-O2 -pipe -march=znver2 -mtune=znver2 -fno-tree-loop-distribute-patterns -fno-tree-loop-vectorize -frecord-gcc-switches -fdiagnostics-color=never -ggdb -Werror=odr -Werror=lto-type-mismatch -Werror=strict-aliasing -fno-strict-aliasing
