socket feature test at compile time added by rivo on Tue Jul 30 23:56:04 2013

//socket-features.c

#include "socket.h"

#ifdef AF_UNIX
(register-feature! 'AF_UNIX)
#else
(unregister-feature! 'AF_UNIX)
#endif

// command line
gcc -E socket-features.c | grep "register-feature!" > socket-config.scm