Re: g++: unrecognized option `-symbolic'

[Chad Gatesman <chadg at redrose dot net>]

"Martin v. Loewis" wrote:

> > I need to keep overloaded new and delete operators local to a particular
> > shared library (I don't want to export them).  How do I do this?
>
> You can use symbol versioning for that; see the linker documentation
> for details.

I tried including the following in my library:

__asm__("local:.symver __builtin_new_1,__builtin_new@");
__asm__("local:.symver __builtin_vec_new_1,__builtin_vec_new@");
__asm__("local:.symver __builtin_delete_1,__builtin_delete@");


I was trying to stay away from the versioning.  I'm really only interested in
the "local:" directive.  After linking and doing an nm on the library I get:

T __builtin_delete
U __builtin_delete@
T __builtin_new
U __builtin_new@
T __builtin_vec_new
U __builtin_vec_new@

This didn't fix my problem, because the new and delete symbols are still
exported.  I tried specifying a version, but that resulted in a link failer
saying "__builtin_delete@VERS_1.0" is undefined when I tried to link the
library that I'm trying to keep new and delete from being exported from (the
library with the __asm__ lines in it).

Am I doing something wrong?  Or can I not do what I want with this?