diff options
| -rw-r--r-- | rust/Makefile | 6 |
1 files changed, 5 insertions, 1 deletions
diff --git a/rust/Makefile b/rust/Makefile index 5e7612f69cea..a6e80caa42c1 100644 --- a/rust/Makefile +++ b/rust/Makefile @@ -264,7 +264,11 @@ else bindgen_c_flags_lto = $(bindgen_c_flags) endif -bindgen_c_flags_final = $(bindgen_c_flags_lto) -D__BINDGEN__ +# `-fno-builtin` is passed to avoid `bindgen` from using `clang` builtin +# prototypes for functions like `memcpy` -- if this flag is not passed, +# `bindgen`-generated prototypes use `c_ulong` or `c_uint` depending on +# architecture instead of generating `usize`. +bindgen_c_flags_final = $(bindgen_c_flags_lto) -fno-builtin -D__BINDGEN__ # Each `bindgen` release may upgrade the list of Rust target versions. By # default, the highest stable release in their list is used. Thus we need to set |