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MOPAC2012 64-bit on CentOS 6 Log Out | Topics | Search
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John Keller
Unregistered guest
Posted on Tuesday, February 17, 2015 - 3:16 pm:   

The MOPAC2012_for_CentOS-6.zip file downloaded Feb 2015 contains the 64-bit version of MOPAC2012, which can be installed as in the "MOPAC2009" instructions on the WebMO support website.
But also, in my experience the libiomp5.so file that is included must - on CentOS systems - be copied (as su) into the /usr/lib64 directory before MOPAC2012 will run. The advice on the openmopac.net website (http://openmopac.net/Discussions/Problems%20Installing%20MOPAC.html) to edit .bashrc with a LD_LIBRARY_PATH=/mopacinstalldirectory did not work for me.
Marcus Bond
Unregistered guest
Posted on Monday, February 23, 2015 - 5:21 pm:   

I have been having this same problem with the Feb. 2015 download of MOPAC2012 (to replace an existing installation that had timed out). I have placed libiomp5.so in /opt/mopac (per the installation instructions), in usr/lib64 (as suggested here), and in every other lib directory I can find. Regardless, WebMO still gives the "libiomp5.so not found" error. Running MOPAC2012 from the command line using the example file works fine, however. Stumped. Do I need to upgrade to WebMO 15?
JR Schmidt
Username: Schmidt

Post Number: 448
Registered: 11-2006
Posted on Monday, February 23, 2015 - 5:50 pm:   


You probably need to add the location of libiomp5.so into your LD_LIBRARY_PATH. One way to do this (for WebMO) is to edit run_mopac.cgi to add the line:

$ENV{'LD_LIBRARY_PATH'}.= ":/opt/mopac";

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