Static linking into swig wrapper

Question

I have a working swig wrapper for C++ library(mylib.so). And now I want to link mylib.so to the wrapper library(mylib_wrapper.so) statically. Currently I build my wrapper with cmake.

1. Should a wrapped library be a static library(not a dynamic) if I want have a static linking in my swig wrapper?
2. What modifications I should do in my interface/cmake files?

Currently I have following cmake file:

cmake_minimum_required(VERSION 2.8)

find_package(SWIG REQUIRED)
include(${SWIG_USE_FILE})
find_package(Ruby)
include_directories(${RUBY_INCLUDE_PATH} ${CMAKE_CURRENT_SOURCE_DIR})

set(CMAKE_SWIG_FLAGS "")
set(MODULE_NAME ruby_module)
set(CMAKE_SWIG_OUTDIR ${CMAKE_LIBRARY_OUTPUT_DIRECTORY})

set_source_files_properties(${MODULE_NAME}.i PROPERTIES CPLUSPLUS ON)

swig_add_module(${MODULE_NAME} ruby ${MODULE_NAME}.i ruby_wrapper.cpp)
swig_link_libraries(${MODULE_NAME} ${MAIN_LIBRARY_NAME})
swig_link_libraries(${MODULE_NAME} ${RUBY_LIBRARIES})

And .i file:

%module ruby_module

%{
#include "ruby_wrapper.h"
%}

%import std_string.i

%include "ruby_module.h"

And headers file: ruby_module.h and ruby_wrapper.h are have the same content.

#include <string>

class MyClass
{
public:
  MyClass();
  ~MyClass();

public:
  std::string myfunc(const std::string& path);
};

In the ruby_wrapper.cpp file is overwrited functions of mylib.so .