CMake Error: Readline Library Not Found

[Volantis]

Hey there!

I'm having an issue while trying to compile SkyFire 5.4.8.

OS: Debian 9 (Strech)
Following: http://wiki.projectskyfire.org/index.php?title=Installation_(Linux_5xx)

Error Message

----

-- Found MySQL library: /usr/lib/x86_64-linux-gnu/libmariadbclient.so
-- Found MySQL headers: /usr/include/mysql
CMake Error at cmake/macros/FindReadline.cmake:26 (MESSAGE):
** Readline library not found!
**
Call Stack (most recent call first):
CMakeLists.txt:66 (find_package)
-- Configuring incomplete, errors occurred!

See also "/root/SkyFire.548/build/CMakeFiles/CMakeOutput.log".
See also "/root/SkyFire.548/build/CMakeFiles/CMakeError.log".

----

I have libreadline-dev, libreadline7, and libreadline5 installed - I have also tried using libreadline-gplv2-dev to no avail.

I am unsure of which steps to take from here.

Thank you.