ToolchainRoadmap

Revision 10 as of 2005-04-25 07:15:25

Clear message

Toolchain Roadmap

Status

Introduction

Review toolchain status and strategy for Breezy

Rationale

  • Much improved Java support.
  • Better error reporting from C and C++ frontend
  • Fortran 90 support
  • Better optimisations from C compiler
  • Faster compilation
  • Better standards compliance

Scope and Use Cases

  • gcc-4.0
  • g++-4.0 and associated ABI transition
  • glibc 2.3.5

Implementation Plan

Already done:

  • Change "gcc" default to 4.0
  • Change "g77" default to 3.4
  • change "cpp" default to 4.0
  • Upload glibc-2.3.5
  • Change powerpc, ia64 to nptl-only

TODO:

  • Change "g++" default to 4.0
    • - Rename library packages to deal with ABI break.
  • Change "gcj" default to 4.0
  • Enable ppc64 glibc
  • Change sparc to nptl-only
  • Add to Breezy release notes intention to drop linuxthreads for remaining arch's.
  • Drop gcc-2.95 (also means dropping chill)
  • Look at tweaking gcc wrapper to look for archaic gcc build options (-O6, etc.)
  • Binutils update (Sparc64 TLS support)

Data Preservation and Migration

Packages Affected

All packages to some degree:

  • o Poorly written C applications that don't work with stricter parser o Poorly written C++ applications that don't work with stricter parser

User Interface Requirements

Outstanding Issues

Coordinating with Debian - confirm that they will follow the same library rename plan.

UDU BOF Agenda

  • Status update (some work will be done prior to UDU)
  • C++ ABI transition plan (if transitions are still pending)
  • libssp and GCC 4.0 ?

UDU Pre-Work