maintainer-feedback requested: [Bug 279731] devel/cmake: find_package(LLVM 18 REQUIRED CONFIG) fails to find llvm18-18.1.6

[bugzilla-noreply at freebsd.org]

Bugzilla Automation <bugzilla at FreeBSD.org> has asked freebsd-kde (group)
<kde at FreeBSD.org> for maintainer-feedback:
Bug 279731: devel/cmake: find_package(LLVM 18 REQUIRED CONFIG) fails to find
llvm18-18.1.6
https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=279731



--- Description ---
When these 2 llvm packages are installed:
$ pkg info | grep llvm
llvm15-15.0.7_10	       LLVM and Clang
llvm18-18.1.6_1 	       LLVM and Clang

This cmake script fails to find llvm18:
$ cat CMakeLists.txt 
cmake_minimum_required(VERSION 3.18.0)
find_package(LLVM 18 REQUIRED CONFIG)

Error:
Make Error at CMakeLists.txt:2 (find_package):
  Could not find a configuration file for package "LLVM" that is compatible
  with requested version "18".

  The following configuration files were considered but not accepted:

    /usr/local/llvm15/lib/cmake/llvm/LLVMConfig.cmake, version: 15.0.7
    /usr/local/llvm18/lib/cmake/llvm/LLVMConfig.cmake, version: 18.1.6


It is unclear why is llvm18-18.1.6 not compatible with the requirement "18" for
LLVM.

14.1-STABLE

cmake-3.29.3		       Meta-port to connect all CMake bits
cmake-core-3.29.3	       Cross-platform Makefile generator