+ riscv64-linux)
+ # The 4.19 series needs to be built with GCC 10.4 & binutils 2.37
+ export gcc_version="10.4.0"
+ export binutils_version="2.37"
+ export toolchain_directory="toolchain-$gcc_version-bintuils-$binutils_version"
+ reset_path
+ set_path
+ reset_path
+ set_path
+ setup_directories
+ download_source
+ setup_source
+ build binutils
+ build gcc
+ reset_path
+ ;;