tree ce38203e07c2886261e9bb7d103fdd180dc9592e
parent 4be2d1c6b442ae649cc5034ca9493dd0774a7bbc
author Jiacheng Lu <lujc@pigweed.infra.roller.google.com> 1722483624 +0000
committer CQ Bot Account <pigweed-scoped@luci-project-accounts.iam.gserviceaccount.com> 1722483624 +0000

roll: pigweed, pw_toolchain: pw_toolchain: Rustc cross compile to qemu-clang

Original-Bug: 343111481

Support rustc GN toolchain cross compile to cortex-m3 targets. Cross
compiling requires specifying target triple and target specific linker
flags. Both triple and linker flags are propagated using rustflags
defined in config.

Adding more supported targets requires walking through related config
declaration in pigweed codebase which defines linker flags and target
triple, and populating corresponding rustflags.

This change has been validated by building and running
pw_rust/examples/basic_executable:hello on lm3s6965evb_qemu target.

Original-Reviewed-on: https://pigweed-review.googlesource.com/c/pigweed/pigweed/+/211994
Lint: Lint 🤖 <android-build-ayeaye@system.gserviceaccount.com>

https://pigweed.googlesource.com/pigweed/pigweed
pigweed, pw_toolchain Rolled-Commits: 2bccf25ed3d181d..ddcc251bcac0c2c
Roller-URL: https://ci.chromium.org/b/8740838818238157361
GitWatcher: ignore
CQ-Do-Not-Cancel-Tryjobs: true
Change-Id: I4dc6bfebb1fd3b66a481b9d2136c8125744350de
Reviewed-on: https://pigweed-review.googlesource.com/c/pigweed/quickstart/bazel/+/226905
Bot-Commit: Pigweed Roller <pigweed-roller@pigweed-service-accounts.iam.gserviceaccount.com>
Lint: Lint 🤖 <android-build-ayeaye@system.gserviceaccount.com>
Commit-Queue: Pigweed Roller <pigweed-roller@pigweed-service-accounts.iam.gserviceaccount.com>