| blob | 6e5ef45f194d944a99bfd85c28c8bc44c036f6dd |
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 # Free Software Foundation, Inc.
12 # This program is free software; you can redistribute it and/or modify
13 # it under the terms of the GNU General Public License as published by
14 # the Free Software Foundation; either version 2, or (at your option)
15 # any later version.
17 # This program is distributed in the hope that it will be useful,
18 # but WITHOUT ANY WARRANTY; without even the implied warranty of
19 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
20 # GNU General Public License for more details.
22 # You should have received a copy of the GNU General Public License
23 # along with this program; if not, write to the Free Software
24 # Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
25 # 02111-1307, USA.
27 # Originally written by David Mackenzie <djm@gnu.ai.mit.edu>.
28 # Perl reimplementation by Tom Tromey <tromey@redhat.com>.
30 package Language;
32 BEGIN
33 {
34 my $prefix = "@prefix@";
35 my $perllibdir = $ENV{'perllibdir'} || "@datadir@/@PACKAGE@-@APIVERSION@";
36 unshift @INC, "$perllibdir";
37 }
39 use Automake::Struct;
40 struct (# Short name of the language (c, f77...).
41 'name' => "\$",
42 # Nice name of the language (C, Fortran 77...).
43 'Name' => "\$",
45 # List of configure variables which must be defined.
46 'config_vars' => '@',
48 'ansi' => "\$",
49 # `pure' is `1' or `'. A `pure' language is one where, if
50 # all the files in a directory are of that language, then we
51 # do not require the C compiler or any code to call it.
52 'pure' => "\$",
54 'autodep' => "\$",
56 # Name of the compiling variable (COMPILE).
57 'compiler' => "\$",
58 # Content of the compiling variable.
59 'compile' => "\$",
60 # Flag to require compilation without linking (-c).
61 'compile_flag' => "\$",
62 'extensions' => '@',
63 'flags' => "\$",
64 # Should the flag be defined as a configure variable.
65 # Defaults to true. FIXME: this should go away once
66 # we move to autoconf tracing.
67 'define_flag' => "\$",
69 # The file to use when generating rules for this language.
70 # The default is 'depend2'.
71 'rule_file' => "\$",
73 # Name of the linking variable (LINK).
74 'linker' => "\$",
75 # Content of the linking variable.
76 'link' => "\$",
78 # Name of the linker variable (LD).
79 'lder' => "\$",
80 # Content of the linker variable ($(CC)).
81 'ld' => "\$",
83 # Flag to specify the output file (-o).
84 'output_flag' => "\$",
85 '_finish' => "\$",
87 # This is a subroutine which is called whenever we finally
88 # determine the context in which a source file will be
89 # compiled.
90 '_target_hook' => "\$");
93 sub finish ($)
94 {
95 my ($self) = @_;
96 if (defined $self->_finish)
97 {
98 &{$self->_finish} ();
99 }
100 }
102 sub target_hook ($$$$)
103 {
104 my ($self) = @_;
105 if (defined $self->_target_hook)
106 {
107 &{$self->_target_hook} (@_);
108 }
109 }
111 package Automake;
113 use strict 'vars', 'subs';
114 use Automake::General;
115 use Automake::XFile;
116 use File::Basename;
117 use Carp;
119 ## ----------- ##
120 ## Constants. ##
121 ## ----------- ##
123 # Parameters set by configure. Not to be changed. NOTE: assign
124 # VERSION as string so that eg version 0.30 will print correctly.
125 my $VERSION = "@VERSION@";
126 my $PACKAGE = "@PACKAGE@";
127 my $prefix = "@prefix@";
128 my $libdir = "@datadir@/@PACKAGE@-@APIVERSION@";
130 # String constants.
131 my $IGNORE_PATTERN = '^\s*##([^#\n].*)?\n';
132 my $WHITE_PATTERN = '^\s*$';
133 my $COMMENT_PATTERN = '^#';
134 my $TARGET_PATTERN='[$a-zA-Z_.@][-.a-zA-Z0-9_(){}/$+@]*';
135 # A rule has three parts: a list of targets, a list of dependencies,
136 # and optionally actions.
137 my $RULE_PATTERN =
138 "^($TARGET_PATTERN(?:(?:\\\\\n|\\s)+$TARGET_PATTERN)*) *:([^=].*|)\$";
140 my $SUFFIX_RULE_PATTERN = '^(\.[a-zA-Z0-9_(){}$+@]+)(\.[a-zA-Z0-9_(){}$+@]+)$';
141 # Only recognize leading spaces, not leading tabs. If we recognize
142 # leading tabs here then we need to make the reader smarter, because
143 # otherwise it will think rules like `foo=bar; \' are errors.
144 my $MACRO_PATTERN = '^[A-Za-z0-9_@]+$';
145 my $ASSIGNMENT_PATTERN = '^ *([^ \t=:+]*)\s*([:+]?)=\s*(.*)$';
146 # This pattern recognizes a Gnits version id and sets $1 if the
147 # release is an alpha release. We also allow a suffix which can be
148 # used to extend the version number with a "fork" identifier.
149 my $GNITS_VERSION_PATTERN = '\d+\.\d+([a-z]|\.\d+)?(-[A-Za-z0-9]+)?';
150 my $IF_PATTERN = '^if\s+(!?)\s*([A-Za-z][A-Za-z0-9_]*)\s*(?:#.*)?$';
151 my $ELSE_PATTERN = '^else(?:\s+(!?)\s*([A-Za-z][A-Za-z0-9_]*))?\s*(?:#.*)?$';
152 my $ENDIF_PATTERN = '^endif(?:\s+(!?)\s*([A-Za-z][A-Za-z0-9_]*))?\s*(?:#.*)?$';
153 my $PATH_PATTERN='(\w|[/.-])+';
154 # This will pass through anything not of the prescribed form.
155 my $INCLUDE_PATTERN = ('^include\s+'
156 . '((\$\(top_srcdir\)/' . $PATH_PATTERN . ')'
157 . '|(\$\(srcdir\)/' . $PATH_PATTERN . ')'
158 . '|([^/\$]' . $PATH_PATTERN. '))\s*(#.*)?$');
160 # Some regular expressions. One reason to put them here is that it
161 # makes indentation work better in Emacs.
162 my $AC_CONFIG_AUX_DIR_PATTERN = 'AC_CONFIG_AUX_DIR\(([^)]+)\)';
163 my $AM_INIT_AUTOMAKE_PATTERN = 'AM_INIT_AUTOMAKE\([^,]*,([^,)]+)[,)]';
164 my $AC_INIT_PATTERN = 'AC_INIT\([^,]*,([^,)]+)[,)]';
165 my $AM_PACKAGE_VERSION_PATTERN = '^\s*\[?([^]\s]+)\]?\s*$';
167 # This handles substitution references like ${foo:.a=.b}.
168 my $SUBST_REF_PATTERN = "^([^:]*):([^=]*)=(.*)\$";
170 # Note that there is no AC_PATH_TOOL. But we don't really care.
171 my $AC_CHECK_PATTERN = 'AC_(CHECK|PATH)_(PROG|PROGS|TOOL)\(\[?(\w+)';
172 my $AM_MISSING_PATTERN = 'AM_MISSING_PROG\(\[?(\w+)';
173 # Just check for alphanumeric in AC_SUBST. If you do AC_SUBST(5),
174 # then too bad.
175 my $AC_SUBST_PATTERN = 'AC_SUBST\(\[?(\w+)';
176 my $AM_CONDITIONAL_PATTERN = 'AM_CONDITIONAL\(\[?(\w+)';
177 # Match `-d' as a command-line argument in a string.
178 my $DASH_D_PATTERN = "(^|\\s)-d(\\s|\$)";
179 # Directories installed during 'install-exec' phase.
180 my $EXEC_DIR_PATTERN =
181 '^(?:bin|sbin|libexec|sysconf|localstate|lib|pkglib|.*exec.*)$'; #'
183 # Constants to define the "strictness" level.
184 use constant FOREIGN => 0;
185 use constant GNU => 1;
186 use constant GNITS => 2;
188 # Values for AC_CANONICAL_*
189 use constant AC_CANONICAL_HOST => 1;
190 use constant AC_CANONICAL_SYSTEM => 2;
192 # Values indicating when something should be cleaned. Right now we
193 # only need to handle `mostly'- and `dist'-clean; add more as
194 # required.
195 use constant MOSTLY_CLEAN => 0;
196 use constant DIST_CLEAN => 1;
198 # Libtool files.
199 my @libtool_files = qw(ltmain.sh config.guess config.sub);
200 # ltconfig appears here for compatibility with old versions of libtool.
201 my @libtool_sometimes = qw(ltconfig ltcf-c.sh ltcf-cxx.sh ltcf-gcj.sh);
203 # Commonly found files we look for and automatically include in
204 # DISTFILES.
205 my @common_files =
206 (qw(ABOUT-GNU ABOUT-NLS AUTHORS BACKLOG COPYING COPYING.DOC COPYING.LIB
207 ChangeLog INSTALL NEWS README THANKS TODO acinclude.m4
208 ansi2knr.1 ansi2knr.c compile config.guess config.rpath config.sub
209 configure configure.ac configure.in depcomp elisp-comp
210 install-sh libversion.in mdate-sh missing mkinstalldirs
211 py-compile texinfo.tex ylwrap),
212 @libtool_files, @libtool_sometimes);
214 # Commonly used files we auto-include, but only sometimes.
215 my @common_sometimes =
216 qw(aclocal.m4 acconfig.h config.h.top config.h.bot stamp-vti);
218 # Standard directories from the GNU Coding Standards, and additional
219 # pkg* directories from Automake. Stored in a hash for fast member check.
220 my %standard_prefix =
221 map { $_ => 1 } (qw(bin data exec include info lib libexec lisp
222 localstate man man1 man2 man3 man4 man5 man6
223 man7 man8 man9 oldinclude pkgdatadir
224 pkgincludedir pkglibdir sbin sharedstate
225 sysconf));
227 # Copyright on generated Makefile.ins.
228 my $gen_copyright = "\
229 # Copyright 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002
230 # Free Software Foundation, Inc.
231 # This Makefile.in is free software; the Free Software Foundation
232 # gives unlimited permission to copy and/or distribute it,
233 # with or without modifications, as long as this notice is preserved.
235 # This program is distributed in the hope that it will be useful,
236 # but WITHOUT ANY WARRANTY, to the extent permitted by law; without
237 # even the implied warranty of MERCHANTABILITY or FITNESS FOR A
238 # PARTICULAR PURPOSE.
239 ";
241 # These constants are returned by lang_*_rewrite functions.
242 # LANG_SUBDIR means that the resulting object file should be in a
243 # subdir if the source file is. In this case the file name cannot
244 # have `..' components.
245 my $LANG_IGNORE = 0;
246 my $LANG_PROCESS = 1;
247 my $LANG_SUBDIR = 2;
249 # These are used when keeping track of whether an object can be built
250 # by two different paths.
251 my $COMPILE_LIBTOOL = 1;
252 my $COMPILE_ORDINARY = 2;
254 # Map from obsolete macros to hints for new macros.
255 # If you change this, change the corresponding list in aclocal.in.
256 # FIXME: should just put this into a single file.
257 my %obsolete_macros =
258 (
259 'AC_FEATURE_CTYPE' => "use `AC_HEADER_STDC'",
260 'AC_FEATURE_ERRNO' => "add `strerror' to `AC_REPLACE_FUNCS(...)'",
261 'AC_FEATURE_EXIT' => '',
262 'AC_SYSTEM_HEADER' => '',
264 # Note that we do not handle this one, because it is still run
265 # from AM_CONFIG_HEADER. So we deal with it specially in
266 # &scan_autoconf_files.
267 # 'AC_CONFIG_HEADER' => "use `AM_CONFIG_HEADER'",
269 'fp_C_PROTOTYPES' => "use `AM_C_PROTOTYPES'",
270 'fp_PROG_CC_STDC' => "use `AM_PROG_CC_STDC'",
271 'fp_PROG_INSTALL' => "use `AC_PROG_INSTALL'",
272 'fp_WITH_DMALLOC' => "use `AM_WITH_DMALLOC'",
273 'fp_WITH_REGEX' => "use `AM_WITH_REGEX'",
274 'gm_PROG_LIBTOOL' => "use `AM_PROG_LIBTOOL'",
275 'jm_MAINTAINER_MODE' => "use `AM_MAINTAINER_MODE'",
276 'md_TYPE_PTRDIFF_T' => "add `ptrdiff_t' to `AC_CHECK_TYPES(...)'",
277 'ud_PATH_LISPDIR' => "use `AM_PATH_LISPDIR'",
278 'ud_GNU_GETTEXT' => "use `AM_GNU_GETTEXT'",
280 # Now part of autoconf proper, under a different name.
281 'fp_FUNC_FNMATCH' => "use `AC_FUNC_FNMATCH'",
282 'AM_SANITY_CHECK_CC' => "automatically done by `AC_PROG_CC'",
283 'AM_PROG_INSTALL' => "use `AC_PROG_INSTALL'",
284 'AM_EXEEXT' => "automatically done by `AC_PROG_(CC|CXX|F77)'",
285 'AM_CYGWIN32' => "use `AC_CYGWIN'",
286 'AM_MINGW32' => "use `AC_MINGW32'",
287 'AM_FUNC_MKTIME' => "use `AC_FUNC_MKTIME'",
288 );
290 # Regexp to match the above macros.
291 my $obsolete_rx = '\b(' . join ('|', keys %obsolete_macros) . ')\b';
292 \f
295 ## ---------------------------------- ##
296 ## Variables related to the options. ##
297 ## ---------------------------------- ##
299 # TRUE if we should always generate Makefile.in.
300 my $force_generation = 1;
302 # Strictness level as set on command line.
303 my $default_strictness = GNU;
305 # Name of strictness level, as set on command line.
306 my $default_strictness_name = 'gnu';
308 # This is TRUE if automatic dependency generation code should be
309 # included in generated Makefile.in.
310 my $cmdline_use_dependencies = 1;
312 # This holds our (eventual) exit status. We don't actually exit until
313 # we have processed all input files.
314 my $exit_status = 0;
316 # From the Perl manual.
317 my $symlink_exists = (eval 'symlink ("", "");', $@ eq '');
319 # TRUE if missing standard files should be installed.
320 my $add_missing = 0;
322 # TRUE if we should copy missing files; otherwise symlink if possible.
323 my $copy_missing = 0;
325 # TRUE if we should always update files that we know about.
326 my $force_missing = 0;
329 ## ---------------------------------------- ##
330 ## Variables filled during files scanning. ##
331 ## ---------------------------------------- ##
333 # Name of the top autoconf input: `configure.ac' or `configure.in'.
334 my $configure_ac = '';
336 # Files found by scanning configure.ac for LIBOBJS.
337 my %libsources = ();
339 # True if AM_C_PROTOTYPES appears in configure.ac.
340 my $am_c_prototypes = 0;
342 # Names used in AC_CONFIG_HEADER call.
343 my @config_headers = ();
344 # Where AC_CONFIG_HEADER appears.
345 my $config_header_location;
347 # Directory where output files go. Actually, output files are
348 # relative to this directory.
349 my $output_directory;
351 # List of Makefile.am's to process, and their corresponding outputs.
352 my @input_files = ();
353 my %output_files = ();
355 # Complete list of Makefile.am's that exist.
356 my @configure_input_files = ();
358 # List of files in AC_CONFIG_FILES/AC_OUTPUT without Makefile.am's,
359 # and their outputs.
360 my @other_input_files = ();
361 # Where the last AC_CONFIG_FILES/AC_OUTPUT appears.
362 my $ac_config_files_location;
364 # List of directories to search for configure-required files. This
365 # can be set by AC_CONFIG_AUX_DIR.
366 my @config_aux_path = qw(. .. ../..);
367 my $config_aux_dir = '';
368 my $config_aux_dir_set_in_configure_in = 0;
370 # Whether AM_GNU_GETTEXT has been seen in configure.ac.
371 my $seen_gettext = 0;
372 # Whether AM_GNU_GETTEXT([external]) is used.
373 my $seen_gettext_external = 0;
374 # Where AM_GNU_GETTEXT appears.
375 my $ac_gettext_location;
377 # TRUE if AC_PROG_LEX or AM_PROG_LEX were seen.
378 my $seen_prog_lex = 0;
380 # TRUE if we've seen AC_CANONICAL_(HOST|SYSTEM).
381 my $seen_canonical = 0;
382 my $canonical_location;
384 # Where AC_PROG_LIBTOOL appears.
385 my $seen_libtool;
387 # Where AM_MAINTAINER_MODE appears.
388 my $seen_maint_mode;
390 # Actual version we've seen.
391 my $package_version = '';
393 # Where version is defined.
394 my $package_version_location;
396 # Where AM_PATH_LISPDIR appears.
397 my $am_lispdir_location;
399 # Where AM_PATH_PYTHON appears.
400 my $pythondir_location;
402 # TRUE if we've seen AC_ENABLE_MULTILIB.
403 my $seen_multilib = 0;
405 # TRUE if we've seen AM_PROG_CC_C_O
406 my $seen_cc_c_o = 0;
408 # Where AM_INIT_AUTOMAKE is called;
409 my $seen_init_automake = 0;
411 # TRUE if we've seen AM_AUTOMAKE_VERSION.
412 my $seen_automake_version = 0;
414 # Hash table of discovered configure substitutions. Keys are names,
415 # values are `FILE:LINE' strings which are used by error message
416 # generation.
417 my %configure_vars = ();
419 # This is used to keep track of which variable definitions we are
420 # scanning. It is only used in certain limited ways, but it has to be
421 # global. It is declared just for documentation purposes.
422 my %vars_scanned = ();
424 # TRUE if --cygnus seen.
425 my $cygnus_mode = 0;
427 # Hash table of AM_CONDITIONAL variables seen in configure.
428 my %configure_cond = ();
430 # This maps extensions onto language names.
431 my %extension_map = ();
433 # List of the DIST_COMMON files we discovered while reading
434 # configure.in
435 my $configure_dist_common = '';
437 # This maps languages names onto objects.
438 my %languages = ();
440 # List of targets we must always output.
441 # FIXME: Complete, and remove falsely required targets.
442 my %required_targets =
443 (
444 'all' => 1,
445 'dvi' => 1,
446 'info' => 1,
447 'install-info' => 1,
448 'install' => 1,
449 'install-data' => 1,
450 'install-exec' => 1,
451 'uninstall' => 1,
453 # FIXME: Not required, temporary hacks.
454 # Well, actually they are sort of required: the -recursive
455 # targets will run them anyway...
456 'dvi-am' => 1,
457 'info-am' => 1,
458 'install-data-am' => 1,
459 'install-exec-am' => 1,
460 'installcheck-am' => 1,
461 'uninstall-am' => 1,
463 'install-man' => 1,
464 );
466 # This is set to 1 when Automake needs to be run again.
467 # (For instance, this happens when an auxiliary file such as
468 # depcomp is added after the toplevel Makefile.in -- which
469 # should distribute depcomp -- has been generated.)
470 my $automake_needs_to_reprocess_all_files = 0;
472 # Options set via AM_INIT_AUTOMAKE.
473 my $global_options = '';
475 # If a file name appears as a key in this hash, then it has already
476 # been checked for. This variable is local to the "require file"
477 # functions.
478 my %require_file_found = ();
479 \f
481 ################################################################
483 ## ------------------------------------------ ##
484 ## Variables reset by &initialize_per_input. ##
485 ## ------------------------------------------ ##
487 # Basename and relative dir of the input file.
488 my $am_file_name;
489 my $am_relative_dir;
491 # Same but wrt Makefile.in.
492 my $in_file_name;
493 my $relative_dir;
495 # These two variables are used when generating each Makefile.in.
496 # They hold the Makefile.in until it is ready to be printed.
497 my $output_rules;
498 my $output_vars;
499 my $output_trailer;
500 my $output_all;
501 my $output_header;
503 # Suffixes found during a run.
504 my @suffixes;
506 # Handling the variables.
507 #
508 # For a $VAR:
509 # - $var_value{$VAR}{$COND} is its value associated to $COND,
510 # - $var_location{$VAR} is where it was defined,
511 # - $var_comment{$VAR} are the comments associated to it.
512 # - $var_type{$VAR} is how it has been defined (`', `+', or `:'),
513 # - $var_is_am{$VAR} is true if the variable is owned by Automake.
514 my %var_value;
515 my %var_location;
516 my %var_comment;
517 my %var_type;
518 my %var_is_am;
520 # This holds a 1 if a particular variable was examined.
521 my %content_seen;
523 # This holds the names which are targets. These also appear in
524 # %contents.
525 my %targets;
527 # Same as %VAR_VALUE, but for targets.
528 my %target_conditional;
530 # This is the conditional stack.
531 my @cond_stack;
533 # This holds the set of included files.
534 my @include_stack;
536 # This holds a list of directories which we must create at `dist'
537 # time. This is used in some strange scenarios involving weird
538 # AC_OUTPUT commands.
539 my %dist_dirs;
541 # List of dependencies for the obvious targets.
542 my @all;
543 my @check;
544 my @check_tests;
546 # Holds the dependencies of targets which dependencies are factored.
547 # Typically, `.PHONY' will appear in plenty of *.am files, but must
548 # be output once. Arguably all pure dependencies could be subject
549 # to this factorization, but it is not unpleasant to have paragraphs
550 # in Makefile: keeping related stuff altogether.
551 my %dependencies;
553 # Holds the factored actions. Tied to %DEPENDENCIES, i.e., filled
554 # only when keys exists in %DEPENDENCIES.
555 my %actions;
557 # A list of files deleted by `maintainer-clean'.
558 my @maintainer_clean_files;
560 # Keys in this hash table are object files or other files in
561 # subdirectories which need to be removed. This only holds files
562 # which are created by compilations. The value in the hash indicates
563 # when the file should be removed.
564 my %compile_clean_files;
566 # Keys in this hash table are directories where we expect to build a
567 # libtool object. We use this information to decide what directories
568 # to delete.
569 my %libtool_clean_directories;
571 # Value of `$(SOURCES)', used by tags.am.
572 my @sources;
573 # Sources which go in the distribution.
574 my @dist_sources;
576 # This hash maps object file names onto their corresponding source
577 # file names. This is used to ensure that each object is created
578 # by a single source file.
579 my %object_map;
581 # This hash maps object file names onto an integer value representing
582 # whether this object has been built via ordinary compilation or
583 # libtool compilation (the COMPILE_* constants).
584 my %object_compilation_map;
587 # This keeps track of the directories for which we've already
588 # created `.dirstamp' code.
589 my %directory_map;
591 # All .P files.
592 my %dep_files;
594 # Strictness levels.
595 my $strictness;
596 my $strictness_name;
598 # Options from AUTOMAKE_OPTIONS.
599 my %options;
601 # Whether or not dependencies are handled. Can be further changed
602 # in handle_options.
603 my $use_dependencies;
605 # This is a list of all targets to run during "make dist".
606 my @dist_targets;
608 # Keys in this hash are the basenames of files which must depend on
609 # ansi2knr. Values are either the empty string, or the directory in
610 # which the ANSI source file appears; the directory must have a
611 # trailing `/'.
612 my %de_ansi_files;
614 # This maps the source extension of a suffix rule to its
615 # corresponding output extension.
616 # FIXME: because this hash maps one input extension to one output
617 # extension, Automake cannot handle two suffix rules with the same
618 # input extension.
619 my %suffix_rules;
621 # This is the name of the redirect `all' target to use.
622 my $all_target;
624 # This keeps track of which extensions we've seen (that we care
625 # about).
626 my %extension_seen;
628 # This is random scratch space for the language finish functions.
629 # Don't randomly overwrite it; examine other uses of keys first.
630 my %language_scratch;
632 # We keep track of which objects need special (per-executable)
633 # handling on a per-language basis.
634 my %lang_specific_files;
636 # This is set when `handle_dist' has finished. Once this happens,
637 # we should no longer push on dist_common.
638 my $handle_dist_run;
640 # Used to store a set of linkers needed to generate the sources currently
641 # under consideration.
642 my %linkers_used;
644 # True if we need `LINK' defined. This is a hack.
645 my $need_link;
647 # This is the list of such variables to output.
648 # FIXME: Might be useless actually.
649 my @var_list;
651 # Was get_object_extension run?
652 # FIXME: This is a hack. a better switch should be found.
653 my $get_object_extension_was_run;
655 # Contains a stack of `from' parts of variable substitutions currently in
656 # force.
657 my @substfroms;
659 # Contains a stack of `to' parts of variable substitutions currently in
660 # force.
661 my @substtos;
663 # This keeps track of all variables defined by subobjname.
664 # The value stored is the variable names.
665 # The key has the form "(COND1)VAL1(COND2)VAL2..." where VAL1 and VAL2
666 # are the values of the variable for condition COND1 and COND2.
667 my %subobjvar = ();
669 ## --------------------------------- ##
670 ## Forward subroutine declarations. ##
671 ## --------------------------------- ##
672 sub register_language (%);
673 sub file_contents_internal ($$%);
674 sub define_objects_from_sources ($$$$$$$);
677 # &initialize_per_input ()
678 # ------------------------
679 # (Re)-Initialize per-Makefile.am variables.
680 sub initialize_per_input ()
681 {
682 $am_file_name = '';
683 $am_relative_dir = '';
685 $in_file_name = '';
686 $relative_dir = '';
688 $output_rules = '';
689 $output_vars = '';
690 $output_trailer = '';
691 $output_all = '';
692 $output_header = '';
694 @suffixes = ();
696 %var_value = ();
697 %var_location = ();
698 %var_comment = ();
699 %var_type = ();
700 %var_is_am = ();
702 %content_seen = ();
704 %targets = ();
706 %target_conditional = ();
708 @cond_stack = ();
710 @include_stack = ();
712 %dist_dirs = ();
714 @all = ();
715 @check = ();
716 @check_tests = ();
718 %dependencies =
719 (
720 # Texinfoing.
721 'dvi' => [],
722 'dvi-am' => [],
723 'info' => [],
724 'info-am' => [],
726 # Installing/uninstalling.
727 'install-data-am' => [],
728 'install-exec-am' => [],
729 'uninstall-am' => [],
731 'install-man' => [],
732 'uninstall-man' => [],
734 'install-info' => [],
735 'install-info-am' => [],
736 'uninstall-info' => [],
738 'installcheck-am' => [],
740 # Cleaning.
741 'clean-am' => [],
742 'mostlyclean-am' => [],
743 'maintainer-clean-am' => [],
744 'distclean-am' => [],
745 'clean' => [],
746 'mostlyclean' => [],
747 'maintainer-clean' => [],
748 'distclean' => [],
750 # Tarballing.
751 'dist-all' => [],
753 # Phoning.
754 '.PHONY' => []
755 );
756 %actions = ();
758 @maintainer_clean_files = ();
760 @sources = ();
761 @dist_sources = ();
763 %object_map = ();
764 %object_compilation_map = ();
766 %directory_map = ();
768 %dep_files = ();
770 $strictness = $default_strictness;
771 $strictness_name = $default_strictness_name;
773 %options = ();
775 $use_dependencies = $cmdline_use_dependencies;
777 @dist_targets = ();
779 %de_ansi_files = ();
781 %suffix_rules = ();
783 $all_target = '';
785 %extension_seen = ();
787 %language_scratch = ();
789 %lang_specific_files = ();
791 $handle_dist_run = 0;
793 $need_link = 0;
795 @var_list = ();
797 $get_object_extension_was_run = 0;
799 %compile_clean_files = ();
801 # We always include `.'. This isn't strictly correct.
802 %libtool_clean_directories = ('.' => 1);
804 %subobjvar = ();
805 }
808 ################################################################
810 # Initialize our list of languages that are internally supported.
812 # C.
813 register_language ('name' => 'c',
814 'Name' => 'C',
815 'config_vars' => ['CC'],
816 'ansi' => 1,
817 'autodep' => '',
818 'flags' => 'CFLAGS',
819 'compiler' => 'COMPILE',
820 'compile' => '$(CC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS) $(CPPFLAGS) $(AM_CFLAGS) $(CFLAGS)',
821 'lder' => 'CCLD',
822 'ld' => '$(CC)',
823 'linker' => 'LINK',
824 'link' => '$(CCLD) $(AM_CFLAGS) $(CFLAGS) $(AM_LDFLAGS) $(LDFLAGS) -o $@',
825 'compile_flag' => '-c',
826 'extensions' => ['.c'],
827 '_finish' => \&lang_c_finish);
829 # C++.
830 register_language ('name' => 'cxx',
831 'Name' => 'C++',
832 'config_vars' => ['CXX'],
833 'linker' => 'CXXLINK',
834 'link' => '$(CXXLD) $(AM_CXXFLAGS) $(CXXFLAGS) $(AM_LDFLAGS) $(LDFLAGS) -o $@',
835 'autodep' => 'CXX',
836 'flags' => 'CXXFLAGS',
837 'compile' => '$(CXX) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS) $(CPPFLAGS) $(AM_CXXFLAGS) $(CXXFLAGS)',
838 'compiler' => 'CXXCOMPILE',
839 'compile_flag' => '-c',
840 'output_flag' => '-o',
841 'lder' => 'CXXLD',
842 'ld' => '$(CXX)',
843 'pure' => 1,
844 'extensions' => ['.c++', '.cc', '.cpp', '.cxx', '.C']);
846 # Objective C.
847 register_language ('name' => 'objc',
848 'Name' => 'Objective C',
849 'config_vars' => ['OBJC'],
850 'linker' => 'OBJCLINK',,
851 'link' => '$(OBJCLD) $(AM_OBJCFLAGS) $(OBJCFLAGS) $(AM_LDFLAGS) $(LDFLAGS) -o $@',
852 'autodep' => 'OBJC',
853 'flags' => 'OBJCFLAGS',
854 'compile' => '$(OBJC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS) $(CPPFLAGS) $(AM_OBJCFLAGS) $(OBJCFLAGS)',
855 'compiler' => 'OBJCCOMPILE',
856 'compile_flag' => '-c',
857 'output_flag' => '-o',
858 'lder' => 'OBJCLD',
859 'ld' => '$(OBJC)',
860 'pure' => 1,
861 'extensions' => ['.m']);
863 # Headers.
864 register_language ('name' => 'header',
865 'Name' => 'Header',
866 'extensions' => ['.h', '.H', '.hxx', '.h++', '.hh',
867 '.hpp', '.inc'],
868 # Nothing to do.
869 '_finish' => sub { });
871 # Yacc (C & C++).
872 register_language ('name' => 'yacc',
873 'Name' => 'Yacc',
874 'config_vars' => ['YACC'],
875 'flags' => 'YFLAGS',
876 'define_flag' => 0,
877 'compile' => '$(YACC) $(YFLAGS) $(AM_YFLAGS)',
878 'compiler' => 'YACCCOMPILE',
879 'extensions' => ['.y'],
880 'rule_file' => 'yacc',
881 '_finish' => \&lang_yacc_finish,
882 '_target_hook' => \&lang_yacc_target_hook);
883 register_language ('name' => 'yaccxx',
884 'Name' => 'Yacc (C++)',
885 'config_vars' => ['YACC'],
886 'rule_file' => 'yacc',
887 'flags' => 'YFLAGS',
888 'define_flag' => 0,
889 'compiler' => 'YACCCOMPILE',
890 'compile' => '$(YACC) $(YFLAGS) $(AM_YFLAGS)',
891 'extensions' => ['.y++', '.yy', '.yxx', '.ypp'],
892 '_finish' => \&lang_yacc_finish,
893 '_target_hook' => \&lang_yacc_target_hook);
895 # Lex (C & C++).
896 register_language ('name' => 'lex',
897 'Name' => 'Lex',
898 'config_vars' => ['LEX'],
899 'rule_file' => 'lex',
900 'flags' => 'LFLAGS',
901 'define_flag' => 0,
902 'compile' => '$(LEX) $(LFLAGS) $(AM_LFLAGS)',
903 'compiler' => 'LEXCOMPILE',
904 'extensions' => ['.l'],
905 '_finish' => \&lang_lex_finish,
906 '_target_hook' => \&lang_lex_target_hook);
907 register_language ('name' => 'lexxx',
908 'Name' => 'Lex (C++)',
909 'config_vars' => ['LEX'],
910 'rule_file' => 'lex',
911 'flags' => 'LFLAGS',
912 'define_flag' => 0,
913 'compile' => '$(LEX) $(LFLAGS) $(AM_LFLAGS)',
914 'compiler' => 'LEXCOMPILE',
915 'extensions' => ['.l++', '.ll', '.lxx', '.lpp'],
916 '_finish' => \&lang_lex_finish,
917 '_target_hook' => \&lang_lex_target_hook);
919 # Assembler.
920 register_language ('name' => 'asm',
921 'Name' => 'Assembler',
922 'config_vars' => ['CCAS', 'CCASFLAGS'],
924 'flags' => 'CCASFLAGS',
925 # Users can set AM_ASFLAGS to includes DEFS, INCLUDES,
926 # or anything else required. They can also set AS.
927 'compile' => '$(CCAS) $(AM_CCASFLAGS) $(CCASFLAGS)',
928 'compiler' => 'CCASCOMPILE',
929 'compile_flag' => '-c',
930 'extensions' => ['.s', '.S'],
932 # With assembly we still use the C linker.
933 '_finish' => \&lang_c_finish);
935 # Fortran 77
936 register_language ('name' => 'f77',
937 'Name' => 'Fortran 77',
938 'linker' => 'F77LINK',
939 'link' => '$(F77LD) $(AM_FFLAGS) $(FFLAGS) $(AM_LDFLAGS) $(LDFLAGS) -o $@',
940 'flags' => 'FFLAGS',
941 'compile' => '$(F77) $(AM_FFLAGS) $(FFLAGS)',
942 'compiler' => 'F77COMPILE',
943 'compile_flag' => '-c',
944 'output_flag' => '-o',
945 'lder' => 'F77LD',
946 'ld' => '$(F77)',
947 'pure' => 1,
948 'extensions' => ['.f', '.for', '.f90']);
950 # Preprocessed Fortran 77
951 #
952 # The current support for preprocessing Fortran 77 just involves
953 # passing `$(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS)
954 # $(CPPFLAGS)' as additional flags to the Fortran 77 compiler, since
955 # this is how GNU Make does it; see the `GNU Make Manual, Edition 0.51
956 # for `make' Version 3.76 Beta' (specifically, from info file
957 # `(make)Catalogue of Rules').
958 #
959 # A better approach would be to write an Autoconf test
960 # (i.e. AC_PROG_FPP) for a Fortran 77 preprocessor, because not all
961 # Fortran 77 compilers know how to do preprocessing. The Autoconf
962 # macro AC_PROG_FPP should test the Fortran 77 compiler first for
963 # preprocessing capabilities, and then fall back on cpp (if cpp were
964 # available).
965 register_language ('name' => 'ppf77',
966 'Name' => 'Preprocessed Fortran 77',
967 'config_vars' => ['F77'],
968 'linker' => 'F77LINK',
969 'link' => '$(F77LD) $(AM_FFLAGS) $(FFLAGS) $(AM_LDFLAGS) $(LDFLAGS) -o $@',
970 'lder' => 'F77LD',
971 'ld' => '$(F77)',
972 'flags' => 'FFLAGS',
973 'compiler' => 'PPF77COMPILE',
974 'compile' => '$(F77) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS) $(CPPFLAGS) $(AM_FFLAGS) $(FFLAGS)',
975 'compile_flag' => '-c',
976 'output_flag' => '-o',
977 'pure' => 1,
978 'extensions' => ['.F']);
980 # Ratfor.
981 register_language ('name' => 'ratfor',
982 'Name' => 'Ratfor',
983 'config_vars' => ['F77'],
984 'linker' => 'F77LINK',
985 'link' => '$(F77LD) $(AM_FFLAGS) $(FFLAGS) $(AM_LDFLAGS) $(LDFLAGS) -o $@',
986 'lder' => 'F77LD',
987 'ld' => '$(F77)',
988 'flags' => 'RFLAGS',
989 # FIXME also FFLAGS.
990 'compile' => '$(F77) $(AM_FFLAGS) $(FFLAGS) $(AM_RFLAGS) $(RFLAGS)',
991 'compiler' => 'RCOMPILE',
992 'compile_flag' => '-c',
993 'output_flag' => '-o',
994 'pure' => 1,
995 'extensions' => ['.r']);
997 # Java via gcj.
998 register_language ('name' => 'java',
999 'Name' => 'Java',
1000 'config_vars' => ['GCJ'],
1001 'linker' => 'GCJLINK',
1002 'link' => '$(GCJLD) $(AM_GCJFLAGS) $(GCJFLAGS) $(AM_LDFLAGS) $(LDFLAGS) -o $@',
1003 'autodep' => 'GCJ',
1004 'flags' => 'GCJFLAGS',
1005 'compile' => '$(GCJ) $(AM_GCJFLAGS) $(GCJFLAGS)',
1006 'compiler' => 'GCJCOMPILE',
1007 'compile_flag' => '-c',
1008 'output_flag' => '-o',
1009 'lder' => 'GCJLD',
1010 'ld' => '$(GCJ)',
1011 'pure' => 1,
1012 'extensions' => ['.java', '.class', '.zip', '.jar']);
1014 ################################################################
1016 # Parse command line.
1017 &parse_arguments;
1019 # Do configure.ac scan only once.
1020 &scan_autoconf_files;
1022 die "$me: no `Makefile.am' found or specified\n"
1023 if ! @input_files;
1025 my $automake_has_run = 0;
1027 do
1028 {
1029 if ($automake_has_run)
1030 {
1031 verbose "processing Makefiles another time to fix them up.\n";
1032 &prog_error ("running more than two times should never be needed.")
1033 if $automake_has_run >= 2;
1034 }
1035 $automake_needs_to_reprocess_all_files = 0;
1037 # Now do all the work on each file.
1038 # This guy must be local otherwise it's private to the loop.
1039 use vars '$am_file';
1040 local $am_file;
1041 foreach $am_file (@input_files)
1042 {
1043 if (! -f ($am_file . '.am'))
1044 {
1045 &am_error ("`" . $am_file . ".am' does not exist");
1046 }
1047 else
1048 {
1049 &generate_makefile ($output_files{$am_file}, $am_file);
1050 }
1051 }
1052 ++$automake_has_run;
1053 }
1054 while ($automake_needs_to_reprocess_all_files);
1056 exit $exit_status;
1058 ################################################################
1060 # prog_error (@PRINT-ME)
1061 # ----------------------
1062 # Signal a programming error, display PRINT-ME, and exit 1.
1063 sub prog_error (@)
1064 {
1065 print STDERR "$me: programming error: @_\n";
1066 exit 1;
1067 }
1070 # subst ($TEXT)
1071 # -------------
1072 # Return a configure-style substitution using the indicated text.
1073 # We do this to avoid having the substitutions directly in automake.in;
1074 # when we do that they are sometimes removed and this causes confusion
1075 # and bugs.
1076 sub subst ($)
1077 {
1078 my ($text) = @_;
1079 return '@' . $text . '@';
1080 }
1082 ################################################################
1085 # $BACKPATH
1086 # &backname ($REL-DIR)
1087 # --------------------
1088 # If I `cd $REL-DIR', then to come back, I should `cd $BACKPATH'.
1089 # For instance `src/foo' => `../..'.
1090 # Works with non strictly increasing paths, i.e., `src/../lib' => `..'.
1091 sub backname ($)
1092 {
1093 my ($file) = @_;
1094 my @res;
1095 foreach (split (/\//, $file))
1096 {
1097 next if $_ eq '.' || $_ eq '';
1098 if ($_ eq '..')
1099 {
1100 pop @res;
1101 }
1102 else
1103 {
1104 push (@res, '..');
1105 }
1106 }
1107 return join ('/', @res) || '.';
1108 }
1110 ################################################################
1112 # Pattern that matches all know input extensions (i.e. extensions used
1113 # by the languages supported by Automake). Using this pattern
1114 # (instead of `\..*$') to match extensions allows Automake to support
1115 # dot-less extensions.
1116 my $KNOWN_EXTENSIONS_PATTERN = "";
1117 my @known_extensions_list = ();
1119 # accept_extensions (@EXTS)
1120 # -------------------------
1121 # Update $KNOWN_EXTENSIONS_PATTERN to recognize the extensions
1122 # listed @EXTS. Extensions should contain a dot if needed.
1123 sub accept_extensions (@)
1124 {
1125 push @known_extensions_list, @_;
1126 $KNOWN_EXTENSIONS_PATTERN =
1127 '(?:' . join ('|', map (quotemeta, @known_extensions_list)) . ')';
1128 }
1130 # var_SUFFIXES_trigger ($TYPE, $VALUE)
1131 # ------------------------------------
1132 # This is called automagically by define_macro() when SUFFIXES
1133 # is defined ($TYPE eq '') or appended ($TYPE eq '+').
1134 # The work here needs to be performed as a side-effect of the
1135 # define_macro() call because SUFFIXES definitions impact
1136 # on $KNOWN_EXTENSIONS_PATTERN, and $KNOWN_EXTENSIONS_PATTERN
1137 # are used when parsing the input am file.
1138 sub var_SUFFIXES_trigger ($$)
1139 {
1140 my ($type, $value) = @_;
1141 accept_extensions (split (' ', $value));
1142 }
1144 ################################################################
1146 # Parse command line.
1147 sub parse_arguments ()
1148 {
1149 # Start off as gnu.
1150 &set_strictness ('gnu');
1152 use Getopt::Long;
1153 Getopt::Long::config ("bundling", "pass_through");
1154 Getopt::Long::GetOptions
1155 (
1156 'version' => \&version,
1157 'help' => \&usage,
1158 'libdir:s' => \$libdir,
1159 'gnu' => sub { &set_strictness ('gnu'); },
1160 'gnits' => sub { &set_strictness ('gnits'); },
1161 'cygnus' => \$cygnus_mode,
1162 'foreign' => sub { &set_strictness ('foreign'); },
1163 'include-deps' => sub { $cmdline_use_dependencies = 1; },
1164 'i|ignore-deps' => sub { $cmdline_use_dependencies = 0; },
1165 'no-force' => sub { $force_generation = 0; },
1166 'f|force-missing'=> \$force_missing,
1167 'o|output-dir:s' => \$output_directory,
1168 'a|add-missing' => \$add_missing,
1169 'c|copy' => \$copy_missing,
1170 'v|verbose' => \$verbose,
1171 'Werror' => sub { $SIG{"__WARN__"} = sub { die $_[0] } },
1172 'Wno-error' => sub { $SIG{"__WARN__"} = 'DEFAULT' }
1173 )
1174 or exit 1;
1176 if (defined $output_directory)
1177 {
1178 print STDERR "$0: `--output-dir' is deprecated\n";
1179 }
1180 else
1181 {
1182 # In the next release we'll remove this entirely.
1183 $output_directory = '.';
1184 }
1186 foreach my $arg (@ARGV)
1187 {
1188 if ($arg =~ /^-./)
1189 {
1190 print STDERR "$0: unrecognized option `$arg'\n";
1191 print STDERR "Try `$0 --help' for more information.\n";
1192 exit (1);
1193 }
1195 # Handle $local:$input syntax. Note that we only examine the
1196 # first ":" file to see if it is automake input; the rest are
1197 # just taken verbatim. We still keep all the files around for
1198 # dependency checking, however.
1199 my ($local, $input, @rest) = split (/:/, $arg);
1200 if (! $input)
1201 {
1202 $input = $local;
1203 }
1204 else
1205 {
1206 # Strip .in; later on .am is tacked on. That is how the
1207 # automake input file is found. Maybe not the best way, but
1208 # it is easy to explain.
1209 $input =~ s/\.in$//
1210 or die "$me: invalid input file name `$arg'\n.";
1211 }
1212 push (@input_files, $input);
1213 $output_files{$input} = join (':', ($local, @rest));
1214 }
1216 # Take global strictness from whatever we currently have set.
1217 $default_strictness = $strictness;
1218 $default_strictness_name = $strictness_name;
1219 }
1221 ################################################################
1223 # Generate a Makefile.in given the name of the corresponding Makefile and
1224 # the name of the file output by config.status.
1225 sub generate_makefile
1226 {
1227 my ($output, $makefile) = @_;
1229 # Reset all the Makefile.am related variables.
1230 &initialize_per_input;
1232 # Name of input file ("Makefile.am") and output file
1233 # ("Makefile.in"). These have no directory components.
1234 $am_file_name = basename ($makefile) . '.am';
1235 $in_file_name = basename ($makefile) . '.in';
1237 # $OUTPUT is encoded. If it contains a ":" then the first element
1238 # is the real output file, and all remaining elements are input
1239 # files. We don't scan or otherwise deal with these input file,
1240 # other than to mark them as dependencies. See
1241 # &scan_autoconf_files for details.
1242 my (@secondary_inputs);
1243 ($output, @secondary_inputs) = split (/:/, $output);
1245 $relative_dir = dirname ($output);
1246 $am_relative_dir = dirname ($makefile);
1248 &read_main_am_file ($makefile . '.am');
1249 if (&handle_options)
1250 {
1251 # Fatal error. Just return, so we can continue with next file.
1252 return;
1253 }
1255 # There are a few install-related variables that you should not define.
1256 foreach my $var ('PRE_INSTALL', 'POST_INSTALL', 'NORMAL_INSTALL')
1257 {
1258 if (variable_defined ($var) && !$var_is_am{$var})
1259 {
1260 macro_error ($var, "`$var' should not be defined");
1261 }
1262 }
1264 # At the toplevel directory, we might need config.guess, config.sub
1265 # or libtool scripts (ltconfig and ltmain.sh).
1266 if ($relative_dir eq '.')
1267 {
1268 # AC_CANONICAL_HOST and AC_CANONICAL_SYSTEM need config.guess and
1269 # config.sub.
1270 require_conf_file ($canonical_location, FOREIGN,
1271 'config.guess', 'config.sub')
1272 if $seen_canonical;
1273 }
1275 # We still need Makefile.in here, because sometimes the `dist'
1276 # target doesn't re-run automake.
1277 if ($am_relative_dir eq $relative_dir)
1278 {
1279 # Only distribute the files if they are in the same subdir as
1280 # the generated makefile.
1281 &push_dist_common ($in_file_name, $am_file_name);
1282 }
1284 push (@sources, '$(SOURCES)')
1285 if variable_defined ('SOURCES');
1287 # Must do this after reading .am file. See read_main_am_file to
1288 # understand weird tricks we play there with variables.
1289 &define_variable ('subdir', $relative_dir);
1291 # Check first, because we might modify some state.
1292 &check_cygnus;
1293 &check_gnu_standards;
1294 &check_gnits_standards;
1296 &handle_configure ($output, $makefile, @secondary_inputs);
1297 &handle_gettext;
1298 &handle_libraries;
1299 &handle_ltlibraries;
1300 &handle_programs;
1301 &handle_scripts;
1303 # This must run first so that the ANSI2KNR definition is generated
1304 # before it is used by the _.c rules. We have to do this because
1305 # a variable which is used in a dependency must be defined before
1306 # the target, or else make won't properly see it.
1307 &handle_compile;
1308 # This must be run after all the sources are scanned.
1309 &handle_languages;
1311 # We have to run this after dealing with all the programs.
1312 &handle_libtool;
1314 # Re-init SOURCES. FIXME: other code shouldn't depend on this
1315 # (but currently does).
1316 macro_define ('SOURCES', 1, '', 'TRUE', "@sources", 'internal');
1317 define_pretty_variable ('DIST_SOURCES', '', @dist_sources);
1319 &handle_multilib;
1320 &handle_texinfo;
1321 &handle_emacs_lisp;
1322 &handle_python;
1323 &handle_java;
1324 &handle_man_pages;
1325 &handle_data;
1326 &handle_headers;
1327 &handle_subdirs;
1328 &handle_tags;
1329 &handle_minor_options;
1330 &handle_tests;
1332 # This must come after most other rules.
1333 &handle_dist ($makefile);
1335 &handle_footer;
1336 &do_check_merge_target;
1337 &handle_all ($output);
1339 # FIXME: Gross!
1340 if (variable_defined ('lib_LTLIBRARIES') &&
1341 variable_defined ('bin_PROGRAMS'))
1342 {
1343 $output_rules .= "install-binPROGRAMS: install-libLTLIBRARIES\n\n";
1344 }
1346 &handle_installdirs;
1347 &handle_clean;
1348 &handle_factored_dependencies;
1350 check_typos ();
1352 if (! -d ($output_directory . '/' . $am_relative_dir))
1353 {
1354 mkdir ($output_directory . '/' . $am_relative_dir, 0755);
1355 }
1357 my ($out_file) = $output_directory . '/' . $makefile . ".in";
1358 if (! $force_generation && -e $out_file)
1359 {
1360 my ($am_time) = (stat ($makefile . '.am'))[9];
1361 my ($in_time) = (stat ($out_file))[9];
1362 # FIXME: should cache these times.
1363 my ($conf_time) = (stat ($configure_ac))[9];
1364 # FIXME: how to do unsigned comparison?
1365 if ($am_time < $in_time || $am_time < $conf_time)
1366 {
1367 # No need to update.
1368 return;
1369 }
1370 if (-f 'aclocal.m4')
1371 {
1372 my ($acl_time) = (stat _)[9];
1373 return if ($am_time < $acl_time);
1374 }
1375 }
1377 if (-e "$out_file")
1378 {
1379 unlink ($out_file)
1380 or die "$me: cannot remove $out_file: $!\n";
1381 }
1382 my $gm_file = new Automake::XFile "> $out_file";
1383 verbose "creating ", $makefile, ".in";
1385 print $gm_file $output_vars;
1386 # We make sure that `all:' is the first target.
1387 print $gm_file $output_all;
1388 print $gm_file $output_header;
1389 print $gm_file $output_rules;
1390 print $gm_file $output_trailer;
1391 }
1393 ################################################################
1395 # A version is a string that looks like
1396 # MAJOR.MINOR[.MICRO][ALPHA][-FORK]
1397 # where
1398 # MAJOR, MINOR, and MICRO are digits, ALPHA is a character, and
1399 # FORK any alphanumeric word.
1400 # Usually, ALPHA is used to label alpha releases or intermediate snapshots,
1401 # FORK is used for CVS branches or patched releases, and MICRO is used
1402 # for bug fixes releases on the MAJOR.MINOR branch.
1403 #
1404 # For the purpose of ordering, 1.4 is the same as 1.4.0, but 1.4g is
1405 # the same as 1.4.99g. The FORK identifier is ignored in the
1406 # ordering, except when it looks like -pMINOR[ALPHA]: some versions
1407 # were labelled like 1.4-p3a, this is the same as an alpha release
1408 # labelled 1.4.3a. Yes it's horrible, but Automake did not support
1409 # two-dot versions in the past.
1411 # version_split (VERSION)
1412 # -----------------------
1413 # Split a version string into the corresponding (MAJOR, MINOR, MICRO,
1414 # ALPHA, FORK) tuple. For instance "1.4g" would be split into
1415 # (1, 4, 99, 'g', '').
1416 # Return () on error.
1417 sub version_split ($)
1418 {
1419 my ($ver) = @_;
1421 # Special case for versions like 1.4-p2a.
1422 if ($ver =~ /^(\d+)\.(\d+)(?:-p(\d+)([a-z]+)?)$/)
1423 {
1424 return ($1, $2, $3, $4 || '', '');
1425 }
1426 # Common case.
1427 elsif ($ver =~ /^(\d+)\.(\d+)(?:\.(\d+))?([a-z])?(?:-([A-Za-z0-9]+))?$/)
1428 {
1429 return ($1, $2, $3 || (defined $4 ? 99 : 0), $4 || '', $5 || '');
1430 }
1431 return ();
1432 }
1434 # version_compare (\@LVERSION, \@RVERSION)
1435 # ----------------------------------------
1436 # Return 1 if LVERSION > RVERSION,
1437 # -1 if LVERSION < RVERSION,
1438 # 0 if LVERSION = RVERSION.
1439 sub version_compare (\@\@)
1440 {
1441 my @l = @{$_[0]};
1442 my @r = @{$_[1]};
1444 for my $i (0, 1, 2)
1445 {
1446 return 1 if ($l[$i] > $r[$i]);
1447 return -1 if ($l[$i] < $r[$i]);
1448 }
1449 for my $i (3, 4)
1450 {
1451 return 1 if ($l[$i] gt $r[$i]);
1452 return -1 if ($l[$i] lt $r[$i]);
1453 }
1454 return 0;
1455 }
1457 # Handles the logic of requiring a version number in AUTOMAKE_OPTIONS.
1458 # Return 0 if the required version is satisfied, 1 otherwise.
1459 sub version_check ($)
1460 {
1461 my ($required) = @_;
1462 my @version = version_split $VERSION;
1463 my @required = version_split $required;
1465 prog_error ("version is incorrect: $VERSION")
1466 if $#version == -1;
1468 # This should not happen, because process_option_list and split_version
1469 # use similar regexes.
1470 prog_error ("required version is incorrect: $required")
1471 if $#required == -1;
1473 # If we require 3.4n-foo then we require something
1474 # >= 3.4n, with the `foo' fork identifier.
1475 return 1
1476 if ($required[4] ne '' && $required[4] ne $version[4]);
1478 return 0 > version_compare @version, @required;
1479 }
1481 # $BOOL
1482 # process_option_list ($CONFIG, @OPTIONS)
1483 # ------------------------------
1484 # Process a list of options. Return 1 on error, 0 otherwise.
1485 # This is a helper for handle_options. CONFIG is true if we're
1486 # handling global options.
1487 sub process_option_list
1488 {
1489 my ($config, @list) = @_;
1490 foreach (@list)
1491 {
1492 $options{$_} = 1;
1493 if ($_ eq 'gnits' || $_ eq 'gnu' || $_ eq 'foreign')
1494 {
1495 &set_strictness ($_);
1496 }
1497 elsif ($_ eq 'cygnus')
1498 {
1499 $cygnus_mode = 1;
1500 }
1501 elsif (/^(.*\/)?ansi2knr$/)
1502 {
1503 # An option like "../lib/ansi2knr" is allowed. With no
1504 # path prefix, we assume the required programs are in this
1505 # directory. We save the actual option for later.
1506 $options{'ansi2knr'} = $_;
1507 }
1508 elsif ($_ eq 'no-installman' || $_ eq 'no-installinfo'
1509 || $_ eq 'dist-shar' || $_ eq 'dist-zip'
1510 || $_ eq 'dist-tarZ' || $_ eq 'dist-bzip2'
1511 || $_ eq 'dejagnu' || $_ eq 'no-texinfo.tex'
1512 || $_ eq 'readme-alpha' || $_ eq 'check-news'
1513 || $_ eq 'subdir-objects' || $_ eq 'nostdinc'
1514 || $_ eq 'no-exeext' || $_ eq 'no-define')
1515 {
1516 # Explicitly recognize these.
1517 }
1518 elsif ($_ eq 'no-dependencies')
1519 {
1520 $use_dependencies = 0;
1521 }
1522 elsif (/^\d+\.\d+(?:\.\d+)?[a-z]?(?:-[A-Za-z0-9]+)?$/)
1523 {
1524 # Got a version number.
1525 if (version_check $&)
1526 {
1527 if ($config)
1528 {
1529 file_error ($seen_init_automake,
1530 "require version $_, but have $VERSION");
1531 # Arrange to process this global option only once, otherwise
1532 # the error message would be printed for each Makefile.
1533 $global_options =~ s/(?:^| )$_(?: |$)/ /g;
1534 }
1535 else
1536 {
1537 macro_error ('AUTOMAKE_OPTIONS',
1538 "require version $_, but have $VERSION");
1539 }
1540 return 1;
1541 }
1542 }
1543 else
1544 {
1545 if ($config)
1546 {
1547 file_error ($seen_init_automake,
1548 "option `" . $_ . "\' not recognized");
1549 }
1550 else
1551 {
1552 macro_error ('AUTOMAKE_OPTIONS',
1553 "option `" . $_ . "\' not recognized");
1554 }
1555 return 1;
1556 }
1557 }
1558 }
1560 # Handle AUTOMAKE_OPTIONS variable. Return 1 on error, 0 otherwise.
1561 sub handle_options
1562 {
1563 # Process global options first so that more specific options can
1564 # override.
1565 if (&process_option_list (1, split (' ', $global_options)))
1566 {
1567 return 1;
1568 }
1570 if (variable_defined ('AUTOMAKE_OPTIONS'))
1571 {
1572 if (&process_option_list (0, &variable_value_as_list_recursive ('AUTOMAKE_OPTIONS', '')))
1573 {
1574 return 1;
1575 }
1576 }
1578 if ($strictness == GNITS)
1579 {
1580 $options{'readme-alpha'} = 1;
1581 $options{'check-news'} = 1;
1582 }
1584 return 0;
1585 }
1588 # get_object_extension ($OUT)
1589 # ---------------------------
1590 # Return object extension. Just once, put some code into the output.
1591 # OUT is the name of the output file
1592 sub get_object_extension
1593 {
1594 my ($out) = @_;
1596 # Maybe require libtool library object files.
1597 my $extension = '.$(OBJEXT)';
1598 $extension = '.lo' if ($out =~ /\.la$/);
1600 # Check for automatic de-ANSI-fication.
1601 $extension = '$U' . $extension
1602 if defined $options{'ansi2knr'};
1604 $get_object_extension_was_run = 1;
1606 return $extension;
1607 }
1610 # Call finish function for each language that was used.
1611 sub handle_languages
1612 {
1613 if ($use_dependencies)
1614 {
1615 # Include auto-dep code. Don't include it if DEP_FILES would
1616 # be empty.
1617 if (&saw_sources_p (0) && keys %dep_files)
1618 {
1619 # Set location of depcomp.
1620 &define_variable ('depcomp', "\$(SHELL) $config_aux_dir/depcomp");
1621 &define_variable ('am__depfiles_maybe', 'depfiles');
1623 require_conf_file ("$am_file.am", FOREIGN, 'depcomp');
1625 my @deplist = sort keys %dep_files;
1627 # We define this as a conditional variable because BSD
1628 # make can't handle backslashes for continuing comments on
1629 # the following line.
1630 define_pretty_variable ('DEP_FILES', 'AMDEP_TRUE', @deplist);
1632 # Generate each `include' individually. Irix 6 make will
1633 # not properly include several files resulting from a
1634 # variable expansion; generating many separate includes
1635 # seems safest.
1636 $output_rules .= "\n";
1637 foreach my $iter (@deplist)
1638 {
1639 $output_rules .= (subst ('AMDEP_TRUE')
1640 . subst ('am__include')
1641 . ' '
1642 . subst ('am__quote')
1643 . $iter
1644 . subst ('am__quote')
1645 . "\n");
1646 }
1648 # Compute the set of directories to remove in distclean-depend.
1649 my @depdirs = uniq (map { dirname ($_) } @deplist);
1650 $output_rules .= &file_contents ('depend',
1651 DEPDIRS => "@depdirs");
1652 }
1653 }
1654 else
1655 {
1656 &define_variable ('depcomp', '');
1657 &define_variable ('am__depfiles_maybe', '');
1658 }
1660 my %done;
1662 # Is the c linker needed?
1663 my $needs_c = 0;
1664 foreach my $ext (sort keys %extension_seen)
1665 {
1666 next unless $extension_map{$ext};
1668 my $lang = $languages{$extension_map{$ext}};
1670 my $rule_file = $lang->rule_file || 'depend2';
1672 # Get information on $LANG.
1673 my $pfx = $lang->autodep;
1674 my $fpfx = ($pfx eq '') ? 'CC' : $pfx;
1676 my $AMDEP = (($use_dependencies && $lang->autodep ne 'no')
1677 ? 'AMDEP' : 'FALSE');
1679 my %transform = ('EXT' => $ext,
1680 'PFX' => $pfx,
1681 'FPFX' => $fpfx,
1682 'LIBTOOL' => defined $seen_libtool,
1683 'AMDEP' => $AMDEP,
1684 '-c' => $lang->compile_flag || '',
1685 'MORE-THAN-ONE'
1686 => (count_files_for_language ($lang->name) > 1));
1688 # Generate the appropriate rules for this extension.
1689 if (($use_dependencies && $lang->autodep ne 'no')
1690 || defined $lang->compile)
1691 {
1692 # Some C compilers don't support -c -o. Use it only if really
1693 # needed.
1694 my $output_flag = $lang->output_flag || '';
1695 $output_flag = '-o'
1696 if (! $output_flag
1697 && $lang->flags eq 'CFLAGS'
1698 && defined $options{'subdir-objects'});
1700 # FIXME: this is a temporary hack to compute a possible
1701 # derived extension. This is not used by depend2.am.
1702 (my $der_ext = $ext) =~ tr/yl/cc/;
1704 # Another yacc/lex hack.
1705 my $destfile = '$*' . $der_ext;
1707 $output_rules .=
1708 file_contents ($rule_file,
1709 %transform,
1710 'GENERIC' => 1,
1712 'DERIVED-EXT' => $der_ext,
1714 # In this situation we know that the
1715 # object is in this directory, so
1716 # $(DEPDIR) is the correct location for
1717 # dependencies.
1718 'DEPBASE' => '$(DEPDIR)/$*',
1719 'BASE' => '$*',
1720 'SOURCE' => '$<',
1721 'OBJ' => '$@',
1722 'OBJOBJ' => '$@',
1723 'LTOBJ' => '$@',
1725 'COMPILE' => '$(' . $lang->compiler . ')',
1726 'LTCOMPILE' => '$(LT' . $lang->compiler . ')',
1727 '-o' => $output_flag);
1728 }
1730 # Now include code for each specially handled object with this
1731 # language.
1732 my %seen_files = ();
1733 foreach my $file (@{$lang_specific_files{$lang->name}})
1734 {
1735 my ($derived, $source, $obj, $myext) = split (' ', $file);
1737 # For any specially-generated object, we must respect the
1738 # ansi2knr setting so that we don't inadvertently try to
1739 # use the default rule.
1740 if ($lang->ansi && defined $options{'ansi2knr'})
1741 {
1742 $myext = '$U' . $myext;
1743 }
1745 # We might see a given object twice, for instance if it is
1746 # used under different conditions.
1747 next if defined $seen_files{$obj};
1748 $seen_files{$obj} = 1;
1750 my $flags = $lang->flags || '';
1751 my $val = "${derived}_${flags}";
1753 prog_error ("found $lang->name in handle_languages, but compiler not defined")
1754 unless defined $lang->compile;
1756 (my $obj_compile = $lang->compile) =~ s/\(AM_$flags/\($val/;
1757 my $obj_ltcompile = '$(LIBTOOL) --mode=compile ' . $obj_compile;
1759 # We _need_ `-o' for per object rules.
1760 my $output_flag = $lang->output_flag || '-o';
1762 my $depbase = dirname ($obj);
1763 $depbase = ''
1764 if $depbase eq '.';
1765 $depbase .= '/'
1766 unless $depbase eq '';
1767 $depbase .= '$(DEPDIR)/' . basename ($obj);
1769 # Generate a transform which will turn suffix targets in
1770 # depend2.am into real targets for the particular objects we
1771 # are building.
1772 $output_rules .=
1773 file_contents ($rule_file,
1774 (%transform,
1775 'GENERIC' => 0,
1777 'DEPBASE' => $depbase,
1778 'BASE' => $obj,
1779 'SOURCE' => $source,
1780 # Use $myext and not `.o' here, in case
1781 # we are actually building a new source
1782 # file -- e.g. via yacc.
1783 'OBJ' => "$obj$myext",
1784 'OBJOBJ' => "$obj.obj",
1785 'LTOBJ' => "$obj.lo",
1787 'COMPILE' => $obj_compile,
1788 'LTCOMPILE' => $obj_ltcompile,
1789 '-o' => $output_flag));
1790 }
1792 # The rest of the loop is done once per language.
1793 next if defined $done{$lang};
1794 $done{$lang} = 1;
1796 # Load the language dependent Makefile chunks.
1797 my %lang = map { uc ($_) => 0 } keys %languages;
1798 $lang{uc ($lang->name)} = 1;
1799 $output_rules .= file_contents ('lang-compile', %transform, %lang);
1801 # If the source to a program consists entirely of code from a
1802 # `pure' language, for instance C++ for Fortran 77, then we
1803 # don't need the C compiler code. However if we run into
1804 # something unusual then we do generate the C code. There are
1805 # probably corner cases here that do not work properly.
1806 # People linking Java code to Fortran code deserve pain.
1807 $needs_c ||= ! $lang->pure;
1809 define_compiler_variable ($lang)
1810 if ($lang->compile);
1812 define_linker_variable ($lang)
1813 if ($lang->link);
1815 foreach my $var (@{$lang->config_vars})
1816 {
1817 am_error ($lang->Name
1818 . " source seen but `$var' not defined in"
1819 . " `$configure_ac'")
1820 if !exists $configure_vars{$var};
1821 }
1823 # The compiler's flag must be a configure variable.
1824 define_configure_variable ($lang->flags)
1825 if defined $lang->flags && $lang->define_flag;
1827 # Call the finisher.
1828 $lang->finish;
1829 }
1831 # If the project is entirely C++ or entirely Fortran 77 (i.e., 1
1832 # suffix rule was learned), don't bother with the C stuff. But if
1833 # anything else creeps in, then use it.
1834 $needs_c = 1
1835 if $need_link || scalar keys %suffix_rules > 1;
1837 if ($needs_c)
1838 {
1839 if (! defined $done{$languages{'c'}})
1840 {
1841 &define_configure_variable ($languages{'c'}->flags);
1842 &define_compiler_variable ($languages{'c'});
1843 }
1844 define_linker_variable ($languages{'c'});
1845 }
1846 }
1848 # Check to make sure a source defined in LIBOBJS is not explicitly
1849 # mentioned. This is a separate function (as opposed to being inlined
1850 # in handle_source_transform) because it isn't always appropriate to
1851 # do this check.
1852 sub check_libobjs_sources
1853 {
1854 my ($one_file, $unxformed) = @_;
1856 foreach my $prefix ('', 'EXTRA_', 'dist_', 'nodist_',
1857 'dist_EXTRA_', 'nodist_EXTRA_')
1858 {
1859 my @files;
1860 if (variable_defined ($prefix . $one_file . '_SOURCES'))
1861 {
1862 @files = &variable_value_as_list_recursive (
1863 ($prefix . $one_file . '_SOURCES'),
1864 'all');
1865 }
1866 elsif ($prefix eq '')
1867 {
1868 @files = ($unxformed . '.c');
1869 }
1870 else
1871 {
1872 next;
1873 }
1875 foreach my $file (@files)
1876 {
1877 macro_error ($prefix . $one_file . '_SOURCES',
1878 "automatically discovered file `$file' should not be explicitly mentioned")
1879 if defined $libsources{$file};
1880 }
1881 }
1882 }
1885 # @OBJECTS
1886 # handle_single_transform_list ($VAR, $TOPPARENT, $DERIVED, $OBJ, @FILES)
1887 # -----------------------------------------------------------------------
1888 # Does much of the actual work for handle_source_transform.
1889 # Arguments are:
1890 # $VAR is the name of the variable that the source filenames come from
1891 # $TOPPARENT is the name of the _SOURCES variable which is being processed
1892 # $DERIVED is the name of resulting executable or library
1893 # $OBJ is the object extension (e.g., `$U.lo')
1894 # @FILES is the list of source files to transform
1895 # Result is a list of the names of objects
1896 # %linkers_used will be updated with any linkers needed
1897 sub handle_single_transform_list ($$$$@)
1898 {
1899 my ($var, $topparent, $derived, $obj, @files) = @_;
1900 my @result = ();
1901 my $nonansi_obj = $obj;
1902 $nonansi_obj =~ s/\$U//g;
1904 # Turn sources into objects. We use a while loop like this
1905 # because we might add to @files in the loop.
1906 while (scalar @files > 0)
1907 {
1908 $_ = shift @files;
1910 # Configure substitutions in _SOURCES variables are errors.
1911 if (/^\@.*\@$/)
1912 {
1913 macro_error ($var,
1914 "`$var' includes configure substitution `$_', and is referred to from `$topparent': configure substitutions not allowed in _SOURCES variables");
1915 next;
1916 }
1918 # If the source file is in a subdirectory then the `.o' is put
1919 # into the current directory, unless the subdir-objects option
1920 # is in effect.
1922 # Split file name into base and extension.
1923 next if ! /^(?:(.*)\/)?([^\/]*)($KNOWN_EXTENSIONS_PATTERN)$/;
1924 my $full = $_;
1925 my $directory = $1 || '';
1926 my $base = $2;
1927 my $extension = $3;
1929 # We must generate a rule for the object if it requires its own flags.
1930 my $renamed = 0;
1931 my ($linker, $object);
1933 # This records whether we've seen a derived source file (eg,
1934 # yacc output).
1935 my $derived_source = 0;
1937 # This holds the `aggregate context' of the file we are
1938 # currently examining. If the file is compiled with
1939 # per-object flags, then it will be the name of the object.
1940 # Otherwise it will be `AM'. This is used by the target hook
1941 # language function.
1942 my $aggregate = 'AM';
1944 $extension = &derive_suffix ($extension, $nonansi_obj);
1945 my $lang;
1946 if ($extension_map{$extension} &&
1947 ($lang = $languages{$extension_map{$extension}}))
1948 {
1949 # Found the language, so see what it says.
1950 &saw_extension ($extension);
1952 # Note: computed subr call. The language rewrite function
1953 # should return one of the $LANG_* constants. It could
1954 # also return a list whose first value is such a constant
1955 # and whose second value is a new source extension which
1956 # should be applied. This means this particular language
1957 # generates another source file which we must then process
1958 # further.
1959 my $subr = 'lang_' . $lang->name . '_rewrite';
1960 my ($r, $source_extension)
1961 = & $subr ($directory, $base, $extension);
1962 # Skip this entry if we were asked not to process it.
1963 next if $r == $LANG_IGNORE;
1965 # Now extract linker and other info.
1966 $linker = $lang->linker;
1968 my $this_obj_ext;
1969 if (defined $source_extension)
1970 {
1971 $this_obj_ext = $source_extension;
1972 $derived_source = 1;
1973 }
1974 elsif ($lang->ansi)
1975 {
1976 $this_obj_ext = $obj;
1977 }
1978 else
1979 {
1980 $this_obj_ext = $nonansi_obj;
1981 }
1982 $object = $base . $this_obj_ext;
1984 if (defined $lang->flags
1985 && variable_defined ($derived . '_' . $lang->flags))
1986 {
1987 # We have a per-executable flag in effect for this
1988 # object. In this case we rewrite the object's
1989 # name to ensure it is unique. We also require
1990 # the `compile' program to deal with compilers
1991 # where `-c -o' does not work.
1993 # We choose the name `DERIVED_OBJECT' to ensure
1994 # (1) uniqueness, and (2) continuity between
1995 # invocations. However, this will result in a
1996 # name that is too long for losing systems, in
1997 # some situations. So we provide _SHORTNAME to
1998 # override.
2000 my $dname = $derived;
2001 if (variable_defined ($derived . '_SHORTNAME'))
2002 {
2003 # FIXME: should use the same conditional as
2004 # the _SOURCES variable. But this is really
2005 # silly overkill -- nobody should have
2006 # conditional shortnames.
2007 $dname = &variable_value ($derived . '_SHORTNAME');
2008 }
2009 $object = $dname . '-' . $object;
2011 require_conf_file ("$am_file.am", FOREIGN, 'compile')
2012 if $lang->name eq 'c';
2014 prog_error ("$lang->name flags defined without compiler")
2015 if ! defined $lang->compile;
2017 $renamed = 1;
2018 }
2020 # If rewrite said it was ok, put the object into a
2021 # subdir.
2022 if ($r == $LANG_SUBDIR && $directory ne '')
2023 {
2024 $object = $directory . '/' . $object;
2025 }
2027 # If doing dependency tracking, then we can't print
2028 # the rule. If we have a subdir object, we need to
2029 # generate an explicit rule. Actually, in any case
2030 # where the object is not in `.' we need a special
2031 # rule. The per-object rules in this case are
2032 # generated later, by handle_languages.
2033 if ($renamed || $directory ne '')
2034 {
2035 my $obj_sans_ext = substr ($object, 0,
2036 - length ($this_obj_ext));
2037 my $val = ("$full $obj_sans_ext "
2038 # Only use $this_obj_ext in the derived
2039 # source case because in the other case we
2040 # *don't* want $(OBJEXT) to appear here.
2041 . ($derived_source ? $this_obj_ext : '.o'));
2043 # If we renamed the object then we want to use the
2044 # per-executable flag name. But if this is simply a
2045 # subdir build then we still want to use the AM_ flag
2046 # name.
2047 if ($renamed)
2048 {
2049 $val = "$derived $val";
2050 $aggregate = $derived;
2051 }
2052 else
2053 {
2054 $val = "AM $val";
2055 }
2057 # Each item on this list is a string consisting of
2058 # four space-separated values: the derived flag prefix
2059 # (eg, for `foo_CFLAGS', it is `foo'), the name of the
2060 # source file, the base name of the output file, and
2061 # the extension for the object file.
2062 push (@{$lang_specific_files{$lang->name}}, $val);
2063 }
2064 }
2065 elsif ($extension eq $nonansi_obj)
2066 {
2067 # This is probably the result of a direct suffix rule.
2068 # In this case we just accept the rewrite.
2069 $object = "$base$extension";
2070 $linker = '';
2071 }
2072 else
2073 {
2074 # No error message here. Used to have one, but it was
2075 # very unpopular.
2076 # FIXME: we could potentially do more processing here,
2077 # perhaps treating the new extension as though it were a
2078 # new source extension (as above). This would require
2079 # more restructuring than is appropriate right now.
2080 next;
2081 }
2083 if (defined $object_map{$object})
2084 {
2085 if ($object_map{$object} ne $full)
2086 {
2087 am_error ("object `$object' created by `$full' and `$object_map{$object}'");
2088 }
2089 }
2091 my $comp_val = (($object =~ /\.lo$/)
2092 ? $COMPILE_LIBTOOL : $COMPILE_ORDINARY);
2093 (my $comp_obj = $object) =~ s/\.lo$/.\$(OBJEXT)/;
2094 if (defined $object_compilation_map{$comp_obj}
2095 && $object_compilation_map{$comp_obj} != 0
2096 # Only see the error once.
2097 && ($object_compilation_map{$comp_obj}
2098 != ($COMPILE_LIBTOOL | $COMPILE_ORDINARY))
2099 && $object_compilation_map{$comp_obj} != $comp_val)
2100 {
2101 am_error ("object `$object' created both with libtool and without");
2102 }
2103 $object_compilation_map{$comp_obj} |= $comp_val;
2105 if (defined $lang)
2106 {
2107 # Let the language do some special magic if required.
2108 $lang->target_hook ($aggregate, $object, $full);
2109 }
2111 if ($derived_source)
2112 {
2113 prog_error ("$lang->name has automatic dependency tracking")
2114 if $lang->autodep ne 'no';
2115 # Make sure this new source file is handled next. That will
2116 # make it appear to be at the right place in the list.
2117 unshift (@files, $object);
2118 # Distribute derived sources unless the source they are
2119 # derived from is not.
2120 &push_dist_common ($object)
2121 unless ($topparent =~ /^(?:nobase_)?nodist_/);
2122 next;
2123 }
2125 $linkers_used{$linker} = 1;
2127 push (@result, $object);
2129 if (! defined $object_map{$object})
2130 {
2131 my @dep_list = ();
2132 $object_map{$object} = $full;
2134 # If file is in subdirectory, we need explicit
2135 # dependency.
2136 if ($directory ne '' || $renamed)
2137 {
2138 push (@dep_list, $full);
2139 }
2141 # If resulting object is in subdir, we need to make
2142 # sure the subdir exists at build time.
2143 if ($object =~ /\//)
2144 {
2145 # FIXME: check that $DIRECTORY is somewhere in the
2146 # project
2148 # For Java, the way we're handling it right now, a
2149 # `..' component doesn't make sense.
2150 if ($lang->name eq 'java' && $object =~ /(\/|^)\.\.\//)
2151 {
2152 am_error ("`$full' contains `..' component but should not");
2153 }
2155 # Make sure object is removed by `make mostlyclean'.
2156 $compile_clean_files{$object} = MOSTLY_CLEAN;
2157 # If we have a libtool object then we also must remove
2158 # the ordinary .o.
2159 if ($object =~ /\.lo$/)
2160 {
2161 (my $xobj = $object) =~ s,lo$,\$(OBJEXT),;
2162 $compile_clean_files{$xobj} = MOSTLY_CLEAN;
2164 $libtool_clean_directories{$directory} = 1;
2165 }
2167 push (@dep_list, require_build_directory ($directory));
2169 # If we're generating dependencies, we also want
2170 # to make sure that the appropriate subdir of the
2171 # .deps directory is created.
2172 push (@dep_list,
2173 require_build_directory ($directory . '/$(DEPDIR)'))
2174 if $use_dependencies;
2175 }
2177 &pretty_print_rule ($object . ':', "\t", @dep_list)
2178 if scalar @dep_list > 0;
2179 }
2181 # Transform .o or $o file into .P file (for automatic
2182 # dependency code).
2183 if ($lang && $lang->autodep ne 'no')
2184 {
2185 my $depfile = $object;
2186 $depfile =~ s/\.([^.]*)$/.P$1/;
2187 $depfile =~ s/\$\(OBJEXT\)$/o/;
2188 $dep_files{dirname ($depfile) . '/$(DEPDIR)/'
2189 . basename ($depfile)} = 1;
2190 }
2191 }
2193 return @result;
2194 }
2196 # ($LINKER, $OBJVAR)
2197 # define_objects_from_sources ($VAR, $OBJVAR, $NODEFINE, $ONE_FILE,
2198 # $OBJ, $PARENT, $TOPPARENT)
2199 # ---------------------------------------------------------------------
2200 # Define an _OBJECTS variable for a _SOURCES variable (or subvariable)
2201 #
2202 # Arguments are:
2203 # $VAR is the name of the _SOURCES variable
2204 # $OBJVAR is the name of the _OBJECTS variable if known (otherwise
2205 # it will be generated and returned).
2206 # $NODEFINE is a boolean: if true, $OBJVAR will not be defined (but
2207 # work done to determine the linker will be).
2208 # $ONE_FILE is the canonical (transformed) name of object to build
2209 # $OBJ is the object extension (ie either `.o' or `.lo').
2210 # $PARENT is the variable in which $VAR is used, or $VAR if not applicable.
2211 # $TOPPARENT is the _SOURCES variable being processed.
2212 #
2213 # Result is a pair ($LINKER, $OBJVAR):
2214 # $LINKER is a boolean, true if a linker is needed to deal with the objects,
2215 # $OBJVAR is the name of the variable defined to hold the objects.
2216 #
2217 # %linkers_used, %vars_scanned, @substfroms and @substtos should be cleared
2218 # before use:
2219 # %linkers_used variable will be set to contain the linkers desired.
2220 # %vars_scanned will be used to check for recursive definitions.
2221 # @substfroms and @substtos will be used to keep a stack of variable
2222 # substitutions to be applied.
2223 #
2224 sub define_objects_from_sources ($$$$$$$)
2225 {
2226 my ($var, $objvar, $nodefine, $one_file, $obj, $parent, $topparent) = @_;
2228 if (defined $vars_scanned{$var})
2229 {
2230 macro_error ($var, "variable `$var' recursively defined");
2231 return "";
2232 }
2233 $vars_scanned{$var} = 1;
2235 my $needlinker = "";
2236 my @allresults = ();
2237 foreach my $cond (variable_conditions ($var))
2238 {
2239 my @result;
2240 foreach my $val (&variable_value_as_list ($var, $cond, $parent))
2241 {
2242 # If $val is a variable (i.e. ${foo} or $(bar), not a filename),
2243 # handle the sub variable recursively.
2244 if ($val =~ /^\$\{([^}]*)\}$/ || $val =~ /^\$\(([^)]*)\)$/)
2245 {
2246 my $subvar = $1;
2248 # If the user uses a losing variable name, just ignore it.
2249 # This isn't ideal, but people have requested it.
2250 next if ($subvar =~ /\@.*\@/);
2252 # See if the variable is actually a substitution reference
2253 my ($from, $to);
2254 my @temp_list;
2255 if ($subvar =~ /$SUBST_REF_PATTERN/o)
2256 {
2257 $subvar = $1;
2258 $to = $3;
2259 $from = quotemeta $2;
2260 }
2261 push @substfroms, $from;
2262 push @substtos, $to;
2264 my ($temp, $varname)
2265 = define_objects_from_sources ($subvar, undef,
2266 $nodefine, $one_file,
2267 $obj, $var, $topparent);
2269 push (@result, '$('. $varname . ')');
2270 $needlinker ||= $temp;
2272 pop @substfroms;
2273 pop @substtos;
2274 }
2275 else # $var is a filename
2276 {
2277 my $substnum=$#substfroms;
2278 while ($substnum >= 0)
2279 {
2280 $val =~ s/$substfroms[$substnum]$/$substtos[$substnum]/
2281 if defined $substfroms[$substnum];
2282 $substnum -= 1;
2283 }
2285 my (@transformed) =
2286 &handle_single_transform_list ($var, $topparent, $one_file, $obj, $val);
2287 push (@result, @transformed);
2288 $needlinker = "true" if @transformed;
2289 }
2290 }
2291 push (@allresults, [$cond, @result]);
2292 }
2293 # Find a name for the variable, unless imposed.
2294 $objvar = subobjname (@allresults) unless defined $objvar;
2295 # Define _OBJECTS conditionally
2296 unless ($nodefine)
2297 {
2298 foreach my $pair (@allresults)
2299 {
2300 my ($cond, @result) = @$pair;
2301 define_pretty_variable ($objvar, $cond, @result);
2302 }
2303 }
2305 delete $vars_scanned{$var};
2306 return ($needlinker, $objvar);
2307 }
2310 # $VARNAME
2311 # subobjname (@DEFINITIONS)
2312 # -------------------------
2313 # Return a name for an object variable that with definitions @DEFINITIONS.
2314 # @DEFINITIONS is a list of pair [$COND, @OBJECTS].
2315 #
2316 # If we already have an object variable containing @DEFINITIONS, reuse it.
2317 # This way, we avoid combinatorial explosion of the generated
2318 # variables. Especially, in a Makefile such as:
2319 #
2320 # | if FOO1
2321 # | A1=1
2322 # | endif
2323 # |
2324 # | if FOO2
2325 # | A2=2
2326 # | endif
2327 # |
2328 # | ...
2329 # |
2330 # | if FOON
2331 # | AN=N
2332 # | endif
2333 # |
2334 # | B=$(A1) $(A2) ... $(AN)
2335 # |
2336 # | c_SOURCES=$(B)
2337 # | d_SOURCES=$(B)
2338 #
2339 # The generated c_OBJECTS and d_OBJECTS will share the same variable
2340 # definitions.
2341 #
2342 # This setup can be the case of a testsuite containing lots (>100) of
2343 # small C programs, all testing the same set of source files.
2344 sub subobjname (@)
2345 {
2346 my $key = '';
2347 foreach my $pair (@_)
2348 {
2349 my ($cond, @values) = @$pair;
2350 $key .= "($cond)@values";
2351 }
2353 return $subobjvar{$key} if exists $subobjvar{$key};
2355 my $num = 1 + keys (%subobjvar);
2356 my $name = "am__objects_${num}";
2357 $subobjvar{$key} = $name;
2358 return $name;
2359 }
2362 # Handle SOURCE->OBJECT transform for one program or library.
2363 # Arguments are:
2364 # canonical (transformed) name of object to build
2365 # actual name of object to build
2366 # object extension (ie either `.o' or `$o'.
2367 # Return result is name of linker variable that must be used.
2368 # Empty return means just use `LINK'.
2369 sub handle_source_transform
2370 {
2371 # one_file is canonical name. unxformed is given name. obj is
2372 # object extension.
2373 my ($one_file, $unxformed, $obj) = @_;
2375 my ($linker) = '';
2377 if (variable_defined ($one_file . "_OBJECTS"))
2378 {
2379 macro_error ($one_file . '_OBJECTS',
2380 $one_file . '_OBJECTS', 'should not be defined');
2381 # No point in continuing.
2382 return;
2383 }
2385 my %used_pfx = ();
2386 my $needlinker;
2387 %linkers_used = ();
2388 foreach my $prefix ('', 'EXTRA_', 'dist_', 'nodist_',
2389 'dist_EXTRA_', 'nodist_EXTRA_')
2390 {
2391 my $var = $prefix . $one_file . "_SOURCES";
2392 next
2393 if !variable_defined ($var);
2395 # We are going to define _OBJECTS variables using the prefix.
2396 # Then we glom them all together. So we can't use the null
2397 # prefix here as we need it later.
2398 my $xpfx = ($prefix eq '') ? 'am_' : $prefix;
2400 # Keep track of which prefixes we saw.
2401 $used_pfx{$xpfx} = 1
2402 unless $prefix =~ /EXTRA_/;
2404 push @sources, "\$($var)";
2405 push @dist_sources, "\$($var)"
2406 unless $prefix =~ /^nodist_/;
2408 @substfroms = ();
2409 @substtos = ();
2410 %vars_scanned = ();
2411 my ($temp, $objvar) =
2412 define_objects_from_sources ($var,
2413 $xpfx . $one_file . '_OBJECTS',
2414 $prefix =~ /EXTRA_/,
2415 $one_file, $obj, $var, $var);
2416 $needlinker ||= $temp;
2417 }
2418 if ($needlinker)
2419 {
2420 $linker ||= &resolve_linker (%linkers_used);
2421 }
2423 my @keys = sort keys %used_pfx;
2424 if (scalar @keys == 0)
2425 {
2426 &define_variable ($one_file . "_SOURCES", $unxformed . ".c");
2427 push (@sources, $unxformed . '.c');
2428 push (@dist_sources, $unxformed . '.c');
2430 %linkers_used = ();
2431 my (@result) =
2432 &handle_single_transform_list ($one_file . '_SOURCES',
2433 $one_file . '_SOURCES',
2434 $one_file, $obj,
2435 "$unxformed.c");
2436 $linker ||= &resolve_linker (%linkers_used);
2437 define_pretty_variable ($one_file . "_OBJECTS", '', @result)
2438 }
2439 else
2440 {
2441 grep ($_ = '$(' . $_ . $one_file . '_OBJECTS)', @keys);
2442 define_pretty_variable ($one_file . '_OBJECTS', '', @keys);
2443 }
2445 # If we want to use `LINK' we must make sure it is defined.
2446 if ($linker eq '')
2447 {
2448 $need_link = 1;
2449 }
2451 return $linker;
2452 }
2455 # handle_lib_objects ($XNAME, $VAR)
2456 # ---------------------------------
2457 # Special-case @ALLOCA@ and @LIBOBJS@ in _LDADD or _LIBADD variables.
2458 # Also, generate _DEPENDENCIES variable if appropriate.
2459 # Arguments are:
2460 # transformed name of object being built, or empty string if no object
2461 # name of _LDADD/_LIBADD-type variable to examine
2462 # Returns 1 if LIBOBJS seen, 0 otherwise.
2463 sub handle_lib_objects
2464 {
2465 my ($xname, $var) = @_;
2467 prog_error ("handle_lib_objects: $var undefined")
2468 if ! variable_defined ($var);
2470 my $ret = 0;
2471 foreach my $cond (variable_conditions_recursive ($var))
2472 {
2473 if (&handle_lib_objects_cond ($xname, $var, $cond))
2474 {
2475 $ret = 1;
2476 }
2477 }
2478 return $ret;
2479 }
2481 # Subroutine of handle_lib_objects: handle a particular condition.
2482 sub handle_lib_objects_cond
2483 {
2484 my ($xname, $var, $cond) = @_;
2486 # We recognize certain things that are commonly put in LIBADD or
2487 # LDADD.
2488 my @dep_list = ();
2490 my $seen_libobjs = 0;
2491 my $flagvar = 0;
2493 foreach my $lsearch (&variable_value_as_list_recursive ($var, $cond))
2494 {
2495 # Skip -lfoo and -Ldir; these are explicitly allowed.
2496 next if $lsearch =~ /^-[lL]/;
2497 if (! $flagvar && $lsearch =~ /^-/)
2498 {
2499 if ($var =~ /^(.*)LDADD$/)
2500 {
2501 # Skip -dlopen and -dlpreopen; these are explicitly allowed.
2502 next if $lsearch =~ /^-dl(pre)?open$/;
2503 my $prefix = $1 || 'AM_';
2504 macro_error ($var,
2505 "linker flags such as `$lsearch' belong in `${prefix}LDFLAGS");
2506 }
2507 else
2508 {
2509 $var =~ /^(.*)LIBADD$/;
2510 # Only get this error once.
2511 $flagvar = 1;
2512 macro_error ($var,
2513 "linker flags such as `$lsearch' belong in `${1}LDFLAGS");
2514 }
2515 }
2517 # Assume we have a file of some sort, and push it onto the
2518 # dependency list. Autoconf substitutions are not pushed;
2519 # rarely is a new dependency substituted into (eg) foo_LDADD
2520 # -- but "bad things (eg -lX11) are routinely substituted.
2521 # Note that LIBOBJS and ALLOCA are exceptions to this rule,
2522 # and handled specially below.
2523 push (@dep_list, $lsearch)
2524 unless $lsearch =~ /^\@.*\@$/;
2526 # Automatically handle @LIBOBJS@ and @ALLOCA@. Basically this
2527 # means adding entries to dep_files.
2528 if ($lsearch =~ /^\@(LT)?LIBOBJS\@$/)
2529 {
2530 my $lt = $1 ? $1 : '';
2531 my $myobjext = ($1 ? 'l' : '') . 'o';
2533 push (@dep_list, $lsearch);
2534 $seen_libobjs = 1;
2535 if (! keys %libsources
2536 && ! variable_defined ($lt . 'LIBOBJS'))
2537 {
2538 macro_error ($var,
2539 "\@$lt" . "LIBOBJS\@ seen but never set in `$configure_ac'");
2540 }
2542 foreach my $iter (keys %libsources)
2543 {
2544 if ($iter =~ /\.[cly]$/)
2545 {
2546 &saw_extension ($&);
2547 &saw_extension ('.c');
2548 }
2550 if ($iter =~ /\.h$/)
2551 {
2552 require_file_with_macro ($var, FOREIGN, $iter);
2553 }
2554 elsif ($iter ne 'alloca.c')
2555 {
2556 my $rewrite = $iter;
2557 $rewrite =~ s/\.c$/.P$myobjext/;
2558 $dep_files{'$(DEPDIR)/' . $rewrite} = 1;
2559 $rewrite = "^" . quotemeta ($iter) . "\$";
2560 # Only require the file if it is not a built source.
2561 if (! variable_defined ('BUILT_SOURCES')
2562 || ! grep (/$rewrite/,
2563 &variable_value_as_list_recursive (
2564 'BUILT_SOURCES', 'all')))
2565 {
2566 require_file_with_macro ($var, FOREIGN, $iter);
2567 }
2568 }
2569 }
2570 }
2571 elsif ($lsearch =~ /^\@(LT)?ALLOCA\@$/)
2572 {
2573 my $lt = $1 ? $1 : '';
2574 my $myobjext = ($1 ? 'l' : '') . 'o';
2576 push (@dep_list, $lsearch);
2577 macro_error ($var,
2578 "\@$lt" . "ALLOCA\@ seen but `AC_FUNC_ALLOCA' not in `$configure_ac'")
2579 if ! defined $libsources{'alloca.c'};
2580 $dep_files{'$(DEPDIR)/alloca.P' . $myobjext} = 1;
2581 require_file_with_macro ($var, FOREIGN, 'alloca.c');
2582 &saw_extension ('c');
2583 }
2584 }
2586 if ($xname ne '')
2587 {
2588 if (conditional_ambiguous_p ($xname . '_DEPENDENCIES', $cond) ne '')
2589 {
2590 # Note that we've examined this.
2591 &examine_variable ($xname . '_DEPENDENCIES');
2592 }
2593 else
2594 {
2595 define_pretty_variable ($xname . '_DEPENDENCIES', $cond,
2596 @dep_list);
2597 }
2598 }
2600 return $seen_libobjs;
2601 }
2603 # Canonicalize the input parameter
2604 sub canonicalize
2605 {
2606 my ($string) = @_;
2607 $string =~ tr/A-Za-z0-9_\@/_/c;
2608 return $string;
2609 }
2611 # Canonicalize a name, and check to make sure the non-canonical name
2612 # is never used. Returns canonical name. Arguments are name and a
2613 # list of suffixes to check for.
2614 sub check_canonical_spelling
2615 {
2616 my ($name, @suffixes) = @_;
2618 my $xname = &canonicalize ($name);
2619 if ($xname ne $name)
2620 {
2621 foreach my $xt (@suffixes)
2622 {
2623 macro_error ("$name$xt",
2624 "invalid variable `$name$xt'; should be `$xname$xt'")
2625 if variable_defined ("$name$xt");
2626 }
2627 }
2629 return $xname;
2630 }
2633 # handle_compile ()
2634 # -----------------
2635 # Set up the compile suite.
2636 sub handle_compile ()
2637 {
2638 return
2639 unless $get_object_extension_was_run;
2641 # Boilerplate.
2642 my $default_includes = '';
2643 if (! defined $options{'nostdinc'})
2644 {
2645 $default_includes = ' -I. -I$(srcdir)';
2647 if (variable_defined ('CONFIG_HEADER'))
2648 {
2649 foreach my $hdr (split (' ', &variable_value ('CONFIG_HEADER')))
2650 {
2651 $default_includes .= ' -I' . dirname ($hdr);
2652 }
2653 }
2654 }
2656 my (@mostly_rms, @dist_rms);
2657 foreach my $item (sort keys %compile_clean_files)
2658 {
2659 if ($compile_clean_files{$item} == MOSTLY_CLEAN)
2660 {
2661 push (@mostly_rms, "\t-rm -f $item");
2662 }
2663 elsif ($compile_clean_files{$item} == DIST_CLEAN)
2664 {
2665 push (@dist_rms, "\t-rm -f $item");
2666 }
2667 else
2668 {
2669 prog_error ("invalid entry in \%compile_clean_files");
2670 }
2671 }
2673 my ($coms, $vars, $rules) =
2674 &file_contents_internal (1, "$libdir/am/compile.am",
2675 ('DEFAULT_INCLUDES' => $default_includes,
2676 'MOSTLYRMS' => join ("\n", @mostly_rms),
2677 'DISTRMS' => join ("\n", @dist_rms)));
2678 $output_vars .= $vars;
2679 $output_rules .= "$coms$rules";
2681 # Check for automatic de-ANSI-fication.
2682 if (defined $options{'ansi2knr'})
2683 {
2684 if (! $am_c_prototypes)
2685 {
2686 macro_error ('AUTOMAKE_OPTIONS',
2687 "option `ansi2knr' in use but `AM_C_PROTOTYPES' not in `$configure_ac'");
2688 &keyed_aclocal_warning ('AM_C_PROTOTYPES');
2689 # Only give this error once.
2690 $am_c_prototypes = 1;
2691 }
2693 # topdir is where ansi2knr should be.
2694 if ($options{'ansi2knr'} eq 'ansi2knr')
2695 {
2696 # Only require ansi2knr files if they should appear in
2697 # this directory.
2698 require_file_with_macro ('AUTOMAKE_OPTIONS', FOREIGN,
2699 'ansi2knr.c', 'ansi2knr.1');
2701 # ansi2knr needs to be built before subdirs, so unshift it.
2702 unshift (@all, '$(ANSI2KNR)');
2703 }
2705 my $ansi2knr_dir = '';
2706 $ansi2knr_dir = dirname ($options{'ansi2knr'})
2707 if $options{'ansi2knr'} ne 'ansi2knr';
2709 $output_rules .= &file_contents ('ansi2knr',
2710 ('ANSI2KNR-DIR' => $ansi2knr_dir));
2712 }
2713 }
2715 # handle_libtool ()
2716 # -----------------
2717 # Handle libtool rules.
2718 sub handle_libtool
2719 {
2720 return unless $seen_libtool;
2722 # Libtool requires some files, but only at top level.
2723 require_conf_file ($seen_libtool, FOREIGN, @libtool_files)
2724 if $relative_dir eq '.';
2726 my @libtool_rms;
2727 foreach my $item (sort keys %libtool_clean_directories)
2728 {
2729 my $dir = ($item eq '.') ? '' : "$item/";
2730 # .libs is for Unix, _libs for DOS.
2731 push (@libtool_rms, "\t-rm -rf ${dir}.libs ${dir}_libs");
2732 }
2734 # Output the libtool compilation rules.
2735 $output_rules .= &file_contents ('libtool',
2736 ('LTRMS' => join ("\n", @libtool_rms)));
2737 }
2739 # handle_programs ()
2740 # ------------------
2741 # Handle C programs.
2742 sub handle_programs
2743 {
2744 my @proglist = &am_install_var ('progs', 'PROGRAMS',
2745 'bin', 'sbin', 'libexec', 'pkglib',
2746 'noinst', 'check');
2747 return if ! @proglist;
2749 my $seen_libobjs = 0;
2750 foreach my $one_file (@proglist)
2751 {
2752 my $obj = &get_object_extension ($one_file);
2754 # Canonicalize names and check for misspellings.
2755 my $xname = &check_canonical_spelling ($one_file, '_LDADD', '_LDFLAGS',
2756 '_SOURCES', '_OBJECTS',
2757 '_DEPENDENCIES');
2759 my $linker = &handle_source_transform ($xname, $one_file, $obj);
2761 my $xt = '';
2762 if (variable_defined ($xname . "_LDADD"))
2763 {
2764 if (&handle_lib_objects ($xname, $xname . '_LDADD'))
2765 {
2766 $seen_libobjs = 1;
2767 }
2768 $xt = '_LDADD';
2769 }
2770 else
2771 {
2772 # User didn't define prog_LDADD override. So do it.
2773 &define_variable ($xname . '_LDADD', '$(LDADD)');
2775 # This does a bit too much work. But we need it to
2776 # generate _DEPENDENCIES when appropriate.
2777 if (variable_defined ('LDADD'))
2778 {
2779 if (&handle_lib_objects ($xname, 'LDADD'))
2780 {
2781 $seen_libobjs = 1;
2782 }
2783 }
2784 elsif (! variable_defined ($xname . '_DEPENDENCIES'))
2785 {
2786 &define_variable ($xname . '_DEPENDENCIES', '');
2787 }
2788 $xt = '_SOURCES'
2789 }
2791 if (variable_defined ($xname . '_LIBADD'))
2792 {
2793 macro_error ($xname . '_LIBADD',
2794 "use `" . $xname . "_LDADD', not `"
2795 . $xname . "_LIBADD'");
2796 }
2798 if (! variable_defined ($xname . '_LDFLAGS'))
2799 {
2800 # Define the prog_LDFLAGS variable.
2801 &define_variable ($xname . '_LDFLAGS', '');
2802 }
2804 # Determine program to use for link.
2805 my $xlink;
2806 if (variable_defined ($xname . '_LINK'))
2807 {
2808 $xlink = $xname . '_LINK';
2809 }
2810 else
2811 {
2812 $xlink = $linker ? $linker : 'LINK';
2813 }
2815 # If the resulting program lies into a subdirectory,
2816 # make sure this directory will exist.
2817 my $dirstamp = require_build_directory_maybe ($one_file);
2819 # Don't add $(EXEEXT) if user already did.
2820 my $extension = ($one_file !~ /\$\(EXEEXT\)$/
2821 ? "\$(EXEEXT)"
2822 : '');
2824 $output_rules .= &file_contents ('program',
2825 ('PROGRAM' => $one_file,
2826 'XPROGRAM' => $xname,
2827 'XLINK' => $xlink,
2828 'DIRSTAMP' => $dirstamp,
2829 'EXEEXT' => $extension));
2830 }
2832 if (variable_defined ('LDADD') && &handle_lib_objects ('', 'LDADD'))
2833 {
2834 $seen_libobjs = 1;
2835 }
2837 if ($seen_libobjs)
2838 {
2839 foreach my $one_file (@proglist)
2840 {
2841 my $xname = &canonicalize ($one_file);
2843 if (variable_defined ($xname . '_LDADD'))
2844 {
2845 &check_libobjs_sources ($xname, $xname . '_LDADD');
2846 }
2847 elsif (variable_defined ('LDADD'))
2848 {
2849 &check_libobjs_sources ($xname, 'LDADD');
2850 }
2851 }
2852 }
2853 }
2856 # handle_libraries ()
2857 # -------------------
2858 # Handle libraries.
2859 sub handle_libraries
2860 {
2861 my @liblist = &am_install_var ('libs', 'LIBRARIES',
2862 'lib', 'pkglib', 'noinst', 'check');
2863 return if ! @liblist;
2865 my @prefix = am_primary_prefixes ('LIBRARIES', 0, 'lib', 'pkglib',
2866 'noinst', 'check');
2867 if (! defined $configure_vars{'RANLIB'}
2868 && @prefix)
2869 {
2870 macro_error ($prefix[0] . '_LIBRARIES',
2871 "library used but `RANLIB' not defined in `$configure_ac'");
2872 # Only get this error once. If this is ever printed, we have
2873 # a bug.
2874 $configure_vars{'RANLIB'} = 'BUG';
2875 }
2877 my $seen_libobjs = 0;
2878 foreach my $onelib (@liblist)
2879 {
2880 # Check that the library fits the standard naming convention.
2881 if (basename ($onelib) !~ /^lib.*\.a/)
2882 {
2883 # FIXME should put line number here. That means mapping
2884 # from library name back to variable name.
2885 &am_error ("`$onelib' is not a standard library name");
2886 }
2888 my $obj = &get_object_extension ($onelib);
2890 # Canonicalize names and check for misspellings.
2891 my $xlib = &check_canonical_spelling ($onelib, '_LIBADD', '_SOURCES',
2892 '_OBJECTS', '_DEPENDENCIES',
2893 '_AR');
2895 if (! variable_defined ($xlib . '_AR'))
2896 {
2897 &define_variable ($xlib . '_AR', '$(AR) cru');
2898 }
2900 if (variable_defined ($xlib . '_LIBADD'))
2901 {
2902 if (&handle_lib_objects ($xlib, $xlib . '_LIBADD'))
2903 {
2904 $seen_libobjs = 1;
2905 }
2906 }
2907 else
2908 {
2909 # Generate support for conditional object inclusion in
2910 # libraries.
2911 &define_variable ($xlib . "_LIBADD", '');
2912 }
2914 if (variable_defined ($xlib . '_LDADD'))
2915 {
2916 macro_error ($xlib . '_LDADD',
2917 "use `" . $xlib . "_LIBADD', not `"
2918 . $xlib . "_LDADD'");
2919 }
2921 # Make sure we at look at this.
2922 &examine_variable ($xlib . '_DEPENDENCIES');
2924 &handle_source_transform ($xlib, $onelib, $obj);
2926 # If the resulting library lies into a subdirectory,
2927 # make sure this directory will exist.
2928 my $dirstamp = require_build_directory_maybe ($onelib);
2930 $output_rules .= &file_contents ('library',
2931 ('LIBRARY' => $onelib,
2932 'XLIBRARY' => $xlib,
2933 'DIRSTAMP' => $dirstamp));
2934 }
2936 if ($seen_libobjs)
2937 {
2938 foreach my $onelib (@liblist)
2939 {
2940 my $xlib = &canonicalize ($onelib);
2941 if (variable_defined ($xlib . '_LIBADD'))
2942 {
2943 &check_libobjs_sources ($xlib, $xlib . '_LIBADD');
2944 }
2945 }
2946 }
2947 }
2950 # handle_ltlibraries ()
2951 # ---------------------
2952 # Handle shared libraries.
2953 sub handle_ltlibraries
2954 {
2955 my @liblist = &am_install_var ('ltlib', 'LTLIBRARIES',
2956 'noinst', 'lib', 'pkglib', 'check');
2957 return if ! @liblist;
2959 my %instdirs;
2960 my @prefix = am_primary_prefixes ('LTLIBRARIES', 0, 'lib', 'pkglib',
2961 'noinst', 'check');
2963 foreach my $key (@prefix)
2964 {
2965 if (!$seen_libtool)
2966 {
2967 macro_error ($key . '_LTLIBRARIES',
2968 "library used but `LIBTOOL' not defined in `$configure_ac'");
2969 # Only get this error once. If this is ever printed,
2970 # we have a bug.
2971 $configure_vars{'LIBTOOL'} = 'BUG';
2972 $seen_libtool = $var_location{$key . '_LTLIBRARIES'};
2973 }
2975 # Get the installation directory of each library.
2976 (my $dir = $key) =~ s/^nobase_//;
2977 for (variable_value_as_list_recursive ($key . '_LTLIBRARIES', 'all'))
2978 {
2979 if ($instdirs{$_})
2980 {
2981 am_error ("`$_' is already going to be installed in `$instdirs{$_}'");
2982 }
2983 else
2984 {
2985 $instdirs{$_} = $dir;
2986 }
2987 }
2988 }
2990 my $seen_libobjs = 0;
2991 foreach my $onelib (@liblist)
2992 {
2993 my $obj = &get_object_extension ($onelib);
2995 # Canonicalize names and check for misspellings.
2996 my $xlib = &check_canonical_spelling ($onelib, '_LIBADD', '_LDFLAGS',
2997 '_SOURCES', '_OBJECTS',
2998 '_DEPENDENCIES');
3000 if (! variable_defined ($xlib . '_LDFLAGS'))
3001 {
3002 # Define the lib_LDFLAGS variable.
3003 &define_variable ($xlib . '_LDFLAGS', '');
3004 }
3006 # Check that the library fits the standard naming convention.
3007 my $libname_rx = "^lib.*\.la";
3008 if ((variable_defined ($xlib . '_LDFLAGS')
3009 && grep (/-module/, &variable_value_as_list_recursive (
3010 $xlib . '_LDFLAGS', 'all')))
3011 || (variable_defined ('LDFLAGS')
3012 && grep (/-module/, &variable_value_as_list_recursive (
3013 'LDFLAGS', 'all'))))
3014 {
3015 # Relax name checking for libtool modules.
3016 $libname_rx = "\.la";
3017 }
3018 if (basename ($onelib) !~ /$libname_rx$/)
3019 {
3020 # FIXME this should only be a warning for foreign packages
3021 # FIXME should put line number here. That means mapping
3022 # from library name back to variable name.
3023 &am_error ("`$onelib' is not a standard libtool library name");
3024 }
3026 if (variable_defined ($xlib . '_LIBADD'))
3027 {
3028 if (&handle_lib_objects ($xlib, $xlib . '_LIBADD'))
3029 {
3030 $seen_libobjs = 1;
3031 }
3032 }
3033 else
3034 {
3035 # Generate support for conditional object inclusion in
3036 # libraries.
3037 &define_variable ($xlib . "_LIBADD", '');
3038 }
3040 if (variable_defined ($xlib . '_LDADD'))
3041 {
3042 macro_error ($xlib . '_LDADD',
3043 "use `" . $xlib . "_LIBADD', not `"
3044 . $xlib . "_LDADD'");
3045 }
3047 # Make sure we at look at this.
3048 &examine_variable ($xlib . '_DEPENDENCIES');
3050 my $linker = &handle_source_transform ($xlib, $onelib, $obj);
3052 # Determine program to use for link.
3053 my $xlink;
3054 if (variable_defined ($xlib . '_LINK'))
3055 {
3056 $xlink = $xlib . '_LINK';
3057 }
3058 else
3059 {
3060 $xlink = $linker ? $linker : 'LINK';
3061 }
3063 my $rpath;
3064 if ($instdirs{$onelib} eq 'EXTRA'
3065 || $instdirs{$onelib} eq 'noinst'
3066 || $instdirs{$onelib} eq 'check')
3067 {
3068 # It's an EXTRA_ library, so we can't specify -rpath,
3069 # because we don't know where the library will end up.
3070 # The user probably knows, but generally speaking automake
3071 # doesn't -- and in fact configure could decide
3072 # dynamically between two different locations.
3073 $rpath = '';
3074 }
3075 else
3076 {
3077 $rpath = ('-rpath $(' . $instdirs{$onelib} . 'dir)');
3078 }
3080 # If the resulting library lies into a subdirectory,
3081 # make sure this directory will exist.
3082 my $dirstamp = require_build_directory_maybe ($onelib);
3084 $output_rules .= &file_contents ('ltlibrary',
3085 ('LTLIBRARY' => $onelib,
3086 'XLTLIBRARY' => $xlib,
3087 'RPATH' => $rpath,
3088 'XLINK' => $xlink,
3089 'DIRSTAMP' => $dirstamp));
3090 }
3092 if ($seen_libobjs)
3093 {
3094 foreach my $onelib (@liblist)
3095 {
3096 my $xlib = &canonicalize ($onelib);
3097 if (variable_defined ($xlib . '_LIBADD'))
3098 {
3099 &check_libobjs_sources ($xlib, $xlib . '_LIBADD');
3100 }
3101 }
3102 }
3103 }
3105 # See if any _SOURCES variable were misspelled. Also, make sure that
3106 # EXTRA_ variables don't contain configure substitutions.
3107 sub check_typos ()
3108 {
3109 # It is ok if the user sets this particular variable.
3110 &examine_variable ('AM_LDFLAGS');
3112 foreach my $varname (keys %var_value)
3113 {
3114 foreach my $primary ('_SOURCES', '_LIBADD', '_LDADD', '_LDFLAGS',
3115 '_DEPENDENCIES')
3116 {
3117 macro_error ($varname,
3118 "invalid unused variable name: `$varname'")
3119 # Note that a configure variable is always legitimate.
3120 # It is natural to name such variables after the
3121 # primary, so we explicitly allow it.
3122 if $varname =~ /$primary$/ && ! $content_seen{$varname}
3123 && ! exists $configure_vars{$varname};
3124 }
3125 }
3126 }
3129 # Handle scripts.
3130 sub handle_scripts
3131 {
3132 # NOTE we no longer automatically clean SCRIPTS, because it is
3133 # useful to sometimes distribute scripts verbatim. This happens
3134 # eg in Automake itself.
3135 &am_install_var ('-candist', 'scripts', 'SCRIPTS',
3136 'bin', 'sbin', 'libexec', 'pkgdata',
3137 'noinst', 'check');
3138 }
3141 # ($OUTFILE, $VFILE, @CLEAN_FILES)
3142 # &scan_texinfo_file ($FILENAME)
3143 # ------------------------------
3144 # $OUTFILE is the name of the info file produced by $FILENAME.
3145 # $VFILE is the name of the version.texi file used (empty if none).
3146 # @CLEAN_FILES is the list of by products (indexes etc.)
3147 sub scan_texinfo_file
3148 {
3149 my ($filename) = @_;
3151 # These are always created, no matter whether indexes are used or not.
3152 # (Actually tmp is only created if an @macro is used and a certain e-TeX
3153 # feature is not available.)
3154 my @clean_suffixes = qw(aux dvi log ps toc tmp
3155 cp fn ky vr tp pg); # grep new.*index texinfo.tex
3157 # There are predefined indexes which don't follow the regular rules.
3158 my %predefined_index = qw(c cps
3159 f fns
3160 k kys
3161 v vrs
3162 t tps
3163 p pgs);
3165 # There are commands which include a hidden index command.
3166 my %hidden_index = (tp => 'tps');
3167 $hidden_index{$_} = 'fns' foreach qw(fn un typefn typefun max spec
3168 op typeop method typemethod);
3169 $hidden_index{$_} = 'vrs' foreach qw(vr var typevr typevar opt cv
3170 ivar typeivar);
3172 # Indexes stored into another one. In this case, the *.??s file
3173 # is not created.
3174 my @syncodeindexes = ();
3176 my $texi = new Automake::XFile "< $filename";
3177 verbose "reading $filename";
3179 my ($outfile, $vfile);
3180 while ($_ = $texi->getline)
3181 {
3182 if (/^\@setfilename +(\S+)/)
3183 {
3184 $outfile = $1;
3185 if ($outfile =~ /\.(.+)$/ && $1 ne 'info')
3186 {
3187 file_error ("$filename:$.",
3188 "output `$outfile' has unrecognized extension");
3189 return;
3190 }
3191 }
3192 # A "version.texi" file is actually any file whose name
3193 # matches "vers*.texi".
3194 elsif (/^\@include\s+(vers[^.]*\.texi)\s*$/)
3195 {
3196 $vfile = $1;
3197 }
3199 # Try to find what are the indexes which are used.
3201 # Creating a new category of index.
3202 elsif (/^\@def(code)?index (\w+)/)
3203 {
3204 push @clean_suffixes, $2;
3205 }
3207 # Storing in a predefined index.
3208 elsif (/^\@([cfkvtp])index /)
3209 {
3210 push @clean_suffixes, $predefined_index{$1};
3211 }
3212 elsif (/^\@def(\w+) /)
3213 {
3214 push @clean_suffixes, $hidden_index{$1}
3215 if defined $hidden_index{$1};
3216 }
3218 # Merging an index into an another.
3219 elsif (/^\@syn(code)?index (\w+) (\w+)/)
3220 {
3221 push @syncodeindexes, "$2s";
3222 push @clean_suffixes, "$3s";
3223 }
3225 }
3227 if ($outfile eq '')
3228 {
3229 &am_error ("`$filename' missing \@setfilename");
3230 return;
3231 }
3233 my $infobase = basename ($filename);
3234 $infobase =~ s/\.te?xi(nfo)?$//;
3235 my %clean_files = map { +"$infobase.$_" => 1 } @clean_suffixes;
3236 grep { delete $clean_files{"$infobase.$_"} } @syncodeindexes;
3237 return ($outfile, $vfile, (sort keys %clean_files));
3238 }
3241 # ($DO-SOMETHING, $TEXICLEANS)
3242 # handle_texinfo_helper ()
3243 # ------------------------
3244 # Handle all Texinfo source; helper for handle_texinfo
3245 sub handle_texinfo_helper
3246 {
3247 macro_error ('TEXINFOS',
3248 "`TEXINFOS' is an anachronism; use `info_TEXINFOS'")
3249 if variable_defined ('TEXINFOS');
3250 return (0, '') if (! variable_defined ('info_TEXINFOS')
3251 && ! variable_defined ('html_TEXINFOS'));
3253 if (variable_defined ('html_TEXINFOS'))
3254 {
3255 macro_error ('html_TEXINFOS',
3256 "HTML generation not yet supported");
3257 return (0, '');
3258 }
3260 my @texis = &variable_value_as_list_recursive ('info_TEXINFOS', 'all');
3262 my (@info_deps_list, @dvis_list, @texi_deps);
3263 my %versions;
3264 my $done = 0;
3265 my @texi_cleans;
3266 my $canonical;
3268 my %texi_suffixes;
3269 foreach my $info_cursor (@texis)
3270 {
3271 my $infobase = $info_cursor;
3272 $infobase =~ s/\.(txi|texinfo|texi)$//;
3274 if ($infobase eq $info_cursor)
3275 {
3276 # FIXME: report line number.
3277 &am_error ("texinfo file `$info_cursor' has unrecognized extension");
3278 next;
3279 }
3280 $texi_suffixes{$1} = 1;
3282 # If 'version.texi' is referenced by input file, then include
3283 # automatic versioning capability.
3284 my ($out_file, $vtexi, @clean_files) =
3285 &scan_texinfo_file ("$relative_dir/$info_cursor")
3286 or next;
3287 push (@texi_cleans, @clean_files);
3289 if ($vtexi)
3290 {
3291 &am_error ("`$vtexi', included in `$info_cursor', also included in `$versions{$vtexi}'")
3292 if (defined $versions{$vtexi});
3293 $versions{$vtexi} = $info_cursor;
3295 # We number the stamp-vti files. This is doable since the
3296 # actual names don't matter much. We only number starting
3297 # with the second one, so that the common case looks nice.
3298 my $vti = ($done ? $done : 'vti');
3299 ++$done;
3301 # This is ugly, but it is our historical practice.
3302 if ($config_aux_dir_set_in_configure_in)
3303 {
3304 require_conf_file_with_macro ('info_TEXINFOS', FOREIGN,
3305 'mdate-sh');
3306 }
3307 else
3308 {
3309 require_file_with_macro ('info_TEXINFOS', FOREIGN,
3310 'mdate-sh');
3311 }
3313 my $conf_dir;
3314 if ($config_aux_dir_set_in_configure_in)
3315 {
3316 $conf_dir = $config_aux_dir;
3317 $conf_dir .= '/' unless $conf_dir =~ /\/$/;
3318 }
3319 else
3320 {
3321 $conf_dir = '$(srcdir)/';
3322 }
3323 $output_rules .= &file_contents ('texi-vers',
3324 ('TEXI' => $info_cursor,
3325 'VTI' => $vti,
3326 'VTEXI' => $vtexi,
3327 'MDDIR' => $conf_dir));
3328 }
3330 # If user specified file_TEXINFOS, then use that as explicit
3331 # dependency list.
3332 @texi_deps = ();
3333 push (@texi_deps, $info_cursor);
3334 # Prefix with $(srcdir) because some version of make won't
3335 # work if the target has it and the dependency doesn't.
3336 push (@texi_deps, '$(srcdir)/' . $vtexi) if $vtexi;
3338 my $canonical = &canonicalize ($infobase);
3339 if (variable_defined ($canonical . "_TEXINFOS"))
3340 {
3341 push (@texi_deps, '$(' . $canonical . '_TEXINFOS)');
3342 &push_dist_common ('$(' . $canonical . '_TEXINFOS)');
3343 }
3345 $output_rules .= ("\n" . $out_file . ": "
3346 . "@texi_deps"
3347 . "\n" . $infobase . ".dvi: "
3348 . "@texi_deps"
3349 . "\n");
3351 push (@info_deps_list, $out_file);
3352 push (@dvis_list, $infobase . '.dvi');
3353 }
3355 # Handle location of texinfo.tex.
3356 my $need_texi_file = 0;
3357 my $texinfodir;
3358 if ($cygnus_mode)
3359 {
3360 $texinfodir = '$(top_srcdir)/../texinfo';
3361 &define_variable ('TEXINFO_TEX', "$texinfodir/texinfo.tex");
3362 }
3363 elsif ($config_aux_dir_set_in_configure_in)
3364 {
3365 $texinfodir = $config_aux_dir;
3366 &define_variable ('TEXINFO_TEX', "$texinfodir/texinfo.tex");
3367 $need_texi_file = 2; # so that we require_conf_file later
3368 }
3369 elsif (variable_defined ('TEXINFO_TEX'))
3370 {
3371 # The user defined TEXINFO_TEX so assume he knows what he is
3372 # doing.
3373 $texinfodir = ('$(srcdir)/'
3374 . dirname (&variable_value ('TEXINFO_TEX')));
3375 }
3376 else
3377 {
3378 $texinfodir = '$(srcdir)';
3379 $need_texi_file = 1;
3380 }
3382 foreach my $txsfx (sort keys %texi_suffixes)
3383 {
3384 $output_rules .= &file_contents ('texibuild',
3385 ('TEXINFODIR' => $texinfodir,
3386 'SUFFIX' => $txsfx));
3387 }
3389 # The return value.
3390 my $texiclean = &pretty_print_internal ("", "\t ", @texi_cleans);
3392 push (@dist_targets, 'dist-info');
3394 if (! defined $options{'no-installinfo'})
3395 {
3396 # Make sure documentation is made and installed first. Use
3397 # $(INFO_DEPS), not 'info', because otherwise recursive makes
3398 # get run twice during "make all".
3399 unshift (@all, '$(INFO_DEPS)');
3400 }
3402 &define_variable ("INFO_DEPS", "@info_deps_list");
3403 &define_variable ("DVIS", "@dvis_list");
3404 # This next isn't strictly needed now -- the places that look here
3405 # could easily be changed to look in info_TEXINFOS. But this is
3406 # probably better, in case noinst_TEXINFOS is ever supported.
3407 &define_variable ("TEXINFOS", &variable_value ('info_TEXINFOS'));
3409 # Do some error checking. Note that this file is not required
3410 # when in Cygnus mode; instead we defined TEXINFO_TEX explicitly
3411 # up above.
3412 if ($need_texi_file && ! defined $options{'no-texinfo.tex'})
3413 {
3414 if ($need_texi_file > 1)
3415 {
3416 require_conf_file_with_macro ('info_TEXINFOS', FOREIGN,
3417 'texinfo.tex');
3418 }
3419 else
3420 {
3421 require_file_with_macro ('info_TEXINFOS', FOREIGN, 'texinfo.tex');
3422 }
3423 }
3425 return (1, $texiclean);
3426 }
3428 # handle_texinfo ()
3429 # -----------------
3430 # Handle all Texinfo source.
3431 sub handle_texinfo
3432 {
3433 my ($do_something, $texiclean) = handle_texinfo_helper ();
3434 $output_rules .= &file_contents ('texinfos',
3435 ('TEXICLEAN' => $texiclean,
3436 'LOCAL-TEXIS' => $do_something));
3437 }
3439 # Handle any man pages.
3440 sub handle_man_pages
3441 {
3442 macro_error ('MANS', "`MANS' is an anachronism; use `man_MANS'")
3443 if variable_defined ('MANS');
3445 # Find all the sections in use. We do this by first looking for
3446 # "standard" sections, and then looking for any additional
3447 # sections used in man_MANS.
3448 my (%sections, %vlist);
3449 # We handle nodist_ for uniformity. man pages aren't distributed
3450 # by default so it isn't actually very important.
3451 foreach my $pfx ('', 'dist_', 'nodist_')
3452 {
3453 # Add more sections as needed.
3454 foreach my $section ('0'..'9', 'n', 'l')
3455 {
3456 if (variable_defined ($pfx . 'man' . $section . '_MANS'))
3457 {
3458 $sections{$section} = 1;
3459 $vlist{'$(' . $pfx . 'man' . $section . '_MANS)'} = 1;
3461 &push_dist_common ('$(' . $pfx . 'man' . $section . '_MANS)')
3462 if $pfx eq 'dist_';
3463 }
3464 }
3466 if (variable_defined ($pfx . 'man_MANS'))
3467 {
3468 $vlist{'$(' . $pfx . 'man_MANS)'} = 1;
3469 foreach (&variable_value_as_list_recursive ($pfx . 'man_MANS', 'all'))
3470 {
3471 # A page like `foo.1c' goes into man1dir.
3472 if (/\.([0-9a-z])([a-z]*)$/)
3473 {
3474 $sections{$1} = 1;
3475 }
3476 }
3478 &push_dist_common ('$(' . $pfx . 'man_MANS)')
3479 if $pfx eq 'dist_';
3480 }
3481 }
3483 return unless %sections;
3485 # Now for each section, generate an install and unintall rule.
3486 # Sort sections so output is deterministic.
3487 foreach my $section (sort keys %sections)
3488 {
3489 $output_rules .= &file_contents ('mans', ('SECTION' => $section));
3490 }
3492 my @mans = sort keys %vlist;
3493 $output_vars .= file_contents ('mans-vars',
3494 ('MANS' => "@mans"));
3496 if (! defined $options{'no-installman'})
3497 {
3498 push (@all, '$(MANS)');
3499 }
3500 }
3502 # Handle DATA variables.
3503 sub handle_data
3504 {
3505 &am_install_var ('-noextra', '-candist', 'data', 'DATA',
3506 'data', 'sysconf', 'sharedstate', 'localstate',
3507 'pkgdata', 'noinst', 'check');
3508 }
3510 # Handle TAGS.
3511 sub handle_tags
3512 {
3513 my @tag_deps = ();
3514 if (variable_defined ('SUBDIRS'))
3515 {
3516 $output_rules .= ("tags-recursive:\n"
3517 . "\tlist=\'\$(SUBDIRS)\'; for subdir in \$\$list; do \\\n"
3518 # Never fail here if a subdir fails; it
3519 # isn't important.
3520 . "\t test \"\$\$subdir\" = . || (cd \$\$subdir"
3521 . " && \$(MAKE) \$(AM_MAKEFLAGS) tags); \\\n"
3522 . "\tdone\n");
3523 push (@tag_deps, 'tags-recursive');
3524 &depend ('.PHONY', 'tags-recursive');
3525 }
3527 if (&saw_sources_p (1)
3528 || variable_defined ('ETAGS_ARGS')
3529 || @tag_deps)
3530 {
3531 my @config;
3532 foreach my $spec (@config_headers)
3533 {
3534 my ($out, @ins) = split_config_file_spec ($spec);
3535 foreach my $in (@ins)
3536 {
3537 # If the config header source is in this directory,
3538 # require it.
3539 push @config, basename ($in)
3540 if $relative_dir eq dirname ($in);
3541 }
3542 }
3543 $output_rules .= &file_contents ('tags',
3544 ('CONFIG' => "@config",
3545 'DIRS' => "@tag_deps"));
3546 &examine_variable ('TAGS_DEPENDENCIES');
3547 }
3548 elsif (variable_defined ('TAGS_DEPENDENCIES'))
3549 {
3550 macro_error ('TAGS_DEPENDENCIES',
3551 "doesn't make sense to define `TAGS_DEPENDENCIES' without sources or `ETAGS_ARGS'");
3552 }
3553 else
3554 {
3555 # Every Makefile must define some sort of TAGS rule.
3556 # Otherwise, it would be possible for a top-level "make TAGS"
3557 # to fail because some subdirectory failed.
3558 $output_rules .= "tags: TAGS\nTAGS:\n\n";
3559 }
3560 }
3562 # Handle multilib support.
3563 sub handle_multilib
3564 {
3565 if ($seen_multilib && $relative_dir eq '.')
3566 {
3567 $output_rules .= &file_contents ('multilib');
3568 }
3569 }
3572 # $BOOLEAN
3573 # &for_dist_common ($A, $B)
3574 # -------------------------
3575 # Subroutine for &handle_dist: sort files to dist.
3576 #
3577 # We put README first because it then becomes easier to make a
3578 # Usenet-compliant shar file (in these, README must be first).
3579 #
3580 # FIXME: do more ordering of files here.
3581 sub for_dist_common
3582 {
3583 return 0
3584 if $a eq $b;
3585 return -1
3586 if $a eq 'README';
3587 return 1
3588 if $b eq 'README';
3589 return $a cmp $b;
3590 }
3593 # handle_dist ($MAKEFILE)
3594 # -----------------------
3595 # Handle 'dist' target.
3596 sub handle_dist
3597 {
3598 my ($makefile) = @_;
3600 # `make dist' isn't used in a Cygnus-style tree.
3601 # Omit the rules so that people don't try to use them.
3602 return if $cygnus_mode;
3604 # Look for common files that should be included in distribution.
3605 # If the aux dir is set, and it does not have a Makefile.am, then
3606 # we check for these files there as well.
3607 my $check_aux = 0;
3608 my $auxdir = '';
3609 if ($relative_dir eq '.'
3610 && $config_aux_dir_set_in_configure_in)
3611 {
3612 ($auxdir = $config_aux_dir) =~ s,^\$\(top_srcdir\)/,,;
3613 if (! &is_make_dir ($auxdir))
3614 {
3615 $check_aux = 1;
3616 }
3617 }
3618 foreach my $cfile (@common_files)
3619 {
3620 if (-f ($relative_dir . "/" . $cfile)
3621 # The file might be absent, but if it can be built it's ok.
3622 || exists $targets{$cfile})
3623 {
3624 &push_dist_common ($cfile);
3625 }
3627 # Don't use `elsif' here because a file might meaningfully
3628 # appear in both directories.
3629 if ($check_aux && -f ($auxdir . '/' . $cfile))
3630 {
3631 &push_dist_common ($auxdir . '/' . $cfile);
3632 }
3633 }
3635 # We might copy elements from $configure_dist_common to
3636 # %dist_common if we think we need to. If the file appears in our
3637 # directory, we would have discovered it already, so we don't
3638 # check that. But if the file is in a subdir without a Makefile,
3639 # we want to distribute it here if we are doing `.'. Ugly!
3640 if ($relative_dir eq '.')
3641 {
3642 foreach my $file (split (' ' , $configure_dist_common))
3643 {
3644 push_dist_common ($file)
3645 unless is_make_dir (dirname ($file));
3646 }
3647 }
3651 # Files to distributed. Don't use &variable_value_as_list_recursive
3652 # as it recursively expands `$(dist_pkgdata_DATA)' etc.
3653 check_variable_defined_unconditionally ('DIST_COMMON');
3654 my @dist_common = split (' ', variable_value ('DIST_COMMON', 'TRUE'));
3655 @dist_common = uniq (sort for_dist_common (@dist_common));
3656 pretty_print ('DIST_COMMON = ', "\t", @dist_common);
3658 # Now that we've processed DIST_COMMON, disallow further attempts
3659 # to set it.
3660 $handle_dist_run = 1;
3662 # Scan EXTRA_DIST to see if we need to distribute anything from a
3663 # subdir. If so, add it to the list. I didn't want to do this
3664 # originally, but there were so many requests that I finally
3665 # relented.
3666 if (variable_defined ('EXTRA_DIST'))
3667 {
3668 # FIXME: This should be fixed to work with conditionals. That
3669 # will require only making the entries in %dist_dirs under the
3670 # appropriate condition. This is meaningful if the nature of
3671 # the distribution should depend upon the configure options
3672 # used.
3673 foreach (&variable_value_as_list_recursive ('EXTRA_DIST', ''))
3674 {
3675 next if /^\@.*\@$/;
3676 next unless s,/+[^/]+$,,;
3677 $dist_dirs{$_} = 1
3678 unless $_ eq '.';
3679 }
3680 }
3682 # We have to check DIST_COMMON for extra directories in case the
3683 # user put a source used in AC_OUTPUT into a subdir.
3684 foreach (&variable_value_as_list_recursive ('DIST_COMMON', 'all'))
3685 {
3686 next if /^\@.*\@$/;
3687 next unless s,/+[^/]+$,,;
3688 $dist_dirs{$_} = 1
3689 unless $_ eq '.';
3690 }
3692 # Rule to check whether a distribution is viable.
3693 my %transform = ('DISTCHECK-HOOK' => &target_defined ('distcheck-hook'),
3694 'GETTEXT' => $seen_gettext);
3696 # Prepend $(distdir) to each directory given.
3697 my %rewritten = map { '$(distdir)/' . "$_" => 1 } keys %dist_dirs;
3698 $transform{'DISTDIRS'} = join (' ', sort keys %rewritten);
3700 # If we have SUBDIRS, create all dist subdirectories and do
3701 # recursive build.
3702 if (variable_defined ('SUBDIRS'))
3703 {
3704 # If SUBDIRS is conditionally defined, then set DIST_SUBDIRS
3705 # to all possible directories, and use it. If DIST_SUBDIRS is
3706 # defined, just use it.
3707 my $dist_subdir_name;
3708 # Note that we check DIST_SUBDIRS first on purpose. At least
3709 # one project uses so many conditional subdirectories that
3710 # calling variable_conditionally_defined on SUBDIRS will cause
3711 # automake to grow to 150Mb. Sigh.
3712 if (variable_defined ('DIST_SUBDIRS')
3713 || variable_conditionally_defined ('SUBDIRS'))
3714 {
3715 $dist_subdir_name = 'DIST_SUBDIRS';
3716 if (! variable_defined ('DIST_SUBDIRS'))
3717 {
3718 define_pretty_variable
3719 ('DIST_SUBDIRS', '',
3720 uniq (&variable_value_as_list_recursive ('SUBDIRS', 'all')));
3721 }
3722 }
3723 else
3724 {
3725 $dist_subdir_name = 'SUBDIRS';
3726 # We always define this because that is what `distclean'
3727 # wants.
3728 define_pretty_variable ('DIST_SUBDIRS', '', '$(SUBDIRS)');
3729 }
3731 $transform{'DIST_SUBDIR_NAME'} = $dist_subdir_name;
3732 }
3734 # If the target `dist-hook' exists, make sure it is run. This
3735 # allows users to do random weird things to the distribution
3736 # before it is packaged up.
3737 push (@dist_targets, 'dist-hook')
3738 if &target_defined ('dist-hook');
3739 $transform{'DIST-TARGETS'} = join(' ', @dist_targets);
3741 # Defining $(DISTDIR).
3742 $transform{'DISTDIR'} = !variable_defined('distdir');
3743 $transform{'TOP_DISTDIR'} = backname ($relative_dir);
3745 $output_rules .= &file_contents ('distdir', %transform);
3746 }
3749 # Handle subdirectories.
3750 sub handle_subdirs
3751 {
3752 return
3753 unless variable_defined ('SUBDIRS');
3755 # Make sure each directory mentioned in SUBDIRS actually exists.
3756 foreach my $dir (&variable_value_as_list_recursive ('SUBDIRS', 'all'))
3757 {
3758 # Skip directories substituted by configure.
3759 next if $dir =~ /^\@.*\@$/;
3761 if (! -d $am_relative_dir . '/' . $dir)
3762 {
3763 macro_error ('SUBDIRS',
3764 "required directory $am_relative_dir/$dir does not exist");
3765 next;
3766 }
3768 macro_error ('SUBDIRS', "directory should not contain `/'")
3769 if $dir =~ /\//;
3770 }
3772 $output_rules .= &file_contents ('subdirs');
3773 variable_pretty_output ('RECURSIVE_TARGETS', 'TRUE');
3774 }
3777 # ($REGEN, @DEPENDENCIES)
3778 # &scan_aclocal_m4
3779 # ----------------
3780 # If aclocal.m4 creation is automated, return the list of its dependencies.
3781 sub scan_aclocal_m4
3782 {
3783 my $regen_aclocal = 0;
3785 return (0, ())
3786 unless $relative_dir eq '.';
3788 &examine_variable ('CONFIG_STATUS_DEPENDENCIES');
3789 &examine_variable ('CONFIGURE_DEPENDENCIES');
3791 if (-f 'aclocal.m4')
3792 {
3793 &define_variable ("ACLOCAL_M4", '$(top_srcdir)/aclocal.m4');
3794 &push_dist_common ('aclocal.m4');
3796 my $aclocal = new Automake::XFile "< aclocal.m4";
3797 my $line = $aclocal->getline;
3798 $regen_aclocal = $line =~ 'generated automatically by aclocal';
3799 }
3801 my @ac_deps = ();
3803 if (-f 'acinclude.m4')
3804 {
3805 $regen_aclocal = 1;
3806 push @ac_deps, 'acinclude.m4';
3807 }
3809 if (variable_defined ('ACLOCAL_M4_SOURCES'))
3810 {
3811 push (@ac_deps, '$(ACLOCAL_M4_SOURCES)');
3812 }
3813 elsif (variable_defined ('ACLOCAL_AMFLAGS'))
3814 {
3815 # Scan all -I directories for m4 files. These are our
3816 # dependencies.
3817 my $examine_next = 0;
3818 foreach my $amdir (&variable_value_as_list_recursive ('ACLOCAL_AMFLAGS', ''))
3819 {
3820 if ($examine_next)
3821 {
3822 $examine_next = 0;
3823 if ($amdir !~ /^\// && -d $amdir)
3824 {
3825 foreach my $ac_dep (&my_glob ($amdir . '/*.m4'))
3826 {
3827 $ac_dep =~ s/^\.\/+//;
3828 push (@ac_deps, $ac_dep)
3829 unless $ac_dep eq "aclocal.m4"
3830 || $ac_dep eq "acinclude.m4";
3831 }
3832 }
3833 }
3834 elsif ($amdir eq '-I')
3835 {
3836 $examine_next = 1;
3837 }
3838 }
3839 }
3841 # Note that it might be possible that aclocal.m4 doesn't exist but
3842 # should be auto-generated. This case probably isn't very
3843 # important.
3845 return ($regen_aclocal, @ac_deps);
3846 }
3849 # @DEPENDENCY
3850 # &rewrite_inputs_into_dependencies ($ADD_SRCDIR, @INPUTS)
3851 # --------------------------------------------------------
3852 # Rewrite a list of input files into a form suitable to put on a
3853 # dependency list. The idea is that if an input file has a directory
3854 # part the same as the current directory, then the directory part is
3855 # simply removed. But if the directory part is different, then
3856 # $(top_srcdir) is prepended. Among other things, this is used to
3857 # generate the dependency list for the output files generated by
3858 # AC_OUTPUT. Consider what the dependencies should look like in this
3859 # case:
3860 # AC_OUTPUT(src/out:src/in1:lib/in2)
3861 # The first argument, ADD_SRCDIR, is 1 if $(top_srcdir) should be added.
3862 # If 0 then files that require this addition will simply be ignored.
3863 sub rewrite_inputs_into_dependencies ($@)
3864 {
3865 my ($add_srcdir, @inputs) = @_;
3866 my @newinputs;
3868 foreach my $single (@inputs)
3869 {
3870 if (dirname ($single) eq $relative_dir)
3871 {
3872 push (@newinputs, basename ($single));
3873 }
3874 elsif ($add_srcdir)
3875 {
3876 push (@newinputs, '$(top_srcdir)/' . $single);
3877 }
3878 }
3880 return @newinputs;
3881 }
3883 # Handle remaking and configure stuff.
3884 # We need the name of the input file, to do proper remaking rules.
3885 sub handle_configure
3886 {
3887 my ($local, $input, @secondary_inputs) = @_;
3889 my $input_base = basename ($input);
3890 my $local_base = basename ($local);
3892 my $amfile = $input_base . '.am';
3893 # We know we can always add '.in' because it really should be an
3894 # error if the .in was missing originally.
3895 my $infile = '$(srcdir)/' . $input_base . '.in';
3896 my $colon_infile = '';
3897 if ($local ne $input || @secondary_inputs)
3898 {
3899 $colon_infile = ':' . $input . '.in';
3900 }
3901 $colon_infile .= ':' . join (':', @secondary_inputs)
3902 if @secondary_inputs;
3904 my @rewritten = rewrite_inputs_into_dependencies (1, @secondary_inputs);
3906 my ($regen_aclocal_m4, @aclocal_m4_deps) = scan_aclocal_m4 ();
3908 $output_rules .=
3909 &file_contents ('configure',
3910 ('MAKEFILE'
3911 => $local_base,
3912 'MAKEFILE-DEPS'
3913 => "@rewritten",
3914 'CONFIG-MAKEFILE'
3915 => ((($relative_dir eq '.') ? '$@' : '$(subdir)/$@')
3916 . $colon_infile),
3917 'MAKEFILE-IN'
3918 => $infile,
3919 'MAKEFILE-IN-DEPS'
3920 => "@include_stack",
3921 'MAKEFILE-AM'
3922 => $amfile,
3923 'STRICTNESS'
3924 => $cygnus_mode ? 'cygnus' : $strictness_name,
3925 'USE-DEPS'
3926 => $cmdline_use_dependencies ? '' : ' --ignore-deps',
3927 'MAKEFILE-AM-SOURCES'
3928 => "$input$colon_infile",
3929 'REGEN-ACLOCAL-M4'
3930 => $regen_aclocal_m4,
3931 'ACLOCAL_M4_DEPS'
3932 => "@aclocal_m4_deps"));
3934 if ($relative_dir eq '.')
3935 {
3936 &push_dist_common ('acconfig.h')
3937 if -f 'acconfig.h';
3938 }
3940 # If we have a configure header, require it.
3941 my $hdr_index = 0;
3942 my @distclean_config;
3943 foreach my $spec (@config_headers)
3944 {
3945 $hdr_index += 1;
3946 # $CONFIG_H_PATH: config.h from top level.
3947 my ($config_h_path, @ins) = split_config_file_spec ($spec);
3948 my $config_h_dir = dirname ($config_h_path);
3950 # If the header is in the current directory we want to build
3951 # the header here. Otherwise, if we're at the topmost
3952 # directory and the header's directory doesn't have a
3953 # Makefile, then we also want to build the header.
3954 if ($relative_dir eq $config_h_dir
3955 || ($relative_dir eq '.' && ! &is_make_dir ($config_h_dir)))
3956 {
3957 my ($cn_sans_dir, $stamp_dir);
3958 if ($relative_dir eq $config_h_dir)
3959 {
3960 $cn_sans_dir = basename ($config_h_path);
3961 $stamp_dir = '';
3962 }
3963 else
3964 {
3965 $cn_sans_dir = $config_h_path;
3966 if ($config_h_dir eq '.')
3967 {
3968 $stamp_dir = '';
3969 }
3970 else
3971 {
3972 $stamp_dir = $config_h_dir . '/';
3973 }
3974 }
3976 # Compute relative path from directory holding output
3977 # header to directory holding input header. FIXME:
3978 # doesn't handle case where we have multiple inputs.
3979 my $in0_sans_dir;
3980 if (dirname ($ins[0]) eq $relative_dir)
3981 {
3982 $in0_sans_dir = basename ($ins[0]);
3983 }
3984 else
3985 {
3986 $in0_sans_dir = backname ($relative_dir) . '/' . $ins[0];
3987 }
3989 require_file ($config_header_location, FOREIGN, $in0_sans_dir);
3991 # Header defined and in this directory.
3992 my @files;
3993 if (-f $config_h_path . '.top')
3994 {
3995 push (@files, "$cn_sans_dir.top");
3996 }
3997 if (-f $config_h_path . '.bot')
3998 {
3999 push (@files, "$cn_sans_dir.bot");
4000 }
4002 push_dist_common (@files);
4004 # For now, acconfig.h can only appear in the top srcdir.
4005 if (-f 'acconfig.h')
4006 {
4007 push (@files, '$(top_srcdir)/acconfig.h');
4008 }
4010 my $stamp = "${stamp_dir}stamp-h${hdr_index}";
4011 $output_rules .=
4012 file_contents ('remake-hdr',
4013 ('FILES' => "@files",
4014 'CONFIG_H' => $cn_sans_dir,
4015 'CONFIG_HIN' => $in0_sans_dir,
4016 'CONFIG_H_PATH' => $config_h_path,
4017 'STAMP' => "$stamp"));
4019 push @distclean_config, $cn_sans_dir, $stamp;
4020 }
4021 }
4023 $output_rules .= file_contents ('clean-hdr',
4024 ('FILES' => "@distclean_config"))
4025 if @distclean_config;
4027 # Set location of mkinstalldirs.
4028 define_variable ('mkinstalldirs',
4029 ('$(SHELL) ' . $config_aux_dir . '/mkinstalldirs'));
4031 macro_error ('CONFIG_HEADER',
4032 "`CONFIG_HEADER' is an anachronism; now determined from `$configure_ac'")
4033 if variable_defined ('CONFIG_HEADER');
4035 my @config_h;
4036 foreach my $spec (@config_headers)
4037 {
4038 my ($out, @ins) = split_config_file_spec ($spec);
4039 # Generate CONFIG_HEADER define.
4040 if ($relative_dir eq dirname ($out))
4041 {
4042 push @config_h, basename ($out);
4043 }
4044 else
4045 {
4046 push @config_h, "\$(top_builddir)/$out";
4047 }
4048 }
4049 define_variable ("CONFIG_HEADER", "@config_h")
4050 if @config_h;
4052 # Now look for other files in this directory which must be remade
4053 # by config.status, and generate rules for them.
4054 my @actual_other_files = ();
4055 foreach my $lfile (@other_input_files)
4056 {
4057 my $file;
4058 my @inputs;
4059 if ($lfile =~ /^([^:]*):(.*)$/)
4060 {
4061 # This is the ":" syntax of AC_OUTPUT.
4062 $file = $1;
4063 @inputs = split (':', $2);
4064 }
4065 else
4066 {
4067 # Normal usage.
4068 $file = $lfile;
4069 @inputs = $file . '.in';
4070 }
4072 # Automake files should not be stored in here, but in %MAKE_LIST.
4073 prog_error ("$lfile in \@other_input_files")
4074 if -f $file . '.am';
4076 my $local = basename ($file);
4078 # Make sure the dist directory for each input file is created.
4079 # We only have to do this at the topmost level though. This
4080 # is a bit ugly but it easier than spreading out the logic,
4081 # especially in cases like AC_OUTPUT(foo/out:bar/in), where
4082 # there is no Makefile in bar/.
4083 if ($relative_dir eq '.')
4084 {
4085 foreach (@inputs)
4086 {
4087 $dist_dirs{dirname ($_)} = 1;
4088 }
4089 }
4091 # We skip files that aren't in this directory. However, if
4092 # the file's directory does not have a Makefile, and we are
4093 # currently doing `.', then we create a rule to rebuild the
4094 # file in the subdir.
4095 my $fd = dirname ($file);
4096 if ($fd ne $relative_dir)
4097 {
4098 if ($relative_dir eq '.' && ! &is_make_dir ($fd))
4099 {
4100 $local = $file;
4101 }
4102 else
4103 {
4104 next;
4105 }
4106 }
4108 my @rewritten_inputs = rewrite_inputs_into_dependencies (1, @inputs);
4109 $output_rules .= ($local . ': '
4110 . '$(top_builddir)/config.status '
4111 . "@rewritten_inputs\n"
4112 . "\t"
4113 . 'cd $(top_builddir) && '
4114 . '$(SHELL) ./config.status '
4115 . ($relative_dir eq '.' ? '' : '$(subdir)/')
4116 . '$@'
4117 . "\n");
4118 push (@actual_other_files, $local);
4120 # Require all input files.
4121 require_file ($ac_config_files_location, FOREIGN,
4122 rewrite_inputs_into_dependencies (0, @inputs));
4123 }
4125 # These files get removed by "make clean".
4126 define_pretty_variable ('CONFIG_CLEAN_FILES', '', @actual_other_files);
4127 }
4129 # Handle C headers.
4130 sub handle_headers
4131 {
4132 my @r = &am_install_var ('-defaultdist', 'header', 'HEADERS', 'include',
4133 'oldinclude', 'pkginclude',
4134 'noinst', 'check');
4135 foreach (@r)
4136 {
4137 next unless /\..*$/;
4138 &saw_extension ($&);
4139 }
4140 }
4142 sub handle_gettext
4143 {
4144 return if ! $seen_gettext || $relative_dir ne '.';
4146 if (! variable_defined ('SUBDIRS'))
4147 {
4148 conf_error ("AM_GNU_GETTEXT used but SUBDIRS not defined");
4149 return;
4150 }
4152 my @subdirs = &variable_value_as_list_recursive ('SUBDIRS', 'all');
4153 macro_error ('SUBDIRS',
4154 "AM_GNU_GETTEXT used but `po' not in SUBDIRS")
4155 if ! grep ($_ eq 'po', @subdirs);
4157 # intl/ is not required when AM_GNU_GETTEXT is called with
4158 # the `external' option.
4159 macro_error ('SUBDIRS',
4160 "AM_GNU_GETTEXT used but `intl' not in SUBDIRS")
4161 if (! $seen_gettext_external
4162 && ! grep ($_ eq 'intl', @subdirs));
4164 require_file ($ac_gettext_location, GNU, 'ABOUT-NLS');
4165 }
4167 # Handle footer elements.
4168 sub handle_footer
4169 {
4170 # NOTE don't use define_pretty_variable here, because
4171 # $contents{...} is already defined.
4172 $output_vars .= 'SOURCES = ' . variable_value ('SOURCES') . "\n\n"
4173 if variable_value ('SOURCES');
4176 target_error ('.SUFFIXES',
4177 "use variable `SUFFIXES', not target `.SUFFIXES'")
4178 if target_defined ('.SUFFIXES');
4180 # Note: AIX 4.1 /bin/make will fail if any suffix rule appears
4181 # before .SUFFIXES. So we make sure that .SUFFIXES appears before
4182 # anything else, by sticking it right after the default: target.
4183 $output_header .= ".SUFFIXES:\n";
4184 if (@suffixes || variable_defined ('SUFFIXES'))
4185 {
4186 # Make sure suffixes has unique elements. Sort them to ensure
4187 # the output remains consistent. However, $(SUFFIXES) is
4188 # always at the start of the list, unsorted. This is done
4189 # because make will choose rules depending on the ordering of
4190 # suffixes, and this lets the user have some control. Push
4191 # actual suffixes, and not $(SUFFIXES). Some versions of make
4192 # do not like variable substitutions on the .SUFFIXES line.
4193 my @user_suffixes = (variable_defined ('SUFFIXES')
4194 ? &variable_value_as_list_recursive ('SUFFIXES', '')
4195 : ());
4197 my %suffixes = map { $_ => 1 } @suffixes;
4198 delete @suffixes{@user_suffixes};
4200 $output_header .= (".SUFFIXES: "
4201 . join (' ', @user_suffixes, sort keys %suffixes)
4202 . "\n");
4203 }
4205 $output_trailer .= file_contents ('footer');
4206 }
4208 # Deal with installdirs target.
4209 sub handle_installdirs ()
4210 {
4211 $output_rules .=
4212 &file_contents ('install',
4213 ('_am_installdirs'
4214 => variable_value ('_am_installdirs') || '',
4215 'installdirs-local'
4216 => (target_defined ('installdirs-local')
4217 ? ' installdirs-local' : '')));
4218 }
4221 # Deal with all and all-am.
4222 sub handle_all ($)
4223 {
4224 my ($makefile) = @_;
4226 # Output `all-am'.
4228 # Put this at the beginning for the sake of non-GNU makes. This
4229 # is still wrong if these makes can run parallel jobs. But it is
4230 # right enough.
4231 unshift (@all, basename ($makefile));
4233 foreach my $spec (@config_headers)
4234 {
4235 my ($out, @ins) = split_config_file_spec ($spec);
4236 push (@all, basename ($out))
4237 if dirname ($out) eq $relative_dir;
4238 }
4240 # Install `all' hooks.
4241 if (&target_defined ("all-local"))
4242 {
4243 push (@all, "all-local");
4244 &depend ('.PHONY', "all-local");
4245 }
4247 &pretty_print_rule ("all-am:", "\t\t", @all);
4248 &depend ('.PHONY', 'all-am', 'all');
4251 # Output `all'.
4253 my @local_headers = ();
4254 push @local_headers, '$(BUILT_SOURCES)'
4255 if variable_defined ('BUILT_SOURCES');
4256 foreach my $spec (@config_headers)
4257 {
4258 my ($out, @ins) = split_config_file_spec ($spec);
4259 push @local_headers, basename ($out)
4260 if dirname ($out) eq $relative_dir;
4261 }
4263 if (@local_headers)
4264 {
4265 # We need to make sure config.h is built before we recurse.
4266 # We also want to make sure that built sources are built
4267 # before any ordinary `all' targets are run. We can't do this
4268 # by changing the order of dependencies to the "all" because
4269 # that breaks when using parallel makes. Instead we handle
4270 # things explicitly.
4271 $output_all .= ("all: @local_headers"
4272 . "\n\t"
4273 . '$(MAKE) $(AM_MAKEFLAGS) '
4274 . (variable_defined ('SUBDIRS')
4275 ? 'all-recursive' : 'all-am')
4276 . "\n\n");
4277 }
4278 else
4279 {
4280 $output_all .= "all: " . (variable_defined ('SUBDIRS')
4281 ? 'all-recursive' : 'all-am') . "\n\n";
4282 }
4283 }
4286 # Handle check merge target specially.
4287 sub do_check_merge_target
4288 {
4289 if (&target_defined ('check-local'))
4290 {
4291 # User defined local form of target. So include it.
4292 push (@check_tests, 'check-local');
4293 &depend ('.PHONY', 'check-local');
4294 }
4296 # In --cygnus mode, check doesn't depend on all.
4297 if ($cygnus_mode)
4298 {
4299 # Just run the local check rules.
4300 &pretty_print_rule ('check-am:', "\t\t", @check);
4301 }
4302 else
4303 {
4304 # The check target must depend on the local equivalent of
4305 # `all', to ensure all the primary targets are built. Then it
4306 # must build the local check rules.
4307 $output_rules .= "check-am: all-am\n";
4308 &pretty_print_rule ("\t\$(MAKE) \$(AM_MAKEFLAGS)", "\t ",
4309 @check)
4310 if @check;
4311 }
4312 &pretty_print_rule ("\t\$(MAKE) \$(AM_MAKEFLAGS)", "\t ",
4313 @check_tests)
4314 if @check_tests;
4316 &depend ('.PHONY', 'check', 'check-am');
4317 $output_rules .= ("check: "
4318 . (variable_defined ('SUBDIRS')
4319 ? 'check-recursive' : 'check-am')
4320 . "\n");
4321 }
4323 # Handle all 'clean' targets.
4324 sub handle_clean
4325 {
4326 my %transform;
4328 # Don't include `MAINTAINER'; it is handled specially below.
4329 foreach my $name ('MOSTLY', '', 'DIST')
4330 {
4331 $transform{"${name}CLEAN"} = variable_defined ("${name}CLEANFILES");
4332 }
4334 # Built sources are automatically removed by maintainer-clean.
4335 push (@maintainer_clean_files, '$(BUILT_SOURCES)')
4336 if variable_defined ('BUILT_SOURCES');
4337 push (@maintainer_clean_files, '$(MAINTAINERCLEANFILES)')
4338 if variable_defined ('MAINTAINERCLEANFILES');
4340 $output_rules .= &file_contents ('clean',
4341 (%transform,
4342 'MCFILES'
4343 # Join with no space to avoid
4344 # spurious `test -z' success at
4345 # runtime.
4346 => join ('', @maintainer_clean_files),
4347 'MFILES'
4348 # A space is required in the join here.
4349 => "@maintainer_clean_files"));
4350 }
4353 # &depend ($CATEGORY, @DEPENDENDEES)
4354 # ----------------------------------
4355 # The target $CATEGORY depends on @DEPENDENDEES.
4356 sub depend
4357 {
4358 my ($category, @dependendees) = @_;
4359 {
4360 push (@{$dependencies{$category}}, @dependendees);
4361 }
4362 }
4365 # &target_cmp ($A, $B)
4366 # --------------------
4367 # Subroutine for &handle_factored_dependencies to let `.PHONY' be last.
4368 sub target_cmp
4369 {
4370 return 0
4371 if $a eq $b;
4372 return -1
4373 if $b eq '.PHONY';
4374 return 1
4375 if $a eq '.PHONY';
4376 return $a cmp $b;
4377 }
4380 # &handle_factored_dependencies ()
4381 # --------------------------------
4382 # Handle everything related to gathered targets.
4383 sub handle_factored_dependencies
4384 {
4385 # Reject bad hooks.
4386 foreach my $utarg ('uninstall-data-local', 'uninstall-data-hook',
4387 'uninstall-exec-local', 'uninstall-exec-hook')
4388 {
4389 if (&target_defined ($utarg))
4390 {
4391 my $x = $utarg;
4392 $x =~ s/(data|exec)-//;
4393 target_error ($utarg, "use `$x', not `$utarg'");
4394 }
4395 }
4397 if (&target_defined ('install-local'))
4398 {
4399 target_error ('install-local',
4400 "use `install-data-local' or `install-exec-local', "
4401 . "not `install-local'");
4402 }
4404 if (!defined $options{'no-installinfo'}
4405 && &target_defined ('install-info-local'))
4406 {
4407 target_error ('install-info-local',
4408 "`install-info-local' target defined but "
4409 . "`no-installinfo' option not in use");
4410 }
4412 # Install the -local hooks.
4413 foreach (keys %dependencies)
4414 {
4415 # Hooks are installed on the -am targets.
4416 s/-am$// or next;
4417 if (&target_defined ("$_-local"))
4418 {
4419 depend ("$_-am", "$_-local");
4420 &depend ('.PHONY', "$_-local");
4421 }
4422 }
4424 # Install the -hook hooks.
4425 # FIXME: Why not be as liberal as we are with -local hooks?
4426 foreach ('install-exec', 'install-data', 'uninstall')
4427 {
4428 if (&target_defined ("$_-hook"))
4429 {
4430 $actions{"$_-am"} .=
4431 ("\t\@\$(NORMAL_INSTALL)\n"
4432 . "\t" . '$(MAKE) $(AM_MAKEFLAGS) ' . "$_-hook\n");
4433 }
4434 }
4436 # All the required targets are phony.
4437 depend ('.PHONY', keys %required_targets);
4439 # Actually output gathered targets.
4440 foreach (sort target_cmp keys %dependencies)
4441 {
4442 # If there is nothing about this guy, skip it.
4443 next
4444 unless (@{$dependencies{$_}}
4445 || $actions{$_}
4446 || $required_targets{$_});
4447 &pretty_print_rule ("$_:", "\t",
4448 uniq (sort @{$dependencies{$_}}));
4449 $output_rules .= $actions{$_}
4450 if defined $actions{$_};
4451 $output_rules .= "\n";
4452 }
4453 }
4456 # &handle_tests_dejagnu ()
4457 # ------------------------
4458 sub handle_tests_dejagnu
4459 {
4460 push (@check_tests, 'check-DEJAGNU');
4461 $output_rules .= file_contents ('dejagnu');
4462 }
4465 # Handle TESTS variable and other checks.
4466 sub handle_tests
4467 {
4468 if (defined $options{'dejagnu'})
4469 {
4470 &handle_tests_dejagnu;
4471 }
4472 else
4473 {
4474 foreach my $c ('DEJATOOL', 'RUNTEST', 'RUNTESTFLAGS')
4475 {
4476 macro_error ($c,
4477 "`$c' defined but `dejagnu' not in `AUTOMAKE_OPTIONS'")
4478 if variable_defined ($c);
4479 }
4480 }
4482 if (variable_defined ('TESTS'))
4483 {
4484 push (@check_tests, 'check-TESTS');
4485 $output_rules .= &file_contents ('check');
4486 }
4487 }
4489 # Handle Emacs Lisp.
4490 sub handle_emacs_lisp
4491 {
4492 my @elfiles = &am_install_var ('-candist', 'lisp', 'LISP',
4493 'lisp', 'noinst');
4495 return if ! @elfiles;
4497 # Generate .elc files.
4498 my @elcfiles = map { $_ . 'c' } @elfiles;
4499 define_pretty_variable ('ELCFILES', '', @elcfiles);
4501 push (@all, '$(ELCFILES)');
4503 &am_error ("`lisp_LISP' defined but `AM_PATH_LISPDIR' not in `$configure_ac'")
4504 if ! $am_lispdir_location && variable_defined ('lisp_LISP');
4506 require_conf_file ($am_lispdir_location, FOREIGN, 'elisp-comp');
4507 &define_variable ('elisp_comp', $config_aux_dir . '/elisp-comp');
4508 }
4510 # Handle Python
4511 sub handle_python
4512 {
4513 my @pyfiles = &am_install_var ('-defaultdist', 'python', 'PYTHON',
4514 'python', 'noinst');
4515 return if ! @pyfiles;
4517 # Found some python.
4518 &am_error ("`python_PYTHON' defined but `AM_PATH_PYTHON' not in `$configure_ac'")
4519 if ! $pythondir_location && variable_defined ('python_PYTHON');
4521 require_conf_file ($pythondir_location, FOREIGN, 'py-compile');
4522 &define_variable ('py_compile', $config_aux_dir . '/py-compile');
4523 }
4525 # Handle Java.
4526 sub handle_java
4527 {
4528 my @sourcelist = &am_install_var ('-candist',
4529 'java', 'JAVA',
4530 'java', 'noinst', 'check');
4531 return if ! @sourcelist;
4533 my @prefix = am_primary_prefixes ('JAVA', 1,
4534 'java', 'noinst', 'check');
4536 my $dir;
4537 foreach my $curs (@prefix)
4538 {
4539 next
4540 if $curs eq 'EXTRA';
4542 macro_error ($curs . '_JAVA',
4543 "multiple _JAVA primaries in use")
4544 if defined $dir;
4545 $dir = $curs;
4546 }
4549 push (@all, 'class' . $dir . '.stamp');
4550 }
4553 # Handle some of the minor options.
4554 sub handle_minor_options
4555 {
4556 if (defined $options{'readme-alpha'})
4557 {
4558 if ($relative_dir eq '.')
4559 {
4560 if ($package_version !~ /^$GNITS_VERSION_PATTERN$/)
4561 {
4562 # FIXME: allow real filename.
4563 file_error ($package_version_location,
4564 "version `$package_version' doesn't follow Gnits standards");
4565 }
4566 elsif (defined $1 && -f 'README-alpha')
4567 {
4568 # This means we have an alpha release. See
4569 # GNITS_VERSION_PATTERN for details.
4570 require_file_with_macro ('AUTOMAKE_OPTIONS',
4571 FOREIGN, 'README-alpha');
4572 }
4573 }
4574 }
4575 }
4577 ################################################################
4579 # ($OUTPUT, @INPUTS)
4580 # &split_config_file_spec ($SPEC)
4581 # -------------------------------
4582 # Decode the Autoconf syntax for config files (files, headers, links
4583 # etc.).
4584 sub split_config_file_spec ($)
4585 {
4586 my ($spec) = @_;
4587 my ($output, @inputs) = split (/:/, $spec);
4589 push @inputs, "$output.in"
4590 unless @inputs;
4592 return ($output, @inputs);
4593 }
4596 my %make_list;
4598 # &scan_autoconf_config_files ($CONFIG-FILES)
4599 # -------------------------------------------
4600 # Study $CONFIG-FILES which is the first argument to AC_CONFIG_FILES
4601 # (or AC_OUTPUT).
4602 sub scan_autoconf_config_files
4603 {
4604 my ($config_files) = @_;
4605 # Look at potential Makefile.am's.
4606 foreach (split ' ', $config_files)
4607 {
4608 # Must skip empty string for Perl 4.
4609 next if $_ eq "\\" || $_ eq '';
4611 # Handle $local:$input syntax. Note that we ignore
4612 # every input file past the first, though we keep
4613 # those around for later.
4614 my ($local, $input, @rest) = split (/:/);
4615 if (! $input)
4616 {
4617 $input = $local;
4618 }
4619 else
4620 {
4621 # FIXME: should be error if .in is missing.
4622 $input =~ s/\.in$//;
4623 }
4625 if (-f $input . '.am')
4626 {
4627 # We have a file that automake should generate.
4628 $make_list{$input} = join (':', ($local, @rest));
4629 }
4630 else
4631 {
4632 # We have a file that automake should cause to be
4633 # rebuilt, but shouldn't generate itself.
4634 push (@other_input_files, $_);
4635 }
4636 }
4637 }
4640 # &scan_autoconf_traces ($FILENAME)
4641 # ---------------------------------
4642 # FIXME: For the time being, we don't care about the FILENAME.
4643 sub scan_autoconf_traces ($)
4644 {
4645 my ($filename) = @_;
4647 my @traced = qw(AC_CANONICAL_HOST
4648 AC_CANONICAL_SYSTEM
4649 AC_CONFIG_AUX_DIR
4650 AC_CONFIG_FILES
4651 AC_INIT
4652 AC_LIBSOURCE
4653 AC_PROG_LEX
4654 AC_PROG_LIBTOOL AM_PROG_LIBTOOL
4655 AC_SUBST
4656 AM_AUTOMAKE_VERSION
4657 AM_CONDITIONAL
4658 AM_CONFIG_HEADER
4659 AM_C_PROTOTYPES
4660 AM_GNU_GETTEXT
4661 AM_INIT_AUTOMAKE
4662 AM_MAINTAINER_MODE
4663 AM_PATH_LISPDIR
4664 AM_PATH_PYTHON
4665 AM_PROG_CC_C_O);
4667 my $traces = "$ENV{amtraces} ";
4669 # Use a separator unlikely to be used, not `:', the default, which
4670 # has a precise meaning for AC_CONFIG_FILES and so on.
4671 $traces .= join (' ',
4672 map { "--trace=$_" . ':\$f:\$l::\$n::\${::}%' } @traced);
4674 my $tracefh = new Automake::XFile ("$traces |");
4675 verbose "reading $traces";
4677 while ($_ = $tracefh->getline)
4678 {
4679 chomp;
4680 my ($here, @args) = split /::/;
4681 my $macro = $args[0];
4683 # Alphabetical ordering please.
4684 if ($macro eq 'AC_CANONICAL_HOST')
4685 {
4686 if (! $seen_canonical)
4687 {
4688 $seen_canonical = AC_CANONICAL_HOST;
4689 $canonical_location = $here;
4690 };
4691 }
4692 elsif ($macro eq 'AC_CANONICAL_SYSTEM')
4693 {
4694 $seen_canonical = AC_CANONICAL_SYSTEM;
4695 $canonical_location = $here;
4696 }
4697 elsif ($macro eq 'AC_CONFIG_AUX_DIR')
4698 {
4699 @config_aux_path = $args[1];
4700 $config_aux_dir_set_in_configure_in = 1;
4701 }
4702 elsif ($macro eq 'AC_CONFIG_FILES')
4703 {
4704 # Look at potential Makefile.am's.
4705 $ac_config_files_location = $here;
4706 &scan_autoconf_config_files ($args[1]);
4707 }
4708 elsif ($macro eq 'AC_INIT')
4709 {
4710 if (defined $args[2])
4711 {
4712 $package_version = $args[2];
4713 $package_version_location = $here;
4714 }
4715 }
4716 elsif ($macro eq 'AC_LIBSOURCE')
4717 {
4718 $libsources{$args[1]} = $here;
4719 }
4720 elsif ($macro =~ /^A(C|M)_PROG_LIBTOOL$/)
4721 {
4722 $seen_libtool = $here;
4723 }
4724 elsif ($macro eq 'AC_PROG_LEX')
4725 {
4726 $seen_prog_lex = $here;
4727 }
4728 elsif ($macro eq 'AC_SUBST')
4729 {
4730 # Just check for alphanumeric in AC_SUBST. If you do
4731 # AC_SUBST(5), then too bad.
4732 $configure_vars{$args[1]} = $here
4733 if $args[1] =~ /^\w+$/;
4734 }
4735 elsif ($macro eq 'AM_AUTOMAKE_VERSION')
4736 {
4737 file_error ($here,
4738 "version mismatch. This is Automake $VERSION,\n" .
4739 "but the definition used by this AM_INIT_AUTOMAKE\n" .
4740 "comes from Automake $args[1]. You should recreate\n" .
4741 "aclocal.m4 with aclocal and run automake again.\n")
4742 if ($VERSION ne $args[1]);
4744 $seen_automake_version = 1;
4745 }
4746 elsif ($macro eq 'AM_CONDITIONAL')
4747 {
4748 $configure_cond{$args[1]} = $here;
4749 }
4750 elsif ($macro eq 'AM_CONFIG_HEADER')
4751 {
4752 $config_header_location = $here;
4753 push @config_headers, split (' ', $args[1]);
4754 }
4755 elsif ($macro eq 'AM_C_PROTOTYPES')
4756 {
4757 $am_c_prototypes = $here;
4758 }
4759 elsif ($macro eq 'AM_GNU_GETTEXT')
4760 {
4761 $seen_gettext = $here;
4762 $ac_gettext_location = $here;
4763 $seen_gettext_external = grep ($_ eq 'external', @args);
4764 }
4765 elsif ($macro eq 'AM_INIT_AUTOMAKE')
4766 {
4767 $seen_init_automake = $here;
4768 if (defined $args[2])
4769 {
4770 $package_version = $args[2];
4771 $package_version_location = $here;
4772 }
4773 elsif (defined $args[1])
4774 {
4775 $global_options = $args[1];
4776 }
4777 }
4778 elsif ($macro eq 'AM_MAINTAINER_MODE')
4779 {
4780 $seen_maint_mode = $here;
4781 }
4782 elsif ($macro eq 'AM_PATH_LISPDIR')
4783 {
4784 $am_lispdir_location = $here;
4785 }
4786 elsif ($macro eq 'AM_PATH_PYTHON')
4787 {
4788 $pythondir_location = $here;
4789 }
4790 elsif ($macro eq 'AM_PROG_CC_C_O')
4791 {
4792 $seen_cc_c_o = $here;
4793 }
4794 }
4795 }
4798 # &scan_one_autoconf_file ($FILENAME)
4799 # -----------------------------------
4800 # Scan one file for interesting things. Subroutine of
4801 # &scan_autoconf_files.
4802 sub scan_one_autoconf_file
4803 {
4804 my ($filename) = @_;
4806 # Some macros already provide the right traces to enable generic
4807 # code and specific arguments, instead of dedicated code. But
4808 # currently we don't handle traces. Rewrite these dedicated
4809 # macros handling into the generic macro invocation, and let our
4810 # generic case handle them.
4812 my %generalize =
4813 (
4814 'AC_FUNC_ALLOCA' => 'AC_LIBSOURCES([alloca.c])',
4815 'AC_FUNC_GETLOADAVG' => 'AC_LIBSOURCES([getloadavg.c])',
4816 'AC_FUNC_MEMCMP' => 'AC_LIBSOURCES([memcmp.c])',
4817 'AC_STRUCT_ST_BLOCKS' => 'AC_LIBSOURCES([fileblocks.c])',
4818 'A[CM]_REPLACE_GNU_GETOPT' => 'AC_LIBSOURCES([getopt.c, getopt1.c])',
4819 'A[CM]_FUNC_STRTOD' => 'AC_LIBSOURCES([strtod.c])',
4820 'AM_WITH_REGEX' => 'AC_LIBSOURCES([rx.c, rx.h, regex.c, regex.h])',
4821 'AC_FUNC_MKTIME' => 'AC_LIBSOURCES([mktime.c])',
4822 'A[CM]_FUNC_ERROR_AT_LINE' => 'AC_LIBSOURCES([error.c, error.h])',
4823 'A[CM]_FUNC_OBSTACK' => 'AC_LIBSOURCES([obstack.c, obstack.h])',
4824 );
4826 my $configfh = new Automake::XFile ("< $filename");
4827 verbose "reading $filename";
4829 my ($in_ac_output, $in_ac_replace) = (0, 0);
4830 while ($_ = $configfh->getline)
4831 {
4832 # Remove comments from current line.
4833 s/\bdnl\b.*$//;
4834 s/\#.*$//;
4836 # Skip macro definitions. Otherwise we might be confused into
4837 # thinking that a macro that was only defined was actually
4838 # used.
4839 next if /AC_DEFUN/;
4841 # Follow includes. This is a weirdness commonly in use at
4842 # Cygnus and hopefully nowhere else.
4843 if (/\b(?:m4_)?s?include\((.*)\)/ && -f $1)
4844 {
4845 # $_ being local, if we don't preserve it, when coming
4846 # back we will have $_ undefined, which is bad for the
4847 # the rest of this routine.
4848 my $underscore = $_;
4849 &scan_one_autoconf_file (unquote_m4_arg ($1));
4850 $_ = $underscore;
4851 }
4853 for my $generalize (keys %generalize)
4854 {
4855 s/\b$generalize\b/$generalize{$generalize}/g;
4856 }
4859 my $here = "$filename:$.";
4861 # Populate libobjs array.
4862 if (/LIBOBJS="(.*)\s+\$LIBOBJS"/
4863 || /LIBOBJS="\$LIBOBJS\s+(.*)"/)
4864 {
4865 foreach my $libobj_iter (split (' ', $1))
4866 {
4867 if ($libobj_iter =~ /^(.*)\.o(bj)?$/
4868 || $libobj_iter =~ /^(.*)\.\$ac_objext$/
4869 || $libobj_iter =~ /^(.*)\.\$\{ac_objext\}$/)
4870 {
4871 $libsources{$1 . '.c'} = $here;
4872 }
4873 }
4874 }
4875 elsif (/AC_LIBOBJ\(([^)]+)\)/)
4876 {
4877 $libsources{unquote_m4_arg ($1) . ".c"} = $here;
4878 }
4879 elsif (/AC_LIBSOURCE\(([^)]+)\)/)
4880 {
4881 $libsources{&unquote_m4_arg ($1)} = $here;
4882 }
4883 elsif (/AC_LIBSOURCES\(([^)]+)\)/)
4884 {
4885 foreach my $lc_iter (split (/[, ]+/, &unquote_m4_arg ($1)))
4886 {
4887 $libsources{$lc_iter} = $here;
4888 }
4889 }
4891 if (! $in_ac_replace && s/AC_REPLACE_FUNCS\s*\(\[?//)
4892 {
4893 $in_ac_replace = 1;
4894 }
4895 if ($in_ac_replace)
4896 {
4897 $in_ac_replace = 0 if s/[\]\)].*$//;
4898 # Remove trailing backslash.
4899 s/\\$//;
4900 foreach (split)
4901 {
4902 # Need to skip empty elements for Perl 4.
4903 next if $_ eq '';
4904 $libsources{$_ . '.c'} = $here;
4905 }
4906 }
4908 if (/$obsolete_rx/o)
4909 {
4910 my $hint = '';
4911 if ($obsolete_macros{$1} ne '')
4912 {
4913 $hint = '; ' . $obsolete_macros{$1};
4914 }
4915 file_error ($here, "`$1' is obsolete$hint");
4916 }
4918 # Process the AC_OUTPUT and AC_CONFIG_FILES macros.
4919 if (! $in_ac_output && s/(AC_(OUTPUT|CONFIG_FILES))\s*\(\[?//)
4920 {
4921 $in_ac_output = $1;
4922 $ac_config_files_location = $here;
4923 }
4924 if ($in_ac_output)
4925 {
4926 my $closing = 0;
4927 if (s/[\]\),].*$//)
4928 {
4929 $in_ac_output = 0;
4930 $closing = 1;
4931 }
4933 # Look at potential Makefile.am's.
4934 &scan_autoconf_config_files ($_);
4936 if ($closing
4937 && scalar keys %make_list == 0
4938 && @other_input_files == 0)
4939 {
4940 file_error ($ac_config_files_location,
4941 "no files mentioned in `$in_ac_output'");
4942 exit 1;
4943 }
4944 }
4946 if (/$AC_CONFIG_AUX_DIR_PATTERN/o)
4947 {
4948 @config_aux_path = &unquote_m4_arg ($1);
4949 $config_aux_dir_set_in_configure_in = $here;
4950 }
4952 # Check for ansi2knr.
4953 $am_c_prototypes = $here if /AM_C_PROTOTYPES/;
4955 # Check for `-c -o' code.
4956 $seen_cc_c_o = $here if /AM_PROG_CC_C_O/;
4958 # Check for NLS support.
4959 if (/\bAM_GNU_GETTEXT\b/)
4960 {
4961 $seen_gettext = $here;
4962 $ac_gettext_location = $here;
4963 $seen_gettext_external = 1
4964 if /\bAM_GNU_GETTEXT\([^\)]*\bexternal\b/;
4965 }
4967 # Handle configuration headers. A config header of `[$1]'
4968 # means we are actually scanning AM_CONFIG_HEADER from
4969 # aclocal.m4. Same thing with a leading underscore.
4970 if (/(?<!_)A([CM])_CONFIG_HEADERS?\s*\((.*)\)/
4971 && $2 ne '[$1]')
4972 {
4973 file_error ($here,
4974 "`automake requires `AM_CONFIG_HEADER', not `AC_CONFIG_HEADER'")
4975 if $1 eq 'C';
4977 $config_header_location = $here;
4978 push @config_headers, split (' ', unquote_m4_arg ($2));
4979 }
4981 # Handle AC_CANONICAL_*. Always allow upgrading to
4982 # AC_CANONICAL_SYSTEM, but never downgrading.
4983 if (/AC_CANONICAL_HOST/ || /AC_CYGWIN/ || /AC_EMXOS2/ || /AC_MINGW32/)
4984 {
4985 if (! $seen_canonical)
4986 {
4987 $seen_canonical = AC_CANONICAL_HOST;
4988 $canonical_location = $here;
4989 }
4990 }
4991 if (/AC_CANONICAL_SYSTEM/)
4992 {
4993 $seen_canonical = AC_CANONICAL_SYSTEM;
4994 $canonical_location = $here;
4995 }
4997 # If using X, include some extra variable definitions. NOTE
4998 # we don't want to force these into CFLAGS or anything,
4999 # because not all programs will necessarily use X.
5000 if (/AC_PATH_XTRA/)
5001 {
5002 foreach my $var (qw(X_CFLAGS X_LIBS X_EXTRA_LIBS X_PRE_LIBS))
5003 {
5004 $configure_vars{$var} = $here;
5005 }
5006 }
5008 # AM_INIT_AUTOMAKE with any number of argument
5009 if (/AM_INIT_AUTOMAKE/)
5010 {
5011 $seen_init_automake = $here;
5012 }
5014 # AC_INIT or AM_INIT_AUTOMAKE with two arguments
5015 if (/$AC_INIT_PATTERN/o || /$AM_INIT_AUTOMAKE_PATTERN/o)
5016 {
5017 if ($1 =~ /$AM_PACKAGE_VERSION_PATTERN/o)
5018 {
5019 $package_version = $1;
5020 $package_version_location = $here;
5021 }
5022 }
5024 # AM_INIT_AUTOMAKE with one argument.
5025 if (/AM_INIT_AUTOMAKE\(([^),]+)\)/)
5026 {
5027 $global_options = &unquote_m4_arg ($1);
5028 }
5030 if (/AM_AUTOMAKE_VERSION\(([^)]+)\)/)
5031 {
5032 my $vers = &unquote_m4_arg ($1);
5033 file_error ($here,
5034 "version mismatch. This is Automake $VERSION, " .
5035 "but $filename\nwas generated for Automake $vers. " .
5036 "You should recreate\n$filename with aclocal and " .
5037 "run automake again.\n")
5038 if ($VERSION ne $vers);
5040 $seen_automake_version = 1;
5041 }
5043 if (/AM_PROG_LEX/)
5044 {
5045 $configure_vars{'LEX'} = $here;
5046 $configure_vars{'LEX_OUTPUT_ROOT'} = $here;
5047 $configure_vars{'LEXLIB'} = $here;
5048 $seen_prog_lex = $here;
5049 }
5050 if (/AC_PROG_LEX/ && $filename =~ /configure\.(ac|in)$/)
5051 {
5052 $configure_vars{'LEX'} = $here;
5053 $configure_vars{'LEX_OUTPUT_ROOT'} = $here;
5054 $configure_vars{'LEXLIB'} = $here;
5055 $seen_prog_lex = $here;
5056 file_warning ($here,
5057 "automake requires `AM_PROG_LEX', not `AC_PROG_LEX'");
5058 }
5060 if (/AC_PROG_(F77|YACC|RANLIB|CC|CXXCPP|CXX|LEX|AWK|CPP|LN_S)/)
5061 {
5062 $configure_vars{$1} = $here;
5063 }
5064 if (/$AC_CHECK_PATTERN/o)
5065 {
5066 $configure_vars{$3} = $here;
5067 }
5068 if (/$AM_MISSING_PATTERN/o
5069 && $1 ne 'ACLOCAL'
5070 && $1 ne 'AUTOCONF'
5071 && $1 ne 'AUTOMAKE'
5072 && $1 ne 'AUTOHEADER'
5073 # AM_INIT_AUTOMAKE is AM_MISSING_PROG'ing MAKEINFO. But
5074 # we handle it elsewhere.
5075 && $1 ne 'MAKEINFO')
5076 {
5077 $configure_vars{$1} = $here;
5078 }
5080 # Explicitly avoid ANSI2KNR -- we AC_SUBST that in protos.m4,
5081 # but later define it elsewhere. This is pretty hacky. We
5082 # also explicitly avoid INSTALL_SCRIPT and some other
5083 # variables because they are defined in header-vars.am.
5084 # AMDEPBACKSLASH might be subst'd by `\', which certainly would
5085 # not be appreciated by Make.
5086 if (/$AC_SUBST_PATTERN/o
5087 && $1 ne 'ANSI2KNR'
5088 && $1 ne 'INSTALL_SCRIPT'
5089 && $1 ne 'INSTALL_DATA'
5090 && $1 ne 'AMDEPBACKSLASH')
5091 {
5092 $configure_vars{$1} = $here;
5093 }
5095 if (/AM_MAINTAINER_MODE/)
5096 {
5097 $seen_maint_mode = $here;
5098 $configure_cond{'MAINTAINER_MODE'} = $here;
5099 }
5101 $am_lispdir_location = $here if /AM_PATH_LISPDIR/;
5103 if (/AM_PATH_PYTHON/)
5104 {
5105 $pythondir_location = $here;
5106 $configure_vars{'pythondir'} = $here;
5107 $configure_vars{'PYTHON'} = $here;
5108 }
5110 if (/A(C|M)_PROG_LIBTOOL/)
5111 {
5112 # We're not ready for this yet. People still use a
5113 # libtool with no AC_PROG_LIBTOOL. Once that is the
5114 # dominant version we can reenable this code -- but next
5115 # time by mentioning the macro in %obsolete_macros, both
5116 # here and in aclocal.in.
5118 # if (/AM_PROG_LIBTOOL/)
5119 # {
5120 # file_warning ($here, "`AM_PROG_LIBTOOL' is obsolete, use `AC_PROG_LIBTOOL' instead");
5121 # }
5122 $seen_libtool = $here;
5123 $configure_vars{'LIBTOOL'} = $here;
5124 $configure_vars{'RANLIB'} = $here;
5125 $configure_vars{'CC'} = $here;
5126 # AC_PROG_LIBTOOL runs AC_CANONICAL_HOST. Make sure we
5127 # never downgrade (if we've seen AC_CANONICAL_SYSTEM).
5128 $seen_canonical = AC_CANONICAL_HOST if ! $seen_canonical;
5129 }
5131 $seen_multilib = $here if (/AM_ENABLE_MULTILIB/);
5133 if (/$AM_CONDITIONAL_PATTERN/o)
5134 {
5135 $configure_cond{$1} = $here;
5136 }
5138 # Check for Fortran 77 intrinsic and run-time libraries.
5139 if (/AC_F77_LIBRARY_LDFLAGS/)
5140 {
5141 $configure_vars{'FLIBS'} = $here;
5142 }
5143 }
5144 }
5147 # &scan_autoconf_files ()
5148 # -----------------------
5149 # Check whether we use `configure.ac' or `configure.in'.
5150 # Scan it (and possibly `aclocal.m4') for interesting things.
5151 # We must scan aclocal.m4 because there might be AC_SUBSTs and such there.
5152 sub scan_autoconf_files
5153 {
5154 # Reinitialize libsources here. This isn't really necessary,
5155 # since we currently assume there is only one configure.ac. But
5156 # that won't always be the case.
5157 %libsources = ();
5159 $configure_ac = find_configure_ac;
5160 die "$me: `configure.ac' or `configure.in' is required\n"
5161 if !$configure_ac;
5163 if (defined $ENV{'amtraces'})
5164 {
5165 print STDERR "$me: Autoconf traces is an experimental feature\n";
5166 print STDERR "$me: use at your own risks\n";
5168 scan_autoconf_traces ($configure_ac);
5169 }
5170 else
5171 {
5172 scan_one_autoconf_file ($configure_ac);
5173 scan_one_autoconf_file ('aclocal.m4')
5174 if -f 'aclocal.m4';
5175 }
5177 # Set input and output files if not specified by user.
5178 if (! @input_files)
5179 {
5180 @input_files = sort keys %make_list;
5181 %output_files = %make_list;
5182 }
5184 @configure_input_files = sort keys %make_list;
5186 conf_error ("`AM_INIT_AUTOMAKE' must be used")
5187 if ! $seen_init_automake;
5189 if (! $seen_automake_version)
5190 {
5191 if (-f 'aclocal.m4')
5192 {
5193 file_error ($seen_init_automake || $me,
5194 "your implementation of AM_INIT_AUTOMAKE comes from " .
5195 "an\nold Automake version. You should recreate " .
5196 "aclocal.m4\nwith aclocal and run automake again.\n");
5197 }
5198 else
5199 {
5200 file_error ($seen_init_automake || $me,
5201 "no proper implementation of AM_INIT_AUTOMAKE was " .
5202 "found,\nprobably because aclocal.m4 is missing...\n" .
5203 "You should run aclocal to create this file, then\n" .
5204 "run automake again.\n");
5205 }
5206 }
5208 # Look for some files we need. Always check for these. This
5209 # check must be done for every run, even those where we are only
5210 # looking at a subdir Makefile. We must set relative_dir so that
5211 # the file-finding machinery works.
5212 # FIXME: Is this broken because it needs dynamic scopes.
5213 # My tests seems to show it's not the case.
5214 $relative_dir = '.';
5215 require_conf_file ($configure_ac, FOREIGN,
5216 'install-sh', 'mkinstalldirs', 'missing');
5217 am_error ("`install.sh' is an anachronism; use `install-sh' instead")
5218 if -f $config_aux_path[0] . '/install.sh';
5220 require_conf_file ($pythondir_location, FOREIGN, 'py-compile')
5221 if $pythondir_location;
5223 # Preserve dist_common for later.
5224 $configure_dist_common = variable_value ('DIST_COMMON', 'TRUE') || '';
5225 }
5227 ################################################################
5229 # Set up for Cygnus mode.
5230 sub check_cygnus
5231 {
5232 return unless $cygnus_mode;
5234 &set_strictness ('foreign');
5235 $options{'no-installinfo'} = 1;
5236 $options{'no-dependencies'} = 1;
5237 $use_dependencies = 0;
5239 conf_error ("`AM_MAINTAINER_MODE' required when --cygnus specified")
5240 if !$seen_maint_mode;
5241 }
5243 # Do any extra checking for GNU standards.
5244 sub check_gnu_standards
5245 {
5246 if ($relative_dir eq '.')
5247 {
5248 # In top level (or only) directory.
5249 require_file ("$am_file.am", GNU,
5250 qw(INSTALL NEWS README COPYING AUTHORS ChangeLog));
5251 }
5253 if ($strictness >= GNU
5254 && defined $options{'no-installman'})
5255 {
5256 macro_error ('AUTOMAKE_OPTIONS',
5257 "option `no-installman' disallowed by GNU standards");
5258 }
5260 if ($strictness >= GNU
5261 && defined $options{'no-installinfo'})
5262 {
5263 macro_error ('AUTOMAKE_OPTIONS',
5264 "option `no-installinfo' disallowed by GNU standards");
5265 }
5266 }
5268 # Do any extra checking for GNITS standards.
5269 sub check_gnits_standards
5270 {
5271 if ($relative_dir eq '.')
5272 {
5273 # In top level (or only) directory.
5274 require_file ("$am_file.am", GNITS, 'THANKS');
5275 }
5276 }
5278 ################################################################
5279 #
5280 # Functions to handle files of each language.
5282 # Each `lang_X_rewrite($DIRECTORY, $BASE, $EXT)' function follows a
5283 # simple formula: Return value is $LANG_SUBDIR if the resulting object
5284 # file should be in a subdir if the source file is, $LANG_PROCESS if
5285 # file is to be dealt with, $LANG_IGNORE otherwise.
5287 # Much of the actual processing is handled in
5288 # handle_single_transform_list. These functions exist so that
5289 # auxiliary information can be recorded for a later cleanup pass.
5290 # Note that the calls to these functions are computed, so don't bother
5291 # searching for their precise names in the source.
5293 # This is just a convenience function that can be used to determine
5294 # when a subdir object should be used.
5295 sub lang_sub_obj
5296 {
5297 return defined $options{'subdir-objects'} ? $LANG_SUBDIR : $LANG_PROCESS;
5298 }
5300 # Rewrite a single C source file.
5301 sub lang_c_rewrite
5302 {
5303 my ($directory, $base, $ext) = @_;
5305 if (defined $options{'ansi2knr'} && $base =~ /_$/)
5306 {
5307 # FIXME: include line number in error.
5308 am_error ("C source file `$base.c' would be deleted by ansi2knr rules");
5309 }
5311 my $r = $LANG_PROCESS;
5312 if (defined $options{'subdir-objects'})
5313 {
5314 $r = $LANG_SUBDIR;
5315 $base = $directory . '/' . $base
5316 unless $directory eq '.' || $directory eq '';
5318 if (! $seen_cc_c_o)
5319 {
5320 # Only give error once.
5321 $seen_cc_c_o = 1;
5322 # FIXME: line number.
5323 am_error ("C objects in subdir but `AM_PROG_CC_C_O' not in `$configure_ac'");
5324 }
5326 require_conf_file ("$am_file.am", FOREIGN, 'compile');
5328 # In this case we already have the directory information, so
5329 # don't add it again.
5330 $de_ansi_files{$base} = '';
5331 }
5332 else
5333 {
5334 $de_ansi_files{$base} = (($directory eq '.' || $directory eq '')
5335 ? ''
5336 : "$directory/");
5337 }
5339 return $r;
5340 }
5342 # Rewrite a single C++ source file.
5343 sub lang_cxx_rewrite
5344 {
5345 return &lang_sub_obj;
5346 }
5348 # Rewrite a single header file.
5349 sub lang_header_rewrite
5350 {
5351 # Header files are simply ignored.
5352 return $LANG_IGNORE;
5353 }
5355 # Rewrite a single yacc file.
5356 sub lang_yacc_rewrite
5357 {
5358 my ($directory, $base, $ext) = @_;
5360 my $r = &lang_sub_obj;
5361 (my $newext = $ext) =~ tr/y/c/;
5362 return ($r, $newext);
5363 }
5365 # Rewrite a single yacc++ file.
5366 sub lang_yaccxx_rewrite
5367 {
5368 my ($directory, $base, $ext) = @_;
5370 my $r = &lang_sub_obj;
5371 (my $newext = $ext) =~ tr/y/c/;
5372 return ($r, $newext);
5373 }
5375 # Rewrite a single lex file.
5376 sub lang_lex_rewrite
5377 {
5378 my ($directory, $base, $ext) = @_;
5380 my $r = &lang_sub_obj;
5381 (my $newext = $ext) =~ tr/l/c/;
5382 return ($r, $newext);
5383 }
5385 # Rewrite a single lex++ file.
5386 sub lang_lexxx_rewrite
5387 {
5388 my ($directory, $base, $ext) = @_;
5390 my $r = &lang_sub_obj;
5391 (my $newext = $ext) =~ tr/l/c/;
5392 return ($r, $newext);
5393 }
5395 # Rewrite a single assembly file.
5396 sub lang_asm_rewrite
5397 {
5398 return &lang_sub_obj;
5399 }
5401 # Rewrite a single Fortran 77 file.
5402 sub lang_f77_rewrite
5403 {
5404 return $LANG_PROCESS;
5405 }
5407 # Rewrite a single preprocessed Fortran 77 file.
5408 sub lang_ppf77_rewrite
5409 {
5410 return $LANG_PROCESS;
5411 }
5413 # Rewrite a single ratfor file.
5414 sub lang_ratfor_rewrite
5415 {
5416 return $LANG_PROCESS;
5417 }
5419 # Rewrite a single Objective C file.
5420 sub lang_objc_rewrite
5421 {
5422 return &lang_sub_obj;
5423 }
5425 # Rewrite a single Java file.
5426 sub lang_java_rewrite
5427 {
5428 return $LANG_SUBDIR;
5429 }
5431 # The lang_X_finish functions are called after all source file
5432 # processing is done. Each should handle defining rules for the
5433 # language, etc. A finish function is only called if a source file of
5434 # the appropriate type has been seen.
5436 sub lang_c_finish
5437 {
5438 # Push all libobjs files onto de_ansi_files. We actually only
5439 # push files which exist in the current directory, and which are
5440 # genuine source files.
5441 foreach my $file (keys %libsources)
5442 {
5443 if ($file =~ /^(.*)\.[cly]$/ && -f "$relative_dir/$file")
5444 {
5445 $de_ansi_files{$1} = (($relative_dir eq '.' || $relative_dir eq '')
5446 ? ''
5447 : "$relative_dir/");
5448 }
5449 }
5451 if (defined $options{'ansi2knr'} && keys %de_ansi_files)
5452 {
5453 # Make all _.c files depend on their corresponding .c files.
5454 my @objects;
5455 foreach my $base (sort keys %de_ansi_files)
5456 {
5457 # Each _.c file must depend on ansi2knr; otherwise it
5458 # might be used in a parallel build before it is built.
5459 # We need to support files in the srcdir and in the build
5460 # dir (because these files might be auto-generated. But
5461 # we can't use $< -- some makes only define $< during a
5462 # suffix rule.
5463 my $ansfile = $de_ansi_files{$base} . $base . '.c';
5464 $output_rules .= ($base . "_.c: $ansfile \$(ANSI2KNR)\n\t"
5465 . '$(CPP) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS) $(CPPFLAGS) '
5466 . '`if test -f $(srcdir)/' . $ansfile
5467 . '; then echo $(srcdir)/' . $ansfile
5468 . '; else echo ' . $ansfile . '; fi` '
5469 . "| sed 's/^# \\([0-9]\\)/#line \\1/' "
5470 . '| $(ANSI2KNR) > ' . $base . "_.c"
5471 # If ansi2knr fails then we shouldn't
5472 # create the _.c file
5473 . " || rm -f ${base}_.c\n");
5474 push (@objects, $base . '_.$(OBJEXT)');
5475 push (@objects, $base . '_.lo')
5476 if $seen_libtool;
5477 }
5479 # Make all _.o (and _.lo) files depend on ansi2knr.
5480 # Use a sneaky little hack to make it print nicely.
5481 &pretty_print_rule ('', '', @objects, ':', '$(ANSI2KNR)');
5482 }
5483 }
5485 # This is a yacc helper which is called whenever we have decided to
5486 # compile a yacc file.
5487 sub lang_yacc_target_hook
5488 {
5489 my ($self, $aggregate, $output, $input) = @_;
5491 my $flag = $aggregate . "_YFLAGS";
5492 if ((variable_defined ($flag)
5493 && &variable_value ($flag) =~ /$DASH_D_PATTERN/o)
5494 || (variable_defined ('YFLAGS')
5495 && &variable_value ('YFLAGS') =~ /$DASH_D_PATTERN/o))
5496 {
5497 (my $output_base = $output) =~ s/$KNOWN_EXTENSIONS_PATTERN$//;
5498 my $header = $output_base . '.h';
5500 # Found a `-d' that applies to the compilation of this file.
5501 # Add a dependency for the generated header file, and arrange
5502 # for that file to be included in the distribution.
5503 # FIXME: this fails for `nodist_*_SOURCES'.
5504 $output_rules .= ("${header}: $output\n"
5505 # Recover from removal of $header
5506 . "\t\@if test ! -f \$@; then \\\n"
5507 . "\t rm -f $output; \\\n"
5508 . "\t \$(MAKE) $output; \\\n"
5509 . "\telse :; fi\n");
5510 &push_dist_common ($header);
5511 # If the files are built in the build directory, then we want
5512 # to remove them with `make clean'. If they are in srcdir
5513 # they shouldn't be touched. However, we can't determine this
5514 # statically, and the GNU rules say that yacc/lex output files
5515 # should be removed by maintainer-clean. So that's what we
5516 # do.
5517 push (@maintainer_clean_files, $header);
5518 }
5519 # Erase $OUTPUT on `make maintainer-clean' (by GNU standards).
5520 # See the comment above for $HEADER.
5521 push (@maintainer_clean_files, $output);
5522 }
5524 # This is a lex helper which is called whenever we have decided to
5525 # compile a lex file.
5526 sub lang_lex_target_hook
5527 {
5528 my ($self, $aggregate, $output, $input) = @_;
5529 # If the files are built in the build directory, then we want to
5530 # remove them with `make clean'. If they are in srcdir they
5531 # shouldn't be touched. However, we can't determine this
5532 # statically, and the GNU rules say that yacc/lex output files
5533 # should be removed by maintainer-clean. So that's what we do.
5534 push (@maintainer_clean_files, $output);
5535 }
5537 # This is a helper for both lex and yacc.
5538 sub yacc_lex_finish_helper
5539 {
5540 return if defined $language_scratch{'lex-yacc-done'};
5541 $language_scratch{'lex-yacc-done'} = 1;
5543 # If there is more than one distinct yacc (resp lex) source file
5544 # in a given directory, then the `ylwrap' program is required to
5545 # allow parallel builds to work correctly. FIXME: for now, no
5546 # line number.
5547 require_conf_file ($configure_ac, FOREIGN, 'ylwrap');
5548 if ($config_aux_dir_set_in_configure_in)
5549 {
5550 &define_variable ('YLWRAP', $config_aux_dir . "/ylwrap");
5551 }
5552 else
5553 {
5554 &define_variable ('YLWRAP', '$(top_srcdir)/ylwrap');
5555 }
5556 }
5558 sub lang_yacc_finish
5559 {
5560 return if defined $language_scratch{'yacc-done'};
5561 $language_scratch{'yacc-done'} = 1;
5563 macro_error ('YACCFLAGS',
5564 "`YACCFLAGS' obsolete; use `YFLAGS' instead")
5565 if variable_defined ('YACCFLAGS');
5567 if (count_files_for_language ('yacc') > 1)
5568 {
5569 &yacc_lex_finish_helper;
5570 }
5571 }
5574 sub lang_lex_finish
5575 {
5576 return if defined $language_scratch{'lex-done'};
5577 $language_scratch{'lex-done'} = 1;
5579 am_error ("lex source seen but `AM_PROG_LEX' not in `$configure_ac'")
5580 unless $seen_prog_lex;
5582 if (count_files_for_language ('lex') > 1)
5583 {
5584 &yacc_lex_finish_helper;
5585 }
5586 }
5589 # Given a hash table of linker names, pick the name that has the most
5590 # precedence. This is lame, but something has to have global
5591 # knowledge in order to eliminate the conflict. Add more linkers as
5592 # required.
5593 sub resolve_linker
5594 {
5595 my (%linkers) = @_;
5597 foreach my $l (qw(GCJLINK CXXLINK F77LINK OBJCLINK))
5598 {
5599 return $l if defined $linkers{$l};
5600 }
5601 return 'LINK';
5602 }
5604 # Called to indicate that an extension was used.
5605 sub saw_extension
5606 {
5607 my ($ext) = @_;
5608 if (! defined $extension_seen{$ext})
5609 {
5610 $extension_seen{$ext} = 1;
5611 }
5612 else
5613 {
5614 ++$extension_seen{$ext};
5615 }
5616 }
5618 # Return the number of files seen for a given language. Knows about
5619 # special cases we care about. FIXME: this is hideous. We need
5620 # something that involves real language objects. For instance yacc
5621 # and yaccxx could both derive from a common yacc class which would
5622 # know about the strange ylwrap requirement. (Or better yet we could
5623 # just not support legacy yacc!)
5624 sub count_files_for_language
5625 {
5626 my ($name) = @_;
5628 my @names;
5629 if ($name eq 'yacc' || $name eq 'yaccxx')
5630 {
5631 @names = ('yacc', 'yaccxx');
5632 }
5633 elsif ($name eq 'lex' || $name eq 'lexxx')
5634 {
5635 @names = ('lex', 'lexxx');
5636 }
5637 else
5638 {
5639 @names = ($name);
5640 }
5642 my $r = 0;
5643 foreach $name (@names)
5644 {
5645 my $lang = $languages{$name};
5646 foreach my $ext (@{$lang->extensions})
5647 {
5648 $r += $extension_seen{$ext}
5649 if defined $extension_seen{$ext};
5650 }
5651 }
5653 return $r
5654 }
5656 # Called to ask whether source files have been seen . If HEADERS is 1,
5657 # headers can be included.
5658 sub saw_sources_p
5659 {
5660 my ($headers) = @_;
5662 # count all the sources
5663 my $count = 0;
5664 foreach my $val (values %extension_seen)
5665 {
5666 $count += $val;
5667 }
5669 if (!$headers)
5670 {
5671 $count -= count_files_for_language ('header');
5672 }
5674 return $count > 0;
5675 }
5678 # register_language (%ATTRIBUTE)
5679 # ------------------------------
5680 # Register a single language.
5681 # Each %ATTRIBUTE is of the form ATTRIBUTE => VALUE.
5682 sub register_language (%)
5683 {
5684 my (%option) = @_;
5686 # Set the defaults.
5687 $option{'ansi'} = 0
5688 unless defined $option{'ansi'};
5689 $option{'autodep'} = 'no'
5690 unless defined $option{'autodep'};
5691 $option{'linker'} = ''
5692 unless defined $option{'linker'};
5693 $option{'define_flag'} = 1
5694 unless defined $option{'define_flag'};
5696 my $lang = new Language (%option);
5698 # Fill indexes.
5699 grep ($extension_map{$_} = $lang->name, @{$lang->extensions});
5700 $languages{$lang->name} = $lang;
5702 # Update the pattern of known extensions.
5703 accept_extensions (@{$lang->extensions});
5704 }
5706 # derive_suffix ($EXT, $OBJ)
5707 # --------------------------
5708 # This function is used to find a path from a user-specified suffix $EXT
5709 # to $OBJ or to some other suffix we recognize internally, eg `cc'.
5710 sub derive_suffix ($$)
5711 {
5712 my ($source_ext, $obj) = @_;
5714 while (! $extension_map{$source_ext}
5715 && $source_ext ne $obj
5716 && defined $suffix_rules{$source_ext})
5717 {
5718 $source_ext = $suffix_rules{$source_ext};
5719 }
5721 return $source_ext;
5722 }
5725 ################################################################
5727 # Pretty-print something. HEAD is what should be printed at the
5728 # beginning of the first line, FILL is what should be printed at the
5729 # beginning of every subsequent line.
5730 sub pretty_print_internal
5731 {
5732 my ($head, $fill, @values) = @_;
5734 my $column = length ($head);
5735 my $result = $head;
5737 # Fill length is number of characters. However, each Tab
5738 # character counts for eight. So we count the number of Tabs and
5739 # multiply by 7.
5740 my $fill_length = length ($fill);
5741 $fill_length += 7 * ($fill =~ tr/\t/\t/d);
5743 foreach (@values)
5744 {
5745 # "71" because we also print a space.
5746 if ($column + length ($_) > 71)
5747 {
5748 $result .= " \\\n" . $fill;
5749 $column = $fill_length;
5750 }
5751 $result .= ' ' if $result =~ /\S\z/;
5752 $result .= $_;
5753 $column += length ($_) + 1;
5754 }
5756 $result .= "\n";
5757 return $result;
5758 }
5760 # Pretty-print something and append to output_vars.
5761 sub pretty_print
5762 {
5763 $output_vars .= &pretty_print_internal (@_);
5764 }
5766 # Pretty-print something and append to output_rules.
5767 sub pretty_print_rule
5768 {
5769 $output_rules .= &pretty_print_internal (@_);
5770 }
5773 ################################################################
5776 # $STRING
5777 # &conditional_string(@COND-STACK)
5778 # --------------------------------
5779 # Build a string which denotes the conditional in @COND-STACK. Some
5780 # simplifications are done: `TRUE' entries are elided, and any `FALSE'
5781 # entry results in a return of `FALSE'.
5782 sub conditional_string
5783 {
5784 my (@stack) = @_;
5786 if (grep (/^FALSE$/, @stack))
5787 {
5788 return 'FALSE';
5789 }
5790 else
5791 {
5792 return join (' ', uniq sort grep (!/^TRUE$/, @stack));
5793 }
5794 }
5797 # $BOOLEAN
5798 # &conditional_true_when ($COND, $WHEN)
5799 # -------------------------------------
5800 # See if a conditional is true. Both arguments are conditional
5801 # strings. This returns true if the first conditional is true when
5802 # the second conditional is true.
5803 # For instance with $COND = `BAR FOO', and $WHEN = `BAR BAZ FOO',
5804 # obviously return 1, and 0 when, for instance, $WHEN = `FOO'.
5805 sub conditional_true_when ($$)
5806 {
5807 my ($cond, $when) = @_;
5809 # Make a hash holding all the values from $WHEN.
5810 my %cond_vals = map { $_ => 1 } split (' ', $when);
5812 # Check each component of $cond, which looks `COND1 COND2'.
5813 foreach my $comp (split (' ', $cond))
5814 {
5815 # TRUE is always true.
5816 next if $comp eq 'TRUE';
5817 return 0 if ! defined $cond_vals{$comp};
5818 }
5820 return 1;
5821 }
5824 # $BOOLEAN
5825 # &conditional_is_redundant ($COND, @WHENS)
5826 # ----------------------------------------
5827 # Determine whether $COND is redundant with respect to @WHENS.
5828 #
5829 # Returns true if $COND is true for any of the conditions in @WHENS.
5830 #
5831 # If there are no @WHENS, then behave as if @WHENS contained a single empty
5832 # condition.
5833 sub conditional_is_redundant ($@)
5834 {
5835 my ($cond, @whens) = @_;
5837 if (@whens == 0)
5838 {
5839 return 1 if conditional_true_when ($cond, "");
5840 }
5841 else
5842 {
5843 foreach my $when (@whens)
5844 {
5845 return 1 if conditional_true_when ($cond, $when);
5846 }
5847 }
5849 return 0;
5850 }
5853 # $NEGATION
5854 # condition_negate ($COND)
5855 # ------------------------
5856 sub condition_negate ($)
5857 {
5858 my ($cond) = @_;
5860 $cond =~ s/TRUE$/TRUEO/;
5861 $cond =~ s/FALSE$/TRUE/;
5862 $cond =~ s/TRUEO$/FALSE/;
5864 return $cond;
5865 }
5868 # Compare condition names.
5869 # Issue them in alphabetical order, foo_TRUE before foo_FALSE.
5870 sub by_condition
5871 {
5872 # Be careful we might be comparing `' or `#'.
5873 $a =~ /^(.*)_(TRUE|FALSE)$/;
5874 my ($aname, $abool) = ($1 || '', $2 || '');
5875 $b =~ /^(.*)_(TRUE|FALSE)$/;
5876 my ($bname, $bbool) = ($1 || '', $2 || '');
5877 return ($aname cmp $bname
5878 # Don't bother with IFs, given that TRUE is after FALSE
5879 # just cmp in the reverse order.
5880 || $bbool cmp $abool
5881 # Just in case...
5882 || $a cmp $b);
5883 }
5886 # &make_condition (@CONDITIONS)
5887 # -----------------------------
5888 # Transform a list of conditions (themselves can be an internal list
5889 # of conditions, e.g., @CONDITIONS = ('cond1 cond2', 'cond3')) into a
5890 # Make conditional (a pattern for AC_SUBST).
5891 # Correctly returns the empty string when there are no conditions.
5892 sub make_condition
5893 {
5894 my $res = conditional_string (@_);
5896 # There are no conditions.
5897 if ($res eq '')
5898 {
5899 # Nothing to do.
5900 }
5901 # It's impossible.
5902 elsif ($res eq 'FALSE')
5903 {
5904 $res = '#';
5905 }
5906 # Build it.
5907 else
5908 {
5909 $res = '@' . $res . '@';
5910 $res =~ s/ /@@/g;
5911 }
5913 return $res;
5914 }
5918 ## ------------------------------ ##
5919 ## Handling the condition stack. ##
5920 ## ------------------------------ ##
5923 # $COND_STRING
5924 # cond_stack_if ($NEGATE, $COND, $WHERE)
5925 # --------------------------------------
5926 sub cond_stack_if ($$$)
5927 {
5928 my ($negate, $cond, $where) = @_;
5930 file_error ($where, "$cond does not appear in AM_CONDITIONAL")
5931 if ! $configure_cond{$cond} && $cond !~ /^TRUE|FALSE$/;
5933 $cond = "${cond}_TRUE"
5934 unless $cond =~ /^TRUE|FALSE$/;
5935 $cond = condition_negate ($cond)
5936 if $negate;
5938 push (@cond_stack, $cond);
5940 return conditional_string (@cond_stack);
5941 }
5944 # $COND_STRING
5945 # cond_stack_else ($NEGATE, $COND, $WHERE)
5946 # ----------------------------------------
5947 sub cond_stack_else ($$$)
5948 {
5949 my ($negate, $cond, $where) = @_;
5951 if (! @cond_stack)
5952 {
5953 file_error ($where, "else without if");
5954 return;
5955 }
5957 $cond_stack[$#cond_stack] = condition_negate ($cond_stack[$#cond_stack]);
5959 # If $COND is given, check against it.
5960 if (defined $cond)
5961 {
5962 $cond = "${cond}_TRUE"
5963 unless $cond =~ /^TRUE|FALSE$/;
5964 $cond = condition_negate ($cond)
5965 if $negate;
5967 file_error ($where,
5968 "else reminder ($negate$cond) incompatible with "
5969 . "current conditional: $cond_stack[$#cond_stack]")
5970 if $cond_stack[$#cond_stack] ne $cond;
5971 }
5973 return conditional_string (@cond_stack);
5974 }
5977 # $COND_STRING
5978 # cond_stack_endif ($NEGATE, $COND, $WHERE)
5979 # -----------------------------------------
5980 sub cond_stack_endif ($$$)
5981 {
5982 my ($negate, $cond, $where) = @_;
5983 my $old_cond;
5985 if (! @cond_stack)
5986 {
5987 file_error ($where, "endif without if: $negate$cond");
5988 return;
5989 }
5992 # If $COND is given, check against it.
5993 if (defined $cond)
5994 {
5995 $cond = "${cond}_TRUE"
5996 unless $cond =~ /^TRUE|FALSE$/;
5997 $cond = condition_negate ($cond)
5998 if $negate;
6000 file_error ($where,
6001 "endif reminder ($negate$cond) incompatible with "
6002 . "current conditional: $cond_stack[$#cond_stack]")
6003 if $cond_stack[$#cond_stack] ne $cond;
6004 }
6006 pop @cond_stack;
6008 return conditional_string (@cond_stack);
6009 }
6015 ## ------------------------ ##
6016 ## Handling the variables. ##
6017 ## ------------------------ ##
6020 # check_ambiguous_conditional ($VAR, $COND)
6021 # -----------------------------------------
6022 # Check for an ambiguous conditional. This is called when a variable
6023 # is being defined conditionally. If we already know about a
6024 # definition that is true under the same conditions, then we have an
6025 # ambiguity.
6026 sub check_ambiguous_conditional ($$)
6027 {
6028 my ($var, $cond) = @_;
6029 my $message = conditional_ambiguous_p ($var, $cond);
6030 if ($message ne '')
6031 {
6032 macro_error ($var, $message);
6033 macro_dump ($var);
6034 }
6035 }
6037 # $STRING
6038 # conditional_ambiguous_p ($VAR, $COND)
6039 # -------------------------------------
6040 # Check for an ambiguous conditional. Return an error message if we
6041 # have one, the empty string otherwise.
6042 sub conditional_ambiguous_p ($$)
6043 {
6044 my ($var, $cond) = @_;
6045 foreach my $vcond (keys %{$var_value{$var}})
6046 {
6047 my $message;
6048 if ($vcond eq $cond)
6049 {
6050 return "$var multiply defined in condition $cond";
6051 }
6052 elsif (&conditional_true_when ($vcond, $cond))
6053 {
6054 return ("$var was already defined in condition $vcond, "
6055 . "which implies condition $cond");
6056 }
6057 elsif (&conditional_true_when ($cond, $vcond))
6058 {
6059 return ("$var was already defined in condition $vcond, "
6060 . "which is implied by condition $cond");
6061 }
6062 }
6064 return '';
6065 }
6068 # ¯o_define($VAR, $VAR_IS_AM, $TYPE, $COND, $VALUE, $WHERE)
6069 # -------------------------------------------------------------
6070 # The $VAR can go from Automake to user, but not the converse.
6071 sub macro_define ($$$$$$)
6072 {
6073 my ($var, $var_is_am, $type, $cond, $value, $where) = @_;
6075 file_error ($where, "bad macro name `$var'")
6076 if $var !~ /$MACRO_PATTERN/o;
6078 $cond ||= 'TRUE';
6080 # An Automake variable must be consistently defined with the same
6081 # sign by Automake. A user variable must be set by either `=' or
6082 # `:=', and later promoted to `+='.
6083 if ($var_is_am)
6084 {
6085 if (defined $var_type{$var} && $var_type{$var} ne $type)
6086 {
6087 file_error ($where,
6088 ("$var was set with `$var_type{$var}=' "
6089 . "and is now set with `$type='"));
6090 }
6091 }
6092 else
6093 {
6094 if (!defined $var_type{$var} && $type eq '+')
6095 {
6096 file_error ($where, "$var must be set with `=' before using `+='");
6097 }
6098 }
6099 $var_type{$var} = $type;
6101 # When adding, since we rewrite, don't try to preserve the
6102 # Automake continuation backslashes.
6103 $value =~ s/\\$//mg
6104 if $type eq '+' && $var_is_am;
6106 # Differentiate the first assignment (including with `+=').
6107 if ($type eq '+' && defined $var_value{$var}{$cond})
6108 {
6109 if (chomp $var_value{$var}{$cond})
6110 {
6111 # Insert a backslash before a trailing newline.
6112 $var_value{$var}{$cond} .= "\\\n";
6113 }
6114 elsif ($var_value{$var}{$cond})
6115 {
6116 # Insert a separator.
6117 $var_value{$var}{$cond} .= ' ';
6118 }
6119 $var_value{$var}{$cond} .= $value;
6120 }
6121 else
6122 {
6123 # The first assignment to a macro sets its location. Ideally I
6124 # suppose we would associate line numbers with random bits of text.
6125 # FIXME: We sometimes redefine some variables, but we want to keep
6126 # the original location. More subs are needed to handle
6127 # properly variables. Once this done, remove this hack.
6128 $var_location{$var} = $where
6129 unless defined $var_location{$var};
6131 # If Automake tries to override a value specified by the user,
6132 # just don't let it do.
6133 if (defined $var_value{$var}{$cond} && !$var_is_am{$var} && $var_is_am)
6134 {
6135 if ($verbose)
6136 {
6137 print STDERR "$me: refusing to override the user definition of:\n";
6138 macro_dump ($var);
6139 print STDERR "$me: with `$cond' => `$value'\n";
6140 }
6141 }
6142 else
6143 {
6144 # There must be no previous value unless the user is redefining
6145 # an Automake variable or an AC_SUBST variable for an existing
6146 # condition.
6147 check_ambiguous_conditional ($var, $cond)
6148 unless (($var_is_am{$var} && !$var_is_am
6149 || exists $configure_vars{$var})
6150 && exists $var_value{$var}{$cond});
6152 $var_value{$var}{$cond} = $value;
6153 }
6154 }
6156 # An Automake variable can be given to the user, but not the converse.
6157 if (! defined $var_is_am{$var} || !$var_is_am)
6158 {
6159 $var_is_am{$var} = $var_is_am;
6160 }
6162 # Call var_VAR_trigger if it's defined.
6163 # This hook helps to update some internal state *while*
6164 # parsing the file. For instance the handling of SUFFIXES
6165 # requires this (see var_SUFFIXES_trigger).
6166 my $var_trigger = "var_${var}_trigger";
6167 &$var_trigger($type, $value) if defined &$var_trigger;
6168 }
6171 # ¯o_delete ($VAR, [@CONDS])
6172 # ------------------------------
6173 # Forget about $VAR under the conditions @CONDS, or completely if
6174 # @CONDS is empty.
6175 sub macro_delete ($@)
6176 {
6177 my ($var, @conds) = @_;
6179 if (!@conds)
6180 {
6181 delete $var_value{$var};
6182 delete $var_location{$var};
6183 delete $var_is_am{$var};
6184 delete $var_comment{$var};
6185 delete $var_type{$var};
6186 }
6187 else
6188 {
6189 foreach my $cond (@conds)
6190 {
6191 delete $var_value{$var}{$cond};
6192 }
6193 }
6194 }
6197 # ¯o_dump ($VAR)
6198 # ------------------
6199 sub macro_dump ($)
6200 {
6201 my ($var) = @_;
6203 if (!exists $var_value{$var})
6204 {
6205 print STDERR " $var does not exist\n";
6206 }
6207 else
6208 {
6209 my $var_is_am = $var_is_am{$var} ? "Automake" : "User";
6210 my $where = (defined $var_location{$var}
6211 ? $var_location{$var} : "undefined");
6212 print STDERR "$var_comment{$var}"
6213 if defined $var_comment{$var};
6214 print STDERR " $var ($var_is_am, where = $where) $var_type{$var}=\n";
6215 print STDERR " {\n";
6216 foreach my $vcond (sort by_condition keys %{$var_value{$var}})
6217 {
6218 print STDERR " $vcond => $var_value{$var}{$vcond}\n";
6219 }
6220 print STDERR " }\n";
6221 }
6222 }
6225 # ¯os_dump ()
6226 # ---------------
6227 sub macros_dump ()
6228 {
6229 my ($var) = @_;
6231 print STDERR "%var_value =\n";
6232 print STDERR "{\n";
6233 foreach my $var (sort (keys %var_value))
6234 {
6235 macro_dump ($var);
6236 }
6237 print STDERR "}\n";
6238 }
6241 # $BOOLEAN
6242 # variable_defined ($VAR, [$COND])
6243 # ---------------------------------
6244 # See if a variable exists. $VAR is the variable name, and $COND is
6245 # the condition which we should check. If no condition is given, we
6246 # currently return true if the variable is defined under any
6247 # condition.
6248 sub variable_defined ($;$)
6249 {
6250 my ($var, $cond) = @_;
6252 # Unfortunately we can't just check for $var_value{VAR}{COND}
6253 # as this would make perl create $condition{VAR}, which we
6254 # don't want.
6255 if (!exists $var_value{$var})
6256 {
6257 macro_error ($var, "`$var' is a target; expected a variable")
6258 if defined $targets{$var};
6259 # The variable is not defined
6260 return 0;
6261 }
6263 # The variable is not defined for the given condition.
6264 return 0
6265 if $cond && !exists $var_value{$var}{$cond};
6267 # Even a var_value examination is good enough for us. FIXME:
6268 # really should maintain examined status on a per-condition basis.
6269 $content_seen{$var} = 1;
6270 return 1;
6271 }
6274 # $BOOLEAN
6275 # variable_assert ($VAR, $WHERE)
6276 # ------------------------------
6277 # Make sure a variable exists. $VAR is the variable name, and $WHERE
6278 # is the name of a macro which refers to $VAR.
6279 sub variable_assert ($$)
6280 {
6281 my ($var, $where) = @_;
6283 return 1
6284 if variable_defined $var;
6286 macro_error ($where, "variable `$var' not defined");
6288 return 0;
6289 }
6292 # Mark a variable as examined.
6293 sub examine_variable
6294 {
6295 my ($var) = @_;
6296 variable_defined ($var);
6297 }
6300 # &variable_conditions_recursive ($VAR)
6301 # -------------------------------------
6302 # Return the set of conditions for which a variable is defined.
6304 # If the variable is not defined conditionally, and is not defined in
6305 # terms of any variables which are defined conditionally, then this
6306 # returns the empty list.
6308 # If the variable is defined conditionally, but is not defined in
6309 # terms of any variables which are defined conditionally, then this
6310 # returns the list of conditions for which the variable is defined.
6312 # If the variable is defined in terms of any variables which are
6313 # defined conditionally, then this returns a full set of permutations
6314 # of the subvariable conditions. For example, if the variable is
6315 # defined in terms of a variable which is defined for COND_TRUE,
6316 # then this returns both COND_TRUE and COND_FALSE. This is
6317 # because we will need to define the variable under both conditions.
6318 sub variable_conditions_recursive ($)
6319 {
6320 my ($var) = @_;
6322 %vars_scanned = ();
6324 my @new_conds = variable_conditions_recursive_sub ($var, '');
6325 # Now we want to return all permutations of the subvariable
6326 # conditions.
6327 my %allconds = ();
6328 foreach my $item (@new_conds)
6329 {
6330 foreach (split (' ', $item))
6331 {
6332 s/^(.*)_(TRUE|FALSE)$/$1_TRUE/;
6333 $allconds{$_} = 1;
6334 }
6335 }
6336 @new_conds = variable_conditions_permutations (sort keys %allconds);
6338 my %uniqify;
6339 foreach my $cond (@new_conds)
6340 {
6341 my $reduce = variable_conditions_reduce (split (' ', $cond));
6342 next
6343 if $reduce eq 'FALSE';
6344 $uniqify{$cond} = 1;
6345 }
6347 # Note we cannot just do `return sort keys %uniqify', because this
6348 # function is sometimes used in a scalar context.
6349 my @uniq_list = sort by_condition keys %uniqify;
6350 return @uniq_list;
6351 }
6354 # @CONDS
6355 # variable_conditions ($VAR)
6356 # --------------------------
6357 # Get the list of conditions that a variable is defined with, without
6358 # recursing through the conditions of any subvariables.
6359 # Argument is $VAR: the variable to get the conditions of.
6360 # Returns the list of conditions.
6361 sub variable_conditions ($)
6362 {
6363 my ($var) = @_;
6364 my @conds = keys %{$var_value{$var}};
6365 return sort by_condition @conds;
6366 }
6369 # $BOOLEAN
6370 # &variable_conditionally_defined ($VAR)
6371 # --------------------------------------
6372 sub variable_conditionally_defined ($)
6373 {
6374 my ($var) = @_;
6375 foreach my $cond (variable_conditions_recursive ($var))
6376 {
6377 return 1
6378 unless $cond =~ /^TRUE|FALSE$/;
6379 }
6380 return 0;
6381 }
6385 # &variable_conditions_recursive_sub ($VAR, $PARENT)
6386 # -------------------------------------------------------
6387 # A subroutine of variable_conditions_recursive. This returns all the
6388 # conditions of $VAR, including those of any sub-variables.
6389 sub variable_conditions_recursive_sub
6390 {
6391 my ($var, $parent) = @_;
6392 my @new_conds = ();
6394 if (defined $vars_scanned{$var})
6395 {
6396 macro_error ($parent, "variable `$var' recursively defined");
6397 return ();
6398 }
6399 $vars_scanned{$var} = 1;
6401 my @this_conds = ();
6402 # Examine every condition under which $VAR is defined.
6403 foreach my $vcond (keys %{$var_value{$var}})
6404 {
6405 push (@this_conds, $vcond);
6407 # If $VAR references some other variable, then compute the
6408 # conditions for that subvariable.
6409 my @subvar_conds = ();
6410 foreach (split (' ', $var_value{$var}{$vcond}))
6411 {
6412 # If a comment seen, just leave.
6413 last if /^#/;
6415 # Handle variable substitutions.
6416 if (/^\$\{(.*)\}$/ || /^\$\((.*)\)$/)
6417 {
6418 my $varname = $1;
6419 if ($varname =~ /$SUBST_REF_PATTERN/o)
6420 {
6421 $varname = $1;
6422 }
6425 # Here we compute all the conditions under which the
6426 # subvariable is defined. Then we go through and add
6427 # $VCOND to each.
6428 my @svc = variable_conditions_recursive_sub ($varname, $var);
6429 foreach my $item (@svc)
6430 {
6431 my $val = conditional_string ($vcond, split (' ', $item));
6432 $val ||= 'TRUE';
6433 push (@subvar_conds, $val);
6434 }
6435 }
6436 }
6438 # If there are no conditional subvariables, then we want to
6439 # return this condition. Otherwise, we want to return the
6440 # permutations of the subvariables, taking into account the
6441 # conditions of $VAR.
6442 if (! @subvar_conds)
6443 {
6444 push (@new_conds, $vcond);
6445 }
6446 else
6447 {
6448 push (@new_conds, variable_conditions_reduce (@subvar_conds));
6449 }
6450 }
6452 # Unset our entry in vars_scanned. We only care about recursive
6453 # definitions.
6454 delete $vars_scanned{$var};
6456 # If we are being called on behalf of another variable, we need to
6457 # return all possible permutations of the conditions. We have
6458 # already handled everything in @this_conds along with their
6459 # subvariables. We now need to add any permutations that are not
6460 # in @this_conds.
6461 foreach my $this_cond (@this_conds)
6462 {
6463 my @perms =
6464 variable_conditions_permutations (split (' ', $this_cond));
6465 foreach my $perm (@perms)
6466 {
6467 my $ok = 1;
6468 foreach my $scan (@this_conds)
6469 {
6470 if (&conditional_true_when ($perm, $scan)
6471 || &conditional_true_when ($scan, $perm))
6472 {
6473 $ok = 0;
6474 last;
6475 }
6476 }
6477 next if ! $ok;
6479 # This permutation was not already handled, and is valid
6480 # for the parents.
6481 push (@new_conds, $perm);
6482 }
6483 }
6485 return @new_conds;
6486 }
6489 # Filter a list of conditionals so that only the exclusive ones are
6490 # retained. For example, if both `COND1_TRUE COND2_TRUE' and
6491 # `COND1_TRUE' are in the list, discard the latter.
6492 # If the list is empty, return TRUE
6493 sub variable_conditions_reduce
6494 {
6495 my (@conds) = @_;
6496 my @ret = ();
6497 my $cond;
6498 while(@conds > 0)
6499 {
6500 $cond = shift(@conds);
6502 # FALSE is absorbent.
6503 return 'FALSE'
6504 if $cond eq 'FALSE';
6506 if (!conditional_is_redundant ($cond, @ret, @conds))
6507 {
6508 push (@ret, $cond);
6509 }
6510 }
6512 return "TRUE" if @ret == 0;
6513 return @ret;
6514 }
6516 # @CONDS
6517 # invert_conditions (@CONDS)
6518 # --------------------------
6519 # Invert a list of conditionals. Returns a set of conditionals which
6520 # are never true for any of the input conditionals, and when taken
6521 # together with the input conditionals cover all possible cases.
6522 #
6523 # For example: invert_conditions("A_TRUE B_TRUE", "A_FALSE B_FALSE") will
6524 # return ("A_FALSE B_TRUE", "A_TRUE B_FALSE")
6525 sub invert_conditions
6526 {
6527 my (@conds) = @_;
6529 my @notconds = ();
6530 foreach my $cond (@conds)
6531 {
6532 foreach my $perm (variable_conditions_permutations (split(' ', $cond)))
6533 {
6534 push @notconds, $perm
6535 if ! conditional_is_redundant ($perm, @conds);
6536 }
6537 }
6538 return variable_conditions_reduce (@notconds);
6539 }
6541 # Return a list of permutations of a conditional string.
6542 sub variable_conditions_permutations
6543 {
6544 my (@comps) = @_;
6545 return ()
6546 if ! @comps;
6547 my $comp = shift (@comps);
6548 return variable_conditions_permutations (@comps)
6549 if $comp eq '';
6550 my $neg = condition_negate ($comp);
6552 my @ret;
6553 foreach my $sub (variable_conditions_permutations (@comps))
6554 {
6555 push (@ret, "$comp $sub");
6556 push (@ret, "$neg $sub");
6557 }
6558 if (! @ret)
6559 {
6560 push (@ret, $comp);
6561 push (@ret, $neg);
6562 }
6563 return @ret;
6564 }
6567 # $BOOL
6568 # &check_variable_defined_unconditionally($VAR, $PARENT)
6569 # ------------------------------------------------------
6570 # Warn if a variable is conditionally defined. This is called if we
6571 # are using the value of a variable.
6572 sub check_variable_defined_unconditionally ($$)
6573 {
6574 my ($var, $parent) = @_;
6575 foreach my $cond (keys %{$var_value{$var}})
6576 {
6577 next
6578 if $cond =~ /^TRUE|FALSE$/;
6580 if ($parent)
6581 {
6582 macro_error ($parent,
6583 "warning: automake does not support conditional definition of $var in $parent");
6584 }
6585 else
6586 {
6587 macro_error ($parent,
6588 "warning: automake does not support $var being defined conditionally");
6589 }
6590 }
6591 }
6594 # Get the TRUE value of a variable, warn if the variable is
6595 # conditionally defined.
6596 sub variable_value
6597 {
6598 my ($var) = @_;
6599 &check_variable_defined_unconditionally ($var);
6600 return $var_value{$var}{'TRUE'};
6601 }
6604 # @VALUES
6605 # &value_to_list ($VAR, $VAL, $COND)
6606 # ----------------------------------
6607 # Convert a variable value to a list, split as whitespace. This will
6608 # recursively follow $(...) and ${...} inclusions. It preserves @...@
6609 # substitutions.
6610 #
6611 # If COND is 'all', then all values under all conditions should be
6612 # returned; if COND is a particular condition (all conditions are
6613 # surrounded by @...@) then only the value for that condition should
6614 # be returned; otherwise, warn if VAR is conditionally defined.
6615 # SCANNED is a global hash listing whose keys are all the variables
6616 # already scanned; it is an error to rescan a variable.
6617 sub value_to_list ($$$)
6618 {
6619 my ($var, $val, $cond) = @_;
6620 my @result;
6622 # Strip backslashes
6623 $val =~ s/\\(\n|$)/ /g;
6625 foreach (split (' ', $val))
6626 {
6627 # If a comment seen, just leave.
6628 last if /^#/;
6630 # Handle variable substitutions.
6631 if (/^\$\{([^}]*)\}$/ || /^\$\(([^)]*)\)$/)
6632 {
6633 my $varname = $1;
6635 # If the user uses a losing variable name, just ignore it.
6636 # This isn't ideal, but people have requested it.
6637 next if ($varname =~ /\@.*\@/);
6639 my ($from, $to);
6640 my @temp_list;
6641 if ($varname =~ /$SUBST_REF_PATTERN/o)
6642 {
6643 $varname = $1;
6644 $to = $3;
6645 $from = quotemeta $2;
6646 }
6648 # Find the value.
6649 @temp_list =
6650 variable_value_as_list_recursive_worker ($1, $cond, $var);
6652 # Now rewrite the value if appropriate.
6653 if (defined $from)
6654 {
6655 grep (s/$from$/$to/, @temp_list);
6656 }
6658 push (@result, @temp_list);
6659 }
6660 else
6661 {
6662 push (@result, $_);
6663 }
6664 }
6666 return @result;
6667 }
6670 # @VALUES
6671 # variable_value_as_list ($VAR, $COND, $PARENT)
6672 # ---------------------------------------------
6673 # Get the value of a variable given a specified condition. without
6674 # recursing through any subvariables.
6675 # Arguments are:
6676 # $VAR is the variable
6677 # $COND is the condition. If this is not given, the value for the
6678 # "TRUE" condition will be returned.
6679 # $PARENT is the variable in which the variable is used: this is used
6680 # only for error messages.
6681 # Returns the list of conditions.
6682 # For example, if A is defined as "foo $(B) bar", and B is defined as
6683 # "baz", this will return ("foo", "$(B)", "bar")
6684 sub variable_value_as_list
6685 {
6686 my ($var, $cond, $parent) = @_;
6687 my @result;
6689 # Check defined
6690 return
6691 unless variable_assert $var, $parent;
6693 # Get value for given condition
6694 $cond ||= 'TRUE';
6695 my $onceflag;
6696 foreach my $vcond (keys %{$var_value{$var}})
6697 {
6698 my $val = $var_value{$var}{$vcond};
6700 if (&conditional_true_when ($vcond, $cond))
6701 {
6702 # Unless variable is not defined conditionally, there should only
6703 # be one value of $vcond true when $cond.
6704 &check_variable_defined_unconditionally ($var, $parent)
6705 if $onceflag;
6706 $onceflag = 1;
6708 # Strip backslashes
6709 $val =~ s/\\(\n|$)/ /g;
6711 foreach (split (' ', $val))
6712 {
6713 # If a comment seen, just leave.
6714 last if /^#/;
6716 push (@result, $_);
6717 }
6718 }
6719 }
6721 return @result;
6722 }
6725 # @VALUE
6726 # &variable_value_as_list_recursive_worker ($VAR, $COND, $PARENT)
6727 # ---------------------------------------------------------------
6728 # Return contents of VAR as a list, split on whitespace. This will
6729 # recursively follow $(...) and ${...} inclusions. It preserves @...@
6730 # substitutions. If COND is 'all', then all values under all
6731 # conditions should be returned; if COND is a particular condition
6732 # (all conditions are surrounded by @...@) then only the value for
6733 # that condition should be returned; otherwise, warn if VAR is
6734 # conditionally defined. If PARENT is specified, it is the name of
6735 # the including variable; this is only used for error reports.
6736 sub variable_value_as_list_recursive_worker ($$$)
6737 {
6738 my ($var, $cond, $parent) = @_;
6739 my @result = ();
6741 return
6742 unless variable_assert $var, $parent;
6744 if (defined $vars_scanned{$var})
6745 {
6746 # `vars_scanned' is a global we use to keep track of which
6747 # variables we've already examined.
6748 macro_error ($parent, "variable `$var' recursively defined");
6749 }
6750 elsif ($cond eq 'all')
6751 {
6752 $vars_scanned{$var} = 1;
6753 foreach my $vcond (keys %{$var_value{$var}})
6754 {
6755 my $val = $var_value{$var}{$vcond};
6756 push (@result, &value_to_list ($var, $val, $cond));
6757 }
6758 }
6759 else
6760 {
6761 $cond ||= 'TRUE';
6762 $vars_scanned{$var} = 1;
6763 my $onceflag;
6764 foreach my $vcond (keys %{$var_value{$var}})
6765 {
6766 my $val = $var_value{$var}{$vcond};
6767 if (&conditional_true_when ($vcond, $cond))
6768 {
6769 # Warn if we have an ambiguity. It's hard to know how
6770 # to handle this case correctly.
6771 &check_variable_defined_unconditionally ($var, $parent)
6772 if $onceflag;
6773 $onceflag = 1;
6774 push (@result, &value_to_list ($var, $val, $cond));
6775 }
6776 }
6777 }
6779 # Unset our entry in vars_scanned. We only care about recursive
6780 # definitions.
6781 delete $vars_scanned{$var};
6783 return @result;
6784 }
6787 # &variable_output ($VAR, [@CONDS])
6788 # ---------------------------------
6789 # Output all the values of $VAR is @COND is not specified, else only
6790 # that corresponding to @COND.
6791 sub variable_output ($@)
6792 {
6793 my ($var, @conds) = @_;
6795 @conds = keys %{$var_value{$var}}
6796 unless @conds;
6798 $output_vars .= $var_comment{$var}
6799 if defined $var_comment{$var};
6801 foreach my $cond (sort by_condition @conds)
6802 {
6803 my $val = $var_value{$var}{$cond};
6804 my $equals = $var_type{$var} eq ':' ? ':=' : '=';
6805 my $output_var = "$var $equals $val";
6806 $output_var =~ s/^/make_condition ($cond)/meg;
6807 $output_vars .= $output_var . "\n";
6808 }
6809 }
6812 # &variable_pretty_output ($VAR, [@CONDS])
6813 # ----------------------------------------
6814 # Likewise, but pretty, i.e., we *split* the values at spaces. Use only
6815 # with variables holding filenames.
6816 sub variable_pretty_output ($@)
6817 {
6818 my ($var, @conds) = @_;
6820 @conds = keys %{$var_value{$var}}
6821 unless @conds;
6823 $output_vars .= $var_comment{$var}
6824 if defined $var_comment{$var};
6826 foreach my $cond (sort by_condition @conds)
6827 {
6828 my $val = $var_value{$var}{$cond};
6829 my $equals = $var_type{$var} eq ':' ? ':=' : '=';
6830 my $make_condition = make_condition ($cond);
6831 $output_vars .= pretty_print_internal ("$make_condition$var $equals",
6832 "$make_condition\t",
6833 split (' ' , $val));
6834 }
6835 }
6838 # &variable_value_as_list_recursive ($VAR, $COND, $PARENT)
6839 # --------------------------------------------------------
6840 # This is just a wrapper for variable_value_as_list_recursive_worker that
6841 # initializes the global hash `vars_scanned'. This hash is used to
6842 # avoid infinite recursion.
6843 sub variable_value_as_list_recursive ($$@)
6844 {
6845 my ($var, $cond, $parent) = @_;
6846 %vars_scanned = ();
6847 return &variable_value_as_list_recursive_worker ($var, $cond, $parent);
6848 }
6851 # &define_pretty_variable ($VAR, $COND, @VALUE)
6852 # ---------------------------------------------
6853 # Like define_variable, but the value is a list, and the variable may
6854 # be defined conditionally. The second argument is the conditional
6855 # under which the value should be defined; this should be the empty
6856 # string to define the variable unconditionally. The third argument
6857 # is a list holding the values to use for the variable. The value is
6858 # pretty printed in the output file.
6859 sub define_pretty_variable ($$@)
6860 {
6861 my ($var, $cond, @value) = @_;
6863 # Beware that an empty $cond has a different semantics for
6864 # macro_define and variable_pretty_output.
6865 $cond ||= 'TRUE';
6867 if (! variable_defined ($var, $cond))
6868 {
6869 macro_define ($var, 1, '', $cond, "@value", undef);
6870 variable_pretty_output ($var, $cond || 'TRUE');
6871 $content_seen{$var} = 1;
6872 }
6873 }
6876 # define_variable ($VAR, $VALUE)
6877 # ------------------------------
6878 # Define a new user variable VAR to VALUE, but only if not already defined.
6879 sub define_variable ($$)
6880 {
6881 my ($var, $value) = @_;
6882 define_pretty_variable ($var, 'TRUE', $value);
6883 }
6886 # Like define_variable, but define a variable to be the configure
6887 # substitution by the same name.
6888 sub define_configure_variable ($)
6889 {
6890 my ($var) = @_;
6891 if (! variable_defined ($var, 'TRUE'))
6892 {
6893 # A macro defined via configure is a `user' macro -- we should not
6894 # override it.
6895 macro_define ($var, 0, '', 'TRUE', subst $var, $configure_vars{$var});
6896 variable_pretty_output ($var, 'TRUE');
6897 }
6898 }
6901 # define_compiler_variable ($LANG)
6902 # --------------------------------
6903 # Define a compiler variable. We also handle defining the `LT'
6904 # version of the command when using libtool.
6905 sub define_compiler_variable ($)
6906 {
6907 my ($lang) = @_;
6909 my ($var, $value) = ($lang->compiler, $lang->compile);
6910 &define_variable ($var, $value);
6911 &define_variable ("LT$var", "\$(LIBTOOL) --mode=compile $value")
6912 if $seen_libtool;
6913 }
6916 # define_linker_variable ($LANG)
6917 # ------------------------------
6918 # Define linker variables.
6919 sub define_linker_variable ($)
6920 {
6921 my ($lang) = @_;
6923 my ($var, $value) = ($lang->lder, $lang->ld);
6924 # CCLD = $(CC).
6925 &define_variable ($lang->lder, $lang->ld);
6926 # CCLINK = $(CCLD) blah blah...
6927 &define_variable ($lang->linker,
6928 (($seen_libtool ? '$(LIBTOOL) --mode=link ' : '')
6929 . $lang->link));
6930 }
6932 ################################################################
6934 ## ---------------- ##
6935 ## Handling rules. ##
6936 ## ---------------- ##
6938 # $BOOL
6939 # rule_define ($TARGET, $IS_AM, $COND, $WHERE)
6940 # --------------------------------------------
6941 # Define a new rule. $TARGET is the rule name. $IS_AM is a boolean
6942 # which is true if the new rule is defined by the user. $COND is the
6943 # condition under which the rule is defined. $WHERE is where the rule
6944 # is defined (file name or line number). Returns true if it is ok to
6945 # define the rule, false otherwise.
6946 sub rule_define ($$$$)
6947 {
6948 my ($target, $rule_is_am, $cond, $where) = @_;
6950 # For now `foo:' will override `foo$(EXEEXT):'. This is temporary,
6951 # though, so we emit a warning.
6952 (my $noexe = $target) =~ s,\$\(EXEEXT\)$,,;
6953 if ($noexe ne $target && defined $targets{$noexe})
6954 {
6955 # The no-exeext option enables this feature.
6956 if (! defined $options{'no-exeext'})
6957 {
6958 macro_error ($noexe,
6959 "deprecated feature: `$noexe' overrides `$noexe\$(EXEEXT)'\nchange your target to read `$noexe\$(EXEEXT)'");
6960 }
6961 # Don't define.
6962 return 0;
6963 }
6965 if (defined $targets{$target}
6966 && ($cond
6967 ? ! defined $target_conditional{$target}
6968 : defined $target_conditional{$target}))
6969 {
6970 target_error ($target,
6971 "$target defined both conditionally and unconditionally");
6972 }
6974 # Value here doesn't matter; for targets we only note existence.
6975 $targets{$target} = $where;
6976 if ($cond)
6977 {
6978 if ($target_conditional{$target})
6979 {
6980 &check_ambiguous_conditional ($target, $cond);
6981 }
6982 $target_conditional{$target}{$cond} = $where;
6983 }
6985 # Check the rule for being a suffix rule. If so, store in a hash.
6986 # Either it's a rule for two known extensions...
6987 if ($target =~ /^($KNOWN_EXTENSIONS_PATTERN)($KNOWN_EXTENSIONS_PATTERN)$/
6988 # ...or it's a rule with unknown extensions (.i.e, the rule looks like
6989 # `.foo.bar:' but `.foo' or `.bar' are not declared in SUFFIXES
6990 # and are not known language extensions).
6991 # Automake will complete SUFFIXES from @suffixes automatically
6992 # (see handle_footer).
6993 || ($target =~ /$SUFFIX_RULE_PATTERN/o && accept_extensions($1)))
6994 {
6995 my $internal_ext = $2;
6997 # When tranforming sources to objects, Automake uses the
6998 # %suffix_rules to move from each source extension to
6999 # `.$(OBJEXT)', not to `.o' or `.obj'. However some people
7000 # define suffix rules for `.o' or `.obj', so internally we will
7001 # consider these extensions equivalent to `.$(OBJEXT)'. We
7002 # CANNOT rewrite the target (i.e., automagically replace `.o'
7003 # and `.obj' by `.$(OBJEXT)' in the output), or warn the user
7004 # that (s)he'd better use `.$(OBJEXT)', because Automake itself
7005 # output suffix rules for `.o' or `.obj'...
7006 $internal_ext = '.$(OBJEXT)' if ($2 eq '.o' || $2 eq '.obj');
7008 $suffix_rules{$1} = $internal_ext;
7009 verbose "Sources ending in $1 become $2";
7010 push @suffixes, $1, $2;
7011 }
7013 return 1;
7014 }
7017 # See if a target exists.
7018 sub target_defined
7019 {
7020 my ($target) = @_;
7021 return defined $targets{$target};
7022 }
7025 ################################################################
7027 # &append_comments ($VARIABLE, $SPACING, $COMMENT)
7028 # ------------------------------------------------
7029 # Apped $COMMENT to the other comments for $VARIABLE, using
7030 # $SPACING as separator.
7031 sub append_comments ($$$)
7032 {
7033 my ($var, $spacing, $comment) = @_;
7034 $var_comment{$var} .= $spacing
7035 if (!defined $var_comment{$var} || $var_comment{$var} !~ /\n$/o);
7036 $var_comment{$var} .= $comment;
7037 }
7040 # &read_am_file ($AMFILE)
7041 # -----------------------
7042 # Read Makefile.am and set up %contents. Simultaneously copy lines
7043 # from Makefile.am into $output_trailer or $output_vars as
7044 # appropriate. NOTE we put rules in the trailer section. We want
7045 # user rules to come after our generated stuff.
7046 sub read_am_file ($)
7047 {
7048 my ($amfile) = @_;
7050 my $am_file = new Automake::XFile ("< $amfile");
7051 verbose "reading $amfile";
7053 my $spacing = '';
7054 my $comment = '';
7055 my $blank = 0;
7056 my $saw_bk = 0;
7058 use constant IN_VAR_DEF => 0;
7059 use constant IN_RULE_DEF => 1;
7060 use constant IN_COMMENT => 2;
7061 my $prev_state = IN_RULE_DEF;
7063 while ($_ = $am_file->getline)
7064 {
7065 if (/$IGNORE_PATTERN/o)
7066 {
7067 # Merely delete comments beginning with two hashes.
7068 }
7069 elsif (/$WHITE_PATTERN/o)
7070 {
7071 file_error ("$amfile:$.",
7072 "blank line following trailing backslash")
7073 if $saw_bk;
7074 # Stick a single white line before the incoming macro or rule.
7075 $spacing = "\n";
7076 $blank = 1;
7077 # Flush all comments seen so far.
7078 if ($comment ne '')
7079 {
7080 $output_vars .= $comment;
7081 $comment = '';
7082 }
7083 }
7084 elsif (/$COMMENT_PATTERN/o)
7085 {
7086 # Stick comments before the incoming macro or rule. Make
7087 # sure a blank line preceeds first block of comments.
7088 $spacing = "\n" unless $blank;
7089 $blank = 1;
7090 $comment .= $spacing . $_;
7091 $spacing = '';
7092 $prev_state = IN_COMMENT;
7093 }
7094 else
7095 {
7096 last;
7097 }
7098 $saw_bk = /\\$/ && ! /$IGNORE_PATTERN/o;
7099 }
7101 # We save the conditional stack on entry, and then check to make
7102 # sure it is the same on exit. This lets us conditonally include
7103 # other files.
7104 my @saved_cond_stack = @cond_stack;
7105 my $cond = conditional_string (@cond_stack);
7107 my $last_var_name = '';
7108 my $last_var_type = '';
7109 my $last_var_value = '';
7110 # FIXME: shouldn't use $_ in this loop; it is too big.
7111 while ($_)
7112 {
7113 my $here = "$amfile:$.";
7115 # Make sure the line is \n-terminated.
7116 chomp;
7117 $_ .= "\n";
7119 # Don't look at MAINTAINER_MODE_TRUE here. That shouldn't be
7120 # used by users. @MAINT@ is an anachronism now.
7121 $_ =~ s/\@MAINT\@//g
7122 unless $seen_maint_mode;
7124 my $new_saw_bk = /\\$/ && ! /$IGNORE_PATTERN/o;
7126 if (/$IGNORE_PATTERN/o)
7127 {
7128 # Merely delete comments beginning with two hashes.
7129 }
7130 elsif (/$WHITE_PATTERN/o)
7131 {
7132 # Stick a single white line before the incoming macro or rule.
7133 $spacing = "\n";
7134 file_error ($here, "blank line following trailing backslash")
7135 if $saw_bk;
7136 }
7137 elsif (/$COMMENT_PATTERN/o)
7138 {
7139 # Stick comments before the incoming macro or rule.
7140 $comment .= $spacing . $_;
7141 $spacing = '';
7142 file_error ($here, "comment following trailing backslash")
7143 if $saw_bk && $comment eq '';
7144 $prev_state = IN_COMMENT;
7145 }
7146 elsif ($saw_bk)
7147 {
7148 if ($prev_state == IN_RULE_DEF)
7149 {
7150 $output_trailer .= &make_condition (@cond_stack);
7151 $output_trailer .= $_;
7152 }
7153 elsif ($prev_state == IN_COMMENT)
7154 {
7155 # If the line doesn't start with a `#', add it.
7156 # We do this because a continuated comment like
7157 # # A = foo \
7158 # bar \
7159 # baz
7160 # is not portable. BSD make doesn't honor
7161 # escaped newlines in comments.
7162 s/^#?/#/;
7163 $comment .= $spacing . $_;
7164 }
7165 else # $prev_state == IN_VAR_DEF
7166 {
7167 $last_var_value .= ' '
7168 unless $last_var_value =~ /\s$/;
7169 $last_var_value .= $_;
7171 if (!/\\$/)
7172 {
7173 append_comments $last_var_name, $spacing, $comment;
7174 $comment = $spacing = '';
7175 macro_define ($last_var_name, 0,
7176 $last_var_type, $cond,
7177 $last_var_value, $here)
7178 if $cond ne 'FALSE';
7179 push (@var_list, $last_var_name);
7180 }
7181 }
7182 }
7184 elsif (/$IF_PATTERN/o)
7185 {
7186 $cond = cond_stack_if ($1, $2, $here);
7187 }
7188 elsif (/$ELSE_PATTERN/o)
7189 {
7190 $cond = cond_stack_else ($1, $2, $here);
7191 }
7192 elsif (/$ENDIF_PATTERN/o)
7193 {
7194 $cond = cond_stack_endif ($1, $2, $here);
7195 }
7197 elsif (/$RULE_PATTERN/o)
7198 {
7199 # Found a rule.
7200 $prev_state = IN_RULE_DEF;
7202 rule_define ($1, 0, $cond, $here);
7204 $output_trailer .= $comment . $spacing;
7205 $output_trailer .= &make_condition (@cond_stack);
7206 $output_trailer .= $_;
7207 $comment = $spacing = '';
7208 }
7209 elsif (/$ASSIGNMENT_PATTERN/o)
7210 {
7211 # Found a macro definition.
7212 $prev_state = IN_VAR_DEF;
7213 $last_var_name = $1;
7214 $last_var_type = $2;
7215 $last_var_value = $3;
7216 if ($3 ne '' && substr ($3, -1) eq "\\")
7217 {
7218 # We preserve the `\' because otherwise the long lines
7219 # that are generated will be truncated by broken
7220 # `sed's.
7221 $last_var_value = $3 . "\n";
7222 }
7224 if (!/\\$/)
7225 {
7226 # FIXME: this doesn't always work correctly; it will
7227 # group all comments for a given variable, no matter
7228 # where defined.
7229 # Accumulating variables must not be output.
7230 append_comments $last_var_name, $spacing, $comment;
7231 $comment = $spacing = '';
7233 macro_define ($last_var_name, 0,
7234 $last_var_type, $cond,
7235 $last_var_value, $here)
7236 if $cond ne 'FALSE';
7237 push (@var_list, $last_var_name);
7238 }
7239 }
7240 elsif (/$INCLUDE_PATTERN/o)
7241 {
7242 my $path = $1;
7244 if ($path =~ s/^\$\(top_srcdir\)\///)
7245 {
7246 push (@include_stack, "\$\(top_srcdir\)/$path");
7247 }
7248 else
7249 {
7250 $path =~ s/\$\(srcdir\)\///;
7251 push (@include_stack, "\$\(srcdir\)/$path");
7252 $path = $relative_dir . "/" . $path;
7253 }
7254 &read_am_file ($path);
7255 }
7256 else
7257 {
7258 # This isn't an error; it is probably a continued rule.
7259 # In fact, this is what we assume.
7260 $prev_state = IN_RULE_DEF;
7261 $output_trailer .= $comment . $spacing;
7262 $output_trailer .= &make_condition (@cond_stack);
7263 $output_trailer .= $_;
7264 $comment = $spacing = '';
7265 file_error ($here, "`#' comment at start of rule is unportable")
7266 if $_ =~ /^\t\s*\#/;
7267 }
7269 $saw_bk = $new_saw_bk;
7270 $_ = $am_file->getline;
7271 }
7273 $output_trailer .= $comment;
7275 if ("@saved_cond_stack" ne "@cond_stack")
7276 {
7277 if (@cond_stack)
7278 {
7279 &am_error ("unterminated conditionals: @cond_stack");
7280 }
7281 else
7282 {
7283 # FIXME: better error message here.
7284 &am_error ("conditionals not nested in include file");
7285 }
7286 }
7287 }
7290 # define_standard_variables ()
7291 # ----------------------------
7292 # A helper for read_main_am_file which initializes configure variables
7293 # and variables from header-vars.am. This is a subr so we can call it
7294 # twice.
7295 sub define_standard_variables
7296 {
7297 my $saved_output_vars = $output_vars;
7298 my ($comments, undef, $rules) =
7299 file_contents_internal (1, "$libdir/am/header-vars.am");
7301 # This will output the definitions in $output_vars, which we don't
7302 # want...
7303 foreach my $var (sort keys %configure_vars)
7304 {
7305 &define_configure_variable ($var);
7306 push (@var_list, $var);
7307 }
7309 # ... hence, we restore $output_vars.
7310 $output_vars = $saved_output_vars . $comments . $rules;
7311 }
7313 # Read main am file.
7314 sub read_main_am_file
7315 {
7316 my ($amfile) = @_;
7318 # This supports the strange variable tricks we are about to play.
7319 if (scalar keys %var_value > 0)
7320 {
7321 macros_dump ();
7322 prog_error ("variable defined before read_main_am_file");
7323 }
7325 # Generate copyright header for generated Makefile.in.
7326 # We do discard the output of predefined variables, handled below.
7327 $output_vars = ("# $in_file_name generated by automake "
7328 . $VERSION . " from $am_file_name.\n");
7329 $output_vars .= '# ' . subst ('configure_input') . "\n";
7330 $output_vars .= $gen_copyright;
7332 # We want to predefine as many variables as possible. This lets
7333 # the user set them with `+=' in Makefile.am. However, we don't
7334 # want these initial definitions to end up in the output quite
7335 # yet. So we just load them, but output them later.
7336 &define_standard_variables;
7338 # Read user file, which might override some of our values.
7339 &read_am_file ($amfile);
7341 # Output all the Automake variables. If the user changed one,
7342 # then it is now marked as owned by the user.
7343 foreach my $var (uniq @var_list)
7344 {
7345 # Don't process user variables.
7346 variable_output ($var)
7347 unless !$var_is_am{$var};
7348 }
7350 # Now dump the user variables that were defined. We do it in the same
7351 # order in which they were defined (skipping duplicates).
7352 foreach my $var (uniq @var_list)
7353 {
7354 # Don't process Automake variables.
7355 variable_output ($var)
7356 unless $var_is_am{$var};
7357 }
7358 }
7360 ################################################################
7362 # $FLATTENED
7363 # &flatten ($STRING)
7364 # ------------------
7365 # Flatten the $STRING and return the result.
7366 sub flatten
7367 {
7368 $_ = shift;
7370 s/\\\n//somg;
7371 s/\s+/ /g;
7372 s/^ //;
7373 s/ $//;
7375 return $_;
7376 }
7379 # @PARAGRAPHS
7380 # &make_paragraphs ($MAKEFILE, [%TRANSFORM])
7381 # ------------------------------------------
7382 # Load a $MAKEFILE, apply the %TRANSFORM, and return it as a list of
7383 # paragraphs.
7384 sub make_paragraphs ($%)
7385 {
7386 my ($file, %transform) = @_;
7388 # Complete %transform with global options and make it a Perl
7389 # $command.
7390 my $command =
7391 "s/$IGNORE_PATTERN//gm;"
7392 . transform (%transform,
7394 'CYGNUS' => $cygnus_mode,
7395 'MAINTAINER-MODE'
7396 => $seen_maint_mode ? subst ('MAINTAINER_MODE_TRUE') : '',
7398 'SHAR' => $options{'dist-shar'} || 0,
7399 'BZIP2' => $options{'dist-bzip2'} || 0,
7400 'ZIP' => $options{'dist-zip'} || 0,
7401 'COMPRESS' => $options{'dist-tarZ'} || 0,
7403 'INSTALL-INFO' => !$options{'no-installinfo'},
7404 'INSTALL-MAN' => !$options{'no-installman'},
7405 'CK-NEWS' => $options{'check-news'} || 0,
7407 'SUBDIRS' => variable_defined ('SUBDIRS'),
7408 'TOPDIR' => backname ($relative_dir),
7409 'TOPDIR_P' => $relative_dir eq '.',
7410 'CONFIGURE-AC' => $configure_ac,
7412 'BUILD' => $seen_canonical == AC_CANONICAL_SYSTEM,
7413 'HOST' => $seen_canonical,
7414 'TARGET' => $seen_canonical == AC_CANONICAL_SYSTEM,
7416 'LIBTOOL' => defined $configure_vars{'LIBTOOL'})
7417 # We don't need more than two consecutive new-lines.
7418 . 's/\n{3,}/\n\n/g';
7420 # Swallow the file and apply the COMMAND.
7421 my $fc_file = new Automake::XFile "< $file";
7422 # Looks stupid?
7423 verbose "reading $file";
7424 my $saved_dollar_slash = $/;
7425 undef $/;
7426 $_ = $fc_file->getline;
7427 $/ = $saved_dollar_slash;
7428 eval $command;
7429 $fc_file->close;
7430 my $content = $_;
7432 # Split at unescaped new lines.
7433 my @lines = split (/(?<!\\)\n/, $content);
7434 my @res;
7436 while (defined ($_ = shift @lines))
7437 {
7438 my $paragraph = "$_";
7439 # If we are a rule, eat as long as we start with a tab.
7440 if (/$RULE_PATTERN/smo)
7441 {
7442 while (defined ($_ = shift @lines) && $_ =~ /^\t/)
7443 {
7444 $paragraph .= "\n$_";
7445 }
7446 unshift (@lines, $_);
7447 }
7449 # If we are a comments, eat as much comments as you can.
7450 elsif (/$COMMENT_PATTERN/smo)
7451 {
7452 while (defined ($_ = shift @lines)
7453 && $_ =~ /$COMMENT_PATTERN/smo)
7454 {
7455 $paragraph .= "\n$_";
7456 }
7457 unshift (@lines, $_);
7458 }
7460 push @res, $paragraph;
7461 $paragraph = '';
7462 }
7464 return @res;
7465 }
7469 # ($COMMENT, $VARIABLES, $RULES)
7470 # &file_contents_internal ($IS_AM, $FILE, [%TRANSFORM])
7471 # -----------------------------------------------------
7472 # Return contents of a file from $libdir/am, automatically skipping
7473 # macros or rules which are already known. $IS_AM iff the caller is
7474 # reading an Automake file (as opposed to the user's Makefile.am).
7475 sub file_contents_internal ($$%)
7476 {
7477 my ($is_am, $file, %transform) = @_;
7479 my $result_vars = '';
7480 my $result_rules = '';
7481 my $comment = '';
7482 my $spacing = '';
7484 # The following flags are used to track rules spanning across
7485 # multiple paragraphs.
7486 my $is_rule = 0; # 1 if we are processing a rule.
7487 my $discard_rule = 0; # 1 if the current rule should not be output.
7489 # We save the conditional stack on entry, and then check to make
7490 # sure it is the same on exit. This lets us conditonally include
7491 # other files.
7492 my @saved_cond_stack = @cond_stack;
7493 my $cond = conditional_string (@cond_stack);
7495 foreach (make_paragraphs ($file, %transform))
7496 {
7497 # Sanity checks.
7498 file_error ($file, "blank line following trailing backslash:\n$_")
7499 if /\\$/;
7500 file_error ($file, "comment following trailing backslash:\n$_")
7501 if /\\#/;
7503 if (/^$/)
7504 {
7505 $is_rule = 0;
7506 # Stick empty line before the incoming macro or rule.
7507 $spacing = "\n";
7508 }
7509 elsif (/$COMMENT_PATTERN/mso)
7510 {
7511 $is_rule = 0;
7512 # Stick comments before the incoming macro or rule.
7513 $comment = "$_\n";
7514 }
7516 # Handle inclusion of other files.
7517 elsif (/$INCLUDE_PATTERN/o)
7518 {
7519 if ($cond ne 'FALSE')
7520 {
7521 my $file = ($is_am ? "$libdir/am/" : '') . $1;
7522 # N-ary `.=' fails.
7523 my ($com, $vars, $rules)
7524 = file_contents_internal ($is_am, $file, %transform);
7525 $comment .= $com;
7526 $result_vars .= $vars;
7527 $result_rules .= $rules;
7528 }
7529 }
7531 # Handling the conditionals.
7532 elsif (/$IF_PATTERN/o)
7533 {
7534 $cond = cond_stack_if ($1, $2, $file);
7535 }
7536 elsif (/$ELSE_PATTERN/o)
7537 {
7538 $cond = cond_stack_else ($1, $2, $file);
7539 }
7540 elsif (/$ENDIF_PATTERN/o)
7541 {
7542 $cond = cond_stack_endif ($1, $2, $file);
7543 }
7545 # Handling rules.
7546 elsif (/$RULE_PATTERN/mso)
7547 {
7548 $is_rule = 1;
7549 $discard_rule = 0;
7550 # Separate relationship from optional actions: the first
7551 # `new-line tab" not preceded by backslash (continuation
7552 # line).
7553 # I'm quite shoked! It seems that (\\\n|[^\n]) is not the
7554 # same as `([^\n]|\\\n)!!! Don't swap it, it breaks.
7555 my $paragraph = $_;
7556 /^((?:\\\n|[^\n])*)(?:\n(\t.*))?$/som;
7557 my ($relationship, $actions) = ($1, $2 || '');
7559 # Separate targets from dependencies: the first colon.
7560 $relationship =~ /^([^:]+\S+) *: *(.*)$/som;
7561 my ($targets, $dependencies) = ($1, $2);
7562 # Remove the escaped new lines.
7563 # I don't know why, but I have to use a tmp $flat_deps.
7564 my $flat_deps = &flatten ($dependencies);
7565 my @deps = split (' ', $flat_deps);
7567 foreach (split (' ' , $targets))
7568 {
7569 # FIXME: We are not robust to people defining several targets
7570 # at once, only some of them being in %dependencies. The
7571 # actions from the targets in %dependencies are usually generated
7572 # from the content of %actions, but if some targets in $targets
7573 # are not in %dependencies the ELSE branch will output
7574 # a rule for all $targets (i.e. the targets which are both
7575 # in %dependencies and $targets will have two rules).
7577 # FIXME: The logic here is not able to output a
7578 # multi-paragraph rule several time (e.g. for each conditional
7579 # it is defined for) because it only knows the first paragraph.
7581 # Output only if not in FALSE.
7582 if (defined $dependencies{$_}
7583 && $cond ne 'FALSE')
7584 {
7585 &depend ($_, @deps);
7586 $actions{$_} .= $actions;
7587 }
7588 else
7589 {
7590 # Free-lance dependency. Output the rule for all the
7591 # targets instead of one by one.
7593 # Work out all the conditions for which the target hasn't
7594 # been defined
7595 my @undefined_conds;
7596 if (defined $target_conditional{$targets})
7597 {
7598 my @defined_conds = keys %{$target_conditional{$targets}};
7599 @undefined_conds = invert_conditions(@defined_conds);
7600 }
7601 else
7602 {
7603 if (defined $targets{$targets})
7604 {
7605 # No conditions for which target hasn't been defined
7606 @undefined_conds = ();
7607 }
7608 else
7609 {
7610 # Target hasn't been defined for any conditions
7611 @undefined_conds = ("");
7612 }
7613 }
7615 if ($cond ne 'FALSE')
7616 {
7617 for my $undefined_cond (@undefined_conds)
7618 {
7619 my $condparagraph = $paragraph;
7620 $condparagraph =~ s/^/make_condition (@cond_stack, $undefined_cond)/gme;
7621 if (rule_define ($targets, $is_am,
7622 "$cond $undefined_cond", $file))
7623 {
7624 $result_rules .=
7625 "$spacing$comment$condparagraph\n"
7626 }
7627 else
7628 {
7629 # Remember to discard next paragraphs
7630 # if they belong to this rule.
7631 $discard_rule = 1;
7632 }
7633 }
7634 if ($#undefined_conds == -1)
7635 {
7636 # This target has already been defined, the rule
7637 # has not been defined. Remember to discard next
7638 # paragraphs if they belong to this rule.
7639 $discard_rule = 1;
7640 }
7641 }
7642 $comment = $spacing = '';
7643 last;
7644 }
7645 }
7646 }
7648 elsif (/$ASSIGNMENT_PATTERN/mso)
7649 {
7650 my ($var, $type, $val) = ($1, $2, $3);
7651 file_error ($file, "macro `$var' with trailing backslash")
7652 if /\\$/;
7654 $is_rule = 0;
7656 # Accumulating variables must not be output.
7657 append_comments $var, $spacing, $comment;
7658 macro_define ($var, $is_am, $type, $cond, $val, $file)
7659 if $cond ne 'FALSE';
7660 push (@var_list, $var);
7662 # If the user has set some variables we were in charge
7663 # of (which is detected by the first reading of
7664 # `header-vars.am'), we must not output them.
7665 $result_vars .= "$spacing$comment$_\n"
7666 if $type ne '+' && $var_is_am{$var} && $cond ne 'FALSE';
7668 $comment = $spacing = '';
7669 }
7670 else
7671 {
7672 # This isn't an error; it is probably some tokens which
7673 # configure is supposed to replace, such as `@SET-MAKE@',
7674 # or some part of a rule cut by an if/endif.
7675 if ($cond ne 'FALSE' && ! ($is_rule && $discard_rule))
7676 {
7677 s/^/make_condition (@cond_stack)/gme;
7678 $result_rules .= "$spacing$comment$_\n";
7679 }
7680 $comment = $spacing = '';
7681 }
7682 }
7684 if ("@saved_cond_stack" ne "@cond_stack")
7685 {
7686 if (@cond_stack)
7687 {
7688 &am_error ("unterminated conditionals: @cond_stack");
7689 }
7690 else
7691 {
7692 # FIXME: better error message here.
7693 &am_error ("conditionals not nested in include file");
7694 }
7695 }
7697 return ($comment, $result_vars, $result_rules);
7698 }
7701 # $CONTENTS
7702 # &file_contents ($BASENAME, [%TRANSFORM])
7703 # ----------------------------------------
7704 # Return contents of a file from $libdir/am, automatically skipping
7705 # macros or rules which are already known.
7706 sub file_contents ($%)
7707 {
7708 my ($basename, %transform) = @_;
7709 my ($comments, $variables, $rules) =
7710 file_contents_internal (1, "$libdir/am/$basename.am", %transform);
7711 return "$comments$variables$rules";
7712 }
7715 # $REGEXP
7716 # &transform (%PAIRS)
7717 # -------------------
7718 # Foreach ($TOKEN, $VAL) in %PAIRS produce a replacement expression suitable
7719 # for file_contents which:
7720 # - replaces %$TOKEN% with $VAL,
7721 # - enables/disables ?$TOKEN? and ?!$TOKEN?,
7722 # - replaces %?$TOKEN% with TRUE or FALSE.
7723 sub transform (%)
7724 {
7725 my (%pairs) = @_;
7726 my $result = '';
7728 while (my ($token, $val) = each %pairs)
7729 {
7730 $result .= "s/\Q%$token%\E/\Q$val\E/gm;";
7731 if ($val)
7732 {
7733 $result .= "s/\Q?$token?\E//gm;s/^.*\Q?!$token?\E.*\\n//gm;";
7734 $result .= "s/\Q%?$token%\E/TRUE/gm;";
7735 }
7736 else
7737 {
7738 $result .= "s/\Q?!$token?\E//gm;s/^.*\Q?$token?\E.*\\n//gm;";
7739 $result .= "s/\Q%?$token%\E/FALSE/gm;";
7740 }
7741 }
7743 return $result;
7744 }
7747 # &append_exeext ($MACRO)
7748 # -----------------------
7749 # Macro is an Automake magic macro which primary is PROGRAMS, e.g.
7750 # bin_PROGRAMS. Make sure these programs have $(EXEEXT) appended.
7751 sub append_exeext ($)
7752 {
7753 my ($macro) = @_;
7755 prog_error "append_exeext ($macro)"
7756 unless $macro =~ /_PROGRAMS$/;
7758 my @conds = variable_conditions_recursive ($macro);
7760 my @condvals;
7761 foreach my $cond (@conds)
7762 {
7763 my @one_binlist = ();
7764 my @condval = variable_value_as_list_recursive ($macro, $cond);
7765 foreach my $rcurs (@condval)
7766 {
7767 # Skip autoconf substs. Also skip if the user
7768 # already applied $(EXEEXT).
7769 if ($rcurs =~ /^\@.*\@$/ || $rcurs =~ /\$\(EXEEXT\)$/)
7770 {
7771 push (@one_binlist, $rcurs);
7772 }
7773 else
7774 {
7775 push (@one_binlist, $rcurs . '$(EXEEXT)');
7776 }
7777 }
7779 push (@condvals, $cond);
7780 push (@condvals, "@one_binlist");
7781 }
7783 macro_delete ($macro);
7784 while (@condvals)
7785 {
7786 my $cond = shift (@condvals);
7787 my @val = split (' ', shift (@condvals));
7788 define_pretty_variable ($macro, $cond, @val);
7789 }
7790 }
7793 # @PREFIX
7794 # &am_primary_prefixes ($PRIMARY, $CAN_DIST, @PREFIXES)
7795 # -----------------------------------------------------
7796 # Find all variable prefixes that are used for install directories. A
7797 # prefix `zar' qualifies iff:
7798 #
7799 # * `zardir' is a variable.
7800 # * `zar_PRIMARY' is a variable.
7801 #
7802 # As a side effect, it looks for misspellings. It is an error to have
7803 # a variable ending in a "reserved" suffix whose prefix is unknown, eg
7804 # "bni_PROGRAMS". However, unusual prefixes are allowed if a variable
7805 # of the same name (with "dir" appended) exists. For instance, if the
7806 # variable "zardir" is defined, then "zar_PROGRAMS" becomes valid.
7807 # This is to provide a little extra flexibility in those cases which
7808 # need it.
7809 sub am_primary_prefixes ($$@)
7810 {
7811 my ($primary, $can_dist, @prefixes) = @_;
7813 local $_;
7814 my %valid = map { $_ => 0 } @prefixes;
7815 $valid{'EXTRA'} = 0;
7816 foreach my $varname (keys %var_value)
7817 {
7818 # Automake is allowed to define variables that look like they
7819 # are magic variables, such as INSTALL_DATA.
7820 next
7821 if $var_is_am{$varname};
7823 if ($varname =~ /^(nobase_)?(dist_|nodist_)?(.*)_$primary$/)
7824 {
7825 my ($base, $dist, $X) = ($1 || '', $2 || '', $3 || '');
7826 if ($dist ne '' && ! $can_dist)
7827 {
7828 # Note that a configure variable is always legitimate.
7829 # It is natural to name such variables after the
7830 # primary, so we explicitly allow it.
7831 macro_error ($varname,
7832 "invalid variable `$varname': `dist' is forbidden")
7833 if ! exists $configure_vars{$varname};
7834 }
7835 # A not-explicitely-allowed prefix X is allowed if Xdir
7836 # has been defined and X is not a standard prefix.
7837 elsif (! defined $valid{$X} && (! variable_defined ("${X}dir")
7838 || exists $standard_prefix{$X}))
7839 {
7840 # Note that a configure variable is always legitimate.
7841 # It is natural to name such variables after the
7842 # primary, so we explicitly allow it.
7843 macro_error ($varname, "invalid variable `$varname'")
7844 if ! exists $configure_vars{$varname};
7845 }
7846 else
7847 {
7848 # Ensure all extended prefixes are actually used.
7849 $valid{"$base$dist$X"} = 1;
7850 }
7851 }
7852 }
7854 # Return only those which are actually defined.
7855 return sort grep { variable_defined ($_ . '_' . $primary) } keys %valid;
7856 }
7859 # Handle `where_HOW' variable magic. Does all lookups, generates
7860 # install code, and possibly generates code to define the primary
7861 # variable. The first argument is the name of the .am file to munge,
7862 # the second argument is the primary variable (eg HEADERS), and all
7863 # subsequent arguments are possible installation locations. Returns
7864 # list of all values of all _HOW targets.
7865 #
7866 # FIXME: this should be rewritten to be cleaner. It should be broken
7867 # up into multiple functions.
7868 #
7869 # Usage is: am_install_var (OPTION..., file, HOW, where...)
7870 sub am_install_var
7871 {
7872 my (@args) = @_;
7874 my $do_require = 1;
7875 my $can_dist = 0;
7876 my $default_dist = 0;
7877 while (@args)
7878 {
7879 if ($args[0] eq '-noextra')
7880 {
7881 $do_require = 0;
7882 }
7883 elsif ($args[0] eq '-candist')
7884 {
7885 $can_dist = 1;
7886 }
7887 elsif ($args[0] eq '-defaultdist')
7888 {
7889 $default_dist = 1;
7890 $can_dist = 1;
7891 }
7892 elsif ($args[0] !~ /^-/)
7893 {
7894 last;
7895 }
7896 shift (@args);
7897 }
7899 my ($file, $primary, @prefix) = @args;
7901 # Now that configure substitutions are allowed in where_HOW
7902 # variables, it is an error to actually define the primary. We
7903 # allow `JAVA', as it is customarily used to mean the Java
7904 # interpreter. This is but one of several Java hacks. Similarly,
7905 # `PYTHON' is customarily used to mean the Python interpreter.
7906 macro_error ($primary, "`$primary' is an anachronism")
7907 if variable_defined ($primary)
7908 && ($primary ne 'JAVA' && $primary ne 'PYTHON');
7911 # Get the prefixes which are valid and actually used.
7912 @prefix = am_primary_prefixes ($primary, $can_dist, @prefix);
7914 # If a primary includes a configure substitution, then the EXTRA_
7915 # form is required. Otherwise we can't properly do our job.
7916 my $require_extra;
7917 my $warned_about_extra = 0;
7919 my @used = ();
7920 my @result = ();
7922 # True if the iteration is the first one. Used for instance to
7923 # output parts of the associated file only once.
7924 my $first = 1;
7925 foreach my $X (@prefix)
7926 {
7927 my $nodir_name = $X;
7928 my $one_name = $X . '_' . $primary;
7930 my $strip_subdir = 1;
7931 # If subdir prefix should be preserved, do so.
7932 if ($nodir_name =~ /^nobase_/)
7933 {
7934 $strip_subdir = 0;
7935 $nodir_name =~ s/^nobase_//;
7936 }
7938 # If files should be distributed, do so.
7939 my $dist_p = 0;
7940 if ($can_dist)
7941 {
7942 $dist_p = (($default_dist && $nodir_name !~ /^nodist_/)
7943 || (! $default_dist && $nodir_name =~ /^dist_/));
7944 $nodir_name =~ s/^(dist|nodist)_//;
7945 }
7947 # Append actual contents of where_PRIMARY variable to
7948 # result.
7949 foreach my $rcurs (&variable_value_as_list_recursive ($one_name, 'all'))
7950 {
7951 # Skip configure substitutions. Possibly bogus.
7952 if ($rcurs =~ /^\@.*\@$/)
7953 {
7954 if ($nodir_name eq 'EXTRA')
7955 {
7956 if (! $warned_about_extra)
7957 {
7958 $warned_about_extra = 1;
7959 macro_error ($one_name,
7960 "`$one_name' contains configure substitution, but shouldn't");
7961 }
7962 }
7963 # Check here to make sure variables defined in
7964 # configure.ac do not imply that EXTRA_PRIMARY
7965 # must be defined.
7966 elsif (! defined $configure_vars{$one_name})
7967 {
7968 $require_extra = $one_name
7969 if $do_require;
7970 }
7972 next;
7973 }
7975 push (@result, $rcurs);
7976 }
7978 # A blatant hack: we rewrite each _PROGRAMS primary to include
7979 # EXEEXT.
7980 append_exeext ($one_name)
7981 if $primary eq 'PROGRAMS';
7983 # "EXTRA" shouldn't be used when generating clean targets,
7984 # all, or install targets. We used to warn if EXTRA_FOO was
7985 # defined uselessly, but this was annoying.
7986 next
7987 if $nodir_name eq 'EXTRA';
7989 if ($nodir_name eq 'check')
7990 {
7991 push (@check, '$(' . $one_name . ')');
7992 }
7993 else
7994 {
7995 push (@used, '$(' . $one_name . ')');
7996 }
7998 # Is this to be installed?
7999 my $install_p = $nodir_name ne 'noinst' && $nodir_name ne 'check';
8001 # If so, with install-exec? (or install-data?).
8002 my $exec_p = ($nodir_name =~ /$EXEC_DIR_PATTERN/o);
8004 # Singular form of $PRIMARY.
8005 (my $one_primary = $primary) =~ s/S$//;
8006 $output_rules .= &file_contents ($file,
8007 ('FIRST' => $first,
8009 'PRIMARY' => $primary,
8010 'ONE_PRIMARY' => $one_primary,
8011 'DIR' => $X,
8012 'NDIR' => $nodir_name,
8013 'BASE' => $strip_subdir,
8015 'EXEC' => $exec_p,
8016 'INSTALL' => $install_p,
8017 'DIST' => $dist_p));
8019 $first = 0;
8020 }
8022 # The JAVA variable is used as the name of the Java interpreter.
8023 # The PYTHON variable is used as the name of the Python interpreter.
8024 if (@used && $primary ne 'JAVA' && $primary ne 'PYTHON')
8025 {
8026 # Define it.
8027 define_pretty_variable ($primary, '', @used);
8028 $output_vars .= "\n";
8029 }
8031 if ($require_extra && ! variable_defined ('EXTRA_' . $primary))
8032 {
8033 macro_error ($require_extra,
8034 "`$require_extra' contains configure substitution, but `EXTRA_$primary' not defined");
8035 }
8037 # Push here because PRIMARY might be configure time determined.
8038 push (@all, '$(' . $primary . ')')
8039 if @used && $primary ne 'JAVA' && $primary ne 'PYTHON';
8041 # Make the result unique. This lets the user use conditionals in
8042 # a natural way, but still lets us program lazily -- we don't have
8043 # to worry about handling a particular object more than once.
8044 return uniq (sort @result);
8045 }
8048 ################################################################
8050 # Each key in this hash is the name of a directory holding a
8051 # Makefile.in. These variables are local to `is_make_dir'.
8052 my %make_dirs = ();
8053 my $make_dirs_set = 0;
8055 sub is_make_dir
8056 {
8057 my ($dir) = @_;
8058 if (! $make_dirs_set)
8059 {
8060 foreach my $iter (@configure_input_files)
8061 {
8062 $make_dirs{dirname ($iter)} = 1;
8063 }
8064 # We also want to notice Makefile.in's.
8065 foreach my $iter (@other_input_files)
8066 {
8067 if ($iter =~ /Makefile\.in$/)
8068 {
8069 $make_dirs{dirname ($iter)} = 1;
8070 }
8071 }
8072 $make_dirs_set = 1;
8073 }
8074 return defined $make_dirs{$dir};
8075 }
8077 ################################################################
8079 # This variable is local to the "require file" set of functions.
8080 my @require_file_paths = ();
8083 # &maybe_push_required_file ($DIR, $FILE, $FULLFILE)
8084 # --------------------------------------------------
8085 # See if we want to push this file onto dist_common. This function
8086 # encodes the rules for deciding when to do so.
8087 sub maybe_push_required_file
8088 {
8089 my ($dir, $file, $fullfile) = @_;
8091 if ($dir eq $relative_dir)
8092 {
8093 push_dist_common ($file);
8094 return 1;
8095 }
8096 elsif ($relative_dir eq '.' && ! &is_make_dir ($dir))
8097 {
8098 # If we are doing the topmost directory, and the file is in a
8099 # subdir which does not have a Makefile, then we distribute it
8100 # here.
8101 push_dist_common ($fullfile);
8102 return 1;
8103 }
8104 return 0;
8105 }
8108 # &require_file_internal ($WHERE, $MYSTRICT, @FILES)
8109 # --------------------------------------------------
8110 # Verify that the file must exist in the current directory.
8111 # $MYSTRICT is the strictness level at which this file becomes required.
8112 #
8113 # Must set require_file_paths before calling this function.
8114 # require_file_paths is set to hold a single directory (the one in
8115 # which the first file was found) before return.
8116 sub require_file_internal ($$@)
8117 {
8118 my ($where, $mystrict, @files) = @_;
8120 foreach my $file (@files)
8121 {
8122 my $fullfile;
8123 my $errdir;
8124 my $errfile;
8125 my $save_dir;
8127 my $found_it = 0;
8128 my $dangling_sym = 0;
8129 foreach my $dir (@require_file_paths)
8130 {
8131 $fullfile = $dir . "/" . $file;
8132 $errdir = $dir unless $errdir;
8134 # Use different name for "error filename". Otherwise on
8135 # an error the bad file will be reported as eg
8136 # `../../install-sh' when using the default
8137 # config_aux_path.
8138 $errfile = $errdir . '/' . $file;
8140 if (-l $fullfile && ! -f $fullfile)
8141 {
8142 $dangling_sym = 1;
8143 last;
8144 }
8145 elsif (-f $fullfile)
8146 {
8147 $found_it = 1;
8148 maybe_push_required_file ($dir, $file, $fullfile);
8149 $save_dir = $dir;
8150 last;
8151 }
8152 }
8154 # `--force-missing' only has an effect if `--add-missing' is
8155 # specified.
8156 if ($found_it && (! $add_missing || ! $force_missing))
8157 {
8158 # Prune the path list.
8159 @require_file_paths = $save_dir;
8160 }
8161 else
8162 {
8163 # If we've already looked for it, we're done. You might
8164 # wonder why we don't do this before searching for the
8165 # file. If we do that, then something like
8166 # AC_OUTPUT(subdir/foo foo) will fail to put foo.in into
8167 # DIST_COMMON.
8168 if (! $found_it)
8169 {
8170 next if defined $require_file_found{$fullfile};
8171 $require_file_found{$fullfile} = 1;
8172 }
8174 if ($strictness >= $mystrict)
8175 {
8176 if ($dangling_sym && $add_missing)
8177 {
8178 unlink ($fullfile);
8179 }
8181 my $trailer = '';
8182 my $suppress = 0;
8184 # Only install missing files according to our desired
8185 # strictness level.
8186 my $message = "required file `$errfile' not found";
8187 if ($add_missing)
8188 {
8189 $suppress = 1;
8191 if (-f ("$libdir/$file"))
8192 {
8193 # Install the missing file. Symlink if we
8194 # can, copy if we must. Note: delete the file
8195 # first, in case it is a dangling symlink.
8196 $message = "installing `$errfile'";
8197 # Windows Perl will hang if we try to delete a
8198 # file that doesn't exist.
8199 unlink ($errfile) if -f $errfile;
8200 if ($symlink_exists && ! $copy_missing)
8201 {
8202 if (! symlink ("$libdir/$file", $errfile))
8203 {
8204 $suppress = 0;
8205 $trailer = "; error while making link: $!";
8206 }
8207 }
8208 elsif (system ('cp', "$libdir/$file", $errfile))
8209 {
8210 $suppress = 0;
8211 $trailer = "\n error while copying";
8212 }
8213 }
8215 if (! maybe_push_required_file (dirname ($errfile),
8216 $file, $errfile))
8217 {
8218 if (! $found_it)
8219 {
8220 # We have added the file but could not push it
8221 # into DIST_COMMON (probably because this is
8222 # an auxiliary file and we are not processing
8223 # the top level Makefile). This is unfortunate,
8224 # since it means we are using a file which is not
8225 # distributed!
8227 # Get Automake to be run again: on the second
8228 # run the file will be found, and pushed into
8229 # the toplevel DIST_COMMON automatically.
8230 $automake_needs_to_reprocess_all_files = 1;
8231 }
8232 }
8234 # Prune the path list.
8235 @require_file_paths = &dirname ($errfile);
8236 }
8238 # If --force-missing was specified, and we have
8239 # actually found the file, then do nothing.
8240 next
8241 if $found_it && $force_missing;
8243 if ($suppress)
8244 {
8245 file_warning ($where, "$message$trailer");
8246 }
8247 else
8248 {
8249 file_error ($where, "$message$trailer");
8250 }
8251 }
8252 }
8253 }
8254 }
8256 # &require_file ($WHERE, $MYSTRICT, @FILES)
8257 # -----------------------------------------
8258 sub require_file ($$@)
8259 {
8260 my ($where, $mystrict, @files) = @_;
8261 @require_file_paths = $relative_dir;
8262 require_file_internal ($where, $mystrict, @files);
8263 }
8265 # &require_file_with_macro ($MACRO, $MYSTRICT, @FILES)
8266 # ----------------------------------------------------
8267 sub require_file_with_macro ($$@)
8268 {
8269 my ($macro, $mystrict, @files) = @_;
8270 require_file ($var_location{$macro}, $mystrict, @files);
8271 }
8274 # &require_conf_file ($WHERE, $MYSTRICT, @FILES)
8275 # ----------------------------------------------
8276 # Looks in configuration path, as specified by AC_CONFIG_AUX_DIR.
8277 sub require_conf_file ($$@)
8278 {
8279 my ($where, $mystrict, @files) = @_;
8280 @require_file_paths = @config_aux_path;
8281 require_file_internal ($where, $mystrict, @files);
8282 my $dir = $require_file_paths[0];
8283 @config_aux_path = @require_file_paths;
8284 # Avoid unsightly '/.'s.
8285 $config_aux_dir = '$(top_srcdir)' . ($dir eq '.' ? "" : "/$dir");
8286 }
8289 # &require_conf_file_with_macro ($MACRO, $MYSTRICT, @FILES)
8290 # ---------------------------------------------------------
8291 sub require_conf_file_with_macro ($$@)
8292 {
8293 my ($macro, $mystrict, @files) = @_;
8294 require_conf_file ($var_location{$macro}, $mystrict, @files);
8295 }
8297 ################################################################
8299 # &require_build_directory ($DIRECTORY)
8300 # ------------------------------------
8301 # Emit rules to create $DIRECTORY if needed, and return
8302 # the file that any target requiring this directory should be made
8303 # dependent upon.
8304 sub require_build_directory ($)
8305 {
8306 my $directory = shift;
8307 my $dirstamp = "$directory/.dirstamp";
8309 # Don't emit the rule twice.
8310 if (! defined $directory_map{$directory})
8311 {
8312 $directory_map{$directory} = 1;
8314 # Directory must be removed by `make distclean'.
8315 $compile_clean_files{$dirstamp} = DIST_CLEAN;
8317 $output_rules .= ("$dirstamp:\n"
8318 . "\t\@\$(mkinstalldirs) $directory\n"
8319 . "\t\@: > $dirstamp\n");
8320 }
8322 return $dirstamp;
8323 }
8325 # &require_build_directory_maybe ($FILE)
8326 # --------------------------------------
8327 # If $FILE lies in a subdirectory, emit a rule to create this
8328 # directory and return the file that $FILE should be made
8329 # dependent upon. Otherwise, just return the empty string.
8330 sub require_build_directory_maybe ($)
8331 {
8332 my $file = shift;
8333 my $directory = dirname ($file);
8335 if ($directory ne '.')
8336 {
8337 return require_build_directory ($directory);
8338 }
8339 else
8340 {
8341 return '';
8342 }
8343 }
8345 ################################################################
8347 # Push a list of files onto dist_common.
8348 sub push_dist_common
8349 {
8350 prog_error ("push_dist_common run after handle_dist")
8351 if $handle_dist_run;
8352 macro_define ('DIST_COMMON', 1, '+', '', "@_", '');
8353 }
8356 # Set strictness.
8357 sub set_strictness
8358 {
8359 $strictness_name = $_[0];
8360 if ($strictness_name eq 'gnu')
8361 {
8362 $strictness = GNU;
8363 }
8364 elsif ($strictness_name eq 'gnits')
8365 {
8366 $strictness = GNITS;
8367 }
8368 elsif ($strictness_name eq 'foreign')
8369 {
8370 $strictness = FOREIGN;
8371 }
8372 else
8373 {
8374 die "$me: level `$strictness_name' not recognized\n";
8375 }
8376 }
8379 ################################################################
8381 # Glob something. Do this to avoid indentation screwups everywhere we
8382 # want to glob. Gross!
8383 sub my_glob
8384 {
8385 my ($pat) = @_;
8386 return <${pat}>;
8387 }
8389 # Remove one level of brackets and strip leading spaces,
8390 # as does m4 to function arguments.
8391 sub unquote_m4_arg
8392 {
8393 $_ = shift;
8394 s/^\s*//;
8396 my @letters = split //;
8397 my @result = ();
8398 my $depth = 0;
8400 foreach (@letters)
8401 {
8402 if ($_ eq '[')
8403 {
8404 ++$depth;
8405 next if $depth == 1;
8406 }
8407 elsif ($_ eq ']')
8408 {
8409 --$depth;
8410 next if $depth == 0;
8411 # don't count orphan right brackets
8412 $depth = 0 if $depth < 0;
8413 }
8414 push @result, $_;
8415 }
8416 return join '', @result;
8417 }
8419 ################################################################
8421 # print_error ($LEADER, @ARGS)
8422 # ----------------------------
8423 # Do the work of printing the error message. Join @ARGS with spaces,
8424 # then split at newlines and add $LEADER to each line. Uses `warn' to
8425 # print message. Set exit status.
8426 sub print_error
8427 {
8428 my ($leader, @args) = @_;
8429 my $text = "@args";
8430 @args = split ("\n", $text);
8431 $text = $leader . join ("\n" . $leader, @args) . "\n";
8432 warn $text;
8433 $exit_status = 1;
8434 }
8437 # Print an error message and set exit status.
8438 sub am_error (@)
8439 {
8440 print_error ("$me: ${am_file}.am: ", @_);
8441 }
8444 # &file_error ($FILE, @ARGS)
8445 # --------------------------
8446 sub file_error ($@)
8447 {
8448 my ($file, @args) = @_;
8449 print_error ("$file: ", @args);
8450 }
8453 # ¯o_error ($MACRO, @ARGS)
8454 # ----------------------------
8455 # Report an error, @ARGS, about $MACRO.
8456 sub macro_error ($@)
8457 {
8458 my ($macro, @args) = @_;
8459 file_error ($var_location{$macro}, @args);
8460 }
8463 # &target_error ($TARGET, @ARGS)
8464 # ------------------------------
8465 # Report an error, @ARGS, about the rule $TARGET.
8466 sub target_error ($@)
8467 {
8468 my ($target, @args) = @_;
8469 file_error ($targets{$target}, @args);
8470 }
8473 # Like am_error, but while scanning configure.ac.
8474 sub conf_error
8475 {
8476 # FIXME: can run in subdirs.
8477 print_error ("$me: $configure_ac: ", @_);
8478 }
8480 # &file_warning ($FILE, @ARGS)
8481 # ----------------------------
8482 # Warning message with line number referring to configure.ac.
8483 # Does not affect exit_status
8484 sub file_warning ($@)
8485 {
8486 my ($file, @args) = @_;
8488 my $saved_exit_status = $exit_status;
8489 my $sig = $SIG{'__WARN__'};
8490 $SIG{'__WARN__'} = 'DEFAULT';
8491 file_error ($file, @args);
8492 $exit_status = $saved_exit_status;
8493 $SIG{'__WARN__'} = $sig;
8494 }
8496 # Tell user where our aclocal.m4 is, but only once.
8497 sub keyed_aclocal_warning ($)
8498 {
8499 my ($key) = @_;
8500 warn "$me: macro `$key' can be generated by `aclocal'\n";
8501 }
8503 # Print usage information.
8504 sub usage ()
8505 {
8506 print <<EOF;
8507 Usage: $0 [OPTION] ... [Makefile]...
8509 Generate Makefile.in for configure from Makefile.am.
8511 Operation modes:
8512 --help print this help, then exit
8513 --version print version number, then exit
8514 -v, --verbose verbosely list files processed
8515 --no-force only update Makefile.in's that are out of date
8517 Dependency tracking:
8518 -i, --ignore-deps disable dependency tracking code
8519 --include-deps enable dependency tracking code
8521 Flavors:
8522 --cygnus assume program is part of Cygnus-style tree
8523 --foreign set strictness to foreign
8524 --gnits set strictness to gnits
8525 --gnu set strictness to gnu
8527 Library files:
8528 -a, --add-missing add missing standard files to package
8529 --libdir=DIR directory storing library files
8530 -c, --copy with -a, copy missing files (default is symlink)
8531 -f, --force-missing force update of standard files
8532 EOF
8534 my ($last, @lcomm);
8535 $last = '';
8536 foreach my $iter (sort ((@common_files, @common_sometimes)))
8537 {
8538 push (@lcomm, $iter) unless $iter eq $last;
8539 $last = $iter;
8540 }
8542 my @four;
8543 print "\nFiles which are automatically distributed, if found:\n";
8544 format USAGE_FORMAT =
8545 @<<<<<<<<<<<<<<<< @<<<<<<<<<<<<<<<< @<<<<<<<<<<<<<<<< @<<<<<<<<<<<<<<<<
8546 $four[0], $four[1], $four[2], $four[3]
8547 .
8548 $~ = "USAGE_FORMAT";
8550 my $cols = 4;
8551 my $rows = int(@lcomm / $cols);
8552 my $rest = @lcomm % $cols;
8554 if ($rest)
8555 {
8556 $rows++;
8557 }
8558 else
8559 {
8560 $rest = $cols;
8561 }
8563 for (my $y = 0; $y < $rows; $y++)
8564 {
8565 @four = ("", "", "", "");
8566 for (my $x = 0; $x < $cols; $x++)
8567 {
8568 last if $y + 1 == $rows && $x == $rest;
8570 my $idx = (($x > $rest)
8571 ? ($rows * $rest + ($rows - 1) * ($x - $rest))
8572 : ($rows * $x));
8574 $idx += $y;
8575 $four[$x] = $lcomm[$idx];
8576 }
8577 write;
8578 }
8580 print "\nReport bugs to <bug-automake\@gnu.org>.\n";
8582 exit 0;
8583 }
8586 # &version ()
8587 # -----------
8588 # Print version information
8589 sub version ()
8590 {
8591 print <<EOF;
8592 automake (GNU $PACKAGE) $VERSION
8593 Written by Tom Tromey <tromey\@redhat.com>.
8595 Copyright 2002 Free Software Foundation, Inc.
8596 This is free software; see the source for copying conditions. There is NO
8597 warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
8598 EOF
8599 exit 0;
8600 }