240 lines
11 KiB
CMake
240 lines
11 KiB
CMake
# Check Cython version, need to be >=0.25.2
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# Unset these cached variables to avoid surprises when the python/cython
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# in the current environment are different from the cached!
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unset(PYTHON_EXECUTABLE CACHE)
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unset(CYTHON_EXECUTABLE CACHE)
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find_package(Cython 0.25.2 REQUIRED)
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# User-friendly Cython wrapping and installing function.
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# Builds a Cython module from the provided interface_header.
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# For example, for the interface header gtsam.h,
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# this will build the wrap module 'gtsam'.
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#
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# Arguments:
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#
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# interface_header: The relative path to the wrapper interface definition file.
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# extra_imports: extra header to import in the Cython pxd file.
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# For example, to use Cython gtsam.pxd in your own module,
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# use "from gtsam cimport *"
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# install_path: destination to install the library
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# libs: libraries to link with
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# dependencies: Dependencies which need to be built before the wrapper
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function(wrap_and_install_library_cython interface_header extra_imports install_path libs dependencies)
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# Paths for generated files
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get_filename_component(module_name "${interface_header}" NAME_WE)
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set(generated_files_path "${PROJECT_BINARY_DIR}/cython/${module_name}")
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wrap_library_cython("${interface_header}" "${generated_files_path}" "${extra_imports}" "${libs}" "${dependencies}")
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install_cython_wrapped_library("${interface_header}" "${generated_files_path}" "${install_path}")
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endfunction()
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function(set_up_required_cython_packages)
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# Set up building of cython module
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find_package(PythonLibs 2.7 REQUIRED)
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include_directories(${PYTHON_INCLUDE_DIRS})
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find_package(NumPy REQUIRED)
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include_directories(${NUMPY_INCLUDE_DIRS})
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endfunction()
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# Convert pyx to cpp by executing cython
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# This is the first step to compile cython from the command line
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# as described at: http://cython.readthedocs.io/en/latest/src/reference/compilation.html
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#
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# Arguments:
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# - target: The specified target for this step
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# - pyx_file: The input pyx_file in full *absolute* path
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# - generated_cpp: The output cpp file in full absolute path
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# - include_dirs: Directories to include when executing cython
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function(pyx_to_cpp target pyx_file generated_cpp include_dirs)
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foreach(dir ${include_dirs})
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set(includes_for_cython ${includes_for_cython} -I ${dir})
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endforeach()
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add_custom_command(
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OUTPUT ${generated_cpp}
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COMMAND
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${CYTHON_EXECUTABLE} -a -v --cplus ${includes_for_cython} ${pyx_file} -o ${generated_cpp}
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VERBATIM)
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add_custom_target(${target} ALL DEPENDS ${generated_cpp})
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endfunction()
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# Build the cpp file generated by converting pyx using cython
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# This is the second step to compile cython from the command line
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# as described at: http://cython.readthedocs.io/en/latest/src/reference/compilation.html
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#
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# Arguments:
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# - target: The specified target for this step
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# - cpp_file: The input cpp_file in full *absolute* path
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# - output_lib_we: The output lib filename only (without extension)
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# - output_dir: The output directory
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function(build_cythonized_cpp target cpp_file output_lib_we output_dir)
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add_library(${target} MODULE ${cpp_file})
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set_target_properties(${target} PROPERTIES LINK_FLAGS "-undefined dynamic_lookup"
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OUTPUT_NAME ${output_lib_we} PREFIX "" LIBRARY_OUTPUT_DIRECTORY ${output_dir})
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endfunction()
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# Cythonize a pyx from the command line as described at
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# http://cython.readthedocs.io/en/latest/src/reference/compilation.html
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# Arguments:
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# - target: The specified target
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# - pyx_file: The input pyx_file in full *absolute* path
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# - output_lib_we: The output lib filename only (without extension)
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# - output_dir: The output directory
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# - include_dirs: Directories to include when executing cython
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# - libs: Libraries to link with
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# - dependencies: Other target dependencies
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function(cythonize target pyx_file output_lib_we output_dir include_dirs libs dependencies)
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get_filename_component(pyx_path "${pyx_file}" DIRECTORY)
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get_filename_component(pyx_name "${pyx_file}" NAME_WE)
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set(generated_cpp "${output_dir}/${pyx_name}.cpp")
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set_up_required_cython_packages()
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pyx_to_cpp(${target}_pyx2cpp ${pyx_file} ${generated_cpp} "${include_dirs}")
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if (NOT "${dependencies}" STREQUAL "")
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add_dependencies(${target}_pyx2cpp "${dependencies}")
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endif()
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build_cythonized_cpp(${target} ${generated_cpp} ${output_lib_we} ${output_dir})
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if (NOT "${libs}" STREQUAL "")
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target_link_libraries(${target} "${libs}")
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endif()
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add_dependencies(${target} ${target}_pyx2cpp)
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endfunction()
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# Internal function that wraps a library and compiles the wrapper
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function(wrap_library_cython interface_header generated_files_path extra_imports libs dependencies)
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# Wrap codegen interface
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# Extract module path and name from interface header file name
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# wrap requires interfacePath to be *absolute*
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get_filename_component(interface_header "${interface_header}" ABSOLUTE)
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get_filename_component(module_path "${interface_header}" PATH)
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get_filename_component(module_name "${interface_header}" NAME_WE)
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# Wrap module to Cython pyx
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message(STATUS "Cython wrapper generating ${module_name}.pyx")
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set(generated_pyx "${generated_files_path}/${module_name}.pyx")
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file(MAKE_DIRECTORY "${generated_files_path}")
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add_custom_command(
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OUTPUT ${generated_pyx}
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DEPENDS ${interface_header} wrap
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COMMAND
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wrap --cython ${module_path} ${module_name} ${generated_files_path} "${extra_imports}"
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VERBATIM
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WORKING_DIRECTORY ${generated_files_path}/../)
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add_custom_target(cython_wrap_${module_name}_pyx ALL DEPENDS ${generated_pyx})
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if(NOT "${dependencies}" STREQUAL "")
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add_dependencies(cython_wrap_${module_name}_pyx ${dependencies})
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endif()
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message(STATUS "Cythonize and build ${module_name}.pyx")
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get_property(include_dirs DIRECTORY ${CMAKE_CURRENT_SOURCE_DIR} PROPERTY INCLUDE_DIRECTORIES)
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cythonize(${module_name}_cython ${generated_pyx} ${module_name}
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${generated_files_path} "${include_dirs}" "${libs}" cython_wrap_${module_name}_pyx)
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# distclean
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add_custom_target(wrap_${module_name}_cython_distclean
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COMMAND cmake -E remove_directory ${generated_files_path})
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endfunction()
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# Internal function that installs a wrap toolbox
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function(install_cython_wrapped_library interface_header generated_files_path install_path)
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get_filename_component(module_name "${interface_header}" NAME_WE)
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# NOTE: only installs .pxd and .pyx and binary files (not .cpp) - the trailing slash on the directory name
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# here prevents creating the top-level module name directory in the destination.
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message(STATUS "Installing Cython Toolbox to ${install_path}") #${GTSAM_CYTHON_INSTALL_PATH}")
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if(GTSAM_BUILD_TYPE_POSTFIXES)
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foreach(build_type ${CMAKE_CONFIGURATION_TYPES})
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string(TOUPPER "${build_type}" build_type_upper)
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if(${build_type_upper} STREQUAL "RELEASE")
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set(build_type_tag "") # Don't create release mode tag on installed directory
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else()
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set(build_type_tag "${build_type}")
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endif()
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# Split up filename to strip trailing '/' in GTSAM_CYTHON_INSTALL_PATH if there is one
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get_filename_component(location "${install_path}" PATH)
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get_filename_component(name "${install_path}" NAME)
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install(DIRECTORY "${generated_files_path}/" DESTINATION "${location}/${name}${build_type_tag}"
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CONFIGURATIONS "${build_type}"
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PATTERN "build" EXCLUDE
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PATTERN "CMakeFiles" EXCLUDE
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PATTERN "Makefile" EXCLUDE
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PATTERN "*.cmake" EXCLUDE
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PATTERN "*.cpp" EXCLUDE
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PATTERN "*.py" EXCLUDE)
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endforeach()
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else()
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install(DIRECTORY "${generated_files_path}/" DESTINATION ${install_path}
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PATTERN "build" EXCLUDE
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PATTERN "CMakeFiles" EXCLUDE
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PATTERN "Makefile" EXCLUDE
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PATTERN "*.cmake" EXCLUDE
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PATTERN "*.cpp" EXCLUDE
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PATTERN "*.py" EXCLUDE)
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endif()
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endfunction()
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# Helper function to install Cython scripts and handle multiple build types where the scripts
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# should be installed to all build type toolboxes
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#
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# Arguments:
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# source_directory: The source directory to be installed. "The last component of each directory
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# name is appended to the destination directory but a trailing slash may be
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# used to avoid this because it leaves the last component empty."
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# (https://cmake.org/cmake/help/v3.3/command/install.html?highlight=install#installing-directories)
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# dest_directory: The destination directory to install to.
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# patterns: list of file patterns to install
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function(install_cython_scripts source_directory dest_directory patterns)
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set(patterns_args "")
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set(exclude_patterns "")
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foreach(pattern ${patterns})
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list(APPEND patterns_args PATTERN "${pattern}")
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endforeach()
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if(GTSAM_BUILD_TYPE_POSTFIXES)
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foreach(build_type ${CMAKE_CONFIGURATION_TYPES})
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string(TOUPPER "${build_type}" build_type_upper)
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if(${build_type_upper} STREQUAL "RELEASE")
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set(build_type_tag "") # Don't create release mode tag on installed directory
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else()
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set(build_type_tag "${build_type}")
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endif()
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# Split up filename to strip trailing '/' in GTSAM_CYTHON_INSTALL_PATH if there is one
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get_filename_component(location "${dest_directory}" PATH)
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get_filename_component(name "${dest_directory}" NAME)
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install(DIRECTORY "${source_directory}" DESTINATION "${location}/${name}${build_type_tag}" CONFIGURATIONS "${build_type}"
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FILES_MATCHING ${patterns_args} PATTERN "${exclude_patterns}" EXCLUDE)
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endforeach()
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else()
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install(DIRECTORY "${source_directory}" DESTINATION "${dest_directory}" FILES_MATCHING ${patterns_args} PATTERN "${exclude_patterns}" EXCLUDE)
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endif()
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endfunction()
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# Helper function to install specific files and handle multiple build types where the scripts
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# should be installed to all build type toolboxes
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#
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# Arguments:
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# source_files: The source files to be installed.
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# dest_directory: The destination directory to install to.
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function(install_cython_files source_files dest_directory)
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if(GTSAM_BUILD_TYPE_POSTFIXES)
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foreach(build_type ${CMAKE_CONFIGURATION_TYPES})
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string(TOUPPER "${build_type}" build_type_upper)
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if(${build_type_upper} STREQUAL "RELEASE")
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set(build_type_tag "") # Don't create release mode tag on installed directory
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else()
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set(build_type_tag "${build_type}")
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endif()
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# Split up filename to strip trailing '/' in GTSAM_CYTHON_INSTALL_PATH if there is one
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get_filename_component(location "${dest_directory}" PATH)
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get_filename_component(name "${dest_directory}" NAME)
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install(FILES "${source_files}" DESTINATION "${location}/${name}${build_type_tag}" CONFIGURATIONS "${build_type}")
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endforeach()
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else()
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install(FILES "${source_files}" DESTINATION "${dest_directory}")
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endif()
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endfunction()
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