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llvm-project/mlir/cmake/modules/MLIRDetectPythonEnv.cmake

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[mlir][Python] Support finding pybind11 from the python environment. * Makes `pip install pybind11` do the right thing with no further config. * Since we now require a version of pybind11 greater than many LTS OS installs (>=2.6), a more convenient way to get a recent version is preferable. * Also adds the version spec to find_package so it will skip older versions that may be lying around. * Tested the full matrix of old system install, no system install, pip install and no pip install. Differential Revision: https://reviews.llvm.org/D91903
2020-11-21 09:57:46 +08:00
# Macros and functions related to detecting details of the Python environment.
# Detects a pybind11 package installed in the current python environment
# and sets variables to allow it to be found. This allows pybind11 to be
# installed via pip, which typically yields a much more recent version than
# the OS install, which will be available otherwise.
function(mlir_detect_pybind11_install)
if(pybind11_DIR)
message(STATUS "Using explicit pybind11 cmake directory: ${pybind11_DIR} (-Dpybind11_DIR to change)")
else()
[mlir] use STATUS instead of CHECK_* in MLIRDetectPythonEnv.cmake CHECK_* directives for message() where added in Cmake 3.17, LLVM requires 3.14 as minimum so they may not be intepreted correctly and just print "CHECK_*" into the message stream. Replace them with STATUS. Reviewed By: stellaraccident Differential Revision: https://reviews.llvm.org/D91959
2020-11-23 20:58:03 +08:00
message(STATUS "Checking for pybind11 in python path...")
[mlir][Python] Support finding pybind11 from the python environment. * Makes `pip install pybind11` do the right thing with no further config. * Since we now require a version of pybind11 greater than many LTS OS installs (>=2.6), a more convenient way to get a recent version is preferable. * Also adds the version spec to find_package so it will skip older versions that may be lying around. * Tested the full matrix of old system install, no system install, pip install and no pip install. Differential Revision: https://reviews.llvm.org/D91903
2020-11-21 09:57:46 +08:00
execute_process(
[mlir][Python] Fix the last remaining instance of PYTHON_EXECUTABLE. * Was causing auto-detect of pybind11 to fail on clean configure. Differential Revision: https://reviews.llvm.org/D92043
2020-11-25 01:50:18 +08:00
COMMAND "${Python3_EXECUTABLE}"
[mlir][Python] Support finding pybind11 from the python environment. * Makes `pip install pybind11` do the right thing with no further config. * Since we now require a version of pybind11 greater than many LTS OS installs (>=2.6), a more convenient way to get a recent version is preferable. * Also adds the version spec to find_package so it will skip older versions that may be lying around. * Tested the full matrix of old system install, no system install, pip install and no pip install. Differential Revision: https://reviews.llvm.org/D91903
2020-11-21 09:57:46 +08:00
-c "import pybind11;print(pybind11.get_cmake_dir(), end='')"
WORKING_DIRECTORY ${CMAKE_CURRENT_SOURCE_DIR}
RESULT_VARIABLE STATUS
OUTPUT_VARIABLE PACKAGE_DIR
ERROR_QUIET)
if(NOT STATUS EQUAL "0")
[mlir] use STATUS instead of CHECK_* in MLIRDetectPythonEnv.cmake CHECK_* directives for message() where added in Cmake 3.17, LLVM requires 3.14 as minimum so they may not be intepreted correctly and just print "CHECK_*" into the message stream. Replace them with STATUS. Reviewed By: stellaraccident Differential Revision: https://reviews.llvm.org/D91959
2020-11-23 20:58:03 +08:00
message(STATUS "not found (install via 'pip install pybind11' or set pybind11_DIR)")
[mlir][Python] Support finding pybind11 from the python environment. * Makes `pip install pybind11` do the right thing with no further config. * Since we now require a version of pybind11 greater than many LTS OS installs (>=2.6), a more convenient way to get a recent version is preferable. * Also adds the version spec to find_package so it will skip older versions that may be lying around. * Tested the full matrix of old system install, no system install, pip install and no pip install. Differential Revision: https://reviews.llvm.org/D91903
2020-11-21 09:57:46 +08:00
return()
endif()
[mlir] use STATUS instead of CHECK_* in MLIRDetectPythonEnv.cmake CHECK_* directives for message() where added in Cmake 3.17, LLVM requires 3.14 as minimum so they may not be intepreted correctly and just print "CHECK_*" into the message stream. Replace them with STATUS. Reviewed By: stellaraccident Differential Revision: https://reviews.llvm.org/D91959
2020-11-23 20:58:03 +08:00
message(STATUS "found (${PACKAGE_DIR})")
[mlir][Python] Support finding pybind11 from the python environment. * Makes `pip install pybind11` do the right thing with no further config. * Since we now require a version of pybind11 greater than many LTS OS installs (>=2.6), a more convenient way to get a recent version is preferable. * Also adds the version spec to find_package so it will skip older versions that may be lying around. * Tested the full matrix of old system install, no system install, pip install and no pip install. Differential Revision: https://reviews.llvm.org/D91903
2020-11-21 09:57:46 +08:00
set(pybind11_DIR "${PACKAGE_DIR}" PARENT_SCOPE)
endif()
endfunction()