Error Message at Install

After I type “rvm all do gem install visualruby” in terminal, I get the
following error message:
ERROR: Error installing visualruby:
ERROR: Failed to build gem native extension.

    /Users/agajews/.rvm/rubies/ruby-1.9.3-p374/bin/ruby extconf.rb

checking for -Wall option to compiler… yes
checking for -Waggregate-return option to compiler… yes
checking for -Wcast-align option to compiler… yes
checking for -Wextra option to compiler… yes
checking for -Wformat=2 option to compiler… yes
checking for -Winit-self option to compiler… yes
checking for -Wlarger-than-65500 option to compiler… yes
checking for -Wmissing-declarations option to compiler… yes
checking for -Wmissing-format-attribute option to compiler… yes
checking for -Wmissing-include-dirs option to compiler… yes
checking for -Wmissing-noreturn option to compiler… yes
checking for -Wmissing-prototypes option to compiler… yes
checking for -Wnested-externs option to compiler… yes
checking for -Wold-style-definition option to compiler… yes
checking for -Wpacked option to compiler… yes
checking for -Wp,-D_FORTIFY_SOURCE=2 option to compiler… yes
checking for -Wpointer-arith option to compiler… yes
checking for -Wswitch-default option to compiler… yes
checking for -Wswitch-enum option to compiler… yes
checking for -Wundef option to compiler… yes
checking for -Wunsafe-loop-optimizations option to compiler… yes
checking for -Wwrite-strings option to compiler… 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 cairo… yes
checking for rb_cairo.h… yes
checking for Win32 OS… no
checking for gtksourceview-2.0… yes
*** extconf.rb failed ***
Could not create Makefile due to some reason, probably lack of
necessary libraries and/or headers. Check the mkmf.log file for more
details. You may need configuration options.

Provided configuration options:
–with-opt-dir
–with-opt-include
–without-opt-include=${opt-dir}/include
–with-opt-lib
–without-opt-lib=${opt-dir}/lib
–with-make-prog
–without-make-prog
–srcdir=.
–curdir
–ruby=/Users/agajews/.rvm/rubies/ruby-1.9.3-p374/bin/ruby
–with-pkg-config
–without-pkg-config
–with-override-variables
–without-override-variables
/Users/agajews/.rvm/gems/ruby-1.9.3-p374/gems/pkg-config-1.1.4/lib/pkg-config.rb:239:in
parse_pc': .pc for libxml-2.0 doesn't exist. (RuntimeError) from /Users/agajews/.rvm/gems/ruby-1.9.3-p374/gems/pkg-config-1.1.4/lib/pkg-config.rb:181:indeclaration’
from
/Users/agajews/.rvm/gems/ruby-1.9.3-p374/gems/pkg-config-1.1.4/lib/pkg-config.rb:130:in
requires_private' from /Users/agajews/.rvm/gems/ruby-1.9.3-p374/gems/pkg-config-1.1.4/lib/pkg-config.rb:311:inall_required_packages’
from
/Users/agajews/.rvm/gems/ruby-1.9.3-p374/gems/pkg-config-1.1.4/lib/pkg-config.rb:195:in
collect_cflags' from /Users/agajews/.rvm/gems/ruby-1.9.3-p374/gems/pkg-config-1.1.4/lib/pkg-config.rb:134:incflags’
from
/Users/agajews/.rvm/gems/ruby-1.9.3-p374/gems/pkg-config-1.1.4/lib/pkg-config.rb:196:in
block in collect_cflags' from /Users/agajews/.rvm/gems/ruby-1.9.3-p374/gems/pkg-config-1.1.4/lib/pkg-config.rb:195:incollect’
from
/Users/agajews/.rvm/gems/ruby-1.9.3-p374/gems/pkg-config-1.1.4/lib/pkg-config.rb:195:in
collect_cflags' from /Users/agajews/.rvm/gems/ruby-1.9.3-p374/gems/pkg-config-1.1.4/lib/pkg-config.rb:134:incflags’
from
/Users/agajews/.rvm/gems/ruby-1.9.3-p374/gems/pkg-config-1.1.4/lib/pkg-config.rb:364:in
cflags' from /Users/agajews/.rvm/gems/ruby-1.9.3-p374/gems/pkg-config-1.1.4/lib/pkg-config.rb:415:inhave_package’
from
/Users/agajews/.rvm/gems/ruby-1.9.3-p374/gems/glib2-1.2.0/lib/mkmf-gnome2.rb:540:in
required_pkg_config_package' from extconf.rb:58:in

Gem files will remain installed in
/Users/agajews/.rvm/gems/ruby-1.9.3-p374/gems/gtksourceview2-1.2.0 for
inspection.
Results logged to
/Users/agajews/.rvm/gems/ruby-1.9.3-p374/gems/gtksourceview2-1.2.0/ext/gtksourceview2/gem_make.out

Please help!

Hi,

In [email protected]
“[ruby-gnome2-devel-en] Error Message at Install” on Mon, 28 Jan 2013
00:36:51 +0100,
Alex G. [email protected] wrote:

After I type “rvm all do gem install visualruby” in terminal, I get the
following error message:
ERROR: Error installing visualruby:
ERROR: Failed to build gem native extension.

/Users/agajews/.rvm/gems/ruby-1.9.3-p374/gems/pkg-config-1.1.4/lib/pkg-config.rb:239:in

`parse_pc’: .pc for libxml-2.0 doesn’t exist. (RuntimeError)

Could you confirm that libxml2-dev package is installed?

Thanks,

kou