Merge pull request #24 from OpenArena/cross-compile-fix

The engine is now compileable with a MXE environment.

Makefile

@@ -2648,7 +2648,7 @@ $(B)/client/%.o: $(ASMDIR)/%.s
 
 # k8 so inline assembler knows about SSE
 $(B)/client/%.o: $(ASMDIR)/%.c
-	$(DO_CC) -march=k8
+	$(DO_CC) -march=k8 -mmmx -msse2
 
 $(B)/client/%.o: $(CDIR)/%.c
 	$(DO_CC)
@@ -2753,7 +2753,7 @@ $(B)/ded/%.o: $(ASMDIR)/%.s
 
 # k8 so inline assembler knows about SSE
 $(B)/ded/%.o: $(ASMDIR)/%.c
-	$(DO_CC) -march=k8
+	$(DO_CC) -march=k8 -mmmx -msse2
 
 $(B)/ded/%.o: $(SDIR)/%.c
 	$(DO_DED_CC)

Makefile.OpenArena

@@ -20,14 +20,18 @@ VERSION=3.0.0a
 USE_CODEC_VORBIS=1
 USE_CODEC_OPUS=0
 
+ifndef USE_CODEC_XMP
 USE_CODEC_XMP=1
+endif
 
 # FLTO Test
 
 OPTIMIZE += -flto
 
 # Can't use CURL on my system atm
+ifndef USE_CURL
 USE_CURL=0
+endif
 
 # This doesn't work with OpenArena yet
 BUILD_RENDERER_OPENGL2=0