#4 Doesn't build on Debian

[Nigel Horne]

Doesn't build on Debian. Configure says:

configure: error: Ruby is required.

But I already have ruby installed:

$ ruby --version
ruby 2.0.0p457 (2014-03-03) [x86_64-linux-gnu]

[Kenji Okimoto]

Did you install ruby2.0-dev package?

$ LANG=C dpkg -l ruby2.0-dev
Desired=Unknown/Install/Remove/Purge/Hold
| Status=Not/Inst/Conf-files/Unpacked/halF-conf/Half-inst/trig-aWait/Trig-pend
|/ Err?=(none)/Reinst-required (Status,Err: uppercase=bad)
||/ Name                                           Version                      Architecture                 Description
+++-==============================================-============================-============================-==================================================================================================
ii  ruby2.0-dev:amd64                              2.0.0.484+really457-2        amd64                        Header files for compiling extension modules for the Ruby 2.0