[PATCH v2 00/14] rust: allow older versions of rustc and bindgen

[Paolo Bonzini <pbonzini@redhat.com>]

This is the second of three series needed to enable Rust for all CI
jobs (the third is due to differences in the functionality between
C and Rust implementations of PL011, for which I have sent the RFC
a little earlier).

My overall patch queue can be found at branch rust-next of my git
repository https://gitlab.com/bonzini/qemu.git.

Note that this requires "meson subprojects update --reset" in order to do
an incremental build if you have already downloaded the Rust subprojects.
While I have a solution for that (modeled after scripts/git-submodule.sh),
I first need to check with the Meson folks whether my script is using only
stable interfaces.

Paolo

Based-on: <20241021163538.136941-1-pbonzini@redhat.com>

CI:
- Debian: https://gitlab.com/bonzini/qemu/-/jobs/8149518712
- Fedora: https://gitlab.com/bonzini/qemu/-/jobs/8149518714
- Fedora + nightly Rust: https://gitlab.com/bonzini/qemu/-/jobs/8149518716
- Ubuntu: https://gitlab.com/bonzini/qemu/-/jobs/8149518709


Junjie Mao (1):
  rust: introduce alternative implementation of offset_of!

Paolo Bonzini (13):
  rust: patch bilge-impl to allow compilation with 1.63.0
  rust: fix cfgs of proc-macro2 for 1.63.0
  rust: use std::os::raw instead of core::ffi
  rust: introduce a c_str macro
  rust: silence unknown warnings for the sake of old compilers
  rust: synchronize dependencies between subprojects and Cargo.lock
  rust: do not use MaybeUninit::zeroed()
  rust: clean up detection of the language
  rust: allow version 1.63.0 of rustc
  rust: do not use --generate-cstr
  rust: allow older version of bindgen
  rust: make rustfmt optional
  dockerfiles: install bindgen from cargo on Ubuntu 22.04

 docs/about/build-platforms.rst                |   8 +
 meson.build                                   | 102 +++++++----
 .gitattributes                                |   2 +
 .gitlab-ci.d/buildtest.yml                    |   2 +-
 meson_options.txt                             |   2 +
 rust/hw/char/pl011/Cargo.lock                 |   6 +-
 rust/hw/char/pl011/src/device.rs              |  28 +--
 rust/hw/char/pl011/src/device_class.rs        |   5 +-
 rust/hw/char/pl011/src/lib.rs                 |   4 +-
 rust/hw/char/pl011/src/memory_ops.rs          |  10 +-
 rust/qemu-api-macros/Cargo.lock               |  11 +-
 rust/qemu-api-macros/Cargo.toml               |   5 +-
 rust/qemu-api-macros/src/lib.rs               |  29 +++-
 rust/qemu-api/Cargo.lock                      |  56 +++++-
 rust/qemu-api/Cargo.toml                      |   7 +-
 rust/qemu-api/build.rs                        |   8 +
 rust/qemu-api/meson.build                     |  16 +-
 rust/qemu-api/src/c_str.rs                    |  53 ++++++
 rust/qemu-api/src/definitions.rs              |   2 +-
 rust/qemu-api/src/device_class.rs             |  26 ++-
 rust/qemu-api/src/lib.rs                      |  16 +-
 rust/qemu-api/src/offset_of.rs                | 161 ++++++++++++++++++
 rust/qemu-api/src/zeroable.rs                 |  91 ++++++++--
 rust/qemu-api/tests/tests.rs                  |  22 +--
 scripts/meson-buildoptions.sh                 |   4 +
 subprojects/bilge-impl-0.2-rs.wrap            |   1 +
 subprojects/packagefiles/.gitattributes       |   1 +
 .../packagefiles/bilge-impl-1.63.0.patch      |  45 +++++
 .../packagefiles/proc-macro2-1-rs/meson.build |   4 +-
 subprojects/packagefiles/syn-2-rs/meson.build |   1 +
 tests/docker/dockerfiles/ubuntu2204.docker    |   5 +
 tests/lcitool/mappings.yml                    |   4 +
 tests/lcitool/refresh                         |  11 +-
 33 files changed, 644 insertions(+), 104 deletions(-)
 create mode 100644 rust/qemu-api/src/c_str.rs
 create mode 100644 rust/qemu-api/src/offset_of.rs
 create mode 100644 subprojects/packagefiles/.gitattributes
 create mode 100644 subprojects/packagefiles/bilge-impl-1.63.0.patch

-- 
2.46.2