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Rollup merge of #77208 - mati865:late-link-args-order, r=petrochenkov 

Late link args order

MSYS2 changed how winpthreads is built and as the result it now depends on more mingw-w64 libraries.

This PR affects only MinGW targets since nobody else is using `late_link_args_{dynamic,static}`. Now the order is similar to how it used to be before https://github.com/rust-lang/rust/pull/67502.
This commit is contained in:
Jonas Schievink 2020-09-27 01:53:23 +02:00 committed by GitHub
parent bb416f3a59 bfdb7903c9
commit 3d1d24da94
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2 changed files with 4 additions and 9 deletions
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6
compiler/rustc_codegen_ssa/src/back/link.rs
View File

@ -1333,9 +1333,6 @@ fn add_late_link_args(
crate_type: CrateType,
codegen_results: &CodegenResults,
) {
if let Some(args) = sess.target.target.options.late_link_args.get(&flavor) {
cmd.args(args);
}
let any_dynamic_crate = crate_type == CrateType::Dylib
|| codegen_results.crate_info.dependency_formats.iter().any(|(ty, list)| {
*ty == crate_type && list.iter().any(|&linkage| linkage == Linkage::Dynamic)
@ -1349,6 +1346,9 @@ fn add_late_link_args(
cmd.args(args);
}
}
if let Some(args) = sess.target.target.options.late_link_args.get(&flavor) {
cmd.args(args);
}
}
/// Add arbitrary "post-link" args defined by the target spec.

7
compiler/rustc_target/src/spec/windows_gnu_base.rs
View File

@ -23,6 +23,7 @@ pub fn opts() -> TargetOptions {
"-lmsvcrt".to_string(),
"-lmingwex".to_string(),
"-lmingw32".to_string(),
"-lgcc".to_string(), // alas, mingw* libraries above depend on libgcc
// mingw's msvcrt is a weird hybrid import library and static library.
// And it seems that the linker fails to use import symbols from msvcrt
// that are required from functions in msvcrt in certain cases. For example
@ -41,8 +42,6 @@ pub fn opts() -> TargetOptions {
// the shared libgcc_s-dw2-1.dll. This is required to support
// unwinding across DLL boundaries.
"-lgcc_s".to_string(),
"-lgcc".to_string(),
"-lkernel32".to_string(),
];
late_link_args_dynamic.insert(LinkerFlavor::Gcc, dynamic_unwind_libs.clone());
late_link_args_dynamic.insert(LinkerFlavor::Lld(LldFlavor::Ld), dynamic_unwind_libs);
@ -54,10 +53,6 @@ pub fn opts() -> TargetOptions {
// boundaries when unwinding across FFI boundaries.
"-lgcc_eh".to_string(),
"-l:libpthread.a".to_string(),
"-lgcc".to_string(),
// libpthread depends on libmsvcrt, so we need to link it *again*.
"-lmsvcrt".to_string(),
"-lkernel32".to_string(),
];
late_link_args_static.insert(LinkerFlavor::Gcc, static_unwind_libs.clone());
late_link_args_static.insert(LinkerFlavor::Lld(LldFlavor::Ld), static_unwind_libs);