gistfile1.txt

$ rvm reinstall ruby-2.0.0 --with-gcc=gcc-4.7
Removing /Users/hongli/.rvm/src/ruby-2.0.0-p0...
Removing /Users/hongli/.rvm/rubies/ruby-2.0.0-p0...
Fetching openssl-1.0.1c.tar.gz to /Users/hongli/.rvm/archives
Extracting openssl to /Users/hongli/.rvm/src/openssl-1.0.1c
Configuring openssl in /Users/hongli/.rvm/src/openssl-1.0.1c.
Error running './Configure darwin64-x86_64-cc -I/Users/hongli/.rvm/usr/include -L/Users/hongli/.rvm/usr/lib zlib no-asm no-krb5 --prefix=/Users/hongli/.rvm/usr --with-gcc=gcc-4.7 no-shared', please read /Users/hongli/.rvm/log/ruby-2.0.0-p0/openssl/configure.log
Compiling openssl in /Users/hongli/.rvm/src/openssl-1.0.1c.
Error running 'make', please read /Users/hongli/.rvm/log/ruby-2.0.0-p0/openssl/make.log
Updating openssl certificates
Installing Ruby from source to: /Users/hongli/.rvm/rubies/ruby-2.0.0-p0, this may take a while depending on your cpu(s)...
ruby-2.0.0-p0 - #downloading ruby-2.0.0-p0, this may take a while depending on your connection...
ruby-2.0.0-p0 - #extracting ruby-2.0.0-p0 to /Users/hongli/.rvm/src/ruby-2.0.0-p0
ruby-2.0.0-p0 - #extracted to /Users/hongli/.rvm/src/ruby-2.0.0-p0
ruby-2.0.0-p0 - #configuring
ruby-2.0.0-p0 - #compiling
ruby-2.0.0-p0 - #installing
Retrieving rubygems-2.0.3
There is no checksum for 'http://production.cf.rubygems.org/rubygems/rubygems-2.0.3.tgz' or 'rubygems-2.0.3.tgz', it's not possible to validate it.
If you wish to continue with unverified download add '--verify-downloads 1' after the command.

There has been an error while trying to fetch the source.
Halting the installation.