Bug 57068 - Error: linker command failed with exit code 1
Summary: Error: linker command failed with exit code 1
Status: RESOLVED INVALID
Alias: None
Product: iOS
Classification: Xamarin
Component: General ()
Version: XI 10.10 (d15-2)
Hardware: PC Mac OS
: --- normal
Target Milestone: Future Cycle (TBD)
Assignee: Bugzilla
URL:
Depends on:
Blocks:
 
Reported: 2017-06-01 19:10 UTC by nazar
Modified: 2017-06-08 08:47 UTC (History)
6 users (show)

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


Attachments
Test project (47.91 KB, application/zip)
2017-06-01 19:10 UTC, nazar
Details


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Status:
RESOLVED INVALID

Description nazar 2017-06-01 19:10:14 UTC
Created attachment 22631 [details]
Test project

So I've tried to create the bare binding project, to reproduce the issue with generating interfaces, and faced the following issues:

- clang Error: linker command failed with exit code 1 (use -v to see invocation) (TestProjectConsumer)
- MTOUCH: Error MT5216: Native linking failed for '/Users/nazar/Documents/scichart_root/TestProjectBindingLib/TestProjectConsumer/obj/iPhone/Debug/device-builds/iphone9.4-10.3.1/mtouch-cache/arm64/libTestProjectBindingLib.dll.dylib'. Please file a bug report at http://bugzilla.xamarin.com (MT5216) (TestProjectConsumer)

Please see attached projects and system details below.

Hopefully, you can help us as soon as possible 

-------------------
System details

Visual Studio Community 2017 for Mac
Version 7.0.1 (build 24)
Installation UUID: bcd7446a-2da8-46e3-a77f-108755216a5a
Runtime:
	Mono 5.0.1.1 (2017-02/5077205) (64-bit)
	GTK+ 2.24.23 (Raleigh theme)

	Package version: 500010001

NuGet
Version: 4.0.0.2323

.NET Core
Runtime: Not installed
SDK: Not installed
MSBuild SDKs: /Library/Frameworks/Mono.framework/Versions/5.0.1/lib/mono/msbuild/15.0/bin/Sdks

Xamarin.Profiler
'/Applications/Xamarin Profiler.app' not found

Apple Developer Tools
Xcode 8.3.2 (12175)
Build 8E2002

Xamarin.Android
Version: 7.3.1.2 (Visual Studio Community)
Android SDK: /Users/nazar/Library/Android/sdk
	Supported Android versions:
		7.1 (API level 25)

SDK Tools Version: 26.0.1
SDK Platform Tools Version: 25.0.5
SDK Build Tools Version: 25.0.2

Java SDK: /usr
java version "1.8.0_131"
Java(TM) SE Runtime Environment (build 1.8.0_131-b11)
Java HotSpot(TM) 64-Bit Server VM (build 25.131-b11, mixed mode)

Android Designer EPL code available here:
https://github.com/xamarin/AndroidDesigner.EPL

Xamarin.iOS
Version: 10.10.0.36 (Visual Studio Community)
Hash: d2270eec
Branch: d15-2
Build date: 2017-05-22 16:30:53-0400

Xamarin.Mac
Xamarin.Mac not installed. Can't find /Library/Frameworks/Xamarin.Mac.framework/Versions/Current/Version.

Xamarin Inspector
Not Installed

Build Information
Release ID: 700010024
Git revision: 7ab1ca2ced6f584e56b7a0d4d321d00775cd95c9
Build date: 2017-05-19 05:44:51-04
Xamarin addins: 08d17158f3365beee5e60f67999e607cce4b3f93
Build lane: monodevelop-lion-d15-2

Operating System
Mac OS X 10.12.5
Darwin 16.6.0 Darwin Kernel Version 16.6.0
    Fri Apr 14 16:21:16 PDT 2017
    root:xnu-3789.60.24~6/RELEASE_X86_64 x86_64
Comment 1 nazar 2017-06-07 08:41:28 UTC
Are there any ideas what am I doing wrong?
Comment 2 Manuel de la Peña [MSFT] 2017-06-07 10:28:54 UTC
Adding @alex in cc since he is a good point of contact for bindings.
Comment 3 Alex Soto [MSFT] 2017-06-07 15:22:44 UTC
The issue is that it can't load the ObjectBuilder class because it does not exist in the native library, this happens because the library wasn't built correctly

>    Undefined symbols for architecture arm64:
>      "_OBJC_CLASS_$_ObjectBuilder", referenced from:
>         -u command line option
>    ld: symbol(s) not found for architecture arm64
>    clang : error : linker command failed with exit code 1 (use -v to see invocation)

You can see what it is in the library using nm

> TestProject.framework nm -Umo TestProject
> TestProject: 0000000000007c98 (__TEXT,__text) non-external -[Interface isInterface]
> TestProject: 0000000000007cc8 (__TEXT,__text) non-external -[Interface setIsInterface:]
> TestProject: 0000000000008500 (__DATA,__objc_data) external _OBJC_CLASS_$_Interface
> TestProject: 00000000000084d0 (__DATA,__objc_ivar) non-external (was a private external) _OBJC_IVAR_$_Interface.isInterface
> TestProject: 00000000000084d8 (__DATA,__objc_data) external _OBJC_METACLASS_$_Interface
> TestProject: 0000000000007fa8 (__TEXT,__const) external _TestProjectVersionNumber
> TestProject: 0000000000007f78 (__TEXT,__const) external _TestProjectVersionString

I think this is happening because while ObjectBuilder is declared in a header, it lacks the implementation.
Comment 4 nazar 2017-06-08 08:47:46 UTC
Hi Alex,

You are definitely right, I was sure that it's there.

Thanks for pointing me and now I created the ticket (https://bugzilla.xamarin.com/show_bug.cgi?id=57268) with an essential problem for us, could you take a look? 

Thanks in advance.