message: define popen and pclose on windows in vmodule_test.
diff: @@ -16,11 +16,18 @@ limitations under the License.
  // Test that popens a child process with the VLOG-ing environment variable set
  // for the logging framework, and observes VLOG_IS_ON and VLOG macro output.
  +#include <stdio.h>
  +#include <string.h>
  +
  #include "tensorflow/core/platform/logging.h"
  #include "tensorflow/core/platform/platform.h"
  #include "tensorflow/core/platform/test.h"
  -#include <string.h>
  +// Make sure popen and pclose ara available on windows.
  +#ifdef PLATFORM_WINDOWS
  +#define popen _popen
  +#define pclose _pclose
  +#endif
  namespace tensorflow {
  namespace {
  