[xcrysden] error while executing /xcrysden-1.5.53-bin-semishared/bin/ftnunit

[H*X]

Dear all,


  After I finished installation of xcrysden-1.5.53-linux_x86_64-semishared.tar.gz, I typed ./xcrysden to launch the       programme. The programme start but with the following error:
 /xcrysden-1.5.53-bin-semishared/bin/ftnunit:error while loading shared  libraries: libquadmath. so. 0: cannot open shared object file: No such file or  directory.


  I would be very appreciated if someone can help me to solve this problem.
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