Running into a problem compilation an application on linux.

I was trying to compile an application on porteus linux gcc -Wall -O xyz.c -lpci -o xyz /usr/lib/gcc/i486-slackware-linux/4.8.2/../../../../i486-slackware-linux/bin/ld: cannot find -lpci collect2: error ld returned 1 exit status Can you please help me resolve this. Thanks, OMK