riscv64-toolchain.cmake

# Toolchain file for RISC-V64 on GNU Linux
#
# Use cmake -B <build> --toolchain aarch64-toolchain.cmake

set(CMAKE_SYSTEM_NAME Linux)
set(CMAKE_SYSTEM_PROCESSOR RISCV64)

set(TOOLCHAIN_PREFIX riscv64-linux-gnu)
execute_process(
  COMMAND which ${TOOLCHAIN_PREFIX}-gcc
  OUTPUT_VARIABLE BINUTILS_PATH
  OUTPUT_STRIP_TRAILING_WHITESPACE
)

get_filename_component(RISCV64_TOOLCHAIN_DIR ${BINUTILS_PATH} DIRECTORY)

set(CMAKE_C_COMPILER ${TOOLCHAIN_PREFIX}-gcc)
set(CMAKE_ASM_COMPILER ${CMAKE_C_COMPILER})
set(CMAKE_CXX_COMPILER ${TOOLCHAIN_PREFIX}-g++)

# Disable compiler checks
#
# CMake will try to run various test programs to determine compiler
# capabilities
#
# Those programs can't run when cross-compiling
set(CMAKE_C_COMPILER_WORKS 1)
set(CMAKE_CXX_COMPILER_WORKS 1)

set(CMAKE_SYSROOT ${ARM_TOOLCHAIN_DIR})
set(CMAKE_FIND_ROOT_PATH ${BINUTILS_PATH})
set(CMAKE_FIND_ROOT_PATH_MODE_PROGRAM NEVER)
set(CMAKE_FIND_ROOT_PATH_MODE_LIBRARY ONLY)
set(CMAKE_FIND_ROOT_PATH_MODE_INCLUDE ONLY)

# Set DBT architecture
set(DBT_ARCH RISCV64)