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GiNaC requires the CLN library by Bruno Haible installed on your system.
-It is available from <ftp://ftpthep.physik.uni-mainz.de/pub/gnu/>.
+It is available from <http://www.ginac.de/CLN/>.
You will also need a decent ISO C++-11 compiler. We recommend the C++
compiler from the GNU compiler collection, GCC >= 4.8. If you have a