Update build.py in Line 159

tensorflow/libs/build.py

@@ -156,11 +156,11 @@ with open("Makefile", "w") as f:
 # make
 if os.path.exists("object"):
   os.system("rm -r object")
-  os.mkdir("object")
+os.mkdir("object")
 os.system("make -j all")
 
 # test
 os.chdir(LIBS_DIR + "/../test")
 # env variable
 cmd = 'export OCTREE_KEY=' + ('64' if KEY64 == '-DKEY64' else '32')
-os.system(cmd + " && python test_all.py")
+os.system(cmd + " && python test_all.py")