| blob | b5f5f12ceb90320d09e53130fcba98b92254383a |
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 }
2333 my (@mostly_rms, @dist_rms);
2334 foreach my $item (sort keys %compile_clean_files)
2335 {
2336 if ($compile_clean_files{$item} == MOSTLY_CLEAN)
2337 {
2338 push (@mostly_rms, "\t-rm -f $item");
2339 }
2340 elsif ($compile_clean_files{$item} == DIST_CLEAN)
2341 {
2342 push (@dist_rms, "\t-rm -f $item");
2343 }
2344 else
2345 {
2346 prog_error 'invalid entry in %compile_clean_files';
2347 }
2348 }
2350 my ($coms, $vars, $rules) =
2351 &file_contents_internal (1, "$libdir/am/compile.am",
2352 new Automake::Location,
2353 ('DEFAULT_INCLUDES' => $default_includes,
2354 'MOSTLYRMS' => join ("\n", @mostly_rms),
2355 'DISTRMS' => join ("\n", @dist_rms)));
2356 $output_vars .= $vars;
2357 $output_rules .= "$coms$rules";
2359 # Check for automatic de-ANSI-fication.
2360 if (option 'ansi2knr')
2361 {
2362 my ($ansi2knr_filename, $ansi2knr_where) = @{option 'ansi2knr'};
2363 my $ansi2knr_dir = '';
2365 require_variables ($ansi2knr_where, "option `ansi2knr' is used",
2366 TRUE, "ANSI2KNR", "U");
2368 # topdir is where ansi2knr should be.
2369 if ($ansi2knr_filename eq 'ansi2knr')
2370 {
2371 # Only require ansi2knr files if they should appear in
2372 # this directory.
2373 require_file ($ansi2knr_where, FOREIGN,
2374 'ansi2knr.c', 'ansi2knr.1');
2376 # ansi2knr needs to be built before subdirs, so unshift it.
2377 unshift (@all, '$(ANSI2KNR)');
2378 }
2379 else
2380 {
2381 $ansi2knr_dir = dirname ($ansi2knr_filename);
2382 }
2384 $output_rules .= &file_contents ('ansi2knr',
2385 new Automake::Location,
2386 'ANSI2KNR-DIR' => $ansi2knr_dir);
2388 }
2389 }
2391 # handle_libtool ()
2392 # -----------------
2393 # Handle libtool rules.
2394 sub handle_libtool
2395 {
2396 return unless var ('LIBTOOL');
2398 # Libtool requires some files, but only at top level.
2399 # (Starting with Libtool 2.0 we do not have to bother. These
2400 # requirements are done with AC_REQUIRE_AUX_FILE.)
2401 require_conf_file_with_macro (TRUE, 'LIBTOOL', FOREIGN, @libtool_files)
2402 if $relative_dir eq '.' && ! $libtool_new_api;
2404 my @libtool_rms;
2405 foreach my $item (sort keys %libtool_clean_directories)
2406 {
2407 my $dir = ($item eq '.') ? '' : "$item/";
2408 # .libs is for Unix, _libs for DOS.
2409 push (@libtool_rms, "\t-rm -rf ${dir}.libs ${dir}_libs");
2410 }
2412 check_user_variables 'LIBTOOLFLAGS';
2414 # Output the libtool compilation rules.
2415 $output_rules .= &file_contents ('libtool',
2416 new Automake::Location,
2417 LTRMS => join ("\n", @libtool_rms));
2418 }
2420 # handle_programs ()
2421 # ------------------
2422 # Handle C programs.
2423 sub handle_programs
2424 {
2425 my @proglist = &am_install_var ('progs', 'PROGRAMS',
2426 'bin', 'sbin', 'libexec', 'pkglib',
2427 'noinst', 'check');
2428 return if ! @proglist;
2430 my $seen_global_libobjs =
2431 var ('LDADD') && &handle_lib_objects ('', 'LDADD');
2433 foreach my $pair (@proglist)
2434 {
2435 my ($where, $one_file) = @$pair;
2437 my $seen_libobjs = 0;
2438 my $obj = get_object_extension '.$(OBJEXT)';
2440 # Strip any $(EXEEXT) suffix the user might have added, or this
2441 # will confuse &handle_source_transform and &check_canonical_spelling.
2442 # We'll add $(EXEEXT) back later anyway.
2443 $one_file =~ s/\$\(EXEEXT\)$//;
2445 $known_programs{$one_file} = $where;
2447 # Canonicalize names and check for misspellings.
2448 my $xname = &check_canonical_spelling ($one_file, '_LDADD', '_LDFLAGS',
2449 '_SOURCES', '_OBJECTS',
2450 '_DEPENDENCIES');
2452 $where->push_context ("while processing program `$one_file'");
2453 $where->set (INTERNAL->get);
2455 my $linker = &handle_source_transform ($xname, $one_file, $obj, $where,
2456 NONLIBTOOL => 1, LIBTOOL => 0);
2458 if (var ($xname . "_LDADD"))
2459 {
2460 $seen_libobjs = &handle_lib_objects ($xname, $xname . '_LDADD');
2461 }
2462 else
2463 {
2464 # User didn't define prog_LDADD override. So do it.
2465 &define_variable ($xname . '_LDADD', '$(LDADD)', $where);
2467 # This does a bit too much work. But we need it to
2468 # generate _DEPENDENCIES when appropriate.
2469 if (var ('LDADD'))
2470 {
2471 $seen_libobjs = &handle_lib_objects ($xname, 'LDADD');
2472 }
2473 }
2475 reject_var ($xname . '_LIBADD',
2476 "use `${xname}_LDADD', not `${xname}_LIBADD'");
2478 set_seen ($xname . '_DEPENDENCIES');
2479 set_seen ($xname . '_LDFLAGS');
2481 # Determine program to use for link.
2482 my $xlink = &define_per_target_linker_variable ($linker, $xname);
2484 # If the resulting program lies into a subdirectory,
2485 # make sure this directory will exist.
2486 my $dirstamp = require_build_directory_maybe ($one_file);
2488 $libtool_clean_directories{dirname ($one_file)} = 1;
2490 $output_rules .= &file_contents ('program',
2491 $where,
2492 PROGRAM => $one_file,
2493 XPROGRAM => $xname,
2494 XLINK => $xlink,
2495 DIRSTAMP => $dirstamp,
2496 EXEEXT => '$(EXEEXT)');
2498 if ($seen_libobjs || $seen_global_libobjs)
2499 {
2500 if (var ($xname . '_LDADD'))
2501 {
2502 &check_libobjs_sources ($xname, $xname . '_LDADD');
2503 }
2504 elsif (var ('LDADD'))
2505 {
2506 &check_libobjs_sources ($xname, 'LDADD');
2507 }
2508 }
2509 }
2510 }
2513 # handle_libraries ()
2514 # -------------------
2515 # Handle libraries.
2516 sub handle_libraries
2517 {
2518 my @liblist = &am_install_var ('libs', 'LIBRARIES',
2519 'lib', 'pkglib', 'noinst', 'check');
2520 return if ! @liblist;
2522 my @prefix = am_primary_prefixes ('LIBRARIES', 0, 'lib', 'pkglib',
2523 'noinst', 'check');
2525 if (@prefix)
2526 {
2527 my $var = rvar ($prefix[0] . '_LIBRARIES');
2528 $var->requires_variables ('library used', 'RANLIB');
2529 }
2531 &define_variable ('AR', 'ar', INTERNAL);
2532 &define_variable ('ARFLAGS', 'cru', INTERNAL);
2534 foreach my $pair (@liblist)
2535 {
2536 my ($where, $onelib) = @$pair;
2538 my $seen_libobjs = 0;
2539 # Check that the library fits the standard naming convention.
2540 my $bn = basename ($onelib);
2541 if ($bn !~ /^lib.*\.a$/)
2542 {
2543 $bn =~ s/^(?:lib)?(.*?)(?:\.[^.]*)?$/lib$1.a/;
2544 my $suggestion = dirname ($onelib) . "/$bn";
2545 $suggestion =~ s|^\./||g;
2546 msg ('error-gnu/warn', $where,
2547 "`$onelib' is not a standard library name\n"
2548 . "did you mean `$suggestion'?")
2549 }
2551 $where->push_context ("while processing library `$onelib'");
2552 $where->set (INTERNAL->get);
2554 my $obj = get_object_extension '.$(OBJEXT)';
2556 # Canonicalize names and check for misspellings.
2557 my $xlib = &check_canonical_spelling ($onelib, '_LIBADD', '_SOURCES',
2558 '_OBJECTS', '_DEPENDENCIES',
2559 '_AR');
2561 if (! var ($xlib . '_AR'))
2562 {
2563 &define_variable ($xlib . '_AR', '$(AR) $(ARFLAGS)', $where);
2564 }
2566 # Generate support for conditional object inclusion in
2567 # libraries.
2568 if (var ($xlib . '_LIBADD'))
2569 {
2570 if (&handle_lib_objects ($xlib, $xlib . '_LIBADD'))
2571 {
2572 $seen_libobjs = 1;
2573 }
2574 }
2575 else
2576 {
2577 &define_variable ($xlib . "_LIBADD", '', $where);
2578 }
2580 reject_var ($xlib . '_LDADD',
2581 "use `${xlib}_LIBADD', not `${xlib}_LDADD'");
2583 # Make sure we at look at this.
2584 set_seen ($xlib . '_DEPENDENCIES');
2586 &handle_source_transform ($xlib, $onelib, $obj, $where,
2587 NONLIBTOOL => 1, LIBTOOL => 0);
2589 # If the resulting library lies into a subdirectory,
2590 # make sure this directory will exist.
2591 my $dirstamp = require_build_directory_maybe ($onelib);
2593 $output_rules .= &file_contents ('library',
2594 $where,
2595 LIBRARY => $onelib,
2596 XLIBRARY => $xlib,
2597 DIRSTAMP => $dirstamp);
2599 if ($seen_libobjs)
2600 {
2601 if (var ($xlib . '_LIBADD'))
2602 {
2603 &check_libobjs_sources ($xlib, $xlib . '_LIBADD');
2604 }
2605 }
2606 }
2607 }
2610 # handle_ltlibraries ()
2611 # ---------------------
2612 # Handle shared libraries.
2613 sub handle_ltlibraries
2614 {
2615 my @liblist = &am_install_var ('ltlib', 'LTLIBRARIES',
2616 'noinst', 'lib', 'pkglib', 'check');
2617 return if ! @liblist;
2619 my @prefix = am_primary_prefixes ('LTLIBRARIES', 0, 'lib', 'pkglib',
2620 'noinst', 'check');
2622 if (@prefix)
2623 {
2624 my $var = rvar ($prefix[0] . '_LTLIBRARIES');
2625 $var->requires_variables ('Libtool library used', 'LIBTOOL');
2626 }
2628 my %instdirs = ();
2629 my %instconds = ();
2630 my %liblocations = (); # Location (in Makefile.am) of each library.
2632 foreach my $key (@prefix)
2633 {
2634 # Get the installation directory of each library.
2635 (my $dir = $key) =~ s/^nobase_//;
2636 my $var = rvar ($key . '_LTLIBRARIES');
2638 # We reject libraries which are installed in several places
2639 # in the same condition, because we can only specify one
2640 # `-rpath' option.
2641 $var->traverse_recursively
2642 (sub
2643 {
2644 my ($var, $val, $cond, $full_cond) = @_;
2645 my $hcond = $full_cond->human;
2646 my $where = $var->rdef ($cond)->location;
2647 # A library cannot be installed in different directory
2648 # in overlapping conditions.
2649 if (exists $instconds{$val})
2650 {
2651 my ($msg, $acond) =
2652 $instconds{$val}->ambiguous_p ($val, $full_cond);
2654 if ($msg)
2655 {
2656 error ($where, $msg, partial => 1);
2658 my $dirtxt = "installed in `$dir'";
2659 $dirtxt = "built for `$dir'"
2660 if $dir eq 'EXTRA' || $dir eq 'noinst' || $dir eq 'check';
2661 my $dircond =
2662 $full_cond->true ? "" : " in condition $hcond";
2664 error ($where, "`$val' should be $dirtxt$dircond ...",
2665 partial => 1);
2667 my $hacond = $acond->human;
2668 my $adir = $instdirs{$val}{$acond};
2669 my $adirtxt = "installed in `$adir'";
2670 $adirtxt = "built for `$adir'"
2671 if ($adir eq 'EXTRA' || $adir eq 'noinst'
2672 || $adir eq 'check');
2673 my $adircond = $acond->true ? "" : " in condition $hacond";
2675 my $onlyone = ($dir ne $adir) ?
2676 ("\nLibtool libraries can be built for only one "
2677 . "destination.") : "";
2679 error ($liblocations{$val}{$acond},
2680 "... and should also be $adirtxt$adircond.$onlyone");
2681 return;
2682 }
2683 }
2684 else
2685 {
2686 $instconds{$val} = new Automake::DisjConditions;
2687 }
2688 $instdirs{$val}{$full_cond} = $dir;
2689 $liblocations{$val}{$full_cond} = $where;
2690 $instconds{$val} = $instconds{$val}->merge ($full_cond);
2691 },
2692 sub
2693 {
2694 return ();
2695 },
2696 skip_ac_subst => 1);
2697 }
2699 foreach my $pair (@liblist)
2700 {
2701 my ($where, $onelib) = @$pair;
2703 my $seen_libobjs = 0;
2704 my $obj = get_object_extension '.lo';
2706 # Canonicalize names and check for misspellings.
2707 my $xlib = &check_canonical_spelling ($onelib, '_LIBADD', '_LDFLAGS',
2708 '_SOURCES', '_OBJECTS',
2709 '_DEPENDENCIES');
2711 # Check that the library fits the standard naming convention.
2712 my $libname_rx = '^lib.*\.la';
2713 my $ldvar = var ("${xlib}_LDFLAGS") || var ('AM_LDFLAGS');
2714 my $ldvar2 = var ('LDFLAGS');
2715 if (($ldvar && grep (/-module/, $ldvar->value_as_list_recursive))
2716 || ($ldvar2 && grep (/-module/, $ldvar2->value_as_list_recursive)))
2717 {
2718 # Relax name checking for libtool modules.
2719 $libname_rx = '\.la';
2720 }
2722 my $bn = basename ($onelib);
2723 if ($bn !~ /$libname_rx$/)
2724 {
2725 my $type = 'library';
2726 if ($libname_rx eq '\.la')
2727 {
2728 $bn =~ s/^(lib|)(.*?)(?:\.[^.]*)?$/$1$2.la/;
2729 $type = 'module';
2730 }
2731 else
2732 {
2733 $bn =~ s/^(?:lib)?(.*?)(?:\.[^.]*)?$/lib$1.la/;
2734 }
2735 my $suggestion = dirname ($onelib) . "/$bn";
2736 $suggestion =~ s|^\./||g;
2737 msg ('error-gnu/warn', $where,
2738 "`$onelib' is not a standard libtool $type name\n"
2739 . "did you mean `$suggestion'?")
2740 }
2742 $where->push_context ("while processing Libtool library `$onelib'");
2743 $where->set (INTERNAL->get);
2745 # Make sure we look at these.
2746 set_seen ($xlib . '_LDFLAGS');
2747 set_seen ($xlib . '_DEPENDENCIES');
2749 # Generate support for conditional object inclusion in
2750 # libraries.
2751 if (var ($xlib . '_LIBADD'))
2752 {
2753 if (&handle_lib_objects ($xlib, $xlib . '_LIBADD'))
2754 {
2755 $seen_libobjs = 1;
2756 }
2757 }
2758 else
2759 {
2760 &define_variable ($xlib . "_LIBADD", '', $where);
2761 }
2763 reject_var ("${xlib}_LDADD",
2764 "use `${xlib}_LIBADD', not `${xlib}_LDADD'");
2767 my $linker = &handle_source_transform ($xlib, $onelib, $obj, $where,
2768 NONLIBTOOL => 0, LIBTOOL => 1);
2770 # Determine program to use for link.
2771 my $xlink = &define_per_target_linker_variable ($linker, $xlib);
2773 my $rpathvar = "am_${xlib}_rpath";
2774 my $rpath = "\$($rpathvar)";
2775 foreach my $rcond ($instconds{$onelib}->conds)
2776 {
2777 my $val;
2778 if ($instdirs{$onelib}{$rcond} eq 'EXTRA'
2779 || $instdirs{$onelib}{$rcond} eq 'noinst'
2780 || $instdirs{$onelib}{$rcond} eq 'check')
2781 {
2782 # It's an EXTRA_ library, so we can't specify -rpath,
2783 # because we don't know where the library will end up.
2784 # The user probably knows, but generally speaking automake
2785 # doesn't -- and in fact configure could decide
2786 # dynamically between two different locations.
2787 $val = '';
2788 }
2789 else
2790 {
2791 $val = ('-rpath $(' . $instdirs{$onelib}{$rcond} . 'dir)');
2792 }
2793 if ($rcond->true)
2794 {
2795 # If $rcond is true there is only one condition and
2796 # there is no point defining an helper variable.
2797 $rpath = $val;
2798 }
2799 else
2800 {
2801 define_pretty_variable ($rpathvar, $rcond, INTERNAL, $val);
2802 }
2803 }
2805 # If the resulting library lies into a subdirectory,
2806 # make sure this directory will exist.
2807 my $dirstamp = require_build_directory_maybe ($onelib);
2809 # Remember to cleanup .libs/ in this directory.
2810 my $dirname = dirname $onelib;
2811 $libtool_clean_directories{$dirname} = 1;
2813 $output_rules .= &file_contents ('ltlibrary',
2814 $where,
2815 LTLIBRARY => $onelib,
2816 XLTLIBRARY => $xlib,
2817 RPATH => $rpath,
2818 XLINK => $xlink,
2819 DIRSTAMP => $dirstamp);
2820 if ($seen_libobjs)
2821 {
2822 if (var ($xlib . '_LIBADD'))
2823 {
2824 &check_libobjs_sources ($xlib, $xlib . '_LIBADD');
2825 }
2826 }
2827 }
2828 }
2830 # See if any _SOURCES variable were misspelled.
2831 sub check_typos ()
2832 {
2833 # It is ok if the user sets this particular variable.
2834 set_seen 'AM_LDFLAGS';
2836 foreach my $primary ('SOURCES', 'LIBADD', 'LDADD', 'LDFLAGS', 'DEPENDENCIES')
2837 {
2838 foreach my $var (variables $primary)
2839 {
2840 my $varname = $var->name;
2841 # A configure variable is always legitimate.
2842 next if exists $configure_vars{$varname};
2844 for my $cond ($var->conditions->conds)
2845 {
2846 $varname =~ /^(?:nobase_)?(?:dist_|nodist_)?(.*)_[[:alnum:]]+$/;
2847 msg_var ('syntax', $var, "variable `$varname' is defined but no"
2848 . " program or\nlibrary has `$1' as canonic name"
2849 . " (possible typo)")
2850 unless $var->rdef ($cond)->seen;
2851 }
2852 }
2853 }
2854 }
2857 # Handle scripts.
2858 sub handle_scripts
2859 {
2860 # NOTE we no longer automatically clean SCRIPTS, because it is
2861 # useful to sometimes distribute scripts verbatim. This happens
2862 # e.g. in Automake itself.
2863 &am_install_var ('-candist', 'scripts', 'SCRIPTS',
2864 'bin', 'sbin', 'libexec', 'pkgdata',
2865 'noinst', 'check');
2866 }
2871 ## ------------------------ ##
2872 ## Handling Texinfo files. ##
2873 ## ------------------------ ##
2875 # ($OUTFILE, $VFILE, @CLEAN_FILES)
2876 # &scan_texinfo_file ($FILENAME)
2877 # ------------------------------
2878 # $OUTFILE - name of the info file produced by $FILENAME.
2879 # $VFILE - name of the version.texi file used (undef if none).
2880 # @CLEAN_FILES - list of byproducts (indexes etc.)
2881 sub scan_texinfo_file ($)
2882 {
2883 my ($filename) = @_;
2885 # Some of the following extensions are always created, no matter
2886 # whether indexes are used or not. Other (like cps, fns, ... pgs)
2887 # are only created when they are used. We used to scan $FILENAME
2888 # for their use, but that is not enough: they could be used in
2889 # included files. We can't scan included files because we don't
2890 # know the include path. Therefore we always erase these files, no
2891 # matter whether they are used or not.
2892 #
2893 # (tmp is only created if an @macro is used and a certain e-TeX
2894 # feature is not available.)
2895 my %clean_suffixes =
2896 map { $_ => 1 } (qw(aux log toc tmp
2897 cp cps
2898 fn fns
2899 ky kys
2900 vr vrs
2901 tp tps
2902 pg pgs)); # grep 'new.*index' texinfo.tex
2904 my $texi = new Automake::XFile "< $filename";
2905 verb "reading $filename";
2907 my ($outfile, $vfile);
2908 while ($_ = $texi->getline)
2909 {
2910 if (/^\@setfilename +(\S+)/)
2911 {
2912 # Honor only the first @setfilename. (It's possible to have
2913 # more occurrences later if the manual shows examples of how
2914 # to use @setfilename...)
2915 next if $outfile;
2917 $outfile = $1;
2918 if ($outfile =~ /\.([^.]+)$/ && $1 ne 'info')
2919 {
2920 error ("$filename:$.",
2921 "output `$outfile' has unrecognized extension");
2922 return;
2923 }
2924 }
2925 # A "version.texi" file is actually any file whose name matches
2926 # "vers*.texi".
2927 elsif (/^\@include\s+(vers[^.]*\.texi)\s*$/)
2928 {
2929 $vfile = $1;
2930 }
2932 # Try to find new or unused indexes.
2934 # Creating a new category of index.
2935 elsif (/^\@def(code)?index (\w+)/)
2936 {
2937 $clean_suffixes{$2} = 1;
2938 $clean_suffixes{"$2s"} = 1;
2939 }
2941 # Merging an index into an another.
2942 elsif (/^\@syn(code)?index (\w+) (\w+)/)
2943 {
2944 delete $clean_suffixes{"$2s"};
2945 $clean_suffixes{"$3s"} = 1;
2946 }
2948 }
2950 if (! $outfile)
2951 {
2952 err_am "`$filename' missing \@setfilename";
2953 return;
2954 }
2956 my $infobase = basename ($filename);
2957 $infobase =~ s/\.te?xi(nfo)?$//;
2958 return ($outfile, $vfile,
2959 map { "$infobase.$_" } (sort keys %clean_suffixes));
2960 }
2963 # ($DIRSTAMP, @CLEAN_FILES)
2964 # output_texinfo_build_rules ($SOURCE, $DEST, $INSRC, @DEPENDENCIES)
2965 # ------------------------------------------------------------------
2966 # SOURCE - the source Texinfo file
2967 # DEST - the destination Info file
2968 # INSRC - wether DEST should be built in the source tree
2969 # DEPENDENCIES - known dependencies
2970 sub output_texinfo_build_rules ($$$@)
2971 {
2972 my ($source, $dest, $insrc, @deps) = @_;
2974 # Split `a.texi' into `a' and `.texi'.
2975 my ($spfx, $ssfx) = ($source =~ /^(.*?)(\.[^.]*)?$/);
2976 my ($dpfx, $dsfx) = ($dest =~ /^(.*?)(\.[^.]*)?$/);
2978 $ssfx ||= "";
2979 $dsfx ||= "";
2981 # We can output two kinds of rules: the "generic" rules use Make
2982 # suffix rules and are appropriate when $source and $dest do not lie
2983 # in a sub-directory; the "specific" rules are needed in the other
2984 # case.
2985 #
2986 # The former are output only once (this is not really apparent here,
2987 # but just remember that some logic deeper in Automake will not
2988 # output the same rule twice); while the later need to be output for
2989 # each Texinfo source.
2990 my $generic;
2991 my $makeinfoflags;
2992 my $sdir = dirname $source;
2993 if ($sdir eq '.' && dirname ($dest) eq '.')
2994 {
2995 $generic = 1;
2996 $makeinfoflags = '-I $(srcdir)';
2997 }
2998 else
2999 {
3000 $generic = 0;
3001 $makeinfoflags = "-I $sdir -I \$(srcdir)/$sdir";
3002 }
3004 # A directory can contain two kinds of info files: some built in the
3005 # source tree, and some built in the build tree. The rules are
3006 # different in each case. However we cannot output two different
3007 # set of generic rules. Because in-source builds are more usual, we
3008 # use generic rules in this case and fall back to "specific" rules
3009 # for build-dir builds. (It should not be a problem to invert this
3010 # if needed.)
3011 $generic = 0 unless $insrc;
3013 # We cannot use a suffix rule to build info files with an empty
3014 # extension. Otherwise we would output a single suffix inference
3015 # rule, with separate dependencies, as in
3016 #
3017 # .texi:
3018 # $(MAKEINFO) ...
3019 # foo.info: foo.texi
3020 #
3021 # which confuse Solaris make. (See the Autoconf manual for
3022 # details.) Therefore we use a specific rule in this case. This
3023 # applies to info files only (dvi and pdf files always have an
3024 # extension).
3025 my $generic_info = ($generic && $dsfx) ? 1 : 0;
3027 # If the resulting file lie into a subdirectory,
3028 # make sure this directory will exist.
3029 my $dirstamp = require_build_directory_maybe ($dest);
3031 my $dipfx = ($insrc ? '$(srcdir)/' : '') . $dpfx;
3033 $output_rules .= file_contents ('texibuild',
3034 new Automake::Location,
3035 DEPS => "@deps",
3036 DEST_PREFIX => $dpfx,
3037 DEST_INFO_PREFIX => $dipfx,
3038 DEST_SUFFIX => $dsfx,
3039 DIRSTAMP => $dirstamp,
3040 GENERIC => $generic,
3041 GENERIC_INFO => $generic_info,
3042 INSRC => $insrc,
3043 MAKEINFOFLAGS => $makeinfoflags,
3044 SOURCE => ($generic
3045 ? '$<' : $source),
3046 SOURCE_INFO => ($generic_info
3047 ? '$<' : $source),
3048 SOURCE_REAL => $source,
3049 SOURCE_SUFFIX => $ssfx,
3050 );
3051 return ($dirstamp, "$dpfx.dvi", "$dpfx.pdf", "$dpfx.ps", "$dpfx.html");
3052 }
3055 # $TEXICLEANS
3056 # handle_texinfo_helper ($info_texinfos)
3057 # --------------------------------------
3058 # Handle all Texinfo source; helper for handle_texinfo.
3059 sub handle_texinfo_helper ($)
3060 {
3061 my ($info_texinfos) = @_;
3062 my (@infobase, @info_deps_list, @texi_deps);
3063 my %versions;
3064 my $done = 0;
3065 my @texi_cleans;
3067 # Build a regex matching user-cleaned files.
3068 my $d = var 'DISTCLEANFILES';
3069 my $c = var 'CLEANFILES';
3070 my @f = ();
3071 push @f, $d->value_as_list_recursive (inner_expand => 1) if $d;
3072 push @f, $c->value_as_list_recursive (inner_expand => 1) if $c;
3073 @f = map { s|[^A-Za-z_0-9*\[\]\-]|\\$&|g; s|\*|[^/]*|g; $_; } @f;
3074 my $user_cleaned_files = '^(?:' . join ('|', @f) . ')$';
3076 foreach my $texi
3077 ($info_texinfos->value_as_list_recursive (inner_expand => 1))
3078 {
3079 my $infobase = $texi;
3080 $infobase =~ s/\.(txi|texinfo|texi)$//;
3082 if ($infobase eq $texi)
3083 {
3084 # FIXME: report line number.
3085 err_am "texinfo file `$texi' has unrecognized extension";
3086 next;
3087 }
3089 push @infobase, $infobase;
3091 # If 'version.texi' is referenced by input file, then include
3092 # automatic versioning capability.
3093 my ($out_file, $vtexi, @clean_files) =
3094 scan_texinfo_file ("$relative_dir/$texi")
3095 or next;
3096 push (@texi_cleans, @clean_files);
3098 # If the Texinfo source is in a subdirectory, create the
3099 # resulting info in this subdirectory. If it is in the current
3100 # directory, try hard to not prefix "./" because it breaks the
3101 # generic rules.
3102 my $outdir = dirname ($texi) . '/';
3103 $outdir = "" if $outdir eq './';
3104 $out_file = $outdir . $out_file;
3106 # Until Automake 1.6.3, .info files were built in the
3107 # source tree. This was an obstacle to the support of
3108 # non-distributed .info files, and non-distributed .texi
3109 # files.
3110 #
3111 # * Non-distributed .texi files is important in some packages
3112 # where .texi files are built at make time, probably using
3113 # other binaries built in the package itself, maybe using
3114 # tools or information found on the build host. Because
3115 # these files are not distributed they are always rebuilt
3116 # at make time; they should therefore not lie in the source
3117 # directory. One plan was to support this using
3118 # nodist_info_TEXINFOS or something similar. (Doing this
3119 # requires some sanity checks. For instance Automake should
3120 # not allow:
3121 # dist_info_TEXINFO = foo.texi
3122 # nodist_foo_TEXINFO = included.texi
3123 # because a distributed file should never depend on a
3124 # non-distributed file.)
3125 #
3126 # * If .texi files are not distributed, then .info files should
3127 # not be distributed either. There are also cases where one
3128 # want to distribute .texi files, but do not want to
3129 # distribute the .info files. For instance the Texinfo package
3130 # distributes the tool used to build these files; it would
3131 # be a waste of space to distribute them. It's not clear
3132 # which syntax we should use to indicate that .info files should
3133 # not be distributed. Akim Demaille suggested that eventually
3134 # we switch to a new syntax:
3135 # | Maybe we should take some inspiration from what's already
3136 # | done in the rest of Automake. Maybe there is too much
3137 # | syntactic sugar here, and you want
3138 # | nodist_INFO = bar.info
3139 # | dist_bar_info_SOURCES = bar.texi
3140 # | bar_texi_DEPENDENCIES = foo.texi
3141 # | with a bit of magic to have bar.info represent the whole
3142 # | bar*info set. That's a lot more verbose that the current
3143 # | situation, but it is # not new, hence the user has less
3144 # | to learn.
3145 # |
3146 # | But there is still too much room for meaningless specs:
3147 # | nodist_INFO = bar.info
3148 # | dist_bar_info_SOURCES = bar.texi
3149 # | dist_PS = bar.ps something-written-by-hand.ps
3150 # | nodist_bar_ps_SOURCES = bar.texi
3151 # | bar_texi_DEPENDENCIES = foo.texi
3152 # | here bar.texi is dist_ in line 2, and nodist_ in 4.
3153 #
3154 # Back to the point, it should be clear that in order to support
3155 # non-distributed .info files, we need to build them in the
3156 # build tree, not in the source tree (non-distributed .texi
3157 # files are less of a problem, because we do not output build
3158 # rules for them). In Automake 1.7 .info build rules have been
3159 # largely cleaned up so that .info files get always build in the
3160 # build tree, even when distributed. The idea was that
3161 # (1) if during a VPATH build the .info file was found to be
3162 # absent or out-of-date (in the source tree or in the
3163 # build tree), Make would rebuild it in the build tree.
3164 # If an up-to-date source-tree of the .info file existed,
3165 # make would not rebuild it in the build tree.
3166 # (2) having two copies of .info files, one in the source tree
3167 # and one (newer) in the build tree is not a problem
3168 # because `make dist' always pick files in the build tree
3169 # first.
3170 # However it turned out the be a bad idea for several reasons:
3171 # * Tru64, OpenBSD, and FreeBSD (not NetBSD) Make do not behave
3172 # like GNU Make on point (1) above. These implementations
3173 # of Make would always rebuild .info files in the build
3174 # tree, even if such files were up to date in the source
3175 # tree. Consequently, it was impossible to perform a VPATH
3176 # build of a package containing Texinfo files using these
3177 # Make implementations.
3178 # (Refer to the Autoconf Manual, section "Limitation of
3179 # Make", paragraph "VPATH", item "target lookup", for
3180 # an account of the differences between these
3181 # implementations.)
3182 # * The GNU Coding Standards require these files to be built
3183 # in the source-tree (when they are distributed, that is).
3184 # * Keeping a fresher copy of distributed files in the
3185 # build tree can be annoying during development because
3186 # - if the files is kept under CVS, you really want it
3187 # to be updated in the source tree
3188 # - it is confusing that `make distclean' does not erase
3189 # all files in the build tree.
3190 #
3191 # Consequently, starting with Automake 1.8, .info files are
3192 # built in the source tree again. Because we still plan to
3193 # support non-distributed .info files at some point, we
3194 # have a single variable ($INSRC) that controls whether
3195 # the current .info file must be built in the source tree
3196 # or in the build tree. Actually this variable is switched
3197 # off for .info files that appear to be cleaned; this is
3198 # for backward compatibility with package such as Texinfo,
3199 # which do things like
3200 # info_TEXINFOS = texinfo.txi info-stnd.texi info.texi
3201 # DISTCLEANFILES = texinfo texinfo-* info*.info*
3202 # # Do not create info files for distribution.
3203 # dist-info:
3204 # in order not to distribute .info files.
3205 my $insrc = ($out_file =~ $user_cleaned_files) ? 0 : 1;
3207 my $soutdir = '$(srcdir)/' . $outdir;
3208 $outdir = $soutdir if $insrc;
3210 # If user specified file_TEXINFOS, then use that as explicit
3211 # dependency list.
3212 @texi_deps = ();
3213 push (@texi_deps, "$soutdir$vtexi") if $vtexi;
3215 my $canonical = canonicalize ($infobase);
3216 if (var ($canonical . "_TEXINFOS"))
3217 {
3218 push (@texi_deps, '$(' . $canonical . '_TEXINFOS)');
3219 push_dist_common ('$(' . $canonical . '_TEXINFOS)');
3220 }
3222 my ($dirstamp, @cfiles) =
3223 output_texinfo_build_rules ($texi, $out_file, $insrc, @texi_deps);
3224 push (@texi_cleans, @cfiles);
3226 push (@info_deps_list, $out_file);
3228 # If a vers*.texi file is needed, emit the rule.
3229 if ($vtexi)
3230 {
3231 err_am ("`$vtexi', included in `$texi', "
3232 . "also included in `$versions{$vtexi}'")
3233 if defined $versions{$vtexi};
3234 $versions{$vtexi} = $texi;
3236 # We number the stamp-vti files. This is doable since the
3237 # actual names don't matter much. We only number starting
3238 # with the second one, so that the common case looks nice.
3239 my $vti = ($done ? $done : 'vti');
3240 ++$done;
3242 # This is ugly, but it is our historical practice.
3243 if ($config_aux_dir_set_in_configure_ac)
3244 {
3245 require_conf_file_with_macro (TRUE, 'info_TEXINFOS', FOREIGN,
3246 'mdate-sh');
3247 }
3248 else
3249 {
3250 require_file_with_macro (TRUE, 'info_TEXINFOS',
3251 FOREIGN, 'mdate-sh');
3252 }
3254 my $conf_dir;
3255 if ($config_aux_dir_set_in_configure_ac)
3256 {
3257 $conf_dir = "$am_config_aux_dir/";
3258 }
3259 else
3260 {
3261 $conf_dir = '$(srcdir)/';
3262 }
3263 $output_rules .= file_contents ('texi-vers',
3264 new Automake::Location,
3265 TEXI => $texi,
3266 VTI => $vti,
3267 STAMPVTI => "${soutdir}stamp-$vti",
3268 VTEXI => "$soutdir$vtexi",
3269 MDDIR => $conf_dir,
3270 DIRSTAMP => $dirstamp);
3271 }
3272 }
3274 # Handle location of texinfo.tex.
3275 my $need_texi_file = 0;
3276 my $texinfodir;
3277 if (var ('TEXINFO_TEX'))
3278 {
3279 # The user defined TEXINFO_TEX so assume he knows what he is
3280 # doing.
3281 $texinfodir = ('$(srcdir)/'
3282 . dirname (variable_value ('TEXINFO_TEX')));
3283 }
3284 elsif (option 'cygnus')
3285 {
3286 $texinfodir = '$(top_srcdir)/../texinfo';
3287 define_variable ('TEXINFO_TEX', "$texinfodir/texinfo.tex", INTERNAL);
3288 }
3289 elsif ($config_aux_dir_set_in_configure_ac)
3290 {
3291 $texinfodir = $am_config_aux_dir;
3292 define_variable ('TEXINFO_TEX', "$texinfodir/texinfo.tex", INTERNAL);
3293 $need_texi_file = 2; # so that we require_conf_file later
3294 }
3295 else
3296 {
3297 $texinfodir = '$(srcdir)';
3298 $need_texi_file = 1;
3299 }
3300 define_variable ('am__TEXINFO_TEX_DIR', $texinfodir, INTERNAL);
3302 push (@dist_targets, 'dist-info');
3304 if (! option 'no-installinfo')
3305 {
3306 # Make sure documentation is made and installed first. Use
3307 # $(INFO_DEPS), not 'info', because otherwise recursive makes
3308 # get run twice during "make all".
3309 unshift (@all, '$(INFO_DEPS)');
3310 }
3312 define_files_variable ("DVIS", @infobase, 'dvi', INTERNAL);
3313 define_files_variable ("PDFS", @infobase, 'pdf', INTERNAL);
3314 define_files_variable ("PSS", @infobase, 'ps', INTERNAL);
3315 define_files_variable ("HTMLS", @infobase, 'html', INTERNAL);
3317 # This next isn't strictly needed now -- the places that look here
3318 # could easily be changed to look in info_TEXINFOS. But this is
3319 # probably better, in case noinst_TEXINFOS is ever supported.
3320 define_variable ("TEXINFOS", variable_value ('info_TEXINFOS'), INTERNAL);
3322 # Do some error checking. Note that this file is not required
3323 # when in Cygnus mode; instead we defined TEXINFO_TEX explicitly
3324 # up above.
3325 if ($need_texi_file && ! option 'no-texinfo.tex')
3326 {
3327 if ($need_texi_file > 1)
3328 {
3329 require_conf_file_with_macro (TRUE, 'info_TEXINFOS', FOREIGN,
3330 'texinfo.tex');
3331 }
3332 else
3333 {
3334 require_file_with_macro (TRUE, 'info_TEXINFOS', FOREIGN,
3335 'texinfo.tex');
3336 }
3337 }
3339 return makefile_wrap ("", "\t ", @texi_cleans);
3340 }
3343 # handle_texinfo ()
3344 # -----------------
3345 # Handle all Texinfo source.
3346 sub handle_texinfo ()
3347 {
3348 reject_var 'TEXINFOS', "`TEXINFOS' is an anachronism; use `info_TEXINFOS'";
3349 # FIXME: I think this is an obsolete future feature name.
3350 reject_var 'html_TEXINFOS', "HTML generation not yet supported";
3352 my $info_texinfos = var ('info_TEXINFOS');
3353 my $texiclean = "";
3354 if ($info_texinfos)
3355 {
3356 $texiclean = handle_texinfo_helper ($info_texinfos);
3357 }
3358 $output_rules .= file_contents ('texinfos',
3359 new Automake::Location,
3360 TEXICLEAN => $texiclean,
3361 'LOCAL-TEXIS' => !!$info_texinfos);
3362 }
3365 # Handle any man pages.
3366 sub handle_man_pages
3367 {
3368 reject_var 'MANS', "`MANS' is an anachronism; use `man_MANS'";
3370 # Find all the sections in use. We do this by first looking for
3371 # "standard" sections, and then looking for any additional
3372 # sections used in man_MANS.
3373 my (%sections, %vlist);
3374 # We handle nodist_ for uniformity. man pages aren't distributed
3375 # by default so it isn't actually very important.
3376 foreach my $pfx ('', 'dist_', 'nodist_')
3377 {
3378 # Add more sections as needed.
3379 foreach my $section ('0'..'9', 'n', 'l')
3380 {
3381 my $varname = $pfx . 'man' . $section . '_MANS';
3382 if (var ($varname))
3383 {
3384 $sections{$section} = 1;
3385 $varname = '$(' . $varname . ')';
3386 $vlist{$varname} = 1;
3388 &push_dist_common ($varname)
3389 if $pfx eq 'dist_';
3390 }
3391 }
3393 my $varname = $pfx . 'man_MANS';
3394 my $var = var ($varname);
3395 if ($var)
3396 {
3397 foreach ($var->value_as_list_recursive)
3398 {
3399 # A page like `foo.1c' goes into man1dir.
3400 if (/\.([0-9a-z])([a-z]*)$/)
3401 {
3402 $sections{$1} = 1;
3403 }
3404 }
3406 $varname = '$(' . $varname . ')';
3407 $vlist{$varname} = 1;
3408 &push_dist_common ($varname)
3409 if $pfx eq 'dist_';
3410 }
3411 }
3413 return unless %sections;
3415 # Now for each section, generate an install and uninstall rule.
3416 # Sort sections so output is deterministic.
3417 foreach my $section (sort keys %sections)
3418 {
3419 $output_rules .= &file_contents ('mans',
3420 new Automake::Location,
3421 SECTION => $section);
3422 }
3424 my @mans = sort keys %vlist;
3425 $output_vars .= file_contents ('mans-vars',
3426 new Automake::Location,
3427 MANS => "@mans");
3429 push (@all, '$(MANS)')
3430 unless option 'no-installman';
3431 }
3433 # Handle DATA variables.
3434 sub handle_data
3435 {
3436 &am_install_var ('-noextra', '-candist', 'data', 'DATA',
3437 'data', 'dataroot', 'dvi', 'html', 'pdf', 'ps',
3438 'sysconf', 'sharedstate', 'localstate',
3439 'pkgdata', 'lisp', 'noinst', 'check');
3440 }
3442 # Handle TAGS.
3443 sub handle_tags
3444 {
3445 my @tag_deps = ();
3446 my @ctag_deps = ();
3447 if (var ('SUBDIRS'))
3448 {
3449 $output_rules .= ("tags-recursive:\n"
3450 . "\tlist=\'\$(SUBDIRS)\'; for subdir in \$\$list; do \\\n"
3451 # Never fail here if a subdir fails; it
3452 # isn't important.
3453 . "\t test \"\$\$subdir\" = . || (cd \$\$subdir"
3454 . " && \$(MAKE) \$(AM_MAKEFLAGS) tags); \\\n"
3455 . "\tdone\n");
3456 push (@tag_deps, 'tags-recursive');
3457 &depend ('.PHONY', 'tags-recursive');
3459 $output_rules .= ("ctags-recursive:\n"
3460 . "\tlist=\'\$(SUBDIRS)\'; for subdir in \$\$list; do \\\n"
3461 # Never fail here if a subdir fails; it
3462 # isn't important.
3463 . "\t test \"\$\$subdir\" = . || (cd \$\$subdir"
3464 . " && \$(MAKE) \$(AM_MAKEFLAGS) ctags); \\\n"
3465 . "\tdone\n");
3466 push (@ctag_deps, 'ctags-recursive');
3467 &depend ('.PHONY', 'ctags-recursive');
3468 }
3470 if (&saw_sources_p (1)
3471 || var ('ETAGS_ARGS')
3472 || @tag_deps)
3473 {
3474 my @config;
3475 foreach my $spec (@config_headers)
3476 {
3477 my ($out, @ins) = split_config_file_spec ($spec);
3478 foreach my $in (@ins)
3479 {
3480 # If the config header source is in this directory,
3481 # require it.
3482 push @config, basename ($in)
3483 if $relative_dir eq dirname ($in);
3484 }
3485 }
3486 $output_rules .= &file_contents ('tags',
3487 new Automake::Location,
3488 CONFIG => "@config",
3489 TAGSDIRS => "@tag_deps",
3490 CTAGSDIRS => "@ctag_deps");
3492 set_seen 'TAGS_DEPENDENCIES';
3493 }
3494 elsif (reject_var ('TAGS_DEPENDENCIES',
3495 "doesn't make sense to define `TAGS_DEPENDENCIES'"
3496 . "without\nsources or `ETAGS_ARGS'"))
3497 {
3498 }
3499 else
3500 {
3501 # Every Makefile must define some sort of TAGS rule.
3502 # Otherwise, it would be possible for a top-level "make TAGS"
3503 # to fail because some subdirectory failed.
3504 $output_rules .= "tags: TAGS\nTAGS:\n\n";
3505 # Ditto ctags.
3506 $output_rules .= "ctags: CTAGS\nCTAGS:\n\n";
3507 }
3508 }
3510 # Handle multilib support.
3511 sub handle_multilib
3512 {
3513 if ($seen_multilib && $relative_dir eq '.')
3514 {
3515 $output_rules .= &file_contents ('multilib', new Automake::Location);
3516 push (@all, 'all-multi');
3517 }
3518 }
3521 # user_phony_rule ($NAME)
3522 # -----------------------
3523 # Return false if rule $NAME does not exist. Otherwise,
3524 # declare it as phony, complete its definition (in case it is
3525 # conditional), and return its Automake::Rule instance.
3526 sub user_phony_rule ($)
3527 {
3528 my ($name) = @_;
3529 my $rule = rule $name;
3530 if ($rule)
3531 {
3532 depend ('.PHONY', $name);
3533 # Define $NAME in all condition where it is not already defined,
3534 # so that it is always OK to depend on $NAME.
3535 for my $c ($rule->not_always_defined_in_cond (TRUE)->conds)
3536 {
3537 Automake::Rule::define ($name, 'internal', RULE_AUTOMAKE,
3538 $c, INTERNAL);
3539 $output_rules .= $c->subst_string . "$name:\n";
3540 }
3541 }
3542 return $rule;
3543 }
3546 # $BOOLEAN
3547 # &for_dist_common ($A, $B)
3548 # -------------------------
3549 # Subroutine for &handle_dist: sort files to dist.
3550 #
3551 # We put README first because it then becomes easier to make a
3552 # Usenet-compliant shar file (in these, README must be first).
3553 #
3554 # FIXME: do more ordering of files here.
3555 sub for_dist_common
3556 {
3557 return 0
3558 if $a eq $b;
3559 return -1
3560 if $a eq 'README';
3561 return 1
3562 if $b eq 'README';
3563 return $a cmp $b;
3564 }
3566 # handle_dist
3567 # -----------
3568 # Handle 'dist' target.
3569 sub handle_dist ()
3570 {
3571 # Substitutions for distdir.am
3572 my %transform;
3574 # Define DIST_SUBDIRS. This must always be done, regardless of the
3575 # no-dist setting: target like `distclean' or `maintainer-clean' use it.
3576 my $subdirs = var ('SUBDIRS');
3577 if ($subdirs)
3578 {
3579 # If SUBDIRS is conditionally defined, then set DIST_SUBDIRS
3580 # to all possible directories, and use it. If DIST_SUBDIRS is
3581 # defined, just use it.
3583 # Note that we check DIST_SUBDIRS first on purpose, so that
3584 # we don't call has_conditional_contents for now reason.
3585 # (In the past one project used so many conditional subdirectories
3586 # that calling has_conditional_contents on SUBDIRS caused
3587 # automake to grow to 150Mb -- this should not happen with
3588 # the current implementation of has_conditional_contents,
3589 # but it's more efficient to avoid the call anyway.)
3590 if (var ('DIST_SUBDIRS'))
3591 {
3592 }
3593 elsif ($subdirs->has_conditional_contents)
3594 {
3595 define_pretty_variable
3596 ('DIST_SUBDIRS', TRUE, INTERNAL,
3597 uniq ($subdirs->value_as_list_recursive));
3598 }
3599 else
3600 {
3601 # We always define this because that is what `distclean'
3602 # wants.
3603 define_pretty_variable ('DIST_SUBDIRS', TRUE, INTERNAL,
3604 '$(SUBDIRS)');
3605 }
3606 }
3608 # The remaining definitions are only required when a dist target is used.
3609 return if option 'no-dist';
3611 # At least one of the archive formats must be enabled.
3612 if ($relative_dir eq '.')
3613 {
3614 my $archive_defined = option 'no-dist-gzip' ? 0 : 1;
3615 $archive_defined ||=
3616 grep { option "dist-$_" } qw(shar zip tarZ bzip2 lzma);
3617 error (option 'no-dist-gzip',
3618 "no-dist-gzip specified but no dist-* specified, "
3619 . "at least one archive format must be enabled")
3620 unless $archive_defined;
3621 }
3623 # Look for common files that should be included in distribution.
3624 # If the aux dir is set, and it does not have a Makefile.am, then
3625 # we check for these files there as well.
3626 my $check_aux = 0;
3627 if ($relative_dir eq '.'
3628 && $config_aux_dir_set_in_configure_ac)
3629 {
3630 if (! &is_make_dir ($config_aux_dir))
3631 {
3632 $check_aux = 1;
3633 }
3634 }
3635 foreach my $cfile (@common_files)
3636 {
3637 if (dir_has_case_matching_file ($relative_dir, $cfile)
3638 # The file might be absent, but if it can be built it's ok.
3639 || rule $cfile)
3640 {
3641 &push_dist_common ($cfile);
3642 }
3644 # Don't use `elsif' here because a file might meaningfully
3645 # appear in both directories.
3646 if ($check_aux && dir_has_case_matching_file ($config_aux_dir, $cfile))
3647 {
3648 &push_dist_common ("$config_aux_dir/$cfile")
3649 }
3650 }
3652 # We might copy elements from $configure_dist_common to
3653 # %dist_common if we think we need to. If the file appears in our
3654 # directory, we would have discovered it already, so we don't
3655 # check that. But if the file is in a subdir without a Makefile,
3656 # we want to distribute it here if we are doing `.'. Ugly!
3657 if ($relative_dir eq '.')
3658 {
3659 foreach my $file (split (' ' , $configure_dist_common))
3660 {
3661 push_dist_common ($file)
3662 unless is_make_dir (dirname ($file));
3663 }
3664 }
3666 # Files to distributed. Don't use ->value_as_list_recursive
3667 # as it recursively expands `$(dist_pkgdata_DATA)' etc.
3668 my @dist_common = split (' ', rvar ('DIST_COMMON')->variable_value);
3669 @dist_common = uniq (sort for_dist_common (@dist_common));
3670 variable_delete 'DIST_COMMON';
3671 define_pretty_variable ('DIST_COMMON', TRUE, INTERNAL, @dist_common);
3673 # Now that we've processed DIST_COMMON, disallow further attempts
3674 # to set it.
3675 $handle_dist_run = 1;
3677 # Scan EXTRA_DIST to see if we need to distribute anything from a
3678 # subdir. If so, add it to the list. I didn't want to do this
3679 # originally, but there were so many requests that I finally
3680 # relented.
3681 my $extra_dist = var ('EXTRA_DIST');
3683 $transform{'DISTCHECK-HOOK'} = !! rule 'distcheck-hook';
3684 $transform{'GETTEXT'} = $seen_gettext && !$seen_gettext_external;
3686 # If the target `dist-hook' exists, make sure it is run. This
3687 # allows users to do random weird things to the distribution
3688 # before it is packaged up.
3689 push (@dist_targets, 'dist-hook')
3690 if user_phony_rule 'dist-hook';
3691 $transform{'DIST-TARGETS'} = join (' ', @dist_targets);
3693 my $flm = option ('filename-length-max');
3694 my $filename_filter = $flm ? '.' x $flm->[1] : '';
3696 $output_rules .= &file_contents ('distdir',
3697 new Automake::Location,
3698 %transform,
3699 FILENAME_FILTER => $filename_filter);
3700 }
3703 # check_directory ($NAME, $WHERE)
3704 # -------------------------------
3705 # Ensure $NAME is a directory, and that it uses sane name.
3706 # Use $WHERE as a location in the diagnostic, if any.
3707 sub check_directory ($$)
3708 {
3709 my ($dir, $where) = @_;
3711 error $where, "required directory $relative_dir/$dir does not exist"
3712 unless -d "$relative_dir/$dir";
3714 # If an `obj/' directory exists, BSD make will enter it before
3715 # reading `Makefile'. Hence the `Makefile' in the current directory
3716 # will not be read.
3717 #
3718 # % cat Makefile
3719 # all:
3720 # echo Hello
3721 # % cat obj/Makefile
3722 # all:
3723 # echo World
3724 # % make # GNU make
3725 # echo Hello
3726 # Hello
3727 # % pmake # BSD make
3728 # echo World
3729 # World
3730 msg ('portability', $where,
3731 "naming a subdirectory `obj' causes troubles with BSD make")
3732 if $dir eq 'obj';
3734 # `aux' is probably the most important of the following forbidden name,
3735 # since it's tempting to use it as an AC_CONFIG_AUX_DIR.
3736 msg ('portability', $where,
3737 "name `$dir' is reserved on W32 and DOS platforms")
3738 if grep (/^\Q$dir\E$/i, qw/aux lpt1 lpt2 lpt3 com1 com2 com3 com4 con prn/);
3739 }
3741 # check_directories_in_var ($VARIABLE)
3742 # ------------------------------------
3743 # Recursively check all items in variables $VARIABLE as directories
3744 sub check_directories_in_var ($)
3745 {
3746 my ($var) = @_;
3747 $var->traverse_recursively
3748 (sub
3749 {
3750 my ($var, $val, $cond, $full_cond) = @_;
3751 check_directory ($val, $var->rdef ($cond)->location);
3752 return ();
3753 },
3754 undef,
3755 skip_ac_subst => 1);
3756 }
3758 # &handle_subdirs ()
3759 # ------------------
3760 # Handle subdirectories.
3761 sub handle_subdirs ()
3762 {
3763 my $subdirs = var ('SUBDIRS');
3764 return
3765 unless $subdirs;
3767 check_directories_in_var $subdirs;
3769 my $dsubdirs = var ('DIST_SUBDIRS');
3770 check_directories_in_var $dsubdirs
3771 if $dsubdirs;
3773 $output_rules .= &file_contents ('subdirs', new Automake::Location);
3774 rvar ('RECURSIVE_TARGETS')->rdef (TRUE)->{'pretty'} = VAR_SORTED; # Gross!
3775 }
3778 # ($REGEN, @DEPENDENCIES)
3779 # &scan_aclocal_m4
3780 # ----------------
3781 # If aclocal.m4 creation is automated, return the list of its dependencies.
3782 sub scan_aclocal_m4 ()
3783 {
3784 my $regen_aclocal = 0;
3786 set_seen 'CONFIG_STATUS_DEPENDENCIES';
3787 set_seen 'CONFIGURE_DEPENDENCIES';
3789 if (-f 'aclocal.m4')
3790 {
3791 &define_variable ("ACLOCAL_M4", '$(top_srcdir)/aclocal.m4', INTERNAL);
3793 my $aclocal = new Automake::XFile "< aclocal.m4";
3794 my $line = $aclocal->getline;
3795 $regen_aclocal = $line =~ 'generated automatically by aclocal';
3796 }
3798 my @ac_deps = ();
3800 if (set_seen ('ACLOCAL_M4_SOURCES'))
3801 {
3802 push (@ac_deps, '$(ACLOCAL_M4_SOURCES)');
3803 msg_var ('obsolete', 'ACLOCAL_M4_SOURCES',
3804 "`ACLOCAL_M4_SOURCES' is obsolete.\n"
3805 . "It should be safe to simply remove it.");
3806 }
3808 # Note that it might be possible that aclocal.m4 doesn't exist but
3809 # should be auto-generated. This case probably isn't very
3810 # important.
3812 return ($regen_aclocal, @ac_deps);
3813 }
3816 # Helper function for substitute_ac_subst_variables.
3817 sub substitute_ac_subst_variables_worker($)
3818 {
3819 my ($token) = @_;
3820 return "\@$token\@" if var $token;
3821 return "\${$token\}";
3822 }
3824 # substitute_ac_subst_variables ($TEXT)
3825 # -------------------------------------
3826 # Replace any occurrence of ${FOO} in $TEXT by @FOO@ if FOO is an AC_SUBST
3827 # variable.
3828 sub substitute_ac_subst_variables ($)
3829 {
3830 my ($text) = @_;
3831 $text =~ s/\${([^ \t=:+{}]+)}/&substitute_ac_subst_variables_worker ($1)/ge;
3832 return $text;
3833 }
3835 # @DEPENDENCIES
3836 # &prepend_srcdir (@INPUTS)
3837 # -------------------------
3838 # Prepend $(srcdir) or $(top_srcdir) to all @INPUTS. The idea is that
3839 # if an input file has a directory part the same as the current
3840 # directory, then the directory part is simply replaced by $(srcdir).
3841 # But if the directory part is different, then $(top_srcdir) is
3842 # prepended.
3843 sub prepend_srcdir (@)
3844 {
3845 my (@inputs) = @_;
3846 my @newinputs;
3848 foreach my $single (@inputs)
3849 {
3850 if (dirname ($single) eq $relative_dir)
3851 {
3852 push (@newinputs, '$(srcdir)/' . basename ($single));
3853 }
3854 else
3855 {
3856 push (@newinputs, '$(top_srcdir)/' . $single);
3857 }
3858 }
3859 return @newinputs;
3860 }
3862 # @DEPENDENCIES
3863 # rewrite_inputs_into_dependencies ($OUTPUT, @INPUTS)
3864 # ---------------------------------------------------
3865 # Compute a list of dependencies appropriate for the rebuild
3866 # rule of
3867 # AC_CONFIG_FILES($OUTPUT:$INPUT[0]:$INPUTS[1]:...)
3868 # Also distribute $INPUTs which are not build by another AC_CONFIG_FILES.
3869 sub rewrite_inputs_into_dependencies ($@)
3870 {
3871 my ($file, @inputs) = @_;
3872 my @res = ();
3874 for my $i (@inputs)
3875 {
3876 # We cannot create dependencies on shell variables.
3877 next if (substitute_ac_subst_variables $i) =~ /\$/;
3879 if (exists $ac_config_files_location{$i})
3880 {
3881 my $di = dirname $i;
3882 if ($di eq $relative_dir)
3883 {
3884 $i = basename $i;
3885 }
3886 # In the top-level Makefile we do not use $(top_builddir), because
3887 # we are already there, and since the targets are built without
3888 # a $(top_builddir), it helps BSD Make to match them with
3889 # dependencies.
3890 elsif ($relative_dir ne '.')
3891 {
3892 $i = '$(top_builddir)/' . $i;
3893 }
3894 }
3895 else
3896 {
3897 msg ('error', $ac_config_files_location{$file},
3898 "required file `$i' not found")
3899 unless $i =~ /\$/ || exists $output_files{$i} || -f $i;
3900 ($i) = prepend_srcdir ($i);
3901 push_dist_common ($i);
3902 }
3903 push @res, $i;
3904 }
3905 return @res;
3906 }
3910 # &handle_configure ($MAKEFILE_AM, $MAKEFILE_IN, $MAKEFILE, @INPUTS)
3911 # ------------------------------------------------------------------
3912 # Handle remaking and configure stuff.
3913 # We need the name of the input file, to do proper remaking rules.
3914 sub handle_configure ($$$@)
3915 {
3916 my ($makefile_am, $makefile_in, $makefile, @inputs) = @_;
3918 prog_error 'empty @inputs'
3919 unless @inputs;
3921 my ($rel_makefile_am, $rel_makefile_in) = prepend_srcdir ($makefile_am,
3922 $makefile_in);
3923 my $rel_makefile = basename $makefile;
3925 my $colon_infile = ':' . join (':', @inputs);
3926 $colon_infile = '' if $colon_infile eq ":$makefile.in";
3927 my @rewritten = rewrite_inputs_into_dependencies ($makefile, @inputs);
3928 my ($regen_aclocal_m4, @aclocal_m4_deps) = scan_aclocal_m4;
3929 define_pretty_variable ('am__aclocal_m4_deps', TRUE, INTERNAL,
3930 @configure_deps, @aclocal_m4_deps,
3931 '$(top_srcdir)/' . $configure_ac);
3932 my @configuredeps = ('$(am__aclocal_m4_deps)', '$(CONFIGURE_DEPENDENCIES)');
3933 push @configuredeps, '$(ACLOCAL_M4)' if -f 'aclocal.m4';
3934 define_pretty_variable ('am__configure_deps', TRUE, INTERNAL,
3935 @configuredeps);
3937 $output_rules .= file_contents
3938 ('configure',
3939 new Automake::Location,
3940 MAKEFILE => $rel_makefile,
3941 'MAKEFILE-DEPS' => "@rewritten",
3942 'CONFIG-MAKEFILE' => ($relative_dir eq '.') ? '$@' : '$(subdir)/$@',
3943 'MAKEFILE-IN' => $rel_makefile_in,
3944 'MAKEFILE-IN-DEPS' => "@include_stack",
3945 'MAKEFILE-AM' => $rel_makefile_am,
3946 STRICTNESS => global_option 'cygnus'
3947 ? 'cygnus' : $strictness_name,
3948 'USE-DEPS' => global_option 'no-dependencies'
3949 ? ' --ignore-deps' : '',
3950 'MAKEFILE-AM-SOURCES' => "$makefile$colon_infile",
3951 'REGEN-ACLOCAL-M4' => $regen_aclocal_m4);
3953 if ($relative_dir eq '.')
3954 {
3955 &push_dist_common ('acconfig.h')
3956 if -f 'acconfig.h';
3957 }
3959 # If we have a configure header, require it.
3960 my $hdr_index = 0;
3961 my @distclean_config;
3962 foreach my $spec (@config_headers)
3963 {
3964 $hdr_index += 1;
3965 # $CONFIG_H_PATH: config.h from top level.
3966 my ($config_h_path, @ins) = split_config_file_spec ($spec);
3967 my $config_h_dir = dirname ($config_h_path);
3969 # If the header is in the current directory we want to build
3970 # the header here. Otherwise, if we're at the topmost
3971 # directory and the header's directory doesn't have a
3972 # Makefile, then we also want to build the header.
3973 if ($relative_dir eq $config_h_dir
3974 || ($relative_dir eq '.' && ! &is_make_dir ($config_h_dir)))
3975 {
3976 my ($cn_sans_dir, $stamp_dir);
3977 if ($relative_dir eq $config_h_dir)
3978 {
3979 $cn_sans_dir = basename ($config_h_path);
3980 $stamp_dir = '';
3981 }
3982 else
3983 {
3984 $cn_sans_dir = $config_h_path;
3985 if ($config_h_dir eq '.')
3986 {
3987 $stamp_dir = '';
3988 }
3989 else
3990 {
3991 $stamp_dir = $config_h_dir . '/';
3992 }
3993 }
3995 # This will also distribute all inputs.
3996 @ins = rewrite_inputs_into_dependencies ($config_h_path, @ins);
3998 # Cannot define rebuild rules for filenames with shell variables.
3999 next if (substitute_ac_subst_variables $config_h_path) =~ /\$/;
4001 # Header defined in this directory.
4002 my @files;
4003 if (-f $config_h_path . '.top')
4004 {
4005 push (@files, "$cn_sans_dir.top");
4006 }
4007 if (-f $config_h_path . '.bot')
4008 {
4009 push (@files, "$cn_sans_dir.bot");
4010 }
4012 push_dist_common (@files);
4014 # For now, acconfig.h can only appear in the top srcdir.
4015 if (-f 'acconfig.h')
4016 {
4017 push (@files, '$(top_srcdir)/acconfig.h');
4018 }
4020 my $stamp = "${stamp_dir}stamp-h${hdr_index}";
4021 $output_rules .=
4022 file_contents ('remake-hdr',
4023 new Automake::Location,
4024 FILES => "@files",
4025 CONFIG_H => $cn_sans_dir,
4026 CONFIG_HIN => $ins[0],
4027 CONFIG_H_DEPS => "@ins",
4028 CONFIG_H_PATH => $config_h_path,
4029 STAMP => "$stamp");
4031 push @distclean_config, $cn_sans_dir, $stamp;
4032 }
4033 }
4035 $output_rules .= file_contents ('clean-hdr',
4036 new Automake::Location,
4037 FILES => "@distclean_config")
4038 if @distclean_config;
4040 # Distribute and define mkinstalldirs only if it is already present
4041 # in the package, for backward compatibility (some people may still
4042 # use $(mkinstalldirs)).
4043 my $mkidpath = "$config_aux_dir/mkinstalldirs";
4044 if (-f $mkidpath)
4045 {
4046 # Use require_file so that any existing script gets updated
4047 # by --force-missing.
4048 require_conf_file ($mkidpath, FOREIGN, 'mkinstalldirs');
4049 define_variable ('mkinstalldirs',
4050 "\$(SHELL) $am_config_aux_dir/mkinstalldirs", INTERNAL);
4051 }
4052 else
4053 {
4054 # Use $(install_sh), not $(MKDIR_P) because the latter requires
4055 # at least one argument, and $(mkinstalldirs) used to work
4056 # even without arguments (e.g. $(mkinstalldirs) $(conditional_dir)).
4057 define_variable ('mkinstalldirs', '$(install_sh) -d', INTERNAL);
4058 }
4060 reject_var ('CONFIG_HEADER',
4061 "`CONFIG_HEADER' is an anachronism; now determined "
4062 . "automatically\nfrom `$configure_ac'");
4064 my @config_h;
4065 foreach my $spec (@config_headers)
4066 {
4067 my ($out, @ins) = split_config_file_spec ($spec);
4068 # Generate CONFIG_HEADER define.
4069 if ($relative_dir eq dirname ($out))
4070 {
4071 push @config_h, basename ($out);
4072 }
4073 else
4074 {
4075 push @config_h, "\$(top_builddir)/$out";
4076 }
4077 }
4078 define_variable ("CONFIG_HEADER", "@config_h", INTERNAL)
4079 if @config_h;
4081 # Now look for other files in this directory which must be remade
4082 # by config.status, and generate rules for them.
4083 my @actual_other_files = ();
4084 foreach my $lfile (@other_input_files)
4085 {
4086 my $file;
4087 my @inputs;
4088 if ($lfile =~ /^([^:]*):(.*)$/)
4089 {
4090 # This is the ":" syntax of AC_OUTPUT.
4091 $file = $1;
4092 @inputs = split (':', $2);
4093 }
4094 else
4095 {
4096 # Normal usage.
4097 $file = $lfile;
4098 @inputs = $file . '.in';
4099 }
4101 # Automake files should not be stored in here, but in %MAKE_LIST.
4102 prog_error ("$lfile in \@other_input_files\n"
4103 . "\@other_input_files = (@other_input_files)")
4104 if -f $file . '.am';
4106 my $local = basename ($file);
4108 # We skip files that aren't in this directory. However, if
4109 # the file's directory does not have a Makefile, and we are
4110 # currently doing `.', then we create a rule to rebuild the
4111 # file in the subdir.
4112 my $fd = dirname ($file);
4113 if ($fd ne $relative_dir)
4114 {
4115 if ($relative_dir eq '.' && ! &is_make_dir ($fd))
4116 {
4117 $local = $file;
4118 }
4119 else
4120 {
4121 next;
4122 }
4123 }
4125 my @rewritten_inputs = rewrite_inputs_into_dependencies ($file, @inputs);
4127 # Cannot output rules for shell variables.
4128 next if (substitute_ac_subst_variables $local) =~ /\$/;
4130 $output_rules .= ($local . ': '
4131 . '$(top_builddir)/config.status '
4132 . "@rewritten_inputs\n"
4133 . "\t"
4134 . 'cd $(top_builddir) && '
4135 . '$(SHELL) ./config.status '
4136 . ($relative_dir eq '.' ? '' : '$(subdir)/')
4137 . '$@'
4138 . "\n");
4139 push (@actual_other_files, $local);
4140 }
4142 # For links we should clean destinations and distribute sources.
4143 foreach my $spec (@config_links)
4144 {
4145 my ($link, $file) = split /:/, $spec;
4146 # Some people do AC_CONFIG_LINKS($computed). We only handle
4147 # the DEST:SRC form.
4148 next unless $file;
4149 my $where = $ac_config_files_location{$link};
4151 # Skip destinations that contain shell variables.
4152 if ((substitute_ac_subst_variables $link) !~ /\$/)
4153 {
4154 # We skip links that aren't in this directory. However, if
4155 # the link's directory does not have a Makefile, and we are
4156 # currently doing `.', then we add the link to CONFIG_CLEAN_FILES
4157 # in `.'s Makefile.in.
4158 my $local = basename ($link);
4159 my $fd = dirname ($link);
4160 if ($fd ne $relative_dir)
4161 {
4162 if ($relative_dir eq '.' && ! &is_make_dir ($fd))
4163 {
4164 $local = $link;
4165 }
4166 else
4167 {
4168 $local = undef;
4169 }
4170 }
4171 push @actual_other_files, $local if $local;
4172 }
4174 # Do not process sources that contain shell variables.
4175 if ((substitute_ac_subst_variables $file) !~ /\$/)
4176 {
4177 my $fd = dirname ($file);
4179 # We distribute files that are in this directory.
4180 # At the top-level (`.') we also distribute files whose
4181 # directory does not have a Makefile.
4182 if (($fd eq $relative_dir)
4183 || ($relative_dir eq '.' && ! &is_make_dir ($fd)))
4184 {
4185 # The following will distribute $file as a side-effect when
4186 # it is appropriate (i.e., when $file is not already an output).
4187 # We do not need the result, just the side-effect.
4188 rewrite_inputs_into_dependencies ($link, $file);
4189 }
4190 }
4191 }
4193 # These files get removed by "make distclean".
4194 define_pretty_variable ('CONFIG_CLEAN_FILES', TRUE, INTERNAL,
4195 @actual_other_files);
4196 }
4198 # Handle C headers.
4199 sub handle_headers
4200 {
4201 my @r = &am_install_var ('-defaultdist', 'header', 'HEADERS', 'include',
4202 'oldinclude', 'pkginclude',
4203 'noinst', 'check');
4204 foreach (@r)
4205 {
4206 next unless $_->[1] =~ /\..*$/;
4207 &saw_extension ($&);
4208 }
4209 }
4211 sub handle_gettext
4212 {
4213 return if ! $seen_gettext || $relative_dir ne '.';
4215 my $subdirs = var 'SUBDIRS';
4217 if (! $subdirs)
4218 {
4219 err_ac "AM_GNU_GETTEXT used but SUBDIRS not defined";
4220 return;
4221 }
4223 # Perform some sanity checks to help users get the right setup.
4224 # We disable these tests when po/ doesn't exist in order not to disallow
4225 # unusual gettext setups.
4226 #
4227 # Bruno Haible:
4228 # | The idea is:
4229 # |
4230 # | 1) If a package doesn't have a directory po/ at top level, it
4231 # | will likely have multiple po/ directories in subpackages.
4232 # |
4233 # | 2) It is useful to warn for the absence of intl/ if AM_GNU_GETTEXT
4234 # | is used without 'external'. It is also useful to warn for the
4235 # | presence of intl/ if AM_GNU_GETTEXT([external]) is used. Both
4236 # | warnings apply only to the usual layout of packages, therefore
4237 # | they should both be disabled if no po/ directory is found at
4238 # | top level.
4240 if (-d 'po')
4241 {
4242 my @subdirs = $subdirs->value_as_list_recursive;
4244 msg_var ('syntax', $subdirs,
4245 "AM_GNU_GETTEXT used but `po' not in SUBDIRS")
4246 if ! grep ($_ eq 'po', @subdirs);
4248 # intl/ is not required when AM_GNU_GETTEXT is called with the
4249 # `external' option and AM_GNU_GETTEXT_INTL_SUBDIR is not called.
4250 msg_var ('syntax', $subdirs,
4251 "AM_GNU_GETTEXT used but `intl' not in SUBDIRS")
4252 if (! ($seen_gettext_external && ! $seen_gettext_intl)
4253 && ! grep ($_ eq 'intl', @subdirs));
4255 # intl/ should not be used with AM_GNU_GETTEXT([external]), except
4256 # if AM_GNU_GETTEXT_INTL_SUBDIR is called.
4257 msg_var ('syntax', $subdirs,
4258 "`intl' should not be in SUBDIRS when "
4259 . "AM_GNU_GETTEXT([external]) is used")
4260 if ($seen_gettext_external && ! $seen_gettext_intl
4261 && grep ($_ eq 'intl', @subdirs));
4262 }
4264 require_file ($ac_gettext_location, GNU, 'ABOUT-NLS');
4265 }
4267 # Handle footer elements.
4268 sub handle_footer
4269 {
4270 reject_rule ('.SUFFIXES',
4271 "use variable `SUFFIXES', not target `.SUFFIXES'");
4273 # Note: AIX 4.1 /bin/make will fail if any suffix rule appears
4274 # before .SUFFIXES. So we make sure that .SUFFIXES appears before
4275 # anything else, by sticking it right after the default: target.
4276 $output_header .= ".SUFFIXES:\n";
4277 my $suffixes = var 'SUFFIXES';
4278 my @suffixes = Automake::Rule::suffixes;
4279 if (@suffixes || $suffixes)
4280 {
4281 # Make sure SUFFIXES has unique elements. Sort them to ensure
4282 # the output remains consistent. However, $(SUFFIXES) is
4283 # always at the start of the list, unsorted. This is done
4284 # because make will choose rules depending on the ordering of
4285 # suffixes, and this lets the user have some control. Push
4286 # actual suffixes, and not $(SUFFIXES). Some versions of make
4287 # do not like variable substitutions on the .SUFFIXES line.
4288 my @user_suffixes = ($suffixes
4289 ? $suffixes->value_as_list_recursive : ());
4291 my %suffixes = map { $_ => 1 } @suffixes;
4292 delete @suffixes{@user_suffixes};
4294 $output_header .= (".SUFFIXES: "
4295 . join (' ', @user_suffixes, sort keys %suffixes)
4296 . "\n");
4297 }
4299 $output_trailer .= file_contents ('footer', new Automake::Location);
4300 }
4303 # Generate `make install' rules.
4304 sub handle_install ()
4305 {
4306 $output_rules .= &file_contents
4307 ('install',
4308 new Automake::Location,
4309 maybe_BUILT_SOURCES => (set_seen ('BUILT_SOURCES')
4310 ? (" \$(BUILT_SOURCES)\n"
4311 . "\t\$(MAKE) \$(AM_MAKEFLAGS)")
4312 : ''),
4313 'installdirs-local' => (user_phony_rule 'installdirs-local'
4314 ? ' installdirs-local' : ''),
4315 am__installdirs => variable_value ('am__installdirs') || '');
4316 }
4319 # Deal with all and all-am.
4320 sub handle_all ($)
4321 {
4322 my ($makefile) = @_;
4324 # Output `all-am'.
4326 # Put this at the beginning for the sake of non-GNU makes. This
4327 # is still wrong if these makes can run parallel jobs. But it is
4328 # right enough.
4329 unshift (@all, basename ($makefile));
4331 foreach my $spec (@config_headers)
4332 {
4333 my ($out, @ins) = split_config_file_spec ($spec);
4334 push (@all, basename ($out))
4335 if dirname ($out) eq $relative_dir;
4336 }
4338 # Install `all' hooks.
4339 push (@all, "all-local")
4340 if user_phony_rule "all-local";
4342 &pretty_print_rule ("all-am:", "\t\t", @all);
4343 &depend ('.PHONY', 'all-am', 'all');
4346 # Output `all'.
4348 my @local_headers = ();
4349 push @local_headers, '$(BUILT_SOURCES)'
4350 if var ('BUILT_SOURCES');
4351 foreach my $spec (@config_headers)
4352 {
4353 my ($out, @ins) = split_config_file_spec ($spec);
4354 push @local_headers, basename ($out)
4355 if dirname ($out) eq $relative_dir;
4356 }
4358 if (@local_headers)
4359 {
4360 # We need to make sure config.h is built before we recurse.
4361 # We also want to make sure that built sources are built
4362 # before any ordinary `all' targets are run. We can't do this
4363 # by changing the order of dependencies to the "all" because
4364 # that breaks when using parallel makes. Instead we handle
4365 # things explicitly.
4366 $output_all .= ("all: @local_headers"
4367 . "\n\t"
4368 . '$(MAKE) $(AM_MAKEFLAGS) '
4369 . (var ('SUBDIRS') ? 'all-recursive' : 'all-am')
4370 . "\n\n");
4371 }
4372 else
4373 {
4374 $output_all .= "all: " . (var ('SUBDIRS')
4375 ? 'all-recursive' : 'all-am') . "\n\n";
4376 }
4377 }
4380 # &do_check_merge_target ()
4381 # -------------------------
4382 # Handle check merge target specially.
4383 sub do_check_merge_target ()
4384 {
4385 # Include user-defined local form of target.
4386 push @check_tests, 'check-local'
4387 if user_phony_rule 'check-local';
4389 # In --cygnus mode, check doesn't depend on all.
4390 if (option 'cygnus')
4391 {
4392 # Just run the local check rules.
4393 pretty_print_rule ('check-am:', "\t\t", @check);
4394 }
4395 else
4396 {
4397 # The check target must depend on the local equivalent of
4398 # `all', to ensure all the primary targets are built. Then it
4399 # must build the local check rules.
4400 $output_rules .= "check-am: all-am\n";
4401 pretty_print_rule ("\t\$(MAKE) \$(AM_MAKEFLAGS)", "\t ",
4402 @check)
4403 if @check;
4404 }
4405 pretty_print_rule ("\t\$(MAKE) \$(AM_MAKEFLAGS)", "\t ",
4406 @check_tests)
4407 if @check_tests;
4409 depend '.PHONY', 'check', 'check-am';
4410 # Handle recursion. We have to honor BUILT_SOURCES like for `all:'.
4411 $output_rules .= ("check: "
4412 . (var ('BUILT_SOURCES')
4413 ? "\$(BUILT_SOURCES)\n\t\$(MAKE) \$(AM_MAKEFLAGS) "
4414 : '')
4415 . (var ('SUBDIRS') ? 'check-recursive' : 'check-am')
4416 . "\n");
4417 }
4419 # handle_clean ($MAKEFILE)
4420 # ------------------------
4421 # Handle all 'clean' targets.
4422 sub handle_clean ($)
4423 {
4424 my ($makefile) = @_;
4426 # Clean the files listed in user variables if they exist.
4427 $clean_files{'$(MOSTLYCLEANFILES)'} = MOSTLY_CLEAN
4428 if var ('MOSTLYCLEANFILES');
4429 $clean_files{'$(CLEANFILES)'} = CLEAN
4430 if var ('CLEANFILES');
4431 $clean_files{'$(DISTCLEANFILES)'} = DIST_CLEAN
4432 if var ('DISTCLEANFILES');
4433 $clean_files{'$(MAINTAINERCLEANFILES)'} = MAINTAINER_CLEAN
4434 if var ('MAINTAINERCLEANFILES');
4436 # Built sources are automatically removed by maintainer-clean.
4437 $clean_files{'$(BUILT_SOURCES)'} = MAINTAINER_CLEAN
4438 if var ('BUILT_SOURCES');
4440 # Compute a list of "rm"s to run for each target.
4441 my %rms = (MOSTLY_CLEAN, [],
4442 CLEAN, [],
4443 DIST_CLEAN, [],
4444 MAINTAINER_CLEAN, []);
4446 foreach my $file (keys %clean_files)
4447 {
4448 my $when = $clean_files{$file};
4449 prog_error 'invalid entry in %clean_files'
4450 unless exists $rms{$when};
4452 my $rm = "rm -f $file";
4453 # If file is a variable, make sure when don't call `rm -f' without args.
4454 $rm ="test -z \"$file\" || $rm"
4455 if ($file =~ /^\s*\$(\(.*\)|\{.*\})\s*$/);
4457 push @{$rms{$when}}, "\t-$rm\n";
4458 }
4460 $output_rules .= &file_contents
4461 ('clean',
4462 new Automake::Location,
4463 MOSTLYCLEAN_RMS => join ('', sort @{$rms{&MOSTLY_CLEAN}}),
4464 CLEAN_RMS => join ('', sort @{$rms{&CLEAN}}),
4465 DISTCLEAN_RMS => join ('', sort @{$rms{&DIST_CLEAN}}),
4466 MAINTAINER_CLEAN_RMS => join ('', sort @{$rms{&MAINTAINER_CLEAN}}),
4467 MAKEFILE => basename $makefile,
4468 );
4469 }
4472 # &target_cmp ($A, $B)
4473 # --------------------
4474 # Subroutine for &handle_factored_dependencies to let `.PHONY' and
4475 # other `.TARGETS' be last.
4476 sub target_cmp
4477 {
4478 return 0 if $a eq $b;
4480 my $a1 = substr ($a, 0, 1);
4481 my $b1 = substr ($b, 0, 1);
4482 if ($a1 ne $b1)
4483 {
4484 return -1 if $b1 eq '.';
4485 return 1 if $a1 eq '.';
4486 }
4487 return $a cmp $b;
4488 }
4491 # &handle_factored_dependencies ()
4492 # --------------------------------
4493 # Handle everything related to gathered targets.
4494 sub handle_factored_dependencies
4495 {
4496 # Reject bad hooks.
4497 foreach my $utarg ('uninstall-data-local', 'uninstall-data-hook',
4498 'uninstall-exec-local', 'uninstall-exec-hook',
4499 'uninstall-dvi-local',
4500 'uninstall-html-local',
4501 'uninstall-info-local',
4502 'uninstall-pdf-local',
4503 'uninstall-ps-local')
4504 {
4505 my $x = $utarg;
4506 $x =~ s/-.*-/-/;
4507 reject_rule ($utarg, "use `$x', not `$utarg'");
4508 }
4510 reject_rule ('install-local',
4511 "use `install-data-local' or `install-exec-local', "
4512 . "not `install-local'");
4514 reject_rule ('install-hook',
4515 "use `install-data-hook' or `install-exec-hook', "
4516 . "not `install-hook'");
4518 # Install the -local hooks.
4519 foreach (keys %dependencies)
4520 {
4521 # Hooks are installed on the -am targets.
4522 s/-am$// or next;
4523 depend ("$_-am", "$_-local")
4524 if user_phony_rule "$_-local";
4525 }
4527 # Install the -hook hooks.
4528 # FIXME: Why not be as liberal as we are with -local hooks?
4529 foreach ('install-exec', 'install-data', 'uninstall')
4530 {
4531 if (user_phony_rule "$_-hook")
4532 {
4533 depend ('.MAKE', "$_-am");
4534 register_action("$_-am",
4535 ("\t\@\$(NORMAL_INSTALL)\n"
4536 . "\t\$(MAKE) \$(AM_MAKEFLAGS) $_-hook"));
4537 }
4538 }
4540 # All the required targets are phony.
4541 depend ('.PHONY', keys %required_targets);
4543 # Actually output gathered targets.
4544 foreach (sort target_cmp keys %dependencies)
4545 {
4546 # If there is nothing about this guy, skip it.
4547 next
4548 unless (@{$dependencies{$_}}
4549 || $actions{$_}
4550 || $required_targets{$_});
4552 # Define gathered targets in undefined conditions.
4553 # FIXME: Right now we must handle .PHONY as an exception,
4554 # because people write things like
4555 # .PHONY: myphonytarget
4556 # to append dependencies. This would not work if Automake
4557 # refrained from defining its own .PHONY target as it does
4558 # with other overridden targets.
4559 # Likewise for `.MAKE'.
4560 my @undefined_conds = (TRUE,);
4561 if ($_ ne '.PHONY' && $_ ne '.MAKE')
4562 {
4563 @undefined_conds =
4564 Automake::Rule::define ($_, 'internal',
4565 RULE_AUTOMAKE, TRUE, INTERNAL);
4566 }
4567 my @uniq_deps = uniq (sort @{$dependencies{$_}});
4568 foreach my $cond (@undefined_conds)
4569 {
4570 my $condstr = $cond->subst_string;
4571 &pretty_print_rule ("$condstr$_:", "$condstr\t", @uniq_deps);
4572 $output_rules .= $actions{$_} if defined $actions{$_};
4573 $output_rules .= "\n";
4574 }
4575 }
4576 }
4579 # &handle_tests_dejagnu ()
4580 # ------------------------
4581 sub handle_tests_dejagnu
4582 {
4583 push (@check_tests, 'check-DEJAGNU');
4584 $output_rules .= file_contents ('dejagnu', new Automake::Location);
4585 }
4588 # Handle TESTS variable and other checks.
4589 sub handle_tests
4590 {
4591 if (option 'dejagnu')
4592 {
4593 &handle_tests_dejagnu;
4594 }
4595 else
4596 {
4597 foreach my $c ('DEJATOOL', 'RUNTEST', 'RUNTESTFLAGS')
4598 {
4599 reject_var ($c, "`$c' defined but `dejagnu' not in "
4600 . "`AUTOMAKE_OPTIONS'");
4601 }
4602 }
4604 if (var ('TESTS'))
4605 {
4606 push (@check_tests, 'check-TESTS');
4607 $output_rules .= &file_contents ('check', new Automake::Location,
4608 COLOR => !! option 'color-tests');
4610 # Tests that are known programs should have $(EXEEXT) appended.
4611 # For matching purposes, we need to adjust XFAIL_TESTS as well.
4612 append_exeext { exists $known_programs{$_[0]} } 'TESTS';
4613 append_exeext { exists $known_programs{$_[0]} } 'XFAIL_TESTS'
4614 if (var ('XFAIL_TESTS'));
4615 }
4616 }
4618 # Handle Emacs Lisp.
4619 sub handle_emacs_lisp
4620 {
4621 my @elfiles = &am_install_var ('-candist', 'lisp', 'LISP',
4622 'lisp', 'noinst');
4624 return if ! @elfiles;
4626 define_pretty_variable ('am__ELFILES', TRUE, INTERNAL,
4627 map { $_->[1] } @elfiles);
4628 define_pretty_variable ('am__ELCFILES', TRUE, INTERNAL,
4629 '$(am__ELFILES:.el=.elc)');
4630 # This one can be overridden by users.
4631 define_pretty_variable ('ELCFILES', TRUE, INTERNAL, '$(LISP:.el=.elc)');
4633 push @all, '$(ELCFILES)';
4635 require_variables ($elfiles[0][0], "Emacs Lisp sources seen", TRUE,
4636 'EMACS', 'lispdir');
4637 require_conf_file ($elfiles[0][0], FOREIGN, 'elisp-comp');
4638 &define_variable ('elisp_comp', "$am_config_aux_dir/elisp-comp", INTERNAL);
4639 }
4641 # Handle Python
4642 sub handle_python
4643 {
4644 my @pyfiles = &am_install_var ('-defaultdist', 'python', 'PYTHON',
4645 'noinst');
4646 return if ! @pyfiles;
4648 require_variables ($pyfiles[0][0], "Python sources seen", TRUE, 'PYTHON');
4649 require_conf_file ($pyfiles[0][0], FOREIGN, 'py-compile');
4650 &define_variable ('py_compile', "$am_config_aux_dir/py-compile", INTERNAL);
4651 }
4653 # Handle Java.
4654 sub handle_java
4655 {
4656 my @sourcelist = &am_install_var ('-candist',
4657 'java', 'JAVA',
4658 'java', 'noinst', 'check');
4659 return if ! @sourcelist;
4661 my @prefix = am_primary_prefixes ('JAVA', 1,
4662 'java', 'noinst', 'check');
4664 my $dir;
4665 foreach my $curs (@prefix)
4666 {
4667 next
4668 if $curs eq 'EXTRA';
4670 err_var "${curs}_JAVA", "multiple _JAVA primaries in use"
4671 if defined $dir;
4672 $dir = $curs;
4673 }
4676 push (@all, 'class' . $dir . '.stamp');
4677 }
4680 # Handle some of the minor options.
4681 sub handle_minor_options
4682 {
4683 if (option 'readme-alpha')
4684 {
4685 if ($relative_dir eq '.')
4686 {
4687 if ($package_version !~ /^$GNITS_VERSION_PATTERN$/)
4688 {
4689 msg ('error-gnits', $package_version_location,
4690 "version `$package_version' doesn't follow " .
4691 "Gnits standards");
4692 }
4693 if (defined $1 && -f 'README-alpha')
4694 {
4695 # This means we have an alpha release. See
4696 # GNITS_VERSION_PATTERN for details.
4697 push_dist_common ('README-alpha');
4698 }
4699 }
4700 }
4701 }
4703 ################################################################
4705 # ($OUTPUT, @INPUTS)
4706 # &split_config_file_spec ($SPEC)
4707 # -------------------------------
4708 # Decode the Autoconf syntax for config files (files, headers, links
4709 # etc.).
4710 sub split_config_file_spec ($)
4711 {
4712 my ($spec) = @_;
4713 my ($output, @inputs) = split (/:/, $spec);
4715 push @inputs, "$output.in"
4716 unless @inputs;
4718 return ($output, @inputs);
4719 }
4721 # $input
4722 # locate_am (@POSSIBLE_SOURCES)
4723 # -----------------------------
4724 # AC_CONFIG_FILES allow specifications such as Makefile:top.in:mid.in:bot.in
4725 # This functions returns the first *.in file for which a *.am exists.
4726 # It returns undef otherwise.
4727 sub locate_am (@)
4728 {
4729 my (@rest) = @_;
4730 my $input;
4731 foreach my $file (@rest)
4732 {
4733 if (($file =~ /^(.*)\.in$/) && -f "$1.am")
4734 {
4735 $input = $file;
4736 last;
4737 }
4738 }
4739 return $input;
4740 }
4742 my %make_list;
4744 # &scan_autoconf_config_files ($WHERE, $CONFIG-FILES)
4745 # ---------------------------------------------------
4746 # Study $CONFIG-FILES which is the first argument to AC_CONFIG_FILES
4747 # (or AC_OUTPUT).
4748 sub scan_autoconf_config_files ($$)
4749 {
4750 my ($where, $config_files) = @_;
4752 # Look at potential Makefile.am's.
4753 foreach (split ' ', $config_files)
4754 {
4755 # Must skip empty string for Perl 4.
4756 next if $_ eq "\\" || $_ eq '';
4758 # Handle $local:$input syntax.
4759 my ($local, @rest) = split (/:/);
4760 @rest = ("$local.in",) unless @rest;
4761 msg ('portability', $where,
4762 "Omit leading `./' from config file names such as `$local',"
4763 . "\nas not all make implementations treat `file' and `./file' equally.")
4764 if ($local =~ /^\.\//);
4765 my $input = locate_am @rest;
4766 if ($input)
4767 {
4768 # We have a file that automake should generate.
4769 $make_list{$input} = join (':', ($local, @rest));
4770 }
4771 else
4772 {
4773 # We have a file that automake should cause to be
4774 # rebuilt, but shouldn't generate itself.
4775 push (@other_input_files, $_);
4776 }
4777 $ac_config_files_location{$local} = $where;
4778 }
4779 }
4782 # &scan_autoconf_traces ($FILENAME)
4783 # ---------------------------------
4784 sub scan_autoconf_traces ($)
4785 {
4786 my ($filename) = @_;
4788 # Macros to trace, with their minimal number of arguments.
4789 #
4790 # IMPORTANT: If you add a macro here, you should also add this macro
4791 # ========= to Automake-preselection in autoconf/lib/autom4te.in.
4792 my %traced = (
4793 AC_CANONICAL_BUILD => 0,
4794 AC_CANONICAL_HOST => 0,
4795 AC_CANONICAL_TARGET => 0,
4796 AC_CONFIG_AUX_DIR => 1,
4797 AC_CONFIG_FILES => 1,
4798 AC_CONFIG_HEADERS => 1,
4799 AC_CONFIG_LIBOBJ_DIR => 1,
4800 AC_CONFIG_LINKS => 1,
4801 AC_FC_SRCEXT => 1,
4802 AC_INIT => 0,
4803 AC_LIBSOURCE => 1,
4804 AC_REQUIRE_AUX_FILE => 1,
4805 AC_SUBST_TRACE => 1,
4806 AM_AUTOMAKE_VERSION => 1,
4807 AM_CONDITIONAL => 2,
4808 AM_ENABLE_MULTILIB => 0,
4809 AM_GNU_GETTEXT => 0,
4810 AM_GNU_GETTEXT_INTL_SUBDIR => 0,
4811 AM_INIT_AUTOMAKE => 0,
4812 AM_MAINTAINER_MODE => 0,
4813 AM_PROG_CC_C_O => 0,
4814 _AM_SUBST_NOTMAKE => 1,
4815 LT_SUPPORTED_TAG => 1,
4816 _LT_AC_TAGCONFIG => 0,
4817 m4_include => 1,
4818 m4_sinclude => 1,
4819 sinclude => 1,
4820 );
4822 my $traces = ($ENV{AUTOCONF} || 'autoconf') . " ";
4824 # Use a separator unlikely to be used, not `:', the default, which
4825 # has a precise meaning for AC_CONFIG_FILES and so on.
4826 $traces .= join (' ',
4827 map { "--trace=$_" . ':\$f:\$l::\$n::\${::}%' }
4828 (keys %traced));
4830 my $tracefh = new Automake::XFile ("$traces $filename |");
4831 verb "reading $traces";
4833 while ($_ = $tracefh->getline)
4834 {
4835 chomp;
4836 my ($here, @args) = split (/::/);
4837 my $where = new Automake::Location $here;
4838 my $macro = $args[0];
4840 prog_error ("unrequested trace `$macro'")
4841 unless exists $traced{$macro};
4843 # Skip and diagnose malformed calls.
4844 if ($#args < $traced{$macro})
4845 {
4846 msg ('syntax', $where, "not enough arguments for $macro");
4847 next;
4848 }
4850 # Alphabetical ordering please.
4851 if ($macro eq 'AC_CANONICAL_BUILD')
4852 {
4853 if ($seen_canonical <= AC_CANONICAL_BUILD)
4854 {
4855 $seen_canonical = AC_CANONICAL_BUILD;
4856 $canonical_location = $where;
4857 }
4858 }
4859 elsif ($macro eq 'AC_CANONICAL_HOST')
4860 {
4861 if ($seen_canonical <= AC_CANONICAL_HOST)
4862 {
4863 $seen_canonical = AC_CANONICAL_HOST;
4864 $canonical_location = $where;
4865 }
4866 }
4867 elsif ($macro eq 'AC_CANONICAL_TARGET')
4868 {
4869 $seen_canonical = AC_CANONICAL_TARGET;
4870 $canonical_location = $where;
4871 }
4872 elsif ($macro eq 'AC_CONFIG_AUX_DIR')
4873 {
4874 if ($seen_init_automake)
4875 {
4876 error ($where, "AC_CONFIG_AUX_DIR must be called before "
4877 . "AM_INIT_AUTOMAKE...", partial => 1);
4878 error ($seen_init_automake, "... AM_INIT_AUTOMAKE called here");
4879 }
4880 $config_aux_dir = $args[1];
4881 $config_aux_dir_set_in_configure_ac = 1;
4882 $relative_dir = '.';
4883 check_directory ($config_aux_dir, $where);
4884 }
4885 elsif ($macro eq 'AC_CONFIG_FILES')
4886 {
4887 # Look at potential Makefile.am's.
4888 scan_autoconf_config_files ($where, $args[1]);
4889 }
4890 elsif ($macro eq 'AC_CONFIG_HEADERS')
4891 {
4892 foreach my $spec (split (' ', $args[1]))
4893 {
4894 my ($dest, @src) = split (':', $spec);
4895 $ac_config_files_location{$dest} = $where;
4896 push @config_headers, $spec;
4897 }
4898 }
4899 elsif ($macro eq 'AC_CONFIG_LIBOBJ_DIR')
4900 {
4901 $config_libobj_dir = $args[1];
4902 $relative_dir = '.';
4903 check_directory ($config_libobj_dir, $where);
4904 }
4905 elsif ($macro eq 'AC_CONFIG_LINKS')
4906 {
4907 foreach my $spec (split (' ', $args[1]))
4908 {
4909 my ($dest, $src) = split (':', $spec);
4910 $ac_config_files_location{$dest} = $where;
4911 push @config_links, $spec;
4912 }
4913 }
4914 elsif ($macro eq 'AC_FC_SRCEXT')
4915 {
4916 my $suffix = $args[1];
4917 # These flags are used as %SOURCEFLAG% in depend2.am,
4918 # where the trailing space is important.
4919 $sourceflags{'.' . $suffix} = '$(FCFLAGS_' . $suffix . ') '
4920 if ($suffix eq 'f90' || $suffix eq 'f95');
4921 }
4922 elsif ($macro eq 'AC_INIT')
4923 {
4924 if (defined $args[2])
4925 {
4926 $package_version = $args[2];
4927 $package_version_location = $where;
4928 }
4929 }
4930 elsif ($macro eq 'AC_LIBSOURCE')
4931 {
4932 $libsources{$args[1]} = $here;
4933 }
4934 elsif ($macro eq 'AC_REQUIRE_AUX_FILE')
4935 {
4936 # Only remember the first time a file is required.
4937 $required_aux_file{$args[1]} = $where
4938 unless exists $required_aux_file{$args[1]};
4939 }
4940 elsif ($macro eq 'AC_SUBST_TRACE')
4941 {
4942 # Just check for alphanumeric in AC_SUBST_TRACE. If you do
4943 # AC_SUBST(5), then too bad.
4944 $configure_vars{$args[1]} = $where
4945 if $args[1] =~ /^\w+$/;
4946 }
4947 elsif ($macro eq 'AM_AUTOMAKE_VERSION')
4948 {
4949 error ($where,
4950 "version mismatch. This is Automake $VERSION,\n" .
4951 "but the definition used by this AM_INIT_AUTOMAKE\n" .
4952 "comes from Automake $args[1]. You should recreate\n" .
4953 "aclocal.m4 with aclocal and run automake again.\n",
4954 # $? = 63 is used to indicate version mismatch to missing.
4955 exit_code => 63)
4956 if $VERSION ne $args[1];
4958 $seen_automake_version = 1;
4959 }
4960 elsif ($macro eq 'AM_CONDITIONAL')
4961 {
4962 $configure_cond{$args[1]} = $where;
4963 }
4964 elsif ($macro eq 'AM_ENABLE_MULTILIB')
4965 {
4966 $seen_multilib = $where;
4967 }
4968 elsif ($macro eq 'AM_GNU_GETTEXT')
4969 {
4970 $seen_gettext = $where;
4971 $ac_gettext_location = $where;
4972 $seen_gettext_external = grep ($_ eq 'external', @args);
4973 }
4974 elsif ($macro eq 'AM_GNU_GETTEXT_INTL_SUBDIR')
4975 {
4976 $seen_gettext_intl = $where;
4977 }
4978 elsif ($macro eq 'AM_INIT_AUTOMAKE')
4979 {
4980 $seen_init_automake = $where;
4981 if (defined $args[2])
4982 {
4983 $package_version = $args[2];
4984 $package_version_location = $where;
4985 }
4986 elsif (defined $args[1])
4987 {
4988 exit $exit_code
4989 if (process_global_option_list ($where,
4990 split (' ', $args[1])));
4991 }
4992 }
4993 elsif ($macro eq 'AM_MAINTAINER_MODE')
4994 {
4995 $seen_maint_mode = $where;
4996 }
4997 elsif ($macro eq 'AM_PROG_CC_C_O')
4998 {
4999 $seen_cc_c_o = $where;
5000 }
5001 elsif ($macro eq '_AM_SUBST_NOTMAKE')
5002 {
5003 $ignored_configure_vars{$args[1]} = $where;
5004 }
5005 elsif ($macro eq 'm4_include'
5006 || $macro eq 'm4_sinclude'
5007 || $macro eq 'sinclude')
5008 {
5009 # Skip missing `sinclude'd files.
5010 next if $macro ne 'm4_include' && ! -f $args[1];
5012 # Some modified versions of Autoconf don't use
5013 # frozen files. Consequently it's possible that we see all
5014 # m4_include's performed during Autoconf's startup.
5015 # Obviously we don't want to distribute Autoconf's files
5016 # so we skip absolute filenames here.
5017 push @configure_deps, '$(top_srcdir)/' . $args[1]
5018 unless $here =~ m,^(?:\w:)?[\\/],;
5019 # Keep track of the greatest timestamp.
5020 if (-e $args[1])
5021 {
5022 my $mtime = mtime $args[1];
5023 $configure_deps_greatest_timestamp = $mtime
5024 if $mtime > $configure_deps_greatest_timestamp;
5025 }
5026 }
5027 elsif ($macro eq 'LT_SUPPORTED_TAG')
5028 {
5029 $libtool_tags{$args[1]} = 1;
5030 $libtool_new_api = 1;
5031 }
5032 elsif ($macro eq '_LT_AC_TAGCONFIG')
5033 {
5034 # _LT_AC_TAGCONFIG is an old macro present in Libtool 1.5.
5035 # We use it to detect whether tags are supported. Our
5036 # preferred interface is LT_SUPPORTED_TAG, but it was
5037 # introduced in Libtool 1.6.
5038 if (0 == keys %libtool_tags)
5039 {
5040 # Hardcode the tags supported by Libtool 1.5.
5041 %libtool_tags = (CC => 1, CXX => 1, GCJ => 1, F77 => 1);
5042 }
5043 }
5044 }
5046 $tracefh->close;
5047 }
5050 # &scan_autoconf_files ()
5051 # -----------------------
5052 # Check whether we use `configure.ac' or `configure.in'.
5053 # Scan it (and possibly `aclocal.m4') for interesting things.
5054 # We must scan aclocal.m4 because there might be AC_SUBSTs and such there.
5055 sub scan_autoconf_files ()
5056 {
5057 # Reinitialize libsources here. This isn't really necessary,
5058 # since we currently assume there is only one configure.ac. But
5059 # that won't always be the case.
5060 %libsources = ();
5062 # Keep track of the youngest configure dependency.
5063 $configure_deps_greatest_timestamp = mtime $configure_ac;
5064 if (-e 'aclocal.m4')
5065 {
5066 my $mtime = mtime 'aclocal.m4';
5067 $configure_deps_greatest_timestamp = $mtime
5068 if $mtime > $configure_deps_greatest_timestamp;
5069 }
5071 scan_autoconf_traces ($configure_ac);
5073 @configure_input_files = sort keys %make_list;
5074 # Set input and output files if not specified by user.
5075 if (! @input_files)
5076 {
5077 @input_files = @configure_input_files;
5078 %output_files = %make_list;
5079 }
5082 if (! $seen_init_automake)
5083 {
5084 err_ac ("no proper invocation of AM_INIT_AUTOMAKE was found.\nYou "
5085 . "should verify that $configure_ac invokes AM_INIT_AUTOMAKE,"
5086 . "\nthat aclocal.m4 is present in the top-level directory,\n"
5087 . "and that aclocal.m4 was recently regenerated "
5088 . "(using aclocal).");
5089 }
5090 else
5091 {
5092 if (! $seen_automake_version)
5093 {
5094 if (-f 'aclocal.m4')
5095 {
5096 error ($seen_init_automake,
5097 "your implementation of AM_INIT_AUTOMAKE comes from " .
5098 "an\nold Automake version. You should recreate " .
5099 "aclocal.m4\nwith aclocal and run automake again.\n",
5100 # $? = 63 is used to indicate version mismatch to missing.
5101 exit_code => 63);
5102 }
5103 else
5104 {
5105 error ($seen_init_automake,
5106 "no proper implementation of AM_INIT_AUTOMAKE was " .
5107 "found,\nprobably because aclocal.m4 is missing...\n" .
5108 "You should run aclocal to create this file, then\n" .
5109 "run automake again.\n");
5110 }
5111 }
5112 }
5114 locate_aux_dir ();
5116 # Reorder @input_files so that the Makefile that distributes aux
5117 # files is processed last. This is important because each directory
5118 # can require auxiliary scripts and we should wait until they have
5119 # been installed before distributing them.
5121 # The Makefile.in that distribute the aux files is the one in
5122 # $config_aux_dir or the top-level Makefile.
5123 my $auxdirdist = is_make_dir ($config_aux_dir) ? $config_aux_dir : '.';
5124 my @new_input_files = ();
5125 while (@input_files)
5126 {
5127 my $in = pop @input_files;
5128 my @ins = split (/:/, $output_files{$in});
5129 if (dirname ($ins[0]) eq $auxdirdist)
5130 {
5131 push @new_input_files, $in;
5132 $automake_will_process_aux_dir = 1;
5133 }
5134 else
5135 {
5136 unshift @new_input_files, $in;
5137 }
5138 }
5139 @input_files = @new_input_files;
5141 # If neither the auxdir/Makefile nor the ./Makefile are generated
5142 # by Automake, we won't distribute the aux files anyway. Assume
5143 # the user know what (s)he does, and pretend we will distribute
5144 # them to disable the error in require_file_internal.
5145 $automake_will_process_aux_dir = 1 if ! is_make_dir ($auxdirdist);
5147 # Look for some files we need. Always check for these. This
5148 # check must be done for every run, even those where we are only
5149 # looking at a subdir Makefile. We must set relative_dir for
5150 # maybe_push_required_file to work.
5151 $relative_dir = '.';
5152 foreach my $file (keys %required_aux_file)
5153 {
5154 require_conf_file ($required_aux_file{$file}->get, FOREIGN, $file)
5155 }
5156 err_am "`install.sh' is an anachronism; use `install-sh' instead"
5157 if -f $config_aux_dir . '/install.sh';
5159 # Preserve dist_common for later.
5160 $configure_dist_common = variable_value ('DIST_COMMON') || '';
5162 }
5164 ################################################################
5166 # Set up for Cygnus mode.
5167 sub check_cygnus
5168 {
5169 my $cygnus = option 'cygnus';
5170 return unless $cygnus;
5172 set_strictness ('foreign');
5173 set_option ('no-installinfo', $cygnus);
5174 set_option ('no-dependencies', $cygnus);
5175 set_option ('no-dist', $cygnus);
5177 err_ac "`AM_MAINTAINER_MODE' required when --cygnus specified"
5178 if !$seen_maint_mode;
5179 }
5181 # Do any extra checking for GNU standards.
5182 sub check_gnu_standards
5183 {
5184 if ($relative_dir eq '.')
5185 {
5186 # In top level (or only) directory.
5187 require_file ("$am_file.am", GNU,
5188 qw/INSTALL NEWS README AUTHORS ChangeLog/);
5190 # Accept one of these three licenses; default to COPYING.
5191 # Make sure we do not overwrite an existing license.
5192 my $license;
5193 foreach (qw /COPYING COPYING.LIB COPYING.LESSER/)
5194 {
5195 if (-f $_)
5196 {
5197 $license = $_;
5198 last;
5199 }
5200 }
5201 require_file ("$am_file.am", GNU, 'COPYING')
5202 unless $license;
5203 }
5205 for my $opt ('no-installman', 'no-installinfo')
5206 {
5207 msg ('error-gnu', option $opt,
5208 "option `$opt' disallowed by GNU standards")
5209 if option $opt;
5210 }
5211 }
5213 # Do any extra checking for GNITS standards.
5214 sub check_gnits_standards
5215 {
5216 if ($relative_dir eq '.')
5217 {
5218 # In top level (or only) directory.
5219 require_file ("$am_file.am", GNITS, 'THANKS');
5220 }
5221 }
5223 ################################################################
5224 #
5225 # Functions to handle files of each language.
5227 # Each `lang_X_rewrite($DIRECTORY, $BASE, $EXT)' function follows a
5228 # simple formula: Return value is LANG_SUBDIR if the resulting object
5229 # file should be in a subdir if the source file is, LANG_PROCESS if
5230 # file is to be dealt with, LANG_IGNORE otherwise.
5232 # Much of the actual processing is handled in
5233 # handle_single_transform. These functions exist so that
5234 # auxiliary information can be recorded for a later cleanup pass.
5235 # Note that the calls to these functions are computed, so don't bother
5236 # searching for their precise names in the source.
5238 # This is just a convenience function that can be used to determine
5239 # when a subdir object should be used.
5240 sub lang_sub_obj
5241 {
5242 return option 'subdir-objects' ? LANG_SUBDIR : LANG_PROCESS;
5243 }
5245 # Rewrite a single C source file.
5246 sub lang_c_rewrite
5247 {
5248 my ($directory, $base, $ext, $nonansi_obj, $have_per_exec_flags, $var) = @_;
5250 if (option 'ansi2knr' && $base =~ /_$/)
5251 {
5252 # FIXME: include line number in error.
5253 err_am "C source file `$base.c' would be deleted by ansi2knr rules";
5254 }
5256 my $r = LANG_PROCESS;
5257 if (option 'subdir-objects')
5258 {
5259 $r = LANG_SUBDIR;
5260 if ($directory && $directory ne '.')
5261 {
5262 $base = $directory . '/' . $base;
5264 # libtool is always able to put the object at the proper place,
5265 # so we do not have to require AM_PROG_CC_C_O when building .lo files.
5266 msg_var ('portability', $var,
5267 "compiling `$base.c' in subdir requires "
5268 . "`AM_PROG_CC_C_O' in `$configure_ac'",
5269 uniq_scope => US_GLOBAL,
5270 uniq_part => 'AM_PROG_CC_C_O subdir')
5271 unless $seen_cc_c_o || $nonansi_obj eq '.lo';
5272 }
5274 # In this case we already have the directory information, so
5275 # don't add it again.
5276 $de_ansi_files{$base} = '';
5277 }
5278 else
5279 {
5280 $de_ansi_files{$base} = (($directory eq '.' || $directory eq '')
5281 ? ''
5282 : "$directory/");
5283 }
5285 if (! $seen_cc_c_o
5286 && $have_per_exec_flags
5287 && ! option 'subdir-objects'
5288 && $nonansi_obj ne '.lo')
5289 {
5290 msg_var ('portability',
5291 $var, "compiling `$base.c' with per-target flags requires "
5292 . "`AM_PROG_CC_C_O' in `$configure_ac'",
5293 uniq_scope => US_GLOBAL,
5294 uniq_part => 'AM_PROG_CC_C_O per-target')
5295 }
5297 return $r;
5298 }
5300 # Rewrite a single C++ source file.
5301 sub lang_cxx_rewrite
5302 {
5303 return &lang_sub_obj;
5304 }
5306 # Rewrite a single header file.
5307 sub lang_header_rewrite
5308 {
5309 # Header files are simply ignored.
5310 return LANG_IGNORE;
5311 }
5313 # Rewrite a single yacc file.
5314 sub lang_yacc_rewrite
5315 {
5316 my ($directory, $base, $ext) = @_;
5318 my $r = &lang_sub_obj;
5319 (my $newext = $ext) =~ tr/y/c/;
5320 return ($r, $newext);
5321 }
5323 # Rewrite a single yacc++ file.
5324 sub lang_yaccxx_rewrite
5325 {
5326 my ($directory, $base, $ext) = @_;
5328 my $r = &lang_sub_obj;
5329 (my $newext = $ext) =~ tr/y/c/;
5330 return ($r, $newext);
5331 }
5333 # Rewrite a single lex file.
5334 sub lang_lex_rewrite
5335 {
5336 my ($directory, $base, $ext) = @_;
5338 my $r = &lang_sub_obj;
5339 (my $newext = $ext) =~ tr/l/c/;
5340 return ($r, $newext);
5341 }
5343 # Rewrite a single lex++ file.
5344 sub lang_lexxx_rewrite
5345 {
5346 my ($directory, $base, $ext) = @_;
5348 my $r = &lang_sub_obj;
5349 (my $newext = $ext) =~ tr/l/c/;
5350 return ($r, $newext);
5351 }
5353 # Rewrite a single assembly file.
5354 sub lang_asm_rewrite
5355 {
5356 return &lang_sub_obj;
5357 }
5359 # Rewrite a single preprocessed assembly file.
5360 sub lang_cppasm_rewrite
5361 {
5362 return &lang_sub_obj;
5363 }
5365 # Rewrite a single Fortran 77 file.
5366 sub lang_f77_rewrite
5367 {
5368 return &lang_sub_obj;
5369 }
5371 # Rewrite a single Fortran file.
5372 sub lang_fc_rewrite
5373 {
5374 return &lang_sub_obj;
5375 }
5377 # Rewrite a single preprocessed Fortran file.
5378 sub lang_ppfc_rewrite
5379 {
5380 return &lang_sub_obj;
5381 }
5383 # Rewrite a single preprocessed Fortran 77 file.
5384 sub lang_ppf77_rewrite
5385 {
5386 return &lang_sub_obj;
5387 }
5389 # Rewrite a single ratfor file.
5390 sub lang_ratfor_rewrite
5391 {
5392 return &lang_sub_obj;
5393 }
5395 # Rewrite a single Objective C file.
5396 sub lang_objc_rewrite
5397 {
5398 return &lang_sub_obj;
5399 }
5401 # Rewrite a single Unified Parallel C file.
5402 sub lang_upc_rewrite
5403 {
5404 return &lang_sub_obj;
5405 }
5407 # Rewrite a single Java file.
5408 sub lang_java_rewrite
5409 {
5410 return LANG_SUBDIR;
5411 }
5413 # The lang_X_finish functions are called after all source file
5414 # processing is done. Each should handle defining rules for the
5415 # language, etc. A finish function is only called if a source file of
5416 # the appropriate type has been seen.
5418 sub lang_c_finish
5419 {
5420 # Push all libobjs files onto de_ansi_files. We actually only
5421 # push files which exist in the current directory, and which are
5422 # genuine source files.
5423 foreach my $file (keys %libsources)
5424 {
5425 if ($file =~ /^(.*)\.[cly]$/ && -f "$relative_dir/$file")
5426 {
5427 $de_ansi_files{$1} = ''
5428 }
5429 }
5431 if (option 'ansi2knr' && keys %de_ansi_files)
5432 {
5433 # Make all _.c files depend on their corresponding .c files.
5434 my @objects;
5435 foreach my $base (sort keys %de_ansi_files)
5436 {
5437 # Each _.c file must depend on ansi2knr; otherwise it
5438 # might be used in a parallel build before it is built.
5439 # We need to support files in the srcdir and in the build
5440 # dir (because these files might be auto-generated. But
5441 # we can't use $< -- some makes only define $< during a
5442 # suffix rule.
5443 my $ansfile = $de_ansi_files{$base} . $base . '.c';
5444 $output_rules .= ($base . "_.c: $ansfile \$(ANSI2KNR)\n\t"
5445 . '$(CPP) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS) $(CPPFLAGS) '
5446 . '`if test -f $(srcdir)/' . $ansfile
5447 . '; then echo $(srcdir)/' . $ansfile
5448 . '; else echo ' . $ansfile . '; fi` '
5449 . "| sed 's/^# \\([0-9]\\)/#line \\1/' "
5450 . '| $(ANSI2KNR) > $@'
5451 # If ansi2knr fails then we shouldn't
5452 # create the _.c file
5453 . " || rm -f \$\@\n");
5454 push (@objects, $base . '_.$(OBJEXT)');
5455 push (@objects, $base . '_.lo')
5456 if var ('LIBTOOL');
5458 # Explicitly clean the _.c files if they are in a
5459 # subdirectory. (In the current directory they get erased
5460 # by a `rm -f *_.c' rule.)
5461 $clean_files{$base . '_.c'} = MOSTLY_CLEAN
5462 if dirname ($base) ne '.';
5463 }
5465 # Make all _.o (and _.lo) files depend on ansi2knr.
5466 # Use a sneaky little hack to make it print nicely.
5467 &pretty_print_rule ('', '', @objects, ':', '$(ANSI2KNR)');
5468 }
5469 }
5471 # This is a yacc helper which is called whenever we have decided to
5472 # compile a yacc file.
5473 sub lang_yacc_target_hook
5474 {
5475 my ($self, $aggregate, $output, $input, %transform) = @_;
5477 my $flag = $aggregate . "_YFLAGS";
5478 my $flagvar = var $flag;
5479 my $YFLAGSvar = var 'YFLAGS';
5480 if (($flagvar && $flagvar->variable_value =~ /$DASH_D_PATTERN/o)
5481 || ($YFLAGSvar && $YFLAGSvar->variable_value =~ /$DASH_D_PATTERN/o))
5482 {
5483 (my $output_base = $output) =~ s/$KNOWN_EXTENSIONS_PATTERN$//;
5484 my $header = $output_base . '.h';
5486 # Found a `-d' that applies to the compilation of this file.
5487 # Add a dependency for the generated header file, and arrange
5488 # for that file to be included in the distribution.
5489 foreach my $cond (Automake::Rule::define (${header}, 'internal',
5490 RULE_AUTOMAKE, TRUE,
5491 INTERNAL))
5492 {
5493 my $condstr = $cond->subst_string;
5494 $output_rules .=
5495 "$condstr${header}: $output\n"
5496 # Recover from removal of $header
5497 . "$condstr\t\@if test ! -f \$@; then \\\n"
5498 . "$condstr\t rm -f $output; \\\n"
5499 . "$condstr\t \$(MAKE) \$(AM_MAKEFLAGS) $output; \\\n"
5500 . "$condstr\telse :; fi\n";
5501 }
5502 # Distribute the generated file, unless its .y source was
5503 # listed in a nodist_ variable. (&handle_source_transform
5504 # will set DIST_SOURCE.)
5505 &push_dist_common ($header)
5506 if $transform{'DIST_SOURCE'};
5508 # If the files are built in the build directory, then we want
5509 # to remove them with `make clean'. If they are in srcdir
5510 # they shouldn't be touched. However, we can't determine this
5511 # statically, and the GNU rules say that yacc/lex output files
5512 # should be removed by maintainer-clean. So that's what we
5513 # do.
5514 $clean_files{$header} = MAINTAINER_CLEAN;
5515 }
5516 # Erase $OUTPUT on `make maintainer-clean' (by GNU standards).
5517 # See the comment above for $HEADER.
5518 $clean_files{$output} = MAINTAINER_CLEAN;
5519 }
5521 # This is a lex helper which is called whenever we have decided to
5522 # compile a lex file.
5523 sub lang_lex_target_hook
5524 {
5525 my ($self, $aggregate, $output, $input) = @_;
5526 # If the files are built in the build directory, then we want to
5527 # remove them with `make clean'. If they are in srcdir they
5528 # shouldn't be touched. However, we can't determine this
5529 # statically, and the GNU rules say that yacc/lex output files
5530 # should be removed by maintainer-clean. So that's what we do.
5531 $clean_files{$output} = MAINTAINER_CLEAN;
5532 }
5534 # This is a helper for both lex and yacc.
5535 sub yacc_lex_finish_helper
5536 {
5537 return if defined $language_scratch{'lex-yacc-done'};
5538 $language_scratch{'lex-yacc-done'} = 1;
5540 # FIXME: for now, no line number.
5541 require_conf_file ($configure_ac, FOREIGN, 'ylwrap');
5542 &define_variable ('YLWRAP', "$am_config_aux_dir/ylwrap", INTERNAL);
5543 }
5545 sub lang_yacc_finish
5546 {
5547 return if defined $language_scratch{'yacc-done'};
5548 $language_scratch{'yacc-done'} = 1;
5550 reject_var 'YACCFLAGS', "`YACCFLAGS' obsolete; use `YFLAGS' instead";
5552 yacc_lex_finish_helper;
5553 }
5556 sub lang_lex_finish
5557 {
5558 return if defined $language_scratch{'lex-done'};
5559 $language_scratch{'lex-done'} = 1;
5561 yacc_lex_finish_helper;
5562 }
5565 # Given a hash table of linker names, pick the name that has the most
5566 # precedence. This is lame, but something has to have global
5567 # knowledge in order to eliminate the conflict. Add more linkers as
5568 # required.
5569 sub resolve_linker
5570 {
5571 my (%linkers) = @_;
5573 foreach my $l (qw(GCJLINK CXXLINK F77LINK FCLINK OBJCLINK UPCLINK))
5574 {
5575 return $l if defined $linkers{$l};
5576 }
5577 return 'LINK';
5578 }
5580 # Called to indicate that an extension was used.
5581 sub saw_extension
5582 {
5583 my ($ext) = @_;
5584 if (! defined $extension_seen{$ext})
5585 {
5586 $extension_seen{$ext} = 1;
5587 }
5588 else
5589 {
5590 ++$extension_seen{$ext};
5591 }
5592 }
5594 # Return the number of files seen for a given language. Knows about
5595 # special cases we care about. FIXME: this is hideous. We need
5596 # something that involves real language objects. For instance yacc
5597 # and yaccxx could both derive from a common yacc class which would
5598 # know about the strange ylwrap requirement. (Or better yet we could
5599 # just not support legacy yacc!)
5600 sub count_files_for_language
5601 {
5602 my ($name) = @_;
5604 my @names;
5605 if ($name eq 'yacc' || $name eq 'yaccxx')
5606 {
5607 @names = ('yacc', 'yaccxx');
5608 }
5609 elsif ($name eq 'lex' || $name eq 'lexxx')
5610 {
5611 @names = ('lex', 'lexxx');
5612 }
5613 else
5614 {
5615 @names = ($name);
5616 }
5618 my $r = 0;
5619 foreach $name (@names)
5620 {
5621 my $lang = $languages{$name};
5622 foreach my $ext (@{$lang->extensions})
5623 {
5624 $r += $extension_seen{$ext}
5625 if defined $extension_seen{$ext};
5626 }
5627 }
5629 return $r
5630 }
5632 # Called to ask whether source files have been seen . If HEADERS is 1,
5633 # headers can be included.
5634 sub saw_sources_p
5635 {
5636 my ($headers) = @_;
5638 # count all the sources
5639 my $count = 0;
5640 foreach my $val (values %extension_seen)
5641 {
5642 $count += $val;
5643 }
5645 if (!$headers)
5646 {
5647 $count -= count_files_for_language ('header');
5648 }
5650 return $count > 0;
5651 }
5654 # register_language (%ATTRIBUTE)
5655 # ------------------------------
5656 # Register a single language.
5657 # Each %ATTRIBUTE is of the form ATTRIBUTE => VALUE.
5658 sub register_language (%)
5659 {
5660 my (%option) = @_;
5662 # Set the defaults.
5663 $option{'ansi'} = 0
5664 unless defined $option{'ansi'};
5665 $option{'autodep'} = 'no'
5666 unless defined $option{'autodep'};
5667 $option{'linker'} = ''
5668 unless defined $option{'linker'};
5669 $option{'flags'} = []
5670 unless defined $option{'flags'};
5671 $option{'output_extensions'} = sub { return ( '.$(OBJEXT)', '.lo' ) }
5672 unless defined $option{'output_extensions'};
5673 $option{'nodist_specific'} = 0
5674 unless defined $option{'nodist_specific'};
5676 my $lang = new Language (%option);
5678 # Fill indexes.
5679 $extension_map{$_} = $lang->name foreach @{$lang->extensions};
5680 $languages{$lang->name} = $lang;
5681 my $link = $lang->linker;
5682 if ($link)
5683 {
5684 if (exists $link_languages{$link})
5685 {
5686 prog_error ("`$link' has different definitions in "
5687 . $lang->name . " and " . $link_languages{$link}->name)
5688 if $lang->link ne $link_languages{$link}->link;
5689 }
5690 else
5691 {
5692 $link_languages{$link} = $lang;
5693 }
5694 }
5696 # Update the pattern of known extensions.
5697 accept_extensions (@{$lang->extensions});
5699 # Upate the $suffix_rule map.
5700 foreach my $suffix (@{$lang->extensions})
5701 {
5702 foreach my $dest (&{$lang->output_extensions} ($suffix))
5703 {
5704 register_suffix_rule (INTERNAL, $suffix, $dest);
5705 }
5706 }
5707 }
5709 # derive_suffix ($EXT, $OBJ)
5710 # --------------------------
5711 # This function is used to find a path from a user-specified suffix $EXT
5712 # to $OBJ or to some other suffix we recognize internally, e.g. `cc'.
5713 sub derive_suffix ($$)
5714 {
5715 my ($source_ext, $obj) = @_;
5717 while (! $extension_map{$source_ext}
5718 && $source_ext ne $obj
5719 && exists $suffix_rules->{$source_ext}
5720 && exists $suffix_rules->{$source_ext}{$obj})
5721 {
5722 $source_ext = $suffix_rules->{$source_ext}{$obj}[0];
5723 }
5725 return $source_ext;
5726 }
5729 ################################################################
5731 # Pretty-print something and append to output_rules.
5732 sub pretty_print_rule
5733 {
5734 $output_rules .= &makefile_wrap (@_);
5735 }
5738 ################################################################
5741 ## -------------------------------- ##
5742 ## Handling the conditional stack. ##
5743 ## -------------------------------- ##
5746 # $STRING
5747 # make_conditional_string ($NEGATE, $COND)
5748 # ----------------------------------------
5749 sub make_conditional_string ($$)
5750 {
5751 my ($negate, $cond) = @_;
5752 $cond = "${cond}_TRUE"
5753 unless $cond =~ /^TRUE|FALSE$/;
5754 $cond = Automake::Condition::conditional_negate ($cond)
5755 if $negate;
5756 return $cond;
5757 }
5760 my %_am_macro_for_cond =
5761 (
5762 AMDEP => "one of the compiler tests\n"
5763 . " AC_PROG_CC, AC_PROG_CXX, AC_PROG_CXX, AC_PROG_OBJC,\n"
5764 . " AM_PROG_AS, AM_PROG_GCJ, AM_PROG_UPC",
5765 am__fastdepCC => 'AC_PROG_CC',
5766 am__fastdepCCAS => 'AM_PROG_AS',
5767 am__fastdepCXX => 'AC_PROG_CXX',
5768 am__fastdepGCJ => 'AM_PROG_GCJ',
5769 am__fastdepOBJC => 'AC_PROG_OBJC',
5770 am__fastdepUPC => 'AM_PROG_UPC'
5771 );
5773 # $COND
5774 # cond_stack_if ($NEGATE, $COND, $WHERE)
5775 # --------------------------------------
5776 sub cond_stack_if ($$$)
5777 {
5778 my ($negate, $cond, $where) = @_;
5780 if (! $configure_cond{$cond} && $cond !~ /^TRUE|FALSE$/)
5781 {
5782 my $text = "$cond does not appear in AM_CONDITIONAL";
5783 my $scope = US_LOCAL;
5784 if (exists $_am_macro_for_cond{$cond})
5785 {
5786 my $mac = $_am_macro_for_cond{$cond};
5787 $text .= "\n The usual way to define `$cond' is to add ";
5788 $text .= ($mac =~ / /) ? $mac : "`$mac'";
5789 $text .= "\n to `$configure_ac' and run `aclocal' and `autoconf' again.";
5790 # These warnings appear in Automake files (depend2.am),
5791 # so there is no need to display them more than once:
5792 $scope = US_GLOBAL;
5793 }
5794 error $where, $text, uniq_scope => $scope;
5795 }
5797 push (@cond_stack, make_conditional_string ($negate, $cond));
5799 return new Automake::Condition (@cond_stack);
5800 }
5803 # $COND
5804 # cond_stack_else ($NEGATE, $COND, $WHERE)
5805 # ----------------------------------------
5806 sub cond_stack_else ($$$)
5807 {
5808 my ($negate, $cond, $where) = @_;
5810 if (! @cond_stack)
5811 {
5812 error $where, "else without if";
5813 return FALSE;
5814 }
5816 $cond_stack[$#cond_stack] =
5817 Automake::Condition::conditional_negate ($cond_stack[$#cond_stack]);
5819 # If $COND is given, check against it.
5820 if (defined $cond)
5821 {
5822 $cond = make_conditional_string ($negate, $cond);
5824 error ($where, "else reminder ($negate$cond) incompatible with "
5825 . "current conditional: $cond_stack[$#cond_stack]")
5826 if $cond_stack[$#cond_stack] ne $cond;
5827 }
5829 return new Automake::Condition (@cond_stack);
5830 }
5833 # $COND
5834 # cond_stack_endif ($NEGATE, $COND, $WHERE)
5835 # -----------------------------------------
5836 sub cond_stack_endif ($$$)
5837 {
5838 my ($negate, $cond, $where) = @_;
5839 my $old_cond;
5841 if (! @cond_stack)
5842 {
5843 error $where, "endif without if";
5844 return TRUE;
5845 }
5847 # If $COND is given, check against it.
5848 if (defined $cond)
5849 {
5850 $cond = make_conditional_string ($negate, $cond);
5852 error ($where, "endif reminder ($negate$cond) incompatible with "
5853 . "current conditional: $cond_stack[$#cond_stack]")
5854 if $cond_stack[$#cond_stack] ne $cond;
5855 }
5857 pop @cond_stack;
5859 return new Automake::Condition (@cond_stack);
5860 }
5866 ## ------------------------ ##
5867 ## Handling the variables. ##
5868 ## ------------------------ ##
5871 # &define_pretty_variable ($VAR, $COND, $WHERE, @VALUE)
5872 # -----------------------------------------------------
5873 # Like define_variable, but the value is a list, and the variable may
5874 # be defined conditionally. The second argument is the Condition
5875 # under which the value should be defined; this should be the empty
5876 # string to define the variable unconditionally. The third argument
5877 # is a list holding the values to use for the variable. The value is
5878 # pretty printed in the output file.
5879 sub define_pretty_variable ($$$@)
5880 {
5881 my ($var, $cond, $where, @value) = @_;
5883 if (! vardef ($var, $cond))
5884 {
5885 Automake::Variable::define ($var, VAR_AUTOMAKE, '', $cond, "@value",
5886 '', $where, VAR_PRETTY);
5887 rvar ($var)->rdef ($cond)->set_seen;
5888 }
5889 }
5892 # define_variable ($VAR, $VALUE, $WHERE)
5893 # --------------------------------------
5894 # Define a new Automake Makefile variable VAR to VALUE, but only if
5895 # not already defined.
5896 sub define_variable ($$$)
5897 {
5898 my ($var, $value, $where) = @_;
5899 define_pretty_variable ($var, TRUE, $where, $value);
5900 }
5903 # define_files_variable ($VAR, \@BASENAME, $EXTENSION, $WHERE)
5904 # -----------------------------------------------------------
5905 # Define the $VAR which content is the list of file names composed of
5906 # a @BASENAME and the $EXTENSION.
5907 sub define_files_variable ($\@$$)
5908 {
5909 my ($var, $basename, $extension, $where) = @_;
5910 define_variable ($var,
5911 join (' ', map { "$_.$extension" } @$basename),
5912 $where);
5913 }
5916 # Like define_variable, but define a variable to be the configure
5917 # substitution by the same name.
5918 sub define_configure_variable ($)
5919 {
5920 my ($var) = @_;
5922 my $pretty = VAR_ASIS;
5923 my $owner = VAR_CONFIGURE;
5925 # Some variables we do not want to output. For instance it
5926 # would be a bad idea to output `U = @U@` when `@U@` can be
5927 # substituted as `\`.
5928 $pretty = VAR_SILENT if exists $ignored_configure_vars{$var};
5930 # ANSI2KNR is a variable that Automake wants to redefine, so
5931 # it must be owned by Automake. (It is also used as a proof
5932 # that AM_C_PROTOTYPES has been run, that's why we do not simply
5933 # omit the AC_SUBST.)
5934 $owner = VAR_AUTOMAKE if $var eq 'ANSI2KNR';
5936 Automake::Variable::define ($var, $owner, '', TRUE, subst $var,
5937 '', $configure_vars{$var}, $pretty);
5938 }
5941 # define_compiler_variable ($LANG)
5942 # --------------------------------
5943 # Define a compiler variable. We also handle defining the `LT'
5944 # version of the command when using libtool.
5945 sub define_compiler_variable ($)
5946 {
5947 my ($lang) = @_;
5949 my ($var, $value) = ($lang->compiler, $lang->compile);
5950 my $libtool_tag = '';
5951 $libtool_tag = '--tag=' . $lang->libtool_tag . ' '
5952 if $lang->libtool_tag && exists $libtool_tags{$lang->libtool_tag};
5953 &define_variable ($var, $value, INTERNAL);
5954 &define_variable ("LT$var",
5955 "\$(LIBTOOL) $libtool_tag\$(AM_LIBTOOLFLAGS) "
5956 . "\$(LIBTOOLFLAGS) --mode=compile $value",
5957 INTERNAL)
5958 if var ('LIBTOOL');
5959 }
5962 # define_linker_variable ($LANG)
5963 # ------------------------------
5964 # Define linker variables.
5965 sub define_linker_variable ($)
5966 {
5967 my ($lang) = @_;
5969 my $libtool_tag = '';
5970 $libtool_tag = '--tag=' . $lang->libtool_tag . ' '
5971 if $lang->libtool_tag && exists $libtool_tags{$lang->libtool_tag};
5972 # CCLD = $(CC).
5973 &define_variable ($lang->lder, $lang->ld, INTERNAL);
5974 # CCLINK = $(CCLD) blah blah...
5975 &define_variable ($lang->linker,
5976 ((var ('LIBTOOL') ?
5977 "\$(LIBTOOL) $libtool_tag\$(AM_LIBTOOLFLAGS) "
5978 . "\$(LIBTOOLFLAGS) --mode=link " : '')
5979 . $lang->link),
5980 INTERNAL);
5981 }
5983 sub define_per_target_linker_variable ($$)
5984 {
5985 my ($linker, $target) = @_;
5987 # If the user wrote a custom link command, we don't define ours.
5988 return "${target}_LINK"
5989 if set_seen "${target}_LINK";
5991 my $xlink = $linker ? $linker : 'LINK';
5993 my $lang = $link_languages{$xlink};
5994 prog_error "Unknown language for linker variable `$xlink'"
5995 unless $lang;
5997 my $link_command = $lang->link;
5998 if (var 'LIBTOOL')
5999 {
6000 my $libtool_tag = '';
6001 $libtool_tag = '--tag=' . $lang->libtool_tag . ' '
6002 if $lang->libtool_tag && exists $libtool_tags{$lang->libtool_tag};
6004 $link_command =
6005 "\$(LIBTOOL) $libtool_tag\$(AM_LIBTOOLFLAGS) \$(LIBTOOLFLAGS) "
6006 . "--mode=link " . $link_command;
6007 }
6009 # Rewrite each occurrence of `AM_$flag' in the link
6010 # command into `${derived}_$flag' if it exists.
6011 my $orig_command = $link_command;
6012 my @flags = (@{$lang->flags}, 'LDFLAGS');
6013 push @flags, 'LIBTOOLFLAGS' if var 'LIBTOOL';
6014 for my $flag (@flags)
6015 {
6016 my $val = "${target}_$flag";
6017 $link_command =~ s/\(AM_$flag\)/\($val\)/
6018 if set_seen ($val);
6019 }
6021 # If the computed command is the same as the generic command, use
6022 # the command linker variable.
6023 return $lang->linker
6024 if $link_command eq $orig_command;
6026 &define_variable ("${target}_LINK", $link_command, INTERNAL);
6027 return "${target}_LINK";
6028 }
6030 ################################################################
6032 # &check_trailing_slash ($WHERE, $LINE)
6033 # --------------------------------------
6034 # Return 1 iff $LINE ends with a slash.
6035 # Might modify $LINE.
6036 sub check_trailing_slash ($\$)
6037 {
6038 my ($where, $line) = @_;
6040 # Ignore `##' lines.
6041 return 0 if $$line =~ /$IGNORE_PATTERN/o;
6043 # Catch and fix a common error.
6044 msg "syntax", $where, "whitespace following trailing backslash"
6045 if $$line =~ s/\\\s+\n$/\\\n/;
6047 return $$line =~ /\\$/;
6048 }
6051 # &read_am_file ($AMFILE, $WHERE)
6052 # -------------------------------
6053 # Read Makefile.am and set up %contents. Simultaneously copy lines
6054 # from Makefile.am into $output_trailer, or define variables as
6055 # appropriate. NOTE we put rules in the trailer section. We want
6056 # user rules to come after our generated stuff.
6057 sub read_am_file ($$)
6058 {
6059 my ($amfile, $where) = @_;
6061 my $am_file = new Automake::XFile ("< $amfile");
6062 verb "reading $amfile";
6064 # Keep track of the youngest output dependency.
6065 my $mtime = mtime $amfile;
6066 $output_deps_greatest_timestamp = $mtime
6067 if $mtime > $output_deps_greatest_timestamp;
6069 my $spacing = '';
6070 my $comment = '';
6071 my $blank = 0;
6072 my $saw_bk = 0;
6073 my $var_look = VAR_ASIS;
6075 use constant IN_VAR_DEF => 0;
6076 use constant IN_RULE_DEF => 1;
6077 use constant IN_COMMENT => 2;
6078 my $prev_state = IN_RULE_DEF;
6080 while ($_ = $am_file->getline)
6081 {
6082 $where->set ("$amfile:$.");
6083 if (/$IGNORE_PATTERN/o)
6084 {
6085 # Merely delete comments beginning with two hashes.
6086 }
6087 elsif (/$WHITE_PATTERN/o)
6088 {
6089 error $where, "blank line following trailing backslash"
6090 if $saw_bk;
6091 # Stick a single white line before the incoming macro or rule.
6092 $spacing = "\n";
6093 $blank = 1;
6094 # Flush all comments seen so far.
6095 if ($comment ne '')
6096 {
6097 $output_vars .= $comment;
6098 $comment = '';
6099 }
6100 }
6101 elsif (/$COMMENT_PATTERN/o)
6102 {
6103 # Stick comments before the incoming macro or rule. Make
6104 # sure a blank line precedes the first block of comments.
6105 $spacing = "\n" unless $blank;
6106 $blank = 1;
6107 $comment .= $spacing . $_;
6108 $spacing = '';
6109 $prev_state = IN_COMMENT;
6110 }
6111 else
6112 {
6113 last;
6114 }
6115 $saw_bk = check_trailing_slash ($where, $_);
6116 }
6118 # We save the conditional stack on entry, and then check to make
6119 # sure it is the same on exit. This lets us conditionally include
6120 # other files.
6121 my @saved_cond_stack = @cond_stack;
6122 my $cond = new Automake::Condition (@cond_stack);
6124 my $last_var_name = '';
6125 my $last_var_type = '';
6126 my $last_var_value = '';
6127 my $last_where;
6128 # FIXME: shouldn't use $_ in this loop; it is too big.
6129 while ($_)
6130 {
6131 $where->set ("$amfile:$.");
6133 # Make sure the line is \n-terminated.
6134 chomp;
6135 $_ .= "\n";
6137 # Don't look at MAINTAINER_MODE_TRUE here. That shouldn't be
6138 # used by users. @MAINT@ is an anachronism now.
6139 $_ =~ s/\@MAINT\@//g
6140 unless $seen_maint_mode;
6142 my $new_saw_bk = check_trailing_slash ($where, $_);
6144 if (/$IGNORE_PATTERN/o)
6145 {
6146 # Merely delete comments beginning with two hashes.
6148 # Keep any backslash from the previous line.
6149 $new_saw_bk = $saw_bk;
6150 }
6151 elsif (/$WHITE_PATTERN/o)
6152 {
6153 # Stick a single white line before the incoming macro or rule.
6154 $spacing = "\n";
6155 error $where, "blank line following trailing backslash"
6156 if $saw_bk;
6157 }
6158 elsif (/$COMMENT_PATTERN/o)
6159 {
6160 error $where, "comment following trailing backslash"
6161 if $saw_bk && $comment eq '';
6163 # Stick comments before the incoming macro or rule.
6164 $comment .= $spacing . $_;
6165 $spacing = '';
6166 $prev_state = IN_COMMENT;
6167 }
6168 elsif ($saw_bk)
6169 {
6170 if ($prev_state == IN_RULE_DEF)
6171 {
6172 my $cond = new Automake::Condition @cond_stack;
6173 $output_trailer .= $cond->subst_string;
6174 $output_trailer .= $_;
6175 }
6176 elsif ($prev_state == IN_COMMENT)
6177 {
6178 # If the line doesn't start with a `#', add it.
6179 # We do this because a continued comment like
6180 # # A = foo \
6181 # bar \
6182 # baz
6183 # is not portable. BSD make doesn't honor
6184 # escaped newlines in comments.
6185 s/^#?/#/;
6186 $comment .= $spacing . $_;
6187 }
6188 else # $prev_state == IN_VAR_DEF
6189 {
6190 $last_var_value .= ' '
6191 unless $last_var_value =~ /\s$/;
6192 $last_var_value .= $_;
6194 if (!/\\$/)
6195 {
6196 Automake::Variable::define ($last_var_name, VAR_MAKEFILE,
6197 $last_var_type, $cond,
6198 $last_var_value, $comment,
6199 $last_where, VAR_ASIS)
6200 if $cond != FALSE;
6201 $comment = $spacing = '';
6202 }
6203 }
6204 }
6206 elsif (/$IF_PATTERN/o)
6207 {
6208 $cond = cond_stack_if ($1, $2, $where);
6209 }
6210 elsif (/$ELSE_PATTERN/o)
6211 {
6212 $cond = cond_stack_else ($1, $2, $where);
6213 }
6214 elsif (/$ENDIF_PATTERN/o)
6215 {
6216 $cond = cond_stack_endif ($1, $2, $where);
6217 }
6219 elsif (/$RULE_PATTERN/o)
6220 {
6221 # Found a rule.
6222 $prev_state = IN_RULE_DEF;
6224 # For now we have to output all definitions of user rules
6225 # and can't diagnose duplicates (see the comment in
6226 # Automake::Rule::define). So we go on and ignore the return value.
6227 Automake::Rule::define ($1, $amfile, RULE_USER, $cond, $where);
6229 check_variable_expansions ($_, $where);
6231 $output_trailer .= $comment . $spacing;
6232 my $cond = new Automake::Condition @cond_stack;
6233 $output_trailer .= $cond->subst_string;
6234 $output_trailer .= $_;
6235 $comment = $spacing = '';
6236 }
6237 elsif (/$ASSIGNMENT_PATTERN/o)
6238 {
6239 # Found a macro definition.
6240 $prev_state = IN_VAR_DEF;
6241 $last_var_name = $1;
6242 $last_var_type = $2;
6243 $last_var_value = $3;
6244 $last_where = $where->clone;
6245 if ($3 ne '' && substr ($3, -1) eq "\\")
6246 {
6247 # We preserve the `\' because otherwise the long lines
6248 # that are generated will be truncated by broken
6249 # `sed's.
6250 $last_var_value = $3 . "\n";
6251 }
6252 # Normally we try to output variable definitions in the
6253 # same format they were input. However, POSIX compliant
6254 # systems are not required to support lines longer than
6255 # 2048 bytes (most notably, some sed implementation are
6256 # limited to 4000 bytes, and sed is used by config.status
6257 # to rewrite Makefile.in into Makefile). Moreover nobody
6258 # would really write such long lines by hand since it is
6259 # hardly maintainable. So if a line is longer that 1000
6260 # bytes (an arbitrary limit), assume it has been
6261 # automatically generated by some tools, and flatten the
6262 # variable definition. Otherwise, keep the variable as it
6263 # as been input.
6264 $var_look = VAR_PRETTY if length ($last_var_value) >= 1000;
6266 if (!/\\$/)
6267 {
6268 Automake::Variable::define ($last_var_name, VAR_MAKEFILE,
6269 $last_var_type, $cond,
6270 $last_var_value, $comment,
6271 $last_where, $var_look)
6272 if $cond != FALSE;
6273 $comment = $spacing = '';
6274 $var_look = VAR_ASIS;
6275 }
6276 }
6277 elsif (/$INCLUDE_PATTERN/o)
6278 {
6279 my $path = $1;
6281 if ($path =~ s/^\$\(top_srcdir\)\///)
6282 {
6283 push (@include_stack, "\$\(top_srcdir\)/$path");
6284 # Distribute any included file.
6286 # Always use the $(top_srcdir) prefix in DIST_COMMON,
6287 # otherwise OSF make will implicitly copy the included
6288 # file in the build tree during `make distdir' to satisfy
6289 # the dependency.
6290 # (subdircond2.test and subdircond3.test will fail.)
6291 push_dist_common ("\$\(top_srcdir\)/$path");
6292 }
6293 else
6294 {
6295 $path =~ s/\$\(srcdir\)\///;
6296 push (@include_stack, "\$\(srcdir\)/$path");
6297 # Always use the $(srcdir) prefix in DIST_COMMON,
6298 # otherwise OSF make will implicitly copy the included
6299 # file in the build tree during `make distdir' to satisfy
6300 # the dependency.
6301 # (subdircond2.test and subdircond3.test will fail.)
6302 push_dist_common ("\$\(srcdir\)/$path");
6303 $path = $relative_dir . "/" . $path if $relative_dir ne '.';
6304 }
6305 $where->push_context ("`$path' included from here");
6306 &read_am_file ($path, $where);
6307 $where->pop_context;
6308 }
6309 else
6310 {
6311 # This isn't an error; it is probably a continued rule.
6312 # In fact, this is what we assume.
6313 $prev_state = IN_RULE_DEF;
6314 check_variable_expansions ($_, $where);
6315 $output_trailer .= $comment . $spacing;
6316 my $cond = new Automake::Condition @cond_stack;
6317 $output_trailer .= $cond->subst_string;
6318 $output_trailer .= $_;
6319 $comment = $spacing = '';
6320 error $where, "`#' comment at start of rule is unportable"
6321 if $_ =~ /^\t\s*\#/;
6322 }
6324 $saw_bk = $new_saw_bk;
6325 $_ = $am_file->getline;
6326 }
6328 $output_trailer .= $comment;
6330 error ($where, "trailing backslash on last line")
6331 if $saw_bk;
6333 error ($where, (@cond_stack ? "unterminated conditionals: @cond_stack"
6334 : "too many conditionals closed in include file"))
6335 if "@saved_cond_stack" ne "@cond_stack";
6336 }
6339 # define_standard_variables ()
6340 # ----------------------------
6341 # A helper for read_main_am_file which initializes configure variables
6342 # and variables from header-vars.am.
6343 sub define_standard_variables
6344 {
6345 my $saved_output_vars = $output_vars;
6346 my ($comments, undef, $rules) =
6347 file_contents_internal (1, "$libdir/am/header-vars.am",
6348 new Automake::Location);
6350 foreach my $var (sort keys %configure_vars)
6351 {
6352 &define_configure_variable ($var);
6353 }
6355 $output_vars .= $comments . $rules;
6356 }
6358 # Read main am file.
6359 sub read_main_am_file
6360 {
6361 my ($amfile) = @_;
6363 # This supports the strange variable tricks we are about to play.
6364 prog_error (macros_dump () . "variable defined before read_main_am_file")
6365 if (scalar (variables) > 0);
6367 # Generate copyright header for generated Makefile.in.
6368 # We do discard the output of predefined variables, handled below.
6369 $output_vars = ("# $in_file_name generated by automake "
6370 . $VERSION . " from $am_file_name.\n");
6371 $output_vars .= '# ' . subst ('configure_input') . "\n";
6372 $output_vars .= $gen_copyright;
6374 # We want to predefine as many variables as possible. This lets
6375 # the user set them with `+=' in Makefile.am.
6376 &define_standard_variables;
6378 # Read user file, which might override some of our values.
6379 &read_am_file ($amfile, new Automake::Location);
6380 }
6384 ################################################################
6386 # $FLATTENED
6387 # &flatten ($STRING)
6388 # ------------------
6389 # Flatten the $STRING and return the result.
6390 sub flatten
6391 {
6392 $_ = shift;
6394 s/\\\n//somg;
6395 s/\s+/ /g;
6396 s/^ //;
6397 s/ $//;
6399 return $_;
6400 }
6403 # transform_token ($TOKEN, \%PAIRS, $KEY)
6404 # =======================================
6405 # Return the value associated to $KEY in %PAIRS, as used on $TOKEN
6406 # (which should be ?KEY? or any of the special %% requests)..
6407 sub transform_token ($$$)
6408 {
6409 my ($token, $transform, $key) = @_;
6410 my $res = $transform->{$key};
6411 prog_error "Unknown key `$key' in `$token'" unless defined $res;
6412 return $res;
6413 }
6416 # transform ($TOKEN, \%PAIRS)
6417 # ===========================
6418 # If ($TOKEN, $VAL) is in %PAIRS:
6419 # - replaces %KEY% with $VAL,
6420 # - enables/disables ?KEY? and ?!KEY?,
6421 # - replaces %?KEY% with TRUE or FALSE.
6422 # - replaces %KEY?IFTRUE%, %KEY:IFFALSE%, and %KEY?IFTRUE:IFFALSE% with
6423 # IFTRUE / IFFALSE, as appropriate.
6424 sub transform ($$)
6425 {
6426 my ($token, $transform) = @_;
6428 # %KEY%.
6429 # Must be before the following pattern to exclude the case
6430 # when there is neither IFTRUE nor IFFALSE.
6431 if ($token =~ /^%([\w\-]+)%$/)
6432 {
6433 return transform_token ($token, $transform, $1);
6434 }
6435 # %KEY?IFTRUE%, %KEY:IFFALSE%, and %KEY?IFTRUE:IFFALSE%.
6436 elsif ($token =~ /^%([\w\-]+)(?:\?([^?:%]+))?(?::([^?:%]+))?%$/)
6437 {
6438 return transform_token ($token, $transform, $1) ? ($2 || '') : ($3 || '');
6439 }
6440 # %?KEY%.
6441 elsif ($token =~ /^%\?([\w\-]+)%$/)
6442 {
6443 return transform_token ($token, $transform, $1) ? 'TRUE' : 'FALSE';
6444 }
6445 # ?KEY? and ?!KEY?.
6446 elsif ($token =~ /^ \? (!?) ([\w\-]+) \? $/x)
6447 {
6448 my $neg = ($1 eq '!') ? 1 : 0;
6449 my $val = transform_token ($token, $transform, $2);
6450 return (!!$val == $neg) ? '##%' : '';
6451 }
6452 else
6453 {
6454 prog_error "Unknown request format: $token";
6455 }
6456 }
6459 # @PARAGRAPHS
6460 # &make_paragraphs ($MAKEFILE, [%TRANSFORM])
6461 # ------------------------------------------
6462 # Load a $MAKEFILE, apply the %TRANSFORM, and return it as a list of
6463 # paragraphs.
6464 sub make_paragraphs ($%)
6465 {
6466 my ($file, %transform) = @_;
6468 # Complete %transform with global options.
6469 # Note that %transform goes last, so it overrides global options.
6470 %transform = ('CYGNUS' => !! option 'cygnus',
6471 'MAINTAINER-MODE'
6472 => $seen_maint_mode ? subst ('MAINTAINER_MODE_TRUE') : '',
6474 'LZMA' => !! option 'dist-lzma',
6475 'BZIP2' => !! option 'dist-bzip2',
6476 'COMPRESS' => !! option 'dist-tarZ',
6477 'GZIP' => ! option 'no-dist-gzip',
6478 'SHAR' => !! option 'dist-shar',
6479 'ZIP' => !! option 'dist-zip',
6481 'INSTALL-INFO' => ! option 'no-installinfo',
6482 'INSTALL-MAN' => ! option 'no-installman',
6483 'CK-NEWS' => !! option 'check-news',
6485 'SUBDIRS' => !! var ('SUBDIRS'),
6486 'TOPDIR_P' => $relative_dir eq '.',
6488 'BUILD' => ($seen_canonical >= AC_CANONICAL_BUILD),
6489 'HOST' => ($seen_canonical >= AC_CANONICAL_HOST),
6490 'TARGET' => ($seen_canonical >= AC_CANONICAL_TARGET),
6492 'LIBTOOL' => !! var ('LIBTOOL'),
6493 'NONLIBTOOL' => 1,
6494 'FIRST' => ! $transformed_files{$file},
6495 %transform);
6497 $transformed_files{$file} = 1;
6498 $_ = $am_file_cache{$file};
6500 if (! defined $_)
6501 {
6502 verb "reading $file";
6503 # Swallow the whole file.
6504 my $fc_file = new Automake::XFile "< $file";
6505 my $saved_dollar_slash = $/;
6506 undef $/;
6507 $_ = $fc_file->getline;
6508 $/ = $saved_dollar_slash;
6509 $fc_file->close;
6511 # Remove ##-comments.
6512 # Besides we don't need more than two consecutive new-lines.
6513 s/(?:$IGNORE_PATTERN|(?<=\n\n)\n+)//gom;
6515 $am_file_cache{$file} = $_;
6516 }
6518 # Substitute Automake template tokens.
6519 s/(?: % \?? [\w\-]+ %
6520 | % [\w\-]+ (?:\?[^?:%]+)? (?::[^?:%]+)? %
6521 | \? !? [\w\-]+ \?
6522 )/transform($&, \%transform)/gex;
6523 # transform() may have added some ##%-comments to strip.
6524 # (we use `##%' instead of `##' so we can distinguish ##%##%##% from
6525 # ####### and do not remove the latter.)
6526 s/^[ \t]*(?:##%)+.*\n//gm;
6528 # Split at unescaped new lines.
6529 my @lines = split (/(?<!\\)\n/, $_);
6530 my @res;
6532 while (defined ($_ = shift @lines))
6533 {
6534 my $paragraph = $_;
6535 # If we are a rule, eat as long as we start with a tab.
6536 if (/$RULE_PATTERN/smo)
6537 {
6538 while (defined ($_ = shift @lines) && $_ =~ /^\t/)
6539 {
6540 $paragraph .= "\n$_";
6541 }
6542 unshift (@lines, $_);
6543 }
6545 # If we are a comments, eat as much comments as you can.
6546 elsif (/$COMMENT_PATTERN/smo)
6547 {
6548 while (defined ($_ = shift @lines)
6549 && $_ =~ /$COMMENT_PATTERN/smo)
6550 {
6551 $paragraph .= "\n$_";
6552 }
6553 unshift (@lines, $_);
6554 }
6556 push @res, $paragraph;
6557 }
6559 return @res;
6560 }
6564 # ($COMMENT, $VARIABLES, $RULES)
6565 # &file_contents_internal ($IS_AM, $FILE, $WHERE, [%TRANSFORM])
6566 # -------------------------------------------------------------
6567 # Return contents of a file from $libdir/am, automatically skipping
6568 # macros or rules which are already known. $IS_AM iff the caller is
6569 # reading an Automake file (as opposed to the user's Makefile.am).
6570 sub file_contents_internal ($$$%)
6571 {
6572 my ($is_am, $file, $where, %transform) = @_;
6574 $where->set ($file);
6576 my $result_vars = '';
6577 my $result_rules = '';
6578 my $comment = '';
6579 my $spacing = '';
6581 # The following flags are used to track rules spanning across
6582 # multiple paragraphs.
6583 my $is_rule = 0; # 1 if we are processing a rule.
6584 my $discard_rule = 0; # 1 if the current rule should not be output.
6586 # We save the conditional stack on entry, and then check to make
6587 # sure it is the same on exit. This lets us conditionally include
6588 # other files.
6589 my @saved_cond_stack = @cond_stack;
6590 my $cond = new Automake::Condition (@cond_stack);
6592 foreach (make_paragraphs ($file, %transform))
6593 {
6594 # FIXME: no line number available.
6595 $where->set ($file);
6597 # Sanity checks.
6598 error $where, "blank line following trailing backslash:\n$_"
6599 if /\\$/;
6600 error $where, "comment following trailing backslash:\n$_"
6601 if /\\#/;
6603 if (/^$/)
6604 {
6605 $is_rule = 0;
6606 # Stick empty line before the incoming macro or rule.
6607 $spacing = "\n";
6608 }
6609 elsif (/$COMMENT_PATTERN/mso)
6610 {
6611 $is_rule = 0;
6612 # Stick comments before the incoming macro or rule.
6613 $comment = "$_\n";
6614 }
6616 # Handle inclusion of other files.
6617 elsif (/$INCLUDE_PATTERN/o)
6618 {
6619 if ($cond != FALSE)
6620 {
6621 my $file = ($is_am ? "$libdir/am/" : '') . $1;
6622 $where->push_context ("`$file' included from here");
6623 # N-ary `.=' fails.
6624 my ($com, $vars, $rules)
6625 = file_contents_internal ($is_am, $file, $where, %transform);
6626 $where->pop_context;
6627 $comment .= $com;
6628 $result_vars .= $vars;
6629 $result_rules .= $rules;
6630 }
6631 }
6633 # Handling the conditionals.
6634 elsif (/$IF_PATTERN/o)
6635 {
6636 $cond = cond_stack_if ($1, $2, $file);
6637 }
6638 elsif (/$ELSE_PATTERN/o)
6639 {
6640 $cond = cond_stack_else ($1, $2, $file);
6641 }
6642 elsif (/$ENDIF_PATTERN/o)
6643 {
6644 $cond = cond_stack_endif ($1, $2, $file);
6645 }
6647 # Handling rules.
6648 elsif (/$RULE_PATTERN/mso)
6649 {
6650 $is_rule = 1;
6651 $discard_rule = 0;
6652 # Separate relationship from optional actions: the first
6653 # `new-line tab" not preceded by backslash (continuation
6654 # line).
6655 my $paragraph = $_;
6656 /^(.*?)(?:(?<!\\)\n(\t.*))?$/s;
6657 my ($relationship, $actions) = ($1, $2 || '');
6659 # Separate targets from dependencies: the first colon.
6660 $relationship =~ /^([^:]+\S+) *: *(.*)$/som;
6661 my ($targets, $dependencies) = ($1, $2);
6662 # Remove the escaped new lines.
6663 # I don't know why, but I have to use a tmp $flat_deps.
6664 my $flat_deps = &flatten ($dependencies);
6665 my @deps = split (' ', $flat_deps);
6667 foreach (split (' ' , $targets))
6668 {
6669 # FIXME: 1. We are not robust to people defining several targets
6670 # at once, only some of them being in %dependencies. The
6671 # actions from the targets in %dependencies are usually generated
6672 # from the content of %actions, but if some targets in $targets
6673 # are not in %dependencies the ELSE branch will output
6674 # a rule for all $targets (i.e. the targets which are both
6675 # in %dependencies and $targets will have two rules).
6677 # FIXME: 2. The logic here is not able to output a
6678 # multi-paragraph rule several time (e.g. for each condition
6679 # it is defined for) because it only knows the first paragraph.
6681 # FIXME: 3. We are not robust to people defining a subset
6682 # of a previously defined "multiple-target" rule. E.g.
6683 # `foo:' after `foo bar:'.
6685 # Output only if not in FALSE.
6686 if (defined $dependencies{$_} && $cond != FALSE)
6687 {
6688 &depend ($_, @deps);
6689 register_action ($_, $actions);
6690 }
6691 else
6692 {
6693 # Free-lance dependency. Output the rule for all the
6694 # targets instead of one by one.
6695 my @undefined_conds =
6696 Automake::Rule::define ($targets, $file,
6697 $is_am ? RULE_AUTOMAKE : RULE_USER,
6698 $cond, $where);
6699 for my $undefined_cond (@undefined_conds)
6700 {
6701 my $condparagraph = $paragraph;
6702 $condparagraph =~ s/^/$undefined_cond->subst_string/gme;
6703 $result_rules .= "$spacing$comment$condparagraph\n";
6704 }
6705 if (scalar @undefined_conds == 0)
6706 {
6707 # Remember to discard next paragraphs
6708 # if they belong to this rule.
6709 # (but see also FIXME: #2 above.)
6710 $discard_rule = 1;
6711 }
6712 $comment = $spacing = '';
6713 last;
6714 }
6715 }
6716 }
6718 elsif (/$ASSIGNMENT_PATTERN/mso)
6719 {
6720 my ($var, $type, $val) = ($1, $2, $3);
6721 error $where, "variable `$var' with trailing backslash"
6722 if /\\$/;
6724 $is_rule = 0;
6726 Automake::Variable::define ($var,
6727 $is_am ? VAR_AUTOMAKE : VAR_MAKEFILE,
6728 $type, $cond, $val, $comment, $where,
6729 VAR_ASIS)
6730 if $cond != FALSE;
6732 $comment = $spacing = '';
6733 }
6734 else
6735 {
6736 # This isn't an error; it is probably some tokens which
6737 # configure is supposed to replace, such as `@SET-MAKE@',
6738 # or some part of a rule cut by an if/endif.
6739 if (! $cond->false && ! ($is_rule && $discard_rule))
6740 {
6741 s/^/$cond->subst_string/gme;
6742 $result_rules .= "$spacing$comment$_\n";
6743 }
6744 $comment = $spacing = '';
6745 }
6746 }
6748 error ($where, @cond_stack ?
6749 "unterminated conditionals: @cond_stack" :
6750 "too many conditionals closed in include file")
6751 if "@saved_cond_stack" ne "@cond_stack";
6753 return ($comment, $result_vars, $result_rules);
6754 }
6757 # $CONTENTS
6758 # &file_contents ($BASENAME, $WHERE, [%TRANSFORM])
6759 # ------------------------------------------------
6760 # Return contents of a file from $libdir/am, automatically skipping
6761 # macros or rules which are already known.
6762 sub file_contents ($$%)
6763 {
6764 my ($basename, $where, %transform) = @_;
6765 my ($comments, $variables, $rules) =
6766 file_contents_internal (1, "$libdir/am/$basename.am", $where,
6767 %transform);
6768 return "$comments$variables$rules";
6769 }
6772 # @PREFIX
6773 # &am_primary_prefixes ($PRIMARY, $CAN_DIST, @PREFIXES)
6774 # -----------------------------------------------------
6775 # Find all variable prefixes that are used for install directories. A
6776 # prefix `zar' qualifies iff:
6777 #
6778 # * `zardir' is a variable.
6779 # * `zar_PRIMARY' is a variable.
6780 #
6781 # As a side effect, it looks for misspellings. It is an error to have
6782 # a variable ending in a "reserved" suffix whose prefix is unknown, e.g.
6783 # "bni_PROGRAMS". However, unusual prefixes are allowed if a variable
6784 # of the same name (with "dir" appended) exists. For instance, if the
6785 # variable "zardir" is defined, then "zar_PROGRAMS" becomes valid.
6786 # This is to provide a little extra flexibility in those cases which
6787 # need it.
6788 sub am_primary_prefixes ($$@)
6789 {
6790 my ($primary, $can_dist, @prefixes) = @_;
6792 local $_;
6793 my %valid = map { $_ => 0 } @prefixes;
6794 $valid{'EXTRA'} = 0;
6795 foreach my $var (variables $primary)
6796 {
6797 # Automake is allowed to define variables that look like primaries
6798 # but which aren't. E.g. INSTALL_sh_DATA.
6799 # Autoconf can also define variables like INSTALL_DATA, so
6800 # ignore all configure variables (at least those which are not
6801 # redefined in Makefile.am).
6802 # FIXME: We should make sure that these variables are not
6803 # conditionally defined (or else adjust the condition below).
6804 my $def = $var->def (TRUE);
6805 next if $def && $def->owner != VAR_MAKEFILE;
6807 my $varname = $var->name;
6809 if ($varname =~ /^(nobase_)?(dist_|nodist_)?(.*)_[[:alnum:]]+$/)
6810 {
6811 my ($base, $dist, $X) = ($1 || '', $2 || '', $3 || '');
6812 if ($dist ne '' && ! $can_dist)
6813 {
6814 err_var ($var,
6815 "invalid variable `$varname': `dist' is forbidden");
6816 }
6817 # Standard directories must be explicitly allowed.
6818 elsif (! defined $valid{$X} && exists $standard_prefix{$X})
6819 {
6820 err_var ($var,
6821 "`${X}dir' is not a legitimate directory " .
6822 "for `$primary'");
6823 }
6824 # A not explicitly valid directory is allowed if Xdir is defined.
6825 elsif (! defined $valid{$X} &&
6826 $var->requires_variables ("`$varname' is used", "${X}dir"))
6827 {
6828 # Nothing to do. Any error message has been output
6829 # by $var->requires_variables.
6830 }
6831 else
6832 {
6833 # Ensure all extended prefixes are actually used.
6834 $valid{"$base$dist$X"} = 1;
6835 }
6836 }
6837 else
6838 {
6839 prog_error "unexpected variable name: $varname";
6840 }
6841 }
6843 # Return only those which are actually defined.
6844 return sort grep { var ($_ . '_' . $primary) } keys %valid;
6845 }
6848 # Handle `where_HOW' variable magic. Does all lookups, generates
6849 # install code, and possibly generates code to define the primary
6850 # variable. The first argument is the name of the .am file to munge,
6851 # the second argument is the primary variable (e.g. HEADERS), and all
6852 # subsequent arguments are possible installation locations.
6853 #
6854 # Returns list of [$location, $value] pairs, where
6855 # $value's are the values in all where_HOW variable, and $location
6856 # there associated location (the place here their parent variables were
6857 # defined).
6858 #
6859 # FIXME: this should be rewritten to be cleaner. It should be broken
6860 # up into multiple functions.
6861 #
6862 # Usage is: am_install_var (OPTION..., file, HOW, where...)
6863 sub am_install_var
6864 {
6865 my (@args) = @_;
6867 my $do_require = 1;
6868 my $can_dist = 0;
6869 my $default_dist = 0;
6870 while (@args)
6871 {
6872 if ($args[0] eq '-noextra')
6873 {
6874 $do_require = 0;
6875 }
6876 elsif ($args[0] eq '-candist')
6877 {
6878 $can_dist = 1;
6879 }
6880 elsif ($args[0] eq '-defaultdist')
6881 {
6882 $default_dist = 1;
6883 $can_dist = 1;
6884 }
6885 elsif ($args[0] !~ /^-/)
6886 {
6887 last;
6888 }
6889 shift (@args);
6890 }
6892 my ($file, $primary, @prefix) = @args;
6894 # Now that configure substitutions are allowed in where_HOW
6895 # variables, it is an error to actually define the primary. We
6896 # allow `JAVA', as it is customarily used to mean the Java
6897 # interpreter. This is but one of several Java hacks. Similarly,
6898 # `PYTHON' is customarily used to mean the Python interpreter.
6899 reject_var $primary, "`$primary' is an anachronism"
6900 unless $primary eq 'JAVA' || $primary eq 'PYTHON';
6902 # Get the prefixes which are valid and actually used.
6903 @prefix = am_primary_prefixes ($primary, $can_dist, @prefix);
6905 # If a primary includes a configure substitution, then the EXTRA_
6906 # form is required. Otherwise we can't properly do our job.
6907 my $require_extra;
6909 my @used = ();
6910 my @result = ();
6912 foreach my $X (@prefix)
6913 {
6914 my $nodir_name = $X;
6915 my $one_name = $X . '_' . $primary;
6916 my $one_var = var $one_name;
6918 my $strip_subdir = 1;
6919 # If subdir prefix should be preserved, do so.
6920 if ($nodir_name =~ /^nobase_/)
6921 {
6922 $strip_subdir = 0;
6923 $nodir_name =~ s/^nobase_//;
6924 }
6926 # If files should be distributed, do so.
6927 my $dist_p = 0;
6928 if ($can_dist)
6929 {
6930 $dist_p = (($default_dist && $nodir_name !~ /^nodist_/)
6931 || (! $default_dist && $nodir_name =~ /^dist_/));
6932 $nodir_name =~ s/^(dist|nodist)_//;
6933 }
6936 # Use the location of the currently processed variable.
6937 # We are not processing a particular condition, so pick the first
6938 # available.
6939 my $tmpcond = $one_var->conditions->one_cond;
6940 my $where = $one_var->rdef ($tmpcond)->location->clone;
6942 # Append actual contents of where_PRIMARY variable to
6943 # @result, skipping @substitutions@.
6944 foreach my $locvals ($one_var->value_as_list_recursive (location => 1))
6945 {
6946 my ($loc, $value) = @$locvals;
6947 # Skip configure substitutions.
6948 if ($value =~ /^\@.*\@$/)
6949 {
6950 if ($nodir_name eq 'EXTRA')
6951 {
6952 error ($where,
6953 "`$one_name' contains configure substitution, "
6954 . "but shouldn't");
6955 }
6956 # Check here to make sure variables defined in
6957 # configure.ac do not imply that EXTRA_PRIMARY
6958 # must be defined.
6959 elsif (! defined $configure_vars{$one_name})
6960 {
6961 $require_extra = $one_name
6962 if $do_require;
6963 }
6964 }
6965 else
6966 {
6967 push (@result, $locvals);
6968 }
6969 }
6970 # A blatant hack: we rewrite each _PROGRAMS primary to include
6971 # EXEEXT.
6972 append_exeext { 1 } $one_name
6973 if $primary eq 'PROGRAMS';
6974 # "EXTRA" shouldn't be used when generating clean targets,
6975 # all, or install targets. We used to warn if EXTRA_FOO was
6976 # defined uselessly, but this was annoying.
6977 next
6978 if $nodir_name eq 'EXTRA';
6980 if ($nodir_name eq 'check')
6981 {
6982 push (@check, '$(' . $one_name . ')');
6983 }
6984 else
6985 {
6986 push (@used, '$(' . $one_name . ')');
6987 }
6989 # Is this to be installed?
6990 my $install_p = $nodir_name ne 'noinst' && $nodir_name ne 'check';
6992 # If so, with install-exec? (or install-data?).
6993 my $exec_p = ($nodir_name =~ /$EXEC_DIR_PATTERN/o);
6995 my $check_options_p = $install_p && !! option 'std-options';
6997 # Use the location of the currently processed variable as context.
6998 $where->push_context ("while processing `$one_name'");
7000 # The variable containing all file to distribute.
7001 my $distvar = "\$($one_name)";
7002 $distvar = shadow_unconditionally ($one_name, $where)
7003 if ($dist_p && $one_var->has_conditional_contents);
7005 # Singular form of $PRIMARY.
7006 (my $one_primary = $primary) =~ s/S$//;
7007 $output_rules .= &file_contents ($file, $where,
7008 PRIMARY => $primary,
7009 ONE_PRIMARY => $one_primary,
7010 DIR => $X,
7011 NDIR => $nodir_name,
7012 BASE => $strip_subdir,
7014 EXEC => $exec_p,
7015 INSTALL => $install_p,
7016 DIST => $dist_p,
7017 DISTVAR => $distvar,
7018 'CK-OPTS' => $check_options_p);
7019 }
7021 # The JAVA variable is used as the name of the Java interpreter.
7022 # The PYTHON variable is used as the name of the Python interpreter.
7023 if (@used && $primary ne 'JAVA' && $primary ne 'PYTHON')
7024 {
7025 # Define it.
7026 define_pretty_variable ($primary, TRUE, INTERNAL, @used);
7027 $output_vars .= "\n";
7028 }
7030 err_var ($require_extra,
7031 "`$require_extra' contains configure substitution,\n"
7032 . "but `EXTRA_$primary' not defined")
7033 if ($require_extra && ! var ('EXTRA_' . $primary));
7035 # Push here because PRIMARY might be configure time determined.
7036 push (@all, '$(' . $primary . ')')
7037 if @used && $primary ne 'JAVA' && $primary ne 'PYTHON';
7039 # Make the result unique. This lets the user use conditionals in
7040 # a natural way, but still lets us program lazily -- we don't have
7041 # to worry about handling a particular object more than once.
7042 # We will keep only one location per object.
7043 my %result = ();
7044 for my $pair (@result)
7045 {
7046 my ($loc, $val) = @$pair;
7047 $result{$val} = $loc;
7048 }
7049 my @l = sort keys %result;
7050 return map { [$result{$_}->clone, $_] } @l;
7051 }
7054 ################################################################
7056 # Each key in this hash is the name of a directory holding a
7057 # Makefile.in. These variables are local to `is_make_dir'.
7058 my %make_dirs = ();
7059 my $make_dirs_set = 0;
7061 sub is_make_dir
7062 {
7063 my ($dir) = @_;
7064 if (! $make_dirs_set)
7065 {
7066 foreach my $iter (@configure_input_files)
7067 {
7068 $make_dirs{dirname ($iter)} = 1;
7069 }
7070 # We also want to notice Makefile.in's.
7071 foreach my $iter (@other_input_files)
7072 {
7073 if ($iter =~ /Makefile\.in$/)
7074 {
7075 $make_dirs{dirname ($iter)} = 1;
7076 }
7077 }
7078 $make_dirs_set = 1;
7079 }
7080 return defined $make_dirs{$dir};
7081 }
7083 ################################################################
7085 # Find the aux dir. This should match the algorithm used by
7086 # ./configure. (See the Autoconf documentation for for
7087 # AC_CONFIG_AUX_DIR.)
7088 sub locate_aux_dir ()
7089 {
7090 if (! $config_aux_dir_set_in_configure_ac)
7091 {
7092 # The default auxiliary directory is the first
7093 # of ., .., or ../.. that contains install-sh.
7094 # Assume . if install-sh doesn't exist yet.
7095 for my $dir (qw (. .. ../..))
7096 {
7097 if (-f "$dir/install-sh")
7098 {
7099 $config_aux_dir = $dir;
7100 last;
7101 }
7102 }
7103 $config_aux_dir = '.' unless $config_aux_dir;
7104 }
7105 # Avoid unsightly '/.'s.
7106 $am_config_aux_dir =
7107 '$(top_srcdir)' . ($config_aux_dir eq '.' ? "" : "/$config_aux_dir");
7108 $am_config_aux_dir =~ s,/*$,,;
7109 }
7112 # &maybe_push_required_file ($DIR, $FILE, $FULLFILE)
7113 # --------------------------------------------------
7114 # See if we want to push this file onto dist_common. This function
7115 # encodes the rules for deciding when to do so.
7116 sub maybe_push_required_file
7117 {
7118 my ($dir, $file, $fullfile) = @_;
7120 if ($dir eq $relative_dir)
7121 {
7122 push_dist_common ($file);
7123 return 1;
7124 }
7125 elsif ($relative_dir eq '.' && ! &is_make_dir ($dir))
7126 {
7127 # If we are doing the topmost directory, and the file is in a
7128 # subdir which does not have a Makefile, then we distribute it
7129 # here.
7131 # If a required file is above the source tree, it is important
7132 # to prefix it with `$(srcdir)' so that no VPATH search is
7133 # performed. Otherwise problems occur with Make implementations
7134 # that rewrite and simplify rules whose dependencies are found in a
7135 # VPATH location. Here is an example with OSF1/Tru64 Make.
7136 #
7137 # % cat Makefile
7138 # VPATH = sub
7139 # distdir: ../a
7140 # echo ../a
7141 # % ls
7142 # Makefile a
7143 # % make
7144 # echo a
7145 # a
7146 #
7147 # Dependency `../a' was found in `sub/../a', but this make
7148 # implementation simplified it as `a'. (Note that the sub/
7149 # directory does not even exist.)
7150 #
7151 # This kind of VPATH rewriting seems hard to cancel. The
7152 # distdir.am hack against VPATH rewriting works only when no
7153 # simplification is done, i.e., for dependencies which are in
7154 # subdirectories, not in enclosing directories. Hence, in
7155 # the latter case we use a full path to make sure no VPATH
7156 # search occurs.
7157 $fullfile = '$(srcdir)/' . $fullfile
7158 if $dir =~ m,^\.\.(?:$|/),;
7160 push_dist_common ($fullfile);
7161 return 1;
7162 }
7163 return 0;
7164 }
7167 # If a file name appears as a key in this hash, then it has already
7168 # been checked for. This allows us not to report the same error more
7169 # than once.
7170 my %required_file_not_found = ();
7172 # &require_file_internal ($WHERE, $MYSTRICT, $DIRECTORY, @FILES)
7173 # --------------------------------------------------------------
7174 # Verify that the file must exist in $DIRECTORY, or install it.
7175 # $MYSTRICT is the strictness level at which this file becomes required.
7176 sub require_file_internal ($$$@)
7177 {
7178 my ($where, $mystrict, $dir, @files) = @_;
7180 foreach my $file (@files)
7181 {
7182 my $fullfile = "$dir/$file";
7183 my $found_it = 0;
7184 my $dangling_sym = 0;
7186 if (-l $fullfile && ! -f $fullfile)
7187 {
7188 $dangling_sym = 1;
7189 }
7190 elsif (dir_has_case_matching_file ($dir, $file))
7191 {
7192 $found_it = 1;
7193 maybe_push_required_file ($dir, $file, $fullfile);
7194 }
7196 # `--force-missing' only has an effect if `--add-missing' is
7197 # specified.
7198 if ($found_it && (! $add_missing || ! $force_missing))
7199 {
7200 next;
7201 }
7202 else
7203 {
7204 # If we've already looked for it, we're done. You might
7205 # wonder why we don't do this before searching for the
7206 # file. If we do that, then something like
7207 # AC_OUTPUT(subdir/foo foo) will fail to put foo.in into
7208 # DIST_COMMON.
7209 if (! $found_it)
7210 {
7211 next if defined $required_file_not_found{$fullfile};
7212 $required_file_not_found{$fullfile} = 1;
7213 }
7215 if ($strictness >= $mystrict)
7216 {
7217 if ($dangling_sym && $add_missing)
7218 {
7219 unlink ($fullfile);
7220 }
7222 my $trailer = '';
7223 my $suppress = 0;
7225 # Only install missing files according to our desired
7226 # strictness level.
7227 my $message = "required file `$fullfile' not found";
7228 if ($add_missing)
7229 {
7230 if (-f "$libdir/$file")
7231 {
7232 $suppress = 1;
7234 # Install the missing file. Symlink if we
7235 # can, copy if we must. Note: delete the file
7236 # first, in case it is a dangling symlink.
7237 $message = "installing `$fullfile'";
7238 # Windows Perl will hang if we try to delete a
7239 # file that doesn't exist.
7240 unlink ($fullfile) if -f $fullfile;
7241 if ($symlink_exists && ! $copy_missing)
7242 {
7243 if (! symlink ("$libdir/$file", $fullfile))
7244 {
7245 $suppress = 0;
7246 $trailer = "; error while making link: $!";
7247 }
7248 }
7249 elsif (system ('cp', "$libdir/$file", $fullfile))
7250 {
7251 $suppress = 0;
7252 $trailer = "\n error while copying";
7253 }
7254 reset_dir_cache ($dir);
7255 }
7257 if (! maybe_push_required_file (dirname ($fullfile),
7258 $file, $fullfile))
7259 {
7260 if (! $found_it && ! $automake_will_process_aux_dir)
7261 {
7262 # We have added the file but could not push it
7263 # into DIST_COMMON, probably because this is
7264 # an auxiliary file and we are not processing
7265 # the top level Makefile. Furthermore Automake
7266 # hasn't been asked to create the Makefile.in
7267 # that distribute the aux dir files.
7268 error ($where, 'Please make a full run of automake'
7269 . " so $fullfile gets distributed.");
7270 }
7271 }
7272 }
7273 else
7274 {
7275 $trailer = "\n `automake --add-missing' can install `$file'"
7276 if -f "$libdir/$file";
7277 }
7279 # If --force-missing was specified, and we have
7280 # actually found the file, then do nothing.
7281 next
7282 if $found_it && $force_missing;
7284 # If we couldn't install the file, but it is a target in
7285 # the Makefile, don't print anything. This allows files
7286 # like README, AUTHORS, or THANKS to be generated.
7287 next
7288 if !$suppress && rule $file;
7290 msg ($suppress ? 'note' : 'error', $where, "$message$trailer");
7291 }
7292 }
7293 }
7294 }
7296 # &require_file ($WHERE, $MYSTRICT, @FILES)
7297 # -----------------------------------------
7298 sub require_file ($$@)
7299 {
7300 my ($where, $mystrict, @files) = @_;
7301 require_file_internal ($where, $mystrict, $relative_dir, @files);
7302 }
7304 # &require_file_with_macro ($COND, $MACRO, $MYSTRICT, @FILES)
7305 # -----------------------------------------------------------
7306 sub require_file_with_macro ($$$@)
7307 {
7308 my ($cond, $macro, $mystrict, @files) = @_;
7309 $macro = rvar ($macro) unless ref $macro;
7310 require_file ($macro->rdef ($cond)->location, $mystrict, @files);
7311 }
7313 # &require_libsource_with_macro ($COND, $MACRO, $MYSTRICT, @FILES)
7314 # ----------------------------------------------------------------
7315 # Require an AC_LIBSOURCEd file. If AC_CONFIG_LIBOBJ_DIR was called, it
7316 # must be in that directory. Otherwise expect it in the current directory.
7317 sub require_libsource_with_macro ($$$@)
7318 {
7319 my ($cond, $macro, $mystrict, @files) = @_;
7320 $macro = rvar ($macro) unless ref $macro;
7321 if ($config_libobj_dir)
7322 {
7323 require_file_internal ($macro->rdef ($cond)->location, $mystrict,
7324 $config_libobj_dir, @files);
7325 }
7326 else
7327 {
7328 require_file ($macro->rdef ($cond)->location, $mystrict, @files);
7329 }
7330 }
7332 # &require_conf_file ($WHERE, $MYSTRICT, @FILES)
7333 # ----------------------------------------------
7334 # Looks in configuration path, as specified by AC_CONFIG_AUX_DIR.
7335 sub require_conf_file ($$@)
7336 {
7337 my ($where, $mystrict, @files) = @_;
7338 require_file_internal ($where, $mystrict, $config_aux_dir, @files);
7339 }
7342 # &require_conf_file_with_macro ($COND, $MACRO, $MYSTRICT, @FILES)
7343 # ----------------------------------------------------------------
7344 sub require_conf_file_with_macro ($$$@)
7345 {
7346 my ($cond, $macro, $mystrict, @files) = @_;
7347 require_conf_file (rvar ($macro)->rdef ($cond)->location,
7348 $mystrict, @files);
7349 }
7351 ################################################################
7353 # &require_build_directory ($DIRECTORY)
7354 # ------------------------------------
7355 # Emit rules to create $DIRECTORY if needed, and return
7356 # the file that any target requiring this directory should be made
7357 # dependent upon.
7358 # We don't want to emit the rule twice, and want to reuse it
7359 # for directories with equivalent names (e.g., `foo/bar' and `./foo//bar').
7360 sub require_build_directory ($)
7361 {
7362 my $directory = shift;
7364 return $directory_map{$directory} if exists $directory_map{$directory};
7366 my $cdir = File::Spec->canonpath ($directory);
7368 if (exists $directory_map{$cdir})
7369 {
7370 my $stamp = $directory_map{$cdir};
7371 $directory_map{$directory} = $stamp;
7372 return $stamp;
7373 }
7375 my $dirstamp = "$cdir/\$(am__dirstamp)";
7377 $directory_map{$directory} = $dirstamp;
7378 $directory_map{$cdir} = $dirstamp;
7380 # Set a variable for the dirstamp basename.
7381 define_pretty_variable ('am__dirstamp', TRUE, INTERNAL,
7382 '$(am__leading_dot)dirstamp');
7384 # Directory must be removed by `make distclean'.
7385 $clean_files{$dirstamp} = DIST_CLEAN;
7387 $output_rules .= ("$dirstamp:\n"
7388 . "\t\@\$(MKDIR_P) $directory\n"
7389 . "\t\@: > $dirstamp\n");
7391 return $dirstamp;
7392 }
7394 # &require_build_directory_maybe ($FILE)
7395 # --------------------------------------
7396 # If $FILE lies in a subdirectory, emit a rule to create this
7397 # directory and return the file that $FILE should be made
7398 # dependent upon. Otherwise, just return the empty string.
7399 sub require_build_directory_maybe ($)
7400 {
7401 my $file = shift;
7402 my $directory = dirname ($file);
7404 if ($directory ne '.')
7405 {
7406 return require_build_directory ($directory);
7407 }
7408 else
7409 {
7410 return '';
7411 }
7412 }
7414 ################################################################
7416 # Push a list of files onto dist_common.
7417 sub push_dist_common
7418 {
7419 prog_error "push_dist_common run after handle_dist"
7420 if $handle_dist_run;
7421 Automake::Variable::define ('DIST_COMMON', VAR_AUTOMAKE, '+', TRUE, "@_",
7422 '', INTERNAL, VAR_PRETTY);
7423 }
7426 ################################################################
7428 # generate_makefile ($MAKEFILE_AM, $MAKEFILE_IN)
7429 # ----------------------------------------------
7430 # Generate a Makefile.in given the name of the corresponding Makefile and
7431 # the name of the file output by config.status.
7432 sub generate_makefile ($$)
7433 {
7434 my ($makefile_am, $makefile_in) = @_;
7436 # Reset all the Makefile.am related variables.
7437 initialize_per_input;
7439 # AUTOMAKE_OPTIONS can contains -W flags to disable or enable
7440 # warnings for this file. So hold any warning issued before
7441 # we have processed AUTOMAKE_OPTIONS.
7442 buffer_messages ('warning');
7444 # Name of input file ("Makefile.am") and output file
7445 # ("Makefile.in"). These have no directory components.
7446 $am_file_name = basename ($makefile_am);
7447 $in_file_name = basename ($makefile_in);
7449 # $OUTPUT is encoded. If it contains a ":" then the first element
7450 # is the real output file, and all remaining elements are input
7451 # files. We don't scan or otherwise deal with these input files,
7452 # other than to mark them as dependencies. See
7453 # &scan_autoconf_files for details.
7454 my ($makefile, @inputs) = split (/:/, $output_files{$makefile_in});
7456 $relative_dir = dirname ($makefile);
7457 $am_relative_dir = dirname ($makefile_am);
7458 $topsrcdir = backname ($relative_dir);
7460 read_main_am_file ($makefile_am);
7461 if (handle_options)
7462 {
7463 # Process buffered warnings.
7464 flush_messages;
7465 # Fatal error. Just return, so we can continue with next file.
7466 return;
7467 }
7468 # Process buffered warnings.
7469 flush_messages;
7471 # There are a few install-related variables that you should not define.
7472 foreach my $var ('PRE_INSTALL', 'POST_INSTALL', 'NORMAL_INSTALL')
7473 {
7474 my $v = var $var;
7475 if ($v)
7476 {
7477 my $def = $v->def (TRUE);
7478 prog_error "$var not defined in condition TRUE"
7479 unless $def;
7480 reject_var $var, "`$var' should not be defined"
7481 if $def->owner != VAR_AUTOMAKE;
7482 }
7483 }
7485 # Catch some obsolete variables.
7486 msg_var ('obsolete', 'INCLUDES',
7487 "`INCLUDES' is the old name for `AM_CPPFLAGS' (or `*_CPPFLAGS')")
7488 if var ('INCLUDES');
7490 # Must do this after reading .am file.
7491 define_variable ('subdir', $relative_dir, INTERNAL);
7493 # If DIST_SUBDIRS is defined, make sure SUBDIRS is, so that
7494 # recursive rules are enabled.
7495 define_pretty_variable ('SUBDIRS', TRUE, INTERNAL, '')
7496 if var 'DIST_SUBDIRS' && ! var 'SUBDIRS';
7498 # Check first, because we might modify some state.
7499 check_cygnus;
7500 check_gnu_standards;
7501 check_gnits_standards;
7503 handle_configure ($makefile_am, $makefile_in, $makefile, @inputs);
7504 handle_gettext;
7505 handle_libraries;
7506 handle_ltlibraries;
7507 handle_programs;
7508 handle_scripts;
7510 # These must be run after all the sources are scanned. They
7511 # use variables defined by &handle_libraries, &handle_ltlibraries,
7512 # or &handle_programs.
7513 handle_compile;
7514 handle_languages;
7515 handle_libtool;
7517 # Variables used by distdir.am and tags.am.
7518 define_pretty_variable ('SOURCES', TRUE, INTERNAL, @sources);
7519 if (! option 'no-dist')
7520 {
7521 define_pretty_variable ('DIST_SOURCES', TRUE, INTERNAL, @dist_sources);
7522 }
7524 handle_multilib;
7525 handle_texinfo;
7526 handle_emacs_lisp;
7527 handle_python;
7528 handle_java;
7529 handle_man_pages;
7530 handle_data;
7531 handle_headers;
7532 handle_subdirs;
7533 handle_tags;
7534 handle_minor_options;
7535 # Must come after handle_programs so that %known_programs is up-to-date.
7536 handle_tests;
7538 # This must come after most other rules.
7539 handle_dist;
7541 handle_footer;
7542 do_check_merge_target;
7543 handle_all ($makefile);
7545 # FIXME: Gross!
7546 if (var ('lib_LTLIBRARIES') && var ('bin_PROGRAMS'))
7547 {
7548 $output_rules .= "install-binPROGRAMS: install-libLTLIBRARIES\n\n";
7549 }
7551 handle_install;
7552 handle_clean ($makefile);
7553 handle_factored_dependencies;
7555 # Comes last, because all the above procedures may have
7556 # defined or overridden variables.
7557 $output_vars .= output_variables;
7559 check_typos;
7561 my ($out_file) = $output_directory . '/' . $makefile_in;
7563 if ($exit_code != 0)
7564 {
7565 verb "not writing $out_file because of earlier errors";
7566 return;
7567 }
7569 if (! -d ($output_directory . '/' . $am_relative_dir))
7570 {
7571 mkdir ($output_directory . '/' . $am_relative_dir, 0755);
7572 }
7574 # We make sure that `all:' is the first target.
7575 my $output =
7576 "$output_vars$output_all$output_header$output_rules$output_trailer";
7578 # Decide whether we must update the output file or not.
7579 # We have to update in the following situations.
7580 # * $force_generation is set.
7581 # * any of the output dependencies is younger than the output
7582 # * the contents of the output is different (this can happen
7583 # if the project has been populated with a file listed in
7584 # @common_files since the last run).
7585 # Output's dependencies are split in two sets:
7586 # * dependencies which are also configure dependencies
7587 # These do not change between each Makefile.am
7588 # * other dependencies, specific to the Makefile.am being processed
7589 # (such as the Makefile.am itself, or any Makefile fragment
7590 # it includes).
7591 my $timestamp = mtime $out_file;
7592 if (! $force_generation
7593 && $configure_deps_greatest_timestamp < $timestamp
7594 && $output_deps_greatest_timestamp < $timestamp
7595 && $output eq contents ($out_file))
7596 {
7597 verb "$out_file unchanged";
7598 # No need to update.
7599 return;
7600 }
7602 if (-e $out_file)
7603 {
7604 unlink ($out_file)
7605 or fatal "cannot remove $out_file: $!\n";
7606 }
7608 my $gm_file = new Automake::XFile "> $out_file";
7609 verb "creating $out_file";
7610 print $gm_file $output;
7611 }
7613 ################################################################
7618 ################################################################
7620 # Print usage information.
7621 sub usage ()
7622 {
7623 print "Usage: $0 [OPTION] ... [Makefile]...
7625 Generate Makefile.in for configure from Makefile.am.
7627 Operation modes:
7628 --help print this help, then exit
7629 --version print version number, then exit
7630 -v, --verbose verbosely list files processed
7631 --no-force only update Makefile.in's that are out of date
7632 -W, --warnings=CATEGORY report the warnings falling in CATEGORY
7634 Dependency tracking:
7635 -i, --ignore-deps disable dependency tracking code
7636 --include-deps enable dependency tracking code
7638 Flavors:
7639 --cygnus assume program is part of Cygnus-style tree
7640 --foreign set strictness to foreign
7641 --gnits set strictness to gnits
7642 --gnu set strictness to gnu
7644 Library files:
7645 -a, --add-missing add missing standard files to package
7646 --libdir=DIR directory storing library files
7647 -c, --copy with -a, copy missing files (default is symlink)
7648 -f, --force-missing force update of standard files
7650 ";
7651 Automake::ChannelDefs::usage;
7653 my ($last, @lcomm);
7654 $last = '';
7655 foreach my $iter (sort ((@common_files, @common_sometimes)))
7656 {
7657 push (@lcomm, $iter) unless $iter eq $last;
7658 $last = $iter;
7659 }
7661 my @four;
7662 print "\nFiles which are automatically distributed, if found:\n";
7663 format USAGE_FORMAT =
7664 @<<<<<<<<<<<<<<<< @<<<<<<<<<<<<<<<< @<<<<<<<<<<<<<<<< @<<<<<<<<<<<<<<<<
7665 $four[0], $four[1], $four[2], $four[3]
7666 .
7667 $~ = "USAGE_FORMAT";
7669 my $cols = 4;
7670 my $rows = int(@lcomm / $cols);
7671 my $rest = @lcomm % $cols;
7673 if ($rest)
7674 {
7675 $rows++;
7676 }
7677 else
7678 {
7679 $rest = $cols;
7680 }
7682 for (my $y = 0; $y < $rows; $y++)
7683 {
7684 @four = ("", "", "", "");
7685 for (my $x = 0; $x < $cols; $x++)
7686 {
7687 last if $y + 1 == $rows && $x == $rest;
7689 my $idx = (($x > $rest)
7690 ? ($rows * $rest + ($rows - 1) * ($x - $rest))
7691 : ($rows * $x));
7693 $idx += $y;
7694 $four[$x] = $lcomm[$idx];
7695 }
7696 write;
7697 }
7699 print "\nReport bugs to <bug-automake\@gnu.org>.\n";
7701 # --help always returns 0 per GNU standards.
7702 exit 0;
7703 }
7706 # &version ()
7707 # -----------
7708 # Print version information
7709 sub version ()
7710 {
7711 print <<EOF;
7712 automake (GNU $PACKAGE) $VERSION
7713 Copyright (C) 2007 Free Software Foundation, Inc.
7714 License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html>
7715 This is free software: you are free to change and redistribute it.
7716 There is NO WARRANTY, to the extent permitted by law.
7718 Written by Tom Tromey <tromey\@redhat.com>
7719 and Alexandre Duret-Lutz <adl\@gnu.org>.
7720 EOF
7721 # --version always returns 0 per GNU standards.
7722 exit 0;
7723 }
7725 ################################################################
7727 # Parse command line.
7728 sub parse_arguments ()
7729 {
7730 # Start off as gnu.
7731 set_strictness ('gnu');
7733 my $cli_where = new Automake::Location;
7734 my %cli_options =
7735 (
7736 'libdir=s' => \$libdir,
7737 'gnu' => sub { set_strictness ('gnu'); },
7738 'gnits' => sub { set_strictness ('gnits'); },
7739 'cygnus' => sub { set_global_option ('cygnus', $cli_where); },
7740 'foreign' => sub { set_strictness ('foreign'); },
7741 'include-deps' => sub { unset_global_option ('no-dependencies'); },
7742 'i|ignore-deps' => sub { set_global_option ('no-dependencies',
7743 $cli_where); },
7744 'no-force' => sub { $force_generation = 0; },
7745 'f|force-missing' => \$force_missing,
7746 'o|output-dir=s' => \$output_directory,
7747 'a|add-missing' => \$add_missing,
7748 'c|copy' => \$copy_missing,
7749 'v|verbose' => sub { setup_channel 'verb', silent => 0; },
7750 'W|warnings=s' => \&parse_warnings,
7751 # These long options (--Werror and --Wno-error) for backward
7752 # compatibility. Use -Werror and -Wno-error today.
7753 'Werror' => sub { parse_warnings 'W', 'error'; },
7754 'Wno-error' => sub { parse_warnings 'W', 'no-error'; },
7755 );
7756 use Getopt::Long;
7757 Getopt::Long::config ("bundling", "pass_through");
7759 # See if --version or --help is used. We want to process these before
7760 # anything else because the GNU Coding Standards require us to
7761 # `exit 0' after processing these options, and we can't guarantee this
7762 # if we treat other options first. (Handling other options first
7763 # could produce error diagnostics, and in this condition it is
7764 # confusing if Automake does `exit 0'.)
7765 my %cli_options_1st_pass =
7766 (
7767 'version' => \&version,
7768 'help' => \&usage,
7769 # Recognize all other options (and their arguments) but do nothing.
7770 map { $_ => sub {} } (keys %cli_options)
7771 );
7772 my @ARGV_backup = @ARGV;
7773 Getopt::Long::GetOptions %cli_options_1st_pass
7774 or exit 1;
7775 @ARGV = @ARGV_backup;
7777 # Now *really* process the options. This time we know that --help
7778 # and --version are not present, but we specify them nonetheless so
7779 # that ambiguous abbreviation are diagnosed.
7780 Getopt::Long::GetOptions %cli_options, 'version' => sub {}, 'help' => sub {}
7781 or exit 1;
7783 if (defined $output_directory)
7784 {
7785 msg 'obsolete', "`--output-dir' is deprecated\n";
7786 }
7787 else
7788 {
7789 # In the next release we'll remove this entirely.
7790 $output_directory = '.';
7791 }
7793 return unless @ARGV;
7795 if ($ARGV[0] =~ /^-./)
7796 {
7797 my %argopts;
7798 for my $k (keys %cli_options)
7799 {
7800 if ($k =~ /(.*)=s$/)
7801 {
7802 map { $argopts{(length ($_) == 1)
7803 ? "-$_" : "--$_" } = 1; } (split (/\|/, $1));
7804 }
7805 }
7806 if ($ARGV[0] eq '--')
7807 {
7808 shift @ARGV;
7809 }
7810 elsif (exists $argopts{$ARGV[0]})
7811 {
7812 fatal ("option `$ARGV[0]' requires an argument\n"
7813 . "Try `$0 --help' for more information.");
7814 }
7815 else
7816 {
7817 fatal ("unrecognized option `$ARGV[0]'.\n"
7818 . "Try `$0 --help' for more information.");
7819 }
7820 }
7822 my $errspec = 0;
7823 foreach my $arg (@ARGV)
7824 {
7825 fatal ("empty argument\nTry `$0 --help' for more information.")
7826 if ($arg eq '');
7828 # Handle $local:$input syntax.
7829 my ($local, @rest) = split (/:/, $arg);
7830 @rest = ("$local.in",) unless @rest;
7831 my $input = locate_am @rest;
7832 if ($input)
7833 {
7834 push @input_files, $input;
7835 $output_files{$input} = join (':', ($local, @rest));
7836 }
7837 else
7838 {
7839 error "no Automake input file found for `$arg'";
7840 $errspec = 1;
7841 }
7842 }
7843 fatal "no input file found among supplied arguments"
7844 if $errspec && ! @input_files;
7845 }
7847 ################################################################
7849 # Parse the WARNINGS environment variable.
7850 parse_WARNINGS;
7852 # Parse command line.
7853 parse_arguments;
7855 $configure_ac = require_configure_ac;
7857 # Do configure.ac scan only once.
7858 scan_autoconf_files;
7860 if (! @input_files)
7861 {
7862 my $msg = '';
7863 $msg = "\nDid you forget AC_CONFIG_FILES([Makefile]) in $configure_ac?"
7864 if -f 'Makefile.am';
7865 fatal ("no `Makefile.am' found for any configure output$msg");
7866 }
7868 # Now do all the work on each file.
7869 foreach my $file (@input_files)
7870 {
7871 ($am_file = $file) =~ s/\.in$//;
7872 if (! -f ($am_file . '.am'))
7873 {
7874 error "`$am_file.am' does not exist";
7875 }
7876 else
7877 {
7878 # Any warning setting now local to this Makefile.am.
7879 dup_channel_setup;
7881 generate_makefile ($am_file . '.am', $file);
7883 # Back out any warning setting.
7884 drop_channel_setup;
7885 }
7886 }
7888 exit $exit_code;
7891 ### Setup "GNU" style for perl-mode and cperl-mode.
7892 ## Local Variables:
7893 ## perl-indent-level: 2
7894 ## perl-continued-statement-offset: 2
7895 ## perl-continued-brace-offset: 0
7896 ## perl-brace-offset: 0
7897 ## perl-brace-imaginary-offset: 0
7898 ## perl-label-offset: -2
7899 ## cperl-indent-level: 2
7900 ## cperl-brace-offset: 0
7901 ## cperl-continued-brace-offset: 0
7902 ## cperl-label-offset: -2
7903 ## cperl-extra-newline-before-brace: t
7904 ## cperl-merge-trailing-else: nil
7905 ## cperl-continued-statement-offset: 2
7906 ## End: