4.8pre1 Build Issues

[Arthur Johnson]

I'm trying to install 4.8pre1 in /opt/xfce4.8pre1 so it doesn't
interfere with the "stable" install, however I'm having issues with
building the libraries.

The library libxfcegui4-4.7.0 failed.

export PKG_CONFIG_PATH=/opt/xfce4.8pre1
./configure --prefix=/opt/xfce4.8pre1

Error message:
checking for libxfce4util-1.0 >= 4.6.0... not found
*** The required package libxfce4util-1.0 was not found on your system.
*** Please install libxfce4util-1.0 (atleast version 4.6.0) or adjust
*** the PKG_CONFIG_PATH environment variable if you
*** installed the package in a nonstandard prefix so that
*** pkg-config is able to find it.

As you can see, I exported the path like I thought I should, but its
still failing.