iperf3 --version result question

[WatcherOfTheSkies]

Hi,

I've downloaded 3.12 and 3.18 from here...
https://software.es.net/iperf/index.html

After compiling both versions for Linux and verifying their version I've noticed the following...

~/IPERF/3.12/iperf-3.12$ ./src/iperf3 --version

iperf 3.12 (cJSON 1.7.15)
Linux peter-OptiPlex-7070 5.15.0-130-generic #140-Ubuntu SMP Wed Dec 18 17:59:53 UTC 2024 x86_64
Optional features available: CPU affinity setting, IPv6 flow label, SCTP, TCP congestion algorithm setting, sendfile / zerocopy, socket pacing, authentication, bind to device, support IPv4 don't fragment


~/IPERF/3.12/iperf-3.12$ ./src/.libs/iperf3 --version

iperf 3.17.1 (cJSON 1.7.15)
Linux peter-OptiPlex-7070 5.15.0-130-generic #140-Ubuntu SMP Wed Dec 18 17:59:53 UTC 2024 x86_64
Optional features available: CPU affinity setting, IPv6 flow label, SCTP, TCP congestion algorithm setting, sendfile / zerocopy, socket pacing, authentication, bind to device, support IPv4 don't fragment, POSIX threads

~/IPERF/3.18/iperf-3.18$ ./src/iperf3 --version

iperf 3.18 (cJSON 1.7.15)
Linux peter-OptiPlex-7070 5.15.0-130-generic #140-Ubuntu SMP Wed Dec 18 17:59:53 UTC 2024 x86_64
Optional features available: CPU affinity setting, IPv6 flow label, SCTP, TCP congestion algorithm setting, sendfile / zerocopy, socket pacing, authentication, bind to device, support IPv4 don't fragment, POSIX threads

~/IPERF/3.18/iperf-3.18$ ./src/.libs/iperf3 --version

iperf 3.17.1 (cJSON 1.7.15)
Linux peter-OptiPlex-7070 5.15.0-130-generic #140-Ubuntu SMP Wed Dec 18 17:59:53 UTC 2024 x86_64
Optional features available: CPU affinity setting, IPv6 flow label, SCTP, TCP congestion algorithm setting, sendfile / zerocopy, socket pacing, authentication, bind to device, support IPv4 don't fragment, POSIX threads

Is this as expected?

Thanks!

[WatcherOfTheSkies]

I now think this is to do with where the library files are. I've just compiled it on another PC with no iperf3 history and got the following...

~/IPERF/iperf-3.12$ ./src/.libs/iperf3 --version ./src/.libs/iperf3: error while loading shared libraries: libiperf.so.0: cannot open shared object file: No such file or directory

[WatcherOfTheSkies]

It seems to be a library issue. Probably brought on by using several versions.

[davidBar-On]

I think that you need to do "make install" (probably using "sudo") to change the library version.

[davidBar-On]

I think that you need to do "make install" (probably using "sudo") to change the library version.

[WatcherOfTheSkies]

Thanks, I've previously experimented with static linking so that I can jump between versions. I've managed to get into bit of a mess!