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build: check if python is a executable program
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After Windows 10 version 1903, placeholder files named "python.exe"
and "python3.exe" appear, not executable programs, and open the
MS Store when running without parameters.

Fixes: #36694
Refs: https://devblogs.microsoft.com/python/python-in-the-windows-10-may-2019-update

PR-URL: #36696
Reviewed-By: Jiawen Geng <technicalcute@gmail.com>
Reviewed-By: James M Snell <jasnell@gmail.com>
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himself65 authored and danielleadams committed Mar 14, 2022
1 parent e1e059a commit 2893b4c
Showing 1 changed file with 11 additions and 0 deletions.
11 changes: 11 additions & 0 deletions tools/msvs/find_python.cmd
Original file line number Diff line number Diff line change
Expand Up @@ -46,6 +46,8 @@ exit /b 1

:found-python
echo Python found in %p%\python.exe
call :check-python %p%\python.exe
if errorlevel 1 goto :no-python
endlocal ^
& set "pt=%p%" ^
& set "need_path_ext=%need_path%"
Expand All @@ -54,6 +56,15 @@ set "pt="
set "need_path_ext="
exit /b 0

:check-python
%~1 -V
:: 9009 means error file not found
if %errorlevel% equ 9009 (
echo Not an executable Python program
exit /b 1
)
exit /b 0

:no-python
echo Could not find Python.
exit /b 1

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