check_c_source_compiles("
#include <limits.h>

int main(int argc, char *argv[]) {
	int i = INT_MIN;
	unsigned u = 0;
	long l = LONG_MIN;
	unsigned long ul = 0;
	i = INT_MAX;
	u = UINT_MAX;
	l = LONG_MAX;
	ul = ULONG_MAX;
	return (i != INT_MAX || u != UINT_MAX || l != LONG_MAX || ul != LONG_MAX);
}
" _MK_HAVE_LIMITS_H)