| blob | 796f17d83b777c8b54fdf70c32749e3b46448998 |
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, 2007, 2008 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 3, 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, see <http://www.gnu.org/licenses/>.
25 # Originally written by David Mackenzie <djm@gnu.ai.mit.edu>.
26 # Perl reimplementation by Tom Tromey <tromey@redhat.com>, and
27 # Alexandre Duret-Lutz <adl@gnu.org>.
29 package Language;
31 BEGIN
32 {
33 my $perllibdir = $ENV{'perllibdir'} || '@datadir@/@PACKAGE@-@APIVERSION@';
34 unshift @INC, (split '@PATH_SEPARATOR@', $perllibdir);
36 # Override SHELL. This is required on DJGPP so that system() uses
37 # bash, not COMMAND.COM which doesn't quote arguments properly.
38 # Other systems aren't expected to use $SHELL when Automake
39 # runs, but it should be safe to drop the `if DJGPP' guard if
40 # it turns up other systems need the same thing. After all,
41 # if SHELL is used, ./configure's SHELL is always better than
42 # the user's SHELL (which may be something like tcsh).
43 $ENV{'SHELL'} = '@SHELL@' if exists $ENV{'DJGPP'};
44 }
46 use Automake::Struct;
47 struct (# Short name of the language (c, f77...).
48 'name' => "\$",
49 # Nice name of the language (C, Fortran 77...).
50 'Name' => "\$",
52 # List of configure variables which must be defined.
53 'config_vars' => '@',
55 'ansi' => "\$",
56 # `pure' is `1' or `'. A `pure' language is one where, if
57 # all the files in a directory are of that language, then we
58 # do not require the C compiler or any code to call it.
59 'pure' => "\$",
61 'autodep' => "\$",
63 # Name of the compiling variable (COMPILE).
64 'compiler' => "\$",
65 # Content of the compiling variable.
66 'compile' => "\$",
67 # Flag to require compilation without linking (-c).
68 'compile_flag' => "\$",
69 'extensions' => '@',
70 # A subroutine to compute a list of possible extensions of
71 # the product given the input extensions.
72 # (defaults to a subroutine which returns ('.$(OBJEXT)', '.lo'))
73 'output_extensions' => "\$",
74 # A list of flag variables used in 'compile'.
75 # (defaults to [])
76 'flags' => "@",
78 # Any tag to pass to libtool while compiling.
79 'libtool_tag' => "\$",
81 # The file to use when generating rules for this language.
82 # The default is 'depend2'.
83 'rule_file' => "\$",
85 # Name of the linking variable (LINK).
86 'linker' => "\$",
87 # Content of the linking variable.
88 'link' => "\$",
90 # Name of the linker variable (LD).
91 'lder' => "\$",
92 # Content of the linker variable ($(CC)).
93 'ld' => "\$",
95 # Flag to specify the output file (-o).
96 'output_flag' => "\$",
97 '_finish' => "\$",
99 # This is a subroutine which is called whenever we finally
100 # determine the context in which a source file will be
101 # compiled.
102 '_target_hook' => "\$",
104 # If TRUE, nodist_ sources will be compiled using specific rules
105 # (i.e. not inference rules). The default is FALSE.
106 'nodist_specific' => "\$");
109 sub finish ($)
110 {
111 my ($self) = @_;
112 if (defined $self->_finish)
113 {
114 &{$self->_finish} ();
115 }
116 }
118 sub target_hook ($$$$%)
119 {
120 my ($self) = @_;
121 if (defined $self->_target_hook)
122 {
123 &{$self->_target_hook} (@_);
124 }
125 }
127 package Automake;
129 use strict;
130 use Automake::Config;
131 use Automake::General;
132 use Automake::XFile;
133 use Automake::Channels;
134 use Automake::ChannelDefs;
135 use Automake::Configure_ac;
136 use Automake::FileUtils;
137 use Automake::Location;
138 use Automake::Condition qw/TRUE FALSE/;
139 use Automake::DisjConditions;
140 use Automake::Options;
141 use Automake::Version;
142 use Automake::Variable;
143 use Automake::VarDef;
144 use Automake::Rule;
145 use Automake::RuleDef;
146 use Automake::Wrap 'makefile_wrap';
147 use File::Basename;
148 use File::Spec;
149 use Carp;
151 ## ----------- ##
152 ## Constants. ##
153 ## ----------- ##
155 # Some regular expressions. One reason to put them here is that it
156 # makes indentation work better in Emacs.
158 # Writing singled-quoted-$-terminated regexes is a pain because
159 # perl-mode thinks of $' as the ${'} variable (instead of a $ followed
160 # by a closing quote. Letting perl-mode think the quote is not closed
161 # leads to all sort of misindentations. On the other hand, defining
162 # regexes as double-quoted strings is far less readable. So usually
163 # we will write:
164 #
165 # $REGEX = '^regex_value' . "\$";
167 my $IGNORE_PATTERN = '^\s*##([^#\n].*)?\n';
168 my $WHITE_PATTERN = '^\s*' . "\$";
169 my $COMMENT_PATTERN = '^#';
170 my $TARGET_PATTERN='[$a-zA-Z0-9_.@%][-.a-zA-Z0-9_(){}/$+@%]*';
171 # A rule has three parts: a list of targets, a list of dependencies,
172 # and optionally actions.
173 my $RULE_PATTERN =
174 "^($TARGET_PATTERN(?:(?:\\\\\n|\\s)+$TARGET_PATTERN)*) *:([^=].*|)\$";
176 # Only recognize leading spaces, not leading tabs. If we recognize
177 # leading tabs here then we need to make the reader smarter, because
178 # otherwise it will think rules like `foo=bar; \' are errors.
179 my $ASSIGNMENT_PATTERN = '^ *([^ \t=:+]*)\s*([:+]?)=\s*(.*)' . "\$";
180 # This pattern recognizes a Gnits version id and sets $1 if the
181 # release is an alpha release. We also allow a suffix which can be
182 # used to extend the version number with a "fork" identifier.
183 my $GNITS_VERSION_PATTERN = '\d+\.\d+([a-z]|\.\d+)?(-[A-Za-z0-9]+)?';
185 my $IF_PATTERN = '^if\s+(!?)\s*([A-Za-z][A-Za-z0-9_]*)\s*(?:#.*)?' . "\$";
186 my $ELSE_PATTERN =
187 '^else(?:\s+(!?)\s*([A-Za-z][A-Za-z0-9_]*))?\s*(?:#.*)?' . "\$";
188 my $ENDIF_PATTERN =
189 '^endif(?:\s+(!?)\s*([A-Za-z][A-Za-z0-9_]*))?\s*(?:#.*)?' . "\$";
190 my $PATH_PATTERN = '(\w|[+/.-])+';
191 # This will pass through anything not of the prescribed form.
192 my $INCLUDE_PATTERN = ('^include\s+'
193 . '((\$\(top_srcdir\)/' . $PATH_PATTERN . ')'
194 . '|(\$\(srcdir\)/' . $PATH_PATTERN . ')'
195 . '|([^/\$]' . $PATH_PATTERN . '))\s*(#.*)?' . "\$");
197 # Match `-d' as a command-line argument in a string.
198 my $DASH_D_PATTERN = "(^|\\s)-d(\\s|\$)";
199 # Directories installed during 'install-exec' phase.
200 my $EXEC_DIR_PATTERN =
201 '^(?:bin|sbin|libexec|sysconf|localstate|lib|pkglib|.*exec.*)' . "\$";
203 # Values for AC_CANONICAL_*
204 use constant AC_CANONICAL_BUILD => 1;
205 use constant AC_CANONICAL_HOST => 2;
206 use constant AC_CANONICAL_TARGET => 3;
208 # Values indicating when something should be cleaned.
209 use constant MOSTLY_CLEAN => 0;
210 use constant CLEAN => 1;
211 use constant DIST_CLEAN => 2;
212 use constant MAINTAINER_CLEAN => 3;
214 # Libtool files.
215 my @libtool_files = qw(ltmain.sh config.guess config.sub);
216 # ltconfig appears here for compatibility with old versions of libtool.
217 my @libtool_sometimes = qw(ltconfig ltcf-c.sh ltcf-cxx.sh ltcf-gcj.sh);
219 # Commonly found files we look for and automatically include in
220 # DISTFILES.
221 my @common_files =
222 (qw(ABOUT-GNU ABOUT-NLS AUTHORS BACKLOG COPYING COPYING.DOC COPYING.LIB
223 COPYING.LESSER ChangeLog INSTALL NEWS README THANKS TODO
224 ansi2knr.1 ansi2knr.c compile config.guess config.rpath config.sub
225 depcomp elisp-comp install-sh libversion.in mdate-sh missing
226 mkinstalldirs py-compile texinfo.tex ylwrap),
227 @libtool_files, @libtool_sometimes);
229 # Commonly used files we auto-include, but only sometimes. This list
230 # is used for the --help output only.
231 my @common_sometimes =
232 qw(aclocal.m4 acconfig.h config.h.top config.h.bot configure
233 configure.ac configure.in stamp-vti);
235 # Standard directories from the GNU Coding Standards, and additional
236 # pkg* directories from Automake. Stored in a hash for fast member check.
237 my %standard_prefix =
238 map { $_ => 1 } (qw(bin data dataroot dvi exec html include info
239 lib libexec lisp localstate man man1 man2 man3
240 man4 man5 man6 man7 man8 man9 oldinclude pdf
241 pkgdatadir pkgincludedir pkglibdir pkglibexecdir
242 ps sbin sharedstate sysconf));
244 # Copyright on generated Makefile.ins.
245 my $gen_copyright = "\
246 # Copyright (C) 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002,
247 # 2003, 2004, 2005, 2006, 2007, 2008 Free Software Foundation, Inc.
248 # This Makefile.in is free software; the Free Software Foundation
249 # gives unlimited permission to copy and/or distribute it,
250 # with or without modifications, as long as this notice is preserved.
252 # This program is distributed in the hope that it will be useful,
253 # but WITHOUT ANY WARRANTY, to the extent permitted by law; without
254 # even the implied warranty of MERCHANTABILITY or FITNESS FOR A
255 # PARTICULAR PURPOSE.
256 ";
258 # These constants are returned by the lang_*_rewrite functions.
259 # LANG_SUBDIR means that the resulting object file should be in a
260 # subdir if the source file is. In this case the file name cannot
261 # have `..' components.
262 use constant LANG_IGNORE => 0;
263 use constant LANG_PROCESS => 1;
264 use constant LANG_SUBDIR => 2;
266 # These are used when keeping track of whether an object can be built
267 # by two different paths.
268 use constant COMPILE_LIBTOOL => 1;
269 use constant COMPILE_ORDINARY => 2;
271 # We can't always associate a location to a variable or a rule,
272 # when it's defined by Automake. We use INTERNAL in this case.
273 use constant INTERNAL => new Automake::Location;
274 \f
276 ## ---------------------------------- ##
277 ## Variables related to the options. ##
278 ## ---------------------------------- ##
280 # TRUE if we should always generate Makefile.in.
281 my $force_generation = 1;
283 # From the Perl manual.
284 my $symlink_exists = (eval 'symlink ("", "");', $@ eq '');
286 # TRUE if missing standard files should be installed.
287 my $add_missing = 0;
289 # TRUE if we should copy missing files; otherwise symlink if possible.
290 my $copy_missing = 0;
292 # TRUE if we should always update files that we know about.
293 my $force_missing = 0;
296 ## ---------------------------------------- ##
297 ## Variables filled during files scanning. ##
298 ## ---------------------------------------- ##
300 # Name of the configure.ac file.
301 my $configure_ac;
303 # Files found by scanning configure.ac for LIBOBJS.
304 my %libsources = ();
306 # Names used in AC_CONFIG_HEADER call.
307 my @config_headers = ();
309 # Names used in AC_CONFIG_LINKS call.
310 my @config_links = ();
312 # Directory where output files go. Actually, output files are
313 # relative to this directory.
314 my $output_directory;
316 # List of Makefile.am's to process, and their corresponding outputs.
317 my @input_files = ();
318 my %output_files = ();
320 # Complete list of Makefile.am's that exist.
321 my @configure_input_files = ();
323 # List of files in AC_CONFIG_FILES/AC_OUTPUT without Makefile.am's,
324 # and their outputs.
325 my @other_input_files = ();
326 # Where each AC_CONFIG_FILES/AC_OUTPUT/AC_CONFIG_LINK/AC_CONFIG_HEADER appears.
327 # The keys are the files created by these macros.
328 my %ac_config_files_location = ();
329 # The condition under which AC_CONFIG_FOOS appears.
330 my %ac_config_files_condition = ();
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;
352 # Whether AM_GNU_GETTEXT_INTL_SUBDIR has been seen.
353 my $seen_gettext_intl = 0;
355 # Lists of tags supported by Libtool.
356 my %libtool_tags = ();
357 # 1 if Libtool uses LT_SUPPORTED_TAG. If it does, then it also
358 # uses AC_REQUIRE_AUX_FILE.
359 my $libtool_new_api = 0;
361 # Most important AC_CANONICAL_* macro seen so far.
362 my $seen_canonical = 0;
363 # Location of that macro.
364 my $canonical_location;
366 # Where AM_MAINTAINER_MODE appears.
367 my $seen_maint_mode;
369 # Actual version we've seen.
370 my $package_version = '';
372 # Where version is defined.
373 my $package_version_location;
375 # TRUE if we've seen AM_ENABLE_MULTILIB.
376 my $seen_multilib = 0;
378 # TRUE if we've seen AM_PROG_CC_C_O
379 my $seen_cc_c_o = 0;
381 # Location of AC_REQUIRE_AUX_FILE calls, indexed by their argument.
382 my %required_aux_file = ();
384 # Where AM_INIT_AUTOMAKE is called;
385 my $seen_init_automake = 0;
387 # TRUE if we've seen AM_AUTOMAKE_VERSION.
388 my $seen_automake_version = 0;
390 # Hash table of discovered configure substitutions. Keys are names,
391 # values are `FILE:LINE' strings which are used by error message
392 # generation.
393 my %configure_vars = ();
395 # Ignored configure substitutions (i.e., variables not to be output in
396 # Makefile.in)
397 my %ignored_configure_vars = ();
399 # Files included by $configure_ac.
400 my @configure_deps = ();
402 # Greatest timestamp of configure's dependencies.
403 my $configure_deps_greatest_timestamp = 0;
405 # Hash table of AM_CONDITIONAL variables seen in configure.
406 my %configure_cond = ();
408 # This maps extensions onto language names.
409 my %extension_map = ();
411 # List of the DIST_COMMON files we discovered while reading
412 # configure.in
413 my $configure_dist_common = '';
415 # This maps languages names onto objects.
416 my %languages = ();
417 # Maps each linker variable onto a language object.
418 my %link_languages = ();
420 # maps extensions to needed source flags.
421 my %sourceflags = ();
423 # List of targets we must always output.
424 # FIXME: Complete, and remove falsely required targets.
425 my %required_targets =
426 (
427 'all' => 1,
428 'dvi' => 1,
429 'pdf' => 1,
430 'ps' => 1,
431 'info' => 1,
432 'install-info' => 1,
433 'install' => 1,
434 'install-data' => 1,
435 'install-exec' => 1,
436 'uninstall' => 1,
438 # FIXME: Not required, temporary hacks.
439 # Well, actually they are sort of required: the -recursive
440 # targets will run them anyway...
441 'dvi-am' => 1,
442 'pdf-am' => 1,
443 'ps-am' => 1,
444 'info-am' => 1,
445 'install-data-am' => 1,
446 'install-exec-am' => 1,
447 'installcheck-am' => 1,
448 'uninstall-am' => 1,
450 'install-man' => 1,
451 );
453 # Set to 1 if this run will create the Makefile.in that distribute
454 # the files in config_aux_dir.
455 my $automake_will_process_aux_dir = 0;
457 # The name of the Makefile currently being processed.
458 my $am_file = 'BUG';
459 \f
461 ################################################################
463 ## ------------------------------------------ ##
464 ## Variables reset by &initialize_per_input. ##
465 ## ------------------------------------------ ##
467 # Basename and relative dir of the input file.
468 my $am_file_name;
469 my $am_relative_dir;
471 # Same but wrt Makefile.in.
472 my $in_file_name;
473 my $relative_dir;
475 # Relative path to the top directory.
476 my $topsrcdir;
478 # Greatest timestamp of the output's dependencies (excluding
479 # configure's dependencies).
480 my $output_deps_greatest_timestamp;
482 # These two variables are used when generating each Makefile.in.
483 # They hold the Makefile.in until it is ready to be printed.
484 my $output_rules;
485 my $output_vars;
486 my $output_trailer;
487 my $output_all;
488 my $output_header;
490 # This is the conditional stack, updated on if/else/endif, and
491 # used to build Condition objects.
492 my @cond_stack;
494 # This holds the set of included files.
495 my @include_stack;
497 # List of dependencies for the obvious targets.
498 my @all;
499 my @check;
500 my @check_tests;
502 # Keys in this hash table are files to delete. The associated
503 # value tells when this should happen (MOSTLY_CLEAN, DIST_CLEAN, etc.)
504 my %clean_files;
506 # Keys in this hash table are object files or other files in
507 # subdirectories which need to be removed. This only holds files
508 # which are created by compilations. The value in the hash indicates
509 # when the file should be removed.
510 my %compile_clean_files;
512 # Keys in this hash table are directories where we expect to build a
513 # libtool object. We use this information to decide what directories
514 # to delete.
515 my %libtool_clean_directories;
517 # Value of `$(SOURCES)', used by tags.am.
518 my @sources;
519 # Sources which go in the distribution.
520 my @dist_sources;
522 # This hash maps object file names onto their corresponding source
523 # file names. This is used to ensure that each object is created
524 # by a single source file.
525 my %object_map;
527 # This hash maps object file names onto an integer value representing
528 # whether this object has been built via ordinary compilation or
529 # libtool compilation (the COMPILE_* constants).
530 my %object_compilation_map;
533 # This keeps track of the directories for which we've already
534 # created dirstamp code. Keys are directories, values are stamp files.
535 # Several keys can share the same stamp files if they are equivalent
536 # (as are `.//foo' and `foo').
537 my %directory_map;
539 # All .P files.
540 my %dep_files;
542 # This is a list of all targets to run during "make dist".
543 my @dist_targets;
545 # Keep track of all programs declared in this Makefile, without
546 # $(EXEEXT). @substitution@ are not listed.
547 my %known_programs;
549 # Keys in this hash are the basenames of files which must depend on
550 # ansi2knr. Values are either the empty string, or the directory in
551 # which the ANSI source file appears; the directory must have a
552 # trailing `/'.
553 my %de_ansi_files;
555 # This is the name of the redirect `all' target to use.
556 my $all_target;
558 # This keeps track of which extensions we've seen (that we care
559 # about).
560 my %extension_seen;
562 # This is random scratch space for the language finish functions.
563 # Don't randomly overwrite it; examine other uses of keys first.
564 my %language_scratch;
566 # We keep track of which objects need special (per-executable)
567 # handling on a per-language basis.
568 my %lang_specific_files;
570 # This is set when `handle_dist' has finished. Once this happens,
571 # we should no longer push on dist_common.
572 my $handle_dist_run;
574 # Used to store a set of linkers needed to generate the sources currently
575 # under consideration.
576 my %linkers_used;
578 # True if we need `LINK' defined. This is a hack.
579 my $need_link;
581 # Was get_object_extension run?
582 # FIXME: This is a hack. a better switch should be found.
583 my $get_object_extension_was_run;
585 # Record each file processed by make_paragraphs.
586 my %transformed_files;
588 # Cache each file processed by make_paragraphs.
589 # (This is different from %transformed_files because
590 # %transformed_files is reset for each file while %am_file_cache
591 # it global to the run.)
592 my %am_file_cache;
594 ################################################################
596 # var_SUFFIXES_trigger ($TYPE, $VALUE)
597 # ------------------------------------
598 # This is called by Automake::Variable::define() when SUFFIXES
599 # is defined ($TYPE eq '') or appended ($TYPE eq '+').
600 # The work here needs to be performed as a side-effect of the
601 # macro_define() call because SUFFIXES definitions impact
602 # on $KNOWN_EXTENSIONS_PATTERN which is used used when parsing
603 # the input am file.
604 sub var_SUFFIXES_trigger ($$)
605 {
606 my ($type, $value) = @_;
607 accept_extensions (split (' ', $value));
608 }
609 Automake::Variable::hook ('SUFFIXES', \&var_SUFFIXES_trigger);
611 ################################################################
613 ## --------------------------------- ##
614 ## Forward subroutine declarations. ##
615 ## --------------------------------- ##
616 sub register_language (%);
617 sub file_contents_internal ($$$%);
618 sub define_files_variable ($\@$$);
621 # &initialize_per_input ()
622 # ------------------------
623 # (Re)-Initialize per-Makefile.am variables.
624 sub initialize_per_input ()
625 {
626 reset_local_duplicates ();
628 $am_file_name = '';
629 $am_relative_dir = '';
631 $in_file_name = '';
632 $relative_dir = '';
634 $output_deps_greatest_timestamp = 0;
636 $output_rules = '';
637 $output_vars = '';
638 $output_trailer = '';
639 $output_all = '';
640 $output_header = '';
642 Automake::Options::reset;
643 Automake::Variable::reset;
644 Automake::Rule::reset;
646 @cond_stack = ();
648 @include_stack = ();
650 @all = ();
651 @check = ();
652 @check_tests = ();
654 %clean_files = ();
656 @sources = ();
657 @dist_sources = ();
659 %object_map = ();
660 %object_compilation_map = ();
662 %directory_map = ();
664 %dep_files = ();
666 @dist_targets = ();
668 %known_programs = ();
670 %de_ansi_files = ();
672 $all_target = '';
674 %extension_seen = ();
676 %language_scratch = ();
678 %lang_specific_files = ();
680 $handle_dist_run = 0;
682 $need_link = 0;
684 $get_object_extension_was_run = 0;
686 %compile_clean_files = ();
688 # We always include `.'. This isn't strictly correct.
689 %libtool_clean_directories = ('.' => 1);
691 %transformed_files = ();
692 }
695 ################################################################
697 # Initialize our list of languages that are internally supported.
699 # C.
700 register_language ('name' => 'c',
701 'Name' => 'C',
702 'config_vars' => ['CC'],
703 'ansi' => 1,
704 'autodep' => '',
705 'flags' => ['CFLAGS', 'CPPFLAGS'],
706 'compiler' => 'COMPILE',
707 'compile' => '$(CC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS) $(CPPFLAGS) $(AM_CFLAGS) $(CFLAGS)',
708 'lder' => 'CCLD',
709 'ld' => '$(CC)',
710 'linker' => 'LINK',
711 'link' => '$(CCLD) $(AM_CFLAGS) $(CFLAGS) $(AM_LDFLAGS) $(LDFLAGS) -o $@',
712 'compile_flag' => '-c',
713 'libtool_tag' => 'CC',
714 'extensions' => ['.c'],
715 '_finish' => \&lang_c_finish);
717 # C++.
718 register_language ('name' => 'cxx',
719 'Name' => 'C++',
720 'config_vars' => ['CXX'],
721 'linker' => 'CXXLINK',
722 'link' => '$(CXXLD) $(AM_CXXFLAGS) $(CXXFLAGS) $(AM_LDFLAGS) $(LDFLAGS) -o $@',
723 'autodep' => 'CXX',
724 'flags' => ['CXXFLAGS', 'CPPFLAGS'],
725 'compile' => '$(CXX) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS) $(CPPFLAGS) $(AM_CXXFLAGS) $(CXXFLAGS)',
726 'compiler' => 'CXXCOMPILE',
727 'compile_flag' => '-c',
728 'output_flag' => '-o',
729 'libtool_tag' => 'CXX',
730 'lder' => 'CXXLD',
731 'ld' => '$(CXX)',
732 'pure' => 1,
733 'extensions' => ['.c++', '.cc', '.cpp', '.cxx', '.C']);
735 # Objective C.
736 register_language ('name' => 'objc',
737 'Name' => 'Objective C',
738 'config_vars' => ['OBJC'],
739 'linker' => 'OBJCLINK',
740 'link' => '$(OBJCLD) $(AM_OBJCFLAGS) $(OBJCFLAGS) $(AM_LDFLAGS) $(LDFLAGS) -o $@',
741 'autodep' => 'OBJC',
742 'flags' => ['OBJCFLAGS', 'CPPFLAGS'],
743 'compile' => '$(OBJC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS) $(CPPFLAGS) $(AM_OBJCFLAGS) $(OBJCFLAGS)',
744 'compiler' => 'OBJCCOMPILE',
745 'compile_flag' => '-c',
746 'output_flag' => '-o',
747 'lder' => 'OBJCLD',
748 'ld' => '$(OBJC)',
749 'pure' => 1,
750 'extensions' => ['.m']);
752 # Unified Parallel C.
753 register_language ('name' => 'upc',
754 'Name' => 'Unified Parallel C',
755 'config_vars' => ['UPC'],
756 'linker' => 'UPCLINK',
757 'link' => '$(UPCLD) $(AM_UPCFLAGS) $(UPCFLAGS) $(AM_LDFLAGS) $(LDFLAGS) -o $@',
758 'autodep' => 'UPC',
759 'flags' => ['UPCFLAGS', 'CPPFLAGS'],
760 'compile' => '$(UPC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS) $(CPPFLAGS) $(AM_UPCFLAGS) $(UPCFLAGS)',
761 'compiler' => 'UPCCOMPILE',
762 'compile_flag' => '-c',
763 'output_flag' => '-o',
764 'lder' => 'UPCLD',
765 'ld' => '$(UPC)',
766 'pure' => 1,
767 'extensions' => ['.upc']);
769 # Headers.
770 register_language ('name' => 'header',
771 'Name' => 'Header',
772 'extensions' => ['.h', '.H', '.hxx', '.h++', '.hh',
773 '.hpp', '.inc'],
774 # No output.
775 'output_extensions' => sub { return () },
776 # Nothing to do.
777 '_finish' => sub { });
779 # Yacc (C & C++).
780 register_language ('name' => 'yacc',
781 'Name' => 'Yacc',
782 'config_vars' => ['YACC'],
783 'flags' => ['YFLAGS'],
784 'compile' => '$(YACC) $(YFLAGS) $(AM_YFLAGS)',
785 'compiler' => 'YACCCOMPILE',
786 'extensions' => ['.y'],
787 'output_extensions' => sub { (my $ext = $_[0]) =~ tr/y/c/;
788 return ($ext,) },
789 'rule_file' => 'yacc',
790 '_finish' => \&lang_yacc_finish,
791 '_target_hook' => \&lang_yacc_target_hook,
792 'nodist_specific' => 1);
793 register_language ('name' => 'yaccxx',
794 'Name' => 'Yacc (C++)',
795 'config_vars' => ['YACC'],
796 'rule_file' => 'yacc',
797 'flags' => ['YFLAGS'],
798 'compiler' => 'YACCCOMPILE',
799 'compile' => '$(YACC) $(YFLAGS) $(AM_YFLAGS)',
800 'extensions' => ['.y++', '.yy', '.yxx', '.ypp'],
801 'output_extensions' => sub { (my $ext = $_[0]) =~ tr/y/c/;
802 return ($ext,) },
803 '_finish' => \&lang_yacc_finish,
804 '_target_hook' => \&lang_yacc_target_hook,
805 'nodist_specific' => 1);
807 # Lex (C & C++).
808 register_language ('name' => 'lex',
809 'Name' => 'Lex',
810 'config_vars' => ['LEX'],
811 'rule_file' => 'lex',
812 'flags' => ['LFLAGS'],
813 'compile' => '$(LEX) $(LFLAGS) $(AM_LFLAGS)',
814 'compiler' => 'LEXCOMPILE',
815 'extensions' => ['.l'],
816 'output_extensions' => sub { (my $ext = $_[0]) =~ tr/l/c/;
817 return ($ext,) },
818 '_finish' => \&lang_lex_finish,
819 '_target_hook' => \&lang_lex_target_hook,
820 'nodist_specific' => 1);
821 register_language ('name' => 'lexxx',
822 'Name' => 'Lex (C++)',
823 'config_vars' => ['LEX'],
824 'rule_file' => 'lex',
825 'flags' => ['LFLAGS'],
826 'compile' => '$(LEX) $(LFLAGS) $(AM_LFLAGS)',
827 'compiler' => 'LEXCOMPILE',
828 'extensions' => ['.l++', '.ll', '.lxx', '.lpp'],
829 'output_extensions' => sub { (my $ext = $_[0]) =~ tr/l/c/;
830 return ($ext,) },
831 '_finish' => \&lang_lex_finish,
832 '_target_hook' => \&lang_lex_target_hook,
833 'nodist_specific' => 1);
835 # Assembler.
836 register_language ('name' => 'asm',
837 'Name' => 'Assembler',
838 'config_vars' => ['CCAS', 'CCASFLAGS'],
840 'flags' => ['CCASFLAGS'],
841 # Users can set AM_CCASFLAGS to include DEFS, INCLUDES,
842 # or anything else required. They can also set CCAS.
843 # Or simply use Preprocessed Assembler.
844 'compile' => '$(CCAS) $(AM_CCASFLAGS) $(CCASFLAGS)',
845 'compiler' => 'CCASCOMPILE',
846 'compile_flag' => '-c',
847 'output_flag' => '-o',
848 'extensions' => ['.s'],
850 # With assembly we still use the C linker.
851 '_finish' => \&lang_c_finish);
853 # Preprocessed Assembler.
854 register_language ('name' => 'cppasm',
855 'Name' => 'Preprocessed Assembler',
856 'config_vars' => ['CCAS', 'CCASFLAGS'],
858 'autodep' => 'CCAS',
859 'flags' => ['CCASFLAGS', 'CPPFLAGS'],
860 'compile' => '$(CCAS) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS) $(CPPFLAGS) $(AM_CCASFLAGS) $(CCASFLAGS)',
861 'compiler' => 'CPPASCOMPILE',
862 'compile_flag' => '-c',
863 'output_flag' => '-o',
864 'extensions' => ['.S', '.sx'],
866 # With assembly we still use the C linker.
867 '_finish' => \&lang_c_finish);
869 # Fortran 77
870 register_language ('name' => 'f77',
871 'Name' => 'Fortran 77',
872 'config_vars' => ['F77'],
873 'linker' => 'F77LINK',
874 'link' => '$(F77LD) $(AM_FFLAGS) $(FFLAGS) $(AM_LDFLAGS) $(LDFLAGS) -o $@',
875 'flags' => ['FFLAGS'],
876 'compile' => '$(F77) $(AM_FFLAGS) $(FFLAGS)',
877 'compiler' => 'F77COMPILE',
878 'compile_flag' => '-c',
879 'output_flag' => '-o',
880 'libtool_tag' => 'F77',
881 'lder' => 'F77LD',
882 'ld' => '$(F77)',
883 'pure' => 1,
884 'extensions' => ['.f', '.for']);
886 # Fortran
887 register_language ('name' => 'fc',
888 'Name' => 'Fortran',
889 'config_vars' => ['FC'],
890 'linker' => 'FCLINK',
891 'link' => '$(FCLD) $(AM_FCFLAGS) $(FCFLAGS) $(AM_LDFLAGS) $(LDFLAGS) -o $@',
892 'flags' => ['FCFLAGS'],
893 'compile' => '$(FC) $(AM_FCFLAGS) $(FCFLAGS)',
894 'compiler' => 'FCCOMPILE',
895 'compile_flag' => '-c',
896 'output_flag' => '-o',
897 'lder' => 'FCLD',
898 'ld' => '$(FC)',
899 'pure' => 1,
900 'extensions' => ['.f90', '.f95', '.f03', '.f08']);
902 # Preprocessed Fortran
903 register_language ('name' => 'ppfc',
904 'Name' => 'Preprocessed Fortran',
905 'config_vars' => ['FC'],
906 'linker' => 'FCLINK',
907 'link' => '$(FCLD) $(AM_FCFLAGS) $(FCFLAGS) $(AM_LDFLAGS) $(LDFLAGS) -o $@',
908 'lder' => 'FCLD',
909 'ld' => '$(FC)',
910 'flags' => ['FCFLAGS', 'CPPFLAGS'],
911 'compiler' => 'PPFCCOMPILE',
912 'compile' => '$(FC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS) $(CPPFLAGS) $(AM_FCFLAGS) $(FCFLAGS)',
913 'compile_flag' => '-c',
914 'output_flag' => '-o',
915 'libtool_tag' => 'FC',
916 'pure' => 1,
917 'extensions' => ['.F90','.F95', '.F03', '.F08']);
919 # Preprocessed Fortran 77
920 #
921 # The current support for preprocessing Fortran 77 just involves
922 # passing `$(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS)
923 # $(CPPFLAGS)' as additional flags to the Fortran 77 compiler, since
924 # this is how GNU Make does it; see the `GNU Make Manual, Edition 0.51
925 # for `make' Version 3.76 Beta' (specifically, from info file
926 # `(make)Catalogue of Rules').
927 #
928 # A better approach would be to write an Autoconf test
929 # (i.e. AC_PROG_FPP) for a Fortran 77 preprocessor, because not all
930 # Fortran 77 compilers know how to do preprocessing. The Autoconf
931 # macro AC_PROG_FPP should test the Fortran 77 compiler first for
932 # preprocessing capabilities, and then fall back on cpp (if cpp were
933 # available).
934 register_language ('name' => 'ppf77',
935 'Name' => 'Preprocessed Fortran 77',
936 'config_vars' => ['F77'],
937 'linker' => 'F77LINK',
938 'link' => '$(F77LD) $(AM_FFLAGS) $(FFLAGS) $(AM_LDFLAGS) $(LDFLAGS) -o $@',
939 'lder' => 'F77LD',
940 'ld' => '$(F77)',
941 'flags' => ['FFLAGS', 'CPPFLAGS'],
942 'compiler' => 'PPF77COMPILE',
943 'compile' => '$(F77) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS) $(CPPFLAGS) $(AM_FFLAGS) $(FFLAGS)',
944 'compile_flag' => '-c',
945 'output_flag' => '-o',
946 'libtool_tag' => 'F77',
947 'pure' => 1,
948 'extensions' => ['.F']);
950 # Ratfor.
951 register_language ('name' => 'ratfor',
952 'Name' => 'Ratfor',
953 'config_vars' => ['F77'],
954 'linker' => 'F77LINK',
955 'link' => '$(F77LD) $(AM_FFLAGS) $(FFLAGS) $(AM_LDFLAGS) $(LDFLAGS) -o $@',
956 'lder' => 'F77LD',
957 'ld' => '$(F77)',
958 'flags' => ['RFLAGS', 'FFLAGS'],
959 # FIXME also FFLAGS.
960 'compile' => '$(F77) $(AM_FFLAGS) $(FFLAGS) $(AM_RFLAGS) $(RFLAGS)',
961 'compiler' => 'RCOMPILE',
962 'compile_flag' => '-c',
963 'output_flag' => '-o',
964 'libtool_tag' => 'F77',
965 'pure' => 1,
966 'extensions' => ['.r']);
968 # Java via gcj.
969 register_language ('name' => 'java',
970 'Name' => 'Java',
971 'config_vars' => ['GCJ'],
972 'linker' => 'GCJLINK',
973 'link' => '$(GCJLD) $(AM_GCJFLAGS) $(GCJFLAGS) $(AM_LDFLAGS) $(LDFLAGS) -o $@',
974 'autodep' => 'GCJ',
975 'flags' => ['GCJFLAGS'],
976 'compile' => '$(GCJ) $(AM_GCJFLAGS) $(GCJFLAGS)',
977 'compiler' => 'GCJCOMPILE',
978 'compile_flag' => '-c',
979 'output_flag' => '-o',
980 'libtool_tag' => 'GCJ',
981 'lder' => 'GCJLD',
982 'ld' => '$(GCJ)',
983 'pure' => 1,
984 'extensions' => ['.java', '.class', '.zip', '.jar']);
986 ################################################################
988 # Error reporting functions.
990 # err_am ($MESSAGE, [%OPTIONS])
991 # -----------------------------
992 # Uncategorized errors about the current Makefile.am.
993 sub err_am ($;%)
994 {
995 msg_am ('error', @_);
996 }
998 # err_ac ($MESSAGE, [%OPTIONS])
999 # -----------------------------
1000 # Uncategorized errors about configure.ac.
1001 sub err_ac ($;%)
1002 {
1003 msg_ac ('error', @_);
1004 }
1006 # msg_am ($CHANNEL, $MESSAGE, [%OPTIONS])
1007 # ---------------------------------------
1008 # Messages about about the current Makefile.am.
1009 sub msg_am ($$;%)
1010 {
1011 my ($channel, $msg, %opts) = @_;
1012 msg $channel, "${am_file}.am", $msg, %opts;
1013 }
1015 # msg_ac ($CHANNEL, $MESSAGE, [%OPTIONS])
1016 # ---------------------------------------
1017 # Messages about about configure.ac.
1018 sub msg_ac ($$;%)
1019 {
1020 my ($channel, $msg, %opts) = @_;
1021 msg $channel, $configure_ac, $msg, %opts;
1022 }
1024 ################################################################
1026 # subst ($TEXT)
1027 # -------------
1028 # Return a configure-style substitution using the indicated text.
1029 # We do this to avoid having the substitutions directly in automake.in;
1030 # when we do that they are sometimes removed and this causes confusion
1031 # and bugs.
1032 sub subst ($)
1033 {
1034 my ($text) = @_;
1035 return '@' . $text . '@';
1036 }
1038 ################################################################
1041 # $BACKPATH
1042 # &backname ($REL-DIR)
1043 # --------------------
1044 # If I `cd $REL-DIR', then to come back, I should `cd $BACKPATH'.
1045 # For instance `src/foo' => `../..'.
1046 # Works with non strictly increasing paths, i.e., `src/../lib' => `..'.
1047 sub backname ($)
1048 {
1049 my ($file) = @_;
1050 my @res;
1051 foreach (split (/\//, $file))
1052 {
1053 next if $_ eq '.' || $_ eq '';
1054 if ($_ eq '..')
1055 {
1056 pop @res;
1057 }
1058 else
1059 {
1060 push (@res, '..');
1061 }
1062 }
1063 return join ('/', @res) || '.';
1064 }
1066 ################################################################
1069 # Handle AUTOMAKE_OPTIONS variable. Return 1 on error, 0 otherwise.
1070 sub handle_options
1071 {
1072 my $var = var ('AUTOMAKE_OPTIONS');
1073 if ($var)
1074 {
1075 if ($var->has_conditional_contents)
1076 {
1077 msg_var ('unsupported', $var,
1078 "`AUTOMAKE_OPTIONS' cannot have conditional contents");
1079 }
1080 foreach my $locvals ($var->value_as_list_recursive (cond_filter => TRUE,
1081 location => 1))
1082 {
1083 my ($loc, $value) = @$locvals;
1084 return 1 if (process_option_list ($loc, $value))
1085 }
1086 }
1088 if ($strictness == GNITS)
1089 {
1090 set_option ('readme-alpha', INTERNAL);
1091 set_option ('std-options', INTERNAL);
1092 set_option ('check-news', INTERNAL);
1093 }
1095 return 0;
1096 }
1098 # shadow_unconditionally ($varname, $where)
1099 # -----------------------------------------
1100 # Return a $(variable) that contains all possible values
1101 # $varname can take.
1102 # If the VAR wasn't defined conditionally, return $(VAR).
1103 # Otherwise we create a am__VAR_DIST variable which contains
1104 # all possible values, and return $(am__VAR_DIST).
1105 sub shadow_unconditionally ($$)
1106 {
1107 my ($varname, $where) = @_;
1108 my $var = var $varname;
1109 if ($var->has_conditional_contents)
1110 {
1111 $varname = "am__${varname}_DIST";
1112 my @files = uniq ($var->value_as_list_recursive);
1113 define_pretty_variable ($varname, TRUE, $where, @files);
1114 }
1115 return "\$($varname)"
1116 }
1118 # get_object_extension ($EXTENSION)
1119 # ---------------------------------
1120 # Prefix $EXTENSION with $U if ansi2knr is in use.
1121 sub get_object_extension ($)
1122 {
1123 my ($extension) = @_;
1125 # Check for automatic de-ANSI-fication.
1126 $extension = '$U' . $extension
1127 if option 'ansi2knr';
1129 $get_object_extension_was_run = 1;
1131 return $extension;
1132 }
1134 # check_user_variables (@LIST)
1135 # ----------------------------
1136 # Make sure each variable VAR in @LIST does not exist, suggest using AM_VAR
1137 # otherwise.
1138 sub check_user_variables (@)
1139 {
1140 my @dont_override = @_;
1141 foreach my $flag (@dont_override)
1142 {
1143 my $var = var $flag;
1144 if ($var)
1145 {
1146 for my $cond ($var->conditions->conds)
1147 {
1148 if ($var->rdef ($cond)->owner == VAR_MAKEFILE)
1149 {
1150 msg_cond_var ('gnu', $cond, $flag,
1151 "`$flag' is a user variable, "
1152 . "you should not override it;\n"
1153 . "use `AM_$flag' instead.");
1154 }
1155 }
1156 }
1157 }
1158 }
1160 # Call finish function for each language that was used.
1161 sub handle_languages
1162 {
1163 if (! option 'no-dependencies')
1164 {
1165 # Include auto-dep code. Don't include it if DEP_FILES would
1166 # be empty.
1167 if (&saw_sources_p (0) && keys %dep_files)
1168 {
1169 # Set location of depcomp.
1170 &define_variable ('depcomp',
1171 "\$(SHELL) $am_config_aux_dir/depcomp",
1172 INTERNAL);
1173 &define_variable ('am__depfiles_maybe', 'depfiles', INTERNAL);
1175 require_conf_file ("$am_file.am", FOREIGN, 'depcomp');
1177 my @deplist = sort keys %dep_files;
1178 # Generate each `include' individually. Irix 6 make will
1179 # not properly include several files resulting from a
1180 # variable expansion; generating many separate includes
1181 # seems safest.
1182 $output_rules .= "\n";
1183 foreach my $iter (@deplist)
1184 {
1185 $output_rules .= (subst ('AMDEP_TRUE')
1186 . subst ('am__include')
1187 . ' '
1188 . subst ('am__quote')
1189 . $iter
1190 . subst ('am__quote')
1191 . "\n");
1192 }
1194 # Compute the set of directories to remove in distclean-depend.
1195 my @depdirs = uniq (map { dirname ($_) } @deplist);
1196 $output_rules .= &file_contents ('depend',
1197 new Automake::Location,
1198 DEPDIRS => "@depdirs");
1199 }
1200 }
1201 else
1202 {
1203 &define_variable ('depcomp', '', INTERNAL);
1204 &define_variable ('am__depfiles_maybe', '', INTERNAL);
1205 }
1207 my %done;
1209 # Is the c linker needed?
1210 my $needs_c = 0;
1211 foreach my $ext (sort keys %extension_seen)
1212 {
1213 next unless $extension_map{$ext};
1215 my $lang = $languages{$extension_map{$ext}};
1217 my $rule_file = $lang->rule_file || 'depend2';
1219 # Get information on $LANG.
1220 my $pfx = $lang->autodep;
1221 my $fpfx = ($pfx eq '') ? 'CC' : $pfx;
1223 my ($AMDEP, $FASTDEP) =
1224 (option 'no-dependencies' || $lang->autodep eq 'no')
1225 ? ('FALSE', 'FALSE') : ('AMDEP', "am__fastdep$fpfx");
1227 my %transform = ('EXT' => $ext,
1228 'PFX' => $pfx,
1229 'FPFX' => $fpfx,
1230 'AMDEP' => $AMDEP,
1231 'FASTDEP' => $FASTDEP,
1232 '-c' => $lang->compile_flag || '',
1233 # These are not used, but they need to be defined
1234 # so &transform do not complain.
1235 SUBDIROBJ => 0,
1236 'DERIVED-EXT' => 'BUG',
1237 DIST_SOURCE => 1,
1238 );
1240 # Generate the appropriate rules for this extension.
1241 if (((! option 'no-dependencies') && $lang->autodep ne 'no')
1242 || defined $lang->compile)
1243 {
1244 # Some C compilers don't support -c -o. Use it only if really
1245 # needed.
1246 my $output_flag = $lang->output_flag || '';
1247 $output_flag = '-o'
1248 if (! $output_flag
1249 && $lang->name eq 'c'
1250 && option 'subdir-objects');
1252 # Compute a possible derived extension.
1253 # This is not used by depend2.am.
1254 my $der_ext = (&{$lang->output_extensions} ($ext))[0];
1256 # When we output an inference rule like `.c.o:' we
1257 # have two cases to consider: either subdir-objects
1258 # is used, or it is not.
1259 #
1260 # In the latter case the rule is used to build objects
1261 # in the current directory, and dependencies always
1262 # go into `./$(DEPDIR)/'. We can hard-code this value.
1263 #
1264 # In the former case the rule can be used to build
1265 # objects in sub-directories too. Dependencies should
1266 # go into the appropriate sub-directories, e.g.,
1267 # `sub/$(DEPDIR)/'. The value of this directory
1268 # needs to be computed on-the-fly.
1269 #
1270 # DEPBASE holds the name of this directory, plus the
1271 # basename part of the object file (extensions Po, TPo,
1272 # Plo, TPlo will be added later as appropriate). It is
1273 # either hardcoded, or a shell variable (`$depbase') that
1274 # will be computed by the rule.
1275 my $depbase =
1276 option ('subdir-objects') ? '$$depbase' : '$(DEPDIR)/$*';
1277 $output_rules .=
1278 file_contents ($rule_file,
1279 new Automake::Location,
1280 %transform,
1281 GENERIC => 1,
1283 'DERIVED-EXT' => $der_ext,
1285 DEPBASE => $depbase,
1286 BASE => '$*',
1287 SOURCE => '$<',
1288 SOURCEFLAG => $sourceflags{$ext} || '',
1289 OBJ => '$@',
1290 OBJOBJ => '$@',
1291 LTOBJ => '$@',
1293 COMPILE => '$(' . $lang->compiler . ')',
1294 LTCOMPILE => '$(LT' . $lang->compiler . ')',
1295 -o => $output_flag,
1296 SUBDIROBJ => !! option 'subdir-objects');
1297 }
1299 # Now include code for each specially handled object with this
1300 # language.
1301 my %seen_files = ();
1302 foreach my $file (@{$lang_specific_files{$lang->name}})
1303 {
1304 my ($derived, $source, $obj, $myext, $srcext, %file_transform) = @$file;
1306 # We might see a given object twice, for instance if it is
1307 # used under different conditions.
1308 next if defined $seen_files{$obj};
1309 $seen_files{$obj} = 1;
1311 prog_error ("found " . $lang->name .
1312 " in handle_languages, but compiler not defined")
1313 unless defined $lang->compile;
1315 my $obj_compile = $lang->compile;
1317 # Rewrite each occurrence of `AM_$flag' in the compile
1318 # rule into `${derived}_$flag' if it exists.
1319 for my $flag (@{$lang->flags})
1320 {
1321 my $val = "${derived}_$flag";
1322 $obj_compile =~ s/\(AM_$flag\)/\($val\)/
1323 if set_seen ($val);
1324 }
1326 my $libtool_tag = '';
1327 if ($lang->libtool_tag && exists $libtool_tags{$lang->libtool_tag})
1328 {
1329 $libtool_tag = '--tag=' . $lang->libtool_tag . ' '
1330 }
1332 my $ptltflags = "${derived}_LIBTOOLFLAGS";
1333 $ptltflags = 'AM_LIBTOOLFLAGS' unless set_seen $ptltflags;
1335 my $obj_ltcompile =
1336 "\$(LIBTOOL) $libtool_tag\$($ptltflags) \$(LIBTOOLFLAGS) "
1337 . "--mode=compile $obj_compile";
1339 # We _need_ `-o' for per object rules.
1340 my $output_flag = $lang->output_flag || '-o';
1342 my $depbase = dirname ($obj);
1343 $depbase = ''
1344 if $depbase eq '.';
1345 $depbase .= '/'
1346 unless $depbase eq '';
1347 $depbase .= '$(DEPDIR)/' . basename ($obj);
1349 # Support for deansified files in subdirectories is ugly
1350 # enough to deserve an explanation.
1351 #
1352 # A Note about normal ansi2knr processing first. On
1353 #
1354 # AUTOMAKE_OPTIONS = ansi2knr
1355 # bin_PROGRAMS = foo
1356 # foo_SOURCES = foo.c
1357 #
1358 # we generate rules similar to:
1359 #
1360 # foo: foo$U.o; link ...
1361 # foo$U.o: foo$U.c; compile ...
1362 # foo_.c: foo.c; ansi2knr ...
1363 #
1364 # this is fairly compact, and will call ansi2knr depending
1365 # on the value of $U (`' or `_').
1366 #
1367 # It's harder with subdir sources. On
1368 #
1369 # AUTOMAKE_OPTIONS = ansi2knr
1370 # bin_PROGRAMS = foo
1371 # foo_SOURCES = sub/foo.c
1372 #
1373 # we have to create foo_.c in the current directory.
1374 # (Unless the user asks 'subdir-objects'.) This is important
1375 # in case the same file (`foo.c') is compiled from other
1376 # directories with different cpp options: foo_.c would
1377 # be preprocessed for only one set of options if it were
1378 # put in the subdirectory.
1379 #
1380 # Because foo$U.o must be built from either foo_.c or
1381 # sub/foo.c we can't be as concise as in the first example.
1382 # Instead we output
1383 #
1384 # foo: foo$U.o; link ...
1385 # foo_.o: foo_.c; compile ...
1386 # foo.o: sub/foo.c; compile ...
1387 # foo_.c: foo.c; ansi2knr ...
1388 #
1389 # This is why we'll now transform $rule_file twice
1390 # if we detect this case.
1391 # A first time we output the compile rule with `$U'
1392 # replaced by `_' and the source directory removed,
1393 # and another time we simply remove `$U'.
1394 #
1395 # Note that at this point $source (as computed by
1396 # &handle_single_transform) is `sub/foo$U.c'.
1397 # This can be confusing: it can be used as-is when
1398 # subdir-objects is set, otherwise you have to know
1399 # it really means `foo_.c' or `sub/foo.c'.
1400 my $objdir = dirname ($obj);
1401 my $srcdir = dirname ($source);
1402 if ($lang->ansi && $obj =~ /\$U/)
1403 {
1404 prog_error "`$obj' contains \$U, but `$source' doesn't."
1405 if $source !~ /\$U/;
1407 (my $source_ = $source) =~ s/\$U/_/g;
1408 # Output an additional rule if _.c and .c are not in
1409 # the same directory. (_.c is always in $objdir.)
1410 if ($objdir ne $srcdir)
1411 {
1412 (my $obj_ = $obj) =~ s/\$U/_/g;
1413 (my $depbase_ = $depbase) =~ s/\$U/_/g;
1414 $source_ = basename ($source_);
1416 $output_rules .=
1417 file_contents ($rule_file,
1418 new Automake::Location,
1419 %transform,
1420 GENERIC => 0,
1422 DEPBASE => $depbase_,
1423 BASE => $obj_,
1424 SOURCE => $source_,
1425 SOURCEFLAG => $sourceflags{$srcext} || '',
1426 OBJ => "$obj_$myext",
1427 OBJOBJ => "$obj_.obj",
1428 LTOBJ => "$obj_.lo",
1430 COMPILE => $obj_compile,
1431 LTCOMPILE => $obj_ltcompile,
1432 -o => $output_flag,
1433 %file_transform);
1434 $obj =~ s/\$U//g;
1435 $depbase =~ s/\$U//g;
1436 $source =~ s/\$U//g;
1437 }
1438 }
1440 $output_rules .=
1441 file_contents ($rule_file,
1442 new Automake::Location,
1443 %transform,
1444 GENERIC => 0,
1446 DEPBASE => $depbase,
1447 BASE => $obj,
1448 SOURCE => $source,
1449 SOURCEFLAG => $sourceflags{$srcext} || '',
1450 # Use $myext and not `.o' here, in case
1451 # we are actually building a new source
1452 # file -- e.g. via yacc.
1453 OBJ => "$obj$myext",
1454 OBJOBJ => "$obj.obj",
1455 LTOBJ => "$obj.lo",
1457 COMPILE => $obj_compile,
1458 LTCOMPILE => $obj_ltcompile,
1459 -o => $output_flag,
1460 %file_transform);
1461 }
1463 # The rest of the loop is done once per language.
1464 next if defined $done{$lang};
1465 $done{$lang} = 1;
1467 # Load the language dependent Makefile chunks.
1468 my %lang = map { uc ($_) => 0 } keys %languages;
1469 $lang{uc ($lang->name)} = 1;
1470 $output_rules .= file_contents ('lang-compile',
1471 new Automake::Location,
1472 %transform, %lang);
1474 # If the source to a program consists entirely of code from a
1475 # `pure' language, for instance C++ or Fortran 77, then we
1476 # don't need the C compiler code. However if we run into
1477 # something unusual then we do generate the C code. There are
1478 # probably corner cases here that do not work properly.
1479 # People linking Java code to Fortran code deserve pain.
1480 $needs_c ||= ! $lang->pure;
1482 define_compiler_variable ($lang)
1483 if ($lang->compile);
1485 define_linker_variable ($lang)
1486 if ($lang->link);
1488 require_variables ("$am_file.am", $lang->Name . " source seen",
1489 TRUE, @{$lang->config_vars});
1491 # Call the finisher.
1492 $lang->finish;
1494 # Flags listed in `->flags' are user variables (per GNU Standards),
1495 # they should not be overridden in the Makefile...
1496 my @dont_override = @{$lang->flags};
1497 # ... and so is LDFLAGS.
1498 push @dont_override, 'LDFLAGS' if $lang->link;
1500 check_user_variables @dont_override;
1501 }
1503 # If the project is entirely C++ or entirely Fortran 77 (i.e., 1
1504 # suffix rule was learned), don't bother with the C stuff. But if
1505 # anything else creeps in, then use it.
1506 $needs_c = 1
1507 if $need_link || suffix_rules_count > 1;
1509 if ($needs_c)
1510 {
1511 &define_compiler_variable ($languages{'c'})
1512 unless defined $done{$languages{'c'}};
1513 define_linker_variable ($languages{'c'});
1514 }
1515 }
1518 # append_exeext { PREDICATE } $MACRO
1519 # ----------------------------------
1520 # Append $(EXEEXT) to each filename in $F appearing in the Makefile
1521 # variable $MACRO if &PREDICATE($F) is true. @substitutions@ are
1522 # ignored.
1523 #
1524 # This is typically used on all filenames of *_PROGRAMS, and filenames
1525 # of TESTS that are programs.
1526 sub append_exeext (&$)
1527 {
1528 my ($pred, $macro) = @_;
1530 transform_variable_recursively
1531 ($macro, $macro, 'am__EXEEXT', 0, INTERNAL,
1532 sub {
1533 my ($subvar, $val, $cond, $full_cond) = @_;
1534 # Append $(EXEEXT) unless the user did it already, or it's a
1535 # @substitution@.
1536 $val .= '$(EXEEXT)'
1537 if $val !~ /(?:\$\(EXEEXT\)$|^[@]\w+[@]$)/ && &$pred ($val);
1538 return $val;
1539 });
1540 }
1543 # Check to make sure a source defined in LIBOBJS is not explicitly
1544 # mentioned. This is a separate function (as opposed to being inlined
1545 # in handle_source_transform) because it isn't always appropriate to
1546 # do this check.
1547 sub check_libobjs_sources
1548 {
1549 my ($one_file, $unxformed) = @_;
1551 foreach my $prefix ('', 'EXTRA_', 'dist_', 'nodist_',
1552 'dist_EXTRA_', 'nodist_EXTRA_')
1553 {
1554 my @files;
1555 my $varname = $prefix . $one_file . '_SOURCES';
1556 my $var = var ($varname);
1557 if ($var)
1558 {
1559 @files = $var->value_as_list_recursive;
1560 }
1561 elsif ($prefix eq '')
1562 {
1563 @files = ($unxformed . '.c');
1564 }
1565 else
1566 {
1567 next;
1568 }
1570 foreach my $file (@files)
1571 {
1572 err_var ($prefix . $one_file . '_SOURCES',
1573 "automatically discovered file `$file' should not" .
1574 " be explicitly mentioned")
1575 if defined $libsources{$file};
1576 }
1577 }
1578 }
1581 # @OBJECTS
1582 # handle_single_transform ($VAR, $TOPPARENT, $DERIVED, $OBJ, $FILE, %TRANSFORM)
1583 # -----------------------------------------------------------------------------
1584 # Does much of the actual work for handle_source_transform.
1585 # Arguments are:
1586 # $VAR is the name of the variable that the source filenames come from
1587 # $TOPPARENT is the name of the _SOURCES variable which is being processed
1588 # $DERIVED is the name of resulting executable or library
1589 # $OBJ is the object extension (e.g., `$U.lo')
1590 # $FILE the source file to transform
1591 # %TRANSFORM contains extras arguments to pass to file_contents
1592 # when producing explicit rules
1593 # Result is a list of the names of objects
1594 # %linkers_used will be updated with any linkers needed
1595 sub handle_single_transform ($$$$$%)
1596 {
1597 my ($var, $topparent, $derived, $obj, $_file, %transform) = @_;
1598 my @files = ($_file);
1599 my @result = ();
1600 my $nonansi_obj = $obj;
1601 $nonansi_obj =~ s/\$U//g;
1603 # Turn sources into objects. We use a while loop like this
1604 # because we might add to @files in the loop.
1605 while (scalar @files > 0)
1606 {
1607 $_ = shift @files;
1609 # Configure substitutions in _SOURCES variables are errors.
1610 if (/^\@.*\@$/)
1611 {
1612 my $parent_msg = '';
1613 $parent_msg = "\nand is referred to from `$topparent'"
1614 if $topparent ne $var->name;
1615 err_var ($var,
1616 "`" . $var->name . "' includes configure substitution `$_'"
1617 . $parent_msg . ";\nconfigure " .
1618 "substitutions are not allowed in _SOURCES variables");
1619 next;
1620 }
1622 # If the source file is in a subdirectory then the `.o' is put
1623 # into the current directory, unless the subdir-objects option
1624 # is in effect.
1626 # Split file name into base and extension.
1627 next if ! /^(?:(.*)\/)?([^\/]*)($KNOWN_EXTENSIONS_PATTERN)$/;
1628 my $full = $_;
1629 my $directory = $1 || '';
1630 my $base = $2;
1631 my $extension = $3;
1633 # We must generate a rule for the object if it requires its own flags.
1634 my $renamed = 0;
1635 my ($linker, $object);
1637 # This records whether we've seen a derived source file (e.g.
1638 # yacc output).
1639 my $derived_source = 0;
1641 # This holds the `aggregate context' of the file we are
1642 # currently examining. If the file is compiled with
1643 # per-object flags, then it will be the name of the object.
1644 # Otherwise it will be `AM'. This is used by the target hook
1645 # language function.
1646 my $aggregate = 'AM';
1648 $extension = &derive_suffix ($extension, $nonansi_obj);
1649 my $lang;
1650 if ($extension_map{$extension} &&
1651 ($lang = $languages{$extension_map{$extension}}))
1652 {
1653 # Found the language, so see what it says.
1654 &saw_extension ($extension);
1656 # Do we have per-executable flags for this executable?
1657 my $have_per_exec_flags = 0;
1658 my @peflags = @{$lang->flags};
1659 push @peflags, 'LIBTOOLFLAGS' if $nonansi_obj eq '.lo';
1660 foreach my $flag (@peflags)
1661 {
1662 if (set_seen ("${derived}_$flag"))
1663 {
1664 $have_per_exec_flags = 1;
1665 last;
1666 }
1667 }
1669 # Note: computed subr call. The language rewrite function
1670 # should return one of the LANG_* constants. It could
1671 # also return a list whose first value is such a constant
1672 # and whose second value is a new source extension which
1673 # should be applied. This means this particular language
1674 # generates another source file which we must then process
1675 # further.
1676 my $subr = \&{'lang_' . $lang->name . '_rewrite'};
1677 my ($r, $source_extension)
1678 = &$subr ($directory, $base, $extension,
1679 $nonansi_obj, $have_per_exec_flags, $var);
1680 # Skip this entry if we were asked not to process it.
1681 next if $r == LANG_IGNORE;
1683 # Now extract linker and other info.
1684 $linker = $lang->linker;
1686 my $this_obj_ext;
1687 if (defined $source_extension)
1688 {
1689 $this_obj_ext = $source_extension;
1690 $derived_source = 1;
1691 }
1692 elsif ($lang->ansi)
1693 {
1694 $this_obj_ext = $obj;
1695 }
1696 else
1697 {
1698 $this_obj_ext = $nonansi_obj;
1699 }
1700 $object = $base . $this_obj_ext;
1702 if ($have_per_exec_flags)
1703 {
1704 # We have a per-executable flag in effect for this
1705 # object. In this case we rewrite the object's
1706 # name to ensure it is unique.
1708 # We choose the name `DERIVED_OBJECT' to ensure
1709 # (1) uniqueness, and (2) continuity between
1710 # invocations. However, this will result in a
1711 # name that is too long for losing systems, in
1712 # some situations. So we provide _SHORTNAME to
1713 # override.
1715 my $dname = $derived;
1716 my $var = var ($derived . '_SHORTNAME');
1717 if ($var)
1718 {
1719 # FIXME: should use the same Condition as
1720 # the _SOURCES variable. But this is really
1721 # silly overkill -- nobody should have
1722 # conditional shortnames.
1723 $dname = $var->variable_value;
1724 }
1725 $object = $dname . '-' . $object;
1727 prog_error ($lang->name . " flags defined without compiler")
1728 if ! defined $lang->compile;
1730 $renamed = 1;
1731 }
1733 # If rewrite said it was ok, put the object into a
1734 # subdir.
1735 if ($r == LANG_SUBDIR && $directory ne '')
1736 {
1737 $object = $directory . '/' . $object;
1738 }
1740 # If the object file has been renamed (because per-target
1741 # flags are used) we cannot compile the file with an
1742 # inference rule: we need an explicit rule.
1743 #
1744 # If the source is in a subdirectory and the object is in
1745 # the current directory, we also need an explicit rule.
1746 #
1747 # If both source and object files are in a subdirectory
1748 # (this happens when the subdir-objects option is used),
1749 # then the inference will work.
1750 #
1751 # The latter case deserves a historical note. When the
1752 # subdir-objects option was added on 1999-04-11 it was
1753 # thought that inferences rules would work for
1754 # subdirectory objects too. Later, on 1999-11-22,
1755 # automake was changed to output explicit rules even for
1756 # subdir-objects. Nobody remembers why, but this occurred
1757 # soon after the merge of the user-dep-gen-branch so it
1758 # might be related. In late 2003 people complained about
1759 # the size of the generated Makefile.ins (libgcj, with
1760 # 2200+ subdir objects was reported to have a 9MB
1761 # Makefile), so we now rely on inference rules again.
1762 # Maybe we'll run across the same issue as in the past,
1763 # but at least this time we can document it. However since
1764 # dependency tracking has evolved it is possible that
1765 # our old problem no longer exists.
1766 # Using inference rules for subdir-objects has been tested
1767 # with GNU make, Solaris make, Ultrix make, BSD make,
1768 # HP-UX make, and OSF1 make successfully.
1769 if ($renamed
1770 || ($directory ne '' && ! option 'subdir-objects')
1771 # We must also use specific rules for a nodist_ source
1772 # if its language requests it.
1773 || ($lang->nodist_specific && ! $transform{'DIST_SOURCE'}))
1774 {
1775 my $obj_sans_ext = substr ($object, 0,
1776 - length ($this_obj_ext));
1777 my $full_ansi = $full;
1778 if ($lang->ansi && option 'ansi2knr')
1779 {
1780 $full_ansi =~ s/$KNOWN_EXTENSIONS_PATTERN$/\$U$&/;
1781 $obj_sans_ext .= '$U';
1782 }
1784 my @specifics = ($full_ansi, $obj_sans_ext,
1785 # Only use $this_obj_ext in the derived
1786 # source case because in the other case we
1787 # *don't* want $(OBJEXT) to appear here.
1788 ($derived_source ? $this_obj_ext : '.o'),
1789 $extension);
1791 # If we renamed the object then we want to use the
1792 # per-executable flag name. But if this is simply a
1793 # subdir build then we still want to use the AM_ flag
1794 # name.
1795 if ($renamed)
1796 {
1797 unshift @specifics, $derived;
1798 $aggregate = $derived;
1799 }
1800 else
1801 {
1802 unshift @specifics, 'AM';
1803 }
1805 # Each item on this list is a reference to a list consisting
1806 # of four values followed by additional transform flags for
1807 # file_contents. The four values are the derived flag prefix
1808 # (e.g. for `foo_CFLAGS', it is `foo'), the name of the
1809 # source file, the base name of the output file, and
1810 # the extension for the object file.
1811 push (@{$lang_specific_files{$lang->name}},
1812 [@specifics, %transform]);
1813 }
1814 }
1815 elsif ($extension eq $nonansi_obj)
1816 {
1817 # This is probably the result of a direct suffix rule.
1818 # In this case we just accept the rewrite.
1819 $object = "$base$extension";
1820 $object = "$directory/$object" if $directory ne '';
1821 $linker = '';
1822 }
1823 else
1824 {
1825 # No error message here. Used to have one, but it was
1826 # very unpopular.
1827 # FIXME: we could potentially do more processing here,
1828 # perhaps treating the new extension as though it were a
1829 # new source extension (as above). This would require
1830 # more restructuring than is appropriate right now.
1831 next;
1832 }
1834 err_am "object `$object' created by `$full' and `$object_map{$object}'"
1835 if (defined $object_map{$object}
1836 && $object_map{$object} ne $full);
1838 my $comp_val = (($object =~ /\.lo$/)
1839 ? COMPILE_LIBTOOL : COMPILE_ORDINARY);
1840 (my $comp_obj = $object) =~ s/\.lo$/.\$(OBJEXT)/;
1841 if (defined $object_compilation_map{$comp_obj}
1842 && $object_compilation_map{$comp_obj} != 0
1843 # Only see the error once.
1844 && ($object_compilation_map{$comp_obj}
1845 != (COMPILE_LIBTOOL | COMPILE_ORDINARY))
1846 && $object_compilation_map{$comp_obj} != $comp_val)
1847 {
1848 err_am "object `$comp_obj' created both with libtool and without";
1849 }
1850 $object_compilation_map{$comp_obj} |= $comp_val;
1852 if (defined $lang)
1853 {
1854 # Let the language do some special magic if required.
1855 $lang->target_hook ($aggregate, $object, $full, %transform);
1856 }
1858 if ($derived_source)
1859 {
1860 prog_error ($lang->name . " has automatic dependency tracking")
1861 if $lang->autodep ne 'no';
1862 # Make sure this new source file is handled next. That will
1863 # make it appear to be at the right place in the list.
1864 unshift (@files, $object);
1865 # Distribute derived sources unless the source they are
1866 # derived from is not.
1867 &push_dist_common ($object)
1868 unless ($topparent =~ /^(?:nobase_)?nodist_/);
1869 next;
1870 }
1872 $linkers_used{$linker} = 1;
1874 push (@result, $object);
1876 if (! defined $object_map{$object})
1877 {
1878 my @dep_list = ();
1879 $object_map{$object} = $full;
1881 # If resulting object is in subdir, we need to make
1882 # sure the subdir exists at build time.
1883 if ($object =~ /\//)
1884 {
1885 # FIXME: check that $DIRECTORY is somewhere in the
1886 # project
1888 # For Java, the way we're handling it right now, a
1889 # `..' component doesn't make sense.
1890 if ($lang && $lang->name eq 'java' && $object =~ /(\/|^)\.\.\//)
1891 {
1892 err_am "`$full' should not contain a `..' component";
1893 }
1895 # Make sure object is removed by `make mostlyclean'.
1896 $compile_clean_files{$object} = MOSTLY_CLEAN;
1897 # If we have a libtool object then we also must remove
1898 # the ordinary .o.
1899 if ($object =~ /\.lo$/)
1900 {
1901 (my $xobj = $object) =~ s,lo$,\$(OBJEXT),;
1902 $compile_clean_files{$xobj} = MOSTLY_CLEAN;
1904 # Remove any libtool object in this directory.
1905 $libtool_clean_directories{$directory} = 1;
1906 }
1908 push (@dep_list, require_build_directory ($directory));
1910 # If we're generating dependencies, we also want
1911 # to make sure that the appropriate subdir of the
1912 # .deps directory is created.
1913 push (@dep_list,
1914 require_build_directory ($directory . '/$(DEPDIR)'))
1915 unless option 'no-dependencies';
1916 }
1918 &pretty_print_rule ($object . ':', "\t", @dep_list)
1919 if scalar @dep_list > 0;
1920 }
1922 # Transform .o or $o file into .P file (for automatic
1923 # dependency code).
1924 if ($lang && $lang->autodep ne 'no')
1925 {
1926 my $depfile = $object;
1927 $depfile =~ s/\.([^.]*)$/.P$1/;
1928 $depfile =~ s/\$\(OBJEXT\)$/o/;
1929 $dep_files{dirname ($depfile) . '/$(DEPDIR)/'
1930 . basename ($depfile)} = 1;
1931 }
1932 }
1934 return @result;
1935 }
1938 # $LINKER
1939 # define_objects_from_sources ($VAR, $OBJVAR, $NODEFINE, $ONE_FILE,
1940 # $OBJ, $PARENT, $TOPPARENT, $WHERE, %TRANSFORM)
1941 # ---------------------------------------------------------------------------
1942 # Define an _OBJECTS variable for a _SOURCES variable (or subvariable)
1943 #
1944 # Arguments are:
1945 # $VAR is the name of the _SOURCES variable
1946 # $OBJVAR is the name of the _OBJECTS variable if known (otherwise
1947 # it will be generated and returned).
1948 # $NODEFINE is a boolean: if true, $OBJVAR will not be defined (but
1949 # work done to determine the linker will be).
1950 # $ONE_FILE is the canonical (transformed) name of object to build
1951 # $OBJ is the object extension (i.e. either `.o' or `.lo').
1952 # $TOPPARENT is the _SOURCES variable being processed.
1953 # $WHERE context into which this definition is done
1954 # %TRANSFORM extra arguments to pass to file_contents when producing
1955 # rules
1956 #
1957 # Result is a pair ($LINKER, $OBJVAR):
1958 # $LINKER is a boolean, true if a linker is needed to deal with the objects
1959 sub define_objects_from_sources ($$$$$$$%)
1960 {
1961 my ($var, $objvar, $nodefine, $one_file,
1962 $obj, $topparent, $where, %transform) = @_;
1964 my $needlinker = "";
1966 transform_variable_recursively
1967 ($var, $objvar, 'am__objects', $nodefine, $where,
1968 # The transform code to run on each filename.
1969 sub {
1970 my ($subvar, $val, $cond, $full_cond) = @_;
1971 my @trans = handle_single_transform ($subvar, $topparent,
1972 $one_file, $obj, $val,
1973 %transform);
1974 $needlinker = "true" if @trans;
1975 return @trans;
1976 });
1978 return $needlinker;
1979 }
1982 # handle_source_transform ($CANON_TARGET, $TARGET, $OBJEXT, $WHERE, %TRANSFORM)
1983 # -----------------------------------------------------------------------------
1984 # Handle SOURCE->OBJECT transform for one program or library.
1985 # Arguments are:
1986 # canonical (transformed) name of target to build
1987 # actual target of object to build
1988 # object extension (i.e., either `.o' or `$o')
1989 # location of the source variable
1990 # extra arguments to pass to file_contents when producing rules
1991 # Return the name of the linker variable that must be used.
1992 # Empty return means just use `LINK'.
1993 sub handle_source_transform ($$$$%)
1994 {
1995 # one_file is canonical name. unxformed is given name. obj is
1996 # object extension.
1997 my ($one_file, $unxformed, $obj, $where, %transform) = @_;
1999 my $linker = '';
2001 # No point in continuing if _OBJECTS is defined.
2002 return if reject_var ($one_file . '_OBJECTS',
2003 $one_file . '_OBJECTS should not be defined');
2005 my %used_pfx = ();
2006 my $needlinker;
2007 %linkers_used = ();
2008 foreach my $prefix ('', 'EXTRA_', 'dist_', 'nodist_',
2009 'dist_EXTRA_', 'nodist_EXTRA_')
2010 {
2011 my $varname = $prefix . $one_file . "_SOURCES";
2012 my $var = var $varname;
2013 next unless $var;
2015 # We are going to define _OBJECTS variables using the prefix.
2016 # Then we glom them all together. So we can't use the null
2017 # prefix here as we need it later.
2018 my $xpfx = ($prefix eq '') ? 'am_' : $prefix;
2020 # Keep track of which prefixes we saw.
2021 $used_pfx{$xpfx} = 1
2022 unless $prefix =~ /EXTRA_/;
2024 push @sources, "\$($varname)";
2025 push @dist_sources, shadow_unconditionally ($varname, $where)
2026 unless (option ('no-dist') || $prefix =~ /^nodist_/);
2028 $needlinker |=
2029 define_objects_from_sources ($varname,
2030 $xpfx . $one_file . '_OBJECTS',
2031 $prefix =~ /EXTRA_/,
2032 $one_file, $obj, $varname, $where,
2033 DIST_SOURCE => ($prefix !~ /^nodist_/),
2034 %transform);
2035 }
2036 if ($needlinker)
2037 {
2038 $linker ||= &resolve_linker (%linkers_used);
2039 }
2041 my @keys = sort keys %used_pfx;
2042 if (scalar @keys == 0)
2043 {
2044 # The default source for libfoo.la is libfoo.c, but for
2045 # backward compatibility we first look at libfoo_la.c
2046 my $old_default_source = "$one_file.c";
2047 (my $default_source = $unxformed) =~ s,(\.[^./\\]*)?$,.c,;
2048 if ($old_default_source ne $default_source
2049 && (rule $old_default_source
2050 || rule '$(srcdir)/' . $old_default_source
2051 || rule '${srcdir}/' . $old_default_source
2052 || -f $old_default_source))
2053 {
2054 my $loc = $where->clone;
2055 $loc->pop_context;
2056 msg ('obsolete', $loc,
2057 "the default source for `$unxformed' has been changed "
2058 . "to `$default_source'.\n(Using `$old_default_source' for "
2059 . "backward compatibility.)");
2060 $default_source = $old_default_source;
2061 }
2062 # If a rule exists to build this source with a $(srcdir)
2063 # prefix, use that prefix in our variables too. This is for
2064 # the sake of BSD Make.
2065 if (rule '$(srcdir)/' . $default_source
2066 || rule '${srcdir}/' . $default_source)
2067 {
2068 $default_source = '$(srcdir)/' . $default_source;
2069 }
2071 &define_variable ($one_file . "_SOURCES", $default_source, $where);
2072 push (@sources, $default_source);
2073 push (@dist_sources, $default_source);
2075 %linkers_used = ();
2076 my (@result) =
2077 handle_single_transform ($one_file . '_SOURCES',
2078 $one_file . '_SOURCES',
2079 $one_file, $obj,
2080 $default_source, %transform);
2081 $linker ||= &resolve_linker (%linkers_used);
2082 define_pretty_variable ($one_file . '_OBJECTS', TRUE, $where, @result);
2083 }
2084 else
2085 {
2086 @keys = map { '$(' . $_ . $one_file . '_OBJECTS)' } @keys;
2087 define_pretty_variable ($one_file . '_OBJECTS', TRUE, $where, @keys);
2088 }
2090 # If we want to use `LINK' we must make sure it is defined.
2091 if ($linker eq '')
2092 {
2093 $need_link = 1;
2094 }
2096 return $linker;
2097 }
2100 # handle_lib_objects ($XNAME, $VAR)
2101 # ---------------------------------
2102 # Special-case ALLOCA and LIBOBJS substitutions in _LDADD or _LIBADD variables.
2103 # Also, generate _DEPENDENCIES variable if appropriate.
2104 # Arguments are:
2105 # transformed name of object being built, or empty string if no object
2106 # name of _LDADD/_LIBADD-type variable to examine
2107 # Returns 1 if LIBOBJS seen, 0 otherwise.
2108 sub handle_lib_objects
2109 {
2110 my ($xname, $varname) = @_;
2112 my $var = var ($varname);
2113 prog_error "handle_lib_objects: `$varname' undefined"
2114 unless $var;
2115 prog_error "handle_lib_objects: unexpected variable name `$varname'"
2116 unless $varname =~ /^(.*)(?:LIB|LD)ADD$/;
2117 my $prefix = $1 || 'AM_';
2119 my $seen_libobjs = 0;
2120 my $flagvar = 0;
2122 transform_variable_recursively
2123 ($varname, $xname . '_DEPENDENCIES', 'am__DEPENDENCIES',
2124 ! $xname, INTERNAL,
2125 # Transformation function, run on each filename.
2126 sub {
2127 my ($subvar, $val, $cond, $full_cond) = @_;
2129 if ($val =~ /^-/)
2130 {
2131 # Skip -lfoo and -Ldir silently; these are explicitly allowed.
2132 if ($val !~ /^-[lL]/ &&
2133 # Skip -dlopen and -dlpreopen; these are explicitly allowed
2134 # for Libtool libraries or programs. (Actually we are a bit
2135 # laxe here since this code also applies to non-libtool
2136 # libraries or programs, for which -dlopen and -dlopreopen
2137 # are pure nonsense. Diagnosing this doesn't seem very
2138 # important: the developer will quickly get complaints from
2139 # the linker.)
2140 $val !~ /^-dl(?:pre)?open$/ &&
2141 # Only get this error once.
2142 ! $flagvar)
2143 {
2144 $flagvar = 1;
2145 # FIXME: should display a stack of nested variables
2146 # as context when $var != $subvar.
2147 err_var ($var, "linker flags such as `$val' belong in "
2148 . "`${prefix}LDFLAGS");
2149 }
2150 return ();
2151 }
2152 elsif ($val !~ /^\@.*\@$/)
2153 {
2154 # Assume we have a file of some sort, and output it into the
2155 # dependency variable. Autoconf substitutions are not output;
2156 # rarely is a new dependency substituted into e.g. foo_LDADD
2157 # -- but bad things (e.g. -lX11) are routinely substituted.
2158 # Note that LIBOBJS and ALLOCA are exceptions to this rule,
2159 # and handled specially below.
2160 return $val;
2161 }
2162 elsif ($val =~ /^\@(LT)?LIBOBJS\@$/)
2163 {
2164 handle_LIBOBJS ($subvar, $cond, $1);
2165 $seen_libobjs = 1;
2166 return $val;
2167 }
2168 elsif ($val =~ /^\@(LT)?ALLOCA\@$/)
2169 {
2170 handle_ALLOCA ($subvar, $cond, $1);
2171 return $val;
2172 }
2173 else
2174 {
2175 return ();
2176 }
2177 });
2179 return $seen_libobjs;
2180 }
2182 # handle_LIBOBJS_or_ALLOCA ($VAR)
2183 # -------------------------------
2184 # Definitions common to LIBOBJS and ALLOCA.
2185 # VAR should be one of LIBOBJS, LTLIBOBJS, ALLOCA, or LTALLOCA.
2186 sub handle_LIBOBJS_or_ALLOCA ($)
2187 {
2188 my ($var) = @_;
2190 my $dir = '';
2192 # If LIBOBJS files must be built in another directory we have
2193 # to define LIBOBJDIR and ensure the files get cleaned.
2194 # Otherwise LIBOBJDIR can be left undefined, and the cleaning
2195 # is achieved by `rm -f *.$(OBJEXT)' in compile.am.
2196 if ($config_libobj_dir
2197 && $relative_dir ne $config_libobj_dir)
2198 {
2199 if (option 'subdir-objects')
2200 {
2201 # In the top-level Makefile we do not use $(top_builddir), because
2202 # we are already there, and since the targets are built without
2203 # a $(top_builddir), it helps BSD Make to match them with
2204 # dependencies.
2205 $dir = "$config_libobj_dir/" if $config_libobj_dir ne '.';
2206 $dir = "$topsrcdir/$dir" if $relative_dir ne '.';
2207 define_variable ('LIBOBJDIR', "$dir", INTERNAL);
2208 $clean_files{"\$($var)"} = MOSTLY_CLEAN;
2209 # If LTLIBOBJS is used, we must also clear LIBOBJS (which might
2210 # be created by libtool as a side-effect of creating LTLIBOBJS).
2211 $clean_files{"\$($var)"} = MOSTLY_CLEAN if $var =~ s/^LT//;
2212 }
2213 else
2214 {
2215 error ("`\$($var)' cannot be used outside `$config_libobj_dir' if"
2216 . " `subdir-objects' is not set");
2217 }
2218 }
2220 return $dir;
2221 }
2223 sub handle_LIBOBJS ($$$)
2224 {
2225 my ($var, $cond, $lt) = @_;
2226 my $myobjext = $lt ? 'lo' : 'o';
2227 $lt ||= '';
2229 $var->requires_variables ("\@${lt}LIBOBJS\@ used", $lt . 'LIBOBJS')
2230 if ! keys %libsources;
2232 my $dir = handle_LIBOBJS_or_ALLOCA "${lt}LIBOBJS";
2234 foreach my $iter (keys %libsources)
2235 {
2236 if ($iter =~ /\.[cly]$/)
2237 {
2238 &saw_extension ($&);
2239 &saw_extension ('.c');
2240 }
2242 if ($iter =~ /\.h$/)
2243 {
2244 require_libsource_with_macro ($cond, $var, FOREIGN, $iter);
2245 }
2246 elsif ($iter ne 'alloca.c')
2247 {
2248 my $rewrite = $iter;
2249 $rewrite =~ s/\.c$/.P$myobjext/;
2250 $dep_files{$dir . '$(DEPDIR)/' . $rewrite} = 1;
2251 $rewrite = "^" . quotemeta ($iter) . "\$";
2252 # Only require the file if it is not a built source.
2253 my $bs = var ('BUILT_SOURCES');
2254 if (! $bs || ! grep (/$rewrite/, $bs->value_as_list_recursive))
2255 {
2256 require_libsource_with_macro ($cond, $var, FOREIGN, $iter);
2257 }
2258 }
2259 }
2260 }
2262 sub handle_ALLOCA ($$$)
2263 {
2264 my ($var, $cond, $lt) = @_;
2265 my $myobjext = $lt ? 'lo' : 'o';
2266 $lt ||= '';
2267 my $dir = handle_LIBOBJS_or_ALLOCA "${lt}ALLOCA";
2269 $var->requires_variables ("\@${lt}ALLOCA\@ used", $lt . 'ALLOCA');
2270 $dep_files{$dir . '$(DEPDIR)/alloca.P' . $myobjext} = 1;
2271 require_libsource_with_macro ($cond, $var, FOREIGN, 'alloca.c');
2272 &saw_extension ('.c');
2273 }
2275 # Canonicalize the input parameter
2276 sub canonicalize
2277 {
2278 my ($string) = @_;
2279 $string =~ tr/A-Za-z0-9_\@/_/c;
2280 return $string;
2281 }
2283 # Canonicalize a name, and check to make sure the non-canonical name
2284 # is never used. Returns canonical name. Arguments are name and a
2285 # list of suffixes to check for.
2286 sub check_canonical_spelling
2287 {
2288 my ($name, @suffixes) = @_;
2290 my $xname = &canonicalize ($name);
2291 if ($xname ne $name)
2292 {
2293 foreach my $xt (@suffixes)
2294 {
2295 reject_var ("$name$xt", "use `$xname$xt', not `$name$xt'");
2296 }
2297 }
2299 return $xname;
2300 }
2303 # handle_compile ()
2304 # -----------------
2305 # Set up the compile suite.
2306 sub handle_compile ()
2307 {
2308 return
2309 unless $get_object_extension_was_run;
2311 # Boilerplate.
2312 my $default_includes = '';
2313 if (! option 'nostdinc')
2314 {
2315 my @incs = ('-I.', subst ('am__isrc'));
2317 my $var = var 'CONFIG_HEADER';
2318 if ($var)
2319 {
2320 foreach my $hdr (split (' ', $var->variable_value))
2321 {
2322 push @incs, '-I' . dirname ($hdr);
2323 }
2324 }
2325 # We want `-I. -I$(srcdir)', but the latter -I is redundant
2326 # and unaesthetic in non-VPATH builds. We use `-I.@am__isrc@`
2327 # instead. It will be replaced by '-I.' or '-I. -I$(srcdir)'.
2328 # Items in CONFIG_HEADER are never in $(srcdir) so it is safe
2329 # to just put @am__isrc@ right after `-I.', without a space.
2330 ($default_includes = ' ' . uniq (@incs)) =~ s/ @/@/;
2331 }
2333 my (@mostly_rms, @dist_rms);
2334 foreach my $item (sort keys %compile_clean_files)
2335 {
2336 if ($compile_clean_files{$item} == MOSTLY_CLEAN)
2337 {
2338 push (@mostly_rms, "\t-rm -f $item");
2339 }
2340 elsif ($compile_clean_files{$item} == DIST_CLEAN)
2341 {
2342 push (@dist_rms, "\t-rm -f $item");
2343 }
2344 else
2345 {
2346 prog_error 'invalid entry in %compile_clean_files';
2347 }
2348 }
2350 my ($coms, $vars, $rules) =
2351 &file_contents_internal (1, "$libdir/am/compile.am",
2352 new Automake::Location,
2353 ('DEFAULT_INCLUDES' => $default_includes,
2354 'MOSTLYRMS' => join ("\n", @mostly_rms),
2355 'DISTRMS' => join ("\n", @dist_rms)));
2356 $output_vars .= $vars;
2357 $output_rules .= "$coms$rules";
2359 # Check for automatic de-ANSI-fication.
2360 if (option 'ansi2knr')
2361 {
2362 my ($ansi2knr_filename, $ansi2knr_where) = @{option 'ansi2knr'};
2363 my $ansi2knr_dir = '';
2365 require_variables ($ansi2knr_where, "option `ansi2knr' is used",
2366 TRUE, "ANSI2KNR", "U");
2368 # topdir is where ansi2knr should be.
2369 if ($ansi2knr_filename eq 'ansi2knr')
2370 {
2371 # Only require ansi2knr files if they should appear in
2372 # this directory.
2373 require_file ($ansi2knr_where, FOREIGN,
2374 'ansi2knr.c', 'ansi2knr.1');
2376 # ansi2knr needs to be built before subdirs, so unshift it.
2377 unshift (@all, '$(ANSI2KNR)');
2378 }
2379 else
2380 {
2381 $ansi2knr_dir = dirname ($ansi2knr_filename);
2382 }
2384 $output_rules .= &file_contents ('ansi2knr',
2385 new Automake::Location,
2386 'ANSI2KNR-DIR' => $ansi2knr_dir);
2388 }
2389 }
2391 # handle_libtool ()
2392 # -----------------
2393 # Handle libtool rules.
2394 sub handle_libtool
2395 {
2396 return unless var ('LIBTOOL');
2398 # Libtool requires some files, but only at top level.
2399 # (Starting with Libtool 2.0 we do not have to bother. These
2400 # requirements are done with AC_REQUIRE_AUX_FILE.)
2401 require_conf_file_with_macro (TRUE, 'LIBTOOL', FOREIGN, @libtool_files)
2402 if $relative_dir eq '.' && ! $libtool_new_api;
2404 my @libtool_rms;
2405 foreach my $item (sort keys %libtool_clean_directories)
2406 {
2407 my $dir = ($item eq '.') ? '' : "$item/";
2408 # .libs is for Unix, _libs for DOS.
2409 push (@libtool_rms, "\t-rm -rf ${dir}.libs ${dir}_libs");
2410 }
2412 check_user_variables 'LIBTOOLFLAGS';
2414 # Output the libtool compilation rules.
2415 $output_rules .= &file_contents ('libtool',
2416 new Automake::Location,
2417 LTRMS => join ("\n", @libtool_rms));
2418 }
2420 # handle_programs ()
2421 # ------------------
2422 # Handle C programs.
2423 sub handle_programs
2424 {
2425 my @proglist = &am_install_var ('progs', 'PROGRAMS',
2426 'bin', 'sbin', 'libexec', 'pkglib',
2427 'noinst', 'check');
2428 return if ! @proglist;
2430 my $seen_global_libobjs =
2431 var ('LDADD') && &handle_lib_objects ('', 'LDADD');
2433 foreach my $pair (@proglist)
2434 {
2435 my ($where, $one_file) = @$pair;
2437 my $seen_libobjs = 0;
2438 my $obj = get_object_extension '.$(OBJEXT)';
2440 # Strip any $(EXEEXT) suffix the user might have added, or this
2441 # will confuse &handle_source_transform and &check_canonical_spelling.
2442 # We'll add $(EXEEXT) back later anyway.
2443 $one_file =~ s/\$\(EXEEXT\)$//;
2445 $known_programs{$one_file} = $where;
2447 # Canonicalize names and check for misspellings.
2448 my $xname = &check_canonical_spelling ($one_file, '_LDADD', '_LDFLAGS',
2449 '_SOURCES', '_OBJECTS',
2450 '_DEPENDENCIES');
2452 $where->push_context ("while processing program `$one_file'");
2453 $where->set (INTERNAL->get);
2455 my $linker = &handle_source_transform ($xname, $one_file, $obj, $where,
2456 NONLIBTOOL => 1, LIBTOOL => 0);
2458 if (var ($xname . "_LDADD"))
2459 {
2460 $seen_libobjs = &handle_lib_objects ($xname, $xname . '_LDADD');
2461 }
2462 else
2463 {
2464 # User didn't define prog_LDADD override. So do it.
2465 &define_variable ($xname . '_LDADD', '$(LDADD)', $where);
2467 # This does a bit too much work. But we need it to
2468 # generate _DEPENDENCIES when appropriate.
2469 if (var ('LDADD'))
2470 {
2471 $seen_libobjs = &handle_lib_objects ($xname, 'LDADD');
2472 }
2473 }
2475 reject_var ($xname . '_LIBADD',
2476 "use `${xname}_LDADD', not `${xname}_LIBADD'");
2478 set_seen ($xname . '_DEPENDENCIES');
2479 set_seen ($xname . '_LDFLAGS');
2481 # Determine program to use for link.
2482 my $xlink = &define_per_target_linker_variable ($linker, $xname);
2484 # If the resulting program lies into a subdirectory,
2485 # make sure this directory will exist.
2486 my $dirstamp = require_build_directory_maybe ($one_file);
2488 $libtool_clean_directories{dirname ($one_file)} = 1;
2490 $output_rules .= &file_contents ('program',
2491 $where,
2492 PROGRAM => $one_file,
2493 XPROGRAM => $xname,
2494 XLINK => $xlink,
2495 DIRSTAMP => $dirstamp,
2496 EXEEXT => '$(EXEEXT)');
2498 if ($seen_libobjs || $seen_global_libobjs)
2499 {
2500 if (var ($xname . '_LDADD'))
2501 {
2502 &check_libobjs_sources ($xname, $xname . '_LDADD');
2503 }
2504 elsif (var ('LDADD'))
2505 {
2506 &check_libobjs_sources ($xname, 'LDADD');
2507 }
2508 }
2509 }
2510 }
2513 # handle_libraries ()
2514 # -------------------
2515 # Handle libraries.
2516 sub handle_libraries
2517 {
2518 my @liblist = &am_install_var ('libs', 'LIBRARIES',
2519 'lib', 'pkglib', 'noinst', 'check');
2520 return if ! @liblist;
2522 my @prefix = am_primary_prefixes ('LIBRARIES', 0, 'lib', 'pkglib',
2523 'noinst', 'check');
2525 if (@prefix)
2526 {
2527 my $var = rvar ($prefix[0] . '_LIBRARIES');
2528 $var->requires_variables ('library used', 'RANLIB');
2529 }
2531 &define_variable ('AR', 'ar', INTERNAL);
2532 &define_variable ('ARFLAGS', 'cru', INTERNAL);
2534 foreach my $pair (@liblist)
2535 {
2536 my ($where, $onelib) = @$pair;
2538 my $seen_libobjs = 0;
2539 # Check that the library fits the standard naming convention.
2540 my $bn = basename ($onelib);
2541 if ($bn !~ /^lib.*\.a$/)
2542 {
2543 $bn =~ s/^(?:lib)?(.*?)(?:\.[^.]*)?$/lib$1.a/;
2544 my $suggestion = dirname ($onelib) . "/$bn";
2545 $suggestion =~ s|^\./||g;
2546 msg ('error-gnu/warn', $where,
2547 "`$onelib' is not a standard library name\n"
2548 . "did you mean `$suggestion'?")
2549 }
2551 $where->push_context ("while processing library `$onelib'");
2552 $where->set (INTERNAL->get);
2554 my $obj = get_object_extension '.$(OBJEXT)';
2556 # Canonicalize names and check for misspellings.
2557 my $xlib = &check_canonical_spelling ($onelib, '_LIBADD', '_SOURCES',
2558 '_OBJECTS', '_DEPENDENCIES',
2559 '_AR');
2561 if (! var ($xlib . '_AR'))
2562 {
2563 &define_variable ($xlib . '_AR', '$(AR) $(ARFLAGS)', $where);
2564 }
2566 # Generate support for conditional object inclusion in
2567 # libraries.
2568 if (var ($xlib . '_LIBADD'))
2569 {
2570 if (&handle_lib_objects ($xlib, $xlib . '_LIBADD'))
2571 {
2572 $seen_libobjs = 1;
2573 }
2574 }
2575 else
2576 {
2577 &define_variable ($xlib . "_LIBADD", '', $where);
2578 }
2580 reject_var ($xlib . '_LDADD',
2581 "use `${xlib}_LIBADD', not `${xlib}_LDADD'");
2583 # Make sure we at look at this.
2584 set_seen ($xlib . '_DEPENDENCIES');
2586 &handle_source_transform ($xlib, $onelib, $obj, $where,
2587 NONLIBTOOL => 1, LIBTOOL => 0);
2589 # If the resulting library lies into a subdirectory,
2590 # make sure this directory will exist.
2591 my $dirstamp = require_build_directory_maybe ($onelib);
2593 $output_rules .= &file_contents ('library',
2594 $where,
2595 LIBRARY => $onelib,
2596 XLIBRARY => $xlib,
2597 DIRSTAMP => $dirstamp);
2599 if ($seen_libobjs)
2600 {
2601 if (var ($xlib . '_LIBADD'))
2602 {
2603 &check_libobjs_sources ($xlib, $xlib . '_LIBADD');
2604 }
2605 }
2606 }
2607 }
2610 # handle_ltlibraries ()
2611 # ---------------------
2612 # Handle shared libraries.
2613 sub handle_ltlibraries
2614 {
2615 my @liblist = &am_install_var ('ltlib', 'LTLIBRARIES',
2616 'noinst', 'lib', 'pkglib', 'check');
2617 return if ! @liblist;
2619 my @prefix = am_primary_prefixes ('LTLIBRARIES', 0, 'lib', 'pkglib',
2620 'noinst', 'check');
2622 if (@prefix)
2623 {
2624 my $var = rvar ($prefix[0] . '_LTLIBRARIES');
2625 $var->requires_variables ('Libtool library used', 'LIBTOOL');
2626 }
2628 my %instdirs = ();
2629 my %instsubdirs = ();
2630 my %instconds = ();
2631 my %liblocations = (); # Location (in Makefile.am) of each library.
2633 foreach my $key (@prefix)
2634 {
2635 # Get the installation directory of each library.
2636 my $dir = $key;
2637 my $strip_subdir = 1;
2638 if ($dir =~ /^nobase_/)
2639 {
2640 $dir =~ s/^nobase_//;
2641 $strip_subdir = 0;
2642 }
2643 my $var = rvar ($key . '_LTLIBRARIES');
2645 # We reject libraries which are installed in several places
2646 # in the same condition, because we can only specify one
2647 # `-rpath' option.
2648 $var->traverse_recursively
2649 (sub
2650 {
2651 my ($var, $val, $cond, $full_cond) = @_;
2652 my $hcond = $full_cond->human;
2653 my $where = $var->rdef ($cond)->location;
2654 my $ldir = '';
2655 $ldir = '/' . dirname ($val)
2656 if (!$strip_subdir);
2657 # A library cannot be installed in different directory
2658 # in overlapping conditions.
2659 if (exists $instconds{$val})
2660 {
2661 my ($msg, $acond) =
2662 $instconds{$val}->ambiguous_p ($val, $full_cond);
2664 if ($msg)
2665 {
2666 error ($where, $msg, partial => 1);
2667 my $dirtxt = "installed " . ($strip_subdir ? "in" : "below") . " `$dir'";
2668 $dirtxt = "built for `$dir'"
2669 if $dir eq 'EXTRA' || $dir eq 'noinst' || $dir eq 'check';
2670 my $dircond =
2671 $full_cond->true ? "" : " in condition $hcond";
2673 error ($where, "`$val' should be $dirtxt$dircond ...",
2674 partial => 1);
2676 my $hacond = $acond->human;
2677 my $adir = $instdirs{$val}{$acond};
2678 my $adirtxt = "installed in `$adir'";
2679 $adirtxt = "built for `$adir'"
2680 if ($adir eq 'EXTRA' || $adir eq 'noinst'
2681 || $adir eq 'check');
2682 my $adircond = $acond->true ? "" : " in condition $hacond";
2684 my $onlyone = ($dir ne $adir) ?
2685 ("\nLibtool libraries can be built for only one "
2686 . "destination.") : "";
2688 error ($liblocations{$val}{$acond},
2689 "... and should also be $adirtxt$adircond.$onlyone");
2690 return;
2691 }
2692 }
2693 else
2694 {
2695 $instconds{$val} = new Automake::DisjConditions;
2696 }
2697 $instdirs{$val}{$full_cond} = $dir;
2698 $instsubdirs{$val}{$full_cond} = $ldir;
2699 $liblocations{$val}{$full_cond} = $where;
2700 $instconds{$val} = $instconds{$val}->merge ($full_cond);
2701 },
2702 sub
2703 {
2704 return ();
2705 },
2706 skip_ac_subst => 1);
2707 }
2709 foreach my $pair (@liblist)
2710 {
2711 my ($where, $onelib) = @$pair;
2713 my $seen_libobjs = 0;
2714 my $obj = get_object_extension '.lo';
2716 # Canonicalize names and check for misspellings.
2717 my $xlib = &check_canonical_spelling ($onelib, '_LIBADD', '_LDFLAGS',
2718 '_SOURCES', '_OBJECTS',
2719 '_DEPENDENCIES');
2721 # Check that the library fits the standard naming convention.
2722 my $libname_rx = '^lib.*\.la';
2723 my $ldvar = var ("${xlib}_LDFLAGS") || var ('AM_LDFLAGS');
2724 my $ldvar2 = var ('LDFLAGS');
2725 if (($ldvar && grep (/-module/, $ldvar->value_as_list_recursive))
2726 || ($ldvar2 && grep (/-module/, $ldvar2->value_as_list_recursive)))
2727 {
2728 # Relax name checking for libtool modules.
2729 $libname_rx = '\.la';
2730 }
2732 my $bn = basename ($onelib);
2733 if ($bn !~ /$libname_rx$/)
2734 {
2735 my $type = 'library';
2736 if ($libname_rx eq '\.la')
2737 {
2738 $bn =~ s/^(lib|)(.*?)(?:\.[^.]*)?$/$1$2.la/;
2739 $type = 'module';
2740 }
2741 else
2742 {
2743 $bn =~ s/^(?:lib)?(.*?)(?:\.[^.]*)?$/lib$1.la/;
2744 }
2745 my $suggestion = dirname ($onelib) . "/$bn";
2746 $suggestion =~ s|^\./||g;
2747 msg ('error-gnu/warn', $where,
2748 "`$onelib' is not a standard libtool $type name\n"
2749 . "did you mean `$suggestion'?")
2750 }
2752 $where->push_context ("while processing Libtool library `$onelib'");
2753 $where->set (INTERNAL->get);
2755 # Make sure we look at these.
2756 set_seen ($xlib . '_LDFLAGS');
2757 set_seen ($xlib . '_DEPENDENCIES');
2759 # Generate support for conditional object inclusion in
2760 # libraries.
2761 if (var ($xlib . '_LIBADD'))
2762 {
2763 if (&handle_lib_objects ($xlib, $xlib . '_LIBADD'))
2764 {
2765 $seen_libobjs = 1;
2766 }
2767 }
2768 else
2769 {
2770 &define_variable ($xlib . "_LIBADD", '', $where);
2771 }
2773 reject_var ("${xlib}_LDADD",
2774 "use `${xlib}_LIBADD', not `${xlib}_LDADD'");
2777 my $linker = &handle_source_transform ($xlib, $onelib, $obj, $where,
2778 NONLIBTOOL => 0, LIBTOOL => 1);
2780 # Determine program to use for link.
2781 my $xlink = &define_per_target_linker_variable ($linker, $xlib);
2783 my $rpathvar = "am_${xlib}_rpath";
2784 my $rpath = "\$($rpathvar)";
2785 foreach my $rcond ($instconds{$onelib}->conds)
2786 {
2787 my $val;
2788 if ($instdirs{$onelib}{$rcond} eq 'EXTRA'
2789 || $instdirs{$onelib}{$rcond} eq 'noinst'
2790 || $instdirs{$onelib}{$rcond} eq 'check')
2791 {
2792 # It's an EXTRA_ library, so we can't specify -rpath,
2793 # because we don't know where the library will end up.
2794 # The user probably knows, but generally speaking automake
2795 # doesn't -- and in fact configure could decide
2796 # dynamically between two different locations.
2797 $val = '';
2798 }
2799 else
2800 {
2801 $val = ('-rpath $(' . $instdirs{$onelib}{$rcond} . 'dir)');
2802 $val .= $instsubdirs{$onelib}{$rcond}
2803 if defined $instsubdirs{$onelib}{$rcond};
2804 }
2805 if ($rcond->true)
2806 {
2807 # If $rcond is true there is only one condition and
2808 # there is no point defining an helper variable.
2809 $rpath = $val;
2810 }
2811 else
2812 {
2813 define_pretty_variable ($rpathvar, $rcond, INTERNAL, $val);
2814 }
2815 }
2817 # If the resulting library lies into a subdirectory,
2818 # make sure this directory will exist.
2819 my $dirstamp = require_build_directory_maybe ($onelib);
2821 # Remember to cleanup .libs/ in this directory.
2822 my $dirname = dirname $onelib;
2823 $libtool_clean_directories{$dirname} = 1;
2825 $output_rules .= &file_contents ('ltlibrary',
2826 $where,
2827 LTLIBRARY => $onelib,
2828 XLTLIBRARY => $xlib,
2829 RPATH => $rpath,
2830 XLINK => $xlink,
2831 DIRSTAMP => $dirstamp);
2832 if ($seen_libobjs)
2833 {
2834 if (var ($xlib . '_LIBADD'))
2835 {
2836 &check_libobjs_sources ($xlib, $xlib . '_LIBADD');
2837 }
2838 }
2839 }
2840 }
2842 # See if any _SOURCES variable were misspelled.
2843 sub check_typos ()
2844 {
2845 # It is ok if the user sets this particular variable.
2846 set_seen 'AM_LDFLAGS';
2848 foreach my $primary ('SOURCES', 'LIBADD', 'LDADD', 'LDFLAGS', 'DEPENDENCIES')
2849 {
2850 foreach my $var (variables $primary)
2851 {
2852 my $varname = $var->name;
2853 # A configure variable is always legitimate.
2854 next if exists $configure_vars{$varname};
2856 for my $cond ($var->conditions->conds)
2857 {
2858 $varname =~ /^(?:nobase_)?(?:dist_|nodist_)?(.*)_[[:alnum:]]+$/;
2859 msg_var ('syntax', $var, "variable `$varname' is defined but no"
2860 . " program or\nlibrary has `$1' as canonic name"
2861 . " (possible typo)")
2862 unless $var->rdef ($cond)->seen;
2863 }
2864 }
2865 }
2866 }
2869 # Handle scripts.
2870 sub handle_scripts
2871 {
2872 # NOTE we no longer automatically clean SCRIPTS, because it is
2873 # useful to sometimes distribute scripts verbatim. This happens
2874 # e.g. in Automake itself.
2875 &am_install_var ('-candist', 'scripts', 'SCRIPTS',
2876 'bin', 'sbin', 'libexec', 'pkgdata',
2877 'noinst', 'check');
2878 }
2883 ## ------------------------ ##
2884 ## Handling Texinfo files. ##
2885 ## ------------------------ ##
2887 # ($OUTFILE, $VFILE, @CLEAN_FILES)
2888 # &scan_texinfo_file ($FILENAME)
2889 # ------------------------------
2890 # $OUTFILE - name of the info file produced by $FILENAME.
2891 # $VFILE - name of the version.texi file used (undef if none).
2892 # @CLEAN_FILES - list of byproducts (indexes etc.)
2893 sub scan_texinfo_file ($)
2894 {
2895 my ($filename) = @_;
2897 # Some of the following extensions are always created, no matter
2898 # whether indexes are used or not. Other (like cps, fns, ... pgs)
2899 # are only created when they are used. We used to scan $FILENAME
2900 # for their use, but that is not enough: they could be used in
2901 # included files. We can't scan included files because we don't
2902 # know the include path. Therefore we always erase these files, no
2903 # matter whether they are used or not.
2904 #
2905 # (tmp is only created if an @macro is used and a certain e-TeX
2906 # feature is not available.)
2907 my %clean_suffixes =
2908 map { $_ => 1 } (qw(aux log toc tmp
2909 cp cps
2910 fn fns
2911 ky kys
2912 vr vrs
2913 tp tps
2914 pg pgs)); # grep 'new.*index' texinfo.tex
2916 my $texi = new Automake::XFile "< $filename";
2917 verb "reading $filename";
2919 my ($outfile, $vfile);
2920 while ($_ = $texi->getline)
2921 {
2922 if (/^\@setfilename +(\S+)/)
2923 {
2924 # Honor only the first @setfilename. (It's possible to have
2925 # more occurrences later if the manual shows examples of how
2926 # to use @setfilename...)
2927 next if $outfile;
2929 $outfile = $1;
2930 if ($outfile =~ /\.([^.]+)$/ && $1 ne 'info')
2931 {
2932 error ("$filename:$.",
2933 "output `$outfile' has unrecognized extension");
2934 return;
2935 }
2936 }
2937 # A "version.texi" file is actually any file whose name matches
2938 # "vers*.texi".
2939 elsif (/^\@include\s+(vers[^.]*\.texi)\s*$/)
2940 {
2941 $vfile = $1;
2942 }
2944 # Try to find new or unused indexes.
2946 # Creating a new category of index.
2947 elsif (/^\@def(code)?index (\w+)/)
2948 {
2949 $clean_suffixes{$2} = 1;
2950 $clean_suffixes{"$2s"} = 1;
2951 }
2953 # Merging an index into an another.
2954 elsif (/^\@syn(code)?index (\w+) (\w+)/)
2955 {
2956 delete $clean_suffixes{"$2s"};
2957 $clean_suffixes{"$3s"} = 1;
2958 }
2960 }
2962 if (! $outfile)
2963 {
2964 err_am "`$filename' missing \@setfilename";
2965 return;
2966 }
2968 my $infobase = basename ($filename);
2969 $infobase =~ s/\.te?xi(nfo)?$//;
2970 return ($outfile, $vfile,
2971 map { "$infobase.$_" } (sort keys %clean_suffixes));
2972 }
2975 # ($DIRSTAMP, @CLEAN_FILES)
2976 # output_texinfo_build_rules ($SOURCE, $DEST, $INSRC, @DEPENDENCIES)
2977 # ------------------------------------------------------------------
2978 # SOURCE - the source Texinfo file
2979 # DEST - the destination Info file
2980 # INSRC - wether DEST should be built in the source tree
2981 # DEPENDENCIES - known dependencies
2982 sub output_texinfo_build_rules ($$$@)
2983 {
2984 my ($source, $dest, $insrc, @deps) = @_;
2986 # Split `a.texi' into `a' and `.texi'.
2987 my ($spfx, $ssfx) = ($source =~ /^(.*?)(\.[^.]*)?$/);
2988 my ($dpfx, $dsfx) = ($dest =~ /^(.*?)(\.[^.]*)?$/);
2990 $ssfx ||= "";
2991 $dsfx ||= "";
2993 # We can output two kinds of rules: the "generic" rules use Make
2994 # suffix rules and are appropriate when $source and $dest do not lie
2995 # in a sub-directory; the "specific" rules are needed in the other
2996 # case.
2997 #
2998 # The former are output only once (this is not really apparent here,
2999 # but just remember that some logic deeper in Automake will not
3000 # output the same rule twice); while the later need to be output for
3001 # each Texinfo source.
3002 my $generic;
3003 my $makeinfoflags;
3004 my $sdir = dirname $source;
3005 if ($sdir eq '.' && dirname ($dest) eq '.')
3006 {
3007 $generic = 1;
3008 $makeinfoflags = '-I $(srcdir)';
3009 }
3010 else
3011 {
3012 $generic = 0;
3013 $makeinfoflags = "-I $sdir -I \$(srcdir)/$sdir";
3014 }
3016 # A directory can contain two kinds of info files: some built in the
3017 # source tree, and some built in the build tree. The rules are
3018 # different in each case. However we cannot output two different
3019 # set of generic rules. Because in-source builds are more usual, we
3020 # use generic rules in this case and fall back to "specific" rules
3021 # for build-dir builds. (It should not be a problem to invert this
3022 # if needed.)
3023 $generic = 0 unless $insrc;
3025 # We cannot use a suffix rule to build info files with an empty
3026 # extension. Otherwise we would output a single suffix inference
3027 # rule, with separate dependencies, as in
3028 #
3029 # .texi:
3030 # $(MAKEINFO) ...
3031 # foo.info: foo.texi
3032 #
3033 # which confuse Solaris make. (See the Autoconf manual for
3034 # details.) Therefore we use a specific rule in this case. This
3035 # applies to info files only (dvi and pdf files always have an
3036 # extension).
3037 my $generic_info = ($generic && $dsfx) ? 1 : 0;
3039 # If the resulting file lie into a subdirectory,
3040 # make sure this directory will exist.
3041 my $dirstamp = require_build_directory_maybe ($dest);
3043 my $dipfx = ($insrc ? '$(srcdir)/' : '') . $dpfx;
3045 $output_rules .= file_contents ('texibuild',
3046 new Automake::Location,
3047 DEPS => "@deps",
3048 DEST_PREFIX => $dpfx,
3049 DEST_INFO_PREFIX => $dipfx,
3050 DEST_SUFFIX => $dsfx,
3051 DIRSTAMP => $dirstamp,
3052 GENERIC => $generic,
3053 GENERIC_INFO => $generic_info,
3054 INSRC => $insrc,
3055 MAKEINFOFLAGS => $makeinfoflags,
3056 SOURCE => ($generic
3057 ? '$<' : $source),
3058 SOURCE_INFO => ($generic_info
3059 ? '$<' : $source),
3060 SOURCE_REAL => $source,
3061 SOURCE_SUFFIX => $ssfx,
3062 );
3063 return ($dirstamp, "$dpfx.dvi", "$dpfx.pdf", "$dpfx.ps", "$dpfx.html");
3064 }
3067 # $TEXICLEANS
3068 # handle_texinfo_helper ($info_texinfos)
3069 # --------------------------------------
3070 # Handle all Texinfo source; helper for handle_texinfo.
3071 sub handle_texinfo_helper ($)
3072 {
3073 my ($info_texinfos) = @_;
3074 my (@infobase, @info_deps_list, @texi_deps);
3075 my %versions;
3076 my $done = 0;
3077 my @texi_cleans;
3079 # Build a regex matching user-cleaned files.
3080 my $d = var 'DISTCLEANFILES';
3081 my $c = var 'CLEANFILES';
3082 my @f = ();
3083 push @f, $d->value_as_list_recursive (inner_expand => 1) if $d;
3084 push @f, $c->value_as_list_recursive (inner_expand => 1) if $c;
3085 @f = map { s|[^A-Za-z_0-9*\[\]\-]|\\$&|g; s|\*|[^/]*|g; $_; } @f;
3086 my $user_cleaned_files = '^(?:' . join ('|', @f) . ')$';
3088 foreach my $texi
3089 ($info_texinfos->value_as_list_recursive (inner_expand => 1))
3090 {
3091 my $infobase = $texi;
3092 $infobase =~ s/\.(txi|texinfo|texi)$//;
3094 if ($infobase eq $texi)
3095 {
3096 # FIXME: report line number.
3097 err_am "texinfo file `$texi' has unrecognized extension";
3098 next;
3099 }
3101 push @infobase, $infobase;
3103 # If 'version.texi' is referenced by input file, then include
3104 # automatic versioning capability.
3105 my ($out_file, $vtexi, @clean_files) =
3106 scan_texinfo_file ("$relative_dir/$texi")
3107 or next;
3108 push (@texi_cleans, @clean_files);
3110 # If the Texinfo source is in a subdirectory, create the
3111 # resulting info in this subdirectory. If it is in the current
3112 # directory, try hard to not prefix "./" because it breaks the
3113 # generic rules.
3114 my $outdir = dirname ($texi) . '/';
3115 $outdir = "" if $outdir eq './';
3116 $out_file = $outdir . $out_file;
3118 # Until Automake 1.6.3, .info files were built in the
3119 # source tree. This was an obstacle to the support of
3120 # non-distributed .info files, and non-distributed .texi
3121 # files.
3122 #
3123 # * Non-distributed .texi files is important in some packages
3124 # where .texi files are built at make time, probably using
3125 # other binaries built in the package itself, maybe using
3126 # tools or information found on the build host. Because
3127 # these files are not distributed they are always rebuilt
3128 # at make time; they should therefore not lie in the source
3129 # directory. One plan was to support this using
3130 # nodist_info_TEXINFOS or something similar. (Doing this
3131 # requires some sanity checks. For instance Automake should
3132 # not allow:
3133 # dist_info_TEXINFOS = foo.texi
3134 # nodist_foo_TEXINFOS = included.texi
3135 # because a distributed file should never depend on a
3136 # non-distributed file.)
3137 #
3138 # * If .texi files are not distributed, then .info files should
3139 # not be distributed either. There are also cases where one
3140 # wants to distribute .texi files, but does not want to
3141 # distribute the .info files. For instance the Texinfo package
3142 # distributes the tool used to build these files; it would
3143 # be a waste of space to distribute them. It's not clear
3144 # which syntax we should use to indicate that .info files should
3145 # not be distributed. Akim Demaille suggested that eventually
3146 # we switch to a new syntax:
3147 # | Maybe we should take some inspiration from what's already
3148 # | done in the rest of Automake. Maybe there is too much
3149 # | syntactic sugar here, and you want
3150 # | nodist_INFO = bar.info
3151 # | dist_bar_info_SOURCES = bar.texi
3152 # | bar_texi_DEPENDENCIES = foo.texi
3153 # | with a bit of magic to have bar.info represent the whole
3154 # | bar*info set. That's a lot more verbose that the current
3155 # | situation, but it is # not new, hence the user has less
3156 # | to learn.
3157 # |
3158 # | But there is still too much room for meaningless specs:
3159 # | nodist_INFO = bar.info
3160 # | dist_bar_info_SOURCES = bar.texi
3161 # | dist_PS = bar.ps something-written-by-hand.ps
3162 # | nodist_bar_ps_SOURCES = bar.texi
3163 # | bar_texi_DEPENDENCIES = foo.texi
3164 # | here bar.texi is dist_ in line 2, and nodist_ in 4.
3165 #
3166 # Back to the point, it should be clear that in order to support
3167 # non-distributed .info files, we need to build them in the
3168 # build tree, not in the source tree (non-distributed .texi
3169 # files are less of a problem, because we do not output build
3170 # rules for them). In Automake 1.7 .info build rules have been
3171 # largely cleaned up so that .info files get always build in the
3172 # build tree, even when distributed. The idea was that
3173 # (1) if during a VPATH build the .info file was found to be
3174 # absent or out-of-date (in the source tree or in the
3175 # build tree), Make would rebuild it in the build tree.
3176 # If an up-to-date source-tree of the .info file existed,
3177 # make would not rebuild it in the build tree.
3178 # (2) having two copies of .info files, one in the source tree
3179 # and one (newer) in the build tree is not a problem
3180 # because `make dist' always pick files in the build tree
3181 # first.
3182 # However it turned out the be a bad idea for several reasons:
3183 # * Tru64, OpenBSD, and FreeBSD (not NetBSD) Make do not behave
3184 # like GNU Make on point (1) above. These implementations
3185 # of Make would always rebuild .info files in the build
3186 # tree, even if such files were up to date in the source
3187 # tree. Consequently, it was impossible to perform a VPATH
3188 # build of a package containing Texinfo files using these
3189 # Make implementations.
3190 # (Refer to the Autoconf Manual, section "Limitation of
3191 # Make", paragraph "VPATH", item "target lookup", for
3192 # an account of the differences between these
3193 # implementations.)
3194 # * The GNU Coding Standards require these files to be built
3195 # in the source-tree (when they are distributed, that is).
3196 # * Keeping a fresher copy of distributed files in the
3197 # build tree can be annoying during development because
3198 # - if the files is kept under CVS, you really want it
3199 # to be updated in the source tree
3200 # - it is confusing that `make distclean' does not erase
3201 # all files in the build tree.
3202 #
3203 # Consequently, starting with Automake 1.8, .info files are
3204 # built in the source tree again. Because we still plan to
3205 # support non-distributed .info files at some point, we
3206 # have a single variable ($INSRC) that controls whether
3207 # the current .info file must be built in the source tree
3208 # or in the build tree. Actually this variable is switched
3209 # off for .info files that appear to be cleaned; this is
3210 # for backward compatibility with package such as Texinfo,
3211 # which do things like
3212 # info_TEXINFOS = texinfo.txi info-stnd.texi info.texi
3213 # DISTCLEANFILES = texinfo texinfo-* info*.info*
3214 # # Do not create info files for distribution.
3215 # dist-info:
3216 # in order not to distribute .info files.
3217 my $insrc = ($out_file =~ $user_cleaned_files) ? 0 : 1;
3219 my $soutdir = '$(srcdir)/' . $outdir;
3220 $outdir = $soutdir if $insrc;
3222 # If user specified file_TEXINFOS, then use that as explicit
3223 # dependency list.
3224 @texi_deps = ();
3225 push (@texi_deps, "$soutdir$vtexi") if $vtexi;
3227 my $canonical = canonicalize ($infobase);
3228 if (var ($canonical . "_TEXINFOS"))
3229 {
3230 push (@texi_deps, '$(' . $canonical . '_TEXINFOS)');
3231 push_dist_common ('$(' . $canonical . '_TEXINFOS)');
3232 }
3234 my ($dirstamp, @cfiles) =
3235 output_texinfo_build_rules ($texi, $out_file, $insrc, @texi_deps);
3236 push (@texi_cleans, @cfiles);
3238 push (@info_deps_list, $out_file);
3240 # If a vers*.texi file is needed, emit the rule.
3241 if ($vtexi)
3242 {
3243 err_am ("`$vtexi', included in `$texi', "
3244 . "also included in `$versions{$vtexi}'")
3245 if defined $versions{$vtexi};
3246 $versions{$vtexi} = $texi;
3248 # We number the stamp-vti files. This is doable since the
3249 # actual names don't matter much. We only number starting
3250 # with the second one, so that the common case looks nice.
3251 my $vti = ($done ? $done : 'vti');
3252 ++$done;
3254 # This is ugly, but it is our historical practice.
3255 if ($config_aux_dir_set_in_configure_ac)
3256 {
3257 require_conf_file_with_macro (TRUE, 'info_TEXINFOS', FOREIGN,
3258 'mdate-sh');
3259 }
3260 else
3261 {
3262 require_file_with_macro (TRUE, 'info_TEXINFOS',
3263 FOREIGN, 'mdate-sh');
3264 }
3266 my $conf_dir;
3267 if ($config_aux_dir_set_in_configure_ac)
3268 {
3269 $conf_dir = "$am_config_aux_dir/";
3270 }
3271 else
3272 {
3273 $conf_dir = '$(srcdir)/';
3274 }
3275 $output_rules .= file_contents ('texi-vers',
3276 new Automake::Location,
3277 TEXI => $texi,
3278 VTI => $vti,
3279 STAMPVTI => "${soutdir}stamp-$vti",
3280 VTEXI => "$soutdir$vtexi",
3281 MDDIR => $conf_dir,
3282 DIRSTAMP => $dirstamp);
3283 }
3284 }
3286 # Handle location of texinfo.tex.
3287 my $need_texi_file = 0;
3288 my $texinfodir;
3289 if (var ('TEXINFO_TEX'))
3290 {
3291 # The user defined TEXINFO_TEX so assume he knows what he is
3292 # doing.
3293 $texinfodir = ('$(srcdir)/'
3294 . dirname (variable_value ('TEXINFO_TEX')));
3295 }
3296 elsif (option 'cygnus')
3297 {
3298 $texinfodir = '$(top_srcdir)/../texinfo';
3299 define_variable ('TEXINFO_TEX', "$texinfodir/texinfo.tex", INTERNAL);
3300 }
3301 elsif ($config_aux_dir_set_in_configure_ac)
3302 {
3303 $texinfodir = $am_config_aux_dir;
3304 define_variable ('TEXINFO_TEX', "$texinfodir/texinfo.tex", INTERNAL);
3305 $need_texi_file = 2; # so that we require_conf_file later
3306 }
3307 else
3308 {
3309 $texinfodir = '$(srcdir)';
3310 $need_texi_file = 1;
3311 }
3312 define_variable ('am__TEXINFO_TEX_DIR', $texinfodir, INTERNAL);
3314 push (@dist_targets, 'dist-info');
3316 if (! option 'no-installinfo')
3317 {
3318 # Make sure documentation is made and installed first. Use
3319 # $(INFO_DEPS), not 'info', because otherwise recursive makes
3320 # get run twice during "make all".
3321 unshift (@all, '$(INFO_DEPS)');
3322 }
3324 define_files_variable ("DVIS", @infobase, 'dvi', INTERNAL);
3325 define_files_variable ("PDFS", @infobase, 'pdf', INTERNAL);
3326 define_files_variable ("PSS", @infobase, 'ps', INTERNAL);
3327 define_files_variable ("HTMLS", @infobase, 'html', INTERNAL);
3329 # This next isn't strictly needed now -- the places that look here
3330 # could easily be changed to look in info_TEXINFOS. But this is
3331 # probably better, in case noinst_TEXINFOS is ever supported.
3332 define_variable ("TEXINFOS", variable_value ('info_TEXINFOS'), INTERNAL);
3334 # Do some error checking. Note that this file is not required
3335 # when in Cygnus mode; instead we defined TEXINFO_TEX explicitly
3336 # up above.
3337 if ($need_texi_file && ! option 'no-texinfo.tex')
3338 {
3339 if ($need_texi_file > 1)
3340 {
3341 require_conf_file_with_macro (TRUE, 'info_TEXINFOS', FOREIGN,
3342 'texinfo.tex');
3343 }
3344 else
3345 {
3346 require_file_with_macro (TRUE, 'info_TEXINFOS', FOREIGN,
3347 'texinfo.tex');
3348 }
3349 }
3351 return makefile_wrap ("", "\t ", @texi_cleans);
3352 }
3355 # handle_texinfo ()
3356 # -----------------
3357 # Handle all Texinfo source.
3358 sub handle_texinfo ()
3359 {
3360 reject_var 'TEXINFOS', "`TEXINFOS' is an anachronism; use `info_TEXINFOS'";
3361 # FIXME: I think this is an obsolete future feature name.
3362 reject_var 'html_TEXINFOS', "HTML generation not yet supported";
3364 my $info_texinfos = var ('info_TEXINFOS');
3365 my $texiclean = "";
3366 if ($info_texinfos)
3367 {
3368 $texiclean = handle_texinfo_helper ($info_texinfos);
3369 }
3370 $output_rules .= file_contents ('texinfos',
3371 new Automake::Location,
3372 TEXICLEAN => $texiclean,
3373 'LOCAL-TEXIS' => !!$info_texinfos);
3374 }
3377 # Handle any man pages.
3378 sub handle_man_pages
3379 {
3380 reject_var 'MANS', "`MANS' is an anachronism; use `man_MANS'";
3382 # Find all the sections in use. We do this by first looking for
3383 # "standard" sections, and then looking for any additional
3384 # sections used in man_MANS.
3385 my (%sections, %notrans_sections, %trans_sections,
3386 %notrans_vars, %trans_vars, %notrans_sect_vars, %trans_sect_vars);
3387 # We handle nodist_ for uniformity. man pages aren't distributed
3388 # by default so it isn't actually very important.
3389 foreach my $npfx ('', 'notrans_')
3390 {
3391 foreach my $pfx ('', 'dist_', 'nodist_')
3392 {
3393 # Add more sections as needed.
3394 foreach my $section ('0'..'9', 'n', 'l')
3395 {
3396 my $varname = $npfx . $pfx . 'man' . $section . '_MANS';
3397 if (var ($varname))
3398 {
3399 $sections{$section} = 1;
3400 $varname = '$(' . $varname . ')';
3401 if ($npfx eq 'notrans_')
3402 {
3403 $notrans_sections{$section} = 1;
3404 $notrans_sect_vars{$varname} = 1;
3405 }
3406 else
3407 {
3408 $trans_sections{$section} = 1;
3409 $trans_sect_vars{$varname} = 1;
3410 }
3412 &push_dist_common ($varname)
3413 if $pfx eq 'dist_';
3414 }
3415 }
3417 my $varname = $npfx . $pfx . 'man_MANS';
3418 my $var = var ($varname);
3419 if ($var)
3420 {
3421 foreach ($var->value_as_list_recursive)
3422 {
3423 # A page like `foo.1c' goes into man1dir.
3424 if (/\.([0-9a-z])([a-z]*)$/)
3425 {
3426 $sections{$1} = 1;
3427 if ($npfx eq 'notrans_')
3428 {
3429 $notrans_sections{$1} = 1;
3430 }
3431 else
3432 {
3433 $trans_sections{$1} = 1;
3434 }
3435 }
3436 }
3438 $varname = '$(' . $varname . ')';
3439 if ($npfx eq 'notrans_')
3440 {
3441 $notrans_vars{$varname} = 1;
3442 }
3443 else
3444 {
3445 $trans_vars{$varname} = 1;
3446 }
3447 &push_dist_common ($varname)
3448 if $pfx eq 'dist_';
3449 }
3450 }
3451 }
3453 return unless %sections;
3455 my @unsorted_deps;
3457 # Build section independent variables.
3458 my $have_notrans = %notrans_vars;
3459 my @notrans_list = sort keys %notrans_vars;
3460 my $have_trans = %trans_vars;
3461 my @trans_list = sort keys %trans_vars;
3463 # Now for each section, generate an install and uninstall rule.
3464 # Sort sections so output is deterministic.
3465 foreach my $section (sort keys %sections)
3466 {
3467 # Build section dependent variables.
3468 my $notrans_mans = $have_notrans || exists $notrans_sections{$section};
3469 my $trans_mans = $have_trans || exists $trans_sections{$section};
3470 my (%notrans_this_sect, %trans_this_sect);
3471 my $expr = 'man' . $section . '_MANS';
3472 foreach my $varname (keys %notrans_sect_vars)
3473 {
3474 if ($varname =~ /$expr/)
3475 {
3476 $notrans_this_sect{$varname} = 1;
3477 }
3478 }
3479 foreach my $varname (keys %trans_sect_vars)
3480 {
3481 if ($varname =~ /$expr/)
3482 {
3483 $trans_this_sect{$varname} = 1;
3484 }
3485 }
3486 my @notrans_sect_list = sort keys %notrans_this_sect;
3487 my @trans_sect_list = sort keys %trans_this_sect;
3488 @unsorted_deps = (keys %notrans_vars, keys %trans_vars,
3489 keys %notrans_this_sect, keys %trans_this_sect);
3490 my @deps = sort @unsorted_deps;
3491 $output_rules .= &file_contents ('mans',
3492 new Automake::Location,
3493 SECTION => $section,
3494 DEPS => "@deps",
3495 NOTRANS_MANS => $notrans_mans,
3496 NOTRANS_SECT_LIST => "@notrans_sect_list",
3497 HAVE_NOTRANS => $have_notrans,
3498 NOTRANS_LIST => "@notrans_list",
3499 TRANS_MANS => $trans_mans,
3500 TRANS_SECT_LIST => "@trans_sect_list",
3501 HAVE_TRANS => $have_trans,
3502 TRANS_LIST => "@trans_list");
3503 }
3505 @unsorted_deps = (keys %notrans_vars, keys %trans_vars,
3506 keys %notrans_sect_vars, keys %trans_sect_vars);
3507 my @mans = sort @unsorted_deps;
3508 $output_vars .= file_contents ('mans-vars',
3509 new Automake::Location,
3510 MANS => "@mans");
3512 push (@all, '$(MANS)')
3513 unless option 'no-installman';
3514 }
3516 # Handle DATA variables.
3517 sub handle_data
3518 {
3519 &am_install_var ('-noextra', '-candist', 'data', 'DATA',
3520 'data', 'dataroot', 'dvi', 'html', 'pdf', 'ps',
3521 'sysconf', 'sharedstate', 'localstate',
3522 'pkgdata', 'lisp', 'noinst', 'check');
3523 }
3525 # Handle TAGS.
3526 sub handle_tags
3527 {
3528 my @tag_deps = ();
3529 my @ctag_deps = ();
3530 if (var ('SUBDIRS'))
3531 {
3532 $output_rules .= ("tags-recursive:\n"
3533 . "\tlist=\'\$(SUBDIRS)\'; for subdir in \$\$list; do \\\n"
3534 # Never fail here if a subdir fails; it
3535 # isn't important.
3536 . "\t test \"\$\$subdir\" = . || (\$(am__cd) \$\$subdir"
3537 . " && \$(MAKE) \$(AM_MAKEFLAGS) tags); \\\n"
3538 . "\tdone\n");
3539 push (@tag_deps, 'tags-recursive');
3540 &depend ('.PHONY', 'tags-recursive');
3542 $output_rules .= ("ctags-recursive:\n"
3543 . "\tlist=\'\$(SUBDIRS)\'; for subdir in \$\$list; do \\\n"
3544 # Never fail here if a subdir fails; it
3545 # isn't important.
3546 . "\t test \"\$\$subdir\" = . || (\$(am__cd) \$\$subdir"
3547 . " && \$(MAKE) \$(AM_MAKEFLAGS) ctags); \\\n"
3548 . "\tdone\n");
3549 push (@ctag_deps, 'ctags-recursive');
3550 &depend ('.PHONY', 'ctags-recursive');
3551 }
3553 if (&saw_sources_p (1)
3554 || var ('ETAGS_ARGS')
3555 || @tag_deps)
3556 {
3557 my @config;
3558 foreach my $spec (@config_headers)
3559 {
3560 my ($out, @ins) = split_config_file_spec ($spec);
3561 foreach my $in (@ins)
3562 {
3563 # If the config header source is in this directory,
3564 # require it.
3565 push @config, basename ($in)
3566 if $relative_dir eq dirname ($in);
3567 }
3568 }
3569 $output_rules .= &file_contents ('tags',
3570 new Automake::Location,
3571 CONFIG => "@config",
3572 TAGSDIRS => "@tag_deps",
3573 CTAGSDIRS => "@ctag_deps");
3575 set_seen 'TAGS_DEPENDENCIES';
3576 }
3577 elsif (reject_var ('TAGS_DEPENDENCIES',
3578 "doesn't make sense to define `TAGS_DEPENDENCIES'"
3579 . "without\nsources or `ETAGS_ARGS'"))
3580 {
3581 }
3582 else
3583 {
3584 # Every Makefile must define some sort of TAGS rule.
3585 # Otherwise, it would be possible for a top-level "make TAGS"
3586 # to fail because some subdirectory failed.
3587 $output_rules .= "tags: TAGS\nTAGS:\n\n";
3588 # Ditto ctags.
3589 $output_rules .= "ctags: CTAGS\nCTAGS:\n\n";
3590 }
3591 }
3593 # Handle multilib support.
3594 sub handle_multilib
3595 {
3596 if ($seen_multilib && $relative_dir eq '.')
3597 {
3598 $output_rules .= &file_contents ('multilib', new Automake::Location);
3599 push (@all, 'all-multi');
3600 }
3601 }
3604 # user_phony_rule ($NAME)
3605 # -----------------------
3606 # Return false if rule $NAME does not exist. Otherwise,
3607 # declare it as phony, complete its definition (in case it is
3608 # conditional), and return its Automake::Rule instance.
3609 sub user_phony_rule ($)
3610 {
3611 my ($name) = @_;
3612 my $rule = rule $name;
3613 if ($rule)
3614 {
3615 depend ('.PHONY', $name);
3616 # Define $NAME in all condition where it is not already defined,
3617 # so that it is always OK to depend on $NAME.
3618 for my $c ($rule->not_always_defined_in_cond (TRUE)->conds)
3619 {
3620 Automake::Rule::define ($name, 'internal', RULE_AUTOMAKE,
3621 $c, INTERNAL);
3622 $output_rules .= $c->subst_string . "$name:\n";
3623 }
3624 }
3625 return $rule;
3626 }
3629 # $BOOLEAN
3630 # &for_dist_common ($A, $B)
3631 # -------------------------
3632 # Subroutine for &handle_dist: sort files to dist.
3633 #
3634 # We put README first because it then becomes easier to make a
3635 # Usenet-compliant shar file (in these, README must be first).
3636 #
3637 # FIXME: do more ordering of files here.
3638 sub for_dist_common
3639 {
3640 return 0
3641 if $a eq $b;
3642 return -1
3643 if $a eq 'README';
3644 return 1
3645 if $b eq 'README';
3646 return $a cmp $b;
3647 }
3649 # handle_dist
3650 # -----------
3651 # Handle 'dist' target.
3652 sub handle_dist ()
3653 {
3654 # Substitutions for distdir.am
3655 my %transform;
3657 # Define DIST_SUBDIRS. This must always be done, regardless of the
3658 # no-dist setting: target like `distclean' or `maintainer-clean' use it.
3659 my $subdirs = var ('SUBDIRS');
3660 if ($subdirs)
3661 {
3662 # If SUBDIRS is conditionally defined, then set DIST_SUBDIRS
3663 # to all possible directories, and use it. If DIST_SUBDIRS is
3664 # defined, just use it.
3666 # Note that we check DIST_SUBDIRS first on purpose, so that
3667 # we don't call has_conditional_contents for now reason.
3668 # (In the past one project used so many conditional subdirectories
3669 # that calling has_conditional_contents on SUBDIRS caused
3670 # automake to grow to 150Mb -- this should not happen with
3671 # the current implementation of has_conditional_contents,
3672 # but it's more efficient to avoid the call anyway.)
3673 if (var ('DIST_SUBDIRS'))
3674 {
3675 }
3676 elsif ($subdirs->has_conditional_contents)
3677 {
3678 define_pretty_variable
3679 ('DIST_SUBDIRS', TRUE, INTERNAL,
3680 uniq ($subdirs->value_as_list_recursive));
3681 }
3682 else
3683 {
3684 # We always define this because that is what `distclean'
3685 # wants.
3686 define_pretty_variable ('DIST_SUBDIRS', TRUE, INTERNAL,
3687 '$(SUBDIRS)');
3688 }
3689 }
3691 # The remaining definitions are only required when a dist target is used.
3692 return if option 'no-dist';
3694 # At least one of the archive formats must be enabled.
3695 if ($relative_dir eq '.')
3696 {
3697 my $archive_defined = option 'no-dist-gzip' ? 0 : 1;
3698 $archive_defined ||=
3699 grep { option "dist-$_" } qw(shar zip tarZ bzip2 lzma);
3700 error (option 'no-dist-gzip',
3701 "no-dist-gzip specified but no dist-* specified, "
3702 . "at least one archive format must be enabled")
3703 unless $archive_defined;
3704 }
3706 # Look for common files that should be included in distribution.
3707 # If the aux dir is set, and it does not have a Makefile.am, then
3708 # we check for these files there as well.
3709 my $check_aux = 0;
3710 if ($relative_dir eq '.'
3711 && $config_aux_dir_set_in_configure_ac)
3712 {
3713 if (! &is_make_dir ($config_aux_dir))
3714 {
3715 $check_aux = 1;
3716 }
3717 }
3718 foreach my $cfile (@common_files)
3719 {
3720 if (dir_has_case_matching_file ($relative_dir, $cfile)
3721 # The file might be absent, but if it can be built it's ok.
3722 || rule $cfile)
3723 {
3724 &push_dist_common ($cfile);
3725 }
3727 # Don't use `elsif' here because a file might meaningfully
3728 # appear in both directories.
3729 if ($check_aux && dir_has_case_matching_file ($config_aux_dir, $cfile))
3730 {
3731 &push_dist_common ("$config_aux_dir/$cfile")
3732 }
3733 }
3735 # We might copy elements from $configure_dist_common to
3736 # %dist_common if we think we need to. If the file appears in our
3737 # directory, we would have discovered it already, so we don't
3738 # check that. But if the file is in a subdir without a Makefile,
3739 # we want to distribute it here if we are doing `.'. Ugly!
3740 if ($relative_dir eq '.')
3741 {
3742 foreach my $file (split (' ' , $configure_dist_common))
3743 {
3744 push_dist_common ($file)
3745 unless is_make_dir (dirname ($file));
3746 }
3747 }
3749 # Files to distributed. Don't use ->value_as_list_recursive
3750 # as it recursively expands `$(dist_pkgdata_DATA)' etc.
3751 my @dist_common = split (' ', rvar ('DIST_COMMON')->variable_value);
3752 @dist_common = uniq (sort for_dist_common (@dist_common));
3753 variable_delete 'DIST_COMMON';
3754 define_pretty_variable ('DIST_COMMON', TRUE, INTERNAL, @dist_common);
3756 # Now that we've processed DIST_COMMON, disallow further attempts
3757 # to set it.
3758 $handle_dist_run = 1;
3760 # Scan EXTRA_DIST to see if we need to distribute anything from a
3761 # subdir. If so, add it to the list. I didn't want to do this
3762 # originally, but there were so many requests that I finally
3763 # relented.
3764 my $extra_dist = var ('EXTRA_DIST');
3766 $transform{'DISTCHECK-HOOK'} = !! rule 'distcheck-hook';
3767 $transform{'GETTEXT'} = $seen_gettext && !$seen_gettext_external;
3769 # If the target `dist-hook' exists, make sure it is run. This
3770 # allows users to do random weird things to the distribution
3771 # before it is packaged up.
3772 push (@dist_targets, 'dist-hook')
3773 if user_phony_rule 'dist-hook';
3774 $transform{'DIST-TARGETS'} = join (' ', @dist_targets);
3776 my $flm = option ('filename-length-max');
3777 my $filename_filter = $flm ? '.' x $flm->[1] : '';
3779 $output_rules .= &file_contents ('distdir',
3780 new Automake::Location,
3781 %transform,
3782 FILENAME_FILTER => $filename_filter);
3783 }
3786 # check_directory ($NAME, $WHERE)
3787 # -------------------------------
3788 # Ensure $NAME is a directory, and that it uses sane name.
3789 # Use $WHERE as a location in the diagnostic, if any.
3790 sub check_directory ($$)
3791 {
3792 my ($dir, $where) = @_;
3794 error $where, "required directory $relative_dir/$dir does not exist"
3795 unless -d "$relative_dir/$dir";
3797 # If an `obj/' directory exists, BSD make will enter it before
3798 # reading `Makefile'. Hence the `Makefile' in the current directory
3799 # will not be read.
3800 #
3801 # % cat Makefile
3802 # all:
3803 # echo Hello
3804 # % cat obj/Makefile
3805 # all:
3806 # echo World
3807 # % make # GNU make
3808 # echo Hello
3809 # Hello
3810 # % pmake # BSD make
3811 # echo World
3812 # World
3813 msg ('portability', $where,
3814 "naming a subdirectory `obj' causes troubles with BSD make")
3815 if $dir eq 'obj';
3817 # `aux' is probably the most important of the following forbidden name,
3818 # since it's tempting to use it as an AC_CONFIG_AUX_DIR.
3819 msg ('portability', $where,
3820 "name `$dir' is reserved on W32 and DOS platforms")
3821 if grep (/^\Q$dir\E$/i, qw/aux lpt1 lpt2 lpt3 com1 com2 com3 com4 con prn/);
3822 }
3824 # check_directories_in_var ($VARIABLE)
3825 # ------------------------------------
3826 # Recursively check all items in variables $VARIABLE as directories
3827 sub check_directories_in_var ($)
3828 {
3829 my ($var) = @_;
3830 $var->traverse_recursively
3831 (sub
3832 {
3833 my ($var, $val, $cond, $full_cond) = @_;
3834 check_directory ($val, $var->rdef ($cond)->location);
3835 return ();
3836 },
3837 undef,
3838 skip_ac_subst => 1);
3839 }
3841 # &handle_subdirs ()
3842 # ------------------
3843 # Handle subdirectories.
3844 sub handle_subdirs ()
3845 {
3846 my $subdirs = var ('SUBDIRS');
3847 return
3848 unless $subdirs;
3850 check_directories_in_var $subdirs;
3852 my $dsubdirs = var ('DIST_SUBDIRS');
3853 check_directories_in_var $dsubdirs
3854 if $dsubdirs;
3856 $output_rules .= &file_contents ('subdirs', new Automake::Location);
3857 rvar ('RECURSIVE_TARGETS')->rdef (TRUE)->{'pretty'} = VAR_SORTED; # Gross!
3858 }
3861 # ($REGEN, @DEPENDENCIES)
3862 # &scan_aclocal_m4
3863 # ----------------
3864 # If aclocal.m4 creation is automated, return the list of its dependencies.
3865 sub scan_aclocal_m4 ()
3866 {
3867 my $regen_aclocal = 0;
3869 set_seen 'CONFIG_STATUS_DEPENDENCIES';
3870 set_seen 'CONFIGURE_DEPENDENCIES';
3872 if (-f 'aclocal.m4')
3873 {
3874 &define_variable ("ACLOCAL_M4", '$(top_srcdir)/aclocal.m4', INTERNAL);
3876 my $aclocal = new Automake::XFile "< aclocal.m4";
3877 my $line = $aclocal->getline;
3878 $regen_aclocal = $line =~ 'generated automatically by aclocal';
3879 }
3881 my @ac_deps = ();
3883 if (set_seen ('ACLOCAL_M4_SOURCES'))
3884 {
3885 push (@ac_deps, '$(ACLOCAL_M4_SOURCES)');
3886 msg_var ('obsolete', 'ACLOCAL_M4_SOURCES',
3887 "`ACLOCAL_M4_SOURCES' is obsolete.\n"
3888 . "It should be safe to simply remove it.");
3889 }
3891 # Note that it might be possible that aclocal.m4 doesn't exist but
3892 # should be auto-generated. This case probably isn't very
3893 # important.
3895 return ($regen_aclocal, @ac_deps);
3896 }
3899 # Helper function for substitute_ac_subst_variables.
3900 sub substitute_ac_subst_variables_worker($)
3901 {
3902 my ($token) = @_;
3903 return "\@$token\@" if var $token;
3904 return "\${$token\}";
3905 }
3907 # substitute_ac_subst_variables ($TEXT)
3908 # -------------------------------------
3909 # Replace any occurrence of ${FOO} in $TEXT by @FOO@ if FOO is an AC_SUBST
3910 # variable.
3911 sub substitute_ac_subst_variables ($)
3912 {
3913 my ($text) = @_;
3914 $text =~ s/\${([^ \t=:+{}]+)}/&substitute_ac_subst_variables_worker ($1)/ge;
3915 return $text;
3916 }
3918 # @DEPENDENCIES
3919 # &prepend_srcdir (@INPUTS)
3920 # -------------------------
3921 # Prepend $(srcdir) or $(top_srcdir) to all @INPUTS. The idea is that
3922 # if an input file has a directory part the same as the current
3923 # directory, then the directory part is simply replaced by $(srcdir).
3924 # But if the directory part is different, then $(top_srcdir) is
3925 # prepended.
3926 sub prepend_srcdir (@)
3927 {
3928 my (@inputs) = @_;
3929 my @newinputs;
3931 foreach my $single (@inputs)
3932 {
3933 if (dirname ($single) eq $relative_dir)
3934 {
3935 push (@newinputs, '$(srcdir)/' . basename ($single));
3936 }
3937 else
3938 {
3939 push (@newinputs, '$(top_srcdir)/' . $single);
3940 }
3941 }
3942 return @newinputs;
3943 }
3945 # @DEPENDENCIES
3946 # rewrite_inputs_into_dependencies ($OUTPUT, @INPUTS)
3947 # ---------------------------------------------------
3948 # Compute a list of dependencies appropriate for the rebuild
3949 # rule of
3950 # AC_CONFIG_FILES($OUTPUT:$INPUT[0]:$INPUTS[1]:...)
3951 # Also distribute $INPUTs which are not built by another AC_CONFIG_FOOS.
3952 sub rewrite_inputs_into_dependencies ($@)
3953 {
3954 my ($file, @inputs) = @_;
3955 my @res = ();
3957 for my $i (@inputs)
3958 {
3959 # We cannot create dependencies on shell variables.
3960 next if (substitute_ac_subst_variables $i) =~ /\$/;
3962 if (exists $ac_config_files_location{$i} && $i ne $file)
3963 {
3964 my $di = dirname $i;
3965 if ($di eq $relative_dir)
3966 {
3967 $i = basename $i;
3968 }
3969 # In the top-level Makefile we do not use $(top_builddir), because
3970 # we are already there, and since the targets are built without
3971 # a $(top_builddir), it helps BSD Make to match them with
3972 # dependencies.
3973 elsif ($relative_dir ne '.')
3974 {
3975 $i = '$(top_builddir)/' . $i;
3976 }
3977 }
3978 else
3979 {
3980 msg ('error', $ac_config_files_location{$file},
3981 "required file `$i' not found")
3982 unless $i =~ /\$/ || exists $output_files{$i} || -f $i;
3983 ($i) = prepend_srcdir ($i);
3984 push_dist_common ($i);
3985 }
3986 push @res, $i;
3987 }
3988 return @res;
3989 }
3993 # &handle_configure ($MAKEFILE_AM, $MAKEFILE_IN, $MAKEFILE, @INPUTS)
3994 # ------------------------------------------------------------------
3995 # Handle remaking and configure stuff.
3996 # We need the name of the input file, to do proper remaking rules.
3997 sub handle_configure ($$$@)
3998 {
3999 my ($makefile_am, $makefile_in, $makefile, @inputs) = @_;
4001 prog_error 'empty @inputs'
4002 unless @inputs;
4004 my ($rel_makefile_am, $rel_makefile_in) = prepend_srcdir ($makefile_am,
4005 $makefile_in);
4006 my $rel_makefile = basename $makefile;
4008 my $colon_infile = ':' . join (':', @inputs);
4009 $colon_infile = '' if $colon_infile eq ":$makefile.in";
4010 my @rewritten = rewrite_inputs_into_dependencies ($makefile, @inputs);
4011 my ($regen_aclocal_m4, @aclocal_m4_deps) = scan_aclocal_m4;
4012 define_pretty_variable ('am__aclocal_m4_deps', TRUE, INTERNAL,
4013 @configure_deps, @aclocal_m4_deps,
4014 '$(top_srcdir)/' . $configure_ac);
4015 my @configuredeps = ('$(am__aclocal_m4_deps)', '$(CONFIGURE_DEPENDENCIES)');
4016 push @configuredeps, '$(ACLOCAL_M4)' if -f 'aclocal.m4';
4017 define_pretty_variable ('am__configure_deps', TRUE, INTERNAL,
4018 @configuredeps);
4020 $output_rules .= file_contents
4021 ('configure',
4022 new Automake::Location,
4023 MAKEFILE => $rel_makefile,
4024 'MAKEFILE-DEPS' => "@rewritten",
4025 'CONFIG-MAKEFILE' => ($relative_dir eq '.') ? '$@' : '$(subdir)/$@',
4026 'MAKEFILE-IN' => $rel_makefile_in,
4027 'MAKEFILE-IN-DEPS' => "@include_stack",
4028 'MAKEFILE-AM' => $rel_makefile_am,
4029 STRICTNESS => global_option 'cygnus'
4030 ? 'cygnus' : $strictness_name,
4031 'USE-DEPS' => global_option 'no-dependencies'
4032 ? ' --ignore-deps' : '',
4033 'MAKEFILE-AM-SOURCES' => "$makefile$colon_infile",
4034 'REGEN-ACLOCAL-M4' => $regen_aclocal_m4);
4036 if ($relative_dir eq '.')
4037 {
4038 &push_dist_common ('acconfig.h')
4039 if -f 'acconfig.h';
4040 }
4042 # If we have a configure header, require it.
4043 my $hdr_index = 0;
4044 my @distclean_config;
4045 foreach my $spec (@config_headers)
4046 {
4047 $hdr_index += 1;
4048 # $CONFIG_H_PATH: config.h from top level.
4049 my ($config_h_path, @ins) = split_config_file_spec ($spec);
4050 my $config_h_dir = dirname ($config_h_path);
4052 # If the header is in the current directory we want to build
4053 # the header here. Otherwise, if we're at the topmost
4054 # directory and the header's directory doesn't have a
4055 # Makefile, then we also want to build the header.
4056 if ($relative_dir eq $config_h_dir
4057 || ($relative_dir eq '.' && ! &is_make_dir ($config_h_dir)))
4058 {
4059 my ($cn_sans_dir, $stamp_dir);
4060 if ($relative_dir eq $config_h_dir)
4061 {
4062 $cn_sans_dir = basename ($config_h_path);
4063 $stamp_dir = '';
4064 }
4065 else
4066 {
4067 $cn_sans_dir = $config_h_path;
4068 if ($config_h_dir eq '.')
4069 {
4070 $stamp_dir = '';
4071 }
4072 else
4073 {
4074 $stamp_dir = $config_h_dir . '/';
4075 }
4076 }
4078 # This will also distribute all inputs.
4079 @ins = rewrite_inputs_into_dependencies ($config_h_path, @ins);
4081 # Cannot define rebuild rules for filenames with shell variables.
4082 next if (substitute_ac_subst_variables $config_h_path) =~ /\$/;
4084 # Header defined in this directory.
4085 my @files;
4086 if (-f $config_h_path . '.top')
4087 {
4088 push (@files, "$cn_sans_dir.top");
4089 }
4090 if (-f $config_h_path . '.bot')
4091 {
4092 push (@files, "$cn_sans_dir.bot");
4093 }
4095 push_dist_common (@files);
4097 # For now, acconfig.h can only appear in the top srcdir.
4098 if (-f 'acconfig.h')
4099 {
4100 push (@files, '$(top_srcdir)/acconfig.h');
4101 }
4103 my $stamp = "${stamp_dir}stamp-h${hdr_index}";
4104 $output_rules .=
4105 file_contents ('remake-hdr',
4106 new Automake::Location,
4107 FILES => "@files",
4108 CONFIG_H => $cn_sans_dir,
4109 CONFIG_HIN => $ins[0],
4110 CONFIG_H_DEPS => "@ins",
4111 CONFIG_H_PATH => $config_h_path,
4112 STAMP => "$stamp");
4114 push @distclean_config, $cn_sans_dir, $stamp;
4115 }
4116 }
4118 $output_rules .= file_contents ('clean-hdr',
4119 new Automake::Location,
4120 FILES => "@distclean_config")
4121 if @distclean_config;
4123 # Distribute and define mkinstalldirs only if it is already present
4124 # in the package, for backward compatibility (some people may still
4125 # use $(mkinstalldirs)).
4126 my $mkidpath = "$config_aux_dir/mkinstalldirs";
4127 if (-f $mkidpath)
4128 {
4129 # Use require_file so that any existing script gets updated
4130 # by --force-missing.
4131 require_conf_file ($mkidpath, FOREIGN, 'mkinstalldirs');
4132 define_variable ('mkinstalldirs',
4133 "\$(SHELL) $am_config_aux_dir/mkinstalldirs", INTERNAL);
4134 }
4135 else
4136 {
4137 # Use $(install_sh), not $(MKDIR_P) because the latter requires
4138 # at least one argument, and $(mkinstalldirs) used to work
4139 # even without arguments (e.g. $(mkinstalldirs) $(conditional_dir)).
4140 define_variable ('mkinstalldirs', '$(install_sh) -d', INTERNAL);
4141 }
4143 reject_var ('CONFIG_HEADER',
4144 "`CONFIG_HEADER' is an anachronism; now determined "
4145 . "automatically\nfrom `$configure_ac'");
4147 my @config_h;
4148 foreach my $spec (@config_headers)
4149 {
4150 my ($out, @ins) = split_config_file_spec ($spec);
4151 # Generate CONFIG_HEADER define.
4152 if ($relative_dir eq dirname ($out))
4153 {
4154 push @config_h, basename ($out);
4155 }
4156 else
4157 {
4158 push @config_h, "\$(top_builddir)/$out";
4159 }
4160 }
4161 define_variable ("CONFIG_HEADER", "@config_h", INTERNAL)
4162 if @config_h;
4164 # Now look for other files in this directory which must be remade
4165 # by config.status, and generate rules for them.
4166 my @actual_other_files = ();
4167 # These get cleaned only in a VPATH build.
4168 my @actual_other_vpath_files = ();
4169 foreach my $lfile (@other_input_files)
4170 {
4171 my $file;
4172 my @inputs;
4173 if ($lfile =~ /^([^:]*):(.*)$/)
4174 {
4175 # This is the ":" syntax of AC_OUTPUT.
4176 $file = $1;
4177 @inputs = split (':', $2);
4178 }
4179 else
4180 {
4181 # Normal usage.
4182 $file = $lfile;
4183 @inputs = $file . '.in';
4184 }
4186 # Automake files should not be stored in here, but in %MAKE_LIST.
4187 prog_error ("$lfile in \@other_input_files\n"
4188 . "\@other_input_files = (@other_input_files)")
4189 if -f $file . '.am';
4191 my $local = basename ($file);
4193 # We skip files that aren't in this directory. However, if
4194 # the file's directory does not have a Makefile, and we are
4195 # currently doing `.', then we create a rule to rebuild the
4196 # file in the subdir.
4197 my $fd = dirname ($file);
4198 if ($fd ne $relative_dir)
4199 {
4200 if ($relative_dir eq '.' && ! &is_make_dir ($fd))
4201 {
4202 $local = $file;
4203 }
4204 else
4205 {
4206 next;
4207 }
4208 }
4210 my @rewritten_inputs = rewrite_inputs_into_dependencies ($file, @inputs);
4212 # Cannot output rules for shell variables.
4213 next if (substitute_ac_subst_variables $local) =~ /\$/;
4215 my $condstr = '';
4216 my $cond = $ac_config_files_condition{$lfile};
4217 if (defined $cond)
4218 {
4219 $condstr = $cond->subst_string;
4220 Automake::Rule::define ($local, $configure_ac, RULE_AUTOMAKE, $cond,
4221 $ac_config_files_location{$file});
4222 }
4223 $output_rules .= ($condstr . $local . ': '
4224 . '$(top_builddir)/config.status '
4225 . "@rewritten_inputs\n"
4226 . $condstr . "\t"
4227 . 'cd $(top_builddir) && '
4228 . '$(SHELL) ./config.status '
4229 . ($relative_dir eq '.' ? '' : '$(subdir)/')
4230 . '$@'
4231 . "\n");
4232 push (@actual_other_files, $local);
4233 }
4235 # For links we should clean destinations and distribute sources.
4236 foreach my $spec (@config_links)
4237 {
4238 my ($link, $file) = split /:/, $spec;
4239 # Some people do AC_CONFIG_LINKS($computed). We only handle
4240 # the DEST:SRC form.
4241 next unless $file;
4242 my $where = $ac_config_files_location{$link};
4244 # Skip destinations that contain shell variables.
4245 if ((substitute_ac_subst_variables $link) !~ /\$/)
4246 {
4247 # We skip links that aren't in this directory. However, if
4248 # the link's directory does not have a Makefile, and we are
4249 # currently doing `.', then we add the link to CONFIG_CLEAN_FILES
4250 # in `.'s Makefile.in.
4251 my $local = basename ($link);
4252 my $fd = dirname ($link);
4253 if ($fd ne $relative_dir)
4254 {
4255 if ($relative_dir eq '.' && ! &is_make_dir ($fd))
4256 {
4257 $local = $link;
4258 }
4259 else
4260 {
4261 $local = undef;
4262 }
4263 }
4264 if ($file ne $link)
4265 {
4266 push @actual_other_files, $local if $local;
4267 }
4268 else
4269 {
4270 push @actual_other_vpath_files, $local if $local;
4271 }
4272 }
4274 # Do not process sources that contain shell variables.
4275 if ((substitute_ac_subst_variables $file) !~ /\$/)
4276 {
4277 my $fd = dirname ($file);
4279 # We distribute files that are in this directory.
4280 # At the top-level (`.') we also distribute files whose
4281 # directory does not have a Makefile.
4282 if (($fd eq $relative_dir)
4283 || ($relative_dir eq '.' && ! &is_make_dir ($fd)))
4284 {
4285 # The following will distribute $file as a side-effect when
4286 # it is appropriate (i.e., when $file is not already an output).
4287 # We do not need the result, just the side-effect.
4288 rewrite_inputs_into_dependencies ($link, $file);
4289 }
4290 }
4291 }
4293 # These files get removed by "make distclean".
4294 define_pretty_variable ('CONFIG_CLEAN_FILES', TRUE, INTERNAL,
4295 @actual_other_files);
4296 define_pretty_variable ('CONFIG_CLEAN_VPATH_FILES', TRUE, INTERNAL,
4297 @actual_other_vpath_files);
4298 }
4300 # Handle C headers.
4301 sub handle_headers
4302 {
4303 my @r = &am_install_var ('-defaultdist', 'header', 'HEADERS', 'include',
4304 'oldinclude', 'pkginclude',
4305 'noinst', 'check');
4306 foreach (@r)
4307 {
4308 next unless $_->[1] =~ /\..*$/;
4309 &saw_extension ($&);
4310 }
4311 }
4313 sub handle_gettext
4314 {
4315 return if ! $seen_gettext || $relative_dir ne '.';
4317 my $subdirs = var 'SUBDIRS';
4319 if (! $subdirs)
4320 {
4321 err_ac "AM_GNU_GETTEXT used but SUBDIRS not defined";
4322 return;
4323 }
4325 # Perform some sanity checks to help users get the right setup.
4326 # We disable these tests when po/ doesn't exist in order not to disallow
4327 # unusual gettext setups.
4328 #
4329 # Bruno Haible:
4330 # | The idea is:
4331 # |
4332 # | 1) If a package doesn't have a directory po/ at top level, it
4333 # | will likely have multiple po/ directories in subpackages.
4334 # |
4335 # | 2) It is useful to warn for the absence of intl/ if AM_GNU_GETTEXT
4336 # | is used without 'external'. It is also useful to warn for the
4337 # | presence of intl/ if AM_GNU_GETTEXT([external]) is used. Both
4338 # | warnings apply only to the usual layout of packages, therefore
4339 # | they should both be disabled if no po/ directory is found at
4340 # | top level.
4342 if (-d 'po')
4343 {
4344 my @subdirs = $subdirs->value_as_list_recursive;
4346 msg_var ('syntax', $subdirs,
4347 "AM_GNU_GETTEXT used but `po' not in SUBDIRS")
4348 if ! grep ($_ eq 'po', @subdirs);
4350 # intl/ is not required when AM_GNU_GETTEXT is called with the
4351 # `external' option and AM_GNU_GETTEXT_INTL_SUBDIR is not called.
4352 msg_var ('syntax', $subdirs,
4353 "AM_GNU_GETTEXT used but `intl' not in SUBDIRS")
4354 if (! ($seen_gettext_external && ! $seen_gettext_intl)
4355 && ! grep ($_ eq 'intl', @subdirs));
4357 # intl/ should not be used with AM_GNU_GETTEXT([external]), except
4358 # if AM_GNU_GETTEXT_INTL_SUBDIR is called.
4359 msg_var ('syntax', $subdirs,
4360 "`intl' should not be in SUBDIRS when "
4361 . "AM_GNU_GETTEXT([external]) is used")
4362 if ($seen_gettext_external && ! $seen_gettext_intl
4363 && grep ($_ eq 'intl', @subdirs));
4364 }
4366 require_file ($ac_gettext_location, GNU, 'ABOUT-NLS');
4367 }
4369 # Handle footer elements.
4370 sub handle_footer
4371 {
4372 reject_rule ('.SUFFIXES',
4373 "use variable `SUFFIXES', not target `.SUFFIXES'");
4375 # Note: AIX 4.1 /bin/make will fail if any suffix rule appears
4376 # before .SUFFIXES. So we make sure that .SUFFIXES appears before
4377 # anything else, by sticking it right after the default: target.
4378 $output_header .= ".SUFFIXES:\n";
4379 my $suffixes = var 'SUFFIXES';
4380 my @suffixes = Automake::Rule::suffixes;
4381 if (@suffixes || $suffixes)
4382 {
4383 # Make sure SUFFIXES has unique elements. Sort them to ensure
4384 # the output remains consistent. However, $(SUFFIXES) is
4385 # always at the start of the list, unsorted. This is done
4386 # because make will choose rules depending on the ordering of
4387 # suffixes, and this lets the user have some control. Push
4388 # actual suffixes, and not $(SUFFIXES). Some versions of make
4389 # do not like variable substitutions on the .SUFFIXES line.
4390 my @user_suffixes = ($suffixes
4391 ? $suffixes->value_as_list_recursive : ());
4393 my %suffixes = map { $_ => 1 } @suffixes;
4394 delete @suffixes{@user_suffixes};
4396 $output_header .= (".SUFFIXES: "
4397 . join (' ', @user_suffixes, sort keys %suffixes)
4398 . "\n");
4399 }
4401 $output_trailer .= file_contents ('footer', new Automake::Location);
4402 }
4405 # Generate `make install' rules.
4406 sub handle_install ()
4407 {
4408 $output_rules .= &file_contents
4409 ('install',
4410 new Automake::Location,
4411 maybe_BUILT_SOURCES => (set_seen ('BUILT_SOURCES')
4412 ? (" \$(BUILT_SOURCES)\n"
4413 . "\t\$(MAKE) \$(AM_MAKEFLAGS)")
4414 : ''),
4415 'installdirs-local' => (user_phony_rule 'installdirs-local'
4416 ? ' installdirs-local' : ''),
4417 am__installdirs => variable_value ('am__installdirs') || '');
4418 }
4421 # Deal with all and all-am.
4422 sub handle_all ($)
4423 {
4424 my ($makefile) = @_;
4426 # Output `all-am'.
4428 # Put this at the beginning for the sake of non-GNU makes. This
4429 # is still wrong if these makes can run parallel jobs. But it is
4430 # right enough.
4431 unshift (@all, basename ($makefile));
4433 foreach my $spec (@config_headers)
4434 {
4435 my ($out, @ins) = split_config_file_spec ($spec);
4436 push (@all, basename ($out))
4437 if dirname ($out) eq $relative_dir;
4438 }
4440 # Install `all' hooks.
4441 push (@all, "all-local")
4442 if user_phony_rule "all-local";
4444 &pretty_print_rule ("all-am:", "\t\t", @all);
4445 &depend ('.PHONY', 'all-am', 'all');
4448 # Output `all'.
4450 my @local_headers = ();
4451 push @local_headers, '$(BUILT_SOURCES)'
4452 if var ('BUILT_SOURCES');
4453 foreach my $spec (@config_headers)
4454 {
4455 my ($out, @ins) = split_config_file_spec ($spec);
4456 push @local_headers, basename ($out)
4457 if dirname ($out) eq $relative_dir;
4458 }
4460 if (@local_headers)
4461 {
4462 # We need to make sure config.h is built before we recurse.
4463 # We also want to make sure that built sources are built
4464 # before any ordinary `all' targets are run. We can't do this
4465 # by changing the order of dependencies to the "all" because
4466 # that breaks when using parallel makes. Instead we handle
4467 # things explicitly.
4468 $output_all .= ("all: @local_headers"
4469 . "\n\t"
4470 . '$(MAKE) $(AM_MAKEFLAGS) '
4471 . (var ('SUBDIRS') ? 'all-recursive' : 'all-am')
4472 . "\n\n");
4473 }
4474 else
4475 {
4476 $output_all .= "all: " . (var ('SUBDIRS')
4477 ? 'all-recursive' : 'all-am') . "\n\n";
4478 }
4479 }
4482 # &do_check_merge_target ()
4483 # -------------------------
4484 # Handle check merge target specially.
4485 sub do_check_merge_target ()
4486 {
4487 # Include user-defined local form of target.
4488 push @check_tests, 'check-local'
4489 if user_phony_rule 'check-local';
4491 # In --cygnus mode, check doesn't depend on all.
4492 if (option 'cygnus')
4493 {
4494 # Just run the local check rules.
4495 pretty_print_rule ('check-am:', "\t\t", @check);
4496 }
4497 else
4498 {
4499 # The check target must depend on the local equivalent of
4500 # `all', to ensure all the primary targets are built. Then it
4501 # must build the local check rules.
4502 $output_rules .= "check-am: all-am\n";
4503 pretty_print_rule ("\t\$(MAKE) \$(AM_MAKEFLAGS)", "\t ",
4504 @check)
4505 if @check;
4506 }
4507 pretty_print_rule ("\t\$(MAKE) \$(AM_MAKEFLAGS)", "\t ",
4508 @check_tests)
4509 if @check_tests;
4511 depend '.PHONY', 'check', 'check-am';
4512 # Handle recursion. We have to honor BUILT_SOURCES like for `all:'.
4513 $output_rules .= ("check: "
4514 . (var ('BUILT_SOURCES')
4515 ? "\$(BUILT_SOURCES)\n\t\$(MAKE) \$(AM_MAKEFLAGS) "
4516 : '')
4517 . (var ('SUBDIRS') ? 'check-recursive' : 'check-am')
4518 . "\n");
4519 }
4521 # handle_clean ($MAKEFILE)
4522 # ------------------------
4523 # Handle all 'clean' targets.
4524 sub handle_clean ($)
4525 {
4526 my ($makefile) = @_;
4528 # Clean the files listed in user variables if they exist.
4529 $clean_files{'$(MOSTLYCLEANFILES)'} = MOSTLY_CLEAN
4530 if var ('MOSTLYCLEANFILES');
4531 $clean_files{'$(CLEANFILES)'} = CLEAN
4532 if var ('CLEANFILES');
4533 $clean_files{'$(DISTCLEANFILES)'} = DIST_CLEAN
4534 if var ('DISTCLEANFILES');
4535 $clean_files{'$(MAINTAINERCLEANFILES)'} = MAINTAINER_CLEAN
4536 if var ('MAINTAINERCLEANFILES');
4538 # Built sources are automatically removed by maintainer-clean.
4539 $clean_files{'$(BUILT_SOURCES)'} = MAINTAINER_CLEAN
4540 if var ('BUILT_SOURCES');
4542 # Compute a list of "rm"s to run for each target.
4543 my %rms = (MOSTLY_CLEAN, [],
4544 CLEAN, [],
4545 DIST_CLEAN, [],
4546 MAINTAINER_CLEAN, []);
4548 foreach my $file (keys %clean_files)
4549 {
4550 my $when = $clean_files{$file};
4551 prog_error 'invalid entry in %clean_files'
4552 unless exists $rms{$when};
4554 my $rm = "rm -f $file";
4555 # If file is a variable, make sure when don't call `rm -f' without args.
4556 $rm ="test -z \"$file\" || $rm"
4557 if ($file =~ /^\s*\$(\(.*\)|\{.*\})\s*$/);
4559 push @{$rms{$when}}, "\t-$rm\n";
4560 }
4562 $output_rules .= &file_contents
4563 ('clean',
4564 new Automake::Location,
4565 MOSTLYCLEAN_RMS => join ('', sort @{$rms{&MOSTLY_CLEAN}}),
4566 CLEAN_RMS => join ('', sort @{$rms{&CLEAN}}),
4567 DISTCLEAN_RMS => join ('', sort @{$rms{&DIST_CLEAN}}),
4568 MAINTAINER_CLEAN_RMS => join ('', sort @{$rms{&MAINTAINER_CLEAN}}),
4569 MAKEFILE => basename $makefile,
4570 );
4571 }
4574 # &target_cmp ($A, $B)
4575 # --------------------
4576 # Subroutine for &handle_factored_dependencies to let `.PHONY' and
4577 # other `.TARGETS' be last.
4578 sub target_cmp
4579 {
4580 return 0 if $a eq $b;
4582 my $a1 = substr ($a, 0, 1);
4583 my $b1 = substr ($b, 0, 1);
4584 if ($a1 ne $b1)
4585 {
4586 return -1 if $b1 eq '.';
4587 return 1 if $a1 eq '.';
4588 }
4589 return $a cmp $b;
4590 }
4593 # &handle_factored_dependencies ()
4594 # --------------------------------
4595 # Handle everything related to gathered targets.
4596 sub handle_factored_dependencies
4597 {
4598 # Reject bad hooks.
4599 foreach my $utarg ('uninstall-data-local', 'uninstall-data-hook',
4600 'uninstall-exec-local', 'uninstall-exec-hook',
4601 'uninstall-dvi-local',
4602 'uninstall-html-local',
4603 'uninstall-info-local',
4604 'uninstall-pdf-local',
4605 'uninstall-ps-local')
4606 {
4607 my $x = $utarg;
4608 $x =~ s/-.*-/-/;
4609 reject_rule ($utarg, "use `$x', not `$utarg'");
4610 }
4612 reject_rule ('install-local',
4613 "use `install-data-local' or `install-exec-local', "
4614 . "not `install-local'");
4616 reject_rule ('install-hook',
4617 "use `install-data-hook' or `install-exec-hook', "
4618 . "not `install-hook'");
4620 # Install the -local hooks.
4621 foreach (keys %dependencies)
4622 {
4623 # Hooks are installed on the -am targets.
4624 s/-am$// or next;
4625 depend ("$_-am", "$_-local")
4626 if user_phony_rule "$_-local";
4627 }
4629 # Install the -hook hooks.
4630 # FIXME: Why not be as liberal as we are with -local hooks?
4631 foreach ('install-exec', 'install-data', 'uninstall')
4632 {
4633 if (user_phony_rule "$_-hook")
4634 {
4635 depend ('.MAKE', "$_-am");
4636 register_action("$_-am",
4637 ("\t\@\$(NORMAL_INSTALL)\n"
4638 . "\t\$(MAKE) \$(AM_MAKEFLAGS) $_-hook"));
4639 }
4640 }
4642 # All the required targets are phony.
4643 depend ('.PHONY', keys %required_targets);
4645 # Actually output gathered targets.
4646 foreach (sort target_cmp keys %dependencies)
4647 {
4648 # If there is nothing about this guy, skip it.
4649 next
4650 unless (@{$dependencies{$_}}
4651 || $actions{$_}
4652 || $required_targets{$_});
4654 # Define gathered targets in undefined conditions.
4655 # FIXME: Right now we must handle .PHONY as an exception,
4656 # because people write things like
4657 # .PHONY: myphonytarget
4658 # to append dependencies. This would not work if Automake
4659 # refrained from defining its own .PHONY target as it does
4660 # with other overridden targets.
4661 # Likewise for `.MAKE'.
4662 my @undefined_conds = (TRUE,);
4663 if ($_ ne '.PHONY' && $_ ne '.MAKE')
4664 {
4665 @undefined_conds =
4666 Automake::Rule::define ($_, 'internal',
4667 RULE_AUTOMAKE, TRUE, INTERNAL);
4668 }
4669 my @uniq_deps = uniq (sort @{$dependencies{$_}});
4670 foreach my $cond (@undefined_conds)
4671 {
4672 my $condstr = $cond->subst_string;
4673 &pretty_print_rule ("$condstr$_:", "$condstr\t", @uniq_deps);
4674 $output_rules .= $actions{$_} if defined $actions{$_};
4675 $output_rules .= "\n";
4676 }
4677 }
4678 }
4681 # &handle_tests_dejagnu ()
4682 # ------------------------
4683 sub handle_tests_dejagnu
4684 {
4685 push (@check_tests, 'check-DEJAGNU');
4686 $output_rules .= file_contents ('dejagnu', new Automake::Location);
4687 }
4690 # Handle TESTS variable and other checks.
4691 sub handle_tests
4692 {
4693 if (option 'dejagnu')
4694 {
4695 &handle_tests_dejagnu;
4696 }
4697 else
4698 {
4699 foreach my $c ('DEJATOOL', 'RUNTEST', 'RUNTESTFLAGS')
4700 {
4701 reject_var ($c, "`$c' defined but `dejagnu' not in "
4702 . "`AUTOMAKE_OPTIONS'");
4703 }
4704 }
4706 if (var ('TESTS'))
4707 {
4708 push (@check_tests, 'check-TESTS');
4709 $output_rules .= &file_contents ('check', new Automake::Location,
4710 COLOR => !! option 'color-tests');
4712 # Tests that are known programs should have $(EXEEXT) appended.
4713 # For matching purposes, we need to adjust XFAIL_TESTS as well.
4714 append_exeext { exists $known_programs{$_[0]} } 'TESTS';
4715 append_exeext { exists $known_programs{$_[0]} } 'XFAIL_TESTS'
4716 if (var ('XFAIL_TESTS'));
4717 }
4718 }
4720 # Handle Emacs Lisp.
4721 sub handle_emacs_lisp
4722 {
4723 my @elfiles = &am_install_var ('-candist', 'lisp', 'LISP',
4724 'lisp', 'noinst');
4726 return if ! @elfiles;
4728 define_pretty_variable ('am__ELFILES', TRUE, INTERNAL,
4729 map { $_->[1] } @elfiles);
4730 define_pretty_variable ('am__ELCFILES', TRUE, INTERNAL,
4731 '$(am__ELFILES:.el=.elc)');
4732 # This one can be overridden by users.
4733 define_pretty_variable ('ELCFILES', TRUE, INTERNAL, '$(LISP:.el=.elc)');
4735 push @all, '$(ELCFILES)';
4737 require_variables ($elfiles[0][0], "Emacs Lisp sources seen", TRUE,
4738 'EMACS', 'lispdir');
4739 require_conf_file ($elfiles[0][0], FOREIGN, 'elisp-comp');
4740 &define_variable ('elisp_comp', "$am_config_aux_dir/elisp-comp", INTERNAL);
4741 }
4743 # Handle Python
4744 sub handle_python
4745 {
4746 my @pyfiles = &am_install_var ('-defaultdist', 'python', 'PYTHON',
4747 'noinst');
4748 return if ! @pyfiles;
4750 require_variables ($pyfiles[0][0], "Python sources seen", TRUE, 'PYTHON');
4751 require_conf_file ($pyfiles[0][0], FOREIGN, 'py-compile');
4752 &define_variable ('py_compile', "$am_config_aux_dir/py-compile", INTERNAL);
4753 }
4755 # Handle Java.
4756 sub handle_java
4757 {
4758 my @sourcelist = &am_install_var ('-candist',
4759 'java', 'JAVA',
4760 'java', 'noinst', 'check');
4761 return if ! @sourcelist;
4763 my @prefix = am_primary_prefixes ('JAVA', 1,
4764 'java', 'noinst', 'check');
4766 my $dir;
4767 foreach my $curs (@prefix)
4768 {
4769 next
4770 if $curs eq 'EXTRA';
4772 err_var "${curs}_JAVA", "multiple _JAVA primaries in use"
4773 if defined $dir;
4774 $dir = $curs;
4775 }
4778 push (@all, 'class' . $dir . '.stamp');
4779 }
4782 # Handle some of the minor options.
4783 sub handle_minor_options
4784 {
4785 if (option 'readme-alpha')
4786 {
4787 if ($relative_dir eq '.')
4788 {
4789 if ($package_version !~ /^$GNITS_VERSION_PATTERN$/)
4790 {
4791 msg ('error-gnits', $package_version_location,
4792 "version `$package_version' doesn't follow " .
4793 "Gnits standards");
4794 }
4795 if (defined $1 && -f 'README-alpha')
4796 {
4797 # This means we have an alpha release. See
4798 # GNITS_VERSION_PATTERN for details.
4799 push_dist_common ('README-alpha');
4800 }
4801 }
4802 }
4803 }
4805 ################################################################
4807 # ($OUTPUT, @INPUTS)
4808 # &split_config_file_spec ($SPEC)
4809 # -------------------------------
4810 # Decode the Autoconf syntax for config files (files, headers, links
4811 # etc.).
4812 sub split_config_file_spec ($)
4813 {
4814 my ($spec) = @_;
4815 my ($output, @inputs) = split (/:/, $spec);
4817 push @inputs, "$output.in"
4818 unless @inputs;
4820 return ($output, @inputs);
4821 }
4823 # $input
4824 # locate_am (@POSSIBLE_SOURCES)
4825 # -----------------------------
4826 # AC_CONFIG_FILES allow specifications such as Makefile:top.in:mid.in:bot.in
4827 # This functions returns the first *.in file for which a *.am exists.
4828 # It returns undef otherwise.
4829 sub locate_am (@)
4830 {
4831 my (@rest) = @_;
4832 my $input;
4833 foreach my $file (@rest)
4834 {
4835 if (($file =~ /^(.*)\.in$/) && -f "$1.am")
4836 {
4837 $input = $file;
4838 last;
4839 }
4840 }
4841 return $input;
4842 }
4844 my %make_list;
4846 # &scan_autoconf_config_files ($WHERE, $CONFIG-FILES)
4847 # ---------------------------------------------------
4848 # Study $CONFIG-FILES which is the first argument to AC_CONFIG_FILES
4849 # (or AC_OUTPUT).
4850 sub scan_autoconf_config_files ($$)
4851 {
4852 my ($where, $config_files) = @_;
4854 # Look at potential Makefile.am's.
4855 foreach (split ' ', $config_files)
4856 {
4857 # Must skip empty string for Perl 4.
4858 next if $_ eq "\\" || $_ eq '';
4860 # Handle $local:$input syntax.
4861 my ($local, @rest) = split (/:/);
4862 @rest = ("$local.in",) unless @rest;
4863 msg ('portability', $where,
4864 "Omit leading `./' from config file names such as `$local',"
4865 . "\nas not all make implementations treat `file' and `./file' equally.")
4866 if ($local =~ /^\.\//);
4867 my $input = locate_am @rest;
4868 if ($input)
4869 {
4870 # We have a file that automake should generate.
4871 $make_list{$input} = join (':', ($local, @rest));
4872 }
4873 else
4874 {
4875 # We have a file that automake should cause to be
4876 # rebuilt, but shouldn't generate itself.
4877 push (@other_input_files, $_);
4878 }
4879 $ac_config_files_location{$local} = $where;
4880 $ac_config_files_condition{$local} =
4881 new Automake::Condition (@cond_stack)
4882 if (@cond_stack);
4883 }
4884 }
4887 # &scan_autoconf_traces ($FILENAME)
4888 # ---------------------------------
4889 sub scan_autoconf_traces ($)
4890 {
4891 my ($filename) = @_;
4893 # Macros to trace, with their minimal number of arguments.
4894 #
4895 # IMPORTANT: If you add a macro here, you should also add this macro
4896 # ========= to Automake-preselection in autoconf/lib/autom4te.in.
4897 my %traced = (
4898 AC_CANONICAL_BUILD => 0,
4899 AC_CANONICAL_HOST => 0,
4900 AC_CANONICAL_TARGET => 0,
4901 AC_CONFIG_AUX_DIR => 1,
4902 AC_CONFIG_FILES => 1,
4903 AC_CONFIG_HEADERS => 1,
4904 AC_CONFIG_LIBOBJ_DIR => 1,
4905 AC_CONFIG_LINKS => 1,
4906 AC_FC_SRCEXT => 1,
4907 AC_INIT => 0,
4908 AC_LIBSOURCE => 1,
4909 AC_REQUIRE_AUX_FILE => 1,
4910 AC_SUBST_TRACE => 1,
4911 AM_AUTOMAKE_VERSION => 1,
4912 AM_CONDITIONAL => 2,
4913 AM_ENABLE_MULTILIB => 0,
4914 AM_GNU_GETTEXT => 0,
4915 AM_GNU_GETTEXT_INTL_SUBDIR => 0,
4916 AM_INIT_AUTOMAKE => 0,
4917 AM_MAINTAINER_MODE => 0,
4918 AM_PROG_CC_C_O => 0,
4919 _AM_SUBST_NOTMAKE => 1,
4920 _AM_COND_IF => 1,
4921 _AM_COND_ELSE => 1,
4922 _AM_COND_ENDIF => 1,
4923 LT_SUPPORTED_TAG => 1,
4924 _LT_AC_TAGCONFIG => 0,
4925 m4_include => 1,
4926 m4_sinclude => 1,
4927 sinclude => 1,
4928 );
4930 my $traces = ($ENV{AUTOCONF} || 'autoconf') . " ";
4932 # Use a separator unlikely to be used, not `:', the default, which
4933 # has a precise meaning for AC_CONFIG_FILES and so on.
4934 $traces .= join (' ',
4935 map { "--trace=$_" . ':\$f:\$l::\$d::\$n::\${::}%' }
4936 (keys %traced));
4938 my $tracefh = new Automake::XFile ("$traces $filename |");
4939 verb "reading $traces";
4941 @cond_stack = ();
4942 my $where;
4944 while ($_ = $tracefh->getline)
4945 {
4946 chomp;
4947 my ($here, $depth, @args) = split (/::/);
4948 $where = new Automake::Location $here;
4949 my $macro = $args[0];
4951 prog_error ("unrequested trace `$macro'")
4952 unless exists $traced{$macro};
4954 # Skip and diagnose malformed calls.
4955 if ($#args < $traced{$macro})
4956 {
4957 msg ('syntax', $where, "not enough arguments for $macro");
4958 next;
4959 }
4961 # Alphabetical ordering please.
4962 if ($macro eq 'AC_CANONICAL_BUILD')
4963 {
4964 if ($seen_canonical <= AC_CANONICAL_BUILD)
4965 {
4966 $seen_canonical = AC_CANONICAL_BUILD;
4967 $canonical_location = $where;
4968 }
4969 }
4970 elsif ($macro eq 'AC_CANONICAL_HOST')
4971 {
4972 if ($seen_canonical <= AC_CANONICAL_HOST)
4973 {
4974 $seen_canonical = AC_CANONICAL_HOST;
4975 $canonical_location = $where;
4976 }
4977 }
4978 elsif ($macro eq 'AC_CANONICAL_TARGET')
4979 {
4980 $seen_canonical = AC_CANONICAL_TARGET;
4981 $canonical_location = $where;
4982 }
4983 elsif ($macro eq 'AC_CONFIG_AUX_DIR')
4984 {
4985 if ($seen_init_automake)
4986 {
4987 error ($where, "AC_CONFIG_AUX_DIR must be called before "
4988 . "AM_INIT_AUTOMAKE...", partial => 1);
4989 error ($seen_init_automake, "... AM_INIT_AUTOMAKE called here");
4990 }
4991 $config_aux_dir = $args[1];
4992 $config_aux_dir_set_in_configure_ac = 1;
4993 $relative_dir = '.';
4994 check_directory ($config_aux_dir, $where);
4995 }
4996 elsif ($macro eq 'AC_CONFIG_FILES')
4997 {
4998 # Look at potential Makefile.am's.
4999 scan_autoconf_config_files ($where, $args[1]);
5000 }
5001 elsif ($macro eq 'AC_CONFIG_HEADERS')
5002 {
5003 foreach my $spec (split (' ', $args[1]))
5004 {
5005 my ($dest, @src) = split (':', $spec);
5006 $ac_config_files_location{$dest} = $where;
5007 push @config_headers, $spec;
5008 }
5009 }
5010 elsif ($macro eq 'AC_CONFIG_LIBOBJ_DIR')
5011 {
5012 $config_libobj_dir = $args[1];
5013 $relative_dir = '.';
5014 check_directory ($config_libobj_dir, $where);
5015 }
5016 elsif ($macro eq 'AC_CONFIG_LINKS')
5017 {
5018 foreach my $spec (split (' ', $args[1]))
5019 {
5020 my ($dest, $src) = split (':', $spec);
5021 $ac_config_files_location{$dest} = $where;
5022 push @config_links, $spec;
5023 }
5024 }
5025 elsif ($macro eq 'AC_FC_SRCEXT')
5026 {
5027 my $suffix = $args[1];
5028 # These flags are used as %SOURCEFLAG% in depend2.am,
5029 # where the trailing space is important.
5030 $sourceflags{'.' . $suffix} = '$(FCFLAGS_' . $suffix . ') '
5031 if ($suffix eq 'f90' || $suffix eq 'f95' || $suffix eq 'f03' || $suffix eq 'f08');
5032 }
5033 elsif ($macro eq 'AC_INIT')
5034 {
5035 if (defined $args[2])
5036 {
5037 $package_version = $args[2];
5038 $package_version_location = $where;
5039 }
5040 }
5041 elsif ($macro eq 'AC_LIBSOURCE')
5042 {
5043 $libsources{$args[1]} = $here;
5044 }
5045 elsif ($macro eq 'AC_REQUIRE_AUX_FILE')
5046 {
5047 # Only remember the first time a file is required.
5048 $required_aux_file{$args[1]} = $where
5049 unless exists $required_aux_file{$args[1]};
5050 }
5051 elsif ($macro eq 'AC_SUBST_TRACE')
5052 {
5053 # Just check for alphanumeric in AC_SUBST_TRACE. If you do
5054 # AC_SUBST(5), then too bad.
5055 $configure_vars{$args[1]} = $where
5056 if $args[1] =~ /^\w+$/;
5057 }
5058 elsif ($macro eq 'AM_AUTOMAKE_VERSION')
5059 {
5060 error ($where,
5061 "version mismatch. This is Automake $VERSION,\n" .
5062 "but the definition used by this AM_INIT_AUTOMAKE\n" .
5063 "comes from Automake $args[1]. You should recreate\n" .
5064 "aclocal.m4 with aclocal and run automake again.\n",
5065 # $? = 63 is used to indicate version mismatch to missing.
5066 exit_code => 63)
5067 if $VERSION ne $args[1];
5069 $seen_automake_version = 1;
5070 }
5071 elsif ($macro eq 'AM_CONDITIONAL')
5072 {
5073 $configure_cond{$args[1]} = $where;
5074 }
5075 elsif ($macro eq 'AM_ENABLE_MULTILIB')
5076 {
5077 $seen_multilib = $where;
5078 }
5079 elsif ($macro eq 'AM_GNU_GETTEXT')
5080 {
5081 $seen_gettext = $where;
5082 $ac_gettext_location = $where;
5083 $seen_gettext_external = grep ($_ eq 'external', @args);
5084 }
5085 elsif ($macro eq 'AM_GNU_GETTEXT_INTL_SUBDIR')
5086 {
5087 $seen_gettext_intl = $where;
5088 }
5089 elsif ($macro eq 'AM_INIT_AUTOMAKE')
5090 {
5091 $seen_init_automake = $where;
5092 if (defined $args[2])
5093 {
5094 $package_version = $args[2];
5095 $package_version_location = $where;
5096 }
5097 elsif (defined $args[1])
5098 {
5099 exit $exit_code
5100 if (process_global_option_list ($where,
5101 split (' ', $args[1])));
5102 }
5103 }
5104 elsif ($macro eq 'AM_MAINTAINER_MODE')
5105 {
5106 $seen_maint_mode = $where;
5107 }
5108 elsif ($macro eq 'AM_PROG_CC_C_O')
5109 {
5110 $seen_cc_c_o = $where;
5111 }
5112 elsif ($macro eq '_AM_COND_IF')
5113 {
5114 cond_stack_if ('', $args[1], $where);
5115 error ($where, "missing m4 quoting, macro depth $depth")
5116 if ($depth != 1);
5117 }
5118 elsif ($macro eq '_AM_COND_ELSE')
5119 {
5120 cond_stack_else ('!', $args[1], $where);
5121 error ($where, "missing m4 quoting, macro depth $depth")
5122 if ($depth != 1);
5123 }
5124 elsif ($macro eq '_AM_COND_ENDIF')
5125 {
5126 cond_stack_endif (undef, undef, $where);
5127 error ($where, "missing m4 quoting, macro depth $depth")
5128 if ($depth != 1);
5129 }
5130 elsif ($macro eq '_AM_SUBST_NOTMAKE')
5131 {
5132 $ignored_configure_vars{$args[1]} = $where;
5133 }
5134 elsif ($macro eq 'm4_include'
5135 || $macro eq 'm4_sinclude'
5136 || $macro eq 'sinclude')
5137 {
5138 # Skip missing `sinclude'd files.
5139 next if $macro ne 'm4_include' && ! -f $args[1];
5141 # Some modified versions of Autoconf don't use
5142 # frozen files. Consequently it's possible that we see all
5143 # m4_include's performed during Autoconf's startup.
5144 # Obviously we don't want to distribute Autoconf's files
5145 # so we skip absolute filenames here.
5146 push @configure_deps, '$(top_srcdir)/' . $args[1]
5147 unless $here =~ m,^(?:\w:)?[\\/],;
5148 # Keep track of the greatest timestamp.
5149 if (-e $args[1])
5150 {
5151 my $mtime = mtime $args[1];
5152 $configure_deps_greatest_timestamp = $mtime
5153 if $mtime > $configure_deps_greatest_timestamp;
5154 }
5155 }
5156 elsif ($macro eq 'LT_SUPPORTED_TAG')
5157 {
5158 $libtool_tags{$args[1]} = 1;
5159 $libtool_new_api = 1;
5160 }
5161 elsif ($macro eq '_LT_AC_TAGCONFIG')
5162 {
5163 # _LT_AC_TAGCONFIG is an old macro present in Libtool 1.5.
5164 # We use it to detect whether tags are supported. Our
5165 # preferred interface is LT_SUPPORTED_TAG, but it was
5166 # introduced in Libtool 1.6.
5167 if (0 == keys %libtool_tags)
5168 {
5169 # Hardcode the tags supported by Libtool 1.5.
5170 %libtool_tags = (CC => 1, CXX => 1, GCJ => 1, F77 => 1);
5171 }
5172 }
5173 }
5175 error ($where, "condition stack not properly closed")
5176 if (@cond_stack);
5178 $tracefh->close;
5179 }
5182 # &scan_autoconf_files ()
5183 # -----------------------
5184 # Check whether we use `configure.ac' or `configure.in'.
5185 # Scan it (and possibly `aclocal.m4') for interesting things.
5186 # We must scan aclocal.m4 because there might be AC_SUBSTs and such there.
5187 sub scan_autoconf_files ()
5188 {
5189 # Reinitialize libsources here. This isn't really necessary,
5190 # since we currently assume there is only one configure.ac. But
5191 # that won't always be the case.
5192 %libsources = ();
5194 # Keep track of the youngest configure dependency.
5195 $configure_deps_greatest_timestamp = mtime $configure_ac;
5196 if (-e 'aclocal.m4')
5197 {
5198 my $mtime = mtime 'aclocal.m4';
5199 $configure_deps_greatest_timestamp = $mtime
5200 if $mtime > $configure_deps_greatest_timestamp;
5201 }
5203 scan_autoconf_traces ($configure_ac);
5205 @configure_input_files = sort keys %make_list;
5206 # Set input and output files if not specified by user.
5207 if (! @input_files)
5208 {
5209 @input_files = @configure_input_files;
5210 %output_files = %make_list;
5211 }
5214 if (! $seen_init_automake)
5215 {
5216 err_ac ("no proper invocation of AM_INIT_AUTOMAKE was found.\nYou "
5217 . "should verify that $configure_ac invokes AM_INIT_AUTOMAKE,"
5218 . "\nthat aclocal.m4 is present in the top-level directory,\n"
5219 . "and that aclocal.m4 was recently regenerated "
5220 . "(using aclocal).");
5221 }
5222 else
5223 {
5224 if (! $seen_automake_version)
5225 {
5226 if (-f 'aclocal.m4')
5227 {
5228 error ($seen_init_automake,
5229 "your implementation of AM_INIT_AUTOMAKE comes from " .
5230 "an\nold Automake version. You should recreate " .
5231 "aclocal.m4\nwith aclocal and run automake again.\n",
5232 # $? = 63 is used to indicate version mismatch to missing.
5233 exit_code => 63);
5234 }
5235 else
5236 {
5237 error ($seen_init_automake,
5238 "no proper implementation of AM_INIT_AUTOMAKE was " .
5239 "found,\nprobably because aclocal.m4 is missing...\n" .
5240 "You should run aclocal to create this file, then\n" .
5241 "run automake again.\n");
5242 }
5243 }
5244 }
5246 locate_aux_dir ();
5248 # Reorder @input_files so that the Makefile that distributes aux
5249 # files is processed last. This is important because each directory
5250 # can require auxiliary scripts and we should wait until they have
5251 # been installed before distributing them.
5253 # The Makefile.in that distribute the aux files is the one in
5254 # $config_aux_dir or the top-level Makefile.
5255 my $auxdirdist = is_make_dir ($config_aux_dir) ? $config_aux_dir : '.';
5256 my @new_input_files = ();
5257 while (@input_files)
5258 {
5259 my $in = pop @input_files;
5260 my @ins = split (/:/, $output_files{$in});
5261 if (dirname ($ins[0]) eq $auxdirdist)
5262 {
5263 push @new_input_files, $in;
5264 $automake_will_process_aux_dir = 1;
5265 }
5266 else
5267 {
5268 unshift @new_input_files, $in;
5269 }
5270 }
5271 @input_files = @new_input_files;
5273 # If neither the auxdir/Makefile nor the ./Makefile are generated
5274 # by Automake, we won't distribute the aux files anyway. Assume
5275 # the user know what (s)he does, and pretend we will distribute
5276 # them to disable the error in require_file_internal.
5277 $automake_will_process_aux_dir = 1 if ! is_make_dir ($auxdirdist);
5279 # Look for some files we need. Always check for these. This
5280 # check must be done for every run, even those where we are only
5281 # looking at a subdir Makefile. We must set relative_dir for
5282 # maybe_push_required_file to work.
5283 # Sort the files for stable verbose output.
5284 $relative_dir = '.';
5285 foreach my $file (sort keys %required_aux_file)
5286 {
5287 require_conf_file ($required_aux_file{$file}->get, FOREIGN, $file)
5288 }
5289 err_am "`install.sh' is an anachronism; use `install-sh' instead"
5290 if -f $config_aux_dir . '/install.sh';
5292 # Preserve dist_common for later.
5293 $configure_dist_common = variable_value ('DIST_COMMON') || '';
5295 }
5297 ################################################################
5299 # Set up for Cygnus mode.
5300 sub check_cygnus
5301 {
5302 my $cygnus = option 'cygnus';
5303 return unless $cygnus;
5305 set_strictness ('foreign');
5306 set_option ('no-installinfo', $cygnus);
5307 set_option ('no-dependencies', $cygnus);
5308 set_option ('no-dist', $cygnus);
5310 err_ac "`AM_MAINTAINER_MODE' required when --cygnus specified"
5311 if !$seen_maint_mode;
5312 }
5314 # Do any extra checking for GNU standards.
5315 sub check_gnu_standards
5316 {
5317 if ($relative_dir eq '.')
5318 {
5319 # In top level (or only) directory.
5320 require_file ("$am_file.am", GNU,
5321 qw/INSTALL NEWS README AUTHORS ChangeLog/);
5323 # Accept one of these three licenses; default to COPYING.
5324 # Make sure we do not overwrite an existing license.
5325 my $license;
5326 foreach (qw /COPYING COPYING.LIB COPYING.LESSER/)
5327 {
5328 if (-f $_)
5329 {
5330 $license = $_;
5331 last;
5332 }
5333 }
5334 require_file ("$am_file.am", GNU, 'COPYING')
5335 unless $license;
5336 }
5338 for my $opt ('no-installman', 'no-installinfo')
5339 {
5340 msg ('error-gnu', option $opt,
5341 "option `$opt' disallowed by GNU standards")
5342 if option $opt;
5343 }
5344 }
5346 # Do any extra checking for GNITS standards.
5347 sub check_gnits_standards
5348 {
5349 if ($relative_dir eq '.')
5350 {
5351 # In top level (or only) directory.
5352 require_file ("$am_file.am", GNITS, 'THANKS');
5353 }
5354 }
5356 ################################################################
5357 #
5358 # Functions to handle files of each language.
5360 # Each `lang_X_rewrite($DIRECTORY, $BASE, $EXT)' function follows a
5361 # simple formula: Return value is LANG_SUBDIR if the resulting object
5362 # file should be in a subdir if the source file is, LANG_PROCESS if
5363 # file is to be dealt with, LANG_IGNORE otherwise.
5365 # Much of the actual processing is handled in
5366 # handle_single_transform. These functions exist so that
5367 # auxiliary information can be recorded for a later cleanup pass.
5368 # Note that the calls to these functions are computed, so don't bother
5369 # searching for their precise names in the source.
5371 # This is just a convenience function that can be used to determine
5372 # when a subdir object should be used.
5373 sub lang_sub_obj
5374 {
5375 return option 'subdir-objects' ? LANG_SUBDIR : LANG_PROCESS;
5376 }
5378 # Rewrite a single C source file.
5379 sub lang_c_rewrite
5380 {
5381 my ($directory, $base, $ext, $nonansi_obj, $have_per_exec_flags, $var) = @_;
5383 if (option 'ansi2knr' && $base =~ /_$/)
5384 {
5385 # FIXME: include line number in error.
5386 err_am "C source file `$base.c' would be deleted by ansi2knr rules";
5387 }
5389 my $r = LANG_PROCESS;
5390 if (option 'subdir-objects')
5391 {
5392 $r = LANG_SUBDIR;
5393 if ($directory && $directory ne '.')
5394 {
5395 $base = $directory . '/' . $base;
5397 # libtool is always able to put the object at the proper place,
5398 # so we do not have to require AM_PROG_CC_C_O when building .lo files.
5399 msg_var ('portability', $var,
5400 "compiling `$base.c' in subdir requires "
5401 . "`AM_PROG_CC_C_O' in `$configure_ac'",
5402 uniq_scope => US_GLOBAL,
5403 uniq_part => 'AM_PROG_CC_C_O subdir')
5404 unless $seen_cc_c_o || $nonansi_obj eq '.lo';
5405 }
5407 # In this case we already have the directory information, so
5408 # don't add it again.
5409 $de_ansi_files{$base} = '';
5410 }
5411 else
5412 {
5413 $de_ansi_files{$base} = (($directory eq '.' || $directory eq '')
5414 ? ''
5415 : "$directory/");
5416 }
5418 if (! $seen_cc_c_o
5419 && $have_per_exec_flags
5420 && ! option 'subdir-objects'
5421 && $nonansi_obj ne '.lo')
5422 {
5423 msg_var ('portability',
5424 $var, "compiling `$base.c' with per-target flags requires "
5425 . "`AM_PROG_CC_C_O' in `$configure_ac'",
5426 uniq_scope => US_GLOBAL,
5427 uniq_part => 'AM_PROG_CC_C_O per-target')
5428 }
5430 return $r;
5431 }
5433 # Rewrite a single C++ source file.
5434 sub lang_cxx_rewrite
5435 {
5436 return &lang_sub_obj;
5437 }
5439 # Rewrite a single header file.
5440 sub lang_header_rewrite
5441 {
5442 # Header files are simply ignored.
5443 return LANG_IGNORE;
5444 }
5446 # Rewrite a single yacc file.
5447 sub lang_yacc_rewrite
5448 {
5449 my ($directory, $base, $ext) = @_;
5451 my $r = &lang_sub_obj;
5452 (my $newext = $ext) =~ tr/y/c/;
5453 return ($r, $newext);
5454 }
5456 # Rewrite a single yacc++ file.
5457 sub lang_yaccxx_rewrite
5458 {
5459 my ($directory, $base, $ext) = @_;
5461 my $r = &lang_sub_obj;
5462 (my $newext = $ext) =~ tr/y/c/;
5463 return ($r, $newext);
5464 }
5466 # Rewrite a single lex file.
5467 sub lang_lex_rewrite
5468 {
5469 my ($directory, $base, $ext) = @_;
5471 my $r = &lang_sub_obj;
5472 (my $newext = $ext) =~ tr/l/c/;
5473 return ($r, $newext);
5474 }
5476 # Rewrite a single lex++ file.
5477 sub lang_lexxx_rewrite
5478 {
5479 my ($directory, $base, $ext) = @_;
5481 my $r = &lang_sub_obj;
5482 (my $newext = $ext) =~ tr/l/c/;
5483 return ($r, $newext);
5484 }
5486 # Rewrite a single assembly file.
5487 sub lang_asm_rewrite
5488 {
5489 return &lang_sub_obj;
5490 }
5492 # Rewrite a single preprocessed assembly file.
5493 sub lang_cppasm_rewrite
5494 {
5495 return &lang_sub_obj;
5496 }
5498 # Rewrite a single Fortran 77 file.
5499 sub lang_f77_rewrite
5500 {
5501 return &lang_sub_obj;
5502 }
5504 # Rewrite a single Fortran file.
5505 sub lang_fc_rewrite
5506 {
5507 return &lang_sub_obj;
5508 }
5510 # Rewrite a single preprocessed Fortran file.
5511 sub lang_ppfc_rewrite
5512 {
5513 return &lang_sub_obj;
5514 }
5516 # Rewrite a single preprocessed Fortran 77 file.
5517 sub lang_ppf77_rewrite
5518 {
5519 return &lang_sub_obj;
5520 }
5522 # Rewrite a single ratfor file.
5523 sub lang_ratfor_rewrite
5524 {
5525 return &lang_sub_obj;
5526 }
5528 # Rewrite a single Objective C file.
5529 sub lang_objc_rewrite
5530 {
5531 return &lang_sub_obj;
5532 }
5534 # Rewrite a single Unified Parallel C file.
5535 sub lang_upc_rewrite
5536 {
5537 return &lang_sub_obj;
5538 }
5540 # Rewrite a single Java file.
5541 sub lang_java_rewrite
5542 {
5543 return LANG_SUBDIR;
5544 }
5546 # The lang_X_finish functions are called after all source file
5547 # processing is done. Each should handle defining rules for the
5548 # language, etc. A finish function is only called if a source file of
5549 # the appropriate type has been seen.
5551 sub lang_c_finish
5552 {
5553 # Push all libobjs files onto de_ansi_files. We actually only
5554 # push files which exist in the current directory, and which are
5555 # genuine source files.
5556 foreach my $file (keys %libsources)
5557 {
5558 if ($file =~ /^(.*)\.[cly]$/ && -f "$relative_dir/$file")
5559 {
5560 $de_ansi_files{$1} = ''
5561 }
5562 }
5564 if (option 'ansi2knr' && keys %de_ansi_files)
5565 {
5566 # Make all _.c files depend on their corresponding .c files.
5567 my @objects;
5568 foreach my $base (sort keys %de_ansi_files)
5569 {
5570 # Each _.c file must depend on ansi2knr; otherwise it
5571 # might be used in a parallel build before it is built.
5572 # We need to support files in the srcdir and in the build
5573 # dir (because these files might be auto-generated. But
5574 # we can't use $< -- some makes only define $< during a
5575 # suffix rule.
5576 my $ansfile = $de_ansi_files{$base} . $base . '.c';
5577 $output_rules .= ($base . "_.c: $ansfile \$(ANSI2KNR)\n\t"
5578 . '$(CPP) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS) $(CPPFLAGS) '
5579 . '`if test -f $(srcdir)/' . $ansfile
5580 . '; then echo $(srcdir)/' . $ansfile
5581 . '; else echo ' . $ansfile . '; fi` '
5582 . "| sed 's/^# \\([0-9]\\)/#line \\1/' "
5583 . '| $(ANSI2KNR) > $@'
5584 # If ansi2knr fails then we shouldn't
5585 # create the _.c file
5586 . " || rm -f \$\@\n");
5587 push (@objects, $base . '_.$(OBJEXT)');
5588 push (@objects, $base . '_.lo')
5589 if var ('LIBTOOL');
5591 # Explicitly clean the _.c files if they are in a
5592 # subdirectory. (In the current directory they get erased
5593 # by a `rm -f *_.c' rule.)
5594 $clean_files{$base . '_.c'} = MOSTLY_CLEAN
5595 if dirname ($base) ne '.';
5596 }
5598 # Make all _.o (and _.lo) files depend on ansi2knr.
5599 # Use a sneaky little hack to make it print nicely.
5600 &pretty_print_rule ('', '', @objects, ':', '$(ANSI2KNR)');
5601 }
5602 }
5604 # This is a yacc helper which is called whenever we have decided to
5605 # compile a yacc file.
5606 sub lang_yacc_target_hook
5607 {
5608 my ($self, $aggregate, $output, $input, %transform) = @_;
5610 my $flag = $aggregate . "_YFLAGS";
5611 my $flagvar = var $flag;
5612 my $YFLAGSvar = var 'YFLAGS';
5613 if (($flagvar && $flagvar->variable_value =~ /$DASH_D_PATTERN/o)
5614 || ($YFLAGSvar && $YFLAGSvar->variable_value =~ /$DASH_D_PATTERN/o))
5615 {
5616 (my $output_base = $output) =~ s/$KNOWN_EXTENSIONS_PATTERN$//;
5617 my $header = $output_base . '.h';
5619 # Found a `-d' that applies to the compilation of this file.
5620 # Add a dependency for the generated header file, and arrange
5621 # for that file to be included in the distribution.
5622 foreach my $cond (Automake::Rule::define (${header}, 'internal',
5623 RULE_AUTOMAKE, TRUE,
5624 INTERNAL))
5625 {
5626 my $condstr = $cond->subst_string;
5627 $output_rules .=
5628 "$condstr${header}: $output\n"
5629 # Recover from removal of $header
5630 . "$condstr\t\@if test ! -f \$@; then \\\n"
5631 . "$condstr\t rm -f $output; \\\n"
5632 . "$condstr\t \$(MAKE) \$(AM_MAKEFLAGS) $output; \\\n"
5633 . "$condstr\telse :; fi\n";
5634 }
5635 # Distribute the generated file, unless its .y source was
5636 # listed in a nodist_ variable. (&handle_source_transform
5637 # will set DIST_SOURCE.)
5638 &push_dist_common ($header)
5639 if $transform{'DIST_SOURCE'};
5641 # If the files are built in the build directory, then we want
5642 # to remove them with `make clean'. If they are in srcdir
5643 # they shouldn't be touched. However, we can't determine this
5644 # statically, and the GNU rules say that yacc/lex output files
5645 # should be removed by maintainer-clean. So that's what we
5646 # do.
5647 $clean_files{$header} = MAINTAINER_CLEAN;
5648 }
5649 # Erase $OUTPUT on `make maintainer-clean' (by GNU standards).
5650 # See the comment above for $HEADER.
5651 $clean_files{$output} = MAINTAINER_CLEAN;
5652 }
5654 # This is a lex helper which is called whenever we have decided to
5655 # compile a lex file.
5656 sub lang_lex_target_hook
5657 {
5658 my ($self, $aggregate, $output, $input) = @_;
5659 # If the files are built in the build directory, then we want to
5660 # remove them with `make clean'. If they are in srcdir they
5661 # shouldn't be touched. However, we can't determine this
5662 # statically, and the GNU rules say that yacc/lex output files
5663 # should be removed by maintainer-clean. So that's what we do.
5664 $clean_files{$output} = MAINTAINER_CLEAN;
5665 }
5667 # This is a helper for both lex and yacc.
5668 sub yacc_lex_finish_helper
5669 {
5670 return if defined $language_scratch{'lex-yacc-done'};
5671 $language_scratch{'lex-yacc-done'} = 1;
5673 # FIXME: for now, no line number.
5674 require_conf_file ($configure_ac, FOREIGN, 'ylwrap');
5675 &define_variable ('YLWRAP', "$am_config_aux_dir/ylwrap", INTERNAL);
5676 }
5678 sub lang_yacc_finish
5679 {
5680 return if defined $language_scratch{'yacc-done'};
5681 $language_scratch{'yacc-done'} = 1;
5683 reject_var 'YACCFLAGS', "`YACCFLAGS' obsolete; use `YFLAGS' instead";
5685 yacc_lex_finish_helper;
5686 }
5689 sub lang_lex_finish
5690 {
5691 return if defined $language_scratch{'lex-done'};
5692 $language_scratch{'lex-done'} = 1;
5694 yacc_lex_finish_helper;
5695 }
5698 # Given a hash table of linker names, pick the name that has the most
5699 # precedence. This is lame, but something has to have global
5700 # knowledge in order to eliminate the conflict. Add more linkers as
5701 # required.
5702 sub resolve_linker
5703 {
5704 my (%linkers) = @_;
5706 foreach my $l (qw(GCJLINK CXXLINK F77LINK FCLINK OBJCLINK UPCLINK))
5707 {
5708 return $l if defined $linkers{$l};
5709 }
5710 return 'LINK';
5711 }
5713 # Called to indicate that an extension was used.
5714 sub saw_extension
5715 {
5716 my ($ext) = @_;
5717 if (! defined $extension_seen{$ext})
5718 {
5719 $extension_seen{$ext} = 1;
5720 }
5721 else
5722 {
5723 ++$extension_seen{$ext};
5724 }
5725 }
5727 # Return the number of files seen for a given language. Knows about
5728 # special cases we care about. FIXME: this is hideous. We need
5729 # something that involves real language objects. For instance yacc
5730 # and yaccxx could both derive from a common yacc class which would
5731 # know about the strange ylwrap requirement. (Or better yet we could
5732 # just not support legacy yacc!)
5733 sub count_files_for_language
5734 {
5735 my ($name) = @_;
5737 my @names;
5738 if ($name eq 'yacc' || $name eq 'yaccxx')
5739 {
5740 @names = ('yacc', 'yaccxx');
5741 }
5742 elsif ($name eq 'lex' || $name eq 'lexxx')
5743 {
5744 @names = ('lex', 'lexxx');
5745 }
5746 else
5747 {
5748 @names = ($name);
5749 }
5751 my $r = 0;
5752 foreach $name (@names)
5753 {
5754 my $lang = $languages{$name};
5755 foreach my $ext (@{$lang->extensions})
5756 {
5757 $r += $extension_seen{$ext}
5758 if defined $extension_seen{$ext};
5759 }
5760 }
5762 return $r
5763 }
5765 # Called to ask whether source files have been seen . If HEADERS is 1,
5766 # headers can be included.
5767 sub saw_sources_p
5768 {
5769 my ($headers) = @_;
5771 # count all the sources
5772 my $count = 0;
5773 foreach my $val (values %extension_seen)
5774 {
5775 $count += $val;
5776 }
5778 if (!$headers)
5779 {
5780 $count -= count_files_for_language ('header');
5781 }
5783 return $count > 0;
5784 }
5787 # register_language (%ATTRIBUTE)
5788 # ------------------------------
5789 # Register a single language.
5790 # Each %ATTRIBUTE is of the form ATTRIBUTE => VALUE.
5791 sub register_language (%)
5792 {
5793 my (%option) = @_;
5795 # Set the defaults.
5796 $option{'ansi'} = 0
5797 unless defined $option{'ansi'};
5798 $option{'autodep'} = 'no'
5799 unless defined $option{'autodep'};
5800 $option{'linker'} = ''
5801 unless defined $option{'linker'};
5802 $option{'flags'} = []
5803 unless defined $option{'flags'};
5804 $option{'output_extensions'} = sub { return ( '.$(OBJEXT)', '.lo' ) }
5805 unless defined $option{'output_extensions'};
5806 $option{'nodist_specific'} = 0
5807 unless defined $option{'nodist_specific'};
5809 my $lang = new Language (%option);
5811 # Fill indexes.
5812 $extension_map{$_} = $lang->name foreach @{$lang->extensions};
5813 $languages{$lang->name} = $lang;
5814 my $link = $lang->linker;
5815 if ($link)
5816 {
5817 if (exists $link_languages{$link})
5818 {
5819 prog_error ("`$link' has different definitions in "
5820 . $lang->name . " and " . $link_languages{$link}->name)
5821 if $lang->link ne $link_languages{$link}->link;
5822 }
5823 else
5824 {
5825 $link_languages{$link} = $lang;
5826 }
5827 }
5829 # Update the pattern of known extensions.
5830 accept_extensions (@{$lang->extensions});
5832 # Upate the $suffix_rule map.
5833 foreach my $suffix (@{$lang->extensions})
5834 {
5835 foreach my $dest (&{$lang->output_extensions} ($suffix))
5836 {
5837 register_suffix_rule (INTERNAL, $suffix, $dest);
5838 }
5839 }
5840 }
5842 # derive_suffix ($EXT, $OBJ)
5843 # --------------------------
5844 # This function is used to find a path from a user-specified suffix $EXT
5845 # to $OBJ or to some other suffix we recognize internally, e.g. `cc'.
5846 sub derive_suffix ($$)
5847 {
5848 my ($source_ext, $obj) = @_;
5850 while (! $extension_map{$source_ext}
5851 && $source_ext ne $obj
5852 && exists $suffix_rules->{$source_ext}
5853 && exists $suffix_rules->{$source_ext}{$obj})
5854 {
5855 $source_ext = $suffix_rules->{$source_ext}{$obj}[0];
5856 }
5858 return $source_ext;
5859 }
5862 ################################################################
5864 # Pretty-print something and append to output_rules.
5865 sub pretty_print_rule
5866 {
5867 $output_rules .= &makefile_wrap (@_);
5868 }
5871 ################################################################
5874 ## -------------------------------- ##
5875 ## Handling the conditional stack. ##
5876 ## -------------------------------- ##
5879 # $STRING
5880 # make_conditional_string ($NEGATE, $COND)
5881 # ----------------------------------------
5882 sub make_conditional_string ($$)
5883 {
5884 my ($negate, $cond) = @_;
5885 $cond = "${cond}_TRUE"
5886 unless $cond =~ /^TRUE|FALSE$/;
5887 $cond = Automake::Condition::conditional_negate ($cond)
5888 if $negate;
5889 return $cond;
5890 }
5893 my %_am_macro_for_cond =
5894 (
5895 AMDEP => "one of the compiler tests\n"
5896 . " AC_PROG_CC, AC_PROG_CXX, AC_PROG_CXX, AC_PROG_OBJC,\n"
5897 . " AM_PROG_AS, AM_PROG_GCJ, AM_PROG_UPC",
5898 am__fastdepCC => 'AC_PROG_CC',
5899 am__fastdepCCAS => 'AM_PROG_AS',
5900 am__fastdepCXX => 'AC_PROG_CXX',
5901 am__fastdepGCJ => 'AM_PROG_GCJ',
5902 am__fastdepOBJC => 'AC_PROG_OBJC',
5903 am__fastdepUPC => 'AM_PROG_UPC'
5904 );
5906 # $COND
5907 # cond_stack_if ($NEGATE, $COND, $WHERE)
5908 # --------------------------------------
5909 sub cond_stack_if ($$$)
5910 {
5911 my ($negate, $cond, $where) = @_;
5913 if (! $configure_cond{$cond} && $cond !~ /^TRUE|FALSE$/)
5914 {
5915 my $text = "$cond does not appear in AM_CONDITIONAL";
5916 my $scope = US_LOCAL;
5917 if (exists $_am_macro_for_cond{$cond})
5918 {
5919 my $mac = $_am_macro_for_cond{$cond};
5920 $text .= "\n The usual way to define `$cond' is to add ";
5921 $text .= ($mac =~ / /) ? $mac : "`$mac'";
5922 $text .= "\n to `$configure_ac' and run `aclocal' and `autoconf' again.";
5923 # These warnings appear in Automake files (depend2.am),
5924 # so there is no need to display them more than once:
5925 $scope = US_GLOBAL;
5926 }
5927 error $where, $text, uniq_scope => $scope;
5928 }
5930 push (@cond_stack, make_conditional_string ($negate, $cond));
5932 return new Automake::Condition (@cond_stack);
5933 }
5936 # $COND
5937 # cond_stack_else ($NEGATE, $COND, $WHERE)
5938 # ----------------------------------------
5939 sub cond_stack_else ($$$)
5940 {
5941 my ($negate, $cond, $where) = @_;
5943 if (! @cond_stack)
5944 {
5945 error $where, "else without if";
5946 return FALSE;
5947 }
5949 $cond_stack[$#cond_stack] =
5950 Automake::Condition::conditional_negate ($cond_stack[$#cond_stack]);
5952 # If $COND is given, check against it.
5953 if (defined $cond)
5954 {
5955 $cond = make_conditional_string ($negate, $cond);
5957 error ($where, "else reminder ($negate$cond) incompatible with "
5958 . "current conditional: $cond_stack[$#cond_stack]")
5959 if $cond_stack[$#cond_stack] ne $cond;
5960 }
5962 return new Automake::Condition (@cond_stack);
5963 }
5966 # $COND
5967 # cond_stack_endif ($NEGATE, $COND, $WHERE)
5968 # -----------------------------------------
5969 sub cond_stack_endif ($$$)
5970 {
5971 my ($negate, $cond, $where) = @_;
5972 my $old_cond;
5974 if (! @cond_stack)
5975 {
5976 error $where, "endif without if";
5977 return TRUE;
5978 }
5980 # If $COND is given, check against it.
5981 if (defined $cond)
5982 {
5983 $cond = make_conditional_string ($negate, $cond);
5985 error ($where, "endif reminder ($negate$cond) incompatible with "
5986 . "current conditional: $cond_stack[$#cond_stack]")
5987 if $cond_stack[$#cond_stack] ne $cond;
5988 }
5990 pop @cond_stack;
5992 return new Automake::Condition (@cond_stack);
5993 }
5999 ## ------------------------ ##
6000 ## Handling the variables. ##
6001 ## ------------------------ ##
6004 # &define_pretty_variable ($VAR, $COND, $WHERE, @VALUE)
6005 # -----------------------------------------------------
6006 # Like define_variable, but the value is a list, and the variable may
6007 # be defined conditionally. The second argument is the Condition
6008 # under which the value should be defined; this should be the empty
6009 # string to define the variable unconditionally. The third argument
6010 # is a list holding the values to use for the variable. The value is
6011 # pretty printed in the output file.
6012 sub define_pretty_variable ($$$@)
6013 {
6014 my ($var, $cond, $where, @value) = @_;
6016 if (! vardef ($var, $cond))
6017 {
6018 Automake::Variable::define ($var, VAR_AUTOMAKE, '', $cond, "@value",
6019 '', $where, VAR_PRETTY);
6020 rvar ($var)->rdef ($cond)->set_seen;
6021 }
6022 }
6025 # define_variable ($VAR, $VALUE, $WHERE)
6026 # --------------------------------------
6027 # Define a new Automake Makefile variable VAR to VALUE, but only if
6028 # not already defined.
6029 sub define_variable ($$$)
6030 {
6031 my ($var, $value, $where) = @_;
6032 define_pretty_variable ($var, TRUE, $where, $value);
6033 }
6036 # define_files_variable ($VAR, \@BASENAME, $EXTENSION, $WHERE)
6037 # -----------------------------------------------------------
6038 # Define the $VAR which content is the list of file names composed of
6039 # a @BASENAME and the $EXTENSION.
6040 sub define_files_variable ($\@$$)
6041 {
6042 my ($var, $basename, $extension, $where) = @_;
6043 define_variable ($var,
6044 join (' ', map { "$_.$extension" } @$basename),
6045 $where);
6046 }
6049 # Like define_variable, but define a variable to be the configure
6050 # substitution by the same name.
6051 sub define_configure_variable ($)
6052 {
6053 my ($var) = @_;
6055 my $pretty = VAR_ASIS;
6056 my $owner = VAR_CONFIGURE;
6058 # Some variables we do not want to output. For instance it
6059 # would be a bad idea to output `U = @U@` when `@U@` can be
6060 # substituted as `\`.
6061 $pretty = VAR_SILENT if exists $ignored_configure_vars{$var};
6063 # ANSI2KNR is a variable that Automake wants to redefine, so
6064 # it must be owned by Automake. (It is also used as a proof
6065 # that AM_C_PROTOTYPES has been run, that's why we do not simply
6066 # omit the AC_SUBST.)
6067 $owner = VAR_AUTOMAKE if $var eq 'ANSI2KNR';
6069 Automake::Variable::define ($var, $owner, '', TRUE, subst $var,
6070 '', $configure_vars{$var}, $pretty);
6071 }
6074 # define_compiler_variable ($LANG)
6075 # --------------------------------
6076 # Define a compiler variable. We also handle defining the `LT'
6077 # version of the command when using libtool.
6078 sub define_compiler_variable ($)
6079 {
6080 my ($lang) = @_;
6082 my ($var, $value) = ($lang->compiler, $lang->compile);
6083 my $libtool_tag = '';
6084 $libtool_tag = '--tag=' . $lang->libtool_tag . ' '
6085 if $lang->libtool_tag && exists $libtool_tags{$lang->libtool_tag};
6086 &define_variable ($var, $value, INTERNAL);
6087 &define_variable ("LT$var",
6088 "\$(LIBTOOL) $libtool_tag\$(AM_LIBTOOLFLAGS) "
6089 . "\$(LIBTOOLFLAGS) --mode=compile $value",
6090 INTERNAL)
6091 if var ('LIBTOOL');
6092 }
6095 # define_linker_variable ($LANG)
6096 # ------------------------------
6097 # Define linker variables.
6098 sub define_linker_variable ($)
6099 {
6100 my ($lang) = @_;
6102 my $libtool_tag = '';
6103 $libtool_tag = '--tag=' . $lang->libtool_tag . ' '
6104 if $lang->libtool_tag && exists $libtool_tags{$lang->libtool_tag};
6105 # CCLD = $(CC).
6106 &define_variable ($lang->lder, $lang->ld, INTERNAL);
6107 # CCLINK = $(CCLD) blah blah...
6108 &define_variable ($lang->linker,
6109 ((var ('LIBTOOL') ?
6110 "\$(LIBTOOL) $libtool_tag\$(AM_LIBTOOLFLAGS) "
6111 . "\$(LIBTOOLFLAGS) --mode=link " : '')
6112 . $lang->link),
6113 INTERNAL);
6114 }
6116 sub define_per_target_linker_variable ($$)
6117 {
6118 my ($linker, $target) = @_;
6120 # If the user wrote a custom link command, we don't define ours.
6121 return "${target}_LINK"
6122 if set_seen "${target}_LINK";
6124 my $xlink = $linker ? $linker : 'LINK';
6126 my $lang = $link_languages{$xlink};
6127 prog_error "Unknown language for linker variable `$xlink'"
6128 unless $lang;
6130 my $link_command = $lang->link;
6131 if (var 'LIBTOOL')
6132 {
6133 my $libtool_tag = '';
6134 $libtool_tag = '--tag=' . $lang->libtool_tag . ' '
6135 if $lang->libtool_tag && exists $libtool_tags{$lang->libtool_tag};
6137 $link_command =
6138 "\$(LIBTOOL) $libtool_tag\$(AM_LIBTOOLFLAGS) \$(LIBTOOLFLAGS) "
6139 . "--mode=link " . $link_command;
6140 }
6142 # Rewrite each occurrence of `AM_$flag' in the link
6143 # command into `${derived}_$flag' if it exists.
6144 my $orig_command = $link_command;
6145 my @flags = (@{$lang->flags}, 'LDFLAGS');
6146 push @flags, 'LIBTOOLFLAGS' if var 'LIBTOOL';
6147 for my $flag (@flags)
6148 {
6149 my $val = "${target}_$flag";
6150 $link_command =~ s/\(AM_$flag\)/\($val\)/
6151 if set_seen ($val);
6152 }
6154 # If the computed command is the same as the generic command, use
6155 # the command linker variable.
6156 return $lang->linker
6157 if $link_command eq $orig_command;
6159 &define_variable ("${target}_LINK", $link_command, INTERNAL);
6160 return "${target}_LINK";
6161 }
6163 ################################################################
6165 # &check_trailing_slash ($WHERE, $LINE)
6166 # --------------------------------------
6167 # Return 1 iff $LINE ends with a slash.
6168 # Might modify $LINE.
6169 sub check_trailing_slash ($\$)
6170 {
6171 my ($where, $line) = @_;
6173 # Ignore `##' lines.
6174 return 0 if $$line =~ /$IGNORE_PATTERN/o;
6176 # Catch and fix a common error.
6177 msg "syntax", $where, "whitespace following trailing backslash"
6178 if $$line =~ s/\\\s+\n$/\\\n/;
6180 return $$line =~ /\\$/;
6181 }
6184 # &read_am_file ($AMFILE, $WHERE)
6185 # -------------------------------
6186 # Read Makefile.am and set up %contents. Simultaneously copy lines
6187 # from Makefile.am into $output_trailer, or define variables as
6188 # appropriate. NOTE we put rules in the trailer section. We want
6189 # user rules to come after our generated stuff.
6190 sub read_am_file ($$)
6191 {
6192 my ($amfile, $where) = @_;
6194 my $am_file = new Automake::XFile ("< $amfile");
6195 verb "reading $amfile";
6197 # Keep track of the youngest output dependency.
6198 my $mtime = mtime $amfile;
6199 $output_deps_greatest_timestamp = $mtime
6200 if $mtime > $output_deps_greatest_timestamp;
6202 my $spacing = '';
6203 my $comment = '';
6204 my $blank = 0;
6205 my $saw_bk = 0;
6206 my $var_look = VAR_ASIS;
6208 use constant IN_VAR_DEF => 0;
6209 use constant IN_RULE_DEF => 1;
6210 use constant IN_COMMENT => 2;
6211 my $prev_state = IN_RULE_DEF;
6213 while ($_ = $am_file->getline)
6214 {
6215 $where->set ("$amfile:$.");
6216 if (/$IGNORE_PATTERN/o)
6217 {
6218 # Merely delete comments beginning with two hashes.
6219 }
6220 elsif (/$WHITE_PATTERN/o)
6221 {
6222 error $where, "blank line following trailing backslash"
6223 if $saw_bk;
6224 # Stick a single white line before the incoming macro or rule.
6225 $spacing = "\n";
6226 $blank = 1;
6227 # Flush all comments seen so far.
6228 if ($comment ne '')
6229 {
6230 $output_vars .= $comment;
6231 $comment = '';
6232 }
6233 }
6234 elsif (/$COMMENT_PATTERN/o)
6235 {
6236 # Stick comments before the incoming macro or rule. Make
6237 # sure a blank line precedes the first block of comments.
6238 $spacing = "\n" unless $blank;
6239 $blank = 1;
6240 $comment .= $spacing . $_;
6241 $spacing = '';
6242 $prev_state = IN_COMMENT;
6243 }
6244 else
6245 {
6246 last;
6247 }
6248 $saw_bk = check_trailing_slash ($where, $_);
6249 }
6251 # We save the conditional stack on entry, and then check to make
6252 # sure it is the same on exit. This lets us conditionally include
6253 # other files.
6254 my @saved_cond_stack = @cond_stack;
6255 my $cond = new Automake::Condition (@cond_stack);
6257 my $last_var_name = '';
6258 my $last_var_type = '';
6259 my $last_var_value = '';
6260 my $last_where;
6261 # FIXME: shouldn't use $_ in this loop; it is too big.
6262 while ($_)
6263 {
6264 $where->set ("$amfile:$.");
6266 # Make sure the line is \n-terminated.
6267 chomp;
6268 $_ .= "\n";
6270 # Don't look at MAINTAINER_MODE_TRUE here. That shouldn't be
6271 # used by users. @MAINT@ is an anachronism now.
6272 $_ =~ s/\@MAINT\@//g
6273 unless $seen_maint_mode;
6275 my $new_saw_bk = check_trailing_slash ($where, $_);
6277 if (/$IGNORE_PATTERN/o)
6278 {
6279 # Merely delete comments beginning with two hashes.
6281 # Keep any backslash from the previous line.
6282 $new_saw_bk = $saw_bk;
6283 }
6284 elsif (/$WHITE_PATTERN/o)
6285 {
6286 # Stick a single white line before the incoming macro or rule.
6287 $spacing = "\n";
6288 error $where, "blank line following trailing backslash"
6289 if $saw_bk;
6290 }
6291 elsif (/$COMMENT_PATTERN/o)
6292 {
6293 error $where, "comment following trailing backslash"
6294 if $saw_bk && $comment eq '';
6296 # Stick comments before the incoming macro or rule.
6297 $comment .= $spacing . $_;
6298 $spacing = '';
6299 $prev_state = IN_COMMENT;
6300 }
6301 elsif ($saw_bk)
6302 {
6303 if ($prev_state == IN_RULE_DEF)
6304 {
6305 my $cond = new Automake::Condition @cond_stack;
6306 $output_trailer .= $cond->subst_string;
6307 $output_trailer .= $_;
6308 }
6309 elsif ($prev_state == IN_COMMENT)
6310 {
6311 # If the line doesn't start with a `#', add it.
6312 # We do this because a continued comment like
6313 # # A = foo \
6314 # bar \
6315 # baz
6316 # is not portable. BSD make doesn't honor
6317 # escaped newlines in comments.
6318 s/^#?/#/;
6319 $comment .= $spacing . $_;
6320 }
6321 else # $prev_state == IN_VAR_DEF
6322 {
6323 $last_var_value .= ' '
6324 unless $last_var_value =~ /\s$/;
6325 $last_var_value .= $_;
6327 if (!/\\$/)
6328 {
6329 Automake::Variable::define ($last_var_name, VAR_MAKEFILE,
6330 $last_var_type, $cond,
6331 $last_var_value, $comment,
6332 $last_where, VAR_ASIS)
6333 if $cond != FALSE;
6334 $comment = $spacing = '';
6335 }
6336 }
6337 }
6339 elsif (/$IF_PATTERN/o)
6340 {
6341 $cond = cond_stack_if ($1, $2, $where);
6342 }
6343 elsif (/$ELSE_PATTERN/o)
6344 {
6345 $cond = cond_stack_else ($1, $2, $where);
6346 }
6347 elsif (/$ENDIF_PATTERN/o)
6348 {
6349 $cond = cond_stack_endif ($1, $2, $where);
6350 }
6352 elsif (/$RULE_PATTERN/o)
6353 {
6354 # Found a rule.
6355 $prev_state = IN_RULE_DEF;
6357 # For now we have to output all definitions of user rules
6358 # and can't diagnose duplicates (see the comment in
6359 # Automake::Rule::define). So we go on and ignore the return value.
6360 Automake::Rule::define ($1, $amfile, RULE_USER, $cond, $where);
6362 check_variable_expansions ($_, $where);
6364 $output_trailer .= $comment . $spacing;
6365 my $cond = new Automake::Condition @cond_stack;
6366 $output_trailer .= $cond->subst_string;
6367 $output_trailer .= $_;
6368 $comment = $spacing = '';
6369 }
6370 elsif (/$ASSIGNMENT_PATTERN/o)
6371 {
6372 # Found a macro definition.
6373 $prev_state = IN_VAR_DEF;
6374 $last_var_name = $1;
6375 $last_var_type = $2;
6376 $last_var_value = $3;
6377 $last_where = $where->clone;
6378 if ($3 ne '' && substr ($3, -1) eq "\\")
6379 {
6380 # We preserve the `\' because otherwise the long lines
6381 # that are generated will be truncated by broken
6382 # `sed's.
6383 $last_var_value = $3 . "\n";
6384 }
6385 # Normally we try to output variable definitions in the
6386 # same format they were input. However, POSIX compliant
6387 # systems are not required to support lines longer than
6388 # 2048 bytes (most notably, some sed implementation are
6389 # limited to 4000 bytes, and sed is used by config.status
6390 # to rewrite Makefile.in into Makefile). Moreover nobody
6391 # would really write such long lines by hand since it is
6392 # hardly maintainable. So if a line is longer that 1000
6393 # bytes (an arbitrary limit), assume it has been
6394 # automatically generated by some tools, and flatten the
6395 # variable definition. Otherwise, keep the variable as it
6396 # as been input.
6397 $var_look = VAR_PRETTY if length ($last_var_value) >= 1000;
6399 if (!/\\$/)
6400 {
6401 Automake::Variable::define ($last_var_name, VAR_MAKEFILE,
6402 $last_var_type, $cond,
6403 $last_var_value, $comment,
6404 $last_where, $var_look)
6405 if $cond != FALSE;
6406 $comment = $spacing = '';
6407 $var_look = VAR_ASIS;
6408 }
6409 }
6410 elsif (/$INCLUDE_PATTERN/o)
6411 {
6412 my $path = $1;
6414 if ($path =~ s/^\$\(top_srcdir\)\///)
6415 {
6416 push (@include_stack, "\$\(top_srcdir\)/$path");
6417 # Distribute any included file.
6419 # Always use the $(top_srcdir) prefix in DIST_COMMON,
6420 # otherwise OSF make will implicitly copy the included
6421 # file in the build tree during `make distdir' to satisfy
6422 # the dependency.
6423 # (subdircond2.test and subdircond3.test will fail.)
6424 push_dist_common ("\$\(top_srcdir\)/$path");
6425 }
6426 else
6427 {
6428 $path =~ s/\$\(srcdir\)\///;
6429 push (@include_stack, "\$\(srcdir\)/$path");
6430 # Always use the $(srcdir) prefix in DIST_COMMON,
6431 # otherwise OSF make will implicitly copy the included
6432 # file in the build tree during `make distdir' to satisfy
6433 # the dependency.
6434 # (subdircond2.test and subdircond3.test will fail.)
6435 push_dist_common ("\$\(srcdir\)/$path");
6436 $path = $relative_dir . "/" . $path if $relative_dir ne '.';
6437 }
6438 $where->push_context ("`$path' included from here");
6439 &read_am_file ($path, $where);
6440 $where->pop_context;
6441 }
6442 else
6443 {
6444 # This isn't an error; it is probably a continued rule.
6445 # In fact, this is what we assume.
6446 $prev_state = IN_RULE_DEF;
6447 check_variable_expansions ($_, $where);
6448 $output_trailer .= $comment . $spacing;
6449 my $cond = new Automake::Condition @cond_stack;
6450 $output_trailer .= $cond->subst_string;
6451 $output_trailer .= $_;
6452 $comment = $spacing = '';
6453 error $where, "`#' comment at start of rule is unportable"
6454 if $_ =~ /^\t\s*\#/;
6455 }
6457 $saw_bk = $new_saw_bk;
6458 $_ = $am_file->getline;
6459 }
6461 $output_trailer .= $comment;
6463 error ($where, "trailing backslash on last line")
6464 if $saw_bk;
6466 error ($where, (@cond_stack ? "unterminated conditionals: @cond_stack"
6467 : "too many conditionals closed in include file"))
6468 if "@saved_cond_stack" ne "@cond_stack";
6469 }
6472 # define_standard_variables ()
6473 # ----------------------------
6474 # A helper for read_main_am_file which initializes configure variables
6475 # and variables from header-vars.am.
6476 sub define_standard_variables
6477 {
6478 my $saved_output_vars = $output_vars;
6479 my ($comments, undef, $rules) =
6480 file_contents_internal (1, "$libdir/am/header-vars.am",
6481 new Automake::Location);
6483 foreach my $var (sort keys %configure_vars)
6484 {
6485 &define_configure_variable ($var);
6486 }
6488 $output_vars .= $comments . $rules;
6489 }
6491 # Read main am file.
6492 sub read_main_am_file
6493 {
6494 my ($amfile) = @_;
6496 # This supports the strange variable tricks we are about to play.
6497 prog_error (macros_dump () . "variable defined before read_main_am_file")
6498 if (scalar (variables) > 0);
6500 # Generate copyright header for generated Makefile.in.
6501 # We do discard the output of predefined variables, handled below.
6502 $output_vars = ("# $in_file_name generated by automake "
6503 . $VERSION . " from $am_file_name.\n");
6504 $output_vars .= '# ' . subst ('configure_input') . "\n";
6505 $output_vars .= $gen_copyright;
6507 # We want to predefine as many variables as possible. This lets
6508 # the user set them with `+=' in Makefile.am.
6509 &define_standard_variables;
6511 # Read user file, which might override some of our values.
6512 &read_am_file ($amfile, new Automake::Location);
6513 }
6517 ################################################################
6519 # $FLATTENED
6520 # &flatten ($STRING)
6521 # ------------------
6522 # Flatten the $STRING and return the result.
6523 sub flatten
6524 {
6525 $_ = shift;
6527 s/\\\n//somg;
6528 s/\s+/ /g;
6529 s/^ //;
6530 s/ $//;
6532 return $_;
6533 }
6536 # transform_token ($TOKEN, \%PAIRS, $KEY)
6537 # =======================================
6538 # Return the value associated to $KEY in %PAIRS, as used on $TOKEN
6539 # (which should be ?KEY? or any of the special %% requests)..
6540 sub transform_token ($$$)
6541 {
6542 my ($token, $transform, $key) = @_;
6543 my $res = $transform->{$key};
6544 prog_error "Unknown key `$key' in `$token'" unless defined $res;
6545 return $res;
6546 }
6549 # transform ($TOKEN, \%PAIRS)
6550 # ===========================
6551 # If ($TOKEN, $VAL) is in %PAIRS:
6552 # - replaces %KEY% with $VAL,
6553 # - enables/disables ?KEY? and ?!KEY?,
6554 # - replaces %?KEY% with TRUE or FALSE.
6555 # - replaces %KEY?IFTRUE%, %KEY:IFFALSE%, and %KEY?IFTRUE:IFFALSE% with
6556 # IFTRUE / IFFALSE, as appropriate.
6557 sub transform ($$)
6558 {
6559 my ($token, $transform) = @_;
6561 # %KEY%.
6562 # Must be before the following pattern to exclude the case
6563 # when there is neither IFTRUE nor IFFALSE.
6564 if ($token =~ /^%([\w\-]+)%$/)
6565 {
6566 return transform_token ($token, $transform, $1);
6567 }
6568 # %KEY?IFTRUE%, %KEY:IFFALSE%, and %KEY?IFTRUE:IFFALSE%.
6569 elsif ($token =~ /^%([\w\-]+)(?:\?([^?:%]+))?(?::([^?:%]+))?%$/)
6570 {
6571 return transform_token ($token, $transform, $1) ? ($2 || '') : ($3 || '');
6572 }
6573 # %?KEY%.
6574 elsif ($token =~ /^%\?([\w\-]+)%$/)
6575 {
6576 return transform_token ($token, $transform, $1) ? 'TRUE' : 'FALSE';
6577 }
6578 # ?KEY? and ?!KEY?.
6579 elsif ($token =~ /^ \? (!?) ([\w\-]+) \? $/x)
6580 {
6581 my $neg = ($1 eq '!') ? 1 : 0;
6582 my $val = transform_token ($token, $transform, $2);
6583 return (!!$val == $neg) ? '##%' : '';
6584 }
6585 else
6586 {
6587 prog_error "Unknown request format: $token";
6588 }
6589 }
6592 # @PARAGRAPHS
6593 # &make_paragraphs ($MAKEFILE, [%TRANSFORM])
6594 # ------------------------------------------
6595 # Load a $MAKEFILE, apply the %TRANSFORM, and return it as a list of
6596 # paragraphs.
6597 sub make_paragraphs ($%)
6598 {
6599 my ($file, %transform) = @_;
6601 # Complete %transform with global options.
6602 # Note that %transform goes last, so it overrides global options.
6603 %transform = ('CYGNUS' => !! option 'cygnus',
6604 'MAINTAINER-MODE'
6605 => $seen_maint_mode ? subst ('MAINTAINER_MODE_TRUE') : '',
6607 'LZMA' => !! option 'dist-lzma',
6608 'BZIP2' => !! option 'dist-bzip2',
6609 'COMPRESS' => !! option 'dist-tarZ',
6610 'GZIP' => ! option 'no-dist-gzip',
6611 'SHAR' => !! option 'dist-shar',
6612 'ZIP' => !! option 'dist-zip',
6614 'INSTALL-INFO' => ! option 'no-installinfo',
6615 'INSTALL-MAN' => ! option 'no-installman',
6616 'CK-NEWS' => !! option 'check-news',
6618 'SUBDIRS' => !! var ('SUBDIRS'),
6619 'TOPDIR_P' => $relative_dir eq '.',
6621 'BUILD' => ($seen_canonical >= AC_CANONICAL_BUILD),
6622 'HOST' => ($seen_canonical >= AC_CANONICAL_HOST),
6623 'TARGET' => ($seen_canonical >= AC_CANONICAL_TARGET),
6625 'LIBTOOL' => !! var ('LIBTOOL'),
6626 'NONLIBTOOL' => 1,
6627 'FIRST' => ! $transformed_files{$file},
6628 %transform);
6630 $transformed_files{$file} = 1;
6631 $_ = $am_file_cache{$file};
6633 if (! defined $_)
6634 {
6635 verb "reading $file";
6636 # Swallow the whole file.
6637 my $fc_file = new Automake::XFile "< $file";
6638 my $saved_dollar_slash = $/;
6639 undef $/;
6640 $_ = $fc_file->getline;
6641 $/ = $saved_dollar_slash;
6642 $fc_file->close;
6644 # Remove ##-comments.
6645 # Besides we don't need more than two consecutive new-lines.
6646 s/(?:$IGNORE_PATTERN|(?<=\n\n)\n+)//gom;
6648 $am_file_cache{$file} = $_;
6649 }
6651 # Substitute Automake template tokens.
6652 s/(?: % \?? [\w\-]+ %
6653 | % [\w\-]+ (?:\?[^?:%]+)? (?::[^?:%]+)? %
6654 | \? !? [\w\-]+ \?
6655 )/transform($&, \%transform)/gex;
6656 # transform() may have added some ##%-comments to strip.
6657 # (we use `##%' instead of `##' so we can distinguish ##%##%##% from
6658 # ####### and do not remove the latter.)
6659 s/^[ \t]*(?:##%)+.*\n//gm;
6661 # Split at unescaped new lines.
6662 my @lines = split (/(?<!\\)\n/, $_);
6663 my @res;
6665 while (defined ($_ = shift @lines))
6666 {
6667 my $paragraph = $_;
6668 # If we are a rule, eat as long as we start with a tab.
6669 if (/$RULE_PATTERN/smo)
6670 {
6671 while (defined ($_ = shift @lines) && $_ =~ /^\t/)
6672 {
6673 $paragraph .= "\n$_";
6674 }
6675 unshift (@lines, $_);
6676 }
6678 # If we are a comments, eat as much comments as you can.
6679 elsif (/$COMMENT_PATTERN/smo)
6680 {
6681 while (defined ($_ = shift @lines)
6682 && $_ =~ /$COMMENT_PATTERN/smo)
6683 {
6684 $paragraph .= "\n$_";
6685 }
6686 unshift (@lines, $_);
6687 }
6689 push @res, $paragraph;
6690 }
6692 return @res;
6693 }
6697 # ($COMMENT, $VARIABLES, $RULES)
6698 # &file_contents_internal ($IS_AM, $FILE, $WHERE, [%TRANSFORM])
6699 # -------------------------------------------------------------
6700 # Return contents of a file from $libdir/am, automatically skipping
6701 # macros or rules which are already known. $IS_AM iff the caller is
6702 # reading an Automake file (as opposed to the user's Makefile.am).
6703 sub file_contents_internal ($$$%)
6704 {
6705 my ($is_am, $file, $where, %transform) = @_;
6707 $where->set ($file);
6709 my $result_vars = '';
6710 my $result_rules = '';
6711 my $comment = '';
6712 my $spacing = '';
6714 # The following flags are used to track rules spanning across
6715 # multiple paragraphs.
6716 my $is_rule = 0; # 1 if we are processing a rule.
6717 my $discard_rule = 0; # 1 if the current rule should not be output.
6719 # We save the conditional stack on entry, and then check to make
6720 # sure it is the same on exit. This lets us conditionally include
6721 # other files.
6722 my @saved_cond_stack = @cond_stack;
6723 my $cond = new Automake::Condition (@cond_stack);
6725 foreach (make_paragraphs ($file, %transform))
6726 {
6727 # FIXME: no line number available.
6728 $where->set ($file);
6730 # Sanity checks.
6731 error $where, "blank line following trailing backslash:\n$_"
6732 if /\\$/;
6733 error $where, "comment following trailing backslash:\n$_"
6734 if /\\#/;
6736 if (/^$/)
6737 {
6738 $is_rule = 0;
6739 # Stick empty line before the incoming macro or rule.
6740 $spacing = "\n";
6741 }
6742 elsif (/$COMMENT_PATTERN/mso)
6743 {
6744 $is_rule = 0;
6745 # Stick comments before the incoming macro or rule.
6746 $comment = "$_\n";
6747 }
6749 # Handle inclusion of other files.
6750 elsif (/$INCLUDE_PATTERN/o)
6751 {
6752 if ($cond != FALSE)
6753 {
6754 my $file = ($is_am ? "$libdir/am/" : '') . $1;
6755 $where->push_context ("`$file' included from here");
6756 # N-ary `.=' fails.
6757 my ($com, $vars, $rules)
6758 = file_contents_internal ($is_am, $file, $where, %transform);
6759 $where->pop_context;
6760 $comment .= $com;
6761 $result_vars .= $vars;
6762 $result_rules .= $rules;
6763 }
6764 }
6766 # Handling the conditionals.
6767 elsif (/$IF_PATTERN/o)
6768 {
6769 $cond = cond_stack_if ($1, $2, $file);
6770 }
6771 elsif (/$ELSE_PATTERN/o)
6772 {
6773 $cond = cond_stack_else ($1, $2, $file);
6774 }
6775 elsif (/$ENDIF_PATTERN/o)
6776 {
6777 $cond = cond_stack_endif ($1, $2, $file);
6778 }
6780 # Handling rules.
6781 elsif (/$RULE_PATTERN/mso)
6782 {
6783 $is_rule = 1;
6784 $discard_rule = 0;
6785 # Separate relationship from optional actions: the first
6786 # `new-line tab" not preceded by backslash (continuation
6787 # line).
6788 my $paragraph = $_;
6789 /^(.*?)(?:(?<!\\)\n(\t.*))?$/s;
6790 my ($relationship, $actions) = ($1, $2 || '');
6792 # Separate targets from dependencies: the first colon.
6793 $relationship =~ /^([^:]+\S+) *: *(.*)$/som;
6794 my ($targets, $dependencies) = ($1, $2);
6795 # Remove the escaped new lines.
6796 # I don't know why, but I have to use a tmp $flat_deps.
6797 my $flat_deps = &flatten ($dependencies);
6798 my @deps = split (' ', $flat_deps);
6800 foreach (split (' ' , $targets))
6801 {
6802 # FIXME: 1. We are not robust to people defining several targets
6803 # at once, only some of them being in %dependencies. The
6804 # actions from the targets in %dependencies are usually generated
6805 # from the content of %actions, but if some targets in $targets
6806 # are not in %dependencies the ELSE branch will output
6807 # a rule for all $targets (i.e. the targets which are both
6808 # in %dependencies and $targets will have two rules).
6810 # FIXME: 2. The logic here is not able to output a
6811 # multi-paragraph rule several time (e.g. for each condition
6812 # it is defined for) because it only knows the first paragraph.
6814 # FIXME: 3. We are not robust to people defining a subset
6815 # of a previously defined "multiple-target" rule. E.g.
6816 # `foo:' after `foo bar:'.
6818 # Output only if not in FALSE.
6819 if (defined $dependencies{$_} && $cond != FALSE)
6820 {
6821 &depend ($_, @deps);
6822 register_action ($_, $actions);
6823 }
6824 else
6825 {
6826 # Free-lance dependency. Output the rule for all the
6827 # targets instead of one by one.
6828 my @undefined_conds =
6829 Automake::Rule::define ($targets, $file,
6830 $is_am ? RULE_AUTOMAKE : RULE_USER,
6831 $cond, $where);
6832 for my $undefined_cond (@undefined_conds)
6833 {
6834 my $condparagraph = $paragraph;
6835 $condparagraph =~ s/^/$undefined_cond->subst_string/gme;
6836 $result_rules .= "$spacing$comment$condparagraph\n";
6837 }
6838 if (scalar @undefined_conds == 0)
6839 {
6840 # Remember to discard next paragraphs
6841 # if they belong to this rule.
6842 # (but see also FIXME: #2 above.)
6843 $discard_rule = 1;
6844 }
6845 $comment = $spacing = '';
6846 last;
6847 }
6848 }
6849 }
6851 elsif (/$ASSIGNMENT_PATTERN/mso)
6852 {
6853 my ($var, $type, $val) = ($1, $2, $3);
6854 error $where, "variable `$var' with trailing backslash"
6855 if /\\$/;
6857 $is_rule = 0;
6859 Automake::Variable::define ($var,
6860 $is_am ? VAR_AUTOMAKE : VAR_MAKEFILE,
6861 $type, $cond, $val, $comment, $where,
6862 VAR_ASIS)
6863 if $cond != FALSE;
6865 $comment = $spacing = '';
6866 }
6867 else
6868 {
6869 # This isn't an error; it is probably some tokens which
6870 # configure is supposed to replace, such as `@SET-MAKE@',
6871 # or some part of a rule cut by an if/endif.
6872 if (! $cond->false && ! ($is_rule && $discard_rule))
6873 {
6874 s/^/$cond->subst_string/gme;
6875 $result_rules .= "$spacing$comment$_\n";
6876 }
6877 $comment = $spacing = '';
6878 }
6879 }
6881 error ($where, @cond_stack ?
6882 "unterminated conditionals: @cond_stack" :
6883 "too many conditionals closed in include file")
6884 if "@saved_cond_stack" ne "@cond_stack";
6886 return ($comment, $result_vars, $result_rules);
6887 }
6890 # $CONTENTS
6891 # &file_contents ($BASENAME, $WHERE, [%TRANSFORM])
6892 # ------------------------------------------------
6893 # Return contents of a file from $libdir/am, automatically skipping
6894 # macros or rules which are already known.
6895 sub file_contents ($$%)
6896 {
6897 my ($basename, $where, %transform) = @_;
6898 my ($comments, $variables, $rules) =
6899 file_contents_internal (1, "$libdir/am/$basename.am", $where,
6900 %transform);
6901 return "$comments$variables$rules";
6902 }
6905 # @PREFIX
6906 # &am_primary_prefixes ($PRIMARY, $CAN_DIST, @PREFIXES)
6907 # -----------------------------------------------------
6908 # Find all variable prefixes that are used for install directories. A
6909 # prefix `zar' qualifies iff:
6910 #
6911 # * `zardir' is a variable.
6912 # * `zar_PRIMARY' is a variable.
6913 #
6914 # As a side effect, it looks for misspellings. It is an error to have
6915 # a variable ending in a "reserved" suffix whose prefix is unknown, e.g.
6916 # "bni_PROGRAMS". However, unusual prefixes are allowed if a variable
6917 # of the same name (with "dir" appended) exists. For instance, if the
6918 # variable "zardir" is defined, then "zar_PROGRAMS" becomes valid.
6919 # This is to provide a little extra flexibility in those cases which
6920 # need it.
6921 sub am_primary_prefixes ($$@)
6922 {
6923 my ($primary, $can_dist, @prefixes) = @_;
6925 local $_;
6926 my %valid = map { $_ => 0 } @prefixes;
6927 $valid{'EXTRA'} = 0;
6928 foreach my $var (variables $primary)
6929 {
6930 # Automake is allowed to define variables that look like primaries
6931 # but which aren't. E.g. INSTALL_sh_DATA.
6932 # Autoconf can also define variables like INSTALL_DATA, so
6933 # ignore all configure variables (at least those which are not
6934 # redefined in Makefile.am).
6935 # FIXME: We should make sure that these variables are not
6936 # conditionally defined (or else adjust the condition below).
6937 my $def = $var->def (TRUE);
6938 next if $def && $def->owner != VAR_MAKEFILE;
6940 my $varname = $var->name;
6942 if ($varname =~ /^(nobase_)?(dist_|nodist_)?(.*)_[[:alnum:]]+$/)
6943 {
6944 my ($base, $dist, $X) = ($1 || '', $2 || '', $3 || '');
6945 if ($dist ne '' && ! $can_dist)
6946 {
6947 err_var ($var,
6948 "invalid variable `$varname': `dist' is forbidden");
6949 }
6950 # Standard directories must be explicitly allowed.
6951 elsif (! defined $valid{$X} && exists $standard_prefix{$X})
6952 {
6953 err_var ($var,
6954 "`${X}dir' is not a legitimate directory " .
6955 "for `$primary'");
6956 }
6957 # A not explicitly valid directory is allowed if Xdir is defined.
6958 elsif (! defined $valid{$X} &&
6959 $var->requires_variables ("`$varname' is used", "${X}dir"))
6960 {
6961 # Nothing to do. Any error message has been output
6962 # by $var->requires_variables.
6963 }
6964 else
6965 {
6966 # Ensure all extended prefixes are actually used.
6967 $valid{"$base$dist$X"} = 1;
6968 }
6969 }
6970 else
6971 {
6972 prog_error "unexpected variable name: $varname";
6973 }
6974 }
6976 # Return only those which are actually defined.
6977 return sort grep { var ($_ . '_' . $primary) } keys %valid;
6978 }
6981 # Handle `where_HOW' variable magic. Does all lookups, generates
6982 # install code, and possibly generates code to define the primary
6983 # variable. The first argument is the name of the .am file to munge,
6984 # the second argument is the primary variable (e.g. HEADERS), and all
6985 # subsequent arguments are possible installation locations.
6986 #
6987 # Returns list of [$location, $value] pairs, where
6988 # $value's are the values in all where_HOW variable, and $location
6989 # there associated location (the place here their parent variables were
6990 # defined).
6991 #
6992 # FIXME: this should be rewritten to be cleaner. It should be broken
6993 # up into multiple functions.
6994 #
6995 # Usage is: am_install_var (OPTION..., file, HOW, where...)
6996 sub am_install_var
6997 {
6998 my (@args) = @_;
7000 my $do_require = 1;
7001 my $can_dist = 0;
7002 my $default_dist = 0;
7003 while (@args)
7004 {
7005 if ($args[0] eq '-noextra')
7006 {
7007 $do_require = 0;
7008 }
7009 elsif ($args[0] eq '-candist')
7010 {
7011 $can_dist = 1;
7012 }
7013 elsif ($args[0] eq '-defaultdist')
7014 {
7015 $default_dist = 1;
7016 $can_dist = 1;
7017 }
7018 elsif ($args[0] !~ /^-/)
7019 {
7020 last;
7021 }
7022 shift (@args);
7023 }
7025 my ($file, $primary, @prefix) = @args;
7027 # Now that configure substitutions are allowed in where_HOW
7028 # variables, it is an error to actually define the primary. We
7029 # allow `JAVA', as it is customarily used to mean the Java
7030 # interpreter. This is but one of several Java hacks. Similarly,
7031 # `PYTHON' is customarily used to mean the Python interpreter.
7032 reject_var $primary, "`$primary' is an anachronism"
7033 unless $primary eq 'JAVA' || $primary eq 'PYTHON';
7035 # Get the prefixes which are valid and actually used.
7036 @prefix = am_primary_prefixes ($primary, $can_dist, @prefix);
7038 # If a primary includes a configure substitution, then the EXTRA_
7039 # form is required. Otherwise we can't properly do our job.
7040 my $require_extra;
7042 my @used = ();
7043 my @result = ();
7045 foreach my $X (@prefix)
7046 {
7047 my $nodir_name = $X;
7048 my $one_name = $X . '_' . $primary;
7049 my $one_var = var $one_name;
7051 my $strip_subdir = 1;
7052 # If subdir prefix should be preserved, do so.
7053 if ($nodir_name =~ /^nobase_/)
7054 {
7055 $strip_subdir = 0;
7056 $nodir_name =~ s/^nobase_//;
7057 }
7059 # If files should be distributed, do so.
7060 my $dist_p = 0;
7061 if ($can_dist)
7062 {
7063 $dist_p = (($default_dist && $nodir_name !~ /^nodist_/)
7064 || (! $default_dist && $nodir_name =~ /^dist_/));
7065 $nodir_name =~ s/^(dist|nodist)_//;
7066 }
7069 # Use the location of the currently processed variable.
7070 # We are not processing a particular condition, so pick the first
7071 # available.
7072 my $tmpcond = $one_var->conditions->one_cond;
7073 my $where = $one_var->rdef ($tmpcond)->location->clone;
7075 # Append actual contents of where_PRIMARY variable to
7076 # @result, skipping @substitutions@.
7077 foreach my $locvals ($one_var->value_as_list_recursive (location => 1))
7078 {
7079 my ($loc, $value) = @$locvals;
7080 # Skip configure substitutions.
7081 if ($value =~ /^\@.*\@$/)
7082 {
7083 if ($nodir_name eq 'EXTRA')
7084 {
7085 error ($where,
7086 "`$one_name' contains configure substitution, "
7087 . "but shouldn't");
7088 }
7089 # Check here to make sure variables defined in
7090 # configure.ac do not imply that EXTRA_PRIMARY
7091 # must be defined.
7092 elsif (! defined $configure_vars{$one_name})
7093 {
7094 $require_extra = $one_name
7095 if $do_require;
7096 }
7097 }
7098 else
7099 {
7100 push (@result, $locvals);
7101 }
7102 }
7103 # A blatant hack: we rewrite each _PROGRAMS primary to include
7104 # EXEEXT.
7105 append_exeext { 1 } $one_name
7106 if $primary eq 'PROGRAMS';
7107 # "EXTRA" shouldn't be used when generating clean targets,
7108 # all, or install targets. We used to warn if EXTRA_FOO was
7109 # defined uselessly, but this was annoying.
7110 next
7111 if $nodir_name eq 'EXTRA';
7113 if ($nodir_name eq 'check')
7114 {
7115 push (@check, '$(' . $one_name . ')');
7116 }
7117 else
7118 {
7119 push (@used, '$(' . $one_name . ')');
7120 }
7122 # Is this to be installed?
7123 my $install_p = $nodir_name ne 'noinst' && $nodir_name ne 'check';
7125 # If so, with install-exec? (or install-data?).
7126 my $exec_p = ($nodir_name =~ /$EXEC_DIR_PATTERN/o);
7128 my $check_options_p = $install_p && !! option 'std-options';
7130 # Use the location of the currently processed variable as context.
7131 $where->push_context ("while processing `$one_name'");
7133 # The variable containing all file to distribute.
7134 my $distvar = "\$($one_name)";
7135 $distvar = shadow_unconditionally ($one_name, $where)
7136 if ($dist_p && $one_var->has_conditional_contents);
7138 # Singular form of $PRIMARY.
7139 (my $one_primary = $primary) =~ s/S$//;
7140 $output_rules .= &file_contents ($file, $where,
7141 PRIMARY => $primary,
7142 ONE_PRIMARY => $one_primary,
7143 DIR => $X,
7144 NDIR => $nodir_name,
7145 BASE => $strip_subdir,
7147 EXEC => $exec_p,
7148 INSTALL => $install_p,
7149 DIST => $dist_p,
7150 DISTVAR => $distvar,
7151 'CK-OPTS' => $check_options_p);
7152 }
7154 # The JAVA variable is used as the name of the Java interpreter.
7155 # The PYTHON variable is used as the name of the Python interpreter.
7156 if (@used && $primary ne 'JAVA' && $primary ne 'PYTHON')
7157 {
7158 # Define it.
7159 define_pretty_variable ($primary, TRUE, INTERNAL, @used);
7160 $output_vars .= "\n";
7161 }
7163 err_var ($require_extra,
7164 "`$require_extra' contains configure substitution,\n"
7165 . "but `EXTRA_$primary' not defined")
7166 if ($require_extra && ! var ('EXTRA_' . $primary));
7168 # Push here because PRIMARY might be configure time determined.
7169 push (@all, '$(' . $primary . ')')
7170 if @used && $primary ne 'JAVA' && $primary ne 'PYTHON';
7172 # Make the result unique. This lets the user use conditionals in
7173 # a natural way, but still lets us program lazily -- we don't have
7174 # to worry about handling a particular object more than once.
7175 # We will keep only one location per object.
7176 my %result = ();
7177 for my $pair (@result)
7178 {
7179 my ($loc, $val) = @$pair;
7180 $result{$val} = $loc;
7181 }
7182 my @l = sort keys %result;
7183 return map { [$result{$_}->clone, $_] } @l;
7184 }
7187 ################################################################
7189 # Each key in this hash is the name of a directory holding a
7190 # Makefile.in. These variables are local to `is_make_dir'.
7191 my %make_dirs = ();
7192 my $make_dirs_set = 0;
7194 sub is_make_dir
7195 {
7196 my ($dir) = @_;
7197 if (! $make_dirs_set)
7198 {
7199 foreach my $iter (@configure_input_files)
7200 {
7201 $make_dirs{dirname ($iter)} = 1;
7202 }
7203 # We also want to notice Makefile.in's.
7204 foreach my $iter (@other_input_files)
7205 {
7206 if ($iter =~ /Makefile\.in$/)
7207 {
7208 $make_dirs{dirname ($iter)} = 1;
7209 }
7210 }
7211 $make_dirs_set = 1;
7212 }
7213 return defined $make_dirs{$dir};
7214 }
7216 ################################################################
7218 # Find the aux dir. This should match the algorithm used by
7219 # ./configure. (See the Autoconf documentation for for
7220 # AC_CONFIG_AUX_DIR.)
7221 sub locate_aux_dir ()
7222 {
7223 if (! $config_aux_dir_set_in_configure_ac)
7224 {
7225 # The default auxiliary directory is the first
7226 # of ., .., or ../.. that contains install-sh.
7227 # Assume . if install-sh doesn't exist yet.
7228 for my $dir (qw (. .. ../..))
7229 {
7230 if (-f "$dir/install-sh")
7231 {
7232 $config_aux_dir = $dir;
7233 last;
7234 }
7235 }
7236 $config_aux_dir = '.' unless $config_aux_dir;
7237 }
7238 # Avoid unsightly '/.'s.
7239 $am_config_aux_dir =
7240 '$(top_srcdir)' . ($config_aux_dir eq '.' ? "" : "/$config_aux_dir");
7241 $am_config_aux_dir =~ s,/*$,,;
7242 }
7245 # &maybe_push_required_file ($DIR, $FILE, $FULLFILE)
7246 # --------------------------------------------------
7247 # See if we want to push this file onto dist_common. This function
7248 # encodes the rules for deciding when to do so.
7249 sub maybe_push_required_file
7250 {
7251 my ($dir, $file, $fullfile) = @_;
7253 if ($dir eq $relative_dir)
7254 {
7255 push_dist_common ($file);
7256 return 1;
7257 }
7258 elsif ($relative_dir eq '.' && ! &is_make_dir ($dir))
7259 {
7260 # If we are doing the topmost directory, and the file is in a
7261 # subdir which does not have a Makefile, then we distribute it
7262 # here.
7264 # If a required file is above the source tree, it is important
7265 # to prefix it with `$(srcdir)' so that no VPATH search is
7266 # performed. Otherwise problems occur with Make implementations
7267 # that rewrite and simplify rules whose dependencies are found in a
7268 # VPATH location. Here is an example with OSF1/Tru64 Make.
7269 #
7270 # % cat Makefile
7271 # VPATH = sub
7272 # distdir: ../a
7273 # echo ../a
7274 # % ls
7275 # Makefile a
7276 # % make
7277 # echo a
7278 # a
7279 #
7280 # Dependency `../a' was found in `sub/../a', but this make
7281 # implementation simplified it as `a'. (Note that the sub/
7282 # directory does not even exist.)
7283 #
7284 # This kind of VPATH rewriting seems hard to cancel. The
7285 # distdir.am hack against VPATH rewriting works only when no
7286 # simplification is done, i.e., for dependencies which are in
7287 # subdirectories, not in enclosing directories. Hence, in
7288 # the latter case we use a full path to make sure no VPATH
7289 # search occurs.
7290 $fullfile = '$(srcdir)/' . $fullfile
7291 if $dir =~ m,^\.\.(?:$|/),;
7293 push_dist_common ($fullfile);
7294 return 1;
7295 }
7296 return 0;
7297 }
7300 # If a file name appears as a key in this hash, then it has already
7301 # been checked for. This allows us not to report the same error more
7302 # than once.
7303 my %required_file_not_found = ();
7305 # &require_file_internal ($WHERE, $MYSTRICT, $DIRECTORY, @FILES)
7306 # --------------------------------------------------------------
7307 # Verify that the file must exist in $DIRECTORY, or install it.
7308 # $MYSTRICT is the strictness level at which this file becomes required.
7309 sub require_file_internal ($$$@)
7310 {
7311 my ($where, $mystrict, $dir, @files) = @_;
7313 foreach my $file (@files)
7314 {
7315 my $fullfile = "$dir/$file";
7316 my $found_it = 0;
7317 my $dangling_sym = 0;
7319 if (-l $fullfile && ! -f $fullfile)
7320 {
7321 $dangling_sym = 1;
7322 }
7323 elsif (dir_has_case_matching_file ($dir, $file))
7324 {
7325 $found_it = 1;
7326 maybe_push_required_file ($dir, $file, $fullfile);
7327 }
7329 # `--force-missing' only has an effect if `--add-missing' is
7330 # specified.
7331 if ($found_it && (! $add_missing || ! $force_missing))
7332 {
7333 next;
7334 }
7335 else
7336 {
7337 # If we've already looked for it, we're done. You might
7338 # wonder why we don't do this before searching for the
7339 # file. If we do that, then something like
7340 # AC_OUTPUT(subdir/foo foo) will fail to put foo.in into
7341 # DIST_COMMON.
7342 if (! $found_it)
7343 {
7344 next if defined $required_file_not_found{$fullfile};
7345 $required_file_not_found{$fullfile} = 1;
7346 }
7348 if ($strictness >= $mystrict)
7349 {
7350 if ($dangling_sym && $add_missing)
7351 {
7352 unlink ($fullfile);
7353 }
7355 my $trailer = '';
7356 my $suppress = 0;
7358 # Only install missing files according to our desired
7359 # strictness level.
7360 my $message = "required file `$fullfile' not found";
7361 if ($add_missing)
7362 {
7363 if (-f "$libdir/$file")
7364 {
7365 $suppress = 1;
7367 # Install the missing file. Symlink if we
7368 # can, copy if we must. Note: delete the file
7369 # first, in case it is a dangling symlink.
7370 $message = "installing `$fullfile'";
7371 # Windows Perl will hang if we try to delete a
7372 # file that doesn't exist.
7373 unlink ($fullfile) if -f $fullfile;
7374 if ($symlink_exists && ! $copy_missing)
7375 {
7376 if (! symlink ("$libdir/$file", $fullfile))
7377 {
7378 $suppress = 0;
7379 $trailer = "; error while making link: $!";
7380 }
7381 }
7382 elsif (system ('cp', "$libdir/$file", $fullfile))
7383 {
7384 $suppress = 0;
7385 $trailer = "\n error while copying";
7386 }
7387 reset_dir_cache ($dir);
7388 }
7390 if (! maybe_push_required_file (dirname ($fullfile),
7391 $file, $fullfile))
7392 {
7393 if (! $found_it && ! $automake_will_process_aux_dir)
7394 {
7395 # We have added the file but could not push it
7396 # into DIST_COMMON, probably because this is
7397 # an auxiliary file and we are not processing
7398 # the top level Makefile. Furthermore Automake
7399 # hasn't been asked to create the Makefile.in
7400 # that distribute the aux dir files.
7401 error ($where, 'Please make a full run of automake'
7402 . " so $fullfile gets distributed.");
7403 }
7404 }
7405 }
7406 else
7407 {
7408 $trailer = "\n `automake --add-missing' can install `$file'"
7409 if -f "$libdir/$file";
7410 }
7412 # If --force-missing was specified, and we have
7413 # actually found the file, then do nothing.
7414 next
7415 if $found_it && $force_missing;
7417 # If we couldn't install the file, but it is a target in
7418 # the Makefile, don't print anything. This allows files
7419 # like README, AUTHORS, or THANKS to be generated.
7420 next
7421 if !$suppress && rule $file;
7423 msg ($suppress ? 'note' : 'error', $where, "$message$trailer");
7424 }
7425 }
7426 }
7427 }
7429 # &require_file ($WHERE, $MYSTRICT, @FILES)
7430 # -----------------------------------------
7431 sub require_file ($$@)
7432 {
7433 my ($where, $mystrict, @files) = @_;
7434 require_file_internal ($where, $mystrict, $relative_dir, @files);
7435 }
7437 # &require_file_with_macro ($COND, $MACRO, $MYSTRICT, @FILES)
7438 # -----------------------------------------------------------
7439 sub require_file_with_macro ($$$@)
7440 {
7441 my ($cond, $macro, $mystrict, @files) = @_;
7442 $macro = rvar ($macro) unless ref $macro;
7443 require_file ($macro->rdef ($cond)->location, $mystrict, @files);
7444 }
7446 # &require_libsource_with_macro ($COND, $MACRO, $MYSTRICT, @FILES)
7447 # ----------------------------------------------------------------
7448 # Require an AC_LIBSOURCEd file. If AC_CONFIG_LIBOBJ_DIR was called, it
7449 # must be in that directory. Otherwise expect it in the current directory.
7450 sub require_libsource_with_macro ($$$@)
7451 {
7452 my ($cond, $macro, $mystrict, @files) = @_;
7453 $macro = rvar ($macro) unless ref $macro;
7454 if ($config_libobj_dir)
7455 {
7456 require_file_internal ($macro->rdef ($cond)->location, $mystrict,
7457 $config_libobj_dir, @files);
7458 }
7459 else
7460 {
7461 require_file ($macro->rdef ($cond)->location, $mystrict, @files);
7462 }
7463 }
7465 # &require_conf_file ($WHERE, $MYSTRICT, @FILES)
7466 # ----------------------------------------------
7467 # Looks in configuration path, as specified by AC_CONFIG_AUX_DIR.
7468 sub require_conf_file ($$@)
7469 {
7470 my ($where, $mystrict, @files) = @_;
7471 require_file_internal ($where, $mystrict, $config_aux_dir, @files);
7472 }
7475 # &require_conf_file_with_macro ($COND, $MACRO, $MYSTRICT, @FILES)
7476 # ----------------------------------------------------------------
7477 sub require_conf_file_with_macro ($$$@)
7478 {
7479 my ($cond, $macro, $mystrict, @files) = @_;
7480 require_conf_file (rvar ($macro)->rdef ($cond)->location,
7481 $mystrict, @files);
7482 }
7484 ################################################################
7486 # &require_build_directory ($DIRECTORY)
7487 # ------------------------------------
7488 # Emit rules to create $DIRECTORY if needed, and return
7489 # the file that any target requiring this directory should be made
7490 # dependent upon.
7491 # We don't want to emit the rule twice, and want to reuse it
7492 # for directories with equivalent names (e.g., `foo/bar' and `./foo//bar').
7493 sub require_build_directory ($)
7494 {
7495 my $directory = shift;
7497 return $directory_map{$directory} if exists $directory_map{$directory};
7499 my $cdir = File::Spec->canonpath ($directory);
7501 if (exists $directory_map{$cdir})
7502 {
7503 my $stamp = $directory_map{$cdir};
7504 $directory_map{$directory} = $stamp;
7505 return $stamp;
7506 }
7508 my $dirstamp = "$cdir/\$(am__dirstamp)";
7510 $directory_map{$directory} = $dirstamp;
7511 $directory_map{$cdir} = $dirstamp;
7513 # Set a variable for the dirstamp basename.
7514 define_pretty_variable ('am__dirstamp', TRUE, INTERNAL,
7515 '$(am__leading_dot)dirstamp');
7517 # Directory must be removed by `make distclean'.
7518 $clean_files{$dirstamp} = DIST_CLEAN;
7520 $output_rules .= ("$dirstamp:\n"
7521 . "\t\@\$(MKDIR_P) $directory\n"
7522 . "\t\@: > $dirstamp\n");
7524 return $dirstamp;
7525 }
7527 # &require_build_directory_maybe ($FILE)
7528 # --------------------------------------
7529 # If $FILE lies in a subdirectory, emit a rule to create this
7530 # directory and return the file that $FILE should be made
7531 # dependent upon. Otherwise, just return the empty string.
7532 sub require_build_directory_maybe ($)
7533 {
7534 my $file = shift;
7535 my $directory = dirname ($file);
7537 if ($directory ne '.')
7538 {
7539 return require_build_directory ($directory);
7540 }
7541 else
7542 {
7543 return '';
7544 }
7545 }
7547 ################################################################
7549 # Push a list of files onto dist_common.
7550 sub push_dist_common
7551 {
7552 prog_error "push_dist_common run after handle_dist"
7553 if $handle_dist_run;
7554 Automake::Variable::define ('DIST_COMMON', VAR_AUTOMAKE, '+', TRUE, "@_",
7555 '', INTERNAL, VAR_PRETTY);
7556 }
7559 ################################################################
7561 # generate_makefile ($MAKEFILE_AM, $MAKEFILE_IN)
7562 # ----------------------------------------------
7563 # Generate a Makefile.in given the name of the corresponding Makefile and
7564 # the name of the file output by config.status.
7565 sub generate_makefile ($$)
7566 {
7567 my ($makefile_am, $makefile_in) = @_;
7569 # Reset all the Makefile.am related variables.
7570 initialize_per_input;
7572 # AUTOMAKE_OPTIONS can contains -W flags to disable or enable
7573 # warnings for this file. So hold any warning issued before
7574 # we have processed AUTOMAKE_OPTIONS.
7575 buffer_messages ('warning');
7577 # Name of input file ("Makefile.am") and output file
7578 # ("Makefile.in"). These have no directory components.
7579 $am_file_name = basename ($makefile_am);
7580 $in_file_name = basename ($makefile_in);
7582 # $OUTPUT is encoded. If it contains a ":" then the first element
7583 # is the real output file, and all remaining elements are input
7584 # files. We don't scan or otherwise deal with these input files,
7585 # other than to mark them as dependencies. See
7586 # &scan_autoconf_files for details.
7587 my ($makefile, @inputs) = split (/:/, $output_files{$makefile_in});
7589 $relative_dir = dirname ($makefile);
7590 $am_relative_dir = dirname ($makefile_am);
7591 $topsrcdir = backname ($relative_dir);
7593 read_main_am_file ($makefile_am);
7594 if (handle_options)
7595 {
7596 # Process buffered warnings.
7597 flush_messages;
7598 # Fatal error. Just return, so we can continue with next file.
7599 return;
7600 }
7601 # Process buffered warnings.
7602 flush_messages;
7604 # There are a few install-related variables that you should not define.
7605 foreach my $var ('PRE_INSTALL', 'POST_INSTALL', 'NORMAL_INSTALL')
7606 {
7607 my $v = var $var;
7608 if ($v)
7609 {
7610 my $def = $v->def (TRUE);
7611 prog_error "$var not defined in condition TRUE"
7612 unless $def;
7613 reject_var $var, "`$var' should not be defined"
7614 if $def->owner != VAR_AUTOMAKE;
7615 }
7616 }
7618 # Catch some obsolete variables.
7619 msg_var ('obsolete', 'INCLUDES',
7620 "`INCLUDES' is the old name for `AM_CPPFLAGS' (or `*_CPPFLAGS')")
7621 if var ('INCLUDES');
7623 # Must do this after reading .am file.
7624 define_variable ('subdir', $relative_dir, INTERNAL);
7626 # If DIST_SUBDIRS is defined, make sure SUBDIRS is, so that
7627 # recursive rules are enabled.
7628 define_pretty_variable ('SUBDIRS', TRUE, INTERNAL, '')
7629 if var 'DIST_SUBDIRS' && ! var 'SUBDIRS';
7631 # Check first, because we might modify some state.
7632 check_cygnus;
7633 check_gnu_standards;
7634 check_gnits_standards;
7636 handle_configure ($makefile_am, $makefile_in, $makefile, @inputs);
7637 handle_gettext;
7638 handle_libraries;
7639 handle_ltlibraries;
7640 handle_programs;
7641 handle_scripts;
7643 # These must be run after all the sources are scanned. They
7644 # use variables defined by &handle_libraries, &handle_ltlibraries,
7645 # or &handle_programs.
7646 handle_compile;
7647 handle_languages;
7648 handle_libtool;
7650 # Variables used by distdir.am and tags.am.
7651 define_pretty_variable ('SOURCES', TRUE, INTERNAL, @sources);
7652 if (! option 'no-dist')
7653 {
7654 define_pretty_variable ('DIST_SOURCES', TRUE, INTERNAL, @dist_sources);
7655 }
7657 handle_multilib;
7658 handle_texinfo;
7659 handle_emacs_lisp;
7660 handle_python;
7661 handle_java;
7662 handle_man_pages;
7663 handle_data;
7664 handle_headers;
7665 handle_subdirs;
7666 handle_tags;
7667 handle_minor_options;
7668 # Must come after handle_programs so that %known_programs is up-to-date.
7669 handle_tests;
7671 # This must come after most other rules.
7672 handle_dist;
7674 handle_footer;
7675 do_check_merge_target;
7676 handle_all ($makefile);
7678 # FIXME: Gross!
7679 if (var ('lib_LTLIBRARIES') && var ('bin_PROGRAMS'))
7680 {
7681 $output_rules .= "install-binPROGRAMS: install-libLTLIBRARIES\n\n";
7682 }
7683 if (var ('nobase_lib_LTLIBRARIES') && var ('bin_PROGRAMS'))
7684 {
7685 $output_rules .= "install-binPROGRAMS: install-nobase_libLTLIBRARIES\n\n";
7686 }
7688 handle_install;
7689 handle_clean ($makefile);
7690 handle_factored_dependencies;
7692 # Comes last, because all the above procedures may have
7693 # defined or overridden variables.
7694 $output_vars .= output_variables;
7696 check_typos;
7698 my ($out_file) = $output_directory . '/' . $makefile_in;
7700 if ($exit_code != 0)
7701 {
7702 verb "not writing $out_file because of earlier errors";
7703 return;
7704 }
7706 if (! -d ($output_directory . '/' . $am_relative_dir))
7707 {
7708 mkdir ($output_directory . '/' . $am_relative_dir, 0755);
7709 }
7711 # We make sure that `all:' is the first target.
7712 my $output =
7713 "$output_vars$output_all$output_header$output_rules$output_trailer";
7715 # Decide whether we must update the output file or not.
7716 # We have to update in the following situations.
7717 # * $force_generation is set.
7718 # * any of the output dependencies is younger than the output
7719 # * the contents of the output is different (this can happen
7720 # if the project has been populated with a file listed in
7721 # @common_files since the last run).
7722 # Output's dependencies are split in two sets:
7723 # * dependencies which are also configure dependencies
7724 # These do not change between each Makefile.am
7725 # * other dependencies, specific to the Makefile.am being processed
7726 # (such as the Makefile.am itself, or any Makefile fragment
7727 # it includes).
7728 my $timestamp = mtime $out_file;
7729 if (! $force_generation
7730 && $configure_deps_greatest_timestamp < $timestamp
7731 && $output_deps_greatest_timestamp < $timestamp
7732 && $output eq contents ($out_file))
7733 {
7734 verb "$out_file unchanged";
7735 # No need to update.
7736 return;
7737 }
7739 if (-e $out_file)
7740 {
7741 unlink ($out_file)
7742 or fatal "cannot remove $out_file: $!\n";
7743 }
7745 my $gm_file = new Automake::XFile "> $out_file";
7746 verb "creating $out_file";
7747 print $gm_file $output;
7748 }
7750 ################################################################
7755 ################################################################
7757 # Print usage information.
7758 sub usage ()
7759 {
7760 print "Usage: $0 [OPTION] ... [Makefile]...
7762 Generate Makefile.in for configure from Makefile.am.
7764 Operation modes:
7765 --help print this help, then exit
7766 --version print version number, then exit
7767 -v, --verbose verbosely list files processed
7768 --no-force only update Makefile.in's that are out of date
7769 -W, --warnings=CATEGORY report the warnings falling in CATEGORY
7771 Dependency tracking:
7772 -i, --ignore-deps disable dependency tracking code
7773 --include-deps enable dependency tracking code
7775 Flavors:
7776 --cygnus assume program is part of Cygnus-style tree
7777 --foreign set strictness to foreign
7778 --gnits set strictness to gnits
7779 --gnu set strictness to gnu
7781 Library files:
7782 -a, --add-missing add missing standard files to package
7783 --libdir=DIR directory storing library files
7784 -c, --copy with -a, copy missing files (default is symlink)
7785 -f, --force-missing force update of standard files
7787 ";
7788 Automake::ChannelDefs::usage;
7790 my ($last, @lcomm);
7791 $last = '';
7792 foreach my $iter (sort ((@common_files, @common_sometimes)))
7793 {
7794 push (@lcomm, $iter) unless $iter eq $last;
7795 $last = $iter;
7796 }
7798 my @four;
7799 print "\nFiles which are automatically distributed, if found:\n";
7800 format USAGE_FORMAT =
7801 @<<<<<<<<<<<<<<<< @<<<<<<<<<<<<<<<< @<<<<<<<<<<<<<<<< @<<<<<<<<<<<<<<<<
7802 $four[0], $four[1], $four[2], $four[3]
7803 .
7804 $~ = "USAGE_FORMAT";
7806 my $cols = 4;
7807 my $rows = int(@lcomm / $cols);
7808 my $rest = @lcomm % $cols;
7810 if ($rest)
7811 {
7812 $rows++;
7813 }
7814 else
7815 {
7816 $rest = $cols;
7817 }
7819 for (my $y = 0; $y < $rows; $y++)
7820 {
7821 @four = ("", "", "", "");
7822 for (my $x = 0; $x < $cols; $x++)
7823 {
7824 last if $y + 1 == $rows && $x == $rest;
7826 my $idx = (($x > $rest)
7827 ? ($rows * $rest + ($rows - 1) * ($x - $rest))
7828 : ($rows * $x));
7830 $idx += $y;
7831 $four[$x] = $lcomm[$idx];
7832 }
7833 write;
7834 }
7836 print "\nReport bugs to <bug-automake\@gnu.org>.\n";
7838 # --help always returns 0 per GNU standards.
7839 exit 0;
7840 }
7843 # &version ()
7844 # -----------
7845 # Print version information
7846 sub version ()
7847 {
7848 print <<EOF;
7849 automake (GNU $PACKAGE) $VERSION
7850 Copyright (C) 2008 Free Software Foundation, Inc.
7851 License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html>
7852 This is free software: you are free to change and redistribute it.
7853 There is NO WARRANTY, to the extent permitted by law.
7855 Written by Tom Tromey <tromey\@redhat.com>
7856 and Alexandre Duret-Lutz <adl\@gnu.org>.
7857 EOF
7858 # --version always returns 0 per GNU standards.
7859 exit 0;
7860 }
7862 ################################################################
7864 # Parse command line.
7865 sub parse_arguments ()
7866 {
7867 # Start off as gnu.
7868 set_strictness ('gnu');
7870 my $cli_where = new Automake::Location;
7871 my %cli_options =
7872 (
7873 'libdir=s' => \$libdir,
7874 'gnu' => sub { set_strictness ('gnu'); },
7875 'gnits' => sub { set_strictness ('gnits'); },
7876 'cygnus' => sub { set_global_option ('cygnus', $cli_where); },
7877 'foreign' => sub { set_strictness ('foreign'); },
7878 'include-deps' => sub { unset_global_option ('no-dependencies'); },
7879 'i|ignore-deps' => sub { set_global_option ('no-dependencies',
7880 $cli_where); },
7881 'no-force' => sub { $force_generation = 0; },
7882 'f|force-missing' => \$force_missing,
7883 'o|output-dir=s' => \$output_directory,
7884 'a|add-missing' => \$add_missing,
7885 'c|copy' => \$copy_missing,
7886 'v|verbose' => sub { setup_channel 'verb', silent => 0; },
7887 'W|warnings=s' => \&parse_warnings,
7888 # These long options (--Werror and --Wno-error) for backward
7889 # compatibility. Use -Werror and -Wno-error today.
7890 'Werror' => sub { parse_warnings 'W', 'error'; },
7891 'Wno-error' => sub { parse_warnings 'W', 'no-error'; },
7892 );
7893 use Getopt::Long;
7894 Getopt::Long::config ("bundling", "pass_through");
7896 # See if --version or --help is used. We want to process these before
7897 # anything else because the GNU Coding Standards require us to
7898 # `exit 0' after processing these options, and we can't guarantee this
7899 # if we treat other options first. (Handling other options first
7900 # could produce error diagnostics, and in this condition it is
7901 # confusing if Automake does `exit 0'.)
7902 my %cli_options_1st_pass =
7903 (
7904 'version' => \&version,
7905 'help' => \&usage,
7906 # Recognize all other options (and their arguments) but do nothing.
7907 map { $_ => sub {} } (keys %cli_options)
7908 );
7909 my @ARGV_backup = @ARGV;
7910 Getopt::Long::GetOptions %cli_options_1st_pass
7911 or exit 1;
7912 @ARGV = @ARGV_backup;
7914 # Now *really* process the options. This time we know that --help
7915 # and --version are not present, but we specify them nonetheless so
7916 # that ambiguous abbreviation are diagnosed.
7917 Getopt::Long::GetOptions %cli_options, 'version' => sub {}, 'help' => sub {}
7918 or exit 1;
7920 if (defined $output_directory)
7921 {
7922 msg 'obsolete', "`--output-dir' is deprecated\n";
7923 }
7924 else
7925 {
7926 # In the next release we'll remove this entirely.
7927 $output_directory = '.';
7928 }
7930 return unless @ARGV;
7932 if ($ARGV[0] =~ /^-./)
7933 {
7934 my %argopts;
7935 for my $k (keys %cli_options)
7936 {
7937 if ($k =~ /(.*)=s$/)
7938 {
7939 map { $argopts{(length ($_) == 1)
7940 ? "-$_" : "--$_" } = 1; } (split (/\|/, $1));
7941 }
7942 }
7943 if ($ARGV[0] eq '--')
7944 {
7945 shift @ARGV;
7946 }
7947 elsif (exists $argopts{$ARGV[0]})
7948 {
7949 fatal ("option `$ARGV[0]' requires an argument\n"
7950 . "Try `$0 --help' for more information.");
7951 }
7952 else
7953 {
7954 fatal ("unrecognized option `$ARGV[0]'.\n"
7955 . "Try `$0 --help' for more information.");
7956 }
7957 }
7959 my $errspec = 0;
7960 foreach my $arg (@ARGV)
7961 {
7962 fatal ("empty argument\nTry `$0 --help' for more information.")
7963 if ($arg eq '');
7965 # Handle $local:$input syntax.
7966 my ($local, @rest) = split (/:/, $arg);
7967 @rest = ("$local.in",) unless @rest;
7968 my $input = locate_am @rest;
7969 if ($input)
7970 {
7971 push @input_files, $input;
7972 $output_files{$input} = join (':', ($local, @rest));
7973 }
7974 else
7975 {
7976 error "no Automake input file found for `$arg'";
7977 $errspec = 1;
7978 }
7979 }
7980 fatal "no input file found among supplied arguments"
7981 if $errspec && ! @input_files;
7982 }
7984 ################################################################
7986 # Parse the WARNINGS environment variable.
7987 parse_WARNINGS;
7989 # Parse command line.
7990 parse_arguments;
7992 $configure_ac = require_configure_ac;
7994 # Do configure.ac scan only once.
7995 scan_autoconf_files;
7997 if (! @input_files)
7998 {
7999 my $msg = '';
8000 $msg = "\nDid you forget AC_CONFIG_FILES([Makefile]) in $configure_ac?"
8001 if -f 'Makefile.am';
8002 fatal ("no `Makefile.am' found for any configure output$msg");
8003 }
8005 # Now do all the work on each file.
8006 foreach my $file (@input_files)
8007 {
8008 ($am_file = $file) =~ s/\.in$//;
8009 if (! -f ($am_file . '.am'))
8010 {
8011 error "`$am_file.am' does not exist";
8012 }
8013 else
8014 {
8015 # Any warning setting now local to this Makefile.am.
8016 dup_channel_setup;
8018 generate_makefile ($am_file . '.am', $file);
8020 # Back out any warning setting.
8021 drop_channel_setup;
8022 }
8023 }
8025 exit $exit_code;
8028 ### Setup "GNU" style for perl-mode and cperl-mode.
8029 ## Local Variables:
8030 ## perl-indent-level: 2
8031 ## perl-continued-statement-offset: 2
8032 ## perl-continued-brace-offset: 0
8033 ## perl-brace-offset: 0
8034 ## perl-brace-imaginary-offset: 0
8035 ## perl-label-offset: -2
8036 ## cperl-indent-level: 2
8037 ## cperl-brace-offset: 0
8038 ## cperl-continued-brace-offset: 0
8039 ## cperl-label-offset: -2
8040 ## cperl-extra-newline-before-brace: t
8041 ## cperl-merge-trailing-else: nil
8042 ## cperl-continued-statement-offset: 2
8043 ## End: