Error when using imshow on OS X - c++

Question

I have setup OpenCV2 in XCode but unfortunately imshow does not work:
Undefined symbols for architecture x86_64:
"cv::imshow(std::__1::basic_string<char, std::__1::char_traits<char>, std::__1::allocator<char> > const&, cv::_InputArray const&)", referenced from:
_main in main.o
ld: symbol(s) not found for architecture x86_64
clang: error: linker command failed with exit code 1 (use -v to see invocation)
I am running OS X 10.8.4 with latest XCode.
I have attached a few images below to show the setup in XCode and the libraries.
So far it seems that other functions work fine with OpenCV, except this.

Answer 1

I'm going to go out on a limb and say that you compiled OpenCV2 with libstdc++, and are now compiling your application with libc++ support.
You need to compile OpenCV2 with the same C++ library, otherwise it will not be able to link.
if you do an nm of the OpenCV2 library, if it was compiled with libstdc++, it will look like:
cv::imshow(std::string const&, cv::_InputArray const&)
while if it was compiled with libc++, it would look like:
cv::imshow(std::__1::basic_string<char, std::__1::char_traits<char>, std::__1::allocator<char> > const&, cv::_InputArray const&)
to get the demangled symbol do:
nm library | c++filt | grep cv::imshow