[Vm-dev] Re: [squeak-dev] Using FFI on MacOSX

[Mariano Martinez Peck]

On Tue, Jul 20, 2010 at 10:22 PM, Nicolas Cellier <
nicolas.cellier.aka.nice at gmail.com> wrote:

> Its not obvious for a Mac newbie like me to get FFI running on MacOSX.
> What I (re?) discovered is below. Please correct me if I'm wrong.
>
> To vm maintainers : wouldn't it be a good idea to pass the flag ffiLoad to
> ioLoadModule() instead of relying only on a single global variable whether
> it is a plugin that is requested or not ?
> This way we could have both secured/fast plugin loading and opened FFI (if
> distributed in the bundle). Unless there are other reasons unknown of me...
>
>

Nicolas, for SqueakDBX, I had to write this:

http://www.squeakdbx.org/Compiling%20and%20installing%20OpenDBX

where it says "Problems with Mac OS"

And yes, I agree it would be great to have the correct behavior by default.
Hope John can do that.

Mariano



> Nicolas
>
> -----------------------------------------------------
> Ah, some news!
> In order to track and debug the problem with FFI, I built a VM.
> (uneasy because latest svn xcodeproj is not exactly configured for a one
> click build...).
>
> The problem is that most vm are configured to search for plugin only in
> squeak bundle
> (global variable gSqueakPluginsBuiltInOrLocalOnly in files sqMain.c and
> sqMacUnixExternalPrims.c)
> I guess this is to save time at startup (and batteries for iPhone...)
> And also to get some more secure VM (can't load an invalid plugin from an
> older squeak vm).
>
> Unfortunately, no difference is made between loading a squeak plugin and
> loading a FFI library...
> There is a ffiLoad flag passed to findAndLoadModule() in sqNamedPrims.c
> but not to subfunction ioLoadModule() in sqMacUnixExternalPrims.c... (a
> mistake IMHO)
> So this setting is preventing FFI to work.
>
> What you should do is change this setting:
> - select your squeak vm in the finder.
> - Then choose a menu item like "display package content" (it's a guess, my
> version is configured in french).
> - Then edit the contents/info.plist with a property editor.
> - Then uncheck the box corresponding to SqueakPluginsBuiltInOrLocalOnly and
> save properties
>
> Then FFI should be operational again...
> (But Smallapack may well crash, at least that's what happens here...)
>
> I think I will CC squeak-dev/vm-dev to check If I this is the expected
> solution.
>
> Nicolas
>
>
>
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