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8ee9e49c49
pybind11/CMakeLists.txt
Ralf W. Grosse-Kunstleve ef5a9560bb
Enable type-safe interoperability between different independent Python/C++ bindings systems. (#5296) 
* `self.__cpp_transporter__()` proof of concept: Enable passing C++ pointers across extensions even if the `PYBIND11_INTERNALS_VERSION`s do not match.

* Include cleanup (mainly to resolve PyPy build failures).

* Fix clang-tidy errors.

* Resolve `error: extra

* factor out platform_abi_id.h from internals.h (no functional changes)

* factor out internals_version.h from internals.h (no functional changes)

* Update CMakeLists.txt, tests/extra_python_package/test_files.py

* Revert "factor out internals_version.h from internals.h (no functional changes)"

This reverts commit 3ccea8cd43.

* Remove internals_version.h from CMakeLists.txt, tests/extra_python_package/test_files.py

* `.__cpp_transporter__()` implementation: compare `pybind11_platform_abi_id`, `cpp_typeid_name`

* Add PremiumTraveler

* Rename test_cpp_transporter_traveler_type.h -> test_cpp_transporter_traveler_types.h

* Expand tests: `PremiumTraveler`, `get_points()`

* Shuffle order of tests (no real changes).

* Move `__cpp_transporter__` lambda to `py::cpp_transporter()` regular function.

* Use `type_caster_generic::load(self)` instead of `cast<T *>(self)`

* Pass `const std::type_info *` via `py::capsule` (instead of `cpp_typeid_name`).

* Make platform_abi_id.h completely stand-alone.

* rename exo_planet.cpp -> exo_planet_pybind11.cpp

* Add exo_planet_c_api.cpp (incomplete).

* Fix silly oversight (wrong filename in `#include`).

* Resolve clang-tidy errors:

```
/__w/pybind11/pybind11/tests/exo_planet_c_api.cpp:10:18: error: 'wrapGetLuggage' is a static definition in anonymous namespace; static is redundant here [readability-static-definition-in-anonymous-namespace,-warnings-as-errors]
   10 | static PyObject *wrapGetLuggage(PyObject *, PyObject *) { return PyUnicode_FromString("TODO"); }
      | ~~~~~~           ^
/__w/pybind11/pybind11/tests/exo_planet_c_api.cpp:14:20: error: 'ThisMethodDef' is a static definition in anonymous namespace; static is redundant here [readability-static-definition-in-anonymous-namespace,-warnings-as-errors]
   14 | static PyMethodDef ThisMethodDef[]
      | ~~~~~~             ^
/__w/pybind11/pybind11/tests/exo_planet_c_api.cpp:17:27: error: 'ThisModuleDef' is a static definition in anonymous namespace; static is redundant here [readability-static-definition-in-anonymous-namespace,-warnings-as-errors]
   17 | static struct PyModuleDef ThisModuleDef = {
      | ~~~~~~                    ^
```

* Implement exo_planet_c_api GetLuggage(), GetPoints()

* Move new code from test_cpp_transporter_traveler_bindings.h to pybind11/detail/type_caster_base.h, under the name `class_dunder_cpp_transporter()`

* Fix oversight.

* Unconditionally add `__cpp_transporter__` method to all `py::class_` objects, but do not include that magic method in docstring signatures.

* Back out pybind11/detail/platform_abi_id.h for now. Maximizing reusability can be handled separately, later.

* Small cleanup.

* Restore and add to `test_call_cpp_transporter_*()`

* Ensure https://github.com/pybind/pybind11/issues/3788 does not bite again.

* `class_dunder_cpp_transporter()`: replace `obj.cast<std::string>()` with `std::string(obj)`

* Add (simple) copyright notices in all newly added files.

* Globally replace cpp_transporter with cpp_conduit

* style: pre-commit fixes

* IWYU fixes

* Rename `class_dunder_cpp_conduit()` -> `cpp_conduit_method()`

* Change `pybind11_platform_abi_id`, `pointer_kind` argument types from `str` to `bytes`.

This avoids the unicode decode/encode roundtrips:

* More robust (no decode/encode errors).

* Minor runtime optimization.

* Systematically rename `cap_cpp_type_info` -> `cpp_type_info_capsule` (no functional changes).

* Systematically replace `cpp_type_info_capsule` `name`: `"const std::type_info *"` -> `typeid(std::type_info).name()` (this IS a functional change).

This provides an extra layer of protection against C++ ABI mismatches:

* The first and most important layer is that the `PYBIND11_PLATFORM_ABI_ID`s must match between extensions.

* The second layer is that the `typeid(std::type_info).name()`s must match between extensions.

* Fix sort order accident in tests/CMakeLists.txt

* Apply suggestions from code review

Co-authored-by: Aaron Gokaslan <aaronGokaslan@gmail.com>

* style: pre-commit fixes

* refactor: rename to _pybind_conduit_v1_

Signed-off-by: Henry Schreiner <henryschreineriii@gmail.com>

* Add test_home_planet_wrap_very_lonely_traveler(), test_exo_planet_pybind11_wrap_very_lonely_traveler()

* Resolve clang-tidy errors:

```
/__w/pybind11/pybind11/tests/test_cpp_conduit_traveler_bindings.h:39:32: error: parameter 'm' is passed by value and only copied once; consider moving it to avoid unnecessary copies [performance-unnecessary-value-param,-warnings-as-errors]
   10 |     py::class_<LonelyTraveler>(m, "LonelyTraveler");
      |                                ^
      |                                std::move( )
/__w/pybind11/pybind11/tests/test_cpp_conduit_traveler_bindings.h:43:52: error: parameter 'm' is passed by value and only copied once; consider moving it to avoid unnecessary copies [performance-unnecessary-value-param,-warnings-as-errors]
   43 |     py::class_<VeryLonelyTraveler, LonelyTraveler>(m, "VeryLonelyTraveler");
      |                                                    ^
      |                                                    std::move( )
```

---------

Signed-off-by: Henry Schreiner <henryschreineriii@gmail.com>
Co-authored-by: Ralf W. Grosse-Kunstleve <rwgk@google.com>
Co-authored-by: pre-commit-ci[bot] <66853113+pre-commit-ci[bot]@users.noreply.github.com>
Co-authored-by: Henry Schreiner <HenrySchreinerIII@gmail.com>
Co-authored-by: Aaron Gokaslan <aaronGokaslan@gmail.com>
2024-09-13 00:18:29 -04:00

343 lines
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CMake
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# CMakeLists.txt -- Build system for the pybind11 modules
#
# Copyright (c) 2015 Wenzel Jakob <wenzel@inf.ethz.ch>
#
# All rights reserved. Use of this source code is governed by a
# BSD-style license that can be found in the LICENSE file.
# Propagate this policy (FindPythonInterp removal) so it can be detected later
if(NOT CMAKE_VERSION VERSION_LESS "3.27")
cmake_policy(GET CMP0148 _pybind11_cmp0148)
endif()
cmake_minimum_required(VERSION 3.15...3.30)
if(_pybind11_cmp0148)
cmake_policy(SET CMP0148 ${_pybind11_cmp0148})
unset(_pybind11_cmp0148)
endif()
# Avoid infinite recursion if tests include this as a subdirectory
include_guard(GLOBAL)
# Extract project version from source
file(STRINGS "${CMAKE_CURRENT_SOURCE_DIR}/include/pybind11/detail/common.h"
pybind11_version_defines REGEX "#define PYBIND11_VERSION_(MAJOR|MINOR|PATCH) ")
foreach(ver ${pybind11_version_defines})
if(ver MATCHES [[#define PYBIND11_VERSION_(MAJOR|MINOR|PATCH) +([^ ]+)$]])
set(PYBIND11_VERSION_${CMAKE_MATCH_1} "${CMAKE_MATCH_2}")
endif()
endforeach()
if(PYBIND11_VERSION_PATCH MATCHES [[\.([a-zA-Z0-9]+)$]])
set(pybind11_VERSION_TYPE "${CMAKE_MATCH_1}")
endif()
string(REGEX MATCH "^[0-9]+" PYBIND11_VERSION_PATCH "${PYBIND11_VERSION_PATCH}")
project(
pybind11
LANGUAGES CXX
VERSION "${PYBIND11_VERSION_MAJOR}.${PYBIND11_VERSION_MINOR}.${PYBIND11_VERSION_PATCH}")
# Standard includes
include(GNUInstallDirs)
include(CMakePackageConfigHelpers)
include(CMakeDependentOption)
if(NOT pybind11_FIND_QUIETLY)
message(STATUS "pybind11 v${pybind11_VERSION} ${pybind11_VERSION_TYPE}")
endif()
# Check if pybind11 is being used directly or via add_subdirectory
if(CMAKE_SOURCE_DIR STREQUAL PROJECT_SOURCE_DIR)
### Warn if not an out-of-source builds
if(CMAKE_CURRENT_SOURCE_DIR STREQUAL CMAKE_CURRENT_BINARY_DIR)
set(lines
"You are building in-place. If that is not what you intended to "
"do, you can clean the source directory with:\n"
"rm -r CMakeCache.txt CMakeFiles/ cmake_uninstall.cmake pybind11Config.cmake "
"pybind11ConfigVersion.cmake tests/CMakeFiles/\n")
message(AUTHOR_WARNING ${lines})
endif()
set(PYBIND11_MASTER_PROJECT ON)
message(STATUS "CMake ${CMAKE_VERSION}")
if(CMAKE_CXX_STANDARD)
set(CMAKE_CXX_EXTENSIONS OFF)
set(CMAKE_CXX_STANDARD_REQUIRED ON)
endif()
set(pybind11_system "")
set_property(GLOBAL PROPERTY USE_FOLDERS ON)
if(CMAKE_VERSION VERSION_LESS "3.18")
set(_pybind11_findpython_default OFF)
else()
set(_pybind11_findpython_default ON)
endif()
else()
set(PYBIND11_MASTER_PROJECT OFF)
set(pybind11_system SYSTEM)
set(_pybind11_findpython_default OFF)
endif()
# Options
option(PYBIND11_INSTALL "Install pybind11 header files?" ${PYBIND11_MASTER_PROJECT})
option(PYBIND11_TEST "Build pybind11 test suite?" ${PYBIND11_MASTER_PROJECT})
option(PYBIND11_NOPYTHON "Disable search for Python" OFF)
option(PYBIND11_DISABLE_HANDLE_TYPE_NAME_DEFAULT_IMPLEMENTATION
"To enforce that a handle_type_name<> specialization exists" OFF)
option(PYBIND11_SIMPLE_GIL_MANAGEMENT
"Use simpler GIL management logic that does not support disassociation" OFF)
option(PYBIND11_NUMPY_1_ONLY
"Disable NumPy 2 support to avoid changes to previous pybind11 versions." OFF)
set(PYBIND11_INTERNALS_VERSION
""
CACHE STRING "Override the ABI version, may be used to enable the unstable ABI.")
option(PYBIND11_USE_CROSSCOMPILING "Respect CMAKE_CROSSCOMPILING" OFF)
if(PYBIND11_DISABLE_HANDLE_TYPE_NAME_DEFAULT_IMPLEMENTATION)
add_compile_definitions(PYBIND11_DISABLE_HANDLE_TYPE_NAME_DEFAULT_IMPLEMENTATION)
endif()
if(PYBIND11_SIMPLE_GIL_MANAGEMENT)
add_compile_definitions(PYBIND11_SIMPLE_GIL_MANAGEMENT)
endif()
if(PYBIND11_NUMPY_1_ONLY)
add_compile_definitions(PYBIND11_NUMPY_1_ONLY)
endif()
cmake_dependent_option(
USE_PYTHON_INCLUDE_DIR
"Install pybind11 headers in Python include directory instead of default installation prefix"
OFF "PYBIND11_INSTALL" OFF)
option(PYBIND11_FINDPYTHON "Force new FindPython" ${_pybind11_findpython_default})
# Allow PYTHON_EXECUTABLE if in FINDPYTHON mode and building pybind11's tests
# (makes transition easier while we support both modes).
if(PYBIND11_MASTER_PROJECT
AND PYBIND11_FINDPYTHON
AND DEFINED PYTHON_EXECUTABLE
AND NOT DEFINED Python_EXECUTABLE)
set(Python_EXECUTABLE "${PYTHON_EXECUTABLE}")
endif()
# NB: when adding a header don't forget to also add it to setup.py
set(PYBIND11_HEADERS
include/pybind11/detail/class.h
include/pybind11/detail/common.h
include/pybind11/detail/cpp_conduit.h
include/pybind11/detail/descr.h
include/pybind11/detail/init.h
include/pybind11/detail/internals.h
include/pybind11/detail/type_caster_base.h
include/pybind11/detail/typeid.h
include/pybind11/detail/value_and_holder.h
include/pybind11/detail/exception_translation.h
include/pybind11/attr.h
include/pybind11/buffer_info.h
include/pybind11/cast.h
include/pybind11/chrono.h
include/pybind11/common.h
include/pybind11/complex.h
include/pybind11/options.h
include/pybind11/eigen.h
include/pybind11/eigen/common.h
include/pybind11/eigen/matrix.h
include/pybind11/eigen/tensor.h
include/pybind11/embed.h
include/pybind11/eval.h
include/pybind11/gil.h
include/pybind11/gil_safe_call_once.h
include/pybind11/iostream.h
include/pybind11/functional.h
include/pybind11/numpy.h
include/pybind11/operators.h
include/pybind11/pybind11.h
include/pybind11/pytypes.h
include/pybind11/stl.h
include/pybind11/stl_bind.h
include/pybind11/stl/filesystem.h
include/pybind11/type_caster_pyobject_ptr.h
include/pybind11/typing.h
include/pybind11/warnings.h)
# Compare with grep and warn if mismatched
if(PYBIND11_MASTER_PROJECT)
file(
GLOB_RECURSE _pybind11_header_check
LIST_DIRECTORIES false
RELATIVE "${CMAKE_CURRENT_SOURCE_DIR}"
CONFIGURE_DEPENDS "include/pybind11/*.h")
set(_pybind11_here_only ${PYBIND11_HEADERS})
set(_pybind11_disk_only ${_pybind11_header_check})
list(REMOVE_ITEM _pybind11_here_only ${_pybind11_header_check})
list(REMOVE_ITEM _pybind11_disk_only ${PYBIND11_HEADERS})
if(_pybind11_here_only)
message(AUTHOR_WARNING "PYBIND11_HEADERS has extra files:" ${_pybind11_here_only})
endif()
if(_pybind11_disk_only)
message(AUTHOR_WARNING "PYBIND11_HEADERS is missing files:" ${_pybind11_disk_only})
endif()
endif()
list(TRANSFORM PYBIND11_HEADERS PREPEND "${CMAKE_CURRENT_SOURCE_DIR}/")
# Cache variable so this can be used in parent projects
set(pybind11_INCLUDE_DIR
"${CMAKE_CURRENT_LIST_DIR}/include"
CACHE INTERNAL "Directory where pybind11 headers are located")
# Backward compatible variable for add_subdirectory mode
if(NOT PYBIND11_MASTER_PROJECT)
set(PYBIND11_INCLUDE_DIR
"${pybind11_INCLUDE_DIR}"
CACHE INTERNAL "")
endif()
# Note: when creating targets, you cannot use if statements at configure time -
# you need generator expressions, because those will be placed in the target file.
# You can also place ifs *in* the Config.in, but not here.
# This section builds targets, but does *not* touch Python
# Non-IMPORT targets cannot be defined twice
if(NOT TARGET pybind11_headers)
# Build the headers-only target (no Python included):
# (long name used here to keep this from clashing in subdirectory mode)
add_library(pybind11_headers INTERFACE)
add_library(pybind11::pybind11_headers ALIAS pybind11_headers) # to match exported target
add_library(pybind11::headers ALIAS pybind11_headers) # easier to use/remember
target_include_directories(
pybind11_headers ${pybind11_system} INTERFACE $<BUILD_INTERFACE:${pybind11_INCLUDE_DIR}>
$<INSTALL_INTERFACE:${CMAKE_INSTALL_INCLUDEDIR}>)
target_compile_features(pybind11_headers INTERFACE cxx_inheriting_constructors cxx_user_literals
cxx_right_angle_brackets)
if(NOT "${PYBIND11_INTERNALS_VERSION}" STREQUAL "")
target_compile_definitions(
pybind11_headers INTERFACE "PYBIND11_INTERNALS_VERSION=${PYBIND11_INTERNALS_VERSION}")
endif()
else()
# It is invalid to install a target twice, too.
set(PYBIND11_INSTALL OFF)
endif()
include("${CMAKE_CURRENT_SOURCE_DIR}/tools/pybind11Common.cmake")
# https://github.com/jtojnar/cmake-snips/#concatenating-paths-when-building-pkg-config-files
# TODO: cmake 3.20 adds the cmake_path() function, which obsoletes this snippet
include("${CMAKE_CURRENT_SOURCE_DIR}/tools/JoinPaths.cmake")
# Relative directory setting
if(USE_PYTHON_INCLUDE_DIR AND DEFINED Python_INCLUDE_DIRS)
file(RELATIVE_PATH CMAKE_INSTALL_INCLUDEDIR ${CMAKE_INSTALL_PREFIX} ${Python_INCLUDE_DIRS})
elseif(USE_PYTHON_INCLUDE_DIR AND DEFINED PYTHON_INCLUDE_DIR)
file(RELATIVE_PATH CMAKE_INSTALL_INCLUDEDIR ${CMAKE_INSTALL_PREFIX} ${PYTHON_INCLUDE_DIRS})
endif()
if(PYBIND11_INSTALL)
install(DIRECTORY ${pybind11_INCLUDE_DIR}/pybind11 DESTINATION ${CMAKE_INSTALL_INCLUDEDIR})
set(PYBIND11_CMAKECONFIG_INSTALL_DIR
"${CMAKE_INSTALL_DATAROOTDIR}/cmake/${PROJECT_NAME}"
CACHE STRING "install path for pybind11Config.cmake")
if(IS_ABSOLUTE "${CMAKE_INSTALL_INCLUDEDIR}")
set(pybind11_INCLUDEDIR "${CMAKE_INSTALL_FULL_INCLUDEDIR}")
else()
set(pybind11_INCLUDEDIR "\$\{PACKAGE_PREFIX_DIR\}/${CMAKE_INSTALL_INCLUDEDIR}")
endif()
configure_package_config_file(
tools/${PROJECT_NAME}Config.cmake.in "${CMAKE_CURRENT_BINARY_DIR}/${PROJECT_NAME}Config.cmake"
INSTALL_DESTINATION ${PYBIND11_CMAKECONFIG_INSTALL_DIR})
# CMake natively supports header-only libraries
write_basic_package_version_file(
${CMAKE_CURRENT_BINARY_DIR}/${PROJECT_NAME}ConfigVersion.cmake
VERSION ${PROJECT_VERSION}
COMPATIBILITY AnyNewerVersion ARCH_INDEPENDENT)
install(
FILES ${CMAKE_CURRENT_BINARY_DIR}/${PROJECT_NAME}Config.cmake
${CMAKE_CURRENT_BINARY_DIR}/${PROJECT_NAME}ConfigVersion.cmake
tools/FindPythonLibsNew.cmake
tools/pybind11Common.cmake
tools/pybind11Tools.cmake
tools/pybind11NewTools.cmake
tools/pybind11GuessPythonExtSuffix.cmake
DESTINATION ${PYBIND11_CMAKECONFIG_INSTALL_DIR})
if(NOT PYBIND11_EXPORT_NAME)
set(PYBIND11_EXPORT_NAME "${PROJECT_NAME}Targets")
endif()
install(TARGETS pybind11_headers EXPORT "${PYBIND11_EXPORT_NAME}")
install(
EXPORT "${PYBIND11_EXPORT_NAME}"
NAMESPACE "pybind11::"
DESTINATION ${PYBIND11_CMAKECONFIG_INSTALL_DIR})
# pkg-config support
if(NOT prefix_for_pc_file)
if(IS_ABSOLUTE "${CMAKE_INSTALL_DATAROOTDIR}")
set(prefix_for_pc_file "${CMAKE_INSTALL_PREFIX}")
else()
set(pc_datarootdir "${CMAKE_INSTALL_DATAROOTDIR}")
if(CMAKE_VERSION VERSION_LESS 3.20)
set(prefix_for_pc_file "\${pcfiledir}/..")
while(pc_datarootdir)
get_filename_component(pc_datarootdir "${pc_datarootdir}" DIRECTORY)
string(APPEND prefix_for_pc_file "/..")
endwhile()
else()
cmake_path(RELATIVE_PATH CMAKE_INSTALL_PREFIX BASE_DIRECTORY CMAKE_INSTALL_DATAROOTDIR
OUTPUT_VARIABLE prefix_for_pc_file)
endif()
endif()
endif()
join_paths(includedir_for_pc_file "\${prefix}" "${CMAKE_INSTALL_INCLUDEDIR}")
configure_file("${CMAKE_CURRENT_SOURCE_DIR}/tools/pybind11.pc.in"
"${CMAKE_CURRENT_BINARY_DIR}/pybind11.pc" @ONLY)
install(FILES "${CMAKE_CURRENT_BINARY_DIR}/pybind11.pc"
DESTINATION "${CMAKE_INSTALL_DATAROOTDIR}/pkgconfig/")
# Uninstall target
if(PYBIND11_MASTER_PROJECT)
configure_file("${CMAKE_CURRENT_SOURCE_DIR}/tools/cmake_uninstall.cmake.in"
"${CMAKE_CURRENT_BINARY_DIR}/cmake_uninstall.cmake" IMMEDIATE @ONLY)
add_custom_target(uninstall COMMAND ${CMAKE_COMMAND} -P
${CMAKE_CURRENT_BINARY_DIR}/cmake_uninstall.cmake)
endif()
endif()
# BUILD_TESTING takes priority, but only if this is the master project
if(PYBIND11_MASTER_PROJECT AND DEFINED BUILD_TESTING)
if(BUILD_TESTING)
if(_pybind11_nopython)
message(FATAL_ERROR "Cannot activate tests in NOPYTHON mode")
else()
add_subdirectory(tests)
endif()
endif()
else()
if(PYBIND11_TEST)
if(_pybind11_nopython)
message(FATAL_ERROR "Cannot activate tests in NOPYTHON mode")
else()
add_subdirectory(tests)
endif()
endif()
endif()
# Better symmetry with find_package(pybind11 CONFIG) mode.
if(NOT PYBIND11_MASTER_PROJECT)
set(pybind11_FOUND
TRUE
CACHE INTERNAL "True if pybind11 and all required components found on the system")
endif()
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