
And remove some whitespace while we're here. TBR=thakis Bug: none Change-Id: Iadaaa0606a1f3916c4b3ce354c87b20d1c3318ff Reviewed-on: https://chromium-review.googlesource.com/711316 Reviewed-by: Hans Wennborg <hans@chromium.org> Reviewed-by: Nico Weber <thakis@chromium.org> Commit-Queue: Hans Wennborg <hans@chromium.org> Cr-Commit-Position: refs/heads/master@{#507873}
46 lines
2.2 KiB
Markdown
46 lines
2.2 KiB
Markdown
# Updating clang
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1. Sync your Chromium tree to the latest revision to pick up any plugin
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changes
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1. Run `python tools/clang/scripts/upload_revision.py NNNN`
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with the target LLVM SVN revision number. This creates a roll CL on a new
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branch, uploads it and starts tryjobs that build the compiler binaries into
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a staging bucket on Google Cloud Storage (GCS).
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1. If the clang upload try bots succeed, copy the binaries from the staging
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bucket to the production one. For example:
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```shell
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$ export rev=123456-1
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$ for x in Linux_x64 Mac Win ; do \
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gsutil.py cp -n -a public-read gs://chromium-browser-clang-staging/$x/clang-$rev.tgz \
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gs://chromium-browser-clang/$x/clang-$rev.tgz ; \
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gsutil.py cp -n -a public-read gs://chromium-browser-clang-staging/$x/llvmobjdump-$rev.tgz \
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gs://chromium-browser-clang/$x/llvmobjdump-$rev.tgz ; \
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gsutil.py cp -n -a public-read gs://chromium-browser-clang-staging/$x/translation_unit-$rev.tgz \
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gs://chromium-browser-clang/$x/translation_unit-$rev.tgz ; \
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gsutil.py cp -n -a public-read gs://chromium-browser-clang-staging/$x/llvm-code-coverage-$rev.tgz \
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gs://chromium-browser-clang/$x/llvm-code-coverage-$rev.tgz ; \
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done
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$ gsutil.py cp -n -a public-read gs://chromium-browser-clang-staging/Mac/lld-$rev.tgz \
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gs://chromium-browser-clang/Mac/lld-$rev.tgz
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```
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1. Run the goma package update script to push these packages to goma. If you do
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not have the necessary credentials to do the upload, ask clang@chromium.org
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to find someone who does
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1. Run an exhaustive set of try jobs to test the new compiler:
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```shell
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git cl try && \
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git cl try -m tryserver.chromium.mac -b mac_chromium_asan_rel_ng \
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-b ios-device && \
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git cl try -m tryserver.chromium.linux -b linux_chromium_chromeos_dbg_ng \
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-b linux_chromium_chromeos_asan_rel_ng -b linux_chromium_msan_rel_ng \
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-b fuchsia -b linux_chromium_cfi_rel_ng &&
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git cl try -m tryserver.blink -b linux_trusty_blink_rel
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```
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1. Commit roll CL from the first step
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1. The bots will now pull the prebuilt binary, and goma will have a matching
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binary, too.
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