openbsd bits for Makefile and q_platform

Makefile

@@ -438,7 +438,7 @@ ifeq ($(PLATFORM),openbsd)
 
   BASE_CFLAGS += -Wall -fno-strict-aliasing -Wimplicit -Wstrict-prototypes \
                 -I/usr/X11R6/include -I/usr/local/include \
-                -I/usr/local/include/SDL -fvisibility=hidden
+                -fvisibility=hidden
 
   DEBUG_CFLAGS=$(BASE_CFLAGS) -g
 
@@ -460,9 +460,16 @@ ifeq ($(PLATFORM),openbsd)
 
   THREAD_LDFLAGS=-lpthread
   # don't need -ldl (FreeBSD)
-  LDFLAGS=-lm -lSDL -lGL -lX11 -L/usr/local/lib -L/usr/X11R6/lib -lX11 -lXext
+  LDFLAGS=-lm
 
-  CLIENT_LDFLAGS =-lm -lSDL -lGL -lX11 -L/usr/local/lib -L/usr/X11R6/lib -lX11 -lXext
+  ifeq ($(USE_SDL),1)
+    BASE_CFLAGS += -I/usr/local/include/SDL2
+    CLIENT_LDFLAGS = -L/usr/X11R6/lib -L/usr/local/lib -lSDL2
+  else
+    CLIENT_LDFLAGS = -L/usr/X11R6/lib -L/usr/lib -lX11
+  endif
+
+  CLIENT_LDFLAGS += -lm -lGL -L/usr/local/lib
 
   ifeq ($(USE_CODEC_VORBIS),1)
     CLIENT_LDFLAGS += -lvorbisfile -lvorbis -logg

code/qcommon/q_platform.h

@@ -167,6 +167,45 @@ Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
 
 #endif
 
+//================================================================ OpenBSD ===
+
+// This is very much like the FreeBSD one and can probably be merged
+#ifdef __OpenBSD__
+
+#include <sys/types.h>
+#include <sys/types.h>
+#include <machine/endian.h>
+
+#define OS_STRING "openbsd"
+#define ID_INLINE inline
+#define PATH_SEP '/'
+#define PATH_SEP_FOREIGN '\\'
+
+#ifdef __i386__
+#define ARCH_STRING "i386"
+// OpenBSD has alot of platforms
+#define Q3_LITTLE_ENDIAN
+#undef id386
+#define id386 1
+#endif
+
+#ifdef __amd64__
+#define ARCH_STRING "x86_64"
+#define Q3_LITTLE_ENDIAN
+#undef idx64
+#define idx64 1
+#endif
+
+#if BYTE_ORDER == BIG_ENDIAN
+#define Q3_BIG_ENDIAN
+#else
+#define Q3_LITTLE_ENDIAN
+#endif
+
+#define DLL_EXT ".so"
+
+#endif
+
 //================================================================== Q3VM ===
 
 #ifdef Q3_VM