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Rollup merge of #45090 - rust-lang:petrochenkov-patch-1, r=alexcrichton

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Document that `-C ar=PATH` doesn't do anything

Are there any plans to use an external archiver in the future?
IIRC, it was used before, but its use was replaced with LLVM's built-in archive management machinery. I can't found a relevant PR though. EDIT: Found it - https://github.com/rust-lang/rust/pull/26926!

The `-C` option is stable so it still can't be removed right away even if there are no plans to use it (but maybe it can be deprecated?).
Target specifications have a field for archiver as well, which is unused too (these ones are unstable, so I guess it can be removed).

r? @alexcrichton
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kennytm 2017-10-08 13:39:05 +08:00 committed by GitHub
commit 048949724f
1 changed files with 2 additions and 1 deletions
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src/librustc/session/config.rs
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@ -864,7 +864,8 @@ options! {CodegenOptions, CodegenSetter, basic_codegen_options,
build_codegen_options, "C", "codegen", build_codegen_options, "C", "codegen",
CG_OPTIONS, cg_type_desc, cgsetters, CG_OPTIONS, cg_type_desc, cgsetters,
ar: Option<String> = (None, parse_opt_string, [UNTRACKED], ar: Option<String> = (None, parse_opt_string, [UNTRACKED],
"tool to assemble archives with"), "tool to assemble archives with (has no effect currently, \
rustc doesn't use an external archiver)"),
linker: Option<String> = (None, parse_opt_string, [UNTRACKED], linker: Option<String> = (None, parse_opt_string, [UNTRACKED],
"system linker to link outputs with"), "system linker to link outputs with"),
link_arg: Vec<String> = (vec![], parse_string_push, [UNTRACKED], link_arg: Vec<String> = (vec![], parse_string_push, [UNTRACKED],