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Add a clippy-json target to the ninja script.
This is useful for rust-analyzer, which requires an "external check
command" to function when not using cargo.
Also we add a "clippy-json-prereq" target, and invoke it in the
clippy.py script. The prereq target tries to build as much of the
project as possible with "-k0".
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Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
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Meson builds libraries before running clippy, thus all dependencies must be present
and clippy is run only for the warnings (instead, Cargo treats clippy as a separate
toolchain and builds everything). In Meson's case thus it is pointless to run
clippy whenever --cap-lints allow is included in the command line.
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
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Similar to the "ninja scan-build" target for C, add a clippy internal
tool that runs clippy-driver on all crates in the project.
The approach used is more efficient than with "ninja scan-build", and
does not require rerunning Meson in a separate build directory; it
uses the introspection data to find the compiler arguments for the
target and invokes clippy-driver with a slightly modified command
line.
This could actually be applied to scan-build as well, reusing the
run_tool_on_targets() function.
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
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