CC_CHECK_FLAGS_APPEND([with_cppflags], [CPPFLAGS], [\
-Wp,-D_FORTIFY_SOURCE=2])], [
python_extra_cflags=-Wp,-U_FORTIFY_SOURCE
CC_CHECK_FLAGS_APPEND([with_cppflags], [CPPFLAGS], [\
-Wp,-D_FORTIFY_SOURCE=2])], [
python_extra_cflags=-Wp,-U_FORTIFY_SOURCE