missing configure

Okay, so I
git clone https://github.com/jacklicn/thttpd.git
cd ./thttpd
./configure

Nope...no configure...let's see...
ls \*conf\*

config.h configure.ac

Maybe I should try and find it...

find  -name '\*configure\*' -print

Not there. If there is some new method for installing this please update the INSTALL.