diff --git a/android-activity/build.rs b/android-activity/build.rs
index eab6121..833ecaa 100644
--- a/android-activity/build.rs
+++ b/android-activity/build.rs
@@ -1,11 +1,14 @@
 #![allow(dead_code)]
 
 fn build_glue_for_game_activity() {
+    let android_games_sdk =
+        std::env::var("ANDROID_GAMES_SDK").unwrap_or_else(|_err| "android-games-sdk".to_string());
+
     let activity_path = |src_inc, name| {
-        format!("android-games-sdk/game-activity/prefab-src/modules/game-activity/{src_inc}/game-activity/{name}")
+        format!("{android_games_sdk}/game-activity/prefab-src/modules/game-activity/{src_inc}/game-activity/{name}")
     };
     let textinput_path = |src_inc, name| {
-        format!("android-games-sdk/game-text-input/prefab-src/modules/game-text-input/{src_inc}/game-text-input/{name}")
+        format!("{android_games_sdk}/game-text-input/prefab-src/modules/game-text-input/{src_inc}/game-text-input/{name}")
     };
 
     for f in ["GameActivity.cpp", "GameActivityEvents.cpp"] {
diff --git a/android-activity/generate-bindings.sh b/android-activity/generate-bindings.sh
old mode 100644
new mode 100755
index cee8691..8c1a4e9
--- a/android-activity/generate-bindings.sh
+++ b/android-activity/generate-bindings.sh
@@ -2,6 +2,7 @@
 
 # First install bindgen-cli via `cargo install bindgen-cli`
 
+SDK_DIR="${ANDROID_GAMES_SDK:-android-games-sdk}"
 if test -z "${ANDROID_NDK_ROOT}"; then
     export ANDROID_NDK_ROOT=${ANDROID_NDK_HOME}
 fi
@@ -37,9 +38,9 @@ while read ARCH && read TARGET ; do
         --blocklist-function 'GameActivity_onCreate_C' \
         --newtype-enum '\w+_(result|status)_t' \
         -- \
-        -Iandroid-games-sdk/game-activity/prefab-src/modules/game-activity/include \
-        -Iandroid-games-sdk/game-text-input/prefab-src/modules/game-text-input/include \
-        -Iandroid-games-sdk/include \
+        "-I$SDK_DIR/game-activity/prefab-src/modules/game-activity/include" \
+        "-I$SDK_DIR/game-text-input/prefab-src/modules/game-text-input/include" \
+        "-I$SDK_DIR/include" \
         --sysroot="$SYSROOT" --target=$TARGET
 
 done << EOF