diff --git a/Makefile b/Makefile
index 9c703e3..ab99748 100644
--- a/Makefile
+++ b/Makefile
@@ -1,15 +1,30 @@
 $(CC)=clang
 
-default: tokenize.c closures.c
-	$(CC) -DNDEBUG -c -fPIC -Wall -Wextra -pedantic -Wpointer-arith -Werror --std=c99 -O3 ./tokenize.c
+default: tokenize.c closures.c tokenize.h closures.h
+	$(CC) -lmaa -DNDEBUG -Wall -Wextra -pedantic -Wpointer-arith -Werror -std=c99 -O3 ./tokenize.c;
+	$(CC) -DNDEBUG -Wall -Wextra -pedantic -Wpointer-arith -Werror -std=c99 -O3 ./closures.c;
+
+unsafe: tokenize.c closures.c tokenize.h closures.h
+	$(CC) -lmaa -DNDEBUG -std=c99 -O3 ./tokenize.c;
+	$(CC) -DNDEBUG -std=c99 -O3 ./closures.c;
+
+unsafelib: tokenize.c closures.c tokenize.h closures.h
+	$(CC) -DLIB -DNDEBUG -c -fpic -std=c99 -O3 ./tokenize.c;
+	$(CC) -lmaa -shared -o tokenize.so tokenize.o;
+
+	$(CC) -DLIB -DNDEBUG -c -fpic -std=c99 -O3 ./closures.c;
+	$(CC) -shared -o closures.so closures.o;
+
+lib: tokenize.c closures.c tokenize.h closures.h
+	$(CC) -DLIB -DNDEBUG -c -fpic -Wall -Wextra -pedantic -Wpointer-arith -Werror -std=c99 -O3 ./tokenize.c
 	$(CC) -lmaa -shared -o tokenize.so tokenize.o;
 
-	$(CC) -DNDEBUG -c -fPIC -Wall -Wextra -pedantic -Wpointer-arith -Werror --std=c99 -O3 ./closures.c;
+	$(CC) -DLIB -DNDEBUG -c -fpic -Wall -Wextra -pedantic -Wpointer-arith -Werror -std=c99 -O3 ./closures.c;
 	$(CC) -shared -o closures.so closures.o;
 
-debug: tokenize.c closures.c
-	$(CC) -g -c -fPIC -Wall -Wextra -pedantic -Wpointer-arith -Werror --std=c99 ./tokenize.c;
+debug: tokenize.c closures.c tokenize.h closures.h
+	$(CC) -g -c -fpic -Wall -Wextra -pedantic -Wpointer-arith -Werror -std=c99 ./tokenize.c;
 	$(CC) -lmaa -shared -o tokenize.so tokenize.o;
 
-	$(CC) -g -c -fPIC -Wall -Wextra -pedantic -Wpointer-arith -Werror --std=c99 ./closures.c;
+	$(CC) -g -c -fpic -Wall -Wextra -pedantic -Wpointer-arith -Werror -std=c99 ./closures.c;
 	$(CC) -shared -o closures.so closures.o;
diff --git a/closures.c b/closures.c
index 49f98dd..bc4b50c 100644
--- a/closures.c
+++ b/closures.c
@@ -90,7 +90,8 @@ invoke(closure_t closure, svalue_t val) {
   return func(val, closure.fvars);
 }
 
-/*static svalue_t*
+#ifndef LIB
+static svalue_t*
 make_adder_inner(svalue_t x, svalue_t *env) {
   svalue_variants_t val;
   val.integer = env[0].value.integer + x.value.integer;
@@ -101,9 +102,9 @@ static closure_t
 make_adder(svalue_t *inc) {
   closure_t closure = make_closure(make_adder_inner, inc);
   return closure;
-}*/
+}
 
-/*int
+int
 main(void) {
   closure_t add2 = make_adder(box_int(2));
   printf("%d\n", invoke(add2, *box_int(5))->value.integer);
@@ -111,4 +112,5 @@ main(void) {
   (void)box_double;
   (void)box_string;
   return 0;
-}*/
+}
+#endif
diff --git a/closures.h b/closures.h
index 6fd1a20..1639ceb 100644
--- a/closures.h
+++ b/closures.h
@@ -50,9 +50,10 @@ make_closure(svalue_t* (*func)(svalue_t, svalue_t*),
 svalue_t*
 invoke(closure_t, svalue_t);
 
-/*static svalue_t*
+#ifndef LIB
+static svalue_t*
 make_adder_inner(svalue_t, svalue_t *);
 
 static closure_t
 make_adder(svalue_t *);
-*/
+#endif
diff --git a/tokenize.c b/tokenize.c
index c44a0cb..5c5ba37 100644
--- a/tokenize.c
+++ b/tokenize.c
@@ -467,3 +467,9 @@ release_tokens(token_stream *tokens) {
   hsh_destroy(tokens->memo);
   return true;
 }
+
+#ifndef LIB
+int main(void) {
+  return 0;
+}
+#endif