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ROCm
Error and warnings when generating depfiles
I suppose I cannot just use ordinary clang to do this.
$ hipcc -MM -MP -MF test.d test.cpp -MT test.d -MT test.o
clang-15: warning: -lgcc_s: 'linker' input unused [-Wunused-command-line-argument]
clang-15: warning: -lgcc: 'linker' input unused [-Wunused-command-line-argument]
clang-15: warning: -lpthread: 'linker' input unused [-Wunused-command-line-argument]
clang-15: warning: -lm: 'linker' input unused [-Wunused-command-line-argument]
clang-15: warning: -lrt: 'linker' input unused [-Wunused-command-line-argument]
clang-15: warning: -Wl,--enable-new-dtags: 'linker' input unused [-Wunused-command-line-argument]
clang-15: warning: -Wl,-rpath=/opt/rocm-5.3.0/lib:/opt/rocm-5.3.0/lib: 'linker' input unused [-Wunused-command-line-argument]
clang-15: warning: -lamdhip64: 'linker' input unused [-Wunused-command-line-argument]
clang-15: warning: -lclang_rt.builtins-x86_64: 'linker' input unused [-Wunused-command-line-argument]
/opt/rocm-5.3.0/llvm/bin/clang-offload-bundler: error: '/tmp/test-181823/test-gfx900.d': No such file or directory
clang-15: error: clang-offload-bundler command failed with exit code 1 (use -v to see invocation)
there is a bug in hipcc which does not handle -MM properly even though -M is handled.
The workaround is to use -M -MM
This workaround does not work when trying to use rocm 5.3 clang++ directly:
$ /opt/rocm/llvm/bin/clang++ -x hip -M -MM -MP -MF test.d test.cpp -MT test.d -MT test.o
/opt/rocm/llvm/bin/clang-offload-bundler: error: '/tmp/test-a6d293/test-gfx803.d': No such file or directory
clang-15: error: clang-offload-bundler command failed with exit code 1 (use -v to see invocation)
it needs hipcc.
If you use clang directly, you need to add --cuda-host-only -c
The proper fix of this issue would require clang driver to parse and merge dependence files for CPU and each GPU. It would take some time and efforts. However I think eventually it should be fixed.
Just to note it worked with hcc (at least it did not require any additional flags).
@misos1 Hi, is your issue resolved on the latest HIP? If so can we close this ticket?
