Re: [gentoo-user] Bluetooth disappeared because of MSWindows?

[Alan McKinnon]

On 06/12/2015 01:31, Mick wrote:
> I came across a rather peculiar phenomenon today with my laptop.  I realised 
> that my bluetooth controller was nowhere to be found.  I thought running 
> hciconfig would bring it up, but all it did was to complain that there was no 
> device found.  rfkill would not list it either.
> 
> Modprobing various modules did not produce a device, so searching for answers 
> I thought of booting into MSWindows.  After I enabled the device in MSWindows 
> I rebooted into Linux and was surprised to see the bluetooth controller was 
> visible again in lspci.
> 
> How come that switching off the device in one OS, affects the other?  :-/
> 
> What should I do next time to enable bluetooth from within Linux?
> 
> 
> PS. There's a parallel to this with the same laptop.  Some years ago audio 
> would randomly never come up at boot and no amount of alsactl could wake it 
> up.  A swift reboot into MSWindows would reset audio and all would work fine 
> in Linux thereafter.  Some cursory troubleshooting at the time didn't help me 
> much.  I don't expect that the two issues are related, but thought of 
> mentioning it just in case.
> 


We've had a few cases of things like this on the list over the years. It
always end up probably a Linux driver bug. Here's what seems to happen:

The hardware needs to be enabled/shutdown/fiddled or whatever in some
magic way that windows knows about but linux doesn't. Booting into
Windows applies the magic so when you reboot into Linux it's now in a
state Linux can use.

Read the kernel docs for your driver, the odds are good you have to
apply a driver tweak for your hardware to make it work right.

Then do a Google search for your hardware and laptop types, see what the
interwebz have to say.

-- 
Alan McKinnon
alan.mckin...@gmail.com

Re: [gentoo-user] libpcre && blender: Confusion?

[Meino . Cramer]

Alan McKinnon  [15-12-06 08:24]:
> On 06/12/2015 05:47, meino.cra...@gmx.de wrote:
> > Hi,
> > 
> > from builder.blender.org I regularily download the daily developers
> > build of blender.
> > 
> > In the last few days the developers seem to include code to access
> > libpcre into blender -- which will not be found on my system.
> > 
> > eix says:
> > #>eix libpcre 
> > [I] dev-libs/libpcre
> >  Available versions:  (3) 7.9-r1 8.35 8.36 ~8.37-r2 8.38
> >{bzip2 +cxx doc +jit libedit pcre16 pcre32 +readline 
> > +recursion-limit static-libs unicode zlib ABI_MIPS="n32 n64 o32" 
> > ABI_PPC="32 64" ABI_S390="32 64" ABI_X86="32 64 x32"}
> >  Installed versions:  8.38(3)(17:22:37 11/26/15)(bzip2 cxx jit pcre16 
> > readline recursion-limit unicode zlib -libedit -pcre32 -static-libs 
> > ABI_MIPS="-n32 -n64 -o32" ABI_PPC="-32 -64" ABI_S390="-32 -64" ABI_X86="64 
> > -32 -x32")
> >  Homepage:http://www.pcre.org/
> >  Description: Perl-compatible regular expression library
> > 
> > For me it reads as if libpcre-8.38 is included, which is version "3"
> > (due to the litlle "(3)").
> > 
> > ldd blender says:
> > #>ldd blender
> > linux-vdso.so.1 (0x7f58c1f2f000)
> > librt.so.1 => /lib64/librt.so.1 (0x7f58c1b08000)
> > libfreetype.so.6 => /usr/lib64/libfreetype.so.6 (0x7f58c185d000)
> > libpthread.so.0 => /lib64/libpthread.so.0 (0x7f58c1641000)
> > libpcre.so.3 => not found
> > libxml2.so.2 => /usr/lib64/libxml2.so.2 (0x7f58c12d6000)
> > libGLU.so.1 => /usr/lib64/libGLU.so.1 (0x7f58c1053000)
> > libGL.so.1 => /usr/lib64/opengl/nvidia/lib/libGL.so.1 
> > (0x7f58c0d1f000)
> > libX11.so.6 => /usr/lib64/libX11.so.6 (0x7f58c09d8000)
> > libXi.so.6 => /usr/lib64/libXi.so.6 (0x7f58c07c7000)
> > libXxf86vm.so.1 => /usr/lib64/libXxf86vm.so.1 (0x7f58c05c1000)
> > libutil.so.1 => /lib64/libutil.so.1 (0x7f58c03be000)
> > libdl.so.2 => /lib64/libdl.so.2 (0x7f58c01ba000)
> > libc.so.6 => /lib64/libc.so.6 (0x7f58bfe1b000)
> > /lib64/ld-linux-x86-64.so.2 (0x7f58c1d1)
> > libm.so.6 => /lib64/libm.so.6 (0x7f58bfb17000)
> > libstdc++.so.6 => /usr/lib/gcc/x86_64-pc-linux-gnu/4.9.3/libstdc++.so.6 
> > (0x7f58bf803000)
> > libgcc_s.so.1 => /usr/lib/gcc/x86_64-pc-linux-gnu/4.9.3/libgcc_s.so.1 
> > (0x7f58bf5ec000)
> > libz.so.1 => /lib64/libz.so.1 (0x7f58bf3d6000)
> > libbz2.so.1 => /lib64/libbz2.so.1 (0x7f58bf1c6000)
> > libpng16.so.16 => /usr/lib64/libpng16.so.16 (0x7f58bef9)
> > libnvidia-tls.so.358.16 => /usr/lib64/libnvidia-tls.so.358.16 
> > (0x7f58bed8c000)
> > libnvidia-glcore.so.358.16 => /usr/lib64/libnvidia-glcore.so.358.16 
> > (0x7f58bd12b000)
> > libXext.so.6 => /usr/lib64/libXext.so.6 (0x7f58bcf18000)
> > libxcb.so.1 => /usr/lib64/libxcb.so.1 (0x7f58bccf4000)
> > libXau.so.6 => /usr/lib64/libXau.so.6 (0x7f58bcaf)
> > libXdmcp.so.6 => /usr/lib64/libXdmcp.so.6 (0x7f58bc8ea000)
> > 
> > 
> > Before I screw up the library pool with a quick and dirty symlink
> > based on my assumption above...I better ask... :)
> > 
> > What exactly is libpcre.so.3 or for what stands it for?
> > Is the installed libpcre the one which is needed?
> > How can I fix it?
> 
> libpcre provides a regex library for apps to use. The version you have
> will probably not work, as it is .so version 1 and blender wants version
> 3. So a symlink is not the correct way to go.
> 
> You are using the daily dev build so most likely those devs aren't using
> Gentoo and do have libpcre.so.3 from somewhere.
> 
> How critical is this error anyway? I can't imagine it would stop blender
> from working entirely. Do you download a source or a binary daily build?
> 
> Some things to try:
> 
> - symlink it anyway and see if the regex functions in blender now work
> - if blender is a binary download, search it's files for libpcre.so*
> Maybe it's there and you just need to tweak LDPATH
> 
> -- 
> Alan McKinnon
> alan.mckin...@gmail.com
> 
> 

The blender download is a binary blob. For a longer time I used to
build blender myself from a daily snapshot of the repository, but
this became more and more complicate and finally I gave up.
I started to download the binaries directly from the build bot
builder.blender.org.
This works - until now.
The error stops the start of blender.
ldd gives "libprce.so.3 not found" (see above) indicating, that
blender won't start at all.
The binary blob does not contain any libpcre -- I checked that
before. 

Well, I think I have to open a bugreport for Ton...

Anyway: Thanks for your help, Alan!
Best regards
Meino

Re: [gentoo-user] libpcre && blender: Confusion?

[Alan McKinnon]

On 06/12/2015 05:47, meino.cra...@gmx.de wrote:
> Hi,
> 
> from builder.blender.org I regularily download the daily developers
> build of blender.
> 
> In the last few days the developers seem to include code to access
> libpcre into blender -- which will not be found on my system.
> 
> eix says:
> #>eix libpcre 
> [I] dev-libs/libpcre
>  Available versions:  (3) 7.9-r1 8.35 8.36 ~8.37-r2 8.38
>{bzip2 +cxx doc +jit libedit pcre16 pcre32 +readline +recursion-limit 
> static-libs unicode zlib ABI_MIPS="n32 n64 o32" ABI_PPC="32 64" ABI_S390="32 
> 64" ABI_X86="32 64 x32"}
>  Installed versions:  8.38(3)(17:22:37 11/26/15)(bzip2 cxx jit pcre16 
> readline recursion-limit unicode zlib -libedit -pcre32 -static-libs 
> ABI_MIPS="-n32 -n64 -o32" ABI_PPC="-32 -64" ABI_S390="-32 -64" ABI_X86="64 
> -32 -x32")
>  Homepage:http://www.pcre.org/
>  Description: Perl-compatible regular expression library
> 
> For me it reads as if libpcre-8.38 is included, which is version "3"
> (due to the litlle "(3)").
> 
> ldd blender says:
> #>ldd blender
>   linux-vdso.so.1 (0x7f58c1f2f000)
>   librt.so.1 => /lib64/librt.so.1 (0x7f58c1b08000)
>   libfreetype.so.6 => /usr/lib64/libfreetype.so.6 (0x7f58c185d000)
>   libpthread.so.0 => /lib64/libpthread.so.0 (0x7f58c1641000)
>   libpcre.so.3 => not found
>   libxml2.so.2 => /usr/lib64/libxml2.so.2 (0x7f58c12d6000)
>   libGLU.so.1 => /usr/lib64/libGLU.so.1 (0x7f58c1053000)
>   libGL.so.1 => /usr/lib64/opengl/nvidia/lib/libGL.so.1 
> (0x7f58c0d1f000)
>   libX11.so.6 => /usr/lib64/libX11.so.6 (0x7f58c09d8000)
>   libXi.so.6 => /usr/lib64/libXi.so.6 (0x7f58c07c7000)
>   libXxf86vm.so.1 => /usr/lib64/libXxf86vm.so.1 (0x7f58c05c1000)
>   libutil.so.1 => /lib64/libutil.so.1 (0x7f58c03be000)
>   libdl.so.2 => /lib64/libdl.so.2 (0x7f58c01ba000)
>   libc.so.6 => /lib64/libc.so.6 (0x7f58bfe1b000)
>   /lib64/ld-linux-x86-64.so.2 (0x7f58c1d1)
>   libm.so.6 => /lib64/libm.so.6 (0x7f58bfb17000)
>   libstdc++.so.6 => /usr/lib/gcc/x86_64-pc-linux-gnu/4.9.3/libstdc++.so.6 
> (0x7f58bf803000)
>   libgcc_s.so.1 => /usr/lib/gcc/x86_64-pc-linux-gnu/4.9.3/libgcc_s.so.1 
> (0x7f58bf5ec000)
>   libz.so.1 => /lib64/libz.so.1 (0x7f58bf3d6000)
>   libbz2.so.1 => /lib64/libbz2.so.1 (0x7f58bf1c6000)
>   libpng16.so.16 => /usr/lib64/libpng16.so.16 (0x7f58bef9)
>   libnvidia-tls.so.358.16 => /usr/lib64/libnvidia-tls.so.358.16 
> (0x7f58bed8c000)
>   libnvidia-glcore.so.358.16 => /usr/lib64/libnvidia-glcore.so.358.16 
> (0x7f58bd12b000)
>   libXext.so.6 => /usr/lib64/libXext.so.6 (0x7f58bcf18000)
>   libxcb.so.1 => /usr/lib64/libxcb.so.1 (0x7f58bccf4000)
>   libXau.so.6 => /usr/lib64/libXau.so.6 (0x7f58bcaf)
>   libXdmcp.so.6 => /usr/lib64/libXdmcp.so.6 (0x7f58bc8ea000)
> 
> 
> Before I screw up the library pool with a quick and dirty symlink
> based on my assumption above...I better ask... :)
> 
> What exactly is libpcre.so.3 or for what stands it for?
> Is the installed libpcre the one which is needed?
> How can I fix it?

libpcre provides a regex library for apps to use. The version you have
will probably not work, as it is .so version 1 and blender wants version
3. So a symlink is not the correct way to go.

You are using the daily dev build so most likely those devs aren't using
Gentoo and do have libpcre.so.3 from somewhere.

How critical is this error anyway? I can't imagine it would stop blender
from working entirely. Do you download a source or a binary daily build?

Some things to try:

- symlink it anyway and see if the regex functions in blender now work
- if blender is a binary download, search it's files for libpcre.so*
Maybe it's there and you just need to tweak LDPATH

-- 
Alan McKinnon
alan.mckin...@gmail.com

Re: [gentoo-user] Re: Open RC problem?

[Neil Bothwick]

On Sat, 5 Dec 2015 14:47:28 +0100, Remy Blank wrote:

> > I discovered zerotier-one some months ago and wouldn't be without it
> > now, especially when they released an Android client. What problems
> > did you have?  
> 
> zerotier looks awesome. Do you have an ebuild for it? A quick search
> didn't return any results. Do you run your own controller?

No, I use the generic Linux installer from their web site, and use
changedetection.com to keep me informed of updates. No, I don't run my
own controller. An ebuild would be handy for that.


-- 
Neil Bothwick

RAM disk is *not* an installation procedure.


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[gentoo-user] Re: Open RC problem?

[Remy Blank]

Neil Bothwick wrote on 2015-12-04 23:11:
> On Fri, 04 Dec 2015 17:05:49 +, Peter Humphrey wrote:
> 
>> Thanks for the reply, Alan. I did some more poking around and found
>> that removing zerotier-one and netmount from the default run-level
>> fixed it. Or maybe it was just coincidence again - this box certainly
>> does some odd things at times.
> 
> Unlikely, because the RAID stuff is started in the boot runlevel,
> whereas zerotier-one is in the default runlevel.
>  
>> That zerotier thing was an attempt at linking to my mobile phone, but
>> it's no longer interfering now. I never did quite manage to get it
>> working anyway.
> 
> I discovered zerotier-one some months ago and wouldn't be without it now,
> especially when they released an Android client. What problems did you
> have?

zerotier looks awesome. Do you have an ebuild for it? A quick search
didn't return any results. Do you run your own controller?

-- Remy



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Re: [gentoo-user] Re: Open RC problem?

[Mick]

On Saturday 05 Dec 2015 13:55:32 Neil Bothwick wrote:
> On Sat, 5 Dec 2015 14:47:28 +0100, Remy Blank wrote:
> > > I discovered zerotier-one some months ago and wouldn't be without it
> > > now, especially when they released an Android client. What problems
> > > did you have?
> > 
> > zerotier looks awesome. Do you have an ebuild for it? A quick search
> > didn't return any results. Do you run your own controller?
> 
> No, I use the generic Linux installer from their web site, and use
> changedetection.com to keep me informed of updates. No, I don't run my
> own controller. An ebuild would be handy for that.

Neil, could you please spare a couple of words to explain how the zerotier 
architecture works?
-- 
Regards,
Mick


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Re: [gentoo-user] Re: Open RC problem?

[Neil Bothwick]

On Sat, 5 Dec 2015 14:13:00 +, Mick wrote:

> Neil, could you please spare a couple of words to explain how the
> zerotier architecture works?

I can do it in one word - magic!

It's basically a P2P VPN. You set up a network on the controller and then
join it from various machines. Those machines register with the network
controller, and receive an IP address from it, but the actual
communication is direct between the computers. So your data is private
and if both computers are on the same LAN, you still get full LAN speed
between them.

It use a TUN/TAP interface, for example on this laptop:

zt0: flags=4163  mtu 2800
inet 10.252.252.6  netmask 255.255.255.0  broadcast 10.252.252.255
ether 46:96:8c:9c:02:e1  txqueuelen 500  (Ethernet)

So I can connect to 10.252.252.6 from any computer on my zerotier
network, but you cannot. You may even have the same IP address for one of
the computers on your network.

It's open source and if you want optimum security, or want to run a
network of more than 10 computers without paying a fee, you can run your
own controller.


-- 
Neil Bothwick

Format: (v.) to erase irrevocably and unintentionally.
(n.) The process of such erasure.


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Re: [gentoo-user] Re: Open RC problem?

[Mick]

On Saturday 05 Dec 2015 14:31:57 Neil Bothwick wrote:
> On Sat, 5 Dec 2015 14:13:00 +, Mick wrote:
> > Neil, could you please spare a couple of words to explain how the
> > zerotier architecture works?
> 
> I can do it in one word - magic!

:-)


> It's basically a P2P VPN. You set up a network on the controller and then
> join it from various machines. Those machines register with the network
> controller, and receive an IP address from it, but the actual
> communication is direct between the computers. So your data is private
> and if both computers are on the same LAN, you still get full LAN speed
> between them.
> 
> It use a TUN/TAP interface, for example on this laptop:
> 
> zt0: flags=4163  mtu 2800
> inet 10.252.252.6  netmask 255.255.255.0  broadcast 10.252.252.255
> ether 46:96:8c:9c:02:e1  txqueuelen 500  (Ethernet)

So is this a userspace tunnel implementation, with the controller playing the 
role of a remote VPN gateway?  Like OpenVPN?  What encryption does it use?
 

> So I can connect to 10.252.252.6 from any computer on my zerotier
> network, but you cannot. You may even have the same IP address for one of
> the computers on your network.
> 
> It's open source and if you want optimum security, or want to run a
> network of more than 10 computers without paying a fee, you can run your
> own controller.

Wouldn't IPSec be more preferable?  I'm trying to understand the benefit/need 
for yet another tunneling solution.
-- 
Regards,
Mick


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Re: [gentoo-user] Open RC problem?

[Peter Humphrey]

On Saturday 05 December 2015 10:18:01 Neil Bothwick wrote:
> On Sat, 05 Dec 2015 09:44:07 +, Peter Humphrey wrote:
> > > I discovered zerotier-one some months ago and wouldn't be without it
> > > now, especially when they released an Android client. What problems
> > > did you have?
> > 
> > I think I had an understanding gap in setting it up on the Android
> > device. And I found it was only good for file transfers, which I don't
> > need much.
> 
> I can't think how you set it up wrong. AFAIR I only gave it the network
> ID to join and off it went. I use it for all sorts of stuff from my
> phone, the only notable exception being file transfers...

Maybe it's time to have another look at it. Thanks for the encouragement.

-- 
Rgds
Peter

[gentoo-user] mouse cannot use until retach

[Wallance Lee]

Hi, everyone.
I have a very starge phenomenon for a long time. I note that when I boot my 
computer with mouse attached, the mouse couldn't be recognized on sddm login 
ui. But I can see my mouse powered before sddm started. Strangely mouse can be 
recognized after I pull it out and insert it in again. I cannot confirm whether 
it is caused by sddm.


Any help would be very appreciately.
Thanks.





--

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[gentoo-user] Bluetooth disappeared because of MSWindows?

[Mick]

I came across a rather peculiar phenomenon today with my laptop.  I realised 
that my bluetooth controller was nowhere to be found.  I thought running 
hciconfig would bring it up, but all it did was to complain that there was no 
device found.  rfkill would not list it either.

Modprobing various modules did not produce a device, so searching for answers 
I thought of booting into MSWindows.  After I enabled the device in MSWindows 
I rebooted into Linux and was surprised to see the bluetooth controller was 
visible again in lspci.

How come that switching off the device in one OS, affects the other?  :-/

What should I do next time to enable bluetooth from within Linux?


PS. There's a parallel to this with the same laptop.  Some years ago audio 
would randomly never come up at boot and no amount of alsactl could wake it 
up.  A swift reboot into MSWindows would reset audio and all would work fine 
in Linux thereafter.  Some cursory troubleshooting at the time didn't help me 
much.  I don't expect that the two issues are related, but thought of 
mentioning it just in case.
-- 
Regards,
Mick


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Re: [gentoo-user] Open RC problem?

[Peter Humphrey]

On Friday 04 December 2015 22:11:50 Neil Bothwick wrote:

> I discovered zerotier-one some months ago and wouldn't be without it now,
> especially when they released an Android client. What problems did you
> have?

I think I had an understanding gap in setting it up on the Android device. 
And I found it was only good for file transfers, which I don't need much.

-- 
Rgds
Peter

Re: [gentoo-user] Open RC problem?

[Neil Bothwick]

On Sat, 05 Dec 2015 09:44:07 +, Peter Humphrey wrote:

> > I discovered zerotier-one some months ago and wouldn't be without it
> > now, especially when they released an Android client. What problems
> > did you have?  
> 
> I think I had an understanding gap in setting it up on the Android
> device. And I found it was only good for file transfers, which I don't
> need much.

I can't think how you set it up wrong. AFAIR I only gave it the network
ID to join and off it went. I use it for all sorts of stuff from my
phone, the only notable exception being file transfers...


-- 
Neil Bothwick

Half of being smart is knowing what you're dumb at.


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Re: [gentoo-user] Open RC problem?

[Peter Humphrey]

On Friday 04 December 2015 22:11:50 Neil Bothwick wrote:
> On Fri, 04 Dec 2015 17:05:49 +, Peter Humphrey wrote:
> > Thanks for the reply, Alan. I did some more poking around and found
> > that removing zerotier-one and netmount from the default run-level
> > fixed it. Or maybe it was just coincidence again - this box certainly
> > does some odd things at times.
> 
> Unlikely, because the RAID stuff is started in the boot runlevel,
> whereas zerotier-one is in the default runlevel.

Yes, I know. I'm clutching at straws here. I think this motherboard must 
have some kind of timing difficulty with my SSDs.

-- 
Rgds
Peter

Re: [gentoo-user] Re: Console fonts revisited

[Peter Humphrey]

On Friday 04 December 2015 18:24:44 Jonathan Callen wrote:

> media-fonts/terminus-font only requires X11 packages if USE=X is
> enabled (adding deps on x11-apps/mkfontdir and media-fonts/encodings)
> or USE=pcf is enabled (adding a dep on x11-apps/bdftopcf).  All these
> deps are compile-time only.  USE=pcf installs the fonts used in X11,
> USE=psf installs the fonts used on the console.

Ah. Thanks for pointing that out. After negating all the USE flags I didn't 
need I'm now lighter by several x11-libs/*.

-- 
Rgds
Peter

Re: [gentoo-user] Console fonts revisited

[Peter Humphrey]

On Friday 04 December 2015 13:58:10 waltd...@waltdnes.org wrote:

> Speaking of console fonts, is there a 24 pixel-wide font available, or
> are there font-editors that can easily double or triple the width of a
> font?  I have a 1920x1080 monitor, and 8-pixel-wide fonts are unreadable
> with a 240-column-wide display.  I currently have...
> 
> consolefont="sun12x22"

My monitor is 27" at 1920x1080. I don't know of a font 24 pixels wide - 
that's twice the width you and I are using; I have ter-122n from terminus-
fonts, which I find pleasant and legible. I tried the Sun fonts but disliked 
them. (That's putting it mildly!)

> ...in /etc/conf.d/consolefont.  Remember to run...
> 
> rc-update add consolefont boot
> 
> ...to make it take effect.  That's 160 columns across, and readable, but
> still too much.  A 24-pixel-wide font would give me 80 columns across.

That sounds to me too much like going backwards 25 years  :)

-- 
Rgds
Peter

Re:[gentoo-user] mouse cannot use until retach

[Wallance Lee]

I cannot use my mice at sddm-greeter but I can use my synaptics. When I login 
my kde, I just retach my mice, and it works again.
I am use sddm 0.13-r1 and kf-5.15, plasma-5.4.1, qt-5.4.2, gcc-4.9.3, 
glibc-2.21-r1.



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在 2015-12-06 08:46:41，"Wallance Lee"  写道：

Hi, everyone.
I have a very starge phenomenon for a long time. I note that when I boot my 
computer with mouse attached, the mouse couldn't be recognized on sddm login 
ui. But I can see my mouse powered before sddm started. Strangely mouse can be 
recognized after I pull it out and insert it in again. I cannot confirm whether 
it is caused by sddm.


Any help would be very appreciately.
Thanks.





--

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[gentoo-user] libpcre && blender: Confusion?

[Meino . Cramer]

Hi,

from builder.blender.org I regularily download the daily developers
build of blender.

In the last few days the developers seem to include code to access
libpcre into blender -- which will not be found on my system.

eix says:
#>eix libpcre 
[I] dev-libs/libpcre
 Available versions:  (3) 7.9-r1 8.35 8.36 ~8.37-r2 8.38
   {bzip2 +cxx doc +jit libedit pcre16 pcre32 +readline +recursion-limit 
static-libs unicode zlib ABI_MIPS="n32 n64 o32" ABI_PPC="32 64" ABI_S390="32 
64" ABI_X86="32 64 x32"}
 Installed versions:  8.38(3)(17:22:37 11/26/15)(bzip2 cxx jit pcre16 
readline recursion-limit unicode zlib -libedit -pcre32 -static-libs 
ABI_MIPS="-n32 -n64 -o32" ABI_PPC="-32 -64" ABI_S390="-32 -64" ABI_X86="64 -32 
-x32")
 Homepage:http://www.pcre.org/
 Description: Perl-compatible regular expression library

For me it reads as if libpcre-8.38 is included, which is version "3"
(due to the litlle "(3)").

ldd blender says:
#>ldd blender
linux-vdso.so.1 (0x7f58c1f2f000)
librt.so.1 => /lib64/librt.so.1 (0x7f58c1b08000)
libfreetype.so.6 => /usr/lib64/libfreetype.so.6 (0x7f58c185d000)
libpthread.so.0 => /lib64/libpthread.so.0 (0x7f58c1641000)
libpcre.so.3 => not found
libxml2.so.2 => /usr/lib64/libxml2.so.2 (0x7f58c12d6000)
libGLU.so.1 => /usr/lib64/libGLU.so.1 (0x7f58c1053000)
libGL.so.1 => /usr/lib64/opengl/nvidia/lib/libGL.so.1 
(0x7f58c0d1f000)
libX11.so.6 => /usr/lib64/libX11.so.6 (0x7f58c09d8000)
libXi.so.6 => /usr/lib64/libXi.so.6 (0x7f58c07c7000)
libXxf86vm.so.1 => /usr/lib64/libXxf86vm.so.1 (0x7f58c05c1000)
libutil.so.1 => /lib64/libutil.so.1 (0x7f58c03be000)
libdl.so.2 => /lib64/libdl.so.2 (0x7f58c01ba000)
libc.so.6 => /lib64/libc.so.6 (0x7f58bfe1b000)
/lib64/ld-linux-x86-64.so.2 (0x7f58c1d1)
libm.so.6 => /lib64/libm.so.6 (0x7f58bfb17000)
libstdc++.so.6 => /usr/lib/gcc/x86_64-pc-linux-gnu/4.9.3/libstdc++.so.6 
(0x7f58bf803000)
libgcc_s.so.1 => /usr/lib/gcc/x86_64-pc-linux-gnu/4.9.3/libgcc_s.so.1 
(0x7f58bf5ec000)
libz.so.1 => /lib64/libz.so.1 (0x7f58bf3d6000)
libbz2.so.1 => /lib64/libbz2.so.1 (0x7f58bf1c6000)
libpng16.so.16 => /usr/lib64/libpng16.so.16 (0x7f58bef9)
libnvidia-tls.so.358.16 => /usr/lib64/libnvidia-tls.so.358.16 
(0x7f58bed8c000)
libnvidia-glcore.so.358.16 => /usr/lib64/libnvidia-glcore.so.358.16 
(0x7f58bd12b000)
libXext.so.6 => /usr/lib64/libXext.so.6 (0x7f58bcf18000)
libxcb.so.1 => /usr/lib64/libxcb.so.1 (0x7f58bccf4000)
libXau.so.6 => /usr/lib64/libXau.so.6 (0x7f58bcaf)
libXdmcp.so.6 => /usr/lib64/libXdmcp.so.6 (0x7f58bc8ea000)


Before I screw up the library pool with a quick and dirty symlink
based on my assumption above...I better ask... :)

What exactly is libpcre.so.3 or for what stands it for?
Is the installed libpcre the one which is needed?
How can I fix it?

Thank you very much in advance for any help!
Best regards,
Meino