Disturbing gcc 3.2 message

[Post, Mark K]

I'm trying to build gcc 3.2.  The very first thing that comes out is the
following message:

*** This configuration is not supported in the following subdirectories:
     target-libffi target-boehm-gc target-zlib target-libjava
    (Any other directories should still work fine.)

The configure I'm running is:
CFLAGS="-Wall -O2" LDFLAGS=-s \
../gcc-$VERSION/configure --prefix=/usr \
                          --enable-shared \
                          --with-gnu-ld \
                          --enable-threads \
                          --verbose \
                          --target=s390-slackware-linux \
                          --host=s390-slackware-linux



What is this message really telling me?  What would I have to do to
eliminate it?  Can I eliminate it?  Am I going to have a problem?

Mark Post