3 files changed, 59 insertions, 0 deletions
diff --git a/third_party/libwebrtc/build/android/native_flags/BUILD.gn b/third_party/libwebrtc/build/android/native_flags/BUILD.gn
new file mode 100644
index 0000000000..9c5be70ffd
--- /dev/null
+++ b/third_party/libwebrtc/build/android/native_flags/BUILD.gn
@@ -0,0 +1,37 @@
+# Copyright 2021 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.
+
+if (current_toolchain == default_toolchain) {
+  import("//build/toolchain/toolchain.gni")
+
+  # A toolchain that will capture compiler and linker arguments to a file.
+  toolchain("flagcapture") {
+    tool("cxx") {
+      cxx = rebase_path("argcapture.py", root_build_dir)
+      command = "$cxx {{output}} {{defines}} {{include_dirs}} {{cflags}} {{cflags_cc}}"
+      outputs = [ "{{root_out_dir}}/{{label_name}}.txt" ]
+    }
+    tool("solink") {
+      solink = rebase_path("argcapture.py", root_build_dir)
+      command = "$solink {{output}} {{ldflags}}"
+      outputs = [ "{{root_out_dir}}/{{label_name}}.txt" ]
+    }
+    tool("alink") {
+      command = "this-should-never-run"
+      outputs = [ "this-will-never-exist" ]
+    }
+    tool("stamp") {
+      command = stamp_command
+      description = stamp_description
+    }
+  }
+} else if (current_toolchain == "//build/android/native_flags:flagcapture") {
+  # This will record flags from all default configs of the default toolchain.
+  source_set("default_ccflags") {
+    sources = [ "empty.cc" ]
+  }
+  shared_library("default_ldflags") {
+    no_default_deps = true
+  }
+}
diff --git a/third_party/libwebrtc/build/android/native_flags/argcapture.py b/third_party/libwebrtc/build/android/native_flags/argcapture.py
new file mode 100755
index 0000000000..b0e2acd92a
--- /dev/null
+++ b/third_party/libwebrtc/build/android/native_flags/argcapture.py
@@ -0,0 +1,17 @@
+#!/usr/bin/env python3
+# Copyright 2021 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.
+"""Writes arguments to a file."""
+
+import sys
+
+
+def main():
+  with open(sys.argv[1], 'w') as f:
+    f.write('\n'.join(sys.argv[2:]))
+    f.write('\n')
+
+
+if __name__ == '__main__':
+  main()
diff --git a/third_party/libwebrtc/build/android/native_flags/empty.cc b/third_party/libwebrtc/build/android/native_flags/empty.cc
new file mode 100644
index 0000000000..94aac140fb
--- /dev/null
+++ b/third_party/libwebrtc/build/android/native_flags/empty.cc
@@ -0,0 +1,5 @@
+// Copyright 2021 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.
+
+// This file just needs to exist to appease GN.