[llvm-dev] OpenMP Error in Clang (original) (raw)
Johannes Doerfert via llvm-dev llvm-dev at lists.llvm.org
Wed May 27 07:35:05 PDT 2020
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On 5/27/20 5:44 AM, Michael Kruse via llvm-dev wrote:
I don't see what the difference is between the two command lines is. However,
Me neither.
1. the option is "clang -fopenmp" (without -Xclang, which is for options for the -cc1 invocation)
Right. If you don't use the driver option you need to manage your include and library paths yourself.
Does clang -fopenmp test.c work for you?
2. omp.h is part of the openmp subproject, it must be enabled (-DLLVMENABLEPROJECTS=openmp) and omp.h found in the include path. Michael
Am Di., 26. Mai 2020 um 20:29 Uhr schrieb Chatterjee, Bodhisatwa via llvm-dev <llvm-dev at lists.llvm.org>: Hello,
I am getting the following error while trying to build a benchmark with a custom function pass: clang -Xclang -fopenmp=libomp -Xclang -load -Xclang mylib.so file.c
error: unknown argument: '-fopenmp=libomp' If I use this instead: clang -Xclang -fopenmp=libomp -Xclang -load -Xclang mylib.so file.c I get the error: fatal error: 'omp.h' file not found I am not sure where the problem is, especially since I have used OpenMP applications with llvm before. Thanks, Bodhi
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