diff --git a/build.sh b/build.sh
index 5e35caa..c7d210f 100755
--- a/build.sh
+++ b/build.sh
@@ -6,14 +6,14 @@ cd spectre_oxi
 
 cargo build --release
 
+[ "$CARGO_TARGET_DIR" = "" ] && CARGO_TARGET_DIR=target
+
 if [ "$(uname)" == "Darwin" ]; then
-    cp target/release/libspectre_oxi.dylib ../lua/spectre_oxi.so
+    cp "$CARGO_TARGET_DIR"/release/libspectre_oxi.dylib ../lua/spectre_oxi.so
 elif [ "$(expr substr $(uname -s) 1 5)" == "Linux" ]; then
-    cp target/release/libspectre_oxi.so ../lua/spectre_oxi.so
+    cp "$CARGO_TARGET_DIR"/release/libspectre_oxi.so ../lua/spectre_oxi.so
 elif [ "$(expr substr $(uname -s) 1 10)" == "MINGW32_NT" ]; then
-    cp target/release/libspectre_oxi.dll ../lua/spectre_oxi.dll
+    cp "$CARGO_TARGET_DIR"/release/libspectre_oxi.dll ../lua/spectre_oxi.dll
 fi
 rm -rf target
 echo "Build Done"
-
-