Define __unix__ for OS/X

src/odoors/GNUmakefile

@@ -57,6 +57,7 @@ LD	:=	gcc
 #
 CFLAGS	+=	-O2 -g -L. -I../xpdev
 ifeq ($(OS),Darwin)
+ CFLAGS		+=	-D__unix__
  LDFLAGS	+=	$(CFLAGS) -dynamiclib -single_module
 else
  LDFLAGS	+=	$(CFLAGS) -shared
@@ -177,7 +178,7 @@ ex_ski: ex_ski.c ${LIBDIR}libODoors${SHLIB}
 	$(CC) $(CFLAGS) ex_ski.c -o ex_ski -lODoors
 
 ex_vote: ex_vote.c ${LIBDIR}libODoors${SHLIB}
-	$(CC) $(CFLAGS) ex_vote.c -o ex_vote ../xpdev/filewrap.c -lODoors -DMULTINODE_AWARE
+	$(CC) $(CFLAGS) ex_vote.c ../xpdev/filewrap.c -o ex_vote -lODoors -DMULTINODE_AWARE
 
 #
 #------------------------------------------------------------------------------