I am quite new to linux and have recently installed Ubunutu 18.04 LTS.
I am trying to install NASA GMAT (available at https://sourceforge.net/projects/gmat/). After downloading .tar.gz I extracted the archive and found a README file. The command line version of GMAT found in /bin of the file works perfectly fine.
However, when I try to run "./GMAT_Beta" I get the following error:
./GMAT_Beta./GMAT_Beta: error while loading shared libraries: libpng15.so.15: cannot open shared object file: No such file or directory
Now I have checked via Synaptics Package Manger and using apt command that I have libpng16-16 - installed version "1.6.34-1ubuntu.18.04.2".
I want to install libpng15 for GMAT to function. Can someone please guide me: 1. Where and how to install libpng15 from? 2. Will I have to remove the already installed version or can they co-exist together?
$ dpkg -L libpng16-16
(or packages.ubuntu.com/bionic-updates/amd64/libpng16-16/filelist ) all file names are unique for libpng16-16. "libpng15" : No Ubuntu packages. Suggest, install from source sourceforge.net/projects/libpng/files/libpng15 .... Note : The two versions can be installed at the same time. No issues.