rvm install 1.8.7-head errors on centos 5.5

I installed rvm successfully as a root on CentOS 5.5. Then I tried to to install ruby-1.8.7-head

rvm install 1.8.7-head

And receive such error

Installing Ruby from source to: /usr/local/rvm/rubies/ruby-1.8.7-head, this may take a while depending on your cpu(开发者_开发技巧s)...

ruby-1.8.7-head - #fetching Cloning from [github url], this may take a while depending on your connection... Initialized empty Git repository in /usr/local/rvm/repos/ruby-1.8.7-head/.git/ error: SSL certificate problem, verify that the CA cert is OK. Details: error:14090086:SSL routines:SSL3_GET_SERVER_CERTIFICATE:certificate verify failed while accessing [github url]

fatal: HTTP request failed cloning from [github.com/ruby.git] failed, now attempting to clone from https://github.com/ruby/ruby.git, this may take a while depending on your connection... Initialized empty Git repository in /usr/local/rvm/repos/ruby-1.8.7-head/.git/ error: SSL certificate problem, verify that the CA cert is OK. Details: error:14090086:SSL routines:SSL3_GET_SERVER_CERTIFICATE:certificate verify failed while accessing [github.com/ruby/ruby.git/info/refs]

fatal: HTTP request failed ERROR: There has been an error while trying to fetch the repository.

Halting the installation. ERROR: There has been an error fetching the ruby interpreter. Halting the installation.

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TO FIX THIS ISSUE

(Optional) backup certificates

cp /etc/pki/tls/certs/ca-bundle.crt /root/backup/

Get new cert

curl http://curl.haxx.se/ca/cacert.pem -o /etc/pki/tls/certs/ca-bundle.crt

After that I got stuck with next error

rvm install 1.8.7-head

Here it is

Installing Ruby from source to: /usr/local/rvm/rubies/ruby-1.8.7-head, this may take a while depending on your cpu(s)...

ruby-1.8.7-head - #fetching HEAD is now at 61ac67c merge revision(s) 31731:31734: From https://github.com/ruby/ruby * branch ruby_1_8_7 -> FETCH_HEAD Already up-to-date. Copying from repo to src path... Running autoreconf ERROR: Error running 'autoreconf', please read /usr/local/rvm/log/ruby-1.8.7-head/autoreconf.log ERROR: Skipping configure step, 'configure' does not exist, did autoreconf not run successfully? ruby-1.8.7-head - #compiling ERROR: Error running 'make ', please read /usr/local/rvm/log/ruby-1.8.7-head/make.log ERROR: There has been an error while running make. Halting the installation.

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On Ubuntu 11.04 apt-get install automake fixed it for me.

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Check out "rvm notes" and make sure you install all the dependencies listed for your system. It sounds to me like you are missing libssl-dev, however you may be missing more than that.