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dart-sdk/tools/buildtools/README.md
Zach Anderson ef139fbef3 [infra] Fix clang-format invocation from git cl format 
Instead of maintaining two very similar python scripts, this change
copies the binaries they were forwarding to to the location expected
by git cl format and depot_tools.

R=aam@google.com

Review-Url: https://codereview.chromium.org/2871673003 .
2017-05-09 09:24:00 -07:00

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To build Dart for Mac and Linux, we pull Fuchsia's buildtools, which is also used by Flutter. Fuchsia's buildtools includes gn, ninja, and the clang toolchain. Fuchsia buildtools vends clang-format as part of the clang toolchain. Since Fuchsia's buildtools doesn't vend a clang toolchain for Windows, we can't get a Windows clang-format binary from it. Therefore, from Chromium's buildtools here:

https://chromium.googlesource.com/chromium/buildtools

we copy the hash file for its Windows clang-format binary, and pull it down from google storage in the update.py script in this directory.

To update to a newer Windows clang-format binary, simply overwrite the hash in clang-format.exe.sha1 with a newer one, and then do a 'gclient sync'.