Re: HELP : Error while building gnumach

[David Michael]

On Mon, Oct 13, 2014 at 1:57 AM, Thomas Schwinge
<thomas@codesourcery.com> wrote:
> Hi!
>
> On Sun, 12 Oct 2014 23:35:41 +0530, vibi sreenivasan <mail.vibi@gmail.com> 
> wrote:
>> I am trying to build gnumach from git repo as per the instructions in
>> https://www.gnu.org/software/hurd/microkernel/mach/gnumach/building.html
>
>> [...]
>> checking for i686-unknown-linux-gnu-mig... no
>> checking for mig... no
>> configure: error: The MiG generator is required to build GNU Mach
>>
>>
>> But link says that after configure, we have to install headers & then
>> compile mig.
>>
>> Please let me know what  i am doing wrong.
>
> This is due to:
>
>     commit b28e05e203e0739fa5db59c5af378b29eea7a232
>     Author: Samuel Thibault <samuel.thibault@ens-lyon.org>
>     Date:   Fri Apr 25 20:39:23 2014 +0200
>
>         Make sure mig is available
>
>         * configure.ac (MIG): Error out if MiG was not found.
>
> We either have to update the instructions (first configure with »MIG=:«
> (untested), then have to re-configure once MIG has been built), or revert
> that commit.

I've been using this configure command to install headers:

    ./configure CC='i686-pc-gnu-gcc -nostdlib' MIG=i686-pc-gnu-mig ...

The configure script tries and fails to create executables before
glibc is built, hence the "-nostdlib".  It seems to be hard-coded to
abort if MIG=:, but it doesn't look like it uses its value otherwise
for installing the headers.

Thanks.

David