diff options
| -rw-r--r-- | rust/Makefile | 14 |
1 files changed, 14 insertions, 0 deletions
diff --git a/rust/Makefile b/rust/Makefile index 41ac8401a8be..aef85e9e8eeb 100644 --- a/rust/Makefile +++ b/rust/Makefile @@ -262,6 +262,20 @@ BINDGEN_TARGET := $(BINDGEN_TARGET_$(SRCARCH)) # some configurations, with new GCC versions, etc. bindgen_extra_c_flags = -w --target=$(BINDGEN_TARGET) +# Auto variable zero-initialization requires an additional special option with +# clang that is going to be removed sometime in the future (likely in +# clang-18), so make sure to pass this option only if clang supports it +# (libclang major version < 16). +# +# https://github.com/llvm/llvm-project/issues/44842 +# https://github.com/llvm/llvm-project/blob/llvmorg-16.0.0-rc2/clang/docs/ReleaseNotes.rst#deprecated-compiler-flags +ifdef CONFIG_INIT_STACK_ALL_ZERO +libclang_maj_ver=$(shell $(BINDGEN) $(srctree)/scripts/rust_is_available_bindgen_libclang.h 2>&1 | sed -ne 's/.*clang version \([0-9]*\).*/\1/p') +ifeq ($(shell expr $(libclang_maj_ver) \< 16), 1) +bindgen_extra_c_flags += -enable-trivial-auto-var-init-zero-knowing-it-will-be-removed-from-clang +endif +endif + bindgen_c_flags = $(filter-out $(bindgen_skip_c_flags), $(c_flags)) \ $(bindgen_extra_c_flags) endif |