compiling with esp8266 latest SDK version using virtual machine

[bha14ur]

when i trying to compile blinky example using SDK on VM under "https://www.youtube.com/watch?v=58bdrN0pkbc" video guide line and enter below code
/Share/esp_iot_sdk_v1.2.0_15_07_03/esp_iot_sdk_v1.2.0/app$ make

i get these warnings and error:

../Makefile:300: warning: overriding commands for target clean' Makefile:300: warning: ignoring old commands for target clean'
../Makefile:304: warning: overriding commands for target clobber' Makefile:304: warning: ignoring old commands for target clobber'
../Makefile:308: warning: overriding commands for target .subdirs' Makefile:308: warning: ignoring old commands for target .subdirs'
make[1]: Entering directory /mnt/Share/esp_iot_sdk_v1.2.0_15_07_03/esp_iot_sdk_v1.2.0/app/user' ../../Makefile:300: warning: overriding commands for target clean'
../Makefile:300: warning: ignoring old commands for target clean' ../../Makefile:304: warning: overriding commands for target clobber'
../Makefile:304: warning: ignoring old commands for target clobber' ../../Makefile:308: warning: overriding commands for target .subdirs'
../Makefile:308: warning: ignoring old commands for target .subdirs' ../../Makefile:361: warning: overriding commands for target .output///lib/libuser.a'
../Makefile:361: warning: ignoring old commands for target .output///lib/libuser.a' make[1]: Leaving directory /mnt/Share/esp_iot_sdk_v1.2.0_15_07_03/esp_iot_sdk_v1.2.0/app/user'

please help me!