diff --git a/build.sh b/build.sh
index bd63460..ff99e45 100755
--- a/build.sh
+++ b/build.sh
@@ -18,6 +18,18 @@ fi
 currentDir=$(pwd)
 threads=$(($(nproc)+1))
 
+#building lua
+
+cd extern/lua/
+if [[ $1 == "windows" ]]
+then
+    make mingw
+else
+    make linux
+fi
+cd $currentDir
+
+
 #building bullet
 
 cd extern/bullet/
diff --git a/extern/lua/src/.gitignore b/extern/lua/src/.gitignore
index 132cf25..5b925e1 100644
--- a/extern/lua/src/.gitignore
+++ b/extern/lua/src/.gitignore
@@ -1,2 +1,3 @@
+*.o
 lua
 luac