Update pigweed to latest version (#17247)

* Update pigweed to latest version

* Some updates to add ld unused section removal and disable rosetta downloads

* Move gc sections config into separate default config

* Restyle

build/config/compiler/BUILD.gn

@@ -150,6 +150,15 @@ config("abi_default") {
  ldflags = cflags
 }
 
+config("dead_code_elimination_default") {
+ # Delete unreferenced sections. Helpful with -ffunction-sections.
+ if (current_os == "mac" || current_os == "ios") {
+ ldflags = [ "-Wl,-dead_strip" ]
+ } else {
+ ldflags = [ "-Wl,--gc-sections" ]
+ }
+}
+
 config("target_default") {
  if (current_toolchain == default_toolchain) {
  defines = target_defines

build/config/defaults.gni

@@ -82,6 +82,10 @@ declare_args() {
  # Defaults target-specific configs.
  default_configs_target = [ "${build_root}/config/compiler:target_default" ]
 
+ # Default configs for dead code elimination.
+ default_configs_dead_code =
+ [ "${build_root}/config/compiler:dead_code_elimination_default" ]
+
  # Extra default configs.
  default_configs_extra = []
 }
@@ -105,6 +109,7 @@ default_configs += default_configs_aliasing
 default_configs += default_configs_sanitize
 default_configs += default_configs_fuzzing
 default_configs += default_configs_target
+default_configs += default_configs_dead_code
 default_configs += default_configs_extra
 
 executable_default_configs = []

scripts/bootstrap.sh

@@ -58,6 +58,11 @@ EOF
  PW_ROOT="$_CHIP_ROOT/third_party/pigweed/repo"
  export PW_ROOT
 
+ # Do not force use Rosetta in Pigweed because Matter is using host toolchain
+ if [ -z "$PW_BOOTSTRAP_USE_ROSETTA" ]; then
+ export PW_BOOTSTRAP_USE_ROSETTA=false
+ fi
+
  . "$_CHIP_ROOT/third_party/pigweed/repo/pw_env_setup/util.sh"
 
  _chip_bootstrap_banner() {