--- configure.gcc34-no-builtin	2004-06-04 13:10:08.251245000 +0200
+++ configure	2004-06-04 13:19:25.722497240 +0200
@@ -1505,6 +1505,7 @@ CheckForLibrary()
     f=$1; shift
     libs="$@";
     cat>t.c<<EOF
+extern int $f();
 int t() { $f(); return 0; }
 int main(){ t(); return 0; }
 EOF