Andrea Righi 344b6c0a75 rust: fix bindgen build error with fstrict-flex-arrays ... Commit df8fc4e934 ("kbuild: Enable -fstrict-flex-arrays=3") enabled '-fstrict-flex-arrays=3' globally, but bindgen does not recognized this compiler option, triggering the following build error: error: unknown argument: '-fstrict-flex-arrays=3', err: true [ Miguel: Commit df8fc4e934 ("kbuild: Enable -fstrict-flex-arrays=3") did it so only conditionally (i.e. only if the C compiler supports it). This explains what Andrea was seeing: he was compiling with a modern enough GCC, which enables the option, but with an old enough Clang. Andrea confirmed this was the case: he was using Clang 14 with GCC 13; and that Clang 15 worked for him. While it is possible to construct code (see mailing list for an example I came up with) where this could break, it is fairly contrived, and anyway GCC-built kernels with Rust enabled should only be used for experimentation until we get support for `rustc_codegen_gcc` and/or GCC Rust. So let's add this for the time being in case it helps somebody. ] Add '-fstrict-flex-arrays' to the list of cflags that should be ignored by bindgen. Fixes: df8fc4e934 ("kbuild: Enable -fstrict-flex-arrays=3") Signed-off-by: Andrea Righi <andrea.righi@canonical.com> Tested-by: Gary Guo <gary@garyguo.net> Link: https://lore.kernel.org/r/20230815065346.131387-1-andrea.righi@canonical.com Signed-off-by: Miguel Ojeda <ojeda@kernel.org>		2023-10-12 22:58:52 +02:00
..
alloc	rust: upgrade to Rust 1.71.1	2023-08-14 17:50:02 +02:00
bindings	linux-kselftest-kunit-6.6-rc1	2023-08-28 18:56:38 -07:00
kernel	rust: error: Markdown style nit	2023-10-12 22:58:52 +02:00
macros	Rust changes for v6.6	2023-08-29 08:19:46 -07:00
uapi	rust: upgrade to Rust 1.68.2	2023-05-31 17:35:03 +02:00
.gitignore	rust: support running Rust documentation tests as KUnit ones	2023-07-19 09:32:53 -06:00
bindgen_parameters	rust: bindgen: Add alt_instr as opaque type	2023-03-02 22:44:15 +01:00
build_error.rs	rust: add build_error crate	2022-12-04 01:59:16 +01:00
compiler_builtins.rs	rust: upgrade to Rust 1.71.1	2023-08-14 17:50:02 +02:00
exports.c	rust: add build_error crate	2022-12-04 01:59:16 +01:00
helpers.c	Rust changes for v6.6	2023-08-29 08:19:46 -07:00
Makefile	rust: fix bindgen build error with fstrict-flex-arrays	2023-10-12 22:58:52 +02:00