some horrible preprocessing tricks to automatically update the tag

benjaminp · benjaminp · commit 48deae12d511 · 2011-06-03T17:50:16.000-05:00
diff --git a/Python/import.c b/Python/import.c
@@ -110,16 +110,24 @@ typedef unsigned short mode_t;
    TAG and PYC_TAG_UNICODE must change for each major Python release. The magic
    number will take care of any bytecode changes that occur during development.
 */
+#define QUOTE(arg) #arg
+#define STRIFY(name) QUOTE(name)
+#define MAJOR STRIFY(PY_MAJOR_VERSION)
+#define MINOR STRIFY(PY_MINOR_VERSION)
 #define MAGIC (3180 | ((long)'\r'<<16) | ((long)'\n'<<24))
-#define TAG "cpython-32"
+#define TAG "cpython-" MAJOR MINOR;
 #define CACHEDIR "__pycache__"
 static const Py_UNICODE CACHEDIR_UNICODE[] = {
     '_', '_', 'p', 'y', 'c', 'a', 'c', 'h', 'e', '_', '_', '\0'};
 /* Current magic word and string tag as globals. */
 static long pyc_magic = MAGIC;
 static const char *pyc_tag = TAG;
 static const Py_UNICODE PYC_TAG_UNICODE[] = {
-    'c', 'p', 'y', 't', 'h', 'o', 'n', '-', '3', '2', '\0'};
+    'c', 'p', 'y', 't', 'h', 'o', 'n', '-', PY_MAJOR_VERSION + 48, PY_MINOR_VERSION + 48, '\0'};
+#undef QUOTE
+#undef STRIFY
+#undef MAJOR
+#undef MINOR
 
 /* See _PyImport_FixupExtensionObject() below */
 static PyObject *extensions = NULL;
