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Add extractlib support in binutils#7120

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waruqi merged 30 commits intodevfrom
ar
Dec 12, 2025
Merged

Add extractlib support in binutils#7120
waruqi merged 30 commits intodevfrom
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@waruqi waruqi commented Dec 11, 2025

  • Before adding new features and new modules, please go to issues to submit the relevant feature description first.
  • Write good commit messages and use the same coding conventions as the rest of the project.
  • Please commit code to dev branch and we will merge into master branch in feature
  • Ensure your edited codes with four spaces instead of TAB.

  • 增加新特性和新模块之前,请先到issues提交相关特性说明,经过讨论评估确认后,再进行相应的代码提交,避免做无用工作。
  • 编写友好可读的提交信息,并使用与工程代码相同的代码规范,代码请用4个空格字符代替tab缩进。
  • 请提交代码到dev分支,如果通过,我们会在特定时间合并到master分支上。
  • 为了规范化提交日志的格式,commit消息,不要用中文,请用英文描述。

@waruqi waruqi added this to the v3.0.6 milestone Dec 11, 2025
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Summary of Changes

Hello @waruqi, 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!

This pull request integrates a new extractlib feature into Xmake's binutils, enabling the extraction of individual object files from static libraries. The core C implementation provides robust support for AR archives, including handling complex member naming schemes and ensuring unique output filenames. This functionality is exposed via a Lua API and a new command-line utility, making it accessible for build processes and direct user interaction. A placeholder for MSVC lib extraction is also included, laying the groundwork for broader static library support.

Highlights

  • New extractlib Functionality: Introduces a new feature to extract object files from static libraries, enhancing Xmake's binary utility capabilities.
  • AR Archive Support: Implements robust extraction for AR format (.a) libraries, including handling extended names, skipping symbol tables, detecting object files, and resolving name conflicts by generating unique filenames.
  • Lua API Integration: Exposes the library extraction functionality through a Lua interface (binutils.extractlib), making it accessible for scripting within Xmake.
  • Command-line Utility: Provides a convenient command-line tool (xmake l utils.binary.extractlib) for users to perform extractions directly from the terminal.
  • MSVC Lib Placeholder: Includes a dedicated module for MSVC lib format (.lib) extraction, with a placeholder for future implementation, laying the groundwork for broader static library support.
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Code Review

This pull request introduces a new extractlib feature to binutils for extracting static libraries, providing an implementation for ar archives and a placeholder for MSVC .lib files. The feature is exposed to Lua and as a command-line utility. The changes are well-structured. However, I've identified a few issues: a potential buffer overflow vulnerability in path construction, a logic issue that could prevent extraction from valid archives with long filenames, and a bug in the new command-line utility where it doesn't handle extraction failures. My review includes specific suggestions to address these points.

@waruqi waruqi merged commit 7544d22 into dev Dec 12, 2025
63 of 65 checks passed
@waruqi waruqi deleted the ar branch December 12, 2025 01:54
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