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Description:

Whenever building Visual Studio 2022 projects with set(CMAKE_CXX_COMPILER "icx") and set(CMAKE_GENERATOR_TOOLSET "Intel C++ Compiler 2022"), I get the following errors:

The CMAKE_CXX_COMPILER: icx is not a full path and was not found in the PATH, and No CMAKE_C_COMPILER could be found.

Previously, with oneAPI versions 2021.1.0 - 2021.4.0, this method did work and the CMAKE_CXX_COMPILER variable was set to the proper path for the platform toolset to be set properly in Visual Studio.

I have attached a .cpp file, and a CMakeLists.txt that produces these results.

main.cpp

CMakeLists.txt

CMakeLists.txt

#Set the minimum required version of CMake.
cmake_minimum_required(VERSION 3.22.1)

option(INTEL_COMPILER "Do you want to used the Intel C++ Compiler 2022?" ON)

set(CMAKE_CXX_STANDARD 17)
set(CMAKE_CXX_STANDARD_REQUIRED True)

if(INTEL_COMPILER)
    if(WIN32)
        if(${CMAKE_GENERATOR} MATCHES "Visual Studio")
            set(CMAKE_GENERATOR_TOOLSET "Intel C++ Compiler 2022")
            set(CMAKE_CXX_COMPILER "icx")
        endif()

        add_compile_options(/fp:precise)

    else()

        set(CMAKE_C_COMPILER "icx")
        set(CMAKE_CXX_COMPILER "icpx")

        add_compile_options(-fp-model=precise)

    endif()
endif()

project(ICXTest)

add_executable(${PROJECT_NAME} "main.cpp")

What I Tested:

If you define CMAKE_CXX_COMPILER as the path to icx.exe, the project gets built properly.

Additionally, whenever using CMake on Linux with set(CMAKE_CXX_COMPILER "icpx") and set(CMAKE_C_COMPILER "icx") the code does get built properly.

Ideas:

• Does this have something to do with id_PostBuildEvent_Command in Modules/CMakeDetermineCompilerID.cmake?
• Does this have something to do with Modules/CompilerId/VS-10.vcxproj.in?
• The Intel oneAPI release notes mention some binaries not being added to path, could this be related?