imagecodecs openjpeg.h: No such file or directory

[gerrito333]

When I run pip3 install face-alignment I get the following error:

imagecodecs/_jpeg2k.c:602:10: fatal error: openjpeg.h: No such file or directory
 #include "openjpeg.h"
          ^~~~~~~~~~~~
compilation terminated.
error: command 'x86_64-linux-gnu-gcc' failed with exit status 1
----------------------------------------
Failed building wheel for imagecodecs

[1adrianb]

If you are on ubuntu try running sudo apt-get install -y libopenjpeg-dev beforehand.

[gerrito333]

Thanks for your prompt reply. Tried, but I am unable to find this package:

apt-get install -y libopenjpeg-dev
E: Unable to locate package libopenjpeg-dev

[1adrianb]

Try installing then libopenjp2-7-dev please

[gerrito333]

With libopenjp2-7-dev installed, I still get this message:

imagecodecs/_jpeg2k.c:602:10: fatal error: openjpeg.h: No such file or directory
 #include "openjpeg.h"
          ^~~~~~~~~~~~
compilation terminated.
error: command 'x86_64-linux-gnu-gcc' failed with exit status 1

I am using a ubuntu18.04 docker image, I will try if switching to ubuntu16.04 helps.

[1adrianb]

That shouldn't be a problem to be honest. Try to see if you can locate where the header is and manually add if its necessary. For an example see python-pillow/Pillow#2387 (comment)

[gerrito333]

Using a ubuntu16.04 with libopenjpeg-dev and other libs mentioned on https://pypi.org/project/imagecodecs/ solved it. Thanks Adrian for you support.