| blob | c29e1221447e7d47e19bd1c1715e066e02867894 |
1 #!@PERL@ -w
2 # -*- perl -*-
3 # @configure_input@
5 eval 'case $# in 0) exec @PERL@ -S "$0";; *) exec @PERL@ -S "$0" "$@";; esac'
6 if 0;
8 # automake - create Makefile.in from Makefile.am
9 # Copyright (C) 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003
10 # Free Software Foundation, Inc.
12 # This program is free software; you can redistribute it and/or modify
13 # it under the terms of the GNU General Public License as published by
14 # the Free Software Foundation; either version 2, or (at your option)
15 # any later version.
17 # This program is distributed in the hope that it will be useful,
18 # but WITHOUT ANY WARRANTY; without even the implied warranty of
19 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
20 # GNU General Public License for more details.
22 # You should have received a copy of the GNU General Public License
23 # along with this program; if not, write to the Free Software
24 # Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
25 # 02111-1307, USA.
27 # Originally written by David Mackenzie <djm@gnu.ai.mit.edu>.
28 # Perl reimplementation by Tom Tromey <tromey@redhat.com>.
30 package Language;
32 BEGIN
33 {
34 my $perllibdir = $ENV{'perllibdir'} || '@datadir@/@PACKAGE@-@APIVERSION@';
35 unshift @INC, (split ':', $perllibdir);
37 # Override SHELL. This is required on DJGPP so that system() uses
38 # bash, not COMMAND.COM which doesn't quote arguments properly.
39 # Other systems aren't expected to use $SHELL when Automake
40 # runs, but it should be safe to drop the `if DJGPP' guard if
41 # it turns up other systems need the same thing. After all,
42 # if SHELL is used, ./configure's SHELL is always better than
43 # the user's SHELL (which may be something like tcsh).
44 $ENV{'SHELL'} = '@SHELL@' if exists $ENV{'DJGPP'};
45 }
47 use Automake::Struct;
48 struct (# Short name of the language (c, f77...).
49 'name' => "\$",
50 # Nice name of the language (C, Fortran 77...).
51 'Name' => "\$",
53 # List of configure variables which must be defined.
54 'config_vars' => '@',
56 'ansi' => "\$",
57 # `pure' is `1' or `'. A `pure' language is one where, if
58 # all the files in a directory are of that language, then we
59 # do not require the C compiler or any code to call it.
60 'pure' => "\$",
62 'autodep' => "\$",
64 # Name of the compiling variable (COMPILE).
65 'compiler' => "\$",
66 # Content of the compiling variable.
67 'compile' => "\$",
68 # Flag to require compilation without linking (-c).
69 'compile_flag' => "\$",
70 'extensions' => '@',
71 # A subroutine to compute a list of possible extensions of
72 # the product given the input extensions.
73 # (defaults to a subroutine which returns ('.$(OBJEXT)', '.lo'))
74 'output_extensions' => "\$",
75 # A list of flag variables used in 'compile'.
76 # (defaults to [])
77 'flags' => "@",
79 # The file to use when generating rules for this language.
80 # The default is 'depend2'.
81 'rule_file' => "\$",
83 # Name of the linking variable (LINK).
84 'linker' => "\$",
85 # Content of the linking variable.
86 'link' => "\$",
88 # Name of the linker variable (LD).
89 'lder' => "\$",
90 # Content of the linker variable ($(CC)).
91 'ld' => "\$",
93 # Flag to specify the output file (-o).
94 'output_flag' => "\$",
95 '_finish' => "\$",
97 # This is a subroutine which is called whenever we finally
98 # determine the context in which a source file will be
99 # compiled.
100 '_target_hook' => "\$");
103 sub finish ($)
104 {
105 my ($self) = @_;
106 if (defined $self->_finish)
107 {
108 &{$self->_finish} ();
109 }
110 }
112 sub target_hook ($$$$)
113 {
114 my ($self) = @_;
115 if (defined $self->_target_hook)
116 {
117 &{$self->_target_hook} (@_);
118 }
119 }
121 package Automake;
123 use strict;
124 use Automake::Config;
125 use Automake::General;
126 use Automake::XFile;
127 use Automake::Channels;
128 use Automake::ChannelDefs;
129 use Automake::Configure_ac;
130 use Automake::FileUtils;
131 use Automake::Location;
132 use Automake::Condition qw/TRUE FALSE/;
133 use Automake::DisjConditions;
134 use Automake::Options;
135 use Automake::Version;
136 use Automake::Variable;
137 use Automake::VarDef;
138 use Automake::Rule;
139 use Automake::RuleDef;
140 use Automake::Wrap 'makefile_wrap';
141 use File::Basename;
142 use Carp;
144 ## ----------- ##
145 ## Constants. ##
146 ## ----------- ##
148 # Some regular expressions. One reason to put them here is that it
149 # makes indentation work better in Emacs.
151 # Writing singled-quoted-$-terminated regexes is a pain because
152 # perl-mode thinks of $' as the ${'} variable (instead of a $ followed
153 # by a closing quote. Letting perl-mode think the quote is not closed
154 # leads to all sort of misindentations. On the other hand, defining
155 # regexes as double-quoted strings is far less readable. So usually
156 # we will write:
157 #
158 # $REGEX = '^regex_value' . "\$";
160 my $IGNORE_PATTERN = '^\s*##([^#\n].*)?\n';
161 my $WHITE_PATTERN = '^\s*' . "\$";
162 my $COMMENT_PATTERN = '^#';
163 my $TARGET_PATTERN='[$a-zA-Z_.@%][-.a-zA-Z0-9_(){}/$+@%]*';
164 # A rule has three parts: a list of targets, a list of dependencies,
165 # and optionally actions.
166 my $RULE_PATTERN =
167 "^($TARGET_PATTERN(?:(?:\\\\\n|\\s)+$TARGET_PATTERN)*) *:([^=].*|)\$";
169 # Only recognize leading spaces, not leading tabs. If we recognize
170 # leading tabs here then we need to make the reader smarter, because
171 # otherwise it will think rules like `foo=bar; \' are errors.
172 my $ASSIGNMENT_PATTERN = '^ *([^ \t=:+]*)\s*([:+]?)=\s*(.*)' . "\$";
173 # This pattern recognizes a Gnits version id and sets $1 if the
174 # release is an alpha release. We also allow a suffix which can be
175 # used to extend the version number with a "fork" identifier.
176 my $GNITS_VERSION_PATTERN = '\d+\.\d+([a-z]|\.\d+)?(-[A-Za-z0-9]+)?';
178 my $IF_PATTERN = '^if\s+(!?)\s*([A-Za-z][A-Za-z0-9_]*)\s*(?:#.*)?' . "\$";
179 my $ELSE_PATTERN =
180 '^else(?:\s+(!?)\s*([A-Za-z][A-Za-z0-9_]*))?\s*(?:#.*)?' . "\$";
181 my $ENDIF_PATTERN =
182 '^endif(?:\s+(!?)\s*([A-Za-z][A-Za-z0-9_]*))?\s*(?:#.*)?' . "\$";
183 my $PATH_PATTERN = '(\w|[/.-])+';
184 # This will pass through anything not of the prescribed form.
185 my $INCLUDE_PATTERN = ('^include\s+'
186 . '((\$\(top_srcdir\)/' . $PATH_PATTERN . ')'
187 . '|(\$\(srcdir\)/' . $PATH_PATTERN . ')'
188 . '|([^/\$]' . $PATH_PATTERN . '))\s*(#.*)?' . "\$");
190 # Match `-d' as a command-line argument in a string.
191 my $DASH_D_PATTERN = "(^|\\s)-d(\\s|\$)";
192 # Directories installed during 'install-exec' phase.
193 my $EXEC_DIR_PATTERN =
194 '^(?:bin|sbin|libexec|sysconf|localstate|lib|pkglib|.*exec.*)' . "\$";
196 # Values for AC_CANONICAL_*
197 use constant AC_CANONICAL_HOST => 1;
198 use constant AC_CANONICAL_SYSTEM => 2;
200 # Values indicating when something should be cleaned.
201 use constant MOSTLY_CLEAN => 0;
202 use constant CLEAN => 1;
203 use constant DIST_CLEAN => 2;
204 use constant MAINTAINER_CLEAN => 3;
206 # Libtool files.
207 my @libtool_files = qw(ltmain.sh config.guess config.sub);
208 # ltconfig appears here for compatibility with old versions of libtool.
209 my @libtool_sometimes = qw(ltconfig ltcf-c.sh ltcf-cxx.sh ltcf-gcj.sh);
211 # Commonly found files we look for and automatically include in
212 # DISTFILES.
213 my @common_files =
214 (qw(ABOUT-GNU ABOUT-NLS AUTHORS BACKLOG COPYING COPYING.DOC COPYING.LIB
215 COPYING.LESSER ChangeLog INSTALL NEWS README THANKS TODO
216 ansi2knr.1 ansi2knr.c compile config.guess config.rpath config.sub
217 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, 2003
239 # 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 }
969 # get_object_extension ($OUT)
970 # ---------------------------
971 # Return object extension. Just once, put some code into the output.
972 # OUT is the name of the output file
973 sub get_object_extension
974 {
975 my ($out) = @_;
977 # Maybe require libtool library object files.
978 my $extension = '.$(OBJEXT)';
979 $extension = '.lo' if ($out =~ /\.la$/);
981 # Check for automatic de-ANSI-fication.
982 $extension = '$U' . $extension
983 if option 'ansi2knr';
985 $get_object_extension_was_run = 1;
987 return $extension;
988 }
991 # Call finish function for each language that was used.
992 sub handle_languages
993 {
994 if (! option 'no-dependencies')
995 {
996 # Include auto-dep code. Don't include it if DEP_FILES would
997 # be empty.
998 if (&saw_sources_p (0) && keys %dep_files)
999 {
1000 # Set location of depcomp.
1001 &define_variable ('depcomp', "\$(SHELL) $config_aux_dir/depcomp",
1002 INTERNAL);
1003 &define_variable ('am__depfiles_maybe', 'depfiles', INTERNAL);
1005 require_conf_file ("$am_file.am", FOREIGN, 'depcomp');
1007 my @deplist = sort keys %dep_files;
1009 # We define this as a conditional variable because BSD
1010 # make can't handle backslashes for continuing comments on
1011 # the following line.
1012 define_pretty_variable ('DEP_FILES',
1013 new Automake::Condition ('AMDEP_TRUE'),
1014 INTERNAL, @deplist);
1016 # Generate each `include' individually. Irix 6 make will
1017 # not properly include several files resulting from a
1018 # variable expansion; generating many separate includes
1019 # seems safest.
1020 $output_rules .= "\n";
1021 foreach my $iter (@deplist)
1022 {
1023 $output_rules .= (subst ('AMDEP_TRUE')
1024 . subst ('am__include')
1025 . ' '
1026 . subst ('am__quote')
1027 . $iter
1028 . subst ('am__quote')
1029 . "\n");
1030 }
1032 # Compute the set of directories to remove in distclean-depend.
1033 my @depdirs = uniq (map { dirname ($_) } @deplist);
1034 $output_rules .= &file_contents ('depend',
1035 new Automake::Location,
1036 DEPDIRS => "@depdirs");
1037 }
1038 }
1039 else
1040 {
1041 &define_variable ('depcomp', '', INTERNAL);
1042 &define_variable ('am__depfiles_maybe', '', INTERNAL);
1043 }
1045 my %done;
1047 # Is the c linker needed?
1048 my $needs_c = 0;
1049 foreach my $ext (sort keys %extension_seen)
1050 {
1051 next unless $extension_map{$ext};
1053 my $lang = $languages{$extension_map{$ext}};
1055 my $rule_file = $lang->rule_file || 'depend2';
1057 # Get information on $LANG.
1058 my $pfx = $lang->autodep;
1059 my $fpfx = ($pfx eq '') ? 'CC' : $pfx;
1061 my ($AMDEP, $FASTDEP) =
1062 (option 'no-dependencies' || $lang->autodep eq 'no')
1063 ? ('FALSE', 'FALSE') : ('AMDEP', "am__fastdep$fpfx");
1065 my %transform = ('EXT' => $ext,
1066 'PFX' => $pfx,
1067 'FPFX' => $fpfx,
1068 'AMDEP' => $AMDEP,
1069 'FASTDEP' => $FASTDEP,
1070 '-c' => $lang->compile_flag || '',
1071 'MORE-THAN-ONE'
1072 => (count_files_for_language ($lang->name) > 1));
1074 # Generate the appropriate rules for this extension.
1075 if (((! option 'no-dependencies') && $lang->autodep ne 'no')
1076 || defined $lang->compile)
1077 {
1078 # Some C compilers don't support -c -o. Use it only if really
1079 # needed.
1080 my $output_flag = $lang->output_flag || '';
1081 $output_flag = '-o'
1082 if (! $output_flag
1083 && $lang->name eq 'c'
1084 && option 'subdir-objects');
1086 # Compute a possible derived extension.
1087 # This is not used by depend2.am.
1088 my $der_ext = (&{$lang->output_extensions} ($ext))[0];
1090 $output_rules .=
1091 file_contents ($rule_file,
1092 new Automake::Location,
1093 %transform,
1094 GENERIC => 1,
1096 'DERIVED-EXT' => $der_ext,
1098 # In this situation we know that the
1099 # object is in this directory, so
1100 # $(DEPDIR) is the correct location for
1101 # dependencies.
1102 DEPBASE => '$(DEPDIR)/$*',
1103 BASE => '$*',
1104 SOURCE => '$<',
1105 OBJ => '$@',
1106 OBJOBJ => '$@',
1107 LTOBJ => '$@',
1109 COMPILE => '$(' . $lang->compiler . ')',
1110 LTCOMPILE => '$(LT' . $lang->compiler . ')',
1111 -o => $output_flag);
1112 }
1114 # Now include code for each specially handled object with this
1115 # language.
1116 my %seen_files = ();
1117 foreach my $file (@{$lang_specific_files{$lang->name}})
1118 {
1119 my ($derived, $source, $obj, $myext) = split (' ', $file);
1121 # We might see a given object twice, for instance if it is
1122 # used under different conditions.
1123 next if defined $seen_files{$obj};
1124 $seen_files{$obj} = 1;
1126 prog_error ("found " . $lang->name .
1127 " in handle_languages, but compiler not defined")
1128 unless defined $lang->compile;
1130 my $obj_compile = $lang->compile;
1132 # Rewrite each occurrence of `AM_$flag' in the compile
1133 # rule into `${derived}_$flag' if it exists.
1134 for my $flag (@{$lang->flags})
1135 {
1136 my $val = "${derived}_$flag";
1137 $obj_compile =~ s/\(AM_$flag\)/\($val\)/
1138 if set_seen ($val);
1139 }
1141 my $obj_ltcompile = '$(LIBTOOL) --mode=compile ' . $obj_compile;
1143 # We _need_ `-o' for per object rules.
1144 my $output_flag = $lang->output_flag || '-o';
1146 my $depbase = dirname ($obj);
1147 $depbase = ''
1148 if $depbase eq '.';
1149 $depbase .= '/'
1150 unless $depbase eq '';
1151 $depbase .= '$(DEPDIR)/' . basename ($obj);
1153 # Support for deansified files in subdirectories is ugly
1154 # enough to deserve an explanation.
1155 #
1156 # A Note about normal ansi2knr processing first. On
1157 #
1158 # AUTOMAKE_OPTIONS = ansi2knr
1159 # bin_PROGRAMS = foo
1160 # foo_SOURCES = foo.c
1161 #
1162 # we generate rules similar to:
1163 #
1164 # foo: foo$U.o; link ...
1165 # foo$U.o: foo$U.c; compile ...
1166 # foo_.c: foo.c; ansi2knr ...
1167 #
1168 # this is fairly compact, and will call ansi2knr depending
1169 # on the value of $U (`' or `_').
1170 #
1171 # It's harder with subdir sources. On
1172 #
1173 # AUTOMAKE_OPTIONS = ansi2knr
1174 # bin_PROGRAMS = foo
1175 # foo_SOURCES = sub/foo.c
1176 #
1177 # we have to create foo_.c in the current directory.
1178 # (Unless the user asks 'subdir-objects'.) This is important
1179 # in case the same file (`foo.c') is compiled from other
1180 # directories with different cpp options: foo_.c would
1181 # be preprocessed for only one set of options if it were
1182 # put in the subdirectory.
1183 #
1184 # Because foo$U.o must be built from either foo_.c or
1185 # sub/foo.c we can't be as concise as in the first example.
1186 # Instead we output
1187 #
1188 # foo: foo$U.o; link ...
1189 # foo_.o: foo_.c; compile ...
1190 # foo.o: sub/foo.c; compile ...
1191 # foo_.c: foo.c; ansi2knr ...
1192 #
1193 # This is why we'll now transform $rule_file twice
1194 # if we detect this case.
1195 # A first time we output the compile rule with `$U'
1196 # replaced by `_' and the source directory removed,
1197 # and another time we simply remove `$U'.
1198 #
1199 # Note that at this point $source (as computed by
1200 # &handle_single_transform_list) is `sub/foo$U.c'.
1201 # This can be confusing: it can be used as-is when
1202 # subdir-objects is set, otherwise you have to know
1203 # it really means `foo_.c' or `sub/foo.c'.
1204 my $objdir = dirname ($obj);
1205 my $srcdir = dirname ($source);
1206 if ($lang->ansi && $obj =~ /\$U/)
1207 {
1208 prog_error "`$obj' contains \$U, but `$source' doesn't."
1209 if $source !~ /\$U/;
1211 (my $source_ = $source) =~ s/\$U/_/g;
1212 # Explicitly clean the _.c files if they are in
1213 # a subdirectory. (In the current directory they get
1214 # erased by a `rm -f *_.c' rule.)
1215 $clean_files{$source_} = MOSTLY_CLEAN
1216 if $objdir ne '.';
1217 # Output an additional rule if _.c and .c are not in
1218 # the same directory. (_.c is always in $objdir.)
1219 if ($objdir ne $srcdir)
1220 {
1221 (my $obj_ = $obj) =~ s/\$U/_/g;
1222 (my $depbase_ = $depbase) =~ s/\$U/_/g;
1223 $source_ = basename ($source_);
1225 $output_rules .=
1226 file_contents ($rule_file,
1227 new Automake::Location,
1228 %transform,
1229 GENERIC => 0,
1231 DEPBASE => $depbase_,
1232 BASE => $obj_,
1233 SOURCE => $source_,
1234 OBJ => "$obj_$myext",
1235 OBJOBJ => "$obj_.obj",
1236 LTOBJ => "$obj_.lo",
1238 COMPILE => $obj_compile,
1239 LTCOMPILE => $obj_ltcompile,
1240 -o => $output_flag);
1241 $obj =~ s/\$U//g;
1242 $depbase =~ s/\$U//g;
1243 $source =~ s/\$U//g;
1244 }
1245 }
1247 $output_rules .=
1248 file_contents ($rule_file,
1249 new Automake::Location,
1250 %transform,
1251 GENERIC => 0,
1253 DEPBASE => $depbase,
1254 BASE => $obj,
1255 SOURCE => $source,
1256 # Use $myext and not `.o' here, in case
1257 # we are actually building a new source
1258 # file -- e.g. via yacc.
1259 OBJ => "$obj$myext",
1260 OBJOBJ => "$obj.obj",
1261 LTOBJ => "$obj.lo",
1263 COMPILE => $obj_compile,
1264 LTCOMPILE => $obj_ltcompile,
1265 -o => $output_flag);
1266 }
1268 # The rest of the loop is done once per language.
1269 next if defined $done{$lang};
1270 $done{$lang} = 1;
1272 # Load the language dependent Makefile chunks.
1273 my %lang = map { uc ($_) => 0 } keys %languages;
1274 $lang{uc ($lang->name)} = 1;
1275 $output_rules .= file_contents ('lang-compile',
1276 new Automake::Location,
1277 %transform, %lang);
1279 # If the source to a program consists entirely of code from a
1280 # `pure' language, for instance C++ for Fortran 77, then we
1281 # don't need the C compiler code. However if we run into
1282 # something unusual then we do generate the C code. There are
1283 # probably corner cases here that do not work properly.
1284 # People linking Java code to Fortran code deserve pain.
1285 $needs_c ||= ! $lang->pure;
1287 define_compiler_variable ($lang)
1288 if ($lang->compile);
1290 define_linker_variable ($lang)
1291 if ($lang->link);
1293 require_variables ("$am_file.am", $lang->Name . " source seen",
1294 TRUE, @{$lang->config_vars});
1296 # Call the finisher.
1297 $lang->finish;
1299 # Flags listed in `->flags' are user variables (per GNU Standards),
1300 # they should not be overridden in the Makefile...
1301 my @dont_override = @{$lang->flags};
1302 # ... and so is LDFLAGS.
1303 push @dont_override, 'LDFLAGS' if $lang->link;
1305 foreach my $flag (@dont_override)
1306 {
1307 my $var = var $flag;
1308 if ($var)
1309 {
1310 for my $cond ($var->conditions->conds)
1311 {
1312 if ($var->rdef ($cond)->owner == VAR_MAKEFILE)
1313 {
1314 msg_cond_var ('gnu', $cond, $flag,
1315 "`$flag' is a user variable, "
1316 . "you should not override it;\n"
1317 . "use `AM_$flag' instead.");
1318 }
1319 }
1320 }
1321 }
1322 }
1324 # If the project is entirely C++ or entirely Fortran 77 (i.e., 1
1325 # suffix rule was learned), don't bother with the C stuff. But if
1326 # anything else creeps in, then use it.
1327 $needs_c = 1
1328 if $need_link || suffix_rules_count > 1;
1330 if ($needs_c)
1331 {
1332 &define_compiler_variable ($languages{'c'})
1333 unless defined $done{$languages{'c'}};
1334 define_linker_variable ($languages{'c'});
1335 }
1336 }
1338 # Check to make sure a source defined in LIBOBJS is not explicitly
1339 # mentioned. This is a separate function (as opposed to being inlined
1340 # in handle_source_transform) because it isn't always appropriate to
1341 # do this check.
1342 sub check_libobjs_sources
1343 {
1344 my ($one_file, $unxformed) = @_;
1346 foreach my $prefix ('', 'EXTRA_', 'dist_', 'nodist_',
1347 'dist_EXTRA_', 'nodist_EXTRA_')
1348 {
1349 my @files;
1350 my $varname = $prefix . $one_file . '_SOURCES';
1351 my $var = var ($varname);
1352 if ($var)
1353 {
1354 @files = $var->value_as_list_recursive;
1355 }
1356 elsif ($prefix eq '')
1357 {
1358 @files = ($unxformed . '.c');
1359 }
1360 else
1361 {
1362 next;
1363 }
1365 foreach my $file (@files)
1366 {
1367 err_var ($prefix . $one_file . '_SOURCES',
1368 "automatically discovered file `$file' should not" .
1369 " be explicitly mentioned")
1370 if defined $libsources{$file};
1371 }
1372 }
1373 }
1376 # @OBJECTS
1377 # handle_single_transform_list ($VAR, $TOPPARENT, $DERIVED, $OBJ, @FILES)
1378 # -----------------------------------------------------------------------
1379 # Does much of the actual work for handle_source_transform.
1380 # Arguments are:
1381 # $VAR is the name of the variable that the source filenames come from
1382 # $TOPPARENT is the name of the _SOURCES variable which is being processed
1383 # $DERIVED is the name of resulting executable or library
1384 # $OBJ is the object extension (e.g., `$U.lo')
1385 # @FILES is the list of source files to transform
1386 # Result is a list of the names of objects
1387 # %linkers_used will be updated with any linkers needed
1388 sub handle_single_transform_list ($$$$@)
1389 {
1390 my ($var, $topparent, $derived, $obj, @files) = @_;
1391 my @result = ();
1392 my $nonansi_obj = $obj;
1393 $nonansi_obj =~ s/\$U//g;
1395 # Turn sources into objects. We use a while loop like this
1396 # because we might add to @files in the loop.
1397 while (scalar @files > 0)
1398 {
1399 $_ = shift @files;
1401 # Configure substitutions in _SOURCES variables are errors.
1402 if (/^\@.*\@$/)
1403 {
1404 my $parent_msg = '';
1405 $parent_msg = "\nand is referred to from `$topparent'"
1406 if $topparent ne $var->name;
1407 err_var ($var,
1408 "`" . $var->name . "' includes configure substitution `$_'"
1409 . $parent_msg . ";\nconfigure " .
1410 "substitutions are not allowed in _SOURCES variables");
1411 next;
1412 }
1414 # If the source file is in a subdirectory then the `.o' is put
1415 # into the current directory, unless the subdir-objects option
1416 # is in effect.
1418 # Split file name into base and extension.
1419 next if ! /^(?:(.*)\/)?([^\/]*)($KNOWN_EXTENSIONS_PATTERN)$/;
1420 my $full = $_;
1421 my $directory = $1 || '';
1422 my $base = $2;
1423 my $extension = $3;
1425 # We must generate a rule for the object if it requires its own flags.
1426 my $renamed = 0;
1427 my ($linker, $object);
1429 # This records whether we've seen a derived source file (e.g.
1430 # yacc output).
1431 my $derived_source = 0;
1433 # This holds the `aggregate context' of the file we are
1434 # currently examining. If the file is compiled with
1435 # per-object flags, then it will be the name of the object.
1436 # Otherwise it will be `AM'. This is used by the target hook
1437 # language function.
1438 my $aggregate = 'AM';
1440 $extension = &derive_suffix ($extension, $nonansi_obj);
1441 my $lang;
1442 if ($extension_map{$extension} &&
1443 ($lang = $languages{$extension_map{$extension}}))
1444 {
1445 # Found the language, so see what it says.
1446 &saw_extension ($extension);
1448 # Note: computed subr call. The language rewrite function
1449 # should return one of the LANG_* constants. It could
1450 # also return a list whose first value is such a constant
1451 # and whose second value is a new source extension which
1452 # should be applied. This means this particular language
1453 # generates another source file which we must then process
1454 # further.
1455 my $subr = \&{'lang_' . $lang->name . '_rewrite'};
1456 my ($r, $source_extension)
1457 = &$subr ($directory, $base, $extension);
1458 # Skip this entry if we were asked not to process it.
1459 next if $r == LANG_IGNORE;
1461 # Now extract linker and other info.
1462 $linker = $lang->linker;
1464 my $this_obj_ext;
1465 if (defined $source_extension)
1466 {
1467 $this_obj_ext = $source_extension;
1468 $derived_source = 1;
1469 }
1470 elsif ($lang->ansi)
1471 {
1472 $this_obj_ext = $obj;
1473 }
1474 else
1475 {
1476 $this_obj_ext = $nonansi_obj;
1477 }
1478 $object = $base . $this_obj_ext;
1480 # Do we have per-executable flags for this executable?
1481 my $have_per_exec_flags = 0;
1482 foreach my $flag (@{$lang->flags})
1483 {
1484 if (set_seen ("${derived}_$flag"))
1485 {
1486 $have_per_exec_flags = 1;
1487 last;
1488 }
1489 }
1491 if ($have_per_exec_flags)
1492 {
1493 # We have a per-executable flag in effect for this
1494 # object. In this case we rewrite the object's
1495 # name to ensure it is unique. We also require
1496 # the `compile' program to deal with compilers
1497 # where `-c -o' does not work.
1499 # We choose the name `DERIVED_OBJECT' to ensure
1500 # (1) uniqueness, and (2) continuity between
1501 # invocations. However, this will result in a
1502 # name that is too long for losing systems, in
1503 # some situations. So we provide _SHORTNAME to
1504 # override.
1506 my $dname = $derived;
1507 my $var = var ($derived . '_SHORTNAME');
1508 if ($var)
1509 {
1510 # FIXME: should use the same Condition as
1511 # the _SOURCES variable. But this is really
1512 # silly overkill -- nobody should have
1513 # conditional shortnames.
1514 $dname = $var->variable_value;
1515 }
1516 $object = $dname . '-' . $object;
1518 require_conf_file ("$am_file.am", FOREIGN, 'compile')
1519 if $lang->name eq 'c';
1521 prog_error ($lang->name . " flags defined without compiler")
1522 if ! defined $lang->compile;
1524 $renamed = 1;
1525 }
1527 # If rewrite said it was ok, put the object into a
1528 # subdir.
1529 if ($r == LANG_SUBDIR && $directory ne '')
1530 {
1531 $object = $directory . '/' . $object;
1532 }
1534 # If doing dependency tracking, then we can't print
1535 # the rule. If we have a subdir object, we need to
1536 # generate an explicit rule. Actually, in any case
1537 # where the object is not in `.' we need a special
1538 # rule. The per-object rules in this case are
1539 # generated later, by handle_languages.
1540 if ($renamed || $directory ne '')
1541 {
1542 my $obj_sans_ext = substr ($object, 0,
1543 - length ($this_obj_ext));
1544 my $full_ansi = $full;
1545 if ($lang->ansi && option 'ansi2knr')
1546 {
1547 $full_ansi =~ s/$KNOWN_EXTENSIONS_PATTERN$/\$U$&/;
1548 $obj_sans_ext .= '$U';
1549 }
1551 my $val = ("$full_ansi $obj_sans_ext "
1552 # Only use $this_obj_ext in the derived
1553 # source case because in the other case we
1554 # *don't* want $(OBJEXT) to appear here.
1555 . ($derived_source ? $this_obj_ext : '.o'));
1557 # If we renamed the object then we want to use the
1558 # per-executable flag name. But if this is simply a
1559 # subdir build then we still want to use the AM_ flag
1560 # name.
1561 if ($renamed)
1562 {
1563 $val = "$derived $val";
1564 $aggregate = $derived;
1565 }
1566 else
1567 {
1568 $val = "AM $val";
1569 }
1571 # Each item on this list is a string consisting of
1572 # four space-separated values: the derived flag prefix
1573 # (e.g. for `foo_CFLAGS', it is `foo'), the name of the
1574 # source file, the base name of the output file, and
1575 # the extension for the object file.
1576 push (@{$lang_specific_files{$lang->name}}, $val);
1577 }
1578 }
1579 elsif ($extension eq $nonansi_obj)
1580 {
1581 # This is probably the result of a direct suffix rule.
1582 # In this case we just accept the rewrite.
1583 $object = "$base$extension";
1584 $linker = '';
1585 }
1586 else
1587 {
1588 # No error message here. Used to have one, but it was
1589 # very unpopular.
1590 # FIXME: we could potentially do more processing here,
1591 # perhaps treating the new extension as though it were a
1592 # new source extension (as above). This would require
1593 # more restructuring than is appropriate right now.
1594 next;
1595 }
1597 err_am "object `$object' created by `$full' and `$object_map{$object}'"
1598 if (defined $object_map{$object}
1599 && $object_map{$object} ne $full);
1601 my $comp_val = (($object =~ /\.lo$/)
1602 ? COMPILE_LIBTOOL : COMPILE_ORDINARY);
1603 (my $comp_obj = $object) =~ s/\.lo$/.\$(OBJEXT)/;
1604 if (defined $object_compilation_map{$comp_obj}
1605 && $object_compilation_map{$comp_obj} != 0
1606 # Only see the error once.
1607 && ($object_compilation_map{$comp_obj}
1608 != (COMPILE_LIBTOOL | COMPILE_ORDINARY))
1609 && $object_compilation_map{$comp_obj} != $comp_val)
1610 {
1611 err_am "object `$comp_obj' created both with libtool and without";
1612 }
1613 $object_compilation_map{$comp_obj} |= $comp_val;
1615 if (defined $lang)
1616 {
1617 # Let the language do some special magic if required.
1618 $lang->target_hook ($aggregate, $object, $full);
1619 }
1621 if ($derived_source)
1622 {
1623 prog_error ($lang->name . " has automatic dependency tracking")
1624 if $lang->autodep ne 'no';
1625 # Make sure this new source file is handled next. That will
1626 # make it appear to be at the right place in the list.
1627 unshift (@files, $object);
1628 # Distribute derived sources unless the source they are
1629 # derived from is not.
1630 &push_dist_common ($object)
1631 unless ($topparent =~ /^(?:nobase_)?nodist_/);
1632 next;
1633 }
1635 $linkers_used{$linker} = 1;
1637 push (@result, $object);
1639 if (! defined $object_map{$object})
1640 {
1641 my @dep_list = ();
1642 $object_map{$object} = $full;
1644 # If resulting object is in subdir, we need to make
1645 # sure the subdir exists at build time.
1646 if ($object =~ /\//)
1647 {
1648 # FIXME: check that $DIRECTORY is somewhere in the
1649 # project
1651 # For Java, the way we're handling it right now, a
1652 # `..' component doesn't make sense.
1653 if ($lang->name eq 'java' && $object =~ /(\/|^)\.\.\//)
1654 {
1655 err_am "`$full' should not contain a `..' component";
1656 }
1658 # Make sure object is removed by `make mostlyclean'.
1659 $compile_clean_files{$object} = MOSTLY_CLEAN;
1660 # If we have a libtool object then we also must remove
1661 # the ordinary .o.
1662 if ($object =~ /\.lo$/)
1663 {
1664 (my $xobj = $object) =~ s,lo$,\$(OBJEXT),;
1665 $compile_clean_files{$xobj} = MOSTLY_CLEAN;
1667 # Remove any libtool object in this directory.
1668 $libtool_clean_directories{$directory} = 1;
1669 }
1671 push (@dep_list, require_build_directory ($directory));
1673 # If we're generating dependencies, we also want
1674 # to make sure that the appropriate subdir of the
1675 # .deps directory is created.
1676 push (@dep_list,
1677 require_build_directory ($directory . '/$(DEPDIR)'))
1678 unless option 'no-dependencies';
1679 }
1681 &pretty_print_rule ($object . ':', "\t", @dep_list)
1682 if scalar @dep_list > 0;
1683 }
1685 # Transform .o or $o file into .P file (for automatic
1686 # dependency code).
1687 if ($lang && $lang->autodep ne 'no')
1688 {
1689 my $depfile = $object;
1690 $depfile =~ s/\.([^.]*)$/.P$1/;
1691 $depfile =~ s/\$\(OBJEXT\)$/o/;
1692 $dep_files{dirname ($depfile) . '/$(DEPDIR)/'
1693 . basename ($depfile)} = 1;
1694 }
1695 }
1697 return @result;
1698 }
1701 # $LINKER
1702 # define_objects_from_sources ($VAR, $OBJVAR, $NODEFINE, $ONE_FILE,
1703 # $OBJ, $PARENT, $TOPPARENT, $WHERE)
1704 # ---------------------------------------------------------------------
1705 # Define an _OBJECTS variable for a _SOURCES variable (or subvariable)
1706 #
1707 # Arguments are:
1708 # $VAR is the name of the _SOURCES variable
1709 # $OBJVAR is the name of the _OBJECTS variable if known (otherwise
1710 # it will be generated and returned).
1711 # $NODEFINE is a boolean: if true, $OBJVAR will not be defined (but
1712 # work done to determine the linker will be).
1713 # $ONE_FILE is the canonical (transformed) name of object to build
1714 # $OBJ is the object extension (i.e. either `.o' or `.lo').
1715 # $TOPPARENT is the _SOURCES variable being processed.
1716 # $WHERE context into which this definition is done
1717 #
1718 # Result is a pair ($LINKER, $OBJVAR):
1719 # $LINKER is a boolean, true if a linker is needed to deal with the objects
1720 sub define_objects_from_sources ($$$$$$$)
1721 {
1722 my ($var, $objvar, $nodefine, $one_file, $obj, $topparent, $where) = @_;
1724 my $needlinker = "";
1726 transform_variable_recursively
1727 ($var, $objvar, 'am__objects', $nodefine, $where,
1728 # The transform code to run on each filename.
1729 sub {
1730 my ($subvar, $val, $cond, $full_cond) = @_;
1731 my @trans = &handle_single_transform_list ($subvar, $topparent,
1732 $one_file, $obj, $val);
1733 $needlinker = "true" if @trans;
1734 return @trans;
1735 });
1737 return $needlinker;
1738 }
1741 # Handle SOURCE->OBJECT transform for one program or library.
1742 # Arguments are:
1743 # canonical (transformed) name of object to build
1744 # actual name of object to build
1745 # object extension (i.e. either `.o' or `$o'.
1746 # Return result is name of linker variable that must be used.
1747 # Empty return means just use `LINK'.
1748 sub handle_source_transform
1749 {
1750 # one_file is canonical name. unxformed is given name. obj is
1751 # object extension.
1752 my ($one_file, $unxformed, $obj, $where) = @_;
1754 my ($linker) = '';
1756 # No point in continuing if _OBJECTS is defined.
1757 return if reject_var ($one_file . '_OBJECTS',
1758 $one_file . '_OBJECTS should not be defined');
1760 my %used_pfx = ();
1761 my $needlinker;
1762 %linkers_used = ();
1763 foreach my $prefix ('', 'EXTRA_', 'dist_', 'nodist_',
1764 'dist_EXTRA_', 'nodist_EXTRA_')
1765 {
1766 my $varname = $prefix . $one_file . "_SOURCES";
1767 my $var = var $varname;
1768 next unless $var;
1770 # We are going to define _OBJECTS variables using the prefix.
1771 # Then we glom them all together. So we can't use the null
1772 # prefix here as we need it later.
1773 my $xpfx = ($prefix eq '') ? 'am_' : $prefix;
1775 # Keep track of which prefixes we saw.
1776 $used_pfx{$xpfx} = 1
1777 unless $prefix =~ /EXTRA_/;
1779 push @sources, "\$($varname)";
1780 if ($prefix !~ /^nodist_/)
1781 {
1782 # If the VAR wasn't defined conditionally, we add
1783 # it to DIST_SOURCES as is. Otherwise we create a
1784 # am__VAR_DIST variable which contains all possible values,
1785 # and add this variable to DIST_SOURCES.
1786 my $distvar = $varname;
1787 if ($var->has_conditional_contents)
1788 {
1789 $distvar = "am__${varname}_DIST";
1790 my @files = uniq ($var->value_as_list_recursive);
1791 define_pretty_variable ($distvar, TRUE, $where, @files);
1792 }
1793 push @dist_sources, "\$($distvar)"
1794 }
1796 $needlinker |=
1797 define_objects_from_sources ($varname,
1798 $xpfx . $one_file . '_OBJECTS',
1799 $prefix =~ /EXTRA_/,
1800 $one_file, $obj, $varname, $where);
1801 }
1802 if ($needlinker)
1803 {
1804 $linker ||= &resolve_linker (%linkers_used);
1805 }
1807 my @keys = sort keys %used_pfx;
1808 if (scalar @keys == 0)
1809 {
1810 # The default source for libfoo.la is libfoo.c, but for
1811 # backward compatibility we first look at libfoo_la.c
1812 my $old_default_source = "$one_file.c";
1813 (my $default_source = $unxformed) =~ s,(\.[^./\\]*)?$,.c,;
1814 if ($old_default_source ne $default_source
1815 && (rule $old_default_source || -f $old_default_source))
1816 {
1817 my $loc = $where->clone;
1818 $loc->pop_context;
1819 msg ('obsolete', $loc,
1820 "the default source for `$unxformed' has been changed "
1821 . "to `$default_source'.\n(Using `$old_default_source' for "
1822 . "backward compatibility.)");
1823 $default_source = $old_default_source;
1824 }
1826 &define_variable ($one_file . "_SOURCES", $default_source, $where);
1827 push (@sources, $default_source);
1828 push (@dist_sources, $default_source);
1830 %linkers_used = ();
1831 my (@result) =
1832 &handle_single_transform_list ($one_file . '_SOURCES',
1833 $one_file . '_SOURCES',
1834 $one_file, $obj,
1835 $default_source);
1836 $linker ||= &resolve_linker (%linkers_used);
1837 define_pretty_variable ($one_file . '_OBJECTS', TRUE, $where, @result);
1838 }
1839 else
1840 {
1841 @keys = map { '$(' . $_ . $one_file . '_OBJECTS)' } @keys;
1842 define_pretty_variable ($one_file . '_OBJECTS', TRUE, $where, @keys);
1843 }
1845 # If we want to use `LINK' we must make sure it is defined.
1846 if ($linker eq '')
1847 {
1848 $need_link = 1;
1849 }
1851 return $linker;
1852 }
1855 # handle_lib_objects ($XNAME, $VAR)
1856 # ---------------------------------
1857 # Special-case ALLOCA and LIBOBJS substitutions in _LDADD or _LIBADD variables.
1858 # Also, generate _DEPENDENCIES variable if appropriate.
1859 # Arguments are:
1860 # transformed name of object being built, or empty string if no object
1861 # name of _LDADD/_LIBADD-type variable to examine
1862 # Returns 1 if LIBOBJS seen, 0 otherwise.
1863 sub handle_lib_objects
1864 {
1865 my ($xname, $varname) = @_;
1867 my $var = var ($varname);
1868 prog_error "handle_lib_objects: `$varname' undefined"
1869 unless $var;
1870 prog_error "handle_lib_objects: unexpected variable name `$varname'"
1871 unless $varname =~ /^(.*)(?:LIB|LD)ADD$/;
1872 my $prefix = $1 || 'AM_';
1874 my $seen_libobjs = 0;
1875 my $flagvar = 0;
1877 transform_variable_recursively
1878 ($varname, $xname . '_DEPENDENCIES', 'am__DEPENDENCIES',
1879 ! $xname, INTERNAL,
1880 # Transformation function, run on each filename.
1881 sub {
1882 my ($subvar, $val, $cond, $full_cond) = @_;
1884 if ($val =~ /^-/)
1885 {
1886 # Skip -lfoo and -Ldir silently; these are explicitly allowed.
1887 if ($val !~ /^-[lL]/ &&
1888 # Skip -dlopen and -dlpreopen; these are explicitly allowed
1889 # for Libtool libraries or programs. (Actually we are a bit
1890 # laxest here since this code also applies to non-libtool
1891 # libraries or programs, for which -dlopen and -dlopreopen
1892 # are pure non-sence. Diagnosting this doesn't seems very
1893 # important: the developer will quickly get complaints from
1894 # the linker.)
1895 $val !~ /^-dl(?:pre)?open$/ &&
1896 # Only get this error once.
1897 ! $flagvar)
1898 {
1899 $flagvar = 1;
1900 # FIXME: should display a stack of nested variables
1901 # as context when $var != $subvar.
1902 err_var ($var, "linker flags such as `$val' belong in "
1903 . "`${prefix}LDFLAGS");
1904 }
1905 return ();
1906 }
1907 elsif ($val !~ /^\@.*\@$/)
1908 {
1909 # Assume we have a file of some sort, and output it into the
1910 # dependency variable. Autoconf substitutions are not output;
1911 # rarely is a new dependency substituted into e.g. foo_LDADD
1912 # -- but bad things (e.g. -lX11) are routinely substituted.
1913 # Note that LIBOBJS and ALLOCA are exceptions to this rule,
1914 # and handled specially below.
1915 return $val;
1916 }
1917 elsif ($val =~ /^\@(LT)?LIBOBJS\@$/)
1918 {
1919 handle_LIBOBJS ($subvar, $full_cond, $1);
1920 $seen_libobjs = 1;
1921 return $val;
1922 }
1923 elsif ($val =~ /^\@(LT)?ALLOCA\@$/)
1924 {
1925 handle_ALLOCA ($subvar, $full_cond, $1);
1926 return $val;
1927 }
1928 else
1929 {
1930 return ();
1931 }
1932 });
1934 return $seen_libobjs;
1935 }
1937 sub handle_LIBOBJS ($$$)
1938 {
1939 my ($var, $cond, $lt) = @_;
1940 $lt ||= '';
1941 my $myobjext = ($1 ? 'l' : '') . 'o';
1943 $var->requires_variables ("\@${lt}LIBOBJS\@ used", $lt . 'LIBOBJS')
1944 if ! keys %libsources;
1946 foreach my $iter (keys %libsources)
1947 {
1948 if ($iter =~ /\.[cly]$/)
1949 {
1950 &saw_extension ($&);
1951 &saw_extension ('.c');
1952 }
1954 if ($iter =~ /\.h$/)
1955 {
1956 require_file_with_macro ($cond, $var, FOREIGN, $iter);
1957 }
1958 elsif ($iter ne 'alloca.c')
1959 {
1960 my $rewrite = $iter;
1961 $rewrite =~ s/\.c$/.P$myobjext/;
1962 $dep_files{'$(DEPDIR)/' . $rewrite} = 1;
1963 $rewrite = "^" . quotemeta ($iter) . "\$";
1964 # Only require the file if it is not a built source.
1965 my $bs = var ('BUILT_SOURCES');
1966 if (! $bs || ! grep (/$rewrite/, $bs->value_as_list_recursive))
1967 {
1968 require_file_with_macro ($cond, $var, FOREIGN, $iter);
1969 }
1970 }
1971 }
1972 }
1974 sub handle_ALLOCA ($$$)
1975 {
1976 my ($var, $cond, $lt) = @_;
1977 my $myobjext = ($lt ? 'l' : '') . 'o';
1978 $lt ||= '';
1979 $var->requires_variables ("\@${lt}ALLOCA\@ used", $lt . 'ALLOCA');
1980 $dep_files{'$(DEPDIR)/alloca.P' . $myobjext} = 1;
1981 require_file_with_macro ($cond, $var, FOREIGN, 'alloca.c');
1982 &saw_extension ('c');
1983 }
1985 # Canonicalize the input parameter
1986 sub canonicalize
1987 {
1988 my ($string) = @_;
1989 $string =~ tr/A-Za-z0-9_\@/_/c;
1990 return $string;
1991 }
1993 # Canonicalize a name, and check to make sure the non-canonical name
1994 # is never used. Returns canonical name. Arguments are name and a
1995 # list of suffixes to check for.
1996 sub check_canonical_spelling
1997 {
1998 my ($name, @suffixes) = @_;
2000 my $xname = &canonicalize ($name);
2001 if ($xname ne $name)
2002 {
2003 foreach my $xt (@suffixes)
2004 {
2005 reject_var ("$name$xt", "use `$xname$xt', not `$name$xt'");
2006 }
2007 }
2009 return $xname;
2010 }
2013 # handle_compile ()
2014 # -----------------
2015 # Set up the compile suite.
2016 sub handle_compile ()
2017 {
2018 return
2019 unless $get_object_extension_was_run;
2021 # Boilerplate.
2022 my $default_includes = '';
2023 if (! option 'nostdinc')
2024 {
2025 $default_includes = ' -I. -I$(srcdir)';
2027 my $var = var 'CONFIG_HEADER';
2028 if ($var)
2029 {
2030 foreach my $hdr (split (' ', $var->variable_value))
2031 {
2032 $default_includes .= ' -I' . dirname ($hdr);
2033 }
2034 }
2035 }
2037 my (@mostly_rms, @dist_rms);
2038 foreach my $item (sort keys %compile_clean_files)
2039 {
2040 if ($compile_clean_files{$item} == MOSTLY_CLEAN)
2041 {
2042 push (@mostly_rms, "\t-rm -f $item");
2043 }
2044 elsif ($compile_clean_files{$item} == DIST_CLEAN)
2045 {
2046 push (@dist_rms, "\t-rm -f $item");
2047 }
2048 else
2049 {
2050 prog_error 'invalid entry in %compile_clean_files';
2051 }
2052 }
2054 my ($coms, $vars, $rules) =
2055 &file_contents_internal (1, "$libdir/am/compile.am",
2056 new Automake::Location,
2057 ('DEFAULT_INCLUDES' => $default_includes,
2058 'MOSTLYRMS' => join ("\n", @mostly_rms),
2059 'DISTRMS' => join ("\n", @dist_rms)));
2060 $output_vars .= $vars;
2061 $output_rules .= "$coms$rules";
2063 # Check for automatic de-ANSI-fication.
2064 if (option 'ansi2knr')
2065 {
2066 my ($ansi2knr_filename, $ansi2knr_where) = @{option 'ansi2knr'};
2067 my $ansi2knr_dir = '';
2069 require_variables ($ansi2knr_where, "option `ansi2knr' is used",
2070 TRUE, "ANSI2KNR", "U");
2072 # topdir is where ansi2knr should be.
2073 if ($ansi2knr_filename eq 'ansi2knr')
2074 {
2075 # Only require ansi2knr files if they should appear in
2076 # this directory.
2077 require_file ($ansi2knr_where, FOREIGN,
2078 'ansi2knr.c', 'ansi2knr.1');
2080 # ansi2knr needs to be built before subdirs, so unshift it.
2081 unshift (@all, '$(ANSI2KNR)');
2082 }
2083 else
2084 {
2085 $ansi2knr_dir = dirname ($ansi2knr_filename);
2086 }
2088 $output_rules .= &file_contents ('ansi2knr',
2089 new Automake::Location,
2090 'ANSI2KNR-DIR' => $ansi2knr_dir);
2092 }
2093 }
2095 # handle_libtool ()
2096 # -----------------
2097 # Handle libtool rules.
2098 sub handle_libtool
2099 {
2100 return unless var ('LIBTOOL');
2102 # Libtool requires some files, but only at top level.
2103 require_conf_file_with_macro (TRUE, 'LIBTOOL', FOREIGN, @libtool_files)
2104 if $relative_dir eq '.';
2106 my @libtool_rms;
2107 foreach my $item (sort keys %libtool_clean_directories)
2108 {
2109 my $dir = ($item eq '.') ? '' : "$item/";
2110 # .libs is for Unix, _libs for DOS.
2111 push (@libtool_rms, "\t-rm -rf ${dir}.libs ${dir}_libs");
2112 }
2114 # Output the libtool compilation rules.
2115 $output_rules .= &file_contents ('libtool',
2116 new Automake::Location,
2117 LTRMS => join ("\n", @libtool_rms));
2118 }
2120 # handle_programs ()
2121 # ------------------
2122 # Handle C programs.
2123 sub handle_programs
2124 {
2125 my @proglist = &am_install_var ('progs', 'PROGRAMS',
2126 'bin', 'sbin', 'libexec', 'pkglib',
2127 'noinst', 'check');
2128 return if ! @proglist;
2130 my $seen_global_libobjs =
2131 var ('LDADD') && &handle_lib_objects ('', 'LDADD');
2133 foreach my $pair (@proglist)
2134 {
2135 my ($where, $one_file) = @$pair;
2137 my $seen_libobjs = 0;
2138 my $obj = &get_object_extension ($one_file);
2140 # Strip any $(EXEEXT) suffix the user might have added, or this
2141 # will confuse &handle_source_transform and &check_canonical_spelling.
2142 # We'll add $(EXEEXT) back later anyway.
2143 $one_file =~ s/\$\(EXEEXT\)$//;
2145 # Canonicalize names and check for misspellings.
2146 my $xname = &check_canonical_spelling ($one_file, '_LDADD', '_LDFLAGS',
2147 '_SOURCES', '_OBJECTS',
2148 '_DEPENDENCIES');
2150 $where->push_context ("while processing program `$one_file'");
2151 $where->set (INTERNAL->get);
2153 my $linker = &handle_source_transform ($xname, $one_file, $obj, $where);
2155 if (var ($xname . "_LDADD"))
2156 {
2157 $seen_libobjs = &handle_lib_objects ($xname, $xname . '_LDADD');
2158 }
2159 else
2160 {
2161 # User didn't define prog_LDADD override. So do it.
2162 &define_variable ($xname . '_LDADD', '$(LDADD)', $where);
2164 # This does a bit too much work. But we need it to
2165 # generate _DEPENDENCIES when appropriate.
2166 if (var ('LDADD'))
2167 {
2168 $seen_libobjs = &handle_lib_objects ($xname, 'LDADD');
2169 }
2170 }
2172 reject_var ($xname . '_LIBADD',
2173 "use `${xname}_LDADD', not `${xname}_LIBADD'");
2175 set_seen ($xname . '_DEPENDENCIES');
2176 set_seen ($xname . '_LDFLAGS');
2178 # Determine program to use for link.
2179 my $xlink;
2180 if (var ($xname . '_LINK'))
2181 {
2182 $xlink = $xname . '_LINK';
2183 }
2184 else
2185 {
2186 $xlink = $linker ? $linker : 'LINK';
2187 }
2189 # If the resulting program lies into a subdirectory,
2190 # make sure this directory will exist.
2191 my $dirstamp = require_build_directory_maybe ($one_file);
2193 $output_rules .= &file_contents ('program',
2194 $where,
2195 PROGRAM => $one_file,
2196 XPROGRAM => $xname,
2197 XLINK => $xlink,
2198 DIRSTAMP => $dirstamp,
2199 EXEEXT => '$(EXEEXT)');
2201 if ($seen_libobjs || $seen_global_libobjs)
2202 {
2203 if (var ($xname . '_LDADD'))
2204 {
2205 &check_libobjs_sources ($xname, $xname . '_LDADD');
2206 }
2207 elsif (var ('LDADD'))
2208 {
2209 &check_libobjs_sources ($xname, 'LDADD');
2210 }
2211 }
2212 }
2213 }
2216 # handle_libraries ()
2217 # -------------------
2218 # Handle libraries.
2219 sub handle_libraries
2220 {
2221 my @liblist = &am_install_var ('libs', 'LIBRARIES',
2222 'lib', 'pkglib', 'noinst', 'check');
2223 return if ! @liblist;
2225 my @prefix = am_primary_prefixes ('LIBRARIES', 0, 'lib', 'pkglib',
2226 'noinst', 'check');
2228 if (@prefix)
2229 {
2230 my $var = rvar ($prefix[0] . '_LIBRARIES');
2231 $var->requires_variables ('library used', 'RANLIB');
2232 }
2234 foreach my $pair (@liblist)
2235 {
2236 my ($where, $onelib) = @$pair;
2238 my $seen_libobjs = 0;
2239 # Check that the library fits the standard naming convention.
2240 if (basename ($onelib) !~ /^lib.*\.a/)
2241 {
2242 error $where, "`$onelib' is not a standard library name";
2243 }
2245 $where->push_context ("while processing library `$onelib'");
2246 $where->set (INTERNAL->get);
2248 my $obj = &get_object_extension ($onelib);
2250 # Canonicalize names and check for misspellings.
2251 my $xlib = &check_canonical_spelling ($onelib, '_LIBADD', '_SOURCES',
2252 '_OBJECTS', '_DEPENDENCIES',
2253 '_AR');
2255 if (! var ($xlib . '_AR'))
2256 {
2257 &define_variable ($xlib . '_AR', '$(AR) $(ARFLAGS)', $where);
2258 }
2260 # Generate support for conditional object inclusion in
2261 # libraries.
2262 if (var ($xlib . '_LIBADD'))
2263 {
2264 if (&handle_lib_objects ($xlib, $xlib . '_LIBADD'))
2265 {
2266 $seen_libobjs = 1;
2267 }
2268 }
2269 else
2270 {
2271 &define_variable ($xlib . "_LIBADD", '', $where);
2272 }
2274 reject_var ($xlib . '_LDADD',
2275 "use `${xlib}_LIBADD', not `${xlib}_LDADD'");
2277 # Make sure we at look at this.
2278 set_seen ($xlib . '_DEPENDENCIES');
2280 &handle_source_transform ($xlib, $onelib, $obj, $where);
2282 # If the resulting library lies into a subdirectory,
2283 # make sure this directory will exist.
2284 my $dirstamp = require_build_directory_maybe ($onelib);
2286 $output_rules .= &file_contents ('library',
2287 $where,
2288 LIBRARY => $onelib,
2289 XLIBRARY => $xlib,
2290 DIRSTAMP => $dirstamp);
2292 if ($seen_libobjs)
2293 {
2294 if (var ($xlib . '_LIBADD'))
2295 {
2296 &check_libobjs_sources ($xlib, $xlib . '_LIBADD');
2297 }
2298 }
2299 }
2300 }
2303 # handle_ltlibraries ()
2304 # ---------------------
2305 # Handle shared libraries.
2306 sub handle_ltlibraries
2307 {
2308 my @liblist = &am_install_var ('ltlib', 'LTLIBRARIES',
2309 'noinst', 'lib', 'pkglib', 'check');
2310 return if ! @liblist;
2312 my %instdirs;
2313 my @prefix = am_primary_prefixes ('LTLIBRARIES', 0, 'lib', 'pkglib',
2314 'noinst', 'check');
2316 if (@prefix)
2317 {
2318 my $var = rvar ($prefix[0] . '_LTLIBRARIES');
2319 $var->requires_variables ('Libtool library used', 'LIBTOOL');
2320 }
2322 my %liblocations = (); # Location (in Makefile.am) of each library.
2324 foreach my $key (@prefix)
2325 {
2326 # Get the installation directory of each library.
2327 (my $dir = $key) =~ s/^nobase_//;
2328 my $var = rvar ($key . '_LTLIBRARIES');
2329 for my $pair ($var->value_as_list_recursive (location => 1))
2330 {
2331 my ($where, $lib) = @$pair;
2332 # We reject libraries which are installed in several places,
2333 # because we don't handle this in the rules (think `-rpath').
2334 #
2335 # However, we allow the same library to be listed many times
2336 # for the same directory. This is for users who need setups
2337 # like
2338 # if COND1
2339 # lib_LTLIBRARIES = libfoo.la
2340 # endif
2341 # if COND2
2342 # lib_LTLIBRARIES = libfoo.la
2343 # endif
2344 #
2345 # Actually this will also allow
2346 # lib_LTLIBRARIES = libfoo.la libfoo.la
2347 # Diagnosing this case doesn't seem worth the plain (we'd
2348 # have to fill $instdirs on a per-condition basis, check
2349 # implied conditions, etc.)
2350 if (defined $instdirs{$lib} && $instdirs{$lib} ne $dir)
2351 {
2352 error ($where, "`$lib' is already going to be installed in "
2353 . "`$instdirs{$lib}'", partial => 1);
2354 error ($liblocations{$lib}, "`$lib' previously declared here");
2355 }
2356 else
2357 {
2358 $instdirs{$lib} = $dir;
2359 $liblocations{$lib} = $where->clone;
2360 }
2361 }
2362 }
2364 foreach my $pair (@liblist)
2365 {
2366 my ($where, $onelib) = @$pair;
2368 my $seen_libobjs = 0;
2369 my $obj = &get_object_extension ($onelib);
2371 # Canonicalize names and check for misspellings.
2372 my $xlib = &check_canonical_spelling ($onelib, '_LIBADD', '_LDFLAGS',
2373 '_SOURCES', '_OBJECTS',
2374 '_DEPENDENCIES');
2376 # Check that the library fits the standard naming convention.
2377 my $libname_rx = "^lib.*\.la";
2378 my $ldvar = var ("${xlib}_LDFLAGS") || var ('AM_LDFLAGS');
2379 my $ldvar2 = var ('LDFLAGS');
2380 if (($ldvar && grep (/-module/, $ldvar->value_as_list_recursive))
2381 || ($ldvar2 && grep (/-module/, $ldvar2->value_as_list_recursive)))
2382 {
2383 # Relax name checking for libtool modules.
2384 $libname_rx = "\.la";
2385 }
2386 if (basename ($onelib) !~ /$libname_rx$/)
2387 {
2388 msg ('error-gnu/warn', $where,
2389 "`$onelib' is not a standard libtool library name");
2390 }
2392 $where->push_context ("while processing Libtool library `$onelib'");
2393 $where->set (INTERNAL->get);
2395 # Make sure we at look at these.
2396 set_seen ($xlib . '_LDFLAGS');
2397 set_seen ($xlib . '_DEPENDENCIES');
2399 # Generate support for conditional object inclusion in
2400 # libraries.
2401 if (var ($xlib . '_LIBADD'))
2402 {
2403 if (&handle_lib_objects ($xlib, $xlib . '_LIBADD'))
2404 {
2405 $seen_libobjs = 1;
2406 }
2407 }
2408 else
2409 {
2410 &define_variable ($xlib . "_LIBADD", '', $where);
2411 }
2413 reject_var ("${xlib}_LDADD",
2414 "use `${xlib}_LIBADD', not `${xlib}_LDADD'");
2417 my $linker = &handle_source_transform ($xlib, $onelib, $obj, $where);
2419 # Determine program to use for link.
2420 my $xlink;
2421 if (var ($xlib . '_LINK'))
2422 {
2423 $xlink = $xlib . '_LINK';
2424 }
2425 else
2426 {
2427 $xlink = $linker ? $linker : 'LINK';
2428 }
2430 my $rpath;
2431 if ($instdirs{$onelib} eq 'EXTRA'
2432 || $instdirs{$onelib} eq 'noinst'
2433 || $instdirs{$onelib} eq 'check')
2434 {
2435 # It's an EXTRA_ library, so we can't specify -rpath,
2436 # because we don't know where the library will end up.
2437 # The user probably knows, but generally speaking automake
2438 # doesn't -- and in fact configure could decide
2439 # dynamically between two different locations.
2440 $rpath = '';
2441 }
2442 else
2443 {
2444 $rpath = ('-rpath $(' . $instdirs{$onelib} . 'dir)');
2445 }
2447 # If the resulting library lies into a subdirectory,
2448 # make sure this directory will exist.
2449 my $dirstamp = require_build_directory_maybe ($onelib);
2451 # Remember to cleanup .libs/ in this directory.
2452 my $dirname = dirname $onelib;
2453 $libtool_clean_directories{$dirname} = 1;
2455 $output_rules .= &file_contents ('ltlibrary',
2456 $where,
2457 LTLIBRARY => $onelib,
2458 XLTLIBRARY => $xlib,
2459 RPATH => $rpath,
2460 XLINK => $xlink,
2461 DIRSTAMP => $dirstamp);
2462 if ($seen_libobjs)
2463 {
2464 if (var ($xlib . '_LIBADD'))
2465 {
2466 &check_libobjs_sources ($xlib, $xlib . '_LIBADD');
2467 }
2468 }
2469 }
2470 }
2472 # See if any _SOURCES variable were misspelled.
2473 sub check_typos ()
2474 {
2475 # It is ok if the user sets this particular variable.
2476 set_seen 'AM_LDFLAGS';
2478 foreach my $var (variables)
2479 {
2480 my $varname = $var->name;
2481 # A configure variable is always legitimate.
2482 next if exists $configure_vars{$varname};
2484 my $check = 0;
2485 foreach my $primary ('_SOURCES', '_LIBADD', '_LDADD', '_LDFLAGS',
2486 '_DEPENDENCIES')
2487 {
2488 if ($varname =~ /$primary$/)
2489 {
2490 $check = 1;
2491 last;
2492 }
2493 }
2494 next unless $check;
2496 for my $cond ($var->conditions->conds)
2497 {
2498 msg_var 'syntax', $var, "unused variable: `$varname'"
2499 unless $var->rdef ($cond)->seen;
2500 }
2501 }
2502 }
2505 # Handle scripts.
2506 sub handle_scripts
2507 {
2508 # NOTE we no longer automatically clean SCRIPTS, because it is
2509 # useful to sometimes distribute scripts verbatim. This happens
2510 # e.g. in Automake itself.
2511 &am_install_var ('-candist', 'scripts', 'SCRIPTS',
2512 'bin', 'sbin', 'libexec', 'pkgdata',
2513 'noinst', 'check');
2514 }
2519 ## ------------------------ ##
2520 ## Handling Texinfo files. ##
2521 ## ------------------------ ##
2523 # ($OUTFILE, $VFILE, @CLEAN_FILES)
2524 # &scan_texinfo_file ($FILENAME)
2525 # ------------------------------
2526 # $OUTFILE - name of the info file produced by $FILENAME.
2527 # $VFILE - name of the version.texi file used (undef if none).
2528 # @CLEAN_FILES - list of byproducts (indexes etc.)
2529 sub scan_texinfo_file ($)
2530 {
2531 my ($filename) = @_;
2533 # Some of the following extensions are always created, no matter
2534 # whether indexes are used or not. Other (like cps, fns, ... pgs)
2535 # are only created when they are used. We used to scan $FILENAME
2536 # for their use, but that is not enough: they could be used in
2537 # included files. We can't scan included files because we don't
2538 # know the include path. Therefore we always erase these files, no
2539 # matter whether they are used or not.
2540 #
2541 # (tmp is only created if an @macro is used and a certain e-TeX
2542 # feature is not available.)
2543 my %clean_suffixes =
2544 map { $_ => 1 } (qw(aux log toc tmp
2545 cp cps
2546 fn fns
2547 ky kys
2548 vr vrs
2549 tp tps
2550 pg pgs)); # grep 'new.*index' texinfo.tex
2552 my $texi = new Automake::XFile "< $filename";
2553 verb "reading $filename";
2555 my ($outfile, $vfile);
2556 while ($_ = $texi->getline)
2557 {
2558 if (/^\@setfilename +(\S+)/)
2559 {
2560 # Honor only the first @setfilename. (It's possible to have
2561 # more occurrences later if the manual shows examples of how
2562 # to use @setfilename...)
2563 next if $outfile;
2565 $outfile = $1;
2566 if ($outfile =~ /\.(.+)$/ && $1 ne 'info')
2567 {
2568 error ("$filename:$.",
2569 "output `$outfile' has unrecognized extension");
2570 return;
2571 }
2572 }
2573 # A "version.texi" file is actually any file whose name matches
2574 # "vers*.texi".
2575 elsif (/^\@include\s+(vers[^.]*\.texi)\s*$/)
2576 {
2577 $vfile = $1;
2578 }
2580 # Try to find new or unused indexes.
2582 # Creating a new category of index.
2583 elsif (/^\@def(code)?index (\w+)/)
2584 {
2585 $clean_suffixes{$2} = 1;
2586 $clean_suffixes{"$2s"} = 1;
2587 }
2589 # Merging an index into an another.
2590 elsif (/^\@syn(code)?index (\w+) (\w+)/)
2591 {
2592 delete $clean_suffixes{"$2s"};
2593 $clean_suffixes{"$3s"} = 1;
2594 }
2596 }
2598 if (! $outfile)
2599 {
2600 err_am "`$filename' missing \@setfilename";
2601 return;
2602 }
2604 my $infobase = basename ($filename);
2605 $infobase =~ s/\.te?xi(nfo)?$//;
2606 return ($outfile, $vfile,
2607 map { "$infobase.$_" } (sort keys %clean_suffixes));
2608 }
2611 # ($DIRSTAMP, @CLEAN_FILES)
2612 # output_texinfo_build_rules ($SOURCE, $DEST, $INSRC, @DEPENDENCIES)
2613 # ------------------------------------------------------------------
2614 # SOURCE - the source Texinfo file
2615 # DEST - the destination Info file
2616 # INSRC - wether DEST should be built in the source tree
2617 # DEPENDENCIES - known dependencies
2618 sub output_texinfo_build_rules ($$$@)
2619 {
2620 my ($source, $dest, $insrc, @deps) = @_;
2622 # Split `a.texi' into `a' and `.texi'.
2623 my ($spfx, $ssfx) = ($source =~ /^(.*?)(\.[^.]*)?$/);
2624 my ($dpfx, $dsfx) = ($dest =~ /^(.*?)(\.[^.]*)?$/);
2626 $ssfx ||= "";
2627 $dsfx ||= "";
2629 # We can output two kinds of rules: the "generic" rules use Make
2630 # suffix rules and are appropriate when $source and $dest do not lie
2631 # in a sub-directory; the "specific" rules are needed in the other
2632 # case.
2633 #
2634 # The former are output only once (this is not really apparent here,
2635 # but just remember that some logic deeper in Automake will not
2636 # output the same rule twice); while the later need to be output for
2637 # each Texinfo source.
2638 my $generic;
2639 my $makeinfoflags;
2640 my $sdir = dirname $source;
2641 if ($sdir eq '.' && dirname ($dest) eq '.')
2642 {
2643 $generic = 1;
2644 $makeinfoflags = '-I $(srcdir)';
2645 }
2646 else
2647 {
2648 $generic = 0;
2649 $makeinfoflags = "-I $sdir -I \$(srcdir)/$sdir";
2650 }
2652 # A directory can contain two kinds of info files: some built in the
2653 # source tree, and some built in the build tree. The rules are
2654 # different in each case. However we cannot output two different
2655 # set of generic rules. Because in-source builds are more usual, we
2656 # use generic rules in this case and fall back to "specific" rules
2657 # for build-dir builds. (It should not be a problem to invert this
2658 # if needed.)
2659 $generic = 0 unless $insrc;
2661 # We cannot use a suffix rule to build info files with an empty
2662 # extension. Otherwise we would output a single suffix inference
2663 # rule, with separate dependencies, as in
2664 #
2665 # .texi:
2666 # $(MAKEINFO) ...
2667 # foo.info: foo.texi
2668 #
2669 # which confuse Solaris make. (See the Autoconf manual for
2670 # details.) Therefore we use a specific rule in this case. This
2671 # applies to info files only (dvi and pdf files always have an
2672 # extension).
2673 my $generic_info = ($generic && $dsfx) ? 1 : 0;
2675 # If the resulting file lie into a subdirectory,
2676 # make sure this directory will exist.
2677 my $dirstamp = require_build_directory_maybe ($dest);
2679 my $dipfx = ($insrc ? '$(srcdir)/' : '') . $dpfx;
2681 $output_rules .= file_contents ('texibuild',
2682 new Automake::Location,
2683 DEPS => "@deps",
2684 DEST_PREFIX => $dpfx,
2685 DEST_INFO_PREFIX => $dipfx,
2686 DEST_SUFFIX => $dsfx,
2687 DIRSTAMP => $dirstamp,
2688 GENERIC => $generic,
2689 GENERIC_INFO => $generic_info,
2690 INSRC => $insrc,
2691 MAKEINFOFLAGS => $makeinfoflags,
2692 SOURCE => ($generic
2693 ? '$<' : $source),
2694 SOURCE_INFO => ($generic_info
2695 ? '$<' : $source),
2696 SOURCE_REAL => $source,
2697 SOURCE_SUFFIX => $ssfx,
2698 );
2699 return ($dirstamp, "$dpfx.dvi", "$dpfx.pdf", "$dpfx.ps", "$dpfx.html");
2700 }
2703 # $TEXICLEANS
2704 # handle_texinfo_helper ($info_texinfos)
2705 # --------------------------------------
2706 # Handle all Texinfo source; helper for handle_texinfo.
2707 sub handle_texinfo_helper ($)
2708 {
2709 my ($info_texinfos) = @_;
2710 my (@infobase, @info_deps_list, @texi_deps);
2711 my %versions;
2712 my $done = 0;
2713 my @texi_cleans;
2715 # Build a regex matching user-cleaned files.
2716 my $d = var 'DISTCLEANFILES';
2717 my $c = var 'CLEANFILES';
2718 my @f = ();
2719 push @f, $d->value_as_list_recursive (inner_expand => 1) if $d;
2720 push @f, $c->value_as_list_recursive (inner_expand => 1) if $c;
2721 @f = map { s|[^A-Za-z_0-9*\[\]\-]|\\$&|g; s|\*|[^/]*|g; $_; } @f;
2722 my $user_cleaned_files = '^(?:' . join ('|', @f) . ')$';
2724 foreach my $texi
2725 ($info_texinfos->value_as_list_recursive (inner_expand => 1))
2726 {
2727 my $infobase = $texi;
2728 $infobase =~ s/\.(txi|texinfo|texi)$//;
2730 if ($infobase eq $texi)
2731 {
2732 # FIXME: report line number.
2733 err_am "texinfo file `$texi' has unrecognized extension";
2734 next;
2735 }
2737 push @infobase, $infobase;
2739 # If 'version.texi' is referenced by input file, then include
2740 # automatic versioning capability.
2741 my ($out_file, $vtexi, @clean_files) =
2742 scan_texinfo_file ("$relative_dir/$texi")
2743 or next;
2744 push (@texi_cleans, @clean_files);
2746 # If the Texinfo source is in a subdirectory, create the
2747 # resulting info in this subdirectory. If it is in the current
2748 # directory, try hard to not prefix "./" because it breaks the
2749 # generic rules.
2750 my $outdir = dirname ($texi) . '/';
2751 $outdir = "" if $outdir eq './';
2752 $out_file = $outdir . $out_file;
2754 # Until Automake 1.6.3, .info files were built in the
2755 # source tree. This was an obstacle to the support of
2756 # non-distributed .info files, and non-distributed .texi
2757 # files.
2758 #
2759 # * Non-distributed .texi files is important in some packages
2760 # where .texi files are built at make time, probably using
2761 # other binaries built in the package itself, maybe using
2762 # tools or information found on the build host. Because
2763 # these files are not distributed they are always rebuilt
2764 # at make time; they should therefore not lie in the source
2765 # directory. One plan was to support this using
2766 # nodist_info_TEXINFOS or something similar. (Doing this
2767 # requires some sanity checks. For instance Automake should
2768 # not allow:
2769 # dist_info_TEXINFO = foo.texi
2770 # nodist_foo_TEXINFO = included.texi
2771 # because a distributed file should never depend on a
2772 # non-distributed file.)
2773 #
2774 # * If .texi files are not distributed, then .info files should
2775 # not be distributed either. There are also cases where one
2776 # want to distribute .texi files, but do not want to
2777 # distribute the .info files. For instance the Texinfo package
2778 # distributes the tool used to build these files; it would
2779 # be a waste of space to distribute them. It's not clear
2780 # which syntax we should use to indicate that .info files should
2781 # not be distributed. Akim Demaille suggested that eventually
2782 # we switch to a new syntax:
2783 # | Maybe we should take some inspiration from what's already
2784 # | done in the rest of Automake. Maybe there is too much
2785 # | syntactic sugar here, and you want
2786 # | nodist_INFO = bar.info
2787 # | dist_bar_info_SOURCES = bar.texi
2788 # | bar_texi_DEPENDENCIES = foo.texi
2789 # | with a bit of magic to have bar.info represent the whole
2790 # | bar*info set. That's a lot more verbose that the current
2791 # | situation, but it is # not new, hence the user has less
2792 # | to learn.
2793 # |
2794 # | But there is still too much room for meaningless specs:
2795 # | nodist_INFO = bar.info
2796 # | dist_bar_info_SOURCES = bar.texi
2797 # | dist_PS = bar.ps something-written-by-hand.ps
2798 # | nodist_bar_ps_SOURCES = bar.texi
2799 # | bar_texi_DEPENDENCIES = foo.texi
2800 # | here bar.texi is dist_ in line 2, and nodist_ in 4.
2801 #
2802 # Back to the point, it should be clear that in order to support
2803 # non-distributed .info files, we need to build them in the
2804 # build tree, not in the source tree (non-distributed .texi
2805 # files are less of a problem, because we do not output build
2806 # rules for them). In Automake 1.7 .info build rules have been
2807 # largely cleaned up so that .info files get always build in the
2808 # build tree, even when distributed. The idea was that
2809 # (1) if during a VPATH build the .info file was found to be
2810 # absent or out-of-date (in the source tree or in the
2811 # build tree), Make would rebuild it in the build tree.
2812 # If an up-to-date source-tree of the .info file existed,
2813 # make would not rebuild it in the build tree.
2814 # (2) having two copies of .info files, one in the source tree
2815 # and one (newer) in the build tree is not a problem
2816 # because `make dist' always pick files in the build tree
2817 # first.
2818 # However it turned out the be a bad idea for several reasons:
2819 # * Tru64, OpenBSD, and FreeBSD (not NetBSD) Make do behave
2820 # like GNU Make on point (1) above. These implementations
2821 # of Make would always rebuild .info files in the build
2822 # tree, even if such files were up to date in the source
2823 # tree. Consequently, it was impossible the perform a VPATH
2824 # build of a package containing Texinfo files using these
2825 # Make implementations.
2826 # (Refer to the Autoconf Manual, section "Limitation of
2827 # Make", paragraph "VPATH", item "target lookup", for
2828 # an account of the differences between these
2829 # implementations.)
2830 # * The GNU Coding Standards require these files to be built
2831 # in the source-tree (when they are distributed, that is).
2832 # * Keeping a fresher copy of distributed files in the
2833 # build tree can be annoying during development because
2834 # - if the files is kept under CVS, you really want it
2835 # to be updated in the source tree
2836 # - it os confusing that `make distclean' does not erase
2837 # all files in the build tree.
2838 #
2839 # Consequently, starting with Automake 1.8, .info files are
2840 # built in the source tree again. Because we still plan to
2841 # support non-distributed .info files at some point, we
2842 # have a single variable ($INSRC) that controls whether
2843 # the current .info file must be built in the source tree
2844 # or in the build tree. Actually this variable is switched
2845 # off for .info files that appear to be cleaned; this is
2846 # for backward compatibility with package such as Texinfo,
2847 # which do things like
2848 # info_TEXINFOS = texinfo.txi info-stnd.texi info.texi
2849 # DISTCLEANFILES = texinfo texinfo-* info*.info*
2850 # # Do not create info files for distribution.
2851 # dist-info:
2852 # in order not to distribute .info files.
2853 my $insrc = ($out_file =~ $user_cleaned_files) ? 0 : 1;
2855 my $soutdir = '$(srcdir)/' . $outdir;
2856 $outdir = $soutdir if $insrc;
2858 # If user specified file_TEXINFOS, then use that as explicit
2859 # dependency list.
2860 @texi_deps = ();
2861 push (@texi_deps, "$soutdir$vtexi") if $vtexi;
2863 my $canonical = canonicalize ($infobase);
2864 if (var ($canonical . "_TEXINFOS"))
2865 {
2866 push (@texi_deps, '$(' . $canonical . '_TEXINFOS)');
2867 push_dist_common ('$(' . $canonical . '_TEXINFOS)');
2868 }
2870 my ($dirstamp, @cfiles) =
2871 output_texinfo_build_rules ($texi, $out_file, $insrc, @texi_deps);
2872 push (@texi_cleans, @cfiles);
2874 push (@info_deps_list, $out_file);
2876 # If a vers*.texi file is needed, emit the rule.
2877 if ($vtexi)
2878 {
2879 err_am ("`$vtexi', included in `$texi', "
2880 . "also included in `$versions{$vtexi}'")
2881 if defined $versions{$vtexi};
2882 $versions{$vtexi} = $texi;
2884 # We number the stamp-vti files. This is doable since the
2885 # actual names don't matter much. We only number starting
2886 # with the second one, so that the common case looks nice.
2887 my $vti = ($done ? $done : 'vti');
2888 ++$done;
2890 # This is ugly, but it is our historical practice.
2891 if ($config_aux_dir_set_in_configure_in)
2892 {
2893 require_conf_file_with_macro (TRUE, 'info_TEXINFOS', FOREIGN,
2894 'mdate-sh');
2895 }
2896 else
2897 {
2898 require_file_with_macro (TRUE, 'info_TEXINFOS',
2899 FOREIGN, 'mdate-sh');
2900 }
2902 my $conf_dir;
2903 if ($config_aux_dir_set_in_configure_in)
2904 {
2905 $conf_dir = $config_aux_dir;
2906 $conf_dir .= '/' unless $conf_dir =~ /\/$/;
2907 }
2908 else
2909 {
2910 $conf_dir = '$(srcdir)/';
2911 }
2912 $output_rules .= file_contents ('texi-vers',
2913 new Automake::Location,
2914 TEXI => $texi,
2915 VTI => $vti,
2916 STAMPVTI => "${soutdir}stamp-$vti",
2917 VTEXI => "$soutdir$vtexi",
2918 MDDIR => $conf_dir,
2919 DIRSTAMP => $dirstamp);
2920 }
2921 }
2923 # Handle location of texinfo.tex.
2924 my $need_texi_file = 0;
2925 my $texinfodir;
2926 if (var ('TEXINFO_TEX'))
2927 {
2928 # The user defined TEXINFO_TEX so assume he knows what he is
2929 # doing.
2930 $texinfodir = ('$(srcdir)/'
2931 . dirname (variable_value ('TEXINFO_TEX')));
2932 }
2933 elsif (option 'cygnus')
2934 {
2935 $texinfodir = '$(top_srcdir)/../texinfo';
2936 define_variable ('TEXINFO_TEX', "$texinfodir/texinfo.tex", INTERNAL);
2937 }
2938 elsif ($config_aux_dir_set_in_configure_in)
2939 {
2940 $texinfodir = $config_aux_dir;
2941 define_variable ('TEXINFO_TEX', "$texinfodir/texinfo.tex", INTERNAL);
2942 $need_texi_file = 2; # so that we require_conf_file later
2943 }
2944 else
2945 {
2946 $texinfodir = '$(srcdir)';
2947 $need_texi_file = 1;
2948 }
2949 define_variable ('am__TEXINFO_TEX_DIR', $texinfodir, INTERNAL);
2951 push (@dist_targets, 'dist-info');
2953 if (! option 'no-installinfo')
2954 {
2955 # Make sure documentation is made and installed first. Use
2956 # $(INFO_DEPS), not 'info', because otherwise recursive makes
2957 # get run twice during "make all".
2958 unshift (@all, '$(INFO_DEPS)');
2959 }
2961 define_files_variable ("DVIS", @infobase, 'dvi', INTERNAL);
2962 define_files_variable ("PDFS", @infobase, 'pdf', INTERNAL);
2963 define_files_variable ("PSS", @infobase, 'ps', INTERNAL);
2964 define_files_variable ("HTMLS", @infobase, 'html', INTERNAL);
2966 # This next isn't strictly needed now -- the places that look here
2967 # could easily be changed to look in info_TEXINFOS. But this is
2968 # probably better, in case noinst_TEXINFOS is ever supported.
2969 define_variable ("TEXINFOS", variable_value ('info_TEXINFOS'), INTERNAL);
2971 # Do some error checking. Note that this file is not required
2972 # when in Cygnus mode; instead we defined TEXINFO_TEX explicitly
2973 # up above.
2974 if ($need_texi_file && ! option 'no-texinfo.tex')
2975 {
2976 if ($need_texi_file > 1)
2977 {
2978 require_conf_file_with_macro (TRUE, 'info_TEXINFOS', FOREIGN,
2979 'texinfo.tex');
2980 }
2981 else
2982 {
2983 require_file_with_macro (TRUE, 'info_TEXINFOS', FOREIGN,
2984 'texinfo.tex');
2985 }
2986 }
2988 return makefile_wrap ("", "\t ", @texi_cleans);
2989 }
2992 # handle_texinfo ()
2993 # -----------------
2994 # Handle all Texinfo source.
2995 sub handle_texinfo ()
2996 {
2997 reject_var 'TEXINFOS', "`TEXINFOS' is an anachronism; use `info_TEXINFOS'";
2998 # FIXME: I think this is an obsolete future feature name.
2999 reject_var 'html_TEXINFOS', "HTML generation not yet supported";
3001 my $info_texinfos = var ('info_TEXINFOS');
3002 my $texiclean = "";
3003 if ($info_texinfos)
3004 {
3005 $texiclean = handle_texinfo_helper ($info_texinfos);
3006 }
3007 $output_rules .= file_contents ('texinfos',
3008 new Automake::Location,
3009 TEXICLEAN => $texiclean,
3010 'LOCAL-TEXIS' => !!$info_texinfos);
3011 }
3014 # Handle any man pages.
3015 sub handle_man_pages
3016 {
3017 reject_var 'MANS', "`MANS' is an anachronism; use `man_MANS'";
3019 # Find all the sections in use. We do this by first looking for
3020 # "standard" sections, and then looking for any additional
3021 # sections used in man_MANS.
3022 my (%sections, %vlist);
3023 # We handle nodist_ for uniformity. man pages aren't distributed
3024 # by default so it isn't actually very important.
3025 foreach my $pfx ('', 'dist_', 'nodist_')
3026 {
3027 # Add more sections as needed.
3028 foreach my $section ('0'..'9', 'n', 'l')
3029 {
3030 my $varname = $pfx . 'man' . $section . '_MANS';
3031 if (var ($varname))
3032 {
3033 $sections{$section} = 1;
3034 $varname = '$(' . $varname . ')';
3035 $vlist{$varname} = 1;
3037 &push_dist_common ($varname)
3038 if $pfx eq 'dist_';
3039 }
3040 }
3042 my $varname = $pfx . 'man_MANS';
3043 my $var = var ($varname);
3044 if ($var)
3045 {
3046 foreach ($var->value_as_list_recursive)
3047 {
3048 # A page like `foo.1c' goes into man1dir.
3049 if (/\.([0-9a-z])([a-z]*)$/)
3050 {
3051 $sections{$1} = 1;
3052 }
3053 }
3055 $varname = '$(' . $varname . ')';
3056 $vlist{$varname} = 1;
3057 &push_dist_common ($varname)
3058 if $pfx eq 'dist_';
3059 }
3060 }
3062 return unless %sections;
3064 # Now for each section, generate an install and uninstall rule.
3065 # Sort sections so output is deterministic.
3066 foreach my $section (sort keys %sections)
3067 {
3068 $output_rules .= &file_contents ('mans',
3069 new Automake::Location,
3070 SECTION => $section);
3071 }
3073 my @mans = sort keys %vlist;
3074 $output_vars .= file_contents ('mans-vars',
3075 new Automake::Location,
3076 MANS => "@mans");
3078 push (@all, '$(MANS)')
3079 unless option 'no-installman';
3080 }
3082 # Handle DATA variables.
3083 sub handle_data
3084 {
3085 &am_install_var ('-noextra', '-candist', 'data', 'DATA',
3086 'data', 'sysconf', 'sharedstate', 'localstate',
3087 'pkgdata', 'lisp', 'noinst', 'check');
3088 }
3090 # Handle TAGS.
3091 sub handle_tags
3092 {
3093 my @tag_deps = ();
3094 my @ctag_deps = ();
3095 if (var ('SUBDIRS'))
3096 {
3097 $output_rules .= ("tags-recursive:\n"
3098 . "\tlist=\'\$(SUBDIRS)\'; for subdir in \$\$list; do \\\n"
3099 # Never fail here if a subdir fails; it
3100 # isn't important.
3101 . "\t test \"\$\$subdir\" = . || (cd \$\$subdir"
3102 . " && \$(MAKE) \$(AM_MAKEFLAGS) tags); \\\n"
3103 . "\tdone\n");
3104 push (@tag_deps, 'tags-recursive');
3105 &depend ('.PHONY', 'tags-recursive');
3107 $output_rules .= ("ctags-recursive:\n"
3108 . "\tlist=\'\$(SUBDIRS)\'; for subdir in \$\$list; do \\\n"
3109 # Never fail here if a subdir fails; it
3110 # isn't important.
3111 . "\t test \"\$\$subdir\" = . || (cd \$\$subdir"
3112 . " && \$(MAKE) \$(AM_MAKEFLAGS) ctags); \\\n"
3113 . "\tdone\n");
3114 push (@ctag_deps, 'ctags-recursive');
3115 &depend ('.PHONY', 'ctags-recursive');
3116 }
3118 if (&saw_sources_p (1)
3119 || var ('ETAGS_ARGS')
3120 || @tag_deps)
3121 {
3122 my @config;
3123 foreach my $spec (@config_headers)
3124 {
3125 my ($out, @ins) = split_config_file_spec ($spec);
3126 foreach my $in (@ins)
3127 {
3128 # If the config header source is in this directory,
3129 # require it.
3130 push @config, basename ($in)
3131 if $relative_dir eq dirname ($in);
3132 }
3133 }
3134 $output_rules .= &file_contents ('tags',
3135 new Automake::Location,
3136 CONFIG => "@config",
3137 TAGSDIRS => "@tag_deps",
3138 CTAGSDIRS => "@ctag_deps");
3140 set_seen 'TAGS_DEPENDENCIES';
3141 }
3142 elsif (reject_var ('TAGS_DEPENDENCIES',
3143 "doesn't make sense to define `TAGS_DEPENDENCIES'"
3144 . "without\nsources or `ETAGS_ARGS'"))
3145 {
3146 }
3147 else
3148 {
3149 # Every Makefile must define some sort of TAGS rule.
3150 # Otherwise, it would be possible for a top-level "make TAGS"
3151 # to fail because some subdirectory failed.
3152 $output_rules .= "tags: TAGS\nTAGS:\n\n";
3153 # Ditto ctags.
3154 $output_rules .= "ctags: CTAGS\nCTAGS:\n\n";
3155 }
3156 }
3158 # Handle multilib support.
3159 sub handle_multilib
3160 {
3161 if ($seen_multilib && $relative_dir eq '.')
3162 {
3163 $output_rules .= &file_contents ('multilib', new Automake::Location);
3164 push (@all, 'all-multi');
3165 }
3166 }
3169 # $BOOLEAN
3170 # &for_dist_common ($A, $B)
3171 # -------------------------
3172 # Subroutine for &handle_dist: sort files to dist.
3173 #
3174 # We put README first because it then becomes easier to make a
3175 # Usenet-compliant shar file (in these, README must be first).
3176 #
3177 # FIXME: do more ordering of files here.
3178 sub for_dist_common
3179 {
3180 return 0
3181 if $a eq $b;
3182 return -1
3183 if $a eq 'README';
3184 return 1
3185 if $b eq 'README';
3186 return $a cmp $b;
3187 }
3190 # handle_dist
3191 # -----------
3192 # Handle 'dist' target.
3193 sub handle_dist ()
3194 {
3195 return if option 'no-dist';
3197 # At least one of the archive formats must be enabled.
3198 if ($relative_dir eq '.')
3199 {
3200 my $archive_defined = option 'no-dist-gzip' ? 0 : 1;
3201 $archive_defined ||=
3202 grep { option "dist-$_" } ('shar', 'zip', 'tarZ', 'bzip2');
3203 error (option 'no-dist-gzip',
3204 "no-dist-gzip specified but no dist-* specified, "
3205 . "at least one archive format must be enabled")
3206 unless $archive_defined;
3207 }
3209 # Look for common files that should be included in distribution.
3210 # If the aux dir is set, and it does not have a Makefile.am, then
3211 # we check for these files there as well.
3212 my $check_aux = 0;
3213 my $auxdir = '';
3214 if ($relative_dir eq '.'
3215 && $config_aux_dir_set_in_configure_in)
3216 {
3217 ($auxdir = $config_aux_dir) =~ s,^\$\(top_srcdir\)/,,;
3218 if (! &is_make_dir ($auxdir))
3219 {
3220 $check_aux = 1;
3221 }
3222 }
3223 foreach my $cfile (@common_files)
3224 {
3225 if (-f ($relative_dir . "/" . $cfile)
3226 # The file might be absent, but if it can be built it's ok.
3227 || rule $cfile)
3228 {
3229 &push_dist_common ($cfile);
3230 }
3232 # Don't use `elsif' here because a file might meaningfully
3233 # appear in both directories.
3234 if ($check_aux && -f ($auxdir . '/' . $cfile))
3235 {
3236 &push_dist_common ($auxdir . '/' . $cfile);
3237 }
3238 }
3240 # We might copy elements from $configure_dist_common to
3241 # %dist_common if we think we need to. If the file appears in our
3242 # directory, we would have discovered it already, so we don't
3243 # check that. But if the file is in a subdir without a Makefile,
3244 # we want to distribute it here if we are doing `.'. Ugly!
3245 if ($relative_dir eq '.')
3246 {
3247 foreach my $file (split (' ' , $configure_dist_common))
3248 {
3249 push_dist_common ($file)
3250 unless is_make_dir (dirname ($file));
3251 }
3252 }
3254 # Files to distributed. Don't use ->value_as_list_recursive
3255 # as it recursively expands `$(dist_pkgdata_DATA)' etc.
3256 my @dist_common = split (' ', rvar ('DIST_COMMON')->variable_value);
3257 @dist_common = uniq (sort for_dist_common (@dist_common));
3258 variable_delete 'DIST_COMMON';
3259 define_pretty_variable ('DIST_COMMON', TRUE, INTERNAL, @dist_common);
3261 # Now that we've processed DIST_COMMON, disallow further attempts
3262 # to set it.
3263 $handle_dist_run = 1;
3265 # Scan EXTRA_DIST to see if we need to distribute anything from a
3266 # subdir. If so, add it to the list. I didn't want to do this
3267 # originally, but there were so many requests that I finally
3268 # relented.
3269 my $extra_dist = var ('EXTRA_DIST');
3270 if ($extra_dist)
3271 {
3272 # FIXME: This should be fixed to work with conditions. That
3273 # will require only making the entries in %dist_dirs under the
3274 # appropriate condition. This is meaningful if the nature of
3275 # the distribution should depend upon the configure options
3276 # used.
3277 foreach ($extra_dist->value_as_list_recursive)
3278 {
3279 next if /^\@.*\@$/;
3280 next unless s,/+[^/]+$,,;
3281 $dist_dirs{$_} = 1
3282 unless $_ eq '.';
3283 }
3284 }
3286 # We have to check DIST_COMMON for extra directories in case the
3287 # user put a source used in AC_OUTPUT into a subdir.
3288 my $topsrcdir = backname ($relative_dir);
3289 foreach (rvar ('DIST_COMMON')->value_as_list_recursive)
3290 {
3291 next if /^\@.*\@$/;
3292 s/\$\(top_srcdir\)/$topsrcdir/;
3293 s/\$\(srcdir\)/./;
3294 # Strip any leading `./'.
3295 s,^(:?\./+)*,,;
3296 next unless s,/+[^/]+$,,;
3297 $dist_dirs{$_} = 1
3298 unless $_ eq '.';
3299 }
3301 # Rule to check whether a distribution is viable.
3302 my %transform = ('DISTCHECK-HOOK' => !! rule 'distcheck-hook',
3303 'GETTEXT' => $seen_gettext && !$seen_gettext_external);
3305 # Prepend $(distdir) to each directory given.
3306 my %rewritten = map { '$(distdir)/' . "$_" => 1 } keys %dist_dirs;
3307 $transform{'DISTDIRS'} = join (' ', sort keys %rewritten);
3309 # If we have SUBDIRS, create all dist subdirectories and do
3310 # recursive build.
3311 my $subdirs = var ('SUBDIRS');
3312 if ($subdirs)
3313 {
3314 # If SUBDIRS is conditionally defined, then set DIST_SUBDIRS
3315 # to all possible directories, and use it. If DIST_SUBDIRS is
3316 # defined, just use it.
3317 my $dist_subdir_name;
3318 # Note that we check DIST_SUBDIRS first on purpose, so that
3319 # we don't call has_conditional_contents for now reason.
3320 # (In the past one project used so many conditional subdirectories
3321 # that calling has_conditional_contents on SUBDIRS caused
3322 # automake to grow to 150Mb -- this should not happen with
3323 # the current implementation of has_conditional_contents,
3324 # but it's more efficient to avoid the call anyway.)
3325 if (var ('DIST_SUBDIRS'))
3326 {
3327 $dist_subdir_name = 'DIST_SUBDIRS';
3328 }
3329 elsif ($subdirs->has_conditional_contents)
3330 {
3331 $dist_subdir_name = 'DIST_SUBDIRS';
3332 define_pretty_variable
3333 ('DIST_SUBDIRS', TRUE, INTERNAL,
3334 uniq ($subdirs->value_as_list_recursive));
3335 }
3336 else
3337 {
3338 $dist_subdir_name = 'SUBDIRS';
3339 # We always define this because that is what `distclean'
3340 # wants.
3341 define_pretty_variable ('DIST_SUBDIRS', TRUE, INTERNAL,
3342 '$(SUBDIRS)');
3343 }
3345 $transform{'DIST_SUBDIR_NAME'} = $dist_subdir_name;
3346 }
3348 # If the target `dist-hook' exists, make sure it is run. This
3349 # allows users to do random weird things to the distribution
3350 # before it is packaged up.
3351 push (@dist_targets, 'dist-hook')
3352 if rule 'dist-hook';
3353 $transform{'DIST-TARGETS'} = join(' ', @dist_targets);
3355 $output_rules .= &file_contents ('distdir',
3356 new Automake::Location,
3357 %transform);
3358 }
3361 # &handle_subdirs ()
3362 # ------------------
3363 # Handle subdirectories.
3364 sub handle_subdirs ()
3365 {
3366 my $subdirs = var ('SUBDIRS');
3367 return
3368 unless $subdirs;
3370 my @subdirs = $subdirs->value_as_list_recursive;
3371 my @dsubdirs = ();
3372 my $dsubdirs = var ('DIST_SUBDIRS');
3373 @dsubdirs = $dsubdirs->value_as_list_recursive
3374 if $dsubdirs;
3376 # If an `obj/' directory exists, BSD make will enter it before
3377 # reading `Makefile'. Hence the `Makefile' in the current directory
3378 # will not be read.
3379 #
3380 # % cat Makefile
3381 # all:
3382 # echo Hello
3383 # % cat obj/Makefile
3384 # all:
3385 # echo World
3386 # % make # GNU make
3387 # echo Hello
3388 # Hello
3389 # % pmake # BSD make
3390 # echo World
3391 # World
3392 msg_var ('portability', 'SUBDIRS',
3393 "naming a subdirectory `obj' causes troubles with BSD make")
3394 if grep ($_ eq 'obj', @subdirs);
3395 msg_var ('portability', 'DIST_SUBDIRS',
3396 "naming a subdirectory `obj' causes troubles with BSD make")
3397 if grep ($_ eq 'obj', @dsubdirs);
3399 # Make sure each directory mentioned in SUBDIRS actually exists.
3400 foreach my $dir (@subdirs)
3401 {
3402 # Skip directories substituted by configure.
3403 next if $dir =~ /^\@.*\@$/;
3405 if (! -d $relative_dir . '/' . $dir)
3406 {
3407 err_var ('SUBDIRS', "required directory $relative_dir/$dir "
3408 . "does not exist");
3409 next;
3410 }
3412 err_var 'SUBDIRS', "directory should not contain `/'"
3413 if $dir =~ /\//;
3414 }
3416 $output_rules .= &file_contents ('subdirs', new Automake::Location);
3417 rvar ('RECURSIVE_TARGETS')->rdef (TRUE)->{'pretty'} = VAR_SORTED; # Gross!
3418 }
3421 # ($REGEN, @DEPENDENCIES)
3422 # &scan_aclocal_m4
3423 # ----------------
3424 # If aclocal.m4 creation is automated, return the list of its dependencies.
3425 sub scan_aclocal_m4 ()
3426 {
3427 my $regen_aclocal = 0;
3429 set_seen 'CONFIG_STATUS_DEPENDENCIES';
3430 set_seen 'CONFIGURE_DEPENDENCIES';
3432 if (-f 'aclocal.m4')
3433 {
3434 &define_variable ("ACLOCAL_M4", '$(top_srcdir)/aclocal.m4', INTERNAL);
3436 my $aclocal = new Automake::XFile "< aclocal.m4";
3437 my $line = $aclocal->getline;
3438 $regen_aclocal = $line =~ 'generated automatically by aclocal';
3439 }
3441 my @ac_deps = ();
3443 if (set_seen ('ACLOCAL_M4_SOURCES'))
3444 {
3445 push (@ac_deps, '$(ACLOCAL_M4_SOURCES)');
3446 msg_var ('obsolete', 'ACLOCAL_M4_SOURCES',
3447 "`ACLOCAL_M4_SOURCES' is obsolete.\n"
3448 . "It should be safe to simply remove it.");
3449 }
3451 # Note that it might be possible that aclocal.m4 doesn't exist but
3452 # should be auto-generated. This case probably isn't very
3453 # important.
3455 return ($regen_aclocal, @ac_deps);
3456 }
3459 # @DEPENDENCIES
3460 # &prepend_srcdir (@INPUTS)
3461 # -------------------------
3462 # Prepend $(srcdir) or $(top_srcdir) to all @INPUTS. The idea is that
3463 # if an input file has a directory part the same as the current
3464 # directory, then the directory part is simply replaced by $(srcdir).
3465 # But if the directory part is different, then $(top_srcdir) is
3466 # prepended.
3467 sub prepend_srcdir (@)
3468 {
3469 my (@inputs) = @_;
3470 my @newinputs;
3472 foreach my $single (@inputs)
3473 {
3474 if (dirname ($single) eq $relative_dir)
3475 {
3476 push (@newinputs, '$(srcdir)/' . basename ($single));
3477 }
3478 else
3479 {
3480 push (@newinputs, '$(top_srcdir)/' . $single);
3481 }
3482 }
3483 return @newinputs;
3484 }
3486 # @DEPENDENCIES
3487 # rewrite_inputs_into_dependencies ($OUTPUT, @INPUTS)
3488 # ---------------------------------------------------
3489 # Compute a list of dependencies appropriate for the rebuild
3490 # rule of
3491 # AC_CONFIG_FILES($OUTPUT:$INPUT[0]:$INPUTS[1]:...)
3492 # Also distribute $INPUTs which are not build by another AC_CONFIG_FILES.
3493 sub rewrite_inputs_into_dependencies ($@)
3494 {
3495 my ($file, @inputs) = @_;
3496 my @res = ();
3498 for my $i (@inputs)
3499 {
3500 if (exists $ac_config_files_location{$i})
3501 {
3502 my $di = dirname $i;
3503 if ($di eq $relative_dir)
3504 {
3505 $i = basename $i;
3506 }
3507 # In the top-level Makefile we do not use $(top_builddir), because
3508 # we are already there, and since the targets are built without
3509 # a $(top_builddir), it helps BSD Make to match them with
3510 # dependencies.
3511 elsif ($relative_dir ne '.')
3512 {
3513 $i = '$(top_builddir)/' . $i;
3514 }
3515 }
3516 else
3517 {
3518 msg ('error', $ac_config_files_location{$file},
3519 "required file `$i' not found")
3520 unless exists $output_files{$i} || -f $i;
3521 ($i) = prepend_srcdir ($i);
3522 push_dist_common ($i);
3523 }
3524 push @res, $i;
3525 }
3526 return @res;
3527 }
3531 # &handle_configure ($MAKEFILE_AM, $MAKEFILE_IN, $MAKEFILE, @INPUTS)
3532 # ------------------------------------------------------------------
3533 # Handle remaking and configure stuff.
3534 # We need the name of the input file, to do proper remaking rules.
3535 sub handle_configure ($$$@)
3536 {
3537 my ($makefile_am, $makefile_in, $makefile, @inputs) = @_;
3539 prog_error 'empty @inputs'
3540 unless @inputs;
3542 my ($rel_makefile_am, $rel_makefile_in) = prepend_srcdir ($makefile_am,
3543 $makefile_in);
3544 my $rel_makefile = basename $makefile;
3546 my $colon_infile = ':' . join (':', @inputs);
3547 $colon_infile = '' if $colon_infile eq ":$makefile.in";
3548 my @rewritten = rewrite_inputs_into_dependencies ($makefile, @inputs);
3549 my ($regen_aclocal_m4, @aclocal_m4_deps) = scan_aclocal_m4;
3550 define_pretty_variable ('am__aclocal_m4_deps', TRUE, INTERNAL,
3551 @configure_deps, @aclocal_m4_deps,
3552 '$(top_srcdir)/' . $configure_ac);
3553 my @configuredeps = ('$(am__aclocal_m4_deps)', '$(CONFIGURE_DEPENDENCIES)');
3554 push @configuredeps, '$(ACLOCAL_M4)' if -f 'aclocal.m4';
3555 define_pretty_variable ('am__configure_deps', TRUE, INTERNAL,
3556 @configuredeps);
3558 $output_rules .= file_contents
3559 ('configure',
3560 new Automake::Location,
3561 MAKEFILE => $rel_makefile,
3562 'MAKEFILE-DEPS' => "@rewritten",
3563 'CONFIG-MAKEFILE' => ($relative_dir eq '.') ? '$@' : '$(subdir)/$@',
3564 'MAKEFILE-IN' => $rel_makefile_in,
3565 'MAKEFILE-IN-DEPS' => "@include_stack",
3566 'MAKEFILE-AM' => $rel_makefile_am,
3567 STRICTNESS => global_option 'cygnus'
3568 ? 'cygnus' : $strictness_name,
3569 'USE-DEPS' => global_option 'no-dependencies'
3570 ? ' --ignore-deps' : '',
3571 'MAKEFILE-AM-SOURCES' => "$makefile$colon_infile",
3572 'REGEN-ACLOCAL-M4' => $regen_aclocal_m4);
3574 if ($relative_dir eq '.')
3575 {
3576 &push_dist_common ('acconfig.h')
3577 if -f 'acconfig.h';
3578 }
3580 # If we have a configure header, require it.
3581 my $hdr_index = 0;
3582 my @distclean_config;
3583 foreach my $spec (@config_headers)
3584 {
3585 $hdr_index += 1;
3586 # $CONFIG_H_PATH: config.h from top level.
3587 my ($config_h_path, @ins) = split_config_file_spec ($spec);
3588 my $config_h_dir = dirname ($config_h_path);
3590 # If the header is in the current directory we want to build
3591 # the header here. Otherwise, if we're at the topmost
3592 # directory and the header's directory doesn't have a
3593 # Makefile, then we also want to build the header.
3594 if ($relative_dir eq $config_h_dir
3595 || ($relative_dir eq '.' && ! &is_make_dir ($config_h_dir)))
3596 {
3597 my ($cn_sans_dir, $stamp_dir);
3598 if ($relative_dir eq $config_h_dir)
3599 {
3600 $cn_sans_dir = basename ($config_h_path);
3601 $stamp_dir = '';
3602 }
3603 else
3604 {
3605 $cn_sans_dir = $config_h_path;
3606 if ($config_h_dir eq '.')
3607 {
3608 $stamp_dir = '';
3609 }
3610 else
3611 {
3612 $stamp_dir = $config_h_dir . '/';
3613 }
3614 }
3616 # This will also distribute all inputs.
3617 @ins = rewrite_inputs_into_dependencies ($config_h_path, @ins);
3619 # Header defined and in this directory.
3620 my @files;
3621 if (-f $config_h_path . '.top')
3622 {
3623 push (@files, "$cn_sans_dir.top");
3624 }
3625 if (-f $config_h_path . '.bot')
3626 {
3627 push (@files, "$cn_sans_dir.bot");
3628 }
3630 push_dist_common (@files);
3632 # For now, acconfig.h can only appear in the top srcdir.
3633 if (-f 'acconfig.h')
3634 {
3635 push (@files, '$(top_srcdir)/acconfig.h');
3636 }
3638 my $stamp = "${stamp_dir}stamp-h${hdr_index}";
3639 $output_rules .=
3640 file_contents ('remake-hdr',
3641 new Automake::Location,
3642 FILES => "@files",
3643 CONFIG_H => $cn_sans_dir,
3644 CONFIG_HIN => $ins[0],
3645 CONFIG_H_DEPS => "@ins",
3646 CONFIG_H_PATH => $config_h_path,
3647 FIRST_CONFIG_HIN => ($hdr_index == 1),
3648 STAMP => "$stamp");
3650 push @distclean_config, $cn_sans_dir, $stamp;
3651 }
3652 }
3654 $output_rules .= file_contents ('clean-hdr',
3655 new Automake::Location,
3656 FILES => "@distclean_config")
3657 if @distclean_config;
3659 # Distribute and define mkinstalldirs only if it is already present
3660 # in the package, for backward compatibility (some people my still
3661 # use $(mkinstalldirs)).
3662 my $mkidpath = $config_aux_path[0] . '/mkinstalldirs';
3663 if (-f $mkidpath)
3664 {
3665 # Use require_file so that any existingscript gets updated
3666 # by --force-missing.
3667 require_conf_file ($mkidpath, FOREIGN, 'mkinstalldirs');
3668 define_variable ('mkinstalldirs',
3669 "\$(SHELL) $config_aux_dir/mkinstalldirs", INTERNAL);
3670 }
3671 else
3672 {
3673 define_variable ('mkinstalldirs', '$(mkdir_p)', INTERNAL);
3674 }
3676 reject_var ('CONFIG_HEADER',
3677 "`CONFIG_HEADER' is an anachronism; now determined "
3678 . "automatically\nfrom `$configure_ac'");
3680 my @config_h;
3681 foreach my $spec (@config_headers)
3682 {
3683 my ($out, @ins) = split_config_file_spec ($spec);
3684 # Generate CONFIG_HEADER define.
3685 if ($relative_dir eq dirname ($out))
3686 {
3687 push @config_h, basename ($out);
3688 }
3689 else
3690 {
3691 push @config_h, "\$(top_builddir)/$out";
3692 }
3693 }
3694 define_variable ("CONFIG_HEADER", "@config_h", INTERNAL)
3695 if @config_h;
3697 # Now look for other files in this directory which must be remade
3698 # by config.status, and generate rules for them.
3699 my @actual_other_files = ();
3700 foreach my $lfile (@other_input_files)
3701 {
3702 my $file;
3703 my @inputs;
3704 if ($lfile =~ /^([^:]*):(.*)$/)
3705 {
3706 # This is the ":" syntax of AC_OUTPUT.
3707 $file = $1;
3708 @inputs = split (':', $2);
3709 }
3710 else
3711 {
3712 # Normal usage.
3713 $file = $lfile;
3714 @inputs = $file . '.in';
3715 }
3717 # Automake files should not be stored in here, but in %MAKE_LIST.
3718 prog_error ("$lfile in \@other_input_files\n"
3719 . "\@other_input_files = (@other_input_files)")
3720 if -f $file . '.am';
3722 my $local = basename ($file);
3724 # Make sure the dist directory for each input file is created.
3725 # We only have to do this at the topmost level though. This
3726 # is a bit ugly but it easier than spreading out the logic,
3727 # especially in cases like AC_OUTPUT(foo/out:bar/in), where
3728 # there is no Makefile in bar/.
3729 if ($relative_dir eq '.')
3730 {
3731 foreach (@inputs)
3732 {
3733 $dist_dirs{dirname ($_)} = 1;
3734 }
3735 }
3737 # We skip files that aren't in this directory. However, if
3738 # the file's directory does not have a Makefile, and we are
3739 # currently doing `.', then we create a rule to rebuild the
3740 # file in the subdir.
3741 my $fd = dirname ($file);
3742 if ($fd ne $relative_dir)
3743 {
3744 if ($relative_dir eq '.' && ! &is_make_dir ($fd))
3745 {
3746 $local = $file;
3747 }
3748 else
3749 {
3750 next;
3751 }
3752 }
3754 my @rewritten_inputs = rewrite_inputs_into_dependencies ($file, @inputs);
3756 $output_rules .= ($local . ': '
3757 . '$(top_builddir)/config.status '
3758 . "@rewritten_inputs\n"
3759 . "\t"
3760 . 'cd $(top_builddir) && '
3761 . '$(SHELL) ./config.status '
3762 . ($relative_dir eq '.' ? '' : '$(subdir)/')
3763 . '$@'
3764 . "\n");
3765 push (@actual_other_files, $local);
3766 }
3768 # For links we should clean destinations and distribute sources.
3769 foreach my $spec (@config_links)
3770 {
3771 my ($link, $file) = split /:/, $spec;
3772 my $where = $ac_config_files_location{$link};
3774 # Skip destinations that contain shell variables.
3775 if ($link !~ /\$/)
3776 {
3777 # We skip links that aren't in this directory. However, if
3778 # the link's directory does not have a Makefile, and we are
3779 # currently doing `.', then we add the link to CONFIG_CLEAN_FILES
3780 # in `.'s Makefile.in.
3781 my $local = basename ($link);
3782 my $fd = dirname ($link);
3783 if ($fd ne $relative_dir)
3784 {
3785 if ($relative_dir eq '.' && ! &is_make_dir ($fd))
3786 {
3787 $local = $link;
3788 }
3789 else
3790 {
3791 $local = undef;
3792 }
3793 }
3794 push @actual_other_files, $local if $local;
3795 }
3797 # Do not process sources that contain shell variables.
3798 if ($file !~ /\$/)
3799 {
3800 my $fd = dirname ($file);
3802 # Make sure the dist directory for each input file is created.
3803 # We only have to do this at the topmost level though.
3804 if ($relative_dir eq '.')
3805 {
3806 $dist_dirs{$fd} = 1;
3807 }
3809 # We distribute files that are in this directory.
3810 # At the top-level (`.') we also distribute files whose
3811 # directory does not have a Makefile.
3812 if (($fd eq $relative_dir)
3813 || ($relative_dir eq '.' && ! &is_make_dir ($fd)))
3814 {
3815 # The following will distribute $file as a side-effect when
3816 # it is appropriate (i.e., when $file is not already an output).
3817 # We do not need the result, just the side-effect.
3818 rewrite_inputs_into_dependencies ($link, $file);
3819 }
3820 }
3821 }
3823 # These files get removed by "make distclean".
3824 define_pretty_variable ('CONFIG_CLEAN_FILES', TRUE, INTERNAL,
3825 @actual_other_files);
3826 }
3828 # Handle C headers.
3829 sub handle_headers
3830 {
3831 my @r = &am_install_var ('-defaultdist', 'header', 'HEADERS', 'include',
3832 'oldinclude', 'pkginclude',
3833 'noinst', 'check');
3834 foreach (@r)
3835 {
3836 next unless $_->[1] =~ /\..*$/;
3837 &saw_extension ($&);
3838 }
3839 }
3841 sub handle_gettext
3842 {
3843 return if ! $seen_gettext || $relative_dir ne '.';
3845 my $subdirs = var 'SUBDIRS';
3847 if (! $subdirs)
3848 {
3849 err_ac "AM_GNU_GETTEXT used but SUBDIRS not defined";
3850 return;
3851 }
3853 # Perform some sanity checks to help users get the right setup.
3854 # We disable these tests when po/ doesn't exist in order not to disallow
3855 # unusual gettext setups.
3856 #
3857 # Bruno Haible:
3858 # | The idea is:
3859 # |
3860 # | 1) If a package doesn't have a directory po/ at top level, it
3861 # | will likely have multiple po/ directories in subpackages.
3862 # |
3863 # | 2) It is useful to warn for the absence of intl/ if AM_GNU_GETTEXT
3864 # | is used without 'external'. It is also useful to warn for the
3865 # | presence of intl/ if AM_GNU_GETTEXT([external]) is used. Both
3866 # | warnings apply only to the usual layout of packages, therefore
3867 # | they should both be disabled if no po/ directory is found at
3868 # | top level.
3870 if (-d 'po')
3871 {
3872 my @subdirs = $subdirs->value_as_list_recursive;
3874 msg_var ('syntax', $subdirs,
3875 "AM_GNU_GETTEXT used but `po' not in SUBDIRS")
3876 if ! grep ($_ eq 'po', @subdirs);
3878 # intl/ is not required when AM_GNU_GETTEXT is called with
3879 # the `external' option.
3880 msg_var ('syntax', $subdirs,
3881 "AM_GNU_GETTEXT used but `intl' not in SUBDIRS")
3882 if (! $seen_gettext_external
3883 && ! grep ($_ eq 'intl', @subdirs));
3885 # intl/ should not be used with AM_GNU_GETTEXT([external])
3886 msg_var ('syntax', $subdirs,
3887 "`intl' should not be in SUBDIRS when "
3888 . "AM_GNU_GETTEXT([external]) is used")
3889 if ($seen_gettext_external && grep ($_ eq 'intl', @subdirs));
3890 }
3892 require_file ($ac_gettext_location, GNU, 'ABOUT-NLS');
3893 }
3895 # Handle footer elements.
3896 sub handle_footer
3897 {
3898 # NOTE don't use define_pretty_variable here, because
3899 # $contents{...} is already defined.
3900 $output_vars .= 'SOURCES = ' . variable_value ('SOURCES') . "\n\n"
3901 if variable_value ('SOURCES');
3903 reject_rule ('.SUFFIXES',
3904 "use variable `SUFFIXES', not target `.SUFFIXES'");
3906 # Note: AIX 4.1 /bin/make will fail if any suffix rule appears
3907 # before .SUFFIXES. So we make sure that .SUFFIXES appears before
3908 # anything else, by sticking it right after the default: target.
3909 $output_header .= ".SUFFIXES:\n";
3910 my $suffixes = var 'SUFFIXES';
3911 my @suffixes = Automake::Rule::suffixes;
3912 if (@suffixes || $suffixes)
3913 {
3914 # Make sure SUFFIXES has unique elements. Sort them to ensure
3915 # the output remains consistent. However, $(SUFFIXES) is
3916 # always at the start of the list, unsorted. This is done
3917 # because make will choose rules depending on the ordering of
3918 # suffixes, and this lets the user have some control. Push
3919 # actual suffixes, and not $(SUFFIXES). Some versions of make
3920 # do not like variable substitutions on the .SUFFIXES line.
3921 my @user_suffixes = ($suffixes
3922 ? $suffixes->value_as_list_recursive : ());
3924 my %suffixes = map { $_ => 1 } @suffixes;
3925 delete @suffixes{@user_suffixes};
3927 $output_header .= (".SUFFIXES: "
3928 . join (' ', @user_suffixes, sort keys %suffixes)
3929 . "\n");
3930 }
3932 $output_trailer .= file_contents ('footer', new Automake::Location);
3933 }
3936 # Generate `make install' rules.
3937 sub handle_install ()
3938 {
3939 $output_rules .= &file_contents
3940 ('install',
3941 new Automake::Location,
3942 maybe_BUILT_SOURCES => (set_seen ('BUILT_SOURCES')
3943 ? (" \$(BUILT_SOURCES)\n"
3944 . "\t\$(MAKE) \$(AM_MAKEFLAGS)")
3945 : ''),
3946 'installdirs-local' => (rule 'installdirs-local'
3947 ? ' installdirs-local' : ''),
3948 am__installdirs => variable_value ('am__installdirs') || '');
3949 }
3952 # Deal with all and all-am.
3953 sub handle_all ($)
3954 {
3955 my ($makefile) = @_;
3957 # Output `all-am'.
3959 # Put this at the beginning for the sake of non-GNU makes. This
3960 # is still wrong if these makes can run parallel jobs. But it is
3961 # right enough.
3962 unshift (@all, basename ($makefile));
3964 foreach my $spec (@config_headers)
3965 {
3966 my ($out, @ins) = split_config_file_spec ($spec);
3967 push (@all, basename ($out))
3968 if dirname ($out) eq $relative_dir;
3969 }
3971 # Install `all' hooks.
3972 if (rule "all-local")
3973 {
3974 push (@all, "all-local");
3975 &depend ('.PHONY', "all-local");
3976 }
3978 &pretty_print_rule ("all-am:", "\t\t", @all);
3979 &depend ('.PHONY', 'all-am', 'all');
3982 # Output `all'.
3984 my @local_headers = ();
3985 push @local_headers, '$(BUILT_SOURCES)'
3986 if var ('BUILT_SOURCES');
3987 foreach my $spec (@config_headers)
3988 {
3989 my ($out, @ins) = split_config_file_spec ($spec);
3990 push @local_headers, basename ($out)
3991 if dirname ($out) eq $relative_dir;
3992 }
3994 if (@local_headers)
3995 {
3996 # We need to make sure config.h is built before we recurse.
3997 # We also want to make sure that built sources are built
3998 # before any ordinary `all' targets are run. We can't do this
3999 # by changing the order of dependencies to the "all" because
4000 # that breaks when using parallel makes. Instead we handle
4001 # things explicitly.
4002 $output_all .= ("all: @local_headers"
4003 . "\n\t"
4004 . '$(MAKE) $(AM_MAKEFLAGS) '
4005 . (var ('SUBDIRS') ? 'all-recursive' : 'all-am')
4006 . "\n\n");
4007 }
4008 else
4009 {
4010 $output_all .= "all: " . (var ('SUBDIRS')
4011 ? 'all-recursive' : 'all-am') . "\n\n";
4012 }
4013 }
4016 # &do_check_merge_target ()
4017 # -------------------------
4018 # Handle check merge target specially.
4019 sub do_check_merge_target ()
4020 {
4021 if (rule 'check-local')
4022 {
4023 # User defined local form of target. So include it.
4024 push @check_tests, 'check-local';
4025 depend '.PHONY', 'check-local';
4026 }
4028 # In --cygnus mode, check doesn't depend on all.
4029 if (option 'cygnus')
4030 {
4031 # Just run the local check rules.
4032 pretty_print_rule ('check-am:', "\t\t", @check);
4033 }
4034 else
4035 {
4036 # The check target must depend on the local equivalent of
4037 # `all', to ensure all the primary targets are built. Then it
4038 # must build the local check rules.
4039 $output_rules .= "check-am: all-am\n";
4040 pretty_print_rule ("\t\$(MAKE) \$(AM_MAKEFLAGS)", "\t ",
4041 @check)
4042 if @check;
4043 }
4044 pretty_print_rule ("\t\$(MAKE) \$(AM_MAKEFLAGS)", "\t ",
4045 @check_tests)
4046 if @check_tests;
4048 depend '.PHONY', 'check', 'check-am';
4049 # Handle recursion. We have to honor BUILT_SOURCES like for `all:'.
4050 $output_rules .= ("check: "
4051 . (var ('BUILT_SOURCES')
4052 ? "\$(BUILT_SOURCES)\n\t\$(MAKE) \$(AM_MAKEFLAGS) "
4053 : '')
4054 . (var ('SUBDIRS') ? 'check-recursive' : 'check-am')
4055 . "\n");
4056 }
4058 # handle_clean ($MAKEFILE)
4059 # ------------------------
4060 # Handle all 'clean' targets.
4061 sub handle_clean ($)
4062 {
4063 my ($makefile) = @_;
4065 # Clean the files listed in user variables if they exist.
4066 $clean_files{'$(MOSTLYCLEANFILES)'} = MOSTLY_CLEAN
4067 if var ('MOSTLYCLEANFILES');
4068 $clean_files{'$(CLEANFILES)'} = CLEAN
4069 if var ('CLEANFILES');
4070 $clean_files{'$(DISTCLEANFILES)'} = DIST_CLEAN
4071 if var ('DISTCLEANFILES');
4072 $clean_files{'$(MAINTAINERCLEANFILES)'} = MAINTAINER_CLEAN
4073 if var ('MAINTAINERCLEANFILES');
4075 # Built sources are automatically removed by maintainer-clean.
4076 $clean_files{'$(BUILT_SOURCES)'} = MAINTAINER_CLEAN
4077 if var ('BUILT_SOURCES');
4079 # Compute a list of "rm"s to run for each target.
4080 my %rms = (MOSTLY_CLEAN, [],
4081 CLEAN, [],
4082 DIST_CLEAN, [],
4083 MAINTAINER_CLEAN, []);
4085 foreach my $file (keys %clean_files)
4086 {
4087 my $when = $clean_files{$file};
4088 prog_error 'invalid entry in %clean_files'
4089 unless exists $rms{$when};
4091 my $rm = "rm -f $file";
4092 # If file is a variable, make sure when don't call `rm -f' without args.
4093 $rm ="test -z \"$file\" || $rm"
4094 if ($file =~ /^\s*\$(\(.*\)|\{.*\})\s*$/);
4096 push @{$rms{$when}}, "\t-$rm\n";
4097 }
4099 $output_rules .= &file_contents
4100 ('clean',
4101 new Automake::Location,
4102 MOSTLYCLEAN_RMS => join ('', @{$rms{&MOSTLY_CLEAN}}),
4103 CLEAN_RMS => join ('', @{$rms{&CLEAN}}),
4104 DISTCLEAN_RMS => join ('', @{$rms{&DIST_CLEAN}}),
4105 MAINTAINER_CLEAN_RMS => join ('', @{$rms{&MAINTAINER_CLEAN}}),
4106 MAKEFILE => basename $makefile,
4107 );
4108 }
4111 # &target_cmp ($A, $B)
4112 # --------------------
4113 # Subroutine for &handle_factored_dependencies to let `.PHONY' be last.
4114 sub target_cmp
4115 {
4116 return 0
4117 if $a eq $b;
4118 return -1
4119 if $b eq '.PHONY';
4120 return 1
4121 if $a eq '.PHONY';
4122 return $a cmp $b;
4123 }
4126 # &handle_factored_dependencies ()
4127 # --------------------------------
4128 # Handle everything related to gathered targets.
4129 sub handle_factored_dependencies
4130 {
4131 # Reject bad hooks.
4132 foreach my $utarg ('uninstall-data-local', 'uninstall-data-hook',
4133 'uninstall-exec-local', 'uninstall-exec-hook')
4134 {
4135 my $x = $utarg;
4136 $x =~ s/(data|exec)-//;
4137 reject_rule ($utarg, "use `$x', not `$utarg'");
4138 }
4140 reject_rule ('install-local',
4141 "use `install-data-local' or `install-exec-local', "
4142 . "not `install-local'");
4144 reject_rule ('install-info-local',
4145 "`install-info-local' target defined but "
4146 . "`no-installinfo' option not in use")
4147 unless option 'no-installinfo';
4149 # Install the -local hooks.
4150 foreach (keys %dependencies)
4151 {
4152 # Hooks are installed on the -am targets.
4153 s/-am$// or next;
4154 if (rule "$_-local")
4155 {
4156 depend ("$_-am", "$_-local");
4157 depend ('.PHONY', "$_-local");
4158 }
4159 }
4161 # Install the -hook hooks.
4162 # FIXME: Why not be as liberal as we are with -local hooks?
4163 foreach ('install-exec', 'install-data', 'uninstall')
4164 {
4165 if (rule ("$_-hook"))
4166 {
4167 $actions{"$_-am"} .=
4168 ("\t\@\$(NORMAL_INSTALL)\n"
4169 . "\t" . '$(MAKE) $(AM_MAKEFLAGS) ' . "$_-hook\n");
4170 }
4171 }
4173 # All the required targets are phony.
4174 depend ('.PHONY', keys %required_targets);
4176 # Actually output gathered targets.
4177 foreach (sort target_cmp keys %dependencies)
4178 {
4179 # If there is nothing about this guy, skip it.
4180 next
4181 unless (@{$dependencies{$_}}
4182 || $actions{$_}
4183 || $required_targets{$_});
4185 # Define gathered targets in undefined conditions.
4186 # FIXME: Right now we must handle .PHONY as an exception,
4187 # because people write things like
4188 # .PHONY: myphonytarget
4189 # to append dependencies. This would not work if Automake
4190 # refrained from defining its own .PHONY target as it does
4191 # with other overridden targets.
4192 my @undefined_conds = (TRUE,);
4193 if ($_ ne '.PHONY')
4194 {
4195 @undefined_conds =
4196 Automake::Rule::define ($_, 'internal',
4197 RULE_AUTOMAKE, TRUE, INTERNAL);
4198 }
4199 my @uniq_deps = uniq (sort @{$dependencies{$_}});
4200 foreach my $cond (@undefined_conds)
4201 {
4202 my $condstr = $cond->subst_string;
4203 &pretty_print_rule ("$condstr$_:", "$condstr\t", @uniq_deps);
4204 $output_rules .= $actions{$_} if defined $actions{$_};
4205 $output_rules .= "\n";
4206 }
4207 }
4208 }
4211 # &handle_tests_dejagnu ()
4212 # ------------------------
4213 sub handle_tests_dejagnu
4214 {
4215 push (@check_tests, 'check-DEJAGNU');
4216 $output_rules .= file_contents ('dejagnu', new Automake::Location);
4217 }
4220 # Handle TESTS variable and other checks.
4221 sub handle_tests
4222 {
4223 if (option 'dejagnu')
4224 {
4225 &handle_tests_dejagnu;
4226 }
4227 else
4228 {
4229 foreach my $c ('DEJATOOL', 'RUNTEST', 'RUNTESTFLAGS')
4230 {
4231 reject_var ($c, "`$c' defined but `dejagnu' not in "
4232 . "`AUTOMAKE_OPTIONS'");
4233 }
4234 }
4236 if (var ('TESTS'))
4237 {
4238 push (@check_tests, 'check-TESTS');
4239 $output_rules .= &file_contents ('check', new Automake::Location);
4240 }
4241 }
4243 # Handle Emacs Lisp.
4244 sub handle_emacs_lisp
4245 {
4246 my @elfiles = &am_install_var ('-candist', 'lisp', 'LISP',
4247 'lisp', 'noinst');
4249 return if ! @elfiles;
4251 # Generate .elc files.
4252 my @elcfiles = map { $_->[1] . 'c' } @elfiles;
4254 define_pretty_variable ('ELCFILES', TRUE, INTERNAL, @elcfiles);
4255 define_pretty_variable ('am__ELFILES', TRUE, INTERNAL,
4256 map { $_->[1] } @elfiles);
4258 # Do not depend on the build rules if ELCFILES is empty.
4259 # This is necessary because overriding ELCFILES= is a documented
4260 # idiom to disable byte-compilation.
4261 if (variable_value ('ELCFILES'))
4262 {
4263 # It's important that all depends on elc-stamp so that
4264 # all .elc files get recompiled whenever a .el changes.
4265 # It's important that all depends on $(ELCFILES) so that
4266 # we can recover if any of them is deleted.
4267 push (@all, 'elc-stamp', '$(ELCFILES)');
4268 }
4270 require_variables ($elfiles[0][0], "Emacs Lisp sources seen", TRUE,
4271 'EMACS', 'lispdir');
4272 require_conf_file ($elfiles[0][0], FOREIGN, 'elisp-comp');
4273 &define_variable ('elisp_comp', $config_aux_dir . '/elisp-comp', INTERNAL);
4274 }
4276 # Handle Python
4277 sub handle_python
4278 {
4279 my @pyfiles = &am_install_var ('-defaultdist', 'python', 'PYTHON',
4280 'noinst');
4281 return if ! @pyfiles;
4283 require_variables ($pyfiles[0][0], "Python sources seen", TRUE, 'PYTHON');
4284 require_conf_file ($pyfiles[0][0], FOREIGN, 'py-compile');
4285 &define_variable ('py_compile', $config_aux_dir . '/py-compile', INTERNAL);
4286 }
4288 # Handle Java.
4289 sub handle_java
4290 {
4291 my @sourcelist = &am_install_var ('-candist',
4292 'java', 'JAVA',
4293 'java', 'noinst', 'check');
4294 return if ! @sourcelist;
4296 my @prefix = am_primary_prefixes ('JAVA', 1,
4297 'java', 'noinst', 'check');
4299 my $dir;
4300 foreach my $curs (@prefix)
4301 {
4302 next
4303 if $curs eq 'EXTRA';
4305 err_var "${curs}_JAVA", "multiple _JAVA primaries in use"
4306 if defined $dir;
4307 $dir = $curs;
4308 }
4311 push (@all, 'class' . $dir . '.stamp');
4312 }
4315 # Handle some of the minor options.
4316 sub handle_minor_options
4317 {
4318 if (option 'readme-alpha')
4319 {
4320 if ($relative_dir eq '.')
4321 {
4322 if ($package_version !~ /^$GNITS_VERSION_PATTERN$/)
4323 {
4324 msg ('error-gnits', $package_version_location,
4325 "version `$package_version' doesn't follow " .
4326 "Gnits standards");
4327 }
4328 if (defined $1 && -f 'README-alpha')
4329 {
4330 # This means we have an alpha release. See
4331 # GNITS_VERSION_PATTERN for details.
4332 push_dist_common ('README-alpha');
4333 }
4334 }
4335 }
4336 }
4338 ################################################################
4340 # ($OUTPUT, @INPUTS)
4341 # &split_config_file_spec ($SPEC)
4342 # -------------------------------
4343 # Decode the Autoconf syntax for config files (files, headers, links
4344 # etc.).
4345 sub split_config_file_spec ($)
4346 {
4347 my ($spec) = @_;
4348 my ($output, @inputs) = split (/:/, $spec);
4350 push @inputs, "$output.in"
4351 unless @inputs;
4353 return ($output, @inputs);
4354 }
4356 # $input
4357 # locate_am (@POSSIBLE_SOURCES)
4358 # -----------------------------
4359 # AC_CONFIG_FILES allow specifications such as Makefile:top.in:mid.in:bot.in
4360 # This functions returns the first *.in file for which a *.am exists.
4361 # It returns undef otherwise.
4362 sub locate_am (@)
4363 {
4364 my (@rest) = @_;
4365 my $input;
4366 foreach my $file (@rest)
4367 {
4368 if (($file =~ /^(.*)\.in$/) && -f "$1.am")
4369 {
4370 $input = $file;
4371 last;
4372 }
4373 }
4374 return $input;
4375 }
4377 my %make_list;
4379 # &scan_autoconf_config_files ($WHERE, $CONFIG-FILES)
4380 # ---------------------------------------------------
4381 # Study $CONFIG-FILES which is the first argument to AC_CONFIG_FILES
4382 # (or AC_OUTPUT).
4383 sub scan_autoconf_config_files ($$)
4384 {
4385 my ($where, $config_files) = @_;
4387 # Look at potential Makefile.am's.
4388 foreach (split ' ', $config_files)
4389 {
4390 # Must skip empty string for Perl 4.
4391 next if $_ eq "\\" || $_ eq '';
4393 # Handle $local:$input syntax.
4394 my ($local, @rest) = split (/:/);
4395 @rest = ("$local.in",) unless @rest;
4396 my $input = locate_am @rest;
4397 if ($input)
4398 {
4399 # We have a file that automake should generate.
4400 $make_list{$input} = join (':', ($local, @rest));
4401 }
4402 else
4403 {
4404 # We have a file that automake should cause to be
4405 # rebuilt, but shouldn't generate itself.
4406 push (@other_input_files, $_);
4407 }
4408 $ac_config_files_location{$local} = $where;
4409 }
4410 }
4413 # &scan_autoconf_traces ($FILENAME)
4414 # ---------------------------------
4415 sub scan_autoconf_traces ($)
4416 {
4417 my ($filename) = @_;
4419 # Macros to trace, with their minimal number of arguments.
4420 my %traced = (
4421 AC_CANONICAL_HOST => 0,
4422 AC_CANONICAL_SYSTEM => 0,
4423 AC_CONFIG_AUX_DIR => 1,
4424 AC_CONFIG_FILES => 1,
4425 AC_CONFIG_HEADERS => 1,
4426 AC_CONFIG_LINKS => 1,
4427 AC_INIT => 0,
4428 AC_LIBSOURCE => 1,
4429 AC_SUBST => 1,
4430 AM_AUTOMAKE_VERSION => 1,
4431 AM_CONDITIONAL => 2,
4432 AM_ENABLE_MULTILIB => 0,
4433 AM_GNU_GETTEXT => 0,
4434 AM_INIT_AUTOMAKE => 0,
4435 AM_MAINTAINER_MODE => 0,
4436 AM_PROG_CC_C_O => 0,
4437 m4_include => 1,
4438 m4_sinclude => 1,
4439 sinclude => 1,
4440 );
4442 my $traces = ($ENV{AUTOCONF} || 'autoconf') . " ";
4444 # Use a separator unlikely to be used, not `:', the default, which
4445 # has a precise meaning for AC_CONFIG_FILES and so on.
4446 $traces .= join (' ',
4447 map { "--trace=$_" . ':\$f:\$l::\$n::\${::}%' }
4448 (keys %traced));
4450 my $tracefh = new Automake::XFile ("$traces $filename |");
4451 verb "reading $traces";
4453 while ($_ = $tracefh->getline)
4454 {
4455 chomp;
4456 my ($here, @args) = split /::/;
4457 my $where = new Automake::Location $here;
4458 my $macro = $args[0];
4460 prog_error ("unrequested trace `$macro'")
4461 unless exists $traced{$macro};
4463 # Skip and diagnose malformed calls.
4464 if ($#args < $traced{$macro})
4465 {
4466 msg ('syntax', $where, "not enough arguments for $macro");
4467 next;
4468 }
4470 # Alphabetical ordering please.
4471 if ($macro eq 'AC_CANONICAL_HOST')
4472 {
4473 if (! $seen_canonical)
4474 {
4475 $seen_canonical = AC_CANONICAL_HOST;
4476 $canonical_location = $where;
4477 }
4478 }
4479 elsif ($macro eq 'AC_CANONICAL_SYSTEM')
4480 {
4481 $seen_canonical = AC_CANONICAL_SYSTEM;
4482 $canonical_location = $where;
4483 }
4484 elsif ($macro eq 'AC_CONFIG_AUX_DIR')
4485 {
4486 @config_aux_path = $args[1];
4487 $config_aux_dir_set_in_configure_in = 1;
4488 }
4489 elsif ($macro eq 'AC_CONFIG_FILES')
4490 {
4491 # Look at potential Makefile.am's.
4492 scan_autoconf_config_files ($where, $args[1]);
4493 }
4494 elsif ($macro eq 'AC_CONFIG_HEADERS')
4495 {
4496 foreach my $spec (split (' ', $args[1]))
4497 {
4498 my ($dest, @src) = split (':', $spec);
4499 $ac_config_files_location{$dest} = $where;
4500 push @config_headers, $spec;
4501 }
4502 }
4503 elsif ($macro eq 'AC_CONFIG_LINKS')
4504 {
4505 foreach my $spec (split (' ', $args[1]))
4506 {
4507 my ($dest, $src) = split (':', $spec);
4508 $ac_config_files_location{$dest} = $where;
4509 push @config_links, $spec;
4510 }
4511 }
4512 elsif ($macro eq 'AC_INIT')
4513 {
4514 if (defined $args[2])
4515 {
4516 $package_version = $args[2];
4517 $package_version_location = $where;
4518 }
4519 }
4520 elsif ($macro eq 'AC_LIBSOURCE')
4521 {
4522 $libsources{$args[1]} = $here;
4523 }
4524 elsif ($macro eq 'AC_SUBST')
4525 {
4526 # Just check for alphanumeric in AC_SUBST. If you do
4527 # AC_SUBST(5), then too bad.
4528 $configure_vars{$args[1]} = $where
4529 if $args[1] =~ /^\w+$/;
4530 }
4531 elsif ($macro eq 'AM_AUTOMAKE_VERSION')
4532 {
4533 error ($where,
4534 "version mismatch. This is Automake $VERSION,\n" .
4535 "but the definition used by this AM_INIT_AUTOMAKE\n" .
4536 "comes from Automake $args[1]. You should recreate\n" .
4537 "aclocal.m4 with aclocal and run automake again.\n",
4538 # $? = 63 is used to indicate version mismatch to missing.
4539 exit_code => 63)
4540 if $VERSION ne $args[1];
4542 $seen_automake_version = 1;
4543 }
4544 elsif ($macro eq 'AM_CONDITIONAL')
4545 {
4546 $configure_cond{$args[1]} = $where;
4547 }
4548 elsif ($macro eq 'AM_ENABLE_MULTILIB')
4549 {
4550 $seen_multilib = $where;
4551 }
4552 elsif ($macro eq 'AM_GNU_GETTEXT')
4553 {
4554 $seen_gettext = $where;
4555 $ac_gettext_location = $where;
4556 $seen_gettext_external = grep ($_ eq 'external', @args);
4557 }
4558 elsif ($macro eq 'AM_INIT_AUTOMAKE')
4559 {
4560 $seen_init_automake = $where;
4561 if (defined $args[2])
4562 {
4563 $package_version = $args[2];
4564 $package_version_location = $where;
4565 }
4566 elsif (defined $args[1])
4567 {
4568 exit $exit_code
4569 if (process_global_option_list ($where,
4570 split (' ', $args[1])));
4571 }
4572 }
4573 elsif ($macro eq 'AM_MAINTAINER_MODE')
4574 {
4575 $seen_maint_mode = $where;
4576 }
4577 elsif ($macro eq 'AM_PROG_CC_C_O')
4578 {
4579 $seen_cc_c_o = $where;
4580 }
4581 elsif ($macro eq 'm4_include'
4582 || $macro eq 'm4_sinclude'
4583 || $macro eq 'sinclude')
4584 {
4585 # Some modified versions of Autoconf don't use
4586 # forzen files. Consequently it's possible that we see all
4587 # m4_include's performed during Autoconf's startup.
4588 # Obviously we don't want to distribute Autoconf's files
4589 # so we skip absolute filenames here.
4590 push @configure_deps, '$(top_srcdir)/' . $args[1]
4591 unless $here =~ m,^(?:\w:)?[\\/],;
4592 # Keep track of the greatest timestamp.
4593 if (-e $args[1])
4594 {
4595 my $mtime = mtime $args[1];
4596 $configure_deps_greatest_timestamp = $mtime
4597 if $mtime > $configure_deps_greatest_timestamp;
4598 }
4599 }
4600 }
4602 $tracefh->close;
4603 }
4606 # &scan_autoconf_files ()
4607 # -----------------------
4608 # Check whether we use `configure.ac' or `configure.in'.
4609 # Scan it (and possibly `aclocal.m4') for interesting things.
4610 # We must scan aclocal.m4 because there might be AC_SUBSTs and such there.
4611 sub scan_autoconf_files ()
4612 {
4613 # Reinitialize libsources here. This isn't really necessary,
4614 # since we currently assume there is only one configure.ac. But
4615 # that won't always be the case.
4616 %libsources = ();
4618 # Keep track of the youngest configure dependency.
4619 $configure_deps_greatest_timestamp = mtime $configure_ac;
4620 if (-e 'aclocal.m4')
4621 {
4622 my $mtime = mtime 'aclocal.m4';
4623 $configure_deps_greatest_timestamp = $mtime
4624 if $mtime > $configure_deps_greatest_timestamp;
4625 }
4627 scan_autoconf_traces ($configure_ac);
4629 @configure_input_files = sort keys %make_list;
4630 # Set input and output files if not specified by user.
4631 if (! @input_files)
4632 {
4633 @input_files = @configure_input_files;
4634 %output_files = %make_list;
4635 }
4638 if (! $seen_init_automake)
4639 {
4640 err_ac ("no proper invocation of AM_INIT_AUTOMAKE was found.\nYou "
4641 . "should verify that $configure_ac invokes AM_INIT_AUTOMAKE,"
4642 . "\nthat aclocal.m4 is present in the top-level directory,\n"
4643 . "and that aclocal.m4 was recently regenerated "
4644 . "(using aclocal).");
4645 }
4646 else
4647 {
4648 if (! $seen_automake_version)
4649 {
4650 if (-f 'aclocal.m4')
4651 {
4652 error ($seen_init_automake,
4653 "your implementation of AM_INIT_AUTOMAKE comes from " .
4654 "an\nold Automake version. You should recreate " .
4655 "aclocal.m4\nwith aclocal and run automake again.\n",
4656 # $? = 63 is used to indicate version mismatch to missing.
4657 exit_code => 63);
4658 }
4659 else
4660 {
4661 error ($seen_init_automake,
4662 "no proper implementation of AM_INIT_AUTOMAKE was " .
4663 "found,\nprobably because aclocal.m4 is missing...\n" .
4664 "You should run aclocal to create this file, then\n" .
4665 "run automake again.\n");
4666 }
4667 }
4668 }
4670 # Look for some files we need. Always check for these. This
4671 # check must be done for every run, even those where we are only
4672 # looking at a subdir Makefile. We must set relative_dir so that
4673 # the file-finding machinery works.
4674 # FIXME: Is this broken because it needs dynamic scopes.
4675 # My tests seems to show it's not the case.
4676 $relative_dir = '.';
4677 require_conf_file ($configure_ac, FOREIGN, 'install-sh', 'missing');
4678 err_am "`install.sh' is an anachronism; use `install-sh' instead"
4679 if -f $config_aux_path[0] . '/install.sh';
4681 # Preserve dist_common for later.
4682 $configure_dist_common = variable_value ('DIST_COMMON') || '';
4683 }
4685 ################################################################
4687 # Set up for Cygnus mode.
4688 sub check_cygnus
4689 {
4690 my $cygnus = option 'cygnus';
4691 return unless $cygnus;
4693 set_strictness ('foreign');
4694 set_option ('no-installinfo', $cygnus);
4695 set_option ('no-dependencies', $cygnus);
4696 set_option ('no-dist', $cygnus);
4698 err_ac "`AM_MAINTAINER_MODE' required when --cygnus specified"
4699 if !$seen_maint_mode;
4700 }
4702 # Do any extra checking for GNU standards.
4703 sub check_gnu_standards
4704 {
4705 if ($relative_dir eq '.')
4706 {
4707 # In top level (or only) directory.
4708 require_file ("$am_file.am", GNU,
4709 qw/INSTALL NEWS README AUTHORS ChangeLog/);
4711 # Accept one of these three licenses; default to COPYING.
4712 # Make sure we do not overwrite an existing license.
4713 my $license;
4714 foreach (qw /COPYING COPYING.LIB COPYING.LESSER/)
4715 {
4716 if (-f $_)
4717 {
4718 $license = $_;
4719 last;
4720 }
4721 }
4722 require_file ("$am_file.am", GNU, 'COPYING')
4723 unless $license;
4724 }
4726 for my $opt ('no-installman', 'no-installinfo')
4727 {
4728 msg ('error-gnu', option $opt,
4729 "option `$opt' disallowed by GNU standards")
4730 if option $opt;
4731 }
4732 }
4734 # Do any extra checking for GNITS standards.
4735 sub check_gnits_standards
4736 {
4737 if ($relative_dir eq '.')
4738 {
4739 # In top level (or only) directory.
4740 require_file ("$am_file.am", GNITS, 'THANKS');
4741 }
4742 }
4744 ################################################################
4745 #
4746 # Functions to handle files of each language.
4748 # Each `lang_X_rewrite($DIRECTORY, $BASE, $EXT)' function follows a
4749 # simple formula: Return value is LANG_SUBDIR if the resulting object
4750 # file should be in a subdir if the source file is, LANG_PROCESS if
4751 # file is to be dealt with, LANG_IGNORE otherwise.
4753 # Much of the actual processing is handled in
4754 # handle_single_transform_list. These functions exist so that
4755 # auxiliary information can be recorded for a later cleanup pass.
4756 # Note that the calls to these functions are computed, so don't bother
4757 # searching for their precise names in the source.
4759 # This is just a convenience function that can be used to determine
4760 # when a subdir object should be used.
4761 sub lang_sub_obj
4762 {
4763 return option 'subdir-objects' ? LANG_SUBDIR : LANG_PROCESS;
4764 }
4766 # Rewrite a single C source file.
4767 sub lang_c_rewrite
4768 {
4769 my ($directory, $base, $ext) = @_;
4771 if (option 'ansi2knr' && $base =~ /_$/)
4772 {
4773 # FIXME: include line number in error.
4774 err_am "C source file `$base.c' would be deleted by ansi2knr rules";
4775 }
4777 my $r = LANG_PROCESS;
4778 if (option 'subdir-objects')
4779 {
4780 $r = LANG_SUBDIR;
4781 $base = $directory . '/' . $base
4782 unless $directory eq '.' || $directory eq '';
4784 err_am ("C objects in subdir but `AM_PROG_CC_C_O' "
4785 . "not in `$configure_ac'",
4786 uniq_scope => US_GLOBAL)
4787 unless $seen_cc_c_o;
4789 require_conf_file ("$am_file.am", FOREIGN, 'compile');
4791 # In this case we already have the directory information, so
4792 # don't add it again.
4793 $de_ansi_files{$base} = '';
4794 }
4795 else
4796 {
4797 $de_ansi_files{$base} = (($directory eq '.' || $directory eq '')
4798 ? ''
4799 : "$directory/");
4800 }
4802 return $r;
4803 }
4805 # Rewrite a single C++ source file.
4806 sub lang_cxx_rewrite
4807 {
4808 return &lang_sub_obj;
4809 }
4811 # Rewrite a single header file.
4812 sub lang_header_rewrite
4813 {
4814 # Header files are simply ignored.
4815 return LANG_IGNORE;
4816 }
4818 # Rewrite a single yacc file.
4819 sub lang_yacc_rewrite
4820 {
4821 my ($directory, $base, $ext) = @_;
4823 my $r = &lang_sub_obj;
4824 (my $newext = $ext) =~ tr/y/c/;
4825 return ($r, $newext);
4826 }
4828 # Rewrite a single yacc++ file.
4829 sub lang_yaccxx_rewrite
4830 {
4831 my ($directory, $base, $ext) = @_;
4833 my $r = &lang_sub_obj;
4834 (my $newext = $ext) =~ tr/y/c/;
4835 return ($r, $newext);
4836 }
4838 # Rewrite a single lex file.
4839 sub lang_lex_rewrite
4840 {
4841 my ($directory, $base, $ext) = @_;
4843 my $r = &lang_sub_obj;
4844 (my $newext = $ext) =~ tr/l/c/;
4845 return ($r, $newext);
4846 }
4848 # Rewrite a single lex++ file.
4849 sub lang_lexxx_rewrite
4850 {
4851 my ($directory, $base, $ext) = @_;
4853 my $r = &lang_sub_obj;
4854 (my $newext = $ext) =~ tr/l/c/;
4855 return ($r, $newext);
4856 }
4858 # Rewrite a single assembly file.
4859 sub lang_asm_rewrite
4860 {
4861 return &lang_sub_obj;
4862 }
4864 # Rewrite a single Fortran 77 file.
4865 sub lang_f77_rewrite
4866 {
4867 return LANG_PROCESS;
4868 }
4870 # Rewrite a single preprocessed Fortran 77 file.
4871 sub lang_ppf77_rewrite
4872 {
4873 return LANG_PROCESS;
4874 }
4876 # Rewrite a single ratfor file.
4877 sub lang_ratfor_rewrite
4878 {
4879 return LANG_PROCESS;
4880 }
4882 # Rewrite a single Objective C file.
4883 sub lang_objc_rewrite
4884 {
4885 return &lang_sub_obj;
4886 }
4888 # Rewrite a single Java file.
4889 sub lang_java_rewrite
4890 {
4891 return LANG_SUBDIR;
4892 }
4894 # The lang_X_finish functions are called after all source file
4895 # processing is done. Each should handle defining rules for the
4896 # language, etc. A finish function is only called if a source file of
4897 # the appropriate type has been seen.
4899 sub lang_c_finish
4900 {
4901 # Push all libobjs files onto de_ansi_files. We actually only
4902 # push files which exist in the current directory, and which are
4903 # genuine source files.
4904 foreach my $file (keys %libsources)
4905 {
4906 if ($file =~ /^(.*)\.[cly]$/ && -f "$relative_dir/$file")
4907 {
4908 $de_ansi_files{$1} = ''
4909 }
4910 }
4912 if (option 'ansi2knr' && keys %de_ansi_files)
4913 {
4914 # Make all _.c files depend on their corresponding .c files.
4915 my @objects;
4916 foreach my $base (sort keys %de_ansi_files)
4917 {
4918 # Each _.c file must depend on ansi2knr; otherwise it
4919 # might be used in a parallel build before it is built.
4920 # We need to support files in the srcdir and in the build
4921 # dir (because these files might be auto-generated. But
4922 # we can't use $< -- some makes only define $< during a
4923 # suffix rule.
4924 my $ansfile = $de_ansi_files{$base} . $base . '.c';
4925 $output_rules .= ($base . "_.c: $ansfile \$(ANSI2KNR)\n\t"
4926 . '$(CPP) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS) $(CPPFLAGS) '
4927 . '`if test -f $(srcdir)/' . $ansfile
4928 . '; then echo $(srcdir)/' . $ansfile
4929 . '; else echo ' . $ansfile . '; fi` '
4930 . "| sed 's/^# \\([0-9]\\)/#line \\1/' "
4931 . '| $(ANSI2KNR) > $@'
4932 # If ansi2knr fails then we shouldn't
4933 # create the _.c file
4934 . " || rm -f \$\@\n");
4935 push (@objects, $base . '_.$(OBJEXT)');
4936 push (@objects, $base . '_.lo')
4937 if var ('LIBTOOL');
4938 }
4940 # Make all _.o (and _.lo) files depend on ansi2knr.
4941 # Use a sneaky little hack to make it print nicely.
4942 &pretty_print_rule ('', '', @objects, ':', '$(ANSI2KNR)');
4943 }
4944 }
4946 # This is a yacc helper which is called whenever we have decided to
4947 # compile a yacc file.
4948 sub lang_yacc_target_hook
4949 {
4950 my ($self, $aggregate, $output, $input) = @_;
4952 my $flag = $aggregate . "_YFLAGS";
4953 my $flagvar = var $flag;
4954 my $YFLAGSvar = var 'YFLAGS';
4955 if (($flagvar && $flagvar->variable_value =~ /$DASH_D_PATTERN/o)
4956 || ($YFLAGSvar && $YFLAGSvar->variable_value =~ /$DASH_D_PATTERN/o))
4957 {
4958 (my $output_base = $output) =~ s/$KNOWN_EXTENSIONS_PATTERN$//;
4959 my $header = $output_base . '.h';
4961 # Found a `-d' that applies to the compilation of this file.
4962 # Add a dependency for the generated header file, and arrange
4963 # for that file to be included in the distribution.
4964 # FIXME: this fails for `nodist_*_SOURCES'.
4965 $output_rules .= ("${header}: $output\n"
4966 # Recover from removal of $header
4967 . "\t\@if test ! -f \$@; then \\\n"
4968 . "\t rm -f $output; \\\n"
4969 . "\t \$(MAKE) $output; \\\n"
4970 . "\telse :; fi\n");
4971 &push_dist_common ($header);
4972 # If the files are built in the build directory, then we want
4973 # to remove them with `make clean'. If they are in srcdir
4974 # they shouldn't be touched. However, we can't determine this
4975 # statically, and the GNU rules say that yacc/lex output files
4976 # should be removed by maintainer-clean. So that's what we
4977 # do.
4978 $clean_files{$header} = MAINTAINER_CLEAN;
4979 }
4980 # Erase $OUTPUT on `make maintainer-clean' (by GNU standards).
4981 # See the comment above for $HEADER.
4982 $clean_files{$output} = MAINTAINER_CLEAN;
4983 }
4985 # This is a lex helper which is called whenever we have decided to
4986 # compile a lex file.
4987 sub lang_lex_target_hook
4988 {
4989 my ($self, $aggregate, $output, $input) = @_;
4990 # If the files are built in the build directory, then we want to
4991 # remove them with `make clean'. If they are in srcdir they
4992 # shouldn't be touched. However, we can't determine this
4993 # statically, and the GNU rules say that yacc/lex output files
4994 # should be removed by maintainer-clean. So that's what we do.
4995 $clean_files{$output} = MAINTAINER_CLEAN;
4996 }
4998 # This is a helper for both lex and yacc.
4999 sub yacc_lex_finish_helper
5000 {
5001 return if defined $language_scratch{'lex-yacc-done'};
5002 $language_scratch{'lex-yacc-done'} = 1;
5004 # If there is more than one distinct yacc (resp lex) source file
5005 # in a given directory, then the `ylwrap' program is required to
5006 # allow parallel builds to work correctly. FIXME: for now, no
5007 # line number.
5008 require_conf_file ($configure_ac, FOREIGN, 'ylwrap');
5009 if ($config_aux_dir_set_in_configure_in)
5010 {
5011 &define_variable ('YLWRAP', $config_aux_dir . "/ylwrap", INTERNAL);
5012 }
5013 else
5014 {
5015 &define_variable ('YLWRAP', '$(top_srcdir)/ylwrap', INTERNAL);
5016 }
5017 }
5019 sub lang_yacc_finish
5020 {
5021 return if defined $language_scratch{'yacc-done'};
5022 $language_scratch{'yacc-done'} = 1;
5024 reject_var 'YACCFLAGS', "`YACCFLAGS' obsolete; use `YFLAGS' instead";
5026 &yacc_lex_finish_helper
5027 if count_files_for_language ('yacc') > 1;
5028 }
5031 sub lang_lex_finish
5032 {
5033 return if defined $language_scratch{'lex-done'};
5034 $language_scratch{'lex-done'} = 1;
5036 &yacc_lex_finish_helper
5037 if count_files_for_language ('lex') > 1;
5038 }
5041 # Given a hash table of linker names, pick the name that has the most
5042 # precedence. This is lame, but something has to have global
5043 # knowledge in order to eliminate the conflict. Add more linkers as
5044 # required.
5045 sub resolve_linker
5046 {
5047 my (%linkers) = @_;
5049 foreach my $l (qw(GCJLINK CXXLINK F77LINK OBJCLINK))
5050 {
5051 return $l if defined $linkers{$l};
5052 }
5053 return 'LINK';
5054 }
5056 # Called to indicate that an extension was used.
5057 sub saw_extension
5058 {
5059 my ($ext) = @_;
5060 if (! defined $extension_seen{$ext})
5061 {
5062 $extension_seen{$ext} = 1;
5063 }
5064 else
5065 {
5066 ++$extension_seen{$ext};
5067 }
5068 }
5070 # Return the number of files seen for a given language. Knows about
5071 # special cases we care about. FIXME: this is hideous. We need
5072 # something that involves real language objects. For instance yacc
5073 # and yaccxx could both derive from a common yacc class which would
5074 # know about the strange ylwrap requirement. (Or better yet we could
5075 # just not support legacy yacc!)
5076 sub count_files_for_language
5077 {
5078 my ($name) = @_;
5080 my @names;
5081 if ($name eq 'yacc' || $name eq 'yaccxx')
5082 {
5083 @names = ('yacc', 'yaccxx');
5084 }
5085 elsif ($name eq 'lex' || $name eq 'lexxx')
5086 {
5087 @names = ('lex', 'lexxx');
5088 }
5089 else
5090 {
5091 @names = ($name);
5092 }
5094 my $r = 0;
5095 foreach $name (@names)
5096 {
5097 my $lang = $languages{$name};
5098 foreach my $ext (@{$lang->extensions})
5099 {
5100 $r += $extension_seen{$ext}
5101 if defined $extension_seen{$ext};
5102 }
5103 }
5105 return $r
5106 }
5108 # Called to ask whether source files have been seen . If HEADERS is 1,
5109 # headers can be included.
5110 sub saw_sources_p
5111 {
5112 my ($headers) = @_;
5114 # count all the sources
5115 my $count = 0;
5116 foreach my $val (values %extension_seen)
5117 {
5118 $count += $val;
5119 }
5121 if (!$headers)
5122 {
5123 $count -= count_files_for_language ('header');
5124 }
5126 return $count > 0;
5127 }
5130 # register_language (%ATTRIBUTE)
5131 # ------------------------------
5132 # Register a single language.
5133 # Each %ATTRIBUTE is of the form ATTRIBUTE => VALUE.
5134 sub register_language (%)
5135 {
5136 my (%option) = @_;
5138 # Set the defaults.
5139 $option{'ansi'} = 0
5140 unless defined $option{'ansi'};
5141 $option{'autodep'} = 'no'
5142 unless defined $option{'autodep'};
5143 $option{'linker'} = ''
5144 unless defined $option{'linker'};
5145 $option{'flags'} = []
5146 unless defined $option{'flags'};
5147 $option{'output_extensions'} = sub { return ( '.$(OBJEXT)', '.lo' ) }
5148 unless defined $option{'output_extensions'};
5150 my $lang = new Language (%option);
5152 # Fill indexes.
5153 $extension_map{$_} = $lang->name foreach @{$lang->extensions};
5154 $languages{$lang->name} = $lang;
5156 # Update the pattern of known extensions.
5157 accept_extensions (@{$lang->extensions});
5159 # Upate the $suffix_rule map.
5160 foreach my $suffix (@{$lang->extensions})
5161 {
5162 foreach my $dest (&{$lang->output_extensions} ($suffix))
5163 {
5164 register_suffix_rule (INTERNAL, $suffix, $dest);
5165 }
5166 }
5167 }
5169 # derive_suffix ($EXT, $OBJ)
5170 # --------------------------
5171 # This function is used to find a path from a user-specified suffix $EXT
5172 # to $OBJ or to some other suffix we recognize internally, e.g. `cc'.
5173 sub derive_suffix ($$)
5174 {
5175 my ($source_ext, $obj) = @_;
5177 while (! $extension_map{$source_ext}
5178 && $source_ext ne $obj
5179 && exists $suffix_rules->{$source_ext}
5180 && exists $suffix_rules->{$source_ext}{$obj})
5181 {
5182 $source_ext = $suffix_rules->{$source_ext}{$obj}[0];
5183 }
5185 return $source_ext;
5186 }
5189 ################################################################
5191 # Pretty-print something and append to output_rules.
5192 sub pretty_print_rule
5193 {
5194 $output_rules .= &makefile_wrap (@_);
5195 }
5198 ################################################################
5201 ## -------------------------------- ##
5202 ## Handling the conditional stack. ##
5203 ## -------------------------------- ##
5206 # $STRING
5207 # make_conditional_string ($NEGATE, $COND)
5208 # ----------------------------------------
5209 sub make_conditional_string ($$)
5210 {
5211 my ($negate, $cond) = @_;
5212 $cond = "${cond}_TRUE"
5213 unless $cond =~ /^TRUE|FALSE$/;
5214 $cond = Automake::Condition::conditional_negate ($cond)
5215 if $negate;
5216 return $cond;
5217 }
5220 # $COND
5221 # cond_stack_if ($NEGATE, $COND, $WHERE)
5222 # --------------------------------------
5223 sub cond_stack_if ($$$)
5224 {
5225 my ($negate, $cond, $where) = @_;
5227 error $where, "$cond does not appear in AM_CONDITIONAL"
5228 if ! $configure_cond{$cond} && $cond !~ /^TRUE|FALSE$/;
5230 push (@cond_stack, make_conditional_string ($negate, $cond));
5232 return new Automake::Condition (@cond_stack);
5233 }
5236 # $COND
5237 # cond_stack_else ($NEGATE, $COND, $WHERE)
5238 # ----------------------------------------
5239 sub cond_stack_else ($$$)
5240 {
5241 my ($negate, $cond, $where) = @_;
5243 if (! @cond_stack)
5244 {
5245 error $where, "else without if";
5246 return FALSE;
5247 }
5249 $cond_stack[$#cond_stack] =
5250 Automake::Condition::conditional_negate ($cond_stack[$#cond_stack]);
5252 # If $COND is given, check against it.
5253 if (defined $cond)
5254 {
5255 $cond = make_conditional_string ($negate, $cond);
5257 error ($where, "else reminder ($negate$cond) incompatible with "
5258 . "current conditional: $cond_stack[$#cond_stack]")
5259 if $cond_stack[$#cond_stack] ne $cond;
5260 }
5262 return new Automake::Condition (@cond_stack);
5263 }
5266 # $COND
5267 # cond_stack_endif ($NEGATE, $COND, $WHERE)
5268 # -----------------------------------------
5269 sub cond_stack_endif ($$$)
5270 {
5271 my ($negate, $cond, $where) = @_;
5272 my $old_cond;
5274 if (! @cond_stack)
5275 {
5276 error $where, "endif without if";
5277 return TRUE;
5278 }
5280 # If $COND is given, check against it.
5281 if (defined $cond)
5282 {
5283 $cond = make_conditional_string ($negate, $cond);
5285 error ($where, "endif reminder ($negate$cond) incompatible with "
5286 . "current conditional: $cond_stack[$#cond_stack]")
5287 if $cond_stack[$#cond_stack] ne $cond;
5288 }
5290 pop @cond_stack;
5292 return new Automake::Condition (@cond_stack);
5293 }
5299 ## ------------------------ ##
5300 ## Handling the variables. ##
5301 ## ------------------------ ##
5304 # &define_pretty_variable ($VAR, $COND, $WHERE, @VALUE)
5305 # -----------------------------------------------------
5306 # Like define_variable, but the value is a list, and the variable may
5307 # be defined conditionally. The second argument is the Condition
5308 # under which the value should be defined; this should be the empty
5309 # string to define the variable unconditionally. The third argument
5310 # is a list holding the values to use for the variable. The value is
5311 # pretty printed in the output file.
5312 sub define_pretty_variable ($$$@)
5313 {
5314 my ($var, $cond, $where, @value) = @_;
5316 if (! vardef ($var, $cond))
5317 {
5318 Automake::Variable::define ($var, VAR_AUTOMAKE, '', $cond, "@value",
5319 '', $where, VAR_PRETTY);
5320 rvar ($var)->rdef ($cond)->set_seen;
5321 }
5322 }
5325 # define_variable ($VAR, $VALUE, $WHERE)
5326 # --------------------------------------
5327 # Define a new user variable VAR to VALUE, but only if not already defined.
5328 sub define_variable ($$$)
5329 {
5330 my ($var, $value, $where) = @_;
5331 define_pretty_variable ($var, TRUE, $where, $value);
5332 }
5335 # define_files_variable ($VAR, \@BASENAME, $EXTENSION, $WHERE)
5336 # -----------------------------------------------------------
5337 # Define the $VAR which content is the list of file names composed of
5338 # a @BASENAME and the $EXTENSION.
5339 sub define_files_variable ($\@$$)
5340 {
5341 my ($var, $basename, $extension, $where) = @_;
5342 define_variable ($var,
5343 join (' ', map { "$_.$extension" } @$basename),
5344 $where);
5345 }
5348 # Like define_variable, but define a variable to be the configure
5349 # substitution by the same name.
5350 sub define_configure_variable ($)
5351 {
5352 my ($var) = @_;
5354 my $pretty = VAR_ASIS;
5355 my $owner = VAR_CONFIGURE;
5357 # Do not output the ANSI2KNR configure variable -- we AC_SUBST
5358 # it in protos.m4, but later redefine it elsewhere. This is
5359 # pretty hacky. We also don't output AMDEPBACKSLASH: it might
5360 # be subst'd by `\', which certainly would not be appreciated by
5361 # Make.
5362 if ($var eq 'ANSI2KNR' || $var eq 'AMDEPBACKSLASH')
5363 {
5364 $pretty = VAR_SILENT;
5365 $owner = VAR_AUTOMAKE;
5366 }
5368 Automake::Variable::define ($var, $owner, '', TRUE, subst $var,
5369 '', $configure_vars{$var}, $pretty);
5370 }
5373 # define_compiler_variable ($LANG)
5374 # --------------------------------
5375 # Define a compiler variable. We also handle defining the `LT'
5376 # version of the command when using libtool.
5377 sub define_compiler_variable ($)
5378 {
5379 my ($lang) = @_;
5381 my ($var, $value) = ($lang->compiler, $lang->compile);
5382 &define_variable ($var, $value, INTERNAL);
5383 &define_variable ("LT$var", "\$(LIBTOOL) --mode=compile $value", INTERNAL)
5384 if var ('LIBTOOL');
5385 }
5388 # define_linker_variable ($LANG)
5389 # ------------------------------
5390 # Define linker variables.
5391 sub define_linker_variable ($)
5392 {
5393 my ($lang) = @_;
5395 my ($var, $value) = ($lang->lder, $lang->ld);
5396 # CCLD = $(CC).
5397 &define_variable ($lang->lder, $lang->ld, INTERNAL);
5398 # CCLINK = $(CCLD) blah blah...
5399 &define_variable ($lang->linker,
5400 ((var ('LIBTOOL') ? '$(LIBTOOL) --mode=link ' : '')
5401 . $lang->link),
5402 INTERNAL);
5403 }
5405 ################################################################
5407 # &check_trailing_slash ($WHERE, $LINE)
5408 # --------------------------------------
5409 # Return 1 iff $LINE ends with a slash.
5410 # Might modify $LINE.
5411 sub check_trailing_slash ($\$)
5412 {
5413 my ($where, $line) = @_;
5415 # Ignore `##' lines.
5416 return 0 if $$line =~ /$IGNORE_PATTERN/o;
5418 # Catch and fix a common error.
5419 msg "syntax", $where, "whitespace following trailing backslash"
5420 if $$line =~ s/\\\s+\n$/\\\n/;
5422 return $$line =~ /\\$/;
5423 }
5426 # &read_am_file ($AMFILE, $WHERE)
5427 # -------------------------------
5428 # Read Makefile.am and set up %contents. Simultaneously copy lines
5429 # from Makefile.am into $output_trailer, or define variables as
5430 # appropriate. NOTE we put rules in the trailer section. We want
5431 # user rules to come after our generated stuff.
5432 sub read_am_file ($$)
5433 {
5434 my ($amfile, $where) = @_;
5436 my $am_file = new Automake::XFile ("< $amfile");
5437 verb "reading $amfile";
5439 # Keep track of the youngest output dependency.
5440 my $mtime = mtime $amfile;
5441 $output_deps_greatest_timestamp = $mtime
5442 if $mtime > $output_deps_greatest_timestamp;
5444 my $spacing = '';
5445 my $comment = '';
5446 my $blank = 0;
5447 my $saw_bk = 0;
5449 use constant IN_VAR_DEF => 0;
5450 use constant IN_RULE_DEF => 1;
5451 use constant IN_COMMENT => 2;
5452 my $prev_state = IN_RULE_DEF;
5454 while ($_ = $am_file->getline)
5455 {
5456 $where->set ("$amfile:$.");
5457 if (/$IGNORE_PATTERN/o)
5458 {
5459 # Merely delete comments beginning with two hashes.
5460 }
5461 elsif (/$WHITE_PATTERN/o)
5462 {
5463 error $where, "blank line following trailing backslash"
5464 if $saw_bk;
5465 # Stick a single white line before the incoming macro or rule.
5466 $spacing = "\n";
5467 $blank = 1;
5468 # Flush all comments seen so far.
5469 if ($comment ne '')
5470 {
5471 $output_vars .= $comment;
5472 $comment = '';
5473 }
5474 }
5475 elsif (/$COMMENT_PATTERN/o)
5476 {
5477 # Stick comments before the incoming macro or rule. Make
5478 # sure a blank line precedes the first block of comments.
5479 $spacing = "\n" unless $blank;
5480 $blank = 1;
5481 $comment .= $spacing . $_;
5482 $spacing = '';
5483 $prev_state = IN_COMMENT;
5484 }
5485 else
5486 {
5487 last;
5488 }
5489 $saw_bk = check_trailing_slash ($where, $_);
5490 }
5492 # We save the conditional stack on entry, and then check to make
5493 # sure it is the same on exit. This lets us conditionally include
5494 # other files.
5495 my @saved_cond_stack = @cond_stack;
5496 my $cond = new Automake::Condition (@cond_stack);
5498 my $last_var_name = '';
5499 my $last_var_type = '';
5500 my $last_var_value = '';
5501 my $last_where;
5502 # FIXME: shouldn't use $_ in this loop; it is too big.
5503 while ($_)
5504 {
5505 $where->set ("$amfile:$.");
5507 # Make sure the line is \n-terminated.
5508 chomp;
5509 $_ .= "\n";
5511 # Don't look at MAINTAINER_MODE_TRUE here. That shouldn't be
5512 # used by users. @MAINT@ is an anachronism now.
5513 $_ =~ s/\@MAINT\@//g
5514 unless $seen_maint_mode;
5516 my $new_saw_bk = check_trailing_slash ($where, $_);
5518 if (/$IGNORE_PATTERN/o)
5519 {
5520 # Merely delete comments beginning with two hashes.
5521 }
5522 elsif (/$WHITE_PATTERN/o)
5523 {
5524 # Stick a single white line before the incoming macro or rule.
5525 $spacing = "\n";
5526 error $where, "blank line following trailing backslash"
5527 if $saw_bk;
5528 }
5529 elsif (/$COMMENT_PATTERN/o)
5530 {
5531 # Stick comments before the incoming macro or rule.
5532 $comment .= $spacing . $_;
5533 $spacing = '';
5534 error $where, "comment following trailing backslash"
5535 if $saw_bk && $comment eq '';
5536 $prev_state = IN_COMMENT;
5537 }
5538 elsif ($saw_bk)
5539 {
5540 if ($prev_state == IN_RULE_DEF)
5541 {
5542 my $cond = new Automake::Condition @cond_stack;
5543 $output_trailer .= $cond->subst_string;
5544 $output_trailer .= $_;
5545 }
5546 elsif ($prev_state == IN_COMMENT)
5547 {
5548 # If the line doesn't start with a `#', add it.
5549 # We do this because a continued comment like
5550 # # A = foo \
5551 # bar \
5552 # baz
5553 # is not portable. BSD make doesn't honor
5554 # escaped newlines in comments.
5555 s/^#?/#/;
5556 $comment .= $spacing . $_;
5557 }
5558 else # $prev_state == IN_VAR_DEF
5559 {
5560 $last_var_value .= ' '
5561 unless $last_var_value =~ /\s$/;
5562 $last_var_value .= $_;
5564 if (!/\\$/)
5565 {
5566 Automake::Variable::define ($last_var_name, VAR_MAKEFILE,
5567 $last_var_type, $cond,
5568 $last_var_value, $comment,
5569 $last_where, VAR_ASIS)
5570 if $cond != FALSE;
5571 $comment = $spacing = '';
5572 }
5573 }
5574 }
5576 elsif (/$IF_PATTERN/o)
5577 {
5578 $cond = cond_stack_if ($1, $2, $where);
5579 }
5580 elsif (/$ELSE_PATTERN/o)
5581 {
5582 $cond = cond_stack_else ($1, $2, $where);
5583 }
5584 elsif (/$ENDIF_PATTERN/o)
5585 {
5586 $cond = cond_stack_endif ($1, $2, $where);
5587 }
5589 elsif (/$RULE_PATTERN/o)
5590 {
5591 # Found a rule.
5592 $prev_state = IN_RULE_DEF;
5594 # For now we have to output all definitions of user rules
5595 # and can't diagnose duplicates (see the comment in
5596 # rule_define). So we go on and ignore the return value.
5597 Automake::Rule::define ($1, $amfile, RULE_USER, $cond, $where);
5599 check_variable_expansions ($_, $where);
5601 $output_trailer .= $comment . $spacing;
5602 my $cond = new Automake::Condition @cond_stack;
5603 $output_trailer .= $cond->subst_string;
5604 $output_trailer .= $_;
5605 $comment = $spacing = '';
5606 }
5607 elsif (/$ASSIGNMENT_PATTERN/o)
5608 {
5609 # Found a macro definition.
5610 $prev_state = IN_VAR_DEF;
5611 $last_var_name = $1;
5612 $last_var_type = $2;
5613 $last_var_value = $3;
5614 $last_where = $where->clone;
5615 if ($3 ne '' && substr ($3, -1) eq "\\")
5616 {
5617 # We preserve the `\' because otherwise the long lines
5618 # that are generated will be truncated by broken
5619 # `sed's.
5620 $last_var_value = $3 . "\n";
5621 }
5623 if (!/\\$/)
5624 {
5625 Automake::Variable::define ($last_var_name, VAR_MAKEFILE,
5626 $last_var_type, $cond,
5627 $last_var_value, $comment,
5628 $last_where, VAR_ASIS)
5629 if $cond != FALSE;
5630 $comment = $spacing = '';
5631 }
5632 }
5633 elsif (/$INCLUDE_PATTERN/o)
5634 {
5635 my $path = $1;
5637 if ($path =~ s/^\$\(top_srcdir\)\///)
5638 {
5639 push (@include_stack, "\$\(top_srcdir\)/$path");
5640 # Distribute any included file.
5642 # Always use the $(top_srcdir) prefix in DIST_COMMON,
5643 # otherwise OSF make will implicitly copy the included
5644 # file in the build tree during `make distdir' to satisfy
5645 # the dependency.
5646 # (subdircond2.test and subdircond3.test will fail.)
5647 push_dist_common ("\$\(top_srcdir\)/$path");
5648 }
5649 else
5650 {
5651 $path =~ s/\$\(srcdir\)\///;
5652 push (@include_stack, "\$\(srcdir\)/$path");
5653 # Always use the $(srcdir) prefix in DIST_COMMON,
5654 # otherwise OSF make will implicitly copy the included
5655 # file in the build tree during `make distdir' to satisfy
5656 # the dependency.
5657 # (subdircond2.test and subdircond3.test will fail.)
5658 push_dist_common ("\$\(srcdir\)/$path");
5659 $path = $relative_dir . "/" . $path if $relative_dir ne '.';
5660 }
5661 $where->push_context ("`$path' included from here");
5662 &read_am_file ($path, $where);
5663 $where->pop_context;
5664 }
5665 else
5666 {
5667 # This isn't an error; it is probably a continued rule.
5668 # In fact, this is what we assume.
5669 $prev_state = IN_RULE_DEF;
5670 check_variable_expansions ($_, $where);
5671 $output_trailer .= $comment . $spacing;
5672 my $cond = new Automake::Condition @cond_stack;
5673 $output_trailer .= $cond->subst_string;
5674 $output_trailer .= $_;
5675 $comment = $spacing = '';
5676 error $where, "`#' comment at start of rule is unportable"
5677 if $_ =~ /^\t\s*\#/;
5678 }
5680 $saw_bk = $new_saw_bk;
5681 $_ = $am_file->getline;
5682 }
5684 $output_trailer .= $comment;
5686 error ($where, "trailing backslash on last line")
5687 if $saw_bk;
5689 error ($where, (@cond_stack ? "unterminated conditionals: @cond_stack"
5690 : "too many conditionals closed in include file"))
5691 if "@saved_cond_stack" ne "@cond_stack";
5692 }
5695 # define_standard_variables ()
5696 # ----------------------------
5697 # A helper for read_main_am_file which initializes configure variables
5698 # and variables from header-vars.am.
5699 sub define_standard_variables
5700 {
5701 my $saved_output_vars = $output_vars;
5702 my ($comments, undef, $rules) =
5703 file_contents_internal (1, "$libdir/am/header-vars.am",
5704 new Automake::Location);
5706 foreach my $var (sort keys %configure_vars)
5707 {
5708 &define_configure_variable ($var);
5709 }
5711 $output_vars .= $comments . $rules;
5712 }
5714 # Read main am file.
5715 sub read_main_am_file
5716 {
5717 my ($amfile) = @_;
5719 # This supports the strange variable tricks we are about to play.
5720 prog_error (macros_dump () . "variable defined before read_main_am_file")
5721 if (scalar (variables) > 0);
5723 # Generate copyright header for generated Makefile.in.
5724 # We do discard the output of predefined variables, handled below.
5725 $output_vars = ("# $in_file_name generated by automake "
5726 . $VERSION . " from $am_file_name.\n");
5727 $output_vars .= '# ' . subst ('configure_input') . "\n";
5728 $output_vars .= $gen_copyright;
5730 # We want to predefine as many variables as possible. This lets
5731 # the user set them with `+=' in Makefile.am.
5732 &define_standard_variables;
5734 # Read user file, which might override some of our values.
5735 &read_am_file ($amfile, new Automake::Location);
5736 }
5740 ################################################################
5742 # $FLATTENED
5743 # &flatten ($STRING)
5744 # ------------------
5745 # Flatten the $STRING and return the result.
5746 sub flatten
5747 {
5748 $_ = shift;
5750 s/\\\n//somg;
5751 s/\s+/ /g;
5752 s/^ //;
5753 s/ $//;
5755 return $_;
5756 }
5759 # @PARAGRAPHS
5760 # &make_paragraphs ($MAKEFILE, [%TRANSFORM])
5761 # ------------------------------------------
5762 # Load a $MAKEFILE, apply the %TRANSFORM, and return it as a list of
5763 # paragraphs.
5764 sub make_paragraphs ($%)
5765 {
5766 my ($file, %transform) = @_;
5768 # Complete %transform with global options and make it a Perl
5769 # $command.
5770 my $command =
5771 "s/$IGNORE_PATTERN//gm;"
5772 . transform (%transform,
5773 'CYGNUS' => !! option 'cygnus',
5774 'MAINTAINER-MODE'
5775 => $seen_maint_mode ? subst ('MAINTAINER_MODE_TRUE') : '',
5777 'BZIP2' => !! option 'dist-bzip2',
5778 'COMPRESS' => !! option 'dist-tarZ',
5779 'GZIP' => ! option 'no-dist-gzip',
5780 'SHAR' => !! option 'dist-shar',
5781 'ZIP' => !! option 'dist-zip',
5783 'INSTALL-INFO' => ! option 'no-installinfo',
5784 'INSTALL-MAN' => ! option 'no-installman',
5785 'CK-NEWS' => !! option 'check-news',
5787 'SUBDIRS' => !! var ('SUBDIRS'),
5788 'TOPDIR' => backname ($relative_dir),
5789 'TOPDIR_P' => $relative_dir eq '.',
5791 'BUILD' => $seen_canonical == AC_CANONICAL_SYSTEM,
5792 'HOST' => $seen_canonical,
5793 'TARGET' => $seen_canonical == AC_CANONICAL_SYSTEM,
5795 'LIBTOOL' => !! var ('LIBTOOL'))
5796 # We don't need more than two consecutive new-lines.
5797 . 's/\n{3,}/\n\n/g';
5799 # Swallow the file and apply the COMMAND.
5800 my $fc_file = new Automake::XFile "< $file";
5801 # Looks stupid?
5802 verb "reading $file";
5803 my $saved_dollar_slash = $/;
5804 undef $/;
5805 $_ = $fc_file->getline;
5806 $/ = $saved_dollar_slash;
5807 eval $command;
5808 $fc_file->close;
5809 my $content = $_;
5811 # Split at unescaped new lines.
5812 my @lines = split (/(?<!\\)\n/, $content);
5813 my @res;
5815 while (defined ($_ = shift @lines))
5816 {
5817 my $paragraph = "$_";
5818 # If we are a rule, eat as long as we start with a tab.
5819 if (/$RULE_PATTERN/smo)
5820 {
5821 while (defined ($_ = shift @lines) && $_ =~ /^\t/)
5822 {
5823 $paragraph .= "\n$_";
5824 }
5825 unshift (@lines, $_);
5826 }
5828 # If we are a comments, eat as much comments as you can.
5829 elsif (/$COMMENT_PATTERN/smo)
5830 {
5831 while (defined ($_ = shift @lines)
5832 && $_ =~ /$COMMENT_PATTERN/smo)
5833 {
5834 $paragraph .= "\n$_";
5835 }
5836 unshift (@lines, $_);
5837 }
5839 push @res, $paragraph;
5840 $paragraph = '';
5841 }
5843 return @res;
5844 }
5848 # ($COMMENT, $VARIABLES, $RULES)
5849 # &file_contents_internal ($IS_AM, $FILE, $WHERE, [%TRANSFORM])
5850 # -------------------------------------------------------------
5851 # Return contents of a file from $libdir/am, automatically skipping
5852 # macros or rules which are already known. $IS_AM iff the caller is
5853 # reading an Automake file (as opposed to the user's Makefile.am).
5854 sub file_contents_internal ($$$%)
5855 {
5856 my ($is_am, $file, $where, %transform) = @_;
5858 $where->set ($file);
5860 my $result_vars = '';
5861 my $result_rules = '';
5862 my $comment = '';
5863 my $spacing = '';
5865 # The following flags are used to track rules spanning across
5866 # multiple paragraphs.
5867 my $is_rule = 0; # 1 if we are processing a rule.
5868 my $discard_rule = 0; # 1 if the current rule should not be output.
5870 # We save the conditional stack on entry, and then check to make
5871 # sure it is the same on exit. This lets us conditionally include
5872 # other files.
5873 my @saved_cond_stack = @cond_stack;
5874 my $cond = new Automake::Condition (@cond_stack);
5876 foreach (make_paragraphs ($file, %transform))
5877 {
5878 # FIXME: no line number available.
5879 $where->set ($file);
5881 # Sanity checks.
5882 error $where, "blank line following trailing backslash:\n$_"
5883 if /\\$/;
5884 error $where, "comment following trailing backslash:\n$_"
5885 if /\\#/;
5887 if (/^$/)
5888 {
5889 $is_rule = 0;
5890 # Stick empty line before the incoming macro or rule.
5891 $spacing = "\n";
5892 }
5893 elsif (/$COMMENT_PATTERN/mso)
5894 {
5895 $is_rule = 0;
5896 # Stick comments before the incoming macro or rule.
5897 $comment = "$_\n";
5898 }
5900 # Handle inclusion of other files.
5901 elsif (/$INCLUDE_PATTERN/o)
5902 {
5903 if ($cond != FALSE)
5904 {
5905 my $file = ($is_am ? "$libdir/am/" : '') . $1;
5906 $where->push_context ("`$file' included from here");
5907 # N-ary `.=' fails.
5908 my ($com, $vars, $rules)
5909 = file_contents_internal ($is_am, $file, $where, %transform);
5910 $where->pop_context;
5911 $comment .= $com;
5912 $result_vars .= $vars;
5913 $result_rules .= $rules;
5914 }
5915 }
5917 # Handling the conditionals.
5918 elsif (/$IF_PATTERN/o)
5919 {
5920 $cond = cond_stack_if ($1, $2, $file);
5921 }
5922 elsif (/$ELSE_PATTERN/o)
5923 {
5924 $cond = cond_stack_else ($1, $2, $file);
5925 }
5926 elsif (/$ENDIF_PATTERN/o)
5927 {
5928 $cond = cond_stack_endif ($1, $2, $file);
5929 }
5931 # Handling rules.
5932 elsif (/$RULE_PATTERN/mso)
5933 {
5934 $is_rule = 1;
5935 $discard_rule = 0;
5936 # Separate relationship from optional actions: the first
5937 # `new-line tab" not preceded by backslash (continuation
5938 # line).
5939 my $paragraph = $_;
5940 /^(.*?)(?:(?<!\\)\n(\t.*))?$/s;
5941 my ($relationship, $actions) = ($1, $2 || '');
5943 # Separate targets from dependencies: the first colon.
5944 $relationship =~ /^([^:]+\S+) *: *(.*)$/som;
5945 my ($targets, $dependencies) = ($1, $2);
5946 # Remove the escaped new lines.
5947 # I don't know why, but I have to use a tmp $flat_deps.
5948 my $flat_deps = &flatten ($dependencies);
5949 my @deps = split (' ', $flat_deps);
5951 foreach (split (' ' , $targets))
5952 {
5953 # FIXME: 1. We are not robust to people defining several targets
5954 # at once, only some of them being in %dependencies. The
5955 # actions from the targets in %dependencies are usually generated
5956 # from the content of %actions, but if some targets in $targets
5957 # are not in %dependencies the ELSE branch will output
5958 # a rule for all $targets (i.e. the targets which are both
5959 # in %dependencies and $targets will have two rules).
5961 # FIXME: 2. The logic here is not able to output a
5962 # multi-paragraph rule several time (e.g. for each condition
5963 # it is defined for) because it only knows the first paragraph.
5965 # FIXME: 3. We are not robust to people defining a subset
5966 # of a previously defined "multiple-target" rule. E.g.
5967 # `foo:' after `foo bar:'.
5969 # Output only if not in FALSE.
5970 if (defined $dependencies{$_} && $cond != FALSE)
5971 {
5972 &depend ($_, @deps);
5973 if ($actions{$_})
5974 {
5975 $actions{$_} .= "\n$actions" if $actions;
5976 }
5977 else
5978 {
5979 $actions{$_} = $actions;
5980 }
5981 }
5982 else
5983 {
5984 # Free-lance dependency. Output the rule for all the
5985 # targets instead of one by one.
5986 my @undefined_conds =
5987 Automake::Rule::define ($targets, $file,
5988 $is_am ? RULE_AUTOMAKE : RULE_USER,
5989 $cond, $where);
5990 for my $undefined_cond (@undefined_conds)
5991 {
5992 my $condparagraph = $paragraph;
5993 $condparagraph =~ s/^/$undefined_cond->subst_string/gme;
5994 $result_rules .= "$spacing$comment$condparagraph\n";
5995 }
5996 if (scalar @undefined_conds == 0)
5997 {
5998 # Remember to discard next paragraphs
5999 # if they belong to this rule.
6000 # (but see also FIXME: #2 above.)
6001 $discard_rule = 1;
6002 }
6003 $comment = $spacing = '';
6004 last;
6005 }
6006 }
6007 }
6009 elsif (/$ASSIGNMENT_PATTERN/mso)
6010 {
6011 my ($var, $type, $val) = ($1, $2, $3);
6012 error $where, "variable `$var' with trailing backslash"
6013 if /\\$/;
6015 $is_rule = 0;
6017 Automake::Variable::define ($var,
6018 $is_am ? VAR_AUTOMAKE : VAR_MAKEFILE,
6019 $type, $cond, $val, $comment, $where,
6020 VAR_ASIS)
6021 if $cond != FALSE;
6023 $comment = $spacing = '';
6024 }
6025 else
6026 {
6027 # This isn't an error; it is probably some tokens which
6028 # configure is supposed to replace, such as `@SET-MAKE@',
6029 # or some part of a rule cut by an if/endif.
6030 if (! $cond->false && ! ($is_rule && $discard_rule))
6031 {
6032 s/^/$cond->subst_string/gme;
6033 $result_rules .= "$spacing$comment$_\n";
6034 }
6035 $comment = $spacing = '';
6036 }
6037 }
6039 error ($where, @cond_stack ?
6040 "unterminated conditionals: @cond_stack" :
6041 "too many conditionals closed in include file")
6042 if "@saved_cond_stack" ne "@cond_stack";
6044 return ($comment, $result_vars, $result_rules);
6045 }
6048 # $CONTENTS
6049 # &file_contents ($BASENAME, $WHERE, [%TRANSFORM])
6050 # ------------------------------------------------
6051 # Return contents of a file from $libdir/am, automatically skipping
6052 # macros or rules which are already known.
6053 sub file_contents ($$%)
6054 {
6055 my ($basename, $where, %transform) = @_;
6056 my ($comments, $variables, $rules) =
6057 file_contents_internal (1, "$libdir/am/$basename.am", $where,
6058 %transform);
6059 return "$comments$variables$rules";
6060 }
6063 # $REGEXP
6064 # &transform (%PAIRS)
6065 # -------------------
6066 # For each ($TOKEN, $VAL) in %PAIRS produce a replacement expression
6067 # suitable for file_contents which:
6068 # - replaces %$TOKEN% with $VAL,
6069 # - enables/disables ?$TOKEN? and ?!$TOKEN?,
6070 # - replaces %?$TOKEN% with TRUE or FALSE.
6071 sub transform (%)
6072 {
6073 my (%pairs) = @_;
6074 my $result = '';
6076 while (my ($token, $val) = each %pairs)
6077 {
6078 $result .= "s/\Q%$token%\E/\Q$val\E/gm;";
6079 if ($val)
6080 {
6081 $result .= "s/\Q?$token?\E//gm;s/^.*\Q?!$token?\E.*\\n//gm;";
6082 $result .= "s/\Q%?$token%\E/TRUE/gm;";
6083 }
6084 else
6085 {
6086 $result .= "s/\Q?!$token?\E//gm;s/^.*\Q?$token?\E.*\\n//gm;";
6087 $result .= "s/\Q%?$token%\E/FALSE/gm;";
6088 }
6089 }
6091 return $result;
6092 }
6095 # &append_exeext ($MACRO)
6096 # -----------------------
6097 # Macro is an Automake magic macro which primary is PROGRAMS, e.g.
6098 # bin_PROGRAMS. Make sure these programs have $(EXEEXT) appended.
6099 sub append_exeext ($)
6100 {
6101 my ($macro) = @_;
6103 prog_error "append_exeext ($macro)"
6104 unless $macro =~ /_PROGRAMS$/;
6106 transform_variable_recursively
6107 ($macro, $macro, 'am__EXEEXT', 0, INTERNAL,
6108 sub {
6109 my ($subvar, $val, $cond, $full_cond) = @_;
6110 # Append $(EXEEXT) unless the user did it already, or it's a
6111 # @substitution@.
6112 $val .= '$(EXEEXT)' unless $val =~ /(?:\$\(EXEEXT\)$|^[@]\w+[@]$)/;
6113 return $val;
6114 });
6115 }
6118 # @PREFIX
6119 # &am_primary_prefixes ($PRIMARY, $CAN_DIST, @PREFIXES)
6120 # -----------------------------------------------------
6121 # Find all variable prefixes that are used for install directories. A
6122 # prefix `zar' qualifies iff:
6123 #
6124 # * `zardir' is a variable.
6125 # * `zar_PRIMARY' is a variable.
6126 #
6127 # As a side effect, it looks for misspellings. It is an error to have
6128 # a variable ending in a "reserved" suffix whose prefix is unknown, e.g.
6129 # "bin_PROGRAMS". However, unusual prefixes are allowed if a variable
6130 # of the same name (with "dir" appended) exists. For instance, if the
6131 # variable "zardir" is defined, then "zar_PROGRAMS" becomes valid.
6132 # This is to provide a little extra flexibility in those cases which
6133 # need it.
6134 sub am_primary_prefixes ($$@)
6135 {
6136 my ($primary, $can_dist, @prefixes) = @_;
6138 local $_;
6139 my %valid = map { $_ => 0 } @prefixes;
6140 $valid{'EXTRA'} = 0;
6141 foreach my $var (variables)
6142 {
6143 # Automake is allowed to define variables that look like primaries
6144 # but which aren't. E.g. INSTALL_sh_DATA.
6145 # Autoconf can also define variables like INSTALL_DATA, so
6146 # ignore all configure variables (at least those which are not
6147 # redefined in Makefile.am).
6148 # FIXME: We should make sure that these variables are not
6149 # conditionally defined (or else adjust the condition below).
6150 my $def = $var->def (TRUE);
6151 next if $def && $def->owner != VAR_MAKEFILE;
6153 my $varname = $var->name;
6155 if ($varname =~ /^(nobase_)?(dist_|nodist_)?(.*)_$primary$/)
6156 {
6157 my ($base, $dist, $X) = ($1 || '', $2 || '', $3 || '');
6158 if ($dist ne '' && ! $can_dist)
6159 {
6160 err_var ($var,
6161 "invalid variable `$varname': `dist' is forbidden");
6162 }
6163 # Standard directories must be explicitly allowed.
6164 elsif (! defined $valid{$X} && exists $standard_prefix{$X})
6165 {
6166 err_var ($var,
6167 "`${X}dir' is not a legitimate directory " .
6168 "for `$primary'");
6169 }
6170 # A not explicitly valid directory is allowed if Xdir is defined.
6171 elsif (! defined $valid{$X} &&
6172 $var->requires_variables ("`$varname' is used", "${X}dir"))
6173 {
6174 # Nothing to do. Any error message has been output
6175 # by $var->requires_variables.
6176 }
6177 else
6178 {
6179 # Ensure all extended prefixes are actually used.
6180 $valid{"$base$dist$X"} = 1;
6181 }
6182 }
6183 }
6185 # Return only those which are actually defined.
6186 return sort grep { var ($_ . '_' . $primary) } keys %valid;
6187 }
6190 # Handle `where_HOW' variable magic. Does all lookups, generates
6191 # install code, and possibly generates code to define the primary
6192 # variable. The first argument is the name of the .am file to munge,
6193 # the second argument is the primary variable (e.g. HEADERS), and all
6194 # subsequent arguments are possible installation locations.
6195 #
6196 # Returns list of [$location, $value] pairs, where
6197 # $value's are the values in all where_HOW variable, and $location
6198 # there associated location (the place here their parent variables were
6199 # defined).
6200 #
6201 # FIXME: this should be rewritten to be cleaner. It should be broken
6202 # up into multiple functions.
6203 #
6204 # Usage is: am_install_var (OPTION..., file, HOW, where...)
6205 sub am_install_var
6206 {
6207 my (@args) = @_;
6209 my $do_require = 1;
6210 my $can_dist = 0;
6211 my $default_dist = 0;
6212 while (@args)
6213 {
6214 if ($args[0] eq '-noextra')
6215 {
6216 $do_require = 0;
6217 }
6218 elsif ($args[0] eq '-candist')
6219 {
6220 $can_dist = 1;
6221 }
6222 elsif ($args[0] eq '-defaultdist')
6223 {
6224 $default_dist = 1;
6225 $can_dist = 1;
6226 }
6227 elsif ($args[0] !~ /^-/)
6228 {
6229 last;
6230 }
6231 shift (@args);
6232 }
6234 my ($file, $primary, @prefix) = @args;
6236 # Now that configure substitutions are allowed in where_HOW
6237 # variables, it is an error to actually define the primary. We
6238 # allow `JAVA', as it is customarily used to mean the Java
6239 # interpreter. This is but one of several Java hacks. Similarly,
6240 # `PYTHON' is customarily used to mean the Python interpreter.
6241 reject_var $primary, "`$primary' is an anachronism"
6242 unless $primary eq 'JAVA' || $primary eq 'PYTHON';
6244 # Get the prefixes which are valid and actually used.
6245 @prefix = am_primary_prefixes ($primary, $can_dist, @prefix);
6247 # If a primary includes a configure substitution, then the EXTRA_
6248 # form is required. Otherwise we can't properly do our job.
6249 my $require_extra;
6251 my @used = ();
6252 my @result = ();
6254 # True if the iteration is the first one. Used for instance to
6255 # output parts of the associated file only once.
6256 my $first = 1;
6257 foreach my $X (@prefix)
6258 {
6259 my $nodir_name = $X;
6260 my $one_name = $X . '_' . $primary;
6261 my $one_var = var $one_name;
6263 my $strip_subdir = 1;
6264 # If subdir prefix should be preserved, do so.
6265 if ($nodir_name =~ /^nobase_/)
6266 {
6267 $strip_subdir = 0;
6268 $nodir_name =~ s/^nobase_//;
6269 }
6271 # If files should be distributed, do so.
6272 my $dist_p = 0;
6273 if ($can_dist)
6274 {
6275 $dist_p = (($default_dist && $nodir_name !~ /^nodist_/)
6276 || (! $default_dist && $nodir_name =~ /^dist_/));
6277 $nodir_name =~ s/^(dist|nodist)_//;
6278 }
6281 # Use the location of the currently processed variable.
6282 # We are not processing a particular condition, so pick the first
6283 # available.
6284 my $tmpcond = $one_var->conditions->one_cond;
6285 my $where = $one_var->rdef ($tmpcond)->location->clone;
6287 # Append actual contents of where_PRIMARY variable to
6288 # @result, skipping @substitutions@.
6289 foreach my $locvals ($one_var->value_as_list_recursive (location => 1))
6290 {
6291 my ($loc, $value) = @$locvals;
6292 # Skip configure substitutions.
6293 if ($value =~ /^\@.*\@$/)
6294 {
6295 if ($nodir_name eq 'EXTRA')
6296 {
6297 error ($where,
6298 "`$one_name' contains configure substitution, "
6299 . "but shouldn't");
6300 }
6301 # Check here to make sure variables defined in
6302 # configure.ac do not imply that EXTRA_PRIMARY
6303 # must be defined.
6304 elsif (! defined $configure_vars{$one_name})
6305 {
6306 $require_extra = $one_name
6307 if $do_require;
6308 }
6309 }
6310 else
6311 {
6312 push (@result, $locvals);
6313 }
6314 }
6315 # A blatant hack: we rewrite each _PROGRAMS primary to include
6316 # EXEEXT.
6317 append_exeext ($one_name)
6318 if $primary eq 'PROGRAMS';
6319 # "EXTRA" shouldn't be used when generating clean targets,
6320 # all, or install targets. We used to warn if EXTRA_FOO was
6321 # defined uselessly, but this was annoying.
6322 next
6323 if $nodir_name eq 'EXTRA';
6325 if ($nodir_name eq 'check')
6326 {
6327 push (@check, '$(' . $one_name . ')');
6328 }
6329 else
6330 {
6331 push (@used, '$(' . $one_name . ')');
6332 }
6334 # Is this to be installed?
6335 my $install_p = $nodir_name ne 'noinst' && $nodir_name ne 'check';
6337 # If so, with install-exec? (or install-data?).
6338 my $exec_p = ($nodir_name =~ /$EXEC_DIR_PATTERN/o);
6340 my $check_options_p = $install_p && !! option 'std-options';
6342 # Use the location of the currently processed variable as context.
6343 $where->push_context ("while processing `$one_name'");
6345 # Singular form of $PRIMARY.
6346 (my $one_primary = $primary) =~ s/S$//;
6347 $output_rules .= &file_contents ($file, $where,
6348 FIRST => $first,
6350 PRIMARY => $primary,
6351 ONE_PRIMARY => $one_primary,
6352 DIR => $X,
6353 NDIR => $nodir_name,
6354 BASE => $strip_subdir,
6356 EXEC => $exec_p,
6357 INSTALL => $install_p,
6358 DIST => $dist_p,
6359 'CK-OPTS' => $check_options_p);
6361 $first = 0;
6362 }
6364 # The JAVA variable is used as the name of the Java interpreter.
6365 # The PYTHON variable is used as the name of the Python interpreter.
6366 if (@used && $primary ne 'JAVA' && $primary ne 'PYTHON')
6367 {
6368 # Define it.
6369 define_pretty_variable ($primary, TRUE, INTERNAL, @used);
6370 $output_vars .= "\n";
6371 }
6373 err_var ($require_extra,
6374 "`$require_extra' contains configure substitution,\n"
6375 . "but `EXTRA_$primary' not defined")
6376 if ($require_extra && ! var ('EXTRA_' . $primary));
6378 # Push here because PRIMARY might be configure time determined.
6379 push (@all, '$(' . $primary . ')')
6380 if @used && $primary ne 'JAVA' && $primary ne 'PYTHON';
6382 # Make the result unique. This lets the user use conditionals in
6383 # a natural way, but still lets us program lazily -- we don't have
6384 # to worry about handling a particular object more than once.
6385 # We will keep only one location per object.
6386 my %result = ();
6387 for my $pair (@result)
6388 {
6389 my ($loc, $val) = @$pair;
6390 $result{$val} = $loc;
6391 }
6392 my @l = sort keys %result;
6393 return map { [$result{$_}->clone, $_] } @l;
6394 }
6397 ################################################################
6399 # Each key in this hash is the name of a directory holding a
6400 # Makefile.in. These variables are local to `is_make_dir'.
6401 my %make_dirs = ();
6402 my $make_dirs_set = 0;
6404 sub is_make_dir
6405 {
6406 my ($dir) = @_;
6407 if (! $make_dirs_set)
6408 {
6409 foreach my $iter (@configure_input_files)
6410 {
6411 $make_dirs{dirname ($iter)} = 1;
6412 }
6413 # We also want to notice Makefile.in's.
6414 foreach my $iter (@other_input_files)
6415 {
6416 if ($iter =~ /Makefile\.in$/)
6417 {
6418 $make_dirs{dirname ($iter)} = 1;
6419 }
6420 }
6421 $make_dirs_set = 1;
6422 }
6423 return defined $make_dirs{$dir};
6424 }
6426 ################################################################
6428 # This variable is local to the "require file" set of functions.
6429 my @require_file_paths = ();
6432 # &maybe_push_required_file ($DIR, $FILE, $FULLFILE)
6433 # --------------------------------------------------
6434 # See if we want to push this file onto dist_common. This function
6435 # encodes the rules for deciding when to do so.
6436 sub maybe_push_required_file
6437 {
6438 my ($dir, $file, $fullfile) = @_;
6440 if ($dir eq $relative_dir)
6441 {
6442 push_dist_common ($file);
6443 return 1;
6444 }
6445 elsif ($relative_dir eq '.' && ! &is_make_dir ($dir))
6446 {
6447 # If we are doing the topmost directory, and the file is in a
6448 # subdir which does not have a Makefile, then we distribute it
6449 # here.
6451 # If a required file is above the source tree, it is important
6452 # to prefix it with `$(srcdir)' so that no VPATH search is
6453 # performed. Otherwise problems occur with Make implementations
6454 # that rewrite and simplify rules whose dependencies are found in a
6455 # VPATH location. Here is an example with OSF1/Tru64 Make.
6456 #
6457 # % cat Makefile
6458 # VPATH = sub
6459 # distdir: ../a
6460 # echo ../a
6461 # % ls
6462 # Makefile a
6463 # % make
6464 # echo a
6465 # a
6466 #
6467 # Dependency `../a' was found in `sub/../a', but this make
6468 # implementation simplified it as `a'. (Note that the sub/
6469 # directory does not even exist.)
6470 #
6471 # This kind of VPATH rewriting seems hard to cancel. The
6472 # distdir.am hack against VPATH rewriting works only when no
6473 # simplification is done, i.e., for dependencies which are in
6474 # subdirectories, not in enclosing directories. Hence, in
6475 # the latter case we use a full path to make sure no VPATH
6476 # search occurs.
6477 $fullfile = '$(srcdir)/' . $fullfile
6478 if $dir =~ m,^\.\.(?:$|/),;
6480 push_dist_common ($fullfile);
6481 return 1;
6482 }
6483 return 0;
6484 }
6487 # &require_file_internal ($WHERE, $MYSTRICT, @FILES)
6488 # --------------------------------------------------
6489 # Verify that the file must exist in the current directory.
6490 # $MYSTRICT is the strictness level at which this file becomes required.
6491 #
6492 # Must set require_file_paths before calling this function.
6493 # require_file_paths is set to hold a single directory (the one in
6494 # which the first file was found) before return.
6495 sub require_file_internal ($$@)
6496 {
6497 my ($where, $mystrict, @files) = @_;
6499 foreach my $file (@files)
6500 {
6501 my $fullfile;
6502 my $errdir;
6503 my $errfile;
6504 my $save_dir;
6506 my $found_it = 0;
6507 my $dangling_sym = 0;
6508 foreach my $dir (@require_file_paths)
6509 {
6510 $fullfile = $dir . "/" . $file;
6511 $errdir = $dir unless $errdir;
6513 # Use different name for "error filename". Otherwise on
6514 # an error the bad file will be reported as e.g.
6515 # `../../install-sh' when using the default
6516 # config_aux_path.
6517 $errfile = $errdir . '/' . $file;
6519 if (-l $fullfile && ! -f $fullfile)
6520 {
6521 $dangling_sym = 1;
6522 last;
6523 }
6524 elsif (-f $fullfile)
6525 {
6526 $found_it = 1;
6527 maybe_push_required_file ($dir, $file, $fullfile);
6528 $save_dir = $dir;
6529 last;
6530 }
6531 }
6533 # `--force-missing' only has an effect if `--add-missing' is
6534 # specified.
6535 if ($found_it && (! $add_missing || ! $force_missing))
6536 {
6537 # Prune the path list.
6538 @require_file_paths = $save_dir;
6539 }
6540 else
6541 {
6542 # If we've already looked for it, we're done. You might
6543 # wonder why we don't do this before searching for the
6544 # file. If we do that, then something like
6545 # AC_OUTPUT(subdir/foo foo) will fail to put foo.in into
6546 # DIST_COMMON.
6547 if (! $found_it)
6548 {
6549 next if defined $require_file_found{$fullfile};
6550 $require_file_found{$fullfile} = 1;
6551 }
6553 if ($strictness >= $mystrict)
6554 {
6555 if ($dangling_sym && $add_missing)
6556 {
6557 unlink ($fullfile);
6558 }
6560 my $trailer = '';
6561 my $suppress = 0;
6563 # Only install missing files according to our desired
6564 # strictness level.
6565 my $message = "required file `$errfile' not found";
6566 if ($add_missing)
6567 {
6568 if (-f ("$libdir/$file"))
6569 {
6570 $suppress = 1;
6572 # Install the missing file. Symlink if we
6573 # can, copy if we must. Note: delete the file
6574 # first, in case it is a dangling symlink.
6575 $message = "installing `$errfile'";
6576 # Windows Perl will hang if we try to delete a
6577 # file that doesn't exist.
6578 unlink ($errfile) if -f $errfile;
6579 if ($symlink_exists && ! $copy_missing)
6580 {
6581 if (! symlink ("$libdir/$file", $errfile))
6582 {
6583 $suppress = 0;
6584 $trailer = "; error while making link: $!";
6585 }
6586 }
6587 elsif (system ('cp', "$libdir/$file", $errfile))
6588 {
6589 $suppress = 0;
6590 $trailer = "\n error while copying";
6591 }
6592 }
6594 if (! maybe_push_required_file (dirname ($errfile),
6595 $file, $errfile))
6596 {
6597 if (! $found_it)
6598 {
6599 # We have added the file but could not push it
6600 # into DIST_COMMON (probably because this is
6601 # an auxiliary file and we are not processing
6602 # the top level Makefile). This is unfortunate,
6603 # since it means we are using a file which is not
6604 # distributed!
6606 # Get Automake to be run again: on the second
6607 # run the file will be found, and pushed into
6608 # the toplevel DIST_COMMON automatically.
6609 $automake_needs_to_reprocess_all_files = 1;
6610 }
6611 }
6613 # Prune the path list.
6614 @require_file_paths = &dirname ($errfile);
6615 }
6617 # If --force-missing was specified, and we have
6618 # actually found the file, then do nothing.
6619 next
6620 if $found_it && $force_missing;
6622 # If we couldn' install the file, but it is a target in
6623 # the Makefile, don't print anything. This allows files
6624 # like README, AUTHORS, or THANKS to be generated.
6625 next
6626 if !$suppress && rule $file;
6628 msg ($suppress ? 'note' : 'error', $where, "$message$trailer");
6629 }
6630 }
6631 }
6632 }
6634 # &require_file ($WHERE, $MYSTRICT, @FILES)
6635 # -----------------------------------------
6636 sub require_file ($$@)
6637 {
6638 my ($where, $mystrict, @files) = @_;
6639 @require_file_paths = $relative_dir;
6640 require_file_internal ($where, $mystrict, @files);
6641 }
6643 # &require_file_with_macro ($COND, $MACRO, $MYSTRICT, @FILES)
6644 # -----------------------------------------------------------
6645 sub require_file_with_macro ($$$@)
6646 {
6647 my ($cond, $macro, $mystrict, @files) = @_;
6648 $macro = rvar ($macro) unless ref $macro;
6649 require_file ($macro->rdef ($cond)->location, $mystrict, @files);
6650 }
6653 # &require_conf_file ($WHERE, $MYSTRICT, @FILES)
6654 # ----------------------------------------------
6655 # Looks in configuration path, as specified by AC_CONFIG_AUX_DIR.
6656 sub require_conf_file ($$@)
6657 {
6658 my ($where, $mystrict, @files) = @_;
6659 @require_file_paths = @config_aux_path;
6660 require_file_internal ($where, $mystrict, @files);
6661 my $dir = $require_file_paths[0];
6662 @config_aux_path = @require_file_paths;
6663 # Avoid unsightly '/.'s.
6664 $config_aux_dir = '$(top_srcdir)' . ($dir eq '.' ? "" : "/$dir");
6665 }
6668 # &require_conf_file_with_macro ($COND, $MACRO, $MYSTRICT, @FILES)
6669 # ----------------------------------------------------------------
6670 sub require_conf_file_with_macro ($$$@)
6671 {
6672 my ($cond, $macro, $mystrict, @files) = @_;
6673 require_conf_file (rvar ($macro)->rdef ($cond)->location,
6674 $mystrict, @files);
6675 }
6677 ################################################################
6679 # &require_build_directory ($DIRECTORY)
6680 # ------------------------------------
6681 # Emit rules to create $DIRECTORY if needed, and return
6682 # the file that any target requiring this directory should be made
6683 # dependent upon.
6684 sub require_build_directory ($)
6685 {
6686 my $directory = shift;
6687 my $dirstamp = "$directory/\$(am__dirstamp)";
6689 # Don't emit the rule twice.
6690 if (! defined $directory_map{$directory})
6691 {
6692 $directory_map{$directory} = 1;
6694 # Set a variable for the dirstamp basename.
6695 define_pretty_variable ('am__dirstamp', TRUE, INTERNAL,
6696 '$(am__leading_dot)dirstamp');
6698 # Directory must be removed by `make distclean'.
6699 $clean_files{$dirstamp} = DIST_CLEAN;
6701 $output_rules .= ("$dirstamp:\n"
6702 . "\t\@\$(mkdir_p) $directory\n"
6703 . "\t\@: > $dirstamp\n");
6704 }
6706 return $dirstamp;
6707 }
6709 # &require_build_directory_maybe ($FILE)
6710 # --------------------------------------
6711 # If $FILE lies in a subdirectory, emit a rule to create this
6712 # directory and return the file that $FILE should be made
6713 # dependent upon. Otherwise, just return the empty string.
6714 sub require_build_directory_maybe ($)
6715 {
6716 my $file = shift;
6717 my $directory = dirname ($file);
6719 if ($directory ne '.')
6720 {
6721 return require_build_directory ($directory);
6722 }
6723 else
6724 {
6725 return '';
6726 }
6727 }
6729 ################################################################
6731 # Push a list of files onto dist_common.
6732 sub push_dist_common
6733 {
6734 prog_error "push_dist_common run after handle_dist"
6735 if $handle_dist_run;
6736 Automake::Variable::define ('DIST_COMMON', VAR_AUTOMAKE, '+', TRUE, "@_",
6737 '', INTERNAL, VAR_PRETTY);
6738 }
6741 ################################################################
6743 # generate_makefile ($MAKEFILE_AM, $MAKEFILE_IN)
6744 # ----------------------------------------------
6745 # Generate a Makefile.in given the name of the corresponding Makefile and
6746 # the name of the file output by config.status.
6747 sub generate_makefile ($$)
6748 {
6749 my ($makefile_am, $makefile_in) = @_;
6751 # Reset all the Makefile.am related variables.
6752 initialize_per_input;
6754 # AUTOMAKE_OPTIONS can contains -W flags to disable or enable
6755 # warnings for this file. So hold any warning issued before
6756 # we have processed AUTOMAKE_OPTIONS.
6757 buffer_messages ('warning');
6759 # Name of input file ("Makefile.am") and output file
6760 # ("Makefile.in"). These have no directory components.
6761 $am_file_name = basename ($makefile_am);
6762 $in_file_name = basename ($makefile_in);
6764 # $OUTPUT is encoded. If it contains a ":" then the first element
6765 # is the real output file, and all remaining elements are input
6766 # files. We don't scan or otherwise deal with these input files,
6767 # other than to mark them as dependencies. See
6768 # &scan_autoconf_files for details.
6769 my ($makefile, @inputs) = split (/:/, $output_files{$makefile_in});
6771 $relative_dir = dirname ($makefile);
6772 $am_relative_dir = dirname ($makefile_am);
6774 read_main_am_file ($makefile_am);
6775 if (handle_options)
6776 {
6777 # Process buffered warnings.
6778 flush_messages;
6779 # Fatal error. Just return, so we can continue with next file.
6780 return;
6781 }
6782 # Process buffered warnings.
6783 flush_messages;
6785 # There are a few install-related variables that you should not define.
6786 foreach my $var ('PRE_INSTALL', 'POST_INSTALL', 'NORMAL_INSTALL')
6787 {
6788 my $v = var $var;
6789 if ($v)
6790 {
6791 my $def = $v->def (TRUE);
6792 prog_error "$var not defined in condition TRUE"
6793 unless $def;
6794 reject_var $var, "`$var' should not be defined"
6795 if $def->owner != VAR_AUTOMAKE;
6796 }
6797 }
6799 # Catch some obsolete variables.
6800 msg_var ('obsolete', 'INCLUDES',
6801 "`INCLUDES' is the old name for `AM_CPPFLAGS' (or `*_CPPFLAGS')")
6802 if var ('INCLUDES');
6804 # At the toplevel directory, we might need config.guess, config.sub
6805 # or libtool scripts (ltconfig and ltmain.sh).
6806 if ($relative_dir eq '.')
6807 {
6808 # AC_CANONICAL_HOST and AC_CANONICAL_SYSTEM need config.guess and
6809 # config.sub.
6810 require_conf_file ($canonical_location, FOREIGN,
6811 'config.guess', 'config.sub')
6812 if $seen_canonical;
6813 }
6815 # Must do this after reading .am file.
6816 define_variable ('subdir', $relative_dir, INTERNAL);
6818 # If DIST_SUBDIRS is defined, make sure SUBDIRS is, so that
6819 # recursive rules are enabled.
6820 define_pretty_variable ('SUBDIRS', TRUE, INTERNAL, '')
6821 if var 'DIST_SUBDIRS' && ! var 'SUBDIRS';
6823 # Check first, because we might modify some state.
6824 check_cygnus;
6825 check_gnu_standards;
6826 check_gnits_standards;
6828 handle_configure ($makefile_am, $makefile_in, $makefile, @inputs);
6829 handle_gettext;
6830 handle_libraries;
6831 handle_ltlibraries;
6832 handle_programs;
6833 handle_scripts;
6835 # This must run first so that the ANSI2KNR definition is generated
6836 # before it is used by the _.c rules. We have to do this because
6837 # a variable which is used in a dependency must be defined before
6838 # the target, or else make won't properly see it.
6839 handle_compile;
6840 # This must be run after all the sources are scanned.
6841 handle_languages;
6843 # We have to run this after dealing with all the programs.
6844 handle_libtool;
6846 # Variables used by distdir.am and tags.am.
6847 define_pretty_variable ('SOURCES', TRUE, INTERNAL, @sources);
6848 define_pretty_variable ('DIST_SOURCES', TRUE, INTERNAL, @dist_sources);
6850 handle_multilib;
6851 handle_texinfo;
6852 handle_emacs_lisp;
6853 handle_python;
6854 handle_java;
6855 handle_man_pages;
6856 handle_data;
6857 handle_headers;
6858 handle_subdirs;
6859 handle_tags;
6860 handle_minor_options;
6861 handle_tests;
6863 # This must come after most other rules.
6864 handle_dist;
6866 handle_footer;
6867 do_check_merge_target;
6868 handle_all ($makefile);
6870 # FIXME: Gross!
6871 if (var ('lib_LTLIBRARIES') && var ('bin_PROGRAMS'))
6872 {
6873 $output_rules .= "install-binPROGRAMS: install-libLTLIBRARIES\n\n";
6874 }
6876 handle_install;
6877 handle_clean ($makefile);
6878 handle_factored_dependencies;
6880 # Comes last, because all the above procedures may have
6881 # defined or overridden variables.
6882 $output_vars .= output_variables;
6884 check_typos;
6886 if (! -d ($output_directory . '/' . $am_relative_dir))
6887 {
6888 mkdir ($output_directory . '/' . $am_relative_dir, 0755);
6889 }
6891 my ($out_file) = $output_directory . '/' . $makefile_in;
6893 # We make sure that `all:' is the first target.
6894 my $output =
6895 "$output_vars$output_all$output_header$output_rules$output_trailer";
6897 # Decide whether we must update the output file or not.
6898 # We have to update in the following situations.
6899 # * $force_generation is set.
6900 # * any of the output dependencies is younger than the output
6901 # * the contents of the output is different (this can happen
6902 # if the project has been populated with a file listed in
6903 # @common_files since the last run).
6904 # Output's dependencies are split in two sets:
6905 # * dependencies which are also configure dependencies
6906 # These do not change between each Makefile.am
6907 # * other dependencies, specific to the Makefile.am being processed
6908 # (such as the Makefile.am itself, or any Makefile fragment
6909 # it includes).
6910 my $timestamp = mtime $out_file;
6911 if (! $force_generation
6912 && $configure_deps_greatest_timestamp < $timestamp
6913 && $output_deps_greatest_timestamp < $timestamp
6914 && $output eq contents ($out_file))
6915 {
6916 verb "$out_file unchanged";
6917 # No need to update.
6918 return;
6919 }
6921 if (-e $out_file)
6922 {
6923 unlink ($out_file)
6924 or fatal "cannot remove $out_file: $!\n";
6925 }
6927 my $gm_file = new Automake::XFile "> $out_file";
6928 verb "creating $out_file";
6929 print $gm_file $output;
6930 }
6932 ################################################################
6937 ################################################################
6939 # Print usage information.
6940 sub usage ()
6941 {
6942 print "Usage: $0 [OPTION] ... [Makefile]...
6944 Generate Makefile.in for configure from Makefile.am.
6946 Operation modes:
6947 --help print this help, then exit
6948 --version print version number, then exit
6949 -v, --verbose verbosely list files processed
6950 --no-force only update Makefile.in's that are out of date
6951 -W, --warnings=CATEGORY report the warnings falling in CATEGORY
6953 Dependency tracking:
6954 -i, --ignore-deps disable dependency tracking code
6955 --include-deps enable dependency tracking code
6957 Flavors:
6958 --cygnus assume program is part of Cygnus-style tree
6959 --foreign set strictness to foreign
6960 --gnits set strictness to gnits
6961 --gnu set strictness to gnu
6963 Library files:
6964 -a, --add-missing add missing standard files to package
6965 --libdir=DIR directory storing library files
6966 -c, --copy with -a, copy missing files (default is symlink)
6967 -f, --force-missing force update of standard files
6969 ";
6970 Automake::ChannelDefs::usage;
6972 my ($last, @lcomm);
6973 $last = '';
6974 foreach my $iter (sort ((@common_files, @common_sometimes)))
6975 {
6976 push (@lcomm, $iter) unless $iter eq $last;
6977 $last = $iter;
6978 }
6980 my @four;
6981 print "\nFiles which are automatically distributed, if found:\n";
6982 format USAGE_FORMAT =
6983 @<<<<<<<<<<<<<<<< @<<<<<<<<<<<<<<<< @<<<<<<<<<<<<<<<< @<<<<<<<<<<<<<<<<
6984 $four[0], $four[1], $four[2], $four[3]
6985 .
6986 $~ = "USAGE_FORMAT";
6988 my $cols = 4;
6989 my $rows = int(@lcomm / $cols);
6990 my $rest = @lcomm % $cols;
6992 if ($rest)
6993 {
6994 $rows++;
6995 }
6996 else
6997 {
6998 $rest = $cols;
6999 }
7001 for (my $y = 0; $y < $rows; $y++)
7002 {
7003 @four = ("", "", "", "");
7004 for (my $x = 0; $x < $cols; $x++)
7005 {
7006 last if $y + 1 == $rows && $x == $rest;
7008 my $idx = (($x > $rest)
7009 ? ($rows * $rest + ($rows - 1) * ($x - $rest))
7010 : ($rows * $x));
7012 $idx += $y;
7013 $four[$x] = $lcomm[$idx];
7014 }
7015 write;
7016 }
7018 print "\nReport bugs to <bug-automake\@gnu.org>.\n";
7020 # --help always returns 0 per GNU standards.
7021 exit 0;
7022 }
7025 # &version ()
7026 # -----------
7027 # Print version information
7028 sub version ()
7029 {
7030 print <<EOF;
7031 automake (GNU $PACKAGE) $VERSION
7032 Written by Tom Tromey <tromey\@redhat.com>.
7034 Copyright 2003 Free Software Foundation, Inc.
7035 This is free software; see the source for copying conditions. There is NO
7036 warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
7037 EOF
7038 # --version always returns 0 per GNU standards.
7039 exit 0;
7040 }
7042 ################################################################
7044 # Parse command line.
7045 sub parse_arguments ()
7046 {
7047 # Start off as gnu.
7048 set_strictness ('gnu');
7050 my $cli_where = new Automake::Location;
7051 my %cli_options =
7052 (
7053 'libdir:s' => \$libdir,
7054 'gnu' => sub { set_strictness ('gnu'); },
7055 'gnits' => sub { set_strictness ('gnits'); },
7056 'cygnus' => sub { set_global_option ('cygnus', $cli_where); },
7057 'foreign' => sub { set_strictness ('foreign'); },
7058 'include-deps' => sub { unset_global_option ('no-dependencies'); },
7059 'i|ignore-deps' => sub { set_global_option ('no-dependencies',
7060 $cli_where); },
7061 'no-force' => sub { $force_generation = 0; },
7062 'f|force-missing' => \$force_missing,
7063 'o|output-dir:s' => \$output_directory,
7064 'a|add-missing' => \$add_missing,
7065 'c|copy' => \$copy_missing,
7066 'v|verbose' => sub { setup_channel 'verb', silent => 0; },
7067 'W|warnings:s' => \&parse_warnings,
7068 # These long options (--Werror and --Wno-error) for backward
7069 # compatibility. Use -Werror and -Wno-error today.
7070 'Werror' => sub { parse_warnings 'W', 'error'; },
7071 'Wno-error' => sub { parse_warnings 'W', 'no-error'; },
7072 );
7073 use Getopt::Long;
7074 Getopt::Long::config ("bundling", "pass_through");
7076 # See if --version or --help is used. We want to process these before
7077 # anything else because the GNU Coding Standards require us to
7078 # `exit 0' after processing these options, and we can't guarantee this
7079 # if we treat other options first. (Handling other options first
7080 # could produce error diagnostics, and in this condition it is
7081 # confusing if Automake does `exit 0'.)
7082 my %cli_options_1st_pass =
7083 (
7084 'version' => \&version,
7085 'help' => \&usage,
7086 # Recognize all other options (and their arguments) but do nothing.
7087 map { $_ => sub {} } (keys %cli_options)
7088 );
7089 my @ARGV_backup = @ARGV;
7090 Getopt::Long::GetOptions %cli_options_1st_pass
7091 or exit 1;
7092 @ARGV = @ARGV_backup;
7094 # Now *really* process the options. This time we know
7095 # that --help and --version are not present.
7096 Getopt::Long::GetOptions %cli_options
7097 or exit 1;
7099 if (defined $output_directory)
7100 {
7101 msg 'obsolete', "`--output-dir' is deprecated\n";
7102 }
7103 else
7104 {
7105 # In the next release we'll remove this entirely.
7106 $output_directory = '.';
7107 }
7109 foreach my $arg (@ARGV)
7110 {
7111 if ($arg =~ /^-./)
7112 {
7113 fatal ("unrecognized option `$arg'\n"
7114 . "Try `$0 --help' for more information.");
7115 }
7117 # Handle $local:$input syntax.
7118 my ($local, @rest) = split (/:/, $arg);
7119 @rest = ("$local.in",) unless @rest;
7120 my $input = locate_am @rest;
7121 if ($input)
7122 {
7123 push @input_files, $input;
7124 $output_files{$input} = join (':', ($local, @rest));
7125 }
7126 else
7127 {
7128 error "no Automake input file found in `$arg'";
7129 }
7130 }
7131 }
7133 ################################################################
7135 # Parse the WARNINGS environment variable.
7136 parse_WARNINGS;
7138 # Parse command line.
7139 parse_arguments;
7141 $configure_ac = require_configure_ac;
7143 # Do configure.ac scan only once.
7144 scan_autoconf_files;
7146 fatal "no `Makefile.am' found or specified\n"
7147 if ! @input_files;
7149 my $automake_has_run = 0;
7151 do
7152 {
7153 if ($automake_has_run)
7154 {
7155 verb 'processing Makefiles another time to fix them up.';
7156 prog_error 'running more than two times should never be needed.'
7157 if $automake_has_run >= 2;
7158 }
7159 $automake_needs_to_reprocess_all_files = 0;
7161 # Now do all the work on each file.
7162 foreach my $file (@input_files)
7163 {
7164 ($am_file = $file) =~ s/\.in$//;
7165 if (! -f ($am_file . '.am'))
7166 {
7167 error "`$am_file.am' does not exist";
7168 }
7169 else
7170 {
7171 # Any warning setting now local to this Makefile.am.
7172 dup_channel_setup;
7174 generate_makefile ($am_file . '.am', $file);
7176 # Back out any warning setting.
7177 drop_channel_setup;
7178 }
7179 }
7180 ++$automake_has_run;
7181 }
7182 while ($automake_needs_to_reprocess_all_files);
7184 exit $exit_code;
7187 ### Setup "GNU" style for perl-mode and cperl-mode.
7188 ## Local Variables:
7189 ## perl-indent-level: 2
7190 ## perl-continued-statement-offset: 2
7191 ## perl-continued-brace-offset: 0
7192 ## perl-brace-offset: 0
7193 ## perl-brace-imaginary-offset: 0
7194 ## perl-label-offset: -2
7195 ## cperl-indent-level: 2
7196 ## cperl-brace-offset: 0
7197 ## cperl-continued-brace-offset: 0
7198 ## cperl-label-offset: -2
7199 ## cperl-extra-newline-before-brace: t
7200 ## cperl-merge-trailing-else: nil
7201 ## cperl-continued-statement-offset: 2
7202 ## End: