What prerequisites does ImageMagick/GraphicsMagick have?
Support for GIF is built in to ImageMagick and GraphicsMagick, but they rely on delegate libraries to support most of the other image file formats. To build the example images for the RMagick HTML documentation, you’ll need to install the libraries for these image formats: • FreeType • Ghostscript fonts • JPEG • PNG • WMF You may also want to install • TIFF to read and write TIFF images. • Ghostscript, to read and write PDF and Postscript files. • LCMS, to perform ICC CMS color management. • libexif, to handle EXIF tags • libxml, to read SVG images • the ZLIB library, to handle compressed PNG and MIFF images. • the BZIP library, to read and write bzip2-compressed MIFF images. These libraries are usually available as binary installs (.deb, .rpm, etc.). Otherwise, most of the delegate libraries are available as source tarballs from http://www.imagemagick.org/pub/delegates/ and from their respective web sites. You must also have an X server installed to use the display and animate methods
