Fix unexpected_cfgs warning

Juici · May 15, 2024 · f95f409 · f95f409
1 parent 1b73c71
commit f95f409
Showing 1 changed file with 6 additions and 1 deletion.
diff --git a/build.rs b/build.rs
@@ -1,7 +1,12 @@
 fn main() {
     println!("cargo:rerun-if-changed=build.rs");
 
-    if version_check::supports_feature("proc_macro_span").unwrap_or_default() {
+    if version_check::is_min_version("1.80.0").unwrap_or(false) {
+        println!("cargo:rustc-check-cfg=cfg(doc_cfg)");
+        println!("cargo:rustc-check-cfg=cfg(proc_macro_span)");
+    }
+
+    if version_check::supports_feature("proc_macro_span").unwrap_or(false) {
         println!("cargo:rustc-cfg=proc_macro_span");
     }
 }