Index: glib-2.48.0/configure.ac
===================================================================
--- glib-2.48.0.orig/configure.ac	2016-04-19 16:21:59.000000000 +0200
+++ glib-2.48.0/configure.ac	2016-04-19 16:22:34.000000000 +0200
@@ -2819,6 +2819,8 @@
 #define G_GNUC_INTERNAL __hidden
 #elif defined (__GNUC__) && defined (G_HAVE_GNUC_VISIBILITY)
 #define G_GNUC_INTERNAL __attribute__((visibility("hidden")))
+#elif defined (_AIX)
+#define G_GNUC_INTERNAL __attribute__((visibility("hidden")))
 #else
 #define G_GNUC_INTERNAL
 #endif