I've done a clean install of 9.0.3, then installed the wireless tools. Wired network access works right out of the box. Right away before any specific configuration iwconfig can't find the libraries it needs in /usr/local/lib. I can fix this by adding LD_LIBRARY_PATH=$LD_LIBRARY_PATH:"/usr/local/lib" to /etc/profile. Now iwconfig works OK, although no wlan0 yet. Next when I try to use wpa_supplicant or wpa_passphrase they can't find the libraries in /usr/local/lib either, even though LD_LIBRARY_PATH is set (correctly?). If I put simlinks in /lib pointing to the necessary libraries everything works and I have wireless access :-).
So it seems that there must be some mechanism to let executables find and use the libraries in /usr/local/lib that is broken. Has anyone else had this difficulty? My hardware is a new 3b with nothing attached other than a HDMI display and a USB wireless keyboard and mouse (Logitech).