1 #!/bin/bash 2 3 # 4 # Copyright (C) 2016 The Android Open Source Project 5 # 6 # Permission is hereby granted, free of charge, to any person 7 # obtaining a copy of this software and associated documentation 8 # files (the "Software"), to deal in the Software without 9 # restriction, including without limitation the rights to use, copy, 10 # modify, merge, publish, distribute, sublicense, and/or sell copies 11 # of the Software, and to permit persons to whom the Software is 12 # furnished to do so, subject to the following conditions: 13 # 14 # The above copyright notice and this permission notice shall be 15 # included in all copies or substantial portions of the Software. 16 # 17 # THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, 18 # EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF 19 # MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND 20 # NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS 21 # BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN 22 # ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN 23 # CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE 24 # SOFTWARE. 25 # 26 27 # This shell-script checks the symbols in libavb.a and fails 28 # if a reference not starting with avb_ is referenced. It's intended 29 # to catch mistakes where the standard C library is inadvertently 30 # used. 31 32 set -e 33 34 SYMBOLS_FILE=$(mktemp /tmp/libavb_symbols.XXXXXXXXXX) 35 36 trap "rm -f '${SYMBOLS_FILE}'" EXIT 37 38 readelf --symbols --wide "${ANDROID_HOST_OUT}/obj/STATIC_LIBRARIES/libavb_intermediates/libavb.a" | \ 39 awk '$7 == "UND" && $8 != "" {print $8}' | \ 40 grep -v ^avb_ | \ 41 sort -u > "${SYMBOLS_FILE}" 42 43 # If this file is non-empty, it means that the library is using 44 # symbols not starting with "avb_". 45 if [ -s "${SYMBOLS_FILE}" ] ; then 46 echo "ERROR: $0: Unexpected symbols in libavb:" >&2 47 cat "${SYMBOLS_FILE}" >&2 48 exit 1 49 fi 50
