Hi Henning,

On Thu, 2017-12-14 at 14:42 +0100, Henning Schild wrote:
> Am Wed, 13 Dec 2017 17:07:09 +0100
> schrieb "[ext] claudius.heine.ext@siemens.com"
> <claudius.heine.ext@siemens.com>:
> 
> > From: Claudius Heine <ch@denx.de>
> > 
> > Hi,
> > 
> > this patch is to start the discussion about how to implement the
> > debian depends.
> > 
> > Instead of going the just 'echo ${DEBIAN_DEPENDS}' route, I chose
> > to
> > be backwards compatible. Another reason for this is also for the
> > possible next feature where ISAR 'DEPENDS' or 'RDEPENDS' will be
> > converted to the package specific 'DEBIAN_DEPENDS'.
> 
> With the current nature of dpkg-raw DEPENDS and RDEPENDS make no
> sense.
> Maybe some day the class will do more than just wrap stuff in a
> package, but at the moment i do not see that coming.
> And even if that ever happened the class could take care of turning
> the
> bitbake-list (R)DEPENDS into a Debian comma-seperated list.
> 
> I tried your code in a bash (not in Isar/bitbake etc.) and i got a
> few
> more commas that i would have expected.
> 
> 'libc, (>=, 2.16)', 'tar, |, bsdtar', systemd
> 
> Shell code is nasty, i think i do not even want to know why it worked
> for you or wether it would work in Isar with my build env.

I works in here because the ${DEBIAN_DEPENDS} is inserted by bitbake
before any shell is executed. So in shell code for this example looks
like this:

    DEBIAN_DEPS="$(for i in 'libc (>= 2.16)' 'tar | bsdtar' systemd;do
echo $i,;done|tr '\n' ' '|sed 's/, *$//')"

If you try that out with your shell:

    $ echo "$(for i in 'libc (>= 2.16)' 'tar | bsdtar' systemd;do echo
$i,;done|tr '\n' ' '|sed 's/, *$//')"
    libc (>= 2.16), tar | bsdtar, systemd

It works correctly just like in bitbake.

DEBIAN_DEPENDS is not a shell variable but a bitbake one.

But I get your point that this is confusing and error-prone. Doing it
with python might be easier.

Cheers,
Claudius

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