--- xcompmgr-1.1/configure.ac.orig	2004-12-21 22:43:06.000000000 -0200
+++ xcompmgr-1.1/configure.ac	2004-12-21 22:43:18.000000000 -0200
@@ -23,7 +23,7 @@
 AC_FUNC_MALLOC
 AC_CHECK_FUNCS([gettimeofday localtime_r])
 
-PKG_CHECK_MODULES(XCOMPMGR, xcomposite xfixes xdamage xrender)
+PKG_CHECK_MODULES(XCOMPMGR, xcomposite xfixes xdamage xrender xau)
 
 AC_CONFIG_FILES([Makefile])
 AC_OUTPUT