2005-02-04  Matthias Clasen  <mclasen@redhat.com>

	* configure.in: Define a HAVE_GNUC_VISIBILITY automake
	conditional.

	* glib/Makefile.am (TESTS): Only check the abi if
	the compiler supports visibility, otherwise we
	know there will be (harmless) extra symbols.
	(#166181, Ed Avis)