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A few words on prerequisites.

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Alexei Podtelezhnikov 2021-04-10 23:32:20 -04:00
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32
docs/INSTALL
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@ -4,17 +4,27 @@ your system and the level of customization you need. Here is a short
overview of the documentation available:
I. Normal installation and upgrades
===================================
I. Prerequisites and dependencies
=================================
0. Modify `include/freetype/config/ftoption.h', if necessary, to
control how the FreeType library gets built. Normally, you don't
need to change anything.
FreeType is a low level C library that only depends on the standard
C library with very few platform-dependent optimizations utilized at
build time. System libraries, such as zlib, Gzip, bzip2, Brotli,
and libpng, might be used to handle compressed fonts or decode
embedded PNG glyphs.
Applications can't control FreeType's behaviour at build time.
To make applications control (some of) FreeType's behaviour at
run-time, look at the documentation of function
`FT_Property_Set'.
FreeType auto-configuration scripts should be able to detect the
prerequisites if the necessary headers are available at the default
locations. Otherwise, modify `include/freetype/config/ftoption.h'
to control how the FreeType library gets built. Normally, you don't
need to change anything.
Applications have very limited control over FreeType's behaviour at
run-time; look at the documentation of function `FT_Property_Set'.
II. Normal installation and upgrades
====================================
1. Unix and Unix-like systems
@ -70,8 +80,8 @@ I. Normal installation and upgrades
directory.
II. Custom builds of the library
================================
III. Custom builds of the library
=================================
Customizing the compilation of FreeType is easy, and allows you to
select only the components of the font engine that you really need.

4
docs/INSTALL.UNIX
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@ -57,7 +57,9 @@ or MSys on Win32:
./configure --help
to see the list of possible configuration options and important
environment variables.
environment variables. The ./configure script will detect some
prerequisite system libraries (libpng, brotli, etc.) if their
headers are available at the default locations.
The following should work on all Unix systems where the `make'
command invokes GNU Make: