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https://github.com/carbon-language/carbon-lang.git
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Chandler CarruthandDana Jansens
5d41529590
This shifts the Bazel toolchain configuration of our installation to build all of the Clang runtimes Carbon uses on-demand natively in Bazel. We export the information about how to build into a generated Starlark file, and emit BUILD files and Starlark logic into the installation to orchestrate the build. This requires some complex management of Bazel toolchains -- we need to first set-up a "runtimes toolchain" that doesn't have runtimes of its own, but can be used to _build_ runtimes. Then we build the runtimes using that toolchain, and assemble them into the standard layout for a Carbon runtimes tree. Finally we configure the _actual_ toolchain with this built tree. Currently, this is only setup for the installed toolchain, but I plan to factor this runtimes build into one that can be used directly as well to break up the monolithic runtimes build step into Bazel-integrated build of the runtimes. This will also serve as the foundation for adding bootstrapping support directly to our Bazel build. --------- Co-authored-by: Dana Jansens <danakj@orodu.net>
26 lines
879 B
Python
26 lines
879 B
Python
# Part of the Carbon Language project, under the Apache License v2.0 with LLVM
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# Exceptions. See /LICENSE for license information.
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# SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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"""Workaround for lack of easy way to add private includes.
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This is a workaround for the following Bazel issue:
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https://github.com/bazelbuild/bazel/issues/2670
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"""
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def make_include_copts(include_dirs):
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"""Create `copts` to search the provided directories for includes."""
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copts = []
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prefix = ""
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repo_name = native.repository_name()
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if repo_name != "@":
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prefix = "external/{}/".format(repo_name[1:])
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package_name = native.package_name()
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for include_dir in include_dirs:
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copts.append("-I{}{}/{}".format(prefix, package_name, include_dir))
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copts.append("-I$(GENDIR)/{}{}/{}".format(prefix, package_name, include_dir))
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return copts
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