Bug 41534 - Unable to build project from command line when specifying an older tools version
Summary: Unable to build project from command line when specifying an older tools version
Alias: None
Product: Tools
Classification: Mono
Component: xbuild ()
Version: 4.4.0 (C7)
Hardware: Macintosh Mac OS
: --- normal
Target Milestone: ---
Assignee: Bugzilla
Depends on:
Reported: 2016-06-06 20:26 UTC by Peter Collins
Modified: 2018-03-15 10:40 UTC (History)
1 user (show)

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

simple console app (3.63 KB, application/zip)
2016-06-06 20:27 UTC, Peter Collins

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Description Peter Collins 2016-06-06 20:26:30 UTC
This came about as part of adding coverage for #41227. I see the following failure when overriding the project's tools version to something older and building via xbuild from mono 4.4.

> Error initializing task Message: Not registered task Message.
Diagnostic build output:

Steps to reproduce:
1. Download the attached project, and attempt to build with one of the following tools versions:
> xbuild /tv:2.0 ConsoleAppTest.sln
> xbuild /tv:3.0 ConsoleAppTest.sln
> xbuild /tv:3.5 ConsoleAppTest.sln

Mono JIT compiler version 4.4.0 (mono-4.4.0-branch-c7-baseline/5995f74 Thu Jun  2 15:13:10 EDT 2016)
Copyright (C) 2002-2014 Novell, Inc, Xamarin Inc and Contributors. www.mono-project.com
	TLS:           normal
	SIGSEGV:       altstack
	Notification:  kqueue
	Architecture:  x86
	Disabled:      none
	Misc:          softdebug 
	LLVM:          yes(3.6.0svn-mono-master/a173357)
	GC:            sgen
Comment 1 Peter Collins 2016-06-06 20:27:02 UTC
Created attachment 16206 [details]
simple console app
Comment 2 Marek Safar 2018-03-15 10:40:04 UTC
We deprecated xbuild and recommend using msbuild instead. Switching to msbuild will also most likely resolve the issue you reported.