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#! /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
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