forked from minhngoc25a/freetype2
105 lines
3.6 KiB
Plaintext
105 lines
3.6 KiB
Plaintext
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SPECIAL NOTE FOR UNIX USERS
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===========================
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If you are installing this release of FreeType on a system that
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already uses release 2.0.5 (or even an older version), you have to
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perform a few special steps to ensure that everything goes well.
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I. Enable the TrueType bytecode hinter if you need it
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-----------------------------------------------------
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The TrueType bytecode interpreter is disabled in all public
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releases of the FreeType packages for patents reasons (see
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http://www.freetype.org/patents.html for more details).
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However, many Linux distributions do enable the interpreter in the
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FreeType packages (DEB/RPM/etc.) they produce for their platforms.
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If you are using TrueType fonts on your system, you most probably
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want to enable it manually by doing the following:
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- open the file "include/freetype/config/ftoption.h"
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- locate a line that says:
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#undef TT_CONFIG_OPTION_BYTECODE_INTERPRETER
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- change it to:
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#define TT_CONFIG_OPTION_BYTECODE_INTERPRETER
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of course, this must be done _before_ compiling the library
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II. Determine the correct installation path
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-------------------------------------------
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By default, the source package will install the library in
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"/usr/local". However, many Unix distributions now install the
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library in "/usr", since FreeType is becoming a critical system
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component.
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If FreeType is already installed on your system, type
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freetype-config --prefix
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on the command line. This should return the installation path to
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use below (e.g. "/usr" or "/usr/local"). Otherwise, simply use
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"/usr".
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Then, to build and install the library, type:
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./configure --prefix=<yourprefix>
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make
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./install (as root)
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where "<yourprefix>" must be replaced by the prefix returned by
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the "freetype-config" command.
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III. Take care of XFree86 version 4
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-----------------------------------
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Certain recent Linux distributions will install _several_ versions
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of FreeType on your system. For example, on a fresh Mandrake 8.1
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system, you can find the following files:
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/usr/lib/libfreetype.so which links to
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/usr/lib/libfreetype.6.1.0.so
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and
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/usr/X11R6/lib/libfreetype.so which links to
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/usr/X11R6/lib/libfreetype.6.0.so
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Note that these files correspond to two distinct versions of the
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library! It seems that this surprising issue is due to the
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install scripts of recent XFree86 servers (from 4.1.0) which
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irremediably install their own (dated) version of the library in
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"/usr/X11R6/lib".
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In certain _rare_ cases you may experience minor problems if you
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install this release of the library in "/usr" only, namely, that
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certain applications will not benefit from the bug fixes and
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rendering improvements you'd expect.
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There are two good ways to deal with this situation:
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- Install the library _twice_, in "/usr" and in "/usr/X11R6"
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(you have to do that each time you install a new FreeType
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release though).
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- Change the link in /usr/X11R6/lib/libfreetype.so to point to
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/usr/lib/libfreetype.so,
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and get rid of
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/usr/X11R6/lib/libfreetype.6.0.so
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The FreeType Team is not responsible for this problem, so please
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contact either the XFree86 development team or your Linux
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distributor to help clear this issue in case the information given
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here doesn't help.
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