configure.sh

#!/bin/bash -e

SCRIPT_DIR="$( cd "$( dirname "${BASH_SOURCE[0]}" )" >/dev/null && pwd )"

# Source environment variables common between linux and the docker
source "${SCRIPT_DIR}/yocto.env"

# Source common functions and environment variables.
source "${SCRIPT_DIR}/common.env"

# Git URLs for Yocto Poky and Xilinx BSP
POKY_URL="https://github.com/nsat/poky.git"
POKY_SHA="3b8dc3a88e28546100a6b0b2f2cc37f44e619371"

OE_URL="https://github.com/nsat/meta-openembedded.git"
OE_SHA="be79b8b111a968efdbe5e1482d0c246d0b24763e"

XILINX_URL="https://github.com/nsat/meta-xilinx.git"
XILINX_SHA="5fccc46503e468ed024185ed032891799a31db58"

ADI_URL="https://github.com/nsat/meta-adi.git"
ADI_BRANCH="2018_R2"
ADI_SHA="ff56b3d8f34dd558895645da0894937de5a878e4"

# Git branch name for Yocto
YOCTO_BRANCH="sumo"

# Enters build directory
cd_build

# usage: clone_or_update directory git_url git_branch git_sha depth
# param1: directory to checkout to
# param2: url of git repository
# param3: branch of git repository to fetch/clone
# param4: sha to checkout
# param5: optional depth to pull, default full clone/fetch
function clone_or_update() {
    pwd
    dir=$1
    url=$2
    branch=$3
    sha=$4
    if [ -z "$5" ]; then
        depth=""
    else
        depth="--depth $5"
    fi

    echo "dir - $dir"
    echo "url - $url"
    echo "branch - $branch"
    echo "sha - $sha"
    echo "depth - $depth"
    
    if [ ! -d $dir ]; then
        echo "$dir does not exist - cloning"
        git clone $url --branch $branch $depth $dir
    fi

    pushd $dir &>/dev/null || error "Couldn't enter $dir"
    if ! (git checkout $sha); then
        echo "git checkout $sha failed - fetching..."
        if ! (git fetch $depth origin $branch && git checkout $sha); then
            echo "git fetch $depth origin $branch && git checkout $sha failed" 
            return 1
        fi
    fi

    # Simple check for dirty files, not comprehensive
    if [ "$(git diff --shortstat 2>/dev/null)" != "" ]; then
        warn "$dir is dirty"
    fi

    popd &>/dev/null || error "Couldn't pop $dir"

    return 0
}

# Clone Yocto Poky or verify that it already exists
print_step "Cloning Yocto Poky"
clone_or_update poky ${POKY_URL} ${YOCTO_BRANCH} ${POKY_SHA} 100 || error "Failed to get correct POKY version"

# Enter poky directory
pushd poky &>/dev/null || error "Couldn't enter poky directory"

# Clone meta-oe or verify that it already exists
print_step "Cloning meta-openembedded"
clone_or_update meta-openembedded ${OE_URL} ${YOCTO_BRANCH} ${OE_SHA} 200 \
    || error "Failed to get correct meta-oe version"

# Clone meta-xilinx or verify that it already exists
print_step "Cloning meta-xilinx"
clone_or_update meta-xilinx ${XILINX_URL} ${YOCTO_BRANCH} ${XILINX_SHA} 100 \
    || error "Failed to get correct meta-xilinx version"

# Clone meta-adi or verify that it already exists
print_step "Cloning meta-adi"
clone_or_update meta-adi ${ADI_URL} ${ADI_BRANCH} ${ADI_SHA} 100 \
    || error "Failed to get correct meta-adi version"

echo "SCRIPT_DIR - $SCRIPT_DIR"

# Link Spire-specific layers into poky directory
ln -sfn "${SCRIPT_DIR}/meta-spire"   "${LEMDIG_BUILD_DIR}/poky/" || error "Couldn't create link to meta-spire"
ln -sfn "${SCRIPT_DIR}/meta-lemdig2" "${LEMDIG_BUILD_DIR}/poky/" || error "Couldn't create link to meta-lemdig2"
ln -sfn "${SCRIPT_DIR}/meta-lemsdr"  "${LEMDIG_BUILD_DIR}/poky/" || error "Couldn't create link to meta-lemsdr"

# Make Yocto build directory and setup configuration symlinks
mkdir -p "${LEMDIG_BUILD_DIR}/poky/build/conf/include" || error "Couldn't create conf directory"
ln -sfn "${SCRIPT_DIR}/conf/include/profile.inc" "${LEMDIG_BUILD_DIR}/poky/build/conf/include/profile.inc" || error "Couldn't link to profile.inc"
ln -sfn "${SCRIPT_DIR}/conf/site.conf"           "${LEMDIG_BUILD_DIR}/poky/build/conf/site.conf"           || error "Couldn't link to site.conf"
ln -sfn "${SCRIPT_DIR}/conf/local.conf"          "${LEMDIG_BUILD_DIR}/poky/build/conf/local.conf"          || error "Couldn't link to local.conf"
ln -sfn "${SCRIPT_DIR}/conf/bblayers.conf"       "${LEMDIG_BUILD_DIR}/poky/build/conf/bblayers.conf"       || error "Couldn't link to bblayers.conf"

# Populate auto.conf Bitbake configuration file
autoconf_path="${LEMDIG_BUILD_DIR}/poky/build/conf/auto.conf"
echo "# Automatically generated by lemdig/scripts/configure.sh; do not edit." > "${autoconf_path}"
echo "SPIRE_AIR_DIR = \"${SCRIPT_DIR}\"" >> "${autoconf_path}"
echo "AIR_BUILD_SIG = \"${AIR_BUILD_SIG:-Unspecified}\"" >> "${autoconf_path}"
echo "SSTATE_DIR = \"${YOCTO_SSTATE_DIR}\"" >> "${autoconf_path}"
echo "DL_DIR = \"${YOCTO_DL_DIR}\"" >> "${autoconf_path}"
if [ -n "${YOCTO_SSTATE_MIRRORS}" ]; then
    echo "SSTATE_MIRRORS = \"${YOCTO_SSTATE_MIRRORS}\"" >> "${autoconf_path}"
fi

# manifest.bb variables
PAYLOAD_VERSION_PATH="/lemdig/meta-spire/classes/$LEMDIG_PROFILE/VERSION"
echo "PAYLOAD_NAME=\"$LEMDIG_PROFILE\"" >> ${autoconf_path}
echo "YOCTO_BRANCH=\"$YOCTO_BRANCH\"" >> ${autoconf_path}
echo "GIT_COMMIT=\"$(git rev-parse HEAD)\"" >> ${autoconf_path}
echo "PAYLOAD_VERSION=\"$(<$PAYLOAD_VERSION_PATH)\"" >> ${autoconf_path}

# fpga-dto-util.bb
echo "LEMDIG_FPGA_DTO_DIR=\"$LEMDIG_FPGA_DTO_DIR\"" >> ${autoconf_path}