OpenCV Issue while building an apk using buildozer

[vishal dani]

Hello friends,

I am getting this error when OpenCV recipe is building. Here i am just trying to get opencv version to be printed.

The solution that I have tried are: (I deleted OpenCV folder from the other_build every time before trying a new solution)

• different versions of cmake(3.6.3,3.9.3,latest).
  
• changing version of OpenCV==master in buildozer.spec file and changing the recipe in p4a to not apply patch of 2.4.10 if I use OpenCV==master. (FATAL: In-source builds are not allowed.You should create a separate directory for build files.)
• Different versions of NDK(9c,16b,17c).

I am using master branch of p4a.

I have attached log files, buildozer.spec file, pip freeze information.

Thanks in advance for any kind of help.

[vishal dani]

I found a solution by myself, so posting it here for future reference of others.

This solution worked (sdk=24,ndk=15b,api=27) - with a fork of p4a branch (https://github.com/zworkb/python-for-android):

The repo has changed opencv patch file and so has the cmake error solved.

[Robert Flatt]

This is now fixed https://github.com/kivy/python-for-android/issues/1315 

I have not tried the fix yet.

To get the fix reinstall python-for-android (master)

And thanks to the OP here, whose post above seems to have been instrumental......