changelog

autoconf是一个产生可以自动配置源代码包

	Revert the patch from 2006-04-01 and only improve
	_AS_DETECT_BETTER_SHELL:

	* lib/m4sugar/m4sh.m4 (_AS_PATH_WALK): Do not optimize; do not
	skip nonexistent directories.
	(_AS_DETECT_BETTER_SHELL): The optimization is moved here--try
	only shell candidates which exist.
	(AS_UNAME): No need to give three parameters to _AS_PATH_WALK.
	* lib/autotest/general.m4 (AT_INIT): No need to give three
	parameters to _AS_PATH_WALK.

2006-04-07  Stepan Kasal  <[e-mail]>,
	    Ralf Wildenhues <[e-mail]>

	* bin/autoupdate.in (handle_autoconf_patches): Change the way we
	distinguish m4sugar macros.
	* tests/tools.at (autoupdating with aclocal and m4_include):
	New test.  Bug reported by Gary V. Vaughan <[e-mail]>,
	test case by Noah Misch <[e-mail]>.

2006-04-07  Stepan Kasal  <[e-mail]>

	Revert my change from 2006-03-17, in other words:
	* lib/m4sugar/m4sh.m4 (AS_BOURNE_COMPATIBLE): Insert BIN_SH=xpg4
	  and DUALCASE=1.
	(AS_SHELL_SANITIZE): Remove DUALCASE=1.
	* doc/autoconf.texi (Special Shell Variables) <BIN_SH>: Say that
	  it is set.

2006-04-07  Eric Blake  <[e-mail]>

	* doc/autoconf.texi (Programming in M4sh): Document that
	AS_MKDIR_P exits the script on failure.
	* lib/autotest/general.m4: Remove redundant AS_ERROR.

2006-04-07  Ralf Wildenhues  <[e-mail]>

	* config/elisp-comp, config/install-sh, config/mdate-sh,
	config/missing, config/mkinstalldirs: Sync from Automake.

	* lib/Autom4te/FileUtils.pm, lib/Autom4te/Struct.pm: Sync
	from Automake.

	* doc/make-stds.texi: Sync from gnulib.

2006-04-06  Eric Blake  <[e-mail]>

	* lib/autoconf/lang.m4 (_AC_COMPILER_EXEEXT_O): Inside cache
	check, s/ac_exeext/ac_cv_exeext/.  Fixes regression introduced
	2006-04-01.

2006-04-06  Stepan Kasal  <[e-mail]>,
	    Eric Blake  <[e-mail]>,
	    Paul Eggert  <[e-mail]>,
	    Ralf Wildenhues <[e-mail]>

	* lib/autoconf/general.m4 (_AC_CACHE_DUMP): Fix the detection of
	whether `set' quotes correctly: redirect stderr of the tested
	`set', and use a subshell, for Ultrix; use `sed' instead of
	`grep' for zsh `set' which may write binary output; match only
	at the beginning of a line, to avoid false positives.
	In order to avoid false positives by unrelated variables with
	multiline content, put the dump algorithm in a subshell and
	unset all variables containing newlines (except some which are
	special to the shell).  Warn about cache variables that are
	unset.

2006-04-06  Ralf Wildenhues  <[e-mail]>

	* config/config.guess, config/config.sub, config/texinfo.tex:
	Sync from upstream.

	* tests/mktests.sh: Reword comments.

	* tests/mktests.sh: Only skip internal macros starting with
	`_AC_' or `__AC_'.  Noted by Stepan Kasal.
	Update exclusion lists for the test suite to this end:
	(AC_ARG_VAR): Do test this now.
	(AC_SEARCH_LIBS, AC_REPLACE_FUNCS): Need an argument.
	(AC_LINKER_OPTION): Remove (renamed to _AC_LINKER_OPTION).
	(AC_LIST_MEMBER_OF): Likewise (renamed to _AC_LIST_MEMBER_IF).
	(AC_LINK_FILES): Obsoleted since (and thus AU_DEFUN'ed).

	* doc/autoconf.texi (Shell Substitutions): Mention the MSYS
	shell issue with double-quoted command substitutions of native
	commands.
	Reported to MSYS by Mark Cave-Ayland, to Autoconf by Keith
	Marshall.

	* Makefile.maint (sc_cast_of_argument_to_free): Do not fail when
	no file matches the glob, discard the warning, set `nullglob'.
	(syntax-check): Likewise.
	(sc_cast_of_x_alloc_return_value): Likewise.
	(sc_cast_of_alloca_return_value, sc_error_exit_success)
	(sc_prohibit_jm_in_m4, .re-list, sc_unmarked_diagnostics)
	(m4-check): Likewise.
	(sc_system_h_headers): Do not print rule on execution.
	(sc_tight_scope): Do not fail for non-existing `src' directory.
	(sc_changelog): Skip the Copyright footer.
	* lib/autoconf/lang.m4: Remove trailing space.

	* lib/autoconf/status.m4: More replacements to
	<tab><space> where this makes sense.

2006-04-06  Stepan Kasal  <[e-mail]>

	* tests/Makefile.am (maintainer-check-posix):
	  s/POSIXLY_CORRECTLY/POSIXLY_CORRECT/

	* lib/autoconf/status.m4 (_AC_CONFIG_FOOS): Append TAGS to
	  ac_config_<foo>s again, sometimes normalized, sometimes not.
	(AC_CONFIG_FILES, AC_CONFIG_HEADERS, AC_CONFIG_LINKS):
	(AC_CONFIG_COMMANDS): Do not do so here.
	(_AC_CONFIG_REGISTER_DEST): Double quote the tags in macros _AC_LIST_TAGS
	  and_AC_LIST_TAG_COMMANDS; fixes another regression introduced by the
	  2005-07-25 rewrite.  Noticed by Noah Misch.

	* lib/autoconf/general.m4 (AC_PRESERVE_HELP_ORDER): Do not define
	  _AC_PRESERVE_HELP_ORDER, ...
	(AC_ARG_ENABLE, AC_ARG_WITH): ... use AC_PROVIDE_IFELSE insetad.

	* lib/autoconf/general.m4 (AC_ARG_VAR): Do not use m4_divert_once
	  inside m4_expand_once; it is redundant.

	* lib/autoconf/general.m4 (_AC_INIT_HELP): Remove the broken support
	  for --help from Cygnus `configure.'

2006-04-06  Paul Eggert  <[e-mail]>

	* doc/autoconf.texi (C Compiler): Warn about #error.  Follows up
	on a patch proposed by Ralf Wildenhues.

2006-04-05  Paul Eggert  <[e-mail]>

	* lib/autoconf/status.m4: Replace <space>''<tab> with
	<tab><space> where this makes sense.

2006-04-05  Howard Chu  <[e-mail]>  (trivial change)
	    Noah Misch  <[e-mail]>

	* lib/autoconf/general.m4 (AC_PRESERVE_HELP_ORDER): New macro.
	(AC_ARG_ENABLE, AC_ARG_WITH): Adjust.
	* doc/autoconf.texi (Help Formatting): New node.
	* NEWS: Announce AC_PRESERVE_HELP_ORDER.

2006-04-05  Ralf Wildenhues  <[e-mail]>

	* TODO, config/Makefile.am, lib/freeze.mk, lib/autoconf/c.m4,
	lib/autoconf/specific.m4, lib/autoconf/status.m4,
	lib/autoconf/types.m4, lib/autotest/general.m4,
	tests/mktests.sh, tests/torture.at: White space cleanup:
	remove some SPACE before TAB, or add quoting ('' or @&t@).

	* NEWS, TODO, bin/autoreconf.in: `filesystem' -> `file system'.

	* doc/autoconf.texi (Shell Substitutions): Document `^' vs. `|'.

2006-04-05  Eric Blake  <[e-mail]>

	* lib/autotest/general.m4 (AT_INIT): Prep AT_*_all, so that an
	empty test suite works.
	* tests/autotest.at (Empty test suite): Remove xfail.

2006-04-05  Noah Misch  <[e-mail]>

	* lib/autoconf/status.m4 (_AC_CONFIG_FOOS): Do not append normalized
	TAGS to ac_config_<foo>s.
	(AC_CONFIG_FILES, AC_CONFIG_HEADERS, AC_CONFIG_LINKS): Do so here.
	(AC_CONFIG_COMMANDS): Append NAME to ac_config_commands without
	normalizing it, consistent it with previous releases.
	* tests/torture.at (Macro calls in AC_CONFIG_COMMANDS tags): New test.

2006-04-05  Paul Eggert  <[e-mail]>

	* lib/m4sugar/m4sh.m4 (AS_BASENAME_EXPR, AS_DIRNAME_EXPR):
	Use simplified args that Eric Blake originally suggested.

2006-04-04  Paul Eggert  <[e-mail]>

	* tests/mktests.sh: Don't use 'cat'; just read the files directly.
	Prefer 'sort -u' to 'sort | uniq'.  Filter data before sorting it.
	Use 'comm' rather than N instances of grep; this also fixes a bug
	whereby substrings were incorrectly matched, causing us to not
	generate tests for AC_F77_NAME_MANGLING and AC_FUNC_LSTAT.
	(exclude_list): Exclude empty macros.
	(ac_exclude_list): Exclude AC_INCLUDES_DEFAULT.

	Use awk rather than grep -E or egrep, to avoid
	portability problems with regular expressions containing newlines.
	(exclude_list, ac_exclude_list, au_exclude_list, ac_exclude_script):
	Switch from grep to awk syntax.
	(ac_exclude_script): Renamed from ac_exclude_egrep.
	(au_exclude_script): Renamed from au_exclude_egrep.

2006-04-04  Noah Misch  <[e-mail]>

	* lib/autoconf/general.m4 (_AC_INIT_HELP): Only `configure.in' evidences
	a subdirectory subject to Cygnus `configure'.
	* lib/autoconf/status.m4 (_AC_OUTPUT_SUBDIRS): Likewise.

	* lib/autoconf/headers.m4 (_AC_CHECK_HEADER_MONGREL): Omit the bug
	report request when we have no AC_PACKAGE_BUGREPORT.

2006-04-03  Ralf Wildenhues  <[e-mail]>

	* THANKS: Update.

	* tests/mktests.sh: Update copyright year in the header of the
	generated files.

	* lib/autoconf/c.m4 (AC_C_INLINE): Do not skip cleanup code.
	(AC_C_RESTRICT): Likewise.  Furthermore, add a function with a
	typedef'ed restricted pointer, to catch a compiler bug on
	HP-UX 11.x, and fix warnings so it passes with -Werror.
	(_AC_PROG_CC_C99): Likewise.
	Reported by Albert Chin <[e-mail]>.
	* tests/mktests.sh: Do not skip AC_C_INLINE, AC_C_RESTRICT.

2006-04-03  Noah Misch  <[e-mail]>

	* bin/autoscan.in (subdirs): New global.
	(scan_file): Prune directories with configure{,.{ac,in,gnu}}.
	(output): Emit AC_CONFIG_SUBDIRS as needed.
	* tests/autoscan.at (autoscan): Remove XFAIL.

2006-04-03  Noah Misch  <[e-mail]>

	* lib/autoconf/general.m4 (AC_CACHE_SAVE): Use AC_MSG_NOTICE.

2006-04-03  Eric Blake  <[e-mail]>

	* THANKS: Add myself.

2006-04-03  Ralf Wildenhues  <[e-mail]>

	* lib/autotest/general.m4 (AT_INIT): Add `at_testdir' to pointer
	to log, point to testsuite output tree.

2006-04-02  Paul Eggert  <[e-mail]>

	* NEWS: AC_PROG_CC and AC_PROG_CXX no longer declare 'exit'.
	* doc/autoconf.texi (Function Portability): Mention that C++
	has trouble with 'exit'.
	(Guidelines): Test programs shouldn't use 'exit'.
	* lib/autoconf/c.m4 (_AC_PROG_CXX_EXIT_DECLARATION):
	Remove; all uses removed.
	(AC_LANG_INT_SAVE(C), AC_C_BIGENDIAN):
	Return from 'main' instead of calling 'exit'.
	* lib/autoconf/functions.m4 (_AC_LIBOBJ_ALLOCA, AC_FUNC_CLOSEDIR_VOID):
	(_AC_FUNC_FNMATCH_IF, AC_FUNC_GETGROUPS):
	(AC_FUNC_LSTAT_FOLLOWS_SLASHED_SYMLINK, _AC_FUNC_MALLOC_IF):
	(AC_FUNC_MEMCMP, AC_FUNC_MKTIME, AC_FUNC_MMAP, _AC_FUNC_REALLOC_IF):
	(AC_FUNC_SETPGRP, _AC_FUNC_STAT, AC_FUNC_STRTOD, AC_FUNC_STRERROR_R):
	(AC_FUNC_STRNLEN, AC_FUNC_SETVBUF_REVERSED, AC_FUNC_UTIME_NULL):
	(_AC_FUNC_FORK, _AC_FUNC_VFORK, AC_FUNC_WAIT3): Likewise.
	* lib/autoconf/headers.m4 (AC_HEADER_STDC): Likewise.
	* lib/autoconf/specific.m4 (AC_SYS_RESTARTABLE_SYSCALLS): Likewise.
	* lib/autoconf/types.m4 (AC_TYPE_GETGROUPS): Likewise.
	* tests/compile.at: Likewise.

2006-04-02  Pavel Roskin  <[e-mail]>

	* doc/autoconf.texi (AC_PATH_X): Update per 2005-08-26 change.

2006-04-01  Stepan Kasal  <[e-mail]>

	Clean up _AC_COMPILER_EXEEXT* macros.

	* lib/autoconf/lang.m4 (_AC_COMPILER_EXEEXT_DEFAULT): Don't try to
	  detect exeext, it will be done by _AC_COMPILER_EXEEXT_O; just set
	  ac_file to the name of the default output file and call
	  _AC_COMPILER_EXEEXT_WORKS.  Move the definition of ac_files and the
	  initial `rm' of the candidate files...
	(_AC_COMPILER_EXEEXT): ... here and simplify them.  Moreover, use
	  the same list in subsequent `rm' calls, and for the temporary
	  redefinition of ac_clean_files; call _AC_COMPILER_OBJEXT at the end,
	  and don't call the other _AC_COMPILER_EXEEXT_* macros directly, use...
	(_AC_COMPILER_EXEEXT_TESTS): ... this new macro.
	(_AC_COMPILER_EXEEXT_O): Don't export ac_cv_exeext, it's not needed (or
	  no longer needed) by libtool.  Make it a cache check.
	(_AC_COMPILER_EXEEXT_CROSS): Remove the comment, it was obviously
	  copied here by mistake.
	(AC_NO_EXECUTABLES): Redefine _AC_COMPILER_EXEEXT_TESTS, not
	  _AC_COMPILER_EXEEXT.
	* lib/autoconf/c.m4 (AC_PROG_CC, AC_PROG_CXX, AC_PROG_OBJC): Do not call
	  _AC_COMPILER_OBJEXT directly.
	* lib/autoconf/fortran.m4 (_AC_PROG_FC): Likewise.

2006-04-01  Stepan Kasal  <[e-mail]>

	* lib/m4sugar/m4sh.m4 (_AS_DIRNAME_PREPARE): New macro.
	(AS_DIRNAME): Use it.
	(_AS_PREPARE): Add _AS_DIRNAME_PREPARE.

	* tests/*.at: Remove the generated ones.

2006-04-01  Stepan Kasal  <[e-mail]>

	* lib/autotest/general.m4 (AT_INIT): Don't optimize the first PATH walk.

2006-04-01  Eric Blake  <[e-mail]>

	* lib/m4sugar/m4sh.m4 (_AS_PATH_WALK): Optimize nonexistent
	directories, unless optional third argument supplied.
	(AS_UNAME): Don't optimize PATH walk.

	* lib/Autom4te/Struct.pm, lib/autoconf/c.m4: s/non-existent/nonexistent/

2006-04-01  Eric Blake  <[e-mail]>
	and Stepan Kasal  <[e-mail]>

	* lib/m4sugar/m4sh.m4: Sort sections as implied by the comments,
	and fix some typos.

2006-04-01  Noah Misch  <[e-mail]>

	* lib/autoconf/general.m4 (_AC_INIT_VERSION): Emit script name and
	Autoconf version number despite a zero- or one-argument AC_INIT.

	* bin/autoreconf.in (parse_args): Multiple -v send --verbose to
	subordinate tools.
	* lib/Autom4te/General.pm (getopt): Make -v and -d incremental.
	* doc/autoconf.texi (autoreconf Invocation): Document it.

	* doc/autoconf.texi: Use `Cygwin', `MinGW', and `license' consistently.
	Append LocalWords so ispell-buff