We found that the workstation installation of RedHat Fedora Core 4 came without the X11 (X11R6) header files that normally come with a unix OS and that are required for building interviews (without these files running ./configure quits after an error message
...
checking for X... no
configure: error: cannot find X11
$
...
To add the X11 headers to your FC 4 system sign in as root and type
yum install XFree86-devel