crosstool-ng risc-v - sifive hifive1 configuration

howto-ct-ng-sifive-hifive1.md

Howto build a crosscompiler for risc-v sifive-hifive1 with crosstool-ng

Create working dir

mkdir risc-v-gcc
cd risc-v-gcc

Fetch crosstool-ng

git clone https://github.com/crosstool-ng/crosstool-ng.git

Prepare crosstool-ng

./bootstrap
./configure <optionally specify --prefix installdir>
make && make install

Configure toolchain

Use riscv32-unknown-elf sample config as a base

ct-ng riscv32-unknown-elf

Adapt configuration for the hifive1:

ct-ng menuconfig

• Enable newlib build (C-library section)
• Enable "Build a multilib toolchain" (Target options section)

Build toolchain

ct-ng build