diff -ur xine-lib-1.1.18.orig/src/audio_out/audio_alsa_out.c xine-lib-1.1.18/src/audio_out/audio_alsa_out.c
--- xine-lib-1.1.18.orig/src/audio_out/audio_alsa_out.c	2010-01-14 23:17:54.000000000 +0100
+++ xine-lib-1.1.18/src/audio_out/audio_alsa_out.c	2010-02-24 21:38:21.022134045 +0100
@@ -41,6 +41,7 @@
 #ifdef HAVE_ALLOCA_H
 #include <alloca.h>
 #endif
+#include <assert.h>
 
 #define ALSA_PCM_NEW_HW_PARAMS_API
 #define ALSA_PCM_NEW_SW_PARAMS_API
Nur in xine-lib-1.1.18/src/xine-engine: install_plugins_helper.c.
Nur in xine-lib-1.1.18/src/xine-engine: install_plugins_helper.h.