Compile LineageOS for Oneplus 3 on Fedora 25

Sun, 08 Jan 2017 21:11:07 +0000

Android community is one big cancerous clusterfuck, it is no wonder that finding a decent guide on how to compile Android from source written in a somewhat comprehensible english is pretty much mission impossible.
Cyanogenmod Inc. shutting down their wiki and services overnight surely didn’t help either.
Required packages on Fedora 25 are (rpmfusion repo must be previously installed):

$ sudo dnf install screen java-1.8.0-openjdk-devel git schedtool ncurses-devel ncurses-libs ncurses-compat-libs ImageMagick-devel libstdc++-devel bison gnupg lzma

For some reason the compilation process stores some temporary files in /tmp which, in Fedora 25, is mounted on a tmpfs ramdisk.
In case the ramdisk runs out of space for some retarded reason the build process instead of halting will go on like nothing happens and produce borked binaries as output.
To keep /tmp mounted on HDD run:

Manually backup/restore Android application's data

Sun, 08 Jan 2017 18:00:00 +0000

Android stores application’s data in /data/data directory, it can be accessed via adb only on a rooted phone.
To make a backup copy the correspondent directory:

$ adb root
$ adb pull /data/data/eu.siacs.conversations

Application’s data can also be extracted from a full system backup made with TWRP:

$ tar -xvf data.ext4.win000

Restoring the backup is the tricky part since Android uses SELinux and every app has it’s own unix user.
Before copying back on the phone the already backupped files reinstall the app from f-droid or whatever, then proceed as follow:

LineageOS 14.1 on nagg.eu

Compile LineageOS for Oneplus 3 on Fedora 25

Manually backup/restore Android application's data