diff -uNr tinyemu-2018-09-23/riscv_machine.c tinyemu-2018-09-23.mod/riscv_machine.c
--- tinyemu-2018-09-23/riscv_machine.c	2018-09-23 15:17:19.000000000 +0300
+++ tinyemu-2018-09-23.mod/riscv_machine.c	2018-10-04 18:07:24.380688074 +0300
@@ -32,6 +32,8 @@
 #include <unistd.h>
 #include <time.h>
 
+#include "host_config.h"
+
 #include "cutils.h"
 #include "iomem.h"
 #include "riscv_cpu.h"
@@ -736,7 +738,7 @@
 #if 0
     {
         FILE *f;
-        f = fopen("/tmp/riscvemu.dtb", "wb");
+        f = fopen(TMP_DIR "/riscvemu.dtb", "wb");
         fwrite(dst, 1, size, f);
         fclose(f);
     }