Generate module.modulemap file when building Mac Framework

Without this file, the Framework can't be used by Swift projects.

Bug: webrtc:9142
Change-Id: I8803ec8b194dc116e133257e205f4620bb34a692
Reviewed-on: https://webrtc-review.googlesource.com/c/103340
Commit-Queue: Patrik Höglund <phoglund@webrtc.org>
Reviewed-by: Patrik Höglund <phoglund@webrtc.org>
Reviewed-by: Anders Carlsson <andersc@webrtc.org>
Cr-Commit-Position: refs/heads/master@{#25047}

tools_webrtc/ios/generate_modulemap.py

@@ -0,0 +1,32 @@
+# Copyright (c) 2018 The WebRTC project authors. All Rights Reserved.
+#
+# Use of this source code is governed by a BSD-style license
+# that can be found in the LICENSE file in the root of the source
+# tree. An additional intellectual property rights grant can be found
+# in the file PATENTS.  All contributing project authors may
+# be found in the AUTHORS file in the root of the source tree.
+
+import argparse
+import sys
+
+def GenerateModulemap():
+  parser = argparse.ArgumentParser(description='Generate modulemap')
+  parser.add_argument("-o", "--out", type=str, help="Output file.")
+  parser.add_argument("-n", "--name", type=str, help="Name of binary.")
+
+  args = parser.parse_args()
+
+  with open(args.out, "w") as outfile:
+    module_template = 'framework module %s {\n' \
+                      '  umbrella header "%s.h"\n' \
+                      '\n' \
+                      '  export *\n' \
+                      '  module * { export * }\n' \
+                      '}\n' % (args.name, args.name)
+    outfile.write(module_template)
+  return 0
+
+
+if __name__ == '__main__':
+  sys.exit(GenerateModulemap())
+