<html><head><meta http-equiv="Content-Type" content="text/html charset=windows-1252"></head><body style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space;">Thanks a lot for all your response, that really helps a lot.<div>My own responses bellow:<br><div>
<div style="color: rgb(0, 0, 0); font-family: Helvetica; font-size: 12px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: normal; orphans: auto; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; widows: auto; word-spacing: 0px; -webkit-text-stroke-width: 0px;"><span style="color: rgb(34, 34, 34); font-family: arial, sans-serif; font-size: 13px; background-color: rgb(255, 255, 255);"><br class="Apple-interchange-newline">--</span></div><div style="color: rgb(0, 0, 0); font-family: Helvetica; font-size: 12px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: normal; orphans: auto; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; widows: auto; word-spacing: 0px; -webkit-text-stroke-width: 0px;"><span style="color: rgb(34, 34, 34); font-family: arial, sans-serif; font-size: 13px; background-color: rgb(255, 255, 255);">Haché Jacques-Olivier</span><br style="color: rgb(34, 34, 34); font-family: arial, sans-serif; font-size: 13px;"><span style="color: rgb(34, 34, 34); font-family: arial, sans-serif; font-size: 13px;">R&amp;D Engineer at Temasys Communications Pte Ltd</span><br><div style="color: rgb(34, 34, 34); font-family: arial, sans-serif; font-size: 13px;">Fr : 06 45 85 48 80<br></div><div style="color: rgb(34, 34, 34); font-family: arial, sans-serif; font-size: 13px;">Sg : 9086 3673&nbsp;</div></div>
</div>
<br><div><div>On 31 Jul 2014, at 16:34, Benjamin Poulain &lt;<a href="mailto:benjamin@webkit.org">benjamin@webkit.org</a>&gt; wrote:</div><br class="Apple-interchange-newline"><blockquote type="cite">
  
    <meta content="text/html; charset=ISO-8859-1" http-equiv="Content-Type">
  
  <div bgcolor="#FFFFFF" text="#000000">
    On 7/30/14, 2:51 AM, Jacques-Olivier wrote:<br>
    <blockquote cite="mid:78B0ED4C-0324-4022-A73E-7069A898076E@temasys.com.sg" type="cite">
      <meta http-equiv="Content-Type" content="text/html;
        charset=ISO-8859-1">
      <div>I kept working on getting media_stream to work. I think my
        understanding of what is happening improved, but I’m still stuck
        at the same point:</div>
      <div><br>
      </div>
      <div>I read some more code and did some research about the
        Supplement and Supplementable classes.</div>
      <div>I mainly found&nbsp;<a moz-do-not-send="true" href="http://trac.webkit.org/wiki/Modules">this page</a>&nbsp;which
        explains that Supplements are used to extract code from
        “massive” classes and make then more manageable and
        maintainable.</div>
      <div>Please correct me if I am wrong.</div>
    </blockquote>
    That's right. Supplement are used to manage complexity by
    encapsulating self contained features behind a separate interfaces.<br></div></blockquote><div>Good</div><br><blockquote type="cite"><div bgcolor="#FFFFFF" text="#000000">
    <blockquote cite="mid:78B0ED4C-0324-4022-A73E-7069A898076E@temasys.com.sg" type="cite">
      <div>Anyway, it doesn’t change that my program has no Supplement
        for the key “UserMediaController”.</div>
      <div>It looks like most of the supplements are being provided in
        two places:</div>
      <div>
        <ul class="MailOutline">
          <li>WebKit::WebView::_commonInitializationWithFrameName</li>
          <li>WebKit2::WebPage ’s constructor</li>
        </ul>
        <div>is there any other place where it should be done?</div>
      </div>
    </blockquote>
    +probably another place in the WebKit layer for Windows, you can
    probably ignore that.<br></div></blockquote>I will</div><div><br><blockquote type="cite"><div bgcolor="#FFFFFF" text="#000000">
    <blockquote cite="mid:78B0ED4C-0324-4022-A73E-7069A898076E@temasys.com.sg" type="cite">
      <div>
        <div>WebView actually contains a call to
          WebCore::provideUserMediaTo which creates a supplement, but my
          debugging show that _commonInitializationWithFrameName is
          never called.</div>
        <div>WebPage’s constructor does not generate a
          UserMediaController supplement.</div>
        <div><br>
        </div>
        <div>
          <div>My understanding of the WebView is that it is the
            rectangle in which the webpages are rendered. Is this
            assumption correct?</div>
        </div>
        <div>I don’t understand why _commonInitializationWithFrameName
          is never called when browsing. From the name of the function,
          I would expect it to be called right after the memory
          allocation.</div>
      </div>
    </blockquote>
    WebKit1's WebView is not used by Safari.<br>
    <br>
    The WebKit project has two "application layers": an old one named
    WebKit1 that handle web pages in-process, and a new one named
    WebKit2 that use a multi-process model.<br></div></blockquote><div><br></div><div>Interesting. Do you know when the shift was done?</div><div>That means that Safari is not using it, but other port might.</div><br><blockquote type="cite"><div bgcolor="#FFFFFF" text="#000000">
    <blockquote cite="mid:78B0ED4C-0324-4022-A73E-7069A898076E@temasys.com.sg" type="cite">
      <div>
        <div>This leaves me with 2 options:</div>
        <div>1) Find a way to trigger
          _commonInitializationWithFrameName.</div>
        <div>I have no idea of how to do that at the moment</div>
      </div>
    </blockquote>
    If you want, you can still use WebKit1 by using the MiniBrowser:
    Tools/Scripts/run-minibrowser (IIRC it runs WebKit1 by default, but
    if not there is a way to get it to run WebKit1).<br></div></blockquote><div><br></div><div>Awesome!</div><div>I had to comment the permission checking as it seems like a function is missing, but I was able to turn on my camera.</div><div><br></div><div>More precisely, the UIDelegate does not respond to the selector&nbsp;webView:decidePolicyForUserMediaRequestFromOrigin:listener:</div><div>It doesn’t sound impossible to fix.</div><div><br></div><div>Once once the camera is turned on, the success callback is properly called.&nbsp;</div><div>I tried to render it in a video element by doing (JS)</div><div><span class="Apple-tab-span" style="white-space:pre">        </span>videoElement.src = stream;</div><div>but I guess it would have been a bit too easy :)</div><div><br></div><div>There is no error, but nothing happens.</div><div>It looks like the &lt;video&gt; element successfully registers the MediaStream, but is not capable of rendering it.</div><div><br></div><div>I will have to do some more digging in how the video element is handling a MediaStream.</div><br><blockquote type="cite"><div bgcolor="#FFFFFF" text="#000000">
    <blockquote cite="mid:78B0ED4C-0324-4022-A73E-7069A898076E@temasys.com.sg" type="cite">
      <div>
        <div>2) Duplicate the call to WebCore::provideUserMediaTo in
          WebKit2::WebPage.</div>
        <div>I understand this is what is being done for the geolocation
          supplement.</div>
        <div>I started to implement this solution, but it requires to
          translate Objective-C++ code into C++, and I am afraid that
          the file inclusion might never end.</div>
        <div><br>
        </div>
        <div>Does any one of these solutions sound more reliable than
          the other for you?</div>
      </div>
    </blockquote>
    Long term, if you want WebRTC to work in WebKit, it will have to
    work on WebKit2. If you just want to prototype something, it might
    be easier to use WebKit1 if its implementation is in a better shape.<br>
    <br></div></blockquote><div><br></div><div>I just arrived on Webkit, so I’m still in a discovery phase.&nbsp;</div><div>I think I will start by getting the MediaStream to work with WK1, and move to WK2 once I will be more familiar with the code.</div><br><blockquote type="cite"><div bgcolor="#FFFFFF" text="#000000">
    Can you clarify your goals? Do you intent to provide patches for
    WebRTC support in WebKit?<br>
    <br></div></blockquote><div><br></div><div>Yes, I’m here to complete the implementation of WebRTC in WebKit.</div><div>As I said, I’m still just entering the project, but in time, I will start providing patches.</div><div>I’ll probably get MS to fully work locally, and then move to the PeerConnection.</div><div><br></div><div>Regards,</div><div>J-O</div><br><blockquote type="cite"><div bgcolor="#FFFFFF" text="#000000">
    Benjamin<br>
    <br>
    <blockquote cite="mid:78B0ED4C-0324-4022-A73E-7069A898076E@temasys.com.sg" type="cite">
      <div>
        <div><br>
        </div>
        <div>Thanks in advance,</div>
        <div>J-O H</div>
        <div>
          <div style="font-family: Helvetica; font-size: 12px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: normal; orphans: auto; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; widows: auto; word-spacing: 0px; -webkit-text-stroke-width: 0px;"><span style="color: rgb(34, 34, 34); font-family: arial,
              sans-serif; font-size: 13px; background-color: rgb(255,
              255, 255);"><br class="Apple-interchange-newline">
              --</span></div>
          <div style="font-family: Helvetica; font-size: 12px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: normal; orphans: auto; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; widows: auto; word-spacing: 0px; -webkit-text-stroke-width: 0px;"><span style="color: rgb(34, 34, 34); font-family: arial,
              sans-serif; font-size: 13px; background-color: rgb(255,
              255, 255);">Haché Jacques-Olivier</span><br style="color:
              rgb(34, 34, 34); font-family: arial, sans-serif;
              font-size: 13px;">
            <span style="color: rgb(34, 34, 34); font-family: arial,
              sans-serif; font-size: 13px;">R&amp;D Engineer at Temasys
              Communications Pte Ltd</span><br>
            <div style="color: rgb(34, 34, 34); font-family: arial,
              sans-serif; font-size: 13px;">Fr : 06 45 85 48 80<br>
            </div>
            <div style="color: rgb(34, 34, 34); font-family: arial,
              sans-serif; font-size: 13px;">Sg : 9086 3673&nbsp;</div>
          </div>
        </div>
        <br>
        <div>
          <div>On 29 Jul 2014, at 17:45, Jacques-Olivier &lt;<a moz-do-not-send="true" href="mailto:jo.hache@temasys.com.sg">jo.hache@temasys.com.sg</a>&gt;
            wrote:</div>
          <br class="Apple-interchange-newline">
          <blockquote type="cite">
            <meta http-equiv="Content-Type" content="text/html;
              charset=ISO-8859-1">
            <div style="word-wrap: break-word; -webkit-nbsp-mode: space;
              -webkit-line-break: after-white-space;">Hi everyone,&nbsp;
              <div><br>
              </div>
              <div>I have some updates regarding my enabling of
                media_stream and some new question.</div>
              <div><br>
              </div>
              <div>I managed to build the project with the following
                options ON:</div>
              <div>
                <div>
                  <ul>
                    <li>ENABLE_MEDIA_CAPTURE</li>
                    <li>ENABLE_MEDIA_CONTROLS_SCRIPT</li>
                    <li>ENABLE_MEDIA_SOURCE</li>
                    <li>ENABLE_MEDIA_STATISTICS</li>
                    <li>ENABLE_MEDIA_STREAM</li>
                    <li>ENABLE_VIDEO</li>
                    <li>ENABLE_VIDEO_TRACK</li>
                  </ul>
                  <div>For this I had to:</div>
                </div>
                <div>
                  <div>1) copy the content of these folders</div>
                  <div>
                    <ul>
                      <li>WebKit/WebKitBuild/Debug/DerivedSources/WebCore</li>
                      <li>WebKit/WebKitBuild/Release/DerivedSources/WebCore</li>
                    </ul>
                  </div>
                  <div>into DerivedSources/WebCore</div>
                </div>
                <div><br>
                </div>
                <div>2) Add some header and source files to the Xcode
                  projects. The files were present in the repo, but not
                  added to the projects.</div>
                <div>3) Add some headers to be copied into
                  WebCore.framework</div>
                <div><br>
                </div>
                <div>Given those changes, I was able to build the
                  project with both Xcode and the build script;</div>
                <div><br>
                </div>
                <div>I tried running a very basic test that only calls
                  navigator.webkitGetUserMedia, but the call fails with
                  the folioing error:</div>
              </div>
              <blockquote style="margin: 0 0 0 40px; border: none;
                padding: 0px;">[Error] NotSupportedError: DOM Exception
                9: The implementation did not support the requested type
                of object or operation.</blockquote>
              <div>
                <div><br>
                </div>
                <div>I went into the code with Xcode’s debugger and
                  found that the error happens in
                  NavigatorUserMedia::webkitGetUserMedia (basically the
                  function’s entrance).</div>
                <div>My understanding is that the NavigatorUserMedia is
                  trying to get the content of a “supplement” for the
                  key “UserMediaController"</div>
                <div>The access to the supplement itself is fine, but
                  its map only contains one object with a key value set
                  to NULL.</div>
                <div>Therefore the supplement returns NULL, and the
                  NavigatorUserMedia triggers an error.</div>
                <div><br>
                </div>
                <div>There are some comments in the code about how
                  supplements work, but not what they are for. Can
                  anyone enlighten me about this?</div>
                <div>Did I miss an initialisation somewhere?</div>
                <div><br>
                </div>
                <div>This was what is blocking me now.</div>
                <div>I also have a couple of more generic questions
                  about the project:</div>
                <div><br>
                </div>
                <div>1) When I build with the script and then with
                  Xcode, Xcode starts from the beginning, generates new
                  binaries and links against them. Why are the script
                  and Xcode not using the same files? It feels like a
                  waste of time and space.</div>
                <div><br>
                </div>
                <div>2) I had to do a number of modifications to the
                  project to get here. At some point I will send pull
                  requests, but I understand most of the people do not
                  want to have media_stream enabled by default. Does
                  that mean that for each pull request, I will have to
                  remove my changes, send the pull request and do them
                  again?What is the right way of handling this
                  situation?</div>
                <div><br>
                </div>
                <div>Regards,</div>
                <div>J-O H</div>
                <div>
                  <div style="font-family: Helvetica; font-size: 12px;
                    font-style: normal; font-variant: normal;
                    font-weight: normal; letter-spacing: normal;
                    line-height: normal; orphans: auto; text-align:
                    start; text-indent: 0px; text-transform: none;
                    white-space: normal; widows: auto; word-spacing:
                    0px; -webkit-text-stroke-width: 0px;"><span style="color: rgb(34, 34, 34); font-family: arial,
                      sans-serif; font-size: 13px; background-color:
                      rgb(255, 255, 255);"><br class="Apple-interchange-newline">
                      --</span></div>
                  <div style="font-family: Helvetica; font-size: 12px;
                    font-style: normal; font-variant: normal;
                    font-weight: normal; letter-spacing: normal;
                    line-height: normal; orphans: auto; text-align:
                    start; text-indent: 0px; text-transform: none;
                    white-space: normal; widows: auto; word-spacing:
                    0px; -webkit-text-stroke-width: 0px;"><span style="color: rgb(34, 34, 34); font-family: arial,
                      sans-serif; font-size: 13px; background-color:
                      rgb(255, 255, 255);">Haché Jacques-Olivier</span><br style="color: rgb(34, 34, 34); font-family: arial,
                      sans-serif; font-size: 13px;">
                    <span style="color: rgb(34, 34, 34); font-family:
                      arial, sans-serif; font-size: 13px;">R&amp;D
                      Engineer at Temasys Communications Pte Ltd</span><br>
                    <div style="color: rgb(34, 34, 34); font-family:
                      arial, sans-serif; font-size: 13px;">Fr : 06 45 85
                      48 80<br>
                    </div>
                    <div style="color: rgb(34, 34, 34); font-family:
                      arial, sans-serif; font-size: 13px;">Sg : 9086
                      3673&nbsp;</div>
                  </div>
                </div>
                <br>
                <div>
                  <div>On 23 Jul 2014, at 16:49, Alexandre GOUAILLARD
                    &lt;<a moz-do-not-send="true" href="mailto:agouaillard@gmail.com">agouaillard@gmail.com</a>&gt;
                    wrote:</div>
                  <br class="Apple-interchange-newline">
                  <blockquote type="cite">
                    <div dir="ltr">Hi benjamain, thanks for the
                      answers,&nbsp;
                      <div><br>
                      </div>
                      <div>Cmake is not a build system in itself, it is
                        a cross platform build generator. i.e. you can
                        generate a make file, an VS solution file and a
                        Xcode file from CMakeLists.txt (cmake -G).</div>
                      <div><br>
                      </div>
                      <div>So you mean to say that the committed make
                        files and Xcode files are not generated from
                        CMake, is that correct? Also, do you have any
                        insight what the people using cmake end up using
                        for building (is it make/gcc/ld, make/clang/ld,
                        other flavors of build/compiler/linker) ?</div>
                      <div><br>
                      </div>
                      <div>regards,</div>
                      <div><br>
                      </div>
                      <div>Alex.<br>
                        <div><br>
                        </div>
                        <div>&nbsp;</div>
                      </div>
                    </div>
                    <div class="gmail_extra"><br>
                      <br>
                      <div class="gmail_quote">On Wed, Jul 23, 2014 at
                        4:24 PM, Benjamin Poulain <span dir="ltr">&lt;<a moz-do-not-send="true" href="mailto:benjamin@webkit.org" target="_blank">benjamin@webkit.org</a>&gt;</span>
                        wrote:<br>
                        <blockquote class="gmail_quote" style="margin:
                          0px 0px 0px 0.8ex; border-left-width: 1px;
                          border-left-color: rgb(204, 204, 204);
                          border-left-style: solid; padding-left: 1ex;
                          position: static; z-index: auto;">
                          <div bgcolor="#FFFFFF" text="#000000">
                            <div class=""> <br>
                              <div>On 7/22/14, 12:48 AM, Jacques-Olivier
                                wrote:<br>
                              </div>
                              <blockquote type="cite"> HI Benjamin,
                                <div><br>
                                </div>
                                <div>Thanks for you answer.</div>
                                <div><br>
                                </div>
                                <div>I just deleted the XCodeBuild
                                  folder and added a couple of files in
                                  the project manually.&nbsp;</div>
                                <div>My computer is re-building the
                                  project, I will see how it goes.</div>
                                <div>A couple of extra questions:</div>
                                <div><br>
                                </div>
                                <div>1) After deleting the XCodeBuild
                                  folder, I cannot make my first build
                                  using Xcode. I end up with a file not
                                  found on&nbsp;</div>
                                <div>
                                  <div style="margin:0px;font-size:11px;font-family:Menlo;color:rgb(228,68,72)"><span style="color:#d28f5a">#include </span>&lt;llvm-c/Analysis.h&gt;</div>
                                  <div>in
                                    JavaScriptCore/llvm/LLVMHeaders.h</div>
                                  <div>I actually had the same issue on
                                    my first build. After a successful
                                    build from build-webkit, I can build
                                    again using Xcode (not clean and
                                    build).</div>
                                  <div>Any lead regarding why?</div>
                                </div>
                              </blockquote>
                            </div>
                            No idea, I only use build-webkit and make
                            for building.<br>
                            A lot of people use Xcode so there must be a
                            way to get it to work.
                            <div class=""><br>
                              <blockquote type="cite">
                                <div>
                                  <div>2) The Xcode projects is
                                    versioned on the repo. Is there
                                    anyway to re-generate it
                                    automatically?</div>
                                  <div>Having the Xcode project shared
                                    sounds very unsafe. What is someone
                                    introduces a bug in it someday?</div>
                                </div>
                              </blockquote>
                            </div>
                            The Xcode project files are not generated,
                            they are real project files created by
                            Xcode. WebKit contributors maintain 3 build
                            systems in parallel: Xcode, CMake, and VS.
                            <div>
                              <div class="h5">
                                <blockquote type="cite">
                                  <div>
                                    <div>Regards,</div>
                                    <div>J-O H</div>
                                    <div>
                                      <div style="font-family:
                                        Helvetica; font-size: 12px;
                                        font-style: normal;
                                        font-variant: normal;
                                        font-weight: normal;
                                        letter-spacing: normal;
                                        line-height: normal; text-align:
                                        start; text-indent: 0px;
                                        text-transform: none;
                                        white-space: normal;
                                        word-spacing: 0px;">
                                        <span style="color:rgb(34,34,34);font-family:arial,sans-serif;font-size:13px;background-color:rgb(255,255,255)"><br>
                                          --</span></div>
                                      <div style="font-family:
                                        Helvetica; font-size: 12px;
                                        font-style: normal;
                                        font-variant: normal;
                                        font-weight: normal;
                                        letter-spacing: normal;
                                        line-height: normal; text-align:
                                        start; text-indent: 0px;
                                        text-transform: none;
                                        white-space: normal;
                                        word-spacing: 0px;">
                                        <span style="color:rgb(34,34,34);font-family:arial,sans-serif;font-size:13px;background-color:rgb(255,255,255)">Haché
                                          Jacques-Olivier</span><br style="color:rgb(34,34,34);font-family:arial,sans-serif;font-size:13px">
                                        <span style="color:rgb(34,34,34);font-family:arial,sans-serif;font-size:13px">R&amp;D
                                          Engineer at Temasys
                                          Communications Pte Ltd</span><br>
                                        <div style="color:rgb(34,34,34);font-family:arial,sans-serif;font-size:13px">Fr
                                          : 06 45 85 48 80<br>
                                        </div>
                                        <div style="color:rgb(34,34,34);font-family:arial,sans-serif;font-size:13px">Sg
                                          : 9086 3673&nbsp;</div>
                                      </div>
                                    </div>
                                    <br>
                                    <div>
                                      <div>On 22 Jul 2014, at 15:16,
                                        Benjamin Poulain &lt;<a moz-do-not-send="true" href="mailto:benjamin@webkit.org" target="_blank">benjamin@webkit.org</a>&gt;

                                        wrote:</div>
                                      <br>
                                      <blockquote type="cite">
                                        <div bgcolor="#FFFFFF" text="#000000"> Quick answers
                                          inline:<br>
                                          <br>
                                          <div>On 7/21/14, 9:22 PM,
                                            Jacques-Olivier wrote:<br>
                                          </div>
                                          <blockquote type="cite">
                                            <div>
                                              <div style="font-family:Helvetica;font-size:12px;font-style:normal;font-variant:normal;font-weight:normal;letter-spacing:normal;line-height:normal;text-align:start;text-indent:0px;text-transform:none;white-space:normal;word-spacing:0px">
                                                <div>Note: I already
                                                  sent this email, but I
                                                  didn’t get any answer,
                                                  nor can I see the
                                                  thread in the
                                                  archives. Therefore I
                                                  think it was blocked,
                                                  maybe because of the
                                                  attachment that I
                                                  remove this time.</div>
                                                <div><br>
                                                </div>
                                                <div>I’m new on this
                                                  mailing so I’ll start
                                                  by introducing myself:</div>
                                                <div>My name
                                                  Jacques-Olivier Haché
                                                  (J-O), I’m working for
                                                  Temasys Communication,
                                                  and I’m entering the
                                                  WebKit project to work
                                                  on the implementation
                                                  of WebRTC inside
                                                  WebKit.</div>
                                                <div>For those who would
                                                  be following the
                                                  WebRTC’s news, I’m
                                                  also the main
                                                  developer of the
                                                  WebRTC plugin released
                                                  by Temasys.</div>
                                                <div><br>
                                                </div>
                                                <div>Back to business:</div>
                                                <div><br>
                                                </div>
                                                <div>I was able to
                                                  download the project,
                                                  build it and run it
                                                  inside Safari. I did
                                                  not try to run it in a
                                                  different browser yet.</div>
                                                <div><br>
                                                </div>
                                                <div>My configuration:</div>
                                                <div>
                                                  <ul>
                                                    <li>Macbook Air 2012</li>
                                                    <li>Mac OS X 10.9.4</li>
                                                    <li>Revision&nbsp;171167</li>
                                                    <li>I’m on master</li>
                                                    <li>I suppose I’m
                                                      using the regular
                                                      Mac port as I
                                                      didn’t see where
                                                      to change from one
                                                      port to another
                                                      yet.</li>
                                                    <li>building for
                                                      debug mode</li>
                                                  </ul>
                                                </div>
                                                <div>I am now trying to
                                                  enable the WebRTC
                                                  related features to
                                                  get a better
                                                  understanding of the
                                                  current state of this
                                                  part of the project.&nbsp;</div>
                                                <div>I have to say that
                                                  I faced a lack of
                                                  documentation on this
                                                  area. I found the&nbsp;<a moz-do-not-send="true" href="https://trac.webkit.org/wiki/FeatureFlags" target="_blank">features


                                                    list</a>, a document
                                                  about&nbsp;<a moz-do-not-send="true" href="https://trac.webkit.org/wiki/AddingFeatures" target="_blank">how
                                                    to add a new feature</a>&nbsp;but
                                                  nothing about how to
                                                  turn a feature on and
                                                  off (there is actually
                                                  a TODO about that in
                                                  the second link).</div>
                                                <div><br>
                                                </div>
                                                <div>I looked into the
                                                  files that one needs
                                                  to change to add a new
                                                  feature and found two
                                                  interesting files:</div>
                                                <div>
                                                  <ul>
                                                    <li><span style="background-color:rgb(255,255,255)">Source/WTF/wtf/FeatureDefines.h
                                                        - where the
                                                        WebRTC related
                                                        contants were
                                                        set to 0&nbsp;instead
                                                        of 1</span></li>
                                                    <li>Source/cmake/WebKitFeatures.cmake
                                                      - where the
                                                      contants were set
                                                      to OFF</li>
                                                  </ul>
                                                </div>
                                                <div>I listed the
                                                  following definitions
                                                  that look related to
                                                  WebRTC</div>
                                                <div>
                                                  <ul>
                                                    <li>ENABLE_MEDIA_CAPTURE</li>
                                                    <li>ENABLE_MEDIA_CONTROLS_SCRIPT</li>
                                                    <li>ENABLE_MEDIA_SOURCE</li>
                                                    <li>ENABLE_MEDIA_STATISTICS</li>
                                                    <li>ENABLE_MEDIA_STREAM</li>
                                                    <li>ENABLE_VIDEO</li>
                                                    <li>ENABLE_VIDEO_TRACK</li>
                                                  </ul>
                                                </div>
                                                <div>I turned those
                                                  definitions to 1 and
                                                  ON in the respective
                                                  file and tried to
                                                  build.</div>
                                                <div>The code in the
                                                  header
                                                  WebCore/Modules/mediastream/mediastream.h
                                                  could not compile
                                                  apparently because the
                                                  observer did not have
                                                  a destructor. I
                                                  created one:</div>
                                                <div>
                                                  <div>&nbsp; &nbsp; class
                                                    Observer {</div>
                                                  <div>&nbsp; &nbsp; public:</div>
                                                  <div>&nbsp; &nbsp; &nbsp; &nbsp; virtual
                                                    void
                                                    didAddOrRemoveTrack()
                                                    = 0;</div>
                                                  <div>&nbsp; &nbsp; &nbsp; virtual
                                                    ~Observer() {};</div>
                                                  <div>&nbsp; &nbsp; };</div>
                                                </div>
                                                <div><br>
                                                </div>
                                                <div>and tried to build
                                                  again.<br>
                                                  <br>
                                                </div>
                                                <div>I now have a
                                                  linking error when
                                                  building WebCore with
                                                  Xcode.&nbsp;</div>
                                                <div><br>
                                                </div>
                                                <div>
                                                  <div style="margin:0px
                                                    0px 0px
                                                    12px;font-size:11px;font-family:Menlo">Ld

                                                    /Users/jacquesolivierhache/Workspace/Temasys/WebKitProject/WebKit/WebKitBuild/Debug/WebCore.framework/Versions/A/WebCore


                                                    normal x86_64</div>
                                                  <div style="margin:0px
                                                    0px 0px
                                                    12px;font-size:11px;font-family:Menlo">&nbsp;
                                                    &nbsp; cd
/Users/jacquesolivierhache/Workspace/Temasys/WebKitProject/WebKit/Source/WebCore</div>
                                                  <div style="margin:0px
                                                    0px 0px
                                                    12px;font-size:11px;font-family:Menlo">&nbsp;
                                                    &nbsp; export
                                                    MACOSX_DEPLOYMENT_TARGET=10.9</div>
                                                  <div style="margin:0px
                                                    0px 0px
                                                    12px;font-size:11px;font-family:Menlo">&nbsp;
                                                    &nbsp;
                                                    /Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/clang++


                                                    -arch x86_64
                                                    -dynamiclib
                                                    -isysroot
                                                    /Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.9.sdk


                                                    -L/Users/jacquesolivierhache/Workspace/Temasys/WebKitProject/WebKit/WebKitBuild/Debug


                                                    -F/Users/jacquesolivierhache/Workspace/Temasys/WebKitProject/WebKit/WebKitBuild/Debug


                                                    -filelist
                                                    /Users/jacquesolivierhache/Workspace/Temasys/WebKitProject/WebKit/WebKitBuild/WebCore.build/Debug/WebCore.build/Objects-normal/x86_64/WebCore.LinkFileList


                                                    -Xlinker
                                                    --no-demangle
                                                    -exported_symbols_list
                                                    /Users/jacquesolivierhache/Workspace/Temasys/WebKitProject/WebKit/WebKitBuild/Debug/DerivedSources/WebCore/WebCore.LP64.exp


                                                    -install_name
                                                    /System/Library/Frameworks/WebKit.framework/Versions/A/Frameworks/WebCore.framework/Versions/A/WebCore


                                                    -mmacosx-version-min=10.9
                                                    -lsqlite3 -lobjc
                                                    -lANGLE -sub_library
                                                    libobjc -umbrella
                                                    WebKit
                                                    -allowable_client
                                                    WebCoreTestSupport
                                                    -allowable_client
                                                    WebKit2
                                                    -allowable_client
                                                    WebKitLegacy
                                                    -framework
                                                    ApplicationServices
                                                    -framework AudioUnit
                                                    -framework Carbon
                                                    -framework Cocoa
                                                    -framework IOSurface
                                                    -framework OpenGL
                                                    -stdlib=libc++
                                                    -fobjc-link-runtime
                                                    -framework
                                                    Accelerate
                                                    -framework
                                                    AudioToolbox
                                                    -framework CoreAudio
                                                    -framework IOKit
                                                    -framework
                                                    JavaScriptCore
                                                    -licucore -lobjc
                                                    -lxml2 -lz
                                                    -framework
                                                    QuartzCore
                                                    -framework Security
                                                    -framework
                                                    SystemConfiguration
                                                    -single_module
                                                    -compatibility_version
                                                    1 -current_version
                                                    600.1 -Xlinker
                                                    -dependency_info
                                                    -Xlinker
                                                    /Users/jacquesolivierhache/Workspace/Temasys/WebKitProject/WebKit/WebKitBuild/WebCore.build/Debug/WebCore.build/Objects-normal/x86_64/WebCore_dependency_info.dat


                                                    -o
/Users/jacquesolivierhache/Workspace/Temasys/WebKitProject/WebKit/WebKitBuild/Debug/WebCore.framework/Versions/A/WebCore</div>
                                                  <div style="margin:0px
                                                    0px 0px
                                                    12px;font-size:11px;font-family:Menlo;min-height:13px"><br>
                                                  </div>
                                                  <div style="margin:0px
                                                    0px 0px
                                                    12px;font-size:11px;font-family:Menlo">Undefined

                                                    symbols for
                                                    architecture x86_64:</div>
                                                  <div style="margin:0px
                                                    0px 0px
                                                    12px;font-size:11px;font-family:Menlo">&nbsp;
                                                    "__ZN7WebCore11JSNavigator18webkitGetUserMediaEPN3JSC9ExecStateE",

                                                    referenced from:</div>
                                                  <div style="margin:0px
                                                    0px 0px
                                                    12px;font-size:11px;font-family:Menlo">&nbsp;
                                                    &nbsp; &nbsp;
                                                    __ZN7WebCore46jsNavigatorPrototypeFunctionWebkitGetUserMediaEPN3JSC9ExecStateE


                                                    in JSNavigator.o</div>
                                                  <div style="margin:0px
                                                    0px 0px
                                                    12px;font-size:11px;font-family:Menlo">&nbsp;
                                                    "__ZN7WebCore15RTCOfferOptions6createERKNS_10DictionaryERi",

                                                    referenced from:</div>
                                                  <div style="margin:0px
                                                    0px 0px
                                                    12px;font-size:11px;font-family:Menlo">&nbsp;
                                                    &nbsp; &nbsp;
                                                    __ZN7WebCore17RTCPeerConnection11createOfferEN3WTF10PassRefPtrINS_29RTCSessionDescriptionCallbackEEENS2_INS_30RTCPeerConnectionErrorCallbackEEERKNS_10DictionaryERi


                                                    in
                                                    RTCPeerConnection.o</div>
                                                  <div style="margin:0px
                                                    0px 0px
                                                    12px;font-size:11px;font-family:Menlo">&nbsp;
                                                    "__ZN7WebCore20MediaConstraintsMock17verifyConstraintsEN3WTF10PassRefPtrINS_16MediaConstraintsEEE",


                                                    referenced from:</div>
                                                  <div style="margin:0px
                                                    0px 0px
                                                    12px;font-size:11px;font-family:Menlo">&nbsp;
                                                    &nbsp; &nbsp;
                                                    __ZN7WebCore21MockMediaStreamCenter26validateRequestConstraintsEN3WTF10PassRefPtrINS_25MediaStreamCreationClientEEENS2_INS_16MediaConstraintsEEES6_


                                                    in
                                                    MockMediaStreamCenter.o</div>
                                                  <div style="margin:0px
                                                    0px 0px
                                                    12px;font-size:11px;font-family:Menlo">&nbsp;
                                                    &nbsp; &nbsp;
                                                    __ZN7WebCore21MockMediaStreamCenter17createMediaStreamEN3WTF10PassRefPtrINS_25MediaStreamCreationClientEEENS2_INS_16MediaConstraintsEEES6_


                                                    in
                                                    MockMediaStreamCenter.o</div>
                                                  <div style="margin:0px
                                                    0px 0px
                                                    12px;font-size:11px;font-family:Menlo">&nbsp;
                                                    "__ZN7WebCore21RTCOfferAnswerOptions6createERKNS_10DictionaryERi",

                                                    referenced from:</div>
                                                  <div style="margin:0px
                                                    0px 0px
                                                    12px;font-size:11px;font-family:Menlo">&nbsp;
                                                    &nbsp; &nbsp;
                                                    __ZN7WebCore17RTCPeerConnection12createAnswerEN3WTF10PassRefPtrINS_29RTCSessionDescriptionCallbackEEENS2_INS_30RTCPeerConnectionErrorCallbackEEERKNS_10DictionaryERi


                                                    in
                                                    RTCPeerConnection.o</div>
                                                  <div style="margin:0px
                                                    0px 0px
                                                    12px;font-size:11px;font-family:Menlo">&nbsp;
                                                    "__ZN7WebCore4toJSEPN3JSC9ExecStateEPNS_17JSDOMGlobalObjectEPNS_16RTCConfigurationE",


                                                    referenced from:</div>
                                                  <div style="margin:0px
                                                    0px 0px
                                                    12px;font-size:11px;font-family:Menlo">&nbsp;
                                                    &nbsp; &nbsp;
                                                    __ZN7WebCore52jsRTCPeerConnectionPrototypeFunctionGetConfigurationEPN3JSC9ExecStateE


                                                    in
                                                    JSRTCPeerConnection.o</div>
                                                  <div style="margin:0px
                                                    0px 0px
                                                    12px;font-size:11px;font-family:Menlo">ld:

                                                    symbol(s) not found
                                                    for architecture
                                                    x86_64</div>
                                                  <div style="margin:0px
                                                    0px 0px
                                                    12px;font-size:11px;font-family:Menlo">clang:

                                                    error: linker
                                                    command failed with
                                                    exit code 1 (use -v
                                                    to see invocation)</div>
                                                </div>
                                                <div>
                                                  <div><br>
                                                  </div>
                                                  <div>I found that
                                                    these strange names
                                                    actually meant
                                                    WebCore::JSNavigator::webkitGetUserMedia(execState
                                                    *) - and same for
                                                    the others.</div>
                                                  <div>Xcode will not
                                                    find the definition
                                                    of these functions,
                                                    but Sublime_Text
                                                    will. It looks like
                                                    Xcode projects don’t
                                                    include the files
                                                    containing these
                                                    definitions.</div>
                                                  <div>Am I supposed to
                                                    run a script to
                                                    re-generate the
                                                    projects once I
                                                    enable new features?
                                                    If yes, I cannot
                                                    find such a script.</div>
                                                  <div>I tried running
                                                    cmake, but got this
                                                    message:</div>
                                                  <div>
                                                    <div>Please choose
                                                      which WebKit port
                                                      to build (one of
                                                      Efl;WinCE;GTK;AppleWin;WinCairo)</div>
                                                  </div>
                                                  <div>When what I want
                                                    is the AppleMac port</div>
                                                  <div><br>
                                                  </div>
                                                  <div>If I build using
                                                    build-webkit, I get
                                                    a different stack</div>
                                                  <div><br>
                                                  </div>
                                                  <div><br>
                                                  </div>
                                                  <div>
                                                    <div>=== BUILD
                                                      TARGET
                                                      WebCoreExportFileGenerator
                                                      OF PROJECT WebCore
                                                      WITH CONFIGURATION
                                                      Debug ===</div>
                                                    <div><br>
                                                    </div>
                                                    <div>Check
                                                      dependencies</div>
                                                    <div>iOS.xcconfig
                                                      line 1: Unable to
                                                      find included file
"&lt;DEVELOPER_DIR&gt;/AppleInternal/XcodeConfig/AspenFamily.xcconfig"</div>
                                                    <div>Base.xcconfig
                                                      line 24: Unable to
                                                      find included file
"../../../../Internal/Configurations/UseInternalSDK.xcconfig"</div>
                                                    <div><br>
                                                    </div>
                                                    <div>CompileC
                                                      /Users/jacquesolivierhache/Workspace/Temasys/WebKitProject/WebKit/WebKitBuild/WebCore.build/Debug/WebCoreExportFileGenerator.build/Objects-normal/x86_64/ExportFileGenerator.o


                                                      /Users/jacquesolivierhache/Workspace/Temasys/WebKitProject/WebKit/WebKitBuild/Debug/DerivedSources/WebCore/ExportFileGenerator.cpp


                                                      normal x86_64 c++
com.apple.compilers.llvm.clang.1_0.compiler</div>
                                                    <div>&nbsp; &nbsp; cd
/Users/jacquesolivierhache/Workspace/Temasys/WebKitProject/WebKit/Source/WebCore</div>
                                                    <div>&nbsp; &nbsp; export
                                                      LANG=en_US.US-ASCII</div>
                                                    <div>&nbsp; &nbsp;
                                                      /Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/clang


                                                      -x c++ -arch
                                                      x86_64
                                                      -fmessage-length=204
                                                      -fdiagnostics-show-note-include-stack

                                                      -fmacro-backtrace-limit=0
                                                      -fcolor-diagnostics

                                                      -std=gnu++11
                                                      -stdlib=libc++
                                                      -Wno-trigraphs
                                                      -fno-exceptions
                                                      -fno-rtti
                                                      -fpascal-strings
                                                      -O0 -Werror
                                                      -Wno-missing-field-initializers
                                                      -Wmissing-prototypes
                                                      -Wnon-virtual-dtor
                                                      -Wno-overloaded-virtual

                                                      -Wno-exit-time-destructors
                                                      -Wno-missing-braces

                                                      -Wparentheses
                                                      -Wswitch
                                                      -Wunused-function
                                                      -Wno-unused-label
                                                      -Wno-unused-parameter

                                                      -Wunused-variable
                                                      -Wunused-value
                                                      -Wempty-body
                                                      -Wuninitialized
                                                      -Wno-unknown-pragmas
                                                      -Wno-shadow
                                                      -Wno-four-char-constants
                                                      -Wno-conversion
                                                      -Wconstant-conversion
                                                      -Wint-conversion
                                                      -Wbool-conversion
                                                      -Wenum-conversion
                                                      -Wsign-compare
                                                      -Wno-shorten-64-to-32
                                                      -Wnewline-eof
                                                      -Wno-c++11-extensions
                                                      -DDISABLE_THREAD_CHECK

                                                      -DENABLE_3D_RENDERING

                                                      -DENABLE_CACHE_PARTITIONING

                                                      -DENABLE_CANVAS_PATH

                                                      -DENABLE_CHANNEL_MESSAGING

                                                      -DENABLE_CSS_BOX_DECORATION_BREAK

                                                      -DENABLE_CSS_COMPOSITING

                                                      -DENABLE_CSS_EXCLUSIONS
                                                      -DENABLE_CSS_FILTERS

                                                      -DENABLE_CSS_GRID_LAYOUT
                                                      -DENABLE_CSS_REGIONS

                                                      -DENABLE_CSS_SHAPES

                                                      -DENABLE_CSS_TRANSFORMS_ANIMATIONS_UNPREFIXED

                                                      -DENABLE_CSS3_CONDITIONAL_RULES

                                                      -DENABLE_CURSOR_VISIBILITY

                                                      -DENABLE_DASHBOARD_SUPPORT

                                                      -DENABLE_DETAILS_ELEMENT

                                                      -DENABLE_DOM4_EVENTS_CONSTRUCTOR

                                                      -DENABLE_ENCRYPTED_MEDIA

                                                      -DENABLE_ENCRYPTED_MEDIA_V2
                                                      -DENABLE_FILTERS
                                                      -DENABLE_FULLSCREEN_API
                                                      -DENABLE_GAMEPAD
                                                      -DENABLE_GEOLOCATION
                                                      -DENABLE_HIDDEN_PAGE_DOM_TIMER_THROTTLING

                                                      -DENABLE_ICONDATABASE

                                                      -DENABLE_INDEXED_DATABASE
                                                      -DENABLE_INDIE_UI
                                                      -DENABLE_INPUT_TYPE_COLOR

                                                      -DENABLE_INPUT_TYPE_COLOR_POPOVER

                                                      -DENABLE_INSPECTOR
                                                      -DENABLE_LEGACY_CSS_VENDOR_PREFIXES

                                                      -DENABLE_LEGACY_NOTIFICATIONS

                                                      -DENABLE_LEGACY_VENDOR_PREFIXES

                                                      -DENABLE_LEGACY_WEB_AUDIO
                                                      -DENABLE_MATHML
                                                      -DENABLE_MEDIA_CONTROLS_SCRIPT
                                                      -DENABLE_METER_ELEMENT

                                                      -DENABLE_MOUSE_CURSOR_SCALE

                                                      -DENABLE_NAVIGATOR_CONTENT_UTILS

                                                      -DENABLE_NAVIGATOR_HWCONCURRENCY

                                                      -DENABLE_NOTIFICATIONS
                                                      -DENABLE_PDFKIT_PLUGIN

                                                      -DENABLE_PROMISES
                                                      -DENABLE_PUBLIC_SUFFIX_LIST

                                                      -DENABLE_REQUEST_ANIMATION_FRAME

                                                      -DENABLE_SHARED_WORKERS

                                                      -DENABLE_SPEECH_SYNTHESIS

                                                      -DENABLE_SQL_DATABASE
                                                      -DENABLE_SUBPIXEL_LAYOUT

                                                      -DENABLE_SUBTLE_CRYPTO
                                                      -DENABLE_SVG_FONTS
                                                      -DENABLE_TEMPLATE_ELEMENT

                                                      -DENABLE_USERSELECT_ALL
                                                      -DENABLE_VIDEO
                                                      -DENABLE_VIDEO_TRACK
                                                      -DENABLE_DATACUE_VALUE

                                                      -DENABLE_WEBGL
                                                      -DENABLE_WEB_AUDIO
                                                      -DENABLE_WEB_REPLAY
                                                      -DENABLE_WEB_SOCKETS

                                                      -DENABLE_PICTURE_SIZES
                                                      -DENABLE_WEBVTT_REGIONS

                                                      -DENABLE_XHR_TIMEOUT
                                                      -DENABLE_XSLT
                                                      -DENABLE_FTL_JIT
                                                      -DWEBKIT_VERSION_MIN_REQUIRED=WEBKIT_VERSION_LATEST
                                                      -isysroot
                                                      /Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.9.sdk


                                                      -fasm-blocks
                                                      -fstrict-aliasing
                                                      -Wdeprecated-declarations
                                                      -Winvalid-offsetof
                                                      -mmacosx-version-min=10.9
                                                      -g
                                                      -fvisibility=hidden
                                                      -fvisibility-inlines-hidden

                                                      -fno-threadsafe-statics
                                                      -Wno-sign-conversion

                                                      -I/Users/jacquesolivierhache/Workspace/Temasys/WebKitProject/WebKit/WebKitBuild/WebCore.build/Debug/WebCoreExportFileGenerator.build/WebCoreExportFileGenerator.hmap


                                                      -I/Users/jacquesolivierhache/Workspace/Temasys/WebKitProject/WebKit/WebKitBuild/Debug/include


                                                      -IForwardingHeaders
                                                      -Iicu
                                                      -I/Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.9.sdk/usr/include/libxslt


                                                      -I/Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.9.sdk/usr/include/libxml2


                                                      -I/Users/jacquesolivierhache/Workspace/Temasys/WebKitProject/WebKit/WebKitBuild/Debug/DerivedSources/WebCore


                                                      -I/Users/jacquesolivierhache/Workspace/Temasys/WebKitProject/WebKit/WebKitBuild/Debug/usr/local/include


                                                      -I/Users/jacquesolivierhache/Workspace/Temasys/WebKitProject/WebKit/WebKitBuild/Debug/usr/local/include/WebKitAdditions


                                                      -I/Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.9.sdk/usr/local/include/WebKitAdditions


                                                      -I/Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/include


                                                      -I/Users/jacquesolivierhache/Workspace/Temasys/WebKitProject/WebKit/WebKitBuild/WebCore.build/Debug/WebCoreExportFileGenerator.build/DerivedSources/x86_64


                                                      -I/Users/jacquesolivierhache/Workspace/Temasys/WebKitProject/WebKit/WebKitBuild/WebCore.build/Debug/WebCoreExportFileGenerator.build/DerivedSources


                                                      -Wall -Wextra
                                                      -Wcast-qual
                                                      -Wchar-subscripts
                                                      -Wextra-tokens
                                                      -Wformat=2
                                                      -Winit-self
                                                      -Wmissing-format-attribute
                                                      -Wmissing-noreturn
                                                      -Wpacked
                                                      -Wpointer-arith
                                                      -Wredundant-decls
                                                      -Wundef
                                                      -Wwrite-strings
                                                      -Wexit-time-destructors
                                                      -Wglobal-constructors

                                                      -Wtautological-compare
                                                      -Wimplicit-fallthrough

                                                      -F/Users/jacquesolivierhache/Workspace/Temasys/WebKitProject/WebKit/WebKitBuild/Debug


                                                      -include
                                                      /Users/jacquesolivierhache/Workspace/Temasys/WebKitProject/WebKit/WebKitBuild/PrecompiledHeaders/WebCorePrefix-gcoyowpevvvzkbecqfhdngvxbkag/WebCorePrefix.h


                                                      -MMD -MT
                                                      dependencies -MF
                                                      /Users/jacquesolivierhache/Workspace/Temasys/WebKitProject/WebKit/WebKitBuild/WebCore.build/Debug/WebCoreExportFileGenerator.build/Objects-normal/x86_64/ExportFileGenerator.d


                                                      --serialize-diagnostics

                                                      /Users/jacquesolivierhache/Workspace/Temasys/WebKitProject/WebKit/WebKitBuild/WebCore.build/Debug/WebCoreExportFileGenerator.build/Objects-normal/x86_64/ExportFileGenerator.dia


                                                      -c
                                                      /Users/jacquesolivierhache/Workspace/Temasys/WebKitProject/WebKit/WebKitBuild/Debug/DerivedSources/WebCore/ExportFileGenerator.cpp


                                                      -o
/Users/jacquesolivierhache/Workspace/Temasys/WebKitProject/WebKit/WebKitBuild/WebCore.build/Debug/WebCoreExportFileGenerator.build/Objects-normal/x86_64/ExportFileGenerator.o</div>
                                                    <div>fatal error:
                                                      file
                                                      '/Users/jacquesolivierhache/Workspace/Temasys/WebKitProject/WebKit/WebKitBuild/Debug/usr/local/include/wtf/FeatureDefines.h'


                                                      has been modified
                                                      since the
                                                      precompiled header</div>
                                                    <div>&nbsp; &nbsp; &nbsp;
                                                      '/Users/jacquesolivierhache/Workspace/Temasys/WebKitProject/WebKit/WebKitBuild/PrecompiledHeaders/WebCorePrefix-gcoyowpevvvzkbecqfhdngvxbkag/WebCorePrefix.h.pch'


                                                      was built</div>
                                                    <div>1 error
                                                      generated.</div>
                                                    <div><br>
                                                    </div>
                                                    <div>** BUILD FAILED
                                                      **</div>
                                                  </div>
                                                  <div><br>
                                                  </div>
                                                  <div>
                                                    <div><br>
                                                    </div>
                                                    <div>The following
                                                      build commands
                                                      failed:</div>
                                                    <div><span style="white-space:pre-wrap">
                                                      </span>CompileC
                                                      /Users/jacquesolivierhache/Workspace/Temasys/WebKitProject/WebKit/WebKitBuild/WebCore.build/Debug/WebCoreExportFileGenerator.build/Objects-normal/x86_64/ExportFileGenerator.o


                                                      /Users/jacquesolivierhache/Workspace/Temasys/WebKitProject/WebKit/WebKitBuild/Debug/DerivedSources/WebCore/ExportFileGenerator.cpp


                                                      normal x86_64 c++
com.apple.compilers.llvm.clang.1_0.compiler</div>
                                                    <div>(1 failure)</div>
                                                  </div>
                                                  <div><br>
                                                  </div>
                                                  <div><br>
                                                  </div>
                                                  <div>
                                                    <div><br>
                                                    </div>
                                                    <div>Is anyone used
                                                      to turn the WebRTC
                                                      code on and off?</div>
                                                  </div>
                                                </div>
                                              </div>
                                            </div>
                                          </blockquote>
                                          This code has not been updated
                                          in a while, you will have to
                                          fix some stuff here and there
                                          to get it to do anything.<br>
                                          <blockquote type="cite">
                                            <div>
                                              <div style="font-family:Helvetica;font-size:12px;font-style:normal;font-variant:normal;font-weight:normal;letter-spacing:normal;line-height:normal;text-align:start;text-indent:0px;text-transform:none;white-space:normal;word-spacing:0px">
                                                <div>
                                                  <div>
                                                    <div>Did I miss an
                                                      important step?</div>
                                                  </div>
                                                </div>
                                              </div>
                                            </div>
                                          </blockquote>
                                          Probably not.<br>
                                          <blockquote type="cite">
                                            <div>
                                              <div style="font-family:Helvetica;font-size:12px;font-style:normal;font-variant:normal;font-weight:normal;letter-spacing:normal;line-height:normal;text-align:start;text-indent:0px;text-transform:none;white-space:normal;word-spacing:0px">
                                                <div>
                                                  <div>
                                                    <div>Do you
                                                      understand these
                                                      errors?</div>
                                                  </div>
                                                </div>
                                              </div>
                                            </div>
                                          </blockquote>
                                          The first error could simply
                                          be because the files defining
                                          those symbols are not included
                                          in the XCode project file.
                                          Nobody has worked on WebRTC
                                          for a while, it probably only
                                          builds for GTK.<br>
                                          <br>
                                          The second error is likely a
                                          problem with the incremental
                                          build. I would just delete
                                          WebKitBuild and start a clean
                                          build.<br>
                                          <blockquote type="cite">
                                            <div>
                                              <div style="font-family:Helvetica;font-size:12px;font-style:normal;font-variant:normal;font-weight:normal;letter-spacing:normal;line-height:normal;text-align:start;text-indent:0px;text-transform:none;white-space:normal;word-spacing:0px">
                                                <div>
                                                  <div>
                                                    <div>Why is the
                                                      precompiled header
                                                      not re-built when
                                                      there are changes
                                                      in the headers?</div>
                                                  </div>
                                                </div>
                                              </div>
                                            </div>
                                          </blockquote>
                                          Yep, that's weird. I only run
                                          into problems with precompiled
                                          headers when I change my SDK.<br>
                                          But after changing feature
                                          flags you often have to do a
                                          clean build anyway. There are
                                          too many code generators that
                                          are not tracking these kind of
                                          dependencies.<br>
                                          <br>
                                          Good luck!<br>
                                          Benjamin<br>
                                        </div>
_______________________________________________<br>
                                        webkit-dev mailing list<br>
                                        <a moz-do-not-send="true" href="mailto:webkit-dev@lists.webkit.org" target="_blank">webkit-dev@lists.webkit.org</a><br>
                                        <a moz-do-not-send="true" href="https://lists.webkit.org/mailman/listinfo/webkit-dev" target="_blank">https://lists.webkit.org/mailman/listinfo/webkit-dev</a><br>
                                      </blockquote>
                                    </div>
                                    <br>
                                  </div>
                                </blockquote>
                                <br>
                              </div>
                            </div>
                          </div>
                          <br>
_______________________________________________<br>
                          webkit-dev mailing list<br>
                          <a moz-do-not-send="true" href="mailto:webkit-dev@lists.webkit.org">webkit-dev@lists.webkit.org</a><br>
                          <a moz-do-not-send="true" href="https://lists.webkit.org/mailman/listinfo/webkit-dev" target="_blank">https://lists.webkit.org/mailman/listinfo/webkit-dev</a><br>
                          <br>
                        </blockquote>
                      </div>
                      <br>
                      <br clear="all">
                      <div><br>
                      </div>
                      -- <br>
                      <div dir="ltr">Alex. Gouaillard, PhD, PhD, MBA
                        <div>------------------------------------------------------------------------------------</div>
                        <div>CTO - Temasys Communications, S'pore /
                          Mountain View</div>
                        <div>President - CoSMo Software, Cambridge, MA</div>
                        <div>------------------------------------------------------------------------------------</div>
                        <div><a moz-do-not-send="true" href="http://sg.linkedin.com/agouaillard" target="_blank">sg.linkedin.com/agouaillard</a></div>
                        <div>
                          <ul style="margin:0px;padding:0px 0px
8px;border:0px;outline:0px;font-size:12px;font-family:Helvetica,Arial,sans-serif;vertical-align:baseline;list-style:none;line-height:17px;display:table-cell;width:504px;color:rgb(51,51,51)">
                            <li style="margin:0px;padding:8px 12px 2px
0px;border:0px;outline:0px;font-style:inherit;font-size:11px;font-family:inherit;vertical-align:baseline;font-variant:inherit;line-height:1.2em">
                              <dl style="margin:0px;padding:0px;border:0px;outline:0px;font-style:inherit;font-family:inherit;vertical-align:baseline;font-variant:inherit;line-height:inherit;word-wrap:break-word">
                                <br>
                              </dl>
                            </li>
                          </ul>
                        </div>
                      </div>
                    </div>
                  </blockquote>
                </div>
                <br>
              </div>
            </div>
          </blockquote>
        </div>
        <br>
      </div>
      <br>
      <fieldset class="mimeAttachmentHeader"></fieldset>
      <br>
      <pre wrap="">_______________________________________________
webkit-dev mailing list
<a class="moz-txt-link-abbreviated" href="mailto:webkit-dev@lists.webkit.org">webkit-dev@lists.webkit.org</a>
<a class="moz-txt-link-freetext" href="https://lists.webkit.org/mailman/listinfo/webkit-dev">https://lists.webkit.org/mailman/listinfo/webkit-dev</a>
</pre>
    </blockquote>
    <br>
  </div>

_______________________________________________<br>webkit-dev mailing list<br><a href="mailto:webkit-dev@lists.webkit.org">webkit-dev@lists.webkit.org</a><br>https://lists.webkit.org/mailman/listinfo/webkit-dev<br></blockquote></div><br></div></body></html>