error compiling muktisource example

[Daniel White]

Hi folks,

I'm trying the multisource example from https://github.com/EnzymeAD/Enzyme-Tutorial, and I am getting this error:

Error opening '/usr/workspace/wsa/dwhite/Enzyme/enzyme/build/Enzyme/ClangEnzyme-12.so': /usr/workspace/wsa/dwhite/Enzyme/enzyme/build/Enzyme/ClangEnzyme-12.so: undefined symbol: _ZN5clang17ASTFrontendAction13ExecuteActionEv
  -load request ignored.

Note I can build and run other examples, but this example isn't working. My makescript is shown below:

echo 'compiling myblas.c ...'
/usr/tce/packages/mvapich2/mvapich2-2.3.6-clang-12.0.1/bin/mpicxx  -g -Wall -std=c++11 -fno-experimental-new-pass-manager -c -fuse-ld=lld -flto myblas.c -o myblas.o
echo 'compiling multisource.c ...'
/usr/tce/packages/mvapich2/mvapich2-2.3.6-clang-12.0.1/bin/mpicxx  -g -Wall -std=c++11 -fno-experimental-new-pass-manager -c -fuse-ld=lld -flto multisource.c -o multisource.o
echo 'linking ...'
/usr/tce/packages/mvapich2/mvapich2-2.3.6-clang-12.0.1/bin/mpicxx -fuse-ld=lld -flto myblas.o multisource.o -o main.exe -Wl,-mllvm=-load=/usr/workspace/wsa/dwhite/Enzyme/enzyme/build/Enzyme/ClangEnzyme-12.so

Thanks in advance for your help!!!

Dan White

[Tim Gymnich]

Hey Dan,

Against which LLVM did you build Enzyme? This looks to me like you built Enzyme against a different version of LLVM than mpicxx was built against. The plugin interface of llvm/clang is not ABI stable.

Tim

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