webrtc-jingle-client could not build and run on iOS

[tinytian]

Hi,everyone

     I follow the https://github.com/lukeweber/webrtc-jingle-client instruction to build the webrtc-jingle-client on ios but I'm not lucky.

On $ gclient sync process,I counter the following errors:

Warning: Ignoring not yet implemented key "ARCHS".

Traceback (most recent call last):

  File "trunk/build/gyp_chromium", line 146, in <module>

    sys.exit(gyp.main(args))

  File "/Users/tianliwei/webrtc_trunk_5562_ubuntu_mac/trunk/webrtcjingleproject/trunk/tools/gyp/pylib/gyp/__init__.py", line 523, in main

    return gyp_main(args)

  File "/Users/tianliwei/webrtc_trunk_5562_ubuntu_mac/trunk/webrtcjingleproject/trunk/tools/gyp/pylib/gyp/__init__.py", line 508, in gyp_main

    generator.GenerateOutput(flat_list, targets, data, params)

  File "/Users/tianliwei/webrtc_trunk_5562_ubuntu_mac/trunk/webrtcjingleproject/trunk/tools/gyp/pylib/gyp/generator/ninja.py", line 1799, in GenerateOutput

    config_name)

  File "/Users/tianliwei/webrtc_trunk_5562_ubuntu_mac/trunk/webrtcjingleproject/trunk/tools/gyp/pylib/gyp/generator/ninja.py", line 1736, in GenerateOutputForConfig

    spec, config_name, generator_flags, case_sensitive_filesystem)

  File "/Users/tianliwei/webrtc_trunk_5562_ubuntu_mac/trunk/webrtcjingleproject/trunk/tools/gyp/pylib/gyp/generator/ninja.py", line 438, in WriteSpec

    case_sensitive_filesystem, spec)

  File "/Users/tianliwei/webrtc_trunk_5562_ubuntu_mac/trunk/webrtcjingleproject/trunk/tools/gyp/pylib/gyp/generator/ninja.py", line 767, in WriteSources

    for i in include_dirs])

  File "/Users/tianliwei/webrtc_trunk_5562_ubuntu_mac/trunk/webrtcjingleproject/trunk/tools/gyp/pylib/gyp/generator/ninja.py", line 307, in GypPathToNinja

    assert '$' not in path, path

AssertionError: $(SDKROOT)/usr/include/libxml2

Error: Command /usr/bin/python trunk/build/gyp_chromium --depth=trunk trunk/webrtcjingle.gyp returned non-zero exit status 1 in /Users/tianliwei/webrtc_trunk_5562_ubuntu_mac/trunk/webrtcjingleproject

i didn't understand what's "assert '$' not in path" meaning, who can help me,thank you!