First, try to execute the ggv that you successfully installed using the CLI and figure why it's not working. You will likely get some error messages. Another option is to install bug-buddy. Whatever is causing that to fail may cause other versions to fail as well.
Second, make sure your PKG_CONFIG_PATH variable isn't set to something odd. Execute echo $PKG_CONFIG_PATH and see what that gives you (probably nothing, but that's OK). If it set to something, execute unset PKG_CONFIG_PATH and try again.
Third, metadata files are stored in <libdir>/pkgconfig where <libdir> could be any number of library directories (e.g. /usr/lib, /usr/local/lib, /usr/X11R7/lib, etc.). Look there for the libgnomeui-2.0.pc file. If you're sure that libgnomeui is installed correctly, then just create a metadata file for it. Adjust the information for your system accordingly:
Code:
prefix=/opt/gnome-2.18.0
exec_prefix=${prefix}
libdir=/opt/gnome-2.18.0/lib64
includedir=${prefix}/include
libgnomeui_serverdir=/opt/gnome-2.18.0/lib64/libgnomeui
Name: libgnomeui
Description: libgnomeui
Requires: libgnome-2.0 libgnomecanvas-2.0 gtk+-2.0 gdk-pixbuf-2.0 libart-2.0 gconf-2.0 libbonoboui-2.0 gnome-vfs-2.0 gnome-keyring-1
Version: 2.18.1
Libs: -L${libdir} -lgnomeui-2 -L/usr/lib64 -lSM -lICE
Cflags: -I${includedir}/libgnomeui-2.0