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#!/bin/sh -eux
#
# This is not a general-purpose build script, but instead one specific to the Google oss-fuzz compile environment.
#
# https://google.github.io/oss-fuzz/getting-started/new-project-guide/#Requirements
#
# https://github.com/google/oss-fuzz/blob/master/infra/base-images/base-builder/README.md#provided-environment-variables
#
# We have to push to oss-fuzz CFLAGS into the waf ADDITIONAL_CFLAGS
# as otherwise waf's configure fails linking the first test binary
#
# CFLAGS are supplied by the caller, eg the oss-fuzz compile command
#
# Additional arguments are passed to configure, to allow this to be
# tested in autobuild.py
#
ADDITIONAL_CFLAGS="$CFLAGS"
export ADDITIONAL_CFLAGS
CFLAGS=""
export CFLAGS
LD="$CXX"
export LD
# $SANITIZER is provided by the oss-fuzz "compile" command
#
# We need to add the waf configure option as otherwise when we also
# get (eg) -fsanitize=address via the CFLAGS we will fail to link
# correctly
case "$SANITIZER" in
address)
SANITIZER_ARG='--address-sanitizer'
;;
undefined)
SANITIZER_ARG='--undefined-sanitizer'
;;
coverage)
SANITIZER_ARG=''
;;
esac
# $LIB_FUZZING_ENGINE is provided by the oss-fuzz "compile" command
#
./configure -C --without-gettext --enable-debug --enable-developer \
--enable-libfuzzer \
$SANITIZER_ARG \
--disable-warnings-as-errors \
--abi-check-disable \
--fuzz-target-ldflags="$LIB_FUZZING_ENGINE" \
--nonshared-binary=ALL \
"$@" \
LINK_CC="$CXX"
make -j
# Make a directory for the system shared libraries to be copied into
mkdir -p $OUT/lib
# We can't static link to all the system libs with waf, so copy them
# to $OUT/lib and set the rpath to point there. This is similar to how
# firefox handles this.
for x in bin/fuzz_*
do
cp $x $OUT/
bin=`basename $x`
# Copy any system libraries needed by this fuzzer to $OUT/lib
ldd $OUT/$bin | cut -f 2 -d '>' | cut -f 1 -d \( | cut -f 2 -d ' ' | xargs -i cp \{\} $OUT/lib/
# Change RUNPATH so that the copied libraries are found on the
# runner
chrpath -r '$ORIGIN/lib' $OUT/$bin
# Truncate the original binary to save space
echo -n > $x
done
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