Workarounds for building Android 12 on 8GB RAM

8GB_android-12_compilation-note

Workarounds for building S on 8GB RAM environment:

1. At the start of the build:
[ 99% 138/139] /mnt/ssd/lineage/out/soong/.bootstrap/bin/soong_build /mnt/ssd/lineage/out/soong/build.ninja
This used to take around 30mins, after enabling zram now it takes around 30secs (thanks to @kdrag0n for the zram idea) which is on par with what happens in 16GB RAM building environments

sudo apt install zram-config for installing zram-config package
sudo nano /etc/fstab and add a # in front of the swap disk if you have one and then reboot
After booting cat /proc/swaps to check if zram is enabled or not

2. To avoid issues while building metalava (outOfMemoryException: java heap space)
Pick this commit --> https://github.com/verNANDo57/android_build_soong/commit/ffc8846a01fcfc20d6cf8ca701ef73d99f15acad

Hello how do create cmd.BuildTool

Hello how do create cmd.BuildTool

Its already there you have to change the heap. Lineage is currently combing to files into one. I post later. What your gonna do is change the value on every of heap. Once you do this it will build.

will this work for android 13?

will this work for android 13?

I don't think so, try searching guide for A13.

will this work for android 13?

WELL my friend built los 20 with 8gb ram + 36gb zram (fedora)

will this work for android 13?

I don't think so, try searching guide for A13.

Yupp these things are still working just have to increase Java max heap size limit by 1gb more.