theiphoneos1project/writeups

Purpose

This repository is documentation, not an application or buildable codebase. It collects engineering writeups from “The iPhone OS 1 Project,” focused on creating software for early Objective-C/iPhone OS 1 environments.

Primary entry point: README.md.

Documentation Modules

Two independent technical writeups form the repository’s core content:

• MicroInjector development experience: MicroInjector/WRITEUP.md

• Custom ld64 linker work for Objective-C 1 platforms: ld64/WRITEUP.md

Each module also contains supporting images in its local Images directory:

• MicroInjector/Images

• ld64/Images

MicroInjector Stage

The MicroInjector material documents the design and development process for an injector-oriented component used in the project. Its architectural boundary is conceptual and documented rather than implemented in this repository.

Relevant paths:

• MicroInjector/WRITEUP.md

• MicroInjector/Images

Custom Linker Stage

The ld64 material covers a custom linker required to target Objective-C 1-era platforms, explicitly including iPhone OS 1. This is the key platform/toolchain compatibility boundary represented by the repo.

Relevant paths:

• ld64/WRITEUP.md

• ld64/Images

Primary Flow

Reader navigation flows from the repository overview into one of the specialized writeups:

1. Start at README.md.

2. Select either the injector-development narrative or linker/toolchain narrative.

3. Consume inline/supporting visual material from the corresponding Images directory.

There is no executable runtime, service integration, deployment infrastructure, or source-level control flow visible in the supplied tree.

Licensing Boundary

The repository separates code and documentation licensing:

• MIT license for source-code material: LICENSE

• CC BY 4.0 for writeups: LICENSE-WRITEUPS

This distinction matters for downstream reuse: technical prose and images are governed separately from any referenced project code.