Undefined symbols for architecture arm64

[neutrum]

Hey, I am having trouble building your app I am using following setup: Xcode Version 9.0 beta 6 (9M214v) opencv 3.2.0 (I reimported it as suggested)

but i am still getting this error:

Undefined symbols for architecture arm64: "cv::String::deallocate()", referenced from: cv::String::~String() in PlaneDetector.o cv::String::operator=(cv::String const&) in PlaneDetector.o "_cvGEMM", referenced from: cvFitPlane(CvMat const*, float*) in PlaneDetector.o "_cvSVD", referenced from: cvFitPlane(CvMat const*, float*) in PlaneDetector.o "_cvSet", referenced from: cvFitPlane(CvMat const*, float*) in PlaneDetector.o "_cvReleaseMat", referenced from: cvFitPlane(CvMat const*, float*) in PlaneDetector.o "_cvCreateMat", referenced from: +[PlaneDetector detectPlaneWithPoints:] in PlaneDetector.o cvFitPlane(CvMat const*, float*) in PlaneDetector.o ld: symbol(s) not found for architecture arm64 clang: error: linker command failed with exit code 1 (use -v to see invocation)

As I understand it this is symbols are referenced from the opencv library which does have arm64 references.

So where could be the problem ?

[CocoaBob]

Does your folder look like this?

[neutrum]

@CocoaBob No it does not but I see your point now it cannot find the real .a library How should I fix it seem that the iOS pack from the opencv website is not enough.

[CocoaBob]

@neutrum I don't know how you imported OpenCV, actually we only need to download the version 3.2 from here and simply copy the binary file opencv2 (140.8MB) to the ARuler project folder.

[neutrum]

@CocoaBob Ok so just copying the opencv2.framework to project wasn't enough I had to manually add it in Build Phases > Link Binary with Libraries and now it works thanks

[CocoaBob]

@neutrum Strange, it was already there when we clone/download the project.

[mhanlon]

If you update to the latest you can get opencv installed with Cocoapods...

[GhostFlying]

@mhanlon But I clone the latest one and run pod install to install the opcnv2 but it can not find the opencv2/swiching.hpp

[mhanlon]

@GhostFlying, once you run pod install you need to use the ARuler.xcworkspace (not ARuler.xcodeproj) to build and run the project... That should fix the error you're seeing.