unable to build jffs2 filesystem ...

[anindya14]

extraction was fine but when tried to rebuild it I got the following

**./build-firmware.sh
Firmware Mod Kit (build) 0.99, (c)2011-2013 Craig Heffner, Jeremy Collake

Building new jffs2 file system... (this may take several minutes!)
Unsupported file system 'jffs2'!
Failed to create new file system! Quitting...**

Please help

[Lanchon]

install that file system. or if your kernel doesnt support it you may need a new one (or new OS)

[anindya14]

install that file system. or if your kernel doesn't support it you may need a new one (or new OS)

I am not sure how as I think the file system is already there ... I am using Ubuntu 18.04 can you tell me how do I verify the installation of file system.

[tomyummmm]

In case anyone wants to use jffs2, i have updated the project and added jffs2 file support into the build-firmware.sh and updated the files. Pull request has been made #175 and if not accepted, you can download the files in my fork.
(https://github.com/tomyummmm/firmware-mod-kit)