Reland "[bazel] Fix golang cross-compilation on RBE"
This is a reland of commit b2109e6bbbe793533bc8745528fc510dd9bda7d2
See cr/488438081
Original change's description:
> [bazel] Fix golang cross-compilation on RBE
>
> Without this change, one could not have a Mac Bazel host
> and use our Linux executor to build for a Mac target.
> What I observed was the host uploading the Mac go toolchain
> to the Linux RBE instance and that not working.
>
> To fix this, we explicitly download a Linux golang toolchain
> as well as one for the host machine. This is straightforward
> after the fact (See WORKSPACE.bazel) but took a bit of
> experimentation and doc reading to get right.
>
> To *use* the right toolchain, one must tell the Linux
> RBE instance the target platform should be the same as
> the host platform. This is a smidge tricky to do correctly
> in a script (e.g. a Makefile), so I also added a short
> Bazel (read: Python) script to call `go version` and parse
> the output into a Bazel-ready os_arch string.
>
> Change-Id: If009316209c46efa912f39f0f55bd7d6734d27c5
> Reviewed-on: https://skia-review.googlesource.com/c/skia/+/604061
> Reviewed-by: Leandro Lovisolo <lovisolo@google.com>
Change-Id: I8bbeee8bbf6109810915125d581548ebc36acff0
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/605077
Reviewed-by: Leandro Lovisolo <lovisolo@google.com>
4 files changed