42 lines
1.7 KiB
Rust
42 lines
1.7 KiB
Rust
//! Provides the `link!` macro used by the generated windows bindings.
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//!
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//! This is a simple wrapper around an `extern` block with a `#[link]` attribute.
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//! It's very roughly equivalent to the windows-targets crate.
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#![no_std]
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#![no_core]
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#![feature(decl_macro)]
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#![feature(no_core)]
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#[cfg(feature = "windows_raw_dylib")]
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pub macro link {
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($library:literal $abi:literal $($link_name:literal)? $(#[$doc:meta])? fn $($function:tt)*) => (
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#[cfg_attr(not(target_arch = "x86"), link(name = $library, kind = "raw-dylib", modifiers = "+verbatim"))]
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#[cfg_attr(target_arch = "x86", link(name = $library, kind = "raw-dylib", modifiers = "+verbatim", import_name_type = "undecorated"))]
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unsafe extern $abi {
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$(#[link_name=$link_name])?
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pub fn $($function)*;
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}
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)
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}
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#[cfg(not(feature = "windows_raw_dylib"))]
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pub macro link {
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($library:literal $abi:literal $($link_name:literal)? $(#[$doc:meta])? fn $($function:tt)*) => (
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// Note: the windows-targets crate uses a pre-built Windows.lib import library which we don't
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// have in this repo. So instead we always link kernel32.lib and add the rest of the import
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// libraries below by using an empty extern block. This works because extern blocks are not
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// connected to the library given in the #[link] attribute.
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#[link(name = "kernel32")]
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unsafe extern $abi {
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$(#[link_name=$link_name])?
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pub fn $($function)*;
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}
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)
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}
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#[cfg(not(feature = "windows_raw_dylib"))]
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#[cfg_attr(target_vendor = "win7", link(name = "advapi32"))]
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#[link(name = "ntdll")]
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#[link(name = "userenv")]
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#[link(name = "ws2_32")]
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#[link(name = "dbghelp")] // required for backtrace-rs symbolization
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unsafe extern "C" {}
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