Intel-CXX.cmake needs update to handle C++20 (support starts at 19.0)
At Modules/Compiler/Intel-CXX.cmake, just needs:
if (NOT CMAKE_CXX_COMPILER_VERSION VERSION_LESS 19.0.0)
set(CMAKE_CXX20_STANDARD_COMPILE_OPTION "-Qstd=c++20")
set(CMAKE_CXX20_EXTENSION_COMPILE_OPTION "-Qstd=c++20")
endif()
And:
if (NOT CMAKE_CXX_COMPILER_VERSION VERSION_LESS 19.0.0)
set(CMAKE_CXX20_STANDARD_COMPILE_OPTION "-std=c++20")
set(CMAKE_CXX20_EXTENSION_COMPILE_OPTION "-std=gnu++20")
endif()
Edited by Matheus Izvekov