rvm package install readline

Fetching readline-5.2.tar.gz to /Users/Richard/.rvm/archives
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100 1989k  100 1989k    0     0   218k      0  0:00:09  0:00:09 --:--:--  288k
Extracting readline-5.2.tar.gz to /Users/Richard/.rvm/src
Configuring readline in /Users/Richard/.rvm/src/readline-5.2.
Compiling readline in /Users/Richard/.rvm/src/readline-5.2.
Installing readline to /Users/Richard/.rvm/usr

Fetching readline-6.0.tar.gz to /Users/Richard/.rvm/archives
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100 2217k  100 2217k    0     0   209k      0  0:00:10  0:00:10 --:--:--  290k
Extracting readline-6.0.tar.gz to /Users/Richard/.rvm/src
Configuring readline in /Users/Richard/.rvm/src/readline-6.0.
Compiling readline in /Users/Richard/.rvm/src/readline-6.0.
Installing readline to /Users/Richard/.rvm/usr

rvm install ree -C --with-readline-dir=$HOME/.rvm/usr

/Users/Richard/.rvm/rubies/ree-1.8.7-2010.02
ree-1.8.7-2010.02 - #fetching (ruby-enterprise-1.8.7-2010.02)
ree-1.8.7-2010.02 - #extracting ruby-enterprise-1.8.7-2010.02 to /Users/Richard/.rvm/src/ree-1.8.7-2010.02
ree-1.8.7-2010.02 - #installing
Error running './installer -a /Users/Richard/.rvm/rubies/ree-1.8.7-2010.02  --dont-install-useful-gems ', please check /Users/Richard/.rvm/log/ree-1.8.7-2010.02/install*.log
There has been an error while trying to run the ree installer. Halting the installation.

====== Error Log ======
ossl_x509revoked.c:64: warning: passing argument 2 of ‘ASN1_dup’ from incompatible pointer type
readline.c: In function ‘username_completion_proc_call’:
readline.c:734: error: ‘username_completion_function’ undeclared (first use in this function)
readline.c:734: error: (Each undeclared identifier is reported only once
readline.c:734: error: for each function it appears in.)
make[1]: *** [readline.o] Error 1
make: *** [all] Error 1