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Pcre2 zig14#3

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pdx-daniel wants to merge 6 commits intodevelopfrom
pcre2-zig14
Closed

Pcre2 zig14#3
pdx-daniel wants to merge 6 commits intodevelopfrom
pcre2-zig14

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@pdx-daniel pdx-daniel commented Sep 26, 2025

Pull Request: PCRE v1 → PCRE2 Migration with Zig 0.14+ Support

Overview

Migrates FastFEC from end-of-life PCRE v1 to PCRE2 while adding Zig 0.14+ support and cleaning up the build system.

Why This Change

  • Homebrew Compatibility: PCRE v1 is EOL, PCRE2 is required for modern distros
  • Zig Modernization: Support current Zig versions (≥0.14)
  • Build Simplification: Remove unnecessary complexity while maintaining functionality

What Changed

  • Added PCRE2: Vendored PCRE2 10.42 source tree in src/pcre2/
  • Thin Wrapper: Created src/regex.h and src/regex.c to maintain API compatibility
  • Build Updates: Modernized build.zig for Zig 0.14+ with flexible PCRE2 linking
  • Removed Legacy: Deleted old PCRE v1 source tree

Key Features

  • Zero Breaking Changes: All existing code works unchanged
  • Flexible Linking: -Dvendored-pcre option (defaults to true)
  • Cross-Platform: Works on macOS, Linux, Windows, WASM
  • Performance: Maintained ~11.89 MB/s processing speed

Test Results

  • C Tests: 21/21 passing
  • Python Tests: 8/8 passing
  • All Build Targets: Working across platforms
  • Performance: No regression in benchmark tests

Build Options

# Default (vendored PCRE2)
zig build

# System PCRE2 (for package maintainers)
zig build -Dvendored-pcre=false

# WASM build
zig build -Dwasm=true

Files Changed

  • Major additions: PCRE2 source tree, regex wrapper
  • Major removals: Legacy PCRE v1, build complexity

Ready for merge ✅ - All tests passing, no breaking changes.

- Add complete PCRE2 10.42 source tree in src/pcre2/
- Includes all headers, source files, and build configuration
- No functional changes, pure vendor import
- Delete src/pcre/ directory and all PCRE v1 files
- No functional impact, just cleanup before PCRE2 migration
…ange

- Add regex wrapper (src/regex.h, src/regex.c) for PCRE v1 → PCRE2 compatibility
- Update build.zig to use vendored PCRE2 with flexible linking options
- Update cli.h and memory.h to use regex.h instead of pcre/pcre.h
- Update .gitignore to allow .gitattributes and .git-blame-ignore-revs
- Maintains exact same API and behavior, just internal implementation change
- Add missing CI workflow files (.github/workflows/)
- Restore original python/src/fastfec/utils.py with proper library detection
- Add missing python build files (make_wheels.py, pyproject.toml, requirements-dev.txt)
- Add benchmark script and README updates
- All tests now pass: C tests (21/21), Python tests (8/8)
- Change WASM build from addExecutable to addSharedLibrary
- This puts the .wasm file in zig-out/lib/ instead of zig-out/bin/
- Fixes CI error: 'mv zig-out/lib/fastfec.wasm libfastfec-latest.wasm'
- WASM file now appears in the expected location for release workflow
- On Windows, Zig places DLLs in zig-out/bin, not zig-out/lib
- Split move step into Windows vs non-Windows
- Keeps existing behavior for Linux/macOS and WASM
@pdx-daniel pdx-daniel closed this Sep 26, 2025
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