ensure existence of the tool crate dir before linking

Signed-off-by: onur-ozkan <work@onurozkan.dev>

Author: onur-ozkan

src/bootstrap/src/core/build_steps/doc.rs

@@ -685,8 +685,6 @@ impl Step for Rustc {
             target,
         );
 
-        let out_dir = builder.stage_out(compiler, Mode::Rustc).join(target.triple).join("doc");
-
         // Build cargo command.
         let mut cargo = builder.cargo(compiler, Mode::Rustc, SourceType::InTree, target, "doc");
         cargo.rustdocflag("--document-private-items");
@@ -713,6 +711,7 @@ impl Step for Rustc {
 
         let mut to_open = None;
 
+        let out_dir = builder.stage_out(compiler, Mode::Rustc).join(target.triple).join("doc");
         for krate in &*self.crates {
             // Create all crate output directories first to make sure rustdoc uses
             // relative links.
@@ -822,22 +821,6 @@ macro_rules! tool_doc {
                     SourceType::Submodule
                 };
 
-                // Symlink compiler docs to the output directory of rustdoc documentation.
-                let out_dirs = [
-                    builder.stage_out(compiler, Mode::ToolRustc).join(target.triple).join("doc"),
-                    // Cargo uses a different directory for proc macros.
-                    builder.stage_out(compiler, Mode::ToolRustc).join("doc"),
-                ];
-
-                $(for krate in $crates {
-                    let dir_name = krate.replace("-", "_");
-                    t!(fs::create_dir_all(&out.join(dir_name)));
-                })?
-
-                for out_dir in out_dirs {
-                    symlink_dir_force(&builder.config, &out, &out_dir);
-                }
-
                 // Build cargo command.
                 let mut cargo = prepare_tool_cargo(
                     builder,
@@ -870,6 +853,17 @@ macro_rules! tool_doc {
                 cargo.rustdocflag("--generate-link-to-definition");
                 cargo.rustdocflag("-Zunstable-options");
 
+                let out_dir = builder.stage_out(compiler, Mode::ToolRustc).join(target.triple).join("doc");
+                $(for krate in $crates {
+                    let dir_name = krate.replace("-", "_");
+                    t!(fs::create_dir_all(out_dir.join(&*dir_name)));
+                })?
+
+                // Symlink compiler docs to the output directory of rustdoc documentation.
+                symlink_dir_force(&builder.config, &out, &out_dir);
+                let proc_macro_out_dir = builder.stage_out(compiler, Mode::ToolRustc).join("doc");
+                symlink_dir_force(&builder.config, &out, &proc_macro_out_dir);
+
                 let _guard = builder.msg_doc(compiler, stringify!($tool).to_lowercase(), target);
                 builder.run(&mut cargo.into());