Any Nuttx example/applications that use autoconf to build?

[Peter Barada]

I'm looking at trying to port an application to Nuttx that configures 
using autoconf, and wondering if there are any examples/application 
someone can point me to that invokes an autoconf generated configure 
script in its build process? Google keeps trying to point me toward 
tools/configure.sh...

Thanks in advance!
--
Peter Barada
peter.bar...@gmail.com