carbon-lang

carbon-language/carbon-lang

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Chandler CarruthandDana Jansens 5d41529590 Introduce a Bazel-integrated build for the installed runtimes (#6872 )

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.

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Co-authored-by: Dana Jansens <danakj@orodu.net>

2026-03-12 01:24:56 +00:00

carbon_rules

Switch install to be based on the busybox root (#6579 )

2026-01-13 03:16:38 +00:00

cc_rules

Add cc rule wrappers for cc_env (#5277 )

2025-04-11 19:58:54 +00:00

cc_toolchains

Make the Carbon toolchain a viable Bazel module exposing cc_toolchains (#6652 )

2026-01-28 02:45:19 +00:00

check_deps

Update LLVM to a recent commit (#6599 )