topic Problem with linking C-hack in Operating System - OpenVMS

Problem with linking C-hack

Heinz W Genhart — Fri, 26 Jun 2009 08:46:47 GMT

Hi community

I try to do a fast hack which shows me all the TCPIP Interfaces, their addresses (IP and HW) and their network masks.

Now I have a samll c-programm. I can compile it, but I cant link it.

The linker finds two undefined Symbols.
But as far as I can see, those two symbols are defined in sys$share:tcpip$libpcap_shr.exe and I use this shareable image for linking.

Can somebody give me a hint?
Please see attached files and output

Thanks in advance

Geni

Re: Problem with linking C-hack

Martin Vorlaender — Fri, 26 Jun 2009 09:12:28 GMT

Geni,

if I ANALYZE/IMAGE SYS$SHARE:TCPIP$LIBPCAP_SHR.EXE, I see "pcap_findalldevs" and "pcap_freealldevs", i.e. lower-case. You have to tell the C compiler to compile your modules /NAMES=AS_IS to pass them lower-cased to the linker.

HTH,
Martin

Re: Problem with linking C-hack

Heinz W Genhart — Fri, 26 Jun 2009 09:18:34 GMT

Hi Martin

that's it...

Thanks a lot

Geni