core: Add CAV_PASSES define

Signed-off-by: Ian Moffett <ian@mirocom.org>

src/main.c

@@ -7,6 +7,7 @@
 #include <fcntl.h>
 #include <string.h>
 
+#define CAV_PASSES 3
 #define CAV_VERSION "0.0.1"
 
 static const char *input_name = NULL;
@@ -199,7 +200,7 @@ main(int argc, char **argv)
      * pass 1): Construct an offset table using what we know
      * pass 2): Construct the archive segments
      */
-    for (int i = 0; i < 2; ++i) {
+    for (int i = 0; i < CAV_PASSES; ++i) {
         consume_pass(&state);
     }