Re-support TUI

Makefile

@@ -1,5 +1,5 @@
 CC=gcc
-CFLAGS=-I/usr/include/SDL2
+CFLAGS=-I/usr/include/SDL2 -Wall -Werror -std=gnu99
 LDFLAGS=-lSDL2 -lSDL2_image
 
 all: icsim controls
@@ -8,10 +8,10 @@ icsim: icsim.o lib.o
 	$(CC) $(CFLAGS) -o icsim icsim.c lib.o $(LDFLAGS)
 
 controls: controls.o
-	$(CC) $(CFLAGS) -o controls controls.c $(LDFLAGS)
+	$(CC) $(CFLAGS) -o controls controls.c $(LDFLAGS) -lpthread
 
 lib.o:
-	$(CC) lib.c
+	$(CC) -c lib.c
 
 clean:
-	rm -rf icsim controls icsim.o controls.o
+	rm -rf icsim controls icsim.o controls.o lib.o

config.h

@@ -0,0 +1,8 @@
+#ifndef CONFIG_H
+#define CONFIG_H
+
+#ifndef DISABLE_SDL
+#define DISABLE_SDL 0
+#endif
+
+#endif // CONFIG_H