Ruby1.9.1 kullanarak Ubuntu Natty Narwhal 11.04 üzerine raylar kurmaya çalışıyordum.
apt-get install ruby1.9.1-full
Dev paketini içeren ruby'yi kullanarak kurdum . Hatayı googledim ve hepsi zaten sahip olduğum 1.9.1-dev'i yüklememi önerdi.
Building native extensions. This could take a while...
ERROR: Error installing rails:
ERROR: Failed to build gem native extension.
/usr/bin/ruby1.8 extconf.rb
extconf.rb:36:in `require': no such file to load -- mkmf (LoadError)
from extconf.rb:36
Gem files will remain installed in /usr/lib/ruby/gems/1.8/gems/bcrypt-ruby-3.0.1 for inspection.
Results logged to /usr/lib/ruby/gems/1.8/gems/bcrypt-ruby-3.0.1/ext/mri/gem_make.out