what do you expect?

[Ed F. McCurdy]

> checking for exp_expectv in -lexpect5.30.1... (cached) no

When configure reports a test result with '(cached)' it means
that the test was'nt made and it is using a result that it
determined on a previous run and stored in the file config.cache.

If you delete that file before re-running configure
it will force a re-evaluation of all the configure tests.

Hope that helps,
Ed