설치 참고

xargo를 위한 환경변수

export XARGO_RUST_SRC=$MY_BUILD_ROOT/rust-xtensa/src
export RUSTC=$MY_BUILD_ROOT/rust_build/bin/rustc

.cargo/config

[build]
target = "xtensa-esp32-none-elf"

Cargo.toml

[profile.dev]
lto = false
incremental = false
debug = false
codegen-units = 1

[profile.release]
lto = false
incremental = false
debug = false
codegen-units = 1

빌드: xargo build