#!/usr/bin/env bash
# Copyright (c) 2020 The Bitcoin Core developers
# Distributed under the MIT software license, see the accompanying
# file COPYING or http://www.opensource.org/licenses/mit-license.php.

export LC_ALL=C.UTF-8

set -e

ROOT_DIR="$(git rev-parse --show-toplevel)"

# Run only once (break make recursion)
if [ -d "${ROOT_DIR}/lock_fuzz_link_all" ]; then
  exit
fi
mkdir "${ROOT_DIR}/lock_fuzz_link_all"

echo "Linking each fuzz target separately."
for FUZZING_HARNESS in $(PRINT_ALL_FUZZ_TARGETS_AND_ABORT=1 "${ROOT_DIR}/src/test/fuzz/fuzz" | sort -u); do
    echo "Building src/test/fuzz/${FUZZING_HARNESS} ..."
    git checkout -- "${ROOT_DIR}/src/test/fuzz/fuzz.cpp"
    sed -i "s/std::getenv(\"FUZZ\")/\"${FUZZING_HARNESS}\"/g" "${ROOT_DIR}/src/test/fuzz/fuzz.cpp"
    make
    mv "${ROOT_DIR}/src/test/fuzz/fuzz" "${ROOT_DIR}/src/test/fuzz/${FUZZING_HARNESS}"
done
git checkout -- "${ROOT_DIR}/src/test/fuzz/fuzz.cpp"
rmdir "${ROOT_DIR}/lock_fuzz_link_all"
echo "Successfully built all fuzz targets."