From aa49d6ce63fbb1f6b28940116eac06f41f1575c4 Mon Sep 17 00:00:00 2001
From: Oscar Fuentes <ofv@wanadoo.es>
Date: Sun, 5 Jul 2009 18:43:52 +0000
Subject: CMake: Avoids defining _DEBUG on MSVC Release builds. Fixes PR 4379.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@74794 91177308-0d34-0410-b5e6-96231b3b80d8
---
 CMakeLists.txt | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/CMakeLists.txt b/CMakeLists.txt
index 56f9355..6abfa4f 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -65,7 +65,10 @@ else()
 endif()
 
 if( LLVM_ENABLE_ASSERTIONS )
-  add_definitions( -D_DEBUG )
+  # MSVC doesn't like _DEBUG on release builds. See PR 4379.
+  if( NOT MSVC OR NOT uppercase_CMAKE_BUILD_TYPE STREQUAL "RELEASE" )
+    add_definitions( -D_DEBUG )
+  endif()
   # On Release builds cmake automatically defines NDEBUG, so we
   # explicitly undefine it:
   if( uppercase_CMAKE_BUILD_TYPE STREQUAL "RELEASE" )
-- 
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