document --enable-largefile

diff --git a/README b/README
index babd092f08ebf5a65ade01aa32dcfdab3071aa98..ba269fd57607c68e610f7a38b6623bbb46d05c36 100644 (file)
--- a/README
+++ b/README
@@ -307,6 +307,10 @@ Building
        To build libbind (the BIND 8 resolver library), specify
        "--enable-libbind" on the configure command line.
 
+       On some platforms it is necessary to explictly request large
+       file support to handle files bigger than 2GB.  This can be
+       done by "--enable-largefile" on the configure command line.
+
        On some platforms, BIND 9 can be built with multithreading
        support, allowing it to take advantage of multiple CPUs.
        You can specify whether to build a multithreaded BIND 9