在Linux上运行macOS软件

在 Linux 上运行 macOS 软件：深入探索 Darling

Linux 和 macOS 长期以来一直是开发者和高级用户的首选操作系统，各自拥有独特的优势和生态系统。虽然 macOS 以其精致的用户体验和与苹果硬件的无缝集成而闻名，但 Linux 则提供了无与伦比的灵活性、定制化和开源创新。但当您需要在 Linux 机器上运行 macOS 软件时，情况会怎样呢？这时，Darling 这个开源兼容层就派上用场了。

Darling 是什么？

Darling 是一个开源兼容层，它允许 macOS 应用程序在 Linux 上运行。它基于与 Wine 相同的原则构建，Wine 能够让 Windows 应用程序在类 Unix 系统上运行，但特别专注于 macOS。该项目由软件工程师 Joseph Edge 发起，他对跨平台兼容性充满热情。自诞生以来，Darling 已发展成为一个强大的解决方案，得到了开发者社区和用户的支持。

Darling 的工作原理

其核心，Darling 将 macOS API 翻译成它们的 Linux 对等物。这个过程涉及多层抽象：

内核级模拟：Darling 使用一个轻量级的内核扩展来模拟 macOS 特定的系统调用。这确保应用程序可以像在真实的 macOS 机器上一样与底层硬件和系统服务交互。
用户空间兼容性：在内核级模拟之上，Darling 提供了一个模仿 macOS 行为的用户空间环境。这包括模拟 macOS 文件系统、网络堆栈和其他基本服务。
应用程序二进制兼容性：通过翻译 macOS 应用程序二进制文件，Darling 允许用户无需重新编译或进行重大修改即可运行他们喜欢的 macOS 应用程序。

设置 Darling

在 Linux 机器上设置 Darling 非常简单，这要归功于社区的贡献。以下是逐步指南，帮助您开始：

安装依赖项：在开始之前，请确保已安装必要的依赖项。这些包括 build-essential、git 和其他开发工具。在基于 Debian 的系统（如 Ubuntu）上，您可以使用以下命令安装它们：

bash sudo apt-get update sudo apt-get install build-essential git
克隆 Darling 仓库：使用 git 从 GitHub 克隆 Darling 仓库：

bash git clone https://github.com/darlinghq/darling.git cd darling
构建和安装：Darling 提供了一个简单的构建过程。运行以下命令来构建和安装兼容层：

bash ./wip.sh

该命令将设置构建环境并开始编译 Darling。根据您系统的规格，这个过程可能需要一些时间。
运行 macOS 应用程序：安装完成后，您就可以开始运行 macOS 应用程序了。例如，要运行经典的 macOS 应用程序“计算器”，您可以使用：

bash darling -- /Applications/Calculator.app/Contents/MacOS/Calculator

挑战和局限性

虽然 Darling 已经取得了长足的进步，但了解其局限性也很重要。并非所有 macOS 应用程序都能完美运行，有些可能需要额外的配置或补丁。以下是一些常见挑战：

图形和 UI：macOS 应用程序通常依赖于特定的图形 API，这些 API 在 Linux 上可能无法完全支持。这可能导致渲染问题或 UI 故障。然而，社区正在积极改进图形支持。
系统服务：一些 macOS 应用程序依赖于在 Linux 上不可用的系统服务。这些服务包括硬件加速、某些系统 API 等。虽然 Darling 可以模拟许多这些服务，但一些服务可能仍然缺失。
性能：通过 Darling 在 Linux 上运行 macOS 应用程序的性能可能不如在 macOS 上原生运行。这是由于翻译和模拟的开销。然而，随着每个版本的发布，性能一直在稳步提升。

社区贡献

Darling 项目的优势之一是其充满活力的社区。开发者和用户以各种方式为该项目做出贡献：

错误报告和修复：用户报告他们在运行 macOS 应用程序时遇到的问题，社区努力修复这些问题。这种协作方法确保兼容层不断改进。
功能请求：随着项目的发展，根据社区反馈添加新功能。这确保了 Darling 对广泛的用户保持相关性和实用性。
文档和支持：社区提供了广泛的文档和支持，使新用户更容易开始使用，并使有经验的用户能够排除问题。

Darling 的用例

尽管有其局限性，但 Darling 仍有众多用例，特别是对于开发者和爱好者：

测试 macOS 应用程序：开发者可以使用 Darling 在 Linux 上测试他们的 macOS 应用程序，而无需 Mac。这可以节省时间和资源，特别是对于跨平台开发。
运行遗留 macOS 软件：一些用户依赖于不再支持于较新版本 macOS 的遗留 macOS 软件。Darling 允许他们在 Linux 上继续使用这些软件。
教育目的：学生和教育工作者可以使用 Darling 在 Linux 环境中教授和学习 macOS API 和系统服务。

总结

得益于开源兼容层 Darling，在 Linux 上运行 macOS 软件从未如此简单。虽然它不是一个完美的解决方案，并且有其局限性，但它提供了一种强大的方法来弥合两个不同生态系统之间的差距。对于开发者、测试人员和爱好者来说，Darling 是一个宝贵的工具，它扩展了跨平台兼容性的可能性。随着项目的不断发展，我们可以期待更多 macOS 应用程序在 Linux 上无缝运行，进一步模糊这两个强大操作系统之间的界限。

Running macOS Software on Linux: A Deep Dive into Darling

Linux and macOS have long been the go-to operating systems for developers and power users, each with its own strengths and ecosystems. While macOS is renowned for its polished user experience and seamless integration with Apple's hardware, Linux offers unparalleled flexibility, customization, and open-source innovation. But what happens when you need to run macOS software on a Linux machine? This is where Darling, an open-source compatibility layer, comes into play.

What is Darling?

Darling is an open-source compatibility layer that allows macOS applications to run on Linux. It's built on the same principles as Wine, which enables Windows applications to run on Unix-like systems, but with a specific focus on macOS. The project was started by Joseph Edge, a software engineer with a passion for cross-platform compatibility. Since its inception, Darling has grown into a robust solution, supported by a community of developers and users.

How Does Darling Work?

At its core, Darling translates macOS APIs into their Linux equivalents. This process involves several layers of abstraction:

Kernel-Level Emulation: Darling uses a lightweight kernel extension to emulate macOS-specific system calls. This ensures that applications can interact with the underlying hardware and system services as if they were running on a real macOS machine.
User-Space Compatibility: On top of the kernel-level emulation, Darling provides a user-space environment that mimics macOS's behavior. This includes emulating the macOS filesystem, networking stack, and other essential services.
Application Binary Compatibility: By translating macOS application binaries, Darling allows users to run their favorite macOS applications without the need for recompilation or significant modifications.

Setting Up Darling

Setting up Darling on a Linux machine is straightforward, thanks to the efforts of the community. Here's a step-by-step guide to get you started:

Install Dependencies: Before you begin, ensure you have the necessary dependencies installed. These include build-essential, git, and other development tools. On Debian-based systems like Ubuntu, you can install them using:

bash sudo apt-get update sudo apt-get install build-essential git
Clone the Darling Repository: Use git to clone the Darling repository from GitHub:

bash git clone https://github.com/darlinghq/darling.git cd darling
Build and Install: Darling provides a straightforward build process. Run the following commands to build and install the compatibility layer:

bash ./wip.sh

This command will set up the build environment and start compiling Darling. The process may take some time, depending on your system's specifications.
Run macOS Applications: Once installed, you can start running macOS applications. For example, to run the classic macOS application "Calculator," you can use:

bash darling -- /Applications/Calculator.app/Contents/MacOS/Calculator

Challenges and Limitations

While Darling has come a long way, it's important to understand its limitations. Not all macOS applications will run flawlessly, and some may require additional configuration or patches. Here are some common challenges:

Graphics and UI: macOS applications often rely on specific graphics APIs that may not be fully supported on Linux. This can result in rendering issues or UI glitches. However, the community is actively working to improve graphics support.
System Services: Some macOS applications depend on system services that are not available on Linux. These services include hardware acceleration, certain system APIs, and more. While Darling can emulate many of these services, some may still be missing.
Performance: Running macOS applications on Linux through Darling can be less performant compared to running them natively on macOS. This is due to the overhead of translation and emulation. However, performance has been improving steadily with each release.

Community Contributions

One of the strengths of the Darling project is its vibrant community. Developers and users contribute to the project in various ways:

Bug Reports and Fixes: Users report issues they encounter while running macOS applications, and the community works to fix them. This collaborative approach ensures that the compatibility layer keeps improving.
Feature Requests: As the project grows, new features are added based on community feedback. This ensures that Darling remains relevant and useful for a wide range of users.
Documentation and Support: The community provides extensive documentation and support, making it easier for new users to get started and for experienced users to troubleshoot issues.

Use Cases for Darling

Despite its limitations, Darling has numerous use cases, especially for developers and enthusiasts:

Testing macOS Applications: Developers can use Darling to test their macOS applications on Linux without the need for a Mac. This can save time and resources, especially for cross-platform development.
Running Legacy macOS Software: Some users rely on legacy macOS software that is no longer supported on newer versions of macOS. Darling allows them to continue using this software on Linux.
Educational Purposes: Students and educators can use Darling to teach and learn about macOS APIs and system services in a Linux environment.

Takeaway

Running macOS software on Linux has never been easier thanks to the open-source compatibility layer Darling. While it's not a perfect solution and has its limitations, it offers a powerful way to bridge the gap between two distinct ecosystems. For developers, testers, and enthusiasts, Darling is an invaluable tool that expands the possibilities of cross-platform compatibility. As the project continues to evolve, we can expect even more macOS applications to run seamlessly on Linux, further blurring the lines between these two powerful operating systems.

在Linux上运行macOS软件