Index: driver/cfa.cc
===================================================================
--- driver/cfa.cc	(revision c11e31cbaeeeb0709ef952223453f301da13d515)
+++ driver/cfa.cc	(revision 5c7fb6c8dfabfe6c6b4c365a4f378706430fd1bf)
@@ -294,4 +294,6 @@
 	args[nargs] = "-Wno-deprecated"; 
 	nargs += 1;
+	args[nargs] = "--std=c99";
+	nargs += 1;
 	args[nargs] = ( *new string( string("-B") + Bprefix + "/" ) ).c_str();
 	nargs += 1;