| blob | ee1391fa4bf33e11c861a3b738031f06dbfd1122 |
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 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, write to the Free Software
24 # Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
25 # 02110-1301, USA.
27 # Originally written by David Mackenzie <djm@gnu.ai.mit.edu>.
28 # Perl reimplementation by Tom Tromey <tromey@redhat.com>, and
29 # Alexandre Duret-Lutz <adl@gnu.org>.
31 package Language;
33 BEGIN
34 {
35 my $perllibdir = $ENV{'perllibdir'} || '@datadir@/@PACKAGE@-@APIVERSION@';
36 unshift @INC, (split '@PATH_SEPARATOR@', $perllibdir);
38 # Override SHELL. This is required on DJGPP so that system() uses
39 # bash, not COMMAND.COM which doesn't quote arguments properly.
40 # Other systems aren't expected to use $SHELL when Automake
41 # runs, but it should be safe to drop the `if DJGPP' guard if
42 # it turns up other systems need the same thing. After all,
43 # if SHELL is used, ./configure's SHELL is always better than
44 # the user's SHELL (which may be something like tcsh).
45 $ENV{'SHELL'} = '@SHELL@' if exists $ENV{'DJGPP'};
46 }
48 use Automake::Struct;
49 struct (# Short name of the language (c, f77...).
50 'name' => "\$",
51 # Nice name of the language (C, Fortran 77...).
52 'Name' => "\$",
54 # List of configure variables which must be defined.
55 'config_vars' => '@',
57 'ansi' => "\$",
58 # `pure' is `1' or `'. A `pure' language is one where, if
59 # all the files in a directory are of that language, then we
60 # do not require the C compiler or any code to call it.
61 'pure' => "\$",
63 'autodep' => "\$",
65 # Name of the compiling variable (COMPILE).
66 'compiler' => "\$",
67 # Content of the compiling variable.
68 'compile' => "\$",
69 # Flag to require compilation without linking (-c).
70 'compile_flag' => "\$",
71 'extensions' => '@',
72 # A subroutine to compute a list of possible extensions of
73 # the product given the input extensions.
74 # (defaults to a subroutine which returns ('.$(OBJEXT)', '.lo'))
75 'output_extensions' => "\$",
76 # A list of flag variables used in 'compile'.
77 # (defaults to [])
78 'flags' => "@",
80 # Any tag to pass to libtool while compiling.
81 'libtool_tag' => "\$",
83 # The file to use when generating rules for this language.
84 # The default is 'depend2'.
85 'rule_file' => "\$",
87 # Name of the linking variable (LINK).
88 'linker' => "\$",
89 # Content of the linking variable.
90 'link' => "\$",
92 # Name of the linker variable (LD).
93 'lder' => "\$",
94 # Content of the linker variable ($(CC)).
95 'ld' => "\$",
97 # Flag to specify the output file (-o).
98 'output_flag' => "\$",
99 '_finish' => "\$",
101 # This is a subroutine which is called whenever we finally
102 # determine the context in which a source file will be
103 # compiled.
104 '_target_hook' => "\$",
106 # If TRUE, nodist_ sources will be compiled using specific rules
107 # (i.e. not inference rules). The default is FALSE.
108 'nodist_specific' => "\$");
111 sub finish ($)
112 {
113 my ($self) = @_;
114 if (defined $self->_finish)
115 {
116 &{$self->_finish} ();
117 }
118 }
120 sub target_hook ($$$$%)
121 {
122 my ($self) = @_;
123 if (defined $self->_target_hook)
124 {
125 &{$self->_target_hook} (@_);
126 }
127 }
129 package Automake;
131 use strict;
132 use Automake::Config;
133 use Automake::General;
134 use Automake::XFile;
135 use Automake::Channels;
136 use Automake::ChannelDefs;
137 use Automake::Configure_ac;
138 use Automake::FileUtils;
139 use Automake::Location;
140 use Automake::Condition qw/TRUE FALSE/;
141 use Automake::DisjConditions;
142 use Automake::Options;
143 use Automake::Version;
144 use Automake::Variable;
145 use Automake::VarDef;
146 use Automake::Rule;
147 use Automake::RuleDef;
148 use Automake::Wrap 'makefile_wrap';
149 use File::Basename;
150 use File::Spec;
151 use Carp;
153 ## ----------- ##
154 ## Constants. ##
155 ## ----------- ##
157 # Some regular expressions. One reason to put them here is that it
158 # makes indentation work better in Emacs.
160 # Writing singled-quoted-$-terminated regexes is a pain because
161 # perl-mode thinks of $' as the ${'} variable (instead of a $ followed
162 # by a closing quote. Letting perl-mode think the quote is not closed
163 # leads to all sort of misindentations. On the other hand, defining
164 # regexes as double-quoted strings is far less readable. So usually
165 # we will write:
166 #
167 # $REGEX = '^regex_value' . "\$";
169 my $IGNORE_PATTERN = '^\s*##([^#\n].*)?\n';
170 my $WHITE_PATTERN = '^\s*' . "\$";
171 my $COMMENT_PATTERN = '^#';
172 my $TARGET_PATTERN='[$a-zA-Z0-9_.@%][-.a-zA-Z0-9_(){}/$+@%]*';
173 # A rule has three parts: a list of targets, a list of dependencies,
174 # and optionally actions.
175 my $RULE_PATTERN =
176 "^($TARGET_PATTERN(?:(?:\\\\\n|\\s)+$TARGET_PATTERN)*) *:([^=].*|)\$";
178 # Only recognize leading spaces, not leading tabs. If we recognize
179 # leading tabs here then we need to make the reader smarter, because
180 # otherwise it will think rules like `foo=bar; \' are errors.
181 my $ASSIGNMENT_PATTERN = '^ *([^ \t=:+]*)\s*([:+]?)=\s*(.*)' . "\$";
182 # This pattern recognizes a Gnits version id and sets $1 if the
183 # release is an alpha release. We also allow a suffix which can be
184 # used to extend the version number with a "fork" identifier.
185 my $GNITS_VERSION_PATTERN = '\d+\.\d+([a-z]|\.\d+)?(-[A-Za-z0-9]+)?';
187 my $IF_PATTERN = '^if\s+(!?)\s*([A-Za-z][A-Za-z0-9_]*)\s*(?:#.*)?' . "\$";
188 my $ELSE_PATTERN =
189 '^else(?:\s+(!?)\s*([A-Za-z][A-Za-z0-9_]*))?\s*(?:#.*)?' . "\$";
190 my $ENDIF_PATTERN =
191 '^endif(?:\s+(!?)\s*([A-Za-z][A-Za-z0-9_]*))?\s*(?:#.*)?' . "\$";
192 my $PATH_PATTERN = '(\w|[+/.-])+';
193 # This will pass through anything not of the prescribed form.
194 my $INCLUDE_PATTERN = ('^include\s+'
195 . '((\$\(top_srcdir\)/' . $PATH_PATTERN . ')'
196 . '|(\$\(srcdir\)/' . $PATH_PATTERN . ')'
197 . '|([^/\$]' . $PATH_PATTERN . '))\s*(#.*)?' . "\$");
199 # Match `-d' as a command-line argument in a string.
200 my $DASH_D_PATTERN = "(^|\\s)-d(\\s|\$)";
201 # Directories installed during 'install-exec' phase.
202 my $EXEC_DIR_PATTERN =
203 '^(?:bin|sbin|libexec|sysconf|localstate|lib|pkglib|.*exec.*)' . "\$";
205 # Values for AC_CANONICAL_*
206 use constant AC_CANONICAL_BUILD => 1;
207 use constant AC_CANONICAL_HOST => 2;
208 use constant AC_CANONICAL_TARGET => 3;
210 # Values indicating when something should be cleaned.
211 use constant MOSTLY_CLEAN => 0;
212 use constant CLEAN => 1;
213 use constant DIST_CLEAN => 2;
214 use constant MAINTAINER_CLEAN => 3;
216 # Libtool files.
217 my @libtool_files = qw(ltmain.sh config.guess config.sub);
218 # ltconfig appears here for compatibility with old versions of libtool.
219 my @libtool_sometimes = qw(ltconfig ltcf-c.sh ltcf-cxx.sh ltcf-gcj.sh);
221 # Commonly found files we look for and automatically include in
222 # DISTFILES.
223 my @common_files =
224 (qw(ABOUT-GNU ABOUT-NLS AUTHORS BACKLOG COPYING COPYING.DOC COPYING.LIB
225 COPYING.LESSER ChangeLog INSTALL NEWS README THANKS TODO
226 ansi2knr.1 ansi2knr.c compile config.guess config.rpath config.sub
227 depcomp elisp-comp install-sh libversion.in mdate-sh missing
228 mkinstalldirs py-compile texinfo.tex ylwrap),
229 @libtool_files, @libtool_sometimes);
231 # Commonly used files we auto-include, but only sometimes. This list
232 # is used for the --help output only.
233 my @common_sometimes =
234 qw(aclocal.m4 acconfig.h config.h.top config.h.bot configure
235 configure.ac configure.in stamp-vti);
237 # Standard directories from the GNU Coding Standards, and additional
238 # pkg* directories from Automake. Stored in a hash for fast member check.
239 my %standard_prefix =
240 map { $_ => 1 } (qw(bin data dataroot dvi exec html include info
241 lib libexec lisp localstate man man1 man2 man3
242 man4 man5 man6 man7 man8 man9 oldinclude pdf
243 pkgdatadir pkgincludedir pkglibdir pkglibexecdir
244 ps sbin sharedstate sysconf));
246 # Copyright on generated Makefile.ins.
247 my $gen_copyright = "\
248 # Copyright (C) 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002,
249 # 2003, 2004, 2005, 2006, 2007 Free Software Foundation, Inc.
250 # This Makefile.in is free software; the Free Software Foundation
251 # gives unlimited permission to copy and/or distribute it,
252 # with or without modifications, as long as this notice is preserved.
254 # This program is distributed in the hope that it will be useful,
255 # but WITHOUT ANY WARRANTY, to the extent permitted by law; without
256 # even the implied warranty of MERCHANTABILITY or FITNESS FOR A
257 # PARTICULAR PURPOSE.
258 ";
260 # These constants are returned by the lang_*_rewrite functions.
261 # LANG_SUBDIR means that the resulting object file should be in a
262 # subdir if the source file is. In this case the file name cannot
263 # have `..' components.
264 use constant LANG_IGNORE => 0;
265 use constant LANG_PROCESS => 1;
266 use constant LANG_SUBDIR => 2;
268 # These are used when keeping track of whether an object can be built
269 # by two different paths.
270 use constant COMPILE_LIBTOOL => 1;
271 use constant COMPILE_ORDINARY => 2;
273 # We can't always associate a location to a variable or a rule,
274 # when it's defined by Automake. We use INTERNAL in this case.
275 use constant INTERNAL => new Automake::Location;
276 \f
278 ## ---------------------------------- ##
279 ## Variables related to the options. ##
280 ## ---------------------------------- ##
282 # TRUE if we should always generate Makefile.in.
283 my $force_generation = 1;
285 # From the Perl manual.
286 my $symlink_exists = (eval 'symlink ("", "");', $@ eq '');
288 # TRUE if missing standard files should be installed.
289 my $add_missing = 0;
291 # TRUE if we should copy missing files; otherwise symlink if possible.
292 my $copy_missing = 0;
294 # TRUE if we should always update files that we know about.
295 my $force_missing = 0;
298 ## ---------------------------------------- ##
299 ## Variables filled during files scanning. ##
300 ## ---------------------------------------- ##
302 # Name of the configure.ac file.
303 my $configure_ac;
305 # Files found by scanning configure.ac for LIBOBJS.
306 my %libsources = ();
308 # Names used in AC_CONFIG_HEADER call.
309 my @config_headers = ();
311 # Names used in AC_CONFIG_LINKS call.
312 my @config_links = ();
314 # Directory where output files go. Actually, output files are
315 # relative to this directory.
316 my $output_directory;
318 # List of Makefile.am's to process, and their corresponding outputs.
319 my @input_files = ();
320 my %output_files = ();
322 # Complete list of Makefile.am's that exist.
323 my @configure_input_files = ();
325 # List of files in AC_CONFIG_FILES/AC_OUTPUT without Makefile.am's,
326 # and their outputs.
327 my @other_input_files = ();
328 # Where each AC_CONFIG_FILES/AC_OUTPUT/AC_CONFIG_LINK/AC_CONFIG_HEADER appears.
329 # The keys are the files created by these macros.
330 my %ac_config_files_location = ();
332 # Directory to search for configure-required files. This
333 # will be computed by &locate_aux_dir and can be set using
334 # AC_CONFIG_AUX_DIR in configure.ac.
335 # $CONFIG_AUX_DIR is the `raw' directory, valid only in the source-tree.
336 my $config_aux_dir = '';
337 my $config_aux_dir_set_in_configure_ac = 0;
338 # $AM_CONFIG_AUX_DIR is prefixed with $(top_srcdir), so it can be used
339 # in Makefiles.
340 my $am_config_aux_dir = '';
342 # Directory to search for AC_LIBSOURCE files, as set by AC_CONFIG_LIBOBJ_DIR
343 # in configure.ac.
344 my $config_libobj_dir = '';
346 # Whether AM_GNU_GETTEXT has been seen in configure.ac.
347 my $seen_gettext = 0;
348 # Whether AM_GNU_GETTEXT([external]) is used.
349 my $seen_gettext_external = 0;
350 # Where AM_GNU_GETTEXT appears.
351 my $ac_gettext_location;
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']);
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']);
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 seems 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 print "D: $default_includes";
2332 }
2334 my (@mostly_rms, @dist_rms);
2335 foreach my $item (sort keys %compile_clean_files)
2336 {
2337 if ($compile_clean_files{$item} == MOSTLY_CLEAN)
2338 {
2339 push (@mostly_rms, "\t-rm -f $item");
2340 }
2341 elsif ($compile_clean_files{$item} == DIST_CLEAN)
2342 {
2343 push (@dist_rms, "\t-rm -f $item");
2344 }
2345 else
2346 {
2347 prog_error 'invalid entry in %compile_clean_files';
2348 }
2349 }
2351 my ($coms, $vars, $rules) =
2352 &file_contents_internal (1, "$libdir/am/compile.am",
2353 new Automake::Location,
2354 ('DEFAULT_INCLUDES' => $default_includes,
2355 'MOSTLYRMS' => join ("\n", @mostly_rms),
2356 'DISTRMS' => join ("\n", @dist_rms)));
2357 $output_vars .= $vars;
2358 $output_rules .= "$coms$rules";
2360 # Check for automatic de-ANSI-fication.
2361 if (option 'ansi2knr')
2362 {
2363 my ($ansi2knr_filename, $ansi2knr_where) = @{option 'ansi2knr'};
2364 my $ansi2knr_dir = '';
2366 require_variables ($ansi2knr_where, "option `ansi2knr' is used",
2367 TRUE, "ANSI2KNR", "U");
2369 # topdir is where ansi2knr should be.
2370 if ($ansi2knr_filename eq 'ansi2knr')
2371 {
2372 # Only require ansi2knr files if they should appear in
2373 # this directory.
2374 require_file ($ansi2knr_where, FOREIGN,
2375 'ansi2knr.c', 'ansi2knr.1');
2377 # ansi2knr needs to be built before subdirs, so unshift it.
2378 unshift (@all, '$(ANSI2KNR)');
2379 }
2380 else
2381 {
2382 $ansi2knr_dir = dirname ($ansi2knr_filename);
2383 }
2385 $output_rules .= &file_contents ('ansi2knr',
2386 new Automake::Location,
2387 'ANSI2KNR-DIR' => $ansi2knr_dir);
2389 }
2390 }
2392 # handle_libtool ()
2393 # -----------------
2394 # Handle libtool rules.
2395 sub handle_libtool
2396 {
2397 return unless var ('LIBTOOL');
2399 # Libtool requires some files, but only at top level.
2400 # (Starting with Libtool 2.0 we do not have to bother. These
2401 # requirements are done with AC_REQUIRE_AUX_FILE.)
2402 require_conf_file_with_macro (TRUE, 'LIBTOOL', FOREIGN, @libtool_files)
2403 if $relative_dir eq '.' && ! $libtool_new_api;
2405 my @libtool_rms;
2406 foreach my $item (sort keys %libtool_clean_directories)
2407 {
2408 my $dir = ($item eq '.') ? '' : "$item/";
2409 # .libs is for Unix, _libs for DOS.
2410 push (@libtool_rms, "\t-rm -rf ${dir}.libs ${dir}_libs");
2411 }
2413 check_user_variables 'LIBTOOLFLAGS';
2415 # Output the libtool compilation rules.
2416 $output_rules .= &file_contents ('libtool',
2417 new Automake::Location,
2418 LTRMS => join ("\n", @libtool_rms));
2419 }
2421 # handle_programs ()
2422 # ------------------
2423 # Handle C programs.
2424 sub handle_programs
2425 {
2426 my @proglist = &am_install_var ('progs', 'PROGRAMS',
2427 'bin', 'sbin', 'libexec', 'pkglib',
2428 'noinst', 'check');
2429 return if ! @proglist;
2431 my $seen_global_libobjs =
2432 var ('LDADD') && &handle_lib_objects ('', 'LDADD');
2434 foreach my $pair (@proglist)
2435 {
2436 my ($where, $one_file) = @$pair;
2438 my $seen_libobjs = 0;
2439 my $obj = get_object_extension '.$(OBJEXT)';
2441 # Strip any $(EXEEXT) suffix the user might have added, or this
2442 # will confuse &handle_source_transform and &check_canonical_spelling.
2443 # We'll add $(EXEEXT) back later anyway.
2444 $one_file =~ s/\$\(EXEEXT\)$//;
2446 $known_programs{$one_file} = $where;
2448 # Canonicalize names and check for misspellings.
2449 my $xname = &check_canonical_spelling ($one_file, '_LDADD', '_LDFLAGS',
2450 '_SOURCES', '_OBJECTS',
2451 '_DEPENDENCIES');
2453 $where->push_context ("while processing program `$one_file'");
2454 $where->set (INTERNAL->get);
2456 my $linker = &handle_source_transform ($xname, $one_file, $obj, $where,
2457 NONLIBTOOL => 1, LIBTOOL => 0);
2459 if (var ($xname . "_LDADD"))
2460 {
2461 $seen_libobjs = &handle_lib_objects ($xname, $xname . '_LDADD');
2462 }
2463 else
2464 {
2465 # User didn't define prog_LDADD override. So do it.
2466 &define_variable ($xname . '_LDADD', '$(LDADD)', $where);
2468 # This does a bit too much work. But we need it to
2469 # generate _DEPENDENCIES when appropriate.
2470 if (var ('LDADD'))
2471 {
2472 $seen_libobjs = &handle_lib_objects ($xname, 'LDADD');
2473 }
2474 }
2476 reject_var ($xname . '_LIBADD',
2477 "use `${xname}_LDADD', not `${xname}_LIBADD'");
2479 set_seen ($xname . '_DEPENDENCIES');
2480 set_seen ($xname . '_LDFLAGS');
2482 # Determine program to use for link.
2483 my $xlink = &define_per_target_linker_variable ($linker, $xname);
2485 # If the resulting program lies into a subdirectory,
2486 # make sure this directory will exist.
2487 my $dirstamp = require_build_directory_maybe ($one_file);
2489 $libtool_clean_directories{dirname ($one_file)} = 1;
2491 $output_rules .= &file_contents ('program',
2492 $where,
2493 PROGRAM => $one_file,
2494 XPROGRAM => $xname,
2495 XLINK => $xlink,
2496 DIRSTAMP => $dirstamp,
2497 EXEEXT => '$(EXEEXT)');
2499 if ($seen_libobjs || $seen_global_libobjs)
2500 {
2501 if (var ($xname . '_LDADD'))
2502 {
2503 &check_libobjs_sources ($xname, $xname . '_LDADD');
2504 }
2505 elsif (var ('LDADD'))
2506 {
2507 &check_libobjs_sources ($xname, 'LDADD');
2508 }
2509 }
2510 }
2511 }
2514 # handle_libraries ()
2515 # -------------------
2516 # Handle libraries.
2517 sub handle_libraries
2518 {
2519 my @liblist = &am_install_var ('libs', 'LIBRARIES',
2520 'lib', 'pkglib', 'noinst', 'check');
2521 return if ! @liblist;
2523 my @prefix = am_primary_prefixes ('LIBRARIES', 0, 'lib', 'pkglib',
2524 'noinst', 'check');
2526 if (@prefix)
2527 {
2528 my $var = rvar ($prefix[0] . '_LIBRARIES');
2529 $var->requires_variables ('library used', 'RANLIB');
2530 }
2532 &define_variable ('AR', 'ar', INTERNAL);
2533 &define_variable ('ARFLAGS', 'cru', INTERNAL);
2535 foreach my $pair (@liblist)
2536 {
2537 my ($where, $onelib) = @$pair;
2539 my $seen_libobjs = 0;
2540 # Check that the library fits the standard naming convention.
2541 my $bn = basename ($onelib);
2542 if ($bn !~ /^lib.*\.a$/)
2543 {
2544 $bn =~ s/^(?:lib)?(.*?)(?:\.[^.]*)?$/lib$1.a/;
2545 my $suggestion = dirname ($onelib) . "/$bn";
2546 $suggestion =~ s|^\./||g;
2547 msg ('error-gnu/warn', $where,
2548 "`$onelib' is not a standard library name\n"
2549 . "did you mean `$suggestion'?")
2550 }
2552 $where->push_context ("while processing library `$onelib'");
2553 $where->set (INTERNAL->get);
2555 my $obj = get_object_extension '.$(OBJEXT)';
2557 # Canonicalize names and check for misspellings.
2558 my $xlib = &check_canonical_spelling ($onelib, '_LIBADD', '_SOURCES',
2559 '_OBJECTS', '_DEPENDENCIES',
2560 '_AR');
2562 if (! var ($xlib . '_AR'))
2563 {
2564 &define_variable ($xlib . '_AR', '$(AR) $(ARFLAGS)', $where);
2565 }
2567 # Generate support for conditional object inclusion in
2568 # libraries.
2569 if (var ($xlib . '_LIBADD'))
2570 {
2571 if (&handle_lib_objects ($xlib, $xlib . '_LIBADD'))
2572 {
2573 $seen_libobjs = 1;
2574 }
2575 }
2576 else
2577 {
2578 &define_variable ($xlib . "_LIBADD", '', $where);
2579 }
2581 reject_var ($xlib . '_LDADD',
2582 "use `${xlib}_LIBADD', not `${xlib}_LDADD'");
2584 # Make sure we at look at this.
2585 set_seen ($xlib . '_DEPENDENCIES');
2587 &handle_source_transform ($xlib, $onelib, $obj, $where,
2588 NONLIBTOOL => 1, LIBTOOL => 0);
2590 # If the resulting library lies into a subdirectory,
2591 # make sure this directory will exist.
2592 my $dirstamp = require_build_directory_maybe ($onelib);
2594 $output_rules .= &file_contents ('library',
2595 $where,
2596 LIBRARY => $onelib,
2597 XLIBRARY => $xlib,
2598 DIRSTAMP => $dirstamp);
2600 if ($seen_libobjs)
2601 {
2602 if (var ($xlib . '_LIBADD'))
2603 {
2604 &check_libobjs_sources ($xlib, $xlib . '_LIBADD');
2605 }
2606 }
2607 }
2608 }
2611 # handle_ltlibraries ()
2612 # ---------------------
2613 # Handle shared libraries.
2614 sub handle_ltlibraries
2615 {
2616 my @liblist = &am_install_var ('ltlib', 'LTLIBRARIES',
2617 'noinst', 'lib', 'pkglib', 'check');
2618 return if ! @liblist;
2620 my @prefix = am_primary_prefixes ('LTLIBRARIES', 0, 'lib', 'pkglib',
2621 'noinst', 'check');
2623 if (@prefix)
2624 {
2625 my $var = rvar ($prefix[0] . '_LTLIBRARIES');
2626 $var->requires_variables ('Libtool library used', 'LIBTOOL');
2627 }
2629 my %instdirs = ();
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) =~ s/^nobase_//;
2637 my $var = rvar ($key . '_LTLIBRARIES');
2639 # We reject libraries which are installed in several places
2640 # in the same condition, because we can only specify one
2641 # `-rpath' option.
2642 $var->traverse_recursively
2643 (sub
2644 {
2645 my ($var, $val, $cond, $full_cond) = @_;
2646 my $hcond = $full_cond->human;
2647 my $where = $var->rdef ($cond)->location;
2648 # A library cannot be installed in different directory
2649 # in overlapping conditions.
2650 if (exists $instconds{$val})
2651 {
2652 my ($msg, $acond) =
2653 $instconds{$val}->ambiguous_p ($val, $full_cond);
2655 if ($msg)
2656 {
2657 error ($where, $msg, partial => 1);
2659 my $dirtxt = "installed in `$dir'";
2660 $dirtxt = "built for `$dir'"
2661 if $dir eq 'EXTRA' || $dir eq 'noinst' || $dir eq 'check';
2662 my $dircond =
2663 $full_cond->true ? "" : " in condition $hcond";
2665 error ($where, "`$val' should be $dirtxt$dircond ...",
2666 partial => 1);
2668 my $hacond = $acond->human;
2669 my $adir = $instdirs{$val}{$acond};
2670 my $adirtxt = "installed in `$adir'";
2671 $adirtxt = "built for `$adir'"
2672 if ($adir eq 'EXTRA' || $adir eq 'noinst'
2673 || $adir eq 'check');
2674 my $adircond = $acond->true ? "" : " in condition $hacond";
2676 my $onlyone = ($dir ne $adir) ?
2677 ("\nLibtool libraries can be built for only one "
2678 . "destination.") : "";
2680 error ($liblocations{$val}{$acond},
2681 "... and should also be $adirtxt$adircond.$onlyone");
2682 return;
2683 }
2684 }
2685 else
2686 {
2687 $instconds{$val} = new Automake::DisjConditions;
2688 }
2689 $instdirs{$val}{$full_cond} = $dir;
2690 $liblocations{$val}{$full_cond} = $where;
2691 $instconds{$val} = $instconds{$val}->merge ($full_cond);
2692 },
2693 sub
2694 {
2695 return ();
2696 },
2697 skip_ac_subst => 1);
2698 }
2700 foreach my $pair (@liblist)
2701 {
2702 my ($where, $onelib) = @$pair;
2704 my $seen_libobjs = 0;
2705 my $obj = get_object_extension '.lo';
2707 # Canonicalize names and check for misspellings.
2708 my $xlib = &check_canonical_spelling ($onelib, '_LIBADD', '_LDFLAGS',
2709 '_SOURCES', '_OBJECTS',
2710 '_DEPENDENCIES');
2712 # Check that the library fits the standard naming convention.
2713 my $libname_rx = '^lib.*\.la';
2714 my $ldvar = var ("${xlib}_LDFLAGS") || var ('AM_LDFLAGS');
2715 my $ldvar2 = var ('LDFLAGS');
2716 if (($ldvar && grep (/-module/, $ldvar->value_as_list_recursive))
2717 || ($ldvar2 && grep (/-module/, $ldvar2->value_as_list_recursive)))
2718 {
2719 # Relax name checking for libtool modules.
2720 $libname_rx = '\.la';
2721 }
2723 my $bn = basename ($onelib);
2724 if ($bn !~ /$libname_rx$/)
2725 {
2726 my $type = 'library';
2727 if ($libname_rx eq '\.la')
2728 {
2729 $bn =~ s/^(lib|)(.*?)(?:\.[^.]*)?$/$1$2.la/;
2730 $type = 'module';
2731 }
2732 else
2733 {
2734 $bn =~ s/^(?:lib)?(.*?)(?:\.[^.]*)?$/lib$1.la/;
2735 }
2736 my $suggestion = dirname ($onelib) . "/$bn";
2737 $suggestion =~ s|^\./||g;
2738 msg ('error-gnu/warn', $where,
2739 "`$onelib' is not a standard libtool $type name\n"
2740 . "did you mean `$suggestion'?")
2741 }
2743 $where->push_context ("while processing Libtool library `$onelib'");
2744 $where->set (INTERNAL->get);
2746 # Make sure we look at these.
2747 set_seen ($xlib . '_LDFLAGS');
2748 set_seen ($xlib . '_DEPENDENCIES');
2750 # Generate support for conditional object inclusion in
2751 # libraries.
2752 if (var ($xlib . '_LIBADD'))
2753 {
2754 if (&handle_lib_objects ($xlib, $xlib . '_LIBADD'))
2755 {
2756 $seen_libobjs = 1;
2757 }
2758 }
2759 else
2760 {
2761 &define_variable ($xlib . "_LIBADD", '', $where);
2762 }
2764 reject_var ("${xlib}_LDADD",
2765 "use `${xlib}_LIBADD', not `${xlib}_LDADD'");
2768 my $linker = &handle_source_transform ($xlib, $onelib, $obj, $where,
2769 NONLIBTOOL => 0, LIBTOOL => 1);
2771 # Determine program to use for link.
2772 my $xlink = &define_per_target_linker_variable ($linker, $xlib);
2774 my $rpathvar = "am_${xlib}_rpath";
2775 my $rpath = "\$($rpathvar)";
2776 foreach my $rcond ($instconds{$onelib}->conds)
2777 {
2778 my $val;
2779 if ($instdirs{$onelib}{$rcond} eq 'EXTRA'
2780 || $instdirs{$onelib}{$rcond} eq 'noinst'
2781 || $instdirs{$onelib}{$rcond} eq 'check')
2782 {
2783 # It's an EXTRA_ library, so we can't specify -rpath,
2784 # because we don't know where the library will end up.
2785 # The user probably knows, but generally speaking automake
2786 # doesn't -- and in fact configure could decide
2787 # dynamically between two different locations.
2788 $val = '';
2789 }
2790 else
2791 {
2792 $val = ('-rpath $(' . $instdirs{$onelib}{$rcond} . 'dir)');
2793 }
2794 if ($rcond->true)
2795 {
2796 # If $rcond is true there is only one condition and
2797 # there is no point defining an helper variable.
2798 $rpath = $val;
2799 }
2800 else
2801 {
2802 define_pretty_variable ($rpathvar, $rcond, INTERNAL, $val);
2803 }
2804 }
2806 # If the resulting library lies into a subdirectory,
2807 # make sure this directory will exist.
2808 my $dirstamp = require_build_directory_maybe ($onelib);
2810 # Remember to cleanup .libs/ in this directory.
2811 my $dirname = dirname $onelib;
2812 $libtool_clean_directories{$dirname} = 1;
2814 $output_rules .= &file_contents ('ltlibrary',
2815 $where,
2816 LTLIBRARY => $onelib,
2817 XLTLIBRARY => $xlib,
2818 RPATH => $rpath,
2819 XLINK => $xlink,
2820 DIRSTAMP => $dirstamp);
2821 if ($seen_libobjs)
2822 {
2823 if (var ($xlib . '_LIBADD'))
2824 {
2825 &check_libobjs_sources ($xlib, $xlib . '_LIBADD');
2826 }
2827 }
2828 }
2829 }
2831 # See if any _SOURCES variable were misspelled.
2832 sub check_typos ()
2833 {
2834 # It is ok if the user sets this particular variable.
2835 set_seen 'AM_LDFLAGS';
2837 foreach my $primary ('SOURCES', 'LIBADD', 'LDADD', 'LDFLAGS', 'DEPENDENCIES')
2838 {
2839 foreach my $var (variables $primary)
2840 {
2841 my $varname = $var->name;
2842 # A configure variable is always legitimate.
2843 next if exists $configure_vars{$varname};
2845 for my $cond ($var->conditions->conds)
2846 {
2847 $varname =~ /^(?:nobase_)?(?:dist_|nodist_)?(.*)_[[:alnum:]]+$/;
2848 msg_var ('syntax', $var, "variable `$varname' is defined but no"
2849 . " program or\nlibrary has `$1' as canonic name"
2850 . " (possible typo)")
2851 unless $var->rdef ($cond)->seen;
2852 }
2853 }
2854 }
2855 }
2858 # Handle scripts.
2859 sub handle_scripts
2860 {
2861 # NOTE we no longer automatically clean SCRIPTS, because it is
2862 # useful to sometimes distribute scripts verbatim. This happens
2863 # e.g. in Automake itself.
2864 &am_install_var ('-candist', 'scripts', 'SCRIPTS',
2865 'bin', 'sbin', 'libexec', 'pkgdata',
2866 'noinst', 'check');
2867 }
2872 ## ------------------------ ##
2873 ## Handling Texinfo files. ##
2874 ## ------------------------ ##
2876 # ($OUTFILE, $VFILE, @CLEAN_FILES)
2877 # &scan_texinfo_file ($FILENAME)
2878 # ------------------------------
2879 # $OUTFILE - name of the info file produced by $FILENAME.
2880 # $VFILE - name of the version.texi file used (undef if none).
2881 # @CLEAN_FILES - list of byproducts (indexes etc.)
2882 sub scan_texinfo_file ($)
2883 {
2884 my ($filename) = @_;
2886 # Some of the following extensions are always created, no matter
2887 # whether indexes are used or not. Other (like cps, fns, ... pgs)
2888 # are only created when they are used. We used to scan $FILENAME
2889 # for their use, but that is not enough: they could be used in
2890 # included files. We can't scan included files because we don't
2891 # know the include path. Therefore we always erase these files, no
2892 # matter whether they are used or not.
2893 #
2894 # (tmp is only created if an @macro is used and a certain e-TeX
2895 # feature is not available.)
2896 my %clean_suffixes =
2897 map { $_ => 1 } (qw(aux log toc tmp
2898 cp cps
2899 fn fns
2900 ky kys
2901 vr vrs
2902 tp tps
2903 pg pgs)); # grep 'new.*index' texinfo.tex
2905 my $texi = new Automake::XFile "< $filename";
2906 verb "reading $filename";
2908 my ($outfile, $vfile);
2909 while ($_ = $texi->getline)
2910 {
2911 if (/^\@setfilename +(\S+)/)
2912 {
2913 # Honor only the first @setfilename. (It's possible to have
2914 # more occurrences later if the manual shows examples of how
2915 # to use @setfilename...)
2916 next if $outfile;
2918 $outfile = $1;
2919 if ($outfile =~ /\.([^.]+)$/ && $1 ne 'info')
2920 {
2921 error ("$filename:$.",
2922 "output `$outfile' has unrecognized extension");
2923 return;
2924 }
2925 }
2926 # A "version.texi" file is actually any file whose name matches
2927 # "vers*.texi".
2928 elsif (/^\@include\s+(vers[^.]*\.texi)\s*$/)
2929 {
2930 $vfile = $1;
2931 }
2933 # Try to find new or unused indexes.
2935 # Creating a new category of index.
2936 elsif (/^\@def(code)?index (\w+)/)
2937 {
2938 $clean_suffixes{$2} = 1;
2939 $clean_suffixes{"$2s"} = 1;
2940 }
2942 # Merging an index into an another.
2943 elsif (/^\@syn(code)?index (\w+) (\w+)/)
2944 {
2945 delete $clean_suffixes{"$2s"};
2946 $clean_suffixes{"$3s"} = 1;
2947 }
2949 }
2951 if (! $outfile)
2952 {
2953 err_am "`$filename' missing \@setfilename";
2954 return;
2955 }
2957 my $infobase = basename ($filename);
2958 $infobase =~ s/\.te?xi(nfo)?$//;
2959 return ($outfile, $vfile,
2960 map { "$infobase.$_" } (sort keys %clean_suffixes));
2961 }
2964 # ($DIRSTAMP, @CLEAN_FILES)
2965 # output_texinfo_build_rules ($SOURCE, $DEST, $INSRC, @DEPENDENCIES)
2966 # ------------------------------------------------------------------
2967 # SOURCE - the source Texinfo file
2968 # DEST - the destination Info file
2969 # INSRC - wether DEST should be built in the source tree
2970 # DEPENDENCIES - known dependencies
2971 sub output_texinfo_build_rules ($$$@)
2972 {
2973 my ($source, $dest, $insrc, @deps) = @_;
2975 # Split `a.texi' into `a' and `.texi'.
2976 my ($spfx, $ssfx) = ($source =~ /^(.*?)(\.[^.]*)?$/);
2977 my ($dpfx, $dsfx) = ($dest =~ /^(.*?)(\.[^.]*)?$/);
2979 $ssfx ||= "";
2980 $dsfx ||= "";
2982 # We can output two kinds of rules: the "generic" rules use Make
2983 # suffix rules and are appropriate when $source and $dest do not lie
2984 # in a sub-directory; the "specific" rules are needed in the other
2985 # case.
2986 #
2987 # The former are output only once (this is not really apparent here,
2988 # but just remember that some logic deeper in Automake will not
2989 # output the same rule twice); while the later need to be output for
2990 # each Texinfo source.
2991 my $generic;
2992 my $makeinfoflags;
2993 my $sdir = dirname $source;
2994 if ($sdir eq '.' && dirname ($dest) eq '.')
2995 {
2996 $generic = 1;
2997 $makeinfoflags = '-I $(srcdir)';
2998 }
2999 else
3000 {
3001 $generic = 0;
3002 $makeinfoflags = "-I $sdir -I \$(srcdir)/$sdir";
3003 }
3005 # A directory can contain two kinds of info files: some built in the
3006 # source tree, and some built in the build tree. The rules are
3007 # different in each case. However we cannot output two different
3008 # set of generic rules. Because in-source builds are more usual, we
3009 # use generic rules in this case and fall back to "specific" rules
3010 # for build-dir builds. (It should not be a problem to invert this
3011 # if needed.)
3012 $generic = 0 unless $insrc;
3014 # We cannot use a suffix rule to build info files with an empty
3015 # extension. Otherwise we would output a single suffix inference
3016 # rule, with separate dependencies, as in
3017 #
3018 # .texi:
3019 # $(MAKEINFO) ...
3020 # foo.info: foo.texi
3021 #
3022 # which confuse Solaris make. (See the Autoconf manual for
3023 # details.) Therefore we use a specific rule in this case. This
3024 # applies to info files only (dvi and pdf files always have an
3025 # extension).
3026 my $generic_info = ($generic && $dsfx) ? 1 : 0;
3028 # If the resulting file lie into a subdirectory,
3029 # make sure this directory will exist.
3030 my $dirstamp = require_build_directory_maybe ($dest);
3032 my $dipfx = ($insrc ? '$(srcdir)/' : '') . $dpfx;
3034 $output_rules .= file_contents ('texibuild',
3035 new Automake::Location,
3036 DEPS => "@deps",
3037 DEST_PREFIX => $dpfx,
3038 DEST_INFO_PREFIX => $dipfx,
3039 DEST_SUFFIX => $dsfx,
3040 DIRSTAMP => $dirstamp,
3041 GENERIC => $generic,
3042 GENERIC_INFO => $generic_info,
3043 INSRC => $insrc,
3044 MAKEINFOFLAGS => $makeinfoflags,
3045 SOURCE => ($generic
3046 ? '$<' : $source),
3047 SOURCE_INFO => ($generic_info
3048 ? '$<' : $source),
3049 SOURCE_REAL => $source,
3050 SOURCE_SUFFIX => $ssfx,
3051 );
3052 return ($dirstamp, "$dpfx.dvi", "$dpfx.pdf", "$dpfx.ps", "$dpfx.html");
3053 }
3056 # $TEXICLEANS
3057 # handle_texinfo_helper ($info_texinfos)
3058 # --------------------------------------
3059 # Handle all Texinfo source; helper for handle_texinfo.
3060 sub handle_texinfo_helper ($)
3061 {
3062 my ($info_texinfos) = @_;
3063 my (@infobase, @info_deps_list, @texi_deps);
3064 my %versions;
3065 my $done = 0;
3066 my @texi_cleans;
3068 # Build a regex matching user-cleaned files.
3069 my $d = var 'DISTCLEANFILES';
3070 my $c = var 'CLEANFILES';
3071 my @f = ();
3072 push @f, $d->value_as_list_recursive (inner_expand => 1) if $d;
3073 push @f, $c->value_as_list_recursive (inner_expand => 1) if $c;
3074 @f = map { s|[^A-Za-z_0-9*\[\]\-]|\\$&|g; s|\*|[^/]*|g; $_; } @f;
3075 my $user_cleaned_files = '^(?:' . join ('|', @f) . ')$';
3077 foreach my $texi
3078 ($info_texinfos->value_as_list_recursive (inner_expand => 1))
3079 {
3080 my $infobase = $texi;
3081 $infobase =~ s/\.(txi|texinfo|texi)$//;
3083 if ($infobase eq $texi)
3084 {
3085 # FIXME: report line number.
3086 err_am "texinfo file `$texi' has unrecognized extension";
3087 next;
3088 }
3090 push @infobase, $infobase;
3092 # If 'version.texi' is referenced by input file, then include
3093 # automatic versioning capability.
3094 my ($out_file, $vtexi, @clean_files) =
3095 scan_texinfo_file ("$relative_dir/$texi")
3096 or next;
3097 push (@texi_cleans, @clean_files);
3099 # If the Texinfo source is in a subdirectory, create the
3100 # resulting info in this subdirectory. If it is in the current
3101 # directory, try hard to not prefix "./" because it breaks the
3102 # generic rules.
3103 my $outdir = dirname ($texi) . '/';
3104 $outdir = "" if $outdir eq './';
3105 $out_file = $outdir . $out_file;
3107 # Until Automake 1.6.3, .info files were built in the
3108 # source tree. This was an obstacle to the support of
3109 # non-distributed .info files, and non-distributed .texi
3110 # files.
3111 #
3112 # * Non-distributed .texi files is important in some packages
3113 # where .texi files are built at make time, probably using
3114 # other binaries built in the package itself, maybe using
3115 # tools or information found on the build host. Because
3116 # these files are not distributed they are always rebuilt
3117 # at make time; they should therefore not lie in the source
3118 # directory. One plan was to support this using
3119 # nodist_info_TEXINFOS or something similar. (Doing this
3120 # requires some sanity checks. For instance Automake should
3121 # not allow:
3122 # dist_info_TEXINFO = foo.texi
3123 # nodist_foo_TEXINFO = included.texi
3124 # because a distributed file should never depend on a
3125 # non-distributed file.)
3126 #
3127 # * If .texi files are not distributed, then .info files should
3128 # not be distributed either. There are also cases where one
3129 # want to distribute .texi files, but do not want to
3130 # distribute the .info files. For instance the Texinfo package
3131 # distributes the tool used to build these files; it would
3132 # be a waste of space to distribute them. It's not clear
3133 # which syntax we should use to indicate that .info files should
3134 # not be distributed. Akim Demaille suggested that eventually
3135 # we switch to a new syntax:
3136 # | Maybe we should take some inspiration from what's already
3137 # | done in the rest of Automake. Maybe there is too much
3138 # | syntactic sugar here, and you want
3139 # | nodist_INFO = bar.info
3140 # | dist_bar_info_SOURCES = bar.texi
3141 # | bar_texi_DEPENDENCIES = foo.texi
3142 # | with a bit of magic to have bar.info represent the whole
3143 # | bar*info set. That's a lot more verbose that the current
3144 # | situation, but it is # not new, hence the user has less
3145 # | to learn.
3146 # |
3147 # | But there is still too much room for meaningless specs:
3148 # | nodist_INFO = bar.info
3149 # | dist_bar_info_SOURCES = bar.texi
3150 # | dist_PS = bar.ps something-written-by-hand.ps
3151 # | nodist_bar_ps_SOURCES = bar.texi
3152 # | bar_texi_DEPENDENCIES = foo.texi
3153 # | here bar.texi is dist_ in line 2, and nodist_ in 4.
3154 #
3155 # Back to the point, it should be clear that in order to support
3156 # non-distributed .info files, we need to build them in the
3157 # build tree, not in the source tree (non-distributed .texi
3158 # files are less of a problem, because we do not output build
3159 # rules for them). In Automake 1.7 .info build rules have been
3160 # largely cleaned up so that .info files get always build in the
3161 # build tree, even when distributed. The idea was that
3162 # (1) if during a VPATH build the .info file was found to be
3163 # absent or out-of-date (in the source tree or in the
3164 # build tree), Make would rebuild it in the build tree.
3165 # If an up-to-date source-tree of the .info file existed,
3166 # make would not rebuild it in the build tree.
3167 # (2) having two copies of .info files, one in the source tree
3168 # and one (newer) in the build tree is not a problem
3169 # because `make dist' always pick files in the build tree
3170 # first.
3171 # However it turned out the be a bad idea for several reasons:
3172 # * Tru64, OpenBSD, and FreeBSD (not NetBSD) Make do not behave
3173 # like GNU Make on point (1) above. These implementations
3174 # of Make would always rebuild .info files in the build
3175 # tree, even if such files were up to date in the source
3176 # tree. Consequently, it was impossible to perform a VPATH
3177 # build of a package containing Texinfo files using these
3178 # Make implementations.
3179 # (Refer to the Autoconf Manual, section "Limitation of
3180 # Make", paragraph "VPATH", item "target lookup", for
3181 # an account of the differences between these
3182 # implementations.)
3183 # * The GNU Coding Standards require these files to be built
3184 # in the source-tree (when they are distributed, that is).
3185 # * Keeping a fresher copy of distributed files in the
3186 # build tree can be annoying during development because
3187 # - if the files is kept under CVS, you really want it
3188 # to be updated in the source tree
3189 # - it is confusing that `make distclean' does not erase
3190 # all files in the build tree.
3191 #
3192 # Consequently, starting with Automake 1.8, .info files are
3193 # built in the source tree again. Because we still plan to
3194 # support non-distributed .info files at some point, we
3195 # have a single variable ($INSRC) that controls whether
3196 # the current .info file must be built in the source tree
3197 # or in the build tree. Actually this variable is switched
3198 # off for .info files that appear to be cleaned; this is
3199 # for backward compatibility with package such as Texinfo,
3200 # which do things like
3201 # info_TEXINFOS = texinfo.txi info-stnd.texi info.texi
3202 # DISTCLEANFILES = texinfo texinfo-* info*.info*
3203 # # Do not create info files for distribution.
3204 # dist-info:
3205 # in order not to distribute .info files.
3206 my $insrc = ($out_file =~ $user_cleaned_files) ? 0 : 1;
3208 my $soutdir = '$(srcdir)/' . $outdir;
3209 $outdir = $soutdir if $insrc;
3211 # If user specified file_TEXINFOS, then use that as explicit
3212 # dependency list.
3213 @texi_deps = ();
3214 push (@texi_deps, "$soutdir$vtexi") if $vtexi;
3216 my $canonical = canonicalize ($infobase);
3217 if (var ($canonical . "_TEXINFOS"))
3218 {
3219 push (@texi_deps, '$(' . $canonical . '_TEXINFOS)');
3220 push_dist_common ('$(' . $canonical . '_TEXINFOS)');
3221 }
3223 my ($dirstamp, @cfiles) =
3224 output_texinfo_build_rules ($texi, $out_file, $insrc, @texi_deps);
3225 push (@texi_cleans, @cfiles);
3227 push (@info_deps_list, $out_file);
3229 # If a vers*.texi file is needed, emit the rule.
3230 if ($vtexi)
3231 {
3232 err_am ("`$vtexi', included in `$texi', "
3233 . "also included in `$versions{$vtexi}'")
3234 if defined $versions{$vtexi};
3235 $versions{$vtexi} = $texi;
3237 # We number the stamp-vti files. This is doable since the
3238 # actual names don't matter much. We only number starting
3239 # with the second one, so that the common case looks nice.
3240 my $vti = ($done ? $done : 'vti');
3241 ++$done;
3243 # This is ugly, but it is our historical practice.
3244 if ($config_aux_dir_set_in_configure_ac)
3245 {
3246 require_conf_file_with_macro (TRUE, 'info_TEXINFOS', FOREIGN,
3247 'mdate-sh');
3248 }
3249 else
3250 {
3251 require_file_with_macro (TRUE, 'info_TEXINFOS',
3252 FOREIGN, 'mdate-sh');
3253 }
3255 my $conf_dir;
3256 if ($config_aux_dir_set_in_configure_ac)
3257 {
3258 $conf_dir = "$am_config_aux_dir/";
3259 }
3260 else
3261 {
3262 $conf_dir = '$(srcdir)/';
3263 }
3264 $output_rules .= file_contents ('texi-vers',
3265 new Automake::Location,
3266 TEXI => $texi,
3267 VTI => $vti,
3268 STAMPVTI => "${soutdir}stamp-$vti",
3269 VTEXI => "$soutdir$vtexi",
3270 MDDIR => $conf_dir,
3271 DIRSTAMP => $dirstamp);
3272 }
3273 }
3275 # Handle location of texinfo.tex.
3276 my $need_texi_file = 0;
3277 my $texinfodir;
3278 if (var ('TEXINFO_TEX'))
3279 {
3280 # The user defined TEXINFO_TEX so assume he knows what he is
3281 # doing.
3282 $texinfodir = ('$(srcdir)/'
3283 . dirname (variable_value ('TEXINFO_TEX')));
3284 }
3285 elsif (option 'cygnus')
3286 {
3287 $texinfodir = '$(top_srcdir)/../texinfo';
3288 define_variable ('TEXINFO_TEX', "$texinfodir/texinfo.tex", INTERNAL);
3289 }
3290 elsif ($config_aux_dir_set_in_configure_ac)
3291 {
3292 $texinfodir = $am_config_aux_dir;
3293 define_variable ('TEXINFO_TEX', "$texinfodir/texinfo.tex", INTERNAL);
3294 $need_texi_file = 2; # so that we require_conf_file later
3295 }
3296 else
3297 {
3298 $texinfodir = '$(srcdir)';
3299 $need_texi_file = 1;
3300 }
3301 define_variable ('am__TEXINFO_TEX_DIR', $texinfodir, INTERNAL);
3303 push (@dist_targets, 'dist-info');
3305 if (! option 'no-installinfo')
3306 {
3307 # Make sure documentation is made and installed first. Use
3308 # $(INFO_DEPS), not 'info', because otherwise recursive makes
3309 # get run twice during "make all".
3310 unshift (@all, '$(INFO_DEPS)');
3311 }
3313 define_files_variable ("DVIS", @infobase, 'dvi', INTERNAL);
3314 define_files_variable ("PDFS", @infobase, 'pdf', INTERNAL);
3315 define_files_variable ("PSS", @infobase, 'ps', INTERNAL);
3316 define_files_variable ("HTMLS", @infobase, 'html', INTERNAL);
3318 # This next isn't strictly needed now -- the places that look here
3319 # could easily be changed to look in info_TEXINFOS. But this is
3320 # probably better, in case noinst_TEXINFOS is ever supported.
3321 define_variable ("TEXINFOS", variable_value ('info_TEXINFOS'), INTERNAL);
3323 # Do some error checking. Note that this file is not required
3324 # when in Cygnus mode; instead we defined TEXINFO_TEX explicitly
3325 # up above.
3326 if ($need_texi_file && ! option 'no-texinfo.tex')
3327 {
3328 if ($need_texi_file > 1)
3329 {
3330 require_conf_file_with_macro (TRUE, 'info_TEXINFOS', FOREIGN,
3331 'texinfo.tex');
3332 }
3333 else
3334 {
3335 require_file_with_macro (TRUE, 'info_TEXINFOS', FOREIGN,
3336 'texinfo.tex');
3337 }
3338 }
3340 return makefile_wrap ("", "\t ", @texi_cleans);
3341 }
3344 # handle_texinfo ()
3345 # -----------------
3346 # Handle all Texinfo source.
3347 sub handle_texinfo ()
3348 {
3349 reject_var 'TEXINFOS', "`TEXINFOS' is an anachronism; use `info_TEXINFOS'";
3350 # FIXME: I think this is an obsolete future feature name.
3351 reject_var 'html_TEXINFOS', "HTML generation not yet supported";
3353 my $info_texinfos = var ('info_TEXINFOS');
3354 my $texiclean = "";
3355 if ($info_texinfos)
3356 {
3357 $texiclean = handle_texinfo_helper ($info_texinfos);
3358 }
3359 $output_rules .= file_contents ('texinfos',
3360 new Automake::Location,
3361 TEXICLEAN => $texiclean,
3362 'LOCAL-TEXIS' => !!$info_texinfos);
3363 }
3366 # Handle any man pages.
3367 sub handle_man_pages
3368 {
3369 reject_var 'MANS', "`MANS' is an anachronism; use `man_MANS'";
3371 # Find all the sections in use. We do this by first looking for
3372 # "standard" sections, and then looking for any additional
3373 # sections used in man_MANS.
3374 my (%sections, %vlist);
3375 # We handle nodist_ for uniformity. man pages aren't distributed
3376 # by default so it isn't actually very important.
3377 foreach my $pfx ('', 'dist_', 'nodist_')
3378 {
3379 # Add more sections as needed.
3380 foreach my $section ('0'..'9', 'n', 'l')
3381 {
3382 my $varname = $pfx . 'man' . $section . '_MANS';
3383 if (var ($varname))
3384 {
3385 $sections{$section} = 1;
3386 $varname = '$(' . $varname . ')';
3387 $vlist{$varname} = 1;
3389 &push_dist_common ($varname)
3390 if $pfx eq 'dist_';
3391 }
3392 }
3394 my $varname = $pfx . 'man_MANS';
3395 my $var = var ($varname);
3396 if ($var)
3397 {
3398 foreach ($var->value_as_list_recursive)
3399 {
3400 # A page like `foo.1c' goes into man1dir.
3401 if (/\.([0-9a-z])([a-z]*)$/)
3402 {
3403 $sections{$1} = 1;
3404 }
3405 }
3407 $varname = '$(' . $varname . ')';
3408 $vlist{$varname} = 1;
3409 &push_dist_common ($varname)
3410 if $pfx eq 'dist_';
3411 }
3412 }
3414 return unless %sections;
3416 # Now for each section, generate an install and uninstall rule.
3417 # Sort sections so output is deterministic.
3418 foreach my $section (sort keys %sections)
3419 {
3420 $output_rules .= &file_contents ('mans',
3421 new Automake::Location,
3422 SECTION => $section);
3423 }
3425 my @mans = sort keys %vlist;
3426 $output_vars .= file_contents ('mans-vars',
3427 new Automake::Location,
3428 MANS => "@mans");
3430 push (@all, '$(MANS)')
3431 unless option 'no-installman';
3432 }
3434 # Handle DATA variables.
3435 sub handle_data
3436 {
3437 &am_install_var ('-noextra', '-candist', 'data', 'DATA',
3438 'data', 'dataroot', 'dvi', 'html', 'pdf', 'ps',
3439 'sysconf', 'sharedstate', 'localstate',
3440 'pkgdata', 'lisp', 'noinst', 'check');
3441 }
3443 # Handle TAGS.
3444 sub handle_tags
3445 {
3446 my @tag_deps = ();
3447 my @ctag_deps = ();
3448 if (var ('SUBDIRS'))
3449 {
3450 $output_rules .= ("tags-recursive:\n"
3451 . "\tlist=\'\$(SUBDIRS)\'; for subdir in \$\$list; do \\\n"
3452 # Never fail here if a subdir fails; it
3453 # isn't important.
3454 . "\t test \"\$\$subdir\" = . || (cd \$\$subdir"
3455 . " && \$(MAKE) \$(AM_MAKEFLAGS) tags); \\\n"
3456 . "\tdone\n");
3457 push (@tag_deps, 'tags-recursive');
3458 &depend ('.PHONY', 'tags-recursive');
3460 $output_rules .= ("ctags-recursive:\n"
3461 . "\tlist=\'\$(SUBDIRS)\'; for subdir in \$\$list; do \\\n"
3462 # Never fail here if a subdir fails; it
3463 # isn't important.
3464 . "\t test \"\$\$subdir\" = . || (cd \$\$subdir"
3465 . " && \$(MAKE) \$(AM_MAKEFLAGS) ctags); \\\n"
3466 . "\tdone\n");
3467 push (@ctag_deps, 'ctags-recursive');
3468 &depend ('.PHONY', 'ctags-recursive');
3469 }
3471 if (&saw_sources_p (1)
3472 || var ('ETAGS_ARGS')
3473 || @tag_deps)
3474 {
3475 my @config;
3476 foreach my $spec (@config_headers)
3477 {
3478 my ($out, @ins) = split_config_file_spec ($spec);
3479 foreach my $in (@ins)
3480 {
3481 # If the config header source is in this directory,
3482 # require it.
3483 push @config, basename ($in)
3484 if $relative_dir eq dirname ($in);
3485 }
3486 }
3487 $output_rules .= &file_contents ('tags',
3488 new Automake::Location,
3489 CONFIG => "@config",
3490 TAGSDIRS => "@tag_deps",
3491 CTAGSDIRS => "@ctag_deps");
3493 set_seen 'TAGS_DEPENDENCIES';
3494 }
3495 elsif (reject_var ('TAGS_DEPENDENCIES',
3496 "doesn't make sense to define `TAGS_DEPENDENCIES'"
3497 . "without\nsources or `ETAGS_ARGS'"))
3498 {
3499 }
3500 else
3501 {
3502 # Every Makefile must define some sort of TAGS rule.
3503 # Otherwise, it would be possible for a top-level "make TAGS"
3504 # to fail because some subdirectory failed.
3505 $output_rules .= "tags: TAGS\nTAGS:\n\n";
3506 # Ditto ctags.
3507 $output_rules .= "ctags: CTAGS\nCTAGS:\n\n";
3508 }
3509 }
3511 # Handle multilib support.
3512 sub handle_multilib
3513 {
3514 if ($seen_multilib && $relative_dir eq '.')
3515 {
3516 $output_rules .= &file_contents ('multilib', new Automake::Location);
3517 push (@all, 'all-multi');
3518 }
3519 }
3522 # user_phony_rule ($NAME)
3523 # -----------------------
3524 # Return false if rule $NAME does not exist. Otherwise,
3525 # declare it as phony, complete its definition (in case it is
3526 # conditional), and return its Automake::Rule instance.
3527 sub user_phony_rule ($)
3528 {
3529 my ($name) = @_;
3530 my $rule = rule $name;
3531 if ($rule)
3532 {
3533 depend ('.PHONY', $name);
3534 # Define $NAME in all condition where it is not already defined,
3535 # so that it is always OK to depend on $NAME.
3536 for my $c ($rule->not_always_defined_in_cond (TRUE)->conds)
3537 {
3538 Automake::Rule::define ($name, 'internal', RULE_AUTOMAKE,
3539 $c, INTERNAL);
3540 $output_rules .= $c->subst_string . "$name:\n";
3541 }
3542 }
3543 return $rule;
3544 }
3547 # $BOOLEAN
3548 # &for_dist_common ($A, $B)
3549 # -------------------------
3550 # Subroutine for &handle_dist: sort files to dist.
3551 #
3552 # We put README first because it then becomes easier to make a
3553 # Usenet-compliant shar file (in these, README must be first).
3554 #
3555 # FIXME: do more ordering of files here.
3556 sub for_dist_common
3557 {
3558 return 0
3559 if $a eq $b;
3560 return -1
3561 if $a eq 'README';
3562 return 1
3563 if $b eq 'README';
3564 return $a cmp $b;
3565 }
3567 # handle_dist
3568 # -----------
3569 # Handle 'dist' target.
3570 sub handle_dist ()
3571 {
3572 # Substitutions for distdir.am
3573 my %transform;
3575 # Define DIST_SUBDIRS. This must always be done, regardless of the
3576 # no-dist setting: target like `distclean' or `maintainer-clean' use it.
3577 my $subdirs = var ('SUBDIRS');
3578 if ($subdirs)
3579 {
3580 # If SUBDIRS is conditionally defined, then set DIST_SUBDIRS
3581 # to all possible directories, and use it. If DIST_SUBDIRS is
3582 # defined, just use it.
3584 # Note that we check DIST_SUBDIRS first on purpose, so that
3585 # we don't call has_conditional_contents for now reason.
3586 # (In the past one project used so many conditional subdirectories
3587 # that calling has_conditional_contents on SUBDIRS caused
3588 # automake to grow to 150Mb -- this should not happen with
3589 # the current implementation of has_conditional_contents,
3590 # but it's more efficient to avoid the call anyway.)
3591 if (var ('DIST_SUBDIRS'))
3592 {
3593 }
3594 elsif ($subdirs->has_conditional_contents)
3595 {
3596 define_pretty_variable
3597 ('DIST_SUBDIRS', TRUE, INTERNAL,
3598 uniq ($subdirs->value_as_list_recursive));
3599 }
3600 else
3601 {
3602 # We always define this because that is what `distclean'
3603 # wants.
3604 define_pretty_variable ('DIST_SUBDIRS', TRUE, INTERNAL,
3605 '$(SUBDIRS)');
3606 }
3607 }
3609 # The remaining definitions are only required when a dist target is used.
3610 return if option 'no-dist';
3612 # At least one of the archive formats must be enabled.
3613 if ($relative_dir eq '.')
3614 {
3615 my $archive_defined = option 'no-dist-gzip' ? 0 : 1;
3616 $archive_defined ||=
3617 grep { option "dist-$_" } qw(shar zip tarZ bzip2 lzma);
3618 error (option 'no-dist-gzip',
3619 "no-dist-gzip specified but no dist-* specified, "
3620 . "at least one archive format must be enabled")
3621 unless $archive_defined;
3622 }
3624 # Look for common files that should be included in distribution.
3625 # If the aux dir is set, and it does not have a Makefile.am, then
3626 # we check for these files there as well.
3627 my $check_aux = 0;
3628 if ($relative_dir eq '.'
3629 && $config_aux_dir_set_in_configure_ac)
3630 {
3631 if (! &is_make_dir ($config_aux_dir))
3632 {
3633 $check_aux = 1;
3634 }
3635 }
3636 foreach my $cfile (@common_files)
3637 {
3638 if (dir_has_case_matching_file ($relative_dir, $cfile)
3639 # The file might be absent, but if it can be built it's ok.
3640 || rule $cfile)
3641 {
3642 &push_dist_common ($cfile);
3643 }
3645 # Don't use `elsif' here because a file might meaningfully
3646 # appear in both directories.
3647 if ($check_aux && dir_has_case_matching_file ($config_aux_dir, $cfile))
3648 {
3649 &push_dist_common ("$config_aux_dir/$cfile")
3650 }
3651 }
3653 # We might copy elements from $configure_dist_common to
3654 # %dist_common if we think we need to. If the file appears in our
3655 # directory, we would have discovered it already, so we don't
3656 # check that. But if the file is in a subdir without a Makefile,
3657 # we want to distribute it here if we are doing `.'. Ugly!
3658 if ($relative_dir eq '.')
3659 {
3660 foreach my $file (split (' ' , $configure_dist_common))
3661 {
3662 push_dist_common ($file)
3663 unless is_make_dir (dirname ($file));
3664 }
3665 }
3667 # Files to distributed. Don't use ->value_as_list_recursive
3668 # as it recursively expands `$(dist_pkgdata_DATA)' etc.
3669 my @dist_common = split (' ', rvar ('DIST_COMMON')->variable_value);
3670 @dist_common = uniq (sort for_dist_common (@dist_common));
3671 variable_delete 'DIST_COMMON';
3672 define_pretty_variable ('DIST_COMMON', TRUE, INTERNAL, @dist_common);
3674 # Now that we've processed DIST_COMMON, disallow further attempts
3675 # to set it.
3676 $handle_dist_run = 1;
3678 # Scan EXTRA_DIST to see if we need to distribute anything from a
3679 # subdir. If so, add it to the list. I didn't want to do this
3680 # originally, but there were so many requests that I finally
3681 # relented.
3682 my $extra_dist = var ('EXTRA_DIST');
3684 $transform{'DISTCHECK-HOOK'} = !! rule 'distcheck-hook';
3685 $transform{'GETTEXT'} = $seen_gettext && !$seen_gettext_external;
3687 # If the target `dist-hook' exists, make sure it is run. This
3688 # allows users to do random weird things to the distribution
3689 # before it is packaged up.
3690 push (@dist_targets, 'dist-hook')
3691 if user_phony_rule 'dist-hook';
3692 $transform{'DIST-TARGETS'} = join (' ', @dist_targets);
3694 my $flm = option ('filename-length-max');
3695 my $filename_filter = $flm ? '.' x $flm->[1] : '';
3697 $output_rules .= &file_contents ('distdir',
3698 new Automake::Location,
3699 %transform,
3700 FILENAME_FILTER => $filename_filter);
3701 }
3704 # check_directory ($NAME, $WHERE)
3705 # -------------------------------
3706 # Ensure $NAME is a directory, and that it uses sane name.
3707 # Use $WHERE as a location in the diagnostic, if any.
3708 sub check_directory ($$)
3709 {
3710 my ($dir, $where) = @_;
3712 error $where, "required directory $relative_dir/$dir does not exist"
3713 unless -d "$relative_dir/$dir";
3715 # If an `obj/' directory exists, BSD make will enter it before
3716 # reading `Makefile'. Hence the `Makefile' in the current directory
3717 # will not be read.
3718 #
3719 # % cat Makefile
3720 # all:
3721 # echo Hello
3722 # % cat obj/Makefile
3723 # all:
3724 # echo World
3725 # % make # GNU make
3726 # echo Hello
3727 # Hello
3728 # % pmake # BSD make
3729 # echo World
3730 # World
3731 msg ('portability', $where,
3732 "naming a subdirectory `obj' causes troubles with BSD make")
3733 if $dir eq 'obj';
3735 # `aux' is probably the most important of the following forbidden name,
3736 # since it's tempting to use it as an AC_CONFIG_AUX_DIR.
3737 msg ('portability', $where,
3738 "name `$dir' is reserved on W32 and DOS platforms")
3739 if grep (/^\Q$dir\E$/i, qw/aux lpt1 lpt2 lpt3 com1 com2 com3 com4 con prn/);
3740 }
3742 # check_directories_in_var ($VARIABLE)
3743 # ------------------------------------
3744 # Recursively check all items in variables $VARIABLE as directories
3745 sub check_directories_in_var ($)
3746 {
3747 my ($var) = @_;
3748 $var->traverse_recursively
3749 (sub
3750 {
3751 my ($var, $val, $cond, $full_cond) = @_;
3752 check_directory ($val, $var->rdef ($cond)->location);
3753 return ();
3754 },
3755 undef,
3756 skip_ac_subst => 1);
3757 }
3759 # &handle_subdirs ()
3760 # ------------------
3761 # Handle subdirectories.
3762 sub handle_subdirs ()
3763 {
3764 my $subdirs = var ('SUBDIRS');
3765 return
3766 unless $subdirs;
3768 check_directories_in_var $subdirs;
3770 my $dsubdirs = var ('DIST_SUBDIRS');
3771 check_directories_in_var $dsubdirs
3772 if $dsubdirs;
3774 $output_rules .= &file_contents ('subdirs', new Automake::Location);
3775 rvar ('RECURSIVE_TARGETS')->rdef (TRUE)->{'pretty'} = VAR_SORTED; # Gross!
3776 }
3779 # ($REGEN, @DEPENDENCIES)
3780 # &scan_aclocal_m4
3781 # ----------------
3782 # If aclocal.m4 creation is automated, return the list of its dependencies.
3783 sub scan_aclocal_m4 ()
3784 {
3785 my $regen_aclocal = 0;
3787 set_seen 'CONFIG_STATUS_DEPENDENCIES';
3788 set_seen 'CONFIGURE_DEPENDENCIES';
3790 if (-f 'aclocal.m4')
3791 {
3792 &define_variable ("ACLOCAL_M4", '$(top_srcdir)/aclocal.m4', INTERNAL);
3794 my $aclocal = new Automake::XFile "< aclocal.m4";
3795 my $line = $aclocal->getline;
3796 $regen_aclocal = $line =~ 'generated automatically by aclocal';
3797 }
3799 my @ac_deps = ();
3801 if (set_seen ('ACLOCAL_M4_SOURCES'))
3802 {
3803 push (@ac_deps, '$(ACLOCAL_M4_SOURCES)');
3804 msg_var ('obsolete', 'ACLOCAL_M4_SOURCES',
3805 "`ACLOCAL_M4_SOURCES' is obsolete.\n"
3806 . "It should be safe to simply remove it.");
3807 }
3809 # Note that it might be possible that aclocal.m4 doesn't exist but
3810 # should be auto-generated. This case probably isn't very
3811 # important.
3813 return ($regen_aclocal, @ac_deps);
3814 }
3817 # Helper function for substitute_ac_subst_variables.
3818 sub substitute_ac_subst_variables_worker($)
3819 {
3820 my ($token) = @_;
3821 return "\@$token\@" if var $token;
3822 return "\${$token\}";
3823 }
3825 # substitute_ac_subst_variables ($TEXT)
3826 # -------------------------------------
3827 # Replace any occurrence of ${FOO} in $TEXT by @FOO@ if FOO is an AC_SUBST
3828 # variable.
3829 sub substitute_ac_subst_variables ($)
3830 {
3831 my ($text) = @_;
3832 $text =~ s/\${([^ \t=:+{}]+)}/&substitute_ac_subst_variables_worker ($1)/ge;
3833 return $text;
3834 }
3836 # @DEPENDENCIES
3837 # &prepend_srcdir (@INPUTS)
3838 # -------------------------
3839 # Prepend $(srcdir) or $(top_srcdir) to all @INPUTS. The idea is that
3840 # if an input file has a directory part the same as the current
3841 # directory, then the directory part is simply replaced by $(srcdir).
3842 # But if the directory part is different, then $(top_srcdir) is
3843 # prepended.
3844 sub prepend_srcdir (@)
3845 {
3846 my (@inputs) = @_;
3847 my @newinputs;
3849 foreach my $single (@inputs)
3850 {
3851 if (dirname ($single) eq $relative_dir)
3852 {
3853 push (@newinputs, '$(srcdir)/' . basename ($single));
3854 }
3855 else
3856 {
3857 push (@newinputs, '$(top_srcdir)/' . $single);
3858 }
3859 }
3860 return @newinputs;
3861 }
3863 # @DEPENDENCIES
3864 # rewrite_inputs_into_dependencies ($OUTPUT, @INPUTS)
3865 # ---------------------------------------------------
3866 # Compute a list of dependencies appropriate for the rebuild
3867 # rule of
3868 # AC_CONFIG_FILES($OUTPUT:$INPUT[0]:$INPUTS[1]:...)
3869 # Also distribute $INPUTs which are not build by another AC_CONFIG_FILES.
3870 sub rewrite_inputs_into_dependencies ($@)
3871 {
3872 my ($file, @inputs) = @_;
3873 my @res = ();
3875 for my $i (@inputs)
3876 {
3877 # We cannot create dependencies on shell variables.
3878 next if (substitute_ac_subst_variables $i) =~ /\$/;
3880 if (exists $ac_config_files_location{$i})
3881 {
3882 my $di = dirname $i;
3883 if ($di eq $relative_dir)
3884 {
3885 $i = basename $i;
3886 }
3887 # In the top-level Makefile we do not use $(top_builddir), because
3888 # we are already there, and since the targets are built without
3889 # a $(top_builddir), it helps BSD Make to match them with
3890 # dependencies.
3891 elsif ($relative_dir ne '.')
3892 {
3893 $i = '$(top_builddir)/' . $i;
3894 }
3895 }
3896 else
3897 {
3898 msg ('error', $ac_config_files_location{$file},
3899 "required file `$i' not found")
3900 unless $i =~ /\$/ || exists $output_files{$i} || -f $i;
3901 ($i) = prepend_srcdir ($i);
3902 push_dist_common ($i);
3903 }
3904 push @res, $i;
3905 }
3906 return @res;
3907 }
3911 # &handle_configure ($MAKEFILE_AM, $MAKEFILE_IN, $MAKEFILE, @INPUTS)
3912 # ------------------------------------------------------------------
3913 # Handle remaking and configure stuff.
3914 # We need the name of the input file, to do proper remaking rules.
3915 sub handle_configure ($$$@)
3916 {
3917 my ($makefile_am, $makefile_in, $makefile, @inputs) = @_;
3919 prog_error 'empty @inputs'
3920 unless @inputs;
3922 my ($rel_makefile_am, $rel_makefile_in) = prepend_srcdir ($makefile_am,
3923 $makefile_in);
3924 my $rel_makefile = basename $makefile;
3926 my $colon_infile = ':' . join (':', @inputs);
3927 $colon_infile = '' if $colon_infile eq ":$makefile.in";
3928 my @rewritten = rewrite_inputs_into_dependencies ($makefile, @inputs);
3929 my ($regen_aclocal_m4, @aclocal_m4_deps) = scan_aclocal_m4;
3930 define_pretty_variable ('am__aclocal_m4_deps', TRUE, INTERNAL,
3931 @configure_deps, @aclocal_m4_deps,
3932 '$(top_srcdir)/' . $configure_ac);
3933 my @configuredeps = ('$(am__aclocal_m4_deps)', '$(CONFIGURE_DEPENDENCIES)');
3934 push @configuredeps, '$(ACLOCAL_M4)' if -f 'aclocal.m4';
3935 define_pretty_variable ('am__configure_deps', TRUE, INTERNAL,
3936 @configuredeps);
3938 $output_rules .= file_contents
3939 ('configure',
3940 new Automake::Location,
3941 MAKEFILE => $rel_makefile,
3942 'MAKEFILE-DEPS' => "@rewritten",
3943 'CONFIG-MAKEFILE' => ($relative_dir eq '.') ? '$@' : '$(subdir)/$@',
3944 'MAKEFILE-IN' => $rel_makefile_in,
3945 'MAKEFILE-IN-DEPS' => "@include_stack",
3946 'MAKEFILE-AM' => $rel_makefile_am,
3947 STRICTNESS => global_option 'cygnus'
3948 ? 'cygnus' : $strictness_name,
3949 'USE-DEPS' => global_option 'no-dependencies'
3950 ? ' --ignore-deps' : '',
3951 'MAKEFILE-AM-SOURCES' => "$makefile$colon_infile",
3952 'REGEN-ACLOCAL-M4' => $regen_aclocal_m4);
3954 if ($relative_dir eq '.')
3955 {
3956 &push_dist_common ('acconfig.h')
3957 if -f 'acconfig.h';
3958 }
3960 # If we have a configure header, require it.
3961 my $hdr_index = 0;
3962 my @distclean_config;
3963 foreach my $spec (@config_headers)
3964 {
3965 $hdr_index += 1;
3966 # $CONFIG_H_PATH: config.h from top level.
3967 my ($config_h_path, @ins) = split_config_file_spec ($spec);
3968 my $config_h_dir = dirname ($config_h_path);
3970 # If the header is in the current directory we want to build
3971 # the header here. Otherwise, if we're at the topmost
3972 # directory and the header's directory doesn't have a
3973 # Makefile, then we also want to build the header.
3974 if ($relative_dir eq $config_h_dir
3975 || ($relative_dir eq '.' && ! &is_make_dir ($config_h_dir)))
3976 {
3977 my ($cn_sans_dir, $stamp_dir);
3978 if ($relative_dir eq $config_h_dir)
3979 {
3980 $cn_sans_dir = basename ($config_h_path);
3981 $stamp_dir = '';
3982 }
3983 else
3984 {
3985 $cn_sans_dir = $config_h_path;
3986 if ($config_h_dir eq '.')
3987 {
3988 $stamp_dir = '';
3989 }
3990 else
3991 {
3992 $stamp_dir = $config_h_dir . '/';
3993 }
3994 }
3996 # This will also distribute all inputs.
3997 @ins = rewrite_inputs_into_dependencies ($config_h_path, @ins);
3999 # Cannot define rebuild rules for filenames with shell variables.
4000 next if (substitute_ac_subst_variables $config_h_path) =~ /\$/;
4002 # Header defined in this directory.
4003 my @files;
4004 if (-f $config_h_path . '.top')
4005 {
4006 push (@files, "$cn_sans_dir.top");
4007 }
4008 if (-f $config_h_path . '.bot')
4009 {
4010 push (@files, "$cn_sans_dir.bot");
4011 }
4013 push_dist_common (@files);
4015 # For now, acconfig.h can only appear in the top srcdir.
4016 if (-f 'acconfig.h')
4017 {
4018 push (@files, '$(top_srcdir)/acconfig.h');
4019 }
4021 my $stamp = "${stamp_dir}stamp-h${hdr_index}";
4022 $output_rules .=
4023 file_contents ('remake-hdr',
4024 new Automake::Location,
4025 FILES => "@files",
4026 CONFIG_H => $cn_sans_dir,
4027 CONFIG_HIN => $ins[0],
4028 CONFIG_H_DEPS => "@ins",
4029 CONFIG_H_PATH => $config_h_path,
4030 STAMP => "$stamp");
4032 push @distclean_config, $cn_sans_dir, $stamp;
4033 }
4034 }
4036 $output_rules .= file_contents ('clean-hdr',
4037 new Automake::Location,
4038 FILES => "@distclean_config")
4039 if @distclean_config;
4041 # Distribute and define mkinstalldirs only if it is already present
4042 # in the package, for backward compatibility (some people may still
4043 # use $(mkinstalldirs)).
4044 my $mkidpath = "$config_aux_dir/mkinstalldirs";
4045 if (-f $mkidpath)
4046 {
4047 # Use require_file so that any existing script gets updated
4048 # by --force-missing.
4049 require_conf_file ($mkidpath, FOREIGN, 'mkinstalldirs');
4050 define_variable ('mkinstalldirs',
4051 "\$(SHELL) $am_config_aux_dir/mkinstalldirs", INTERNAL);
4052 }
4053 else
4054 {
4055 # Use $(install_sh), not $(MKDIR_P) because the latter requires
4056 # at least one argument, and $(mkinstalldirs) used to work
4057 # even without arguments (e.g. $(mkinstalldirs) $(conditional_dir)).
4058 define_variable ('mkinstalldirs', '$(install_sh) -d', INTERNAL);
4059 }
4061 reject_var ('CONFIG_HEADER',
4062 "`CONFIG_HEADER' is an anachronism; now determined "
4063 . "automatically\nfrom `$configure_ac'");
4065 my @config_h;
4066 foreach my $spec (@config_headers)
4067 {
4068 my ($out, @ins) = split_config_file_spec ($spec);
4069 # Generate CONFIG_HEADER define.
4070 if ($relative_dir eq dirname ($out))
4071 {
4072 push @config_h, basename ($out);
4073 }
4074 else
4075 {
4076 push @config_h, "\$(top_builddir)/$out";
4077 }
4078 }
4079 define_variable ("CONFIG_HEADER", "@config_h", INTERNAL)
4080 if @config_h;
4082 # Now look for other files in this directory which must be remade
4083 # by config.status, and generate rules for them.
4084 my @actual_other_files = ();
4085 foreach my $lfile (@other_input_files)
4086 {
4087 my $file;
4088 my @inputs;
4089 if ($lfile =~ /^([^:]*):(.*)$/)
4090 {
4091 # This is the ":" syntax of AC_OUTPUT.
4092 $file = $1;
4093 @inputs = split (':', $2);
4094 }
4095 else
4096 {
4097 # Normal usage.
4098 $file = $lfile;
4099 @inputs = $file . '.in';
4100 }
4102 # Automake files should not be stored in here, but in %MAKE_LIST.
4103 prog_error ("$lfile in \@other_input_files\n"
4104 . "\@other_input_files = (@other_input_files)")
4105 if -f $file . '.am';
4107 my $local = basename ($file);
4109 # We skip files that aren't in this directory. However, if
4110 # the file's directory does not have a Makefile, and we are
4111 # currently doing `.', then we create a rule to rebuild the
4112 # file in the subdir.
4113 my $fd = dirname ($file);
4114 if ($fd ne $relative_dir)
4115 {
4116 if ($relative_dir eq '.' && ! &is_make_dir ($fd))
4117 {
4118 $local = $file;
4119 }
4120 else
4121 {
4122 next;
4123 }
4124 }
4126 my @rewritten_inputs = rewrite_inputs_into_dependencies ($file, @inputs);
4128 # Cannot output rules for shell variables.
4129 next if (substitute_ac_subst_variables $local) =~ /\$/;
4131 $output_rules .= ($local . ': '
4132 . '$(top_builddir)/config.status '
4133 . "@rewritten_inputs\n"
4134 . "\t"
4135 . 'cd $(top_builddir) && '
4136 . '$(SHELL) ./config.status '
4137 . ($relative_dir eq '.' ? '' : '$(subdir)/')
4138 . '$@'
4139 . "\n");
4140 push (@actual_other_files, $local);
4141 }
4143 # For links we should clean destinations and distribute sources.
4144 foreach my $spec (@config_links)
4145 {
4146 my ($link, $file) = split /:/, $spec;
4147 # Some people do AC_CONFIG_LINKS($computed). We only handle
4148 # the DEST:SRC form.
4149 next unless $file;
4150 my $where = $ac_config_files_location{$link};
4152 # Skip destinations that contain shell variables.
4153 if ((substitute_ac_subst_variables $link) !~ /\$/)
4154 {
4155 # We skip links that aren't in this directory. However, if
4156 # the link's directory does not have a Makefile, and we are
4157 # currently doing `.', then we add the link to CONFIG_CLEAN_FILES
4158 # in `.'s Makefile.in.
4159 my $local = basename ($link);
4160 my $fd = dirname ($link);
4161 if ($fd ne $relative_dir)
4162 {
4163 if ($relative_dir eq '.' && ! &is_make_dir ($fd))
4164 {
4165 $local = $link;
4166 }
4167 else
4168 {
4169 $local = undef;
4170 }
4171 }
4172 push @actual_other_files, $local if $local;
4173 }
4175 # Do not process sources that contain shell variables.
4176 if ((substitute_ac_subst_variables $file) !~ /\$/)
4177 {
4178 my $fd = dirname ($file);
4180 # We distribute files that are in this directory.
4181 # At the top-level (`.') we also distribute files whose
4182 # directory does not have a Makefile.
4183 if (($fd eq $relative_dir)
4184 || ($relative_dir eq '.' && ! &is_make_dir ($fd)))
4185 {
4186 # The following will distribute $file as a side-effect when
4187 # it is appropriate (i.e., when $file is not already an output).
4188 # We do not need the result, just the side-effect.
4189 rewrite_inputs_into_dependencies ($link, $file);
4190 }
4191 }
4192 }
4194 # These files get removed by "make distclean".
4195 define_pretty_variable ('CONFIG_CLEAN_FILES', TRUE, INTERNAL,
4196 @actual_other_files);
4197 }
4199 # Handle C headers.
4200 sub handle_headers
4201 {
4202 my @r = &am_install_var ('-defaultdist', 'header', 'HEADERS', 'include',
4203 'oldinclude', 'pkginclude',
4204 'noinst', 'check');
4205 foreach (@r)
4206 {
4207 next unless $_->[1] =~ /\..*$/;
4208 &saw_extension ($&);
4209 }
4210 }
4212 sub handle_gettext
4213 {
4214 return if ! $seen_gettext || $relative_dir ne '.';
4216 my $subdirs = var 'SUBDIRS';
4218 if (! $subdirs)
4219 {
4220 err_ac "AM_GNU_GETTEXT used but SUBDIRS not defined";
4221 return;
4222 }
4224 # Perform some sanity checks to help users get the right setup.
4225 # We disable these tests when po/ doesn't exist in order not to disallow
4226 # unusual gettext setups.
4227 #
4228 # Bruno Haible:
4229 # | The idea is:
4230 # |
4231 # | 1) If a package doesn't have a directory po/ at top level, it
4232 # | will likely have multiple po/ directories in subpackages.
4233 # |
4234 # | 2) It is useful to warn for the absence of intl/ if AM_GNU_GETTEXT
4235 # | is used without 'external'. It is also useful to warn for the
4236 # | presence of intl/ if AM_GNU_GETTEXT([external]) is used. Both
4237 # | warnings apply only to the usual layout of packages, therefore
4238 # | they should both be disabled if no po/ directory is found at
4239 # | top level.
4241 if (-d 'po')
4242 {
4243 my @subdirs = $subdirs->value_as_list_recursive;
4245 msg_var ('syntax', $subdirs,
4246 "AM_GNU_GETTEXT used but `po' not in SUBDIRS")
4247 if ! grep ($_ eq 'po', @subdirs);
4249 # intl/ is not required when AM_GNU_GETTEXT is called with the
4250 # `external' option and AM_GNU_GETTEXT_INTL_SUBDIR is not called.
4251 msg_var ('syntax', $subdirs,
4252 "AM_GNU_GETTEXT used but `intl' not in SUBDIRS")
4253 if (! ($seen_gettext_external && ! $seen_gettext_intl)
4254 && ! grep ($_ eq 'intl', @subdirs));
4256 # intl/ should not be used with AM_GNU_GETTEXT([external]), except
4257 # if AM_GNU_GETTEXT_INTL_SUBDIR is called.
4258 msg_var ('syntax', $subdirs,
4259 "`intl' should not be in SUBDIRS when "
4260 . "AM_GNU_GETTEXT([external]) is used")
4261 if ($seen_gettext_external && ! $seen_gettext_intl
4262 && grep ($_ eq 'intl', @subdirs));
4263 }
4265 require_file ($ac_gettext_location, GNU, 'ABOUT-NLS');
4266 }
4268 # Handle footer elements.
4269 sub handle_footer
4270 {
4271 reject_rule ('.SUFFIXES',
4272 "use variable `SUFFIXES', not target `.SUFFIXES'");
4274 # Note: AIX 4.1 /bin/make will fail if any suffix rule appears
4275 # before .SUFFIXES. So we make sure that .SUFFIXES appears before
4276 # anything else, by sticking it right after the default: target.
4277 $output_header .= ".SUFFIXES:\n";
4278 my $suffixes = var 'SUFFIXES';
4279 my @suffixes = Automake::Rule::suffixes;
4280 if (@suffixes || $suffixes)
4281 {
4282 # Make sure SUFFIXES has unique elements. Sort them to ensure
4283 # the output remains consistent. However, $(SUFFIXES) is
4284 # always at the start of the list, unsorted. This is done
4285 # because make will choose rules depending on the ordering of
4286 # suffixes, and this lets the user have some control. Push
4287 # actual suffixes, and not $(SUFFIXES). Some versions of make
4288 # do not like variable substitutions on the .SUFFIXES line.
4289 my @user_suffixes = ($suffixes
4290 ? $suffixes->value_as_list_recursive : ());
4292 my %suffixes = map { $_ => 1 } @suffixes;
4293 delete @suffixes{@user_suffixes};
4295 $output_header .= (".SUFFIXES: "
4296 . join (' ', @user_suffixes, sort keys %suffixes)
4297 . "\n");
4298 }
4300 $output_trailer .= file_contents ('footer', new Automake::Location);
4301 }
4304 # Generate `make install' rules.
4305 sub handle_install ()
4306 {
4307 $output_rules .= &file_contents
4308 ('install',
4309 new Automake::Location,
4310 maybe_BUILT_SOURCES => (set_seen ('BUILT_SOURCES')
4311 ? (" \$(BUILT_SOURCES)\n"
4312 . "\t\$(MAKE) \$(AM_MAKEFLAGS)")
4313 : ''),
4314 'installdirs-local' => (user_phony_rule 'installdirs-local'
4315 ? ' installdirs-local' : ''),
4316 am__installdirs => variable_value ('am__installdirs') || '');
4317 }
4320 # Deal with all and all-am.
4321 sub handle_all ($)
4322 {
4323 my ($makefile) = @_;
4325 # Output `all-am'.
4327 # Put this at the beginning for the sake of non-GNU makes. This
4328 # is still wrong if these makes can run parallel jobs. But it is
4329 # right enough.
4330 unshift (@all, basename ($makefile));
4332 foreach my $spec (@config_headers)
4333 {
4334 my ($out, @ins) = split_config_file_spec ($spec);
4335 push (@all, basename ($out))
4336 if dirname ($out) eq $relative_dir;
4337 }
4339 # Install `all' hooks.
4340 push (@all, "all-local")
4341 if user_phony_rule "all-local";
4343 &pretty_print_rule ("all-am:", "\t\t", @all);
4344 &depend ('.PHONY', 'all-am', 'all');
4347 # Output `all'.
4349 my @local_headers = ();
4350 push @local_headers, '$(BUILT_SOURCES)'
4351 if var ('BUILT_SOURCES');
4352 foreach my $spec (@config_headers)
4353 {
4354 my ($out, @ins) = split_config_file_spec ($spec);
4355 push @local_headers, basename ($out)
4356 if dirname ($out) eq $relative_dir;
4357 }
4359 if (@local_headers)
4360 {
4361 # We need to make sure config.h is built before we recurse.
4362 # We also want to make sure that built sources are built
4363 # before any ordinary `all' targets are run. We can't do this
4364 # by changing the order of dependencies to the "all" because
4365 # that breaks when using parallel makes. Instead we handle
4366 # things explicitly.
4367 $output_all .= ("all: @local_headers"
4368 . "\n\t"
4369 . '$(MAKE) $(AM_MAKEFLAGS) '
4370 . (var ('SUBDIRS') ? 'all-recursive' : 'all-am')
4371 . "\n\n");
4372 }
4373 else
4374 {
4375 $output_all .= "all: " . (var ('SUBDIRS')
4376 ? 'all-recursive' : 'all-am') . "\n\n";
4377 }
4378 }
4381 # &do_check_merge_target ()
4382 # -------------------------
4383 # Handle check merge target specially.
4384 sub do_check_merge_target ()
4385 {
4386 # Include user-defined local form of target.
4387 push @check_tests, 'check-local'
4388 if user_phony_rule 'check-local';
4390 # In --cygnus mode, check doesn't depend on all.
4391 if (option 'cygnus')
4392 {
4393 # Just run the local check rules.
4394 pretty_print_rule ('check-am:', "\t\t", @check);
4395 }
4396 else
4397 {
4398 # The check target must depend on the local equivalent of
4399 # `all', to ensure all the primary targets are built. Then it
4400 # must build the local check rules.
4401 $output_rules .= "check-am: all-am\n";
4402 pretty_print_rule ("\t\$(MAKE) \$(AM_MAKEFLAGS)", "\t ",
4403 @check)
4404 if @check;
4405 }
4406 pretty_print_rule ("\t\$(MAKE) \$(AM_MAKEFLAGS)", "\t ",
4407 @check_tests)
4408 if @check_tests;
4410 depend '.PHONY', 'check', 'check-am';
4411 # Handle recursion. We have to honor BUILT_SOURCES like for `all:'.
4412 $output_rules .= ("check: "
4413 . (var ('BUILT_SOURCES')
4414 ? "\$(BUILT_SOURCES)\n\t\$(MAKE) \$(AM_MAKEFLAGS) "
4415 : '')
4416 . (var ('SUBDIRS') ? 'check-recursive' : 'check-am')
4417 . "\n");
4418 }
4420 # handle_clean ($MAKEFILE)
4421 # ------------------------
4422 # Handle all 'clean' targets.
4423 sub handle_clean ($)
4424 {
4425 my ($makefile) = @_;
4427 # Clean the files listed in user variables if they exist.
4428 $clean_files{'$(MOSTLYCLEANFILES)'} = MOSTLY_CLEAN
4429 if var ('MOSTLYCLEANFILES');
4430 $clean_files{'$(CLEANFILES)'} = CLEAN
4431 if var ('CLEANFILES');
4432 $clean_files{'$(DISTCLEANFILES)'} = DIST_CLEAN
4433 if var ('DISTCLEANFILES');
4434 $clean_files{'$(MAINTAINERCLEANFILES)'} = MAINTAINER_CLEAN
4435 if var ('MAINTAINERCLEANFILES');
4437 # Built sources are automatically removed by maintainer-clean.
4438 $clean_files{'$(BUILT_SOURCES)'} = MAINTAINER_CLEAN
4439 if var ('BUILT_SOURCES');
4441 # Compute a list of "rm"s to run for each target.
4442 my %rms = (MOSTLY_CLEAN, [],
4443 CLEAN, [],
4444 DIST_CLEAN, [],
4445 MAINTAINER_CLEAN, []);
4447 foreach my $file (keys %clean_files)
4448 {
4449 my $when = $clean_files{$file};
4450 prog_error 'invalid entry in %clean_files'
4451 unless exists $rms{$when};
4453 my $rm = "rm -f $file";
4454 # If file is a variable, make sure when don't call `rm -f' without args.
4455 $rm ="test -z \"$file\" || $rm"
4456 if ($file =~ /^\s*\$(\(.*\)|\{.*\})\s*$/);
4458 push @{$rms{$when}}, "\t-$rm\n";
4459 }
4461 $output_rules .= &file_contents
4462 ('clean',
4463 new Automake::Location,
4464 MOSTLYCLEAN_RMS => join ('', sort @{$rms{&MOSTLY_CLEAN}}),
4465 CLEAN_RMS => join ('', sort @{$rms{&CLEAN}}),
4466 DISTCLEAN_RMS => join ('', sort @{$rms{&DIST_CLEAN}}),
4467 MAINTAINER_CLEAN_RMS => join ('', sort @{$rms{&MAINTAINER_CLEAN}}),
4468 MAKEFILE => basename $makefile,
4469 );
4470 }
4473 # &target_cmp ($A, $B)
4474 # --------------------
4475 # Subroutine for &handle_factored_dependencies to let `.PHONY' and
4476 # other `.TARGETS' be last.
4477 sub target_cmp
4478 {
4479 return 0 if $a eq $b;
4481 my $a1 = substr ($a, 0, 1);
4482 my $b1 = substr ($b, 0, 1);
4483 if ($a1 ne $b1)
4484 {
4485 return -1 if $b1 eq '.';
4486 return 1 if $a1 eq '.';
4487 }
4488 return $a cmp $b;
4489 }
4492 # &handle_factored_dependencies ()
4493 # --------------------------------
4494 # Handle everything related to gathered targets.
4495 sub handle_factored_dependencies
4496 {
4497 # Reject bad hooks.
4498 foreach my $utarg ('uninstall-data-local', 'uninstall-data-hook',
4499 'uninstall-exec-local', 'uninstall-exec-hook',
4500 'uninstall-dvi-local',
4501 'uninstall-html-local',
4502 'uninstall-info-local',
4503 'uninstall-pdf-local',
4504 'uninstall-ps-local')
4505 {
4506 my $x = $utarg;
4507 $x =~ s/-.*-/-/;
4508 reject_rule ($utarg, "use `$x', not `$utarg'");
4509 }
4511 reject_rule ('install-local',
4512 "use `install-data-local' or `install-exec-local', "
4513 . "not `install-local'");
4515 reject_rule ('install-hook',
4516 "use `install-data-hook' or `install-exec-hook', "
4517 . "not `install-hook'");
4519 # Install the -local hooks.
4520 foreach (keys %dependencies)
4521 {
4522 # Hooks are installed on the -am targets.
4523 s/-am$// or next;
4524 depend ("$_-am", "$_-local")
4525 if user_phony_rule "$_-local";
4526 }
4528 # Install the -hook hooks.
4529 # FIXME: Why not be as liberal as we are with -local hooks?
4530 foreach ('install-exec', 'install-data', 'uninstall')
4531 {
4532 if (user_phony_rule "$_-hook")
4533 {
4534 $actions{"$_-am"} .=
4535 ("\t\@\$(NORMAL_INSTALL)\n"
4536 . "\t" . '$(MAKE) $(AM_MAKEFLAGS) ' . "$_-hook\n");
4537 depend ('.MAKE', "$_-am");
4538 }
4539 }
4541 # All the required targets are phony.
4542 depend ('.PHONY', keys %required_targets);
4544 # Actually output gathered targets.
4545 foreach (sort target_cmp keys %dependencies)
4546 {
4547 # If there is nothing about this guy, skip it.
4548 next
4549 unless (@{$dependencies{$_}}
4550 || $actions{$_}
4551 || $required_targets{$_});
4553 # Define gathered targets in undefined conditions.
4554 # FIXME: Right now we must handle .PHONY as an exception,
4555 # because people write things like
4556 # .PHONY: myphonytarget
4557 # to append dependencies. This would not work if Automake
4558 # refrained from defining its own .PHONY target as it does
4559 # with other overridden targets.
4560 # Likewise for `.MAKE'.
4561 my @undefined_conds = (TRUE,);
4562 if ($_ ne '.PHONY' && $_ ne '.MAKE')
4563 {
4564 @undefined_conds =
4565 Automake::Rule::define ($_, 'internal',
4566 RULE_AUTOMAKE, TRUE, INTERNAL);
4567 }
4568 my @uniq_deps = uniq (sort @{$dependencies{$_}});
4569 foreach my $cond (@undefined_conds)
4570 {
4571 my $condstr = $cond->subst_string;
4572 &pretty_print_rule ("$condstr$_:", "$condstr\t", @uniq_deps);
4573 $output_rules .= $actions{$_} if defined $actions{$_};
4574 $output_rules .= "\n";
4575 }
4576 }
4577 }
4580 # &handle_tests_dejagnu ()
4581 # ------------------------
4582 sub handle_tests_dejagnu
4583 {
4584 push (@check_tests, 'check-DEJAGNU');
4585 $output_rules .= file_contents ('dejagnu', new Automake::Location);
4586 }
4589 # Handle TESTS variable and other checks.
4590 sub handle_tests
4591 {
4592 if (option 'dejagnu')
4593 {
4594 &handle_tests_dejagnu;
4595 }
4596 else
4597 {
4598 foreach my $c ('DEJATOOL', 'RUNTEST', 'RUNTESTFLAGS')
4599 {
4600 reject_var ($c, "`$c' defined but `dejagnu' not in "
4601 . "`AUTOMAKE_OPTIONS'");
4602 }
4603 }
4605 if (var ('TESTS'))
4606 {
4607 push (@check_tests, 'check-TESTS');
4608 $output_rules .= &file_contents ('check', new Automake::Location,
4609 COLOR => !! option 'color-tests');
4611 # Tests that are known programs should have $(EXEEXT) appended.
4612 # For matching purposes, we need to adjust XFAIL_TESTS as well.
4613 append_exeext { exists $known_programs{$_[0]} } 'TESTS';
4614 append_exeext { exists $known_programs{$_[0]} } 'XFAIL_TESTS'
4615 if (var ('XFAIL_TESTS'));
4616 }
4617 }
4619 # Handle Emacs Lisp.
4620 sub handle_emacs_lisp
4621 {
4622 my @elfiles = &am_install_var ('-candist', 'lisp', 'LISP',
4623 'lisp', 'noinst');
4625 return if ! @elfiles;
4627 define_pretty_variable ('am__ELFILES', TRUE, INTERNAL,
4628 map { $_->[1] } @elfiles);
4629 define_pretty_variable ('am__ELCFILES', TRUE, INTERNAL,
4630 '$(am__ELFILES:.el=.elc)');
4631 # This one can be overridden by users.
4632 define_pretty_variable ('ELCFILES', TRUE, INTERNAL, '$(LISP:.el=.elc)');
4634 push @all, '$(ELCFILES)';
4636 require_variables ($elfiles[0][0], "Emacs Lisp sources seen", TRUE,
4637 'EMACS', 'lispdir');
4638 require_conf_file ($elfiles[0][0], FOREIGN, 'elisp-comp');
4639 &define_variable ('elisp_comp', "$am_config_aux_dir/elisp-comp", INTERNAL);
4640 }
4642 # Handle Python
4643 sub handle_python
4644 {
4645 my @pyfiles = &am_install_var ('-defaultdist', 'python', 'PYTHON',
4646 'noinst');
4647 return if ! @pyfiles;
4649 require_variables ($pyfiles[0][0], "Python sources seen", TRUE, 'PYTHON');
4650 require_conf_file ($pyfiles[0][0], FOREIGN, 'py-compile');
4651 &define_variable ('py_compile', "$am_config_aux_dir/py-compile", INTERNAL);
4652 }
4654 # Handle Java.
4655 sub handle_java
4656 {
4657 my @sourcelist = &am_install_var ('-candist',
4658 'java', 'JAVA',
4659 'java', 'noinst', 'check');
4660 return if ! @sourcelist;
4662 my @prefix = am_primary_prefixes ('JAVA', 1,
4663 'java', 'noinst', 'check');
4665 my $dir;
4666 foreach my $curs (@prefix)
4667 {
4668 next
4669 if $curs eq 'EXTRA';
4671 err_var "${curs}_JAVA", "multiple _JAVA primaries in use"
4672 if defined $dir;
4673 $dir = $curs;
4674 }
4677 push (@all, 'class' . $dir . '.stamp');
4678 }
4681 # Handle some of the minor options.
4682 sub handle_minor_options
4683 {
4684 if (option 'readme-alpha')
4685 {
4686 if ($relative_dir eq '.')
4687 {
4688 if ($package_version !~ /^$GNITS_VERSION_PATTERN$/)
4689 {
4690 msg ('error-gnits', $package_version_location,
4691 "version `$package_version' doesn't follow " .
4692 "Gnits standards");
4693 }
4694 if (defined $1 && -f 'README-alpha')
4695 {
4696 # This means we have an alpha release. See
4697 # GNITS_VERSION_PATTERN for details.
4698 push_dist_common ('README-alpha');
4699 }
4700 }
4701 }
4702 }
4704 ################################################################
4706 # ($OUTPUT, @INPUTS)
4707 # &split_config_file_spec ($SPEC)
4708 # -------------------------------
4709 # Decode the Autoconf syntax for config files (files, headers, links
4710 # etc.).
4711 sub split_config_file_spec ($)
4712 {
4713 my ($spec) = @_;
4714 my ($output, @inputs) = split (/:/, $spec);
4716 push @inputs, "$output.in"
4717 unless @inputs;
4719 return ($output, @inputs);
4720 }
4722 # $input
4723 # locate_am (@POSSIBLE_SOURCES)
4724 # -----------------------------
4725 # AC_CONFIG_FILES allow specifications such as Makefile:top.in:mid.in:bot.in
4726 # This functions returns the first *.in file for which a *.am exists.
4727 # It returns undef otherwise.
4728 sub locate_am (@)
4729 {
4730 my (@rest) = @_;
4731 my $input;
4732 foreach my $file (@rest)
4733 {
4734 if (($file =~ /^(.*)\.in$/) && -f "$1.am")
4735 {
4736 $input = $file;
4737 last;
4738 }
4739 }
4740 return $input;
4741 }
4743 my %make_list;
4745 # &scan_autoconf_config_files ($WHERE, $CONFIG-FILES)
4746 # ---------------------------------------------------
4747 # Study $CONFIG-FILES which is the first argument to AC_CONFIG_FILES
4748 # (or AC_OUTPUT).
4749 sub scan_autoconf_config_files ($$)
4750 {
4751 my ($where, $config_files) = @_;
4753 # Look at potential Makefile.am's.
4754 foreach (split ' ', $config_files)
4755 {
4756 # Must skip empty string for Perl 4.
4757 next if $_ eq "\\" || $_ eq '';
4759 # Handle $local:$input syntax.
4760 my ($local, @rest) = split (/:/);
4761 @rest = ("$local.in",) unless @rest;
4762 msg ('portability', $where,
4763 "Omit leading `./' from config file names such as `$local',"
4764 . "\nas not all make implementations treat `file' and `./file' equally.")
4765 if ($local =~ /^\.\//);
4766 my $input = locate_am @rest;
4767 if ($input)
4768 {
4769 # We have a file that automake should generate.
4770 $make_list{$input} = join (':', ($local, @rest));
4771 }
4772 else
4773 {
4774 # We have a file that automake should cause to be
4775 # rebuilt, but shouldn't generate itself.
4776 push (@other_input_files, $_);
4777 }
4778 $ac_config_files_location{$local} = $where;
4779 }
4780 }
4783 # &scan_autoconf_traces ($FILENAME)
4784 # ---------------------------------
4785 sub scan_autoconf_traces ($)
4786 {
4787 my ($filename) = @_;
4789 # Macros to trace, with their minimal number of arguments.
4790 #
4791 # IMPORTANT: If you add a macro here, you should also add this macro
4792 # ========= to Automake-preselection in autoconf/lib/autom4te.in.
4793 my %traced = (
4794 AC_CANONICAL_BUILD => 0,
4795 AC_CANONICAL_HOST => 0,
4796 AC_CANONICAL_TARGET => 0,
4797 AC_CONFIG_AUX_DIR => 1,
4798 AC_CONFIG_FILES => 1,
4799 AC_CONFIG_HEADERS => 1,
4800 AC_CONFIG_LIBOBJ_DIR => 1,
4801 AC_CONFIG_LINKS => 1,
4802 AC_FC_SRCEXT => 1,
4803 AC_INIT => 0,
4804 AC_LIBSOURCE => 1,
4805 AC_REQUIRE_AUX_FILE => 1,
4806 AC_SUBST_TRACE => 1,
4807 AM_AUTOMAKE_VERSION => 1,
4808 AM_CONDITIONAL => 2,
4809 AM_ENABLE_MULTILIB => 0,
4810 AM_GNU_GETTEXT => 0,
4811 AM_GNU_GETTEXT_INTL_SUBDIR => 0,
4812 AM_INIT_AUTOMAKE => 0,
4813 AM_MAINTAINER_MODE => 0,
4814 AM_PROG_CC_C_O => 0,
4815 _AM_SUBST_NOTMAKE => 1,
4816 LT_SUPPORTED_TAG => 1,
4817 _LT_AC_TAGCONFIG => 0,
4818 m4_include => 1,
4819 m4_sinclude => 1,
4820 sinclude => 1,
4821 );
4823 my $traces = ($ENV{AUTOCONF} || 'autoconf') . " ";
4825 # Use a separator unlikely to be used, not `:', the default, which
4826 # has a precise meaning for AC_CONFIG_FILES and so on.
4827 $traces .= join (' ',
4828 map { "--trace=$_" . ':\$f:\$l::\$n::\${::}%' }
4829 (keys %traced));
4831 my $tracefh = new Automake::XFile ("$traces $filename |");
4832 verb "reading $traces";
4834 while ($_ = $tracefh->getline)
4835 {
4836 chomp;
4837 my ($here, @args) = split (/::/);
4838 my $where = new Automake::Location $here;
4839 my $macro = $args[0];
4841 prog_error ("unrequested trace `$macro'")
4842 unless exists $traced{$macro};
4844 # Skip and diagnose malformed calls.
4845 if ($#args < $traced{$macro})
4846 {
4847 msg ('syntax', $where, "not enough arguments for $macro");
4848 next;
4849 }
4851 # Alphabetical ordering please.
4852 if ($macro eq 'AC_CANONICAL_BUILD')
4853 {
4854 if ($seen_canonical <= AC_CANONICAL_BUILD)
4855 {
4856 $seen_canonical = AC_CANONICAL_BUILD;
4857 $canonical_location = $where;
4858 }
4859 }
4860 elsif ($macro eq 'AC_CANONICAL_HOST')
4861 {
4862 if ($seen_canonical <= AC_CANONICAL_HOST)
4863 {
4864 $seen_canonical = AC_CANONICAL_HOST;
4865 $canonical_location = $where;
4866 }
4867 }
4868 elsif ($macro eq 'AC_CANONICAL_TARGET')
4869 {
4870 $seen_canonical = AC_CANONICAL_TARGET;
4871 $canonical_location = $where;
4872 }
4873 elsif ($macro eq 'AC_CONFIG_AUX_DIR')
4874 {
4875 if ($seen_init_automake)
4876 {
4877 error ($where, "AC_CONFIG_AUX_DIR must be called before "
4878 . "AM_INIT_AUTOMAKE...", partial => 1);
4879 error ($seen_init_automake, "... AM_INIT_AUTOMAKE called here");
4880 }
4881 $config_aux_dir = $args[1];
4882 $config_aux_dir_set_in_configure_ac = 1;
4883 $relative_dir = '.';
4884 check_directory ($config_aux_dir, $where);
4885 }
4886 elsif ($macro eq 'AC_CONFIG_FILES')
4887 {
4888 # Look at potential Makefile.am's.
4889 scan_autoconf_config_files ($where, $args[1]);
4890 }
4891 elsif ($macro eq 'AC_CONFIG_HEADERS')
4892 {
4893 foreach my $spec (split (' ', $args[1]))
4894 {
4895 my ($dest, @src) = split (':', $spec);
4896 $ac_config_files_location{$dest} = $where;
4897 push @config_headers, $spec;
4898 }
4899 }
4900 elsif ($macro eq 'AC_CONFIG_LIBOBJ_DIR')
4901 {
4902 $config_libobj_dir = $args[1];
4903 $relative_dir = '.';
4904 check_directory ($config_libobj_dir, $where);
4905 }
4906 elsif ($macro eq 'AC_CONFIG_LINKS')
4907 {
4908 foreach my $spec (split (' ', $args[1]))
4909 {
4910 my ($dest, $src) = split (':', $spec);
4911 $ac_config_files_location{$dest} = $where;
4912 push @config_links, $spec;
4913 }
4914 }
4915 elsif ($macro eq 'AC_FC_SRCEXT')
4916 {
4917 my $suffix = $args[1];
4918 # These flags are used as %SOURCEFLAG% in depend2.am,
4919 # where the trailing space is important.
4920 $sourceflags{'.' . $suffix} = '$(FCFLAGS_' . $suffix . ') '
4921 if ($suffix eq 'f90' || $suffix eq 'f95');
4922 }
4923 elsif ($macro eq 'AC_INIT')
4924 {
4925 if (defined $args[2])
4926 {
4927 $package_version = $args[2];
4928 $package_version_location = $where;
4929 }
4930 }
4931 elsif ($macro eq 'AC_LIBSOURCE')
4932 {
4933 $libsources{$args[1]} = $here;
4934 }
4935 elsif ($macro eq 'AC_REQUIRE_AUX_FILE')
4936 {
4937 # Only remember the first time a file is required.
4938 $required_aux_file{$args[1]} = $where
4939 unless exists $required_aux_file{$args[1]};
4940 }
4941 elsif ($macro eq 'AC_SUBST_TRACE')
4942 {
4943 # Just check for alphanumeric in AC_SUBST_TRACE. If you do
4944 # AC_SUBST(5), then too bad.
4945 $configure_vars{$args[1]} = $where
4946 if $args[1] =~ /^\w+$/;
4947 }
4948 elsif ($macro eq 'AM_AUTOMAKE_VERSION')
4949 {
4950 error ($where,
4951 "version mismatch. This is Automake $VERSION,\n" .
4952 "but the definition used by this AM_INIT_AUTOMAKE\n" .
4953 "comes from Automake $args[1]. You should recreate\n" .
4954 "aclocal.m4 with aclocal and run automake again.\n",
4955 # $? = 63 is used to indicate version mismatch to missing.
4956 exit_code => 63)
4957 if $VERSION ne $args[1];
4959 $seen_automake_version = 1;
4960 }
4961 elsif ($macro eq 'AM_CONDITIONAL')
4962 {
4963 $configure_cond{$args[1]} = $where;
4964 }
4965 elsif ($macro eq 'AM_ENABLE_MULTILIB')
4966 {
4967 $seen_multilib = $where;
4968 }
4969 elsif ($macro eq 'AM_GNU_GETTEXT')
4970 {
4971 $seen_gettext = $where;
4972 $ac_gettext_location = $where;
4973 $seen_gettext_external = grep ($_ eq 'external', @args);
4974 }
4975 elsif ($macro eq 'AM_GNU_GETTEXT_INTL_SUBDIR')
4976 {
4977 $seen_gettext_intl = $where;
4978 }
4979 elsif ($macro eq 'AM_INIT_AUTOMAKE')
4980 {
4981 $seen_init_automake = $where;
4982 if (defined $args[2])
4983 {
4984 $package_version = $args[2];
4985 $package_version_location = $where;
4986 }
4987 elsif (defined $args[1])
4988 {
4989 exit $exit_code
4990 if (process_global_option_list ($where,
4991 split (' ', $args[1])));
4992 }
4993 }
4994 elsif ($macro eq 'AM_MAINTAINER_MODE')
4995 {
4996 $seen_maint_mode = $where;
4997 }
4998 elsif ($macro eq 'AM_PROG_CC_C_O')
4999 {
5000 $seen_cc_c_o = $where;
5001 }
5002 elsif ($macro eq '_AM_SUBST_NOTMAKE')
5003 {
5004 $ignored_configure_vars{$args[1]} = $where;
5005 }
5006 elsif ($macro eq 'm4_include'
5007 || $macro eq 'm4_sinclude'
5008 || $macro eq 'sinclude')
5009 {
5010 # Skip missing `sinclude'd files.
5011 next if $macro ne 'm4_include' && ! -f $args[1];
5013 # Some modified versions of Autoconf don't use
5014 # frozen files. Consequently it's possible that we see all
5015 # m4_include's performed during Autoconf's startup.
5016 # Obviously we don't want to distribute Autoconf's files
5017 # so we skip absolute filenames here.
5018 push @configure_deps, '$(top_srcdir)/' . $args[1]
5019 unless $here =~ m,^(?:\w:)?[\\/],;
5020 # Keep track of the greatest timestamp.
5021 if (-e $args[1])
5022 {
5023 my $mtime = mtime $args[1];
5024 $configure_deps_greatest_timestamp = $mtime
5025 if $mtime > $configure_deps_greatest_timestamp;
5026 }
5027 }
5028 elsif ($macro eq 'LT_SUPPORTED_TAG')
5029 {
5030 $libtool_tags{$args[1]} = 1;
5031 $libtool_new_api = 1;
5032 }
5033 elsif ($macro eq '_LT_AC_TAGCONFIG')
5034 {
5035 # _LT_AC_TAGCONFIG is an old macro present in Libtool 1.5.
5036 # We use it to detect whether tags are supported. Our
5037 # preferred interface is LT_SUPPORTED_TAG, but it was
5038 # introduced in Libtool 1.6.
5039 if (0 == keys %libtool_tags)
5040 {
5041 # Hardcode the tags supported by Libtool 1.5.
5042 %libtool_tags = (CC => 1, CXX => 1, GCJ => 1, F77 => 1);
5043 }
5044 }
5045 }
5047 $tracefh->close;
5048 }
5051 # &scan_autoconf_files ()
5052 # -----------------------
5053 # Check whether we use `configure.ac' or `configure.in'.
5054 # Scan it (and possibly `aclocal.m4') for interesting things.
5055 # We must scan aclocal.m4 because there might be AC_SUBSTs and such there.
5056 sub scan_autoconf_files ()
5057 {
5058 # Reinitialize libsources here. This isn't really necessary,
5059 # since we currently assume there is only one configure.ac. But
5060 # that won't always be the case.
5061 %libsources = ();
5063 # Keep track of the youngest configure dependency.
5064 $configure_deps_greatest_timestamp = mtime $configure_ac;
5065 if (-e 'aclocal.m4')
5066 {
5067 my $mtime = mtime 'aclocal.m4';
5068 $configure_deps_greatest_timestamp = $mtime
5069 if $mtime > $configure_deps_greatest_timestamp;
5070 }
5072 scan_autoconf_traces ($configure_ac);
5074 @configure_input_files = sort keys %make_list;
5075 # Set input and output files if not specified by user.
5076 if (! @input_files)
5077 {
5078 @input_files = @configure_input_files;
5079 %output_files = %make_list;
5080 }
5083 if (! $seen_init_automake)
5084 {
5085 err_ac ("no proper invocation of AM_INIT_AUTOMAKE was found.\nYou "
5086 . "should verify that $configure_ac invokes AM_INIT_AUTOMAKE,"
5087 . "\nthat aclocal.m4 is present in the top-level directory,\n"
5088 . "and that aclocal.m4 was recently regenerated "
5089 . "(using aclocal).");
5090 }
5091 else
5092 {
5093 if (! $seen_automake_version)
5094 {
5095 if (-f 'aclocal.m4')
5096 {
5097 error ($seen_init_automake,
5098 "your implementation of AM_INIT_AUTOMAKE comes from " .
5099 "an\nold Automake version. You should recreate " .
5100 "aclocal.m4\nwith aclocal and run automake again.\n",
5101 # $? = 63 is used to indicate version mismatch to missing.
5102 exit_code => 63);
5103 }
5104 else
5105 {
5106 error ($seen_init_automake,
5107 "no proper implementation of AM_INIT_AUTOMAKE was " .
5108 "found,\nprobably because aclocal.m4 is missing...\n" .
5109 "You should run aclocal to create this file, then\n" .
5110 "run automake again.\n");
5111 }
5112 }
5113 }
5115 locate_aux_dir ();
5117 # Reorder @input_files so that the Makefile that distributes aux
5118 # files is processed last. This is important because each directory
5119 # can require auxiliary scripts and we should wait until they have
5120 # been installed before distributing them.
5122 # The Makefile.in that distribute the aux files is the one in
5123 # $config_aux_dir or the top-level Makefile.
5124 my $auxdirdist = is_make_dir ($config_aux_dir) ? $config_aux_dir : '.';
5125 my @new_input_files = ();
5126 while (@input_files)
5127 {
5128 my $in = pop @input_files;
5129 my @ins = split (/:/, $output_files{$in});
5130 if (dirname ($ins[0]) eq $auxdirdist)
5131 {
5132 push @new_input_files, $in;
5133 $automake_will_process_aux_dir = 1;
5134 }
5135 else
5136 {
5137 unshift @new_input_files, $in;
5138 }
5139 }
5140 @input_files = @new_input_files;
5142 # If neither the auxdir/Makefile nor the ./Makefile are generated
5143 # by Automake, we won't distribute the aux files anyway. Assume
5144 # the user know what (s)he does, and pretend we will distribute
5145 # them to disable the error in require_file_internal.
5146 $automake_will_process_aux_dir = 1 if ! is_make_dir ($auxdirdist);
5148 # Look for some files we need. Always check for these. This
5149 # check must be done for every run, even those where we are only
5150 # looking at a subdir Makefile. We must set relative_dir for
5151 # maybe_push_required_file to work.
5152 $relative_dir = '.';
5153 foreach my $file (keys %required_aux_file)
5154 {
5155 require_conf_file ($required_aux_file{$file}->get, FOREIGN, $file)
5156 }
5157 err_am "`install.sh' is an anachronism; use `install-sh' instead"
5158 if -f $config_aux_dir . '/install.sh';
5160 # Preserve dist_common for later.
5161 $configure_dist_common = variable_value ('DIST_COMMON') || '';
5163 }
5165 ################################################################
5167 # Set up for Cygnus mode.
5168 sub check_cygnus
5169 {
5170 my $cygnus = option 'cygnus';
5171 return unless $cygnus;
5173 set_strictness ('foreign');
5174 set_option ('no-installinfo', $cygnus);
5175 set_option ('no-dependencies', $cygnus);
5176 set_option ('no-dist', $cygnus);
5178 err_ac "`AM_MAINTAINER_MODE' required when --cygnus specified"
5179 if !$seen_maint_mode;
5180 }
5182 # Do any extra checking for GNU standards.
5183 sub check_gnu_standards
5184 {
5185 if ($relative_dir eq '.')
5186 {
5187 # In top level (or only) directory.
5188 require_file ("$am_file.am", GNU,
5189 qw/INSTALL NEWS README AUTHORS ChangeLog/);
5191 # Accept one of these three licenses; default to COPYING.
5192 # Make sure we do not overwrite an existing license.
5193 my $license;
5194 foreach (qw /COPYING COPYING.LIB COPYING.LESSER/)
5195 {
5196 if (-f $_)
5197 {
5198 $license = $_;
5199 last;
5200 }
5201 }
5202 require_file ("$am_file.am", GNU, 'COPYING')
5203 unless $license;
5204 }
5206 for my $opt ('no-installman', 'no-installinfo')
5207 {
5208 msg ('error-gnu', option $opt,
5209 "option `$opt' disallowed by GNU standards")
5210 if option $opt;
5211 }
5212 }
5214 # Do any extra checking for GNITS standards.
5215 sub check_gnits_standards
5216 {
5217 if ($relative_dir eq '.')
5218 {
5219 # In top level (or only) directory.
5220 require_file ("$am_file.am", GNITS, 'THANKS');
5221 }
5222 }
5224 ################################################################
5225 #
5226 # Functions to handle files of each language.
5228 # Each `lang_X_rewrite($DIRECTORY, $BASE, $EXT)' function follows a
5229 # simple formula: Return value is LANG_SUBDIR if the resulting object
5230 # file should be in a subdir if the source file is, LANG_PROCESS if
5231 # file is to be dealt with, LANG_IGNORE otherwise.
5233 # Much of the actual processing is handled in
5234 # handle_single_transform. These functions exist so that
5235 # auxiliary information can be recorded for a later cleanup pass.
5236 # Note that the calls to these functions are computed, so don't bother
5237 # searching for their precise names in the source.
5239 # This is just a convenience function that can be used to determine
5240 # when a subdir object should be used.
5241 sub lang_sub_obj
5242 {
5243 return option 'subdir-objects' ? LANG_SUBDIR : LANG_PROCESS;
5244 }
5246 # Rewrite a single C source file.
5247 sub lang_c_rewrite
5248 {
5249 my ($directory, $base, $ext, $nonansi_obj, $have_per_exec_flags, $var) = @_;
5251 if (option 'ansi2knr' && $base =~ /_$/)
5252 {
5253 # FIXME: include line number in error.
5254 err_am "C source file `$base.c' would be deleted by ansi2knr rules";
5255 }
5257 my $r = LANG_PROCESS;
5258 if (option 'subdir-objects')
5259 {
5260 $r = LANG_SUBDIR;
5261 if ($directory && $directory ne '.')
5262 {
5263 $base = $directory . '/' . $base;
5265 # libtool is always able to put the object at the proper place,
5266 # so we do not have to require AM_PROG_CC_C_O when building .lo files.
5267 msg_var ('portability', $var,
5268 "compiling `$base.c' in subdir requires "
5269 . "`AM_PROG_CC_C_O' in `$configure_ac'",
5270 uniq_scope => US_GLOBAL,
5271 uniq_part => 'AM_PROG_CC_C_O subdir')
5272 unless $seen_cc_c_o || $nonansi_obj eq '.lo';
5273 }
5275 # In this case we already have the directory information, so
5276 # don't add it again.
5277 $de_ansi_files{$base} = '';
5278 }
5279 else
5280 {
5281 $de_ansi_files{$base} = (($directory eq '.' || $directory eq '')
5282 ? ''
5283 : "$directory/");
5284 }
5286 if (! $seen_cc_c_o
5287 && $have_per_exec_flags
5288 && ! option 'subdir-objects'
5289 && $nonansi_obj ne '.lo')
5290 {
5291 msg_var ('portability',
5292 $var, "compiling `$base.c' with per-target flags requires "
5293 . "`AM_PROG_CC_C_O' in `$configure_ac'",
5294 uniq_scope => US_GLOBAL,
5295 uniq_part => 'AM_PROG_CC_C_O per-target')
5296 }
5298 return $r;
5299 }
5301 # Rewrite a single C++ source file.
5302 sub lang_cxx_rewrite
5303 {
5304 return &lang_sub_obj;
5305 }
5307 # Rewrite a single header file.
5308 sub lang_header_rewrite
5309 {
5310 # Header files are simply ignored.
5311 return LANG_IGNORE;
5312 }
5314 # Rewrite a single yacc file.
5315 sub lang_yacc_rewrite
5316 {
5317 my ($directory, $base, $ext) = @_;
5319 my $r = &lang_sub_obj;
5320 (my $newext = $ext) =~ tr/y/c/;
5321 return ($r, $newext);
5322 }
5324 # Rewrite a single yacc++ file.
5325 sub lang_yaccxx_rewrite
5326 {
5327 my ($directory, $base, $ext) = @_;
5329 my $r = &lang_sub_obj;
5330 (my $newext = $ext) =~ tr/y/c/;
5331 return ($r, $newext);
5332 }
5334 # Rewrite a single lex file.
5335 sub lang_lex_rewrite
5336 {
5337 my ($directory, $base, $ext) = @_;
5339 my $r = &lang_sub_obj;
5340 (my $newext = $ext) =~ tr/l/c/;
5341 return ($r, $newext);
5342 }
5344 # Rewrite a single lex++ file.
5345 sub lang_lexxx_rewrite
5346 {
5347 my ($directory, $base, $ext) = @_;
5349 my $r = &lang_sub_obj;
5350 (my $newext = $ext) =~ tr/l/c/;
5351 return ($r, $newext);
5352 }
5354 # Rewrite a single assembly file.
5355 sub lang_asm_rewrite
5356 {
5357 return &lang_sub_obj;
5358 }
5360 # Rewrite a single preprocessed assembly file.
5361 sub lang_cppasm_rewrite
5362 {
5363 return &lang_sub_obj;
5364 }
5366 # Rewrite a single Fortran 77 file.
5367 sub lang_f77_rewrite
5368 {
5369 return &lang_sub_obj;
5370 }
5372 # Rewrite a single Fortran file.
5373 sub lang_fc_rewrite
5374 {
5375 return &lang_sub_obj;
5376 }
5378 # Rewrite a single preprocessed Fortran file.
5379 sub lang_ppfc_rewrite
5380 {
5381 return &lang_sub_obj;
5382 }
5384 # Rewrite a single preprocessed Fortran 77 file.
5385 sub lang_ppf77_rewrite
5386 {
5387 return &lang_sub_obj;
5388 }
5390 # Rewrite a single ratfor file.
5391 sub lang_ratfor_rewrite
5392 {
5393 return &lang_sub_obj;
5394 }
5396 # Rewrite a single Objective C file.
5397 sub lang_objc_rewrite
5398 {
5399 return &lang_sub_obj;
5400 }
5402 # Rewrite a single Unified Parallel C file.
5403 sub lang_upc_rewrite
5404 {
5405 return &lang_sub_obj;
5406 }
5408 # Rewrite a single Java file.
5409 sub lang_java_rewrite
5410 {
5411 return LANG_SUBDIR;
5412 }
5414 # The lang_X_finish functions are called after all source file
5415 # processing is done. Each should handle defining rules for the
5416 # language, etc. A finish function is only called if a source file of
5417 # the appropriate type has been seen.
5419 sub lang_c_finish
5420 {
5421 # Push all libobjs files onto de_ansi_files. We actually only
5422 # push files which exist in the current directory, and which are
5423 # genuine source files.
5424 foreach my $file (keys %libsources)
5425 {
5426 if ($file =~ /^(.*)\.[cly]$/ && -f "$relative_dir/$file")
5427 {
5428 $de_ansi_files{$1} = ''
5429 }
5430 }
5432 if (option 'ansi2knr' && keys %de_ansi_files)
5433 {
5434 # Make all _.c files depend on their corresponding .c files.
5435 my @objects;
5436 foreach my $base (sort keys %de_ansi_files)
5437 {
5438 # Each _.c file must depend on ansi2knr; otherwise it
5439 # might be used in a parallel build before it is built.
5440 # We need to support files in the srcdir and in the build
5441 # dir (because these files might be auto-generated. But
5442 # we can't use $< -- some makes only define $< during a
5443 # suffix rule.
5444 my $ansfile = $de_ansi_files{$base} . $base . '.c';
5445 $output_rules .= ($base . "_.c: $ansfile \$(ANSI2KNR)\n\t"
5446 . '$(CPP) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS) $(CPPFLAGS) '
5447 . '`if test -f $(srcdir)/' . $ansfile
5448 . '; then echo $(srcdir)/' . $ansfile
5449 . '; else echo ' . $ansfile . '; fi` '
5450 . "| sed 's/^# \\([0-9]\\)/#line \\1/' "
5451 . '| $(ANSI2KNR) > $@'
5452 # If ansi2knr fails then we shouldn't
5453 # create the _.c file
5454 . " || rm -f \$\@\n");
5455 push (@objects, $base . '_.$(OBJEXT)');
5456 push (@objects, $base . '_.lo')
5457 if var ('LIBTOOL');
5459 # Explicitly clean the _.c files if they are in a
5460 # subdirectory. (In the current directory they get erased
5461 # by a `rm -f *_.c' rule.)
5462 $clean_files{$base . '_.c'} = MOSTLY_CLEAN
5463 if dirname ($base) ne '.';
5464 }
5466 # Make all _.o (and _.lo) files depend on ansi2knr.
5467 # Use a sneaky little hack to make it print nicely.
5468 &pretty_print_rule ('', '', @objects, ':', '$(ANSI2KNR)');
5469 }
5470 }
5472 # This is a yacc helper which is called whenever we have decided to
5473 # compile a yacc file.
5474 sub lang_yacc_target_hook
5475 {
5476 my ($self, $aggregate, $output, $input, %transform) = @_;
5478 my $flag = $aggregate . "_YFLAGS";
5479 my $flagvar = var $flag;
5480 my $YFLAGSvar = var 'YFLAGS';
5481 if (($flagvar && $flagvar->variable_value =~ /$DASH_D_PATTERN/o)
5482 || ($YFLAGSvar && $YFLAGSvar->variable_value =~ /$DASH_D_PATTERN/o))
5483 {
5484 (my $output_base = $output) =~ s/$KNOWN_EXTENSIONS_PATTERN$//;
5485 my $header = $output_base . '.h';
5487 # Found a `-d' that applies to the compilation of this file.
5488 # Add a dependency for the generated header file, and arrange
5489 # for that file to be included in the distribution.
5490 foreach my $cond (Automake::Rule::define (${header}, 'internal',
5491 RULE_AUTOMAKE, TRUE,
5492 INTERNAL))
5493 {
5494 my $condstr = $cond->subst_string;
5495 $output_rules .=
5496 "$condstr${header}: $output\n"
5497 # Recover from removal of $header
5498 . "$condstr\t\@if test ! -f \$@; then \\\n"
5499 . "$condstr\t rm -f $output; \\\n"
5500 . "$condstr\t \$(MAKE) \$(AM_MAKEFLAGS) $output; \\\n"
5501 . "$condstr\telse :; fi\n";
5502 }
5503 # Distribute the generated file, unless its .y source was
5504 # listed in a nodist_ variable. (&handle_source_transform
5505 # will set DIST_SOURCE.)
5506 &push_dist_common ($header)
5507 if $transform{'DIST_SOURCE'};
5509 # If the files are built in the build directory, then we want
5510 # to remove them with `make clean'. If they are in srcdir
5511 # they shouldn't be touched. However, we can't determine this
5512 # statically, and the GNU rules say that yacc/lex output files
5513 # should be removed by maintainer-clean. So that's what we
5514 # do.
5515 $clean_files{$header} = MAINTAINER_CLEAN;
5516 }
5517 # Erase $OUTPUT on `make maintainer-clean' (by GNU standards).
5518 # See the comment above for $HEADER.
5519 $clean_files{$output} = MAINTAINER_CLEAN;
5520 }
5522 # This is a lex helper which is called whenever we have decided to
5523 # compile a lex file.
5524 sub lang_lex_target_hook
5525 {
5526 my ($self, $aggregate, $output, $input) = @_;
5527 # If the files are built in the build directory, then we want to
5528 # remove them with `make clean'. If they are in srcdir they
5529 # shouldn't be touched. However, we can't determine this
5530 # statically, and the GNU rules say that yacc/lex output files
5531 # should be removed by maintainer-clean. So that's what we do.
5532 $clean_files{$output} = MAINTAINER_CLEAN;
5533 }
5535 # This is a helper for both lex and yacc.
5536 sub yacc_lex_finish_helper
5537 {
5538 return if defined $language_scratch{'lex-yacc-done'};
5539 $language_scratch{'lex-yacc-done'} = 1;
5541 # FIXME: for now, no line number.
5542 require_conf_file ($configure_ac, FOREIGN, 'ylwrap');
5543 &define_variable ('YLWRAP', "$am_config_aux_dir/ylwrap", INTERNAL);
5544 }
5546 sub lang_yacc_finish
5547 {
5548 return if defined $language_scratch{'yacc-done'};
5549 $language_scratch{'yacc-done'} = 1;
5551 reject_var 'YACCFLAGS', "`YACCFLAGS' obsolete; use `YFLAGS' instead";
5553 yacc_lex_finish_helper;
5554 }
5557 sub lang_lex_finish
5558 {
5559 return if defined $language_scratch{'lex-done'};
5560 $language_scratch{'lex-done'} = 1;
5562 yacc_lex_finish_helper;
5563 }
5566 # Given a hash table of linker names, pick the name that has the most
5567 # precedence. This is lame, but something has to have global
5568 # knowledge in order to eliminate the conflict. Add more linkers as
5569 # required.
5570 sub resolve_linker
5571 {
5572 my (%linkers) = @_;
5574 foreach my $l (qw(GCJLINK CXXLINK F77LINK FCLINK OBJCLINK UPCLINK))
5575 {
5576 return $l if defined $linkers{$l};
5577 }
5578 return 'LINK';
5579 }
5581 # Called to indicate that an extension was used.
5582 sub saw_extension
5583 {
5584 my ($ext) = @_;
5585 if (! defined $extension_seen{$ext})
5586 {
5587 $extension_seen{$ext} = 1;
5588 }
5589 else
5590 {
5591 ++$extension_seen{$ext};
5592 }
5593 }
5595 # Return the number of files seen for a given language. Knows about
5596 # special cases we care about. FIXME: this is hideous. We need
5597 # something that involves real language objects. For instance yacc
5598 # and yaccxx could both derive from a common yacc class which would
5599 # know about the strange ylwrap requirement. (Or better yet we could
5600 # just not support legacy yacc!)
5601 sub count_files_for_language
5602 {
5603 my ($name) = @_;
5605 my @names;
5606 if ($name eq 'yacc' || $name eq 'yaccxx')
5607 {
5608 @names = ('yacc', 'yaccxx');
5609 }
5610 elsif ($name eq 'lex' || $name eq 'lexxx')
5611 {
5612 @names = ('lex', 'lexxx');
5613 }
5614 else
5615 {
5616 @names = ($name);
5617 }
5619 my $r = 0;
5620 foreach $name (@names)
5621 {
5622 my $lang = $languages{$name};
5623 foreach my $ext (@{$lang->extensions})
5624 {
5625 $r += $extension_seen{$ext}
5626 if defined $extension_seen{$ext};
5627 }
5628 }
5630 return $r
5631 }
5633 # Called to ask whether source files have been seen . If HEADERS is 1,
5634 # headers can be included.
5635 sub saw_sources_p
5636 {
5637 my ($headers) = @_;
5639 # count all the sources
5640 my $count = 0;
5641 foreach my $val (values %extension_seen)
5642 {
5643 $count += $val;
5644 }
5646 if (!$headers)
5647 {
5648 $count -= count_files_for_language ('header');
5649 }
5651 return $count > 0;
5652 }
5655 # register_language (%ATTRIBUTE)
5656 # ------------------------------
5657 # Register a single language.
5658 # Each %ATTRIBUTE is of the form ATTRIBUTE => VALUE.
5659 sub register_language (%)
5660 {
5661 my (%option) = @_;
5663 # Set the defaults.
5664 $option{'ansi'} = 0
5665 unless defined $option{'ansi'};
5666 $option{'autodep'} = 'no'
5667 unless defined $option{'autodep'};
5668 $option{'linker'} = ''
5669 unless defined $option{'linker'};
5670 $option{'flags'} = []
5671 unless defined $option{'flags'};
5672 $option{'output_extensions'} = sub { return ( '.$(OBJEXT)', '.lo' ) }
5673 unless defined $option{'output_extensions'};
5674 $option{'nodist_specific'} = 0
5675 unless defined $option{'nodist_specific'};
5677 my $lang = new Language (%option);
5679 # Fill indexes.
5680 $extension_map{$_} = $lang->name foreach @{$lang->extensions};
5681 $languages{$lang->name} = $lang;
5682 my $link = $lang->linker;
5683 if ($link)
5684 {
5685 if (exists $link_languages{$link})
5686 {
5687 prog_error ("`$link' has different definitions in "
5688 . $lang->name . " and " . $link_languages{$link}->name)
5689 if $lang->link ne $link_languages{$link}->link;
5690 }
5691 else
5692 {
5693 $link_languages{$link} = $lang;
5694 }
5695 }
5697 # Update the pattern of known extensions.
5698 accept_extensions (@{$lang->extensions});
5700 # Upate the $suffix_rule map.
5701 foreach my $suffix (@{$lang->extensions})
5702 {
5703 foreach my $dest (&{$lang->output_extensions} ($suffix))
5704 {
5705 register_suffix_rule (INTERNAL, $suffix, $dest);
5706 }
5707 }
5708 }
5710 # derive_suffix ($EXT, $OBJ)
5711 # --------------------------
5712 # This function is used to find a path from a user-specified suffix $EXT
5713 # to $OBJ or to some other suffix we recognize internally, e.g. `cc'.
5714 sub derive_suffix ($$)
5715 {
5716 my ($source_ext, $obj) = @_;
5718 while (! $extension_map{$source_ext}
5719 && $source_ext ne $obj
5720 && exists $suffix_rules->{$source_ext}
5721 && exists $suffix_rules->{$source_ext}{$obj})
5722 {
5723 $source_ext = $suffix_rules->{$source_ext}{$obj}[0];
5724 }
5726 return $source_ext;
5727 }
5730 ################################################################
5732 # Pretty-print something and append to output_rules.
5733 sub pretty_print_rule
5734 {
5735 $output_rules .= &makefile_wrap (@_);
5736 }
5739 ################################################################
5742 ## -------------------------------- ##
5743 ## Handling the conditional stack. ##
5744 ## -------------------------------- ##
5747 # $STRING
5748 # make_conditional_string ($NEGATE, $COND)
5749 # ----------------------------------------
5750 sub make_conditional_string ($$)
5751 {
5752 my ($negate, $cond) = @_;
5753 $cond = "${cond}_TRUE"
5754 unless $cond =~ /^TRUE|FALSE$/;
5755 $cond = Automake::Condition::conditional_negate ($cond)
5756 if $negate;
5757 return $cond;
5758 }
5761 my %_am_macro_for_cond =
5762 (
5763 AMDEP => "one of the compiler tests\n"
5764 . " AC_PROG_CC, AC_PROG_CXX, AC_PROG_CXX, AC_PROG_OBJC,\n"
5765 . " AM_PROG_AS, AM_PROG_GCJ, AM_PROG_UPC",
5766 am__fastdepCC => 'AC_PROG_CC',
5767 am__fastdepCCAS => 'AM_PROG_AS',
5768 am__fastdepCXX => 'AC_PROG_CXX',
5769 am__fastdepGCJ => 'AM_PROG_GCJ',
5770 am__fastdepOBJC => 'AC_PROG_OBJC',
5771 am__fastdepUPC => 'AM_PROG_UPC'
5772 );
5774 # $COND
5775 # cond_stack_if ($NEGATE, $COND, $WHERE)
5776 # --------------------------------------
5777 sub cond_stack_if ($$$)
5778 {
5779 my ($negate, $cond, $where) = @_;
5781 if (! $configure_cond{$cond} && $cond !~ /^TRUE|FALSE$/)
5782 {
5783 my $text = "$cond does not appear in AM_CONDITIONAL";
5784 my $scope = US_LOCAL;
5785 if (exists $_am_macro_for_cond{$cond})
5786 {
5787 my $mac = $_am_macro_for_cond{$cond};
5788 $text .= "\n The usual way to define `$cond' is to add ";
5789 $text .= ($mac =~ / /) ? $mac : "`$mac'";
5790 $text .= "\n to `$configure_ac' and run `aclocal' and `autoconf' again.";
5791 # These warnings appear in Automake files (depend2.am),
5792 # so there is no need to display them more than once:
5793 $scope = US_GLOBAL;
5794 }
5795 error $where, $text, uniq_scope => $scope;
5796 }
5798 push (@cond_stack, make_conditional_string ($negate, $cond));
5800 return new Automake::Condition (@cond_stack);
5801 }
5804 # $COND
5805 # cond_stack_else ($NEGATE, $COND, $WHERE)
5806 # ----------------------------------------
5807 sub cond_stack_else ($$$)
5808 {
5809 my ($negate, $cond, $where) = @_;
5811 if (! @cond_stack)
5812 {
5813 error $where, "else without if";
5814 return FALSE;
5815 }
5817 $cond_stack[$#cond_stack] =
5818 Automake::Condition::conditional_negate ($cond_stack[$#cond_stack]);
5820 # If $COND is given, check against it.
5821 if (defined $cond)
5822 {
5823 $cond = make_conditional_string ($negate, $cond);
5825 error ($where, "else reminder ($negate$cond) incompatible with "
5826 . "current conditional: $cond_stack[$#cond_stack]")
5827 if $cond_stack[$#cond_stack] ne $cond;
5828 }
5830 return new Automake::Condition (@cond_stack);
5831 }
5834 # $COND
5835 # cond_stack_endif ($NEGATE, $COND, $WHERE)
5836 # -----------------------------------------
5837 sub cond_stack_endif ($$$)
5838 {
5839 my ($negate, $cond, $where) = @_;
5840 my $old_cond;
5842 if (! @cond_stack)
5843 {
5844 error $where, "endif without if";
5845 return TRUE;
5846 }
5848 # If $COND is given, check against it.
5849 if (defined $cond)
5850 {
5851 $cond = make_conditional_string ($negate, $cond);
5853 error ($where, "endif reminder ($negate$cond) incompatible with "
5854 . "current conditional: $cond_stack[$#cond_stack]")
5855 if $cond_stack[$#cond_stack] ne $cond;
5856 }
5858 pop @cond_stack;
5860 return new Automake::Condition (@cond_stack);
5861 }
5867 ## ------------------------ ##
5868 ## Handling the variables. ##
5869 ## ------------------------ ##
5872 # &define_pretty_variable ($VAR, $COND, $WHERE, @VALUE)
5873 # -----------------------------------------------------
5874 # Like define_variable, but the value is a list, and the variable may
5875 # be defined conditionally. The second argument is the Condition
5876 # under which the value should be defined; this should be the empty
5877 # string to define the variable unconditionally. The third argument
5878 # is a list holding the values to use for the variable. The value is
5879 # pretty printed in the output file.
5880 sub define_pretty_variable ($$$@)
5881 {
5882 my ($var, $cond, $where, @value) = @_;
5884 if (! vardef ($var, $cond))
5885 {
5886 Automake::Variable::define ($var, VAR_AUTOMAKE, '', $cond, "@value",
5887 '', $where, VAR_PRETTY);
5888 rvar ($var)->rdef ($cond)->set_seen;
5889 }
5890 }
5893 # define_variable ($VAR, $VALUE, $WHERE)
5894 # --------------------------------------
5895 # Define a new Automake Makefile variable VAR to VALUE, but only if
5896 # not already defined.
5897 sub define_variable ($$$)
5898 {
5899 my ($var, $value, $where) = @_;
5900 define_pretty_variable ($var, TRUE, $where, $value);
5901 }
5904 # define_files_variable ($VAR, \@BASENAME, $EXTENSION, $WHERE)
5905 # -----------------------------------------------------------
5906 # Define the $VAR which content is the list of file names composed of
5907 # a @BASENAME and the $EXTENSION.
5908 sub define_files_variable ($\@$$)
5909 {
5910 my ($var, $basename, $extension, $where) = @_;
5911 define_variable ($var,
5912 join (' ', map { "$_.$extension" } @$basename),
5913 $where);
5914 }
5917 # Like define_variable, but define a variable to be the configure
5918 # substitution by the same name.
5919 sub define_configure_variable ($)
5920 {
5921 my ($var) = @_;
5923 my $pretty = VAR_ASIS;
5924 my $owner = VAR_CONFIGURE;
5926 # Some variables we do not want to output. For instance it
5927 # would be a bad idea to output `U = @U@` when `@U@` can be
5928 # substituted as `\`.
5929 $pretty = VAR_SILENT if exists $ignored_configure_vars{$var};
5931 # ANSI2KNR is a variable that Automake wants to redefine, so
5932 # it must be owned by Automake. (It is also used as a proof
5933 # that AM_C_PROTOTYPES has been run, that's why we do not simply
5934 # omit the AC_SUBST.)
5935 $owner = VAR_AUTOMAKE if $var eq 'ANSI2KNR';
5937 Automake::Variable::define ($var, $owner, '', TRUE, subst $var,
5938 '', $configure_vars{$var}, $pretty);
5939 }
5942 # define_compiler_variable ($LANG)
5943 # --------------------------------
5944 # Define a compiler variable. We also handle defining the `LT'
5945 # version of the command when using libtool.
5946 sub define_compiler_variable ($)
5947 {
5948 my ($lang) = @_;
5950 my ($var, $value) = ($lang->compiler, $lang->compile);
5951 my $libtool_tag = '';
5952 $libtool_tag = '--tag=' . $lang->libtool_tag . ' '
5953 if $lang->libtool_tag && exists $libtool_tags{$lang->libtool_tag};
5954 &define_variable ($var, $value, INTERNAL);
5955 &define_variable ("LT$var",
5956 "\$(LIBTOOL) $libtool_tag\$(AM_LIBTOOLFLAGS) "
5957 . "\$(LIBTOOLFLAGS) --mode=compile $value",
5958 INTERNAL)
5959 if var ('LIBTOOL');
5960 }
5963 # define_linker_variable ($LANG)
5964 # ------------------------------
5965 # Define linker variables.
5966 sub define_linker_variable ($)
5967 {
5968 my ($lang) = @_;
5970 my $libtool_tag = '';
5971 $libtool_tag = '--tag=' . $lang->libtool_tag . ' '
5972 if $lang->libtool_tag && exists $libtool_tags{$lang->libtool_tag};
5973 # CCLD = $(CC).
5974 &define_variable ($lang->lder, $lang->ld, INTERNAL);
5975 # CCLINK = $(CCLD) blah blah...
5976 &define_variable ($lang->linker,
5977 ((var ('LIBTOOL') ?
5978 "\$(LIBTOOL) $libtool_tag\$(AM_LIBTOOLFLAGS) "
5979 . "\$(LIBTOOLFLAGS) --mode=link " : '')
5980 . $lang->link),
5981 INTERNAL);
5982 }
5984 sub define_per_target_linker_variable ($$)
5985 {
5986 my ($linker, $target) = @_;
5988 # If the user wrote a custom link command, we don't define ours.
5989 return "${target}_LINK"
5990 if set_seen "${target}_LINK";
5992 my $xlink = $linker ? $linker : 'LINK';
5994 my $lang = $link_languages{$xlink};
5995 prog_error "Unknown language for linker variable `$xlink'"
5996 unless $lang;
5998 my $link_command = $lang->link;
5999 if (var 'LIBTOOL')
6000 {
6001 my $libtool_tag = '';
6002 $libtool_tag = '--tag=' . $lang->libtool_tag . ' '
6003 if $lang->libtool_tag && exists $libtool_tags{$lang->libtool_tag};
6005 $link_command =
6006 "\$(LIBTOOL) $libtool_tag\$(AM_LIBTOOLFLAGS) \$(LIBTOOLFLAGS) "
6007 . "--mode=link " . $link_command;
6008 }
6010 # Rewrite each occurrence of `AM_$flag' in the link
6011 # command into `${derived}_$flag' if it exists.
6012 my $orig_command = $link_command;
6013 my @flags = (@{$lang->flags}, 'LDFLAGS');
6014 push @flags, 'LIBTOOLFLAGS' if var 'LIBTOOL';
6015 for my $flag (@flags)
6016 {
6017 my $val = "${target}_$flag";
6018 $link_command =~ s/\(AM_$flag\)/\($val\)/
6019 if set_seen ($val);
6020 }
6022 # If the computed command is the same as the generic command, use
6023 # the command linker variable.
6024 return $lang->linker
6025 if $link_command eq $orig_command;
6027 &define_variable ("${target}_LINK", $link_command, INTERNAL);
6028 return "${target}_LINK";
6029 }
6031 ################################################################
6033 # &check_trailing_slash ($WHERE, $LINE)
6034 # --------------------------------------
6035 # Return 1 iff $LINE ends with a slash.
6036 # Might modify $LINE.
6037 sub check_trailing_slash ($\$)
6038 {
6039 my ($where, $line) = @_;
6041 # Ignore `##' lines.
6042 return 0 if $$line =~ /$IGNORE_PATTERN/o;
6044 # Catch and fix a common error.
6045 msg "syntax", $where, "whitespace following trailing backslash"
6046 if $$line =~ s/\\\s+\n$/\\\n/;
6048 return $$line =~ /\\$/;
6049 }
6052 # &read_am_file ($AMFILE, $WHERE)
6053 # -------------------------------
6054 # Read Makefile.am and set up %contents. Simultaneously copy lines
6055 # from Makefile.am into $output_trailer, or define variables as
6056 # appropriate. NOTE we put rules in the trailer section. We want
6057 # user rules to come after our generated stuff.
6058 sub read_am_file ($$)
6059 {
6060 my ($amfile, $where) = @_;
6062 my $am_file = new Automake::XFile ("< $amfile");
6063 verb "reading $amfile";
6065 # Keep track of the youngest output dependency.
6066 my $mtime = mtime $amfile;
6067 $output_deps_greatest_timestamp = $mtime
6068 if $mtime > $output_deps_greatest_timestamp;
6070 my $spacing = '';
6071 my $comment = '';
6072 my $blank = 0;
6073 my $saw_bk = 0;
6074 my $var_look = VAR_ASIS;
6076 use constant IN_VAR_DEF => 0;
6077 use constant IN_RULE_DEF => 1;
6078 use constant IN_COMMENT => 2;
6079 my $prev_state = IN_RULE_DEF;
6081 while ($_ = $am_file->getline)
6082 {
6083 $where->set ("$amfile:$.");
6084 if (/$IGNORE_PATTERN/o)
6085 {
6086 # Merely delete comments beginning with two hashes.
6087 }
6088 elsif (/$WHITE_PATTERN/o)
6089 {
6090 error $where, "blank line following trailing backslash"
6091 if $saw_bk;
6092 # Stick a single white line before the incoming macro or rule.
6093 $spacing = "\n";
6094 $blank = 1;
6095 # Flush all comments seen so far.
6096 if ($comment ne '')
6097 {
6098 $output_vars .= $comment;
6099 $comment = '';
6100 }
6101 }
6102 elsif (/$COMMENT_PATTERN/o)
6103 {
6104 # Stick comments before the incoming macro or rule. Make
6105 # sure a blank line precedes the first block of comments.
6106 $spacing = "\n" unless $blank;
6107 $blank = 1;
6108 $comment .= $spacing . $_;
6109 $spacing = '';
6110 $prev_state = IN_COMMENT;
6111 }
6112 else
6113 {
6114 last;
6115 }
6116 $saw_bk = check_trailing_slash ($where, $_);
6117 }
6119 # We save the conditional stack on entry, and then check to make
6120 # sure it is the same on exit. This lets us conditionally include
6121 # other files.
6122 my @saved_cond_stack = @cond_stack;
6123 my $cond = new Automake::Condition (@cond_stack);
6125 my $last_var_name = '';
6126 my $last_var_type = '';
6127 my $last_var_value = '';
6128 my $last_where;
6129 # FIXME: shouldn't use $_ in this loop; it is too big.
6130 while ($_)
6131 {
6132 $where->set ("$amfile:$.");
6134 # Make sure the line is \n-terminated.
6135 chomp;
6136 $_ .= "\n";
6138 # Don't look at MAINTAINER_MODE_TRUE here. That shouldn't be
6139 # used by users. @MAINT@ is an anachronism now.
6140 $_ =~ s/\@MAINT\@//g
6141 unless $seen_maint_mode;
6143 my $new_saw_bk = check_trailing_slash ($where, $_);
6145 if (/$IGNORE_PATTERN/o)
6146 {
6147 # Merely delete comments beginning with two hashes.
6149 # Keep any backslash from the previous line.
6150 $new_saw_bk = $saw_bk;
6151 }
6152 elsif (/$WHITE_PATTERN/o)
6153 {
6154 # Stick a single white line before the incoming macro or rule.
6155 $spacing = "\n";
6156 error $where, "blank line following trailing backslash"
6157 if $saw_bk;
6158 }
6159 elsif (/$COMMENT_PATTERN/o)
6160 {
6161 error $where, "comment following trailing backslash"
6162 if $saw_bk && $comment eq '';
6164 # Stick comments before the incoming macro or rule.
6165 $comment .= $spacing . $_;
6166 $spacing = '';
6167 $prev_state = IN_COMMENT;
6168 }
6169 elsif ($saw_bk)
6170 {
6171 if ($prev_state == IN_RULE_DEF)
6172 {
6173 my $cond = new Automake::Condition @cond_stack;
6174 $output_trailer .= $cond->subst_string;
6175 $output_trailer .= $_;
6176 }
6177 elsif ($prev_state == IN_COMMENT)
6178 {
6179 # If the line doesn't start with a `#', add it.
6180 # We do this because a continued comment like
6181 # # A = foo \
6182 # bar \
6183 # baz
6184 # is not portable. BSD make doesn't honor
6185 # escaped newlines in comments.
6186 s/^#?/#/;
6187 $comment .= $spacing . $_;
6188 }
6189 else # $prev_state == IN_VAR_DEF
6190 {
6191 $last_var_value .= ' '
6192 unless $last_var_value =~ /\s$/;
6193 $last_var_value .= $_;
6195 if (!/\\$/)
6196 {
6197 Automake::Variable::define ($last_var_name, VAR_MAKEFILE,
6198 $last_var_type, $cond,
6199 $last_var_value, $comment,
6200 $last_where, VAR_ASIS)
6201 if $cond != FALSE;
6202 $comment = $spacing = '';
6203 }
6204 }
6205 }
6207 elsif (/$IF_PATTERN/o)
6208 {
6209 $cond = cond_stack_if ($1, $2, $where);
6210 }
6211 elsif (/$ELSE_PATTERN/o)
6212 {
6213 $cond = cond_stack_else ($1, $2, $where);
6214 }
6215 elsif (/$ENDIF_PATTERN/o)
6216 {
6217 $cond = cond_stack_endif ($1, $2, $where);
6218 }
6220 elsif (/$RULE_PATTERN/o)
6221 {
6222 # Found a rule.
6223 $prev_state = IN_RULE_DEF;
6225 # For now we have to output all definitions of user rules
6226 # and can't diagnose duplicates (see the comment in
6227 # Automake::Rule::define). So we go on and ignore the return value.
6228 Automake::Rule::define ($1, $amfile, RULE_USER, $cond, $where);
6230 check_variable_expansions ($_, $where);
6232 $output_trailer .= $comment . $spacing;
6233 my $cond = new Automake::Condition @cond_stack;
6234 $output_trailer .= $cond->subst_string;
6235 $output_trailer .= $_;
6236 $comment = $spacing = '';
6237 }
6238 elsif (/$ASSIGNMENT_PATTERN/o)
6239 {
6240 # Found a macro definition.
6241 $prev_state = IN_VAR_DEF;
6242 $last_var_name = $1;
6243 $last_var_type = $2;
6244 $last_var_value = $3;
6245 $last_where = $where->clone;
6246 if ($3 ne '' && substr ($3, -1) eq "\\")
6247 {
6248 # We preserve the `\' because otherwise the long lines
6249 # that are generated will be truncated by broken
6250 # `sed's.
6251 $last_var_value = $3 . "\n";
6252 }
6253 # Normally we try to output variable definitions in the
6254 # same format they were input. However, POSIX compliant
6255 # systems are not required to support lines longer than
6256 # 2048 bytes (most notably, some sed implementation are
6257 # limited to 4000 bytes, and sed is used by config.status
6258 # to rewrite Makefile.in into Makefile). Moreover nobody
6259 # would really write such long lines by hand since it is
6260 # hardly maintainable. So if a line is longer that 1000
6261 # bytes (an arbitrary limit), assume it has been
6262 # automatically generated by some tools, and flatten the
6263 # variable definition. Otherwise, keep the variable as it
6264 # as been input.
6265 $var_look = VAR_PRETTY if length ($last_var_value) >= 1000;
6267 if (!/\\$/)
6268 {
6269 Automake::Variable::define ($last_var_name, VAR_MAKEFILE,
6270 $last_var_type, $cond,
6271 $last_var_value, $comment,
6272 $last_where, $var_look)
6273 if $cond != FALSE;
6274 $comment = $spacing = '';
6275 $var_look = VAR_ASIS;
6276 }
6277 }
6278 elsif (/$INCLUDE_PATTERN/o)
6279 {
6280 my $path = $1;
6282 if ($path =~ s/^\$\(top_srcdir\)\///)
6283 {
6284 push (@include_stack, "\$\(top_srcdir\)/$path");
6285 # Distribute any included file.
6287 # Always use the $(top_srcdir) prefix in DIST_COMMON,
6288 # otherwise OSF make will implicitly copy the included
6289 # file in the build tree during `make distdir' to satisfy
6290 # the dependency.
6291 # (subdircond2.test and subdircond3.test will fail.)
6292 push_dist_common ("\$\(top_srcdir\)/$path");
6293 }
6294 else
6295 {
6296 $path =~ s/\$\(srcdir\)\///;
6297 push (@include_stack, "\$\(srcdir\)/$path");
6298 # Always use the $(srcdir) prefix in DIST_COMMON,
6299 # otherwise OSF make will implicitly copy the included
6300 # file in the build tree during `make distdir' to satisfy
6301 # the dependency.
6302 # (subdircond2.test and subdircond3.test will fail.)
6303 push_dist_common ("\$\(srcdir\)/$path");
6304 $path = $relative_dir . "/" . $path if $relative_dir ne '.';
6305 }
6306 $where->push_context ("`$path' included from here");
6307 &read_am_file ($path, $where);
6308 $where->pop_context;
6309 }
6310 else
6311 {
6312 # This isn't an error; it is probably a continued rule.
6313 # In fact, this is what we assume.
6314 $prev_state = IN_RULE_DEF;
6315 check_variable_expansions ($_, $where);
6316 $output_trailer .= $comment . $spacing;
6317 my $cond = new Automake::Condition @cond_stack;
6318 $output_trailer .= $cond->subst_string;
6319 $output_trailer .= $_;
6320 $comment = $spacing = '';
6321 error $where, "`#' comment at start of rule is unportable"
6322 if $_ =~ /^\t\s*\#/;
6323 }
6325 $saw_bk = $new_saw_bk;
6326 $_ = $am_file->getline;
6327 }
6329 $output_trailer .= $comment;
6331 error ($where, "trailing backslash on last line")
6332 if $saw_bk;
6334 error ($where, (@cond_stack ? "unterminated conditionals: @cond_stack"
6335 : "too many conditionals closed in include file"))
6336 if "@saved_cond_stack" ne "@cond_stack";
6337 }
6340 # define_standard_variables ()
6341 # ----------------------------
6342 # A helper for read_main_am_file which initializes configure variables
6343 # and variables from header-vars.am.
6344 sub define_standard_variables
6345 {
6346 my $saved_output_vars = $output_vars;
6347 my ($comments, undef, $rules) =
6348 file_contents_internal (1, "$libdir/am/header-vars.am",
6349 new Automake::Location);
6351 foreach my $var (sort keys %configure_vars)
6352 {
6353 &define_configure_variable ($var);
6354 }
6356 $output_vars .= $comments . $rules;
6357 }
6359 # Read main am file.
6360 sub read_main_am_file
6361 {
6362 my ($amfile) = @_;
6364 # This supports the strange variable tricks we are about to play.
6365 prog_error (macros_dump () . "variable defined before read_main_am_file")
6366 if (scalar (variables) > 0);
6368 # Generate copyright header for generated Makefile.in.
6369 # We do discard the output of predefined variables, handled below.
6370 $output_vars = ("# $in_file_name generated by automake "
6371 . $VERSION . " from $am_file_name.\n");
6372 $output_vars .= '# ' . subst ('configure_input') . "\n";
6373 $output_vars .= $gen_copyright;
6375 # We want to predefine as many variables as possible. This lets
6376 # the user set them with `+=' in Makefile.am.
6377 &define_standard_variables;
6379 # Read user file, which might override some of our values.
6380 &read_am_file ($amfile, new Automake::Location);
6381 }
6385 ################################################################
6387 # $FLATTENED
6388 # &flatten ($STRING)
6389 # ------------------
6390 # Flatten the $STRING and return the result.
6391 sub flatten
6392 {
6393 $_ = shift;
6395 s/\\\n//somg;
6396 s/\s+/ /g;
6397 s/^ //;
6398 s/ $//;
6400 return $_;
6401 }
6403 # transform($TOKEN, \%PAIRS)
6404 # ==========================
6405 # If ($TOKEN, $VAL) is in %PAIRS:
6406 # - replaces %$TOKEN% with $VAL,
6407 # - enables/disables ?$TOKEN? and ?!$TOKEN?,
6408 # - replaces %?$TOKEN% with TRUE or FALSE.
6409 sub transform($$)
6410 {
6411 my ($token, $transform) = @_;
6413 if (substr ($token, 0, 1) eq '%')
6414 {
6415 my $cond = (substr ($token, 1, 1) eq '?') ? 1 : 0;
6416 $token = substr ($token, 1 + $cond, -1);
6417 my $val = $transform->{$token};
6418 prog_error "Unknown %token% `$token'" unless defined $val;
6419 if ($cond)
6420 {
6421 return $val ? 'TRUE' : 'FALSE';
6422 }
6423 else
6424 {
6425 return $val;
6426 }
6427 }
6428 # Now $token is '?xxx?' or '?!xxx?'.
6429 my $neg = (substr ($token, 1, 1) eq '!') ? 1 : 0;
6430 $token = substr ($token, 1 + $neg, -1);
6431 my $val = $transform->{$token};
6432 prog_error "Unknown ?token? `$token' (neg = $neg)" unless defined $val;
6433 return (!!$val == $neg) ? '##%' : '';
6434 }
6436 # @PARAGRAPHS
6437 # &make_paragraphs ($MAKEFILE, [%TRANSFORM])
6438 # ------------------------------------------
6439 # Load a $MAKEFILE, apply the %TRANSFORM, and return it as a list of
6440 # paragraphs.
6441 sub make_paragraphs ($%)
6442 {
6443 my ($file, %transform) = @_;
6445 # Complete %transform with global options.
6446 # Note that %transform goes last, so it overrides global options.
6447 %transform = ('CYGNUS' => !! option 'cygnus',
6448 'MAINTAINER-MODE'
6449 => $seen_maint_mode ? subst ('MAINTAINER_MODE_TRUE') : '',
6451 'LZMA' => !! option 'dist-lzma',
6452 'BZIP2' => !! option 'dist-bzip2',
6453 'COMPRESS' => !! option 'dist-tarZ',
6454 'GZIP' => ! option 'no-dist-gzip',
6455 'SHAR' => !! option 'dist-shar',
6456 'ZIP' => !! option 'dist-zip',
6458 'INSTALL-INFO' => ! option 'no-installinfo',
6459 'INSTALL-MAN' => ! option 'no-installman',
6460 'CK-NEWS' => !! option 'check-news',
6462 'SUBDIRS' => !! var ('SUBDIRS'),
6463 'TOPDIR_P' => $relative_dir eq '.',
6465 'BUILD' => ($seen_canonical >= AC_CANONICAL_BUILD),
6466 'HOST' => ($seen_canonical >= AC_CANONICAL_HOST),
6467 'TARGET' => ($seen_canonical >= AC_CANONICAL_TARGET),
6469 'LIBTOOL' => !! var ('LIBTOOL'),
6470 'NONLIBTOOL' => 1,
6471 'FIRST' => ! $transformed_files{$file},
6472 %transform);
6474 $transformed_files{$file} = 1;
6475 $_ = $am_file_cache{$file};
6477 if (! defined $_)
6478 {
6479 verb "reading $file";
6480 # Swallow the whole file.
6481 my $fc_file = new Automake::XFile "< $file";
6482 my $saved_dollar_slash = $/;
6483 undef $/;
6484 $_ = $fc_file->getline;
6485 $/ = $saved_dollar_slash;
6486 $fc_file->close;
6488 # Remove ##-comments.
6489 # Besides we don't need more than two consecutive new-lines.
6490 s/(?:$IGNORE_PATTERN|(?<=\n\n)\n+)//gom;
6492 $am_file_cache{$file} = $_;
6493 }
6495 # Substitute Automake template tokens.
6496 s/(?:%\??[\w\-]+%|\?!?[\w\-]+\?)/transform($&, \%transform)/ge;
6497 # transform() may have added some ##%-comments to strip.
6498 # (we use `##%' instead of `##' so we can distinguish ##%##%##% from
6499 # ####### and do not remove the latter.)
6500 s/^[ \t]*(?:##%)+.*\n//gm;
6502 # Split at unescaped new lines.
6503 my @lines = split (/(?<!\\)\n/, $_);
6504 my @res;
6506 while (defined ($_ = shift @lines))
6507 {
6508 my $paragraph = $_;
6509 # If we are a rule, eat as long as we start with a tab.
6510 if (/$RULE_PATTERN/smo)
6511 {
6512 while (defined ($_ = shift @lines) && $_ =~ /^\t/)
6513 {
6514 $paragraph .= "\n$_";
6515 }
6516 unshift (@lines, $_);
6517 }
6519 # If we are a comments, eat as much comments as you can.
6520 elsif (/$COMMENT_PATTERN/smo)
6521 {
6522 while (defined ($_ = shift @lines)
6523 && $_ =~ /$COMMENT_PATTERN/smo)
6524 {
6525 $paragraph .= "\n$_";
6526 }
6527 unshift (@lines, $_);
6528 }
6530 push @res, $paragraph;
6531 }
6533 return @res;
6534 }
6538 # ($COMMENT, $VARIABLES, $RULES)
6539 # &file_contents_internal ($IS_AM, $FILE, $WHERE, [%TRANSFORM])
6540 # -------------------------------------------------------------
6541 # Return contents of a file from $libdir/am, automatically skipping
6542 # macros or rules which are already known. $IS_AM iff the caller is
6543 # reading an Automake file (as opposed to the user's Makefile.am).
6544 sub file_contents_internal ($$$%)
6545 {
6546 my ($is_am, $file, $where, %transform) = @_;
6548 $where->set ($file);
6550 my $result_vars = '';
6551 my $result_rules = '';
6552 my $comment = '';
6553 my $spacing = '';
6555 # The following flags are used to track rules spanning across
6556 # multiple paragraphs.
6557 my $is_rule = 0; # 1 if we are processing a rule.
6558 my $discard_rule = 0; # 1 if the current rule should not be output.
6560 # We save the conditional stack on entry, and then check to make
6561 # sure it is the same on exit. This lets us conditionally include
6562 # other files.
6563 my @saved_cond_stack = @cond_stack;
6564 my $cond = new Automake::Condition (@cond_stack);
6566 foreach (make_paragraphs ($file, %transform))
6567 {
6568 # FIXME: no line number available.
6569 $where->set ($file);
6571 # Sanity checks.
6572 error $where, "blank line following trailing backslash:\n$_"
6573 if /\\$/;
6574 error $where, "comment following trailing backslash:\n$_"
6575 if /\\#/;
6577 if (/^$/)
6578 {
6579 $is_rule = 0;
6580 # Stick empty line before the incoming macro or rule.
6581 $spacing = "\n";
6582 }
6583 elsif (/$COMMENT_PATTERN/mso)
6584 {
6585 $is_rule = 0;
6586 # Stick comments before the incoming macro or rule.
6587 $comment = "$_\n";
6588 }
6590 # Handle inclusion of other files.
6591 elsif (/$INCLUDE_PATTERN/o)
6592 {
6593 if ($cond != FALSE)
6594 {
6595 my $file = ($is_am ? "$libdir/am/" : '') . $1;
6596 $where->push_context ("`$file' included from here");
6597 # N-ary `.=' fails.
6598 my ($com, $vars, $rules)
6599 = file_contents_internal ($is_am, $file, $where, %transform);
6600 $where->pop_context;
6601 $comment .= $com;
6602 $result_vars .= $vars;
6603 $result_rules .= $rules;
6604 }
6605 }
6607 # Handling the conditionals.
6608 elsif (/$IF_PATTERN/o)
6609 {
6610 $cond = cond_stack_if ($1, $2, $file);
6611 }
6612 elsif (/$ELSE_PATTERN/o)
6613 {
6614 $cond = cond_stack_else ($1, $2, $file);
6615 }
6616 elsif (/$ENDIF_PATTERN/o)
6617 {
6618 $cond = cond_stack_endif ($1, $2, $file);
6619 }
6621 # Handling rules.
6622 elsif (/$RULE_PATTERN/mso)
6623 {
6624 $is_rule = 1;
6625 $discard_rule = 0;
6626 # Separate relationship from optional actions: the first
6627 # `new-line tab" not preceded by backslash (continuation
6628 # line).
6629 my $paragraph = $_;
6630 /^(.*?)(?:(?<!\\)\n(\t.*))?$/s;
6631 my ($relationship, $actions) = ($1, $2 || '');
6633 # Separate targets from dependencies: the first colon.
6634 $relationship =~ /^([^:]+\S+) *: *(.*)$/som;
6635 my ($targets, $dependencies) = ($1, $2);
6636 # Remove the escaped new lines.
6637 # I don't know why, but I have to use a tmp $flat_deps.
6638 my $flat_deps = &flatten ($dependencies);
6639 my @deps = split (' ', $flat_deps);
6641 foreach (split (' ' , $targets))
6642 {
6643 # FIXME: 1. We are not robust to people defining several targets
6644 # at once, only some of them being in %dependencies. The
6645 # actions from the targets in %dependencies are usually generated
6646 # from the content of %actions, but if some targets in $targets
6647 # are not in %dependencies the ELSE branch will output
6648 # a rule for all $targets (i.e. the targets which are both
6649 # in %dependencies and $targets will have two rules).
6651 # FIXME: 2. The logic here is not able to output a
6652 # multi-paragraph rule several time (e.g. for each condition
6653 # it is defined for) because it only knows the first paragraph.
6655 # FIXME: 3. We are not robust to people defining a subset
6656 # of a previously defined "multiple-target" rule. E.g.
6657 # `foo:' after `foo bar:'.
6659 # Output only if not in FALSE.
6660 if (defined $dependencies{$_} && $cond != FALSE)
6661 {
6662 &depend ($_, @deps);
6663 if ($actions{$_})
6664 {
6665 $actions{$_} .= "\n$actions" if $actions;
6666 }
6667 else
6668 {
6669 $actions{$_} = $actions;
6670 }
6671 }
6672 else
6673 {
6674 # Free-lance dependency. Output the rule for all the
6675 # targets instead of one by one.
6676 my @undefined_conds =
6677 Automake::Rule::define ($targets, $file,
6678 $is_am ? RULE_AUTOMAKE : RULE_USER,
6679 $cond, $where);
6680 for my $undefined_cond (@undefined_conds)
6681 {
6682 my $condparagraph = $paragraph;
6683 $condparagraph =~ s/^/$undefined_cond->subst_string/gme;
6684 $result_rules .= "$spacing$comment$condparagraph\n";
6685 }
6686 if (scalar @undefined_conds == 0)
6687 {
6688 # Remember to discard next paragraphs
6689 # if they belong to this rule.
6690 # (but see also FIXME: #2 above.)
6691 $discard_rule = 1;
6692 }
6693 $comment = $spacing = '';
6694 last;
6695 }
6696 }
6697 }
6699 elsif (/$ASSIGNMENT_PATTERN/mso)
6700 {
6701 my ($var, $type, $val) = ($1, $2, $3);
6702 error $where, "variable `$var' with trailing backslash"
6703 if /\\$/;
6705 $is_rule = 0;
6707 Automake::Variable::define ($var,
6708 $is_am ? VAR_AUTOMAKE : VAR_MAKEFILE,
6709 $type, $cond, $val, $comment, $where,
6710 VAR_ASIS)
6711 if $cond != FALSE;
6713 $comment = $spacing = '';
6714 }
6715 else
6716 {
6717 # This isn't an error; it is probably some tokens which
6718 # configure is supposed to replace, such as `@SET-MAKE@',
6719 # or some part of a rule cut by an if/endif.
6720 if (! $cond->false && ! ($is_rule && $discard_rule))
6721 {
6722 s/^/$cond->subst_string/gme;
6723 $result_rules .= "$spacing$comment$_\n";
6724 }
6725 $comment = $spacing = '';
6726 }
6727 }
6729 error ($where, @cond_stack ?
6730 "unterminated conditionals: @cond_stack" :
6731 "too many conditionals closed in include file")
6732 if "@saved_cond_stack" ne "@cond_stack";
6734 return ($comment, $result_vars, $result_rules);
6735 }
6738 # $CONTENTS
6739 # &file_contents ($BASENAME, $WHERE, [%TRANSFORM])
6740 # ------------------------------------------------
6741 # Return contents of a file from $libdir/am, automatically skipping
6742 # macros or rules which are already known.
6743 sub file_contents ($$%)
6744 {
6745 my ($basename, $where, %transform) = @_;
6746 my ($comments, $variables, $rules) =
6747 file_contents_internal (1, "$libdir/am/$basename.am", $where,
6748 %transform);
6749 return "$comments$variables$rules";
6750 }
6753 # @PREFIX
6754 # &am_primary_prefixes ($PRIMARY, $CAN_DIST, @PREFIXES)
6755 # -----------------------------------------------------
6756 # Find all variable prefixes that are used for install directories. A
6757 # prefix `zar' qualifies iff:
6758 #
6759 # * `zardir' is a variable.
6760 # * `zar_PRIMARY' is a variable.
6761 #
6762 # As a side effect, it looks for misspellings. It is an error to have
6763 # a variable ending in a "reserved" suffix whose prefix is unknown, e.g.
6764 # "bni_PROGRAMS". However, unusual prefixes are allowed if a variable
6765 # of the same name (with "dir" appended) exists. For instance, if the
6766 # variable "zardir" is defined, then "zar_PROGRAMS" becomes valid.
6767 # This is to provide a little extra flexibility in those cases which
6768 # need it.
6769 sub am_primary_prefixes ($$@)
6770 {
6771 my ($primary, $can_dist, @prefixes) = @_;
6773 local $_;
6774 my %valid = map { $_ => 0 } @prefixes;
6775 $valid{'EXTRA'} = 0;
6776 foreach my $var (variables $primary)
6777 {
6778 # Automake is allowed to define variables that look like primaries
6779 # but which aren't. E.g. INSTALL_sh_DATA.
6780 # Autoconf can also define variables like INSTALL_DATA, so
6781 # ignore all configure variables (at least those which are not
6782 # redefined in Makefile.am).
6783 # FIXME: We should make sure that these variables are not
6784 # conditionally defined (or else adjust the condition below).
6785 my $def = $var->def (TRUE);
6786 next if $def && $def->owner != VAR_MAKEFILE;
6788 my $varname = $var->name;
6790 if ($varname =~ /^(nobase_)?(dist_|nodist_)?(.*)_[[:alnum:]]+$/)
6791 {
6792 my ($base, $dist, $X) = ($1 || '', $2 || '', $3 || '');
6793 if ($dist ne '' && ! $can_dist)
6794 {
6795 err_var ($var,
6796 "invalid variable `$varname': `dist' is forbidden");
6797 }
6798 # Standard directories must be explicitly allowed.
6799 elsif (! defined $valid{$X} && exists $standard_prefix{$X})
6800 {
6801 err_var ($var,
6802 "`${X}dir' is not a legitimate directory " .
6803 "for `$primary'");
6804 }
6805 # A not explicitly valid directory is allowed if Xdir is defined.
6806 elsif (! defined $valid{$X} &&
6807 $var->requires_variables ("`$varname' is used", "${X}dir"))
6808 {
6809 # Nothing to do. Any error message has been output
6810 # by $var->requires_variables.
6811 }
6812 else
6813 {
6814 # Ensure all extended prefixes are actually used.
6815 $valid{"$base$dist$X"} = 1;
6816 }
6817 }
6818 else
6819 {
6820 prog_error "unexpected variable name: $varname";
6821 }
6822 }
6824 # Return only those which are actually defined.
6825 return sort grep { var ($_ . '_' . $primary) } keys %valid;
6826 }
6829 # Handle `where_HOW' variable magic. Does all lookups, generates
6830 # install code, and possibly generates code to define the primary
6831 # variable. The first argument is the name of the .am file to munge,
6832 # the second argument is the primary variable (e.g. HEADERS), and all
6833 # subsequent arguments are possible installation locations.
6834 #
6835 # Returns list of [$location, $value] pairs, where
6836 # $value's are the values in all where_HOW variable, and $location
6837 # there associated location (the place here their parent variables were
6838 # defined).
6839 #
6840 # FIXME: this should be rewritten to be cleaner. It should be broken
6841 # up into multiple functions.
6842 #
6843 # Usage is: am_install_var (OPTION..., file, HOW, where...)
6844 sub am_install_var
6845 {
6846 my (@args) = @_;
6848 my $do_require = 1;
6849 my $can_dist = 0;
6850 my $default_dist = 0;
6851 while (@args)
6852 {
6853 if ($args[0] eq '-noextra')
6854 {
6855 $do_require = 0;
6856 }
6857 elsif ($args[0] eq '-candist')
6858 {
6859 $can_dist = 1;
6860 }
6861 elsif ($args[0] eq '-defaultdist')
6862 {
6863 $default_dist = 1;
6864 $can_dist = 1;
6865 }
6866 elsif ($args[0] !~ /^-/)
6867 {
6868 last;
6869 }
6870 shift (@args);
6871 }
6873 my ($file, $primary, @prefix) = @args;
6875 # Now that configure substitutions are allowed in where_HOW
6876 # variables, it is an error to actually define the primary. We
6877 # allow `JAVA', as it is customarily used to mean the Java
6878 # interpreter. This is but one of several Java hacks. Similarly,
6879 # `PYTHON' is customarily used to mean the Python interpreter.
6880 reject_var $primary, "`$primary' is an anachronism"
6881 unless $primary eq 'JAVA' || $primary eq 'PYTHON';
6883 # Get the prefixes which are valid and actually used.
6884 @prefix = am_primary_prefixes ($primary, $can_dist, @prefix);
6886 # If a primary includes a configure substitution, then the EXTRA_
6887 # form is required. Otherwise we can't properly do our job.
6888 my $require_extra;
6890 my @used = ();
6891 my @result = ();
6893 foreach my $X (@prefix)
6894 {
6895 my $nodir_name = $X;
6896 my $one_name = $X . '_' . $primary;
6897 my $one_var = var $one_name;
6899 my $strip_subdir = 1;
6900 # If subdir prefix should be preserved, do so.
6901 if ($nodir_name =~ /^nobase_/)
6902 {
6903 $strip_subdir = 0;
6904 $nodir_name =~ s/^nobase_//;
6905 }
6907 # If files should be distributed, do so.
6908 my $dist_p = 0;
6909 if ($can_dist)
6910 {
6911 $dist_p = (($default_dist && $nodir_name !~ /^nodist_/)
6912 || (! $default_dist && $nodir_name =~ /^dist_/));
6913 $nodir_name =~ s/^(dist|nodist)_//;
6914 }
6917 # Use the location of the currently processed variable.
6918 # We are not processing a particular condition, so pick the first
6919 # available.
6920 my $tmpcond = $one_var->conditions->one_cond;
6921 my $where = $one_var->rdef ($tmpcond)->location->clone;
6923 # Append actual contents of where_PRIMARY variable to
6924 # @result, skipping @substitutions@.
6925 foreach my $locvals ($one_var->value_as_list_recursive (location => 1))
6926 {
6927 my ($loc, $value) = @$locvals;
6928 # Skip configure substitutions.
6929 if ($value =~ /^\@.*\@$/)
6930 {
6931 if ($nodir_name eq 'EXTRA')
6932 {
6933 error ($where,
6934 "`$one_name' contains configure substitution, "
6935 . "but shouldn't");
6936 }
6937 # Check here to make sure variables defined in
6938 # configure.ac do not imply that EXTRA_PRIMARY
6939 # must be defined.
6940 elsif (! defined $configure_vars{$one_name})
6941 {
6942 $require_extra = $one_name
6943 if $do_require;
6944 }
6945 }
6946 else
6947 {
6948 push (@result, $locvals);
6949 }
6950 }
6951 # A blatant hack: we rewrite each _PROGRAMS primary to include
6952 # EXEEXT.
6953 append_exeext { 1 } $one_name
6954 if $primary eq 'PROGRAMS';
6955 # "EXTRA" shouldn't be used when generating clean targets,
6956 # all, or install targets. We used to warn if EXTRA_FOO was
6957 # defined uselessly, but this was annoying.
6958 next
6959 if $nodir_name eq 'EXTRA';
6961 if ($nodir_name eq 'check')
6962 {
6963 push (@check, '$(' . $one_name . ')');
6964 }
6965 else
6966 {
6967 push (@used, '$(' . $one_name . ')');
6968 }
6970 # Is this to be installed?
6971 my $install_p = $nodir_name ne 'noinst' && $nodir_name ne 'check';
6973 # If so, with install-exec? (or install-data?).
6974 my $exec_p = ($nodir_name =~ /$EXEC_DIR_PATTERN/o);
6976 my $check_options_p = $install_p && !! option 'std-options';
6978 # Use the location of the currently processed variable as context.
6979 $where->push_context ("while processing `$one_name'");
6981 # The variable containing all file to distribute.
6982 my $distvar = "\$($one_name)";
6983 $distvar = shadow_unconditionally ($one_name, $where)
6984 if ($dist_p && $one_var->has_conditional_contents);
6986 # Singular form of $PRIMARY.
6987 (my $one_primary = $primary) =~ s/S$//;
6988 $output_rules .= &file_contents ($file, $where,
6989 PRIMARY => $primary,
6990 ONE_PRIMARY => $one_primary,
6991 DIR => $X,
6992 NDIR => $nodir_name,
6993 BASE => $strip_subdir,
6995 EXEC => $exec_p,
6996 INSTALL => $install_p,
6997 DIST => $dist_p,
6998 DISTVAR => $distvar,
6999 'CK-OPTS' => $check_options_p);
7000 }
7002 # The JAVA variable is used as the name of the Java interpreter.
7003 # The PYTHON variable is used as the name of the Python interpreter.
7004 if (@used && $primary ne 'JAVA' && $primary ne 'PYTHON')
7005 {
7006 # Define it.
7007 define_pretty_variable ($primary, TRUE, INTERNAL, @used);
7008 $output_vars .= "\n";
7009 }
7011 err_var ($require_extra,
7012 "`$require_extra' contains configure substitution,\n"
7013 . "but `EXTRA_$primary' not defined")
7014 if ($require_extra && ! var ('EXTRA_' . $primary));
7016 # Push here because PRIMARY might be configure time determined.
7017 push (@all, '$(' . $primary . ')')
7018 if @used && $primary ne 'JAVA' && $primary ne 'PYTHON';
7020 # Make the result unique. This lets the user use conditionals in
7021 # a natural way, but still lets us program lazily -- we don't have
7022 # to worry about handling a particular object more than once.
7023 # We will keep only one location per object.
7024 my %result = ();
7025 for my $pair (@result)
7026 {
7027 my ($loc, $val) = @$pair;
7028 $result{$val} = $loc;
7029 }
7030 my @l = sort keys %result;
7031 return map { [$result{$_}->clone, $_] } @l;
7032 }
7035 ################################################################
7037 # Each key in this hash is the name of a directory holding a
7038 # Makefile.in. These variables are local to `is_make_dir'.
7039 my %make_dirs = ();
7040 my $make_dirs_set = 0;
7042 sub is_make_dir
7043 {
7044 my ($dir) = @_;
7045 if (! $make_dirs_set)
7046 {
7047 foreach my $iter (@configure_input_files)
7048 {
7049 $make_dirs{dirname ($iter)} = 1;
7050 }
7051 # We also want to notice Makefile.in's.
7052 foreach my $iter (@other_input_files)
7053 {
7054 if ($iter =~ /Makefile\.in$/)
7055 {
7056 $make_dirs{dirname ($iter)} = 1;
7057 }
7058 }
7059 $make_dirs_set = 1;
7060 }
7061 return defined $make_dirs{$dir};
7062 }
7064 ################################################################
7066 # Find the aux dir. This should match the algorithm used by
7067 # ./configure. (See the Autoconf documentation for for
7068 # AC_CONFIG_AUX_DIR.)
7069 sub locate_aux_dir ()
7070 {
7071 if (! $config_aux_dir_set_in_configure_ac)
7072 {
7073 # The default auxiliary directory is the first
7074 # of ., .., or ../.. that contains install-sh.
7075 # Assume . if install-sh doesn't exist yet.
7076 for my $dir (qw (. .. ../..))
7077 {
7078 if (-f "$dir/install-sh")
7079 {
7080 $config_aux_dir = $dir;
7081 last;
7082 }
7083 }
7084 $config_aux_dir = '.' unless $config_aux_dir;
7085 }
7086 # Avoid unsightly '/.'s.
7087 $am_config_aux_dir =
7088 '$(top_srcdir)' . ($config_aux_dir eq '.' ? "" : "/$config_aux_dir");
7089 $am_config_aux_dir =~ s,/*$,,;
7090 }
7093 # &maybe_push_required_file ($DIR, $FILE, $FULLFILE)
7094 # --------------------------------------------------
7095 # See if we want to push this file onto dist_common. This function
7096 # encodes the rules for deciding when to do so.
7097 sub maybe_push_required_file
7098 {
7099 my ($dir, $file, $fullfile) = @_;
7101 if ($dir eq $relative_dir)
7102 {
7103 push_dist_common ($file);
7104 return 1;
7105 }
7106 elsif ($relative_dir eq '.' && ! &is_make_dir ($dir))
7107 {
7108 # If we are doing the topmost directory, and the file is in a
7109 # subdir which does not have a Makefile, then we distribute it
7110 # here.
7112 # If a required file is above the source tree, it is important
7113 # to prefix it with `$(srcdir)' so that no VPATH search is
7114 # performed. Otherwise problems occur with Make implementations
7115 # that rewrite and simplify rules whose dependencies are found in a
7116 # VPATH location. Here is an example with OSF1/Tru64 Make.
7117 #
7118 # % cat Makefile
7119 # VPATH = sub
7120 # distdir: ../a
7121 # echo ../a
7122 # % ls
7123 # Makefile a
7124 # % make
7125 # echo a
7126 # a
7127 #
7128 # Dependency `../a' was found in `sub/../a', but this make
7129 # implementation simplified it as `a'. (Note that the sub/
7130 # directory does not even exist.)
7131 #
7132 # This kind of VPATH rewriting seems hard to cancel. The
7133 # distdir.am hack against VPATH rewriting works only when no
7134 # simplification is done, i.e., for dependencies which are in
7135 # subdirectories, not in enclosing directories. Hence, in
7136 # the latter case we use a full path to make sure no VPATH
7137 # search occurs.
7138 $fullfile = '$(srcdir)/' . $fullfile
7139 if $dir =~ m,^\.\.(?:$|/),;
7141 push_dist_common ($fullfile);
7142 return 1;
7143 }
7144 return 0;
7145 }
7148 # If a file name appears as a key in this hash, then it has already
7149 # been checked for. This allows us not to report the same error more
7150 # than once.
7151 my %required_file_not_found = ();
7153 # &require_file_internal ($WHERE, $MYSTRICT, $DIRECTORY, @FILES)
7154 # --------------------------------------------------------------
7155 # Verify that the file must exist in $DIRECTORY, or install it.
7156 # $MYSTRICT is the strictness level at which this file becomes required.
7157 sub require_file_internal ($$$@)
7158 {
7159 my ($where, $mystrict, $dir, @files) = @_;
7161 foreach my $file (@files)
7162 {
7163 my $fullfile = "$dir/$file";
7164 my $found_it = 0;
7165 my $dangling_sym = 0;
7167 if (-l $fullfile && ! -f $fullfile)
7168 {
7169 $dangling_sym = 1;
7170 }
7171 elsif (dir_has_case_matching_file ($dir, $file))
7172 {
7173 $found_it = 1;
7174 maybe_push_required_file ($dir, $file, $fullfile);
7175 }
7177 # `--force-missing' only has an effect if `--add-missing' is
7178 # specified.
7179 if ($found_it && (! $add_missing || ! $force_missing))
7180 {
7181 next;
7182 }
7183 else
7184 {
7185 # If we've already looked for it, we're done. You might
7186 # wonder why we don't do this before searching for the
7187 # file. If we do that, then something like
7188 # AC_OUTPUT(subdir/foo foo) will fail to put foo.in into
7189 # DIST_COMMON.
7190 if (! $found_it)
7191 {
7192 next if defined $required_file_not_found{$fullfile};
7193 $required_file_not_found{$fullfile} = 1;
7194 }
7196 if ($strictness >= $mystrict)
7197 {
7198 if ($dangling_sym && $add_missing)
7199 {
7200 unlink ($fullfile);
7201 }
7203 my $trailer = '';
7204 my $suppress = 0;
7206 # Only install missing files according to our desired
7207 # strictness level.
7208 my $message = "required file `$fullfile' not found";
7209 if ($add_missing)
7210 {
7211 if (-f "$libdir/$file")
7212 {
7213 $suppress = 1;
7215 # Install the missing file. Symlink if we
7216 # can, copy if we must. Note: delete the file
7217 # first, in case it is a dangling symlink.
7218 $message = "installing `$fullfile'";
7219 # Windows Perl will hang if we try to delete a
7220 # file that doesn't exist.
7221 unlink ($fullfile) if -f $fullfile;
7222 if ($symlink_exists && ! $copy_missing)
7223 {
7224 if (! symlink ("$libdir/$file", $fullfile))
7225 {
7226 $suppress = 0;
7227 $trailer = "; error while making link: $!";
7228 }
7229 }
7230 elsif (system ('cp', "$libdir/$file", $fullfile))
7231 {
7232 $suppress = 0;
7233 $trailer = "\n error while copying";
7234 }
7235 reset_dir_cache ($dir);
7236 }
7238 if (! maybe_push_required_file (dirname ($fullfile),
7239 $file, $fullfile))
7240 {
7241 if (! $found_it && ! $automake_will_process_aux_dir)
7242 {
7243 # We have added the file but could not push it
7244 # into DIST_COMMON, probably because this is
7245 # an auxiliary file and we are not processing
7246 # the top level Makefile. Furthermore Automake
7247 # hasn't been asked to create the Makefile.in
7248 # that distribute the aux dir files.
7249 error ($where, 'Please make a full run of automake'
7250 . " so $fullfile gets distributed.");
7251 }
7252 }
7253 }
7254 else
7255 {
7256 $trailer = "\n `automake --add-missing' can install `$file'"
7257 if -f "$libdir/$file";
7258 }
7260 # If --force-missing was specified, and we have
7261 # actually found the file, then do nothing.
7262 next
7263 if $found_it && $force_missing;
7265 # If we couldn't install the file, but it is a target in
7266 # the Makefile, don't print anything. This allows files
7267 # like README, AUTHORS, or THANKS to be generated.
7268 next
7269 if !$suppress && rule $file;
7271 msg ($suppress ? 'note' : 'error', $where, "$message$trailer");
7272 }
7273 }
7274 }
7275 }
7277 # &require_file ($WHERE, $MYSTRICT, @FILES)
7278 # -----------------------------------------
7279 sub require_file ($$@)
7280 {
7281 my ($where, $mystrict, @files) = @_;
7282 require_file_internal ($where, $mystrict, $relative_dir, @files);
7283 }
7285 # &require_file_with_macro ($COND, $MACRO, $MYSTRICT, @FILES)
7286 # -----------------------------------------------------------
7287 sub require_file_with_macro ($$$@)
7288 {
7289 my ($cond, $macro, $mystrict, @files) = @_;
7290 $macro = rvar ($macro) unless ref $macro;
7291 require_file ($macro->rdef ($cond)->location, $mystrict, @files);
7292 }
7294 # &require_libsource_with_macro ($COND, $MACRO, $MYSTRICT, @FILES)
7295 # ----------------------------------------------------------------
7296 # Require an AC_LIBSOURCEd file. If AC_CONFIG_LIBOBJ_DIR was called, it
7297 # must be in that directory. Otherwise expect it in the current directory.
7298 sub require_libsource_with_macro ($$$@)
7299 {
7300 my ($cond, $macro, $mystrict, @files) = @_;
7301 $macro = rvar ($macro) unless ref $macro;
7302 if ($config_libobj_dir)
7303 {
7304 require_file_internal ($macro->rdef ($cond)->location, $mystrict,
7305 $config_libobj_dir, @files);
7306 }
7307 else
7308 {
7309 require_file ($macro->rdef ($cond)->location, $mystrict, @files);
7310 }
7311 }
7313 # &require_conf_file ($WHERE, $MYSTRICT, @FILES)
7314 # ----------------------------------------------
7315 # Looks in configuration path, as specified by AC_CONFIG_AUX_DIR.
7316 sub require_conf_file ($$@)
7317 {
7318 my ($where, $mystrict, @files) = @_;
7319 require_file_internal ($where, $mystrict, $config_aux_dir, @files);
7320 }
7323 # &require_conf_file_with_macro ($COND, $MACRO, $MYSTRICT, @FILES)
7324 # ----------------------------------------------------------------
7325 sub require_conf_file_with_macro ($$$@)
7326 {
7327 my ($cond, $macro, $mystrict, @files) = @_;
7328 require_conf_file (rvar ($macro)->rdef ($cond)->location,
7329 $mystrict, @files);
7330 }
7332 ################################################################
7334 # &require_build_directory ($DIRECTORY)
7335 # ------------------------------------
7336 # Emit rules to create $DIRECTORY if needed, and return
7337 # the file that any target requiring this directory should be made
7338 # dependent upon.
7339 # We don't want to emit the rule twice, and want to reuse it
7340 # for directories with equivalent names (e.g., `foo/bar' and `./foo//bar').
7341 sub require_build_directory ($)
7342 {
7343 my $directory = shift;
7345 return $directory_map{$directory} if exists $directory_map{$directory};
7347 my $cdir = File::Spec->canonpath ($directory);
7349 if (exists $directory_map{$cdir})
7350 {
7351 my $stamp = $directory_map{$cdir};
7352 $directory_map{$directory} = $stamp;
7353 return $stamp;
7354 }
7356 my $dirstamp = "$cdir/\$(am__dirstamp)";
7358 $directory_map{$directory} = $dirstamp;
7359 $directory_map{$cdir} = $dirstamp;
7361 # Set a variable for the dirstamp basename.
7362 define_pretty_variable ('am__dirstamp', TRUE, INTERNAL,
7363 '$(am__leading_dot)dirstamp');
7365 # Directory must be removed by `make distclean'.
7366 $clean_files{$dirstamp} = DIST_CLEAN;
7368 $output_rules .= ("$dirstamp:\n"
7369 . "\t\@\$(MKDIR_P) $directory\n"
7370 . "\t\@: > $dirstamp\n");
7372 return $dirstamp;
7373 }
7375 # &require_build_directory_maybe ($FILE)
7376 # --------------------------------------
7377 # If $FILE lies in a subdirectory, emit a rule to create this
7378 # directory and return the file that $FILE should be made
7379 # dependent upon. Otherwise, just return the empty string.
7380 sub require_build_directory_maybe ($)
7381 {
7382 my $file = shift;
7383 my $directory = dirname ($file);
7385 if ($directory ne '.')
7386 {
7387 return require_build_directory ($directory);
7388 }
7389 else
7390 {
7391 return '';
7392 }
7393 }
7395 ################################################################
7397 # Push a list of files onto dist_common.
7398 sub push_dist_common
7399 {
7400 prog_error "push_dist_common run after handle_dist"
7401 if $handle_dist_run;
7402 Automake::Variable::define ('DIST_COMMON', VAR_AUTOMAKE, '+', TRUE, "@_",
7403 '', INTERNAL, VAR_PRETTY);
7404 }
7407 ################################################################
7409 # generate_makefile ($MAKEFILE_AM, $MAKEFILE_IN)
7410 # ----------------------------------------------
7411 # Generate a Makefile.in given the name of the corresponding Makefile and
7412 # the name of the file output by config.status.
7413 sub generate_makefile ($$)
7414 {
7415 my ($makefile_am, $makefile_in) = @_;
7417 # Reset all the Makefile.am related variables.
7418 initialize_per_input;
7420 # AUTOMAKE_OPTIONS can contains -W flags to disable or enable
7421 # warnings for this file. So hold any warning issued before
7422 # we have processed AUTOMAKE_OPTIONS.
7423 buffer_messages ('warning');
7425 # Name of input file ("Makefile.am") and output file
7426 # ("Makefile.in"). These have no directory components.
7427 $am_file_name = basename ($makefile_am);
7428 $in_file_name = basename ($makefile_in);
7430 # $OUTPUT is encoded. If it contains a ":" then the first element
7431 # is the real output file, and all remaining elements are input
7432 # files. We don't scan or otherwise deal with these input files,
7433 # other than to mark them as dependencies. See
7434 # &scan_autoconf_files for details.
7435 my ($makefile, @inputs) = split (/:/, $output_files{$makefile_in});
7437 $relative_dir = dirname ($makefile);
7438 $am_relative_dir = dirname ($makefile_am);
7439 $topsrcdir = backname ($relative_dir);
7441 read_main_am_file ($makefile_am);
7442 if (handle_options)
7443 {
7444 # Process buffered warnings.
7445 flush_messages;
7446 # Fatal error. Just return, so we can continue with next file.
7447 return;
7448 }
7449 # Process buffered warnings.
7450 flush_messages;
7452 # There are a few install-related variables that you should not define.
7453 foreach my $var ('PRE_INSTALL', 'POST_INSTALL', 'NORMAL_INSTALL')
7454 {
7455 my $v = var $var;
7456 if ($v)
7457 {
7458 my $def = $v->def (TRUE);
7459 prog_error "$var not defined in condition TRUE"
7460 unless $def;
7461 reject_var $var, "`$var' should not be defined"
7462 if $def->owner != VAR_AUTOMAKE;
7463 }
7464 }
7466 # Catch some obsolete variables.
7467 msg_var ('obsolete', 'INCLUDES',
7468 "`INCLUDES' is the old name for `AM_CPPFLAGS' (or `*_CPPFLAGS')")
7469 if var ('INCLUDES');
7471 # Must do this after reading .am file.
7472 define_variable ('subdir', $relative_dir, INTERNAL);
7474 # If DIST_SUBDIRS is defined, make sure SUBDIRS is, so that
7475 # recursive rules are enabled.
7476 define_pretty_variable ('SUBDIRS', TRUE, INTERNAL, '')
7477 if var 'DIST_SUBDIRS' && ! var 'SUBDIRS';
7479 # Check first, because we might modify some state.
7480 check_cygnus;
7481 check_gnu_standards;
7482 check_gnits_standards;
7484 handle_configure ($makefile_am, $makefile_in, $makefile, @inputs);
7485 handle_gettext;
7486 handle_libraries;
7487 handle_ltlibraries;
7488 handle_programs;
7489 handle_scripts;
7491 # These must be run after all the sources are scanned. They
7492 # use variables defined by &handle_libraries, &handle_ltlibraries,
7493 # or &handle_programs.
7494 handle_compile;
7495 handle_languages;
7496 handle_libtool;
7498 # Variables used by distdir.am and tags.am.
7499 define_pretty_variable ('SOURCES', TRUE, INTERNAL, @sources);
7500 if (! option 'no-dist')
7501 {
7502 define_pretty_variable ('DIST_SOURCES', TRUE, INTERNAL, @dist_sources);
7503 }
7505 handle_multilib;
7506 handle_texinfo;
7507 handle_emacs_lisp;
7508 handle_python;
7509 handle_java;
7510 handle_man_pages;
7511 handle_data;
7512 handle_headers;
7513 handle_subdirs;
7514 handle_tags;
7515 handle_minor_options;
7516 # Must come after handle_programs so that %known_programs is up-to-date.
7517 handle_tests;
7519 # This must come after most other rules.
7520 handle_dist;
7522 handle_footer;
7523 do_check_merge_target;
7524 handle_all ($makefile);
7526 # FIXME: Gross!
7527 if (var ('lib_LTLIBRARIES') && var ('bin_PROGRAMS'))
7528 {
7529 $output_rules .= "install-binPROGRAMS: install-libLTLIBRARIES\n\n";
7530 }
7532 handle_install;
7533 handle_clean ($makefile);
7534 handle_factored_dependencies;
7536 # Comes last, because all the above procedures may have
7537 # defined or overridden variables.
7538 $output_vars .= output_variables;
7540 check_typos;
7542 my ($out_file) = $output_directory . '/' . $makefile_in;
7544 if ($exit_code != 0)
7545 {
7546 verb "not writing $out_file because of earlier errors";
7547 return;
7548 }
7550 if (! -d ($output_directory . '/' . $am_relative_dir))
7551 {
7552 mkdir ($output_directory . '/' . $am_relative_dir, 0755);
7553 }
7555 # We make sure that `all:' is the first target.
7556 my $output =
7557 "$output_vars$output_all$output_header$output_rules$output_trailer";
7559 # Decide whether we must update the output file or not.
7560 # We have to update in the following situations.
7561 # * $force_generation is set.
7562 # * any of the output dependencies is younger than the output
7563 # * the contents of the output is different (this can happen
7564 # if the project has been populated with a file listed in
7565 # @common_files since the last run).
7566 # Output's dependencies are split in two sets:
7567 # * dependencies which are also configure dependencies
7568 # These do not change between each Makefile.am
7569 # * other dependencies, specific to the Makefile.am being processed
7570 # (such as the Makefile.am itself, or any Makefile fragment
7571 # it includes).
7572 my $timestamp = mtime $out_file;
7573 if (! $force_generation
7574 && $configure_deps_greatest_timestamp < $timestamp
7575 && $output_deps_greatest_timestamp < $timestamp
7576 && $output eq contents ($out_file))
7577 {
7578 verb "$out_file unchanged";
7579 # No need to update.
7580 return;
7581 }
7583 if (-e $out_file)
7584 {
7585 unlink ($out_file)
7586 or fatal "cannot remove $out_file: $!\n";
7587 }
7589 my $gm_file = new Automake::XFile "> $out_file";
7590 verb "creating $out_file";
7591 print $gm_file $output;
7592 }
7594 ################################################################
7599 ################################################################
7601 # Print usage information.
7602 sub usage ()
7603 {
7604 print "Usage: $0 [OPTION] ... [Makefile]...
7606 Generate Makefile.in for configure from Makefile.am.
7608 Operation modes:
7609 --help print this help, then exit
7610 --version print version number, then exit
7611 -v, --verbose verbosely list files processed
7612 --no-force only update Makefile.in's that are out of date
7613 -W, --warnings=CATEGORY report the warnings falling in CATEGORY
7615 Dependency tracking:
7616 -i, --ignore-deps disable dependency tracking code
7617 --include-deps enable dependency tracking code
7619 Flavors:
7620 --cygnus assume program is part of Cygnus-style tree
7621 --foreign set strictness to foreign
7622 --gnits set strictness to gnits
7623 --gnu set strictness to gnu
7625 Library files:
7626 -a, --add-missing add missing standard files to package
7627 --libdir=DIR directory storing library files
7628 -c, --copy with -a, copy missing files (default is symlink)
7629 -f, --force-missing force update of standard files
7631 ";
7632 Automake::ChannelDefs::usage;
7634 my ($last, @lcomm);
7635 $last = '';
7636 foreach my $iter (sort ((@common_files, @common_sometimes)))
7637 {
7638 push (@lcomm, $iter) unless $iter eq $last;
7639 $last = $iter;
7640 }
7642 my @four;
7643 print "\nFiles which are automatically distributed, if found:\n";
7644 format USAGE_FORMAT =
7645 @<<<<<<<<<<<<<<<< @<<<<<<<<<<<<<<<< @<<<<<<<<<<<<<<<< @<<<<<<<<<<<<<<<<
7646 $four[0], $four[1], $four[2], $four[3]
7647 .
7648 $~ = "USAGE_FORMAT";
7650 my $cols = 4;
7651 my $rows = int(@lcomm / $cols);
7652 my $rest = @lcomm % $cols;
7654 if ($rest)
7655 {
7656 $rows++;
7657 }
7658 else
7659 {
7660 $rest = $cols;
7661 }
7663 for (my $y = 0; $y < $rows; $y++)
7664 {
7665 @four = ("", "", "", "");
7666 for (my $x = 0; $x < $cols; $x++)
7667 {
7668 last if $y + 1 == $rows && $x == $rest;
7670 my $idx = (($x > $rest)
7671 ? ($rows * $rest + ($rows - 1) * ($x - $rest))
7672 : ($rows * $x));
7674 $idx += $y;
7675 $four[$x] = $lcomm[$idx];
7676 }
7677 write;
7678 }
7680 print "\nReport bugs to <bug-automake\@gnu.org>.\n";
7682 # --help always returns 0 per GNU standards.
7683 exit 0;
7684 }
7687 # &version ()
7688 # -----------
7689 # Print version information
7690 sub version ()
7691 {
7692 print <<EOF;
7693 automake (GNU $PACKAGE) $VERSION
7694 Copyright (C) 2007 Free Software Foundation, Inc.
7695 License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html>
7696 This is free software: you are free to change and redistribute it.
7697 There is NO WARRANTY, to the extent permitted by law.
7699 Written by Tom Tromey <tromey\@redhat.com>
7700 and Alexandre Duret-Lutz <adl\@gnu.org>.
7701 EOF
7702 # --version always returns 0 per GNU standards.
7703 exit 0;
7704 }
7706 ################################################################
7708 # Parse command line.
7709 sub parse_arguments ()
7710 {
7711 # Start off as gnu.
7712 set_strictness ('gnu');
7714 my $cli_where = new Automake::Location;
7715 my %cli_options =
7716 (
7717 'libdir=s' => \$libdir,
7718 'gnu' => sub { set_strictness ('gnu'); },
7719 'gnits' => sub { set_strictness ('gnits'); },
7720 'cygnus' => sub { set_global_option ('cygnus', $cli_where); },
7721 'foreign' => sub { set_strictness ('foreign'); },
7722 'include-deps' => sub { unset_global_option ('no-dependencies'); },
7723 'i|ignore-deps' => sub { set_global_option ('no-dependencies',
7724 $cli_where); },
7725 'no-force' => sub { $force_generation = 0; },
7726 'f|force-missing' => \$force_missing,
7727 'o|output-dir=s' => \$output_directory,
7728 'a|add-missing' => \$add_missing,
7729 'c|copy' => \$copy_missing,
7730 'v|verbose' => sub { setup_channel 'verb', silent => 0; },
7731 'W|warnings=s' => \&parse_warnings,
7732 # These long options (--Werror and --Wno-error) for backward
7733 # compatibility. Use -Werror and -Wno-error today.
7734 'Werror' => sub { parse_warnings 'W', 'error'; },
7735 'Wno-error' => sub { parse_warnings 'W', 'no-error'; },
7736 );
7737 use Getopt::Long;
7738 Getopt::Long::config ("bundling", "pass_through");
7740 # See if --version or --help is used. We want to process these before
7741 # anything else because the GNU Coding Standards require us to
7742 # `exit 0' after processing these options, and we can't guarantee this
7743 # if we treat other options first. (Handling other options first
7744 # could produce error diagnostics, and in this condition it is
7745 # confusing if Automake does `exit 0'.)
7746 my %cli_options_1st_pass =
7747 (
7748 'version' => \&version,
7749 'help' => \&usage,
7750 # Recognize all other options (and their arguments) but do nothing.
7751 map { $_ => sub {} } (keys %cli_options)
7752 );
7753 my @ARGV_backup = @ARGV;
7754 Getopt::Long::GetOptions %cli_options_1st_pass
7755 or exit 1;
7756 @ARGV = @ARGV_backup;
7758 # Now *really* process the options. This time we know that --help
7759 # and --version are not present, but we specify them nonetheless so
7760 # that ambiguous abbreviation are diagnosed.
7761 Getopt::Long::GetOptions %cli_options, 'version' => sub {}, 'help' => sub {}
7762 or exit 1;
7764 if (defined $output_directory)
7765 {
7766 msg 'obsolete', "`--output-dir' is deprecated\n";
7767 }
7768 else
7769 {
7770 # In the next release we'll remove this entirely.
7771 $output_directory = '.';
7772 }
7774 return unless @ARGV;
7776 if ($ARGV[0] =~ /^-./)
7777 {
7778 my %argopts;
7779 for my $k (keys %cli_options)
7780 {
7781 if ($k =~ /(.*)=s$/)
7782 {
7783 map { $argopts{(length ($_) == 1)
7784 ? "-$_" : "--$_" } = 1; } (split (/\|/, $1));
7785 }
7786 }
7787 if ($ARGV[0] eq '--')
7788 {
7789 shift @ARGV;
7790 }
7791 elsif (exists $argopts{$ARGV[0]})
7792 {
7793 fatal ("option `$ARGV[0]' requires an argument\n"
7794 . "Try `$0 --help' for more information.");
7795 }
7796 else
7797 {
7798 fatal ("unrecognized option `$ARGV[0]'.\n"
7799 . "Try `$0 --help' for more information.");
7800 }
7801 }
7803 my $errspec = 0;
7804 foreach my $arg (@ARGV)
7805 {
7806 fatal ("empty argument\nTry `$0 --help' for more information.")
7807 if ($arg eq '');
7809 # Handle $local:$input syntax.
7810 my ($local, @rest) = split (/:/, $arg);
7811 @rest = ("$local.in",) unless @rest;
7812 my $input = locate_am @rest;
7813 if ($input)
7814 {
7815 push @input_files, $input;
7816 $output_files{$input} = join (':', ($local, @rest));
7817 }
7818 else
7819 {
7820 error "no Automake input file found for `$arg'";
7821 $errspec = 1;
7822 }
7823 }
7824 fatal "no input file found among supplied arguments"
7825 if $errspec && ! @input_files;
7826 }
7828 ################################################################
7830 # Parse the WARNINGS environment variable.
7831 parse_WARNINGS;
7833 # Parse command line.
7834 parse_arguments;
7836 $configure_ac = require_configure_ac;
7838 # Do configure.ac scan only once.
7839 scan_autoconf_files;
7841 if (! @input_files)
7842 {
7843 my $msg = '';
7844 $msg = "\nDid you forget AC_CONFIG_FILES([Makefile]) in $configure_ac?"
7845 if -f 'Makefile.am';
7846 fatal ("no `Makefile.am' found for any configure output$msg");
7847 }
7849 # Now do all the work on each file.
7850 foreach my $file (@input_files)
7851 {
7852 ($am_file = $file) =~ s/\.in$//;
7853 if (! -f ($am_file . '.am'))
7854 {
7855 error "`$am_file.am' does not exist";
7856 }
7857 else
7858 {
7859 # Any warning setting now local to this Makefile.am.
7860 dup_channel_setup;
7862 generate_makefile ($am_file . '.am', $file);
7864 # Back out any warning setting.
7865 drop_channel_setup;
7866 }
7867 }
7869 exit $exit_code;
7872 ### Setup "GNU" style for perl-mode and cperl-mode.
7873 ## Local Variables:
7874 ## perl-indent-level: 2
7875 ## perl-continued-statement-offset: 2
7876 ## perl-continued-brace-offset: 0
7877 ## perl-brace-offset: 0
7878 ## perl-brace-imaginary-offset: 0
7879 ## perl-label-offset: -2
7880 ## cperl-indent-level: 2
7881 ## cperl-brace-offset: 0
7882 ## cperl-continued-brace-offset: 0
7883 ## cperl-label-offset: -2
7884 ## cperl-extra-newline-before-brace: t
7885 ## cperl-merge-trailing-else: nil
7886 ## cperl-continued-statement-offset: 2
7887 ## End: