patches/std.diff

diff --git a/src/lib.rs b/src/lib.rs
index 42126dd..f37ed52 100644
--- a/src/lib.rs
+++ b/src/lib.rs
@@ -247,6 +247,10 @@
 #[rustfmt::skip]
 mod tables;
 
+/// Use std to allow building as a dylib.
+#[cfg(android_dylib)]
+extern crate std;
+
 use crate::tables::{ASCII_CONTINUE, ASCII_START, CHUNK, LEAF, TRIE_CONTINUE, TRIE_START};
 
 pub fn is_xid_start(ch: char) -> bool {