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CMake: react to python version changes #3299

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Merged
merged 3 commits into from
Sep 24, 2021
Merged

CMake: react to python version changes #3299

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CMake: react to python version changes
wjakob Sep 24, 2021
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[pre-commit.ci] auto fixes from pre-commit.com hooks
pre-commit-ci[bot] Sep 24, 2021
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Incorporated feedback
wjakob Sep 24, 2021
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9 changes: 9 additions & 0 deletions tools/pybind11NewTools.cmake
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Original file line number Diff line number Diff line change
Expand Up @@ -82,6 +82,15 @@ if(NOT DEFINED ${_Python}_EXECUTABLE)

endif()

if(NOT ${_Python}_EXECUTABLE STREQUAL PYTHON_EXECUTABLE_LAST)
# Detect changes to the Python version/binary in subsequent CMake runs, and refresh config if needed
unset(PYTHON_IS_DEBUG CACHE)
unset(PYTHON_MODULE_EXTENSION CACHE)
set(PYTHON_EXECUTABLE_LAST
"${${_Python}_EXECUTABLE}"
CACHE INTERNAL "Python executable during the last CMake run")
endif()

if(NOT DEFINED PYTHON_IS_DEBUG)
# Debug check - see https://stackoverflow.com/questions/646518/python-how-to-detect-debug-Interpreter
execute_process(
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