Project:Toolchain/23.0 profile transition

A project management page for the 23.0 profile transition.

General information

• The tracker for the 23.0 profiles is bug #876891
• Ongoing work can be found on a Github pull request 27903 (please check regularly, commits will be cherry-picked for merging and more will be added)

Specific issues, all arches

bug #675050: Enable GCC's -fstack-clash-protection by default

• control useflag added to gcc-13
• useflag forced on hardened and 23.0
• done
• may want to port also to a later gcc-12 release?

bug #818376: adopt SHT_RELR/DT_RELR relative relocation format

• requires now a control useflag for binutils, "-z pack-relative-relocs"
• requires on upgrade dependency on glibc-2.36
• too new?

bug #831045: remove USE=cli default and inline into ebuilds

• trivial
• done

bug #849875: remove USE=dri default, clean up make.defaults

• trivial
• done

bug #876881: make merged usr the default configuration

• the changes in the profiles are trivial (renaming)
• requires now testing
• requires on upgrade a migration guide, news item in the works
• what do we do with openrc profiles?

bug #876923: enable "-z relro -z now" by default in the linker

• -z relro is already default since 2017
• -z now is enabled by the hardened code in gcc and can be moved out into vanilla there
• control useflag added to gcc-13
• useflag forced on hardened and 23.0
• done
• may want to port also to a later gcc-12 release?

bug #878119: rename clang to llvm in profile names

• implementation trivial

bug #878157: add systemd/hardened profiles, make systemd/selinux inherit them

• fairly easy

Specific issues, single arches

bug #515694: Update MIPS profiles to use ABI-specific CHOST

• MIPS-specific
• In default/linux/23.0/mips..., set the correct CHOST. That's all.
• requires now testing
• requires consensus in the mips team on what to do
• requires on upgrade the usual CHOST-changing acrobatics

bug #882815: transition ppc64le 23.0 profiles to 128-bit IEEE long double ABI

• arch-specific
• Fedora finally switched recently
• GH pull request for gcc plumbing
• migration procedure?

bug #882825: align to 32-bit rather than 16-bit on m68k with -malign-int

• arch-specific
• this breaks about just everything and thus makes a complex migration necessary
• adjustments to glibc will be required (?)