| blob | 2ba82fc2857c6e991394b2d42bbf62c634d59ca6 |
1 #!@PERL@ -w
2 # -*- perl -*-
3 # @configure_input@
5 eval 'case $# in 0) exec @PERL@ -S "$0";; *) exec @PERL@ -S "$0" "$@";; esac'
6 if 0;
8 # automake - create Makefile.in from Makefile.am
9 # Copyright (C) 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002,
10 # 2003, 2004, 2005, 2006 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., 51 Franklin Street, Fifth Floor, Boston, MA
25 # 02110-1301, USA.
27 # Originally written by David Mackenzie <djm@gnu.ai.mit.edu>.
28 # Perl reimplementation by Tom Tromey <tromey@redhat.com>, and
29 # Alexandre Duret-Lutz <adl@gnu.org>.
31 package Language;
33 BEGIN
34 {
35 my $perllibdir = $ENV{'perllibdir'} || '@datadir@/@PACKAGE@-@APIVERSION@';
36 unshift @INC, (split '@PATH_SEPARATOR@', $perllibdir);
38 # Override SHELL. This is required on DJGPP so that system() uses
39 # bash, not COMMAND.COM which doesn't quote arguments properly.
40 # Other systems aren't expected to use $SHELL when Automake
41 # runs, but it should be safe to drop the `if DJGPP' guard if
42 # it turns up other systems need the same thing. After all,
43 # if SHELL is used, ./configure's SHELL is always better than
44 # the user's SHELL (which may be something like tcsh).
45 $ENV{'SHELL'} = '@SHELL@' if exists $ENV{'DJGPP'};
46 }
48 use Automake::Struct;
49 struct (# Short name of the language (c, f77...).
50 'name' => "\$",
51 # Nice name of the language (C, Fortran 77...).
52 'Name' => "\$",
54 # List of configure variables which must be defined.
55 'config_vars' => '@',
57 'ansi' => "\$",
58 # `pure' is `1' or `'. A `pure' language is one where, if
59 # all the files in a directory are of that language, then we
60 # do not require the C compiler or any code to call it.
61 'pure' => "\$",
63 'autodep' => "\$",
65 # Name of the compiling variable (COMPILE).
66 'compiler' => "\$",
67 # Content of the compiling variable.
68 'compile' => "\$",
69 # Flag to require compilation without linking (-c).
70 'compile_flag' => "\$",
71 'extensions' => '@',
72 # A subroutine to compute a list of possible extensions of
73 # the product given the input extensions.
74 # (defaults to a subroutine which returns ('.$(OBJEXT)', '.lo'))
75 'output_extensions' => "\$",
76 # A list of flag variables used in 'compile'.
77 # (defaults to [])
78 'flags' => "@",
80 # Any tag to pass to libtool while compiling.
81 'libtool_tag' => "\$",
83 # The file to use when generating rules for this language.
84 # The default is 'depend2'.
85 'rule_file' => "\$",
87 # Name of the linking variable (LINK).
88 'linker' => "\$",
89 # Content of the linking variable.
90 'link' => "\$",
92 # Name of the linker variable (LD).
93 'lder' => "\$",
94 # Content of the linker variable ($(CC)).
95 'ld' => "\$",
97 # Flag to specify the output file (-o).
98 'output_flag' => "\$",
99 '_finish' => "\$",
101 # This is a subroutine which is called whenever we finally
102 # determine the context in which a source file will be
103 # compiled.
104 '_target_hook' => "\$",
106 # If TRUE, nodist_ sources will be compiled using specific rules
107 # (i.e. not inference rules). The default is FALSE.
108 'nodist_specific' => "\$");
111 sub finish ($)
112 {
113 my ($self) = @_;
114 if (defined $self->_finish)
115 {
116 &{$self->_finish} ();
117 }
118 }
120 sub target_hook ($$$$%)
121 {
122 my ($self) = @_;
123 if (defined $self->_target_hook)
124 {
125 &{$self->_target_hook} (@_);
126 }
127 }
129 package Automake;
131 use strict;
132 use Automake::Config;
133 use Automake::General;
134 use Automake::XFile;
135 use Automake::Channels;
136 use Automake::ChannelDefs;
137 use Automake::Configure_ac;
138 use Automake::FileUtils;
139 use Automake::Location;
140 use Automake::Condition qw/TRUE FALSE/;
141 use Automake::DisjConditions;
142 use Automake::Options;
143 use Automake::Version;
144 use Automake::Variable;
145 use Automake::VarDef;
146 use Automake::Rule;
147 use Automake::RuleDef;
148 use Automake::Wrap 'makefile_wrap';
149 use File::Basename;
150 use File::Spec;
151 use Carp;
153 ## ----------- ##
154 ## Constants. ##
155 ## ----------- ##
157 # Some regular expressions. One reason to put them here is that it
158 # makes indentation work better in Emacs.
160 # Writing singled-quoted-$-terminated regexes is a pain because
161 # perl-mode thinks of $' as the ${'} variable (instead of a $ followed
162 # by a closing quote. Letting perl-mode think the quote is not closed
163 # leads to all sort of misindentations. On the other hand, defining
164 # regexes as double-quoted strings is far less readable. So usually
165 # we will write:
166 #
167 # $REGEX = '^regex_value' . "\$";
169 my $IGNORE_PATTERN = '^\s*##([^#\n].*)?\n';
170 my $WHITE_PATTERN = '^\s*' . "\$";
171 my $COMMENT_PATTERN = '^#';
172 my $TARGET_PATTERN='[$a-zA-Z_.@%][-.a-zA-Z0-9_(){}/$+@%]*';
173 # A rule has three parts: a list of targets, a list of dependencies,
174 # and optionally actions.
175 my $RULE_PATTERN =
176 "^($TARGET_PATTERN(?:(?:\\\\\n|\\s)+$TARGET_PATTERN)*) *:([^=].*|)\$";
178 # Only recognize leading spaces, not leading tabs. If we recognize
179 # leading tabs here then we need to make the reader smarter, because
180 # otherwise it will think rules like `foo=bar; \' are errors.
181 my $ASSIGNMENT_PATTERN = '^ *([^ \t=:+]*)\s*([:+]?)=\s*(.*)' . "\$";
182 # This pattern recognizes a Gnits version id and sets $1 if the
183 # release is an alpha release. We also allow a suffix which can be
184 # used to extend the version number with a "fork" identifier.
185 my $GNITS_VERSION_PATTERN = '\d+\.\d+([a-z]|\.\d+)?(-[A-Za-z0-9]+)?';
187 my $IF_PATTERN = '^if\s+(!?)\s*([A-Za-z][A-Za-z0-9_]*)\s*(?:#.*)?' . "\$";
188 my $ELSE_PATTERN =
189 '^else(?:\s+(!?)\s*([A-Za-z][A-Za-z0-9_]*))?\s*(?:#.*)?' . "\$";
190 my $ENDIF_PATTERN =
191 '^endif(?:\s+(!?)\s*([A-Za-z][A-Za-z0-9_]*))?\s*(?:#.*)?' . "\$";
192 my $PATH_PATTERN = '(\w|[+/.-])+';
193 # This will pass through anything not of the prescribed form.
194 my $INCLUDE_PATTERN = ('^include\s+'
195 . '((\$\(top_srcdir\)/' . $PATH_PATTERN . ')'
196 . '|(\$\(srcdir\)/' . $PATH_PATTERN . ')'
197 . '|([^/\$]' . $PATH_PATTERN . '))\s*(#.*)?' . "\$");
199 # Match `-d' as a command-line argument in a string.
200 my $DASH_D_PATTERN = "(^|\\s)-d(\\s|\$)";
201 # Directories installed during 'install-exec' phase.
202 my $EXEC_DIR_PATTERN =
203 '^(?:bin|sbin|libexec|sysconf|localstate|lib|pkglib|.*exec.*)' . "\$";
205 # Values for AC_CANONICAL_*
206 use constant AC_CANONICAL_BUILD => 1;
207 use constant AC_CANONICAL_HOST => 2;
208 use constant AC_CANONICAL_TARGET => 3;
210 # Values indicating when something should be cleaned.
211 use constant MOSTLY_CLEAN => 0;
212 use constant CLEAN => 1;
213 use constant DIST_CLEAN => 2;
214 use constant MAINTAINER_CLEAN => 3;
216 # Libtool files.
217 my @libtool_files = qw(ltmain.sh config.guess config.sub);
218 # ltconfig appears here for compatibility with old versions of libtool.
219 my @libtool_sometimes = qw(ltconfig ltcf-c.sh ltcf-cxx.sh ltcf-gcj.sh);
221 # Commonly found files we look for and automatically include in
222 # DISTFILES.
223 my @common_files =
224 (qw(ABOUT-GNU ABOUT-NLS AUTHORS BACKLOG COPYING COPYING.DOC COPYING.LIB
225 COPYING.LESSER ChangeLog INSTALL NEWS README THANKS TODO
226 ansi2knr.1 ansi2knr.c compile config.guess config.rpath config.sub
227 depcomp elisp-comp install-sh libversion.in mdate-sh missing
228 mkinstalldirs py-compile texinfo.tex ylwrap),
229 @libtool_files, @libtool_sometimes);
231 # Commonly used files we auto-include, but only sometimes. This list
232 # is used for the --help output only.
233 my @common_sometimes =
234 qw(aclocal.m4 acconfig.h config.h.top config.h.bot configure
235 configure.ac configure.in stamp-vti);
237 # Standard directories from the GNU Coding Standards, and additional
238 # pkg* directories from Automake. Stored in a hash for fast member check.
239 my %standard_prefix =
240 map { $_ => 1 } (qw(bin data dataroot dvi exec html include info
241 lib libexec lisp localstate man man1 man2 man3
242 man4 man5 man6 man7 man8 man9 oldinclude pdf
243 pkgdatadir pkgincludedir pkglibdir ps sbin
244 sharedstate sysconf));
246 # Copyright on generated Makefile.ins.
247 my $gen_copyright = "\
248 # Copyright (C) 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002,
249 # 2003, 2004, 2005, 2006 Free Software Foundation, Inc.
250 # This Makefile.in is free software; the Free Software Foundation
251 # gives unlimited permission to copy and/or distribute it,
252 # with or without modifications, as long as this notice is preserved.
254 # This program is distributed in the hope that it will be useful,
255 # but WITHOUT ANY WARRANTY, to the extent permitted by law; without
256 # even the implied warranty of MERCHANTABILITY or FITNESS FOR A
257 # PARTICULAR PURPOSE.
258 ";
260 # These constants are returned by lang_*_rewrite functions.
261 # LANG_SUBDIR means that the resulting object file should be in a
262 # subdir if the source file is. In this case the file name cannot
263 # have `..' components.
264 use constant LANG_IGNORE => 0;
265 use constant LANG_PROCESS => 1;
266 use constant LANG_SUBDIR => 2;
268 # These are used when keeping track of whether an object can be built
269 # by two different paths.
270 use constant COMPILE_LIBTOOL => 1;
271 use constant COMPILE_ORDINARY => 2;
273 # We can't always associate a location to a variable or a rule,
274 # when its defined by Automake. We use INTERNAL in this case.
275 use constant INTERNAL => new Automake::Location;
276 \f
278 ## ---------------------------------- ##
279 ## Variables related to the options. ##
280 ## ---------------------------------- ##
282 # TRUE if we should always generate Makefile.in.
283 my $force_generation = 1;
285 # From the Perl manual.
286 my $symlink_exists = (eval 'symlink ("", "");', $@ eq '');
288 # TRUE if missing standard files should be installed.
289 my $add_missing = 0;
291 # TRUE if we should copy missing files; otherwise symlink if possible.
292 my $copy_missing = 0;
294 # TRUE if we should always update files that we know about.
295 my $force_missing = 0;
298 ## ---------------------------------------- ##
299 ## Variables filled during files scanning. ##
300 ## ---------------------------------------- ##
302 # Name of the configure.ac file.
303 my $configure_ac;
305 # Files found by scanning configure.ac for LIBOBJS.
306 my %libsources = ();
308 # Names used in AC_CONFIG_HEADER call.
309 my @config_headers = ();
311 # Names used in AC_CONFIG_LINKS call.
312 my @config_links = ();
314 # Directory where output files go. Actually, output files are
315 # relative to this directory.
316 my $output_directory;
318 # List of Makefile.am's to process, and their corresponding outputs.
319 my @input_files = ();
320 my %output_files = ();
322 # Complete list of Makefile.am's that exist.
323 my @configure_input_files = ();
325 # List of files in AC_CONFIG_FILES/AC_OUTPUT without Makefile.am's,
326 # and their outputs.
327 my @other_input_files = ();
328 # Where each AC_CONFIG_FILES/AC_OUTPUT/AC_CONFIG_LINK/AC_CONFIG_HEADER appears.
329 # The keys are the files created by these macros.
330 my %ac_config_files_location = ();
332 # Directory to search for configure-required files. This
333 # will be computed by &locate_aux_dir and can be set using
334 # AC_CONFIG_AUX_DIR in configure.ac.
335 # $CONFIG_AUX_DIR is the `raw' directory, valid only in the source-tree.
336 my $config_aux_dir = '';
337 my $config_aux_dir_set_in_configure_ac = 0;
338 # $AM_CONFIG_AUX_DIR is prefixed with $(top_srcdir), so it can be used
339 # in Makefiles.
340 my $am_config_aux_dir = '';
342 # Directory to search for AC_LIBSOURCE files, as set by AC_CONFIG_LIBOBJ_DIR
343 # in configure.ac.
344 my $config_libobj_dir = '';
346 # Whether AM_GNU_GETTEXT has been seen in configure.ac.
347 my $seen_gettext = 0;
348 # Whether AM_GNU_GETTEXT([external]) is used.
349 my $seen_gettext_external = 0;
350 # Where AM_GNU_GETTEXT appears.
351 my $ac_gettext_location;
353 # Lists of tags supported by Libtool.
354 my %libtool_tags = ();
355 # 1 if Libtool uses LT_SUPPORTED_TAG. If it does, then it also
356 # uses AC_REQUIRE_AUX_FILE.
357 my $libtool_new_api = 0;
359 # Most important AC_CANONICAL_* macro seen so far.
360 my $seen_canonical = 0;
361 # Location of that macro.
362 my $canonical_location;
364 # Where AM_MAINTAINER_MODE appears.
365 my $seen_maint_mode;
367 # Actual version we've seen.
368 my $package_version = '';
370 # Where version is defined.
371 my $package_version_location;
373 # TRUE if we've seen AC_ENABLE_MULTILIB.
374 my $seen_multilib = 0;
376 # TRUE if we've seen AM_PROG_CC_C_O
377 my $seen_cc_c_o = 0;
379 # Location of AC_REQUIRE_AUX_FILE calls, indexed by their argument.
380 my %required_aux_file = ();
382 # Where AM_INIT_AUTOMAKE is called;
383 my $seen_init_automake = 0;
385 # TRUE if we've seen AM_AUTOMAKE_VERSION.
386 my $seen_automake_version = 0;
388 # Hash table of discovered configure substitutions. Keys are names,
389 # values are `FILE:LINE' strings which are used by error message
390 # generation.
391 my %configure_vars = ();
393 # Files included by $configure_ac.
394 my @configure_deps = ();
396 # Greatest timestamp of configure's dependencies.
397 my $configure_deps_greatest_timestamp = 0;
399 # Hash table of AM_CONDITIONAL variables seen in configure.
400 my %configure_cond = ();
402 # This maps extensions onto language names.
403 my %extension_map = ();
405 # List of the DIST_COMMON files we discovered while reading
406 # configure.in
407 my $configure_dist_common = '';
409 # This maps languages names onto objects.
410 my %languages = ();
411 # Maps each linker variable onto a language object.
412 my %link_languages = ();
414 # List of targets we must always output.
415 # FIXME: Complete, and remove falsely required targets.
416 my %required_targets =
417 (
418 'all' => 1,
419 'dvi' => 1,
420 'pdf' => 1,
421 'ps' => 1,
422 'info' => 1,
423 'install-info' => 1,
424 'install' => 1,
425 'install-data' => 1,
426 'install-exec' => 1,
427 'uninstall' => 1,
429 # FIXME: Not required, temporary hacks.
430 # Well, actually they are sort of required: the -recursive
431 # targets will run them anyway...
432 'dvi-am' => 1,
433 'pdf-am' => 1,
434 'ps-am' => 1,
435 'info-am' => 1,
436 'install-data-am' => 1,
437 'install-exec-am' => 1,
438 'installcheck-am' => 1,
439 'uninstall-am' => 1,
441 'install-man' => 1,
442 );
444 # Set to 1 if this run will create the Makefile.in that distribute
445 # the files in config_aux_dir.
446 my $automake_will_process_aux_dir = 0;
448 # The name of the Makefile currently being processed.
449 my $am_file = 'BUG';
450 \f
452 ################################################################
454 ## ------------------------------------------ ##
455 ## Variables reset by &initialize_per_input. ##
456 ## ------------------------------------------ ##
458 # Basename and relative dir of the input file.
459 my $am_file_name;
460 my $am_relative_dir;
462 # Same but wrt Makefile.in.
463 my $in_file_name;
464 my $relative_dir;
466 # Relative path to the top directory.
467 my $topsrcdir;
469 # Greatest timestamp of the output's dependencies (excluding
470 # configure's dependencies).
471 my $output_deps_greatest_timestamp;
473 # These two variables are used when generating each Makefile.in.
474 # They hold the Makefile.in until it is ready to be printed.
475 my $output_rules;
476 my $output_vars;
477 my $output_trailer;
478 my $output_all;
479 my $output_header;
481 # This is the conditional stack, updated on if/else/endif, and
482 # used to build Condition objects.
483 my @cond_stack;
485 # This holds the set of included files.
486 my @include_stack;
488 # This holds a list of directories which we must create at `dist'
489 # time. This is used in some strange scenarios involving weird
490 # AC_OUTPUT commands.
491 my %dist_dirs;
493 # List of dependencies for the obvious targets.
494 my @all;
495 my @check;
496 my @check_tests;
498 # Keys in this hash table are files to delete. The associated
499 # value tells when this should happen (MOSTLY_CLEAN, DIST_CLEAN, etc.)
500 my %clean_files;
502 # Keys in this hash table are object files or other files in
503 # subdirectories which need to be removed. This only holds files
504 # which are created by compilations. The value in the hash indicates
505 # when the file should be removed.
506 my %compile_clean_files;
508 # Keys in this hash table are directories where we expect to build a
509 # libtool object. We use this information to decide what directories
510 # to delete.
511 my %libtool_clean_directories;
513 # Value of `$(SOURCES)', used by tags.am.
514 my @sources;
515 # Sources which go in the distribution.
516 my @dist_sources;
518 # This hash maps object file names onto their corresponding source
519 # file names. This is used to ensure that each object is created
520 # by a single source file.
521 my %object_map;
523 # This hash maps object file names onto an integer value representing
524 # whether this object has been built via ordinary compilation or
525 # libtool compilation (the COMPILE_* constants).
526 my %object_compilation_map;
529 # This keeps track of the directories for which we've already
530 # created dirstamp code. Keys are directories, values are stamp files.
531 # Several keys can share the same stamp files if they are equivalent
532 # (as are `.//foo' and `foo').
533 my %directory_map;
535 # All .P files.
536 my %dep_files;
538 # This is a list of all targets to run during "make dist".
539 my @dist_targets;
541 # Keep track of all programs declared in this Makefile, without
542 # $(EXEEXT). @substitution@ are not listed.
543 my %known_programs;
545 # Keys in this hash are the basenames of files which must depend on
546 # ansi2knr. Values are either the empty string, or the directory in
547 # which the ANSI source file appears; the directory must have a
548 # trailing `/'.
549 my %de_ansi_files;
551 # This is the name of the redirect `all' target to use.
552 my $all_target;
554 # This keeps track of which extensions we've seen (that we care
555 # about).
556 my %extension_seen;
558 # This is random scratch space for the language finish functions.
559 # Don't randomly overwrite it; examine other uses of keys first.
560 my %language_scratch;
562 # We keep track of which objects need special (per-executable)
563 # handling on a per-language basis.
564 my %lang_specific_files;
566 # This is set when `handle_dist' has finished. Once this happens,
567 # we should no longer push on dist_common.
568 my $handle_dist_run;
570 # Used to store a set of linkers needed to generate the sources currently
571 # under consideration.
572 my %linkers_used;
574 # True if we need `LINK' defined. This is a hack.
575 my $need_link;
577 # Was get_object_extension run?
578 # FIXME: This is a hack. a better switch should be found.
579 my $get_object_extension_was_run;
581 # Record each file processed by make_paragraphs.
582 my %transformed_files;
584 # Cache each file processed by make_paragraphs.
585 # (This is different from %transformed_files because
586 # %transformed_files is reset for each file while %am_file_cache
587 # it global to the run.)
588 my %am_file_cache;
590 ################################################################
592 # var_SUFFIXES_trigger ($TYPE, $VALUE)
593 # ------------------------------------
594 # This is called by Automake::Variable::define() when SUFFIXES
595 # is defined ($TYPE eq '') or appended ($TYPE eq '+').
596 # The work here needs to be performed as a side-effect of the
597 # macro_define() call because SUFFIXES definitions impact
598 # on $KNOWN_EXTENSIONS_PATTERN which is used used when parsing
599 # the input am file.
600 sub var_SUFFIXES_trigger ($$)
601 {
602 my ($type, $value) = @_;
603 accept_extensions (split (' ', $value));
604 }
605 Automake::Variable::hook ('SUFFIXES', \&var_SUFFIXES_trigger);
607 ################################################################
609 ## --------------------------------- ##
610 ## Forward subroutine declarations. ##
611 ## --------------------------------- ##
612 sub register_language (%);
613 sub file_contents_internal ($$$%);
614 sub define_files_variable ($\@$$);
617 # &initialize_per_input ()
618 # ------------------------
619 # (Re)-Initialize per-Makefile.am variables.
620 sub initialize_per_input ()
621 {
622 reset_local_duplicates ();
624 $am_file_name = '';
625 $am_relative_dir = '';
627 $in_file_name = '';
628 $relative_dir = '';
630 $output_deps_greatest_timestamp = 0;
632 $output_rules = '';
633 $output_vars = '';
634 $output_trailer = '';
635 $output_all = '';
636 $output_header = '';
638 Automake::Options::reset;
639 Automake::Variable::reset;
640 Automake::Rule::reset;
642 @cond_stack = ();
644 @include_stack = ();
646 %dist_dirs = ();
648 @all = ();
649 @check = ();
650 @check_tests = ();
652 %clean_files = ();
654 @sources = ();
655 @dist_sources = ();
657 %object_map = ();
658 %object_compilation_map = ();
660 %directory_map = ();
662 %dep_files = ();
664 @dist_targets = ();
666 %known_programs = ();
668 %de_ansi_files = ();
670 $all_target = '';
672 %extension_seen = ();
674 %language_scratch = ();
676 %lang_specific_files = ();
678 $handle_dist_run = 0;
680 $need_link = 0;
682 $get_object_extension_was_run = 0;
684 %compile_clean_files = ();
686 # We always include `.'. This isn't strictly correct.
687 %libtool_clean_directories = ('.' => 1);
689 %transformed_files = ();
690 }
693 ################################################################
695 # Initialize our list of languages that are internally supported.
697 # C.
698 register_language ('name' => 'c',
699 'Name' => 'C',
700 'config_vars' => ['CC'],
701 'ansi' => 1,
702 'autodep' => '',
703 'flags' => ['CFLAGS', 'CPPFLAGS'],
704 'compiler' => 'COMPILE',
705 'compile' => '$(CC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS) $(CPPFLAGS) $(AM_CFLAGS) $(CFLAGS)',
706 'lder' => 'CCLD',
707 'ld' => '$(CC)',
708 'linker' => 'LINK',
709 'link' => '$(CCLD) $(AM_CFLAGS) $(CFLAGS) $(AM_LDFLAGS) $(LDFLAGS) -o $@',
710 'compile_flag' => '-c',
711 'libtool_tag' => 'CC',
712 'extensions' => ['.c'],
713 '_finish' => \&lang_c_finish);
715 # C++.
716 register_language ('name' => 'cxx',
717 'Name' => 'C++',
718 'config_vars' => ['CXX'],
719 'linker' => 'CXXLINK',
720 'link' => '$(CXXLD) $(AM_CXXFLAGS) $(CXXFLAGS) $(AM_LDFLAGS) $(LDFLAGS) -o $@',
721 'autodep' => 'CXX',
722 'flags' => ['CXXFLAGS', 'CPPFLAGS'],
723 'compile' => '$(CXX) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS) $(CPPFLAGS) $(AM_CXXFLAGS) $(CXXFLAGS)',
724 'compiler' => 'CXXCOMPILE',
725 'compile_flag' => '-c',
726 'output_flag' => '-o',
727 'libtool_tag' => 'CXX',
728 'lder' => 'CXXLD',
729 'ld' => '$(CXX)',
730 'pure' => 1,
731 'extensions' => ['.c++', '.cc', '.cpp', '.cxx', '.C']);
733 # Objective C.
734 register_language ('name' => 'objc',
735 'Name' => 'Objective C',
736 'config_vars' => ['OBJC'],
737 'linker' => 'OBJCLINK',,
738 'link' => '$(OBJCLD) $(AM_OBJCFLAGS) $(OBJCFLAGS) $(AM_LDFLAGS) $(LDFLAGS) -o $@',
739 'autodep' => 'OBJC',
740 'flags' => ['OBJCFLAGS', 'CPPFLAGS'],
741 'compile' => '$(OBJC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS) $(CPPFLAGS) $(AM_OBJCFLAGS) $(OBJCFLAGS)',
742 'compiler' => 'OBJCCOMPILE',
743 'compile_flag' => '-c',
744 'output_flag' => '-o',
745 'lder' => 'OBJCLD',
746 'ld' => '$(OBJC)',
747 'pure' => 1,
748 'extensions' => ['.m']);
750 # Headers.
751 register_language ('name' => 'header',
752 'Name' => 'Header',
753 'extensions' => ['.h', '.H', '.hxx', '.h++', '.hh',
754 '.hpp', '.inc'],
755 # No output.
756 'output_extensions' => sub { return () },
757 # Nothing to do.
758 '_finish' => sub { });
760 # Yacc (C & C++).
761 register_language ('name' => 'yacc',
762 'Name' => 'Yacc',
763 'config_vars' => ['YACC'],
764 'flags' => ['YFLAGS'],
765 'compile' => '$(YACC) $(YFLAGS) $(AM_YFLAGS)',
766 'compiler' => 'YACCCOMPILE',
767 'extensions' => ['.y'],
768 'output_extensions' => sub { (my $ext = $_[0]) =~ tr/y/c/;
769 return ($ext,) },
770 'rule_file' => 'yacc',
771 '_finish' => \&lang_yacc_finish,
772 '_target_hook' => \&lang_yacc_target_hook,
773 'nodist_specific' => 1);
774 register_language ('name' => 'yaccxx',
775 'Name' => 'Yacc (C++)',
776 'config_vars' => ['YACC'],
777 'rule_file' => 'yacc',
778 'flags' => ['YFLAGS'],
779 'compiler' => 'YACCCOMPILE',
780 'compile' => '$(YACC) $(YFLAGS) $(AM_YFLAGS)',
781 'extensions' => ['.y++', '.yy', '.yxx', '.ypp'],
782 'output_extensions' => sub { (my $ext = $_[0]) =~ tr/y/c/;
783 return ($ext,) },
784 '_finish' => \&lang_yacc_finish,
785 '_target_hook' => \&lang_yacc_target_hook,
786 'nodist_specific' => 1);
788 # Lex (C & C++).
789 register_language ('name' => 'lex',
790 'Name' => 'Lex',
791 'config_vars' => ['LEX'],
792 'rule_file' => 'lex',
793 'flags' => ['LFLAGS'],
794 'compile' => '$(LEX) $(LFLAGS) $(AM_LFLAGS)',
795 'compiler' => 'LEXCOMPILE',
796 'extensions' => ['.l'],
797 'output_extensions' => sub { (my $ext = $_[0]) =~ tr/l/c/;
798 return ($ext,) },
799 '_finish' => \&lang_lex_finish,
800 '_target_hook' => \&lang_lex_target_hook,
801 'nodist_specific' => 1);
802 register_language ('name' => 'lexxx',
803 'Name' => 'Lex (C++)',
804 'config_vars' => ['LEX'],
805 'rule_file' => 'lex',
806 'flags' => ['LFLAGS'],
807 'compile' => '$(LEX) $(LFLAGS) $(AM_LFLAGS)',
808 'compiler' => 'LEXCOMPILE',
809 'extensions' => ['.l++', '.ll', '.lxx', '.lpp'],
810 'output_extensions' => sub { (my $ext = $_[0]) =~ tr/l/c/;
811 return ($ext,) },
812 '_finish' => \&lang_lex_finish,
813 '_target_hook' => \&lang_lex_target_hook,
814 'nodist_specific' => 1);
816 # Assembler.
817 register_language ('name' => 'asm',
818 'Name' => 'Assembler',
819 'config_vars' => ['CCAS', 'CCASFLAGS'],
821 'flags' => ['CCASFLAGS'],
822 # Users can set AM_CCASFLAGS to include DEFS, INCLUDES,
823 # or anything else required. They can also set CCAS.
824 'compile' => '$(CCAS) $(AM_CCASFLAGS) $(CCASFLAGS)',
825 'compiler' => 'CCASCOMPILE',
826 'compile_flag' => '-c',
827 'extensions' => ['.s'],
829 # With assembly we still use the C linker.
830 '_finish' => \&lang_c_finish);
832 # Preprocessed Assembler.
833 register_language ('name' => 'cppasm',
834 'Name' => 'Preprocessed Assembler',
835 'config_vars' => ['CCAS', 'CCASFLAGS'],
837 'autodep' => 'CCAS',
838 'flags' => ['CCASFLAGS', 'CPPFLAGS'],
839 # Users can set AM_CCASFLAGS to include DEFS, INCLUDES,
840 # or anything else required beyond AM_CPPFLAGS. They
841 # can also set CCAS.
842 'compile' => '$(CCAS) $(AM_CPPFLAGS) $(CPPFLAGS) $(AM_CCASFLAGS) $(CCASFLAGS)',
843 'compiler' => 'CPPASCOMPILE',
844 'compile_flag' => '-c',
845 'extensions' => ['.S'],
847 # With assembly we still use the C linker.
848 '_finish' => \&lang_c_finish);
850 # Fortran 77
851 register_language ('name' => 'f77',
852 'Name' => 'Fortran 77',
853 'linker' => 'F77LINK',
854 'link' => '$(F77LD) $(AM_FFLAGS) $(FFLAGS) $(AM_LDFLAGS) $(LDFLAGS) -o $@',
855 'flags' => ['FFLAGS'],
856 'compile' => '$(F77) $(AM_FFLAGS) $(FFLAGS)',
857 'compiler' => 'F77COMPILE',
858 'compile_flag' => '-c',
859 'output_flag' => '-o',
860 'libtool_tag' => 'F77',
861 'lder' => 'F77LD',
862 'ld' => '$(F77)',
863 'pure' => 1,
864 'extensions' => ['.f', '.for']);
866 # Fortran
867 register_language ('name' => 'fc',
868 'Name' => 'Fortran',
869 'linker' => 'FCLINK',
870 'link' => '$(FCLD) $(AM_FCFLAGS) $(FCFLAGS) $(AM_LDFLAGS) $(LDFLAGS) -o $@',
871 'flags' => ['FCFLAGS'],
872 'compile' => '$(FC) $(AM_FCFLAGS) $(FCFLAGS)',
873 'compiler' => 'FCCOMPILE',
874 'compile_flag' => '-c',
875 'output_flag' => '-o',
876 'lder' => 'FCLD',
877 'ld' => '$(FC)',
878 'pure' => 1,
879 'extensions' => ['.f90', '.f95']);
881 # Preprocessed Fortran
882 register_language ('name' => 'ppfc',
883 'Name' => 'Preprocessed Fortran',
884 'config_vars' => ['FC'],
885 'linker' => 'FCLINK',
886 'link' => '$(FCLD) $(AM_FCFLAGS) $(FCFLAGS) $(AM_LDFLAGS) $(LDFLAGS) -o $@',
887 'lder' => 'FCLD',
888 'ld' => '$(FC)',
889 'flags' => ['FCFLAGS', 'CPPFLAGS'],
890 'compiler' => 'PPFCCOMPILE',
891 'compile' => '$(FC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS) $(CPPFLAGS) $(AM_FCFLAGS) $(FCFLAGS)',
892 'compile_flag' => '-c',
893 'output_flag' => '-o',
894 'libtool_tag' => 'FC',
895 'pure' => 1,
896 'extensions' => ['.F90','.F95']);
898 # Preprocessed Fortran 77
899 #
900 # The current support for preprocessing Fortran 77 just involves
901 # passing `$(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS)
902 # $(CPPFLAGS)' as additional flags to the Fortran 77 compiler, since
903 # this is how GNU Make does it; see the `GNU Make Manual, Edition 0.51
904 # for `make' Version 3.76 Beta' (specifically, from info file
905 # `(make)Catalogue of Rules').
906 #
907 # A better approach would be to write an Autoconf test
908 # (i.e. AC_PROG_FPP) for a Fortran 77 preprocessor, because not all
909 # Fortran 77 compilers know how to do preprocessing. The Autoconf
910 # macro AC_PROG_FPP should test the Fortran 77 compiler first for
911 # preprocessing capabilities, and then fall back on cpp (if cpp were
912 # available).
913 register_language ('name' => 'ppf77',
914 'Name' => 'Preprocessed Fortran 77',
915 'config_vars' => ['F77'],
916 'linker' => 'F77LINK',
917 'link' => '$(F77LD) $(AM_FFLAGS) $(FFLAGS) $(AM_LDFLAGS) $(LDFLAGS) -o $@',
918 'lder' => 'F77LD',
919 'ld' => '$(F77)',
920 'flags' => ['FFLAGS', 'CPPFLAGS'],
921 'compiler' => 'PPF77COMPILE',
922 'compile' => '$(F77) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS) $(CPPFLAGS) $(AM_FFLAGS) $(FFLAGS)',
923 'compile_flag' => '-c',
924 'output_flag' => '-o',
925 'libtool_tag' => 'F77',
926 'pure' => 1,
927 'extensions' => ['.F']);
929 # Ratfor.
930 register_language ('name' => 'ratfor',
931 'Name' => 'Ratfor',
932 'config_vars' => ['F77'],
933 'linker' => 'F77LINK',
934 'link' => '$(F77LD) $(AM_FFLAGS) $(FFLAGS) $(AM_LDFLAGS) $(LDFLAGS) -o $@',
935 'lder' => 'F77LD',
936 'ld' => '$(F77)',
937 'flags' => ['RFLAGS', 'FFLAGS'],
938 # FIXME also FFLAGS.
939 'compile' => '$(F77) $(AM_FFLAGS) $(FFLAGS) $(AM_RFLAGS) $(RFLAGS)',
940 'compiler' => 'RCOMPILE',
941 'compile_flag' => '-c',
942 'output_flag' => '-o',
943 'libtool_tag' => 'F77',
944 'pure' => 1,
945 'extensions' => ['.r']);
947 # Java via gcj.
948 register_language ('name' => 'java',
949 'Name' => 'Java',
950 'config_vars' => ['GCJ'],
951 'linker' => 'GCJLINK',
952 'link' => '$(GCJLD) $(AM_GCJFLAGS) $(GCJFLAGS) $(AM_LDFLAGS) $(LDFLAGS) -o $@',
953 'autodep' => 'GCJ',
954 'flags' => ['GCJFLAGS'],
955 'compile' => '$(GCJ) $(AM_GCJFLAGS) $(GCJFLAGS)',
956 'compiler' => 'GCJCOMPILE',
957 'compile_flag' => '-c',
958 'output_flag' => '-o',
959 'libtool_tag' => 'GCJ',
960 'lder' => 'GCJLD',
961 'ld' => '$(GCJ)',
962 'pure' => 1,
963 'extensions' => ['.java', '.class', '.zip', '.jar']);
965 ################################################################
967 # Error reporting functions.
969 # err_am ($MESSAGE, [%OPTIONS])
970 # -----------------------------
971 # Uncategorized errors about the current Makefile.am.
972 sub err_am ($;%)
973 {
974 msg_am ('error', @_);
975 }
977 # err_ac ($MESSAGE, [%OPTIONS])
978 # -----------------------------
979 # Uncategorized errors about configure.ac.
980 sub err_ac ($;%)
981 {
982 msg_ac ('error', @_);
983 }
985 # msg_am ($CHANNEL, $MESSAGE, [%OPTIONS])
986 # ---------------------------------------
987 # Messages about about the current Makefile.am.
988 sub msg_am ($$;%)
989 {
990 my ($channel, $msg, %opts) = @_;
991 msg $channel, "${am_file}.am", $msg, %opts;
992 }
994 # msg_ac ($CHANNEL, $MESSAGE, [%OPTIONS])
995 # ---------------------------------------
996 # Messages about about configure.ac.
997 sub msg_ac ($$;%)
998 {
999 my ($channel, $msg, %opts) = @_;
1000 msg $channel, $configure_ac, $msg, %opts;
1001 }
1003 ################################################################
1005 # subst ($TEXT)
1006 # -------------
1007 # Return a configure-style substitution using the indicated text.
1008 # We do this to avoid having the substitutions directly in automake.in;
1009 # when we do that they are sometimes removed and this causes confusion
1010 # and bugs.
1011 sub subst ($)
1012 {
1013 my ($text) = @_;
1014 return '@' . $text . '@';
1015 }
1017 ################################################################
1020 # $BACKPATH
1021 # &backname ($REL-DIR)
1022 # --------------------
1023 # If I `cd $REL-DIR', then to come back, I should `cd $BACKPATH'.
1024 # For instance `src/foo' => `../..'.
1025 # Works with non strictly increasing paths, i.e., `src/../lib' => `..'.
1026 sub backname ($)
1027 {
1028 my ($file) = @_;
1029 my @res;
1030 foreach (split (/\//, $file))
1031 {
1032 next if $_ eq '.' || $_ eq '';
1033 if ($_ eq '..')
1034 {
1035 pop @res;
1036 }
1037 else
1038 {
1039 push (@res, '..');
1040 }
1041 }
1042 return join ('/', @res) || '.';
1043 }
1045 ################################################################
1048 # Handle AUTOMAKE_OPTIONS variable. Return 1 on error, 0 otherwise.
1049 sub handle_options
1050 {
1051 my $var = var ('AUTOMAKE_OPTIONS');
1052 if ($var)
1053 {
1054 # FIXME: We should disallow conditional definitions of AUTOMAKE_OPTIONS.
1055 if (process_option_list ($var->rdef (TRUE)->location,
1056 $var->value_as_list_recursive (cond_filter =>
1057 TRUE)))
1058 {
1059 return 1;
1060 }
1061 }
1063 if ($strictness == GNITS)
1064 {
1065 set_option ('readme-alpha', INTERNAL);
1066 set_option ('std-options', INTERNAL);
1067 set_option ('check-news', INTERNAL);
1068 }
1070 return 0;
1071 }
1073 # shadow_unconditionally ($varname, $where)
1074 # -----------------------------------------
1075 # Return a $(variable) that contains all possible values
1076 # $varname can take.
1077 # If the VAR wasn't defined conditionally, return $(VAR).
1078 # Otherwise we create a am__VAR_DIST variable which contains
1079 # all possible values, and return $(am__VAR_DIST).
1080 sub shadow_unconditionally ($$)
1081 {
1082 my ($varname, $where) = @_;
1083 my $var = var $varname;
1084 if ($var->has_conditional_contents)
1085 {
1086 $varname = "am__${varname}_DIST";
1087 my @files = uniq ($var->value_as_list_recursive);
1088 define_pretty_variable ($varname, TRUE, $where, @files);
1089 }
1090 return "\$($varname)"
1091 }
1093 # get_object_extension ($EXTENSION)
1094 # ---------------------------------
1095 # Prefix $EXTENSION with $U if ansi2knr is in use.
1096 sub get_object_extension ($)
1097 {
1098 my ($extension) = @_;
1100 # Check for automatic de-ANSI-fication.
1101 $extension = '$U' . $extension
1102 if option 'ansi2knr';
1104 $get_object_extension_was_run = 1;
1106 return $extension;
1107 }
1109 # check_user_variables (@LIST)
1110 # ----------------------------
1111 # Make sure each variable VAR in @LIST do not exist, suggest using AM_VAR
1112 # otherwise.
1113 sub check_user_variables (@)
1114 {
1115 my @dont_override = @_;
1116 foreach my $flag (@dont_override)
1117 {
1118 my $var = var $flag;
1119 if ($var)
1120 {
1121 for my $cond ($var->conditions->conds)
1122 {
1123 if ($var->rdef ($cond)->owner == VAR_MAKEFILE)
1124 {
1125 msg_cond_var ('gnu', $cond, $flag,
1126 "`$flag' is a user variable, "
1127 . "you should not override it;\n"
1128 . "use `AM_$flag' instead.");
1129 }
1130 }
1131 }
1132 }
1133 }
1135 # Call finish function for each language that was used.
1136 sub handle_languages
1137 {
1138 if (! option 'no-dependencies')
1139 {
1140 # Include auto-dep code. Don't include it if DEP_FILES would
1141 # be empty.
1142 if (&saw_sources_p (0) && keys %dep_files)
1143 {
1144 # Set location of depcomp.
1145 &define_variable ('depcomp',
1146 "\$(SHELL) $am_config_aux_dir/depcomp",
1147 INTERNAL);
1148 &define_variable ('am__depfiles_maybe', 'depfiles', INTERNAL);
1150 require_conf_file ("$am_file.am", FOREIGN, 'depcomp');
1152 my @deplist = sort keys %dep_files;
1153 # Generate each `include' individually. Irix 6 make will
1154 # not properly include several files resulting from a
1155 # variable expansion; generating many separate includes
1156 # seems safest.
1157 $output_rules .= "\n";
1158 foreach my $iter (@deplist)
1159 {
1160 $output_rules .= (subst ('AMDEP_TRUE')
1161 . subst ('am__include')
1162 . ' '
1163 . subst ('am__quote')
1164 . $iter
1165 . subst ('am__quote')
1166 . "\n");
1167 }
1169 # Compute the set of directories to remove in distclean-depend.
1170 my @depdirs = uniq (map { dirname ($_) } @deplist);
1171 $output_rules .= &file_contents ('depend',
1172 new Automake::Location,
1173 DEPDIRS => "@depdirs");
1174 }
1175 }
1176 else
1177 {
1178 &define_variable ('depcomp', '', INTERNAL);
1179 &define_variable ('am__depfiles_maybe', '', INTERNAL);
1180 }
1182 my %done;
1184 # Is the c linker needed?
1185 my $needs_c = 0;
1186 foreach my $ext (sort keys %extension_seen)
1187 {
1188 next unless $extension_map{$ext};
1190 my $lang = $languages{$extension_map{$ext}};
1192 my $rule_file = $lang->rule_file || 'depend2';
1194 # Get information on $LANG.
1195 my $pfx = $lang->autodep;
1196 my $fpfx = ($pfx eq '') ? 'CC' : $pfx;
1198 my ($AMDEP, $FASTDEP) =
1199 (option 'no-dependencies' || $lang->autodep eq 'no')
1200 ? ('FALSE', 'FALSE') : ('AMDEP', "am__fastdep$fpfx");
1202 my %transform = ('EXT' => $ext,
1203 'PFX' => $pfx,
1204 'FPFX' => $fpfx,
1205 'AMDEP' => $AMDEP,
1206 'FASTDEP' => $FASTDEP,
1207 '-c' => $lang->compile_flag || '',
1208 'MORE-THAN-ONE'
1209 => (count_files_for_language ($lang->name) > 1),
1210 # These are not used, but they need to be defined
1211 # so &transform do not complain.
1212 SUBDIROBJ => 0,
1213 'DERIVED-EXT' => 'BUG',
1214 DIST_SOURCE => 1,
1215 );
1217 # Generate the appropriate rules for this extension.
1218 if (((! option 'no-dependencies') && $lang->autodep ne 'no')
1219 || defined $lang->compile)
1220 {
1221 # Some C compilers don't support -c -o. Use it only if really
1222 # needed.
1223 my $output_flag = $lang->output_flag || '';
1224 $output_flag = '-o'
1225 if (! $output_flag
1226 && $lang->name eq 'c'
1227 && option 'subdir-objects');
1229 # Compute a possible derived extension.
1230 # This is not used by depend2.am.
1231 my $der_ext = (&{$lang->output_extensions} ($ext))[0];
1233 # When we output an inference rule like `.c.o:' we
1234 # have two cases to consider: either subdir-objects
1235 # is used, or it is not.
1236 #
1237 # In the latter case the rule is used to build objects
1238 # in the current directory, and dependencies always
1239 # go into `./$(DEPDIR)/'. We can hard-code this value.
1240 #
1241 # In the former case the rule can be used to build
1242 # objects in sub-directories too. Dependencies should
1243 # go into the appropriate sub-directories, e.g.,
1244 # `sub/$(DEPDIR)/'. The value of this directory
1245 # need the be computed on-the-fly.
1246 #
1247 # DEPBASE holds the name of this directory, plus the
1248 # basename part of the object file (extensions Po, TPo,
1249 # Plo, TPlo will be added later as appropriate). It is
1250 # either hardcoded, or a shell variable (`$depbase') that
1251 # will be computed by the rule.
1252 my $depbase =
1253 option ('subdir-objects') ? '$$depbase' : '$(DEPDIR)/$*';
1254 $output_rules .=
1255 file_contents ($rule_file,
1256 new Automake::Location,
1257 %transform,
1258 GENERIC => 1,
1260 'DERIVED-EXT' => $der_ext,
1262 DEPBASE => $depbase,
1263 BASE => '$*',
1264 SOURCE => '$<',
1265 OBJ => '$@',
1266 OBJOBJ => '$@',
1267 LTOBJ => '$@',
1269 COMPILE => '$(' . $lang->compiler . ')',
1270 LTCOMPILE => '$(LT' . $lang->compiler . ')',
1271 -o => $output_flag,
1272 SUBDIROBJ => !! option 'subdir-objects');
1273 }
1275 # Now include code for each specially handled object with this
1276 # language.
1277 my %seen_files = ();
1278 foreach my $file (@{$lang_specific_files{$lang->name}})
1279 {
1280 my ($derived, $source, $obj, $myext, %file_transform) = @$file;
1282 # We might see a given object twice, for instance if it is
1283 # used under different conditions.
1284 next if defined $seen_files{$obj};
1285 $seen_files{$obj} = 1;
1287 prog_error ("found " . $lang->name .
1288 " in handle_languages, but compiler not defined")
1289 unless defined $lang->compile;
1291 my $obj_compile = $lang->compile;
1293 # Rewrite each occurrence of `AM_$flag' in the compile
1294 # rule into `${derived}_$flag' if it exists.
1295 for my $flag (@{$lang->flags})
1296 {
1297 my $val = "${derived}_$flag";
1298 $obj_compile =~ s/\(AM_$flag\)/\($val\)/
1299 if set_seen ($val);
1300 }
1302 my $libtool_tag = '';
1303 if ($lang->libtool_tag && exists $libtool_tags{$lang->libtool_tag})
1304 {
1305 $libtool_tag = '--tag=' . $lang->libtool_tag . ' '
1306 }
1308 my $ptltflags = "${derived}_LIBTOOLFLAGS";
1309 $ptltflags = 'AM_LIBTOOLFLAGS' unless set_seen $ptltflags;
1311 my $obj_ltcompile =
1312 "\$(LIBTOOL) $libtool_tag\$($ptltflags) \$(LIBTOOLFLAGS) "
1313 . "--mode=compile $obj_compile";
1315 # We _need_ `-o' for per object rules.
1316 my $output_flag = $lang->output_flag || '-o';
1318 my $depbase = dirname ($obj);
1319 $depbase = ''
1320 if $depbase eq '.';
1321 $depbase .= '/'
1322 unless $depbase eq '';
1323 $depbase .= '$(DEPDIR)/' . basename ($obj);
1325 # Support for deansified files in subdirectories is ugly
1326 # enough to deserve an explanation.
1327 #
1328 # A Note about normal ansi2knr processing first. On
1329 #
1330 # AUTOMAKE_OPTIONS = ansi2knr
1331 # bin_PROGRAMS = foo
1332 # foo_SOURCES = foo.c
1333 #
1334 # we generate rules similar to:
1335 #
1336 # foo: foo$U.o; link ...
1337 # foo$U.o: foo$U.c; compile ...
1338 # foo_.c: foo.c; ansi2knr ...
1339 #
1340 # this is fairly compact, and will call ansi2knr depending
1341 # on the value of $U (`' or `_').
1342 #
1343 # It's harder with subdir sources. On
1344 #
1345 # AUTOMAKE_OPTIONS = ansi2knr
1346 # bin_PROGRAMS = foo
1347 # foo_SOURCES = sub/foo.c
1348 #
1349 # we have to create foo_.c in the current directory.
1350 # (Unless the user asks 'subdir-objects'.) This is important
1351 # in case the same file (`foo.c') is compiled from other
1352 # directories with different cpp options: foo_.c would
1353 # be preprocessed for only one set of options if it were
1354 # put in the subdirectory.
1355 #
1356 # Because foo$U.o must be built from either foo_.c or
1357 # sub/foo.c we can't be as concise as in the first example.
1358 # Instead we output
1359 #
1360 # foo: foo$U.o; link ...
1361 # foo_.o: foo_.c; compile ...
1362 # foo.o: sub/foo.c; compile ...
1363 # foo_.c: foo.c; ansi2knr ...
1364 #
1365 # This is why we'll now transform $rule_file twice
1366 # if we detect this case.
1367 # A first time we output the compile rule with `$U'
1368 # replaced by `_' and the source directory removed,
1369 # and another time we simply remove `$U'.
1370 #
1371 # Note that at this point $source (as computed by
1372 # &handle_single_transform) is `sub/foo$U.c'.
1373 # This can be confusing: it can be used as-is when
1374 # subdir-objects is set, otherwise you have to know
1375 # it really means `foo_.c' or `sub/foo.c'.
1376 my $objdir = dirname ($obj);
1377 my $srcdir = dirname ($source);
1378 if ($lang->ansi && $obj =~ /\$U/)
1379 {
1380 prog_error "`$obj' contains \$U, but `$source' doesn't."
1381 if $source !~ /\$U/;
1383 (my $source_ = $source) =~ s/\$U/_/g;
1384 # Output an additional rule if _.c and .c are not in
1385 # the same directory. (_.c is always in $objdir.)
1386 if ($objdir ne $srcdir)
1387 {
1388 (my $obj_ = $obj) =~ s/\$U/_/g;
1389 (my $depbase_ = $depbase) =~ s/\$U/_/g;
1390 $source_ = basename ($source_);
1392 $output_rules .=
1393 file_contents ($rule_file,
1394 new Automake::Location,
1395 %transform,
1396 GENERIC => 0,
1398 DEPBASE => $depbase_,
1399 BASE => $obj_,
1400 SOURCE => $source_,
1401 OBJ => "$obj_$myext",
1402 OBJOBJ => "$obj_.obj",
1403 LTOBJ => "$obj_.lo",
1405 COMPILE => $obj_compile,
1406 LTCOMPILE => $obj_ltcompile,
1407 -o => $output_flag,
1408 %file_transform);
1409 $obj =~ s/\$U//g;
1410 $depbase =~ s/\$U//g;
1411 $source =~ s/\$U//g;
1412 }
1413 }
1415 $output_rules .=
1416 file_contents ($rule_file,
1417 new Automake::Location,
1418 %transform,
1419 GENERIC => 0,
1421 DEPBASE => $depbase,
1422 BASE => $obj,
1423 SOURCE => $source,
1424 # Use $myext and not `.o' here, in case
1425 # we are actually building a new source
1426 # file -- e.g. via yacc.
1427 OBJ => "$obj$myext",
1428 OBJOBJ => "$obj.obj",
1429 LTOBJ => "$obj.lo",
1431 COMPILE => $obj_compile,
1432 LTCOMPILE => $obj_ltcompile,
1433 -o => $output_flag,
1434 %file_transform);
1435 }
1437 # The rest of the loop is done once per language.
1438 next if defined $done{$lang};
1439 $done{$lang} = 1;
1441 # Load the language dependent Makefile chunks.
1442 my %lang = map { uc ($_) => 0 } keys %languages;
1443 $lang{uc ($lang->name)} = 1;
1444 $output_rules .= file_contents ('lang-compile',
1445 new Automake::Location,
1446 %transform, %lang);
1448 # If the source to a program consists entirely of code from a
1449 # `pure' language, for instance C++ or Fortran 77, then we
1450 # don't need the C compiler code. However if we run into
1451 # something unusual then we do generate the C code. There are
1452 # probably corner cases here that do not work properly.
1453 # People linking Java code to Fortran code deserve pain.
1454 $needs_c ||= ! $lang->pure;
1456 define_compiler_variable ($lang)
1457 if ($lang->compile);
1459 define_linker_variable ($lang)
1460 if ($lang->link);
1462 require_variables ("$am_file.am", $lang->Name . " source seen",
1463 TRUE, @{$lang->config_vars});
1465 # Call the finisher.
1466 $lang->finish;
1468 # Flags listed in `->flags' are user variables (per GNU Standards),
1469 # they should not be overridden in the Makefile...
1470 my @dont_override = @{$lang->flags};
1471 # ... and so is LDFLAGS.
1472 push @dont_override, 'LDFLAGS' if $lang->link;
1474 check_user_variables @dont_override;
1475 }
1477 # If the project is entirely C++ or entirely Fortran 77 (i.e., 1
1478 # suffix rule was learned), don't bother with the C stuff. But if
1479 # anything else creeps in, then use it.
1480 $needs_c = 1
1481 if $need_link || suffix_rules_count > 1;
1483 if ($needs_c)
1484 {
1485 &define_compiler_variable ($languages{'c'})
1486 unless defined $done{$languages{'c'}};
1487 define_linker_variable ($languages{'c'});
1488 }
1489 }
1492 # append_exeext { PREDICATE } $MACRO
1493 # ----------------------------------
1494 # Append $(EXEEXT) to each filename in $F appearing in the Makefile
1495 # variable $MACRO if &PREDICATE($F) is true. @substitutions@ are
1496 # ignored.
1497 #
1498 # This is typically used on all filenames of *_PROGRAMS, and filenames
1499 # of TESTS that are programs.
1500 sub append_exeext (&$)
1501 {
1502 my ($pred, $macro) = @_;
1504 transform_variable_recursively
1505 ($macro, $macro, 'am__EXEEXT', 0, INTERNAL,
1506 sub {
1507 my ($subvar, $val, $cond, $full_cond) = @_;
1508 # Append $(EXEEXT) unless the user did it already, or it's a
1509 # @substitution@.
1510 $val .= '$(EXEEXT)'
1511 if $val !~ /(?:\$\(EXEEXT\)$|^[@]\w+[@]$)/ && &$pred ($val);
1512 return $val;
1513 });
1514 }
1517 # Check to make sure a source defined in LIBOBJS is not explicitly
1518 # mentioned. This is a separate function (as opposed to being inlined
1519 # in handle_source_transform) because it isn't always appropriate to
1520 # do this check.
1521 sub check_libobjs_sources
1522 {
1523 my ($one_file, $unxformed) = @_;
1525 foreach my $prefix ('', 'EXTRA_', 'dist_', 'nodist_',
1526 'dist_EXTRA_', 'nodist_EXTRA_')
1527 {
1528 my @files;
1529 my $varname = $prefix . $one_file . '_SOURCES';
1530 my $var = var ($varname);
1531 if ($var)
1532 {
1533 @files = $var->value_as_list_recursive;
1534 }
1535 elsif ($prefix eq '')
1536 {
1537 @files = ($unxformed . '.c');
1538 }
1539 else
1540 {
1541 next;
1542 }
1544 foreach my $file (@files)
1545 {
1546 err_var ($prefix . $one_file . '_SOURCES',
1547 "automatically discovered file `$file' should not" .
1548 " be explicitly mentioned")
1549 if defined $libsources{$file};
1550 }
1551 }
1552 }
1555 # @OBJECTS
1556 # handle_single_transform ($VAR, $TOPPARENT, $DERIVED, $OBJ, $FILE, %TRANSFORM)
1557 # -----------------------------------------------------------------------------
1558 # Does much of the actual work for handle_source_transform.
1559 # Arguments are:
1560 # $VAR is the name of the variable that the source filenames come from
1561 # $TOPPARENT is the name of the _SOURCES variable which is being processed
1562 # $DERIVED is the name of resulting executable or library
1563 # $OBJ is the object extension (e.g., `$U.lo')
1564 # $FILE the source file to transform
1565 # %TRANSFORM contains extras arguments to pass to file_contents
1566 # when producing explicit rules
1567 # Result is a list of the names of objects
1568 # %linkers_used will be updated with any linkers needed
1569 sub handle_single_transform ($$$$$%)
1570 {
1571 my ($var, $topparent, $derived, $obj, $_file, %transform) = @_;
1572 my @files = ($_file);
1573 my @result = ();
1574 my $nonansi_obj = $obj;
1575 $nonansi_obj =~ s/\$U//g;
1577 # Turn sources into objects. We use a while loop like this
1578 # because we might add to @files in the loop.
1579 while (scalar @files > 0)
1580 {
1581 $_ = shift @files;
1583 # Configure substitutions in _SOURCES variables are errors.
1584 if (/^\@.*\@$/)
1585 {
1586 my $parent_msg = '';
1587 $parent_msg = "\nand is referred to from `$topparent'"
1588 if $topparent ne $var->name;
1589 err_var ($var,
1590 "`" . $var->name . "' includes configure substitution `$_'"
1591 . $parent_msg . ";\nconfigure " .
1592 "substitutions are not allowed in _SOURCES variables");
1593 next;
1594 }
1596 # If the source file is in a subdirectory then the `.o' is put
1597 # into the current directory, unless the subdir-objects option
1598 # is in effect.
1600 # Split file name into base and extension.
1601 next if ! /^(?:(.*)\/)?([^\/]*)($KNOWN_EXTENSIONS_PATTERN)$/;
1602 my $full = $_;
1603 my $directory = $1 || '';
1604 my $base = $2;
1605 my $extension = $3;
1607 # We must generate a rule for the object if it requires its own flags.
1608 my $renamed = 0;
1609 my ($linker, $object);
1611 # This records whether we've seen a derived source file (e.g.
1612 # yacc output).
1613 my $derived_source = 0;
1615 # This holds the `aggregate context' of the file we are
1616 # currently examining. If the file is compiled with
1617 # per-object flags, then it will be the name of the object.
1618 # Otherwise it will be `AM'. This is used by the target hook
1619 # language function.
1620 my $aggregate = 'AM';
1622 $extension = &derive_suffix ($extension, $nonansi_obj);
1623 my $lang;
1624 if ($extension_map{$extension} &&
1625 ($lang = $languages{$extension_map{$extension}}))
1626 {
1627 # Found the language, so see what it says.
1628 &saw_extension ($extension);
1630 # Do we have per-executable flags for this executable?
1631 my $have_per_exec_flags = 0;
1632 my @peflags = @{$lang->flags};
1633 push @peflags, 'LIBTOOLFLAGS' if $nonansi_obj eq '.lo';
1634 foreach my $flag (@peflags)
1635 {
1636 if (set_seen ("${derived}_$flag"))
1637 {
1638 $have_per_exec_flags = 1;
1639 last;
1640 }
1641 }
1643 # Note: computed subr call. The language rewrite function
1644 # should return one of the LANG_* constants. It could
1645 # also return a list whose first value is such a constant
1646 # and whose second value is a new source extension which
1647 # should be applied. This means this particular language
1648 # generates another source file which we must then process
1649 # further.
1650 my $subr = \&{'lang_' . $lang->name . '_rewrite'};
1651 my ($r, $source_extension)
1652 = &$subr ($directory, $base, $extension,
1653 $nonansi_obj, $have_per_exec_flags, $var);
1654 # Skip this entry if we were asked not to process it.
1655 next if $r == LANG_IGNORE;
1657 # Now extract linker and other info.
1658 $linker = $lang->linker;
1660 my $this_obj_ext;
1661 if (defined $source_extension)
1662 {
1663 $this_obj_ext = $source_extension;
1664 $derived_source = 1;
1665 }
1666 elsif ($lang->ansi)
1667 {
1668 $this_obj_ext = $obj;
1669 }
1670 else
1671 {
1672 $this_obj_ext = $nonansi_obj;
1673 }
1674 $object = $base . $this_obj_ext;
1676 if ($have_per_exec_flags)
1677 {
1678 # We have a per-executable flag in effect for this
1679 # object. In this case we rewrite the object's
1680 # name to ensure it is unique.
1682 # We choose the name `DERIVED_OBJECT' to ensure
1683 # (1) uniqueness, and (2) continuity between
1684 # invocations. However, this will result in a
1685 # name that is too long for losing systems, in
1686 # some situations. So we provide _SHORTNAME to
1687 # override.
1689 my $dname = $derived;
1690 my $var = var ($derived . '_SHORTNAME');
1691 if ($var)
1692 {
1693 # FIXME: should use the same Condition as
1694 # the _SOURCES variable. But this is really
1695 # silly overkill -- nobody should have
1696 # conditional shortnames.
1697 $dname = $var->variable_value;
1698 }
1699 $object = $dname . '-' . $object;
1701 prog_error ($lang->name . " flags defined without compiler")
1702 if ! defined $lang->compile;
1704 $renamed = 1;
1705 }
1707 # If rewrite said it was ok, put the object into a
1708 # subdir.
1709 if ($r == LANG_SUBDIR && $directory ne '')
1710 {
1711 $object = $directory . '/' . $object;
1712 }
1714 # If the object file has been renamed (because per-target
1715 # flags are used) we cannot compile the file with an
1716 # inference rule: we need an explicit rule.
1717 #
1718 # If the source is in a subdirectory and the object is in
1719 # the current directory, we also need an explicit rule.
1720 #
1721 # If both source and object files are in a subdirectory
1722 # (this happens when the subdir-objects option is used),
1723 # then the inference will work.
1724 #
1725 # The latter case deserves a historical note. When the
1726 # subdir-objects option was added on 1999-04-11 it was
1727 # thought that inferences rules would work for
1728 # subdirectory objects too. Later, on 1999-11-22,
1729 # automake was changed to output explicit rules even for
1730 # subdir-objects. Nobody remembers why, but this occured
1731 # soon after the merge of the user-dep-gen-branch so it
1732 # might be related. In late 2003 people complained about
1733 # the size of the generated Makefile.ins (libgcj, with
1734 # 2200+ subdir objects was reported to have a 9MB
1735 # Makefile), so we now rely on inference rules again.
1736 # Maybe we'll run across the same issue as in the past,
1737 # but at least this time we can document it. However since
1738 # dependency tracking has evolved it is possible that
1739 # our old problem no longer exists.
1740 # Using inference rules for subdir-objects has been tested
1741 # with GNU make, Solaris make, Ultrix make, BSD make,
1742 # HP-UX make, and OSF1 make successfully.
1743 if ($renamed
1744 || ($directory ne '' && ! option 'subdir-objects')
1745 # We must also use specific rules for a nodist_ source
1746 # if its language requests it.
1747 || ($lang->nodist_specific && ! $transform{'DIST_SOURCE'}))
1748 {
1749 my $obj_sans_ext = substr ($object, 0,
1750 - length ($this_obj_ext));
1751 my $full_ansi = $full;
1752 if ($lang->ansi && option 'ansi2knr')
1753 {
1754 $full_ansi =~ s/$KNOWN_EXTENSIONS_PATTERN$/\$U$&/;
1755 $obj_sans_ext .= '$U';
1756 }
1758 my @specifics = ($full_ansi, $obj_sans_ext,
1759 # Only use $this_obj_ext in the derived
1760 # source case because in the other case we
1761 # *don't* want $(OBJEXT) to appear here.
1762 ($derived_source ? $this_obj_ext : '.o'));
1764 # If we renamed the object then we want to use the
1765 # per-executable flag name. But if this is simply a
1766 # subdir build then we still want to use the AM_ flag
1767 # name.
1768 if ($renamed)
1769 {
1770 unshift @specifics, $derived;
1771 $aggregate = $derived;
1772 }
1773 else
1774 {
1775 unshift @specifics, 'AM';
1776 }
1778 # Each item on this list is a reference to a list consisting
1779 # of four values followed by additional transform flags for
1780 # file_contents. The four values are the derived flag prefix
1781 # (e.g. for `foo_CFLAGS', it is `foo'), the name of the
1782 # source file, the base name of the output file, and
1783 # the extension for the object file.
1784 push (@{$lang_specific_files{$lang->name}},
1785 [@specifics, %transform]);
1786 }
1787 }
1788 elsif ($extension eq $nonansi_obj)
1789 {
1790 # This is probably the result of a direct suffix rule.
1791 # In this case we just accept the rewrite.
1792 $object = "$base$extension";
1793 $object = "$directory/$object" if $directory ne '';
1794 $linker = '';
1795 }
1796 else
1797 {
1798 # No error message here. Used to have one, but it was
1799 # very unpopular.
1800 # FIXME: we could potentially do more processing here,
1801 # perhaps treating the new extension as though it were a
1802 # new source extension (as above). This would require
1803 # more restructuring than is appropriate right now.
1804 next;
1805 }
1807 err_am "object `$object' created by `$full' and `$object_map{$object}'"
1808 if (defined $object_map{$object}
1809 && $object_map{$object} ne $full);
1811 my $comp_val = (($object =~ /\.lo$/)
1812 ? COMPILE_LIBTOOL : COMPILE_ORDINARY);
1813 (my $comp_obj = $object) =~ s/\.lo$/.\$(OBJEXT)/;
1814 if (defined $object_compilation_map{$comp_obj}
1815 && $object_compilation_map{$comp_obj} != 0
1816 # Only see the error once.
1817 && ($object_compilation_map{$comp_obj}
1818 != (COMPILE_LIBTOOL | COMPILE_ORDINARY))
1819 && $object_compilation_map{$comp_obj} != $comp_val)
1820 {
1821 err_am "object `$comp_obj' created both with libtool and without";
1822 }
1823 $object_compilation_map{$comp_obj} |= $comp_val;
1825 if (defined $lang)
1826 {
1827 # Let the language do some special magic if required.
1828 $lang->target_hook ($aggregate, $object, $full, %transform);
1829 }
1831 if ($derived_source)
1832 {
1833 prog_error ($lang->name . " has automatic dependency tracking")
1834 if $lang->autodep ne 'no';
1835 # Make sure this new source file is handled next. That will
1836 # make it appear to be at the right place in the list.
1837 unshift (@files, $object);
1838 # Distribute derived sources unless the source they are
1839 # derived from is not.
1840 &push_dist_common ($object)
1841 unless ($topparent =~ /^(?:nobase_)?nodist_/);
1842 next;
1843 }
1845 $linkers_used{$linker} = 1;
1847 push (@result, $object);
1849 if (! defined $object_map{$object})
1850 {
1851 my @dep_list = ();
1852 $object_map{$object} = $full;
1854 # If resulting object is in subdir, we need to make
1855 # sure the subdir exists at build time.
1856 if ($object =~ /\//)
1857 {
1858 # FIXME: check that $DIRECTORY is somewhere in the
1859 # project
1861 # For Java, the way we're handling it right now, a
1862 # `..' component doesn't make sense.
1863 if ($lang && $lang->name eq 'java' && $object =~ /(\/|^)\.\.\//)
1864 {
1865 err_am "`$full' should not contain a `..' component";
1866 }
1868 # Make sure object is removed by `make mostlyclean'.
1869 $compile_clean_files{$object} = MOSTLY_CLEAN;
1870 # If we have a libtool object then we also must remove
1871 # the ordinary .o.
1872 if ($object =~ /\.lo$/)
1873 {
1874 (my $xobj = $object) =~ s,lo$,\$(OBJEXT),;
1875 $compile_clean_files{$xobj} = MOSTLY_CLEAN;
1877 # Remove any libtool object in this directory.
1878 $libtool_clean_directories{$directory} = 1;
1879 }
1881 push (@dep_list, require_build_directory ($directory));
1883 # If we're generating dependencies, we also want
1884 # to make sure that the appropriate subdir of the
1885 # .deps directory is created.
1886 push (@dep_list,
1887 require_build_directory ($directory . '/$(DEPDIR)'))
1888 unless option 'no-dependencies';
1889 }
1891 &pretty_print_rule ($object . ':', "\t", @dep_list)
1892 if scalar @dep_list > 0;
1893 }
1895 # Transform .o or $o file into .P file (for automatic
1896 # dependency code).
1897 if ($lang && $lang->autodep ne 'no')
1898 {
1899 my $depfile = $object;
1900 $depfile =~ s/\.([^.]*)$/.P$1/;
1901 $depfile =~ s/\$\(OBJEXT\)$/o/;
1902 $dep_files{dirname ($depfile) . '/$(DEPDIR)/'
1903 . basename ($depfile)} = 1;
1904 }
1905 }
1907 return @result;
1908 }
1911 # $LINKER
1912 # define_objects_from_sources ($VAR, $OBJVAR, $NODEFINE, $ONE_FILE,
1913 # $OBJ, $PARENT, $TOPPARENT, $WHERE, %TRANSFORM)
1914 # ---------------------------------------------------------------------------
1915 # Define an _OBJECTS variable for a _SOURCES variable (or subvariable)
1916 #
1917 # Arguments are:
1918 # $VAR is the name of the _SOURCES variable
1919 # $OBJVAR is the name of the _OBJECTS variable if known (otherwise
1920 # it will be generated and returned).
1921 # $NODEFINE is a boolean: if true, $OBJVAR will not be defined (but
1922 # work done to determine the linker will be).
1923 # $ONE_FILE is the canonical (transformed) name of object to build
1924 # $OBJ is the object extension (i.e. either `.o' or `.lo').
1925 # $TOPPARENT is the _SOURCES variable being processed.
1926 # $WHERE context into which this definition is done
1927 # %TRANSFORM extra arguments to pass to file_contents when producing
1928 # rules
1929 #
1930 # Result is a pair ($LINKER, $OBJVAR):
1931 # $LINKER is a boolean, true if a linker is needed to deal with the objects
1932 sub define_objects_from_sources ($$$$$$$%)
1933 {
1934 my ($var, $objvar, $nodefine, $one_file,
1935 $obj, $topparent, $where, %transform) = @_;
1937 my $needlinker = "";
1939 transform_variable_recursively
1940 ($var, $objvar, 'am__objects', $nodefine, $where,
1941 # The transform code to run on each filename.
1942 sub {
1943 my ($subvar, $val, $cond, $full_cond) = @_;
1944 my @trans = handle_single_transform ($subvar, $topparent,
1945 $one_file, $obj, $val,
1946 %transform);
1947 $needlinker = "true" if @trans;
1948 return @trans;
1949 });
1951 return $needlinker;
1952 }
1955 # handle_source_transform ($CANON_TARGET, $TARGET, $OBJEXT, $WHERE, %TRANSFORM)
1956 # -----------------------------------------------------------------------------
1957 # Handle SOURCE->OBJECT transform for one program or library.
1958 # Arguments are:
1959 # canonical (transformed) name of target to build
1960 # actual target of object to build
1961 # object extension (i.e., either `.o' or `$o')
1962 # location of the source variable
1963 # extra arguments to pass to file_contents when producing rules
1964 # Return the name of the linker variable that must be used.
1965 # Empty return means just use `LINK'.
1966 sub handle_source_transform ($$$$%)
1967 {
1968 # one_file is canonical name. unxformed is given name. obj is
1969 # object extension.
1970 my ($one_file, $unxformed, $obj, $where, %transform) = @_;
1972 my $linker = '';
1974 # No point in continuing if _OBJECTS is defined.
1975 return if reject_var ($one_file . '_OBJECTS',
1976 $one_file . '_OBJECTS should not be defined');
1978 my %used_pfx = ();
1979 my $needlinker;
1980 %linkers_used = ();
1981 foreach my $prefix ('', 'EXTRA_', 'dist_', 'nodist_',
1982 'dist_EXTRA_', 'nodist_EXTRA_')
1983 {
1984 my $varname = $prefix . $one_file . "_SOURCES";
1985 my $var = var $varname;
1986 next unless $var;
1988 # We are going to define _OBJECTS variables using the prefix.
1989 # Then we glom them all together. So we can't use the null
1990 # prefix here as we need it later.
1991 my $xpfx = ($prefix eq '') ? 'am_' : $prefix;
1993 # Keep track of which prefixes we saw.
1994 $used_pfx{$xpfx} = 1
1995 unless $prefix =~ /EXTRA_/;
1997 push @sources, "\$($varname)";
1998 push @dist_sources, shadow_unconditionally ($varname, $where)
1999 unless (option ('no-dist') || $prefix =~ /^nodist_/);
2001 $needlinker |=
2002 define_objects_from_sources ($varname,
2003 $xpfx . $one_file . '_OBJECTS',
2004 $prefix =~ /EXTRA_/,
2005 $one_file, $obj, $varname, $where,
2006 DIST_SOURCE => ($prefix !~ /^nodist_/),
2007 %transform);
2008 }
2009 if ($needlinker)
2010 {
2011 $linker ||= &resolve_linker (%linkers_used);
2012 }
2014 my @keys = sort keys %used_pfx;
2015 if (scalar @keys == 0)
2016 {
2017 # The default source for libfoo.la is libfoo.c, but for
2018 # backward compatibility we first look at libfoo_la.c
2019 my $old_default_source = "$one_file.c";
2020 (my $default_source = $unxformed) =~ s,(\.[^./\\]*)?$,.c,;
2021 if ($old_default_source ne $default_source
2022 && (rule $old_default_source
2023 || rule '$(srcdir)/' . $old_default_source
2024 || rule '${srcdir}/' . $old_default_source
2025 || -f $old_default_source))
2026 {
2027 my $loc = $where->clone;
2028 $loc->pop_context;
2029 msg ('obsolete', $loc,
2030 "the default source for `$unxformed' has been changed "
2031 . "to `$default_source'.\n(Using `$old_default_source' for "
2032 . "backward compatibility.)");
2033 $default_source = $old_default_source;
2034 }
2035 # If a rule exists to build this source with a $(srcdir)
2036 # prefix, use that prefix in our variables too. This is for
2037 # the sake of BSD Make.
2038 if (rule '$(srcdir)/' . $default_source
2039 || rule '${srcdir}/' . $default_source)
2040 {
2041 $default_source = '$(srcdir)/' . $default_source;
2042 }
2044 &define_variable ($one_file . "_SOURCES", $default_source, $where);
2045 push (@sources, $default_source);
2046 push (@dist_sources, $default_source);
2048 %linkers_used = ();
2049 my (@result) =
2050 handle_single_transform ($one_file . '_SOURCES',
2051 $one_file . '_SOURCES',
2052 $one_file, $obj,
2053 $default_source, %transform);
2054 $linker ||= &resolve_linker (%linkers_used);
2055 define_pretty_variable ($one_file . '_OBJECTS', TRUE, $where, @result);
2056 }
2057 else
2058 {
2059 @keys = map { '$(' . $_ . $one_file . '_OBJECTS)' } @keys;
2060 define_pretty_variable ($one_file . '_OBJECTS', TRUE, $where, @keys);
2061 }
2063 # If we want to use `LINK' we must make sure it is defined.
2064 if ($linker eq '')
2065 {
2066 $need_link = 1;
2067 }
2069 return $linker;
2070 }
2073 # handle_lib_objects ($XNAME, $VAR)
2074 # ---------------------------------
2075 # Special-case ALLOCA and LIBOBJS substitutions in _LDADD or _LIBADD variables.
2076 # Also, generate _DEPENDENCIES variable if appropriate.
2077 # Arguments are:
2078 # transformed name of object being built, or empty string if no object
2079 # name of _LDADD/_LIBADD-type variable to examine
2080 # Returns 1 if LIBOBJS seen, 0 otherwise.
2081 sub handle_lib_objects
2082 {
2083 my ($xname, $varname) = @_;
2085 my $var = var ($varname);
2086 prog_error "handle_lib_objects: `$varname' undefined"
2087 unless $var;
2088 prog_error "handle_lib_objects: unexpected variable name `$varname'"
2089 unless $varname =~ /^(.*)(?:LIB|LD)ADD$/;
2090 my $prefix = $1 || 'AM_';
2092 my $seen_libobjs = 0;
2093 my $flagvar = 0;
2095 transform_variable_recursively
2096 ($varname, $xname . '_DEPENDENCIES', 'am__DEPENDENCIES',
2097 ! $xname, INTERNAL,
2098 # Transformation function, run on each filename.
2099 sub {
2100 my ($subvar, $val, $cond, $full_cond) = @_;
2102 if ($val =~ /^-/)
2103 {
2104 # Skip -lfoo and -Ldir silently; these are explicitly allowed.
2105 if ($val !~ /^-[lL]/ &&
2106 # Skip -dlopen and -dlpreopen; these are explicitly allowed
2107 # for Libtool libraries or programs. (Actually we are a bit
2108 # laxest here since this code also applies to non-libtool
2109 # libraries or programs, for which -dlopen and -dlopreopen
2110 # are pure non-sence. Diagnosting this doesn't seems very
2111 # important: the developer will quickly get complaints from
2112 # the linker.)
2113 $val !~ /^-dl(?:pre)?open$/ &&
2114 # Only get this error once.
2115 ! $flagvar)
2116 {
2117 $flagvar = 1;
2118 # FIXME: should display a stack of nested variables
2119 # as context when $var != $subvar.
2120 err_var ($var, "linker flags such as `$val' belong in "
2121 . "`${prefix}LDFLAGS");
2122 }
2123 return ();
2124 }
2125 elsif ($val !~ /^\@.*\@$/)
2126 {
2127 # Assume we have a file of some sort, and output it into the
2128 # dependency variable. Autoconf substitutions are not output;
2129 # rarely is a new dependency substituted into e.g. foo_LDADD
2130 # -- but bad things (e.g. -lX11) are routinely substituted.
2131 # Note that LIBOBJS and ALLOCA are exceptions to this rule,
2132 # and handled specially below.
2133 return $val;
2134 }
2135 elsif ($val =~ /^\@(LT)?LIBOBJS\@$/)
2136 {
2137 handle_LIBOBJS ($subvar, $cond, $1);
2138 $seen_libobjs = 1;
2139 return $val;
2140 }
2141 elsif ($val =~ /^\@(LT)?ALLOCA\@$/)
2142 {
2143 handle_ALLOCA ($subvar, $cond, $1);
2144 return $val;
2145 }
2146 else
2147 {
2148 return ();
2149 }
2150 });
2152 return $seen_libobjs;
2153 }
2155 # handle_LIBOBJS_or_ALLOCA ($VAR)
2156 # -------------------------------
2157 # Definitions common to LIBOBJS and ALLOCA.
2158 # VAR should be one of LIBOBJS, LTLIBOBJS, ALLOCA, or LTALLOCA.
2159 sub handle_LIBOBJS_or_ALLOCA ($)
2160 {
2161 my ($var) = @_;
2163 my $dir = $config_libobj_dir ? "$config_libobj_dir/" : '';
2165 # If LIBOBJS files must be built in another directory we have
2166 # to define LIBOBJDIR and ensure the files get cleaned.
2167 # Otherwise LIBOBJDIR can be left undefined, and the cleaning
2168 # is achieved by `rm -f *.($OBJEXT)' in compile.am.
2169 if ($config_libobj_dir
2170 && $relative_dir ne $config_libobj_dir)
2171 {
2172 if (option 'subdir-objects')
2173 {
2174 define_variable ('LIBOBJDIR', "\$(top_builddir)/$dir", INTERNAL);
2175 $clean_files{"\$($var)"} = MOSTLY_CLEAN;
2176 # If LTLIBOBJS is used, we must also clear LIBOBJS (which might
2177 # be created by libtool as a side-effect of creating LTLIBOBJS).
2178 $clean_files{"\$($var)"} = MOSTLY_CLEAN if $var =~ s/^LT//;
2180 }
2181 else
2182 {
2183 error ("`\$($var)' cannot be used outside `$dir' if"
2184 . " `subdir-objects' is not set");
2185 }
2186 }
2188 return $dir;
2189 }
2191 sub handle_LIBOBJS ($$$)
2192 {
2193 my ($var, $cond, $lt) = @_;
2194 $lt ||= '';
2195 my $myobjext = ($1 ? 'l' : '') . 'o';
2197 $var->requires_variables ("\@${lt}LIBOBJS\@ used", $lt . 'LIBOBJS')
2198 if ! keys %libsources;
2200 my $dir = handle_LIBOBJS_or_ALLOCA "${lt}LIBOBJS";
2202 foreach my $iter (keys %libsources)
2203 {
2204 if ($iter =~ /\.[cly]$/)
2205 {
2206 &saw_extension ($&);
2207 &saw_extension ('.c');
2208 }
2210 if ($iter =~ /\.h$/)
2211 {
2212 require_libsource_with_macro ($cond, $var, FOREIGN, $iter);
2213 }
2214 elsif ($iter ne 'alloca.c')
2215 {
2216 my $rewrite = $iter;
2217 $rewrite =~ s/\.c$/.P$myobjext/;
2218 $dep_files{$dir . '$(DEPDIR)/' . $rewrite} = 1;
2219 $rewrite = "^" . quotemeta ($iter) . "\$";
2220 # Only require the file if it is not a built source.
2221 my $bs = var ('BUILT_SOURCES');
2222 if (! $bs || ! grep (/$rewrite/, $bs->value_as_list_recursive))
2223 {
2224 require_libsource_with_macro ($cond, $var, FOREIGN, $iter);
2225 }
2226 }
2227 }
2228 }
2230 sub handle_ALLOCA ($$$)
2231 {
2232 my ($var, $cond, $lt) = @_;
2233 my $myobjext = ($lt ? 'l' : '') . 'o';
2234 $lt ||= '';
2235 my $dir = handle_LIBOBJS_or_ALLOCA "${lt}ALLOCA";
2237 $var->requires_variables ("\@${lt}ALLOCA\@ used", $lt . 'ALLOCA');
2238 $dep_files{$dir . '$(DEPDIR)/alloca.P' . $myobjext} = 1;
2239 require_libsource_with_macro ($cond, $var, FOREIGN, 'alloca.c');
2240 &saw_extension ('.c');
2241 }
2243 # Canonicalize the input parameter
2244 sub canonicalize
2245 {
2246 my ($string) = @_;
2247 $string =~ tr/A-Za-z0-9_\@/_/c;
2248 return $string;
2249 }
2251 # Canonicalize a name, and check to make sure the non-canonical name
2252 # is never used. Returns canonical name. Arguments are name and a
2253 # list of suffixes to check for.
2254 sub check_canonical_spelling
2255 {
2256 my ($name, @suffixes) = @_;
2258 my $xname = &canonicalize ($name);
2259 if ($xname ne $name)
2260 {
2261 foreach my $xt (@suffixes)
2262 {
2263 reject_var ("$name$xt", "use `$xname$xt', not `$name$xt'");
2264 }
2265 }
2267 return $xname;
2268 }
2271 # handle_compile ()
2272 # -----------------
2273 # Set up the compile suite.
2274 sub handle_compile ()
2275 {
2276 return
2277 unless $get_object_extension_was_run;
2279 # Boilerplate.
2280 my $default_includes = '';
2281 if (! option 'nostdinc')
2282 {
2283 $default_includes = ' -I. -I$(srcdir)';
2285 my $var = var 'CONFIG_HEADER';
2286 if ($var)
2287 {
2288 foreach my $hdr (split (' ', $var->variable_value))
2289 {
2290 $default_includes .= ' -I' . dirname ($hdr);
2291 }
2292 }
2293 }
2295 my (@mostly_rms, @dist_rms);
2296 foreach my $item (sort keys %compile_clean_files)
2297 {
2298 if ($compile_clean_files{$item} == MOSTLY_CLEAN)
2299 {
2300 push (@mostly_rms, "\t-rm -f $item");
2301 }
2302 elsif ($compile_clean_files{$item} == DIST_CLEAN)
2303 {
2304 push (@dist_rms, "\t-rm -f $item");
2305 }
2306 else
2307 {
2308 prog_error 'invalid entry in %compile_clean_files';
2309 }
2310 }
2312 my ($coms, $vars, $rules) =
2313 &file_contents_internal (1, "$libdir/am/compile.am",
2314 new Automake::Location,
2315 ('DEFAULT_INCLUDES' => $default_includes,
2316 'MOSTLYRMS' => join ("\n", @mostly_rms),
2317 'DISTRMS' => join ("\n", @dist_rms)));
2318 $output_vars .= $vars;
2319 $output_rules .= "$coms$rules";
2321 # Check for automatic de-ANSI-fication.
2322 if (option 'ansi2knr')
2323 {
2324 my ($ansi2knr_filename, $ansi2knr_where) = @{option 'ansi2knr'};
2325 my $ansi2knr_dir = '';
2327 require_variables ($ansi2knr_where, "option `ansi2knr' is used",
2328 TRUE, "ANSI2KNR", "U");
2330 # topdir is where ansi2knr should be.
2331 if ($ansi2knr_filename eq 'ansi2knr')
2332 {
2333 # Only require ansi2knr files if they should appear in
2334 # this directory.
2335 require_file ($ansi2knr_where, FOREIGN,
2336 'ansi2knr.c', 'ansi2knr.1');
2338 # ansi2knr needs to be built before subdirs, so unshift it.
2339 unshift (@all, '$(ANSI2KNR)');
2340 }
2341 else
2342 {
2343 $ansi2knr_dir = dirname ($ansi2knr_filename);
2344 }
2346 $output_rules .= &file_contents ('ansi2knr',
2347 new Automake::Location,
2348 'ANSI2KNR-DIR' => $ansi2knr_dir);
2350 }
2351 }
2353 # handle_libtool ()
2354 # -----------------
2355 # Handle libtool rules.
2356 sub handle_libtool
2357 {
2358 return unless var ('LIBTOOL');
2360 # Libtool requires some files, but only at top level.
2361 # (Starting with Libtool 2.0 we do not have to bother. These
2362 # requirements are done with AC_REQUIRE_AUX_FILE.)
2363 require_conf_file_with_macro (TRUE, 'LIBTOOL', FOREIGN, @libtool_files)
2364 if $relative_dir eq '.' && ! $libtool_new_api;
2366 my @libtool_rms;
2367 foreach my $item (sort keys %libtool_clean_directories)
2368 {
2369 my $dir = ($item eq '.') ? '' : "$item/";
2370 # .libs is for Unix, _libs for DOS.
2371 push (@libtool_rms, "\t-rm -rf ${dir}.libs ${dir}_libs");
2372 }
2374 check_user_variables 'LIBTOOLFLAGS';
2376 # Output the libtool compilation rules.
2377 $output_rules .= &file_contents ('libtool',
2378 new Automake::Location,
2379 LTRMS => join ("\n", @libtool_rms));
2380 }
2382 # handle_programs ()
2383 # ------------------
2384 # Handle C programs.
2385 sub handle_programs
2386 {
2387 my @proglist = &am_install_var ('progs', 'PROGRAMS',
2388 'bin', 'sbin', 'libexec', 'pkglib',
2389 'noinst', 'check');
2390 return if ! @proglist;
2392 my $seen_global_libobjs =
2393 var ('LDADD') && &handle_lib_objects ('', 'LDADD');
2395 foreach my $pair (@proglist)
2396 {
2397 my ($where, $one_file) = @$pair;
2399 my $seen_libobjs = 0;
2400 my $obj = get_object_extension '.$(OBJEXT)';
2402 # Strip any $(EXEEXT) suffix the user might have added, or this
2403 # will confuse &handle_source_transform and &check_canonical_spelling.
2404 # We'll add $(EXEEXT) back later anyway.
2405 $one_file =~ s/\$\(EXEEXT\)$//;
2407 $known_programs{$one_file} = $where;
2409 # Canonicalize names and check for misspellings.
2410 my $xname = &check_canonical_spelling ($one_file, '_LDADD', '_LDFLAGS',
2411 '_SOURCES', '_OBJECTS',
2412 '_DEPENDENCIES');
2414 $where->push_context ("while processing program `$one_file'");
2415 $where->set (INTERNAL->get);
2417 my $linker = &handle_source_transform ($xname, $one_file, $obj, $where,
2418 NONLIBTOOL => 1, LIBTOOL => 0);
2420 if (var ($xname . "_LDADD"))
2421 {
2422 $seen_libobjs = &handle_lib_objects ($xname, $xname . '_LDADD');
2423 }
2424 else
2425 {
2426 # User didn't define prog_LDADD override. So do it.
2427 &define_variable ($xname . '_LDADD', '$(LDADD)', $where);
2429 # This does a bit too much work. But we need it to
2430 # generate _DEPENDENCIES when appropriate.
2431 if (var ('LDADD'))
2432 {
2433 $seen_libobjs = &handle_lib_objects ($xname, 'LDADD');
2434 }
2435 }
2437 reject_var ($xname . '_LIBADD',
2438 "use `${xname}_LDADD', not `${xname}_LIBADD'");
2440 set_seen ($xname . '_DEPENDENCIES');
2441 set_seen ($xname . '_LDFLAGS');
2443 # Determine program to use for link.
2444 my $xlink = &define_per_target_linker_variable ($linker, $xname);
2446 # If the resulting program lies into a subdirectory,
2447 # make sure this directory will exist.
2448 my $dirstamp = require_build_directory_maybe ($one_file);
2450 $output_rules .= &file_contents ('program',
2451 $where,
2452 PROGRAM => $one_file,
2453 XPROGRAM => $xname,
2454 XLINK => $xlink,
2455 DIRSTAMP => $dirstamp,
2456 EXEEXT => '$(EXEEXT)');
2458 if ($seen_libobjs || $seen_global_libobjs)
2459 {
2460 if (var ($xname . '_LDADD'))
2461 {
2462 &check_libobjs_sources ($xname, $xname . '_LDADD');
2463 }
2464 elsif (var ('LDADD'))
2465 {
2466 &check_libobjs_sources ($xname, 'LDADD');
2467 }
2468 }
2469 }
2470 }
2473 # handle_libraries ()
2474 # -------------------
2475 # Handle libraries.
2476 sub handle_libraries
2477 {
2478 my @liblist = &am_install_var ('libs', 'LIBRARIES',
2479 'lib', 'pkglib', 'noinst', 'check');
2480 return if ! @liblist;
2482 my @prefix = am_primary_prefixes ('LIBRARIES', 0, 'lib', 'pkglib',
2483 'noinst', 'check');
2485 if (@prefix)
2486 {
2487 my $var = rvar ($prefix[0] . '_LIBRARIES');
2488 $var->requires_variables ('library used', 'RANLIB');
2489 }
2491 &define_variable ('AR', 'ar', INTERNAL);
2492 &define_variable ('ARFLAGS', 'cru', INTERNAL);
2494 foreach my $pair (@liblist)
2495 {
2496 my ($where, $onelib) = @$pair;
2498 my $seen_libobjs = 0;
2499 # Check that the library fits the standard naming convention.
2500 my $bn = basename ($onelib);
2501 if ($bn !~ /^lib.*\.a$/)
2502 {
2503 $bn =~ s/^(?:lib)?(.*?)(?:\.[^.]*)?$/lib$1.a/;
2504 my $suggestion = dirname ($onelib) . "/$bn";
2505 $suggestion =~ s|^\./||g;
2506 msg ('error-gnu/warn', $where,
2507 "`$onelib' is not a standard library name\n"
2508 . "did you mean `$suggestion'?")
2509 }
2511 $where->push_context ("while processing library `$onelib'");
2512 $where->set (INTERNAL->get);
2514 my $obj = get_object_extension '.$(OBJEXT)';
2516 # Canonicalize names and check for misspellings.
2517 my $xlib = &check_canonical_spelling ($onelib, '_LIBADD', '_SOURCES',
2518 '_OBJECTS', '_DEPENDENCIES',
2519 '_AR');
2521 if (! var ($xlib . '_AR'))
2522 {
2523 &define_variable ($xlib . '_AR', '$(AR) $(ARFLAGS)', $where);
2524 }
2526 # Generate support for conditional object inclusion in
2527 # libraries.
2528 if (var ($xlib . '_LIBADD'))
2529 {
2530 if (&handle_lib_objects ($xlib, $xlib . '_LIBADD'))
2531 {
2532 $seen_libobjs = 1;
2533 }
2534 }
2535 else
2536 {
2537 &define_variable ($xlib . "_LIBADD", '', $where);
2538 }
2540 reject_var ($xlib . '_LDADD',
2541 "use `${xlib}_LIBADD', not `${xlib}_LDADD'");
2543 # Make sure we at look at this.
2544 set_seen ($xlib . '_DEPENDENCIES');
2546 &handle_source_transform ($xlib, $onelib, $obj, $where,
2547 NONLIBTOOL => 1, LIBTOOL => 0);
2549 # If the resulting library lies into a subdirectory,
2550 # make sure this directory will exist.
2551 my $dirstamp = require_build_directory_maybe ($onelib);
2553 $output_rules .= &file_contents ('library',
2554 $where,
2555 LIBRARY => $onelib,
2556 XLIBRARY => $xlib,
2557 DIRSTAMP => $dirstamp);
2559 if ($seen_libobjs)
2560 {
2561 if (var ($xlib . '_LIBADD'))
2562 {
2563 &check_libobjs_sources ($xlib, $xlib . '_LIBADD');
2564 }
2565 }
2566 }
2567 }
2570 # handle_ltlibraries ()
2571 # ---------------------
2572 # Handle shared libraries.
2573 sub handle_ltlibraries
2574 {
2575 my @liblist = &am_install_var ('ltlib', 'LTLIBRARIES',
2576 'noinst', 'lib', 'pkglib', 'check');
2577 return if ! @liblist;
2579 my @prefix = am_primary_prefixes ('LTLIBRARIES', 0, 'lib', 'pkglib',
2580 'noinst', 'check');
2582 if (@prefix)
2583 {
2584 my $var = rvar ($prefix[0] . '_LTLIBRARIES');
2585 $var->requires_variables ('Libtool library used', 'LIBTOOL');
2586 }
2588 my %instdirs = ();
2589 my %instconds = ();
2590 my %liblocations = (); # Location (in Makefile.am) of each library.
2592 foreach my $key (@prefix)
2593 {
2594 # Get the installation directory of each library.
2595 (my $dir = $key) =~ s/^nobase_//;
2596 my $var = rvar ($key . '_LTLIBRARIES');
2598 # We reject libraries which are installed in several places
2599 # in the same condition, because we can only specify one
2600 # `-rpath' option.
2601 $var->traverse_recursively
2602 (sub
2603 {
2604 my ($var, $val, $cond, $full_cond) = @_;
2605 my $hcond = $full_cond->human;
2606 my $where = $var->rdef ($cond)->location;
2607 # A library cannot be installed in different directory
2608 # in overlapping conditions.
2609 if (exists $instconds{$val})
2610 {
2611 my ($msg, $acond) =
2612 $instconds{$val}->ambiguous_p ($val, $full_cond);
2614 if ($msg)
2615 {
2616 error ($where, $msg, partial => 1);
2618 my $dirtxt = "installed in `$dir'";
2619 $dirtxt = "built for `$dir'"
2620 if $dir eq 'EXTRA' || $dir eq 'noinst' || $dir eq 'check';
2621 my $dircond =
2622 $full_cond->true ? "" : " in condition $hcond";
2624 error ($where, "`$val' should be $dirtxt$dircond ...",
2625 partial => 1);
2627 my $hacond = $acond->human;
2628 my $adir = $instdirs{$val}{$acond};
2629 my $adirtxt = "installed in `$adir'";
2630 $adirtxt = "built for `$adir'"
2631 if ($adir eq 'EXTRA' || $adir eq 'noinst'
2632 || $adir eq 'check');
2633 my $adircond = $acond->true ? "" : " in condition $hacond";
2635 my $onlyone = ($dir ne $adir) ?
2636 ("\nLibtool libraries can be built for only one "
2637 . "destination.") : "";
2639 error ($liblocations{$val}{$acond},
2640 "... and should also be $adirtxt$adircond.$onlyone");
2641 return;
2642 }
2643 }
2644 else
2645 {
2646 $instconds{$val} = new Automake::DisjConditions;
2647 }
2648 $instdirs{$val}{$full_cond} = $dir;
2649 $liblocations{$val}{$full_cond} = $where;
2650 $instconds{$val} = $instconds{$val}->merge ($full_cond);
2651 },
2652 sub
2653 {
2654 return ();
2655 },
2656 skip_ac_subst => 1);
2657 }
2659 foreach my $pair (@liblist)
2660 {
2661 my ($where, $onelib) = @$pair;
2663 my $seen_libobjs = 0;
2664 my $obj = get_object_extension '.lo';
2666 # Canonicalize names and check for misspellings.
2667 my $xlib = &check_canonical_spelling ($onelib, '_LIBADD', '_LDFLAGS',
2668 '_SOURCES', '_OBJECTS',
2669 '_DEPENDENCIES');
2671 # Check that the library fits the standard naming convention.
2672 my $libname_rx = '^lib.*\.la';
2673 my $ldvar = var ("${xlib}_LDFLAGS") || var ('AM_LDFLAGS');
2674 my $ldvar2 = var ('LDFLAGS');
2675 if (($ldvar && grep (/-module/, $ldvar->value_as_list_recursive))
2676 || ($ldvar2 && grep (/-module/, $ldvar2->value_as_list_recursive)))
2677 {
2678 # Relax name checking for libtool modules.
2679 $libname_rx = '\.la';
2680 }
2682 my $bn = basename ($onelib);
2683 if ($bn !~ /$libname_rx$/)
2684 {
2685 my $type = 'library';
2686 if ($libname_rx eq '\.la')
2687 {
2688 $bn =~ s/^(lib|)(.*?)(?:\.[^.]*)?$/$1$2.la/;
2689 $type = 'module';
2690 }
2691 else
2692 {
2693 $bn =~ s/^(?:lib)?(.*?)(?:\.[^.]*)?$/lib$1.la/;
2694 }
2695 my $suggestion = dirname ($onelib) . "/$bn";
2696 $suggestion =~ s|^\./||g;
2697 msg ('error-gnu/warn', $where,
2698 "`$onelib' is not a standard libtool $type name\n"
2699 . "did you mean `$suggestion'?")
2700 }
2702 $where->push_context ("while processing Libtool library `$onelib'");
2703 $where->set (INTERNAL->get);
2705 # Make sure we look at these.
2706 set_seen ($xlib . '_LDFLAGS');
2707 set_seen ($xlib . '_DEPENDENCIES');
2709 # Generate support for conditional object inclusion in
2710 # libraries.
2711 if (var ($xlib . '_LIBADD'))
2712 {
2713 if (&handle_lib_objects ($xlib, $xlib . '_LIBADD'))
2714 {
2715 $seen_libobjs = 1;
2716 }
2717 }
2718 else
2719 {
2720 &define_variable ($xlib . "_LIBADD", '', $where);
2721 }
2723 reject_var ("${xlib}_LDADD",
2724 "use `${xlib}_LIBADD', not `${xlib}_LDADD'");
2727 my $linker = &handle_source_transform ($xlib, $onelib, $obj, $where,
2728 NONLIBTOOL => 0, LIBTOOL => 1);
2730 # Determine program to use for link.
2731 my $xlink = &define_per_target_linker_variable ($linker, $xlib);
2733 my $rpathvar = "am_${xlib}_rpath";
2734 my $rpath = "\$($rpathvar)";
2735 foreach my $rcond ($instconds{$onelib}->conds)
2736 {
2737 my $val;
2738 if ($instdirs{$onelib}{$rcond} eq 'EXTRA'
2739 || $instdirs{$onelib}{$rcond} eq 'noinst'
2740 || $instdirs{$onelib}{$rcond} eq 'check')
2741 {
2742 # It's an EXTRA_ library, so we can't specify -rpath,
2743 # because we don't know where the library will end up.
2744 # The user probably knows, but generally speaking automake
2745 # doesn't -- and in fact configure could decide
2746 # dynamically between two different locations.
2747 $val = '';
2748 }
2749 else
2750 {
2751 $val = ('-rpath $(' . $instdirs{$onelib}{$rcond} . 'dir)');
2752 }
2753 if ($rcond->true)
2754 {
2755 # If $rcond is true there is only one condition and
2756 # there is no point defining an helper variable.
2757 $rpath = $val;
2758 }
2759 else
2760 {
2761 define_pretty_variable ($rpathvar, $rcond, INTERNAL, $val);
2762 }
2763 }
2765 # If the resulting library lies into a subdirectory,
2766 # make sure this directory will exist.
2767 my $dirstamp = require_build_directory_maybe ($onelib);
2769 # Remember to cleanup .libs/ in this directory.
2770 my $dirname = dirname $onelib;
2771 $libtool_clean_directories{$dirname} = 1;
2773 $output_rules .= &file_contents ('ltlibrary',
2774 $where,
2775 LTLIBRARY => $onelib,
2776 XLTLIBRARY => $xlib,
2777 RPATH => $rpath,
2778 XLINK => $xlink,
2779 DIRSTAMP => $dirstamp);
2780 if ($seen_libobjs)
2781 {
2782 if (var ($xlib . '_LIBADD'))
2783 {
2784 &check_libobjs_sources ($xlib, $xlib . '_LIBADD');
2785 }
2786 }
2787 }
2788 }
2790 # See if any _SOURCES variable were misspelled.
2791 sub check_typos ()
2792 {
2793 # It is ok if the user sets this particular variable.
2794 set_seen 'AM_LDFLAGS';
2796 foreach my $primary ('SOURCES', 'LIBADD', 'LDADD', 'LDFLAGS', 'DEPENDENCIES')
2797 {
2798 foreach my $var (variables $primary)
2799 {
2800 my $varname = $var->name;
2801 # A configure variable is always legitimate.
2802 next if exists $configure_vars{$varname};
2804 for my $cond ($var->conditions->conds)
2805 {
2806 $varname =~ /^(?:nobase_)?(?:dist_|nodist_)?(.*)_[[:alnum:]]+$/;
2807 msg_var ('syntax', $var, "variable `$varname' is defined but no"
2808 . " program or\nlibrary has `$1' as canonic name"
2809 . " (possible typo)")
2810 unless $var->rdef ($cond)->seen;
2811 }
2812 }
2813 }
2814 }
2817 # Handle scripts.
2818 sub handle_scripts
2819 {
2820 # NOTE we no longer automatically clean SCRIPTS, because it is
2821 # useful to sometimes distribute scripts verbatim. This happens
2822 # e.g. in Automake itself.
2823 &am_install_var ('-candist', 'scripts', 'SCRIPTS',
2824 'bin', 'sbin', 'libexec', 'pkgdata',
2825 'noinst', 'check');
2826 }
2831 ## ------------------------ ##
2832 ## Handling Texinfo files. ##
2833 ## ------------------------ ##
2835 # ($OUTFILE, $VFILE, @CLEAN_FILES)
2836 # &scan_texinfo_file ($FILENAME)
2837 # ------------------------------
2838 # $OUTFILE - name of the info file produced by $FILENAME.
2839 # $VFILE - name of the version.texi file used (undef if none).
2840 # @CLEAN_FILES - list of byproducts (indexes etc.)
2841 sub scan_texinfo_file ($)
2842 {
2843 my ($filename) = @_;
2845 # Some of the following extensions are always created, no matter
2846 # whether indexes are used or not. Other (like cps, fns, ... pgs)
2847 # are only created when they are used. We used to scan $FILENAME
2848 # for their use, but that is not enough: they could be used in
2849 # included files. We can't scan included files because we don't
2850 # know the include path. Therefore we always erase these files, no
2851 # matter whether they are used or not.
2852 #
2853 # (tmp is only created if an @macro is used and a certain e-TeX
2854 # feature is not available.)
2855 my %clean_suffixes =
2856 map { $_ => 1 } (qw(aux log toc tmp
2857 cp cps
2858 fn fns
2859 ky kys
2860 vr vrs
2861 tp tps
2862 pg pgs)); # grep 'new.*index' texinfo.tex
2864 my $texi = new Automake::XFile "< $filename";
2865 verb "reading $filename";
2867 my ($outfile, $vfile);
2868 while ($_ = $texi->getline)
2869 {
2870 if (/^\@setfilename +(\S+)/)
2871 {
2872 # Honor only the first @setfilename. (It's possible to have
2873 # more occurrences later if the manual shows examples of how
2874 # to use @setfilename...)
2875 next if $outfile;
2877 $outfile = $1;
2878 if ($outfile =~ /\.(.+)$/ && $1 ne 'info')
2879 {
2880 error ("$filename:$.",
2881 "output `$outfile' has unrecognized extension");
2882 return;
2883 }
2884 }
2885 # A "version.texi" file is actually any file whose name matches
2886 # "vers*.texi".
2887 elsif (/^\@include\s+(vers[^.]*\.texi)\s*$/)
2888 {
2889 $vfile = $1;
2890 }
2892 # Try to find new or unused indexes.
2894 # Creating a new category of index.
2895 elsif (/^\@def(code)?index (\w+)/)
2896 {
2897 $clean_suffixes{$2} = 1;
2898 $clean_suffixes{"$2s"} = 1;
2899 }
2901 # Merging an index into an another.
2902 elsif (/^\@syn(code)?index (\w+) (\w+)/)
2903 {
2904 delete $clean_suffixes{"$2s"};
2905 $clean_suffixes{"$3s"} = 1;
2906 }
2908 }
2910 if (! $outfile)
2911 {
2912 err_am "`$filename' missing \@setfilename";
2913 return;
2914 }
2916 my $infobase = basename ($filename);
2917 $infobase =~ s/\.te?xi(nfo)?$//;
2918 return ($outfile, $vfile,
2919 map { "$infobase.$_" } (sort keys %clean_suffixes));
2920 }
2923 # ($DIRSTAMP, @CLEAN_FILES)
2924 # output_texinfo_build_rules ($SOURCE, $DEST, $INSRC, @DEPENDENCIES)
2925 # ------------------------------------------------------------------
2926 # SOURCE - the source Texinfo file
2927 # DEST - the destination Info file
2928 # INSRC - wether DEST should be built in the source tree
2929 # DEPENDENCIES - known dependencies
2930 sub output_texinfo_build_rules ($$$@)
2931 {
2932 my ($source, $dest, $insrc, @deps) = @_;
2934 # Split `a.texi' into `a' and `.texi'.
2935 my ($spfx, $ssfx) = ($source =~ /^(.*?)(\.[^.]*)?$/);
2936 my ($dpfx, $dsfx) = ($dest =~ /^(.*?)(\.[^.]*)?$/);
2938 $ssfx ||= "";
2939 $dsfx ||= "";
2941 # We can output two kinds of rules: the "generic" rules use Make
2942 # suffix rules and are appropriate when $source and $dest do not lie
2943 # in a sub-directory; the "specific" rules are needed in the other
2944 # case.
2945 #
2946 # The former are output only once (this is not really apparent here,
2947 # but just remember that some logic deeper in Automake will not
2948 # output the same rule twice); while the later need to be output for
2949 # each Texinfo source.
2950 my $generic;
2951 my $makeinfoflags;
2952 my $sdir = dirname $source;
2953 if ($sdir eq '.' && dirname ($dest) eq '.')
2954 {
2955 $generic = 1;
2956 $makeinfoflags = '-I $(srcdir)';
2957 }
2958 else
2959 {
2960 $generic = 0;
2961 $makeinfoflags = "-I $sdir -I \$(srcdir)/$sdir";
2962 }
2964 # A directory can contain two kinds of info files: some built in the
2965 # source tree, and some built in the build tree. The rules are
2966 # different in each case. However we cannot output two different
2967 # set of generic rules. Because in-source builds are more usual, we
2968 # use generic rules in this case and fall back to "specific" rules
2969 # for build-dir builds. (It should not be a problem to invert this
2970 # if needed.)
2971 $generic = 0 unless $insrc;
2973 # We cannot use a suffix rule to build info files with an empty
2974 # extension. Otherwise we would output a single suffix inference
2975 # rule, with separate dependencies, as in
2976 #
2977 # .texi:
2978 # $(MAKEINFO) ...
2979 # foo.info: foo.texi
2980 #
2981 # which confuse Solaris make. (See the Autoconf manual for
2982 # details.) Therefore we use a specific rule in this case. This
2983 # applies to info files only (dvi and pdf files always have an
2984 # extension).
2985 my $generic_info = ($generic && $dsfx) ? 1 : 0;
2987 # If the resulting file lie into a subdirectory,
2988 # make sure this directory will exist.
2989 my $dirstamp = require_build_directory_maybe ($dest);
2991 my $dipfx = ($insrc ? '$(srcdir)/' : '') . $dpfx;
2993 $output_rules .= file_contents ('texibuild',
2994 new Automake::Location,
2995 DEPS => "@deps",
2996 DEST_PREFIX => $dpfx,
2997 DEST_INFO_PREFIX => $dipfx,
2998 DEST_SUFFIX => $dsfx,
2999 DIRSTAMP => $dirstamp,
3000 GENERIC => $generic,
3001 GENERIC_INFO => $generic_info,
3002 INSRC => $insrc,
3003 MAKEINFOFLAGS => $makeinfoflags,
3004 SOURCE => ($generic
3005 ? '$<' : $source),
3006 SOURCE_INFO => ($generic_info
3007 ? '$<' : $source),
3008 SOURCE_REAL => $source,
3009 SOURCE_SUFFIX => $ssfx,
3010 );
3011 return ($dirstamp, "$dpfx.dvi", "$dpfx.pdf", "$dpfx.ps", "$dpfx.html");
3012 }
3015 # $TEXICLEANS
3016 # handle_texinfo_helper ($info_texinfos)
3017 # --------------------------------------
3018 # Handle all Texinfo source; helper for handle_texinfo.
3019 sub handle_texinfo_helper ($)
3020 {
3021 my ($info_texinfos) = @_;
3022 my (@infobase, @info_deps_list, @texi_deps);
3023 my %versions;
3024 my $done = 0;
3025 my @texi_cleans;
3027 # Build a regex matching user-cleaned files.
3028 my $d = var 'DISTCLEANFILES';
3029 my $c = var 'CLEANFILES';
3030 my @f = ();
3031 push @f, $d->value_as_list_recursive (inner_expand => 1) if $d;
3032 push @f, $c->value_as_list_recursive (inner_expand => 1) if $c;
3033 @f = map { s|[^A-Za-z_0-9*\[\]\-]|\\$&|g; s|\*|[^/]*|g; $_; } @f;
3034 my $user_cleaned_files = '^(?:' . join ('|', @f) . ')$';
3036 foreach my $texi
3037 ($info_texinfos->value_as_list_recursive (inner_expand => 1))
3038 {
3039 my $infobase = $texi;
3040 $infobase =~ s/\.(txi|texinfo|texi)$//;
3042 if ($infobase eq $texi)
3043 {
3044 # FIXME: report line number.
3045 err_am "texinfo file `$texi' has unrecognized extension";
3046 next;
3047 }
3049 push @infobase, $infobase;
3051 # If 'version.texi' is referenced by input file, then include
3052 # automatic versioning capability.
3053 my ($out_file, $vtexi, @clean_files) =
3054 scan_texinfo_file ("$relative_dir/$texi")
3055 or next;
3056 push (@texi_cleans, @clean_files);
3058 # If the Texinfo source is in a subdirectory, create the
3059 # resulting info in this subdirectory. If it is in the current
3060 # directory, try hard to not prefix "./" because it breaks the
3061 # generic rules.
3062 my $outdir = dirname ($texi) . '/';
3063 $outdir = "" if $outdir eq './';
3064 $out_file = $outdir . $out_file;
3066 # Until Automake 1.6.3, .info files were built in the
3067 # source tree. This was an obstacle to the support of
3068 # non-distributed .info files, and non-distributed .texi
3069 # files.
3070 #
3071 # * Non-distributed .texi files is important in some packages
3072 # where .texi files are built at make time, probably using
3073 # other binaries built in the package itself, maybe using
3074 # tools or information found on the build host. Because
3075 # these files are not distributed they are always rebuilt
3076 # at make time; they should therefore not lie in the source
3077 # directory. One plan was to support this using
3078 # nodist_info_TEXINFOS or something similar. (Doing this
3079 # requires some sanity checks. For instance Automake should
3080 # not allow:
3081 # dist_info_TEXINFO = foo.texi
3082 # nodist_foo_TEXINFO = included.texi
3083 # because a distributed file should never depend on a
3084 # non-distributed file.)
3085 #
3086 # * If .texi files are not distributed, then .info files should
3087 # not be distributed either. There are also cases where one
3088 # want to distribute .texi files, but do not want to
3089 # distribute the .info files. For instance the Texinfo package
3090 # distributes the tool used to build these files; it would
3091 # be a waste of space to distribute them. It's not clear
3092 # which syntax we should use to indicate that .info files should
3093 # not be distributed. Akim Demaille suggested that eventually
3094 # we switch to a new syntax:
3095 # | Maybe we should take some inspiration from what's already
3096 # | done in the rest of Automake. Maybe there is too much
3097 # | syntactic sugar here, and you want
3098 # | nodist_INFO = bar.info
3099 # | dist_bar_info_SOURCES = bar.texi
3100 # | bar_texi_DEPENDENCIES = foo.texi
3101 # | with a bit of magic to have bar.info represent the whole
3102 # | bar*info set. That's a lot more verbose that the current
3103 # | situation, but it is # not new, hence the user has less
3104 # | to learn.
3105 # |
3106 # | But there is still too much room for meaningless specs:
3107 # | nodist_INFO = bar.info
3108 # | dist_bar_info_SOURCES = bar.texi
3109 # | dist_PS = bar.ps something-written-by-hand.ps
3110 # | nodist_bar_ps_SOURCES = bar.texi
3111 # | bar_texi_DEPENDENCIES = foo.texi
3112 # | here bar.texi is dist_ in line 2, and nodist_ in 4.
3113 #
3114 # Back to the point, it should be clear that in order to support
3115 # non-distributed .info files, we need to build them in the
3116 # build tree, not in the source tree (non-distributed .texi
3117 # files are less of a problem, because we do not output build
3118 # rules for them). In Automake 1.7 .info build rules have been
3119 # largely cleaned up so that .info files get always build in the
3120 # build tree, even when distributed. The idea was that
3121 # (1) if during a VPATH build the .info file was found to be
3122 # absent or out-of-date (in the source tree or in the
3123 # build tree), Make would rebuild it in the build tree.
3124 # If an up-to-date source-tree of the .info file existed,
3125 # make would not rebuild it in the build tree.
3126 # (2) having two copies of .info files, one in the source tree
3127 # and one (newer) in the build tree is not a problem
3128 # because `make dist' always pick files in the build tree
3129 # first.
3130 # However it turned out the be a bad idea for several reasons:
3131 # * Tru64, OpenBSD, and FreeBSD (not NetBSD) Make do not behave
3132 # like GNU Make on point (1) above. These implementations
3133 # of Make would always rebuild .info files in the build
3134 # tree, even if such files were up to date in the source
3135 # tree. Consequently, it was impossible to perform a VPATH
3136 # build of a package containing Texinfo files using these
3137 # Make implementations.
3138 # (Refer to the Autoconf Manual, section "Limitation of
3139 # Make", paragraph "VPATH", item "target lookup", for
3140 # an account of the differences between these
3141 # implementations.)
3142 # * The GNU Coding Standards require these files to be built
3143 # in the source-tree (when they are distributed, that is).
3144 # * Keeping a fresher copy of distributed files in the
3145 # build tree can be annoying during development because
3146 # - if the files is kept under CVS, you really want it
3147 # to be updated in the source tree
3148 # - it is confusing that `make distclean' does not erase
3149 # all files in the build tree.
3150 #
3151 # Consequently, starting with Automake 1.8, .info files are
3152 # built in the source tree again. Because we still plan to
3153 # support non-distributed .info files at some point, we
3154 # have a single variable ($INSRC) that controls whether
3155 # the current .info file must be built in the source tree
3156 # or in the build tree. Actually this variable is switched
3157 # off for .info files that appear to be cleaned; this is
3158 # for backward compatibility with package such as Texinfo,
3159 # which do things like
3160 # info_TEXINFOS = texinfo.txi info-stnd.texi info.texi
3161 # DISTCLEANFILES = texinfo texinfo-* info*.info*
3162 # # Do not create info files for distribution.
3163 # dist-info:
3164 # in order not to distribute .info files.
3165 my $insrc = ($out_file =~ $user_cleaned_files) ? 0 : 1;
3167 my $soutdir = '$(srcdir)/' . $outdir;
3168 $outdir = $soutdir if $insrc;
3170 # If user specified file_TEXINFOS, then use that as explicit
3171 # dependency list.
3172 @texi_deps = ();
3173 push (@texi_deps, "$soutdir$vtexi") if $vtexi;
3175 my $canonical = canonicalize ($infobase);
3176 if (var ($canonical . "_TEXINFOS"))
3177 {
3178 push (@texi_deps, '$(' . $canonical . '_TEXINFOS)');
3179 push_dist_common ('$(' . $canonical . '_TEXINFOS)');
3180 }
3182 my ($dirstamp, @cfiles) =
3183 output_texinfo_build_rules ($texi, $out_file, $insrc, @texi_deps);
3184 push (@texi_cleans, @cfiles);
3186 push (@info_deps_list, $out_file);
3188 # If a vers*.texi file is needed, emit the rule.
3189 if ($vtexi)
3190 {
3191 err_am ("`$vtexi', included in `$texi', "
3192 . "also included in `$versions{$vtexi}'")
3193 if defined $versions{$vtexi};
3194 $versions{$vtexi} = $texi;
3196 # We number the stamp-vti files. This is doable since the
3197 # actual names don't matter much. We only number starting
3198 # with the second one, so that the common case looks nice.
3199 my $vti = ($done ? $done : 'vti');
3200 ++$done;
3202 # This is ugly, but it is our historical practice.
3203 if ($config_aux_dir_set_in_configure_ac)
3204 {
3205 require_conf_file_with_macro (TRUE, 'info_TEXINFOS', FOREIGN,
3206 'mdate-sh');
3207 }
3208 else
3209 {
3210 require_file_with_macro (TRUE, 'info_TEXINFOS',
3211 FOREIGN, 'mdate-sh');
3212 }
3214 my $conf_dir;
3215 if ($config_aux_dir_set_in_configure_ac)
3216 {
3217 $conf_dir = "$am_config_aux_dir/";
3218 }
3219 else
3220 {
3221 $conf_dir = '$(srcdir)/';
3222 }
3223 $output_rules .= file_contents ('texi-vers',
3224 new Automake::Location,
3225 TEXI => $texi,
3226 VTI => $vti,
3227 STAMPVTI => "${soutdir}stamp-$vti",
3228 VTEXI => "$soutdir$vtexi",
3229 MDDIR => $conf_dir,
3230 DIRSTAMP => $dirstamp);
3231 }
3232 }
3234 # Handle location of texinfo.tex.
3235 my $need_texi_file = 0;
3236 my $texinfodir;
3237 if (var ('TEXINFO_TEX'))
3238 {
3239 # The user defined TEXINFO_TEX so assume he knows what he is
3240 # doing.
3241 $texinfodir = ('$(srcdir)/'
3242 . dirname (variable_value ('TEXINFO_TEX')));
3243 }
3244 elsif (option 'cygnus')
3245 {
3246 $texinfodir = '$(top_srcdir)/../texinfo';
3247 define_variable ('TEXINFO_TEX', "$texinfodir/texinfo.tex", INTERNAL);
3248 }
3249 elsif ($config_aux_dir_set_in_configure_ac)
3250 {
3251 $texinfodir = $am_config_aux_dir;
3252 define_variable ('TEXINFO_TEX', "$texinfodir/texinfo.tex", INTERNAL);
3253 $need_texi_file = 2; # so that we require_conf_file later
3254 }
3255 else
3256 {
3257 $texinfodir = '$(srcdir)';
3258 $need_texi_file = 1;
3259 }
3260 define_variable ('am__TEXINFO_TEX_DIR', $texinfodir, INTERNAL);
3262 push (@dist_targets, 'dist-info');
3264 if (! option 'no-installinfo')
3265 {
3266 # Make sure documentation is made and installed first. Use
3267 # $(INFO_DEPS), not 'info', because otherwise recursive makes
3268 # get run twice during "make all".
3269 unshift (@all, '$(INFO_DEPS)');
3270 }
3272 define_files_variable ("DVIS", @infobase, 'dvi', INTERNAL);
3273 define_files_variable ("PDFS", @infobase, 'pdf', INTERNAL);
3274 define_files_variable ("PSS", @infobase, 'ps', INTERNAL);
3275 define_files_variable ("HTMLS", @infobase, 'html', INTERNAL);
3277 # This next isn't strictly needed now -- the places that look here
3278 # could easily be changed to look in info_TEXINFOS. But this is
3279 # probably better, in case noinst_TEXINFOS is ever supported.
3280 define_variable ("TEXINFOS", variable_value ('info_TEXINFOS'), INTERNAL);
3282 # Do some error checking. Note that this file is not required
3283 # when in Cygnus mode; instead we defined TEXINFO_TEX explicitly
3284 # up above.
3285 if ($need_texi_file && ! option 'no-texinfo.tex')
3286 {
3287 if ($need_texi_file > 1)
3288 {
3289 require_conf_file_with_macro (TRUE, 'info_TEXINFOS', FOREIGN,
3290 'texinfo.tex');
3291 }
3292 else
3293 {
3294 require_file_with_macro (TRUE, 'info_TEXINFOS', FOREIGN,
3295 'texinfo.tex');
3296 }
3297 }
3299 return makefile_wrap ("", "\t ", @texi_cleans);
3300 }
3303 # handle_texinfo ()
3304 # -----------------
3305 # Handle all Texinfo source.
3306 sub handle_texinfo ()
3307 {
3308 reject_var 'TEXINFOS', "`TEXINFOS' is an anachronism; use `info_TEXINFOS'";
3309 # FIXME: I think this is an obsolete future feature name.
3310 reject_var 'html_TEXINFOS', "HTML generation not yet supported";
3312 my $info_texinfos = var ('info_TEXINFOS');
3313 my $texiclean = "";
3314 if ($info_texinfos)
3315 {
3316 $texiclean = handle_texinfo_helper ($info_texinfos);
3317 }
3318 $output_rules .= file_contents ('texinfos',
3319 new Automake::Location,
3320 TEXICLEAN => $texiclean,
3321 'LOCAL-TEXIS' => !!$info_texinfos);
3322 }
3325 # Handle any man pages.
3326 sub handle_man_pages
3327 {
3328 reject_var 'MANS', "`MANS' is an anachronism; use `man_MANS'";
3330 # Find all the sections in use. We do this by first looking for
3331 # "standard" sections, and then looking for any additional
3332 # sections used in man_MANS.
3333 my (%sections, %vlist);
3334 # We handle nodist_ for uniformity. man pages aren't distributed
3335 # by default so it isn't actually very important.
3336 foreach my $pfx ('', 'dist_', 'nodist_')
3337 {
3338 # Add more sections as needed.
3339 foreach my $section ('0'..'9', 'n', 'l')
3340 {
3341 my $varname = $pfx . 'man' . $section . '_MANS';
3342 if (var ($varname))
3343 {
3344 $sections{$section} = 1;
3345 $varname = '$(' . $varname . ')';
3346 $vlist{$varname} = 1;
3348 &push_dist_common ($varname)
3349 if $pfx eq 'dist_';
3350 }
3351 }
3353 my $varname = $pfx . 'man_MANS';
3354 my $var = var ($varname);
3355 if ($var)
3356 {
3357 foreach ($var->value_as_list_recursive)
3358 {
3359 # A page like `foo.1c' goes into man1dir.
3360 if (/\.([0-9a-z])([a-z]*)$/)
3361 {
3362 $sections{$1} = 1;
3363 }
3364 }
3366 $varname = '$(' . $varname . ')';
3367 $vlist{$varname} = 1;
3368 &push_dist_common ($varname)
3369 if $pfx eq 'dist_';
3370 }
3371 }
3373 return unless %sections;
3375 # Now for each section, generate an install and uninstall rule.
3376 # Sort sections so output is deterministic.
3377 foreach my $section (sort keys %sections)
3378 {
3379 $output_rules .= &file_contents ('mans',
3380 new Automake::Location,
3381 SECTION => $section);
3382 }
3384 my @mans = sort keys %vlist;
3385 $output_vars .= file_contents ('mans-vars',
3386 new Automake::Location,
3387 MANS => "@mans");
3389 push (@all, '$(MANS)')
3390 unless option 'no-installman';
3391 }
3393 # Handle DATA variables.
3394 sub handle_data
3395 {
3396 &am_install_var ('-noextra', '-candist', 'data', 'DATA',
3397 'data', 'dataroot', 'dvi', 'html', 'pdf', 'ps',
3398 'sysconf', 'sharedstate', 'localstate',
3399 'pkgdata', 'lisp', 'noinst', 'check');
3400 }
3402 # Handle TAGS.
3403 sub handle_tags
3404 {
3405 my @tag_deps = ();
3406 my @ctag_deps = ();
3407 if (var ('SUBDIRS'))
3408 {
3409 $output_rules .= ("tags-recursive:\n"
3410 . "\tlist=\'\$(SUBDIRS)\'; for subdir in \$\$list; do \\\n"
3411 # Never fail here if a subdir fails; it
3412 # isn't important.
3413 . "\t test \"\$\$subdir\" = . || (cd \$\$subdir"
3414 . " && \$(MAKE) \$(AM_MAKEFLAGS) tags); \\\n"
3415 . "\tdone\n");
3416 push (@tag_deps, 'tags-recursive');
3417 &depend ('.PHONY', 'tags-recursive');
3419 $output_rules .= ("ctags-recursive:\n"
3420 . "\tlist=\'\$(SUBDIRS)\'; for subdir in \$\$list; do \\\n"
3421 # Never fail here if a subdir fails; it
3422 # isn't important.
3423 . "\t test \"\$\$subdir\" = . || (cd \$\$subdir"
3424 . " && \$(MAKE) \$(AM_MAKEFLAGS) ctags); \\\n"
3425 . "\tdone\n");
3426 push (@ctag_deps, 'ctags-recursive');
3427 &depend ('.PHONY', 'ctags-recursive');
3428 }
3430 if (&saw_sources_p (1)
3431 || var ('ETAGS_ARGS')
3432 || @tag_deps)
3433 {
3434 my @config;
3435 foreach my $spec (@config_headers)
3436 {
3437 my ($out, @ins) = split_config_file_spec ($spec);
3438 foreach my $in (@ins)
3439 {
3440 # If the config header source is in this directory,
3441 # require it.
3442 push @config, basename ($in)
3443 if $relative_dir eq dirname ($in);
3444 }
3445 }
3446 $output_rules .= &file_contents ('tags',
3447 new Automake::Location,
3448 CONFIG => "@config",
3449 TAGSDIRS => "@tag_deps",
3450 CTAGSDIRS => "@ctag_deps");
3452 set_seen 'TAGS_DEPENDENCIES';
3453 }
3454 elsif (reject_var ('TAGS_DEPENDENCIES',
3455 "doesn't make sense to define `TAGS_DEPENDENCIES'"
3456 . "without\nsources or `ETAGS_ARGS'"))
3457 {
3458 }
3459 else
3460 {
3461 # Every Makefile must define some sort of TAGS rule.
3462 # Otherwise, it would be possible for a top-level "make TAGS"
3463 # to fail because some subdirectory failed.
3464 $output_rules .= "tags: TAGS\nTAGS:\n\n";
3465 # Ditto ctags.
3466 $output_rules .= "ctags: CTAGS\nCTAGS:\n\n";
3467 }
3468 }
3470 # Handle multilib support.
3471 sub handle_multilib
3472 {
3473 if ($seen_multilib && $relative_dir eq '.')
3474 {
3475 $output_rules .= &file_contents ('multilib', new Automake::Location);
3476 push (@all, 'all-multi');
3477 }
3478 }
3481 # user_phony_rule ($NAME)
3482 # -----------------------
3483 # Return false if rule $NAME does not exist. Otherwise,
3484 # declare it as phony, complete its definition (in case it is
3485 # conditional), and return its Automake::Rule instance.
3486 sub user_phony_rule ($)
3487 {
3488 my ($name) = @_;
3489 my $rule = rule $name;
3490 if ($rule)
3491 {
3492 depend ('.PHONY', $name);
3493 # Define $NAME in all condition where it is not already defined,
3494 # so that it is always OK to depend on $NAME.
3495 for my $c ($rule->not_always_defined_in_cond (TRUE)->conds)
3496 {
3497 Automake::Rule::define ($name, 'internal', RULE_AUTOMAKE,
3498 $c, INTERNAL);
3499 $output_rules .= $c->subst_string . "$name:\n";
3500 }
3501 }
3502 return $rule;
3503 }
3506 # $BOOLEAN
3507 # &for_dist_common ($A, $B)
3508 # -------------------------
3509 # Subroutine for &handle_dist: sort files to dist.
3510 #
3511 # We put README first because it then becomes easier to make a
3512 # Usenet-compliant shar file (in these, README must be first).
3513 #
3514 # FIXME: do more ordering of files here.
3515 sub for_dist_common
3516 {
3517 return 0
3518 if $a eq $b;
3519 return -1
3520 if $a eq 'README';
3521 return 1
3522 if $b eq 'README';
3523 return $a cmp $b;
3524 }
3526 # fill_dist_dirs(@FILES)
3527 # ----------------------
3528 # Record in %dist_dirs the directory part of any file passed.
3529 sub fill_dist_dirs (@)
3530 {
3531 my @copy = @_;
3532 foreach (@copy)
3533 {
3534 s/\$\(top_srcdir\)/$topsrcdir/;
3535 s/\$\(srcdir\)/./;
3536 # Strip any leading `./'.
3537 s,^(:?\./+)*,,;
3538 next unless s,/+[^/]+$,,;
3539 $dist_dirs{$_} = 1
3540 unless $_ eq '.';
3541 }
3542 }
3544 # handle_dist
3545 # -----------
3546 # Handle 'dist' target.
3547 sub handle_dist ()
3548 {
3549 # Substutions for distdit.am
3550 my %transform;
3552 # Define DIST_SUBDIRS. This must always be done, regardless of the
3553 # no-dist setting: target like `distclean' or `maintainer-clean' use it.
3554 my $subdirs = var ('SUBDIRS');
3555 if ($subdirs)
3556 {
3557 # If SUBDIRS is conditionally defined, then set DIST_SUBDIRS
3558 # to all possible directories, and use it. If DIST_SUBDIRS is
3559 # defined, just use it.
3561 # Note that we check DIST_SUBDIRS first on purpose, so that
3562 # we don't call has_conditional_contents for now reason.
3563 # (In the past one project used so many conditional subdirectories
3564 # that calling has_conditional_contents on SUBDIRS caused
3565 # automake to grow to 150Mb -- this should not happen with
3566 # the current implementation of has_conditional_contents,
3567 # but it's more efficient to avoid the call anyway.)
3568 if (var ('DIST_SUBDIRS'))
3569 {
3570 }
3571 elsif ($subdirs->has_conditional_contents)
3572 {
3573 define_pretty_variable
3574 ('DIST_SUBDIRS', TRUE, INTERNAL,
3575 uniq ($subdirs->value_as_list_recursive));
3576 }
3577 else
3578 {
3579 # We always define this because that is what `distclean'
3580 # wants.
3581 define_pretty_variable ('DIST_SUBDIRS', TRUE, INTERNAL,
3582 '$(SUBDIRS)');
3583 }
3584 }
3586 # The remaining definitions are only required when a dist target is used.
3587 return if option 'no-dist';
3589 # At least one of the archive formats must be enabled.
3590 if ($relative_dir eq '.')
3591 {
3592 my $archive_defined = option 'no-dist-gzip' ? 0 : 1;
3593 $archive_defined ||=
3594 grep { option "dist-$_" } ('shar', 'zip', 'tarZ', 'bzip2');
3595 error (option 'no-dist-gzip',
3596 "no-dist-gzip specified but no dist-* specified, "
3597 . "at least one archive format must be enabled")
3598 unless $archive_defined;
3599 }
3601 # Look for common files that should be included in distribution.
3602 # If the aux dir is set, and it does not have a Makefile.am, then
3603 # we check for these files there as well.
3604 my $check_aux = 0;
3605 if ($relative_dir eq '.'
3606 && $config_aux_dir_set_in_configure_ac)
3607 {
3608 if (! &is_make_dir ($config_aux_dir))
3609 {
3610 $check_aux = 1;
3611 }
3612 }
3613 foreach my $cfile (@common_files)
3614 {
3615 if (dir_has_case_matching_file ($relative_dir, $cfile)
3616 # The file might be absent, but if it can be built it's ok.
3617 || rule $cfile)
3618 {
3619 &push_dist_common ($cfile);
3620 }
3622 # Don't use `elsif' here because a file might meaningfully
3623 # appear in both directories.
3624 if ($check_aux && dir_has_case_matching_file ($config_aux_dir, $cfile))
3625 {
3626 &push_dist_common ("$config_aux_dir/$cfile")
3627 }
3628 }
3630 # We might copy elements from $configure_dist_common to
3631 # %dist_common if we think we need to. If the file appears in our
3632 # directory, we would have discovered it already, so we don't
3633 # check that. But if the file is in a subdir without a Makefile,
3634 # we want to distribute it here if we are doing `.'. Ugly!
3635 if ($relative_dir eq '.')
3636 {
3637 foreach my $file (split (' ' , $configure_dist_common))
3638 {
3639 push_dist_common ($file)
3640 unless is_make_dir (dirname ($file));
3641 }
3642 }
3644 # Files to distributed. Don't use ->value_as_list_recursive
3645 # as it recursively expands `$(dist_pkgdata_DATA)' etc.
3646 my @dist_common = split (' ', rvar ('DIST_COMMON')->variable_value);
3647 @dist_common = uniq (sort for_dist_common (@dist_common));
3648 variable_delete 'DIST_COMMON';
3649 define_pretty_variable ('DIST_COMMON', TRUE, INTERNAL, @dist_common);
3651 # Now that we've processed DIST_COMMON, disallow further attempts
3652 # to set it.
3653 $handle_dist_run = 1;
3655 # Scan EXTRA_DIST to see if we need to distribute anything from a
3656 # subdir. If so, add it to the list. I didn't want to do this
3657 # originally, but there were so many requests that I finally
3658 # relented.
3659 my $extra_dist = var ('EXTRA_DIST');
3660 # FIXME: This should be fixed to work with conditions. That
3661 # will require only making the entries in %dist_dirs under the
3662 # appropriate condition. This is meaningful if the nature of
3663 # the distribution should depend upon the configure options
3664 # used.
3665 fill_dist_dirs ($extra_dist->value_as_list_recursive (skip_ac_subst => 1))
3666 if $extra_dist;
3668 # We have to check DIST_COMMON for extra directories in case the
3669 # user put a source used in AC_OUTPUT into a subdir.
3670 fill_dist_dirs (rvar ('DIST_COMMON')
3671 ->value_as_list_recursive (skip_ac_subst => 1));
3673 $transform{'DISTCHECK-HOOK'} = !! rule 'distcheck-hook';
3674 $transform{'GETTEXT'} = $seen_gettext && !$seen_gettext_external;
3676 # Prepend $(distdir) to each directory given.
3677 my %rewritten = map { '$(distdir)/' . "$_" => 1 } keys %dist_dirs;
3678 $transform{'DISTDIRS'} = join (' ', sort keys %rewritten);
3680 # If the target `dist-hook' exists, make sure it is run. This
3681 # allows users to do random weird things to the distribution
3682 # before it is packaged up.
3683 push (@dist_targets, 'dist-hook')
3684 if user_phony_rule 'dist-hook';
3685 $transform{'DIST-TARGETS'} = join (' ', @dist_targets);
3687 my $flm = option ('filename-length-max');
3688 my $filename_filter = $flm ? '.' x $flm->[1] : '';
3690 $output_rules .= &file_contents ('distdir',
3691 new Automake::Location,
3692 %transform,
3693 FILENAME_FILTER => $filename_filter);
3694 }
3697 # check_directory ($NAME, $WHERE)
3698 # -------------------------------
3699 # Ensure $NAME is a directory, and that it uses sane name.
3700 # Use $WHERE as a location in the diagnostic, if any.
3701 sub check_directory ($$)
3702 {
3703 my ($dir, $where) = @_;
3705 error $where, "required directory $relative_dir/$dir does not exist"
3706 unless -d "$relative_dir/$dir";
3708 # If an `obj/' directory exists, BSD make will enter it before
3709 # reading `Makefile'. Hence the `Makefile' in the current directory
3710 # will not be read.
3711 #
3712 # % cat Makefile
3713 # all:
3714 # echo Hello
3715 # % cat obj/Makefile
3716 # all:
3717 # echo World
3718 # % make # GNU make
3719 # echo Hello
3720 # Hello
3721 # % pmake # BSD make
3722 # echo World
3723 # World
3724 msg ('portability', $where,
3725 "naming a subdirectory `obj' causes troubles with BSD make")
3726 if $dir eq 'obj';
3728 # `aux' is probably the most important of the following forbidden name,
3729 # since it's tempting to use it as an AC_CONFIG_AUX_DIR.
3730 msg ('portability', $where,
3731 "name `$dir' is reserved on W32 and DOS platforms")
3732 if grep (/^\Q$dir\E$/i, qw/aux lpt1 lpt2 lpt3 com1 com2 com3 com4 con prn/);
3733 }
3735 # check_directories_in_var ($VARIABLE)
3736 # ------------------------------------
3737 # Recursively check all items in variables $VARIABLE as directories
3738 sub check_directories_in_var ($)
3739 {
3740 my ($var) = @_;
3741 $var->traverse_recursively
3742 (sub
3743 {
3744 my ($var, $val, $cond, $full_cond) = @_;
3745 check_directory ($val, $var->rdef ($cond)->location);
3746 return ();
3747 },
3748 undef,
3749 skip_ac_subst => 1);
3750 }
3752 # &handle_subdirs ()
3753 # ------------------
3754 # Handle subdirectories.
3755 sub handle_subdirs ()
3756 {
3757 my $subdirs = var ('SUBDIRS');
3758 return
3759 unless $subdirs;
3761 check_directories_in_var $subdirs;
3763 my $dsubdirs = var ('DIST_SUBDIRS');
3764 check_directories_in_var $dsubdirs
3765 if $dsubdirs;
3767 $output_rules .= &file_contents ('subdirs', new Automake::Location);
3768 rvar ('RECURSIVE_TARGETS')->rdef (TRUE)->{'pretty'} = VAR_SORTED; # Gross!
3769 }
3772 # ($REGEN, @DEPENDENCIES)
3773 # &scan_aclocal_m4
3774 # ----------------
3775 # If aclocal.m4 creation is automated, return the list of its dependencies.
3776 sub scan_aclocal_m4 ()
3777 {
3778 my $regen_aclocal = 0;
3780 set_seen 'CONFIG_STATUS_DEPENDENCIES';
3781 set_seen 'CONFIGURE_DEPENDENCIES';
3783 if (-f 'aclocal.m4')
3784 {
3785 &define_variable ("ACLOCAL_M4", '$(top_srcdir)/aclocal.m4', INTERNAL);
3787 my $aclocal = new Automake::XFile "< aclocal.m4";
3788 my $line = $aclocal->getline;
3789 $regen_aclocal = $line =~ 'generated automatically by aclocal';
3790 }
3792 my @ac_deps = ();
3794 if (set_seen ('ACLOCAL_M4_SOURCES'))
3795 {
3796 push (@ac_deps, '$(ACLOCAL_M4_SOURCES)');
3797 msg_var ('obsolete', 'ACLOCAL_M4_SOURCES',
3798 "`ACLOCAL_M4_SOURCES' is obsolete.\n"
3799 . "It should be safe to simply remove it.");
3800 }
3802 # Note that it might be possible that aclocal.m4 doesn't exist but
3803 # should be auto-generated. This case probably isn't very
3804 # important.
3806 return ($regen_aclocal, @ac_deps);
3807 }
3810 # Helper function for substitute_ac_subst_variables.
3811 sub substitute_ac_subst_variables_worker($)
3812 {
3813 my ($token) = @_;
3814 return "\@$token\@" if var $token;
3815 return "\${$token\}";
3816 }
3818 # substitute_ac_subst_variables ($TEXT)
3819 # -------------------------------------
3820 # Replace any occurence of ${FOO} in $TEXT by @FOO@ if FOO is an AC_SUBST
3821 # variable.
3822 sub substitute_ac_subst_variables ($)
3823 {
3824 my ($text) = @_;
3825 $text =~ s/\${([^ \t=:+{}]+)}/&substitute_ac_subst_variables_worker ($1)/ge;
3826 return $text;
3827 }
3829 # @DEPENDENCIES
3830 # &prepend_srcdir (@INPUTS)
3831 # -------------------------
3832 # Prepend $(srcdir) or $(top_srcdir) to all @INPUTS. The idea is that
3833 # if an input file has a directory part the same as the current
3834 # directory, then the directory part is simply replaced by $(srcdir).
3835 # But if the directory part is different, then $(top_srcdir) is
3836 # prepended.
3837 sub prepend_srcdir (@)
3838 {
3839 my (@inputs) = @_;
3840 my @newinputs;
3842 foreach my $single (@inputs)
3843 {
3844 if (dirname ($single) eq $relative_dir)
3845 {
3846 push (@newinputs, '$(srcdir)/' . basename ($single));
3847 }
3848 else
3849 {
3850 push (@newinputs, '$(top_srcdir)/' . $single);
3851 }
3852 }
3853 return @newinputs;
3854 }
3856 # @DEPENDENCIES
3857 # rewrite_inputs_into_dependencies ($OUTPUT, @INPUTS)
3858 # ---------------------------------------------------
3859 # Compute a list of dependencies appropriate for the rebuild
3860 # rule of
3861 # AC_CONFIG_FILES($OUTPUT:$INPUT[0]:$INPUTS[1]:...)
3862 # Also distribute $INPUTs which are not build by another AC_CONFIG_FILES.
3863 sub rewrite_inputs_into_dependencies ($@)
3864 {
3865 my ($file, @inputs) = @_;
3866 my @res = ();
3868 for my $i (@inputs)
3869 {
3870 # We cannot create dependencies on shell variables.
3871 next if (substitute_ac_subst_variables $i) =~ /\$/;
3873 if (exists $ac_config_files_location{$i})
3874 {
3875 my $di = dirname $i;
3876 if ($di eq $relative_dir)
3877 {
3878 $i = basename $i;
3879 }
3880 # In the top-level Makefile we do not use $(top_builddir), because
3881 # we are already there, and since the targets are built without
3882 # a $(top_builddir), it helps BSD Make to match them with
3883 # dependencies.
3884 elsif ($relative_dir ne '.')
3885 {
3886 $i = '$(top_builddir)/' . $i;
3887 }
3888 }
3889 else
3890 {
3891 msg ('error', $ac_config_files_location{$file},
3892 "required file `$i' not found")
3893 unless $i =~ /\$/ || exists $output_files{$i} || -f $i;
3894 ($i) = prepend_srcdir ($i);
3895 push_dist_common ($i);
3896 }
3897 push @res, $i;
3898 }
3899 return @res;
3900 }
3904 # &handle_configure ($MAKEFILE_AM, $MAKEFILE_IN, $MAKEFILE, @INPUTS)
3905 # ------------------------------------------------------------------
3906 # Handle remaking and configure stuff.
3907 # We need the name of the input file, to do proper remaking rules.
3908 sub handle_configure ($$$@)
3909 {
3910 my ($makefile_am, $makefile_in, $makefile, @inputs) = @_;
3912 prog_error 'empty @inputs'
3913 unless @inputs;
3915 my ($rel_makefile_am, $rel_makefile_in) = prepend_srcdir ($makefile_am,
3916 $makefile_in);
3917 my $rel_makefile = basename $makefile;
3919 my $colon_infile = ':' . join (':', @inputs);
3920 $colon_infile = '' if $colon_infile eq ":$makefile.in";
3921 my @rewritten = rewrite_inputs_into_dependencies ($makefile, @inputs);
3922 my ($regen_aclocal_m4, @aclocal_m4_deps) = scan_aclocal_m4;
3923 define_pretty_variable ('am__aclocal_m4_deps', TRUE, INTERNAL,
3924 @configure_deps, @aclocal_m4_deps,
3925 '$(top_srcdir)/' . $configure_ac);
3926 my @configuredeps = ('$(am__aclocal_m4_deps)', '$(CONFIGURE_DEPENDENCIES)');
3927 push @configuredeps, '$(ACLOCAL_M4)' if -f 'aclocal.m4';
3928 define_pretty_variable ('am__configure_deps', TRUE, INTERNAL,
3929 @configuredeps);
3931 $output_rules .= file_contents
3932 ('configure',
3933 new Automake::Location,
3934 MAKEFILE => $rel_makefile,
3935 'MAKEFILE-DEPS' => "@rewritten",
3936 'CONFIG-MAKEFILE' => ($relative_dir eq '.') ? '$@' : '$(subdir)/$@',
3937 'MAKEFILE-IN' => $rel_makefile_in,
3938 'MAKEFILE-IN-DEPS' => "@include_stack",
3939 'MAKEFILE-AM' => $rel_makefile_am,
3940 STRICTNESS => global_option 'cygnus'
3941 ? 'cygnus' : $strictness_name,
3942 'USE-DEPS' => global_option 'no-dependencies'
3943 ? ' --ignore-deps' : '',
3944 'MAKEFILE-AM-SOURCES' => "$makefile$colon_infile",
3945 'REGEN-ACLOCAL-M4' => $regen_aclocal_m4);
3947 if ($relative_dir eq '.')
3948 {
3949 &push_dist_common ('acconfig.h')
3950 if -f 'acconfig.h';
3951 }
3953 # If we have a configure header, require it.
3954 my $hdr_index = 0;
3955 my @distclean_config;
3956 foreach my $spec (@config_headers)
3957 {
3958 $hdr_index += 1;
3959 # $CONFIG_H_PATH: config.h from top level.
3960 my ($config_h_path, @ins) = split_config_file_spec ($spec);
3961 my $config_h_dir = dirname ($config_h_path);
3963 # If the header is in the current directory we want to build
3964 # the header here. Otherwise, if we're at the topmost
3965 # directory and the header's directory doesn't have a
3966 # Makefile, then we also want to build the header.
3967 if ($relative_dir eq $config_h_dir
3968 || ($relative_dir eq '.' && ! &is_make_dir ($config_h_dir)))
3969 {
3970 my ($cn_sans_dir, $stamp_dir);
3971 if ($relative_dir eq $config_h_dir)
3972 {
3973 $cn_sans_dir = basename ($config_h_path);
3974 $stamp_dir = '';
3975 }
3976 else
3977 {
3978 $cn_sans_dir = $config_h_path;
3979 if ($config_h_dir eq '.')
3980 {
3981 $stamp_dir = '';
3982 }
3983 else
3984 {
3985 $stamp_dir = $config_h_dir . '/';
3986 }
3987 }
3989 # This will also distribute all inputs.
3990 @ins = rewrite_inputs_into_dependencies ($config_h_path, @ins);
3992 # Cannot define rebuild rules for filenames with shell variables.
3993 next if (substitute_ac_subst_variables $config_h_path) =~ /\$/;
3995 # Header defined in this directory.
3996 my @files;
3997 if (-f $config_h_path . '.top')
3998 {
3999 push (@files, "$cn_sans_dir.top");
4000 }
4001 if (-f $config_h_path . '.bot')
4002 {
4003 push (@files, "$cn_sans_dir.bot");
4004 }
4006 push_dist_common (@files);
4008 # For now, acconfig.h can only appear in the top srcdir.
4009 if (-f 'acconfig.h')
4010 {
4011 push (@files, '$(top_srcdir)/acconfig.h');
4012 }
4014 my $stamp = "${stamp_dir}stamp-h${hdr_index}";
4015 $output_rules .=
4016 file_contents ('remake-hdr',
4017 new Automake::Location,
4018 FILES => "@files",
4019 CONFIG_H => $cn_sans_dir,
4020 CONFIG_HIN => $ins[0],
4021 CONFIG_H_DEPS => "@ins",
4022 CONFIG_H_PATH => $config_h_path,
4023 STAMP => "$stamp");
4025 push @distclean_config, $cn_sans_dir, $stamp;
4026 }
4027 }
4029 $output_rules .= file_contents ('clean-hdr',
4030 new Automake::Location,
4031 FILES => "@distclean_config")
4032 if @distclean_config;
4034 # Distribute and define mkinstalldirs only if it is already present
4035 # in the package, for backward compatibility (some people may still
4036 # use $(mkinstalldirs)).
4037 my $mkidpath = "$config_aux_dir/mkinstalldirs";
4038 if (-f $mkidpath)
4039 {
4040 # Use require_file so that any existing script gets updated
4041 # by --force-missing.
4042 require_conf_file ($mkidpath, FOREIGN, 'mkinstalldirs');
4043 define_variable ('mkinstalldirs',
4044 "\$(SHELL) $am_config_aux_dir/mkinstalldirs", INTERNAL);
4045 }
4046 else
4047 {
4048 # Use $(install_sh), not $(mkdir_p) because the latter requires
4049 # at least one argument, and $(mkinstalldirs) used to work
4050 # even without arguments (e.g. $(mkinstalldirs) $(conditional_dir)).
4051 define_variable ('mkinstalldirs', '$(install_sh) -d', INTERNAL);
4052 }
4054 reject_var ('CONFIG_HEADER',
4055 "`CONFIG_HEADER' is an anachronism; now determined "
4056 . "automatically\nfrom `$configure_ac'");
4058 my @config_h;
4059 foreach my $spec (@config_headers)
4060 {
4061 my ($out, @ins) = split_config_file_spec ($spec);
4062 # Generate CONFIG_HEADER define.
4063 if ($relative_dir eq dirname ($out))
4064 {
4065 push @config_h, basename ($out);
4066 }
4067 else
4068 {
4069 push @config_h, "\$(top_builddir)/$out";
4070 }
4071 }
4072 define_variable ("CONFIG_HEADER", "@config_h", INTERNAL)
4073 if @config_h;
4075 # Now look for other files in this directory which must be remade
4076 # by config.status, and generate rules for them.
4077 my @actual_other_files = ();
4078 foreach my $lfile (@other_input_files)
4079 {
4080 my $file;
4081 my @inputs;
4082 if ($lfile =~ /^([^:]*):(.*)$/)
4083 {
4084 # This is the ":" syntax of AC_OUTPUT.
4085 $file = $1;
4086 @inputs = split (':', $2);
4087 }
4088 else
4089 {
4090 # Normal usage.
4091 $file = $lfile;
4092 @inputs = $file . '.in';
4093 }
4095 # Automake files should not be stored in here, but in %MAKE_LIST.
4096 prog_error ("$lfile in \@other_input_files\n"
4097 . "\@other_input_files = (@other_input_files)")
4098 if -f $file . '.am';
4100 my $local = basename ($file);
4102 # Make sure the dist directory for each input file is created.
4103 # We only have to do this at the topmost level though. This
4104 # is a bit ugly but it easier than spreading out the logic,
4105 # especially in cases like AC_OUTPUT(foo/out:bar/in), where
4106 # there is no Makefile in bar/.
4107 fill_dist_dirs (@inputs)
4108 if $relative_dir eq '.';
4110 # We skip files that aren't in this directory. However, if
4111 # the file's directory does not have a Makefile, and we are
4112 # currently doing `.', then we create a rule to rebuild the
4113 # file in the subdir.
4114 my $fd = dirname ($file);
4115 if ($fd ne $relative_dir)
4116 {
4117 if ($relative_dir eq '.' && ! &is_make_dir ($fd))
4118 {
4119 $local = $file;
4120 }
4121 else
4122 {
4123 next;
4124 }
4125 }
4127 my @rewritten_inputs = rewrite_inputs_into_dependencies ($file, @inputs);
4129 # Cannot output rules for shell variables.
4130 next if (substitute_ac_subst_variables $local) =~ /\$/;
4132 $output_rules .= ($local . ': '
4133 . '$(top_builddir)/config.status '
4134 . "@rewritten_inputs\n"
4135 . "\t"
4136 . 'cd $(top_builddir) && '
4137 . '$(SHELL) ./config.status '
4138 . ($relative_dir eq '.' ? '' : '$(subdir)/')
4139 . '$@'
4140 . "\n");
4141 push (@actual_other_files, $local);
4142 }
4144 # For links we should clean destinations and distribute sources.
4145 foreach my $spec (@config_links)
4146 {
4147 my ($link, $file) = split /:/, $spec;
4148 # Some people do AC_CONFIG_LINKS($computed). We only handle
4149 # the DEST:SRC form.
4150 next unless $file;
4151 my $where = $ac_config_files_location{$link};
4153 # Skip destinations that contain shell variables.
4154 if ((substitute_ac_subst_variables $link) !~ /\$/)
4155 {
4156 # We skip links that aren't in this directory. However, if
4157 # the link's directory does not have a Makefile, and we are
4158 # currently doing `.', then we add the link to CONFIG_CLEAN_FILES
4159 # in `.'s Makefile.in.
4160 my $local = basename ($link);
4161 my $fd = dirname ($link);
4162 if ($fd ne $relative_dir)
4163 {
4164 if ($relative_dir eq '.' && ! &is_make_dir ($fd))
4165 {
4166 $local = $link;
4167 }
4168 else
4169 {
4170 $local = undef;
4171 }
4172 }
4173 push @actual_other_files, $local if $local;
4174 }
4176 # Do not process sources that contain shell variables.
4177 if ((substitute_ac_subst_variables $file) !~ /\$/)
4178 {
4179 my $fd = dirname ($file);
4181 # Make sure the dist directory for each input file is created.
4182 # We only have to do this at the topmost level though.
4183 if ($relative_dir eq '.')
4184 {
4185 $dist_dirs{$fd} = 1;
4186 }
4188 # We distribute files that are in this directory.
4189 # At the top-level (`.') we also distribute files whose
4190 # directory does not have a Makefile.
4191 if (($fd eq $relative_dir)
4192 || ($relative_dir eq '.' && ! &is_make_dir ($fd)))
4193 {
4194 # The following will distribute $file as a side-effect when
4195 # it is appropriate (i.e., when $file is not already an output).
4196 # We do not need the result, just the side-effect.
4197 rewrite_inputs_into_dependencies ($link, $file);
4198 }
4199 }
4200 }
4202 # These files get removed by "make distclean".
4203 define_pretty_variable ('CONFIG_CLEAN_FILES', TRUE, INTERNAL,
4204 @actual_other_files);
4205 }
4207 # Handle C headers.
4208 sub handle_headers
4209 {
4210 my @r = &am_install_var ('-defaultdist', 'header', 'HEADERS', 'include',
4211 'oldinclude', 'pkginclude',
4212 'noinst', 'check');
4213 foreach (@r)
4214 {
4215 next unless $_->[1] =~ /\..*$/;
4216 &saw_extension ($&);
4217 }
4218 }
4220 sub handle_gettext
4221 {
4222 return if ! $seen_gettext || $relative_dir ne '.';
4224 my $subdirs = var 'SUBDIRS';
4226 if (! $subdirs)
4227 {
4228 err_ac "AM_GNU_GETTEXT used but SUBDIRS not defined";
4229 return;
4230 }
4232 # Perform some sanity checks to help users get the right setup.
4233 # We disable these tests when po/ doesn't exist in order not to disallow
4234 # unusual gettext setups.
4235 #
4236 # Bruno Haible:
4237 # | The idea is:
4238 # |
4239 # | 1) If a package doesn't have a directory po/ at top level, it
4240 # | will likely have multiple po/ directories in subpackages.
4241 # |
4242 # | 2) It is useful to warn for the absence of intl/ if AM_GNU_GETTEXT
4243 # | is used without 'external'. It is also useful to warn for the
4244 # | presence of intl/ if AM_GNU_GETTEXT([external]) is used. Both
4245 # | warnings apply only to the usual layout of packages, therefore
4246 # | they should both be disabled if no po/ directory is found at
4247 # | top level.
4249 if (-d 'po')
4250 {
4251 my @subdirs = $subdirs->value_as_list_recursive;
4253 msg_var ('syntax', $subdirs,
4254 "AM_GNU_GETTEXT used but `po' not in SUBDIRS")
4255 if ! grep ($_ eq 'po', @subdirs);
4257 # intl/ is not required when AM_GNU_GETTEXT is called with
4258 # the `external' option.
4259 msg_var ('syntax', $subdirs,
4260 "AM_GNU_GETTEXT used but `intl' not in SUBDIRS")
4261 if (! $seen_gettext_external
4262 && ! grep ($_ eq 'intl', @subdirs));
4264 # intl/ should not be used with AM_GNU_GETTEXT([external])
4265 msg_var ('syntax', $subdirs,
4266 "`intl' should not be in SUBDIRS when "
4267 . "AM_GNU_GETTEXT([external]) is used")
4268 if ($seen_gettext_external && grep ($_ eq 'intl', @subdirs));
4269 }
4271 require_file ($ac_gettext_location, GNU, 'ABOUT-NLS');
4272 }
4274 # Handle footer elements.
4275 sub handle_footer
4276 {
4277 reject_rule ('.SUFFIXES',
4278 "use variable `SUFFIXES', not target `.SUFFIXES'");
4280 # Note: AIX 4.1 /bin/make will fail if any suffix rule appears
4281 # before .SUFFIXES. So we make sure that .SUFFIXES appears before
4282 # anything else, by sticking it right after the default: target.
4283 $output_header .= ".SUFFIXES:\n";
4284 my $suffixes = var 'SUFFIXES';
4285 my @suffixes = Automake::Rule::suffixes;
4286 if (@suffixes || $suffixes)
4287 {
4288 # Make sure SUFFIXES has unique elements. Sort them to ensure
4289 # the output remains consistent. However, $(SUFFIXES) is
4290 # always at the start of the list, unsorted. This is done
4291 # because make will choose rules depending on the ordering of
4292 # suffixes, and this lets the user have some control. Push
4293 # actual suffixes, and not $(SUFFIXES). Some versions of make
4294 # do not like variable substitutions on the .SUFFIXES line.
4295 my @user_suffixes = ($suffixes
4296 ? $suffixes->value_as_list_recursive : ());
4298 my %suffixes = map { $_ => 1 } @suffixes;
4299 delete @suffixes{@user_suffixes};
4301 $output_header .= (".SUFFIXES: "
4302 . join (' ', @user_suffixes, sort keys %suffixes)
4303 . "\n");
4304 }
4306 $output_trailer .= file_contents ('footer', new Automake::Location);
4307 }
4310 # Generate `make install' rules.
4311 sub handle_install ()
4312 {
4313 $output_rules .= &file_contents
4314 ('install',
4315 new Automake::Location,
4316 maybe_BUILT_SOURCES => (set_seen ('BUILT_SOURCES')
4317 ? (" \$(BUILT_SOURCES)\n"
4318 . "\t\$(MAKE) \$(AM_MAKEFLAGS)")
4319 : ''),
4320 'installdirs-local' => (user_phony_rule 'installdirs-local'
4321 ? ' installdirs-local' : ''),
4322 am__installdirs => variable_value ('am__installdirs') || '');
4323 }
4326 # Deal with all and all-am.
4327 sub handle_all ($)
4328 {
4329 my ($makefile) = @_;
4331 # Output `all-am'.
4333 # Put this at the beginning for the sake of non-GNU makes. This
4334 # is still wrong if these makes can run parallel jobs. But it is
4335 # right enough.
4336 unshift (@all, basename ($makefile));
4338 foreach my $spec (@config_headers)
4339 {
4340 my ($out, @ins) = split_config_file_spec ($spec);
4341 push (@all, basename ($out))
4342 if dirname ($out) eq $relative_dir;
4343 }
4345 # Install `all' hooks.
4346 push (@all, "all-local")
4347 if user_phony_rule "all-local";
4349 &pretty_print_rule ("all-am:", "\t\t", @all);
4350 &depend ('.PHONY', 'all-am', 'all');
4353 # Output `all'.
4355 my @local_headers = ();
4356 push @local_headers, '$(BUILT_SOURCES)'
4357 if var ('BUILT_SOURCES');
4358 foreach my $spec (@config_headers)
4359 {
4360 my ($out, @ins) = split_config_file_spec ($spec);
4361 push @local_headers, basename ($out)
4362 if dirname ($out) eq $relative_dir;
4363 }
4365 if (@local_headers)
4366 {
4367 # We need to make sure config.h is built before we recurse.
4368 # We also want to make sure that built sources are built
4369 # before any ordinary `all' targets are run. We can't do this
4370 # by changing the order of dependencies to the "all" because
4371 # that breaks when using parallel makes. Instead we handle
4372 # things explicitly.
4373 $output_all .= ("all: @local_headers"
4374 . "\n\t"
4375 . '$(MAKE) $(AM_MAKEFLAGS) '
4376 . (var ('SUBDIRS') ? 'all-recursive' : 'all-am')
4377 . "\n\n");
4378 }
4379 else
4380 {
4381 $output_all .= "all: " . (var ('SUBDIRS')
4382 ? 'all-recursive' : 'all-am') . "\n\n";
4383 }
4384 }
4387 # &do_check_merge_target ()
4388 # -------------------------
4389 # Handle check merge target specially.
4390 sub do_check_merge_target ()
4391 {
4392 # Include user-defined local form of target.
4393 push @check_tests, 'check-local'
4394 if user_phony_rule 'check-local';
4396 # In --cygnus mode, check doesn't depend on all.
4397 if (option 'cygnus')
4398 {
4399 # Just run the local check rules.
4400 pretty_print_rule ('check-am:', "\t\t", @check);
4401 }
4402 else
4403 {
4404 # The check target must depend on the local equivalent of
4405 # `all', to ensure all the primary targets are built. Then it
4406 # must build the local check rules.
4407 $output_rules .= "check-am: all-am\n";
4408 pretty_print_rule ("\t\$(MAKE) \$(AM_MAKEFLAGS)", "\t ",
4409 @check)
4410 if @check;
4411 }
4412 pretty_print_rule ("\t\$(MAKE) \$(AM_MAKEFLAGS)", "\t ",
4413 @check_tests)
4414 if @check_tests;
4416 depend '.PHONY', 'check', 'check-am';
4417 # Handle recursion. We have to honor BUILT_SOURCES like for `all:'.
4418 $output_rules .= ("check: "
4419 . (var ('BUILT_SOURCES')
4420 ? "\$(BUILT_SOURCES)\n\t\$(MAKE) \$(AM_MAKEFLAGS) "
4421 : '')
4422 . (var ('SUBDIRS') ? 'check-recursive' : 'check-am')
4423 . "\n");
4424 }
4426 # handle_clean ($MAKEFILE)
4427 # ------------------------
4428 # Handle all 'clean' targets.
4429 sub handle_clean ($)
4430 {
4431 my ($makefile) = @_;
4433 # Clean the files listed in user variables if they exist.
4434 $clean_files{'$(MOSTLYCLEANFILES)'} = MOSTLY_CLEAN
4435 if var ('MOSTLYCLEANFILES');
4436 $clean_files{'$(CLEANFILES)'} = CLEAN
4437 if var ('CLEANFILES');
4438 $clean_files{'$(DISTCLEANFILES)'} = DIST_CLEAN
4439 if var ('DISTCLEANFILES');
4440 $clean_files{'$(MAINTAINERCLEANFILES)'} = MAINTAINER_CLEAN
4441 if var ('MAINTAINERCLEANFILES');
4443 # Built sources are automatically removed by maintainer-clean.
4444 $clean_files{'$(BUILT_SOURCES)'} = MAINTAINER_CLEAN
4445 if var ('BUILT_SOURCES');
4447 # Compute a list of "rm"s to run for each target.
4448 my %rms = (MOSTLY_CLEAN, [],
4449 CLEAN, [],
4450 DIST_CLEAN, [],
4451 MAINTAINER_CLEAN, []);
4453 foreach my $file (keys %clean_files)
4454 {
4455 my $when = $clean_files{$file};
4456 prog_error 'invalid entry in %clean_files'
4457 unless exists $rms{$when};
4459 my $rm = "rm -f $file";
4460 # If file is a variable, make sure when don't call `rm -f' without args.
4461 $rm ="test -z \"$file\" || $rm"
4462 if ($file =~ /^\s*\$(\(.*\)|\{.*\})\s*$/);
4464 push @{$rms{$when}}, "\t-$rm\n";
4465 }
4467 $output_rules .= &file_contents
4468 ('clean',
4469 new Automake::Location,
4470 MOSTLYCLEAN_RMS => join ('', sort @{$rms{&MOSTLY_CLEAN}}),
4471 CLEAN_RMS => join ('', sort @{$rms{&CLEAN}}),
4472 DISTCLEAN_RMS => join ('', sort @{$rms{&DIST_CLEAN}}),
4473 MAINTAINER_CLEAN_RMS => join ('', sort @{$rms{&MAINTAINER_CLEAN}}),
4474 MAKEFILE => basename $makefile,
4475 );
4476 }
4479 # &target_cmp ($A, $B)
4480 # --------------------
4481 # Subroutine for &handle_factored_dependencies to let `.PHONY' and
4482 # other `.TARGETS' be last.
4483 sub target_cmp
4484 {
4485 return 0 if $a eq $b;
4487 my $a1 = substr ($a, 0, 1);
4488 my $b1 = substr ($b, 0, 1);
4489 if ($a1 ne $b1)
4490 {
4491 return -1 if $b1 eq '.';
4492 return 1 if $a1 eq '.';
4493 }
4494 return $a cmp $b;
4495 }
4498 # &handle_factored_dependencies ()
4499 # --------------------------------
4500 # Handle everything related to gathered targets.
4501 sub handle_factored_dependencies
4502 {
4503 # Reject bad hooks.
4504 foreach my $utarg ('uninstall-data-local', 'uninstall-data-hook',
4505 'uninstall-exec-local', 'uninstall-exec-hook',
4506 'uninstall-dvi-local',
4507 'uninstall-html-local',
4508 'uninstall-info-local',
4509 'uninstall-pdf-local',
4510 'uninstall-ps-local')
4511 {
4512 my $x = $utarg;
4513 $x =~ s/-.*-/-/;
4514 reject_rule ($utarg, "use `$x', not `$utarg'");
4515 }
4517 reject_rule ('install-local',
4518 "use `install-data-local' or `install-exec-local', "
4519 . "not `install-local'");
4521 reject_rule ('install-hook',
4522 "use `install-data-hook' or `install-exec-hook', "
4523 . "not `install-hook'");
4525 # Install the -local hooks.
4526 foreach (keys %dependencies)
4527 {
4528 # Hooks are installed on the -am targets.
4529 s/-am$// or next;
4530 depend ("$_-am", "$_-local")
4531 if user_phony_rule "$_-local";
4532 }
4534 # Install the -hook hooks.
4535 # FIXME: Why not be as liberal as we are with -local hooks?
4536 foreach ('install-exec', 'install-data', 'uninstall')
4537 {
4538 if (user_phony_rule "$_-hook")
4539 {
4540 $actions{"$_-am"} .=
4541 ("\t\@\$(NORMAL_INSTALL)\n"
4542 . "\t" . '$(MAKE) $(AM_MAKEFLAGS) ' . "$_-hook\n");
4543 depend ('.MAKE', "$_-am");
4544 }
4545 }
4547 # All the required targets are phony.
4548 depend ('.PHONY', keys %required_targets);
4550 # Actually output gathered targets.
4551 foreach (sort target_cmp keys %dependencies)
4552 {
4553 # If there is nothing about this guy, skip it.
4554 next
4555 unless (@{$dependencies{$_}}
4556 || $actions{$_}
4557 || $required_targets{$_});
4559 # Define gathered targets in undefined conditions.
4560 # FIXME: Right now we must handle .PHONY as an exception,
4561 # because people write things like
4562 # .PHONY: myphonytarget
4563 # to append dependencies. This would not work if Automake
4564 # refrained from defining its own .PHONY target as it does
4565 # with other overridden targets.
4566 # Likewise for `.MAKE'.
4567 my @undefined_conds = (TRUE,);
4568 if ($_ ne '.PHONY' && $_ ne '.MAKE')
4569 {
4570 @undefined_conds =
4571 Automake::Rule::define ($_, 'internal',
4572 RULE_AUTOMAKE, TRUE, INTERNAL);
4573 }
4574 my @uniq_deps = uniq (sort @{$dependencies{$_}});
4575 foreach my $cond (@undefined_conds)
4576 {
4577 my $condstr = $cond->subst_string;
4578 &pretty_print_rule ("$condstr$_:", "$condstr\t", @uniq_deps);
4579 $output_rules .= $actions{$_} if defined $actions{$_};
4580 $output_rules .= "\n";
4581 }
4582 }
4583 }
4586 # &handle_tests_dejagnu ()
4587 # ------------------------
4588 sub handle_tests_dejagnu
4589 {
4590 push (@check_tests, 'check-DEJAGNU');
4591 $output_rules .= file_contents ('dejagnu', new Automake::Location);
4592 }
4595 # Handle TESTS variable and other checks.
4596 sub handle_tests
4597 {
4598 if (option 'dejagnu')
4599 {
4600 &handle_tests_dejagnu;
4601 }
4602 else
4603 {
4604 foreach my $c ('DEJATOOL', 'RUNTEST', 'RUNTESTFLAGS')
4605 {
4606 reject_var ($c, "`$c' defined but `dejagnu' not in "
4607 . "`AUTOMAKE_OPTIONS'");
4608 }
4609 }
4611 if (var ('TESTS'))
4612 {
4613 push (@check_tests, 'check-TESTS');
4614 $output_rules .= &file_contents ('check', new Automake::Location);
4616 # Tests that are known programs should have $(EXEEXT) appended.
4617 append_exeext { exists $known_programs{$_[0]} } 'TESTS';
4618 }
4619 }
4621 # Handle Emacs Lisp.
4622 sub handle_emacs_lisp
4623 {
4624 my @elfiles = &am_install_var ('-candist', 'lisp', 'LISP',
4625 'lisp', 'noinst');
4627 return if ! @elfiles;
4629 define_pretty_variable ('am__ELFILES', TRUE, INTERNAL,
4630 map { $_->[1] } @elfiles);
4631 define_pretty_variable ('am__ELCFILES', TRUE, INTERNAL,
4632 '$(am__ELFILES:.el=.elc)');
4633 # This one can be overridden by users.
4634 define_pretty_variable ('ELCFILES', TRUE, INTERNAL, '$(LISP:.el=.elc)');
4636 push @all, '$(ELCFILES)';
4638 require_variables ($elfiles[0][0], "Emacs Lisp sources seen", TRUE,
4639 'EMACS', 'lispdir');
4640 require_conf_file ($elfiles[0][0], FOREIGN, 'elisp-comp');
4641 &define_variable ('elisp_comp', "$am_config_aux_dir/elisp-comp", INTERNAL);
4642 }
4644 # Handle Python
4645 sub handle_python
4646 {
4647 my @pyfiles = &am_install_var ('-defaultdist', 'python', 'PYTHON',
4648 'noinst');
4649 return if ! @pyfiles;
4651 require_variables ($pyfiles[0][0], "Python sources seen", TRUE, 'PYTHON');
4652 require_conf_file ($pyfiles[0][0], FOREIGN, 'py-compile');
4653 &define_variable ('py_compile', "$am_config_aux_dir/py-compile", INTERNAL);
4654 }
4656 # Handle Java.
4657 sub handle_java
4658 {
4659 my @sourcelist = &am_install_var ('-candist',
4660 'java', 'JAVA',
4661 'java', 'noinst', 'check');
4662 return if ! @sourcelist;
4664 my @prefix = am_primary_prefixes ('JAVA', 1,
4665 'java', 'noinst', 'check');
4667 my $dir;
4668 foreach my $curs (@prefix)
4669 {
4670 next
4671 if $curs eq 'EXTRA';
4673 err_var "${curs}_JAVA", "multiple _JAVA primaries in use"
4674 if defined $dir;
4675 $dir = $curs;
4676 }
4679 push (@all, 'class' . $dir . '.stamp');
4680 }
4683 # Handle some of the minor options.
4684 sub handle_minor_options
4685 {
4686 if (option 'readme-alpha')
4687 {
4688 if ($relative_dir eq '.')
4689 {
4690 if ($package_version !~ /^$GNITS_VERSION_PATTERN$/)
4691 {
4692 msg ('error-gnits', $package_version_location,
4693 "version `$package_version' doesn't follow " .
4694 "Gnits standards");
4695 }
4696 if (defined $1 && -f 'README-alpha')
4697 {
4698 # This means we have an alpha release. See
4699 # GNITS_VERSION_PATTERN for details.
4700 push_dist_common ('README-alpha');
4701 }
4702 }
4703 }
4704 }
4706 ################################################################
4708 # ($OUTPUT, @INPUTS)
4709 # &split_config_file_spec ($SPEC)
4710 # -------------------------------
4711 # Decode the Autoconf syntax for config files (files, headers, links
4712 # etc.).
4713 sub split_config_file_spec ($)
4714 {
4715 my ($spec) = @_;
4716 my ($output, @inputs) = split (/:/, $spec);
4718 push @inputs, "$output.in"
4719 unless @inputs;
4721 return ($output, @inputs);
4722 }
4724 # $input
4725 # locate_am (@POSSIBLE_SOURCES)
4726 # -----------------------------
4727 # AC_CONFIG_FILES allow specifications such as Makefile:top.in:mid.in:bot.in
4728 # This functions returns the first *.in file for which a *.am exists.
4729 # It returns undef otherwise.
4730 sub locate_am (@)
4731 {
4732 my (@rest) = @_;
4733 my $input;
4734 foreach my $file (@rest)
4735 {
4736 if (($file =~ /^(.*)\.in$/) && -f "$1.am")
4737 {
4738 $input = $file;
4739 last;
4740 }
4741 }
4742 return $input;
4743 }
4745 my %make_list;
4747 # &scan_autoconf_config_files ($WHERE, $CONFIG-FILES)
4748 # ---------------------------------------------------
4749 # Study $CONFIG-FILES which is the first argument to AC_CONFIG_FILES
4750 # (or AC_OUTPUT).
4751 sub scan_autoconf_config_files ($$)
4752 {
4753 my ($where, $config_files) = @_;
4755 # Look at potential Makefile.am's.
4756 foreach (split ' ', $config_files)
4757 {
4758 # Must skip empty string for Perl 4.
4759 next if $_ eq "\\" || $_ eq '';
4761 # Handle $local:$input syntax.
4762 my ($local, @rest) = split (/:/);
4763 @rest = ("$local.in",) unless @rest;
4764 my $input = locate_am @rest;
4765 if ($input)
4766 {
4767 # We have a file that automake should generate.
4768 $make_list{$input} = join (':', ($local, @rest));
4769 }
4770 else
4771 {
4772 # We have a file that automake should cause to be
4773 # rebuilt, but shouldn't generate itself.
4774 push (@other_input_files, $_);
4775 }
4776 $ac_config_files_location{$local} = $where;
4777 }
4778 }
4781 # &scan_autoconf_traces ($FILENAME)
4782 # ---------------------------------
4783 sub scan_autoconf_traces ($)
4784 {
4785 my ($filename) = @_;
4787 # Macros to trace, with their minimal number of arguments.
4788 #
4789 # IMPORTANT: If you add a macro here, you should also add this macro
4790 # ========= to Automake-preselection in autoconf/lib/autom4te.in.
4791 my %traced = (
4792 AC_CANONICAL_BUILD => 0,
4793 AC_CANONICAL_HOST => 0,
4794 AC_CANONICAL_TARGET => 0,
4795 AC_CONFIG_AUX_DIR => 1,
4796 AC_CONFIG_FILES => 1,
4797 AC_CONFIG_HEADERS => 1,
4798 AC_CONFIG_LIBOBJ_DIR => 1,
4799 AC_CONFIG_LINKS => 1,
4800 AC_INIT => 0,
4801 AC_LIBSOURCE => 1,
4802 AC_REQUIRE_AUX_FILE => 1,
4803 AC_SUBST_TRACE => 1,
4804 AM_AUTOMAKE_VERSION => 1,
4805 AM_CONDITIONAL => 2,
4806 AM_ENABLE_MULTILIB => 0,
4807 AM_GNU_GETTEXT => 0,
4808 AM_INIT_AUTOMAKE => 0,
4809 AM_MAINTAINER_MODE => 0,
4810 AM_PROG_CC_C_O => 0,
4811 LT_SUPPORTED_TAG => 1,
4812 _LT_AC_TAGCONFIG => 0,
4813 m4_include => 1,
4814 m4_sinclude => 1,
4815 sinclude => 1,
4816 );
4818 my $traces = ($ENV{AUTOCONF} || 'autoconf') . " ";
4820 # Use a separator unlikely to be used, not `:', the default, which
4821 # has a precise meaning for AC_CONFIG_FILES and so on.
4822 $traces .= join (' ',
4823 map { "--trace=$_" . ':\$f:\$l::\$n::\${::}%' }
4824 (keys %traced));
4826 my $tracefh = new Automake::XFile ("$traces $filename |");
4827 verb "reading $traces";
4829 while ($_ = $tracefh->getline)
4830 {
4831 chomp;
4832 my ($here, @args) = split (/::/);
4833 my $where = new Automake::Location $here;
4834 my $macro = $args[0];
4836 prog_error ("unrequested trace `$macro'")
4837 unless exists $traced{$macro};
4839 # Skip and diagnose malformed calls.
4840 if ($#args < $traced{$macro})
4841 {
4842 msg ('syntax', $where, "not enough arguments for $macro");
4843 next;
4844 }
4846 # Alphabetical ordering please.
4847 if ($macro eq 'AC_CANONICAL_BUILD')
4848 {
4849 if ($seen_canonical <= AC_CANONICAL_BUILD)
4850 {
4851 $seen_canonical = AC_CANONICAL_BUILD;
4852 $canonical_location = $where;
4853 }
4854 }
4855 elsif ($macro eq 'AC_CANONICAL_HOST')
4856 {
4857 if ($seen_canonical <= AC_CANONICAL_HOST)
4858 {
4859 $seen_canonical = AC_CANONICAL_HOST;
4860 $canonical_location = $where;
4861 }
4862 }
4863 elsif ($macro eq 'AC_CANONICAL_TARGET')
4864 {
4865 $seen_canonical = AC_CANONICAL_TARGET;
4866 $canonical_location = $where;
4867 }
4868 elsif ($macro eq 'AC_CONFIG_AUX_DIR')
4869 {
4870 if ($seen_init_automake)
4871 {
4872 error ($where, "AC_CONFIG_AUX_DIR must be called before "
4873 . "AM_INIT_AUTOMAKE...", partial => 1);
4874 error ($seen_init_automake, "... AM_INIT_AUTOMAKE called here");
4875 }
4876 $config_aux_dir = $args[1];
4877 $config_aux_dir_set_in_configure_ac = 1;
4878 $relative_dir = '.';
4879 check_directory ($config_aux_dir, $where);
4880 }
4881 elsif ($macro eq 'AC_CONFIG_FILES')
4882 {
4883 # Look at potential Makefile.am's.
4884 scan_autoconf_config_files ($where, $args[1]);
4885 }
4886 elsif ($macro eq 'AC_CONFIG_HEADERS')
4887 {
4888 foreach my $spec (split (' ', $args[1]))
4889 {
4890 my ($dest, @src) = split (':', $spec);
4891 $ac_config_files_location{$dest} = $where;
4892 push @config_headers, $spec;
4893 }
4894 }
4895 elsif ($macro eq 'AC_CONFIG_LIBOBJ_DIR')
4896 {
4897 $config_libobj_dir = $args[1];
4898 $relative_dir = '.';
4899 check_directory ($config_libobj_dir, $where);
4900 }
4901 elsif ($macro eq 'AC_CONFIG_LINKS')
4902 {
4903 foreach my $spec (split (' ', $args[1]))
4904 {
4905 my ($dest, $src) = split (':', $spec);
4906 $ac_config_files_location{$dest} = $where;
4907 push @config_links, $spec;
4908 }
4909 }
4910 elsif ($macro eq 'AC_INIT')
4911 {
4912 if (defined $args[2])
4913 {
4914 $package_version = $args[2];
4915 $package_version_location = $where;
4916 }
4917 }
4918 elsif ($macro eq 'AC_LIBSOURCE')
4919 {
4920 $libsources{$args[1]} = $here;
4921 }
4922 elsif ($macro eq 'AC_SUBST_TRACE')
4923 {
4924 # Just check for alphanumeric in AC_SUBST_TRACE. If you do
4925 # AC_SUBST(5), then too bad.
4926 $configure_vars{$args[1]} = $where
4927 if $args[1] =~ /^\w+$/;
4928 }
4929 elsif ($macro eq 'AM_AUTOMAKE_VERSION')
4930 {
4931 error ($where,
4932 "version mismatch. This is Automake $VERSION,\n" .
4933 "but the definition used by this AM_INIT_AUTOMAKE\n" .
4934 "comes from Automake $args[1]. You should recreate\n" .
4935 "aclocal.m4 with aclocal and run automake again.\n",
4936 # $? = 63 is used to indicate version mismatch to missing.
4937 exit_code => 63)
4938 if $VERSION ne $args[1];
4940 $seen_automake_version = 1;
4941 }
4942 elsif ($macro eq 'AM_CONDITIONAL')
4943 {
4944 $configure_cond{$args[1]} = $where;
4945 }
4946 elsif ($macro eq 'AM_ENABLE_MULTILIB')
4947 {
4948 $seen_multilib = $where;
4949 }
4950 elsif ($macro eq 'AM_GNU_GETTEXT')
4951 {
4952 $seen_gettext = $where;
4953 $ac_gettext_location = $where;
4954 $seen_gettext_external = grep ($_ eq 'external', @args);
4955 }
4956 elsif ($macro eq 'AM_INIT_AUTOMAKE')
4957 {
4958 $seen_init_automake = $where;
4959 if (defined $args[2])
4960 {
4961 $package_version = $args[2];
4962 $package_version_location = $where;
4963 }
4964 elsif (defined $args[1])
4965 {
4966 exit $exit_code
4967 if (process_global_option_list ($where,
4968 split (' ', $args[1])));
4969 }
4970 }
4971 elsif ($macro eq 'AM_MAINTAINER_MODE')
4972 {
4973 $seen_maint_mode = $where;
4974 }
4975 elsif ($macro eq 'AM_PROG_CC_C_O')
4976 {
4977 $seen_cc_c_o = $where;
4978 }
4979 elsif ($macro eq 'AC_REQUIRE_AUX_FILE')
4980 {
4981 # Only remember the first time a file is required.
4982 $required_aux_file{$args[1]} = $where
4983 unless exists $required_aux_file{$args[1]};
4984 }
4985 elsif ($macro eq 'm4_include'
4986 || $macro eq 'm4_sinclude'
4987 || $macro eq 'sinclude')
4988 {
4989 # Skip missing `sinclude'd files.
4990 next if $macro ne 'm4_include' && ! -f $args[1];
4992 # Some modified versions of Autoconf don't use
4993 # forzen files. Consequently it's possible that we see all
4994 # m4_include's performed during Autoconf's startup.
4995 # Obviously we don't want to distribute Autoconf's files
4996 # so we skip absolute filenames here.
4997 push @configure_deps, '$(top_srcdir)/' . $args[1]
4998 unless $here =~ m,^(?:\w:)?[\\/],;
4999 # Keep track of the greatest timestamp.
5000 if (-e $args[1])
5001 {
5002 my $mtime = mtime $args[1];
5003 $configure_deps_greatest_timestamp = $mtime
5004 if $mtime > $configure_deps_greatest_timestamp;
5005 }
5006 }
5007 elsif ($macro eq 'LT_SUPPORTED_TAG')
5008 {
5009 $libtool_tags{$args[1]} = 1;
5010 $libtool_new_api = 1;
5011 }
5012 elsif ($macro eq '_LT_AC_TAGCONFIG')
5013 {
5014 # _LT_AC_TAGCONFIG is an old macro present in Libtool 1.5.
5015 # We use it to detect whether tags are supported. Our
5016 # prefered interface is LT_SUPPORTED_TAG, but it was
5017 # introduced in Libtool 1.6.
5018 if (0 == keys %libtool_tags)
5019 {
5020 # Hardcode the tags supported by Libtool 1.5.
5021 %libtool_tags = (CC => 1, CXX => 1, GCJ => 1, F77 => 1);
5022 }
5023 }
5024 }
5026 $tracefh->close;
5027 }
5030 # &scan_autoconf_files ()
5031 # -----------------------
5032 # Check whether we use `configure.ac' or `configure.in'.
5033 # Scan it (and possibly `aclocal.m4') for interesting things.
5034 # We must scan aclocal.m4 because there might be AC_SUBSTs and such there.
5035 sub scan_autoconf_files ()
5036 {
5037 # Reinitialize libsources here. This isn't really necessary,
5038 # since we currently assume there is only one configure.ac. But
5039 # that won't always be the case.
5040 %libsources = ();
5042 # Keep track of the youngest configure dependency.
5043 $configure_deps_greatest_timestamp = mtime $configure_ac;
5044 if (-e 'aclocal.m4')
5045 {
5046 my $mtime = mtime 'aclocal.m4';
5047 $configure_deps_greatest_timestamp = $mtime
5048 if $mtime > $configure_deps_greatest_timestamp;
5049 }
5051 scan_autoconf_traces ($configure_ac);
5053 @configure_input_files = sort keys %make_list;
5054 # Set input and output files if not specified by user.
5055 if (! @input_files)
5056 {
5057 @input_files = @configure_input_files;
5058 %output_files = %make_list;
5059 }
5062 if (! $seen_init_automake)
5063 {
5064 err_ac ("no proper invocation of AM_INIT_AUTOMAKE was found.\nYou "
5065 . "should verify that $configure_ac invokes AM_INIT_AUTOMAKE,"
5066 . "\nthat aclocal.m4 is present in the top-level directory,\n"
5067 . "and that aclocal.m4 was recently regenerated "
5068 . "(using aclocal).");
5069 }
5070 else
5071 {
5072 if (! $seen_automake_version)
5073 {
5074 if (-f 'aclocal.m4')
5075 {
5076 error ($seen_init_automake,
5077 "your implementation of AM_INIT_AUTOMAKE comes from " .
5078 "an\nold Automake version. You should recreate " .
5079 "aclocal.m4\nwith aclocal and run automake again.\n",
5080 # $? = 63 is used to indicate version mismatch to missing.
5081 exit_code => 63);
5082 }
5083 else
5084 {
5085 error ($seen_init_automake,
5086 "no proper implementation of AM_INIT_AUTOMAKE was " .
5087 "found,\nprobably because aclocal.m4 is missing...\n" .
5088 "You should run aclocal to create this file, then\n" .
5089 "run automake again.\n");
5090 }
5091 }
5092 }
5094 locate_aux_dir ();
5096 # Reorder @input_files so that the Makefile that distributes aux
5097 # files is processed last. This is important because each directory
5098 # can require auxiliary scripts and we should wait until they have
5099 # been installed before distributing them.
5101 # The Makefile.in that distribute the aux files is the one in
5102 # $config_aux_dir or the top-level Makefile.
5103 my $auxdirdist = is_make_dir ($config_aux_dir) ? $config_aux_dir : '.';
5104 my @new_input_files = ();
5105 while (@input_files)
5106 {
5107 my $in = pop @input_files;
5108 my @ins = split (/:/, $output_files{$in});
5109 if (dirname ($ins[0]) eq $auxdirdist)
5110 {
5111 push @new_input_files, $in;
5112 $automake_will_process_aux_dir = 1;
5113 }
5114 else
5115 {
5116 unshift @new_input_files, $in;
5117 }
5118 }
5119 @input_files = @new_input_files;
5121 # If neither the auxdir/Makefile nor the ./Makefile are generated
5122 # by Automake, we won't distribute the aux files anyway. Assume
5123 # the user know what (s)he does, and pretend we will distribute
5124 # them to disable the error in require_file_internal.
5125 $automake_will_process_aux_dir = 1 if ! is_make_dir ($auxdirdist);
5127 # Look for some files we need. Always check for these. This
5128 # check must be done for every run, even those where we are only
5129 # looking at a subdir Makefile. We must set relative_dir for
5130 # maybe_push_required_file to work.
5131 $relative_dir = '.';
5132 foreach my $file (keys %required_aux_file)
5133 {
5134 require_conf_file ($required_aux_file{$file}->get, FOREIGN, $file)
5135 }
5136 err_am "`install.sh' is an anachronism; use `install-sh' instead"
5137 if -f $config_aux_dir . '/install.sh';
5139 # Preserve dist_common for later.
5140 $configure_dist_common = variable_value ('DIST_COMMON') || '';
5142 }
5144 ################################################################
5146 # Set up for Cygnus mode.
5147 sub check_cygnus
5148 {
5149 my $cygnus = option 'cygnus';
5150 return unless $cygnus;
5152 set_strictness ('foreign');
5153 set_option ('no-installinfo', $cygnus);
5154 set_option ('no-dependencies', $cygnus);
5155 set_option ('no-dist', $cygnus);
5157 err_ac "`AM_MAINTAINER_MODE' required when --cygnus specified"
5158 if !$seen_maint_mode;
5159 }
5161 # Do any extra checking for GNU standards.
5162 sub check_gnu_standards
5163 {
5164 if ($relative_dir eq '.')
5165 {
5166 # In top level (or only) directory.
5167 require_file ("$am_file.am", GNU,
5168 qw/INSTALL NEWS README AUTHORS ChangeLog/);
5170 # Accept one of these three licenses; default to COPYING.
5171 # Make sure we do not overwrite an existing license.
5172 my $license;
5173 foreach (qw /COPYING COPYING.LIB COPYING.LESSER/)
5174 {
5175 if (-f $_)
5176 {
5177 $license = $_;
5178 last;
5179 }
5180 }
5181 require_file ("$am_file.am", GNU, 'COPYING')
5182 unless $license;
5183 }
5185 for my $opt ('no-installman', 'no-installinfo')
5186 {
5187 msg ('error-gnu', option $opt,
5188 "option `$opt' disallowed by GNU standards")
5189 if option $opt;
5190 }
5191 }
5193 # Do any extra checking for GNITS standards.
5194 sub check_gnits_standards
5195 {
5196 if ($relative_dir eq '.')
5197 {
5198 # In top level (or only) directory.
5199 require_file ("$am_file.am", GNITS, 'THANKS');
5200 }
5201 }
5203 ################################################################
5204 #
5205 # Functions to handle files of each language.
5207 # Each `lang_X_rewrite($DIRECTORY, $BASE, $EXT)' function follows a
5208 # simple formula: Return value is LANG_SUBDIR if the resulting object
5209 # file should be in a subdir if the source file is, LANG_PROCESS if
5210 # file is to be dealt with, LANG_IGNORE otherwise.
5212 # Much of the actual processing is handled in
5213 # handle_single_transform. These functions exist so that
5214 # auxiliary information can be recorded for a later cleanup pass.
5215 # Note that the calls to these functions are computed, so don't bother
5216 # searching for their precise names in the source.
5218 # This is just a convenience function that can be used to determine
5219 # when a subdir object should be used.
5220 sub lang_sub_obj
5221 {
5222 return option 'subdir-objects' ? LANG_SUBDIR : LANG_PROCESS;
5223 }
5225 # Rewrite a single C source file.
5226 sub lang_c_rewrite
5227 {
5228 my ($directory, $base, $ext, $nonansi_obj, $have_per_exec_flags, $var) = @_;
5230 if (option 'ansi2knr' && $base =~ /_$/)
5231 {
5232 # FIXME: include line number in error.
5233 err_am "C source file `$base.c' would be deleted by ansi2knr rules";
5234 }
5236 my $r = LANG_PROCESS;
5237 if (option 'subdir-objects')
5238 {
5239 $r = LANG_SUBDIR;
5240 if ($directory && $directory ne '.')
5241 {
5242 $base = $directory . '/' . $base;
5244 # libtool is always able to put the object at the proper place,
5245 # so we do not have to require AM_PROG_CC_C_O when building .lo files.
5246 msg_var ('portability', $var,
5247 "compiling `$base.c' in subdir requires "
5248 . "`AM_PROG_CC_C_O' in `$configure_ac'",
5249 uniq_scope => US_GLOBAL,
5250 uniq_part => 'AM_PROG_CC_C_O subdir')
5251 unless $seen_cc_c_o || $nonansi_obj eq '.lo';
5252 }
5254 # In this case we already have the directory information, so
5255 # don't add it again.
5256 $de_ansi_files{$base} = '';
5257 }
5258 else
5259 {
5260 $de_ansi_files{$base} = (($directory eq '.' || $directory eq '')
5261 ? ''
5262 : "$directory/");
5263 }
5265 if (! $seen_cc_c_o
5266 && $have_per_exec_flags
5267 && ! option 'subdir-objects'
5268 && $nonansi_obj ne '.lo')
5269 {
5270 msg_var ('portability',
5271 $var, "compiling `$base.c' with per-target flags requires "
5272 . "`AM_PROG_CC_C_O' in `$configure_ac'",
5273 uniq_scope => US_GLOBAL,
5274 uniq_part => 'AM_PROG_CC_C_O per-target')
5275 }
5277 return $r;
5278 }
5280 # Rewrite a single C++ source file.
5281 sub lang_cxx_rewrite
5282 {
5283 return &lang_sub_obj;
5284 }
5286 # Rewrite a single header file.
5287 sub lang_header_rewrite
5288 {
5289 # Header files are simply ignored.
5290 return LANG_IGNORE;
5291 }
5293 # Rewrite a single yacc file.
5294 sub lang_yacc_rewrite
5295 {
5296 my ($directory, $base, $ext) = @_;
5298 my $r = &lang_sub_obj;
5299 (my $newext = $ext) =~ tr/y/c/;
5300 return ($r, $newext);
5301 }
5303 # Rewrite a single yacc++ file.
5304 sub lang_yaccxx_rewrite
5305 {
5306 my ($directory, $base, $ext) = @_;
5308 my $r = &lang_sub_obj;
5309 (my $newext = $ext) =~ tr/y/c/;
5310 return ($r, $newext);
5311 }
5313 # Rewrite a single lex file.
5314 sub lang_lex_rewrite
5315 {
5316 my ($directory, $base, $ext) = @_;
5318 my $r = &lang_sub_obj;
5319 (my $newext = $ext) =~ tr/l/c/;
5320 return ($r, $newext);
5321 }
5323 # Rewrite a single lex++ file.
5324 sub lang_lexxx_rewrite
5325 {
5326 my ($directory, $base, $ext) = @_;
5328 my $r = &lang_sub_obj;
5329 (my $newext = $ext) =~ tr/l/c/;
5330 return ($r, $newext);
5331 }
5333 # Rewrite a single assembly file.
5334 sub lang_asm_rewrite
5335 {
5336 return &lang_sub_obj;
5337 }
5339 # Rewrite a single preprocessed assembly file.
5340 sub lang_cppasm_rewrite
5341 {
5342 return &lang_sub_obj;
5343 }
5345 # Rewrite a single Fortran 77 file.
5346 sub lang_f77_rewrite
5347 {
5348 return LANG_PROCESS;
5349 }
5351 # Rewrite a single Fortran file.
5352 sub lang_fc_rewrite
5353 {
5354 return LANG_PROCESS;
5355 }
5357 # Rewrite a single preprocessed Fortran file.
5358 sub lang_ppfc_rewrite
5359 {
5360 return LANG_PROCESS;
5361 }
5363 # Rewrite a single preprocessed Fortran 77 file.
5364 sub lang_ppf77_rewrite
5365 {
5366 return LANG_PROCESS;
5367 }
5369 # Rewrite a single ratfor file.
5370 sub lang_ratfor_rewrite
5371 {
5372 return LANG_PROCESS;
5373 }
5375 # Rewrite a single Objective C file.
5376 sub lang_objc_rewrite
5377 {
5378 return &lang_sub_obj;
5379 }
5381 # Rewrite a single Java file.
5382 sub lang_java_rewrite
5383 {
5384 return LANG_SUBDIR;
5385 }
5387 # The lang_X_finish functions are called after all source file
5388 # processing is done. Each should handle defining rules for the
5389 # language, etc. A finish function is only called if a source file of
5390 # the appropriate type has been seen.
5392 sub lang_c_finish
5393 {
5394 # Push all libobjs files onto de_ansi_files. We actually only
5395 # push files which exist in the current directory, and which are
5396 # genuine source files.
5397 foreach my $file (keys %libsources)
5398 {
5399 if ($file =~ /^(.*)\.[cly]$/ && -f "$relative_dir/$file")
5400 {
5401 $de_ansi_files{$1} = ''
5402 }
5403 }
5405 if (option 'ansi2knr' && keys %de_ansi_files)
5406 {
5407 # Make all _.c files depend on their corresponding .c files.
5408 my @objects;
5409 foreach my $base (sort keys %de_ansi_files)
5410 {
5411 # Each _.c file must depend on ansi2knr; otherwise it
5412 # might be used in a parallel build before it is built.
5413 # We need to support files in the srcdir and in the build
5414 # dir (because these files might be auto-generated. But
5415 # we can't use $< -- some makes only define $< during a
5416 # suffix rule.
5417 my $ansfile = $de_ansi_files{$base} . $base . '.c';
5418 $output_rules .= ($base . "_.c: $ansfile \$(ANSI2KNR)\n\t"
5419 . '$(CPP) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS) $(CPPFLAGS) '
5420 . '`if test -f $(srcdir)/' . $ansfile
5421 . '; then echo $(srcdir)/' . $ansfile
5422 . '; else echo ' . $ansfile . '; fi` '
5423 . "| sed 's/^# \\([0-9]\\)/#line \\1/' "
5424 . '| $(ANSI2KNR) > $@'
5425 # If ansi2knr fails then we shouldn't
5426 # create the _.c file
5427 . " || rm -f \$\@\n");
5428 push (@objects, $base . '_.$(OBJEXT)');
5429 push (@objects, $base . '_.lo')
5430 if var ('LIBTOOL');
5432 # Explicitly clean the _.c files if they are in a
5433 # subdirectory. (In the current directory they get erased
5434 # by a `rm -f *_.c' rule.)
5435 $clean_files{$base . '_.c'} = MOSTLY_CLEAN
5436 if dirname ($base) ne '.';
5437 }
5439 # Make all _.o (and _.lo) files depend on ansi2knr.
5440 # Use a sneaky little hack to make it print nicely.
5441 &pretty_print_rule ('', '', @objects, ':', '$(ANSI2KNR)');
5442 }
5443 }
5445 # This is a yacc helper which is called whenever we have decided to
5446 # compile a yacc file.
5447 sub lang_yacc_target_hook
5448 {
5449 my ($self, $aggregate, $output, $input, %transform) = @_;
5451 my $flag = $aggregate . "_YFLAGS";
5452 my $flagvar = var $flag;
5453 my $YFLAGSvar = var 'YFLAGS';
5454 if (($flagvar && $flagvar->variable_value =~ /$DASH_D_PATTERN/o)
5455 || ($YFLAGSvar && $YFLAGSvar->variable_value =~ /$DASH_D_PATTERN/o))
5456 {
5457 (my $output_base = $output) =~ s/$KNOWN_EXTENSIONS_PATTERN$//;
5458 my $header = $output_base . '.h';
5460 # Found a `-d' that applies to the compilation of this file.
5461 # Add a dependency for the generated header file, and arrange
5462 # for that file to be included in the distribution.
5463 foreach my $cond (Automake::Rule::define (${header}, 'internal',
5464 RULE_AUTOMAKE, TRUE,
5465 INTERNAL))
5466 {
5467 my $condstr = $cond->subst_string;
5468 $output_rules .=
5469 "$condstr${header}: $output\n"
5470 # Recover from removal of $header
5471 . "$condstr\t\@if test ! -f \$@; then \\\n"
5472 . "$condstr\t rm -f $output; \\\n"
5473 . "$condstr\t \$(MAKE) \$(AM_MAKEFLAGS) $output; \\\n"
5474 . "$condstr\telse :; fi\n";
5475 }
5476 # Distribute the generated file, unless its .y source was
5477 # listed in a nodist_ variable. (&handle_source_transform
5478 # will set DIST_SOURCE.)
5479 &push_dist_common ($header)
5480 if $transform{'DIST_SOURCE'};
5482 # If the files are built in the build directory, then we want
5483 # to remove them with `make clean'. If they are in srcdir
5484 # they shouldn't be touched. However, we can't determine this
5485 # statically, and the GNU rules say that yacc/lex output files
5486 # should be removed by maintainer-clean. So that's what we
5487 # do.
5488 $clean_files{$header} = MAINTAINER_CLEAN;
5489 }
5490 # Erase $OUTPUT on `make maintainer-clean' (by GNU standards).
5491 # See the comment above for $HEADER.
5492 $clean_files{$output} = MAINTAINER_CLEAN;
5493 }
5495 # This is a lex helper which is called whenever we have decided to
5496 # compile a lex file.
5497 sub lang_lex_target_hook
5498 {
5499 my ($self, $aggregate, $output, $input) = @_;
5500 # If the files are built in the build directory, then we want to
5501 # remove them with `make clean'. If they are in srcdir they
5502 # shouldn't be touched. However, we can't determine this
5503 # statically, and the GNU rules say that yacc/lex output files
5504 # should be removed by maintainer-clean. So that's what we do.
5505 $clean_files{$output} = MAINTAINER_CLEAN;
5506 }
5508 # This is a helper for both lex and yacc.
5509 sub yacc_lex_finish_helper
5510 {
5511 return if defined $language_scratch{'lex-yacc-done'};
5512 $language_scratch{'lex-yacc-done'} = 1;
5514 # If there is more than one distinct yacc (resp lex) source file
5515 # in a given directory, then the `ylwrap' program is required to
5516 # allow parallel builds to work correctly. FIXME: for now, no
5517 # line number.
5518 require_conf_file ($configure_ac, FOREIGN, 'ylwrap');
5519 &define_variable ('YLWRAP', "$am_config_aux_dir/ylwrap", INTERNAL);
5520 }
5522 sub lang_yacc_finish
5523 {
5524 return if defined $language_scratch{'yacc-done'};
5525 $language_scratch{'yacc-done'} = 1;
5527 reject_var 'YACCFLAGS', "`YACCFLAGS' obsolete; use `YFLAGS' instead";
5529 &yacc_lex_finish_helper
5530 if count_files_for_language ('yacc') > 1;
5531 }
5534 sub lang_lex_finish
5535 {
5536 return if defined $language_scratch{'lex-done'};
5537 $language_scratch{'lex-done'} = 1;
5539 &yacc_lex_finish_helper
5540 if count_files_for_language ('lex') > 1;
5541 }
5544 # Given a hash table of linker names, pick the name that has the most
5545 # precedence. This is lame, but something has to have global
5546 # knowledge in order to eliminate the conflict. Add more linkers as
5547 # required.
5548 sub resolve_linker
5549 {
5550 my (%linkers) = @_;
5552 foreach my $l (qw(GCJLINK CXXLINK F77LINK FCLINK OBJCLINK))
5553 {
5554 return $l if defined $linkers{$l};
5555 }
5556 return 'LINK';
5557 }
5559 # Called to indicate that an extension was used.
5560 sub saw_extension
5561 {
5562 my ($ext) = @_;
5563 if (! defined $extension_seen{$ext})
5564 {
5565 $extension_seen{$ext} = 1;
5566 }
5567 else
5568 {
5569 ++$extension_seen{$ext};
5570 }
5571 }
5573 # Return the number of files seen for a given language. Knows about
5574 # special cases we care about. FIXME: this is hideous. We need
5575 # something that involves real language objects. For instance yacc
5576 # and yaccxx could both derive from a common yacc class which would
5577 # know about the strange ylwrap requirement. (Or better yet we could
5578 # just not support legacy yacc!)
5579 sub count_files_for_language
5580 {
5581 my ($name) = @_;
5583 my @names;
5584 if ($name eq 'yacc' || $name eq 'yaccxx')
5585 {
5586 @names = ('yacc', 'yaccxx');
5587 }
5588 elsif ($name eq 'lex' || $name eq 'lexxx')
5589 {
5590 @names = ('lex', 'lexxx');
5591 }
5592 else
5593 {
5594 @names = ($name);
5595 }
5597 my $r = 0;
5598 foreach $name (@names)
5599 {
5600 my $lang = $languages{$name};
5601 foreach my $ext (@{$lang->extensions})
5602 {
5603 $r += $extension_seen{$ext}
5604 if defined $extension_seen{$ext};
5605 }
5606 }
5608 return $r
5609 }
5611 # Called to ask whether source files have been seen . If HEADERS is 1,
5612 # headers can be included.
5613 sub saw_sources_p
5614 {
5615 my ($headers) = @_;
5617 # count all the sources
5618 my $count = 0;
5619 foreach my $val (values %extension_seen)
5620 {
5621 $count += $val;
5622 }
5624 if (!$headers)
5625 {
5626 $count -= count_files_for_language ('header');
5627 }
5629 return $count > 0;
5630 }
5633 # register_language (%ATTRIBUTE)
5634 # ------------------------------
5635 # Register a single language.
5636 # Each %ATTRIBUTE is of the form ATTRIBUTE => VALUE.
5637 sub register_language (%)
5638 {
5639 my (%option) = @_;
5641 # Set the defaults.
5642 $option{'ansi'} = 0
5643 unless defined $option{'ansi'};
5644 $option{'autodep'} = 'no'
5645 unless defined $option{'autodep'};
5646 $option{'linker'} = ''
5647 unless defined $option{'linker'};
5648 $option{'flags'} = []
5649 unless defined $option{'flags'};
5650 $option{'output_extensions'} = sub { return ( '.$(OBJEXT)', '.lo' ) }
5651 unless defined $option{'output_extensions'};
5652 $option{'nodist_specific'} = 0
5653 unless defined $option{'nodist_specific'};
5655 my $lang = new Language (%option);
5657 # Fill indexes.
5658 $extension_map{$_} = $lang->name foreach @{$lang->extensions};
5659 $languages{$lang->name} = $lang;
5660 my $link = $lang->linker;
5661 if ($link)
5662 {
5663 if (exists $link_languages{$link})
5664 {
5665 prog_error ("`$link' has different definitions in "
5666 . $lang->name . " and " . $link_languages{$link}->name)
5667 if $lang->link ne $link_languages{$link}->link;
5668 }
5669 else
5670 {
5671 $link_languages{$link} = $lang;
5672 }
5673 }
5675 # Update the pattern of known extensions.
5676 accept_extensions (@{$lang->extensions});
5678 # Upate the $suffix_rule map.
5679 foreach my $suffix (@{$lang->extensions})
5680 {
5681 foreach my $dest (&{$lang->output_extensions} ($suffix))
5682 {
5683 register_suffix_rule (INTERNAL, $suffix, $dest);
5684 }
5685 }
5686 }
5688 # derive_suffix ($EXT, $OBJ)
5689 # --------------------------
5690 # This function is used to find a path from a user-specified suffix $EXT
5691 # to $OBJ or to some other suffix we recognize internally, e.g. `cc'.
5692 sub derive_suffix ($$)
5693 {
5694 my ($source_ext, $obj) = @_;
5696 while (! $extension_map{$source_ext}
5697 && $source_ext ne $obj
5698 && exists $suffix_rules->{$source_ext}
5699 && exists $suffix_rules->{$source_ext}{$obj})
5700 {
5701 $source_ext = $suffix_rules->{$source_ext}{$obj}[0];
5702 }
5704 return $source_ext;
5705 }
5708 ################################################################
5710 # Pretty-print something and append to output_rules.
5711 sub pretty_print_rule
5712 {
5713 $output_rules .= &makefile_wrap (@_);
5714 }
5717 ################################################################
5720 ## -------------------------------- ##
5721 ## Handling the conditional stack. ##
5722 ## -------------------------------- ##
5725 # $STRING
5726 # make_conditional_string ($NEGATE, $COND)
5727 # ----------------------------------------
5728 sub make_conditional_string ($$)
5729 {
5730 my ($negate, $cond) = @_;
5731 $cond = "${cond}_TRUE"
5732 unless $cond =~ /^TRUE|FALSE$/;
5733 $cond = Automake::Condition::conditional_negate ($cond)
5734 if $negate;
5735 return $cond;
5736 }
5739 # $COND
5740 # cond_stack_if ($NEGATE, $COND, $WHERE)
5741 # --------------------------------------
5742 sub cond_stack_if ($$$)
5743 {
5744 my ($negate, $cond, $where) = @_;
5746 error $where, "$cond does not appear in AM_CONDITIONAL"
5747 if ! $configure_cond{$cond} && $cond !~ /^TRUE|FALSE$/;
5749 push (@cond_stack, make_conditional_string ($negate, $cond));
5751 return new Automake::Condition (@cond_stack);
5752 }
5755 # $COND
5756 # cond_stack_else ($NEGATE, $COND, $WHERE)
5757 # ----------------------------------------
5758 sub cond_stack_else ($$$)
5759 {
5760 my ($negate, $cond, $where) = @_;
5762 if (! @cond_stack)
5763 {
5764 error $where, "else without if";
5765 return FALSE;
5766 }
5768 $cond_stack[$#cond_stack] =
5769 Automake::Condition::conditional_negate ($cond_stack[$#cond_stack]);
5771 # If $COND is given, check against it.
5772 if (defined $cond)
5773 {
5774 $cond = make_conditional_string ($negate, $cond);
5776 error ($where, "else reminder ($negate$cond) incompatible with "
5777 . "current conditional: $cond_stack[$#cond_stack]")
5778 if $cond_stack[$#cond_stack] ne $cond;
5779 }
5781 return new Automake::Condition (@cond_stack);
5782 }
5785 # $COND
5786 # cond_stack_endif ($NEGATE, $COND, $WHERE)
5787 # -----------------------------------------
5788 sub cond_stack_endif ($$$)
5789 {
5790 my ($negate, $cond, $where) = @_;
5791 my $old_cond;
5793 if (! @cond_stack)
5794 {
5795 error $where, "endif without if";
5796 return TRUE;
5797 }
5799 # If $COND is given, check against it.
5800 if (defined $cond)
5801 {
5802 $cond = make_conditional_string ($negate, $cond);
5804 error ($where, "endif reminder ($negate$cond) incompatible with "
5805 . "current conditional: $cond_stack[$#cond_stack]")
5806 if $cond_stack[$#cond_stack] ne $cond;
5807 }
5809 pop @cond_stack;
5811 return new Automake::Condition (@cond_stack);
5812 }
5818 ## ------------------------ ##
5819 ## Handling the variables. ##
5820 ## ------------------------ ##
5823 # &define_pretty_variable ($VAR, $COND, $WHERE, @VALUE)
5824 # -----------------------------------------------------
5825 # Like define_variable, but the value is a list, and the variable may
5826 # be defined conditionally. The second argument is the Condition
5827 # under which the value should be defined; this should be the empty
5828 # string to define the variable unconditionally. The third argument
5829 # is a list holding the values to use for the variable. The value is
5830 # pretty printed in the output file.
5831 sub define_pretty_variable ($$$@)
5832 {
5833 my ($var, $cond, $where, @value) = @_;
5835 if (! vardef ($var, $cond))
5836 {
5837 Automake::Variable::define ($var, VAR_AUTOMAKE, '', $cond, "@value",
5838 '', $where, VAR_PRETTY);
5839 rvar ($var)->rdef ($cond)->set_seen;
5840 }
5841 }
5844 # define_variable ($VAR, $VALUE, $WHERE)
5845 # --------------------------------------
5846 # Define a new Automake Makefile variable VAR to VALUE, but only if
5847 # not already defined.
5848 sub define_variable ($$$)
5849 {
5850 my ($var, $value, $where) = @_;
5851 define_pretty_variable ($var, TRUE, $where, $value);
5852 }
5855 # define_files_variable ($VAR, \@BASENAME, $EXTENSION, $WHERE)
5856 # -----------------------------------------------------------
5857 # Define the $VAR which content is the list of file names composed of
5858 # a @BASENAME and the $EXTENSION.
5859 sub define_files_variable ($\@$$)
5860 {
5861 my ($var, $basename, $extension, $where) = @_;
5862 define_variable ($var,
5863 join (' ', map { "$_.$extension" } @$basename),
5864 $where);
5865 }
5868 # Like define_variable, but define a variable to be the configure
5869 # substitution by the same name.
5870 sub define_configure_variable ($)
5871 {
5872 my ($var) = @_;
5874 my $pretty = VAR_ASIS;
5875 my $owner = VAR_CONFIGURE;
5877 # Do not output the ANSI2KNR configure variable -- we AC_SUBST
5878 # it in protos.m4, but later redefine it elsewhere. This is
5879 # pretty hacky. We also don't output AMDEPBACKSLASH: it might
5880 # be subst'd by `\', which certainly would not be appreciated by
5881 # Make.
5882 if ($var eq 'ANSI2KNR' || $var eq 'AMDEPBACKSLASH')
5883 {
5884 $pretty = VAR_SILENT;
5885 $owner = VAR_AUTOMAKE;
5886 }
5888 Automake::Variable::define ($var, $owner, '', TRUE, subst $var,
5889 '', $configure_vars{$var}, $pretty);
5890 }
5893 # define_compiler_variable ($LANG)
5894 # --------------------------------
5895 # Define a compiler variable. We also handle defining the `LT'
5896 # version of the command when using libtool.
5897 sub define_compiler_variable ($)
5898 {
5899 my ($lang) = @_;
5901 my ($var, $value) = ($lang->compiler, $lang->compile);
5902 my $libtool_tag = '';
5903 $libtool_tag = '--tag=' . $lang->libtool_tag . ' '
5904 if $lang->libtool_tag && exists $libtool_tags{$lang->libtool_tag};
5905 &define_variable ($var, $value, INTERNAL);
5906 &define_variable ("LT$var",
5907 "\$(LIBTOOL) $libtool_tag\$(AM_LIBTOOLFLAGS) "
5908 . "\$(LIBTOOLFLAGS) --mode=compile $value",
5909 INTERNAL)
5910 if var ('LIBTOOL');
5911 }
5914 # define_linker_variable ($LANG)
5915 # ------------------------------
5916 # Define linker variables.
5917 sub define_linker_variable ($)
5918 {
5919 my ($lang) = @_;
5921 my $libtool_tag = '';
5922 $libtool_tag = '--tag=' . $lang->libtool_tag . ' '
5923 if $lang->libtool_tag && exists $libtool_tags{$lang->libtool_tag};
5924 # CCLD = $(CC).
5925 &define_variable ($lang->lder, $lang->ld, INTERNAL);
5926 # CCLINK = $(CCLD) blah blah...
5927 &define_variable ($lang->linker,
5928 ((var ('LIBTOOL') ?
5929 "\$(LIBTOOL) $libtool_tag\$(AM_LIBTOOLFLAGS) "
5930 . "\$(LIBTOOLFLAGS) --mode=link " : '')
5931 . $lang->link),
5932 INTERNAL);
5933 }
5935 sub define_per_target_linker_variable ($$)
5936 {
5937 my ($linker, $target) = @_;
5939 # If the user wrote a custom link command, we don't define ours.
5940 return "${target}_LINK"
5941 if set_seen "${target}_LINK";
5943 my $xlink = $linker ? $linker : 'LINK';
5945 my $lang = $link_languages{$xlink};
5946 prog_error "Unknown language for linker variable `$xlink'"
5947 unless $lang;
5949 my $link_command = $lang->link;
5950 if (var 'LIBTOOL')
5951 {
5952 my $libtool_tag = '';
5953 $libtool_tag = '--tag=' . $lang->libtool_tag . ' '
5954 if $lang->libtool_tag && exists $libtool_tags{$lang->libtool_tag};
5956 $link_command =
5957 "\$(LIBTOOL) $libtool_tag\$(AM_LIBTOOLFLAGS) \$(LIBTOOLFLAGS) "
5958 . "--mode=link " . $link_command;
5959 }
5961 # Rewrite each occurrence of `AM_$flag' in the link
5962 # command into `${derived}_$flag' if it exists.
5963 my $orig_command = $link_command;
5964 my @flags = (@{$lang->flags}, 'LDFLAGS');
5965 push @flags, 'LIBTOOLFLAGS' if var 'LIBTOOL';
5966 for my $flag (@flags)
5967 {
5968 my $val = "${target}_$flag";
5969 $link_command =~ s/\(AM_$flag\)/\($val\)/
5970 if set_seen ($val);
5971 }
5973 # If the computed command is the same as the generic command, use
5974 # the command linker variable.
5975 return $lang->linker
5976 if $link_command eq $orig_command;
5978 &define_variable ("${target}_LINK", $link_command, INTERNAL);
5979 return "${target}_LINK";
5980 }
5982 ################################################################
5984 # &check_trailing_slash ($WHERE, $LINE)
5985 # --------------------------------------
5986 # Return 1 iff $LINE ends with a slash.
5987 # Might modify $LINE.
5988 sub check_trailing_slash ($\$)
5989 {
5990 my ($where, $line) = @_;
5992 # Ignore `##' lines.
5993 return 0 if $$line =~ /$IGNORE_PATTERN/o;
5995 # Catch and fix a common error.
5996 msg "syntax", $where, "whitespace following trailing backslash"
5997 if $$line =~ s/\\\s+\n$/\\\n/;
5999 return $$line =~ /\\$/;
6000 }
6003 # &read_am_file ($AMFILE, $WHERE)
6004 # -------------------------------
6005 # Read Makefile.am and set up %contents. Simultaneously copy lines
6006 # from Makefile.am into $output_trailer, or define variables as
6007 # appropriate. NOTE we put rules in the trailer section. We want
6008 # user rules to come after our generated stuff.
6009 sub read_am_file ($$)
6010 {
6011 my ($amfile, $where) = @_;
6013 my $am_file = new Automake::XFile ("< $amfile");
6014 verb "reading $amfile";
6016 # Keep track of the youngest output dependency.
6017 my $mtime = mtime $amfile;
6018 $output_deps_greatest_timestamp = $mtime
6019 if $mtime > $output_deps_greatest_timestamp;
6021 my $spacing = '';
6022 my $comment = '';
6023 my $blank = 0;
6024 my $saw_bk = 0;
6025 my $var_look = VAR_ASIS;
6027 use constant IN_VAR_DEF => 0;
6028 use constant IN_RULE_DEF => 1;
6029 use constant IN_COMMENT => 2;
6030 my $prev_state = IN_RULE_DEF;
6032 while ($_ = $am_file->getline)
6033 {
6034 $where->set ("$amfile:$.");
6035 if (/$IGNORE_PATTERN/o)
6036 {
6037 # Merely delete comments beginning with two hashes.
6038 }
6039 elsif (/$WHITE_PATTERN/o)
6040 {
6041 error $where, "blank line following trailing backslash"
6042 if $saw_bk;
6043 # Stick a single white line before the incoming macro or rule.
6044 $spacing = "\n";
6045 $blank = 1;
6046 # Flush all comments seen so far.
6047 if ($comment ne '')
6048 {
6049 $output_vars .= $comment;
6050 $comment = '';
6051 }
6052 }
6053 elsif (/$COMMENT_PATTERN/o)
6054 {
6055 # Stick comments before the incoming macro or rule. Make
6056 # sure a blank line precedes the first block of comments.
6057 $spacing = "\n" unless $blank;
6058 $blank = 1;
6059 $comment .= $spacing . $_;
6060 $spacing = '';
6061 $prev_state = IN_COMMENT;
6062 }
6063 else
6064 {
6065 last;
6066 }
6067 $saw_bk = check_trailing_slash ($where, $_);
6068 }
6070 # We save the conditional stack on entry, and then check to make
6071 # sure it is the same on exit. This lets us conditionally include
6072 # other files.
6073 my @saved_cond_stack = @cond_stack;
6074 my $cond = new Automake::Condition (@cond_stack);
6076 my $last_var_name = '';
6077 my $last_var_type = '';
6078 my $last_var_value = '';
6079 my $last_where;
6080 # FIXME: shouldn't use $_ in this loop; it is too big.
6081 while ($_)
6082 {
6083 $where->set ("$amfile:$.");
6085 # Make sure the line is \n-terminated.
6086 chomp;
6087 $_ .= "\n";
6089 # Don't look at MAINTAINER_MODE_TRUE here. That shouldn't be
6090 # used by users. @MAINT@ is an anachronism now.
6091 $_ =~ s/\@MAINT\@//g
6092 unless $seen_maint_mode;
6094 my $new_saw_bk = check_trailing_slash ($where, $_);
6096 if (/$IGNORE_PATTERN/o)
6097 {
6098 # Merely delete comments beginning with two hashes.
6100 # Keep any backslash from the previous line.
6101 $new_saw_bk = $saw_bk;
6102 }
6103 elsif (/$WHITE_PATTERN/o)
6104 {
6105 # Stick a single white line before the incoming macro or rule.
6106 $spacing = "\n";
6107 error $where, "blank line following trailing backslash"
6108 if $saw_bk;
6109 }
6110 elsif (/$COMMENT_PATTERN/o)
6111 {
6112 error $where, "comment following trailing backslash"
6113 if $saw_bk && $comment eq '';
6115 # Stick comments before the incoming macro or rule.
6116 $comment .= $spacing . $_;
6117 $spacing = '';
6118 $prev_state = IN_COMMENT;
6119 }
6120 elsif ($saw_bk)
6121 {
6122 if ($prev_state == IN_RULE_DEF)
6123 {
6124 my $cond = new Automake::Condition @cond_stack;
6125 $output_trailer .= $cond->subst_string;
6126 $output_trailer .= $_;
6127 }
6128 elsif ($prev_state == IN_COMMENT)
6129 {
6130 # If the line doesn't start with a `#', add it.
6131 # We do this because a continued comment like
6132 # # A = foo \
6133 # bar \
6134 # baz
6135 # is not portable. BSD make doesn't honor
6136 # escaped newlines in comments.
6137 s/^#?/#/;
6138 $comment .= $spacing . $_;
6139 }
6140 else # $prev_state == IN_VAR_DEF
6141 {
6142 $last_var_value .= ' '
6143 unless $last_var_value =~ /\s$/;
6144 $last_var_value .= $_;
6146 if (!/\\$/)
6147 {
6148 Automake::Variable::define ($last_var_name, VAR_MAKEFILE,
6149 $last_var_type, $cond,
6150 $last_var_value, $comment,
6151 $last_where, VAR_ASIS)
6152 if $cond != FALSE;
6153 $comment = $spacing = '';
6154 }
6155 }
6156 }
6158 elsif (/$IF_PATTERN/o)
6159 {
6160 $cond = cond_stack_if ($1, $2, $where);
6161 }
6162 elsif (/$ELSE_PATTERN/o)
6163 {
6164 $cond = cond_stack_else ($1, $2, $where);
6165 }
6166 elsif (/$ENDIF_PATTERN/o)
6167 {
6168 $cond = cond_stack_endif ($1, $2, $where);
6169 }
6171 elsif (/$RULE_PATTERN/o)
6172 {
6173 # Found a rule.
6174 $prev_state = IN_RULE_DEF;
6176 # For now we have to output all definitions of user rules
6177 # and can't diagnose duplicates (see the comment in
6178 # Automake::Rule::define). So we go on and ignore the return value.
6179 Automake::Rule::define ($1, $amfile, RULE_USER, $cond, $where);
6181 check_variable_expansions ($_, $where);
6183 $output_trailer .= $comment . $spacing;
6184 my $cond = new Automake::Condition @cond_stack;
6185 $output_trailer .= $cond->subst_string;
6186 $output_trailer .= $_;
6187 $comment = $spacing = '';
6188 }
6189 elsif (/$ASSIGNMENT_PATTERN/o)
6190 {
6191 # Found a macro definition.
6192 $prev_state = IN_VAR_DEF;
6193 $last_var_name = $1;
6194 $last_var_type = $2;
6195 $last_var_value = $3;
6196 $last_where = $where->clone;
6197 if ($3 ne '' && substr ($3, -1) eq "\\")
6198 {
6199 # We preserve the `\' because otherwise the long lines
6200 # that are generated will be truncated by broken
6201 # `sed's.
6202 $last_var_value = $3 . "\n";
6203 }
6204 # Normally we try to output variable definitions in the
6205 # same format they were input. However, POSIX compliant
6206 # systems are not required to support lines longer than
6207 # 2048 bytes (most notably, some sed implementation are
6208 # limited to 4000 bytes, and sed is used by config.status
6209 # to rewrite Makefile.in into Makefile). Moreover nobody
6210 # would really write such long lines by hand since it is
6211 # hardly maintainable. So if a line is longer that 1000
6212 # bytes (an arbitrary limit), assume it has been
6213 # automatically generated by some tools, and flatten the
6214 # variable definition. Otherwise, keep the variable as it
6215 # as been input.
6216 $var_look = VAR_PRETTY if length ($last_var_value) >= 1000;
6218 if (!/\\$/)
6219 {
6220 Automake::Variable::define ($last_var_name, VAR_MAKEFILE,
6221 $last_var_type, $cond,
6222 $last_var_value, $comment,
6223 $last_where, $var_look)
6224 if $cond != FALSE;
6225 $comment = $spacing = '';
6226 $var_look = VAR_ASIS;
6227 }
6228 }
6229 elsif (/$INCLUDE_PATTERN/o)
6230 {
6231 my $path = $1;
6233 if ($path =~ s/^\$\(top_srcdir\)\///)
6234 {
6235 push (@include_stack, "\$\(top_srcdir\)/$path");
6236 # Distribute any included file.
6238 # Always use the $(top_srcdir) prefix in DIST_COMMON,
6239 # otherwise OSF make will implicitly copy the included
6240 # file in the build tree during `make distdir' to satisfy
6241 # the dependency.
6242 # (subdircond2.test and subdircond3.test will fail.)
6243 push_dist_common ("\$\(top_srcdir\)/$path");
6244 }
6245 else
6246 {
6247 $path =~ s/\$\(srcdir\)\///;
6248 push (@include_stack, "\$\(srcdir\)/$path");
6249 # Always use the $(srcdir) prefix in DIST_COMMON,
6250 # otherwise OSF make will implicitly copy the included
6251 # file in the build tree during `make distdir' to satisfy
6252 # the dependency.
6253 # (subdircond2.test and subdircond3.test will fail.)
6254 push_dist_common ("\$\(srcdir\)/$path");
6255 $path = $relative_dir . "/" . $path if $relative_dir ne '.';
6256 }
6257 $where->push_context ("`$path' included from here");
6258 &read_am_file ($path, $where);
6259 $where->pop_context;
6260 }
6261 else
6262 {
6263 # This isn't an error; it is probably a continued rule.
6264 # In fact, this is what we assume.
6265 $prev_state = IN_RULE_DEF;
6266 check_variable_expansions ($_, $where);
6267 $output_trailer .= $comment . $spacing;
6268 my $cond = new Automake::Condition @cond_stack;
6269 $output_trailer .= $cond->subst_string;
6270 $output_trailer .= $_;
6271 $comment = $spacing = '';
6272 error $where, "`#' comment at start of rule is unportable"
6273 if $_ =~ /^\t\s*\#/;
6274 }
6276 $saw_bk = $new_saw_bk;
6277 $_ = $am_file->getline;
6278 }
6280 $output_trailer .= $comment;
6282 error ($where, "trailing backslash on last line")
6283 if $saw_bk;
6285 error ($where, (@cond_stack ? "unterminated conditionals: @cond_stack"
6286 : "too many conditionals closed in include file"))
6287 if "@saved_cond_stack" ne "@cond_stack";
6288 }
6291 # define_standard_variables ()
6292 # ----------------------------
6293 # A helper for read_main_am_file which initializes configure variables
6294 # and variables from header-vars.am.
6295 sub define_standard_variables
6296 {
6297 my $saved_output_vars = $output_vars;
6298 my ($comments, undef, $rules) =
6299 file_contents_internal (1, "$libdir/am/header-vars.am",
6300 new Automake::Location);
6302 foreach my $var (sort keys %configure_vars)
6303 {
6304 &define_configure_variable ($var);
6305 }
6307 $output_vars .= $comments . $rules;
6308 }
6310 # Read main am file.
6311 sub read_main_am_file
6312 {
6313 my ($amfile) = @_;
6315 # This supports the strange variable tricks we are about to play.
6316 prog_error (macros_dump () . "variable defined before read_main_am_file")
6317 if (scalar (variables) > 0);
6319 # Generate copyright header for generated Makefile.in.
6320 # We do discard the output of predefined variables, handled below.
6321 $output_vars = ("# $in_file_name generated by automake "
6322 . $VERSION . " from $am_file_name.\n");
6323 $output_vars .= '# ' . subst ('configure_input') . "\n";
6324 $output_vars .= $gen_copyright;
6326 # We want to predefine as many variables as possible. This lets
6327 # the user set them with `+=' in Makefile.am.
6328 &define_standard_variables;
6330 # Read user file, which might override some of our values.
6331 &read_am_file ($amfile, new Automake::Location);
6332 }
6336 ################################################################
6338 # $FLATTENED
6339 # &flatten ($STRING)
6340 # ------------------
6341 # Flatten the $STRING and return the result.
6342 sub flatten
6343 {
6344 $_ = shift;
6346 s/\\\n//somg;
6347 s/\s+/ /g;
6348 s/^ //;
6349 s/ $//;
6351 return $_;
6352 }
6354 # transform($TOKEN, \%PAIRS)
6355 # ==========================
6356 # If ($TOKEN, $VAL) is in %PAIRS:
6357 # - replaces %$TOKEN% with $VAL,
6358 # - enables/disables ?$TOKEN? and ?!$TOKEN?,
6359 # - replaces %?$TOKEN% with TRUE or FALSE.
6360 sub transform($$)
6361 {
6362 my ($token, $transform) = @_;
6364 if (substr ($token, 0, 1) eq '%')
6365 {
6366 my $cond = (substr ($token, 1, 1) eq '?') ? 1 : 0;
6367 $token = substr ($token, 1 + $cond, -1);
6368 my $val = $transform->{$token};
6369 prog_error "Unknown %token% `$token'" unless defined $val;
6370 if ($cond)
6371 {
6372 return $val ? 'TRUE' : 'FALSE';
6373 }
6374 else
6375 {
6376 return $val;
6377 }
6378 }
6379 # Now $token is '?xxx?' or '?!xxx?'.
6380 my $neg = (substr ($token, 1, 1) eq '!') ? 1 : 0;
6381 $token = substr ($token, 1 + $neg, -1);
6382 my $val = $transform->{$token};
6383 prog_error "Unknown ?token? `$token' (neg = $neg)" unless defined $val;
6384 return (!!$val == $neg) ? '##%' : '';
6385 }
6387 # @PARAGRAPHS
6388 # &make_paragraphs ($MAKEFILE, [%TRANSFORM])
6389 # ------------------------------------------
6390 # Load a $MAKEFILE, apply the %TRANSFORM, and return it as a list of
6391 # paragraphs.
6392 sub make_paragraphs ($%)
6393 {
6394 my ($file, %transform) = @_;
6396 # Complete %transform with global options.
6397 # Note that %transform goes last, so it overrides global options.
6398 %transform = ('CYGNUS' => !! option 'cygnus',
6399 'MAINTAINER-MODE'
6400 => $seen_maint_mode ? subst ('MAINTAINER_MODE_TRUE') : '',
6402 'BZIP2' => !! option 'dist-bzip2',
6403 'COMPRESS' => !! option 'dist-tarZ',
6404 'GZIP' => ! option 'no-dist-gzip',
6405 'SHAR' => !! option 'dist-shar',
6406 'ZIP' => !! option 'dist-zip',
6408 'INSTALL-INFO' => ! option 'no-installinfo',
6409 'INSTALL-MAN' => ! option 'no-installman',
6410 'CK-NEWS' => !! option 'check-news',
6412 'SUBDIRS' => !! var ('SUBDIRS'),
6413 'TOPDIR_P' => $relative_dir eq '.',
6415 'BUILD' => ($seen_canonical >= AC_CANONICAL_BUILD),
6416 'HOST' => ($seen_canonical >= AC_CANONICAL_HOST),
6417 'TARGET' => ($seen_canonical >= AC_CANONICAL_TARGET),
6419 'LIBTOOL' => !! var ('LIBTOOL'),
6420 'NONLIBTOOL' => 1,
6421 'FIRST' => ! $transformed_files{$file},
6422 %transform);
6424 $transformed_files{$file} = 1;
6425 $_ = $am_file_cache{$file};
6427 if (! defined $_)
6428 {
6429 verb "reading $file";
6430 # Swallow the whole file.
6431 my $fc_file = new Automake::XFile "< $file";
6432 my $saved_dollar_slash = $/;
6433 undef $/;
6434 $_ = $fc_file->getline;
6435 $/ = $saved_dollar_slash;
6436 $fc_file->close;
6438 # Remove ##-comments.
6439 # Besides we don't need more than two consecutive new-lines.
6440 s/(?:$IGNORE_PATTERN|(?<=\n\n)\n+)//gom;
6442 $am_file_cache{$file} = $_;
6443 }
6445 # Substitute Automake template tokens.
6446 s/(?:%\??[\w\-]+%|\?!?[\w\-]+\?)/transform($&, \%transform)/ge;
6447 # transform() may have added some ##%-comments to strip.
6448 # (we use `##%' instead of `##' so we can distinguish ##%##%##% from
6449 # ####### and do not remove the latter.)
6450 s/^[ \t]*(?:##%)+.*\n//gm;
6452 # Split at unescaped new lines.
6453 my @lines = split (/(?<!\\)\n/, $_);
6454 my @res;
6456 while (defined ($_ = shift @lines))
6457 {
6458 my $paragraph = $_;
6459 # If we are a rule, eat as long as we start with a tab.
6460 if (/$RULE_PATTERN/smo)
6461 {
6462 while (defined ($_ = shift @lines) && $_ =~ /^\t/)
6463 {
6464 $paragraph .= "\n$_";
6465 }
6466 unshift (@lines, $_);
6467 }
6469 # If we are a comments, eat as much comments as you can.
6470 elsif (/$COMMENT_PATTERN/smo)
6471 {
6472 while (defined ($_ = shift @lines)
6473 && $_ =~ /$COMMENT_PATTERN/smo)
6474 {
6475 $paragraph .= "\n$_";
6476 }
6477 unshift (@lines, $_);
6478 }
6480 push @res, $paragraph;
6481 }
6483 return @res;
6484 }
6488 # ($COMMENT, $VARIABLES, $RULES)
6489 # &file_contents_internal ($IS_AM, $FILE, $WHERE, [%TRANSFORM])
6490 # -------------------------------------------------------------
6491 # Return contents of a file from $libdir/am, automatically skipping
6492 # macros or rules which are already known. $IS_AM iff the caller is
6493 # reading an Automake file (as opposed to the user's Makefile.am).
6494 sub file_contents_internal ($$$%)
6495 {
6496 my ($is_am, $file, $where, %transform) = @_;
6498 $where->set ($file);
6500 my $result_vars = '';
6501 my $result_rules = '';
6502 my $comment = '';
6503 my $spacing = '';
6505 # The following flags are used to track rules spanning across
6506 # multiple paragraphs.
6507 my $is_rule = 0; # 1 if we are processing a rule.
6508 my $discard_rule = 0; # 1 if the current rule should not be output.
6510 # We save the conditional stack on entry, and then check to make
6511 # sure it is the same on exit. This lets us conditionally include
6512 # other files.
6513 my @saved_cond_stack = @cond_stack;
6514 my $cond = new Automake::Condition (@cond_stack);
6516 foreach (make_paragraphs ($file, %transform))
6517 {
6518 # FIXME: no line number available.
6519 $where->set ($file);
6521 # Sanity checks.
6522 error $where, "blank line following trailing backslash:\n$_"
6523 if /\\$/;
6524 error $where, "comment following trailing backslash:\n$_"
6525 if /\\#/;
6527 if (/^$/)
6528 {
6529 $is_rule = 0;
6530 # Stick empty line before the incoming macro or rule.
6531 $spacing = "\n";
6532 }
6533 elsif (/$COMMENT_PATTERN/mso)
6534 {
6535 $is_rule = 0;
6536 # Stick comments before the incoming macro or rule.
6537 $comment = "$_\n";
6538 }
6540 # Handle inclusion of other files.
6541 elsif (/$INCLUDE_PATTERN/o)
6542 {
6543 if ($cond != FALSE)
6544 {
6545 my $file = ($is_am ? "$libdir/am/" : '') . $1;
6546 $where->push_context ("`$file' included from here");
6547 # N-ary `.=' fails.
6548 my ($com, $vars, $rules)
6549 = file_contents_internal ($is_am, $file, $where, %transform);
6550 $where->pop_context;
6551 $comment .= $com;
6552 $result_vars .= $vars;
6553 $result_rules .= $rules;
6554 }
6555 }
6557 # Handling the conditionals.
6558 elsif (/$IF_PATTERN/o)
6559 {
6560 $cond = cond_stack_if ($1, $2, $file);
6561 }
6562 elsif (/$ELSE_PATTERN/o)
6563 {
6564 $cond = cond_stack_else ($1, $2, $file);
6565 }
6566 elsif (/$ENDIF_PATTERN/o)
6567 {
6568 $cond = cond_stack_endif ($1, $2, $file);
6569 }
6571 # Handling rules.
6572 elsif (/$RULE_PATTERN/mso)
6573 {
6574 $is_rule = 1;
6575 $discard_rule = 0;
6576 # Separate relationship from optional actions: the first
6577 # `new-line tab" not preceded by backslash (continuation
6578 # line).
6579 my $paragraph = $_;
6580 /^(.*?)(?:(?<!\\)\n(\t.*))?$/s;
6581 my ($relationship, $actions) = ($1, $2 || '');
6583 # Separate targets from dependencies: the first colon.
6584 $relationship =~ /^([^:]+\S+) *: *(.*)$/som;
6585 my ($targets, $dependencies) = ($1, $2);
6586 # Remove the escaped new lines.
6587 # I don't know why, but I have to use a tmp $flat_deps.
6588 my $flat_deps = &flatten ($dependencies);
6589 my @deps = split (' ', $flat_deps);
6591 foreach (split (' ' , $targets))
6592 {
6593 # FIXME: 1. We are not robust to people defining several targets
6594 # at once, only some of them being in %dependencies. The
6595 # actions from the targets in %dependencies are usually generated
6596 # from the content of %actions, but if some targets in $targets
6597 # are not in %dependencies the ELSE branch will output
6598 # a rule for all $targets (i.e. the targets which are both
6599 # in %dependencies and $targets will have two rules).
6601 # FIXME: 2. The logic here is not able to output a
6602 # multi-paragraph rule several time (e.g. for each condition
6603 # it is defined for) because it only knows the first paragraph.
6605 # FIXME: 3. We are not robust to people defining a subset
6606 # of a previously defined "multiple-target" rule. E.g.
6607 # `foo:' after `foo bar:'.
6609 # Output only if not in FALSE.
6610 if (defined $dependencies{$_} && $cond != FALSE)
6611 {
6612 &depend ($_, @deps);
6613 if ($actions{$_})
6614 {
6615 $actions{$_} .= "\n$actions" if $actions;
6616 }
6617 else
6618 {
6619 $actions{$_} = $actions;
6620 }
6621 }
6622 else
6623 {
6624 # Free-lance dependency. Output the rule for all the
6625 # targets instead of one by one.
6626 my @undefined_conds =
6627 Automake::Rule::define ($targets, $file,
6628 $is_am ? RULE_AUTOMAKE : RULE_USER,
6629 $cond, $where);
6630 for my $undefined_cond (@undefined_conds)
6631 {
6632 my $condparagraph = $paragraph;
6633 $condparagraph =~ s/^/$undefined_cond->subst_string/gme;
6634 $result_rules .= "$spacing$comment$condparagraph\n";
6635 }
6636 if (scalar @undefined_conds == 0)
6637 {
6638 # Remember to discard next paragraphs
6639 # if they belong to this rule.
6640 # (but see also FIXME: #2 above.)
6641 $discard_rule = 1;
6642 }
6643 $comment = $spacing = '';
6644 last;
6645 }
6646 }
6647 }
6649 elsif (/$ASSIGNMENT_PATTERN/mso)
6650 {
6651 my ($var, $type, $val) = ($1, $2, $3);
6652 error $where, "variable `$var' with trailing backslash"
6653 if /\\$/;
6655 $is_rule = 0;
6657 Automake::Variable::define ($var,
6658 $is_am ? VAR_AUTOMAKE : VAR_MAKEFILE,
6659 $type, $cond, $val, $comment, $where,
6660 VAR_ASIS)
6661 if $cond != FALSE;
6663 $comment = $spacing = '';
6664 }
6665 else
6666 {
6667 # This isn't an error; it is probably some tokens which
6668 # configure is supposed to replace, such as `@SET-MAKE@',
6669 # or some part of a rule cut by an if/endif.
6670 if (! $cond->false && ! ($is_rule && $discard_rule))
6671 {
6672 s/^/$cond->subst_string/gme;
6673 $result_rules .= "$spacing$comment$_\n";
6674 }
6675 $comment = $spacing = '';
6676 }
6677 }
6679 error ($where, @cond_stack ?
6680 "unterminated conditionals: @cond_stack" :
6681 "too many conditionals closed in include file")
6682 if "@saved_cond_stack" ne "@cond_stack";
6684 return ($comment, $result_vars, $result_rules);
6685 }
6688 # $CONTENTS
6689 # &file_contents ($BASENAME, $WHERE, [%TRANSFORM])
6690 # ------------------------------------------------
6691 # Return contents of a file from $libdir/am, automatically skipping
6692 # macros or rules which are already known.
6693 sub file_contents ($$%)
6694 {
6695 my ($basename, $where, %transform) = @_;
6696 my ($comments, $variables, $rules) =
6697 file_contents_internal (1, "$libdir/am/$basename.am", $where,
6698 %transform);
6699 return "$comments$variables$rules";
6700 }
6703 # @PREFIX
6704 # &am_primary_prefixes ($PRIMARY, $CAN_DIST, @PREFIXES)
6705 # -----------------------------------------------------
6706 # Find all variable prefixes that are used for install directories. A
6707 # prefix `zar' qualifies iff:
6708 #
6709 # * `zardir' is a variable.
6710 # * `zar_PRIMARY' is a variable.
6711 #
6712 # As a side effect, it looks for misspellings. It is an error to have
6713 # a variable ending in a "reserved" suffix whose prefix is unknown, e.g.
6714 # "bin_PROGRAMS". However, unusual prefixes are allowed if a variable
6715 # of the same name (with "dir" appended) exists. For instance, if the
6716 # variable "zardir" is defined, then "zar_PROGRAMS" becomes valid.
6717 # This is to provide a little extra flexibility in those cases which
6718 # need it.
6719 sub am_primary_prefixes ($$@)
6720 {
6721 my ($primary, $can_dist, @prefixes) = @_;
6723 local $_;
6724 my %valid = map { $_ => 0 } @prefixes;
6725 $valid{'EXTRA'} = 0;
6726 foreach my $var (variables $primary)
6727 {
6728 # Automake is allowed to define variables that look like primaries
6729 # but which aren't. E.g. INSTALL_sh_DATA.
6730 # Autoconf can also define variables like INSTALL_DATA, so
6731 # ignore all configure variables (at least those which are not
6732 # redefined in Makefile.am).
6733 # FIXME: We should make sure that these variables are not
6734 # conditionally defined (or else adjust the condition below).
6735 my $def = $var->def (TRUE);
6736 next if $def && $def->owner != VAR_MAKEFILE;
6738 my $varname = $var->name;
6740 if ($varname =~ /^(nobase_)?(dist_|nodist_)?(.*)_[[:alnum:]]+$/)
6741 {
6742 my ($base, $dist, $X) = ($1 || '', $2 || '', $3 || '');
6743 if ($dist ne '' && ! $can_dist)
6744 {
6745 err_var ($var,
6746 "invalid variable `$varname': `dist' is forbidden");
6747 }
6748 # Standard directories must be explicitly allowed.
6749 elsif (! defined $valid{$X} && exists $standard_prefix{$X})
6750 {
6751 err_var ($var,
6752 "`${X}dir' is not a legitimate directory " .
6753 "for `$primary'");
6754 }
6755 # A not explicitly valid directory is allowed if Xdir is defined.
6756 elsif (! defined $valid{$X} &&
6757 $var->requires_variables ("`$varname' is used", "${X}dir"))
6758 {
6759 # Nothing to do. Any error message has been output
6760 # by $var->requires_variables.
6761 }
6762 else
6763 {
6764 # Ensure all extended prefixes are actually used.
6765 $valid{"$base$dist$X"} = 1;
6766 }
6767 }
6768 else
6769 {
6770 prog_error "unexpected variable name: $varname";
6771 }
6772 }
6774 # Return only those which are actually defined.
6775 return sort grep { var ($_ . '_' . $primary) } keys %valid;
6776 }
6779 # Handle `where_HOW' variable magic. Does all lookups, generates
6780 # install code, and possibly generates code to define the primary
6781 # variable. The first argument is the name of the .am file to munge,
6782 # the second argument is the primary variable (e.g. HEADERS), and all
6783 # subsequent arguments are possible installation locations.
6784 #
6785 # Returns list of [$location, $value] pairs, where
6786 # $value's are the values in all where_HOW variable, and $location
6787 # there associated location (the place here their parent variables were
6788 # defined).
6789 #
6790 # FIXME: this should be rewritten to be cleaner. It should be broken
6791 # up into multiple functions.
6792 #
6793 # Usage is: am_install_var (OPTION..., file, HOW, where...)
6794 sub am_install_var
6795 {
6796 my (@args) = @_;
6798 my $do_require = 1;
6799 my $can_dist = 0;
6800 my $default_dist = 0;
6801 while (@args)
6802 {
6803 if ($args[0] eq '-noextra')
6804 {
6805 $do_require = 0;
6806 }
6807 elsif ($args[0] eq '-candist')
6808 {
6809 $can_dist = 1;
6810 }
6811 elsif ($args[0] eq '-defaultdist')
6812 {
6813 $default_dist = 1;
6814 $can_dist = 1;
6815 }
6816 elsif ($args[0] !~ /^-/)
6817 {
6818 last;
6819 }
6820 shift (@args);
6821 }
6823 my ($file, $primary, @prefix) = @args;
6825 # Now that configure substitutions are allowed in where_HOW
6826 # variables, it is an error to actually define the primary. We
6827 # allow `JAVA', as it is customarily used to mean the Java
6828 # interpreter. This is but one of several Java hacks. Similarly,
6829 # `PYTHON' is customarily used to mean the Python interpreter.
6830 reject_var $primary, "`$primary' is an anachronism"
6831 unless $primary eq 'JAVA' || $primary eq 'PYTHON';
6833 # Get the prefixes which are valid and actually used.
6834 @prefix = am_primary_prefixes ($primary, $can_dist, @prefix);
6836 # If a primary includes a configure substitution, then the EXTRA_
6837 # form is required. Otherwise we can't properly do our job.
6838 my $require_extra;
6840 my @used = ();
6841 my @result = ();
6843 foreach my $X (@prefix)
6844 {
6845 my $nodir_name = $X;
6846 my $one_name = $X . '_' . $primary;
6847 my $one_var = var $one_name;
6849 my $strip_subdir = 1;
6850 # If subdir prefix should be preserved, do so.
6851 if ($nodir_name =~ /^nobase_/)
6852 {
6853 $strip_subdir = 0;
6854 $nodir_name =~ s/^nobase_//;
6855 }
6857 # If files should be distributed, do so.
6858 my $dist_p = 0;
6859 if ($can_dist)
6860 {
6861 $dist_p = (($default_dist && $nodir_name !~ /^nodist_/)
6862 || (! $default_dist && $nodir_name =~ /^dist_/));
6863 $nodir_name =~ s/^(dist|nodist)_//;
6864 }
6867 # Use the location of the currently processed variable.
6868 # We are not processing a particular condition, so pick the first
6869 # available.
6870 my $tmpcond = $one_var->conditions->one_cond;
6871 my $where = $one_var->rdef ($tmpcond)->location->clone;
6873 # Append actual contents of where_PRIMARY variable to
6874 # @result, skipping @substitutions@.
6875 foreach my $locvals ($one_var->value_as_list_recursive (location => 1))
6876 {
6877 my ($loc, $value) = @$locvals;
6878 # Skip configure substitutions.
6879 if ($value =~ /^\@.*\@$/)
6880 {
6881 if ($nodir_name eq 'EXTRA')
6882 {
6883 error ($where,
6884 "`$one_name' contains configure substitution, "
6885 . "but shouldn't");
6886 }
6887 # Check here to make sure variables defined in
6888 # configure.ac do not imply that EXTRA_PRIMARY
6889 # must be defined.
6890 elsif (! defined $configure_vars{$one_name})
6891 {
6892 $require_extra = $one_name
6893 if $do_require;
6894 }
6895 }
6896 else
6897 {
6898 push (@result, $locvals);
6899 }
6900 }
6901 # A blatant hack: we rewrite each _PROGRAMS primary to include
6902 # EXEEXT.
6903 append_exeext { 1 } $one_name
6904 if $primary eq 'PROGRAMS';
6905 # "EXTRA" shouldn't be used when generating clean targets,
6906 # all, or install targets. We used to warn if EXTRA_FOO was
6907 # defined uselessly, but this was annoying.
6908 next
6909 if $nodir_name eq 'EXTRA';
6911 if ($nodir_name eq 'check')
6912 {
6913 push (@check, '$(' . $one_name . ')');
6914 }
6915 else
6916 {
6917 push (@used, '$(' . $one_name . ')');
6918 }
6920 # Is this to be installed?
6921 my $install_p = $nodir_name ne 'noinst' && $nodir_name ne 'check';
6923 # If so, with install-exec? (or install-data?).
6924 my $exec_p = ($nodir_name =~ /$EXEC_DIR_PATTERN/o);
6926 my $check_options_p = $install_p && !! option 'std-options';
6928 # Use the location of the currently processed variable as context.
6929 $where->push_context ("while processing `$one_name'");
6931 # The variable containing all file to distribute.
6932 my $distvar = "\$($one_name)";
6933 $distvar = shadow_unconditionally ($one_name, $where)
6934 if ($dist_p && $one_var->has_conditional_contents);
6936 # Singular form of $PRIMARY.
6937 (my $one_primary = $primary) =~ s/S$//;
6938 $output_rules .= &file_contents ($file, $where,
6939 PRIMARY => $primary,
6940 ONE_PRIMARY => $one_primary,
6941 DIR => $X,
6942 NDIR => $nodir_name,
6943 BASE => $strip_subdir,
6945 EXEC => $exec_p,
6946 INSTALL => $install_p,
6947 DIST => $dist_p,
6948 DISTVAR => $distvar,
6949 'CK-OPTS' => $check_options_p);
6950 }
6952 # The JAVA variable is used as the name of the Java interpreter.
6953 # The PYTHON variable is used as the name of the Python interpreter.
6954 if (@used && $primary ne 'JAVA' && $primary ne 'PYTHON')
6955 {
6956 # Define it.
6957 define_pretty_variable ($primary, TRUE, INTERNAL, @used);
6958 $output_vars .= "\n";
6959 }
6961 err_var ($require_extra,
6962 "`$require_extra' contains configure substitution,\n"
6963 . "but `EXTRA_$primary' not defined")
6964 if ($require_extra && ! var ('EXTRA_' . $primary));
6966 # Push here because PRIMARY might be configure time determined.
6967 push (@all, '$(' . $primary . ')')
6968 if @used && $primary ne 'JAVA' && $primary ne 'PYTHON';
6970 # Make the result unique. This lets the user use conditionals in
6971 # a natural way, but still lets us program lazily -- we don't have
6972 # to worry about handling a particular object more than once.
6973 # We will keep only one location per object.
6974 my %result = ();
6975 for my $pair (@result)
6976 {
6977 my ($loc, $val) = @$pair;
6978 $result{$val} = $loc;
6979 }
6980 my @l = sort keys %result;
6981 return map { [$result{$_}->clone, $_] } @l;
6982 }
6985 ################################################################
6987 # Each key in this hash is the name of a directory holding a
6988 # Makefile.in. These variables are local to `is_make_dir'.
6989 my %make_dirs = ();
6990 my $make_dirs_set = 0;
6992 sub is_make_dir
6993 {
6994 my ($dir) = @_;
6995 if (! $make_dirs_set)
6996 {
6997 foreach my $iter (@configure_input_files)
6998 {
6999 $make_dirs{dirname ($iter)} = 1;
7000 }
7001 # We also want to notice Makefile.in's.
7002 foreach my $iter (@other_input_files)
7003 {
7004 if ($iter =~ /Makefile\.in$/)
7005 {
7006 $make_dirs{dirname ($iter)} = 1;
7007 }
7008 }
7009 $make_dirs_set = 1;
7010 }
7011 return defined $make_dirs{$dir};
7012 }
7014 ################################################################
7016 # Find the aux dir. This should match the algorithm used by
7017 # ./configure. (See the Autoconf documentation for for
7018 # AC_CONFIG_AUX_DIR.)
7019 sub locate_aux_dir ()
7020 {
7021 if (! $config_aux_dir_set_in_configure_ac)
7022 {
7023 # The default auxiliary directory is the first
7024 # of ., .., or ../.. that contains install-sh.
7025 # Assume . if install-sh doesn't exist yet.
7026 for my $dir (qw (. .. ../..))
7027 {
7028 if (-f "$dir/install-sh")
7029 {
7030 $config_aux_dir = $dir;
7031 last;
7032 }
7033 }
7034 $config_aux_dir = '.' unless $config_aux_dir;
7035 }
7036 # Avoid unsightly '/.'s.
7037 $am_config_aux_dir =
7038 '$(top_srcdir)' . ($config_aux_dir eq '.' ? "" : "/$config_aux_dir");
7039 $am_config_aux_dir =~ s,/*$,,;
7040 }
7043 # &maybe_push_required_file ($DIR, $FILE, $FULLFILE)
7044 # --------------------------------------------------
7045 # See if we want to push this file onto dist_common. This function
7046 # encodes the rules for deciding when to do so.
7047 sub maybe_push_required_file
7048 {
7049 my ($dir, $file, $fullfile) = @_;
7051 if ($dir eq $relative_dir)
7052 {
7053 push_dist_common ($file);
7054 return 1;
7055 }
7056 elsif ($relative_dir eq '.' && ! &is_make_dir ($dir))
7057 {
7058 # If we are doing the topmost directory, and the file is in a
7059 # subdir which does not have a Makefile, then we distribute it
7060 # here.
7062 # If a required file is above the source tree, it is important
7063 # to prefix it with `$(srcdir)' so that no VPATH search is
7064 # performed. Otherwise problems occur with Make implementations
7065 # that rewrite and simplify rules whose dependencies are found in a
7066 # VPATH location. Here is an example with OSF1/Tru64 Make.
7067 #
7068 # % cat Makefile
7069 # VPATH = sub
7070 # distdir: ../a
7071 # echo ../a
7072 # % ls
7073 # Makefile a
7074 # % make
7075 # echo a
7076 # a
7077 #
7078 # Dependency `../a' was found in `sub/../a', but this make
7079 # implementation simplified it as `a'. (Note that the sub/
7080 # directory does not even exist.)
7081 #
7082 # This kind of VPATH rewriting seems hard to cancel. The
7083 # distdir.am hack against VPATH rewriting works only when no
7084 # simplification is done, i.e., for dependencies which are in
7085 # subdirectories, not in enclosing directories. Hence, in
7086 # the latter case we use a full path to make sure no VPATH
7087 # search occurs.
7088 $fullfile = '$(srcdir)/' . $fullfile
7089 if $dir =~ m,^\.\.(?:$|/),;
7091 push_dist_common ($fullfile);
7092 return 1;
7093 }
7094 return 0;
7095 }
7098 # If a file name appears as a key in this hash, then it has already
7099 # been checked for. This allows us not to report the same error more
7100 # than once.
7101 my %required_file_not_found = ();
7103 # &require_file_internal ($WHERE, $MYSTRICT, $DIRECTORY, @FILES)
7104 # --------------------------------------------------------------
7105 # Verify that the file must exist in $DIRECTORY, or install it.
7106 # $MYSTRICT is the strictness level at which this file becomes required.
7107 sub require_file_internal ($$$@)
7108 {
7109 my ($where, $mystrict, $dir, @files) = @_;
7111 foreach my $file (@files)
7112 {
7113 my $fullfile = "$dir/$file";
7114 my $found_it = 0;
7115 my $dangling_sym = 0;
7117 if (-l $fullfile && ! -f $fullfile)
7118 {
7119 $dangling_sym = 1;
7120 }
7121 elsif (dir_has_case_matching_file ($dir, $file))
7122 {
7123 $found_it = 1;
7124 maybe_push_required_file ($dir, $file, $fullfile);
7125 }
7127 # `--force-missing' only has an effect if `--add-missing' is
7128 # specified.
7129 if ($found_it && (! $add_missing || ! $force_missing))
7130 {
7131 next;
7132 }
7133 else
7134 {
7135 # If we've already looked for it, we're done. You might
7136 # wonder why we don't do this before searching for the
7137 # file. If we do that, then something like
7138 # AC_OUTPUT(subdir/foo foo) will fail to put foo.in into
7139 # DIST_COMMON.
7140 if (! $found_it)
7141 {
7142 next if defined $required_file_not_found{$fullfile};
7143 $required_file_not_found{$fullfile} = 1;
7144 }
7146 if ($strictness >= $mystrict)
7147 {
7148 if ($dangling_sym && $add_missing)
7149 {
7150 unlink ($fullfile);
7151 }
7153 my $trailer = '';
7154 my $suppress = 0;
7156 # Only install missing files according to our desired
7157 # strictness level.
7158 my $message = "required file `$fullfile' not found";
7159 if ($add_missing)
7160 {
7161 if (-f "$libdir/$file")
7162 {
7163 $suppress = 1;
7165 # Install the missing file. Symlink if we
7166 # can, copy if we must. Note: delete the file
7167 # first, in case it is a dangling symlink.
7168 $message = "installing `$fullfile'";
7169 # Windows Perl will hang if we try to delete a
7170 # file that doesn't exist.
7171 unlink ($fullfile) if -f $fullfile;
7172 if ($symlink_exists && ! $copy_missing)
7173 {
7174 if (! symlink ("$libdir/$file", $fullfile))
7175 {
7176 $suppress = 0;
7177 $trailer = "; error while making link: $!";
7178 }
7179 }
7180 elsif (system ('cp', "$libdir/$file", $fullfile))
7181 {
7182 $suppress = 0;
7183 $trailer = "\n error while copying";
7184 }
7185 reset_dir_cache ($dir);
7186 }
7188 if (! maybe_push_required_file (dirname ($fullfile),
7189 $file, $fullfile))
7190 {
7191 if (! $found_it && ! $automake_will_process_aux_dir)
7192 {
7193 # We have added the file but could not push it
7194 # into DIST_COMMON, probably because this is
7195 # an auxiliary file and we are not processing
7196 # the top level Makefile. Furthermore Automake
7197 # hasn't been asked to create the Makefile.in
7198 # that distribute the aux dir files.
7199 error ($where, 'Please make a full run of automake'
7200 . " so $fullfile gets distributed.");
7201 }
7202 }
7203 }
7204 else
7205 {
7206 $trailer = "\n `automake --add-missing' can install `$file'"
7207 if -f "$libdir/$file";
7208 }
7210 # If --force-missing was specified, and we have
7211 # actually found the file, then do nothing.
7212 next
7213 if $found_it && $force_missing;
7215 # If we couldn' install the file, but it is a target in
7216 # the Makefile, don't print anything. This allows files
7217 # like README, AUTHORS, or THANKS to be generated.
7218 next
7219 if !$suppress && rule $file;
7221 msg ($suppress ? 'note' : 'error', $where, "$message$trailer");
7222 }
7223 }
7224 }
7225 }
7227 # &require_file ($WHERE, $MYSTRICT, @FILES)
7228 # -----------------------------------------
7229 sub require_file ($$@)
7230 {
7231 my ($where, $mystrict, @files) = @_;
7232 require_file_internal ($where, $mystrict, $relative_dir, @files);
7233 }
7235 # &require_file_with_macro ($COND, $MACRO, $MYSTRICT, @FILES)
7236 # -----------------------------------------------------------
7237 sub require_file_with_macro ($$$@)
7238 {
7239 my ($cond, $macro, $mystrict, @files) = @_;
7240 $macro = rvar ($macro) unless ref $macro;
7241 require_file ($macro->rdef ($cond)->location, $mystrict, @files);
7242 }
7244 # &require_libsource_with_macro ($COND, $MACRO, $MYSTRICT, @FILES)
7245 # ----------------------------------------------------------------
7246 # Require an AC_LIBSOURCEd file. If AC_CONFIG_LIBOBJ_DIR was called, it
7247 # must be in that directory. Otherwise expect it in the current directory.
7248 sub require_libsource_with_macro ($$$@)
7249 {
7250 my ($cond, $macro, $mystrict, @files) = @_;
7251 $macro = rvar ($macro) unless ref $macro;
7252 if ($config_libobj_dir)
7253 {
7254 require_file_internal ($macro->rdef ($cond)->location, $mystrict,
7255 $config_libobj_dir, @files);
7256 }
7257 else
7258 {
7259 require_file ($macro->rdef ($cond)->location, $mystrict, @files);
7260 }
7261 }
7263 # &require_conf_file ($WHERE, $MYSTRICT, @FILES)
7264 # ----------------------------------------------
7265 # Looks in configuration path, as specified by AC_CONFIG_AUX_DIR.
7266 sub require_conf_file ($$@)
7267 {
7268 my ($where, $mystrict, @files) = @_;
7269 require_file_internal ($where, $mystrict, $config_aux_dir, @files);
7270 }
7273 # &require_conf_file_with_macro ($COND, $MACRO, $MYSTRICT, @FILES)
7274 # ----------------------------------------------------------------
7275 sub require_conf_file_with_macro ($$$@)
7276 {
7277 my ($cond, $macro, $mystrict, @files) = @_;
7278 require_conf_file (rvar ($macro)->rdef ($cond)->location,
7279 $mystrict, @files);
7280 }
7282 ################################################################
7284 # &require_build_directory ($DIRECTORY)
7285 # ------------------------------------
7286 # Emit rules to create $DIRECTORY if needed, and return
7287 # the file that any target requiring this directory should be made
7288 # dependent upon.
7289 # We don't want to emit the rule twice, and want to reuse it
7290 # for directories with equivalent names (e.g., `foo/bar' and `./foo//bar').
7291 sub require_build_directory ($)
7292 {
7293 my $directory = shift;
7295 return $directory_map{$directory} if exists $directory_map{$directory};
7297 my $cdir = File::Spec->canonpath ($directory);
7299 if (exists $directory_map{$cdir})
7300 {
7301 my $stamp = $directory_map{$cdir};
7302 $directory_map{$directory} = $stamp;
7303 return $stamp;
7304 }
7306 my $dirstamp = "$cdir/\$(am__dirstamp)";
7308 $directory_map{$directory} = $dirstamp;
7309 $directory_map{$cdir} = $dirstamp;
7311 # Set a variable for the dirstamp basename.
7312 define_pretty_variable ('am__dirstamp', TRUE, INTERNAL,
7313 '$(am__leading_dot)dirstamp');
7315 # Directory must be removed by `make distclean'.
7316 $clean_files{$dirstamp} = DIST_CLEAN;
7318 $output_rules .= ("$dirstamp:\n"
7319 . "\t\@\$(mkdir_p) $directory\n"
7320 . "\t\@: > $dirstamp\n");
7322 return $dirstamp;
7323 }
7325 # &require_build_directory_maybe ($FILE)
7326 # --------------------------------------
7327 # If $FILE lies in a subdirectory, emit a rule to create this
7328 # directory and return the file that $FILE should be made
7329 # dependent upon. Otherwise, just return the empty string.
7330 sub require_build_directory_maybe ($)
7331 {
7332 my $file = shift;
7333 my $directory = dirname ($file);
7335 if ($directory ne '.')
7336 {
7337 return require_build_directory ($directory);
7338 }
7339 else
7340 {
7341 return '';
7342 }
7343 }
7345 ################################################################
7347 # Push a list of files onto dist_common.
7348 sub push_dist_common
7349 {
7350 prog_error "push_dist_common run after handle_dist"
7351 if $handle_dist_run;
7352 Automake::Variable::define ('DIST_COMMON', VAR_AUTOMAKE, '+', TRUE, "@_",
7353 '', INTERNAL, VAR_PRETTY);
7354 }
7357 ################################################################
7359 # generate_makefile ($MAKEFILE_AM, $MAKEFILE_IN)
7360 # ----------------------------------------------
7361 # Generate a Makefile.in given the name of the corresponding Makefile and
7362 # the name of the file output by config.status.
7363 sub generate_makefile ($$)
7364 {
7365 my ($makefile_am, $makefile_in) = @_;
7367 # Reset all the Makefile.am related variables.
7368 initialize_per_input;
7370 # AUTOMAKE_OPTIONS can contains -W flags to disable or enable
7371 # warnings for this file. So hold any warning issued before
7372 # we have processed AUTOMAKE_OPTIONS.
7373 buffer_messages ('warning');
7375 # Name of input file ("Makefile.am") and output file
7376 # ("Makefile.in"). These have no directory components.
7377 $am_file_name = basename ($makefile_am);
7378 $in_file_name = basename ($makefile_in);
7380 # $OUTPUT is encoded. If it contains a ":" then the first element
7381 # is the real output file, and all remaining elements are input
7382 # files. We don't scan or otherwise deal with these input files,
7383 # other than to mark them as dependencies. See
7384 # &scan_autoconf_files for details.
7385 my ($makefile, @inputs) = split (/:/, $output_files{$makefile_in});
7387 $relative_dir = dirname ($makefile);
7388 $am_relative_dir = dirname ($makefile_am);
7389 $topsrcdir = backname ($relative_dir);
7391 read_main_am_file ($makefile_am);
7392 if (handle_options)
7393 {
7394 # Process buffered warnings.
7395 flush_messages;
7396 # Fatal error. Just return, so we can continue with next file.
7397 return;
7398 }
7399 # Process buffered warnings.
7400 flush_messages;
7402 # There are a few install-related variables that you should not define.
7403 foreach my $var ('PRE_INSTALL', 'POST_INSTALL', 'NORMAL_INSTALL')
7404 {
7405 my $v = var $var;
7406 if ($v)
7407 {
7408 my $def = $v->def (TRUE);
7409 prog_error "$var not defined in condition TRUE"
7410 unless $def;
7411 reject_var $var, "`$var' should not be defined"
7412 if $def->owner != VAR_AUTOMAKE;
7413 }
7414 }
7416 # Catch some obsolete variables.
7417 msg_var ('obsolete', 'INCLUDES',
7418 "`INCLUDES' is the old name for `AM_CPPFLAGS' (or `*_CPPFLAGS')")
7419 if var ('INCLUDES');
7421 # Must do this after reading .am file.
7422 define_variable ('subdir', $relative_dir, INTERNAL);
7424 # If DIST_SUBDIRS is defined, make sure SUBDIRS is, so that
7425 # recursive rules are enabled.
7426 define_pretty_variable ('SUBDIRS', TRUE, INTERNAL, '')
7427 if var 'DIST_SUBDIRS' && ! var 'SUBDIRS';
7429 # Check first, because we might modify some state.
7430 check_cygnus;
7431 check_gnu_standards;
7432 check_gnits_standards;
7434 handle_configure ($makefile_am, $makefile_in, $makefile, @inputs);
7435 handle_gettext;
7436 handle_libraries;
7437 handle_ltlibraries;
7438 handle_programs;
7439 handle_scripts;
7441 # These must be run after all the sources are scanned. They
7442 # use variables defined by &handle_libraries, &handle_ltlibraries,
7443 # or &handle_programs.
7444 handle_compile;
7445 handle_languages;
7446 handle_libtool;
7448 # Variables used by distdir.am and tags.am.
7449 define_pretty_variable ('SOURCES', TRUE, INTERNAL, @sources);
7450 if (! option 'no-dist')
7451 {
7452 define_pretty_variable ('DIST_SOURCES', TRUE, INTERNAL, @dist_sources);
7453 }
7455 handle_multilib;
7456 handle_texinfo;
7457 handle_emacs_lisp;
7458 handle_python;
7459 handle_java;
7460 handle_man_pages;
7461 handle_data;
7462 handle_headers;
7463 handle_subdirs;
7464 handle_tags;
7465 handle_minor_options;
7466 # Must come after handle_programs so that %known_programs is up-to-date.
7467 handle_tests;
7469 # This must come after most other rules.
7470 handle_dist;
7472 handle_footer;
7473 do_check_merge_target;
7474 handle_all ($makefile);
7476 # FIXME: Gross!
7477 if (var ('lib_LTLIBRARIES') && var ('bin_PROGRAMS'))
7478 {
7479 $output_rules .= "install-binPROGRAMS: install-libLTLIBRARIES\n\n";
7480 }
7482 handle_install;
7483 handle_clean ($makefile);
7484 handle_factored_dependencies;
7486 # Comes last, because all the above procedures may have
7487 # defined or overridden variables.
7488 $output_vars .= output_variables;
7490 check_typos;
7492 my ($out_file) = $output_directory . '/' . $makefile_in;
7494 if ($exit_code != 0)
7495 {
7496 verb "not writing $out_file because of earlier errors";
7497 return;
7498 }
7500 if (! -d ($output_directory . '/' . $am_relative_dir))
7501 {
7502 mkdir ($output_directory . '/' . $am_relative_dir, 0755);
7503 }
7505 # We make sure that `all:' is the first target.
7506 my $output =
7507 "$output_vars$output_all$output_header$output_rules$output_trailer";
7509 # Decide whether we must update the output file or not.
7510 # We have to update in the following situations.
7511 # * $force_generation is set.
7512 # * any of the output dependencies is younger than the output
7513 # * the contents of the output is different (this can happen
7514 # if the project has been populated with a file listed in
7515 # @common_files since the last run).
7516 # Output's dependencies are split in two sets:
7517 # * dependencies which are also configure dependencies
7518 # These do not change between each Makefile.am
7519 # * other dependencies, specific to the Makefile.am being processed
7520 # (such as the Makefile.am itself, or any Makefile fragment
7521 # it includes).
7522 my $timestamp = mtime $out_file;
7523 if (! $force_generation
7524 && $configure_deps_greatest_timestamp < $timestamp
7525 && $output_deps_greatest_timestamp < $timestamp
7526 && $output eq contents ($out_file))
7527 {
7528 verb "$out_file unchanged";
7529 # No need to update.
7530 return;
7531 }
7533 if (-e $out_file)
7534 {
7535 unlink ($out_file)
7536 or fatal "cannot remove $out_file: $!\n";
7537 }
7539 my $gm_file = new Automake::XFile "> $out_file";
7540 verb "creating $out_file";
7541 print $gm_file $output;
7542 }
7544 ################################################################
7549 ################################################################
7551 # Print usage information.
7552 sub usage ()
7553 {
7554 print "Usage: $0 [OPTION] ... [Makefile]...
7556 Generate Makefile.in for configure from Makefile.am.
7558 Operation modes:
7559 --help print this help, then exit
7560 --version print version number, then exit
7561 -v, --verbose verbosely list files processed
7562 --no-force only update Makefile.in's that are out of date
7563 -W, --warnings=CATEGORY report the warnings falling in CATEGORY
7565 Dependency tracking:
7566 -i, --ignore-deps disable dependency tracking code
7567 --include-deps enable dependency tracking code
7569 Flavors:
7570 --cygnus assume program is part of Cygnus-style tree
7571 --foreign set strictness to foreign
7572 --gnits set strictness to gnits
7573 --gnu set strictness to gnu
7575 Library files:
7576 -a, --add-missing add missing standard files to package
7577 --libdir=DIR directory storing library files
7578 -c, --copy with -a, copy missing files (default is symlink)
7579 -f, --force-missing force update of standard files
7581 ";
7582 Automake::ChannelDefs::usage;
7584 my ($last, @lcomm);
7585 $last = '';
7586 foreach my $iter (sort ((@common_files, @common_sometimes)))
7587 {
7588 push (@lcomm, $iter) unless $iter eq $last;
7589 $last = $iter;
7590 }
7592 my @four;
7593 print "\nFiles which are automatically distributed, if found:\n";
7594 format USAGE_FORMAT =
7595 @<<<<<<<<<<<<<<<< @<<<<<<<<<<<<<<<< @<<<<<<<<<<<<<<<< @<<<<<<<<<<<<<<<<
7596 $four[0], $four[1], $four[2], $four[3]
7597 .
7598 $~ = "USAGE_FORMAT";
7600 my $cols = 4;
7601 my $rows = int(@lcomm / $cols);
7602 my $rest = @lcomm % $cols;
7604 if ($rest)
7605 {
7606 $rows++;
7607 }
7608 else
7609 {
7610 $rest = $cols;
7611 }
7613 for (my $y = 0; $y < $rows; $y++)
7614 {
7615 @four = ("", "", "", "");
7616 for (my $x = 0; $x < $cols; $x++)
7617 {
7618 last if $y + 1 == $rows && $x == $rest;
7620 my $idx = (($x > $rest)
7621 ? ($rows * $rest + ($rows - 1) * ($x - $rest))
7622 : ($rows * $x));
7624 $idx += $y;
7625 $four[$x] = $lcomm[$idx];
7626 }
7627 write;
7628 }
7630 print "\nReport bugs to <bug-automake\@gnu.org>.\n";
7632 # --help always returns 0 per GNU standards.
7633 exit 0;
7634 }
7637 # &version ()
7638 # -----------
7639 # Print version information
7640 sub version ()
7641 {
7642 print <<EOF;
7643 automake (GNU $PACKAGE) $VERSION
7644 Written by Tom Tromey <tromey\@redhat.com>
7645 and Alexandre Duret-Lutz <adl\@gnu.org>.
7647 Copyright 2006 Free Software Foundation, Inc.
7648 This is free software; see the source for copying conditions. There is NO
7649 warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
7650 EOF
7651 # --version always returns 0 per GNU standards.
7652 exit 0;
7653 }
7655 ################################################################
7657 # Parse command line.
7658 sub parse_arguments ()
7659 {
7660 # Start off as gnu.
7661 set_strictness ('gnu');
7663 my $cli_where = new Automake::Location;
7664 my %cli_options =
7665 (
7666 'libdir=s' => \$libdir,
7667 'gnu' => sub { set_strictness ('gnu'); },
7668 'gnits' => sub { set_strictness ('gnits'); },
7669 'cygnus' => sub { set_global_option ('cygnus', $cli_where); },
7670 'foreign' => sub { set_strictness ('foreign'); },
7671 'include-deps' => sub { unset_global_option ('no-dependencies'); },
7672 'i|ignore-deps' => sub { set_global_option ('no-dependencies',
7673 $cli_where); },
7674 'no-force' => sub { $force_generation = 0; },
7675 'f|force-missing' => \$force_missing,
7676 'o|output-dir=s' => \$output_directory,
7677 'a|add-missing' => \$add_missing,
7678 'c|copy' => \$copy_missing,
7679 'v|verbose' => sub { setup_channel 'verb', silent => 0; },
7680 'W|warnings=s' => \&parse_warnings,
7681 # These long options (--Werror and --Wno-error) for backward
7682 # compatibility. Use -Werror and -Wno-error today.
7683 'Werror' => sub { parse_warnings 'W', 'error'; },
7684 'Wno-error' => sub { parse_warnings 'W', 'no-error'; },
7685 );
7686 use Getopt::Long;
7687 Getopt::Long::config ("bundling", "pass_through");
7689 # See if --version or --help is used. We want to process these before
7690 # anything else because the GNU Coding Standards require us to
7691 # `exit 0' after processing these options, and we can't guarantee this
7692 # if we treat other options first. (Handling other options first
7693 # could produce error diagnostics, and in this condition it is
7694 # confusing if Automake does `exit 0'.)
7695 my %cli_options_1st_pass =
7696 (
7697 'version' => \&version,
7698 'help' => \&usage,
7699 # Recognize all other options (and their arguments) but do nothing.
7700 map { $_ => sub {} } (keys %cli_options)
7701 );
7702 my @ARGV_backup = @ARGV;
7703 Getopt::Long::GetOptions %cli_options_1st_pass
7704 or exit 1;
7705 @ARGV = @ARGV_backup;
7707 # Now *really* process the options. This time we know that --help
7708 # and --version are not present, but we specify them nonetheless so
7709 # that ambiguous abbreviation are diagnosed.
7710 Getopt::Long::GetOptions %cli_options, 'version' => sub {}, 'help' => sub {}
7711 or exit 1;
7713 if (defined $output_directory)
7714 {
7715 msg 'obsolete', "`--output-dir' is deprecated\n";
7716 }
7717 else
7718 {
7719 # In the next release we'll remove this entirely.
7720 $output_directory = '.';
7721 }
7723 return unless @ARGV;
7725 if ($ARGV[0] =~ /^-./)
7726 {
7727 my %argopts;
7728 for my $k (keys %cli_options)
7729 {
7730 if ($k =~ /(.*)=s$/)
7731 {
7732 map { $argopts{(length ($_) == 1)
7733 ? "-$_" : "--$_" } = 1; } (split (/\|/, $1));
7734 }
7735 }
7736 if ($ARGV[0] eq '--')
7737 {
7738 shift @ARGV;
7739 }
7740 elsif (exists $argopts{$ARGV[0]})
7741 {
7742 fatal ("option `$ARGV[0]' requires an argument\n"
7743 . "Try `$0 --help' for more information.");
7744 }
7745 else
7746 {
7747 fatal ("unrecognized option `$ARGV[0]'.\n"
7748 . "Try `$0 --help' for more information.");
7749 }
7750 }
7752 my $errspec = 0;
7753 foreach my $arg (@ARGV)
7754 {
7755 fatal ("empty argument\nTry `$0 --help' for more information.")
7756 if ($arg eq '');
7758 # Handle $local:$input syntax.
7759 my ($local, @rest) = split (/:/, $arg);
7760 @rest = ("$local.in",) unless @rest;
7761 my $input = locate_am @rest;
7762 if ($input)
7763 {
7764 push @input_files, $input;
7765 $output_files{$input} = join (':', ($local, @rest));
7766 }
7767 else
7768 {
7769 error "no Automake input file found for `$arg'";
7770 $errspec = 1;
7771 }
7772 }
7773 fatal "no input file found among supplied arguments"
7774 if $errspec && ! @input_files;
7775 }
7777 ################################################################
7779 # Parse the WARNINGS environment variable.
7780 parse_WARNINGS;
7782 # Parse command line.
7783 parse_arguments;
7785 $configure_ac = require_configure_ac;
7787 # Do configure.ac scan only once.
7788 scan_autoconf_files;
7790 if (! @input_files)
7791 {
7792 my $msg = '';
7793 $msg = "\nDid you forget AC_CONFIG_FILES([Makefile]) in $configure_ac?"
7794 if -f 'Makefile.am';
7795 fatal ("no `Makefile.am' found for any configure output$msg");
7796 }
7798 # Now do all the work on each file.
7799 foreach my $file (@input_files)
7800 {
7801 ($am_file = $file) =~ s/\.in$//;
7802 if (! -f ($am_file . '.am'))
7803 {
7804 error "`$am_file.am' does not exist";
7805 }
7806 else
7807 {
7808 # Any warning setting now local to this Makefile.am.
7809 dup_channel_setup;
7811 generate_makefile ($am_file . '.am', $file);
7813 # Back out any warning setting.
7814 drop_channel_setup;
7815 }
7816 }
7818 exit $exit_code;
7821 ### Setup "GNU" style for perl-mode and cperl-mode.
7822 ## Local Variables:
7823 ## perl-indent-level: 2
7824 ## perl-continued-statement-offset: 2
7825 ## perl-continued-brace-offset: 0
7826 ## perl-brace-offset: 0
7827 ## perl-brace-imaginary-offset: 0
7828 ## perl-label-offset: -2
7829 ## cperl-indent-level: 2
7830 ## cperl-brace-offset: 0
7831 ## cperl-continued-brace-offset: 0
7832 ## cperl-label-offset: -2
7833 ## cperl-extra-newline-before-brace: t
7834 ## cperl-merge-trailing-else: nil
7835 ## cperl-continued-statement-offset: 2
7836 ## End: