This option no longer exists in gcc 3.4.1 RP - 18/07/2008 Index: libmad-0.15.1b/configure.ac =================================================================== --- libmad-0.15.1b.orig/configure.ac 2008-07-18 15:45:30.000000000 +0100 +++ libmad-0.15.1b/configure.ac 2008-07-18 15:45:37.000000000 +0100 @@ -140,7 +140,6 @@ case "$optimize" in -O|"-O "*) optimize="-O" - optimize="$optimize -fforce-mem" optimize="$optimize -fforce-addr" : #x optimize="$optimize -finline-functions" : #- optimize="$optimize -fstrength-reduce"