[MonoTouch] Binding to 3rd party frameworks

[Jeff Stedfast]

Hi Andrew,

Sorry to say, but I've not played around with binding third-party
frameworks. I'd have to run this under gdb to have any hope of answering
this question :-(

What I would do in this situation is to start up the app, then switch to a
terminal and attach gdb to the simulator process, type "continue" and wait
for the crash, hoping that the backtrace I get from gdb would provide some
clues.

If that doesn't help you figure it out, please submit a bug report so that
one of us can look into helping you debug this further.

Hope that helps,

Jeff

On Mon, Oct 24, 2011 at 5:57 PM, Andrew Young <andrewdyoung at gmail.com>wrote:

>  Ok. So I've figured out that in order to bind to a 3rd party framework you
> need to add these extra args.
>
> -F{path to frameworks} -framework {framework name}
>
> But now that the app can compile and deploy to the phone, it is crashing
> after I click a button which in turn performs an async web call using
> RestSharp saying:
>
> "Job appears to have crashed: Segmentation fault: 11"
>
> RestSharp seems like a pretty unrelated place in the code to crash in and
> the project doesn't crash when I remove all traces of the 3rd party
> framework. Crash reports seen in Xcode shows a different Exception Type
> varies each time I run it making debugging difficult.
>
> EXC_BAD_ACCESS (SIGSEGV) KERN_PROTECTION_FAILURE  at 0x2fd00fe0
> EXC_CRASH (SIGBUS) 0x00000000, 0x00000000
> EXC_BAD_ACCESS (SIGSEGV) KERN_INVALID_ADDRESS at 0x00000000
>
> Am I missing any extra args here?
>
> On Monday, October 24, 2011 at 11:34, Andrew Young wrote:
>
>  I noticed that the MonoTouch docs only describe how to bind to a static
> lib but not how to bind to a .framework. Is this possible?
>
> On Monday, October 24, 2011 at 11:11, ayoung wrote:
>
>  Jeff,
>
> I think my problem is not knowing how to bind to 3rd party frameworks. The
> static lib is dependent on another .framework that isn't part of the normal
> frameworks provided by apple. What are the extra args that I need to put in
> for linking?
>
> Also, how would I write bindings against this 3rd party framework? Would it
> be the same?
>
> Andrew.
>
> On Monday, October 24, 2011 at 7:45, Jeff Stedfast [via MonoTouch] wrote:
>
>  Hi Andrew,
>
> I'm not sure where that error is coming from, but it sounds like maybe the
> .a you are linking against is meant only for device. Does the native library
> you bound include i386 symbols?
>
> You can use `file libMyThirdPartyLibrary.a` to find out if it is a
> universal binary with support for multiple architectures (and which archs
> those are).
>
> Jeff
>
> On Fri, Oct 21, 2011 at 7:48 PM, Andrew Young <[hidden email]<http://user/SendEmail.jtp?type=node&node=3933364&i=0>
> > wrote:
>
>  I'm building a static lib in Xcode that links to a 3rd party framework
> (not a native iOS .framework). After creating the bindings and adding it to
> my  MonoTouch proj, I get a "Undefined symbols for architecture i386" from
> mtouch. It is trying to reference a header that belongs to the 3rd party
> framework.
>
> How should I handle this?
>
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