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Is freetype2 loaded?

Posted on 2004-09-24
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Last Modified: 2013-12-25
I have a CGI application that can use freetype2 if it is loaded, in my installation program I am trying to automatically determine if freetype2 is loaded (instead of just asking the installer) does anyone know how to query the system to see if freetype2 is installed (without loading the library which can cause the program to fail)?
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Question by:healthstatus
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6 Comments
 
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by:hernst42
hernst42 earned 250 total points
ID: 12152490
You can check if the lib libfreetype.so.6 is found in the directories listed in the envirnoment variable LD_LIBRARY_PATH and the pathes listed in /etc/ld.so.conf . If that files is found the lib should be available.
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Expert Comment

by:ITcrow
ID: 12191896

In Linux:
rpm -q freetype
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Author Comment

by:healthstatus
ID: 12193692
Will the LD_LIBRARY_PATH be set on a Windows box, or just the *nixes?
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Expert Comment

by:hernst42
ID: 12193853
That variable will only be available on *nixes. So you are using it on windows??
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by:healthstatus
ID: 12193962
Cross platform, Sun, *nix and Windows.  
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by:
ITcrow earned 250 total points
ID: 12195929
LD_LIBRARY_PATH is only good for Solaris and Linux
HPUX uses SH_LIB_PATH

And you cannot rely on the result or existence of this variable as it is not a required variable setting.

Your best bet will be to look at the default location ( directory where fonts are installed )  on your targetted platforms and then check.
-  Find OS
- Get the predefined location for freetype2 fonts on this platform.
- Check if font directory exists.
- Double check by checking the existence of default font files.
- You can be creative and even check if the font file is okay, by comparing it's size or by
   writing something using that font in temp directory and comparing the size of resulting file.
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