问题
I currently have multiple projects being build using msbuild. I have a small customisation to the build that is handled by a .targets file. One solution is to add the snippet
<Import Project="MyTargets.targets"/>
to each project file. However, ideally I would like to not touch the project files, and be able to pass this information as a parameter to msbuild. That way I could easily control whether I run this customisation from the command line, and I don't have to touch the existing project files.
Is this possible?
回答1:
You can do that easily with MSBuild 4.0 (check your version by top-level attribute ToolsVersion="4.0"):
There are multiple properties you can use to import your targets before and after Common.targets and or CSharp.targets loaded.
Simplest way is to use 2 sets of self explaining properties. First set is: $(CustomBeforeMicrosoftCommonTargets) $(CustomAfterMicrosoftCommonTargets)
and second one:
$(CustomBeforeMicrosoftCSharpTargets)
$(CustomAfterMicrosoftCSharpTargets)
Property names are pretty self-explained.
Just pass full file name to any of this properties via msbuild.exe e.g.
msbuild.exe /p:CustomBeforeMicrosoftCSharpTargets=c:\mytargets\custom.targets
You can use other "ImportByWildcard(Before|After)...." properties if you need to import multiple files. But in that case you need to pass more parameters to command-line.
回答2:
Starting from MSBuild 15.0, the following two files are auto-imported into your build in case they are found on the project path or in any parent folder on the path to the root directory:
- Directory.Build.props
- Directory.Build.targets
Remark: once the props or targets file is found, MSBuild will stop looking for a parent one.
Also see: https://docs.microsoft.com/en-us/visualstudio/msbuild/customize-your-build
回答3:
Lets say you have a project file called "Project.msbuild". You would add this conditional import:
<Import Project="$(TargetToImport)" Condition="'$(TargetToImport)' != ''" />
Then pass the name of the target file you want to import as an msbuild property:
msbuild.exe Project.msbuild /p:TargetToImport="TargetFile.Target"
回答4:
Make sure you use an absolute path to the target file and it works.
Source: Sayed Ibrahim Hashimi - MSBuild how to execute a target after CoreCompile part 2.
msbuild.exe /p:CustomBeforeMicrosoftCSharpTargets="c:\mytargets\custom.targets" /preprocess:out.xml
Use /preprocess[:filepath] to see the result of the imports.
You don't have to modify any csproj or vbproj files.
Of course, it only works where you can set MSBuild Properties.
来源：https://stackoverflow.com/questions/18249027/import-targets-file-from-command-line-in-msbuild