Xcode 27 expands agentic coding toolset with Gemini integration

Xcode 27 will let developers natively use Google Gemini, in addition to Claude Code and OpenAI Codex, to plan, write, and review code.
Ars Technica

Using IBM XLC/XLF in XCode?

Anyone know how to set up XCode to use IBM's compilers, rather than gcc? I'm especially interested in setting up XCode to use XLF for some Fortran libraries, which are then linked to C/Obj-C programs.