copy-linux-sysroot.sh

#!/bin/bash
# This script extracts updated native libraries form the prebuilt file.
# Our build machines tend to have old native libraries, hence we cannot
# run KMP native compiler on them. This script uses the KMP prebuilts which
# have the versions KMP compiler requires.
#
# The mapping of kotlin version to tar archieve is kept in linux-prebuilts.properties
# file which is created by the KonanPrebuiltsDownloader script (importMaven)

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

function usage {
      echo "Error: $1" >&2
      echo "Usage: ./copy-linux-sysroot.sh --kotlin-version <kotlin-version> --target-dir <out-libs-dir>
            Arguments:
            --kotlin-version: The kotlin version to use.
            --target-dir: The directory into which the native libraries will be exported.
      " >&2
      exit 1
}

SET_LIBRARY_PATH=false
while [ $# -gt 0 ]; do
    case $1 in
        -h|"-?")
            usage "Help:"
            ;;
        --kotlin-version)
            KOTLIN_VERSION=$2
            shift
            ;;
        --target-dir)
            SYSROOT_LIBS_TARGET=$2
            shift
            ;;
        *)
            usage "Unexpected parameter $1"
    esac
    shift
done

if [ -z "$KOTLIN_VERSION" ]
then
      usage "Missing kotlin-version argument"
else
      echo "kotlin version: $KOTLIN_VERSION" >&2
fi

if [ -z "$SYSROOT_LIBS_TARGET" ]
then
      usage "missing target-dir argument"
else
      echo "unzip dir: $SYSROOT_LIBS_TARGET" >&2
fi

# linux-prebuilts.properties includes the mappings from kotlin version to the konan
# prebuilt that includes the native libraries for the linux X86_64 host.
PREBUILTS_FILE=$(grep "$KOTLIN_VERSION=" $SCRIPT_DIR/linux-prebuilts.properties | cut -d "=" -f2)
if [ -z "$PREBUILTS_FILE" ]
then
    usage "Cannot find prebuilts file for $KOTLIN_VERSION"
fi
SYSROOT_PATH="$PREBUILTS_FILE/x86_64-unknown-linux-gnu/sysroot/lib"
echo "Prebuilts file: $PREBUILTS_FILE" >&2
TMP_DIR="$SYSROOT_LIBS_TARGET-extract"
mkdir -p $TMP_DIR
mkdir -p $SYSROOT_LIBS_TARGET
tar -xf $SCRIPT_DIR/$PREBUILTS_FILE.tar.gz --directory $TMP_DIR $SYSROOT_PATH
# move sysroot from the extracted files
cp -R $TMP_DIR/$SYSROOT_PATH/* $SYSROOT_LIBS_TARGET/.
rm -rf $TMP_DIR

echo "Unzipped sysroot libs into ${SYSROOT_LIBS_TARGET}" >&2