bad paths in installed cmake files

[Greg Troxel <gdt%lexort.com@localhost>]

In the macos 12 bulk build, mosquitto didn't build.  (It builds most
places, I think.)

reading the log:
  https://reports.pkgci.org/Darwin/12.3/arm64/20250606.1533/mosquitto-2.0.21nb1/configure.log

I see

    CMake Error in src/CMakeLists.txt:
      Imported target "websockets_shared" includes non-existent path

        "/Users/pbulk/build/www/libwebsockets/work/.buildlink/include"

      in its INTERFACE_INCLUDE_DIRECTORIES.  Possible reasons include:

      * The path was deleted, renamed, or moved to another location.

      * An install or uninstall procedure did not complete successfully.

      * The installation package was faulty and references files it does not
      provide.

I looked on my NetBSD 10 system and

    $ egrep work /usr/pkg/lib/cmake/libwebsockets/*
    /usr/pkg/lib/cmake/libwebsockets/LibwebsocketsTargets.cmake:  INTERFACE_LINK_LIBRARIES "websockets_shared;/tmp/work/www/libwebsockets/work/.buildlink/lib/libuv.so"
    /usr/pkg/lib/cmake/libwebsockets/LibwebsocketsTargets.cmake:      OR NOT DEFINED _cmake_import_check_xcframework_for_${_cmake_target}
    /usr/pkg/lib/cmake/libwebsockets/LibwebsocketsTargets.cmake:      OR NOT IS_DIRECTORY "${_cmake_import_check_xcframework_for_${_cmake_target}}")

and while lines 2 and 3 are ok, line 1 is not.


It seems

   we need to patch out build paths harder

   it would be great to have a 'make package'-time check for bad paths
   in cmakefiles

but IANA cmake expert.