# Gem install blackbook on centos error **URL:** \ **Category:** Rails\ **Created:** [March 13, 2009, 10:07am UTC](https://www.ruby-forum.com/t/gem-install-blackbook-on-centos-error/162737 "2009-03-13T10:07:25Z")\ **Posts on this page:** 7\ **Page:** 1
**Author:** ![zeba-momin](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/z/8e7dd6/32.png) [@zeba-momin](https://www.ruby-forum.com/u/zeba-momin)\ **Post date:** [March 13, 2009, 10:07am UTC](https://www.ruby-forum.com/t/gem-install-blackbook-on-centos-error/162737/1 "2009-03-13T10:07:25Z")
Hello, I’m trying to install the blackbook gem on my m/c with centos , but i get the following error: Building native extensions. This could take a while… ERROR: Error installing blackbook: ERROR: Failed to build gem native extension. /opt/ruby-enterprise-1.8.6-20090201/bin/ruby extconf.rb install blackbook checking for #include \ … yes checking for #include \ … no libxslt is missing. try ‘port install libxslt’ or ‘yum install libxslt’ \*\*\* 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 –without-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=/opt/ruby-enterprise-1.8.6-20090201/bin/ruby –with-xml2-dir –without-xml2-dir –with-xml2-include –without-xml2-include=${xml2-dir}/include –with-xml2-lib –without-xml2-lib=${xml2-dir}/lib –with-xslt-dir –without-xslt-dir –with-xslt-include –without-xslt-include=${xslt-dir}/include –with-xslt-lib –without-xslt-lib=${xslt-dir}/lib Gem files will remain installed in /opt/ruby-enterprise-1.8.6-20090201/lib/ruby/gems/1.8/gems/nokogiri-1.2.1 for inspection. Results logged to /opt/ruby-enterprise-1.8.6-20090201/lib/ruby/gems/1.8/gems/nokogiri-1.2.1/ext/nokogiri/gem\_make.out Please can someone help me solve this… Thank you… ---
**Author:** ![zeba-momin](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/z/8e7dd6/32.png) [@zeba-momin](https://www.ruby-forum.com/u/zeba-momin)\ **Post date:** [March 13, 2009, 2:06pm UTC](https://www.ruby-forum.com/t/gem-install-blackbook-on-centos-error/162737/2 "2009-03-13T14:06:30Z")
On Fri, Mar 13, 2009 at 4:07 AM, Jeba M. \< removed\_email\_address@domain.invalid\> wrote: > checking for #include \ > … yes > checking for #include \ > … no > libxslt is missing. try ‘port install libxslt’ or ‘yum install libxslt’ > \*\*\* 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. So, did you try what the error suggested? Did you do ‘yum install libxslt’ ? Cheers– Charles ---
**Author:** ![zeba-momin](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/z/8e7dd6/32.png) [@zeba-momin](https://www.ruby-forum.com/u/zeba-momin)\ **Post date:** [March 13, 2009, 2:11pm UTC](https://www.ruby-forum.com/t/gem-install-blackbook-on-centos-error/162737/3 "2009-03-13T14:11:43Z")
Charles J. wrote: > So, did you try what the error suggested? Did you do ‘yum install > libxslt’ > ? > Charles Thanks for replying… I dont have YUM installed on my m/c so I did… up2date install libxslt It worked fine and installed successfully. But while doing gem install blackbook I get exactly the same error again…!!! ☹ Where am I going wrong??? Thank you. ---
**Author:** ![zeba-momin](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/z/8e7dd6/32.png) [@zeba-momin](https://www.ruby-forum.com/u/zeba-momin)\ **Post date:** [March 13, 2009, 2:24pm UTC](https://www.ruby-forum.com/t/gem-install-blackbook-on-centos-error/162737/4 "2009-03-13T14:24:41Z")
On Fri, Mar 13, 2009 at 8:11 AM, Jeba M. \< removed\_email\_address@domain.invalid\> wrote: > Exactly the same error message? (Sorry about asking that.) Cheers– Charles ---
**Author:** ![zeba-momin](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/z/8e7dd6/32.png) [@zeba-momin](https://www.ruby-forum.com/u/zeba-momin)\ **Post date:** [March 13, 2009, 2:37pm UTC](https://www.ruby-forum.com/t/gem-install-blackbook-on-centos-error/162737/5 "2009-03-13T14:37:45Z")
Charles J. wrote: > On Fri, Mar 13, 2009 at 8:11 AM, Jeba M. \< > removed\_email\_address@domain.invalid\> wrote: > > > > > Exactly the same error message? (Sorry about asking that.) > > Cheers– > > Charles Yes…exactly the same error message… And I don’t have the privileges to install YUM on the m/c. So can’t even do that… ---
**Author:** ![zeba-momin](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/z/8e7dd6/32.png) [@zeba-momin](https://www.ruby-forum.com/u/zeba-momin)\ **Post date:** [March 13, 2009, 4:31pm UTC](https://www.ruby-forum.com/t/gem-install-blackbook-on-centos-error/162737/6 "2009-03-13T16:31:51Z")
On Mar 13, 1:37 pm, Jeba M. [removed\_email\_address@domain.invalid](mailto:removed_email_address@domain.invalid) wrote: > Yes…exactly the same error message… > And I don’t have the privileges to install YUM on the m/c. > So can’t even do that… I know nothing about centos, but did you just install the libraries or did you also install the associated development headers (they are frequently split out into separate packages eg libfoo and libfoo-dev or libfoo-devel) Fred ---
**Author:** ![zeba-momin](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/z/8e7dd6/32.png) [@zeba-momin](https://www.ruby-forum.com/u/zeba-momin)\ **Post date:** [January 1, 2010, 7:00pm UTC](https://www.ruby-forum.com/t/gem-install-blackbook-on-centos-error/162737/7 "2010-01-01T19:00:35Z")
Jeba M. wrote: > Charles J. wrote: > > > On Fri, Mar 13, 2009 at 8:11 AM, Jeba M. \< > > removed\_email\_address@domain.invalid\> wrote: > > > > > > > > > Exactly the same error message? (Sorry about asking that.) > > > > Cheers– > > > > Charles > > Yes…exactly the same error message… > And I don’t have the privileges to install YUM on the m/c. > So can’t even do that… Hi, Were was your problem solved? I faced the same issue recently with ubuntu and it got fixed when i installed libxlst-devel. I used synaptic Package manager to get the same since yum and apt-get both used to say that the package was not found. Just wanted to know what you did. Thanks and Regards, Anjali