rust: work around `bindgen` 0.69.0 issue
`bindgen` 0.69.0 contains a bug: `--version` does not work without
providing a header [1]:
error: the following required arguments were not provided:
<HEADER>
Usage: bindgen <FLAGS> <OPTIONS> <HEADER> -- <CLANG_ARGS>...
Thus, in preparation for supporting several `bindgen` versions, work
around the issue by passing a dummy argument.
Include a comment so that we can remove the workaround in the future.
Link: https://github.com/rust-lang/rust-bindgen/pull/2678 [1]
Reviewed-by: Finn Behrens <me@kloenk.dev>
Tested-by: Benno Lossin <benno.lossin@proton.me>
Tested-by: Andreas Hindborg <a.hindborg@samsung.com>
Link: https://lore.kernel.org/r/20240709160615.998336-9-ojeda@kernel.org
Signed-off-by: Miguel Ojeda <ojeda@kernel.org>
diff --git a/init/Kconfig b/init/Kconfig
index febdea2..94e20d3 100644
--- a/init/Kconfig
+++ b/init/Kconfig
@@ -1928,7 +1928,10 @@
config BINDGEN_VERSION_TEXT
string
depends on RUST
- default $(shell,command -v $(BINDGEN) >/dev/null 2>&1 && $(BINDGEN) --version || echo n)
+ # The dummy parameter `workaround-for-0.69.0` is required to support 0.69.0
+ # (https://github.com/rust-lang/rust-bindgen/pull/2678). It can be removed when
+ # the minimum version is upgraded past that (0.69.1 already fixed the issue).
+ default $(shell,command -v $(BINDGEN) >/dev/null 2>&1 && $(BINDGEN) --version workaround-for-0.69.0 || echo n)
#
# Place an empty function call at each tracepoint site. Can be
