| blob | 3158063107bed513e78f802a2545495fa13ab139 |
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 # use 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 $linker = '';
1794 }
1795 else
1796 {
1797 # No error message here. Used to have one, but it was
1798 # very unpopular.
1799 # FIXME: we could potentially do more processing here,
1800 # perhaps treating the new extension as though it were a
1801 # new source extension (as above). This would require
1802 # more restructuring than is appropriate right now.
1803 next;
1804 }
1806 err_am "object `$object' created by `$full' and `$object_map{$object}'"
1807 if (defined $object_map{$object}
1808 && $object_map{$object} ne $full);
1810 my $comp_val = (($object =~ /\.lo$/)
1811 ? COMPILE_LIBTOOL : COMPILE_ORDINARY);
1812 (my $comp_obj = $object) =~ s/\.lo$/.\$(OBJEXT)/;
1813 if (defined $object_compilation_map{$comp_obj}
1814 && $object_compilation_map{$comp_obj} != 0
1815 # Only see the error once.
1816 && ($object_compilation_map{$comp_obj}
1817 != (COMPILE_LIBTOOL | COMPILE_ORDINARY))
1818 && $object_compilation_map{$comp_obj} != $comp_val)
1819 {
1820 err_am "object `$comp_obj' created both with libtool and without";
1821 }
1822 $object_compilation_map{$comp_obj} |= $comp_val;
1824 if (defined $lang)
1825 {
1826 # Let the language do some special magic if required.
1827 $lang->target_hook ($aggregate, $object, $full, %transform);
1828 }
1830 if ($derived_source)
1831 {
1832 prog_error ($lang->name . " has automatic dependency tracking")
1833 if $lang->autodep ne 'no';
1834 # Make sure this new source file is handled next. That will
1835 # make it appear to be at the right place in the list.
1836 unshift (@files, $object);
1837 # Distribute derived sources unless the source they are
1838 # derived from is not.
1839 &push_dist_common ($object)
1840 unless ($topparent =~ /^(?:nobase_)?nodist_/);
1841 next;
1842 }
1844 $linkers_used{$linker} = 1;
1846 push (@result, $object);
1848 if (! defined $object_map{$object})
1849 {
1850 my @dep_list = ();
1851 $object_map{$object} = $full;
1853 # If resulting object is in subdir, we need to make
1854 # sure the subdir exists at build time.
1855 if ($object =~ /\//)
1856 {
1857 # FIXME: check that $DIRECTORY is somewhere in the
1858 # project
1860 # For Java, the way we're handling it right now, a
1861 # `..' component doesn't make sense.
1862 if ($lang->name eq 'java' && $object =~ /(\/|^)\.\.\//)
1863 {
1864 err_am "`$full' should not contain a `..' component";
1865 }
1867 # Make sure object is removed by `make mostlyclean'.
1868 $compile_clean_files{$object} = MOSTLY_CLEAN;
1869 # If we have a libtool object then we also must remove
1870 # the ordinary .o.
1871 if ($object =~ /\.lo$/)
1872 {
1873 (my $xobj = $object) =~ s,lo$,\$(OBJEXT),;
1874 $compile_clean_files{$xobj} = MOSTLY_CLEAN;
1876 # Remove any libtool object in this directory.
1877 $libtool_clean_directories{$directory} = 1;
1878 }
1880 push (@dep_list, require_build_directory ($directory));
1882 # If we're generating dependencies, we also want
1883 # to make sure that the appropriate subdir of the
1884 # .deps directory is created.
1885 push (@dep_list,
1886 require_build_directory ($directory . '/$(DEPDIR)'))
1887 unless option 'no-dependencies';
1888 }
1890 &pretty_print_rule ($object . ':', "\t", @dep_list)
1891 if scalar @dep_list > 0;
1892 }
1894 # Transform .o or $o file into .P file (for automatic
1895 # dependency code).
1896 if ($lang && $lang->autodep ne 'no')
1897 {
1898 my $depfile = $object;
1899 $depfile =~ s/\.([^.]*)$/.P$1/;
1900 $depfile =~ s/\$\(OBJEXT\)$/o/;
1901 $dep_files{dirname ($depfile) . '/$(DEPDIR)/'
1902 . basename ($depfile)} = 1;
1903 }
1904 }
1906 return @result;
1907 }
1910 # $LINKER
1911 # define_objects_from_sources ($VAR, $OBJVAR, $NODEFINE, $ONE_FILE,
1912 # $OBJ, $PARENT, $TOPPARENT, $WHERE, %TRANSFORM)
1913 # ---------------------------------------------------------------------------
1914 # Define an _OBJECTS variable for a _SOURCES variable (or subvariable)
1915 #
1916 # Arguments are:
1917 # $VAR is the name of the _SOURCES variable
1918 # $OBJVAR is the name of the _OBJECTS variable if known (otherwise
1919 # it will be generated and returned).
1920 # $NODEFINE is a boolean: if true, $OBJVAR will not be defined (but
1921 # work done to determine the linker will be).
1922 # $ONE_FILE is the canonical (transformed) name of object to build
1923 # $OBJ is the object extension (i.e. either `.o' or `.lo').
1924 # $TOPPARENT is the _SOURCES variable being processed.
1925 # $WHERE context into which this definition is done
1926 # %TRANSFORM extra arguments to pass to file_contents when producing
1927 # rules
1928 #
1929 # Result is a pair ($LINKER, $OBJVAR):
1930 # $LINKER is a boolean, true if a linker is needed to deal with the objects
1931 sub define_objects_from_sources ($$$$$$$%)
1932 {
1933 my ($var, $objvar, $nodefine, $one_file,
1934 $obj, $topparent, $where, %transform) = @_;
1936 my $needlinker = "";
1938 transform_variable_recursively
1939 ($var, $objvar, 'am__objects', $nodefine, $where,
1940 # The transform code to run on each filename.
1941 sub {
1942 my ($subvar, $val, $cond, $full_cond) = @_;
1943 my @trans = handle_single_transform ($subvar, $topparent,
1944 $one_file, $obj, $val,
1945 %transform);
1946 $needlinker = "true" if @trans;
1947 return @trans;
1948 });
1950 return $needlinker;
1951 }
1954 # handle_source_transform ($CANON_TARGET, $TARGET, $OBJEXT, $WHERE, %TRANSFORM)
1955 # -----------------------------------------------------------------------------
1956 # Handle SOURCE->OBJECT transform for one program or library.
1957 # Arguments are:
1958 # canonical (transformed) name of target to build
1959 # actual target of object to build
1960 # object extension (i.e., either `.o' or `$o')
1961 # location of the source variable
1962 # extra arguments to pass to file_contents when producing rules
1963 # Return the name of the linker variable that must be used.
1964 # Empty return means just use `LINK'.
1965 sub handle_source_transform ($$$$%)
1966 {
1967 # one_file is canonical name. unxformed is given name. obj is
1968 # object extension.
1969 my ($one_file, $unxformed, $obj, $where, %transform) = @_;
1971 my $linker = '';
1973 # No point in continuing if _OBJECTS is defined.
1974 return if reject_var ($one_file . '_OBJECTS',
1975 $one_file . '_OBJECTS should not be defined');
1977 my %used_pfx = ();
1978 my $needlinker;
1979 %linkers_used = ();
1980 foreach my $prefix ('', 'EXTRA_', 'dist_', 'nodist_',
1981 'dist_EXTRA_', 'nodist_EXTRA_')
1982 {
1983 my $varname = $prefix . $one_file . "_SOURCES";
1984 my $var = var $varname;
1985 next unless $var;
1987 # We are going to define _OBJECTS variables using the prefix.
1988 # Then we glom them all together. So we can't use the null
1989 # prefix here as we need it later.
1990 my $xpfx = ($prefix eq '') ? 'am_' : $prefix;
1992 # Keep track of which prefixes we saw.
1993 $used_pfx{$xpfx} = 1
1994 unless $prefix =~ /EXTRA_/;
1996 push @sources, "\$($varname)";
1997 push @dist_sources, shadow_unconditionally ($varname, $where)
1998 unless (option ('no-dist') || $prefix =~ /^nodist_/);
2000 $needlinker |=
2001 define_objects_from_sources ($varname,
2002 $xpfx . $one_file . '_OBJECTS',
2003 $prefix =~ /EXTRA_/,
2004 $one_file, $obj, $varname, $where,
2005 DIST_SOURCE => ($prefix !~ /^nodist_/),
2006 %transform);
2007 }
2008 if ($needlinker)
2009 {
2010 $linker ||= &resolve_linker (%linkers_used);
2011 }
2013 my @keys = sort keys %used_pfx;
2014 if (scalar @keys == 0)
2015 {
2016 # The default source for libfoo.la is libfoo.c, but for
2017 # backward compatibility we first look at libfoo_la.c
2018 my $old_default_source = "$one_file.c";
2019 (my $default_source = $unxformed) =~ s,(\.[^./\\]*)?$,.c,;
2020 if ($old_default_source ne $default_source
2021 && (rule $old_default_source
2022 || rule '$(srcdir)/' . $old_default_source
2023 || rule '${srcdir}/' . $old_default_source
2024 || -f $old_default_source))
2025 {
2026 my $loc = $where->clone;
2027 $loc->pop_context;
2028 msg ('obsolete', $loc,
2029 "the default source for `$unxformed' has been changed "
2030 . "to `$default_source'.\n(Using `$old_default_source' for "
2031 . "backward compatibility.)");
2032 $default_source = $old_default_source;
2033 }
2034 # If a rule exists to build this source with a $(srcdir)
2035 # prefix, use that prefix in our variables too. This is for
2036 # the sake of BSD Make.
2037 if (rule '$(srcdir)/' . $default_source
2038 || rule '${srcdir}/' . $default_source)
2039 {
2040 $default_source = '$(srcdir)/' . $default_source;
2041 }
2043 &define_variable ($one_file . "_SOURCES", $default_source, $where);
2044 push (@sources, $default_source);
2045 push (@dist_sources, $default_source);
2047 %linkers_used = ();
2048 my (@result) =
2049 handle_single_transform ($one_file . '_SOURCES',
2050 $one_file . '_SOURCES',
2051 $one_file, $obj,
2052 $default_source, %transform);
2053 $linker ||= &resolve_linker (%linkers_used);
2054 define_pretty_variable ($one_file . '_OBJECTS', TRUE, $where, @result);
2055 }
2056 else
2057 {
2058 @keys = map { '$(' . $_ . $one_file . '_OBJECTS)' } @keys;
2059 define_pretty_variable ($one_file . '_OBJECTS', TRUE, $where, @keys);
2060 }
2062 # If we want to use `LINK' we must make sure it is defined.
2063 if ($linker eq '')
2064 {
2065 $need_link = 1;
2066 }
2068 return $linker;
2069 }
2072 # handle_lib_objects ($XNAME, $VAR)
2073 # ---------------------------------
2074 # Special-case ALLOCA and LIBOBJS substitutions in _LDADD or _LIBADD variables.
2075 # Also, generate _DEPENDENCIES variable if appropriate.
2076 # Arguments are:
2077 # transformed name of object being built, or empty string if no object
2078 # name of _LDADD/_LIBADD-type variable to examine
2079 # Returns 1 if LIBOBJS seen, 0 otherwise.
2080 sub handle_lib_objects
2081 {
2082 my ($xname, $varname) = @_;
2084 my $var = var ($varname);
2085 prog_error "handle_lib_objects: `$varname' undefined"
2086 unless $var;
2087 prog_error "handle_lib_objects: unexpected variable name `$varname'"
2088 unless $varname =~ /^(.*)(?:LIB|LD)ADD$/;
2089 my $prefix = $1 || 'AM_';
2091 my $seen_libobjs = 0;
2092 my $flagvar = 0;
2094 transform_variable_recursively
2095 ($varname, $xname . '_DEPENDENCIES', 'am__DEPENDENCIES',
2096 ! $xname, INTERNAL,
2097 # Transformation function, run on each filename.
2098 sub {
2099 my ($subvar, $val, $cond, $full_cond) = @_;
2101 if ($val =~ /^-/)
2102 {
2103 # Skip -lfoo and -Ldir silently; these are explicitly allowed.
2104 if ($val !~ /^-[lL]/ &&
2105 # Skip -dlopen and -dlpreopen; these are explicitly allowed
2106 # for Libtool libraries or programs. (Actually we are a bit
2107 # laxest here since this code also applies to non-libtool
2108 # libraries or programs, for which -dlopen and -dlopreopen
2109 # are pure non-sence. Diagnosting this doesn't seems very
2110 # important: the developer will quickly get complaints from
2111 # the linker.)
2112 $val !~ /^-dl(?:pre)?open$/ &&
2113 # Only get this error once.
2114 ! $flagvar)
2115 {
2116 $flagvar = 1;
2117 # FIXME: should display a stack of nested variables
2118 # as context when $var != $subvar.
2119 err_var ($var, "linker flags such as `$val' belong in "
2120 . "`${prefix}LDFLAGS");
2121 }
2122 return ();
2123 }
2124 elsif ($val !~ /^\@.*\@$/)
2125 {
2126 # Assume we have a file of some sort, and output it into the
2127 # dependency variable. Autoconf substitutions are not output;
2128 # rarely is a new dependency substituted into e.g. foo_LDADD
2129 # -- but bad things (e.g. -lX11) are routinely substituted.
2130 # Note that LIBOBJS and ALLOCA are exceptions to this rule,
2131 # and handled specially below.
2132 return $val;
2133 }
2134 elsif ($val =~ /^\@(LT)?LIBOBJS\@$/)
2135 {
2136 handle_LIBOBJS ($subvar, $cond, $1);
2137 $seen_libobjs = 1;
2138 return $val;
2139 }
2140 elsif ($val =~ /^\@(LT)?ALLOCA\@$/)
2141 {
2142 handle_ALLOCA ($subvar, $cond, $1);
2143 return $val;
2144 }
2145 else
2146 {
2147 return ();
2148 }
2149 });
2151 return $seen_libobjs;
2152 }
2154 # handle_LIBOBJS_or_ALLOCA ($VAR)
2155 # -------------------------------
2156 # Definitions common to LIBOBJS and ALLOCA.
2157 # VAR should be one of LIBOBJS, LTLIBOBJS, ALLOCA, or LTALLOCA.
2158 sub handle_LIBOBJS_or_ALLOCA ($)
2159 {
2160 my ($var) = @_;
2162 my $dir = $config_libobj_dir ? "$config_libobj_dir/" : '';
2164 # If LIBOBJS files must be built in another directory we have
2165 # to define LIBOBJDIR and ensure the files get cleaned.
2166 # Otherwise LIBOBJDIR can be left undefined, and the cleaning
2167 # is achieved by `rm -f *.($OBJEXT)' in compile.am.
2168 if ($config_libobj_dir
2169 && $relative_dir ne $config_libobj_dir)
2170 {
2171 if (option 'subdir-objects')
2172 {
2173 define_variable ('LIBOBJDIR', "\$(top_builddir)/$dir", INTERNAL);
2174 $clean_files{"\$($var)"} = MOSTLY_CLEAN;
2175 # If LTLIBOBJS is used, we must also clear LIBOBJS (which might
2176 # be created by libtool as a side-effect of creating LTLIBOBJS).
2177 $clean_files{"\$($var)"} = MOSTLY_CLEAN if $var =~ s/^LT//;
2179 }
2180 else
2181 {
2182 error ("`\$($var)' cannot be used outside `$dir' if"
2183 . " `subdir-objects' is not set");
2184 }
2185 }
2187 return $dir;
2188 }
2190 sub handle_LIBOBJS ($$$)
2191 {
2192 my ($var, $cond, $lt) = @_;
2193 $lt ||= '';
2194 my $myobjext = ($1 ? 'l' : '') . 'o';
2196 $var->requires_variables ("\@${lt}LIBOBJS\@ used", $lt . 'LIBOBJS')
2197 if ! keys %libsources;
2199 my $dir = handle_LIBOBJS_or_ALLOCA "${lt}LIBOBJS";
2201 foreach my $iter (keys %libsources)
2202 {
2203 if ($iter =~ /\.[cly]$/)
2204 {
2205 &saw_extension ($&);
2206 &saw_extension ('.c');
2207 }
2209 if ($iter =~ /\.h$/)
2210 {
2211 require_libsource_with_macro ($cond, $var, FOREIGN, $iter);
2212 }
2213 elsif ($iter ne 'alloca.c')
2214 {
2215 my $rewrite = $iter;
2216 $rewrite =~ s/\.c$/.P$myobjext/;
2217 $dep_files{$dir . '$(DEPDIR)/' . $rewrite} = 1;
2218 $rewrite = "^" . quotemeta ($iter) . "\$";
2219 # Only require the file if it is not a built source.
2220 my $bs = var ('BUILT_SOURCES');
2221 if (! $bs || ! grep (/$rewrite/, $bs->value_as_list_recursive))
2222 {
2223 require_libsource_with_macro ($cond, $var, FOREIGN, $iter);
2224 }
2225 }
2226 }
2227 }
2229 sub handle_ALLOCA ($$$)
2230 {
2231 my ($var, $cond, $lt) = @_;
2232 my $myobjext = ($lt ? 'l' : '') . 'o';
2233 $lt ||= '';
2234 my $dir = handle_LIBOBJS_or_ALLOCA "${lt}ALLOCA";
2236 $var->requires_variables ("\@${lt}ALLOCA\@ used", $lt . 'ALLOCA');
2237 $dep_files{$dir . '$(DEPDIR)/alloca.P' . $myobjext} = 1;
2238 require_libsource_with_macro ($cond, $var, FOREIGN, 'alloca.c');
2239 &saw_extension ('.c');
2240 }
2242 # Canonicalize the input parameter
2243 sub canonicalize
2244 {
2245 my ($string) = @_;
2246 $string =~ tr/A-Za-z0-9_\@/_/c;
2247 return $string;
2248 }
2250 # Canonicalize a name, and check to make sure the non-canonical name
2251 # is never used. Returns canonical name. Arguments are name and a
2252 # list of suffixes to check for.
2253 sub check_canonical_spelling
2254 {
2255 my ($name, @suffixes) = @_;
2257 my $xname = &canonicalize ($name);
2258 if ($xname ne $name)
2259 {
2260 foreach my $xt (@suffixes)
2261 {
2262 reject_var ("$name$xt", "use `$xname$xt', not `$name$xt'");
2263 }
2264 }
2266 return $xname;
2267 }
2270 # handle_compile ()
2271 # -----------------
2272 # Set up the compile suite.
2273 sub handle_compile ()
2274 {
2275 return
2276 unless $get_object_extension_was_run;
2278 # Boilerplate.
2279 my $default_includes = '';
2280 if (! option 'nostdinc')
2281 {
2282 $default_includes = ' -I. -I$(srcdir)';
2284 my $var = var 'CONFIG_HEADER';
2285 if ($var)
2286 {
2287 foreach my $hdr (split (' ', $var->variable_value))
2288 {
2289 $default_includes .= ' -I' . dirname ($hdr);
2290 }
2291 }
2292 }
2294 my (@mostly_rms, @dist_rms);
2295 foreach my $item (sort keys %compile_clean_files)
2296 {
2297 if ($compile_clean_files{$item} == MOSTLY_CLEAN)
2298 {
2299 push (@mostly_rms, "\t-rm -f $item");
2300 }
2301 elsif ($compile_clean_files{$item} == DIST_CLEAN)
2302 {
2303 push (@dist_rms, "\t-rm -f $item");
2304 }
2305 else
2306 {
2307 prog_error 'invalid entry in %compile_clean_files';
2308 }
2309 }
2311 my ($coms, $vars, $rules) =
2312 &file_contents_internal (1, "$libdir/am/compile.am",
2313 new Automake::Location,
2314 ('DEFAULT_INCLUDES' => $default_includes,
2315 'MOSTLYRMS' => join ("\n", @mostly_rms),
2316 'DISTRMS' => join ("\n", @dist_rms)));
2317 $output_vars .= $vars;
2318 $output_rules .= "$coms$rules";
2320 # Check for automatic de-ANSI-fication.
2321 if (option 'ansi2knr')
2322 {
2323 my ($ansi2knr_filename, $ansi2knr_where) = @{option 'ansi2knr'};
2324 my $ansi2knr_dir = '';
2326 require_variables ($ansi2knr_where, "option `ansi2knr' is used",
2327 TRUE, "ANSI2KNR", "U");
2329 # topdir is where ansi2knr should be.
2330 if ($ansi2knr_filename eq 'ansi2knr')
2331 {
2332 # Only require ansi2knr files if they should appear in
2333 # this directory.
2334 require_file ($ansi2knr_where, FOREIGN,
2335 'ansi2knr.c', 'ansi2knr.1');
2337 # ansi2knr needs to be built before subdirs, so unshift it.
2338 unshift (@all, '$(ANSI2KNR)');
2339 }
2340 else
2341 {
2342 $ansi2knr_dir = dirname ($ansi2knr_filename);
2343 }
2345 $output_rules .= &file_contents ('ansi2knr',
2346 new Automake::Location,
2347 'ANSI2KNR-DIR' => $ansi2knr_dir);
2349 }
2350 }
2352 # handle_libtool ()
2353 # -----------------
2354 # Handle libtool rules.
2355 sub handle_libtool
2356 {
2357 return unless var ('LIBTOOL');
2359 # Libtool requires some files, but only at top level.
2360 # (Starting with Libtool 2.0 we do not have to bother. These
2361 # requirements are done with AC_REQUIRE_AUX_FILE.)
2362 require_conf_file_with_macro (TRUE, 'LIBTOOL', FOREIGN, @libtool_files)
2363 if $relative_dir eq '.' && ! $libtool_new_api;
2365 my @libtool_rms;
2366 foreach my $item (sort keys %libtool_clean_directories)
2367 {
2368 my $dir = ($item eq '.') ? '' : "$item/";
2369 # .libs is for Unix, _libs for DOS.
2370 push (@libtool_rms, "\t-rm -rf ${dir}.libs ${dir}_libs");
2371 }
2373 check_user_variables 'LIBTOOLFLAGS';
2375 # Output the libtool compilation rules.
2376 $output_rules .= &file_contents ('libtool',
2377 new Automake::Location,
2378 LTRMS => join ("\n", @libtool_rms));
2379 }
2381 # handle_programs ()
2382 # ------------------
2383 # Handle C programs.
2384 sub handle_programs
2385 {
2386 my @proglist = &am_install_var ('progs', 'PROGRAMS',
2387 'bin', 'sbin', 'libexec', 'pkglib',
2388 'noinst', 'check');
2389 return if ! @proglist;
2391 my $seen_global_libobjs =
2392 var ('LDADD') && &handle_lib_objects ('', 'LDADD');
2394 foreach my $pair (@proglist)
2395 {
2396 my ($where, $one_file) = @$pair;
2398 my $seen_libobjs = 0;
2399 my $obj = get_object_extension '.$(OBJEXT)';
2401 # Strip any $(EXEEXT) suffix the user might have added, or this
2402 # will confuse &handle_source_transform and &check_canonical_spelling.
2403 # We'll add $(EXEEXT) back later anyway.
2404 $one_file =~ s/\$\(EXEEXT\)$//;
2406 $known_programs{$one_file} = $where;
2408 # Canonicalize names and check for misspellings.
2409 my $xname = &check_canonical_spelling ($one_file, '_LDADD', '_LDFLAGS',
2410 '_SOURCES', '_OBJECTS',
2411 '_DEPENDENCIES');
2413 $where->push_context ("while processing program `$one_file'");
2414 $where->set (INTERNAL->get);
2416 my $linker = &handle_source_transform ($xname, $one_file, $obj, $where,
2417 NONLIBTOOL => 1, LIBTOOL => 0);
2419 if (var ($xname . "_LDADD"))
2420 {
2421 $seen_libobjs = &handle_lib_objects ($xname, $xname . '_LDADD');
2422 }
2423 else
2424 {
2425 # User didn't define prog_LDADD override. So do it.
2426 &define_variable ($xname . '_LDADD', '$(LDADD)', $where);
2428 # This does a bit too much work. But we need it to
2429 # generate _DEPENDENCIES when appropriate.
2430 if (var ('LDADD'))
2431 {
2432 $seen_libobjs = &handle_lib_objects ($xname, 'LDADD');
2433 }
2434 }
2436 reject_var ($xname . '_LIBADD',
2437 "use `${xname}_LDADD', not `${xname}_LIBADD'");
2439 set_seen ($xname . '_DEPENDENCIES');
2440 set_seen ($xname . '_LDFLAGS');
2442 # Determine program to use for link.
2443 my $xlink = &define_per_target_linker_variable ($linker, $xname);
2445 # If the resulting program lies into a subdirectory,
2446 # make sure this directory will exist.
2447 my $dirstamp = require_build_directory_maybe ($one_file);
2449 $output_rules .= &file_contents ('program',
2450 $where,
2451 PROGRAM => $one_file,
2452 XPROGRAM => $xname,
2453 XLINK => $xlink,
2454 DIRSTAMP => $dirstamp,
2455 EXEEXT => '$(EXEEXT)');
2457 if ($seen_libobjs || $seen_global_libobjs)
2458 {
2459 if (var ($xname . '_LDADD'))
2460 {
2461 &check_libobjs_sources ($xname, $xname . '_LDADD');
2462 }
2463 elsif (var ('LDADD'))
2464 {
2465 &check_libobjs_sources ($xname, 'LDADD');
2466 }
2467 }
2468 }
2469 }
2472 # handle_libraries ()
2473 # -------------------
2474 # Handle libraries.
2475 sub handle_libraries
2476 {
2477 my @liblist = &am_install_var ('libs', 'LIBRARIES',
2478 'lib', 'pkglib', 'noinst', 'check');
2479 return if ! @liblist;
2481 my @prefix = am_primary_prefixes ('LIBRARIES', 0, 'lib', 'pkglib',
2482 'noinst', 'check');
2484 if (@prefix)
2485 {
2486 my $var = rvar ($prefix[0] . '_LIBRARIES');
2487 $var->requires_variables ('library used', 'RANLIB');
2488 }
2490 &define_variable ('AR', 'ar', INTERNAL);
2491 &define_variable ('ARFLAGS', 'cru', INTERNAL);
2493 foreach my $pair (@liblist)
2494 {
2495 my ($where, $onelib) = @$pair;
2497 my $seen_libobjs = 0;
2498 # Check that the library fits the standard naming convention.
2499 my $bn = basename ($onelib);
2500 if ($bn !~ /^lib.*\.a$/)
2501 {
2502 $bn =~ s/^(?:lib)?(.*?)(?:\.[^.]*)?$/lib$1.a/;
2503 my $suggestion = dirname ($onelib) . "/$bn";
2504 $suggestion =~ s|^\./||g;
2505 msg ('error-gnu/warn', $where,
2506 "`$onelib' is not a standard library name\n"
2507 . "did you mean `$suggestion'?")
2508 }
2510 $where->push_context ("while processing library `$onelib'");
2511 $where->set (INTERNAL->get);
2513 my $obj = get_object_extension '.$(OBJEXT)';
2515 # Canonicalize names and check for misspellings.
2516 my $xlib = &check_canonical_spelling ($onelib, '_LIBADD', '_SOURCES',
2517 '_OBJECTS', '_DEPENDENCIES',
2518 '_AR');
2520 if (! var ($xlib . '_AR'))
2521 {
2522 &define_variable ($xlib . '_AR', '$(AR) $(ARFLAGS)', $where);
2523 }
2525 # Generate support for conditional object inclusion in
2526 # libraries.
2527 if (var ($xlib . '_LIBADD'))
2528 {
2529 if (&handle_lib_objects ($xlib, $xlib . '_LIBADD'))
2530 {
2531 $seen_libobjs = 1;
2532 }
2533 }
2534 else
2535 {
2536 &define_variable ($xlib . "_LIBADD", '', $where);
2537 }
2539 reject_var ($xlib . '_LDADD',
2540 "use `${xlib}_LIBADD', not `${xlib}_LDADD'");
2542 # Make sure we at look at this.
2543 set_seen ($xlib . '_DEPENDENCIES');
2545 &handle_source_transform ($xlib, $onelib, $obj, $where,
2546 NONLIBTOOL => 1, LIBTOOL => 0);
2548 # If the resulting library lies into a subdirectory,
2549 # make sure this directory will exist.
2550 my $dirstamp = require_build_directory_maybe ($onelib);
2552 $output_rules .= &file_contents ('library',
2553 $where,
2554 LIBRARY => $onelib,
2555 XLIBRARY => $xlib,
2556 DIRSTAMP => $dirstamp);
2558 if ($seen_libobjs)
2559 {
2560 if (var ($xlib . '_LIBADD'))
2561 {
2562 &check_libobjs_sources ($xlib, $xlib . '_LIBADD');
2563 }
2564 }
2565 }
2566 }
2569 # handle_ltlibraries ()
2570 # ---------------------
2571 # Handle shared libraries.
2572 sub handle_ltlibraries
2573 {
2574 my @liblist = &am_install_var ('ltlib', 'LTLIBRARIES',
2575 'noinst', 'lib', 'pkglib', 'check');
2576 return if ! @liblist;
2578 my @prefix = am_primary_prefixes ('LTLIBRARIES', 0, 'lib', 'pkglib',
2579 'noinst', 'check');
2581 if (@prefix)
2582 {
2583 my $var = rvar ($prefix[0] . '_LTLIBRARIES');
2584 $var->requires_variables ('Libtool library used', 'LIBTOOL');
2585 }
2587 my %instdirs = ();
2588 my %instconds = ();
2589 my %liblocations = (); # Location (in Makefile.am) of each library.
2591 foreach my $key (@prefix)
2592 {
2593 # Get the installation directory of each library.
2594 (my $dir = $key) =~ s/^nobase_//;
2595 my $var = rvar ($key . '_LTLIBRARIES');
2597 # We reject libraries which are installed in several places
2598 # in the same condition, because we can only specify one
2599 # `-rpath' option.
2600 $var->traverse_recursively
2601 (sub
2602 {
2603 my ($var, $val, $cond, $full_cond) = @_;
2604 my $hcond = $full_cond->human;
2605 my $where = $var->rdef ($cond)->location;
2606 # A library cannot be installed in different directory
2607 # in overlapping conditions.
2608 if (exists $instconds{$val})
2609 {
2610 my ($msg, $acond) =
2611 $instconds{$val}->ambiguous_p ($val, $full_cond);
2613 if ($msg)
2614 {
2615 error ($where, $msg, partial => 1);
2617 my $dirtxt = "installed in `$dir'";
2618 $dirtxt = "built for `$dir'"
2619 if $dir eq 'EXTRA' || $dir eq 'noinst' || $dir eq 'check';
2620 my $dircond =
2621 $full_cond->true ? "" : " in condition $hcond";
2623 error ($where, "`$val' should be $dirtxt$dircond ...",
2624 partial => 1);
2626 my $hacond = $acond->human;
2627 my $adir = $instdirs{$val}{$acond};
2628 my $adirtxt = "installed in `$adir'";
2629 $adirtxt = "built for `$adir'"
2630 if ($adir eq 'EXTRA' || $adir eq 'noinst'
2631 || $adir eq 'check');
2632 my $adircond = $acond->true ? "" : " in condition $hacond";
2634 my $onlyone = ($dir ne $adir) ?
2635 ("\nLibtool libraries can be built for only one "
2636 . "destination.") : "";
2638 error ($liblocations{$val}{$acond},
2639 "... and should also be $adirtxt$adircond.$onlyone");
2640 return;
2641 }
2642 }
2643 else
2644 {
2645 $instconds{$val} = new Automake::DisjConditions;
2646 }
2647 $instdirs{$val}{$full_cond} = $dir;
2648 $liblocations{$val}{$full_cond} = $where;
2649 $instconds{$val} = $instconds{$val}->merge ($full_cond);
2650 },
2651 sub
2652 {
2653 return ();
2654 },
2655 skip_ac_subst => 1);
2656 }
2658 foreach my $pair (@liblist)
2659 {
2660 my ($where, $onelib) = @$pair;
2662 my $seen_libobjs = 0;
2663 my $obj = get_object_extension '.lo';
2665 # Canonicalize names and check for misspellings.
2666 my $xlib = &check_canonical_spelling ($onelib, '_LIBADD', '_LDFLAGS',
2667 '_SOURCES', '_OBJECTS',
2668 '_DEPENDENCIES');
2670 # Check that the library fits the standard naming convention.
2671 my $libname_rx = '^lib.*\.la';
2672 my $ldvar = var ("${xlib}_LDFLAGS") || var ('AM_LDFLAGS');
2673 my $ldvar2 = var ('LDFLAGS');
2674 if (($ldvar && grep (/-module/, $ldvar->value_as_list_recursive))
2675 || ($ldvar2 && grep (/-module/, $ldvar2->value_as_list_recursive)))
2676 {
2677 # Relax name checking for libtool modules.
2678 $libname_rx = '\.la';
2679 }
2681 my $bn = basename ($onelib);
2682 if ($bn !~ /$libname_rx$/)
2683 {
2684 my $type = 'library';
2685 if ($libname_rx eq '\.la')
2686 {
2687 $bn =~ s/^(lib|)(.*?)(?:\.[^.]*)?$/$1$2.la/;
2688 $type = 'module';
2689 }
2690 else
2691 {
2692 $bn =~ s/^(?:lib)?(.*?)(?:\.[^.]*)?$/lib$1.la/;
2693 }
2694 my $suggestion = dirname ($onelib) . "/$bn";
2695 $suggestion =~ s|^\./||g;
2696 msg ('error-gnu/warn', $where,
2697 "`$onelib' is not a standard libtool $type name\n"
2698 . "did you mean `$suggestion'?")
2699 }
2701 $where->push_context ("while processing Libtool library `$onelib'");
2702 $where->set (INTERNAL->get);
2704 # Make sure we look at these.
2705 set_seen ($xlib . '_LDFLAGS');
2706 set_seen ($xlib . '_DEPENDENCIES');
2708 # Generate support for conditional object inclusion in
2709 # libraries.
2710 if (var ($xlib . '_LIBADD'))
2711 {
2712 if (&handle_lib_objects ($xlib, $xlib . '_LIBADD'))
2713 {
2714 $seen_libobjs = 1;
2715 }
2716 }
2717 else
2718 {
2719 &define_variable ($xlib . "_LIBADD", '', $where);
2720 }
2722 reject_var ("${xlib}_LDADD",
2723 "use `${xlib}_LIBADD', not `${xlib}_LDADD'");
2726 my $linker = &handle_source_transform ($xlib, $onelib, $obj, $where,
2727 NONLIBTOOL => 0, LIBTOOL => 1);
2729 # Determine program to use for link.
2730 my $xlink = &define_per_target_linker_variable ($linker, $xlib);
2732 my $rpathvar = "am_${xlib}_rpath";
2733 my $rpath = "\$($rpathvar)";
2734 foreach my $rcond ($instconds{$onelib}->conds)
2735 {
2736 my $val;
2737 if ($instdirs{$onelib}{$rcond} eq 'EXTRA'
2738 || $instdirs{$onelib}{$rcond} eq 'noinst'
2739 || $instdirs{$onelib}{$rcond} eq 'check')
2740 {
2741 # It's an EXTRA_ library, so we can't specify -rpath,
2742 # because we don't know where the library will end up.
2743 # The user probably knows, but generally speaking automake
2744 # doesn't -- and in fact configure could decide
2745 # dynamically between two different locations.
2746 $val = '';
2747 }
2748 else
2749 {
2750 $val = ('-rpath $(' . $instdirs{$onelib}{$rcond} . 'dir)');
2751 }
2752 if ($rcond->true)
2753 {
2754 # If $rcond is true there is only one condition and
2755 # there is no point defining an helper variable.
2756 $rpath = $val;
2757 }
2758 else
2759 {
2760 define_pretty_variable ($rpathvar, $rcond, INTERNAL, $val);
2761 }
2762 }
2764 # If the resulting library lies into a subdirectory,
2765 # make sure this directory will exist.
2766 my $dirstamp = require_build_directory_maybe ($onelib);
2768 # Remember to cleanup .libs/ in this directory.
2769 my $dirname = dirname $onelib;
2770 $libtool_clean_directories{$dirname} = 1;
2772 $output_rules .= &file_contents ('ltlibrary',
2773 $where,
2774 LTLIBRARY => $onelib,
2775 XLTLIBRARY => $xlib,
2776 RPATH => $rpath,
2777 XLINK => $xlink,
2778 DIRSTAMP => $dirstamp);
2779 if ($seen_libobjs)
2780 {
2781 if (var ($xlib . '_LIBADD'))
2782 {
2783 &check_libobjs_sources ($xlib, $xlib . '_LIBADD');
2784 }
2785 }
2786 }
2787 }
2789 # See if any _SOURCES variable were misspelled.
2790 sub check_typos ()
2791 {
2792 # It is ok if the user sets this particular variable.
2793 set_seen 'AM_LDFLAGS';
2795 foreach my $primary ('SOURCES', 'LIBADD', 'LDADD', 'LDFLAGS', 'DEPENDENCIES')
2796 {
2797 foreach my $var (variables $primary)
2798 {
2799 my $varname = $var->name;
2800 # A configure variable is always legitimate.
2801 next if exists $configure_vars{$varname};
2803 for my $cond ($var->conditions->conds)
2804 {
2805 $varname =~ /^(?:nobase_)?(?:dist_|nodist_)?(.*)_[[:alnum:]]+$/;
2806 msg_var ('syntax', $var, "variable `$varname' is defined but no"
2807 . " program or\nlibrary has `$1' as canonic name"
2808 . " (possible typo)")
2809 unless $var->rdef ($cond)->seen;
2810 }
2811 }
2812 }
2813 }
2816 # Handle scripts.
2817 sub handle_scripts
2818 {
2819 # NOTE we no longer automatically clean SCRIPTS, because it is
2820 # useful to sometimes distribute scripts verbatim. This happens
2821 # e.g. in Automake itself.
2822 &am_install_var ('-candist', 'scripts', 'SCRIPTS',
2823 'bin', 'sbin', 'libexec', 'pkgdata',
2824 'noinst', 'check');
2825 }
2830 ## ------------------------ ##
2831 ## Handling Texinfo files. ##
2832 ## ------------------------ ##
2834 # ($OUTFILE, $VFILE, @CLEAN_FILES)
2835 # &scan_texinfo_file ($FILENAME)
2836 # ------------------------------
2837 # $OUTFILE - name of the info file produced by $FILENAME.
2838 # $VFILE - name of the version.texi file used (undef if none).
2839 # @CLEAN_FILES - list of byproducts (indexes etc.)
2840 sub scan_texinfo_file ($)
2841 {
2842 my ($filename) = @_;
2844 # Some of the following extensions are always created, no matter
2845 # whether indexes are used or not. Other (like cps, fns, ... pgs)
2846 # are only created when they are used. We used to scan $FILENAME
2847 # for their use, but that is not enough: they could be used in
2848 # included files. We can't scan included files because we don't
2849 # know the include path. Therefore we always erase these files, no
2850 # matter whether they are used or not.
2851 #
2852 # (tmp is only created if an @macro is used and a certain e-TeX
2853 # feature is not available.)
2854 my %clean_suffixes =
2855 map { $_ => 1 } (qw(aux log toc tmp
2856 cp cps
2857 fn fns
2858 ky kys
2859 vr vrs
2860 tp tps
2861 pg pgs)); # grep 'new.*index' texinfo.tex
2863 my $texi = new Automake::XFile "< $filename";
2864 verb "reading $filename";
2866 my ($outfile, $vfile);
2867 while ($_ = $texi->getline)
2868 {
2869 if (/^\@setfilename +(\S+)/)
2870 {
2871 # Honor only the first @setfilename. (It's possible to have
2872 # more occurrences later if the manual shows examples of how
2873 # to use @setfilename...)
2874 next if $outfile;
2876 $outfile = $1;
2877 if ($outfile =~ /\.(.+)$/ && $1 ne 'info')
2878 {
2879 error ("$filename:$.",
2880 "output `$outfile' has unrecognized extension");
2881 return;
2882 }
2883 }
2884 # A "version.texi" file is actually any file whose name matches
2885 # "vers*.texi".
2886 elsif (/^\@include\s+(vers[^.]*\.texi)\s*$/)
2887 {
2888 $vfile = $1;
2889 }
2891 # Try to find new or unused indexes.
2893 # Creating a new category of index.
2894 elsif (/^\@def(code)?index (\w+)/)
2895 {
2896 $clean_suffixes{$2} = 1;
2897 $clean_suffixes{"$2s"} = 1;
2898 }
2900 # Merging an index into an another.
2901 elsif (/^\@syn(code)?index (\w+) (\w+)/)
2902 {
2903 delete $clean_suffixes{"$2s"};
2904 $clean_suffixes{"$3s"} = 1;
2905 }
2907 }
2909 if (! $outfile)
2910 {
2911 err_am "`$filename' missing \@setfilename";
2912 return;
2913 }
2915 my $infobase = basename ($filename);
2916 $infobase =~ s/\.te?xi(nfo)?$//;
2917 return ($outfile, $vfile,
2918 map { "$infobase.$_" } (sort keys %clean_suffixes));
2919 }
2922 # ($DIRSTAMP, @CLEAN_FILES)
2923 # output_texinfo_build_rules ($SOURCE, $DEST, $INSRC, @DEPENDENCIES)
2924 # ------------------------------------------------------------------
2925 # SOURCE - the source Texinfo file
2926 # DEST - the destination Info file
2927 # INSRC - wether DEST should be built in the source tree
2928 # DEPENDENCIES - known dependencies
2929 sub output_texinfo_build_rules ($$$@)
2930 {
2931 my ($source, $dest, $insrc, @deps) = @_;
2933 # Split `a.texi' into `a' and `.texi'.
2934 my ($spfx, $ssfx) = ($source =~ /^(.*?)(\.[^.]*)?$/);
2935 my ($dpfx, $dsfx) = ($dest =~ /^(.*?)(\.[^.]*)?$/);
2937 $ssfx ||= "";
2938 $dsfx ||= "";
2940 # We can output two kinds of rules: the "generic" rules use Make
2941 # suffix rules and are appropriate when $source and $dest do not lie
2942 # in a sub-directory; the "specific" rules are needed in the other
2943 # case.
2944 #
2945 # The former are output only once (this is not really apparent here,
2946 # but just remember that some logic deeper in Automake will not
2947 # output the same rule twice); while the later need to be output for
2948 # each Texinfo source.
2949 my $generic;
2950 my $makeinfoflags;
2951 my $sdir = dirname $source;
2952 if ($sdir eq '.' && dirname ($dest) eq '.')
2953 {
2954 $generic = 1;
2955 $makeinfoflags = '-I $(srcdir)';
2956 }
2957 else
2958 {
2959 $generic = 0;
2960 $makeinfoflags = "-I $sdir -I \$(srcdir)/$sdir";
2961 }
2963 # A directory can contain two kinds of info files: some built in the
2964 # source tree, and some built in the build tree. The rules are
2965 # different in each case. However we cannot output two different
2966 # set of generic rules. Because in-source builds are more usual, we
2967 # use generic rules in this case and fall back to "specific" rules
2968 # for build-dir builds. (It should not be a problem to invert this
2969 # if needed.)
2970 $generic = 0 unless $insrc;
2972 # We cannot use a suffix rule to build info files with an empty
2973 # extension. Otherwise we would output a single suffix inference
2974 # rule, with separate dependencies, as in
2975 #
2976 # .texi:
2977 # $(MAKEINFO) ...
2978 # foo.info: foo.texi
2979 #
2980 # which confuse Solaris make. (See the Autoconf manual for
2981 # details.) Therefore we use a specific rule in this case. This
2982 # applies to info files only (dvi and pdf files always have an
2983 # extension).
2984 my $generic_info = ($generic && $dsfx) ? 1 : 0;
2986 # If the resulting file lie into a subdirectory,
2987 # make sure this directory will exist.
2988 my $dirstamp = require_build_directory_maybe ($dest);
2990 my $dipfx = ($insrc ? '$(srcdir)/' : '') . $dpfx;
2992 $output_rules .= file_contents ('texibuild',
2993 new Automake::Location,
2994 DEPS => "@deps",
2995 DEST_PREFIX => $dpfx,
2996 DEST_INFO_PREFIX => $dipfx,
2997 DEST_SUFFIX => $dsfx,
2998 DIRSTAMP => $dirstamp,
2999 GENERIC => $generic,
3000 GENERIC_INFO => $generic_info,
3001 INSRC => $insrc,
3002 MAKEINFOFLAGS => $makeinfoflags,
3003 SOURCE => ($generic
3004 ? '$<' : $source),
3005 SOURCE_INFO => ($generic_info
3006 ? '$<' : $source),
3007 SOURCE_REAL => $source,
3008 SOURCE_SUFFIX => $ssfx,
3009 );
3010 return ($dirstamp, "$dpfx.dvi", "$dpfx.pdf", "$dpfx.ps", "$dpfx.html");
3011 }
3014 # $TEXICLEANS
3015 # handle_texinfo_helper ($info_texinfos)
3016 # --------------------------------------
3017 # Handle all Texinfo source; helper for handle_texinfo.
3018 sub handle_texinfo_helper ($)
3019 {
3020 my ($info_texinfos) = @_;
3021 my (@infobase, @info_deps_list, @texi_deps);
3022 my %versions;
3023 my $done = 0;
3024 my @texi_cleans;
3026 # Build a regex matching user-cleaned files.
3027 my $d = var 'DISTCLEANFILES';
3028 my $c = var 'CLEANFILES';
3029 my @f = ();
3030 push @f, $d->value_as_list_recursive (inner_expand => 1) if $d;
3031 push @f, $c->value_as_list_recursive (inner_expand => 1) if $c;
3032 @f = map { s|[^A-Za-z_0-9*\[\]\-]|\\$&|g; s|\*|[^/]*|g; $_; } @f;
3033 my $user_cleaned_files = '^(?:' . join ('|', @f) . ')$';
3035 foreach my $texi
3036 ($info_texinfos->value_as_list_recursive (inner_expand => 1))
3037 {
3038 my $infobase = $texi;
3039 $infobase =~ s/\.(txi|texinfo|texi)$//;
3041 if ($infobase eq $texi)
3042 {
3043 # FIXME: report line number.
3044 err_am "texinfo file `$texi' has unrecognized extension";
3045 next;
3046 }
3048 push @infobase, $infobase;
3050 # If 'version.texi' is referenced by input file, then include
3051 # automatic versioning capability.
3052 my ($out_file, $vtexi, @clean_files) =
3053 scan_texinfo_file ("$relative_dir/$texi")
3054 or next;
3055 push (@texi_cleans, @clean_files);
3057 # If the Texinfo source is in a subdirectory, create the
3058 # resulting info in this subdirectory. If it is in the current
3059 # directory, try hard to not prefix "./" because it breaks the
3060 # generic rules.
3061 my $outdir = dirname ($texi) . '/';
3062 $outdir = "" if $outdir eq './';
3063 $out_file = $outdir . $out_file;
3065 # Until Automake 1.6.3, .info files were built in the
3066 # source tree. This was an obstacle to the support of
3067 # non-distributed .info files, and non-distributed .texi
3068 # files.
3069 #
3070 # * Non-distributed .texi files is important in some packages
3071 # where .texi files are built at make time, probably using
3072 # other binaries built in the package itself, maybe using
3073 # tools or information found on the build host. Because
3074 # these files are not distributed they are always rebuilt
3075 # at make time; they should therefore not lie in the source
3076 # directory. One plan was to support this using
3077 # nodist_info_TEXINFOS or something similar. (Doing this
3078 # requires some sanity checks. For instance Automake should
3079 # not allow:
3080 # dist_info_TEXINFO = foo.texi
3081 # nodist_foo_TEXINFO = included.texi
3082 # because a distributed file should never depend on a
3083 # non-distributed file.)
3084 #
3085 # * If .texi files are not distributed, then .info files should
3086 # not be distributed either. There are also cases where one
3087 # want to distribute .texi files, but do not want to
3088 # distribute the .info files. For instance the Texinfo package
3089 # distributes the tool used to build these files; it would
3090 # be a waste of space to distribute them. It's not clear
3091 # which syntax we should use to indicate that .info files should
3092 # not be distributed. Akim Demaille suggested that eventually
3093 # we switch to a new syntax:
3094 # | Maybe we should take some inspiration from what's already
3095 # | done in the rest of Automake. Maybe there is too much
3096 # | syntactic sugar here, and you want
3097 # | nodist_INFO = bar.info
3098 # | dist_bar_info_SOURCES = bar.texi
3099 # | bar_texi_DEPENDENCIES = foo.texi
3100 # | with a bit of magic to have bar.info represent the whole
3101 # | bar*info set. That's a lot more verbose that the current
3102 # | situation, but it is # not new, hence the user has less
3103 # | to learn.
3104 # |
3105 # | But there is still too much room for meaningless specs:
3106 # | nodist_INFO = bar.info
3107 # | dist_bar_info_SOURCES = bar.texi
3108 # | dist_PS = bar.ps something-written-by-hand.ps
3109 # | nodist_bar_ps_SOURCES = bar.texi
3110 # | bar_texi_DEPENDENCIES = foo.texi
3111 # | here bar.texi is dist_ in line 2, and nodist_ in 4.
3112 #
3113 # Back to the point, it should be clear that in order to support
3114 # non-distributed .info files, we need to build them in the
3115 # build tree, not in the source tree (non-distributed .texi
3116 # files are less of a problem, because we do not output build
3117 # rules for them). In Automake 1.7 .info build rules have been
3118 # largely cleaned up so that .info files get always build in the
3119 # build tree, even when distributed. The idea was that
3120 # (1) if during a VPATH build the .info file was found to be
3121 # absent or out-of-date (in the source tree or in the
3122 # build tree), Make would rebuild it in the build tree.
3123 # If an up-to-date source-tree of the .info file existed,
3124 # make would not rebuild it in the build tree.
3125 # (2) having two copies of .info files, one in the source tree
3126 # and one (newer) in the build tree is not a problem
3127 # because `make dist' always pick files in the build tree
3128 # first.
3129 # However it turned out the be a bad idea for several reasons:
3130 # * Tru64, OpenBSD, and FreeBSD (not NetBSD) Make do not behave
3131 # like GNU Make on point (1) above. These implementations
3132 # of Make would always rebuild .info files in the build
3133 # tree, even if such files were up to date in the source
3134 # tree. Consequently, it was impossible to perform a VPATH
3135 # build of a package containing Texinfo files using these
3136 # Make implementations.
3137 # (Refer to the Autoconf Manual, section "Limitation of
3138 # Make", paragraph "VPATH", item "target lookup", for
3139 # an account of the differences between these
3140 # implementations.)
3141 # * The GNU Coding Standards require these files to be built
3142 # in the source-tree (when they are distributed, that is).
3143 # * Keeping a fresher copy of distributed files in the
3144 # build tree can be annoying during development because
3145 # - if the files is kept under CVS, you really want it
3146 # to be updated in the source tree
3147 # - it is confusing that `make distclean' does not erase
3148 # all files in the build tree.
3149 #
3150 # Consequently, starting with Automake 1.8, .info files are
3151 # built in the source tree again. Because we still plan to
3152 # support non-distributed .info files at some point, we
3153 # have a single variable ($INSRC) that controls whether
3154 # the current .info file must be built in the source tree
3155 # or in the build tree. Actually this variable is switched
3156 # off for .info files that appear to be cleaned; this is
3157 # for backward compatibility with package such as Texinfo,
3158 # which do things like
3159 # info_TEXINFOS = texinfo.txi info-stnd.texi info.texi
3160 # DISTCLEANFILES = texinfo texinfo-* info*.info*
3161 # # Do not create info files for distribution.
3162 # dist-info:
3163 # in order not to distribute .info files.
3164 my $insrc = ($out_file =~ $user_cleaned_files) ? 0 : 1;
3166 my $soutdir = '$(srcdir)/' . $outdir;
3167 $outdir = $soutdir if $insrc;
3169 # If user specified file_TEXINFOS, then use that as explicit
3170 # dependency list.
3171 @texi_deps = ();
3172 push (@texi_deps, "$soutdir$vtexi") if $vtexi;
3174 my $canonical = canonicalize ($infobase);
3175 if (var ($canonical . "_TEXINFOS"))
3176 {
3177 push (@texi_deps, '$(' . $canonical . '_TEXINFOS)');
3178 push_dist_common ('$(' . $canonical . '_TEXINFOS)');
3179 }
3181 my ($dirstamp, @cfiles) =
3182 output_texinfo_build_rules ($texi, $out_file, $insrc, @texi_deps);
3183 push (@texi_cleans, @cfiles);
3185 push (@info_deps_list, $out_file);
3187 # If a vers*.texi file is needed, emit the rule.
3188 if ($vtexi)
3189 {
3190 err_am ("`$vtexi', included in `$texi', "
3191 . "also included in `$versions{$vtexi}'")
3192 if defined $versions{$vtexi};
3193 $versions{$vtexi} = $texi;
3195 # We number the stamp-vti files. This is doable since the
3196 # actual names don't matter much. We only number starting
3197 # with the second one, so that the common case looks nice.
3198 my $vti = ($done ? $done : 'vti');
3199 ++$done;
3201 # This is ugly, but it is our historical practice.
3202 if ($config_aux_dir_set_in_configure_ac)
3203 {
3204 require_conf_file_with_macro (TRUE, 'info_TEXINFOS', FOREIGN,
3205 'mdate-sh');
3206 }
3207 else
3208 {
3209 require_file_with_macro (TRUE, 'info_TEXINFOS',
3210 FOREIGN, 'mdate-sh');
3211 }
3213 my $conf_dir;
3214 if ($config_aux_dir_set_in_configure_ac)
3215 {
3216 $conf_dir = "$am_config_aux_dir/";
3217 }
3218 else
3219 {
3220 $conf_dir = '$(srcdir)/';
3221 }
3222 $output_rules .= file_contents ('texi-vers',
3223 new Automake::Location,
3224 TEXI => $texi,
3225 VTI => $vti,
3226 STAMPVTI => "${soutdir}stamp-$vti",
3227 VTEXI => "$soutdir$vtexi",
3228 MDDIR => $conf_dir,
3229 DIRSTAMP => $dirstamp);
3230 }
3231 }
3233 # Handle location of texinfo.tex.
3234 my $need_texi_file = 0;
3235 my $texinfodir;
3236 if (var ('TEXINFO_TEX'))
3237 {
3238 # The user defined TEXINFO_TEX so assume he knows what he is
3239 # doing.
3240 $texinfodir = ('$(srcdir)/'
3241 . dirname (variable_value ('TEXINFO_TEX')));
3242 }
3243 elsif (option 'cygnus')
3244 {
3245 $texinfodir = '$(top_srcdir)/../texinfo';
3246 define_variable ('TEXINFO_TEX', "$texinfodir/texinfo.tex", INTERNAL);
3247 }
3248 elsif ($config_aux_dir_set_in_configure_ac)
3249 {
3250 $texinfodir = $am_config_aux_dir;
3251 define_variable ('TEXINFO_TEX', "$texinfodir/texinfo.tex", INTERNAL);
3252 $need_texi_file = 2; # so that we require_conf_file later
3253 }
3254 else
3255 {
3256 $texinfodir = '$(srcdir)';
3257 $need_texi_file = 1;
3258 }
3259 define_variable ('am__TEXINFO_TEX_DIR', $texinfodir, INTERNAL);
3261 push (@dist_targets, 'dist-info');
3263 if (! option 'no-installinfo')
3264 {
3265 # Make sure documentation is made and installed first. Use
3266 # $(INFO_DEPS), not 'info', because otherwise recursive makes
3267 # get run twice during "make all".
3268 unshift (@all, '$(INFO_DEPS)');
3269 }
3271 define_files_variable ("DVIS", @infobase, 'dvi', INTERNAL);
3272 define_files_variable ("PDFS", @infobase, 'pdf', INTERNAL);
3273 define_files_variable ("PSS", @infobase, 'ps', INTERNAL);
3274 define_files_variable ("HTMLS", @infobase, 'html', INTERNAL);
3276 # This next isn't strictly needed now -- the places that look here
3277 # could easily be changed to look in info_TEXINFOS. But this is
3278 # probably better, in case noinst_TEXINFOS is ever supported.
3279 define_variable ("TEXINFOS", variable_value ('info_TEXINFOS'), INTERNAL);
3281 # Do some error checking. Note that this file is not required
3282 # when in Cygnus mode; instead we defined TEXINFO_TEX explicitly
3283 # up above.
3284 if ($need_texi_file && ! option 'no-texinfo.tex')
3285 {
3286 if ($need_texi_file > 1)
3287 {
3288 require_conf_file_with_macro (TRUE, 'info_TEXINFOS', FOREIGN,
3289 'texinfo.tex');
3290 }
3291 else
3292 {
3293 require_file_with_macro (TRUE, 'info_TEXINFOS', FOREIGN,
3294 'texinfo.tex');
3295 }
3296 }
3298 return makefile_wrap ("", "\t ", @texi_cleans);
3299 }
3302 # handle_texinfo ()
3303 # -----------------
3304 # Handle all Texinfo source.
3305 sub handle_texinfo ()
3306 {
3307 reject_var 'TEXINFOS', "`TEXINFOS' is an anachronism; use `info_TEXINFOS'";
3308 # FIXME: I think this is an obsolete future feature name.
3309 reject_var 'html_TEXINFOS', "HTML generation not yet supported";
3311 my $info_texinfos = var ('info_TEXINFOS');
3312 my $texiclean = "";
3313 if ($info_texinfos)
3314 {
3315 $texiclean = handle_texinfo_helper ($info_texinfos);
3316 }
3317 $output_rules .= file_contents ('texinfos',
3318 new Automake::Location,
3319 TEXICLEAN => $texiclean,
3320 'LOCAL-TEXIS' => !!$info_texinfos);
3321 }
3324 # Handle any man pages.
3325 sub handle_man_pages
3326 {
3327 reject_var 'MANS', "`MANS' is an anachronism; use `man_MANS'";
3329 # Find all the sections in use. We do this by first looking for
3330 # "standard" sections, and then looking for any additional
3331 # sections used in man_MANS.
3332 my (%sections, %vlist);
3333 # We handle nodist_ for uniformity. man pages aren't distributed
3334 # by default so it isn't actually very important.
3335 foreach my $pfx ('', 'dist_', 'nodist_')
3336 {
3337 # Add more sections as needed.
3338 foreach my $section ('0'..'9', 'n', 'l')
3339 {
3340 my $varname = $pfx . 'man' . $section . '_MANS';
3341 if (var ($varname))
3342 {
3343 $sections{$section} = 1;
3344 $varname = '$(' . $varname . ')';
3345 $vlist{$varname} = 1;
3347 &push_dist_common ($varname)
3348 if $pfx eq 'dist_';
3349 }
3350 }
3352 my $varname = $pfx . 'man_MANS';
3353 my $var = var ($varname);
3354 if ($var)
3355 {
3356 foreach ($var->value_as_list_recursive)
3357 {
3358 # A page like `foo.1c' goes into man1dir.
3359 if (/\.([0-9a-z])([a-z]*)$/)
3360 {
3361 $sections{$1} = 1;
3362 }
3363 }
3365 $varname = '$(' . $varname . ')';
3366 $vlist{$varname} = 1;
3367 &push_dist_common ($varname)
3368 if $pfx eq 'dist_';
3369 }
3370 }
3372 return unless %sections;
3374 # Now for each section, generate an install and uninstall rule.
3375 # Sort sections so output is deterministic.
3376 foreach my $section (sort keys %sections)
3377 {
3378 $output_rules .= &file_contents ('mans',
3379 new Automake::Location,
3380 SECTION => $section);
3381 }
3383 my @mans = sort keys %vlist;
3384 $output_vars .= file_contents ('mans-vars',
3385 new Automake::Location,
3386 MANS => "@mans");
3388 push (@all, '$(MANS)')
3389 unless option 'no-installman';
3390 }
3392 # Handle DATA variables.
3393 sub handle_data
3394 {
3395 &am_install_var ('-noextra', '-candist', 'data', 'DATA',
3396 'data', 'dataroot', 'dvi', 'html', 'pdf', 'ps',
3397 'sysconf', 'sharedstate', 'localstate',
3398 'pkgdata', 'lisp', 'noinst', 'check');
3399 }
3401 # Handle TAGS.
3402 sub handle_tags
3403 {
3404 my @tag_deps = ();
3405 my @ctag_deps = ();
3406 if (var ('SUBDIRS'))
3407 {
3408 $output_rules .= ("tags-recursive:\n"
3409 . "\tlist=\'\$(SUBDIRS)\'; for subdir in \$\$list; do \\\n"
3410 # Never fail here if a subdir fails; it
3411 # isn't important.
3412 . "\t test \"\$\$subdir\" = . || (cd \$\$subdir"
3413 . " && \$(MAKE) \$(AM_MAKEFLAGS) tags); \\\n"
3414 . "\tdone\n");
3415 push (@tag_deps, 'tags-recursive');
3416 &depend ('.PHONY', 'tags-recursive');
3418 $output_rules .= ("ctags-recursive:\n"
3419 . "\tlist=\'\$(SUBDIRS)\'; for subdir in \$\$list; do \\\n"
3420 # Never fail here if a subdir fails; it
3421 # isn't important.
3422 . "\t test \"\$\$subdir\" = . || (cd \$\$subdir"
3423 . " && \$(MAKE) \$(AM_MAKEFLAGS) ctags); \\\n"
3424 . "\tdone\n");
3425 push (@ctag_deps, 'ctags-recursive');
3426 &depend ('.PHONY', 'ctags-recursive');
3427 }
3429 if (&saw_sources_p (1)
3430 || var ('ETAGS_ARGS')
3431 || @tag_deps)
3432 {
3433 my @config;
3434 foreach my $spec (@config_headers)
3435 {
3436 my ($out, @ins) = split_config_file_spec ($spec);
3437 foreach my $in (@ins)
3438 {
3439 # If the config header source is in this directory,
3440 # require it.
3441 push @config, basename ($in)
3442 if $relative_dir eq dirname ($in);
3443 }
3444 }
3445 $output_rules .= &file_contents ('tags',
3446 new Automake::Location,
3447 CONFIG => "@config",
3448 TAGSDIRS => "@tag_deps",
3449 CTAGSDIRS => "@ctag_deps");
3451 set_seen 'TAGS_DEPENDENCIES';
3452 }
3453 elsif (reject_var ('TAGS_DEPENDENCIES',
3454 "doesn't make sense to define `TAGS_DEPENDENCIES'"
3455 . "without\nsources or `ETAGS_ARGS'"))
3456 {
3457 }
3458 else
3459 {
3460 # Every Makefile must define some sort of TAGS rule.
3461 # Otherwise, it would be possible for a top-level "make TAGS"
3462 # to fail because some subdirectory failed.
3463 $output_rules .= "tags: TAGS\nTAGS:\n\n";
3464 # Ditto ctags.
3465 $output_rules .= "ctags: CTAGS\nCTAGS:\n\n";
3466 }
3467 }
3469 # Handle multilib support.
3470 sub handle_multilib
3471 {
3472 if ($seen_multilib && $relative_dir eq '.')
3473 {
3474 $output_rules .= &file_contents ('multilib', new Automake::Location);
3475 push (@all, 'all-multi');
3476 }
3477 }
3480 # user_phony_rule ($NAME)
3481 # -----------------------
3482 # Return false if rule $NAME does not exist. Otherwise,
3483 # declare it as phony, complete its definition (in case it is
3484 # conditional), and return its Automake::Rule instance.
3485 sub user_phony_rule ($)
3486 {
3487 my ($name) = @_;
3488 my $rule = rule $name;
3489 if ($rule)
3490 {
3491 depend ('.PHONY', $name);
3492 # Define $NAME in all condition where it is not already defined,
3493 # so that it is always OK to depend on $NAME.
3494 for my $c ($rule->not_always_defined_in_cond (TRUE)->conds)
3495 {
3496 Automake::Rule::define ($name, 'internal', RULE_AUTOMAKE,
3497 $c, INTERNAL);
3498 $output_rules .= $c->subst_string . "$name:\n";
3499 }
3500 }
3501 return $rule;
3502 }
3505 # $BOOLEAN
3506 # &for_dist_common ($A, $B)
3507 # -------------------------
3508 # Subroutine for &handle_dist: sort files to dist.
3509 #
3510 # We put README first because it then becomes easier to make a
3511 # Usenet-compliant shar file (in these, README must be first).
3512 #
3513 # FIXME: do more ordering of files here.
3514 sub for_dist_common
3515 {
3516 return 0
3517 if $a eq $b;
3518 return -1
3519 if $a eq 'README';
3520 return 1
3521 if $b eq 'README';
3522 return $a cmp $b;
3523 }
3525 # fill_dist_dirs(@FILES)
3526 # ----------------------
3527 # Record in %dist_dirs the directory part of any file passed.
3528 sub fill_dist_dirs (@)
3529 {
3530 my @copy = @_;
3531 foreach (@copy)
3532 {
3533 s/\$\(top_srcdir\)/$topsrcdir/;
3534 s/\$\(srcdir\)/./;
3535 # Strip any leading `./'.
3536 s,^(:?\./+)*,,;
3537 next unless s,/+[^/]+$,,;
3538 $dist_dirs{$_} = 1
3539 unless $_ eq '.';
3540 }
3541 }
3543 # handle_dist
3544 # -----------
3545 # Handle 'dist' target.
3546 sub handle_dist ()
3547 {
3548 # Substutions for distdit.am
3549 my %transform;
3551 # Define DIST_SUBDIRS. This must always be done, regardless of the
3552 # no-dist setting: target like `distclean' or `maintainer-clean' use it.
3553 my $subdirs = var ('SUBDIRS');
3554 if ($subdirs)
3555 {
3556 # If SUBDIRS is conditionally defined, then set DIST_SUBDIRS
3557 # to all possible directories, and use it. If DIST_SUBDIRS is
3558 # defined, just use it.
3560 # Note that we check DIST_SUBDIRS first on purpose, so that
3561 # we don't call has_conditional_contents for now reason.
3562 # (In the past one project used so many conditional subdirectories
3563 # that calling has_conditional_contents on SUBDIRS caused
3564 # automake to grow to 150Mb -- this should not happen with
3565 # the current implementation of has_conditional_contents,
3566 # but it's more efficient to avoid the call anyway.)
3567 if (var ('DIST_SUBDIRS'))
3568 {
3569 }
3570 elsif ($subdirs->has_conditional_contents)
3571 {
3572 define_pretty_variable
3573 ('DIST_SUBDIRS', TRUE, INTERNAL,
3574 uniq ($subdirs->value_as_list_recursive));
3575 }
3576 else
3577 {
3578 # We always define this because that is what `distclean'
3579 # wants.
3580 define_pretty_variable ('DIST_SUBDIRS', TRUE, INTERNAL,
3581 '$(SUBDIRS)');
3582 }
3583 }
3585 # The remaining definitions are only required when a dist target is used.
3586 return if option 'no-dist';
3588 # At least one of the archive formats must be enabled.
3589 if ($relative_dir eq '.')
3590 {
3591 my $archive_defined = option 'no-dist-gzip' ? 0 : 1;
3592 $archive_defined ||=
3593 grep { option "dist-$_" } ('shar', 'zip', 'tarZ', 'bzip2');
3594 error (option 'no-dist-gzip',
3595 "no-dist-gzip specified but no dist-* specified, "
3596 . "at least one archive format must be enabled")
3597 unless $archive_defined;
3598 }
3600 # Look for common files that should be included in distribution.
3601 # If the aux dir is set, and it does not have a Makefile.am, then
3602 # we check for these files there as well.
3603 my $check_aux = 0;
3604 if ($relative_dir eq '.'
3605 && $config_aux_dir_set_in_configure_ac)
3606 {
3607 if (! &is_make_dir ($config_aux_dir))
3608 {
3609 $check_aux = 1;
3610 }
3611 }
3612 foreach my $cfile (@common_files)
3613 {
3614 if (dir_has_case_matching_file ($relative_dir, $cfile)
3615 # The file might be absent, but if it can be built it's ok.
3616 || rule $cfile)
3617 {
3618 &push_dist_common ($cfile);
3619 }
3621 # Don't use `elsif' here because a file might meaningfully
3622 # appear in both directories.
3623 if ($check_aux && dir_has_case_matching_file ($config_aux_dir, $cfile))
3624 {
3625 &push_dist_common ("$config_aux_dir/$cfile")
3626 }
3627 }
3629 # We might copy elements from $configure_dist_common to
3630 # %dist_common if we think we need to. If the file appears in our
3631 # directory, we would have discovered it already, so we don't
3632 # check that. But if the file is in a subdir without a Makefile,
3633 # we want to distribute it here if we are doing `.'. Ugly!
3634 if ($relative_dir eq '.')
3635 {
3636 foreach my $file (split (' ' , $configure_dist_common))
3637 {
3638 push_dist_common ($file)
3639 unless is_make_dir (dirname ($file));
3640 }
3641 }
3643 # Files to distributed. Don't use ->value_as_list_recursive
3644 # as it recursively expands `$(dist_pkgdata_DATA)' etc.
3645 my @dist_common = split (' ', rvar ('DIST_COMMON')->variable_value);
3646 @dist_common = uniq (sort for_dist_common (@dist_common));
3647 variable_delete 'DIST_COMMON';
3648 define_pretty_variable ('DIST_COMMON', TRUE, INTERNAL, @dist_common);
3650 # Now that we've processed DIST_COMMON, disallow further attempts
3651 # to set it.
3652 $handle_dist_run = 1;
3654 # Scan EXTRA_DIST to see if we need to distribute anything from a
3655 # subdir. If so, add it to the list. I didn't want to do this
3656 # originally, but there were so many requests that I finally
3657 # relented.
3658 my $extra_dist = var ('EXTRA_DIST');
3659 # FIXME: This should be fixed to work with conditions. That
3660 # will require only making the entries in %dist_dirs under the
3661 # appropriate condition. This is meaningful if the nature of
3662 # the distribution should depend upon the configure options
3663 # used.
3664 fill_dist_dirs ($extra_dist->value_as_list_recursive (skip_ac_subst => 1))
3665 if $extra_dist;
3667 # We have to check DIST_COMMON for extra directories in case the
3668 # user put a source used in AC_OUTPUT into a subdir.
3669 fill_dist_dirs (rvar ('DIST_COMMON')
3670 ->value_as_list_recursive (skip_ac_subst => 1));
3672 $transform{'DISTCHECK-HOOK'} = !! rule 'distcheck-hook';
3673 $transform{'GETTEXT'} = $seen_gettext && !$seen_gettext_external;
3675 # Prepend $(distdir) to each directory given.
3676 my %rewritten = map { '$(distdir)/' . "$_" => 1 } keys %dist_dirs;
3677 $transform{'DISTDIRS'} = join (' ', sort keys %rewritten);
3679 # If the target `dist-hook' exists, make sure it is run. This
3680 # allows users to do random weird things to the distribution
3681 # before it is packaged up.
3682 push (@dist_targets, 'dist-hook')
3683 if user_phony_rule 'dist-hook';
3684 $transform{'DIST-TARGETS'} = join (' ', @dist_targets);
3686 my $flm = option ('filename-length-max');
3687 my $filename_filter = $flm ? '.' x $flm->[1] : '';
3689 $output_rules .= &file_contents ('distdir',
3690 new Automake::Location,
3691 %transform,
3692 FILENAME_FILTER => $filename_filter);
3693 }
3696 # check_directory ($NAME, $WHERE)
3697 # -------------------------------
3698 # Ensure $NAME is a directory, and that it uses sane name.
3699 # Use $WHERE as a location in the diagnostic, if any.
3700 sub check_directory ($$)
3701 {
3702 my ($dir, $where) = @_;
3704 error $where, "required directory $relative_dir/$dir does not exist"
3705 unless -d "$relative_dir/$dir";
3707 # If an `obj/' directory exists, BSD make will enter it before
3708 # reading `Makefile'. Hence the `Makefile' in the current directory
3709 # will not be read.
3710 #
3711 # % cat Makefile
3712 # all:
3713 # echo Hello
3714 # % cat obj/Makefile
3715 # all:
3716 # echo World
3717 # % make # GNU make
3718 # echo Hello
3719 # Hello
3720 # % pmake # BSD make
3721 # echo World
3722 # World
3723 msg ('portability', $where,
3724 "naming a subdirectory `obj' causes troubles with BSD make")
3725 if $dir eq 'obj';
3727 # `aux' is probably the most important of the following forbidden name,
3728 # since it's tempting to use it as an AC_CONFIG_AUX_DIR.
3729 msg ('portability', $where,
3730 "name `$dir' is reserved on W32 and DOS platforms")
3731 if grep (/^\Q$dir\E$/i, qw/aux lpt1 lpt2 lpt3 com1 com2 com3 com4 con prn/);
3732 }
3734 # check_directories_in_var ($VARIABLE)
3735 # ------------------------------------
3736 # Recursively check all items in variables $VARIABLE as directories
3737 sub check_directories_in_var ($)
3738 {
3739 my ($var) = @_;
3740 $var->traverse_recursively
3741 (sub
3742 {
3743 my ($var, $val, $cond, $full_cond) = @_;
3744 check_directory ($val, $var->rdef ($cond)->location);
3745 return ();
3746 },
3747 undef,
3748 skip_ac_subst => 1);
3749 }
3751 # &handle_subdirs ()
3752 # ------------------
3753 # Handle subdirectories.
3754 sub handle_subdirs ()
3755 {
3756 my $subdirs = var ('SUBDIRS');
3757 return
3758 unless $subdirs;
3760 check_directories_in_var $subdirs;
3762 my $dsubdirs = var ('DIST_SUBDIRS');
3763 check_directories_in_var $dsubdirs
3764 if $dsubdirs;
3766 $output_rules .= &file_contents ('subdirs', new Automake::Location);
3767 rvar ('RECURSIVE_TARGETS')->rdef (TRUE)->{'pretty'} = VAR_SORTED; # Gross!
3768 }
3771 # ($REGEN, @DEPENDENCIES)
3772 # &scan_aclocal_m4
3773 # ----------------
3774 # If aclocal.m4 creation is automated, return the list of its dependencies.
3775 sub scan_aclocal_m4 ()
3776 {
3777 my $regen_aclocal = 0;
3779 set_seen 'CONFIG_STATUS_DEPENDENCIES';
3780 set_seen 'CONFIGURE_DEPENDENCIES';
3782 if (-f 'aclocal.m4')
3783 {
3784 &define_variable ("ACLOCAL_M4", '$(top_srcdir)/aclocal.m4', INTERNAL);
3786 my $aclocal = new Automake::XFile "< aclocal.m4";
3787 my $line = $aclocal->getline;
3788 $regen_aclocal = $line =~ 'generated automatically by aclocal';
3789 }
3791 my @ac_deps = ();
3793 if (set_seen ('ACLOCAL_M4_SOURCES'))
3794 {
3795 push (@ac_deps, '$(ACLOCAL_M4_SOURCES)');
3796 msg_var ('obsolete', 'ACLOCAL_M4_SOURCES',
3797 "`ACLOCAL_M4_SOURCES' is obsolete.\n"
3798 . "It should be safe to simply remove it.");
3799 }
3801 # Note that it might be possible that aclocal.m4 doesn't exist but
3802 # should be auto-generated. This case probably isn't very
3803 # important.
3805 return ($regen_aclocal, @ac_deps);
3806 }
3809 # Helper function for substitute_ac_subst_variables.
3810 sub substitute_ac_subst_variables_worker($)
3811 {
3812 my ($token) = @_;
3813 return "\@$token\@" if var $token;
3814 return "\${$token\}";
3815 }
3817 # substitute_ac_subst_variables ($TEXT)
3818 # -------------------------------------
3819 # Replace any occurence of ${FOO} in $TEXT by @FOO@ if FOO is an AC_SUBST
3820 # variable.
3821 sub substitute_ac_subst_variables ($)
3822 {
3823 my ($text) = @_;
3824 $text =~ s/\${([^ \t=:+{}]+)}/&substitute_ac_subst_variables_worker ($1)/ge;
3825 return $text;
3826 }
3828 # @DEPENDENCIES
3829 # &prepend_srcdir (@INPUTS)
3830 # -------------------------
3831 # Prepend $(srcdir) or $(top_srcdir) to all @INPUTS. The idea is that
3832 # if an input file has a directory part the same as the current
3833 # directory, then the directory part is simply replaced by $(srcdir).
3834 # But if the directory part is different, then $(top_srcdir) is
3835 # prepended.
3836 sub prepend_srcdir (@)
3837 {
3838 my (@inputs) = @_;
3839 my @newinputs;
3841 foreach my $single (@inputs)
3842 {
3843 if (dirname ($single) eq $relative_dir)
3844 {
3845 push (@newinputs, '$(srcdir)/' . basename ($single));
3846 }
3847 else
3848 {
3849 push (@newinputs, '$(top_srcdir)/' . $single);
3850 }
3851 }
3852 return @newinputs;
3853 }
3855 # @DEPENDENCIES
3856 # rewrite_inputs_into_dependencies ($OUTPUT, @INPUTS)
3857 # ---------------------------------------------------
3858 # Compute a list of dependencies appropriate for the rebuild
3859 # rule of
3860 # AC_CONFIG_FILES($OUTPUT:$INPUT[0]:$INPUTS[1]:...)
3861 # Also distribute $INPUTs which are not build by another AC_CONFIG_FILES.
3862 sub rewrite_inputs_into_dependencies ($@)
3863 {
3864 my ($file, @inputs) = @_;
3865 my @res = ();
3867 for my $i (@inputs)
3868 {
3869 # We cannot create dependencies on shell variables.
3870 next if (substitute_ac_subst_variables $i) =~ /\$/;
3872 if (exists $ac_config_files_location{$i})
3873 {
3874 my $di = dirname $i;
3875 if ($di eq $relative_dir)
3876 {
3877 $i = basename $i;
3878 }
3879 # In the top-level Makefile we do not use $(top_builddir), because
3880 # we are already there, and since the targets are built without
3881 # a $(top_builddir), it helps BSD Make to match them with
3882 # dependencies.
3883 elsif ($relative_dir ne '.')
3884 {
3885 $i = '$(top_builddir)/' . $i;
3886 }
3887 }
3888 else
3889 {
3890 msg ('error', $ac_config_files_location{$file},
3891 "required file `$i' not found")
3892 unless $i =~ /\$/ || exists $output_files{$i} || -f $i;
3893 ($i) = prepend_srcdir ($i);
3894 push_dist_common ($i);
3895 }
3896 push @res, $i;
3897 }
3898 return @res;
3899 }
3903 # &handle_configure ($MAKEFILE_AM, $MAKEFILE_IN, $MAKEFILE, @INPUTS)
3904 # ------------------------------------------------------------------
3905 # Handle remaking and configure stuff.
3906 # We need the name of the input file, to do proper remaking rules.
3907 sub handle_configure ($$$@)
3908 {
3909 my ($makefile_am, $makefile_in, $makefile, @inputs) = @_;
3911 prog_error 'empty @inputs'
3912 unless @inputs;
3914 my ($rel_makefile_am, $rel_makefile_in) = prepend_srcdir ($makefile_am,
3915 $makefile_in);
3916 my $rel_makefile = basename $makefile;
3918 my $colon_infile = ':' . join (':', @inputs);
3919 $colon_infile = '' if $colon_infile eq ":$makefile.in";
3920 my @rewritten = rewrite_inputs_into_dependencies ($makefile, @inputs);
3921 my ($regen_aclocal_m4, @aclocal_m4_deps) = scan_aclocal_m4;
3922 define_pretty_variable ('am__aclocal_m4_deps', TRUE, INTERNAL,
3923 @configure_deps, @aclocal_m4_deps,
3924 '$(top_srcdir)/' . $configure_ac);
3925 my @configuredeps = ('$(am__aclocal_m4_deps)', '$(CONFIGURE_DEPENDENCIES)');
3926 push @configuredeps, '$(ACLOCAL_M4)' if -f 'aclocal.m4';
3927 define_pretty_variable ('am__configure_deps', TRUE, INTERNAL,
3928 @configuredeps);
3930 $output_rules .= file_contents
3931 ('configure',
3932 new Automake::Location,
3933 MAKEFILE => $rel_makefile,
3934 'MAKEFILE-DEPS' => "@rewritten",
3935 'CONFIG-MAKEFILE' => ($relative_dir eq '.') ? '$@' : '$(subdir)/$@',
3936 'MAKEFILE-IN' => $rel_makefile_in,
3937 'MAKEFILE-IN-DEPS' => "@include_stack",
3938 'MAKEFILE-AM' => $rel_makefile_am,
3939 STRICTNESS => global_option 'cygnus'
3940 ? 'cygnus' : $strictness_name,
3941 'USE-DEPS' => global_option 'no-dependencies'
3942 ? ' --ignore-deps' : '',
3943 'MAKEFILE-AM-SOURCES' => "$makefile$colon_infile",
3944 'REGEN-ACLOCAL-M4' => $regen_aclocal_m4);
3946 if ($relative_dir eq '.')
3947 {
3948 &push_dist_common ('acconfig.h')
3949 if -f 'acconfig.h';
3950 }
3952 # If we have a configure header, require it.
3953 my $hdr_index = 0;
3954 my @distclean_config;
3955 foreach my $spec (@config_headers)
3956 {
3957 $hdr_index += 1;
3958 # $CONFIG_H_PATH: config.h from top level.
3959 my ($config_h_path, @ins) = split_config_file_spec ($spec);
3960 my $config_h_dir = dirname ($config_h_path);
3962 # If the header is in the current directory we want to build
3963 # the header here. Otherwise, if we're at the topmost
3964 # directory and the header's directory doesn't have a
3965 # Makefile, then we also want to build the header.
3966 if ($relative_dir eq $config_h_dir
3967 || ($relative_dir eq '.' && ! &is_make_dir ($config_h_dir)))
3968 {
3969 my ($cn_sans_dir, $stamp_dir);
3970 if ($relative_dir eq $config_h_dir)
3971 {
3972 $cn_sans_dir = basename ($config_h_path);
3973 $stamp_dir = '';
3974 }
3975 else
3976 {
3977 $cn_sans_dir = $config_h_path;
3978 if ($config_h_dir eq '.')
3979 {
3980 $stamp_dir = '';
3981 }
3982 else
3983 {
3984 $stamp_dir = $config_h_dir . '/';
3985 }
3986 }
3988 # This will also distribute all inputs.
3989 @ins = rewrite_inputs_into_dependencies ($config_h_path, @ins);
3991 # Cannot define rebuild rules for filenames with shell variables.
3992 next if (substitute_ac_subst_variables $config_h_path) =~ /\$/;
3994 # Header defined in this directory.
3995 my @files;
3996 if (-f $config_h_path . '.top')
3997 {
3998 push (@files, "$cn_sans_dir.top");
3999 }
4000 if (-f $config_h_path . '.bot')
4001 {
4002 push (@files, "$cn_sans_dir.bot");
4003 }
4005 push_dist_common (@files);
4007 # For now, acconfig.h can only appear in the top srcdir.
4008 if (-f 'acconfig.h')
4009 {
4010 push (@files, '$(top_srcdir)/acconfig.h');
4011 }
4013 my $stamp = "${stamp_dir}stamp-h${hdr_index}";
4014 $output_rules .=
4015 file_contents ('remake-hdr',
4016 new Automake::Location,
4017 FILES => "@files",
4018 CONFIG_H => $cn_sans_dir,
4019 CONFIG_HIN => $ins[0],
4020 CONFIG_H_DEPS => "@ins",
4021 CONFIG_H_PATH => $config_h_path,
4022 STAMP => "$stamp");
4024 push @distclean_config, $cn_sans_dir, $stamp;
4025 }
4026 }
4028 $output_rules .= file_contents ('clean-hdr',
4029 new Automake::Location,
4030 FILES => "@distclean_config")
4031 if @distclean_config;
4033 # Distribute and define mkinstalldirs only if it is already present
4034 # in the package, for backward compatibility (some people may still
4035 # use $(mkinstalldirs)).
4036 my $mkidpath = "$config_aux_dir/mkinstalldirs";
4037 if (-f $mkidpath)
4038 {
4039 # Use require_file so that any existing script gets updated
4040 # by --force-missing.
4041 require_conf_file ($mkidpath, FOREIGN, 'mkinstalldirs');
4042 define_variable ('mkinstalldirs',
4043 "\$(SHELL) $am_config_aux_dir/mkinstalldirs", INTERNAL);
4044 }
4045 else
4046 {
4047 # Use $(install_sh), not $(mkdir_p) because the latter requires
4048 # at least one argument, and $(mkinstalldirs) used to work
4049 # even without arguments (e.g. $(mkinstalldirs) $(conditional_dir)).
4050 define_variable ('mkinstalldirs', '$(install_sh) -d', INTERNAL);
4051 }
4053 reject_var ('CONFIG_HEADER',
4054 "`CONFIG_HEADER' is an anachronism; now determined "
4055 . "automatically\nfrom `$configure_ac'");
4057 my @config_h;
4058 foreach my $spec (@config_headers)
4059 {
4060 my ($out, @ins) = split_config_file_spec ($spec);
4061 # Generate CONFIG_HEADER define.
4062 if ($relative_dir eq dirname ($out))
4063 {
4064 push @config_h, basename ($out);
4065 }
4066 else
4067 {
4068 push @config_h, "\$(top_builddir)/$out";
4069 }
4070 }
4071 define_variable ("CONFIG_HEADER", "@config_h", INTERNAL)
4072 if @config_h;
4074 # Now look for other files in this directory which must be remade
4075 # by config.status, and generate rules for them.
4076 my @actual_other_files = ();
4077 foreach my $lfile (@other_input_files)
4078 {
4079 my $file;
4080 my @inputs;
4081 if ($lfile =~ /^([^:]*):(.*)$/)
4082 {
4083 # This is the ":" syntax of AC_OUTPUT.
4084 $file = $1;
4085 @inputs = split (':', $2);
4086 }
4087 else
4088 {
4089 # Normal usage.
4090 $file = $lfile;
4091 @inputs = $file . '.in';
4092 }
4094 # Automake files should not be stored in here, but in %MAKE_LIST.
4095 prog_error ("$lfile in \@other_input_files\n"
4096 . "\@other_input_files = (@other_input_files)")
4097 if -f $file . '.am';
4099 my $local = basename ($file);
4101 # Make sure the dist directory for each input file is created.
4102 # We only have to do this at the topmost level though. This
4103 # is a bit ugly but it easier than spreading out the logic,
4104 # especially in cases like AC_OUTPUT(foo/out:bar/in), where
4105 # there is no Makefile in bar/.
4106 fill_dist_dirs (@inputs)
4107 if $relative_dir eq '.';
4109 # We skip files that aren't in this directory. However, if
4110 # the file's directory does not have a Makefile, and we are
4111 # currently doing `.', then we create a rule to rebuild the
4112 # file in the subdir.
4113 my $fd = dirname ($file);
4114 if ($fd ne $relative_dir)
4115 {
4116 if ($relative_dir eq '.' && ! &is_make_dir ($fd))
4117 {
4118 $local = $file;
4119 }
4120 else
4121 {
4122 next;
4123 }
4124 }
4126 my @rewritten_inputs = rewrite_inputs_into_dependencies ($file, @inputs);
4128 # Cannot output rules for shell variables.
4129 next if (substitute_ac_subst_variables $local) =~ /\$/;
4131 $output_rules .= ($local . ': '
4132 . '$(top_builddir)/config.status '
4133 . "@rewritten_inputs\n"
4134 . "\t"
4135 . 'cd $(top_builddir) && '
4136 . '$(SHELL) ./config.status '
4137 . ($relative_dir eq '.' ? '' : '$(subdir)/')
4138 . '$@'
4139 . "\n");
4140 push (@actual_other_files, $local);
4141 }
4143 # For links we should clean destinations and distribute sources.
4144 foreach my $spec (@config_links)
4145 {
4146 my ($link, $file) = split /:/, $spec;
4147 # Some people do AC_CONFIG_LINKS($computed). We only handle
4148 # the DEST:SRC form.
4149 next unless $file;
4150 my $where = $ac_config_files_location{$link};
4152 # Skip destinations that contain shell variables.
4153 if ((substitute_ac_subst_variables $link) !~ /\$/)
4154 {
4155 # We skip links that aren't in this directory. However, if
4156 # the link's directory does not have a Makefile, and we are
4157 # currently doing `.', then we add the link to CONFIG_CLEAN_FILES
4158 # in `.'s Makefile.in.
4159 my $local = basename ($link);
4160 my $fd = dirname ($link);
4161 if ($fd ne $relative_dir)
4162 {
4163 if ($relative_dir eq '.' && ! &is_make_dir ($fd))
4164 {
4165 $local = $link;
4166 }
4167 else
4168 {
4169 $local = undef;
4170 }
4171 }
4172 push @actual_other_files, $local if $local;
4173 }
4175 # Do not process sources that contain shell variables.
4176 if ((substitute_ac_subst_variables $file) !~ /\$/)
4177 {
4178 my $fd = dirname ($file);
4180 # Make sure the dist directory for each input file is created.
4181 # We only have to do this at the topmost level though.
4182 if ($relative_dir eq '.')
4183 {
4184 $dist_dirs{$fd} = 1;
4185 }
4187 # We distribute files that are in this directory.
4188 # At the top-level (`.') we also distribute files whose
4189 # directory does not have a Makefile.
4190 if (($fd eq $relative_dir)
4191 || ($relative_dir eq '.' && ! &is_make_dir ($fd)))
4192 {
4193 # The following will distribute $file as a side-effect when
4194 # it is appropriate (i.e., when $file is not already an output).
4195 # We do not need the result, just the side-effect.
4196 rewrite_inputs_into_dependencies ($link, $file);
4197 }
4198 }
4199 }
4201 # These files get removed by "make distclean".
4202 define_pretty_variable ('CONFIG_CLEAN_FILES', TRUE, INTERNAL,
4203 @actual_other_files);
4204 }
4206 # Handle C headers.
4207 sub handle_headers
4208 {
4209 my @r = &am_install_var ('-defaultdist', 'header', 'HEADERS', 'include',
4210 'oldinclude', 'pkginclude',
4211 'noinst', 'check');
4212 foreach (@r)
4213 {
4214 next unless $_->[1] =~ /\..*$/;
4215 &saw_extension ($&);
4216 }
4217 }
4219 sub handle_gettext
4220 {
4221 return if ! $seen_gettext || $relative_dir ne '.';
4223 my $subdirs = var 'SUBDIRS';
4225 if (! $subdirs)
4226 {
4227 err_ac "AM_GNU_GETTEXT used but SUBDIRS not defined";
4228 return;
4229 }
4231 # Perform some sanity checks to help users get the right setup.
4232 # We disable these tests when po/ doesn't exist in order not to disallow
4233 # unusual gettext setups.
4234 #
4235 # Bruno Haible:
4236 # | The idea is:
4237 # |
4238 # | 1) If a package doesn't have a directory po/ at top level, it
4239 # | will likely have multiple po/ directories in subpackages.
4240 # |
4241 # | 2) It is useful to warn for the absence of intl/ if AM_GNU_GETTEXT
4242 # | is used without 'external'. It is also useful to warn for the
4243 # | presence of intl/ if AM_GNU_GETTEXT([external]) is used. Both
4244 # | warnings apply only to the usual layout of packages, therefore
4245 # | they should both be disabled if no po/ directory is found at
4246 # | top level.
4248 if (-d 'po')
4249 {
4250 my @subdirs = $subdirs->value_as_list_recursive;
4252 msg_var ('syntax', $subdirs,
4253 "AM_GNU_GETTEXT used but `po' not in SUBDIRS")
4254 if ! grep ($_ eq 'po', @subdirs);
4256 # intl/ is not required when AM_GNU_GETTEXT is called with
4257 # the `external' option.
4258 msg_var ('syntax', $subdirs,
4259 "AM_GNU_GETTEXT used but `intl' not in SUBDIRS")
4260 if (! $seen_gettext_external
4261 && ! grep ($_ eq 'intl', @subdirs));
4263 # intl/ should not be used with AM_GNU_GETTEXT([external])
4264 msg_var ('syntax', $subdirs,
4265 "`intl' should not be in SUBDIRS when "
4266 . "AM_GNU_GETTEXT([external]) is used")
4267 if ($seen_gettext_external && grep ($_ eq 'intl', @subdirs));
4268 }
4270 require_file ($ac_gettext_location, GNU, 'ABOUT-NLS');
4271 }
4273 # Handle footer elements.
4274 sub handle_footer
4275 {
4276 reject_rule ('.SUFFIXES',
4277 "use variable `SUFFIXES', not target `.SUFFIXES'");
4279 # Note: AIX 4.1 /bin/make will fail if any suffix rule appears
4280 # before .SUFFIXES. So we make sure that .SUFFIXES appears before
4281 # anything else, by sticking it right after the default: target.
4282 $output_header .= ".SUFFIXES:\n";
4283 my $suffixes = var 'SUFFIXES';
4284 my @suffixes = Automake::Rule::suffixes;
4285 if (@suffixes || $suffixes)
4286 {
4287 # Make sure SUFFIXES has unique elements. Sort them to ensure
4288 # the output remains consistent. However, $(SUFFIXES) is
4289 # always at the start of the list, unsorted. This is done
4290 # because make will choose rules depending on the ordering of
4291 # suffixes, and this lets the user have some control. Push
4292 # actual suffixes, and not $(SUFFIXES). Some versions of make
4293 # do not like variable substitutions on the .SUFFIXES line.
4294 my @user_suffixes = ($suffixes
4295 ? $suffixes->value_as_list_recursive : ());
4297 my %suffixes = map { $_ => 1 } @suffixes;
4298 delete @suffixes{@user_suffixes};
4300 $output_header .= (".SUFFIXES: "
4301 . join (' ', @user_suffixes, sort keys %suffixes)
4302 . "\n");
4303 }
4305 $output_trailer .= file_contents ('footer', new Automake::Location);
4306 }
4309 # Generate `make install' rules.
4310 sub handle_install ()
4311 {
4312 $output_rules .= &file_contents
4313 ('install',
4314 new Automake::Location,
4315 maybe_BUILT_SOURCES => (set_seen ('BUILT_SOURCES')
4316 ? (" \$(BUILT_SOURCES)\n"
4317 . "\t\$(MAKE) \$(AM_MAKEFLAGS)")
4318 : ''),
4319 'installdirs-local' => (user_phony_rule 'installdirs-local'
4320 ? ' installdirs-local' : ''),
4321 am__installdirs => variable_value ('am__installdirs') || '');
4322 }
4325 # Deal with all and all-am.
4326 sub handle_all ($)
4327 {
4328 my ($makefile) = @_;
4330 # Output `all-am'.
4332 # Put this at the beginning for the sake of non-GNU makes. This
4333 # is still wrong if these makes can run parallel jobs. But it is
4334 # right enough.
4335 unshift (@all, basename ($makefile));
4337 foreach my $spec (@config_headers)
4338 {
4339 my ($out, @ins) = split_config_file_spec ($spec);
4340 push (@all, basename ($out))
4341 if dirname ($out) eq $relative_dir;
4342 }
4344 # Install `all' hooks.
4345 push (@all, "all-local")
4346 if user_phony_rule "all-local";
4348 &pretty_print_rule ("all-am:", "\t\t", @all);
4349 &depend ('.PHONY', 'all-am', 'all');
4352 # Output `all'.
4354 my @local_headers = ();
4355 push @local_headers, '$(BUILT_SOURCES)'
4356 if var ('BUILT_SOURCES');
4357 foreach my $spec (@config_headers)
4358 {
4359 my ($out, @ins) = split_config_file_spec ($spec);
4360 push @local_headers, basename ($out)
4361 if dirname ($out) eq $relative_dir;
4362 }
4364 if (@local_headers)
4365 {
4366 # We need to make sure config.h is built before we recurse.
4367 # We also want to make sure that built sources are built
4368 # before any ordinary `all' targets are run. We can't do this
4369 # by changing the order of dependencies to the "all" because
4370 # that breaks when using parallel makes. Instead we handle
4371 # things explicitly.
4372 $output_all .= ("all: @local_headers"
4373 . "\n\t"
4374 . '$(MAKE) $(AM_MAKEFLAGS) '
4375 . (var ('SUBDIRS') ? 'all-recursive' : 'all-am')
4376 . "\n\n");
4377 }
4378 else
4379 {
4380 $output_all .= "all: " . (var ('SUBDIRS')
4381 ? 'all-recursive' : 'all-am') . "\n\n";
4382 }
4383 }
4386 # &do_check_merge_target ()
4387 # -------------------------
4388 # Handle check merge target specially.
4389 sub do_check_merge_target ()
4390 {
4391 # Include user-defined local form of target.
4392 push @check_tests, 'check-local'
4393 if user_phony_rule 'check-local';
4395 # In --cygnus mode, check doesn't depend on all.
4396 if (option 'cygnus')
4397 {
4398 # Just run the local check rules.
4399 pretty_print_rule ('check-am:', "\t\t", @check);
4400 }
4401 else
4402 {
4403 # The check target must depend on the local equivalent of
4404 # `all', to ensure all the primary targets are built. Then it
4405 # must build the local check rules.
4406 $output_rules .= "check-am: all-am\n";
4407 pretty_print_rule ("\t\$(MAKE) \$(AM_MAKEFLAGS)", "\t ",
4408 @check)
4409 if @check;
4410 }
4411 pretty_print_rule ("\t\$(MAKE) \$(AM_MAKEFLAGS)", "\t ",
4412 @check_tests)
4413 if @check_tests;
4415 depend '.PHONY', 'check', 'check-am';
4416 # Handle recursion. We have to honor BUILT_SOURCES like for `all:'.
4417 $output_rules .= ("check: "
4418 . (var ('BUILT_SOURCES')
4419 ? "\$(BUILT_SOURCES)\n\t\$(MAKE) \$(AM_MAKEFLAGS) "
4420 : '')
4421 . (var ('SUBDIRS') ? 'check-recursive' : 'check-am')
4422 . "\n");
4423 }
4425 # handle_clean ($MAKEFILE)
4426 # ------------------------
4427 # Handle all 'clean' targets.
4428 sub handle_clean ($)
4429 {
4430 my ($makefile) = @_;
4432 # Clean the files listed in user variables if they exist.
4433 $clean_files{'$(MOSTLYCLEANFILES)'} = MOSTLY_CLEAN
4434 if var ('MOSTLYCLEANFILES');
4435 $clean_files{'$(CLEANFILES)'} = CLEAN
4436 if var ('CLEANFILES');
4437 $clean_files{'$(DISTCLEANFILES)'} = DIST_CLEAN
4438 if var ('DISTCLEANFILES');
4439 $clean_files{'$(MAINTAINERCLEANFILES)'} = MAINTAINER_CLEAN
4440 if var ('MAINTAINERCLEANFILES');
4442 # Built sources are automatically removed by maintainer-clean.
4443 $clean_files{'$(BUILT_SOURCES)'} = MAINTAINER_CLEAN
4444 if var ('BUILT_SOURCES');
4446 # Compute a list of "rm"s to run for each target.
4447 my %rms = (MOSTLY_CLEAN, [],
4448 CLEAN, [],
4449 DIST_CLEAN, [],
4450 MAINTAINER_CLEAN, []);
4452 foreach my $file (keys %clean_files)
4453 {
4454 my $when = $clean_files{$file};
4455 prog_error 'invalid entry in %clean_files'
4456 unless exists $rms{$when};
4458 my $rm = "rm -f $file";
4459 # If file is a variable, make sure when don't call `rm -f' without args.
4460 $rm ="test -z \"$file\" || $rm"
4461 if ($file =~ /^\s*\$(\(.*\)|\{.*\})\s*$/);
4463 push @{$rms{$when}}, "\t-$rm\n";
4464 }
4466 $output_rules .= &file_contents
4467 ('clean',
4468 new Automake::Location,
4469 MOSTLYCLEAN_RMS => join ('', sort @{$rms{&MOSTLY_CLEAN}}),
4470 CLEAN_RMS => join ('', sort @{$rms{&CLEAN}}),
4471 DISTCLEAN_RMS => join ('', sort @{$rms{&DIST_CLEAN}}),
4472 MAINTAINER_CLEAN_RMS => join ('', sort @{$rms{&MAINTAINER_CLEAN}}),
4473 MAKEFILE => basename $makefile,
4474 );
4475 }
4478 # &target_cmp ($A, $B)
4479 # --------------------
4480 # Subroutine for &handle_factored_dependencies to let `.PHONY' and
4481 # other `.TARGETS' be last.
4482 sub target_cmp
4483 {
4484 return 0 if $a eq $b;
4486 my $a1 = substr ($a, 0, 1);
4487 my $b1 = substr ($b, 0, 1);
4488 if ($a1 ne $b1)
4489 {
4490 return -1 if $b1 eq '.';
4491 return 1 if $a1 eq '.';
4492 }
4493 return $a cmp $b;
4494 }
4497 # &handle_factored_dependencies ()
4498 # --------------------------------
4499 # Handle everything related to gathered targets.
4500 sub handle_factored_dependencies
4501 {
4502 # Reject bad hooks.
4503 foreach my $utarg ('uninstall-data-local', 'uninstall-data-hook',
4504 'uninstall-exec-local', 'uninstall-exec-hook',
4505 'uninstall-dvi-local',
4506 'uninstall-html-local',
4507 'uninstall-info-local',
4508 'uninstall-pdf-local',
4509 'uninstall-ps-local')
4510 {
4511 my $x = $utarg;
4512 $x =~ s/-.*-/-/;
4513 reject_rule ($utarg, "use `$x', not `$utarg'");
4514 }
4516 reject_rule ('install-local',
4517 "use `install-data-local' or `install-exec-local', "
4518 . "not `install-local'");
4520 reject_rule ('install-hook',
4521 "use `install-data-hook' or `install-exec-hook', "
4522 . "not `install-hook'");
4524 # Install the -local hooks.
4525 foreach (keys %dependencies)
4526 {
4527 # Hooks are installed on the -am targets.
4528 s/-am$// or next;
4529 depend ("$_-am", "$_-local")
4530 if user_phony_rule "$_-local";
4531 }
4533 # Install the -hook hooks.
4534 # FIXME: Why not be as liberal as we are with -local hooks?
4535 foreach ('install-exec', 'install-data', 'uninstall')
4536 {
4537 if (user_phony_rule "$_-hook")
4538 {
4539 $actions{"$_-am"} .=
4540 ("\t\@\$(NORMAL_INSTALL)\n"
4541 . "\t" . '$(MAKE) $(AM_MAKEFLAGS) ' . "$_-hook\n");
4542 depend ('.MAKE', "$_-am");
4543 }
4544 }
4546 # All the required targets are phony.
4547 depend ('.PHONY', keys %required_targets);
4549 # Actually output gathered targets.
4550 foreach (sort target_cmp keys %dependencies)
4551 {
4552 # If there is nothing about this guy, skip it.
4553 next
4554 unless (@{$dependencies{$_}}
4555 || $actions{$_}
4556 || $required_targets{$_});
4558 # Define gathered targets in undefined conditions.
4559 # FIXME: Right now we must handle .PHONY as an exception,
4560 # because people write things like
4561 # .PHONY: myphonytarget
4562 # to append dependencies. This would not work if Automake
4563 # refrained from defining its own .PHONY target as it does
4564 # with other overridden targets.
4565 # Likewise for `.MAKE'.
4566 my @undefined_conds = (TRUE,);
4567 if ($_ ne '.PHONY' && $_ ne '.MAKE')
4568 {
4569 @undefined_conds =
4570 Automake::Rule::define ($_, 'internal',
4571 RULE_AUTOMAKE, TRUE, INTERNAL);
4572 }
4573 my @uniq_deps = uniq (sort @{$dependencies{$_}});
4574 foreach my $cond (@undefined_conds)
4575 {
4576 my $condstr = $cond->subst_string;
4577 &pretty_print_rule ("$condstr$_:", "$condstr\t", @uniq_deps);
4578 $output_rules .= $actions{$_} if defined $actions{$_};
4579 $output_rules .= "\n";
4580 }
4581 }
4582 }
4585 # &handle_tests_dejagnu ()
4586 # ------------------------
4587 sub handle_tests_dejagnu
4588 {
4589 push (@check_tests, 'check-DEJAGNU');
4590 $output_rules .= file_contents ('dejagnu', new Automake::Location);
4591 }
4594 # Handle TESTS variable and other checks.
4595 sub handle_tests
4596 {
4597 if (option 'dejagnu')
4598 {
4599 &handle_tests_dejagnu;
4600 }
4601 else
4602 {
4603 foreach my $c ('DEJATOOL', 'RUNTEST', 'RUNTESTFLAGS')
4604 {
4605 reject_var ($c, "`$c' defined but `dejagnu' not in "
4606 . "`AUTOMAKE_OPTIONS'");
4607 }
4608 }
4610 if (var ('TESTS'))
4611 {
4612 push (@check_tests, 'check-TESTS');
4613 $output_rules .= &file_contents ('check', new Automake::Location);
4615 # Tests that are known programs should have $(EXEEXT) appended.
4616 append_exeext { exists $known_programs{$_[0]} } 'TESTS';
4617 }
4618 }
4620 # Handle Emacs Lisp.
4621 sub handle_emacs_lisp
4622 {
4623 my @elfiles = &am_install_var ('-candist', 'lisp', 'LISP',
4624 'lisp', 'noinst');
4626 return if ! @elfiles;
4628 define_pretty_variable ('am__ELFILES', TRUE, INTERNAL,
4629 map { $_->[1] } @elfiles);
4630 define_pretty_variable ('am__ELCFILES', TRUE, INTERNAL,
4631 '$(am__ELFILES:.el=.elc)');
4632 # This one can be overridden by users.
4633 define_pretty_variable ('ELCFILES', TRUE, INTERNAL, '$(LISP:.el=.elc)');
4635 push @all, '$(ELCFILES)';
4637 require_variables ($elfiles[0][0], "Emacs Lisp sources seen", TRUE,
4638 'EMACS', 'lispdir');
4639 require_conf_file ($elfiles[0][0], FOREIGN, 'elisp-comp');
4640 &define_variable ('elisp_comp', "$am_config_aux_dir/elisp-comp", INTERNAL);
4641 }
4643 # Handle Python
4644 sub handle_python
4645 {
4646 my @pyfiles = &am_install_var ('-defaultdist', 'python', 'PYTHON',
4647 'noinst');
4648 return if ! @pyfiles;
4650 require_variables ($pyfiles[0][0], "Python sources seen", TRUE, 'PYTHON');
4651 require_conf_file ($pyfiles[0][0], FOREIGN, 'py-compile');
4652 &define_variable ('py_compile', "$am_config_aux_dir/py-compile", INTERNAL);
4653 }
4655 # Handle Java.
4656 sub handle_java
4657 {
4658 my @sourcelist = &am_install_var ('-candist',
4659 'java', 'JAVA',
4660 'java', 'noinst', 'check');
4661 return if ! @sourcelist;
4663 my @prefix = am_primary_prefixes ('JAVA', 1,
4664 'java', 'noinst', 'check');
4666 my $dir;
4667 foreach my $curs (@prefix)
4668 {
4669 next
4670 if $curs eq 'EXTRA';
4672 err_var "${curs}_JAVA", "multiple _JAVA primaries in use"
4673 if defined $dir;
4674 $dir = $curs;
4675 }
4678 push (@all, 'class' . $dir . '.stamp');
4679 }
4682 # Handle some of the minor options.
4683 sub handle_minor_options
4684 {
4685 if (option 'readme-alpha')
4686 {
4687 if ($relative_dir eq '.')
4688 {
4689 if ($package_version !~ /^$GNITS_VERSION_PATTERN$/)
4690 {
4691 msg ('error-gnits', $package_version_location,
4692 "version `$package_version' doesn't follow " .
4693 "Gnits standards");
4694 }
4695 if (defined $1 && -f 'README-alpha')
4696 {
4697 # This means we have an alpha release. See
4698 # GNITS_VERSION_PATTERN for details.
4699 push_dist_common ('README-alpha');
4700 }
4701 }
4702 }
4703 }
4705 ################################################################
4707 # ($OUTPUT, @INPUTS)
4708 # &split_config_file_spec ($SPEC)
4709 # -------------------------------
4710 # Decode the Autoconf syntax for config files (files, headers, links
4711 # etc.).
4712 sub split_config_file_spec ($)
4713 {
4714 my ($spec) = @_;
4715 my ($output, @inputs) = split (/:/, $spec);
4717 push @inputs, "$output.in"
4718 unless @inputs;
4720 return ($output, @inputs);
4721 }
4723 # $input
4724 # locate_am (@POSSIBLE_SOURCES)
4725 # -----------------------------
4726 # AC_CONFIG_FILES allow specifications such as Makefile:top.in:mid.in:bot.in
4727 # This functions returns the first *.in file for which a *.am exists.
4728 # It returns undef otherwise.
4729 sub locate_am (@)
4730 {
4731 my (@rest) = @_;
4732 my $input;
4733 foreach my $file (@rest)
4734 {
4735 if (($file =~ /^(.*)\.in$/) && -f "$1.am")
4736 {
4737 $input = $file;
4738 last;
4739 }
4740 }
4741 return $input;
4742 }
4744 my %make_list;
4746 # &scan_autoconf_config_files ($WHERE, $CONFIG-FILES)
4747 # ---------------------------------------------------
4748 # Study $CONFIG-FILES which is the first argument to AC_CONFIG_FILES
4749 # (or AC_OUTPUT).
4750 sub scan_autoconf_config_files ($$)
4751 {
4752 my ($where, $config_files) = @_;
4754 # Look at potential Makefile.am's.
4755 foreach (split ' ', $config_files)
4756 {
4757 # Must skip empty string for Perl 4.
4758 next if $_ eq "\\" || $_ eq '';
4760 # Handle $local:$input syntax.
4761 my ($local, @rest) = split (/:/);
4762 @rest = ("$local.in",) unless @rest;
4763 my $input = locate_am @rest;
4764 if ($input)
4765 {
4766 # We have a file that automake should generate.
4767 $make_list{$input} = join (':', ($local, @rest));
4768 }
4769 else
4770 {
4771 # We have a file that automake should cause to be
4772 # rebuilt, but shouldn't generate itself.
4773 push (@other_input_files, $_);
4774 }
4775 $ac_config_files_location{$local} = $where;
4776 }
4777 }
4780 # &scan_autoconf_traces ($FILENAME)
4781 # ---------------------------------
4782 sub scan_autoconf_traces ($)
4783 {
4784 my ($filename) = @_;
4786 # Macros to trace, with their minimal number of arguments.
4787 #
4788 # IMPORTANT: If you add a macro here, you should also add this macro
4789 # ========= to Automake-preselection in autoconf/lib/autom4te.in.
4790 my %traced = (
4791 AC_CANONICAL_BUILD => 0,
4792 AC_CANONICAL_HOST => 0,
4793 AC_CANONICAL_TARGET => 0,
4794 AC_CONFIG_AUX_DIR => 1,
4795 AC_CONFIG_FILES => 1,
4796 AC_CONFIG_HEADERS => 1,
4797 AC_CONFIG_LIBOBJ_DIR => 1,
4798 AC_CONFIG_LINKS => 1,
4799 AC_INIT => 0,
4800 AC_LIBSOURCE => 1,
4801 AC_REQUIRE_AUX_FILE => 1,
4802 AC_SUBST_TRACE => 1,
4803 AM_AUTOMAKE_VERSION => 1,
4804 AM_CONDITIONAL => 2,
4805 AM_ENABLE_MULTILIB => 0,
4806 AM_GNU_GETTEXT => 0,
4807 AM_INIT_AUTOMAKE => 0,
4808 AM_MAINTAINER_MODE => 0,
4809 AM_PROG_CC_C_O => 0,
4810 LT_SUPPORTED_TAG => 1,
4811 _LT_AC_TAGCONFIG => 0,
4812 m4_include => 1,
4813 m4_sinclude => 1,
4814 sinclude => 1,
4815 );
4817 my $traces = ($ENV{AUTOCONF} || 'autoconf') . " ";
4819 # Use a separator unlikely to be used, not `:', the default, which
4820 # has a precise meaning for AC_CONFIG_FILES and so on.
4821 $traces .= join (' ',
4822 map { "--trace=$_" . ':\$f:\$l::\$n::\${::}%' }
4823 (keys %traced));
4825 my $tracefh = new Automake::XFile ("$traces $filename |");
4826 verb "reading $traces";
4828 while ($_ = $tracefh->getline)
4829 {
4830 chomp;
4831 my ($here, @args) = split (/::/);
4832 my $where = new Automake::Location $here;
4833 my $macro = $args[0];
4835 prog_error ("unrequested trace `$macro'")
4836 unless exists $traced{$macro};
4838 # Skip and diagnose malformed calls.
4839 if ($#args < $traced{$macro})
4840 {
4841 msg ('syntax', $where, "not enough arguments for $macro");
4842 next;
4843 }
4845 # Alphabetical ordering please.
4846 if ($macro eq 'AC_CANONICAL_BUILD')
4847 {
4848 if ($seen_canonical <= AC_CANONICAL_BUILD)
4849 {
4850 $seen_canonical = AC_CANONICAL_BUILD;
4851 $canonical_location = $where;
4852 }
4853 }
4854 elsif ($macro eq 'AC_CANONICAL_HOST')
4855 {
4856 if ($seen_canonical <= AC_CANONICAL_HOST)
4857 {
4858 $seen_canonical = AC_CANONICAL_HOST;
4859 $canonical_location = $where;
4860 }
4861 }
4862 elsif ($macro eq 'AC_CANONICAL_TARGET')
4863 {
4864 $seen_canonical = AC_CANONICAL_TARGET;
4865 $canonical_location = $where;
4866 }
4867 elsif ($macro eq 'AC_CONFIG_AUX_DIR')
4868 {
4869 if ($seen_init_automake)
4870 {
4871 error ($where, "AC_CONFIG_AUX_DIR must be called before "
4872 . "AM_INIT_AUTOMAKE...", partial => 1);
4873 error ($seen_init_automake, "... AM_INIT_AUTOMAKE called here");
4874 }
4875 $config_aux_dir = $args[1];
4876 $config_aux_dir_set_in_configure_ac = 1;
4877 $relative_dir = '.';
4878 check_directory ($config_aux_dir, $where);
4879 }
4880 elsif ($macro eq 'AC_CONFIG_FILES')
4881 {
4882 # Look at potential Makefile.am's.
4883 scan_autoconf_config_files ($where, $args[1]);
4884 }
4885 elsif ($macro eq 'AC_CONFIG_HEADERS')
4886 {
4887 foreach my $spec (split (' ', $args[1]))
4888 {
4889 my ($dest, @src) = split (':', $spec);
4890 $ac_config_files_location{$dest} = $where;
4891 push @config_headers, $spec;
4892 }
4893 }
4894 elsif ($macro eq 'AC_CONFIG_LIBOBJ_DIR')
4895 {
4896 $config_libobj_dir = $args[1];
4897 $relative_dir = '.';
4898 check_directory ($config_libobj_dir, $where);
4899 }
4900 elsif ($macro eq 'AC_CONFIG_LINKS')
4901 {
4902 foreach my $spec (split (' ', $args[1]))
4903 {
4904 my ($dest, $src) = split (':', $spec);
4905 $ac_config_files_location{$dest} = $where;
4906 push @config_links, $spec;
4907 }
4908 }
4909 elsif ($macro eq 'AC_INIT')
4910 {
4911 if (defined $args[2])
4912 {
4913 $package_version = $args[2];
4914 $package_version_location = $where;
4915 }
4916 }
4917 elsif ($macro eq 'AC_LIBSOURCE')
4918 {
4919 $libsources{$args[1]} = $here;
4920 }
4921 elsif ($macro eq 'AC_SUBST_TRACE')
4922 {
4923 # Just check for alphanumeric in AC_SUBST_TRACE. If you do
4924 # AC_SUBST(5), then too bad.
4925 $configure_vars{$args[1]} = $where
4926 if $args[1] =~ /^\w+$/;
4927 }
4928 elsif ($macro eq 'AM_AUTOMAKE_VERSION')
4929 {
4930 error ($where,
4931 "version mismatch. This is Automake $VERSION,\n" .
4932 "but the definition used by this AM_INIT_AUTOMAKE\n" .
4933 "comes from Automake $args[1]. You should recreate\n" .
4934 "aclocal.m4 with aclocal and run automake again.\n",
4935 # $? = 63 is used to indicate version mismatch to missing.
4936 exit_code => 63)
4937 if $VERSION ne $args[1];
4939 $seen_automake_version = 1;
4940 }
4941 elsif ($macro eq 'AM_CONDITIONAL')
4942 {
4943 $configure_cond{$args[1]} = $where;
4944 }
4945 elsif ($macro eq 'AM_ENABLE_MULTILIB')
4946 {
4947 $seen_multilib = $where;
4948 }
4949 elsif ($macro eq 'AM_GNU_GETTEXT')
4950 {
4951 $seen_gettext = $where;
4952 $ac_gettext_location = $where;
4953 $seen_gettext_external = grep ($_ eq 'external', @args);
4954 }
4955 elsif ($macro eq 'AM_INIT_AUTOMAKE')
4956 {
4957 $seen_init_automake = $where;
4958 if (defined $args[2])
4959 {
4960 $package_version = $args[2];
4961 $package_version_location = $where;
4962 }
4963 elsif (defined $args[1])
4964 {
4965 exit $exit_code
4966 if (process_global_option_list ($where,
4967 split (' ', $args[1])));
4968 }
4969 }
4970 elsif ($macro eq 'AM_MAINTAINER_MODE')
4971 {
4972 $seen_maint_mode = $where;
4973 }
4974 elsif ($macro eq 'AM_PROG_CC_C_O')
4975 {
4976 $seen_cc_c_o = $where;
4977 }
4978 elsif ($macro eq 'AC_REQUIRE_AUX_FILE')
4979 {
4980 # Only remember the first time a file is required.
4981 $required_aux_file{$args[1]} = $where
4982 unless exists $required_aux_file{$args[1]};
4983 }
4984 elsif ($macro eq 'm4_include'
4985 || $macro eq 'm4_sinclude'
4986 || $macro eq 'sinclude')
4987 {
4988 # Skip missing `sinclude'd files.
4989 next if $macro ne 'm4_include' && ! -f $args[1];
4991 # Some modified versions of Autoconf don't use
4992 # forzen files. Consequently it's possible that we see all
4993 # m4_include's performed during Autoconf's startup.
4994 # Obviously we don't want to distribute Autoconf's files
4995 # so we skip absolute filenames here.
4996 push @configure_deps, '$(top_srcdir)/' . $args[1]
4997 unless $here =~ m,^(?:\w:)?[\\/],;
4998 # Keep track of the greatest timestamp.
4999 if (-e $args[1])
5000 {
5001 my $mtime = mtime $args[1];
5002 $configure_deps_greatest_timestamp = $mtime
5003 if $mtime > $configure_deps_greatest_timestamp;
5004 }
5005 }
5006 elsif ($macro eq 'LT_SUPPORTED_TAG')
5007 {
5008 $libtool_tags{$args[1]} = 1;
5009 $libtool_new_api = 1;
5010 }
5011 elsif ($macro eq '_LT_AC_TAGCONFIG')
5012 {
5013 # _LT_AC_TAGCONFIG is an old macro present in Libtool 1.5.
5014 # We use it to detect whether tags are supported. Our
5015 # prefered interface is LT_SUPPORTED_TAG, but it was
5016 # introduced in Libtool 1.6.
5017 if (0 == keys %libtool_tags)
5018 {
5019 # Hardcode the tags supported by Libtool 1.5.
5020 %libtool_tags = (CC => 1, CXX => 1, GCJ => 1, F77 => 1);
5021 }
5022 }
5023 }
5025 $tracefh->close;
5026 }
5029 # &scan_autoconf_files ()
5030 # -----------------------
5031 # Check whether we use `configure.ac' or `configure.in'.
5032 # Scan it (and possibly `aclocal.m4') for interesting things.
5033 # We must scan aclocal.m4 because there might be AC_SUBSTs and such there.
5034 sub scan_autoconf_files ()
5035 {
5036 # Reinitialize libsources here. This isn't really necessary,
5037 # since we currently assume there is only one configure.ac. But
5038 # that won't always be the case.
5039 %libsources = ();
5041 # Keep track of the youngest configure dependency.
5042 $configure_deps_greatest_timestamp = mtime $configure_ac;
5043 if (-e 'aclocal.m4')
5044 {
5045 my $mtime = mtime 'aclocal.m4';
5046 $configure_deps_greatest_timestamp = $mtime
5047 if $mtime > $configure_deps_greatest_timestamp;
5048 }
5050 scan_autoconf_traces ($configure_ac);
5052 @configure_input_files = sort keys %make_list;
5053 # Set input and output files if not specified by user.
5054 if (! @input_files)
5055 {
5056 @input_files = @configure_input_files;
5057 %output_files = %make_list;
5058 }
5061 if (! $seen_init_automake)
5062 {
5063 err_ac ("no proper invocation of AM_INIT_AUTOMAKE was found.\nYou "
5064 . "should verify that $configure_ac invokes AM_INIT_AUTOMAKE,"
5065 . "\nthat aclocal.m4 is present in the top-level directory,\n"
5066 . "and that aclocal.m4 was recently regenerated "
5067 . "(using aclocal).");
5068 }
5069 else
5070 {
5071 if (! $seen_automake_version)
5072 {
5073 if (-f 'aclocal.m4')
5074 {
5075 error ($seen_init_automake,
5076 "your implementation of AM_INIT_AUTOMAKE comes from " .
5077 "an\nold Automake version. You should recreate " .
5078 "aclocal.m4\nwith aclocal and run automake again.\n",
5079 # $? = 63 is used to indicate version mismatch to missing.
5080 exit_code => 63);
5081 }
5082 else
5083 {
5084 error ($seen_init_automake,
5085 "no proper implementation of AM_INIT_AUTOMAKE was " .
5086 "found,\nprobably because aclocal.m4 is missing...\n" .
5087 "You should run aclocal to create this file, then\n" .
5088 "run automake again.\n");
5089 }
5090 }
5091 }
5093 locate_aux_dir ();
5095 # Reorder @input_files so that the Makefile that distributes aux
5096 # files is processed last. This is important because each directory
5097 # can require auxiliary scripts and we should wait until they have
5098 # been installed before distributing them.
5100 # The Makefile.in that distribute the aux files is the one in
5101 # $config_aux_dir or the top-level Makefile.
5102 my $auxdirdist = is_make_dir ($config_aux_dir) ? $config_aux_dir : '.';
5103 my @new_input_files = ();
5104 while (@input_files)
5105 {
5106 my $in = pop @input_files;
5107 my @ins = split (/:/, $output_files{$in});
5108 if (dirname ($ins[0]) eq $auxdirdist)
5109 {
5110 push @new_input_files, $in;
5111 $automake_will_process_aux_dir = 1;
5112 }
5113 else
5114 {
5115 unshift @new_input_files, $in;
5116 }
5117 }
5118 @input_files = @new_input_files;
5120 # If neither the auxdir/Makefile nor the ./Makefile are generated
5121 # by Automake, we won't distribute the aux files anyway. Assume
5122 # the user know what (s)he does, and pretend we will distribute
5123 # them to disable the error in require_file_internal.
5124 $automake_will_process_aux_dir = 1 if ! is_make_dir ($auxdirdist);
5126 # Look for some files we need. Always check for these. This
5127 # check must be done for every run, even those where we are only
5128 # looking at a subdir Makefile. We must set relative_dir for
5129 # maybe_push_required_file to work.
5130 $relative_dir = '.';
5131 foreach my $file (keys %required_aux_file)
5132 {
5133 require_conf_file ($required_aux_file{$file}->get, FOREIGN, $file)
5134 }
5135 err_am "`install.sh' is an anachronism; use `install-sh' instead"
5136 if -f $config_aux_dir . '/install.sh';
5138 # Preserve dist_common for later.
5139 $configure_dist_common = variable_value ('DIST_COMMON') || '';
5141 }
5143 ################################################################
5145 # Set up for Cygnus mode.
5146 sub check_cygnus
5147 {
5148 my $cygnus = option 'cygnus';
5149 return unless $cygnus;
5151 set_strictness ('foreign');
5152 set_option ('no-installinfo', $cygnus);
5153 set_option ('no-dependencies', $cygnus);
5154 set_option ('no-dist', $cygnus);
5156 err_ac "`AM_MAINTAINER_MODE' required when --cygnus specified"
5157 if !$seen_maint_mode;
5158 }
5160 # Do any extra checking for GNU standards.
5161 sub check_gnu_standards
5162 {
5163 if ($relative_dir eq '.')
5164 {
5165 # In top level (or only) directory.
5166 require_file ("$am_file.am", GNU,
5167 qw/INSTALL NEWS README AUTHORS ChangeLog/);
5169 # Accept one of these three licenses; default to COPYING.
5170 # Make sure we do not overwrite an existing license.
5171 my $license;
5172 foreach (qw /COPYING COPYING.LIB COPYING.LESSER/)
5173 {
5174 if (-f $_)
5175 {
5176 $license = $_;
5177 last;
5178 }
5179 }
5180 require_file ("$am_file.am", GNU, 'COPYING')
5181 unless $license;
5182 }
5184 for my $opt ('no-installman', 'no-installinfo')
5185 {
5186 msg ('error-gnu', option $opt,
5187 "option `$opt' disallowed by GNU standards")
5188 if option $opt;
5189 }
5190 }
5192 # Do any extra checking for GNITS standards.
5193 sub check_gnits_standards
5194 {
5195 if ($relative_dir eq '.')
5196 {
5197 # In top level (or only) directory.
5198 require_file ("$am_file.am", GNITS, 'THANKS');
5199 }
5200 }
5202 ################################################################
5203 #
5204 # Functions to handle files of each language.
5206 # Each `lang_X_rewrite($DIRECTORY, $BASE, $EXT)' function follows a
5207 # simple formula: Return value is LANG_SUBDIR if the resulting object
5208 # file should be in a subdir if the source file is, LANG_PROCESS if
5209 # file is to be dealt with, LANG_IGNORE otherwise.
5211 # Much of the actual processing is handled in
5212 # handle_single_transform. These functions exist so that
5213 # auxiliary information can be recorded for a later cleanup pass.
5214 # Note that the calls to these functions are computed, so don't bother
5215 # searching for their precise names in the source.
5217 # This is just a convenience function that can be used to determine
5218 # when a subdir object should be used.
5219 sub lang_sub_obj
5220 {
5221 return option 'subdir-objects' ? LANG_SUBDIR : LANG_PROCESS;
5222 }
5224 # Rewrite a single C source file.
5225 sub lang_c_rewrite
5226 {
5227 my ($directory, $base, $ext, $nonansi_obj, $have_per_exec_flags, $var) = @_;
5229 if (option 'ansi2knr' && $base =~ /_$/)
5230 {
5231 # FIXME: include line number in error.
5232 err_am "C source file `$base.c' would be deleted by ansi2knr rules";
5233 }
5235 my $r = LANG_PROCESS;
5236 if (option 'subdir-objects')
5237 {
5238 $r = LANG_SUBDIR;
5239 if ($directory && $directory ne '.')
5240 {
5241 $base = $directory . '/' . $base;
5243 # libtool is always able to put the object at the proper place,
5244 # so we do not have to require AM_PROG_CC_C_O when building .lo files.
5245 msg_var ('portability', $var,
5246 "compiling `$base.c' in subdir requires "
5247 . "`AM_PROG_CC_C_O' in `$configure_ac'",
5248 uniq_scope => US_GLOBAL,
5249 uniq_part => 'AM_PROG_CC_C_O subdir')
5250 unless $seen_cc_c_o || $nonansi_obj eq '.lo';
5251 }
5253 # In this case we already have the directory information, so
5254 # don't add it again.
5255 $de_ansi_files{$base} = '';
5256 }
5257 else
5258 {
5259 $de_ansi_files{$base} = (($directory eq '.' || $directory eq '')
5260 ? ''
5261 : "$directory/");
5262 }
5264 if (! $seen_cc_c_o
5265 && $have_per_exec_flags
5266 && ! option 'subdir-objects'
5267 && $nonansi_obj ne '.lo')
5268 {
5269 msg_var ('portability',
5270 $var, "compiling `$base.c' with per-target flags requires "
5271 . "`AM_PROG_CC_C_O' in `$configure_ac'",
5272 uniq_scope => US_GLOBAL,
5273 uniq_part => 'AM_PROG_CC_C_O per-target')
5274 }
5276 return $r;
5277 }
5279 # Rewrite a single C++ source file.
5280 sub lang_cxx_rewrite
5281 {
5282 return &lang_sub_obj;
5283 }
5285 # Rewrite a single header file.
5286 sub lang_header_rewrite
5287 {
5288 # Header files are simply ignored.
5289 return LANG_IGNORE;
5290 }
5292 # Rewrite a single yacc file.
5293 sub lang_yacc_rewrite
5294 {
5295 my ($directory, $base, $ext) = @_;
5297 my $r = &lang_sub_obj;
5298 (my $newext = $ext) =~ tr/y/c/;
5299 return ($r, $newext);
5300 }
5302 # Rewrite a single yacc++ file.
5303 sub lang_yaccxx_rewrite
5304 {
5305 my ($directory, $base, $ext) = @_;
5307 my $r = &lang_sub_obj;
5308 (my $newext = $ext) =~ tr/y/c/;
5309 return ($r, $newext);
5310 }
5312 # Rewrite a single lex file.
5313 sub lang_lex_rewrite
5314 {
5315 my ($directory, $base, $ext) = @_;
5317 my $r = &lang_sub_obj;
5318 (my $newext = $ext) =~ tr/l/c/;
5319 return ($r, $newext);
5320 }
5322 # Rewrite a single lex++ file.
5323 sub lang_lexxx_rewrite
5324 {
5325 my ($directory, $base, $ext) = @_;
5327 my $r = &lang_sub_obj;
5328 (my $newext = $ext) =~ tr/l/c/;
5329 return ($r, $newext);
5330 }
5332 # Rewrite a single assembly file.
5333 sub lang_asm_rewrite
5334 {
5335 return &lang_sub_obj;
5336 }
5338 # Rewrite a single preprocessed assembly file.
5339 sub lang_cppasm_rewrite
5340 {
5341 return &lang_sub_obj;
5342 }
5344 # Rewrite a single Fortran 77 file.
5345 sub lang_f77_rewrite
5346 {
5347 return LANG_PROCESS;
5348 }
5350 # Rewrite a single Fortran file.
5351 sub lang_fc_rewrite
5352 {
5353 return LANG_PROCESS;
5354 }
5356 # Rewrite a single preprocessed Fortran file.
5357 sub lang_ppfc_rewrite
5358 {
5359 return LANG_PROCESS;
5360 }
5362 # Rewrite a single preprocessed Fortran 77 file.
5363 sub lang_ppf77_rewrite
5364 {
5365 return LANG_PROCESS;
5366 }
5368 # Rewrite a single ratfor file.
5369 sub lang_ratfor_rewrite
5370 {
5371 return LANG_PROCESS;
5372 }
5374 # Rewrite a single Objective C file.
5375 sub lang_objc_rewrite
5376 {
5377 return &lang_sub_obj;
5378 }
5380 # Rewrite a single Java file.
5381 sub lang_java_rewrite
5382 {
5383 return LANG_SUBDIR;
5384 }
5386 # The lang_X_finish functions are called after all source file
5387 # processing is done. Each should handle defining rules for the
5388 # language, etc. A finish function is only called if a source file of
5389 # the appropriate type has been seen.
5391 sub lang_c_finish
5392 {
5393 # Push all libobjs files onto de_ansi_files. We actually only
5394 # push files which exist in the current directory, and which are
5395 # genuine source files.
5396 foreach my $file (keys %libsources)
5397 {
5398 if ($file =~ /^(.*)\.[cly]$/ && -f "$relative_dir/$file")
5399 {
5400 $de_ansi_files{$1} = ''
5401 }
5402 }
5404 if (option 'ansi2knr' && keys %de_ansi_files)
5405 {
5406 # Make all _.c files depend on their corresponding .c files.
5407 my @objects;
5408 foreach my $base (sort keys %de_ansi_files)
5409 {
5410 # Each _.c file must depend on ansi2knr; otherwise it
5411 # might be used in a parallel build before it is built.
5412 # We need to support files in the srcdir and in the build
5413 # dir (because these files might be auto-generated. But
5414 # we can't use $< -- some makes only define $< during a
5415 # suffix rule.
5416 my $ansfile = $de_ansi_files{$base} . $base . '.c';
5417 $output_rules .= ($base . "_.c: $ansfile \$(ANSI2KNR)\n\t"
5418 . '$(CPP) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS) $(CPPFLAGS) '
5419 . '`if test -f $(srcdir)/' . $ansfile
5420 . '; then echo $(srcdir)/' . $ansfile
5421 . '; else echo ' . $ansfile . '; fi` '
5422 . "| sed 's/^# \\([0-9]\\)/#line \\1/' "
5423 . '| $(ANSI2KNR) > $@'
5424 # If ansi2knr fails then we shouldn't
5425 # create the _.c file
5426 . " || rm -f \$\@\n");
5427 push (@objects, $base . '_.$(OBJEXT)');
5428 push (@objects, $base . '_.lo')
5429 if var ('LIBTOOL');
5431 # Explicitly clean the _.c files if they are in a
5432 # subdirectory. (In the current directory they get erased
5433 # by a `rm -f *_.c' rule.)
5434 $clean_files{$base . '_.c'} = MOSTLY_CLEAN
5435 if dirname ($base) ne '.';
5436 }
5438 # Make all _.o (and _.lo) files depend on ansi2knr.
5439 # Use a sneaky little hack to make it print nicely.
5440 &pretty_print_rule ('', '', @objects, ':', '$(ANSI2KNR)');
5441 }
5442 }
5444 # This is a yacc helper which is called whenever we have decided to
5445 # compile a yacc file.
5446 sub lang_yacc_target_hook
5447 {
5448 my ($self, $aggregate, $output, $input, %transform) = @_;
5450 my $flag = $aggregate . "_YFLAGS";
5451 my $flagvar = var $flag;
5452 my $YFLAGSvar = var 'YFLAGS';
5453 if (($flagvar && $flagvar->variable_value =~ /$DASH_D_PATTERN/o)
5454 || ($YFLAGSvar && $YFLAGSvar->variable_value =~ /$DASH_D_PATTERN/o))
5455 {
5456 (my $output_base = $output) =~ s/$KNOWN_EXTENSIONS_PATTERN$//;
5457 my $header = $output_base . '.h';
5459 # Found a `-d' that applies to the compilation of this file.
5460 # Add a dependency for the generated header file, and arrange
5461 # for that file to be included in the distribution.
5462 foreach my $cond (Automake::Rule::define (${header}, 'internal',
5463 RULE_AUTOMAKE, TRUE,
5464 INTERNAL))
5465 {
5466 my $condstr = $cond->subst_string;
5467 $output_rules .=
5468 "$condstr${header}: $output\n"
5469 # Recover from removal of $header
5470 . "$condstr\t\@if test ! -f \$@; then \\\n"
5471 . "$condstr\t rm -f $output; \\\n"
5472 . "$condstr\t \$(MAKE) \$(AM_MAKEFLAGS) $output; \\\n"
5473 . "$condstr\telse :; fi\n";
5474 }
5475 # Distribute the generated file, unless its .y source was
5476 # listed in a nodist_ variable. (&handle_source_transform
5477 # will set DIST_SOURCE.)
5478 &push_dist_common ($header)
5479 if $transform{'DIST_SOURCE'};
5481 # If the files are built in the build directory, then we want
5482 # to remove them with `make clean'. If they are in srcdir
5483 # they shouldn't be touched. However, we can't determine this
5484 # statically, and the GNU rules say that yacc/lex output files
5485 # should be removed by maintainer-clean. So that's what we
5486 # do.
5487 $clean_files{$header} = MAINTAINER_CLEAN;
5488 }
5489 # Erase $OUTPUT on `make maintainer-clean' (by GNU standards).
5490 # See the comment above for $HEADER.
5491 $clean_files{$output} = MAINTAINER_CLEAN;
5492 }
5494 # This is a lex helper which is called whenever we have decided to
5495 # compile a lex file.
5496 sub lang_lex_target_hook
5497 {
5498 my ($self, $aggregate, $output, $input) = @_;
5499 # If the files are built in the build directory, then we want to
5500 # remove them with `make clean'. If they are in srcdir they
5501 # shouldn't be touched. However, we can't determine this
5502 # statically, and the GNU rules say that yacc/lex output files
5503 # should be removed by maintainer-clean. So that's what we do.
5504 $clean_files{$output} = MAINTAINER_CLEAN;
5505 }
5507 # This is a helper for both lex and yacc.
5508 sub yacc_lex_finish_helper
5509 {
5510 return if defined $language_scratch{'lex-yacc-done'};
5511 $language_scratch{'lex-yacc-done'} = 1;
5513 # If there is more than one distinct yacc (resp lex) source file
5514 # in a given directory, then the `ylwrap' program is required to
5515 # allow parallel builds to work correctly. FIXME: for now, no
5516 # line number.
5517 require_conf_file ($configure_ac, FOREIGN, 'ylwrap');
5518 &define_variable ('YLWRAP', "$am_config_aux_dir/ylwrap", INTERNAL);
5519 }
5521 sub lang_yacc_finish
5522 {
5523 return if defined $language_scratch{'yacc-done'};
5524 $language_scratch{'yacc-done'} = 1;
5526 reject_var 'YACCFLAGS', "`YACCFLAGS' obsolete; use `YFLAGS' instead";
5528 &yacc_lex_finish_helper
5529 if count_files_for_language ('yacc') > 1;
5530 }
5533 sub lang_lex_finish
5534 {
5535 return if defined $language_scratch{'lex-done'};
5536 $language_scratch{'lex-done'} = 1;
5538 &yacc_lex_finish_helper
5539 if count_files_for_language ('lex') > 1;
5540 }
5543 # Given a hash table of linker names, pick the name that has the most
5544 # precedence. This is lame, but something has to have global
5545 # knowledge in order to eliminate the conflict. Add more linkers as
5546 # required.
5547 sub resolve_linker
5548 {
5549 my (%linkers) = @_;
5551 foreach my $l (qw(GCJLINK CXXLINK F77LINK FCLINK OBJCLINK))
5552 {
5553 return $l if defined $linkers{$l};
5554 }
5555 return 'LINK';
5556 }
5558 # Called to indicate that an extension was used.
5559 sub saw_extension
5560 {
5561 my ($ext) = @_;
5562 if (! defined $extension_seen{$ext})
5563 {
5564 $extension_seen{$ext} = 1;
5565 }
5566 else
5567 {
5568 ++$extension_seen{$ext};
5569 }
5570 }
5572 # Return the number of files seen for a given language. Knows about
5573 # special cases we care about. FIXME: this is hideous. We need
5574 # something that involves real language objects. For instance yacc
5575 # and yaccxx could both derive from a common yacc class which would
5576 # know about the strange ylwrap requirement. (Or better yet we could
5577 # just not support legacy yacc!)
5578 sub count_files_for_language
5579 {
5580 my ($name) = @_;
5582 my @names;
5583 if ($name eq 'yacc' || $name eq 'yaccxx')
5584 {
5585 @names = ('yacc', 'yaccxx');
5586 }
5587 elsif ($name eq 'lex' || $name eq 'lexxx')
5588 {
5589 @names = ('lex', 'lexxx');
5590 }
5591 else
5592 {
5593 @names = ($name);
5594 }
5596 my $r = 0;
5597 foreach $name (@names)
5598 {
5599 my $lang = $languages{$name};
5600 foreach my $ext (@{$lang->extensions})
5601 {
5602 $r += $extension_seen{$ext}
5603 if defined $extension_seen{$ext};
5604 }
5605 }
5607 return $r
5608 }
5610 # Called to ask whether source files have been seen . If HEADERS is 1,
5611 # headers can be included.
5612 sub saw_sources_p
5613 {
5614 my ($headers) = @_;
5616 # count all the sources
5617 my $count = 0;
5618 foreach my $val (values %extension_seen)
5619 {
5620 $count += $val;
5621 }
5623 if (!$headers)
5624 {
5625 $count -= count_files_for_language ('header');
5626 }
5628 return $count > 0;
5629 }
5632 # register_language (%ATTRIBUTE)
5633 # ------------------------------
5634 # Register a single language.
5635 # Each %ATTRIBUTE is of the form ATTRIBUTE => VALUE.
5636 sub register_language (%)
5637 {
5638 my (%option) = @_;
5640 # Set the defaults.
5641 $option{'ansi'} = 0
5642 unless defined $option{'ansi'};
5643 $option{'autodep'} = 'no'
5644 unless defined $option{'autodep'};
5645 $option{'linker'} = ''
5646 unless defined $option{'linker'};
5647 $option{'flags'} = []
5648 unless defined $option{'flags'};
5649 $option{'output_extensions'} = sub { return ( '.$(OBJEXT)', '.lo' ) }
5650 unless defined $option{'output_extensions'};
5651 $option{'nodist_specific'} = 0
5652 unless defined $option{'nodist_specific'};
5654 my $lang = new Language (%option);
5656 # Fill indexes.
5657 $extension_map{$_} = $lang->name foreach @{$lang->extensions};
5658 $languages{$lang->name} = $lang;
5659 my $link = $lang->linker;
5660 if ($link)
5661 {
5662 if (exists $link_languages{$link})
5663 {
5664 prog_error ("`$link' has different definitions in "
5665 . $lang->name . " and " . $link_languages{$link}->name)
5666 if $lang->link ne $link_languages{$link}->link;
5667 }
5668 else
5669 {
5670 $link_languages{$link} = $lang;
5671 }
5672 }
5674 # Update the pattern of known extensions.
5675 accept_extensions (@{$lang->extensions});
5677 # Upate the $suffix_rule map.
5678 foreach my $suffix (@{$lang->extensions})
5679 {
5680 foreach my $dest (&{$lang->output_extensions} ($suffix))
5681 {
5682 register_suffix_rule (INTERNAL, $suffix, $dest);
5683 }
5684 }
5685 }
5687 # derive_suffix ($EXT, $OBJ)
5688 # --------------------------
5689 # This function is used to find a path from a user-specified suffix $EXT
5690 # to $OBJ or to some other suffix we recognize internally, e.g. `cc'.
5691 sub derive_suffix ($$)
5692 {
5693 my ($source_ext, $obj) = @_;
5695 while (! $extension_map{$source_ext}
5696 && $source_ext ne $obj
5697 && exists $suffix_rules->{$source_ext}
5698 && exists $suffix_rules->{$source_ext}{$obj})
5699 {
5700 $source_ext = $suffix_rules->{$source_ext}{$obj}[0];
5701 }
5703 return $source_ext;
5704 }
5707 ################################################################
5709 # Pretty-print something and append to output_rules.
5710 sub pretty_print_rule
5711 {
5712 $output_rules .= &makefile_wrap (@_);
5713 }
5716 ################################################################
5719 ## -------------------------------- ##
5720 ## Handling the conditional stack. ##
5721 ## -------------------------------- ##
5724 # $STRING
5725 # make_conditional_string ($NEGATE, $COND)
5726 # ----------------------------------------
5727 sub make_conditional_string ($$)
5728 {
5729 my ($negate, $cond) = @_;
5730 $cond = "${cond}_TRUE"
5731 unless $cond =~ /^TRUE|FALSE$/;
5732 $cond = Automake::Condition::conditional_negate ($cond)
5733 if $negate;
5734 return $cond;
5735 }
5738 # $COND
5739 # cond_stack_if ($NEGATE, $COND, $WHERE)
5740 # --------------------------------------
5741 sub cond_stack_if ($$$)
5742 {
5743 my ($negate, $cond, $where) = @_;
5745 error $where, "$cond does not appear in AM_CONDITIONAL"
5746 if ! $configure_cond{$cond} && $cond !~ /^TRUE|FALSE$/;
5748 push (@cond_stack, make_conditional_string ($negate, $cond));
5750 return new Automake::Condition (@cond_stack);
5751 }
5754 # $COND
5755 # cond_stack_else ($NEGATE, $COND, $WHERE)
5756 # ----------------------------------------
5757 sub cond_stack_else ($$$)
5758 {
5759 my ($negate, $cond, $where) = @_;
5761 if (! @cond_stack)
5762 {
5763 error $where, "else without if";
5764 return FALSE;
5765 }
5767 $cond_stack[$#cond_stack] =
5768 Automake::Condition::conditional_negate ($cond_stack[$#cond_stack]);
5770 # If $COND is given, check against it.
5771 if (defined $cond)
5772 {
5773 $cond = make_conditional_string ($negate, $cond);
5775 error ($where, "else reminder ($negate$cond) incompatible with "
5776 . "current conditional: $cond_stack[$#cond_stack]")
5777 if $cond_stack[$#cond_stack] ne $cond;
5778 }
5780 return new Automake::Condition (@cond_stack);
5781 }
5784 # $COND
5785 # cond_stack_endif ($NEGATE, $COND, $WHERE)
5786 # -----------------------------------------
5787 sub cond_stack_endif ($$$)
5788 {
5789 my ($negate, $cond, $where) = @_;
5790 my $old_cond;
5792 if (! @cond_stack)
5793 {
5794 error $where, "endif without if";
5795 return TRUE;
5796 }
5798 # If $COND is given, check against it.
5799 if (defined $cond)
5800 {
5801 $cond = make_conditional_string ($negate, $cond);
5803 error ($where, "endif reminder ($negate$cond) incompatible with "
5804 . "current conditional: $cond_stack[$#cond_stack]")
5805 if $cond_stack[$#cond_stack] ne $cond;
5806 }
5808 pop @cond_stack;
5810 return new Automake::Condition (@cond_stack);
5811 }
5817 ## ------------------------ ##
5818 ## Handling the variables. ##
5819 ## ------------------------ ##
5822 # &define_pretty_variable ($VAR, $COND, $WHERE, @VALUE)
5823 # -----------------------------------------------------
5824 # Like define_variable, but the value is a list, and the variable may
5825 # be defined conditionally. The second argument is the Condition
5826 # under which the value should be defined; this should be the empty
5827 # string to define the variable unconditionally. The third argument
5828 # is a list holding the values to use for the variable. The value is
5829 # pretty printed in the output file.
5830 sub define_pretty_variable ($$$@)
5831 {
5832 my ($var, $cond, $where, @value) = @_;
5834 if (! vardef ($var, $cond))
5835 {
5836 Automake::Variable::define ($var, VAR_AUTOMAKE, '', $cond, "@value",
5837 '', $where, VAR_PRETTY);
5838 rvar ($var)->rdef ($cond)->set_seen;
5839 }
5840 }
5843 # define_variable ($VAR, $VALUE, $WHERE)
5844 # --------------------------------------
5845 # Define a new Automake Makefile variable VAR to VALUE, but only if
5846 # not already defined.
5847 sub define_variable ($$$)
5848 {
5849 my ($var, $value, $where) = @_;
5850 define_pretty_variable ($var, TRUE, $where, $value);
5851 }
5854 # define_files_variable ($VAR, \@BASENAME, $EXTENSION, $WHERE)
5855 # -----------------------------------------------------------
5856 # Define the $VAR which content is the list of file names composed of
5857 # a @BASENAME and the $EXTENSION.
5858 sub define_files_variable ($\@$$)
5859 {
5860 my ($var, $basename, $extension, $where) = @_;
5861 define_variable ($var,
5862 join (' ', map { "$_.$extension" } @$basename),
5863 $where);
5864 }
5867 # Like define_variable, but define a variable to be the configure
5868 # substitution by the same name.
5869 sub define_configure_variable ($)
5870 {
5871 my ($var) = @_;
5873 my $pretty = VAR_ASIS;
5874 my $owner = VAR_CONFIGURE;
5876 # Do not output the ANSI2KNR configure variable -- we AC_SUBST
5877 # it in protos.m4, but later redefine it elsewhere. This is
5878 # pretty hacky. We also don't output AMDEPBACKSLASH: it might
5879 # be subst'd by `\', which certainly would not be appreciated by
5880 # Make.
5881 if ($var eq 'ANSI2KNR' || $var eq 'AMDEPBACKSLASH')
5882 {
5883 $pretty = VAR_SILENT;
5884 $owner = VAR_AUTOMAKE;
5885 }
5887 Automake::Variable::define ($var, $owner, '', TRUE, subst $var,
5888 '', $configure_vars{$var}, $pretty);
5889 }
5892 # define_compiler_variable ($LANG)
5893 # --------------------------------
5894 # Define a compiler variable. We also handle defining the `LT'
5895 # version of the command when using libtool.
5896 sub define_compiler_variable ($)
5897 {
5898 my ($lang) = @_;
5900 my ($var, $value) = ($lang->compiler, $lang->compile);
5901 my $libtool_tag = '';
5902 $libtool_tag = '--tag=' . $lang->libtool_tag . ' '
5903 if $lang->libtool_tag && exists $libtool_tags{$lang->libtool_tag};
5904 &define_variable ($var, $value, INTERNAL);
5905 &define_variable ("LT$var",
5906 "\$(LIBTOOL) $libtool_tag\$(AM_LIBTOOLFLAGS) "
5907 . "\$(LIBTOOLFLAGS) --mode=compile $value",
5908 INTERNAL)
5909 if var ('LIBTOOL');
5910 }
5913 # define_linker_variable ($LANG)
5914 # ------------------------------
5915 # Define linker variables.
5916 sub define_linker_variable ($)
5917 {
5918 my ($lang) = @_;
5920 my $libtool_tag = '';
5921 $libtool_tag = '--tag=' . $lang->libtool_tag . ' '
5922 if $lang->libtool_tag && exists $libtool_tags{$lang->libtool_tag};
5923 # CCLD = $(CC).
5924 &define_variable ($lang->lder, $lang->ld, INTERNAL);
5925 # CCLINK = $(CCLD) blah blah...
5926 &define_variable ($lang->linker,
5927 ((var ('LIBTOOL') ?
5928 "\$(LIBTOOL) $libtool_tag\$(AM_LIBTOOLFLAGS) "
5929 . "\$(LIBTOOLFLAGS) --mode=link " : '')
5930 . $lang->link),
5931 INTERNAL);
5932 }
5934 sub define_per_target_linker_variable ($$)
5935 {
5936 my ($linker, $target) = @_;
5938 # If the user wrote a custom link command, we don't define ours.
5939 return "${target}_LINK"
5940 if set_seen "${target}_LINK";
5942 my $xlink = $linker ? $linker : 'LINK';
5944 my $lang = $link_languages{$xlink};
5945 prog_error "Unknown language for linker variable `$xlink'"
5946 unless $lang;
5948 my $link_command = $lang->link;
5949 if (var 'LIBTOOL')
5950 {
5951 my $libtool_tag = '';
5952 $libtool_tag = '--tag=' . $lang->libtool_tag . ' '
5953 if $lang->libtool_tag && exists $libtool_tags{$lang->libtool_tag};
5955 $link_command =
5956 "\$(LIBTOOL) $libtool_tag\$(AM_LIBTOOLFLAGS) \$(LIBTOOLFLAGS) "
5957 . "--mode=link " . $link_command;
5958 }
5960 # Rewrite each occurrence of `AM_$flag' in the link
5961 # command into `${derived}_$flag' if it exists.
5962 my $orig_command = $link_command;
5963 my @flags = (@{$lang->flags}, 'LDFLAGS');
5964 push @flags, 'LIBTOOLFLAGS' if var 'LIBTOOL';
5965 for my $flag (@flags)
5966 {
5967 my $val = "${target}_$flag";
5968 $link_command =~ s/\(AM_$flag\)/\($val\)/
5969 if set_seen ($val);
5970 }
5972 # If the computed command is the same as the generic command, use
5973 # the command linker variable.
5974 return $lang->linker
5975 if $link_command eq $orig_command;
5977 &define_variable ("${target}_LINK", $link_command, INTERNAL);
5978 return "${target}_LINK";
5979 }
5981 ################################################################
5983 # &check_trailing_slash ($WHERE, $LINE)
5984 # --------------------------------------
5985 # Return 1 iff $LINE ends with a slash.
5986 # Might modify $LINE.
5987 sub check_trailing_slash ($\$)
5988 {
5989 my ($where, $line) = @_;
5991 # Ignore `##' lines.
5992 return 0 if $$line =~ /$IGNORE_PATTERN/o;
5994 # Catch and fix a common error.
5995 msg "syntax", $where, "whitespace following trailing backslash"
5996 if $$line =~ s/\\\s+\n$/\\\n/;
5998 return $$line =~ /\\$/;
5999 }
6002 # &read_am_file ($AMFILE, $WHERE)
6003 # -------------------------------
6004 # Read Makefile.am and set up %contents. Simultaneously copy lines
6005 # from Makefile.am into $output_trailer, or define variables as
6006 # appropriate. NOTE we put rules in the trailer section. We want
6007 # user rules to come after our generated stuff.
6008 sub read_am_file ($$)
6009 {
6010 my ($amfile, $where) = @_;
6012 my $am_file = new Automake::XFile ("< $amfile");
6013 verb "reading $amfile";
6015 # Keep track of the youngest output dependency.
6016 my $mtime = mtime $amfile;
6017 $output_deps_greatest_timestamp = $mtime
6018 if $mtime > $output_deps_greatest_timestamp;
6020 my $spacing = '';
6021 my $comment = '';
6022 my $blank = 0;
6023 my $saw_bk = 0;
6024 my $var_look = VAR_ASIS;
6026 use constant IN_VAR_DEF => 0;
6027 use constant IN_RULE_DEF => 1;
6028 use constant IN_COMMENT => 2;
6029 my $prev_state = IN_RULE_DEF;
6031 while ($_ = $am_file->getline)
6032 {
6033 $where->set ("$amfile:$.");
6034 if (/$IGNORE_PATTERN/o)
6035 {
6036 # Merely delete comments beginning with two hashes.
6037 }
6038 elsif (/$WHITE_PATTERN/o)
6039 {
6040 error $where, "blank line following trailing backslash"
6041 if $saw_bk;
6042 # Stick a single white line before the incoming macro or rule.
6043 $spacing = "\n";
6044 $blank = 1;
6045 # Flush all comments seen so far.
6046 if ($comment ne '')
6047 {
6048 $output_vars .= $comment;
6049 $comment = '';
6050 }
6051 }
6052 elsif (/$COMMENT_PATTERN/o)
6053 {
6054 # Stick comments before the incoming macro or rule. Make
6055 # sure a blank line precedes the first block of comments.
6056 $spacing = "\n" unless $blank;
6057 $blank = 1;
6058 $comment .= $spacing . $_;
6059 $spacing = '';
6060 $prev_state = IN_COMMENT;
6061 }
6062 else
6063 {
6064 last;
6065 }
6066 $saw_bk = check_trailing_slash ($where, $_);
6067 }
6069 # We save the conditional stack on entry, and then check to make
6070 # sure it is the same on exit. This lets us conditionally include
6071 # other files.
6072 my @saved_cond_stack = @cond_stack;
6073 my $cond = new Automake::Condition (@cond_stack);
6075 my $last_var_name = '';
6076 my $last_var_type = '';
6077 my $last_var_value = '';
6078 my $last_where;
6079 # FIXME: shouldn't use $_ in this loop; it is too big.
6080 while ($_)
6081 {
6082 $where->set ("$amfile:$.");
6084 # Make sure the line is \n-terminated.
6085 chomp;
6086 $_ .= "\n";
6088 # Don't look at MAINTAINER_MODE_TRUE here. That shouldn't be
6089 # used by users. @MAINT@ is an anachronism now.
6090 $_ =~ s/\@MAINT\@//g
6091 unless $seen_maint_mode;
6093 my $new_saw_bk = check_trailing_slash ($where, $_);
6095 if (/$IGNORE_PATTERN/o)
6096 {
6097 # Merely delete comments beginning with two hashes.
6099 # Keep any backslash from the previous line.
6100 $new_saw_bk = $saw_bk;
6101 }
6102 elsif (/$WHITE_PATTERN/o)
6103 {
6104 # Stick a single white line before the incoming macro or rule.
6105 $spacing = "\n";
6106 error $where, "blank line following trailing backslash"
6107 if $saw_bk;
6108 }
6109 elsif (/$COMMENT_PATTERN/o)
6110 {
6111 error $where, "comment following trailing backslash"
6112 if $saw_bk && $comment eq '';
6114 # Stick comments before the incoming macro or rule.
6115 $comment .= $spacing . $_;
6116 $spacing = '';
6117 $prev_state = IN_COMMENT;
6118 }
6119 elsif ($saw_bk)
6120 {
6121 if ($prev_state == IN_RULE_DEF)
6122 {
6123 my $cond = new Automake::Condition @cond_stack;
6124 $output_trailer .= $cond->subst_string;
6125 $output_trailer .= $_;
6126 }
6127 elsif ($prev_state == IN_COMMENT)
6128 {
6129 # If the line doesn't start with a `#', add it.
6130 # We do this because a continued comment like
6131 # # A = foo \
6132 # bar \
6133 # baz
6134 # is not portable. BSD make doesn't honor
6135 # escaped newlines in comments.
6136 s/^#?/#/;
6137 $comment .= $spacing . $_;
6138 }
6139 else # $prev_state == IN_VAR_DEF
6140 {
6141 $last_var_value .= ' '
6142 unless $last_var_value =~ /\s$/;
6143 $last_var_value .= $_;
6145 if (!/\\$/)
6146 {
6147 Automake::Variable::define ($last_var_name, VAR_MAKEFILE,
6148 $last_var_type, $cond,
6149 $last_var_value, $comment,
6150 $last_where, VAR_ASIS)
6151 if $cond != FALSE;
6152 $comment = $spacing = '';
6153 }
6154 }
6155 }
6157 elsif (/$IF_PATTERN/o)
6158 {
6159 $cond = cond_stack_if ($1, $2, $where);
6160 }
6161 elsif (/$ELSE_PATTERN/o)
6162 {
6163 $cond = cond_stack_else ($1, $2, $where);
6164 }
6165 elsif (/$ENDIF_PATTERN/o)
6166 {
6167 $cond = cond_stack_endif ($1, $2, $where);
6168 }
6170 elsif (/$RULE_PATTERN/o)
6171 {
6172 # Found a rule.
6173 $prev_state = IN_RULE_DEF;
6175 # For now we have to output all definitions of user rules
6176 # and can't diagnose duplicates (see the comment in
6177 # Automake::Rule::define). So we go on and ignore the return value.
6178 Automake::Rule::define ($1, $amfile, RULE_USER, $cond, $where);
6180 check_variable_expansions ($_, $where);
6182 $output_trailer .= $comment . $spacing;
6183 my $cond = new Automake::Condition @cond_stack;
6184 $output_trailer .= $cond->subst_string;
6185 $output_trailer .= $_;
6186 $comment = $spacing = '';
6187 }
6188 elsif (/$ASSIGNMENT_PATTERN/o)
6189 {
6190 # Found a macro definition.
6191 $prev_state = IN_VAR_DEF;
6192 $last_var_name = $1;
6193 $last_var_type = $2;
6194 $last_var_value = $3;
6195 $last_where = $where->clone;
6196 if ($3 ne '' && substr ($3, -1) eq "\\")
6197 {
6198 # We preserve the `\' because otherwise the long lines
6199 # that are generated will be truncated by broken
6200 # `sed's.
6201 $last_var_value = $3 . "\n";
6202 }
6203 # Normally we try to output variable definitions in the
6204 # same format they were input. However, POSIX compliant
6205 # systems are not required to support lines longer than
6206 # 2048 bytes (most notably, some sed implementation are
6207 # limited to 4000 bytes, and sed is used by config.status
6208 # to rewrite Makefile.in into Makefile). Moreover nobody
6209 # would really write such long lines by hand since it is
6210 # hardly maintainable. So if a line is longer that 1000
6211 # bytes (an arbitrary limit), assume it has been
6212 # automatically generated by some tools, and flatten the
6213 # variable definition. Otherwise, keep the variable as it
6214 # as been input.
6215 $var_look = VAR_PRETTY if length ($last_var_value) >= 1000;
6217 if (!/\\$/)
6218 {
6219 Automake::Variable::define ($last_var_name, VAR_MAKEFILE,
6220 $last_var_type, $cond,
6221 $last_var_value, $comment,
6222 $last_where, $var_look)
6223 if $cond != FALSE;
6224 $comment = $spacing = '';
6225 $var_look = VAR_ASIS;
6226 }
6227 }
6228 elsif (/$INCLUDE_PATTERN/o)
6229 {
6230 my $path = $1;
6232 if ($path =~ s/^\$\(top_srcdir\)\///)
6233 {
6234 push (@include_stack, "\$\(top_srcdir\)/$path");
6235 # Distribute any included file.
6237 # Always use the $(top_srcdir) prefix in DIST_COMMON,
6238 # otherwise OSF make will implicitly copy the included
6239 # file in the build tree during `make distdir' to satisfy
6240 # the dependency.
6241 # (subdircond2.test and subdircond3.test will fail.)
6242 push_dist_common ("\$\(top_srcdir\)/$path");
6243 }
6244 else
6245 {
6246 $path =~ s/\$\(srcdir\)\///;
6247 push (@include_stack, "\$\(srcdir\)/$path");
6248 # Always use the $(srcdir) prefix in DIST_COMMON,
6249 # otherwise OSF make will implicitly copy the included
6250 # file in the build tree during `make distdir' to satisfy
6251 # the dependency.
6252 # (subdircond2.test and subdircond3.test will fail.)
6253 push_dist_common ("\$\(srcdir\)/$path");
6254 $path = $relative_dir . "/" . $path if $relative_dir ne '.';
6255 }
6256 $where->push_context ("`$path' included from here");
6257 &read_am_file ($path, $where);
6258 $where->pop_context;
6259 }
6260 else
6261 {
6262 # This isn't an error; it is probably a continued rule.
6263 # In fact, this is what we assume.
6264 $prev_state = IN_RULE_DEF;
6265 check_variable_expansions ($_, $where);
6266 $output_trailer .= $comment . $spacing;
6267 my $cond = new Automake::Condition @cond_stack;
6268 $output_trailer .= $cond->subst_string;
6269 $output_trailer .= $_;
6270 $comment = $spacing = '';
6271 error $where, "`#' comment at start of rule is unportable"
6272 if $_ =~ /^\t\s*\#/;
6273 }
6275 $saw_bk = $new_saw_bk;
6276 $_ = $am_file->getline;
6277 }
6279 $output_trailer .= $comment;
6281 error ($where, "trailing backslash on last line")
6282 if $saw_bk;
6284 error ($where, (@cond_stack ? "unterminated conditionals: @cond_stack"
6285 : "too many conditionals closed in include file"))
6286 if "@saved_cond_stack" ne "@cond_stack";
6287 }
6290 # define_standard_variables ()
6291 # ----------------------------
6292 # A helper for read_main_am_file which initializes configure variables
6293 # and variables from header-vars.am.
6294 sub define_standard_variables
6295 {
6296 my $saved_output_vars = $output_vars;
6297 my ($comments, undef, $rules) =
6298 file_contents_internal (1, "$libdir/am/header-vars.am",
6299 new Automake::Location);
6301 foreach my $var (sort keys %configure_vars)
6302 {
6303 &define_configure_variable ($var);
6304 }
6306 $output_vars .= $comments . $rules;
6307 }
6309 # Read main am file.
6310 sub read_main_am_file
6311 {
6312 my ($amfile) = @_;
6314 # This supports the strange variable tricks we are about to play.
6315 prog_error (macros_dump () . "variable defined before read_main_am_file")
6316 if (scalar (variables) > 0);
6318 # Generate copyright header for generated Makefile.in.
6319 # We do discard the output of predefined variables, handled below.
6320 $output_vars = ("# $in_file_name generated by automake "
6321 . $VERSION . " from $am_file_name.\n");
6322 $output_vars .= '# ' . subst ('configure_input') . "\n";
6323 $output_vars .= $gen_copyright;
6325 # We want to predefine as many variables as possible. This lets
6326 # the user set them with `+=' in Makefile.am.
6327 &define_standard_variables;
6329 # Read user file, which might override some of our values.
6330 &read_am_file ($amfile, new Automake::Location);
6331 }
6335 ################################################################
6337 # $FLATTENED
6338 # &flatten ($STRING)
6339 # ------------------
6340 # Flatten the $STRING and return the result.
6341 sub flatten
6342 {
6343 $_ = shift;
6345 s/\\\n//somg;
6346 s/\s+/ /g;
6347 s/^ //;
6348 s/ $//;
6350 return $_;
6351 }
6353 # transform($TOKEN, \%PAIRS)
6354 # ==========================
6355 # If ($TOKEN, $VAL) is in %PAIRS:
6356 # - replaces %$TOKEN% with $VAL,
6357 # - enables/disables ?$TOKEN? and ?!$TOKEN?,
6358 # - replaces %?$TOKEN% with TRUE or FALSE.
6359 sub transform($$)
6360 {
6361 my ($token, $transform) = @_;
6363 if (substr ($token, 0, 1) eq '%')
6364 {
6365 my $cond = (substr ($token, 1, 1) eq '?') ? 1 : 0;
6366 $token = substr ($token, 1 + $cond, -1);
6367 my $val = $transform->{$token};
6368 prog_error "Unknown %token% `$token'" unless defined $val;
6369 if ($cond)
6370 {
6371 return $val ? 'TRUE' : 'FALSE';
6372 }
6373 else
6374 {
6375 return $val;
6376 }
6377 }
6378 # Now $token is '?xxx?' or '?!xxx?'.
6379 my $neg = (substr ($token, 1, 1) eq '!') ? 1 : 0;
6380 $token = substr ($token, 1 + $neg, -1);
6381 my $val = $transform->{$token};
6382 prog_error "Unknown ?token? `$token' (neg = $neg)" unless defined $val;
6383 return (!!$val == $neg) ? '##%' : '';
6384 }
6386 # @PARAGRAPHS
6387 # &make_paragraphs ($MAKEFILE, [%TRANSFORM])
6388 # ------------------------------------------
6389 # Load a $MAKEFILE, apply the %TRANSFORM, and return it as a list of
6390 # paragraphs.
6391 sub make_paragraphs ($%)
6392 {
6393 my ($file, %transform) = @_;
6395 # Complete %transform with global options.
6396 # Note that %transform goes last, so it overrides global options.
6397 %transform = ('CYGNUS' => !! option 'cygnus',
6398 'MAINTAINER-MODE'
6399 => $seen_maint_mode ? subst ('MAINTAINER_MODE_TRUE') : '',
6401 'BZIP2' => !! option 'dist-bzip2',
6402 'COMPRESS' => !! option 'dist-tarZ',
6403 'GZIP' => ! option 'no-dist-gzip',
6404 'SHAR' => !! option 'dist-shar',
6405 'ZIP' => !! option 'dist-zip',
6407 'INSTALL-INFO' => ! option 'no-installinfo',
6408 'INSTALL-MAN' => ! option 'no-installman',
6409 'CK-NEWS' => !! option 'check-news',
6411 'SUBDIRS' => !! var ('SUBDIRS'),
6412 'TOPDIR_P' => $relative_dir eq '.',
6414 'BUILD' => ($seen_canonical >= AC_CANONICAL_BUILD),
6415 'HOST' => ($seen_canonical >= AC_CANONICAL_HOST),
6416 'TARGET' => ($seen_canonical >= AC_CANONICAL_TARGET),
6418 'LIBTOOL' => !! var ('LIBTOOL'),
6419 'NONLIBTOOL' => 1,
6420 'FIRST' => ! $transformed_files{$file},
6421 %transform);
6423 $transformed_files{$file} = 1;
6424 $_ = $am_file_cache{$file};
6426 if (! defined $_)
6427 {
6428 verb "reading $file";
6429 # Swallow the whole file.
6430 my $fc_file = new Automake::XFile "< $file";
6431 my $saved_dollar_slash = $/;
6432 undef $/;
6433 $_ = $fc_file->getline;
6434 $/ = $saved_dollar_slash;
6435 $fc_file->close;
6437 # Remove ##-comments.
6438 # Besides we don't need more than two consecutive new-lines.
6439 s/(?:$IGNORE_PATTERN|(?<=\n\n)\n+)//gom;
6441 $am_file_cache{$file} = $_;
6442 }
6444 # Substitute Automake template tokens.
6445 s/(?:%\??[\w\-]+%|\?!?[\w\-]+\?)/transform($&, \%transform)/ge;
6446 # transform() may have added some ##%-comments to strip.
6447 # (we use `##%' instead of `##' so we can distinguish ##%##%##% from
6448 # ####### and do not remove the latter.)
6449 s/^[ \t]*(?:##%)+.*\n//gm;
6451 # Split at unescaped new lines.
6452 my @lines = split (/(?<!\\)\n/, $_);
6453 my @res;
6455 while (defined ($_ = shift @lines))
6456 {
6457 my $paragraph = $_;
6458 # If we are a rule, eat as long as we start with a tab.
6459 if (/$RULE_PATTERN/smo)
6460 {
6461 while (defined ($_ = shift @lines) && $_ =~ /^\t/)
6462 {
6463 $paragraph .= "\n$_";
6464 }
6465 unshift (@lines, $_);
6466 }
6468 # If we are a comments, eat as much comments as you can.
6469 elsif (/$COMMENT_PATTERN/smo)
6470 {
6471 while (defined ($_ = shift @lines)
6472 && $_ =~ /$COMMENT_PATTERN/smo)
6473 {
6474 $paragraph .= "\n$_";
6475 }
6476 unshift (@lines, $_);
6477 }
6479 push @res, $paragraph;
6480 }
6482 return @res;
6483 }
6487 # ($COMMENT, $VARIABLES, $RULES)
6488 # &file_contents_internal ($IS_AM, $FILE, $WHERE, [%TRANSFORM])
6489 # -------------------------------------------------------------
6490 # Return contents of a file from $libdir/am, automatically skipping
6491 # macros or rules which are already known. $IS_AM iff the caller is
6492 # reading an Automake file (as opposed to the user's Makefile.am).
6493 sub file_contents_internal ($$$%)
6494 {
6495 my ($is_am, $file, $where, %transform) = @_;
6497 $where->set ($file);
6499 my $result_vars = '';
6500 my $result_rules = '';
6501 my $comment = '';
6502 my $spacing = '';
6504 # The following flags are used to track rules spanning across
6505 # multiple paragraphs.
6506 my $is_rule = 0; # 1 if we are processing a rule.
6507 my $discard_rule = 0; # 1 if the current rule should not be output.
6509 # We save the conditional stack on entry, and then check to make
6510 # sure it is the same on exit. This lets us conditionally include
6511 # other files.
6512 my @saved_cond_stack = @cond_stack;
6513 my $cond = new Automake::Condition (@cond_stack);
6515 foreach (make_paragraphs ($file, %transform))
6516 {
6517 # FIXME: no line number available.
6518 $where->set ($file);
6520 # Sanity checks.
6521 error $where, "blank line following trailing backslash:\n$_"
6522 if /\\$/;
6523 error $where, "comment following trailing backslash:\n$_"
6524 if /\\#/;
6526 if (/^$/)
6527 {
6528 $is_rule = 0;
6529 # Stick empty line before the incoming macro or rule.
6530 $spacing = "\n";
6531 }
6532 elsif (/$COMMENT_PATTERN/mso)
6533 {
6534 $is_rule = 0;
6535 # Stick comments before the incoming macro or rule.
6536 $comment = "$_\n";
6537 }
6539 # Handle inclusion of other files.
6540 elsif (/$INCLUDE_PATTERN/o)
6541 {
6542 if ($cond != FALSE)
6543 {
6544 my $file = ($is_am ? "$libdir/am/" : '') . $1;
6545 $where->push_context ("`$file' included from here");
6546 # N-ary `.=' fails.
6547 my ($com, $vars, $rules)
6548 = file_contents_internal ($is_am, $file, $where, %transform);
6549 $where->pop_context;
6550 $comment .= $com;
6551 $result_vars .= $vars;
6552 $result_rules .= $rules;
6553 }
6554 }
6556 # Handling the conditionals.
6557 elsif (/$IF_PATTERN/o)
6558 {
6559 $cond = cond_stack_if ($1, $2, $file);
6560 }
6561 elsif (/$ELSE_PATTERN/o)
6562 {
6563 $cond = cond_stack_else ($1, $2, $file);
6564 }
6565 elsif (/$ENDIF_PATTERN/o)
6566 {
6567 $cond = cond_stack_endif ($1, $2, $file);
6568 }
6570 # Handling rules.
6571 elsif (/$RULE_PATTERN/mso)
6572 {
6573 $is_rule = 1;
6574 $discard_rule = 0;
6575 # Separate relationship from optional actions: the first
6576 # `new-line tab" not preceded by backslash (continuation
6577 # line).
6578 my $paragraph = $_;
6579 /^(.*?)(?:(?<!\\)\n(\t.*))?$/s;
6580 my ($relationship, $actions) = ($1, $2 || '');
6582 # Separate targets from dependencies: the first colon.
6583 $relationship =~ /^([^:]+\S+) *: *(.*)$/som;
6584 my ($targets, $dependencies) = ($1, $2);
6585 # Remove the escaped new lines.
6586 # I don't know why, but I have to use a tmp $flat_deps.
6587 my $flat_deps = &flatten ($dependencies);
6588 my @deps = split (' ', $flat_deps);
6590 foreach (split (' ' , $targets))
6591 {
6592 # FIXME: 1. We are not robust to people defining several targets
6593 # at once, only some of them being in %dependencies. The
6594 # actions from the targets in %dependencies are usually generated
6595 # from the content of %actions, but if some targets in $targets
6596 # are not in %dependencies the ELSE branch will output
6597 # a rule for all $targets (i.e. the targets which are both
6598 # in %dependencies and $targets will have two rules).
6600 # FIXME: 2. The logic here is not able to output a
6601 # multi-paragraph rule several time (e.g. for each condition
6602 # it is defined for) because it only knows the first paragraph.
6604 # FIXME: 3. We are not robust to people defining a subset
6605 # of a previously defined "multiple-target" rule. E.g.
6606 # `foo:' after `foo bar:'.
6608 # Output only if not in FALSE.
6609 if (defined $dependencies{$_} && $cond != FALSE)
6610 {
6611 &depend ($_, @deps);
6612 if ($actions{$_})
6613 {
6614 $actions{$_} .= "\n$actions" if $actions;
6615 }
6616 else
6617 {
6618 $actions{$_} = $actions;
6619 }
6620 }
6621 else
6622 {
6623 # Free-lance dependency. Output the rule for all the
6624 # targets instead of one by one.
6625 my @undefined_conds =
6626 Automake::Rule::define ($targets, $file,
6627 $is_am ? RULE_AUTOMAKE : RULE_USER,
6628 $cond, $where);
6629 for my $undefined_cond (@undefined_conds)
6630 {
6631 my $condparagraph = $paragraph;
6632 $condparagraph =~ s/^/$undefined_cond->subst_string/gme;
6633 $result_rules .= "$spacing$comment$condparagraph\n";
6634 }
6635 if (scalar @undefined_conds == 0)
6636 {
6637 # Remember to discard next paragraphs
6638 # if they belong to this rule.
6639 # (but see also FIXME: #2 above.)
6640 $discard_rule = 1;
6641 }
6642 $comment = $spacing = '';
6643 last;
6644 }
6645 }
6646 }
6648 elsif (/$ASSIGNMENT_PATTERN/mso)
6649 {
6650 my ($var, $type, $val) = ($1, $2, $3);
6651 error $where, "variable `$var' with trailing backslash"
6652 if /\\$/;
6654 $is_rule = 0;
6656 Automake::Variable::define ($var,
6657 $is_am ? VAR_AUTOMAKE : VAR_MAKEFILE,
6658 $type, $cond, $val, $comment, $where,
6659 VAR_ASIS)
6660 if $cond != FALSE;
6662 $comment = $spacing = '';
6663 }
6664 else
6665 {
6666 # This isn't an error; it is probably some tokens which
6667 # configure is supposed to replace, such as `@SET-MAKE@',
6668 # or some part of a rule cut by an if/endif.
6669 if (! $cond->false && ! ($is_rule && $discard_rule))
6670 {
6671 s/^/$cond->subst_string/gme;
6672 $result_rules .= "$spacing$comment$_\n";
6673 }
6674 $comment = $spacing = '';
6675 }
6676 }
6678 error ($where, @cond_stack ?
6679 "unterminated conditionals: @cond_stack" :
6680 "too many conditionals closed in include file")
6681 if "@saved_cond_stack" ne "@cond_stack";
6683 return ($comment, $result_vars, $result_rules);
6684 }
6687 # $CONTENTS
6688 # &file_contents ($BASENAME, $WHERE, [%TRANSFORM])
6689 # ------------------------------------------------
6690 # Return contents of a file from $libdir/am, automatically skipping
6691 # macros or rules which are already known.
6692 sub file_contents ($$%)
6693 {
6694 my ($basename, $where, %transform) = @_;
6695 my ($comments, $variables, $rules) =
6696 file_contents_internal (1, "$libdir/am/$basename.am", $where,
6697 %transform);
6698 return "$comments$variables$rules";
6699 }
6702 # @PREFIX
6703 # &am_primary_prefixes ($PRIMARY, $CAN_DIST, @PREFIXES)
6704 # -----------------------------------------------------
6705 # Find all variable prefixes that are used for install directories. A
6706 # prefix `zar' qualifies iff:
6707 #
6708 # * `zardir' is a variable.
6709 # * `zar_PRIMARY' is a variable.
6710 #
6711 # As a side effect, it looks for misspellings. It is an error to have
6712 # a variable ending in a "reserved" suffix whose prefix is unknown, e.g.
6713 # "bin_PROGRAMS". However, unusual prefixes are allowed if a variable
6714 # of the same name (with "dir" appended) exists. For instance, if the
6715 # variable "zardir" is defined, then "zar_PROGRAMS" becomes valid.
6716 # This is to provide a little extra flexibility in those cases which
6717 # need it.
6718 sub am_primary_prefixes ($$@)
6719 {
6720 my ($primary, $can_dist, @prefixes) = @_;
6722 local $_;
6723 my %valid = map { $_ => 0 } @prefixes;
6724 $valid{'EXTRA'} = 0;
6725 foreach my $var (variables $primary)
6726 {
6727 # Automake is allowed to define variables that look like primaries
6728 # but which aren't. E.g. INSTALL_sh_DATA.
6729 # Autoconf can also define variables like INSTALL_DATA, so
6730 # ignore all configure variables (at least those which are not
6731 # redefined in Makefile.am).
6732 # FIXME: We should make sure that these variables are not
6733 # conditionally defined (or else adjust the condition below).
6734 my $def = $var->def (TRUE);
6735 next if $def && $def->owner != VAR_MAKEFILE;
6737 my $varname = $var->name;
6739 if ($varname =~ /^(nobase_)?(dist_|nodist_)?(.*)_[[:alnum:]]+$/)
6740 {
6741 my ($base, $dist, $X) = ($1 || '', $2 || '', $3 || '');
6742 if ($dist ne '' && ! $can_dist)
6743 {
6744 err_var ($var,
6745 "invalid variable `$varname': `dist' is forbidden");
6746 }
6747 # Standard directories must be explicitly allowed.
6748 elsif (! defined $valid{$X} && exists $standard_prefix{$X})
6749 {
6750 err_var ($var,
6751 "`${X}dir' is not a legitimate directory " .
6752 "for `$primary'");
6753 }
6754 # A not explicitly valid directory is allowed if Xdir is defined.
6755 elsif (! defined $valid{$X} &&
6756 $var->requires_variables ("`$varname' is used", "${X}dir"))
6757 {
6758 # Nothing to do. Any error message has been output
6759 # by $var->requires_variables.
6760 }
6761 else
6762 {
6763 # Ensure all extended prefixes are actually used.
6764 $valid{"$base$dist$X"} = 1;
6765 }
6766 }
6767 else
6768 {
6769 prog_error "unexpected variable name: $varname";
6770 }
6771 }
6773 # Return only those which are actually defined.
6774 return sort grep { var ($_ . '_' . $primary) } keys %valid;
6775 }
6778 # Handle `where_HOW' variable magic. Does all lookups, generates
6779 # install code, and possibly generates code to define the primary
6780 # variable. The first argument is the name of the .am file to munge,
6781 # the second argument is the primary variable (e.g. HEADERS), and all
6782 # subsequent arguments are possible installation locations.
6783 #
6784 # Returns list of [$location, $value] pairs, where
6785 # $value's are the values in all where_HOW variable, and $location
6786 # there associated location (the place here their parent variables were
6787 # defined).
6788 #
6789 # FIXME: this should be rewritten to be cleaner. It should be broken
6790 # up into multiple functions.
6791 #
6792 # Usage is: am_install_var (OPTION..., file, HOW, where...)
6793 sub am_install_var
6794 {
6795 my (@args) = @_;
6797 my $do_require = 1;
6798 my $can_dist = 0;
6799 my $default_dist = 0;
6800 while (@args)
6801 {
6802 if ($args[0] eq '-noextra')
6803 {
6804 $do_require = 0;
6805 }
6806 elsif ($args[0] eq '-candist')
6807 {
6808 $can_dist = 1;
6809 }
6810 elsif ($args[0] eq '-defaultdist')
6811 {
6812 $default_dist = 1;
6813 $can_dist = 1;
6814 }
6815 elsif ($args[0] !~ /^-/)
6816 {
6817 last;
6818 }
6819 shift (@args);
6820 }
6822 my ($file, $primary, @prefix) = @args;
6824 # Now that configure substitutions are allowed in where_HOW
6825 # variables, it is an error to actually define the primary. We
6826 # allow `JAVA', as it is customarily used to mean the Java
6827 # interpreter. This is but one of several Java hacks. Similarly,
6828 # `PYTHON' is customarily used to mean the Python interpreter.
6829 reject_var $primary, "`$primary' is an anachronism"
6830 unless $primary eq 'JAVA' || $primary eq 'PYTHON';
6832 # Get the prefixes which are valid and actually used.
6833 @prefix = am_primary_prefixes ($primary, $can_dist, @prefix);
6835 # If a primary includes a configure substitution, then the EXTRA_
6836 # form is required. Otherwise we can't properly do our job.
6837 my $require_extra;
6839 my @used = ();
6840 my @result = ();
6842 foreach my $X (@prefix)
6843 {
6844 my $nodir_name = $X;
6845 my $one_name = $X . '_' . $primary;
6846 my $one_var = var $one_name;
6848 my $strip_subdir = 1;
6849 # If subdir prefix should be preserved, do so.
6850 if ($nodir_name =~ /^nobase_/)
6851 {
6852 $strip_subdir = 0;
6853 $nodir_name =~ s/^nobase_//;
6854 }
6856 # If files should be distributed, do so.
6857 my $dist_p = 0;
6858 if ($can_dist)
6859 {
6860 $dist_p = (($default_dist && $nodir_name !~ /^nodist_/)
6861 || (! $default_dist && $nodir_name =~ /^dist_/));
6862 $nodir_name =~ s/^(dist|nodist)_//;
6863 }
6866 # Use the location of the currently processed variable.
6867 # We are not processing a particular condition, so pick the first
6868 # available.
6869 my $tmpcond = $one_var->conditions->one_cond;
6870 my $where = $one_var->rdef ($tmpcond)->location->clone;
6872 # Append actual contents of where_PRIMARY variable to
6873 # @result, skipping @substitutions@.
6874 foreach my $locvals ($one_var->value_as_list_recursive (location => 1))
6875 {
6876 my ($loc, $value) = @$locvals;
6877 # Skip configure substitutions.
6878 if ($value =~ /^\@.*\@$/)
6879 {
6880 if ($nodir_name eq 'EXTRA')
6881 {
6882 error ($where,
6883 "`$one_name' contains configure substitution, "
6884 . "but shouldn't");
6885 }
6886 # Check here to make sure variables defined in
6887 # configure.ac do not imply that EXTRA_PRIMARY
6888 # must be defined.
6889 elsif (! defined $configure_vars{$one_name})
6890 {
6891 $require_extra = $one_name
6892 if $do_require;
6893 }
6894 }
6895 else
6896 {
6897 push (@result, $locvals);
6898 }
6899 }
6900 # A blatant hack: we rewrite each _PROGRAMS primary to include
6901 # EXEEXT.
6902 append_exeext { 1 } $one_name
6903 if $primary eq 'PROGRAMS';
6904 # "EXTRA" shouldn't be used when generating clean targets,
6905 # all, or install targets. We used to warn if EXTRA_FOO was
6906 # defined uselessly, but this was annoying.
6907 next
6908 if $nodir_name eq 'EXTRA';
6910 if ($nodir_name eq 'check')
6911 {
6912 push (@check, '$(' . $one_name . ')');
6913 }
6914 else
6915 {
6916 push (@used, '$(' . $one_name . ')');
6917 }
6919 # Is this to be installed?
6920 my $install_p = $nodir_name ne 'noinst' && $nodir_name ne 'check';
6922 # If so, with install-exec? (or install-data?).
6923 my $exec_p = ($nodir_name =~ /$EXEC_DIR_PATTERN/o);
6925 my $check_options_p = $install_p && !! option 'std-options';
6927 # Use the location of the currently processed variable as context.
6928 $where->push_context ("while processing `$one_name'");
6930 # The variable containing all file to distribute.
6931 my $distvar = "\$($one_name)";
6932 $distvar = shadow_unconditionally ($one_name, $where)
6933 if ($dist_p && $one_var->has_conditional_contents);
6935 # Singular form of $PRIMARY.
6936 (my $one_primary = $primary) =~ s/S$//;
6937 $output_rules .= &file_contents ($file, $where,
6938 PRIMARY => $primary,
6939 ONE_PRIMARY => $one_primary,
6940 DIR => $X,
6941 NDIR => $nodir_name,
6942 BASE => $strip_subdir,
6944 EXEC => $exec_p,
6945 INSTALL => $install_p,
6946 DIST => $dist_p,
6947 DISTVAR => $distvar,
6948 'CK-OPTS' => $check_options_p);
6949 }
6951 # The JAVA variable is used as the name of the Java interpreter.
6952 # The PYTHON variable is used as the name of the Python interpreter.
6953 if (@used && $primary ne 'JAVA' && $primary ne 'PYTHON')
6954 {
6955 # Define it.
6956 define_pretty_variable ($primary, TRUE, INTERNAL, @used);
6957 $output_vars .= "\n";
6958 }
6960 err_var ($require_extra,
6961 "`$require_extra' contains configure substitution,\n"
6962 . "but `EXTRA_$primary' not defined")
6963 if ($require_extra && ! var ('EXTRA_' . $primary));
6965 # Push here because PRIMARY might be configure time determined.
6966 push (@all, '$(' . $primary . ')')
6967 if @used && $primary ne 'JAVA' && $primary ne 'PYTHON';
6969 # Make the result unique. This lets the user use conditionals in
6970 # a natural way, but still lets us program lazily -- we don't have
6971 # to worry about handling a particular object more than once.
6972 # We will keep only one location per object.
6973 my %result = ();
6974 for my $pair (@result)
6975 {
6976 my ($loc, $val) = @$pair;
6977 $result{$val} = $loc;
6978 }
6979 my @l = sort keys %result;
6980 return map { [$result{$_}->clone, $_] } @l;
6981 }
6984 ################################################################
6986 # Each key in this hash is the name of a directory holding a
6987 # Makefile.in. These variables are local to `is_make_dir'.
6988 my %make_dirs = ();
6989 my $make_dirs_set = 0;
6991 sub is_make_dir
6992 {
6993 my ($dir) = @_;
6994 if (! $make_dirs_set)
6995 {
6996 foreach my $iter (@configure_input_files)
6997 {
6998 $make_dirs{dirname ($iter)} = 1;
6999 }
7000 # We also want to notice Makefile.in's.
7001 foreach my $iter (@other_input_files)
7002 {
7003 if ($iter =~ /Makefile\.in$/)
7004 {
7005 $make_dirs{dirname ($iter)} = 1;
7006 }
7007 }
7008 $make_dirs_set = 1;
7009 }
7010 return defined $make_dirs{$dir};
7011 }
7013 ################################################################
7015 # Find the aux dir. This should match the algorithm used by
7016 # ./configure. (See the Autoconf documentation for for
7017 # AC_CONFIG_AUX_DIR.)
7018 sub locate_aux_dir ()
7019 {
7020 if (! $config_aux_dir_set_in_configure_ac)
7021 {
7022 # The default auxiliary directory is the first
7023 # of ., .., or ../.. that contains install-sh.
7024 # Assume . if install-sh doesn't exist yet.
7025 for my $dir (qw (. .. ../..))
7026 {
7027 if (-f "$dir/install-sh")
7028 {
7029 $config_aux_dir = $dir;
7030 last;
7031 }
7032 }
7033 $config_aux_dir = '.' unless $config_aux_dir;
7034 }
7035 # Avoid unsightly '/.'s.
7036 $am_config_aux_dir =
7037 '$(top_srcdir)' . ($config_aux_dir eq '.' ? "" : "/$config_aux_dir");
7038 $am_config_aux_dir =~ s,/*$,,;
7039 }
7042 # &maybe_push_required_file ($DIR, $FILE, $FULLFILE)
7043 # --------------------------------------------------
7044 # See if we want to push this file onto dist_common. This function
7045 # encodes the rules for deciding when to do so.
7046 sub maybe_push_required_file
7047 {
7048 my ($dir, $file, $fullfile) = @_;
7050 if ($dir eq $relative_dir)
7051 {
7052 push_dist_common ($file);
7053 return 1;
7054 }
7055 elsif ($relative_dir eq '.' && ! &is_make_dir ($dir))
7056 {
7057 # If we are doing the topmost directory, and the file is in a
7058 # subdir which does not have a Makefile, then we distribute it
7059 # here.
7061 # If a required file is above the source tree, it is important
7062 # to prefix it with `$(srcdir)' so that no VPATH search is
7063 # performed. Otherwise problems occur with Make implementations
7064 # that rewrite and simplify rules whose dependencies are found in a
7065 # VPATH location. Here is an example with OSF1/Tru64 Make.
7066 #
7067 # % cat Makefile
7068 # VPATH = sub
7069 # distdir: ../a
7070 # echo ../a
7071 # % ls
7072 # Makefile a
7073 # % make
7074 # echo a
7075 # a
7076 #
7077 # Dependency `../a' was found in `sub/../a', but this make
7078 # implementation simplified it as `a'. (Note that the sub/
7079 # directory does not even exist.)
7080 #
7081 # This kind of VPATH rewriting seems hard to cancel. The
7082 # distdir.am hack against VPATH rewriting works only when no
7083 # simplification is done, i.e., for dependencies which are in
7084 # subdirectories, not in enclosing directories. Hence, in
7085 # the latter case we use a full path to make sure no VPATH
7086 # search occurs.
7087 $fullfile = '$(srcdir)/' . $fullfile
7088 if $dir =~ m,^\.\.(?:$|/),;
7090 push_dist_common ($fullfile);
7091 return 1;
7092 }
7093 return 0;
7094 }
7097 # If a file name appears as a key in this hash, then it has already
7098 # been checked for. This allows us not to report the same error more
7099 # than once.
7100 my %required_file_not_found = ();
7102 # &require_file_internal ($WHERE, $MYSTRICT, $DIRECTORY, @FILES)
7103 # --------------------------------------------------------------
7104 # Verify that the file must exist in $DIRECTORY, or install it.
7105 # $MYSTRICT is the strictness level at which this file becomes required.
7106 sub require_file_internal ($$$@)
7107 {
7108 my ($where, $mystrict, $dir, @files) = @_;
7110 foreach my $file (@files)
7111 {
7112 my $fullfile = "$dir/$file";
7113 my $found_it = 0;
7114 my $dangling_sym = 0;
7116 if (-l $fullfile && ! -f $fullfile)
7117 {
7118 $dangling_sym = 1;
7119 }
7120 elsif (dir_has_case_matching_file ($dir, $file))
7121 {
7122 $found_it = 1;
7123 maybe_push_required_file ($dir, $file, $fullfile);
7124 }
7126 # `--force-missing' only has an effect if `--add-missing' is
7127 # specified.
7128 if ($found_it && (! $add_missing || ! $force_missing))
7129 {
7130 next;
7131 }
7132 else
7133 {
7134 # If we've already looked for it, we're done. You might
7135 # wonder why we don't do this before searching for the
7136 # file. If we do that, then something like
7137 # AC_OUTPUT(subdir/foo foo) will fail to put foo.in into
7138 # DIST_COMMON.
7139 if (! $found_it)
7140 {
7141 next if defined $required_file_not_found{$fullfile};
7142 $required_file_not_found{$fullfile} = 1;
7143 }
7145 if ($strictness >= $mystrict)
7146 {
7147 if ($dangling_sym && $add_missing)
7148 {
7149 unlink ($fullfile);
7150 }
7152 my $trailer = '';
7153 my $suppress = 0;
7155 # Only install missing files according to our desired
7156 # strictness level.
7157 my $message = "required file `$fullfile' not found";
7158 if ($add_missing)
7159 {
7160 if (-f "$libdir/$file")
7161 {
7162 $suppress = 1;
7164 # Install the missing file. Symlink if we
7165 # can, copy if we must. Note: delete the file
7166 # first, in case it is a dangling symlink.
7167 $message = "installing `$fullfile'";
7168 # Windows Perl will hang if we try to delete a
7169 # file that doesn't exist.
7170 unlink ($fullfile) if -f $fullfile;
7171 if ($symlink_exists && ! $copy_missing)
7172 {
7173 if (! symlink ("$libdir/$file", $fullfile))
7174 {
7175 $suppress = 0;
7176 $trailer = "; error while making link: $!";
7177 }
7178 }
7179 elsif (system ('cp', "$libdir/$file", $fullfile))
7180 {
7181 $suppress = 0;
7182 $trailer = "\n error while copying";
7183 }
7184 reset_dir_cache ($dir);
7185 }
7187 if (! maybe_push_required_file (dirname ($fullfile),
7188 $file, $fullfile))
7189 {
7190 if (! $found_it && ! $automake_will_process_aux_dir)
7191 {
7192 # We have added the file but could not push it
7193 # into DIST_COMMON, probably because this is
7194 # an auxiliary file and we are not processing
7195 # the top level Makefile. Furthermore Automake
7196 # hasn't been asked to create the Makefile.in
7197 # that distribute the aux dir files.
7198 error ($where, 'Please make a full run of automake'
7199 . " so $fullfile gets distributed.");
7200 }
7201 }
7202 }
7203 else
7204 {
7205 $trailer = "\n `automake --add-missing' can install `$file'"
7206 if -f "$libdir/$file";
7207 }
7209 # If --force-missing was specified, and we have
7210 # actually found the file, then do nothing.
7211 next
7212 if $found_it && $force_missing;
7214 # If we couldn' install the file, but it is a target in
7215 # the Makefile, don't print anything. This allows files
7216 # like README, AUTHORS, or THANKS to be generated.
7217 next
7218 if !$suppress && rule $file;
7220 msg ($suppress ? 'note' : 'error', $where, "$message$trailer");
7221 }
7222 }
7223 }
7224 }
7226 # &require_file ($WHERE, $MYSTRICT, @FILES)
7227 # -----------------------------------------
7228 sub require_file ($$@)
7229 {
7230 my ($where, $mystrict, @files) = @_;
7231 require_file_internal ($where, $mystrict, $relative_dir, @files);
7232 }
7234 # &require_file_with_macro ($COND, $MACRO, $MYSTRICT, @FILES)
7235 # -----------------------------------------------------------
7236 sub require_file_with_macro ($$$@)
7237 {
7238 my ($cond, $macro, $mystrict, @files) = @_;
7239 $macro = rvar ($macro) unless ref $macro;
7240 require_file ($macro->rdef ($cond)->location, $mystrict, @files);
7241 }
7243 # &require_libsource_with_macro ($COND, $MACRO, $MYSTRICT, @FILES)
7244 # ----------------------------------------------------------------
7245 # Require an AC_LIBSOURCEd file. If AC_CONFIG_LIBOBJ_DIR was called, it
7246 # must be in that directory. Otherwise expect it in the current directory.
7247 sub require_libsource_with_macro ($$$@)
7248 {
7249 my ($cond, $macro, $mystrict, @files) = @_;
7250 $macro = rvar ($macro) unless ref $macro;
7251 if ($config_libobj_dir)
7252 {
7253 require_file_internal ($macro->rdef ($cond)->location, $mystrict,
7254 $config_libobj_dir, @files);
7255 }
7256 else
7257 {
7258 require_file ($macro->rdef ($cond)->location, $mystrict, @files);
7259 }
7260 }
7262 # &require_conf_file ($WHERE, $MYSTRICT, @FILES)
7263 # ----------------------------------------------
7264 # Looks in configuration path, as specified by AC_CONFIG_AUX_DIR.
7265 sub require_conf_file ($$@)
7266 {
7267 my ($where, $mystrict, @files) = @_;
7268 require_file_internal ($where, $mystrict, $config_aux_dir, @files);
7269 }
7272 # &require_conf_file_with_macro ($COND, $MACRO, $MYSTRICT, @FILES)
7273 # ----------------------------------------------------------------
7274 sub require_conf_file_with_macro ($$$@)
7275 {
7276 my ($cond, $macro, $mystrict, @files) = @_;
7277 require_conf_file (rvar ($macro)->rdef ($cond)->location,
7278 $mystrict, @files);
7279 }
7281 ################################################################
7283 # &require_build_directory ($DIRECTORY)
7284 # ------------------------------------
7285 # Emit rules to create $DIRECTORY if needed, and return
7286 # the file that any target requiring this directory should be made
7287 # dependent upon.
7288 # We don't want to emit the rule twice, and want to reuse it
7289 # for directories with equivalent names (e.g., `foo/bar' and `./foo//bar').
7290 sub require_build_directory ($)
7291 {
7292 my $directory = shift;
7294 return $directory_map{$directory} if exists $directory_map{$directory};
7296 my $cdir = File::Spec->canonpath ($directory);
7298 if (exists $directory_map{$cdir})
7299 {
7300 my $stamp = $directory_map{$cdir};
7301 $directory_map{$directory} = $stamp;
7302 return $stamp;
7303 }
7305 my $dirstamp = "$cdir/\$(am__dirstamp)";
7307 $directory_map{$directory} = $dirstamp;
7308 $directory_map{$cdir} = $dirstamp;
7310 # Set a variable for the dirstamp basename.
7311 define_pretty_variable ('am__dirstamp', TRUE, INTERNAL,
7312 '$(am__leading_dot)dirstamp');
7314 # Directory must be removed by `make distclean'.
7315 $clean_files{$dirstamp} = DIST_CLEAN;
7317 $output_rules .= ("$dirstamp:\n"
7318 . "\t\@\$(mkdir_p) $directory\n"
7319 . "\t\@: > $dirstamp\n");
7321 return $dirstamp;
7322 }
7324 # &require_build_directory_maybe ($FILE)
7325 # --------------------------------------
7326 # If $FILE lies in a subdirectory, emit a rule to create this
7327 # directory and return the file that $FILE should be made
7328 # dependent upon. Otherwise, just return the empty string.
7329 sub require_build_directory_maybe ($)
7330 {
7331 my $file = shift;
7332 my $directory = dirname ($file);
7334 if ($directory ne '.')
7335 {
7336 return require_build_directory ($directory);
7337 }
7338 else
7339 {
7340 return '';
7341 }
7342 }
7344 ################################################################
7346 # Push a list of files onto dist_common.
7347 sub push_dist_common
7348 {
7349 prog_error "push_dist_common run after handle_dist"
7350 if $handle_dist_run;
7351 Automake::Variable::define ('DIST_COMMON', VAR_AUTOMAKE, '+', TRUE, "@_",
7352 '', INTERNAL, VAR_PRETTY);
7353 }
7356 ################################################################
7358 # generate_makefile ($MAKEFILE_AM, $MAKEFILE_IN)
7359 # ----------------------------------------------
7360 # Generate a Makefile.in given the name of the corresponding Makefile and
7361 # the name of the file output by config.status.
7362 sub generate_makefile ($$)
7363 {
7364 my ($makefile_am, $makefile_in) = @_;
7366 # Reset all the Makefile.am related variables.
7367 initialize_per_input;
7369 # AUTOMAKE_OPTIONS can contains -W flags to disable or enable
7370 # warnings for this file. So hold any warning issued before
7371 # we have processed AUTOMAKE_OPTIONS.
7372 buffer_messages ('warning');
7374 # Name of input file ("Makefile.am") and output file
7375 # ("Makefile.in"). These have no directory components.
7376 $am_file_name = basename ($makefile_am);
7377 $in_file_name = basename ($makefile_in);
7379 # $OUTPUT is encoded. If it contains a ":" then the first element
7380 # is the real output file, and all remaining elements are input
7381 # files. We don't scan or otherwise deal with these input files,
7382 # other than to mark them as dependencies. See
7383 # &scan_autoconf_files for details.
7384 my ($makefile, @inputs) = split (/:/, $output_files{$makefile_in});
7386 $relative_dir = dirname ($makefile);
7387 $am_relative_dir = dirname ($makefile_am);
7388 $topsrcdir = backname ($relative_dir);
7390 read_main_am_file ($makefile_am);
7391 if (handle_options)
7392 {
7393 # Process buffered warnings.
7394 flush_messages;
7395 # Fatal error. Just return, so we can continue with next file.
7396 return;
7397 }
7398 # Process buffered warnings.
7399 flush_messages;
7401 # There are a few install-related variables that you should not define.
7402 foreach my $var ('PRE_INSTALL', 'POST_INSTALL', 'NORMAL_INSTALL')
7403 {
7404 my $v = var $var;
7405 if ($v)
7406 {
7407 my $def = $v->def (TRUE);
7408 prog_error "$var not defined in condition TRUE"
7409 unless $def;
7410 reject_var $var, "`$var' should not be defined"
7411 if $def->owner != VAR_AUTOMAKE;
7412 }
7413 }
7415 # Catch some obsolete variables.
7416 msg_var ('obsolete', 'INCLUDES',
7417 "`INCLUDES' is the old name for `AM_CPPFLAGS' (or `*_CPPFLAGS')")
7418 if var ('INCLUDES');
7420 # Must do this after reading .am file.
7421 define_variable ('subdir', $relative_dir, INTERNAL);
7423 # If DIST_SUBDIRS is defined, make sure SUBDIRS is, so that
7424 # recursive rules are enabled.
7425 define_pretty_variable ('SUBDIRS', TRUE, INTERNAL, '')
7426 if var 'DIST_SUBDIRS' && ! var 'SUBDIRS';
7428 # Check first, because we might modify some state.
7429 check_cygnus;
7430 check_gnu_standards;
7431 check_gnits_standards;
7433 handle_configure ($makefile_am, $makefile_in, $makefile, @inputs);
7434 handle_gettext;
7435 handle_libraries;
7436 handle_ltlibraries;
7437 handle_programs;
7438 handle_scripts;
7440 # These must be run after all the sources are scanned. They
7441 # use variables defined by &handle_libraries, &handle_ltlibraries,
7442 # or &handle_programs.
7443 handle_compile;
7444 handle_languages;
7445 handle_libtool;
7447 # Variables used by distdir.am and tags.am.
7448 define_pretty_variable ('SOURCES', TRUE, INTERNAL, @sources);
7449 if (! option 'no-dist')
7450 {
7451 define_pretty_variable ('DIST_SOURCES', TRUE, INTERNAL, @dist_sources);
7452 }
7454 handle_multilib;
7455 handle_texinfo;
7456 handle_emacs_lisp;
7457 handle_python;
7458 handle_java;
7459 handle_man_pages;
7460 handle_data;
7461 handle_headers;
7462 handle_subdirs;
7463 handle_tags;
7464 handle_minor_options;
7465 # Must come after handle_programs so that %known_programs is up-to-date.
7466 handle_tests;
7468 # This must come after most other rules.
7469 handle_dist;
7471 handle_footer;
7472 do_check_merge_target;
7473 handle_all ($makefile);
7475 # FIXME: Gross!
7476 if (var ('lib_LTLIBRARIES') && var ('bin_PROGRAMS'))
7477 {
7478 $output_rules .= "install-binPROGRAMS: install-libLTLIBRARIES\n\n";
7479 }
7481 handle_install;
7482 handle_clean ($makefile);
7483 handle_factored_dependencies;
7485 # Comes last, because all the above procedures may have
7486 # defined or overridden variables.
7487 $output_vars .= output_variables;
7489 check_typos;
7491 my ($out_file) = $output_directory . '/' . $makefile_in;
7493 if ($exit_code != 0)
7494 {
7495 verb "not writing $out_file because of earlier errors";
7496 return;
7497 }
7499 if (! -d ($output_directory . '/' . $am_relative_dir))
7500 {
7501 mkdir ($output_directory . '/' . $am_relative_dir, 0755);
7502 }
7504 # We make sure that `all:' is the first target.
7505 my $output =
7506 "$output_vars$output_all$output_header$output_rules$output_trailer";
7508 # Decide whether we must update the output file or not.
7509 # We have to update in the following situations.
7510 # * $force_generation is set.
7511 # * any of the output dependencies is younger than the output
7512 # * the contents of the output is different (this can happen
7513 # if the project has been populated with a file listed in
7514 # @common_files since the last run).
7515 # Output's dependencies are split in two sets:
7516 # * dependencies which are also configure dependencies
7517 # These do not change between each Makefile.am
7518 # * other dependencies, specific to the Makefile.am being processed
7519 # (such as the Makefile.am itself, or any Makefile fragment
7520 # it includes).
7521 my $timestamp = mtime $out_file;
7522 if (! $force_generation
7523 && $configure_deps_greatest_timestamp < $timestamp
7524 && $output_deps_greatest_timestamp < $timestamp
7525 && $output eq contents ($out_file))
7526 {
7527 verb "$out_file unchanged";
7528 # No need to update.
7529 return;
7530 }
7532 if (-e $out_file)
7533 {
7534 unlink ($out_file)
7535 or fatal "cannot remove $out_file: $!\n";
7536 }
7538 my $gm_file = new Automake::XFile "> $out_file";
7539 verb "creating $out_file";
7540 print $gm_file $output;
7541 }
7543 ################################################################
7548 ################################################################
7550 # Print usage information.
7551 sub usage ()
7552 {
7553 print "Usage: $0 [OPTION] ... [Makefile]...
7555 Generate Makefile.in for configure from Makefile.am.
7557 Operation modes:
7558 --help print this help, then exit
7559 --version print version number, then exit
7560 -v, --verbose verbosely list files processed
7561 --no-force only update Makefile.in's that are out of date
7562 -W, --warnings=CATEGORY report the warnings falling in CATEGORY
7564 Dependency tracking:
7565 -i, --ignore-deps disable dependency tracking code
7566 --include-deps enable dependency tracking code
7568 Flavors:
7569 --cygnus assume program is part of Cygnus-style tree
7570 --foreign set strictness to foreign
7571 --gnits set strictness to gnits
7572 --gnu set strictness to gnu
7574 Library files:
7575 -a, --add-missing add missing standard files to package
7576 --libdir=DIR directory storing library files
7577 -c, --copy with -a, copy missing files (default is symlink)
7578 -f, --force-missing force update of standard files
7580 ";
7581 Automake::ChannelDefs::usage;
7583 my ($last, @lcomm);
7584 $last = '';
7585 foreach my $iter (sort ((@common_files, @common_sometimes)))
7586 {
7587 push (@lcomm, $iter) unless $iter eq $last;
7588 $last = $iter;
7589 }
7591 my @four;
7592 print "\nFiles which are automatically distributed, if found:\n";
7593 format USAGE_FORMAT =
7594 @<<<<<<<<<<<<<<<< @<<<<<<<<<<<<<<<< @<<<<<<<<<<<<<<<< @<<<<<<<<<<<<<<<<
7595 $four[0], $four[1], $four[2], $four[3]
7596 .
7597 $~ = "USAGE_FORMAT";
7599 my $cols = 4;
7600 my $rows = int(@lcomm / $cols);
7601 my $rest = @lcomm % $cols;
7603 if ($rest)
7604 {
7605 $rows++;
7606 }
7607 else
7608 {
7609 $rest = $cols;
7610 }
7612 for (my $y = 0; $y < $rows; $y++)
7613 {
7614 @four = ("", "", "", "");
7615 for (my $x = 0; $x < $cols; $x++)
7616 {
7617 last if $y + 1 == $rows && $x == $rest;
7619 my $idx = (($x > $rest)
7620 ? ($rows * $rest + ($rows - 1) * ($x - $rest))
7621 : ($rows * $x));
7623 $idx += $y;
7624 $four[$x] = $lcomm[$idx];
7625 }
7626 write;
7627 }
7629 print "\nReport bugs to <bug-automake\@gnu.org>.\n";
7631 # --help always returns 0 per GNU standards.
7632 exit 0;
7633 }
7636 # &version ()
7637 # -----------
7638 # Print version information
7639 sub version ()
7640 {
7641 print <<EOF;
7642 automake (GNU $PACKAGE) $VERSION
7643 Written by Tom Tromey <tromey\@redhat.com>
7644 and Alexandre Duret-Lutz <adl\@gnu.org>.
7646 Copyright 2006 Free Software Foundation, Inc.
7647 This is free software; see the source for copying conditions. There is NO
7648 warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
7649 EOF
7650 # --version always returns 0 per GNU standards.
7651 exit 0;
7652 }
7654 ################################################################
7656 # Parse command line.
7657 sub parse_arguments ()
7658 {
7659 # Start off as gnu.
7660 set_strictness ('gnu');
7662 my $cli_where = new Automake::Location;
7663 my %cli_options =
7664 (
7665 'libdir=s' => \$libdir,
7666 'gnu' => sub { set_strictness ('gnu'); },
7667 'gnits' => sub { set_strictness ('gnits'); },
7668 'cygnus' => sub { set_global_option ('cygnus', $cli_where); },
7669 'foreign' => sub { set_strictness ('foreign'); },
7670 'include-deps' => sub { unset_global_option ('no-dependencies'); },
7671 'i|ignore-deps' => sub { set_global_option ('no-dependencies',
7672 $cli_where); },
7673 'no-force' => sub { $force_generation = 0; },
7674 'f|force-missing' => \$force_missing,
7675 'o|output-dir=s' => \$output_directory,
7676 'a|add-missing' => \$add_missing,
7677 'c|copy' => \$copy_missing,
7678 'v|verbose' => sub { setup_channel 'verb', silent => 0; },
7679 'W|warnings=s' => \&parse_warnings,
7680 # These long options (--Werror and --Wno-error) for backward
7681 # compatibility. Use -Werror and -Wno-error today.
7682 'Werror' => sub { parse_warnings 'W', 'error'; },
7683 'Wno-error' => sub { parse_warnings 'W', 'no-error'; },
7684 );
7685 use Getopt::Long;
7686 Getopt::Long::config ("bundling", "pass_through");
7688 # See if --version or --help is used. We want to process these before
7689 # anything else because the GNU Coding Standards require us to
7690 # `exit 0' after processing these options, and we can't guarantee this
7691 # if we treat other options first. (Handling other options first
7692 # could produce error diagnostics, and in this condition it is
7693 # confusing if Automake does `exit 0'.)
7694 my %cli_options_1st_pass =
7695 (
7696 'version' => \&version,
7697 'help' => \&usage,
7698 # Recognize all other options (and their arguments) but do nothing.
7699 map { $_ => sub {} } (keys %cli_options)
7700 );
7701 my @ARGV_backup = @ARGV;
7702 Getopt::Long::GetOptions %cli_options_1st_pass
7703 or exit 1;
7704 @ARGV = @ARGV_backup;
7706 # Now *really* process the options. This time we know that --help
7707 # and --version are not present, but we specify them nonetheless so
7708 # that ambiguous abbreviation are diagnosed.
7709 Getopt::Long::GetOptions %cli_options, 'version' => sub {}, 'help' => sub {}
7710 or exit 1;
7712 if (defined $output_directory)
7713 {
7714 msg 'obsolete', "`--output-dir' is deprecated\n";
7715 }
7716 else
7717 {
7718 # In the next release we'll remove this entirely.
7719 $output_directory = '.';
7720 }
7722 return unless @ARGV;
7724 if ($ARGV[0] =~ /^-./)
7725 {
7726 my %argopts;
7727 for my $k (keys %cli_options)
7728 {
7729 if ($k =~ /(.*)=s$/)
7730 {
7731 map { $argopts{(length ($_) == 1)
7732 ? "-$_" : "--$_" } = 1; } (split (/\|/, $1));
7733 }
7734 }
7735 if ($ARGV[0] eq '--')
7736 {
7737 shift @ARGV;
7738 }
7739 elsif (exists $argopts{$ARGV[0]})
7740 {
7741 fatal ("option `$ARGV[0]' requires an argument\n"
7742 . "Try `$0 --help' for more information.");
7743 }
7744 else
7745 {
7746 fatal ("unrecognized option `$ARGV[0]'.\n"
7747 . "Try `$0 --help' for more information.");
7748 }
7749 }
7751 my $errspec = 0;
7752 foreach my $arg (@ARGV)
7753 {
7754 fatal ("empty argument\nTry `$0 --help' for more information.")
7755 if ($arg eq '');
7757 # Handle $local:$input syntax.
7758 my ($local, @rest) = split (/:/, $arg);
7759 @rest = ("$local.in",) unless @rest;
7760 my $input = locate_am @rest;
7761 if ($input)
7762 {
7763 push @input_files, $input;
7764 $output_files{$input} = join (':', ($local, @rest));
7765 }
7766 else
7767 {
7768 error "no Automake input file found for `$arg'";
7769 $errspec = 1;
7770 }
7771 }
7772 fatal "no input file found among supplied arguments"
7773 if $errspec && ! @input_files;
7774 }
7776 ################################################################
7778 # Parse the WARNINGS environment variable.
7779 parse_WARNINGS;
7781 # Parse command line.
7782 parse_arguments;
7784 $configure_ac = require_configure_ac;
7786 # Do configure.ac scan only once.
7787 scan_autoconf_files;
7789 if (! @input_files)
7790 {
7791 my $msg = '';
7792 $msg = "\nDid you forget AC_CONFIG_FILES([Makefile]) in $configure_ac?"
7793 if -f 'Makefile.am';
7794 fatal ("no `Makefile.am' found for any configure output$msg");
7795 }
7797 # Now do all the work on each file.
7798 foreach my $file (@input_files)
7799 {
7800 ($am_file = $file) =~ s/\.in$//;
7801 if (! -f ($am_file . '.am'))
7802 {
7803 error "`$am_file.am' does not exist";
7804 }
7805 else
7806 {
7807 # Any warning setting now local to this Makefile.am.
7808 dup_channel_setup;
7810 generate_makefile ($am_file . '.am', $file);
7812 # Back out any warning setting.
7813 drop_channel_setup;
7814 }
7815 }
7817 exit $exit_code;
7820 ### Setup "GNU" style for perl-mode and cperl-mode.
7821 ## Local Variables:
7822 ## perl-indent-level: 2
7823 ## perl-continued-statement-offset: 2
7824 ## perl-continued-brace-offset: 0
7825 ## perl-brace-offset: 0
7826 ## perl-brace-imaginary-offset: 0
7827 ## perl-label-offset: -2
7828 ## cperl-indent-level: 2
7829 ## cperl-brace-offset: 0
7830 ## cperl-continued-brace-offset: 0
7831 ## cperl-label-offset: -2
7832 ## cperl-extra-newline-before-brace: t
7833 ## cperl-merge-trailing-else: nil
7834 ## cperl-continued-statement-offset: 2
7835 ## End: