CMAKE_COMPILER_IS_GNUCC

From Get docs
Cmake/docs/3.21/variable/cmake compiler is gnucc


CMAKE_COMPILER_IS_GNUCC

New in version 3.7.


True if the C compiler is GNU. Use CMAKE_C_COMPILER_ID instead.

© 2000–2021 Kitware, Inc. and Contributors
Licensed under the BSD 3-clause License.
https://cmake.org/cmake/help/v3.21/variable/CMAKE_COMPILER_IS_GNUCC.html