Bug 3620 - monotouch-bindings facebook.dll reference causes compilation linker issue
Summary: monotouch-bindings facebook.dll reference causes compilation linker issue
Alias: None
Product: iOS
Classification: Xamarin
Component: Xamarin.iOS.dll ()
Version: 5.0
Hardware: Macintosh Mac OS
: --- normal
Target Milestone: Untriaged
Assignee: Sebastien Pouliot
Depends on:
Reported: 2012-02-23 17:51 UTC by Al Nyveldt
Modified: 2012-02-24 13:26 UTC (History)
2 users (show)

Is this bug a regression?: ---
Last known good build:

Test project (414.91 KB, application/zip)
2012-02-23 17:56 UTC, Al Nyveldt

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Description Al Nyveldt 2012-02-23 17:51:46 UTC
Create new empty monotouch solution.
Add reference to Facebook.dll
Switch to Release\iPhone
Build All

    mtouch exited with code 1

Go into project options, iPhone Build
Set Linker Options to: Don't Link

    Works fine, but app is over 50mb

Mono 2.10.8
MonoTouch 5.2.5

TestProject attached.

Sorry of this is the wrong place to put this bug report.
Comment 1 Al Nyveldt 2012-02-23 17:56:58 UTC
Created attachment 1414 [details]
Test project
Comment 2 Sebastien Pouliot 2012-02-23 20:43:41 UTC
it's the right place for such report. thanks for taking the time to do so!

When you get errors like this one you can get additional details, inside MonoDevelop, by clicking on the "Build Output" (in the Error List pad). That will give you the full building process that leads to the error.

In this case it seems there's a missing framework (coregraphics) that cause the error. That likely was not found because most applications will be using MonoTouch.CoreGraphics (and that will link the framework). However for a very small app (like an empty solution) this is not the case.

The solution is to add manually the following options:

--gcc_flags "-framework coregraphics"

in the "additional mtouch arguments" in the "iPhone Build" of your "Project Options". You'll need to do this for both Debug, Release configuration.

Let me know if you have issue. In the mean time I'll look at having this fixed properly in the facebook bindings library.
Comment 3 Jeffrey Stedfast 2012-02-24 11:15:06 UTC
Fixed in github
Comment 4 Al Nyveldt 2012-02-24 13:26:09 UTC
Thanks guys.  

Just pulled the latest and gave it a try.

It works great now.