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We now require CMake 3.14 or later, so the new Python support in CMake should always be available.
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -1,89 +1,22 @@ | ||
| # Like cmake's FindPython but allows the user to override; should also | ||
| # work (to some degree) with older cmake | ||
| # Like cmake's FindPython but allows the user to override | ||
| function(imp_find_python) | ||
| if (${CMAKE_VERSION} VERSION_LESS "3.14.0") | ||
| message(WARNING "Using old Python detection logic. Recommended to upgrade to cmake 3.14.0 or later") | ||
| if(NOT DEFINED PYTHON_INCLUDE_DIRS) | ||
| set(_SEARCH_PYTHON_BINARIES python3 python) | ||
|
|
||
| foreach(pybinary ${_SEARCH_PYTHON_BINARIES}) | ||
| execute_process(COMMAND ${pybinary} -c "import sys; print(sys.executable)" | ||
| RESULT_VARIABLE retval | ||
| WORKING_DIRECTORY ${PROJECT_BINARY_DIR} | ||
| OUTPUT_VARIABLE python_full_path | ||
| OUTPUT_STRIP_TRAILING_WHITESPACE) | ||
| if(${retval} EQUAL 0) | ||
| break() | ||
| endif() | ||
| endforeach() | ||
|
|
||
| if(NOT ${retval} EQUAL 0) | ||
| message(FATAL_ERROR "Could not find a suitable Python binary - looked for ${_SEARCH_PYTHON_BINARIES}") | ||
| endif() | ||
| set(PYTHON_EXECUTABLE ${python_full_path} CACHE INTERNAL "" FORCE) | ||
| set(PYTHON_TEST_EXECUTABLE ${python_full_path} CACHE STRING "") | ||
| endif() | ||
| execute_process(COMMAND ${PYTHON_EXECUTABLE} -c "import sys; print('%d.%d.%d' % sys.version_info[:3])" | ||
| WORKING_DIRECTORY ${PROJECT_BINARY_DIR} | ||
| OUTPUT_VARIABLE python_full_version | ||
| OUTPUT_STRIP_TRAILING_WHITESPACE) | ||
| string(REGEX REPLACE "^([0-9])+\\.[0-9]+.*" "\\1" major | ||
| "${python_full_version}") | ||
| string(REGEX REPLACE "^[0-9]+\\.([0-9]+).*" "\\1" minor | ||
| "${python_full_version}") | ||
| string(REGEX REPLACE "^[0-9]+\\.[0-9]+\\.([0-9]+).*" "\\1" patch | ||
| "${python_full_version}") | ||
| set(PYTHON_VERSION ${python_full_version} CACHE INTERNAL "" FORCE) | ||
| set(PYTHON_VERSION_MAJOR ${major} CACHE INTERNAL "" FORCE) | ||
| set(PYTHON_VERSION_MINOR ${minor} CACHE INTERNAL "" FORCE) | ||
| set(PYTHON_VERSION_PATCH ${patch} CACHE INTERNAL "" FORCE) | ||
| message(STATUS "Python binary is " ${PYTHON_EXECUTABLE} " (version " ${python_full_version} ")") | ||
| if(${major} EQUAL 2) | ||
| message(FATAL_ERROR "Only Python 2 was found; Python 3 is required to build") | ||
| endif() | ||
| if(NOT DEFINED PYTHON_INCLUDE_DIRS) | ||
| find_package(PythonLibs ${python_full_version} EXACT REQUIRED) | ||
| # Make sure PYTHON_INCLUDE_DIRS is in the cache so it can be | ||
| # used elsewhere | ||
| set(PYTHON_INCLUDE_DIRS ${PYTHON_INCLUDE_DIRS} CACHE INTERNAL "") | ||
| endif() | ||
| if(NOT DEFINED PYTHON_NUMPY_INCLUDE_DIR) | ||
| execute_process(COMMAND ${PYTHON_EXECUTABLE} -c | ||
| "try: import numpy; print(numpy.get_include());\nexcept: pass" | ||
| WORKING_DIRECTORY ${CMAKE_BINARY_DIR} | ||
| OUTPUT_VARIABLE __numpy_path | ||
| OUTPUT_STRIP_TRAILING_WHITESPACE) | ||
| find_path(PYTHON_NUMPY_INCLUDE_DIR numpy/arrayobject.h | ||
| HINTS "${__numpy_path}" "${PYTHON_INCLUDE_PATH}" | ||
| NO_DEFAULT_PATH) | ||
| if(PYTHON_NUMPY_INCLUDE_DIR) | ||
| set(PYTHON_NUMPY_FOUND 1 CACHE INTERNAL "Python numpy found") | ||
| endif() | ||
| include(FindPackageHandleStandardArgs) | ||
| find_package_handle_standard_args(NumPy | ||
| REQUIRED_VARS PYTHON_NUMPY_INCLUDE_DIR | ||
| VERSION_VAR __numpy_version) | ||
| endif() | ||
| find_package(Python3 COMPONENTS Interpreter Development NumPy) | ||
|
|
||
| if(Python3_Interpreter_FOUND AND Python3_Development_FOUND) | ||
| # Use Python 3 tools | ||
| set(PYTHON_EXECUTABLE ${Python3_EXECUTABLE} CACHE INTERNAL "" FORCE) | ||
| set(PYTHON_TEST_EXECUTABLE ${Python3_EXECUTABLE} CACHE STRING "") | ||
| set(PYTHON_LIBRARIES ${Python3_LIBRARIES} CACHE INTERNAL "" FORCE) | ||
| set(PYTHON_INCLUDE_DIRS ${Python3_INCLUDE_DIRS} CACHE INTERNAL "" FORCE) | ||
| set(PYTHON_LIBRARY_DIRS ${Python3_LIBRARY_DIRS} CACHE INTERNAL "" FORCE) | ||
| set(PYTHON_NUMPY_FOUND ${Python3_NumPy_FOUND} CACHE INTERNAL "" FORCE) | ||
| set(PYTHON_NUMPY_INCLUDE_DIR ${Python3_NumPy_INCLUDE_DIRS} | ||
| CACHE INTERNAL "" FORCE) | ||
| set(PYTHON_VERSION ${Python3_VERSION} CACHE INTERNAL "" FORCE) | ||
| set(PYTHON_VERSION_MAJOR ${Python3_VERSION_MAJOR} CACHE INTERNAL "" FORCE) | ||
| set(PYTHON_VERSION_MINOR ${Python3_VERSION_MINOR} CACHE INTERNAL "" FORCE) | ||
| set(PYTHON_VERSION_PATCH ${Python3_VERSION_PATCH} CACHE INTERNAL "" FORCE) | ||
| else() | ||
| find_package(Python3 COMPONENTS Interpreter Development NumPy) | ||
|
|
||
| if(Python3_Interpreter_FOUND AND Python3_Development_FOUND) | ||
| # Use Python 3 tools | ||
| set(PYTHON_EXECUTABLE ${Python3_EXECUTABLE} CACHE INTERNAL "" FORCE) | ||
| set(PYTHON_TEST_EXECUTABLE ${Python3_EXECUTABLE} CACHE STRING "") | ||
| set(PYTHON_LIBRARIES ${Python3_LIBRARIES} CACHE INTERNAL "" FORCE) | ||
| set(PYTHON_INCLUDE_DIRS ${Python3_INCLUDE_DIRS} CACHE INTERNAL "" FORCE) | ||
| set(PYTHON_LIBRARY_DIRS ${Python3_LIBRARY_DIRS} CACHE INTERNAL "" FORCE) | ||
| set(PYTHON_NUMPY_FOUND ${Python3_NumPy_FOUND} CACHE INTERNAL "" FORCE) | ||
| set(PYTHON_NUMPY_INCLUDE_DIR ${Python3_NumPy_INCLUDE_DIRS} | ||
| CACHE INTERNAL "" FORCE) | ||
| set(PYTHON_VERSION ${Python3_VERSION} CACHE INTERNAL "" FORCE) | ||
| set(PYTHON_VERSION_MAJOR ${Python3_VERSION_MAJOR} CACHE INTERNAL "" FORCE) | ||
| set(PYTHON_VERSION_MINOR ${Python3_VERSION_MINOR} CACHE INTERNAL "" FORCE) | ||
| set(PYTHON_VERSION_PATCH ${Python3_VERSION_PATCH} CACHE INTERNAL "" FORCE) | ||
| else() | ||
| message(FATAL_ERROR "Could not find a Python interpreter and matching headers/libraries. Python is required to build.") | ||
| endif() | ||
| message(FATAL_ERROR "Could not find a Python interpreter and matching headers/libraries. Python is required to build.") | ||
| endif() | ||
| endfunction(imp_find_python) |