diff --git a/CMakeModules/Gn.cmake b/CMakeModules/Gn.cmake
index 4b5edf1..b690479 100644
--- a/CMakeModules/Gn.cmake
+++ b/CMakeModules/Gn.cmake
@@ -1,4 +1,4 @@
-set(_GEN_ARGS use_gold=false target_cpu=\\"${TARGET_CPU}\\" target_os=\\"${TARGET_OS}\\" is_component_build=false)
+set(_GEN_ARGS use_gold=false target_cpu=\\"${TARGET_CPU}\\" target_os=\\"${TARGET_OS}\\" is_component_build=false use_custom_libcxx=false use_custom_libcxx_for_host=false rtc_use_protobuf=false)
 
 if (MSVC OR XCODE)
   set(_GEN_ARGS ${_GEN_ARGS} is_debug=$<$<CONFIG:Debug>:true>$<$<CONFIG:Release>:false>$<$<CONFIG:RelWithDebInfo>:false>$<$<CONFIG:MinSizeRel>:false>)
diff --git a/CMakeModules/TargetOsAndCpu.cmake b/CMakeModules/TargetOsAndCpu.cmake
index 70b9fa4..0c8f9b1 100644
--- a/CMakeModules/TargetOsAndCpu.cmake
+++ b/CMakeModules/TargetOsAndCpu.cmake
@@ -82,7 +82,7 @@ if (UNIX)
   if (CMAKE_BUILD_TYPE MATCHES Debug)
     list(APPEND LIBWEBRTC_DEFINITIONS _GLIBCXX_DEBUG=1 _DEBUG=1)
   endif (CMAKE_BUILD_TYPE MATCHES Debug)
-  list(APPEND LIBWEBRTC_DEFINITIONS WEBRTC_POSIX _GLIBCXX_USE_CXX11_ABI=0)
+  list(APPEND LIBWEBRTC_DEFINITIONS WEBRTC_POSIX)
 elseif (WIN32)
   set(LIBWEBRTC_REQUIRED_C_FLAGS_DEBUG "/MDd")
   set(LIBWEBRTC_REQUIRED_C_FLAGS_RELEASE "/MD")