::Version;
144 use Automake::Variable;
145 use Automake::VarDef;
146 use Automake::Rule;
147 use Automake::RuleDef;
148 use Automake::Wrap 'makefile_wrap';
149 use File::Basename;
150 use Carp;
152 ## ----------- ##
153 ## Constants. ##
154 ## ----------- ##
156 # Some regular expressions. One reason to put them here is that it
157 # makes indentation work better in Emacs.
159 # Writing singled-quoted-$-terminated regexes is a pain because
160 # perl-mode thinks of $' as the ${'} variable (instead of a $ followed
161 # by a closing quote. Letting perl-mode think the quote is not closed
162 # leads to all sort of misindentations. On the other hand, defining
163 # regexes as double-quoted strings is far less readable. So usually
164 # we will write:
165 #
166 # $REGEX = '^regex_value' . "\$";
168 my $IGNORE_PATTERN = '^\s*##([^#\n].*)?\n';
169 my $WHITE_PATTERN = '^\s*' . "\$";
170 my $COMMENT_PATTERN = '^#';
171 my $TARGET_PATTERN='[$a-zA-Z_.@%][-.a-zA-Z0-9_(){}/$+@%]*';
172 # A rule has three parts: a list of targets, a list of dependencies,
173 # and optionally actions.
174 my $RULE_PATTERN =
175 "^($TARGET_PATTERN(?:(?:\\\\\n|\\s)+$TARGET_PATTERN)*) *:([^=].*|)\$";
177 # Only recognize leading spaces, not leading tabs. If we recognize
178 # leading tabs here then we need to make the reader smarter, because
179 # otherwise it will think rules like `foo=bar; \' are errors.
180 my $ASSIGNMENT_PATTERN = '^ *([^ \t=:+]*)\s*([:+]?)=\s*(.*)' . "\$";
181 # This pattern recognizes a Gnits version id and sets $1 if the
182 # release is an alpha release. We also allow a suffix which can be
183 # used to extend the version number with a "fork" identifier.
184 my $GNITS_VERSION_PATTERN = '\d+\.\d+([a-z]|\.\d+)?(-[A-Za-z0-9]+)?';
186 my $IF_PATTERN = '^if\s+(!?)\s*([A-Za-z][A-Za-z0-9_]*)\s*(?:#.*)?' . "\$";
187 my $ELSE_PATTERN =
188 '^else(?:\s+(!?)\s*([A-Za-z][A-Za-z0-9_]*))?\s*(?:#.*)?' . "\$";
189 my $ENDIF_PATTERN =
190 '^endif(?:\s+(!?)\s*([A-Za-z][A-Za-z0-9_]*))?\s*(?:#.*)?' . "\$";
191 my $PATH_PATTERN = '(\w|[+/.-])+';
192 # This will pass through anything not of the prescribed form.
193 my $INCLUDE_PATTERN = ('^include\s+'
194 . '((\$\(top_srcdir\)/' . $PATH_PATTERN . ')'
195 . '|(\$\(srcdir\)/' . $PATH_PATTERN . ')'
196 . '|([^/\$]' . $PATH_PATTERN . '))\s*(#.*)?' . "\$");
198 # Match `-d' as a command-line argument in a string.
199 my $DASH_D_PATTERN = "(^|\\s)-d(\\s|\$)";
200 # Directories installed during 'install-exec' phase.
201 my $EXEC_DIR_PATTERN =
202 '^(?:bin|sbin|libexec|sysconf|localstate|lib|pkglib|.*exec.*)' . "\$";
204 # Values for AC_CANONICAL_*
205 use constant AC_CANONICAL_BUILD => 1;
206 use constant AC_CANONICAL_HOST => 2;
207 use constant AC_CANONICAL_TARGET => 3;
209 # Values indicating when something should be cleaned.
210 use constant MOSTLY_CLEAN => 0;
211 use constant CLEAN => 1;
212 use constant DIST_CLEAN => 2;
213 use constant MAINTAINER_CLEAN => 3;
215 # Libtool files.
216 my @libtool_files = qw(ltmain.sh config.guess config.sub);
217 # ltconfig appears here for compatibility with old versions of libtool.
218 my @libtool_sometimes = qw(ltconfig ltcf-c.sh ltcf-cxx.sh ltcf-gcj.sh);
220 # Commonly found files we look for and automatically include in
221 # DISTFILES.
222 my @common_files =
223 (qw(ABOUT-GNU ABOUT-NLS AUTHORS BACKLOG COPYING COPYING.DOC COPYING.LIB
224 COPYING.LESSER ChangeLog INSTALL NEWS README THANKS TODO
225 ansi2knr.1 ansi2knr.c compile config.guess config.rpath config.sub
226 depcomp elisp-comp install-sh libversion.in mdate-sh missing
227 mkinstalldirs py-compile texinfo.tex ylwrap),
228 @libtool_files, @libtool_sometimes);
230 # Commonly used files we auto-include, but only sometimes. This list
231 # is used for the --help output only.
232 my @common_sometimes =
233 qw(aclocal.m4 acconfig.h config.h.top config.h.bot configure
234 configure.ac configure.in stamp-vti);
236 # Standard directories from the GNU Coding Standards, and additional
237 # pkg* directories from Automake. Stored in a hash for fast member check.
238 my %standard_prefix =
239 map { $_ => 1 } (qw(bin data dataroot dvi exec html include info
240 lib libexec lisp localstate man man1 man2 man3
241 man4 man5 man6 man7 man8 man9 oldinclude pdf
242 pkgdatadir pkgincludedir pkglibdir ps sbin
243 sharedstate sysconf));
245 # Copyright on generated Makefile.ins.
246 my $gen_copyright = "\
247 # Copyright (C) 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002,
248 # 2003, 2004, 2005 Free Software Foundation, Inc.
249 # This Makefile.in is free software; the Free Software Foundation
250 # gives unlimited permission to copy and/or distribute it,
251 # with or without modifications, as long as this notice is preserved.
253 # This program is distributed in the hope that it will be useful,
254 # but WITHOUT ANY WARRANTY, to the extent permitted by law; without
255 # even the implied warranty of MERCHANTABILITY or FITNESS FOR A
256 # PARTICULAR PURPOSE.
257 ";
259 # These constants are returned by lang_*_rewrite functions.
260 # LANG_SUBDIR means that the resulting object file should be in a
261 # subdir if the source file is. In this case the file name cannot
262 # have `..' components.
263 use constant LANG_IGNORE => 0;
264 use constant LANG_PROCESS => 1;
265 use constant LANG_SUBDIR => 2;
267 # These are used when keeping track of whether an object can be built
268 # by two different paths.
269 use constant COMPILE_LIBTOOL => 1;
270 use constant COMPILE_ORDINARY => 2;
272 # We can't always associate a location to a variable or a rule,
273 # when its defined by Automake. We use INTERNAL in this case.
274 use constant INTERNAL => new Automake::Location;
275 \f
277 ## ---------------------------------- ##
278 ## Variables related to the options. ##
279 ## ---------------------------------- ##
281 # TRUE if we should always generate Makefile.in.
282 my $force_generation = 1;
284 # From the Perl manual.
285 my $symlink_exists = (eval 'symlink ("", "");', $@ eq '');
287 # TRUE if missing standard files should be installed.
288 my $add_missing = 0;
290 # TRUE if we should copy missing files; otherwise symlink if possible.
291 my $copy_missing = 0;
293 # TRUE if we should always update files that we know about.
294 my $force_missing = 0;
297 ## ---------------------------------------- ##
298 ## Variables filled during files scanning. ##
299 ## ---------------------------------------- ##
301 # Name of the configure.ac file.
302 my $configure_ac;
304 # Files found by scanning configure.ac for LIBOBJS.
305 my %libsources = ();
307 # Names used in AC_CONFIG_HEADER call.
308 my @config_headers = ();
310 # Names used in AC_CONFIG_LINKS call.
311 my @config_links = ();
313 # Directory where output files go. Actually, output files are
314 # relative to this directory.
315 my $output_directory;
317 # List of Makefile.am's to process, and their corresponding outputs.
318 my @input_files = ();
319 my %output_files = ();
321 # Complete list of Makefile.am's that exist.
322 my @configure_input_files = ();
324 # List of files in AC_CONFIG_FILES/AC_OUTPUT without Makefile.am's,
325 # and their outputs.
326 my @other_input_files = ();
327 # Where each AC_CONFIG_FILES/AC_OUTPUT/AC_CONFIG_LINK/AC_CONFIG_HEADER appears.
328 # The keys are the files created by these macros.
329 my %ac_config_files_location = ();
331 # Directory to search for configure-required files. This
332 # will be computed by &locate_aux_dir and can be set using
333 # AC_CONFIG_AUX_DIR in configure.ac.
334 # $CONFIG_AUX_DIR is the `raw' directory, valid only in the source-tree.
335 my $config_aux_dir = '';
336 my $config_aux_dir_set_in_configure_ac = 0;
337 # $AM_CONFIG_AUX_DIR is prefixed with $(top_srcdir), so it can be used
338 # in Makefiles.
339 my $am_config_aux_dir = '';
341 # Whether AM_GNU_GETTEXT has been seen in configure.ac.
342 my $seen_gettext = 0;
343 # Whether AM_GNU_GETTEXT([external]) is used.
344 my $seen_gettext_external = 0;
345 # Where AM_GNU_GETTEXT appears.
346 my $ac_gettext_location;
348 # Lists of tags supported by Libtool.
349 my %libtool_tags = ();
350 # 1 if Libtool uses LT_SUPPORTED_TAG. If it does, then it also
351 # use AC_REQUIRE_AUX_FILE.
352 my $libtool_new_api = 0;
354 # Most important AC_CANONICAL_* macro seen so far.
355 my $seen_canonical = 0;
356 # Location of that macro.
357 my $canonical_location;
359 # Where AM_MAINTAINER_MODE appears.
360 my $seen_maint_mode;
362 # Actual version we've seen.
363 my $package_version = '';
365 # Where version is defined.
366 my $package_version_location;
368 # TRUE if we've seen AC_ENABLE_MULTILIB.
369 my $seen_multilib = 0;
371 # TRUE if we've seen AM_PROG_CC_C_O
372 my $seen_cc_c_o = 0;
374 # Location of AC_REQUIRE_AUX_FILE calls, indexed by their argument.
375 my %required_aux_file = ();
377 # Where AM_INIT_AUTOMAKE is called;
378 my $seen_init_automake = 0;
380 # TRUE if we've seen AM_AUTOMAKE_VERSION.
381 my $seen_automake_version = 0;
383 # Hash table of discovered configure substitutions. Keys are names,
384 # values are `FILE:LINE' strings which are used by error message
385 # generation.
386 my %configure_vars = ();
388 # Files included by $configure_ac.
389 my @configure_deps = ();
391 # Greatest timestamp of configure's dependencies.
392 my $configure_deps_greatest_timestamp = 0;
394 # Hash table of AM_CONDITIONAL variables seen in configure.
395 my %configure_cond = ();
397 # This maps extensions onto language names.
398 my %extension_map = ();
400 # List of the DIST_COMMON files we discovered while reading
401 # configure.in
402 my $configure_dist_common = '';
404 # This maps languages names onto objects.
405 my %languages = ();
406 # Maps each linker variable onto a language object.
407 my %link_languages = ();
409 # List of targets we must always output.
410 # FIXME: Complete, and remove falsely required targets.
411 my %required_targets =
412 (
413 'all' => 1,
414 'dvi' => 1,
415 'pdf' => 1,
416 'ps' => 1,
417 'info' => 1,
418 'install-info' => 1,
419 'install' => 1,
420 'install-data' => 1,
421 'install-exec' => 1,
422 'uninstall' => 1,
424 # FIXME: Not required, temporary hacks.
425 # Well, actually they are sort of required: the -recursive
426 # targets will run them anyway...
427 'dvi-am' => 1,
428 'pdf-am' => 1,
429 'ps-am' => 1,
430 'info-am' => 1,
431 'install-data-am' => 1,
432 'install-exec-am' => 1,
433 'installcheck-am' => 1,
434 'uninstall-am' => 1,
436 'install-man' => 1,
437 );
439 # Set to 1 if this run will create the Makefile.in that distribute
440 # the files in config_aux_dir.
441 my $automake_will_process_aux_dir = 0;
443 # The name of the Makefile currently being processed.
444 my $am_file = 'BUG';
445 \f
447 ################################################################
449 ## ------------------------------------------ ##
450 ## Variables reset by &initialize_per_input. ##
451 ## ------------------------------------------ ##
453 # Basename and relative dir of the input file.
454 my $am_file_name;
455 my $am_relative_dir;
457 # Same but wrt Makefile.in.
458 my $in_file_name;
459 my $relative_dir;
461 # Greatest timestamp of the output's dependencies (excluding
462 # configure's dependencies).
463 my $output_deps_greatest_timestamp;
465 # These two variables are used when generating each Makefile.in.
466 # They hold the Makefile.in until it is ready to be printed.
467 my $output_rules;
468 my $output_vars;
469 my $output_trailer;
470 my $output_all;
471 my $output_header;
473 # This is the conditional stack, updated on if/else/endif, and
474 # used to build Condition objects.
475 my @cond_stack;
477 # This holds the set of included files.
478 my @include_stack;
480 # This holds a list of directories which we must create at `dist'
481 # time. This is used in some strange scenarios involving weird
482 # AC_OUTPUT commands.
483 my %dist_dirs;
485 # List of dependencies for the obvious targets.
486 my @all;
487 my @check;
488 my @check_tests;
490 # Keys in this hash table are files to delete. The associated
491 # value tells when this should happen (MOSTLY_CLEAN, DIST_CLEAN, etc.)
492 my %clean_files;
494 # Keys in this hash table are object files or other files in
495 # subdirectories which need to be removed. This only holds files
496 # which are created by compilations. The value in the hash indicates
497 # when the file should be removed.
498 my %compile_clean_files;
500 # Keys in this hash table are directories where we expect to build a
501 # libtool object. We use this information to decide what directories
502 # to delete.
503 my %libtool_clean_directories;
505 # Value of `$(SOURCES)', used by tags.am.
506 my @sources;
507 # Sources which go in the distribution.
508 my @dist_sources;
510 # This hash maps object file names onto their corresponding source
511 # file names. This is used to ensure that each object is created
512 # by a single source file.
513 my %object_map;
515 # This hash maps object file names onto an integer value representing
516 # whether this object has been built via ordinary compilation or
517 # libtool compilation (the COMPILE_* constants).
518 my %object_compilation_map;
521 # This keeps track of the directories for which we've already
522 # created dirstamp code.
523 my %directory_map;
525 # All .P files.
526 my %dep_files;
528 # This is a list of all targets to run during "make dist".
529 my @dist_targets;
531 # Keys in this hash are the basenames of files which must depend on
532 # ansi2knr. Values are either the empty string, or the directory in
533 # which the ANSI source file appears; the directory must have a
534 # trailing `/'.
535 my %de_ansi_files;
537 # This is the name of the redirect `all' target to use.
538 my $all_target;
540 # This keeps track of which extensions we've seen (that we care
541 # about).
542 my %extension_seen;
544 # This is random scratch space for the language finish functions.
545 # Don't randomly overwrite it; examine other uses of keys first.
546 my %language_scratch;
548 # We keep track of which objects need special (per-executable)
549 # handling on a per-language basis.
550 my %lang_specific_files;
552 # This is set when `handle_dist' has finished. Once this happens,
553 # we should no longer push on dist_common.
554 my $handle_dist_run;
556 # Used to store a set of linkers needed to generate the sources currently
557 # under consideration.
558 my %linkers_used;
560 # True if we need `LINK' defined. This is a hack.
561 my $need_link;
563 # Was get_object_extension run?
564 # FIXME: This is a hack. a better switch should be found.
565 my $get_object_extension_was_run;
567 # Record each file processed by make_paragraphs.
568 my %transformed_files;
570 # Cache each file processed by make_paragraphs.
571 # (This is different from %transformed_files because
572 # %transformed_files is reset for each file while %am_file_cache
573 # it global to the run.)
574 my %am_file_cache;
576 ################################################################
578 # var_SUFFIXES_trigger ($TYPE, $VALUE)
579 # ------------------------------------
580 # This is called by Automake::Variable::define() when SUFFIXES
581 # is defined ($TYPE eq '') or appended ($TYPE eq '+').
582 # The work here needs to be performed as a side-effect of the
583 # macro_define() call because SUFFIXES definitions impact
584 # on $KNOWN_EXTENSIONS_PATTERN which is used used when parsing
585 # the input am file.
586 sub var_SUFFIXES_trigger ($$)
587 {
588 my ($type, $value) = @_;
589 accept_extensions (split (' ', $value));
590 }
591 Automake::Variable::hook ('SUFFIXES', \&var_SUFFIXES_trigger);
593 ################################################################
595 ## --------------------------------- ##
596 ## Forward subroutine declarations. ##
597 ## --------------------------------- ##
598 sub register_language (%);
599 sub file_contents_internal ($$$%);
600 sub define_files_variable ($\@$$);
603 # &initialize_per_input ()
604 # ------------------------
605 # (Re)-Initialize per-Makefile.am variables.
606 sub initialize_per_input ()
607 {
608 reset_local_duplicates ();
610 $am_file_name = '';
611 $am_relative_dir = '';
613 $in_file_name = '';
614 $relative_dir = '';
616 $output_deps_greatest_timestamp = 0;
618 $output_rules = '';
619 $output_vars = '';
620 $output_trailer = '';
621 $output_all = '';
622 $output_header = '';
624 Automake::Options::reset;
625 Automake::Variable::reset;
626 Automake::Rule::reset;
628 @cond_stack = ();
630 @include_stack = ();
632 %dist_dirs = ();
634 @all = ();
635 @check = ();
636 @check_tests = ();
638 %clean_files = ();
640 @sources = ();
641 @dist_sources = ();
643 %object_map = ();
644 %object_compilation_map = ();
646 %directory_map = ();
648 %dep_files = ();
650 @dist_targets = ();
652 %de_ansi_files = ();
654 $all_target = '';
656 %extension_seen = ();
658 %language_scratch = ();
660 %lang_specific_files = ();
662 $handle_dist_run = 0;
664 $need_link = 0;
666 $get_object_extension_was_run = 0;
668 %compile_clean_files = ();
670 # We always include `.'. This isn't strictly correct.
671 %libtool_clean_directories = ('.' => 1);
673 %transformed_files = ();
674 }
677 ################################################################
679 # Initialize our list of languages that are internally supported.
681 # C.
682 register_language ('name' => 'c',
683 'Name' => 'C',
684 'config_vars' => ['CC'],
685 'ansi' => 1,
686 'autodep' => '',
687 'flags' => ['CFLAGS', 'CPPFLAGS'],
688 'compiler' => 'COMPILE',
689 'compile' => '$(CC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS) $(CPPFLAGS) $(AM_CFLAGS) $(CFLAGS)',
690 'lder' => 'CCLD',
691 'ld' => '$(CC)',
692 'linker' => 'LINK',
693 'link' => '$(CCLD) $(AM_CFLAGS) $(CFLAGS) $(AM_LDFLAGS) $(LDFLAGS) -o $@',
694 'compile_flag' => '-c',
695 'libtool_tag' => 'CC',
696 'extensions' => ['.c'],
697 '_finish' => \&lang_c_finish);
699 # C++.
700 register_language ('name' => 'cxx',
701 'Name' => 'C++',
702 'config_vars' => ['CXX'],
703 'linker' => 'CXXLINK',
704 'link' => '$(CXXLD) $(AM_CXXFLAGS) $(CXXFLAGS) $(AM_LDFLAGS) $(LDFLAGS) -o $@',
705 'autodep' => 'CXX',
706 'flags' => ['CXXFLAGS', 'CPPFLAGS'],
707 'compile' => '$(CXX) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS) $(CPPFLAGS) $(AM_CXXFLAGS) $(CXXFLAGS)',
708 'compiler' => 'CXXCOMPILE',
709 'compile_flag' => '-c',
710 'output_flag' => '-o',
711 'libtool_tag' => 'CXX',
712 'lder' => 'CXXLD',
713 'ld' => '$(CXX)',
714 'pure' => 1,
715 'extensions' => ['.c++', '.cc', '.cpp', '.cxx', '.C']);
717 # Objective C.
718 register_language ('name' => 'objc',
719 'Name' => 'Objective C',
720 'config_vars' => ['OBJC'],
721 'linker' => 'OBJCLINK',,
722 'link' => '$(OBJCLD) $(AM_OBJCFLAGS) $(OBJCFLAGS) $(AM_LDFLAGS) $(LDFLAGS) -o $@',
723 'autodep' => 'OBJC',
724 'flags' => ['OBJCFLAGS', 'CPPFLAGS'],
725 'compile' => '$(OBJC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS) $(CPPFLAGS) $(AM_OBJCFLAGS) $(OBJCFLAGS)',
726 'compiler' => 'OBJCCOMPILE',
727 'compile_flag' => '-c',
728 'output_flag' => '-o',
729 'lder' => 'OBJCLD',
730 'ld' => '$(OBJC)',
731 'pure' => 1,
732 'extensions' => ['.m']);
734 # Headers.
735 register_language ('name' => 'header',
736 'Name' => 'Header',
737 'extensions' => ['.h', '.H', '.hxx', '.h++', '.hh',
738 '.hpp', '.inc'],
739 # No output.
740 'output_extensions' => sub { return () },
741 # Nothing to do.
742 '_finish' => sub { });
744 # Yacc (C & C++).
745 register_language ('name' => 'yacc',
746 'Name' => 'Yacc',
747 'config_vars' => ['YACC'],
748 'flags' => ['YFLAGS'],
749 'compile' => '$(YACC) $(YFLAGS) $(AM_YFLAGS)',
750 'compiler' => 'YACCCOMPILE',
751 'extensions' => ['.y'],
752 'output_extensions' => sub { (my $ext = $_[0]) =~ tr/y/c/;
753 return ($ext,) },
754 'rule_file' => 'yacc',
755 '_finish' => \&lang_yacc_finish,
756 '_target_hook' => \&lang_yacc_target_hook,
757 'nodist_specific' => 1);
758 register_language ('name' => 'yaccxx',
759 'Name' => 'Yacc (C++)',
760 'config_vars' => ['YACC'],
761 'rule_file' => 'yacc',
762 'flags' => ['YFLAGS'],
763 'compiler' => 'YACCCOMPILE',
764 'compile' => '$(YACC) $(YFLAGS) $(AM_YFLAGS)',
765 'extensions' => ['.y++', '.yy', '.yxx', '.ypp'],
766 'output_extensions' => sub { (my $ext = $_[0]) =~ tr/y/c/;
767 return ($ext,) },
768 '_finish' => \&lang_yacc_finish,
769 '_target_hook' => \&lang_yacc_target_hook,
770 'nodist_specific' => 1);
772 # Lex (C & C++).
773 register_language ('name' => 'lex',
774 'Name' => 'Lex',
775 'config_vars' => ['LEX'],
776 'rule_file' => 'lex',
777 'flags' => ['LFLAGS'],
778 'compile' => '$(LEX) $(LFLAGS) $(AM_LFLAGS)',
779 'compiler' => 'LEXCOMPILE',
780 'extensions' => ['.l'],
781 'output_extensions' => sub { (my $ext = $_[0]) =~ tr/l/c/;
782 return ($ext,) },
783 '_finish' => \&lang_lex_finish,
784 '_target_hook' => \&lang_lex_target_hook,
785 'nodist_specific' => 1);
786 register_language ('name' => 'lexxx',
787 'Name' => 'Lex (C++)',
788 'config_vars' => ['LEX'],
789 'rule_file' => 'lex',
790 'flags' => ['LFLAGS'],
791 'compile' => '$(LEX) $(LFLAGS) $(AM_LFLAGS)',
792 'compiler' => 'LEXCOMPILE',
793 'extensions' => ['.l++', '.ll', '.lxx', '.lpp'],
794 'output_extensions' => sub { (my $ext = $_[0]) =~ tr/l/c/;
795 return ($ext,) },
796 '_finish' => \&lang_lex_finish,
797 '_target_hook' => \&lang_lex_target_hook,
798 'nodist_specific' => 1);
800 # Assembler.
801 register_language ('name' => 'asm',
802 'Name' => 'Assembler',
803 'config_vars' => ['CCAS', 'CCASFLAGS'],
805 'flags' => ['CCASFLAGS'],
806 # Users can set AM_CCASFLAGS to include DEFS, INCLUDES,
807 # or anything else required. They can also set CCAS.
808 'compile' => '$(CCAS) $(AM_CCASFLAGS) $(CCASFLAGS)',
809 'compiler' => 'CCASCOMPILE',
810 'compile_flag' => '-c',
811 'extensions' => ['.s'],
813 # With assembly we still use the C linker.
814 '_finish' => \&lang_c_finish);
816 # Preprocessed Assembler.
817 register_language ('name' => 'cppasm',
818 'Name' => 'Preprocessed Assembler',
819 'config_vars' => ['CCAS', 'CCASFLAGS'],
821 'autodep' => 'CCAS',
822 'flags' => ['CCASFLAGS', 'CPPFLAGS'],
823 # Users can set AM_ASFLAGS to include DEFS, INCLUDES,
824 # or anything else required. They can also set CCAS.
825 'compile' => '$(CCAS) $(AM_CPPFLAGS) $(CPPFLAGS) $(AM_CCASFLAGS) $(CCASFLAGS)',
826 'compiler' => 'CPPASCOMPILE',
827 'compile_flag' => '-c',
828 'extensions' => ['.S'],
830 # With assembly we still use the C linker.
831 '_finish' => \&lang_c_finish);
833 # Fortran 77
834 register_language ('name' => 'f77',
835 'Name' => 'Fortran 77',
836 'linker' => 'F77LINK',
837 'link' => '$(F77LD) $(AM_FFLAGS) $(FFLAGS) $(AM_LDFLAGS) $(LDFLAGS) -o $@',
838 'flags' => ['FFLAGS'],
839 'compile' => '$(F77) $(AM_FFLAGS) $(FFLAGS)',
840 'compiler' => 'F77COMPILE',
841 'compile_flag' => '-c',
842 'output_flag' => '-o',
843 'libtool_tag' => 'F77',
844 'lder' => 'F77LD',
845 'ld' => '$(F77)',
846 'pure' => 1,
847 'extensions' => ['.f', '.for']);
849 # Fortran
850 register_language ('name' => 'fc',
851 'Name' => 'Fortran',
852 'linker' => 'FCLINK',
853 'link' => '$(FCLD) $(AM_FCFLAGS) $(FCFLAGS) $(AM_LDFLAGS) $(LDFLAGS) -o $@',
854 'flags' => ['FCFLAGS'],
855 'compile' => '$(FC) $(AM_FCFLAGS) $(FCFLAGS)',
856 'compiler' => 'FCCOMPILE',
857 'compile_flag' => '-c',
858 'output_flag' => '-o',
859 'lder' => 'FCLD',
860 'ld' => '$(FC)',
861 'pure' => 1,
862 'extensions' => ['.f90', '.f95']);
864 # Preprocessed Fortran
865 register_language ('name' => 'ppfc',
866 'Name' => 'Preprocessed Fortran',
867 'config_vars' => ['FC'],
868 'linker' => 'FCLINK',
869 'link' => '$(FCLD) $(AM_FCFLAGS) $(FCFLAGS) $(AM_LDFLAGS) $(LDFLAGS) -o $@',
870 'lder' => 'FCLD',
871 'ld' => '$(FC)',
872 'flags' => ['FCFLAGS', 'CPPFLAGS'],
873 'compiler' => 'PPFCCOMPILE',
874 'compile' => '$(FC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS) $(CPPFLAGS) $(AM_FCFLAGS) $(FCFLAGS)',
875 'compile_flag' => '-c',
876 'output_flag' => '-o',
877 'libtool_tag' => 'FC',
878 'pure' => 1,
879 'extensions' => ['.F90','.F95']);
881 # Preprocessed Fortran 77
882 #
883 # The current support for preprocessing Fortran 77 just involves
884 # passing `$(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS)
885 # $(CPPFLAGS)' as additional flags to the Fortran 77 compiler, since
886 # this is how GNU Make does it; see the `GNU Make Manual, Edition 0.51
887 # for `make' Version 3.76 Beta' (specifically, from info file
888 # `(make)Catalogue of Rules').
889 #
890 # A better approach would be to write an Autoconf test
891 # (i.e. AC_PROG_FPP) for a Fortran 77 preprocessor, because not all
892 # Fortran 77 compilers know how to do preprocessing. The Autoconf
893 # macro AC_PROG_FPP should test the Fortran 77 compiler first for
894 # preprocessing capabilities, and then fall back on cpp (if cpp were
895 # available).
896 register_language ('name' => 'ppf77',
897 'Name' => 'Preprocessed Fortran 77',
898 'config_vars' => ['F77'],
899 'linker' => 'F77LINK',
900 'link' => '$(F77LD) $(AM_FFLAGS) $(FFLAGS) $(AM_LDFLAGS) $(LDFLAGS) -o $@',
901 'lder' => 'F77LD',
902 'ld' => '$(F77)',
903 'flags' => ['FFLAGS', 'CPPFLAGS'],
904 'compiler' => 'PPF77COMPILE',
905 'compile' => '$(F77) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS) $(CPPFLAGS) $(AM_FFLAGS) $(FFLAGS)',
906 'compile_flag' => '-c',
907 'output_flag' => '-o',
908 'libtool_tag' => 'F77',
909 'pure' => 1,
910 'extensions' => ['.F']);
912 # Ratfor.
913 register_language ('name' => 'ratfor',
914 'Name' => 'Ratfor',
915 'config_vars' => ['F77'],
916 'linker' => 'F77LINK',
917 'link' => '$(F77LD) $(AM_FFLAGS) $(FFLAGS) $(AM_LDFLAGS) $(LDFLAGS) -o $@',
918 'lder' => 'F77LD',
919 'ld' => '$(F77)',
920 'flags' => ['RFLAGS', 'FFLAGS'],
921 # FIXME also FFLAGS.
922 'compile' => '$(F77) $(AM_FFLAGS) $(FFLAGS) $(AM_RFLAGS) $(RFLAGS)',
923 'compiler' => 'RCOMPILE',
924 'compile_flag' => '-c',
925 'output_flag' => '-o',
926 'libtool_tag' => 'F77',
927 'pure' => 1,
928 'extensions' => ['.r']);
930 # Java via gcj.
931 register_language ('name' => 'java',
932 'Name' => 'Java',
933 'config_vars' => ['GCJ'],
934 'linker' => 'GCJLINK',
935 'link' => '$(GCJLD) $(AM_GCJFLAGS) $(GCJFLAGS) $(AM_LDFLAGS) $(LDFLAGS) -o $@',
936 'autodep' => 'GCJ',
937 'flags' => ['GCJFLAGS'],
938 'compile' => '$(GCJ) $(AM_GCJFLAGS) $(GCJFLAGS)',
939 'compiler' => 'GCJCOMPILE',
940 'compile_flag' => '-c',
941 'output_flag' => '-o',
942 'libtool_tag' => 'GCJ',
943 'lder' => 'GCJLD',
944 'ld' => '$(GCJ)',
945 'pure' => 1,
946 'extensions' => ['.java', '.class', '.zip', '.jar']);
948 ################################################################
950 # Error reporting functions.
952 # err_am ($MESSAGE, [%OPTIONS])
953 # -----------------------------
954 # Uncategorized errors about the current Makefile.am.
955 sub err_am ($;%)
956 {
957 msg_am ('error', @_);
958 }
960 # err_ac ($MESSAGE, [%OPTIONS])
961 # -----------------------------
962 # Uncategorized errors about configure.ac.
963 sub err_ac ($;%)
964 {
965 msg_ac ('error', @_);
966 }
968 # msg_am ($CHANNEL, $MESSAGE, [%OPTIONS])
969 # ---------------------------------------
970 # Messages about about the current Makefile.am.
971 sub msg_am ($$;%)
972 {
973 my ($channel, $msg, %opts) = @_;
974 msg $channel, "${am_file}.am", $msg, %opts;
975 }
977 # msg_ac ($CHANNEL, $MESSAGE, [%OPTIONS])
978 # ---------------------------------------
979 # Messages about about configure.ac.
980 sub msg_ac ($$;%)
981 {
982 my ($channel, $msg, %opts) = @_;
983 msg $channel, $configure_ac, $msg, %opts;
984 }
986 ################################################################
988 # subst ($TEXT)
989 # -------------
990 # Return a configure-style substitution using the indicated text.
991 # We do this to avoid having the substitutions directly in automake.in;
992 # when we do that they are sometimes removed and this causes confusion
993 # and bugs.
994 sub subst ($)
995 {
996 my ($text) = @_;
997 return '@' . $text . '@';
998 }
1000 ################################################################
1003 # $BACKPATH
1004 # &backname ($REL-DIR)
1005 # --------------------
1006 # If I `cd $REL-DIR', then to come back, I should `cd $BACKPATH'.
1007 # For instance `src/foo' => `../..'.
1008 # Works with non strictly increasing paths, i.e., `src/../lib' => `..'.
1009 sub backname ($)
1010 {
1011 my ($file) = @_;
1012 my @res;
1013 foreach (split (/\//, $file))
1014 {
1015 next if $_ eq '.' || $_ eq '';
1016 if ($_ eq '..')
1017 {
1018 pop @res;
1019 }
1020 else
1021 {
1022 push (@res, '..');
1023 }
1024 }
1025 return join ('/', @res) || '.';
1026 }
1028 ################################################################
1031 # Handle AUTOMAKE_OPTIONS variable. Return 1 on error, 0 otherwise.
1032 sub handle_options
1033 {
1034 my $var = var ('AUTOMAKE_OPTIONS');
1035 if ($var)
1036 {
1037 # FIXME: We should disallow conditional definitions of AUTOMAKE_OPTIONS.
1038 if (process_option_list ($var->rdef (TRUE)->location,
1039 $var->value_as_list_recursive (cond_filter =>
1040 TRUE)))
1041 {
1042 return 1;
1043 }
1044 }
1046 if ($strictness == GNITS)
1047 {
1048 set_option ('readme-alpha', INTERNAL);
1049 set_option ('std-options', INTERNAL);
1050 set_option ('check-news', INTERNAL);
1051 }
1053 return 0;
1054 }
1056 # shadow_unconditionally ($varname, $where)
1057 # -----------------------------------------
1058 # Return a $(variable) that contains all possible values
1059 # $varname can take.
1060 # If the VAR wasn't defined conditionally, return $(VAR).
1061 # Otherwise we create a am__VAR_DIST variable which contains
1062 # all possible values, and return $(am__VAR_DIST).
1063 sub shadow_unconditionally ($$)
1064 {
1065 my ($varname, $where) = @_;
1066 my $var = var $varname;
1067 if ($var->has_conditional_contents)
1068 {
1069 $varname = "am__${varname}_DIST";
1070 my @files = uniq ($var->value_as_list_recursive);
1071 define_pretty_variable ($varname, TRUE, $where, @files);
1072 }
1073 return "\$($varname)"
1074 }
1076 # get_object_extension ($EXTENSION)
1077 # ---------------------------------
1078 # Prefix $EXTENSION with $U if ansi2knr is in use.
1079 sub get_object_extension ($)
1080 {
1081 my ($extension) = @_;
1083 # Check for automatic de-ANSI-fication.
1084 $extension = '$U' . $extension
1085 if option 'ansi2knr';
1087 $get_object_extension_was_run = 1;
1089 return $extension;
1090 }
1092 # check_user_variables (@LIST)
1093 # ----------------------------
1094 # Make sure each variable VAR in @LIST do not exist, suggest using AM_VAR
1095 # otherwise.
1096 sub check_user_variables (@)
1097 {
1098 my @dont_override = @_;
1099 foreach my $flag (@dont_override)
1100 {
1101 my $var = var $flag;
1102 if ($var)
1103 {
1104 for my $cond ($var->conditions->conds)
1105 {
1106 if ($var->rdef ($cond)->owner == VAR_MAKEFILE)
1107 {
1108 msg_cond_var ('gnu', $cond, $flag,
1109 "`$flag' is a user variable, "
1110 . "you should not override it;\n"
1111 . "use `AM_$flag' instead.");
1112 }
1113 }
1114 }
1115 }
1116 }
1118 # Call finish function for each language that was used.
1119 sub handle_languages
1120 {
1121 if (! option 'no-dependencies')
1122 {
1123 # Include auto-dep code. Don't include it if DEP_FILES would
1124 # be empty.
1125 if (&saw_sources_p (0) && keys %dep_files)
1126 {
1127 # Set location of depcomp.
1128 &define_variable ('depcomp',
1129 "\$(SHELL) $am_config_aux_dir/depcomp",
1130 INTERNAL);
1131 &define_variable ('am__depfiles_maybe', 'depfiles', INTERNAL);
1133 require_conf_file ("$am_file.am", FOREIGN, 'depcomp');
1135 my @deplist = sort keys %dep_files;
1136 # Generate each `include' individually. Irix 6 make will
1137 # not properly include several files resulting from a
1138 # variable expansion; generating many separate includes
1139 # seems safest.
1140 $output_rules .= "\n";
1141 foreach my $iter (@deplist)
1142 {
1143 $output_rules .= (subst ('AMDEP_TRUE')
1144 . subst ('am__include')
1145 . ' '
1146 . subst ('am__quote')
1147 . $iter
1148 . subst ('am__quote')
1149 . "\n");
1150 }
1152 # Compute the set of directories to remove in distclean-depend.
1153 my @depdirs = uniq (map { dirname ($_) } @deplist);
1154 $output_rules .= &file_contents ('depend',
1155 new Automake::Location,
1156 DEPDIRS => "@depdirs");
1157 }
1158 }
1159 else
1160 {
1161 &define_variable ('depcomp', '', INTERNAL);
1162 &define_variable ('am__depfiles_maybe', '', INTERNAL);
1163 }
1165 my %done;
1167 # Is the c linker needed?
1168 my $needs_c = 0;
1169 foreach my $ext (sort keys %extension_seen)
1170 {
1171 next unless $extension_map{$ext};
1173 my $lang = $languages{$extension_map{$ext}};
1175 my $rule_file = $lang->rule_file || 'depend2';
1177 # Get information on $LANG.
1178 my $pfx = $lang->autodep;
1179 my $fpfx = ($pfx eq '') ? 'CC' : $pfx;
1181 my ($AMDEP, $FASTDEP) =
1182 (option 'no-dependencies' || $lang->autodep eq 'no')
1183 ? ('FALSE', 'FALSE') : ('AMDEP', "am__fastdep$fpfx");
1185 my %transform = ('EXT' => $ext,
1186 'PFX' => $pfx,
1187 'FPFX' => $fpfx,
1188 'AMDEP' => $AMDEP,
1189 'FASTDEP' => $FASTDEP,
1190 '-c' => $lang->compile_flag || '',
1191 'MORE-THAN-ONE'
1192 => (count_files_for_language ($lang->name) > 1),
1193 # These are not used, but they need to be defined
1194 # so &transform do not complain.
1195 SUBDIROBJ => 0,
1196 'DERIVED-EXT' => 'BUG',
1197 DIST_SOURCE => 1,
1198 );
1200 # Generate the appropriate rules for this extension.
1201 if (((! option 'no-dependencies') && $lang->autodep ne 'no')
1202 || defined $lang->compile)
1203 {
1204 # Some C compilers don't support -c -o. Use it only if really
1205 # needed.
1206 my $output_flag = $lang->output_flag || '';
1207 $output_flag = '-o'
1208 if (! $output_flag
1209 && $lang->name eq 'c'
1210 && option 'subdir-objects');
1212 # Compute a possible derived extension.
1213 # This is not used by depend2.am.
1214 my $der_ext = (&{$lang->output_extensions} ($ext))[0];
1216 # When we output an inference rule like `.c.o:' we
1217 # have two cases to consider: either subdir-objects
1218 # is used, or it is not.
1219 #
1220 # In the latter case the rule is used to build objects
1221 # in the current directory, and dependencies always
1222 # go into `./$(DEPDIR)/'. We can hard-code this value.
1223 #
1224 # In the former case the rule can be used to build
1225 # objects in sub-directories too. Dependencies should
1226 # go into the appropriate sub-directories, e.g.,
1227 # `sub/$(DEPDIR)/'. The value of this directory
1228 # need the be computed on-the-fly.
1229 #
1230 # DEPBASE holds the name of this directory, plus the
1231 # basename part of the object file (extensions Po, TPo,
1232 # Plo, TPlo will be added later as appropriate). It is
1233 # either hardcoded, or a shell variable (`$depbase') that
1234 # will be computed by the rule.
1235 my $depbase =
1236 option ('subdir-objects') ? '$$depbase' : '$(DEPDIR)/$*';
1237 $output_rules .=
1238 file_contents ($rule_file,
1239 new Automake::Location,
1240 %transform,
1241 GENERIC => 1,
1243 'DERIVED-EXT' => $der_ext,
1245 DEPBASE => $depbase,
1246 BASE => '$*',
1247 SOURCE => '$<',
1248 OBJ => '$@',
1249 OBJOBJ => '$@',
1250 LTOBJ => '$@',
1252 COMPILE => '$(' . $lang->compiler . ')',
1253 LTCOMPILE => '$(LT' . $lang->compiler . ')',
1254 -o => $output_flag,
1255 SUBDIROBJ => !! option 'subdir-objects');
1256 }
1258 # Now include code for each specially handled object with this
1259 # language.
1260 my %seen_files = ();
1261 foreach my $file (@{$lang_specific_files{$lang->name}})
1262 {
1263 my ($derived, $source, $obj, $myext, %file_transform) = @$file;
1265 # We might see a given object twice, for instance if it is
1266 # used under different conditions.
1267 next if defined $seen_files{$obj};
1268 $seen_files{$obj} = 1;
1270 prog_error ("found " . $lang->name .
1271 " in handle_languages, but compiler not defined")
1272 unless defined $lang->compile;
1274 my $obj_compile = $lang->compile;
1276 # Rewrite each occurrence of `AM_$flag' in the compile
1277 # rule into `${derived}_$flag' if it exists.
1278 for my $flag (@{$lang->flags})
1279 {
1280 my $val = "${derived}_$flag";
1281 $obj_compile =~ s/\(AM_$flag\)/\($val\)/
1282 if set_seen ($val);
1283 }
1285 my $libtool_tag = '';
1286 if ($lang->libtool_tag && exists $libtool_tags{$lang->libtool_tag})
1287 {
1288 $libtool_tag = '--tag=' . $lang->libtool_tag . ' '
1289 }
1291 my $ptltflags = "${derived}_LIBTOOLFLAGS";
1292 $ptltflags = 'AM_LIBTOOLFLAGS' unless set_seen $ptltflags;
1294 my $obj_ltcompile =
1295 "\$(LIBTOOL) $libtool_tag\$($ptltflags) \$(LIBTOOLFLAGS) "
1296 . "--mode=compile $obj_compile";
1298 # We _need_ `-o' for per object rules.
1299 my $output_flag = $lang->output_flag || '-o';
1301 my $depbase = dirname ($obj);
1302 $depbase = ''
1303 if $depbase eq '.';
1304 $depbase .= '/'
1305 unless $depbase eq '';
1306 $depbase .= '$(DEPDIR)/' . basename ($obj);
1308 # Support for deansified files in subdirectories is ugly
1309 # enough to deserve an explanation.
1310 #
1311 # A Note about normal ansi2knr processing first. On
1312 #
1313 # AUTOMAKE_OPTIONS = ansi2knr
1314 # bin_PROGRAMS = foo
1315 # foo_SOURCES = foo.c
1316 #
1317 # we generate rules similar to:
1318 #
1319 # foo: foo$U.o; link ...
1320 # foo$U.o: foo$U.c; compile ...
1321 # foo_.c: foo.c; ansi2knr ...
1322 #
1323 # this is fairly compact, and will call ansi2knr depending
1324 # on the value of $U (`' or `_').
1325 #
1326 # It's harder with subdir sources. On
1327 #
1328 # AUTOMAKE_OPTIONS = ansi2knr
1329 # bin_PROGRAMS = foo
1330 # foo_SOURCES = sub/foo.c
1331 #
1332 # we have to create foo_.c in the current directory.
1333 # (Unless the user asks 'subdir-objects'.) This is important
1334 # in case the same file (`foo.c') is compiled from other
1335 # directories with different cpp options: foo_.c would
1336 # be preprocessed for only one set of options if it were
1337 # put in the subdirectory.
1338 #
1339 # Because foo$U.o must be built from either foo_.c or
1340 # sub/foo.c we can't be as concise as in the first example.
1341 # Instead we output
1342 #
1343 # foo: foo$U.o; link ...
1344 # foo_.o: foo_.c; compile ...
1345 # foo.o: sub/foo.c; compile ...
1346 # foo_.c: foo.c; ansi2knr ...
1347 #
1348 # This is why we'll now transform $rule_file twice
1349 # if we detect this case.
1350 # A first time we output the compile rule with `$U'
1351 # replaced by `_' and the source directory removed,
1352 # and another time we simply remove `$U'.
1353 #
1354 # Note that at this point $source (as computed by
1355 # &handle_single_transform) is `sub/foo$U.c'.
1356 # This can be confusing: it can be used as-is when
1357 # subdir-objects is set, otherwise you have to know
1358 # it really means `foo_.c' or `sub/foo.c'.
1359 my $objdir = dirname ($obj);
1360 my $srcdir = dirname ($source);
1361 if ($lang->ansi && $obj =~ /\$U/)
1362 {
1363 prog_error "`$obj' contains \$U, but `$source' doesn't."
1364 if $source !~ /\$U/;
1366 (my $source_ = $source) =~ s/\$U/_/g;
1367 # Output an additional rule if _.c and .c are not in
1368 # the same directory. (_.c is always in $objdir.)
1369 if ($objdir ne $srcdir)
1370 {
1371 (my $obj_ = $obj) =~ s/\$U/_/g;
1372 (my $depbase_ = $depbase) =~ s/\$U/_/g;
1373 $source_ = basename ($source_);
1375 $output_rules .=
1376 file_contents ($rule_file,
1377 new Automake::Location,
1378 %transform,
1379 GENERIC => 0,
1381 DEPBASE => $depbase_,
1382 BASE => $obj_,
1383 SOURCE => $source_,
1384 OBJ => "$obj_$myext",
1385 OBJOBJ => "$obj_.obj",
1386 LTOBJ => "$obj_.lo",
1388 COMPILE => $obj_compile,
1389 LTCOMPILE => $obj_ltcompile,
1390 -o => $output_flag,
1391 %file_transform);
1392 $obj =~ s/\$U//g;
1393 $depbase =~ s/\$U//g;
1394 $source =~ s/\$U//g;
1395 }
1396 }
1398 $output_rules .=
1399 file_contents ($rule_file,
1400 new Automake::Location,
1401 %transform,
1402 GENERIC => 0,
1404 DEPBASE => $depbase,
1405 BASE => $obj,
1406 SOURCE => $source,
1407 # Use $myext and not `.o' here, in case
1408 # we are actually building a new source
1409 # file -- e.g. via yacc.
1410 OBJ => "$obj$myext",
1411 OBJOBJ => "$obj.obj",
1412 LTOBJ => "$obj.lo",
1414 COMPILE => $obj_compile,
1415 LTCOMPILE => $obj_ltcompile,
1416 -o => $output_flag,
1417 %file_transform);
1418 }
1420 # The rest of the loop is done once per language.
1421 next if defined $done{$lang};
1422 $done{$lang} = 1;
1424 # Load the language dependent Makefile chunks.
1425 my %lang = map { uc ($_) => 0 } keys %languages;
1426 $lang{uc ($lang->name)} = 1;
1427 $output_rules .= file_contents ('lang-compile',
1428 new Automake::Location,
1429 %transform, %lang);
1431 # If the source to a program consists entirely of code from a
1432 # `pure' language, for instance C++ or Fortran 77, then we
1433 # don't need the C compiler code. However if we run into
1434 # something unusual then we do generate the C code. There are
1435 # probably corner cases here that do not work properly.
1436 # People linking Java code to Fortran code deserve pain.
1437 $needs_c ||= ! $lang->pure;
1439 define_compiler_variable ($lang)
1440 if ($lang->compile);
1442 define_linker_variable ($lang)
1443 if ($lang->link);
1445 require_variables ("$am_file.am", $lang->Name . " source seen",
1446 TRUE, @{$lang->config_vars});
1448 # Call the finisher.
1449 $lang->finish;
1451 # Flags listed in `->flags' are user variables (per GNU Standards),
1452 # they should not be overridden in the Makefile...
1453 my @dont_override = @{$lang->flags};
1454 # ... and so is LDFLAGS.
1455 push @dont_override, 'LDFLAGS' if $lang->link;
1457 check_user_variables @dont_override;
1458 }
1460 # If the project is entirely C++ or entirely Fortran 77 (i.e., 1
1461 # suffix rule was learned), don't bother with the C stuff. But if
1462 # anything else creeps in, then use it.
1463 $needs_c = 1
1464 if $need_link || suffix_rules_count > 1;
1466 if ($needs_c)
1467 {
1468 &define_compiler_variable ($languages{'c'})
1469 unless defined $done{$languages{'c'}};
1470 define_linker_variable ($languages{'c'});
1471 }
1472 }
1474 # Check to make sure a source defined in LIBOBJS is not explicitly
1475 # mentioned. This is a separate function (as opposed to being inlined
1476 # in handle_source_transform) because it isn't always appropriate to
1477 # do this check.
1478 sub check_libobjs_sources
1479 {
1480 my ($one_file, $unxformed) = @_;
1482 foreach my $prefix ('', 'EXTRA_', 'dist_', 'nodist_',
1483 'dist_EXTRA_', 'nodist_EXTRA_')
1484 {
1485 my @files;
1486 my $varname = $prefix . $one_file . '_SOURCES';
1487 my $var = var ($varname);
1488 if ($var)
1489 {
1490 @files = $var->value_as_list_recursive;
1491 }
1492 elsif ($prefix eq '')
1493 {
1494 @files = ($unxformed . '.c');
1495 }
1496 else
1497 {
1498 next;
1499 }
1501 foreach my $file (@files)
1502 {
1503 err_var ($prefix . $one_file . '_SOURCES',
1504 "automatically discovered file `$file' should not" .
1505 " be explicitly mentioned")
1506 if defined $libsources{$file};
1507 }
1508 }
1509 }
1512 # @OBJECTS
1513 # handle_single_transform ($VAR, $TOPPARENT, $DERIVED, $OBJ, $FILE, %TRANSFORM)
1514 # -----------------------------------------------------------------------------
1515 # Does much of the actual work for handle_source_transform.
1516 # Arguments are:
1517 # $VAR is the name of the variable that the source filenames come from
1518 # $TOPPARENT is the name of the _SOURCES variable which is being processed
1519 # $DERIVED is the name of resulting executable or library
1520 # $OBJ is the object extension (e.g., `$U.lo')
1521 # $FILE the source file to transform
1522 # %TRANSFORM contains extras arguments to pass to file_contents
1523 # when producing explicit rules
1524 # Result is a list of the names of objects
1525 # %linkers_used will be updated with any linkers needed
1526 sub handle_single_transform ($$$$$%)
1527 {
1528 my ($var, $topparent, $derived, $obj, $_file, %transform) = @_;
1529 my @files = ($_file);
1530 my @result = ();
1531 my $nonansi_obj = $obj;
1532 $nonansi_obj =~ s/\$U//g;
1534 # Turn sources into objects. We use a while loop like this
1535 # because we might add to @files in the loop.
1536 while (scalar @files > 0)
1537 {
1538 $_ = shift @files;
1540 # Configure substitutions in _SOURCES variables are errors.
1541 if (/^\@.*\@$/)
1542 {
1543 my $parent_msg = '';
1544 $parent_msg = "\nand is referred to from `$topparent'"
1545 if $topparent ne $var->name;
1546 err_var ($var,
1547 "`" . $var->name . "' includes configure substitution `$_'"
1548 . $parent_msg . ";\nconfigure " .
1549 "substitutions are not allowed in _SOURCES variables");
1550 next;
1551 }
1553 # If the source file is in a subdirectory then the `.o' is put
1554 # into the current directory, unless the subdir-objects option
1555 # is in effect.
1557 # Split file name into base and extension.
1558 next if ! /^(?:(.*)\/)?([^\/]*)($KNOWN_EXTENSIONS_PATTERN)$/;
1559 my $full = $_;
1560 my $directory = $1 || '';
1561 my $base = $2;
1562 my $extension = $3;
1564 # We must generate a rule for the object if it requires its own flags.
1565 my $renamed = 0;
1566 my ($linker, $object);
1568 # This records whether we've seen a derived source file (e.g.
1569 # yacc output).
1570 my $derived_source = 0;
1572 # This holds the `aggregate context' of the file we are
1573 # currently examining. If the file is compiled with
1574 # per-object flags, then it will be the name of the object.
1575 # Otherwise it will be `AM'. This is used by the target hook
1576 # language function.
1577 my $aggregate = 'AM';
1579 $extension = &derive_suffix ($extension, $nonansi_obj);
1580 my $lang;
1581 if ($extension_map{$extension} &&
1582 ($lang = $languages{$extension_map{$extension}}))
1583 {
1584 # Found the language, so see what it says.
1585 &saw_extension ($extension);
1587 # Do we have per-executable flags for this executable?
1588 my $have_per_exec_flags = 0;
1589 my @peflags = @{$lang->flags};
1590 push @peflags, 'LIBTOOLFLAGS' if $nonansi_obj eq '.lo';
1591 foreach my $flag (@peflags)
1592 {
1593 if (set_seen ("${derived}_$flag"))
1594 {
1595 $have_per_exec_flags = 1;
1596 last;
1597 }
1598 }
1600 # Note: computed subr call. The language rewrite function
1601 # should return one of the LANG_* constants. It could
1602 # also return a list whose first value is such a constant
1603 # and whose second value is a new source extension which
1604 # should be applied. This means this particular language
1605 # generates another source file which we must then process
1606 # further.
1607 my $subr = \&{'lang_' . $lang->name . '_rewrite'};
1608 my ($r, $source_extension)
1609 = &$subr ($directory, $base, $extension,
1610 $nonansi_obj, $have_per_exec_flags, $var);
1611 # Skip this entry if we were asked not to process it.
1612 next if $r == LANG_IGNORE;
1614 # Now extract linker and other info.
1615 $linker = $lang->linker;
1617 my $this_obj_ext;
1618 if (defined $source_extension)
1619 {
1620 $this_obj_ext = $source_extension;
1621 $derived_source = 1;
1622 }
1623 elsif ($lang->ansi)
1624 {
1625 $this_obj_ext = $obj;
1626 }
1627 else
1628 {
1629 $this_obj_ext = $nonansi_obj;
1630 }
1631 $object = $base . $this_obj_ext;
1633 if ($have_per_exec_flags)
1634 {
1635 # We have a per-executable flag in effect for this
1636 # object. In this case we rewrite the object's
1637 # name to ensure it is unique.
1639 # We choose the name `DERIVED_OBJECT' to ensure
1640 # (1) uniqueness, and (2) continuity between
1641 # invocations. However, this will result in a
1642 # name that is too long for losing systems, in
1643 # some situations. So we provide _SHORTNAME to
1644 # override.
1646 my $dname = $derived;
1647 my $var = var ($derived . '_SHORTNAME');
1648 if ($var)
1649 {
1650 # FIXME: should use the same Condition as
1651 # the _SOURCES variable. But this is really
1652 # silly overkill -- nobody should have
1653 # conditional shortnames.
1654 $dname = $var->variable_value;
1655 }
1656 $object = $dname . '-' . $object;
1658 prog_error ($lang->name . " flags defined without compiler")
1659 if ! defined $lang->compile;
1661 $renamed = 1;
1662 }
1664 # If rewrite said it was ok, put the object into a
1665 # subdir.
1666 if ($r == LANG_SUBDIR && $directory ne '')
1667 {
1668 $object = $directory . '/' . $object;
1669 }
1671 # If the object file has been renamed (because per-target
1672 # flags are used) we cannot compile the file with an
1673 # inference rule: we need an explicit rule.
1674 #
1675 # If the source is in a subdirectory and the object is in
1676 # the current directory, we also need an explicit rule.
1677 #
1678 # If both source and object files are in a subdirectory
1679 # (this happens when the subdir-objects option is used),
1680 # then the inference will work.
1681 #
1682 # The latter case deserves a historical note. When the
1683 # subdir-objects option was added on 1999-04-11 it was
1684 # thought that inferences rules would work for
1685 # subdirectory objects too. Later, on 1999-11-22,
1686 # automake was changed to output explicit rules even for
1687 # subdir-objects. Nobody remembers why, but this occured
1688 # soon after the merge of the user-dep-gen-branch so it
1689 # might be related. In late 2003 people complained about
1690 # the size of the generated Makefile.ins (libgcj, with
1691 # 2200+ subdir objects was reported to have a 9MB
1692 # Makefile), so we now rely on inference rules again.
1693 # Maybe we'll run across the same issue as in the past,
1694 # but at least this time we can document it. However since
1695 # dependency tracking has evolved it is possible that
1696 # our old problem no longer exists.
1697 # Using inference rules for subdir-objects has been tested
1698 # with GNU make, Solaris make, Ultrix make, BSD make,
1699 # HP-UX make, and OSF1 make successfully.
1700 if ($renamed
1701 || ($directory ne '' && ! option 'subdir-objects')
1702 # We must also use specific rules for a nodist_ source
1703 # if its language requests it.
1704 || ($lang->nodist_specific && ! $transform{'DIST_SOURCE'}))
1705 {
1706 my $obj_sans_ext = substr ($object, 0,
1707 - length ($this_obj_ext));
1708 my $full_ansi = $full;
1709 if ($lang->ansi && option 'ansi2knr')
1710 {
1711 $full_ansi =~ s/$KNOWN_EXTENSIONS_PATTERN$/\$U$&/;
1712 $obj_sans_ext .= '$U';
1713 }
1715 my @specifics = ($full_ansi, $obj_sans_ext,
1716 # Only use $this_obj_ext in the derived
1717 # source case because in the other case we
1718 # *don't* want $(OBJEXT) to appear here.
1719 ($derived_source ? $this_obj_ext : '.o'));
1721 # If we renamed the object then we want to use the
1722 # per-executable flag name. But if this is simply a
1723 # subdir build then we still want to use the AM_ flag
1724 # name.
1725 if ($renamed)
1726 {
1727 unshift @specifics, $derived;
1728 $aggregate = $derived;
1729 }
1730 else
1731 {
1732 unshift @specifics, 'AM';
1733 }
1735 # Each item on this list is a reference to a list consisting
1736 # of four values followed by additional transform flags for
1737 # file_contents. The four values are the derived flag prefix
1738 # (e.g. for `foo_CFLAGS', it is `foo'), the name of the
1739 # source file, the base name of the output file, and
1740 # the extension for the object file.
1741 push (@{$lang_specific_files{$lang->name}},
1742 [@specifics, %transform]);
1743 }
1744 }
1745 elsif ($extension eq $nonansi_obj)
1746 {
1747 # This is probably the result of a direct suffix rule.
1748 # In this case we just accept the rewrite.
1749 $object = "$base$extension";
1750 $linker = '';
1751 }
1752 else
1753 {
1754 # No error message here. Used to have one, but it was
1755 # very unpopular.
1756 # FIXME: we could potentially do more processing here,
1757 # perhaps treating the new extension as though it were a
1758 # new source extension (as above). This would require
1759 # more restructuring than is appropriate right now.
1760 next;
1761 }
1763 err_am "object `$object' created by `$full' and `$object_map{$object}'"
1764 if (defined $object_map{$object}
1765 && $object_map{$object} ne $full);
1767 my $comp_val = (($object =~ /\.lo$/)
1768 ? COMPILE_LIBTOOL : COMPILE_ORDINARY);
1769 (my $comp_obj = $object) =~ s/\.lo$/.\$(OBJEXT)/;
1770 if (defined $object_compilation_map{$comp_obj}
1771 && $object_compilation_map{$comp_obj} != 0
1772 # Only see the error once.
1773 && ($object_compilation_map{$comp_obj}
1774 != (COMPILE_LIBTOOL | COMPILE_ORDINARY))
1775 && $object_compilation_map{$comp_obj} != $comp_val)
1776 {
1777 err_am "object `$comp_obj' created both with libtool and without";
1778 }
1779 $object_compilation_map{$comp_obj} |= $comp_val;
1781 if (defined $lang)
1782 {
1783 # Let the language do some special magic if required.
1784 $lang->target_hook ($aggregate, $object, $full, %transform);
1785 }
1787 if ($derived_source)
1788 {
1789 prog_error ($lang->name . " has automatic dependency tracking")
1790 if $lang->autodep ne 'no';
1791 # Make sure this new source file is handled next. That will
1792 # make it appear to be at the right place in the list.
1793 unshift (@files, $object);
1794 # Distribute derived sources unless the source they are
1795 # derived from is not.
1796 &push_dist_common ($object)
1797 unless ($topparent =~ /^(?:nobase_)?nodist_/);
1798 next;
1799 }
1801 $linkers_used{$linker} = 1;
1803 push (@result, $object);
1805 if (! defined $object_map{$object})
1806 {
1807 my @dep_list = ();
1808 $object_map{$object} = $full;
1810 # If resulting object is in subdir, we need to make
1811 # sure the subdir exists at build time.
1812 if ($object =~ /\//)
1813 {
1814 # FIXME: check that $DIRECTORY is somewhere in the
1815 # project
1817 # For Java, the way we're handling it right now, a
1818 # `..' component doesn't make sense.
1819 if ($lang->name eq 'java' && $object =~ /(\/|^)\.\.\//)
1820 {
1821 err_am "`$full' should not contain a `..' component";
1822 }
1824 # Make sure object is removed by `make mostlyclean'.
1825 $compile_clean_files{$object} = MOSTLY_CLEAN;
1826 # If we have a libtool object then we also must remove
1827 # the ordinary .o.
1828 if ($object =~ /\.lo$/)
1829 {
1830 (my $xobj = $object) =~ s,lo$,\$(OBJEXT),;
1831 $compile_clean_files{$xobj} = MOSTLY_CLEAN;
1833 # Remove any libtool object in this directory.
1834 $libtool_clean_directories{$directory} = 1;
1835 }
1837 push (@dep_list, require_build_directory ($directory));
1839 # If we're generating dependencies, we also want
1840 # to make sure that the appropriate subdir of the
1841 # .deps directory is created.
1842 push (@dep_list,
1843 require_build_directory ($directory . '/$(DEPDIR)'))
1844 unless option 'no-dependencies';
1845 }
1847 &pretty_print_rule ($object . ':', "\t", @dep_list)
1848 if scalar @dep_list > 0;
1849 }
1851 # Transform .o or $o file into .P file (for automatic
1852 # dependency code).
1853 if ($lang && $lang->autodep ne 'no')
1854 {
1855 my $depfile = $object;
1856 $depfile =~ s/\.([^.]*)$/.P$1/;
1857 $depfile =~ s/\$\(OBJEXT\)$/o/;
1858 $dep_files{dirname ($depfile) . '/$(DEPDIR)/'
1859 . basename ($depfile)} = 1;
1860 }
1861 }
1863 return @result;
1864 }
1867 # $LINKER
1868 # define_objects_from_sources ($VAR, $OBJVAR, $NODEFINE, $ONE_FILE,
1869 # $OBJ, $PARENT, $TOPPARENT, $WHERE, %TRANSFORM)
1870 # ---------------------------------------------------------------------------
1871 # Define an _OBJECTS variable for a _SOURCES variable (or subvariable)
1872 #
1873 # Arguments are:
1874 # $VAR is the name of the _SOURCES variable
1875 # $OBJVAR is the name of the _OBJECTS variable if known (otherwise
1876 # it will be generated and returned).
1877 # $NODEFINE is a boolean: if true, $OBJVAR will not be defined (but
1878 # work done to determine the linker will be).
1879 # $ONE_FILE is the canonical (transformed) name of object to build
1880 # $OBJ is the object extension (i.e. either `.o' or `.lo').
1881 # $TOPPARENT is the _SOURCES variable being processed.
1882 # $WHERE context into which this definition is done
1883 # %TRANSFORM extra arguments to pass to file_contents when producing
1884 # rules
1885 #
1886 # Result is a pair ($LINKER, $OBJVAR):
1887 # $LINKER is a boolean, true if a linker is needed to deal with the objects
1888 sub define_objects_from_sources ($$$$$$$%)
1889 {
1890 my ($var, $objvar, $nodefine, $one_file,
1891 $obj, $topparent, $where, %transform) = @_;
1893 my $needlinker = "";
1895 transform_variable_recursively
1896 ($var, $objvar, 'am__objects', $nodefine, $where,
1897 # The transform code to run on each filename.
1898 sub {
1899 my ($subvar, $val, $cond, $full_cond) = @_;
1900 my @trans = handle_single_transform ($subvar, $topparent,
1901 $one_file, $obj, $val,
1902 %transform);
1903 $needlinker = "true" if @trans;
1904 return @trans;
1905 });
1907 return $needlinker;
1908 }
1911 # handle_source_transform ($CANON_TARGET, $TARGET, $OBJEXT, $WHERE, %TRANSFORM)
1912 # -----------------------------------------------------------------------------
1913 # Handle SOURCE->OBJECT transform for one program or library.
1914 # Arguments are:
1915 # canonical (transformed) name of target to build
1916 # actual target of object to build
1917 # object extension (i.e. either `.o' or `$o'.
1918 # location of the source variable
1919 # extra arguments to pass to file_contents when producing rules
1920 # Return result is name of linker variable that must be used.
1921 # Empty return means just use `LINK'.
1922 sub handle_source_transform ($$$$%)
1923 {
1924 # one_file is canonical name. unxformed is given name. obj is
1925 # object extension.
1926 my ($one_file, $unxformed, $obj, $where, %transform) = @_;
1928 my $linker = '';
1930 # No point in continuing if _OBJECTS is defined.
1931 return if reject_var ($one_file . '_OBJECTS',
1932 $one_file . '_OBJECTS should not be defined');
1934 my %used_pfx = ();
1935 my $needlinker;
1936 %linkers_used = ();
1937 foreach my $prefix ('', 'EXTRA_', 'dist_', 'nodist_',
1938 'dist_EXTRA_', 'nodist_EXTRA_')
1939 {
1940 my $varname = $prefix . $one_file . "_SOURCES";
1941 my $var = var $varname;
1942 next unless $var;
1944 # We are going to define _OBJECTS variables using the prefix.
1945 # Then we glom them all together. So we can't use the null
1946 # prefix here as we need it later.
1947 my $xpfx = ($prefix eq '') ? 'am_' : $prefix;
1949 # Keep track of which prefixes we saw.
1950 $used_pfx{$xpfx} = 1
1951 unless $prefix =~ /EXTRA_/;
1953 push @sources, "\$($varname)";
1954 push @dist_sources, shadow_unconditionally ($varname, $where)
1955 unless (option ('no-dist') || $prefix =~ /^nodist_/);
1957 $needlinker |=
1958 define_objects_from_sources ($varname,
1959 $xpfx . $one_file . '_OBJECTS',
1960 $prefix =~ /EXTRA_/,
1961 $one_file, $obj, $varname, $where,
1962 DIST_SOURCE => ($prefix !~ /^nodist_/),
1963 %transform);
1964 }
1965 if ($needlinker)
1966 {
1967 $linker ||= &resolve_linker (%linkers_used);
1968 }
1970 my @keys = sort keys %used_pfx;
1971 if (scalar @keys == 0)
1972 {
1973 # The default source for libfoo.la is libfoo.c, but for
1974 # backward compatibility we first look at libfoo_la.c
1975 my $old_default_source = "$one_file.c";
1976 (my $default_source = $unxformed) =~ s,(\.[^./\\]*)?$,.c,;
1977 if ($old_default_source ne $default_source
1978 && (rule $old_default_source
1979 || rule '$(srcdir)/' . $old_default_source
1980 || rule '${srcdir}/' . $old_default_source
1981 || -f $old_default_source))
1982 {
1983 my $loc = $where->clone;
1984 $loc->pop_context;
1985 msg ('obsolete', $loc,
1986 "the default source for `$unxformed' has been changed "
1987 . "to `$default_source'.\n(Using `$old_default_source' for "
1988 . "backward compatibility.)");
1989 $default_source = $old_default_source;
1990 }
1991 # If a rule exists to build this source with a $(srcdir)
1992 # prefix, use that prefix in our variables too. This is for
1993 # the sake of BSD Make.
1994 if (rule '$(srcdir)/' . $default_source
1995 || rule '${srcdir}/' . $default_source)
1996 {
1997 $default_source = '$(srcdir)/' . $default_source;
1998 }
2000 &define_variable ($one_file . "_SOURCES", $default_source, $where);
2001 push (@sources, $default_source);
2002 push (@dist_sources, $default_source);
2004 %linkers_used = ();
2005 my (@result) =
2006 handle_single_transform ($one_file . '_SOURCES',
2007 $one_file . '_SOURCES',
2008 $one_file, $obj,
2009 $default_source, %transform);
2010 $linker ||= &resolve_linker (%linkers_used);
2011 define_pretty_variable ($one_file . '_OBJECTS', TRUE, $where, @result);
2012 }
2013 else
2014 {
2015 @keys = map { '$(' . $_ . $one_file . '_OBJECTS)' } @keys;
2016 define_pretty_variable ($one_file . '_OBJECTS', TRUE, $where, @keys);
2017 }
2019 # If we want to use `LINK' we must make sure it is defined.
2020 if ($linker eq '')
2021 {
2022 $need_link = 1;
2023 }
2025 return $linker;
2026 }
2029 # handle_lib_objects ($XNAME, $VAR)
2030 # ---------------------------------
2031 # Special-case ALLOCA and LIBOBJS substitutions in _LDADD or _LIBADD variables.
2032 # Also, generate _DEPENDENCIES variable if appropriate.
2033 # Arguments are:
2034 # transformed name of object being built, or empty string if no object
2035 # name of _LDADD/_LIBADD-type variable to examine
2036 # Returns 1 if LIBOBJS seen, 0 otherwise.
2037 sub handle_lib_objects
2038 {
2039 my ($xname, $varname) = @_;
2041 my $var = var ($varname);
2042 prog_error "handle_lib_objects: `$varname' undefined"
2043 unless $var;
2044 prog_error "handle_lib_objects: unexpected variable name `$varname'"
2045 unless $varname =~ /^(.*)(?:LIB|LD)ADD$/;
2046 my $prefix = $1 || 'AM_';
2048 my $seen_libobjs = 0;
2049 my $flagvar = 0;
2051 transform_variable_recursively
2052 ($varname, $xname . '_DEPENDENCIES', 'am__DEPENDENCIES',
2053 ! $xname, INTERNAL,
2054 # Transformation function, run on each filename.
2055 sub {
2056 my ($subvar, $val, $cond, $full_cond) = @_;
2058 if ($val =~ /^-/)
2059 {
2060 # Skip -lfoo and -Ldir silently; these are explicitly allowed.
2061 if ($val !~ /^-[lL]/ &&
2062 # Skip -dlopen and -dlpreopen; these are explicitly allowed
2063 # for Libtool libraries or programs. (Actually we are a bit
2064 # laxest here since this code also applies to non-libtool
2065 # libraries or programs, for which -dlopen and -dlopreopen
2066 # are pure non-sence. Diagnosting this doesn't seems very
2067 # important: the developer will quickly get complaints from
2068 # the linker.)
2069 $val !~ /^-dl(?:pre)?open$/ &&
2070 # Only get this error once.
2071 ! $flagvar)
2072 {
2073 $flagvar = 1;
2074 # FIXME: should display a stack of nested variables
2075 # as context when $var != $subvar.
2076 err_var ($var, "linker flags such as `$val' belong in "
2077 . "`${prefix}LDFLAGS");
2078 }
2079 return ();
2080 }
2081 elsif ($val !~ /^\@.*\@$/)
2082 {
2083 # Assume we have a file of some sort, and output it into the
2084 # dependency variable. Autoconf substitutions are not output;
2085 # rarely is a new dependency substituted into e.g. foo_LDADD
2086 # -- but bad things (e.g. -lX11) are routinely substituted.
2087 # Note that LIBOBJS and ALLOCA are exceptions to this rule,
2088 # and handled specially below.
2089 return $val;
2090 }
2091 elsif ($val =~ /^\@(LT)?LIBOBJS\@$/)
2092 {
2093 handle_LIBOBJS ($subvar, $cond, $1);
2094 $seen_libobjs = 1;
2095 return $val;
2096 }
2097 elsif ($val =~ /^\@(LT)?ALLOCA\@$/)
2098 {
2099 handle_ALLOCA ($subvar, $cond, $1);
2100 return $val;
2101 }
2102 else
2103 {
2104 return ();
2105 }
2106 });
2108 return $seen_libobjs;
2109 }
2111 sub handle_LIBOBJS ($$$)
2112 {
2113 my ($var, $cond, $lt) = @_;
2114 $lt ||= '';
2115 my $myobjext = ($1 ? 'l' : '') . 'o';
2117 $var->requires_variables ("\@${lt}LIBOBJS\@ used", $lt . 'LIBOBJS')
2118 if ! keys %libsources;
2120 foreach my $iter (keys %libsources)
2121 {
2122 if ($iter =~ /\.[cly]$/)
2123 {
2124 &saw_extension ($&);
2125 &saw_extension ('.c');
2126 }
2128 if ($iter =~ /\.h$/)
2129 {
2130 require_file_with_macro ($cond, $var, FOREIGN, $iter);
2131 }
2132 elsif ($iter ne 'alloca.c')
2133 {
2134 my $rewrite = $iter;
2135 $rewrite =~ s/\.c$/.P$myobjext/;
2136 $dep_files{'$(DEPDIR)/' . $rewrite} = 1;
2137 $rewrite = "^" . quotemeta ($iter) . "\$";
2138 # Only require the file if it is not a built source.
2139 my $bs = var ('BUILT_SOURCES');
2140 if (! $bs || ! grep (/$rewrite/, $bs->value_as_list_recursive))
2141 {
2142 require_file_with_macro ($cond, $var, FOREIGN, $iter);
2143 }
2144 }
2145 }
2146 }
2148 sub handle_ALLOCA ($$$)
2149 {
2150 my ($var, $cond, $lt) = @_;
2151 my $myobjext = ($lt ? 'l' : '') . 'o';
2152 $lt ||= '';
2153 $var->requires_variables ("\@${lt}ALLOCA\@ used", $lt . 'ALLOCA');
2154 $dep_files{'$(DEPDIR)/alloca.P' . $myobjext} = 1;
2155 require_file_with_macro ($cond, $var, FOREIGN, 'alloca.c');
2156 &saw_extension ('c');
2157 }
2159 # Canonicalize the input parameter
2160 sub canonicalize
2161 {
2162 my ($string) = @_;
2163 $string =~ tr/A-Za-z0-9_\@/_/c;
2164 return $string;
2165 }
2167 # Canonicalize a name, and check to make sure the non-canonical name
2168 # is never used. Returns canonical name. Arguments are name and a
2169 # list of suffixes to check for.
2170 sub check_canonical_spelling
2171 {
2172 my ($name, @suffixes) = @_;
2174 my $xname = &canonicalize ($name);
2175 if ($xname ne $name)
2176 {
2177 foreach my $xt (@suffixes)
2178 {
2179 reject_var ("$name$xt", "use `$xname$xt', not `$name$xt'");
2180 }
2181 }
2183 return $xname;
2184 }
2187 # handle_compile ()
2188 # -----------------
2189 # Set up the compile suite.
2190 sub handle_compile ()
2191 {
2192 return
2193 unless $get_object_extension_was_run;
2195 # Boilerplate.
2196 my $default_includes = '';
2197 if (! option 'nostdinc')
2198 {
2199 $default_includes = ' -I. -I$(srcdir)';
2201 my $var = var 'CONFIG_HEADER';
2202 if ($var)
2203 {
2204 foreach my $hdr (split (' ', $var->variable_value))
2205 {
2206 $default_includes .= ' -I' . dirname ($hdr);
2207 }
2208 }
2209 }
2211 my (@mostly_rms, @dist_rms);
2212 foreach my $item (sort keys %compile_clean_files)
2213 {
2214 if ($compile_clean_files{$item} == MOSTLY_CLEAN)
2215 {
2216 push (@mostly_rms, "\t-rm -f $item");
2217 }
2218 elsif ($compile_clean_files{$item} == DIST_CLEAN)
2219 {
2220 push (@dist_rms, "\t-rm -f $item");
2221 }
2222 else
2223 {
2224 prog_error 'invalid entry in %compile_clean_files';
2225 }
2226 }
2228 my ($coms, $vars, $rules) =
2229 &file_contents_internal (1, "$libdir/am/compile.am",
2230 new Automake::Location,
2231 ('DEFAULT_INCLUDES' => $default_includes,
2232 'MOSTLYRMS' => join ("\n", @mostly_rms),
2233 'DISTRMS' => join ("\n", @dist_rms)));
2234 $output_vars .= $vars;
2235 $output_rules .= "$coms$rules";
2237 # Check for automatic de-ANSI-fication.
2238 if (option 'ansi2knr')
2239 {
2240 my ($ansi2knr_filename, $ansi2knr_where) = @{option 'ansi2knr'};
2241 my $ansi2knr_dir = '';
2243 require_variables ($ansi2knr_where, "option `ansi2knr' is used",
2244 TRUE, "ANSI2KNR", "U");
2246 # topdir is where ansi2knr should be.
2247 if ($ansi2knr_filename eq 'ansi2knr')
2248 {
2249 # Only require ansi2knr files if they should appear in
2250 # this directory.
2251 require_file ($ansi2knr_where, FOREIGN,
2252 'ansi2knr.c', 'ansi2knr.1');
2254 # ansi2knr needs to be built before subdirs, so unshift it.
2255 unshift (@all, '$(ANSI2KNR)');
2256 }
2257 else
2258 {
2259 $ansi2knr_dir = dirname ($ansi2knr_filename);
2260 }
2262 $output_rules .= &file_contents ('ansi2knr',
2263 new Automake::Location,
2264 'ANSI2KNR-DIR' => $ansi2knr_dir);
2266 }
2267 }
2269 # handle_libtool ()
2270 # -----------------
2271 # Handle libtool rules.
2272 sub handle_libtool
2273 {
2274 return unless var ('LIBTOOL');
2276 # Libtool requires some files, but only at top level.
2277 # (Starting with Libtool 2.0 we do not have to bother. These
2278 # requirements are done with AC_REQUIRE_AUX_FILE.)
2279 require_conf_file_with_macro (TRUE, 'LIBTOOL', FOREIGN, @libtool_files)
2280 if $relative_dir eq '.' && ! $libtool_new_api;
2282 my @libtool_rms;
2283 foreach my $item (sort keys %libtool_clean_directories)
2284 {
2285 my $dir = ($item eq '.') ? '' : "$item/";
2286 # .libs is for Unix, _libs for DOS.
2287 push (@libtool_rms, "\t-rm -rf ${dir}.libs ${dir}_libs");
2288 }
2290 check_user_variables 'LIBTOOLFLAGS';
2292 # Output the libtool compilation rules.
2293 $output_rules .= &file_contents ('libtool',
2294 new Automake::Location,
2295 LTRMS => join ("\n", @libtool_rms));
2296 }
2298 # handle_programs ()
2299 # ------------------
2300 # Handle C programs.
2301 sub handle_programs
2302 {
2303 my @proglist = &am_install_var ('progs', 'PROGRAMS',
2304 'bin', 'sbin', 'libexec', 'pkglib',
2305 'noinst', 'check');
2306 return if ! @proglist;
2308 my $seen_global_libobjs =
2309 var ('LDADD') && &handle_lib_objects ('', 'LDADD');
2311 foreach my $pair (@proglist)
2312 {
2313 my ($where, $one_file) = @$pair;
2315 my $seen_libobjs = 0;
2316 my $obj = get_object_extension '.$(OBJEXT)';
2318 # Strip any $(EXEEXT) suffix the user might have added, or this
2319 # will confuse &handle_source_transform and &check_canonical_spelling.
2320 # We'll add $(EXEEXT) back later anyway.
2321 $one_file =~ s/\$\(EXEEXT\)$//;
2323 # Canonicalize names and check for misspellings.
2324 my $xname = &check_canonical_spelling ($one_file, '_LDADD', '_LDFLAGS',
2325 '_SOURCES', '_OBJECTS',
2326 '_DEPENDENCIES');
2328 $where->push_context ("while processing program `$one_file'");
2329 $where->set (INTERNAL->get);
2331 my $linker = &handle_source_transform ($xname, $one_file, $obj, $where,
2332 NONLIBTOOL => 1, LIBTOOL => 0);
2334 if (var ($xname . "_LDADD"))
2335 {
2336 $seen_libobjs = &handle_lib_objects ($xname, $xname . '_LDADD');
2337 }
2338 else
2339 {
2340 # User didn't define prog_LDADD override. So do it.
2341 &define_variable ($xname . '_LDADD', '$(LDADD)', $where);
2343 # This does a bit too much work. But we need it to
2344 # generate _DEPENDENCIES when appropriate.
2345 if (var ('LDADD'))
2346 {
2347 $seen_libobjs = &handle_lib_objects ($xname, 'LDADD');
2348 }
2349 }
2351 reject_var ($xname . '_LIBADD',
2352 "use `${xname}_LDADD', not `${xname}_LIBADD'");
2354 set_seen ($xname . '_DEPENDENCIES');
2355 set_seen ($xname . '_LDFLAGS');
2357 # Determine program to use for link.
2358 my $xlink = &define_per_target_linker_variable ($linker, $xname);
2360 # If the resulting program lies into a subdirectory,
2361 # make sure this directory will exist.
2362 my $dirstamp = require_build_directory_maybe ($one_file);
2364 $output_rules .= &file_contents ('program',
2365 $where,
2366 PROGRAM => $one_file,
2367 XPROGRAM => $xname,
2368 XLINK => $xlink,
2369 DIRSTAMP => $dirstamp,
2370 EXEEXT => '$(EXEEXT)');
2372 if ($seen_libobjs || $seen_global_libobjs)
2373 {
2374 if (var ($xname . '_LDADD'))
2375 {
2376 &check_libobjs_sources ($xname, $xname . '_LDADD');
2377 }
2378 elsif (var ('LDADD'))
2379 {
2380 &check_libobjs_sources ($xname, 'LDADD');
2381 }
2382 }
2383 }
2384 }
2387 # handle_libraries ()
2388 # -------------------
2389 # Handle libraries.
2390 sub handle_libraries
2391 {
2392 my @liblist = &am_install_var ('libs', 'LIBRARIES',
2393 'lib', 'pkglib', 'noinst', 'check');
2394 return if ! @liblist;
2396 my @prefix = am_primary_prefixes ('LIBRARIES', 0, 'lib', 'pkglib',
2397 'noinst', 'check');
2399 if (@prefix)
2400 {
2401 my $var = rvar ($prefix[0] . '_LIBRARIES');
2402 $var->requires_variables ('library used', 'RANLIB');
2403 }
2405 &define_variable ('AR', 'ar', INTERNAL);
2406 &define_variable ('ARFLAGS', 'cru', INTERNAL);
2408 foreach my $pair (@liblist)
2409 {
2410 my ($where, $onelib) = @$pair;
2412 my $seen_libobjs = 0;
2413 # Check that the library fits the standard naming convention.
2414 my $bn = basename ($onelib);
2415 if ($bn !~ /^lib.*\.a$/)
2416 {
2417 $bn =~ s/^(?:lib)?(.*?)(?:\.[^.]*)?$/lib$1.a/;
2418 my $suggestion = dirname ($onelib) . "/$bn";
2419 $suggestion =~ s|^\./||g;
2420 msg ('error-gnu/warn', $where,
2421 "`$onelib' is not a standard library name\n"
2422 . "did you mean `$suggestion'?")
2423 }
2425 $where->push_context ("while processing library `$onelib'");
2426 $where->set (INTERNAL->get);
2428 my $obj = get_object_extension '.$(OBJEXT)';
2430 # Canonicalize names and check for misspellings.
2431 my $xlib = &check_canonical_spelling ($onelib, '_LIBADD', '_SOURCES',
2432 '_OBJECTS', '_DEPENDENCIES',
2433 '_AR');
2435 if (! var ($xlib . '_AR'))
2436 {
2437 &define_variable ($xlib . '_AR', '$(AR) $(ARFLAGS)', $where);
2438 }
2440 # Generate support for conditional object inclusion in
2441 # libraries.
2442 if (var ($xlib . '_LIBADD'))
2443 {
2444 if (&handle_lib_objects ($xlib, $xlib . '_LIBADD'))
2445 {
2446 $seen_libobjs = 1;
2447 }
2448 }
2449 else
2450 {
2451 &define_variable ($xlib . "_LIBADD", '', $where);
2452 }
2454 reject_var ($xlib . '_LDADD',
2455 "use `${xlib}_LIBADD', not `${xlib}_LDADD'");
2457 # Make sure we at look at this.
2458 set_seen ($xlib . '_DEPENDENCIES');
2460 &handle_source_transform ($xlib, $onelib, $obj, $where,
2461 NONLIBTOOL => 1, LIBTOOL => 0);
2463 # If the resulting library lies into a subdirectory,
2464 # make sure this directory will exist.
2465 my $dirstamp = require_build_directory_maybe ($onelib);
2467 $output_rules .= &file_contents ('library',
2468 $where,
2469 LIBRARY => $onelib,
2470 XLIBRARY => $xlib,
2471 DIRSTAMP => $dirstamp);
2473 if ($seen_libobjs)
2474 {
2475 if (var ($xlib . '_LIBADD'))
2476 {
2477 &check_libobjs_sources ($xlib, $xlib . '_LIBADD');
2478 }
2479 }
2480 }
2481 }
2484 # handle_ltlibraries ()
2485 # ---------------------
2486 # Handle shared libraries.
2487 sub handle_ltlibraries
2488 {
2489 my @liblist = &am_install_var ('ltlib', 'LTLIBRARIES',
2490 'noinst', 'lib', 'pkglib', 'check');
2491 return if ! @liblist;
2493 my @prefix = am_primary_prefixes ('LTLIBRARIES', 0, 'lib', 'pkglib',
2494 'noinst', 'check');
2496 if (@prefix)
2497 {
2498 my $var = rvar ($prefix[0] . '_LTLIBRARIES');
2499 $var->requires_variables ('Libtool library used', 'LIBTOOL');
2500 }
2502 my %instdirs = ();
2503 my %instconds = ();
2504 my %liblocations = (); # Location (in Makefile.am) of each library.
2506 foreach my $key (@prefix)
2507 {
2508 # Get the installation directory of each library.
2509 (my $dir = $key) =~ s/^nobase_//;
2510 my $var = rvar ($key . '_LTLIBRARIES');
2512 # We reject libraries which are installed in several places
2513 # in the same condition, because we can only specify one
2514 # `-rpath' option.
2515 $var->traverse_recursively
2516 (sub
2517 {
2518 my ($var, $val, $cond, $full_cond) = @_;
2519 my $hcond = $full_cond->human;
2520 my $where = $var->rdef ($cond)->location;
2521 # A library cannot be installed in different directory
2522 # in overlapping conditions.
2523 if (exists $instconds{$val})
2524 {
2525 my ($msg, $acond) =
2526 $instconds{$val}->ambiguous_p ($val, $full_cond);
2528 if ($msg)
2529 {
2530 error ($where, $msg, partial => 1);
2532 my $dirtxt = "installed in `$dir'";
2533 $dirtxt = "built for `$dir'"
2534 if $dir eq 'EXTRA' || $dir eq 'noinst' || $dir eq 'check';
2535 my $dircond =
2536 $full_cond->true ? "" : " in condition $hcond";
2538 error ($where, "`$val' should be $dirtxt$dircond ...",
2539 partial => 1);
2541 my $hacond = $acond->human;
2542 my $adir = $instdirs{$val}{$acond};
2543 my $adirtxt = "installed in `$adir'";
2544 $adirtxt = "built for `$adir'"
2545 if ($adir eq 'EXTRA' || $adir eq 'noinst'
2546 || $adir eq 'check');
2547 my $adircond = $acond->true ? "" : " in condition $hacond";
2549 my $onlyone = ($dir ne $adir) ?
2550 ("\nLibtool libraries can be built for only one "
2551 . "destination.") : "";
2553 error ($liblocations{$val}{$acond},
2554 "... and should also be $adirtxt$adircond.$onlyone");
2555 return;
2556 }
2557 }
2558 else
2559 {
2560 $instconds{$val} = new Automake::DisjConditions;
2561 }
2562 $instdirs{$val}{$full_cond} = $dir;
2563 $liblocations{$val}{$full_cond} = $where;
2564 $instconds{$val} = $instconds{$val}->merge ($full_cond);
2565 },
2566 sub
2567 {
2568 return ();
2569 },
2570 skip_ac_subst => 1);
2571 }
2573 foreach my $pair (@liblist)
2574 {
2575 my ($where, $onelib) = @$pair;
2577 my $seen_libobjs = 0;
2578 my $obj = get_object_extension '.lo';
2580 # Canonicalize names and check for misspellings.
2581 my $xlib = &check_canonical_spelling ($onelib, '_LIBADD', '_LDFLAGS',
2582 '_SOURCES', '_OBJECTS',
2583 '_DEPENDENCIES');
2585 # Check that the library fits the standard naming convention.
2586 my $libname_rx = '^lib.*\.la';
2587 my $ldvar = var ("${xlib}_LDFLAGS") || var ('AM_LDFLAGS');
2588 my $ldvar2 = var ('LDFLAGS');
2589 if (($ldvar && grep (/-module/, $ldvar->value_as_list_recursive))
2590 || ($ldvar2 && grep (/-module/, $ldvar2->value_as_list_recursive)))
2591 {
2592 # Relax name checking for libtool modules.
2593 $libname_rx = '\.la';
2594 }
2596 my $bn = basename ($onelib);
2597 if ($bn !~ /$libname_rx$/)
2598 {
2599 my $type = 'library';
2600 if ($libname_rx eq '\.la')
2601 {
2602 $bn =~ s/^(lib|)(.*?)(?:\.[^.]*)?$/$1$2.la/;
2603 $type = 'module';
2604 }
2605 else
2606 {
2607 $bn =~ s/^(?:lib)?(.*?)(?:\.[^.]*)?$/lib$1.la/;
2608 }
2609 my $suggestion = dirname ($onelib) . "/$bn";
2610 $suggestion =~ s|^\./||g;
2611 msg ('error-gnu/warn', $where,
2612 "`$onelib' is not a standard libtool $type name\n"
2613 . "did you mean `$suggestion'?")
2614 }
2616 $where->push_context ("while processing Libtool library `$onelib'");
2617 $where->set (INTERNAL->get);
2619 # Make sure we look at these.
2620 set_seen ($xlib . '_LDFLAGS');
2621 set_seen ($xlib . '_DEPENDENCIES');
2623 # Generate support for conditional object inclusion in
2624 # libraries.
2625 if (var ($xlib . '_LIBADD'))
2626 {
2627 if (&handle_lib_objects ($xlib, $xlib . '_LIBADD'))
2628 {
2629 $seen_libobjs = 1;
2630 }
2631 }
2632 else
2633 {
2634 &define_variable ($xlib . "_LIBADD", '', $where);
2635 }
2637 reject_var ("${xlib}_LDADD",
2638 "use `${xlib}_LIBADD', not `${xlib}_LDADD'");
2641 my $linker = &handle_source_transform ($xlib, $onelib, $obj, $where,
2642 NONLIBTOOL => 0, LIBTOOL => 1);
2644 # Determine program to use for link.
2645 my $xlink = &define_per_target_linker_variable ($linker, $xlib);
2647 my $rpathvar = "am_${xlib}_rpath";
2648 my $rpath = "\$($rpathvar)";
2649 foreach my $rcond ($instconds{$onelib}->conds)
2650 {
2651 my $val;
2652 if ($instdirs{$onelib}{$rcond} eq 'EXTRA'
2653 || $instdirs{$onelib}{$rcond} eq 'noinst'
2654 || $instdirs{$onelib}{$rcond} eq 'check')
2655 {
2656 # It's an EXTRA_ library, so we can't specify -rpath,
2657 # because we don't know where the library will end up.
2658 # The user probably knows, but generally speaking automake
2659 # doesn't -- and in fact configure could decide
2660 # dynamically between two different locations.
2661 $val = '';
2662 }
2663 else
2664 {
2665 $val = ('-rpath $(' . $instdirs{$onelib}{$rcond} . 'dir)');
2666 }
2667 if ($rcond->true)
2668 {
2669 # If $rcond is true there is only one condition and
2670 # there is no point defining an helper variable.
2671 $rpath = $val;
2672 }
2673 else
2674 {
2675 define_pretty_variable ($rpathvar, $rcond, INTERNAL, $val);
2676 }
2677 }
2679 # If the resulting library lies into a subdirectory,
2680 # make sure this directory will exist.
2681 my $dirstamp = require_build_directory_maybe ($onelib);
2683 # Remember to cleanup .libs/ in this directory.
2684 my $dirname = dirname $onelib;
2685 $libtool_clean_directories{$dirname} = 1;
2687 $output_rules .= &file_contents ('ltlibrary',
2688 $where,
2689 LTLIBRARY => $onelib,
2690 XLTLIBRARY => $xlib,
2691 RPATH => $rpath,
2692 XLINK => $xlink,
2693 DIRSTAMP => $dirstamp);
2694 if ($seen_libobjs)
2695 {
2696 if (var ($xlib . '_LIBADD'))
2697 {
2698 &check_libobjs_sources ($xlib, $xlib . '_LIBADD');
2699 }
2700 }
2701 }
2702 }
2704 # See if any _SOURCES variable were misspelled.
2705 sub check_typos ()
2706 {
2707 # It is ok if the user sets this particular variable.
2708 set_seen 'AM_LDFLAGS';
2710 foreach my $primary ('SOURCES', 'LIBADD', 'LDADD', 'LDFLAGS', 'DEPENDENCIES')
2711 {
2712 foreach my $var (variables $primary)
2713 {
2714 my $varname = $var->name;
2715 # A configure variable is always legitimate.
2716 next if exists $configure_vars{$varname};
2718 for my $cond ($var->conditions->conds)
2719 {
2720 $varname =~ /^(?:nobase_)?(?:dist_|nodist_)?(.*)_[[:alnum:]]+$/;
2721 msg_var ('syntax', $var, "variable `$varname' is defined but no"
2722 . " program or\nlibrary has `$1' as canonic name"
2723 . " (possible typo)")
2724 unless $var->rdef ($cond)->seen;
2725 }
2726 }
2727 }
2728 }
2731 # Handle scripts.
2732 sub handle_scripts
2733 {
2734 # NOTE we no longer automatically clean SCRIPTS, because it is
2735 # useful to sometimes distribute scripts verbatim. This happens
2736 # e.g. in Automake itself.
2737 &am_install_var ('-candist', 'scripts', 'SCRIPTS',
2738 'bin', 'sbin', 'libexec', 'pkgdata',
2739 'noinst', 'check');
2740 }
2745 ## ------------------------ ##
2746 ## Handling Texinfo files. ##
2747 ## ------------------------ ##
2749 # ($OUTFILE, $VFILE, @CLEAN_FILES)
2750 # &scan_texinfo_file ($FILENAME)
2751 # ------------------------------
2752 # $OUTFILE - name of the info file produced by $FILENAME.
2753 # $VFILE - name of the version.texi file used (undef if none).
2754 # @CLEAN_FILES - list of byproducts (indexes etc.)
2755 sub scan_texinfo_file ($)
2756 {
2757 my ($filename) = @_;
2759 # Some of the following extensions are always created, no matter
2760 # whether indexes are used or not. Other (like cps, fns, ... pgs)
2761 # are only created when they are used. We used to scan $FILENAME
2762 # for their use, but that is not enough: they could be used in
2763 # included files. We can't scan included files because we don't
2764 # know the include path. Therefore we always erase these files, no
2765 # matter whether they are used or not.
2766 #
2767 # (tmp is only created if an @macro is used and a certain e-TeX
2768 # feature is not available.)
2769 my %clean_suffixes =
2770 map { $_ => 1 } (qw(aux log toc tmp
2771 cp cps
2772 fn fns
2773 ky kys
2774 vr vrs
2775 tp tps
2776 pg pgs)); # grep 'new.*index' texinfo.tex
2778 my $texi = new Automake::XFile "< $filename";
2779 verb "reading $filename";
2781 my ($outfile, $vfile);
2782 while ($_ = $texi->getline)
2783 {
2784 if (/^\@setfilename +(\S+)/)
2785 {
2786 # Honor only the first @setfilename. (It's possible to have
2787 # more occurrences later if the manual shows examples of how
2788 # to use @setfilename...)
2789 next if $outfile;
2791 $outfile = $1;
2792 if ($outfile =~ /\.(.+)$/ && $1 ne 'info')
2793 {
2794 error ("$filename:$.",
2795 "output `$outfile' has unrecognized extension");
2796 return;
2797 }
2798 }
2799 # A "version.texi" file is actually any file whose name matches
2800 # "vers*.texi".
2801 elsif (/^\@include\s+(vers[^.]*\.texi)\s*$/)
2802 {
2803 $vfile = $1;
2804 }
2806 # Try to find new or unused indexes.
2808 # Creating a new category of index.
2809 elsif (/^\@def(code)?index (\w+)/)
2810 {
2811 $clean_suffixes{$2} = 1;
2812 $clean_suffixes{"$2s"} = 1;
2813 }
2815 # Merging an index into an another.
2816 elsif (/^\@syn(code)?index (\w+) (\w+)/)
2817 {
2818 delete $clean_suffixes{"$2s"};
2819 $clean_suffixes{"$3s"} = 1;
2820 }
2822 }
2824 if (! $outfile)
2825 {
2826 err_am "`$filename' missing \@setfilename";
2827 return;
2828 }
2830 my $infobase = basename ($filename);
2831 $infobase =~ s/\.te?xi(nfo)?$//;
2832 return ($outfile, $vfile,
2833 map { "$infobase.$_" } (sort keys %clean_suffixes));
2834 }
2837 # ($DIRSTAMP, @CLEAN_FILES)
2838 # output_texinfo_build_rules ($SOURCE, $DEST, $INSRC, @DEPENDENCIES)
2839 # ------------------------------------------------------------------
2840 # SOURCE - the source Texinfo file
2841 # DEST - the destination Info file
2842 # INSRC - wether DEST should be built in the source tree
2843 # DEPENDENCIES - known dependencies
2844 sub output_texinfo_build_rules ($$$@)
2845 {
2846 my ($source, $dest, $insrc, @deps) = @_;
2848 # Split `a.texi' into `a' and `.texi'.
2849 my ($spfx, $ssfx) = ($source =~ /^(.*?)(\.[^.]*)?$/);
2850 my ($dpfx, $dsfx) = ($dest =~ /^(.*?)(\.[^.]*)?$/);
2852 $ssfx ||= "";
2853 $dsfx ||= "";
2855 # We can output two kinds of rules: the "generic" rules use Make
2856 # suffix rules and are appropriate when $source and $dest do not lie
2857 # in a sub-directory; the "specific" rules are needed in the other
2858 # case.
2859 #
2860 # The former are output only once (this is not really apparent here,
2861 # but just remember that some logic deeper in Automake will not
2862 # output the same rule twice); while the later need to be output for
2863 # each Texinfo source.
2864 my $generic;
2865 my $makeinfoflags;
2866 my $sdir = dirname $source;
2867 if ($sdir eq '.' && dirname ($dest) eq '.')
2868 {
2869 $generic = 1;
2870 $makeinfoflags = '-I $(srcdir)';
2871 }
2872 else
2873 {
2874 $generic = 0;
2875 $makeinfoflags = "-I $sdir -I \$(srcdir)/$sdir";
2876 }
2878 # A directory can contain two kinds of info files: some built in the
2879 # source tree, and some built in the build tree. The rules are
2880 # different in each case. However we cannot output two different
2881 # set of generic rules. Because in-source builds are more usual, we
2882 # use generic rules in this case and fall back to "specific" rules
2883 # for build-dir builds. (It should not be a problem to invert this
2884 # if needed.)
2885 $generic = 0 unless $insrc;
2887 # We cannot use a suffix rule to build info files with an empty
2888 # extension. Otherwise we would output a single suffix inference
2889 # rule, with separate dependencies, as in
2890 #
2891 # .texi:
2892 # $(MAKEINFO) ...
2893 # foo.info: foo.texi
2894 #
2895 # which confuse Solaris make. (See the Autoconf manual for
2896 # details.) Therefore we use a specific rule in this case. This
2897 # applies to info files only (dvi and pdf files always have an
2898 # extension).
2899 my $generic_info = ($generic && $dsfx) ? 1 : 0;
2901 # If the resulting file lie into a subdirectory,
2902 # make sure this directory will exist.
2903 my $dirstamp = require_build_directory_maybe ($dest);
2905 my $dipfx = ($insrc ? '$(srcdir)/' : '') . $dpfx;
2907 $output_rules .= file_contents ('texibuild',
2908 new Automake::Location,
2909 DEPS => "@deps",
2910 DEST_PREFIX => $dpfx,
2911 DEST_INFO_PREFIX => $dipfx,
2912 DEST_SUFFIX => $dsfx,
2913 DIRSTAMP => $dirstamp,
2914 GENERIC => $generic,
2915 GENERIC_INFO => $generic_info,
2916 INSRC => $insrc,
2917 MAKEINFOFLAGS => $makeinfoflags,
2918 SOURCE => ($generic
2919 ? '$<' : $source),
2920 SOURCE_INFO => ($generic_info
2921 ? '$<' : $source),
2922 SOURCE_REAL => $source,
2923 SOURCE_SUFFIX => $ssfx,
2924 );
2925 return ($dirstamp, "$dpfx.dvi", "$dpfx.pdf", "$dpfx.ps", "$dpfx.html");
2926 }
2929 # $TEXICLEANS
2930 # handle_texinfo_helper ($info_texinfos)
2931 # --------------------------------------
2932 # Handle all Texinfo source; helper for handle_texinfo.
2933 sub handle_texinfo_helper ($)
2934 {
2935 my ($info_texinfos) = @_;
2936 my (@infobase, @info_deps_list, @texi_deps);
2937 my %versions;
2938 my $done = 0;
2939 my @texi_cleans;
2941 # Build a regex matching user-cleaned files.
2942 my $d = var 'DISTCLEANFILES';
2943 my $c = var 'CLEANFILES';
2944 my @f = ();
2945 push @f, $d->value_as_list_recursive (inner_expand => 1) if $d;
2946 push @f, $c->value_as_list_recursive (inner_expand => 1) if $c;
2947 @f = map { s|[^A-Za-z_0-9*\[\]\-]|\\$&|g; s|\*|[^/]*|g; $_; } @f;
2948 my $user_cleaned_files = '^(?:' . join ('|', @f) . ')$';
2950 foreach my $texi
2951 ($info_texinfos->value_as_list_recursive (inner_expand => 1))
2952 {
2953 my $infobase = $texi;
2954 $infobase =~ s/\.(txi|texinfo|texi)$//;
2956 if ($infobase eq $texi)
2957 {
2958 # FIXME: report line number.
2959 err_am "texinfo file `$texi' has unrecognized extension";
2960 next;
2961 }
2963 push @infobase, $infobase;
2965 # If 'version.texi' is referenced by input file, then include
2966 # automatic versioning capability.
2967 my ($out_file, $vtexi, @clean_files) =
2968 scan_texinfo_file ("$relative_dir/$texi")
2969 or next;
2970 push (@texi_cleans, @clean_files);
2972 # If the Texinfo source is in a subdirectory, create the
2973 # resulting info in this subdirectory. If it is in the current
2974 # directory, try hard to not prefix "./" because it breaks the
2975 # generic rules.
2976 my $outdir = dirname ($texi) . '/';
2977 $outdir = "" if $outdir eq './';
2978 $out_file = $outdir . $out_file;
2980 # Until Automake 1.6.3, .info files were built in the
2981 # source tree. This was an obstacle to the support of
2982 # non-distributed .info files, and non-distributed .texi
2983 # files.
2984 #
2985 # * Non-distributed .texi files is important in some packages
2986 # where .texi files are built at make time, probably using
2987 # other binaries built in the package itself, maybe using
2988 # tools or information found on the build host. Because
2989 # these files are not distributed they are always rebuilt
2990 # at make time; they should therefore not lie in the source
2991 # directory. One plan was to support this using
2992 # nodist_info_TEXINFOS or something similar. (Doing this
2993 # requires some sanity checks. For instance Automake should
2994 # not allow:
2995 # dist_info_TEXINFO = foo.texi
2996 # nodist_foo_TEXINFO = included.texi
2997 # because a distributed file should never depend on a
2998 # non-distributed file.)
2999 #
3000 # * If .texi files are not distributed, then .info files should
3001 # not be distributed either. There are also cases where one
3002 # want to distribute .texi files, but do not want to
3003 # distribute the .info files. For instance the Texinfo package
3004 # distributes the tool used to build these files; it would
3005 # be a waste of space to distribute them. It's not clear
3006 # which syntax we should use to indicate that .info files should
3007 # not be distributed. Akim Demaille suggested that eventually
3008 # we switch to a new syntax:
3009 # | Maybe we should take some inspiration from what's already
3010 # | done in the rest of Automake. Maybe there is too much
3011 # | syntactic sugar here, and you want
3012 # | nodist_INFO = bar.info
3013 # | dist_bar_info_SOURCES = bar.texi
3014 # | bar_texi_DEPENDENCIES = foo.texi
3015 # | with a bit of magic to have bar.info represent the whole
3016 # | bar*info set. That's a lot more verbose that the current
3017 # | situation, but it is # not new, hence the user has less
3018 # | to learn.
3019 # |
3020 # | But there is still too much room for meaningless specs:
3021 # | nodist_INFO = bar.info
3022 # | dist_bar_info_SOURCES = bar.texi
3023 # | dist_PS = bar.ps something-written-by-hand.ps
3024 # | nodist_bar_ps_SOURCES = bar.texi
3025 # | bar_texi_DEPENDENCIES = foo.texi
3026 # | here bar.texi is dist_ in line 2, and nodist_ in 4.
3027 #
3028 # Back to the point, it should be clear that in order to support
3029 # non-distributed .info files, we need to build them in the
3030 # build tree, not in the source tree (non-distributed .texi
3031 # files are less of a problem, because we do not output build
3032 # rules for them). In Automake 1.7 .info build rules have been
3033 # largely cleaned up so that .info files get always build in the
3034 # build tree, even when distributed. The idea was that
3035 # (1) if during a VPATH build the .info file was found to be
3036 # absent or out-of-date (in the source tree or in the
3037 # build tree), Make would rebuild it in the build tree.
3038 # If an up-to-date source-tree of the .info file existed,
3039 # make would not rebuild it in the build tree.
3040 # (2) having two copies of .info files, one in the source tree
3041 # and one (newer) in the build tree is not a problem
3042 # because `make dist' always pick files in the build tree
3043 # first.
3044 # However it turned out the be a bad idea for several reasons:
3045 # * Tru64, OpenBSD, and FreeBSD (not NetBSD) Make do not behave
3046 # like GNU Make on point (1) above. These implementations
3047 # of Make would always rebuild .info files in the build
3048 # tree, even if such files were up to date in the source
3049 # tree. Consequently, it was impossible to perform a VPATH
3050 # build of a package containing Texinfo files using these
3051 # Make implementations.
3052 # (Refer to the Autoconf Manual, section "Limitation of
3053 # Make", paragraph "VPATH", item "target lookup", for
3054 # an account of the differences between these
3055 # implementations.)
3056 # * The GNU Coding Standards require these files to be built
3057 # in the source-tree (when they are distributed, that is).
3058 # * Keeping a fresher copy of distributed files in the
3059 # build tree can be annoying during development because
3060 # - if the files is kept under CVS, you really want it
3061 # to be updated in the source tree
3062 # - it is confusing that `make distclean' does not erase
3063 # all files in the build tree.
3064 #
3065 # Consequently, starting with Automake 1.8, .info files are
3066 # built in the source tree again. Because we still plan to
3067 # support non-distributed .info files at some point, we
3068 # have a single variable ($INSRC) that controls whether
3069 # the current .info file must be built in the source tree
3070 # or in the build tree. Actually this variable is switched
3071 # off for .info files that appear to be cleaned; this is
3072 # for backward compatibility with package such as Texinfo,
3073 # which do things like
3074 # info_TEXINFOS = texinfo.txi info-stnd.texi info.texi
3075 # DISTCLEANFILES = texinfo texinfo-* info*.info*
3076 # # Do not create info files for distribution.
3077 # dist-info:
3078 # in order not to distribute .info files.
3079 my $insrc = ($out_file =~ $user_cleaned_files) ? 0 : 1;
3081 my $soutdir = '$(srcdir)/' . $outdir;
3082 $outdir = $soutdir if $insrc;
3084 # If user specified file_TEXINFOS, then use that as explicit
3085 # dependency list.
3086 @texi_deps = ();
3087 push (@texi_deps, "$soutdir$vtexi") if $vtexi;
3089 my $canonical = canonicalize ($infobase);
3090 if (var ($canonical . "_TEXINFOS"))
3091 {
3092 push (@texi_deps, '$(' . $canonical . '_TEXINFOS)');
3093 push_dist_common ('$(' . $canonical . '_TEXINFOS)');
3094 }
3096 my ($dirstamp, @cfiles) =
3097 output_texinfo_build_rules ($texi, $out_file, $insrc, @texi_deps);
3098 push (@texi_cleans, @cfiles);
3100 push (@info_deps_list, $out_file);
3102 # If a vers*.texi file is needed, emit the rule.
3103 if ($vtexi)
3104 {
3105 err_am ("`$vtexi', included in `$texi', "
3106 . "also included in `$versions{$vtexi}'")
3107 if defined $versions{$vtexi};
3108 $versions{$vtexi} = $texi;
3110 # We number the stamp-vti files. This is doable since the
3111 # actual names don't matter much. We only number starting
3112 # with the second one, so that the common case looks nice.
3113 my $vti = ($done ? $done : 'vti');
3114 ++$done;
3116 # This is ugly, but it is our historical practice.
3117 if ($config_aux_dir_set_in_configure_ac)
3118 {
3119 require_conf_file_with_macro (TRUE, 'info_TEXINFOS', FOREIGN,
3120 'mdate-sh');
3121 }
3122 else
3123 {
3124 require_file_with_macro (TRUE, 'info_TEXINFOS',
3125 FOREIGN, 'mdate-sh');
3126 }
3128 my $conf_dir;
3129 if ($config_aux_dir_set_in_configure_ac)
3130 {
3131 $conf_dir = "$am_config_aux_dir/";
3132 }
3133 else
3134 {
3135 $conf_dir = '$(srcdir)/';
3136 }
3137 $output_rules .= file_contents ('texi-vers',
3138 new Automake::Location,
3139 TEXI => $texi,
3140 VTI => $vti,
3141 STAMPVTI => "${soutdir}stamp-$vti",
3142 VTEXI => "$soutdir$vtexi",
3143 MDDIR => $conf_dir,
3144 DIRSTAMP => $dirstamp);
3145 }
3146 }
3148 # Handle location of texinfo.tex.
3149 my $need_texi_file = 0;
3150 my $texinfodir;
3151 if (var ('TEXINFO_TEX'))
3152 {
3153 # The user defined TEXINFO_TEX so assume he knows what he is
3154 # doing.
3155 $texinfodir = ('$(srcdir)/'
3156 . dirname (variable_value ('TEXINFO_TEX')));
3157 }
3158 elsif (option 'cygnus')
3159 {
3160 $texinfodir = '$(top_srcdir)/../texinfo';
3161 define_variable ('TEXINFO_TEX', "$texinfodir/texinfo.tex", INTERNAL);
3162 }
3163 elsif ($config_aux_dir_set_in_configure_ac)
3164 {
3165 $texinfodir = $am_config_aux_dir;
3166 define_variable ('TEXINFO_TEX', "$texinfodir/texinfo.tex", INTERNAL);
3167 $need_texi_file = 2; # so that we require_conf_file later
3168 }
3169 else
3170 {
3171 $texinfodir = '$(srcdir)';
3172 $need_texi_file = 1;
3173 }
3174 define_variable ('am__TEXINFO_TEX_DIR', $texinfodir, INTERNAL);
3176 push (@dist_targets, 'dist-info');
3178 if (! option 'no-installinfo')
3179 {
3180 # Make sure documentation is made and installed first. Use
3181 # $(INFO_DEPS), not 'info', because otherwise recursive makes
3182 # get run twice during "make all".
3183 unshift (@all, '$(INFO_DEPS)');
3184 }
3186 define_files_variable ("DVIS", @infobase, 'dvi', INTERNAL);
3187 define_files_variable ("PDFS", @infobase, 'pdf', INTERNAL);
3188 define_files_variable ("PSS", @infobase, 'ps', INTERNAL);
3189 define_files_variable ("HTMLS", @infobase, 'html', INTERNAL);
3191 # This next isn't strictly needed now -- the places that look here
3192 # could easily be changed to look in info_TEXINFOS. But this is
3193 # probably better, in case noinst_TEXINFOS is ever supported.
3194 define_variable ("TEXINFOS", variable_value ('info_TEXINFOS'), INTERNAL);
3196 # Do some error checking. Note that this file is not required
3197 # when in Cygnus mode; instead we defined TEXINFO_TEX explicitly
3198 # up above.
3199 if ($need_texi_file && ! option 'no-texinfo.tex')
3200 {
3201 if ($need_texi_file > 1)
3202 {
3203 require_conf_file_with_macro (TRUE, 'info_TEXINFOS', FOREIGN,
3204 'texinfo.tex');
3205 }
3206 else
3207 {
3208 require_file_with_macro (TRUE, 'info_TEXINFOS', FOREIGN,
3209 'texinfo.tex');
3210 }
3211 }
3213 return makefile_wrap ("", "\t ", @texi_cleans);
3214 }
3217 # handle_texinfo ()
3218 # -----------------
3219 # Handle all Texinfo source.
3220 sub handle_texinfo ()
3221 {
3222 reject_var 'TEXINFOS', "`TEXINFOS' is an anachronism; use `info_TEXINFOS'";
3223 # FIXME: I think this is an obsolete future feature name.
3224 reject_var 'html_TEXINFOS', "HTML generation not yet supported";
3226 my $info_texinfos = var ('info_TEXINFOS');
3227 my $texiclean = "";
3228 if ($info_texinfos)
3229 {
3230 $texiclean = handle_texinfo_helper ($info_texinfos);
3231 }
3232 $output_rules .= file_contents ('texinfos',
3233 new Automake::Location,
3234 TEXICLEAN => $texiclean,
3235 'LOCAL-TEXIS' => !!$info_texinfos);
3236 }
3239 # Handle any man pages.
3240 sub handle_man_pages
3241 {
3242 reject_var 'MANS', "`MANS' is an anachronism; use `man_MANS'";
3244 # Find all the sections in use. We do this by first looking for
3245 # "standard" sections, and then looking for any additional
3246 # sections used in man_MANS.
3247 my (%sections, %vlist);
3248 # We handle nodist_ for uniformity. man pages aren't distributed
3249 # by default so it isn't actually very important.
3250 foreach my $pfx ('', 'dist_', 'nodist_')
3251 {
3252 # Add more sections as needed.
3253 foreach my $section ('0'..'9', 'n', 'l')
3254 {
3255 my $varname = $pfx . 'man' . $section . '_MANS';
3256 if (var ($varname))
3257 {
3258 $sections{$section} = 1;
3259 $varname = '$(' . $varname . ')';
3260 $vlist{$varname} = 1;
3262 &push_dist_common ($varname)
3263 if $pfx eq 'dist_';
3264 }
3265 }
3267 my $varname = $pfx . 'man_MANS';
3268 my $var = var ($varname);
3269 if ($var)
3270 {
3271 foreach ($var->value_as_list_recursive)
3272 {
3273 # A page like `foo.1c' goes into man1dir.
3274 if (/\.([0-9a-z])([a-z]*)$/)
3275 {
3276 $sections{$1} = 1;
3277 }
3278 }
3280 $varname = '$(' . $varname . ')';
3281 $vlist{$varname} = 1;
3282 &push_dist_common ($varname)
3283 if $pfx eq 'dist_';
3284 }
3285 }
3287 return unless %sections;
3289 # Now for each section, generate an install and uninstall rule.
3290 # Sort sections so output is deterministic.
3291 foreach my $section (sort keys %sections)
3292 {
3293 $output_rules .= &file_contents ('mans',
3294 new Automake::Location,
3295 SECTION => $section);
3296 }
3298 my @mans = sort keys %vlist;
3299 $output_vars .= file_contents ('mans-vars',
3300 new Automake::Location,
3301 MANS => "@mans");
3303 push (@all, '$(MANS)')
3304 unless option 'no-installman';
3305 }
3307 # Handle DATA variables.
3308 sub handle_data
3309 {
3310 &am_install_var ('-noextra', '-candist', 'data', 'DATA',
3311 'data', 'dataroot', 'dvi', 'html', 'pdf', 'ps',
3312 'sysconf', 'sharedstate', 'localstate',
3313 'pkgdata', 'lisp', 'noinst', 'check');
3314 }
3316 # Handle TAGS.
3317 sub handle_tags
3318 {
3319 my @tag_deps = ();
3320 my @ctag_deps = ();
3321 if (var ('SUBDIRS'))
3322 {
3323 $output_rules .= ("tags-recursive:\n"
3324 . "\tlist=\'\$(SUBDIRS)\'; for subdir in \$\$list; do \\\n"
3325 # Never fail here if a subdir fails; it
3326 # isn't important.
3327 . "\t test \"\$\$subdir\" = . || (cd \$\$subdir"
3328 . " && \$(MAKE) \$(AM_MAKEFLAGS) tags); \\\n"
3329 . "\tdone\n");
3330 push (@tag_deps, 'tags-recursive');
3331 &depend ('.PHONY', 'tags-recursive');
3333 $output_rules .= ("ctags-recursive:\n"
3334 . "\tlist=\'\$(SUBDIRS)\'; for subdir in \$\$list; do \\\n"
3335 # Never fail here if a subdir fails; it
3336 # isn't important.
3337 . "\t test \"\$\$subdir\" = . || (cd \$\$subdir"
3338 . " && \$(MAKE) \$(AM_MAKEFLAGS) ctags); \\\n"
3339 . "\tdone\n");
3340 push (@ctag_deps, 'ctags-recursive');
3341 &depend ('.PHONY', 'ctags-recursive');
3342 }
3344 if (&saw_sources_p (1)
3345 || var ('ETAGS_ARGS')
3346 || @tag_deps)
3347 {
3348 my @config;
3349 foreach my $spec (@config_headers)
3350 {
3351 my ($out, @ins) = split_config_file_spec ($spec);
3352 foreach my $in (@ins)
3353 {
3354 # If the config header source is in this directory,
3355 # require it.
3356 push @config, basename ($in)
3357 if $relative_dir eq dirname ($in);
3358 }
3359 }
3360 $output_rules .= &file_contents ('tags',
3361 new Automake::Location,
3362 CONFIG => "@config",
3363 TAGSDIRS => "@tag_deps",
3364 CTAGSDIRS => "@ctag_deps");
3366 set_seen 'TAGS_DEPENDENCIES';
3367 }
3368 elsif (reject_var ('TAGS_DEPENDENCIES',
3369 "doesn't make sense to define `TAGS_DEPENDENCIES'"
3370 . "without\nsources or `ETAGS_ARGS'"))
3371 {
3372 }
3373 else
3374 {
3375 # Every Makefile must define some sort of TAGS rule.
3376 # Otherwise, it would be possible for a top-level "make TAGS"
3377 # to fail because some subdirectory failed.
3378 $output_rules .= "tags: TAGS\nTAGS:\n\n";
3379 # Ditto ctags.
3380 $output_rules .= "ctags: CTAGS\nCTAGS:\n\n";
3381 }
3382 }
3384 # Handle multilib support.
3385 sub handle_multilib
3386 {
3387 if ($seen_multilib && $relative_dir eq '.')
3388 {
3389 $output_rules .= &file_contents ('multilib', new Automake::Location);
3390 push (@all, 'all-multi');
3391 }
3392 }
3395 # user_phony_rule ($NAME)
3396 # -----------------------
3397 # Return false if rule $NAME does not exist. Otherwise,
3398 # declare it as phony, complete its definition (in case it is
3399 # conditional), and return its Automake::Rule instance.
3400 sub user_phony_rule ($)
3401 {
3402 my ($name) = @_;
3403 my $rule = rule $name;
3404 if ($rule)
3405 {
3406 depend ('.PHONY', $name);
3407 # Define $NAME in all condition where it is not already defined,
3408 # so that it is always OK to depend on $NAME.
3409 for my $c ($rule->not_always_defined_in_cond (TRUE)->conds)
3410 {
3411 Automake::Rule::define ($name, 'internal', RULE_AUTOMAKE,
3412 $c, INTERNAL);
3413 $output_rules .= $c->subst_string . "$name:\n";
3414 }
3415 }
3416 return $rule;
3417 }
3420 # $BOOLEAN
3421 # &for_dist_common ($A, $B)
3422 # -------------------------
3423 # Subroutine for &handle_dist: sort files to dist.
3424 #
3425 # We put README first because it then becomes easier to make a
3426 # Usenet-compliant shar file (in these, README must be first).
3427 #
3428 # FIXME: do more ordering of files here.
3429 sub for_dist_common
3430 {
3431 return 0
3432 if $a eq $b;
3433 return -1
3434 if $a eq 'README';
3435 return 1
3436 if $b eq 'README';
3437 return $a cmp $b;
3438 }
3441 # handle_dist
3442 # -----------
3443 # Handle 'dist' target.
3444 sub handle_dist ()
3445 {
3446 # Substutions for distdit.am
3447 my %transform;
3449 # Define DIST_SUBDIRS. This must always be done, regardless of the
3450 # no-dist setting: target like `distclean' or `maintainer-clean' use it.
3451 my $subdirs = var ('SUBDIRS');
3452 if ($subdirs)
3453 {
3454 # If SUBDIRS is conditionally defined, then set DIST_SUBDIRS
3455 # to all possible directories, and use it. If DIST_SUBDIRS is
3456 # defined, just use it.
3458 # Note that we check DIST_SUBDIRS first on purpose, so that
3459 # we don't call has_conditional_contents for now reason.
3460 # (In the past one project used so many conditional subdirectories
3461 # that calling has_conditional_contents on SUBDIRS caused
3462 # automake to grow to 150Mb -- this should not happen with
3463 # the current implementation of has_conditional_contents,
3464 # but it's more efficient to avoid the call anyway.)
3465 if (var ('DIST_SUBDIRS'))
3466 {
3467 }
3468 elsif ($subdirs->has_conditional_contents)
3469 {
3470 define_pretty_variable
3471 ('DIST_SUBDIRS', TRUE, INTERNAL,
3472 uniq ($subdirs->value_as_list_recursive));
3473 }
3474 else
3475 {
3476 # We always define this because that is what `distclean'
3477 # wants.
3478 define_pretty_variable ('DIST_SUBDIRS', TRUE, INTERNAL,
3479 '$(SUBDIRS)');
3480 }
3481 }
3483 # The remaining definitions are only required when a dist target is used.
3484 return if option 'no-dist';
3486 # At least one of the archive formats must be enabled.
3487 if ($relative_dir eq '.')
3488 {
3489 my $archive_defined = option 'no-dist-gzip' ? 0 : 1;
3490 $archive_defined ||=
3491 grep { option "dist-$_" } ('shar', 'zip', 'tarZ', 'bzip2');
3492 error (option 'no-dist-gzip',
3493 "no-dist-gzip specified but no dist-* specified, "
3494 . "at least one archive format must be enabled")
3495 unless $archive_defined;
3496 }
3498 # Look for common files that should be included in distribution.
3499 # If the aux dir is set, and it does not have a Makefile.am, then
3500 # we check for these files there as well.
3501 my $check_aux = 0;
3502 if ($relative_dir eq '.'
3503 && $config_aux_dir_set_in_configure_ac)
3504 {
3505 if (! &is_make_dir ($config_aux_dir))
3506 {
3507 $check_aux = 1;
3508 }
3509 }
3510 foreach my $cfile (@common_files)
3511 {
3512 if (dir_has_case_matching_file ($relative_dir, $cfile)
3513 # The file might be absent, but if it can be built it's ok.
3514 || rule $cfile)
3515 {
3516 &push_dist_common ($cfile);
3517 }
3519 # Don't use `elsif' here because a file might meaningfully
3520 # appear in both directories.
3521 if ($check_aux && dir_has_case_matching_file ($config_aux_dir, $cfile))
3522 {
3523 &push_dist_common ("$config_aux_dir/$cfile")
3524 }
3525 }
3527 # We might copy elements from $configure_dist_common to
3528 # %dist_common if we think we need to. If the file appears in our
3529 # directory, we would have discovered it already, so we don't
3530 # check that. But if the file is in a subdir without a Makefile,
3531 # we want to distribute it here if we are doing `.'. Ugly!
3532 if ($relative_dir eq '.')
3533 {
3534 foreach my $file (split (' ' , $configure_dist_common))
3535 {
3536 push_dist_common ($file)
3537 unless is_make_dir (dirname ($file));
3538 }
3539 }
3541 # Files to distributed. Don't use ->value_as_list_recursive
3542 # as it recursively expands `$(dist_pkgdata_DATA)' etc.
3543 my @dist_common = split (' ', rvar ('DIST_COMMON')->variable_value);
3544 @dist_common = uniq (sort for_dist_common (@dist_common));
3545 variable_delete 'DIST_COMMON';
3546 define_pretty_variable ('DIST_COMMON', TRUE, INTERNAL, @dist_common);
3548 # Now that we've processed DIST_COMMON, disallow further attempts
3549 # to set it.
3550 $handle_dist_run = 1;
3552 # Scan EXTRA_DIST to see if we need to distribute anything from a
3553 # subdir. If so, add it to the list. I didn't want to do this
3554 # originally, but there were so many requests that I finally
3555 # relented.
3556 my $extra_dist = var ('EXTRA_DIST');
3557 if ($extra_dist)
3558 {
3559 # FIXME: This should be fixed to work with conditions. That
3560 # will require only making the entries in %dist_dirs under the
3561 # appropriate condition. This is meaningful if the nature of
3562 # the distribution should depend upon the configure options
3563 # used.
3564 foreach ($extra_dist->value_as_list_recursive (skip_ac_subst => 1))
3565 {
3566 next unless s,/+[^/]+$,,;
3567 $dist_dirs{$_} = 1
3568 unless $_ eq '.';
3569 }
3570 }
3572 # We have to check DIST_COMMON for extra directories in case the
3573 # user put a source used in AC_OUTPUT into a subdir.
3574 my $topsrcdir = backname ($relative_dir);
3575 foreach (rvar ('DIST_COMMON')->value_as_list_recursive (skip_ac_subst => 1))
3576 {
3577 s/\$\(top_srcdir\)/$topsrcdir/;
3578 s/\$\(srcdir\)/./;
3579 # Strip any leading `./'.
3580 s,^(:?\./+)*,,;
3581 next unless s,/+[^/]+$,,;
3582 $dist_dirs{$_} = 1
3583 unless $_ eq '.';
3584 }
3586 $transform{'DISTCHECK-HOOK'} = !! rule 'distcheck-hook';
3587 $transform{'GETTEXT'} = $seen_gettext && !$seen_gettext_external;
3589 # Prepend $(distdir) to each directory given.
3590 my %rewritten = map { '$(distdir)/' . "$_" => 1 } keys %dist_dirs;
3591 $transform{'DISTDIRS'} = join (' ', sort keys %rewritten);
3593 # If the target `dist-hook' exists, make sure it is run. This
3594 # allows users to do random weird things to the distribution
3595 # before it is packaged up.
3596 push (@dist_targets, 'dist-hook')
3597 if user_phony_rule 'dist-hook';
3598 $transform{'DIST-TARGETS'} = join (' ', @dist_targets);
3600 my $flm = option ('filename-length-max');
3601 my $filename_filter = $flm ? '.' x $flm->[1] : '';
3603 $output_rules .= &file_contents ('distdir',
3604 new Automake::Location,
3605 %transform,
3606 FILENAME_FILTER => $filename_filter);
3607 }
3610 # check_directory ($NAME, $WHERE)
3611 # -------------------------------
3612 # Ensure $NAME is a directory, and that it uses sane name.
3613 # Use $WHERE as a location in the diagnostic, if any.
3614 sub check_directory ($$)
3615 {
3616 my ($dir, $where) = @_;
3618 error $where, "required directory $relative_dir/$dir does not exist"
3619 unless -d "$relative_dir/$dir";
3621 # If an `obj/' directory exists, BSD make will enter it before
3622 # reading `Makefile'. Hence the `Makefile' in the current directory
3623 # will not be read.
3624 #
3625 # % cat Makefile
3626 # all:
3627 # echo Hello
3628 # % cat obj/Makefile
3629 # all:
3630 # echo World
3631 # % make # GNU make
3632 # echo Hello
3633 # Hello
3634 # % pmake # BSD make
3635 # echo World
3636 # World
3637 msg ('portability', $where,
3638 "naming a subdirectory `obj' causes troubles with BSD make")
3639 if $dir eq 'obj';
3641 # `aux' is probably the most important of the following forbidden name,
3642 # since it's tempting to use it as an AC_CONFIG_AUX_DIR.
3643 msg ('portability', $where,
3644 "name `$dir' is reserved on W32 and DOS platforms")
3645 if grep (/^\Q$dir\E$/i, qw/aux lpt1 lpt2 lpt3 com1 com2 com3 com4 con prn/);
3646 }
3648 # check_directories_in_var ($VARIABLE)
3649 # ------------------------------------
3650 # Recursively check all items in variables $VARIABLE as directories
3651 sub check_directories_in_var ($)
3652 {
3653 my ($var) = @_;
3654 $var->traverse_recursively
3655 (sub
3656 {
3657 my ($var, $val, $cond, $full_cond) = @_;
3658 check_directory ($val, $var->rdef ($cond)->location);
3659 return ();
3660 },
3661 undef,
3662 skip_ac_subst => 1);
3663 }
3665 # &handle_subdirs ()
3666 # ------------------
3667 # Handle subdirectories.
3668 sub handle_subdirs ()
3669 {
3670 my $subdirs = var ('SUBDIRS');
3671 return
3672 unless $subdirs;
3674 check_directories_in_var $subdirs;
3676 my $dsubdirs = var ('DIST_SUBDIRS');
3677 check_directories_in_var $dsubdirs
3678 if $dsubdirs;
3680 $output_rules .= &file_contents ('subdirs', new Automake::Location);
3681 rvar ('RECURSIVE_TARGETS')->rdef (TRUE)->{'pretty'} = VAR_SORTED; # Gross!
3682 }
3685 # ($REGEN, @DEPENDENCIES)
3686 # &scan_aclocal_m4
3687 # ----------------
3688 # If aclocal.m4 creation is automated, return the list of its dependencies.
3689 sub scan_aclocal_m4 ()
3690 {
3691 my $regen_aclocal = 0;
3693 set_seen 'CONFIG_STATUS_DEPENDENCIES';
3694 set_seen 'CONFIGURE_DEPENDENCIES';
3696 if (-f 'aclocal.m4')
3697 {
3698 &define_variable ("ACLOCAL_M4", '$(top_srcdir)/aclocal.m4', INTERNAL);
3700 my $aclocal = new Automake::XFile "< aclocal.m4";
3701 my $line = $aclocal->getline;
3702 $regen_aclocal = $line =~ 'generated automatically by aclocal';
3703 }
3705 my @ac_deps = ();
3707 if (set_seen ('ACLOCAL_M4_SOURCES'))
3708 {
3709 push (@ac_deps, '$(ACLOCAL_M4_SOURCES)');
3710 msg_var ('obsolete', 'ACLOCAL_M4_SOURCES',
3711 "`ACLOCAL_M4_SOURCES' is obsolete.\n"
3712 . "It should be safe to simply remove it.");
3713 }
3715 # Note that it might be possible that aclocal.m4 doesn't exist but
3716 # should be auto-generated. This case probably isn't very
3717 # important.
3719 return ($regen_aclocal, @ac_deps);
3720 }
3723 # Helper function for substitute_ac_subst_variables.
3724 sub substitute_ac_subst_variables_worker($)
3725 {
3726 my ($token) = @_;
3727 return "\@$token\@" if var $token;
3728 return "\${$token\}";
3729 }
3731 # substitute_ac_subst_variables ($TEXT)
3732 # -------------------------------------
3733 # Replace any occurence of ${FOO} in $TEXT by @FOO@ if FOO is an AC_SUBST
3734 # variable.
3735 sub substitute_ac_subst_variables ($)
3736 {
3737 my ($text) = @_;
3738 $text =~ s/\${([^ \t=:+{}]+)}/&substitute_ac_subst_variables_worker ($1)/ge;
3739 return $text;
3740 }
3742 # @DEPENDENCIES
3743 # &prepend_srcdir (@INPUTS)
3744 # -------------------------
3745 # Prepend $(srcdir) or $(top_srcdir) to all @INPUTS. The idea is that
3746 # if an input file has a directory part the same as the current
3747 # directory, then the directory part is simply replaced by $(srcdir).
3748 # But if the directory part is different, then $(top_srcdir) is
3749 # prepended.
3750 sub prepend_srcdir (@)
3751 {
3752 my (@inputs) = @_;
3753 my @newinputs;
3755 foreach my $single (@inputs)
3756 {
3757 if (dirname ($single) eq $relative_dir)
3758 {
3759 push (@newinputs, '$(srcdir)/' . basename ($single));
3760 }
3761 else
3762 {
3763 push (@newinputs, '$(top_srcdir)/' . $single);
3764 }
3765 }
3766 return @newinputs;
3767 }
3769 # @DEPENDENCIES
3770 # rewrite_inputs_into_dependencies ($OUTPUT, @INPUTS)
3771 # ---------------------------------------------------
3772 # Compute a list of dependencies appropriate for the rebuild
3773 # rule of
3774 # AC_CONFIG_FILES($OUTPUT:$INPUT[0]:$INPUTS[1]:...)
3775 # Also distribute $INPUTs which are not build by another AC_CONFIG_FILES.
3776 sub rewrite_inputs_into_dependencies ($@)
3777 {
3778 my ($file, @inputs) = @_;
3779 my @res = ();
3781 for my $i (@inputs)
3782 {
3783 # We cannot create dependencies on shell variables.
3784 next if (substitute_ac_subst_variables $i) =~ /\$/;
3786 if (exists $ac_config_files_location{$i})
3787 {
3788 my $di = dirname $i;
3789 if ($di eq $relative_dir)
3790 {
3791 $i = basename $i;
3792 }
3793 # In the top-level Makefile we do not use $(top_builddir), because
3794 # we are already there, and since the targets are built without
3795 # a $(top_builddir), it helps BSD Make to match them with
3796 # dependencies.
3797 elsif ($relative_dir ne '.')
3798 {
3799 $i = '$(top_builddir)/' . $i;
3800 }
3801 }
3802 else
3803 {
3804 msg ('error', $ac_config_files_location{$file},
3805 "required file `$i' not found")
3806 unless $i =~ /\$/ || exists $output_files{$i} || -f $i;
3807 ($i) = prepend_srcdir ($i);
3808 push_dist_common ($i);
3809 }
3810 push @res, $i;
3811 }
3812 return @res;
3813 }
3817 # &handle_configure ($MAKEFILE_AM, $MAKEFILE_IN, $MAKEFILE, @INPUTS)
3818 # ------------------------------------------------------------------
3819 # Handle remaking and configure stuff.
3820 # We need the name of the input file, to do proper remaking rules.
3821 sub handle_configure ($$$@)
3822 {
3823 my ($makefile_am, $makefile_in, $makefile, @inputs) = @_;
3825 prog_error 'empty @inputs'
3826 unless @inputs;
3828 my ($rel_makefile_am, $rel_makefile_in) = prepend_srcdir ($makefile_am,
3829 $makefile_in);
3830 my $rel_makefile = basename $makefile;
3832 my $colon_infile = ':' . join (':', @inputs);
3833 $colon_infile = '' if $colon_infile eq ":$makefile.in";
3834 my @rewritten = rewrite_inputs_into_dependencies ($makefile, @inputs);
3835 my ($regen_aclocal_m4, @aclocal_m4_deps) = scan_aclocal_m4;
3836 define_pretty_variable ('am__aclocal_m4_deps', TRUE, INTERNAL,
3837 @configure_deps, @aclocal_m4_deps,
3838 '$(top_srcdir)/' . $configure_ac);
3839 my @configuredeps = ('$(am__aclocal_m4_deps)', '$(CONFIGURE_DEPENDENCIES)');
3840 push @configuredeps, '$(ACLOCAL_M4)' if -f 'aclocal.m4';
3841 define_pretty_variable ('am__configure_deps', TRUE, INTERNAL,
3842 @configuredeps);
3844 $output_rules .= file_contents
3845 ('configure',
3846 new Automake::Location,
3847 MAKEFILE => $rel_makefile,
3848 'MAKEFILE-DEPS' => "@rewritten",
3849 'CONFIG-MAKEFILE' => ($relative_dir eq '.') ? '$@' : '$(subdir)/$@',
3850 'MAKEFILE-IN' => $rel_makefile_in,
3851 'MAKEFILE-IN-DEPS' => "@include_stack",
3852 'MAKEFILE-AM' => $rel_makefile_am,
3853 STRICTNESS => global_option 'cygnus'
3854 ? 'cygnus' : $strictness_name,
3855 'USE-DEPS' => global_option 'no-dependencies'
3856 ? ' --ignore-deps' : '',
3857 'MAKEFILE-AM-SOURCES' => "$makefile$colon_infile",
3858 'REGEN-ACLOCAL-M4' => $regen_aclocal_m4);
3860 if ($relative_dir eq '.')
3861 {
3862 &push_dist_common ('acconfig.h')
3863 if -f 'acconfig.h';
3864 }
3866 # If we have a configure header, require it.
3867 my $hdr_index = 0;
3868 my @distclean_config;
3869 foreach my $spec (@config_headers)
3870 {
3871 $hdr_index += 1;
3872 # $CONFIG_H_PATH: config.h from top level.
3873 my ($config_h_path, @ins) = split_config_file_spec ($spec);
3874 my $config_h_dir = dirname ($config_h_path);
3876 # If the header is in the current directory we want to build
3877 # the header here. Otherwise, if we're at the topmost
3878 # directory and the header's directory doesn't have a
3879 # Makefile, then we also want to build the header.
3880 if ($relative_dir eq $config_h_dir
3881 || ($relative_dir eq '.' && ! &is_make_dir ($config_h_dir)))
3882 {
3883 my ($cn_sans_dir, $stamp_dir);
3884 if ($relative_dir eq $config_h_dir)
3885 {
3886 $cn_sans_dir = basename ($config_h_path);
3887 $stamp_dir = '';
3888 }
3889 else
3890 {
3891 $cn_sans_dir = $config_h_path;
3892 if ($config_h_dir eq '.')
3893 {
3894 $stamp_dir = '';
3895 }
3896 else
3897 {
3898 $stamp_dir = $config_h_dir . '/';
3899 }
3900 }
3902 # This will also distribute all inputs.
3903 @ins = rewrite_inputs_into_dependencies ($config_h_path, @ins);
3905 # Cannot define rebuild rules for filenames with shell variables.
3906 next if (substitute_ac_subst_variables $config_h_path) =~ /\$/;
3908 # Header defined in this directory.
3909 my @files;
3910 if (-f $config_h_path . '.top')
3911 {
3912 push (@files, "$cn_sans_dir.top");
3913 }
3914 if (-f $config_h_path . '.bot')
3915 {
3916 push (@files, "$cn_sans_dir.bot");
3917 }
3919 push_dist_common (@files);
3921 # For now, acconfig.h can only appear in the top srcdir.
3922 if (-f 'acconfig.h')
3923 {
3924 push (@files, '$(top_srcdir)/acconfig.h');
3925 }
3927 my $stamp = "${stamp_dir}stamp-h${hdr_index}";
3928 $output_rules .=
3929 file_contents ('remake-hdr',
3930 new Automake::Location,
3931 FILES => "@files",
3932 CONFIG_H => $cn_sans_dir,
3933 CONFIG_HIN => $ins[0],
3934 CONFIG_H_DEPS => "@ins",
3935 CONFIG_H_PATH => $config_h_path,
3936 STAMP => "$stamp");
3938 push @distclean_config, $cn_sans_dir, $stamp;
3939 }
3940 }
3942 $output_rules .= file_contents ('clean-hdr',
3943 new Automake::Location,
3944 FILES => "@distclean_config")
3945 if @distclean_config;
3947 # Distribute and define mkinstalldirs only if it is already present
3948 # in the package, for backward compatibility (some people may still
3949 # use $(mkinstalldirs)).
3950 my $mkidpath = "$config_aux_dir/mkinstalldirs";
3951 if (-f $mkidpath)
3952 {
3953 # Use require_file so that any existing script gets updated
3954 # by --force-missing.
3955 require_conf_file ($mkidpath, FOREIGN, 'mkinstalldirs');
3956 define_variable ('mkinstalldirs',
3957 "\$(SHELL) $am_config_aux_dir/mkinstalldirs", INTERNAL);
3958 }
3959 else
3960 {
3961 # Use $(install_sh), not $(mkdir_p) because the latter requires
3962 # at least one argument, and $(mkinstalldirs) used to work
3963 # even without arguments (e.g. $(mkinstalldirs) $(conditional_dir)).
3964 define_variable ('mkinstalldirs', '$(install_sh) -d', INTERNAL);
3965 }
3967 reject_var ('CONFIG_HEADER',
3968 "`CONFIG_HEADER' is an anachronism; now determined "
3969 . "automatically\nfrom `$configure_ac'");
3971 my @config_h;
3972 foreach my $spec (@config_headers)
3973 {
3974 my ($out, @ins) = split_config_file_spec ($spec);
3975 # Generate CONFIG_HEADER define.
3976 if ($relative_dir eq dirname ($out))
3977 {
3978 push @config_h, basename ($out);
3979 }
3980 else
3981 {
3982 push @config_h, "\$(top_builddir)/$out";
3983 }
3984 }
3985 define_variable ("CONFIG_HEADER", "@config_h", INTERNAL)
3986 if @config_h;
3988 # Now look for other files in this directory which must be remade
3989 # by config.status, and generate rules for them.
3990 my @actual_other_files = ();
3991 foreach my $lfile (@other_input_files)
3992 {
3993 my $file;
3994 my @inputs;
3995 if ($lfile =~ /^([^:]*):(.*)$/)
3996 {
3997 # This is the ":" syntax of AC_OUTPUT.
3998 $file = $1;
3999 @inputs = split (':', $2);
4000 }
4001 else
4002 {
4003 # Normal usage.
4004 $file = $lfile;
4005 @inputs = $file . '.in';
4006 }
4008 # Automake files should not be stored in here, but in %MAKE_LIST.
4009 prog_error ("$lfile in \@other_input_files\n"
4010 . "\@other_input_files = (@other_input_files)")
4011 if -f $file . '.am';
4013 my $local = basename ($file);
4015 # Make sure the dist directory for each input file is created.
4016 # We only have to do this at the topmost level though. This
4017 # is a bit ugly but it easier than spreading out the logic,
4018 # especially in cases like AC_OUTPUT(foo/out:bar/in), where
4019 # there is no Makefile in bar/.
4020 if ($relative_dir eq '.')
4021 {
4022 foreach (@inputs)
4023 {
4024 $dist_dirs{dirname ($_)} = 1;
4025 }
4026 }
4028 # We skip files that aren't in this directory. However, if
4029 # the file's directory does not have a Makefile, and we are
4030 # currently doing `.', then we create a rule to rebuild the
4031 # file in the subdir.
4032 my $fd = dirname ($file);
4033 if ($fd ne $relative_dir)
4034 {
4035 if ($relative_dir eq '.' && ! &is_make_dir ($fd))
4036 {
4037 $local = $file;
4038 }
4039 else
4040 {
4041 next;
4042 }
4043 }
4045 my @rewritten_inputs = rewrite_inputs_into_dependencies ($file, @inputs);
4047 # Cannot output rules for shell variables.
4048 next if (substitute_ac_subst_variables $local) =~ /\$/;
4050 $output_rules .= ($local . ': '
4051 . '$(top_builddir)/config.status '
4052 . "@rewritten_inputs\n"
4053 . "\t"
4054 . 'cd $(top_builddir) && '
4055 . '$(SHELL) ./config.status '
4056 . ($relative_dir eq '.' ? '' : '$(subdir)/')
4057 . '$@'
4058 . "\n");
4059 push (@actual_other_files, $local);
4060 }
4062 # For links we should clean destinations and distribute sources.
4063 foreach my $spec (@config_links)
4064 {
4065 my ($link, $file) = split /:/, $spec;
4066 # Some people do AC_CONFIG_LINKS($computed). We only handle
4067 # the DEST:SRC form.
4068 next unless $file;
4069 my $where = $ac_config_files_location{$link};
4071 # Skip destinations that contain shell variables.
4072 if ((substitute_ac_subst_variables $link) !~ /\$/)
4073 {
4074 # We skip links that aren't in this directory. However, if
4075 # the link's directory does not have a Makefile, and we are
4076 # currently doing `.', then we add the link to CONFIG_CLEAN_FILES
4077 # in `.'s Makefile.in.
4078 my $local = basename ($link);
4079 my $fd = dirname ($link);
4080 if ($fd ne $relative_dir)
4081 {
4082 if ($relative_dir eq '.' && ! &is_make_dir ($fd))
4083 {
4084 $local = $link;
4085 }
4086 else
4087 {
4088 $local = undef;
4089 }
4090 }
4091 push @actual_other_files, $local if $local;
4092 }
4094 # Do not process sources that contain shell variables.
4095 if ((substitute_ac_subst_variables $file) !~ /\$/)
4096 {
4097 my $fd = dirname ($file);
4099 # Make sure the dist directory for each input file is created.
4100 # We only have to do this at the topmost level though.
4101 if ($relative_dir eq '.')
4102 {
4103 $dist_dirs{$fd} = 1;
4104 }
4106 # We distribute files that are in this directory.
4107 # At the top-level (`.') we also distribute files whose
4108 # directory does not have a Makefile.
4109 if (($fd eq $relative_dir)
4110 || ($relative_dir eq '.' && ! &is_make_dir ($fd)))
4111 {
4112 # The following will distribute $file as a side-effect when
4113 # it is appropriate (i.e., when $file is not already an output).
4114 # We do not need the result, just the side-effect.
4115 rewrite_inputs_into_dependencies ($link, $file);
4116 }
4117 }
4118 }
4120 # These files get removed by "make distclean".
4121 define_pretty_variable ('CONFIG_CLEAN_FILES', TRUE, INTERNAL,
4122 @actual_other_files);
4123 }
4125 # Handle C headers.
4126 sub handle_headers
4127 {
4128 my @r = &am_install_var ('-defaultdist', 'header', 'HEADERS', 'include',
4129 'oldinclude', 'pkginclude',
4130 'noinst', 'check');
4131 foreach (@r)
4132 {
4133 next unless $_->[1] =~ /\..*$/;
4134 &saw_extension ($&);
4135 }
4136 }
4138 sub handle_gettext
4139 {
4140 return if ! $seen_gettext || $relative_dir ne '.';
4142 my $subdirs = var 'SUBDIRS';
4144 if (! $subdirs)
4145 {
4146 err_ac "AM_GNU_GETTEXT used but SUBDIRS not defined";
4147 return;
4148 }
4150 # Perform some sanity checks to help users get the right setup.
4151 # We disable these tests when po/ doesn't exist in order not to disallow
4152 # unusual gettext setups.
4153 #
4154 # Bruno Haible:
4155 # | The idea is:
4156 # |
4157 # | 1) If a package doesn't have a directory po/ at top level, it
4158 # | will likely have multiple po/ directories in subpackages.
4159 # |
4160 # | 2) It is useful to warn for the absence of intl/ if AM_GNU_GETTEXT
4161 # | is used without 'external'. It is also useful to warn for the
4162 # | presence of intl/ if AM_GNU_GETTEXT([external]) is used. Both
4163 # | warnings apply only to the usual layout of packages, therefore
4164 # | they should both be disabled if no po/ directory is found at
4165 # | top level.
4167 if (-d 'po')
4168 {
4169 my @subdirs = $subdirs->value_as_list_recursive;
4171 msg_var ('syntax', $subdirs,
4172 "AM_GNU_GETTEXT used but `po' not in SUBDIRS")
4173 if ! grep ($_ eq 'po', @subdirs);
4175 # intl/ is not required when AM_GNU_GETTEXT is called with
4176 # the `external' option.
4177 msg_var ('syntax', $subdirs,
4178 "AM_GNU_GETTEXT used but `intl' not in SUBDIRS")
4179 if (! $seen_gettext_external
4180 && ! grep ($_ eq 'intl', @subdirs));
4182 # intl/ should not be used with AM_GNU_GETTEXT([external])
4183 msg_var ('syntax', $subdirs,
4184 "`intl' should not be in SUBDIRS when "
4185 . "AM_GNU_GETTEXT([external]) is used")
4186 if ($seen_gettext_external && grep ($_ eq 'intl', @subdirs));
4187 }
4189 require_file ($ac_gettext_location, GNU, 'ABOUT-NLS');
4190 }
4192 # Handle footer elements.
4193 sub handle_footer
4194 {
4195 # NOTE don't use define_pretty_variable here, because
4196 # $contents{...} is already defined.
4197 $output_vars .= 'SOURCES = ' . variable_value ('SOURCES') . "\n\n"
4198 if variable_value ('SOURCES');
4200 reject_rule ('.SUFFIXES',
4201 "use variable `SUFFIXES', not target `.SUFFIXES'");
4203 # Note: AIX 4.1 /bin/make will fail if any suffix rule appears
4204 # before .SUFFIXES. So we make sure that .SUFFIXES appears before
4205 # anything else, by sticking it right after the default: target.
4206 $output_header .= ".SUFFIXES:\n";
4207 my $suffixes = var 'SUFFIXES';
4208 my @suffixes = Automake::Rule::suffixes;
4209 if (@suffixes || $suffixes)
4210 {
4211 # Make sure SUFFIXES has unique elements. Sort them to ensure
4212 # the output remains consistent. However, $(SUFFIXES) is
4213 # always at the start of the list, unsorted. This is done
4214 # because make will choose rules depending on the ordering of
4215 # suffixes, and this lets the user have some control. Push
4216 # actual suffixes, and not $(SUFFIXES). Some versions of make
4217 # do not like variable substitutions on the .SUFFIXES line.
4218 my @user_suffixes = ($suffixes
4219 ? $suffixes->value_as_list_recursive : ());
4221 my %suffixes = map { $_ => 1 } @suffixes;
4222 delete @suffixes{@user_suffixes};
4224 $output_header .= (".SUFFIXES: "
4225 . join (' ', @user_suffixes, sort keys %suffixes)
4226 . "\n");
4227 }
4229 $output_trailer .= file_contents ('footer', new Automake::Location);
4230 }
4233 # Generate `make install' rules.
4234 sub handle_install ()
4235 {
4236 $output_rules .= &file_contents
4237 ('install',
4238 new Automake::Location,
4239 maybe_BUILT_SOURCES => (set_seen ('BUILT_SOURCES')
4240 ? (" \$(BUILT_SOURCES)\n"
4241 . "\t\$(MAKE) \$(AM_MAKEFLAGS)")
4242 : ''),
4243 'installdirs-local' => (user_phony_rule 'installdirs-local'
4244 ? ' installdirs-local' : ''),
4245 am__installdirs => variable_value ('am__installdirs') || '');
4246 }
4249 # Deal with all and all-am.
4250 sub handle_all ($)
4251 {
4252 my ($makefile) = @_;
4254 # Output `all-am'.
4256 # Put this at the beginning for the sake of non-GNU makes. This
4257 # is still wrong if these makes can run parallel jobs. But it is
4258 # right enough.
4259 unshift (@all, basename ($makefile));
4261 foreach my $spec (@config_headers)
4262 {
4263 my ($out, @ins) = split_config_file_spec ($spec);
4264 push (@all, basename ($out))
4265 if dirname ($out) eq $relative_dir;
4266 }
4268 # Install `all' hooks.
4269 push (@all, "all-local")
4270 if user_phony_rule "all-local";
4272 &pretty_print_rule ("all-am:", "\t\t", @all);
4273 &depend ('.PHONY', 'all-am', 'all');
4276 # Output `all'.
4278 my @local_headers = ();
4279 push @local_headers, '$(BUILT_SOURCES)'
4280 if var ('BUILT_SOURCES');
4281 foreach my $spec (@config_headers)
4282 {
4283 my ($out, @ins) = split_config_file_spec ($spec);
4284 push @local_headers, basename ($out)
4285 if dirname ($out) eq $relative_dir;
4286 }
4288 if (@local_headers)
4289 {
4290 # We need to make sure config.h is built before we recurse.
4291 # We also want to make sure that built sources are built
4292 # before any ordinary `all' targets are run. We can't do this
4293 # by changing the order of dependencies to the "all" because
4294 # that breaks when using parallel makes. Instead we handle
4295 # things explicitly.
4296 $output_all .= ("all: @local_headers"
4297 . "\n\t"
4298 . '$(MAKE) $(AM_MAKEFLAGS) '
4299 . (var ('SUBDIRS') ? 'all-recursive' : 'all-am')
4300 . "\n\n");
4301 }
4302 else
4303 {
4304 $output_all .= "all: " . (var ('SUBDIRS')
4305 ? 'all-recursive' : 'all-am') . "\n\n";
4306 }
4307 }
4310 # &do_check_merge_target ()
4311 # -------------------------
4312 # Handle check merge target specially.
4313 sub do_check_merge_target ()
4314 {
4315 # Include user-defined local form of target.
4316 push @check_tests, 'check-local'
4317 if user_phony_rule 'check-local';
4319 # In --cygnus mode, check doesn't depend on all.
4320 if (option 'cygnus')
4321 {
4322 # Just run the local check rules.
4323 pretty_print_rule ('check-am:', "\t\t", @check);
4324 }
4325 else
4326 {
4327 # The check target must depend on the local equivalent of
4328 # `all', to ensure all the primary targets are built. Then it
4329 # must build the local check rules.
4330 $output_rules .= "check-am: all-am\n";
4331 pretty_print_rule ("\t\$(MAKE) \$(AM_MAKEFLAGS)", "\t ",
4332 @check)
4333 if @check;
4334 }
4335 pretty_print_rule ("\t\$(MAKE) \$(AM_MAKEFLAGS)", "\t ",
4336 @check_tests)
4337 if @check_tests;
4339 depend '.PHONY', 'check', 'check-am';
4340 # Handle recursion. We have to honor BUILT_SOURCES like for `all:'.
4341 $output_rules .= ("check: "
4342 . (var ('BUILT_SOURCES')
4343 ? "\$(BUILT_SOURCES)\n\t\$(MAKE) \$(AM_MAKEFLAGS) "
4344 : '')
4345 . (var ('SUBDIRS') ? 'check-recursive' : 'check-am')
4346 . "\n");
4347 }
4349 # handle_clean ($MAKEFILE)
4350 # ------------------------
4351 # Handle all 'clean' targets.
4352 sub handle_clean ($)
4353 {
4354 my ($makefile) = @_;
4356 # Clean the files listed in user variables if they exist.
4357 $clean_files{'$(MOSTLYCLEANFILES)'} = MOSTLY_CLEAN
4358 if var ('MOSTLYCLEANFILES');
4359 $clean_files{'$(CLEANFILES)'} = CLEAN
4360 if var ('CLEANFILES');
4361 $clean_files{'$(DISTCLEANFILES)'} = DIST_CLEAN
4362 if var ('DISTCLEANFILES');
4363 $clean_files{'$(MAINTAINERCLEANFILES)'} = MAINTAINER_CLEAN
4364 if var ('MAINTAINERCLEANFILES');
4366 # Built sources are automatically removed by maintainer-clean.
4367 $clean_files{'$(BUILT_SOURCES)'} = MAINTAINER_CLEAN
4368 if var ('BUILT_SOURCES');
4370 # Compute a list of "rm"s to run for each target.
4371 my %rms = (MOSTLY_CLEAN, [],
4372 CLEAN, [],
4373 DIST_CLEAN, [],
4374 MAINTAINER_CLEAN, []);
4376 foreach my $file (keys %clean_files)
4377 {
4378 my $when = $clean_files{$file};
4379 prog_error 'invalid entry in %clean_files'
4380 unless exists $rms{$when};
4382 my $rm = "rm -f $file";
4383 # If file is a variable, make sure when don't call `rm -f' without args.
4384 $rm ="test -z \"$file\" || $rm"
4385 if ($file =~ /^\s*\$(\(.*\)|\{.*\})\s*$/);
4387 push @{$rms{$when}}, "\t-$rm\n";
4388 }
4390 $output_rules .= &file_contents
4391 ('clean',
4392 new Automake::Location,
4393 MOSTLYCLEAN_RMS => join ('', sort @{$rms{&MOSTLY_CLEAN}}),
4394 CLEAN_RMS => join ('', sort @{$rms{&CLEAN}}),
4395 DISTCLEAN_RMS => join ('', sort @{$rms{&DIST_CLEAN}}),
4396 MAINTAINER_CLEAN_RMS => join ('', sort @{$rms{&MAINTAINER_CLEAN}}),
4397 MAKEFILE => basename $makefile,
4398 );
4399 }
4402 # &target_cmp ($A, $B)
4403 # --------------------
4404 # Subroutine for &handle_factored_dependencies to let `.PHONY' and
4405 # other `.TARGETS' be last.
4406 sub target_cmp
4407 {
4408 return 0 if $a eq $b;
4410 my $a1 = substr ($a, 0, 1);
4411 my $b1 = substr ($b, 0, 1);
4412 if ($a1 ne $b1)
4413 {
4414 return -1 if $b1 eq '.';
4415 return 1 if $a1 eq '.';
4416 }
4417 return $a cmp $b;
4418 }
4421 # &handle_factored_dependencies ()
4422 # --------------------------------
4423 # Handle everything related to gathered targets.
4424 sub handle_factored_dependencies
4425 {
4426 # Reject bad hooks.
4427 foreach my $utarg ('uninstall-data-local', 'uninstall-data-hook',
4428 'uninstall-exec-local', 'uninstall-exec-hook',
4429 'uninstall-dvi-local',
4430 'uninstall-html-local',
4431 'uninstall-info-local',
4432 'uninstall-pdf-local',
4433 'uninstall-ps-local')
4434 {
4435 my $x = $utarg;
4436 $x =~ s/-.*-/-/;
4437 reject_rule ($utarg, "use `$x', not `$utarg'");
4438 }
4440 reject_rule ('install-local',
4441 "use `install-data-local' or `install-exec-local', "
4442 . "not `install-local'");
4444 reject_rule ('install-hook',
4445 "use `install-data-hook' or `install-exec-hook', "
4446 . "not `install-hook'");
4448 # Install the -local hooks.
4449 foreach (keys %dependencies)
4450 {
4451 # Hooks are installed on the -am targets.
4452 s/-am$// or next;
4453 depend ("$_-am", "$_-local")
4454 if user_phony_rule "$_-local";
4455 }
4457 # Install the -hook hooks.
4458 # FIXME: Why not be as liberal as we are with -local hooks?
4459 foreach ('install-exec', 'install-data', 'uninstall')
4460 {
4461 if (user_phony_rule "$_-hook")
4462 {
4463 $actions{"$_-am"} .=
4464 ("\t\@\$(NORMAL_INSTALL)\n"
4465 . "\t" . '$(MAKE) $(AM_MAKEFLAGS) ' . "$_-hook\n");
4466 depend ('.MAKE', "$_-am");
4467 }
4468 }
4470 # All the required targets are phony.
4471 depend ('.PHONY', keys %required_targets);
4473 # Actually output gathered targets.
4474 foreach (sort target_cmp keys %dependencies)
4475 {
4476 # If there is nothing about this guy, skip it.
4477 next
4478 unless (@{$dependencies{$_}}
4479 || $actions{$_}
4480 || $required_targets{$_});
4482 # Define gathered targets in undefined conditions.
4483 # FIXME: Right now we must handle .PHONY as an exception,
4484 # because people write things like
4485 # .PHONY: myphonytarget
4486 # to append dependencies. This would not work if Automake
4487 # refrained from defining its own .PHONY target as it does
4488 # with other overridden targets.
4489 # Likewise for `.MAKE'.
4490 my @undefined_conds = (TRUE,);
4491 if ($_ ne '.PHONY' && $_ ne '.MAKE')
4492 {
4493 @undefined_conds =
4494 Automake::Rule::define ($_, 'internal',
4495 RULE_AUTOMAKE, TRUE, INTERNAL);
4496 }
4497 my @uniq_deps = uniq (sort @{$dependencies{$_}});
4498 foreach my $cond (@undefined_conds)
4499 {
4500 my $condstr = $cond->subst_string;
4501 &pretty_print_rule ("$condstr$_:", "$condstr\t", @uniq_deps);
4502 $output_rules .= $actions{$_} if defined $actions{$_};
4503 $output_rules .= "\n";
4504 }
4505 }
4506 }
4509 # &handle_tests_dejagnu ()
4510 # ------------------------
4511 sub handle_tests_dejagnu
4512 {
4513 push (@check_tests, 'check-DEJAGNU');
4514 $output_rules .= file_contents ('dejagnu', new Automake::Location);
4515 }
4518 # Handle TESTS variable and other checks.
4519 sub handle_tests
4520 {
4521 if (option 'dejagnu')
4522 {
4523 &handle_tests_dejagnu;
4524 }
4525 else
4526 {
4527 foreach my $c ('DEJATOOL', 'RUNTEST', 'RUNTESTFLAGS')
4528 {
4529 reject_var ($c, "`$c' defined but `dejagnu' not in "
4530 . "`AUTOMAKE_OPTIONS'");
4531 }
4532 }
4534 if (var ('TESTS'))
4535 {
4536 push (@check_tests, 'check-TESTS');
4537 $output_rules .= &file_contents ('check', new Automake::Location);
4538 }
4539 }
4541 # Handle Emacs Lisp.
4542 sub handle_emacs_lisp
4543 {
4544 my @elfiles = &am_install_var ('-candist', 'lisp', 'LISP',
4545 'lisp', 'noinst');
4547 return if ! @elfiles;
4549 define_pretty_variable ('am__ELFILES', TRUE, INTERNAL,
4550 map { $_->[1] } @elfiles);
4551 define_pretty_variable ('am__ELCFILES', TRUE, INTERNAL,
4552 '$(am__ELFILES:.el=.elc)');
4553 # This one can be overridden by users.
4554 define_pretty_variable ('ELCFILES', TRUE, INTERNAL, '$(LISP:.el=.elc)');
4556 push @all, '$(ELCFILES)';
4558 require_variables ($elfiles[0][0], "Emacs Lisp sources seen", TRUE,
4559 'EMACS', 'lispdir');
4560 require_conf_file ($elfiles[0][0], FOREIGN, 'elisp-comp');
4561 &define_variable ('elisp_comp', "$am_config_aux_dir/elisp-comp", INTERNAL);
4562 }
4564 # Handle Python
4565 sub handle_python
4566 {
4567 my @pyfiles = &am_install_var ('-defaultdist', 'python', 'PYTHON',
4568 'noinst');
4569 return if ! @pyfiles;
4571 require_variables ($pyfiles[0][0], "Python sources seen", TRUE, 'PYTHON');
4572 require_conf_file ($pyfiles[0][0], FOREIGN, 'py-compile');
4573 &define_variable ('py_compile', "$am_config_aux_dir/py-compile", INTERNAL);
4574 }
4576 # Handle Java.
4577 sub handle_java
4578 {
4579 my @sourcelist = &am_install_var ('-candist',
4580 'java', 'JAVA',
4581 'java', 'noinst', 'check');
4582 return if ! @sourcelist;
4584 my @prefix = am_primary_prefixes ('JAVA', 1,
4585 'java', 'noinst', 'check');
4587 my $dir;
4588 foreach my $curs (@prefix)
4589 {
4590 next
4591 if $curs eq 'EXTRA';
4593 err_var "${curs}_JAVA", "multiple _JAVA primaries in use"
4594 if defined $dir;
4595 $dir = $curs;
4596 }
4599 push (@all, 'class' . $dir . '.stamp');
4600 }
4603 # Handle some of the minor options.
4604 sub handle_minor_options
4605 {
4606 if (option 'readme-alpha')
4607 {
4608 if ($relative_dir eq '.')
4609 {
4610 if ($package_version !~ /^$GNITS_VERSION_PATTERN$/)
4611 {
4612 msg ('error-gnits', $package_version_location,
4613 "version `$package_version' doesn't follow " .
4614 "Gnits standards");
4615 }
4616 if (defined $1 && -f 'README-alpha')
4617 {
4618 # This means we have an alpha release. See
4619 # GNITS_VERSION_PATTERN for details.
4620 push_dist_common ('README-alpha');
4621 }
4622 }
4623 }
4624 }
4626 ################################################################
4628 # ($OUTPUT, @INPUTS)
4629 # &split_config_file_spec ($SPEC)
4630 # -------------------------------
4631 # Decode the Autoconf syntax for config files (files, headers, links
4632 # etc.).
4633 sub split_config_file_spec ($)
4634 {
4635 my ($spec) = @_;
4636 my ($output, @inputs) = split (/:/, $spec);
4638 push @inputs, "$output.in"
4639 unless @inputs;
4641 return ($output, @inputs);
4642 }
4644 # $input
4645 # locate_am (@POSSIBLE_SOURCES)
4646 # -----------------------------
4647 # AC_CONFIG_FILES allow specifications such as Makefile:top.in:mid.in:bot.in
4648 # This functions returns the first *.in file for which a *.am exists.
4649 # It returns undef otherwise.
4650 sub locate_am (@)
4651 {
4652 my (@rest) = @_;
4653 my $input;
4654 foreach my $file (@rest)
4655 {
4656 if (($file =~ /^(.*)\.in$/) && -f "$1.am")
4657 {
4658 $input = $file;
4659 last;
4660 }
4661 }
4662 return $input;
4663 }
4665 my %make_list;
4667 # &scan_autoconf_config_files ($WHERE, $CONFIG-FILES)
4668 # ---------------------------------------------------
4669 # Study $CONFIG-FILES which is the first argument to AC_CONFIG_FILES
4670 # (or AC_OUTPUT).
4671 sub scan_autoconf_config_files ($$)
4672 {
4673 my ($where, $config_files) = @_;
4675 # Look at potential Makefile.am's.
4676 foreach (split ' ', $config_files)
4677 {
4678 # Must skip empty string for Perl 4.
4679 next if $_ eq "\\" || $_ eq '';
4681 # Handle $local:$input syntax.
4682 my ($local, @rest) = split (/:/);
4683 @rest = ("$local.in",) unless @rest;
4684 my $input = locate_am @rest;
4685 if ($input)
4686 {
4687 # We have a file that automake should generate.
4688 $make_list{$input} = join (':', ($local, @rest));
4689 }
4690 else
4691 {
4692 # We have a file that automake should cause to be
4693 # rebuilt, but shouldn't generate itself.
4694 push (@other_input_files, $_);
4695 }
4696 $ac_config_files_location{$local} = $where;
4697 }
4698 }
4701 # &scan_autoconf_traces ($FILENAME)
4702 # ---------------------------------
4703 sub scan_autoconf_traces ($)
4704 {
4705 my ($filename) = @_;
4707 # Macros to trace, with their minimal number of arguments.
4708 #
4709 # IMPORTANT: If you add a macro here, you should also add this macro
4710 # ========= to Automake-preselection in autoconf/lib/autom4te.in.
4711 my %traced = (
4712 AC_CANONICAL_BUILD => 0,
4713 AC_CANONICAL_HOST => 0,
4714 AC_CANONICAL_TARGET => 0,
4715 AC_CONFIG_AUX_DIR => 1,
4716 AC_CONFIG_FILES => 1,
4717 AC_CONFIG_HEADERS => 1,
4718 AC_CONFIG_LINKS => 1,
4719 AC_INIT => 0,
4720 AC_LIBSOURCE => 1,
4721 AC_REQUIRE_AUX_FILE => 1,
4722 AC_SUBST => 1,
4723 AM_AUTOMAKE_VERSION => 1,
4724 AM_CONDITIONAL => 2,
4725 AM_ENABLE_MULTILIB => 0,
4726 AM_GNU_GETTEXT => 0,
4727 AM_INIT_AUTOMAKE => 0,
4728 AM_MAINTAINER_MODE => 0,
4729 AM_PROG_CC_C_O => 0,
4730 LT_SUPPORTED_TAG => 1,
4731 _LT_AC_TAGCONFIG => 0,
4732 m4_include => 1,
4733 m4_sinclude => 1,
4734 sinclude => 1,
4735 );
4737 my $traces = ($ENV{AUTOCONF} || 'autoconf') . " ";
4739 # Use a separator unlikely to be used, not `:', the default, which
4740 # has a precise meaning for AC_CONFIG_FILES and so on.
4741 $traces .= join (' ',
4742 map { "--trace=$_" . ':\$f:\$l::\$n::\${::}%' }
4743 (keys %traced));
4745 my $tracefh = new Automake::XFile ("$traces $filename |");
4746 verb "reading $traces";
4748 while ($_ = $tracefh->getline)
4749 {
4750 chomp;
4751 my ($here, @args) = split (/::/);
4752 my $where = new Automake::Location $here;
4753 my $macro = $args[0];
4755 prog_error ("unrequested trace `$macro'")
4756 unless exists $traced{$macro};
4758 # Skip and diagnose malformed calls.
4759 if ($#args < $traced{$macro})
4760 {
4761 msg ('syntax', $where, "not enough arguments for $macro");
4762 next;
4763 }
4765 # Alphabetical ordering please.
4766 if ($macro eq 'AC_CANONICAL_BUILD')
4767 {
4768 if ($seen_canonical <= AC_CANONICAL_BUILD)
4769 {
4770 $seen_canonical = AC_CANONICAL_BUILD;
4771 $canonical_location = $where;
4772 }
4773 }
4774 elsif ($macro eq 'AC_CANONICAL_HOST')
4775 {
4776 if ($seen_canonical <= AC_CANONICAL_HOST)
4777 {
4778 $seen_canonical = AC_CANONICAL_HOST;
4779 $canonical_location = $where;
4780 }
4781 }
4782 elsif ($macro eq 'AC_CANONICAL_TARGET')
4783 {
4784 $seen_canonical = AC_CANONICAL_TARGET;
4785 $canonical_location = $where;
4786 }
4787 elsif ($macro eq 'AC_CONFIG_AUX_DIR')
4788 {
4789 if ($seen_init_automake)
4790 {
4791 error ($where, "AC_CONFIG_AUX_DIR must be called before "
4792 . "AM_INIT_AUTOMAKE...", partial => 1);
4793 error ($seen_init_automake, "... AM_INIT_AUTOMAKE called here");
4794 }
4795 $config_aux_dir = $args[1];
4796 $config_aux_dir_set_in_configure_ac = 1;
4797 $relative_dir = '.';
4798 check_directory ($config_aux_dir, $where);
4799 }
4800 elsif ($macro eq 'AC_CONFIG_FILES')
4801 {
4802 # Look at potential Makefile.am's.
4803 scan_autoconf_config_files ($where, $args[1]);
4804 }
4805 elsif ($macro eq 'AC_CONFIG_HEADERS')
4806 {
4807 foreach my $spec (split (' ', $args[1]))
4808 {
4809 my ($dest, @src) = split (':', $spec);
4810 $ac_config_files_location{$dest} = $where;
4811 push @config_headers, $spec;
4812 }
4813 }
4814 elsif ($macro eq 'AC_CONFIG_LINKS')
4815 {
4816 foreach my $spec (split (' ', $args[1]))
4817 {
4818 my ($dest, $src) = split (':', $spec);
4819 $ac_config_files_location{$dest} = $where;
4820 push @config_links, $spec;
4821 }
4822 }
4823 elsif ($macro eq 'AC_INIT')
4824 {
4825 if (defined $args[2])
4826 {
4827 $package_version = $args[2];
4828 $package_version_location = $where;
4829 }
4830 }
4831 elsif ($macro eq 'AC_LIBSOURCE')
4832 {
4833 $libsources{$args[1]} = $here;
4834 }
4835 elsif ($macro eq 'AC_SUBST')
4836 {
4837 # Just check for alphanumeric in AC_SUBST. If you do
4838 # AC_SUBST(5), then too bad.
4839 $configure_vars{$args[1]} = $where
4840 if $args[1] =~ /^\w+$/;
4841 }
4842 elsif ($macro eq 'AM_AUTOMAKE_VERSION')
4843 {
4844 error ($where,
4845 "version mismatch. This is Automake $VERSION,\n" .
4846 "but the definition used by this AM_INIT_AUTOMAKE\n" .
4847 "comes from Automake $args[1]. You should recreate\n" .
4848 "aclocal.m4 with aclocal and run automake again.\n",
4849 # $? = 63 is used to indicate version mismatch to missing.
4850 exit_code => 63)
4851 if $VERSION ne $args[1];
4853 $seen_automake_version = 1;
4854 }
4855 elsif ($macro eq 'AM_CONDITIONAL')
4856 {
4857 $configure_cond{$args[1]} = $where;
4858 }
4859 elsif ($macro eq 'AM_ENABLE_MULTILIB')
4860 {
4861 $seen_multilib = $where;
4862 }
4863 elsif ($macro eq 'AM_GNU_GETTEXT')
4864 {
4865 $seen_gettext = $where;
4866 $ac_gettext_location = $where;
4867 $seen_gettext_external = grep ($_ eq 'external', @args);
4868 }
4869 elsif ($macro eq 'AM_INIT_AUTOMAKE')
4870 {
4871 $seen_init_automake = $where;
4872 if (defined $args[2])
4873 {
4874 $package_version = $args[2];
4875 $package_version_location = $where;
4876 }
4877 elsif (defined $args[1])
4878 {
4879 exit $exit_code
4880 if (process_global_option_list ($where,
4881 split (' ', $args[1])));
4882 }
4883 }
4884 elsif ($macro eq 'AM_MAINTAINER_MODE')
4885 {
4886 $seen_maint_mode = $where;
4887 }
4888 elsif ($macro eq 'AM_PROG_CC_C_O')
4889 {
4890 $seen_cc_c_o = $where;
4891 }
4892 elsif ($macro eq 'AC_REQUIRE_AUX_FILE')
4893 {
4894 # Only remember the first time a file is required.
4895 $required_aux_file{$args[1]} = $where
4896 unless exists $required_aux_file{$args[1]};
4897 }
4898 elsif ($macro eq 'm4_include'
4899 || $macro eq 'm4_sinclude'
4900 || $macro eq 'sinclude')
4901 {
4902 # Skip missing `sinclude'd files.
4903 next if $macro ne 'm4_include' && ! -f $args[1];
4905 # Some modified versions of Autoconf don't use
4906 # forzen files. Consequently it's possible that we see all
4907 # m4_include's performed during Autoconf's startup.
4908 # Obviously we don't want to distribute Autoconf's files
4909 # so we skip absolute filenames here.
4910 push @configure_deps, '$(top_srcdir)/' . $args[1]
4911 unless $here =~ m,^(?:\w:)?[\\/],;
4912 # Keep track of the greatest timestamp.
4913 if (-e $args[1])
4914 {
4915 my $mtime = mtime $args[1];
4916 $configure_deps_greatest_timestamp = $mtime
4917 if $mtime > $configure_deps_greatest_timestamp;
4918 }
4919 }
4920 elsif ($macro eq 'LT_SUPPORTED_TAG')
4921 {
4922 $libtool_tags{$args[1]} = 1;
4923 $libtool_new_api = 1;
4924 }
4925 elsif ($macro eq '_LT_AC_TAGCONFIG')
4926 {
4927 # _LT_AC_TAGCONFIG is an old macro present in Libtool 1.5.
4928 # We use it to detect whether tags are supported. Our
4929 # prefered interface is LT_SUPPORTED_TAG, but it was
4930 # introduced in Libtool 1.6.
4931 if (0 == keys %libtool_tags)
4932 {
4933 # Hardcode the tags supported by Libtool 1.5.
4934 %libtool_tags = (CC => 1, CXX => 1, GCJ => 1, F77 => 1);
4935 }
4936 }
4937 }
4939 $tracefh->close;
4940 }
4943 # &scan_autoconf_files ()
4944 # -----------------------
4945 # Check whether we use `configure.ac' or `configure.in'.
4946 # Scan it (and possibly `aclocal.m4') for interesting things.
4947 # We must scan aclocal.m4 because there might be AC_SUBSTs and such there.
4948 sub scan_autoconf_files ()
4949 {
4950 # Reinitialize libsources here. This isn't really necessary,
4951 # since we currently assume there is only one configure.ac. But
4952 # that won't always be the case.
4953 %libsources = ();
4955 # Keep track of the youngest configure dependency.
4956 $configure_deps_greatest_timestamp = mtime $configure_ac;
4957 if (-e 'aclocal.m4')
4958 {
4959 my $mtime = mtime 'aclocal.m4';
4960 $configure_deps_greatest_timestamp = $mtime
4961 if $mtime > $configure_deps_greatest_timestamp;
4962 }
4964 scan_autoconf_traces ($configure_ac);
4966 @configure_input_files = sort keys %make_list;
4967 # Set input and output files if not specified by user.
4968 if (! @input_files)
4969 {
4970 @input_files = @configure_input_files;
4971 %output_files = %make_list;
4972 }
4975 if (! $seen_init_automake)
4976 {
4977 err_ac ("no proper invocation of AM_INIT_AUTOMAKE was found.\nYou "
4978 . "should verify that $configure_ac invokes AM_INIT_AUTOMAKE,"
4979 . "\nthat aclocal.m4 is present in the top-level directory,\n"
4980 . "and that aclocal.m4 was recently regenerated "
4981 . "(using aclocal).");
4982 }
4983 else
4984 {
4985 if (! $seen_automake_version)
4986 {
4987 if (-f 'aclocal.m4')
4988 {
4989 error ($seen_init_automake,
4990 "your implementation of AM_INIT_AUTOMAKE comes from " .
4991 "an\nold Automake version. You should recreate " .
4992 "aclocal.m4\nwith aclocal and run automake again.\n",
4993 # $? = 63 is used to indicate version mismatch to missing.
4994 exit_code => 63);
4995 }
4996 else
4997 {
4998 error ($seen_init_automake,
4999 "no proper implementation of AM_INIT_AUTOMAKE was " .
5000 "found,\nprobably because aclocal.m4 is missing...\n" .
5001 "You should run aclocal to create this file, then\n" .
5002 "run automake again.\n");
5003 }
5004 }
5005 }
5007 locate_aux_dir ();
5009 # Reorder @input_files so that the Makefile that distributes aux
5010 # files is processed last. This is important because each directory
5011 # can require auxiliary scripts and we should wait until they have
5012 # been installed before distributing them.
5014 # The Makefile.in that distribute the aux files is the one in
5015 # $config_aux_dir or the top-level Makefile.
5016 my $auxdirdist = is_make_dir ($config_aux_dir) ? $config_aux_dir : '.';
5017 my @new_input_files = ();
5018 while (@input_files)
5019 {
5020 my $in = pop @input_files;
5021 my @ins = split (/:/, $output_files{$in});
5022 if (dirname ($ins[0]) eq $auxdirdist)
5023 {
5024 push @new_input_files, $in;
5025 $automake_will_process_aux_dir = 1;
5026 }
5027 else
5028 {
5029 unshift @new_input_files, $in;
5030 }
5031 }
5032 @input_files = @new_input_files;
5034 # If neither the auxdir/Makefile nor the ./Makefile are generated
5035 # by Automake, we won't distribute the aux files anyway. Assume
5036 # the user know what (s)he does, and pretend we will distribute
5037 # them to disable the error in require_file_internal.
5038 $automake_will_process_aux_dir = 1 if ! is_make_dir ($auxdirdist);
5040 # Look for some files we need. Always check for these. This
5041 # check must be done for every run, even those where we are only
5042 # looking at a subdir Makefile. We must set relative_dir for
5043 # maybe_push_required_file to work.
5044 $relative_dir = '.';
5045 foreach my $file (keys %required_aux_file)
5046 {
5047 require_conf_file ($required_aux_file{$file}->get, FOREIGN, $file)
5048 }
5049 err_am "`install.sh' is an anachronism; use `install-sh' instead"
5050 if -f $config_aux_dir . '/install.sh';
5052 # Preserve dist_common for later.
5053 $configure_dist_common = variable_value ('DIST_COMMON') || '';
5055 }
5057 ################################################################
5059 # Set up for Cygnus mode.
5060 sub check_cygnus
5061 {
5062 my $cygnus = option 'cygnus';
5063 return unless $cygnus;
5065 set_strictness ('foreign');
5066 set_option ('no-installinfo', $cygnus);
5067 set_option ('no-dependencies', $cygnus);
5068 set_option ('no-dist', $cygnus);
5070 err_ac "`AM_MAINTAINER_MODE' required when --cygnus specified"
5071 if !$seen_maint_mode;
5072 }
5074 # Do any extra checking for GNU standards.
5075 sub check_gnu_standards
5076 {
5077 if ($relative_dir eq '.')
5078 {
5079 # In top level (or only) directory.
5080 require_file ("$am_file.am", GNU,
5081 qw/INSTALL NEWS README AUTHORS ChangeLog/);
5083 # Accept one of these three licenses; default to COPYING.
5084 # Make sure we do not overwrite an existing license.
5085 my $license;
5086 foreach (qw /COPYING COPYING.LIB COPYING.LESSER/)
5087 {
5088 if (-f $_)
5089 {
5090 $license = $_;
5091 last;
5092 }
5093 }
5094 require_file ("$am_file.am", GNU, 'COPYING')
5095 unless $license;
5096 }
5098 for my $opt ('no-installman', 'no-installinfo')
5099 {
5100 msg ('error-gnu', option $opt,
5101 "option `$opt' disallowed by GNU standards")
5102 if option $opt;
5103 }
5104 }
5106 # Do any extra checking for GNITS standards.
5107 sub check_gnits_standards
5108 {
5109 if ($relative_dir eq '.')
5110 {
5111 # In top level (or only) directory.
5112 require_file ("$am_file.am", GNITS, 'THANKS');
5113 }
5114 }
5116 ################################################################
5117 #
5118 # Functions to handle files of each language.
5120 # Each `lang_X_rewrite($DIRECTORY, $BASE, $EXT)' function follows a
5121 # simple formula: Return value is LANG_SUBDIR if the resulting object
5122 # file should be in a subdir if the source file is, LANG_PROCESS if
5123 # file is to be dealt with, LANG_IGNORE otherwise.
5125 # Much of the actual processing is handled in
5126 # handle_single_transform. These functions exist so that
5127 # auxiliary information can be recorded for a later cleanup pass.
5128 # Note that the calls to these functions are computed, so don't bother
5129 # searching for their precise names in the source.
5131 # This is just a convenience function that can be used to determine
5132 # when a subdir object should be used.
5133 sub lang_sub_obj
5134 {
5135 return option 'subdir-objects' ? LANG_SUBDIR : LANG_PROCESS;
5136 }
5138 # Rewrite a single C source file.
5139 sub lang_c_rewrite
5140 {
5141 my ($directory, $base, $ext, $nonansi_obj, $have_per_exec_flags, $var) = @_;
5143 if (option 'ansi2knr' && $base =~ /_$/)
5144 {
5145 # FIXME: include line number in error.
5146 err_am "C source file `$base.c' would be deleted by ansi2knr rules";
5147 }
5149 my $r = LANG_PROCESS;
5150 if (option 'subdir-objects')
5151 {
5152 $r = LANG_SUBDIR;
5153 if ($directory && $directory ne '.')
5154 {
5155 $base = $directory . '/' . $base;
5157 # libtool is always able to put the object at the proper place,
5158 # so we do not have to require AM_PROG_CC_C_O when building .lo files.
5159 err_var ($var, "compiling `$base.c' in subdir requires "
5160 . "`AM_PROG_CC_C_O' in `$configure_ac'",
5161 uniq_scope => US_GLOBAL,
5162 uniq_part => 'AM_PROG_CC_C_O subdir')
5163 unless $seen_cc_c_o || $nonansi_obj eq '.lo';
5164 }
5166 # In this case we already have the directory information, so
5167 # don't add it again.
5168 $de_ansi_files{$base} = '';
5169 }
5170 else
5171 {
5172 $de_ansi_files{$base} = (($directory eq '.' || $directory eq '')
5173 ? ''
5174 : "$directory/");
5175 }
5177 if (! $seen_cc_c_o
5178 && $have_per_exec_flags
5179 && ! option 'subdir-objects'
5180 && $nonansi_obj ne '.lo')
5181 {
5182 err_var ($var, "compiling `$base.c' with per-target flags requires "
5183 . "`AM_PROG_CC_C_O' in `$configure_ac'",
5184 uniq_scope => US_GLOBAL,
5185 uniq_part => 'AM_PROG_CC_C_O per-target')
5186 }
5188 return $r;
5189 }
5191 # Rewrite a single C++ source file.
5192 sub lang_cxx_rewrite
5193 {
5194 return &lang_sub_obj;
5195 }
5197 # Rewrite a single header file.
5198 sub lang_header_rewrite
5199 {
5200 # Header files are simply ignored.
5201 return LANG_IGNORE;
5202 }
5204 # Rewrite a single yacc file.
5205 sub lang_yacc_rewrite
5206 {
5207 my ($directory, $base, $ext) = @_;
5209 my $r = &lang_sub_obj;
5210 (my $newext = $ext) =~ tr/y/c/;
5211 return ($r, $newext);
5212 }
5214 # Rewrite a single yacc++ file.
5215 sub lang_yaccxx_rewrite
5216 {
5217 my ($directory, $base, $ext) = @_;
5219 my $r = &lang_sub_obj;
5220 (my $newext = $ext) =~ tr/y/c/;
5221 return ($r, $newext);
5222 }
5224 # Rewrite a single lex file.
5225 sub lang_lex_rewrite
5226 {
5227 my ($directory, $base, $ext) = @_;
5229 my $r = &lang_sub_obj;
5230 (my $newext = $ext) =~ tr/l/c/;
5231 return ($r, $newext);
5232 }
5234 # Rewrite a single lex++ file.
5235 sub lang_lexxx_rewrite
5236 {
5237 my ($directory, $base, $ext) = @_;
5239 my $r = &lang_sub_obj;
5240 (my $newext = $ext) =~ tr/l/c/;
5241 return ($r, $newext);
5242 }
5244 # Rewrite a single assembly file.
5245 sub lang_asm_rewrite
5246 {
5247 return &lang_sub_obj;
5248 }
5250 # Rewrite a single preprocessed assembly file.
5251 sub lang_cppasm_rewrite
5252 {
5253 return &lang_sub_obj;
5254 }
5256 # Rewrite a single Fortran 77 file.
5257 sub lang_f77_rewrite
5258 {
5259 return LANG_PROCESS;
5260 }
5262 # Rewrite a single Fortran file.
5263 sub lang_fc_rewrite
5264 {
5265 return LANG_PROCESS;
5266 }
5268 # Rewrite a single preprocessed Fortran file.
5269 sub lang_ppfc_rewrite
5270 {
5271 return LANG_PROCESS;
5272 }
5274 # Rewrite a single preprocessed Fortran 77 file.
5275 sub lang_ppf77_rewrite
5276 {
5277 return LANG_PROCESS;
5278 }
5280 # Rewrite a single ratfor file.
5281 sub lang_ratfor_rewrite
5282 {
5283 return LANG_PROCESS;
5284 }
5286 # Rewrite a single Objective C file.
5287 sub lang_objc_rewrite
5288 {
5289 return &lang_sub_obj;
5290 }
5292 # Rewrite a single Java file.
5293 sub lang_java_rewrite
5294 {
5295 return LANG_SUBDIR;
5296 }
5298 # The lang_X_finish functions are called after all source file
5299 # processing is done. Each should handle defining rules for the
5300 # language, etc. A finish function is only called if a source file of
5301 # the appropriate type has been seen.
5303 sub lang_c_finish
5304 {
5305 # Push all libobjs files onto de_ansi_files. We actually only
5306 # push files which exist in the current directory, and which are
5307 # genuine source files.
5308 foreach my $file (keys %libsources)
5309 {
5310 if ($file =~ /^(.*)\.[cly]$/ && -f "$relative_dir/$file")
5311 {
5312 $de_ansi_files{$1} = ''
5313 }
5314 }
5316 if (option 'ansi2knr' && keys %de_ansi_files)
5317 {
5318 # Make all _.c files depend on their corresponding .c files.
5319 my @objects;
5320 foreach my $base (sort keys %de_ansi_files)
5321 {
5322 # Each _.c file must depend on ansi2knr; otherwise it
5323 # might be used in a parallel build before it is built.
5324 # We need to support files in the srcdir and in the build
5325 # dir (because these files might be auto-generated. But
5326 # we can't use $< -- some makes only define $< during a
5327 # suffix rule.
5328 my $ansfile = $de_ansi_files{$base} . $base . '.c';
5329 $output_rules .= ($base . "_.c: $ansfile \$(ANSI2KNR)\n\t"
5330 . '$(CPP) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS) $(CPPFLAGS) '
5331 . '`if test -f $(srcdir)/' . $ansfile
5332 . '; then echo $(srcdir)/' . $ansfile
5333 . '; else echo ' . $ansfile . '; fi` '
5334 . "| sed 's/^# \\([0-9]\\)/#line \\1/' "
5335 . '| $(ANSI2KNR) > $@'
5336 # If ansi2knr fails then we shouldn't
5337 # create the _.c file
5338 . " || rm -f \$\@\n");
5339 push (@objects, $base . '_.$(OBJEXT)');
5340 push (@objects, $base . '_.lo')
5341 if var ('LIBTOOL');
5343 # Explicitly clean the _.c files if they are in a
5344 # subdirectory. (In the current directory they get erased
5345 # by a `rm -f *_.c' rule.)
5346 $clean_files{$base . '_.c'} = MOSTLY_CLEAN
5347 if dirname ($base) ne '.';
5348 }
5350 # Make all _.o (and _.lo) files depend on ansi2knr.
5351 # Use a sneaky little hack to make it print nicely.
5352 &pretty_print_rule ('', '', @objects, ':', '$(ANSI2KNR)');
5353 }
5354 }
5356 # This is a yacc helper which is called whenever we have decided to
5357 # compile a yacc file.
5358 sub lang_yacc_target_hook
5359 {
5360 my ($self, $aggregate, $output, $input, %transform) = @_;
5362 my $flag = $aggregate . "_YFLAGS";
5363 my $flagvar = var $flag;
5364 my $YFLAGSvar = var 'YFLAGS';
5365 if (($flagvar && $flagvar->variable_value =~ /$DASH_D_PATTERN/o)
5366 || ($YFLAGSvar && $YFLAGSvar->variable_value =~ /$DASH_D_PATTERN/o))
5367 {
5368 (my $output_base = $output) =~ s/$KNOWN_EXTENSIONS_PATTERN$//;
5369 my $header = $output_base . '.h';
5371 # Found a `-d' that applies to the compilation of this file.
5372 # Add a dependency for the generated header file, and arrange
5373 # for that file to be included in the distribution.
5374 foreach my $cond (Automake::Rule::define (${header}, 'internal',
5375 RULE_AUTOMAKE, TRUE,
5376 INTERNAL))
5377 {
5378 my $condstr = $cond->subst_string;
5379 $output_rules .= ("$condstr${header}: $output\n"
5380 # Recover from removal of $header
5381 . "$condstr\t\@if test ! -f \$@; then \\\n"
5382 . "$condstr\t rm -f $output; \\\n"
5383 . "$condstr\t \$(MAKE) $output; \\\n"
5384 . "$condstr\telse :; fi\n");
5385 }
5386 # Distribute the generated file, unless its .y source was
5387 # listed in a nodist_ variable. (&handle_source_transform
5388 # will set DIST_SOURCE.)
5389 &push_dist_common ($header)
5390 if $transform{'DIST_SOURCE'};
5392 # If the files are built in the build directory, then we want
5393 # to remove them with `make clean'. If they are in srcdir
5394 # they shouldn't be touched. However, we can't determine this
5395 # statically, and the GNU rules say that yacc/lex output files
5396 # should be removed by maintainer-clean. So that's what we
5397 # do.
5398 $clean_files{$header} = MAINTAINER_CLEAN;
5399 }
5400 # Erase $OUTPUT on `make maintainer-clean' (by GNU standards).
5401 # See the comment above for $HEADER.
5402 $clean_files{$output} = MAINTAINER_CLEAN;
5403 }
5405 # This is a lex helper which is called whenever we have decided to
5406 # compile a lex file.
5407 sub lang_lex_target_hook
5408 {
5409 my ($self, $aggregate, $output, $input) = @_;
5410 # If the files are built in the build directory, then we want to
5411 # remove them with `make clean'. If they are in srcdir they
5412 # shouldn't be touched. However, we can't determine this
5413 # statically, and the GNU rules say that yacc/lex output files
5414 # should be removed by maintainer-clean. So that's what we do.
5415 $clean_files{$output} = MAINTAINER_CLEAN;
5416 }
5418 # This is a helper for both lex and yacc.
5419 sub yacc_lex_finish_helper
5420 {
5421 return if defined $language_scratch{'lex-yacc-done'};
5422 $language_scratch{'lex-yacc-done'} = 1;
5424 # If there is more than one distinct yacc (resp lex) source file
5425 # in a given directory, then the `ylwrap' program is required to
5426 # allow parallel builds to work correctly. FIXME: for now, no
5427 # line number.
5428 require_conf_file ($configure_ac, FOREIGN, 'ylwrap');
5429 &define_variable ('YLWRAP', "$am_config_aux_dir/ylwrap", INTERNAL);
5430 }
5432 sub lang_yacc_finish
5433 {
5434 return if defined $language_scratch{'yacc-done'};
5435 $language_scratch{'yacc-done'} = 1;
5437 reject_var 'YACCFLAGS', "`YACCFLAGS' obsolete; use `YFLAGS' instead";
5439 &yacc_lex_finish_helper
5440 if count_files_for_language ('yacc') > 1;
5441 }
5444 sub lang_lex_finish
5445 {
5446 return if defined $language_scratch{'lex-done'};
5447 $language_scratch{'lex-done'} = 1;
5449 &yacc_lex_finish_helper
5450 if count_files_for_language ('lex') > 1;
5451 }
5454 # Given a hash table of linker names, pick the name that has the most
5455 # precedence. This is lame, but something has to have global
5456 # knowledge in order to eliminate the conflict. Add more linkers as
5457 # required.
5458 sub resolve_linker
5459 {
5460 my (%linkers) = @_;
5462 foreach my $l (qw(GCJLINK CXXLINK F77LINK FCLINK OBJCLINK))
5463 {
5464 return $l if defined $linkers{$l};
5465 }
5466 return 'LINK';
5467 }
5469 # Called to indicate that an extension was used.
5470 sub saw_extension
5471 {
5472 my ($ext) = @_;
5473 if (! defined $extension_seen{$ext})
5474 {
5475 $extension_seen{$ext} = 1;
5476 }
5477 else
5478 {
5479 ++$extension_seen{$ext};
5480 }
5481 }
5483 # Return the number of files seen for a given language. Knows about
5484 # special cases we care about. FIXME: this is hideous. We need
5485 # something that involves real language objects. For instance yacc
5486 # and yaccxx could both derive from a common yacc class which would
5487 # know about the strange ylwrap requirement. (Or better yet we could
5488 # just not support legacy yacc!)
5489 sub count_files_for_language
5490 {
5491 my ($name) = @_;
5493 my @names;
5494 if ($name eq 'yacc' || $name eq 'yaccxx')
5495 {
5496 @names = ('yacc', 'yaccxx');
5497 }
5498 elsif ($name eq 'lex' || $name eq 'lexxx')
5499 {
5500 @names = ('lex', 'lexxx');
5501 }
5502 else
5503 {
5504 @names = ($name);
5505 }
5507 my $r = 0;
5508 foreach $name (@names)
5509 {
5510 my $lang = $languages{$name};
5511 foreach my $ext (@{$lang->extensions})
5512 {
5513 $r += $extension_seen{$ext}
5514 if defined $extension_seen{$ext};
5515 }
5516 }
5518 return $r
5519 }
5521 # Called to ask whether source files have been seen . If HEADERS is 1,
5522 # headers can be included.
5523 sub saw_sources_p
5524 {
5525 my ($headers) = @_;
5527 # count all the sources
5528 my $count = 0;
5529 foreach my $val (values %extension_seen)
5530 {
5531 $count += $val;
5532 }
5534 if (!$headers)
5535 {
5536 $count -= count_files_for_language ('header');
5537 }
5539 return $count > 0;
5540 }
5543 # register_language (%ATTRIBUTE)
5544 # ------------------------------
5545 # Register a single language.
5546 # Each %ATTRIBUTE is of the form ATTRIBUTE => VALUE.
5547 sub register_language (%)
5548 {
5549 my (%option) = @_;
5551 # Set the defaults.
5552 $option{'ansi'} = 0
5553 unless defined $option{'ansi'};
5554 $option{'autodep'} = 'no'
5555 unless defined $option{'autodep'};
5556 $option{'linker'} = ''
5557 unless defined $option{'linker'};
5558 $option{'flags'} = []
5559 unless defined $option{'flags'};
5560 $option{'output_extensions'} = sub { return ( '.$(OBJEXT)', '.lo' ) }
5561 unless defined $option{'output_extensions'};
5562 $option{'nodist_specific'} = 0
5563 unless defined $option{'nodist_specific'};
5565 my $lang = new Language (%option);
5567 # Fill indexes.
5568 $extension_map{$_} = $lang->name foreach @{$lang->extensions};
5569 $languages{$lang->name} = $lang;
5570 my $link = $lang->linker;
5571 if ($link)
5572 {
5573 if (exists $link_languages{$link})
5574 {
5575 prog_error ("`$link' has different definitions in "
5576 . $lang->name . " and " . $link_languages{$link}->name)
5577 if $lang->link ne $link_languages{$link}->link;
5578 }
5579 else
5580 {
5581 $link_languages{$link} = $lang;
5582 }
5583 }
5585 # Update the pattern of known extensions.
5586 accept_extensions (@{$lang->extensions});
5588 # Upate the $suffix_rule map.
5589 foreach my $suffix (@{$lang->extensions})
5590 {
5591 foreach my $dest (&{$lang->output_extensions} ($suffix))
5592 {
5593 register_suffix_rule (INTERNAL, $suffix, $dest);
5594 }
5595 }
5596 }
5598 # derive_suffix ($EXT, $OBJ)
5599 # --------------------------
5600 # This function is used to find a path from a user-specified suffix $EXT
5601 # to $OBJ or to some other suffix we recognize internally, e.g. `cc'.
5602 sub derive_suffix ($$)
5603 {
5604 my ($source_ext, $obj) = @_;
5606 while (! $extension_map{$source_ext}
5607 && $source_ext ne $obj
5608 && exists $suffix_rules->{$source_ext}
5609 && exists $suffix_rules->{$source_ext}{$obj})
5610 {
5611 $source_ext = $suffix_rules->{$source_ext}{$obj}[0];
5612 }
5614 return $source_ext;
5615 }
5618 ################################################################
5620 # Pretty-print something and append to output_rules.
5621 sub pretty_print_rule
5622 {
5623 $output_rules .= &makefile_wrap (@_);
5624 }
5627 ################################################################
5630 ## -------------------------------- ##
5631 ## Handling the conditional stack. ##
5632 ## -------------------------------- ##
5635 # $STRING
5636 # make_conditional_string ($NEGATE, $COND)
5637 # ----------------------------------------
5638 sub make_conditional_string ($$)
5639 {
5640 my ($negate, $cond) = @_;
5641 $cond = "${cond}_TRUE"
5642 unless $cond =~ /^TRUE|FALSE$/;
5643 $cond = Automake::Condition::conditional_negate ($cond)
5644 if $negate;
5645 return $cond;
5646 }
5649 # $COND
5650 # cond_stack_if ($NEGATE, $COND, $WHERE)
5651 # --------------------------------------
5652 sub cond_stack_if ($$$)
5653 {
5654 my ($negate, $cond, $where) = @_;
5656 error $where, "$cond does not appear in AM_CONDITIONAL"
5657 if ! $configure_cond{$cond} && $cond !~ /^TRUE|FALSE$/;
5659 push (@cond_stack, make_conditional_string ($negate, $cond));
5661 return new Automake::Condition (@cond_stack);
5662 }
5665 # $COND
5666 # cond_stack_else ($NEGATE, $COND, $WHERE)
5667 # ----------------------------------------
5668 sub cond_stack_else ($$$)
5669 {
5670 my ($negate, $cond, $where) = @_;
5672 if (! @cond_stack)
5673 {
5674 error $where, "else without if";
5675 return FALSE;
5676 }
5678 $cond_stack[$#cond_stack] =
5679 Automake::Condition::conditional_negate ($cond_stack[$#cond_stack]);
5681 # If $COND is given, check against it.
5682 if (defined $cond)
5683 {
5684 $cond = make_conditional_string ($negate, $cond);
5686 error ($where, "else reminder ($negate$cond) incompatible with "
5687 . "current conditional: $cond_stack[$#cond_stack]")
5688 if $cond_stack[$#cond_stack] ne $cond;
5689 }
5691 return new Automake::Condition (@cond_stack);
5692 }
5695 # $COND
5696 # cond_stack_endif ($NEGATE, $COND, $WHERE)
5697 # -----------------------------------------
5698 sub cond_stack_endif ($$$)
5699 {
5700 my ($negate, $cond, $where) = @_;
5701 my $old_cond;
5703 if (! @cond_stack)
5704 {
5705 error $where, "endif without if";
5706 return TRUE;
5707 }
5709 # If $COND is given, check against it.
5710 if (defined $cond)
5711 {
5712 $cond = make_conditional_string ($negate, $cond);
5714 error ($where, "endif reminder ($negate$cond) incompatible with "
5715 . "current conditional: $cond_stack[$#cond_stack]")
5716 if $cond_stack[$#cond_stack] ne $cond;
5717 }
5719 pop @cond_stack;
5721 return new Automake::Condition (@cond_stack);
5722 }
5728 ## ------------------------ ##
5729 ## Handling the variables. ##
5730 ## ------------------------ ##
5733 # &define_pretty_variable ($VAR, $COND, $WHERE, @VALUE)
5734 # -----------------------------------------------------
5735 # Like define_variable, but the value is a list, and the variable may
5736 # be defined conditionally. The second argument is the Condition
5737 # under which the value should be defined; this should be the empty
5738 # string to define the variable unconditionally. The third argument
5739 # is a list holding the values to use for the variable. The value is
5740 # pretty printed in the output file.
5741 sub define_pretty_variable ($$$@)
5742 {
5743 my ($var, $cond, $where, @value) = @_;
5745 if (! vardef ($var, $cond))
5746 {
5747 Automake::Variable::define ($var, VAR_AUTOMAKE, '', $cond, "@value",
5748 '', $where, VAR_PRETTY);
5749 rvar ($var)->rdef ($cond)->set_seen;
5750 }
5751 }
5754 # define_variable ($VAR, $VALUE, $WHERE)
5755 # --------------------------------------
5756 # Define a new Automake Makefile variable VAR to VALUE, but only if
5757 # not already defined.
5758 sub define_variable ($$$)
5759 {
5760 my ($var, $value, $where) = @_;
5761 define_pretty_variable ($var, TRUE, $where, $value);
5762 }
5765 # define_files_variable ($VAR, \@BASENAME, $EXTENSION, $WHERE)
5766 # -----------------------------------------------------------
5767 # Define the $VAR which content is the list of file names composed of
5768 # a @BASENAME and the $EXTENSION.
5769 sub define_files_variable ($\@$$)
5770 {
5771 my ($var, $basename, $extension, $where) = @_;
5772 define_variable ($var,
5773 join (' ', map { "$_.$extension" } @$basename),
5774 $where);
5775 }
5778 # Like define_variable, but define a variable to be the configure
5779 # substitution by the same name.
5780 sub define_configure_variable ($)
5781 {
5782 my ($var) = @_;
5784 my $pretty = VAR_ASIS;
5785 my $owner = VAR_CONFIGURE;
5787 # Do not output the ANSI2KNR configure variable -- we AC_SUBST
5788 # it in protos.m4, but later redefine it elsewhere. This is
5789 # pretty hacky. We also don't output AMDEPBACKSLASH: it might
5790 # be subst'd by `\', which certainly would not be appreciated by
5791 # Make.
5792 if ($var eq 'ANSI2KNR' || $var eq 'AMDEPBACKSLASH')
5793 {
5794 $pretty = VAR_SILENT;
5795 $owner = VAR_AUTOMAKE;
5796 }
5798 Automake::Variable::define ($var, $owner, '', TRUE, subst $var,
5799 '', $configure_vars{$var}, $pretty);
5800 }
5803 # define_compiler_variable ($LANG)
5804 # --------------------------------
5805 # Define a compiler variable. We also handle defining the `LT'
5806 # version of the command when using libtool.
5807 sub define_compiler_variable ($)
5808 {
5809 my ($lang) = @_;
5811 my ($var, $value) = ($lang->compiler, $lang->compile);
5812 my $libtool_tag = '';
5813 $libtool_tag = '--tag=' . $lang->libtool_tag . ' '
5814 if $lang->libtool_tag && exists $libtool_tags{$lang->libtool_tag};
5815 &define_variable ($var, $value, INTERNAL);
5816 &define_variable ("LT$var",
5817 "\$(LIBTOOL) $libtool_tag\$(AM_LIBTOOLFLAGS) "
5818 . "\$(LIBTOOLFLAGS) --mode=compile $value",
5819 INTERNAL)
5820 if var ('LIBTOOL');
5821 }
5824 # define_linker_variable ($LANG)
5825 # ------------------------------
5826 # Define linker variables.
5827 sub define_linker_variable ($)
5828 {
5829 my ($lang) = @_;
5831 my $libtool_tag = '';
5832 $libtool_tag = '--tag=' . $lang->libtool_tag . ' '
5833 if $lang->libtool_tag && exists $libtool_tags{$lang->libtool_tag};
5834 # CCLD = $(CC).
5835 &define_variable ($lang->lder, $lang->ld, INTERNAL);
5836 # CCLINK = $(CCLD) blah blah...
5837 &define_variable ($lang->linker,
5838 ((var ('LIBTOOL') ?
5839 "\$(LIBTOOL) $libtool_tag\$(AM_LIBTOOLFLAGS) "
5840 . "\$(LIBTOOLFLAGS) --mode=link " : '')
5841 . $lang->link),
5842 INTERNAL);
5843 }
5845 sub define_per_target_linker_variable ($$)
5846 {
5847 my ($linker, $target) = @_;
5849 # If the user wrote a custom link command, we don't define ours.
5850 return "${target}_LINK"
5851 if set_seen "${target}_LINK";
5853 my $xlink = $linker ? $linker : 'LINK';
5855 my $lang = $link_languages{$xlink};
5856 prog_error "Unknown language for linker variable `$xlink'"
5857 unless $lang;
5859 my $link_command = $lang->link;
5860 if (var 'LIBTOOL')
5861 {
5862 my $libtool_tag = '';
5863 $libtool_tag = '--tag=' . $lang->libtool_tag . ' '
5864 if $lang->libtool_tag && exists $libtool_tags{$lang->libtool_tag};
5866 $link_command =
5867 "\$(LIBTOOL) $libtool_tag\$(AM_LIBTOOLFLAGS) \$(LIBTOOLFLAGS) "
5868 . "--mode=link " . $link_command;
5869 }
5871 # Rewrite each occurrence of `AM_$flag' in the link
5872 # command into `${derived}_$flag' if it exists.
5873 my $orig_command = $link_command;
5874 my @flags = (@{$lang->flags}, 'LDFLAGS');
5875 push @flags, 'LIBTOOLFLAGS' if var 'LIBTOOL';
5876 for my $flag (@flags)
5877 {
5878 my $val = "${target}_$flag";
5879 $link_command =~ s/\(AM_$flag\)/\($val\)/
5880 if set_seen ($val);
5881 }
5883 # If the computed command is the same as the generic command, use
5884 # the command linker variable.
5885 return $lang->linker
5886 if $link_command eq $orig_command;
5888 &define_variable ("${target}_LINK", $link_command, INTERNAL);
5889 return "${target}_LINK";
5890 }
5892 ################################################################
5894 # &check_trailing_slash ($WHERE, $LINE)
5895 # --------------------------------------
5896 # Return 1 iff $LINE ends with a slash.
5897 # Might modify $LINE.
5898 sub check_trailing_slash ($\$)
5899 {
5900 my ($where, $line) = @_;
5902 # Ignore `##' lines.
5903 return 0 if $$line =~ /$IGNORE_PATTERN/o;
5905 # Catch and fix a common error.
5906 msg "syntax", $where, "whitespace following trailing backslash"
5907 if $$line =~ s/\\\s+\n$/\\\n/;
5909 return $$line =~ /\\$/;
5910 }
5913 # &read_am_file ($AMFILE, $WHERE)
5914 # -------------------------------
5915 # Read Makefile.am and set up %contents. Simultaneously copy lines
5916 # from Makefile.am into $output_trailer, or define variables as
5917 # appropriate. NOTE we put rules in the trailer section. We want
5918 # user rules to come after our generated stuff.
5919 sub read_am_file ($$)
5920 {
5921 my ($amfile, $where) = @_;
5923 my $am_file = new Automake::XFile ("< $amfile");
5924 verb "reading $amfile";
5926 # Keep track of the youngest output dependency.
5927 my $mtime = mtime $amfile;
5928 $output_deps_greatest_timestamp = $mtime
5929 if $mtime > $output_deps_greatest_timestamp;
5931 my $spacing = '';
5932 my $comment = '';
5933 my $blank = 0;
5934 my $saw_bk = 0;
5935 my $var_look = VAR_ASIS;
5937 use constant IN_VAR_DEF => 0;
5938 use constant IN_RULE_DEF => 1;
5939 use constant IN_COMMENT => 2;
5940 my $prev_state = IN_RULE_DEF;
5942 while ($_ = $am_file->getline)
5943 {
5944 $where->set ("$amfile:$.");
5945 if (/$IGNORE_PATTERN/o)
5946 {
5947 # Merely delete comments beginning with two hashes.
5948 }
5949 elsif (/$WHITE_PATTERN/o)
5950 {
5951 error $where, "blank line following trailing backslash"
5952 if $saw_bk;
5953 # Stick a single white line before the incoming macro or rule.
5954 $spacing = "\n";
5955 $blank = 1;
5956 # Flush all comments seen so far.
5957 if ($comment ne '')
5958 {
5959 $output_vars .= $comment;
5960 $comment = '';
5961 }
5962 }
5963 elsif (/$COMMENT_PATTERN/o)
5964 {
5965 # Stick comments before the incoming macro or rule. Make
5966 # sure a blank line precedes the first block of comments.
5967 $spacing = "\n" unless $blank;
5968 $blank = 1;
5969 $comment .= $spacing . $_;
5970 $spacing = '';
5971 $prev_state = IN_COMMENT;
5972 }
5973 else
5974 {
5975 last;
5976 }
5977 $saw_bk = check_trailing_slash ($where, $_);
5978 }
5980 # We save the conditional stack on entry, and then check to make
5981 # sure it is the same on exit. This lets us conditionally include
5982 # other files.
5983 my @saved_cond_stack = @cond_stack;
5984 my $cond = new Automake::Condition (@cond_stack);
5986 my $last_var_name = '';
5987 my $last_var_type = '';
5988 my $last_var_value = '';
5989 my $last_where;
5990 # FIXME: shouldn't use $_ in this loop; it is too big.
5991 while ($_)
5992 {
5993 $where->set ("$amfile:$.");
5995 # Make sure the line is \n-terminated.
5996 chomp;
5997 $_ .= "\n";
5999 # Don't look at MAINTAINER_MODE_TRUE here. That shouldn't be
6000 # used by users. @MAINT@ is an anachronism now.
6001 $_ =~ s/\@MAINT\@//g
6002 unless $seen_maint_mode;
6004 my $new_saw_bk = check_trailing_slash ($where, $_);
6006 if (/$IGNORE_PATTERN/o)
6007 {
6008 # Merely delete comments beginning with two hashes.
6010 # Keep any backslash from the previous line.
6011 $new_saw_bk = $saw_bk;
6012 }
6013 elsif (/$WHITE_PATTERN/o)
6014 {
6015 # Stick a single white line before the incoming macro or rule.
6016 $spacing = "\n";
6017 error $where, "blank line following trailing backslash"
6018 if $saw_bk;
6019 }
6020 elsif (/$COMMENT_PATTERN/o)
6021 {
6022 # Stick comments before the incoming macro or rule.
6023 $comment .= $spacing . $_;
6024 $spacing = '';
6025 error $where, "comment following trailing backslash"
6026 if $saw_bk && $comment eq '';
6027 $prev_state = IN_COMMENT;
6028 }
6029 elsif ($saw_bk)
6030 {
6031 if ($prev_state == IN_RULE_DEF)
6032 {
6033 my $cond = new Automake::Condition @cond_stack;
6034 $output_trailer .= $cond->subst_string;
6035 $output_trailer .= $_;
6036 }
6037 elsif ($prev_state == IN_COMMENT)
6038 {
6039 # If the line doesn't start with a `#', add it.
6040 # We do this because a continued comment like
6041 # # A = foo \
6042 # bar \
6043 # baz
6044 # is not portable. BSD make doesn't honor
6045 # escaped newlines in comments.
6046 s/^#?/#/;
6047 $comment .= $spacing . $_;
6048 }
6049 else # $prev_state == IN_VAR_DEF
6050 {
6051 $last_var_value .= ' '
6052 unless $last_var_value =~ /\s$/;
6053 $last_var_value .= $_;
6055 if (!/\\$/)
6056 {
6057 Automake::Variable::define ($last_var_name, VAR_MAKEFILE,
6058 $last_var_type, $cond,
6059 $last_var_value, $comment,
6060 $last_where, VAR_ASIS)
6061 if $cond != FALSE;
6062 $comment = $spacing = '';
6063 }
6064 }
6065 }
6067 elsif (/$IF_PATTERN/o)
6068 {
6069 $cond = cond_stack_if ($1, $2, $where);
6070 }
6071 elsif (/$ELSE_PATTERN/o)
6072 {
6073 $cond = cond_stack_else ($1, $2, $where);
6074 }
6075 elsif (/$ENDIF_PATTERN/o)
6076 {
6077 $cond = cond_stack_endif ($1, $2, $where);
6078 }
6080 elsif (/$RULE_PATTERN/o)
6081 {
6082 # Found a rule.
6083 $prev_state = IN_RULE_DEF;
6085 # For now we have to output all definitions of user rules
6086 # and can't diagnose duplicates (see the comment in
6087 # rule_define). So we go on and ignore the return value.
6088 Automake::Rule::define ($1, $amfile, RULE_USER, $cond, $where);
6090 check_variable_expansions ($_, $where);
6092 $output_trailer .= $comment . $spacing;
6093 my $cond = new Automake::Condition @cond_stack;
6094 $output_trailer .= $cond->subst_string;
6095 $output_trailer .= $_;
6096 $comment = $spacing = '';
6097 }
6098 elsif (/$ASSIGNMENT_PATTERN/o)
6099 {
6100 # Found a macro definition.
6101 $prev_state = IN_VAR_DEF;
6102 $last_var_name = $1;
6103 $last_var_type = $2;
6104 $last_var_value = $3;
6105 $last_where = $where->clone;
6106 if ($3 ne '' && substr ($3, -1) eq "\\")
6107 {
6108 # We preserve the `\' because otherwise the long lines
6109 # that are generated will be truncated by broken
6110 # `sed's.
6111 $last_var_value = $3 . "\n";
6112 }
6113 # Normally we try to output variable definitions in the
6114 # same format they were input. However, POSIX compliant
6115 # systems are not required to support lines longer than
6116 # 2048 bytes (most notably, some sed implementation are
6117 # limited to 4000 bytes, and sed is used by config.status
6118 # to rewrite Makefile.in into Makefile). Moreover nobody
6119 # would really write such long lines by hand since it is
6120 # hardly maintainable. So if a line is longer that 1000
6121 # bytes (an arbitrary limit), assume it has been
6122 # automatically generated by some tools, and flatten the
6123 # variable definition. Otherwise, keep the variable as it
6124 # as been input.
6125 $var_look = VAR_PRETTY if length ($last_var_value) >= 1000;
6127 if (!/\\$/)
6128 {
6129 Automake::Variable::define ($last_var_name, VAR_MAKEFILE,
6130 $last_var_type, $cond,
6131 $last_var_value, $comment,
6132 $last_where, $var_look)
6133 if $cond != FALSE;
6134 $comment = $spacing = '';
6135 $var_look = VAR_ASIS;
6136 }
6137 }
6138 elsif (/$INCLUDE_PATTERN/o)
6139 {
6140 my $path = $1;
6142 if ($path =~ s/^\$\(top_srcdir\)\///)
6143 {
6144 push (@include_stack, "\$\(top_srcdir\)/$path");
6145 # Distribute any included file.
6147 # Always use the $(top_srcdir) prefix in DIST_COMMON,
6148 # otherwise OSF make will implicitly copy the included
6149 # file in the build tree during `make distdir' to satisfy
6150 # the dependency.
6151 # (subdircond2.test and subdircond3.test will fail.)
6152 push_dist_common ("\$\(top_srcdir\)/$path");
6153 }
6154 else
6155 {
6156 $path =~ s/\$\(srcdir\)\///;
6157 push (@include_stack, "\$\(srcdir\)/$path");
6158 # Always use the $(srcdir) prefix in DIST_COMMON,
6159 # otherwise OSF make will implicitly copy the included
6160 # file in the build tree during `make distdir' to satisfy
6161 # the dependency.
6162 # (subdircond2.test and subdircond3.test will fail.)
6163 push_dist_common ("\$\(srcdir\)/$path");
6164 $path = $relative_dir . "/" . $path if $relative_dir ne '.';
6165 }
6166 $where->push_context ("`$path' included from here");
6167 &read_am_file ($path, $where);
6168 $where->pop_context;
6169 }
6170 else
6171 {
6172 # This isn't an error; it is probably a continued rule.
6173 # In fact, this is what we assume.
6174 $prev_state = IN_RULE_DEF;
6175 check_variable_expansions ($_, $where);
6176 $output_trailer .= $comment . $spacing;
6177 my $cond = new Automake::Condition @cond_stack;
6178 $output_trailer .= $cond->subst_string;
6179 $output_trailer .= $_;
6180 $comment = $spacing = '';
6181 error $where, "`#' comment at start of rule is unportable"
6182 if $_ =~ /^\t\s*\#/;
6183 }
6185 $saw_bk = $new_saw_bk;
6186 $_ = $am_file->getline;
6187 }
6189 $output_trailer .= $comment;
6191 error ($where, "trailing backslash on last line")
6192 if $saw_bk;
6194 error ($where, (@cond_stack ? "unterminated conditionals: @cond_stack"
6195 : "too many conditionals closed in include file"))
6196 if "@saved_cond_stack" ne "@cond_stack";
6197 }
6200 # define_standard_variables ()
6201 # ----------------------------
6202 # A helper for read_main_am_file which initializes configure variables
6203 # and variables from header-vars.am.
6204 sub define_standard_variables
6205 {
6206 my $saved_output_vars = $output_vars;
6207 my ($comments, undef, $rules) =
6208 file_contents_internal (1, "$libdir/am/header-vars.am",
6209 new Automake::Location);
6211 foreach my $var (sort keys %configure_vars)
6212 {
6213 &define_configure_variable ($var);
6214 }
6216 $output_vars .= $comments . $rules;
6217 }
6219 # Read main am file.
6220 sub read_main_am_file
6221 {
6222 my ($amfile) = @_;
6224 # This supports the strange variable tricks we are about to play.
6225 prog_error (macros_dump () . "variable defined before read_main_am_file")
6226 if (scalar (variables) > 0);
6228 # Generate copyright header for generated Makefile.in.
6229 # We do discard the output of predefined variables, handled below.
6230 $output_vars = ("# $in_file_name generated by automake "
6231 . $VERSION . " from $am_file_name.\n");
6232 $output_vars .= '# ' . subst ('configure_input') . "\n";
6233 $output_vars .= $gen_copyright;
6235 # We want to predefine as many variables as possible. This lets
6236 # the user set them with `+=' in Makefile.am.
6237 &define_standard_variables;
6239 # Read user file, which might override some of our values.
6240 &read_am_file ($amfile, new Automake::Location);
6241 }
6245 ################################################################
6247 # $FLATTENED
6248 # &flatten ($STRING)
6249 # ------------------
6250 # Flatten the $STRING and return the result.
6251 sub flatten
6252 {
6253 $_ = shift;
6255 s/\\\n//somg;
6256 s/\s+/ /g;
6257 s/^ //;
6258 s/ $//;
6260 return $_;
6261 }
6263 # transform($TOKEN, \%PAIRS)
6264 # ==========================
6265 # If ($TOKEN, $VAL) is in %PAIRS:
6266 # - replaces %$TOKEN% with $VAL,
6267 # - enables/disables ?$TOKEN? and ?!$TOKEN?,
6268 # - replaces %?$TOKEN% with TRUE or FALSE.
6269 sub transform($$)
6270 {
6271 my ($token, $transform) = @_;
6273 if (substr ($token, 0, 1) eq '%')
6274 {
6275 my $cond = (substr ($token, 1, 1) eq '?') ? 1 : 0;
6276 $token = substr ($token, 1 + $cond, -1);
6277 my $val = $transform->{$token};
6278 prog_error "Unknown %token% `$token'" unless defined $val;
6279 if ($cond)
6280 {
6281 return $val ? 'TRUE' : 'FALSE';
6282 }
6283 else
6284 {
6285 return $val;
6286 }
6287 }
6288 # Now $token is '?xxx?' or '?!xxx?'.
6289 my $neg = (substr ($token, 1, 1) eq '!') ? 1 : 0;
6290 $token = substr ($token, 1 + $neg, -1);
6291 my $val = $transform->{$token};
6292 prog_error "Unknown ?token? `$token' (neg = $neg)" unless defined $val;
6293 return (!!$val == $neg) ? '##%' : '';
6294 }
6296 # @PARAGRAPHS
6297 # &make_paragraphs ($MAKEFILE, [%TRANSFORM])
6298 # ------------------------------------------
6299 # Load a $MAKEFILE, apply the %TRANSFORM, and return it as a list of
6300 # paragraphs.
6301 sub make_paragraphs ($%)
6302 {
6303 my ($file, %transform) = @_;
6305 # Complete %transform with global options.
6306 # Note that %transform goes last, so it overrides global options.
6307 %transform = ('CYGNUS' => !! option 'cygnus',
6308 'MAINTAINER-MODE'
6309 => $seen_maint_mode ? subst ('MAINTAINER_MODE_TRUE') : '',
6311 'BZIP2' => !! option 'dist-bzip2',
6312 'COMPRESS' => !! option 'dist-tarZ',
6313 'GZIP' => ! option 'no-dist-gzip',
6314 'SHAR' => !! option 'dist-shar',
6315 'ZIP' => !! option 'dist-zip',
6317 'INSTALL-INFO' => ! option 'no-installinfo',
6318 'INSTALL-MAN' => ! option 'no-installman',
6319 'CK-NEWS' => !! option 'check-news',
6321 'SUBDIRS' => !! var ('SUBDIRS'),
6322 'TOPDIR' => backname ($relative_dir),
6323 'TOPDIR_P' => $relative_dir eq '.',
6325 'BUILD' => ($seen_canonical >= AC_CANONICAL_BUILD),
6326 'HOST' => ($seen_canonical >= AC_CANONICAL_HOST),
6327 'TARGET' => ($seen_canonical >= AC_CANONICAL_TARGET),
6329 'LIBTOOL' => !! var ('LIBTOOL'),
6330 'NONLIBTOOL' => 1,
6331 'FIRST' => ! $transformed_files{$file},
6332 %transform);
6334 $transformed_files{$file} = 1;
6335 $_ = $am_file_cache{$file};
6337 if (! defined $_)
6338 {
6339 verb "reading $file";
6340 # Swallow the whole file.
6341 my $fc_file = new Automake::XFile "< $file";
6342 my $saved_dollar_slash = $/;
6343 undef $/;
6344 $_ = $fc_file->getline;
6345 $/ = $saved_dollar_slash;
6346 $fc_file->close;
6348 # Remove ##-comments.
6349 # Besides we don't need more than two consecutive new-lines.
6350 s/(?:$IGNORE_PATTERN|(?<=\n\n)\n+)//gom;
6352 $am_file_cache{$file} = $_;
6353 }
6355 # Substitute Automake template tokens.
6356 s/(?:%\??[\w\-]+%|\?!?[\w\-]+\?)/transform($&, \%transform)/ge;
6357 # transform() may have added some ##%-comments to strip.
6358 # (we use `##%' instead of `##' so we can distinguish ##%##%##% from
6359 # ####### and do not remove the latter.)
6360 s/^[ \t]*(?:##%)+.*\n//gm;
6362 # Split at unescaped new lines.
6363 my @lines = split (/(?<!\\)\n/, $_);
6364 my @res;
6366 while (defined ($_ = shift @lines))
6367 {
6368 my $paragraph = $_;
6369 # If we are a rule, eat as long as we start with a tab.
6370 if (/$RULE_PATTERN/smo)
6371 {
6372 while (defined ($_ = shift @lines) && $_ =~ /^\t/)
6373 {
6374 $paragraph .= "\n$_";
6375 }
6376 unshift (@lines, $_);
6377 }
6379 # If we are a comments, eat as much comments as you can.
6380 elsif (/$COMMENT_PATTERN/smo)
6381 {
6382 while (defined ($_ = shift @lines)
6383 && $_ =~ /$COMMENT_PATTERN/smo)
6384 {
6385 $paragraph .= "\n$_";
6386 }
6387 unshift (@lines, $_);
6388 }
6390 push @res, $paragraph;
6391 }
6393 return @res;
6394 }
6398 # ($COMMENT, $VARIABLES, $RULES)
6399 # &file_contents_internal ($IS_AM, $FILE, $WHERE, [%TRANSFORM])
6400 # -------------------------------------------------------------
6401 # Return contents of a file from $libdir/am, automatically skipping
6402 # macros or rules which are already known. $IS_AM iff the caller is
6403 # reading an Automake file (as opposed to the user's Makefile.am).
6404 sub file_contents_internal ($$$%)
6405 {
6406 my ($is_am, $file, $where, %transform) = @_;
6408 $where->set ($file);
6410 my $result_vars = '';
6411 my $result_rules = '';
6412 my $comment = '';
6413 my $spacing = '';
6415 # The following flags are used to track rules spanning across
6416 # multiple paragraphs.
6417 my $is_rule = 0; # 1 if we are processing a rule.
6418 my $discard_rule = 0; # 1 if the current rule should not be output.
6420 # We save the conditional stack on entry, and then check to make
6421 # sure it is the same on exit. This lets us conditionally include
6422 # other files.
6423 my @saved_cond_stack = @cond_stack;
6424 my $cond = new Automake::Condition (@cond_stack);
6426 foreach (make_paragraphs ($file, %transform))
6427 {
6428 # FIXME: no line number available.
6429 $where->set ($file);
6431 # Sanity checks.
6432 error $where, "blank line following trailing backslash:\n$_"
6433 if /\\$/;
6434 error $where, "comment following trailing backslash:\n$_"
6435 if /\\#/;
6437 if (/^$/)
6438 {
6439 $is_rule = 0;
6440 # Stick empty line before the incoming macro or rule.
6441 $spacing = "\n";
6442 }
6443 elsif (/$COMMENT_PATTERN/mso)
6444 {
6445 $is_rule = 0;
6446 # Stick comments before the incoming macro or rule.
6447 $comment = "$_\n";
6448 }
6450 # Handle inclusion of other files.
6451 elsif (/$INCLUDE_PATTERN/o)
6452 {
6453 if ($cond != FALSE)
6454 {
6455 my $file = ($is_am ? "$libdir/am/" : '') . $1;
6456 $where->push_context ("`$file' included from here");
6457 # N-ary `.=' fails.
6458 my ($com, $vars, $rules)
6459 = file_contents_internal ($is_am, $file, $where, %transform);
6460 $where->pop_context;
6461 $comment .= $com;
6462 $result_vars .= $vars;
6463 $result_rules .= $rules;
6464 }
6465 }
6467 # Handling the conditionals.
6468 elsif (/$IF_PATTERN/o)
6469 {
6470 $cond = cond_stack_if ($1, $2, $file);
6471 }
6472 elsif (/$ELSE_PATTERN/o)
6473 {
6474 $cond = cond_stack_else ($1, $2, $file);
6475 }
6476 elsif (/$ENDIF_PATTERN/o)
6477 {
6478 $cond = cond_stack_endif ($1, $2, $file);
6479 }
6481 # Handling rules.
6482 elsif (/$RULE_PATTERN/mso)
6483 {
6484 $is_rule = 1;
6485 $discard_rule = 0;
6486 # Separate relationship from optional actions: the first
6487 # `new-line tab" not preceded by backslash (continuation
6488 # line).
6489 my $paragraph = $_;
6490 /^(.*?)(?:(?<!\\)\n(\t.*))?$/s;
6491 my ($relationship, $actions) = ($1, $2 || '');
6493 # Separate targets from dependencies: the first colon.
6494 $relationship =~ /^([^:]+\S+) *: *(.*)$/som;
6495 my ($targets, $dependencies) = ($1, $2);
6496 # Remove the escaped new lines.
6497 # I don't know why, but I have to use a tmp $flat_deps.
6498 my $flat_deps = &flatten ($dependencies);
6499 my @deps = split (' ', $flat_deps);
6501 foreach (split (' ' , $targets))
6502 {
6503 # FIXME: 1. We are not robust to people defining several targets
6504 # at once, only some of them being in %dependencies. The
6505 # actions from the targets in %dependencies are usually generated
6506 # from the content of %actions, but if some targets in $targets
6507 # are not in %dependencies the ELSE branch will output
6508 # a rule for all $targets (i.e. the targets which are both
6509 # in %dependencies and $targets will have two rules).
6511 # FIXME: 2. The logic here is not able to output a
6512 # multi-paragraph rule several time (e.g. for each condition
6513 # it is defined for) because it only knows the first paragraph.
6515 # FIXME: 3. We are not robust to people defining a subset
6516 # of a previously defined "multiple-target" rule. E.g.
6517 # `foo:' after `foo bar:'.
6519 # Output only if not in FALSE.
6520 if (defined $dependencies{$_} && $cond != FALSE)
6521 {
6522 &depend ($_, @deps);
6523 if ($actions{$_})
6524 {
6525 $actions{$_} .= "\n$actions" if $actions;
6526 }
6527 else
6528 {
6529 $actions{$_} = $actions;
6530 }
6531 }
6532 else
6533 {
6534 # Free-lance dependency. Output the rule for all the
6535 # targets instead of one by one.
6536 my @undefined_conds =
6537 Automake::Rule::define ($targets, $file,
6538 $is_am ? RULE_AUTOMAKE : RULE_USER,
6539 $cond, $where);
6540 for my $undefined_cond (@undefined_conds)
6541 {
6542 my $condparagraph = $paragraph;
6543 $condparagraph =~ s/^/$undefined_cond->subst_string/gme;
6544 $result_rules .= "$spacing$comment$condparagraph\n";
6545 }
6546 if (scalar @undefined_conds == 0)
6547 {
6548 # Remember to discard next paragraphs
6549 # if they belong to this rule.
6550 # (but see also FIXME: #2 above.)
6551 $discard_rule = 1;
6552 }
6553 $comment = $spacing = '';
6554 last;
6555 }
6556 }
6557 }
6559 elsif (/$ASSIGNMENT_PATTERN/mso)
6560 {
6561 my ($var, $type, $val) = ($1, $2, $3);
6562 error $where, "variable `$var' with trailing backslash"
6563 if /\\$/;
6565 $is_rule = 0;
6567 Automake::Variable::define ($var,
6568 $is_am ? VAR_AUTOMAKE : VAR_MAKEFILE,
6569 $type, $cond, $val, $comment, $where,
6570 VAR_ASIS)
6571 if $cond != FALSE;
6573 $comment = $spacing = '';
6574 }
6575 else
6576 {
6577 # This isn't an error; it is probably some tokens which
6578 # configure is supposed to replace, such as `@SET-MAKE@',
6579 # or some part of a rule cut by an if/endif.
6580 if (! $cond->false && ! ($is_rule && $discard_rule))
6581 {
6582 s/^/$cond->subst_string/gme;
6583 $result_rules .= "$spacing$comment$_\n";
6584 }
6585 $comment = $spacing = '';
6586 }
6587 }
6589 error ($where, @cond_stack ?
6590 "unterminated conditionals: @cond_stack" :
6591 "too many conditionals closed in include file")
6592 if "@saved_cond_stack" ne "@cond_stack";
6594 return ($comment, $result_vars, $result_rules);
6595 }
6598 # $CONTENTS
6599 # &file_contents ($BASENAME, $WHERE, [%TRANSFORM])
6600 # ------------------------------------------------
6601 # Return contents of a file from $libdir/am, automatically skipping
6602 # macros or rules which are already known.
6603 sub file_contents ($$%)
6604 {
6605 my ($basename, $where, %transform) = @_;
6606 my ($comments, $variables, $rules) =
6607 file_contents_internal (1, "$libdir/am/$basename.am", $where,
6608 %transform);
6609 return "$comments$variables$rules";
6610 }
6613 # &append_exeext ($MACRO)
6614 # -----------------------
6615 # Macro is an Automake magic macro which primary is PROGRAMS, e.g.
6616 # bin_PROGRAMS. Make sure these programs have $(EXEEXT) appended.
6617 sub append_exeext ($)
6618 {
6619 my ($macro) = @_;
6621 prog_error "append_exeext ($macro)"
6622 unless $macro =~ /_PROGRAMS$/;
6624 transform_variable_recursively
6625 ($macro, $macro, 'am__EXEEXT', 0, INTERNAL,
6626 sub {
6627 my ($subvar, $val, $cond, $full_cond) = @_;
6628 # Append $(EXEEXT) unless the user did it already, or it's a
6629 # @substitution@.
6630 $val .= '$(EXEEXT)' unless $val =~ /(?:\$\(EXEEXT\)$|^[@]\w+[@]$)/;
6631 return $val;
6632 });
6633 }
6636 # @PREFIX
6637 # &am_primary_prefixes ($PRIMARY, $CAN_DIST, @PREFIXES)
6638 # -----------------------------------------------------
6639 # Find all variable prefixes that are used for install directories. A
6640 # prefix `zar' qualifies iff:
6641 #
6642 # * `zardir' is a variable.
6643 # * `zar_PRIMARY' is a variable.
6644 #
6645 # As a side effect, it looks for misspellings. It is an error to have
6646 # a variable ending in a "reserved" suffix whose prefix is unknown, e.g.
6647 # "bin_PROGRAMS". However, unusual prefixes are allowed if a variable
6648 # of the same name (with "dir" appended) exists. For instance, if the
6649 # variable "zardir" is defined, then "zar_PROGRAMS" becomes valid.
6650 # This is to provide a little extra flexibility in those cases which
6651 # need it.
6652 sub am_primary_prefixes ($$@)
6653 {
6654 my ($primary, $can_dist, @prefixes) = @_;
6656 local $_;
6657 my %valid = map { $_ => 0 } @prefixes;
6658 $valid{'EXTRA'} = 0;
6659 foreach my $var (variables $primary)
6660 {
6661 # Automake is allowed to define variables that look like primaries
6662 # but which aren't. E.g. INSTALL_sh_DATA.
6663 # Autoconf can also define variables like INSTALL_DATA, so
6664 # ignore all configure variables (at least those which are not
6665 # redefined in Makefile.am).
6666 # FIXME: We should make sure that these variables are not
6667 # conditionally defined (or else adjust the condition below).
6668 my $def = $var->def (TRUE);
6669 next if $def && $def->owner != VAR_MAKEFILE;
6671 my $varname = $var->name;
6673 if ($varname =~ /^(nobase_)?(dist_|nodist_)?(.*)_[[:alnum:]]+$/)
6674 {
6675 my ($base, $dist, $X) = ($1 || '', $2 || '', $3 || '');
6676 if ($dist ne '' && ! $can_dist)
6677 {
6678 err_var ($var,
6679 "invalid variable `$varname': `dist' is forbidden");
6680 }
6681 # Standard directories must be explicitly allowed.
6682 elsif (! defined $valid{$X} && exists $standard_prefix{$X})
6683 {
6684 err_var ($var,
6685 "`${X}dir' is not a legitimate directory " .
6686 "for `$primary'");
6687 }
6688 # A not explicitly valid directory is allowed if Xdir is defined.
6689 elsif (! defined $valid{$X} &&
6690 $var->requires_variables ("`$varname' is used", "${X}dir"))
6691 {
6692 # Nothing to do. Any error message has been output
6693 # by $var->requires_variables.
6694 }
6695 else
6696 {
6697 # Ensure all extended prefixes are actually used.
6698 $valid{"$base$dist$X"} = 1;
6699 }
6700 }
6701 else
6702 {
6703 prog_error "unexpected variable name: $varname";
6704 }
6705 }
6707 # Return only those which are actually defined.
6708 return sort grep { var ($_ . '_' . $primary) } keys %valid;
6709 }
6712 # Handle `where_HOW' variable magic. Does all lookups, generates
6713 # install code, and possibly generates code to define the primary
6714 # variable. The first argument is the name of the .am file to munge,
6715 # the second argument is the primary variable (e.g. HEADERS), and all
6716 # subsequent arguments are possible installation locations.
6717 #
6718 # Returns list of [$location, $value] pairs, where
6719 # $value's are the values in all where_HOW variable, and $location
6720 # there associated location (the place here their parent variables were
6721 # defined).
6722 #
6723 # FIXME: this should be rewritten to be cleaner. It should be broken
6724 # up into multiple functions.
6725 #
6726 # Usage is: am_install_var (OPTION..., file, HOW, where...)
6727 sub am_install_var
6728 {
6729 my (@args) = @_;
6731 my $do_require = 1;
6732 my $can_dist = 0;
6733 my $default_dist = 0;
6734 while (@args)
6735 {
6736 if ($args[0] eq '-noextra')
6737 {
6738 $do_require = 0;
6739 }
6740 elsif ($args[0] eq '-candist')
6741 {
6742 $can_dist = 1;
6743 }
6744 elsif ($args[0] eq '-defaultdist')
6745 {
6746 $default_dist = 1;
6747 $can_dist = 1;
6748 }
6749 elsif ($args[0] !~ /^-/)
6750 {
6751 last;
6752 }
6753 shift (@args);
6754 }
6756 my ($file, $primary, @prefix) = @args;
6758 # Now that configure substitutions are allowed in where_HOW
6759 # variables, it is an error to actually define the primary. We
6760 # allow `JAVA', as it is customarily used to mean the Java
6761 # interpreter. This is but one of several Java hacks. Similarly,
6762 # `PYTHON' is customarily used to mean the Python interpreter.
6763 reject_var $primary, "`$primary' is an anachronism"
6764 unless $primary eq 'JAVA' || $primary eq 'PYTHON';
6766 # Get the prefixes which are valid and actually used.
6767 @prefix = am_primary_prefixes ($primary, $can_dist, @prefix);
6769 # If a primary includes a configure substitution, then the EXTRA_
6770 # form is required. Otherwise we can't properly do our job.
6771 my $require_extra;
6773 my @used = ();
6774 my @result = ();
6776 foreach my $X (@prefix)
6777 {
6778 my $nodir_name = $X;
6779 my $one_name = $X . '_' . $primary;
6780 my $one_var = var $one_name;
6782 my $strip_subdir = 1;
6783 # If subdir prefix should be preserved, do so.
6784 if ($nodir_name =~ /^nobase_/)
6785 {
6786 $strip_subdir = 0;
6787 $nodir_name =~ s/^nobase_//;
6788 }
6790 # If files should be distributed, do so.
6791 my $dist_p = 0;
6792 if ($can_dist)
6793 {
6794 $dist_p = (($default_dist && $nodir_name !~ /^nodist_/)
6795 || (! $default_dist && $nodir_name =~ /^dist_/));
6796 $nodir_name =~ s/^(dist|nodist)_//;
6797 }
6800 # Use the location of the currently processed variable.
6801 # We are not processing a particular condition, so pick the first
6802 # available.
6803 my $tmpcond = $one_var->conditions->one_cond;
6804 my $where = $one_var->rdef ($tmpcond)->location->clone;
6806 # Append actual contents of where_PRIMARY variable to
6807 # @result, skipping @substitutions@.
6808 foreach my $locvals ($one_var->value_as_list_recursive (location => 1))
6809 {
6810 my ($loc, $value) = @$locvals;
6811 # Skip configure substitutions.
6812 if ($value =~ /^\@.*\@$/)
6813 {
6814 if ($nodir_name eq 'EXTRA')
6815 {
6816 error ($where,
6817 "`$one_name' contains configure substitution, "
6818 . "but shouldn't");
6819 }
6820 # Check here to make sure variables defined in
6821 # configure.ac do not imply that EXTRA_PRIMARY
6822 # must be defined.
6823 elsif (! defined $configure_vars{$one_name})
6824 {
6825 $require_extra = $one_name
6826 if $do_require;
6827 }
6828 }
6829 else
6830 {
6831 push (@result, $locvals);
6832 }
6833 }
6834 # A blatant hack: we rewrite each _PROGRAMS primary to include
6835 # EXEEXT.
6836 append_exeext ($one_name)
6837 if $primary eq 'PROGRAMS';
6838 # "EXTRA" shouldn't be used when generating clean targets,
6839 # all, or install targets. We used to warn if EXTRA_FOO was
6840 # defined uselessly, but this was annoying.
6841 next
6842 if $nodir_name eq 'EXTRA';
6844 if ($nodir_name eq 'check')
6845 {
6846 push (@check, '$(' . $one_name . ')');
6847 }
6848 else
6849 {
6850 push (@used, '$(' . $one_name . ')');
6851 }
6853 # Is this to be installed?
6854 my $install_p = $nodir_name ne 'noinst' && $nodir_name ne 'check';
6856 # If so, with install-exec? (or install-data?).
6857 my $exec_p = ($nodir_name =~ /$EXEC_DIR_PATTERN/o);
6859 my $check_options_p = $install_p && !! option 'std-options';
6861 # Use the location of the currently processed variable as context.
6862 $where->push_context ("while processing `$one_name'");
6864 # The variable containing all file to distribute.
6865 my $distvar = "\$($one_name)";
6866 $distvar = shadow_unconditionally ($one_name, $where)
6867 if ($dist_p && $one_var->has_conditional_contents);
6869 # Singular form of $PRIMARY.
6870 (my $one_primary = $primary) =~ s/S$//;
6871 $output_rules .= &file_contents ($file, $where,
6872 PRIMARY => $primary,
6873 ONE_PRIMARY => $one_primary,
6874 DIR => $X,
6875 NDIR => $nodir_name,
6876 BASE => $strip_subdir,
6878 EXEC => $exec_p,
6879 INSTALL => $install_p,
6880 DIST => $dist_p,
6881 DISTVAR => $distvar,
6882 'CK-OPTS' => $check_options_p);
6883 }
6885 # The JAVA variable is used as the name of the Java interpreter.
6886 # The PYTHON variable is used as the name of the Python interpreter.
6887 if (@used && $primary ne 'JAVA' && $primary ne 'PYTHON')
6888 {
6889 # Define it.
6890 define_pretty_variable ($primary, TRUE, INTERNAL, @used);
6891 $output_vars .= "\n";
6892 }
6894 err_var ($require_extra,
6895 "`$require_extra' contains configure substitution,\n"
6896 . "but `EXTRA_$primary' not defined")
6897 if ($require_extra && ! var ('EXTRA_' . $primary));
6899 # Push here because PRIMARY might be configure time determined.
6900 push (@all, '$(' . $primary . ')')
6901 if @used && $primary ne 'JAVA' && $primary ne 'PYTHON';
6903 # Make the result unique. This lets the user use conditionals in
6904 # a natural way, but still lets us program lazily -- we don't have
6905 # to worry about handling a particular object more than once.
6906 # We will keep only one location per object.
6907 my %result = ();
6908 for my $pair (@result)
6909 {
6910 my ($loc, $val) = @$pair;
6911 $result{$val} = $loc;
6912 }
6913 my @l = sort keys %result;
6914 return map { [$result{$_}->clone, $_] } @l;
6915 }
6918 ################################################################
6920 # Each key in this hash is the name of a directory holding a
6921 # Makefile.in. These variables are local to `is_make_dir'.
6922 my %make_dirs = ();
6923 my $make_dirs_set = 0;
6925 sub is_make_dir
6926 {
6927 my ($dir) = @_;
6928 if (! $make_dirs_set)
6929 {
6930 foreach my $iter (@configure_input_files)
6931 {
6932 $make_dirs{dirname ($iter)} = 1;
6933 }
6934 # We also want to notice Makefile.in's.
6935 foreach my $iter (@other_input_files)
6936 {
6937 if ($iter =~ /Makefile\.in$/)
6938 {
6939 $make_dirs{dirname ($iter)} = 1;
6940 }
6941 }
6942 $make_dirs_set = 1;
6943 }
6944 return defined $make_dirs{$dir};
6945 }
6947 ################################################################
6949 # Find the aux dir. This should match the algorithm used by
6950 # ./configure. (See the Autoconf documentation for for
6951 # AC_CONFIG_AUX_DIR.)
6952 sub locate_aux_dir ()
6953 {
6954 if (! $config_aux_dir_set_in_configure_ac)
6955 {
6956 # The default auxiliary directory is the first
6957 # of ., .., or ../.. that contains install-sh.
6958 # Assume . if install-sh doesn't exist yet.
6959 for my $dir (qw (. .. ../..))
6960 {
6961 if (-f "$dir/install-sh")
6962 {
6963 $config_aux_dir = $dir;
6964 last;
6965 }
6966 }
6967 $config_aux_dir = '.' unless $config_aux_dir;
6968 }
6969 # Avoid unsightly '/.'s.
6970 $am_config_aux_dir =
6971 '$(top_srcdir)' . ($config_aux_dir eq '.' ? "" : "/$config_aux_dir");
6972 $am_config_aux_dir =~ s,/*$,,;
6973 }
6976 # &maybe_push_required_file ($DIR, $FILE, $FULLFILE)
6977 # --------------------------------------------------
6978 # See if we want to push this file onto dist_common. This function
6979 # encodes the rules for deciding when to do so.
6980 sub maybe_push_required_file
6981 {
6982 my ($dir, $file, $fullfile) = @_;
6984 if ($dir eq $relative_dir)
6985 {
6986 push_dist_common ($file);
6987 return 1;
6988 }
6989 elsif ($relative_dir eq '.' && ! &is_make_dir ($dir))
6990 {
6991 # If we are doing the topmost directory, and the file is in a
6992 # subdir which does not have a Makefile, then we distribute it
6993 # here.
6995 # If a required file is above the source tree, it is important
6996 # to prefix it with `$(srcdir)' so that no VPATH search is
6997 # performed. Otherwise problems occur with Make implementations
6998 # that rewrite and simplify rules whose dependencies are found in a
6999 # VPATH location. Here is an example with OSF1/Tru64 Make.
7000 #
7001 # % cat Makefile
7002 # VPATH = sub
7003 # distdir: ../a
7004 # echo ../a
7005 # % ls
7006 # Makefile a
7007 # % make
7008 # echo a
7009 # a
7010 #
7011 # Dependency `../a' was found in `sub/../a', but this make
7012 # implementation simplified it as `a'. (Note that the sub/
7013 # directory does not even exist.)
7014 #
7015 # This kind of VPATH rewriting seems hard to cancel. The
7016 # distdir.am hack against VPATH rewriting works only when no
7017 # simplification is done, i.e., for dependencies which are in
7018 # subdirectories, not in enclosing directories. Hence, in
7019 # the latter case we use a full path to make sure no VPATH
7020 # search occurs.
7021 $fullfile = '$(srcdir)/' . $fullfile
7022 if $dir =~ m,^\.\.(?:$|/),;
7024 push_dist_common ($fullfile);
7025 return 1;
7026 }
7027 return 0;
7028 }
7031 # If a file name appears as a key in this hash, then it has already
7032 # been checked for. This allows us not to report the same error more
7033 # than once.
7034 my %required_file_not_found = ();
7036 # &require_file_internal ($WHERE, $MYSTRICT, $DIRECTORY, @FILES)
7037 # --------------------------------------------------------------
7038 # Verify that the file must exist in $DIRECTORY, or install it.
7039 # $MYSTRICT is the strictness level at which this file becomes required.
7040 sub require_file_internal ($$$@)
7041 {
7042 my ($where, $mystrict, $dir, @files) = @_;
7044 foreach my $file (@files)
7045 {
7046 my $fullfile = "$dir/$file";
7047 my $found_it = 0;
7048 my $dangling_sym = 0;
7050 if (-l $fullfile && ! -f $fullfile)
7051 {
7052 $dangling_sym = 1;
7053 }
7054 elsif (dir_has_case_matching_file ($dir, $file))
7055 {
7056 $found_it = 1;
7057 maybe_push_required_file ($dir, $file, $fullfile);
7058 }
7060 # `--force-missing' only has an effect if `--add-missing' is
7061 # specified.
7062 if ($found_it && (! $add_missing || ! $force_missing))
7063 {
7064 next;
7065 }
7066 else
7067 {
7068 # If we've already looked for it, we're done. You might
7069 # wonder why we don't do this before searching for the
7070 # file. If we do that, then something like
7071 # AC_OUTPUT(subdir/foo foo) will fail to put foo.in into
7072 # DIST_COMMON.
7073 if (! $found_it)
7074 {
7075 next if defined $required_file_not_found{$fullfile};
7076 $required_file_not_found{$fullfile} = 1;
7077 }
7079 if ($strictness >= $mystrict)
7080 {
7081 if ($dangling_sym && $add_missing)
7082 {
7083 unlink ($fullfile);
7084 }
7086 my $trailer = '';
7087 my $suppress = 0;
7089 # Only install missing files according to our desired
7090 # strictness level.
7091 my $message = "required file `$fullfile' not found";
7092 if ($add_missing)
7093 {
7094 if (-f ("$libdir/$file"))
7095 {
7096 $suppress = 1;
7098 # Install the missing file. Symlink if we
7099 # can, copy if we must. Note: delete the file
7100 # first, in case it is a dangling symlink.
7101 $message = "installing `$fullfile'";
7102 # Windows Perl will hang if we try to delete a
7103 # file that doesn't exist.
7104 unlink ($fullfile) if -f $fullfile;
7105 if ($symlink_exists && ! $copy_missing)
7106 {
7107 if (! symlink ("$libdir/$file", $fullfile))
7108 {
7109 $suppress = 0;
7110 $trailer = "; error while making link: $!";
7111 }
7112 }
7113 elsif (system ('cp', "$libdir/$file", $fullfile))
7114 {
7115 $suppress = 0;
7116 $trailer = "\n error while copying";
7117 }
7118 reset_dir_cache ($dir);
7119 }
7121 if (! maybe_push_required_file (dirname ($fullfile),
7122 $file, $fullfile))
7123 {
7124 if (! $found_it && ! $automake_will_process_aux_dir)
7125 {
7126 # We have added the file but could not push it
7127 # into DIST_COMMON, probably because this is
7128 # an auxiliary file and we are not processing
7129 # the top level Makefile. Furthermore Automake
7130 # hasn't been asked to create the Makefile.in
7131 # that distribute the aux dir files.
7132 error ($where, 'Please make a full run of automake'
7133 . " so $fullfile gets distributed.");
7134 }
7135 }
7136 }
7138 # If --force-missing was specified, and we have
7139 # actually found the file, then do nothing.
7140 next
7141 if $found_it && $force_missing;
7143 # If we couldn' install the file, but it is a target in
7144 # the Makefile, don't print anything. This allows files
7145 # like README, AUTHORS, or THANKS to be generated.
7146 next
7147 if !$suppress && rule $file;
7149 msg ($suppress ? 'note' : 'error', $where, "$message$trailer");
7150 }
7151 }
7152 }
7153 }
7155 # &require_file ($WHERE, $MYSTRICT, @FILES)
7156 # -----------------------------------------
7157 sub require_file ($$@)
7158 {
7159 my ($where, $mystrict, @files) = @_;
7160 require_file_internal ($where, $mystrict, $relative_dir, @files);
7161 }
7163 # &require_file_with_macro ($COND, $MACRO, $MYSTRICT, @FILES)
7164 # -----------------------------------------------------------
7165 sub require_file_with_macro ($$$@)
7166 {
7167 my ($cond, $macro, $mystrict, @files) = @_;
7168 $macro = rvar ($macro) unless ref $macro;
7169 require_file ($macro->rdef ($cond)->location, $mystrict, @files);
7170 }
7173 # &require_conf_file ($WHERE, $MYSTRICT, @FILES)
7174 # ----------------------------------------------
7175 # Looks in configuration path, as specified by AC_CONFIG_AUX_DIR.
7176 sub require_conf_file ($$@)
7177 {
7178 my ($where, $mystrict, @files) = @_;
7179 require_file_internal ($where, $mystrict, $config_aux_dir, @files);
7180 }
7183 # &require_conf_file_with_macro ($COND, $MACRO, $MYSTRICT, @FILES)
7184 # ----------------------------------------------------------------
7185 sub require_conf_file_with_macro ($$$@)
7186 {
7187 my ($cond, $macro, $mystrict, @files) = @_;
7188 require_conf_file (rvar ($macro)->rdef ($cond)->location,
7189 $mystrict, @files);
7190 }
7192 ################################################################
7194 # &require_build_directory ($DIRECTORY)
7195 # ------------------------------------
7196 # Emit rules to create $DIRECTORY if needed, and return
7197 # the file that any target requiring this directory should be made
7198 # dependent upon.
7199 sub require_build_directory ($)
7200 {
7201 my $directory = shift;
7202 my $dirstamp = "$directory/\$(am__dirstamp)";
7204 # Don't emit the rule twice.
7205 if (! defined $directory_map{$directory})
7206 {
7207 $directory_map{$directory} = 1;
7209 # Set a variable for the dirstamp basename.
7210 define_pretty_variable ('am__dirstamp', TRUE, INTERNAL,
7211 '$(am__leading_dot)dirstamp');
7213 # Directory must be removed by `make distclean'.
7214 $clean_files{$dirstamp} = DIST_CLEAN;
7216 $output_rules .= ("$dirstamp:\n"
7217 . "\t\@\$(mkdir_p) $directory\n"
7218 . "\t\@: > $dirstamp\n");
7219 }
7221 return $dirstamp;
7222 }
7224 # &require_build_directory_maybe ($FILE)
7225 # --------------------------------------
7226 # If $FILE lies in a subdirectory, emit a rule to create this
7227 # directory and return the file that $FILE should be made
7228 # dependent upon. Otherwise, just return the empty string.
7229 sub require_build_directory_maybe ($)
7230 {
7231 my $file = shift;
7232 my $directory = dirname ($file);
7234 if ($directory ne '.')
7235 {
7236 return require_build_directory ($directory);
7237 }
7238 else
7239 {
7240 return '';
7241 }
7242 }
7244 ################################################################
7246 # Push a list of files onto dist_common.
7247 sub push_dist_common
7248 {
7249 prog_error "push_dist_common run after handle_dist"
7250 if $handle_dist_run;
7251 Automake::Variable::define ('DIST_COMMON', VAR_AUTOMAKE, '+', TRUE, "@_",
7252 '', INTERNAL, VAR_PRETTY);
7253 }
7256 ################################################################
7258 # generate_makefile ($MAKEFILE_AM, $MAKEFILE_IN)
7259 # ----------------------------------------------
7260 # Generate a Makefile.in given the name of the corresponding Makefile and
7261 # the name of the file output by config.status.
7262 sub generate_makefile ($$)
7263 {
7264 my ($makefile_am, $makefile_in) = @_;
7266 # Reset all the Makefile.am related variables.
7267 initialize_per_input;
7269 # AUTOMAKE_OPTIONS can contains -W flags to disable or enable
7270 # warnings for this file. So hold any warning issued before
7271 # we have processed AUTOMAKE_OPTIONS.
7272 buffer_messages ('warning');
7274 # Name of input file ("Makefile.am") and output file
7275 # ("Makefile.in"). These have no directory components.
7276 $am_file_name = basename ($makefile_am);
7277 $in_file_name = basename ($makefile_in);
7279 # $OUTPUT is encoded. If it contains a ":" then the first element
7280 # is the real output file, and all remaining elements are input
7281 # files. We don't scan or otherwise deal with these input files,
7282 # other than to mark them as dependencies. See
7283 # &scan_autoconf_files for details.
7284 my ($makefile, @inputs) = split (/:/, $output_files{$makefile_in});
7286 $relative_dir = dirname ($makefile);
7287 $am_relative_dir = dirname ($makefile_am);
7289 read_main_am_file ($makefile_am);
7290 if (handle_options)
7291 {
7292 # Process buffered warnings.
7293 flush_messages;
7294 # Fatal error. Just return, so we can continue with next file.
7295 return;
7296 }
7297 # Process buffered warnings.
7298 flush_messages;
7300 # There are a few install-related variables that you should not define.
7301 foreach my $var ('PRE_INSTALL', 'POST_INSTALL', 'NORMAL_INSTALL')
7302 {
7303 my $v = var $var;
7304 if ($v)
7305 {
7306 my $def = $v->def (TRUE);
7307 prog_error "$var not defined in condition TRUE"
7308 unless $def;
7309 reject_var $var, "`$var' should not be defined"
7310 if $def->owner != VAR_AUTOMAKE;
7311 }
7312 }
7314 # Catch some obsolete variables.
7315 msg_var ('obsolete', 'INCLUDES',
7316 "`INCLUDES' is the old name for `AM_CPPFLAGS' (or `*_CPPFLAGS')")
7317 if var ('INCLUDES');
7319 # Must do this after reading .am file.
7320 define_variable ('subdir', $relative_dir, INTERNAL);
7322 # If DIST_SUBDIRS is defined, make sure SUBDIRS is, so that
7323 # recursive rules are enabled.
7324 define_pretty_variable ('SUBDIRS', TRUE, INTERNAL, '')
7325 if var 'DIST_SUBDIRS' && ! var 'SUBDIRS';
7327 # Check first, because we might modify some state.
7328 check_cygnus;
7329 check_gnu_standards;
7330 check_gnits_standards;
7332 handle_configure ($makefile_am, $makefile_in, $makefile, @inputs);
7333 handle_gettext;
7334 handle_libraries;
7335 handle_ltlibraries;
7336 handle_programs;
7337 handle_scripts;
7339 # These must be run after all the sources are scanned. They
7340 # use variables defined by &handle_libraries, &handle_ltlibraries,
7341 # or &handle_programs.
7342 handle_compile;
7343 handle_languages;
7344 handle_libtool;
7346 # Variables used by distdir.am and tags.am.
7347 define_pretty_variable ('SOURCES', TRUE, INTERNAL, @sources);
7348 if (! option 'no-dist')
7349 {
7350 define_pretty_variable ('DIST_SOURCES', TRUE, INTERNAL, @dist_sources);
7351 }
7353 handle_multilib;
7354 handle_texinfo;
7355 handle_emacs_lisp;
7356 handle_python;
7357 handle_java;
7358 handle_man_pages;
7359 handle_data;
7360 handle_headers;
7361 handle_subdirs;
7362 handle_tags;
7363 handle_minor_options;
7364 handle_tests;
7366 # This must come after most other rules.
7367 handle_dist;
7369 handle_footer;
7370 do_check_merge_target;
7371 handle_all ($makefile);
7373 # FIXME: Gross!
7374 if (var ('lib_LTLIBRARIES') && var ('bin_PROGRAMS'))
7375 {
7376 $output_rules .= "install-binPROGRAMS: install-libLTLIBRARIES\n\n";
7377 }
7379 handle_install;
7380 handle_clean ($makefile);
7381 handle_factored_dependencies;
7383 # Comes last, because all the above procedures may have
7384 # defined or overridden variables.
7385 $output_vars .= output_variables;
7387 check_typos;
7389 my ($out_file) = $output_directory . '/' . $makefile_in;
7391 if ($exit_code != 0)
7392 {
7393 verb "not writing $out_file because of earlier errors";
7394 return;
7395 }
7397 if (! -d ($output_directory . '/' . $am_relative_dir))
7398 {
7399 mkdir ($output_directory . '/' . $am_relative_dir, 0755);
7400 }
7402 # We make sure that `all:' is the first target.
7403 my $output =
7404 "$output_vars$output_all$output_header$output_rules$output_trailer";
7406 # Decide whether we must update the output file or not.
7407 # We have to update in the following situations.
7408 # * $force_generation is set.
7409 # * any of the output dependencies is younger than the output
7410 # * the contents of the output is different (this can happen
7411 # if the project has been populated with a file listed in
7412 # @common_files since the last run).
7413 # Output's dependencies are split in two sets:
7414 # * dependencies which are also configure dependencies
7415 # These do not change between each Makefile.am
7416 # * other dependencies, specific to the Makefile.am being processed
7417 # (such as the Makefile.am itself, or any Makefile fragment
7418 # it includes).
7419 my $timestamp = mtime $out_file;
7420 if (! $force_generation
7421 && $configure_deps_greatest_timestamp < $timestamp
7422 && $output_deps_greatest_timestamp < $timestamp
7423 && $output eq contents ($out_file))
7424 {
7425 verb "$out_file unchanged";
7426 # No need to update.
7427 return;
7428 }
7430 if (-e $out_file)
7431 {
7432 unlink ($out_file)
7433 or fatal "cannot remove $out_file: $!\n";
7434 }
7436 my $gm_file = new Automake::XFile "> $out_file";
7437 verb "creating $out_file";
7438 print $gm_file $output;
7439 }
7441 ################################################################
7446 ################################################################
7448 # Print usage information.
7449 sub usage ()
7450 {
7451 print "Usage: $0 [OPTION] ... [Makefile]...
7453 Generate Makefile.in for configure from Makefile.am.
7455 Operation modes:
7456 --help print this help, then exit
7457 --version print version number, then exit
7458 -v, --verbose verbosely list files processed
7459 --no-force only update Makefile.in's that are out of date
7460 -W, --warnings=CATEGORY report the warnings falling in CATEGORY
7462 Dependency tracking:
7463 -i, --ignore-deps disable dependency tracking code
7464 --include-deps enable dependency tracking code
7466 Flavors:
7467 --cygnus assume program is part of Cygnus-style tree
7468 --foreign set strictness to foreign
7469 --gnits set strictness to gnits
7470 --gnu set strictness to gnu
7472 Library files:
7473 -a, --add-missing add missing standard files to package
7474 --libdir=DIR directory storing library files
7475 -c, --copy with -a, copy missing files (default is symlink)
7476 -f, --force-missing force update of standard files
7478 ";
7479 Automake::ChannelDefs::usage;
7481 my ($last, @lcomm);
7482 $last = '';
7483 foreach my $iter (sort ((@common_files, @common_sometimes)))
7484 {
7485 push (@lcomm, $iter) unless $iter eq $last;
7486 $last = $iter;
7487 }
7489 my @four;
7490 print "\nFiles which are automatically distributed, if found:\n";
7491 format USAGE_FORMAT =
7492 @<<<<<<<<<<<<<<<< @<<<<<<<<<<<<<<<< @<<<<<<<<<<<<<<<< @<<<<<<<<<<<<<<<<
7493 $four[0], $four[1], $four[2], $four[3]
7494 .
7495 $~ = "USAGE_FORMAT";
7497 my $cols = 4;
7498 my $rows = int(@lcomm / $cols);
7499 my $rest = @lcomm % $cols;
7501 if ($rest)
7502 {
7503 $rows++;
7504 }
7505 else
7506 {
7507 $rest = $cols;
7508 }
7510 for (my $y = 0; $y < $rows; $y++)
7511 {
7512 @four = ("", "", "", "");
7513 for (my $x = 0; $x < $cols; $x++)
7514 {
7515 last if $y + 1 == $rows && $x == $rest;
7517 my $idx = (($x > $rest)
7518 ? ($rows * $rest + ($rows - 1) * ($x - $rest))
7519 : ($rows * $x));
7521 $idx += $y;
7522 $four[$x] = $lcomm[$idx];
7523 }
7524 write;
7525 }
7527 print "\nReport bugs to <bug-automake\@gnu.org>.\n";
7529 # --help always returns 0 per GNU standards.
7530 exit 0;
7531 }
7534 # &version ()
7535 # -----------
7536 # Print version information
7537 sub version ()
7538 {
7539 print <<EOF;
7540 automake (GNU $PACKAGE) $VERSION
7541 Written by Tom Tromey <tromey\@redhat.com>
7542 and Alexandre Duret-Lutz <adl\@gnu.org>.
7544 Copyright 2005 Free Software Foundation, Inc.
7545 This is free software; see the source for copying conditions. There is NO
7546 warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
7547 EOF
7548 # --version always returns 0 per GNU standards.
7549 exit 0;
7550 }
7552 ################################################################
7554 # Parse command line.
7555 sub parse_arguments ()
7556 {
7557 # Start off as gnu.
7558 set_strictness ('gnu');
7560 my $cli_where = new Automake::Location;
7561 my %cli_options =
7562 (
7563 'libdir=s' => \$libdir,
7564 'gnu' => sub { set_strictness ('gnu'); },
7565 'gnits' => sub { set_strictness ('gnits'); },
7566 'cygnus' => sub { set_global_option ('cygnus', $cli_where); },
7567 'foreign' => sub { set_strictness ('foreign'); },
7568 'include-deps' => sub { unset_global_option ('no-dependencies'); },
7569 'i|ignore-deps' => sub { set_global_option ('no-dependencies',
7570 $cli_where); },
7571 'no-force' => sub { $force_generation = 0; },
7572 'f|force-missing' => \$force_missing,
7573 'o|output-dir=s' => \$output_directory,
7574 'a|add-missing' => \$add_missing,
7575 'c|copy' => \$copy_missing,
7576 'v|verbose' => sub { setup_channel 'verb', silent => 0; },
7577 'W|warnings=s' => \&parse_warnings,
7578 # These long options (--Werror and --Wno-error) for backward
7579 # compatibility. Use -Werror and -Wno-error today.
7580 'Werror' => sub { parse_warnings 'W', 'error'; },
7581 'Wno-error' => sub { parse_warnings 'W', 'no-error'; },
7582 );
7583 use Getopt::Long;
7584 Getopt::Long::config ("bundling", "pass_through");
7586 # See if --version or --help is used. We want to process these before
7587 # anything else because the GNU Coding Standards require us to
7588 # `exit 0' after processing these options, and we can't guarantee this
7589 # if we treat other options first. (Handling other options first
7590 # could produce error diagnostics, and in this condition it is
7591 # confusing if Automake does `exit 0'.)
7592 my %cli_options_1st_pass =
7593 (
7594 'version' => \&version,
7595 'help' => \&usage,
7596 # Recognize all other options (and their arguments) but do nothing.
7597 map { $_ => sub {} } (keys %cli_options)
7598 );
7599 my @ARGV_backup = @ARGV;
7600 Getopt::Long::GetOptions %cli_options_1st_pass
7601 or exit 1;
7602 @ARGV = @ARGV_backup;
7604 # Now *really* process the options. This time we know that --help
7605 # and --version are not present, but we specify them nonetheless so
7606 # that ambiguous abbreviation are diagnosed.
7607 Getopt::Long::GetOptions %cli_options, 'version' => sub {}, 'help' => sub {}
7608 or exit 1;
7610 if (defined $output_directory)
7611 {
7612 msg 'obsolete', "`--output-dir' is deprecated\n";
7613 }
7614 else
7615 {
7616 # In the next release we'll remove this entirely.
7617 $output_directory = '.';
7618 }
7620 return unless @ARGV;
7622 if ($ARGV[0] =~ /^-./)
7623 {
7624 my %argopts;
7625 for my $k (keys %cli_options)
7626 {
7627 if ($k =~ /(.*)=s$/)
7628 {
7629 map { $argopts{(length ($_) == 1)
7630 ? "-$_" : "--$_" } = 1; } (split (/\|/, $1));
7631 }
7632 }
7633 if ($ARGV[0] eq '--')
7634 {
7635 shift @ARGV;
7636 }
7637 elsif (exists $argopts{$ARGV[0]})
7638 {
7639 fatal ("option `$ARGV[0]' requires an argument\n"
7640 . "Try `$0 --help' for more information.");
7641 }
7642 else
7643 {
7644 fatal ("unrecognized option `$ARGV[0]'.\n"
7645 . "Try `$0 --help' for more information.");
7646 }
7647 }
7649 my $errspec = 0;
7650 foreach my $arg (@ARGV)
7651 {
7652 fatal ("empty argument\nTry `$0 --help' for more information.")
7653 if ($arg eq '');
7655 # Handle $local:$input syntax.
7656 my ($local, @rest) = split (/:/, $arg);
7657 @rest = ("$local.in",) unless @rest;
7658 my $input = locate_am @rest;
7659 if ($input)
7660 {
7661 push @input_files, $input;
7662 $output_files{$input} = join (':', ($local, @rest));
7663 }
7664 else
7665 {
7666 error "no Automake input file found for `$arg'";
7667 $errspec = 1;
7668 }
7669 }
7670 fatal "no input file found among supplied arguments"
7671 if $errspec && ! @input_files;
7672 }
7674 ################################################################
7676 # Parse the WARNINGS environment variable.
7677 parse_WARNINGS;
7679 # Parse command line.
7680 parse_arguments;
7682 $configure_ac = require_configure_ac;
7684 # Do configure.ac scan only once.
7685 scan_autoconf_files;
7687 if (! @input_files)
7688 {
7689 my $msg = '';
7690 $msg = "\nDid you forget AC_CONFIG_FILES([Makefile]) in $configure_ac?"
7691 if -f 'Makefile.am';
7692 fatal ("no `Makefile.am' found for any configure output$msg");
7693 }
7695 # Now do all the work on each file.
7696 foreach my $file (@input_files)
7697 {
7698 ($am_file = $file) =~ s/\.in$//;
7699 if (! -f ($am_file . '.am'))
7700 {
7701 error "`$am_file.am' does not exist";
7702 }
7703 else
7704 {
7705 # Any warning setting now local to this Makefile.am.
7706 dup_channel_setup;
7708 generate_makefile ($am_file . '.am', $file);
7710 # Back out any warning setting.
7711 drop_channel_setup;
7712 }
7713 }
7715 exit $exit_code;
7718 ### Setup "GNU" style for perl-mode and cperl-mode.
7719 ## Local Variables:
7720 ## perl-indent-level: 2
7721 ## perl-continued-statement-offset: 2
7722 ## perl-continued-brace-offset: 0
7723 ## perl-brace-offset: 0
7724 ## perl-brace-imaginary-offset: 0
7725 ## perl-label-offset: -2
7726 ## cperl-indent-level: 2
7727 ## cperl-brace-offset: 0
7728 ## cperl-continued-brace-offset: 0
7729 ## cperl-label-offset: -2
7730 ## cperl-extra-newline-before-brace: t
7731 ## cperl-merge-trailing-else: nil
7732 ## cperl-continued-statement-offset: 2
7733 ## End: