Apply patch, then run autoconf and autoheader.

diff -ur Python-2.4.1/configure.in Python-2.4.1.visibility/configure.in
--- Python-2.4.1/configure.in	2005-03-29 07:23:34.000000000 +0800
+++ Python-2.4.1.visibility/configure.in	2005-04-29 10:33:40.000000000 +0800
@@ -3106,6 +3106,76 @@
 #endif
 ])
 
+# Check for ELF symbol visibility support
+
+# GLIB_CHECK_COMPILE_WARNINGS(PROGRAM, [ACTION-IF-FOUND], [ACTION-IF-NOT-FOUND])# ---------------------------------------------------------------------
+# Try to compile PROGRAM, check for warnings
+m4_define([GLIB_CHECK_COMPILE_WARNINGS],
+[m4_ifvaln([$1], [AC_LANG_CONFTEST([$1])])dnl
+rm -f conftest.$ac_objext
+glib_ac_compile_save="$ac_compile"
+ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext'
+AS_IF([_AC_EVAL_STDERR($ac_compile) &&
+         AC_TRY_COMMAND([(if test -s conftest.err; then false ; else true; fi)])],
+      [$2],
+      [echo "$as_me: failed program was:" >&AS_MESSAGE_LOG_FD
+cat conftest.$ac_ext >&AS_MESSAGE_LOG_FD
+m4_ifvaln([$3],[$3])dnl])dnl
+ac_compile="$glib_ac_compile_save"
+rm -f conftest.$ac_objext conftest.err m4_ifval([$1], [conftest.$ac_ext])[]dnl
+])# GLIB_CHECK_COMPILE_WARNINGS
+
+AC_MSG_CHECKING(for GNUC visibility attribute)
+GLIB_CHECK_COMPILE_WARNINGS([
+void
+__attribute__ ((visibility ("hidden")))
+     f_hidden (void)
+{
+}
+void
+__attribute__ ((visibility ("internal")))
+     f_internal (void)
+{
+}
+void
+__attribute__ ((visibility ("protected")))
+     f_protected (void)
+{
+}
+void
+__attribute__ ((visibility ("default")))
+     f_default (void)
+{
+}
+int main (int argc, char **argv)
+{
+        f_hidden();
+        f_internal();
+        f_protected();
+        f_default();
+        return 0;
+}
+],g_have_gnuc_visibility=yes,g_have_gnuc_visibility=no)
+AC_MSG_RESULT($g_have_gnuc_visibility)
+if test x$g_have_gnuc_visibility = xyes; then
+  AC_DEFINE(HAVE_GNUC_VISIBILITY, 1, [supports GCC visibility attributes])
+fi
+
+AC_MSG_CHECKING(whether $CC accepts -fvisibility=hidden)
+AC_CACHE_VAL(ac_cv_fvisibility_ok,
+[ac_save_cc="$CC"
+CC="$CC -fvisibility=hidden"
+AC_TRY_RUN([int main() { return 0; }],
+  ac_cv_fvisibility_ok=yes,
+  ac_cv_fvisibility_ok=no,
+  ac_cv_fvisibility_ok=no)
+CC="$ac_save_cc"])
+AC_MSG_RESULT($ac_cv_fvisibility_ok)
+if test $ac_cv_fvisibility_ok = yes; then
+  BASECFLAGS="$BASECFLAGS -fvisibility=hidden"
+fi
+
+
 AC_SUBST(THREADHEADERS)
 
 for h in `(cd $srcdir;echo Python/thread_*.h)`
diff -ur Python-2.4.1/Include/pyport.h Python-2.4.1.visibility/Include/pyport.h
--- Python-2.4.1/Include/pyport.h	2004-09-24 03:11:21.000000000 +0800
+++ Python-2.4.1.visibility/Include/pyport.h	2005-04-29 14:33:49.696637736 +0800
@@ -514,6 +514,20 @@
 #	endif /* HAVE_DECLSPEC */
 #endif /* Py_ENABLE_SHARED */
 
+#ifdef HAVE_GNUC_VISIBILITY
+#	ifdef Py_BUILD_CORE
+#		define PyAPI_FUNC(RTYPE) __attribute__((visibility("protected"))) RTYPE
+#		define PyAPI_DATA(RTYPE) extern __attribute__((visibility("protected"))) RTYPE
+#		define PyMODINIT_FUNC void
+#	else /* Py_BUILD_CORE */
+#		if defined(__cplusplus)
+#			define PyMODINIT_FUNC extern "C" void __attribute__((visibility("default")))
+#		else /* __cplusplus */
+#			define PyMODINIT_FUNC void __attribute__((visibility("default")))
+#		endif
+#	endif
+#endif /* HAVE_GNUC_VISIBILITY */
+
 /* If no external linkage macros defined by now, create defaults */
 #ifndef PyAPI_FUNC
 #	define PyAPI_FUNC(RTYPE) RTYPE
diff -ur Python-2.4.1/Modules/cjkcodecs/cjkcodecs.h Python-2.4.1.visibility/Modules/cjkcodecs/cjkcodecs.h
--- Python-2.4.1/Modules/cjkcodecs/cjkcodecs.h	2004-08-20 01:49:56.000000000 +0800
+++ Python-2.4.1.visibility/Modules/cjkcodecs/cjkcodecs.h	2005-04-29 11:05:51.000000000 +0800
@@ -381,7 +381,7 @@
 #endif
 
 #define I_AM_A_MODULE_FOR(loc)						\
-	void								\
+	PyMODINIT_FUNC								\
 	init_codecs_##loc(void)						\
 	{								\
 		PyObject *m = Py_InitModule("_codecs_" #loc, __methods);\
diff -ur Python-2.4.1/Modules/cjkcodecs/multibytecodec.c Python-2.4.1.visibility/Modules/cjkcodecs/multibytecodec.c
--- Python-2.4.1/Modules/cjkcodecs/multibytecodec.c	2004-08-20 01:49:56.000000000 +0800
+++ Python-2.4.1.visibility/Modules/cjkcodecs/multibytecodec.c	2005-04-29 11:07:01.000000000 +0800
@@ -1262,7 +1262,7 @@
 	{NULL, NULL},
 };
 
-void
+PyMODINIT_FUNC
 init_multibytecodec(void)
 {
 	Py_InitModule("_multibytecodec", __methods);
diff -ur Python-2.4.1/Modules/_hotshot.c Python-2.4.1.visibility/Modules/_hotshot.c
--- Python-2.4.1/Modules/_hotshot.c	2004-08-03 16:33:55.000000000 +0800
+++ Python-2.4.1.visibility/Modules/_hotshot.c	2005-04-29 11:04:17.000000000 +0800
@@ -1627,7 +1627,7 @@
 };
 
 
-void
+PyMODINIT_FUNC
 init_hotshot(void)
 {
     PyObject *module;
diff -ur Python-2.4.1/Modules/linuxaudiodev.c Python-2.4.1.visibility/Modules/linuxaudiodev.c
--- Python-2.4.1/Modules/linuxaudiodev.c	2002-11-28 06:19:15.000000000 +0800
+++ Python-2.4.1.visibility/Modules/linuxaudiodev.c	2005-04-29 11:04:39.000000000 +0800
@@ -485,7 +485,7 @@
     { 0, 0 },
 };
 
-void
+PyMODINIT_FUNC
 initlinuxaudiodev(void)
 {
     PyObject *m;
diff -ur Python-2.4.1/Modules/nismodule.c Python-2.4.1.visibility/Modules/nismodule.c
--- Python-2.4.1/Modules/nismodule.c	2004-07-10 08:57:37.000000000 +0800
+++ Python-2.4.1.visibility/Modules/nismodule.c	2005-04-29 11:04:57.000000000 +0800
@@ -374,7 +374,7 @@
 	{NULL,		NULL}		 /* Sentinel */
 };
 
-void
+PyMODINIT_FUNC
 initnis (void)
 {
 	PyObject *m, *d;
diff -ur Python-2.4.1/Modules/ossaudiodev.c Python-2.4.1.visibility/Modules/ossaudiodev.c
--- Python-2.4.1/Modules/ossaudiodev.c	2005-03-09 08:55:18.000000000 +0800
+++ Python-2.4.1.visibility/Modules/ossaudiodev.c	2005-04-29 11:05:11.000000000 +0800
@@ -929,7 +929,7 @@
 }
 
 
-void
+PyMODINIT_FUNC
 initossaudiodev(void)
 {
     PyObject *m;