On 15.01.2021 09:13, wilhelm-eger--- via Cygwin wrote:
Gesendet: Donnerstag, 14. Januar 2021 um 23:52 Uhr

Please try by downloading the complete Cygwin source package, and try a vanilla
rebuild first with zero changes, then change only the .cygport VERSION= to the
latest, rebuild, and fix any problems with that as you go.

I have done the following

mkdir opencv
cd opencv
git clone http://cygwin.com/git/cygwin-packages/opencv.git .
cygport opencv.cygport fetch
cygport opencv.cygport all

Same error.


I see this as first error

/pub/devel/opencv/opencv-3.4.1-3.x86_64/src/opencv-3.4.1/modules/python/src2/cv2.cpp:889:34: error: invalid conversion from ‘const char*’ to ‘char*’ [-fpermissive]
it seems the compilers is less tolerant than before.
It does not seem a specific python issue.

I will see to patch it and continue when I found a bit of time


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