--- configure.orig	2021-01-21 09:14:17 UTC
+++ configure
@@ -18084,7 +18084,7 @@ if test -z "$GCC"; then
                 ;;
         *)
                 DEBUG="-g"
-                CFLAGS="-O"
+                CFLAGS=""
                 PROFILE="-g -p"
                 ;;
         esac
@@ -18107,8 +18107,8 @@ else
                 ;;
         *)
                 DEBUG="-g -Wall -fsigned-char"
-                CFLAGS="-O2 -fsigned-char"
-                PROFILE="-O2 -g -pg -fsigned-char"
+                CFLAGS="-fsigned-char"
+                PROFILE="-g -pg -fsigned-char"
                 ;;
         esac
 fi