Code:
find / -iname "pygtk-2.0.pc"
and then add that directory to your PKG_CONFIG_PATH by doing:
Code:
export PKG_CONFIG_PATH=/result/from/find/command/above
You can either add that line to your .bashrc file and reload bash (open a new window or just type bash) or your /etc/profile file so it affects all users. Or just run ./configure straight after using the export command.