Ubuntu 11.10 install sphinxbase.

Ubuntu 11.10 install sphinxbase.

There is a good manual at http://cmusphinx.sourceforge.net/wiki/tutorialpocketsphinx
Anyways. After you've downloaded and unpacked sphinx-0.7 archive

1. ./autogen.sh (It won't start right away, but will print what software packages are missing)
2. sudo apt-get install autoconf
3. sudo apt-get install libtool
4. sudo apt-get install automake
5. sudo apt-get install bison
6. sudo ./autogen.sh
8. sudo make
9. sudo make install 
10. export LD_LIBRARY_PATH=/usr/local/lib

Now try

sphinx_lm_convert

If you can see following message:

 ERROR: "cmd_ln.c", line 675: No arguments given, available options are:
Arguments list definition:
[NAME] [DEFLT] [DESCR]
-case Ether 'lower' or 'upper' - case fold to lower/upper case (NOT UNICODE AWARE)
-debug Verbosity level for debugging messages
-help no Shows the usage of the tool
-i Input language model file (required)
-ienc Input language model text encoding (no conversion done if not specified)
-ifmt Input language model format (will guess if not specified)
-logbase 1.0001 Base in which all log-likelihoods calculated
-mmap no Use memory-mapped I/O for reading binary LM files
-o Output language model file (required)
-oenc utf8 Output language model text encoding
-ofmt Output language model file (will guess if not specified)

Than everything works fine.
NOTE: this is required step to start training your own acoustic models for CMU Sphinx 4.