From: Adam Stegman <adam.stegman@...>
Date: 2011-10-18T10:35:43+09:00
Subject: Re: 'gem install' help please

On Oct 17, 2011, at 6:08 AM, Kaye Ng wrote:

> Hello Luis.
> 
> I downloaded DevKit-3.4.5-20100819-1535-sfx.exe and followed the 
> instructions on 
> https://github.com/oneclick/rubyinstaller/wiki/Development-Kit
> 
> Under Installation Instructions number 5, when I typed
> 'gem install rdiscount --platform=ruby' , I got the following:
> -------------------------------------------------------------------------
> Temporarily enhancing PATH to include DevKit...
> Building native extensions.  This could take a while...
> ERROR:  Error installing rdiscount:
>        ERROR: Failed to build gem native extension.
> 
> C:/Ruby192/bin/ruby.exe extconf.rb
> checking for random()... *** 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=C:/Ruby192/bin/ruby
>        --with-rdiscount-dir
>        --without-rdiscount-dir
>        --with-rdiscount-include
>        --without-rdiscount-include=${rdiscount-dir}/include
>        --with-rdiscount-lib
>        --without-rdiscount-lib=${rdiscount-dir}/lib
> C:/Ruby192/lib/ruby/1.9.1/mkmf.rb:368:in `try_do': The complier failed 
> to generate an executable file. (RuntimeError)
> You have to install development tools first.
>        from C:/Ruby192/lib/ruby/1.9.1/mkmf.rb:435:in `try_link0'
>        from C:/Ruby192/lib/ruby/1.9.1/mkmf.rb:440:in `try_link'
>        from C:/Ruby192/lib/ruby/1.9.1/mkmf.rb:552:in `try_func'
>        from C:/Ruby192/lib/ruby/1.9.1/mkmf.rb:797:in `block in 
> have_func'
>        from C:/Ruby192/lib/ruby/1.9.1/mkmf.rb:693:in `block in 
> checking_for'
>        from C:/Ruby192/lib/ruby/1.9.1/mkmf.rb:280:in `block (2 levels) 
> in postpone'
>        from C:/Ruby192/lib/ruby/1.9.1/mkmf.rb:254:in `open'
>        from C:/Ruby192/lib/ruby/1.9.1/mkmf.rb:280:in `block in 
> postpone'
>        from C:/Ruby192/lib/ruby/1.9.1/mkmf.rb:254:in `open'
>        from C:/Ruby192/lib/ruby/1.9.1/mkmf.rb:276:in `postpone'
>        from C:/Ruby192/lib/ruby/1.9.1/mkmf.rb:692:in `checking_for'
>        from C:/Ruby192/lib/ruby/1.9.1/mkmf.rb:796:in `have_func'
>        from extconf.rb:5:in `<main>'
> 
> 
> Gem files will remain installed in 
> C:/Ruby192/lib/ruby/gems/1.9.1/gems/rdiscount-1.6.8 for inspection.
> Results logged to 
> C:/Ruby192/lib/ruby/gems/1.9.1/gems/rdiscount-1.6.8/ext/gem_make.out

What is in the log files? Check the directory named at the bottom of this output.

Adam Stegman