source code for Truecrypt? or for 32 bit ARM?

[dieselnutjob]

I was quite surprised to find Truecrypt available on the Pinebook Pro Manjaro build, and pleased because I still use it on Windows and Intel Linux.

I would also like to use it on the mrFixIt debian build with 32 bit ARM userland.

Anyone know if it's available?  or where I can get the source code from?  I suppose as it's in the Manjaro build the source code must be available.