Separate out GN sanitizer flags.

build/config/compiler/BUILD.gn

 # Copyright (c) 2013 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/chrome_build.gni")
 import("//build/config/compiler/compiler.gni")
 import("//build/toolchain/ccache.gni")
 
 if (current_cpu == "arm") {
@@ skipping 126 matching lines @@
       } else {
         cflags += [ "-fstack-protector" ]
       }
     }
 
     # Linker warnings.
     if (!(is_chromeos && current_cpu == "arm") && !is_mac && !is_ios) {
       # TODO(jochen): Enable this on chromeos on arm. http://crbug.com/356580
       ldflags += [ "-Wl,--fatal-warnings" ]
     }
-
-    # Common options for AddressSanitizer, LeakSanitizer, ThreadSanitizer,
-    # MemorySanitizer and non-official CFI builds.
-    if (using_sanitizer || (is_cfi && !is_official_build)) {
-      cflags += [
-        "-fno-omit-frame-pointer",
-        "-gline-tables-only",
-      ]
-    }
-    if (is_asan) {
-      asan_blacklist_path =
-          rebase_path("//tools/memory/asan/blacklist.txt", root_build_dir)
-      cflags += [
-        "-fsanitize=address",
-        "-fsanitize-blacklist=$asan_blacklist_path",
-      ]
-      if (is_mac) {
-        cflags += [ "-mllvm -asan-globals=0" ]  # http://crbug.com/352073
-        # TODO(GYP): deal with mac_bundles.
-      }
-    }
-    if (is_lsan) {
-      cflags += [ "-fsanitize=leak" ]
-    }
-    if (is_tsan) {
-      tsan_blacklist_path =
-          rebase_path("//tools/memory/tsan_v2/ignores.txt", root_build_dir)
-      cflags += [
-        "-fsanitize=thread",
-        "-fsanitize-blacklist=$tsan_blacklist_path",
-      ]
-    }
-    if (is_msan) {
-      msan_blacklist_path =
-          rebase_path("//tools/msan/blacklist.txt", root_build_dir)
-      cflags += [
-        "-fsanitize=memory",
-        "-fsanitize-memory-track-origins=$msan_track_origins",
-        "-fsanitize-blacklist=$msan_blacklist_path",
-      ]
-    }
-    if (is_cfi && !is_nacl) {
-      cfi_blacklist_path =
-          rebase_path("//tools/cfi/blacklist.txt", root_build_dir)
-      cflags += [
-        "-flto",
-        "-fsanitize=cfi-vcall",
-        "-fsanitize=cfi-derived-cast",
-        "-fsanitize=cfi-unrelated-cast",
-        "-fsanitize-blacklist=$cfi_blacklist_path",
-      ]
-      ldflags += [
-        "-flto",
-        "-fsanitize=cfi-vcall",
-        "-fsanitize=cfi-derived-cast",
-        "-fsanitize=cfi-unrelated-cast",
-      ]
-
-      # Apply a lower LTO optimization level in non-official builds.
-      if (!is_official_build) {
-        if (is_linux) {
-          ldflags += [ "-Wl,-plugin-opt,O1" ]
-        } else if (is_mac) {
-          ldflags += [ "-Wl,-mllvm,-O1" ]
-        }
-      }
-
-      # Work-around for http://openradar.appspot.com/20356002
-      if (is_mac) {
-        ldflags += [ "-Wl,-all_load" ]
-      }
-
-      # Without this flag, LTO produces a .text section that is larger
-      # than the maximum call displacement, preventing the linker from
-      # relocating calls (http://llvm.org/PR22999).
-      if (current_cpu == "arm") {
-        ldflags += [ "-Wl,-plugin-opt,-function-sections" ]
-      }
-
-      if (use_cfi_diag) {
-        cflags += [
-          "-fno-sanitize-trap=cfi",
-          "-fsanitize-recover=cfi",
-        ]
-        ldflags += [
-          "-fno-sanitize-trap=cfi",
-          "-fsanitize-recover=cfi",
-        ]
-      } else {
-        defines += [ "CFI_ENFORCEMENT" ]
-      }
-    }
-
-    if (use_custom_libcxx) {
-      cflags_cc += [ "-nostdinc++" ]
-      include_dirs = [
-        "//buildtools/third_party/libc++/trunk/include",
-        "//buildtools/third_party/libc++abi/trunk/include",
-      ]
-    }
   }
 
   if (is_clang && is_debug) {
     # Allow comparing the address of references and 'this' against 0
     # in debug builds. Technically, these can never be null in
     # well-defined C/C++ and Clang can optimize such checks away in
     # release builds, but they may be used in asserts in debug builds.
     cflags_cc += [
       "-Wno-undefined-bool-conversion",
       "-Wno-tautological-undefined-compare",
@@ skipping 964 matching lines @@
   if (symbol_level == 0) {
     configs = [ ":no_symbols" ]
   } else if (symbol_level == 1) {
     configs = [ ":minimal_symbols" ]
   } else if (symbol_level == 2) {
     configs = [ ":symbols" ]
   } else {
     assert(false)
   }
 }