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opencv compilation

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th0th696
Apprentice

Joined: 08 Dec 2004
Posts: 185

Posted: Thu Aug 16, 2018 3:37 pm Post subject: opencv compilation

When compiling opencv on gentoo on arm64 I get:

' fatal error: libpng/png.h: No such file or directory '

it seems I need to

Code:

cd /usr/include;ln -s libpng16 libpng

Am I missing something here?

My question is this the fault of gentoo for not symlinking that directory, or libpng for moving that directory to libpng16 or opencv for looking for it in the wrong place?

In addition the v4l libs seems to require:

Code:

cd /usr/include/linux;ln -s ../libv4l1-videodev.h ./videodev.h

which I adapted from https://www.raspberrypi.org/forums/viewtopic.php?p=560523

original SO question:
https://stackoverflow.com/questions/51878698/compile-opencv-fails-on-libpng-png-h-on-gentoo?noredirect=1#comment90711810_51878698

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