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Add find python debug executable #5581

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Add find python debug executable #5581

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2e9fc46
Add find python debug executable
Mar 26, 2025
927daa9
style: pre-commit fixes
pre-commit-ci[bot] Mar 26, 2025
45862ce
Add find python debug executable
Mar 26, 2025
836784b
style: pre-commit fixes
pre-commit-ci[bot] Mar 26, 2025
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18 changes: 13 additions & 5 deletions tools/pybind11NewTools.cmake
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Original file line number Diff line number Diff line change
Expand Up @@ -125,14 +125,22 @@ if(NOT _PYBIND11_CROSSCOMPILING)
unset(PYTHON_MODULE_EXTENSION CACHE)
endif()

set(PYBIND11_PYTHON_EXECUTABLE_LAST
"${${_Python}_EXECUTABLE}"
CACHE INTERNAL "Python executable during the last CMake run")
if(CMAKE_BUILD_TYPE STREQUAL "Debug"
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@henryiii henryiii Mar 26, 2025 •
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Multi-configuration generators (like MSVC or Ninja multi config) configure for both at the same time, how does this interact with those?

AND DEFINED ${_Python}_EXECUTABLE_DEBUG
AND IS_EXECUTABLE ${${_Python}_EXECUTABLE_DEBUG})
set(PYBIND11_PYTHON_EXECUTABLE_LAST
"${${_Python}_EXECUTABLE_DEBUG}"
CACHE INTERNAL "Python executable during the last CMake run")
else()
set(PYBIND11_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(
COMMAND "${${_Python}_EXECUTABLE}" "-c"
COMMAND "${PYBIND11_PYTHON_EXECUTABLE_LAST}" "-c"
"import sys; sys.exit(hasattr(sys, 'gettotalrefcount'))"
RESULT_VARIABLE _PYTHON_IS_DEBUG)
set(PYTHON_IS_DEBUG
Expand All @@ -145,7 +153,7 @@ if(NOT _PYBIND11_CROSSCOMPILING)
if(NOT DEFINED PYTHON_MODULE_EXTENSION OR NOT DEFINED PYTHON_MODULE_DEBUG_POSTFIX)
execute_process(
COMMAND
"${${_Python}_EXECUTABLE}" "-c"
"${PYBIND11_PYTHON_EXECUTABLE_LAST}" "-c"
"import sys, importlib; s = importlib.import_module('distutils.sysconfig' if sys.version_info < (3, 10) else 'sysconfig'); print(s.get_config_var('EXT_SUFFIX') or s.get_config_var('SO'))"
OUTPUT_VARIABLE _PYTHON_MODULE_EXT_SUFFIX
ERROR_VARIABLE _PYTHON_MODULE_EXT_SUFFIX_ERR
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