mirror of
https://github.com/pybind/pybind11.git
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278 lines
10 KiB
CMake
278 lines
10 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 3.7)
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# The `cmake_minimum_required(VERSION 3.7...3.18)` syntax does not work with
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# some versions of VS that have a patched CMake 3.11. This forces us to emulate
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# the behavior using the following workaround:
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if(${CMAKE_VERSION} VERSION_LESS 3.18)
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cmake_policy(VERSION ${CMAKE_MAJOR_VERSION}.${CMAKE_MINOR_VERSION})
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else()
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cmake_policy(VERSION 3.18)
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endif()
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# Extract project version from source
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file(STRINGS "${CMAKE_CURRENT_SOURCE_DIR}/include/pybind11/detail/common.h"
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pybind11_version_defines 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}")
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endif()
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endforeach()
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if(PYBIND11_VERSION_PATCH MATCHES [[([a-zA-Z]+)]])
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set(pybind11_VERSION_TYPE "${CMAKE_MATCH_1}")
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endif()
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string(REGEX MATCH "[0-9]+" PYBIND11_VERSION_PATCH "${PYBIND11_VERSION_PATCH}")
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project(
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pybind11
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LANGUAGES CXX
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VERSION "${PYBIND11_VERSION_MAJOR}.${PYBIND11_VERSION_MINOR}.${PYBIND11_VERSION_PATCH}")
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# Standard includes
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include(GNUInstallDirs)
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include(CMakePackageConfigHelpers)
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include(CMakeDependentOption)
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message(STATUS "pybind11 v${pybind11_VERSION} ${pybind11_VERSION_TYPE}")
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# Check if pybind11 is being used directly or via add_subdirectory
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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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message(STATUS "CMake ${CMAKE_VERSION}")
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if(CMAKE_CXX_STANDARD)
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set(CMAKE_CXX_EXTENSIONS OFF)
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set(CMAKE_CXX_STANDARD_REQUIRED ON)
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endif()
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else()
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set(PYBIND11_MASTER_PROJECT OFF)
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set(pybind11_system SYSTEM)
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endif()
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# Options
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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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option(PYBIND11_CLASSIC_LTO "Use the classic LTO flag algorithm, even on CMake 3.9+" OFF)
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cmake_dependent_option(
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USE_PYTHON_INCLUDE_DIR
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"Install pybind11 headers in Python include directory instead of default installation prefix"
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OFF "PYBIND11_INSTALL" OFF)
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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/iostream.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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# Compare with grep and warn if mismatched
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if(PYBIND11_MASTER_PROJECT AND NOT CMAKE_VERSION VERSION_LESS 3.12)
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file(
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GLOB_RECURSE _pybind11_header_check
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LIST_DIRECTORIES false
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RELATIVE "${CMAKE_CURRENT_SOURCE_DIR}"
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CONFIGURE_DEPENDS "include/pybind11/*.h")
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set(_pybind11_here_only ${PYBIND11_HEADERS})
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set(_pybind11_disk_only ${_pybind11_header_check})
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list(REMOVE_ITEM _pybind11_here_only ${_pybind11_header_check})
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list(REMOVE_ITEM _pybind11_disk_only ${PYBIND11_HEADERS})
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if(_pybind11_here_only)
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message(AUTHOR_WARNING "PYBIND11_HEADERS has extra files:" ${_pybind11_here_only})
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endif()
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if(_pybind11_disk_only)
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message(AUTHOR_WARNING "PYBIND11_HEADERS is missing files:" ${_pybind11_disk_only})
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endif()
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endif()
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# CMake 3.12 added list(TRANSFORM <list> PREPEND
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# But we can't use it yet
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string(REPLACE "include/" "${CMAKE_CURRENT_SOURCE_DIR}/include/" PYBIND11_HEADERS
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"${PYBIND11_HEADERS}")
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# Classic mode
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include("${CMAKE_CURRENT_LIST_DIR}/tools/pybind11Tools.cmake")
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# Cache variables so pybind11_add_module can be used in parent projects
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set(PYBIND11_INCLUDE_DIR
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"${CMAKE_CURRENT_LIST_DIR}/include"
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CACHE INTERNAL "")
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set(PYTHON_INCLUDE_DIRS
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${PYTHON_INCLUDE_DIRS}
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CACHE INTERNAL "")
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set(PYTHON_LIBRARIES
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${PYTHON_LIBRARIES}
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CACHE INTERNAL "")
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set(PYTHON_MODULE_PREFIX
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${PYTHON_MODULE_PREFIX}
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CACHE INTERNAL "")
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set(PYTHON_MODULE_EXTENSION
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${PYTHON_MODULE_EXTENSION}
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CACHE INTERNAL "")
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set(PYTHON_VERSION_MAJOR
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${PYTHON_VERSION_MAJOR}
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CACHE INTERNAL "")
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set(PYTHON_VERSION_MINOR
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${PYTHON_VERSION_MINOR}
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CACHE INTERNAL "")
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set(PYTHON_IS_DEBUG
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"${PYTHON_IS_DEBUG}"
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CACHE INTERNAL "")
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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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# Note: when creating targets, you cannot use if statements at configure time -
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# you need generator expressions, because those will be placed in the target file.
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# You can also place ifs *in* the Config.in, but not here.
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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(
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pybind11 ${pybind11_system} INTERFACE $<BUILD_INTERFACE:${PYBIND11_INCLUDE_DIR}>
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$<INSTALL_INTERFACE:${CMAKE_INSTALL_INCLUDEDIR}>)
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# Only add Python for build - must be added during the import for config since it has to be re-discovered.
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target_include_directories(pybind11 SYSTEM INTERFACE $<BUILD_INTERFACE:${PYTHON_INCLUDE_DIRS}>)
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if(CMAKE_VERSION VERSION_LESS 3.13)
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target_compile_features(pybind11 INTERFACE cxx_inheriting_constructors cxx_user_literals
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cxx_right_angle_brackets)
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else()
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# This was added in CMake 3.8, but we are keeping a consistent breaking
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# point for the config file at 3.13. A config generated by CMake 3.13+
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# can only be read in 3.13+ due to the SHELL usage later, so this is safe to do.
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target_compile_features(pybind11 INTERFACE cxx_std_11)
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endif()
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add_library(module INTERFACE)
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add_library(pybind11::module ALIAS module)
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target_link_libraries(module INTERFACE pybind11::pybind11)
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# See https://github.com/Kitware/CMake/blob/master/Modules/CMakePlatformId.h.in for platform IDs
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# Note: CMake 3.15 allows $<PLATFORM_ID:Windows,Cygwin>
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target_link_libraries(
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module
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INTERFACE
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"$<$<OR:$<PLATFORM_ID:Windows>,$<PLATFORM_ID:Cygwin>>:$<BUILD_INTERFACE:${PYTHON_LIBRARIES}>>")
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if(CMAKE_VERSION VERSION_LESS 3.13)
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target_link_libraries(module INTERFACE "$<$<PLATFORM_ID:Darwin>:-undefined dynamic_lookup>")
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else()
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# SHELL (3.12+) forces this to remain together, and link_options was added in 3.13+
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# This is safer, because you are ensured the deduplication pass in CMake will not consider
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# these separate and remove one but not the other.
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target_link_options(module INTERFACE "$<$<PLATFORM_ID:Darwin>:SHELL:-undefined dynamic_lookup>")
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endif()
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# Workaround for Python 2.7 and C++17 (C++14 as a warning) incompatibility
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# This adds the flags -Wno-register and -Wno-deprecated-register if the compiler
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# is Clang 3.9+ or AppleClang and the compile language is CXX, or /wd5033 for MSVC (all languages,
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# since MSVC didn't recognize COMPILE_LANGUAGE until CMake 3.11+).
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set(clang_4plus
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"$<AND:$<CXX_COMPILER_ID:Clang>,$<NOT:$<VERSION_LESS:$<CXX_COMPILER_VERSION>,3.9>>>")
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set(no_register "$<OR:${clang_4plus},$<CXX_COMPILER_ID:AppleClang>>")
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set(cxx_no_register "$<AND:$<COMPILE_LANGUAGE:CXX>,${no_register}>")
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set(msvc "$<CXX_COMPILER_ID:MSVC>")
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target_compile_options(
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pybind11 INTERFACE "$<${cxx_no_register}:-Wno-register;-Wno-deprecated-register>"
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"$<${msvc}:/wd5033>")
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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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if(PYBIND11_INSTALL)
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install(DIRECTORY ${PYBIND11_INCLUDE_DIR}/pybind11 DESTINATION ${CMAKE_INSTALL_INCLUDEDIR})
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# GNUInstallDirs "DATADIR" wrong here; CMake search path wants "share".
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set(PYBIND11_CMAKECONFIG_INSTALL_DIR
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"share/cmake/${PROJECT_NAME}"
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CACHE STRING "install path for pybind11Config.cmake")
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configure_package_config_file(
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tools/${PROJECT_NAME}Config.cmake.in "${CMAKE_CURRENT_BINARY_DIR}/${PROJECT_NAME}Config.cmake"
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INSTALL_DESTINATION ${PYBIND11_CMAKECONFIG_INSTALL_DIR})
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if(CMAKE_VERSION VERSION_LESS 3.14)
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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 ${CMAKE_SIZEOF_VOID_P})
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unset(CMAKE_SIZEOF_VOID_P)
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write_basic_package_version_file(
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${CMAKE_CURRENT_BINARY_DIR}/${PROJECT_NAME}ConfigVersion.cmake
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VERSION ${PROJECT_VERSION}
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COMPATIBILITY AnyNewerVersion)
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set(CMAKE_SIZEOF_VOID_P ${_PYBIND11_CMAKE_SIZEOF_VOID_P})
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else()
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# CMake 3.14+ natively supports header-only libraries
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write_basic_package_version_file(
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${CMAKE_CURRENT_BINARY_DIR}/${PROJECT_NAME}ConfigVersion.cmake
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VERSION ${PROJECT_VERSION}
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COMPATIBILITY AnyNewerVersion ARCH_INDEPENDENT)
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endif()
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install(
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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 tools/pybind11Tools.cmake
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DESTINATION ${PYBIND11_CMAKECONFIG_INSTALL_DIR})
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if(NOT PYBIND11_EXPORT_NAME)
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set(PYBIND11_EXPORT_NAME "${PROJECT_NAME}Targets")
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endif()
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install(TARGETS pybind11 module embed EXPORT "${PYBIND11_EXPORT_NAME}")
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install(
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EXPORT "${PYBIND11_EXPORT_NAME}"
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NAMESPACE "pybind11::"
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DESTINATION ${PYBIND11_CMAKECONFIG_INSTALL_DIR})
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# Uninstall target
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if(PYBIND11_MASTER_PROJECT)
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configure_file("${CMAKE_CURRENT_SOURCE_DIR}/tools/cmake_uninstall.cmake.in"
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"${CMAKE_CURRENT_BINARY_DIR}/cmake_uninstall.cmake" IMMEDIATE @ONLY)
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add_custom_target(uninstall COMMAND ${CMAKE_COMMAND} -P
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${CMAKE_CURRENT_BINARY_DIR}/cmake_uninstall.cmake)
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endif()
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endif()
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if(PYBIND11_TEST OR (BUILD_TESTING AND PYBIND11_MASTER_PROJECT))
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add_subdirectory(tests)
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endif()
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