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-rw-r--r--src/librustdoc/config.rs17
1 files changed, 14 insertions, 3 deletions
diff --git a/src/librustdoc/config.rs b/src/librustdoc/config.rs
index be7e319bc79..f078ad2fb53 100644
--- a/src/librustdoc/config.rs
+++ b/src/librustdoc/config.rs
@@ -460,8 +460,6 @@ impl Options {
             &matches.free[0]
         });
 
-        let libs =
-            matches.opt_strs("L").iter().map(|s| SearchPath::from_cli_opt(early_dcx, s)).collect();
         let externs = parse_externs(early_dcx, matches, &unstable_opts);
         let extern_html_root_urls = match parse_extern_html_roots(matches) {
             Ok(ex) => ex,
@@ -625,6 +623,20 @@ impl Options {
         }
 
         let target = parse_target_triple(early_dcx, matches);
+        let maybe_sysroot = matches.opt_str("sysroot").map(PathBuf::from);
+
+        let sysroot = match &maybe_sysroot {
+            Some(s) => s.clone(),
+            None => {
+                rustc_session::filesearch::get_or_default_sysroot().expect("Failed finding sysroot")
+            }
+        };
+
+        let libs = matches
+            .opt_strs("L")
+            .iter()
+            .map(|s| SearchPath::from_cli_opt(&sysroot, &target, early_dcx, s))
+            .collect();
 
         let show_coverage = matches.opt_present("show-coverage");
 
@@ -653,7 +665,6 @@ impl Options {
         let bin_crate = crate_types.contains(&CrateType::Executable);
         let proc_macro_crate = crate_types.contains(&CrateType::ProcMacro);
         let playground_url = matches.opt_str("playground-url");
-        let maybe_sysroot = matches.opt_str("sysroot").map(PathBuf::from);
         let module_sorting = if matches.opt_present("sort-modules-by-appearance") {
             ModuleSorting::DeclarationOrder
         } else {