Okay got past that error. Now this happens:

Code
obj/windows64/ume/ume/drivlist.o:drivlist.c:(.rdata+0x15c0): undefined reference
 to `driver_alphaone'
obj/windows64/ume/ume/drivlist.o:drivlist.c:(.rdata+0x15c8): undefined reference
 to `driver_alphaonea'
obj/windows64/ume/ume/drivlist.o:drivlist.c:(.rdata+0x23350): undefined referenc
e to `driver_metalmx'
obj/windows64/ume/ume/drivlist.o:drivlist.c:(.rdata+0x23538): undefined referenc
e to `driver_mhavoc'
obj/windows64/ume/ume/drivlist.o:drivlist.c:(.rdata+0x23540): undefined referenc
e to `driver_mhavoc2'
obj/windows64/ume/ume/drivlist.o:drivlist.c:(.rdata+0x23548): undefined referenc
e to `driver_mhavocp'
obj/windows64/ume/ume/drivlist.o:drivlist.c:(.rdata+0x23550): undefined referenc
e to `driver_mhavocrv'
collect2.exe: error: ld returned 1 exit status
makefile:897: recipe for target 'ume64.exe' failed
make: *** [ume64.exe] Error 1

Would doing a clean build help? I only resumed the build after I fixed the $PATH variable.