diff --git a/cmake/rv32imc.cmake b/cmake/rv32imc.cmake new file mode 100644 index 0000000..0efd05a --- /dev/null +++ b/cmake/rv32imc.cmake @@ -0,0 +1,60 @@ +# Look for GCC in path +# https://xpack.github.io/riscv-none-embed-gcc/ +FIND_FILE( RISCV_XPACK_GCC_COMPILER_EXE "riscv-none-embed-gcc.exe" PATHS ENV INCLUDE) +FIND_FILE( RISCV_XPACK_GCC_COMPILER "riscv-none-embed-gcc" PATHS ENV INCLUDE) +# New versions of xpack +FIND_FILE( RISCV_XPACK_NEW_GCC_COMPILER_EXE "riscv-none-elf-gcc.exe" PATHS ENV INCLUDE) +FIND_FILE( RISCV_XPACK_NEW_GCC_COMPILER "riscv-none-elf-gcc" PATHS ENV INCLUDE) +# Look for RISC-V github GCC +# https://github.com/riscv/riscv-gnu-toolchain +FIND_FILE( RISCV_XPACK_GCC_COMPILER_EXT "riscv64-unknown-elf-gcc.exe" PATHS ENV INCLUDE) +FIND_FILE( RISCV_XPACK_GCC_COMPILER "riscv64-unknown-elf-gcc" PATHS ENV INCLUDE) + +# Select which is found +if (EXISTS ${RISCV_XPACK_NEW_GCC_COMPILER}) +set( RISCV_GCC_COMPILER ${RISCV_XPACK_NEW_GCC_COMPILER}) +elseif (EXISTS ${RISCV_XPACK_GCC_NEW_COMPILER_EXE}) +set( RISCV_GCC_COMPILER ${RISCV_XPACK_NEW_GCC_COMPILER_EXE}) +elseif (EXISTS ${RISCV_XPACK_GCC_COMPILER}) +set( RISCV_GCC_COMPILER ${RISCV_XPACK_GCC_COMPILER}) +elseif (EXISTS ${RISCV_XPACK_GCC_COMPILER_EXE}) +set( RISCV_GCC_COMPILER ${RISCV_XPACK_GCC_COMPILER_EXE}) +elseif (EXISTS ${RISCV_GITHUB_GCC_COMPILER}) +set( RISCV_GCC_COMPILER ${RISCV_GITHUB_GCC_COMPILER}) +elseif (EXISTS ${RISCV_GITHUB_GCC_COMPILER_EXE}) +set( RISCV_GCC_COMPILER ${RISCV_GITHUB_GCC_COMPILER_EXE}) +else() +message(FATAL_ERROR "RISC-V GCC not found. ${RISCV_GITHUB_GCC_COMPILER} ${RISCV_XPACK_GCC_COMPILER} ${RISCV_GITHUB_GCC_COMPILER_EXE} ${RISCV_XPACK_GCC_COMPILER_EXE}") +endif() + +get_filename_component(RISCV_TOOLCHAIN_BIN_PATH ${RISCV_GCC_COMPILER} DIRECTORY) +get_filename_component(RISCV_TOOLCHAIN_BIN_GCC ${RISCV_GCC_COMPILER} NAME_WE) +get_filename_component(RISCV_TOOLCHAIN_BIN_EXT ${RISCV_GCC_COMPILER} EXT) + +STRING(REGEX REPLACE "\-gcc" "-" CROSS_COMPILE ${RISCV_TOOLCHAIN_BIN_GCC}) + +# The Generic system name is used for embedded targets (targets without OS) +set(CMAKE_SYSTEM_NAME Generic ) +set(CMAKE_EXECUTABLE_SUFFIX_C ".elf") +set(RISCV_ARCH rv32imc_zicsr ) +set(RISCV_ABI ilp32) + + +set(CMAKE_ASM_COMPILER {CROSS_COMPILE}gcc ) +set(CMAKE_AR ${CROSS_COMPILE}ar) +set(CMAKE_ASM_COMPILER ${CROSS_COMPILE}gcc) +set(CMAKE_C_COMPILER ${CROSS_COMPILE}gcc) +set(CMAKE_CXX_COMPILER ${CROSS_COMPILE}g++) + +set( CMAKE_OBJCOPY ${RISCV_TOOLCHAIN_BIN_PATH}/${CROSS_COMPILE}objcopy + CACHE FILEPATH "The toolchain objcopy command " FORCE ) + +set( CMAKE_OBJDUMP ${RISCV_TOOLCHAIN_BIN_PATH}/${CROSS_COMPILE}objdump + CACHE FILEPATH "The toolchain objdump command " FORCE ) + +set( CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -g" ) +set( CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -march=${RISCV_ARCH} -mabi=${RISCV_ABI}" ) + +set( CMAKE_C_FLAGS "${CMAKE_C_FLAGS}" CACHE STRING "" ) +set( CMAKE_CXX_FLAGS "${CMAKE_C_FLAGS}" CACHE STRING "" ) +set( CMAKE_ASM_FLAGS "${CMAKE_C_FLAGS}" CACHE STRING "" )