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Initial commit: build env for the Ubtouch OS

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USE_CCACHE=1
CCACHE_DIR=/workspace/.ccache
CLEAN_BUILD="true"

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!.gitignore
.idea
brax3
.ccache
build.log
venv

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# Use specific Ubuntu version for reproducibility
FROM ubuntu:22.04
LABEL maintainer="Brax <support@braxtech.net>" \
description="Ubuntu Touch OS build environment" \
version="1.0"
# Set build arguments for flexibility
ARG CCACHE_SIZE=10G
ARG DEBIAN_FRONTEND=noninteractive
ARG TZ=UTC
# Environment variables
ENV DEBIAN_FRONTEND=${DEBIAN_FRONTEND} \
TZ=${TZ} \
USE_CCACHE=1 \
CCACHE_EXEC=/usr/bin/ccache \
JAVA_HOME=/usr/lib/jvm/java-11-openjdk-amd64
# Set timezone to prevent tzdata interactive prompt
RUN ln -snf /usr/share/zoneinfo/$TZ /etc/localtime && \
echo $TZ > /etc/timezone
# Update package lists and install essential packages
RUN dpkg --add-architecture i386 && \
apt-get update && \
apt-get install --no-install-recommends -y \
# Build essentials \
software-properties-common \
bc \
bison \
build-essential \
ccache \
curl \
git \
gnupg \
ca-certificates \
cpio \
curl \
fakeroot \
flex \
kmod \
libelf-dev \
libssl-dev \
libtinfo5 \
lz4 \
python3 \
sudo \
img2simg \
simg2img \
unzip \
zip \
wget \
zstd \
jq \
libncurses5 \
imagemagick \
liblz4-tool \
schedtool \
xsltproc \
rsync \
libxml2-utils \
python3-markdown \
tofrodos \
python2 \
gperf \
bzr \
libc6-dev \
libncurses5-dev:i386 \
x11proto-core-dev \
libx11-dev:i386 \
libreadline6-dev:i386 \
libgl1-mesa-glx:i386 \
libgl1-mesa-dev \
g++-multilib \
mingw-w64-i686-dev \
zlib1g-dev:i386 \
lzop \
xz-utils && \
# Clean up package cache
apt-get autoclean && \
rm -rf /var/lib/apt/lists/*
# python 2 is required for some android build tools
RUN update-alternatives --install /usr/bin/python python /usr/bin/python2 1
# Download and install Android platform-tools
RUN mkdir -p /opt/platform-tools && \
cd /opt/platform-tools && \
wget -q https://dl.google.com/android/repository/platform-tools-latest-linux.zip && \
unzip -q platform-tools-latest-linux.zip && \
rm platform-tools-latest-linux.zip && \
mv platform-tools/* . && \
rmdir platform-tools && \
chmod +x adb fastboot
# Add platform-tools to PATH
ENV PATH="/opt/platform-tools:${PATH}"
# Configure ccache
RUN ccache -M ${CCACHE_SIZE} && \
ccache -s
# Create workspace directory with proper ownership
RUN mkdir -p /workspace && \
chown -R ${BUILD_USER}:${BUILD_USER} /workspace
# Copy and set up entrypoint script
COPY --chown=root:root docker-entrypoint.sh /usr/local/bin/docker-entrypoint
COPY --chown=root:root docker-build.sh /usr/local/bin/docker-build
RUN chmod +x /usr/local/bin/docker-entrypoint && \
chmod +x /usr/local/bin/docker-build
# Switch to non-root user for security
USER root
WORKDIR /workspace
# Set up user-specific configurations
RUN echo 'export USE_CCACHE=1' >> ~/.bashrc && \
echo 'export CCACHE_EXEC=/usr/bin/ccache' >> ~/.bashrc
# Set entrypoint and default command
ENTRYPOINT ["docker-entrypoint"]
CMD ["/bin/bash"]

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# Flashing Ubuntu Touch on BraX3
Follow these steps carefully to flash Ubuntu Touch images onto your BraX3 device.
---
## Prerequisites
- **ADB** and **Fastboot** tools must be installed on your computer.
- Device must have **LunarOS** installed.
- **USB Debugging** enabled (Settings → Developer Options → USB Debugging).
- **Unlock the Bootloader**.
> Follow the official guide
here: [How to Unlock the Bootloader of Your BraX3](https://community.braxtech.net/t/how-to-unlock-the-bootloader-of-your-brax3/45).
---
## Flashing Steps
1. Connect your device and verify it is detected:
```bash
adb devices
```
2. Reboot into fastboot mode:
```bash
adb reboot fastboot
```
3. Set Device Slot to **slot a**:
```bash
fastboot --set-active=a
```
4. Flash the **system image**:
```bash
fastboot flash system ubuntu.img
```
5. Reboot bootloader:
```bash
fastboot reboot bootloader
```
6. Flash the **boot partitions**:
```bash
fastboot flash boot_a boot.img
fastboot flash boot_b boot.img
```
7. Flash the **init_boot partitions**:
```bash
fastboot flash init_boot_a init_boot.img
fastboot flash init_boot_b init_boot.img
```
8. Wipe and format userdata for Ubuntu Touch:
```bash
fastboot -w
fastboot format:ext4 userdata
```
9. Reboot the device:
```bash
fastboot reboot
```
> Just make sure your fastboot/adb version is >= 35.0.2-12147458s.
> First Ubuntu Touch boot may take 5–8 minutes.
---
## Troubleshooting
* **Device not detected by `adb` or `fastboot`**:
* Check your USB cable and port.
* Install proper USB drivers if on Windows.
* Make sure USB Debugging is enabled in Developer Options.
* **Bootloop after flashing**:
* Recheck that you flashed all images in the correct order.
* Confirm that you used the **latest platform tools**.
* **Still stuck?**
Contact us or ask your question on the [BraxTech Community Forum](https://community.braxtech.net/).
---
## Completion
After the process is complete, reboot your device. Ubuntu Touch should now be installed on your BraX3. 🎉
```

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# How to Build UbtouchOS with Docker
## Why Docker?
Using Docker ensures all required dependencies are pre-installed and properly configured.
You don’t need to install complex toolchains or modify your host system.
---
## Requirements
### Software
- **Docker**
Install Docker using the official script:
```bash
curl -fsSL https://get.docker.com | sh
```
- **Git**
[Install Git](https://git-scm.com/book/en/v2/Getting-Started-Installing-Git)
- **Repo tool**
Install the Google `repo` tool:
```bash
mkdir -p ~/bin
curl https://storage.googleapis.com/git-repo-downloads/repo > ~/bin/repo
chmod a+x ~/bin/repo
export PATH=~/bin:$PATH
```
### Hardware
- **Disk:** \~30 GB (source code and build artifacts). SSD recommended
- **CPU:** 64-bit processor (Intel i5/i7 or AMD Ryzen 5/7 and above recommended, 8 cores or more preferred)
- **Memory:**
* Minimum: 16 GB RAM
* Bare minimum: 8 GB RAM (with swap; builds will be very slow and unstable)
---
## Usage
1. **Clone this repo** to your local machine and navigate into it:
```bash
git clone https://git.os-source.co/UbuntuTouchOs/build.git
cd build
```
2. **Clone the brax3 ubports** into the `UbuntuTouchOs/build` checkout directory:
```bash
git clone https://git.os-source.co/UbuntuTouchOs/brax3-ubports brax3
```
3. **Start the build with Docker**:
```bash
docker compose up -d
```
4. **Check the build logs and wait**:
```bash
docker logs -f repo_build_ubtouch
```
5. Once the "success message" appears in the logs (this typically takes 10-30 minutes, depending on your hardware,
navigate to the brax3/out folder to find your fastboot images:
```bash
ls -la brax3/out | grep ubuntu.img
-rw-r--r-- 1 root root 1433058439 Sep 23 16:50 ubuntu.img
```
6. After building, follow the flashing instructions in [HOW_TO_FLASH.md](HOW_TO_FLASH.md) to install the images onto your phone.
---
## Licensing
LunarOS/build is licensed under the **Apache License, Version 2.0**.
See [LICENSE](LICENSE) for the full license text.

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#!/bin/bash
set -euo pipefail
# ===============================
# CONFIGURATION
# ===============================
CLEAN_BUILD="${CLEAN_BUILD:-false}"
HALIUM_REPO="${HALIUM_REPO:-https://gitlab.com/ubports/porting/community-ports/halium-generic-adaptation-build-tools.git}"
HALIUM_BRANCH="${HALIUM_BRANCH:-main}"
WORKDIR="$(pwd)"
OUTDIR="${WORKDIR}/out"
OTADIR="${WORKDIR}/ota"
BUILDDIR="${WORKDIR}/build"
# ===============================
# LOGGING FUNCTIONS
# ===============================
log() {
echo "[$(date +'%Y-%m-%d %H:%M:%S')] $*" >&2
}
cleanup() {
local exit_code=$?
if [ $exit_code -ne 0 ]; then
log "Build failed with exit code $exit_code"
fi
}
trap cleanup EXIT
# ===============================
# PREPARE BUILD ENV
# ===============================
if [ "$CLEAN_BUILD" = "true" ]; then
log "Performing clean build: removing previous artifacts"
rm -rf "$OUTDIR" "$OTADIR" "$BUILDDIR"
else
log "Incremental build enabled (set CLEAN_BUILD=true to force wipe)"
fi
mkdir -p "$OUTDIR" "$OTADIR"
# ===============================
# CLONE HALIUM TOOLS
# ===============================
if [ ! -d "$BUILDDIR" ]; then
log "Cloning Halium build tools from $HALIUM_REPO (branch: $HALIUM_BRANCH)"
git clone -b "$HALIUM_BRANCH" "$HALIUM_REPO" "$BUILDDIR"
else
log "Halium build tools already present, pulling latest changes"
(cd "$BUILDDIR" && git fetch && git checkout "$HALIUM_BRANCH" && git pull --rebase) || true
fi
# ===============================
# BUILD KERNEL
# ===============================
log "Starting kernel build..."
"$BUILDDIR/build.sh"
log "Kernel build completed successfully"
# ===============================
# ROOTFS & OTA PREP
# ===============================
DATETIME=$(date +%Y%m%d-%H%M)
DEVICE="$(source deviceinfo && echo "$deviceinfo_codename")"
log "Preparing OTA for device: $DEVICE"
"$BUILDDIR/prepare-fake-ota.sh" "$OUTDIR/device_${DEVICE}.tar.xz" "$OTADIR"
log "Generating system image..."
"$BUILDDIR/system-image-from-ota.sh" "$OTADIR/ubuntu_command" "$OUTDIR"
mv "$OUTDIR/rootfs.img" "$OUTDIR/ubuntu.img"
# ===============================
# PACKAGE ARTIFACTS
# ===============================
cd "$OUTDIR"
log "Compressing ubuntu.img with zstd..."
rm -f ubuntu.img.zst
log "Cleaning generated {init}/boot artifacts inorder to use prebuilt ones"
rm -rf boot.img init_boot.img
log "Copying prebuilt artifacts"
cp -r ../boot.img .
cp -r ../init_boot.img .
zstd -q -f ubuntu.img
ZIPNAME="ubuntu-touch-${DEVICE}-${DATETIME}.zip"
log "Creating flashable zip: $ZIPNAME"
zip -r9 "$ZIPNAME" boot.img init_boot.img *.zst
cd "$WORKDIR"
# ===============================
# DONE
# ===============================
log "======================================="
log "Build completed successfully!"
log "Artifacts available in: $OUTDIR"
ls -lh "$OUTDIR"
log "======================================="

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services:
repo-build-ubtouch:
build:
context: .
dockerfile: Dockerfile
image: registry.os-source.co/os-build/ubtouch-os:0.9
container_name: repo_build_ubtouch
command: "docker-build"
restart: "no"
env_file:
- .env
volumes:
- ./:/workspace
- ccache_data:/workspace/.ccache
working_dir: /workspace/brax3
tty: true
stdin_open: true
init: true
networks:
- build_network
volumes:
ccache_data:
driver: local
name: ubtouchos_ccache
networks:
build_network:

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#!/bin/bash
set -euo pipefail
# Function to log messages with timestamp
log() {
echo "[$(date +'%Y-%m-%d %H:%M:%S')] $*" >&2
}
# Function to handle cleanup on exit
cleanup() {
local exit_code=$?
if [ $exit_code -ne 0 ]; then
log "Build process exited with code: $exit_code"
# Optional: Save ccache stats on failure
if command -v ccache >/dev/null 2>&1; then
log "Final ccache stats:"
ccache -s
fi
fi
}
# Set up signal handlers
trap cleanup EXIT
trap 'log "Received SIGTERM, shutting down gracefully..."; exit 143' TERM
trap 'log "Received SIGINT, shutting down gracefully..."; exit 130' INT
# Initialize environment
log "Initializing build environment for user: $(whoami)"
# Ensure proper ownership of workspace
if [ -d "/workspace" ] && [ -w "/workspace" ]; then
log "Workspace permissions verified"
else
log "Warning: Workspace permissions may be incorrect"
fi
# Display ccache status
if command -v ccache >/dev/null 2>&1; then
log "ccache status:"
ccache -s
fi
# Display Python versions
if command -v python3 >/dev/null 2>&1; then
log "Python 3 version: $(python3 --version 2>&1)"
fi
if command -v python2 >/dev/null 2>&1; then
log "Python 2 version: $(python2 --version 2>&1)"
fi
if command -v python >/dev/null 2>&1; then
log "Python version: $(python --version 2>&1)"
fi
# Display system info for debugging
log "System info - Cores: $(nproc), Memory: $(free -h | awk '/^Mem:/ {print $2}')"
# Set optimal make flags if not already set
if [ -z "${MAKEFLAGS:-}" ]; then
export MAKEFLAGS="-j$(nproc)"
log "Set MAKEFLAGS to: $MAKEFLAGS"
fi
# If no arguments provided, start interactive bash
if [ $# -eq 0 ]; then
log "Starting interactive bash session"
exec /bin/bash
fi
# Define log file path
BUILD_LOG="/workspace/build.log"
# Clean previous logs
: > "$BUILD_LOG" # This truncates the file without deleting it
# Or, alternatively: rm -f "$BUILD_LOG" && touch "$BUILD_LOG"
log "Executing command: $*"
# Run command, tee stdout/stderr to build.log and still display in docker logs
"$@" > >(tee -a "$BUILD_LOG") 2> >(tee -a "$BUILD_LOG" >&2)
exit_code=$?
log "Command exited with code $exit_code"
exit $exit_code