Don't specify +whole-archive before rust 1.61

Cargo.lock

@@ -212,6 +212,7 @@ dependencies = [
  "tree_magic_mini",
  "typed-arena",
  "unicode-width",
+ "version_check",
  "walkdir",
  "wu-diff",
 ]
@@ -686,6 +687,12 @@ version = "0.2.3"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "957e51f3646910546462e67d5f7599b9e4fb8acdd304b087a6494730f9eebf04"
 
+[[package]]
+name = "version_check"
+version = "0.9.4"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "49874b5167b65d7193b8aba1567f5c7d93d001cafc34600cee003eda787e483f"
+
 [[package]]
 name = "walkdir"
 version = "2.3.2"

Cargo.toml

@@ -55,6 +55,7 @@ pretty_assertions = "1.2.1"
 [build-dependencies]
 cc = "1.0.73"
 rayon = "1.5.2"
+version_check = "0.9.4"
 
 [profile.release]
 # Release builds don't have debug symbols by default. We explicitly

build.rs

@@ -1,5 +1,6 @@
 use rayon::prelude::*;
 use std::path::PathBuf;
+use version_check as rustc;
 
 struct TreeSitterParser {
     name: &'static str,
@@ -11,7 +12,15 @@ struct TreeSitterParser {
 ///
 /// This should be possible in the cc crate directly after
 /// https://github.com/rust-lang/cc-rs/pull/671
-fn emit_whole_archive_link_flags(lib_name: &str, is_cpp: bool) {
+fn emit_whole_archive_link_flags(build: &mut cc::Build, lib_name: &str, is_cpp: bool) {
+    if rustc::is_min_version("1.60.0").unwrap_or(false) {
+        // whole-archive was only stabilised in 1.61, and we don't
+        // need it in earlier versions.
+        return;
+    }
+
+    build.cargo_metadata(false);
+
     println!("cargo:rustc-link-lib=static:+whole-archive={}", lib_name);
     println!(
         "cargo:rustc-link-search=native={}",
@@ -93,9 +102,7 @@ impl TreeSitterParser {
                 cpp_build.file(dir.join(file));
             }
 
-            cpp_build.cargo_metadata(false);
-            emit_whole_archive_link_flags(&format!("{}-cpp", self.name), true);
-
+            emit_whole_archive_link_flags(&mut cpp_build, &format!("{}-cpp", self.name), true);
             cpp_build.compile(&format!("{}-cpp", self.name));
         }
 
@@ -108,9 +115,7 @@ impl TreeSitterParser {
             build.file(dir.join(file));
         }
 
-        build.cargo_metadata(false);
-        emit_whole_archive_link_flags(self.name, false);
-
+        emit_whole_archive_link_flags(&mut build, self.name, false);
         build.compile(self.name);
     }
 }