You can't do anything until you burn a TempleOS CD/DVD from the ISO file and boot it, or you aim your virtual machine's CD/DVD at the ISO file and boot.
TempleOS is 64-bit and will not run on 32-bit hardware.
TempleOS requires 512 Meg of RAM minimum and can have 256 Gig of RAM or more!
TempleOS files are compressed with a nonstandard LZW format and the source code can only be compiled by the TempleOS compiler because it is HolyC, a nonstandard C/C++ dialect. You must boot TempleOS. Then, you can compile it because it is 100% open source and all source present on the distro.
If attempting to run on native hardware, TempleOS may require you to enter I/O port addresses for the CD/DVD drive and the hard drive. In Windows, you can find I/O port info in the Accessories/System Tools/System Info/Hardware Resources/I/O ports. Look for and write down "IDE", "ATA" or "SATA" port numbers. In Linux, use "lspci -v". Then, boot the TempleOS CD and try all combinations. (Sorry, it's too difficult for TempleOS to figure-out port numbers, automatically.)