Recommended way to update instillation

[iaburton]

Description

Trying to update between releases constantly breaks CGO/OpenCV.

Your Environment

• Operating System and version: Ubuntu 16 LTS / Debian Stretch Pi2
• OpenCV version used: Which ever version was available upon release of v11/12 of this library
• How did you install OpenCV? Using the script in this repo
• GoCV version used: v11/v12
• Go version: go1.10.3
• Did you run the env.sh or env.cmd script before trying to go run or go build? That used to be the recommended way, but not anymore apparently?

Anyways, I've been using this library well before v11 and everytime I want to update, I update via the normal "go get -u -d" method. However, this never works completely because so much CGO changes that it doesn't seem to match the OpenCV I had installed from the previous release. Usually to fix it I have to uninstall everything or just try rerunning the install script. This isn't too bad on my i7 dev machine but it hurts on my Pi2 and Zero.

This was the output of my latest attempt to update to v14

# gocv.io/x/gocv core.cpp: In function ‘void Mat_Size(Mat, IntVector*)’: core.cpp:141:27: error: ‘struct cv::MatSize’ has no member named ‘dims’ int* ids = new int[ms.dims()]; ^ core.cpp:143:31: error: ‘struct cv::MatSize’ has no member named ‘dims’ for (size_t i = 0; i < ms.dims(); ++i) { ^ core.cpp:147:22: error: ‘struct cv::MatSize’ has no member named ‘dims’ res->length = ms.dims();

Is there a recommended or easier way to update both gocv and OpenCV release to release? Thanks.

[iaburton]

To confirm, right after creating this issue I went ahead and redid the entire install on my i7 machine (takes about 4 minutes) and that resolved the errors I pasted above. Again, this is something I deal with from time to time when updating (though the errors are always different), I'm just hoping there is a better way next time :)