Ok, after digging once more into the problem I decided to use a *Windows 7/32* machine. The built worked effortless!! A very nice run. Back to a *Windows 7/64*, I'm still having troubles. Some of the issue seems related to gawk while building libsofia_sip And it seems that once the issue occurs, you're stuck with the built.... In any case please note the following remarks: * 1) if you uses Windows sdk 7.1* edit fake-rfc2533.h and comment out : #ifdef nodef // *****add this #ifndef HAVE_STRUCT_ADDRINFO struct addrinfo { int ai_flags; /* AI_PASSIVE, AI_CANONNAME */ int ai_family; /* PF_xxx */ int ai_socktype; /* SOCK_xxx */ int ai_protocol; /* 0 or IPPROTO_xxx for IPv4 and IPv6 */ size_t ai_addrlen; /* length of ai_addr */ char *ai_canonname; /* canonical name for hostname */ struct sockaddr *ai_addr; /* binary address */ struct addrinfo *ai_next; /* next structure in linked list */ }; #endif /* !HAVE_STRUCT_ADDRINFO */ #endif // *****add this *2) in sofia_presence.c* if (mod_sofia_globals.debug_presence > 1) { int i; // to be added for (i = 0; i < argc; i++) {