From: Kaye Ng <sbstn26@...>
Date: 2011-10-17T20:08:30+09:00
Subject: Re: 'gem install' help please

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
--------------------------------------------------------------------------

I tried the suggestions at 
https://github.com/oneclick/rubyinstaller/wiki/Troubleshooting#wiki-gems_fails_comspec_autorun

under 'ERROR: Failed to build gem native extension' , I tried the 
scenarios A and B.

In scenario A, it's ComSpec=C:\Windows\system32\cmd.exe , so nothing 
wrong with it.

In scenario B,
HKEY_CURRENT_USER\Software\Microsoft\Command Processor
    CompletionChar    REG_DWORD    0x9
    DefaultColor    REG_DWORD    0x0
    EnableExtensions    REG_DWORD    0x1
    PathCompletionChar    REG_DWORD    0x9
...there's no AutoRun in it, so nothing wrong too.

I'm stuck.

I'm using windows 7 Ultimate, 32-bit

Thank you for your time.

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