apparent boost upgrade trouble with ham/uhd

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

I am doing pkg_rr post the boost update, and things are almost entirely
ok.

ham/uhd fails, with a complaint:

  -- Configuring Boost C++ Libraries...
  -- 
  -- Checking for Boost version 1.66 or greater
  --   Looking for required Boost components...
  CMake Error at /tmp/work/ham/uhd/work/.buildlink/lib/cmake/Boost-1.89.0/BoostConfig.cmake:141 (find_package):
    Could not find a package configuration file provided by "boost_system"
    (requested version 1.89.0) with any of the following names:

      boost_systemConfig.cmake
      boost_system-config.cmake

    Add the installation prefix of "boost_system" to CMAKE_PREFIX_PATH or set
    "boost_system_DIR" to a directory containing one of the above files.  If
    "boost_system" provides a separate development package or SDK, be sure it
    has been installed.
  Call Stack (most recent call first):
    /tmp/work/ham/uhd/work/.buildlink/lib/cmake/Boost-1.89.0/BoostConfig.cmake:262 (boost_find_component)
    /usr/pkg/share/cmake-4.1/Modules/FindBoost.cmake:609 (find_package)
    cmake/Modules/UHDBoost.cmake:190 (find_package)
    CMakeLists.txt:332 (include)

I am updating to the latest, but that has the same trouble.

I do see

  > ls -l /usr/pkg/include/boost/system
  total 70
  -rw-r--r--  1 root  wheel   1832 Sep 29 13:54 api_config.hpp
  -rw-r--r--  1 root  wheel   1771 Sep 29 13:54 config.hpp
  drwxr-xr-x  2 root  wheel   1024 Sep 29 13:55 detail
  -rw-r--r--  1 root  wheel   1483 Sep 29 13:54 errc.hpp
  -rw-r--r--  1 root  wheel    460 Sep 29 13:54 error_category.hpp
  -rw-r--r--  1 root  wheel    773 Sep 29 13:54 error_code.hpp
  -rw-r--r--  1 root  wheel    464 Sep 29 13:54 error_condition.hpp
  -rw-r--r--  1 root  wheel    468 Sep 29 13:54 generic_category.hpp
  -rw-r--r--  1 root  wheel    697 Sep 29 13:54 is_error_code_enum.hpp
  -rw-r--r--  1 root  wheel    722 Sep 29 13:54 is_error_condition_enum.hpp
  -rw-r--r--  1 root  wheel   3415 Sep 29 13:54 linux_error.hpp
  -rw-r--r--  1 root  wheel  35225 Sep 29 13:54 result.hpp
  -rw-r--r--  1 root  wheel    520 Sep 29 13:54 system_category.hpp
  -rw-r--r--  1 root  wheel   1608 Sep 29 13:54 system_error.hpp
  -rw-r--r--  1 root  wheel   4738 Sep 29 13:54 windows_error.hpp


I am not immediately understanding the twisty maze of cmake files.