title: libtap
parent: FAQ
---

# How do I prove the C routines work?

We use [libtap][libtap] to test C routines that are in `lib/utils_*.c`.  The
tests are in `lib/tests/test_*.c`.

The latest libtap version is currently 1.01.  However, there is a bug with the
thread implementation.  To workaround, run:

    $ CPPFLAGS="-UHAVE_LIBPTHREAD" ./configure
    $ make
    $ make check
    $ make install

Now when you run the Monitoring Plugins `./configure` script, it should find
the libtap library and compile the tests and run them when you run `make`
`test`.

*Update:* These days, the Monitoring Plugins tarball includes a copy of libtap
which is used if you run `./configure` `--enable-libtap`.

[libtap]: http://jc.ngo.org.uk/trac-bin/trac.cgi/wiki/LibTap "libtap"

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