[Bug libstdc++/103866] AM_PROG_LIBTOOL not compatible with GCC_NO_EXECUTABLES

[redi at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=103866

--- Comment #7 from Jonathan Wakely <redi at gcc dot gnu.org> ---
(In reply to Nicolas Noble from comment #6)
> While a bit tangential from the narrow topic of this bug, it may be
> noteworthy that I just tried using the --with-newlib kludge here, and
> compilation still fails, with something new:
> 
> checking for the value of EOF... configure: error: computing EOF failed



Yes, I have a simple patch for that.


> 
> Checking the logs, this fails because it can't find stdio.h. Meaning the
> --with-newlib kludge isn't an actually valid method towards actual bare
> metal, and needs something a bit more fleshed out?


Yes, and even with that fixed, more checks for $is_hosted are needed for
stdint.h types. I have a patch for that too, but I'm not happy with it yet.

The same problems with stdio.h are listed in the other bug, but the fixes
suggested there are completely wrong, and the abuse is completely unacceptable.