Apache NuttX RTOS: Build Rust App for QEMU RISC-V 64-bit. See https://lupyuen.github.io/articles/rust5

build-nuttx-rust-qemu-riscv64.sh

#!/usr/bin/env bash
#  Build NuttX for QEMU RISC-V 64-bit with Rust App

## TODO: Set PATH
export PATH="$HOME/xpack-riscv-none-elf-gcc-13.2.0-2/bin:$PATH"

set -e  #  Exit when any command fails
set -x  #  Echo commands

## Pull updates
git pull && git status && hash1=`git rev-parse HEAD`
pushd ../apps
git pull && git status && hash2=`git rev-parse HEAD`
popd
echo NuttX Source: https://github.com/apache/nuttx/tree/$hash1 >nuttx.hash
echo NuttX Apps: https://github.com/apache/nuttx-apps/tree/$hash2 >>nuttx.hash

## Show the versions of GCC and Zig
riscv-none-elf-gcc -v

## Configure the NuttX Build
make distclean
tools/configure.sh rv-virt:nsh64 || true

## Enable Hello Rust App
kconfig-tweak --enable CONFIG_EXAMPLES_HELLO_RUST

## Update the Kconfig Dependencies
make olddefconfig

## Build NuttX
make

## Show the size
riscv-none-elf-size nuttx

## Export the Binary Image to nuttx.bin
riscv-none-elf-objcopy \
  -O binary \
  nuttx \
  nuttx.bin

## Copy the config
cp .config nuttx.config

## Dump the disassembly to nuttx.S
riscv-none-elf-objdump \
  --syms --source --reloc --demangle --line-numbers --wide \
  --debugging \
  nuttx \
  >nuttx.S \
  2>&1

## Dump the Rust App Disassembly to hello_rust_1.S
riscv-none-elf-objdump \
  --syms --source --reloc --demangle --line-numbers --wide \
  --debugging \
  ../apps/examples/hello_rust/*1.o \
  >hello_rust_1.S \
  2>&1

## Start the emulator
qemu-system-riscv64 \
  -semihosting \
  -M virt,aclint=on \
  -cpu rv64 \
  -kernel nuttx \
  -nographic \
  -bios none \