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gh-108051: Update versions found by find_python.bat and clarify readme (GH-116118)

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Steve Dower 2024-02-29 21:24:05 +00:00 committed by GitHub
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2 changed files with 18 additions and 7 deletions
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7
PCbuild/find_python.bat
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@ -29,6 +29,9 @@
:begin_search
@set PYTHON=
@rem If PYTHON_FOR_BUILD is set, use that
@if NOT "%PYTHON_FOR_BUILD%"=="" @(set PYTHON="%PYTHON_FOR_BUILD%") && (set _Py_Python_Source=found as PYTHON_FOR_BUILD) && goto :found
@rem If there is an active virtual env, use that one
@if NOT "%VIRTUAL_ENV%"=="" (set PYTHON="%VIRTUAL_ENV%\Scripts\python.exe") & (set _Py_Python_Source=found in virtual env) & goto :found
@ -42,7 +45,9 @@
@if NOT "%HOST_PYTHON%"=="" @%HOST_PYTHON% -Ec "import sys; assert sys.version_info[:2] >= (3, 9)" >nul 2>nul && (set PYTHON="%HOST_PYTHON%") && (set _Py_Python_Source=found as HOST_PYTHON) && goto :found
@rem If py.exe finds a recent enough version, use that one
@for %%p in (3.11 3.10 3.9) do @py -%%p -EV >nul 2>&1 && (set PYTHON=py -%%p) && (set _Py_Python_Source=found %%p with py.exe) && goto :found
@rem It is fine to add new versions to this list when they have released,
@rem but we do not use prerelease builds here.
@for %%p in (3.12 3.11 3.10 3.9) do @py -%%p -EV >nul 2>&1 && (set PYTHON=py -%%p) && (set _Py_Python_Source=found %%p with py.exe) && goto :found
@if NOT exist "%_Py_EXTERNALS_DIR%" mkdir "%_Py_EXTERNALS_DIR%"
@set _Py_NUGET=%NUGET%

18
PCbuild/readme.txt
View file

@ -226,12 +226,18 @@ directory. This script extracts all the external sub-projects from
and
https://github.com/python/cpython-bin-deps
via a Python script called "get_external.py", located in this directory.
If Python 3.6 or later is not available via the "py.exe" launcher, the
path or command to use for Python can be provided in the PYTHON_FOR_BUILD
environment variable, or get_externals.bat will download the latest
version of NuGet and use it to download the latest "pythonx86" package
for use with get_external.py. Everything downloaded by these scripts is
stored in ..\externals (relative to this directory).
Everything downloaded by these scripts is stored in ..\externals
(relative to this directory), or the path specified by the EXTERNALS_DIR
environment variable.
The path or command to use for Python can be provided with the
PYTHON_FOR_BUILD environment variable. If this is not set, an active
virtual environment will be used. If none is active, and HOST_PYTHON is
set to a recent enough version or "py.exe" is able to find a recent
enough version, those will be used. If all else fails, a copy of Python
will be downloaded from NuGet and extracted to the externals directory.
This will then be used for later builds (see PCbuild/find_python.bat
for the full logic).
It is also possible to download sources from each project's homepage,
though you may have to change folder names or pass the names to MSBuild