diff --git a/Android.bp b/Android.bp
index 27ab02d..b9fd260 100644
--- a/Android.bp
+++ b/Android.bp
@@ -1,17 +1,30 @@
-// This file is generated by cargo2android.py --run --device --dependencies --tests.
+// This file is generated by cargo2android.py --run --device --dependencies --tests --copy-out.
+
+genrule {
+    name: "copy_proc-macro-nested_build_out",
+    srcs: ["out/*"],
+    cmd: "cp $(in) $(genDir)",
+    out: ["count.rs"],
+}
 
 rust_library {
     name: "libproc_macro_nested",
     host_supported: true,
     crate_name: "proc_macro_nested",
-    srcs: ["src/lib.rs"],
+    srcs: [
+        "src/lib.rs",
+        ":copy_proc-macro-nested_build_out",
+    ],
     edition: "2015",
 }
 
 rust_defaults {
     name: "proc-macro-nested_defaults",
     crate_name: "proc_macro_nested",
-    srcs: ["src/lib.rs"],
+    srcs: [
+        "src/lib.rs",
+        ":copy_proc-macro-nested_build_out",
+    ],
     test_suites: ["general-tests"],
     auto_gen_config: true,
     edition: "2015",
diff --git a/patches/std.diff b/patches/std.diff
new file mode 100644
index 0000000..6d71af2
--- /dev/null
+++ b/patches/std.diff
@@ -0,0 +1,14 @@
+diff --git a/src/lib.rs b/src/lib.rs
+index 9ec6df0..0cd8302 100644
+--- a/src/lib.rs
++++ b/src/lib.rs
+@@ -40,6 +40,9 @@
+ 
+ #![no_std]
+ 
++// ANDROID: Use std to allow building as a dylib.
++extern crate std;
++
+ include!(concat!(env!("OUT_DIR"), "/count.rs"));
+ 
+ #[doc(hidden)]
diff --git a/post_update.sh b/post_update.sh
deleted file mode 100755
index befd02c..0000000
--- a/post_update.sh
+++ /dev/null
@@ -1,16 +0,0 @@
-#!/bin/bash
-
-# $1 Path to the new version.
-# $2 Path to the old version.
-
-set -x
-set -e
-
-# out/count.rs should be copied after cargo build.
-# Change src/lib.rs to include files from ../out/
-SRCFILE=src/lib.rs
-OLDSTR='include!(concat!(env!("OUT_DIR"), "/count.rs"));'
-NEWSTR='include!("../out/count.rs");  // ANDROID'
-sed -i -e "s:$OLDSTR:$NEWSTR:" $SRCFILE
-# Make sure that sed replaced $OLDSTR with $NEWSTR
-grep "$NEWSTR" $SRCFILE > /dev/null
diff --git a/src/lib.rs b/src/lib.rs
index a8b7694..9ec6df0 100644
--- a/src/lib.rs
+++ b/src/lib.rs
@@ -43,7 +43,7 @@
 // ANDROID: Use std to allow building as a dylib.
 extern crate std;
 
-include!("../out/count.rs");  // ANDROID
+include!(concat!(env!("OUT_DIR"), "/count.rs"));
 
 #[doc(hidden)]
 #[macro_export]