progressag/sys

1 files changed, 17 insertions, 1 deletions

diff --git a/build.rs b/build.rs
index 9f26302..de9ae04 100644
--- a/build.rs
+++ b/build.rs
@@ -1,9 +1,25 @@
 #[cfg(not(target_os = "dragonfly"))]
-fn main() {}
+fn main() {
+    enable_getdents();
+}
 
 #[cfg(target_os = "dragonfly")]
 fn main() {
+    enable_getdents();
     cc::Build::new()
         .file("src/os/unix/errno-dragonfly.c")
         .compile("errno-dragonfly");
 }
+
+fn enable_getdents() {
+    if std::env::var_os("CARGO_CFG_WALKDIR_DISABLE_GETDENTS").is_some() {
+        return;
+    }
+    let os = match std::env::var("CARGO_CFG_TARGET_OS") {
+        Err(_) => return,
+        Ok(os) => os,
+    };
+    if os == "linux" {
+        println!("cargo:rustc-cfg=walkdir_getdents");
+    }
+}