Adjust all the routines to use it.
($log): New file (autoscan.log).
(output): Dump detailed logs into $log, and a shortened version to
stderr.
(&scan_makefile): Refine the regexp catching tokens in the code.
* doc/autoconf.texi (autoscan Invocation): Document `autoscan.log'
and the `configure.ac' checking feature.
Reported by Michael Elizabeth Chastain.
* autoconf.in: Refuse such AWK.
* configure.in: Likewise.
* Makefile.am (acversion.m4): Do not use move-if-change this file
has dependencies.
* doc/autoconf.texi (Fortran 77 Compiler): Some typos.
up.
* acfunctions.m4 (AC_FUNC_WAIT3): Use `break' to silent some
warnings from compilers.
* aclang.m4 (_AC_LANG_COMPILER_GNU): Log the version information
for all the compilers, not only GNU. Hence move from here...
(AC_PROG_CC, AC_PROG_CXX, AC_PROG_F77): to here.
compiler, not the preprocessor.
* acgeneral.m4 (_AC_INCLUDES_DEFAULT_REQUIREMENTS): No longer use
dedicated code to check for inttypes.h, as AC_CHECK_HEADERS does
the right thing.
* Makefile.am (.m4.m4f): Emphasize M4 error messages and fail
earlier if there are.
but some sed choke on multiple `;', and other tools (e.g.,
Automake), include the separator themselves.
* acgeneral.m4 (AC_ARG_VAR): Be sure not to leave extra `;'.
(_AC_FUNC_VFORK): this.
Remove AC_DEFINEs and don't guess cross-compilation values.
(_AC_FUNC_FORK): New, check whether fork() isn't just a stub.
(AC_FUNC_FORK): New, use _AC_FUNC_VFORK and _AC_FUNC_FORK to
define HAVE_WORKING_FORK, HAVE_WORKING_VFORK; and vfork to fork if
vfork doesn't work.
Guess values if cross-compiling, but warn.
* acfunctions: Add AC_FUNC_FORK.
* doc/autoconf.texi: Document AC_FUNC_FORK. Give example to define
and vfork appropriately.
(Macro Index): Rename as...
(Autoconf Macro Index): this.
(M4 Macro Index): New appendix.
(Programming in M4): New chapter.
Define M4sugar, M4sh, m4_pattern_forbid, and m4_pattern_allow.
(Quoting): Rename as...
(M$ Quotation): this.
Be part of `Programming in M4).
current values of the precious variables, not the previously
cached values.
Pass precious variables which are set to config.status.
* doc/autoconf.texi (Setting Output Variables): Document AC_ARG_VAR.
* tests/torture.at (AC_ARG_VAR): New.
AC_SYS_RESTARTABLE_SYSCALLS to the obsolete section,
and explain why and how to replace them.
* acfunctions.m4 (AC_FUNC_WAIT3): Warn as obsolete.
* acspecific.m4 (AC_SYS_RESTARTABLE_SYSCALLS): Likewise.
recommend instead of --cache-file. Indent example AC_CACHE_VAL macros
for clarity. Add new "Cache Checkpointing" section for AC_CACHE_SAVE
(and AC_CACHE_LOAD), so that the "Cache Files" section focuses solely
on features visible to end-users (e.g. to better fit the cross
references). Various minor rewordings for clarity, felicity, and/or
grammar.
AC_OUTPUT_MAKE_DEFS to include junky -D switches.
Reported by Wolfgang Mueller.
* tests/torture.at (#define header templates): Include trash in
confdefs.h.
* tests/atgeneral.at (AT_INIT): Don't expect `find' to support
-maxdepth, hence don't use -follow either.
Reported by Nicolas Joly.
* acgeneral.m4 (AC_OUTPUT_MAKE_DEFS) <confdef2opt.sed>: In the
`quote' section, `p'rint the result.
If neither `#define' pattern match, just call `d' to start a new
cycle.
Call this sed program with -n.
* acfunctions.m4 (AC_FUNC_MMAP): Use conftest.mmap, not
conftestmmap.
(AC_FUNC_UTIME_NULL): Use conftest.data, not conftestdata.
* acspecific.m4 (AC_PROG_MAKE_SET): Use conftest.make, not
conftestmake.
(_AC_PATH_X_XMKMF): Use conftest.dir, not conftestdir.
* acgeneral.m4 (AC_ARG_PROGRAM): Use conftest.sed, not
conftestsed.
* m4/sanity.m4: Use conftest.file, not conftestfile.
* doc/autoconf.texi (Guidelines for Test Programs): Suggest
using conftest.data, not conftestdata.
-x' and `test -f' to avoid confusing users with error messages.
(AS_MKDIR_P): Invert order of separators in IFS to avoid problem
with some shells adding backslash between fields and parsing the
result for escapes.
* doc/autoconf.texi (Special Shell Variables): Document IFS.
* m4sugar.m4: Formatting changes.
* acgeneral.m4 (AC_DIVERT_PUSH, AC_DIVERT_POP, AC_REQUIRE)
(AC_DIAGNOSE, AC_FATAL, AC_MSG_WARN, AC_MSG_NOTICE, AC_MSG_ERROR):
Use m4_copy to define them, in order to keep a good $0.
(AC_INIT): AC_LANG_PUSH C, not AC_LANG, to initialize the stack.
* aclang.m4 (AC_LANG_PUSH): Dont't use m4_defn on undefined macros.
(AC_LANG_POP): Admit an argument specifying the language we quit
when popping.
Adjust Autoconf's AC_LANG_POPs.
* tests/tools.at (AWK portability): Don't depend on AC_INIT.
(autoconf --trace: user macros): Obviously I
meant TRACE1, not AC_TRACE1.
Suggested by Jim.
* acgeneral.m4 (_AC_INIT_DEFAULTS): Don't define
ac_includes_default, since...
(_AC_INCLUDES_DEFAULT_REQUIREMENTS): this new macro does.
(AC_INCLUDES_DEFAULT): Require the former when default includes
are used.
(AC_CHECK_MEMBERS, _AC_CHECK_TYPE_NEW): Don't require
AC_HEADERS_STDC, that's a job for stupendous AC_INCLUDES_DEFAULT.
* acfunctions.m4 (AC_FUNC_MALLOC): Check for stdlib.h.
`0'. Test and fix.
Reported by Assar Westerlund.
* Makefile.am (maintainer-check): New target.
* tests/Makefile.am (maintainer-check, maintainer-check-posix)
(maintainer-check-c++, expr): Likewise.
* configure.in (EXPR): Look for it.
* tests/atgeneral.m4 (AT_CHECK): Propagate $2's default value.
* tests/compile.at (Extensions): New test.
* aclang.m4 (_AC_COMPILER_EXEEXT_DEFAULT, _AC_COMPILER_EXEEXT_O):
Distinguish files with or without a dot.
* autoreconf.sh: Likewise.
* autoheader.sh: Ditto.
* autoupdate.sh: Similarly.
* doc/autoconf.texi: Adjust.
* tests/atspecific.m4: Be sure to remove configure.in.
Adjust the test suite to use `configure.ac'.
configure.in maintainer, but discourage its use.
* acspecific.m4 (_AC_CYGWIN, _AC_MINGW32, _AC_EMXOS2): Rename as...
(AC_CYGWIN, AC_MINGW32, AC_EMXOS2): these.
AU defined on top of AC_CANONICAL_HOST and $host_os.
* tests/mktests.sh (update_exclude_list): Add AC_CYGWIN,
AC_MINGW32, and AC_EMXOS2.
* acspecific.m4 (AC_EXEEXT, AC_OBJEXT, _AC_EXEEXT, _AC_OBJEXT):
Move as...
* aclang.m4 (AC_EXEEXT, AC_OBJEXT, _AC_COMPILER_EXEEXT)
(_AC_COMPILER_OBJEXT): these.
(_AC_COMPILER_EXEEXT): Use _AC_LINK_IFELSE.
Don't depend upon $CYGWIN and the like.
(_AC_COMPILER_OBJEXT): Model after _AC_COMPILER_EXEEXT.
Skip more extensions.
Use _AC_COMPILE_IFELSE.
