+diff -Naur ccache-3.0pre0.org/ccache.c ccache-3.0pre0/ccache.c
+--- ccache-3.0pre0.org/ccache.c 2010-02-28 21:14:39.000000000 +0100
++++ ccache-3.0pre0/ccache.c 2010-03-22 08:08:43.000000000 +0100
+@@ -849,12 +849,14 @@
+
+ compilercheck = getenv("CCACHE_COMPILERCHECK");
+ if (!compilercheck) {
+- compilercheck = "mtime";
++ compilercheck = "size";
+ }
+ if (strcmp(compilercheck, "none") == 0) {
+ /* Do nothing. */
+ } else if (strcmp(compilercheck, "content") == 0) {
+ hash_file(&hash, args->argv[0]);
++ } else if (strcmp(compilercheck, "size") == 0){
++ hash_int(&hash, st.st_size);
+ } else { /* mtime */
+ hash_int(&hash, st.st_size);
+ hash_int(&hash, st.st_mtime);