2010/4/8 Schwab,Wilhelm K <bschwab@anest.ufl.edu>
Laurent,
I was reading a little about Eliot's proposed FPU init changes to FFI and then took another look at your evolving Pharo vm source and I was struck by either: (1) a brilliant (well, fairly clever) workaround to my external library hassles; (2) a completely and totally stupid idea.
You have based the vm on the 3.11-3 sources, so it hopefully fixes the double return defect that has been driving me nuts. My remaining problem is to get the vm to load external libraries. Would a simple plugin to expose dlopen() (and perhaps dlsym() while we're at it) solve the problem? I should then be able to bypass the FFI code that calls dlopen() (I suspect that it's pretty badly broken) by setting the handle of any ailing library by using absolute paths if necessary. From there, I *think* everything will just work.
What do you think?
Well, I'm noob on VM stuff, I've just worked on how to generate VM source for Linux, that's all :) So I cannot tell anything...I have to learn before.
Somewhat related, have you looked at compiling the Alien plugin? The more I look at posts on Alien, the more I wonder whether it will help, as there are suggestions that it is weak on external calls. Still, it would be nice to get it going and look over the tests the boldness that comes from watching them pass having actually done something.
Yes I can compile it, but the VM crashes loudly when trying to use it. This thread has a lot of informations: http://n4.nabble.com/Trying-to-build-alien-plugin-in-linux-tc1562896.html Laurent Laffont
Bill
------------------------------ *From:* pharo-project-bounces@lists.gforge.inria.fr [mailto: pharo-project-bounces@lists.gforge.inria.fr] *On Behalf Of *laurent laffont *Sent:* Thursday, April 08, 2010 7:32 AM *To:* Pharo-project@lists.gforge.inria.fr *Subject:* Re: [Pharo-project] Linux vm: assertions and strategy
I'm totally noob on FFI. Maybe the vm-dev mailing list is more appropriate ? It seems there's actually some problems with it http://n4.nabble.com/forum/Search.jtp?tpl=search-page&node=104410&query=ffi
On my machine, 20/21 FFI unit tests fails...
I haven't been able to build last revision of squeak-vm trunk.
Laurent Laffont
On Thu, Apr 8, 2010 at 1:53 PM, Schwab,Wilhelm K <bschwab@anest.ufl.edu>wrote:
Laurent, all,
If I may jump to conclusions a little, the 3.11-3 vm's changes break the loading of libraries, certainly to the point of being arkane. Beyond that, LinuxODBC is transparent to it, so I am left wondering how it is suppose to work at all??
The RC3 one-click image and vm produce very nice fonts on my Ubuntu laptop, but it retains the FFI/double defect, and from the naming of the plugins, must be based on a pre 3.11-3 vm.
Is the plan to use 3.11-3 for the one-click? If so, we need to do something about external libraries; at a minimum, LinuxODBC should work, whether by fully understanding how to use environment variables, or (as I suspect) getting the dlopen() call to work again.
Another option is to identify the FPU related fixes and apply them to the current one-click vm.
Any preferences? Any success with 3.11-3 and LinuxODBC? I'd be happy to be wrong about this.
Bill
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