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vivado 18.2 microblaze SDK get undefined reference to main.c error. Following microblaze tutorial


HI, I am following the Microblaze tutorial located

https://reference.digilentinc.com/vivado/getting-started-with-ipi/2018.2 andI am using the same version, but whenI try to load theProgram or run clean build or regenerate BSP I get 

'Building target: ipi-gsg.elf'
'Invoking: MicroBlaze gcc linker'
mb-gcc -Wl,-T -Wl,../src/lscript.ld -L../../ipi-gsg_bsp/microblaze_0/lib -mlittle-endian -mcpu=v10.0 -mxl-soft-mul -Wl,--no-relax -Wl,--gc-sections -o "ipi-gsg.elf"  ./src/main.o   -Wl,--start-group,-lxil,-lgcc,-lc,--end-group
c:/xilinx/sdk/2018.2/gnu/microblaze/nt/bin/../lib/gcc/microblaze-xilinx-elf/7.2.0/../../../../microblaze-xilinx-elf/lib/le/crtinit.o: In function `_crtinit':
(.text+0x78): undefined reference to `main'
collect2.exe: error: ld returned 1 exit status

make: *** [ipi-gsg.elf] Error 1


I'm copying and pasting that example C program in that tutorial

I am doing run as LAunch on Hardware   (System DEbugger)  to load it

which gives me this pop up as well

"executables selected for download following on to the following processors doesn't exist or incorrectly specified. Do you wish to ignore them and process? 1. microblaze_0"

I'm using a basys 3 board


How do I fix this? I don't see what is not being referenced to main.c

I've also tried regenerate which didn't do anything



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