Index: libc/src/lib.rs
===================================================================
--- a/src/lib.rs
+++ b/src/lib.rs
@@ -30,6 +30,10 @@
 )]
 #![cfg_attr(libc_const_extern_fn, feature(const_extern_fn))]
 
+// ANDROID: Use std to allow building as a dylib.
+#[cfg(android_dylib)]
+extern crate std;
+
 #[macro_use]
 mod macros;