Re: Patch to update libtool in GCC and Src trees

[Paolo Bonzini <paolo dot bonzini at lu dot unisi dot ch>]

> (1) That's a fairly major change

Agreed.

> (2) Even if libtool supports building shared libraries on platform X, 
> newlib's support for shared is deliberately limited to just i*86-linux. 
> Unless you want to change /that/ too, you'll need to implement some 
> mechanism of completely *disabling* --enable-shared for all but 
> i*86-linux, while still defaulting to --enable-shared --enable-static on 
> linux.

case "$target" in
  i*86-*-linux*) ;;
  *) enable_shared=no ;;
esac

Paolo

> (3) What does Jeff J. think about this?

Of course he has to make the final call.

> (1) make the Makefile.am changes I detailed (all 75 or only 15)
> (2) modify the 15 configure.in's with
>     (a) _LT_DECL_SED outside the existing 'if' -- /if/ that works

If it works, I would very much prefer that, because running useless 
libtool tests is not the best thing to do (especially given the time it 
takes).

>     (b) or unconditionally call LT_INIT like I did, but also add
>         AC_NO_EXECUTABLES
> (3) re-aclocal, re-automake, re-autoconf yadda yadda

There's another possibility, actually, which is to import *the libtool 
tree* in the gcc/src tree from upstream and build it as a target module. 
 Then, instead of having each library build its own libtool, use the 
common one.

I wonder if this is not a much much better idea.  If I have time, I may 
tinker with it too...

Paolo