From 2e5ecd9dfbd6a9068ba384bf60726d5eae546b84 Mon Sep 17 00:00:00 2001
From: Georg Baum <baum@lyx.org>
Date: Fri, 26 Dec 2014 20:09:58 +0100
Subject: [PATCH] Do not compile trivstring.cpp if not needed

This avoids a MSVC warning.
---
 src/support/CMakeLists.txt | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/src/support/CMakeLists.txt b/src/support/CMakeLists.txt
index b0d1c6db20..42a9134ee3 100644
--- a/src/support/CMakeLists.txt
+++ b/src/support/CMakeLists.txt
@@ -33,6 +33,9 @@ list(REMOVE_ITEM support_sources
 	${TOP_SRC_DIR}/src/support/os_cygwin.cpp
 	${TOP_SRC_DIR}/src/support/os_os2.C
 	${TOP_SRC_DIR}/src/support/gettext.cpp)
+if(NOT STD_STRING_USES_COW)
+	list(REMOVE_ITEM support_sources ${TOP_SRC_DIR}/src/support/trivstring.cpp)
+endif()
 
 if(APPLE)
 	message(STATUS "Mac LinkBack support")