X-Git-Url: https://mattmccutchen.net/rsync/rsync.git/blobdiff_plain/1e19f7ba5fbe801ab2dcc2c48f3b34834542ea84..6d19c6742c58313d4c37fee3478dff03665bc6b0:/rsync.h

diff --git a/rsync.h b/rsync.h
index fb7f333a..449ce094 100644
--- a/rsync.h
+++ b/rsync.h
@@ -461,6 +461,9 @@ extern int errno;
 #define SUPPORT_LINKS HAVE_READLINK
 #define SUPPORT_HARD_LINKS HAVE_LINK
 
+/* This could be bad on systems which have no lchown and where chown
+ * follows symbollic links.  On such systems it might be better not to
+ * try to chown symlinks at all. */
 #ifndef HAVE_LCHOWN
 #define lchown chown
 #endif
@@ -606,3 +609,9 @@ inet_ntop(int af, const void *src, char *dst, size_t size);
 #ifndef HAVE_INET_PTON
 int isc_net_pton(int af, const char *src, void *dst);
 #endif
+
+#ifdef __GNUC__
+#  define UNUSED(x) x __attribute__((__unused__))
+#else
+#  define UNUSED(x) x
+#endif /* ndef __GNUC__ */