65 lines
2.4 KiB
Python
65 lines
2.4 KiB
Python
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""" Helpers to download a recent clang release."""
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def _get_platform_folder(os_name):
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os_name = os_name.lower()
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if os_name.startswith("windows"):
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return "Win"
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if os_name.startswith("mac os"):
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return "Mac"
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if not os_name.startswith("linux"):
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fail("Unknown platform")
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return "Linux_x64"
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def _download_chromium_clang(
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repo_ctx,
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platform_folder,
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package_version,
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sha256,
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out_folder):
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cds_url = "https://commondatastorage.googleapis.com/chromium-browser-clang"
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cds_file = "clang-%s.tgz" % package_version
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cds_full_url = "{0}/{1}/{2}".format(cds_url, platform_folder, cds_file)
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repo_ctx.download_and_extract(cds_full_url, output = out_folder, sha256 = sha256)
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def download_clang(repo_ctx, out_folder):
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""" Download a fresh clang release and put it into out_folder.
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Clang itself will be located in 'out_folder/bin/clang'.
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We currently download one of the latest releases of clang by the
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Chromium project (see
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https://chromium.googlesource.com/chromium/src/+/master/docs/clang.md).
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Args:
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repo_ctx: An instance of repository_context object.
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out_folder: A folder to extract the compiler into.
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"""
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# TODO(ibiryukov): we currently download and extract some extra tools in the
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# clang release (e.g., sanitizers). We should probably remove the ones
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# we don't need and document the ones we want provide in addition to clang.
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# Latest CLANG_REVISION and CLANG_SUB_REVISION of the Chromiums's release
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# can be found in https://chromium.googlesource.com/chromium/src/tools/clang/+/master/scripts/update.py
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CLANG_REVISION = "b4160cb94c54f0b31d0ce14694950dac7b6cd83f"
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CLANG_SVN_REVISION = "371856"
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CLANG_SUB_REVISION = 1
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package_version = "%s-%s-%s" % (
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CLANG_SVN_REVISION,
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CLANG_REVISION[:8],
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CLANG_SUB_REVISION,
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)
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checksums = {
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"Linux_x64": "919c19df3ebd7db03b72575b2de5198404357659fc8c85c2d66e679ad4acbafe",
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"Mac": "5632c516f3ac5fab3654d0a874688cad6c7f99b96845da27ab12336a14187aa2",
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"Win": "235545b33f4d697190032cb538fdcaba227017c95b752ea8af8f29aab8da7479",
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}
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platform_folder = _get_platform_folder(repo_ctx.os.name)
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_download_chromium_clang(
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repo_ctx,
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platform_folder,
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package_version,
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checksums[platform_folder],
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out_folder,
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)
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