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, 101 insertions, 0 deletions

diff --git a/net-im/skype4/pkg-message b/net-im/skype4/pkg-message
new file mode 100644
index 000000000000..c5cd071490fe
--- /dev/null
+++ b/net-im/skype4/pkg-message
@@ -0,0 +1,101 @@
+1. Minimum OS version.
+
+Skype is a Linux binary package that we run on FreeBSD via our Linux compat.
+In order for Skype to work OK, you need your kernel and modules to be:
+- post 2011-05-03 in on HEAD
+- post 2011-05-08 in on 7,8-STABLE
+The port tries to check for this, but there is a smaller or bigger interval for
+which this can't be done automatically. So in case of any trouble please make
+sure you run kernel/modules built from sources after above dates.
+Tests were only done on HEAD and 8-STABLE with linux-fc10, and I don't think it
+can work with fc4.
+
+
+2. Sound
+
+Since the OSS interface was removed, Skype now uses linux-alsa compat packages.
+By default you get one device corresponding to your default OSS dsp device (so
+Skype will use it for ringing, incoming voice and mic). If that doesn't suit
+needs, you can map the other dsp devices for example by editing
+/compat/linux/etc/alsa/pcm/pcm-oss.conf. You need to (re)start Skype after you
+edit this file in order to get Skype pick up the changes.
+Adding the following to the stock file, and then starting Skype and choosing
+in Options-->Sound Devices:   Speakers: oss1
+will let you use the second dsp (usually the front panel connectors for your
+headphones, while still hearing the call ringing and other notification on the
+first dsp device (presumably the one you connect your speakers to).
+pcm.oss1 {
+        type oss
+        device /dev/dsp1
+        hint {
+                description "Open Sound System"
+        }
+}
+
+ctl.oss1 {
+        type oss
+        device /dev/mixer1
+        hint {
+                description "Open Sound System"
+        }
+}
+
+
+3. Video
+
+3.1. Receiving video
+Should work out of the box. Please make sure you have
+Options --> Video Devices --> Enable Skype Video checked.
+
+3.2. Sending video
+Skype uses /dev/videoX (usually /dev/video0). This device node is created by
+the drivers for your webcam (eg. multimedia/webcamd). If you selected the VIDEO
+option (default) multimedia/webcamd will be pulled in.
+First please make sure your webcam works with the drivers webcamd provides; you
+can use multimedia/pwcview's pwcview(1) to check that you get a good image from
+your webcam; if you get a good image, you will get video in Skype also.
+
+It also uses v4l2 interface hence you very likely need to have linux_v4l2wrapper
+kernel module (which you either have in base on recent HEAD or the port will
+install for you); you need to load the module before stating Skype:
+# kldload linux_v4l2wrapper
+To make it permanent you can:
+# echo 'linux_v4l2wrapper_load="YES"' >> /boot/loader.conf
+
+
+4. SMSes
+
+You can send SMSes with this version (provided you have Skype credit, of course).
+Check Options --> SMS for details.
+
+
+5. Screen sharing
+
+You should be able to receive and send.
+Please make sure you have Options --> Video Devices --> Enable Skype Video
+checked to use this feature (yes, even if you don't use video).
+
+
+6. Skype Access
+
+Doesn't work and it is likely not very probable it  will ever work since it
+uses a lot of Linux-specific things.
+
+
+7. Next version ...
+
+.. is in net-im/skype-devel. It probably works worse that this version. Use it
+at your own risk.
+
+
+8. Problems and bug reports
+
+First of all, please understand that this is a closed, binary Linux application
+that makes use for some more-or-less cutting edge Linux features/interfaces,
+etc. As such, making it work on FreeBSD is mainly a question of keeping our
+linuxulator as close as possible to the Linux kernel, and our Linux compat
+ports up to date.
+
+When reporting problems at very least we need to know the output of:
+$ uname -a; sysctl compat.linux | head -2; grep OVERRIDE_LINUX_ /etc/make.conf
+the skype version you are using, and hardware details (eg. webcam) if related.