Files
codex/patches/rules_rust_windows_gnullvm_build_script.patch
2026-03-27 19:34:32 -07:00

39 lines
1.6 KiB
Diff

diff --git a/cargo/private/cargo_build_script.bzl b/cargo/private/cargo_build_script.bzl
--- a/cargo/private/cargo_build_script.bzl
+++ b/cargo/private/cargo_build_script.bzl
@@ -120,6 +120,25 @@
executable = True,
)
+def _strip_stack_protector_for_windows_llvm_mingw(toolchain, args):
+ """Drop stack protector flags unsupported by llvm-mingw build-script probes."""
+ if "windows-gnullvm" not in toolchain.target_flag_value:
+ return args
+
+ uses_llvm_mingw = False
+ for arg in args:
+ if "mingw-w64-" in arg:
+ uses_llvm_mingw = True
+ break
+
+ if not uses_llvm_mingw:
+ return args
+
+ # llvm-mingw does not ship libssp_nonshared, so forwarding stack-protector
+ # flags through CFLAGS/CXXFLAGS breaks build.rs probe binaries compiled via
+ # cc-rs.
+ return [arg for arg in args if not arg.startswith("-fstack-protector")]
+
def get_cc_compile_args_and_env(cc_toolchain, feature_configuration):
"""Gather cc environment variables from the given `cc_toolchain`
@@ -503,6 +522,8 @@
if not env["AR"]:
env["AR"] = cc_toolchain.ar_executable
+ cc_c_args = _strip_stack_protector_for_windows_llvm_mingw(toolchain, cc_c_args)
+ cc_cxx_args = _strip_stack_protector_for_windows_llvm_mingw(toolchain, cc_cxx_args)
# Populate CFLAGS and CXXFLAGS that cc-rs relies on when building from source, in particular
# to determine the deployment target when building for apple platforms (`macosx-version-min`
# for example, itself derived from the `macos_minimum_os` Bazel argument).