[roll third_party/pigweed] pw_toolchain: Allow user-provided clang toolchain

Allows a user to specify the root directory of the llvm tools to use
when compiling with clang. This makes it easier to debug
compiler-related issues.

Original-Bug: 321
Original-Reviewed-on: https://pigweed-review.googlesource.com/c/pigweed/pigweed/+/42932

third_party/pigweed Rolled-Commits: 32829d3a8abbc08..9a53d6c97f65375
Roller-URL: https://ci.chromium.org/b/8848119488242170512
Cq-Cl-Tag: roller-builder:pigweed-experimental-roller
Cq-Cl-Tag: roller-bid:8848119488242170512
CQ-Do-Not-Cancel-Tryjobs: true
Change-Id: Id6a180de561b60c597453923402635c0898599c3
Reviewed-on: https://pigweed-review.googlesource.com/c/pigweed/experimental/+/43702
Reviewed-by: 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: 16ef9baaf586acc10166ad2df632ae2e7713e846
  1. applications/
  2. build_overrides/
  3. pw_board_led/
  4. pw_board_led_arduino/
  5. pw_board_led_host/
  6. pw_board_led_stm32cubef4/
  7. pw_board_led_stm32f429i_disc1/
  8. pw_spin_delay/
  9. pw_spin_delay_arduino/
  10. pw_spin_delay_host/
  11. pw_spin_delay_stm32cubef4/
  12. pw_spin_delay_stm32f429i_disc1/
  13. pw_sys_io_stm32cubef4/
  14. targets/
  15. third_party/
  16. tools/
  17. .gitattributes
  18. .gitignore
  19. .gitmodules
  20. .gn
  21. activate.bat
  22. banner.txt
  23. bootstrap.bat
  24. bootstrap.sh
  25. BUILD.gn
  26. BUILDCONFIG.gn
  27. env_setup.json
  28. navbar.md
  29. PW_PLUGINS
  30. README.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.