Really define, not undefine the crash statement...

libc/sysdeps/linux/vax/bits/uClibc_arch_features.h

@@ -9,7 +9,7 @@
 
 
 /* instruction used when calling abort() to kill yourself */
-#undef __UCLIBC_ABORT_INSTRUCTION__	"halt"
+#define __UCLIBC_ABORT_INSTRUCTION__	"halt"
 
 /* can your target use syscall6() for mmap ? */
 #define __UCLIBC_MMAP_HAS_6_ARGS__