Hello David, * Dr. David Kirkby wrote on Sat, Dec 12, 2009 at 12:08:11PM CET: > I have seen issues in the Sage mathematics software > where problems arise if a library included in Sage is installed on > the system too. Sage included the source for all the libraries it > needs (e.g. readline), in case the system does not have that > library. That sometimes causes problems, if the option "-L > $SAGE_HOME/local/lib" is added and the library is also on the > system. Is libtool used to create this library? Then this shouldn't happen (famous last words), and if it does, it's typically the sign of a bug in the makefiles or in libtool somewhere. In case libtool is used, please send a message to the bug-libtool at gnu.org mailing list, including a reference to this thread, and the output of the `.../libtool --mode=link ...' command that fails, but with --debug added as first argument to libtool, as well as the output of .../libtool --config Thanks, Ralf