The imported target "clang-cpp" references the file [cmake] [cmake] "/usr/lib/llvm-20/lib/libclang-cpp.so.20.0" [cmake] [cmake] but this file does not exist.

[Zingam]

Configuring libc++ fails when using LLVM20 installed by llvm.sh on Ubuntu 24.04 Noble.

[cmake] CMake Error at /usr/lib/llvm-20/lib/cmake/clang/ClangTargets.cmake:847 (message):
[cmake] The imported target "clang-cpp" references the file
[cmake]
[cmake] "/usr/lib/llvm-20/lib/libclang-cpp.so.20.0"
[cmake]
[cmake] but this file does not exist. Possible reasons include:
[cmake]
[cmake] * The file was deleted, renamed, or moved to another location.
[cmake]
[cmake] * An install or uninstall procedure did not complete successfully.
[cmake]
[cmake] * The installation package was faulty and contained
[cmake]
[cmake] "/usr/lib/llvm-20/lib/cmake/clang/ClangTargets.cmake"

This is the latest issue in a series of issues related to LLVM19/20:
#107116
#99819
#108995

[kimgr]

We're using the following workaround in IWYU CI: https://github.com/include-what-you-use/include-what-you-use/blob/5ac52caf1529630e6aa7932e0ea9382fca206fb4/.github/workflows/ci.yml#L50

[kimgr]

This is fixed for both 19 and 20 as far as I can tell from the consuming side.

[sylvestre]

Yes. Thanks
Forgot to close it