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Visual Studio 2017 supports multiple instances installed on a single machine. We use the Visual Studio Installer tool to enumerate instances and select one. Once we select an instance for a given build tree, save the result in `CMAKE_GENERATOR_INSTANCE` so we can re-configure the tree with the same instance on future re-runs of CMake. Fixes: #17268
42 lines
1.5 KiB
ReStructuredText
42 lines
1.5 KiB
ReStructuredText
Visual Studio 15 2017
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---------------------
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Generates Visual Studio 15 (VS 2017) project files.
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The :variable:`CMAKE_GENERATOR_PLATFORM` variable may be set
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to specify a target platform name (architecture).
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For compatibility with CMake versions prior to 3.1, one may specify
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a target platform name optionally at the end of this generator name:
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``Visual Studio 15 2017 Win64``
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Specify target platform ``x64``.
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``Visual Studio 15 2017 ARM``
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Specify target platform ``ARM``.
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Instance Selection
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^^^^^^^^^^^^^^^^^^
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VS 2017 supports multiple installations on the same machine.
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The :variable:`CMAKE_GENERATOR_INSTANCE` variable may be set as a
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cache entry containing the absolute path to a Visual Studio instance.
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If the value is not specified explicitly by the user or a toolchain file,
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CMake queries the Visual Studio Installer to locate VS instances, chooses
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one, and sets the variable as a cache entry to hold the value persistently.
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When CMake first chooses an instance, if the ``VS150COMNTOOLS`` environment
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variable is set and points to the ``Common7/Tools`` directory within
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one of the instances, that instance will be used. Otherwise, if more
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than one instance is installed we do not define which one is chosen
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by default.
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Toolset Selection
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^^^^^^^^^^^^^^^^^
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The ``v141`` toolset that comes with Visual Studio 15 2017 is selected by
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default. The :variable:`CMAKE_GENERATOR_TOOLSET` option may be set, perhaps
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via the :manual:`cmake(1)` ``-T`` option, to specify another toolset.
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.. include:: VS_TOOLSET_HOST_ARCH.txt
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