On 3 March 2014 11:59, phi gcc wrote: > > /usr/lib/gcc/aarch64-linux-gnu/4.8/cc1 -quiet -v -imultiarch aarch64-linux-gnu > e.c -quiet -dumpbase e.c -auxbase e -Wformat=0 -version > -fstack-protector -Wformat -Wformat-security > -o /tmp/ccqm0LDE.s > > =============================== > Above I am afraid -Wformat=0 is defeated by folowing -Wformat That is added by Ubuntu, it's not there for FSF versions of GCC: https://wiki.ubuntu.com/ToolChain/CompilerFlags As I said, you have a modified GCC.