Index: uspace/Makefile.common
===================================================================
--- uspace/Makefile.common	(revision a99330e895a4dda435b60de880a00bc40762016a)
+++ uspace/Makefile.common	(revision 83fd0d7575baf6521c4b443603485f0c5b718592)
@@ -217,2 +217,8 @@
 	makedepend -f - -- $(DEPEND_DEFS) $(CFLAGS) -- $(SOURCES) > $@ 2> /dev/null
 	-[ -f $(DEPEND_PREV) ] && diff -q $(DEPEND_PREV) $@ && mv -f $(DEPEND_PREV) $@
+
+##
+# This explicit dependecy of the output binary on the object files seems to be
+# necessary to prevent parallel build failures (GNU make bug #26893 ???).
+$(OUTPUT): $(OBJECTS)
+