Pillow/winbuild/README.md

Quick README

For more extensive info, see the windows build instructions docs/build.rst.

• See https://github.com/python-pillow/Pillow/issues/553#issuecomment-37877416 and https://github.com/matplotlib/matplotlib/issues/1717#issuecomment-13343859

• Works best with Python 3.4, due to virtualenv and pip batteries included. Python3+ required for fetch command.

• Check config.py for virtual env paths, suffix for 64 bit releases. Defaults to x64, set X64_EXT to change.

• When running in CI with one Python per invocation, set the PYTHON env variable to the Python folder. (e.g. PYTHON=c:\Python27\) This overrides the matrix in config.py and will just build and test for the specific Python.

• python get_pythons.py downloads all the Python releases, and their signatures. (Manually) Install in c:\PythonXX[x64]\.

• python build_dep.py downloads and creates a build script for all the dependencies, in 32 and 64 bit versions, and with both compiler versions.

• (in powershell) build_deps.cmd invokes the dependency build.

• python build.py --clean makes Pillow for the matrix of Pythons.

• python test.py runs the tests on Pillow in all the virtual envs.

• Currently working with zlib, libjpeg, freetype, and libtiff on Python 2.7, 3.3, and 3.4, both 32 and 64 bit, on a local win7 pro machine and appveyor.com (3.3 untested there)

• Webp is built, not detected.

• LCMS and OpenJpeg are not building.