autoBuildO2.sh

#!/bin/bash

# --- Configuration ---
ALICE_WORK_DIR="$HOME/alice"
PACKAGE="O2Physics"
DEFAULTS="o2"
REQUIRED_SPACE_GB=200

echo "---------------------------------------------------"
echo " ALICE O2 & O2Physics Auto-Build"
echo " Status: Running..."
echo "---------------------------------------------------"

# 1. Directory Setup
# Create the directory if it doesn't exist and enter it
mkdir -p "$ALICE_WORK_DIR"
cd "$ALICE_WORK_DIR" || { echo "Error: Could not access $ALICE_WORK_DIR"; exit 1; }

# 2. Disk Space Check
AVAILABLE_SPACE=$(df -BG . | awk 'NR==2 {print $4}' | sed 's/G//')
echo "==> Checking storage: ${AVAILABLE_SPACE}GB available."
if [ "$AVAILABLE_SPACE" -lt "$REQUIRED_SPACE_GB" ]; then
    echo "!!! WARNING: You are below the recommended ${REQUIRED_SPACE_GB}GB."
    echo "    Continuing in 3 seconds..."
    sleep 3
fi

# 3. Sync Repositories (Fetch/Update)
sync_repo() {
    if [ ! -d "$1" ]; then
        echo "==> Cloning $1..."
        git clone "https://github.com/alisw/$1.git"
    else
        echo "==> Updating $1..."
        cd "$1" && git pull && cd ..
    fi
}

sync_repo "alidist"
sync_repo "O2"
sync_repo "O2Physics"

# 4. Official Deep Cleanup (The Three Lines)
# Cleans broken links and orphans to prevent build corruption
echo "==> Running Deep Cleanup..."
ARCH=$(aliBuild architecture)
find sw/"$ARCH"/ -mindepth 2 -maxdepth 2 -type l -delete 2>/dev/null
find sw/BUILD/ -mindepth 1 -maxdepth 1 -type l -delete 2>/dev/null
aliBuild clean

# 5. Clang Check (Build only if missing)
# Required for Coding Guidelines (clang-format)
if [ ! -d "sw/$ARCH/Clang" ]; then
    echo "==> Clang not found. Building for code formatting..."
    aliBuild build Clang --defaults "$DEFAULTS" -j $(nproc)
else
    echo "==> Clang already present. Skipping build."
fi

# 6. Main Build (O2Physics)
echo "---------------------------------------------------"
echo " Starting $PACKAGE Build..."
echo " Status: You will see the build progress below."
echo "---------------------------------------------------"

# We run this without redirection so you see the real-time status/progress
aliBuild build "$PACKAGE" --defaults "$DEFAULTS" -j $(nproc)

# 7. Final Notification
if [ $? -eq 0 ]; then
    echo ""
    echo "---------------------------------------------------"
    echo " SUCCESS: Build Finished!"
    echo " Enter environment: alienv enter $PACKAGE/latest"
    echo "---------------------------------------------------"
else
    echo ""
    echo "---------------------------------------------------"
    echo " ERROR: Build failed. Check the terminal output above."
    echo " Detailed logs are also available in sw/BUILD/"
    echo "---------------------------------------------------"
    exit 1
fi