[Mono-dev] Microsoft.Build: The parameter 'FrameworkVersion45Path' was not found for the 'GetFrameworkPath' task

[Robin Neatherway]

Although, as I am running from the F# Interactive, perhaps 4.0 is the
correct place to load these DLLs from? There doesn't seem to be a way to
specify which DLL should be preferred in this case. I will try compiling a
small example with TargetFramework 4.5 and see if that works.


On Thu, Jan 31, 2013 at 4:48 PM, Robin Neatherway <
robin.neatherway at gmail.com> wrote:

> Hi,
>
> The small script I gave at the top is sufficient to observe the behaviour.
> If you put it in a file, say "Script.fsx" and run it with `fsharpi
> Script.fsx`, you will be able to reproduce the behaviour. Likewise for the
> GetFrameworkPath fragment (once the DLLs have been loaded with #r). Would a
> compilable version be more helpful?
>
> I had another look in my lib/mono/4.5 directory and found that the
> Microsoft.Build.* DLLs there are symlinks to the gac 4.0 versions:
>
>   lib/mono/4.5 $ ls -l Microsoft.Build.*
> lrwxrwxrwx 1   68 Jan 30 18:50 Microsoft.Build.dll ->
> ../gac/Microsoft.Build/4.0.0.0__b03f5f7f11d50a3a/Microsoft.Build.dll*
> lrwxrwxrwx 1   82 Jan 30 18:50 Microsoft.Build.Engine.dll ->
> ../gac/Microsoft.Build.Engine/4.0.0.0__b03f5f7f11d50a3a/Microsoft.Build.Engine.dll*
> lrwxrwxrwx 1   88 Jan 30 18:50 Microsoft.Build.Framework.dll ->
> ../gac/Microsoft.Build.Framework/4.0.0.0__b03f5f7f11d50a3a/Microsoft.Build.Framework.dll*
> lrwxrwxrwx 1   90 Jan 30 19:26 Microsoft.Build.Tasks.v4.0.dll ->
> ../gac/Microsoft.Build.Tasks.v4.0/4.0.0.0__b03f5f7f11d50a3a/Microsoft.Build.Tasks.v4.0.dll*
> lrwxrwxrwx 1   98 Jan 30 18:50 Microsoft.Build.Utilities.v4.0.dll ->
> ../gac/Microsoft.Build.Utilities.v4.0/4.0.0.0__b03f5f7f11d50a3a/Microsoft.Build.Utilities.v4.0.dll*
>
> However the DLLs in lib/mono/4.0 are not symlinks, they are normal files.
> The ones in the GAC are the same as those that are in class/lib/net_4_5/
> after building, while the other files in lib/mono/4.0 are the same as those
> in class/lib/net_4_0
>
> Perhaps this is the source of the problem.
>
> Robin
>
>
> On Thu, Jan 31, 2013 at 3:29 PM, Marek Safar <marek.safar at gmail.com>wrote:
>
>> Hi,
>>
>> This is most likely Mono bug in how we load Task libraries. It'll load
>> the version from folder where Microsoft.Common.targets is which is
>> incorrect in your case because it's 4.0 version and not 4.5. Some kind of
>> self contained sample how F# is using Microsoft.Build* would be useful.
>>
>> Marek
>>
>>  I'm trying to execute the ResolveAssemblyReferences task using the
>>> Microsoft.Build namespace. This (F#) project builds nicely from the command
>>> line using xbuild, so the logic is capable. The project file can be found
>>> here:
>>> https://github.com/fsharp/fsharpbinding/blob/master/FSharp.AutoComplete/FSharp.AutoComplete.fsproj and
>>> has TargetFrameworkVersion set to 4.5. If I change TargetFrameworkVersion
>>> to 4.0, it works.
>>>
>>> I downloaded mono from github and am running the latest version: Mono
>>> JIT compiler version 3.0.4 (master/e5fba9d Wed Jan 30 18:38:48 GMT 2013). I
>>> also tried with 3.0.3, with the same effect.
>>>
>>> The following fsi script is what I am using:
>>>
>>> #r "Microsoft.Build.Engine"
>>> #r "Microsoft.Build.Framework"
>>> #r "Microsoft.Build.Tasks.v4.0"
>>> open Microsoft.Build.BuildEngine
>>> open Microsoft.Build.Framework
>>> open Microsoft.Build.Tasks
>>>
>>> let p = new Project()
>>> let cl = new ConsoleLogger(LoggerVerbosity.Diagnostic)
>>> p.ParentEngine.RegisterLogger(cl)
>>> p.Load("FSharp.AutoComplete.fsproj")
>>>
>>> p.Build([|"ResolveAssemblyReferences"|])
>>>
>>> which results in:
>>>
>>> <path>/FSharp.AutoComplete.fsproj (ResolveAssemblyReferences) ->
>>> /home/scratch/local_mono/lib/mono/4.0/Microsoft.Common.targets
>>> (GetFrameworkPaths target) ->
>>>
>>> /home/scratch/local_mono/lib/mono/4.0/Microsoft.Common.targets: error :
>>> Error executing task GetFrameworkPath: The parameter
>>> 'FrameworkVersion45Path' was not found for the 'GetFrameworkPath' task.
>>>
>>> I found that the framework path for 4.5 doesn't seem to be defined:
>>>
>>> let gfp = GetFrameworkPath()
>>> gfp.FrameworkVersion45Path
>>>
>>> error FS0039: The field, constructor or member 'FrameworkVersion45Path'
>>> is not defined
>>>
>>> Although in
>>> mcs/class/Microsoft.Build.Tasks/Microsoft.Build.Tasks/GetFrameworkPath.cs
>>> has a #if NET_4_5 around FrameworkVersion45Path, and .NET 4.5 is definitely
>>> enabled in the configure script, and I have a fully populated lib/mono/4.5
>>> directory.
>>>
>>> I also found that the Engine toolsets do not include 4.5. I tried adding
>>> it manually, but this didn't help.
>>>
>>> I think this is a bug, and would appreciate any hints in tracking it
>>> down.
>>>
>>> Thanks,
>>> Robin Neatherway
>>>
>>>
>>> _______________________________________________
>>> Mono-devel-list mailing list
>>> Mono-devel-list at lists.ximian.com
>>> http://lists.ximian.com/mailman/listinfo/mono-devel-list
>>>
>>>
>>
>
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