compiler/rustc_target/src/spec/i686_pc_windows_gnu.rs

use crate::spec::{LinkerFlavor, LldFlavor, Target, TargetResult};

pub fn target() -> TargetResult {
    let mut base = super::windows_gnu_base::opts();
    base.cpu = "pentium4".to_string();
    base.pre_link_args
        .insert(LinkerFlavor::Lld(LldFlavor::Ld), vec!["-m".to_string(), "i386pe".to_string()]);
    base.max_atomic_width = Some(64);
    base.eliminate_frame_pointer = false; // Required for backtraces
    base.linker = Some("i686-w64-mingw32-gcc".to_string());

    // Mark all dynamic libraries and executables as compatible with the larger 4GiB address
    // space available to x86 Windows binaries on x86_64.
    base.pre_link_args
        .get_mut(&LinkerFlavor::Gcc)
        .unwrap()
        .push("-Wl,--large-address-aware".to_string());

    Ok(Target {
        llvm_target: "i686-pc-windows-gnu".to_string(),
        target_endian: "little".to_string(),
        target_pointer_width: "32".to_string(),
        target_c_int_width: "32".to_string(),
        data_layout: "e-m:x-p:32:32-p270:32:32-p271:32:32-p272:64:64-\
            i64:64-f80:32-n8:16:32-a:0:32-S32"
            .to_string(),
        arch: "x86".to_string(),
        target_os: "windows".to_string(),
        target_env: "gnu".to_string(),
        target_vendor: "pc".to_string(),
        linker_flavor: LinkerFlavor::Gcc,
        options: base,
    })
}