When trying to build Halide on Linux system with llvm-10.0 on release/10.x and master branches, facing the below issue

Question

[ 53%] Linking CXX executable test_function_dag
/bin/ld: ../../libHalide.so.10.0.0: undefined reference to `typeinfo for llvm::SectionMemoryManager'
collect2: error: ld returned 1 exit status
make[2]: *** [src/autoschedulers/adams2019/CMakeFiles/test_function_dag.dir/build.make:134: src/autoschedulers/adams2019/test_function_dag] Error 1
make[1]: *** [CMakeFiles/Makefile2:2328: src/autoschedulers/adams2019/CMakeFiles/test_function_dag.dir/all] Error 2
make: *** [Makefile:182: all] Error 2

I'm using pre-built LLVM binaries and below cmake command to configure

cmake -DCMAKE_BUILD_TYPE=Release -DLLVM_DIR=/home/harry/llvm/lib/cmake/llvm ../

Any advice and suggestions will be greatly appreciated.

How did you build LLVM and how did you configure Halide? It looks like you might be trying to use LLVM out of a build tree, rather than an install tree. — Alex Reinking, Oct 30 '20 at 08:50
Whose pre-built binaries? Your distro's? Which distro? From the LLVM website? — Alex Reinking, Oct 30 '20 at 08:52
You should post the command you used to configure Halide so we can try to repro. — Alex Reinking, Oct 30 '20 at 08:54

score 1 · Accepted Answer · answered Oct 30 '20 at 09:36

1

I cloned Halide from release/10.x, and compiled against the LLVM 10.0.0 binaries obtained here. On Ubuntu 20.04 LTS, I had to also apt install libtinfo5 because these binaries are built against old system libraries.

I noticed that the official binaries are not built with RTTI enabled (ugh) and was able to repro and fix. There's a bug in dependencies/llvm/CMakeLists.txt. Find the line that reads:

$<$<COMPILE_LANG_AND_ID:CXX,GCC,Clang,AppleClang>:-fno-rtti>)

and change GCC to GNU. We don't test with non-RTTI LLVM, which is why this wasn't caught.

answered Oct 30 '20 at 09:36

Alex Reinking

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I opened an issue. Thanks for finding this! https://github.com/halide/Halide/issues/5418 – Alex Reinking Oct 30 '20 at 09:38
Thank you, I am able to build it now. – harry Oct 30 '20 at 10:48
1

This fix is now in upstream Halide and has been backported to the `release/10.x` branch. It will be available in the 10.0.1 release. – Alex Reinking Oct 30 '20 at 18:25

When trying to build Halide on Linux system with llvm-10.0 on release/10.x and master branches, facing the below issue

1 Answers1