/// <summary>
/// Dafny comes with it's own copy of z3, to save new users the trouble of having to install extra dependency.
/// For this to work, Dafny makes the Z3ExecutablePath point to the path were Z3 is put by our release script.
/// For developers though (and people getting this from source), it's convenient to be able to run right away,
/// so we vendor a Windows version.
/// </summary>
private void SetZ3ExecutableName()
{
var platform = (int)System.Environment.OSVersion.Platform;
// http://www.mono-project.com/docs/faq/technical/
var isUnix = platform == 4 || platform == 128;
var z3binName = isUnix ? "z3" : "z3.exe";
var dafnyBinDir = System.IO.Path.GetDirectoryName(System.Reflection.Assembly.GetExecutingAssembly().Location);
var z3BinDir = System.IO.Path.Combine(dafnyBinDir, "z3", "bin");
var z3BinPath = System.IO.Path.Combine(z3BinDir, z3binName);
if (!System.IO.File.Exists(z3BinPath) && !isUnix)
{
// This is most likely a Windows user running from source without downloading z3
// separately; this is ok, since we vendor z3.exe.
z3BinPath = System.IO.Path.Combine(dafnyBinDir, z3binName);
}
if (!System.IO.File.Exists(z3BinPath) && errorReporter != null)
{
var tok = new Bpl.Token(1, 1)
{
filename = "*** "
};
errorReporter.Warning(MessageSource.Other, tok, "Could not find '{0}' in '{1}'.{2}Downloading and extracting a Z3 distribution to Dafny's 'Binaries' folder would solve this issue; for now, we'll rely on Boogie to find Z3.",
z3binName, z3BinDir, System.Environment.NewLine);
}
else
{
Z3ExecutablePath = z3BinPath;
}
}