Cctools 65 Jun 2026

A game development studio reported reducing their iOS app size from 187 MB to 152 MB simply by using ld64 from cctools 65 with -dead_strip_dylibs and -merge_zero_fill_sections . These linker flags aggressively remove unused code and compress zero-filled data segments.

The Apple cross-compilation toolchain just got an upgrade. 🛠️ Say hello to cctools 65. Here is why developers should care: 🧵👇 cctools 65