| #! /bin/sh |
| # |
| # SPDX-License-Identifier: BSD-2-Clause |
| # |
| # Copyright (c) 2018-2023 Gavin D. Howard and contributors. |
| # |
| # Redistribution and use in source and binary forms, with or without |
| # modification, are permitted provided that the following conditions are met: |
| # |
| # * Redistributions of source code must retain the above copyright notice, this |
| # list of conditions and the following disclaimer. |
| # |
| # * Redistributions in binary form must reproduce the above copyright notice, |
| # this list of conditions and the following disclaimer in the documentation |
| # and/or other materials provided with the distribution. |
| # |
| # THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" |
| # AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
| # IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
| # ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE |
| # LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR |
| # CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF |
| # SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS |
| # INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN |
| # CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) |
| # ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE |
| # POSSIBILITY OF SUCH DAMAGE. |
| # |
| |
| # Just print the usage and exit with an error. This can receive a message to |
| # print. |
| # @param 1 A message to print. |
| usage() { |
| if [ $# -eq 1 ]; then |
| printf '%s\n\n' "$1" |
| fi |
| printf 'usage: %s [-a] [afl_compiler]\n' "$0" |
| printf '\n' |
| printf ' If -a is given, then an ASan ready build is created.\n' |
| printf ' Otherwise, a normal fuzz build is created.\n' |
| printf ' The ASan-ready build is for running under\n' |
| printf ' `tests/afl.py --asan`, which checks that there were no\n' |
| printf ' memory errors in any path found by the fuzzer.\n' |
| printf ' It might also be useful to run scripts/randmath.py on an\n' |
| printf ' ASan-ready binary.\n' |
| exit 1 |
| } |
| |
| script="$0" |
| scriptdir=$(dirname "$script") |
| |
| . "$scriptdir/functions.sh" |
| |
| asan=0 |
| |
| # Process command-line arguments. |
| while getopts "a" opt; do |
| |
| case "$opt" in |
| a) asan=1 ;; |
| ?) usage "Invalid option: $opt" ;; |
| esac |
| |
| done |
| shift $(($OPTIND - 1)) |
| |
| if [ $# -lt 1 ]; then |
| CC=afl-clang-lto |
| else |
| CC="$1" |
| fi |
| |
| # We want this for extra sensitive crashing |
| AFL_HARDEN=1 |
| |
| cd "$scriptdir/.." |
| |
| set -e |
| |
| CFLAGS="-flto -fstack-protector-all -fsanitize=shadow-call-stack -ffixed-x18 -fsanitize=cfi -fvisibility=hidden" |
| |
| if [ "$asan" -ne 0 ]; then |
| CFLAGS="$CFLAGS -fsanitize=address" |
| fi |
| |
| # These are to get better instrumentation. |
| export AFL_LLVM_LAF_SPLIT_SWITCHES=1 |
| export AFL_LLVM_LAF_TRANSFORM_COMPARES=1 |
| export AFL_LLVM_LAF_SPLIT_COMPARES=1 |
| |
| # We want a debug build because asserts are counted as crashes too. |
| CC="$CC" CFLAGS="$CFLAGS" ./configure.sh -gO3 -z |
| |
| make -j16 |