TM4C1294NCPDT: Guidance on compiling "boot_serial" example in CCS using GNU GCC

Hello, I'm trying (and failing) to compile the "boot_serial" bootloader example from TivaWare (the "ek-tm4c1294xl" examples directory).

I'm Using CCS Version: 10.2.0.00009.

I have set the compiler version to GNU v9.2.1 (Linaro), yet I get tons of errors. I've noticed in the TivaWare Bootloader User's Guide, there are startup and linker files for using GNU GCC, although I'm not too sure if i'm doing any of this correctly.

Can someone provide some guidance?

Thanks.