getCatkinLibraryPaths() is hardcoded to $CATKIN_PREFIX_PATH/lib

[vmatare]

pluginlib/pluginlib/include/pluginlib/class_loader_imp.hpp

Line 313 in 54c925e

boost::filesystem::path lib("lib");

That's not a portable way of determining the catkin library path. You cannot rely on lib being a correct default on all systems. At least on 64-bit systems, lib64 should be tried first. You could simply check whether the compiler is building in 64 or 32 bit mode.