| blob | f5ab51e4f917c58eabbc25b0c7d5b7eb1997fd7e |
1 #!@PERL@ -w
2 # -*- perl -*-
3 # @configure_input@
5 eval 'case $# in 0) exec @PERL@ -S "$0";; *) exec @PERL@ -S "$0" "$@";; esac'
6 if 0;
8 # automake - create Makefile.in from Makefile.am
9 # Copyright (C) 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002,
10 # 2003, 2004 Free Software Foundation, Inc.
12 # This program is free software; you can redistribute it and/or modify
13 # it under the terms of the GNU General Public License as published by
14 # the Free Software Foundation; either version 2, or (at your option)
15 # any later version.
17 # This program is distributed in the hope that it will be useful,
18 # but WITHOUT ANY WARRANTY; without even the implied warranty of
19 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
20 # GNU General Public License for more details.
22 # You should have received a copy of the GNU General Public License
23 # along with this program; if not, write to the Free Software
24 # Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
25 # 02111-1307, USA.
27 # Originally written by David Mackenzie <djm@gnu.ai.mit.edu>.
28 # Perl reimplementation by Tom Tromey <tromey@redhat.com>.
30 package Language;
32 BEGIN
33 {
34 my $perllibdir = $ENV{'perllibdir'} || '@datadir@/@PACKAGE@-@APIVERSION@';
35 unshift @INC, (split ':', $perllibdir);
37 # Override SHELL. This is required on DJGPP so that system() uses
38 # bash, not COMMAND.COM which doesn't quote arguments properly.
39 # Other systems aren't expected to use $SHELL when Automake
40 # runs, but it should be safe to drop the `if DJGPP' guard if
41 # it turns up other systems need the same thing. After all,
42 # if SHELL is used, ./configure's SHELL is always better than
43 # the user's SHELL (which may be something like tcsh).
44 $ENV{'SHELL'} = '@SHELL@' if exists $ENV{'DJGPP'};
45 }
47 use Automake::Struct;
48 struct (# Short name of the language (c, f77...).
49 'name' => "\$",
50 # Nice name of the language (C, Fortran 77...).
51 'Name' => "\$",
53 # List of configure variables which must be defined.
54 'config_vars' => '@',
56 'ansi' => "\$",
57 # `pure' is `1' or `'. A `pure' language is one where, if
58 # all the files in a directory are of that language, then we
59 # do not require the C compiler or any code to call it.
60 'pure' => "\$",
62 'autodep' => "\$",
64 # Name of the compiling variable (COMPILE).
65 'compiler' => "\$",
66 # Content of the compiling variable.
67 'compile' => "\$",
68 # Flag to require compilation without linking (-c).
69 'compile_flag' => "\$",
70 'extensions' => '@',
71 # A subroutine to compute a list of possible extensions of
72 # the product given the input extensions.
73 # (defaults to a subroutine which returns ('.$(OBJEXT)', '.lo'))
74 'output_extensions' => "\$",
75 # A list of flag variables used in 'compile'.
76 # (defaults to [])
77 'flags' => "@",
79 # The file to use when generating rules for this language.
80 # The default is 'depend2'.
81 'rule_file' => "\$",
83 # Name of the linking variable (LINK).
84 'linker' => "\$",
85 # Content of the linking variable.
86 'link' => "\$",
88 # Name of the linker variable (LD).
89 'lder' => "\$",
90 # Content of the linker variable ($(CC)).
91 'ld' => "\$",
93 # Flag to specify the output file (-o).
94 'output_flag' => "\$",
95 '_finish' => "\$",
97 # This is a subroutine which is called whenever we finally
98 # determine the context in which a source file will be
99 # compiled.
100 '_target_hook' => "\$");
103 sub finish ($)
104 {
105 my ($self) = @_;
106 if (defined $self->_finish)
107 {
108 &{$self->_finish} ();
109 }
110 }
112 sub target_hook ($$$$)
113 {
114 my ($self) = @_;
115 if (defined $self->_target_hook)
116 {
117 &{$self->_target_hook} (@_);
118 }
119 }
121 package Automake;
123 use strict;
124 use Automake::Config;
125 use Automake::General;
126 use Automake::XFile;
127 use Automake::Channels;
128 use Automake::ChannelDefs;
129 use Automake::Configure_ac;
130 use Automake::FileUtils;
131 use Automake::Location;
132 use Automake::Condition qw/TRUE FALSE/;
133 use Automake::DisjConditions;
134 use Automake::Options;
135 use Automake::Version;
136 use Automake::Variable;
137 use Automake::VarDef;
138 use Automake::Rule;
139 use Automake::RuleDef;
140 use Automake::Wrap 'makefile_wrap';
141 use File::Basename;
142 use Carp;
144 ## ----------- ##
145 ## Constants. ##
146 ## ----------- ##
148 # Some regular expressions. One reason to put them here is that it
149 # makes indentation work better in Emacs.
151 # Writing singled-quoted-$-terminated regexes is a pain because
152 # perl-mode thinks of $' as the ${'} variable (instead of a $ followed
153 # by a closing quote. Letting perl-mode think the quote is not closed
154 # leads to all sort of misindentations. On the other hand, defining
155 # regexes as double-quoted strings is far less readable. So usually
156 # we will write:
157 #
158 # $REGEX = '^regex_value' . "\$";
160 my $IGNORE_PATTERN = '^\s*##([^#\n].*)?\n';
161 my $WHITE_PATTERN = '^\s*' . "\$";
162 my $COMMENT_PATTERN = '^#';
163 my $TARGET_PATTERN='[$a-zA-Z_.@%][-.a-zA-Z0-9_(){}/$+@%]*';
164 # A rule has three parts: a list of targets, a list of dependencies,
165 # and optionally actions.
166 my $RULE_PATTERN =
167 "^($TARGET_PATTERN(?:(?:\\\\\n|\\s)+$TARGET_PATTERN)*) *:([^=].*|)\$";
169 # Only recognize leading spaces, not leading tabs. If we recognize
170 # leading tabs here then we need to make the reader smarter, because
171 # otherwise it will think rules like `foo=bar; \' are errors.
172 my $ASSIGNMENT_PATTERN = '^ *([^ \t=:+]*)\s*([:+]?)=\s*(.*)' . "\$";
173 # This pattern recognizes a Gnits version id and sets $1 if the
174 # release is an alpha release. We also allow a suffix which can be
175 # used to extend the version number with a "fork" identifier.
176 my $GNITS_VERSION_PATTERN = '\d+\.\d+([a-z]|\.\d+)?(-[A-Za-z0-9]+)?';
178 my $IF_PATTERN = '^if\s+(!?)\s*([A-Za-z][A-Za-z0-9_]*)\s*(?:#.*)?' . "\$";
179 my $ELSE_PATTERN =
180 '^else(?:\s+(!?)\s*([A-Za-z][A-Za-z0-9_]*))?\s*(?:#.*)?' . "\$";
181 my $ENDIF_PATTERN =
182 '^endif(?:\s+(!?)\s*([A-Za-z][A-Za-z0-9_]*))?\s*(?:#.*)?' . "\$";
183 my $PATH_PATTERN = '(\w|[/.-])+';
184 # This will pass through anything not of the prescribed form.
185 my $INCLUDE_PATTERN = ('^include\s+'
186 . '((\$\(top_srcdir\)/' . $PATH_PATTERN . ')'
187 . '|(\$\(srcdir\)/' . $PATH_PATTERN . ')'
188 . '|([^/\$]' . $PATH_PATTERN . '))\s*(#.*)?' . "\$");
190 # Match `-d' as a command-line argument in a string.
191 my $DASH_D_PATTERN = "(^|\\s)-d(\\s|\$)";
192 # Directories installed during 'install-exec' phase.
193 my $EXEC_DIR_PATTERN =
194 '^(?:bin|sbin|libexec|sysconf|localstate|lib|pkglib|.*exec.*)' . "\$";
196 # Values for AC_CANONICAL_*
197 use constant AC_CANONICAL_HOST => 1;
198 use constant AC_CANONICAL_SYSTEM => 2;
200 # Values indicating when something should be cleaned.
201 use constant MOSTLY_CLEAN => 0;
202 use constant CLEAN => 1;
203 use constant DIST_CLEAN => 2;
204 use constant MAINTAINER_CLEAN => 3;
206 # Libtool files.
207 my @libtool_files = qw(ltmain.sh config.guess config.sub);
208 # ltconfig appears here for compatibility with old versions of libtool.
209 my @libtool_sometimes = qw(ltconfig ltcf-c.sh ltcf-cxx.sh ltcf-gcj.sh);
211 # Commonly found files we look for and automatically include in
212 # DISTFILES.
213 my @common_files =
214 (qw(ABOUT-GNU ABOUT-NLS AUTHORS BACKLOG COPYING COPYING.DOC COPYING.LIB
215 COPYING.LESSER ChangeLog INSTALL NEWS README THANKS TODO
216 ansi2knr.1 ansi2knr.c compile config.guess config.rpath config.sub
217 depcomp elisp-comp install-sh libversion.in mdate-sh missing
218 mkinstalldirs py-compile texinfo.tex ylwrap),
219 @libtool_files, @libtool_sometimes);
221 # Commonly used files we auto-include, but only sometimes. This list
222 # is used for the --help output only.
223 my @common_sometimes =
224 qw(aclocal.m4 acconfig.h config.h.top config.h.bot configure
225 configure.ac configure.in stamp-vti);
227 # Standard directories from the GNU Coding Standards, and additional
228 # pkg* directories from Automake. Stored in a hash for fast member check.
229 my %standard_prefix =
230 map { $_ => 1 } (qw(bin data exec include info lib libexec lisp
231 localstate man man1 man2 man3 man4 man5 man6
232 man7 man8 man9 oldinclude pkgdatadir
233 pkgincludedir pkglibdir sbin sharedstate
234 sysconf));
236 # Copyright on generated Makefile.ins.
237 my $gen_copyright = "\
238 # Copyright (C) 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002,
239 # 2003, 2004 Free Software Foundation, Inc.
240 # This Makefile.in is free software; the Free Software Foundation
241 # gives unlimited permission to copy and/or distribute it,
242 # with or without modifications, as long as this notice is preserved.
244 # This program is distributed in the hope that it will be useful,
245 # but WITHOUT ANY WARRANTY, to the extent permitted by law; without
246 # even the implied warranty of MERCHANTABILITY or FITNESS FOR A
247 # PARTICULAR PURPOSE.
248 ";
250 # These constants are returned by lang_*_rewrite functions.
251 # LANG_SUBDIR means that the resulting object file should be in a
252 # subdir if the source file is. In this case the file name cannot
253 # have `..' components.
254 use constant LANG_IGNORE => 0;
255 use constant LANG_PROCESS => 1;
256 use constant LANG_SUBDIR => 2;
258 # These are used when keeping track of whether an object can be built
259 # by two different paths.
260 use constant COMPILE_LIBTOOL => 1;
261 use constant COMPILE_ORDINARY => 2;
263 # We can't always associate a location to a variable or a rule,
264 # when its defined by Automake. We use INTERNAL in this case.
265 use constant INTERNAL => new Automake::Location;
266 \f
268 ## ---------------------------------- ##
269 ## Variables related to the options. ##
270 ## ---------------------------------- ##
272 # TRUE if we should always generate Makefile.in.
273 my $force_generation = 1;
275 # From the Perl manual.
276 my $symlink_exists = (eval 'symlink ("", "");', $@ eq '');
278 # TRUE if missing standard files should be installed.
279 my $add_missing = 0;
281 # TRUE if we should copy missing files; otherwise symlink if possible.
282 my $copy_missing = 0;
284 # TRUE if we should always update files that we know about.
285 my $force_missing = 0;
288 ## ---------------------------------------- ##
289 ## Variables filled during files scanning. ##
290 ## ---------------------------------------- ##
292 # Name of the configure.ac file.
293 my $configure_ac;
295 # Files found by scanning configure.ac for LIBOBJS.
296 my %libsources = ();
298 # Names used in AC_CONFIG_HEADER call.
299 my @config_headers = ();
301 # Names used in AC_CONFIG_LINKS call.
302 my @config_links = ();
304 # Directory where output files go. Actually, output files are
305 # relative to this directory.
306 my $output_directory;
308 # List of Makefile.am's to process, and their corresponding outputs.
309 my @input_files = ();
310 my %output_files = ();
312 # Complete list of Makefile.am's that exist.
313 my @configure_input_files = ();
315 # List of files in AC_CONFIG_FILES/AC_OUTPUT without Makefile.am's,
316 # and their outputs.
317 my @other_input_files = ();
318 # Where each AC_CONFIG_FILES/AC_OUTPUT/AC_CONFIG_LINK/AC_CONFIG_HEADER appears.
319 # The keys are the files created by these macros.
320 my %ac_config_files_location = ();
322 # List of directories to search for configure-required files. This
323 # can be set by AC_CONFIG_AUX_DIR.
324 my @config_aux_path = qw(. .. ../..);
325 my $config_aux_dir = '';
326 my $config_aux_dir_set_in_configure_in = 0;
328 # Whether AM_GNU_GETTEXT has been seen in configure.ac.
329 my $seen_gettext = 0;
330 # Whether AM_GNU_GETTEXT([external]) is used.
331 my $seen_gettext_external = 0;
332 # Where AM_GNU_GETTEXT appears.
333 my $ac_gettext_location;
335 # TRUE if we've seen AC_CANONICAL_(HOST|SYSTEM).
336 my $seen_canonical = 0;
337 my $canonical_location;
339 # Where AM_MAINTAINER_MODE appears.
340 my $seen_maint_mode;
342 # Actual version we've seen.
343 my $package_version = '';
345 # Where version is defined.
346 my $package_version_location;
348 # TRUE if we've seen AC_ENABLE_MULTILIB.
349 my $seen_multilib = 0;
351 # TRUE if we've seen AM_PROG_CC_C_O
352 my $seen_cc_c_o = 0;
354 # Where AM_INIT_AUTOMAKE is called;
355 my $seen_init_automake = 0;
357 # TRUE if we've seen AM_AUTOMAKE_VERSION.
358 my $seen_automake_version = 0;
360 # Hash table of discovered configure substitutions. Keys are names,
361 # values are `FILE:LINE' strings which are used by error message
362 # generation.
363 my %configure_vars = ();
365 # Files included by $configure_ac.
366 my @configure_deps = ();
368 # Greatest timestamp of configure's dependencies.
369 my $configure_deps_greatest_timestamp = 0;
371 # Hash table of AM_CONDITIONAL variables seen in configure.
372 my %configure_cond = ();
374 # This maps extensions onto language names.
375 my %extension_map = ();
377 # List of the DIST_COMMON files we discovered while reading
378 # configure.in
379 my $configure_dist_common = '';
381 # This maps languages names onto objects.
382 my %languages = ();
384 # List of targets we must always output.
385 # FIXME: Complete, and remove falsely required targets.
386 my %required_targets =
387 (
388 'all' => 1,
389 'dvi' => 1,
390 'pdf' => 1,
391 'ps' => 1,
392 'info' => 1,
393 'install-info' => 1,
394 'install' => 1,
395 'install-data' => 1,
396 'install-exec' => 1,
397 'uninstall' => 1,
399 # FIXME: Not required, temporary hacks.
400 # Well, actually they are sort of required: the -recursive
401 # targets will run them anyway...
402 'dvi-am' => 1,
403 'pdf-am' => 1,
404 'ps-am' => 1,
405 'info-am' => 1,
406 'install-data-am' => 1,
407 'install-exec-am' => 1,
408 'installcheck-am' => 1,
409 'uninstall-am' => 1,
411 'install-man' => 1,
412 );
414 # This is set to 1 when Automake needs to be run again.
415 # (For instance, this happens when an auxiliary file such as
416 # depcomp is added after the toplevel Makefile.in -- which
417 # should distribute depcomp -- has been generated.)
418 my $automake_needs_to_reprocess_all_files = 0;
420 # If a file name appears as a key in this hash, then it has already
421 # been checked for. This variable is local to the "require file"
422 # functions.
423 my %require_file_found = ();
425 # The name of the Makefile currently being processed.
426 my $am_file = 'BUG';
427 \f
429 ################################################################
431 ## ------------------------------------------ ##
432 ## Variables reset by &initialize_per_input. ##
433 ## ------------------------------------------ ##
435 # Basename and relative dir of the input file.
436 my $am_file_name;
437 my $am_relative_dir;
439 # Same but wrt Makefile.in.
440 my $in_file_name;
441 my $relative_dir;
443 # Greatest timestamp of the output's dependencies (excluding
444 # configure's dependencies).
445 my $output_deps_greatest_timestamp;
447 # These two variables are used when generating each Makefile.in.
448 # They hold the Makefile.in until it is ready to be printed.
449 my $output_rules;
450 my $output_vars;
451 my $output_trailer;
452 my $output_all;
453 my $output_header;
455 # This is the conditional stack, updated on if/else/endif, and
456 # used to build Condition objects.
457 my @cond_stack;
459 # This holds the set of included files.
460 my @include_stack;
462 # This holds a list of directories which we must create at `dist'
463 # time. This is used in some strange scenarios involving weird
464 # AC_OUTPUT commands.
465 my %dist_dirs;
467 # List of dependencies for the obvious targets.
468 my @all;
469 my @check;
470 my @check_tests;
472 # Keys in this hash table are files to delete. The associated
473 # value tells when this should happen (MOSTLY_CLEAN, DIST_CLEAN, etc.)
474 my %clean_files;
476 # Keys in this hash table are object files or other files in
477 # subdirectories which need to be removed. This only holds files
478 # which are created by compilations. The value in the hash indicates
479 # when the file should be removed.
480 my %compile_clean_files;
482 # Keys in this hash table are directories where we expect to build a
483 # libtool object. We use this information to decide what directories
484 # to delete.
485 my %libtool_clean_directories;
487 # Value of `$(SOURCES)', used by tags.am.
488 my @sources;
489 # Sources which go in the distribution.
490 my @dist_sources;
492 # This hash maps object file names onto their corresponding source
493 # file names. This is used to ensure that each object is created
494 # by a single source file.
495 my %object_map;
497 # This hash maps object file names onto an integer value representing
498 # whether this object has been built via ordinary compilation or
499 # libtool compilation (the COMPILE_* constants).
500 my %object_compilation_map;
503 # This keeps track of the directories for which we've already
504 # created dirstamp code.
505 my %directory_map;
507 # All .P files.
508 my %dep_files;
510 # This is a list of all targets to run during "make dist".
511 my @dist_targets;
513 # Keys in this hash are the basenames of files which must depend on
514 # ansi2knr. Values are either the empty string, or the directory in
515 # which the ANSI source file appears; the directory must have a
516 # trailing `/'.
517 my %de_ansi_files;
519 # This is the name of the redirect `all' target to use.
520 my $all_target;
522 # This keeps track of which extensions we've seen (that we care
523 # about).
524 my %extension_seen;
526 # This is random scratch space for the language finish functions.
527 # Don't randomly overwrite it; examine other uses of keys first.
528 my %language_scratch;
530 # We keep track of which objects need special (per-executable)
531 # handling on a per-language basis.
532 my %lang_specific_files;
534 # This is set when `handle_dist' has finished. Once this happens,
535 # we should no longer push on dist_common.
536 my $handle_dist_run;
538 # Used to store a set of linkers needed to generate the sources currently
539 # under consideration.
540 my %linkers_used;
542 # True if we need `LINK' defined. This is a hack.
543 my $need_link;
545 # Was get_object_extension run?
546 # FIXME: This is a hack. a better switch should be found.
547 my $get_object_extension_was_run;
549 ################################################################
551 # var_SUFFIXES_trigger ($TYPE, $VALUE)
552 # ------------------------------------
553 # This is called by Automake::Variable::define() when SUFFIXES
554 # is defined ($TYPE eq '') or appended ($TYPE eq '+').
555 # The work here needs to be performed as a side-effect of the
556 # macro_define() call because SUFFIXES definitions impact
557 # on $KNOWN_EXTENSIONS_PATTERN which is used used when parsing
558 # the input am file.
559 sub var_SUFFIXES_trigger ($$)
560 {
561 my ($type, $value) = @_;
562 accept_extensions (split (' ', $value));
563 }
564 Automake::Variable::hook ('SUFFIXES', \&var_SUFFIXES_trigger);
566 ################################################################
568 ## --------------------------------- ##
569 ## Forward subroutine declarations. ##
570 ## --------------------------------- ##
571 sub register_language (%);
572 sub file_contents_internal ($$$%);
573 sub define_files_variable ($\@$$);
576 # &initialize_per_input ()
577 # ------------------------
578 # (Re)-Initialize per-Makefile.am variables.
579 sub initialize_per_input ()
580 {
581 reset_local_duplicates ();
583 $am_file_name = '';
584 $am_relative_dir = '';
586 $in_file_name = '';
587 $relative_dir = '';
589 $output_deps_greatest_timestamp = 0;
591 $output_rules = '';
592 $output_vars = '';
593 $output_trailer = '';
594 $output_all = '';
595 $output_header = '';
597 Automake::Options::reset;
598 Automake::Variable::reset;
599 Automake::Rule::reset;
601 @cond_stack = ();
603 @include_stack = ();
605 %dist_dirs = ();
607 @all = ();
608 @check = ();
609 @check_tests = ();
611 %clean_files = ();
613 @sources = ();
614 @dist_sources = ();
616 %object_map = ();
617 %object_compilation_map = ();
619 %directory_map = ();
621 %dep_files = ();
623 @dist_targets = ();
625 %de_ansi_files = ();
627 $all_target = '';
629 %extension_seen = ();
631 %language_scratch = ();
633 %lang_specific_files = ();
635 $handle_dist_run = 0;
637 $need_link = 0;
639 $get_object_extension_was_run = 0;
641 %compile_clean_files = ();
643 # We always include `.'. This isn't strictly correct.
644 %libtool_clean_directories = ('.' => 1);
645 }
648 ################################################################
650 # Initialize our list of languages that are internally supported.
652 # C.
653 register_language ('name' => 'c',
654 'Name' => 'C',
655 'config_vars' => ['CC'],
656 'ansi' => 1,
657 'autodep' => '',
658 'flags' => ['CFLAGS', 'CPPFLAGS'],
659 'compiler' => 'COMPILE',
660 'compile' => '$(CC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS) $(CPPFLAGS) $(AM_CFLAGS) $(CFLAGS)',
661 'lder' => 'CCLD',
662 'ld' => '$(CC)',
663 'linker' => 'LINK',
664 'link' => '$(CCLD) $(AM_CFLAGS) $(CFLAGS) $(AM_LDFLAGS) $(LDFLAGS) -o $@',
665 'compile_flag' => '-c',
666 'extensions' => ['.c'],
667 '_finish' => \&lang_c_finish);
669 # C++.
670 register_language ('name' => 'cxx',
671 'Name' => 'C++',
672 'config_vars' => ['CXX'],
673 'linker' => 'CXXLINK',
674 'link' => '$(CXXLD) $(AM_CXXFLAGS) $(CXXFLAGS) $(AM_LDFLAGS) $(LDFLAGS) -o $@',
675 'autodep' => 'CXX',
676 'flags' => ['CXXFLAGS', 'CPPFLAGS'],
677 'compile' => '$(CXX) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS) $(CPPFLAGS) $(AM_CXXFLAGS) $(CXXFLAGS)',
678 'compiler' => 'CXXCOMPILE',
679 'compile_flag' => '-c',
680 'output_flag' => '-o',
681 'lder' => 'CXXLD',
682 'ld' => '$(CXX)',
683 'pure' => 1,
684 'extensions' => ['.c++', '.cc', '.cpp', '.cxx', '.C']);
686 # Objective C.
687 register_language ('name' => 'objc',
688 'Name' => 'Objective C',
689 'config_vars' => ['OBJC'],
690 'linker' => 'OBJCLINK',,
691 'link' => '$(OBJCLD) $(AM_OBJCFLAGS) $(OBJCFLAGS) $(AM_LDFLAGS) $(LDFLAGS) -o $@',
692 'autodep' => 'OBJC',
693 'flags' => ['OBJCFLAGS', 'CPPFLAGS'],
694 'compile' => '$(OBJC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS) $(CPPFLAGS) $(AM_OBJCFLAGS) $(OBJCFLAGS)',
695 'compiler' => 'OBJCCOMPILE',
696 'compile_flag' => '-c',
697 'output_flag' => '-o',
698 'lder' => 'OBJCLD',
699 'ld' => '$(OBJC)',
700 'pure' => 1,
701 'extensions' => ['.m']);
703 # Headers.
704 register_language ('name' => 'header',
705 'Name' => 'Header',
706 'extensions' => ['.h', '.H', '.hxx', '.h++', '.hh',
707 '.hpp', '.inc'],
708 # No output.
709 'output_extensions' => sub { return () },
710 # Nothing to do.
711 '_finish' => sub { });
713 # Yacc (C & C++).
714 register_language ('name' => 'yacc',
715 'Name' => 'Yacc',
716 'config_vars' => ['YACC'],
717 'flags' => ['YFLAGS'],
718 'compile' => '$(YACC) $(YFLAGS) $(AM_YFLAGS)',
719 'compiler' => 'YACCCOMPILE',
720 'extensions' => ['.y'],
721 'output_extensions' => sub { (my $ext = $_[0]) =~ tr/y/c/;
722 return ($ext,) },
723 'rule_file' => 'yacc',
724 '_finish' => \&lang_yacc_finish,
725 '_target_hook' => \&lang_yacc_target_hook);
726 register_language ('name' => 'yaccxx',
727 'Name' => 'Yacc (C++)',
728 'config_vars' => ['YACC'],
729 'rule_file' => 'yacc',
730 'flags' => ['YFLAGS'],
731 'compiler' => 'YACCCOMPILE',
732 'compile' => '$(YACC) $(YFLAGS) $(AM_YFLAGS)',
733 'extensions' => ['.y++', '.yy', '.yxx', '.ypp'],
734 'output_extensions' => sub { (my $ext = $_[0]) =~ tr/y/c/;
735 return ($ext,) },
736 '_finish' => \&lang_yacc_finish,
737 '_target_hook' => \&lang_yacc_target_hook);
739 # Lex (C & C++).
740 register_language ('name' => 'lex',
741 'Name' => 'Lex',
742 'config_vars' => ['LEX'],
743 'rule_file' => 'lex',
744 'flags' => ['LFLAGS'],
745 'compile' => '$(LEX) $(LFLAGS) $(AM_LFLAGS)',
746 'compiler' => 'LEXCOMPILE',
747 'extensions' => ['.l'],
748 'output_extensions' => sub { (my $ext = $_[0]) =~ tr/l/c/;
749 return ($ext,) },
750 '_finish' => \&lang_lex_finish,
751 '_target_hook' => \&lang_lex_target_hook);
752 register_language ('name' => 'lexxx',
753 'Name' => 'Lex (C++)',
754 'config_vars' => ['LEX'],
755 'rule_file' => 'lex',
756 'flags' => ['LFLAGS'],
757 'compile' => '$(LEX) $(LFLAGS) $(AM_LFLAGS)',
758 'compiler' => 'LEXCOMPILE',
759 'extensions' => ['.l++', '.ll', '.lxx', '.lpp'],
760 'output_extensions' => sub { (my $ext = $_[0]) =~ tr/l/c/;
761 return ($ext,) },
762 '_finish' => \&lang_lex_finish,
763 '_target_hook' => \&lang_lex_target_hook);
765 # Assembler.
766 register_language ('name' => 'asm',
767 'Name' => 'Assembler',
768 'config_vars' => ['CCAS', 'CCASFLAGS'],
770 'flags' => ['CCASFLAGS'],
771 # Users can set AM_ASFLAGS to includes DEFS, INCLUDES,
772 # or anything else required. They can also set AS.
773 'compile' => '$(CCAS) $(AM_CCASFLAGS) $(CCASFLAGS)',
774 'compiler' => 'CCASCOMPILE',
775 'compile_flag' => '-c',
776 'extensions' => ['.s', '.S'],
778 # With assembly we still use the C linker.
779 '_finish' => \&lang_c_finish);
781 # Fortran 77
782 register_language ('name' => 'f77',
783 'Name' => 'Fortran 77',
784 'linker' => 'F77LINK',
785 'link' => '$(F77LD) $(AM_FFLAGS) $(FFLAGS) $(AM_LDFLAGS) $(LDFLAGS) -o $@',
786 'flags' => ['FFLAGS'],
787 'compile' => '$(F77) $(AM_FFLAGS) $(FFLAGS)',
788 'compiler' => 'F77COMPILE',
789 'compile_flag' => '-c',
790 'output_flag' => '-o',
791 'lder' => 'F77LD',
792 'ld' => '$(F77)',
793 'pure' => 1,
794 'extensions' => ['.f', '.for', '.f90']);
796 # Preprocessed Fortran 77
797 #
798 # The current support for preprocessing Fortran 77 just involves
799 # passing `$(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS)
800 # $(CPPFLAGS)' as additional flags to the Fortran 77 compiler, since
801 # this is how GNU Make does it; see the `GNU Make Manual, Edition 0.51
802 # for `make' Version 3.76 Beta' (specifically, from info file
803 # `(make)Catalogue of Rules').
804 #
805 # A better approach would be to write an Autoconf test
806 # (i.e. AC_PROG_FPP) for a Fortran 77 preprocessor, because not all
807 # Fortran 77 compilers know how to do preprocessing. The Autoconf
808 # macro AC_PROG_FPP should test the Fortran 77 compiler first for
809 # preprocessing capabilities, and then fall back on cpp (if cpp were
810 # available).
811 register_language ('name' => 'ppf77',
812 'Name' => 'Preprocessed Fortran 77',
813 'config_vars' => ['F77'],
814 'linker' => 'F77LINK',
815 'link' => '$(F77LD) $(AM_FFLAGS) $(FFLAGS) $(AM_LDFLAGS) $(LDFLAGS) -o $@',
816 'lder' => 'F77LD',
817 'ld' => '$(F77)',
818 'flags' => ['FFLAGS', 'CPPFLAGS'],
819 'compiler' => 'PPF77COMPILE',
820 'compile' => '$(F77) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS) $(CPPFLAGS) $(AM_FFLAGS) $(FFLAGS)',
821 'compile_flag' => '-c',
822 'output_flag' => '-o',
823 'pure' => 1,
824 'extensions' => ['.F']);
826 # Ratfor.
827 register_language ('name' => 'ratfor',
828 'Name' => 'Ratfor',
829 'config_vars' => ['F77'],
830 'linker' => 'F77LINK',
831 'link' => '$(F77LD) $(AM_FFLAGS) $(FFLAGS) $(AM_LDFLAGS) $(LDFLAGS) -o $@',
832 'lder' => 'F77LD',
833 'ld' => '$(F77)',
834 'flags' => ['RFLAGS', 'FFLAGS'],
835 # FIXME also FFLAGS.
836 'compile' => '$(F77) $(AM_FFLAGS) $(FFLAGS) $(AM_RFLAGS) $(RFLAGS)',
837 'compiler' => 'RCOMPILE',
838 'compile_flag' => '-c',
839 'output_flag' => '-o',
840 'pure' => 1,
841 'extensions' => ['.r']);
843 # Java via gcj.
844 register_language ('name' => 'java',
845 'Name' => 'Java',
846 'config_vars' => ['GCJ'],
847 'linker' => 'GCJLINK',
848 'link' => '$(GCJLD) $(AM_GCJFLAGS) $(GCJFLAGS) $(AM_LDFLAGS) $(LDFLAGS) -o $@',
849 'autodep' => 'GCJ',
850 'flags' => ['GCJFLAGS'],
851 'compile' => '$(GCJ) $(AM_GCJFLAGS) $(GCJFLAGS)',
852 'compiler' => 'GCJCOMPILE',
853 'compile_flag' => '-c',
854 'output_flag' => '-o',
855 'lder' => 'GCJLD',
856 'ld' => '$(GCJ)',
857 'pure' => 1,
858 'extensions' => ['.java', '.class', '.zip', '.jar']);
860 ################################################################
862 # Error reporting functions.
864 # err_am ($MESSAGE, [%OPTIONS])
865 # -----------------------------
866 # Uncategorized errors about the current Makefile.am.
867 sub err_am ($;%)
868 {
869 msg_am ('error', @_);
870 }
872 # err_ac ($MESSAGE, [%OPTIONS])
873 # -----------------------------
874 # Uncategorized errors about configure.ac.
875 sub err_ac ($;%)
876 {
877 msg_ac ('error', @_);
878 }
880 # msg_am ($CHANNEL, $MESSAGE, [%OPTIONS])
881 # ---------------------------------------
882 # Messages about about the current Makefile.am.
883 sub msg_am ($$;%)
884 {
885 my ($channel, $msg, %opts) = @_;
886 msg $channel, "${am_file}.am", $msg, %opts;
887 }
889 # msg_ac ($CHANNEL, $MESSAGE, [%OPTIONS])
890 # ---------------------------------------
891 # Messages about about configure.ac.
892 sub msg_ac ($$;%)
893 {
894 my ($channel, $msg, %opts) = @_;
895 msg $channel, $configure_ac, $msg, %opts;
896 }
898 ################################################################
900 # subst ($TEXT)
901 # -------------
902 # Return a configure-style substitution using the indicated text.
903 # We do this to avoid having the substitutions directly in automake.in;
904 # when we do that they are sometimes removed and this causes confusion
905 # and bugs.
906 sub subst ($)
907 {
908 my ($text) = @_;
909 return '@' . $text . '@';
910 }
912 ################################################################
915 # $BACKPATH
916 # &backname ($REL-DIR)
917 # --------------------
918 # If I `cd $REL-DIR', then to come back, I should `cd $BACKPATH'.
919 # For instance `src/foo' => `../..'.
920 # Works with non strictly increasing paths, i.e., `src/../lib' => `..'.
921 sub backname ($)
922 {
923 my ($file) = @_;
924 my @res;
925 foreach (split (/\//, $file))
926 {
927 next if $_ eq '.' || $_ eq '';
928 if ($_ eq '..')
929 {
930 pop @res;
931 }
932 else
933 {
934 push (@res, '..');
935 }
936 }
937 return join ('/', @res) || '.';
938 }
940 ################################################################
943 # Handle AUTOMAKE_OPTIONS variable. Return 1 on error, 0 otherwise.
944 sub handle_options
945 {
946 my $var = var ('AUTOMAKE_OPTIONS');
947 if ($var)
948 {
949 # FIXME: We should disallow conditional definitions of AUTOMAKE_OPTIONS.
950 if (process_option_list ($var->rdef (TRUE)->location,
951 $var->value_as_list_recursive (cond_filter =>
952 TRUE)))
953 {
954 return 1;
955 }
956 }
958 if ($strictness == GNITS)
959 {
960 set_option ('readme-alpha', INTERNAL);
961 set_option ('std-options', INTERNAL);
962 set_option ('check-news', INTERNAL);
963 }
965 return 0;
966 }
968 # shadow_unconditionally ($varname, $where)
969 # -----------------------------------------
970 # Return a $(variable) that contains all possible values
971 # $varname can take.
972 # If the VAR wasn't defined conditionally, return $(VAR).
973 # Otherwise we create a am__VAR_DIST variable which contains
974 # all possible values, and return $(am__VAR_DIST).
975 sub shadow_unconditionally ($$)
976 {
977 my ($varname, $where) = @_;
978 my $var = var $varname;
979 if ($var->has_conditional_contents)
980 {
981 $varname = "am__${varname}_DIST";
982 my @files = uniq ($var->value_as_list_recursive);
983 define_pretty_variable ($varname, TRUE, $where, @files);
984 }
985 return "\$($varname)"
986 }
988 # get_object_extension ($OUT)
989 # ---------------------------
990 # Return object extension. Just once, put some code into the output.
991 # OUT is the name of the output file
992 sub get_object_extension
993 {
994 my ($out) = @_;
996 # Maybe require libtool library object files.
997 my $extension = '.$(OBJEXT)';
998 $extension = '.lo' if ($out =~ /\.la$/);
1000 # Check for automatic de-ANSI-fication.
1001 $extension = '$U' . $extension
1002 if option 'ansi2knr';
1004 $get_object_extension_was_run = 1;
1006 return $extension;
1007 }
1010 # Call finish function for each language that was used.
1011 sub handle_languages
1012 {
1013 if (! option 'no-dependencies')
1014 {
1015 # Include auto-dep code. Don't include it if DEP_FILES would
1016 # be empty.
1017 if (&saw_sources_p (0) && keys %dep_files)
1018 {
1019 # Set location of depcomp.
1020 &define_variable ('depcomp', "\$(SHELL) $config_aux_dir/depcomp",
1021 INTERNAL);
1022 &define_variable ('am__depfiles_maybe', 'depfiles', INTERNAL);
1024 require_conf_file ("$am_file.am", FOREIGN, 'depcomp');
1026 my @deplist = sort keys %dep_files;
1028 # We define this as a conditional variable because BSD
1029 # make can't handle backslashes for continuing comments on
1030 # the following line.
1031 define_pretty_variable ('DEP_FILES',
1032 new Automake::Condition ('AMDEP_TRUE'),
1033 INTERNAL, @deplist);
1035 # Generate each `include' individually. Irix 6 make will
1036 # not properly include several files resulting from a
1037 # variable expansion; generating many separate includes
1038 # seems safest.
1039 $output_rules .= "\n";
1040 foreach my $iter (@deplist)
1041 {
1042 $output_rules .= (subst ('AMDEP_TRUE')
1043 . subst ('am__include')
1044 . ' '
1045 . subst ('am__quote')
1046 . $iter
1047 . subst ('am__quote')
1048 . "\n");
1049 }
1051 # Compute the set of directories to remove in distclean-depend.
1052 my @depdirs = uniq (map { dirname ($_) } @deplist);
1053 $output_rules .= &file_contents ('depend',
1054 new Automake::Location,
1055 DEPDIRS => "@depdirs");
1056 }
1057 }
1058 else
1059 {
1060 &define_variable ('depcomp', '', INTERNAL);
1061 &define_variable ('am__depfiles_maybe', '', INTERNAL);
1062 }
1064 my %done;
1066 # Is the c linker needed?
1067 my $needs_c = 0;
1068 foreach my $ext (sort keys %extension_seen)
1069 {
1070 next unless $extension_map{$ext};
1072 my $lang = $languages{$extension_map{$ext}};
1074 my $rule_file = $lang->rule_file || 'depend2';
1076 # Get information on $LANG.
1077 my $pfx = $lang->autodep;
1078 my $fpfx = ($pfx eq '') ? 'CC' : $pfx;
1080 my ($AMDEP, $FASTDEP) =
1081 (option 'no-dependencies' || $lang->autodep eq 'no')
1082 ? ('FALSE', 'FALSE') : ('AMDEP', "am__fastdep$fpfx");
1084 my %transform = ('EXT' => $ext,
1085 'PFX' => $pfx,
1086 'FPFX' => $fpfx,
1087 'AMDEP' => $AMDEP,
1088 'FASTDEP' => $FASTDEP,
1089 '-c' => $lang->compile_flag || '',
1090 'MORE-THAN-ONE'
1091 => (count_files_for_language ($lang->name) > 1));
1093 # Generate the appropriate rules for this extension.
1094 if (((! option 'no-dependencies') && $lang->autodep ne 'no')
1095 || defined $lang->compile)
1096 {
1097 # Some C compilers don't support -c -o. Use it only if really
1098 # needed.
1099 my $output_flag = $lang->output_flag || '';
1100 $output_flag = '-o'
1101 if (! $output_flag
1102 && $lang->name eq 'c'
1103 && option 'subdir-objects');
1105 # Compute a possible derived extension.
1106 # This is not used by depend2.am.
1107 my $der_ext = (&{$lang->output_extensions} ($ext))[0];
1109 $output_rules .=
1110 file_contents ($rule_file,
1111 new Automake::Location,
1112 %transform,
1113 GENERIC => 1,
1115 'DERIVED-EXT' => $der_ext,
1117 # In this situation we know that the
1118 # object is in this directory, so
1119 # $(DEPDIR) is the correct location for
1120 # dependencies.
1121 DEPBASE => '$(DEPDIR)/$*',
1122 BASE => '$*',
1123 SOURCE => '$<',
1124 OBJ => '$@',
1125 OBJOBJ => '$@',
1126 LTOBJ => '$@',
1128 COMPILE => '$(' . $lang->compiler . ')',
1129 LTCOMPILE => '$(LT' . $lang->compiler . ')',
1130 -o => $output_flag);
1131 }
1133 # Now include code for each specially handled object with this
1134 # language.
1135 my %seen_files = ();
1136 foreach my $file (@{$lang_specific_files{$lang->name}})
1137 {
1138 my ($derived, $source, $obj, $myext) = split (' ', $file);
1140 # We might see a given object twice, for instance if it is
1141 # used under different conditions.
1142 next if defined $seen_files{$obj};
1143 $seen_files{$obj} = 1;
1145 prog_error ("found " . $lang->name .
1146 " in handle_languages, but compiler not defined")
1147 unless defined $lang->compile;
1149 my $obj_compile = $lang->compile;
1151 # Rewrite each occurrence of `AM_$flag' in the compile
1152 # rule into `${derived}_$flag' if it exists.
1153 for my $flag (@{$lang->flags})
1154 {
1155 my $val = "${derived}_$flag";
1156 $obj_compile =~ s/\(AM_$flag\)/\($val\)/
1157 if set_seen ($val);
1158 }
1160 my $obj_ltcompile = '$(LIBTOOL) --mode=compile ' . $obj_compile;
1162 # We _need_ `-o' for per object rules.
1163 my $output_flag = $lang->output_flag || '-o';
1165 my $depbase = dirname ($obj);
1166 $depbase = ''
1167 if $depbase eq '.';
1168 $depbase .= '/'
1169 unless $depbase eq '';
1170 $depbase .= '$(DEPDIR)/' . basename ($obj);
1172 # Support for deansified files in subdirectories is ugly
1173 # enough to deserve an explanation.
1174 #
1175 # A Note about normal ansi2knr processing first. On
1176 #
1177 # AUTOMAKE_OPTIONS = ansi2knr
1178 # bin_PROGRAMS = foo
1179 # foo_SOURCES = foo.c
1180 #
1181 # we generate rules similar to:
1182 #
1183 # foo: foo$U.o; link ...
1184 # foo$U.o: foo$U.c; compile ...
1185 # foo_.c: foo.c; ansi2knr ...
1186 #
1187 # this is fairly compact, and will call ansi2knr depending
1188 # on the value of $U (`' or `_').
1189 #
1190 # It's harder with subdir sources. On
1191 #
1192 # AUTOMAKE_OPTIONS = ansi2knr
1193 # bin_PROGRAMS = foo
1194 # foo_SOURCES = sub/foo.c
1195 #
1196 # we have to create foo_.c in the current directory.
1197 # (Unless the user asks 'subdir-objects'.) This is important
1198 # in case the same file (`foo.c') is compiled from other
1199 # directories with different cpp options: foo_.c would
1200 # be preprocessed for only one set of options if it were
1201 # put in the subdirectory.
1202 #
1203 # Because foo$U.o must be built from either foo_.c or
1204 # sub/foo.c we can't be as concise as in the first example.
1205 # Instead we output
1206 #
1207 # foo: foo$U.o; link ...
1208 # foo_.o: foo_.c; compile ...
1209 # foo.o: sub/foo.c; compile ...
1210 # foo_.c: foo.c; ansi2knr ...
1211 #
1212 # This is why we'll now transform $rule_file twice
1213 # if we detect this case.
1214 # A first time we output the compile rule with `$U'
1215 # replaced by `_' and the source directory removed,
1216 # and another time we simply remove `$U'.
1217 #
1218 # Note that at this point $source (as computed by
1219 # &handle_single_transform_list) is `sub/foo$U.c'.
1220 # This can be confusing: it can be used as-is when
1221 # subdir-objects is set, otherwise you have to know
1222 # it really means `foo_.c' or `sub/foo.c'.
1223 my $objdir = dirname ($obj);
1224 my $srcdir = dirname ($source);
1225 if ($lang->ansi && $obj =~ /\$U/)
1226 {
1227 prog_error "`$obj' contains \$U, but `$source' doesn't."
1228 if $source !~ /\$U/;
1230 (my $source_ = $source) =~ s/\$U/_/g;
1231 # Explicitly clean the _.c files if they are in
1232 # a subdirectory. (In the current directory they get
1233 # erased by a `rm -f *_.c' rule.)
1234 $clean_files{$source_} = MOSTLY_CLEAN
1235 if $objdir ne '.';
1236 # Output an additional rule if _.c and .c are not in
1237 # the same directory. (_.c is always in $objdir.)
1238 if ($objdir ne $srcdir)
1239 {
1240 (my $obj_ = $obj) =~ s/\$U/_/g;
1241 (my $depbase_ = $depbase) =~ s/\$U/_/g;
1242 $source_ = basename ($source_);
1244 $output_rules .=
1245 file_contents ($rule_file,
1246 new Automake::Location,
1247 %transform,
1248 GENERIC => 0,
1250 DEPBASE => $depbase_,
1251 BASE => $obj_,
1252 SOURCE => $source_,
1253 OBJ => "$obj_$myext",
1254 OBJOBJ => "$obj_.obj",
1255 LTOBJ => "$obj_.lo",
1257 COMPILE => $obj_compile,
1258 LTCOMPILE => $obj_ltcompile,
1259 -o => $output_flag);
1260 $obj =~ s/\$U//g;
1261 $depbase =~ s/\$U//g;
1262 $source =~ s/\$U//g;
1263 }
1264 }
1266 $output_rules .=
1267 file_contents ($rule_file,
1268 new Automake::Location,
1269 %transform,
1270 GENERIC => 0,
1272 DEPBASE => $depbase,
1273 BASE => $obj,
1274 SOURCE => $source,
1275 # Use $myext and not `.o' here, in case
1276 # we are actually building a new source
1277 # file -- e.g. via yacc.
1278 OBJ => "$obj$myext",
1279 OBJOBJ => "$obj.obj",
1280 LTOBJ => "$obj.lo",
1282 COMPILE => $obj_compile,
1283 LTCOMPILE => $obj_ltcompile,
1284 -o => $output_flag);
1285 }
1287 # The rest of the loop is done once per language.
1288 next if defined $done{$lang};
1289 $done{$lang} = 1;
1291 # Load the language dependent Makefile chunks.
1292 my %lang = map { uc ($_) => 0 } keys %languages;
1293 $lang{uc ($lang->name)} = 1;
1294 $output_rules .= file_contents ('lang-compile',
1295 new Automake::Location,
1296 %transform, %lang);
1298 # If the source to a program consists entirely of code from a
1299 # `pure' language, for instance C++ for Fortran 77, then we
1300 # don't need the C compiler code. However if we run into
1301 # something unusual then we do generate the C code. There are
1302 # probably corner cases here that do not work properly.
1303 # People linking Java code to Fortran code deserve pain.
1304 $needs_c ||= ! $lang->pure;
1306 define_compiler_variable ($lang)
1307 if ($lang->compile);
1309 define_linker_variable ($lang)
1310 if ($lang->link);
1312 require_variables ("$am_file.am", $lang->Name . " source seen",
1313 TRUE, @{$lang->config_vars});
1315 # Call the finisher.
1316 $lang->finish;
1318 # Flags listed in `->flags' are user variables (per GNU Standards),
1319 # they should not be overridden in the Makefile...
1320 my @dont_override = @{$lang->flags};
1321 # ... and so is LDFLAGS.
1322 push @dont_override, 'LDFLAGS' if $lang->link;
1324 foreach my $flag (@dont_override)
1325 {
1326 my $var = var $flag;
1327 if ($var)
1328 {
1329 for my $cond ($var->conditions->conds)
1330 {
1331 if ($var->rdef ($cond)->owner == VAR_MAKEFILE)
1332 {
1333 msg_cond_var ('gnu', $cond, $flag,
1334 "`$flag' is a user variable, "
1335 . "you should not override it;\n"
1336 . "use `AM_$flag' instead.");
1337 }
1338 }
1339 }
1340 }
1341 }
1343 # If the project is entirely C++ or entirely Fortran 77 (i.e., 1
1344 # suffix rule was learned), don't bother with the C stuff. But if
1345 # anything else creeps in, then use it.
1346 $needs_c = 1
1347 if $need_link || suffix_rules_count > 1;
1349 if ($needs_c)
1350 {
1351 &define_compiler_variable ($languages{'c'})
1352 unless defined $done{$languages{'c'}};
1353 define_linker_variable ($languages{'c'});
1354 }
1355 }
1357 # Check to make sure a source defined in LIBOBJS is not explicitly
1358 # mentioned. This is a separate function (as opposed to being inlined
1359 # in handle_source_transform) because it isn't always appropriate to
1360 # do this check.
1361 sub check_libobjs_sources
1362 {
1363 my ($one_file, $unxformed) = @_;
1365 foreach my $prefix ('', 'EXTRA_', 'dist_', 'nodist_',
1366 'dist_EXTRA_', 'nodist_EXTRA_')
1367 {
1368 my @files;
1369 my $varname = $prefix . $one_file . '_SOURCES';
1370 my $var = var ($varname);
1371 if ($var)
1372 {
1373 @files = $var->value_as_list_recursive;
1374 }
1375 elsif ($prefix eq '')
1376 {
1377 @files = ($unxformed . '.c');
1378 }
1379 else
1380 {
1381 next;
1382 }
1384 foreach my $file (@files)
1385 {
1386 err_var ($prefix . $one_file . '_SOURCES',
1387 "automatically discovered file `$file' should not" .
1388 " be explicitly mentioned")
1389 if defined $libsources{$file};
1390 }
1391 }
1392 }
1395 # @OBJECTS
1396 # handle_single_transform_list ($VAR, $TOPPARENT, $DERIVED, $OBJ, @FILES)
1397 # -----------------------------------------------------------------------
1398 # Does much of the actual work for handle_source_transform.
1399 # Arguments are:
1400 # $VAR is the name of the variable that the source filenames come from
1401 # $TOPPARENT is the name of the _SOURCES variable which is being processed
1402 # $DERIVED is the name of resulting executable or library
1403 # $OBJ is the object extension (e.g., `$U.lo')
1404 # @FILES is the list of source files to transform
1405 # Result is a list of the names of objects
1406 # %linkers_used will be updated with any linkers needed
1407 sub handle_single_transform_list ($$$$@)
1408 {
1409 my ($var, $topparent, $derived, $obj, @files) = @_;
1410 my @result = ();
1411 my $nonansi_obj = $obj;
1412 $nonansi_obj =~ s/\$U//g;
1414 # Turn sources into objects. We use a while loop like this
1415 # because we might add to @files in the loop.
1416 while (scalar @files > 0)
1417 {
1418 $_ = shift @files;
1420 # Configure substitutions in _SOURCES variables are errors.
1421 if (/^\@.*\@$/)
1422 {
1423 my $parent_msg = '';
1424 $parent_msg = "\nand is referred to from `$topparent'"
1425 if $topparent ne $var->name;
1426 err_var ($var,
1427 "`" . $var->name . "' includes configure substitution `$_'"
1428 . $parent_msg . ";\nconfigure " .
1429 "substitutions are not allowed in _SOURCES variables");
1430 next;
1431 }
1433 # If the source file is in a subdirectory then the `.o' is put
1434 # into the current directory, unless the subdir-objects option
1435 # is in effect.
1437 # Split file name into base and extension.
1438 next if ! /^(?:(.*)\/)?([^\/]*)($KNOWN_EXTENSIONS_PATTERN)$/;
1439 my $full = $_;
1440 my $directory = $1 || '';
1441 my $base = $2;
1442 my $extension = $3;
1444 # We must generate a rule for the object if it requires its own flags.
1445 my $renamed = 0;
1446 my ($linker, $object);
1448 # This records whether we've seen a derived source file (e.g.
1449 # yacc output).
1450 my $derived_source = 0;
1452 # This holds the `aggregate context' of the file we are
1453 # currently examining. If the file is compiled with
1454 # per-object flags, then it will be the name of the object.
1455 # Otherwise it will be `AM'. This is used by the target hook
1456 # language function.
1457 my $aggregate = 'AM';
1459 $extension = &derive_suffix ($extension, $nonansi_obj);
1460 my $lang;
1461 if ($extension_map{$extension} &&
1462 ($lang = $languages{$extension_map{$extension}}))
1463 {
1464 # Found the language, so see what it says.
1465 &saw_extension ($extension);
1467 # Note: computed subr call. The language rewrite function
1468 # should return one of the LANG_* constants. It could
1469 # also return a list whose first value is such a constant
1470 # and whose second value is a new source extension which
1471 # should be applied. This means this particular language
1472 # generates another source file which we must then process
1473 # further.
1474 my $subr = \&{'lang_' . $lang->name . '_rewrite'};
1475 my ($r, $source_extension)
1476 = &$subr ($directory, $base, $extension);
1477 # Skip this entry if we were asked not to process it.
1478 next if $r == LANG_IGNORE;
1480 # Now extract linker and other info.
1481 $linker = $lang->linker;
1483 my $this_obj_ext;
1484 if (defined $source_extension)
1485 {
1486 $this_obj_ext = $source_extension;
1487 $derived_source = 1;
1488 }
1489 elsif ($lang->ansi)
1490 {
1491 $this_obj_ext = $obj;
1492 }
1493 else
1494 {
1495 $this_obj_ext = $nonansi_obj;
1496 }
1497 $object = $base . $this_obj_ext;
1499 # Do we have per-executable flags for this executable?
1500 my $have_per_exec_flags = 0;
1501 foreach my $flag (@{$lang->flags})
1502 {
1503 if (set_seen ("${derived}_$flag"))
1504 {
1505 $have_per_exec_flags = 1;
1506 last;
1507 }
1508 }
1510 if ($have_per_exec_flags)
1511 {
1512 # We have a per-executable flag in effect for this
1513 # object. In this case we rewrite the object's
1514 # name to ensure it is unique. We also require
1515 # the `compile' program to deal with compilers
1516 # where `-c -o' does not work.
1518 # We choose the name `DERIVED_OBJECT' to ensure
1519 # (1) uniqueness, and (2) continuity between
1520 # invocations. However, this will result in a
1521 # name that is too long for losing systems, in
1522 # some situations. So we provide _SHORTNAME to
1523 # override.
1525 my $dname = $derived;
1526 my $var = var ($derived . '_SHORTNAME');
1527 if ($var)
1528 {
1529 # FIXME: should use the same Condition as
1530 # the _SOURCES variable. But this is really
1531 # silly overkill -- nobody should have
1532 # conditional shortnames.
1533 $dname = $var->variable_value;
1534 }
1535 $object = $dname . '-' . $object;
1537 require_conf_file ("$am_file.am", FOREIGN, 'compile')
1538 if $lang->name eq 'c';
1540 prog_error ($lang->name . " flags defined without compiler")
1541 if ! defined $lang->compile;
1543 $renamed = 1;
1544 }
1546 # If rewrite said it was ok, put the object into a
1547 # subdir.
1548 if ($r == LANG_SUBDIR && $directory ne '')
1549 {
1550 $object = $directory . '/' . $object;
1551 }
1553 # If doing dependency tracking, then we can't print
1554 # the rule. If we have a subdir object, we need to
1555 # generate an explicit rule. Actually, in any case
1556 # where the object is not in `.' we need a special
1557 # rule. The per-object rules in this case are
1558 # generated later, by handle_languages.
1559 if ($renamed || $directory ne '')
1560 {
1561 my $obj_sans_ext = substr ($object, 0,
1562 - length ($this_obj_ext));
1563 my $full_ansi = $full;
1564 if ($lang->ansi && option 'ansi2knr')
1565 {
1566 $full_ansi =~ s/$KNOWN_EXTENSIONS_PATTERN$/\$U$&/;
1567 $obj_sans_ext .= '$U';
1568 }
1570 my $val = ("$full_ansi $obj_sans_ext "
1571 # Only use $this_obj_ext in the derived
1572 # source case because in the other case we
1573 # *don't* want $(OBJEXT) to appear here.
1574 . ($derived_source ? $this_obj_ext : '.o'));
1576 # If we renamed the object then we want to use the
1577 # per-executable flag name. But if this is simply a
1578 # subdir build then we still want to use the AM_ flag
1579 # name.
1580 if ($renamed)
1581 {
1582 $val = "$derived $val";
1583 $aggregate = $derived;
1584 }
1585 else
1586 {
1587 $val = "AM $val";
1588 }
1590 # Each item on this list is a string consisting of
1591 # four space-separated values: the derived flag prefix
1592 # (e.g. for `foo_CFLAGS', it is `foo'), the name of the
1593 # source file, the base name of the output file, and
1594 # the extension for the object file.
1595 push (@{$lang_specific_files{$lang->name}}, $val);
1596 }
1597 }
1598 elsif ($extension eq $nonansi_obj)
1599 {
1600 # This is probably the result of a direct suffix rule.
1601 # In this case we just accept the rewrite.
1602 $object = "$base$extension";
1603 $linker = '';
1604 }
1605 else
1606 {
1607 # No error message here. Used to have one, but it was
1608 # very unpopular.
1609 # FIXME: we could potentially do more processing here,
1610 # perhaps treating the new extension as though it were a
1611 # new source extension (as above). This would require
1612 # more restructuring than is appropriate right now.
1613 next;
1614 }
1616 err_am "object `$object' created by `$full' and `$object_map{$object}'"
1617 if (defined $object_map{$object}
1618 && $object_map{$object} ne $full);
1620 my $comp_val = (($object =~ /\.lo$/)
1621 ? COMPILE_LIBTOOL : COMPILE_ORDINARY);
1622 (my $comp_obj = $object) =~ s/\.lo$/.\$(OBJEXT)/;
1623 if (defined $object_compilation_map{$comp_obj}
1624 && $object_compilation_map{$comp_obj} != 0
1625 # Only see the error once.
1626 && ($object_compilation_map{$comp_obj}
1627 != (COMPILE_LIBTOOL | COMPILE_ORDINARY))
1628 && $object_compilation_map{$comp_obj} != $comp_val)
1629 {
1630 err_am "object `$comp_obj' created both with libtool and without";
1631 }
1632 $object_compilation_map{$comp_obj} |= $comp_val;
1634 if (defined $lang)
1635 {
1636 # Let the language do some special magic if required.
1637 $lang->target_hook ($aggregate, $object, $full);
1638 }
1640 if ($derived_source)
1641 {
1642 prog_error ($lang->name . " has automatic dependency tracking")
1643 if $lang->autodep ne 'no';
1644 # Make sure this new source file is handled next. That will
1645 # make it appear to be at the right place in the list.
1646 unshift (@files, $object);
1647 # Distribute derived sources unless the source they are
1648 # derived from is not.
1649 &push_dist_common ($object)
1650 unless ($topparent =~ /^(?:nobase_)?nodist_/);
1651 next;
1652 }
1654 $linkers_used{$linker} = 1;
1656 push (@result, $object);
1658 if (! defined $object_map{$object})
1659 {
1660 my @dep_list = ();
1661 $object_map{$object} = $full;
1663 # If resulting object is in subdir, we need to make
1664 # sure the subdir exists at build time.
1665 if ($object =~ /\//)
1666 {
1667 # FIXME: check that $DIRECTORY is somewhere in the
1668 # project
1670 # For Java, the way we're handling it right now, a
1671 # `..' component doesn't make sense.
1672 if ($lang->name eq 'java' && $object =~ /(\/|^)\.\.\//)
1673 {
1674 err_am "`$full' should not contain a `..' component";
1675 }
1677 # Make sure object is removed by `make mostlyclean'.
1678 $compile_clean_files{$object} = MOSTLY_CLEAN;
1679 # If we have a libtool object then we also must remove
1680 # the ordinary .o.
1681 if ($object =~ /\.lo$/)
1682 {
1683 (my $xobj = $object) =~ s,lo$,\$(OBJEXT),;
1684 $compile_clean_files{$xobj} = MOSTLY_CLEAN;
1686 # Remove any libtool object in this directory.
1687 $libtool_clean_directories{$directory} = 1;
1688 }
1690 push (@dep_list, require_build_directory ($directory));
1692 # If we're generating dependencies, we also want
1693 # to make sure that the appropriate subdir of the
1694 # .deps directory is created.
1695 push (@dep_list,
1696 require_build_directory ($directory . '/$(DEPDIR)'))
1697 unless option 'no-dependencies';
1698 }
1700 &pretty_print_rule ($object . ':', "\t", @dep_list)
1701 if scalar @dep_list > 0;
1702 }
1704 # Transform .o or $o file into .P file (for automatic
1705 # dependency code).
1706 if ($lang && $lang->autodep ne 'no')
1707 {
1708 my $depfile = $object;
1709 $depfile =~ s/\.([^.]*)$/.P$1/;
1710 $depfile =~ s/\$\(OBJEXT\)$/o/;
1711 $dep_files{dirname ($depfile) . '/$(DEPDIR)/'
1712 . basename ($depfile)} = 1;
1713 }
1714 }
1716 return @result;
1717 }
1720 # $LINKER
1721 # define_objects_from_sources ($VAR, $OBJVAR, $NODEFINE, $ONE_FILE,
1722 # $OBJ, $PARENT, $TOPPARENT, $WHERE)
1723 # ---------------------------------------------------------------------
1724 # Define an _OBJECTS variable for a _SOURCES variable (or subvariable)
1725 #
1726 # Arguments are:
1727 # $VAR is the name of the _SOURCES variable
1728 # $OBJVAR is the name of the _OBJECTS variable if known (otherwise
1729 # it will be generated and returned).
1730 # $NODEFINE is a boolean: if true, $OBJVAR will not be defined (but
1731 # work done to determine the linker will be).
1732 # $ONE_FILE is the canonical (transformed) name of object to build
1733 # $OBJ is the object extension (i.e. either `.o' or `.lo').
1734 # $TOPPARENT is the _SOURCES variable being processed.
1735 # $WHERE context into which this definition is done
1736 #
1737 # Result is a pair ($LINKER, $OBJVAR):
1738 # $LINKER is a boolean, true if a linker is needed to deal with the objects
1739 sub define_objects_from_sources ($$$$$$$)
1740 {
1741 my ($var, $objvar, $nodefine, $one_file, $obj, $topparent, $where) = @_;
1743 my $needlinker = "";
1745 transform_variable_recursively
1746 ($var, $objvar, 'am__objects', $nodefine, $where,
1747 # The transform code to run on each filename.
1748 sub {
1749 my ($subvar, $val, $cond, $full_cond) = @_;
1750 my @trans = &handle_single_transform_list ($subvar, $topparent,
1751 $one_file, $obj, $val);
1752 $needlinker = "true" if @trans;
1753 return @trans;
1754 });
1756 return $needlinker;
1757 }
1760 # Handle SOURCE->OBJECT transform for one program or library.
1761 # Arguments are:
1762 # canonical (transformed) name of object to build
1763 # actual name of object to build
1764 # object extension (i.e. either `.o' or `$o'.
1765 # Return result is name of linker variable that must be used.
1766 # Empty return means just use `LINK'.
1767 sub handle_source_transform
1768 {
1769 # one_file is canonical name. unxformed is given name. obj is
1770 # object extension.
1771 my ($one_file, $unxformed, $obj, $where) = @_;
1773 my ($linker) = '';
1775 # No point in continuing if _OBJECTS is defined.
1776 return if reject_var ($one_file . '_OBJECTS',
1777 $one_file . '_OBJECTS should not be defined');
1779 my %used_pfx = ();
1780 my $needlinker;
1781 %linkers_used = ();
1782 foreach my $prefix ('', 'EXTRA_', 'dist_', 'nodist_',
1783 'dist_EXTRA_', 'nodist_EXTRA_')
1784 {
1785 my $varname = $prefix . $one_file . "_SOURCES";
1786 my $var = var $varname;
1787 next unless $var;
1789 # We are going to define _OBJECTS variables using the prefix.
1790 # Then we glom them all together. So we can't use the null
1791 # prefix here as we need it later.
1792 my $xpfx = ($prefix eq '') ? 'am_' : $prefix;
1794 # Keep track of which prefixes we saw.
1795 $used_pfx{$xpfx} = 1
1796 unless $prefix =~ /EXTRA_/;
1798 push @sources, "\$($varname)";
1799 push @dist_sources, shadow_unconditionally ($varname, $where)
1800 unless ($prefix =~ /^nodist_/);
1802 $needlinker |=
1803 define_objects_from_sources ($varname,
1804 $xpfx . $one_file . '_OBJECTS',
1805 $prefix =~ /EXTRA_/,
1806 $one_file, $obj, $varname, $where);
1807 }
1808 if ($needlinker)
1809 {
1810 $linker ||= &resolve_linker (%linkers_used);
1811 }
1813 my @keys = sort keys %used_pfx;
1814 if (scalar @keys == 0)
1815 {
1816 # The default source for libfoo.la is libfoo.c, but for
1817 # backward compatibility we first look at libfoo_la.c
1818 my $old_default_source = "$one_file.c";
1819 (my $default_source = $unxformed) =~ s,(\.[^./\\]*)?$,.c,;
1820 if ($old_default_source ne $default_source
1821 && (rule $old_default_source || -f $old_default_source))
1822 {
1823 my $loc = $where->clone;
1824 $loc->pop_context;
1825 msg ('obsolete', $loc,
1826 "the default source for `$unxformed' has been changed "
1827 . "to `$default_source'.\n(Using `$old_default_source' for "
1828 . "backward compatibility.)");
1829 $default_source = $old_default_source;
1830 }
1832 &define_variable ($one_file . "_SOURCES", $default_source, $where);
1833 push (@sources, $default_source);
1834 push (@dist_sources, $default_source);
1836 %linkers_used = ();
1837 my (@result) =
1838 &handle_single_transform_list ($one_file . '_SOURCES',
1839 $one_file . '_SOURCES',
1840 $one_file, $obj,
1841 $default_source);
1842 $linker ||= &resolve_linker (%linkers_used);
1843 define_pretty_variable ($one_file . '_OBJECTS', TRUE, $where, @result);
1844 }
1845 else
1846 {
1847 @keys = map { '$(' . $_ . $one_file . '_OBJECTS)' } @keys;
1848 define_pretty_variable ($one_file . '_OBJECTS', TRUE, $where, @keys);
1849 }
1851 # If we want to use `LINK' we must make sure it is defined.
1852 if ($linker eq '')
1853 {
1854 $need_link = 1;
1855 }
1857 return $linker;
1858 }
1861 # handle_lib_objects ($XNAME, $VAR)
1862 # ---------------------------------
1863 # Special-case ALLOCA and LIBOBJS substitutions in _LDADD or _LIBADD variables.
1864 # Also, generate _DEPENDENCIES variable if appropriate.
1865 # Arguments are:
1866 # transformed name of object being built, or empty string if no object
1867 # name of _LDADD/_LIBADD-type variable to examine
1868 # Returns 1 if LIBOBJS seen, 0 otherwise.
1869 sub handle_lib_objects
1870 {
1871 my ($xname, $varname) = @_;
1873 my $var = var ($varname);
1874 prog_error "handle_lib_objects: `$varname' undefined"
1875 unless $var;
1876 prog_error "handle_lib_objects: unexpected variable name `$varname'"
1877 unless $varname =~ /^(.*)(?:LIB|LD)ADD$/;
1878 my $prefix = $1 || 'AM_';
1880 my $seen_libobjs = 0;
1881 my $flagvar = 0;
1883 transform_variable_recursively
1884 ($varname, $xname . '_DEPENDENCIES', 'am__DEPENDENCIES',
1885 ! $xname, INTERNAL,
1886 # Transformation function, run on each filename.
1887 sub {
1888 my ($subvar, $val, $cond, $full_cond) = @_;
1890 if ($val =~ /^-/)
1891 {
1892 # Skip -lfoo and -Ldir silently; these are explicitly allowed.
1893 if ($val !~ /^-[lL]/ &&
1894 # Skip -dlopen and -dlpreopen; these are explicitly allowed
1895 # for Libtool libraries or programs. (Actually we are a bit
1896 # laxest here since this code also applies to non-libtool
1897 # libraries or programs, for which -dlopen and -dlopreopen
1898 # are pure non-sence. Diagnosting this doesn't seems very
1899 # important: the developer will quickly get complaints from
1900 # the linker.)
1901 $val !~ /^-dl(?:pre)?open$/ &&
1902 # Only get this error once.
1903 ! $flagvar)
1904 {
1905 $flagvar = 1;
1906 # FIXME: should display a stack of nested variables
1907 # as context when $var != $subvar.
1908 err_var ($var, "linker flags such as `$val' belong in "
1909 . "`${prefix}LDFLAGS");
1910 }
1911 return ();
1912 }
1913 elsif ($val !~ /^\@.*\@$/)
1914 {
1915 # Assume we have a file of some sort, and output it into the
1916 # dependency variable. Autoconf substitutions are not output;
1917 # rarely is a new dependency substituted into e.g. foo_LDADD
1918 # -- but bad things (e.g. -lX11) are routinely substituted.
1919 # Note that LIBOBJS and ALLOCA are exceptions to this rule,
1920 # and handled specially below.
1921 return $val;
1922 }
1923 elsif ($val =~ /^\@(LT)?LIBOBJS\@$/)
1924 {
1925 handle_LIBOBJS ($subvar, $full_cond, $1);
1926 $seen_libobjs = 1;
1927 return $val;
1928 }
1929 elsif ($val =~ /^\@(LT)?ALLOCA\@$/)
1930 {
1931 handle_ALLOCA ($subvar, $full_cond, $1);
1932 return $val;
1933 }
1934 else
1935 {
1936 return ();
1937 }
1938 });
1940 return $seen_libobjs;
1941 }
1943 sub handle_LIBOBJS ($$$)
1944 {
1945 my ($var, $cond, $lt) = @_;
1946 $lt ||= '';
1947 my $myobjext = ($1 ? 'l' : '') . 'o';
1949 $var->requires_variables ("\@${lt}LIBOBJS\@ used", $lt . 'LIBOBJS')
1950 if ! keys %libsources;
1952 foreach my $iter (keys %libsources)
1953 {
1954 if ($iter =~ /\.[cly]$/)
1955 {
1956 &saw_extension ($&);
1957 &saw_extension ('.c');
1958 }
1960 if ($iter =~ /\.h$/)
1961 {
1962 require_file_with_macro ($cond, $var, FOREIGN, $iter);
1963 }
1964 elsif ($iter ne 'alloca.c')
1965 {
1966 my $rewrite = $iter;
1967 $rewrite =~ s/\.c$/.P$myobjext/;
1968 $dep_files{'$(DEPDIR)/' . $rewrite} = 1;
1969 $rewrite = "^" . quotemeta ($iter) . "\$";
1970 # Only require the file if it is not a built source.
1971 my $bs = var ('BUILT_SOURCES');
1972 if (! $bs || ! grep (/$rewrite/, $bs->value_as_list_recursive))
1973 {
1974 require_file_with_macro ($cond, $var, FOREIGN, $iter);
1975 }
1976 }
1977 }
1978 }
1980 sub handle_ALLOCA ($$$)
1981 {
1982 my ($var, $cond, $lt) = @_;
1983 my $myobjext = ($lt ? 'l' : '') . 'o';
1984 $lt ||= '';
1985 $var->requires_variables ("\@${lt}ALLOCA\@ used", $lt . 'ALLOCA');
1986 $dep_files{'$(DEPDIR)/alloca.P' . $myobjext} = 1;
1987 require_file_with_macro ($cond, $var, FOREIGN, 'alloca.c');
1988 &saw_extension ('c');
1989 }
1991 # Canonicalize the input parameter
1992 sub canonicalize
1993 {
1994 my ($string) = @_;
1995 $string =~ tr/A-Za-z0-9_\@/_/c;
1996 return $string;
1997 }
1999 # Canonicalize a name, and check to make sure the non-canonical name
2000 # is never used. Returns canonical name. Arguments are name and a
2001 # list of suffixes to check for.
2002 sub check_canonical_spelling
2003 {
2004 my ($name, @suffixes) = @_;
2006 my $xname = &canonicalize ($name);
2007 if ($xname ne $name)
2008 {
2009 foreach my $xt (@suffixes)
2010 {
2011 reject_var ("$name$xt", "use `$xname$xt', not `$name$xt'");
2012 }
2013 }
2015 return $xname;
2016 }
2019 # handle_compile ()
2020 # -----------------
2021 # Set up the compile suite.
2022 sub handle_compile ()
2023 {
2024 return
2025 unless $get_object_extension_was_run;
2027 # Boilerplate.
2028 my $default_includes = '';
2029 if (! option 'nostdinc')
2030 {
2031 $default_includes = ' -I. -I$(srcdir)';
2033 my $var = var 'CONFIG_HEADER';
2034 if ($var)
2035 {
2036 foreach my $hdr (split (' ', $var->variable_value))
2037 {
2038 $default_includes .= ' -I' . dirname ($hdr);
2039 }
2040 }
2041 }
2043 my (@mostly_rms, @dist_rms);
2044 foreach my $item (sort keys %compile_clean_files)
2045 {
2046 if ($compile_clean_files{$item} == MOSTLY_CLEAN)
2047 {
2048 push (@mostly_rms, "\t-rm -f $item");
2049 }
2050 elsif ($compile_clean_files{$item} == DIST_CLEAN)
2051 {
2052 push (@dist_rms, "\t-rm -f $item");
2053 }
2054 else
2055 {
2056 prog_error 'invalid entry in %compile_clean_files';
2057 }
2058 }
2060 my ($coms, $vars, $rules) =
2061 &file_contents_internal (1, "$libdir/am/compile.am",
2062 new Automake::Location,
2063 ('DEFAULT_INCLUDES' => $default_includes,
2064 'MOSTLYRMS' => join ("\n", @mostly_rms),
2065 'DISTRMS' => join ("\n", @dist_rms)));
2066 $output_vars .= $vars;
2067 $output_rules .= "$coms$rules";
2069 # Check for automatic de-ANSI-fication.
2070 if (option 'ansi2knr')
2071 {
2072 my ($ansi2knr_filename, $ansi2knr_where) = @{option 'ansi2knr'};
2073 my $ansi2knr_dir = '';
2075 require_variables ($ansi2knr_where, "option `ansi2knr' is used",
2076 TRUE, "ANSI2KNR", "U");
2078 # topdir is where ansi2knr should be.
2079 if ($ansi2knr_filename eq 'ansi2knr')
2080 {
2081 # Only require ansi2knr files if they should appear in
2082 # this directory.
2083 require_file ($ansi2knr_where, FOREIGN,
2084 'ansi2knr.c', 'ansi2knr.1');
2086 # ansi2knr needs to be built before subdirs, so unshift it.
2087 unshift (@all, '$(ANSI2KNR)');
2088 }
2089 else
2090 {
2091 $ansi2knr_dir = dirname ($ansi2knr_filename);
2092 }
2094 $output_rules .= &file_contents ('ansi2knr',
2095 new Automake::Location,
2096 'ANSI2KNR-DIR' => $ansi2knr_dir);
2098 }
2099 }
2101 # handle_libtool ()
2102 # -----------------
2103 # Handle libtool rules.
2104 sub handle_libtool
2105 {
2106 return unless var ('LIBTOOL');
2108 # Libtool requires some files, but only at top level.
2109 require_conf_file_with_macro (TRUE, 'LIBTOOL', FOREIGN, @libtool_files)
2110 if $relative_dir eq '.';
2112 my @libtool_rms;
2113 foreach my $item (sort keys %libtool_clean_directories)
2114 {
2115 my $dir = ($item eq '.') ? '' : "$item/";
2116 # .libs is for Unix, _libs for DOS.
2117 push (@libtool_rms, "\t-rm -rf ${dir}.libs ${dir}_libs");
2118 }
2120 # Output the libtool compilation rules.
2121 $output_rules .= &file_contents ('libtool',
2122 new Automake::Location,
2123 LTRMS => join ("\n", @libtool_rms));
2124 }
2126 # handle_programs ()
2127 # ------------------
2128 # Handle C programs.
2129 sub handle_programs
2130 {
2131 my @proglist = &am_install_var ('progs', 'PROGRAMS',
2132 'bin', 'sbin', 'libexec', 'pkglib',
2133 'noinst', 'check');
2134 return if ! @proglist;
2136 my $seen_global_libobjs =
2137 var ('LDADD') && &handle_lib_objects ('', 'LDADD');
2139 foreach my $pair (@proglist)
2140 {
2141 my ($where, $one_file) = @$pair;
2143 my $seen_libobjs = 0;
2144 my $obj = &get_object_extension ($one_file);
2146 # Strip any $(EXEEXT) suffix the user might have added, or this
2147 # will confuse &handle_source_transform and &check_canonical_spelling.
2148 # We'll add $(EXEEXT) back later anyway.
2149 $one_file =~ s/\$\(EXEEXT\)$//;
2151 # Canonicalize names and check for misspellings.
2152 my $xname = &check_canonical_spelling ($one_file, '_LDADD', '_LDFLAGS',
2153 '_SOURCES', '_OBJECTS',
2154 '_DEPENDENCIES');
2156 $where->push_context ("while processing program `$one_file'");
2157 $where->set (INTERNAL->get);
2159 my $linker = &handle_source_transform ($xname, $one_file, $obj, $where);
2161 if (var ($xname . "_LDADD"))
2162 {
2163 $seen_libobjs = &handle_lib_objects ($xname, $xname . '_LDADD');
2164 }
2165 else
2166 {
2167 # User didn't define prog_LDADD override. So do it.
2168 &define_variable ($xname . '_LDADD', '$(LDADD)', $where);
2170 # This does a bit too much work. But we need it to
2171 # generate _DEPENDENCIES when appropriate.
2172 if (var ('LDADD'))
2173 {
2174 $seen_libobjs = &handle_lib_objects ($xname, 'LDADD');
2175 }
2176 }
2178 reject_var ($xname . '_LIBADD',
2179 "use `${xname}_LDADD', not `${xname}_LIBADD'");
2181 set_seen ($xname . '_DEPENDENCIES');
2182 set_seen ($xname . '_LDFLAGS');
2184 # Determine program to use for link.
2185 my $xlink;
2186 if (var ($xname . '_LINK'))
2187 {
2188 $xlink = $xname . '_LINK';
2189 }
2190 else
2191 {
2192 $xlink = $linker ? $linker : 'LINK';
2193 }
2195 # If the resulting program lies into a subdirectory,
2196 # make sure this directory will exist.
2197 my $dirstamp = require_build_directory_maybe ($one_file);
2199 $output_rules .= &file_contents ('program',
2200 $where,
2201 PROGRAM => $one_file,
2202 XPROGRAM => $xname,
2203 XLINK => $xlink,
2204 DIRSTAMP => $dirstamp,
2205 EXEEXT => '$(EXEEXT)');
2207 if ($seen_libobjs || $seen_global_libobjs)
2208 {
2209 if (var ($xname . '_LDADD'))
2210 {
2211 &check_libobjs_sources ($xname, $xname . '_LDADD');
2212 }
2213 elsif (var ('LDADD'))
2214 {
2215 &check_libobjs_sources ($xname, 'LDADD');
2216 }
2217 }
2218 }
2219 }
2222 # handle_libraries ()
2223 # -------------------
2224 # Handle libraries.
2225 sub handle_libraries
2226 {
2227 my @liblist = &am_install_var ('libs', 'LIBRARIES',
2228 'lib', 'pkglib', 'noinst', 'check');
2229 return if ! @liblist;
2231 my @prefix = am_primary_prefixes ('LIBRARIES', 0, 'lib', 'pkglib',
2232 'noinst', 'check');
2234 if (@prefix)
2235 {
2236 my $var = rvar ($prefix[0] . '_LIBRARIES');
2237 $var->requires_variables ('library used', 'RANLIB');
2238 }
2240 foreach my $pair (@liblist)
2241 {
2242 my ($where, $onelib) = @$pair;
2244 my $seen_libobjs = 0;
2245 # Check that the library fits the standard naming convention.
2246 if (basename ($onelib) !~ /^lib.*\.a/)
2247 {
2248 error $where, "`$onelib' is not a standard library name";
2249 }
2251 $where->push_context ("while processing library `$onelib'");
2252 $where->set (INTERNAL->get);
2254 my $obj = &get_object_extension ($onelib);
2256 # Canonicalize names and check for misspellings.
2257 my $xlib = &check_canonical_spelling ($onelib, '_LIBADD', '_SOURCES',
2258 '_OBJECTS', '_DEPENDENCIES',
2259 '_AR');
2261 if (! var ($xlib . '_AR'))
2262 {
2263 &define_variable ($xlib . '_AR', '$(AR) $(ARFLAGS)', $where);
2264 }
2266 # Generate support for conditional object inclusion in
2267 # libraries.
2268 if (var ($xlib . '_LIBADD'))
2269 {
2270 if (&handle_lib_objects ($xlib, $xlib . '_LIBADD'))
2271 {
2272 $seen_libobjs = 1;
2273 }
2274 }
2275 else
2276 {
2277 &define_variable ($xlib . "_LIBADD", '', $where);
2278 }
2280 reject_var ($xlib . '_LDADD',
2281 "use `${xlib}_LIBADD', not `${xlib}_LDADD'");
2283 # Make sure we at look at this.
2284 set_seen ($xlib . '_DEPENDENCIES');
2286 &handle_source_transform ($xlib, $onelib, $obj, $where);
2288 # If the resulting library lies into a subdirectory,
2289 # make sure this directory will exist.
2290 my $dirstamp = require_build_directory_maybe ($onelib);
2292 $output_rules .= &file_contents ('library',
2293 $where,
2294 LIBRARY => $onelib,
2295 XLIBRARY => $xlib,
2296 DIRSTAMP => $dirstamp);
2298 if ($seen_libobjs)
2299 {
2300 if (var ($xlib . '_LIBADD'))
2301 {
2302 &check_libobjs_sources ($xlib, $xlib . '_LIBADD');
2303 }
2304 }
2305 }
2306 }
2309 # handle_ltlibraries ()
2310 # ---------------------
2311 # Handle shared libraries.
2312 sub handle_ltlibraries
2313 {
2314 my @liblist = &am_install_var ('ltlib', 'LTLIBRARIES',
2315 'noinst', 'lib', 'pkglib', 'check');
2316 return if ! @liblist;
2318 my %instdirs;
2319 my @prefix = am_primary_prefixes ('LTLIBRARIES', 0, 'lib', 'pkglib',
2320 'noinst', 'check');
2322 if (@prefix)
2323 {
2324 my $var = rvar ($prefix[0] . '_LTLIBRARIES');
2325 $var->requires_variables ('Libtool library used', 'LIBTOOL');
2326 }
2328 my %liblocations = (); # Location (in Makefile.am) of each library.
2330 foreach my $key (@prefix)
2331 {
2332 # Get the installation directory of each library.
2333 (my $dir = $key) =~ s/^nobase_//;
2334 my $var = rvar ($key . '_LTLIBRARIES');
2335 for my $pair ($var->value_as_list_recursive (location => 1))
2336 {
2337 my ($where, $lib) = @$pair;
2338 # We reject libraries which are installed in several places,
2339 # because we don't handle this in the rules (think `-rpath').
2340 #
2341 # However, we allow the same library to be listed many times
2342 # for the same directory. This is for users who need setups
2343 # like
2344 # if COND1
2345 # lib_LTLIBRARIES = libfoo.la
2346 # endif
2347 # if COND2
2348 # lib_LTLIBRARIES = libfoo.la
2349 # endif
2350 #
2351 # Actually this will also allow
2352 # lib_LTLIBRARIES = libfoo.la libfoo.la
2353 # Diagnosing this case doesn't seem worth the plain (we'd
2354 # have to fill $instdirs on a per-condition basis, check
2355 # implied conditions, etc.)
2356 if (defined $instdirs{$lib} && $instdirs{$lib} ne $dir)
2357 {
2358 error ($where, "`$lib' is already going to be installed in "
2359 . "`$instdirs{$lib}'", partial => 1);
2360 error ($liblocations{$lib}, "`$lib' previously declared here");
2361 }
2362 else
2363 {
2364 $instdirs{$lib} = $dir;
2365 $liblocations{$lib} = $where->clone;
2366 }
2367 }
2368 }
2370 foreach my $pair (@liblist)
2371 {
2372 my ($where, $onelib) = @$pair;
2374 my $seen_libobjs = 0;
2375 my $obj = &get_object_extension ($onelib);
2377 # Canonicalize names and check for misspellings.
2378 my $xlib = &check_canonical_spelling ($onelib, '_LIBADD', '_LDFLAGS',
2379 '_SOURCES', '_OBJECTS',
2380 '_DEPENDENCIES');
2382 # Check that the library fits the standard naming convention.
2383 my $libname_rx = "^lib.*\.la";
2384 my $ldvar = var ("${xlib}_LDFLAGS") || var ('AM_LDFLAGS');
2385 my $ldvar2 = var ('LDFLAGS');
2386 if (($ldvar && grep (/-module/, $ldvar->value_as_list_recursive))
2387 || ($ldvar2 && grep (/-module/, $ldvar2->value_as_list_recursive)))
2388 {
2389 # Relax name checking for libtool modules.
2390 $libname_rx = "\.la";
2391 }
2392 if (basename ($onelib) !~ /$libname_rx$/)
2393 {
2394 msg ('error-gnu/warn', $where,
2395 "`$onelib' is not a standard libtool library name");
2396 }
2398 $where->push_context ("while processing Libtool library `$onelib'");
2399 $where->set (INTERNAL->get);
2401 # Make sure we at look at these.
2402 set_seen ($xlib . '_LDFLAGS');
2403 set_seen ($xlib . '_DEPENDENCIES');
2405 # Generate support for conditional object inclusion in
2406 # libraries.
2407 if (var ($xlib . '_LIBADD'))
2408 {
2409 if (&handle_lib_objects ($xlib, $xlib . '_LIBADD'))
2410 {
2411 $seen_libobjs = 1;
2412 }
2413 }
2414 else
2415 {
2416 &define_variable ($xlib . "_LIBADD", '', $where);
2417 }
2419 reject_var ("${xlib}_LDADD",
2420 "use `${xlib}_LIBADD', not `${xlib}_LDADD'");
2423 my $linker = &handle_source_transform ($xlib, $onelib, $obj, $where);
2425 # Determine program to use for link.
2426 my $xlink;
2427 if (var ($xlib . '_LINK'))
2428 {
2429 $xlink = $xlib . '_LINK';
2430 }
2431 else
2432 {
2433 $xlink = $linker ? $linker : 'LINK';
2434 }
2436 my $rpath;
2437 if ($instdirs{$onelib} eq 'EXTRA'
2438 || $instdirs{$onelib} eq 'noinst'
2439 || $instdirs{$onelib} eq 'check')
2440 {
2441 # It's an EXTRA_ library, so we can't specify -rpath,
2442 # because we don't know where the library will end up.
2443 # The user probably knows, but generally speaking automake
2444 # doesn't -- and in fact configure could decide
2445 # dynamically between two different locations.
2446 $rpath = '';
2447 }
2448 else
2449 {
2450 $rpath = ('-rpath $(' . $instdirs{$onelib} . 'dir)');
2451 }
2453 # If the resulting library lies into a subdirectory,
2454 # make sure this directory will exist.
2455 my $dirstamp = require_build_directory_maybe ($onelib);
2457 # Remember to cleanup .libs/ in this directory.
2458 my $dirname = dirname $onelib;
2459 $libtool_clean_directories{$dirname} = 1;
2461 $output_rules .= &file_contents ('ltlibrary',
2462 $where,
2463 LTLIBRARY => $onelib,
2464 XLTLIBRARY => $xlib,
2465 RPATH => $rpath,
2466 XLINK => $xlink,
2467 DIRSTAMP => $dirstamp);
2468 if ($seen_libobjs)
2469 {
2470 if (var ($xlib . '_LIBADD'))
2471 {
2472 &check_libobjs_sources ($xlib, $xlib . '_LIBADD');
2473 }
2474 }
2475 }
2476 }
2478 # See if any _SOURCES variable were misspelled.
2479 sub check_typos ()
2480 {
2481 # It is ok if the user sets this particular variable.
2482 set_seen 'AM_LDFLAGS';
2484 foreach my $var (variables)
2485 {
2486 my $varname = $var->name;
2487 # A configure variable is always legitimate.
2488 next if exists $configure_vars{$varname};
2490 my $check = 0;
2491 foreach my $primary ('_SOURCES', '_LIBADD', '_LDADD', '_LDFLAGS',
2492 '_DEPENDENCIES')
2493 {
2494 if ($varname =~ /$primary$/)
2495 {
2496 $check = 1;
2497 last;
2498 }
2499 }
2500 next unless $check;
2502 for my $cond ($var->conditions->conds)
2503 {
2504 msg_var 'syntax', $var, "unused variable: `$varname'"
2505 unless $var->rdef ($cond)->seen;
2506 }
2507 }
2508 }
2511 # Handle scripts.
2512 sub handle_scripts
2513 {
2514 # NOTE we no longer automatically clean SCRIPTS, because it is
2515 # useful to sometimes distribute scripts verbatim. This happens
2516 # e.g. in Automake itself.
2517 &am_install_var ('-candist', 'scripts', 'SCRIPTS',
2518 'bin', 'sbin', 'libexec', 'pkgdata',
2519 'noinst', 'check');
2520 }
2525 ## ------------------------ ##
2526 ## Handling Texinfo files. ##
2527 ## ------------------------ ##
2529 # ($OUTFILE, $VFILE, @CLEAN_FILES)
2530 # &scan_texinfo_file ($FILENAME)
2531 # ------------------------------
2532 # $OUTFILE - name of the info file produced by $FILENAME.
2533 # $VFILE - name of the version.texi file used (undef if none).
2534 # @CLEAN_FILES - list of byproducts (indexes etc.)
2535 sub scan_texinfo_file ($)
2536 {
2537 my ($filename) = @_;
2539 # Some of the following extensions are always created, no matter
2540 # whether indexes are used or not. Other (like cps, fns, ... pgs)
2541 # are only created when they are used. We used to scan $FILENAME
2542 # for their use, but that is not enough: they could be used in
2543 # included files. We can't scan included files because we don't
2544 # know the include path. Therefore we always erase these files, no
2545 # matter whether they are used or not.
2546 #
2547 # (tmp is only created if an @macro is used and a certain e-TeX
2548 # feature is not available.)
2549 my %clean_suffixes =
2550 map { $_ => 1 } (qw(aux log toc tmp
2551 cp cps
2552 fn fns
2553 ky kys
2554 vr vrs
2555 tp tps
2556 pg pgs)); # grep 'new.*index' texinfo.tex
2558 my $texi = new Automake::XFile "< $filename";
2559 verb "reading $filename";
2561 my ($outfile, $vfile);
2562 while ($_ = $texi->getline)
2563 {
2564 if (/^\@setfilename +(\S+)/)
2565 {
2566 # Honor only the first @setfilename. (It's possible to have
2567 # more occurrences later if the manual shows examples of how
2568 # to use @setfilename...)
2569 next if $outfile;
2571 $outfile = $1;
2572 if ($outfile =~ /\.(.+)$/ && $1 ne 'info')
2573 {
2574 error ("$filename:$.",
2575 "output `$outfile' has unrecognized extension");
2576 return;
2577 }
2578 }
2579 # A "version.texi" file is actually any file whose name matches
2580 # "vers*.texi".
2581 elsif (/^\@include\s+(vers[^.]*\.texi)\s*$/)
2582 {
2583 $vfile = $1;
2584 }
2586 # Try to find new or unused indexes.
2588 # Creating a new category of index.
2589 elsif (/^\@def(code)?index (\w+)/)
2590 {
2591 $clean_suffixes{$2} = 1;
2592 $clean_suffixes{"$2s"} = 1;
2593 }
2595 # Merging an index into an another.
2596 elsif (/^\@syn(code)?index (\w+) (\w+)/)
2597 {
2598 delete $clean_suffixes{"$2s"};
2599 $clean_suffixes{"$3s"} = 1;
2600 }
2602 }
2604 if (! $outfile)
2605 {
2606 err_am "`$filename' missing \@setfilename";
2607 return;
2608 }
2610 my $infobase = basename ($filename);
2611 $infobase =~ s/\.te?xi(nfo)?$//;
2612 return ($outfile, $vfile,
2613 map { "$infobase.$_" } (sort keys %clean_suffixes));
2614 }
2617 # ($DIRSTAMP, @CLEAN_FILES)
2618 # output_texinfo_build_rules ($SOURCE, $DEST, $INSRC, @DEPENDENCIES)
2619 # ------------------------------------------------------------------
2620 # SOURCE - the source Texinfo file
2621 # DEST - the destination Info file
2622 # INSRC - wether DEST should be built in the source tree
2623 # DEPENDENCIES - known dependencies
2624 sub output_texinfo_build_rules ($$$@)
2625 {
2626 my ($source, $dest, $insrc, @deps) = @_;
2628 # Split `a.texi' into `a' and `.texi'.
2629 my ($spfx, $ssfx) = ($source =~ /^(.*?)(\.[^.]*)?$/);
2630 my ($dpfx, $dsfx) = ($dest =~ /^(.*?)(\.[^.]*)?$/);
2632 $ssfx ||= "";
2633 $dsfx ||= "";
2635 # We can output two kinds of rules: the "generic" rules use Make
2636 # suffix rules and are appropriate when $source and $dest do not lie
2637 # in a sub-directory; the "specific" rules are needed in the other
2638 # case.
2639 #
2640 # The former are output only once (this is not really apparent here,
2641 # but just remember that some logic deeper in Automake will not
2642 # output the same rule twice); while the later need to be output for
2643 # each Texinfo source.
2644 my $generic;
2645 my $makeinfoflags;
2646 my $sdir = dirname $source;
2647 if ($sdir eq '.' && dirname ($dest) eq '.')
2648 {
2649 $generic = 1;
2650 $makeinfoflags = '-I $(srcdir)';
2651 }
2652 else
2653 {
2654 $generic = 0;
2655 $makeinfoflags = "-I $sdir -I \$(srcdir)/$sdir";
2656 }
2658 # A directory can contain two kinds of info files: some built in the
2659 # source tree, and some built in the build tree. The rules are
2660 # different in each case. However we cannot output two different
2661 # set of generic rules. Because in-source builds are more usual, we
2662 # use generic rules in this case and fall back to "specific" rules
2663 # for build-dir builds. (It should not be a problem to invert this
2664 # if needed.)
2665 $generic = 0 unless $insrc;
2667 # We cannot use a suffix rule to build info files with an empty
2668 # extension. Otherwise we would output a single suffix inference
2669 # rule, with separate dependencies, as in
2670 #
2671 # .texi:
2672 # $(MAKEINFO) ...
2673 # foo.info: foo.texi
2674 #
2675 # which confuse Solaris make. (See the Autoconf manual for
2676 # details.) Therefore we use a specific rule in this case. This
2677 # applies to info files only (dvi and pdf files always have an
2678 # extension).
2679 my $generic_info = ($generic && $dsfx) ? 1 : 0;
2681 # If the resulting file lie into a subdirectory,
2682 # make sure this directory will exist.
2683 my $dirstamp = require_build_directory_maybe ($dest);
2685 my $dipfx = ($insrc ? '$(srcdir)/' : '') . $dpfx;
2687 $output_rules .= file_contents ('texibuild',
2688 new Automake::Location,
2689 DEPS => "@deps",
2690 DEST_PREFIX => $dpfx,
2691 DEST_INFO_PREFIX => $dipfx,
2692 DEST_SUFFIX => $dsfx,
2693 DIRSTAMP => $dirstamp,
2694 GENERIC => $generic,
2695 GENERIC_INFO => $generic_info,
2696 INSRC => $insrc,
2697 MAKEINFOFLAGS => $makeinfoflags,
2698 SOURCE => ($generic
2699 ? '$<' : $source),
2700 SOURCE_INFO => ($generic_info
2701 ? '$<' : $source),
2702 SOURCE_REAL => $source,
2703 SOURCE_SUFFIX => $ssfx,
2704 );
2705 return ($dirstamp, "$dpfx.dvi", "$dpfx.pdf", "$dpfx.ps", "$dpfx.html");
2706 }
2709 # $TEXICLEANS
2710 # handle_texinfo_helper ($info_texinfos)
2711 # --------------------------------------
2712 # Handle all Texinfo source; helper for handle_texinfo.
2713 sub handle_texinfo_helper ($)
2714 {
2715 my ($info_texinfos) = @_;
2716 my (@infobase, @info_deps_list, @texi_deps);
2717 my %versions;
2718 my $done = 0;
2719 my @texi_cleans;
2721 # Build a regex matching user-cleaned files.
2722 my $d = var 'DISTCLEANFILES';
2723 my $c = var 'CLEANFILES';
2724 my @f = ();
2725 push @f, $d->value_as_list_recursive (inner_expand => 1) if $d;
2726 push @f, $c->value_as_list_recursive (inner_expand => 1) if $c;
2727 @f = map { s|[^A-Za-z_0-9*\[\]\-]|\\$&|g; s|\*|[^/]*|g; $_; } @f;
2728 my $user_cleaned_files = '^(?:' . join ('|', @f) . ')$';
2730 foreach my $texi
2731 ($info_texinfos->value_as_list_recursive (inner_expand => 1))
2732 {
2733 my $infobase = $texi;
2734 $infobase =~ s/\.(txi|texinfo|texi)$//;
2736 if ($infobase eq $texi)
2737 {
2738 # FIXME: report line number.
2739 err_am "texinfo file `$texi' has unrecognized extension";
2740 next;
2741 }
2743 push @infobase, $infobase;
2745 # If 'version.texi' is referenced by input file, then include
2746 # automatic versioning capability.
2747 my ($out_file, $vtexi, @clean_files) =
2748 scan_texinfo_file ("$relative_dir/$texi")
2749 or next;
2750 push (@texi_cleans, @clean_files);
2752 # If the Texinfo source is in a subdirectory, create the
2753 # resulting info in this subdirectory. If it is in the current
2754 # directory, try hard to not prefix "./" because it breaks the
2755 # generic rules.
2756 my $outdir = dirname ($texi) . '/';
2757 $outdir = "" if $outdir eq './';
2758 $out_file = $outdir . $out_file;
2760 # Until Automake 1.6.3, .info files were built in the
2761 # source tree. This was an obstacle to the support of
2762 # non-distributed .info files, and non-distributed .texi
2763 # files.
2764 #
2765 # * Non-distributed .texi files is important in some packages
2766 # where .texi files are built at make time, probably using
2767 # other binaries built in the package itself, maybe using
2768 # tools or information found on the build host. Because
2769 # these files are not distributed they are always rebuilt
2770 # at make time; they should therefore not lie in the source
2771 # directory. One plan was to support this using
2772 # nodist_info_TEXINFOS or something similar. (Doing this
2773 # requires some sanity checks. For instance Automake should
2774 # not allow:
2775 # dist_info_TEXINFO = foo.texi
2776 # nodist_foo_TEXINFO = included.texi
2777 # because a distributed file should never depend on a
2778 # non-distributed file.)
2779 #
2780 # * If .texi files are not distributed, then .info files should
2781 # not be distributed either. There are also cases where one
2782 # want to distribute .texi files, but do not want to
2783 # distribute the .info files. For instance the Texinfo package
2784 # distributes the tool used to build these files; it would
2785 # be a waste of space to distribute them. It's not clear
2786 # which syntax we should use to indicate that .info files should
2787 # not be distributed. Akim Demaille suggested that eventually
2788 # we switch to a new syntax:
2789 # | Maybe we should take some inspiration from what's already
2790 # | done in the rest of Automake. Maybe there is too much
2791 # | syntactic sugar here, and you want
2792 # | nodist_INFO = bar.info
2793 # | dist_bar_info_SOURCES = bar.texi
2794 # | bar_texi_DEPENDENCIES = foo.texi
2795 # | with a bit of magic to have bar.info represent the whole
2796 # | bar*info set. That's a lot more verbose that the current
2797 # | situation, but it is # not new, hence the user has less
2798 # | to learn.
2799 # |
2800 # | But there is still too much room for meaningless specs:
2801 # | nodist_INFO = bar.info
2802 # | dist_bar_info_SOURCES = bar.texi
2803 # | dist_PS = bar.ps something-written-by-hand.ps
2804 # | nodist_bar_ps_SOURCES = bar.texi
2805 # | bar_texi_DEPENDENCIES = foo.texi
2806 # | here bar.texi is dist_ in line 2, and nodist_ in 4.
2807 #
2808 # Back to the point, it should be clear that in order to support
2809 # non-distributed .info files, we need to build them in the
2810 # build tree, not in the source tree (non-distributed .texi
2811 # files are less of a problem, because we do not output build
2812 # rules for them). In Automake 1.7 .info build rules have been
2813 # largely cleaned up so that .info files get always build in the
2814 # build tree, even when distributed. The idea was that
2815 # (1) if during a VPATH build the .info file was found to be
2816 # absent or out-of-date (in the source tree or in the
2817 # build tree), Make would rebuild it in the build tree.
2818 # If an up-to-date source-tree of the .info file existed,
2819 # make would not rebuild it in the build tree.
2820 # (2) having two copies of .info files, one in the source tree
2821 # and one (newer) in the build tree is not a problem
2822 # because `make dist' always pick files in the build tree
2823 # first.
2824 # However it turned out the be a bad idea for several reasons:
2825 # * Tru64, OpenBSD, and FreeBSD (not NetBSD) Make do behave
2826 # like GNU Make on point (1) above. These implementations
2827 # of Make would always rebuild .info files in the build
2828 # tree, even if such files were up to date in the source
2829 # tree. Consequently, it was impossible the perform a VPATH
2830 # build of a package containing Texinfo files using these
2831 # Make implementations.
2832 # (Refer to the Autoconf Manual, section "Limitation of
2833 # Make", paragraph "VPATH", item "target lookup", for
2834 # an account of the differences between these
2835 # implementations.)
2836 # * The GNU Coding Standards require these files to be built
2837 # in the source-tree (when they are distributed, that is).
2838 # * Keeping a fresher copy of distributed files in the
2839 # build tree can be annoying during development because
2840 # - if the files is kept under CVS, you really want it
2841 # to be updated in the source tree
2842 # - it os confusing that `make distclean' does not erase
2843 # all files in the build tree.
2844 #
2845 # Consequently, starting with Automake 1.8, .info files are
2846 # built in the source tree again. Because we still plan to
2847 # support non-distributed .info files at some point, we
2848 # have a single variable ($INSRC) that controls whether
2849 # the current .info file must be built in the source tree
2850 # or in the build tree. Actually this variable is switched
2851 # off for .info files that appear to be cleaned; this is
2852 # for backward compatibility with package such as Texinfo,
2853 # which do things like
2854 # info_TEXINFOS = texinfo.txi info-stnd.texi info.texi
2855 # DISTCLEANFILES = texinfo texinfo-* info*.info*
2856 # # Do not create info files for distribution.
2857 # dist-info:
2858 # in order not to distribute .info files.
2859 my $insrc = ($out_file =~ $user_cleaned_files) ? 0 : 1;
2861 my $soutdir = '$(srcdir)/' . $outdir;
2862 $outdir = $soutdir if $insrc;
2864 # If user specified file_TEXINFOS, then use that as explicit
2865 # dependency list.
2866 @texi_deps = ();
2867 push (@texi_deps, "$soutdir$vtexi") if $vtexi;
2869 my $canonical = canonicalize ($infobase);
2870 if (var ($canonical . "_TEXINFOS"))
2871 {
2872 push (@texi_deps, '$(' . $canonical . '_TEXINFOS)');
2873 push_dist_common ('$(' . $canonical . '_TEXINFOS)');
2874 }
2876 my ($dirstamp, @cfiles) =
2877 output_texinfo_build_rules ($texi, $out_file, $insrc, @texi_deps);
2878 push (@texi_cleans, @cfiles);
2880 push (@info_deps_list, $out_file);
2882 # If a vers*.texi file is needed, emit the rule.
2883 if ($vtexi)
2884 {
2885 err_am ("`$vtexi', included in `$texi', "
2886 . "also included in `$versions{$vtexi}'")
2887 if defined $versions{$vtexi};
2888 $versions{$vtexi} = $texi;
2890 # We number the stamp-vti files. This is doable since the
2891 # actual names don't matter much. We only number starting
2892 # with the second one, so that the common case looks nice.
2893 my $vti = ($done ? $done : 'vti');
2894 ++$done;
2896 # This is ugly, but it is our historical practice.
2897 if ($config_aux_dir_set_in_configure_in)
2898 {
2899 require_conf_file_with_macro (TRUE, 'info_TEXINFOS', FOREIGN,
2900 'mdate-sh');
2901 }
2902 else
2903 {
2904 require_file_with_macro (TRUE, 'info_TEXINFOS',
2905 FOREIGN, 'mdate-sh');
2906 }
2908 my $conf_dir;
2909 if ($config_aux_dir_set_in_configure_in)
2910 {
2911 $conf_dir = $config_aux_dir;
2912 $conf_dir .= '/' unless $conf_dir =~ /\/$/;
2913 }
2914 else
2915 {
2916 $conf_dir = '$(srcdir)/';
2917 }
2918 $output_rules .= file_contents ('texi-vers',
2919 new Automake::Location,
2920 TEXI => $texi,
2921 VTI => $vti,
2922 STAMPVTI => "${soutdir}stamp-$vti",
2923 VTEXI => "$soutdir$vtexi",
2924 MDDIR => $conf_dir,
2925 DIRSTAMP => $dirstamp);
2926 }
2927 }
2929 # Handle location of texinfo.tex.
2930 my $need_texi_file = 0;
2931 my $texinfodir;
2932 if (var ('TEXINFO_TEX'))
2933 {
2934 # The user defined TEXINFO_TEX so assume he knows what he is
2935 # doing.
2936 $texinfodir = ('$(srcdir)/'
2937 . dirname (variable_value ('TEXINFO_TEX')));
2938 }
2939 elsif (option 'cygnus')
2940 {
2941 $texinfodir = '$(top_srcdir)/../texinfo';
2942 define_variable ('TEXINFO_TEX', "$texinfodir/texinfo.tex", INTERNAL);
2943 }
2944 elsif ($config_aux_dir_set_in_configure_in)
2945 {
2946 $texinfodir = $config_aux_dir;
2947 define_variable ('TEXINFO_TEX', "$texinfodir/texinfo.tex", INTERNAL);
2948 $need_texi_file = 2; # so that we require_conf_file later
2949 }
2950 else
2951 {
2952 $texinfodir = '$(srcdir)';
2953 $need_texi_file = 1;
2954 }
2955 define_variable ('am__TEXINFO_TEX_DIR', $texinfodir, INTERNAL);
2957 push (@dist_targets, 'dist-info');
2959 if (! option 'no-installinfo')
2960 {
2961 # Make sure documentation is made and installed first. Use
2962 # $(INFO_DEPS), not 'info', because otherwise recursive makes
2963 # get run twice during "make all".
2964 unshift (@all, '$(INFO_DEPS)');
2965 }
2967 define_files_variable ("DVIS", @infobase, 'dvi', INTERNAL);
2968 define_files_variable ("PDFS", @infobase, 'pdf', INTERNAL);
2969 define_files_variable ("PSS", @infobase, 'ps', INTERNAL);
2970 define_files_variable ("HTMLS", @infobase, 'html', INTERNAL);
2972 # This next isn't strictly needed now -- the places that look here
2973 # could easily be changed to look in info_TEXINFOS. But this is
2974 # probably better, in case noinst_TEXINFOS is ever supported.
2975 define_variable ("TEXINFOS", variable_value ('info_TEXINFOS'), INTERNAL);
2977 # Do some error checking. Note that this file is not required
2978 # when in Cygnus mode; instead we defined TEXINFO_TEX explicitly
2979 # up above.
2980 if ($need_texi_file && ! option 'no-texinfo.tex')
2981 {
2982 if ($need_texi_file > 1)
2983 {
2984 require_conf_file_with_macro (TRUE, 'info_TEXINFOS', FOREIGN,
2985 'texinfo.tex');
2986 }
2987 else
2988 {
2989 require_file_with_macro (TRUE, 'info_TEXINFOS', FOREIGN,
2990 'texinfo.tex');
2991 }
2992 }
2994 return makefile_wrap ("", "\t ", @texi_cleans);
2995 }
2998 # handle_texinfo ()
2999 # -----------------
3000 # Handle all Texinfo source.
3001 sub handle_texinfo ()
3002 {
3003 reject_var 'TEXINFOS', "`TEXINFOS' is an anachronism; use `info_TEXINFOS'";
3004 # FIXME: I think this is an obsolete future feature name.
3005 reject_var 'html_TEXINFOS', "HTML generation not yet supported";
3007 my $info_texinfos = var ('info_TEXINFOS');
3008 my $texiclean = "";
3009 if ($info_texinfos)
3010 {
3011 $texiclean = handle_texinfo_helper ($info_texinfos);
3012 }
3013 $output_rules .= file_contents ('texinfos',
3014 new Automake::Location,
3015 TEXICLEAN => $texiclean,
3016 'LOCAL-TEXIS' => !!$info_texinfos);
3017 }
3020 # Handle any man pages.
3021 sub handle_man_pages
3022 {
3023 reject_var 'MANS', "`MANS' is an anachronism; use `man_MANS'";
3025 # Find all the sections in use. We do this by first looking for
3026 # "standard" sections, and then looking for any additional
3027 # sections used in man_MANS.
3028 my (%sections, %vlist);
3029 # We handle nodist_ for uniformity. man pages aren't distributed
3030 # by default so it isn't actually very important.
3031 foreach my $pfx ('', 'dist_', 'nodist_')
3032 {
3033 # Add more sections as needed.
3034 foreach my $section ('0'..'9', 'n', 'l')
3035 {
3036 my $varname = $pfx . 'man' . $section . '_MANS';
3037 if (var ($varname))
3038 {
3039 $sections{$section} = 1;
3040 $varname = '$(' . $varname . ')';
3041 $vlist{$varname} = 1;
3043 &push_dist_common ($varname)
3044 if $pfx eq 'dist_';
3045 }
3046 }
3048 my $varname = $pfx . 'man_MANS';
3049 my $var = var ($varname);
3050 if ($var)
3051 {
3052 foreach ($var->value_as_list_recursive)
3053 {
3054 # A page like `foo.1c' goes into man1dir.
3055 if (/\.([0-9a-z])([a-z]*)$/)
3056 {
3057 $sections{$1} = 1;
3058 }
3059 }
3061 $varname = '$(' . $varname . ')';
3062 $vlist{$varname} = 1;
3063 &push_dist_common ($varname)
3064 if $pfx eq 'dist_';
3065 }
3066 }
3068 return unless %sections;
3070 # Now for each section, generate an install and uninstall rule.
3071 # Sort sections so output is deterministic.
3072 foreach my $section (sort keys %sections)
3073 {
3074 $output_rules .= &file_contents ('mans',
3075 new Automake::Location,
3076 SECTION => $section);
3077 }
3079 my @mans = sort keys %vlist;
3080 $output_vars .= file_contents ('mans-vars',
3081 new Automake::Location,
3082 MANS => "@mans");
3084 push (@all, '$(MANS)')
3085 unless option 'no-installman';
3086 }
3088 # Handle DATA variables.
3089 sub handle_data
3090 {
3091 &am_install_var ('-noextra', '-candist', 'data', 'DATA',
3092 'data', 'sysconf', 'sharedstate', 'localstate',
3093 'pkgdata', 'lisp', 'noinst', 'check');
3094 }
3096 # Handle TAGS.
3097 sub handle_tags
3098 {
3099 my @tag_deps = ();
3100 my @ctag_deps = ();
3101 if (var ('SUBDIRS'))
3102 {
3103 $output_rules .= ("tags-recursive:\n"
3104 . "\tlist=\'\$(SUBDIRS)\'; for subdir in \$\$list; do \\\n"
3105 # Never fail here if a subdir fails; it
3106 # isn't important.
3107 . "\t test \"\$\$subdir\" = . || (cd \$\$subdir"
3108 . " && \$(MAKE) \$(AM_MAKEFLAGS) tags); \\\n"
3109 . "\tdone\n");
3110 push (@tag_deps, 'tags-recursive');
3111 &depend ('.PHONY', 'tags-recursive');
3113 $output_rules .= ("ctags-recursive:\n"
3114 . "\tlist=\'\$(SUBDIRS)\'; for subdir in \$\$list; do \\\n"
3115 # Never fail here if a subdir fails; it
3116 # isn't important.
3117 . "\t test \"\$\$subdir\" = . || (cd \$\$subdir"
3118 . " && \$(MAKE) \$(AM_MAKEFLAGS) ctags); \\\n"
3119 . "\tdone\n");
3120 push (@ctag_deps, 'ctags-recursive');
3121 &depend ('.PHONY', 'ctags-recursive');
3122 }
3124 if (&saw_sources_p (1)
3125 || var ('ETAGS_ARGS')
3126 || @tag_deps)
3127 {
3128 my @config;
3129 foreach my $spec (@config_headers)
3130 {
3131 my ($out, @ins) = split_config_file_spec ($spec);
3132 foreach my $in (@ins)
3133 {
3134 # If the config header source is in this directory,
3135 # require it.
3136 push @config, basename ($in)
3137 if $relative_dir eq dirname ($in);
3138 }
3139 }
3140 $output_rules .= &file_contents ('tags',
3141 new Automake::Location,
3142 CONFIG => "@config",
3143 TAGSDIRS => "@tag_deps",
3144 CTAGSDIRS => "@ctag_deps");
3146 set_seen 'TAGS_DEPENDENCIES';
3147 }
3148 elsif (reject_var ('TAGS_DEPENDENCIES',
3149 "doesn't make sense to define `TAGS_DEPENDENCIES'"
3150 . "without\nsources or `ETAGS_ARGS'"))
3151 {
3152 }
3153 else
3154 {
3155 # Every Makefile must define some sort of TAGS rule.
3156 # Otherwise, it would be possible for a top-level "make TAGS"
3157 # to fail because some subdirectory failed.
3158 $output_rules .= "tags: TAGS\nTAGS:\n\n";
3159 # Ditto ctags.
3160 $output_rules .= "ctags: CTAGS\nCTAGS:\n\n";
3161 }
3162 }
3164 # Handle multilib support.
3165 sub handle_multilib
3166 {
3167 if ($seen_multilib && $relative_dir eq '.')
3168 {
3169 $output_rules .= &file_contents ('multilib', new Automake::Location);
3170 push (@all, 'all-multi');
3171 }
3172 }
3175 # $BOOLEAN
3176 # &for_dist_common ($A, $B)
3177 # -------------------------
3178 # Subroutine for &handle_dist: sort files to dist.
3179 #
3180 # We put README first because it then becomes easier to make a
3181 # Usenet-compliant shar file (in these, README must be first).
3182 #
3183 # FIXME: do more ordering of files here.
3184 sub for_dist_common
3185 {
3186 return 0
3187 if $a eq $b;
3188 return -1
3189 if $a eq 'README';
3190 return 1
3191 if $b eq 'README';
3192 return $a cmp $b;
3193 }
3196 # handle_dist
3197 # -----------
3198 # Handle 'dist' target.
3199 sub handle_dist ()
3200 {
3201 return if option 'no-dist';
3203 # At least one of the archive formats must be enabled.
3204 if ($relative_dir eq '.')
3205 {
3206 my $archive_defined = option 'no-dist-gzip' ? 0 : 1;
3207 $archive_defined ||=
3208 grep { option "dist-$_" } ('shar', 'zip', 'tarZ', 'bzip2');
3209 error (option 'no-dist-gzip',
3210 "no-dist-gzip specified but no dist-* specified, "
3211 . "at least one archive format must be enabled")
3212 unless $archive_defined;
3213 }
3215 # Look for common files that should be included in distribution.
3216 # If the aux dir is set, and it does not have a Makefile.am, then
3217 # we check for these files there as well.
3218 my $check_aux = 0;
3219 my $auxdir = '';
3220 if ($relative_dir eq '.'
3221 && $config_aux_dir_set_in_configure_in)
3222 {
3223 ($auxdir = $config_aux_dir) =~ s,^\$\(top_srcdir\)/,,;
3224 if (! &is_make_dir ($auxdir))
3225 {
3226 $check_aux = 1;
3227 }
3228 }
3229 foreach my $cfile (@common_files)
3230 {
3231 if (-f ($relative_dir . "/" . $cfile)
3232 # The file might be absent, but if it can be built it's ok.
3233 || rule $cfile)
3234 {
3235 &push_dist_common ($cfile);
3236 }
3238 # Don't use `elsif' here because a file might meaningfully
3239 # appear in both directories.
3240 if ($check_aux && -f ($auxdir . '/' . $cfile))
3241 {
3242 &push_dist_common ($auxdir . '/' . $cfile);
3243 }
3244 }
3246 # We might copy elements from $configure_dist_common to
3247 # %dist_common if we think we need to. If the file appears in our
3248 # directory, we would have discovered it already, so we don't
3249 # check that. But if the file is in a subdir without a Makefile,
3250 # we want to distribute it here if we are doing `.'. Ugly!
3251 if ($relative_dir eq '.')
3252 {
3253 foreach my $file (split (' ' , $configure_dist_common))
3254 {
3255 push_dist_common ($file)
3256 unless is_make_dir (dirname ($file));
3257 }
3258 }
3260 # Files to distributed. Don't use ->value_as_list_recursive
3261 # as it recursively expands `$(dist_pkgdata_DATA)' etc.
3262 my @dist_common = split (' ', rvar ('DIST_COMMON')->variable_value);
3263 @dist_common = uniq (sort for_dist_common (@dist_common));
3264 variable_delete 'DIST_COMMON';
3265 define_pretty_variable ('DIST_COMMON', TRUE, INTERNAL, @dist_common);
3267 # Now that we've processed DIST_COMMON, disallow further attempts
3268 # to set it.
3269 $handle_dist_run = 1;
3271 # Scan EXTRA_DIST to see if we need to distribute anything from a
3272 # subdir. If so, add it to the list. I didn't want to do this
3273 # originally, but there were so many requests that I finally
3274 # relented.
3275 my $extra_dist = var ('EXTRA_DIST');
3276 if ($extra_dist)
3277 {
3278 # FIXME: This should be fixed to work with conditions. That
3279 # will require only making the entries in %dist_dirs under the
3280 # appropriate condition. This is meaningful if the nature of
3281 # the distribution should depend upon the configure options
3282 # used.
3283 foreach ($extra_dist->value_as_list_recursive)
3284 {
3285 next if /^\@.*\@$/;
3286 next unless s,/+[^/]+$,,;
3287 $dist_dirs{$_} = 1
3288 unless $_ eq '.';
3289 }
3290 }
3292 # We have to check DIST_COMMON for extra directories in case the
3293 # user put a source used in AC_OUTPUT into a subdir.
3294 my $topsrcdir = backname ($relative_dir);
3295 foreach (rvar ('DIST_COMMON')->value_as_list_recursive)
3296 {
3297 next if /^\@.*\@$/;
3298 s/\$\(top_srcdir\)/$topsrcdir/;
3299 s/\$\(srcdir\)/./;
3300 # Strip any leading `./'.
3301 s,^(:?\./+)*,,;
3302 next unless s,/+[^/]+$,,;
3303 $dist_dirs{$_} = 1
3304 unless $_ eq '.';
3305 }
3307 # Rule to check whether a distribution is viable.
3308 my %transform = ('DISTCHECK-HOOK' => !! rule 'distcheck-hook',
3309 'GETTEXT' => $seen_gettext && !$seen_gettext_external);
3311 # Prepend $(distdir) to each directory given.
3312 my %rewritten = map { '$(distdir)/' . "$_" => 1 } keys %dist_dirs;
3313 $transform{'DISTDIRS'} = join (' ', sort keys %rewritten);
3315 # If we have SUBDIRS, create all dist subdirectories and do
3316 # recursive build.
3317 my $subdirs = var ('SUBDIRS');
3318 if ($subdirs)
3319 {
3320 # If SUBDIRS is conditionally defined, then set DIST_SUBDIRS
3321 # to all possible directories, and use it. If DIST_SUBDIRS is
3322 # defined, just use it.
3323 my $dist_subdir_name;
3324 # Note that we check DIST_SUBDIRS first on purpose, so that
3325 # we don't call has_conditional_contents for now reason.
3326 # (In the past one project used so many conditional subdirectories
3327 # that calling has_conditional_contents on SUBDIRS caused
3328 # automake to grow to 150Mb -- this should not happen with
3329 # the current implementation of has_conditional_contents,
3330 # but it's more efficient to avoid the call anyway.)
3331 if (var ('DIST_SUBDIRS'))
3332 {
3333 $dist_subdir_name = 'DIST_SUBDIRS';
3334 }
3335 elsif ($subdirs->has_conditional_contents)
3336 {
3337 $dist_subdir_name = 'DIST_SUBDIRS';
3338 define_pretty_variable
3339 ('DIST_SUBDIRS', TRUE, INTERNAL,
3340 uniq ($subdirs->value_as_list_recursive));
3341 }
3342 else
3343 {
3344 $dist_subdir_name = 'SUBDIRS';
3345 # We always define this because that is what `distclean'
3346 # wants.
3347 define_pretty_variable ('DIST_SUBDIRS', TRUE, INTERNAL,
3348 '$(SUBDIRS)');
3349 }
3351 $transform{'DIST_SUBDIR_NAME'} = $dist_subdir_name;
3352 }
3354 # If the target `dist-hook' exists, make sure it is run. This
3355 # allows users to do random weird things to the distribution
3356 # before it is packaged up.
3357 push (@dist_targets, 'dist-hook')
3358 if rule 'dist-hook';
3359 $transform{'DIST-TARGETS'} = join(' ', @dist_targets);
3361 $output_rules .= &file_contents ('distdir',
3362 new Automake::Location,
3363 %transform);
3364 }
3367 # &handle_subdirs ()
3368 # ------------------
3369 # Handle subdirectories.
3370 sub handle_subdirs ()
3371 {
3372 my $subdirs = var ('SUBDIRS');
3373 return
3374 unless $subdirs;
3376 my @subdirs = $subdirs->value_as_list_recursive;
3377 my @dsubdirs = ();
3378 my $dsubdirs = var ('DIST_SUBDIRS');
3379 @dsubdirs = $dsubdirs->value_as_list_recursive
3380 if $dsubdirs;
3382 # If an `obj/' directory exists, BSD make will enter it before
3383 # reading `Makefile'. Hence the `Makefile' in the current directory
3384 # will not be read.
3385 #
3386 # % cat Makefile
3387 # all:
3388 # echo Hello
3389 # % cat obj/Makefile
3390 # all:
3391 # echo World
3392 # % make # GNU make
3393 # echo Hello
3394 # Hello
3395 # % pmake # BSD make
3396 # echo World
3397 # World
3398 msg_var ('portability', 'SUBDIRS',
3399 "naming a subdirectory `obj' causes troubles with BSD make")
3400 if grep ($_ eq 'obj', @subdirs);
3401 msg_var ('portability', 'DIST_SUBDIRS',
3402 "naming a subdirectory `obj' causes troubles with BSD make")
3403 if grep ($_ eq 'obj', @dsubdirs);
3405 # Make sure each directory mentioned in SUBDIRS actually exists.
3406 foreach my $dir (@subdirs)
3407 {
3408 # Skip directories substituted by configure.
3409 next if $dir =~ /^\@.*\@$/;
3411 if (! -d $relative_dir . '/' . $dir)
3412 {
3413 err_var ('SUBDIRS', "required directory $relative_dir/$dir "
3414 . "does not exist");
3415 next;
3416 }
3418 err_var 'SUBDIRS', "directory should not contain `/'"
3419 if $dir =~ /\//;
3420 }
3422 $output_rules .= &file_contents ('subdirs', new Automake::Location);
3423 rvar ('RECURSIVE_TARGETS')->rdef (TRUE)->{'pretty'} = VAR_SORTED; # Gross!
3424 }
3427 # ($REGEN, @DEPENDENCIES)
3428 # &scan_aclocal_m4
3429 # ----------------
3430 # If aclocal.m4 creation is automated, return the list of its dependencies.
3431 sub scan_aclocal_m4 ()
3432 {
3433 my $regen_aclocal = 0;
3435 set_seen 'CONFIG_STATUS_DEPENDENCIES';
3436 set_seen 'CONFIGURE_DEPENDENCIES';
3438 if (-f 'aclocal.m4')
3439 {
3440 &define_variable ("ACLOCAL_M4", '$(top_srcdir)/aclocal.m4', INTERNAL);
3442 my $aclocal = new Automake::XFile "< aclocal.m4";
3443 my $line = $aclocal->getline;
3444 $regen_aclocal = $line =~ 'generated automatically by aclocal';
3445 }
3447 my @ac_deps = ();
3449 if (set_seen ('ACLOCAL_M4_SOURCES'))
3450 {
3451 push (@ac_deps, '$(ACLOCAL_M4_SOURCES)');
3452 msg_var ('obsolete', 'ACLOCAL_M4_SOURCES',
3453 "`ACLOCAL_M4_SOURCES' is obsolete.\n"
3454 . "It should be safe to simply remove it.");
3455 }
3457 # Note that it might be possible that aclocal.m4 doesn't exist but
3458 # should be auto-generated. This case probably isn't very
3459 # important.
3461 return ($regen_aclocal, @ac_deps);
3462 }
3465 # @DEPENDENCIES
3466 # &prepend_srcdir (@INPUTS)
3467 # -------------------------
3468 # Prepend $(srcdir) or $(top_srcdir) to all @INPUTS. The idea is that
3469 # if an input file has a directory part the same as the current
3470 # directory, then the directory part is simply replaced by $(srcdir).
3471 # But if the directory part is different, then $(top_srcdir) is
3472 # prepended.
3473 sub prepend_srcdir (@)
3474 {
3475 my (@inputs) = @_;
3476 my @newinputs;
3478 foreach my $single (@inputs)
3479 {
3480 if (dirname ($single) eq $relative_dir)
3481 {
3482 push (@newinputs, '$(srcdir)/' . basename ($single));
3483 }
3484 else
3485 {
3486 push (@newinputs, '$(top_srcdir)/' . $single);
3487 }
3488 }
3489 return @newinputs;
3490 }
3492 # @DEPENDENCIES
3493 # rewrite_inputs_into_dependencies ($OUTPUT, @INPUTS)
3494 # ---------------------------------------------------
3495 # Compute a list of dependencies appropriate for the rebuild
3496 # rule of
3497 # AC_CONFIG_FILES($OUTPUT:$INPUT[0]:$INPUTS[1]:...)
3498 # Also distribute $INPUTs which are not build by another AC_CONFIG_FILES.
3499 sub rewrite_inputs_into_dependencies ($@)
3500 {
3501 my ($file, @inputs) = @_;
3502 my @res = ();
3504 for my $i (@inputs)
3505 {
3506 if (exists $ac_config_files_location{$i})
3507 {
3508 my $di = dirname $i;
3509 if ($di eq $relative_dir)
3510 {
3511 $i = basename $i;
3512 }
3513 # In the top-level Makefile we do not use $(top_builddir), because
3514 # we are already there, and since the targets are built without
3515 # a $(top_builddir), it helps BSD Make to match them with
3516 # dependencies.
3517 elsif ($relative_dir ne '.')
3518 {
3519 $i = '$(top_builddir)/' . $i;
3520 }
3521 }
3522 else
3523 {
3524 msg ('error', $ac_config_files_location{$file},
3525 "required file `$i' not found")
3526 unless exists $output_files{$i} || -f $i;
3527 ($i) = prepend_srcdir ($i);
3528 push_dist_common ($i);
3529 }
3530 push @res, $i;
3531 }
3532 return @res;
3533 }
3537 # &handle_configure ($MAKEFILE_AM, $MAKEFILE_IN, $MAKEFILE, @INPUTS)
3538 # ------------------------------------------------------------------
3539 # Handle remaking and configure stuff.
3540 # We need the name of the input file, to do proper remaking rules.
3541 sub handle_configure ($$$@)
3542 {
3543 my ($makefile_am, $makefile_in, $makefile, @inputs) = @_;
3545 prog_error 'empty @inputs'
3546 unless @inputs;
3548 my ($rel_makefile_am, $rel_makefile_in) = prepend_srcdir ($makefile_am,
3549 $makefile_in);
3550 my $rel_makefile = basename $makefile;
3552 my $colon_infile = ':' . join (':', @inputs);
3553 $colon_infile = '' if $colon_infile eq ":$makefile.in";
3554 my @rewritten = rewrite_inputs_into_dependencies ($makefile, @inputs);
3555 my ($regen_aclocal_m4, @aclocal_m4_deps) = scan_aclocal_m4;
3556 define_pretty_variable ('am__aclocal_m4_deps', TRUE, INTERNAL,
3557 @configure_deps, @aclocal_m4_deps,
3558 '$(top_srcdir)/' . $configure_ac);
3559 my @configuredeps = ('$(am__aclocal_m4_deps)', '$(CONFIGURE_DEPENDENCIES)');
3560 push @configuredeps, '$(ACLOCAL_M4)' if -f 'aclocal.m4';
3561 define_pretty_variable ('am__configure_deps', TRUE, INTERNAL,
3562 @configuredeps);
3564 $output_rules .= file_contents
3565 ('configure',
3566 new Automake::Location,
3567 MAKEFILE => $rel_makefile,
3568 'MAKEFILE-DEPS' => "@rewritten",
3569 'CONFIG-MAKEFILE' => ($relative_dir eq '.') ? '$@' : '$(subdir)/$@',
3570 'MAKEFILE-IN' => $rel_makefile_in,
3571 'MAKEFILE-IN-DEPS' => "@include_stack",
3572 'MAKEFILE-AM' => $rel_makefile_am,
3573 STRICTNESS => global_option 'cygnus'
3574 ? 'cygnus' : $strictness_name,
3575 'USE-DEPS' => global_option 'no-dependencies'
3576 ? ' --ignore-deps' : '',
3577 'MAKEFILE-AM-SOURCES' => "$makefile$colon_infile",
3578 'REGEN-ACLOCAL-M4' => $regen_aclocal_m4);
3580 if ($relative_dir eq '.')
3581 {
3582 &push_dist_common ('acconfig.h')
3583 if -f 'acconfig.h';
3584 }
3586 # If we have a configure header, require it.
3587 my $hdr_index = 0;
3588 my @distclean_config;
3589 foreach my $spec (@config_headers)
3590 {
3591 $hdr_index += 1;
3592 # $CONFIG_H_PATH: config.h from top level.
3593 my ($config_h_path, @ins) = split_config_file_spec ($spec);
3594 my $config_h_dir = dirname ($config_h_path);
3596 # If the header is in the current directory we want to build
3597 # the header here. Otherwise, if we're at the topmost
3598 # directory and the header's directory doesn't have a
3599 # Makefile, then we also want to build the header.
3600 if ($relative_dir eq $config_h_dir
3601 || ($relative_dir eq '.' && ! &is_make_dir ($config_h_dir)))
3602 {
3603 my ($cn_sans_dir, $stamp_dir);
3604 if ($relative_dir eq $config_h_dir)
3605 {
3606 $cn_sans_dir = basename ($config_h_path);
3607 $stamp_dir = '';
3608 }
3609 else
3610 {
3611 $cn_sans_dir = $config_h_path;
3612 if ($config_h_dir eq '.')
3613 {
3614 $stamp_dir = '';
3615 }
3616 else
3617 {
3618 $stamp_dir = $config_h_dir . '/';
3619 }
3620 }
3622 # This will also distribute all inputs.
3623 @ins = rewrite_inputs_into_dependencies ($config_h_path, @ins);
3625 # Header defined and in this directory.
3626 my @files;
3627 if (-f $config_h_path . '.top')
3628 {
3629 push (@files, "$cn_sans_dir.top");
3630 }
3631 if (-f $config_h_path . '.bot')
3632 {
3633 push (@files, "$cn_sans_dir.bot");
3634 }
3636 push_dist_common (@files);
3638 # For now, acconfig.h can only appear in the top srcdir.
3639 if (-f 'acconfig.h')
3640 {
3641 push (@files, '$(top_srcdir)/acconfig.h');
3642 }
3644 my $stamp = "${stamp_dir}stamp-h${hdr_index}";
3645 $output_rules .=
3646 file_contents ('remake-hdr',
3647 new Automake::Location,
3648 FILES => "@files",
3649 CONFIG_H => $cn_sans_dir,
3650 CONFIG_HIN => $ins[0],
3651 CONFIG_H_DEPS => "@ins",
3652 CONFIG_H_PATH => $config_h_path,
3653 FIRST_CONFIG_HIN => ($hdr_index == 1),
3654 STAMP => "$stamp");
3656 push @distclean_config, $cn_sans_dir, $stamp;
3657 }
3658 }
3660 $output_rules .= file_contents ('clean-hdr',
3661 new Automake::Location,
3662 FILES => "@distclean_config")
3663 if @distclean_config;
3665 # Distribute and define mkinstalldirs only if it is already present
3666 # in the package, for backward compatibility (some people my still
3667 # use $(mkinstalldirs)).
3668 my $mkidpath = $config_aux_path[0] . '/mkinstalldirs';
3669 if (-f $mkidpath)
3670 {
3671 # Use require_file so that any existingscript gets updated
3672 # by --force-missing.
3673 require_conf_file ($mkidpath, FOREIGN, 'mkinstalldirs');
3674 define_variable ('mkinstalldirs',
3675 "\$(SHELL) $config_aux_dir/mkinstalldirs", INTERNAL);
3676 }
3677 else
3678 {
3679 define_variable ('mkinstalldirs', '$(mkdir_p)', INTERNAL);
3680 }
3682 reject_var ('CONFIG_HEADER',
3683 "`CONFIG_HEADER' is an anachronism; now determined "
3684 . "automatically\nfrom `$configure_ac'");
3686 my @config_h;
3687 foreach my $spec (@config_headers)
3688 {
3689 my ($out, @ins) = split_config_file_spec ($spec);
3690 # Generate CONFIG_HEADER define.
3691 if ($relative_dir eq dirname ($out))
3692 {
3693 push @config_h, basename ($out);
3694 }
3695 else
3696 {
3697 push @config_h, "\$(top_builddir)/$out";
3698 }
3699 }
3700 define_variable ("CONFIG_HEADER", "@config_h", INTERNAL)
3701 if @config_h;
3703 # Now look for other files in this directory which must be remade
3704 # by config.status, and generate rules for them.
3705 my @actual_other_files = ();
3706 foreach my $lfile (@other_input_files)
3707 {
3708 my $file;
3709 my @inputs;
3710 if ($lfile =~ /^([^:]*):(.*)$/)
3711 {
3712 # This is the ":" syntax of AC_OUTPUT.
3713 $file = $1;
3714 @inputs = split (':', $2);
3715 }
3716 else
3717 {
3718 # Normal usage.
3719 $file = $lfile;
3720 @inputs = $file . '.in';
3721 }
3723 # Automake files should not be stored in here, but in %MAKE_LIST.
3724 prog_error ("$lfile in \@other_input_files\n"
3725 . "\@other_input_files = (@other_input_files)")
3726 if -f $file . '.am';
3728 my $local = basename ($file);
3730 # Make sure the dist directory for each input file is created.
3731 # We only have to do this at the topmost level though. This
3732 # is a bit ugly but it easier than spreading out the logic,
3733 # especially in cases like AC_OUTPUT(foo/out:bar/in), where
3734 # there is no Makefile in bar/.
3735 if ($relative_dir eq '.')
3736 {
3737 foreach (@inputs)
3738 {
3739 $dist_dirs{dirname ($_)} = 1;
3740 }
3741 }
3743 # We skip files that aren't in this directory. However, if
3744 # the file's directory does not have a Makefile, and we are
3745 # currently doing `.', then we create a rule to rebuild the
3746 # file in the subdir.
3747 my $fd = dirname ($file);
3748 if ($fd ne $relative_dir)
3749 {
3750 if ($relative_dir eq '.' && ! &is_make_dir ($fd))
3751 {
3752 $local = $file;
3753 }
3754 else
3755 {
3756 next;
3757 }
3758 }
3760 my @rewritten_inputs = rewrite_inputs_into_dependencies ($file, @inputs);
3762 $output_rules .= ($local . ': '
3763 . '$(top_builddir)/config.status '
3764 . "@rewritten_inputs\n"
3765 . "\t"
3766 . 'cd $(top_builddir) && '
3767 . '$(SHELL) ./config.status '
3768 . ($relative_dir eq '.' ? '' : '$(subdir)/')
3769 . '$@'
3770 . "\n");
3771 push (@actual_other_files, $local);
3772 }
3774 # For links we should clean destinations and distribute sources.
3775 foreach my $spec (@config_links)
3776 {
3777 my ($link, $file) = split /:/, $spec;
3778 # Some people do AC_CONFIG_LINKS($computed). We only handle
3779 # the DEST:SRC form.
3780 next unless $file;
3781 my $where = $ac_config_files_location{$link};
3783 # Skip destinations that contain shell variables.
3784 if ($link !~ /\$/)
3785 {
3786 # We skip links that aren't in this directory. However, if
3787 # the link's directory does not have a Makefile, and we are
3788 # currently doing `.', then we add the link to CONFIG_CLEAN_FILES
3789 # in `.'s Makefile.in.
3790 my $local = basename ($link);
3791 my $fd = dirname ($link);
3792 if ($fd ne $relative_dir)
3793 {
3794 if ($relative_dir eq '.' && ! &is_make_dir ($fd))
3795 {
3796 $local = $link;
3797 }
3798 else
3799 {
3800 $local = undef;
3801 }
3802 }
3803 push @actual_other_files, $local if $local;
3804 }
3806 # Do not process sources that contain shell variables.
3807 if ($file !~ /\$/)
3808 {
3809 my $fd = dirname ($file);
3811 # Make sure the dist directory for each input file is created.
3812 # We only have to do this at the topmost level though.
3813 if ($relative_dir eq '.')
3814 {
3815 $dist_dirs{$fd} = 1;
3816 }
3818 # We distribute files that are in this directory.
3819 # At the top-level (`.') we also distribute files whose
3820 # directory does not have a Makefile.
3821 if (($fd eq $relative_dir)
3822 || ($relative_dir eq '.' && ! &is_make_dir ($fd)))
3823 {
3824 # The following will distribute $file as a side-effect when
3825 # it is appropriate (i.e., when $file is not already an output).
3826 # We do not need the result, just the side-effect.
3827 rewrite_inputs_into_dependencies ($link, $file);
3828 }
3829 }
3830 }
3832 # These files get removed by "make distclean".
3833 define_pretty_variable ('CONFIG_CLEAN_FILES', TRUE, INTERNAL,
3834 @actual_other_files);
3835 }
3837 # Handle C headers.
3838 sub handle_headers
3839 {
3840 my @r = &am_install_var ('-defaultdist', 'header', 'HEADERS', 'include',
3841 'oldinclude', 'pkginclude',
3842 'noinst', 'check');
3843 foreach (@r)
3844 {
3845 next unless $_->[1] =~ /\..*$/;
3846 &saw_extension ($&);
3847 }
3848 }
3850 sub handle_gettext
3851 {
3852 return if ! $seen_gettext || $relative_dir ne '.';
3854 my $subdirs = var 'SUBDIRS';
3856 if (! $subdirs)
3857 {
3858 err_ac "AM_GNU_GETTEXT used but SUBDIRS not defined";
3859 return;
3860 }
3862 # Perform some sanity checks to help users get the right setup.
3863 # We disable these tests when po/ doesn't exist in order not to disallow
3864 # unusual gettext setups.
3865 #
3866 # Bruno Haible:
3867 # | The idea is:
3868 # |
3869 # | 1) If a package doesn't have a directory po/ at top level, it
3870 # | will likely have multiple po/ directories in subpackages.
3871 # |
3872 # | 2) It is useful to warn for the absence of intl/ if AM_GNU_GETTEXT
3873 # | is used without 'external'. It is also useful to warn for the
3874 # | presence of intl/ if AM_GNU_GETTEXT([external]) is used. Both
3875 # | warnings apply only to the usual layout of packages, therefore
3876 # | they should both be disabled if no po/ directory is found at
3877 # | top level.
3879 if (-d 'po')
3880 {
3881 my @subdirs = $subdirs->value_as_list_recursive;
3883 msg_var ('syntax', $subdirs,
3884 "AM_GNU_GETTEXT used but `po' not in SUBDIRS")
3885 if ! grep ($_ eq 'po', @subdirs);
3887 # intl/ is not required when AM_GNU_GETTEXT is called with
3888 # the `external' option.
3889 msg_var ('syntax', $subdirs,
3890 "AM_GNU_GETTEXT used but `intl' not in SUBDIRS")
3891 if (! $seen_gettext_external
3892 && ! grep ($_ eq 'intl', @subdirs));
3894 # intl/ should not be used with AM_GNU_GETTEXT([external])
3895 msg_var ('syntax', $subdirs,
3896 "`intl' should not be in SUBDIRS when "
3897 . "AM_GNU_GETTEXT([external]) is used")
3898 if ($seen_gettext_external && grep ($_ eq 'intl', @subdirs));
3899 }
3901 require_file ($ac_gettext_location, GNU, 'ABOUT-NLS');
3902 }
3904 # Handle footer elements.
3905 sub handle_footer
3906 {
3907 # NOTE don't use define_pretty_variable here, because
3908 # $contents{...} is already defined.
3909 $output_vars .= 'SOURCES = ' . variable_value ('SOURCES') . "\n\n"
3910 if variable_value ('SOURCES');
3912 reject_rule ('.SUFFIXES',
3913 "use variable `SUFFIXES', not target `.SUFFIXES'");
3915 # Note: AIX 4.1 /bin/make will fail if any suffix rule appears
3916 # before .SUFFIXES. So we make sure that .SUFFIXES appears before
3917 # anything else, by sticking it right after the default: target.
3918 $output_header .= ".SUFFIXES:\n";
3919 my $suffixes = var 'SUFFIXES';
3920 my @suffixes = Automake::Rule::suffixes;
3921 if (@suffixes || $suffixes)
3922 {
3923 # Make sure SUFFIXES has unique elements. Sort them to ensure
3924 # the output remains consistent. However, $(SUFFIXES) is
3925 # always at the start of the list, unsorted. This is done
3926 # because make will choose rules depending on the ordering of
3927 # suffixes, and this lets the user have some control. Push
3928 # actual suffixes, and not $(SUFFIXES). Some versions of make
3929 # do not like variable substitutions on the .SUFFIXES line.
3930 my @user_suffixes = ($suffixes
3931 ? $suffixes->value_as_list_recursive : ());
3933 my %suffixes = map { $_ => 1 } @suffixes;
3934 delete @suffixes{@user_suffixes};
3936 $output_header .= (".SUFFIXES: "
3937 . join (' ', @user_suffixes, sort keys %suffixes)
3938 . "\n");
3939 }
3941 $output_trailer .= file_contents ('footer', new Automake::Location);
3942 }
3945 # Generate `make install' rules.
3946 sub handle_install ()
3947 {
3948 $output_rules .= &file_contents
3949 ('install',
3950 new Automake::Location,
3951 maybe_BUILT_SOURCES => (set_seen ('BUILT_SOURCES')
3952 ? (" \$(BUILT_SOURCES)\n"
3953 . "\t\$(MAKE) \$(AM_MAKEFLAGS)")
3954 : ''),
3955 'installdirs-local' => (rule 'installdirs-local'
3956 ? ' installdirs-local' : ''),
3957 am__installdirs => variable_value ('am__installdirs') || '');
3958 }
3961 # Deal with all and all-am.
3962 sub handle_all ($)
3963 {
3964 my ($makefile) = @_;
3966 # Output `all-am'.
3968 # Put this at the beginning for the sake of non-GNU makes. This
3969 # is still wrong if these makes can run parallel jobs. But it is
3970 # right enough.
3971 unshift (@all, basename ($makefile));
3973 foreach my $spec (@config_headers)
3974 {
3975 my ($out, @ins) = split_config_file_spec ($spec);
3976 push (@all, basename ($out))
3977 if dirname ($out) eq $relative_dir;
3978 }
3980 # Install `all' hooks.
3981 if (rule "all-local")
3982 {
3983 push (@all, "all-local");
3984 &depend ('.PHONY', "all-local");
3985 }
3987 &pretty_print_rule ("all-am:", "\t\t", @all);
3988 &depend ('.PHONY', 'all-am', 'all');
3991 # Output `all'.
3993 my @local_headers = ();
3994 push @local_headers, '$(BUILT_SOURCES)'
3995 if var ('BUILT_SOURCES');
3996 foreach my $spec (@config_headers)
3997 {
3998 my ($out, @ins) = split_config_file_spec ($spec);
3999 push @local_headers, basename ($out)
4000 if dirname ($out) eq $relative_dir;
4001 }
4003 if (@local_headers)
4004 {
4005 # We need to make sure config.h is built before we recurse.
4006 # We also want to make sure that built sources are built
4007 # before any ordinary `all' targets are run. We can't do this
4008 # by changing the order of dependencies to the "all" because
4009 # that breaks when using parallel makes. Instead we handle
4010 # things explicitly.
4011 $output_all .= ("all: @local_headers"
4012 . "\n\t"
4013 . '$(MAKE) $(AM_MAKEFLAGS) '
4014 . (var ('SUBDIRS') ? 'all-recursive' : 'all-am')
4015 . "\n\n");
4016 }
4017 else
4018 {
4019 $output_all .= "all: " . (var ('SUBDIRS')
4020 ? 'all-recursive' : 'all-am') . "\n\n";
4021 }
4022 }
4025 # &do_check_merge_target ()
4026 # -------------------------
4027 # Handle check merge target specially.
4028 sub do_check_merge_target ()
4029 {
4030 if (rule 'check-local')
4031 {
4032 # User defined local form of target. So include it.
4033 push @check_tests, 'check-local';
4034 depend '.PHONY', 'check-local';
4035 }
4037 # In --cygnus mode, check doesn't depend on all.
4038 if (option 'cygnus')
4039 {
4040 # Just run the local check rules.
4041 pretty_print_rule ('check-am:', "\t\t", @check);
4042 }
4043 else
4044 {
4045 # The check target must depend on the local equivalent of
4046 # `all', to ensure all the primary targets are built. Then it
4047 # must build the local check rules.
4048 $output_rules .= "check-am: all-am\n";
4049 pretty_print_rule ("\t\$(MAKE) \$(AM_MAKEFLAGS)", "\t ",
4050 @check)
4051 if @check;
4052 }
4053 pretty_print_rule ("\t\$(MAKE) \$(AM_MAKEFLAGS)", "\t ",
4054 @check_tests)
4055 if @check_tests;
4057 depend '.PHONY', 'check', 'check-am';
4058 # Handle recursion. We have to honor BUILT_SOURCES like for `all:'.
4059 $output_rules .= ("check: "
4060 . (var ('BUILT_SOURCES')
4061 ? "\$(BUILT_SOURCES)\n\t\$(MAKE) \$(AM_MAKEFLAGS) "
4062 : '')
4063 . (var ('SUBDIRS') ? 'check-recursive' : 'check-am')
4064 . "\n");
4065 }
4067 # handle_clean ($MAKEFILE)
4068 # ------------------------
4069 # Handle all 'clean' targets.
4070 sub handle_clean ($)
4071 {
4072 my ($makefile) = @_;
4074 # Clean the files listed in user variables if they exist.
4075 $clean_files{'$(MOSTLYCLEANFILES)'} = MOSTLY_CLEAN
4076 if var ('MOSTLYCLEANFILES');
4077 $clean_files{'$(CLEANFILES)'} = CLEAN
4078 if var ('CLEANFILES');
4079 $clean_files{'$(DISTCLEANFILES)'} = DIST_CLEAN
4080 if var ('DISTCLEANFILES');
4081 $clean_files{'$(MAINTAINERCLEANFILES)'} = MAINTAINER_CLEAN
4082 if var ('MAINTAINERCLEANFILES');
4084 # Built sources are automatically removed by maintainer-clean.
4085 $clean_files{'$(BUILT_SOURCES)'} = MAINTAINER_CLEAN
4086 if var ('BUILT_SOURCES');
4088 # Compute a list of "rm"s to run for each target.
4089 my %rms = (MOSTLY_CLEAN, [],
4090 CLEAN, [],
4091 DIST_CLEAN, [],
4092 MAINTAINER_CLEAN, []);
4094 foreach my $file (keys %clean_files)
4095 {
4096 my $when = $clean_files{$file};
4097 prog_error 'invalid entry in %clean_files'
4098 unless exists $rms{$when};
4100 my $rm = "rm -f $file";
4101 # If file is a variable, make sure when don't call `rm -f' without args.
4102 $rm ="test -z \"$file\" || $rm"
4103 if ($file =~ /^\s*\$(\(.*\)|\{.*\})\s*$/);
4105 push @{$rms{$when}}, "\t-$rm\n";
4106 }
4108 $output_rules .= &file_contents
4109 ('clean',
4110 new Automake::Location,
4111 MOSTLYCLEAN_RMS => join ('', @{$rms{&MOSTLY_CLEAN}}),
4112 CLEAN_RMS => join ('', @{$rms{&CLEAN}}),
4113 DISTCLEAN_RMS => join ('', @{$rms{&DIST_CLEAN}}),
4114 MAINTAINER_CLEAN_RMS => join ('', @{$rms{&MAINTAINER_CLEAN}}),
4115 MAKEFILE => basename $makefile,
4116 );
4117 }
4120 # &target_cmp ($A, $B)
4121 # --------------------
4122 # Subroutine for &handle_factored_dependencies to let `.PHONY' be last.
4123 sub target_cmp
4124 {
4125 return 0
4126 if $a eq $b;
4127 return -1
4128 if $b eq '.PHONY';
4129 return 1
4130 if $a eq '.PHONY';
4131 return $a cmp $b;
4132 }
4135 # &handle_factored_dependencies ()
4136 # --------------------------------
4137 # Handle everything related to gathered targets.
4138 sub handle_factored_dependencies
4139 {
4140 # Reject bad hooks.
4141 foreach my $utarg ('uninstall-data-local', 'uninstall-data-hook',
4142 'uninstall-exec-local', 'uninstall-exec-hook')
4143 {
4144 my $x = $utarg;
4145 $x =~ s/(data|exec)-//;
4146 reject_rule ($utarg, "use `$x', not `$utarg'");
4147 }
4149 reject_rule ('install-local',
4150 "use `install-data-local' or `install-exec-local', "
4151 . "not `install-local'");
4153 reject_rule ('install-info-local',
4154 "`install-info-local' target defined but "
4155 . "`no-installinfo' option not in use")
4156 unless option 'no-installinfo';
4158 # Install the -local hooks.
4159 foreach (keys %dependencies)
4160 {
4161 # Hooks are installed on the -am targets.
4162 s/-am$// or next;
4163 if (rule "$_-local")
4164 {
4165 depend ("$_-am", "$_-local");
4166 depend ('.PHONY', "$_-local");
4167 }
4168 }
4170 # Install the -hook hooks.
4171 # FIXME: Why not be as liberal as we are with -local hooks?
4172 foreach ('install-exec', 'install-data', 'uninstall')
4173 {
4174 if (rule ("$_-hook"))
4175 {
4176 $actions{"$_-am"} .=
4177 ("\t\@\$(NORMAL_INSTALL)\n"
4178 . "\t" . '$(MAKE) $(AM_MAKEFLAGS) ' . "$_-hook\n");
4179 }
4180 }
4182 # All the required targets are phony.
4183 depend ('.PHONY', keys %required_targets);
4185 # Actually output gathered targets.
4186 foreach (sort target_cmp keys %dependencies)
4187 {
4188 # If there is nothing about this guy, skip it.
4189 next
4190 unless (@{$dependencies{$_}}
4191 || $actions{$_}
4192 || $required_targets{$_});
4194 # Define gathered targets in undefined conditions.
4195 # FIXME: Right now we must handle .PHONY as an exception,
4196 # because people write things like
4197 # .PHONY: myphonytarget
4198 # to append dependencies. This would not work if Automake
4199 # refrained from defining its own .PHONY target as it does
4200 # with other overridden targets.
4201 my @undefined_conds = (TRUE,);
4202 if ($_ ne '.PHONY')
4203 {
4204 @undefined_conds =
4205 Automake::Rule::define ($_, 'internal',
4206 RULE_AUTOMAKE, TRUE, INTERNAL);
4207 }
4208 my @uniq_deps = uniq (sort @{$dependencies{$_}});
4209 foreach my $cond (@undefined_conds)
4210 {
4211 my $condstr = $cond->subst_string;
4212 &pretty_print_rule ("$condstr$_:", "$condstr\t", @uniq_deps);
4213 $output_rules .= $actions{$_} if defined $actions{$_};
4214 $output_rules .= "\n";
4215 }
4216 }
4217 }
4220 # &handle_tests_dejagnu ()
4221 # ------------------------
4222 sub handle_tests_dejagnu
4223 {
4224 push (@check_tests, 'check-DEJAGNU');
4225 $output_rules .= file_contents ('dejagnu', new Automake::Location);
4226 }
4229 # Handle TESTS variable and other checks.
4230 sub handle_tests
4231 {
4232 if (option 'dejagnu')
4233 {
4234 &handle_tests_dejagnu;
4235 }
4236 else
4237 {
4238 foreach my $c ('DEJATOOL', 'RUNTEST', 'RUNTESTFLAGS')
4239 {
4240 reject_var ($c, "`$c' defined but `dejagnu' not in "
4241 . "`AUTOMAKE_OPTIONS'");
4242 }
4243 }
4245 if (var ('TESTS'))
4246 {
4247 push (@check_tests, 'check-TESTS');
4248 $output_rules .= &file_contents ('check', new Automake::Location);
4249 }
4250 }
4252 # Handle Emacs Lisp.
4253 sub handle_emacs_lisp
4254 {
4255 my @elfiles = &am_install_var ('-candist', 'lisp', 'LISP',
4256 'lisp', 'noinst');
4258 return if ! @elfiles;
4260 define_pretty_variable ('am__ELFILES', TRUE, INTERNAL,
4261 map { $_->[1] } @elfiles);
4262 define_pretty_variable ('am__ELCFILES', TRUE, INTERNAL,
4263 '$(am__ELFILES:.el=.elc)');
4264 # This one can be overridden by users.
4265 define_pretty_variable ('ELCFILES', TRUE, INTERNAL, '$(am__ELCFILES)');
4267 push @all, '$(ELCFILES)';
4269 require_variables ($elfiles[0][0], "Emacs Lisp sources seen", TRUE,
4270 'EMACS', 'lispdir');
4271 require_conf_file ($elfiles[0][0], FOREIGN, 'elisp-comp');
4272 &define_variable ('elisp_comp', $config_aux_dir . '/elisp-comp', INTERNAL);
4273 }
4275 # Handle Python
4276 sub handle_python
4277 {
4278 my @pyfiles = &am_install_var ('-defaultdist', 'python', 'PYTHON',
4279 'noinst');
4280 return if ! @pyfiles;
4282 require_variables ($pyfiles[0][0], "Python sources seen", TRUE, 'PYTHON');
4283 require_conf_file ($pyfiles[0][0], FOREIGN, 'py-compile');
4284 &define_variable ('py_compile', $config_aux_dir . '/py-compile', INTERNAL);
4285 }
4287 # Handle Java.
4288 sub handle_java
4289 {
4290 my @sourcelist = &am_install_var ('-candist',
4291 'java', 'JAVA',
4292 'java', 'noinst', 'check');
4293 return if ! @sourcelist;
4295 my @prefix = am_primary_prefixes ('JAVA', 1,
4296 'java', 'noinst', 'check');
4298 my $dir;
4299 foreach my $curs (@prefix)
4300 {
4301 next
4302 if $curs eq 'EXTRA';
4304 err_var "${curs}_JAVA", "multiple _JAVA primaries in use"
4305 if defined $dir;
4306 $dir = $curs;
4307 }
4310 push (@all, 'class' . $dir . '.stamp');
4311 }
4314 # Handle some of the minor options.
4315 sub handle_minor_options
4316 {
4317 if (option 'readme-alpha')
4318 {
4319 if ($relative_dir eq '.')
4320 {
4321 if ($package_version !~ /^$GNITS_VERSION_PATTERN$/)
4322 {
4323 msg ('error-gnits', $package_version_location,
4324 "version `$package_version' doesn't follow " .
4325 "Gnits standards");
4326 }
4327 if (defined $1 && -f 'README-alpha')
4328 {
4329 # This means we have an alpha release. See
4330 # GNITS_VERSION_PATTERN for details.
4331 push_dist_common ('README-alpha');
4332 }
4333 }
4334 }
4335 }
4337 ################################################################
4339 # ($OUTPUT, @INPUTS)
4340 # &split_config_file_spec ($SPEC)
4341 # -------------------------------
4342 # Decode the Autoconf syntax for config files (files, headers, links
4343 # etc.).
4344 sub split_config_file_spec ($)
4345 {
4346 my ($spec) = @_;
4347 my ($output, @inputs) = split (/:/, $spec);
4349 push @inputs, "$output.in"
4350 unless @inputs;
4352 return ($output, @inputs);
4353 }
4355 # $input
4356 # locate_am (@POSSIBLE_SOURCES)
4357 # -----------------------------
4358 # AC_CONFIG_FILES allow specifications such as Makefile:top.in:mid.in:bot.in
4359 # This functions returns the first *.in file for which a *.am exists.
4360 # It returns undef otherwise.
4361 sub locate_am (@)
4362 {
4363 my (@rest) = @_;
4364 my $input;
4365 foreach my $file (@rest)
4366 {
4367 if (($file =~ /^(.*)\.in$/) && -f "$1.am")
4368 {
4369 $input = $file;
4370 last;
4371 }
4372 }
4373 return $input;
4374 }
4376 my %make_list;
4378 # &scan_autoconf_config_files ($WHERE, $CONFIG-FILES)
4379 # ---------------------------------------------------
4380 # Study $CONFIG-FILES which is the first argument to AC_CONFIG_FILES
4381 # (or AC_OUTPUT).
4382 sub scan_autoconf_config_files ($$)
4383 {
4384 my ($where, $config_files) = @_;
4386 # Look at potential Makefile.am's.
4387 foreach (split ' ', $config_files)
4388 {
4389 # Must skip empty string for Perl 4.
4390 next if $_ eq "\\" || $_ eq '';
4392 # Handle $local:$input syntax.
4393 my ($local, @rest) = split (/:/);
4394 @rest = ("$local.in",) unless @rest;
4395 my $input = locate_am @rest;
4396 if ($input)
4397 {
4398 # We have a file that automake should generate.
4399 $make_list{$input} = join (':', ($local, @rest));
4400 }
4401 else
4402 {
4403 # We have a file that automake should cause to be
4404 # rebuilt, but shouldn't generate itself.
4405 push (@other_input_files, $_);
4406 }
4407 $ac_config_files_location{$local} = $where;
4408 }
4409 }
4412 # &scan_autoconf_traces ($FILENAME)
4413 # ---------------------------------
4414 sub scan_autoconf_traces ($)
4415 {
4416 my ($filename) = @_;
4418 # Macros to trace, with their minimal number of arguments.
4419 my %traced = (
4420 AC_CANONICAL_HOST => 0,
4421 AC_CANONICAL_SYSTEM => 0,
4422 AC_CONFIG_AUX_DIR => 1,
4423 AC_CONFIG_FILES => 1,
4424 AC_CONFIG_HEADERS => 1,
4425 AC_CONFIG_LINKS => 1,
4426 AC_INIT => 0,
4427 AC_LIBSOURCE => 1,
4428 AC_SUBST => 1,
4429 AM_AUTOMAKE_VERSION => 1,
4430 AM_CONDITIONAL => 2,
4431 AM_ENABLE_MULTILIB => 0,
4432 AM_GNU_GETTEXT => 0,
4433 AM_INIT_AUTOMAKE => 0,
4434 AM_MAINTAINER_MODE => 0,
4435 AM_PROG_CC_C_O => 0,
4436 m4_include => 1,
4437 m4_sinclude => 1,
4438 sinclude => 1,
4439 );
4441 my $traces = ($ENV{AUTOCONF} || 'autoconf') . " ";
4443 # Use a separator unlikely to be used, not `:', the default, which
4444 # has a precise meaning for AC_CONFIG_FILES and so on.
4445 $traces .= join (' ',
4446 map { "--trace=$_" . ':\$f:\$l::\$n::\${::}%' }
4447 (keys %traced));
4449 my $tracefh = new Automake::XFile ("$traces $filename |");
4450 verb "reading $traces";
4452 while ($_ = $tracefh->getline)
4453 {
4454 chomp;
4455 my ($here, @args) = split /::/;
4456 my $where = new Automake::Location $here;
4457 my $macro = $args[0];
4459 prog_error ("unrequested trace `$macro'")
4460 unless exists $traced{$macro};
4462 # Skip and diagnose malformed calls.
4463 if ($#args < $traced{$macro})
4464 {
4465 msg ('syntax', $where, "not enough arguments for $macro");
4466 next;
4467 }
4469 # Alphabetical ordering please.
4470 if ($macro eq 'AC_CANONICAL_HOST')
4471 {
4472 if (! $seen_canonical)
4473 {
4474 $seen_canonical = AC_CANONICAL_HOST;
4475 $canonical_location = $where;
4476 }
4477 }
4478 elsif ($macro eq 'AC_CANONICAL_SYSTEM')
4479 {
4480 $seen_canonical = AC_CANONICAL_SYSTEM;
4481 $canonical_location = $where;
4482 }
4483 elsif ($macro eq 'AC_CONFIG_AUX_DIR')
4484 {
4485 @config_aux_path = $args[1];
4486 $config_aux_dir_set_in_configure_in = 1;
4487 }
4488 elsif ($macro eq 'AC_CONFIG_FILES')
4489 {
4490 # Look at potential Makefile.am's.
4491 scan_autoconf_config_files ($where, $args[1]);
4492 }
4493 elsif ($macro eq 'AC_CONFIG_HEADERS')
4494 {
4495 foreach my $spec (split (' ', $args[1]))
4496 {
4497 my ($dest, @src) = split (':', $spec);
4498 $ac_config_files_location{$dest} = $where;
4499 push @config_headers, $spec;
4500 }
4501 }
4502 elsif ($macro eq 'AC_CONFIG_LINKS')
4503 {
4504 foreach my $spec (split (' ', $args[1]))
4505 {
4506 my ($dest, $src) = split (':', $spec);
4507 $ac_config_files_location{$dest} = $where;
4508 push @config_links, $spec;
4509 }
4510 }
4511 elsif ($macro eq 'AC_INIT')
4512 {
4513 if (defined $args[2])
4514 {
4515 $package_version = $args[2];
4516 $package_version_location = $where;
4517 }
4518 }
4519 elsif ($macro eq 'AC_LIBSOURCE')
4520 {
4521 $libsources{$args[1]} = $here;
4522 }
4523 elsif ($macro eq 'AC_SUBST')
4524 {
4525 # Just check for alphanumeric in AC_SUBST. If you do
4526 # AC_SUBST(5), then too bad.
4527 $configure_vars{$args[1]} = $where
4528 if $args[1] =~ /^\w+$/;
4529 }
4530 elsif ($macro eq 'AM_AUTOMAKE_VERSION')
4531 {
4532 error ($where,
4533 "version mismatch. This is Automake $VERSION,\n" .
4534 "but the definition used by this AM_INIT_AUTOMAKE\n" .
4535 "comes from Automake $args[1]. You should recreate\n" .
4536 "aclocal.m4 with aclocal and run automake again.\n",
4537 # $? = 63 is used to indicate version mismatch to missing.
4538 exit_code => 63)
4539 if $VERSION ne $args[1];
4541 $seen_automake_version = 1;
4542 }
4543 elsif ($macro eq 'AM_CONDITIONAL')
4544 {
4545 $configure_cond{$args[1]} = $where;
4546 }
4547 elsif ($macro eq 'AM_ENABLE_MULTILIB')
4548 {
4549 $seen_multilib = $where;
4550 }
4551 elsif ($macro eq 'AM_GNU_GETTEXT')
4552 {
4553 $seen_gettext = $where;
4554 $ac_gettext_location = $where;
4555 $seen_gettext_external = grep ($_ eq 'external', @args);
4556 }
4557 elsif ($macro eq 'AM_INIT_AUTOMAKE')
4558 {
4559 $seen_init_automake = $where;
4560 if (defined $args[2])
4561 {
4562 $package_version = $args[2];
4563 $package_version_location = $where;
4564 }
4565 elsif (defined $args[1])
4566 {
4567 exit $exit_code
4568 if (process_global_option_list ($where,
4569 split (' ', $args[1])));
4570 }
4571 }
4572 elsif ($macro eq 'AM_MAINTAINER_MODE')
4573 {
4574 $seen_maint_mode = $where;
4575 }
4576 elsif ($macro eq 'AM_PROG_CC_C_O')
4577 {
4578 $seen_cc_c_o = $where;
4579 }
4580 elsif ($macro eq 'm4_include'
4581 || $macro eq 'm4_sinclude'
4582 || $macro eq 'sinclude')
4583 {
4584 # Some modified versions of Autoconf don't use
4585 # forzen files. Consequently it's possible that we see all
4586 # m4_include's performed during Autoconf's startup.
4587 # Obviously we don't want to distribute Autoconf's files
4588 # so we skip absolute filenames here.
4589 push @configure_deps, '$(top_srcdir)/' . $args[1]
4590 unless $here =~ m,^(?:\w:)?[\\/],;
4591 # Keep track of the greatest timestamp.
4592 if (-e $args[1])
4593 {
4594 my $mtime = mtime $args[1];
4595 $configure_deps_greatest_timestamp = $mtime
4596 if $mtime > $configure_deps_greatest_timestamp;
4597 }
4598 }
4599 }
4601 $tracefh->close;
4602 }
4605 # &scan_autoconf_files ()
4606 # -----------------------
4607 # Check whether we use `configure.ac' or `configure.in'.
4608 # Scan it (and possibly `aclocal.m4') for interesting things.
4609 # We must scan aclocal.m4 because there might be AC_SUBSTs and such there.
4610 sub scan_autoconf_files ()
4611 {
4612 # Reinitialize libsources here. This isn't really necessary,
4613 # since we currently assume there is only one configure.ac. But
4614 # that won't always be the case.
4615 %libsources = ();
4617 # Keep track of the youngest configure dependency.
4618 $configure_deps_greatest_timestamp = mtime $configure_ac;
4619 if (-e 'aclocal.m4')
4620 {
4621 my $mtime = mtime 'aclocal.m4';
4622 $configure_deps_greatest_timestamp = $mtime
4623 if $mtime > $configure_deps_greatest_timestamp;
4624 }
4626 scan_autoconf_traces ($configure_ac);
4628 @configure_input_files = sort keys %make_list;
4629 # Set input and output files if not specified by user.
4630 if (! @input_files)
4631 {
4632 @input_files = @configure_input_files;
4633 %output_files = %make_list;
4634 }
4637 if (! $seen_init_automake)
4638 {
4639 err_ac ("no proper invocation of AM_INIT_AUTOMAKE was found.\nYou "
4640 . "should verify that $configure_ac invokes AM_INIT_AUTOMAKE,"
4641 . "\nthat aclocal.m4 is present in the top-level directory,\n"
4642 . "and that aclocal.m4 was recently regenerated "
4643 . "(using aclocal).");
4644 }
4645 else
4646 {
4647 if (! $seen_automake_version)
4648 {
4649 if (-f 'aclocal.m4')
4650 {
4651 error ($seen_init_automake,
4652 "your implementation of AM_INIT_AUTOMAKE comes from " .
4653 "an\nold Automake version. You should recreate " .
4654 "aclocal.m4\nwith aclocal and run automake again.\n",
4655 # $? = 63 is used to indicate version mismatch to missing.
4656 exit_code => 63);
4657 }
4658 else
4659 {
4660 error ($seen_init_automake,
4661 "no proper implementation of AM_INIT_AUTOMAKE was " .
4662 "found,\nprobably because aclocal.m4 is missing...\n" .
4663 "You should run aclocal to create this file, then\n" .
4664 "run automake again.\n");
4665 }
4666 }
4667 }
4669 # Look for some files we need. Always check for these. This
4670 # check must be done for every run, even those where we are only
4671 # looking at a subdir Makefile. We must set relative_dir so that
4672 # the file-finding machinery works.
4673 # FIXME: Is this broken because it needs dynamic scopes.
4674 # My tests seems to show it's not the case.
4675 $relative_dir = '.';
4676 require_conf_file ($configure_ac, FOREIGN, 'install-sh', 'missing');
4677 err_am "`install.sh' is an anachronism; use `install-sh' instead"
4678 if -f $config_aux_path[0] . '/install.sh';
4680 # Preserve dist_common for later.
4681 $configure_dist_common = variable_value ('DIST_COMMON') || '';
4682 }
4684 ################################################################
4686 # Set up for Cygnus mode.
4687 sub check_cygnus
4688 {
4689 my $cygnus = option 'cygnus';
4690 return unless $cygnus;
4692 set_strictness ('foreign');
4693 set_option ('no-installinfo', $cygnus);
4694 set_option ('no-dependencies', $cygnus);
4695 set_option ('no-dist', $cygnus);
4697 err_ac "`AM_MAINTAINER_MODE' required when --cygnus specified"
4698 if !$seen_maint_mode;
4699 }
4701 # Do any extra checking for GNU standards.
4702 sub check_gnu_standards
4703 {
4704 if ($relative_dir eq '.')
4705 {
4706 # In top level (or only) directory.
4707 require_file ("$am_file.am", GNU,
4708 qw/INSTALL NEWS README AUTHORS ChangeLog/);
4710 # Accept one of these three licenses; default to COPYING.
4711 # Make sure we do not overwrite an existing license.
4712 my $license;
4713 foreach (qw /COPYING COPYING.LIB COPYING.LESSER/)
4714 {
4715 if (-f $_)
4716 {
4717 $license = $_;
4718 last;
4719 }
4720 }
4721 require_file ("$am_file.am", GNU, 'COPYING')
4722 unless $license;
4723 }
4725 for my $opt ('no-installman', 'no-installinfo')
4726 {
4727 msg ('error-gnu', option $opt,
4728 "option `$opt' disallowed by GNU standards")
4729 if option $opt;
4730 }
4731 }
4733 # Do any extra checking for GNITS standards.
4734 sub check_gnits_standards
4735 {
4736 if ($relative_dir eq '.')
4737 {
4738 # In top level (or only) directory.
4739 require_file ("$am_file.am", GNITS, 'THANKS');
4740 }
4741 }
4743 ################################################################
4744 #
4745 # Functions to handle files of each language.
4747 # Each `lang_X_rewrite($DIRECTORY, $BASE, $EXT)' function follows a
4748 # simple formula: Return value is LANG_SUBDIR if the resulting object
4749 # file should be in a subdir if the source file is, LANG_PROCESS if
4750 # file is to be dealt with, LANG_IGNORE otherwise.
4752 # Much of the actual processing is handled in
4753 # handle_single_transform_list. These functions exist so that
4754 # auxiliary information can be recorded for a later cleanup pass.
4755 # Note that the calls to these functions are computed, so don't bother
4756 # searching for their precise names in the source.
4758 # This is just a convenience function that can be used to determine
4759 # when a subdir object should be used.
4760 sub lang_sub_obj
4761 {
4762 return option 'subdir-objects' ? LANG_SUBDIR : LANG_PROCESS;
4763 }
4765 # Rewrite a single C source file.
4766 sub lang_c_rewrite
4767 {
4768 my ($directory, $base, $ext) = @_;
4770 if (option 'ansi2knr' && $base =~ /_$/)
4771 {
4772 # FIXME: include line number in error.
4773 err_am "C source file `$base.c' would be deleted by ansi2knr rules";
4774 }
4776 my $r = LANG_PROCESS;
4777 if (option 'subdir-objects')
4778 {
4779 $r = LANG_SUBDIR;
4780 $base = $directory . '/' . $base
4781 unless $directory eq '.' || $directory eq '';
4783 err_am ("C objects in subdir but `AM_PROG_CC_C_O' "
4784 . "not in `$configure_ac'",
4785 uniq_scope => US_GLOBAL)
4786 unless $seen_cc_c_o;
4788 require_conf_file ("$am_file.am", FOREIGN, 'compile');
4790 # In this case we already have the directory information, so
4791 # don't add it again.
4792 $de_ansi_files{$base} = '';
4793 }
4794 else
4795 {
4796 $de_ansi_files{$base} = (($directory eq '.' || $directory eq '')
4797 ? ''
4798 : "$directory/");
4799 }
4801 return $r;
4802 }
4804 # Rewrite a single C++ source file.
4805 sub lang_cxx_rewrite
4806 {
4807 return &lang_sub_obj;
4808 }
4810 # Rewrite a single header file.
4811 sub lang_header_rewrite
4812 {
4813 # Header files are simply ignored.
4814 return LANG_IGNORE;
4815 }
4817 # Rewrite a single yacc file.
4818 sub lang_yacc_rewrite
4819 {
4820 my ($directory, $base, $ext) = @_;
4822 my $r = &lang_sub_obj;
4823 (my $newext = $ext) =~ tr/y/c/;
4824 return ($r, $newext);
4825 }
4827 # Rewrite a single yacc++ file.
4828 sub lang_yaccxx_rewrite
4829 {
4830 my ($directory, $base, $ext) = @_;
4832 my $r = &lang_sub_obj;
4833 (my $newext = $ext) =~ tr/y/c/;
4834 return ($r, $newext);
4835 }
4837 # Rewrite a single lex file.
4838 sub lang_lex_rewrite
4839 {
4840 my ($directory, $base, $ext) = @_;
4842 my $r = &lang_sub_obj;
4843 (my $newext = $ext) =~ tr/l/c/;
4844 return ($r, $newext);
4845 }
4847 # Rewrite a single lex++ file.
4848 sub lang_lexxx_rewrite
4849 {
4850 my ($directory, $base, $ext) = @_;
4852 my $r = &lang_sub_obj;
4853 (my $newext = $ext) =~ tr/l/c/;
4854 return ($r, $newext);
4855 }
4857 # Rewrite a single assembly file.
4858 sub lang_asm_rewrite
4859 {
4860 return &lang_sub_obj;
4861 }
4863 # Rewrite a single Fortran 77 file.
4864 sub lang_f77_rewrite
4865 {
4866 return LANG_PROCESS;
4867 }
4869 # Rewrite a single preprocessed Fortran 77 file.
4870 sub lang_ppf77_rewrite
4871 {
4872 return LANG_PROCESS;
4873 }
4875 # Rewrite a single ratfor file.
4876 sub lang_ratfor_rewrite
4877 {
4878 return LANG_PROCESS;
4879 }
4881 # Rewrite a single Objective C file.
4882 sub lang_objc_rewrite
4883 {
4884 return &lang_sub_obj;
4885 }
4887 # Rewrite a single Java file.
4888 sub lang_java_rewrite
4889 {
4890 return LANG_SUBDIR;
4891 }
4893 # The lang_X_finish functions are called after all source file
4894 # processing is done. Each should handle defining rules for the
4895 # language, etc. A finish function is only called if a source file of
4896 # the appropriate type has been seen.
4898 sub lang_c_finish
4899 {
4900 # Push all libobjs files onto de_ansi_files. We actually only
4901 # push files which exist in the current directory, and which are
4902 # genuine source files.
4903 foreach my $file (keys %libsources)
4904 {
4905 if ($file =~ /^(.*)\.[cly]$/ && -f "$relative_dir/$file")
4906 {
4907 $de_ansi_files{$1} = ''
4908 }
4909 }
4911 if (option 'ansi2knr' && keys %de_ansi_files)
4912 {
4913 # Make all _.c files depend on their corresponding .c files.
4914 my @objects;
4915 foreach my $base (sort keys %de_ansi_files)
4916 {
4917 # Each _.c file must depend on ansi2knr; otherwise it
4918 # might be used in a parallel build before it is built.
4919 # We need to support files in the srcdir and in the build
4920 # dir (because these files might be auto-generated. But
4921 # we can't use $< -- some makes only define $< during a
4922 # suffix rule.
4923 my $ansfile = $de_ansi_files{$base} . $base . '.c';
4924 $output_rules .= ($base . "_.c: $ansfile \$(ANSI2KNR)\n\t"
4925 . '$(CPP) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS) $(CPPFLAGS) '
4926 . '`if test -f $(srcdir)/' . $ansfile
4927 . '; then echo $(srcdir)/' . $ansfile
4928 . '; else echo ' . $ansfile . '; fi` '
4929 . "| sed 's/^# \\([0-9]\\)/#line \\1/' "
4930 . '| $(ANSI2KNR) > $@'
4931 # If ansi2knr fails then we shouldn't
4932 # create the _.c file
4933 . " || rm -f \$\@\n");
4934 push (@objects, $base . '_.$(OBJEXT)');
4935 push (@objects, $base . '_.lo')
4936 if var ('LIBTOOL');
4937 }
4939 # Make all _.o (and _.lo) files depend on ansi2knr.
4940 # Use a sneaky little hack to make it print nicely.
4941 &pretty_print_rule ('', '', @objects, ':', '$(ANSI2KNR)');
4942 }
4943 }
4945 # This is a yacc helper which is called whenever we have decided to
4946 # compile a yacc file.
4947 sub lang_yacc_target_hook
4948 {
4949 my ($self, $aggregate, $output, $input) = @_;
4951 my $flag = $aggregate . "_YFLAGS";
4952 my $flagvar = var $flag;
4953 my $YFLAGSvar = var 'YFLAGS';
4954 if (($flagvar && $flagvar->variable_value =~ /$DASH_D_PATTERN/o)
4955 || ($YFLAGSvar && $YFLAGSvar->variable_value =~ /$DASH_D_PATTERN/o))
4956 {
4957 (my $output_base = $output) =~ s/$KNOWN_EXTENSIONS_PATTERN$//;
4958 my $header = $output_base . '.h';
4960 # Found a `-d' that applies to the compilation of this file.
4961 # Add a dependency for the generated header file, and arrange
4962 # for that file to be included in the distribution.
4963 # FIXME: this fails for `nodist_*_SOURCES'.
4964 foreach my $cond (Automake::Rule::define (${header}, 'internal',
4965 RULE_AUTOMAKE, TRUE,
4966 INTERNAL))
4967 {
4968 my $condstr = $cond->subst_string;
4969 $output_rules .= ("$condstr${header}: $output\n"
4970 # Recover from removal of $header
4971 . "$condstr\t\@if test ! -f \$@; then \\\n"
4972 . "$condstr\t rm -f $output; \\\n"
4973 . "$condstr\t \$(MAKE) $output; \\\n"
4974 . "$condstr\telse :; fi\n");
4975 }
4976 &push_dist_common ($header);
4978 # If the files are built in the build directory, then we want
4979 # to remove them with `make clean'. If they are in srcdir
4980 # they shouldn't be touched. However, we can't determine this
4981 # statically, and the GNU rules say that yacc/lex output files
4982 # should be removed by maintainer-clean. So that's what we
4983 # do.
4984 $clean_files{$header} = MAINTAINER_CLEAN;
4985 }
4986 # Erase $OUTPUT on `make maintainer-clean' (by GNU standards).
4987 # See the comment above for $HEADER.
4988 $clean_files{$output} = MAINTAINER_CLEAN;
4989 }
4991 # This is a lex helper which is called whenever we have decided to
4992 # compile a lex file.
4993 sub lang_lex_target_hook
4994 {
4995 my ($self, $aggregate, $output, $input) = @_;
4996 # If the files are built in the build directory, then we want to
4997 # remove them with `make clean'. If they are in srcdir they
4998 # shouldn't be touched. However, we can't determine this
4999 # statically, and the GNU rules say that yacc/lex output files
5000 # should be removed by maintainer-clean. So that's what we do.
5001 $clean_files{$output} = MAINTAINER_CLEAN;
5002 }
5004 # This is a helper for both lex and yacc.
5005 sub yacc_lex_finish_helper
5006 {
5007 return if defined $language_scratch{'lex-yacc-done'};
5008 $language_scratch{'lex-yacc-done'} = 1;
5010 # If there is more than one distinct yacc (resp lex) source file
5011 # in a given directory, then the `ylwrap' program is required to
5012 # allow parallel builds to work correctly. FIXME: for now, no
5013 # line number.
5014 require_conf_file ($configure_ac, FOREIGN, 'ylwrap');
5015 if ($config_aux_dir_set_in_configure_in)
5016 {
5017 &define_variable ('YLWRAP', $config_aux_dir . "/ylwrap", INTERNAL);
5018 }
5019 else
5020 {
5021 &define_variable ('YLWRAP', '$(top_srcdir)/ylwrap', INTERNAL);
5022 }
5023 }
5025 sub lang_yacc_finish
5026 {
5027 return if defined $language_scratch{'yacc-done'};
5028 $language_scratch{'yacc-done'} = 1;
5030 reject_var 'YACCFLAGS', "`YACCFLAGS' obsolete; use `YFLAGS' instead";
5032 &yacc_lex_finish_helper
5033 if count_files_for_language ('yacc') > 1;
5034 }
5037 sub lang_lex_finish
5038 {
5039 return if defined $language_scratch{'lex-done'};
5040 $language_scratch{'lex-done'} = 1;
5042 &yacc_lex_finish_helper
5043 if count_files_for_language ('lex') > 1;
5044 }
5047 # Given a hash table of linker names, pick the name that has the most
5048 # precedence. This is lame, but something has to have global
5049 # knowledge in order to eliminate the conflict. Add more linkers as
5050 # required.
5051 sub resolve_linker
5052 {
5053 my (%linkers) = @_;
5055 foreach my $l (qw(GCJLINK CXXLINK F77LINK OBJCLINK))
5056 {
5057 return $l if defined $linkers{$l};
5058 }
5059 return 'LINK';
5060 }
5062 # Called to indicate that an extension was used.
5063 sub saw_extension
5064 {
5065 my ($ext) = @_;
5066 if (! defined $extension_seen{$ext})
5067 {
5068 $extension_seen{$ext} = 1;
5069 }
5070 else
5071 {
5072 ++$extension_seen{$ext};
5073 }
5074 }
5076 # Return the number of files seen for a given language. Knows about
5077 # special cases we care about. FIXME: this is hideous. We need
5078 # something that involves real language objects. For instance yacc
5079 # and yaccxx could both derive from a common yacc class which would
5080 # know about the strange ylwrap requirement. (Or better yet we could
5081 # just not support legacy yacc!)
5082 sub count_files_for_language
5083 {
5084 my ($name) = @_;
5086 my @names;
5087 if ($name eq 'yacc' || $name eq 'yaccxx')
5088 {
5089 @names = ('yacc', 'yaccxx');
5090 }
5091 elsif ($name eq 'lex' || $name eq 'lexxx')
5092 {
5093 @names = ('lex', 'lexxx');
5094 }
5095 else
5096 {
5097 @names = ($name);
5098 }
5100 my $r = 0;
5101 foreach $name (@names)
5102 {
5103 my $lang = $languages{$name};
5104 foreach my $ext (@{$lang->extensions})
5105 {
5106 $r += $extension_seen{$ext}
5107 if defined $extension_seen{$ext};
5108 }
5109 }
5111 return $r
5112 }
5114 # Called to ask whether source files have been seen . If HEADERS is 1,
5115 # headers can be included.
5116 sub saw_sources_p
5117 {
5118 my ($headers) = @_;
5120 # count all the sources
5121 my $count = 0;
5122 foreach my $val (values %extension_seen)
5123 {
5124 $count += $val;
5125 }
5127 if (!$headers)
5128 {
5129 $count -= count_files_for_language ('header');
5130 }
5132 return $count > 0;
5133 }
5136 # register_language (%ATTRIBUTE)
5137 # ------------------------------
5138 # Register a single language.
5139 # Each %ATTRIBUTE is of the form ATTRIBUTE => VALUE.
5140 sub register_language (%)
5141 {
5142 my (%option) = @_;
5144 # Set the defaults.
5145 $option{'ansi'} = 0
5146 unless defined $option{'ansi'};
5147 $option{'autodep'} = 'no'
5148 unless defined $option{'autodep'};
5149 $option{'linker'} = ''
5150 unless defined $option{'linker'};
5151 $option{'flags'} = []
5152 unless defined $option{'flags'};
5153 $option{'output_extensions'} = sub { return ( '.$(OBJEXT)', '.lo' ) }
5154 unless defined $option{'output_extensions'};
5156 my $lang = new Language (%option);
5158 # Fill indexes.
5159 $extension_map{$_} = $lang->name foreach @{$lang->extensions};
5160 $languages{$lang->name} = $lang;
5162 # Update the pattern of known extensions.
5163 accept_extensions (@{$lang->extensions});
5165 # Upate the $suffix_rule map.
5166 foreach my $suffix (@{$lang->extensions})
5167 {
5168 foreach my $dest (&{$lang->output_extensions} ($suffix))
5169 {
5170 register_suffix_rule (INTERNAL, $suffix, $dest);
5171 }
5172 }
5173 }
5175 # derive_suffix ($EXT, $OBJ)
5176 # --------------------------
5177 # This function is used to find a path from a user-specified suffix $EXT
5178 # to $OBJ or to some other suffix we recognize internally, e.g. `cc'.
5179 sub derive_suffix ($$)
5180 {
5181 my ($source_ext, $obj) = @_;
5183 while (! $extension_map{$source_ext}
5184 && $source_ext ne $obj
5185 && exists $suffix_rules->{$source_ext}
5186 && exists $suffix_rules->{$source_ext}{$obj})
5187 {
5188 $source_ext = $suffix_rules->{$source_ext}{$obj}[0];
5189 }
5191 return $source_ext;
5192 }
5195 ################################################################
5197 # Pretty-print something and append to output_rules.
5198 sub pretty_print_rule
5199 {
5200 $output_rules .= &makefile_wrap (@_);
5201 }
5204 ################################################################
5207 ## -------------------------------- ##
5208 ## Handling the conditional stack. ##
5209 ## -------------------------------- ##
5212 # $STRING
5213 # make_conditional_string ($NEGATE, $COND)
5214 # ----------------------------------------
5215 sub make_conditional_string ($$)
5216 {
5217 my ($negate, $cond) = @_;
5218 $cond = "${cond}_TRUE"
5219 unless $cond =~ /^TRUE|FALSE$/;
5220 $cond = Automake::Condition::conditional_negate ($cond)
5221 if $negate;
5222 return $cond;
5223 }
5226 # $COND
5227 # cond_stack_if ($NEGATE, $COND, $WHERE)
5228 # --------------------------------------
5229 sub cond_stack_if ($$$)
5230 {
5231 my ($negate, $cond, $where) = @_;
5233 error $where, "$cond does not appear in AM_CONDITIONAL"
5234 if ! $configure_cond{$cond} && $cond !~ /^TRUE|FALSE$/;
5236 push (@cond_stack, make_conditional_string ($negate, $cond));
5238 return new Automake::Condition (@cond_stack);
5239 }
5242 # $COND
5243 # cond_stack_else ($NEGATE, $COND, $WHERE)
5244 # ----------------------------------------
5245 sub cond_stack_else ($$$)
5246 {
5247 my ($negate, $cond, $where) = @_;
5249 if (! @cond_stack)
5250 {
5251 error $where, "else without if";
5252 return FALSE;
5253 }
5255 $cond_stack[$#cond_stack] =
5256 Automake::Condition::conditional_negate ($cond_stack[$#cond_stack]);
5258 # If $COND is given, check against it.
5259 if (defined $cond)
5260 {
5261 $cond = make_conditional_string ($negate, $cond);
5263 error ($where, "else reminder ($negate$cond) incompatible with "
5264 . "current conditional: $cond_stack[$#cond_stack]")
5265 if $cond_stack[$#cond_stack] ne $cond;
5266 }
5268 return new Automake::Condition (@cond_stack);
5269 }
5272 # $COND
5273 # cond_stack_endif ($NEGATE, $COND, $WHERE)
5274 # -----------------------------------------
5275 sub cond_stack_endif ($$$)
5276 {
5277 my ($negate, $cond, $where) = @_;
5278 my $old_cond;
5280 if (! @cond_stack)
5281 {
5282 error $where, "endif without if";
5283 return TRUE;
5284 }
5286 # If $COND is given, check against it.
5287 if (defined $cond)
5288 {
5289 $cond = make_conditional_string ($negate, $cond);
5291 error ($where, "endif reminder ($negate$cond) incompatible with "
5292 . "current conditional: $cond_stack[$#cond_stack]")
5293 if $cond_stack[$#cond_stack] ne $cond;
5294 }
5296 pop @cond_stack;
5298 return new Automake::Condition (@cond_stack);
5299 }
5305 ## ------------------------ ##
5306 ## Handling the variables. ##
5307 ## ------------------------ ##
5310 # &define_pretty_variable ($VAR, $COND, $WHERE, @VALUE)
5311 # -----------------------------------------------------
5312 # Like define_variable, but the value is a list, and the variable may
5313 # be defined conditionally. The second argument is the Condition
5314 # under which the value should be defined; this should be the empty
5315 # string to define the variable unconditionally. The third argument
5316 # is a list holding the values to use for the variable. The value is
5317 # pretty printed in the output file.
5318 sub define_pretty_variable ($$$@)
5319 {
5320 my ($var, $cond, $where, @value) = @_;
5322 if (! vardef ($var, $cond))
5323 {
5324 Automake::Variable::define ($var, VAR_AUTOMAKE, '', $cond, "@value",
5325 '', $where, VAR_PRETTY);
5326 rvar ($var)->rdef ($cond)->set_seen;
5327 }
5328 }
5331 # define_variable ($VAR, $VALUE, $WHERE)
5332 # --------------------------------------
5333 # Define a new user variable VAR to VALUE, but only if not already defined.
5334 sub define_variable ($$$)
5335 {
5336 my ($var, $value, $where) = @_;
5337 define_pretty_variable ($var, TRUE, $where, $value);
5338 }
5341 # define_files_variable ($VAR, \@BASENAME, $EXTENSION, $WHERE)
5342 # -----------------------------------------------------------
5343 # Define the $VAR which content is the list of file names composed of
5344 # a @BASENAME and the $EXTENSION.
5345 sub define_files_variable ($\@$$)
5346 {
5347 my ($var, $basename, $extension, $where) = @_;
5348 define_variable ($var,
5349 join (' ', map { "$_.$extension" } @$basename),
5350 $where);
5351 }
5354 # Like define_variable, but define a variable to be the configure
5355 # substitution by the same name.
5356 sub define_configure_variable ($)
5357 {
5358 my ($var) = @_;
5360 my $pretty = VAR_ASIS;
5361 my $owner = VAR_CONFIGURE;
5363 # Do not output the ANSI2KNR configure variable -- we AC_SUBST
5364 # it in protos.m4, but later redefine it elsewhere. This is
5365 # pretty hacky. We also don't output AMDEPBACKSLASH: it might
5366 # be subst'd by `\', which certainly would not be appreciated by
5367 # Make.
5368 if ($var eq 'ANSI2KNR' || $var eq 'AMDEPBACKSLASH')
5369 {
5370 $pretty = VAR_SILENT;
5371 $owner = VAR_AUTOMAKE;
5372 }
5374 Automake::Variable::define ($var, $owner, '', TRUE, subst $var,
5375 '', $configure_vars{$var}, $pretty);
5376 }
5379 # define_compiler_variable ($LANG)
5380 # --------------------------------
5381 # Define a compiler variable. We also handle defining the `LT'
5382 # version of the command when using libtool.
5383 sub define_compiler_variable ($)
5384 {
5385 my ($lang) = @_;
5387 my ($var, $value) = ($lang->compiler, $lang->compile);
5388 &define_variable ($var, $value, INTERNAL);
5389 &define_variable ("LT$var", "\$(LIBTOOL) --mode=compile $value", INTERNAL)
5390 if var ('LIBTOOL');
5391 }
5394 # define_linker_variable ($LANG)
5395 # ------------------------------
5396 # Define linker variables.
5397 sub define_linker_variable ($)
5398 {
5399 my ($lang) = @_;
5401 my ($var, $value) = ($lang->lder, $lang->ld);
5402 # CCLD = $(CC).
5403 &define_variable ($lang->lder, $lang->ld, INTERNAL);
5404 # CCLINK = $(CCLD) blah blah...
5405 &define_variable ($lang->linker,
5406 ((var ('LIBTOOL') ? '$(LIBTOOL) --mode=link ' : '')
5407 . $lang->link),
5408 INTERNAL);
5409 }
5411 ################################################################
5413 # &check_trailing_slash ($WHERE, $LINE)
5414 # --------------------------------------
5415 # Return 1 iff $LINE ends with a slash.
5416 # Might modify $LINE.
5417 sub check_trailing_slash ($\$)
5418 {
5419 my ($where, $line) = @_;
5421 # Ignore `##' lines.
5422 return 0 if $$line =~ /$IGNORE_PATTERN/o;
5424 # Catch and fix a common error.
5425 msg "syntax", $where, "whitespace following trailing backslash"
5426 if $$line =~ s/\\\s+\n$/\\\n/;
5428 return $$line =~ /\\$/;
5429 }
5432 # &read_am_file ($AMFILE, $WHERE)
5433 # -------------------------------
5434 # Read Makefile.am and set up %contents. Simultaneously copy lines
5435 # from Makefile.am into $output_trailer, or define variables as
5436 # appropriate. NOTE we put rules in the trailer section. We want
5437 # user rules to come after our generated stuff.
5438 sub read_am_file ($$)
5439 {
5440 my ($amfile, $where) = @_;
5442 my $am_file = new Automake::XFile ("< $amfile");
5443 verb "reading $amfile";
5445 # Keep track of the youngest output dependency.
5446 my $mtime = mtime $amfile;
5447 $output_deps_greatest_timestamp = $mtime
5448 if $mtime > $output_deps_greatest_timestamp;
5450 my $spacing = '';
5451 my $comment = '';
5452 my $blank = 0;
5453 my $saw_bk = 0;
5455 use constant IN_VAR_DEF => 0;
5456 use constant IN_RULE_DEF => 1;
5457 use constant IN_COMMENT => 2;
5458 my $prev_state = IN_RULE_DEF;
5460 while ($_ = $am_file->getline)
5461 {
5462 $where->set ("$amfile:$.");
5463 if (/$IGNORE_PATTERN/o)
5464 {
5465 # Merely delete comments beginning with two hashes.
5466 }
5467 elsif (/$WHITE_PATTERN/o)
5468 {
5469 error $where, "blank line following trailing backslash"
5470 if $saw_bk;
5471 # Stick a single white line before the incoming macro or rule.
5472 $spacing = "\n";
5473 $blank = 1;
5474 # Flush all comments seen so far.
5475 if ($comment ne '')
5476 {
5477 $output_vars .= $comment;
5478 $comment = '';
5479 }
5480 }
5481 elsif (/$COMMENT_PATTERN/o)
5482 {
5483 # Stick comments before the incoming macro or rule. Make
5484 # sure a blank line precedes the first block of comments.
5485 $spacing = "\n" unless $blank;
5486 $blank = 1;
5487 $comment .= $spacing . $_;
5488 $spacing = '';
5489 $prev_state = IN_COMMENT;
5490 }
5491 else
5492 {
5493 last;
5494 }
5495 $saw_bk = check_trailing_slash ($where, $_);
5496 }
5498 # We save the conditional stack on entry, and then check to make
5499 # sure it is the same on exit. This lets us conditionally include
5500 # other files.
5501 my @saved_cond_stack = @cond_stack;
5502 my $cond = new Automake::Condition (@cond_stack);
5504 my $last_var_name = '';
5505 my $last_var_type = '';
5506 my $last_var_value = '';
5507 my $last_where;
5508 # FIXME: shouldn't use $_ in this loop; it is too big.
5509 while ($_)
5510 {
5511 $where->set ("$amfile:$.");
5513 # Make sure the line is \n-terminated.
5514 chomp;
5515 $_ .= "\n";
5517 # Don't look at MAINTAINER_MODE_TRUE here. That shouldn't be
5518 # used by users. @MAINT@ is an anachronism now.
5519 $_ =~ s/\@MAINT\@//g
5520 unless $seen_maint_mode;
5522 my $new_saw_bk = check_trailing_slash ($where, $_);
5524 if (/$IGNORE_PATTERN/o)
5525 {
5526 # Merely delete comments beginning with two hashes.
5527 }
5528 elsif (/$WHITE_PATTERN/o)
5529 {
5530 # Stick a single white line before the incoming macro or rule.
5531 $spacing = "\n";
5532 error $where, "blank line following trailing backslash"
5533 if $saw_bk;
5534 }
5535 elsif (/$COMMENT_PATTERN/o)
5536 {
5537 # Stick comments before the incoming macro or rule.
5538 $comment .= $spacing . $_;
5539 $spacing = '';
5540 error $where, "comment following trailing backslash"
5541 if $saw_bk && $comment eq '';
5542 $prev_state = IN_COMMENT;
5543 }
5544 elsif ($saw_bk)
5545 {
5546 if ($prev_state == IN_RULE_DEF)
5547 {
5548 my $cond = new Automake::Condition @cond_stack;
5549 $output_trailer .= $cond->subst_string;
5550 $output_trailer .= $_;
5551 }
5552 elsif ($prev_state == IN_COMMENT)
5553 {
5554 # If the line doesn't start with a `#', add it.
5555 # We do this because a continued comment like
5556 # # A = foo \
5557 # bar \
5558 # baz
5559 # is not portable. BSD make doesn't honor
5560 # escaped newlines in comments.
5561 s/^#?/#/;
5562 $comment .= $spacing . $_;
5563 }
5564 else # $prev_state == IN_VAR_DEF
5565 {
5566 $last_var_value .= ' '
5567 unless $last_var_value =~ /\s$/;
5568 $last_var_value .= $_;
5570 if (!/\\$/)
5571 {
5572 Automake::Variable::define ($last_var_name, VAR_MAKEFILE,
5573 $last_var_type, $cond,
5574 $last_var_value, $comment,
5575 $last_where, VAR_ASIS)
5576 if $cond != FALSE;
5577 $comment = $spacing = '';
5578 }
5579 }
5580 }
5582 elsif (/$IF_PATTERN/o)
5583 {
5584 $cond = cond_stack_if ($1, $2, $where);
5585 }
5586 elsif (/$ELSE_PATTERN/o)
5587 {
5588 $cond = cond_stack_else ($1, $2, $where);
5589 }
5590 elsif (/$ENDIF_PATTERN/o)
5591 {
5592 $cond = cond_stack_endif ($1, $2, $where);
5593 }
5595 elsif (/$RULE_PATTERN/o)
5596 {
5597 # Found a rule.
5598 $prev_state = IN_RULE_DEF;
5600 # For now we have to output all definitions of user rules
5601 # and can't diagnose duplicates (see the comment in
5602 # rule_define). So we go on and ignore the return value.
5603 Automake::Rule::define ($1, $amfile, RULE_USER, $cond, $where);
5605 check_variable_expansions ($_, $where);
5607 $output_trailer .= $comment . $spacing;
5608 my $cond = new Automake::Condition @cond_stack;
5609 $output_trailer .= $cond->subst_string;
5610 $output_trailer .= $_;
5611 $comment = $spacing = '';
5612 }
5613 elsif (/$ASSIGNMENT_PATTERN/o)
5614 {
5615 # Found a macro definition.
5616 $prev_state = IN_VAR_DEF;
5617 $last_var_name = $1;
5618 $last_var_type = $2;
5619 $last_var_value = $3;
5620 $last_where = $where->clone;
5621 if ($3 ne '' && substr ($3, -1) eq "\\")
5622 {
5623 # We preserve the `\' because otherwise the long lines
5624 # that are generated will be truncated by broken
5625 # `sed's.
5626 $last_var_value = $3 . "\n";
5627 }
5629 if (!/\\$/)
5630 {
5631 Automake::Variable::define ($last_var_name, VAR_MAKEFILE,
5632 $last_var_type, $cond,
5633 $last_var_value, $comment,
5634 $last_where, VAR_ASIS)
5635 if $cond != FALSE;
5636 $comment = $spacing = '';
5637 }
5638 }
5639 elsif (/$INCLUDE_PATTERN/o)
5640 {
5641 my $path = $1;
5643 if ($path =~ s/^\$\(top_srcdir\)\///)
5644 {
5645 push (@include_stack, "\$\(top_srcdir\)/$path");
5646 # Distribute any included file.
5648 # Always use the $(top_srcdir) prefix in DIST_COMMON,
5649 # otherwise OSF make will implicitly copy the included
5650 # file in the build tree during `make distdir' to satisfy
5651 # the dependency.
5652 # (subdircond2.test and subdircond3.test will fail.)
5653 push_dist_common ("\$\(top_srcdir\)/$path");
5654 }
5655 else
5656 {
5657 $path =~ s/\$\(srcdir\)\///;
5658 push (@include_stack, "\$\(srcdir\)/$path");
5659 # Always use the $(srcdir) prefix in DIST_COMMON,
5660 # otherwise OSF make will implicitly copy the included
5661 # file in the build tree during `make distdir' to satisfy
5662 # the dependency.
5663 # (subdircond2.test and subdircond3.test will fail.)
5664 push_dist_common ("\$\(srcdir\)/$path");
5665 $path = $relative_dir . "/" . $path if $relative_dir ne '.';
5666 }
5667 $where->push_context ("`$path' included from here");
5668 &read_am_file ($path, $where);
5669 $where->pop_context;
5670 }
5671 else
5672 {
5673 # This isn't an error; it is probably a continued rule.
5674 # In fact, this is what we assume.
5675 $prev_state = IN_RULE_DEF;
5676 check_variable_expansions ($_, $where);
5677 $output_trailer .= $comment . $spacing;
5678 my $cond = new Automake::Condition @cond_stack;
5679 $output_trailer .= $cond->subst_string;
5680 $output_trailer .= $_;
5681 $comment = $spacing = '';
5682 error $where, "`#' comment at start of rule is unportable"
5683 if $_ =~ /^\t\s*\#/;
5684 }
5686 $saw_bk = $new_saw_bk;
5687 $_ = $am_file->getline;
5688 }
5690 $output_trailer .= $comment;
5692 error ($where, "trailing backslash on last line")
5693 if $saw_bk;
5695 error ($where, (@cond_stack ? "unterminated conditionals: @cond_stack"
5696 : "too many conditionals closed in include file"))
5697 if "@saved_cond_stack" ne "@cond_stack";
5698 }
5701 # define_standard_variables ()
5702 # ----------------------------
5703 # A helper for read_main_am_file which initializes configure variables
5704 # and variables from header-vars.am.
5705 sub define_standard_variables
5706 {
5707 my $saved_output_vars = $output_vars;
5708 my ($comments, undef, $rules) =
5709 file_contents_internal (1, "$libdir/am/header-vars.am",
5710 new Automake::Location);
5712 foreach my $var (sort keys %configure_vars)
5713 {
5714 &define_configure_variable ($var);
5715 }
5717 $output_vars .= $comments . $rules;
5718 }
5720 # Read main am file.
5721 sub read_main_am_file
5722 {
5723 my ($amfile) = @_;
5725 # This supports the strange variable tricks we are about to play.
5726 prog_error (macros_dump () . "variable defined before read_main_am_file")
5727 if (scalar (variables) > 0);
5729 # Generate copyright header for generated Makefile.in.
5730 # We do discard the output of predefined variables, handled below.
5731 $output_vars = ("# $in_file_name generated by automake "
5732 . $VERSION . " from $am_file_name.\n");
5733 $output_vars .= '# ' . subst ('configure_input') . "\n";
5734 $output_vars .= $gen_copyright;
5736 # We want to predefine as many variables as possible. This lets
5737 # the user set them with `+=' in Makefile.am.
5738 &define_standard_variables;
5740 # Read user file, which might override some of our values.
5741 &read_am_file ($amfile, new Automake::Location);
5742 }
5746 ################################################################
5748 # $FLATTENED
5749 # &flatten ($STRING)
5750 # ------------------
5751 # Flatten the $STRING and return the result.
5752 sub flatten
5753 {
5754 $_ = shift;
5756 s/\\\n//somg;
5757 s/\s+/ /g;
5758 s/^ //;
5759 s/ $//;
5761 return $_;
5762 }
5765 # @PARAGRAPHS
5766 # &make_paragraphs ($MAKEFILE, [%TRANSFORM])
5767 # ------------------------------------------
5768 # Load a $MAKEFILE, apply the %TRANSFORM, and return it as a list of
5769 # paragraphs.
5770 sub make_paragraphs ($%)
5771 {
5772 my ($file, %transform) = @_;
5774 # Complete %transform with global options and make it a Perl
5775 # $command.
5776 my $command =
5777 "s/$IGNORE_PATTERN//gm;"
5778 . transform (%transform,
5779 'CYGNUS' => !! option 'cygnus',
5780 'MAINTAINER-MODE'
5781 => $seen_maint_mode ? subst ('MAINTAINER_MODE_TRUE') : '',
5783 'BZIP2' => !! option 'dist-bzip2',
5784 'COMPRESS' => !! option 'dist-tarZ',
5785 'GZIP' => ! option 'no-dist-gzip',
5786 'SHAR' => !! option 'dist-shar',
5787 'ZIP' => !! option 'dist-zip',
5789 'INSTALL-INFO' => ! option 'no-installinfo',
5790 'INSTALL-MAN' => ! option 'no-installman',
5791 'CK-NEWS' => !! option 'check-news',
5793 'SUBDIRS' => !! var ('SUBDIRS'),
5794 'TOPDIR' => backname ($relative_dir),
5795 'TOPDIR_P' => $relative_dir eq '.',
5797 'BUILD' => $seen_canonical == AC_CANONICAL_SYSTEM,
5798 'HOST' => $seen_canonical,
5799 'TARGET' => $seen_canonical == AC_CANONICAL_SYSTEM,
5801 'LIBTOOL' => !! var ('LIBTOOL'))
5802 # We don't need more than two consecutive new-lines.
5803 . 's/\n{3,}/\n\n/g';
5805 # Swallow the file and apply the COMMAND.
5806 my $fc_file = new Automake::XFile "< $file";
5807 # Looks stupid?
5808 verb "reading $file";
5809 my $saved_dollar_slash = $/;
5810 undef $/;
5811 $_ = $fc_file->getline;
5812 $/ = $saved_dollar_slash;
5813 eval $command;
5814 $fc_file->close;
5815 my $content = $_;
5817 # Split at unescaped new lines.
5818 my @lines = split (/(?<!\\)\n/, $content);
5819 my @res;
5821 while (defined ($_ = shift @lines))
5822 {
5823 my $paragraph = "$_";
5824 # If we are a rule, eat as long as we start with a tab.
5825 if (/$RULE_PATTERN/smo)
5826 {
5827 while (defined ($_ = shift @lines) && $_ =~ /^\t/)
5828 {
5829 $paragraph .= "\n$_";
5830 }
5831 unshift (@lines, $_);
5832 }
5834 # If we are a comments, eat as much comments as you can.
5835 elsif (/$COMMENT_PATTERN/smo)
5836 {
5837 while (defined ($_ = shift @lines)
5838 && $_ =~ /$COMMENT_PATTERN/smo)
5839 {
5840 $paragraph .= "\n$_";
5841 }
5842 unshift (@lines, $_);
5843 }
5845 push @res, $paragraph;
5846 $paragraph = '';
5847 }
5849 return @res;
5850 }
5854 # ($COMMENT, $VARIABLES, $RULES)
5855 # &file_contents_internal ($IS_AM, $FILE, $WHERE, [%TRANSFORM])
5856 # -------------------------------------------------------------
5857 # Return contents of a file from $libdir/am, automatically skipping
5858 # macros or rules which are already known. $IS_AM iff the caller is
5859 # reading an Automake file (as opposed to the user's Makefile.am).
5860 sub file_contents_internal ($$$%)
5861 {
5862 my ($is_am, $file, $where, %transform) = @_;
5864 $where->set ($file);
5866 my $result_vars = '';
5867 my $result_rules = '';
5868 my $comment = '';
5869 my $spacing = '';
5871 # The following flags are used to track rules spanning across
5872 # multiple paragraphs.
5873 my $is_rule = 0; # 1 if we are processing a rule.
5874 my $discard_rule = 0; # 1 if the current rule should not be output.
5876 # We save the conditional stack on entry, and then check to make
5877 # sure it is the same on exit. This lets us conditionally include
5878 # other files.
5879 my @saved_cond_stack = @cond_stack;
5880 my $cond = new Automake::Condition (@cond_stack);
5882 foreach (make_paragraphs ($file, %transform))
5883 {
5884 # FIXME: no line number available.
5885 $where->set ($file);
5887 # Sanity checks.
5888 error $where, "blank line following trailing backslash:\n$_"
5889 if /\\$/;
5890 error $where, "comment following trailing backslash:\n$_"
5891 if /\\#/;
5893 if (/^$/)
5894 {
5895 $is_rule = 0;
5896 # Stick empty line before the incoming macro or rule.
5897 $spacing = "\n";
5898 }
5899 elsif (/$COMMENT_PATTERN/mso)
5900 {
5901 $is_rule = 0;
5902 # Stick comments before the incoming macro or rule.
5903 $comment = "$_\n";
5904 }
5906 # Handle inclusion of other files.
5907 elsif (/$INCLUDE_PATTERN/o)
5908 {
5909 if ($cond != FALSE)
5910 {
5911 my $file = ($is_am ? "$libdir/am/" : '') . $1;
5912 $where->push_context ("`$file' included from here");
5913 # N-ary `.=' fails.
5914 my ($com, $vars, $rules)
5915 = file_contents_internal ($is_am, $file, $where, %transform);
5916 $where->pop_context;
5917 $comment .= $com;
5918 $result_vars .= $vars;
5919 $result_rules .= $rules;
5920 }
5921 }
5923 # Handling the conditionals.
5924 elsif (/$IF_PATTERN/o)
5925 {
5926 $cond = cond_stack_if ($1, $2, $file);
5927 }
5928 elsif (/$ELSE_PATTERN/o)
5929 {
5930 $cond = cond_stack_else ($1, $2, $file);
5931 }
5932 elsif (/$ENDIF_PATTERN/o)
5933 {
5934 $cond = cond_stack_endif ($1, $2, $file);
5935 }
5937 # Handling rules.
5938 elsif (/$RULE_PATTERN/mso)
5939 {
5940 $is_rule = 1;
5941 $discard_rule = 0;
5942 # Separate relationship from optional actions: the first
5943 # `new-line tab" not preceded by backslash (continuation
5944 # line).
5945 my $paragraph = $_;
5946 /^(.*?)(?:(?<!\\)\n(\t.*))?$/s;
5947 my ($relationship, $actions) = ($1, $2 || '');
5949 # Separate targets from dependencies: the first colon.
5950 $relationship =~ /^([^:]+\S+) *: *(.*)$/som;
5951 my ($targets, $dependencies) = ($1, $2);
5952 # Remove the escaped new lines.
5953 # I don't know why, but I have to use a tmp $flat_deps.
5954 my $flat_deps = &flatten ($dependencies);
5955 my @deps = split (' ', $flat_deps);
5957 foreach (split (' ' , $targets))
5958 {
5959 # FIXME: 1. We are not robust to people defining several targets
5960 # at once, only some of them being in %dependencies. The
5961 # actions from the targets in %dependencies are usually generated
5962 # from the content of %actions, but if some targets in $targets
5963 # are not in %dependencies the ELSE branch will output
5964 # a rule for all $targets (i.e. the targets which are both
5965 # in %dependencies and $targets will have two rules).
5967 # FIXME: 2. The logic here is not able to output a
5968 # multi-paragraph rule several time (e.g. for each condition
5969 # it is defined for) because it only knows the first paragraph.
5971 # FIXME: 3. We are not robust to people defining a subset
5972 # of a previously defined "multiple-target" rule. E.g.
5973 # `foo:' after `foo bar:'.
5975 # Output only if not in FALSE.
5976 if (defined $dependencies{$_} && $cond != FALSE)
5977 {
5978 &depend ($_, @deps);
5979 if ($actions{$_})
5980 {
5981 $actions{$_} .= "\n$actions" if $actions;
5982 }
5983 else
5984 {
5985 $actions{$_} = $actions;
5986 }
5987 }
5988 else
5989 {
5990 # Free-lance dependency. Output the rule for all the
5991 # targets instead of one by one.
5992 my @undefined_conds =
5993 Automake::Rule::define ($targets, $file,
5994 $is_am ? RULE_AUTOMAKE : RULE_USER,
5995 $cond, $where);
5996 for my $undefined_cond (@undefined_conds)
5997 {
5998 my $condparagraph = $paragraph;
5999 $condparagraph =~ s/^/$undefined_cond->subst_string/gme;
6000 $result_rules .= "$spacing$comment$condparagraph\n";
6001 }
6002 if (scalar @undefined_conds == 0)
6003 {
6004 # Remember to discard next paragraphs
6005 # if they belong to this rule.
6006 # (but see also FIXME: #2 above.)
6007 $discard_rule = 1;
6008 }
6009 $comment = $spacing = '';
6010 last;
6011 }
6012 }
6013 }
6015 elsif (/$ASSIGNMENT_PATTERN/mso)
6016 {
6017 my ($var, $type, $val) = ($1, $2, $3);
6018 error $where, "variable `$var' with trailing backslash"
6019 if /\\$/;
6021 $is_rule = 0;
6023 Automake::Variable::define ($var,
6024 $is_am ? VAR_AUTOMAKE : VAR_MAKEFILE,
6025 $type, $cond, $val, $comment, $where,
6026 VAR_ASIS)
6027 if $cond != FALSE;
6029 $comment = $spacing = '';
6030 }
6031 else
6032 {
6033 # This isn't an error; it is probably some tokens which
6034 # configure is supposed to replace, such as `@SET-MAKE@',
6035 # or some part of a rule cut by an if/endif.
6036 if (! $cond->false && ! ($is_rule && $discard_rule))
6037 {
6038 s/^/$cond->subst_string/gme;
6039 $result_rules .= "$spacing$comment$_\n";
6040 }
6041 $comment = $spacing = '';
6042 }
6043 }
6045 error ($where, @cond_stack ?
6046 "unterminated conditionals: @cond_stack" :
6047 "too many conditionals closed in include file")
6048 if "@saved_cond_stack" ne "@cond_stack";
6050 return ($comment, $result_vars, $result_rules);
6051 }
6054 # $CONTENTS
6055 # &file_contents ($BASENAME, $WHERE, [%TRANSFORM])
6056 # ------------------------------------------------
6057 # Return contents of a file from $libdir/am, automatically skipping
6058 # macros or rules which are already known.
6059 sub file_contents ($$%)
6060 {
6061 my ($basename, $where, %transform) = @_;
6062 my ($comments, $variables, $rules) =
6063 file_contents_internal (1, "$libdir/am/$basename.am", $where,
6064 %transform);
6065 return "$comments$variables$rules";
6066 }
6069 # $REGEXP
6070 # &transform (%PAIRS)
6071 # -------------------
6072 # For each ($TOKEN, $VAL) in %PAIRS produce a replacement expression
6073 # suitable for file_contents which:
6074 # - replaces %$TOKEN% with $VAL,
6075 # - enables/disables ?$TOKEN? and ?!$TOKEN?,
6076 # - replaces %?$TOKEN% with TRUE or FALSE.
6077 sub transform (%)
6078 {
6079 my (%pairs) = @_;
6080 my $result = '';
6082 while (my ($token, $val) = each %pairs)
6083 {
6084 $result .= "s/\Q%$token%\E/\Q$val\E/gm;";
6085 if ($val)
6086 {
6087 $result .= "s/\Q?$token?\E//gm;s/^.*\Q?!$token?\E.*\\n//gm;";
6088 $result .= "s/\Q%?$token%\E/TRUE/gm;";
6089 }
6090 else
6091 {
6092 $result .= "s/\Q?!$token?\E//gm;s/^.*\Q?$token?\E.*\\n//gm;";
6093 $result .= "s/\Q%?$token%\E/FALSE/gm;";
6094 }
6095 }
6097 return $result;
6098 }
6101 # &append_exeext ($MACRO)
6102 # -----------------------
6103 # Macro is an Automake magic macro which primary is PROGRAMS, e.g.
6104 # bin_PROGRAMS. Make sure these programs have $(EXEEXT) appended.
6105 sub append_exeext ($)
6106 {
6107 my ($macro) = @_;
6109 prog_error "append_exeext ($macro)"
6110 unless $macro =~ /_PROGRAMS$/;
6112 transform_variable_recursively
6113 ($macro, $macro, 'am__EXEEXT', 0, INTERNAL,
6114 sub {
6115 my ($subvar, $val, $cond, $full_cond) = @_;
6116 # Append $(EXEEXT) unless the user did it already, or it's a
6117 # @substitution@.
6118 $val .= '$(EXEEXT)' unless $val =~ /(?:\$\(EXEEXT\)$|^[@]\w+[@]$)/;
6119 return $val;
6120 });
6121 }
6124 # @PREFIX
6125 # &am_primary_prefixes ($PRIMARY, $CAN_DIST, @PREFIXES)
6126 # -----------------------------------------------------
6127 # Find all variable prefixes that are used for install directories. A
6128 # prefix `zar' qualifies iff:
6129 #
6130 # * `zardir' is a variable.
6131 # * `zar_PRIMARY' is a variable.
6132 #
6133 # As a side effect, it looks for misspellings. It is an error to have
6134 # a variable ending in a "reserved" suffix whose prefix is unknown, e.g.
6135 # "bin_PROGRAMS". However, unusual prefixes are allowed if a variable
6136 # of the same name (with "dir" appended) exists. For instance, if the
6137 # variable "zardir" is defined, then "zar_PROGRAMS" becomes valid.
6138 # This is to provide a little extra flexibility in those cases which
6139 # need it.
6140 sub am_primary_prefixes ($$@)
6141 {
6142 my ($primary, $can_dist, @prefixes) = @_;
6144 local $_;
6145 my %valid = map { $_ => 0 } @prefixes;
6146 $valid{'EXTRA'} = 0;
6147 foreach my $var (variables)
6148 {
6149 # Automake is allowed to define variables that look like primaries
6150 # but which aren't. E.g. INSTALL_sh_DATA.
6151 # Autoconf can also define variables like INSTALL_DATA, so
6152 # ignore all configure variables (at least those which are not
6153 # redefined in Makefile.am).
6154 # FIXME: We should make sure that these variables are not
6155 # conditionally defined (or else adjust the condition below).
6156 my $def = $var->def (TRUE);
6157 next if $def && $def->owner != VAR_MAKEFILE;
6159 my $varname = $var->name;
6161 if ($varname =~ /^(nobase_)?(dist_|nodist_)?(.*)_$primary$/)
6162 {
6163 my ($base, $dist, $X) = ($1 || '', $2 || '', $3 || '');
6164 if ($dist ne '' && ! $can_dist)
6165 {
6166 err_var ($var,
6167 "invalid variable `$varname': `dist' is forbidden");
6168 }
6169 # Standard directories must be explicitly allowed.
6170 elsif (! defined $valid{$X} && exists $standard_prefix{$X})
6171 {
6172 err_var ($var,
6173 "`${X}dir' is not a legitimate directory " .
6174 "for `$primary'");
6175 }
6176 # A not explicitly valid directory is allowed if Xdir is defined.
6177 elsif (! defined $valid{$X} &&
6178 $var->requires_variables ("`$varname' is used", "${X}dir"))
6179 {
6180 # Nothing to do. Any error message has been output
6181 # by $var->requires_variables.
6182 }
6183 else
6184 {
6185 # Ensure all extended prefixes are actually used.
6186 $valid{"$base$dist$X"} = 1;
6187 }
6188 }
6189 }
6191 # Return only those which are actually defined.
6192 return sort grep { var ($_ . '_' . $primary) } keys %valid;
6193 }
6196 # Handle `where_HOW' variable magic. Does all lookups, generates
6197 # install code, and possibly generates code to define the primary
6198 # variable. The first argument is the name of the .am file to munge,
6199 # the second argument is the primary variable (e.g. HEADERS), and all
6200 # subsequent arguments are possible installation locations.
6201 #
6202 # Returns list of [$location, $value] pairs, where
6203 # $value's are the values in all where_HOW variable, and $location
6204 # there associated location (the place here their parent variables were
6205 # defined).
6206 #
6207 # FIXME: this should be rewritten to be cleaner. It should be broken
6208 # up into multiple functions.
6209 #
6210 # Usage is: am_install_var (OPTION..., file, HOW, where...)
6211 sub am_install_var
6212 {
6213 my (@args) = @_;
6215 my $do_require = 1;
6216 my $can_dist = 0;
6217 my $default_dist = 0;
6218 while (@args)
6219 {
6220 if ($args[0] eq '-noextra')
6221 {
6222 $do_require = 0;
6223 }
6224 elsif ($args[0] eq '-candist')
6225 {
6226 $can_dist = 1;
6227 }
6228 elsif ($args[0] eq '-defaultdist')
6229 {
6230 $default_dist = 1;
6231 $can_dist = 1;
6232 }
6233 elsif ($args[0] !~ /^-/)
6234 {
6235 last;
6236 }
6237 shift (@args);
6238 }
6240 my ($file, $primary, @prefix) = @args;
6242 # Now that configure substitutions are allowed in where_HOW
6243 # variables, it is an error to actually define the primary. We
6244 # allow `JAVA', as it is customarily used to mean the Java
6245 # interpreter. This is but one of several Java hacks. Similarly,
6246 # `PYTHON' is customarily used to mean the Python interpreter.
6247 reject_var $primary, "`$primary' is an anachronism"
6248 unless $primary eq 'JAVA' || $primary eq 'PYTHON';
6250 # Get the prefixes which are valid and actually used.
6251 @prefix = am_primary_prefixes ($primary, $can_dist, @prefix);
6253 # If a primary includes a configure substitution, then the EXTRA_
6254 # form is required. Otherwise we can't properly do our job.
6255 my $require_extra;
6257 my @used = ();
6258 my @result = ();
6260 # True if the iteration is the first one. Used for instance to
6261 # output parts of the associated file only once.
6262 my $first = 1;
6263 foreach my $X (@prefix)
6264 {
6265 my $nodir_name = $X;
6266 my $one_name = $X . '_' . $primary;
6267 my $one_var = var $one_name;
6269 my $strip_subdir = 1;
6270 # If subdir prefix should be preserved, do so.
6271 if ($nodir_name =~ /^nobase_/)
6272 {
6273 $strip_subdir = 0;
6274 $nodir_name =~ s/^nobase_//;
6275 }
6277 # If files should be distributed, do so.
6278 my $dist_p = 0;
6279 if ($can_dist)
6280 {
6281 $dist_p = (($default_dist && $nodir_name !~ /^nodist_/)
6282 || (! $default_dist && $nodir_name =~ /^dist_/));
6283 $nodir_name =~ s/^(dist|nodist)_//;
6284 }
6287 # Use the location of the currently processed variable.
6288 # We are not processing a particular condition, so pick the first
6289 # available.
6290 my $tmpcond = $one_var->conditions->one_cond;
6291 my $where = $one_var->rdef ($tmpcond)->location->clone;
6293 # Append actual contents of where_PRIMARY variable to
6294 # @result, skipping @substitutions@.
6295 foreach my $locvals ($one_var->value_as_list_recursive (location => 1))
6296 {
6297 my ($loc, $value) = @$locvals;
6298 # Skip configure substitutions.
6299 if ($value =~ /^\@.*\@$/)
6300 {
6301 if ($nodir_name eq 'EXTRA')
6302 {
6303 error ($where,
6304 "`$one_name' contains configure substitution, "
6305 . "but shouldn't");
6306 }
6307 # Check here to make sure variables defined in
6308 # configure.ac do not imply that EXTRA_PRIMARY
6309 # must be defined.
6310 elsif (! defined $configure_vars{$one_name})
6311 {
6312 $require_extra = $one_name
6313 if $do_require;
6314 }
6315 }
6316 else
6317 {
6318 push (@result, $locvals);
6319 }
6320 }
6321 # A blatant hack: we rewrite each _PROGRAMS primary to include
6322 # EXEEXT.
6323 append_exeext ($one_name)
6324 if $primary eq 'PROGRAMS';
6325 # "EXTRA" shouldn't be used when generating clean targets,
6326 # all, or install targets. We used to warn if EXTRA_FOO was
6327 # defined uselessly, but this was annoying.
6328 next
6329 if $nodir_name eq 'EXTRA';
6331 if ($nodir_name eq 'check')
6332 {
6333 push (@check, '$(' . $one_name . ')');
6334 }
6335 else
6336 {
6337 push (@used, '$(' . $one_name . ')');
6338 }
6340 # Is this to be installed?
6341 my $install_p = $nodir_name ne 'noinst' && $nodir_name ne 'check';
6343 # If so, with install-exec? (or install-data?).
6344 my $exec_p = ($nodir_name =~ /$EXEC_DIR_PATTERN/o);
6346 my $check_options_p = $install_p && !! option 'std-options';
6348 # Use the location of the currently processed variable as context.
6349 $where->push_context ("while processing `$one_name'");
6351 # The variable containing all file to distribute.
6352 my $distvar = "\$($one_name)";
6353 $distvar = shadow_unconditionally ($one_name, $where)
6354 if ($dist_p && $one_var->has_conditional_contents);
6356 # Singular form of $PRIMARY.
6357 (my $one_primary = $primary) =~ s/S$//;
6358 $output_rules .= &file_contents ($file, $where,
6359 FIRST => $first,
6361 PRIMARY => $primary,
6362 ONE_PRIMARY => $one_primary,
6363 DIR => $X,
6364 NDIR => $nodir_name,
6365 BASE => $strip_subdir,
6367 EXEC => $exec_p,
6368 INSTALL => $install_p,
6369 DIST => $dist_p,
6370 DISTVAR => $distvar,
6371 'CK-OPTS' => $check_options_p);
6373 $first = 0;
6374 }
6376 # The JAVA variable is used as the name of the Java interpreter.
6377 # The PYTHON variable is used as the name of the Python interpreter.
6378 if (@used && $primary ne 'JAVA' && $primary ne 'PYTHON')
6379 {
6380 # Define it.
6381 define_pretty_variable ($primary, TRUE, INTERNAL, @used);
6382 $output_vars .= "\n";
6383 }
6385 err_var ($require_extra,
6386 "`$require_extra' contains configure substitution,\n"
6387 . "but `EXTRA_$primary' not defined")
6388 if ($require_extra && ! var ('EXTRA_' . $primary));
6390 # Push here because PRIMARY might be configure time determined.
6391 push (@all, '$(' . $primary . ')')
6392 if @used && $primary ne 'JAVA' && $primary ne 'PYTHON';
6394 # Make the result unique. This lets the user use conditionals in
6395 # a natural way, but still lets us program lazily -- we don't have
6396 # to worry about handling a particular object more than once.
6397 # We will keep only one location per object.
6398 my %result = ();
6399 for my $pair (@result)
6400 {
6401 my ($loc, $val) = @$pair;
6402 $result{$val} = $loc;
6403 }
6404 my @l = sort keys %result;
6405 return map { [$result{$_}->clone, $_] } @l;
6406 }
6409 ################################################################
6411 # Each key in this hash is the name of a directory holding a
6412 # Makefile.in. These variables are local to `is_make_dir'.
6413 my %make_dirs = ();
6414 my $make_dirs_set = 0;
6416 sub is_make_dir
6417 {
6418 my ($dir) = @_;
6419 if (! $make_dirs_set)
6420 {
6421 foreach my $iter (@configure_input_files)
6422 {
6423 $make_dirs{dirname ($iter)} = 1;
6424 }
6425 # We also want to notice Makefile.in's.
6426 foreach my $iter (@other_input_files)
6427 {
6428 if ($iter =~ /Makefile\.in$/)
6429 {
6430 $make_dirs{dirname ($iter)} = 1;
6431 }
6432 }
6433 $make_dirs_set = 1;
6434 }
6435 return defined $make_dirs{$dir};
6436 }
6438 ################################################################
6440 # This variable is local to the "require file" set of functions.
6441 my @require_file_paths = ();
6444 # &maybe_push_required_file ($DIR, $FILE, $FULLFILE)
6445 # --------------------------------------------------
6446 # See if we want to push this file onto dist_common. This function
6447 # encodes the rules for deciding when to do so.
6448 sub maybe_push_required_file
6449 {
6450 my ($dir, $file, $fullfile) = @_;
6452 if ($dir eq $relative_dir)
6453 {
6454 push_dist_common ($file);
6455 return 1;
6456 }
6457 elsif ($relative_dir eq '.' && ! &is_make_dir ($dir))
6458 {
6459 # If we are doing the topmost directory, and the file is in a
6460 # subdir which does not have a Makefile, then we distribute it
6461 # here.
6463 # If a required file is above the source tree, it is important
6464 # to prefix it with `$(srcdir)' so that no VPATH search is
6465 # performed. Otherwise problems occur with Make implementations
6466 # that rewrite and simplify rules whose dependencies are found in a
6467 # VPATH location. Here is an example with OSF1/Tru64 Make.
6468 #
6469 # % cat Makefile
6470 # VPATH = sub
6471 # distdir: ../a
6472 # echo ../a
6473 # % ls
6474 # Makefile a
6475 # % make
6476 # echo a
6477 # a
6478 #
6479 # Dependency `../a' was found in `sub/../a', but this make
6480 # implementation simplified it as `a'. (Note that the sub/
6481 # directory does not even exist.)
6482 #
6483 # This kind of VPATH rewriting seems hard to cancel. The
6484 # distdir.am hack against VPATH rewriting works only when no
6485 # simplification is done, i.e., for dependencies which are in
6486 # subdirectories, not in enclosing directories. Hence, in
6487 # the latter case we use a full path to make sure no VPATH
6488 # search occurs.
6489 $fullfile = '$(srcdir)/' . $fullfile
6490 if $dir =~ m,^\.\.(?:$|/),;
6492 push_dist_common ($fullfile);
6493 return 1;
6494 }
6495 return 0;
6496 }
6499 # &require_file_internal ($WHERE, $MYSTRICT, @FILES)
6500 # --------------------------------------------------
6501 # Verify that the file must exist in the current directory.
6502 # $MYSTRICT is the strictness level at which this file becomes required.
6503 #
6504 # Must set require_file_paths before calling this function.
6505 # require_file_paths is set to hold a single directory (the one in
6506 # which the first file was found) before return.
6507 sub require_file_internal ($$@)
6508 {
6509 my ($where, $mystrict, @files) = @_;
6511 foreach my $file (@files)
6512 {
6513 my $fullfile;
6514 my $errdir;
6515 my $errfile;
6516 my $save_dir;
6518 my $found_it = 0;
6519 my $dangling_sym = 0;
6520 foreach my $dir (@require_file_paths)
6521 {
6522 $fullfile = $dir . "/" . $file;
6523 $errdir = $dir unless $errdir;
6525 # Use different name for "error filename". Otherwise on
6526 # an error the bad file will be reported as e.g.
6527 # `../../install-sh' when using the default
6528 # config_aux_path.
6529 $errfile = $errdir . '/' . $file;
6531 if (-l $fullfile && ! -f $fullfile)
6532 {
6533 $dangling_sym = 1;
6534 last;
6535 }
6536 elsif (-f $fullfile)
6537 {
6538 $found_it = 1;
6539 maybe_push_required_file ($dir, $file, $fullfile);
6540 $save_dir = $dir;
6541 last;
6542 }
6543 }
6545 # `--force-missing' only has an effect if `--add-missing' is
6546 # specified.
6547 if ($found_it && (! $add_missing || ! $force_missing))
6548 {
6549 # Prune the path list.
6550 @require_file_paths = $save_dir;
6551 }
6552 else
6553 {
6554 # If we've already looked for it, we're done. You might
6555 # wonder why we don't do this before searching for the
6556 # file. If we do that, then something like
6557 # AC_OUTPUT(subdir/foo foo) will fail to put foo.in into
6558 # DIST_COMMON.
6559 if (! $found_it)
6560 {
6561 next if defined $require_file_found{$fullfile};
6562 $require_file_found{$fullfile} = 1;
6563 }
6565 if ($strictness >= $mystrict)
6566 {
6567 if ($dangling_sym && $add_missing)
6568 {
6569 unlink ($fullfile);
6570 }
6572 my $trailer = '';
6573 my $suppress = 0;
6575 # Only install missing files according to our desired
6576 # strictness level.
6577 my $message = "required file `$errfile' not found";
6578 if ($add_missing)
6579 {
6580 if (-f ("$libdir/$file"))
6581 {
6582 $suppress = 1;
6584 # Install the missing file. Symlink if we
6585 # can, copy if we must. Note: delete the file
6586 # first, in case it is a dangling symlink.
6587 $message = "installing `$errfile'";
6588 # Windows Perl will hang if we try to delete a
6589 # file that doesn't exist.
6590 unlink ($errfile) if -f $errfile;
6591 if ($symlink_exists && ! $copy_missing)
6592 {
6593 if (! symlink ("$libdir/$file", $errfile))
6594 {
6595 $suppress = 0;
6596 $trailer = "; error while making link: $!";
6597 }
6598 }
6599 elsif (system ('cp', "$libdir/$file", $errfile))
6600 {
6601 $suppress = 0;
6602 $trailer = "\n error while copying";
6603 }
6604 }
6606 if (! maybe_push_required_file (dirname ($errfile),
6607 $file, $errfile))
6608 {
6609 if (! $found_it)
6610 {
6611 # We have added the file but could not push it
6612 # into DIST_COMMON (probably because this is
6613 # an auxiliary file and we are not processing
6614 # the top level Makefile). This is unfortunate,
6615 # since it means we are using a file which is not
6616 # distributed!
6618 # Get Automake to be run again: on the second
6619 # run the file will be found, and pushed into
6620 # the toplevel DIST_COMMON automatically.
6621 $automake_needs_to_reprocess_all_files = 1;
6622 }
6623 }
6625 # Prune the path list.
6626 @require_file_paths = &dirname ($errfile);
6627 }
6629 # If --force-missing was specified, and we have
6630 # actually found the file, then do nothing.
6631 next
6632 if $found_it && $force_missing;
6634 # If we couldn' install the file, but it is a target in
6635 # the Makefile, don't print anything. This allows files
6636 # like README, AUTHORS, or THANKS to be generated.
6637 next
6638 if !$suppress && rule $file;
6640 msg ($suppress ? 'note' : 'error', $where, "$message$trailer");
6641 }
6642 }
6643 }
6644 }
6646 # &require_file ($WHERE, $MYSTRICT, @FILES)
6647 # -----------------------------------------
6648 sub require_file ($$@)
6649 {
6650 my ($where, $mystrict, @files) = @_;
6651 @require_file_paths = $relative_dir;
6652 require_file_internal ($where, $mystrict, @files);
6653 }
6655 # &require_file_with_macro ($COND, $MACRO, $MYSTRICT, @FILES)
6656 # -----------------------------------------------------------
6657 sub require_file_with_macro ($$$@)
6658 {
6659 my ($cond, $macro, $mystrict, @files) = @_;
6660 $macro = rvar ($macro) unless ref $macro;
6661 require_file ($macro->rdef ($cond)->location, $mystrict, @files);
6662 }
6665 # &require_conf_file ($WHERE, $MYSTRICT, @FILES)
6666 # ----------------------------------------------
6667 # Looks in configuration path, as specified by AC_CONFIG_AUX_DIR.
6668 sub require_conf_file ($$@)
6669 {
6670 my ($where, $mystrict, @files) = @_;
6671 @require_file_paths = @config_aux_path;
6672 require_file_internal ($where, $mystrict, @files);
6673 my $dir = $require_file_paths[0];
6674 @config_aux_path = @require_file_paths;
6675 # Avoid unsightly '/.'s.
6676 $config_aux_dir = '$(top_srcdir)' . ($dir eq '.' ? "" : "/$dir");
6677 }
6680 # &require_conf_file_with_macro ($COND, $MACRO, $MYSTRICT, @FILES)
6681 # ----------------------------------------------------------------
6682 sub require_conf_file_with_macro ($$$@)
6683 {
6684 my ($cond, $macro, $mystrict, @files) = @_;
6685 require_conf_file (rvar ($macro)->rdef ($cond)->location,
6686 $mystrict, @files);
6687 }
6689 ################################################################
6691 # &require_build_directory ($DIRECTORY)
6692 # ------------------------------------
6693 # Emit rules to create $DIRECTORY if needed, and return
6694 # the file that any target requiring this directory should be made
6695 # dependent upon.
6696 sub require_build_directory ($)
6697 {
6698 my $directory = shift;
6699 my $dirstamp = "$directory/\$(am__dirstamp)";
6701 # Don't emit the rule twice.
6702 if (! defined $directory_map{$directory})
6703 {
6704 $directory_map{$directory} = 1;
6706 # Set a variable for the dirstamp basename.
6707 define_pretty_variable ('am__dirstamp', TRUE, INTERNAL,
6708 '$(am__leading_dot)dirstamp');
6710 # Directory must be removed by `make distclean'.
6711 $clean_files{$dirstamp} = DIST_CLEAN;
6713 $output_rules .= ("$dirstamp:\n"
6714 . "\t\@\$(mkdir_p) $directory\n"
6715 . "\t\@: > $dirstamp\n");
6716 }
6718 return $dirstamp;
6719 }
6721 # &require_build_directory_maybe ($FILE)
6722 # --------------------------------------
6723 # If $FILE lies in a subdirectory, emit a rule to create this
6724 # directory and return the file that $FILE should be made
6725 # dependent upon. Otherwise, just return the empty string.
6726 sub require_build_directory_maybe ($)
6727 {
6728 my $file = shift;
6729 my $directory = dirname ($file);
6731 if ($directory ne '.')
6732 {
6733 return require_build_directory ($directory);
6734 }
6735 else
6736 {
6737 return '';
6738 }
6739 }
6741 ################################################################
6743 # Push a list of files onto dist_common.
6744 sub push_dist_common
6745 {
6746 prog_error "push_dist_common run after handle_dist"
6747 if $handle_dist_run;
6748 Automake::Variable::define ('DIST_COMMON', VAR_AUTOMAKE, '+', TRUE, "@_",
6749 '', INTERNAL, VAR_PRETTY);
6750 }
6753 ################################################################
6755 # generate_makefile ($MAKEFILE_AM, $MAKEFILE_IN)
6756 # ----------------------------------------------
6757 # Generate a Makefile.in given the name of the corresponding Makefile and
6758 # the name of the file output by config.status.
6759 sub generate_makefile ($$)
6760 {
6761 my ($makefile_am, $makefile_in) = @_;
6763 # Reset all the Makefile.am related variables.
6764 initialize_per_input;
6766 # AUTOMAKE_OPTIONS can contains -W flags to disable or enable
6767 # warnings for this file. So hold any warning issued before
6768 # we have processed AUTOMAKE_OPTIONS.
6769 buffer_messages ('warning');
6771 # Name of input file ("Makefile.am") and output file
6772 # ("Makefile.in"). These have no directory components.
6773 $am_file_name = basename ($makefile_am);
6774 $in_file_name = basename ($makefile_in);
6776 # $OUTPUT is encoded. If it contains a ":" then the first element
6777 # is the real output file, and all remaining elements are input
6778 # files. We don't scan or otherwise deal with these input files,
6779 # other than to mark them as dependencies. See
6780 # &scan_autoconf_files for details.
6781 my ($makefile, @inputs) = split (/:/, $output_files{$makefile_in});
6783 $relative_dir = dirname ($makefile);
6784 $am_relative_dir = dirname ($makefile_am);
6786 read_main_am_file ($makefile_am);
6787 if (handle_options)
6788 {
6789 # Process buffered warnings.
6790 flush_messages;
6791 # Fatal error. Just return, so we can continue with next file.
6792 return;
6793 }
6794 # Process buffered warnings.
6795 flush_messages;
6797 # There are a few install-related variables that you should not define.
6798 foreach my $var ('PRE_INSTALL', 'POST_INSTALL', 'NORMAL_INSTALL')
6799 {
6800 my $v = var $var;
6801 if ($v)
6802 {
6803 my $def = $v->def (TRUE);
6804 prog_error "$var not defined in condition TRUE"
6805 unless $def;
6806 reject_var $var, "`$var' should not be defined"
6807 if $def->owner != VAR_AUTOMAKE;
6808 }
6809 }
6811 # Catch some obsolete variables.
6812 msg_var ('obsolete', 'INCLUDES',
6813 "`INCLUDES' is the old name for `AM_CPPFLAGS' (or `*_CPPFLAGS')")
6814 if var ('INCLUDES');
6816 # At the toplevel directory, we might need config.guess, config.sub
6817 # or libtool scripts (ltconfig and ltmain.sh).
6818 if ($relative_dir eq '.')
6819 {
6820 # AC_CANONICAL_HOST and AC_CANONICAL_SYSTEM need config.guess and
6821 # config.sub.
6822 require_conf_file ($canonical_location, FOREIGN,
6823 'config.guess', 'config.sub')
6824 if $seen_canonical;
6825 }
6827 # Must do this after reading .am file.
6828 define_variable ('subdir', $relative_dir, INTERNAL);
6830 # If DIST_SUBDIRS is defined, make sure SUBDIRS is, so that
6831 # recursive rules are enabled.
6832 define_pretty_variable ('SUBDIRS', TRUE, INTERNAL, '')
6833 if var 'DIST_SUBDIRS' && ! var 'SUBDIRS';
6835 # Check first, because we might modify some state.
6836 check_cygnus;
6837 check_gnu_standards;
6838 check_gnits_standards;
6840 handle_configure ($makefile_am, $makefile_in, $makefile, @inputs);
6841 handle_gettext;
6842 handle_libraries;
6843 handle_ltlibraries;
6844 handle_programs;
6845 handle_scripts;
6847 # This must run first so that the ANSI2KNR definition is generated
6848 # before it is used by the _.c rules. We have to do this because
6849 # a variable which is used in a dependency must be defined before
6850 # the target, or else make won't properly see it.
6851 handle_compile;
6852 # This must be run after all the sources are scanned.
6853 handle_languages;
6855 # We have to run this after dealing with all the programs.
6856 handle_libtool;
6858 # Variables used by distdir.am and tags.am.
6859 define_pretty_variable ('SOURCES', TRUE, INTERNAL, @sources);
6860 define_pretty_variable ('DIST_SOURCES', TRUE, INTERNAL, @dist_sources);
6862 handle_multilib;
6863 handle_texinfo;
6864 handle_emacs_lisp;
6865 handle_python;
6866 handle_java;
6867 handle_man_pages;
6868 handle_data;
6869 handle_headers;
6870 handle_subdirs;
6871 handle_tags;
6872 handle_minor_options;
6873 handle_tests;
6875 # This must come after most other rules.
6876 handle_dist;
6878 handle_footer;
6879 do_check_merge_target;
6880 handle_all ($makefile);
6882 # FIXME: Gross!
6883 if (var ('lib_LTLIBRARIES') && var ('bin_PROGRAMS'))
6884 {
6885 $output_rules .= "install-binPROGRAMS: install-libLTLIBRARIES\n\n";
6886 }
6888 handle_install;
6889 handle_clean ($makefile);
6890 handle_factored_dependencies;
6892 # Comes last, because all the above procedures may have
6893 # defined or overridden variables.
6894 $output_vars .= output_variables;
6896 check_typos;
6898 if (! -d ($output_directory . '/' . $am_relative_dir))
6899 {
6900 mkdir ($output_directory . '/' . $am_relative_dir, 0755);
6901 }
6903 my ($out_file) = $output_directory . '/' . $makefile_in;
6905 # We make sure that `all:' is the first target.
6906 my $output =
6907 "$output_vars$output_all$output_header$output_rules$output_trailer";
6909 # Decide whether we must update the output file or not.
6910 # We have to update in the following situations.
6911 # * $force_generation is set.
6912 # * any of the output dependencies is younger than the output
6913 # * the contents of the output is different (this can happen
6914 # if the project has been populated with a file listed in
6915 # @common_files since the last run).
6916 # Output's dependencies are split in two sets:
6917 # * dependencies which are also configure dependencies
6918 # These do not change between each Makefile.am
6919 # * other dependencies, specific to the Makefile.am being processed
6920 # (such as the Makefile.am itself, or any Makefile fragment
6921 # it includes).
6922 my $timestamp = mtime $out_file;
6923 if (! $force_generation
6924 && $configure_deps_greatest_timestamp < $timestamp
6925 && $output_deps_greatest_timestamp < $timestamp
6926 && $output eq contents ($out_file))
6927 {
6928 verb "$out_file unchanged";
6929 # No need to update.
6930 return;
6931 }
6933 if (-e $out_file)
6934 {
6935 unlink ($out_file)
6936 or fatal "cannot remove $out_file: $!\n";
6937 }
6939 my $gm_file = new Automake::XFile "> $out_file";
6940 verb "creating $out_file";
6941 print $gm_file $output;
6942 }
6944 ################################################################
6949 ################################################################
6951 # Print usage information.
6952 sub usage ()
6953 {
6954 print "Usage: $0 [OPTION] ... [Makefile]...
6956 Generate Makefile.in for configure from Makefile.am.
6958 Operation modes:
6959 --help print this help, then exit
6960 --version print version number, then exit
6961 -v, --verbose verbosely list files processed
6962 --no-force only update Makefile.in's that are out of date
6963 -W, --warnings=CATEGORY report the warnings falling in CATEGORY
6965 Dependency tracking:
6966 -i, --ignore-deps disable dependency tracking code
6967 --include-deps enable dependency tracking code
6969 Flavors:
6970 --cygnus assume program is part of Cygnus-style tree
6971 --foreign set strictness to foreign
6972 --gnits set strictness to gnits
6973 --gnu set strictness to gnu
6975 Library files:
6976 -a, --add-missing add missing standard files to package
6977 --libdir=DIR directory storing library files
6978 -c, --copy with -a, copy missing files (default is symlink)
6979 -f, --force-missing force update of standard files
6981 ";
6982 Automake::ChannelDefs::usage;
6984 my ($last, @lcomm);
6985 $last = '';
6986 foreach my $iter (sort ((@common_files, @common_sometimes)))
6987 {
6988 push (@lcomm, $iter) unless $iter eq $last;
6989 $last = $iter;
6990 }
6992 my @four;
6993 print "\nFiles which are automatically distributed, if found:\n";
6994 format USAGE_FORMAT =
6995 @<<<<<<<<<<<<<<<< @<<<<<<<<<<<<<<<< @<<<<<<<<<<<<<<<< @<<<<<<<<<<<<<<<<
6996 $four[0], $four[1], $four[2], $four[3]
6997 .
6998 $~ = "USAGE_FORMAT";
7000 my $cols = 4;
7001 my $rows = int(@lcomm / $cols);
7002 my $rest = @lcomm % $cols;
7004 if ($rest)
7005 {
7006 $rows++;
7007 }
7008 else
7009 {
7010 $rest = $cols;
7011 }
7013 for (my $y = 0; $y < $rows; $y++)
7014 {
7015 @four = ("", "", "", "");
7016 for (my $x = 0; $x < $cols; $x++)
7017 {
7018 last if $y + 1 == $rows && $x == $rest;
7020 my $idx = (($x > $rest)
7021 ? ($rows * $rest + ($rows - 1) * ($x - $rest))
7022 : ($rows * $x));
7024 $idx += $y;
7025 $four[$x] = $lcomm[$idx];
7026 }
7027 write;
7028 }
7030 print "\nReport bugs to <bug-automake\@gnu.org>.\n";
7032 # --help always returns 0 per GNU standards.
7033 exit 0;
7034 }
7037 # &version ()
7038 # -----------
7039 # Print version information
7040 sub version ()
7041 {
7042 print <<EOF;
7043 automake (GNU $PACKAGE) $VERSION
7044 Written by Tom Tromey <tromey\@redhat.com>.
7046 Copyright 2004 Free Software Foundation, Inc.
7047 This is free software; see the source for copying conditions. There is NO
7048 warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
7049 EOF
7050 # --version always returns 0 per GNU standards.
7051 exit 0;
7052 }
7054 ################################################################
7056 # Parse command line.
7057 sub parse_arguments ()
7058 {
7059 # Start off as gnu.
7060 set_strictness ('gnu');
7062 my $cli_where = new Automake::Location;
7063 my %cli_options =
7064 (
7065 'libdir:s' => \$libdir,
7066 'gnu' => sub { set_strictness ('gnu'); },
7067 'gnits' => sub { set_strictness ('gnits'); },
7068 'cygnus' => sub { set_global_option ('cygnus', $cli_where); },
7069 'foreign' => sub { set_strictness ('foreign'); },
7070 'include-deps' => sub { unset_global_option ('no-dependencies'); },
7071 'i|ignore-deps' => sub { set_global_option ('no-dependencies',
7072 $cli_where); },
7073 'no-force' => sub { $force_generation = 0; },
7074 'f|force-missing' => \$force_missing,
7075 'o|output-dir:s' => \$output_directory,
7076 'a|add-missing' => \$add_missing,
7077 'c|copy' => \$copy_missing,
7078 'v|verbose' => sub { setup_channel 'verb', silent => 0; },
7079 'W|warnings:s' => \&parse_warnings,
7080 # These long options (--Werror and --Wno-error) for backward
7081 # compatibility. Use -Werror and -Wno-error today.
7082 'Werror' => sub { parse_warnings 'W', 'error'; },
7083 'Wno-error' => sub { parse_warnings 'W', 'no-error'; },
7084 );
7085 use Getopt::Long;
7086 Getopt::Long::config ("bundling", "pass_through");
7088 # See if --version or --help is used. We want to process these before
7089 # anything else because the GNU Coding Standards require us to
7090 # `exit 0' after processing these options, and we can't guarantee this
7091 # if we treat other options first. (Handling other options first
7092 # could produce error diagnostics, and in this condition it is
7093 # confusing if Automake does `exit 0'.)
7094 my %cli_options_1st_pass =
7095 (
7096 'version' => \&version,
7097 'help' => \&usage,
7098 # Recognize all other options (and their arguments) but do nothing.
7099 map { $_ => sub {} } (keys %cli_options)
7100 );
7101 my @ARGV_backup = @ARGV;
7102 Getopt::Long::GetOptions %cli_options_1st_pass
7103 or exit 1;
7104 @ARGV = @ARGV_backup;
7106 # Now *really* process the options. This time we know
7107 # that --help and --version are not present.
7108 Getopt::Long::GetOptions %cli_options
7109 or exit 1;
7111 if (defined $output_directory)
7112 {
7113 msg 'obsolete', "`--output-dir' is deprecated\n";
7114 }
7115 else
7116 {
7117 # In the next release we'll remove this entirely.
7118 $output_directory = '.';
7119 }
7121 foreach my $arg (@ARGV)
7122 {
7123 if ($arg =~ /^-./)
7124 {
7125 fatal ("unrecognized option `$arg'\n"
7126 . "Try `$0 --help' for more information.");
7127 }
7129 # Handle $local:$input syntax.
7130 my ($local, @rest) = split (/:/, $arg);
7131 @rest = ("$local.in",) unless @rest;
7132 my $input = locate_am @rest;
7133 if ($input)
7134 {
7135 push @input_files, $input;
7136 $output_files{$input} = join (':', ($local, @rest));
7137 }
7138 else
7139 {
7140 error "no Automake input file found in `$arg'";
7141 }
7142 }
7143 }
7145 ################################################################
7147 # Parse the WARNINGS environment variable.
7148 parse_WARNINGS;
7150 # Parse command line.
7151 parse_arguments;
7153 $configure_ac = require_configure_ac;
7155 # Do configure.ac scan only once.
7156 scan_autoconf_files;
7158 fatal "no `Makefile.am' found or specified\n"
7159 if ! @input_files;
7161 my $automake_has_run = 0;
7163 do
7164 {
7165 if ($automake_has_run)
7166 {
7167 verb 'processing Makefiles another time to fix them up.';
7168 prog_error 'running more than two times should never be needed.'
7169 if $automake_has_run >= 2;
7170 }
7171 $automake_needs_to_reprocess_all_files = 0;
7173 # Now do all the work on each file.
7174 foreach my $file (@input_files)
7175 {
7176 ($am_file = $file) =~ s/\.in$//;
7177 if (! -f ($am_file . '.am'))
7178 {
7179 error "`$am_file.am' does not exist";
7180 }
7181 else
7182 {
7183 # Any warning setting now local to this Makefile.am.
7184 dup_channel_setup;
7186 generate_makefile ($am_file . '.am', $file);
7188 # Back out any warning setting.
7189 drop_channel_setup;
7190 }
7191 }
7192 ++$automake_has_run;
7193 }
7194 while ($automake_needs_to_reprocess_all_files);
7196 exit $exit_code;
7199 ### Setup "GNU" style for perl-mode and cperl-mode.
7200 ## Local Variables:
7201 ## perl-indent-level: 2
7202 ## perl-continued-statement-offset: 2
7203 ## perl-continued-brace-offset: 0
7204 ## perl-brace-offset: 0
7205 ## perl-brace-imaginary-offset: 0
7206 ## perl-label-offset: -2
7207 ## cperl-indent-level: 2
7208 ## cperl-brace-offset: 0
7209 ## cperl-continued-brace-offset: 0
7210 ## cperl-label-offset: -2
7211 ## cperl-extra-newline-before-brace: t
7212 ## cperl-merge-trailing-else: nil
7213 ## cperl-continued-statement-offset: 2
7214 ## End: