I'm having trouble with linking to an installation of Boost. I just downloaded boost_1_41_0.tar.bz2, untarred it, and did: $ ./bootstrap.sh --prefix=/home/sewall/src/boost-1.41.0 $ ./bjam --prefix=/home/sewall/src/boost-1.41.0 install Now I've got a project (using autotools+libtool) of my own making that uses a number of Boost libraries. After pointing the configure script to the right spot for the Boost libraries, I wind up with errors like the following: /bin/sh ../libtool --tag=CXX --mode=link g++ -I../sim/include -I/home/sewall/src/boost-1.41.0/include -I/usr/include/libxml2 -fopenmp -O0 -fno-inline -ggdb -Wall -Wextra -Wno-unused-parameter -Wno-enum-compare -o xml-test xml-test.o ../sim/src/libhwm_net.la -lrt libtool: link: g++ -I../sim/include -I/home/sewall/src/boost-1.41.0/include -I/usr/include/libxml2 -fopenmp -O0 -fno-inline -ggdb -Wall -Wextra -Wno-unused-parameter -Wno-enum-compare -o xml-test xml-test.o ../sim/src/.libs/libhwm_net.a -L/home/sewall/src/boost-1.41.0/lib -lxml2 -lz -lboost_filesystem -lboost_regex -lrt /usr/bin/ld: warning: libboost_system.so.1.41.0, needed by /home/sewall/src/boost-1.41.0/lib/libboost_filesystem.so, not found (try using -rpath or -rpath-link) /home/sewall/src/boost-1.41.0/lib/libboost_filesystem.so: undefined reference to `boost::system::get_system_category()' /home/sewall/src/boost-1.41.0/lib/libboost_filesystem.so: undefined reference to `boost::system::get_generic_category()' I don't claim to understand libtool terribly well, but I think that the xml-test target is pulling in the dependencies of libhwm_net.la, which in turn pulls in boost_filesystem and boost_regex. It seems that it boost_filesystem is then asking for libboost_system. Everything is acting as it should up to this point, but then the linker seems to be at a loss to where libboost_system can be found. If I manually add -lboost_system to the above command line, the target builds fine. Of course I can just have my configure script general -lboost_filesystem and -lboost_system whenever boost_filesystem is needed, but I suspect there's a better way to do it. Is there something I should have added to my Boost build to have it know to look for boost_system in /home/sewall/src/boost-1.41.0? Thanks, Jason P.S. I have added /home/sewall/src/boost-1.41.0 to my LD_LIBRARY_PATH, if that helps.