diff options
| -rw-r--r-- | docs/about/build-platforms.rst | 12 | ||||
| -rw-r--r-- | meson.build | 31 |
2 files changed, 39 insertions, 4 deletions
diff --git a/docs/about/build-platforms.rst b/docs/about/build-platforms.rst index b779eb5493..6102f00aec 100644 --- a/docs/about/build-platforms.rst +++ b/docs/about/build-platforms.rst @@ -107,6 +107,18 @@ Python build dependencies required, it may be necessary to fetch python modules from the Python Package Index (PyPI) via ``pip``, in order to build QEMU. +Rust build dependencies + QEMU is generally conservative in adding new Rust dependencies, and all + of them are included in the distributed tarballs. One exception is the + bindgen tool, which is too big to package and distribute. The minimum + supported version of bindgen is 0.60.x. For distributions that do not + include bindgen or have an older version, it is recommended to install + a newer version using ``cargo install bindgen-cli``. + + Developers may want to use Cargo-based tools in the QEMU source tree; + this requires Cargo 1.74.0. Note that Cargo is not required in order + to build QEMU. + Optional build dependencies Build components whose absence does not affect the ability to build QEMU may not be available in distros, or may be too old for QEMU's diff --git a/meson.build b/meson.build index 5b85d4275b..11958c67b5 100644 --- a/meson.build +++ b/meson.build @@ -100,6 +100,23 @@ if have_rust endif endif +if have_rust + bindgen = find_program('bindgen', required: get_option('rust')) + if not bindgen.found() or bindgen.version().version_compare('<0.60.0') + if get_option('rust').enabled() + error('bindgen version ' + bindgen.version() + ' is unsupported. You can install a new version with "cargo install bindgen-cli"') + else + if bindgen.found() + warning('bindgen version ' + bindgen.version() + ' is unsupported, disabling Rust compilation.') + else + warning('bindgen not found, disabling Rust compilation.') + endif + message('To use Rust you can install a new version with "cargo install bindgen-cli"') + have_rust = false + endif + endif +endif + dtrace = not_found stap = not_found if 'dtrace' in get_option('trace_backends') @@ -3963,15 +3980,13 @@ common_all = static_library('common', if have_rust # We would like to use --generate-cstr, but it is only available # starting with bindgen 0.66.0. The oldest supported versions - # are in Ubuntu 22.04 (0.59.1) and Debian 12 (0.60.1). + # is 0.60.x (Debian 12 has 0.60.1) which introduces --allowlist-file. bindgen_args = [ '--disable-header-comment', '--raw-line', '// @generated', '--ctypes-prefix', 'std::os::raw', - '--formatter', 'rustfmt', '--generate-block', '--impl-debug', - '--merge-extern-blocks', '--no-doc-comments', '--with-derive-default', '--no-layout-tests', @@ -3980,6 +3995,12 @@ if have_rust '--allowlist-file', meson.project_source_root() + '/.*', '--allowlist-file', meson.project_build_root() + '/.*' ] + if bindgen.version().version_compare('<0.61.0') + # default in 0.61+ + bindgen_args += ['--size_t-is-usize'] + else + bindgen_args += ['--merge-extern-blocks'] + endif c_enums = [ 'DeviceCategory', 'GpioPolarity', @@ -4015,7 +4036,7 @@ if have_rust dependencies: common_ss.all_dependencies(), output: 'bindings.rs', include_directories: include_directories('.', 'include'), - bindgen_version: ['>=0.69.4'], + bindgen_version: ['>=0.60.0'], args: bindgen_args, ) subdir('rust') @@ -4481,6 +4502,8 @@ if have_rust summary_info += {'Rust target': config_host['RUST_TARGET_TRIPLE']} summary_info += {'rustc': ' '.join(rustc.cmd_array())} summary_info += {'rustc version': rustc.version()} + summary_info += {'bindgen': bindgen.full_path()} + summary_info += {'bindgen version': bindgen.version()} endif option_cflags = (get_option('debug') ? ['-g'] : []) if get_option('optimization') != 'plain' |