This page describes how to build python Pillow package from source.
https://github.com/python-pillow/Pillow
There are two at least two ways to build Pillow and its dependencies for Windows on Arm
Visual Studio 2019 or later
You will need to either clone the Pillow repository or download the source distribution from PyPI for the version you need.
And run the following commands to build and install all of the dependencies
python winbuild\build_prepare.py winbuild\build\build_dep_all.cmd winbuild\build\build_pillow.cmd install |
Visual Studio 2019 or later
Vcpkg Installation
Install main dependencies using vcpkg
vcpkg install zlib libwebp lcms freetype libjpeg-turbo libpng tiff --triplet=arm64-windows
Pillow supports other image formats too. You need to install the appropriate library and add it to your PATH for pillow to include them.
This has to be done for all installed libraries.
E.g: to add freetype to env. from powershell
$env:INCLUDE+=";C:\vcpkg\packages\freetype_arm64-windows\include" $env:LIB+=";C:\vcpkg\packages\freetype_arm64-windows\lib" |
pip install pillow --no-build-isolation
If you try to run pillow you might get a DLL import error as Python cannot load thrid party library DLLs we installed using vcpkg. We will have to manually copy all of the DLLs to pillow installation directory.
E.g:
cp C:\vcpkg\packages\zlib_arm64-windows\bin\*.dll C:\venv_pillow\lib\site-packages\PIL\