Index: source/Utility/CMakeLists.txt
===================================================================
--- source/Utility/CMakeLists.txt
+++ source/Utility/CMakeLists.txt
@@ -22,7 +22,9 @@
     list(APPEND LLDB_SYSTEM_LIBS atomic)
 endif()
 
-list(APPEND LLDB_SYSTEM_LIBS ${Backtrace_LIBRARY})
+if (NOT "${Backtrace_LIBRARY}" STREQUAL "Backtrace_LIBRARY-NOTFOUND")
+  list(APPEND LLDB_SYSTEM_LIBS ${Backtrace_LIBRARY})
+endif()
 
 if (NOT LLDB_DISABLE_PYTHON AND NOT LLVM_BUILD_STATIC)
   list(APPEND LLDB_SYSTEM_LIBS ${PYTHON_LIBRARIES})