SOFTWARE NEEDED

eclipse cdt( Version: 2018-09 (4.9.0) i used)
ninja
unofficial build of riscv toolchain for windows( gdb have bug in official toolchain for windows. if you use linux it's okay, if you use windows you have to build yourself or find prebuilt from somewhere like sifive)
cmake
cmake4eclipse plugin

STEPS

- add ${toolchain}/bin to path env
- add so search path (if you use linux)
- put ninja to your search path
- run eclipse cdt new c/c++ project
- add cmakelists.txt like this:

cmake_minimum_required(VERSION 3.0)

set(SDK_ROOT "C:/Kendryte/kendryte-standalone-sdk-0.5.2/")
set(TOOLCHAIN "C:/Kendryte/kendryte-toolchain/bin")

set(BUILDING_SDK "yes" CACHE INTERNAL "")

include(${SDK_ROOT}/cmake/common.cmake)
project(k210)

# config self use headers
include(${SDK_ROOT}/cmake/macros.internal.cmake)
INCLUDE_DIRECTORIES(${SDK_ROOT}/lib/arch/include ${SDK_ROOT}/lib/utils/include)
header_directories(${SDK_ROOT}/lib)

# build library first
add_subdirectory(${SDK_ROOT}/lib lib)

# compile project
add_source_files(src/*.c src/*.s src/*.S src/*.cpp)
include(${SDK_ROOT}/cmake/executable.cmake)

- configure cmake. using generate "Eclipse Ninja"
- build project
- launch openocd with -m0
- add debug config "gdb hardware debug"
- configure gdb using "localhost:3333" and configure
- start debugging