pub const ObjectFormat = enum {
    /// C source code.
    c,
    /// The Common Object File Format used by Windows and UEFI.
    coff,
    /// The Executable and Linkable Format used by many Unixes.
    elf,
    /// The Generalized Object File Format used by z/OS.
    goff,
    /// The Intel HEX format for storing binary code in ASCII text.
    hex,
    /// The Mach object format used by macOS and other Apple platforms.
    macho,
    /// Nvidia's PTX (Parallel Thread Execution) assembly language.
    nvptx,
    /// The a.out format used by Plan 9 from Bell Labs.
    plan9,
    /// Machine code with no metadata.
    raw,
    /// The Khronos Group's Standard Portable Intermediate Representation V.
    spirv,
    /// The WebAssembly binary format.
    wasm,
    /// The eXtended Common Object File Format used by AIX.
    xcoff,

    // LLVM tags deliberately omitted:
    // - dxcontainer

    pub fn fileExt(of: ObjectFormat, arch: Cpu.Arch) [:0]const u8 {
        return switch (of) {
            .c => ".c",
            .coff => ".obj",
            .elf, .goff, .macho, .wasm, .xcoff => ".o",
            .hex => ".ihex",
            .nvptx => ".ptx",
            .plan9 => arch.plan9Ext(),
            .raw => ".bin",
            .spirv => ".spv",
        };
    }

    pub fn default(os_tag: Os.Tag, arch: Cpu.Arch) ObjectFormat {
        return switch (os_tag) {
            .aix => .xcoff,
            .driverkit, .ios, .macos, .tvos, .visionos, .watchos => .macho,
            .plan9 => .plan9,
            .uefi, .windows => .coff,
            .zos => .goff,
            else => switch (arch) {
                .nvptx, .nvptx64 => .nvptx,
                .spirv, .spirv32, .spirv64 => .spirv,
                .wasm32, .wasm64 => .wasm,
                else => .elf,
            },
        };
    }
}