Bug#1057151: clang-17: ClangTargets.cmake cannot find libclang-17.so.1

[Gianfranco Costamagna]

control: severity -1 serious

Hello, I can reproduce, something regressed between 17.0.5 and 17.0.6...

And I pushed a test to make sure we spot this in advance next time.

G.

On Thu, 30 Nov 2023 12:13:21 -0700 Cordell Bloor <cgmb at slerp.xyz> wrote:
> Package: clang-17
> Version: 1:17.0.6-1
> Severity: normal
> X-Debbugs-Cc: cgmb at slerp.xyz, debian-ai at lists.debian.org
> 
> Dear Maintainer,
> 
> While attempting to update rocm-device-libs, I noticed that searching
> for clang with find_package(Clang) will fail with an error. The
> ClangTargets.cmake file expects libclang to be found at the path
> "/usr/lib/llvm-17/lib/libclang-17.so.1", but the file is actually
> installed to "/usr/lib/x86_64-linux-gnu/libclang-17.so.1".
> 
> The error encountred is:
> 
> ```
> CMake Error at /usr/lib/llvm-17/lib/cmake/clang/ClangTargets.cmake:833 (message):
>   The imported target "libclang" references the file
> 
>      "/usr/lib/llvm-17/lib/libclang-17.so.1"
> 
>   but this file does not exist.  Possible reasons include:
> 
>   * The file was deleted, renamed, or moved to another location.
> 
>   * An install or uninstall procedure did not complete successfully.
> 
>   * The installation package was faulty and contained
> 
>      "/usr/lib/llvm-17/lib/cmake/clang/ClangTargets.cmake"
> 
>   but not all the files it references.
> ```
> 
> The error can be reproduced with this minimal CMakeLists.txt:
> 
> ```
> cmake_minimum_required(VERSION 3.22)
> project(example)
> find_package(Clang)
> ```
> 
> Regards,
> Cordell Bloor
> 
> -- System Information:
> Debian Release: trixie/sid
>   APT prefers unstable
>   APT policy: (500, 'unstable')
> Architecture: amd64 (x86_64)
> 
> Kernel: Linux 6.5.0-4-amd64 (SMP w/32 CPU threads; PREEMPT)
> Locale: LANG=C, LC_CTYPE=C.UTF-8 (charmap=UTF-8), LANGUAGE not set
> Shell: /bin/sh linked to /usr/bin/dash
> Init: unable to detect
> 
> Versions of packages clang-17 depends on:
> ii  binutils                2.41-7
> ii  libc6                   2.37-12
> ii  libc6-dev               2.37-12
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