Setting up Fast Ruby (1.9.3)

gistfile1.txt

# update rvm
rvm get latest

# create a 1.9.3 patch
export patchdir=$rvm_path/patches/ruby/1.9.3/p0
mkdir -p $rvm_path/patches/ruby/1.9.3/p0
curl https://raw.github.com/gist/1658360/2eee5541435663deddd674617bf26ae645b015bd/cumulative_performance.patch > $rvm_path/patches/ruby/1.9.3/p0/falcon.patch

# install patched version
rvm install 1.9.3 -n falcon --patch $patchdir/falcon.patch --with-gcc=clang
rvm use 1.9.3-fast

Rerunning without clang gives me

[jc@mac ~]# rvm install 1.9.3 -n falcon --patch $patchdir/falcon.patch
Fetching yaml-0.1.4.tar.gz to /Users/jc/.rvm/archives
Extracting yaml-0.1.4.tar.gz to /Users/jc/.rvm/src
Configuring yaml in /Users/jc/.rvm/src/yaml-0.1.4.
Compiling yaml in /Users/jc/.rvm/src/yaml-0.1.4.
Installing yaml to /Users/jc/.rvm/usr
Installing Ruby from source to: /Users/jc/.rvm/rubies/ruby-1.9.3-p0-falcon, this may take a while depending on your cpu(s)...

ruby-1.9.3-p0-falcon - #fetching 
ruby-1.9.3-p0-falcon - #extracted to /Users/jc/.rvm/src/ruby-1.9.3-p0-falcon (already extracted)
Applying patch '/Users/jc/.rvm/patches/ruby/1.9.3/p0/falcon.patch' (located at //Users/jc/.rvm/patches/ruby/1.9.3/p0/falcon.patch)
Error running 'patch -F 25 -p1 -N -f <"//Users/jc/.rvm/patches/ruby/1.9.3/p0/falcon.patch"', please read /Users/jc/.rvm/log/ruby-1.9.3-p0-falcon/patch.apply.falcon.patch.log
ruby-1.9.3-p0-falcon - #autoreconf

Fuck it... this is a waste of time...

You could try to run "rvm cleanup sources", and then running the install command again.