1 files changed, 2 insertions, 0 deletions
diff --git a/README b/README
index 0e55e7c9e3..c52c7f4986 100644
--- a/README
+++ b/README
@@ -149,6 +149,8 @@ Installation
     If you have GDBM available and want it instead of NDBM, say -DHAS_GDBM.
     C's that don't try to restore registers on longjmp() may need -DJMPCLOBBER.
 	(Try this if you get random glitches.)
+    If you get duplicates upon linking for malloc et al, say -DHIDEMYMALLOC.
+    Turn on support for 64-bit integers (long longs) with -DQUAD.
 
 5)  make test