X-Git-Url: http://demsky.eecs.uci.edu/git/?a=blobdiff_plain;f=autoconf%2Fm4%2Fcxx_flag_check.m4;h=4b097445501519d0a1512f64e4e8a6104aca744a;hb=e8dceea402259651fca27c616a35227ad2971a91;hp=62454b7147f9051382a62a5ec70e5291a215f988;hpb=9993a3aebb27c5cac55429a23af2d2a0f129cb95;p=oota-llvm.git

diff --git a/autoconf/m4/cxx_flag_check.m4 b/autoconf/m4/cxx_flag_check.m4
index 62454b7147f..4b097445501 100644
--- a/autoconf/m4/cxx_flag_check.m4
+++ b/autoconf/m4/cxx_flag_check.m4
@@ -1,2 +1,2 @@
 AC_DEFUN([CXX_FLAG_CHECK],
-  [AC_SUBST($1, `$CXX -Werror $2 -fsyntax-only -xc /dev/null 2>/dev/null && echo $2`)])
+  [AC_SUBST($1, `$CXX -Werror patsubst($2, [^-Wno-], [-W]) -fsyntax-only -xc /dev/null 2>/dev/null && echo $2`)])