autoconf: Checks for some library functions.

diff --git a/pack-objects.c b/pack-objects.c
index bed2497b7974bed96a6ac9478807059cb8de17cb..47da33baa3fb70a6a2f117afbcf4e7e08a5806be 100644 (file)
--- a/pack-objects.c
+++ b/pack-objects.c
@@ -987,6 +987,14 @@ static int try_delta(struct unpacked *trg, struct unpacked *src,
        if (trg_entry->preferred_base)
                return -1;
 
+       /*
+        * We do not bother to try a delta that we discarded
+        * on an earlier try, but only when reusing delta data.
+        */
+       if (!no_reuse_delta && trg_entry->in_pack &&
+           trg_entry->in_pack == src_entry->in_pack)
+               return 0;
+
        /*
         * If the current object is at pack edge, take the depth the
         * objects that depend on the current object into account --