Update CentOS base to 6.5, add userland ports

The Fedora 10 infrastructure ports have been in use since June 2009 and, while
having served a great deed, have become unsupported upstream and hence affected
by unfixed security vulnerabilities. In addition to that, many recent Linux
binaries need newer libc / stdlibc++ versions.

This commit adds the linux-c6- userland as drop-in replacement for the -f10
infrastructure, as well as upgrading the linux_base-c6 port to CentOS 6.5.

If you want to switch to linux-c6 ports, please define at /etc/make.conf:

    OVERRIDE_LINUX_BASE_PORT=c6
    OVERRIDE_LINUX_NONBASE_PORTS=c6

Additionally, please add the following line to /etc/sysctl.conf:

    compat.linux.osrelease=2.6.18

Upgrading procedures are shown in /usr/ports/UPDATING.

This work has been inspired by Artyom Mirgorodskiy's post to emulation@ in
November 2013, using and extending mav@'s work. It has been tested extensively
and most reported issues were already fixed. Please report any additional bug
or "features" to the emulation mailing list.

Many thanks to: mav@, rene@, allanjude@, netchild@, antoine@, everyone who's
filed Issues and Pull requests on GitHub,

PR:		186820
Differential Revision:	https://reviews.freebsd.org/D793
Reviewed by:	allanjude, antoine, bapt, rene
Approved by:	portmgr (antoine, bapt)
Approved by:	koobs (mentor)
Sponsored by:	Perceivon Hosting Inc.

1 files changed, 29 insertions, 0 deletions

diff --git a/UPDATING b/UPDATING
index d6f59d9845b..b7962fdbf63 100644
--- a/UPDATING
+++ b/UPDATING
@@ -5,6 +5,35 @@ they are unavoidable.
 You should get into the habit of checking this file for changes each time
 you update your ports collection, before attempting any port upgrades.
 
+20140922:
+  AFFECTS: users of emulators/linux_base-f10 and emulators/linux_base-c6
+  AUTHOR: xmj@FreeBSD.org
+
+  The complete drop-in replacement linux-c6 port infrastructure is in ports 
+  and will shortly replace the current linux-f10- ports as default.
+
+  To switch to the linux-c6 infrastructure you should:
+
+  0. Backup all your vital information!
+  1. Remove the current linux base port and all linux-f10- ports.
+  2. Add the following lines to /etc/make.conf:
+       OVERRIDE_LINUX_BASE_PORT=c6
+       OVERRIDE_LINUX_NONBASE_PORTS=c6
+  3. Make sure no linux application is running.
+  4. Set appropriate sysctl (compat.linux.osrelease=2.6.18).
+  5. Install emulation/linux-c6.
+
+  That should be enough in most circumstances. If you experience difficulties,
+  please be sure to expand step 1 to:
+
+  1a. Remove all ports which depend on linux base port.
+  1b. Remove linux base port.
+  1c. Clean /compat/linux/ directory.
+
+  Should you encounter any other difficulties not fixed by these extended
+  steps, please submit an issue report in Bugzilla and send an email to FreeBSD's
+  emulation@ mailing list.
+
 20140909:
   AFFECTS: users seeing build errors about missing *.la files
   AUTHOR: tijl@FreeBSD.org