From: Rick DeNatale <rick.denatale@...>
Date: 2009-04-05T22:58:50+09:00
Subject: Re: How to get "irb1.8" using Ruby1.8 instead of Ruby1.9.1 ?

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On Sun, Apr 5, 2009 at 9:53 AM, Rick DeNatale <rick.denatale@gmail.com>wrot=
e:

> On Sun, Apr 5, 2009 at 8:29 AM, I=F1aki Baz Castillo <ibc@aliax.net> wrot=
e:
>
> > El Domingo 05 Abril 2009, Ken Bloom escribi=F3:
> > > Please tell me what the shebang in irb1.8 is, by running
> > >
> > > head /usr/bin/irb1.8
> > >
> > > (On my system, it says #!/usr/bin/ruby1.8, so this whole situation
> you're
> > > in should be impossible.)
> >
> > Thanks. As I've explained in this thread, I had Ruby1.8 installed as DE=
B
> > package (so irb was a link to irb1.8).
> > When compiling and installing Ruby1.9.1 from sources, it created
> > /usr/bin/ruby
> > and /usr/bin/irb.
> > But it's strange since /usr/bin/irb was a softlink and after Ruby 1.9.1
> > install it remains being a softlink to irb1.8, but irb1.8 is now a copy
> of
> > the
> > installed irb (Ruby 1.9.1).
>
>
> The Debian packaging system relies on users not installing stuff in the
> same
> places that the packager does. /usr/bin is one of those places.
>
> When you are installing source on a Debian based system (which would
> include
> Ubuntu) you need to put it somewhere else., like /usr/local/bin, so inste=
ad
> of just
> ./configure
> make
> sudo make install
>
> you need to do something like
>
> ./configure --prefix=3D/usr/local/ruby1.9
> make
> sudo make install
>
> I think you need to somehow force the system to reinstall the ruby 1.8
> package(s), then install 1.9 from source to a safe place.
>

An afterthought,  that configure command should probably be
./configure --prefix=3D/usr/local/ruby1.9 --program-suffix=3D1.9

the second option will turn the ruby, irb and other executables into
ruby1.9, irb1.9 etc rather than just
ruby, irb...

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Rick DeNatale

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