1mingw32_CFLAGS=-pipe 2mingw32_CXXFLAGS=$(mingw32_CFLAGS) 3 4mingw32_release_CFLAGS=-O2 5mingw32_release_CXXFLAGS=$(mingw32_release_CFLAGS) 6 7mingw32_debug_CFLAGS=-O1 8mingw32_debug_CXXFLAGS=$(mingw32_debug_CFLAGS) 9 10mingw32_debug_CPPFLAGS=-D_GLIBCXX_DEBUG -D_GLIBCXX_DEBUG_PEDANTIC 11