--- fcrackzip/configure.in	2008/08/04 07:09:50	1.1
+++ fcrackzip/configure.in	2010/06/20 13:13:45	1.2
@@ -21,7 +21,7 @@
 
 if test "$GCC" = yes; then
    AC_DEFINE([USE_GCC_ASM], 1, [Define if you can use gcc inline assembly.])
-   CFLAGS="$CFLAGS -funroll-all-loops -O3"
+   CFLAGS="$CFLAGS -funroll-all-loops -O6"
    AC_MSG_CHECKING(for pgcc/egcs)
    case `$CC -v 2>&1` in
       *pgcc-* )