diff --git a/src/protocol/parser/mod.rs b/src/protocol/parser/mod.rs
index 1d2eee5bc1b2683818d37d490b6d745636b034f2..8f1500639951df5c37527325b710f7e2f3e88097 100644
--- a/src/protocol/parser/mod.rs
+++ b/src/protocol/parser/mod.rs
@@ -136,11 +136,12 @@ pub struct Parser {
     // Compiler options
     pub write_tokens_to: Option<String>,
     pub write_ast_to: Option<String>,
+    pub std_lib_dir: Option<String>,
     pub(crate) arch: TargetArch,
 }
 
 impl Parser {
-    pub fn new() -> Result<Self, String> {
+    pub fn new(std_lib_dir: Option<String>) -> Result<Self, String> {
         let mut parser = Parser{
             heap: Heap::new(),
             string_pool: StringPool::new(),
@@ -158,6 +159,7 @@ impl Parser {
             pass_stack_size: PassStackSize::new(),
             write_tokens_to: None,
             write_ast_to: None,
+            std_lib_dir,
             arch: TargetArch::new(),
         };
 
@@ -309,9 +311,16 @@ impl Parser {
             // Path variable is set
             (path, true)
         } else {
-            let mut path = String::with_capacity(REOWOLF_PATH_DIR.len() + 2);
-            path.push_str("./");
-            path.push_str(REOWOLF_PATH_DIR);
+            let path = match self.std_lib_dir.take() {
+                Some(path) => path,
+                None => {
+                    let mut path = String::with_capacity(REOWOLF_PATH_DIR.len() + 2);
+                    path.push_str("./");
+                    path.push_str(REOWOLF_PATH_DIR);
+                    path
+                }
+            };
+
             (path, false)
         };