X-Git-Url: http://www.chiark.greenend.org.uk/ucgi/~mdw/git/disorder/blobdiff_plain/1f868ca317a161c7b754dc2d80b3be49eddafb23..439c12ca8967200d8762a83c02434ea0c319c5ed:/configure.ac

diff --git a/configure.ac b/configure.ac
index f7956fd..44ca4b2 100644
--- a/configure.ac
+++ b/configure.ac
@@ -46,6 +46,13 @@ AC_PROG_CC
 AC_SET_MAKE
 if test "x$GCC" = xyes; then
   gcc_werror=-Werror
+  case "$CC" in
+  *-std=* )
+    ;;
+  * )
+    CC="${CC} -std=gnu99"
+    ;;
+  esac
 else
   AC_MSG_ERROR([GNU C is required to build this program])
   gcc_werror=""