From: 404 why Date: 2010-04-11T03:38:52+09:00 Subject: [ruby-core:29419] [Bug #3121] "make rdoc" fails Issue #3121 has been updated by 404 why. I got the same error message when I was using the RVM to install Ruby from trunk source. Hope it will be working ASAP! :) ~$ rvm install 1.9.2-head Installing Ruby from source to: ~/.rvm/rubies/ruby-1.9.2-head Running autoconf Configuring ruby-1.9.2-head, this may take a while depending on your cpu(s)... Compiling ruby-1.9.2-head, this may take a while, depending on your cpu(s)... Installing ruby-1.9.2-head Error running 'make install', please check ~/.rvm/log/ruby-1.9.2-head/install*.log There has been an error while running make install. Aborting the installation. ~$ cat ~/.rvm/log/ruby-1.9.2-head/install.error.log [2010-04-11 01:48:50] make install uh-oh! RDoc had a problem: Directory .ext/rdoc already exists, but it looks like it isn't an RDoc directory. Because RDoc doesn't want to risk destroying any of your existing files, you'll need to specify a different output directory name (using the --op option). run with --debug for full backtrace make: *** [rdoc] error 1 So I changed my mind to use ruby-1.9.2-preview1, just run the following command��� ~$ rvm install 1.9.2 --head It workes! ---------------------------------------- http://redmine.ruby-lang.org/issues/show/3121 ---------------------------------------- http://redmine.ruby-lang.org