[SCM] GNU Autoconf source repository branch, master, updated. v2.69-73-g1c048e2

[Paul Eggert]

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- Log -----------------------------------------------------------------
commit 1c048e2f9f387f01e8f9254f800b909cabd28672
Author: Paul Eggert <***@cs.ucla.edu>
Date: Wed Feb 13 23:28:21 2013 -0800

AC_FUNC_SETPGRP: work even when cross-compiling

* lib/autoconf/functions.m4 (AC_FUNC_SETPGRP):
Use AC_COMPILE_IFELSE rather than AC_RUN_IFELSE.
Problem reported by Alvaro Soliverez in
<http://lists.gnu.org/archive/html/bug-autoconf/2013-02/msg00002.html>.

-----------------------------------------------------------------------

Summary of changes:
lib/autoconf/functions.m4 | 16 +++++++---------
1 files changed, 7 insertions(+), 9 deletions(-)

diff --git a/lib/autoconf/functions.m4 b/lib/autoconf/functions.m4
index 05f59bd..1b56641 100644
--- a/lib/autoconf/functions.m4
+++ b/lib/autoconf/functions.m4
@@ -1518,15 +1518,13 @@ rm -f conftest*
# ---------------
AC_DEFUN([AC_FUNC_SETPGRP],
[AC_CACHE_CHECK(whether setpgrp takes no argument, ac_cv_func_setpgrp_void,
-[AC_RUN_IFELSE(
-[AC_LANG_PROGRAM([AC_INCLUDES_DEFAULT],
-[/* If this system has a BSD-style setpgrp which takes arguments,
- setpgrp(1, 1) will fail with ESRCH and return -1, in that case
- exit successfully. */
- return setpgrp (1,1) != -1;])],
- [ac_cv_func_setpgrp_void=no],
- [ac_cv_func_setpgrp_void=yes],
- [AC_MSG_ERROR([cannot check setpgrp when cross compiling])])])
+ [AC_COMPILE_IFELSE(
+ [AC_LANG_PROGRAM(
+ [[#include <unistd.h>
+ static int (*p) (void) = setpgrp;]],
+ [[return setpgrp ();]])],
+ [ac_cv_func_setpgrp_void=yes],
+ [ac_cv_func_setpgrp_void=no])])
if test $ac_cv_func_setpgrp_void = yes; then
AC_DEFINE(SETPGRP_VOID, 1,
[Define to 1 if the `setpgrp' function takes no argument.])


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