| # Copyright 2020 The Pigweed Authors |
| # |
| # 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 |
| # |
| # https://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. |
| |
| import("//build_overrides/pigweed.gni") |
| |
| import("$dir_pw_build/error.gni") |
| import("$dir_pw_third_party/abseil-cpp/abseil-cpp.gni") |
| import("$dir_pw_third_party/fuzztest/fuzztest.gni") |
| import("$dir_pw_third_party/re2/re2.gni") |
| import("$dir_pw_toolchain/host_clang/toolchains.gni") |
| import("$dir_pw_unit_test/test.gni") |
| |
| # Creates a libFuzzer-based fuzzer executable target and unit test |
| # |
| # This will link `sources` and `deps` with the libFuzzer compiler runtime. The |
| # `sources` and `deps` should include a definition of the standard LLVM fuzz |
| # target function, `LLVMFuzzerTestOneInput`. For more details, see: |
| # //pw_fuzzer/docs.rst |
| # https://llvm.org/docs/LibFuzzer.html |
| # |
| # Additionally, this creates a unit test that does not generate fuzzer inputs |
| # and simply executes the fuzz target function with fixed inputs. This is useful |
| # for verifying the fuzz target function compiles, links, and runs even when not |
| # using a fuzzing-capable host or toolchain. |
| # |
| # Args: |
| # - enable_test_if: (optional) Passed as `enable_if` to the unit test. |
| # Remaining arguments are the same as `pw_executable`. |
| # |
| template("pw_fuzzer") { |
| if (!pw_toolchain_FUZZING_ENABLED) { |
| pw_error(target_name) { |
| message_lines = [ "Toolchain does not enable fuzzing." ] |
| } |
| not_needed(invoker, "*") |
| } else if (pw_toolchain_SANITIZERS == []) { |
| pw_error(target_name) { |
| message_lines = [ "No sanitizer runtime set." ] |
| } |
| not_needed(invoker, "*") |
| } else { |
| pw_executable(target_name) { |
| configs = [] |
| deps = [] |
| forward_variables_from(invoker, |
| "*", |
| [ |
| "enable_test_if", |
| "visibility", |
| ]) |
| forward_variables_from(invoker, [ "visibility" ]) |
| configs += [ "$dir_pw_fuzzer:libfuzzer_config" ] |
| deps += [ "$dir_pw_fuzzer:libfuzzer" ] |
| } |
| } |
| |
| pw_test("${target_name}_test") { |
| deps = [] |
| forward_variables_from(invoker, "*", [ "visibility" ]) |
| forward_variables_from(invoker, [ "visibility" ]) |
| deps += [ "$dir_pw_fuzzer:libfuzzer_test" ] |
| enable_if = !defined(enable_test_if) || enable_test_if |
| } |
| } |