Sie verwenden einen veralteten Browser und können nicht alle Funktionen dieser Webseite nutzen. Hier erfahren Sie, wie Sie Ihren Browser aktualisieren können.

Karriere | Investoren

Possible compilation problems with pylon4linux 2.3 under Ubuntu 11.xx or Fedora 13

It is very probable that you get the following error messages while trying to compile the pylon SDK samples under Ubuntu 11.xx, Fedora 13 or any other linux distributions based on the same platform revision:

/usr/bin/ld: AcquireSingleFrame.o: undefined reference to symbol

'GenICam::GenericException::what() const'

/usr/bin/ld: note: 'GenICam::GenericException::what() const' is defined

in DSO


so try adding it to the linker command line


could not read symbols: Invalid operation

It turns out that this problem is caused by changing the Linker behavior in newer Linux distributions, i.e. Ubuntu 11.04 or 11.10, Fedora 13 etc.

That is, up to the above mentioned revisions, the Linker used to search for dependent libraries (indirect linking of shared library symbols) automatically. In the case of pylon, it is the libGCBase_gcc40_v2_1.

However, from e.g. Ubuntu 11.04 on all shared libs must be explicitly added to the command-line compiler flags in order to be found during compilation.

Hence, in this given case, use the following command-line switch:


More information on that can be found under: