I was able to run a hello world program on my linksys wrt54g router running white Russian 0.9.

I am using sdk for white russian 0.9 for cross compiling my c code then creating package of my application(for eg helloworld) then installing that package on to router by ssh terminal.

So now if I am creating a package using the below mentioned header files in my c code, then after installation when i run the application like this on router:

root@openwrt#helloworld
ERROR: /bin/helloworld: line 1: syntax error: “)” unexpected

it gives an error.

i need to add following headers to my code
<pcap.h>
<sys/socket.h>
<string.h>
<stdlib.h>
<netinet/in.h>

so please tell me which packages i guess i must install first to make my code run
as i notice we have uclibc for <stdio.h>.
or incase something else i need to do to make it run.

Thank you

Your binary was not cross compiled properly. Make sure your source directory is clean and does not contain precompiled objects.