gentoo-overlay/dev-util/bdelta/files/bdelta-0.2.3-bdelta.h-make-header-C-compatible.patch

From eb4e8e74a27000c6965c5921f69823046e7fe2b6 Mon Sep 17 00:00:00 2001
From: Sergei Trofimovich <slyfox@gentoo.org>
Date: Wed, 7 Dec 2011 20:53:20 +0300
Subject: [PATCH 1/4] bdelta.h: make header C compatible

Exportaged names follow C calling. It's easier to
to pull library in in other languages.

Before patch:
    $ nm libbdelta.so_ | grep bdelta_
    0000000000002a00 T _Z11bdelta_passPvj
    00000000000022c0 T _Z15bdelta_done_algPv
    00000000000022b0 T _Z15bdelta_getErrorPv
    0000000000002220 T _Z15bdelta_getMatchPvjPjS0_S0_
    0000000000002190 T _Z15bdelta_init_algjjPFPvS_S_jjES_S_j

After patch:
    $ nm libbdelta.so | grep bdelta_
    00000000000022e0 T bdelta_done_alg
    00000000000022d0 T bdelta_getError
    0000000000002240 T bdelta_getMatch
    00000000000021b0 T bdelta_init_alg
    0000000000002a20 T bdelta_pass

Converted global constants to enum.

Signed-off-by: Sergei Trofimovich <slyfox@gentoo.org>
---
 trunk/src/bdelta.h |   13 +++++++++++--
 1 files changed, 11 insertions(+), 2 deletions(-)

diff --git a/trunk/src/bdelta.h b/trunk/src/bdelta.h
index 4a7ea40..03b102b 100644
--- a/trunk/src/bdelta.h
+++ b/trunk/src/bdelta.h
@@ -13,6 +13,10 @@
  * Author: John Whitney <jjw@deltup.org>
  */
 
+#ifdef __cplusplus
+extern "C" {
+#endif // __cplusplus
+
 // Callback function must return a pointer to the data requested.
 // A "fill and forget" buffer is provided, but can be ignored, so
 // long as the data persists throughout the life of bdelta_pass().
@@ -31,7 +35,12 @@ void bdelta_getMatch(void *instance, unsigned matchNum,
 
 int bdelta_getError(void *instance);
 
-const int
+enum BDELTA_RESULT {
 	BDELTA_OK         =  0,
 	BDELTA_MEM_ERROR  = -1,
-	BDELTA_READ_ERROR = -2;
+	BDELTA_READ_ERROR = -2
+};
+
+#ifdef __cplusplus
+}
+#endif // __cplusplus
-- 
1.7.8