Use musl libc

Makefile

@@ -1,7 +1,7 @@
 # LuPI2 Makefile
 
 # Default compiler settings.
-CC?=cc
+CC = musl-gcc
 CFLAGS?=-O2 -std=c99
 LDFLAGS+= -static
 

README.md

@@ -6,7 +6,8 @@ intuitive languages. It has only 6 types, very simple syntax, yet supports many
 Running
 -----
 1. Clone this repository
-2. Get `xxd` utility(usually packaged with vim)
+2. Get musl libc(with musl-gcc wrapper)
+2.5 Get `xxd` utility(usually packaged with vim)
 3. Execute `make build`
 4. You will need to put some OS to `root` directory where you run the binary. For now you can get plan9k at http://cloud.magik6k.net/index.php/s/7jPRAU037dzt8Ga/download
 

src/c/lnative.c

@@ -17,7 +17,9 @@
 #include <ftw.h>
 #include <wchar.h>
 #include <limits.h>
-#include <linux/kd.h>
+/* #include <sys/kd.h> */
+
+#define KIOCSOUND 0x4B2F  /* start sound generation (0 for off) */
 
 /* Enable in lupi.h */
 #ifdef LOGGING