$NetBSD$

--- src/runtime/include/cache-flush.h.orig
+++ src/runtime/include/cache-flush.h
@@ -40,7 +40,7 @@
 extern FlushICache (void *addr, int nbytes);
 
 
-#elif (defined(TARGET_PPC) && (defined(OPSYS_LINUX) || defined(OPSYS_DARWIN) ))
+#elif (defined(TARGET_PPC) && (defined(OPSYS_LINUX) || defined(OPSYS_DARWIN) || defined(OPSYS_NETBSD)))
 extern FlushICache (void *addr, int nbytes);
 
 #else
