diff -Naur bacula-11.0.1.old/autoconf/configure.in bacula-11.0.1/autoconf/configure.in
--- bacula-11.0.1.old/autoconf/configure.in 2021-02-11 14:09:48.635047858 +0100
+++ bacula-11.0.1/autoconf/configure.in 2021-02-11 14:10:48.026027852 +0100
@@ -3274,11 +3274,6 @@
AC_DEFINE(FDLIBS)
CFLAGS=${CFLAGS--O}
-
-if test x$have_gcc = xyes ; then
- CPPFLAGS="$CPPFLAGS -x c++ -fno-strict-aliasing -fno-exceptions -fno-rtti"
- CFLAGS="$CFLAGS -x c++ -fno-strict-aliasing -fno-exceptions -fno-rtti"
-fi
LDFLAGS=${LDFLAGS--O}
CPPFLAGS="$CPPFLAGS"
CFLAGS="$CFLAGS"