libLLVM-19.so is a broken symbolic link

[aykevl]

After installing the LLVM 19 packages on Debian 12 (inside a distrobox), I got some broken symlinks:

$ file /usr/lib/llvm-19/lib/libLLVM-19*
/usr/lib/llvm-19/lib/libLLVM-19.1.0.so:   broken symbolic link to ../../aarch64-linux-gnu/libLLVM-19.so.1
/usr/lib/llvm-19/lib/libLLVM-19.1.0.so.1: broken symbolic link to ../../aarch64-linux-gnu/libLLVM-19.so.1
/usr/lib/llvm-19/lib/libLLVM-19.so:       broken symbolic link to ../../aarch64-linux-gnu/libLLVM-19.so.1
/usr/lib/llvm-19/lib/libLLVM-19.so.1:     broken symbolic link to ../../aarch64-linux-gnu/libLLVM-19.so.1

I think this is related to #82779 but reporting separately as it broke a single-arch installation for me (when linking to /usr/lib/llvm-19/lib/libLLVM-19.so).

I worked around this issue by linking to /usr/lib/llvm-19/lib/libLLVM.so instead:

$ file /usr/lib/llvm-19/lib/libLLVM.*
/usr/lib/llvm-19/lib/libLLVM.so:      symbolic link to libLLVM.so.19.1
/usr/lib/llvm-19/lib/libLLVM.so.1:    ELF 64-bit LSB shared object, ARM aarch64, version 1 (SYSV), dynamically linked, BuildID[sha1]=708aedecf08f3891e0370be3cbbfd2183c7e950f, stripped
/usr/lib/llvm-19/lib/libLLVM.so.19.1: symbolic link to libLLVM.so.1

[aykevl]

Actually it's even worse. Because the library isn't stored anymore in /usr/lib/aarch64-linux-gnu (or whatever the architecture directory is, I'm using an aarch64 system), I get error while loading shared libraries: libLLVM.so.19.1: cannot open shared object file: No such file or directory. So even though the program can link, it cannot run without manually setting LD_LIBRARY_PATH=/usr/lib/llvm-19/lib.

[thoughtafter]

I'm seeing this in ubuntu-22.04 and ubuntu-24.04 running

          wget https://apt.llvm.org/llvm.sh
          chmod +x llvm.sh
          sudo ./llvm.sh 19

I'm currently correcting it with:

sudo ln -s /usr/lib/llvm-19/lib/libLLVM.so.1 /usr/lib/x86_64-linux-gnu/libLLVM-19.so.1

[a1batross]

I'm having the same problem with libc++abi-18-dev-wasm32 and libc++-18-dev-wasm32.

The libraries according to symblink are expected to be in /usr/lib/llvm-18/wasm32-wasi/libc++.a but it's completely missing from the package.

The version is 1:18.1.8~++20240731024944+3b5b5c1ec4a3-1~exp1~20240731145000.144

[theoparis]

I'm having the same problem with libclang-cpp.so for LLVM 20 on Debian with the apt.llvm.org repositories.
/usr/lib/llvm-20/lib/libclang-cpp.so.20.1: broken symbolic link to ../../x86_64-linux-gnu/libclang-cpp.so.20.1

[Zingam]

Is this related: #107116

[vient]

Same on x86_64 Ubuntu 20.04

$ find /usr | grep libLLVM-19 | xargs file 
/usr/lib/llvm-19/lib/libLLVM-19.1.0.so:   broken symbolic link to ../../x86_64-linux-gnu/libLLVM-19.so.1
/usr/lib/llvm-19/lib/libLLVM-19.so.1:     broken symbolic link to ../../x86_64-linux-gnu/libLLVM-19.so.1
/usr/lib/llvm-19/lib/libLLVM-19.1.0.so.1: broken symbolic link to ../../x86_64-linux-gnu/libLLVM-19.so.1
/usr/lib/llvm-19/lib/libLLVM-19.so:       broken symbolic link to ../../x86_64-linux-gnu/libLLVM-19.so.1
/usr/lib/x86_64-linux-gnu/libLLVM-19.so:  broken symbolic link to libLLVM-19.so.1

$ dpkg -l | grep libllvm19
ii  libllvm19:amd64                               1:19.1.0~++20240826073121+5f744ee5c770-1~exp1~20240826073220.27  amd64        Modular compiler and toolchain technologies, runtime library

@sylvestre fyi