macOS linker warnings in macOS ventura
还没有人认领这个 Issue。
评估
- 难度
- 4/5
- 预计耗时
- 3-5 天
- 新手友好度
- 35/100
- Issue 类型
- 缺陷
- 描述清晰度
- 需要澄清
- 活跃度
- 停滞
- 技术栈
- macos, python
调研方向
未指定文件、测试或入口点。首先定位 CPython 的 macOS 扩展模块链接器配置以及 -undefined dynamic_lookup 的使用位置；将当前行为与 ld64 的 -bundle_loader 选项进行比较。完成的标准是解决 Ventura/Xcode 14+ 警告，同时不破坏扩展模块加载。
由索引模型根据 Issue 内容生成。
描述
Turns out ld shipped with Xcode 14+ emits a warning when using -undefined dynamic_lookup.`
ld: warning: -undefined dynamic_lookup may not work with chained fixups
Some investigation reveals that in fact -undefined dynamic_lookup doesn't work when:
- Link a shared library with the option
- Link it with a program that uses the chained-fixup introduced from macOS 12 and iOS 15
This is because -undefined dynamic_lookup uses lazy-bindings and they won't be bound while dyld fixes-up by traversing chained-fixup info.
However, we build extension modules with as bundles (-bundle) and they are loaded only through
dlopen, so it's safe to use -undefined dynamic_lookup in theory. So the warning produced by ld64 is
likely to be a false-positive.
ld64 also provides the -bundle_loader <executable> option, which allows resolving symbols defined in the executable symbol table while linking. It behaves almost the same with -undefined dynamic_lookup, but it makes the following changes:
- Require that unresolved symbols among input objects must be defined in the executable.
- Lazy symbol binding will lookup only the symbol table of the bundle loader executable. (
-undefined dynamic_lookuplookups all symbol tables as flat namespace)
See "New Features" subsection under "Linking" section for chained fixup
developer.apple.com/documentation/xcode-release-notes/xcode-13-release-notes for more information.
Also, check the same problem in ruby where most of this information is taken from.
- 主要语言
- Python
- 星标
- 77.2k
- 派生
- 36k
- 平均合并
- 1 天 9 小时
- 30 天内合并 PR
- 558
贡献指南
从这里开始
- 先读完整个 Issue，再读项目的贡献指南。
- 在 Issue 下留言说明你要接手 —— 这能避免两个人做同样的事。
- Fork 仓库，在一个分支上完成修改。
- 提交 Pull Request，并在描述里引用这个 Issue 编号。
python/cpython 的其他 Issue
-
docs pending
难度 2/5 1-3 小时 新手友好度 78/100
-
stdlib type-feature
难度 2/5 1-3 小时 新手友好度 78/100
-
stdlib type-feature
难度 2/5 1-3 小时 新手友好度 72/100
-
build type-bug
难度 2/5 1-3 小时 新手友好度 76/100
-
stdlib topic-email type-feature
难度 2/5 1-3 小时 新手友好度 70/100
相似的 Issue
-
area/auth bug comp/agent P3 platform/discord type/security
难度 2/5 1-3 小时 新手友好度 88/100
NousResearch/hermes-agent#117848 ·
-
难度 2/5 1-3 小时 新手友好度 74/100
bancolombia/sentinel#23 ·
-
test md 未关闭CI
难度 2/5 1-3 小时 新手友好度 74/100
-
integration:quickjs org:external priority:backlog topic:code-interpreter topic:middleware type:feature
难度 2/5 1-3 小时 新手友好度 74/100
langchain-ai/deepagents#6450 ·
-
bug client
难度 2/5 1-3 小时 新手友好度 88/100