Re: PATCH: Re: Partial symbol export vs --export-dynamic

["H . J . Lu" <hjl at lucon dot org>]

On Mon, Jun 18, 2001 at 05:07:26PM +0100, Nick Clifton wrote:
> HI H.J.
> 
> > It turned out it was quite easy to do. Here is a patch. I just
> > expanded the symbol versioning to executables. You can use
> > 
> > # gcc -Wl,-export-dynamic,--version-script,version.map ...
> > 
> > You can use the version-script to control what you want to export. It
> > supports regular expression, C++ symbol, Java, ... among other
> > things.
> 
> Well that looks very neat.  Please could you update the documentation
> to mention this new behavior. 
> 

How about this patch?


H.J.
----
2001-06-18  H.J. Lu  <hjl@gnu.org>

	* ld.texinfo (-E, --export-dynamic): Mention --version-script.
	(--version-script): Mention the language support.

Index: ld.texinfo
===================================================================
RCS file: /work/cvs/gnu/binutils/ld/ld.texinfo,v
retrieving revision 1.20
diff -u -p -r1.20 ld.texinfo
--- ld.texinfo	2001/05/23 18:36:06	1.20
+++ ld.texinfo	2001/06/18 18:51:54
@@ -444,6 +444,10 @@ back to the symbols defined by the progr
 dynamic object, then you will probably need to use this option when
 linking the program itself.
 
+You can also use the version script to control what symbols should
+be added to the dynamic symbol table if the output format supports it.
+See the description of @samp{--version-script} in @ref{VERSION}.
+
 @cindex big-endian objects
 @cindex endianness
 @kindex -EB
@@ -3536,6 +3540,17 @@ If you wish to bind a reference to a spe
 within the shared library, you can use the aliases of convenience
 (i.e. @samp{old_foo}), or you can use the @samp{.symver} directive to
 specifically bind to an external version of the function in question.
+
+You can also specify the language in the version script:
+
+@smallexample
+VERSION extern "lang" @{ version-script-commands @}
+@end smallexample
+
+The supported @samp{lang}s are @samp{C}, @samp{C++}, and @samp{Java}. 
+The linker will iterate over the list of symbols at the link time and
+demangle them according to @samp{lang} before matching them to the
+patterns specified in @samp{version-script-commands}.
 
 @node Expressions
 @section Expressions in Linker Scripts