[LineageOS Questions & Answers] sckzor:
Hello,

I am trying to port LineageOS to the Samsung Galaxy S8 as my first LineageOS port. I know this is probably one heck of an undertaking for a first port but a rooted snapdragon-based S8 is currently the only device I have access to and I would like to have stock-ish android on this device.

In any case, I am running into errors while trying to build for the platform.

I am using this guide with this guide for reference to try to port.

I have followed the first guide basically to the tee so far.

These are all of the things (of interest) that I have done.​

1. I executed these commands to clone the code base:

repo init -u https://github.com/LineageOS/android.git -b lineage-19.1
repo sync

2. I have created a file called "local_manifests.xml" in the directory ".repo/local_manifests/" that contains the following:

?xml version="1.0" encoding="UTF-8"?>
<manifest>
<remote name="android_device_samsung_dreamlte" fetch="https://github.com/TeamWin/" revision="android-9.0"/>
<project name="android_device_samsung_dreamlte" path="device/samsung/dreamlte" remote="android_device_samsung_dreamlte"
revision="android-9.0"/>
<remote name="android_kernel_samsung_msm8998" fetch="https://github.com/jesec/" revision="cm-14.1"/>
<project name="android_kernel_samsung_msm8998" path="kernel/samsung/msm8998" remote="android_kernel_samsung_msm8998" revision="cm-
14.1"/>
<remote name="vendor_samsung_dreamlte" fetch="https://github.com/AndroidBlobs/" revision="dreamltexx-user-8.0.0-R16NW-
G950FXXS4CRJD-release-keys"/>
<project name="vendor_samsung_dreamlte" path="vendor/samsung/dreamlte" remote="vendor_samsung_dreamlte" revision="dreamltexx-user-8.
0.0-R16NW-G950FXXS4CRJD-release-keys"/>
</manifest>

3. I have rerun the repo sync command to sync the blobs, kernel and architecture specific information from the local manifests.

4. I have added a file in the "device/samsung/dreamlte" directory called "lineage_dreamlte.mk" this file contains the following information based on the original "lineage.dependencies" file:

# Inherit from the common Open Source product configuration
$(call inherit-product, $(SRC_TARGET_DIR)/product/aosp_base_telephony.mk)

# Inherit from our custom product configuration
$(call inherit-product, vendor/lineage/config/common.mk)

PRODUCT_DEVICE := dreamlte
PRODUCT_NAME := lineage_dreamlte
PRODUCT_MODEL := Galaxy S8
PRODUCT_BRAND := Samsung
PRODUCT_MANUFACTURER := Samsung

5. I have added a blank file called "lineage.dependencies" in the same directory because the original omni.dependencies was also blank

6. I have modified the file called "BoardConfig.mk" in the same directory to read the following. This file was made based on a combination of the original file (which is for the Exynos-based model of the S8) and the board configuration for the Google Pixel 2 (available here) which has the same SOC as the Snapdragon-based S8.

Platform
DEVICE_CODENAME := dreamlte
DEVICE_PATH := device/samsung/$(DEVICE_CODENAME)
BOARD_VENDOR := samsung
TARGET_BOARD_PLATFORM := msm8998
TARGET_BOOTLOADER_BOARD_NAME := msm8998
TARGET_NO_BOOTLOADER := true
TARGET_NO_RADIOIMAGE := true

# Architecture
TARGET_ARCH := arm64
TARGET_ARCH_VARIANT := armv8-a
TARGET_CPU_ABI := arm64-v8a
TARGET_CPU_ABI2 :=
TARGET_CPU_VARIANT := cortex-a53
TARGET_CPU_SMP := true

# Secondary Architecture
TARGET_2ND_ARCH := arm
TARGET_2ND_ARCH_VARIANT := armv8-a
TARGET_2ND_CPU_ABI := armeabi-v7a
TARGET_2ND_CPU_ABI2 := armeabi
TARGET_2ND_CPU_VARIANT := cortex-a53

# File systems
BOARD_HAS_LARGE_FILESYSTEM := true
TARGET_USERIMAGES_USE_EXT4 := true
TARGET_USERIMAGES_USE_F2FS := true
BOARD_HAS_NO_REAL_SDCARD := true

# TWRP specific build flags
RECOVERY_VARIANT := twrp
ALLOW_MISSING_DEPENDENCIES=true
TW_THEME := portrait_hdpi
RECOVERY_SDCARD_ON_DATA := true
TARGET_RECOVERY_PIXEL_FORMAT := "ABGR_8888"
TW_BRIGHTNESS_PATH := "/sys/class/backlight/panel/brightness"
TW_MAX_BRIGHTNESS := 36600
TW_DEFAULT_BRIGHTNESS := 15300
TW_NO_REBOOT_BOOTLOADER := true
TW_HAS_DOWNLOAD_MODE := true
TW_INCLUDE_NTFS_3G := true
TW_EXCLUDE_SUPERSU := true
TW_EXTRA_LANGUAGES := true
TW_USE_NEW_MINADBD := true
LZMA_RAMDISK_TARGETS := recovery

# Kernel
BOARD_KERNEL_BASE := 0x10000000
BOARD_KERNEL_PAGESIZE := 2048
TARGET_PREBUILT_KERNEL := $(DEVICE_PATH)/kernel
BOARD_MKBOOTIMG_ARGS := --kernel_offset 0x00008000 --ramdisk_offset 0x01000000 --tags_offset 0x00000100 --dt $(DEVICE_PATH)/dtb

# Include
TARGET_SPECIFIC_HEADER_PATH := $(DEVICE_PATH)/include

7. I run the "source build/envsetup.sh" command

Up to this point there has been no errors.​

8. I execute the "brunch lineage_dreamlte-eng" command and get the following

In file included from build/make/core/config.mk:313:
In file included from build/make/core/envsetup.mk:323:
build/make/core/board_config.mk:246: error: Building a 32-bit-app-only product on a 64-bit device. If this is intentional, set TARGET_SUPPORTS_64_BIT_APPS := false.
21:30:50 dumpvars failed with: exit status 1
Device dreamlte not found. Attempting to retrieve device repository from LineageOS Github (http://github.com/LineageOS).
Repository for dreamlte not found in the LineageOS Github repository list. If this is in error, you may need to manually add it to your local_manifests/roomservice.xml.
In file included from build/make/core/config.mk:313:
In file included from build/make/core/envsetup.mk:323:
build/make/core/board_config.mk:246: error: Building a 32-bit-app-only product on a 64-bit device. If this is intentional, set TARGET_SUPPORTS_64_BIT_APPS := false.
21:30:51 dumpvars failed with: exit status 1
In file included from build/make/core/config.mk:313:
In file included from build/make/core/envsetup.mk:323:
build/make/core/board_config.mk:246: error: Building a 32-bit-app-only product on a 64-bit device. If this is intentional, set TARGET_SUPPORTS_64_BIT_APPS := false.
21:30:51 dumpvars failed with: exit status 1

** Don't have a product spec for: 'lineage_dreamlte'
** Do you have the right repo manifest?

No such item in brunch menu. Try 'breakfast'

I have looked up this error for multiple hours to no avail. I have no idea what could be the issue, it doesn't seem to me like the 32 bit error is fatal. It seems like it cannot find the product spec for some reason and that is the fatal error.

I am almost certain that I have made some sort of simple mistake that is causing the product spec to not show up. I am also almost certain I have made some sort of other error somewhere else in the process especially in step 6 (the one about the board config).

I would greatly appreciate someone looking over this for me and helping me to solve this issue. My apologies of this error can simply be chalked up to my own stupidity or carelessness.

If you want me to send the contents of any other files, results of commands, etc. I will be more than happy to send them.

Thanks,

sckzor