--- /dev/null
+diff -Nur ccrypt-1.7.orig/configure.in ccrypt-1.7.kill-O3/configure.in
+--- ccrypt-1.7.orig/configure.in 2004-03-29 06:52:12.000000000 +0200
++++ ccrypt-1.7.kill-O3/configure.in 2006-08-05 14:41:22.000000000 +0200
+@@ -46,16 +46,11 @@
+ dnl Check for programs.
+ AC_PROG_CC
+
+-dnl Note: CFLAGS can now be specified by the user at ./configure time,
+-dnl but we enforce -O3, as this really makes a big difference in terms
+-dnl of performance for ccrypt. (74% faster than -O0, 19% faster than
+-dnl -O2). The space/time tradeoff is biased in favor of time for ccrypt.
+-
+ if test "$GCC" = "yes"; then
+ if test "$iCFLAGS" = ""; then
+- CFLAGS="-O3 -Wall"
++ CFLAGS="-Wall"
+ else
+- CFLAGS="$iCFLAGS -O3"
++ CFLAGS="$iCFLAGS"
+ fi
+ fi
+