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meson/docs/markdown/Rust-module.md

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modules: Add an unstable-rust module Like other language specific modules this module is module for holding rust specific helpers. This commit adds a test() function, which simplifies using rust's internal unittest mechanism. Rust tests are generally placed in the same code files as they are testing, in contrast to languages like C/C++ and python which generally place the tests in separate translation units. For meson this is somewhat problematic from a repetition point of view, as the only changes are generally adding --test, and possibly some dependencies. The rustmod.test() method provides a mechanism to remove the repatition: it takes a rust target, copies it, and then addes the `--test` option, then creates a Test() target with the `rust` protocol. You can pass additional dependencies via the `dependencies` keyword. This all makes for a nice, DRY, test definition.
4 years ago
---
short-description: Rust language integration module
authors:
- name: Dylan Baker
email: dylan@pnwbakers.com
modules/rust: Add support for string include_directories Which we support for basically every other case, but not this one.
2 years ago
years: [2020, 2021, 2022]
modules: Add an unstable-rust module Like other language specific modules this module is module for holding rust specific helpers. This commit adds a test() function, which simplifies using rust's internal unittest mechanism. Rust tests are generally placed in the same code files as they are testing, in contrast to languages like C/C++ and python which generally place the tests in separate translation units. For meson this is somewhat problematic from a repetition point of view, as the only changes are generally adding --test, and possibly some dependencies. The rustmod.test() method provides a mechanism to remove the repatition: it takes a rust target, copies it, and then addes the `--test` option, then creates a Test() target with the `rust` protocol. You can pass additional dependencies via the `dependencies` keyword. This all makes for a nice, DRY, test definition.
4 years ago
...
modules/rust: stabilize Mesa is using the rust module in production, so we should stabilize it.
2 years ago
# Rust module
modules: Add an unstable-rust module Like other language specific modules this module is module for holding rust specific helpers. This commit adds a test() function, which simplifies using rust's internal unittest mechanism. Rust tests are generally placed in the same code files as they are testing, in contrast to languages like C/C++ and python which generally place the tests in separate translation units. For meson this is somewhat problematic from a repetition point of view, as the only changes are generally adding --test, and possibly some dependencies. The rustmod.test() method provides a mechanism to remove the repatition: it takes a rust target, copies it, and then addes the `--test` option, then creates a Test() target with the `rust` protocol. You can pass additional dependencies via the `dependencies` keyword. This all makes for a nice, DRY, test definition.
4 years ago
*(new in 0.57.0)*
modules/rust: stabilize Mesa is using the rust module in production, so we should stabilize it.
2 years ago
*(Stable since 1.0.0)*
modules: Add an unstable-rust module Like other language specific modules this module is module for holding rust specific helpers. This commit adds a test() function, which simplifies using rust's internal unittest mechanism. Rust tests are generally placed in the same code files as they are testing, in contrast to languages like C/C++ and python which generally place the tests in separate translation units. For meson this is somewhat problematic from a repetition point of view, as the only changes are generally adding --test, and possibly some dependencies. The rustmod.test() method provides a mechanism to remove the repatition: it takes a rust target, copies it, and then addes the `--test` option, then creates a Test() target with the `rust` protocol. You can pass additional dependencies via the `dependencies` keyword. This all makes for a nice, DRY, test definition.
4 years ago
Capitalize "Meson" consistently as it is a proper name. [skip ci]
4 years ago
The rust module provides helper to integrate rust code into Meson. The
goal is to make using rust in Meson more pleasant, while still
remaining mesonic, this means that it attempts to make Rust work more
like Meson, rather than Meson work more like rust.
modules: Add an unstable-rust module Like other language specific modules this module is module for holding rust specific helpers. This commit adds a test() function, which simplifies using rust's internal unittest mechanism. Rust tests are generally placed in the same code files as they are testing, in contrast to languages like C/C++ and python which generally place the tests in separate translation units. For meson this is somewhat problematic from a repetition point of view, as the only changes are generally adding --test, and possibly some dependencies. The rustmod.test() method provides a mechanism to remove the repatition: it takes a rust target, copies it, and then addes the `--test` option, then creates a Test() target with the `rust` protocol. You can pass additional dependencies via the `dependencies` keyword. This all makes for a nice, DRY, test definition.
4 years ago
## Functions
### test(name: string, target: library | executable, dependencies: []Dependency)
Rewrap long text lines in docs. [skip ci]
4 years ago
This function creates a new rust unittest target from an existing rust
based target, which may be a library or executable. It does this by
copying the sources and arguments passed to the original target and
adding the `--test` argument to the compilation, then creates a new
test target which calls that executable, using the rust test protocol.
modules: Add an unstable-rust module Like other language specific modules this module is module for holding rust specific helpers. This commit adds a test() function, which simplifies using rust's internal unittest mechanism. Rust tests are generally placed in the same code files as they are testing, in contrast to languages like C/C++ and python which generally place the tests in separate translation units. For meson this is somewhat problematic from a repetition point of view, as the only changes are generally adding --test, and possibly some dependencies. The rustmod.test() method provides a mechanism to remove the repatition: it takes a rust target, copies it, and then addes the `--test` option, then creates a Test() target with the `rust` protocol. You can pass additional dependencies via the `dependencies` keyword. This all makes for a nice, DRY, test definition.
4 years ago
This accepts all of the keyword arguments as the
docs: Fix broken links
3 years ago
[[test]] function except `protocol`, it will set
modules: Add an unstable-rust module Like other language specific modules this module is module for holding rust specific helpers. This commit adds a test() function, which simplifies using rust's internal unittest mechanism. Rust tests are generally placed in the same code files as they are testing, in contrast to languages like C/C++ and python which generally place the tests in separate translation units. For meson this is somewhat problematic from a repetition point of view, as the only changes are generally adding --test, and possibly some dependencies. The rustmod.test() method provides a mechanism to remove the repatition: it takes a rust target, copies it, and then addes the `--test` option, then creates a Test() target with the `rust` protocol. You can pass additional dependencies via the `dependencies` keyword. This all makes for a nice, DRY, test definition.
4 years ago
that automatically.
Additional, test only dependencies may be passed via the dependencies
argument.
rust: Add a module wrapper for bindgen This has a couple of advantages over rolling it by hand: 1. it correctly handles include_directories objects, which is always handy 2. it correctly generates a depfile for you, which makes it more reliable 3. it requires less typing
4 years ago
modules/rust: Add support for dependencies in bindgen This is needed for cases where we need external C headers, which are passed to clang.
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### bindgen(*, input: string | BuildTarget | [](string | BuildTarget), output: string, include_directories: [](include_directories | string), c_args: []string, args: []string, dependencies: []Dependency)
rust: Add a module wrapper for bindgen This has a couple of advantages over rolling it by hand: 1. it correctly handles include_directories objects, which is always handy 2. it correctly generates a depfile for you, which makes it more reliable 3. it requires less typing
4 years ago
This function wraps bindgen to simplify creating rust bindings around C
libraries. This has two advantages over hand-rolling ones own with a
`generator` or `custom_target`:
- It handles `include_directories`, so one doesn't have to manually convert them to `-I...`
- It automatically sets up a depfile, making the results more reliable
It takes the following keyword arguments
- input — A list of Files, Strings, or CustomTargets. The first element is
the header bindgen will parse, additional elements are dependencies.
- output — the name of the output rust file
modules/rust: Add support for string include_directories Which we support for basically every other case, but not this one.
2 years ago
- include_directories — A list of `include_directories` or `string` objects,
these are passed to clang as `-I` arguments *(string since 1.0.0)*
rust: Add a module wrapper for bindgen This has a couple of advantages over rolling it by hand: 1. it correctly handles include_directories objects, which is always handy 2. it correctly generates a depfile for you, which makes it more reliable 3. it requires less typing
4 years ago
- c_args — A list of string arguments to pass to clang untouched
- args — A list of string arguments to pass to `bindgen` untouched.
modules/rust: Add support for dependencies in bindgen This is needed for cases where we need external C headers, which are passed to clang.
2 years ago
- dependencies — A list of `Dependency` objects to pass to the underlying clang call (*since 1.0.0*)
rust: Add a module wrapper for bindgen This has a couple of advantages over rolling it by hand: 1. it correctly handles include_directories objects, which is always handy 2. it correctly generates a depfile for you, which makes it more reliable 3. it requires less typing
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```meson
rust = import('unstable-rust')
inc = include_directories('..'¸ '../../foo')
generated = rust.bindgen(
docs: fix rust module bindgen arguments Fixes: 9795
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input : 'myheader.h',
output : 'generated.rs',
doc: Fix array syntax [skip ci] Adds a square bracket to create a valid array.
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include_directories : [inc, include_directories('foo')],
rust: Add a module wrapper for bindgen This has a couple of advantages over rolling it by hand: 1. it correctly handles include_directories objects, which is always handy 2. it correctly generates a depfile for you, which makes it more reliable 3. it requires less typing
4 years ago
args : ['--no-rustfmt-bindings'],
c_args : ['-DFOO=1'],
)
```
If the header depeneds on generated headers, those headers must be passed to
`bindgen` as well to ensure proper dependency ordering, static headers do not
need to be passed, as a proper depfile is generated:
```meson
h1 = custom_target(...)
h2 = custom_target(...)
r1 = rust.bindgen(
docs: fix rust module bindgen arguments Fixes: 9795
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input : [h1, h2], # h1 includes h2,
output : 'out.rs',
rust: Add a module wrapper for bindgen This has a couple of advantages over rolling it by hand: 1. it correctly handles include_directories objects, which is always handy 2. it correctly generates a depfile for you, which makes it more reliable 3. it requires less typing
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)
```