(_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.
(AC_FUNC_GETPGRP, AC_FUNC_LSTAT_FOLLOWS_SLASHED_SYMLINK)
(AC_FUNC_MMAP, AC_FUNC_SELECT_ARGTYPES, _AC_FUNC_STAT)
(AC_FUNC_UTIME_NULL): Use AC_INCLUDES_DEFAULT.
Don't use AC_TRY_RUN, which double quotes, prefer AC_RUN_IFELSE,
and either AC_LANG_SOURCE or AC_LANG_PROGRAM.
(AC_FUNC_CLOSEDIR_VOID): Protect C++ from `int closedir ();' (or
the converse).
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.
Reported by Derek R. Price.
* tests/semantics.at (AC_REPLACE_FUNCS): New test.
* acfunctions.m4 (AC_REPLACE_FUNCS, _AC_LIBOBJ_ALLOCA): Use
AC_LIBSOURCES.
* 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.
* acgeneral.m4 (AC_RUN_IFELSE): Accept IF-CROSS-COMPILING.
(AC_TRY_RUN): Use it.
* acfunctions.m4: Start ousting AC_TRY_RUN and AC_TRY_COMPILE.
* acspecific.m4 (AC_AIX, AC_MINIX, AC_ISC_POSIX): AC_BEFORE on
AC_COMPILE_IFELSE and AC_RUN_IFELSE.
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.
(_AC_SYS_LARGEFILE_TEST_INCLUDES): this.
(AC_SYS_LARGEFILE_MACRO_VALUE): Use AC_LANG_PROGRAM instead of
_AC_SYS_LARGEFILE_SOURCE, i.e., don't pass
_AC_SYS_LARGEFILE_TEST_INCLUDES by default: this isn't desirable
when checking for fseeko.
(AC_SYS_LARGEFILE): Pass AC_SYS_LARGEFILE_TEST_INCLUDES to
_AC_SYS_LARGEFILE_MACRO_VALUE, since it no longer does this for us.
whether fseeko and ftello are properly declared.
* acfunctions.m4 (AC_FUNC_FSEEKO): New macro, which worries about
fseeko (and presumably ftello). Do not set _XOPEN_SOURCE; that
causes too many problems in practice.
* acfunctions (fteelo, fseeko): Trigger AC_FUNC_FSEEKO.
* doc/autoconf.texi: Adjust.
`shell.m4' and the name space `AS_*'.
* acgeneral.m4 (AC_SHELL_IFELSE, _AC_SHELL_TMPDIR, AC_SHELL_UNSET)
(AC_SHELL_MKDIR_P, AC_SHELL_DIRNAME): Rename and move to...
* shell.m4 (AS_IFELSE, AS_TMPDIR, AS_UNSET, AS_MKDIR_P)
(AS_DIRNAME): here, a new file.
Adjust all dependencies.
* tests/base.m4 (m4_wrap): Eve out into...
* tests/shell.m4: here, new file.
* tests/base.m4 (AC_SHELL_MKDIR_P)
(AC_SHELL_DIRNAME & AC_SHELL_DIRNAME_SED): Eve out into...
* tests/m4sugar.m4 (AS_MKDIR_P, AS_DIRNAME & AS_DIRNAME_SED):
here, new file.
Adjust the test suite.
AM_FUNC_MKTIME, AM_FUNC_OBSTACK, AM_FUNC_STRTOD): Deactivate
their AU_ALIAS definition: Automake 1.4 does not quote the name of
these macros, hence when Autoconf reads Automake's definition the
name is expanded with unpredictable results.
