I extracted the archive and copied the folder within to C:opt.
I then edited rtconfig.py in bspraspberry-piraspi-64 so that the EXEC_PATH was C:opttoolchainbin.
I then typed scons in the terminal window and it keeps complaining it cannot find aarch64-none-elf-gcc.
What did I forget?
I fixed the above by moving my EXEC_PATH call to after the if EXEC_PATH statement. Now I get this:
C:DerrickGitHubrt-thread-master-vanillart-thread-mastercomponentslibccompilerscommonctime.c:700:10: fatal error: resource_id.h: No such file or directory
700 | #include <resource_id.h>
| ^~~~~~~~~~~~~~~