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[Fix] Auto-detect Python executable in cmake utils #491

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Merged
danieldk merged 3 commits into from
Apr 21, 2026
Merged

[Fix] Auto-detect Python executable in cmake utils #491

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55b6a2e
Fix: use Python3_EXECUTABLE consistently in cmake utils
YangKai0616 Apr 20, 2026
b920716
Fix nix build
YangKai0616 Apr 20, 2026
5b4f965
Merge branch 'main' into local-build
YangKai0616 Apr 20, 2026
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27 changes: 24 additions & 3 deletions kernel-builder/src/pyproject/templates/utils.cmake
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Original file line number Diff line number Diff line change
Expand Up @@ -28,9 +28,16 @@ endmacro()
# python, a fatal message `ERR_MSG` is issued.
#
function (run_python OUT EXPR ERR_MSG)
if(Python3_EXECUTABLE)
set(_PYTHON_EXECUTABLE "${Python3_EXECUTABLE}")
elseif(Python_EXECUTABLE)
set(_PYTHON_EXECUTABLE "${Python_EXECUTABLE}")
else()
message(FATAL_ERROR "No Python executable found. Set Python3_EXECUTABLE or Python_EXECUTABLE.")
endif()
execute_process(
COMMAND
"${Python_EXECUTABLE}" "-c" "${EXPR}"
"${_PYTHON_EXECUTABLE}" "-c" "${EXPR}"
OUTPUT_VARIABLE PYTHON_OUT
RESULT_VARIABLE PYTHON_ERROR_CODE
ERROR_VARIABLE PYTHON_STDERR
Expand All @@ -48,9 +55,16 @@ endfunction()
# non-zero code, a fatal message `ERR_MSG` is issued.
#
function (run_python_script OUT SCRIPT_PATH ERR_MSG)
if(Python3_EXECUTABLE)
set(_PYTHON_EXECUTABLE "${Python3_EXECUTABLE}")
elseif(Python_EXECUTABLE)
set(_PYTHON_EXECUTABLE "${Python_EXECUTABLE}")
else()
message(FATAL_ERROR "No Python executable found. Set Python3_EXECUTABLE or Python_EXECUTABLE.")
endif()
execute_process(
COMMAND
"${Python_EXECUTABLE}" "${SCRIPT_PATH}"
"${_PYTHON_EXECUTABLE}" "${SCRIPT_PATH}"
OUTPUT_VARIABLE PYTHON_OUT
RESULT_VARIABLE PYTHON_ERROR_CODE
ERROR_VARIABLE PYTHON_STDERR
Expand All @@ -68,9 +82,16 @@ endfunction()
# python, `SUCCESS` is set to FALSE. If successful, `SUCCESS` is set to TRUE.
#
function (try_run_python OUT SUCCESS EXPR)
if(Python3_EXECUTABLE)
set(_PYTHON_EXECUTABLE "${Python3_EXECUTABLE}")
elseif(Python_EXECUTABLE)
set(_PYTHON_EXECUTABLE "${Python_EXECUTABLE}")
else()
message(FATAL_ERROR "No Python executable found. Set Python3_EXECUTABLE or Python_EXECUTABLE.")
endif()
execute_process(
COMMAND
"${Python3_EXECUTABLE}" "-c" "${EXPR}"
"${_PYTHON_EXECUTABLE}" "-c" "${EXPR}"
OUTPUT_VARIABLE PYTHON_OUT
RESULT_VARIABLE PYTHON_ERROR_CODE
ERROR_QUIET
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