Cross compile Swift package and embed into Buildroot

build-swift-package-buildroot.sh

#!/bin/sh

# Configuration
SWIFT_BUILD_MODE="${SWIFT_BUILD_MODE:=release}"

# exit for failures
set -e

# build swift package
echo "Build Swift Package"
HOST_SWIFT_SUPPORT_DIR="${BUILDROOT_SRCDIR}/output/host/usr/share/swift"
SWIFT_BIN="${HOST_SWIFT_SUPPORT_DIR}/bin/swift"
SWIFT_DESTINATION_FILE="${HOST_SWIFT_SUPPORT_DIR}/toolchain.json"

$SWIFT_BIN build --package-path ${SWIFT_PACKAGE_PATH} \
    --build-path ${SWIFT_PACKAGE_PATH}/.build \
    -c ${SWIFT_BUILD_MODE} \
    -Xswiftc -enable-testing \
    --destination ${SWIFT_DESTINATION_FILE} \
    --build-tests \
    -Xswiftc -enable-testing \

# Copy unit tests
cp ${SWIFT_PACKAGE_PATH}/.build/${SWIFT_BUILD_MODE}/*.xctest ${BUILDROOT_SRCDIR}/output/target/usr/bin/

# Rebuild Buildroot
cd $BUILDROOT_SRCDIR
echo "Build Buildroot"
make
cd ../