rmagick installation for MacOSX

Try the below following steps to install rmagick using macports.

sudo port install tiff -macosx imagemagick

If you get an error like this..

Error: Checksum (md5) mismatch for lcms-1.19.tar.gz
Error: Checksum (sha1) mismatch for lcms-1.19.tar.gz
Error: Checksum (rmd160) mismatch for lcms-1.19.tar.gz

then execute the below commands

sudo port selfupdate

sudo port clean --all lcms

sudo port install tiff -macosx imagemagick

now try this below command to really work for Rails

sudo gem install rmagick

hope it helps you ?