Eric Blake [Fri, 14 Nov 2008 04:20:18 +0000 (21:20 -0700)]
Reduce forks in AC_DEFINE.
* lib/autoconf/general.m4 (_AC_DEFINE_Q_PRINT): New macro.
(_AC_DEFINE_Q): Use it to avoid forks for all AC_DEFINE and most
AC_DEFINE_UNQUOTED.
* lib/autoconf/fortran.m4 (_AC_FC_WRAPPERS): Properly quote #.
* tests/torture.at (Substitute and define special characters):
(Define to a 2000-byte string): Enhance tests to cover
AC_DEFINE_UNQUOTED.
(@%:@define header templates): Enhance test to cover #.
Eric Blake [Thu, 13 Nov 2008 04:10:35 +0000 (21:10 -0700)]
Remove _m4_index.
* lib/m4sugar/m4sugar.m4 (_m4_index): Delete; it is more efficient
to make callers guarantee a match.
(m4_init): Adjust caller.
* lib/autoconf/status.m4 (_AC_CONFIG_COMPUTE_DEST): Likewise.
* lib/autoconf/general.m4 (_AC_DEFINE_Q): Likewise.
For consistency, make temporary variable match language name.
* lib/autoconf/fortran.m4 (_AC_PROG_FC_G, _AC_PROG_FC_V_OUTPUT):
Match the save/test variables' names to the FFLAGS/FCFLAGS being
saved.
* THANKS: Update.
Eric Blake [Wed, 19 Nov 2008 03:58:19 +0000 (20:58 -0700)]
Alter default value of AS_EXIT.
* lib/m4sugar/m4sh.m4 (_AS_EXIT_PREPARE): Let as_func_exit
parameter be optional.
(AS_EXIT): Use it to make better default.
(_AS_DETECT_BETTER_SHELL): Use new default.
* bin/autoconf.as (exit_missing_arg, getopt): Likewise.
* lib/autoconf/status.m4 (AC_OUTPUT): Likewise.
* tests/m4sh.at (AS@&t@_EXIT): Update test.
* doc/autoconf.texi (Common Shell Constructs) <AS_EXIT>: Mention
new default behavior.
(Limitations of Builtins) <trap>: Adjust to use new default.
* NEWS: Mention the semantic change.
Suggested by Ralf Wildenhues.
Ralf Wildenhues [Sun, 16 Nov 2008 22:03:29 +0000 (23:03 +0100)]
Use a different workaround for an automake quirk.
* tests/Makefile.am (AUTOMAKE_OPTIONS): Remove.
(distclean_generic): New helper variable, to fool automake.
($(distclean_generic)): Depend on clean-local, to prevent
the race in the two rules with accessing and removing
$(TESTSUITE).
Report by Eric Blake.
Ralf Wildenhues [Sun, 16 Nov 2008 22:00:22 +0000 (23:00 +0100)]
Simplify, avoid unbalanced parentheses from last change.
* lib/m4sugar/m4sh.m4 (_AS_VAR_ARITH_PREPARE): Simplify, avoid
unbalanced parentheses from last change.
Spotted by Eric Blake, fix suggested by Paolo Bonzini.
Ralf Wildenhues [Sun, 16 Nov 2008 21:18:07 +0000 (22:18 +0100)]
Fix exit status of expr version of as_func_arith.
* lib/m4sugar/m4sh.m4 (_AS_VAR_ARITH_PREPARE): Count an exit
status of 1 of expr also as success, to avoid failure if the
computation result is zero. Fixes test failures with IRIX sh,
where the expr variant of as_func_arith is used.
Eric Blake [Tue, 11 Nov 2008 17:34:08 +0000 (10:34 -0700)]
Whitespace reduction in configure.
* lib/autoconf/autoheader.m4 (AH_VERBATIM): Avoid empty lines.
* lib/autoconf/general.m4 (_AC_INIT_PREPARE, AC_CHECK_FILES):
Likewise.
(_AC_DEFINE_Q): Restore empty line, since some clients in the wild
depend on it.
Ralf Wildenhues [Wed, 12 Nov 2008 22:54:01 +0000 (23:54 +0100)]
Wrap keywords in `testsuite --list' output.
* lib/autotest/general.m4 (AT_INIT): Rewrite --list awk script,
avoid lint warnings from gawk, wrap keyword lists to stay below
80 characters per line if possible.
* tests/autotest.at (Keyword wrapping): New test.
Eric Blake [Tue, 11 Nov 2008 04:00:44 +0000 (21:00 -0700)]
Work around <=m4-1.4.9 bug in m4_format.
* lib/m4sugar/m4sugar.m4 (_m4_index): New internal macro.
(m4_init): Only use it in older m4.
* lib/autoconf/general.m4 (_AC_DEFINE_Q): Use it to avoid
m4_format bug in older m4.
* lib/autoconf/status.m4 (_AC_CONFIG_COMPUTE_DEST): Likewise.
Reported by Bob Proulx.
Eric Blake [Fri, 7 Nov 2008 14:11:01 +0000 (07:11 -0700)]
Avoid some regex uses.
* lib/autoconf/general.m4 (_AC_DEFINE_Q): Use m4_format rather
than m4_bpatsubst to grab string prefix.
* lib/autoconf/status.m4 (_AC_CONFIG_REGISTER)
(_AC_CONFIG_REGISTER_DEST, AC_CONFIG_SUBDIRS): Likewise.
(_AC_FILE_DEPENDENCY_TRACE_COLON): Use m4_translit instead of
m4_bpatsubst to change bytes.
(_AC_CONFIG_DEPENDENCY_DEFAULT): Use m4_index rather than
m4_bmatch to find byte.
(_AC_CONFIG_COMPUTE_DEST): New helper macro.
Eric Blake [Fri, 7 Nov 2008 13:20:12 +0000 (06:20 -0700)]
Use more efficient macros in AC_CONFIG_SUBDIRS.
* lib/autoconf/status.m4 (_AC_CONFIG_FOOS, AC_CONFIG_SUBDIRS): Use
m4_map_args_w.
(_AC_OUTPUT_FILE): Use m4_map_args_sep and m4_map_args.
(_AC_OUTPUT_FILE_ADJUST_DIR): New helper macro.
Eric Blake [Fri, 7 Nov 2008 04:40:18 +0000 (21:40 -0700)]
Use more efficient macros in AC_CHECK_FILES and AC_CHECK_DECLS.
* lib/autoconf/general.m4 (AC_CHECK_FILES): Use m4_map_args_w,
and avoid typo.
(AC_CHECK_DECLS, AC_CHECK_DECLS_ONCE): Use m4_map_args_sep.
(_AC_CHECK_FILES, _AC_CHECK_DECLS, _AC_CHECK_DECL_ONCE): New
helper macros.
(AC_LIBSOURCES): Use m4_map_args.
Eric Blake [Thu, 6 Nov 2008 21:04:55 +0000 (14:04 -0700)]
Use more efficient macros in AC_CHECK_HEADERS.
* lib/autoconf/headers.m4 (AH_CHECK_HEADERS)
(AH_CHECK_HEADERS_DIRENT): Rename...
(_AH_CHECK_HEADER, _AH_CHECK_HEADER_DIRENT): ...and take only one
argument, rather than a list.
(AC_CHECK_HEADERS, AC_CHECK_HEADERS_ONCE):
Adjust callers to use m4_map_args_w.
(AC_HEADER_DIRENT): Adjust caller to use m4_map_args.
(_AC_CHECK_HEADER_ONCE): New helper macro.
Eric Blake [Thu, 6 Nov 2008 18:33:04 +0000 (11:33 -0700)]
Use more efficient macros in AC_CHECK_FUNCS.
* lib/autoconf/functions.m4 (_AH_CHECK_FUNCS): Rename...
(_AH_CHECK_FUNC): ...and take only one argument, rather than a
list.
(AC_CHECK_FUNCS, AC_CHECK_FUNCS_ONCE): Adjust callers to use
m4_map_args_w.
(_AC_CHECK_FUNC_ONCE): New helper macro.
(AC_REPLACE_FUNCS): Use m4_map_args_w.
Eric Blake [Mon, 10 Nov 2008 15:28:48 +0000 (08:28 -0700)]
Try 'print -r --' as a non-forking variant of 'printf %s\\n'.
* lib/m4sugar/m4sh.m4 (_AS_ECHO_PREPARE): Cater to Solaris ksh.
* doc/autoconf.texi (Limitations of Builtins) <printf>: Document
the print workaround.
Idea by Paolo Bonzini.
Paolo Bonzini [Thu, 6 Nov 2008 10:42:39 +0000 (11:42 +0100)]
Remove three forks per _AC_RUN_LOG_STDERR in the common case.
* lib/autoconf/general.m4 (_AC_RUN_LOG_STDERR): Avoid grep/rm/cat
sequence when the program's stderr was empty, while providing a
conftest.err file even in that case.
(_AC_CACHE_DUMP): Fix mismatched parenthesis.
Paolo Bonzini [Thu, 6 Nov 2008 09:54:51 +0000 (10:54 +0100)]
Change `present but cannot be compiled' behavior to use compiler result.
* NEWS: Document it.
* doc/autoconf.texi (Present But Cannot Be Compiled): Document it.
* lib/autoconf/headers.m4 (_AC_CHECK_HEADER_MONGREL): Implement it
and adjust warning.
* tests/semantics.at (AC_CHECK_HEADERS): Test new semantics.
Eric Blake [Thu, 6 Nov 2008 00:11:15 +0000 (17:11 -0700)]
Add m4_map_args_w.
* lib/m4sugar/m4sugar.m4 (m4_map_args_w): New macro, undocumented
for now.
(_m4_split): Allow user control over separator.
(m4_split): Adjust caller.
(m4_foreach_w, m4_append_uniq_w, _m4_text_wrap): Rewrite to use
m4_map_args_w.
* tests/m4sugar.at (m4@&t@_append): Augment test keywords.
(M4 loops): Test new interface.
Eric Blake [Wed, 5 Nov 2008 18:12:42 +0000 (11:12 -0700)]
Use _m4_foreach in more places.
* lib/m4sugar/foreach.m4 (m4_dquote_elt, m4_join, m4_joinall)
(_m4_minmax, m4_set_add_all): Use _m4_foreach instead of
m4_foreach.
* lib/m4sugar/m4sugar.m4 (_m4_joinall): Use m4_map_args_sep
instead of m4_foreach or m4_map_args.
Eric Blake [Tue, 4 Nov 2008 00:17:38 +0000 (17:17 -0700)]
Add m4_map_args_sep, undocumented for now.
* lib/m4sugar/m4sugar.m4 (m4_map_args_sep): New macro.
(_m4_map): Change API to cover more of m4_map*.
* lib/m4sugar/foreach.m4 (_m4_map): Adjust to new API.
(m4_map_args): Delete.
* tests/m4sugar.at (m4@&t@_map_args and m4@&t@_curry): Enhance
test.
Eric Blake [Tue, 4 Nov 2008 19:35:09 +0000 (12:35 -0700)]
Improve m4_for performance.
* lib/m4sugar/m4sugar.m4 (_m4_for): Alter API to make it easier to
avoid m4_define by some clients.
(m4_for): Adjust caller.
* lib/m4sugar/foreach.m4 (_m4_foreach, m4_case, m4_bmatch)
(_m4_cond, _m4_bpatsubsts, _m4_shiftn, m4_do, m4_reverse)
(_m4_map, m4_map_args, m4_map_args_pair, _m4_list_pad)
(_m4_list_cmp): Likewise.
Eric Blake [Tue, 4 Nov 2008 15:20:00 +0000 (08:20 -0700)]
Reject arguments with leading =.
* lib/autoconf/general.m4 (_AC_INIT_PARSE_ARGS): Detect case of
missing variable name, with fewer forks. Quote invalid arguments
in message, in case they include spaces.
* lib/autoconf/status.m4 (_AC_OUTPUT_CONFIG_STATUS)
(_AC_OUTPUT_MAIN_LOOP): Quote invalid arguments.
* lib/autotest/general.m4 (AT_INIT): Likewise.
Reported by Jeff Squyres.
Paolo Bonzini [Mon, 3 Nov 2008 09:25:23 +0000 (10:25 +0100)]
Dispatch on AC_LANG_CONFTEST
* lib/autoconf/c.m4 (AC_LANG_CONFTEST(C)): Define instead of
AC_LANG_SOURCE(C).
* lib/autoconf/general.m4 (_AC_INIT_PREPARE): Add a comment at the
top of confdefs.h, which also works around cpp deficiencies.
* lib/autoconf/lang.m4 (AC_LANG_DEFINE): Define AC_LANG_CONFTEST(xyz)
(AC_LANG_CONFTEST): Dispatch based on _AC_LANG.
(AC_LANG_CONFTEST()): New.
Paolo Bonzini [Fri, 31 Oct 2008 15:53:17 +0000 (16:53 +0100)]
Rename _AC_CHECK_HEADER_OLD and _AC_CHECK_HEADER_NEW.
* lib/autoconf/headers.m4 (AC_CHECK_HEADER): Adjust naming.
(_AC_CHECK_HEADER_PREPROC_BODY): New name of _AC_CHECK_HEADER_OLD_BODY.
(_AC_CHECK_HEADER_COMPILE_BODY): New name of _AC_CHECK_HEADER_NEW_BODY.
(_AC_CHECK_HEADER_PREPROC): New name of _AC_CHECK_HEADER_OLD.
(_AC_CHECK_HEADER_COMPILE): New name of _AC_CHECK_HEADER_NEW.
* tests/semantics.at (AC_CHECK_HEADERS_OLD, AC_CHECK_HEADER_NEW):
Give better name.
Eric Blake [Thu, 30 Oct 2008 21:32:56 +0000 (15:32 -0600)]
Simplify diversion stack handling.
* lib/m4sugar/m4sugar.m4 (m4_divert_stack): Use fewer macros, and
avoid extra newlines.
(m4_divert_stack_push): Compute location here, rather than caller.
(m4_divert_push): Update caller.
(m4_divert): Likewise, and also adjust current diversion name.
(m4_divert_pop): Simplify rule that diversion stack must never go
empty.
(_m4_require_call): Bypass diversion stack when collecting
required macro text.
(m4_init): Set current diversion without requiring m4_init.
* lib/m4sugar/m4sh.m4 (AS_INIT): Avoid too many pops.
* lib/autotest/general.m4 (AT_INIT): Likewise.
* lib/autoconf/general.m4 (_AC_INIT_DEFAULTS): Schedule wrapped
text to run prior to m4sugar cleanup.
* doc/autoconf.texi (Text processing Macros) <m4_newline>: Mention
optional argument.
(Conditional constructs) <m4_ifvaln, m4_n>: Mention use of dnl.
* NEWS: Undo blurb about m4_divert.
* tests/m4sugar.at (m4@&t@_divert_stack): New test.
Eric Blake [Thu, 30 Oct 2008 18:16:15 +0000 (12:16 -0600)]
Simplify expansion stack handling.
* lib/m4sugar/m4sugar.m4 (m4_expansion_stack): Use fewer macros;
always output 'top level'.
(_m4_expansion_stack_entry): New macro, to format the string only
when needed.
(m4_expansion_stack_push): Only push a macro name.
(m4_warn, _m4_defun_pro): Update callers.
(m4_expansion_stack_pop, m4_expansion_stack_dump): Delete.
(_m4_defun_epi, m4_fatal): Inline the calls.
* tests/m4sugar.at (m4@&t@_expansion_stack): New test.
Eric Blake [Thu, 30 Oct 2008 16:56:11 +0000 (10:56 -0600)]
Update LINENO documentation.
* doc/autoconf.texi (Initialization Macros) <AS_INIT_GENERATED>:
(Special Shell Variables) <LINENO>: Mention that LINENO support in
child scripts may be broken. Modernize example.
Eric Blake [Thu, 30 Oct 2008 15:39:57 +0000 (09:39 -0600)]
Don't check for non-POSIX extensions in suggested tests.
* lib/m4sugar/m4sh.m4 (_AS_VAR_APPEND_WORKS): Remove suggestion;
we still use += if available, but should not reject shells (like
dash) that don't provide it.
(_AS_DETECT_SUGGESTED): Document a policy for m4sh.
Reported by Paolo Bonzini.
Eric Blake [Thu, 30 Oct 2008 12:56:44 +0000 (06:56 -0600)]
Work around Solaris /bin/sh case bug.
* lib/m4sugar/m4sh.m4 (_AS_CASE, _AS_CASE_DEFAULT): Always provide
a non-empty command list.
(AS_CASE): Always guarantee that a case will match.
* doc/autoconf.texi (Limitations of Builtins) <case>: Document the
Solaris bug, and mention AS_CASE.
Eric Blake [Wed, 29 Oct 2008 16:39:53 +0000 (10:39 -0600)]
Fix LINENO detection to work around bash and pdksh limitations.
* lib/m4sugar/m4sh.m4 (_AS_LINENO_WORKS): Enhance the test, so
that we can choose which of two tests to trust.
(_AS_RUN): Set flag when alternate shell is running.
(_AS_DETECT_EXPAND): New macro.
(_AS_DETECT_BETTER_SHELL): Use it to massage LINENO tests.
Eric Blake [Wed, 29 Oct 2008 15:27:11 +0000 (09:27 -0600)]
Document current beta-quality status.
* configure.ac: Reflect fact that change to git-version-gen
produces -, but not always a letter, on non-release builds.
* BUGS: Mention known issues.
* lib/m4sugar/m4sh.m4 (_AS_DETECT_BETTER_SHELL): Ask for help in
debugging platforms with deficient shells.
Eric Blake [Tue, 28 Oct 2008 22:37:54 +0000 (16:37 -0600)]
Alter signature of AS_INIT_GENERATED.
* lib/m4sugar/m4sh.m4 (AS_INIT_GENERATED): Add parameters, and
manage here-doc and chmod in place. This also allows future
changes for optimizing the child via diversion/m4_wrap magic.
* lib/autoconf/status.m4 (_AC_OUTPUT_CONFIG_STATUS): Update
caller.
* doc/autoconf.texi (Initialization Macros) <AS_INIT_GENERATED>:
Update the documentation.
Eric Blake [Tue, 28 Oct 2008 21:11:16 +0000 (15:11 -0600)]
Add m4_stack_foreach_sep.
* lib/m4sugar/m4sugar.m4 (m4_stack_foreach_sep)
(m4_stack_foreach_sep_lifo): New macros.
(_m4_stack_reverse): Adjust prototype, to support it.
(m4_copy): Use fewer macros.
* tests/m4sugar.at (m4@&t@_stack_foreach): Rename...
(m4@&t@_stack): ...and add m4_stack_foreach_sep tests.
Paolo Bonzini [Tue, 28 Oct 2008 11:18:55 +0000 (12:18 +0100)]
Rewrite handling of diversion and expansion stack.
* NEWS: Document stricter requirement on m4_init.
* lib/m4sugar/m4sugar.m4 (m4_divert_stack): New, replacing
_m4_divert_n_stack.
(_m4_divert_stack_push): New.
(m4_divert): Use _m4_divert_stack_push and replace m4_define with
m4_popdef.
(m4_divert_push): Use _m4_divert_stack_push.
(m4_divert_pop): Use m4_divert_stack instead of _m4_divert_n_stack,
pop _m4_divert_stack instead of m4_divert_stack.
(m4_expansion_stack): New. Update comment above it.
(m4_expansion_stack_push, m4_expansion_stack_pop): Work on
_m4_expansion_stack instead of m4_expansion_stack.
(m4_expansion_stack_dump): Check presence of _m4_expansion_stack
instead of m4_expansion_stack. Use m4_expansion_stack's expansion
instead of the definition, and compensate for the trailing newline
in the expansion.
(m4_warn, _m4_defun_pro, _m4_defun_epi): Check presence of
_m4_expansion_stack instead of m4_expansion_stack.
(m4_newline): Expand first argument after the newline.
(m4_init): Use m4_divert_stack instead of _m4_divert_n_stack,
* tests/m4sugar.at (m4_append, m4_text_wrap): Invoke m4_init.
* tests/tools.at (whitespace in file names, the empty token): Likewise.
Eric Blake [Wed, 29 Oct 2008 03:31:12 +0000 (21:31 -0600)]
Reduce forks while searching for better shell.
* lib/m4sugar/m4sh.m4 (_AS_DETECT_REQUIRED)
(_AS_DETECT_SUGGESTED): No need to provide extra subshell; _AS_RUN
already does the job.
(_AS_DETECT_BETTER_SHELL): Simplify AS_EXIT when not run in a trap
0 context.
Ralf Wildenhues [Tue, 28 Oct 2008 21:04:36 +0000 (22:04 +0100)]
Fix parallel test execution output lossage.
* lib/autotest/general.m4 (_AT_CHECK): Truncate files to hold
standard output and standard error before the test, use append
mode for writing.
* THANKS: Update.
Caught by Bob Proulx' build daemons, analysis and suggested fix
by Stéphane Chazelas.
Paolo Bonzini [Tue, 28 Oct 2008 10:27:31 +0000 (11:27 +0100)]
add m4_stack_foreach and m4_stack_foreach_lifo
* lib/m4sugar/m4sugar.m4 (_m4_stack_reverse): New from _m4_copy.
(m4_stack_foreach, m4_stack_foreach_lifo): New.
(m4_copy): Use m4_stack_foreach and m4_curry.
(_m4_dumpdefs_down, _m4_dumpdefs_up): Remove.
(m4_dumpdefs): Rewrite using m4_stack_foreach_lifo.
* tests/m4sugar.at (m4_stack_foreach): New test.
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