http://bugs.gentoo.org/194921

--- configure.ac
+++ configure.ac
@@ -757,11 +757,9 @@
 dnl *************************************
 dnl (already done) enable_werror=no
 
-AC_ARG_ENABLE(compile-werror,
-	      [  --enable-compile-werror
-                          Causes warnings to be treated as errors in GCC],
-	      enable_werror=yes)
-if test "x$GCC" = "xyes" -a "x$enable_werror" = "xyes"; then
+AC_ARG_ENABLE([compile-werror], AS_HELP_STRING([--enable-compile-werror], [Causes warnings to be treated as errors in GCC (default: disabled)]))
+
+if test "x$GCC" = "xyes" -a "x$enable_compile_werror" = "xyes"; then
 	CFLAGS="$CFLAGS -Werror"
 fi