Cassette.MSBuild lets you pre-build your asset bundles. This is a key step if you want to upload your bundles to a CDN for release builds instead of serving them from your web server. Unfortunately, Cassette.MSBuild is - as the name indicates - intended for use with MSBuild, not mono-based build processes. Here’s how you can use it in a non-MSBuild environment, like a NancyFX application built in Xamarin Studio on OS X.
Upon installing the Cassette.MSBuild package, you’ll get the first hint that it’s not going to work out of the box:
Since the PowerShell script didn’t run, we’ll look at the source and see what it was supposed to do. The PowerShell script adds a post-build step to your project to build the asset bundles after a successful release build:
$target = $buildProject.Xml.AddTarget("Bundle") $target.AfterTargets = "Build" $task = $target.AddTask("Exec") $task.SetParameter("Command", '"$(msbuildtoolspath)\msbuild.exe" $(ProjectDirectory)cassette.targets /p:OutputPath=$(OutputPath) /t:Bundle /nr:false')
However, there’s another stumbling block here: the after-build task uses msbuild.exe. While there is a (roughly)
corresponding xbuild command on mono platforms, it’s not apparent to me how it can be used to build a .targets file.
Instead, we can add the targets file to our project and call the
CreateBundles task manually.
In your project’s .csproj, add the following line somewhere inside the
<Project></Project> node (you probably have
<Import Project=... /> nodes - it can go after one of those):
<Import Project="$(ProjectDirectory)cassette.targets" />
Immediately after this added line, we’ll add a post-build target:
<Target Name="Bundle" AfterTargets="Build" Condition="'$(Configuration)' == 'Release'"> <CreateBundles Output="cassette-cache" /> </Target>
This will create your asset bundles after a successful release build. Note that the bundles will be created in the
cassete-cache directory, relative to your project file. You can customize this - along with a handful of additional
settings listed in the Cassette.targets
file - by editing the
Reload your project, switch to a release configuration, and build to confirm that everything is working. You should have something like the following in your build output:
Target Bundle: Source directory = /Users/jordan/src/recipequant/RecipeQuant Bin directory = /Users/jordan/src/recipequant/RecipeQuant/bin Output directory = /Users/jordan/src/recipequant/RecipeQuant/cassette-cache App virtual path = / Include other files = False Starting bundling Finished bundling - (took 327ms)
… and your bundles should be ready to use in the cassette-cache directory.