#!/bin/bash

set -e

source "${BUILD_SCRIPT_ROOT}"/helpers
setup-repo-vars

#Translate
#  https://android-build.linaro.org/jenkins/job/doanac_build-script-generation/6/
# into
#  http://snapshots.linaro.org/android/~doanac/build-script-generation/6/
SNAPSHOT_URL=${BUILD_URL/http*jenkins\/job\//http://snapshots.linaro.org/android/~}
# change the dash in doanac_build... to doanac/build...
SNAPSHOT_URL=${SNAPSHOT_URL/_/\/}

header()
{
	cat <<EOF
#!/bin/bash

set -e

EXACT=1
DIR=linaro-kernel

CPUS=\`grep -c processor /proc/cpuinfo\`

usage()
{
	echo 'Usage: \$0 [ -t -d directory ]'
	echo " -t                Reproduce the from the tip of the branch rather than doing"
	echo "                   an exact replica build"
	echo " -d <directory>    The directory to download code and build from"
	echo "                   Default: \${DIR}"
	exit 1
}

while getopts   "d:ht" optn; do
	case    \$optn   in
		d   ) DIR=\$OPTARG;;
		t   ) EXACT=0;;
		h   ) usage; exit 1;;
        esac
done

EOF
}

sync_commands()
{
GITINFO=`PYTHONPATH=../.repo/repo ${BUILD_SCRIPT_ROOT}/repo_project_info.py -d ../`
GITURL=`echo $GITINFO | cut -d\| -f1`
GITREV=`echo $GITINFO | cut -d\| -f2`
	cat <<EOF
# download the kernel
if [ -d \${DIR} ] ; then
	echo "Directory \${DIR} exists. If the kernel code exists in this directory you may continue without cloning the git repository for the kernel. Are you sure you want to do this? (y/n) "
	read CONTINUE
	[ \${CONTINUE} == y ] || exit 1
else
	git clone $GITURL \$DIR
fi

cd \$DIR
git checkout $GITREV

# download the kernel config
curl -q $SNAPSHOT_URL/kernel_config > linaro_kernel_config

EOF
}

build_commands()
{
	cat <<EOF
# build the code
CROSS_COMPILE=\`which arm-linux-gnueabi-gcc |sed -e 's,gcc,,'\`
[ -d out ] || mkdir out
[ -f out/.config ] || cp linaro_kernel_config out/.config
make -j\${CPUS} O=out ARCH=arm CROSS_COMPILE=\$CROSS_COMPILE uImage modules
mkdir out/modules_for_android
make O=out ARCH=arm modules_install INSTALL_MOD_PATH=modules_for_android
EOF
}

{
	header
	sync_commands
	build_commands
} > linaro_kernel_build_cmds.sh
chmod +x linaro_kernel_build_cmds.sh