1 files changed, 34 insertions, 0 deletions
diff --git a/third_party/libwebrtc/build/config/coverage/BUILD.gn b/third_party/libwebrtc/build/config/coverage/BUILD.gn
new file mode 100644
index 0000000000..09c227dce8
--- /dev/null
+++ b/third_party/libwebrtc/build/config/coverage/BUILD.gn
@@ -0,0 +1,34 @@
+# Copyright 2017 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/coverage/coverage.gni")
+
+config("default_coverage") {
+  if (use_clang_coverage) {
+    ldflags = []
+    if (!is_win) {
+      # Windows directly calls link.exe instead of the compiler driver when
+      # linking, and embeds the path to the profile runtime library as
+      # dependent library into each object file.
+      ldflags += [ "-fprofile-instr-generate" ]
+    }
+
+    cflags = [
+      "-fprofile-instr-generate",
+      "-fcoverage-mapping",
+
+      # Following experimental flags removes unused header functions from the
+      # coverage mapping data embedded in the test binaries, and the reduction
+      # of binary size enables building Chrome's large unit test targets on
+      # MacOS. Please refer to crbug.com/796290 for more details.
+      "-mllvm",
+      "-limited-coverage-experimental=true",
+    ]
+
+    if (is_linux || is_chromeos) {
+      # TODO(crbug.com/1194301): Remove this flag.
+      cflags += [ "-fno-use-cxa-atexit" ]
+    }
+  }
+}