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rust: add --rust-target option for bindgen

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Without it, recent bindgen will give an error

   error: extern block cannot be declared unsafe

if rustc is not new enough to support the "unsafe extern" construct.

Cc: qemu-rust@nongnu.org
Cc: qemu-stable@nongnu.org
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Message-ID: <20250206111514.2134895-1-pbonzini@redhat.com>
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
(cherry picked from commit 131c58469f6fb68c89b38fee6aba8bbb20c7f4bf)
Signed-off-by: Michael Tokarev <mjt@tls.msk.ru>
This commit is contained in:
Paolo Bonzini 2025-02-06 12:15:13 +01:00 committed by Michael Tokarev
parent cac3fb4414
commit 237831f9ad
1 changed files with 3 additions and 0 deletions
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meson.build
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@ -4050,6 +4050,9 @@ if have_rust
bindgen_args += ['--formatter', 'none']
endif
endif
if bindgen.version().version_compare('>=0.66.0')
bindgen_args += ['--rust-target', '1.59']
endif
if bindgen.version().version_compare('<0.61.0')
# default in 0.61+
bindgen_args += ['--size_t-is-usize']