diff --git a/src/build/libroot/misc.cpp b/src/build/libroot/misc.cpp
index 52c74f6f08..754e8115e8 100644
--- a/src/build/libroot/misc.cpp
+++ b/src/build/libroot/misc.cpp
@@ -69,3 +69,14 @@ snooze_until(bigtime_t time, int timeBase)
 {
 	return snooze(time - system_time());
 }
+
+
+#ifdef __linux__
+// Linux is the only system out there to not have this...
+int mergesort(void* base, size_t count, size_t size,
+	int (*compare)(const void *, const void *))
+{
+	qsort(base, count, size, compare);
+	return 0;
+}
+#endif