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OZ1SEJ
Asked: 2020-07-06 13:40:12 +0800 CST

Troubles with libpng12.so.0 - no version information available?

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I downloaded GMAT and ran it according to the instructions:

$ ./GMAT-R2018a 
./GMAT-R2018a: error while loading shared libraries: libpng12.so.0: cannot open shared object file: No such file or directory

So I thought libpng was missing. So I downloaded, built and installed libpng 1.6.37 from source.

$ ./GMAT-R2018a 
./GMAT-R2018a: error while loading shared libraries: libpng12.so.0: cannot open shared object file: No such file or directory

So apparently I needed specifically version 1.2 of libpng, which I downloaded, built and installed from source:

$ ./GMAT-R2018a 
./GMAT-R2018a: error while loading shared libraries: libpng12.so.0: cannot open shared object file: No such file or directory

So apparently somehow GMAT couldn't see the file, so I made a symlink:

$ ln -s /usr/local/lib/libpng12.so.0 libpng12.so.0
$ ./GMAT-R2018a 
./GMAT-R2018a: error while loading shared libraries: libpng12.so.0: cannot open shared object file: No such file or directory

So I found a post somewhere saying that I should add a repository:

$ sudo add-apt-repository ppa:linuxuprising/libpng12
$ sudo apt update
$ sudo apt install libpng12-0

So now when I run GMAT, I get a new error:

$ ./GMAT-R2018a 
./GMAT-R2018a: /usr/local/lib/libpng12.so.0: no version information available (required by /home/steen/GMAT/GMAT/R2018a/bin/../lib/libwx_gtk2u_core-3.0.so.0)

And now I'm all out of ideas. Anyone?

libpng 20.04

1 Answers

  1. Best Answer

    The main problem here is the libpng12, which is removed from the repositories after 16.04 LTS.
    To install it use special PPA:

    sudo add-apt-repository ppa:linuxuprising/libpng12
sudo apt update
sudo apt install libpng12-0

    Then download and extract GMAT:

    cd ~/Downloads
wget https://deac-riga.dl.sourceforge.net/project/gmat/GMAT/GMAT-R2018a/gmat-ubuntu-x64-R2018a.tar.gz
tar -xf gmat-ubuntu-x64-R2018a.tar.gz
cd GMAT/R2018a
./GMAT-R2018a

    So you have to remove problematic library with:

    sudo rm /usr/local/lib/libpng12.so.0
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