fatal error: gnu/stubs-32.h: No such file

[Gabriel Dos Reis]

On Sun, Jul 7, 2013 at 12:44 PM, Jonathan Wakely <jwakely.gcc@gmail.com> wrote:
> On 7 July 2013 15:00, Bruce Korb <bruce.korb@gmail.com> wrote:
>> On 07/06/13 11:53, Andreas Schwab wrote:
>>>
>>> Bruce Korb <bruce.korb@gmail.com> writes:
>>>
>>>> Why is it that configure worked but stubs-32.h was not found?
>>>
>>>
>>> This is testing the host compiler which doesn't need that file.  You
>>> need to build the target compiler before you can test it.
>>
>>
>> Sorry, I'm still confused.  I had a fresh openSuSE distro and I
>> was trying to build GCC from SVN source.  If doing that requires
>> the installation of 32 bit development package, then I think I
>> am trying to say that configure should go look for the needed 32
>> bit dev package and complain.  I am hoping that the developer
>> responsible for the code trying to include the header would
>> fiddle the configure script.  I confess to trying to avoid that
>> kind of fiddling.
>
> There is no code trying to include the header, GCC doesn't include it
> directly, it is included by glibc's <features.h> which is included by
> other headers GCC uses.
>
> The point is, how do you test for "the needed 32 bit dev package"?
> The only way is to try compiling a program as 32-bit, but that can
> only be done by the target compiler once it's built, because the host
> compiler might not be capable of 32-bit output.

How about not enabling multi lib build by default on targets we now that
will fail anyway?  I have the suspicion this problem is unique to openSUSE,
so we can take care of that.

-- Gaby