1 files changed, 31 insertions, 0 deletions
diff --git a/compiler/rustc_codegen_cranelift/src/toolchain.rs b/compiler/rustc_codegen_cranelift/src/toolchain.rs
new file mode 100644
index 000000000..f86236ef3
--- /dev/null
+++ b/compiler/rustc_codegen_cranelift/src/toolchain.rs
@@ -0,0 +1,31 @@
+//! Locating various executables part of a C toolchain.
+
+use std::path::PathBuf;
+
+use rustc_codegen_ssa::back::link::linker_and_flavor;
+use rustc_session::Session;
+
+/// Tries to infer the path of a binary for the target toolchain from the linker name.
+pub(crate) fn get_toolchain_binary(sess: &Session, tool: &str) -> PathBuf {
+    let (mut linker, _linker_flavor) = linker_and_flavor(sess);
+    let linker_file_name = linker
+        .file_name()
+        .and_then(|name| name.to_str())
+        .unwrap_or_else(|| sess.fatal("couldn't extract file name from specified linker"));
+
+    if linker_file_name == "ld.lld" {
+        if tool != "ld" {
+            linker.set_file_name(tool)
+        }
+    } else {
+        let tool_file_name = linker_file_name
+            .replace("ld", tool)
+            .replace("gcc", tool)
+            .replace("clang", tool)
+            .replace("cc", tool);
+
+        linker.set_file_name(tool_file_name)
+    }
+
+    linker
+}