check_once_cc_ccache_compare
check_once_cc_ccache_compare(ccache_a, ccache_a, &equal, ccNoError, "compare ccache with same pointer");
check_once_cc_ccache_compare(ccache_a, ccache_b, &equal, ccNoError, "compare different handles to same ccache");
check_once_cc_ccache_compare(ccache_a, ccache_b, &equal, ccNoError, "compare different ccaches");
check_once_cc_ccache_compare(ccache_a, NULL, &equal, ccErrBadParam, "NULL compare_to ccache");
check_once_cc_ccache_compare(ccache_a, ccache_b, NULL, ccErrBadParam, "NULL out param");
cc_int32 check_once_cc_ccache_compare(cc_ccache_t ccache, cc_ccache_t compare_to, cc_uint32 *equal, cc_int32 expected_err, const char *description);