I have a CentOs 6.10 (x86_64) setup to install omnetpp. Currently I have no success with omnetpp version 5.5.1.
First problem was It needs gcc > 4.8, because of cflags like -sed=c++11.
Gcc 4.8 > is not supported by default, installed version of gcc is 4.4.7. And I couldn't handle package dependencies to install it manually.
And then QT5 dependency, it is also not one of the supported packages for centos6. (can use tk/tcl instead of qt5)
So, I have decided to install older versions of omnet, Which version is more suitable so I don't need to solve library/package issues.
Update: I successfully installed version 4.5. However It would be better if I could install newer versions.
Thanks for any suggestions.