Index: libcxxabi/trunk/cmake/config-ix.cmake
===================================================================
--- libcxxabi/trunk/cmake/config-ix.cmake
+++ libcxxabi/trunk/cmake/config-ix.cmake
@@ -36,9 +36,10 @@
       set(MINGW_RUNTIME gcc_s gcc)
     endif()
     set(MINGW_LIBRARIES mingw32 ${MINGW_RUNTIME} moldname mingwex msvcrt advapi32
-                        shell32 user32 kernel32 iconv mingw32 ${MINGW_RUNTIME}
+                        shell32 user32 kernel32 mingw32 ${MINGW_RUNTIME}
                         moldname mingwex msvcrt)
     list(APPEND CMAKE_REQUIRED_LIBRARIES ${MINGW_LIBRARIES})
+    set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -D_WIN32_WINNT=0x0600")
   endif()
   if (CMAKE_C_FLAGS MATCHES -fsanitize OR CMAKE_CXX_FLAGS MATCHES -fsanitize)
     set(CMAKE_REQUIRED_FLAGS "${CMAKE_REQUIRED_FLAGS} -fno-sanitize=all")