mirror of https://github.com/google/oss-fuzz.git
70 lines
2.5 KiB
Bash
70 lines
2.5 KiB
Bash
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#!/bin/bash -eu
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# Copyright 2022 Google LLC
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#
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# Licensed under the Apache License, Version 2.0 (the "License");
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# you may not use this file except in compliance with the License.
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# You may obtain a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS,
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# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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# See the License for the specific language governing permissions and
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# limitations under the License.
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#
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################################################################################
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export ASAN_OPTIONS="detect_leaks=0:use_sigaltstack=0:detect_stack_use_after_return=0"
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export UBSAN_OPTIONS="silence_unsigned_overflow=1"
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./autogen.sh
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./configure --enable-shared --disable-install-doc
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make -j $(nproc)
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# The `ln` command below is a workaround for an issue with ruby's
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# build system, which seems to be a known problem. See this commit:
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#
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# https://github.com/ruby/ruby/commit/9ee48c0a7ce6e7c497bba87c5702ac88d1373bfb
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#
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# Our problem is that `make install` runs some ruby code, using the
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# newly built ruby interpreter, but with the `LD_PRELOAD` environment
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# variable set so that it can find `libruby.so`. Some of the those
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# ruby scripts exec other binaries, such as `make`. Those binaries
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# then crash because they can't find the ASAN lib, which is
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# recursively pulled in by `libruby.so`.
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#
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# Apparently the same problem happened before on multiarch platforms,
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# so a workaround was added in commit 9ee48c0 (link above): if the
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# file `exe/ruby` exists then the `LD_PRELOAD` environment variable is
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# not set. We trigger the workaround here by creating a symlink to the
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# ruby binary.
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mkdir -p exe
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ln -s ../ruby exe/ruby
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make install -j $(nproc)
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ruby_version=$(basename `find . -name 'ruby-*.pc'` .pc)
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export RUBY_LIB_DIR=$(pkg-config --variable=libdir $ruby_version)
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export RUBY_LIBRARIES=$(pkg-config --variable=LIBRUBYARG_SHARED $ruby_version)
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export RUBY_INCLUDES=$(pkg-config --cflags $ruby_version)
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export RUBY_RUBYLIBDIR=$(pkg-config --variable=rubylibdir $ruby_version)
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cd $SRC/fuzz
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ruby gen_init_ruby_load_paths.rb > init_ruby_load_paths.h
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# The -rpath flag helps the dynamic linker to find .so files in /out/lib
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${CC} ${CFLAGS} fuzz_ruby_gems.c -o $OUT/fuzz_ruby_gems \
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-Wall \
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-Wl,-rpath,./lib \
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-L${RUBY_LIB_DIR} \
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${RUBY_INCLUDES} \
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${RUBY_LIBRARIES} \
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${LIB_FUZZING_ENGINE}
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# Copy options to out
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cp $SRC/fuzz/*.options $OUT/
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rm -fr $OUT/lib
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cp -r $RUBY_LIB_DIR $OUT/lib
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