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Document CMAKE_CXX_STANDARD

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This variable is a CMake community standard to set the C++
standard of a build. Document it in favor of the previous variable,
which stays as a legacy flag for existing projects.

https://cmake.org/cmake/help/v3.17/variable/CMAKE_CXX_STANDARD.html
This commit is contained in:
Axel Huebl 2020-04-25 18:10:53 -07:00 committed by Wenzel Jakob
parent d730fbc0d5
commit 6ebfc4b2b0
2 changed files with 6 additions and 10 deletions
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12
docs/compiling.rst
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@ -105,18 +105,14 @@ on the target compiler, falling back to C++11 if C++14 support is not
available. Note, however, that this default is subject to change: future
pybind11 releases are expected to migrate to newer C++ standards as they become
available. To override this, the standard flag can be given explicitly in
``PYBIND11_CPP_STANDARD``:
`CMAKE_CXX_STANDARD <https://cmake.org/cmake/help/v3.17/variable/CMAKE_CXX_STANDARD.html>`_:
.. code-block:: cmake
# Use just one of these:
# GCC/clang:
set(PYBIND11_CPP_STANDARD -std=c++11)
set(PYBIND11_CPP_STANDARD -std=c++14)
set(PYBIND11_CPP_STANDARD -std=c++1z) # Experimental C++17 support
# MSVC:
set(PYBIND11_CPP_STANDARD /std:c++14)
set(PYBIND11_CPP_STANDARD /std:c++latest) # Enables some MSVC C++17 features
set(CMAKE_CXX_STANDARD 11)
set(CMAKE_CXX_STANDARD 14)
set(CMAKE_CXX_STANDARD 17) # Experimental C++17 support
add_subdirectory(pybind11) # or find_package(pybind11)

4
tools/pybind11Config.cmake.in
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@ -28,8 +28,8 @@
#
# Python headers, libraries (as needed by platform), and the C++ standard
# are attached to the target. Set PythonLibsNew variables to influence
# python detection and PYBIND11_CPP_STANDARD (-std=c++11 or -std=c++14) to
# influence standard setting. ::
# python detection and CMAKE_CXX_STANDARD (11 or 14) to influence standard
# setting. ::
#
# find_package(pybind11 CONFIG REQUIRED)
# message(STATUS "Found pybind11 v${pybind11_VERSION}: ${pybind11_INCLUDE_DIRS}")