MS Build Task not accepting properties - msbuild

I am trying to build my project using MSbuild. The solution builds perfectly fine if I hardcode the configurations
<MSBuild Projects="%(SolutionsToBuild.Identity)" Properties="Configuration=Debug" ContinueOnError="false"/>
<MSBuild Projects="%(SolutionsToBuild.Identity)" Properties="Configuration=Release" ContinueOnError="false"/>
but if I use batching like this the values are not assigned
<MSBuild Projects="%(SolutionsToBuild.Identity)" Properties="Configuration=%(ConfigList.Identity)" ContinueOnError="false"/>
where ConfigList
<ItemGroup>
<ConfigList Condition=" '#(ConfigList)' == '' and $(Configuration) != '' " Include="$(Configuration.Split(';'))" />
<!-- parse all requested configurations into a list -->
<ConfigList Condition=" '#(ConfigList)' == '' " Include="Debug" />
<!-- if no configurations were specified, default to Debug -->
</ItemGroup>
and Configurations are provided from CLI
msbuild build.proj -p:Configuration="Release;Debug"
Also interestingly I am getting the value in
<Message Text="Build for configuration %(ConfigList.Identity)"/>
Whole Code
<Target Name="BuildApplication">
<ItemGroup>
<ConfigList Condition=" '#(ConfigList)' == '' and $(Configuration) != '' " Include="$(Configuration.Split(';'))" />
<!-- parse all requested configurations into a list -->
<ConfigList Condition=" '#(ConfigList)' == '' " Include="Debug" />
<!-- if no configurations were specified, default to Debug -->
</ItemGroup>
<Message Text="Build for configuration %(ConfigList.Identity)"/>
<MSBuild Projects="%(SolutionsToBuild.Identity)" Properties="Configuration=%(ConfigList.Identity)" ContinueOnError="false"/>
<!--<MSBuild Projects="%(SolutionsToBuild.Identity)" Properties="Configuration=Debug" ContinueOnError="false"/>-->
</Target>
I am not sure what I am doing wrong. Any help would be appreciated. Thanks !
Sources referred:
Using MSBuild to Build Multiple Configurations
Passing properties to MSBUILD Task

Related

Setting OutputName from wxi MSBUILD -Customizing Target Order

I'm trying to set the <OutputName> of my .msi when using Wix in VisualStudio.
I have seen the other questions related to this, but I am approaching it a bit differently. Hoping you can all clear up some things for me.
This is my .wixproj
<?xml version="1.0" encoding="utf-8"?>
<Project ToolsVersion="4.0" DefaultTargets="Build" InitialTargets="EnsureWixToolsetInstalled" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
<PropertyGroup>
<Configuration Condition=" '$(Configuration)' == '' ">Debug</Configuration>
<Platform Condition=" '$(Platform)' == '' ">x86</Platform>
<ProjectGuid>fa14</ProjectGuid>
<SchemaVersion>2.0</SchemaVersion>
<OutputName>Installer_x64_v$(Version)</OutputName>
<OutputType>Package</OutputType>
<!--<ProjectGuid>{fa1414f5-97eb-4d39-8ff6-190cd92ca99f}</ProjectGuid>-->
</PropertyGroup>
<PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Debug|x86' ">
<OutputPath>bin\$(Configuration)\</OutputPath>
<IntermediateOutputPath>obj\$(Configuration)\</IntermediateOutputPath>
<DefineConstants>Debug</DefineConstants>
</PropertyGroup>
<PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Release|x86' ">
<OutputPath>bin\$(Configuration)\</OutputPath>
<IntermediateOutputPath>obj\$(Configuration)\</IntermediateOutputPath>
<WixVariables>
</WixVariables>
</PropertyGroup>
<ItemGroup>
<Compile Include="Product.wxs" />
<Compile Include="Files.wxs" />
<Compile Include="UI.wxs" />
</ItemGroup>
<ItemGroup>
<WixExtension Include="WixUIExtension">
<HintPath>$(WixExtDir)\WixUIExtension.dll</HintPath>
<Name>WixUIExtension</Name>
</WixExtension>
</ItemGroup>
<Import Project="$(WixTargetsPath)" Condition=" '$(WixTargetsPath)' != '' " />
<Import Project="$(MSBuildExtensionsPath32)\Microsoft\WiX\v3.x\Wix.targets" Condition=" '$(WixTargetsPath)' == '' AND Exists('$(MSBuildExtensionsPath32)\Microsoft\WiX\v3.x\Wix.targets') " />
<Target Name="EnsureWixToolsetInstalled" Condition=" '$(WixTargetsImported)' != 'true' ">
<Error Text="The WiX Toolset v3.11 (or newer) build tools must be installed to build this project. To download the WiX Toolset, see http://wixtoolset.org/releases/" />
</Target>
<!--
To modify your build process, add your task inside one of the targets below and uncomment it.
Other similar extension points exist, see Wix.targets.
<Target Name="BeforeBuild">
</Target>
<Target Name="AfterBuild">
</Target>
-->
<PropertyGroup>
</PropertyGroup>
<Target Name="BeforeBuild">
<ReadLinesFromFile File="Configuration.wxi" >
<Output TaskParameter="Lines" PropertyName="FileContents"/>
</ReadLinesFromFile>
<PropertyGroup>
<!-- Find occurence of string ProductVersion, return everything after 'Productversion', trimming spaces and " -->
<TrimmedWXI>$(FileContents.Substring($(FileContents.IndexOf(ProductVersion))).Replace(" ","").Replace('"',""))</TrimmedWXI>
<!-- Find the equals sign, add 1-->
<VersionStart>$([MSBuild]::Add($(TrimmedWXI.IndexOf(=)),1))</VersionStart>
<!-- Find the ?-->
<VersionEnd>$(TrimmedWXI.IndexOf(?))</VersionEnd>
<!-- Find the length of the version-->
<VersionLength>$([MSBuild]::Subtract($(VersionEnd),$(VersionStart)))</VersionLength>
<!-- Find the version-->
<Version>$(TrimmedWXI.Substring($(VersionStart),$(VersionLength)))</Version>
</PropertyGroup>
<Message Importance="High" Text=" Attempting build for $(Version)" />
</Target>
<Target Name="AfterBuild">
<Message Importance="High" Text="BuildDone" />
</Target>
</Project>
And the configuration.wxi
<?xml version="1.0" encoding="utf-8"?>
<Include>
<!-- Setup Configuration -->
<?define ProductName = "Acme" ?>
<?define ProductManufacturer = "AcmeInc." ?>
<?define ProductVersion = "9.99" ?>
<?define ProductUpgradeCode = "FAKEGUID" ?>
</Include>
Now, I am setting the <Version> property appropriately, it parses the file string properly and spits it out in the message, but when it comes to the building of the .msi, it is still blank. Looks like Version gets set after the OutputName is set, and I cant overwrite or make Version set before the OutputName.
I've done some reading and messed around with the Target and build order, but I can't quite get anything to work.
It seems like the OutputName is required to be set before everything else?
Why doesn't this get overridden in the BeforeBuild target?
Is it possible to have this ReadLinesFromFile task happen before the OutputName is set?
Thanks!

How to use Wix binaries on Build machine

I am setting up wix without installing on build machine by keeping Wix binaries in the source code directory itself. When i configure the wixproj file based on the steps mentioned in the wix website
<PropertyGroup>
<WixToolPath>$(SourceCodeControlRoot)\wix\[[Version]]\</WixToolPath>
<WixTargetsPath>$(WixToolPath)Wix.targets</WixTargetsPath>
<WixTasksPath>$(WixToolPath)wixtasks.dll</WixTasksPath>
</PropertyGroup>
, it is not locating the local binary files When i change the WixTarget paths to local directory because in Wix.tagets file has the follwing
<?xml version="1.0" encoding="utf-8"?>
<Project
xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
<!-- All common targets/items/properties -->
<!-- Version specific targets/items/properties -->
<PropertyGroup>
<WixTargetsImported>true</WixTargetsImported>
<!-- MSBuild 4.0 -->
<!-- MSBuild does not do short circuit evaluation of the AND operator, so we cannot have
something like '$(MSBuildToolsVersion)' != '' AND '$(MSBuildToolsVersion)' >= '4.0'
instead set as default and override -->
<WixVersionTargetsPath>wix2010.targets</WixVersionTargetsPath>
<!-- MSBuild 2.0 - 3.5 -->
<WixVersionTargetsPath Condition=" '$(MSBuildToolsVersion)' == '' OR '$(MSBuildToolsVersion)' < '4.0' ">wix200x.targets</WixVersionTargetsPath>
</PropertyGroup>
<Import Project="$(WixVersionTargetsPath)" />
</Project>
commands which invokes wix2010.targets.
In wix2010.targets,
<?xml version="1.0" encoding="utf-8"?>
<!-- Copyright (c) .NET Foundation and contributors. All rights reserved. Licensed under the Microsoft Reciprocal License. See LICENSE.TXT file in the project root for full license information. -->
<Project
xmlns="http://schemas.microsoft.com/developer/msbuild/2003"
DefaultTargets="Build"
InitialTargets="_CheckForInvalidConfigurationAndPlatform;
_CheckRequiredProperties">
<PropertyGroup>
<WixInstallPath Condition=" '$(WixInstallPath)' == ''">$(Registry:HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows Installer XML\3.11#InstallRoot)</WixInstallPath>
<WixInstallPath Condition=" '$(WixInstallPath)' == ''">$(Registry:HKEY_LOCAL_MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows Installer XML\3.11#InstallRoot)</WixInstallPath>
</PropertyGroup>
<!--
//////////////////////////////////////////////////////////////////////////////////////////////////
//////////////////////////////////////////////////////////////////////////////////////////////////
Extension Points
//////////////////////////////////////////////////////////////////////////////////////////////////
//////////////////////////////////////////////////////////////////////////////////////////////////
-->
<!-- Allow a user-customized targets files to be used as part of the build. -->
<PropertyGroup>
<UserTargetsPath>$(MSBuildProjectFullPath).user</UserTargetsPath>
</PropertyGroup>
<Import Project="$(UserTargetsPath)" Condition="Exists('$(UserTargetsPath)')" />
<Import Project="$(CustomBeforeWixTargets)" Condition=" '$(CustomBeforeWixTargets)' != '' and Exists('$(CustomBeforeWixTargets)')" />
<!-- These properties can be overridden to support non-default installations. -->
<PropertyGroup>
<WixTargetsPath Condition=" '$(WixTargetsPath)' == '' AND '$(MSBuildExtensionsPath32)' != '' ">$(MSBuildExtensionsPath32)\Microsoft\WiX\v3.x\Wix.targets</WixTargetsPath>
<WixTargetsPath Condition=" '$(WixTargetsPath)' == '' ">$(MSBuildExtensionsPath)\Microsoft\WiX\v3.x\Wix.targets</WixTargetsPath>
<WixTasksPath Condition=" '$(WixTasksPath)' == '' ">$(WixInstallPath)\WixTasks.dll</WixTasksPath>
<LuxTargetsPath Condition=" '$(LuxTargetsPath)' == '' AND '$(MSBuildExtensionsPath32)' != '' ">$(MSBuildExtensionsPath32)\Microsoft\WiX\v3.x\Lux.targets</LuxTargetsPath>
<LuxTargetsPath Condition=" '$(LuxTargetsPath)' == '' ">$(MSBuildExtensionsPath)\Microsoft\WiX\v3.x\Lux.targets</LuxTargetsPath>
<LuxTasksPath Condition=" '$(LuxTasksPath)' == '' ">$(WixInstallPath)\LuxTasks.dll</LuxTasksPath>
</PropertyGroup>
<!-- This makes the project files a dependency of all targets so that things rebuild if they change -->
<PropertyGroup>
<MSBuildAllProjects Condition="Exists('$(MSBuildProjectFullPath)')">$(MSBuildAllProjects);$(MSBuildProjectFullPath)</MSBuildAllProjects>
<MSBuildAllProjects Condition="Exists('$(WixTargetsPath)')">$(MSBuildAllProjects);$(WixTargetsPath)</MSBuildAllProjects>
<MSBuildAllProjects Condition="Exists('$(LuxTargetsPath)')">$(MSBuildAllProjects);$(LuxTargetsPath)</MSBuildAllProjects>
<MSBuildAllProjects Condition="Exists('$(UserTargetsPath)')">$(MSBuildAllProjects);$(UserTargetsPath)</MSBuildAllProjects>
<MSBuildAllProjects Condition="Exists('$(CustomBeforeWixTargets)')">$(MSBuildAllProjects);$(CustomBeforeWixTargets)</MSBuildAllProjects>
<MSBuildAllProjects Condition="Exists('$(CustomAfterWixTargets)')">$(MSBuildAllProjects);$(CustomAfterWixTargets)</MSBuildAllProjects>
</PropertyGroup>
<!--
//////////////////////////////////////////////////////////////////////////////////////////////////
//////////////////////////////////////////////////////////////////////////////////////////////////
Property Declarations
//////////////////////////////////////////////////////////////////////////////////////////////////
//////////////////////////////////////////////////////////////////////////////////////////////////
-->
<!-- These tasks can be used as general-purpose build tasks. -->
<UsingTask TaskName="Candle" AssemblyFile="$(WixTasksPath)" />
<UsingTask TaskName="Insignia" AssemblyFile="$(WixTasksPath)" />
<UsingTask TaskName="Lit" AssemblyFile="$(WixTasksPath)" />
<UsingTask TaskName="Light" AssemblyFile="$(WixTasksPath)" />
<UsingTask TaskName="Torch" AssemblyFile="$(WixTasksPath)" />
<!-- These tasks are extensions for harvesting WiX source code from other sources. -->
<UsingTask TaskName="HeatFile" AssemblyFile="$(WixTasksPath)" />
<UsingTask TaskName="HeatDirectory" AssemblyFile="$(WixTasksPath)" />
<UsingTask TaskName="HeatProject" AssemblyFile="$(WixTasksPath)" />
<!-- These tasks are specific to the build process defined in this file, and are not considered general-purpose build tasks. -->
<UsingTask TaskName="AssignProjectConfiguration" AssemblyName="Microsoft.Build.Tasks.v4.0, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a" />
<UsingTask TaskName="AssignTargetPath" AssemblyName="Microsoft.Build.Tasks.v4.0, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a" />
<UsingTask TaskName="ResolveNonMSBuildProjectOutput" AssemblyName="Microsoft.Build.Tasks.v4.0, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a" />
<UsingTask TaskName="ResolveVCProjectOutput" AssemblyName="Microsoft.Build.Tasks.v4.0, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a" />
<UsingTask TaskName="CreateItemAvoidingInference" AssemblyFile="$(WixTasksPath)" />
<UsingTask TaskName="CreateProjectReferenceDefineConstants" AssemblyFile="$(WixTasksPath)" />
<UsingTask TaskName="WixAssignCulture" AssemblyFile="$(WixTasksPath)" />
<UsingTask TaskName="ResolveWixReferences" AssemblyFile="$(WixTasksPath)"/>
<UsingTask TaskName="ReplaceString" AssemblyFile="$(WixTasksPath)"/>
<UsingTask TaskName="GetCabList" AssemblyFile="$(WixTasksPath)" />
<UsingTask TaskName="GetLooseFileList" AssemblyFile="$(WixTasksPath)" />
<UsingTask TaskName="RefreshGeneratedFile" AssemblyFile="$(WixTasksPath)"/>
<UsingTask TaskName="RefreshBundleGeneratedFile" AssemblyFile="$(WixTasksPath)"/>
<UsingTask TaskName="GenerateCompileWithObjectPath" AssemblyFile="$(WixTasksPath)"/>
<!-- WiX tools are 32bit EXEs, so run them out-of-proc when MSBuild is not 32bit. -->
<PropertyGroup>
<RunWixToolsOutOfProc Condition=" '$(PROCESSOR_ARCHITECTURE)'!='x86' ">true</RunWixToolsOutOfProc>
</PropertyGroup>
<!--
Several properties must be set in the main project file, before using this .targets file.
However, if the properties are not set, we pick some defaults.
OutDir:
Indicates the final output location for the project or solution. When building a solution,
OutDir can be used to gather multiple project outputs in one location. In addition,
OutDir is included in AssemblySearchPaths used for resolving references.
OutputPath:
This property is usually specified in the project file and is used to initialize OutDir.
OutDir and OutputPath are distinguished for legacy reasons, and OutDir should be used if at all possible.
BaseIntermediateOutputPath:
This is the top level folder where all configuration specific intermediate output folders will be created.
Default value is obj\
IntermediateOutputPath:
This is the full intermediate Output Path, and is derived from BaseIntermediateOutputPath, if none specified
(eg. obj\debug). If this property is overridden, then setting BaseIntermediateOutputPath has no effect.
-->
<PropertyGroup>
<!-- Ensure any OutputPath has a trailing slash, so it can be concatenated -->
<OutputPath Condition="'$(OutputPath)' != '' and !HasTrailingSlash('$(OutputPath)')">$(OutputPath)\</OutputPath>
<AssemblyName Condition=" '$(AssemblyName)'=='' ">$(MSBuildProjectName)</AssemblyName>
<!--
Be careful not to give OutputPath a default value in the case of an invalid Configuration/Platform.
We use OutputPath specifically to check for invalid configurations/platforms.
-->
<OutputPath Condition=" '$(Platform)'=='' and '$(Configuration)'=='' and '$(OutputPath)'=='' ">bin\Debug\</OutputPath>
<_OriginalConfiguration>$(Configuration)</_OriginalConfiguration>
<_OriginalPlatform>$(Platform)</_OriginalPlatform>
<Configuration Condition=" '$(Configuration)'=='' ">Debug</Configuration>
<ConfigurationName Condition=" '$(ConfigurationName)' == '' ">$(Configuration)</ConfigurationName> <!-- Example, Debug -->
<Platform Condition=" '$(Platform)'=='' ">AnyCPU</Platform>
<_OriginalOutputType>$(OutputType)</_OriginalOutputType>
<OutputType Condition=" '$(OutputType)' == '' ">Package</OutputType>
<BuildProjectReferences Condition="'$(BuildProjectReferences)' == ''">true</BuildProjectReferences>
</PropertyGroup>
<PropertyGroup Condition=" '$(OutputPath)' == '' ">
<!--
A blank OutputPath at this point means that the user passed in an invalid Configuration/Platform
combination. Whether this is considered an error or a warning depends on the value of
$(SkipInvalidConfigurations).
-->
<_InvalidConfigurationError Condition=" '$(SkipInvalidConfigurations)' != 'true' ">true</_InvalidConfigurationError>
<_InvalidConfigurationWarning Condition=" '$(SkipInvalidConfigurations)' == 'true' ">true</_InvalidConfigurationWarning>
</PropertyGroup>
<!-- Properties for the intermediate object output -->
<PropertyGroup>
<BaseIntermediateOutputPath Condition="'$(BaseIntermediateOutputPath)'=='' ">obj\</BaseIntermediateOutputPath>
<BaseIntermediateOutputPath Condition="!HasTrailingSlash('$(BaseIntermediateOutputPath)')">$(BaseIntermediateOutputPath)\</BaseIntermediateOutputPath>
<IntermediateExt Condition=" '$(IntermediateExt)' == '' ">.wixobj</IntermediateExt>
<CleanFile Condition=" '$(CleanFile)' == '' ">$(MSBuildProjectFile).FileList.txt</CleanFile>
<BindContentsFilePrefix Condition=" '$(BindContentsFilePrefix)' == '' ">$(MSBuildProjectFile).BindContentsFileList</BindContentsFilePrefix>
<BindContentsFileExtension Condition=" '$(BindContentsFileExtension)' == '' ">.txt</BindContentsFileExtension>
<BindOutputsFilePrefix Condition=" '$(BindOutputsFilePrefix)' == '' ">$(MSBuildProjectFile).BindOutputsFileList</BindOutputsFilePrefix>
<BindOutputsFileExtension Condition=" '$(BindOutputsFileExtension)' == '' ">.txt</BindOutputsFileExtension>
<BindBuiltOutputsFilePrefix Condition=" '$(BindBuiltOutputsFilePrefix)' == '' ">$(MSBuildProjectFile).BindBuiltOutputsFileList</BindBuiltOutputsFilePrefix>
<BindBuiltOutputsFileExtension Condition=" '$(BindBuiltOutputsFileExtension)' == '' ">.txt</BindBuiltOutputsFileExtension>
<SignedFile Condition=" '$(SignedFile)' == '' ">$(MSBuildProjectFile).Signed.txt</SignedFile>
</PropertyGroup>
<PropertyGroup Condition=" $(IntermediateOutputPath) == '' ">
<IntermediateOutputPath Condition=" '$(PlatformName)' == 'AnyCPU' ">$(BaseIntermediateOutputPath)$(Configuration)\</IntermediateOutputPath>
<IntermediateOutputPath Condition=" '$(PlatformName)' != 'AnyCPU' ">$(BaseIntermediateOutputPath)$(PlatformName)\$(Configuration)\</IntermediateOutputPath>
</PropertyGroup>
<PropertyGroup>
<IntermediateOutputPath Condition="!HasTrailingSlash('$(IntermediateOutputPath)')">$(IntermediateOutputPath)\</IntermediateOutputPath>
</PropertyGroup>
<PropertyGroup>
<CabinetCachePath Condition=" '$(CabinetCachePath)'=='' and '$(ReuseCabinetCache)'=='true' ">$(IntermediateOutputPath)cabcache\</CabinetCachePath>
</PropertyGroup>
<ItemGroup>
<IntermediateAssembly Include="$(IntermediateOutputPath)$(TargetName)$(TargetExt)"/>
<FinalDocFile Include="#(DocFileItem->'$(OutDir)%(Filename)%(Extension)')"/>
</ItemGroup>
<PropertyGroup>
<WixToolPath Condition=" '$(WixToolPath)' == ''">$(WixInstallPath)</WixToolPath>
<WixExtDir Condition=" '$(WixExtDir)' == ''">$(WixToolPath)</WixExtDir>
</PropertyGroup>
</Project>
it is looking C:\programfiles directory to invoke light.exe, heat.exe and all
How do i point the local wix files dirctory in wix2010.targets to run wix projects.
Previously I had configured:
<WixTargetsPath>$(SourceCodeControlRoot)\wix\[[Version]]\Wix.targets</WixTargetsPath>
<WixTasksPath>$(SourceCodeControlRoot)\wix\[[Version]]\wixtasks.dll</WixTasksPath>
Then I changed as per the document i.e I added:
<WixToolPath>$(SourceCodeControlRoot)\wix\[[Version]]\</WixToolPath>
into the property group.
Once added, everything works fine.

msbuild - export all properties defined in block to MSBuild calls

<Target Name="micropython_prebuild">
<PropertyGroup>
<uP_PrebuildPyExe>"$(ProjectDir)\Source\micropython\py\make_prebuild_wrapper.exe"</uP_PrebuildPyExe>
<GnuCat>$(uP_PrebuildPyExe) gnu_cat</GnuCat>
<GnuSed>$(uP_PrebuildPyExe) gnu_sed</GnuSed>
<uP_GenHdrFolder>$(ObjectFolder)\genhdr</uP_GenHdrFolder>
<uP_QSTR_GEN_EXTRA_CFLAGS>-DNO_QSTR -DN_X64 -DN_X86 -DN_THUMB -DN_ARM -DN_XTENSA</uP_QSTR_GEN_EXTRA_CFLAGS>
<uP_SRC>$(ProjectDir)\Source\micropython</uP_SRC>
<uP_MPY_CROSS>"$(ProjectDir)\Source\micropython\mpy-cross\mpy-cross.exe"</uP_MPY_CROSS>
</PropertyGroup>
<MakeDir Directories="$(uP_GenHdrFolder)\"/>
<MSBuild
Projects="$(MSBuildProjectFile)"
Condition="'' == ''"
Targets="prebuild_mpversion"
Properties="uP_PrebuildPyExe=$(uP_PrebuildPyExe);
uP_GenHdrFolder=$(uP_GenHdrFolder)"
/>
</Target>
How do I "export" all the properties I've defined at the top to the calls to MSBuild within this target?
Otherwise, I have to set the Properties of each MSBuild.
You can also create a single property that contains all the definitions:
<Target Name="micropython_prebuild">
<PropertyGroup>
<PrebuildProperties>
uP_PrebuildPyExe="$(ProjectDir)\Source\micropython\py\make_prebuild_wrapper.exe";
GnuCat=$(uP_PrebuildPyExe) gnu_cat;
GnuSed=$(uP_PrebuildPyExe) gnu_sed;
uP_GenHdrFolder=$(ObjectFolder)\genhdr;
uP_QSTR_GEN_EXTRA_CFLAGS=-DNO_QSTR -DN_X64 -DN_X86 -DN_THUMB -DN_ARM -DN_XTENSA;
uP_SRC=$(ProjectDir)\Source\micropython;
uP_MPY_CROSS="$(ProjectDir)\Source\micropython\mpy-cross\mpy-cross.exe";
</PrebuildProperties>
</PropertyGroup>
<MakeDir Directories="$(uP_GenHdrFolder)\"/>
<MSBuild
Projects="$(MSBuildProjectFile)"
Condition="'' == ''"
Targets="prebuild_mpversion"
Properties="$(PrebuildProperties)"
/>
</Target>

Expand MSBuild property containing the name of other property

Let's say I have property $(Foo), that is defined as a result of some function, that returns the string value $(Bar). Is it possible to expand it somehow, so that $(Foo) will be expanded to the value of $(Bar)?
Given example project:
<?xml version="1.0" encoding="utf-8"?>
<Project xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
<PropertyGroup>
<Bar>Bar Value</Bar>
<Foo>$([System.String]::Concat("$(","Bar",")"))</Foo>
<Baz>$(Foo)</Baz>
<Qux>$(Bar)</Qux>
</PropertyGroup>
<Target Name="Test">
<Message Text="Foo == $(Foo)" />
<Message Text="Baz == $(Baz)" />
<Message Text="Qux == $(Qux)" />
</Target>
</Project>
Here's what I have:
S:\>msbuild Test.proj /t:Test /nologo
Build started 18.09.2013 17:52:14.
Project "S:\Test.proj" on node 1 (Test target(s)).
Test:
Foo == $(Bar)
Baz == $(Bar)
Qux == Bar Value
Done Building Project "S:\Test.proj" (Test target(s)).
Build succeeded.
0 Warning(s)
0 Error(s)
So, $(Qux), which is defined to $(Bar) directly, is expanded correctly, but $(Foo) and $(Baz) are not. Is it possible to expand them too?
S:\>msbuild /version
Microsoft (R) Build Engine version 4.0.30319.17929
[Microsoft .NET Framework, version 4.0.30319.18052]
Copyright (C) Microsoft Corporation. All rights reserved.
4.0.30319.17929
You want to simulate something like $($(Foo)) that is invalid syntax for MsBuild. But you can simulate this behavior by using items and by dynamically creating items in targets. You can’t do it in the "global scope" because of Property and Item evaluation order.
So you have to do it in some targets.
Here is sample that sets property by means of InitialTargets.
<?xml version="1.0" encoding="utf-8"?>
<Project InitialTargets="MyPropertiesSetup" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
<PropertyGroup>
<Bar>Bar Value</Bar>
<!-- A value of Foo property specifies the name of the property it takes value from. -->
<Foo>Bar</Foo>
<Baz></Baz>
<Qux>$(Bar)</Qux>
</PropertyGroup>
<Target Name="Test">
<Message Text="Foo == $(Foo)" />
<Message Text="Baz == $(Baz)" />
<Message Text="Qux == $(Qux)" />
</Target>
<Target Name="MyPropertiesSetup">
<ItemGroup>
<_Foo Include="$(Foo)" />
<_Baz Include="%(_Foo.Identity)" />
</ItemGroup>
<PropertyGroup>
<Foo>$(%(_Foo.Identity))</Foo>
<Baz>$(%(_Baz.Identity))</Baz>
</PropertyGroup>
</Target>
</Project>
If you can use item for values instead properties, there is more elegant way do it (MSBuild Trickery #68 - #($(CanYouDoThis)):
<?xml version="1.0" encoding="utf-8"?>
<Project xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
<PropertyGroup>
<Foo>Bar</Foo>
<Foo2>Bar2</Foo2>
</PropertyGroup>
<ItemGroup>
<Bar Include="Bar Value" />
<Bar2 Include="Bar2 Value" />
</ItemGroup>
<Target Name="Test">
<Message Text="Foo == '#($(Foo))'" />
<Message Text="Foo2 == '#($(Foo2))'" />
</Target>
</Project>

Why does the MsbuildExtension Detokenise class reload the project?

This is problematic because any Properties being passed in are lost.
Further Explanation: I pass in a property to the project file. This property is a path to a .props file. It contains tokens and replacement values for the detokenise class. The task apparently reloads the project and the path is not maintained. This doesn't seem to be the case for other task, for example the guid tasks.
In the example I am using a example proj entitled guids.proj
Invoked Using :
<MSBuild.ExtensionPack.FileSystem.Detokenise TaskAction="Detokenise" TargetFiles="#(FileCollectionToBeDetokenized )"/>
Some command line out put follows :
Task "MSBuild.ExtensionPack.FileSystem.Detokenise" (TaskId:11)
Detokenise Task Execution Started [13:04:35] (TaskId:11)
Loading Project: C:\Users\bstrausser\Desktop\guids.proj (TaskId:11)
Detokenising Collection: 1 files (TaskId:11)
C:\Users\*****\Desktop\guids.proj(37,9): error : Property not found: Asset
Directory
Full project file :
Project ToolsVersion="4.0" DefaultTargets="Default" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
<Import Project="$(ParentMSBuildProjectDirectory)\Bin\MSBuild\ExtensionPack\MSBuild.ExtensionPack.tasks" Condition="Exists('$(ParentMSBuildProjectDirectory)\Bin\MSBuild\ExtensionPack\MSBuild.ExtensionPack.tasks')"/>
<Import Project="C:\Program Files (x86)\MSBuild\ExtensionPack\4.0\MSBuild.ExtensionPack.tasks" Condition="!Exists('$(ParentMSBuildProjectDirectory)\Bin\MSBuild\ExtensionPack\MSBuild.ExtensionPack.tasks') AND Exists('C:\Program Files (x86)\MSBuild\ExtensionPack\4.0\MSBuild.ExtensionPack.tasks')"/>
<PropertyGroup>
<TPath>$(MSBuildProjectDirectory)\..\MSBuild.ExtensionPack.tasks</TPath>
<TPath Condition="Exists('$(MSBuildProjectDirectory)\..\..\Common\MSBuild.ExtensionPack.tasks')">$(MSBuildProjectDirectory)\..\..\Common\MSBuild.ExtensionPack.tasks</TPath>
<PROPS>$(DACP)</PROPS>
</PropertyGroup>
<Import Project="$(PROPS)" Condition="'$(DACP)' != ''" />
<Target Name="Default">
<Message text = "$(DACP)" />
<!-- Create a new Guid and get the formatted and unformatted values -->
<MSBuild.ExtensionPack.Framework.Guid TaskAction="Create">
<Output TaskParameter="FormattedGuidString" PropertyName="FormattedGuidString1" />
<Output TaskParameter="GuidString" PropertyName="GuidStringItem" />
</MSBuild.ExtensionPack.Framework.Guid>
<Message Text="GuidStringItem: $(GuidStringItem)"/>
<Message Text="FormattedGuidString: $(FormattedGuidString1)"/>
<!-- Create a new cryptographically strong Guid and get the formatted and unformatted values -->
<MSBuild.ExtensionPack.Framework.Guid TaskAction="CreateCrypto">
<Output TaskParameter="FormattedGuidString" PropertyName="FormattedGuidString1" />
<Output TaskParameter="GuidString" PropertyName="GuidStringItem" />
</MSBuild.ExtensionPack.Framework.Guid>
<Message Text="GuidStringItem Crypto: $(GuidStringItem)"/>
<Message Text="FormattedGuidString Crypto: $(FormattedGuidString1)"/>
<ItemGroup>
<FileCollectionToBeDetokenized Include="C:\Code\MSBuildGit\Configuration\TaskExecutorConfigTransforms\App.GREEN.SCRATCH.config"/>
</ItemGroup>
<Message text = "BaseUrl : $(BaseUrl)" />
<Message text = "DetokenizedTransformFile : #(FileCollectionToBeDetokenized)" />
<MSBuild.ExtensionPack.FileSystem.Detokenise TaskAction="Detokenise" TargetFiles="#(FileCollectionToBeDetokenized )"/>
</Target>