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fix: drop Python 2.7 on Windows using 2008 compiler

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Henry Schreiner
2021-04-25 00:55:16 -04:00
committed by Henry Schreiner
parent f27943608b
commit 22d473acc0
12 changed files with 21 additions and 57 deletions
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docs/cpp_standards.md
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@@ -30,9 +30,9 @@ For more details see https://en.cppreference.com/w/cpp/compiler_support, https:/
## Windows and Python 2.7
Visual C++ for Python 2.7 does not support modern C++ standards (i.e., C++11 and later). When building on Appveyor, you will need to either use the "Visual Studio 2017" or "Visual Studio 2019" image, but Python 2.7 is not supported on these images - skip it by setting `CIBW_SKIP=cp27-win*`.
Visual C++ for Python 2.7 does not support modern C++ standards (i.e., C++11 and later), and Microsoft has removed the download for the required Visual Studio 2008 needed to build a native extension in April, 2021.
There is an optional workaround for this, though: the pybind11 project argues and shows that it is [possible to compile Python 2.7 extension with a newer compiler](https://pybind11.readthedocs.io/en/stable/faq.html#working-with-ancient-visual-studio-2008-builds-on-windows) and has an example project showing how to do this: https://github.com/pybind/python_example. The main catch is that a user might need to install [a newer "Microsoft Visual C++ Redistributable"](https://support.microsoft.com/en-us/help/2977003/the-latest-supported-visual-c-downloads), since the newer C++ standard library's binaries are not included by default with the Python 2.7 installation.
There is an optional workaround, though: the pybind11 project argues and shows that it is [possible to compile Python 2.7 extension with a newer compiler](https://pybind11.readthedocs.io/en/stable/faq.html#working-with-ancient-visual-studio-2008-builds-on-windows) and has an example project showing how to do this: https://github.com/pybind/python_example. The main catch is that a user might need to install [a newer "Microsoft Visual C++ Redistributable"](https://support.microsoft.com/en-us/help/2977003/the-latest-supported-visual-c-downloads), since the newer C++ standard library's binaries are not included by default with the Python 2.7 installation.
Forcing `distutils` or `setuptools` to use a more recent version of MSVC that supports modern C++ can be done in the following way: