154 lines
4.4 KiB
CMake
154 lines
4.4 KiB
CMake
# FindPython
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# --------
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#
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# Find the Python libraries(Only for Python provided by LAMPCAE)
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#
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# Result Variables
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# ^^^^^^^^^^^^^^^^
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#
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# The following variables will be defined:
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#
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# ``Python_FOUND`` True if Python found on the local system
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#
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# ``Python_VERSION`` Python Version(x.x.x)
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#
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# ``Python_VERSION_MAJOR`` Python Major Version
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#
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# ``Python_VERSION_MINOR`` Python Minor Version
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#
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# ``Python_VERSION_PATCH`` Python Patch Version
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#
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# ``Python_DIRS`` Location of Python(root dir)
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#
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# ``Python_INCLUDE_DIRS`` Location of Python header files
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#
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# ``Python_LIBRARY_DIRS`` Location of Python libraries
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#
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# ``Python_LIBRARIES`` List of the Python libraries found
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#
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# ``Python_EXECUTABLE`` Location of Python program
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#
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# 防止重复引入
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if(LAMPCAE_Python_ALREADY_INCLUDED)
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return()
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endif()
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set(LAMPCAE_Python_ALREADY_INCLUDED 1)
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set(Python_VERSION_MAJOR 3)
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set(Python_VERSION_MINOR 9)
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set(Python_VERSION_PATCH 0)
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# find_path 搜索包含某个文件的路径
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# 如果在某个路径下发现了该文件，该结果会被存储到该变量中；如果没有找到，存储的结果将会是<VAR>-NOTFOUND
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if(CMAKE_SYSTEM_NAME STREQUAL "Linux")
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set(_python_h_dir "include/python${Python_VERSION_MAJOR}.${Python_VERSION_MINOR}m")
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elseif(CMAKE_SYSTEM_NAME STREQUAL "Windows")
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set(_python_h_dir "include")
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endif()
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find_path(Python_DIRS
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NAMES
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"${_python_h_dir}/Python.h"
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PATHS
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${CMAKE_SOURCE_DIR}/extlib/Python
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NO_SYSTEM_ENVIRONMENT_PATH
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NO_CMAKE_SYSTEM_PATH
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)
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find_path(Python_INCLUDE_DIRS
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NAMES
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Python.h
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HINTS
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${Python_DIRS}/${_python_h_dir}
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)
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if(CMAKE_SYSTEM_NAME STREQUAL "Windows")
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set(Python_EXECUTABLE "${Python_DIRS}/python.exe")
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else()
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set(Python_EXECUTABLE "${Python_DIRS}/bin/python${Python_VERSION_MAJOR}.${Python_VERSION_MINOR}")
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endif()
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#[[if(EXISTS ${Python_EXECUTABLE})
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message(STATUS "Python_EXECUTABLE: ${Python_EXECUTABLE}")
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else()
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set(Python_EXECUTABLE "Python_EXECUTABLE-NOTFOUND")
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endif()]]
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#[[execute_process(
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COMMAND
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${Python_EXECUTABLE} "-c" "import sys\nprint(sys.version_info)"
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RESULT_VARIABLE _status
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OUTPUT_VARIABLE _version
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ERROR_QUIET
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OUTPUT_STRIP_TRAILING_WHITESPACE
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)
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function(_findPythonVersion _key _output)
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# 初始化
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set(CMAKE_MATCH_1 "0")
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# 定义正则
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set(_version_expr "${_key}=([0-9]+),")
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# 匹配
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string(REGEX MATCH "${_version_expr}" Python_ver "${_version}")
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# PARENT_SCOPE选项，意味着该变量的作用域会传递到上一层（函数的调用者）
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set(${_output} "${CMAKE_MATCH_1}" PARENT_SCOPE)
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endfunction(_findPythonVersion)
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_findPythonVersion("major" Python_VERSION_MAJOR)
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_findPythonVersion("minor" Python_VERSION_MINOR)
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_findPythonVersion("micro" Python_VERSION_PATCH)]]
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set(Python_VERSION "${Python_VERSION_MAJOR}.${Python_VERSION_MINOR}.${Python_VERSION_PATCH}")
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find_path(Python_LIBRARY_DIRS
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NAMES
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python${Python_VERSION_MAJOR}${Python_VERSION_MINOR}.lib libpython${Python_VERSION_MAJOR}.${Python_VERSION_MINOR}m.so
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HINTS
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${Python_DIRS}/libs ${Python_DIRS}/lib
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)
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set(Python_LIBRARIES LAMPCAE::PYTHON)
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add_library(LAMPCAE::PYTHON SHARED IMPORTED)
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set_property(TARGET LAMPCAE::PYTHON PROPERTY INTERFACE_INCLUDE_DIRECTORIES ${Python_INCLUDE_DIRS})
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set_property(TARGET LAMPCAE::PYTHON APPEND PROPERTY IMPORTED_CONFIGURATIONS RELEASE)
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if(CMAKE_SYSTEM_NAME STREQUAL "Linux")
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add_library(LAMPCAE::FFI SHARED IMPORTED)
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set_property(TARGET LAMPCAE::FFI APPEND PROPERTY IMPORTED_CONFIGURATIONS RELEASE)
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set_target_properties(LAMPCAE::FFI PROPERTIES
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IMPORTED_LOCATION_RELEASE "${Python_LIBRARY_DIRS}/libffi.so.8.1.0"
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IMPORTED_SONAME_RELEASE "libffi.so.8"
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)
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set_target_properties(LAMPCAE::PYTHON PROPERTIES
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IMPORTED_LOCATION_RELEASE "${Python_LIBRARY_DIRS}/libpython${Python_VERSION_MAJOR}.${Python_VERSION_MINOR}m.so.1.0"
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IMPORTED_SONAME_RELEASE "libpython${Python_VERSION_MAJOR}.${Python_VERSION_MINOR}m.so"
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)
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elseif(CMAKE_SYSTEM_NAME STREQUAL "Windows")
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set_target_properties(LAMPCAE::PYTHON PROPERTIES
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IMPORTED_IMPLIB_RELEASE "${Python_LIBRARY_DIRS}/python${Python_VERSION_MAJOR}${Python_VERSION_MINOR}.lib"
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IMPORTED_LOCATION_RELEASE "${Python_DIRS}/python${Python_VERSION_MAJOR}${Python_VERSION_MINOR}.dll"
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)
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endif()
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include(FindPackageHandleStandardArgs)
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# 如果找到所有需要的变量，并且版本匹配，则将Python_FOUND变量设置为TRUE
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find_package_handle_standard_args(Python
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FOUND_VAR
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Python_FOUND
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REQUIRED_VARS
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Python_DIRS
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Python_INCLUDE_DIRS
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Python_LIBRARY_DIRS
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Python_LIBRARIES
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Python_EXECUTABLE
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VERSION_VAR
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Python_VERSION
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)
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