Linking libraries OpenCV 2.4.2 on xcode 4.5.1

Question

I have installed opencv with macports following the directions here: Compile OpenCV (2.3.1+) for OS X Lion / Mountain Lion with Xcode

I have also search and tried every

Answer 1

I had the same problem. A build setting default seems to be different in Xcode 4.5.

Under "Build Settings"--> Apple LLVM compiler 4.1 - Language >

C++ Standard Library:= Change from libc++ (LLVM ...) to libstdc++ (GNU C++ ...).

Answer 2

It's very likely that OpenCV has not been compiled with C++11 settings, while the program is. Set the build of your tool without C++11 switches (i.e. -std=c++11 -stdlib=libc++).

Answer 3

Try to manually add the directory where port puts all the dylibs (/opt/local/lib if I'm not getting wrong) in Build Settings->Library search path. This should fix the linking problem.