# Install error - gtk2 on ubuntu natty (11.04) **URL:** \ **Category:** Ruby-Gnome 2\ **Created:** [April 8, 2011, 11:01am UTC](https://www.ruby-forum.com/t/install-error-gtk2-on-ubuntu-natty-11-04/205535 "2011-04-08T11:01:20Z")\ **Posts on this page:** 9\ **Page:** 1
**Author:** ![luislavena](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/l/0ea827/32.png) [@luislavena](https://www.ruby-forum.com/u/luislavena)\ **Post date:** [April 8, 2011, 11:01am UTC](https://www.ruby-forum.com/t/install-error-gtk2-on-ubuntu-natty-11-04/205535/1 "2011-04-08T11:01:20Z")
Hi everyone, I’ve tried to install gtk2 on ubuntu natty 11.04 but i receive an error during the installation: (after sudo gem1.9.1 install gtk2) checking for GCC… yes checking for rb\_define\_alloc\_func() in ruby.h… yes checking for rb\_block\_proc() in ruby.h… yes checking for new allocation framework… yes checking for attribute assignment… no checking for Win32 OS… no checking for gobject-2.0… no \*\*\* extconf.rb failed \*\*\* gobject-2.0 seems to be missing though i’ve installed libgtk2.0-dev (which is supposed to install all the dependencies needed for building the native extensions). Has anybody tried to install the gtk2 gem on ubuntu 11.04? Andrea ---
**Author:** ![ribbed21](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/r/f9ae1b/32.png) [@ribbed21](https://www.ruby-forum.com/u/ribbed21)\ **Post date:** [April 8, 2011, 2:08pm UTC](https://www.ruby-forum.com/t/install-error-gtk2-on-ubuntu-natty-11-04/205535/2 "2011-04-08T14:08:30Z")
hi andrea - well, i wish i had some answers for you - i’ve had problems installing the latest gtk2 on ubuntu 10.04 as well (there are several posts on this board about my troubles…) for the moment i use the version that came with my package installer (0.19.3) and that works fine, though i’m missing some features from the newer version… does your package installer have a “libgtk2-ruby” package? -j ---
**Author:** ![ribbed21](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/r/f9ae1b/32.png) [@ribbed21](https://www.ruby-forum.com/u/ribbed21)\ **Post date:** [April 8, 2011, 7:39pm UTC](https://www.ruby-forum.com/t/install-error-gtk2-on-ubuntu-natty-11-04/205535/3 "2011-04-08T19:39:39Z")
2011/4/8 Andrea D. [removed\_email\_address@domain.invalid](mailto:removed_email_address@domain.invalid): > gobject-2.0 seems to be missing though i’ve installed libgtk2.0-dev (which is > supposed to install all the dependencies needed for building the native > extensions). Has anybody tried to install the gtk2 gem on ubuntu 11.04? Not yet. Does /usr/lib/pkgconfig/gobject-2.0.pc is present on your computer ? – Vincent C. ---
**Author:** ![ribbed21](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/r/f9ae1b/32.png) [@ribbed21](https://www.ruby-forum.com/u/ribbed21)\ **Post date:** [April 27, 2011, 6:34am UTC](https://www.ruby-forum.com/t/install-error-gtk2-on-ubuntu-natty-11-04/205535/4 "2011-04-27T06:34:08Z")
Looks like there is no way to use ruby gtk2 on ubuntu 11.04. I have tried all methods and have exhausted. ---
**Author:** ![ribbed21](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/r/f9ae1b/32.png) [@ribbed21](https://www.ruby-forum.com/u/ribbed21)\ **Post date:** [April 27, 2011, 8:48am UTC](https://www.ruby-forum.com/t/install-error-gtk2-on-ubuntu-natty-11-04/205535/5 "2011-04-27T08:48:40Z")
On 27 April 2011 13:34, Karthikeyan A k [removed\_email\_address@domain.invalid](mailto:removed_email_address@domain.invalid) wrote: > Looks like there is no way to use ruby gtk2 on ubuntu 11.04. I have > tried all methods and have exhausted. That’s good to know since I was just about to upgrade. Any ideas on what the problem is? ``` MikeC ``` ---
**Author:** ![ribbed21](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/r/f9ae1b/32.png) [@ribbed21](https://www.ruby-forum.com/u/ribbed21)\ **Post date:** [April 27, 2011, 4:53pm UTC](https://www.ruby-forum.com/t/install-error-gtk2-on-ubuntu-natty-11-04/205535/6 "2011-04-27T16:53:21Z")
2011/4/8 Andrea D. [removed\_email\_address@domain.invalid](mailto:removed_email_address@domain.invalid): > checking for new allocation framework… yes I just tested to run “ruby extconf.rb” in glib2 directory on ubuntu 11.04. I have the same error. I Install libglib2.0-dev package to resolve it. I can now build ruby-glib2 without errors. libglib2.0-dev installs /usr/lib/pkgconfig/gobject-2.0.pc file that why I ask to check for it in a previous mail. – Vincent C. ---
**Author:** ![ribbed21](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/r/f9ae1b/32.png) [@ribbed21](https://www.ruby-forum.com/u/ribbed21)\ **Post date:** [May 3, 2011, 1:28am UTC](https://www.ruby-forum.com/t/install-error-gtk2-on-ubuntu-natty-11-04/205535/7 "2011-05-03T01:28:16Z")
Hi, In [removed\_email\_address@domain.invalid](mailto:removed_email_address@domain.invalid) “Re: [ruby-gnome2-devel-en] Install error - gtk2 on ubuntu natty (11.04)” on Mon, 02 May 2011 21:16:49 +0200, “Andrea B.C.” [removed\_email\_address@domain.invalid](mailto:removed_email_address@domain.invalid) wrote: > Installing libglib2.0-dev didn’t work on my 11.04 Ubuntu machine. It > turns out that on Natty some .pc files (including gobject-2.0.pc) are > placed in /usr/lib/i386-linux-gnu/pkgconfig instead of > /usr/lib/pkgconfig; thus I solved the problem by following these steps: I’ve added /usr/lib/i386-linux-gnu/pkgconfig to the default .pc search path in pkg-config.gem and released it. (pkg-config gem 1.1.1 is the latest version.) Please try again. ## Thanks, kou ---
**Author:** ![ribbed21](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/r/f9ae1b/32.png) [@ribbed21](https://www.ruby-forum.com/u/ribbed21)\ **Post date:** [May 4, 2011, 6:33pm UTC](https://www.ruby-forum.com/t/install-error-gtk2-on-ubuntu-natty-11-04/205535/8 "2011-05-04T18:33:17Z")
Hi Kou, Kouhei S. wrote in post #996305: > Hi, > > In [removed\_email\_address@domain.invalid](mailto:removed_email_address@domain.invalid) > “Re: [ruby-gnome2-devel-en] Install error - gtk2 on ubuntu natty > (11.04)” on Mon, 02 May 2011 21:16:49 +0200, > “Andrea B.C.” [removed\_email\_address@domain.invalid](mailto:removed_email_address@domain.invalid) wrote: > > > Installing libglib2.0-dev didn’t work on my 11.04 Ubuntu machine. It > > turns out that on Natty some .pc files (including gobject-2.0.pc) are > > placed in /usr/lib/i386-linux-gnu/pkgconfig instead of > > /usr/lib/pkgconfig; thus I solved the problem by following these steps: > > I’ve added /usr/lib/i386-linux-gnu/pkgconfig to the default > .pc search path in pkg-config.gem and released > it. (pkg-config gem 1.1.1 is the latest version.) > > Please try again. Works like a charm now. > ## Thanks, > > kou Thank you very much, -abc ---
**Author:** ![ribbed21](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/r/f9ae1b/32.png) [@ribbed21](https://www.ruby-forum.com/u/ribbed21)\ **Post date:** [May 2, 2011, 9:16pm UTC](https://www.ruby-forum.com/t/install-error-gtk2-on-ubuntu-natty-11-04/205535/9 "2011-05-02T21:16:49Z")
Vincent C. wrote in post #995328: > 2011/4/8 Andrea D. [removed\_email\_address@domain.invalid](mailto:removed_email_address@domain.invalid): > > > checking for new allocation framework… yes > > I just tested to run “ruby extconf.rb” in glib2 directory on ubuntu > 11.04. > I have the same error. I Install libglib2.0-dev package to resolve it. > I can now build ruby-glib2 without errors. > > libglib2.0-dev installs /usr/lib/pkgconfig/gobject-2.0.pc file that > why I ask to check for it in a previous mail. Installing libglib2.0-dev didn’t work on my 11.04 Ubuntu machine. It turns out that on Natty some .pc files (including gobject-2.0.pc) are placed in /usr/lib/i386-linux-gnu/pkgconfig instead of /usr/lib/pkgconfig; thus I solved the problem by following these steps: $ sudo apt-get install {libpango1.0,libglib2.0,libatk1.0,libcairo2, libgdk-pixbuf2.0,libgtk2.0}-dev $ cd /usr/lib/pkgconfig/ $ sudo ln -s ../i386-linux-gnu/pkgconfig/{atk,fontconfig, freetype2,gio-2.0,gio-unix-2.0,glib-2.0,gmodule-no-export-2.0, gobject-2.0,gthread-2.0,libpng,pangocairo,pangoft2,pango, x11,xau,xcb,xcb-render,xcb-shm,xcomposite,xcursor,xdamage,xdmcp, xext,xfixes,xinerama,xi,xrandr,xrender}.pc . $ sudo gem install gtk2 Hope it helps. -abc