Compile Failure

[dizhizhou]

Hi community,

VAST compile fails in my local ubuntu due to the following link errors:

Commands:
`vast$ cmake --preset ninja-multi-default --toolchain ./cmake/lld.toolchain.cmake -DCMAKE_PREFIX_PATH=/usr/local/llvm-17/ -DCMAKE_C_COMPILER=clang -DCMAKE_CXX_COMPILER=clang++ -DLLVM_ENABLE_LLD=ON -DLLVM_ENABLE_RTTI=ON

// There are many of these link errors. I only list one of them
vast$ cmake --build --preset ninja-rel
.....
[188/191] Linking CXX executable tools/vast-lsp-server/Release/vast-lsp-server
FAILED: tools/vast-lsp-server/Release/vast-lsp-server
.......
ld.lld: error: undefined symbol: typeinfo for mlir::Dialect

referenced by UnsupportedDialect.cpp
UnsupportedDialect.cpp.o:(typeinfo for vast::unsup::UnsupportedDialect) in archive Release/lib/libVASTUnsupported.a
referenced by MetaDialect.cpp
MetaDialect.cpp.o:(typeinfo for vast::meta::MetaDialect) in archive Release/lib/libVASTMeta.a
referenced by LowLevelDialect.cpp
LowLevelDialect.cpp.o:(typeinfo for vast::ll::LowLevelDialect) in archive Release/lib/libVASTLowLevel.a
referenced 3 more times
did you mean: vtable for mlir::Dialect
defined in: /usr/local/llvm-17/lib/libMLIRIR.a(Dialect.cpp.o)
`

It seems that MLIR builds are not linked correctly.

LLVM&MLIR project(I build llvm-17 from source code) is built correclty and the install path is /usr/local/llvm-17/ which is already in the vast cmake config CLI

/mnt/data/vast$ find /usr/local/llvm-17/ -name LLVMConfig.cmake
/usr/local/llvm-17/lib/cmake/llvm/LLVMConfig.cmake
/mnt/data/vast$ find /usr/local/llvm-17/ -name MLIRConfig.cmake
/usr/local/llvm-17/lib/cmake/mlir/MLIRConfig.cmake

Thoughts?

[dizhizhou]

Solved. It turns out that my LLVM was compiled without DLLVM_ENABLE_RTTI=ON

[lkorenc]

Glad you were able to solve it! If you stumble upon any other issues do not hesitate to ask.