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    <p>steps to compile and run c++ opencv 2.4.4 on mac os x lion 10.7.5 with cmake 2.8.10 and xcode 4.6.1</p> <p><strong>Having the right tools</strong></p> <ol> <li>download opencv-unix from <a href="http://sourceforge.net/projects/opencvlibrary/files/" rel="nofollow">http://sourceforge.net/projects/opencvlibrary/files/</a> and untar it wherever</li> <li>download cmake .dmg from <a href="http://www.cmake.org/cmake/resources/software.html" rel="nofollow">http://www.cmake.org/cmake/resources/software.html</a> and install it</li> <li>i am assuming you have xcode 4.6 on os x lion which includes the ios sdk 6.1</li> <li>go to xcode preferences to download and install the Command Line Tools so you have g++ etc.</li> </ol> <p><strong>Use cmake to compile opencv</strong></p> <ol> <li>go to the extracted opencv folder</li> <li><p>create a build directory</p> <pre><code>mkdir build cd build cmake -D WITH_TBB=OFF -D BUILD_NEW_PYTHON_SUPPORT=OFF -D BUILD_FAT_JAVA_LIB=OFF -D BUILD_TBB=OFF -D BUILD_EXAMPLES=ON -D CMAKE_CXX_COMPILER=g++ CMAKE_CC_COMPILER=gcc -D CMAKE_OSX_ARCHITECTURES=x86_64 -D BUILD_opencv_java=OFF -G "Unix Makefiles" .. make -j8 sudo make install </code></pre></li> <li><p>from the build folder, go to bin/ and run one of the tests</p> <pre><code>./opencv_test_stitching </code></pre></li> </ol> <p><strong>Create your own c++ opencv xcode project</strong></p> <ol> <li>fire up xcode and create a new xcode project</li> <li>select Command Line Tool for the type of project under os x</li> <li>open your project's build settings</li> <li>under Architectures, set Architecture to 64-bit intel. also set Valid Architectures to x86_64</li> <li>under Build Options, set Compiler for C/C++ to Default Compiler</li> <li>under Search Paths, set Header Search Paths to /usr/local/include</li> <li>also under Search Paths, set Library Search Paths to /usr/local/lib</li> <li>under Apple LLVM compiler 4.2 - Language set C++ Standard Library to libstd++</li> </ol> <p><strong>Add the compiled opencv libraries to your project</strong></p> <ol> <li>go the the Build Phases tab next to Build Settings tab you were in</li> <li>inside Link Binary With Libraries, click on the + sign and choose Add Other</li> <li>hit the front slash / on your keyboard and enter /usr/local/lib</li> <li>hit enter and select the libraries you want to use in your project</li> <li>make sure you always select libopencv_core.2.4.4.dylib</li> <li>hit enter and you will see the selected dylibs under your project</li> </ol> <p><strong>write some code</strong></p> <ol> <li>first lets organize the files, right click on your project blueprint icon and select New Group</li> <li>name the new group opencv or whatever</li> <li>drag the dylibs and drop them in that group</li> <li>open main.cpp</li> <li>copy code from any of the sample tests that came with opencv and paste it here</li> <li><p>make sure all the required dylibs are added, for example, if you copied the opencv_test_stitching.cpp code into main.cpp, you will need to add the following libraries in the previous steps</p> <ul> <li>libopencv_core.2.4.4.dylib</li> <li>libopencv_highgui.2.4.4.dylib</li> <li>libopencv_stitching.2.4.4.dylib</li> </ul></li> </ol> <p>Cheers.</p>
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