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 * '''Launchpad entry''': https://blueprints.launchpad.net/distros/ubuntu/+spec/feisty-toolchain
 * '''Packages affected''': gcc*, gcj*, glibc, binutils

== Summary ==

Define features and versions to use in feisty, demoting/removing old compiler versions; use
the upstream versions which are available now.

== Implementation ==

 * glibc: 2.5, as available in feisty, using DT_GNU_HASH support.
 * binutils-2.17.0.50.6, as available in feisty, using DT_GNU_HASH support.
 * gcc: 4.1, as available in feisty; upgrade to the 4.1.2 release or the 4.1.2 branch until UVF.
   * C++: backport the C++ visibility changes to 4.1; needs changes in packages to use this feature (i.e. KDE).
 * gcj: Decide before UVF about gcj-4.2 or gcj-4.1, depending on the upstream 4.2 release date. If 4.2 is released/in prerelease state, the java packages and libgcc[14] will be built from the gcj-4.2 sources.
 * Change the long double data type on sparc and powerpc from 64bit to 128bit, essential for glibc-2.4
   * Requires rebuild of packages exposing "long double" in the API of the package (Ldbl128Main, Ldbl128Universe); we don't require renaming of the library packages, only supporting dist-upgrades from edgy to feisty.
   * Requires rebuild of packages using the changed ABI.

== BoF agenda and discussion ==

 * Define versions to use in feisty
 * Select proposals suggested at https://wiki.ubuntu.com/EdgyPlusOneToolchainRoadmap
 * Demoting/removing old compiler versions
   * gcc-4.0
 * long-double-128 change on powerpc and sparc
   * Ldbl128Main
   * Ldbl128Universe

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