Add a "fork" of musl as //fusl.

fusl/arch/powerpc/bits/socket.h

+struct msghdr
+{
+        void *msg_name;
+        socklen_t msg_namelen;
+        struct iovec *msg_iov;
+        int msg_iovlen;
+        void *msg_control;
+        socklen_t msg_controllen;
+        int msg_flags;
+};
+
+struct cmsghdr
+{
+        socklen_t cmsg_len;
+        int cmsg_level;
+        int cmsg_type;
+};
+
+#define SO_DEBUG        1
+#define SO_REUSEADDR    2
+#define SO_TYPE         3
+#define SO_ERROR        4
+#define SO_DONTROUTE    5
+#define SO_BROADCAST    6
+#define SO_SNDBUF       7
+#define SO_RCVBUF       8
+#define SO_KEEPALIVE    9
+#define SO_OOBINLINE    10
+#define SO_NO_CHECK     11
+#define SO_PRIORITY     12
+#define SO_LINGER       13
+#define SO_BSDCOMPAT    14
+#define SO_REUSEPORT    15
+#define SO_RCVLOWAT     16
+#define SO_SNDLOWAT     17
+#define SO_RCVTIMEO     18
+#define SO_SNDTIMEO     19
+#define SO_PASSCRED     20
+#define SO_PEERCRED     21
+#define SO_ACCEPTCONN   30
+#define SO_SNDBUFFORCE  32
+#define SO_RCVBUFFORCE  33
+#define SO_PROTOCOL     38
+#define SO_DOMAIN       39