/home/jello/build_dir/target-aarch64_generic_glibc/fstools-2018-01-02-11efbf3b/libfstools/overlay.c: At top level: cc1: error: unrecognized command line option '-Wno-format-truncation' [-Werror] cc1: all warnings being treated as errors make[6]: *** [CMakeFiles/fstools.dir/libfstools...