| blob | a55f1a94b077a7b96b1586075a7503549c640f6c |
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 configure configure.ac configure.in depcomp elisp-comp
218 install-sh libversion.in mdate-sh missing mkinstalldirs
219 py-compile texinfo.tex ylwrap),
220 @libtool_files, @libtool_sometimes);
222 # Commonly used files we auto-include, but only sometimes.
223 my @common_sometimes =
224 qw(aclocal.m4 acconfig.h config.h.top config.h.bot stamp-vti);
226 # Standard directories from the GNU Coding Standards, and additional
227 # pkg* directories from Automake. Stored in a hash for fast member check.
228 my %standard_prefix =
229 map { $_ => 1 } (qw(bin data exec include info lib libexec lisp
230 localstate man man1 man2 man3 man4 man5 man6
231 man7 man8 man9 oldinclude pkgdatadir
232 pkgincludedir pkglibdir sbin sharedstate
233 sysconf));
235 # Copyright on generated Makefile.ins.
236 my $gen_copyright = "\
237 # Copyright (C) 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003
238 # Free Software Foundation, Inc.
239 # This Makefile.in is free software; the Free Software Foundation
240 # gives unlimited permission to copy and/or distribute it,
241 # with or without modifications, as long as this notice is preserved.
243 # This program is distributed in the hope that it will be useful,
244 # but WITHOUT ANY WARRANTY, to the extent permitted by law; without
245 # even the implied warranty of MERCHANTABILITY or FITNESS FOR A
246 # PARTICULAR PURPOSE.
247 ";
249 # These constants are returned by lang_*_rewrite functions.
250 # LANG_SUBDIR means that the resulting object file should be in a
251 # subdir if the source file is. In this case the file name cannot
252 # have `..' components.
253 use constant LANG_IGNORE => 0;
254 use constant LANG_PROCESS => 1;
255 use constant LANG_SUBDIR => 2;
257 # These are used when keeping track of whether an object can be built
258 # by two different paths.
259 use constant COMPILE_LIBTOOL => 1;
260 use constant COMPILE_ORDINARY => 2;
262 # We can't always associate a location to a variable or a rule,
263 # when its defined by Automake. We use INTERNAL in this case.
264 use constant INTERNAL => new Automake::Location;
265 \f
267 ## ---------------------------------- ##
268 ## Variables related to the options. ##
269 ## ---------------------------------- ##
271 # TRUE if we should always generate Makefile.in.
272 my $force_generation = 1;
274 # From the Perl manual.
275 my $symlink_exists = (eval 'symlink ("", "");', $@ eq '');
277 # TRUE if missing standard files should be installed.
278 my $add_missing = 0;
280 # TRUE if we should copy missing files; otherwise symlink if possible.
281 my $copy_missing = 0;
283 # TRUE if we should always update files that we know about.
284 my $force_missing = 0;
287 ## ---------------------------------------- ##
288 ## Variables filled during files scanning. ##
289 ## ---------------------------------------- ##
291 # Name of the configure.ac file.
292 my $configure_ac = require_configure_ac;
294 # Files found by scanning configure.ac for LIBOBJS.
295 my %libsources = ();
297 # Names used in AC_CONFIG_HEADER call.
298 my @config_headers = ();
299 # Where AC_CONFIG_HEADER appears.
300 my $config_header_location;
302 # Names used in AC_CONFIG_LINKS call.
303 my @config_links = ();
305 # Directory where output files go. Actually, output files are
306 # relative to this directory.
307 my $output_directory;
309 # List of Makefile.am's to process, and their corresponding outputs.
310 my @input_files = ();
311 my %output_files = ();
313 # Complete list of Makefile.am's that exist.
314 my @configure_input_files = ();
316 # List of files in AC_CONFIG_FILES/AC_OUTPUT without Makefile.am's,
317 # and their outputs.
318 my @other_input_files = ();
319 # Where the last AC_CONFIG_FILES/AC_OUTPUT appears.
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.
366 my @configure_deps = ();
368 # Hash table of AM_CONDITIONAL variables seen in configure.
369 my %configure_cond = ();
371 # This maps extensions onto language names.
372 my %extension_map = ();
374 # List of the DIST_COMMON files we discovered while reading
375 # configure.in
376 my $configure_dist_common = '';
378 # This maps languages names onto objects.
379 my %languages = ();
381 # List of targets we must always output.
382 # FIXME: Complete, and remove falsely required targets.
383 my %required_targets =
384 (
385 'all' => 1,
386 'dvi' => 1,
387 'pdf' => 1,
388 'ps' => 1,
389 'info' => 1,
390 'install-info' => 1,
391 'install' => 1,
392 'install-data' => 1,
393 'install-exec' => 1,
394 'uninstall' => 1,
396 # FIXME: Not required, temporary hacks.
397 # Well, actually they are sort of required: the -recursive
398 # targets will run them anyway...
399 'dvi-am' => 1,
400 'pdf-am' => 1,
401 'ps-am' => 1,
402 'info-am' => 1,
403 'install-data-am' => 1,
404 'install-exec-am' => 1,
405 'installcheck-am' => 1,
406 'uninstall-am' => 1,
408 'install-man' => 1,
409 );
411 # This is set to 1 when Automake needs to be run again.
412 # (For instance, this happens when an auxiliary file such as
413 # depcomp is added after the toplevel Makefile.in -- which
414 # should distribute depcomp -- has been generated.)
415 my $automake_needs_to_reprocess_all_files = 0;
417 # If a file name appears as a key in this hash, then it has already
418 # been checked for. This variable is local to the "require file"
419 # functions.
420 my %require_file_found = ();
422 # The name of the Makefile currently being processed.
423 my $am_file = 'BUG';
424 \f
426 ################################################################
428 ## ------------------------------------------ ##
429 ## Variables reset by &initialize_per_input. ##
430 ## ------------------------------------------ ##
432 # Basename and relative dir of the input file.
433 my $am_file_name;
434 my $am_relative_dir;
436 # Same but wrt Makefile.in.
437 my $in_file_name;
438 my $relative_dir;
440 # These two variables are used when generating each Makefile.in.
441 # They hold the Makefile.in until it is ready to be printed.
442 my $output_rules;
443 my $output_vars;
444 my $output_trailer;
445 my $output_all;
446 my $output_header;
448 # This is the conditional stack, updated on if/else/endif, and
449 # used to build Condition objects.
450 my @cond_stack;
452 # This holds the set of included files.
453 my @include_stack;
455 # This holds a list of directories which we must create at `dist'
456 # time. This is used in some strange scenarios involving weird
457 # AC_OUTPUT commands.
458 my %dist_dirs;
460 # List of dependencies for the obvious targets.
461 my @all;
462 my @check;
463 my @check_tests;
465 # Keys in this hash table are files to delete. The associated
466 # value tells when this should happen (MOSTLY_CLEAN, DIST_CLEAN, etc.)
467 my %clean_files;
469 # Keys in this hash table are object files or other files in
470 # subdirectories which need to be removed. This only holds files
471 # which are created by compilations. The value in the hash indicates
472 # when the file should be removed.
473 my %compile_clean_files;
475 # Keys in this hash table are directories where we expect to build a
476 # libtool object. We use this information to decide what directories
477 # to delete.
478 my %libtool_clean_directories;
480 # Value of `$(SOURCES)', used by tags.am.
481 my @sources;
482 # Sources which go in the distribution.
483 my @dist_sources;
485 # This hash maps object file names onto their corresponding source
486 # file names. This is used to ensure that each object is created
487 # by a single source file.
488 my %object_map;
490 # This hash maps object file names onto an integer value representing
491 # whether this object has been built via ordinary compilation or
492 # libtool compilation (the COMPILE_* constants).
493 my %object_compilation_map;
496 # This keeps track of the directories for which we've already
497 # created dirstamp code.
498 my %directory_map;
500 # All .P files.
501 my %dep_files;
503 # This is a list of all targets to run during "make dist".
504 my @dist_targets;
506 # Keys in this hash are the basenames of files which must depend on
507 # ansi2knr. Values are either the empty string, or the directory in
508 # which the ANSI source file appears; the directory must have a
509 # trailing `/'.
510 my %de_ansi_files;
512 # This is the name of the redirect `all' target to use.
513 my $all_target;
515 # This keeps track of which extensions we've seen (that we care
516 # about).
517 my %extension_seen;
519 # This is random scratch space for the language finish functions.
520 # Don't randomly overwrite it; examine other uses of keys first.
521 my %language_scratch;
523 # We keep track of which objects need special (per-executable)
524 # handling on a per-language basis.
525 my %lang_specific_files;
527 # This is set when `handle_dist' has finished. Once this happens,
528 # we should no longer push on dist_common.
529 my $handle_dist_run;
531 # Used to store a set of linkers needed to generate the sources currently
532 # under consideration.
533 my %linkers_used;
535 # True if we need `LINK' defined. This is a hack.
536 my $need_link;
538 # Was get_object_extension run?
539 # FIXME: This is a hack. a better switch should be found.
540 my $get_object_extension_was_run;
542 ################################################################
544 # var_SUFFIXES_trigger ($TYPE, $VALUE)
545 # ------------------------------------
546 # This is called by Automake::Variable::define() when SUFFIXES
547 # is defined ($TYPE eq '') or appended ($TYPE eq '+').
548 # The work here needs to be performed as a side-effect of the
549 # macro_define() call because SUFFIXES definitions impact
550 # on $KNOWN_EXTENSIONS_PATTERN which is used used when parsing
551 # the input am file.
552 sub var_SUFFIXES_trigger ($$)
553 {
554 my ($type, $value) = @_;
555 accept_extensions (split (' ', $value));
556 }
557 Automake::Variable::hook ('SUFFIXES', &var_SUFFIXES_trigger);
559 ################################################################
561 ## --------------------------------- ##
562 ## Forward subroutine declarations. ##
563 ## --------------------------------- ##
564 sub register_language (%);
565 sub file_contents_internal ($$$%);
566 sub define_files_variable ($\@$$);
569 # &initialize_per_input ()
570 # ------------------------
571 # (Re)-Initialize per-Makefile.am variables.
572 sub initialize_per_input ()
573 {
574 reset_local_duplicates ();
576 $am_file_name = '';
577 $am_relative_dir = '';
579 $in_file_name = '';
580 $relative_dir = '';
582 $output_rules = '';
583 $output_vars = '';
584 $output_trailer = '';
585 $output_all = '';
586 $output_header = '';
588 Automake::Options::reset;
589 Automake::Variable::reset;
590 Automake::Rule::reset;
592 @cond_stack = ();
594 @include_stack = ();
596 %dist_dirs = ();
598 @all = ();
599 @check = ();
600 @check_tests = ();
602 %clean_files = ();
604 @sources = ();
605 @dist_sources = ();
607 %object_map = ();
608 %object_compilation_map = ();
610 %directory_map = ();
612 %dep_files = ();
614 @dist_targets = ();
616 %de_ansi_files = ();
618 $all_target = '';
620 %extension_seen = ();
622 %language_scratch = ();
624 %lang_specific_files = ();
626 $handle_dist_run = 0;
628 $need_link = 0;
630 $get_object_extension_was_run = 0;
632 %compile_clean_files = ();
634 # We always include `.'. This isn't strictly correct.
635 %libtool_clean_directories = ('.' => 1);
636 }
639 ################################################################
641 # Initialize our list of languages that are internally supported.
643 # C.
644 register_language ('name' => 'c',
645 'Name' => 'C',
646 'config_vars' => ['CC'],
647 'ansi' => 1,
648 'autodep' => '',
649 'flags' => ['CFLAGS', 'CPPFLAGS'],
650 'compiler' => 'COMPILE',
651 'compile' => '$(CC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS) $(CPPFLAGS) $(AM_CFLAGS) $(CFLAGS)',
652 'lder' => 'CCLD',
653 'ld' => '$(CC)',
654 'linker' => 'LINK',
655 'link' => '$(CCLD) $(AM_CFLAGS) $(CFLAGS) $(AM_LDFLAGS) $(LDFLAGS) -o $@',
656 'compile_flag' => '-c',
657 'extensions' => ['.c'],
658 '_finish' => \&lang_c_finish);
660 # C++.
661 register_language ('name' => 'cxx',
662 'Name' => 'C++',
663 'config_vars' => ['CXX'],
664 'linker' => 'CXXLINK',
665 'link' => '$(CXXLD) $(AM_CXXFLAGS) $(CXXFLAGS) $(AM_LDFLAGS) $(LDFLAGS) -o $@',
666 'autodep' => 'CXX',
667 'flags' => ['CXXFLAGS', 'CPPFLAGS'],
668 'compile' => '$(CXX) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS) $(CPPFLAGS) $(AM_CXXFLAGS) $(CXXFLAGS)',
669 'compiler' => 'CXXCOMPILE',
670 'compile_flag' => '-c',
671 'output_flag' => '-o',
672 'lder' => 'CXXLD',
673 'ld' => '$(CXX)',
674 'pure' => 1,
675 'extensions' => ['.c++', '.cc', '.cpp', '.cxx', '.C']);
677 # Objective C.
678 register_language ('name' => 'objc',
679 'Name' => 'Objective C',
680 'config_vars' => ['OBJC'],
681 'linker' => 'OBJCLINK',,
682 'link' => '$(OBJCLD) $(AM_OBJCFLAGS) $(OBJCFLAGS) $(AM_LDFLAGS) $(LDFLAGS) -o $@',
683 'autodep' => 'OBJC',
684 'flags' => ['OBJCFLAGS', 'CPPFLAGS'],
685 'compile' => '$(OBJC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS) $(CPPFLAGS) $(AM_OBJCFLAGS) $(OBJCFLAGS)',
686 'compiler' => 'OBJCCOMPILE',
687 'compile_flag' => '-c',
688 'output_flag' => '-o',
689 'lder' => 'OBJCLD',
690 'ld' => '$(OBJC)',
691 'pure' => 1,
692 'extensions' => ['.m']);
694 # Headers.
695 register_language ('name' => 'header',
696 'Name' => 'Header',
697 'extensions' => ['.h', '.H', '.hxx', '.h++', '.hh',
698 '.hpp', '.inc'],
699 # No output.
700 'output_extensions' => sub { return () },
701 # Nothing to do.
702 '_finish' => sub { });
704 # Yacc (C & C++).
705 register_language ('name' => 'yacc',
706 'Name' => 'Yacc',
707 'config_vars' => ['YACC'],
708 'flags' => ['YFLAGS'],
709 'compile' => '$(YACC) $(YFLAGS) $(AM_YFLAGS)',
710 'compiler' => 'YACCCOMPILE',
711 'extensions' => ['.y'],
712 'output_extensions' => sub { (my $ext = $_[0]) =~ tr/y/c/;
713 return ($ext,) },
714 'rule_file' => 'yacc',
715 '_finish' => \&lang_yacc_finish,
716 '_target_hook' => \&lang_yacc_target_hook);
717 register_language ('name' => 'yaccxx',
718 'Name' => 'Yacc (C++)',
719 'config_vars' => ['YACC'],
720 'rule_file' => 'yacc',
721 'flags' => ['YFLAGS'],
722 'compiler' => 'YACCCOMPILE',
723 'compile' => '$(YACC) $(YFLAGS) $(AM_YFLAGS)',
724 'extensions' => ['.y++', '.yy', '.yxx', '.ypp'],
725 'output_extensions' => sub { (my $ext = $_[0]) =~ tr/y/c/;
726 return ($ext,) },
727 '_finish' => \&lang_yacc_finish,
728 '_target_hook' => \&lang_yacc_target_hook);
730 # Lex (C & C++).
731 register_language ('name' => 'lex',
732 'Name' => 'Lex',
733 'config_vars' => ['LEX'],
734 'rule_file' => 'lex',
735 'flags' => ['LFLAGS'],
736 'compile' => '$(LEX) $(LFLAGS) $(AM_LFLAGS)',
737 'compiler' => 'LEXCOMPILE',
738 'extensions' => ['.l'],
739 'output_extensions' => sub { (my $ext = $_[0]) =~ tr/l/c/;
740 return ($ext,) },
741 '_finish' => \&lang_lex_finish,
742 '_target_hook' => \&lang_lex_target_hook);
743 register_language ('name' => 'lexxx',
744 'Name' => 'Lex (C++)',
745 'config_vars' => ['LEX'],
746 'rule_file' => 'lex',
747 'flags' => ['LFLAGS'],
748 'compile' => '$(LEX) $(LFLAGS) $(AM_LFLAGS)',
749 'compiler' => 'LEXCOMPILE',
750 'extensions' => ['.l++', '.ll', '.lxx', '.lpp'],
751 'output_extensions' => sub { (my $ext = $_[0]) =~ tr/l/c/;
752 return ($ext,) },
753 '_finish' => \&lang_lex_finish,
754 '_target_hook' => \&lang_lex_target_hook);
756 # Assembler.
757 register_language ('name' => 'asm',
758 'Name' => 'Assembler',
759 'config_vars' => ['CCAS', 'CCASFLAGS'],
761 'flags' => ['CCASFLAGS'],
762 # Users can set AM_ASFLAGS to includes DEFS, INCLUDES,
763 # or anything else required. They can also set AS.
764 'compile' => '$(CCAS) $(AM_CCASFLAGS) $(CCASFLAGS)',
765 'compiler' => 'CCASCOMPILE',
766 'compile_flag' => '-c',
767 'extensions' => ['.s', '.S'],
769 # With assembly we still use the C linker.
770 '_finish' => \&lang_c_finish);
772 # Fortran 77
773 register_language ('name' => 'f77',
774 'Name' => 'Fortran 77',
775 'linker' => 'F77LINK',
776 'link' => '$(F77LD) $(AM_FFLAGS) $(FFLAGS) $(AM_LDFLAGS) $(LDFLAGS) -o $@',
777 'flags' => ['FFLAGS'],
778 'compile' => '$(F77) $(AM_FFLAGS) $(FFLAGS)',
779 'compiler' => 'F77COMPILE',
780 'compile_flag' => '-c',
781 'output_flag' => '-o',
782 'lder' => 'F77LD',
783 'ld' => '$(F77)',
784 'pure' => 1,
785 'extensions' => ['.f', '.for', '.f90']);
787 # Preprocessed Fortran 77
788 #
789 # The current support for preprocessing Fortran 77 just involves
790 # passing `$(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS)
791 # $(CPPFLAGS)' as additional flags to the Fortran 77 compiler, since
792 # this is how GNU Make does it; see the `GNU Make Manual, Edition 0.51
793 # for `make' Version 3.76 Beta' (specifically, from info file
794 # `(make)Catalogue of Rules').
795 #
796 # A better approach would be to write an Autoconf test
797 # (i.e. AC_PROG_FPP) for a Fortran 77 preprocessor, because not all
798 # Fortran 77 compilers know how to do preprocessing. The Autoconf
799 # macro AC_PROG_FPP should test the Fortran 77 compiler first for
800 # preprocessing capabilities, and then fall back on cpp (if cpp were
801 # available).
802 register_language ('name' => 'ppf77',
803 'Name' => 'Preprocessed Fortran 77',
804 'config_vars' => ['F77'],
805 'linker' => 'F77LINK',
806 'link' => '$(F77LD) $(AM_FFLAGS) $(FFLAGS) $(AM_LDFLAGS) $(LDFLAGS) -o $@',
807 'lder' => 'F77LD',
808 'ld' => '$(F77)',
809 'flags' => ['FFLAGS', 'CPPFLAGS'],
810 'compiler' => 'PPF77COMPILE',
811 'compile' => '$(F77) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS) $(CPPFLAGS) $(AM_FFLAGS) $(FFLAGS)',
812 'compile_flag' => '-c',
813 'output_flag' => '-o',
814 'pure' => 1,
815 'extensions' => ['.F']);
817 # Ratfor.
818 register_language ('name' => 'ratfor',
819 'Name' => 'Ratfor',
820 'config_vars' => ['F77'],
821 'linker' => 'F77LINK',
822 'link' => '$(F77LD) $(AM_FFLAGS) $(FFLAGS) $(AM_LDFLAGS) $(LDFLAGS) -o $@',
823 'lder' => 'F77LD',
824 'ld' => '$(F77)',
825 'flags' => ['RFLAGS', 'FFLAGS'],
826 # FIXME also FFLAGS.
827 'compile' => '$(F77) $(AM_FFLAGS) $(FFLAGS) $(AM_RFLAGS) $(RFLAGS)',
828 'compiler' => 'RCOMPILE',
829 'compile_flag' => '-c',
830 'output_flag' => '-o',
831 'pure' => 1,
832 'extensions' => ['.r']);
834 # Java via gcj.
835 register_language ('name' => 'java',
836 'Name' => 'Java',
837 'config_vars' => ['GCJ'],
838 'linker' => 'GCJLINK',
839 'link' => '$(GCJLD) $(AM_GCJFLAGS) $(GCJFLAGS) $(AM_LDFLAGS) $(LDFLAGS) -o $@',
840 'autodep' => 'GCJ',
841 'flags' => ['GCJFLAGS'],
842 'compile' => '$(GCJ) $(AM_GCJFLAGS) $(GCJFLAGS)',
843 'compiler' => 'GCJCOMPILE',
844 'compile_flag' => '-c',
845 'output_flag' => '-o',
846 'lder' => 'GCJLD',
847 'ld' => '$(GCJ)',
848 'pure' => 1,
849 'extensions' => ['.java', '.class', '.zip', '.jar']);
851 ################################################################
853 # Error reporting functions.
855 # err_am ($MESSAGE, [%OPTIONS])
856 # -----------------------------
857 # Uncategorized errors about the current Makefile.am.
858 sub err_am ($;%)
859 {
860 msg_am ('error', @_);
861 }
863 # err_ac ($MESSAGE, [%OPTIONS])
864 # -----------------------------
865 # Uncategorized errors about configure.ac.
866 sub err_ac ($;%)
867 {
868 msg_ac ('error', @_);
869 }
871 # msg_am ($CHANNEL, $MESSAGE, [%OPTIONS])
872 # ---------------------------------------
873 # Messages about about the current Makefile.am.
874 sub msg_am ($$;%)
875 {
876 my ($channel, $msg, %opts) = @_;
877 msg $channel, "${am_file}.am", $msg, %opts;
878 }
880 # msg_ac ($CHANNEL, $MESSAGE, [%OPTIONS])
881 # ---------------------------------------
882 # Messages about about configure.ac.
883 sub msg_ac ($$;%)
884 {
885 my ($channel, $msg, %opts) = @_;
886 msg $channel, $configure_ac, $msg, %opts;
887 }
889 ################################################################
891 # subst ($TEXT)
892 # -------------
893 # Return a configure-style substitution using the indicated text.
894 # We do this to avoid having the substitutions directly in automake.in;
895 # when we do that they are sometimes removed and this causes confusion
896 # and bugs.
897 sub subst ($)
898 {
899 my ($text) = @_;
900 return '@' . $text . '@';
901 }
903 ################################################################
906 # $BACKPATH
907 # &backname ($REL-DIR)
908 # --------------------
909 # If I `cd $REL-DIR', then to come back, I should `cd $BACKPATH'.
910 # For instance `src/foo' => `../..'.
911 # Works with non strictly increasing paths, i.e., `src/../lib' => `..'.
912 sub backname ($)
913 {
914 my ($file) = @_;
915 my @res;
916 foreach (split (/\//, $file))
917 {
918 next if $_ eq '.' || $_ eq '';
919 if ($_ eq '..')
920 {
921 pop @res;
922 }
923 else
924 {
925 push (@res, '..');
926 }
927 }
928 return join ('/', @res) || '.';
929 }
931 ################################################################
934 # Handle AUTOMAKE_OPTIONS variable. Return 1 on error, 0 otherwise.
935 sub handle_options
936 {
937 my $var = var ('AUTOMAKE_OPTIONS');
938 if ($var)
939 {
940 # FIXME: We should disallow conditional definitions of AUTOMAKE_OPTIONS.
941 if (process_option_list ($var->rdef (TRUE)->location,
942 $var->value_as_list_recursive (TRUE)))
943 {
944 return 1;
945 }
946 }
948 if ($strictness == GNITS)
949 {
950 set_option ('readme-alpha', INTERNAL);
951 set_option ('std-options', INTERNAL);
952 set_option ('check-news', INTERNAL);
953 }
955 return 0;
956 }
959 # get_object_extension ($OUT)
960 # ---------------------------
961 # Return object extension. Just once, put some code into the output.
962 # OUT is the name of the output file
963 sub get_object_extension
964 {
965 my ($out) = @_;
967 # Maybe require libtool library object files.
968 my $extension = '.$(OBJEXT)';
969 $extension = '.lo' if ($out =~ /\.la$/);
971 # Check for automatic de-ANSI-fication.
972 $extension = '$U' . $extension
973 if option 'ansi2knr';
975 $get_object_extension_was_run = 1;
977 return $extension;
978 }
981 # Call finish function for each language that was used.
982 sub handle_languages
983 {
984 if (! option 'no-dependencies')
985 {
986 # Include auto-dep code. Don't include it if DEP_FILES would
987 # be empty.
988 if (&saw_sources_p (0) && keys %dep_files)
989 {
990 # Set location of depcomp.
991 &define_variable ('depcomp', "\$(SHELL) $config_aux_dir/depcomp",
992 INTERNAL);
993 &define_variable ('am__depfiles_maybe', 'depfiles', INTERNAL);
995 require_conf_file ("$am_file.am", FOREIGN, 'depcomp');
997 my @deplist = sort keys %dep_files;
999 # We define this as a conditional variable because BSD
1000 # make can't handle backslashes for continuing comments on
1001 # the following line.
1002 define_pretty_variable ('DEP_FILES',
1003 new Automake::Condition ('AMDEP_TRUE'),
1004 INTERNAL, @deplist);
1006 # Generate each `include' individually. Irix 6 make will
1007 # not properly include several files resulting from a
1008 # variable expansion; generating many separate includes
1009 # seems safest.
1010 $output_rules .= "\n";
1011 foreach my $iter (@deplist)
1012 {
1013 $output_rules .= (subst ('AMDEP_TRUE')
1014 . subst ('am__include')
1015 . ' '
1016 . subst ('am__quote')
1017 . $iter
1018 . subst ('am__quote')
1019 . "\n");
1020 }
1022 # Compute the set of directories to remove in distclean-depend.
1023 my @depdirs = uniq (map { dirname ($_) } @deplist);
1024 $output_rules .= &file_contents ('depend',
1025 new Automake::Location,
1026 DEPDIRS => "@depdirs");
1027 }
1028 }
1029 else
1030 {
1031 &define_variable ('depcomp', '', INTERNAL);
1032 &define_variable ('am__depfiles_maybe', '', INTERNAL);
1033 }
1035 my %done;
1037 # Is the c linker needed?
1038 my $needs_c = 0;
1039 foreach my $ext (sort keys %extension_seen)
1040 {
1041 next unless $extension_map{$ext};
1043 my $lang = $languages{$extension_map{$ext}};
1045 my $rule_file = $lang->rule_file || 'depend2';
1047 # Get information on $LANG.
1048 my $pfx = $lang->autodep;
1049 my $fpfx = ($pfx eq '') ? 'CC' : $pfx;
1051 my ($AMDEP, $FASTDEP) =
1052 (option 'no-dependencies' || $lang->autodep eq 'no')
1053 ? ('FALSE', 'FALSE') : ('AMDEP', "am__fastdep$fpfx");
1055 my %transform = ('EXT' => $ext,
1056 'PFX' => $pfx,
1057 'FPFX' => $fpfx,
1058 'AMDEP' => $AMDEP,
1059 'FASTDEP' => $FASTDEP,
1060 '-c' => $lang->compile_flag || '',
1061 'MORE-THAN-ONE'
1062 => (count_files_for_language ($lang->name) > 1));
1064 # Generate the appropriate rules for this extension.
1065 if (((! option 'no-dependencies') && $lang->autodep ne 'no')
1066 || defined $lang->compile)
1067 {
1068 # Some C compilers don't support -c -o. Use it only if really
1069 # needed.
1070 my $output_flag = $lang->output_flag || '';
1071 $output_flag = '-o'
1072 if (! $output_flag
1073 && $lang->name eq 'c'
1074 && option 'subdir-objects');
1076 # Compute a possible derived extension.
1077 # This is not used by depend2.am.
1078 my $der_ext = (&{$lang->output_extensions} ($ext))[0];
1080 $output_rules .=
1081 file_contents ($rule_file,
1082 new Automake::Location,
1083 %transform,
1084 GENERIC => 1,
1086 'DERIVED-EXT' => $der_ext,
1088 # In this situation we know that the
1089 # object is in this directory, so
1090 # $(DEPDIR) is the correct location for
1091 # dependencies.
1092 DEPBASE => '$(DEPDIR)/$*',
1093 BASE => '$*',
1094 SOURCE => '$<',
1095 OBJ => '$@',
1096 OBJOBJ => '$@',
1097 LTOBJ => '$@',
1099 COMPILE => '$(' . $lang->compiler . ')',
1100 LTCOMPILE => '$(LT' . $lang->compiler . ')',
1101 -o => $output_flag);
1102 }
1104 # Now include code for each specially handled object with this
1105 # language.
1106 my %seen_files = ();
1107 foreach my $file (@{$lang_specific_files{$lang->name}})
1108 {
1109 my ($derived, $source, $obj, $myext) = split (' ', $file);
1111 # We might see a given object twice, for instance if it is
1112 # used under different conditions.
1113 next if defined $seen_files{$obj};
1114 $seen_files{$obj} = 1;
1116 prog_error ("found " . $lang->name .
1117 " in handle_languages, but compiler not defined")
1118 unless defined $lang->compile;
1120 my $obj_compile = $lang->compile;
1122 # Rewrite each occurence of `AM_$flag' in the compile
1123 # rule into `${derived}_$flag' if it exists.
1124 for my $flag (@{$lang->flags})
1125 {
1126 my $val = "${derived}_$flag";
1127 $obj_compile =~ s/\(AM_$flag\)/\($val\)/
1128 if set_seen ($val);
1129 }
1131 my $obj_ltcompile = '$(LIBTOOL) --mode=compile ' . $obj_compile;
1133 # We _need_ `-o' for per object rules.
1134 my $output_flag = $lang->output_flag || '-o';
1136 my $depbase = dirname ($obj);
1137 $depbase = ''
1138 if $depbase eq '.';
1139 $depbase .= '/'
1140 unless $depbase eq '';
1141 $depbase .= '$(DEPDIR)/' . basename ($obj);
1143 # Support for deansified files in subdirectories is ugly
1144 # enough to deserve an explanation.
1145 #
1146 # A Note about normal ansi2knr processing first. On
1147 #
1148 # AUTOMAKE_OPTIONS = ansi2knr
1149 # bin_PROGRAMS = foo
1150 # foo_SOURCES = foo.c
1151 #
1152 # we generate rules similar to:
1153 #
1154 # foo: foo$U.o; link ...
1155 # foo$U.o: foo$U.c; compile ...
1156 # foo_.c: foo.c; ansi2knr ...
1157 #
1158 # this is fairly compact, and will call ansi2knr depending
1159 # on the value of $U (`' or `_').
1160 #
1161 # It's harder with subdir sources. On
1162 #
1163 # AUTOMAKE_OPTIONS = ansi2knr
1164 # bin_PROGRAMS = foo
1165 # foo_SOURCES = sub/foo.c
1166 #
1167 # we have to create foo_.c in the current directory.
1168 # (Unless the user asks 'subdir-objects'.) This is important
1169 # in case the same file (`foo.c') is compiled from other
1170 # directories with different cpp options: foo_.c would
1171 # be preprocessed for only one set of options if it were
1172 # put in the subdirectory.
1173 #
1174 # Because foo$U.o must be built from either foo_.c or
1175 # sub/foo.c we can't be as concise as in the first example.
1176 # Instead we output
1177 #
1178 # foo: foo$U.o; link ...
1179 # foo_.o: foo_.c; compile ...
1180 # foo.o: sub/foo.c; compile ...
1181 # foo_.c: foo.c; ansi2knr ...
1182 #
1183 # This is why we'll now transform $rule_file twice
1184 # if we detect this case.
1185 # A first time we output the compile rule with `$U'
1186 # replaced by `_' and the source directory removed,
1187 # and another time we simply remove `$U'.
1188 #
1189 # Note that at this point $source (as computed by
1190 # &handle_single_transform_list) is `sub/foo$U.c'.
1191 # This can be confusing: it can be used as-is when
1192 # subdir-objects is set, otherwise you have to know
1193 # it really means `foo_.c' or `sub/foo.c'.
1194 my $objdir = dirname ($obj);
1195 my $srcdir = dirname ($source);
1196 if ($lang->ansi && $obj =~ /\$U/)
1197 {
1198 prog_error "`$obj' contains \$U, but `$source' doesn't."
1199 if $source !~ /\$U/;
1201 (my $source_ = $source) =~ s/\$U/_/g;
1202 # Explicitely clean the _.c files if they are in
1203 # a subdirectory. (In the current directory they get
1204 # erased by a `rm -f *_.c' rule.)
1205 $clean_files{$source_} = MOSTLY_CLEAN
1206 if $objdir ne '.';
1207 # Output an additional rule if _.c and .c are not in
1208 # the same directory. (_.c is always in $objdir.)
1209 if ($objdir ne $srcdir)
1210 {
1211 (my $obj_ = $obj) =~ s/\$U/_/g;
1212 (my $depbase_ = $depbase) =~ s/\$U/_/g;
1213 $source_ = basename ($source_);
1215 $output_rules .=
1216 file_contents ($rule_file,
1217 new Automake::Location,
1218 %transform,
1219 GENERIC => 0,
1221 DEPBASE => $depbase_,
1222 BASE => $obj_,
1223 SOURCE => $source_,
1224 OBJ => "$obj_$myext",
1225 OBJOBJ => "$obj_.obj",
1226 LTOBJ => "$obj_.lo",
1228 COMPILE => $obj_compile,
1229 LTCOMPILE => $obj_ltcompile,
1230 -o => $output_flag);
1231 $obj =~ s/\$U//g;
1232 $depbase =~ s/\$U//g;
1233 $source =~ s/\$U//g;
1234 }
1235 }
1237 $output_rules .=
1238 file_contents ($rule_file,
1239 new Automake::Location,
1240 %transform,
1241 GENERIC => 0,
1243 DEPBASE => $depbase,
1244 BASE => $obj,
1245 SOURCE => $source,
1246 # Use $myext and not `.o' here, in case
1247 # we are actually building a new source
1248 # file -- e.g. via yacc.
1249 OBJ => "$obj$myext",
1250 OBJOBJ => "$obj.obj",
1251 LTOBJ => "$obj.lo",
1253 COMPILE => $obj_compile,
1254 LTCOMPILE => $obj_ltcompile,
1255 -o => $output_flag);
1256 }
1258 # The rest of the loop is done once per language.
1259 next if defined $done{$lang};
1260 $done{$lang} = 1;
1262 # Load the language dependent Makefile chunks.
1263 my %lang = map { uc ($_) => 0 } keys %languages;
1264 $lang{uc ($lang->name)} = 1;
1265 $output_rules .= file_contents ('lang-compile',
1266 new Automake::Location,
1267 %transform, %lang);
1269 # If the source to a program consists entirely of code from a
1270 # `pure' language, for instance C++ for Fortran 77, then we
1271 # don't need the C compiler code. However if we run into
1272 # something unusual then we do generate the C code. There are
1273 # probably corner cases here that do not work properly.
1274 # People linking Java code to Fortran code deserve pain.
1275 $needs_c ||= ! $lang->pure;
1277 define_compiler_variable ($lang)
1278 if ($lang->compile);
1280 define_linker_variable ($lang)
1281 if ($lang->link);
1283 require_variables ("$am_file.am", $lang->Name . " source seen",
1284 TRUE, @{$lang->config_vars});
1286 # Call the finisher.
1287 $lang->finish;
1289 # Flags listed in `->flags' are user variables (per GNU Standards),
1290 # they should not be overriden in the Makefile...
1291 my @dont_override = @{$lang->flags};
1292 # ... and so is LDFLAGS.
1293 push @dont_override, 'LDFLAGS' if $lang->link;
1295 foreach my $flag (@dont_override)
1296 {
1297 my $var = var $flag;
1298 if ($var)
1299 {
1300 for my $cond ($var->conditions->conds)
1301 {
1302 if ($var->rdef ($cond)->owner == VAR_MAKEFILE)
1303 {
1304 msg_cond_var ('gnu', $cond, $flag,
1305 "`$flag' is a user variable, "
1306 . "you should not override it;\n"
1307 . "use `AM_$flag' instead.");
1308 }
1309 }
1310 }
1311 }
1312 }
1314 # If the project is entirely C++ or entirely Fortran 77 (i.e., 1
1315 # suffix rule was learned), don't bother with the C stuff. But if
1316 # anything else creeps in, then use it.
1317 $needs_c = 1
1318 if $need_link || suffix_rules_count > 1;
1320 if ($needs_c)
1321 {
1322 &define_compiler_variable ($languages{'c'})
1323 unless defined $done{$languages{'c'}};
1324 define_linker_variable ($languages{'c'});
1325 }
1326 }
1328 # Check to make sure a source defined in LIBOBJS is not explicitly
1329 # mentioned. This is a separate function (as opposed to being inlined
1330 # in handle_source_transform) because it isn't always appropriate to
1331 # do this check.
1332 sub check_libobjs_sources
1333 {
1334 my ($one_file, $unxformed) = @_;
1336 foreach my $prefix ('', 'EXTRA_', 'dist_', 'nodist_',
1337 'dist_EXTRA_', 'nodist_EXTRA_')
1338 {
1339 my @files;
1340 my $varname = $prefix . $one_file . '_SOURCES';
1341 my $var = var ($varname);
1342 if ($var)
1343 {
1344 @files = $var->value_as_list_recursive ('all');
1345 }
1346 elsif ($prefix eq '')
1347 {
1348 @files = ($unxformed . '.c');
1349 }
1350 else
1351 {
1352 next;
1353 }
1355 foreach my $file (@files)
1356 {
1357 err_var ($prefix . $one_file . '_SOURCES',
1358 "automatically discovered file `$file' should not" .
1359 " be explicitly mentioned")
1360 if defined $libsources{$file};
1361 }
1362 }
1363 }
1366 # @OBJECTS
1367 # handle_single_transform_list ($VAR, $TOPPARENT, $DERIVED, $OBJ, @FILES)
1368 # -----------------------------------------------------------------------
1369 # Does much of the actual work for handle_source_transform.
1370 # Arguments are:
1371 # $VAR is the name of the variable that the source filenames come from
1372 # $TOPPARENT is the name of the _SOURCES variable which is being processed
1373 # $DERIVED is the name of resulting executable or library
1374 # $OBJ is the object extension (e.g., `$U.lo')
1375 # @FILES is the list of source files to transform
1376 # Result is a list of the names of objects
1377 # %linkers_used will be updated with any linkers needed
1378 sub handle_single_transform_list ($$$$@)
1379 {
1380 my ($var, $topparent, $derived, $obj, @files) = @_;
1381 my @result = ();
1382 my $nonansi_obj = $obj;
1383 $nonansi_obj =~ s/\$U//g;
1385 # Turn sources into objects. We use a while loop like this
1386 # because we might add to @files in the loop.
1387 while (scalar @files > 0)
1388 {
1389 $_ = shift @files;
1391 # Configure substitutions in _SOURCES variables are errors.
1392 if (/^\@.*\@$/)
1393 {
1394 my $parent_msg = '';
1395 $parent_msg = "\nand is referred to from `$topparent'"
1396 if $topparent ne $var->name;
1397 err_var ($var,
1398 "`" . $var->name . "' includes configure substitution `$_'"
1399 . $parent_msg . ";\nconfigure " .
1400 "substitutions are not allowed in _SOURCES variables");
1401 next;
1402 }
1404 # If the source file is in a subdirectory then the `.o' is put
1405 # into the current directory, unless the subdir-objects option
1406 # is in effect.
1408 # Split file name into base and extension.
1409 next if ! /^(?:(.*)\/)?([^\/]*)($KNOWN_EXTENSIONS_PATTERN)$/;
1410 my $full = $_;
1411 my $directory = $1 || '';
1412 my $base = $2;
1413 my $extension = $3;
1415 # We must generate a rule for the object if it requires its own flags.
1416 my $renamed = 0;
1417 my ($linker, $object);
1419 # This records whether we've seen a derived source file (e.g.
1420 # yacc output).
1421 my $derived_source = 0;
1423 # This holds the `aggregate context' of the file we are
1424 # currently examining. If the file is compiled with
1425 # per-object flags, then it will be the name of the object.
1426 # Otherwise it will be `AM'. This is used by the target hook
1427 # language function.
1428 my $aggregate = 'AM';
1430 $extension = &derive_suffix ($extension, $nonansi_obj);
1431 my $lang;
1432 if ($extension_map{$extension} &&
1433 ($lang = $languages{$extension_map{$extension}}))
1434 {
1435 # Found the language, so see what it says.
1436 &saw_extension ($extension);
1438 # Note: computed subr call. The language rewrite function
1439 # should return one of the LANG_* constants. It could
1440 # also return a list whose first value is such a constant
1441 # and whose second value is a new source extension which
1442 # should be applied. This means this particular language
1443 # generates another source file which we must then process
1444 # further.
1445 my $subr = \&{'lang_' . $lang->name . '_rewrite'};
1446 my ($r, $source_extension)
1447 = &$subr ($directory, $base, $extension);
1448 # Skip this entry if we were asked not to process it.
1449 next if $r == LANG_IGNORE;
1451 # Now extract linker and other info.
1452 $linker = $lang->linker;
1454 my $this_obj_ext;
1455 if (defined $source_extension)
1456 {
1457 $this_obj_ext = $source_extension;
1458 $derived_source = 1;
1459 }
1460 elsif ($lang->ansi)
1461 {
1462 $this_obj_ext = $obj;
1463 }
1464 else
1465 {
1466 $this_obj_ext = $nonansi_obj;
1467 }
1468 $object = $base . $this_obj_ext;
1470 # Do we have per-executable flags for this executable?
1471 my $have_per_exec_flags = 0;
1472 foreach my $flag (@{$lang->flags})
1473 {
1474 if (set_seen ("${derived}_$flag"))
1475 {
1476 $have_per_exec_flags = 1;
1477 last;
1478 }
1479 }
1481 if ($have_per_exec_flags)
1482 {
1483 # We have a per-executable flag in effect for this
1484 # object. In this case we rewrite the object's
1485 # name to ensure it is unique. We also require
1486 # the `compile' program to deal with compilers
1487 # where `-c -o' does not work.
1489 # We choose the name `DERIVED_OBJECT' to ensure
1490 # (1) uniqueness, and (2) continuity between
1491 # invocations. However, this will result in a
1492 # name that is too long for losing systems, in
1493 # some situations. So we provide _SHORTNAME to
1494 # override.
1496 my $dname = $derived;
1497 my $var = var ($derived . '_SHORTNAME');
1498 if ($var)
1499 {
1500 # FIXME: should use the same Condition as
1501 # the _SOURCES variable. But this is really
1502 # silly overkill -- nobody should have
1503 # conditional shortnames.
1504 $dname = $var->variable_value;
1505 }
1506 $object = $dname . '-' . $object;
1508 require_conf_file ("$am_file.am", FOREIGN, 'compile')
1509 if $lang->name eq 'c';
1511 prog_error ($lang->name . " flags defined without compiler")
1512 if ! defined $lang->compile;
1514 $renamed = 1;
1515 }
1517 # If rewrite said it was ok, put the object into a
1518 # subdir.
1519 if ($r == LANG_SUBDIR && $directory ne '')
1520 {
1521 $object = $directory . '/' . $object;
1522 }
1524 # If doing dependency tracking, then we can't print
1525 # the rule. If we have a subdir object, we need to
1526 # generate an explicit rule. Actually, in any case
1527 # where the object is not in `.' we need a special
1528 # rule. The per-object rules in this case are
1529 # generated later, by handle_languages.
1530 if ($renamed || $directory ne '')
1531 {
1532 my $obj_sans_ext = substr ($object, 0,
1533 - length ($this_obj_ext));
1534 my $full_ansi = $full;
1535 if ($lang->ansi && option 'ansi2knr')
1536 {
1537 $full_ansi =~ s/$KNOWN_EXTENSIONS_PATTERN$/\$U$&/;
1538 $obj_sans_ext .= '$U';
1539 }
1541 my $val = ("$full_ansi $obj_sans_ext "
1542 # Only use $this_obj_ext in the derived
1543 # source case because in the other case we
1544 # *don't* want $(OBJEXT) to appear here.
1545 . ($derived_source ? $this_obj_ext : '.o'));
1547 # If we renamed the object then we want to use the
1548 # per-executable flag name. But if this is simply a
1549 # subdir build then we still want to use the AM_ flag
1550 # name.
1551 if ($renamed)
1552 {
1553 $val = "$derived $val";
1554 $aggregate = $derived;
1555 }
1556 else
1557 {
1558 $val = "AM $val";
1559 }
1561 # Each item on this list is a string consisting of
1562 # four space-separated values: the derived flag prefix
1563 # (e.g. for `foo_CFLAGS', it is `foo'), the name of the
1564 # source file, the base name of the output file, and
1565 # the extension for the object file.
1566 push (@{$lang_specific_files{$lang->name}}, $val);
1567 }
1568 }
1569 elsif ($extension eq $nonansi_obj)
1570 {
1571 # This is probably the result of a direct suffix rule.
1572 # In this case we just accept the rewrite.
1573 $object = "$base$extension";
1574 $linker = '';
1575 }
1576 else
1577 {
1578 # No error message here. Used to have one, but it was
1579 # very unpopular.
1580 # FIXME: we could potentially do more processing here,
1581 # perhaps treating the new extension as though it were a
1582 # new source extension (as above). This would require
1583 # more restructuring than is appropriate right now.
1584 next;
1585 }
1587 err_am "object `$object' created by `$full' and `$object_map{$object}'"
1588 if (defined $object_map{$object}
1589 && $object_map{$object} ne $full);
1591 my $comp_val = (($object =~ /\.lo$/)
1592 ? COMPILE_LIBTOOL : COMPILE_ORDINARY);
1593 (my $comp_obj = $object) =~ s/\.lo$/.\$(OBJEXT)/;
1594 if (defined $object_compilation_map{$comp_obj}
1595 && $object_compilation_map{$comp_obj} != 0
1596 # Only see the error once.
1597 && ($object_compilation_map{$comp_obj}
1598 != (COMPILE_LIBTOOL | COMPILE_ORDINARY))
1599 && $object_compilation_map{$comp_obj} != $comp_val)
1600 {
1601 err_am "object `$comp_obj' created both with libtool and without";
1602 }
1603 $object_compilation_map{$comp_obj} |= $comp_val;
1605 if (defined $lang)
1606 {
1607 # Let the language do some special magic if required.
1608 $lang->target_hook ($aggregate, $object, $full);
1609 }
1611 if ($derived_source)
1612 {
1613 prog_error ($lang->name . " has automatic dependency tracking")
1614 if $lang->autodep ne 'no';
1615 # Make sure this new source file is handled next. That will
1616 # make it appear to be at the right place in the list.
1617 unshift (@files, $object);
1618 # Distribute derived sources unless the source they are
1619 # derived from is not.
1620 &push_dist_common ($object)
1621 unless ($topparent =~ /^(?:nobase_)?nodist_/);
1622 next;
1623 }
1625 $linkers_used{$linker} = 1;
1627 push (@result, $object);
1629 if (! defined $object_map{$object})
1630 {
1631 my @dep_list = ();
1632 $object_map{$object} = $full;
1634 # If resulting object is in subdir, we need to make
1635 # sure the subdir exists at build time.
1636 if ($object =~ /\//)
1637 {
1638 # FIXME: check that $DIRECTORY is somewhere in the
1639 # project
1641 # For Java, the way we're handling it right now, a
1642 # `..' component doesn't make sense.
1643 if ($lang->name eq 'java' && $object =~ /(\/|^)\.\.\//)
1644 {
1645 err_am "`$full' should not contain a `..' component";
1646 }
1648 # Make sure object is removed by `make mostlyclean'.
1649 $compile_clean_files{$object} = MOSTLY_CLEAN;
1650 # If we have a libtool object then we also must remove
1651 # the ordinary .o.
1652 if ($object =~ /\.lo$/)
1653 {
1654 (my $xobj = $object) =~ s,lo$,\$(OBJEXT),;
1655 $compile_clean_files{$xobj} = MOSTLY_CLEAN;
1657 # Remove any libtool object in this directory.
1658 $libtool_clean_directories{$directory} = 1;
1659 }
1661 push (@dep_list, require_build_directory ($directory));
1663 # If we're generating dependencies, we also want
1664 # to make sure that the appropriate subdir of the
1665 # .deps directory is created.
1666 push (@dep_list,
1667 require_build_directory ($directory . '/$(DEPDIR)'))
1668 unless option 'no-dependencies';
1669 }
1671 &pretty_print_rule ($object . ':', "\t", @dep_list)
1672 if scalar @dep_list > 0;
1673 }
1675 # Transform .o or $o file into .P file (for automatic
1676 # dependency code).
1677 if ($lang && $lang->autodep ne 'no')
1678 {
1679 my $depfile = $object;
1680 $depfile =~ s/\.([^.]*)$/.P$1/;
1681 $depfile =~ s/\$\(OBJEXT\)$/o/;
1682 $dep_files{dirname ($depfile) . '/$(DEPDIR)/'
1683 . basename ($depfile)} = 1;
1684 }
1685 }
1687 return @result;
1688 }
1691 # $LINKER
1692 # define_objects_from_sources ($VAR, $OBJVAR, $NODEFINE, $ONE_FILE,
1693 # $OBJ, $PARENT, $TOPPARENT, $WHERE)
1694 # ---------------------------------------------------------------------
1695 # Define an _OBJECTS variable for a _SOURCES variable (or subvariable)
1696 #
1697 # Arguments are:
1698 # $VAR is the name of the _SOURCES variable
1699 # $OBJVAR is the name of the _OBJECTS variable if known (otherwise
1700 # it will be generated and returned).
1701 # $NODEFINE is a boolean: if true, $OBJVAR will not be defined (but
1702 # work done to determine the linker will be).
1703 # $ONE_FILE is the canonical (transformed) name of object to build
1704 # $OBJ is the object extension (i.e. either `.o' or `.lo').
1705 # $TOPPARENT is the _SOURCES variable being processed.
1706 # $WHERE context into which this definition is done
1707 #
1708 # Result is a pair ($LINKER, $OBJVAR):
1709 # $LINKER is a boolean, true if a linker is needed to deal with the objects
1710 sub define_objects_from_sources ($$$$$$$)
1711 {
1712 my ($var, $objvar, $nodefine, $one_file, $obj, $topparent, $where) = @_;
1714 my $needlinker = "";
1716 transform_variable_recursively
1717 ($var, $objvar, 'am__objects', $nodefine, $where,
1718 # The transform code to run on each filename.
1719 sub {
1720 my ($subvar, $val, $cond, $full_cond) = @_;
1721 my @trans = &handle_single_transform_list ($subvar, $topparent,
1722 $one_file, $obj, $val);
1723 $needlinker = "true" if @trans;
1724 return @trans;
1725 });
1727 return $needlinker;
1728 }
1731 # Handle SOURCE->OBJECT transform for one program or library.
1732 # Arguments are:
1733 # canonical (transformed) name of object to build
1734 # actual name of object to build
1735 # object extension (i.e. either `.o' or `$o'.
1736 # Return result is name of linker variable that must be used.
1737 # Empty return means just use `LINK'.
1738 sub handle_source_transform
1739 {
1740 # one_file is canonical name. unxformed is given name. obj is
1741 # object extension.
1742 my ($one_file, $unxformed, $obj, $where) = @_;
1744 my ($linker) = '';
1746 # No point in continuing if _OBJECTS is defined.
1747 return if reject_var ($one_file . '_OBJECTS',
1748 $one_file . '_OBJECTS should not be defined');
1750 my %used_pfx = ();
1751 my $needlinker;
1752 %linkers_used = ();
1753 foreach my $prefix ('', 'EXTRA_', 'dist_', 'nodist_',
1754 'dist_EXTRA_', 'nodist_EXTRA_')
1755 {
1756 my $varname = $prefix . $one_file . "_SOURCES";
1757 my $var = var $varname;
1758 next unless $var;
1760 # We are going to define _OBJECTS variables using the prefix.
1761 # Then we glom them all together. So we can't use the null
1762 # prefix here as we need it later.
1763 my $xpfx = ($prefix eq '') ? 'am_' : $prefix;
1765 # Keep track of which prefixes we saw.
1766 $used_pfx{$xpfx} = 1
1767 unless $prefix =~ /EXTRA_/;
1769 push @sources, "\$($varname)";
1770 if ($prefix !~ /^nodist_/)
1771 {
1772 # If the VAR wasn't definined conditionally, we add
1773 # it to DIST_SOURCES as is. Otherwise we create a
1774 # am__VAR_DIST variable which contains all possible values,
1775 # and add this variable to DIST_SOURCES.
1776 my $distvar = $varname;
1777 if ($var->has_conditional_contents)
1778 {
1779 $distvar = "am__${varname}_DIST";
1780 my @files =
1781 uniq ($var->value_as_list_recursive ('all'));
1782 define_pretty_variable ($distvar, TRUE, $where, @files);
1783 }
1784 push @dist_sources, "\$($distvar)"
1785 }
1787 $needlinker |=
1788 define_objects_from_sources ($varname,
1789 $xpfx . $one_file . '_OBJECTS',
1790 $prefix =~ /EXTRA_/,
1791 $one_file, $obj, $varname, $where);
1792 }
1793 if ($needlinker)
1794 {
1795 $linker ||= &resolve_linker (%linkers_used);
1796 }
1798 my @keys = sort keys %used_pfx;
1799 if (scalar @keys == 0)
1800 {
1801 &define_variable ($one_file . "_SOURCES", $unxformed . ".c", $where);
1802 push (@sources, $unxformed . '.c');
1803 push (@dist_sources, $unxformed . '.c');
1805 %linkers_used = ();
1806 my (@result) =
1807 &handle_single_transform_list ($one_file . '_SOURCES',
1808 $one_file . '_SOURCES',
1809 $one_file, $obj,
1810 "$unxformed.c");
1811 $linker ||= &resolve_linker (%linkers_used);
1812 define_pretty_variable ($one_file . '_OBJECTS', TRUE, $where, @result);
1813 }
1814 else
1815 {
1816 @keys = map { '$(' . $_ . $one_file . '_OBJECTS)' } @keys;
1817 define_pretty_variable ($one_file . '_OBJECTS', TRUE, $where, @keys);
1818 }
1820 # If we want to use `LINK' we must make sure it is defined.
1821 if ($linker eq '')
1822 {
1823 $need_link = 1;
1824 }
1826 return $linker;
1827 }
1830 # handle_lib_objects ($XNAME, $VAR)
1831 # ---------------------------------
1832 # Special-case ALLOCA and LIBOBJS substitutions in _LDADD or _LIBADD variables.
1833 # Also, generate _DEPENDENCIES variable if appropriate.
1834 # Arguments are:
1835 # transformed name of object being built, or empty string if no object
1836 # name of _LDADD/_LIBADD-type variable to examine
1837 # Returns 1 if LIBOBJS seen, 0 otherwise.
1838 sub handle_lib_objects
1839 {
1840 my ($xname, $varname) = @_;
1842 my $var = var ($varname);
1843 prog_error "handle_lib_objects: `$varname' undefined"
1844 unless $var;
1845 prog_error "handle_lib_objects: unexpected variable name `$varname'"
1846 unless $varname =~ /^(.*)(?:LIB|LD)ADD$/;
1847 my $prefix = $1 || 'AM_';
1849 my $seen_libobjs = 0;
1850 my $flagvar = 0;
1852 transform_variable_recursively
1853 ($varname, $xname . '_DEPENDENCIES', 'am__DEPENDENCIES',
1854 ! $xname, INTERNAL,
1855 # Transformation function, run on each filename.
1856 sub {
1857 my ($subvar, $val, $cond, $full_cond) = @_;
1859 if ($val =~ /^-/)
1860 {
1861 # Skip -lfoo and -Ldir silently; these are explicitly allowed.
1862 if ($val !~ /^-[lL]/ &&
1863 # Skip -dlopen and -dlpreopen; these are explicitly allowed
1864 # for Libtool libraries or programs. (Actually we are a bit
1865 # laxest here since this code also applies to non-libtool
1866 # libraries or programs, for which -dlopen and -dlopreopen
1867 # are pure non-sence. Diagnosting this doesn't seems very
1868 # important: the developer will quickly get complaints from
1869 # the linker.)
1870 $val !~ /^-dl(?:pre)?open$/ &&
1871 # Only get this error once.
1872 ! $flagvar)
1873 {
1874 $flagvar = 1;
1875 # FIXME: should display a stack of nested variables
1876 # as context when $var != $subvar.
1877 err_var ($var, "linker flags such as `$val' belong in "
1878 . "`${prefix}LDFLAGS");
1879 }
1880 return ();
1881 }
1882 elsif ($val !~ /^\@.*\@$/)
1883 {
1884 # Assume we have a file of some sort, and output it into the
1885 # dependency variable. Autoconf substitutions are not output;
1886 # rarely is a new dependency substituted into e.g. foo_LDADD
1887 # -- but bad things (e.g. -lX11) are routinely substituted.
1888 # Note that LIBOBJS and ALLOCA are exceptions to this rule,
1889 # and handled specially below.
1890 return $val;
1891 }
1892 elsif ($val =~ /^\@(LT)?LIBOBJS\@$/)
1893 {
1894 handle_LIBOBJS ($subvar, $full_cond, $1);
1895 $seen_libobjs = 1;
1896 return $val;
1897 }
1898 elsif ($val =~ /^\@(LT)?ALLOCA\@$/)
1899 {
1900 handle_ALLOCA ($subvar, $full_cond, $1);
1901 return $val;
1902 }
1903 else
1904 {
1905 return ();
1906 }
1907 });
1909 return $seen_libobjs;
1910 }
1912 sub handle_LIBOBJS ($$$)
1913 {
1914 my ($var, $cond, $lt) = @_;
1915 $lt ||= '';
1916 my $myobjext = ($1 ? 'l' : '') . 'o';
1918 $var->requires_variables ("\@${lt}LIBOBJS\@ used", $lt . 'LIBOBJS')
1919 if ! keys %libsources;
1921 foreach my $iter (keys %libsources)
1922 {
1923 if ($iter =~ /\.[cly]$/)
1924 {
1925 &saw_extension ($&);
1926 &saw_extension ('.c');
1927 }
1929 if ($iter =~ /\.h$/)
1930 {
1931 require_file_with_macro ($cond, $var, FOREIGN, $iter);
1932 }
1933 elsif ($iter ne 'alloca.c')
1934 {
1935 my $rewrite = $iter;
1936 $rewrite =~ s/\.c$/.P$myobjext/;
1937 $dep_files{'$(DEPDIR)/' . $rewrite} = 1;
1938 $rewrite = "^" . quotemeta ($iter) . "\$";
1939 # Only require the file if it is not a built source.
1940 my $bs = var ('BUILT_SOURCES');
1941 if (! $bs
1942 || ! grep (/$rewrite/, $bs->value_as_list_recursive ('all')))
1943 {
1944 require_file_with_macro ($cond, $var, FOREIGN, $iter);
1945 }
1946 }
1947 }
1948 }
1950 sub handle_ALLOCA ($$$)
1951 {
1952 my ($var, $cond, $lt) = @_;
1953 my $myobjext = ($lt ? 'l' : '') . 'o';
1954 $lt ||= '';
1955 $var->requires_variables ("\@${lt}ALLOCA\@ used", $lt . 'ALLOCA');
1956 $dep_files{'$(DEPDIR)/alloca.P' . $myobjext} = 1;
1957 require_file_with_macro ($cond, $var, FOREIGN, 'alloca.c');
1958 &saw_extension ('c');
1959 }
1961 # Canonicalize the input parameter
1962 sub canonicalize
1963 {
1964 my ($string) = @_;
1965 $string =~ tr/A-Za-z0-9_\@/_/c;
1966 return $string;
1967 }
1969 # Canonicalize a name, and check to make sure the non-canonical name
1970 # is never used. Returns canonical name. Arguments are name and a
1971 # list of suffixes to check for.
1972 sub check_canonical_spelling
1973 {
1974 my ($name, @suffixes) = @_;
1976 my $xname = &canonicalize ($name);
1977 if ($xname ne $name)
1978 {
1979 foreach my $xt (@suffixes)
1980 {
1981 reject_var ("$name$xt", "use `$xname$xt', not `$name$xt'");
1982 }
1983 }
1985 return $xname;
1986 }
1989 # handle_compile ()
1990 # -----------------
1991 # Set up the compile suite.
1992 sub handle_compile ()
1993 {
1994 return
1995 unless $get_object_extension_was_run;
1997 # Boilerplate.
1998 my $default_includes = '';
1999 if (! option 'nostdinc')
2000 {
2001 $default_includes = ' -I. -I$(srcdir)';
2003 my $var = var 'CONFIG_HEADER';
2004 if ($var)
2005 {
2006 foreach my $hdr (split (' ', $var->variable_value))
2007 {
2008 $default_includes .= ' -I' . dirname ($hdr);
2009 }
2010 }
2011 }
2013 my (@mostly_rms, @dist_rms);
2014 foreach my $item (sort keys %compile_clean_files)
2015 {
2016 if ($compile_clean_files{$item} == MOSTLY_CLEAN)
2017 {
2018 push (@mostly_rms, "\t-rm -f $item");
2019 }
2020 elsif ($compile_clean_files{$item} == DIST_CLEAN)
2021 {
2022 push (@dist_rms, "\t-rm -f $item");
2023 }
2024 else
2025 {
2026 prog_error 'invalid entry in %compile_clean_files';
2027 }
2028 }
2030 my ($coms, $vars, $rules) =
2031 &file_contents_internal (1, "$libdir/am/compile.am",
2032 new Automake::Location,
2033 ('DEFAULT_INCLUDES' => $default_includes,
2034 'MOSTLYRMS' => join ("\n", @mostly_rms),
2035 'DISTRMS' => join ("\n", @dist_rms)));
2036 $output_vars .= $vars;
2037 $output_rules .= "$coms$rules";
2039 # Check for automatic de-ANSI-fication.
2040 if (option 'ansi2knr')
2041 {
2042 my ($ansi2knr_filename, $ansi2knr_where) = @{option 'ansi2knr'};
2043 my $ansi2knr_dir = '';
2045 require_variables ($ansi2knr_where, "option `ansi2knr' is used",
2046 TRUE, "ANSI2KNR", "U");
2048 # topdir is where ansi2knr should be.
2049 if ($ansi2knr_filename eq 'ansi2knr')
2050 {
2051 # Only require ansi2knr files if they should appear in
2052 # this directory.
2053 require_file ($ansi2knr_where, FOREIGN,
2054 'ansi2knr.c', 'ansi2knr.1');
2056 # ansi2knr needs to be built before subdirs, so unshift it.
2057 unshift (@all, '$(ANSI2KNR)');
2058 }
2059 else
2060 {
2061 $ansi2knr_dir = dirname ($ansi2knr_filename);
2062 }
2064 $output_rules .= &file_contents ('ansi2knr',
2065 new Automake::Location,
2066 'ANSI2KNR-DIR' => $ansi2knr_dir);
2068 }
2069 }
2071 # handle_libtool ()
2072 # -----------------
2073 # Handle libtool rules.
2074 sub handle_libtool
2075 {
2076 return unless var ('LIBTOOL');
2078 # Libtool requires some files, but only at top level.
2079 require_conf_file_with_macro (TRUE, 'LIBTOOL', FOREIGN, @libtool_files)
2080 if $relative_dir eq '.';
2082 my @libtool_rms;
2083 foreach my $item (sort keys %libtool_clean_directories)
2084 {
2085 my $dir = ($item eq '.') ? '' : "$item/";
2086 # .libs is for Unix, _libs for DOS.
2087 push (@libtool_rms, "\t-rm -rf ${dir}.libs ${dir}_libs");
2088 }
2090 # Output the libtool compilation rules.
2091 $output_rules .= &file_contents ('libtool',
2092 new Automake::Location,
2093 LTRMS => join ("\n", @libtool_rms));
2094 }
2096 # handle_programs ()
2097 # ------------------
2098 # Handle C programs.
2099 sub handle_programs
2100 {
2101 my @proglist = &am_install_var ('progs', 'PROGRAMS',
2102 'bin', 'sbin', 'libexec', 'pkglib',
2103 'noinst', 'check');
2104 return if ! @proglist;
2106 my $seen_global_libobjs =
2107 var ('LDADD') && &handle_lib_objects ('', 'LDADD');
2109 foreach my $pair (@proglist)
2110 {
2111 my ($where, $one_file) = @$pair;
2113 my $seen_libobjs = 0;
2114 my $obj = &get_object_extension ($one_file);
2116 # Strip any $(EXEEXT) suffix the user might have added, or this
2117 # will confuse &handle_source_transform and &check_canonical_spelling.
2118 # We'll add $(EXEEXT) back later anyway.
2119 $one_file =~ s/\$\(EXEEXT\)$//;
2121 # Canonicalize names and check for misspellings.
2122 my $xname = &check_canonical_spelling ($one_file, '_LDADD', '_LDFLAGS',
2123 '_SOURCES', '_OBJECTS',
2124 '_DEPENDENCIES');
2126 $where->push_context ("while processing program `$one_file'");
2127 $where->set (INTERNAL->get);
2129 my $linker = &handle_source_transform ($xname, $one_file, $obj, $where);
2131 if (var ($xname . "_LDADD"))
2132 {
2133 $seen_libobjs = &handle_lib_objects ($xname, $xname . '_LDADD');
2134 }
2135 else
2136 {
2137 # User didn't define prog_LDADD override. So do it.
2138 &define_variable ($xname . '_LDADD', '$(LDADD)', $where);
2140 # This does a bit too much work. But we need it to
2141 # generate _DEPENDENCIES when appropriate.
2142 if (var ('LDADD'))
2143 {
2144 $seen_libobjs = &handle_lib_objects ($xname, 'LDADD');
2145 }
2146 }
2148 reject_var ($xname . '_LIBADD',
2149 "use `${xname}_LDADD', not `${xname}_LIBADD'");
2151 set_seen ($xname . '_DEPENDENCIES');
2152 set_seen ($xname . '_LDFLAGS');
2154 # Determine program to use for link.
2155 my $xlink;
2156 if (var ($xname . '_LINK'))
2157 {
2158 $xlink = $xname . '_LINK';
2159 }
2160 else
2161 {
2162 $xlink = $linker ? $linker : 'LINK';
2163 }
2165 # If the resulting program lies into a subdirectory,
2166 # make sure this directory will exist.
2167 my $dirstamp = require_build_directory_maybe ($one_file);
2169 $output_rules .= &file_contents ('program',
2170 $where,
2171 PROGRAM => $one_file,
2172 XPROGRAM => $xname,
2173 XLINK => $xlink,
2174 DIRSTAMP => $dirstamp,
2175 EXEEXT => '$(EXEEXT)');
2177 if ($seen_libobjs || $seen_global_libobjs)
2178 {
2179 if (var ($xname . '_LDADD'))
2180 {
2181 &check_libobjs_sources ($xname, $xname . '_LDADD');
2182 }
2183 elsif (var ('LDADD'))
2184 {
2185 &check_libobjs_sources ($xname, 'LDADD');
2186 }
2187 }
2188 }
2189 }
2192 # handle_libraries ()
2193 # -------------------
2194 # Handle libraries.
2195 sub handle_libraries
2196 {
2197 my @liblist = &am_install_var ('libs', 'LIBRARIES',
2198 'lib', 'pkglib', 'noinst', 'check');
2199 return if ! @liblist;
2201 my @prefix = am_primary_prefixes ('LIBRARIES', 0, 'lib', 'pkglib',
2202 'noinst', 'check');
2204 if (@prefix)
2205 {
2206 my $var = rvar ($prefix[0] . '_LIBRARIES');
2207 $var->requires_variables ('library used', 'RANLIB');
2208 }
2210 foreach my $pair (@liblist)
2211 {
2212 my ($where, $onelib) = @$pair;
2214 my $seen_libobjs = 0;
2215 # Check that the library fits the standard naming convention.
2216 if (basename ($onelib) !~ /^lib.*\.a/)
2217 {
2218 error $where, "`$onelib' is not a standard library name";
2219 }
2221 $where->push_context ("while processing library `$onelib'");
2222 $where->set (INTERNAL->get);
2224 my $obj = &get_object_extension ($onelib);
2226 # Canonicalize names and check for misspellings.
2227 my $xlib = &check_canonical_spelling ($onelib, '_LIBADD', '_SOURCES',
2228 '_OBJECTS', '_DEPENDENCIES',
2229 '_AR');
2231 if (! var ($xlib . '_AR'))
2232 {
2233 &define_variable ($xlib . '_AR', '$(AR) $(ARFLAGS)', $where);
2234 }
2236 # Generate support for conditional object inclusion in
2237 # libraries.
2238 if (var ($xlib . '_LIBADD'))
2239 {
2240 if (&handle_lib_objects ($xlib, $xlib . '_LIBADD'))
2241 {
2242 $seen_libobjs = 1;
2243 }
2244 }
2245 else
2246 {
2247 &define_variable ($xlib . "_LIBADD", '', $where);
2248 }
2250 reject_var ($xlib . '_LDADD',
2251 "use `${xlib}_LIBADD', not `${xlib}_LDADD'");
2253 # Make sure we at look at this.
2254 set_seen ($xlib . '_DEPENDENCIES');
2256 &handle_source_transform ($xlib, $onelib, $obj, $where);
2258 # If the resulting library lies into a subdirectory,
2259 # make sure this directory will exist.
2260 my $dirstamp = require_build_directory_maybe ($onelib);
2262 $output_rules .= &file_contents ('library',
2263 $where,
2264 LIBRARY => $onelib,
2265 XLIBRARY => $xlib,
2266 DIRSTAMP => $dirstamp);
2268 if ($seen_libobjs)
2269 {
2270 if (var ($xlib . '_LIBADD'))
2271 {
2272 &check_libobjs_sources ($xlib, $xlib . '_LIBADD');
2273 }
2274 }
2275 }
2276 }
2279 # handle_ltlibraries ()
2280 # ---------------------
2281 # Handle shared libraries.
2282 sub handle_ltlibraries
2283 {
2284 my @liblist = &am_install_var ('ltlib', 'LTLIBRARIES',
2285 'noinst', 'lib', 'pkglib', 'check');
2286 return if ! @liblist;
2288 my %instdirs;
2289 my @prefix = am_primary_prefixes ('LTLIBRARIES', 0, 'lib', 'pkglib',
2290 'noinst', 'check');
2292 if (@prefix)
2293 {
2294 my $var = rvar ($prefix[0] . '_LTLIBRARIES');
2295 $var->requires_variables ('Libtool library used', 'LIBTOOL');
2296 }
2298 my %liblocations = (); # Location (in Makefile.am) of each library.
2300 foreach my $key (@prefix)
2301 {
2302 # Get the installation directory of each library.
2303 (my $dir = $key) =~ s/^nobase_//;
2304 my $var = rvar ($key . '_LTLIBRARIES');
2305 for my $pair ($var->loc_and_value_as_list_recursive ('all'))
2306 {
2307 my ($where, $lib) = @$pair;
2308 # We reject libraries which are installed in several places,
2309 # because we don't handle this in the rules (think `-rpath').
2310 #
2311 # However, we allow the same library to be listed many times
2312 # for the same directory. This is for users who need setups
2313 # like
2314 # if COND1
2315 # lib_LTLIBRARIES = libfoo.la
2316 # endif
2317 # if COND2
2318 # lib_LTLIBRARIES = libfoo.la
2319 # endif
2320 #
2321 # Actually this will also allow
2322 # lib_LTLIBRARIES = libfoo.la libfoo.la
2323 # Diagnosing this case doesn't seem worth the plain (we'd
2324 # have to fill $instdirs on a per-condition basis, check
2325 # implied conditions, etc.)
2326 if (defined $instdirs{$lib} && $instdirs{$lib} ne $dir)
2327 {
2328 error ($where, "`$lib' is already going to be installed in "
2329 . "`$instdirs{$lib}'", partial => 1);
2330 error ($liblocations{$lib}, "`$lib' previously declared here");
2331 }
2332 else
2333 {
2334 $instdirs{$lib} = $dir;
2335 $liblocations{$lib} = $where->clone;
2336 }
2337 }
2338 }
2340 foreach my $pair (@liblist)
2341 {
2342 my ($where, $onelib) = @$pair;
2344 my $seen_libobjs = 0;
2345 my $obj = &get_object_extension ($onelib);
2347 # Canonicalize names and check for misspellings.
2348 my $xlib = &check_canonical_spelling ($onelib, '_LIBADD', '_LDFLAGS',
2349 '_SOURCES', '_OBJECTS',
2350 '_DEPENDENCIES');
2352 # Check that the library fits the standard naming convention.
2353 my $libname_rx = "^lib.*\.la";
2354 my $ldvar = var ("${xlib}_LDFLAGS") || var ('LDFLAGS');
2355 if ($ldvar && grep (/-module/, $ldvar->value_as_list_recursive ('all')))
2356 {
2357 # Relax name checking for libtool modules.
2358 $libname_rx = "\.la";
2359 }
2360 if (basename ($onelib) !~ /$libname_rx$/)
2361 {
2362 msg ('error-gnu/warn', $where,
2363 "`$onelib' is not a standard libtool library name");
2364 }
2366 $where->push_context ("while processing Libtool library `$onelib'");
2367 $where->set (INTERNAL->get);
2369 # Make sure we at look at these.
2370 set_seen ($xlib . '_LDFLAGS');
2371 set_seen ($xlib . '_DEPENDENCIES');
2373 # Generate support for conditional object inclusion in
2374 # libraries.
2375 if (var ($xlib . '_LIBADD'))
2376 {
2377 if (&handle_lib_objects ($xlib, $xlib . '_LIBADD'))
2378 {
2379 $seen_libobjs = 1;
2380 }
2381 }
2382 else
2383 {
2384 &define_variable ($xlib . "_LIBADD", '', $where);
2385 }
2387 reject_var ("${xlib}_LDADD",
2388 "use `${xlib}_LIBADD', not `${xlib}_LDADD'");
2391 my $linker = &handle_source_transform ($xlib, $onelib, $obj, $where);
2393 # Determine program to use for link.
2394 my $xlink;
2395 if (var ($xlib . '_LINK'))
2396 {
2397 $xlink = $xlib . '_LINK';
2398 }
2399 else
2400 {
2401 $xlink = $linker ? $linker : 'LINK';
2402 }
2404 my $rpath;
2405 if ($instdirs{$onelib} eq 'EXTRA'
2406 || $instdirs{$onelib} eq 'noinst'
2407 || $instdirs{$onelib} eq 'check')
2408 {
2409 # It's an EXTRA_ library, so we can't specify -rpath,
2410 # because we don't know where the library will end up.
2411 # The user probably knows, but generally speaking automake
2412 # doesn't -- and in fact configure could decide
2413 # dynamically between two different locations.
2414 $rpath = '';
2415 }
2416 else
2417 {
2418 $rpath = ('-rpath $(' . $instdirs{$onelib} . 'dir)');
2419 }
2421 # If the resulting library lies into a subdirectory,
2422 # make sure this directory will exist.
2423 my $dirstamp = require_build_directory_maybe ($onelib);
2425 # Remember to cleanup .libs/ in this directory.
2426 my $dirname = dirname $onelib;
2427 $libtool_clean_directories{$dirname} = 1;
2429 $output_rules .= &file_contents ('ltlibrary',
2430 $where,
2431 LTLIBRARY => $onelib,
2432 XLTLIBRARY => $xlib,
2433 RPATH => $rpath,
2434 XLINK => $xlink,
2435 DIRSTAMP => $dirstamp);
2436 if ($seen_libobjs)
2437 {
2438 if (var ($xlib . '_LIBADD'))
2439 {
2440 &check_libobjs_sources ($xlib, $xlib . '_LIBADD');
2441 }
2442 }
2443 }
2444 }
2446 # See if any _SOURCES variable were misspelled.
2447 sub check_typos ()
2448 {
2449 # It is ok if the user sets this particular variable.
2450 set_seen 'AM_LDFLAGS';
2452 foreach my $var (variables)
2453 {
2454 my $varname = $var->name;
2455 # A configure variable is always legitimate.
2456 next if exists $configure_vars{$varname};
2458 my $check = 0;
2459 foreach my $primary ('_SOURCES', '_LIBADD', '_LDADD', '_LDFLAGS',
2460 '_DEPENDENCIES')
2461 {
2462 if ($varname =~ /$primary$/)
2463 {
2464 $check = 1;
2465 last;
2466 }
2467 }
2468 next unless $check;
2470 for my $cond ($var->conditions->conds)
2471 {
2472 msg_var 'syntax', $var, "unused variable: `$varname'"
2473 unless $var->rdef ($cond)->seen;
2474 }
2475 }
2476 }
2479 # Handle scripts.
2480 sub handle_scripts
2481 {
2482 # NOTE we no longer automatically clean SCRIPTS, because it is
2483 # useful to sometimes distribute scripts verbatim. This happens
2484 # e.g. in Automake itself.
2485 &am_install_var ('-candist', 'scripts', 'SCRIPTS',
2486 'bin', 'sbin', 'libexec', 'pkgdata',
2487 'noinst', 'check');
2488 }
2493 ## ------------------------ ##
2494 ## Handling Texinfo files. ##
2495 ## ------------------------ ##
2497 # ($OUTFILE, $VFILE, @CLEAN_FILES)
2498 # &scan_texinfo_file ($FILENAME)
2499 # ------------------------------
2500 # $OUTFILE - name of the info file produced by $FILENAME.
2501 # $VFILE - name of the version.texi file used (undef if none).
2502 # @CLEAN_FILES - list of byproducts (indexes etc.)
2503 sub scan_texinfo_file ($)
2504 {
2505 my ($filename) = @_;
2507 # Some of the following extensions are always created, no matter
2508 # whether indexes are used or not. Other (like cps, fns, ... pgs)
2509 # are only created when they are used. We used to scan $FILENAME
2510 # for their use, but that is not enough: they could be used in
2511 # included files. We can't scan included files because we don't
2512 # know the include path. Therefore we always erase these files, no
2513 # matter whether they are used or not.
2514 #
2515 # (tmp is only created if an @macro is used and a certain e-TeX
2516 # feature is not available.)
2517 my %clean_suffixes =
2518 map { $_ => 1 } (qw(aux log toc tmp
2519 cp cps
2520 fn fns
2521 ky kys
2522 vr vrs
2523 tp tps
2524 pg pgs)); # grep 'new.*index' texinfo.tex
2526 my $texi = new Automake::XFile "< $filename";
2527 verb "reading $filename";
2529 my ($outfile, $vfile);
2530 while ($_ = $texi->getline)
2531 {
2532 if (/^\@setfilename +(\S+)/)
2533 {
2534 # Honor only the first @setfilename. (It's possible to have
2535 # more occurences later if the manual shows examples of how
2536 # to use @setfilename...)
2537 next if $outfile;
2539 $outfile = $1;
2540 if ($outfile =~ /\.(.+)$/ && $1 ne 'info')
2541 {
2542 error ("$filename:$.",
2543 "output `$outfile' has unrecognized extension");
2544 return;
2545 }
2546 }
2547 # A "version.texi" file is actually any file whose name matches
2548 # "vers*.texi".
2549 elsif (/^\@include\s+(vers[^.]*\.texi)\s*$/)
2550 {
2551 $vfile = $1;
2552 }
2554 # Try to find new or unused indexes.
2556 # Creating a new category of index.
2557 elsif (/^\@def(code)?index (\w+)/)
2558 {
2559 $clean_suffixes{$2} = 1;
2560 $clean_suffixes{"$2s"} = 1;
2561 }
2563 # Merging an index into an another.
2564 elsif (/^\@syn(code)?index (\w+) (\w+)/)
2565 {
2566 delete $clean_suffixes{"$2s"};
2567 $clean_suffixes{"$3s"} = 1;
2568 }
2570 }
2572 if ($outfile eq '')
2573 {
2574 err_am "`$filename' missing \@setfilename";
2575 return;
2576 }
2578 my $infobase = basename ($filename);
2579 $infobase =~ s/\.te?xi(nfo)?$//;
2580 return ($outfile, $vfile,
2581 map { "$infobase.$_" } (sort keys %clean_suffixes));
2582 }
2585 # ($DIRSTAMP, @CLEAN_FILES)
2586 # output_texinfo_build_rules ($SOURCE, $DEST, @DEPENDENCIES)
2587 # ----------------------------------------------------------
2588 # SOURCE - the source Texinfo file
2589 # DEST - the destination Info file
2590 # DEPENDENCIES - known dependencies
2591 sub output_texinfo_build_rules ($$@)
2592 {
2593 my ($source, $dest, @deps) = @_;
2595 # Split `a.texi' into `a' and `.texi'.
2596 my ($spfx, $ssfx) = ($source =~ /^(.*?)(\.[^.]*)?$/);
2597 my ($dpfx, $dsfx) = ($dest =~ /^(.*?)(\.[^.]*)?$/);
2599 $ssfx ||= "";
2600 $dsfx ||= "";
2602 # We can output two kinds of rules: the "generic" rules use Make
2603 # suffix rules and are appropritate when $source and $dest lie in
2604 # the current directory; the "specifix" rules is needed in the other
2605 # case.
2606 #
2607 # The former are output only once (this is not really apparent here,
2608 # but just remember that some logic deeper in Automake will not
2609 # output the same rule twice); while the later need to be output for
2610 # each Texinfo source.
2611 my $generic;
2612 my $makeinfoflags;
2613 my $sdir = dirname $source;
2614 if ($sdir eq '.' && dirname ($dest) eq '.')
2615 {
2616 $generic = 1;
2617 $makeinfoflags = '-I $(srcdir)';
2618 }
2619 else
2620 {
2621 $generic = 0;
2622 $makeinfoflags = "-I $sdir -I \$(srcdir)/$sdir";
2623 }
2625 # We cannot use a suffix rule to build info files with an empty
2626 # extension. Otherwise we would output a single suffix inference
2627 # rule, with separate dependencies, as in
2628 #
2629 # .texi:
2630 # $(MAKEINFO) ...
2631 # foo.info: foo.texi
2632 #
2633 # which confuse Solaris make. (See the Autoconf manual for
2634 # details.) Therefore we use a specific rule in this case. This
2635 # applies to info files only (dvi and pdf files always have an
2636 # extension).
2637 my $generic_info = ($generic && $dsfx) ? 1 : 0;
2639 # If the resulting file lie into a subdirectory,
2640 # make sure this directory will exist.
2641 my $dirstamp = require_build_directory_maybe ($dest);
2643 $output_rules .= file_contents ('texibuild',
2644 new Automake::Location,
2645 GENERIC => $generic,
2646 GENERIC_INFO => $generic_info,
2647 SOURCE_SUFFIX => $ssfx,
2648 SOURCE => ($generic ? '$<' : $source),
2649 SOURCE_INFO => ($generic_info ?
2650 '$<' : $source),
2651 SOURCE_REAL => $source,
2652 DEST_PREFIX => $dpfx,
2653 DEST_SUFFIX => $dsfx,
2654 MAKEINFOFLAGS => $makeinfoflags,
2655 DEPS => "@deps",
2656 DIRSTAMP => $dirstamp);
2657 return ($dirstamp, "$dpfx.dvi", "$dpfx.pdf", "$dpfx.ps", "$dpfx.html");
2658 }
2661 # $TEXICLEANS
2662 # handle_texinfo_helper ($info_texinfos)
2663 # --------------------------------------
2664 # Handle all Texinfo source; helper for handle_texinfo.
2665 sub handle_texinfo_helper ($)
2666 {
2667 my ($info_texinfos) = @_;
2668 my (@infobase, @info_deps_list, @texi_deps);
2669 my %versions;
2670 my $done = 0;
2671 my @texi_cleans;
2673 foreach my $texi ($info_texinfos->value_as_list_recursive ('all'))
2674 {
2675 my $infobase = $texi;
2676 $infobase =~ s/\.(txi|texinfo|texi)$//;
2678 if ($infobase eq $texi)
2679 {
2680 # FIXME: report line number.
2681 err_am "texinfo file `$texi' has unrecognized extension";
2682 next;
2683 }
2685 push @infobase, $infobase;
2687 # If 'version.texi' is referenced by input file, then include
2688 # automatic versioning capability.
2689 my ($out_file, $vtexi, @clean_files) =
2690 scan_texinfo_file ("$relative_dir/$texi")
2691 or next;
2692 push (@texi_cleans, @clean_files);
2694 # If the Texinfo source is in a subdirectory, create the
2695 # resulting info in this subdirectory. If it is in the current
2696 # directory, try hard to not prefix "./" because it breaks the
2697 # generic rules.
2698 my $outdir = dirname ($texi) . '/';
2699 $outdir = "" if $outdir eq './';
2700 $out_file = $outdir . $out_file;
2702 # If user specified file_TEXINFOS, then use that as explicit
2703 # dependency list.
2704 @texi_deps = ();
2705 push (@texi_deps, "$outdir$vtexi") if $vtexi;
2707 my $canonical = canonicalize ($infobase);
2708 if (var ($canonical . "_TEXINFOS"))
2709 {
2710 push (@texi_deps, '$(' . $canonical . '_TEXINFOS)');
2711 push_dist_common ('$(' . $canonical . '_TEXINFOS)');
2712 }
2714 my ($dirstamp, @cfiles) =
2715 output_texinfo_build_rules ($texi, $out_file, @texi_deps);
2716 push (@texi_cleans, @cfiles);
2718 push (@info_deps_list, $out_file);
2720 # If a vers*.texi file is needed, emit the rule.
2721 if ($vtexi)
2722 {
2723 err_am ("`$vtexi', included in `$texi', "
2724 . "also included in `$versions{$vtexi}'")
2725 if defined $versions{$vtexi};
2726 $versions{$vtexi} = $texi;
2728 # We number the stamp-vti files. This is doable since the
2729 # actual names don't matter much. We only number starting
2730 # with the second one, so that the common case looks nice.
2731 my $vti = ($done ? $done : 'vti');
2732 ++$done;
2734 # This is ugly, but it is our historical practice.
2735 if ($config_aux_dir_set_in_configure_in)
2736 {
2737 require_conf_file_with_macro (TRUE, 'info_TEXINFOS', FOREIGN,
2738 'mdate-sh');
2739 }
2740 else
2741 {
2742 require_file_with_macro (TRUE, 'info_TEXINFOS',
2743 FOREIGN, 'mdate-sh');
2744 }
2746 my $conf_dir;
2747 if ($config_aux_dir_set_in_configure_in)
2748 {
2749 $conf_dir = $config_aux_dir;
2750 $conf_dir .= '/' unless $conf_dir =~ /\/$/;
2751 }
2752 else
2753 {
2754 $conf_dir = '$(srcdir)/';
2755 }
2756 $output_rules .= file_contents ('texi-vers',
2757 new Automake::Location,
2758 TEXI => $texi,
2759 VTI => $vti,
2760 STAMPVTI => "${outdir}stamp-$vti",
2761 VTEXI => "$outdir$vtexi",
2762 MDDIR => $conf_dir,
2763 DIRSTAMP => $dirstamp);
2764 }
2765 }
2767 # Handle location of texinfo.tex.
2768 my $need_texi_file = 0;
2769 my $texinfodir;
2770 if (var ('TEXINFO_TEX'))
2771 {
2772 # The user defined TEXINFO_TEX so assume he knows what he is
2773 # doing.
2774 $texinfodir = ('$(srcdir)/'
2775 . dirname (variable_value ('TEXINFO_TEX')));
2776 }
2777 elsif (option 'cygnus')
2778 {
2779 $texinfodir = '$(top_srcdir)/../texinfo';
2780 define_variable ('TEXINFO_TEX', "$texinfodir/texinfo.tex", INTERNAL);
2781 }
2782 elsif ($config_aux_dir_set_in_configure_in)
2783 {
2784 $texinfodir = $config_aux_dir;
2785 define_variable ('TEXINFO_TEX', "$texinfodir/texinfo.tex", INTERNAL);
2786 $need_texi_file = 2; # so that we require_conf_file later
2787 }
2788 else
2789 {
2790 $texinfodir = '$(srcdir)';
2791 $need_texi_file = 1;
2792 }
2793 define_variable ('am__TEXINFO_TEX_DIR', $texinfodir, INTERNAL);
2795 push (@dist_targets, 'dist-info');
2797 if (! option 'no-installinfo')
2798 {
2799 # Make sure documentation is made and installed first. Use
2800 # $(INFO_DEPS), not 'info', because otherwise recursive makes
2801 # get run twice during "make all".
2802 unshift (@all, '$(INFO_DEPS)');
2803 }
2805 define_variable ("INFO_DEPS", "@info_deps_list", INTERNAL);
2806 define_files_variable ("DVIS", @infobase, 'dvi', INTERNAL);
2807 define_files_variable ("PDFS", @infobase, 'pdf', INTERNAL);
2808 define_files_variable ("PSS", @infobase, 'ps', INTERNAL);
2809 define_files_variable ("HTMLS", @infobase, 'html', INTERNAL);
2811 # This next isn't strictly needed now -- the places that look here
2812 # could easily be changed to look in info_TEXINFOS. But this is
2813 # probably better, in case noinst_TEXINFOS is ever supported.
2814 define_variable ("TEXINFOS", variable_value ('info_TEXINFOS'), INTERNAL);
2816 # Do some error checking. Note that this file is not required
2817 # when in Cygnus mode; instead we defined TEXINFO_TEX explicitly
2818 # up above.
2819 if ($need_texi_file && ! option 'no-texinfo.tex')
2820 {
2821 if ($need_texi_file > 1)
2822 {
2823 require_conf_file_with_macro (TRUE, 'info_TEXINFOS', FOREIGN,
2824 'texinfo.tex');
2825 }
2826 else
2827 {
2828 require_file_with_macro (TRUE, 'info_TEXINFOS', FOREIGN,
2829 'texinfo.tex');
2830 }
2831 }
2833 return makefile_wrap ("", "\t ", @texi_cleans);
2834 }
2837 # handle_texinfo ()
2838 # -----------------
2839 # Handle all Texinfo source.
2840 sub handle_texinfo ()
2841 {
2842 reject_var 'TEXINFOS', "`TEXINFOS' is an anachronism; use `info_TEXINFOS'";
2843 # FIXME: I think this is an obsolete future feature name.
2844 reject_var 'html_TEXINFOS', "HTML generation not yet supported";
2846 my $info_texinfos = var ('info_TEXINFOS');
2847 my $texiclean = "";
2848 if ($info_texinfos)
2849 {
2850 $texiclean = handle_texinfo_helper ($info_texinfos);
2851 }
2852 $output_rules .= file_contents ('texinfos',
2853 new Automake::Location,
2854 TEXICLEAN => $texiclean,
2855 'LOCAL-TEXIS' => !!$info_texinfos);
2856 }
2859 # Handle any man pages.
2860 sub handle_man_pages
2861 {
2862 reject_var 'MANS', "`MANS' is an anachronism; use `man_MANS'";
2864 # Find all the sections in use. We do this by first looking for
2865 # "standard" sections, and then looking for any additional
2866 # sections used in man_MANS.
2867 my (%sections, %vlist);
2868 # We handle nodist_ for uniformity. man pages aren't distributed
2869 # by default so it isn't actually very important.
2870 foreach my $pfx ('', 'dist_', 'nodist_')
2871 {
2872 # Add more sections as needed.
2873 foreach my $section ('0'..'9', 'n', 'l')
2874 {
2875 my $varname = $pfx . 'man' . $section . '_MANS';
2876 if (var ($varname))
2877 {
2878 $sections{$section} = 1;
2879 $varname = '$(' . $varname . ')';
2880 $vlist{$varname} = 1;
2882 &push_dist_common ($varname)
2883 if $pfx eq 'dist_';
2884 }
2885 }
2887 my $varname = $pfx . 'man_MANS';
2888 my $var = var ($varname);
2889 if ($var)
2890 {
2891 foreach ($var->value_as_list_recursive ('all'))
2892 {
2893 # A page like `foo.1c' goes into man1dir.
2894 if (/\.([0-9a-z])([a-z]*)$/)
2895 {
2896 $sections{$1} = 1;
2897 }
2898 }
2900 $varname = '$(' . $varname . ')';
2901 $vlist{$varname} = 1;
2902 &push_dist_common ($varname)
2903 if $pfx eq 'dist_';
2904 }
2905 }
2907 return unless %sections;
2909 # Now for each section, generate an install and unintall rule.
2910 # Sort sections so output is deterministic.
2911 foreach my $section (sort keys %sections)
2912 {
2913 $output_rules .= &file_contents ('mans',
2914 new Automake::Location,
2915 SECTION => $section);
2916 }
2918 my @mans = sort keys %vlist;
2919 $output_vars .= file_contents ('mans-vars',
2920 new Automake::Location,
2921 MANS => "@mans");
2923 push (@all, '$(MANS)')
2924 unless option 'no-installman';
2925 }
2927 # Handle DATA variables.
2928 sub handle_data
2929 {
2930 &am_install_var ('-noextra', '-candist', 'data', 'DATA',
2931 'data', 'sysconf', 'sharedstate', 'localstate',
2932 'pkgdata', 'lisp', 'noinst', 'check');
2933 }
2935 # Handle TAGS.
2936 sub handle_tags
2937 {
2938 my @tag_deps = ();
2939 my @ctag_deps = ();
2940 if (var ('SUBDIRS'))
2941 {
2942 $output_rules .= ("tags-recursive:\n"
2943 . "\tlist=\'\$(SUBDIRS)\'; for subdir in \$\$list; do \\\n"
2944 # Never fail here if a subdir fails; it
2945 # isn't important.
2946 . "\t test \"\$\$subdir\" = . || (cd \$\$subdir"
2947 . " && \$(MAKE) \$(AM_MAKEFLAGS) tags); \\\n"
2948 . "\tdone\n");
2949 push (@tag_deps, 'tags-recursive');
2950 &depend ('.PHONY', 'tags-recursive');
2952 $output_rules .= ("ctags-recursive:\n"
2953 . "\tlist=\'\$(SUBDIRS)\'; for subdir in \$\$list; do \\\n"
2954 # Never fail here if a subdir fails; it
2955 # isn't important.
2956 . "\t test \"\$\$subdir\" = . || (cd \$\$subdir"
2957 . " && \$(MAKE) \$(AM_MAKEFLAGS) ctags); \\\n"
2958 . "\tdone\n");
2959 push (@ctag_deps, 'ctags-recursive');
2960 &depend ('.PHONY', 'ctags-recursive');
2961 }
2963 if (&saw_sources_p (1)
2964 || var ('ETAGS_ARGS')
2965 || @tag_deps)
2966 {
2967 my @config;
2968 foreach my $spec (@config_headers)
2969 {
2970 my ($out, @ins) = split_config_file_spec ($spec);
2971 foreach my $in (@ins)
2972 {
2973 # If the config header source is in this directory,
2974 # require it.
2975 push @config, basename ($in)
2976 if $relative_dir eq dirname ($in);
2977 }
2978 }
2979 $output_rules .= &file_contents ('tags',
2980 new Automake::Location,
2981 CONFIG => "@config",
2982 TAGSDIRS => "@tag_deps",
2983 CTAGSDIRS => "@ctag_deps");
2985 set_seen 'TAGS_DEPENDENCIES';
2986 }
2987 elsif (reject_var ('TAGS_DEPENDENCIES',
2988 "doesn't make sense to define `TAGS_DEPENDENCIES'"
2989 . "without\nsources or `ETAGS_ARGS'"))
2990 {
2991 }
2992 else
2993 {
2994 # Every Makefile must define some sort of TAGS rule.
2995 # Otherwise, it would be possible for a top-level "make TAGS"
2996 # to fail because some subdirectory failed.
2997 $output_rules .= "tags: TAGS\nTAGS:\n\n";
2998 # Ditto ctags.
2999 $output_rules .= "ctags: CTAGS\nCTAGS:\n\n";
3000 }
3001 }
3003 # Handle multilib support.
3004 sub handle_multilib
3005 {
3006 if ($seen_multilib && $relative_dir eq '.')
3007 {
3008 $output_rules .= &file_contents ('multilib', new Automake::Location);
3009 push (@all, 'all-multi');
3010 }
3011 }
3014 # $BOOLEAN
3015 # &for_dist_common ($A, $B)
3016 # -------------------------
3017 # Subroutine for &handle_dist: sort files to dist.
3018 #
3019 # We put README first because it then becomes easier to make a
3020 # Usenet-compliant shar file (in these, README must be first).
3021 #
3022 # FIXME: do more ordering of files here.
3023 sub for_dist_common
3024 {
3025 return 0
3026 if $a eq $b;
3027 return -1
3028 if $a eq 'README';
3029 return 1
3030 if $b eq 'README';
3031 return $a cmp $b;
3032 }
3035 # handle_dist ($MAKEFILE)
3036 # -----------------------
3037 # Handle 'dist' target.
3038 sub handle_dist
3039 {
3040 my ($makefile) = @_;
3042 # `make dist' isn't used in a Cygnus-style tree.
3043 # Omit the rules so that people don't try to use them.
3044 return if option 'cygnus';
3046 # At least one of the archive formats must be enabled.
3047 if ($relative_dir eq '.')
3048 {
3049 my $archive_defined = option 'no-dist-gzip' ? 0 : 1;
3050 $archive_defined ||=
3051 grep { option "dist-$_" } ('shar', 'zip', 'tarZ', 'bzip2');
3052 error (option 'no-dist-gzip',
3053 "no-dist-gzip specified but no dist-* specified, "
3054 . "at least one archive format must be enabled")
3055 unless $archive_defined;
3056 }
3058 # Look for common files that should be included in distribution.
3059 # If the aux dir is set, and it does not have a Makefile.am, then
3060 # we check for these files there as well.
3061 my $check_aux = 0;
3062 my $auxdir = '';
3063 if ($relative_dir eq '.'
3064 && $config_aux_dir_set_in_configure_in)
3065 {
3066 ($auxdir = $config_aux_dir) =~ s,^\$\(top_srcdir\)/,,;
3067 if (! &is_make_dir ($auxdir))
3068 {
3069 $check_aux = 1;
3070 }
3071 }
3072 foreach my $cfile (@common_files)
3073 {
3074 if (-f ($relative_dir . "/" . $cfile)
3075 # The file might be absent, but if it can be built it's ok.
3076 || rule $cfile)
3077 {
3078 &push_dist_common ($cfile);
3079 }
3081 # Don't use `elsif' here because a file might meaningfully
3082 # appear in both directories.
3083 if ($check_aux && -f ($auxdir . '/' . $cfile))
3084 {
3085 &push_dist_common ($auxdir . '/' . $cfile);
3086 }
3087 }
3089 # We might copy elements from $configure_dist_common to
3090 # %dist_common if we think we need to. If the file appears in our
3091 # directory, we would have discovered it already, so we don't
3092 # check that. But if the file is in a subdir without a Makefile,
3093 # we want to distribute it here if we are doing `.'. Ugly!
3094 if ($relative_dir eq '.')
3095 {
3096 foreach my $file (split (' ' , $configure_dist_common))
3097 {
3098 push_dist_common ($file)
3099 unless is_make_dir (dirname ($file));
3100 }
3101 }
3103 # Files to distributed. Don't use ->value_as_list_recursive
3104 # as it recursively expands `$(dist_pkgdata_DATA)' etc.
3105 my @dist_common = split (' ', rvar ('DIST_COMMON')->variable_value);
3106 @dist_common = uniq (sort for_dist_common (@dist_common));
3107 variable_delete 'DIST_COMMON';
3108 define_pretty_variable ('DIST_COMMON', TRUE, INTERNAL, @dist_common);
3110 # Now that we've processed DIST_COMMON, disallow further attempts
3111 # to set it.
3112 $handle_dist_run = 1;
3114 # Scan EXTRA_DIST to see if we need to distribute anything from a
3115 # subdir. If so, add it to the list. I didn't want to do this
3116 # originally, but there were so many requests that I finally
3117 # relented.
3118 my $extra_dist = var ('EXTRA_DIST');
3119 if ($extra_dist)
3120 {
3121 # FIXME: This should be fixed to work with conditions. That
3122 # will require only making the entries in %dist_dirs under the
3123 # appropriate condition. This is meaningful if the nature of
3124 # the distribution should depend upon the configure options
3125 # used.
3126 foreach ($extra_dist->value_as_list_recursive ('all'))
3127 {
3128 next if /^\@.*\@$/;
3129 next unless s,/+[^/]+$,,;
3130 $dist_dirs{$_} = 1
3131 unless $_ eq '.';
3132 }
3133 }
3135 # We have to check DIST_COMMON for extra directories in case the
3136 # user put a source used in AC_OUTPUT into a subdir.
3137 my $topsrcdir = backname ($relative_dir);
3138 foreach (rvar ('DIST_COMMON')->value_as_list_recursive ('all'))
3139 {
3140 next if /^\@.*\@$/;
3141 s/\$\(top_srcdir\)/$topsrcdir/;
3142 s/\$\(srcdir\)/./;
3143 # Strip any leading `./'.
3144 s,^(:?\./+)*,,;
3145 next unless s,/+[^/]+$,,;
3146 $dist_dirs{$_} = 1
3147 unless $_ eq '.';
3148 }
3150 # Rule to check whether a distribution is viable.
3151 my %transform = ('DISTCHECK-HOOK' => !! rule 'distcheck-hook',
3152 'GETTEXT' => $seen_gettext && !$seen_gettext_external);
3154 # Prepend $(distdir) to each directory given.
3155 my %rewritten = map { '$(distdir)/' . "$_" => 1 } keys %dist_dirs;
3156 $transform{'DISTDIRS'} = join (' ', sort keys %rewritten);
3158 # If we have SUBDIRS, create all dist subdirectories and do
3159 # recursive build.
3160 my $subdirs = var ('SUBDIRS');
3161 if ($subdirs)
3162 {
3163 # If SUBDIRS is conditionally defined, then set DIST_SUBDIRS
3164 # to all possible directories, and use it. If DIST_SUBDIRS is
3165 # defined, just use it.
3166 my $dist_subdir_name;
3167 # Note that we check DIST_SUBDIRS first on purpose, so that
3168 # we don't call has_conditional_contents for now reason.
3169 # (In the past one project used so many conditional subdirectories
3170 # that calling has_conditional_contents on SUBDIRS caused
3171 # automake to grow to 150Mb -- this should not happen with
3172 # the current implementation of has_conditional_contents,
3173 # but it's more efficient to avoid the call anyway.)
3174 if (var ('DIST_SUBDIRS'))
3175 {
3176 $dist_subdir_name = 'DIST_SUBDIRS';
3177 }
3178 elsif ($subdirs->has_conditional_contents)
3179 {
3180 $dist_subdir_name = 'DIST_SUBDIRS';
3181 define_pretty_variable
3182 ('DIST_SUBDIRS', TRUE, INTERNAL,
3183 uniq ($subdirs->value_as_list_recursive ('all')));
3184 }
3185 else
3186 {
3187 $dist_subdir_name = 'SUBDIRS';
3188 # We always define this because that is what `distclean'
3189 # wants.
3190 define_pretty_variable ('DIST_SUBDIRS', TRUE, INTERNAL,
3191 '$(SUBDIRS)');
3192 }
3194 $transform{'DIST_SUBDIR_NAME'} = $dist_subdir_name;
3195 }
3197 # If the target `dist-hook' exists, make sure it is run. This
3198 # allows users to do random weird things to the distribution
3199 # before it is packaged up.
3200 push (@dist_targets, 'dist-hook')
3201 if rule 'dist-hook';
3202 $transform{'DIST-TARGETS'} = join(' ', @dist_targets);
3204 $output_rules .= &file_contents ('distdir',
3205 new Automake::Location,
3206 %transform);
3207 }
3210 # &handle_subdirs ()
3211 # ------------------
3212 # Handle subdirectories.
3213 sub handle_subdirs ()
3214 {
3215 my $subdirs = var ('SUBDIRS');
3216 return
3217 unless $subdirs;
3219 my @subdirs = $subdirs->value_as_list_recursive ('all');
3220 my @dsubdirs = ();
3221 my $dsubdirs = var ('DIST_SUBDIRS');
3222 @dsubdirs = $dsubdirs->value_as_list_recursive ('all')
3223 if $dsubdirs;
3225 # If an `obj/' directory exists, BSD make will enter it before
3226 # reading `Makefile'. Hence the `Makefile' in the current directory
3227 # will not be read.
3228 #
3229 # % cat Makefile
3230 # all:
3231 # echo Hello
3232 # % cat obj/Makefile
3233 # all:
3234 # echo World
3235 # % make # GNU make
3236 # echo Hello
3237 # Hello
3238 # % pmake # BSD make
3239 # echo World
3240 # World
3241 msg_var ('portability', 'SUBDIRS',
3242 "naming a subdirectory `obj' causes troubles with BSD make")
3243 if grep ($_ eq 'obj', @subdirs);
3244 msg_var ('portability', 'DIST_SUBDIRS',
3245 "naming a subdirectory `obj' causes troubles with BSD make")
3246 if grep ($_ eq 'obj', @dsubdirs);
3248 # Make sure each directory mentioned in SUBDIRS actually exists.
3249 foreach my $dir (@subdirs)
3250 {
3251 # Skip directories substituted by configure.
3252 next if $dir =~ /^\@.*\@$/;
3254 if (! -d $am_relative_dir . '/' . $dir)
3255 {
3256 err_var ('SUBDIRS', "required directory $am_relative_dir/$dir "
3257 . "does not exist");
3258 next;
3259 }
3261 err_var 'SUBDIRS', "directory should not contain `/'"
3262 if $dir =~ /\//;
3263 }
3265 $output_rules .= &file_contents ('subdirs', new Automake::Location);
3266 rvar ('RECURSIVE_TARGETS')->rdef (TRUE)->{'pretty'} = VAR_SORTED; # Gross!
3267 }
3270 # ($REGEN, @DEPENDENCIES)
3271 # &scan_aclocal_m4
3272 # ----------------
3273 # If aclocal.m4 creation is automated, return the list of its dependencies.
3274 sub scan_aclocal_m4 ()
3275 {
3276 my $regen_aclocal = 0;
3278 set_seen 'CONFIG_STATUS_DEPENDENCIES';
3279 set_seen 'CONFIGURE_DEPENDENCIES';
3281 if (-f 'aclocal.m4')
3282 {
3283 &push_dist_common ('aclocal.m4')
3284 if $relative_dir eq '.';
3285 &define_variable ("ACLOCAL_M4", '$(top_srcdir)/aclocal.m4', INTERNAL);
3287 my $aclocal = new Automake::XFile "< aclocal.m4";
3288 my $line = $aclocal->getline;
3289 $regen_aclocal = $line =~ 'generated automatically by aclocal';
3290 }
3292 my @ac_deps = ();
3294 if (set_seen ('ACLOCAL_M4_SOURCES'))
3295 {
3296 push (@ac_deps, '$(ACLOCAL_M4_SOURCES)');
3297 msg_var ('obsolete', 'ACLOCAL_M4_SOURCES',
3298 "`ACLOCAL_M4_SOURCES' is obsolete.\n"
3299 . "It should be safe to simply remove it.");
3300 }
3302 # Note that it might be possible that aclocal.m4 doesn't exist but
3303 # should be auto-generated. This case probably isn't very
3304 # important.
3306 return ($regen_aclocal, @ac_deps);
3307 }
3310 # @DEPENDENCY
3311 # &rewrite_inputs_into_dependencies ($ADD_SRCDIR, @INPUTS)
3312 # --------------------------------------------------------
3313 # Rewrite a list of input files into a form suitable to put on a
3314 # dependency list. The idea is that if an input file has a directory
3315 # part the same as the current directory, then the directory part is
3316 # simply removed. But if the directory part is different, then
3317 # $(top_srcdir) is prepended. Among other things, this is used to
3318 # generate the dependency list for the output files generated by
3319 # AC_OUTPUT. Consider what the dependencies should look like in this
3320 # case:
3321 # AC_OUTPUT(src/out:src/in1:lib/in2)
3322 # The first argument, ADD_SRCDIR, is 1 if $(top_srcdir) should be added.
3323 # If 0 then files that require this addition will simply be ignored.
3324 sub rewrite_inputs_into_dependencies ($@)
3325 {
3326 my ($add_srcdir, @inputs) = @_;
3327 my @newinputs;
3329 foreach my $single (@inputs)
3330 {
3331 if (dirname ($single) eq $relative_dir)
3332 {
3333 push (@newinputs, basename ($single));
3334 }
3335 else
3336 {
3337 push (@newinputs, ($add_srcdir ? '$(top_srcdir)/' : '') . $single);
3338 }
3339 }
3340 return @newinputs;
3341 }
3344 # &handle_configure ($LOCAL, $INPUT, @SECONDARY_INPUTS)
3345 # -----------------------------------------------------
3346 # Handle remaking and configure stuff.
3347 # We need the name of the input file, to do proper remaking rules.
3348 sub handle_configure ($$@)
3349 {
3350 my ($local, $input, @secondary_inputs) = @_;
3352 my $input_base = basename ($input);
3353 my $local_base = basename ($local);
3355 my $amfile = $input_base . '.am';
3356 # We know we can always add '.in' because it really should be an
3357 # error if the .in was missing originally.
3358 my $infile = '$(srcdir)/' . $input_base . '.in';
3359 my $colon_infile = '';
3360 if ($local ne $input || @secondary_inputs)
3361 {
3362 $colon_infile = ':' . $input . '.in';
3363 }
3364 $colon_infile .= ':' . join (':', @secondary_inputs)
3365 if @secondary_inputs;
3367 my @rewritten = rewrite_inputs_into_dependencies (1, @secondary_inputs);
3369 my ($regen_aclocal_m4, @aclocal_m4_deps) = scan_aclocal_m4;
3372 define_pretty_variable ('am__configure_deps', TRUE, INTERNAL,
3373 @configure_deps);
3375 $output_rules .= file_contents
3376 ('configure',
3377 new Automake::Location,
3378 MAKEFILE => $local_base,
3379 'MAKEFILE-DEPS' => "@rewritten",
3380 'CONFIG-MAKEFILE' => ($relative_dir eq '.') ? '$@' : '$(subdir)/$@',
3381 'MAKEFILE-IN' => $infile,
3382 'MAKEFILE-IN-DEPS' => "@include_stack",
3383 'MAKEFILE-AM' => $amfile,
3384 STRICTNESS => global_option 'cygnus'
3385 ? 'cygnus' : $strictness_name,
3386 'USE-DEPS' => global_option 'no-dependencies'
3387 ? ' --ignore-deps' : '',
3388 'MAKEFILE-AM-SOURCES' => "$input$colon_infile",
3389 'REGEN-ACLOCAL-M4' => $regen_aclocal_m4,
3390 ACLOCAL_M4_DEPS => "@aclocal_m4_deps");
3392 if ($relative_dir eq '.')
3393 {
3394 &push_dist_common ('acconfig.h')
3395 if -f 'acconfig.h';
3396 }
3398 # If we have a configure header, require it.
3399 my $hdr_index = 0;
3400 my @distclean_config;
3401 foreach my $spec (@config_headers)
3402 {
3403 $hdr_index += 1;
3404 # $CONFIG_H_PATH: config.h from top level.
3405 my ($config_h_path, @ins) = split_config_file_spec ($spec);
3406 my $config_h_dir = dirname ($config_h_path);
3408 # If the header is in the current directory we want to build
3409 # the header here. Otherwise, if we're at the topmost
3410 # directory and the header's directory doesn't have a
3411 # Makefile, then we also want to build the header.
3412 if ($relative_dir eq $config_h_dir
3413 || ($relative_dir eq '.' && ! &is_make_dir ($config_h_dir)))
3414 {
3415 my ($cn_sans_dir, $stamp_dir);
3416 if ($relative_dir eq $config_h_dir)
3417 {
3418 $cn_sans_dir = basename ($config_h_path);
3419 $stamp_dir = '';
3420 }
3421 else
3422 {
3423 $cn_sans_dir = $config_h_path;
3424 if ($config_h_dir eq '.')
3425 {
3426 $stamp_dir = '';
3427 }
3428 else
3429 {
3430 $stamp_dir = $config_h_dir . '/';
3431 }
3432 }
3434 # Compute relative path from directory holding output
3435 # header to directory holding input header. FIXME:
3436 # doesn't handle case where we have multiple inputs.
3437 my $in0_sans_dir;
3438 if (dirname ($ins[0]) eq $relative_dir)
3439 {
3440 $in0_sans_dir = basename ($ins[0]);
3441 }
3442 else
3443 {
3444 $in0_sans_dir = backname ($relative_dir) . '/' . $ins[0];
3445 }
3447 require_file ($config_header_location, FOREIGN, $in0_sans_dir);
3449 # Header defined and in this directory.
3450 my @files;
3451 if (-f $config_h_path . '.top')
3452 {
3453 push (@files, "$cn_sans_dir.top");
3454 }
3455 if (-f $config_h_path . '.bot')
3456 {
3457 push (@files, "$cn_sans_dir.bot");
3458 }
3460 push_dist_common (@files);
3462 # For now, acconfig.h can only appear in the top srcdir.
3463 if (-f 'acconfig.h')
3464 {
3465 push (@files, '$(top_srcdir)/acconfig.h');
3466 }
3468 my $stamp = "${stamp_dir}stamp-h${hdr_index}";
3469 $output_rules .=
3470 file_contents ('remake-hdr',
3471 new Automake::Location,
3472 FILES => "@files",
3473 CONFIG_H => $cn_sans_dir,
3474 CONFIG_HIN => $in0_sans_dir,
3475 CONFIG_H_PATH => $config_h_path,
3476 STAMP => "$stamp");
3478 push @distclean_config, $cn_sans_dir, $stamp;
3479 }
3480 }
3482 $output_rules .= file_contents ('clean-hdr',
3483 new Automake::Location,
3484 FILES => "@distclean_config")
3485 if @distclean_config;
3487 # Set location of mkinstalldirs.
3488 define_variable ('mkinstalldirs',
3489 '$(SHELL) ' . $config_aux_dir . '/mkinstalldirs',
3490 INTERNAL);
3492 reject_var ('CONFIG_HEADER',
3493 "`CONFIG_HEADER' is an anachronism; now determined "
3494 . "automatically\nfrom `$configure_ac'");
3496 my @config_h;
3497 foreach my $spec (@config_headers)
3498 {
3499 my ($out, @ins) = split_config_file_spec ($spec);
3500 # Generate CONFIG_HEADER define.
3501 if ($relative_dir eq dirname ($out))
3502 {
3503 push @config_h, basename ($out);
3504 }
3505 else
3506 {
3507 push @config_h, "\$(top_builddir)/$out";
3508 }
3509 }
3510 define_variable ("CONFIG_HEADER", "@config_h", INTERNAL)
3511 if @config_h;
3513 # Now look for other files in this directory which must be remade
3514 # by config.status, and generate rules for them.
3515 my @actual_other_files = ();
3516 foreach my $lfile (@other_input_files)
3517 {
3518 my $file;
3519 my @inputs;
3520 if ($lfile =~ /^([^:]*):(.*)$/)
3521 {
3522 # This is the ":" syntax of AC_OUTPUT.
3523 $file = $1;
3524 @inputs = split (':', $2);
3525 }
3526 else
3527 {
3528 # Normal usage.
3529 $file = $lfile;
3530 @inputs = $file . '.in';
3531 }
3533 # Automake files should not be stored in here, but in %MAKE_LIST.
3534 prog_error "$lfile in \@other_input_files"
3535 if -f $file . '.am';
3537 my $local = basename ($file);
3539 # Make sure the dist directory for each input file is created.
3540 # We only have to do this at the topmost level though. This
3541 # is a bit ugly but it easier than spreading out the logic,
3542 # especially in cases like AC_OUTPUT(foo/out:bar/in), where
3543 # there is no Makefile in bar/.
3544 if ($relative_dir eq '.')
3545 {
3546 foreach (@inputs)
3547 {
3548 $dist_dirs{dirname ($_)} = 1;
3549 }
3550 }
3552 # We skip files that aren't in this directory. However, if
3553 # the file's directory does not have a Makefile, and we are
3554 # currently doing `.', then we create a rule to rebuild the
3555 # file in the subdir.
3556 my $fd = dirname ($file);
3557 if ($fd ne $relative_dir)
3558 {
3559 if ($relative_dir eq '.' && ! &is_make_dir ($fd))
3560 {
3561 $local = $file;
3562 }
3563 else
3564 {
3565 next;
3566 }
3567 }
3569 my @rewritten_inputs = rewrite_inputs_into_dependencies (1, @inputs);
3570 $output_rules .= ($local . ': '
3571 . '$(top_builddir)/config.status '
3572 . "@rewritten_inputs\n"
3573 . "\t"
3574 . 'cd $(top_builddir) && '
3575 . '$(SHELL) ./config.status '
3576 . ($relative_dir eq '.' ? '' : '$(subdir)/')
3577 . '$@'
3578 . "\n");
3579 push (@actual_other_files, $local);
3581 # Require all input files.
3582 require_file ($ac_config_files_location, FOREIGN,
3583 rewrite_inputs_into_dependencies (0, @inputs));
3584 }
3586 foreach my $struct (@config_links)
3587 {
3588 my ($spec, $where) = @$struct;
3589 my ($link, $file) = split /:/, $spec;
3591 # We skip links that aren't in this directory. However, if
3592 # the link's directory does not have a Makefile, and we are
3593 # currently doing `.', then we add the link to CONFIG_CLEAN_FILES
3594 # in `.'s Makefile.in.
3595 my $local = basename ($link);
3596 my $fd = dirname ($link);
3597 if ($fd ne $relative_dir)
3598 {
3599 if ($relative_dir eq '.' && ! &is_make_dir ($fd))
3600 {
3601 $local = $link;
3602 }
3603 else
3604 {
3605 $local = undef;
3606 }
3607 }
3609 push @actual_other_files, $local if $local;
3611 $local = basename ($file);
3612 $fd = dirname ($file);
3614 # Make sure the dist directory for each input file is created.
3615 # We only have to do this at the topmost level though.
3616 if ($relative_dir eq '.')
3617 {
3618 $dist_dirs{$fd} = 1;
3619 }
3621 # We skip files that aren't in this directory. However, if
3622 # the files's directory does not have a Makefile, and we are
3623 # currently doing `.', then we require the file from `.'.
3624 if ($fd ne $relative_dir)
3625 {
3626 if ($relative_dir eq '.' && ! &is_make_dir ($fd))
3627 {
3628 $local = $file;
3629 }
3630 else
3631 {
3632 next;
3633 }
3634 }
3636 # Require all input files.
3637 require_file ($where, FOREIGN, $local);
3638 }
3640 # These files get removed by "make distclean".
3641 define_pretty_variable ('CONFIG_CLEAN_FILES', TRUE, INTERNAL,
3642 @actual_other_files);
3643 }
3645 # Handle C headers.
3646 sub handle_headers
3647 {
3648 my @r = &am_install_var ('-defaultdist', 'header', 'HEADERS', 'include',
3649 'oldinclude', 'pkginclude',
3650 'noinst', 'check');
3651 foreach (@r)
3652 {
3653 next unless $_->[1] =~ /\..*$/;
3654 &saw_extension ($&);
3655 }
3656 }
3658 sub handle_gettext
3659 {
3660 return if ! $seen_gettext || $relative_dir ne '.';
3662 my $subdirs = var 'SUBDIRS';
3664 if (! $subdirs)
3665 {
3666 err_ac "AM_GNU_GETTEXT used but SUBDIRS not defined";
3667 return;
3668 }
3670 # Perform some sanity checks to help users get the right setup.
3671 # We disable these tests when po/ doesn't exist in order not to disallow
3672 # unusual gettext setups.
3673 #
3674 # Bruno Haible:
3675 # | The idea is:
3676 # |
3677 # | 1) If a package doesn't have a directory po/ at top level, it
3678 # | will likely have multiple po/ directories in subpackages.
3679 # |
3680 # | 2) It is useful to warn for the absence of intl/ if AM_GNU_GETTEXT
3681 # | is used without 'external'. It is also useful to warn for the
3682 # | presence of intl/ if AM_GNU_GETTEXT([external]) is used. Both
3683 # | warnings apply only to the usual layout of packages, therefore
3684 # | they should both be disabled if no po/ directory is found at
3685 # | top level.
3687 if (-d 'po')
3688 {
3689 my @subdirs = $subdirs->value_as_list_recursive ('all');
3691 msg_var ('syntax', $subdirs,
3692 "AM_GNU_GETTEXT used but `po' not in SUBDIRS")
3693 if ! grep ($_ eq 'po', @subdirs);
3695 # intl/ is not required when AM_GNU_GETTEXT is called with
3696 # the `external' option.
3697 msg_var ('syntax', $subdirs,
3698 "AM_GNU_GETTEXT used but `intl' not in SUBDIRS")
3699 if (! $seen_gettext_external
3700 && ! grep ($_ eq 'intl', @subdirs));
3702 # intl/ should not be used with AM_GNU_GETTEXT([external])
3703 msg_var ('syntax', $subdirs,
3704 "`intl' should not be in SUBDIRS when "
3705 . "AM_GNU_GETTEXT([external]) is used")
3706 if ($seen_gettext_external && grep ($_ eq 'intl', @subdirs));
3707 }
3709 require_file ($ac_gettext_location, GNU, 'ABOUT-NLS');
3710 }
3712 # Handle footer elements.
3713 sub handle_footer
3714 {
3715 # NOTE don't use define_pretty_variable here, because
3716 # $contents{...} is already defined.
3717 $output_vars .= 'SOURCES = ' . variable_value ('SOURCES') . "\n\n"
3718 if variable_value ('SOURCES');
3720 reject_rule ('.SUFFIXES',
3721 "use variable `SUFFIXES', not target `.SUFFIXES'");
3723 # Note: AIX 4.1 /bin/make will fail if any suffix rule appears
3724 # before .SUFFIXES. So we make sure that .SUFFIXES appears before
3725 # anything else, by sticking it right after the default: target.
3726 $output_header .= ".SUFFIXES:\n";
3727 my $suffixes = var 'SUFFIXES';
3728 my @suffixes = Automake::Rule::suffixes;
3729 if (@suffixes || $suffixes)
3730 {
3731 # Make sure SUFFIXES has unique elements. Sort them to ensure
3732 # the output remains consistent. However, $(SUFFIXES) is
3733 # always at the start of the list, unsorted. This is done
3734 # because make will choose rules depending on the ordering of
3735 # suffixes, and this lets the user have some control. Push
3736 # actual suffixes, and not $(SUFFIXES). Some versions of make
3737 # do not like variable substitutions on the .SUFFIXES line.
3738 my @user_suffixes = ($suffixes
3739 ? $suffixes->value_as_list_recursive ('all')
3740 : ());
3742 my %suffixes = map { $_ => 1 } @suffixes;
3743 delete @suffixes{@user_suffixes};
3745 $output_header .= (".SUFFIXES: "
3746 . join (' ', @user_suffixes, sort keys %suffixes)
3747 . "\n");
3748 }
3750 $output_trailer .= file_contents ('footer', new Automake::Location);
3751 }
3754 # Generate `make install' rules.
3755 sub handle_install ()
3756 {
3757 $output_rules .= &file_contents
3758 ('install',
3759 new Automake::Location,
3760 maybe_BUILT_SOURCES => (set_seen ('BUILT_SOURCES')
3761 ? (" \$(BUILT_SOURCES)\n"
3762 . "\t\$(MAKE) \$(AM_MAKEFLAGS)")
3763 : ''),
3764 'installdirs-local' => (rule 'installdirs-local'
3765 ? ' installdirs-local' : ''),
3766 am__installdirs => variable_value ('am__installdirs') || '');
3767 }
3770 # Deal with all and all-am.
3771 sub handle_all ($)
3772 {
3773 my ($makefile) = @_;
3775 # Output `all-am'.
3777 # Put this at the beginning for the sake of non-GNU makes. This
3778 # is still wrong if these makes can run parallel jobs. But it is
3779 # right enough.
3780 unshift (@all, basename ($makefile));
3782 foreach my $spec (@config_headers)
3783 {
3784 my ($out, @ins) = split_config_file_spec ($spec);
3785 push (@all, basename ($out))
3786 if dirname ($out) eq $relative_dir;
3787 }
3789 # Install `all' hooks.
3790 if (rule "all-local")
3791 {
3792 push (@all, "all-local");
3793 &depend ('.PHONY', "all-local");
3794 }
3796 &pretty_print_rule ("all-am:", "\t\t", @all);
3797 &depend ('.PHONY', 'all-am', 'all');
3800 # Output `all'.
3802 my @local_headers = ();
3803 push @local_headers, '$(BUILT_SOURCES)'
3804 if var ('BUILT_SOURCES');
3805 foreach my $spec (@config_headers)
3806 {
3807 my ($out, @ins) = split_config_file_spec ($spec);
3808 push @local_headers, basename ($out)
3809 if dirname ($out) eq $relative_dir;
3810 }
3812 if (@local_headers)
3813 {
3814 # We need to make sure config.h is built before we recurse.
3815 # We also want to make sure that built sources are built
3816 # before any ordinary `all' targets are run. We can't do this
3817 # by changing the order of dependencies to the "all" because
3818 # that breaks when using parallel makes. Instead we handle
3819 # things explicitly.
3820 $output_all .= ("all: @local_headers"
3821 . "\n\t"
3822 . '$(MAKE) $(AM_MAKEFLAGS) '
3823 . (var ('SUBDIRS') ? 'all-recursive' : 'all-am')
3824 . "\n\n");
3825 }
3826 else
3827 {
3828 $output_all .= "all: " . (var ('SUBDIRS')
3829 ? 'all-recursive' : 'all-am') . "\n\n";
3830 }
3831 }
3834 # &do_check_merge_target ()
3835 # -------------------------
3836 # Handle check merge target specially.
3837 sub do_check_merge_target ()
3838 {
3839 if (rule 'check-local')
3840 {
3841 # User defined local form of target. So include it.
3842 push @check_tests, 'check-local';
3843 depend '.PHONY', 'check-local';
3844 }
3846 # In --cygnus mode, check doesn't depend on all.
3847 if (option 'cygnus')
3848 {
3849 # Just run the local check rules.
3850 pretty_print_rule ('check-am:', "\t\t", @check);
3851 }
3852 else
3853 {
3854 # The check target must depend on the local equivalent of
3855 # `all', to ensure all the primary targets are built. Then it
3856 # must build the local check rules.
3857 $output_rules .= "check-am: all-am\n";
3858 pretty_print_rule ("\t\$(MAKE) \$(AM_MAKEFLAGS)", "\t ",
3859 @check)
3860 if @check;
3861 }
3862 pretty_print_rule ("\t\$(MAKE) \$(AM_MAKEFLAGS)", "\t ",
3863 @check_tests)
3864 if @check_tests;
3866 depend '.PHONY', 'check', 'check-am';
3867 # Handle recursion. We have to honor BUILT_SOURCES like for `all:'.
3868 $output_rules .= ("check: "
3869 . (var ('BUILT_SOURCES')
3870 ? "\$(BUILT_SOURCES)\n\t\$(MAKE) \$(AM_MAKEFLAGS) "
3871 : '')
3872 . (var ('SUBDIRS') ? 'check-recursive' : 'check-am')
3873 . "\n");
3874 }
3876 # Handle all 'clean' targets.
3877 sub handle_clean
3878 {
3879 # Clean the files listed in user variables if they exist.
3880 $clean_files{'$(MOSTLYCLEANFILES)'} = MOSTLY_CLEAN
3881 if var ('MOSTLYCLEANFILES');
3882 $clean_files{'$(CLEANFILES)'} = CLEAN
3883 if var ('CLEANFILES');
3884 $clean_files{'$(DISTCLEANFILES)'} = DIST_CLEAN
3885 if var ('DISTCLEANFILES');
3886 $clean_files{'$(MAINTAINERCLEANFILES)'} = MAINTAINER_CLEAN
3887 if var ('MAINTAINERCLEANFILES');
3889 # Built sources are automatically removed by maintainer-clean.
3890 $clean_files{'$(BUILT_SOURCES)'} = MAINTAINER_CLEAN
3891 if var ('BUILT_SOURCES');
3893 # Compute a list of "rm"s to run for each target.
3894 my %rms = (MOSTLY_CLEAN, [],
3895 CLEAN, [],
3896 DIST_CLEAN, [],
3897 MAINTAINER_CLEAN, []);
3899 foreach my $file (keys %clean_files)
3900 {
3901 my $when = $clean_files{$file};
3902 prog_error 'invalid entry in %clean_files'
3903 unless exists $rms{$when};
3905 my $rm = "rm -f $file";
3906 # If file is a variable, make sure when don't call `rm -f' without args.
3907 $rm ="test -z \"$file\" || $rm"
3908 if ($file =~ /^\s*\$(\(.*\)|\{.*\})\s*$/);
3910 push @{$rms{$when}}, "\t-$rm\n";
3911 }
3913 $output_rules .= &file_contents
3914 ('clean',
3915 new Automake::Location,
3916 MOSTLYCLEAN_RMS => join ('', @{$rms{&MOSTLY_CLEAN}}),
3917 CLEAN_RMS => join ('', @{$rms{&CLEAN}}),
3918 DISTCLEAN_RMS => join ('', @{$rms{&DIST_CLEAN}}),
3919 MAINTAINER_CLEAN_RMS => join ('', @{$rms{&MAINTAINER_CLEAN}}));
3920 }
3923 # &target_cmp ($A, $B)
3924 # --------------------
3925 # Subroutine for &handle_factored_dependencies to let `.PHONY' be last.
3926 sub target_cmp
3927 {
3928 return 0
3929 if $a eq $b;
3930 return -1
3931 if $b eq '.PHONY';
3932 return 1
3933 if $a eq '.PHONY';
3934 return $a cmp $b;
3935 }
3938 # &handle_factored_dependencies ()
3939 # --------------------------------
3940 # Handle everything related to gathered targets.
3941 sub handle_factored_dependencies
3942 {
3943 # Reject bad hooks.
3944 foreach my $utarg ('uninstall-data-local', 'uninstall-data-hook',
3945 'uninstall-exec-local', 'uninstall-exec-hook')
3946 {
3947 my $x = $utarg;
3948 $x =~ s/(data|exec)-//;
3949 reject_rule ($utarg, "use `$x', not `$utarg'");
3950 }
3952 reject_rule ('install-local',
3953 "use `install-data-local' or `install-exec-local', "
3954 . "not `install-local'");
3956 reject_rule ('install-info-local',
3957 "`install-info-local' target defined but "
3958 . "`no-installinfo' option not in use")
3959 unless option 'no-installinfo';
3961 # Install the -local hooks.
3962 foreach (keys %dependencies)
3963 {
3964 # Hooks are installed on the -am targets.
3965 s/-am$// or next;
3966 if (rule "$_-local")
3967 {
3968 depend ("$_-am", "$_-local");
3969 depend ('.PHONY', "$_-local");
3970 }
3971 }
3973 # Install the -hook hooks.
3974 # FIXME: Why not be as liberal as we are with -local hooks?
3975 foreach ('install-exec', 'install-data', 'uninstall')
3976 {
3977 if (rule ("$_-hook"))
3978 {
3979 $actions{"$_-am"} .=
3980 ("\t\@\$(NORMAL_INSTALL)\n"
3981 . "\t" . '$(MAKE) $(AM_MAKEFLAGS) ' . "$_-hook\n");
3982 }
3983 }
3985 # All the required targets are phony.
3986 depend ('.PHONY', keys %required_targets);
3988 # Actually output gathered targets.
3989 foreach (sort target_cmp keys %dependencies)
3990 {
3991 # If there is nothing about this guy, skip it.
3992 next
3993 unless (@{$dependencies{$_}}
3994 || $actions{$_}
3995 || $required_targets{$_});
3997 # Define gathered targets in undefined conditions.
3998 # FIXME: Right now we must handle .PHONY as an exception,
3999 # because people write things like
4000 # .PHONY: myphonytarget
4001 # to append dependencies. This would not work if Automake
4002 # refrained from defining its own .PHONY target as it does
4003 # with other overridden targets.
4004 my @undefined_conds = (TRUE,);
4005 if ($_ ne '.PHONY')
4006 {
4007 @undefined_conds =
4008 Automake::Rule::define ($_, 'internal',
4009 RULE_AUTOMAKE, TRUE, INTERNAL);
4010 }
4011 my @uniq_deps = uniq (sort @{$dependencies{$_}});
4012 foreach my $cond (@undefined_conds)
4013 {
4014 my $condstr = $cond->subst_string;
4015 &pretty_print_rule ("$condstr$_:", "$condstr\t", @uniq_deps);
4016 $output_rules .= $actions{$_} if defined $actions{$_};
4017 $output_rules .= "\n";
4018 }
4019 }
4020 }
4023 # &handle_tests_dejagnu ()
4024 # ------------------------
4025 sub handle_tests_dejagnu
4026 {
4027 push (@check_tests, 'check-DEJAGNU');
4028 $output_rules .= file_contents ('dejagnu', new Automake::Location);
4029 }
4032 # Handle TESTS variable and other checks.
4033 sub handle_tests
4034 {
4035 if (option 'dejagnu')
4036 {
4037 &handle_tests_dejagnu;
4038 }
4039 else
4040 {
4041 foreach my $c ('DEJATOOL', 'RUNTEST', 'RUNTESTFLAGS')
4042 {
4043 reject_var ($c, "`$c' defined but `dejagnu' not in "
4044 . "`AUTOMAKE_OPTIONS'");
4045 }
4046 }
4048 if (var ('TESTS'))
4049 {
4050 push (@check_tests, 'check-TESTS');
4051 $output_rules .= &file_contents ('check', new Automake::Location);
4052 }
4053 }
4055 # Handle Emacs Lisp.
4056 sub handle_emacs_lisp
4057 {
4058 my @elfiles = &am_install_var ('-candist', 'lisp', 'LISP',
4059 'lisp', 'noinst');
4061 return if ! @elfiles;
4063 # Generate .elc files.
4064 my @elcfiles = map { $_->[1] . 'c' } @elfiles;
4066 define_pretty_variable ('ELCFILES', TRUE, INTERNAL, @elcfiles);
4067 define_pretty_variable ('am__ELFILES', TRUE, INTERNAL,
4068 map { $_->[1] } @elfiles);
4070 # Do not depend on the build rules if ELCFILES is empty.
4071 # This is necessary because overriding ELCFILES= is a documented
4072 # idiom to disable byte-compilation.
4073 if (variable_value ('ELCFILES'))
4074 {
4075 # It's important that all depends on elc-stamp so that
4076 # all .elc files get recompiled whenever a .el changes.
4077 # It's important that all depends on $(ELCFILES) so that
4078 # we can recover if any of them is deleted.
4079 push (@all, 'elc-stamp', '$(ELCFILES)');
4080 }
4082 require_variables ($elfiles[0][0], "Emacs Lisp sources seen", TRUE,
4083 'EMACS', 'lispdir');
4084 require_conf_file ($elfiles[0][0], FOREIGN, 'elisp-comp');
4085 &define_variable ('elisp_comp', $config_aux_dir . '/elisp-comp', INTERNAL);
4086 }
4088 # Handle Python
4089 sub handle_python
4090 {
4091 my @pyfiles = &am_install_var ('-defaultdist', 'python', 'PYTHON',
4092 'noinst');
4093 return if ! @pyfiles;
4095 require_variables ($pyfiles[0][0], "Python sources seen", TRUE, 'PYTHON');
4096 require_conf_file ($pyfiles[0][0], FOREIGN, 'py-compile');
4097 &define_variable ('py_compile', $config_aux_dir . '/py-compile', INTERNAL);
4098 }
4100 # Handle Java.
4101 sub handle_java
4102 {
4103 my @sourcelist = &am_install_var ('-candist',
4104 'java', 'JAVA',
4105 'java', 'noinst', 'check');
4106 return if ! @sourcelist;
4108 my @prefix = am_primary_prefixes ('JAVA', 1,
4109 'java', 'noinst', 'check');
4111 my $dir;
4112 foreach my $curs (@prefix)
4113 {
4114 next
4115 if $curs eq 'EXTRA';
4117 err_var "${curs}_JAVA", "multiple _JAVA primaries in use"
4118 if defined $dir;
4119 $dir = $curs;
4120 }
4123 push (@all, 'class' . $dir . '.stamp');
4124 }
4127 # Handle some of the minor options.
4128 sub handle_minor_options
4129 {
4130 if (option 'readme-alpha')
4131 {
4132 if ($relative_dir eq '.')
4133 {
4134 if ($package_version !~ /^$GNITS_VERSION_PATTERN$/)
4135 {
4136 msg ('error-gnits', $package_version_location,
4137 "version `$package_version' doesn't follow " .
4138 "Gnits standards");
4139 }
4140 if (defined $1 && -f 'README-alpha')
4141 {
4142 # This means we have an alpha release. See
4143 # GNITS_VERSION_PATTERN for details.
4144 push_dist_common ('README-alpha');
4145 }
4146 }
4147 }
4148 }
4150 ################################################################
4152 # ($OUTPUT, @INPUTS)
4153 # &split_config_file_spec ($SPEC)
4154 # -------------------------------
4155 # Decode the Autoconf syntax for config files (files, headers, links
4156 # etc.).
4157 sub split_config_file_spec ($)
4158 {
4159 my ($spec) = @_;
4160 my ($output, @inputs) = split (/:/, $spec);
4162 push @inputs, "$output.in"
4163 unless @inputs;
4165 return ($output, @inputs);
4166 }
4169 my %make_list;
4171 # &scan_autoconf_config_files ($CONFIG-FILES)
4172 # -------------------------------------------
4173 # Study $CONFIG-FILES which is the first argument to AC_CONFIG_FILES
4174 # (or AC_OUTPUT).
4175 sub scan_autoconf_config_files ($)
4176 {
4177 my ($config_files) = @_;
4178 # Look at potential Makefile.am's.
4179 foreach (split ' ', $config_files)
4180 {
4181 # Must skip empty string for Perl 4.
4182 next if $_ eq "\\" || $_ eq '';
4184 # Handle $local:$input syntax. Note that we ignore
4185 # every input file past the first, though we keep
4186 # those around for later.
4187 my ($local, $input, @rest) = split (/:/);
4188 if (! $input)
4189 {
4190 $input = $local;
4191 }
4192 else
4193 {
4194 # FIXME: should be error if .in is missing.
4195 $input =~ s/\.in$//;
4196 }
4198 if (-f $input . '.am')
4199 {
4200 # We have a file that automake should generate.
4201 $make_list{$input} = join (':', ($local, @rest));
4202 }
4203 else
4204 {
4205 # We have a file that automake should cause to be
4206 # rebuilt, but shouldn't generate itself.
4207 push (@other_input_files, $_);
4208 }
4209 }
4210 }
4213 # &scan_autoconf_traces ($FILENAME)
4214 # ---------------------------------
4215 sub scan_autoconf_traces ($)
4216 {
4217 my ($filename) = @_;
4219 # Macros to trace, with their minimal number of arguments.
4220 my %traced = (
4221 AC_CANONICAL_HOST => 0,
4222 AC_CANONICAL_SYSTEM => 0,
4223 AC_CONFIG_AUX_DIR => 1,
4224 AC_CONFIG_FILES => 1,
4225 AC_CONFIG_HEADERS => 1,
4226 AC_CONFIG_LINKS => 1,
4227 AC_INIT => 0,
4228 AC_LIBSOURCE => 1,
4229 AC_SUBST => 1,
4230 AM_AUTOMAKE_VERSION => 1,
4231 AM_CONDITIONAL => 2,
4232 AM_ENABLE_MULTILIB => 0,
4233 AM_GNU_GETTEXT => 0,
4234 AM_INIT_AUTOMAKE => 0,
4235 AM_MAINTAINER_MODE => 0,
4236 AM_PROG_CC_C_O => 0,
4237 m4_include => 1,
4238 m4_sinclude => 1,
4239 );
4241 my $traces = ($ENV{AUTOCONF} || 'autoconf') . " ";
4243 # Use a separator unlikely to be used, not `:', the default, which
4244 # has a precise meaning for AC_CONFIG_FILES and so on.
4245 $traces .= join (' ',
4246 map { "--trace=$_" . ':\$f:\$l::\$n::\${::}%' }
4247 (keys %traced));
4249 my $tracefh = new Automake::XFile ("$traces $filename |");
4250 verb "reading $traces";
4252 while ($_ = $tracefh->getline)
4253 {
4254 chomp;
4255 my ($here, @args) = split /::/;
4256 my $where = new Automake::Location $here;
4257 my $macro = $args[0];
4259 prog_error ("unrequested trace `$macro'")
4260 unless exists $traced{$macro};
4262 # Skip and diagnose malformed calls.
4263 if ($#args < $traced{$macro})
4264 {
4265 msg ('syntax', $where, "not enough arguments for $macro");
4266 next;
4267 }
4269 # Alphabetical ordering please.
4270 if ($macro eq 'AC_CANONICAL_HOST')
4271 {
4272 if (! $seen_canonical)
4273 {
4274 $seen_canonical = AC_CANONICAL_HOST;
4275 $canonical_location = $where;
4276 }
4277 }
4278 elsif ($macro eq 'AC_CANONICAL_SYSTEM')
4279 {
4280 $seen_canonical = AC_CANONICAL_SYSTEM;
4281 $canonical_location = $where;
4282 }
4283 elsif ($macro eq 'AC_CONFIG_AUX_DIR')
4284 {
4285 @config_aux_path = $args[1];
4286 $config_aux_dir_set_in_configure_in = 1;
4287 }
4288 elsif ($macro eq 'AC_CONFIG_FILES')
4289 {
4290 # Look at potential Makefile.am's.
4291 $ac_config_files_location = $where;
4292 &scan_autoconf_config_files ($args[1]);
4293 }
4294 elsif ($macro eq 'AC_CONFIG_HEADERS')
4295 {
4296 $config_header_location = $where;
4297 push @config_headers, split (' ', $args[1]);
4298 }
4299 elsif ($macro eq 'AC_CONFIG_LINKS')
4300 {
4301 push @config_links, map { [$_, $where] } split (' ', $args[1]);
4302 }
4303 elsif ($macro eq 'AC_INIT')
4304 {
4305 if (defined $args[2])
4306 {
4307 $package_version = $args[2];
4308 $package_version_location = $where;
4309 }
4310 }
4311 elsif ($macro eq 'AC_LIBSOURCE')
4312 {
4313 $libsources{$args[1]} = $here;
4314 }
4315 elsif ($macro eq 'AC_SUBST')
4316 {
4317 # Just check for alphanumeric in AC_SUBST. If you do
4318 # AC_SUBST(5), then too bad.
4319 $configure_vars{$args[1]} = $where
4320 if $args[1] =~ /^\w+$/;
4321 }
4322 elsif ($macro eq 'AM_AUTOMAKE_VERSION')
4323 {
4324 error ($where,
4325 "version mismatch. This is Automake $VERSION,\n" .
4326 "but the definition used by this AM_INIT_AUTOMAKE\n" .
4327 "comes from Automake $args[1]. You should recreate\n" .
4328 "aclocal.m4 with aclocal and run automake again.\n")
4329 if $VERSION ne $args[1];
4331 $seen_automake_version = 1;
4332 }
4333 elsif ($macro eq 'AM_CONDITIONAL')
4334 {
4335 $configure_cond{$args[1]} = $where;
4336 }
4337 elsif ($macro eq 'AM_ENABLE_MULTILIB')
4338 {
4339 $seen_multilib = $where;
4340 }
4341 elsif ($macro eq 'AM_GNU_GETTEXT')
4342 {
4343 $seen_gettext = $where;
4344 $ac_gettext_location = $where;
4345 $seen_gettext_external = grep ($_ eq 'external', @args);
4346 }
4347 elsif ($macro eq 'AM_INIT_AUTOMAKE')
4348 {
4349 $seen_init_automake = $where;
4350 if (defined $args[2])
4351 {
4352 $package_version = $args[2];
4353 $package_version_location = $where;
4354 }
4355 elsif (defined $args[1])
4356 {
4357 exit $exit_code
4358 if (process_global_option_list ($where,
4359 split (' ', $args[1])));
4360 }
4361 }
4362 elsif ($macro eq 'AM_MAINTAINER_MODE')
4363 {
4364 $seen_maint_mode = $where;
4365 }
4366 elsif ($macro eq 'AM_PROG_CC_C_O')
4367 {
4368 $seen_cc_c_o = $where;
4369 }
4370 elsif ($macro eq 'm4_include' || $macro eq 'm4_sinclude')
4371 {
4372 # Some modified versions of Autoconf don't use
4373 # forzen files. Consequently it's possible that we see all
4374 # m4_include's performed during Autoconf's startup.
4375 # Obviously we don't want to distribute Autoconf's files
4376 # so we skip absolute filenames here.
4377 push @configure_deps, '$(top_srcdir)/' . $args[1]
4378 unless $here =~ m,^(?:\w:)?[\\/],;
4379 }
4380 }
4381 }
4384 # &scan_autoconf_files ()
4385 # -----------------------
4386 # Check whether we use `configure.ac' or `configure.in'.
4387 # Scan it (and possibly `aclocal.m4') for interesting things.
4388 # We must scan aclocal.m4 because there might be AC_SUBSTs and such there.
4389 sub scan_autoconf_files ()
4390 {
4391 # Reinitialize libsources here. This isn't really necessary,
4392 # since we currently assume there is only one configure.ac. But
4393 # that won't always be the case.
4394 %libsources = ();
4396 scan_autoconf_traces ($configure_ac);
4398 # Set input and output files if not specified by user.
4399 if (! @input_files)
4400 {
4401 @input_files = sort keys %make_list;
4402 %output_files = %make_list;
4403 }
4405 @configure_input_files = sort keys %make_list;
4407 if (! $seen_init_automake)
4408 {
4409 err_ac ("no proper invocation of AM_INIT_AUTOMAKE was found.\nYou "
4410 . "should verify that $configure_ac invokes AM_INIT_AUTOMAKE,"
4411 . "\nthat aclocal.m4 is present in the top-level directory,\n"
4412 . "and that aclocal.m4 was recently regenerated "
4413 . "(using aclocal).");
4414 }
4415 else
4416 {
4417 if (! $seen_automake_version)
4418 {
4419 if (-f 'aclocal.m4')
4420 {
4421 error ($seen_init_automake,
4422 "your implementation of AM_INIT_AUTOMAKE comes from " .
4423 "an\nold Automake version. You should recreate " .
4424 "aclocal.m4\nwith aclocal and run automake again.\n");
4425 }
4426 else
4427 {
4428 error ($seen_init_automake,
4429 "no proper implementation of AM_INIT_AUTOMAKE was " .
4430 "found,\nprobably because aclocal.m4 is missing...\n" .
4431 "You should run aclocal to create this file, then\n" .
4432 "run automake again.\n");
4433 }
4434 }
4435 }
4437 # Look for some files we need. Always check for these. This
4438 # check must be done for every run, even those where we are only
4439 # looking at a subdir Makefile. We must set relative_dir so that
4440 # the file-finding machinery works.
4441 # FIXME: Is this broken because it needs dynamic scopes.
4442 # My tests seems to show it's not the case.
4443 $relative_dir = '.';
4444 require_conf_file ($configure_ac, FOREIGN,
4445 'install-sh', 'mkinstalldirs', 'missing');
4446 err_am "`install.sh' is an anachronism; use `install-sh' instead"
4447 if -f $config_aux_path[0] . '/install.sh';
4449 # Preserve dist_common for later.
4450 $configure_dist_common = variable_value ('DIST_COMMON') || '';
4451 }
4453 ################################################################
4455 # Set up for Cygnus mode.
4456 sub check_cygnus
4457 {
4458 my $cygnus = option 'cygnus';
4459 return unless $cygnus;
4461 set_strictness ('foreign');
4462 set_option ('no-installinfo', $cygnus);
4463 set_option ('no-dependencies', $cygnus);
4465 err_ac "`AM_MAINTAINER_MODE' required when --cygnus specified"
4466 if !$seen_maint_mode;
4467 }
4469 # Do any extra checking for GNU standards.
4470 sub check_gnu_standards
4471 {
4472 if ($relative_dir eq '.')
4473 {
4474 # In top level (or only) directory.
4476 # Accept one of these three licenses; default to COPYING.
4477 my $license = 'COPYING';
4478 foreach (qw /COPYING.LIB COPYING.LESSER/)
4479 {
4480 $license = $_ if -f $_;
4481 }
4482 require_file ("$am_file.am", GNU, $license,
4483 qw/INSTALL NEWS README AUTHORS ChangeLog/);
4484 }
4486 for my $opt ('no-installman', 'no-installinfo')
4487 {
4488 msg ('error-gnu', option $opt,
4489 "option `$opt' disallowed by GNU standards")
4490 if option $opt;
4491 }
4492 }
4494 # Do any extra checking for GNITS standards.
4495 sub check_gnits_standards
4496 {
4497 if ($relative_dir eq '.')
4498 {
4499 # In top level (or only) directory.
4500 require_file ("$am_file.am", GNITS, 'THANKS');
4501 }
4502 }
4504 ################################################################
4505 #
4506 # Functions to handle files of each language.
4508 # Each `lang_X_rewrite($DIRECTORY, $BASE, $EXT)' function follows a
4509 # simple formula: Return value is LANG_SUBDIR if the resulting object
4510 # file should be in a subdir if the source file is, LANG_PROCESS if
4511 # file is to be dealt with, LANG_IGNORE otherwise.
4513 # Much of the actual processing is handled in
4514 # handle_single_transform_list. These functions exist so that
4515 # auxiliary information can be recorded for a later cleanup pass.
4516 # Note that the calls to these functions are computed, so don't bother
4517 # searching for their precise names in the source.
4519 # This is just a convenience function that can be used to determine
4520 # when a subdir object should be used.
4521 sub lang_sub_obj
4522 {
4523 return option 'subdir-objects' ? LANG_SUBDIR : LANG_PROCESS;
4524 }
4526 # Rewrite a single C source file.
4527 sub lang_c_rewrite
4528 {
4529 my ($directory, $base, $ext) = @_;
4531 if (option 'ansi2knr' && $base =~ /_$/)
4532 {
4533 # FIXME: include line number in error.
4534 err_am "C source file `$base.c' would be deleted by ansi2knr rules";
4535 }
4537 my $r = LANG_PROCESS;
4538 if (option 'subdir-objects')
4539 {
4540 $r = LANG_SUBDIR;
4541 $base = $directory . '/' . $base
4542 unless $directory eq '.' || $directory eq '';
4544 err_am ("C objects in subdir but `AM_PROG_CC_C_O' "
4545 . "not in `$configure_ac'",
4546 uniq_scope => US_GLOBAL)
4547 unless $seen_cc_c_o;
4549 require_conf_file ("$am_file.am", FOREIGN, 'compile');
4551 # In this case we already have the directory information, so
4552 # don't add it again.
4553 $de_ansi_files{$base} = '';
4554 }
4555 else
4556 {
4557 $de_ansi_files{$base} = (($directory eq '.' || $directory eq '')
4558 ? ''
4559 : "$directory/");
4560 }
4562 return $r;
4563 }
4565 # Rewrite a single C++ source file.
4566 sub lang_cxx_rewrite
4567 {
4568 return &lang_sub_obj;
4569 }
4571 # Rewrite a single header file.
4572 sub lang_header_rewrite
4573 {
4574 # Header files are simply ignored.
4575 return LANG_IGNORE;
4576 }
4578 # Rewrite a single yacc file.
4579 sub lang_yacc_rewrite
4580 {
4581 my ($directory, $base, $ext) = @_;
4583 my $r = &lang_sub_obj;
4584 (my $newext = $ext) =~ tr/y/c/;
4585 return ($r, $newext);
4586 }
4588 # Rewrite a single yacc++ file.
4589 sub lang_yaccxx_rewrite
4590 {
4591 my ($directory, $base, $ext) = @_;
4593 my $r = &lang_sub_obj;
4594 (my $newext = $ext) =~ tr/y/c/;
4595 return ($r, $newext);
4596 }
4598 # Rewrite a single lex file.
4599 sub lang_lex_rewrite
4600 {
4601 my ($directory, $base, $ext) = @_;
4603 my $r = &lang_sub_obj;
4604 (my $newext = $ext) =~ tr/l/c/;
4605 return ($r, $newext);
4606 }
4608 # Rewrite a single lex++ file.
4609 sub lang_lexxx_rewrite
4610 {
4611 my ($directory, $base, $ext) = @_;
4613 my $r = &lang_sub_obj;
4614 (my $newext = $ext) =~ tr/l/c/;
4615 return ($r, $newext);
4616 }
4618 # Rewrite a single assembly file.
4619 sub lang_asm_rewrite
4620 {
4621 return &lang_sub_obj;
4622 }
4624 # Rewrite a single Fortran 77 file.
4625 sub lang_f77_rewrite
4626 {
4627 return LANG_PROCESS;
4628 }
4630 # Rewrite a single preprocessed Fortran 77 file.
4631 sub lang_ppf77_rewrite
4632 {
4633 return LANG_PROCESS;
4634 }
4636 # Rewrite a single ratfor file.
4637 sub lang_ratfor_rewrite
4638 {
4639 return LANG_PROCESS;
4640 }
4642 # Rewrite a single Objective C file.
4643 sub lang_objc_rewrite
4644 {
4645 return &lang_sub_obj;
4646 }
4648 # Rewrite a single Java file.
4649 sub lang_java_rewrite
4650 {
4651 return LANG_SUBDIR;
4652 }
4654 # The lang_X_finish functions are called after all source file
4655 # processing is done. Each should handle defining rules for the
4656 # language, etc. A finish function is only called if a source file of
4657 # the appropriate type has been seen.
4659 sub lang_c_finish
4660 {
4661 # Push all libobjs files onto de_ansi_files. We actually only
4662 # push files which exist in the current directory, and which are
4663 # genuine source files.
4664 foreach my $file (keys %libsources)
4665 {
4666 if ($file =~ /^(.*)\.[cly]$/ && -f "$relative_dir/$file")
4667 {
4668 $de_ansi_files{$1} = ''
4669 }
4670 }
4672 if (option 'ansi2knr' && keys %de_ansi_files)
4673 {
4674 # Make all _.c files depend on their corresponding .c files.
4675 my @objects;
4676 foreach my $base (sort keys %de_ansi_files)
4677 {
4678 # Each _.c file must depend on ansi2knr; otherwise it
4679 # might be used in a parallel build before it is built.
4680 # We need to support files in the srcdir and in the build
4681 # dir (because these files might be auto-generated. But
4682 # we can't use $< -- some makes only define $< during a
4683 # suffix rule.
4684 my $ansfile = $de_ansi_files{$base} . $base . '.c';
4685 $output_rules .= ($base . "_.c: $ansfile \$(ANSI2KNR)\n\t"
4686 . '$(CPP) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS) $(CPPFLAGS) '
4687 . '`if test -f $(srcdir)/' . $ansfile
4688 . '; then echo $(srcdir)/' . $ansfile
4689 . '; else echo ' . $ansfile . '; fi` '
4690 . "| sed 's/^# \\([0-9]\\)/#line \\1/' "
4691 . '| $(ANSI2KNR) > $@'
4692 # If ansi2knr fails then we shouldn't
4693 # create the _.c file
4694 . " || rm -f \$\@\n");
4695 push (@objects, $base . '_.$(OBJEXT)');
4696 push (@objects, $base . '_.lo')
4697 if var ('LIBTOOL');
4698 }
4700 # Make all _.o (and _.lo) files depend on ansi2knr.
4701 # Use a sneaky little hack to make it print nicely.
4702 &pretty_print_rule ('', '', @objects, ':', '$(ANSI2KNR)');
4703 }
4704 }
4706 # This is a yacc helper which is called whenever we have decided to
4707 # compile a yacc file.
4708 sub lang_yacc_target_hook
4709 {
4710 my ($self, $aggregate, $output, $input) = @_;
4712 my $flag = $aggregate . "_YFLAGS";
4713 my $flagvar = var $flag;
4714 my $YFLAGSvar = var 'YFLAGS';
4715 if (($flagvar && $flagvar->variable_value =~ /$DASH_D_PATTERN/o)
4716 || ($YFLAGSvar && $YFLAGSvar->variable_value =~ /$DASH_D_PATTERN/o))
4717 {
4718 (my $output_base = $output) =~ s/$KNOWN_EXTENSIONS_PATTERN$//;
4719 my $header = $output_base . '.h';
4721 # Found a `-d' that applies to the compilation of this file.
4722 # Add a dependency for the generated header file, and arrange
4723 # for that file to be included in the distribution.
4724 # FIXME: this fails for `nodist_*_SOURCES'.
4725 $output_rules .= ("${header}: $output\n"
4726 # Recover from removal of $header
4727 . "\t\@if test ! -f \$@; then \\\n"
4728 . "\t rm -f $output; \\\n"
4729 . "\t \$(MAKE) $output; \\\n"
4730 . "\telse :; fi\n");
4731 &push_dist_common ($header);
4732 # If the files are built in the build directory, then we want
4733 # to remove them with `make clean'. If they are in srcdir
4734 # they shouldn't be touched. However, we can't determine this
4735 # statically, and the GNU rules say that yacc/lex output files
4736 # should be removed by maintainer-clean. So that's what we
4737 # do.
4738 $clean_files{$header} = MAINTAINER_CLEAN;
4739 }
4740 # Erase $OUTPUT on `make maintainer-clean' (by GNU standards).
4741 # See the comment above for $HEADER.
4742 $clean_files{$output} = MAINTAINER_CLEAN;
4743 }
4745 # This is a lex helper which is called whenever we have decided to
4746 # compile a lex file.
4747 sub lang_lex_target_hook
4748 {
4749 my ($self, $aggregate, $output, $input) = @_;
4750 # If the files are built in the build directory, then we want to
4751 # remove them with `make clean'. If they are in srcdir they
4752 # shouldn't be touched. However, we can't determine this
4753 # statically, and the GNU rules say that yacc/lex output files
4754 # should be removed by maintainer-clean. So that's what we do.
4755 $clean_files{$output} = MAINTAINER_CLEAN;
4756 }
4758 # This is a helper for both lex and yacc.
4759 sub yacc_lex_finish_helper
4760 {
4761 return if defined $language_scratch{'lex-yacc-done'};
4762 $language_scratch{'lex-yacc-done'} = 1;
4764 # If there is more than one distinct yacc (resp lex) source file
4765 # in a given directory, then the `ylwrap' program is required to
4766 # allow parallel builds to work correctly. FIXME: for now, no
4767 # line number.
4768 require_conf_file ($configure_ac, FOREIGN, 'ylwrap');
4769 if ($config_aux_dir_set_in_configure_in)
4770 {
4771 &define_variable ('YLWRAP', $config_aux_dir . "/ylwrap", INTERNAL);
4772 }
4773 else
4774 {
4775 &define_variable ('YLWRAP', '$(top_srcdir)/ylwrap', INTERNAL);
4776 }
4777 }
4779 sub lang_yacc_finish
4780 {
4781 return if defined $language_scratch{'yacc-done'};
4782 $language_scratch{'yacc-done'} = 1;
4784 reject_var 'YACCFLAGS', "`YACCFLAGS' obsolete; use `YFLAGS' instead";
4786 &yacc_lex_finish_helper
4787 if count_files_for_language ('yacc') > 1;
4788 }
4791 sub lang_lex_finish
4792 {
4793 return if defined $language_scratch{'lex-done'};
4794 $language_scratch{'lex-done'} = 1;
4796 &yacc_lex_finish_helper
4797 if count_files_for_language ('lex') > 1;
4798 }
4801 # Given a hash table of linker names, pick the name that has the most
4802 # precedence. This is lame, but something has to have global
4803 # knowledge in order to eliminate the conflict. Add more linkers as
4804 # required.
4805 sub resolve_linker
4806 {
4807 my (%linkers) = @_;
4809 foreach my $l (qw(GCJLINK CXXLINK F77LINK OBJCLINK))
4810 {
4811 return $l if defined $linkers{$l};
4812 }
4813 return 'LINK';
4814 }
4816 # Called to indicate that an extension was used.
4817 sub saw_extension
4818 {
4819 my ($ext) = @_;
4820 if (! defined $extension_seen{$ext})
4821 {
4822 $extension_seen{$ext} = 1;
4823 }
4824 else
4825 {
4826 ++$extension_seen{$ext};
4827 }
4828 }
4830 # Return the number of files seen for a given language. Knows about
4831 # special cases we care about. FIXME: this is hideous. We need
4832 # something that involves real language objects. For instance yacc
4833 # and yaccxx could both derive from a common yacc class which would
4834 # know about the strange ylwrap requirement. (Or better yet we could
4835 # just not support legacy yacc!)
4836 sub count_files_for_language
4837 {
4838 my ($name) = @_;
4840 my @names;
4841 if ($name eq 'yacc' || $name eq 'yaccxx')
4842 {
4843 @names = ('yacc', 'yaccxx');
4844 }
4845 elsif ($name eq 'lex' || $name eq 'lexxx')
4846 {
4847 @names = ('lex', 'lexxx');
4848 }
4849 else
4850 {
4851 @names = ($name);
4852 }
4854 my $r = 0;
4855 foreach $name (@names)
4856 {
4857 my $lang = $languages{$name};
4858 foreach my $ext (@{$lang->extensions})
4859 {
4860 $r += $extension_seen{$ext}
4861 if defined $extension_seen{$ext};
4862 }
4863 }
4865 return $r
4866 }
4868 # Called to ask whether source files have been seen . If HEADERS is 1,
4869 # headers can be included.
4870 sub saw_sources_p
4871 {
4872 my ($headers) = @_;
4874 # count all the sources
4875 my $count = 0;
4876 foreach my $val (values %extension_seen)
4877 {
4878 $count += $val;
4879 }
4881 if (!$headers)
4882 {
4883 $count -= count_files_for_language ('header');
4884 }
4886 return $count > 0;
4887 }
4890 # register_language (%ATTRIBUTE)
4891 # ------------------------------
4892 # Register a single language.
4893 # Each %ATTRIBUTE is of the form ATTRIBUTE => VALUE.
4894 sub register_language (%)
4895 {
4896 my (%option) = @_;
4898 # Set the defaults.
4899 $option{'ansi'} = 0
4900 unless defined $option{'ansi'};
4901 $option{'autodep'} = 'no'
4902 unless defined $option{'autodep'};
4903 $option{'linker'} = ''
4904 unless defined $option{'linker'};
4905 $option{'flags'} = []
4906 unless defined $option{'flags'};
4907 $option{'output_extensions'} = sub { return ( '.$(OBJEXT)', '.lo' ) }
4908 unless defined $option{'output_extensions'};
4910 my $lang = new Language (%option);
4912 # Fill indexes.
4913 $extension_map{$_} = $lang->name foreach @{$lang->extensions};
4914 $languages{$lang->name} = $lang;
4916 # Update the pattern of known extensions.
4917 accept_extensions (@{$lang->extensions});
4919 # Upate the $suffix_rule map.
4920 foreach my $suffix (@{$lang->extensions})
4921 {
4922 foreach my $dest (&{$lang->output_extensions} ($suffix))
4923 {
4924 register_suffix_rule (INTERNAL, $suffix, $dest);
4925 }
4926 }
4927 }
4929 # derive_suffix ($EXT, $OBJ)
4930 # --------------------------
4931 # This function is used to find a path from a user-specified suffix $EXT
4932 # to $OBJ or to some other suffix we recognize internally, e.g. `cc'.
4933 sub derive_suffix ($$)
4934 {
4935 my ($source_ext, $obj) = @_;
4937 while (! $extension_map{$source_ext}
4938 && $source_ext ne $obj
4939 && exists $suffix_rules->{$source_ext}
4940 && exists $suffix_rules->{$source_ext}{$obj})
4941 {
4942 $source_ext = $suffix_rules->{$source_ext}{$obj}[0];
4943 }
4945 return $source_ext;
4946 }
4949 ################################################################
4951 # Pretty-print something and append to output_rules.
4952 sub pretty_print_rule
4953 {
4954 $output_rules .= &makefile_wrap (@_);
4955 }
4958 ################################################################
4961 ## -------------------------------- ##
4962 ## Handling the conditional stack. ##
4963 ## -------------------------------- ##
4966 # $STRING
4967 # make_conditional_string ($NEGATE, $COND)
4968 # ----------------------------------------
4969 sub make_conditional_string ($$)
4970 {
4971 my ($negate, $cond) = @_;
4972 $cond = "${cond}_TRUE"
4973 unless $cond =~ /^TRUE|FALSE$/;
4974 $cond = Automake::Condition::conditional_negate ($cond)
4975 if $negate;
4976 return $cond;
4977 }
4980 # $COND
4981 # cond_stack_if ($NEGATE, $COND, $WHERE)
4982 # --------------------------------------
4983 sub cond_stack_if ($$$)
4984 {
4985 my ($negate, $cond, $where) = @_;
4987 error $where, "$cond does not appear in AM_CONDITIONAL"
4988 if ! $configure_cond{$cond} && $cond !~ /^TRUE|FALSE$/;
4990 push (@cond_stack, make_conditional_string ($negate, $cond));
4992 return new Automake::Condition (@cond_stack);
4993 }
4996 # $COND
4997 # cond_stack_else ($NEGATE, $COND, $WHERE)
4998 # ----------------------------------------
4999 sub cond_stack_else ($$$)
5000 {
5001 my ($negate, $cond, $where) = @_;
5003 if (! @cond_stack)
5004 {
5005 error $where, "else without if";
5006 return FALSE;
5007 }
5009 $cond_stack[$#cond_stack] =
5010 Automake::Condition::conditional_negate ($cond_stack[$#cond_stack]);
5012 # If $COND is given, check against it.
5013 if (defined $cond)
5014 {
5015 $cond = make_conditional_string ($negate, $cond);
5017 error ($where, "else reminder ($negate$cond) incompatible with "
5018 . "current conditional: $cond_stack[$#cond_stack]")
5019 if $cond_stack[$#cond_stack] ne $cond;
5020 }
5022 return new Automake::Condition (@cond_stack);
5023 }
5026 # $COND
5027 # cond_stack_endif ($NEGATE, $COND, $WHERE)
5028 # -----------------------------------------
5029 sub cond_stack_endif ($$$)
5030 {
5031 my ($negate, $cond, $where) = @_;
5032 my $old_cond;
5034 if (! @cond_stack)
5035 {
5036 error $where, "endif without if";
5037 return TRUE;
5038 }
5040 # If $COND is given, check against it.
5041 if (defined $cond)
5042 {
5043 $cond = make_conditional_string ($negate, $cond);
5045 error ($where, "endif reminder ($negate$cond) incompatible with "
5046 . "current conditional: $cond_stack[$#cond_stack]")
5047 if $cond_stack[$#cond_stack] ne $cond;
5048 }
5050 pop @cond_stack;
5052 return new Automake::Condition (@cond_stack);
5053 }
5059 ## ------------------------ ##
5060 ## Handling the variables. ##
5061 ## ------------------------ ##
5064 # &define_pretty_variable ($VAR, $COND, $WHERE, @VALUE)
5065 # -----------------------------------------------------
5066 # Like define_variable, but the value is a list, and the variable may
5067 # be defined conditionally. The second argument is the Condition
5068 # under which the value should be defined; this should be the empty
5069 # string to define the variable unconditionally. The third argument
5070 # is a list holding the values to use for the variable. The value is
5071 # pretty printed in the output file.
5072 sub define_pretty_variable ($$$@)
5073 {
5074 my ($var, $cond, $where, @value) = @_;
5076 if (! vardef ($var, $cond))
5077 {
5078 Automake::Variable::define ($var, VAR_AUTOMAKE, '', $cond, "@value",
5079 '', $where, VAR_PRETTY);
5080 rvar ($var)->rdef ($cond)->set_seen;
5081 }
5082 }
5085 # define_variable ($VAR, $VALUE, $WHERE)
5086 # --------------------------------------
5087 # Define a new user variable VAR to VALUE, but only if not already defined.
5088 sub define_variable ($$$)
5089 {
5090 my ($var, $value, $where) = @_;
5091 define_pretty_variable ($var, TRUE, $where, $value);
5092 }
5095 # define_files_variable ($VAR, \@BASENAME, $EXTENSION, $WHERE)
5096 # -----------------------------------------------------------
5097 # Define the $VAR which content is the list of file names composed of
5098 # a @BASENAME and the $EXTENSION.
5099 sub define_files_variable ($\@$$)
5100 {
5101 my ($var, $basename, $extension, $where) = @_;
5102 define_variable ($var,
5103 join (' ', map { "$_.$extension" } @$basename),
5104 $where);
5105 }
5108 # Like define_variable, but define a variable to be the configure
5109 # substitution by the same name.
5110 sub define_configure_variable ($)
5111 {
5112 my ($var) = @_;
5114 my $pretty = VAR_ASIS;
5115 my $owner = VAR_CONFIGURE;
5117 # Do not output the ANSI2KNR configure variable -- we AC_SUBST
5118 # it in protos.m4, but later redefine it elsewhere. This is
5119 # pretty hacky. We also don't output AMDEPBACKSLASH: it might
5120 # be subst'd by `\', which certainly would not be appreciated by
5121 # Make.
5122 if ($var eq 'ANSI2KNR' || $var eq 'AMDEPBACKSLASH')
5123 {
5124 $pretty = VAR_SILENT;
5125 $owner = VAR_AUTOMAKE;
5126 }
5128 Automake::Variable::define ($var, $owner, '', TRUE, subst $var,
5129 '', $configure_vars{$var}, $pretty);
5130 }
5133 # define_compiler_variable ($LANG)
5134 # --------------------------------
5135 # Define a compiler variable. We also handle defining the `LT'
5136 # version of the command when using libtool.
5137 sub define_compiler_variable ($)
5138 {
5139 my ($lang) = @_;
5141 my ($var, $value) = ($lang->compiler, $lang->compile);
5142 &define_variable ($var, $value, INTERNAL);
5143 &define_variable ("LT$var", "\$(LIBTOOL) --mode=compile $value", INTERNAL)
5144 if var ('LIBTOOL');
5145 }
5148 # define_linker_variable ($LANG)
5149 # ------------------------------
5150 # Define linker variables.
5151 sub define_linker_variable ($)
5152 {
5153 my ($lang) = @_;
5155 my ($var, $value) = ($lang->lder, $lang->ld);
5156 # CCLD = $(CC).
5157 &define_variable ($lang->lder, $lang->ld, INTERNAL);
5158 # CCLINK = $(CCLD) blah blah...
5159 &define_variable ($lang->linker,
5160 ((var ('LIBTOOL') ? '$(LIBTOOL) --mode=link ' : '')
5161 . $lang->link),
5162 INTERNAL);
5163 }
5165 ################################################################
5167 # &check_trailing_slash ($WHERE, $LINE)
5168 # --------------------------------------
5169 # Return 1 iff $LINE ends with a slash.
5170 # Might modify $LINE.
5171 sub check_trailing_slash ($\$)
5172 {
5173 my ($where, $line) = @_;
5175 # Ignore `##' lines.
5176 return 0 if $$line =~ /$IGNORE_PATTERN/o;
5178 # Catch and fix a common error.
5179 msg "syntax", $where, "whitespace following trailing backslash"
5180 if $$line =~ s/\\\s+\n$/\\\n/;
5182 return $$line =~ /\\$/;
5183 }
5186 # &read_am_file ($AMFILE, $WHERE)
5187 # -------------------------------
5188 # Read Makefile.am and set up %contents. Simultaneously copy lines
5189 # from Makefile.am into $output_trailer, or define variables as
5190 # appropriate. NOTE we put rules in the trailer section. We want
5191 # user rules to come after our generated stuff.
5192 sub read_am_file ($$)
5193 {
5194 my ($amfile, $where) = @_;
5196 my $am_file = new Automake::XFile ("< $amfile");
5197 verb "reading $amfile";
5199 my $spacing = '';
5200 my $comment = '';
5201 my $blank = 0;
5202 my $saw_bk = 0;
5204 use constant IN_VAR_DEF => 0;
5205 use constant IN_RULE_DEF => 1;
5206 use constant IN_COMMENT => 2;
5207 my $prev_state = IN_RULE_DEF;
5209 while ($_ = $am_file->getline)
5210 {
5211 $where->set ("$amfile:$.");
5212 if (/$IGNORE_PATTERN/o)
5213 {
5214 # Merely delete comments beginning with two hashes.
5215 }
5216 elsif (/$WHITE_PATTERN/o)
5217 {
5218 error $where, "blank line following trailing backslash"
5219 if $saw_bk;
5220 # Stick a single white line before the incoming macro or rule.
5221 $spacing = "\n";
5222 $blank = 1;
5223 # Flush all comments seen so far.
5224 if ($comment ne '')
5225 {
5226 $output_vars .= $comment;
5227 $comment = '';
5228 }
5229 }
5230 elsif (/$COMMENT_PATTERN/o)
5231 {
5232 # Stick comments before the incoming macro or rule. Make
5233 # sure a blank line preceeds first block of comments.
5234 $spacing = "\n" unless $blank;
5235 $blank = 1;
5236 $comment .= $spacing . $_;
5237 $spacing = '';
5238 $prev_state = IN_COMMENT;
5239 }
5240 else
5241 {
5242 last;
5243 }
5244 $saw_bk = check_trailing_slash ($where, $_);
5245 }
5247 # We save the conditional stack on entry, and then check to make
5248 # sure it is the same on exit. This lets us conditonally include
5249 # other files.
5250 my @saved_cond_stack = @cond_stack;
5251 my $cond = new Automake::Condition (@cond_stack);
5253 my $last_var_name = '';
5254 my $last_var_type = '';
5255 my $last_var_value = '';
5256 my $last_where;
5257 # FIXME: shouldn't use $_ in this loop; it is too big.
5258 while ($_)
5259 {
5260 $where->set ("$amfile:$.");
5262 # Make sure the line is \n-terminated.
5263 chomp;
5264 $_ .= "\n";
5266 # Don't look at MAINTAINER_MODE_TRUE here. That shouldn't be
5267 # used by users. @MAINT@ is an anachronism now.
5268 $_ =~ s/\@MAINT\@//g
5269 unless $seen_maint_mode;
5271 my $new_saw_bk = check_trailing_slash ($where, $_);
5273 if (/$IGNORE_PATTERN/o)
5274 {
5275 # Merely delete comments beginning with two hashes.
5276 }
5277 elsif (/$WHITE_PATTERN/o)
5278 {
5279 # Stick a single white line before the incoming macro or rule.
5280 $spacing = "\n";
5281 error $where, "blank line following trailing backslash"
5282 if $saw_bk;
5283 }
5284 elsif (/$COMMENT_PATTERN/o)
5285 {
5286 # Stick comments before the incoming macro or rule.
5287 $comment .= $spacing . $_;
5288 $spacing = '';
5289 error $where, "comment following trailing backslash"
5290 if $saw_bk && $comment eq '';
5291 $prev_state = IN_COMMENT;
5292 }
5293 elsif ($saw_bk)
5294 {
5295 if ($prev_state == IN_RULE_DEF)
5296 {
5297 my $cond = new Automake::Condition @cond_stack;
5298 $output_trailer .= $cond->subst_string;
5299 $output_trailer .= $_;
5300 }
5301 elsif ($prev_state == IN_COMMENT)
5302 {
5303 # If the line doesn't start with a `#', add it.
5304 # We do this because a continuated comment like
5305 # # A = foo \
5306 # bar \
5307 # baz
5308 # is not portable. BSD make doesn't honor
5309 # escaped newlines in comments.
5310 s/^#?/#/;
5311 $comment .= $spacing . $_;
5312 }
5313 else # $prev_state == IN_VAR_DEF
5314 {
5315 $last_var_value .= ' '
5316 unless $last_var_value =~ /\s$/;
5317 $last_var_value .= $_;
5319 if (!/\\$/)
5320 {
5321 Automake::Variable::define ($last_var_name, VAR_MAKEFILE,
5322 $last_var_type, $cond,
5323 $last_var_value, $comment,
5324 $last_where, VAR_ASIS)
5325 if $cond != FALSE;
5326 $comment = $spacing = '';
5327 }
5328 }
5329 }
5331 elsif (/$IF_PATTERN/o)
5332 {
5333 $cond = cond_stack_if ($1, $2, $where);
5334 }
5335 elsif (/$ELSE_PATTERN/o)
5336 {
5337 $cond = cond_stack_else ($1, $2, $where);
5338 }
5339 elsif (/$ENDIF_PATTERN/o)
5340 {
5341 $cond = cond_stack_endif ($1, $2, $where);
5342 }
5344 elsif (/$RULE_PATTERN/o)
5345 {
5346 # Found a rule.
5347 $prev_state = IN_RULE_DEF;
5349 # For now we have to output all definitions of user rules
5350 # and can't diagnose duplicates (see the comment in
5351 # rule_define). So we go on and ignore the return value.
5352 Automake::Rule::define ($1, $amfile, RULE_USER, $cond, $where);
5354 check_variable_expansions ($_, $where);
5356 $output_trailer .= $comment . $spacing;
5357 my $cond = new Automake::Condition @cond_stack;
5358 $output_trailer .= $cond->subst_string;
5359 $output_trailer .= $_;
5360 $comment = $spacing = '';
5361 }
5362 elsif (/$ASSIGNMENT_PATTERN/o)
5363 {
5364 # Found a macro definition.
5365 $prev_state = IN_VAR_DEF;
5366 $last_var_name = $1;
5367 $last_var_type = $2;
5368 $last_var_value = $3;
5369 $last_where = $where->clone;
5370 if ($3 ne '' && substr ($3, -1) eq "\\")
5371 {
5372 # We preserve the `\' because otherwise the long lines
5373 # that are generated will be truncated by broken
5374 # `sed's.
5375 $last_var_value = $3 . "\n";
5376 }
5378 if (!/\\$/)
5379 {
5380 Automake::Variable::define ($last_var_name, VAR_MAKEFILE,
5381 $last_var_type, $cond,
5382 $last_var_value, $comment,
5383 $last_where, VAR_ASIS)
5384 if $cond != FALSE;
5385 $comment = $spacing = '';
5386 }
5387 }
5388 elsif (/$INCLUDE_PATTERN/o)
5389 {
5390 my $path = $1;
5392 if ($path =~ s/^\$\(top_srcdir\)\///)
5393 {
5394 push (@include_stack, "\$\(top_srcdir\)/$path");
5395 # Distribute any included file.
5397 # Always use the $(top_srcdir) prefix in DIST_COMMON,
5398 # otherwise OSF make will implicitely copy the included
5399 # file in the build tree during `make distdir' to satisfy
5400 # the dependency.
5401 # (subdircond2.test and subdircond3.test will fail.)
5402 push_dist_common ("\$\(top_srcdir\)/$path");
5403 }
5404 else
5405 {
5406 $path =~ s/\$\(srcdir\)\///;
5407 push (@include_stack, "\$\(srcdir\)/$path");
5408 # Always use the $(srcdir) prefix in DIST_COMMON,
5409 # otherwise OSF make will implicitely copy the included
5410 # file in the build tree during `make distdir' to satisfy
5411 # the dependency.
5412 # (subdircond2.test and subdircond3.test will fail.)
5413 push_dist_common ("\$\(srcdir\)/$path");
5414 $path = $relative_dir . "/" . $path if $relative_dir ne '.';
5415 }
5416 $where->push_context ("`$path' included from here");
5417 &read_am_file ($path, $where);
5418 $where->pop_context;
5419 }
5420 else
5421 {
5422 # This isn't an error; it is probably a continued rule.
5423 # In fact, this is what we assume.
5424 $prev_state = IN_RULE_DEF;
5425 check_variable_expansions ($_, $where);
5426 $output_trailer .= $comment . $spacing;
5427 my $cond = new Automake::Condition @cond_stack;
5428 $output_trailer .= $cond->subst_string;
5429 $output_trailer .= $_;
5430 $comment = $spacing = '';
5431 error $where, "`#' comment at start of rule is unportable"
5432 if $_ =~ /^\t\s*\#/;
5433 }
5435 $saw_bk = $new_saw_bk;
5436 $_ = $am_file->getline;
5437 }
5439 $output_trailer .= $comment;
5441 error ($where, "trailing backslash on last line")
5442 if $saw_bk;
5444 error ($where, (@cond_stack ? "unterminated conditionals: @cond_stack"
5445 : "too many conditionals closed in include file"))
5446 if "@saved_cond_stack" ne "@cond_stack";
5447 }
5450 # define_standard_variables ()
5451 # ----------------------------
5452 # A helper for read_main_am_file which initializes configure variables
5453 # and variables from header-vars.am.
5454 sub define_standard_variables
5455 {
5456 my $saved_output_vars = $output_vars;
5457 my ($comments, undef, $rules) =
5458 file_contents_internal (1, "$libdir/am/header-vars.am",
5459 new Automake::Location);
5461 foreach my $var (sort keys %configure_vars)
5462 {
5463 &define_configure_variable ($var);
5464 }
5466 $output_vars .= $comments . $rules;
5467 }
5469 # Read main am file.
5470 sub read_main_am_file
5471 {
5472 my ($amfile) = @_;
5474 # This supports the strange variable tricks we are about to play.
5475 prog_error (macros_dump () . "variable defined before read_main_am_file")
5476 if (scalar (variables) > 0);
5478 # Generate copyright header for generated Makefile.in.
5479 # We do discard the output of predefined variables, handled below.
5480 $output_vars = ("# $in_file_name generated by automake "
5481 . $VERSION . " from $am_file_name.\n");
5482 $output_vars .= '# ' . subst ('configure_input') . "\n";
5483 $output_vars .= $gen_copyright;
5485 # We want to predefine as many variables as possible. This lets
5486 # the user set them with `+=' in Makefile.am.
5487 &define_standard_variables;
5489 # Read user file, which might override some of our values.
5490 &read_am_file ($amfile, new Automake::Location);
5491 }
5495 ################################################################
5497 # $FLATTENED
5498 # &flatten ($STRING)
5499 # ------------------
5500 # Flatten the $STRING and return the result.
5501 sub flatten
5502 {
5503 $_ = shift;
5505 s/\\\n//somg;
5506 s/\s+/ /g;
5507 s/^ //;
5508 s/ $//;
5510 return $_;
5511 }
5514 # @PARAGRAPHS
5515 # &make_paragraphs ($MAKEFILE, [%TRANSFORM])
5516 # ------------------------------------------
5517 # Load a $MAKEFILE, apply the %TRANSFORM, and return it as a list of
5518 # paragraphs.
5519 sub make_paragraphs ($%)
5520 {
5521 my ($file, %transform) = @_;
5523 # Complete %transform with global options and make it a Perl
5524 # $command.
5525 my $command =
5526 "s/$IGNORE_PATTERN//gm;"
5527 . transform (%transform,
5528 'CYGNUS' => !! option 'cygnus',
5529 'MAINTAINER-MODE'
5530 => $seen_maint_mode ? subst ('MAINTAINER_MODE_TRUE') : '',
5532 'BZIP2' => !! option 'dist-bzip2',
5533 'COMPRESS' => !! option 'dist-tarZ',
5534 'GZIP' => ! option 'no-dist-gzip',
5535 'SHAR' => !! option 'dist-shar',
5536 'ZIP' => !! option 'dist-zip',
5538 'INSTALL-INFO' => ! option 'no-installinfo',
5539 'INSTALL-MAN' => ! option 'no-installman',
5540 'CK-NEWS' => !! option 'check-news',
5542 'SUBDIRS' => !! var ('SUBDIRS'),
5543 'TOPDIR' => backname ($relative_dir),
5544 'TOPDIR_P' => $relative_dir eq '.',
5545 'CONFIGURE-AC' => $configure_ac,
5547 'BUILD' => $seen_canonical == AC_CANONICAL_SYSTEM,
5548 'HOST' => $seen_canonical,
5549 'TARGET' => $seen_canonical == AC_CANONICAL_SYSTEM,
5551 'LIBTOOL' => !! var ('LIBTOOL'))
5552 # We don't need more than two consecutive new-lines.
5553 . 's/\n{3,}/\n\n/g';
5555 # Swallow the file and apply the COMMAND.
5556 my $fc_file = new Automake::XFile "< $file";
5557 # Looks stupid?
5558 verb "reading $file";
5559 my $saved_dollar_slash = $/;
5560 undef $/;
5561 $_ = $fc_file->getline;
5562 $/ = $saved_dollar_slash;
5563 eval $command;
5564 $fc_file->close;
5565 my $content = $_;
5567 # Split at unescaped new lines.
5568 my @lines = split (/(?<!\\)\n/, $content);
5569 my @res;
5571 while (defined ($_ = shift @lines))
5572 {
5573 my $paragraph = "$_";
5574 # If we are a rule, eat as long as we start with a tab.
5575 if (/$RULE_PATTERN/smo)
5576 {
5577 while (defined ($_ = shift @lines) && $_ =~ /^\t/)
5578 {
5579 $paragraph .= "\n$_";
5580 }
5581 unshift (@lines, $_);
5582 }
5584 # If we are a comments, eat as much comments as you can.
5585 elsif (/$COMMENT_PATTERN/smo)
5586 {
5587 while (defined ($_ = shift @lines)
5588 && $_ =~ /$COMMENT_PATTERN/smo)
5589 {
5590 $paragraph .= "\n$_";
5591 }
5592 unshift (@lines, $_);
5593 }
5595 push @res, $paragraph;
5596 $paragraph = '';
5597 }
5599 return @res;
5600 }
5604 # ($COMMENT, $VARIABLES, $RULES)
5605 # &file_contents_internal ($IS_AM, $FILE, $WHERE, [%TRANSFORM])
5606 # -------------------------------------------------------------
5607 # Return contents of a file from $libdir/am, automatically skipping
5608 # macros or rules which are already known. $IS_AM iff the caller is
5609 # reading an Automake file (as opposed to the user's Makefile.am).
5610 sub file_contents_internal ($$$%)
5611 {
5612 my ($is_am, $file, $where, %transform) = @_;
5614 $where->set ($file);
5616 my $result_vars = '';
5617 my $result_rules = '';
5618 my $comment = '';
5619 my $spacing = '';
5621 # The following flags are used to track rules spanning across
5622 # multiple paragraphs.
5623 my $is_rule = 0; # 1 if we are processing a rule.
5624 my $discard_rule = 0; # 1 if the current rule should not be output.
5626 # We save the conditional stack on entry, and then check to make
5627 # sure it is the same on exit. This lets us conditonally include
5628 # other files.
5629 my @saved_cond_stack = @cond_stack;
5630 my $cond = new Automake::Condition (@cond_stack);
5632 foreach (make_paragraphs ($file, %transform))
5633 {
5634 # FIXME: no line number available.
5635 $where->set ($file);
5637 # Sanity checks.
5638 error $where, "blank line following trailing backslash:\n$_"
5639 if /\\$/;
5640 error $where, "comment following trailing backslash:\n$_"
5641 if /\\#/;
5643 if (/^$/)
5644 {
5645 $is_rule = 0;
5646 # Stick empty line before the incoming macro or rule.
5647 $spacing = "\n";
5648 }
5649 elsif (/$COMMENT_PATTERN/mso)
5650 {
5651 $is_rule = 0;
5652 # Stick comments before the incoming macro or rule.
5653 $comment = "$_\n";
5654 }
5656 # Handle inclusion of other files.
5657 elsif (/$INCLUDE_PATTERN/o)
5658 {
5659 if ($cond != FALSE)
5660 {
5661 my $file = ($is_am ? "$libdir/am/" : '') . $1;
5662 $where->push_context ("`$file' included from here");
5663 # N-ary `.=' fails.
5664 my ($com, $vars, $rules)
5665 = file_contents_internal ($is_am, $file, $where, %transform);
5666 $where->pop_context;
5667 $comment .= $com;
5668 $result_vars .= $vars;
5669 $result_rules .= $rules;
5670 }
5671 }
5673 # Handling the conditionals.
5674 elsif (/$IF_PATTERN/o)
5675 {
5676 $cond = cond_stack_if ($1, $2, $file);
5677 }
5678 elsif (/$ELSE_PATTERN/o)
5679 {
5680 $cond = cond_stack_else ($1, $2, $file);
5681 }
5682 elsif (/$ENDIF_PATTERN/o)
5683 {
5684 $cond = cond_stack_endif ($1, $2, $file);
5685 }
5687 # Handling rules.
5688 elsif (/$RULE_PATTERN/mso)
5689 {
5690 $is_rule = 1;
5691 $discard_rule = 0;
5692 # Separate relationship from optional actions: the first
5693 # `new-line tab" not preceded by backslash (continuation
5694 # line).
5695 my $paragraph = $_;
5696 /^(.*?)(?:(?<!\\)\n(\t.*))?$/s;
5697 my ($relationship, $actions) = ($1, $2 || '');
5699 # Separate targets from dependencies: the first colon.
5700 $relationship =~ /^([^:]+\S+) *: *(.*)$/som;
5701 my ($targets, $dependencies) = ($1, $2);
5702 # Remove the escaped new lines.
5703 # I don't know why, but I have to use a tmp $flat_deps.
5704 my $flat_deps = &flatten ($dependencies);
5705 my @deps = split (' ', $flat_deps);
5707 foreach (split (' ' , $targets))
5708 {
5709 # FIXME: 1. We are not robust to people defining several targets
5710 # at once, only some of them being in %dependencies. The
5711 # actions from the targets in %dependencies are usually generated
5712 # from the content of %actions, but if some targets in $targets
5713 # are not in %dependencies the ELSE branch will output
5714 # a rule for all $targets (i.e. the targets which are both
5715 # in %dependencies and $targets will have two rules).
5717 # FIXME: 2. The logic here is not able to output a
5718 # multi-paragraph rule several time (e.g. for each condition
5719 # it is defined for) because it only knows the first paragraph.
5721 # FIXME: 3. We are not robust to people defining a subset
5722 # of a previously defined "multiple-target" rule. E.g.
5723 # `foo:' after `foo bar:'.
5725 # Output only if not in FALSE.
5726 if (defined $dependencies{$_} && $cond != FALSE)
5727 {
5728 &depend ($_, @deps);
5729 if ($actions{$_})
5730 {
5731 $actions{$_} .= "\n$actions";
5732 }
5733 else
5734 {
5735 $actions{$_} = $actions;
5736 }
5737 }
5738 else
5739 {
5740 # Free-lance dependency. Output the rule for all the
5741 # targets instead of one by one.
5742 my @undefined_conds =
5743 Automake::Rule::define ($targets, $file,
5744 $is_am ? RULE_AUTOMAKE : RULE_USER,
5745 $cond, $where);
5746 for my $undefined_cond (@undefined_conds)
5747 {
5748 my $condparagraph = $paragraph;
5749 $condparagraph =~ s/^/$undefined_cond->subst_string/gme;
5750 $result_rules .= "$spacing$comment$condparagraph\n";
5751 }
5752 if (scalar @undefined_conds == 0)
5753 {
5754 # Remember to discard next paragraphs
5755 # if they belong to this rule.
5756 # (but see also FIXME: #2 above.)
5757 $discard_rule = 1;
5758 }
5759 $comment = $spacing = '';
5760 last;
5761 }
5762 }
5763 }
5765 elsif (/$ASSIGNMENT_PATTERN/mso)
5766 {
5767 my ($var, $type, $val) = ($1, $2, $3);
5768 error $where, "variable `$var' with trailing backslash"
5769 if /\\$/;
5771 $is_rule = 0;
5773 Automake::Variable::define ($var,
5774 $is_am ? VAR_AUTOMAKE : VAR_MAKEFILE,
5775 $type, $cond, $val, $comment, $where,
5776 VAR_ASIS)
5777 if $cond != FALSE;
5779 $comment = $spacing = '';
5780 }
5781 else
5782 {
5783 # This isn't an error; it is probably some tokens which
5784 # configure is supposed to replace, such as `@SET-MAKE@',
5785 # or some part of a rule cut by an if/endif.
5786 if (! $cond->false && ! ($is_rule && $discard_rule))
5787 {
5788 s/^/$cond->subst_string/gme;
5789 $result_rules .= "$spacing$comment$_\n";
5790 }
5791 $comment = $spacing = '';
5792 }
5793 }
5795 error ($where, @cond_stack ?
5796 "unterminated conditionals: @cond_stack" :
5797 "too many conditionals closed in include file")
5798 if "@saved_cond_stack" ne "@cond_stack";
5800 return ($comment, $result_vars, $result_rules);
5801 }
5804 # $CONTENTS
5805 # &file_contents ($BASENAME, $WHERE, [%TRANSFORM])
5806 # ------------------------------------------------
5807 # Return contents of a file from $libdir/am, automatically skipping
5808 # macros or rules which are already known.
5809 sub file_contents ($$%)
5810 {
5811 my ($basename, $where, %transform) = @_;
5812 my ($comments, $variables, $rules) =
5813 file_contents_internal (1, "$libdir/am/$basename.am", $where,
5814 %transform);
5815 return "$comments$variables$rules";
5816 }
5819 # $REGEXP
5820 # &transform (%PAIRS)
5821 # -------------------
5822 # For each ($TOKEN, $VAL) in %PAIRS produce a replacement expression
5823 # suitable for file_contents which:
5824 # - replaces %$TOKEN% with $VAL,
5825 # - enables/disables ?$TOKEN? and ?!$TOKEN?,
5826 # - replaces %?$TOKEN% with TRUE or FALSE.
5827 sub transform (%)
5828 {
5829 my (%pairs) = @_;
5830 my $result = '';
5832 while (my ($token, $val) = each %pairs)
5833 {
5834 $result .= "s/\Q%$token%\E/\Q$val\E/gm;";
5835 if ($val)
5836 {
5837 $result .= "s/\Q?$token?\E//gm;s/^.*\Q?!$token?\E.*\\n//gm;";
5838 $result .= "s/\Q%?$token%\E/TRUE/gm;";
5839 }
5840 else
5841 {
5842 $result .= "s/\Q?!$token?\E//gm;s/^.*\Q?$token?\E.*\\n//gm;";
5843 $result .= "s/\Q%?$token%\E/FALSE/gm;";
5844 }
5845 }
5847 return $result;
5848 }
5851 # &append_exeext ($MACRO)
5852 # -----------------------
5853 # Macro is an Automake magic macro which primary is PROGRAMS, e.g.
5854 # bin_PROGRAMS. Make sure these programs have $(EXEEXT) appended.
5855 sub append_exeext ($)
5856 {
5857 my ($macro) = @_;
5859 prog_error "append_exeext ($macro)"
5860 unless $macro =~ /_PROGRAMS$/;
5862 transform_variable_recursively
5863 ($macro, $macro, 'am__EXEEXT', 0, INTERNAL,
5864 sub {
5865 my ($subvar, $val, $cond, $full_cond) = @_;
5866 # Append $(EXEEXT) unless the user did it already.
5867 $val .= '$(EXEEXT)' unless $val =~ /\$\(EXEEXT\)$/;
5868 return $val;
5869 });
5870 }
5873 # @PREFIX
5874 # &am_primary_prefixes ($PRIMARY, $CAN_DIST, @PREFIXES)
5875 # -----------------------------------------------------
5876 # Find all variable prefixes that are used for install directories. A
5877 # prefix `zar' qualifies iff:
5878 #
5879 # * `zardir' is a variable.
5880 # * `zar_PRIMARY' is a variable.
5881 #
5882 # As a side effect, it looks for misspellings. It is an error to have
5883 # a variable ending in a "reserved" suffix whose prefix is unknown, e.g.
5884 # "bin_PROGRAMS". However, unusual prefixes are allowed if a variable
5885 # of the same name (with "dir" appended) exists. For instance, if the
5886 # variable "zardir" is defined, then "zar_PROGRAMS" becomes valid.
5887 # This is to provide a little extra flexibility in those cases which
5888 # need it.
5889 sub am_primary_prefixes ($$@)
5890 {
5891 my ($primary, $can_dist, @prefixes) = @_;
5893 local $_;
5894 my %valid = map { $_ => 0 } @prefixes;
5895 $valid{'EXTRA'} = 0;
5896 foreach my $var (variables)
5897 {
5898 # Automake is allowed to define variables that look like primaries
5899 # but which aren't. E.g. INSTALL_sh_DATA.
5900 # Autoconf can also define variables like INSTALL_DATA, so
5901 # ignore all configure variables (at least those which are not
5902 # redefined in Makefile.am).
5903 # FIXME: We should make sure that these variables are not
5904 # conditionally defined (or else adjust the condition below).
5905 my $def = $var->def (TRUE);
5906 next if $def && $def->owner != VAR_MAKEFILE;
5908 my $varname = $var->name;
5910 if ($varname =~ /^(nobase_)?(dist_|nodist_)?(.*)_$primary$/)
5911 {
5912 my ($base, $dist, $X) = ($1 || '', $2 || '', $3 || '');
5913 if ($dist ne '' && ! $can_dist)
5914 {
5915 err_var ($var,
5916 "invalid variable `$varname': `dist' is forbidden");
5917 }
5918 # Standard directories must be explicitely allowed.
5919 elsif (! defined $valid{$X} && exists $standard_prefix{$X})
5920 {
5921 err_var ($var,
5922 "`${X}dir' is not a legitimate directory " .
5923 "for `$primary'");
5924 }
5925 # A not explicitely valid directory is allowed if Xdir is defined.
5926 elsif (! defined $valid{$X} &&
5927 $var->requires_variables ("`$varname' is used", "${X}dir"))
5928 {
5929 # Nothing to do. Any error message has been output
5930 # by $var->requires_variables.
5931 }
5932 else
5933 {
5934 # Ensure all extended prefixes are actually used.
5935 $valid{"$base$dist$X"} = 1;
5936 }
5937 }
5938 }
5940 # Return only those which are actually defined.
5941 return sort grep { var ($_ . '_' . $primary) } keys %valid;
5942 }
5945 # Handle `where_HOW' variable magic. Does all lookups, generates
5946 # install code, and possibly generates code to define the primary
5947 # variable. The first argument is the name of the .am file to munge,
5948 # the second argument is the primary variable (e.g. HEADERS), and all
5949 # subsequent arguments are possible installation locations.
5950 #
5951 # Returns list of [$location, $value] pairs, where
5952 # $value's are the values in all where_HOW variable, and $location
5953 # there associated location (the place here their parent variables were
5954 # defined).
5955 #
5956 # FIXME: this should be rewritten to be cleaner. It should be broken
5957 # up into multiple functions.
5958 #
5959 # Usage is: am_install_var (OPTION..., file, HOW, where...)
5960 sub am_install_var
5961 {
5962 my (@args) = @_;
5964 my $do_require = 1;
5965 my $can_dist = 0;
5966 my $default_dist = 0;
5967 while (@args)
5968 {
5969 if ($args[0] eq '-noextra')
5970 {
5971 $do_require = 0;
5972 }
5973 elsif ($args[0] eq '-candist')
5974 {
5975 $can_dist = 1;
5976 }
5977 elsif ($args[0] eq '-defaultdist')
5978 {
5979 $default_dist = 1;
5980 $can_dist = 1;
5981 }
5982 elsif ($args[0] !~ /^-/)
5983 {
5984 last;
5985 }
5986 shift (@args);
5987 }
5989 my ($file, $primary, @prefix) = @args;
5991 # Now that configure substitutions are allowed in where_HOW
5992 # variables, it is an error to actually define the primary. We
5993 # allow `JAVA', as it is customarily used to mean the Java
5994 # interpreter. This is but one of several Java hacks. Similarly,
5995 # `PYTHON' is customarily used to mean the Python interpreter.
5996 reject_var $primary, "`$primary' is an anachronism"
5997 unless $primary eq 'JAVA' || $primary eq 'PYTHON';
5999 # Get the prefixes which are valid and actually used.
6000 @prefix = am_primary_prefixes ($primary, $can_dist, @prefix);
6002 # If a primary includes a configure substitution, then the EXTRA_
6003 # form is required. Otherwise we can't properly do our job.
6004 my $require_extra;
6006 my @used = ();
6007 my @result = ();
6009 # True if the iteration is the first one. Used for instance to
6010 # output parts of the associated file only once.
6011 my $first = 1;
6012 foreach my $X (@prefix)
6013 {
6014 my $nodir_name = $X;
6015 my $one_name = $X . '_' . $primary;
6016 my $one_var = var $one_name;
6018 my $strip_subdir = 1;
6019 # If subdir prefix should be preserved, do so.
6020 if ($nodir_name =~ /^nobase_/)
6021 {
6022 $strip_subdir = 0;
6023 $nodir_name =~ s/^nobase_//;
6024 }
6026 # If files should be distributed, do so.
6027 my $dist_p = 0;
6028 if ($can_dist)
6029 {
6030 $dist_p = (($default_dist && $nodir_name !~ /^nodist_/)
6031 || (! $default_dist && $nodir_name =~ /^dist_/));
6032 $nodir_name =~ s/^(dist|nodist)_//;
6033 }
6036 # Use the location of the currently processed variable.
6037 # We are not processing a particular condition, so pick the first
6038 # available.
6039 my $tmpcond = $one_var->conditions->one_cond;
6040 my $where = $one_var->rdef ($tmpcond)->location->clone;
6042 # Append actual contents of where_PRIMARY variable to
6043 # @result, skipping @substitutions@.
6044 foreach my $locvals ($one_var->loc_and_value_as_list_recursive ('all'))
6045 {
6046 my ($loc, $value) = @$locvals;
6047 # Skip configure substitutions.
6048 if ($value =~ /^\@.*\@$/)
6049 {
6050 if ($nodir_name eq 'EXTRA')
6051 {
6052 error ($where,
6053 "`$one_name' contains configure substitution, "
6054 . "but shouldn't");
6055 }
6056 # Check here to make sure variables defined in
6057 # configure.ac do not imply that EXTRA_PRIMARY
6058 # must be defined.
6059 elsif (! defined $configure_vars{$one_name})
6060 {
6061 $require_extra = $one_name
6062 if $do_require;
6063 }
6064 }
6065 else
6066 {
6067 push (@result, $locvals);
6068 }
6069 }
6070 # A blatant hack: we rewrite each _PROGRAMS primary to include
6071 # EXEEXT.
6072 append_exeext ($one_name)
6073 if $primary eq 'PROGRAMS';
6074 # "EXTRA" shouldn't be used when generating clean targets,
6075 # all, or install targets. We used to warn if EXTRA_FOO was
6076 # defined uselessly, but this was annoying.
6077 next
6078 if $nodir_name eq 'EXTRA';
6080 if ($nodir_name eq 'check')
6081 {
6082 push (@check, '$(' . $one_name . ')');
6083 }
6084 else
6085 {
6086 push (@used, '$(' . $one_name . ')');
6087 }
6089 # Is this to be installed?
6090 my $install_p = $nodir_name ne 'noinst' && $nodir_name ne 'check';
6092 # If so, with install-exec? (or install-data?).
6093 my $exec_p = ($nodir_name =~ /$EXEC_DIR_PATTERN/o);
6095 my $check_options_p = $install_p && !! option 'std-options';
6097 # Use the location of the currently processed variable as context.
6098 $where->push_context ("while processing `$one_name'");
6100 # Singular form of $PRIMARY.
6101 (my $one_primary = $primary) =~ s/S$//;
6102 $output_rules .= &file_contents ($file, $where,
6103 FIRST => $first,
6105 PRIMARY => $primary,
6106 ONE_PRIMARY => $one_primary,
6107 DIR => $X,
6108 NDIR => $nodir_name,
6109 BASE => $strip_subdir,
6111 EXEC => $exec_p,
6112 INSTALL => $install_p,
6113 DIST => $dist_p,
6114 'CK-OPTS' => $check_options_p);
6116 $first = 0;
6117 }
6119 # The JAVA variable is used as the name of the Java interpreter.
6120 # The PYTHON variable is used as the name of the Python interpreter.
6121 if (@used && $primary ne 'JAVA' && $primary ne 'PYTHON')
6122 {
6123 # Define it.
6124 define_pretty_variable ($primary, TRUE, INTERNAL, @used);
6125 $output_vars .= "\n";
6126 }
6128 err_var ($require_extra,
6129 "`$require_extra' contains configure substitution,\n"
6130 . "but `EXTRA_$primary' not defined")
6131 if ($require_extra && ! var ('EXTRA_' . $primary));
6133 # Push here because PRIMARY might be configure time determined.
6134 push (@all, '$(' . $primary . ')')
6135 if @used && $primary ne 'JAVA' && $primary ne 'PYTHON';
6137 # Make the result unique. This lets the user use conditionals in
6138 # a natural way, but still lets us program lazily -- we don't have
6139 # to worry about handling a particular object more than once.
6140 # We will keep only one location per object.
6141 my %result = ();
6142 for my $pair (@result)
6143 {
6144 my ($loc, $val) = @$pair;
6145 $result{$val} = $loc;
6146 }
6147 my @l = sort keys %result;
6148 return map { [$result{$_}->clone, $_] } @l;
6149 }
6152 ################################################################
6154 # Each key in this hash is the name of a directory holding a
6155 # Makefile.in. These variables are local to `is_make_dir'.
6156 my %make_dirs = ();
6157 my $make_dirs_set = 0;
6159 sub is_make_dir
6160 {
6161 my ($dir) = @_;
6162 if (! $make_dirs_set)
6163 {
6164 foreach my $iter (@configure_input_files)
6165 {
6166 $make_dirs{dirname ($iter)} = 1;
6167 }
6168 # We also want to notice Makefile.in's.
6169 foreach my $iter (@other_input_files)
6170 {
6171 if ($iter =~ /Makefile\.in$/)
6172 {
6173 $make_dirs{dirname ($iter)} = 1;
6174 }
6175 }
6176 $make_dirs_set = 1;
6177 }
6178 return defined $make_dirs{$dir};
6179 }
6181 ################################################################
6183 # This variable is local to the "require file" set of functions.
6184 my @require_file_paths = ();
6187 # &maybe_push_required_file ($DIR, $FILE, $FULLFILE)
6188 # --------------------------------------------------
6189 # See if we want to push this file onto dist_common. This function
6190 # encodes the rules for deciding when to do so.
6191 sub maybe_push_required_file
6192 {
6193 my ($dir, $file, $fullfile) = @_;
6195 if ($dir eq $relative_dir)
6196 {
6197 push_dist_common ($file);
6198 return 1;
6199 }
6200 elsif ($relative_dir eq '.' && ! &is_make_dir ($dir))
6201 {
6202 # If we are doing the topmost directory, and the file is in a
6203 # subdir which does not have a Makefile, then we distribute it
6204 # here.
6205 push_dist_common ($fullfile);
6206 return 1;
6207 }
6208 return 0;
6209 }
6212 # &require_file_internal ($WHERE, $MYSTRICT, @FILES)
6213 # --------------------------------------------------
6214 # Verify that the file must exist in the current directory.
6215 # $MYSTRICT is the strictness level at which this file becomes required.
6216 #
6217 # Must set require_file_paths before calling this function.
6218 # require_file_paths is set to hold a single directory (the one in
6219 # which the first file was found) before return.
6220 sub require_file_internal ($$@)
6221 {
6222 my ($where, $mystrict, @files) = @_;
6224 foreach my $file (@files)
6225 {
6226 my $fullfile;
6227 my $errdir;
6228 my $errfile;
6229 my $save_dir;
6231 my $found_it = 0;
6232 my $dangling_sym = 0;
6233 foreach my $dir (@require_file_paths)
6234 {
6235 $fullfile = $dir . "/" . $file;
6236 $errdir = $dir unless $errdir;
6238 # Use different name for "error filename". Otherwise on
6239 # an error the bad file will be reported as e.g.
6240 # `../../install-sh' when using the default
6241 # config_aux_path.
6242 $errfile = $errdir . '/' . $file;
6244 if (-l $fullfile && ! -f $fullfile)
6245 {
6246 $dangling_sym = 1;
6247 last;
6248 }
6249 elsif (-f $fullfile)
6250 {
6251 $found_it = 1;
6252 maybe_push_required_file ($dir, $file, $fullfile);
6253 $save_dir = $dir;
6254 last;
6255 }
6256 }
6258 # `--force-missing' only has an effect if `--add-missing' is
6259 # specified.
6260 if ($found_it && (! $add_missing || ! $force_missing))
6261 {
6262 # Prune the path list.
6263 @require_file_paths = $save_dir;
6264 }
6265 else
6266 {
6267 # If we've already looked for it, we're done. You might
6268 # wonder why we don't do this before searching for the
6269 # file. If we do that, then something like
6270 # AC_OUTPUT(subdir/foo foo) will fail to put foo.in into
6271 # DIST_COMMON.
6272 if (! $found_it)
6273 {
6274 next if defined $require_file_found{$fullfile};
6275 $require_file_found{$fullfile} = 1;
6276 }
6278 if ($strictness >= $mystrict)
6279 {
6280 if ($dangling_sym && $add_missing)
6281 {
6282 unlink ($fullfile);
6283 }
6285 my $trailer = '';
6286 my $suppress = 0;
6288 # Only install missing files according to our desired
6289 # strictness level.
6290 my $message = "required file `$errfile' not found";
6291 if ($add_missing)
6292 {
6293 if (-f ("$libdir/$file"))
6294 {
6295 $suppress = 1;
6297 # Install the missing file. Symlink if we
6298 # can, copy if we must. Note: delete the file
6299 # first, in case it is a dangling symlink.
6300 $message = "installing `$errfile'";
6301 # Windows Perl will hang if we try to delete a
6302 # file that doesn't exist.
6303 unlink ($errfile) if -f $errfile;
6304 if ($symlink_exists && ! $copy_missing)
6305 {
6306 if (! symlink ("$libdir/$file", $errfile))
6307 {
6308 $suppress = 0;
6309 $trailer = "; error while making link: $!";
6310 }
6311 }
6312 elsif (system ('cp', "$libdir/$file", $errfile))
6313 {
6314 $suppress = 0;
6315 $trailer = "\n error while copying";
6316 }
6317 }
6319 if (! maybe_push_required_file (dirname ($errfile),
6320 $file, $errfile))
6321 {
6322 if (! $found_it)
6323 {
6324 # We have added the file but could not push it
6325 # into DIST_COMMON (probably because this is
6326 # an auxiliary file and we are not processing
6327 # the top level Makefile). This is unfortunate,
6328 # since it means we are using a file which is not
6329 # distributed!
6331 # Get Automake to be run again: on the second
6332 # run the file will be found, and pushed into
6333 # the toplevel DIST_COMMON automatically.
6334 $automake_needs_to_reprocess_all_files = 1;
6335 }
6336 }
6338 # Prune the path list.
6339 @require_file_paths = &dirname ($errfile);
6340 }
6342 # If --force-missing was specified, and we have
6343 # actually found the file, then do nothing.
6344 next
6345 if $found_it && $force_missing;
6347 # If we couldn' install the file, but it is a target in
6348 # the Makefile, don't print anything. This allows files
6349 # like README, AUTHORS, or THANKS to be generated.
6350 next
6351 if !$suppress && rule $file;
6353 msg ($suppress ? 'note' : 'error', $where, "$message$trailer");
6354 }
6355 }
6356 }
6357 }
6359 # &require_file ($WHERE, $MYSTRICT, @FILES)
6360 # -----------------------------------------
6361 sub require_file ($$@)
6362 {
6363 my ($where, $mystrict, @files) = @_;
6364 @require_file_paths = $relative_dir;
6365 require_file_internal ($where, $mystrict, @files);
6366 }
6368 # &require_file_with_macro ($COND, $MACRO, $MYSTRICT, @FILES)
6369 # -----------------------------------------------------------
6370 sub require_file_with_macro ($$$@)
6371 {
6372 my ($cond, $macro, $mystrict, @files) = @_;
6373 $macro = rvar ($macro) unless ref $macro;
6374 require_file ($macro->rdef ($cond)->location, $mystrict, @files);
6375 }
6378 # &require_conf_file ($WHERE, $MYSTRICT, @FILES)
6379 # ----------------------------------------------
6380 # Looks in configuration path, as specified by AC_CONFIG_AUX_DIR.
6381 sub require_conf_file ($$@)
6382 {
6383 my ($where, $mystrict, @files) = @_;
6384 @require_file_paths = @config_aux_path;
6385 require_file_internal ($where, $mystrict, @files);
6386 my $dir = $require_file_paths[0];
6387 @config_aux_path = @require_file_paths;
6388 # Avoid unsightly '/.'s.
6389 $config_aux_dir = '$(top_srcdir)' . ($dir eq '.' ? "" : "/$dir");
6390 }
6393 # &require_conf_file_with_macro ($COND, $MACRO, $MYSTRICT, @FILES)
6394 # ----------------------------------------------------------------
6395 sub require_conf_file_with_macro ($$$@)
6396 {
6397 my ($cond, $macro, $mystrict, @files) = @_;
6398 require_conf_file (rvar ($macro)->rdef ($cond)->location,
6399 $mystrict, @files);
6400 }
6402 ################################################################
6404 # &require_build_directory ($DIRECTORY)
6405 # ------------------------------------
6406 # Emit rules to create $DIRECTORY if needed, and return
6407 # the file that any target requiring this directory should be made
6408 # dependent upon.
6409 sub require_build_directory ($)
6410 {
6411 my $directory = shift;
6412 my $dirstamp = "$directory/\$(am__dirstamp)";
6414 # Don't emit the rule twice.
6415 if (! defined $directory_map{$directory})
6416 {
6417 $directory_map{$directory} = 1;
6419 # Set a variable for the dirstamp basename.
6420 define_pretty_variable ('am__dirstamp', TRUE, INTERNAL,
6421 '$(am__leading_dot)dirstamp');
6423 # Directory must be removed by `make distclean'.
6424 $clean_files{$dirstamp} = DIST_CLEAN;
6426 $output_rules .= ("$dirstamp:\n"
6427 . "\t\@\$(mkinstalldirs) $directory\n"
6428 . "\t\@: > $dirstamp\n");
6429 }
6431 return $dirstamp;
6432 }
6434 # &require_build_directory_maybe ($FILE)
6435 # --------------------------------------
6436 # If $FILE lies in a subdirectory, emit a rule to create this
6437 # directory and return the file that $FILE should be made
6438 # dependent upon. Otherwise, just return the empty string.
6439 sub require_build_directory_maybe ($)
6440 {
6441 my $file = shift;
6442 my $directory = dirname ($file);
6444 if ($directory ne '.')
6445 {
6446 return require_build_directory ($directory);
6447 }
6448 else
6449 {
6450 return '';
6451 }
6452 }
6454 ################################################################
6456 # Push a list of files onto dist_common.
6457 sub push_dist_common
6458 {
6459 prog_error "push_dist_common run after handle_dist"
6460 if $handle_dist_run;
6461 Automake::Variable::define ('DIST_COMMON', VAR_AUTOMAKE, '+', TRUE, "@_",
6462 '', INTERNAL, VAR_PRETTY);
6463 }
6466 ################################################################
6468 # generate_makefile ($OUTPUT, $MAKEFILE)
6469 # --------------------------------------
6470 # Generate a Makefile.in given the name of the corresponding Makefile and
6471 # the name of the file output by config.status.
6472 sub generate_makefile ($$)
6473 {
6474 my ($output, $makefile) = @_;
6476 # Reset all the Makefile.am related variables.
6477 initialize_per_input;
6479 # Any warning setting now local to this Makefile.am.
6480 dup_channel_setup;
6481 # AUTOMAKE_OPTIONS can contains -W flags to disable or enable
6482 # warnings for this file. So hold any warning issued before
6483 # we have processed AUTOMAKE_OPTIONS.
6484 buffer_messages ('warning');
6486 # Name of input file ("Makefile.am") and output file
6487 # ("Makefile.in"). These have no directory components.
6488 $am_file_name = basename ($makefile) . '.am';
6489 $in_file_name = basename ($makefile) . '.in';
6491 # $OUTPUT is encoded. If it contains a ":" then the first element
6492 # is the real output file, and all remaining elements are input
6493 # files. We don't scan or otherwise deal with these input files,
6494 # other than to mark them as dependencies. See
6495 # &scan_autoconf_files for details.
6496 my (@secondary_inputs);
6497 ($output, @secondary_inputs) = split (/:/, $output);
6499 $relative_dir = dirname ($output);
6500 $am_relative_dir = dirname ($makefile);
6502 read_main_am_file ($makefile . '.am');
6503 if (handle_options)
6504 {
6505 # Process buffered warnings.
6506 flush_messages;
6507 # Fatal error. Just return, so we can continue with next file.
6508 return;
6509 }
6510 # Process buffered warnings.
6511 flush_messages;
6513 # There are a few install-related variables that you should not define.
6514 foreach my $var ('PRE_INSTALL', 'POST_INSTALL', 'NORMAL_INSTALL')
6515 {
6516 my $v = var $var;
6517 if ($v)
6518 {
6519 my $def = $v->def (TRUE);
6520 prog_error "$var not defined in condition TRUE"
6521 unless $def;
6522 reject_var $var, "`$var' should not be defined"
6523 if $def->owner != VAR_AUTOMAKE;
6524 }
6525 }
6527 # Catch some obsolete variables.
6528 msg_var ('obsolete', 'INCLUDES',
6529 "`INCLUDES' is the old name for `AM_CPPFLAGS'")
6530 if var ('INCLUDES');
6532 # At the toplevel directory, we might need config.guess, config.sub
6533 # or libtool scripts (ltconfig and ltmain.sh).
6534 if ($relative_dir eq '.')
6535 {
6536 # AC_CANONICAL_HOST and AC_CANONICAL_SYSTEM need config.guess and
6537 # config.sub.
6538 require_conf_file ($canonical_location, FOREIGN,
6539 'config.guess', 'config.sub')
6540 if $seen_canonical;
6541 }
6543 # Must do this after reading .am file.
6544 define_variable ('subdir', $relative_dir, INTERNAL);
6546 # Check first, because we might modify some state.
6547 check_cygnus;
6548 check_gnu_standards;
6549 check_gnits_standards;
6551 handle_configure ($output, $makefile, @secondary_inputs);
6552 handle_gettext;
6553 handle_libraries;
6554 handle_ltlibraries;
6555 handle_programs;
6556 handle_scripts;
6558 # This must run first so that the ANSI2KNR definition is generated
6559 # before it is used by the _.c rules. We have to do this because
6560 # a variable which is used in a dependency must be defined before
6561 # the target, or else make won't properly see it.
6562 handle_compile;
6563 # This must be run after all the sources are scanned.
6564 handle_languages;
6566 # We have to run this after dealing with all the programs.
6567 handle_libtool;
6569 # Variables used by distdir.am and tags.am.
6570 define_pretty_variable ('SOURCES', TRUE, INTERNAL, @sources);
6571 define_pretty_variable ('DIST_SOURCES', TRUE, INTERNAL, @dist_sources);
6573 handle_multilib;
6574 handle_texinfo;
6575 handle_emacs_lisp;
6576 handle_python;
6577 handle_java;
6578 handle_man_pages;
6579 handle_data;
6580 handle_headers;
6581 handle_subdirs;
6582 handle_tags;
6583 handle_minor_options;
6584 handle_tests;
6586 # This must come after most other rules.
6587 handle_dist ($makefile);
6589 handle_footer;
6590 do_check_merge_target;
6591 handle_all ($output);
6593 # FIXME: Gross!
6594 if (var ('lib_LTLIBRARIES') && var ('bin_PROGRAMS'))
6595 {
6596 $output_rules .= "install-binPROGRAMS: install-libLTLIBRARIES\n\n";
6597 }
6599 handle_install;
6600 handle_clean;
6601 handle_factored_dependencies;
6603 # Comes last, because all the above procedures may have
6604 # defined or overridden variables.
6605 $output_vars .= output_variables;
6607 check_typos;
6609 if (! -d ($output_directory . '/' . $am_relative_dir))
6610 {
6611 mkdir ($output_directory . '/' . $am_relative_dir, 0755);
6612 }
6614 my ($out_file) = $output_directory . '/' . $makefile . ".in";
6615 if (! $force_generation && -e $out_file)
6616 {
6617 my ($am_time) = (stat ($makefile . '.am'))[9];
6618 my ($in_time) = (stat ($out_file))[9];
6619 # FIXME: should cache these times.
6620 my ($conf_time) = (stat ($configure_ac))[9];
6621 # FIXME: how to do unsigned comparison?
6622 if ($am_time < $in_time || $am_time < $conf_time)
6623 {
6624 # No need to update.
6625 return;
6626 }
6627 if (-f 'aclocal.m4')
6628 {
6629 my ($acl_time) = (stat _)[9];
6630 return if ($am_time < $acl_time);
6631 }
6632 }
6634 if (-e "$out_file")
6635 {
6636 unlink ($out_file)
6637 or fatal "cannot remove $out_file: $!\n";
6638 }
6639 my $gm_file = new Automake::XFile "> $out_file";
6640 verb "creating $makefile.in";
6642 print $gm_file $output_vars;
6643 # We make sure that `all:' is the first target.
6644 print $gm_file $output_all;
6645 print $gm_file $output_header;
6646 print $gm_file $output_rules;
6647 print $gm_file $output_trailer;
6649 # Back out any warning setting.
6650 drop_channel_setup;
6651 }
6653 ################################################################
6658 ################################################################
6660 # Print usage information.
6661 sub usage ()
6662 {
6663 print "Usage: $0 [OPTION] ... [Makefile]...
6665 Generate Makefile.in for configure from Makefile.am.
6667 Operation modes:
6668 --help print this help, then exit
6669 --version print version number, then exit
6670 -v, --verbose verbosely list files processed
6671 --no-force only update Makefile.in's that are out of date
6672 -W, --warnings=CATEGORY report the warnings falling in CATEGORY
6674 Dependency tracking:
6675 -i, --ignore-deps disable dependency tracking code
6676 --include-deps enable dependency tracking code
6678 Flavors:
6679 --cygnus assume program is part of Cygnus-style tree
6680 --foreign set strictness to foreign
6681 --gnits set strictness to gnits
6682 --gnu set strictness to gnu
6684 Library files:
6685 -a, --add-missing add missing standard files to package
6686 --libdir=DIR directory storing library files
6687 -c, --copy with -a, copy missing files (default is symlink)
6688 -f, --force-missing force update of standard files
6690 ";
6691 Automake::ChannelDefs::usage;
6693 my ($last, @lcomm);
6694 $last = '';
6695 foreach my $iter (sort ((@common_files, @common_sometimes)))
6696 {
6697 push (@lcomm, $iter) unless $iter eq $last;
6698 $last = $iter;
6699 }
6701 my @four;
6702 print "\nFiles which are automatically distributed, if found:\n";
6703 format USAGE_FORMAT =
6704 @<<<<<<<<<<<<<<<< @<<<<<<<<<<<<<<<< @<<<<<<<<<<<<<<<< @<<<<<<<<<<<<<<<<
6705 $four[0], $four[1], $four[2], $four[3]
6706 .
6707 $~ = "USAGE_FORMAT";
6709 my $cols = 4;
6710 my $rows = int(@lcomm / $cols);
6711 my $rest = @lcomm % $cols;
6713 if ($rest)
6714 {
6715 $rows++;
6716 }
6717 else
6718 {
6719 $rest = $cols;
6720 }
6722 for (my $y = 0; $y < $rows; $y++)
6723 {
6724 @four = ("", "", "", "");
6725 for (my $x = 0; $x < $cols; $x++)
6726 {
6727 last if $y + 1 == $rows && $x == $rest;
6729 my $idx = (($x > $rest)
6730 ? ($rows * $rest + ($rows - 1) * ($x - $rest))
6731 : ($rows * $x));
6733 $idx += $y;
6734 $four[$x] = $lcomm[$idx];
6735 }
6736 write;
6737 }
6739 print "\nReport bugs to <bug-automake\@gnu.org>.\n";
6741 # --help always returns 0 per GNU standards.
6742 exit 0;
6743 }
6746 # &version ()
6747 # -----------
6748 # Print version information
6749 sub version ()
6750 {
6751 print <<EOF;
6752 automake (GNU $PACKAGE) $VERSION
6753 Written by Tom Tromey <tromey\@redhat.com>.
6755 Copyright 2003 Free Software Foundation, Inc.
6756 This is free software; see the source for copying conditions. There is NO
6757 warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
6758 EOF
6759 # --version always returns 0 per GNU standards.
6760 exit 0;
6761 }
6763 ################################################################
6765 # Parse command line.
6766 sub parse_arguments ()
6767 {
6768 # Start off as gnu.
6769 set_strictness ('gnu');
6771 my $cli_where = new Automake::Location;
6772 my %cli_options =
6773 (
6774 'libdir:s' => \$libdir,
6775 'gnu' => sub { set_strictness ('gnu'); },
6776 'gnits' => sub { set_strictness ('gnits'); },
6777 'cygnus' => sub { set_global_option ('cygnus', $cli_where); },
6778 'foreign' => sub { set_strictness ('foreign'); },
6779 'include-deps' => sub { unset_global_option ('no-dependencies'); },
6780 'i|ignore-deps' => sub { set_global_option ('no-dependencies',
6781 $cli_where); },
6782 'no-force' => sub { $force_generation = 0; },
6783 'f|force-missing' => \$force_missing,
6784 'o|output-dir:s' => \$output_directory,
6785 'a|add-missing' => \$add_missing,
6786 'c|copy' => \$copy_missing,
6787 'v|verbose' => sub { setup_channel 'verb', silent => 0; },
6788 'W|warnings:s' => \&parse_warnings,
6789 # These long options (--Werror and --Wno-error) for backward
6790 # compatibility. Use -Werror and -Wno-error today.
6791 'Werror' => sub { parse_warnings 'W', 'error'; },
6792 'Wno-error' => sub { parse_warnings 'W', 'no-error'; },
6793 );
6794 use Getopt::Long;
6795 Getopt::Long::config ("bundling", "pass_through");
6797 # See if --version or --help is used. We want to process these before
6798 # anything else because the GNU Coding Standards require us to
6799 # `exit 0' after processing these options, and we can't garanty this
6800 # if we treat other options first. (Handling other options first
6801 # could produce error diagnostics, and in this condition it is
6802 # confusing if Automake `exit 0'.)
6803 my %cli_options_1st_pass =
6804 (
6805 'version' => \&version,
6806 'help' => \&usage,
6807 # Recognize all other options (and their arguments) but do nothing.
6808 map { $_ => sub {} } (keys %cli_options)
6809 );
6810 my @ARGV_backup = @ARGV;
6811 Getopt::Long::GetOptions %cli_options_1st_pass
6812 or exit 1;
6813 @ARGV = @ARGV_backup;
6815 # Now *really* process the options. This time we know
6816 # that --help and --version are not present.
6817 Getopt::Long::GetOptions %cli_options
6818 or exit 1;
6820 if (defined $output_directory)
6821 {
6822 msg 'obsolete', "`--output-dir' is deprecated\n";
6823 }
6824 else
6825 {
6826 # In the next release we'll remove this entirely.
6827 $output_directory = '.';
6828 }
6830 foreach my $arg (@ARGV)
6831 {
6832 if ($arg =~ /^-./)
6833 {
6834 fatal ("unrecognized option `$arg'\n"
6835 . "Try `$0 --help' for more information.");
6836 }
6838 # Handle $local:$input syntax. Note that we only examine the
6839 # first ":" file to see if it is automake input; the rest are
6840 # just taken verbatim. We still keep all the files around for
6841 # dependency checking, however.
6842 my ($local, $input, @rest) = split (/:/, $arg);
6843 if (! $input)
6844 {
6845 $input = $local;
6846 }
6847 else
6848 {
6849 # Strip .in; later on .am is tacked on. That is how the
6850 # automake input file is found. Maybe not the best way, but
6851 # it is easy to explain.
6852 $input =~ s/\.in$//
6853 or fatal "invalid input file name `$arg'\n.";
6854 }
6855 push (@input_files, $input);
6856 $output_files{$input} = join (':', ($local, @rest));
6857 }
6858 }
6860 ################################################################
6862 # Parse the WARNINGS environment variable.
6863 parse_WARNINGS;
6865 # Parse command line.
6866 parse_arguments;
6868 # Do configure.ac scan only once.
6869 scan_autoconf_files;
6871 fatal "no `Makefile.am' found or specified\n"
6872 if ! @input_files;
6874 my $automake_has_run = 0;
6876 do
6877 {
6878 if ($automake_has_run)
6879 {
6880 verb 'processing Makefiles another time to fix them up.';
6881 prog_error 'running more than two times should never be needed.'
6882 if $automake_has_run >= 2;
6883 }
6884 $automake_needs_to_reprocess_all_files = 0;
6886 # Now do all the work on each file.
6887 foreach my $file (@input_files)
6888 {
6889 $am_file = $file;
6890 if (! -f ($am_file . '.am'))
6891 {
6892 error "`$am_file.am' does not exist";
6893 }
6894 else
6895 {
6896 generate_makefile ($output_files{$am_file}, $am_file);
6897 }
6898 }
6899 ++$automake_has_run;
6900 }
6901 while ($automake_needs_to_reprocess_all_files);
6903 exit $exit_code;
6906 ### Setup "GNU" style for perl-mode and cperl-mode.
6907 ## Local Variables:
6908 ## perl-indent-level: 2
6909 ## perl-continued-statement-offset: 2
6910 ## perl-continued-brace-offset: 0
6911 ## perl-brace-offset: 0
6912 ## perl-brace-imaginary-offset: 0
6913 ## perl-label-offset: -2
6914 ## cperl-indent-level: 2
6915 ## cperl-brace-offset: 0
6916 ## cperl-continued-brace-offset: 0
6917 ## cperl-label-offset: -2
6918 ## cperl-extra-newline-before-brace: t
6919 ## cperl-merge-trailing-else: nil
6920 ## cperl-continued-statement-offset: 2
6921 ## End: