crashpad/build/BUILDCONFIG.gn
Scott Graham 9a97daff39 Add libfuzzer support
Adds the build support for using libfuzzer controlled by setting
`crashpad_use_libfuzzer=true`.

Also adds a first fuzzer (for ElfImageReader). Currently only runs on
Linux, but should work on Fuchsia too with some minor fixes (not sure
yet whether the fixes required are toolchain or in our build setup).

Run as:
  out/lin/elf_image_reader_fuzzer snapshot/elf/elf_image_reader_fuzzer_corpus/
hits an OOM pretty quickly in trying to allocate a giant buffer.

Bug: crashpad:30, crashpad:196, crashpad:233
Change-Id: Idd3ca11fe00319b8b29e029d5e13b17bfd518ea0
Reviewed-on: https://chromium-review.googlesource.com/1083451
Reviewed-by: Robert Sesek <rsesek@chromium.org>
Reviewed-by: Joshua Peraza <jperaza@chromium.org>
Commit-Queue: Scott Graham <scottmg@chromium.org>
2018-06-07 21:09:53 +00:00

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# Copyright 2017 The Crashpad Authors. All rights reserved.
#
# 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.
# Intentionally very minimal, so that Crashpad can build in-tree in a variety of
# other projects, unrelated to the variables that are set in those projects'
# BUILDCONFIG.gn. Do not add more variables here. Instead, make them available
# in build/crashpad_buildconfig.gni if they must be globally available.
if (target_os == "") {
target_os = host_os
}
if (current_os == "") {
current_os = target_os
}
if (target_cpu == "") {
target_cpu = host_cpu
}
if (current_cpu == "") {
current_cpu = target_cpu
}
if (current_os == "win") {
set_default_toolchain(
"//third_party/mini_chromium/mini_chromium/build:msvc_toolchain_$current_cpu")
} else {
set_default_toolchain(
"//third_party/mini_chromium/mini_chromium/build:gcc_like_toolchain")
}
declare_args() {
# When true, enables the debug configuration, with additional run-time checks
# and logging. When false, enables the release configuration, with additional
# optimizations.
is_debug = false
# When true, build all code with -fsanitize=fuzzer, and enable various
# *_fuzzer targets.
crashpad_use_libfuzzer = false
}
_default_configs = [
"//third_party/mini_chromium/mini_chromium/build:default",
"//third_party/mini_chromium/mini_chromium/build:Wexit_time_destructors",
]
if (crashpad_use_libfuzzer) {
_default_configs += [ "//build:crashpad_fuzzer_flags" ]
}
_default_executable_configs =
_default_configs + [
"//third_party/mini_chromium/mini_chromium/build:executable",
"//third_party/mini_chromium/mini_chromium/build:win_console",
]
set_defaults("source_set") {
configs = _default_configs
}
set_defaults("static_library") {
configs = _default_configs
}
set_defaults("executable") {
configs = _default_executable_configs
}
set_defaults("loadable_module") {
configs = _default_configs
}
set_defaults("shared_library") {
configs = _default_configs
}
set_defaults("test") {
configs = _default_executable_configs
}