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-rw-r--r--gl/m4/sockpfaf.m43
1 files changed, 3 insertions, 0 deletions
diff --git a/gl/m4/sockpfaf.m4 b/gl/m4/sockpfaf.m4
index 8a0c236038..8806705ae2 100644
--- a/gl/m4/sockpfaf.m4
+++ b/gl/m4/sockpfaf.m4
@@ -47,6 +47,9 @@ AC_DEFUN([gl_SOCKET_FAMILIES],
#endif
#ifdef HAVE_WINSOCK2_H
#include <winsock2.h>
+#endif
+#ifdef HAVE_WS2TCPIP_H
+#include <ws2tcpip.h>
#endif]],
[[int x = AF_INET6; struct in6_addr y; struct sockaddr_in6 z;
if (&x && &y && &z) return 0;]])],