+ AX_APPEND_COMPILE_FLAGS([-Wswitch-enum])
+ AX_APPEND_COMPILE_FLAGS([-Wundef])
+ AX_APPEND_COMPILE_FLAGS([-Wunused-result])
+ AX_APPEND_COMPILE_FLAGS([-Wunused-variable])
+ AX_APPEND_COMPILE_FLAGS([-Wwrite-strings])
+ AX_APPEND_COMPILE_FLAGS([-fPIE])
+ AX_APPEND_COMPILE_FLAGS([-floop-parallelize-all])
+ AX_APPEND_COMPILE_FLAGS([-fwrapv])
+ AX_APPEND_COMPILE_FLAGS([-ggdb])
+ AX_APPEND_COMPILE_FLAGS([-std=c99])