From fec7dd33d309aeccf870169d957c69f9ee523463 Mon Sep 17 00:00:00 2001
From: Raul Tambre <raul@tambre.ee>
Date: Tue, 16 Jun 2020 20:54:04 +0300
Subject: CUDA: Add issue number to Clang separable compilation error

---
 Source/cmLocalGenerator.cxx | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/Source/cmLocalGenerator.cxx b/Source/cmLocalGenerator.cxx
index f748822..3b3f110 100644
--- a/Source/cmLocalGenerator.cxx
+++ b/Source/cmLocalGenerator.cxx
@@ -1997,7 +1997,8 @@ void cmLocalGenerator::AddLanguageFlags(std::string& flags,
       if (separable) {
         this->Makefile->IssueMessage(
           MessageType::FATAL_ERROR,
-          "CUDA_SEPARABLE_COMPILATION isn't supported on Clang.");
+          "CUDA_SEPARABLE_COMPILATION isn't supported on Clang. "
+          "See CMake issue #20726.");
       }
     }
   }
-- 
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