#!/bin/bash -eu
# Copyright 2016 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.
#
################################################################################

echo "---------------------------------------------------------------"

if [ -z "${SANITIZER_FLAGS-}" ]; then
  FLAGS_VAR="SANITIZER_FLAGS_${SANITIZER}"
  export SANITIZER_FLAGS=${!FLAGS_VAR-}
fi

# compile script might override environment, use . to call it.
. compile_${FUZZING_ENGINE}

if [[ $SANITIZER_FLAGS = *sanitize=memory* ]]
then
  # Take all libraries from lib/msan
  # export CXXFLAGS_EXTRA="-L/usr/msan/lib $CXXFLAGS_EXTRA"
  cp -R /usr/msan/lib/* /usr/lib/
fi

# Coverage flag overrides.
COVERAGE_FLAGS_VAR="COVERAGE_FLAGS_$SANITIZER"
if [[ -n ${!COVERAGE_FLAGS_VAR-} ]]
then
  export COVERAGE_FLAGS="${!COVERAGE_FLAGS_VAR}"
fi

export CFLAGS="$CFLAGS $SANITIZER_FLAGS $COVERAGE_FLAGS"
export CXXFLAGS="$CFLAGS $CXXFLAGS_EXTRA"

echo "CC=$CC"
echo "CXX=$CXX"
echo "CFLAGS=$CFLAGS"
echo "CXXFLAGS=$CXXFLAGS"

echo "---------------------------------------------------------------"

BUILD_CMD="bash -eux $SRC/build.sh"
if [ "${BUILD_UID-0}" -ne "0" ]; then
  adduser -u $BUILD_UID --disabled-password --gecos '' builder
  chown -R builder $SRC $OUT $WORK
  su -c "$BUILD_CMD" builder
else
  $BUILD_CMD
fi