Added so version if shared object only build.

Fixed MSGPACK_INSTALLTARGETS list manipulation.

Author: redboltz

CMakeLists.txt

@@ -192,6 +192,8 @@ IF (BUILD_SHARED_LIBS OR MSGPACK_ENABLE_SHARED)
         ${msgpackc_HEADERS}
     )
 
+    SET_TARGET_PROPERTIES (msgpackc PROPERTIES SOVERSION 2 VERSION 2.0.0)
+
     TARGET_INCLUDE_DIRECTORIES (msgpackc
         PUBLIC
             $<BUILD_INTERFACE:${CMAKE_CURRENT_SOURCE_DIR}/include>
@@ -230,7 +232,6 @@ IF (MSGPACK_ENABLE_STATIC)
         ELSEIF (MINGW)
             SET_TARGET_PROPERTIES (msgpackc PROPERTIES IMPORT_SUFFIX ".dll.a")
         ENDIF ()
-        SET_TARGET_PROPERTIES (msgpackc PROPERTIES SOVERSION 2 VERSION 2.0.0)
     ENDIF ()
 ENDIF ()
 
@@ -307,7 +308,7 @@ IF (BUILD_SHARED_LIBS OR MSGPACK_ENABLE_SHARED)
 ENDIF ()
 
 IF (MSGPACK_ENABLE_STATIC)
-    SET (MSGPACK_INSTALLTARGETS msgpackc-static)
+    LIST (APPEND MSGPACK_INSTALLTARGETS msgpackc-static)
 ENDIF ()
 
 INSTALL (TARGETS ${MSGPACK_INSTALLTARGETS} EXPORT msgpack-targets