diff -Naur bacula-9.4.2.old/autoconf/configure.in bacula-9.4.2/autoconf/configure.in
--- bacula-9.4.2.old/autoconf/configure.in	2019-04-18 11:49:06.099005902 +0200
+++ bacula-9.4.2/autoconf/configure.in	2019-04-18 11:49:27.545391181 +0200
@@ -2993,11 +2993,6 @@
 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"