[Pkg-cmake-team] Bug#1031799: cmake-data: cmake does not search multiarch paths for HIP

[Cordell Bloor]

There is a related issue once finding hip-lang-config.cmake is handled. The
next problem is this:

     CMake Error at 
/usr/share/cmake-3.25/Modules/CMakeFindDependencyMacro.cmake:47 
(find_package):
       By not providing "Findamd_comgr.cmake" in CMAKE_MODULE_PATH this 
project
       has asked CMake to find a package configuration file provided by
       "amd_comgr", but CMake did not find one.

       Could not find a package configuration file provided by 
"amd_comgr" with
       any of the following names:

         amd_comgrConfig.cmake
         amd_comgr-config.cmake

       Add the installation prefix of "amd_comgr" to CMAKE_PREFIX_PATH 
or set
       "amd_comgr_DIR" to a directory containing one of the above files.  If
       "amd_comgr" provides a separate development package or SDK, be 
sure it has
       been installed.
     Call Stack (most recent call first):
/usr/lib/x86_64-linux-gnu/cmake/hip-lang/hip-lang-config.cmake:98 
(find_dependency)
       /usr/share/cmake-3.25/Modules/CMakeHIPInformation.cmake:146 
(find_package)
/root/build/CMakeFiles/CMakeScratch/TryCompile-9ltYBc/CMakeLists.txt:2 
(project)


     CMake Error at 
/usr/share/cmake-3.25/Modules/CMakeDetermineCompilerABI.cmake:57 
(try_compile):
       Failed to configure test project build system.
     Call Stack (most recent call first):
       /usr/share/cmake-3.25/Modules/CMakeTestHIPCompiler.cmake:29 
(CMAKE_DETERMINE_COMPILER_ABI)
       CMakeLists.txt:6 (enable_language)


     -- Configuring incomplete, errors occurred!

I haven't pinned down the exact cause, but I think this is because
project(example LANGUAGE HIP) will call hip-lang-config.cmake before
CMAKE_HIP_LIBRARY_ARCHITECTURE is detected and therefore
/usr/lib/x86_64-linux-gnu/amd_comgr is not in the search path. It only 
checks
/usr/lib/amd_comgr. You can workaround the issue by passing the architecture
explicitly or by adding /usr/lib/x86_64-linux-gnu/amd_comgr to your PATH.

It's not immediately clear to me whether this aspect of the failure 
should be
considered a HIP bug or a CMake bug. I'm tempted to ask for some advice from
upstream.