[AS_IF([test "x$ac_c_gcc_recent" = xyes],
[_APPEND_COMPILE_FLAGS_ERROR([-D_FORTIFY_SOURCE=2])
#_APPEND_COMPILE_FLAGS_ERROR([-Wstack-protector])
[AS_IF([test "x$ac_c_gcc_recent" = xyes],
[_APPEND_COMPILE_FLAGS_ERROR([-D_FORTIFY_SOURCE=2])
#_APPEND_COMPILE_FLAGS_ERROR([-Wstack-protector])