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Diffstat (limited to 'share/cmake-3.5/Help/variable/CMAKE_SYSTEM_VERSION.rst')
| -rwxr-xr-x | share/cmake-3.5/Help/variable/CMAKE_SYSTEM_VERSION.rst | 28 |
1 files changed, 28 insertions, 0 deletions
diff --git a/share/cmake-3.5/Help/variable/CMAKE_SYSTEM_VERSION.rst b/share/cmake-3.5/Help/variable/CMAKE_SYSTEM_VERSION.rst new file mode 100755 index 0000000..aba8ca3 --- /dev/null +++ b/share/cmake-3.5/Help/variable/CMAKE_SYSTEM_VERSION.rst @@ -0,0 +1,28 @@ +CMAKE_SYSTEM_VERSION +-------------------- + +The version of the operating system for which CMake is to build. +See the :variable:`CMAKE_SYSTEM_NAME` variable for the OS name. + +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. + +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. + +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. |