[Asterisk-Users] cannot make app_prepaid

[Freddy Setiawan]

hai there, today i tried to implement the prepaid application to my * box.
I do the step that mantion in to voip-info. i copy the app_prepaid.c and
Make file to my asteris/apps, then i run the make. but it show an error like
:

gcc -shared -Xlinker -x -o app_prepaid.so app_prepaid.o -lpq
/usr/bin/ld: cannot find -lpq
collect2: ld returned 1 exit status
make[1]: *** [app_prepaid.so] Error 1
make[1]: Leaving directory '/usr/src/asterisk/apps'
make: *** [subdirs] Error 1

Any sugestion what should i do?

Best Regards,

Freddy Setiawan