From 634c461b22ed92c6d5b0ca34dfa4979cebe3bf22 Mon Sep 17 00:00:00 2001
From: Brad King <brad.king@kitware.com>
Date: Mon, 20 Jul 2020 13:39:45 -0400
Subject: cmGlobalGenerator: Simplify CheckTargetsForMissingSources

Use `GetAllConfigSources` instead of collecting all configurations
ourselves.
---
 Source/cmGlobalGenerator.cxx | 12 +-----------
 1 file changed, 1 insertion(+), 11 deletions(-)

diff --git a/Source/cmGlobalGenerator.cxx b/Source/cmGlobalGenerator.cxx
index d39fefa..5c07e31 100644
--- a/Source/cmGlobalGenerator.cxx
+++ b/Source/cmGlobalGenerator.cxx
@@ -309,17 +309,7 @@ bool cmGlobalGenerator::CheckTargetsForMissingSources() const
         continue;
       }
 
-      std::vector<std::string> configs =
-        target->Makefile->GetGeneratorConfigs(cmMakefile::IncludeEmptyConfig);
-      std::vector<cmSourceFile*> srcs;
-      for (std::string const& config : configs) {
-        target->GetSourceFiles(srcs, config);
-        if (!srcs.empty()) {
-          break;
-        }
-      }
-
-      if (srcs.empty()) {
+      if (target->GetAllConfigSources().empty()) {
         std::ostringstream e;
         e << "No SOURCES given to target: " << target->GetName();
         this->GetCMakeInstance()->IssueMessage(
-- 
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