Make script distribution independant

Hi,

I would like to use the update script on Parabola GNU/Linux-libre. The dependency checks fail, as the needed programs are distributed with different names:

• build-essential I think this should be covered by base.
• libpci-dev Probably covered by libpciaccess

pacman -Ss libpci
extra/libpciaccess 0.16-2
    X11 PCI access library

• libudev-dev Probably covered by systemd-libudev
• zlib1g-dev Possibly covered by zlib

I see two ways:

1. Check if the packagemanager pacman is available & use different names for searching.
2. Check dependencies in a distribution independent way, e.g. over names of binaries. They should be the same, right?

If you need more information or see a way to let me help, please tell me.