https://github.com/Kitware/CMake
Revision 1c14691a86ab8c6939dd04707dc2a92125fa8629 authored by Raul Tambre on 07 February 2021, 09:27:21 UTC, committed by Brad King on 09 July 2021, 15:27:47 UTC
Clang does not define `__STDC__` if in MSVC compatibility mode, but does define `__STDC_VERSION__`. Avoid the fallback for this combination. This backports commit 7596d8b951 (CMakeCCompilerId: Fix C standard detection in Clang MSVC mode, 2021-02-07, v3.21.0-rc1~587^2~14) to the 3.20 release series. This is needed since commit 5115dd1e2c (IntelLLVM: Fix C/C++ standard level flags on Windows, 2021-07-07, v3.21.0-rc3~7^2^2) now that we activate C/C++ standard level logic for IntelLLVM when targeting the MSVC ABI.
1 parent 5115dd1
Tip revision: 1c14691a86ab8c6939dd04707dc2a92125fa8629 authored by Raul Tambre on 07 February 2021, 09:27:21 UTC
CMakeCCompilerId: Fix C standard detection in Clang and IntelLLVM MSVC mode
CMakeCCompilerId: Fix C standard detection in Clang and IntelLLVM MSVC mode
Tip revision: 1c14691
README.rst
CMake
*****
Introduction
============
CMake is a cross-platform, open-source build system generator.
For full documentation visit the `CMake Home Page`_ and the
`CMake Documentation Page`_. The `CMake Community Wiki`_ also
references useful guides and recipes.
.. _`CMake Home Page`: https://cmake.org
.. _`CMake Documentation Page`: https://cmake.org/documentation
.. _`CMake Community Wiki`: https://gitlab.kitware.com/cmake/community/-/wikis/home
CMake is maintained and supported by `Kitware`_ and developed in
collaboration with a productive community of contributors.
.. _`Kitware`: http://www.kitware.com/cmake
License
=======
CMake is distributed under the OSI-approved BSD 3-clause License.
See `Copyright.txt`_ for details.
.. _`Copyright.txt`: Copyright.txt
Building CMake
==============
Supported Platforms
-------------------
* Microsoft Windows
* Apple macOS
* Linux
* FreeBSD
* OpenBSD
* Solaris
* AIX
Other UNIX-like operating systems may work too out of the box, if not
it should not be a major problem to port CMake to this platform.
Please post to the `CMake Discourse Forum`_ to ask if others have
had experience with the platform.
.. _`CMake Discourse Forum`: https://discourse.cmake.org
Building CMake from Scratch
---------------------------
UNIX/Mac OSX/MinGW/MSYS/Cygwin
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
You need to have a C++ compiler (supporting C++11) and a ``make`` installed.
Run the ``bootstrap`` script you find in the source directory of CMake.
You can use the ``--help`` option to see the supported options.
You may use the ``--prefix=<install_prefix>`` option to specify a custom
installation directory for CMake. Once this has finished successfully,
run ``make`` and ``make install``.
For example, if you simply want to build and install CMake from source,
you can build directly in the source tree::
$ ./bootstrap && make && sudo make install
Or, if you plan to develop CMake or otherwise run the test suite, create
a separate build tree::
$ mkdir cmake-build && cd cmake-build
$ ../cmake-source/bootstrap && make
Windows
^^^^^^^
There are two ways for building CMake under Windows:
1. Compile with MSVC from VS 2015 or later.
You need to download and install a binary release of CMake. You can get
these releases from the `CMake Download Page`_. Then proceed with the
instructions below for `Building CMake with CMake`_.
2. Bootstrap with MinGW under MSYS2.
Download and install `MSYS2`_. Then install the required build tools::
$ pacman -S --needed git base-devel mingw-w64-x86_64-gcc
and bootstrap as above.
.. _`CMake Download Page`: https://cmake.org/download
.. _`MSYS2`: https://www.msys2.org/
Building CMake with CMake
-------------------------
You can build CMake as any other project with a CMake-based build system:
run the installed CMake on the sources of this CMake with your preferred
options and generators. Then build it and install it.
For instructions how to do this, see documentation on `Running CMake`_.
.. _`Running CMake`: https://cmake.org/runningcmake
To build the documentation, install `Sphinx`_ and configure CMake with
``-DSPHINX_HTML=ON`` and/or ``-DSPHINX_MAN=ON`` to enable the "html" or
"man" builder. Add ``-DSPHINX_EXECUTABLE=/path/to/sphinx-build`` if the
tool is not found automatically.
.. _`Sphinx`: http://sphinx-doc.org
Reporting Bugs
==============
If you have found a bug:
1. If you have a patch, please read the `CONTRIBUTING.rst`_ document.
2. Otherwise, please post to the `CMake Discourse Forum`_ and ask about
the expected and observed behaviors to determine if it is really
a bug.
3. Finally, if the issue is not resolved by the above steps, open
an entry in the `CMake Issue Tracker`_.
.. _`CMake Issue Tracker`: https://gitlab.kitware.com/cmake/cmake/-/issues
Contributing
============
See `CONTRIBUTING.rst`_ for instructions to contribute.
.. _`CONTRIBUTING.rst`: CONTRIBUTING.rst
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