Document recent make changes
diff --git a/ChangeLog b/ChangeLog
index 46ef674..c750144 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -31,6 +31,9 @@
    * Add missing extern "C" guard in aesni.h (reported by amir zamani).
 
 Changes
+   * Adjusting/overriding CFLAGS and LDFLAGS with the make build syste is now
+     more flexible (warning: OFLAGS is not used any more) (see the README)
+     (contributed by Alon Bar-Lev).
    * ssl_set_own_cert() now longers calls pk_check_pair() since the
      performance impact was bad for some users (this was introduced in 1.3.10).
    * Move from SHA-1 to SHA-256 in example programs using signatures