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CMake/Help/variable/CMAKE_SYSTEM_VERSION.rst

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Convert builtin help to reStructuredText source files Run the convert-help.bash script to convert documentation: ./convert-help.bash "/path/to/CMake-build/bin" Then remove it.
2013-10-15 19:17:36 +04:00
CMAKE_SYSTEM_VERSION
--------------------
Help: Improve CMAKE_SYSTEM_{NAME,VERSION} variable documentation Specify their meaning for host builds and when cross compiling. Sepcify their relationship in each case.
2015-10-02 16:36:52 +03:00
The version of the operating system for which CMake is to build.
See the :variable:`CMAKE_SYSTEM_NAME` variable for the OS name.
Convert builtin help to reStructuredText source files Run the convert-help.bash script to convert documentation: ./convert-help.bash "/path/to/CMake-build/bin" Then remove it.
2013-10-15 19:17:36 +04:00
Help: Improve CMAKE_SYSTEM_{NAME,VERSION} variable documentation Specify their meaning for host builds and when cross compiling. Sepcify their relationship in each case.
2015-10-02 16:36:52 +03:00
System Version for Host Builds
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
When the :variable:`CMAKE_SYSTEM_NAME` variable takes its default value
then ``CMAKE_SYSTEM_VERSION`` is by default set to the same value as the
:variable:`CMAKE_HOST_SYSTEM_VERSION` variable so that the build targets
the host system version.
Allow CMAKE_SYSTEM_VERSION to be set without CMAKE_SYSTEM_NAME Teach CMakeDetermineSystem to check for a CMAKE_SYSTEM_VERSION setting even when CMAKE_SYSTEM_NAME is not set. This will allow builds on the host OS to target other versions of the OS without full cross-compiling.
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In the case of a host build then ``CMAKE_SYSTEM_VERSION`` may be set
explicitly when first configuring a new build tree in order to enable
targeting the build for a different version of the host operating system
than is actually running on the host. This is allowed and not considered
cross compiling so long as the binaries built for the specified OS version
can still run on the host.
Help: Improve CMAKE_SYSTEM_{NAME,VERSION} variable documentation Specify their meaning for host builds and when cross compiling. Sepcify their relationship in each case.
2015-10-02 16:36:52 +03:00
System Version for Cross Compiling
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
When the :variable:`CMAKE_SYSTEM_NAME` variable is set explicitly to
enable :ref:`cross compiling <Cross Compiling Toolchain>` then the
value of ``CMAKE_SYSTEM_VERSION`` must also be set explicitly to specify
the target system version.