X-Git-Url: http://www.chiark.greenend.org.uk/ucgi/~ianmdlvl/git?p=elogind.git;a=blobdiff_plain;f=m4%2Fattributes.m4;h=f0bcf2421190af6d2a80529f45f1d9068bafaa42;hp=e354375e349a385b7b8e70dd29f10a5ba2d6abe3;hb=1a5613266a93ddb197bbae137cd61fae25600718;hpb=19c5f19d69bb5f520fa7213239490c55de06d99d

diff --git a/m4/attributes.m4 b/m4/attributes.m4
index e354375e3..f0bcf2421 100644
--- a/m4/attributes.m4
+++ b/m4/attributes.m4
@@ -41,7 +41,7 @@ AC_DEFUN([CC_CHECK_FLAG_APPEND], [
   AC_CACHE_CHECK([if $CC supports flag $3 in envvar $2],
                  AS_TR_SH([cc_cv_$2_$3]),
 		 [eval "AS_TR_SH([cc_save_$2])='${$2}'"
-		  eval "AS_TR_SH([$2])='$3'"
+		  eval "AS_TR_SH([$2])='-Werror $3'"
 		  AC_COMPILE_IFELSE([AC_LANG_SOURCE([int a = 0; int main(void) { return a; } ])],
                                     [eval "AS_TR_SH([cc_cv_$2_$3])='yes'"],
                                     [eval "AS_TR_SH([cc_cv_$2_$3])='no'"])