CMake: Set version and soversion

CMakeLists.txt

@@ -3,6 +3,11 @@ cmake_minimum_required(VERSION 2.8)
 set(PROJ_CJSON cJSON)
 
 project(${PROJ_CJSON} C)
+set(CJSON_VERSION_MAJOR 1)
+set(CJSON_VERSION_MINOR 0)
+set(CJSON_VERSION_PATCH 0)
+set(CJSON_VERSION_SO 1)
+set(CJSON_VERSION "${CJSON_VERSION_MAJOR}.${CJSON_VERSION_MINOR}.${CJSON_VERSION_PATCH}")
 
 file(GLOB HEADERS cJSON.h)
 set(SOURCES cJSON.c)