9ffb35386f
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
14 lines
519 B
CMake
14 lines
519 B
CMake
if("x${CMAKE_GENERATOR_INSTANCE}" STREQUAL "x")
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message(FATAL_ERROR "CMAKE_GENERATOR_INSTANCE is empty but should have a value.")
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elseif("x${CMAKE_GENERATOR_INSTANCE}" MATCHES [[\\]])
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message(FATAL_ERROR
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"CMAKE_GENERATOR_INSTANCE is\n"
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" ${CMAKE_GENERATOR_INSTANCE}\n"
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"which contains a backslash.")
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elseif(NOT IS_DIRECTORY "${CMAKE_GENERATOR_INSTANCE}")
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message(FATAL_ERROR
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"CMAKE_GENERATOR_INSTANCE is\n"
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" ${CMAKE_GENERATOR_INSTANCE}\n"
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"which is not an existing directory.")
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endif()
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