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Since "qemu_api" is no longer the unique crate to provide APIs.
Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Link: https://lore.kernel.org/r/20250827104147.717203-17-marcandre.lureau@redhat.com
Reviewed-by: Zhao Liu <zhao1.liu@intel.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
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Add unit tests to check Derive macro output for expected error messages,
or for expected correct codegen output.
Signed-off-by: Manos Pitsidianakis <manos.pitsidianakis@linaro.org>
Reviewed-by: Zhao Liu <zhao1.liu@intel.com>
Link: https://lore.kernel.org/r/20250704-rust_add_derive_macro_unit_tests-v1-2-ebd47fa7f78f@linaro.org
[Remove usage of MacroError. - Paolo]
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
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Crates like "bilge" and "libc" can be shared by more than one directory,
so declare them directly in rust/meson.build. While at it, make their
variable names end with "_rs" and always add a subproject() statement
(as that pinpoints the error better if the subproject is missing and
cannot be downloaded).
Reviewed-by: Zhao Liu <zhao1.liu@intel.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
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Avoid looking for Rust dependencies via cmake.
Reviewed-by: Junjie Mao <junjie.mao@hotmail.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
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Tested-by: Manos Pitsidianakis <manos.pitsidianakis@linaro.org>
Reviewed-by: Manos Pitsidianakis <manos.pitsidianakis@linaro.org>
Reviewed-by: Zhao Liu <zhao1.liu@intel.com>
Reviewed-by: Kevin Wolf <kwolf@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
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A working native Rust compiler is always needed in order to compile Rust
code, even when cross compiling, in order to build the procedural macros
that QEMU uses.
Right now, the check is done in rust/qemu-api-macros/meson.build, but this
has two disadvantages. First, it makes the build fail when the Meson "rust"
option is set to "auto" (instead, Rust support should be disabled). Second,
add_languages() is one of the few functions that are executed even by
"meson introspect", except that "meson introspect" executes both branches
of "if" statements! Therefore, "meson introspect" tries to look for a
Rust compiler even if the option is disabled---and then fails because
the compiler is required by rust/qemu-api-macros/meson.build. This is
visible for example if the compilation host has a stale
scripts/meson-buildoptions.sh and no rustc installed.
Both issues can be fixed by moving the check to the main meson.build,
together with the check for the cross compiler.
Reported-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
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This commit adds a helper crate library, qemu-api-macros for derive (and
other procedural) macros to be used along qemu-api.
It needs to be a separate library because in Rust, procedural macros, or
macros that can generate arbitrary code, need to be special separate
compilation units.
Only one macro is introduced in this patch, #[derive(Object)]. It
generates a constructor to register a QOM TypeInfo on init and it must
be used on types that implement qemu_api::definitions::ObjectImpl trait.
Reviewed-by: Junjie Mao <junjie.mao@hotmail.com>
Signed-off-by: Manos Pitsidianakis <manos.pitsidianakis@linaro.org>
Link: https://lore.kernel.org/r/dd645642406a6dc2060c6f3f17db2bc77ed67b59.1727961605.git.manos.pitsidianakis@linaro.org
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
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