[question] how can i configure the package's dependencies linkage?

[OlegWorld]

I have such a problem: library A finds and includes boost through CMake like this:

find_package(Boost 1.65.1 COMPONENTS chrono system REQUIRED)
target_link_libraries(A ${Boost_LIBRARIES})

boost is a conan package.

then library A becomes a conan package, which i try to include into my project through conan with the help of cmake_find_package generator.

after "conan install . --update" command in my projects's folder, conan creates FindA.cmake file, which, among all, has a line in it:

get_target_property(tmp boost::boost INTERFACE_LINK_LIBRARIES)

as i understand, this line links ALL boost libraries to my target, instead of linking only chrono and system

ldd on my target also shows dependencies on all boost libraries

The question is: how can i configure conan/cmake to link only the libraries that are really needed

[danimtb]

Hi @OlegWorld,

I think you might be looking for the components feature: https://docs.conan.io/en/latest/creating_packages/package_information.html#using-components

In order to use the components from boost, its recipe should be updated with the components support described in the link above. That way cmake_find_package generator will be able to generate the correct targets for you.

Then you will be able to link your libA library with something like:

target_link_libraries(libA boost::chrono boost::system)