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Get current target config from --print=cfg #111472

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merged 1 commit into from
May 16, 2023
Merged

Get current target config from --print=cfg #111472

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89 changes: 84 additions & 5 deletions src/tools/compiletest/src/common.rs
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Original file line number Diff line number Diff line change
Expand Up @@ -428,7 +428,6 @@ impl TargetCfgs {
))
.unwrap();

let mut current = None;
let mut all_targets = HashSet::new();
let mut all_archs = HashSet::new();
let mut all_oses = HashSet::new();
Expand All @@ -449,14 +448,11 @@ impl TargetCfgs {
}
all_pointer_widths.insert(format!("{}bit", cfg.pointer_width));

if target == config.target {
current = Some(cfg);
}
all_targets.insert(target.into());
}

Self {
current: current.expect("current target not found"),
current: Self::get_current_target_config(config),
all_targets,
all_archs,
all_oses,
Expand All @@ -467,6 +463,89 @@ impl TargetCfgs {
all_pointer_widths,
}
}

fn get_current_target_config(config: &Config) -> TargetCfg {
let mut arch = None;
let mut os = None;
let mut env = None;
let mut abi = None;
let mut families = Vec::new();
let mut pointer_width = None;
let mut endian = None;
let mut panic = None;

for config in
rustc_output(config, &["--print=cfg", "--target", &config.target]).trim().lines()
{
let (name, value) = config
.split_once("=\"")
.map(|(name, value)| {
(
name,
Some(
value
.strip_suffix("\"")
.expect("key-value pair should be properly quoted"),
),
)
})
.unwrap_or_else(|| (config, None));

match name {
"target_arch" => {
arch = Some(value.expect("target_arch should be a key-value pair").to_string());
}
"target_os" => {
os = Some(value.expect("target_os sould be a key-value pair").to_string());
}
"target_env" => {
env = Some(value.expect("target_env should be a key-value pair").to_string());
}
"target_abi" => {
abi = Some(value.expect("target_abi should be a key-value pair").to_string());
}
"target_family" => {
families
.push(value.expect("target_family should be a key-value pair").to_string());
}
"target_pointer_width" => {
pointer_width = Some(
value
.expect("target_pointer_width should be a key-value pair")
.parse::<u32>()
.expect("target_pointer_width should be a valid u32"),
);
}
"target_endian" => {
endian = Some(match value.expect("target_endian should be a key-value pair") {
"big" => Endian::Big,
"little" => Endian::Little,
_ => panic!("target_endian should be either 'big' or 'little'"),
});
}
"panic" => {
panic = Some(match value.expect("panic should be a key-value pair") {
"abort" => PanicStrategy::Abort,
"unwind" => PanicStrategy::Unwind,
_ => panic!("panic should be either 'abort' or 'unwind'"),
});
}
_ => (),
}
}

TargetCfg {
arch: arch.expect("target configuration should specify target_arch"),
os: os.expect("target configuration should specify target_os"),
env: env.expect("target configuration should specify target_env"),
abi: abi.expect("target configuration should specify target_abi"),
families,
pointer_width: pointer_width
.expect("target configuration should specify target_pointer_width"),
endian: endian.expect("target configuration should specify target_endian"),
panic: panic.expect("target configuration should specify panic"),
}
}
}

#[derive(Clone, Debug, serde::Deserialize)]
Expand Down