Prior editions struggled with overhead when recalculating priorities for tens of thousands of queued worker tasks in real time. Cctools 65 introduces an optimized . By sorting ready tasks natively within a multi-tiered pointer structure, the system inserts, updates, and deletes target tasks in logarithmic time rather than linear
Before dissecting the update, it’s essential to understand the foundation. Cctools (Compiler Tools) is a collection of binaries and scripts used primarily on Apple’s Darwin operating system (including MacOS, iOS, watchOS, and tvOS simulators). These tools include: cctools 65 new
The macro assembler ca65 has also seen a steady stream of improvements. The most recent fix (November 2025) corrected the handling of the ( .not / ! ). Previously, the operator only worked correctly when it appeared at the very beginning of a full expression; elsewhere it could produce unexpected results. The fix not only resolves that bug but also added new unit tests to prevent future regressions. Cctools (Compiler Tools) is a collection of binaries