| #!/bin/bash |
| |
| # Copyright (C) 2019 The Android Open Source Project |
| # |
| # Licensed under the Apache License, Version 2.0 (the "License"); |
| # you may not use this file except in compliance with the License. |
| # You may obtain a copy of the License at |
| # |
| # http://www.apache.org/licenses/LICENSE-2.0 |
| # |
| # Unless required by applicable law or agreed to in writing, software |
| # distributed under the License is distributed on an "AS IS" BASIS, |
| # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| # See the License for the specific language governing permissions and |
| # limitations under the License. |
| |
| # Usage: |
| # build/build_abi.sh |
| # |
| # The following environment variables are considered during execution: |
| # |
| # ABI_OUT_TAG |
| # Customize the output file name for the abi dump. If undefined, the tag is |
| # derived from `git describe`. |
| |
| export ROOT_DIR=$(readlink -f $(dirname $0)/..) |
| |
| set -e |
| set -a |
| |
| source "${ROOT_DIR}/build/envsetup.sh" |
| |
| # inject CONFIG_DEBUG_INFO=y |
| export POST_DEFCONFIG_CMDS="${POST_DEFCONFIG_CMDS} : && update_config_for_abi_dump" |
| function update_config_for_abi_dump() { |
| ${KERNEL_DIR}/scripts/config --file ${OUT_DIR}/.config \ |
| -e CONFIG_DEBUG_INFO |
| (cd ${OUT_DIR} && \ |
| make O=${OUT_DIR} ${CC_LD_ARG} $archsubarch CROSS_COMPILE=${CROSS_COMPILE} olddefconfig) |
| } |
| |
| function version_greater_than() { |
| test "$(printf '%s\n' "$@" | sort -V | head -n 1)" != "$1"; |
| } |
| |
| # ensure that abigail is present in path |
| if ! ( hash abidiff 2>/dev/null); then |
| echo "ERROR: libabigail is not found in \$PATH at all!" |
| echo "Have you run build/abi/bootstrap and followed the instructions?" |
| exit 1 |
| fi |
| |
| # ensure we have a "new enough" version of abigail present before continuing |
| if ! ( version_greater_than "$(abidiff --version | awk '{print $2}')" \ |
| "1.6.0" ); then |
| echo "ERROR: no suitable libabigail (>= 1.6.0) in \$PATH." |
| echo "Have you run build/abi/bootstrap and followed the instructions?" |
| exit 1 |
| fi |
| |
| # delegate the actual build to build.sh |
| ABI_DEFINITION= ${ROOT_DIR}/build/build.sh $* |
| |
| echo "========================================================" |
| echo " Creating ABI dump" |
| |
| # create abi dump |
| COMMON_OUT_DIR=$(readlink -m ${OUT_DIR:-${ROOT_DIR}/out/${BRANCH}}) |
| id=${ABI_OUT_TAG:-$(git -C $KERNEL_DIR describe --dirty --always)} |
| abi_out_file=abi-${id}.xml |
| ${ROOT_DIR}/build/abi/dump_abi \ |
| --linux-tree $OUT_DIR \ |
| --out-file ${DIST_DIR}/${abi_out_file} |
| |
| # sanitize the abi.xml by removing any occurences of the kernel path |
| sed -i "s#${ROOT_DIR}/${KERNEL_DIR}/##g" ${DIST_DIR}/${abi_out_file} |
| # now also do that with any left over paths sneaking in |
| # (e.g. from the prebuilts) |
| sed -i "s#${ROOT_DIR}/##g" ${DIST_DIR}/${abi_out_file} |
| |
| ln -sf ${abi_out_file} ${DIST_DIR}/abi.xml |
| |
| echo "========================================================" |
| echo " ABI dump has been created at ${DIST_DIR}/${abi_out_file}" |
| |
| if [ -n "$ABI_DEFINITION" ]; then |
| echo "========================================================" |
| echo " Comparing ABI against expected definition ($ABI_DEFINITION)" |
| abi_report=${DIST_DIR}/abi.report |
| set +e |
| ${ROOT_DIR}/build/abi/diff_abi --baseline $KERNEL_DIR/$ABI_DEFINITION \ |
| --new ${DIST_DIR}/${abi_out_file} \ |
| --report ${abi_report} |
| rc=$? |
| set -e |
| echo "========================================================" |
| echo " ABI report has been created at ${abi_report}" |
| if [ $rc -ne 0 ] ; then |
| echo " ABI DIFFERENCES HAVE BEEN DETECTED! (RC=$rc)" |
| exit $rc |
| fi |
| fi |