Olaf Hering writes ("[Xen-devel] [PATCH v2] qemu/configure: fix CFLAGS handling for i386"): > configure will generate incorrect CFLAGS which will lead to compile > errors due to unknown gcc options, iff CFLAGS was already in the > environment during configure invocation.
Don't do that then. In general, CFLAGS is not a variable you can safely set in your environment when invoking a nonconsenting build system. Ian.