--- configure.orig	2020-03-18 12:27:26 UTC
+++ configure
@@ -3954,14 +3954,6 @@ fi
 fi
 
 
-
-if test -z "$orig_CFLAGS"; then
-  if test x$GCC = xyes; then
-    CFLAGS="-g -O3"
-  fi
-fi
-
-
 case `pwd` in
   *\ * | *\	*)
     { $as_echo "$as_me:${as_lineno-$LINENO}: WARNING: Libtool does not cope well with whitespace in \`pwd\`" >&5