Link against _TARGETS #14
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It turns out passing libraries to link in
target_link_libraries()as${foo_pkg_LIBRARIES}introduces a lot of duplicate of the same library that needs to be linked. This the reason why theldlinker takes a REALLY long time to finish linking since it does not de-duplicate the duplicate libraries and links all them. Thelldlinker seems to be smarter about this.Switching to
${foo_pkg_TARGETS}prevents the duplicate libraries that were previously included as transitives. This is also the pattern that ROS 2 follows. See.