new(github.com/rui314/mold): mold 2.41.0#13352
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Fast drop-in ELF linker. CMake build; vendors its third-party deps. Linux-only (ELF; macOS support dropped upstream).
The runner's default g++ is too old for C++20 — '#include <bit>' fatal: file not found. Build with gnu.org/gcc 14 (CC/CXX) and depend on its libstdc++ at runtime, the established pantry pattern for C++20 (poppler, openexr).
Forcing CC to gnu.org/gcc's absolute path broke cmake's shared-library flag detection (mold-wrapper.so linked without -shared -> undefined main). The gnu.org/gcc build dep already shadows cc/c++ on PATH; cmake detects them as GNU and links the shared lib correctly -- the poppler/openexr pattern.
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Adds mold (https://github.com/rui314/mold) — Rui Ueyama's fast drop-in ELF linker. CMake build (
cmake.orgonly dep — mold vendors zlib/zstd/blake3/tbb underthird-party/). Linux-only (linux/x86-64,linux/aarch64): mold is an ELF linker and upstream dropped macOS/Mach-O support; there are no macOS release assets.