Rename sk_new() to avoid name collision with OpenSSL.

lib/socket.h

@@ -48,7 +48,9 @@ typedef struct birdsock {
   char *password;				/* Password for MD5 authentication */
 } sock;
 
-sock *sk_new(pool *);			/* Allocate new socket */
+sock *sock_new(pool *);			/* Allocate new socket */
+#define sk_new(X) sock_new(X)		/* Wrapper to avoid name collision with OpenSSL */
+
 int sk_open(sock *);			/* Open socket */
 int sk_send(sock *, unsigned len);	/* Send data, <0=err, >0=ok, 0=sleep */
 int sk_send_to(sock *, unsigned len, ip_addr to, unsigned port); /* sk_send to given destination */

sysdep/unix/io.c

@@ -588,9 +588,12 @@ static struct resclass sk_class = {
  * This function creates a new socket resource. If you want to use it,
  * you need to fill in all the required fields of the structure and
  * call sk_open() to do the actual opening of the socket.
+ *
+ * The real function name is sock_new(), sk_new() is a macro wrapper
+ * to avoid collision with OpenSSL.
  */
 sock *
-sk_new(pool *p)
+sock_new(pool *p)
 {
   sock *s = ralloc(p, &sk_class);
   s->pool = p;