From 18595e221e0fbd4f143e9259634c05e5014511bc Mon Sep 17 00:00:00 2001
From: David Fowler <davidfowl@gmail.com>
Date: Thu, 22 Oct 2015 04:34:01 -0700
Subject: [PATCH] Make publish require and entrypoint

---
 src/Microsoft.DotNet.Tools.Publish/Program.cs | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/src/Microsoft.DotNet.Tools.Publish/Program.cs b/src/Microsoft.DotNet.Tools.Publish/Program.cs
index 8c0d49986..ad3ed6c20 100644
--- a/src/Microsoft.DotNet.Tools.Publish/Program.cs
+++ b/src/Microsoft.DotNet.Tools.Publish/Program.cs
@@ -81,6 +81,14 @@ namespace Microsoft.DotNet.Tools.Publish
         {
             Reporter.Output.WriteLine($"Publishing {context.RootProject.Identity.Name.Yellow()} for {context.TargetFramework.DotNetFrameworkName.Yellow()}/{context.RuntimeIdentifier}");
 
+            var options = context.ProjectFile.GetCompilerOptions(context.TargetFramework, configuration);
+
+            if (!options.EmitEntryPoint.GetValueOrDefault())
+            {
+                Reporter.Output.WriteLine($"{context.RootProject.Identity} does not have an entry point defined.".Red());
+                return 1;
+            }
+
             // Generate the output path
             if (string.IsNullOrEmpty(outputPath))
             {