20050901: LDM PIPE errors for GEMPAK decoders

>From: "Patrick L. Francis" <address@hidden>
>Organization: BGSU
>Keywords: 200509012226.j81MQPjo003761

Hi Patrick,

>I have rebuilt one of my machines from scratch with the latest
>kernel, ldm, and gempak... after reviewing the docs for a
>very long time, I seem to have embarassingly missed
>something simple... some of the data is writing, some
>is not... a sample of verbose output is available here:
>
>http://weather.bgsu.edu/files/ldmd.txt

It looks like the decoders are not executing at all.

>it is probably something simple so I apologize, my
>eyes are no longer focusing ...

I logged onto your machine as 'ldm' and did the following:

ldm@XXXXXX:/etc$ cd ~ldm/decoders
ldm@XXXXXX:/etc$ ldd dcuair
                libg2c.so.0 => not found
        libm.so.6 => /lib/tls/libm.so.6 (0x4001b000)
        libgcc_s.so.1 => /lib/libgcc_s.so.1 (0x4003e000)
        libc.so.6 => /lib/tls/libc.so.6 (0x40047000)
        /lib/ld-linux.so.2 => /lib/ld-linux.so.2 (0x40000000)

Notice that the library 'libg2c.so.0' is not being found.  I found this
to be true for all GEMPAK decoders you had copied to ~ldm/decoders.
This is the cause of the PIPE errors in your ~ldm/logs/ldmd.log file.

I see that you are running a version of Linux that has the 2.6 kernel:

ldm@XXXXXX:~/decoders$ uname -a
Linux XXXXXX 2.6.8 #1 SMP Thu Sep 1 15:40:33 EDT 2005 i686 GNU/Linux

I also see this is Debian Linux:

ldm@XXXXXX:/etc$ cat /proc/version
Linux version 2.6.8 (root@XXXXXX) (gcc version 3.3.5 (Debian 1:3.3.5-13)) #1 
SMP Thu Sep 1 15:40:33 EDT 2005

The Linux GEMPAK binary was built on a Fedora Core 3 system here at Unidata.

Perhaps you did not install the package that contains libg2c.so when
you installed Debian Linux?  I would check to see if there is a package
that does contain libg2c.so.0 and install it if there is one.
Otherwise, you may be forced to attempt a GEMPAK build from source code.

Since we do not run Debian Linux here at Unidata, we are not experts on
its ins and outs.  You might want to contact:

Erick Nelson <address@hidden>

at the College of DuPage to see what they had to do to get GEMPAK to
run under Debian.

The other, and perhaps better alternative, is to send an inquiry to the
gembud email list that explains that you are trying to get a binary
distribution of GEMPAK to work under Debian, but libg2c.so is not being
found.

Cheers,

Tom Yoksas
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>From address@hidden  Thu Sep  1 17:20:37 2005

> Notice that the library 'libg2c.so.0' is not being found.  

thanks ;) ... withi debian's wonderful package management
system the answer = 

aptitude install libg2c0
(or apt-get install)

restart, she is running flawlessly!

I used to run redhat / fedora etc.. but found 
debian to be much easier to administer... I'm just
not completely familiar with all of the minutia yet.

thanks tom...

--pat