Can't Build Projects Using Makefile

I have downloaded hdl-hdl_2018_r2 and attempted to build project fmcomms5\zc706 using the Makefile.

I receive the following message:

lib was unexpected at this time.

make: *** [lib] Error 255

I don't believe the issue to be project specific, since I received the same message for other projects I tried.

I am working in Windows 10 environment with Vivado 2018.2 and make which is installed by SDK at C:\Xilinx\SDK\2018.2\gnuwin\bin

Any guidance would be appreciated.

Thank you