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README.md
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comrv.c
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comrv_entry.S
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README.md

Overlay Run-Time engine code

This directory includes the RT-Engine source code, implemented according to the HLD Following are instructions for building it.

Prerequisites

  • Install scons build system (for Debian OS) 
    $ sudo apt-get install scons
  • Toolchain
    • You can download the latest LLVM toolchain (executables) here: LLVM-Debian download link
    • The toolchain build includes binutils-gdb changes needed for the Overlay engine build/link and support.
    • Alternatively you can build it yourself, please check section Build overlay toolchain

Configure comrv build

Comrv has compile-switch flags to disable/enable features in the RT engine. To change these flags open the file ./build/SConstruct and comment/uncomment relevant comrv features under Env['PUBLIC_DEF']

Build comrv library

$ cd build
$ scons llvmpath=<path-to-overlay-llvm-installed-directory> gccpath=<path-to-overlay-gcc-installed-directory>

Build overlay toolchain

  • The active development repo can be found in this link llvm-project Follow instructions to build llvm with Overlay support.
  • You will need to build binutils-gdb as well to be used for link and debug. It's advised to build the entry GNU toolchain from this link riscv-gnu-toolchain

Build description:

url=https://github.com/westerndigitalcorporation/riscv-gnu-toolchain.git
branch=comrv-devel
hash=f456f6d03fe702d6190a63d035566a935fba95db