3 # Copyright 2017-2018 Glenn Randers-Pehrson
4 # Copyright 2016 Google Inc.
6 # Licensed under the Apache License, Version 2.0 (the "License");
7 # you may not use this file except in compliance with the License.
8 # You may obtain a copy of the License at
10 # http://www.apache.org/licenses/LICENSE-2.0
12 # Unless required by applicable law or agreed to in writing, software
13 # distributed under the License is distributed on an "AS IS" BASIS,
14 # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
15 # See the License for the specific language governing permissions and
16 # limitations under the License.
18 # Revisions by Glenn Randers-Pehrson, 2017:
19 # 1. Build only the library, not the tools (changed "make -j$(nproc) all" to
20 # "make -j$(nproc) libpng16.la").
21 # 2. Disabled WARNING and WRITE options in pnglibconf.dfa.
22 # 3. Build zlib alongside libpng
23 ################################################################################
25 # Disable logging via library build configuration control.
26 cat scripts/pnglibconf.dfa | \
27 sed -e "s/option STDIO/option STDIO disabled/" \
28 -e "s/option WARNING /option WARNING disabled/" \
29 -e "s/option WRITE enables WRITE_INT_FUNCTIONS/option WRITE disabled/" \
30 > scripts/pnglibconf.dfa.temp
31 mv scripts/pnglibconf.dfa.temp scripts/pnglibconf.dfa
33 # build the libpng library.
35 ./configure --with-libpng-prefix=OSS_FUZZ_
37 make -j$(nproc) libpng16.la
39 # build libpng_read_fuzzer.
40 $CXX $CXXFLAGS -std=c++11 -I. \
41 $SRC/libpng/contrib/oss-fuzz/libpng_read_fuzzer.cc \
42 -o $OUT/libpng_read_fuzzer \
43 -lFuzzingEngine .libs/libpng16.a -lz
46 find $SRC/libpng -name "*.png" | grep -v crashers | \
47 xargs zip $OUT/libpng_read_fuzzer_seed_corpus.zip
49 cp $SRC/libpng/contrib/oss-fuzz/*.dict \
50 $SRC/libpng/contrib/oss-fuzz/*.options $OUT/