From: Luis Lavena Date: 2007-12-29T17:20:14+09:00 Subject: Re: gem install mongrel error?? help On Dec 29, 3:57 am, Li Yu <79962...@qq.com> wrote: > gem install mongrel > Updating metadata for 39 gems fromhttp://gems.rubyforge.org > ...................................... > complete > Building native extensions. This could take a while... > ERROR: Error installing mongrel: > ERROR: Failed to build gem native extension. > > /usr/local/bin/ruby extconf.rb install mongrel > checking for main() in -lc... yes > creating Makefile > > make > gcc -I. -I/usr/local/include/ruby-1.9.0/i686-linux > -I/usr/local/include/ruby-1.9.0 -I. -D_FILE_OFFSET_BITS=64 -fPIC -g -O2 Stop right there. There is no Mongrel compatible with Ruby 1.9.0. Currently there is no release plan about it, but we are working on this subject. Official word: unsupported. I guess you will try to install rails after mongrel, so I suggest to get back to 1.8.6 and stick there. 1.9.0 is a development release.