post: shipping zig libraries with C ABI

[xhwanlan]

No description provided.

[gemini-code-assist]

Summary of Changes

Hello @xhwanlan, I'm Gemini Code Assist¹! I'm currently reviewing this pull request and will post my feedback shortly. In the meantime, here's a summary to help you and other reviewers quickly get up to speed!

此拉取请求新增了一篇博客文章，旨在为Zig开发者提供一个全面的指南，说明如何在不公开源代码的情况下，通过C应用二进制接口（ABI）分发Zig库。文章详细介绍了如何利用Zig的comptime特性和灵活的构建系统，实现从Zig代码自动生成C头文件，从而促进Zig库与C/C++项目的无缝集成。

Highlights

• C ABI兼容性: 详细介绍了如何通过extern struct和pub export fn在Zig中暴露C ABI兼容的结构体和函数。
• 编译时符号导出: 展示了如何利用Zig的comptime机制，通过自定义exports函数自动从Zig结构体中导出符号，简化了大量函数和结构体的导出工作。
• 自动化头文件生成: 阐述了如何通过Zig的构建系统（build.zig）将符号导出和C头文件生成逻辑分离，并实现自动化。这涉及创建不同的模块和利用export_mode标志在编译时进行条件处理。
• 构建系统配置: 提供了build.zig的完整配置示例，展示了如何设置模块依赖、构建库以及添加一个用于生成头文件的可执行任务。
• 手动生成选项: 说明了如何修改build.zig以允许通过zig build gen_main命令手动触发头文件生成，而不是在每次构建库时都自动生成。

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[gemini-code-assist]

Code Review

这篇博文通过对话的形式，清晰地解释了如何使用 Zig 的编译时特性和构建系统来分发二进制库而不泄露源码，这个方法非常巧妙。文章内容翔实，示例代码也很丰富。我发现了一些代码示例中的拼写错误，修正后能让读者更好地理解和复制代码。整体来说，这是一篇高质量的技术分享。

[jiacai2050]

container 没必要extern 吧？只是暴露内部字段

[xhwanlan]

示例有点问题，如果函数有用相关结构，需要用extern保证内存布局符合C。

[jiacai2050]

能画个图表示这四个模块的关系吗？

[xhwanlan]

现在不能正确渲染mermaid，例如2023-09-05-bog-gc-1。
后来想放截图，发现不知道放images文件夹哪。最后只好放渲染后的svg了。

[jiacai2050]

@xihale 帮看看呢，按说应该能渲染mermaid

[xihale]

fixed via #85

[jiacai2050]

Thanks!

期待以后的作品。