1 /* FLAC - Free Lossless Audio Codec
2 * Copyright (C) 2001-2009 Josh Coalson
3 * Copyright (C) 2011-2013 Xiph.Org Foundation
5 * This file is part the FLAC project. FLAC is comprised of several
6 * components distributed under different licenses. The codec libraries
7 * are distributed under Xiph.Org's BSD-like license (see the file
8 * COPYING.Xiph in this distribution). All other programs, libraries, and
9 * plugins are distributed under the LGPL or GPL (see COPYING.LGPL and
10 * COPYING.GPL). The documentation is distributed under the Gnu FDL (see
11 * COPYING.FDL). Each file in the FLAC distribution contains at the top the
12 * terms under which it may be distributed.
14 * Since this particular file is relevant to all components of FLAC,
15 * it may be distributed under the Xiph.Org license, which is the least
16 * restrictive of those mentioned above. See the file COPYING.Xiph in this
21 FLAC is an Open Source lossless audio codec developed by Josh Coalson from 2001
24 From January 2012 FLAC is being maintained by Erik de Castro Lopo under the
25 auspices of the Xiph.org Foundation.
28 * `libFLAC', a library which implements reference encoders and
29 decoders for native FLAC and Ogg FLAC, and a metadata interface
30 * `libFLAC++', a C++ object wrapper library around libFLAC
31 * `flac', a command-line program for encoding and decoding files
32 * `metaflac', a command-line program for viewing and editing FLAC
34 * player plugin for XMMS
35 * user and API documentation
37 The libraries (libFLAC, libFLAC++) are
38 licensed under Xiph.org's BSD-like license (see COPYING.Xiph). All other
39 programs and plugins are licensed under the GNU General Public License
40 (see COPYING.GPL). The documentation is licensed under the GNU Free
41 Documentation License (see COPYING.FDL).
44 ===============================================================================
45 FLAC - 1.3.0 - Contents
46 ===============================================================================
50 - Note to embedded developers
51 - Building in a GNU environment
52 - Building with Makefile.lite
54 - Building on Mac OS X
57 ===============================================================================
59 ===============================================================================
61 This is the source release for the FLAC project. See
65 for full documentation.
67 A brief description of the directory tree:
69 doc/ the HTML documentation
70 examples/ example programs demonstrating the use of libFLAC and libFLAC++
71 include/ public include files for libFLAC and libFLAC++
72 man/ the man pages for `flac' and `metaflac'
73 src/ the source code and private headers
74 test/ the test scripts
76 If you have questions about building FLAC that this document does not answer,
77 please submit them at the following tracker so this document can be improved:
79 https://sourceforge.net/p/flac/support-requests/
82 ===============================================================================
84 ===============================================================================
86 To build FLAC with support for Ogg FLAC you must have built and installed
87 libogg according to the specific instructions below. You must have
88 libogg 1.1.2 or greater, or there will be seeking problems with Ogg FLAC.
90 If you are building on x86 and want the assembly optimizations, you will
91 need to have NASM >= 0.98.30 installed according to the specific instructions
95 ===============================================================================
96 Note to embedded developers
97 ===============================================================================
99 libFLAC has grown larger over time as more functionality has been
100 included, but much of it may be unnecessary for a particular embedded
101 implementation. Unused parts may be pruned by some simple editing of
102 configure.ac and src/libFLAC/Makefile.am; the following dependency
103 graph shows which modules may be pruned without breaking things
117 In other words, for pure decoding applications, both the stream encoder
118 and metadata editing interfaces can be safely removed.
120 There is a section dedicated to embedded use in the libFLAC API
121 HTML documentation (see doc/html/api/index.html).
123 Also, there are several places in the libFLAC code with comments marked
124 with "OPT:" where a #define can be changed to enable code that might be
125 faster on a specific platform. Experimenting with these can yield faster
129 ===============================================================================
130 Building in a GNU environment
131 ===============================================================================
133 FLAC uses autoconf and libtool for configuring and building.
134 Better documentation for these will be forthcoming, but in
135 general, this should work:
137 ./configure && make && make check && make install
139 The 'make check' step is optional; omit it to skip all the tests,
140 which can take several hours and use around 70-80 megs of disk space.
141 Even though it will stop with an explicit message on any failure, it
142 does print out a lot of stuff so you might want to capture the output
143 to a file if you're having a problem. Also, don't run 'make check'
144 as root because it confuses some of the tests.
146 NOTE: Despite our best efforts it's entirely possible to have
147 problems when using older versions of autoconf, automake, or
148 libtool. If you have the latest versions and still can't get it
149 to work, see the next section on Makefile.lite.
151 There are a few FLAC-specific arguments you can give to
154 --enable-debug : Builds everything with debug symbols and some
155 extra (and more verbose) error checking.
157 --disable-asm-optimizations : Disables the compilation of the
158 assembly routines. Many routines have assembly versions for
159 speed and `configure' is pretty good about knowing what is
160 supported, but you can use this option to build only from the
161 C sources. May be necessary for building on OS X (Intel).
163 --enable-sse : If you are building for an x86 CPU that supports
164 SSE instructions, you can enable some of the faster routines
165 if your operating system also supports SSE instructions. flac
166 can tell if the CPU supports the instructions but currently has
167 no way to test if the OS does, so if it does, you must pass
168 this argument to configure to use the SSE routines. If flac
169 crashes when built with this option you will have to go back and
170 configure without --enable-sse. Note that
171 --disable-asm-optimizations implies --disable-sse.
173 --enable-local-xmms-plugin : Installs the FLAC XMMS plugin in
174 $HOME/.xmms/Plugins, instead of the global XMMS plugin area
175 (usually /usr/lib/xmms/Input).
179 --with-libiconv-prefix=
180 Use these if you have these packages but configure can't find them.
182 If you want to build completely from scratch (i.e. starting with just
183 configure.ac and Makefile.am) you should be able to just run 'autogen.sh'
184 but make sure and read the comments in that file first.
187 ===============================================================================
188 Building with Makefile.lite
189 ===============================================================================
191 There is a more lightweight build system for do-it-yourself-ers.
192 It is also useful if configure isn't working, which may be the
193 case since lately we've had some problems with different versions
194 of automake and libtool. The Makefile.lite system should work
195 on GNU systems with few or no adjustments.
197 From the top level just 'make -f Makefile.lite'. You can
198 specify zero or one optional target from 'release', 'debug',
199 'test', or 'clean'. The default is 'release'. There is no
200 'install' target but everything you need will end up in the
203 If you are not on an x86 system or you don't have nasm, you
204 may have to change the DEFINES in src/libFLAC/Makefile.lite. If
205 you don't have nasm, remove -DFLAC__HAS_NASM. If your target is
206 not an x86, change -DFLAC__CPU_IA32 to -DFLAC__CPU_UNKNOWN.
209 ===============================================================================
211 ===============================================================================
213 There are .vcproj projects and a master FLAC.sln solution to build all
214 the libraries and executables with MSVC 2005 or newer.
216 Prerequisite: you must have the Ogg libraries installed as described
219 Prerequisite: you must have nasm installed, and nasm.exe must be in
220 your PATH, or the path to nasm.exe must be added to the list of
221 directories for executable files in the MSVC global options.
223 To build everything, run Visual Studio, do File|Open and open FLAC.sln.
224 From the dropdown in the toolbar, select "Release" instead of "Debug",
225 then do Build|Build Solution.
227 This will build all libraries both statically (e.g.
228 objs\release\lib\libFLAC_static.lib) and as DLLs (e.g.
229 objs\release\lib\libFLAC.dll), and it will build all binaries, statically
230 linked (e.g. objs\release\bin\flac.exe).
232 Everything will end up in the "objs" directory. DLLs and .exe files
233 are all that are needed and can be copied to an installation area and
236 By default the code is configured with Ogg support. Before building FLAC
237 you will need to get the Ogg source distribution
238 (see http://xiph.org/downloads/), build libogg_static.lib (load
239 win32\libogg_static.sln, change solution configuration to "Release" and
240 code generation to "Multi-threaded (/MT)", then build), copy libogg_static.lib
241 into FLAC's 'objs\release\lib' directory, and copy the entire include\ogg tree
242 into FLAC's 'include' directory (so that there is an 'ogg' directory in FLAC's
243 'include' directory with the files ogg.h, os_types.h and config_types.h).
245 If you want to build without Ogg support, instead edit all .vcproj files
246 and remove any "FLAC__HAS_OGG" definitions.
249 ===============================================================================
251 ===============================================================================
253 If you have Fink or a recent version of OS X with the proper autotools,
254 the GNU flow above should work.