CMake FindBoost module doesn't like boost 1.75

[Richard Shaw <hobbes1069@xxxxxxxxx>]

It tends to generate a lot of output around:

CMake Warning at /usr/share/cmake/Modules/FindBoost.cmake:1204 (message):
  New Boost version may have incorrect or missing dependencies and imported
  targets

Specifically for trying to build FreeCAD it KIND OF finds the libraries:

-- Found Boost: /usr/include (found suitable version "1.75.0", minimum required is "1.55") found components: filesystem program_options regex system thread chrono date_time atomic

But then later:

CMake Warning at /usr/share/cmake/Modules/FindBoost.cmake:1204 (message):
  New Boost version may have incorrect or missing dependencies and imported
  targets
Call Stack (most recent call first):
  /usr/share/cmake/Modules/FindBoost.cmake:1326 (_Boost_COMPONENT_DEPENDENCIES)
  /usr/share/cmake/Modules/FindBoost.cmake:1935 (_Boost_MISSING_DEPENDENCIES)
  src/Mod/Path/libarea/CMakeLists.txt:20 (find_package)
-- Found Boost: /usr/include (found version "1.75.0") found components: python39
-- found Boost: 1_75
-- boost-incude dirs are: /usr/include
-- boost-python lib is:
-- boost_LIBRARY_DIRS is: /usr/lib64
-- Boost_LIBRARIES is: /usr/lib64/libboost_python39.so

And then freecad (a fork testing vtk9 compatibility) fails with:

/usr/bin/ld: ../../lib/libFreeCADApp.so: undefined reference to `boost::match_results<__gnu_cxx::__normal_iterator<char const*, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > >, std::allocator<boost::sub_match<__gnu_cxx::__normal_iterator<char const*, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > > > > >::maybe_assign(boost::match_results<__gnu_cxx::__normal_iterator<char const*, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > >, std::allocator<boost::sub_match<__gnu_cxx::__normal_iterator<char const*, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > > > > > const&)'
/usr/bin/ld: ../../lib/libFreeCADApp.so: undefined reference to `boost::program_options::abstract_variables_map::operator[](std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > const&) const'
/usr/bin/ld: ../../lib/libFreeCADApp.so: undefined reference to `vtable for boost::program_options::error_with_option_name'
/usr/bin/ld: ../../lib/libFreeCADApp.so: undefined reference to `boost::program_options::variables_map::variables_map()'
/usr/bin/ld: ../../lib/libFreeCADApp.so: undefined reference to `boost::program_options::error_with_option_name::what() const'
/usr/bin/ld: ../../lib/libFreeCADApp.so: undefined reference to `boost::re_detail_107500::verify_options(unsigned int, boost::regex_constants::_match_flags)'
/usr/bin/ld: ../../lib/libFreeCADApp.so: undefined reference to `typeinfo for boost::program_options::error_with_option_name'
/usr/bin/ld: ../../lib/libFreeCADApp.so: undefined reference to `boost::re_detail_107500::get_mem_block()'
/usr/bin/ld: ../../lib/libFreeCADApp.so: undefined reference to `typeinfo for boost::regex_error

...

But when FreeCADApp is actually linking only /usr/lib64/libboost_serialization.so is linked against.

Full log:

https://copr-be.cloud.fedoraproject.org/results/orion/vtk9.0/fedora-rawhide-aarch64/01938305-freecad/build.log.gz

WTH!?!?! What a mess.

Thanks,

Richard

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