Index: src/fluidsynth.c
--- src/fluidsynth.c.orig
+++ src/fluidsynth.c
@@ -324,7 +324,9 @@ int main(int argc, char** argv)
       {"audio-groups", 1, 0, 'G'},
       {"chorus", 1, 0, 'C'},
       {"connect-jack-outputs", 0, 0, 'j'},
+#ifdef LASH_ENABLED
       {"disable-lash", 0, 0, 'l'},
+#endif
       {"dump", 0, 0, 'd'},
       {"fast-render", 1, 0, 'F'},
       {"gain", 1, 0, 'g'},