add version to PKG_CONFIG

Author: Frank Neuber

CMakeLists.txt

@@ -3,6 +3,7 @@ cmake_minimum_required(VERSION 2.8)
 project(jsonrpcpp CXX)
 set(PROJECT_DESCRIPTION "C++ JSON-RPC 2.0 library")
 set(PROJECT_URL "https://github.com/badaix/jsonrpcpp")
+set(PROJECT_VERSION "1.0.0")
 
 option(BUILD_SHARED_LIBS "Build jsonrpcpp as a shared library" ON)
 option(BUILD_STATIC_LIBS "Build jsonrpcpp as a static library" ON)

cmake/jsonrpcpp.pc.cmake

@@ -6,6 +6,7 @@ includedir=${prefix}/@CMAKE_INSTALL_INCLUDEDIR@
 Name: @PROJECT_NAME@
 Description: @PROJECT_DESCRIPTION@
 URL: @PROJECT_URL@
+Version: @PROJECT_VERSION@
 
 Libs: -L${libdir} -ljsonrpcpp
 Cflags: -I${includedir}