--- a/configure.in	Sat Mar 13 00:03:32 2004 +0000
+++ b/configure.in	Sat May 20 02:38:08 2006 +0000
@@ -10,11 +10,14 @@
 AM_PROG_CC_STDC
 AC_HEADER_STDC
 
-pkg_modules="libgnomeui-2.0"
-PKG_CHECK_MODULES(PACKAGE, [$pkg_modules])
+PKG_CHECK_MODULES(PACKAGE, 
+   [ libgnomeui-2.0 dnl
+     esound ])
 AC_SUBST(PACKAGE_CFLAGS)
 AC_SUBST(PACKAGE_LIBS)
 
+AC_CHECK_LIB(GL, glXQueryVersion)
+
 GETTEXT_PACKAGE=dream
 AC_SUBST(GETTEXT_PACKAGE)
 AC_DEFINE_UNQUOTED(GETTEXT_PACKAGE,"$GETTEXT_PACKAGE")