MSBuild - Override MinimalRebuild (/Gm) to false - c++

Question

After some research, to get VisualStudio to build a project's object files in parallel, one must ensure that project properties MinimalRebuild is off and MultiProcessorCompilation is on. I can configure this in the project file, but is there a way to override these project settings on the command line using msbuild?
In other words, using msbuild from the command line, how would I override MinimalRebuild (/Gm-) to be false and MultiProcessorCompilation (/MP) to be true? The following doesn't seem to work
msbuild /m:7 /p:CL_MPCount=7 /p:MinimalRebuild=false /p:MultiProcessorCompilation=true
As an aside, is /p:CL_MPCOUNT redundant with the MultiProcessorCompilation property? Overall, I'm having trouble finding documentation on what fits the /p option.

Answer 1

In other words, using msbuild from the command line, how would I
override MinimalRebuild (/Gm-) to be false and
MultiProcessorCompilation (/MP) to be true?
CL_MPCount can be overrided by /p:xxx=xxx but MultiProcessorCompilation and MinimalRebuild are not. Just to be clear, It can only be overridden by /p:xxx=xxx(p means property) if it is a property of MSBuild. And the Property usually can be called by $. So I do some tests:
Edit
Test
1）CL_MPCount
This value means Maximum Number of concurrent C++ compilations in VS IDE.You can refer to this.
So I have assigned a value by VS IDE by(Debug->Options->Projects and Solutions->VC++ Project Solutions and set the Maximum Number of concurrent C++ compilations to 2.)
write a custom target like
<Target Name ="Test" AfterTargets="Build">
<Message Importance="high" Text="CL_MPCount is= $(CL_MPCount)">
</Message>
</Target>
Then Build and it shows；
From this we can see that this is a property that belongs to MSBuild.
2）MinimalRebuild
Usually, it means /GM and it usually set in the Properties in a c++ project. l have set it to True by (Right-click on the project-->Properties-->C/C++-->Code Generation-->set Enable Minimal Rebuild to True).
Custom target like
<Target Name ="Test" AfterTargets="Build">
<Message Importance="high" Text="MinimalRebuild is= $(MinimalRebuild)">
</Message>
</Target>
The result is like
From it, the value which set in the VS IDE cannot be available by $(MinimalRebuild) which means it is not a property of MSBuild.
3) MultiProcessorCompilation
It also means /MP and from the document we will find that it is an option of the the compiler not a property of MSBuild. Besides, l did the same as the MinimalRebuild and it is not being output. So it is also not a property of MSBuild.
In addition, l thought MinimalRebuild and MultiProcessorCompilation are the options of MSBuild before. So I type MSBuild -help in Command Line and found that it did not list these parameters at all. So I think these two parameters have nothing to do with MSBuild at all, but are just some of the compiler's options.
Hope it could help you.

Answer 2

I found a way to override both properties at User level. Anyway you may find them helpful (for example for Build host where incremental build is not meaningful at all).
Create these two properties files:
%USERPROFILE%\AppData\Local\Microsoft\MSBuild\v4.0\Microsoft.Cpp.Win32.user.props
%USERPROFILE%\AppData\Local\Microsoft\MSBuild\v4.0\Microsoft.Cpp.x64.user.props
with following content:
<?xml version="1.0" encoding="utf-8"?>
<Project DefaultTargets="Build" ToolsVersion="4.0" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
<ImportGroup Label="PropertySheets" />
<PropertyGroup Label="UserMacros" />
<PropertyGroup />
<ItemDefinitionGroup>
<ClCompile>
<MinimalRebuild>false</MinimalRebuild>
<MultiProcessorCompilation>true</MultiProcessorCompilation>
<ProcessorNumber>2</ProcessorNumber>
</ClCompile>
</ItemDefinitionGroup>
<ItemGroup />
</Project>
Feel free to customize ProcessorNumber to suit your hardware.
Now MSBUild will use above values for all projects.