# Installing json-1.1.1 gem on windows xp **URL:** \ **Category:** Ruby\ **Created:** [July 30, 2007, 9:36am UTC](https://www.ruby-forum.com/t/installing-json-1-1-1-gem-on-windows-xp/110724 "2007-07-30T09:36:46Z")\ **Posts on this page:** 6\ **Page:** 1
**Author:** ![sumi](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/s/7ba0ec/32.png) [@sumi](https://www.ruby-forum.com/u/sumi)\ **Post date:** [July 30, 2007, 9:36am UTC](https://www.ruby-forum.com/t/installing-json-1-1-1-gem-on-windows-xp/110724/1 "2007-07-30T09:36:46Z")
Hi all, I was trying to install the json extension gem… but says ‘Error failed to create local extension/nmake …’ When I went through the conf file it showed it requires both mkmf (meant for extensions) and rbconfig… Now the question where do I get these files and how do I install them on my win-xp os… Thanks in advance… Sumanth. ---
**Author:** ![sumi](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/s/7ba0ec/32.png) [@sumi](https://www.ruby-forum.com/u/sumi)\ **Post date:** [July 30, 2007, 11:40am UTC](https://www.ruby-forum.com/t/installing-json-1-1-1-gem-on-windows-xp/110724/2 "2007-07-30T11:40:17Z")
Sumanth A. wrote: > ``` > I was trying to install the json extension gem... but says 'Error > > ``` > > failed to create local extension/nmake …’ > When I went through the conf file it showed it requires both mkmf (meant > for extensions) and rbconfig… > Now the question where do I get these files and how do I install them on > my win-xp os… > Thanks in advance… This sounds as if you try to compile the gem on your Windows box. This is a PITA on this operating system (it comes with no vendor compiler toolchain by default) and/or with Ruby (only the One Click Installer?) It might not be possible at all. It’s perhaps better, if you use the Windows binary (mswin32 platform) gem I provide on rubyforge in this case. You can also try to install the Visual C++ development environment and Microsoft’s Platform SDK and use the provided Rakefile to create this gem yourself, if you still have problems. But this is not for the faint of heart: the installation of these two archives takes forever, you have to configure all the correct environment variables, and you also have to edit Ruby’s config.h if you want to use a current version of Visual C++. If all things are configured correctly and in place, it works quite well, though. The whole process still feels rather hackish to me – it pisses me off every time I have to walk through it. ---
**Author:** ![sumi](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/s/7ba0ec/32.png) [@sumi](https://www.ruby-forum.com/u/sumi)\ **Post date:** [July 31, 2007, 1:29pm UTC](https://www.ruby-forum.com/t/installing-json-1-1-1-gem-on-windows-xp/110724/3 "2007-07-31T13:29:26Z")
On 30 juil. 07, at 11:39, Florian F. wrote: > This sounds as if you try to compile the gem on your Windows box. Maybe not. I had the exact same problem a while back when trying to install (not compile, install) the json gem (yes, the win32 “variant” which should contain a precompiled binary) on a Windows XP system, and it just kept failing with the same error message. Since I’m always trying to keep my usage of Windows to the bare minimum to keep a good mental health, I just switched to json-pure to be done with it 🙂 But I’d love to hear more about this. ---
**Author:** ![sumi](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/s/7ba0ec/32.png) [@sumi](https://www.ruby-forum.com/u/sumi)\ **Post date:** [August 1, 2007, 7:17am UTC](https://www.ruby-forum.com/t/installing-json-1-1-1-gem-on-windows-xp/110724/4 "2007-08-01T07:17:50Z")
Well thanks for your suggestions guys. The problem got solved when I installed the json-1.1.1-mswin32 gem and now I am able to suer the parse method of json. Sumanth ---
**Author:** ![sumi](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/s/7ba0ec/32.png) [@sumi](https://www.ruby-forum.com/u/sumi)\ **Post date:** [August 9, 2007, 9:16am UTC](https://www.ruby-forum.com/t/installing-json-1-1-1-gem-on-windows-xp/110724/5 "2007-08-09T09:16:29Z")
Sumanth A. wrote: > Hi all, > I was trying to install the json extension gem… but says ‘Error > failed to create local extension/nmake …’ > When I went through the conf file it showed it requires both mkmf (meant > for extensions) and rbconfig… > Now the question where do I get these files and how do I install them on > my win-xp os… > Thanks in advance… > > Sumanth. hi all… I am very new developer in ruby on rails… I faced the same prob… same configuration as u … but still problem is not solved so what can i do? can u tell me plzzzzz… Mehedi if u help me then i send u a thanks…otherwise sorry… ---
**Author:** ![sumi](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/s/7ba0ec/32.png) [@sumi](https://www.ruby-forum.com/u/sumi)\ **Post date:** [August 1, 2007, 4:49pm UTC](https://www.ruby-forum.com/t/installing-json-1-1-1-gem-on-windows-xp/110724/6 "2007-08-01T16:49:49Z")
I just saw that the JSON comes as the module with ruby… ([http://caboo.se/doc/classes/ActiveSupport/JSON.html](http://caboo.se/doc/classes/ActiveSupport/JSON.html)). How do I include this module and make use of the functions like encode and decode? I do not think that JSON gem is required since we already have the module… Any help in this regard, welcome. Thanks in advance! Sumanth.