This avoids warnings.
---
 libavformat/network.h    |    2 ++
 libavformat/os_support.c |    2 +-
 2 files changed, 3 insertions(+), 1 deletion(-)

diff --git a/libavformat/network.h b/libavformat/network.h
index 000a6fc..8399426 100644
--- a/libavformat/network.h
+++ b/libavformat/network.h
@@ -35,6 +35,8 @@
 #define ETIMEDOUT       WSAETIMEDOUT
 #define ECONNREFUSED    WSAECONNREFUSED
 #define EINPROGRESS     WSAEINPROGRESS
+#define getsockopt(a, b, c, d, e) getsockopt(a, b, c, (char*) d, e)
+#define setsockopt(a, b, c, d, e) setsockopt(a, b, c, (const char*) d, e)
 
 int ff_neterrno(void);
 #else
diff --git a/libavformat/os_support.c b/libavformat/os_support.c
index 889a005..a71573d 100644
--- a/libavformat/os_support.c
+++ b/libavformat/os_support.c
@@ -252,7 +252,7 @@ const char *ff_gai_strerror(int ecode)
 int ff_socket_nonblock(int socket, int enable)
 {
 #if HAVE_WINSOCK2_H
-   return ioctlsocket(socket, FIONBIO, &enable);
+   return ioctlsocket(socket, FIONBIO, (u_long*) &enable);
 #else
    if (enable)
       return fcntl(socket, F_SETFL, fcntl(socket, F_GETFL) | O_NONBLOCK);
-- 
1.7.9.4

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