mirror of https://github.com/freetype/freetype
140 lines
4.8 KiB
Plaintext
140 lines
4.8 KiB
Plaintext
This document contains instructions on how to build the FreeType
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library on Unix systems. This also works for emulations like Cygwin
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or MSys on Win32:
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1. Ensure that you are using GNU Make
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-------------------------------------
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The FreeType build system _exclusively_ works with GNU Make. You
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will not be able to compile the library with the instructions
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below using any other alternative (including BSD Make).
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Check that you have GNU make by running the command:
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make -v
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This should dump some text that begins with:
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GNU Make <version number>
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Copyright (C) <year> Free Software Foundation Inc.
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Note that version 3.81 or higher is *required* or the build will
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fail.
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It is also fine to have GNU Make under another name (e.g. 'gmake')
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if you use the MAKE variable as described below.
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As a special exception, 'makepp' can also be used to build
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FreeType 2. See the file docs/MAKEPP for details.
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For builds with `cmake' please check file `CMakeLists.txt'; this
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is a contributed file not directly supported by the FreeType team.
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2. Regenerate the configure script if needed
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--------------------------------------------
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This only applies if you are building a git snapshot or checkout,
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*not* if you grabbed the sources of an official release.
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You need to invoke the `autogen.sh' script in the top-level
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directory in order to create the `configure' script for your
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platform. Normally, this simply means typing:
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sh autogen.sh
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In case of problems, you may need to install or upgrade Automake,
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Autoconf or Libtool. See `README.git' in the top-level directory
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for more information.
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3. Build and install the library
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--------------------------------
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Say
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./configure --help
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to see the list of possible configuration options and important
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environment variables. The ./configure script will detect some
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prerequisite system libraries (libpng, brotli, etc.) if their
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headers are available at the default locations.
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The following should work on all Unix systems where the `make'
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command invokes GNU Make:
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./configure [options]
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make
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make install (as root)
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The default installation path is `/usr/local'. It can be changed
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with the `--prefix=<path>' option. Example:
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./configure --prefix=/usr
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When using a different command to invoke GNU Make, use the MAKE
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variable. For example, if `gmake' is the command to use on your
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system, do something like:
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MAKE=gmake ./configure [options]
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gmake
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gmake install (as root)
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If this still doesn't work, there must be a problem with your
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system (e.g., you are using a very old version of GNU Make).
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For library identification, FreeType's `configure' script uses the
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`pkg-config' interface: Assuming it needs library `foo', it calls
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the `pkg-config' program to find information on library `foo',
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which in turn looks for a `foo.pc' file installed at the system.
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Some platforms, however, don't come with `pkg-support'; you then
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have to use environment variables as described by `configure
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--help'. Example:
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LIBPNG_CFLAGS="-I/path/to/libpng/include/directory" \
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LIBPNG_LIBS="-L/path/to/libpng/lib/directory" \
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configure ...
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It is possible to compile FreeType in a different directory.
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Assuming the FreeType source files in directory `/src/freetype' a
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compilation in directory `foo' works as follows:
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cd foo
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/src/freetype/configure [options]
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make
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make install
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3.1 Interdependency with HarfBuzz
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.................................
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Note that there is a chicken-and-egg problem currently since the
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HarfBuzz library (used by the auto-hinter to improve support of
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OpenType fonts) depends on FreeType, which can be solved as
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follows in case HarfBuzz is not yet installed on your system.
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1. Call FreeType's `configure' script with option
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`--without-harfbuzz', then compile and install FreeType.
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2. Compile and install HarfBuzz.
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3. Call FreeType's `configure' script without option
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`--without-harfbuzz' (after executing `make distclean'), then
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compile and install FreeType again.
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----------------------------------------------------------------------
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Copyright (C) 2003-2021 by
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David Turner, Robert Wilhelm, and Werner Lemberg.
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This file is part of the FreeType project, and may only be used,
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modified, and distributed under the terms of the FreeType project
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license, LICENSE.TXT. By continuing to use, modify, or distribute
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this file you indicate that you have read the license and understand
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and accept it fully.
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--- end of INSTALL.UNIX ---
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