appendZigProcessFlags

pub fn appendZigProcessFlags(
    m: *Module,
    zig_args: *std.array_list.Managed([]const u8),
    asking_step: ?*Step,
) !void {
    const b = m.owner;

    try addFlag(zig_args, m.strip, "-fstrip", "-fno-strip");
    try addFlag(zig_args, m.single_threaded, "-fsingle-threaded", "-fno-single-threaded");
    try addFlag(zig_args, m.stack_check, "-fstack-check", "-fno-stack-check");
    try addFlag(zig_args, m.stack_protector, "-fstack-protector", "-fno-stack-protector");
    try addFlag(zig_args, m.omit_frame_pointer, "-fomit-frame-pointer", "-fno-omit-frame-pointer");
    try addFlag(zig_args, m.error_tracing, "-ferror-tracing", "-fno-error-tracing");
    try addFlag(zig_args, m.sanitize_thread, "-fsanitize-thread", "-fno-sanitize-thread");
    try addFlag(zig_args, m.fuzz, "-ffuzz", "-fno-fuzz");
    try addFlag(zig_args, m.valgrind, "-fvalgrind", "-fno-valgrind");
    try addFlag(zig_args, m.pic, "-fPIC", "-fno-PIC");
    try addFlag(zig_args, m.red_zone, "-mred-zone", "-mno-red-zone");
    try addFlag(zig_args, m.no_builtin, "-fno-builtin", "-fbuiltin");

    if (m.sanitize_c) |sc| switch (sc) {
        .off => try zig_args.append("-fno-sanitize-c"),
        .trap => try zig_args.append("-fsanitize-c=trap"),
        .full => try zig_args.append("-fsanitize-c=full"),
    };

    if (m.dwarf_format) |dwarf_format| {
        try zig_args.append(switch (dwarf_format) {
            .@"32" => "-gdwarf32",
            .@"64" => "-gdwarf64",
        });
    }

    if (m.unwind_tables) |unwind_tables| {
        try zig_args.append(switch (unwind_tables) {
            .none => "-fno-unwind-tables",
            .sync => "-funwind-tables",
            .async => "-fasync-unwind-tables",
        });
    }

    try zig_args.ensureUnusedCapacity(1);
    if (m.optimize) |optimize| switch (optimize) {
        .Debug => zig_args.appendAssumeCapacity("-ODebug"),
        .ReleaseSmall => zig_args.appendAssumeCapacity("-OReleaseSmall"),
        .ReleaseFast => zig_args.appendAssumeCapacity("-OReleaseFast"),
        .ReleaseSafe => zig_args.appendAssumeCapacity("-OReleaseSafe"),
    };

    if (m.code_model != .default) {
        try zig_args.append("-mcmodel");
        try zig_args.append(@tagName(m.code_model));
    }

    if (m.resolved_target) |*target| {
        // Communicate the query via CLI since it's more compact.
        if (!target.query.isNative()) {
            try zig_args.appendSlice(&.{
                "-target", try target.query.zigTriple(b.allocator),
                "-mcpu",   try target.query.serializeCpuAlloc(b.allocator),
            });

            if (target.query.dynamic_linker.get()) |dynamic_linker| {
                try zig_args.append("--dynamic-linker");
                try zig_args.append(dynamic_linker);
            }
        }
    }

    for (m.export_symbol_names) |symbol_name| {
        try zig_args.append(b.fmt("--export={s}", .{symbol_name}));
    }

    for (m.include_dirs.items) |include_dir| {
        try include_dir.appendZigProcessFlags(b, zig_args, asking_step);
    }

    try zig_args.appendSlice(m.c_macros.items);

    try zig_args.ensureUnusedCapacity(2 * m.lib_paths.items.len);
    for (m.lib_paths.items) |lib_path| {
        zig_args.appendAssumeCapacity("-L");
        zig_args.appendAssumeCapacity(lib_path.getPath2(b, asking_step));
    }

    try zig_args.ensureUnusedCapacity(2 * m.rpaths.items.len);
    for (m.rpaths.items) |rpath| switch (rpath) {
        .lazy_path => |lp| {
            zig_args.appendAssumeCapacity("-rpath");
            zig_args.appendAssumeCapacity(lp.getPath2(b, asking_step));
        },
        .special => |bytes| {
            zig_args.appendAssumeCapacity("-rpath");
            zig_args.appendAssumeCapacity(bytes);
        },
    };
}