From: Brian Scott <mr.novell@...>
Date: 2009-12-09T06:44:03+09:00
Subject: Re: rubygems - invalid gem format

I seem to have fixed my problem. My original error is below. I fixed it 
by installing ruby1.8-dev gem as described at 
http://mentalized.net/journal/2006/01/24/no_such_file_to_load_mkmf/.

ERROR:  Error installing heroku:
  ERROR: Failed to build gem native extension.

/usr/bin/ruby1.8 extconf.rb
extconf.rb:1:in `require': no such file to load -- mkmf (LoadError)
  from extconf.rb:1

Luis Lavena wrote:
> On Dec 7, 7:32�pm, Brian Scott <mr.nov...@gmail.com> wrote:
>> This happens no matter what gem I try to install.
> I believe I've responded to your report before, but again:
> 
> Please clear your gem cache, on any of the OS you're using.
> 
> In any of these OS, on any RubyGems error report, please provide the
> complete information of "gem env" and the detailed trace of the
> execution of the command with debug and verbose options.
> 
> gem install heroku --debug -V

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