Update

kernel/GNUmakefile

@@ -37,7 +37,7 @@ LDFLAGS ?=
 
 # Internal C flags that should not be changed by the user.
 override CFLAGS +=       \
-    -std=c11             \
+    -std=gnu11           \
     -ffreestanding       \
     -fno-stack-protector \
     -fno-stack-check     \

kernel/kernel.c

@@ -13,7 +13,7 @@ static volatile struct limine_terminal_request terminal_request = {
 
 static void done(void) {
     for (;;) {
-        __asm__("hlt");
+        asm ("hlt");
     }
 }