Switch to side-by-side view

--- a/src/mk/localdefs.in
+++ b/src/mk/localdefs.in
@@ -14,6 +14,7 @@
 X_PRE_LIBS=@X_PRE_LIBS@
 X_LIBS=@X_LIBS@
 X_EXTRA_LIBS=@X_EXTRA_LIBS@
+X_LIBX11=@X_LIBX11@
 
 prefix = @prefix@
 exec_prefix = @exec_prefix@