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Showing posts from April, 2018

How To Solve Class Not Found Problem in OMNeT++

If you are new to Omnet, it is possible to do some mistakes when you are coding your first program. I used to TOSSIM for some months, then I have started to use Omnet. When I am coding my first program on Omnet, I got this problem at first start to simulating code :
Error in module (omnetpp::cModule) ag (id=1) during network setup: Class "blogkafem" not found -- perhaps its code was not linked in, or the class wasn't registered with Register_Class(), or in the case of modules and channels, with Define_Module()/Define_Channel(). At first you suppose this problem caused by linked problem of Eclipse (it is avaible and default omnet editor). Almost, all of the web sites are focusing on this sitution to solve this problem (you probably know, if you had searched on google). This approach is prettym much correct.

In this article, I focused an other reason which is caused this problem.

For example, we assume, our code is like this in the .NED file:
simple blogkafem

OMNeT Installation Problems And Solutions in Ubuntu

When I am trying to install Omnet++ 5.3 on Ubuntu 16.04 After I type "make" on terminal, I was getting this errors : In function ‘intpar_t omnetpp::safeAdd(intpar_t, intpar_t)’: error: ‘__builtin_add_overflow’ was not declared in this scope
if (__builtin_add_overflow(a, b, &res))
^ In function ‘intpar_t omnetpp::safeMul(intpar_t, intpar_t)’: error: ‘__builtin_mul_overflow’ was not declared in this scope
if (__builtin_mul_overflow(a, b, &res))
Makefile:100: recipe for target '/opt/omnetpp-5.3/out/gcc-release/src/sim/cdynamicexpression.o' failed
make[2]: *** [/opt/omnetpp-5.3/out/gcc-release/src/sim/cdynamicexpression.o] Error 1
make[2]: *** Bitmemiş işler için bekliyor....
Makefile:117: recipe for target 'sim' failed
make[1]: *** [sim] Error 2
Makefile:28: recipe for target 'allmodes' failed
make: *** [allmodes] Error 2
Solving of this …