# Installing libxml on osx as Gem **URL:** \ **Category:** ruby-talk\ **Created:** [28 September 2006 03:35 UTC](https://rubytalk.org/t/installing-libxml-on-osx-as-gem/31416 "2006-09-28T03:35:07Z")\ **Posts on this page:** 3\ **Page:** 1
**Author:** ![nicholas.henry](https://avatars.discourse-cdn.com/v4/letter/n/e8c25b/32.png) [@nicholas.henry](https://rubytalk.org/u/nicholas.henry)\ **Post date:** [28 September 2006 03:35 UTC](https://rubytalk.org/t/installing-libxml-on-osx-as-gem/31416/1 "2006-09-28T03:35:07Z")
I'm trying to install libxml on osx as a gem (Ruby 1.8.2). Any ideas on how to resolve these issues? (please see output below) Thank you, Nicholas Attempting local installation of 'libxml' Local gem file not found: libxml\*.gem Attempting remote installation of 'libxml' Building native extensions. This could take a while... extconf.rb:64: undefined method `find\_header' for main:Object (NoMethodError) ERROR: While executing gem ... (RuntimeError)     ERROR: Failed to build gem native extension. Gem files will remain installed in /usr/local/lib/ruby/gems/1.8/gems/libxml-ruby-0.3.8 for inspection.   ruby extconf.rb install libxml\nchecking for socket() in -lsocket... no checking for gethostbyname() in -lnsl... no checking for atan() in -lm... no checking for atan() in -lm... yes checking for inflate() in -lz... yes checking for iconv\_open() in -liconv... yes checking for xmlParseDoc() in -lxml2... yes checking for libxml/xmlversion.h... no ---
**Author:** ![Ross\_Bamford4](https://avatars.discourse-cdn.com/v4/letter/r/ea666f/32.png) [@Ross\_Bamford4](https://rubytalk.org/u/Ross_Bamford4)\ **Post date:** [28 September 2006 11:40 UTC](https://rubytalk.org/t/installing-libxml-on-osx-as-gem/31416/2 "2006-09-28T11:40:25Z")
Hmm, find\_header should be defined by mkmf, so I don't understand what's going on there. Maybe it's something to do with OSX - has anyone else seen this? Anyway, could you post up your ruby version? Also, the results of running this: $ ruby -rmkmf -e 'find\_header("libxml/xmlversion.h", "/usr/include/libxml2")' Thanks, > **···** > > On Thu, 2006-09-28 at 12:35 +0900, nicholas.henry wrote: > > > I'm trying to install libxml on osx as a gem (Ruby 1.8.2). Any ideas on > > how to resolve these issues? (please see output below) > > > > Thank you, > > Nicholas > > > > Attempting local installation of 'libxml' > > Local gem file not found: libxml\*.gem > > Attempting remote installation of 'libxml' > > Building native extensions. This could take a while... > > extconf.rb:64: undefined method `find\_header' for main:Object > > (NoMethodError) > > ERROR: While executing gem ... (RuntimeError) > >     ERROR: Failed to build gem native extension. > > Gem files will remain installed in > > /usr/local/lib/ruby/gems/1.8/gems/libxml-ruby-0.3.8 for inspection. > >   ruby extconf.rb install libxml\nchecking for socket() in -lsocket... > > no > > checking for gethostbyname() in -lnsl... no > > checking for atan() in -lm... no > > checking for atan() in -lm... yes > > checking for inflate() in -lz... yes > > checking for iconv\_open() in -liconv... yes > > checking for xmlParseDoc() in -lxml2... yes > > checking for libxml/xmlversion.h... no > > -- > Ross Bamford - rosco@roscopeco.REMOVE.co.uk ---
**Author:** ![nicholas.henry](https://avatars.discourse-cdn.com/v4/letter/n/e8c25b/32.png) [@nicholas.henry](https://rubytalk.org/u/nicholas.henry)\ **Post date:** [12 October 2006 02:20 UTC](https://rubytalk.org/t/installing-libxml-on-osx-as-gem/31416/3 "2006-10-12T02:20:11Z")
Upgrading to 1.8.4 resolved this. Ross Bamford wrote: > **···** > > > On Thu, 2006-09-28 at 12:35 +0900, nicholas.henry wrote: > > \> I'm trying to install libxml on osx as a gem (Ruby 1.8.2). Any ideas on > > \> how to resolve these issues? (please see output below) > > \> > > \> Thank you, > > \> Nicholas > > \> > > \> Attempting local installation of 'libxml' > > \> Local gem file not found: libxml\*.gem > > \> Attempting remote installation of 'libxml' > > \> Building native extensions. This could take a while... > > \> extconf.rb:64: undefined method `find\_header' for main:Object > > \> (NoMethodError) > > \> ERROR: While executing gem ... (RuntimeError) > > \> ERROR: Failed to build gem native extension. > > \> Gem files will remain installed in > > \> /usr/local/lib/ruby/gems/1.8/gems/libxml-ruby-0.3.8 for inspection. > > \> ruby extconf.rb install libxml\nchecking for socket() in -lsocket... > > \> no > > \> checking for gethostbyname() in -lnsl... no > > \> checking for atan() in -lm... no > > \> checking for atan() in -lm... yes > > \> checking for inflate() in -lz... yes > > \> checking for iconv\_open() in -liconv... yes > > \> checking for xmlParseDoc() in -lxml2... yes > > \> checking for libxml/xmlversion.h... no > > \> > > > > Hmm, find\_header should be defined by mkmf, so I don't understand what's > > going on there. Maybe it's something to do with OSX - has anyone else > > seen this? > > > > Anyway, could you post up your ruby version? Also, the results of > > running this: > > > > $ ruby -rmkmf -e 'find\_header("libxml/xmlversion.h", "/usr/include/libxml2")' > > > > Thanks, > > -- > > Ross Bamford - rosco@roscopeco.REMOVE.co.uk