mirror of
https://github.com/pybind/pybind11.git
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97b20e537a
It is useful not only to remember the python libs and includes but also the interpreter version in cache. If users call pybind11 throught `add_subdirectories` they will otherwise have no access to the selected interpreter version. The interpreter version is useful for downstream projects, e.g. to select default `lib/pythonX.Y/site-packages/` install paths.
158 lines
6.4 KiB
CMake
158 lines
6.4 KiB
CMake
# CMakeLists.txt -- Build system for the pybind11 modules
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#
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# Copyright (c) 2015 Wenzel Jakob <wenzel@inf.ethz.ch>
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#
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# All rights reserved. Use of this source code is governed by a
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# BSD-style license that can be found in the LICENSE file.
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cmake_minimum_required(VERSION 2.8.12)
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if (POLICY CMP0048)
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# cmake warns if loaded from a min-3.0-required parent dir, so silence the warning:
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cmake_policy(SET CMP0048 NEW)
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endif()
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# CMake versions < 3.4.0 do not support try_compile/pthread checks without C as active language.
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if(CMAKE_VERSION VERSION_LESS 3.4.0)
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project(pybind11)
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else()
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project(pybind11 CXX)
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endif()
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# Check if pybind11 is being used directly or via add_subdirectory
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set(PYBIND11_MASTER_PROJECT OFF)
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if (CMAKE_CURRENT_SOURCE_DIR STREQUAL CMAKE_SOURCE_DIR)
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set(PYBIND11_MASTER_PROJECT ON)
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endif()
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option(PYBIND11_INSTALL "Install pybind11 header files?" ${PYBIND11_MASTER_PROJECT})
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option(PYBIND11_TEST "Build pybind11 test suite?" ${PYBIND11_MASTER_PROJECT})
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list(APPEND CMAKE_MODULE_PATH "${CMAKE_CURRENT_LIST_DIR}/tools")
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include(pybind11Tools)
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# Cache variables so pybind11_add_module can be used in parent projects
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set(PYBIND11_INCLUDE_DIR "${CMAKE_CURRENT_LIST_DIR}/include" CACHE INTERNAL "")
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set(PYTHON_INCLUDE_DIRS ${PYTHON_INCLUDE_DIRS} CACHE INTERNAL "")
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set(PYTHON_LIBRARIES ${PYTHON_LIBRARIES} CACHE INTERNAL "")
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set(PYTHON_MODULE_PREFIX ${PYTHON_MODULE_PREFIX} CACHE INTERNAL "")
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set(PYTHON_MODULE_EXTENSION ${PYTHON_MODULE_EXTENSION} CACHE INTERNAL "")
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set(PYTHON_VERSION_MAJOR ${PYTHON_VERSION_MAJOR} CACHE INTERNAL "")
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set(PYTHON_VERSION_MINOR ${PYTHON_VERSION_MINOR} CACHE INTERNAL "")
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# NB: when adding a header don't forget to also add it to setup.py
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set(PYBIND11_HEADERS
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include/pybind11/detail/class.h
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include/pybind11/detail/common.h
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include/pybind11/detail/descr.h
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include/pybind11/detail/init.h
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include/pybind11/detail/internals.h
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include/pybind11/detail/typeid.h
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include/pybind11/attr.h
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include/pybind11/buffer_info.h
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include/pybind11/cast.h
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include/pybind11/chrono.h
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include/pybind11/common.h
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include/pybind11/complex.h
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include/pybind11/options.h
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include/pybind11/eigen.h
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include/pybind11/embed.h
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include/pybind11/eval.h
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include/pybind11/functional.h
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include/pybind11/numpy.h
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include/pybind11/operators.h
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include/pybind11/pybind11.h
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include/pybind11/pytypes.h
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include/pybind11/stl.h
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include/pybind11/stl_bind.h
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)
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string(REPLACE "include/" "${CMAKE_CURRENT_SOURCE_DIR}/include/"
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PYBIND11_HEADERS "${PYBIND11_HEADERS}")
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if (PYBIND11_TEST)
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add_subdirectory(tests)
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endif()
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include(GNUInstallDirs)
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include(CMakePackageConfigHelpers)
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# extract project version from source
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file(STRINGS "${PYBIND11_INCLUDE_DIR}/pybind11/detail/common.h" pybind11_version_defines
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REGEX "#define PYBIND11_VERSION_(MAJOR|MINOR|PATCH) ")
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foreach(ver ${pybind11_version_defines})
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if (ver MATCHES "#define PYBIND11_VERSION_(MAJOR|MINOR|PATCH) +([^ ]+)$")
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set(PYBIND11_VERSION_${CMAKE_MATCH_1} "${CMAKE_MATCH_2}" CACHE INTERNAL "")
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endif()
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endforeach()
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set(${PROJECT_NAME}_VERSION ${PYBIND11_VERSION_MAJOR}.${PYBIND11_VERSION_MINOR}.${PYBIND11_VERSION_PATCH})
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message(STATUS "pybind11 v${${PROJECT_NAME}_VERSION}")
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option (USE_PYTHON_INCLUDE_DIR "Install pybind11 headers in Python include directory instead of default installation prefix" OFF)
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if (USE_PYTHON_INCLUDE_DIR)
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file(RELATIVE_PATH CMAKE_INSTALL_INCLUDEDIR ${CMAKE_INSTALL_PREFIX} ${PYTHON_INCLUDE_DIRS})
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endif()
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if(NOT (CMAKE_VERSION VERSION_LESS 3.0)) # CMake >= 3.0
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# Build an interface library target:
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add_library(pybind11 INTERFACE)
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add_library(pybind11::pybind11 ALIAS pybind11) # to match exported target
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target_include_directories(pybind11 INTERFACE $<BUILD_INTERFACE:${PYBIND11_INCLUDE_DIR}>
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$<BUILD_INTERFACE:${PYTHON_INCLUDE_DIRS}>
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$<INSTALL_INTERFACE:${CMAKE_INSTALL_INCLUDEDIR}>)
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target_compile_options(pybind11 INTERFACE $<BUILD_INTERFACE:${PYBIND11_CPP_STANDARD}>)
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add_library(module INTERFACE)
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add_library(pybind11::module ALIAS module)
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if(NOT MSVC)
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target_compile_options(module INTERFACE -fvisibility=hidden)
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endif()
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target_link_libraries(module INTERFACE pybind11::pybind11)
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if(WIN32 OR CYGWIN)
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target_link_libraries(module INTERFACE $<BUILD_INTERFACE:${PYTHON_LIBRARIES}>)
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elseif(APPLE)
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target_link_libraries(module INTERFACE "-undefined dynamic_lookup")
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endif()
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add_library(embed INTERFACE)
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add_library(pybind11::embed ALIAS embed)
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target_link_libraries(embed INTERFACE pybind11::pybind11 $<BUILD_INTERFACE:${PYTHON_LIBRARIES}>)
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endif()
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if (PYBIND11_INSTALL)
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install(DIRECTORY ${PYBIND11_INCLUDE_DIR}/pybind11 DESTINATION ${CMAKE_INSTALL_INCLUDEDIR})
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# GNUInstallDirs "DATADIR" wrong here; CMake search path wants "share".
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set(PYBIND11_CMAKECONFIG_INSTALL_DIR "share/cmake/${PROJECT_NAME}" CACHE STRING "install path for pybind11Config.cmake")
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configure_package_config_file(tools/${PROJECT_NAME}Config.cmake.in
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"${CMAKE_CURRENT_BINARY_DIR}/${PROJECT_NAME}Config.cmake"
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INSTALL_DESTINATION ${PYBIND11_CMAKECONFIG_INSTALL_DIR})
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# Remove CMAKE_SIZEOF_VOID_P from ConfigVersion.cmake since the library does
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# not depend on architecture specific settings or libraries.
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set(_PYBIND11_CMAKE_SIZEOF_VOID_P ${CMAKE_SIZEOF_VOID_P})
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unset(CMAKE_SIZEOF_VOID_P)
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write_basic_package_version_file(${CMAKE_CURRENT_BINARY_DIR}/${PROJECT_NAME}ConfigVersion.cmake
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VERSION ${${PROJECT_NAME}_VERSION}
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COMPATIBILITY AnyNewerVersion)
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set(CMAKE_SIZEOF_VOID_P ${_PYBIND11_CMAKE_SIZEOF_VOID_P})
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install(FILES ${CMAKE_CURRENT_BINARY_DIR}/${PROJECT_NAME}Config.cmake
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${CMAKE_CURRENT_BINARY_DIR}/${PROJECT_NAME}ConfigVersion.cmake
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tools/FindPythonLibsNew.cmake
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tools/pybind11Tools.cmake
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DESTINATION ${PYBIND11_CMAKECONFIG_INSTALL_DIR})
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if(NOT (CMAKE_VERSION VERSION_LESS 3.0))
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if(NOT PYBIND11_EXPORT_NAME)
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set(PYBIND11_EXPORT_NAME "${PROJECT_NAME}Targets")
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endif()
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install(TARGETS pybind11 module embed
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EXPORT "${PYBIND11_EXPORT_NAME}")
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if(PYBIND11_MASTER_PROJECT)
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install(EXPORT "${PYBIND11_EXPORT_NAME}"
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NAMESPACE "${PROJECT_NAME}::"
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DESTINATION ${PYBIND11_CMAKECONFIG_INSTALL_DIR})
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endif()
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endif()
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endif()
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