hack for fake_server on MacOS X, tidy Makefile.fake

examples/Makefile.fake

@@ -3,8 +3,16 @@
 # For compiling on PC
 
 
-.PHONY: all
+.PHONY: all clean
 all: fake_server
 
+CPPFLAGS+=-DFAKE -DDISABLE_SANITY_CHECKS
+CFLAGS+=-DFAKE -DDISABLE_SANITY_CHECKS
+CFLAGS+=-Wall
+LDLIBS=-lpthread
+
 fake_server: http_server.c fakecapture.h fakecapture.c camera.h camera.c
-	$(CC) -o $@ -DFAKE -DDISABLE_SANITY_CHECKS $^ -lpthread
+	$(CC) -o $@ $(CPPFLAGS) $(CFLAGS) $(LDFLAGS) http_server.c fakecapture.c camera.c $(LDLIBS)
+
+clean:
+	-rm fake_server

examples/fakecapture.c

@@ -9,10 +9,14 @@
 static int frame_nr = START_FRAME;
 
 #ifdef __MACH__
+#define UNUSED_VALUE 1
+#define CLOCK_MONOTONIC UNUSED_VALUE
 int clock_gettime(int clk_id, struct timespec* t) {
     struct timeval now;
-    if(gettimeofday(&now, NULL));
-        return rv;
+    int res;
+    if((res=gettimeofday(&now, NULL))){
+        return res;
+    }
     t->tv_sec  = now.tv_sec;
     t->tv_nsec = now.tv_usec * 1000;
     return 0;