Do not compile trivstring.cpp if not needed

This avoids a MSVC warning.

diff --git a/src/support/CMakeLists.txt b/src/support/CMakeLists.txt
index b0d1c6db202f58ca12a57dadf6b69f42632b195d..42a9134ee3ae5bb9b8ed7530b51774cb9abdd117 100644 (file)
--- 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")