>>> Unpacking source...
>>> Unpacking ruby-gnome2-all-0.19.1.tar.gz to /var/tmp/portage/dev-ruby/ruby-pango-0.19.1/work
>>> Source unpacked in /var/tmp/portage/dev-ruby/ruby-pango-0.19.1/work
>>> Compiling source in /var/tmp/portage/dev-ruby/ruby-pango-0.19.1/work/ruby-gnome2-all-0.19.1/pango ...
patching mkmf
Variable 'libdir' not defined in '/usr/lib64/pkgconfig/ripperX.pc'
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... yes
checking for pango... yes
checking for G_PLATFORM_WIN32... no
checking for pango_layout_iter_get_type() in pango/pango.h... yes
checking for pango_layout_set_ellipsize() in pango/pango.h... yes
checking for pango_layout_get_font_description() in pango/pango.h... yes
checking for pango_render_part_get_type() in pango/pango.h... yes
checking for pango_attr_strikethrough_color_new() in pango/pango.h... yes
checking for pango_attr_underline_color_new() in pango/pango.h... yes
checking for pango_glyph_item_free() in pango/pango.h... yes
checking for pango_glyph_item_get_type() in pango/pango.h... yes
checking for pango_attr_iterator_get_attrs() in pango/pango.h... yes
checking for pango_itemize_with_base_dir() in pango/pango.h... yes
checking for pango_font_family_is_monospace() in pango/pango.h... yes
checking for pangocairo... yes
checking for cairo... yes
checking for rb_cairo.h... yes
creating rbpangoversion.h
patching mkmf
creating Makefile
/var/tmp/portage/dev-ruby/ruby-pango-0.19.1/work/ruby-gnome2-all-0.19.1/glib/src/lib/pkg-config.rb:85:in `name': undefined method `[]' for nil:NilClass (NoMethodError)
	from /var/tmp/portage/dev-ruby/ruby-pango-0.19.1/work/ruby-gnome2-all-0.19.1/glib/src/lib/mkmf-gnome2.rb:165:in `create_pkg_config_file'
	from extconf.rb:46
 * ERROR: dev-ruby/ruby-pango-0.19.1 failed:
 *   extconf.rb failed
 * 
 * Call stack:
 *     ebuild.sh, line   49:  Called src_compile
 *   environment, line 2545:  Called ruby-gnome2_src_compile
 *   environment, line 2382:  Called die
 * The specific snippet of code:
 *       ${RUBY} extconf.rb || die "extconf.rb failed";
 * 
 * If you need support, post the topmost build error, and the call stack if relevant.
 * A complete build log is located at '/var/tmp/portage/dev-ruby/ruby-pango-0.19.1/temp/build.log'.
 * The ebuild environment file is located at '/var/tmp/portage/dev-ruby/ruby-pango-0.19.1/temp/environment'.
 * S: '/var/tmp/portage/dev-ruby/ruby-pango-0.19.1/work/ruby-gnome2-all-0.19.1/pango'