From e40faeffa2d9e980778fb46973f8d0eb090526a9 Mon Sep 17 00:00:00 2001 From: Chris Denton Date: Sat, 1 May 2021 20:59:26 +0100 Subject: [PATCH] Deduplicate native libs before they are passed to the linker --- compiler/rustc_codegen_ssa/src/back/link.rs | 8 ++++++++ 1 file changed, 8 insertions(+) diff --git a/compiler/rustc_codegen_ssa/src/back/link.rs b/compiler/rustc_codegen_ssa/src/back/link.rs index ea75943d6f3..dcdd0910aa6 100644 --- a/compiler/rustc_codegen_ssa/src/back/link.rs +++ b/compiler/rustc_codegen_ssa/src/back/link.rs @@ -1803,7 +1803,11 @@ fn add_local_native_libraries( codegen_results.crate_info.used_libraries.iter().filter(|l| relevant_lib(sess, l)); let search_path = archive_search_paths(sess); + let mut last = (NativeLibKind::Unspecified, None); for lib in relevant_libs { + // Skip if this library is the same as the last. + last = if (lib.kind, lib.name) == last { continue } else { (lib.kind, lib.name) }; + let name = match lib.name { Some(l) => l, None => continue, @@ -2127,8 +2131,12 @@ fn add_upstream_native_libraries( .expect("failed to find crate type in dependency format list"); let crates = &codegen_results.crate_info.used_crates_static; + let mut last = (NativeLibKind::Unspecified, None); for &(cnum, _) in crates { for lib in codegen_results.crate_info.native_libraries[&cnum].iter() { + // Skip if this library is the same as the last. + last = if (lib.kind, lib.name) == last { continue } else { (lib.kind, lib.name) }; + let name = match lib.name { Some(l) => l, None => continue,