[Vm-dev] Problems with Mac VM 5.7 and 5.8 on the command-line

[Eliot Miranda]

On Thu, May 19, 2011 at 5:06 AM, Bert Freudenberg <bert at freudenbergs.de>wrote:

>
>
> On 19.05.2011, at 13:49, Stefan Marr wrote:
>
> >
> > Hi Esteban:
> >
> > I debugged a bit what is going on.
> >
> > The main issue seems to be that the VM changes its working directory.
> > The reason seems to be that the loading mechanism for plugin depends on
> the wrong directory.
> > At least, disabling the chdir leads to warnings like this: squeak: could
> not load plugin `FilePlugin'.
> >
> > I don't really understand why that is the way to go. Actually I would
> expect that the application respects the current working directory and uses
> it as its own. At least as a command-line user, that's my expectation.
>
> But a Mac OS X .app bundle is not a command line application. It expects
> the Resources directory to be the current directory. That is so that you can
> use relative paths to specify resources. I guess this is just a convention,
> though.
>

I don't think so.  If one launches a .app with the open command (and indeed
by clicking on a document which opens its associated app, or clicking on the
app) then the current working directory is the root directory /.  One can
find the Resources directory from the path of the executable which will be
in Application.app/Contents/MacOS/theexe and so the Resources directory is
parent(fullpath(theexe))/Resources.


> I would expect more things to break if you change this. E.g., the
> SqueakImageName in Info.plist needs to be given as a relative path so that
> an "all-in-one" bundle works everywhere. It is relative to the Resources
> directory. I'm not sure if the implementation relies on the cwd or if it
> actually expands the path relative to Resources.
>

I think this can be fixed.  Just yesterday with the Newspeak VM I'm working
on I found that the chdir breaks a particular use of mercurial.  So at least
in the Newspeak VM the chdir has been eliminated.


>
> Removing the chdir seems like a good idea, I'm just saying that there may
> be more places relying on cwd == Resources.
>

Agreed on both.


>
> - Bert -
>
> > So, the question is, how to fix it?
> >
> > On the upside, removing chdir seems to restore the expected behavior: at
> least it parses the arguments fine and accepts the image after a -headless
> even with a relative path. So, all necessary functionality is there, only
> the plugin loading would need adaptation.
> >
> > Best regards
> > Stefan
> >
> > PS:
> >
> > The code is in sqMacMain.c around line 370:
> >
> > {
> >       // Change working directory, this works under os-x, previous logic
> worked pre os-x 10.4
> >
> >       char target[4097],temp[4097];
> >       getVMPathWithEncoding(target,gCurrentVMEncoding);
> >       sqFilenameFromStringOpen(temp,(sqInt) target, strlen(target));
> >       chdir(temp);
> > }
> >
> >
> >
> >
> > On 19 May 2011, at 01:24, Esteban Lorenzano wrote:
> >
> >>
> >> Hi,
> >> Sorry for the delayed answer.
> >> Yes, there are problems with command line and osx vms. Yes... the cocoa
> versions are experimenting a lot of problems with it (well... more
> specifically, they are different than what users expect, and not all of them
> are present).
> >> I would like to unify the command line between osx, windows and linux
> vms... but I don't know where to start.
> >> If someone can point me in the right direction (which options should be
> present... maybe linux version should rule?), I will add this job to the
> "infinite todo" :)
> >>
> >> cheers,
> >> Esteban
> >>
> >> El 16/05/2011, a las 1:40p.m., Stefan Marr escribió:
> >>
> >>>
> >>> Hi:
> >>>
> >>> On 16 May 2011, at 18:19, Mariano Martinez Peck wrote:
> >>>
> >>>> You have the .surces and .changes properly locacted, haven't you?
>  because otherwise you have a nice popup waiting for you ;)  but your are
> headless hheheh
> >>>
> >>> There is always room for me doing something stupid, but since the
> following works just fine with Eliot's Cog build, I assume it is a bug in
> the Mac VMs:
> >>>
> >>> smarr at minerva:~/tmp/pharo$
> /Applications/Cog.app/Contents/MacOS/Croquet -headless
>  ~/tmp/pharo/Pharo-1.2.image HelloWorld
> >>> Hello World!
> >>> HelloWorld
> >>> smarr at minerva:~/tmp/pharo$
> >>>
> >>>
> >>> Bye the way, it would be awesome if there would be a platform
> independent way to produce newlines on the console...
> >>>
> >>>
> >>> Best regards
> >>> Stefan
> >>>
> >>>
> >>> --
> >>> Stefan Marr
> >>> Software Languages Lab
> >>> Vrije Universiteit Brussel
> >>> Pleinlaan 2 / B-1050 Brussels / Belgium
> >>> http://soft.vub.ac.be/~smarr
> >>> Phone: +32 2 629 2974
> >>> Fax:   +32 2 629 3525
> >>>
> >>
> >
> > --
> > Stefan Marr
> > Software Languages Lab
> > Vrije Universiteit Brussel
> > Pleinlaan 2 / B-1050 Brussels / Belgium
> > http://soft.vub.ac.be/~smarr
> > Phone: +32 2 629 2974
> > Fax:   +32 2 629 3525
> >
>
>
>
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