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Merge branch 'pybind:master' into master

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10
.github/CONTRIBUTING.md vendored
View File

@ -81,7 +81,7 @@ nox -s build
### Full setup
To setup an ideal development environment, run the following commands on a
system with CMake 3.14+:
system with CMake 3.15+:
```bash
python3 -m venv venv
@ -96,8 +96,8 @@ Tips:
* You can use `virtualenv` (faster, from PyPI) instead of `venv`.
* You can select any name for your environment folder; if it contains "env" it
will be ignored by git.
* If you don't have CMake 3.14+, just add "cmake" to the pip install command.
* You can use `-DPYBIND11_FINDPYTHON=ON` to use FindPython on CMake 3.12+
* If you don't have CMake 3.15+, just add "cmake" to the pip install command.
* You can use `-DPYBIND11_FINDPYTHON=ON` to use FindPython.
* In classic mode, you may need to set `-DPYTHON_EXECUTABLE=/path/to/python`.
FindPython uses `-DPython_ROOT_DIR=/path/to` or
`-DPython_EXECUTABLE=/path/to/python`.
@ -149,8 +149,8 @@ To run the tests, you can "build" the check target:
cmake --build build --target check
```
`--target` can be spelled `-t` in CMake 3.15+. You can also run individual
tests with these targets:
`--target` can be spelled `-t`. You can also run individual tests with these
targets:
* `pytest`: Python tests only, using the
[pytest](https://docs.pytest.org/en/stable/) framework

4
.github/workflows/configure.yml vendored
View File

@ -31,7 +31,7 @@ jobs:
include:
- runs-on: ubuntu-20.04
arch: x64
cmake: "3.5"
cmake: "3.15"
- runs-on: ubuntu-20.04
arch: x64
@ -39,7 +39,7 @@ jobs:
- runs-on: macos-13
arch: x64
cmake: "3.8"
cmake: "3.15"
- runs-on: windows-2019
arch: x64 # x86 compilers seem to be missing on 2019 image

49
CMakeLists.txt
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@ -10,16 +10,7 @@ if(NOT CMAKE_VERSION VERSION_LESS "3.27")
cmake_policy(GET CMP0148 _pybind11_cmp0148)
endif()
cmake_minimum_required(VERSION 3.5)
# The `cmake_minimum_required(VERSION 3.5...3.29)` syntax does not work with
# some versions of VS that have a patched CMake 3.11. This forces us to emulate
# the behavior using the following workaround:
if(${CMAKE_VERSION} VERSION_LESS 3.29)
cmake_policy(VERSION ${CMAKE_MAJOR_VERSION}.${CMAKE_MINOR_VERSION})
else()
cmake_policy(VERSION 3.29)
endif()
cmake_minimum_required(VERSION 3.15...3.30)
if(_pybind11_cmp0148)
cmake_policy(SET CMP0148 ${_pybind11_cmp0148})
@ -27,9 +18,7 @@ if(_pybind11_cmp0148)
endif()
# Avoid infinite recursion if tests include this as a subdirectory
if(DEFINED PYBIND11_MASTER_PROJECT)
return()
endif()
include_guard(GLOBAL)
# Extract project version from source
file(STRINGS "${CMAKE_CURRENT_SOURCE_DIR}/include/pybind11/detail/common.h"
@ -74,14 +63,6 @@ if(CMAKE_SOURCE_DIR STREQUAL PROJECT_SOURCE_DIR)
set(PYBIND11_MASTER_PROJECT ON)
if(OSX AND CMAKE_VERSION VERSION_LESS 3.7)
# Bug in macOS CMake < 3.7 is unable to download catch
message(WARNING "CMAKE 3.7+ needed on macOS to download catch, and newer HIGHLY recommended")
elseif(WINDOWS AND CMAKE_VERSION VERSION_LESS 3.8)
# Only tested with 3.8+ in CI.
message(WARNING "CMAKE 3.8+ tested on Windows, previous versions untested")
endif()
message(STATUS "CMake ${CMAKE_VERSION}")
if(CMAKE_CXX_STANDARD)
@ -133,8 +114,7 @@ cmake_dependent_option(
"Install pybind11 headers in Python include directory instead of default installation prefix"
OFF "PYBIND11_INSTALL" OFF)
cmake_dependent_option(PYBIND11_FINDPYTHON "Force new FindPython" ${_pybind11_findpython_default}
"NOT CMAKE_VERSION VERSION_LESS 3.12" OFF)
option(PYBIND11_FINDPYTHON "Force new FindPython" ${_pybind11_findpython_default})
# Allow PYTHON_EXECUTABLE if in FINDPYTHON mode and building pybind11's tests
# (makes transition easier while we support both modes).
@ -183,7 +163,7 @@ set(PYBIND11_HEADERS
include/pybind11/typing.h)
# Compare with grep and warn if mismatched
if(PYBIND11_MASTER_PROJECT AND NOT CMAKE_VERSION VERSION_LESS 3.12)
if(PYBIND11_MASTER_PROJECT)
file(
GLOB_RECURSE _pybind11_header_check
LIST_DIRECTORIES false
@ -201,10 +181,7 @@ if(PYBIND11_MASTER_PROJECT AND NOT CMAKE_VERSION VERSION_LESS 3.12)
endif()
endif()
# CMake 3.12 added list(TRANSFORM <list> PREPEND
# But we can't use it yet
string(REPLACE "include/" "${CMAKE_CURRENT_SOURCE_DIR}/include/" PYBIND11_HEADERS
"${PYBIND11_HEADERS}")
list(TRANSFORM PYBIND11_HEADERS PREPEND "${CMAKE_CURRENT_SOURCE_DIR}/")
# Cache variable so this can be used in parent projects
set(pybind11_INCLUDE_DIR
@ -274,25 +251,11 @@ if(PYBIND11_INSTALL)
tools/${PROJECT_NAME}Config.cmake.in "${CMAKE_CURRENT_BINARY_DIR}/${PROJECT_NAME}Config.cmake"
INSTALL_DESTINATION ${PYBIND11_CMAKECONFIG_INSTALL_DIR})
if(CMAKE_VERSION VERSION_LESS 3.14)
# Remove CMAKE_SIZEOF_VOID_P from ConfigVersion.cmake since the library does
# not depend on architecture specific settings or libraries.
set(_PYBIND11_CMAKE_SIZEOF_VOID_P ${CMAKE_SIZEOF_VOID_P})
unset(CMAKE_SIZEOF_VOID_P)
write_basic_package_version_file(
${CMAKE_CURRENT_BINARY_DIR}/${PROJECT_NAME}ConfigVersion.cmake
VERSION ${PROJECT_VERSION}
COMPATIBILITY AnyNewerVersion)
set(CMAKE_SIZEOF_VOID_P ${_PYBIND11_CMAKE_SIZEOF_VOID_P})
else()
# CMake 3.14+ natively supports header-only libraries
# 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)
endif()
install(
FILES ${CMAKE_CURRENT_BINARY_DIR}/${PROJECT_NAME}Config.cmake

2
docs/advanced/cast/eigen.rst
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@ -259,7 +259,7 @@ copying to take place:
"small"_a // <- This one can be copied if needed
);
With the above binding code, attempting to call the the ``some_method(m)``
With the above binding code, attempting to call the ``some_method(m)``
method on a ``MyClass`` object, or attempting to call ``some_function(m, m2)``
will raise a ``RuntimeError`` rather than making a temporary copy of the array.
It will, however, allow the ``m2`` argument to be copied into a temporary if

2
docs/advanced/embedding.rst
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@ -18,7 +18,7 @@ information, see :doc:`/compiling`.
.. code-block:: cmake
cmake_minimum_required(VERSION 3.5...3.29)
cmake_minimum_required(VERSION 3.15...3.30)
project(example)
find_package(pybind11 REQUIRED) # or `add_subdirectory(pybind11)`

36
docs/compiling.rst
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@ -18,7 +18,7 @@ A Python extension module can be created with just a few lines of code:
.. code-block:: cmake
cmake_minimum_required(VERSION 3.15...3.29)
cmake_minimum_required(VERSION 3.15...3.30)
project(example LANGUAGES CXX)
set(PYBIND11_FINDPYTHON ON)
@ -319,11 +319,11 @@ Building with CMake
For C++ codebases that have an existing CMake-based build system, a Python
extension module can be created with just a few lines of code, as seen above in
the module section. Pybind11 currently supports a lower minimum if you don't
use the modern FindPython, though be aware that CMake 3.27 removed the old
mechanism, so pybind11 will automatically switch if the old mechanism is not
available. Please opt into the new mechanism if at all possible. Our default
may change in future versions. This is the minimum required:
the module section. Pybind11 currently defaults to the old mechanism, though be
aware that CMake 3.27 removed the old mechanism, so pybind11 will automatically
switch if the old mechanism is not available. Please opt into the new mechanism
if at all possible. Our default may change in future versions. This is the
minimum required:
@ -333,6 +333,9 @@ may change in future versions. This is the minimum required:
.. versionchanged:: 2.11
CMake 3.5+ is required.
.. versionchanged:: 2.14
CMake 3.15+ is required.
Further information can be found at :doc:`cmake/index`.
@ -388,7 +391,7 @@ that will be respected instead of the built-in flag search.
The ``OPT_SIZE`` flag enables size-based optimization equivalent to the
standard ``/Os`` or ``-Os`` compiler flags and the ``MinSizeRel`` build type,
which avoid optimizations that that can substantially increase the size of the
which avoid optimizations that can substantially increase the size of the
resulting binary. This flag is particularly useful in projects that are split
into performance-critical parts and associated bindings. In this case, we can
compile the project in release mode (and hence, optimize performance globally),
@ -444,7 +447,7 @@ See the `Config file`_ docstring for details of relevant CMake variables.
.. code-block:: cmake
cmake_minimum_required(VERSION 3.4...3.18)
cmake_minimum_required(VERSION 3.15...3.30)
project(example LANGUAGES CXX)
find_package(pybind11 REQUIRED)
@ -483,14 +486,13 @@ can refer to the same [cmake_example]_ repository for a full sample project
FindPython mode
---------------
CMake 3.12+ (3.15+ recommended, 3.18.2+ ideal) added a new module called
FindPython that had a highly improved search algorithm and modern targets
and tools. If you use FindPython, pybind11 will detect this and use the
existing targets instead:
Modern CMake (3.18.2+ ideal) added a new module called FindPython that had a
highly improved search algorithm and modern targets and tools. If you use
FindPython, pybind11 will detect this and use the existing targets instead:
.. code-block:: cmake
cmake_minimum_required(VERSION 3.15...3.22)
cmake_minimum_required(VERSION 3.15...3.30)
project(example LANGUAGES CXX)
find_package(Python 3.8 COMPONENTS Interpreter Development REQUIRED)
@ -541,7 +543,7 @@ available in all modes. The targets provided are:
Just the "linking" part of pybind11:module
``pybind11::module``
Everything for extension modules - ``pybind11::pybind11`` + ``Python::Module`` (FindPython CMake 3.15+) or ``pybind11::python_link_helper``
Everything for extension modules - ``pybind11::pybind11`` + ``Python::Module`` (FindPython) or ``pybind11::python_link_helper``
``pybind11::embed``
Everything for embedding the Python interpreter - ``pybind11::pybind11`` + ``Python::Python`` (FindPython) or Python libs
@ -568,7 +570,7 @@ You can use these targets to build complex applications. For example, the
.. code-block:: cmake
cmake_minimum_required(VERSION 3.5...3.29)
cmake_minimum_required(VERSION 3.15...3.30)
project(example LANGUAGES CXX)
find_package(pybind11 REQUIRED) # or add_subdirectory(pybind11)
@ -626,7 +628,7 @@ information about usage in C++, see :doc:`/advanced/embedding`.
.. code-block:: cmake
cmake_minimum_required(VERSION 3.5...3.29)
cmake_minimum_required(VERSION 3.15...3.30)
project(example LANGUAGES CXX)
find_package(pybind11 REQUIRED) # or add_subdirectory(pybind11)
@ -719,7 +721,7 @@ customizable pybind11-based wrappers by parsing C++ header files.
[litgen]_ is an automatic python bindings generator with a focus on generating
documented and discoverable bindings: bindings will nicely reproduce the documentation
found in headers. It is is based on srcML (srcml.org), a highly scalable, multi-language
found in headers. It is based on srcML (srcml.org), a highly scalable, multi-language
parsing tool with a developer centric approach. The API that you want to expose to python
must be C++14 compatible (but your implementation can use more modern constructs).

16
docs/faq.rst
View File

@ -258,9 +258,9 @@ CMake configure line. (Replace ``$(which python)`` with a path to python if
your prefer.)
You can alternatively try ``-DPYBIND11_FINDPYTHON=ON``, which will activate the
new CMake FindPython support instead of pybind11's custom search. Requires
CMake 3.12+, and 3.15+ or 3.18.2+ are even better. You can set this in your
``CMakeLists.txt`` before adding or finding pybind11, as well.
new CMake FindPython support instead of pybind11's custom search. Newer CMake,
like, 3.18.2+, is recommended. You can set this in your ``CMakeLists.txt``
before adding or finding pybind11, as well.
Inconsistent detection of Python version in CMake and pybind11
==============================================================
@ -281,11 +281,11 @@ There are three possible solutions:
from CMake and rely on pybind11 in detecting Python version. If this is not
possible, the CMake machinery should be called *before* including pybind11.
2. Set ``PYBIND11_FINDPYTHON`` to ``True`` or use ``find_package(Python
COMPONENTS Interpreter Development)`` on modern CMake (3.12+, 3.15+ better,
3.18.2+ best). Pybind11 in these cases uses the new CMake FindPython instead
of the old, deprecated search tools, and these modules are much better at
finding the correct Python. If FindPythonLibs/Interp are not available
(CMake 3.27+), then this will be ignored and FindPython will be used.
COMPONENTS Interpreter Development)`` on modern CMake ( 3.18.2+ best).
Pybind11 in these cases uses the new CMake FindPython instead of the old,
deprecated search tools, and these modules are much better at finding the
correct Python. If FindPythonLibs/Interp are not available (CMake 3.27+),
then this will be ignored and FindPython will be used.
3. Set ``PYBIND11_NOPYTHON`` to ``TRUE``. Pybind11 will not search for Python.
However, you will have to use the target-based system, and do more setup
yourself, because it does not know about or include things that depend on

2
include/pybind11/detail/common.h
View File

@ -554,7 +554,7 @@ enum class return_value_policy : uint8_t {
object without taking ownership similar to the above
return_value_policy::reference policy. In contrast to that policy, the
function or property's implicit this argument (called the parent) is
considered to be the the owner of the return value (the child).
considered to be the owner of the return value (the child).
pybind11 then couples the lifetime of the parent to the child via a
reference relationship that ensures that the parent cannot be garbage
collected while Python is still using the child. More advanced

30
pybind11/__main__.py
View File

@ -2,13 +2,35 @@
from __future__ import annotations
import argparse
import shlex
import re
import sys
import sysconfig
from ._version import __version__
from .commands import get_cmake_dir, get_include, get_pkgconfig_dir
# This is the conditional used for os.path being posixpath
if "posix" in sys.builtin_module_names:
from shlex import quote
elif "nt" in sys.builtin_module_names:
# See https://github.com/mesonbuild/meson/blob/db22551ed9d2dd7889abea01cc1c7bba02bf1c75/mesonbuild/utils/universal.py#L1092-L1121
# and the original documents:
# https://docs.microsoft.com/en-us/cpp/c-language/parsing-c-command-line-arguments and
# https://blogs.msdn.microsoft.com/twistylittlepassagesallalike/2011/04/23/everyone-quotes-command-line-arguments-the-wrong-way/
UNSAFE = re.compile("[ \t\n\r]")
def quote(s: str) -> str:
if s and not UNSAFE.search(s):
return s
# Paths cannot contain a '"' on Windows, so we don't need to worry
# about nuanced counting here.
return f'"{s}\\"' if s.endswith("\\") else f'"{s}"'
else:
def quote(s: str) -> str:
return s
def print_includes() -> None:
dirs = [
@ -23,7 +45,7 @@ def print_includes() -> None:
if d and d not in unique_dirs:
unique_dirs.append(d)
print(" ".join(shlex.quote(f"-I{d}") for d in unique_dirs))
print(" ".join(quote(f"-I{d}") for d in unique_dirs))
def main() -> None:
@ -55,9 +77,9 @@ def main() -> None:
if args.includes:
print_includes()
if args.cmakedir:
print(shlex.quote(get_cmake_dir()))
print(quote(get_cmake_dir()))
if args.pkgconfigdir:
print(shlex.quote(get_pkgconfig_dir()))
print(quote(get_pkgconfig_dir()))
if __name__ == "__main__":

42
tests/CMakeLists.txt
View File

@ -5,16 +5,7 @@
# All rights reserved. Use of this source code is governed by a
# BSD-style license that can be found in the LICENSE file.
cmake_minimum_required(VERSION 3.5)
# The `cmake_minimum_required(VERSION 3.5...3.29)` syntax does not work with
# some versions of VS that have a patched CMake 3.11. This forces us to emulate
# the behavior using the following workaround:
if(${CMAKE_VERSION} VERSION_LESS 3.29)
cmake_policy(VERSION ${CMAKE_MAJOR_VERSION}.${CMAKE_MINOR_VERSION})
else()
cmake_policy(VERSION 3.29)
endif()
cmake_minimum_required(VERSION 3.15...3.30)
# Filter out items; print an optional message if any items filtered. This ignores extensions.
#
@ -76,8 +67,8 @@ project(pybind11_tests CXX)
list(APPEND CMAKE_MODULE_PATH "${CMAKE_CURRENT_LIST_DIR}/../tools")
option(PYBIND11_WERROR "Report all warnings as errors" OFF)
option(DOWNLOAD_EIGEN "Download EIGEN (requires CMake 3.11+)" OFF)
option(PYBIND11_CUDA_TESTS "Enable building CUDA tests (requires CMake 3.12+)" OFF)
option(DOWNLOAD_EIGEN "Download EIGEN" OFF)
option(PYBIND11_CUDA_TESTS "Enable building CUDA tests" OFF)
set(PYBIND11_TEST_OVERRIDE
""
CACHE STRING "Tests from ;-separated list of *.cpp files will be built instead of all tests")
@ -250,25 +241,21 @@ endif()
if(PYBIND11_TEST_FILES_EIGEN_I GREATER -1)
# Try loading via newer Eigen's Eigen3Config first (bypassing tools/FindEigen3.cmake).
# Eigen 3.3.1+ exports a cmake 3.0+ target for handling dependency requirements, but also
# produces a fatal error if loaded from a pre-3.0 cmake.
if(DOWNLOAD_EIGEN)
if(CMAKE_VERSION VERSION_LESS 3.11)
message(FATAL_ERROR "CMake 3.11+ required when using DOWNLOAD_EIGEN")
if(CMAKE_VERSION VERSION_LESS 3.18)
set(_opts)
else()
set(_opts SOURCE_SUBDIR no-cmake-build)
endif()
include(FetchContent)
FetchContent_Declare(
eigen
GIT_REPOSITORY "${PYBIND11_EIGEN_REPO}"
GIT_TAG "${PYBIND11_EIGEN_VERSION_HASH}")
FetchContent_GetProperties(eigen)
if(NOT eigen_POPULATED)
message(
STATUS
"Downloading Eigen ${PYBIND11_EIGEN_VERSION_STRING} (${PYBIND11_EIGEN_VERSION_HASH}) from ${PYBIND11_EIGEN_REPO}"
)
FetchContent_Populate(eigen)
GIT_TAG "${PYBIND11_EIGEN_VERSION_HASH}"
${_opts})
FetchContent_MakeAvailable(eigen)
if(NOT CMAKE_VERSION VERSION_LESS 3.18)
set(EIGEN3_INCLUDE_DIR "${eigen_SOURCE_DIR}")
endif()
set(EIGEN3_INCLUDE_DIR ${eigen_SOURCE_DIR})
@ -316,8 +303,7 @@ if(PYBIND11_TEST_FILES_EIGEN_I GREATER -1)
if(PYBIND11_TEST_FILES_EIGEN_I GREATER -1)
list(REMOVE_AT PYBIND11_TEST_FILES ${PYBIND11_TEST_FILES_EIGEN_I})
endif()
message(
STATUS "Building tests WITHOUT Eigen, use -DDOWNLOAD_EIGEN=ON on CMake 3.11+ to download")
message(STATUS "Building tests WITHOUT Eigen, use -DDOWNLOAD_EIGEN=ON to download")
endif()
endif()
@ -502,12 +488,10 @@ foreach(target ${test_targets})
endforeach()
# Provide nice organisation in IDEs
if(NOT CMAKE_VERSION VERSION_LESS 3.8)
source_group(
TREE "${CMAKE_CURRENT_SOURCE_DIR}/../include"
PREFIX "Header Files"
FILES ${PYBIND11_HEADERS})
endif()
# Make sure pytest is found or produce a warning
pybind11_find_import(pytest VERSION 3.1)

1
tests/extra_python_package/test_files.py
View File

@ -9,7 +9,6 @@ import tarfile
import zipfile
# These tests must be run explicitly
# They require CMake 3.15+ (--install)
DIR = os.path.abspath(os.path.dirname(__file__))
MAIN_DIR = os.path.dirname(os.path.dirname(DIR))

4
tests/pyproject.toml
View File

@ -10,10 +10,6 @@ name = "pybind11_tests"
version = "0.0.1"
dependencies = ["pytest", "pytest-timeout", "numpy", "scipy"]
[tool.scikit-build]
# Hide a warning while we also support CMake < 3.15
cmake.version = ">=3.15"
[tool.scikit-build.cmake.define]
PYBIND11_FINDPYTHON = true

11
tests/test_cmake_build/installed_embed/CMakeLists.txt
View File

@ -1,13 +1,4 @@
cmake_minimum_required(VERSION 3.5)
# The `cmake_minimum_required(VERSION 3.5...3.29)` syntax does not work with
# some versions of VS that have a patched CMake 3.11. This forces us to emulate
# the behavior using the following workaround:
if(${CMAKE_VERSION} VERSION_LESS 3.29)
cmake_policy(VERSION ${CMAKE_MAJOR_VERSION}.${CMAKE_MINOR_VERSION})
else()
cmake_policy(VERSION 3.29)
endif()
cmake_minimum_required(VERSION 3.15...3.30)
project(test_installed_embed CXX)

12
tests/test_cmake_build/installed_function/CMakeLists.txt
View File

@ -1,14 +1,4 @@
cmake_minimum_required(VERSION 3.5)
project(test_installed_module CXX)
# The `cmake_minimum_required(VERSION 3.5...3.29)` syntax does not work with
# some versions of VS that have a patched CMake 3.11. This forces us to emulate
# the behavior using the following workaround:
if(${CMAKE_VERSION} VERSION_LESS 3.29)
cmake_policy(VERSION ${CMAKE_MAJOR_VERSION}.${CMAKE_MINOR_VERSION})
else()
cmake_policy(VERSION 3.29)
endif()
cmake_minimum_required(VERSION 3.15...3.30)
project(test_installed_function CXX)

11
tests/test_cmake_build/installed_target/CMakeLists.txt
View File

@ -1,13 +1,4 @@
cmake_minimum_required(VERSION 3.5)
# The `cmake_minimum_required(VERSION 3.5...3.29)` syntax does not work with
# some versions of VS that have a patched CMake 3.11. This forces us to emulate
# the behavior using the following workaround:
if(${CMAKE_VERSION} VERSION_LESS 3.29)
cmake_policy(VERSION ${CMAKE_MAJOR_VERSION}.${CMAKE_MINOR_VERSION})
else()
cmake_policy(VERSION 3.29)
endif()
cmake_minimum_required(VERSION 3.15...3.30)
project(test_installed_target CXX)

11
tests/test_cmake_build/subdirectory_embed/CMakeLists.txt
View File

@ -1,13 +1,4 @@
cmake_minimum_required(VERSION 3.5)
# The `cmake_minimum_required(VERSION 3.5...3.29)` syntax does not work with
# some versions of VS that have a patched CMake 3.11. This forces us to emulate
# the behavior using the following workaround:
if(${CMAKE_VERSION} VERSION_LESS 3.29)
cmake_policy(VERSION ${CMAKE_MAJOR_VERSION}.${CMAKE_MINOR_VERSION})
else()
cmake_policy(VERSION 3.29)
endif()
cmake_minimum_required(VERSION 3.15...3.30)
project(test_subdirectory_embed CXX)

11
tests/test_cmake_build/subdirectory_function/CMakeLists.txt
View File

@ -1,13 +1,4 @@
cmake_minimum_required(VERSION 3.5)
# The `cmake_minimum_required(VERSION 3.5...3.29)` syntax does not work with
# some versions of VS that have a patched CMake 3.11. This forces us to emulate
# the behavior using the following workaround:
if(${CMAKE_VERSION} VERSION_LESS 3.29)
cmake_policy(VERSION ${CMAKE_MAJOR_VERSION}.${CMAKE_MINOR_VERSION})
else()
cmake_policy(VERSION 3.29)
endif()
cmake_minimum_required(VERSION 3.15...3.30)
project(test_subdirectory_function CXX)

11
tests/test_cmake_build/subdirectory_target/CMakeLists.txt
View File

@ -1,13 +1,4 @@
cmake_minimum_required(VERSION 3.5)
# The `cmake_minimum_required(VERSION 3.5...3.29)` syntax does not work with
# some versions of VS that have a patched CMake 3.11. This forces us to emulate
# the behavior using the following workaround:
if(${CMAKE_VERSION} VERSION_LESS 3.29)
cmake_policy(VERSION ${CMAKE_MAJOR_VERSION}.${CMAKE_MINOR_VERSION})
else()
cmake_policy(VERSION 3.29)
endif()
cmake_minimum_required(VERSION 3.15...3.30)
project(test_subdirectory_target CXX)

43
tools/pybind11Common.cmake
View File

@ -18,11 +18,7 @@ Adds the following functions::
#]======================================================]
# CMake 3.10 has an include_guard command, but we can't use that yet
# include_guard(global) (pre-CMake 3.10)
if(TARGET pybind11::pybind11)
return()
endif()
include_guard(GLOBAL)
# If we are in subdirectory mode, all IMPORTED targets must be GLOBAL. If we
# are in CONFIG mode, they should be "normal" targets instead.
@ -80,9 +76,6 @@ set_property(
# Please open an issue if you need to use it; it will be removed if no one
# needs it.
if(CMAKE_SYSTEM_NAME MATCHES Emscripten AND NOT _pybind11_no_exceptions)
if(CMAKE_VERSION VERSION_LESS 3.13)
message(WARNING "CMake 3.13+ is required to build for Emscripten. Some flags will be missing")
else()
if(is_config)
set(_tmp_config_target pybind11::pybind11_headers)
else()
@ -99,28 +92,15 @@ if(CMAKE_SYSTEM_NAME MATCHES Emscripten AND NOT _pybind11_no_exceptions)
PROPERTY INTERFACE_COMPILE_OPTIONS -fexceptions)
unset(_tmp_config_target)
endif()
endif()
# --------------------------- link helper ---------------------------
add_library(pybind11::python_link_helper IMPORTED INTERFACE ${optional_global})
if(CMAKE_VERSION VERSION_LESS 3.13)
# In CMake 3.11+, you can set INTERFACE properties via the normal methods, and
# this would be simpler.
set_property(
TARGET pybind11::python_link_helper
APPEND
PROPERTY INTERFACE_LINK_LIBRARIES "$<$<PLATFORM_ID:Darwin>:-undefined dynamic_lookup>")
else()
# link_options was added in 3.13+
# This is safer, because you are ensured the deduplication pass in CMake will not consider
# these separate and remove one but not the other.
set_property(
TARGET pybind11::python_link_helper
APPEND
PROPERTY INTERFACE_LINK_OPTIONS "$<$<PLATFORM_ID:Darwin>:LINKER:-undefined,dynamic_lookup>")
endif()
# ------------------------ Windows extras -------------------------
@ -136,12 +116,6 @@ if(MSVC) # That's also clang-cl
# /MP enables multithreaded builds (relevant when there are many files) for MSVC
if("${CMAKE_CXX_COMPILER_ID}" STREQUAL "MSVC") # no Clang no Intel
if(CMAKE_VERSION VERSION_LESS 3.11)
set_property(
TARGET pybind11::windows_extras
APPEND
PROPERTY INTERFACE_COMPILE_OPTIONS $<$<NOT:$<CONFIG:Debug>>:/MP>)
else()
# Only set these options for C++ files. This is important so that, for
# instance, projects that include other types of source files like CUDA
# .cu files don't get these options propagated to nvcc since that would
@ -149,9 +123,7 @@ if(MSVC) # That's also clang-cl
set_property(
TARGET pybind11::windows_extras
APPEND
PROPERTY INTERFACE_COMPILE_OPTIONS
$<$<NOT:$<CONFIG:Debug>>:$<$<COMPILE_LANGUAGE:CXX>:/MP>>)
endif()
PROPERTY INTERFACE_COMPILE_OPTIONS $<$<NOT:$<CONFIG:Debug>>:$<$<COMPILE_LANGUAGE:CXX>:/MP>>)
endif()
endif()
@ -397,11 +369,7 @@ function(_pybind11_generate_lto target prefer_thin_lto)
set(is_debug "$<OR:$<CONFIG:Debug>,$<CONFIG:RelWithDebInfo>>")
set(not_debug "$<NOT:${is_debug}>")
set(cxx_lang "$<COMPILE_LANGUAGE:CXX>")
if(MSVC AND CMAKE_VERSION VERSION_LESS 3.11)
set(genex "${not_debug}")
else()
set(genex "$<AND:${not_debug},${cxx_lang}>")
endif()
set_property(
TARGET ${target}
APPEND
@ -416,18 +384,11 @@ function(_pybind11_generate_lto target prefer_thin_lto)
endif()
if(PYBIND11_LTO_LINKER_FLAGS)
if(CMAKE_VERSION VERSION_LESS 3.11)
set_property(
TARGET ${target}
APPEND
PROPERTY INTERFACE_LINK_LIBRARIES "$<${not_debug}:${PYBIND11_LTO_LINKER_FLAGS}>")
else()
set_property(
TARGET ${target}
APPEND
PROPERTY INTERFACE_LINK_OPTIONS "$<${not_debug}:${PYBIND11_LTO_LINKER_FLAGS}>")
endif()
endif()
endfunction()
if(NOT DEFINED CMAKE_INTERPROCEDURAL_OPTIMIZATION)

2
tools/pybind11GuessPythonExtSuffix.cmake
View File

@ -1,4 +1,4 @@
cmake_minimum_required(VERSION 3.5)
cmake_minimum_required(VERSION 3.15...3.30)
function(pybind11_guess_python_module_extension python)

5
tools/pybind11NewTools.cmake
View File

@ -5,10 +5,6 @@
# All rights reserved. Use of this source code is governed by a
# BSD-style license that can be found in the LICENSE file.
if(CMAKE_VERSION VERSION_LESS 3.12)
message(FATAL_ERROR "You cannot use the new FindPython module with CMake < 3.12")
endif()
include_guard(DIRECTORY)
get_property(
@ -236,7 +232,6 @@ if(TARGET ${_Python}::Python)
PROPERTY INTERFACE_LINK_LIBRARIES ${_Python}::Python)
endif()
# CMake 3.15+ has this
if(TARGET ${_Python}::Module)
set_property(
TARGET pybind11::module

25
tools/pybind11Tools.cmake
View File

@ -5,13 +5,7 @@
# All rights reserved. Use of this source code is governed by a
# BSD-style license that can be found in the LICENSE file.
# include_guard(global) (pre-CMake 3.10)
if(TARGET pybind11::python_headers)
return()
endif()
# Built-in in CMake 3.5+
include(CMakeParseArguments)
include_guard(GLOBAL)
if(pybind11_FIND_QUIETLY)
set(_pybind11_quiet QUIET)
@ -116,22 +110,6 @@ if(PYTHON_IS_DEBUG)
PROPERTY INTERFACE_COMPILE_DEFINITIONS Py_DEBUG)
endif()
# The <3.11 code here does not support release/debug builds at the same time, like on vcpkg
if(CMAKE_VERSION VERSION_LESS 3.11)
set_property(
TARGET pybind11::module
APPEND
PROPERTY
INTERFACE_LINK_LIBRARIES
pybind11::python_link_helper
"$<$<OR:$<PLATFORM_ID:Windows>,$<PLATFORM_ID:Cygwin>>:$<BUILD_INTERFACE:${PYTHON_LIBRARIES}>>"
)
set_property(
TARGET pybind11::embed
APPEND
PROPERTY INTERFACE_LINK_LIBRARIES pybind11::pybind11 $<BUILD_INTERFACE:${PYTHON_LIBRARIES}>)
else()
# The IMPORTED INTERFACE library here is to ensure that "debug" and "release" get processed outside
# of a generator expression - https://gitlab.kitware.com/cmake/cmake/-/issues/18424, as they are
# target_link_library keywords rather than real libraries.
@ -145,7 +123,6 @@ else()
target_link_libraries(pybind11::embed INTERFACE pybind11::pybind11
pybind11::_ClassicPythonLibraries)
endif()
function(pybind11_extension name)
# The prefix and extension are provided by FindPythonLibsNew.cmake

2
tools/test-pybind11GuessPythonExtSuffix.cmake
View File

@ -1,4 +1,4 @@
cmake_minimum_required(VERSION 3.5)
cmake_minimum_required(VERSION 3.15...3.30)
# Tests for pybind11_guess_python_module_extension
# Run using `cmake -P tools/test-pybind11GuessPythonExtSuffix.cmake`