pw_toolchain: Support replacing GNU libs for ARM

Toolchain BareMetal Driver behavior had changed. Explicitly pass the `-unwindlib=none` flag to avoid `-lunwind` from being set by the Driver. Bug: b/322360978 Change-Id: I5e3de39952098b28f618a63f51b6a555e8e545e9 Reviewed-on: https://pigweed-review.googlesource.com/c/pigweed/pigweed/+/256012 Docs-Not-Needed: Prabhu Karthikeyan Rajasekaran <[email protected]> Reviewed-by: Leonard Chan <[email protected]> Lint: Lint 🤖 <[email protected]> Presubmit-Verified: CQ Bot Account <[email protected]> Commit-Queue: Prabhu Karthikeyan Rajasekaran <[email protected]>
google · Dec 26, 2024 · 6492053 · 6492053
1 parent 46f4dc7
commit 6492053
Showing 1 changed file with 1 addition and 0 deletions.
diff --git a/pw_toolchain/arm_clang/BUILD.gn b/pw_toolchain/arm_clang/BUILD.gn
@@ -57,6 +57,7 @@ if (pw_toolchain_USE_LLVM_PREBUILT_LIBRARIES) {
   cortex_m_common_link_flags = [
     "-nostartfiles",
     "-nostdlib++",
+    "-unwindlib=none",
   ]
   cortex_m_common_defines = [
     # This macro is used by libc++ headers and normally would expand to std::_libcpp_verbose_abort,