Add a GN override to make building fuzzer targets optional.

BUILD.gn

 # Copyright 2014 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.
 
 import("//build/config/android/config.gni")
 import("//build/config/arm.gni")
 import("//build/config/dcheck_always_on.gni")
 import("//build/config/mips.gni")
 import("//build/config/sanitizers/sanitizers.gni")
 
@@ skipping 2368 matching lines @@
 
   configs = [ ":internal_config_base" ]
 
   public_configs = [ ":libsampler_config" ]
 
   deps = [
     ":v8_libbase",
   ]
 }
 
-v8_source_set("fuzzer_support") {
-  visibility = [ ":*" ]  # Only targets in this file can depend on this.
+if (v8_enable_fuzzers) {
+  v8_source_set("fuzzer_support") {
+    visibility = [ ":*" ]  # Only targets in this file can depend on this.
 
-  sources = [
-    "test/fuzzer/fuzzer-support.cc",
-    "test/fuzzer/fuzzer-support.h",
-  ]
+    sources = [
+      "test/fuzzer/fuzzer-support.cc",
+      "test/fuzzer/fuzzer-support.h",
+    ]
 
-  configs = [ ":internal_config_base" ]
+    configs = [ ":internal_config_base" ]
 
-  deps = [
-    ":v8",
-  ]
+    deps = [
+      ":v8",
+    ]
 
-  public_deps = [
-    ":v8_libbase",
-    ":v8_libplatform",
-  ]
+    public_deps = [
+      ":v8_libbase",
+      ":v8_libplatform",
+    ]
 
-  if (v8_enable_i18n_support) {
-    deps += [ "//third_party/icu" ]
+    if (v8_enable_i18n_support) {
+      deps += [ "//third_party/icu" ]
+    }
+  }
+
+  v8_source_set("simple_fuzzer") {
+    sources = [
+      "test/fuzzer/fuzzer.cc",
+    ]
+
+    configs = [ ":internal_config_base" ]
   }
 }
 
-v8_source_set("simple_fuzzer") {
-  sources = [
-    "test/fuzzer/fuzzer.cc",
-  ]
-
-  configs = [ ":internal_config_base" ]
-}
-
 ###############################################################################
 # Executables
 #
 
 if (current_toolchain == v8_snapshot_toolchain) {
   v8_executable("mksnapshot") {
     visibility = [ ":*" ]  # Only targets in this file can depend on this.
 
     sources = [
       "src/snapshot/mksnapshot.cc",
@@ skipping 51 matching lines @@
     (current_toolchain != host_toolchain && v8_toolset_for_shell == "target")
 
 group("gn_all") {
   testonly = true
 
   deps = [
     ":d8",
     ":v8_hello_world",
     ":v8_parser_shell",
     ":v8_sample_process",
-    ":v8_simple_json_fuzzer",
-    ":v8_simple_parser_fuzzer",
-    ":v8_simple_regexp_fuzzer",
-    ":v8_simple_wasm_asmjs_fuzzer",
-    ":v8_simple_wasm_fuzzer",
     "test:gn_all",
     "tools:gn_all",
   ]
 
+  if (v8_enable_fuzzers) {
+    deps += [
+      ":v8_simple_json_fuzzer",
+      ":v8_simple_parser_fuzzer",
+      ":v8_simple_regexp_fuzzer",
+      ":v8_simple_wasm_asmjs_fuzzer",
+      ":v8_simple_wasm_fuzzer",
+    ]
+  }
+
   if (want_v8_shell) {
     deps += [ ":v8_shell" ]
   }
 
   if (v8_test_isolation_mode != "noop") {
     deps += [ ":d8_run" ]
   }
 }
 
 if (is_component_build) {
@@ skipping 172 matching lines @@
       "//build/config/sanitizers:deps",
       "//build/win:default_exe_manifest",
     ]
 
     if (v8_enable_i18n_support) {
       deps += [ "//third_party/icu" ]
     }
   }
 }
 
-template("v8_fuzzer") {
-  name = target_name
-  forward_variables_from(invoker, "*")
-  v8_executable("v8_simple_" + name) {
-    deps = [
-      ":" + name,
-      ":simple_fuzzer",
-      "//build/win:default_exe_manifest",
-    ]
-
-    configs = [ ":external_config" ]
-  }
-}
-
-v8_source_set("json_fuzzer") {
+v8_source_set("wasm_module_runner") {
   sources = [
-    "test/fuzzer/json.cc",
-  ]
-
-  deps = [
-    ":fuzzer_support",
+    "test/common/wasm/wasm-module-runner.cc",
+    "test/common/wasm/wasm-module-runner.h",
   ]
 
   configs = [
     ":external_config",
     ":internal_config_base",
   ]
 }
 
-v8_fuzzer("json_fuzzer") {
-}
-
-v8_source_set("parser_fuzzer") {
+v8_source_set("wasm_test_signatures") {
   sources = [
-    "test/fuzzer/parser.cc",
-  ]
-
-  deps = [
-    ":fuzzer_support",
+    "test/common/wasm/test-signatures.h",
   ]
 
   configs = [
     ":external_config",
     ":internal_config_base",
   ]
 }
 
-v8_fuzzer("parser_fuzzer") {
+if (v8_enable_fuzzers) {
+  template("v8_fuzzer") {
+    name = target_name
+    forward_variables_from(invoker, "*")
+    v8_executable("v8_simple_" + name) {
+      deps = [
+        ":" + name,
+        ":simple_fuzzer",
+        "//build/win:default_exe_manifest",
+      ]
+
+      configs = [ ":external_config" ]
+    }
+  }
+
+  v8_source_set("json_fuzzer") {
+    sources = [
+      "test/fuzzer/json.cc",
+    ]
+
+    deps = [
+      ":fuzzer_support",
+    ]
+
+    configs = [
+      ":external_config",
+      ":internal_config_base",
+    ]
+  }
+
+  v8_fuzzer("json_fuzzer") {
+  }
+
+  v8_source_set("parser_fuzzer") {
+    sources = [
+      "test/fuzzer/parser.cc",
+    ]
+
+    deps = [
+      ":fuzzer_support",
+    ]
+
+    configs = [
+      ":external_config",
+      ":internal_config_base",
+    ]
+  }
+
+  v8_fuzzer("parser_fuzzer") {
+  }
+
+  v8_source_set("regexp_fuzzer") {
+    sources = [
+      "test/fuzzer/regexp.cc",
+    ]
+
+    deps = [
+      ":fuzzer_support",
+    ]
+
+    configs = [
+      ":external_config",
+      ":internal_config_base",
+    ]
+  }
+
+  v8_fuzzer("regexp_fuzzer") {
+  }
+
+  v8_source_set("wasm_fuzzer") {
+    sources = [
+      "test/fuzzer/wasm.cc",
+    ]
+
+    deps = [
+      ":fuzzer_support",
+      ":wasm_module_runner",
+    ]
+
+    configs = [
+      ":external_config",
+      ":internal_config_base",
+    ]
+  }
+
+  v8_fuzzer("wasm_fuzzer") {
+  }
+
+  v8_source_set("wasm_asmjs_fuzzer") {
+    sources = [
+      "test/fuzzer/wasm-asmjs.cc",
+    ]
+
+    deps = [
+      ":fuzzer_support",
+      ":wasm_module_runner",
+    ]
+
+    configs = [
+      ":external_config",
+      ":internal_config_base",
+    ]
+  }
+
+  v8_fuzzer("wasm_asmjs_fuzzer") {
+  }
+
+  v8_source_set("wasm_code_fuzzer") {
+    sources = [
+      "test/fuzzer/wasm-code.cc",
+    ]
+
+    deps = [
+      ":fuzzer_support",
+      ":wasm_module_runner",
+      ":wasm_test_signatures",
+    ]
+
+    configs = [
+      ":external_config",
+      ":internal_config_base",
+    ]
+  }
+
+  v8_fuzzer("wasm_code_fuzzer") {
+  }
+
+  v8_source_set("wasm_call_fuzzer") {
+    sources = [
+      "test/fuzzer/wasm-call.cc",
+    ]
+
+    deps = [
+      ":fuzzer_support",
+      ":wasm_module_runner",
+      ":wasm_test_signatures",
+    ]
+
+    configs = [
+      ":external_config",
+      ":internal_config_base",
+    ]
+  }
+
+  v8_fuzzer("wasm_call_fuzzer") {
+  }
+
+  v8_source_set("lib_wasm_section_fuzzer") {
+    sources = [
+      "test/fuzzer/wasm-section-fuzzers.cc",
+      "test/fuzzer/wasm-section-fuzzers.h",
+    ]
+
+    configs = [
+      ":external_config",
+      ":internal_config_base",
+    ]
+  }
+
+  v8_source_set("wasm_types_section_fuzzer") {
+    sources = [
+      "test/fuzzer/wasm-types-section.cc",
+    ]
+
+    deps = [
+      ":fuzzer_support",
+      ":lib_wasm_section_fuzzer",
+      ":wasm_module_runner",
+    ]
+
+    configs = [
+      ":external_config",
+      ":internal_config_base",
+    ]
+  }
+
+  v8_fuzzer("wasm_types_section_fuzzer") {
+  }
+
+  v8_source_set("wasm_names_section_fuzzer") {
+    sources = [
+      "test/fuzzer/wasm-names-section.cc",
+    ]
+
+    deps = [
+      ":fuzzer_support",
+      ":lib_wasm_section_fuzzer",
+      ":wasm_module_runner",
+    ]
+
+    configs = [
+      ":external_config",
+      ":internal_config_base",
+    ]
+  }
+
+  v8_fuzzer("wasm_names_section_fuzzer") {
+  }
+
+  v8_source_set("wasm_globals_section_fuzzer") {
+    sources = [
+      "test/fuzzer/wasm-globals-section.cc",
+    ]
+
+    deps = [
+      ":fuzzer_support",
+      ":lib_wasm_section_fuzzer",
+      ":wasm_module_runner",
+    ]
+
+    configs = [
+      ":external_config",
+      ":internal_config_base",
+    ]
+  }
+
+  v8_fuzzer("wasm_globals_section_fuzzer") {
+  }
+
+  v8_source_set("wasm_imports_section_fuzzer") {
+    sources = [
+      "test/fuzzer/wasm-imports-section.cc",
+    ]
+
+    deps = [
+      ":fuzzer_support",
+      ":lib_wasm_section_fuzzer",
+      ":wasm_module_runner",
+    ]
+
+    configs = [
+      ":external_config",
+      ":internal_config_base",
+    ]
+  }
+
+  v8_fuzzer("wasm_imports_section_fuzzer") {
+  }
+
+  v8_source_set("wasm_function_sigs_section_fuzzer") {
+    sources = [
+      "test/fuzzer/wasm-function-sigs-section.cc",
+    ]
+
+    deps = [
+      ":fuzzer_support",
+      ":lib_wasm_section_fuzzer",
+      ":wasm_module_runner",
+    ]
+
+    configs = [
+      ":external_config",
+      ":internal_config_base",
+    ]
+  }
+
+  v8_fuzzer("wasm_function_sigs_section_fuzzer") {
+  }
+
+  v8_source_set("wasm_memory_section_fuzzer") {
+    sources = [
+      "test/fuzzer/wasm-memory-section.cc",
+    ]
+
+    deps = [
+      ":fuzzer_support",
+      ":lib_wasm_section_fuzzer",
+      ":wasm_module_runner",
+    ]
+
+    configs = [
+      ":external_config",
+      ":internal_config_base",
+    ]
+  }
+
+  v8_fuzzer("wasm_memory_section_fuzzer") {
+  }
+
+  v8_source_set("wasm_data_section_fuzzer") {
+    sources = [
+      "test/fuzzer/wasm-data-section.cc",
+    ]
+
+    deps = [
+      ":fuzzer_support",
+      ":lib_wasm_section_fuzzer",
+      ":wasm_module_runner",
+    ]
+
+    configs = [
+      ":external_config",
+      ":internal_config_base",
+    ]
+  }
+
+  v8_fuzzer("wasm_data_section_fuzzer") {
+  }
 }
-
-v8_source_set("regexp_fuzzer") {
-  sources = [
-    "test/fuzzer/regexp.cc",
-  ]
-
-  deps = [
-    ":fuzzer_support",
-  ]
-
-  configs = [
-    ":external_config",
-    ":internal_config_base",
-  ]
-}
-
-v8_fuzzer("regexp_fuzzer") {
-}
-
-v8_source_set("wasm_module_runner") {
-  sources = [
-    "test/common/wasm/wasm-module-runner.cc",
-    "test/common/wasm/wasm-module-runner.h",
-  ]
-
-  configs = [
-    ":external_config",
-    ":internal_config_base",
-  ]
-}
-
-v8_source_set("wasm_test_signatures") {
-  sources = [
-    "test/common/wasm/test-signatures.h",
-  ]
-
-  configs = [
-    ":external_config",
-    ":internal_config_base",
-  ]
-}
-
-v8_source_set("wasm_fuzzer") {
-  sources = [
-    "test/fuzzer/wasm.cc",
-  ]
-
-  deps = [
-    ":fuzzer_support",
-    ":wasm_module_runner",
-  ]
-
-  configs = [
-    ":external_config",
-    ":internal_config_base",
-  ]
-}
-
-v8_fuzzer("wasm_fuzzer") {
-}
-
-v8_source_set("wasm_asmjs_fuzzer") {
-  sources = [
-    "test/fuzzer/wasm-asmjs.cc",
-  ]
-
-  deps = [
-    ":fuzzer_support",
-    ":wasm_module_runner",
-  ]
-
-  configs = [
-    ":external_config",
-    ":internal_config_base",
-  ]
-}
-
-v8_fuzzer("wasm_asmjs_fuzzer") {
-}
-
-v8_source_set("wasm_code_fuzzer") {
-  sources = [
-    "test/fuzzer/wasm-code.cc",
-  ]
-
-  deps = [
-    ":fuzzer_support",
-    ":wasm_module_runner",
-    ":wasm_test_signatures",
-  ]
-
-  configs = [
-    ":external_config",
-    ":internal_config_base",
-  ]
-}
-
-v8_fuzzer("wasm_code_fuzzer") {
-}
-
-v8_source_set("wasm_call_fuzzer") {
-  sources = [
-    "test/fuzzer/wasm-call.cc",
-  ]
-
-  deps = [
-    ":fuzzer_support",
-    ":wasm_module_runner",
-    ":wasm_test_signatures",
-  ]
-
-  configs = [
-    ":external_config",
-    ":internal_config_base",
-  ]
-}
-
-v8_fuzzer("wasm_call_fuzzer") {
-}
-
-v8_source_set("lib_wasm_section_fuzzer") {
-  sources = [
-    "test/fuzzer/wasm-section-fuzzers.cc",
-    "test/fuzzer/wasm-section-fuzzers.h",
-  ]
-
-  configs = [
-    ":external_config",
-    ":internal_config_base",
-  ]
-}
-
-v8_source_set("wasm_types_section_fuzzer") {
-  sources = [
-    "test/fuzzer/wasm-types-section.cc",
-  ]
-
-  deps = [
-    ":fuzzer_support",
-    ":lib_wasm_section_fuzzer",
-    ":wasm_module_runner",
-  ]
-
-  configs = [
-    ":external_config",
-    ":internal_config_base",
-  ]
-}
-
-v8_fuzzer("wasm_types_section_fuzzer") {
-}
-
-v8_source_set("wasm_names_section_fuzzer") {
-  sources = [
-    "test/fuzzer/wasm-names-section.cc",
-  ]
-
-  deps = [
-    ":fuzzer_support",
-    ":lib_wasm_section_fuzzer",
-    ":wasm_module_runner",
-  ]
-
-  configs = [
-    ":external_config",
-    ":internal_config_base",
-  ]
-}
-
-v8_fuzzer("wasm_names_section_fuzzer") {
-}
-
-v8_source_set("wasm_globals_section_fuzzer") {
-  sources = [
-    "test/fuzzer/wasm-globals-section.cc",
-  ]
-
-  deps = [
-    ":fuzzer_support",
-    ":lib_wasm_section_fuzzer",
-    ":wasm_module_runner",
-  ]
-
-  configs = [
-    ":external_config",
-    ":internal_config_base",
-  ]
-}
-
-v8_fuzzer("wasm_globals_section_fuzzer") {
-}
-
-v8_source_set("wasm_imports_section_fuzzer") {
-  sources = [
-    "test/fuzzer/wasm-imports-section.cc",
-  ]
-
-  deps = [
-    ":fuzzer_support",
-    ":lib_wasm_section_fuzzer",
-    ":wasm_module_runner",
-  ]
-
-  configs = [
-    ":external_config",
-    ":internal_config_base",
-  ]
-}
-
-v8_fuzzer("wasm_imports_section_fuzzer") {
-}
-
-v8_source_set("wasm_function_sigs_section_fuzzer") {
-  sources = [
-    "test/fuzzer/wasm-function-sigs-section.cc",
-  ]
-
-  deps = [
-    ":fuzzer_support",
-    ":lib_wasm_section_fuzzer",
-    ":wasm_module_runner",
-  ]
-
-  configs = [
-    ":external_config",
-    ":internal_config_base",
-  ]
-}
-
-v8_fuzzer("wasm_function_sigs_section_fuzzer") {
-}
-
-v8_source_set("wasm_memory_section_fuzzer") {
-  sources = [
-    "test/fuzzer/wasm-memory-section.cc",
-  ]
-
-  deps = [
-    ":fuzzer_support",
-    ":lib_wasm_section_fuzzer",
-    ":wasm_module_runner",
-  ]
-
-  configs = [
-    ":external_config",
-    ":internal_config_base",
-  ]
-}
-
-v8_fuzzer("wasm_memory_section_fuzzer") {
-}
-
-v8_source_set("wasm_data_section_fuzzer") {
-  sources = [
-    "test/fuzzer/wasm-data-section.cc",
-  ]
-
-  deps = [
-    ":fuzzer_support",
-    ":lib_wasm_section_fuzzer",
-    ":wasm_module_runner",
-  ]
-
-  configs = [
-    ":external_config",
-    ":internal_config_base",
-  ]
-}
-
-v8_fuzzer("wasm_data_section_fuzzer") {
-}