fccc04d3e7
This commit adds the necessary definitions for target specs and such as well as
the necessary support in libstd to compile basic `aarch64-pc-windows-msvc`
binaries. The target is not currently built on CI, but it can be built locally
with:
./configure --target=aarch64-pc-windows-msvc --set rust.lld
./x.py build src/libstd --target aarch64-pc-windows-msvc
Currently this fails to build `libtest` due to a linker bug (seemingly in LLD?)
which hasn't been investigate yet. Otherwise though with libstd you can build a
hello world program (linked with LLD). I've not tried to execute it yet, but it
at least links!
Full support for this target is still a long road ahead, but this is hopefully a
good stepping stone to get started.
Points of note about this target are:
* Currently defaults to `panic=abort` as support is still landing in LLVM for
SEH on AArch64.
* Currently defaults to LLD as a linker as I was able to get farther with it
than I was with `link.exe`
46 lines
1.5 KiB
Rust
46 lines
1.5 KiB
Rust
// Copyright 2018 The Rust Project Developers. See the COPYRIGHT
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// file at the top-level directory of this distribution and at
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// http://rust-lang.org/COPYRIGHT.
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//
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// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
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// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
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// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
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// option. This file may not be copied, modified, or distributed
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// except according to those terms.
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/// A macro for defining `#[cfg]` if-else statements.
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///
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/// This is similar to the `if/elif` C preprocessor macro by allowing definition
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/// of a cascade of `#[cfg]` cases, emitting the implementation which matches
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/// first.
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///
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/// This allows you to conveniently provide a long list `#[cfg]`'d blocks of code
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/// without having to rewrite each clause multiple times.
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macro_rules! cfg_if {
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($(
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if #[cfg($($meta:meta),*)] { $($it:item)* }
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) else * else {
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$($it2:item)*
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}) => {
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__cfg_if_items! {
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() ;
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$( ( ($($meta),*) ($($it)*) ), )*
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( () ($($it2)*) ),
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}
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}
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}
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macro_rules! __cfg_if_items {
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(($($not:meta,)*) ; ) => {};
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(($($not:meta,)*) ; ( ($($m:meta),*) ($($it:item)*) ), $($rest:tt)*) => {
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__cfg_if_apply! { cfg(all(not(any($($not),*)), $($m,)*)), $($it)* }
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__cfg_if_items! { ($($not,)* $($m,)*) ; $($rest)* }
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}
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}
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macro_rules! __cfg_if_apply {
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($m:meta, $($it:item)*) => {
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$(#[$m] $it)*
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}
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}
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