[tor-bugs] #19001 [Obfuscation/Snowflake]: Tor Browser with Snowflake

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#19001: Tor Browser with Snowflake
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 Reporter:  dcf                    |          Owner:
     Type:  project                |         Status:  new
 Priority:  Medium                 |      Milestone:
Component:  Obfuscation/Snowflake  |        Version:
 Severity:  Normal                 |     Resolution:
 Keywords:                         |  Actual Points:
Parent ID:                         |         Points:
 Reviewer:                         |        Sponsor:
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Comment (by dcf):

 I at last got libwebrtc built for mac and snowflake linking to it. Does it
 work? I don't know! I don't have access to a Mac just now.
   https://gitweb.torproject.org/user/dcf/tor-browser-bundle.git/log/?h
 =snowflake-mac-1
   https://people.torproject.org/~dcf/pt-
 bundle/snowflake/20160806-6.5a1-965e0daa7d59/

 The repository history is a complete disaster, but I decided to just push
 it as it is to a side branch and we can clean it up later. We'll have to
 do a huge rebase anyway before merging to master. Here's
 [https://gitweb.torproject.org/user/dcf/tor-browser-bundle.git/diff/?h
 =snowflake-mac-1&id2=a83d3993eebbad215a81b991918b22bb3ca9bcef the diff]
 relative to the last working linux build.

 At a high level, the main major changes are 1) using clang and libc++ to
 build libwebrtc, and 2) factoring out a separate gitian-webrtc.yml
 descriptor. These changes I'll probably port back to the linux descriptor.
 About the various other necessary hacks, the best thing I can say is they
 are finite in number. There was one
 [https://llvm.org/bugs/show_bug.cgi?id=28831 straight-up bug in CMake]
 that I reported upstream. I had to do some finessing of CFLAGS et al.
 because our clang and 10.7 SDK are a little older than what the build
 script expect. The build really expects you to be doing Mac builds using
 Xcode and I had to work around that assumption in a number of places,
 including a little bit of rewriting of ninja files. The biggest and
 ugliest part is [https://gitweb.torproject.org/user/dcf/tor-browser-
 bundle.git/tree/gitian/patches/webrtc-mac.patch?h=snowflake-mac-1 this
 patch] that gets applied directly to the webrtc sources.

--
Ticket URL: <https://trac.torproject.org/projects/tor/ticket/19001#comment:15>
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