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Disable option checking in the toplevel, avoid 2.64 fopen glitch.

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/:
	* configure.ac: Call AC_DISABLE_OPTION_CHECKING.
	(baseargs): Add --disable-option-checking.
	* configure: Regenerate.

config/:
	* override.m4 (AC_DISABLE_OPTION_CHECKING): Define to be
	empty if not defined, to avoid error with 2.59.
	(_AC_LANG_IO_PROGRAM): When the Autoconf version is exactly
	2.64, avoid per-language instances to drop fopen from test
	program.
This commit is contained in:
Ralf Wildenhues
2009-08-19 22:21:10 +00:00
parent b46f14f711
commit 5546e07b4f
5 changed files with 29 additions and 0 deletions
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13
config/override.m4
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@@ -58,6 +58,19 @@ m4_define([AC_INIT], m4_defn([AC_INIT])[
_GCC_AUTOCONF_VERSION_CHECK
])
dnl Turn AC_DISABLE_OPTION_CHECKING into a no-op if not defined.
m4_ifndef([AC_DISABLE_OPTION_CHECKING],
[m4_define([AC_DISABLE_OPTION_CHECKING])])
dnl Fix 2.64 cross compile detection for AVR and RTEMS
dnl by not trying to compile fopen.
m4_if(m4_defn([m4_PACKAGE_VERSION]), [2.64],
[m4_foreach([_GCC_LANG], [C, C++, Fortran, Fortran 77],
[m4_define([_AC_LANG_IO_PROGRAM(]_GCC_LANG[)], m4_defn([AC_LANG_PROGRAM(]_GCC_LANG[)]))])])
m4_version_prereq([2.60],, [
dnl We use $ac_pwd in some of the overrides below; ensure its definition
m4_divert_push([PARSE_ARGS])dnl