omnetpp: command not found

[ruidazeng]

Platform

• OMNeT++ version: [e.g. 5.4]
• OS: [e.g. Ubuntu 18.04]

Describe the bug
On a fresh installation, my omnetpp works fine. However, when I reboot the machine, the terminal will then give this error omnetpp: command not found when I type in omnetpp in an attempt to start the simulator.

I don't believe this is in the installation guide.

[torokati44]

Section 4.4 (Environment Variables) of the Installation Guide for OMNeT++ 5.6.1 says:

OMNeT++ needs its bin/ directory to be in the path. To add bin/ to PATH temporarily (in the current shell only), change into the OMNeT++ directory and source the setenv script

Emphasis mine. Further instructions on how to do this permanently follow in said document.

[Vonfry]

I have the same problem and <omnetpp>/bin is already added to PATH in current shell.

ldd prints vdso, pthread, dl, libc which can be found. What did I miss? Or how do I debug the problem.

By the way, could I build ide locally(from git repo) instead of download the prebuild one(from release one)?

[torokati44]

In the raw git repo there is no omnetpp executable (rather, launcher script) in the bin folder yet, it is copied there by make, by the utils target (which is a dependency of the default target too).

This is off-topic, but:
To build a release tarball from the git repo: cd releng; ./build-omnetpp-in-docker - you can edit the variable values in that script to customize the build. The result will be in the dist subdirectory.
To build the IDE in-place, invoke make ide in the root (there is no dependency tracking with this target, so to rebuild, either delete the ide folder beforehand, or add the -B option to make).
Both of these requires a running Docker daemon.

[Vonfry]

Suggestion: add following description into document for generic linux,

1. command not found may be caused by the interpreter of <omnetpp>/ide/omnetpp. This can be checked with readelf.
2. some dynamic libraries' path (such as webkitgtk) should be in LD_LIBRARY_PATH or rpath of the dynamic libraries which are unpacked from jar.