diff --git a/nac3standalone/demo/run_demo.sh b/nac3standalone/demo/run_demo.sh
index 5151e930..f4185e74 100755
--- a/nac3standalone/demo/run_demo.sh
+++ b/nac3standalone/demo/run_demo.sh
@@ -9,5 +9,5 @@ fi
 
 rm -f *.o
 ../../target/release/nac3standalone $1
-clang -Wall -O2 -o $1.elf demo.c module*.o -lm
+clang -Wall -O2 -o $1.elf demo.c module.o -lm
 ./$1.elf
diff --git a/nac3standalone/src/main.rs b/nac3standalone/src/main.rs
index 05f131db..154a10e0 100644
--- a/nac3standalone/src/main.rs
+++ b/nac3standalone/src/main.rs
@@ -1,16 +1,16 @@
 use inkwell::{
     passes::{PassManager, PassManagerBuilder},
     targets::*,
-    OptimizationLevel,
+    OptimizationLevel, memory_buffer::MemoryBuffer,
 };
 use std::{borrow::Borrow, collections::HashMap, env, fs, path::Path, sync::Arc, time::SystemTime};
-use parking_lot::RwLock;
+use parking_lot::{RwLock, Mutex};
 
 use nac3parser::{ast::{Expr, ExprKind, StmtKind}, parser};
 use nac3core::{
     codegen::{
         concrete_type::ConcreteTypeStore, CodeGenTask, DefaultCodeGenerator, WithCall,
-        WorkerRegistry,
+        WorkerRegistry, irrt::load_irrt,
     },
     symbol_resolver::SymbolResolver,
     toplevel::{
@@ -264,36 +264,14 @@ fn main() {
         calls: instance.calls,
         id: 0,
     };
+
+    let membuffers: Arc<Mutex<Vec<Vec<u8>>>> = Default::default();
+    let membuffer = membuffers.clone();
+    
     let f = Arc::new(WithCall::new(Box::new(move |module| {
-        let builder = PassManagerBuilder::create();
-        builder.set_optimization_level(OptimizationLevel::Aggressive);
-        let passes = PassManager::create(());
-        builder.set_inliner_with_threshold(255);
-        builder.populate_module_pass_manager(&passes);
-        passes.run_on(module);
-
-        let triple = TargetMachine::get_default_triple();
-        let target =
-            Target::from_triple(&triple).expect("couldn't create target from target triple");
-        let target_machine = target
-            .create_target_machine(
-                &triple,
-                "",
-                "",
-                OptimizationLevel::Default,
-                RelocMode::Default,
-                CodeModel::Default,
-            )
-            .expect("couldn't create target machine");
-        target_machine
-            .write_to_file(
-                module,
-                FileType::Object,
-                Path::new(&format!("{}.o", module.get_name().to_str().unwrap())),
-            )
-            .expect("couldn't write module to file");
-
-        // println!("IR:\n{}", module.print_to_string().to_str().unwrap());
+        let buffer = module.write_bitcode_to_memory();
+        let buffer = buffer.as_slice().into();
+        membuffer.lock().push(buffer);
     })));
     let threads = (0..threads)
         .map(|i| Box::new(DefaultCodeGenerator::new(format!("module{}", i), 64)))
@@ -302,6 +280,56 @@ fn main() {
     registry.add_task(task);
     registry.wait_tasks_complete(handles);
 
+    let buffers = membuffers.lock();
+    let context = inkwell::context::Context::create();
+    let main = context
+        .create_module_from_ir(MemoryBuffer::create_from_memory_range(&buffers[0], "main"))
+        .unwrap();
+    for buffer in buffers.iter().skip(1) {
+        let other = context
+            .create_module_from_ir(MemoryBuffer::create_from_memory_range(buffer, "main"))
+            .unwrap();
+
+        main.link_in_module(other).unwrap();
+    }
+    main.link_in_module(load_irrt(&context)).unwrap();
+
+    let mut function_iter = main.get_first_function();
+    while let Some(func) = function_iter {
+        if func.count_basic_blocks() > 0 && func.get_name().to_str().unwrap() != "run" {
+            func.set_linkage(inkwell::module::Linkage::Private);
+        }
+        function_iter = func.get_next_function();
+    }
+
+    let builder = PassManagerBuilder::create();
+    builder.set_optimization_level(OptimizationLevel::Aggressive);
+    let passes = PassManager::create(());
+    builder.set_inliner_with_threshold(255);
+    builder.populate_module_pass_manager(&passes);
+    passes.run_on(&main);
+    
+    let triple = TargetMachine::get_default_triple();
+    let target =
+        Target::from_triple(&triple).expect("couldn't create target from target triple");
+    let target_machine = target
+        .create_target_machine(
+            &triple,
+            "",
+            "",
+            OptimizationLevel::Default,
+            RelocMode::Default,
+            CodeModel::Default,
+        )
+        .expect("couldn't create target machine");
+    target_machine
+        .write_to_file(
+            &main,
+            FileType::Object,
+            Path::new("module.o"),
+        )
+        .expect("couldn't write module to file");
+
     let final_time = SystemTime::now();
     println!(
         "codegen time (including LLVM): {}ms",