--- CMakeLists.txt	2020-04-20 02:25:17
+++ CMakeLists.txt	2024-01-22 17:13:42
@@ -152,7 +152,7 @@
         endif()
         set (WEBSOCKETPP_PLATFORM_TLS_LIBS ssl crypto)
         set (WEBSOCKETPP_BOOST_LIBS system thread)
-        set (CMAKE_CXX_FLAGS ${CMAKE_CXX_FLAGS} "-std=c++0x -stdlib=libc++") # todo: is libc++ really needed here?
+        set (CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -std=c++0x -stdlib=libc++") # todo: is libc++ really needed here?
         if (NOT APPLE)
             add_definitions (-DNDEBUG -Wall -Wno-padded) # todo: should we use CMAKE_C_FLAGS for these?
         endif ()