autoconf: Checks for libraries

diff --git a/read-cache.c b/read-cache.c
index c499c5185678b6b4ac35d57d1ab0b36cc2ff056b..3c32aae7e8ae63bccad83a603f2b86c66965cd26 100644 (file)
--- a/read-cache.c
+++ b/read-cache.c
@@ -706,7 +706,7 @@ static int verify_hdr(struct cache_header *hdr, unsigned long size)
        SHA1_Init(&c);
        SHA1_Update(&c, hdr, size - 20);
        SHA1_Final(sha1, &c);
-       if (memcmp(sha1, (void *)hdr + size - 20, 20))
+       if (memcmp(sha1, (char *) hdr + size - 20, 20))
                return error("bad index file sha1 signature");
        return 0;
 }
@@ -770,7 +770,7 @@ int read_cache(void)
 
        offset = sizeof(*hdr);
        for (i = 0; i < active_nr; i++) {
-               struct cache_entry *ce = map + offset;
+               struct cache_entry *ce = (struct cache_entry *) ((char *) map + offset);
                offset = offset + ce_size(ce);
                active_cache[i] = ce;
        }
@@ -783,10 +783,11 @@ int read_cache(void)
                 * in 4-byte network byte order.
                 */
                unsigned long extsize;
-               memcpy(&extsize, map + offset + 4, 4);
+               memcpy(&extsize, (char *) map + offset + 4, 4);
                extsize = ntohl(extsize);
-               if (read_index_extension(map + offset,
-                                        map + offset + 8, extsize) < 0)
+               if (read_index_extension(((const char *) map) + offset,
+                                        (char *) map + offset + 8,
+                                        extsize) < 0)
                        goto unmap;
                offset += 8;
                offset += extsize;
@@ -820,7 +821,7 @@ static int ce_write(SHA_CTX *context, int fd, void *data, unsigned int len)
                }
                write_buffer_len = buffered;
                len -= partial;
-               data += partial;
+               data = (char *) data + partial;
        }
        return 0;
 }