# Copyright 2015 The Chromium Authors. All rights reserved.
# Use of this source code is governed by a BSD-style license that can be
# found in the LICENSE file.

# LibFuzzer is a LLVM tool for coverage-guided fuzz testing.
# See http://www.chromium.org/developers/testing/libfuzzer
#
# To enable libfuzzer, 'use_libfuzzer' GN option should be set to true.

import("//build/config/features.gni")
import("//build/config/sanitizers/sanitizers.gni")

static_library("libfuzzer_main") {
  # libfuzzer should be compiled without coverage (infinite loop in trace_cmp).
  configs -= [ "//build/config/sanitizers:default_sanitizer_coverage_flags" ]

  sources = []
  if (use_libfuzzer) {
    sources += [
      "../../third_party/llvm/lib/Fuzzer/FuzzerCrossOver.cpp",
      "../../third_party/llvm/lib/Fuzzer/FuzzerDriver.cpp",
      "../../third_party/llvm/lib/Fuzzer/FuzzerFlags.def",
      "../../third_party/llvm/lib/Fuzzer/FuzzerIO.cpp",
      "../../third_party/llvm/lib/Fuzzer/FuzzerInterface.cpp",
      "../../third_party/llvm/lib/Fuzzer/FuzzerLoop.cpp",
      "../../third_party/llvm/lib/Fuzzer/FuzzerMain.cpp",
      "../../third_party/llvm/lib/Fuzzer/FuzzerMutate.cpp",
      "../../third_party/llvm/lib/Fuzzer/FuzzerSHA1.cpp",
      "../../third_party/llvm/lib/Fuzzer/FuzzerTracePC.cpp",
      "../../third_party/llvm/lib/Fuzzer/FuzzerTraceState.cpp",
      "../../third_party/llvm/lib/Fuzzer/FuzzerUtil.cpp",
    ]
  } else if (use_drfuzz) {
    sources += [ "drfuzz_main.cc" ]
  } else {
    sources += [ "unittest_main.cc" ]
  }
}

# A config used by all fuzzer_tests.
config("fuzzer_test_config") {
  if (use_libfuzzer && is_mac) {
    ldflags = [
      "-Wl,-U,_LLVMFuzzerCustomMutator",
      "-Wl,-U,_LLVMFuzzerInitialize",
    ]
  }
}

# Noop config used to tag fuzzer tests excluded from clusterfuzz.
# Libfuzzer build bot uses this to filter out targets while
# building an archive for clusterfuzz.
config("no_clusterfuzz") {
}

# noop to tag seed corpus rules.
source_set("seed_corpus") {
}