From 0be6a31e1d5853e703388b766c34848479e03d74 Mon Sep 17 00:00:00 2001
From: Philip Liard <philip.liard@gmail.com>
Date: Mon, 21 Mar 2011 12:37:51 +0000
Subject: [PATCH] Cpp:Add protobuf version check.

---
 cpp/CMakeLists.txt | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/cpp/CMakeLists.txt b/cpp/CMakeLists.txt
index 51f87e8ff..1e85d4ccb 100644
--- a/cpp/CMakeLists.txt
+++ b/cpp/CMakeLists.txt
@@ -81,6 +81,13 @@ if (PROTOBUF_LIB STREQUAL "PROTOBUF_LIB-NOTFOUND")
     "Can't find Google Protocol Buffers library. Please read README.")
 endif ()
 
+# Check Protocol Buffers version (if pkg-config available)
+find_package (PkgConfig)
+
+if (PKG_CONFIG_EXECUTABLE)
+  pkg_check_modules (PC_PROTOBUF REQUIRED protobuf>=2.4)
+endif (PKG_CONFIG_EXECUTABLE)
+
 # Find ICU
 find_path (ICU_INCLUDE_DIR unicode/unistr.h unicode/normlzr.h)