Merge pull request #2682 from mjvankampen:cmake-QNX-fix

PiperOrigin-RevId: 320191208

CMakeLists.txt

@@ -11,7 +11,7 @@ project(googletest-distribution)
 set(GOOGLETEST_VERSION 1.10.0)
 
 if (CMAKE_VERSION VERSION_GREATER "3.0.2")
-  if(NOT CYGWIN AND NOT MSYS)
+  if(NOT CYGWIN AND NOT MSYS AND NOT ${CMAKE_SYSTEM_NAME} STREQUAL QNX)
     set(CMAKE_CXX_EXTENSIONS OFF)
   endif()
 endif()