clang: warning: argument unused during compilation: '-march=armv7-a' [-Wunused-command-line-argument] clang: warning: argument unused during compilation: '-march=armv7-a' [-Wunused-command-line-argument] clang: warning: argument unused during compilation: '-march=armv7-a' [-Wunused-command-line-argument] clang: warning: argument unused during compilation: '-march=armv7-a' [-Wunused-command-line-argument] clang: warning: argument unused during compilation: '-march=armv7-a' [-Wunused-command-line-argument] clang: warning: argument unused during compilation: '-march=armv7-a' [-Wunused-command-line-argument]