gcc 4.0.0 Ada build

[Robert Love]

I grabbed the 4.0.0 tarball and unpacked it on my Fedora Core 3 Intel  
machine.  I want to build Ada, C, C++ and Fortran.  I have a prior  
version of Gnat installed.

When configuring I used

    --enable-threads=gnat

but when the build errors off I'm told "gnat is an unknown thread  
package".


Questions:

1) Is the argument "gnat" or "libgnat"?

2) Does this thread library come with the tarball?  If not where do I  
get it?

3) What other options work with Ada?

Any other tips for building Ada as part of gcc 4.0.0