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Simplify checking of crt_static_feature()

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This commit is contained in:
12101111 2020-03-08 14:24:02 +08:00
parent 84349cc564
commit dbed65afae
1 changed files with 10 additions and 26 deletions
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36
src/librustc_session/session.rs
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@ -556,33 +556,17 @@ pub fn crt_static_feature(&self, crate_type: Option<config::CrateType>) -> bool
let found_negative = requested_features.clone().any(|r| r == "-crt-static");
let found_positive = requested_features.clone().any(|r| r == "+crt-static");
if self.target.target.options.crt_static_default {
// `proc-macro` always required to be compiled to dylibs.
// We don't use a static crt unless the `+crt-static` feature was passed.
if !self.target.target.options.crt_static_allows_dylibs {
match crate_type {
Some(config::CrateType::ProcMacro) => found_positive,
Some(_) => !found_negative,
None => {
// FIXME: When crate_type is not available,
// we use compiler options to determine the crate_type.
// We can't check `#![crate_type = "proc-macro"]` here.
if self.opts.crate_types.contains(&config::CrateType::ProcMacro) {
found_positive
} else {
!found_negative
}
}
}
} else {
// If the target we're compiling for requests a static crt by default,
// then see if the `-crt-static` feature was passed to disable that.
!found_negative
}
} else {
// If the target we're compiling for don't have a static crt by default then see if the
// `+crt-static` feature was passed.
if found_positive || found_negative {
found_positive
} else if crate_type == Some(config::CrateType::ProcMacro)
|| self.opts.crate_types.contains(&config::CrateType::ProcMacro)
{
// FIXME: When crate_type is not available,
// we use compiler options to determine the crate_type.
// We can't check `#![crate_type = "proc-macro"]` here.
false
} else {
self.target.target.options.crt_static_default
}
}