Bug 12171 - xbuild: MSBuild Inline Tasks are not supported
Summary: xbuild: MSBuild Inline Tasks are not supported
Alias: None
Product: Tools
Classification: Mono
Component: xbuild ()
Version: unspecified
Hardware: Macintosh Mac OS
: --- enhancement
Target Milestone: ---
Assignee: Bugzilla
Depends on:
Reported: 2013-05-08 15:58 UTC by Grant Macklem
Modified: 2018-03-15 10:40 UTC (History)
9 users (show)

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

Simple app that fails on Mac Xamarin Studio (10.28 KB, application/x-zip-compressed)
2013-05-08 15:58 UTC, Grant Macklem

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Description Grant Macklem 2013-05-08 15:58:54 UTC
Created attachment 3937 [details]
Simple app that fails on Mac Xamarin Studio

I'm using Xamarin Studio 4.0.4 and Xamarin Android 4.6.4.  When I try to build the attached project, it works fine with Visual Studio or Xamarin Studio on Windows.  However, it fails with Xamarin Studio on the Mac saying: Error initializing task FileCreatedToday: Not registered task FileCreatedToday.  Other similar bugs I've found refer to using ProjectGroup (4092, resolved) or ItemGroup (1862).  But this problem is outside of the PropertyGroup and ItemGroup elements.  Bug 6754 sounds similiar, but has not been updated for 9 months.
Comment 1 Jonathan Pryor 2013-05-10 13:54:21 UTC
@Grant: On Windows, the .NET MSBuild tool is used. On OS X, Mono's xbuild is used.

xbuild is currently only compatible with MSBuild/.NET 2.0. You're attempting to use Inline Tasks, which are a .NET 3.5 feature, and are not currently supported.
Comment 2 Jonathan Pryor 2013-05-10 13:54:45 UTC
MSDN walkthrough on inline tasks:

Comment 3 Mikayla Hutchinson [MSFT] 2013-05-10 13:57:08 UTC
Just to clarify - xbuild does *some* MSBuild 3.5 and 4.0 features.
Comment 4 TotallyEvil Devs 2013-08-15 00:03:17 UTC
is there an ETA on when inline tasks could be supported by xbuild?
Comment 5 TotallyEvil Devs 2013-08-15 00:07:29 UTC
Here is a sample task that we'd like to implement. 

<UsingTask TaskName="CreateAssemblyMinorVersion" TaskFactory="CodeTaskFactory" AssemblyFile="$(MSBuildToolsPath)\Microsoft.Build.Tasks.v4.0.dll">
      <AssemblyMinorVersion Output="true" />
      <Code Type="Fragment" Langauge="cs">
            AssemblyMinorVersion = (System.DateTime.Now.Year - 2013).ToString();
Comment 6 Mikayla Hutchinson [MSFT] 2013-08-15 01:48:29 UTC
No ETA at this time - we have many bigger fish to fry - but if this is important to you you're welcome to contribute it.
Comment 7 mwesolowski 2017-09-28 14:28:59 UTC
Are there any plans to fix this as XS is being deprecated?
Comment 8 Marek Safar 2018-03-15 10:40:05 UTC
We deprecated xbuild and recommend using msbuild instead. Switching to msbuild will also most likely resolve the issue you reported.