rvm で ree をインストールしようとすると、次のエラーが表示されます。
Error running 'env CFLAGS=-I/usr/local/opt/libyaml/include -I/usr/local/opt/readline/include -I/usr/local/opt/libxml2/include -I/usr/local/opt/libxslt/include -I/usr/local/opt/libksba/include -I/usr/local/opt/openssl/include -I/usr/local/opt/sqlite/include LDFLAGS=-L/usr/local/opt/libyaml/lib -L/usr/local/opt/readline/lib -L/usr/local/opt/libxml2/lib -L/usr/local/opt/libxslt/lib -L/usr/local/opt/libksba/lib -L/usr/local/opt/openssl/lib -L/usr/local/opt/sqlite/lib...
please read /Users/me/.rvm/log/ree-1.8.7-2012.02/install.log
There has been an error while trying to run the ree installer. Halting the installation.
install.log には次のように書かれています。
cc1: error: /opt/local/include: Permission denied
ありません/opt/local/include
。他の ruby をインストールできますが、ree はインストールできません。