- Addendum 1.0, whose definition is available from <ulink
- url="http://haskell.org/"><literal>http://haskell.org/</literal></ulink >.
- The FFI support in GHC diverges from the Addendum in the following ways:
- </para>
+ Addendum 1.0, whose definition is available from <ulink url="http://haskell.org/"><literal>http://haskell.org/</literal></ulink>.</para>
+
+ <para>To enable FFI support in GHC, give the <option>-fffi</option><indexterm><primary><option>-fffi</option></primary>
+ </indexterm>flag, or
+the <option>-fglasgow-exts</option><indexterm><primary><option>-fglasgow-exts</option></primary>
+ </indexterm> flag which implies <option>-fffi</option>
+.</para>
+
+ <para>The FFI support in GHC diverges from the Addendum in the following ways:</para>