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Cached) yes checking for gcc option to accept ANSI C... (cached) none needed checking dependency style of gcc... (cached) gcc3 checking if malloc debugging is wanted... no ... Again, I’ve truncated the output so as to not fill the entire book with command output. I’ll show the last few lines from the output, though, because they’re important: ImageMagick is configured as follows. Please verify that this configuration matches your expectations. qxd 14 11/17/05 3:06 PM Page 14 CHAPTER 1 ■ INSTALLING AND CONFIGURING IMAGEMAGICK LIBS = -lMagick -ltiff -lfreetype -ljpeg -lpng -lXext -lXt -lSM ➥ -lICE -lX11 -lxml2 -lz -lpthread -lm -lpthread CXX = g++ CXXFLAGS = -pthread This dump shows all the features that ImageMagick has found available on your system and is going to enable during the compile.

If you do need to pass in configure arguments, you can browse through the Makefile to see which arguments exist. To install ImageMagick, simply go to the directory, and run the proper installation command, like so: cd /usr/ports/graphics/ImageMagick make install distclean When new versions of ImageMagick are released, you’ll want to upgrade your installation. qxd 11/17/05 3:06 PM Page 15 CHAPTER 1 ■ INSTALLING AND CONFIGURING IMAGEMAGICK cd /usr/ports/sysutil/portupgrade make install distclean Once you have the portupgrade package installed, you can check for any out-of-date packages with the following command: /usr/local/sbin/portversion | grep '<' Any out-of-date packages will be displayed as follows: courier-imap gettext glib ImageMagick < < < < To update a package, use the portupgrade command as such: /usr/local/sbin/portupgrade ImageMagick Compiling ImageMagick on Microsoft Windows It’s possible that you’ll want to install ImageMagick from source code on a Microsoft Windows system.

2 megabytes 1,280×960 784 kilobytes 640×480 280 kilobytes 320×240 112 kilobytes 160×120 56 kilobytes 80×60 36 kilobytes You can also see from Table 2-1 that the advantage of reducing the size of an image in terms of side length compared with file size on disk decreases as the image gets smaller. For example, reducing the side length from 160×120 pixels to 80×60 pixels reduces the size of the file by less than 50 percent, whereas reducing the side length from 2560×1920 to 1280×960 reduces the size of the file by about 70 percent.

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