Winsock2.h must be included before anything that includes Winsock.h.

hardware/common/scpi_tcp.c

@@ -17,7 +17,11 @@
  * along with this program.  If not, see <http://www.gnu.org/licenses/>.
  */
 
+#ifdef _WIN32
 #define _WIN32_WINNT 0x0501
+#include <winsock2.h>
+#include <ws2tcpip.h>
+#endif
 
 #include "libsigrok.h"
 #include "libsigrok-internal.h"
@@ -25,10 +29,7 @@
 #include <glib.h>
 #include <string.h>
 #include <unistd.h>
-#ifdef _WIN32
-#include <winsock2.h>
-#include <ws2tcpip.h>
-#else
+#ifndef _WIN32
 #include <sys/socket.h>
 #include <netinet/in.h>
 #include <arpa/inet.h>