Re: [PATCH 1/9] isar-bootstrap: Add routin to determine host arch

[Alexander Smirnov <asmirnov@ilbers.de>]

Hi Henning,

> Am Wed, 13 Jun 2018 15:07:59 +0200
> schrieb Alexander Smirnov <asmirnov@ilbers.de>:
> 
> > This method will be used to distinguish host and target bootstraps.
> > The standard python platform module is not robust here, because it
> > provides the architecture label from kernel. For example running
> > platfotm.machine() on Fedora kernel will return 'x86_64', what is
> > invalid specificator for Debian systems.
> > 
> > Signed-off-by: Alexander Smirnov <asmirnov@ilbers.de>
> > ---
> >  meta/classes/isar-bootstrap-helper.bbclass | 9 +++++++++
> >  1 file changed, 9 insertions(+)
> > 
> > diff --git a/meta/classes/isar-bootstrap-helper.bbclass
> > b/meta/classes/isar-bootstrap-helper.bbclass index 3c10fc7..2598ea3
> > 100644 --- a/meta/classes/isar-bootstrap-helper.bbclass
> > +++ b/meta/classes/isar-bootstrap-helper.bbclass
> > @@ -14,6 +14,15 @@ def reverse_bb_array(d, varname):
> >      array = reversed(array.split())
> >      return " ".join(i for i in array)
> >  
> > +python () {
> > +    import subprocess
> > +    host_arch = subprocess.Popen("/usr/bin/dpkg
> > --print-architecture",
> > +                                 shell=True,
> > +                                 stdout=subprocess.PIPE
> > +                                ).stdout.read().decode('utf-8').strip()
> > +    d.setVar("HOST_ARCH", host_arch);
> > +}
> 
> Consider not using an absolute path. That defeats the magic of PATH.

I agree with you here, but btw, do you (or probably somebody else) know how to workaround this in
python subprocess? An attempt to run just 'dpkg' fails with the error:
command not found.

Alex

> Henning
> 
> > +
> >  setup_root_file_system() {
> >      CLEAN=""
> >      FSTAB=""
>