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matty0005/installing_riscv_32_toolchain_m1.md

Last active January 29, 2023 02:06
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Instructions to install the 32bit risc-v toolchain on apple silicon devices (eg, m1)
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installing_riscv_32_toolchain_m1.md

If you're having trouble compiling and installing the 32bit toolchain (riscv32-unknown-elf-gcc, etc) for RISC-V on your M1/Apple Silicon Mac, here is a guide to how I installed it.

brew edit riscv-gnu-toolchain

This will open a text editor of your choice. Inside this, you want to edit the args on line 59 to include the --with-arch=rv32i and --with-abi=ilp32 arguments. The end result should look like:

args = [
    "--prefix=#{prefix}",
    "--with-cmodel=medany",
    "--with-arch=rv32i",
    "--with-abi=ilp32"
  ]

Once this is done, run

brew install riscv-tools

This will use the riscv-gnu-toolchain that we just modified and will only install the 32bit toolchain (for embedded development)

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