Add WITH_ANAKIN option log in paddle_build.sh

paddle/scripts/paddle_build.sh

@@ -106,6 +106,7 @@ function cmake_gen() {
         -DWITH_FLUID_ONLY=${WITH_FLUID_ONLY:-OFF}
         -DCMAKE_EXPORT_COMPILE_COMMANDS=ON
         -DWITH_CONTRIB=${WITH_CONTRIB:-ON}
+        -DWITH_ANAKIN=${WITH_ANAKIN:-ON}
     ========================================
 EOF
     # Disable UNITTEST_USE_VIRTUALENV in docker because