mirror of
https://github.com/pybind/pybind11.git
synced 2024-11-24 14:15:11 +00:00
28dbce4157
* feat: require CMake 3.15+ Signed-off-by: Henry Schreiner <henryschreineriii@gmail.com> * Apply suggestions from code review * Update CMakeLists.txt * fix: adapt for CMake 3.30+ (using 3.18+) Signed-off-by: Henry Schreiner <henryschreineriii@gmail.com> --------- Signed-off-by: Henry Schreiner <henryschreineriii@gmail.com>
340 lines
12 KiB
CMake
340 lines
12 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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# Propagate this policy (FindPythonInterp removal) so it can be detected later
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if(NOT CMAKE_VERSION VERSION_LESS "3.27")
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cmake_policy(GET CMP0148 _pybind11_cmp0148)
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endif()
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cmake_minimum_required(VERSION 3.15...3.30)
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if(_pybind11_cmp0148)
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cmake_policy(SET CMP0148 ${_pybind11_cmp0148})
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unset(_pybind11_cmp0148)
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endif()
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# Avoid infinite recursion if tests include this as a subdirectory
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include_guard(GLOBAL)
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# Extract project version from source
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file(STRINGS "${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-Z0-9]+)$]])
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set(pybind11_VERSION_TYPE "${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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if(NOT pybind11_FIND_QUIETLY)
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message(STATUS "pybind11 v${pybind11_VERSION} ${pybind11_VERSION_TYPE}")
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endif()
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# Check if pybind11 is being used directly or via add_subdirectory
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if(CMAKE_SOURCE_DIR STREQUAL PROJECT_SOURCE_DIR)
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### Warn if not an out-of-source builds
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if(CMAKE_CURRENT_SOURCE_DIR STREQUAL CMAKE_CURRENT_BINARY_DIR)
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set(lines
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"You are building in-place. If that is not what you intended to "
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"do, you can clean the source directory with:\n"
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"rm -r CMakeCache.txt CMakeFiles/ cmake_uninstall.cmake pybind11Config.cmake "
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"pybind11ConfigVersion.cmake tests/CMakeFiles/\n")
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message(AUTHOR_WARNING ${lines})
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endif()
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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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set(pybind11_system "")
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set_property(GLOBAL PROPERTY USE_FOLDERS ON)
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if(CMAKE_VERSION VERSION_LESS "3.18")
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set(_pybind11_findpython_default OFF)
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else()
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set(_pybind11_findpython_default 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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set(_pybind11_findpython_default OFF)
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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_NOPYTHON "Disable search for Python" OFF)
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option(PYBIND11_DISABLE_HANDLE_TYPE_NAME_DEFAULT_IMPLEMENTATION
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"To enforce that a handle_type_name<> specialization exists" OFF)
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option(PYBIND11_SIMPLE_GIL_MANAGEMENT
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"Use simpler GIL management logic that does not support disassociation" OFF)
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option(PYBIND11_NUMPY_1_ONLY
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"Disable NumPy 2 support to avoid changes to previous pybind11 versions." OFF)
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set(PYBIND11_INTERNALS_VERSION
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""
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CACHE STRING "Override the ABI version, may be used to enable the unstable ABI.")
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option(PYBIND11_USE_CROSSCOMPILING "Respect CMAKE_CROSSCOMPILING" OFF)
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if(PYBIND11_DISABLE_HANDLE_TYPE_NAME_DEFAULT_IMPLEMENTATION)
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add_compile_definitions(PYBIND11_DISABLE_HANDLE_TYPE_NAME_DEFAULT_IMPLEMENTATION)
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endif()
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if(PYBIND11_SIMPLE_GIL_MANAGEMENT)
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add_compile_definitions(PYBIND11_SIMPLE_GIL_MANAGEMENT)
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endif()
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if(PYBIND11_NUMPY_1_ONLY)
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add_compile_definitions(PYBIND11_NUMPY_1_ONLY)
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endif()
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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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option(PYBIND11_FINDPYTHON "Force new FindPython" ${_pybind11_findpython_default})
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# Allow PYTHON_EXECUTABLE if in FINDPYTHON mode and building pybind11's tests
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# (makes transition easier while we support both modes).
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if(PYBIND11_MASTER_PROJECT
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AND PYBIND11_FINDPYTHON
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AND DEFINED PYTHON_EXECUTABLE
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AND NOT DEFINED Python_EXECUTABLE)
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set(Python_EXECUTABLE "${PYTHON_EXECUTABLE}")
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endif()
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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/type_caster_base.h
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include/pybind11/detail/typeid.h
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include/pybind11/detail/value_and_holder.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/eigen/common.h
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include/pybind11/eigen/matrix.h
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include/pybind11/eigen/tensor.h
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include/pybind11/embed.h
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include/pybind11/eval.h
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include/pybind11/gil.h
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include/pybind11/gil_safe_call_once.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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include/pybind11/stl/filesystem.h
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include/pybind11/type_caster_pyobject_ptr.h
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include/pybind11/typing.h)
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# Compare with grep and warn if mismatched
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if(PYBIND11_MASTER_PROJECT)
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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:" ${_pybind11_disk_only})
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endif()
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endif()
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list(TRANSFORM PYBIND11_HEADERS PREPEND "${CMAKE_CURRENT_SOURCE_DIR}/")
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# Cache variable so this can be used in parent projects
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set(pybind11_INCLUDE_DIR
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"${CMAKE_CURRENT_LIST_DIR}/include"
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CACHE INTERNAL "Directory where pybind11 headers are located")
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# Backward compatible variable for add_subdirectory mode
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if(NOT PYBIND11_MASTER_PROJECT)
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set(PYBIND11_INCLUDE_DIR
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"${pybind11_INCLUDE_DIR}"
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CACHE INTERNAL "")
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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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# This section builds targets, but does *not* touch Python
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# Non-IMPORT targets cannot be defined twice
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if(NOT TARGET pybind11_headers)
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# Build the headers-only target (no Python included):
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# (long name used here to keep this from clashing in subdirectory mode)
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add_library(pybind11_headers INTERFACE)
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add_library(pybind11::pybind11_headers ALIAS pybind11_headers) # to match exported target
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add_library(pybind11::headers ALIAS pybind11_headers) # easier to use/remember
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target_include_directories(
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pybind11_headers ${pybind11_system} INTERFACE $<BUILD_INTERFACE:${pybind11_INCLUDE_DIR}>
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$<INSTALL_INTERFACE:${CMAKE_INSTALL_INCLUDEDIR}>)
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target_compile_features(pybind11_headers INTERFACE cxx_inheriting_constructors cxx_user_literals
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cxx_right_angle_brackets)
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if(NOT "${PYBIND11_INTERNALS_VERSION}" STREQUAL "")
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target_compile_definitions(
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pybind11_headers INTERFACE "PYBIND11_INTERNALS_VERSION=${PYBIND11_INTERNALS_VERSION}")
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endif()
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else()
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# It is invalid to install a target twice, too.
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set(PYBIND11_INSTALL OFF)
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endif()
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include("${CMAKE_CURRENT_SOURCE_DIR}/tools/pybind11Common.cmake")
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# https://github.com/jtojnar/cmake-snips/#concatenating-paths-when-building-pkg-config-files
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# TODO: cmake 3.20 adds the cmake_path() function, which obsoletes this snippet
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include("${CMAKE_CURRENT_SOURCE_DIR}/tools/JoinPaths.cmake")
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# Relative directory setting
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if(USE_PYTHON_INCLUDE_DIR AND DEFINED Python_INCLUDE_DIRS)
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file(RELATIVE_PATH CMAKE_INSTALL_INCLUDEDIR ${CMAKE_INSTALL_PREFIX} ${Python_INCLUDE_DIRS})
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elseif(USE_PYTHON_INCLUDE_DIR AND DEFINED 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(PYBIND11_INSTALL)
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install(DIRECTORY ${pybind11_INCLUDE_DIR}/pybind11 DESTINATION ${CMAKE_INSTALL_INCLUDEDIR})
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set(PYBIND11_CMAKECONFIG_INSTALL_DIR
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"${CMAKE_INSTALL_DATAROOTDIR}/cmake/${PROJECT_NAME}"
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CACHE STRING "install path for pybind11Config.cmake")
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if(IS_ABSOLUTE "${CMAKE_INSTALL_INCLUDEDIR}")
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set(pybind11_INCLUDEDIR "${CMAKE_INSTALL_FULL_INCLUDEDIR}")
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else()
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set(pybind11_INCLUDEDIR "\$\{PACKAGE_PREFIX_DIR\}/${CMAKE_INSTALL_INCLUDEDIR}")
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endif()
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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 ${PYBIND11_CMAKECONFIG_INSTALL_DIR})
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# CMake natively supports header-only libraries
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write_basic_package_version_file(
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${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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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
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tools/pybind11Common.cmake
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tools/pybind11Tools.cmake
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tools/pybind11NewTools.cmake
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tools/pybind11GuessPythonExtSuffix.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_headers 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 ${PYBIND11_CMAKECONFIG_INSTALL_DIR})
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# pkg-config support
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if(NOT prefix_for_pc_file)
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if(IS_ABSOLUTE "${CMAKE_INSTALL_DATAROOTDIR}")
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set(prefix_for_pc_file "${CMAKE_INSTALL_PREFIX}")
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else()
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set(pc_datarootdir "${CMAKE_INSTALL_DATAROOTDIR}")
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if(CMAKE_VERSION VERSION_LESS 3.20)
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set(prefix_for_pc_file "\${pcfiledir}/..")
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while(pc_datarootdir)
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get_filename_component(pc_datarootdir "${pc_datarootdir}" DIRECTORY)
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string(APPEND prefix_for_pc_file "/..")
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endwhile()
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else()
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cmake_path(RELATIVE_PATH CMAKE_INSTALL_PREFIX BASE_DIRECTORY CMAKE_INSTALL_DATAROOTDIR
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OUTPUT_VARIABLE prefix_for_pc_file)
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endif()
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endif()
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endif()
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join_paths(includedir_for_pc_file "\${prefix}" "${CMAKE_INSTALL_INCLUDEDIR}")
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configure_file("${CMAKE_CURRENT_SOURCE_DIR}/tools/pybind11.pc.in"
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"${CMAKE_CURRENT_BINARY_DIR}/pybind11.pc" @ONLY)
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install(FILES "${CMAKE_CURRENT_BINARY_DIR}/pybind11.pc"
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DESTINATION "${CMAKE_INSTALL_DATAROOTDIR}/pkgconfig/")
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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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# BUILD_TESTING takes priority, but only if this is the master project
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if(PYBIND11_MASTER_PROJECT AND DEFINED BUILD_TESTING)
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if(BUILD_TESTING)
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if(_pybind11_nopython)
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message(FATAL_ERROR "Cannot activate tests in NOPYTHON mode")
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else()
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add_subdirectory(tests)
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endif()
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endif()
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else()
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if(PYBIND11_TEST)
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if(_pybind11_nopython)
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message(FATAL_ERROR "Cannot activate tests in NOPYTHON mode")
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else()
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add_subdirectory(tests)
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endif()
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endif()
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endif()
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# Better symmetry with find_package(pybind11 CONFIG) mode.
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if(NOT PYBIND11_MASTER_PROJECT)
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set(pybind11_FOUND
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TRUE
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CACHE INTERNAL "True if pybind11 and all required components found on the system")
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endif()
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