"undefined reference" errors at link-time. The true reasons are
unknown, however FreeBSD 8.x includes GCC 4.2.1 in the base system,
which might be buggy. */
-#if __GNUC__ >= 4 && !defined(freebsd_HOST_OS)
+/* On Windows, with gcc 4.5.0-1, using visibility hidden gives:
+ error: visibility attribute not supported in this configuration; ignored
+ */
+#if __GNUC__ >= 4 && !defined(freebsd_HOST_OS) && !defined(mingw32_HOST_OS)
#pragma GCC visibility push(hidden)
#endif