--- fltk-1.3.3.old/test/sudoku.cxx
+++ fltk-1.3.3/test/sudoku.cxx
@@ -47,6 +47,10 @@
 #endif // !WIN32
 
 #ifdef HAVE_ALSA_ASOUNDLIB_H
+#undef HAVE_ALSA_ASOUNDLIB_H
+#endif
+
+#ifdef HAVE_ALSA_ASOUNDLIB_H
 #  define ALSA_PCM_NEW_HW_PARAMS_API
 #  include <alsa/asoundlib.h>
 #endif // HAVE_ALSA_ASOUNDLIB_H