diff -urN bmpx-0.40.14/configure.ac bmpx-0.40.14.new/configure.ac
--- bmpx-0.40.14/configure.ac	2008-07-26 00:26:53.000000000 +0200
+++ bmpx-0.40.14.new/configure.ac	2008-07-26 00:29:27.000000000 +0200
@@ -398,7 +398,7 @@
     AC_LANG_SAVE
     AC_LANG_CPLUSPLUS
 
-    AC_CHECK_LIB([sidplay], [C64_clockSpeed], [have_sid=yes], [have_sid=no])
+    AC_CHECK_MEMBER([struct sidTuneInfo.loadAddr], [have_sid=yes], [have_sid=no], [#include <sidplay/sidtune.h>])
 
     if test "$have_sid" = "yes"; then
         AC_DEFINE([HAVE_SID], [1], [have sid])