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authorMatthias Maier <tamiko@43-1.org>2018-06-24 15:04:54 -0500
committerMatthias Maier <tamiko@43-1.org>2018-06-24 15:05:54 -0500
commitadc8be1f2369dee9c6f4834370cdfd42144334dc (patch)
treef4b59a80b61eda892b2944d0b59bcedfcede84ad
parent2018-06-23-mpfr-4-update: revise news item (diff)
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2018-06-23-mpfr-4-update: withdraw news item
Signed-off-by: Matthias Maier <tamiko@43-1.org>
-rw-r--r--2018-06-23-mpfr-4-update/2018-06-23-mpfr-4-update.en.txt35
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diff --git a/2018-06-23-mpfr-4-update/2018-06-23-mpfr-4-update.en.txt b/2018-06-23-mpfr-4-update/2018-06-23-mpfr-4-update.en.txt
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-Title: dev-libs/mpfr 4 upgrade
-Author: Matthias Maier <tamiko@gentoo.org>
-Posted: 2018-06-23
-Revision: 2
-News-Item-Format: 2.0
-Display-If-Installed: <dev-libs/mpfr-4
-
-dev-libs/mpfr-4 introduced an ABI and soname change that has the potential
-of breaking the compiler toolchain. In order to minimize potential problems
-it is strongly recommended to rebuild mpc and gcc immediately after mpfr
-has been updated to version 4.
-
-If you have enabled testing keywords globally (e.g. ~amd64), or keyworded
-mpfr-4 you are advised to update mpfr, mpc and gcc first:
-
- emerge --ask --oneshot ">=dev-libs/mpfr-4" dev-libs/mpc sys-devel/gcc
-
-If this command requires you to unmask dev-libs/mpfr-4 first, then do not
-do anything!
-
-Detailed explanation:
-
-libmpfr.so is used by libmpc.so (provided by dev-libs/mpc), as well as by
-internal executables (e.g. cc1, cc1plus) of sys-devel/gcc. Appropriate
-subslots in mpfr and slot-operators in dependencies in mpc and gcc will
-cause a rebuild of mpc and gcc after an upgrade of mpfr.
-
-However, after mpfr-4 is installed and mpc rebuiltd, but *before* gcc is
-rebuilt, gcc will be in an inconsistent state wherein symbols from
-incorrect library versions of mpfr might get used. This can result in
-segfaults and internal compiler errors. It is therefore important to
-rebuild gcc immmediately after mpc.
-
-A detailed update guide with troubleshoot section can be found on the wiki:
-https://wiki.gentoo.org/wiki/Mpfr4-update-guide