Configure error

[atombender]

# brew install hyperdex --with-ruby-bindings
==> Installing hyperdex
==> Downloading http://hyperdex.org/src/hyperdex-1.4.4.tar.gz
######################################################################## 100.0%
==> Patching
patching file cityhash/city.cc
Hunk #1 succeeded at 501 (offset 2 lines).
==> ./configure --prefix=/usr/local/Cellar/hyperdex/1.4.4 --enable-ruby-bindings
"--prefix" as its prefix.

It is probably safe to use:
./configure RUBY_EXT_SITEARCH=/Library/Ruby/Site/2.0.0/universal-darwin14
-------------------------------------------------

READ THIS: http://git.io/brew-troubleshooting
If reporting this issue please do so at (not Homebrew/homebrew):
  https://github.com/hyperdex/homebrew-hyperdex/issues

Works if I set RUBY_EXT_SITEARCH. However, I use rbenv, and so installation requires that I pick a specific Ruby version here. Is there no gem?

[atombender]

It's been a year, and no response. @rescrv?