https://bugs.gentoo.org/423813


 device/device.cpp | 1 +
 1 file changed, 1 insertion(+)

--- a/device/device.cpp
+++ b/device/device.cpp
@@ -31,6 +31,7 @@
 
 
 // Includes...
+#include <unistd.h>
 #include "../globaldefs.h"
 #include "errortext.h"
 #include "device.h"