Generate the proper .so version

CMakeLists.txt

@@ -1,6 +1,11 @@
 cmake_minimum_required(VERSION 2.8.1)
 project(cppkafka)
 
+# Set the version number.
+set(CPPKAFKA_VERSION_MAJOR 0)
+set(CPPKAFKA_VERSION_MINOR 1)
+set(CPPKAFKA_VERSION "${CPPKAFKA_VERSION_MAJOR}.${CPPKAFKA_VERSION_MINOR}")
+
 set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -std=c++11 -Wall")
 set(CMAKE_MODULE_PATH ${CMAKE_MODULE_PATH} "${CMAKE_CURRENT_SOURCE_DIR}/cmake/")
 

src/CMakeLists.txt

@@ -18,6 +18,8 @@ set(SOURCES
 )
 
 add_library(cppkafka ${CPPKAFKA_LIBRARY_TYPE} ${SOURCES})
+set_target_properties(cppkafka PROPERTIES VERSION ${CPPKAFKA_VERSION}
+                                          SOVERSION ${CPPKAFKA_VERSION})
 target_link_libraries(cppkafka ${RDKAFKA_LIBRARY})
 
 install(