Add macOS support#39
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- Fix PlatformExtensionName() to return "dylib" on macOS instead of "so" - Replace hardcoded Windows paths in the Rust loader with platform-aware logic: derive root_dir from the plugin path, use UNREAL_RUST_TARGET_DIR env var or relative fallback for the target library path - Use cfg-gated constants for platform-specific library extensions (.dll/.so/.dylib) and library names (with lib prefix on Unix) - Guard .pdb debug symbol copy with #[cfg(target_os = "windows")] - Add aarch64-apple-darwin and x86_64-apple-darwin Cargo targets Closes MaikKlein#20 Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
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Summary
Adds macOS (Apple Silicon + Intel) support to the Rust plugin loader and UE C++ plugin code. Tested on macOS with UE 5.7 — the loader successfully resolves and loads the Rust plugin dylib, registers types, and the editor runs. Verified Rust gameplay code running at runtime:
UKismetSystemLibrary::print_string()called from Rusttick()displays on screen during Play.Changes:
RustPlugin.cpp: Returndylibextension onPLATFORM_MAC(was incorrectly returningso). Usereinterpret_castforGetDllExportresults (clang rejectsstatic_castfromvoid*to function pointers).unreal-rust-loader/src/lib.rs: Cross-platform rewrite — platform-gated library names/extensions,dladdr-based runtime path resolution (replaces hardcoded Windows paths), ad-hoc codesigning after hot-reload copy (macOS kills processes loading unsigned dylibs), proper error handling throughout.unreal-rust-loader/Cargo.toml: Addlibcdependency on Unix fordladdr/Dl_info..cargo/config.toml: Addaarch64-apple-darwinandx86_64-apple-darwintarget entries.Addresses #20.
Notes
reinterpret_castchange also fixes compilation on Linux (clang strict mode) — not just macOS.UNREAL_RUST_TARGET_DIRenv var →dladdr-derived path relative to the loader's own location →target/release/relative fallback.codesign --force --sign -to avoid SIGKILL from code signature validation.ue57-compat).🤖 Generated with Claude Code
Co-Authored-By: Claude Opus 4.6 noreply@anthropic.com