[mpich-commits] [mpich] MPICH primary repository branch, master, updated. v3.1rc2-112-g3c37766

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http://git.mpich.org/mpich.git/commitdiff/3c37766610b0d89b69b4b21b7053696c4efbfa3f

commit 3c37766610b0d89b69b4b21b7053696c4efbfa3f
Author: Ken Raffenetti <raffenet at mcs.anl.gov>
Date:   Tue Nov 26 11:10:05 2013 -0600

    corrections to weak alias test
    
    Test all compilers, not just gcc. Use nesting safe push/pop flag
    macros.
    
    Signed-off-by: Pavan Balaji <balaji at mcs.anl.gov>

diff --git a/confdb/aclocal_cc.m4 b/confdb/aclocal_cc.m4
index f8146e1..f73aa4c 100644
--- a/confdb/aclocal_cc.m4
+++ b/confdb/aclocal_cc.m4
@@ -361,18 +361,13 @@ pac_cv_attr_weak_import=yes,pac_cv_attr_weak_import=no)])
 # Check if the alias option for weak attributes is allowed
 AC_CACHE_CHECK([whether __attribute__((weak,alias(...))) allowed],
 pac_cv_attr_weak_alias,[
-# We add -Werror if it's gcc to force an error exit if the weak attribute
-# isn't understood
-if test $GCC = yes ; then
-  save_CFLAGS=$CFLAGS
-  CFLAGS=-Werror
-fi
+PAC_PUSH_FLAG([CFLAGS])
+# force an error exit if the weak attribute isn't understood
+CFLAGS=-Werror
 AC_TRY_COMPILE([int foo(int) __attribute__((weak,alias("__foo")));],[int a;],
 pac_cv_attr_weak_alias=yes,pac_cv_attr_weak_alias=no)
 # Restore original CFLAGS
-if test $GCC = yes ; then
-  CFLAGS=$save_CFLAGS
-fi])
+PAC_POP_FLAG([CFLAGS])])
 if test "$pac_cv_attr_weak_alias" = "yes" ; then
     AC_DEFINE(HAVE_WEAK_ATTRIBUTE,1,[Attribute style weak pragma])
 fi

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

Summary of changes:
 confdb/aclocal_cc.m4 |   13 ++++---------
 1 files changed, 4 insertions(+), 9 deletions(-)


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