By default, the Heimdal external password check function is installed as
`/usr/local/bin/heimdal-strength`, and the plugin is installed as
`/usr/local/lib/krb5/plugins/pwqual/strength.so`.  You can change these
paths with the `--prefix`, `--libdir`, and `--bindir` options to
`configure`.

By default, the embedded version of CrackLib will be used.  To build with
the system version of CrackLib, pass `--with-cracklib` to `configure`.
You can optionally add a directory, giving the root directory where
CrackLib was installed, or separately set the include and library path
with `--with-cracklib-include` and `--with-cracklib-lib`.  You can also
build without any CrackLib support by passing `--without-cracklib` to
`configure`.

krb5-strength will automatically build with TinyCDB if it is found.  To
specify the installation path of TinyCDB, use `--with-tinycdb`.  You can
also separately set the include and library path with
`--with-tinycdb-include` and `--with-tinycdb-lib`.

Similarly, krb5-strength will automatically build with SQLite if it is
found.  To specify the installation path of SQLite, use `--with-sqlite`.
You can also separately set the include and library path with
`--with-sqlite-include` and `--with-sqlite-lib`.