VERSION=$(sh "${SCRIPT_DIR}"/get-pEp-version.sh "CAP_N_PROTO_VERSION")
REPO_NAME="capnproto"
LIB_NAME="libcapnp.a"

OUTPUT_DIR=${SCRIPT_DIR}/build

# Exit on errors
set -e

if [ -f "${LIB_DIR}/${LIB_NAME}" ]; then
    echo "lib exists already in ${LIB_DIR}. If you want to rebuild it, delete the existing one."
    exit 0
fi

REPO_SRC_DIR="${TMP_DIR}/${REPO_NAME}/c++"
if [ ! -d "${REPO_SRC_DIR}" ]; then
	git clone -b "${VERSION}" https://github.com/capnproto/capnproto.git
fi

###########################################################################
# Needed for build
# Note: this cap'n proto isntallation is only used (and MUST only be used) 
# for (cross) _building_ the cap'n proto static libs (i.e. it's the 
# installation used by `--with-external-capnp` in the actual builds below). 
# It is *not* used (and MUST NOT be used) anywhere else.
###########################################################################
CAPNPROTO_USED_FOR_BUILD_PREFIX="${TMP_DIR}/tmpLocal"
mkdir -p "${CAPNPROTO_USED_FOR_BUILD_PREFIX}"
CPNP_BINARY_USED_FOR_BUILD="${CAPNPROTO_USED_FOR_BUILD_PREFIX}/bin/capnp"

if [ ! -f "${CPNP_BINARY_USED_FOR_BUILD}" ]; then
	pushd "${REPO_SRC_DIR}"
		autoreconf -i
		./configure --prefix="${CAPNPROTO_USED_FOR_BUILD_PREFIX}"
		make clean
		make -j6
		make install
	popd
fi

export CAPNP=${CPNP_BINARY_USED_FOR_BUILD}

###########################################################################
# Build the actual libs
###########################################################################

export LDFLAGS="-arch ${ARCH}"
export CC="$(xcrun --sdk ${SDK} -f clang) -arch ${ARCH} -isysroot ${SDK_PATH}"
export CXX="$(xcrun --sdk ${SDK} -f clang++) -arch ${ARCH} -isysroot ${SDK_PATH}"

pushd ${REPO_SRC_DIR}
	autoreconf -i
	./configure --with-external-capnp --host=${HOST} --prefix=${CURRENT_LIB_DIR} --enable-static=yes --enable-shared=no
	make clean
	make -j6
	make install
popd

unset CAPNP