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459420c33a
The `clang:ast` and `clang:builtin_headers_gen` targets currently use hardcoded `external/llvm-project` paths to access generated headers. With bzlmod this path becomes dependent on the module name, module version and module extension, so we need a more dynamic approach. Does not affect the WORKSPACE build. Reviewed By: GMNGeoffrey, #bazel_build Differential Revision: https://reviews.llvm.org/D137007
18 lines
520 B
Python
18 lines
520 B
Python
def _workspace_root_impl(ctx):
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"""Dynamically determine the workspace root from the current context.
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The path is made available as a `WORKSPACE_ROOT` environmment variable and
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may for instance be consumed in the `toolchains` attributes for `cc_library`
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and `genrule` targets.
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"""
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return [
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platform_common.TemplateVariableInfo({
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"WORKSPACE_ROOT": ctx.label.workspace_root,
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}),
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]
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workspace_root = rule(
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implementation = _workspace_root_impl,
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attrs = {},
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)
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