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GPU CMake: Force using alidist GCC for host compilation of CUDA/HIP code #14581

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Merged
davidrohr merged 1 commit into from
Aug 25, 2025
Merged

GPU CMake: Force using alidist GCC for host compilation of CUDA/HIP code #14581

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10 changes: 9 additions & 1 deletion dependencies/FindO2GPU.cmake
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Original file line number Diff line number Diff line change
Expand Up @@ -10,7 +10,7 @@
# or submit itself to any jurisdiction.

# NOTE!!!! - Whenever this file is changed, move it over to alidist/resources
# FindO2GPU.cmake Version 1
# FindO2GPU.cmake Version 2

if(NOT DEFINED ENABLE_CUDA)
set(ENABLE_CUDA "AUTO")
Expand Down Expand Up @@ -125,6 +125,8 @@ if(ENABLE_CUDA)
if(GPUCA_CUDA_GCCBIN)
message(STATUS "Using as CUDA GCC version: ${GPUCA_CUDA_GCCBIN}")
set(CMAKE_CUDA_HOST_COMPILER "${GPUCA_CUDA_GCCBIN}")
elseif(DEFINED ENV{GCC_TOOLCHAIN_ROOT})
set(CMAKE_CUDA_HOST_COMPILER "$ENV{GCC_TOOLCHAIN_ROOT}/bin/gcc")
endif()
enable_language(CUDA)
get_property(LANGUAGES GLOBAL PROPERTY ENABLED_LANGUAGES)
Expand Down Expand Up @@ -278,6 +280,12 @@ if(ENABLE_HIP)
endif()
endif()
if (CMAKE_HIP_COMPILER)
if(GPUCA_HIP_GCCBIN)
message(STATUS "Using as HIP GCC version: ${GPUCA_HIP_GCCBIN}")
set(CMAKE_HIP_HOST_COMPILER "${GPUCA_HIP_GCCBIN}")
elseif(DEFINED ENV{GCC_TOOLCHAIN_ROOT})
set(CMAKE_HIP_HOST_COMPILER "$ENV{GCC_TOOLCHAIN_ROOT}/bin/gcc")
endif()
enable_language(HIP)
message(STATUS "HIP language enabled: ${CMAKE_HIP_COMPILER}")
endif()
Expand Down