Created attachment 28672 [details] [review]
Patch fixing the problem.

gibber-util.c doesn't compile on NetBSD-5.99.15/amd64:

In file included from gibber-util.c:26:
gibber-util.h:29: warning: 'struct sockaddr_storage' declared inside parameter list
gibber-util.h:29: warning: its scope is only this definition or declaration, which is probably not what you want
gibber-util.c:29: warning: 'struct sockaddr_storage' declared inside parameter list
gibber-util.c:30: error: conflicting types for 'gibber_normalize_address'
gibber-util.h:29: error: previous declaration of 'gibber_normalize_address' was here
gibber-util.c: In function 'gibber_normalize_address':
gibber-util.c:34: error: dereferencing pointer to incomplete type
gibber-util.c:34: error: 'AF_INET6' undeclared (first use in this function)
gibber-util.c:34: error: (Each undeclared identifier is reported only once
gibber-util.c:34: error: for each function it appears in.)
gibber-util.c:34: warning: implicit declaration of function 'IN6_IS_ADDR_V4MAPPED'
gibber-util.c:34: error: dereferencing pointer to incomplete type
gibber-util.c:40: error: dereferencing pointer to incomplete type
gibber-util.c:41: error: dereferencing pointer to incomplete type
gibber-util.c:43: error: dereferencing pointer to incomplete type
gibber-util.c:43: error: 'AF_INET' undeclared (first use in this function)
gibber-util.c:44: error: dereferencing pointer to incomplete type
gibber-util.c:45: error: dereferencing pointer to incomplete type

The attached patch fixes the problem.