Bug 22802 - Build fails when x86_64 support is enabled
Summary: Build fails when x86_64 support is enabled
Alias: None
Product: iOS
Classification: Xamarin
Component: MSBuild ()
Version: 7.9.2.x
Hardware: PC Mac OS
: Normal normal
Target Milestone: Untriaged
Assignee: Bugzilla
Depends on:
Reported: 2014-09-09 19:09 UTC by Paola Villarreal
Modified: 2014-09-11 13:46 UTC (History)
4 users (show)

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

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Description Paola Villarreal 2014-09-09 19:09:29 UTC
When enabling both x86_64 and i386 + x86_64 architecture on "iOS Build" -> Advanced you won't be able to build the app, with this error:  ld: symbol dyld_stub_binding_helper not found, normally in crt1.o/dylib1.o/bundle1.o for architecture x86_64

Build log: https://gist.github.com/pa-w/c61daff48b15934db14d

Xamarin Studio: 5.4 (build 215)
Xcode: Version 6.0 (6A313)

How to reproduce:

1. Open any sample from monotouch-samples (unified_api branch)
2. Go to iOS Build -> Advanced on the project's options.
3. Select either x86_64 or i386 + x86_64 as supported architectures
4. Build
Comment 1 Rolf Bjarne Kvinge [MSFT] 2014-09-10 03:28:44 UTC
> --targetver "3.0"

Try setting Deployment Target to something higher (I believe 5.1.1 is the minimum for 64-bit apps).
Comment 2 Sebastien Pouliot 2014-09-11 13:38:11 UTC
We should issue a MTxxxx error in such cases. The user is asking for something that we (well Apple) can't provide.

@Paola a confirmation would still be nice (in case this hides another issue).
Comment 3 Rolf Bjarne Kvinge [MSFT] 2014-09-11 13:46:30 UTC
We already emit an MT0047 error code, the version Paola is using just doesn't have it yet.