jinhuang415 commented on a change in pull request #10783: Fix 'make clean 
USE_MKLDNN=1' will build mkldnn issue
URL: https://github.com/apache/incubator-mxnet/pull/10783#discussion_r185687263
 
 

 ##########
 File path: Makefile
 ##########
 @@ -66,13 +66,22 @@ $(warning "USE_MKL2017 is deprecated. We will switch to 
USE_MKLDNN.")
 endif
 
 ifeq ($(USE_MKLDNN), 1)
+ifeq ($(MAKECMDGOALS),)
 
 Review comment:
   MAKECMDGOALS is a makefile builtin variable used to indicate the make 
target, if user input "make clean", MAKECMDGOALS will be 'clean', if user input 
"make all", MAKECMDGOALS  will be 'all', and default will be empty (we usually 
don't specify the target when make MXNet so MAKECMDGOALS will be empty and 
Makefile will find first target which is all to build).
   So user don't need to set MAKECMDGOALS, it is set automatically by make.

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