[Vm-dev] errors while building a cog development image

[Ben Coman]

On Thu, Apr 27, 2017 at 6:13 AM, Sophie Kaleba <sophie.kaleba at gmail.com>
wrote:

>
> Hi,
>
> I have tried to build a cog dvlpt image using the following instructions :
> $ git clone http://www.github.com/OpenSmalltalk/opensmalltalk-vm
> $ cd opensmalltalk-vm/image
> $ ./buildspurtrunkvmmakerimage.sh
>
> while running the script, i get 2 errors (see attached file):
> - "Context cannot be changed"
> - and then "stackp store failure"
> which prevent me from actually building the image (the last error goes in
> an infinite loop)
>
> Has anyone ever experienced this problem?
>
> I am using Ubuntu 15.10, 64 bits.
>
> Thanks
> Sophie
>
>
>
I tried this myself and noticed it fail when loading "CogCompatability".
If you look down the stack to "MCClassDefintion>>createClass",
the instance variable "name" holds #Context.
Context has only recently been introduced to Squeak.
Previously it needed to be loaded by "CogCompatability".
Now its an error for "CogCompatability" to try redefining this core system
class.

I got it to work by removing "CogCompatability"
from the manifest in BuildSqueakSpurTrunkVMMakerImage.st  ...

    manifest := #(
        ('http://source.squeak.org/FFI' 1 ('FFI-Pools' 'FFI-Kernel'))
  ('http://source.squeak.org/VMMaker'  6
             ('Balloon-Engine-Pools' 'BytecodeSets.spur'  'VMMaker.oscog'
'CogCompatibility'  .....

And then running ./buildspurtrunkvmmakerimage.sh,

cheers -ben
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