compiler/rustc_target/src/spec/targets/riscv32imac_esp_espidf.rs

use crate::spec::{
    Arch, Env, LlvmAbi, Os, PanicStrategy, RelocModel, Target, TargetMetadata, TargetOptions, cvs,
};

pub(crate) fn target() -> Target {
    Target {
        data_layout: "e-m:e-p:32:32-i64:64-n32-S128".into(),
        llvm_target: "riscv32".into(),
        metadata: TargetMetadata {
            description: Some("RISC-V ESP-IDF".into()),
            tier: Some(3),
            host_tools: Some(false),
            std: Some(true),
        },
        pointer_width: 32,
        arch: Arch::RiscV32,

        options: TargetOptions {
            families: cvs!["unix"],
            os: Os::EspIdf,
            env: Env::Newlib,
            vendor: "espressif".into(),
            linker: Some("riscv32-esp-elf-gcc".into()),
            cpu: "generic-rv32".into(),

            // As RiscV32IMAC architecture does natively support atomics,
            // automatically enable the support for the Rust STD library.
            max_atomic_width: Some(32),
            atomic_cas: true,

            features: "+m,+a,+c".into(),
            llvm_abiname: LlvmAbi::Ilp32,
            panic_strategy: PanicStrategy::Abort,
            relocation_model: RelocModel::Static,
            emit_debug_gdb_scripts: false,
            eh_frame_header: false,
            ..Default::default()
        },
    }
}