[Opalvoip-devel] Building Opal 3.18.8 + OpenSSL 1.1.1.s + the latest Windows 10 SDK = error LNK2005 with SocketNotificationRetrieveEvents function.

[<pat...@al...>]

Hello All,

 

When building Opal 3.18.8 with OpenSSL 1.1.1s, and the latest Windows 10
SDKs (10.0.22621.0 for example), we get the following errors:

 

opal64sd.lib(alloc.obj) : error LNK2005: SocketNotificationRetrieveEvents
déjà défini(e) dans opal64sd.lib(srtp.obj)

opal64sd.lib(datatypes.obj) : error LNK2005:
SocketNotificationRetrieveEvents déjà défini(e) dans opal64sd.lib(srtp.obj)

…

 

This error is due to the presence of a new inline function that is directly
defined in winsock2.h :

#if !defined(__midl)

inline

UINT32

SocketNotificationRetrieveEvents (

    _In_ OVERLAPPED_ENTRY* notification

    )

{

    return (UINT32)notification->dwNumberOfBytesTransferred;

}

#endif

 

winsock2.h is included in different places, so we have this error.

 

There is, perhaps, a trick with __midl, unfortunately I have not been able
to understand how it works.

 

Do you have any idea how to build without errors with this new function?

 

Thanks in advance.

Patrice.