Hi!
System: FreeBSD 4.9-STABLE i386
Using the following script
sh configure                          \
  --prefix=${PREFIX}                  \
  --site-includes=/usr/local/include  \
  --site-libraries=/usr/local/lib     \
  --with-scrollbars=athena            \
  --with-menubars=athena              \
  --with-toolbars=yes                 \
  --with-dialogs=athena               \
  --with-athena=3d                    \
  --with-xim=xlib                     \
  --with-mule                         \
  --pdump
I can successfully configure and build the 21.4 series (using Xaw3d),
but I get "Error: Could not find a suitable Athena library to build
with."  if I try to configure a 21.5 version.
If I let the configure script decide what's to be used, I end with
Window System:
  Compiling in support for the X window system:
    - X Windows headers location:                 /usr/X11R6/include
    - X Windows libraries location:               /usr/X11R6/lib
    - Handling WM_COMMAND properly.
  Using Lucid menubars.
  Using Lucid scrollbars.
  Using Motif dialog boxes.
  Using Motif native widgets.
norbert.