How include header file?

[Injeckt]

On Wednesday, 7 September 2022 at 19:38:52 UTC, H. S. Teoh wrote:
> On Wed, Sep 07, 2022 at 06:11:14PM +0000, Injeckt via 
> Digitalmars-d-learn wrote:
>> I need to include this Ws2tcpip.h header file to my project. 
>> How can I do this? It's all because I need inet_ntop function 
>> from this header file.
>
> If that's the only function you need, you can just copy the 
> declaration of inet_ntop into your .d file and mark it as 
> extern(C). E.g., on my OS it's declared as:
>
> 	const char *inet_ntop(int af, const void *restrict src, char 
> *restrict dst, socklen_t size);
>
> Convert it to D:
>
> 	extern(C) const(char)* inet_ntop(int af, const(void)* src, 
> char* dst, socklen_t size);
>
> You probably also need:
>
> 	alias socklen_t = ...;
>
> The definition can be found in your system header files. 
> Probably you can just get away with size_t.
>
>
> T

It doesn't work. "Reference to an unresolved external symbol 
_inet_ntop". I guess I can add my utils.c to my .d project when I 
compile project and I need write in this file function wrapper of 
inet_ntop.