yaxunl added a comment. In D127142#3571260 <https://reviews.llvm.org/D127142#3571260>, @MaskRay wrote:
> In D127142#3570290 <https://reviews.llvm.org/D127142#3570290>, @yaxunl wrote: > >> If I use --rtlib=compiler-rt, does that also requires --unwindlib=unwindlib ? > > No. --unwindlib=libunwind requires --rtlib=compiler-rt. --rtlib=compiler-rt > is compatible with both --unwindlib=libgcc and --unwindlib=libunwind. If only use -rtlib=compiler-rt without changing unwind lib, I will get missing symbol: [2022-06-16T20:05:28.644Z] ld.lld: error: undefined symbol: _Unwind_Resume [2022-06-16T20:05:28.644Z] >>> referenced by main.cpp [2022-06-16T20:05:28.644Z] >>> CMakeFiles/MIOpenDriver.dir/main.cpp.o:(generate_skipahead_file()) [2022-06-16T20:05:28.644Z] >>> referenced by main.cpp [2022-06-16T20:05:28.644Z] >>> CMakeFiles/MIOpenDriver.dir/main.cpp.o:(main) [2022-06-16T20:05:28.644Z] >>> referenced by main.cpp [2022-06-16T20:05:28.644Z] >>> CMakeFiles/MIOpenDriver.dir/main.cpp.o:(std::function<void (float&, float, bool&)> reduce::ReduceOpFn2<float>(miopenReduceTensorOp_t)) [2022-06-16T20:05:28.644Z] >>> referenced 1246 more times [2022-06-16T20:05:28.644Z] [2022-06-16T20:05:28.644Z] ld.lld: error: ../lib/libMIOpen.so.1.0.50300: undefined reference to _Unwind_Resume [--no-allow-shlib-undefined] [2022-06-16T20:05:28.644Z] ld.lld: error: ../lib/libMIOpen.so.1.0.50300: undefined reference to _Unwind_Backtrace [--no-allow-shlib-undefined] [2022-06-16T20:05:28.644Z] ld.lld: error: ../lib/libMIOpen.so.1.0.50300: undefined reference to _Unwind_GetIP [--no-allow-shlib-undefined] [2022-06-16T20:05:28.644Z] clang-15: error: linker command failed with exit code 1 (use -v to see invocation) CHANGES SINCE LAST ACTION https://reviews.llvm.org/D127142/new/ https://reviews.llvm.org/D127142 _______________________________________________ cfe-commits mailing list cfe-commits@lists.llvm.org https://lists.llvm.org/cgi-bin/mailman/listinfo/cfe-commits
