# Building Ruby extensions on OS X Tiger **URL:** \ **Category:** ruby-talk\ **Created:** [30 April 2005 00:35 UTC](https://rubytalk.org/t/building-ruby-extensions-on-os-x-tiger/18015 "2005-04-30T00:35:22Z")\ **Posts on this page:** 10\ **Page:** 1
**Author:** ![Rich\_Kilmer](https://avatars.discourse-cdn.com/v4/letter/r/85f322/32.png) [@Rich\_Kilmer](https://rubytalk.org/u/Rich_Kilmer)\ **Post date:** [30 April 2005 00:35 UTC](https://rubytalk.org/t/building-ruby-extensions-on-os-x-tiger/18015/1 "2005-04-30T00:35:22Z")
Tony Arnold posted this on the Rails wiki: > **···** > > \_\_\_\_\_ > > 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$(RUBY\_SO\_NAME)-static" > to: > CONFIG["LIBRUBYARG\_STATIC"] = "" > \_\_\_\_\_ > > NOTE: This is only important if you are building native extensions (not pure ruby ones)...but it does suck when you run into it...so its worth fixing. > > Wiki link: [http://wiki.rubyonrails.com/rails/show/HowtoInstallOnOSXTiger](http://wiki.rubyonrails.com/rails/show/HowtoInstallOnOSXTiger) > > Chad is working on a gem that you can install which fixes this too. > > -rich ---
**Author:** ![Chad\_Fowler4](https://avatars.discourse-cdn.com/v4/letter/c/9fc29f/32.png) [@Chad\_Fowler4](https://rubytalk.org/u/Chad_Fowler4)\ **Post date:** [30 April 2005 00:52 UTC](https://rubytalk.org/t/building-ruby-extensions-on-os-x-tiger/18015/2 "2005-04-30T00:52:26Z")
sudo gem install fixrbconfig sudo fixrbconfig > **···** > > On 4/29/05, Richard Kilmer \ wrote: > > > Tony Arnold posted this on the Rails wiki: > > \_\_\_\_\_ > > > > Mac OS X Tiger ships with Ruby 1.8.2 pre-installed. However, > > rbconfig.rb needs to be edited if you want to build any gems. (from > > Rich...not gems, native extensions) > > > > Edit rbconfig.rb > > > > sudo pico -w /usr/lib/ruby/1.8/powerpc-darwin8.0/rbconfig.rb > > Now remove -arch i386 from the CFLAGS and LDFLAGS variables. > > > > You will also need to change: > > CONFIG["LIBRUBYARG\_STATIC"] = "-l$(RUBY\_SO\_NAME)-static" > > to: > > CONFIG["LIBRUBYARG\_STATIC"] = "" > > \_\_\_\_\_ > > > > NOTE: This is only important if you are building native extensions > > (not pure ruby ones)...but it does suck when you run into it...so its > > worth fixing. > > > > Wiki link: [http://wiki.rubyonrails.com/rails/show/HowtoInstallOnOSXTiger](http://wiki.rubyonrails.com/rails/show/HowtoInstallOnOSXTiger) > > > > Chad is working on a gem that you can install which fixes this too. > > > > -rich > > -- > > Chad Fowler > [http://chadfowler.com](http://chadfowler.com) > > > **[Ruby Central](https://rubycentral.org)** > > > > Supporting the Ruby Community Since 2001 > > > **[WebMD - Better information. Better health.](https://www.rubygarden.org/)** > > > > The leading source for trustworthy and timely health and medical news and information. Providing credible health information, supportive community, and educational services by blending award-winning expertise in content, community services, expert... > > [http://rubygems.rubyforge.org](http://rubygems.rubyforge.org) (over 300,000 gems served!) ---
**Author:** ![Nobuyoshi\_Nakada](https://avatars.discourse-cdn.com/v4/letter/n/edb3f5/32.png) [@Nobuyoshi\_Nakada](https://rubytalk.org/u/Nobuyoshi_Nakada)\ **Post date:** [1 May 2005 00:30 UTC](https://rubytalk.org/t/building-ruby-extensions-on-os-x-tiger/18015/3 "2005-05-01T00:30:33Z")
Hi, At Sat, 30 Apr 2005 09:35:22 +0900, Richard Kilmer wrote in [ruby-talk:140540]: > 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$(RUBY\_SO\_NAME)-static" > to: > CONFIG["LIBRUBYARG\_STATIC"] = "" > \_\_\_\_\_ ARCH\_FLAG should be "-arch ppc" on darwin. As what is it defined, and RUBY\_SO\_NAME? > **···** > > -- > Nobu Nakada ---
**Author:** ![Ptkwt](https://avatars.discourse-cdn.com/v4/letter/p/f14d63/32.png) [@Ptkwt](https://rubytalk.org/u/Ptkwt)\ **Post date:** [30 April 2005 01:24 UTC](https://rubytalk.org/t/building-ruby-extensions-on-os-x-tiger/18015/4 "2005-04-30T01:24:27Z")
In article \, > **···** > > Chad Fowler \ wrote: > > > On 4/29/05, Richard Kilmer \ wrote: > > > > > Tony Arnold posted this on the Rails wiki: > > > \_\_\_\_\_ > > > > > > Mac OS X Tiger ships with Ruby 1.8.2 pre-installed. However, > > > rbconfig.rb needs to be edited if you want to build any gems. (from > > > Rich...not gems, native extensions) > > > > > > Edit rbconfig.rb > > > > > > sudo pico -w /usr/lib/ruby/1.8/powerpc-darwin8.0/rbconfig.rb > > > Now remove -arch i386 from the CFLAGS and LDFLAGS variables. > > > > > > You will also need to change: > > > CONFIG["LIBRUBYARG\_STATIC"] = "-l$(RUBY\_SO\_NAME)-static" > > > to: > > > CONFIG["LIBRUBYARG\_STATIC"] = "" > > > \_\_\_\_\_ > > > > > > NOTE: This is only important if you are building native extensions > > > (not pure ruby ones)...but it does suck when you run into it...so its > > > worth fixing. > > > > > > Wiki link: [http://wiki.rubyonrails.com/rails/show/HowtoInstallOnOSXTiger](http://wiki.rubyonrails.com/rails/show/HowtoInstallOnOSXTiger) > > > > > > Chad is working on a gem that you can install which fixes this too. > > > > > > -rich > > > > sudo gem install fixrbconfig > > sudo fixrbconfig > > You are indeed on the cutting edge 😉 > > Phil ---
**Author:** ![Jim\_Freeze2](https://avatars.discourse-cdn.com/v4/letter/j/e480ec/32.png) [@Jim\_Freeze2](https://rubytalk.org/u/Jim_Freeze2)\ **Post date:** [30 April 2005 15:56 UTC](https://rubytalk.org/t/building-ruby-extensions-on-os-x-tiger/18015/5 "2005-04-30T15:56:09Z")
\* Chad Fowler \ [2005-04-30 09:52:26 +0900]: [snipped patch instructions] > sudo gem install fixrbconfig > sudo fixrbconfig You know, it's this kind of tenderfoot gem file that takes the machismo out of hacking a few core ruby files. > **···** > > > On 4/29/05, Richard Kilmer \ wrote: > > -- > Jim Freeze > Code Red. Code Ruby ---
**Author:** ![Chad\_Fowler4](https://avatars.discourse-cdn.com/v4/letter/c/9fc29f/32.png) [@Chad\_Fowler4](https://rubytalk.org/u/Chad_Fowler4)\ **Post date:** [1 May 2005 02:09 UTC](https://rubytalk.org/t/building-ruby-extensions-on-os-x-tiger/18015/6 "2005-05-01T02:09:13Z")
CONFIG["ARCH\_FLAG"] = ""   CONFIG["RUBY\_SO\_NAME"] = "$(RUBY\_INSTALL\_NAME)" Should we update the rbconfig.rb again? KirinDave on irc also found another problem with the RC\_CFLAGS environment variable causing problems with, for example, RubyInline. I thought I might release another version of my fixer upper gem. > **···** > > On 4/30/05, nobu.nokada@softhome.net \ wrote: > > > Hi, > > > > At Sat, 30 Apr 2005 09:35:22 +0900, > > Richard Kilmer wrote in [ruby-talk:140540]: > > \> Mac OS X Tiger ships with Ruby 1.8.2 pre-installed. However, > > \> rbconfig.rb needs to be edited if you want to build any gems. (from > > \> Rich...not gems, native extensions) > > \> > > \> Edit rbconfig.rb > > \> > > \> sudo pico -w /usr/lib/ruby/1.8/powerpc-darwin8.0/rbconfig.rb > > \> Now remove -arch i386 from the CFLAGS and LDFLAGS variables. > > \> > > \> You will also need to change: > > \> CONFIG["LIBRUBYARG\_STATIC"] = "-l$(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? > > -- > > Chad Fowler > [http://chadfowler.com](http://chadfowler.com) > > > **[Ruby Central](https://rubycentral.org)** > > > > Supporting the Ruby Community Since 2001 > > > **[WebMD - Better information. Better health.](https://www.rubygarden.org/)** > > > > The leading source for trustworthy and timely health and medical news and information. Providing credible health information, supportive community, and educational services by blending award-winning expertise in content, community services, expert... > > [http://rubygems.rubyforge.org](http://rubygems.rubyforge.org) (over 300,000 gems served!) ---
**Author:** ![Nobuyoshi\_Nakada](https://avatars.discourse-cdn.com/v4/letter/n/edb3f5/32.png) [@Nobuyoshi\_Nakada](https://rubytalk.org/u/Nobuyoshi_Nakada)\ **Post date:** [1 May 2005 02:55 UTC](https://rubytalk.org/t/building-ruby-extensions-on-os-x-tiger/18015/7 "2005-05-01T02:55:05Z")
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$(RUBY\_SO\_NAME)-static" > \> \> to: > \> \> CONFIG["LIBRUBYARG\_STATIC"] = "" > \> \> \_\_\_\_\_ > \> > \> ARCH\_FLAG should be "-arch ppc" on darwin. As what is it > \> defined, and RUBY\_SO\_NAME? > \> > >   CONFIG["ARCH\_FLAG"] = "" From where has the flag come? >   CONFIG["RUBY\_SO\_NAME"] = "$(RUBY\_INSTALL\_NAME)" Do you have a problem at linking with the static library? > 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. > **···** > > -- > Nobu Nakada ---
**Author:** ![Chad\_Fowler4](https://avatars.discourse-cdn.com/v4/letter/c/9fc29f/32.png) [@Chad\_Fowler4](https://rubytalk.org/u/Chad_Fowler4)\ **Post date:** [1 May 2005 18:18 UTC](https://rubytalk.org/t/building-ruby-extensions-on-os-x-tiger/18015/8 "2005-05-01T18:18:10Z")
> 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. > **···** > > On 4/30/05, nobu.nokada@softhome.net \ wrote: > > -- > > Chad Fowler > [http://chadfowler.com](http://chadfowler.com) > > > **[Ruby Central](https://rubycentral.org)** > > > > Supporting the Ruby Community Since 2001 > > > **[WebMD - Better information. Better health.](https://www.rubygarden.org/)** > > > > The leading source for trustworthy and timely health and medical news and information. Providing credible health information, supportive community, and educational services by blending award-winning expertise in content, community services, expert... > > [http://rubygems.rubyforge.org](http://rubygems.rubyforge.org) (over 300,000 gems served!) ---
**Author:** ![Nobuyoshi\_Nakada](https://avatars.discourse-cdn.com/v4/letter/n/edb3f5/32.png) [@Nobuyoshi\_Nakada](https://rubytalk.org/u/Nobuyoshi_Nakada)\ **Post date:** [7 May 2005 16:38 UTC](https://rubytalk.org/t/building-ruby-extensions-on-os-x-tiger/18015/9 "2005-05-07T16:38:17Z")
Hi, At Mon, 2 May 2005 03:18:10 +0900, Chad Fowler wrote in [ruby-talk:140661]: > \> \> CONFIG["ARCH\_FLAG"] = "" > \> > \> From where has the flag come? > > rbconfig.rb > 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. Do you mean they are misconfiguration by Apple, but not a bug of configure.in? Sorry for noise. > **···** > > -- > Nobu Nakada ---
**Author:** ![Chad\_Fowler4](https://avatars.discourse-cdn.com/v4/letter/c/9fc29f/32.png) [@Chad\_Fowler4](https://rubytalk.org/u/Chad_Fowler4)\ **Post date:** [1 July 2005 20:04 UTC](https://rubytalk.org/t/building-ruby-extensions-on-os-x-tiger/18015/10 "2005-07-01T20:04:59Z")
Sorry for the VERY delayed response. It is a misconfiguration by Apple. > **···** > > On 5/7/05, nobu.nokada@softhome.net \ wrote: > > > Hi, > > > > At Mon, 2 May 2005 03:18:10 +0900, > > Chad Fowler wrote in [ruby-talk:140661]: > > \> \> \> CONFIG["ARCH\_FLAG"] = "" > > \> \> > > \> \> From where has the flag come? > > \> > > \> rbconfig.rb > > > > \> 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. > > > > Do you mean they are misconfiguration by Apple, but not a bug > > of configure.in? Sorry for noise. > > -- > Chad Fowler > [http://chadfowler.com](http://chadfowler.com) > > > **[Ruby Central](https://rubycentral.org)** > > > > Supporting the Ruby Community Since 2001 > > > **[WebMD - Better information. Better health.](https://www.rubygarden.org/)** > > > > The leading source for trustworthy and timely health and medical news and information. Providing credible health information, supportive community, and educational services by blending award-winning expertise in content, community services, expert... > > [http://rubygems.rubyforge.org](http://rubygems.rubyforge.org) (over 500,000 gems served!)