+
+/** Multi-valued string option. @target should be a growing array of `char *`s. **/
+#define OPT_STRING_MULTIPLE(shortopt, longopt, target, fl, desc) { .letter = shortopt, .name = longopt, .ptr = CHECK_PTR_TYPE(&target, char ***), .help = desc, .flags = fl, .cls = OPT_CL_MULTIPLE, .type = CT_STRING }
+
+/** Multi-valued integer option. @target should be a growing array of `int`s. **/
+#define OPT_INT_MULTIPLE(shortopt, longopt, target, fl, desc) { .letter = shortopt, .name = longopt, .ptr = CHECK_PTR_TYPE(&target, int **), .help = desc, .flags = fl, .cls = OPT_CL_MULTIPLE, .type = CT_INT }
+
+/** Multi-valued unsigned integer option. @target should be a growing array of `uint`s. **/
+#define OPT_UINT_MULTIPLE(shortopt, longopt, target, fl, desc) { .letter = shortopt, .name = longopt, .ptr = CHECK_PTR_TYPE(&target, uint **), .help = desc, .flags = fl, .cls = OPT_CL_MULTIPLE, .type = CT_INT }
+
+/** Multi-valued 64-bit integer option. @target should be a growing array of `u64`s. **/
+#define OPT_U64_MULTIPLE(shortopt, longopt, target, fl, desc) { .letter = shortopt, .name = longopt, .ptr = CHECK_PTR_TYPE(&target, u64 **), .help = desc, .flags = fl, .cls = OPT_CL_MULTIPLE, .type = CT_U64 }
+
+/** Multi-valued floating-point option. @target should be a growing array of `double`s. **/
+#define OPT_DOUBLE_MULTIPLE(shortopt, longopt, target, fl, desc) { .letter = shortopt, .name = longopt, .ptr = CHECK_PTR_TYPE(&target, double **), .help = desc, .flags = fl, .cls = OPT_CL_MULTIPLE, .type = CT_DOUBLE }
+
+/** Multi-valued IPv4 address option. @target should be a growing array of `u32`s. **/
+#define OPT_IP_MULTIPLE(shortopt, longopt, target, fl, desc) { .letter = shortopt, .name = longopt, .ptr = CHECK_PTR_TYPE(&target, u32 **), .help = desc, .flags = fl, .cls = OPT_CL_MULTIPLE, .type = CT_IP }
+
+/** Switch option. @target should be a variable of type `int` and it will be set to the value @val. **/