Initialize local repository

repo init -u https://github.com/ProjectMatrixx/android -b 16.2 --git-lfs

Sync up

repo sync -c -j$(nproc --all) --force-sync --no-clone-bundle --no-tags

Build

• Set up the build environment

. build/envsetup.sh

• Lunch a target

lunch matrixx_codename-bp4a-user

• To start compiling

make matrixx

Build Flags & Overlays

• Maintainer flag (define in matrixx_device.mk)

MATRIXX_MAINTAINER := Mrick343

• Include MatLog Application

TARGET_INCLUDE_MATLOG := true

• If device support UDFPS

TARGET_CUSTOM_UDFPS := true

• For GMS

WITH_GMS := true

WITH_EXTRA_GAPPS := true (For including extra apps in gms build i.e DocumentsUIGoogle ,Maps, PrebuiltGmail, FilesPrebuilt, Photos & Chrome-Stub)

TARGET_INCLUDE_PIXEL_LAUNCHER := true (For Building Pixel Launcher)

TARGET_DEFAULT_PIXEL_LAUNCHER := true (Set Pixel Launcher as default Launcher)

WITH_GMS_COMMS_SUITE := true (For Google Telephony)

WITH_GMS_AICORE := true (For Google AICore)

• For bcr

WITH_BCR := true

• Set surfaceflinger refreshrate

$(call soong_config_set,surfaceflinger,frame_rate_category_high,120)
$(call soong_config_set,surfaceflinger,frame_rate_category_min,60)

• Surface flinger boosting (Smoother scrolling, fewer frame drops but Keeps CPU slightly “awake”)

SURFACE_FLINGER_BOOST := true

• Enable optimized dexopt tuning (default false, Recomended for highend devices)

TARGET_OPTIMIZED_DEXOPT := true

• Bypass Charging

BYPASS_CHARGE_SUPPORTED := true

• High Brightness Mode (HBM)

HBM_SUPPORTED := false
HBM_NODE := /sys/class/backlight/panel0-backlight/hbm_mode

• Use X reality engine (careful with mtk, causes display stuck issue)

USE_REALITY_ENGINE := true

• Drop default aperture camera

PRODUCT_NO_CAMERA := true

• Limit AOD refreshrate (SystemUI overlay)

<!-- Preferred max refresh rate at AOD & Ambient Display, if supported by the display. -->
<integer name="config_aodMaxRefreshRate">60</integer>