Compiler.cs

public class Compiler
{
    /// <summary>
    /// Compile all the projects of the solution
    /// </summary>
    public void Compile(Solution solution)
    {
        foreach (var project in solution.Projects)
        {
            Compile(project);
        }
    }

    /// <summary>
    /// Compile the project and its dependencies. It also recursively compile all the dependencies of the project
    /// </summary>
    public void Compile(Project project)
    {
        foreach (var dependencyProject in project.ProjectDependencies)
        {
            Compile(dependencyProject);
        }

        if (!project.IsBuild)
        {
            project.Build();
        }
    }
}