[roll third_party/pigweed] pw_toolchain/cmake: Update GCC & Clang toolchain backends

Extends the backend selection for the GCC and Clang CMake
toolchains to get closer to GN parity.

Original-Reviewed-on: https://pigweed-review.googlesource.com/c/pigweed/pigweed/+/79964

https://pigweed.googlesource.com/pigweed/pigweed
third_party/pigweed Rolled-Commits: 2d7958dc6e68cab..4aa99d0ae3c517e
Roller-URL: https://ci.chromium.org/b/8824391340676580273
Cq-Cl-Tag: roller-builder:pigweed-experimental-roller
Cq-Cl-Tag: roller-bid:8824391340676580273
CQ-Do-Not-Cancel-Tryjobs: true
Change-Id: I885bb41f6a40d6422c168f6ee254ce98420a9f0b
Reviewed-on: https://pigweed-review.googlesource.com/c/pigweed/experimental/+/80830
Bot-Commit: Pigweed Integration Roller <pigweed-integration-roller@pigweed.google.com.iam.gserviceaccount.com>
Commit-Queue: Pigweed Integration Roller <pigweed-integration-roller@pigweed.google.com.iam.gserviceaccount.com>
1 file changed
tree: c1350a5e2726ef788efa516e76588ab5b2dc5cc7
  1. applications/
  2. build_overrides/
  3. infra/
  4. pw_board_led/
  5. pw_board_led_arduino/
  6. pw_board_led_host/
  7. pw_board_led_stm32cube/
  8. pw_board_led_stm32f429i_disc1/
  9. pw_spin_delay/
  10. pw_spin_delay_arduino/
  11. pw_spin_delay_host/
  12. pw_spin_delay_stm32cube/
  13. pw_spin_delay_stm32f429i_disc1/
  14. targets/
  15. third_party/
  16. tools/
  17. .gitattributes
  18. .gitignore
  19. .gitmodules
  20. .gn
  21. BUILD.gn
  22. BUILDCONFIG.gn
  23. OWNERS
  24. PW_PLUGINS
  25. README.md
  26. activate.bat
  27. banner.txt
  28. bootstrap.bat
  29. bootstrap.sh
  30. env_setup.json
  31. navbar.md
README.md

Pigweed Experimental

This repository contains experimental pigweed modules.

Repository setup

Clone this repo with --recursive to get all required submodules.

git clone --recursive https://pigweed.googlesource.com/pigweed/experimental

This will pull the Pigweed source repository into third_party/pigweed. If you already cloned but forgot to --recursive run git submodule update --init to pull all submodules.