Import error ghmm library

Question

i get this error:

Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
  File "/usr/local/lib/python2.6/dist-packages/ghmm.py", line 112, in <module>
    import ghmmwrapper
  File "/usr/local/lib/python2.6/dist-packages/ghmmwrapper.py", line 25, in <module>
    _ghmmwrapper = swig_import_helper()
  File "/usr/local/lib/python2.6/dist-packages/ghmmwrapper.py", line 21, in swig_import_helper
    _mod = imp.load_module('_ghmmwrapper', fp, pathname, description)
ImportError: libghmm.so.1: cannot open shared object file: No such file or directory

but

root@ubuntu:~# sudo locate libghmm
/usr/local/lib/libghmm.a
/usr/local/lib/libghmm.la
/usr/local/lib/libghmm.so
/usr/local/lib/libghmm.so.1
/usr/local/lib/libghmm.so.1.0.0

Why go i get this error? i tried adding

/usr/local/lib/

to my PYTHONPATH

but it didn't work.

Answer 1

Try to just execute sudo ldconfig for run-time bindings.

Answer 2

PYTHONPATH is working for python modules, not for system libraries.

You can add the local path to your system:

1. Edit as root /etc/ld.so.conf
2. Add a new line with /usr/local/lib
3. Save and quit
4. Run "sudo ldconfig"

Then restart your application, it will work.

If you don't want to change anything to your system, you can use the environment variable:

LD_PRELOAD_PATH=/usr/local/lib python <yourapp.py>

Answer 3

cd ~  
vi .bashrc  
#at the end of file add:
export LD_LIBRARY_PATH=$LD_LIBRARY_PATH:/usr/local/lib
# relogin terminal