diff --git a/src/Makefile b/src/Makefile
index 3e53d54..d26e205 100644
--- a/src/Makefile
+++ b/src/Makefile
@@ -20,34 +20,43 @@
 # OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
 # SOFTWARE.
 
+UNAME := $(shell uname)
+
 CC?=cc
-CFLAGS=-std=gnu11 -O3 -Wall -Wextra -Werror -Wno-unused-parameter
+CFLAGS=-std=gnu11 -O3 -Wall -Wextra -Werror -Wno-unused-parameter -I/usr/include
 LDFLAGS=-L/usr/local/lib
 
+LUA_LIBS=-llua
+ifeq ($(UNAME), Linux)
+  LUA_LIBS = -llua5.1
+  CFLAGS += -I/usr/include/lua5.1
+  LDFLAGS += -L/usr/lib/arm-linux-gnueabihf
+endif
+
 EWM_EXECUTABLE=ewm
 EWM_SOURCES=cpu.c ins.c pia.c mem.c ewm.c fmt.c two.c scr.c dsk.c chr.c alc.c one.c tty.c utl.c boo.c lua.c
 EWM_OBJECTS=$(EWM_SOURCES:.c=.o)
-EWM_LIBS=-lSDL2 -llua
+EWM_LIBS=-lSDL2 $(LUA_LIBS)
 
 CPU_TEST_EXECUTABLE=cpu_test
 CPU_TEST_SOURCES=cpu.c ins.c mem.c fmt.c utl.c cpu_test.c lua.c
 CPU_TEST_OBJECTS=$(CPU_TEST_SOURCES:.c=.o)
-CPU_TEST_LIBS=-llua
+CPU_TEST_LIBS=$(LUA_LIBS)
 
 SCR_TEST_EXECUTABLE=scr_test
 SCR_TEST_SOURCES=cpu.c ins.c mem.c fmt.c two.c scr.c dsk.c chr.c alc.c utl.c scr_test.c lua.c
 SCR_TEST_OBJECTS=$(SCR_TEST_SOURCES:.c=.o)
-SCR_TEST_LIBS=-lSDL2 -llua
+SCR_TEST_LIBS=-lSDL2 $(LUA_LIBS)
 
 CPU_BENCH=cpu_bench
 CPU_BENCH_SOURCES=cpu.c ins.c mem.c fmt.c utl.c cpu_bench.c lua.c
 CPU_BENCH_OBJECTS=$(CPU_BENCH_SOURCES:.c=.o)
-CPU_BENCH_LIBS=-llua
+CPU_BENCH_LIBS=$(LUA_LIBS)
 
 MEM_BENCH=mem_bench
 MEM_BENCH_SOURCES=cpu.c ins.c mem.c fmt.c utl.c mem_bench.c lua.c
 MEM_BENCH_OBJECTS=$(MEM_BENCH_SOURCES:.c=.o)
-MEM_BENCH_LIBS=-llua
+MEM_BENCH_LIBS=$(LUA_LIBS)
 
 all: $(EWM_SOURCES) $(EWM_EXECUTABLE) $(CPU_TEST_SOURCES) $(CPU_TEST_EXECUTABLE) $(SCR_TEST_EXECUTABLE) $(CPU_BENCH) $(MEM_BENCH)
 
diff --git a/src/cpu.c b/src/cpu.c
index 2b6e9b1..548bca2 100644
--- a/src/cpu.c
+++ b/src/cpu.c
@@ -148,7 +148,7 @@ static int cpu_execute_instruction(struct cpu_t *cpu) {
             lua_pushinteger(cpu->lua->state, mem_get_word(cpu, pc+1));
             break;
       }
-      if (lua_pcall(cpu->lua->state, 3, 0, 0) != LUA_OK) {
+      if (lua_pcall(cpu->lua->state, 3, 0, 0) != 0) {
          printf("cpu: script error: %s\n", lua_tostring(cpu->lua->state, -1));
       }
    }
@@ -181,7 +181,7 @@ static int cpu_execute_instruction(struct cpu_t *cpu) {
             lua_pushinteger(cpu->lua->state, mem_get_word(cpu, pc+1));
             break;
       }
-      if (lua_pcall(cpu->lua->state, 3, 0, 0) != LUA_OK) {
+      if (lua_pcall(cpu->lua->state, 3, 0, 0) != 0) {
          printf("cpu: script error: %s\n", lua_tostring(cpu->lua->state, -1));
       }
    }
diff --git a/src/dsk.c b/src/dsk.c
index 761222e..95c1cf7 100644
--- a/src/dsk.c
+++ b/src/dsk.c
@@ -557,22 +557,7 @@ int ewm_dsk_set_disk_file(struct ewm_dsk_t *dsk, uint8_t drive, bool readonly, c
 
 // Lua Support
 
-static int ewm_dsk_lua_hello(lua_State *lua) {
-   printf("This is dsk.hello()\n");
-   return 0;
-}
-
-int ewm_dsk_luaopen(lua_State *state) {
-   luaL_Reg functions[] = {
-      {"hello", ewm_dsk_lua_hello},
-      {NULL, NULL}
-   };
-   luaL_newlib(state, functions);
-   return 1;
-}
-
 int ewm_dsk_init_lua(struct ewm_dsk_t *dsk, struct ewm_lua_t *lua) {
    dsk->lua = lua;
-   luaL_requiref(dsk->lua->state, "dsk", ewm_dsk_luaopen, 0);
    return 0;
 }
diff --git a/src/lua.c b/src/lua.c
index 45ed841..19daf0c 100644
--- a/src/lua.c
+++ b/src/lua.c
@@ -49,7 +49,7 @@ struct ewm_lua_t *ewm_lua_create() {
 }
 
 int ewm_lua_load_script(struct ewm_lua_t *lua, char *script_path) {
-   if (luaL_dofile(lua->state, script_path) != LUA_OK) {
+   if (luaL_dofile(lua->state, script_path) != 0) {
       printf("ewm: script error: %s\n", lua_tostring(lua->state, -1));
       return -1;
    }
@@ -92,3 +92,16 @@ void ewm_lua_register_component(struct ewm_lua_t *lua, char *name, luaL_Reg *fun
    luaL_newmetatable(lua->state, table_name);
    luaL_setfuncs(lua->state, functions, 0);
 }
+
+void luaL_setfuncs (lua_State *L, const luaL_Reg *l, int nup) {
+   luaL_checkstack(L, nup+1, "too many upvalues");
+   for (; l->name != NULL; l++) {  /* fill the table with given functions */
+      int i;
+      lua_pushstring(L, l->name);
+      for (i = 0; i < nup; i++)  /* copy upvalues to the top */
+         lua_pushvalue(L, -(nup+1));
+      lua_pushcclosure(L, l->func, nup);  /* closure with those upvalues */
+      lua_settable(L, -(nup + 3));
+   }
+   lua_pop(L, nup);  /* remove upvalues */
+}
diff --git a/src/lua.h b/src/lua.h
index 4cb8118..390858b 100644
--- a/src/lua.h
+++ b/src/lua.h
@@ -44,4 +44,6 @@ void ewm_lua_push_dsk(struct ewm_lua_t *lua, struct ewm_dsk_t *dsk);
 
 void ewm_lua_register_component(struct ewm_lua_t *lua, char *name, luaL_Reg *functions);
 
+void luaL_setfuncs (lua_State *L, const luaL_Reg *l, int nup);
+
 #endif // LUA_H
diff --git a/src/two.c b/src/two.c
index d7023c0..dcf8655 100644
--- a/src/two.c
+++ b/src/two.c
@@ -497,7 +497,7 @@ static bool ewm_two_poll_event(struct ewm_two_t *two, SDL_Window *window) { // T
                ewm_lua_push_two(two->lua, two);
                lua_pushinteger(two->lua->state, event.key.keysym.mod);
                lua_pushinteger(two->lua->state, event.key.keysym.sym);
-               if (lua_pcall(two->lua->state, 3, 1, 0) != LUA_OK) {
+               if (lua_pcall(two->lua->state, 3, 1, 0) != 0) {
                   printf("two: script error: %s\n", lua_tostring(two->lua->state, -1));
                   return true;
                }
@@ -571,7 +571,7 @@ static bool ewm_two_poll_event(struct ewm_two_t *two, SDL_Window *window) { // T
                ewm_lua_push_two(two->lua, two);
                lua_pushinteger(two->lua->state, event.key.keysym.mod);
                lua_pushinteger(two->lua->state, event.key.keysym.sym);
-               if (lua_pcall(two->lua->state, 3, 1, 0) != LUA_OK) {
+               if (lua_pcall(two->lua->state, 3, 1, 0) != 0) {
                   printf("two: script error: %s\n", lua_tostring(two->lua->state, -1));
                   return true;
                }