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Rollup merge of #98355 - hoodmane:emscripten-no-default, r=petrochenkov

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Update no_default_libraries handling for emscripten target

```@sbc100``` says:

> `-sDEFAULT_LIBRARY_FUNCS_TO_INCLUDE=[]` is almost certainly wrong/out-of-date.   This setting defaults to the empty list anyway these days so its redundant.  Also we now support `-nodefaultlibs` so you can use that, as with other toolchains.

https://github.com/rust-lang/rust/issues/98303#issuecomment-1162163684
This commit is contained in:
Michael Goulet 2022-06-23 14:39:12 -07:00 committed by GitHub
commit cc45ad50f8
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2 changed files with 2 additions and 1 deletions
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2
compiler/rustc_codegen_ssa/src/back/linker.rs
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@ -1140,7 +1140,7 @@ impl<'a> Linker for EmLinker<'a> {
fn no_crt_objects(&mut self) {}
fn no_default_libraries(&mut self) {
self.cmd.args(&["-s", "DEFAULT_LIBRARY_FUNCS_TO_INCLUDE=[]"]);
self.cmd.arg("-nodefaultlibs");
}
fn export_symbols(&mut self, _tmpdir: &Path, _crate_type: CrateType, symbols: &[String]) {

1
compiler/rustc_target/src/spec/wasm32_unknown_emscripten.rs
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@ -28,6 +28,7 @@ pub fn target() -> Target {
linker: None,
is_like_emscripten: true,
panic_strategy: PanicStrategy::Unwind,
no_default_libraries: false,
post_link_args,
families: cvs!["unix", "wasm"],
..options