build_pineapple.sh

#!/bin/bash

top=$(pwd)

#use binwalk
extract_firmware() {
    binwalk -e "$top"/upgrade-"$upstream_version".bin
    echo "$upstream_version" > "$top"/configs/.upstream_version
    mkdir openwrt-cc/files
    cp -r "$top"/_upgrade-"$upstream_version".bin.extracted/squashfs-root/* "$top"/openwrt-cc/files/
    rm -rf "$top"/openwrt-cc/files/lib/modules/*
    rm -rf "$top"/openwrt-cc/files/sbin/modprobe
}

apt_get() {
    # Clean this up
    sudo apt-get update
    sudo apt-get install -y \
    git build-essential zlib1g-dev liblzma-dev python-magic subversion g++-6 \
    libncurses5-dev gawk flex quilt curl wget gcc binutils bzip2 python2.7 python-pip  \
    libssl1.0-dev xsltproc libxml-parser-perl mercurial bzr ecj cvs unzip binwalk \
    make grep diffutils libc6 time perl
}

install_binwalk() {
    cd "$top/binwalk"
    ./deps.sh
    sudo python setup.py install
    cd "$top"
}

first_run() {
    cd "$top"
    apt_get
    git submodule update --recursive --remote
    wget https://www.wifipineapple.com/downloads/nano/latest -O upgrade-"$upstream_version".bin
    touch "$top"/configs/.upstream_version
    cp "$top"/configs/gl-ar150-defconfig "$top"/openwrt-cc/.config
    mkdir "$top"/firmware_images
    extract_firmware
}

install_scripts() {
    echo "updating openwrt"
    cd "$top/openwrt-cc"
    ./scripts/feeds update -a
    ./scripts/feeds install -a
}

build_firmware() {
    echo "Everything is ready to start the build, grab some coffe this can take a long time (90 minutes or more!)"
    sleep 3
    cd "$top/openwrt-cc"
    make download
    make -j$(cat /proc/cpuinfo | grep "^processor" | wc -l)
    for line in $(find "$top/openwrt-cc/bin" -name "*-sysupgrade.bin"); do
        cp "$line" "$top/firmware_images/wifi-pineapple-$upstream_version-gl-ar150-sysupgrade.bin"
        echo "[*] New build ready at -"$top"/firmware_images/wifi-pineapple-"$upstream_version"-gl-ar150-sysupgrade.bin"
    done
    cd "$top"
}

full_build() {
    upstream_version=`curl -s https://www.wifipineapple.com/downloads/nano/ | \
            python -c "import sys, json; print(json.load(sys.stdin)['version'])"`
    current_version=`cat "$top"/configs/.upstream_version`

    if [ -f ""$top"/configs/.upstream_version" ]; then
        echo "config file found, Upstream version="$upstream_version" and latest build="$current_version". No need to update. Want to force a rebuild? Use -f."
        cd "$top"
        echo "updating submodules to make sure there is a fresh build ready if needed."
        git submodule update --remote
        exit
    else
        echo "config file not found, running for the first time"
        first_run
    fi
    
    if [ "$upstream_version" > "$current_version" ]; then
        echo "extracting firmware now."
        extract_firmware
    fi
    install_scripts
    make defconfig
    build_firmware
}

if [ "$1" = "-f" ]; then
    echo "forcing new build."
    rm "$top"/configs/.upstream_version
    cp "$top"/configs/gl-ar150-defconfig "$top"/openwrt-cc/.config
    full_build
elif
    [ "$1" = "-c" ]; then
    current_version=`cat "$top"/configs/.upstream_version`
    echo "cleaning up..."
    rm -rf "$top"/_upgrade-"$current_version".bin.extracted/
    rm -rf "$top"/upgrade-"$current_version".bin
    cd "$top"/openwrt-cc
    make dirclean
    rm -f .config
    rm -rf files
    cd "$top"
    echo "all cleaned up, do you want to rerun the build? Use -f"
elif
    [ -z "$1" ]; then
    cp "$top"/configs/gl-ar150-defconfig "$top"/openwrt-cc/.config
    full_build
fi