
Some libraries for each board is pre-compiled for rapid build.
The library sources are opened on Web compiler, you can log-in
in GADGET RENESAS Web site gadget.renesas.com.

Belows are changed from original files and folders
- .asm to .S
- drivers folder such as rx63n moved into core
- (for rapid build) generated core.a in tmp folder copied into variants folder
  after renamed core_vXXX.a like core_v213.a. Then all source files in core 
  are removed not to compile them exclude files in drivers folder such as rx63n .
