svn-1.6.0-rc2 configure incorrectly claims ruby is too old

more 1.6.0-rc2 configuration excitement on a fully-updated fedora 9:

...
checking for ruby... /usr/bin/ruby
can't find header files for ruby.
configure: WARNING: The detected Ruby is too old for Subversion to use
configure: WARNING: A Ruby which has rb_hash_foreach is required to use the
configure: WARNING: Subversion Ruby bindings
configure: WARNING: Upgrade to the official 1.8.2 release, or later
...

  first, the installed ruby is not too old:

$ ruby --version
ruby 1.8.6 (2008-08-11 patchlevel 287) [i386-linux]
$

  also, installing the "ruby-devel" package not only solved the header
files diagnostic, but also solved the "too old" diagnostic, which is a
bit weird, no? the fact that the headers are missing shouldn't cause
an erroneous "too old" message, should it?

rday

--
========================================================================
Robert P. J. Day
Linux Consulting, Training and Annoying Kernel Pedantry:
    Have classroom, will lecture.
http://crashcourse.ca                          Waterloo, Ontario, CANADA
========================================================================
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