Re: [RFC PATCH 00/11] rust: improved integration with cargo

["Alex Bennée" <alex.bennee@linaro.org>]

Paolo Bonzini <pbonzini@redhat.com> writes:

> On Thu, Nov 14, 2024 at 2:07 PM Alex Bennée <alex.bennee@linaro.org> wrote:
>> > First, while it is currently possible to run cargo on the rust/ directory,
>> > it has the issue that the bindings.rs must be placed by hand in
>> > the build directory.  Therefore, this series starts by allowing
>> > cargo to "just work" when run in a "meson devenv" environment:
>> >
>> >     meson devenv -w ../rust cargo clippy --tests
>> >     meson devenv -w ../rust cargo fmt
>>
>> Is this meant to be the rust source root, or the root of the rust
>> builddir:
>>
>> $ meson devenv ../../rust
>
> rust/ in the source directory.  You also need to run "meson devenv"
> from the root of the build directory.
>
> In practice you can just use "make clippy" or similar.

make clippy certainly works

>> ERROR: Build data file './meson-private/build.dat' references
>> functions or classes that don't exist. This probably means that it
>> was generated with an old version of meson. Try running from the
>> source directory meson setup . --wipe
>> 🕙13:05:22 alex@draig:qemu.git/builds/rust  on  review/rust-cargo-rfc [$!?] [🔴 ERROR]
>> $ meson devenv rust
>
> Your meson-private/ directory is stale.  Any "make" or "ninja" invocation will
> fix it.

✗  make -j30
[1/53] Generating tests/include/QAPI test (include) with a custom command
[2/21] Generating rust_arm_softmmu.rs with a custom command (wrapped by meson to capture output)
[3/21] Generating rust_aarch64_softmmu.rs with a custom command (wrapped by meson to capture output)
[4/21] Generating qemu-version.h with a custom command (wrapped by meson to capture output)
🕙15:18:58 alex@draig:qemu.git/builds/rust  on  review/rust-cargo-rfc [$!?] 
➜  meson devenv ../../rust

ERROR: Build data file './meson-private/build.dat' references functions or classes that don't exist. This probably means that it was generated with an old version of meson. Try running from the source directory meson setup . --wipe

I also tried a wipe and re-configure but the same thing.

➜  ls -la meson-private/
total 24768
drwxr-xr-x  4 alex alex     4096 Nov 14 15:20 ./
drwxr-xr-x 77 alex alex     4096 Nov 14 15:21 ../
-rw-r--r--  1 alex alex     7569 Nov 14 15:20 aarch64-softmmu-config-devices.mak.d
-rw-r--r--  1 alex alex     7084 Nov 14 15:20 arm-softmmu-config-devices.mak.d
-rw-r--r--  1 alex alex  1877658 Nov 14 15:20 build.dat
-rw-r--r--  1 alex alex    27208 Nov 14 15:20 cleantrees.dat
drwxr-xr-x  3 alex alex     4096 Nov 14 15:20 __CMake_compiler_info__/
drwxr-xr-x  3 alex alex     4096 Nov 14 15:20 cmake_libcbor/
-rw-r--r--  1 alex alex      162 Nov 14 15:20 cmd_line.txt
-rw-r--r--  1 alex alex   333651 Nov 14 15:20 coredata.dat
-rw-r--r--  1 alex alex    24920 Nov 14 15:20 install.dat
-rw-r--r--  1 alex alex 19049522 Nov 14 15:20 libsanity.a
-rw-r--r--  1 alex alex     1748 Nov 14 15:20 meson_benchmark_setup.dat
-rw-r--r--  1 alex alex        0 Nov 14 15:20 meson.lock
-rw-r--r--  1 alex alex   140166 Nov 14 15:20 meson_test_setup.dat
-rwxr-xr-x  1 alex alex  3826912 Nov 14 15:20 rusttest*
-rw-r--r--  1 alex alex       46 Nov 14 15:20 sanitycheckc.c
-rwxr-xr-x  1 alex alex    15840 Nov 14 15:20 sanitycheckc.exe*
-rw-r--r--  1 alex alex       30 Nov 14 15:20 sanity.rs
🕙15:21:27 alex@draig:qemu.git/builds/rust  on  review/rust-cargo-rfc [$!?] 
➜  meson devenv ../../rust

ERROR: Build data file './meson-private/build.dat' references functions or classes that don't exist. This probably means that it was generated with an old version of meson. Try running from the source directory meson setup . --wipe
🕙15:21:43 alex@draig:qemu.git/builds/rust  on  review/rust-cargo-rfc [$!?] [🔴 ERROR] 
✗  

>
> Paolo

-- 
Alex Bennée
Virtualisation Tech Lead @ Linaro