"Undefined symbols for architecture armv7" when importing STATIC LIBRARY that contains OPENCV functions

xcode opencv architecture static-libraries armv7

There were two issues related to linking libraries:

Firstly, although my subproject had the opencv2.frameworkcorrectly added and linked to it, I also had to add the frameworkto my main project. This way I got rid of the cv::* linkingproblems;
The second issue was related to my cross-compiling Objective-C++ configuration. Since I was using libc++ as my Standard Library, I had to add -lc++ to my Other Linker Flags. In case you are using libstdc++ as your Standard Library, you should add -lstdc++ instead.

After those changes, it all worked perfectly!Good luck!

xcode opencv architecture static-libraries armv7

I think its because ur project is not linking to the C++ runtime .

Try adding libc++.dylib to ur linked Libraries.

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