Changes between Version 3 and Version 4 of ASanWebKit

Timestamp:

Nov 5, 2014 8:52:27 AM (9 years ago)

Author:

Bem Jones-Bey

Comment:

Update with my learnings

ASanWebKit

@@ -16 +16 @@
 /Applications/Xcode.app/Contents/Developer/Toolchains/OSX10.9.xctoolchain/
 }}}
- 3. Make a copy of the `OSX10.9.xctoolchain` and call it `ASAN.xctoolchain`:
+ With Xcode 6.1 on 10.9.5, the SDK is in:
+ {{{
+/Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/
+}}}
+ 3. Make a copy of the `OSX10.9.xctoolchain`(or `XcodeDefault.xctoolchain`) and call it `ASAN.xctoolchain`:
 {{{
 sudo ditto /Applications/Xcode.app/Contents/Developer/Toolchains/OSX10.9.xctoolchain /Applications/Xcode.app/Contents/Developer/Toolchains/ASAN.xctoolchain
 }}}
- 4. Edit `ASAN.xctoolchain/ToolchainInfo.plist` to change the `Identifier` string from `com.apple.dt.toolchain.OSX10_9` to `com.apple.dt.toolchain.ASAN`.
+ 4. Edit `ASAN.xctoolchain/ToolchainInfo.plist` to change the `Identifier` string from `com.apple.dt.toolchain.OSX10_9` to `com.apple.dt.toolchain.ASAN`. (with Xcode 6.1 on 10.9.5, the `Identifier` is `com.apple.dt.toolchain.XcodeDefault`)
 {{{
 sudo vi /Applications/Xcode.app/Contents/Developer/Toolchains/ASAN.xctoolchain/ToolchainInfo.plist
 }}}
  5. Build trunk clang/llvm.  The address sanitizer should be built by default for Mac OS X.  See [http://www.llvm.org/docs/ LLVM Docs] for details.  Subversion revision r204316 of clang/llvm is known to build WebKit for Mac OS X.  Newer versions may introduce new warnings or compiler bugs that must be fixed before proceeding. Alternatively, you can download a prebuilt binary from the [http://commondatastorage.googleapis.com/chromium-browser-clang/index.html?path=Mac/ Chromium Browser Clang] page.
- 6. Ditto the clang/llvm build output into `/Applications/Xcode.app/Contents/Developer/Toolchains/ASAN.xctoolchain` to replace the version of clang/llvm in the original toolchain.
+ 6. Ditto the clang/llvm build output into `/Applications/Xcode.app/Contents/Developer/Toolchains/ASAN.xctoolchain` to replace the version of clang/llvm in the original toolchain. If you downloaded a build from the [http://commondatastorage.googleapis.com/chromium-browser-clang/index.html?path=Mac/ Chromium Browser Clang] page, then it should be as simple as:
 {{{
-TBD
+sudo ditto ~/Downloads/clang-218707/ /Applications/Xcode.app/Contents/Developer/Toolchains/ASAN.xctoolchain/usr/    
 }}}
+ Replacing `~/Downloads/clang-218707/` with the location you extracted the clang archive to. Note that the trailing / on the path is important!
  7. Fix the ID of `libclang_rt.asan_osx_dynamic.dylib` to its installation path using the `install_name_tool`:
 {{{
 sudo xcrun install_name_tool -id /Applications/Xcode.app/Contents/Developer/Toolchains/ASAN.xctoolchain/usr/lib/clang/3.5.0/lib/darwin/libclang_rt.asan_osx_dynamic.dylib /Applications/Xcode.app/Contents/Developer/Toolchains/ASAN.xctoolchain/usr/lib/clang/3.5.0/lib/darwin/libclang_rt.asan_osx_dynamic.dylib
 }}}
+ You may have to change the `3.5.0` in the paths to match the version of clang you are using, especially if you download a build from the [http://commondatastorage.googleapis.com/chromium-browser-clang/index.html?path=Mac/ Chromium Browser Clang] page..
  8. Copy `libclang_rt.asan_osx_dynamic.dylib` into your `WebKitBuild/Release` directory:
 {{{
 ditto /Applications/Xcode.app/Contents/Developer/Toolchains/ASAN.xctoolchain/usr/lib/clang/3.5.0/lib/darwin/libclang_rt.asan_osx_dynamic.dylib WebKitBuild/Release/
 }}}
+ You may have to change the `3.5.0` in the paths to match the version of clang you are using, especially if you download a build from the [http://commondatastorage.googleapis.com/chromium-browser-clang/index.html?path=Mac/ Chromium Browser Clang] page.
  9. Build WebKit with additional xcodebuild arguments to load `asan.xcconfig`, find the ASan ignore list, and build with the new compiler:
 {{{