This is the mail archive of the
libc-alpha@sources.redhat.com
mailing list for the glibc project.
Re: A patch to add --with-oldest-abi=ABI. [Re: A patch to add --disable-old-version.]
On Sat, Dec 02, 2000 at 10:04:03AM -0800, Ulrich Drepper wrote:
> "H . J . Lu" <hjl@valinux.com> writes:
>
> > 1. res_init is not used for linking. Or
> > 2. res_init is always available.
> >
> > I prefer 1.
>
> Yes, ideally we'd have that. But I do not how to implement it
> correctly. Probably ld should check whether a symbol is defined as a
> default version in the library and if it's not use it.
>
How about this patch?
# objdump --dynamic-sym libc.so.6 | grep res_init
000f01e0 w DF .text 00000078 (GLIBC_2.0) res_init
000f01e0 g DF .text 00000078 GLIBC_2.2 __res_init
H.J.
----
2000-12-02 H.J. Lu <hjl@gnu.org>
* resolv/res_libc.c (res_init): Don't make it default.
Index: resolv/res_libc.c
===================================================================
RCS file: /work/cvs/gnu/glibc/resolv/res_libc.c,v
retrieving revision 1.1.1.2
diff -u -p -r1.1.1.2 res_libc.c
--- resolv/res_libc.c 2000/07/19 22:17:39 1.1.1.2
+++ resolv/res_libc.c 2000/12/02 18:22:12
@@ -84,5 +84,7 @@ res_init(void) {
#if SHLIB_COMPAT(libc, GLIBC_2_0, GLIBC_2_2)
# undef res_init
-weak_alias (__res_init, res_init);
+strong_alias (__res_init, __res_init_weak);
+weak_extern (__res_init_weak);
+compat_symbol (libc, __res_init_weak, res_init, GLIBC_2_0);
#endif