FAKE ExecProcess build target example

gistfile1.fs

let fslex = @"packages\FSPowerPack.Community.2.1.3.1\Tools\fslex.exe"
let parserDir = @".\LiteMedia.Dsl\"

// FsParse
Target "FsYacc" (fun _ ->
    let result =
        ExecProcess (fun info -> 
            info.FileName <- fsyacc
            info.Arguments <- parserDir + "parser.fsy --module Parser"
        ) (System.TimeSpan.FromMinutes 1.)

    if result <> 0 then failwith "Failed result from fsyacc"
)