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[HIP] configure.py --hip names the AMD libclc target "amdgcn-amd-amdhsa-llvm", but sycl/CMakeLists.txt requires "amdgcn-amd-amdhsa"

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Assessment

Difficulty
2/5
Estimated time
1-3 hours
Newbie friendliness
67/100
Issue type
Bug
Clarity
Clearly specified
Activity status
Active
Tech stack
cmake, cpp
Domain
backend, build-system

Research direction

Read configure.py around the libclc_amd_target_names setting and the LLVM runtime target arguments, then compare with the libclc target check in sycl/CMakeLists.txt around lines 619–623. Make the AMD target name consistent so --hip configuration succeeds; verify by reproducing the reported configure command on an AMD HIP setup.

Written by the indexing model from the issue text.

Description

bug hip
Describe the bug

Configuring with buildbot/configure.py --hip (default --hip-platform AMD) fails, because the script and the SYCL CMake check use different names for the AMD libclc runtime target.

  • buildbot/configure.py (line 32) sets libclc_amd_target_names = ";amdgcn-amd-amdhsa-llvm" and adds it to LLVM_RUNTIME_TARGETS (lines 93-96, 254-266).
  • sycl/CMakeLists.txt (lines 619-623) requires the plain triple:
if("hip" IN_LIST SYCL_ENABLE_BACKENDS)
  if(NOT ("amdgcn-amd-amdhsa" IN_LIST libclc_targets))
    message(FATAL_ERROR "HIP support requires building \"libclc\" for the AMDGCN target")

libclc_targets comes from get_targets_building_llvm_runtime(libclc ...), so it contains amdgcn-amd-amdhsa-llvm, the check fails, and configure stops.

To reproduce

On Ubuntu 22.04 x86_64 with ROCm 7.0 (hip-dev, rocm-device-libs) installed:

git clone https://github.com/intel/llvm && cd llvm
git checkout dfcf0080a27749a5c8c73b9d83658593726b01ea   # nightly-2026-10-14
python3 buildbot/configure.py --hip --cmake-opt=-DUR_HIP_ROCM_DIR=/opt/rocm

Expected: configure succeeds and builds libclc for AMDGCN.
Actual: configure stops at sycl/CMakeLists.txt:622.

Workaround (later -D options win):

python3 buildbot/configure.py --hip --cmake-opt=-DUR_HIP_ROCM_DIR=/opt/rocm \
  "--cmake-opt=-DLLVM_RUNTIME_TARGETS=default;amdgcn-amd-amdhsa;spirv64-unknown-unknown" \
  --cmake-opt=-DRUNTIMES_amdgcn-amd-amdhsa_LLVM_ENABLE_RUNTIMES=libclc

With this the toolchain builds, libur_adapter_hip.so is installed, and SYCL programs run correctly on an AMD Instinct MI350X (gfx950).

Suggested fix: use one name in both places: either amdgcn-amd-amdhsa in configure.py, or accept the -llvm variant in the CMake check.

Environment
  • OS: Ubuntu 22.04 x86_64
  • ROCm 7.0 (apt packages), CMake 3.x, Ninja
  • intel/llvm nightly-2026-10-14 (dfcf0080a27749a5c8c73b9d83658593726b01ea); lines unchanged on sycl as of 2026-10-18
Additional context

As far as I can tell no intel/llvm CI job configures with --hip, which may be why this went unnoticed. A related problem in the driver's libspirv lookup comes up after this one is worked around; I'll file it separately. The full build script with both workarounds: https://github.com/checocadena/oneapi-agent-toolkit/blob/main/scripts/build-sycl-hip.sh

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