yaml-cpp is unconditionally linked and included

[gavanderhoorn]

The current CMakeLists.txt (here) does not do any detection of the required yaml-cpp dependency, but unconditionally links against it.

This will fail on systems without yaml-cpp, or with yaml-cpp outside the standard include and link paths and should be fixed.

[durovsky]

Could this be a solution?

find_package(PkgConfig)
if(PKG_CONFIG_FOUND)
pkg_check_modules(NEW_YAMLCPP yaml-cpp)
endif()

if(NEW_YAMLCPP_FOUND)
target_link_libraries(${PROJECT_NAME} yaml-cpp)
endif()

[gavanderhoorn]

It is part of a solution, yes. I'd do it slightly differently (finding yaml-cpp itself does not necessarily mean that it is the new version). If you can give me some time, I'll propose something in a PR.