[Libguestfs] [PATCH supermin v2 4/4] init: Debug which libc is in use.

[Richard W.M. Jones]

On Wed, Feb 17, 2016 at 04:59:36PM +0100, Pino Toscano wrote:
> On Wednesday 17 February 2016 14:22:34 Richard W.M. Jones wrote:
> > ---
> >  init/init.c | 9 +++++++++
> >  1 file changed, 9 insertions(+)
> > 
> > diff --git a/init/init.c b/init/init.c
> > index 25d6bc6..38392c4 100644
> > --- a/init/init.c
> > +++ b/init/init.c
> > @@ -94,6 +94,15 @@ main ()
> >    print_uptime ();
> >    fprintf (stderr, "supermin: ext2 mini initrd starting up: "
> >             PACKAGE_VERSION
> > +#if defined(__dietlibc__)
> > +           " dietlibc"
> > +#elif defined(__GLIBC__)
> > +           " glibc"
> 
> This needs to be put as last, as libc implementations that copied the
> glibc headers (such as uclibc) define __GLIBC__...

OK.

> > +#elif defined(__NEWLIB_H__)
> > +           " newlib"
> > +#elif defined(__UCLIBC__)
> > +           " uClibc"
> 
>   #else
>   # error unrecognized libc
> 
> While not having an identification string is not an issue, requiring it
> might ease check whether supermin has actually been tested with a libc.

Unfortunately musl refuses to have such a define.  Bogus explanation
here:

http://www.musl-libc.org/faq.html

Rich.

-- 
Richard Jones, Virtualization Group, Red Hat http://people.redhat.com/~rjones
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