added build script for fuzzing

src/draco/tools/fuzz/build.sh

@@ -0,0 +1,35 @@
+#!/bin/bash -eu
+# 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.
+#
+################################################################################
+
+# build project
+cmake $SRC/draco
+# The draco_decoder and draco_encoder binaries don't build nicely with OSS-Fuzz
+# options, so just build the Draco shared libraries.
+make -j$(nproc) draco
+
+# build fuzzers
+for fuzzer in $(find $SRC/draco/src/draco/tools/fuzz -name '*.cc'); do
+  fuzzer_basename=$(basename -s .cc $fuzzer)
+  $CXX $CXXFLAGS \
+    -I $SRC/ \
+    -I $SRC/draco/src \
+    -I $WORK/ \
+    $LIB_FUZZING_ENGINE \
+    $fuzzer \
+    $WORK/libdraco.a \
+    -o $OUT/$fuzzer_basename
+done