check_c_source_compiles("
#include <sys/types.h>
int main(int argc, char *argv[]) {
	int8_t s8 = 2;
	u_int8_t u8 = 2;
	int32_t s32 = 1234;
	u_int32_t u32 = 5678;
	return (s8+u8 == 4 && s32+u32 > 6000 ? 0 : 1);
}
" _MK_HAVE_SYS_TYPES_H)