interchanging PA27 and PA28 pins to activate bootloader

[abhaysbharadwaj]

Hi,
Thank you for this bootloader! I am trying to make use of a push button located on PA28 pin and a TX-LED located on PA27. As per your bootloader the button needs to be on PA27.
I am unable to re-compile the bootloader. Is it possible for some help or guidance on the same?

I keep getting error while making:

process_begin: CreateProcess(NULL, uname, ...) failed.
process_begin: CreateProcess(NULL, uname, ...) failed.
process_begin: CreateProcess(NULL, uname, ...) failed.
process_begin: CreateProcess(NULL, uname, ...) failed.
make: *** No rule to make target `SAMD-MSD-Bootloader/main.o', needed by `msd_bootloader_samd21e18a_flash.elf'.  Stop.

and

process_begin: CreateProcess(NULL, uname, ...) failed.
process_begin: CreateProcess(NULL, uname, ...) failed.
process_begin: CreateProcess(NULL, uname, ...) failed.
process_begin: CreateProcess(NULL, uname, ...) failed.
make: *** No rule to make target `/xdk-asf-3.51.0/sam0/utils/linker_scripts/samd21/gcc/samd21e18a_flash.ld', needed by `msd_bootloader_samd21e18a_flash.elf'.  Stop.