From: Chad Fowler <chadfowler@...>
Date: 2005-05-02T03:18:10+09:00
Subject: Re: Building Ruby extensions on OS X Tiger

On 4/30/05, nobu.nokada@softhome.net <nobu.nokada@softhome.net> wrote:
> Hi,
> 
> At Sun, 1 May 2005 11:09:13 +0900,
> Chad Fowler wrote in [ruby-talk:140626]:
> > > > Mac OS X Tiger ships with Ruby 1.8.2 pre-installed. However,
> > > > rbconfig.rb needs to be edited if you want to build any gems. (from
> > > > Rich...not gems, native extensions)
> > > >
> > > > Edit rbconfig.rb
> > > >
> > > > sudo pico -w /usr/lib/ruby/1.8/powerpc-darwin8.0/rbconfig.rb
> > > > Now remove -arch i386 from the CFLAGS and LDFLAGS variables.
> > > >
> > > > You will also need to change:
> > > > CONFIG["LIBRUBYARG_STATIC"] = "-l$(RUBY_SO_NAME)-static"
> > > > to:
> > > > CONFIG["LIBRUBYARG_STATIC"] = ""
> > > > _____
> > >
> > > ARCH_FLAG should be "-arch ppc" on darwin.  As what is it
> > > defined, and RUBY_SO_NAME?
> > >
> >
> >   CONFIG["ARCH_FLAG"] = ""
> 
> From where has the flag come?
> 

rbconfig.rb

> >   CONFIG["RUBY_SO_NAME"] = "$(RUBY_INSTALL_NAME)"
> 
> Do you have a problem at linking with the static library?
> 

Haven't tried it.

> > Should we update the rbconfig.rb again?  KirinDave on irc also found
> > another problem with the RC_CFLAGS environment variable causing
> > problems with, for example, RubyInline.
> 
> For what is RC_CFLAGS used, and where is it set?  I think ruby
> never use it.

$ grep RC_CFLAG /usr/lib/ruby/1.8/powerpc-darwin8.0/rbconfig.rb
  
 CONFIG["LDSHARED"] = "cc $(RC_CFLAGS) -dynamic -bundle -undefined
suppress -flat_namespace"
  CONFIG["LIBRUBY_LDSHARED"] = "cc $(RC_CFLAGS) -dynamic -bundle
-undefined suppress -flat_namespace"

This is looking like a plain error.  Maybe a typo?  RC_CFLAGS appears
to be used in darwin to allow for customized CFLAG settings.  Does
this make sense to anyone?  Seems like it should be changed.

-- 

Chad Fowler
http://chadfowler.com
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