FAKE build a project with unsafe flag - f#-fake

Question

I am trying to build a solution where one of the projects needs to be build with the unsafe flag on, it is set correctly in the project however when building I get the error:
"Unsafe code may only appear if compiling with /unsafe"
This is my target at the moment
Target "CompileApp" (fun _ ->
!! #"**\*.csproj"
|> MSBuildRelease buildDir "Build"
|> Log "AppBuild-Output: "
)
I tried adding MsBuildParams but not sure how to use them yet (ie there doesnt seem to be an option in MsBuildRelease to add something like this
let setParams defaults =
{ defaults with
Verbosity = Some(Quiet)
Targets = ["Build"]
Properties =
[
"AllowUnsafeBlocks", "True"
"Configuration", "Release"
]
}
Also would the best option here be create two different targets for projects with safe and unsafe code, of would there be a better way?

Answer 1

I found that the AllowUnsafeBlocks=true element was only defined under the DEBUG|AnyCPU and Release|AnyCPU PropertyGroups in my project file.
Using this fixed it for me:
Target "BuildApp" (fun _ ->
!! ".\**\MyApp.*.csproj"
|> MSBuild buildDir "Build" ["Configuration", "Release"; "Platform", "AnyCPU"]
|> Log "AppBuild-Output: "
)
Hope this helps.

Answer 2

Ok I think this might be the way:
Target "CompileUnsafe" (fun _ ->
let buildMode = getBuildParamOrDefault "buildMode" "Release"
let setParams defaults =
{ defaults with
Verbosity = Some(Quiet)
Targets = ["Build"]
Properties =
[
"Optimize", "True"
"DebugSymbols", "True"
"Configuration", buildMode
"AllowUnsafeBlocks", "True"
]
}
build setParams "./ProjectPlugins.sln"
)
IF there are better solutions I'm all ears (the solution was there in the docs and I just missed it)