Re: control of symbols exported by shared libraries

[Bruno Haible]

Simon Josefsson wrote:
> it appeared to me that a
> preferable approach would be to fix libtool, and I thought that had
> been done.  Joe Orton of RedHat even asked me to use Libtool's
> --export-symbols-regex in GnuTLS, for instance.  I have been using it
> all of my libraries for a long time.  No non-external symbols are
> exported, from what I can tell.  Output below.

You're right. For Linux systems, it has been fixed in revision 1.29 of
libtool/m4/libtool.m4, on 2004-01-07, i.e. since libtool-1.5.2.

Still, this implementation of symbol export control optimizes only the
symbol tables, and has no opportunity to optimize the code, because the
compiler doesn't know which symbols will be exported when it compiles
from .c to .lo.

Bruno