From 5a913794d2931c3de00464cf261215a173f5ab8b Mon Sep 17 00:00:00 2001
From: Brad King <brad.king@kitware.com>
Date: Wed, 17 May 2017 13:19:15 -0400
Subject: cmComputeTargetDepends: Avoid computing with empty configuration

Fix `AddInterfaceDepends` to combine all configurations using the
same approach that `CollectTargetDepends` does.

Fixes: #16896
---
 Source/cmComputeTargetDepends.cxx | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/Source/cmComputeTargetDepends.cxx b/Source/cmComputeTargetDepends.cxx
index cfebda2..8ca8763 100644
--- a/Source/cmComputeTargetDepends.cxx
+++ b/Source/cmComputeTargetDepends.cxx
@@ -294,9 +294,11 @@ void cmComputeTargetDepends::AddInterfaceDepends(
   }
 
   if (dependee) {
-    this->AddInterfaceDepends(depender_index, dependee, "", emitted);
     std::vector<std::string> configs;
     depender->Makefile->GetConfigurations(configs);
+    if (configs.empty()) {
+      configs.push_back("");
+    }
     for (std::vector<std::string>::const_iterator it = configs.begin();
          it != configs.end(); ++it) {
       // A target should not depend on itself.
-- 
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