Index: head/sys/arm/arm/machdep.c
===================================================================
--- head/sys/arm/arm/machdep.c
+++ head/sys/arm/arm/machdep.c
@@ -76,7 +76,9 @@
 #include <sys/pcpu.h>
 #include <sys/ptrace.h>
 #include <sys/reboot.h>
+#if defined(LINUX_BOOT_ABI)
 #include <sys/boot.h>
+#endif
 #include <sys/rwlock.h>
 #include <sys/sched.h>
 #include <sys/signalvar.h>