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Aaron D. Lee 1e07630b49 Update docs and comments for jpeglib migration (v4.2.0)

- Replace jpegio references with jpeglib in comments/docstrings
- Update sanitize-for-image.sh to use system Python 3.11+ (no pyenv)
- Update rpi/patches/README.md for jpeglib world
- Add AUR build artifacts to .gitignore

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

2026-01-11 11:19:16 -05:00

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RPi Patches

This directory contains patches for dependencies that need modifications to build on ARM64.

Current Status (v4.2+)

As of Stegasoo 4.2, we use jpeglib instead of jpegio. The jpeglib build process is handled inline in setup.sh and includes:

Cloning from GitHub (PyPI tarball missing headers)
Downloading libjpeg headers for each version (6b through 9f)
Patching setup.py to skip turbo/mozjpeg (need cmake-generated headers)

See setup.sh for the full implementation.

Legacy: jpegio Patches (v4.1 and earlier)

The jpegio/ directory contains patches for the old jpegio dependency, which required removing x86-specific -m64 compiler flags. These are no longer used but kept for reference.

jpeglib Helper Script

The jpeglib/install-jpeglib-arm64.sh script is a standalone version of the jpeglib build process. It's not used by setup.sh (which has the logic inline) but can be useful for manual testing or debugging.

Structure

patches/
  jpegio/           # Legacy (v4.1) - not used in v4.2+
    arm64.patch
    apply-patch.sh
  jpeglib/          # Reference script for manual builds
    install-jpeglib-arm64.sh

Adding New Patches

If a new dependency needs ARM64 patches:

Create a directory: patches/<package>/
Add patch files or helper scripts
Update setup.sh to apply the patch during installation

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