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#!/bin/bash
# Copyright 2020 Google Inc.
#
# 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.
#
################################################################################
# If you ran this script as root against a local checkout, you may need to do
# the following to restore the Pigweed build environment before continuing
# development:
# $ cd $PW_ROOT
# $ sudo rm -rf .cipd/ .python3-env/ out/
# $ git reset --hard
# $ source ./bootstrap.sh
PW_ROOT="$SRC/pigweed"
BUILDROOT="$PW_ROOT/out/oss-fuzz"
mkdir -p $BUILDROOT
# Tweak the ensure file to skip downloading a bunch of build environment pieces
# that we won't use and/or that OSS-Fuzz wants to provide itself.
python $SRC/filter_cipd.py \
--root "$PW_ROOT" \
--json "$PW_ROOT/pw_env_setup/py/pw_env_setup/cipd_setup/pigweed.json" \
--excludes \
infra/cmake \
fuchsia/third_party/bazel \
pigweed/third_party/bloaty-embedded \
fuchsia/third_party/clang \
infra/go \
pigweed/third_party/protoc-gen-go \
pigweed/third_party/openocd \
fuchsia/rust \
pigweed/third_party/mingw64-x86_64-win32-seh \
pigweed/host_tools \
infra/goma/client \
fuchsia/third_party/qemu \
pigweed/third_party/kythe
# Pigweed checks that it can find these as part of a "sanity check".
mkdir -p "$PW_ROOT/.environment/cipd/pigweed/bin"
for b in arm-none-eabi-gcc bazel bloaty ; do
x="$PW_ROOT/.environment/cipd/pigweed/bin/$b"
if [[ ! -x $x ]] ; then
ln -s "$(which false)" "$x"
fi
done
# Setup the Pigweed build environemnt
set +u
PW_ENVSETUP_QUIET=1 source "$PW_ROOT/bootstrap.sh"
set -u
# -stdlib=libc++ conflicts with the -nostdinc++ used on pw_minimal_cpp_stdlib.
EXTRA_CXXFLAGS="-Wno-unused-command-line-argument"
# Disable UBSan vptr since target built with -fno-rtti.
EXTRA_CXXFLAGS+=" -fno-sanitize=vptr"
# Build!
CXXFLAGS="$CXXFLAGS $EXTRA_CXXFLAGS" LDFLAGS="$CXXFLAGS" \
gn gen "$BUILDROOT" \
--root="$PW_ROOT" \
--args="pw_toolchain_OSS_FUZZ_ENABLED=true
pw_toolchain_SANITIZERS=[\"$SANITIZER\"]"
ninja -C "$BUILDROOT" fuzzers
# Use build-generated metadata to identify available fuzzers
python "$SRC/extract_pw_fuzzers.py" --buildroot "$BUILDROOT" --out "$OUT/"
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