FreeBSD build fix proposal.

lib/irrlicht/source/Irrlicht/COctreeSceneNode.cpp

@@ -88,7 +88,7 @@ void COctreeSceneNode::render()
 {
 	video::IVideoDriver* driver = SceneManager->getVideoDriver();
 
-	if (VertexType == -1 || !driver)
+	if (VertexType == (video::E_VERTEX_TYPE)-1 || !driver)
 		return;
 
 	ICameraSceneNode* camera = SceneManager->getActiveCamera();

lib/mcpp/system.c

@@ -36,6 +36,7 @@
  *      1. specify the constants in "configed.H" or "noconfig.H",
  *      2. append the system-dependent routines in this file.
  */
+#define _POSIX_C_SOURCE 200809L
 #if PREPROCESSED
 #include    "mcpp.H"
 #else

src/network/socket_address.hpp

@@ -29,6 +29,7 @@
 #else
 #  include <netdb.h>
 #  include <netinet/in.h>
+#  include <sys/socket.h>
 #endif
 
 #include <array>

src/network/stk_ipv6.cpp

@@ -42,6 +42,7 @@ extern "C"
 #include <err.h>
 #include <netdb.h>
 #include <sys/socket.h>
+#include <sys/types.h>
 #include <stdlib.h>
 #endif