--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/cbclang/arm/setjmp.h	Fri Feb 16 20:28:53 2018 +0900
@@ -0,0 +1,29 @@
+
+typedef int __jmp_buf[64] __attribute__((__aligned__ (8)));
+typedef int __sig_atomic_t;
+typedef struct
+  {
+    unsigned long int __val[(1024 / (8 * sizeof (unsigned long int)))];
+  } __sigset_t;
+struct __jmp_buf_tag
+  {
+    __jmp_buf __jmpbuf;
+    int __mask_was_saved;
+    __sigset_t __saved_mask;
+  };
+
+typedef struct __jmp_buf_tag jmp_buf[1];
+extern int setjmp (jmp_buf __env) __attribute__ ((__nothrow__));
+
+extern int __sigsetjmp (struct __jmp_buf_tag __env[1], int __savemask) __attribute__ ((__nothrow__));
+extern int _setjmp (struct __jmp_buf_tag __env[1]) __attribute__ ((__nothrow__));
+
+extern void longjmp (struct __jmp_buf_tag __env[1], int __val)
+     __attribute__ ((__nothrow__)) __attribute__ ((__noreturn__));
+
+extern void _longjmp (struct __jmp_buf_tag __env[1], int __val)
+     __attribute__ ((__nothrow__)) __attribute__ ((__noreturn__));
+typedef struct __jmp_buf_tag sigjmp_buf[1];
+extern void siglongjmp (sigjmp_buf __env, int __val)
+     __attribute__ ((__nothrow__)) __attribute__ ((__noreturn__));
+

--- a/src/makefile-armclang	Fri Feb 16 17:44:49 2018 +0900
+++ b/src/makefile-armclang	Fri Feb 16 20:28:53 2018 +0900
@@ -2,6 +2,19 @@
 QEMU = qemu-system-arm
 
 include makefile.inc
+CC = /usr/local/cbclang/bin/clang
+AS = arm-linux-gnu-as
+LD = arm-linux-gnu-ld
+OBJCOPY = arm-linux-gnu-objcopy
+OBJDUMP = arm-linux-gnu-objdump
+
+# CFLAGS = -march=armv6 -fno-pic -static -fno-builtin -fno-strict-aliasing -Wall -Werror -I. -g -O0
+CFLAGS = -target armv6-arm-none-eabi -fno-pic -static -fno-builtin -fno-strict-aliasing -Wall -I. -I ../cbclang/arm -g -O0
+LDFLAGS = -L.
+# ASFLAGS = -march=armv6
+ASFLAGS = -target armv6-arm-none-eabi
+
+LIBGCC = $(shell $(CC) -print-libgcc-file-name)
 
 # link the libgcc.a for __aeabi_idiv. ARM has no native support for div
 LIBS = $(LIBGCC)