Example CMake build script for the RISC-V targeting embedded bare metal applications.

A small makefile will build the CMake build scripts in the build directory and run them.

Input files:

• Makefile : Invoke CMake and the generated makefile.
• cmake/riscv.cmake : Locate a cross compiler and set the RISC-V variant.
• src/CMakeLists.txt : Build a simple test application with custom linker file and output of map, hex and disassembly files.
• src/test.c : Example application file with main() function.
• src/startup.c : Dummy bare-metal entry and startup. NOT FUNCTIONAL.
• src/dummy.c : Dummy additional source file.
• include/dummy.h : Dummy include files.

BSP Files:

• src/test.lds : Linker script from SiFive

Output:

• build/test.elf : Target executable
• build/test.hex : Target hex-file
• build/test.map : Target linker map file
• build/test.disasm : Disassembled executable
• build/test.s : Disassembled test.o object
• build/startup.s : Disassembled startup.o object

Credits:

Baremetal CMake script for ARM: https://www.valvers.com/open-software/raspberry-pi/bare-metal-programming-in-c-part-3/.