- Add more information about interposing functions using runtime-linking.

From-SVN: r48970

diff --git a/gcc/doc/trouble.texi b/gcc/doc/trouble.texi
index fb6e9832653a4819151b3f2d91609fefe968a77b..09026fe57f0292875441347474fa4dec33904943 100644 (file)
--- a/gcc/doc/trouble.texi
+++ b/gcc/doc/trouble.texi
@@ -312,6 +312,13 @@ application. Applications are not required to use the
 @file{libstdc++.a} library which is not dependent on the symbol
 merging semantics will continue to function correctly.
 
+@item
+An application can interpose its own definition of functions for
+functions invoked by @file{libstdc++.a} with ``runtime-linking''
+enabled on AIX.  To accomplish this the application must be linked
+with ``runtime-linking'' option and the functions explicitly must be
+exported by the application (@option{-Wl,-brtl,-bE:exportfile}).
+
 @item
 AIX on the RS/6000 provides support (NLS) for environments outside of
 the United States.  Compilers and assemblers use NLS to support