Alex Le’s Blog

Here’s a quick summary to install ImageMagick from source and to handle all the common graphics files:

1) Install necessary libraries for image processing. ImageMagick will rely on these libraries to handle the images.

sudo yum install libjpeg-devel libpng-devel glib2-devel fontconfig-devel zlib-devel libwmf-devel freetype-devel libtiff-devel jasper jasper-devel ghostscript-fonts

jasper and jasper-devel is needed for Jpeg2000. Also ghostscrip-fonts is needed for some components (such as captcha generator).

2) Download the lastest imagemagick from source and install (untar, run ./configure, sudo make, sudo make install) The output of the ./configure command will show all supported file types

3) To validate the supported files format, run

convert -list configure | grep DELEGATES

the result should be something like

> convert -list configure | grep DELEGATES
DELEGATES bzlib fontconfig freetype jpeg jng jp2 lcms png tiff x11 xml wmf zlib


References:

* http://b.lesseverything.com/2007/6/24/setting-up-imagemagick-rmagick-on-redhat-centos

* http://forums.fedoraforum.org/archive/index.php/t-32148.html

If you do “gem install capistrano”, the gem package manager will go fetch the latest gem version of capistrano, currently 2.3.0 and installed in the gem repository. In case you want to have multiple version s of capistrano running, here’s how to do it.

To install older gem version of Capistrano
gem install –version 1.4.2 capistrano
(1.4.2 is the latest one in the 1.x branch before the release of 2.0)

To run specifically the 1.4.2 version, use
cap _1.4.2_ *your_tasks_here*

Shortcut
To reduce the typing, you can make an alias in your .bash_profile on Linux to run the 1.4.2 version as cap1 (cap 2.x.x is still running as cap) using

# add this line to .bash_profile
alias cap1=”cap _1.4.2_”

Afterwards, reload the profile with

$ source .bash_profile

Since I am on Windows, what I did was creating a batch file called “cap1.bat” and saved it within my system’s PATH environment. For simplicity’s sake, I save the cap1.bat file inside my C:\Windows\System32 folder

@echo off
cap _1.4.2_ %*

The special wildcard %* will be replaced with your command-line arguments, saving you the typing.

To read more about the Capistrano 1.4.2 version, check out Jamis’s post here.