New in version 3.15.
This is a CMake Environment Variable. Its initial value is taken from the calling process environment.
Default value for CMAKE_GENERATOR_TOOLSET if no Cache entry is present and no value is specified by cmake(1) -T option. This value is only applied if CMAKE_GENERATOR is set.
© 2000–2020 Kitware, Inc. and Contributors
Licensed under the BSD 3-clause License.
https://cmake.org/cmake/help/v3.19/envvar/CMAKE_GENERATOR_TOOLSET.html