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rust: work around bindgen 0.69.0 issue

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`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>
This commit is contained in:
Miguel Ojeda 2024-07-09 18:06:03 +02:00
parent d49082faf6
commit 9e98db1783
2 changed files with 9 additions and 2 deletions
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5
init/Kconfig
View File

@ -1928,7 +1928,10 @@ config RUSTC_VERSION_TEXT
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

6
scripts/rust_is_available.sh
View File

@ -121,8 +121,12 @@ fi
# Check that the Rust bindings generator is suitable.
#
# Non-stable and distributions' versions may have a version suffix, e.g. `-dev`.
#
# 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).
rust_bindings_generator_output=$( \
LC_ALL=C "$BINDGEN" --version 2>/dev/null
LC_ALL=C "$BINDGEN" --version workaround-for-0.69.0 2>/dev/null
) || rust_bindings_generator_code=$?
if [ -n "$rust_bindings_generator_code" ]; then
echo >&2 "***"