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vpxdec.c21-Nov-201232.1 KiB

vpxenc.c21-Nov-201253.7 KiB

y4minput.c21-Nov-201229.2 KiB

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README

1vpx Multi-Format Codec SDK
2README - 19 May 2010
3
4Welcome to the WebM VP8 Codec SDK!
5
6COMPILING THE APPLICATIONS/LIBRARIES:
7  The build system used is similar to autotools. Building generally consists of
8  "configuring" with your desired build options, then using GNU make to build
9  the application.
10
11  1. Prerequisites
12
13    * All x86 targets require the Yasm[1] assembler be installed.
14    * All Windows builds require that Cygwin[2] be installed.
15    * Building the documentation requires PHP[3] and Doxygen[4]. If you do not
16      have these packages, you must pass --disable-install-docs to the
17      configure script.
18
19    [1]: http://www.tortall.net/projects/yasm
20    [2]: http://www.cygwin.com
21    [3]: http://php.net
22    [4]: http://www.doxygen.org
23
24  2. Out-of-tree builds
25  Out of tree builds are a supported method of building the application. For
26  an out of tree build, the source tree is kept separate from the object
27  files produced during compilation. For instance:
28
29    $ mkdir build
30    $ cd build
31    $ ../libvpx/configure <options>
32    $ make
33
34  3. Configuration options
35  The 'configure' script supports a number of options. The --help option can be
36  used to get a list of supported options:
37    $ ../libvpx/configure --help
38
39  4. Cross development
40  For cross development, the most notable option is the --target option. The
41  most up-to-date list of supported targets can be found at the bottom of the
42  --help output of the configure script. As of this writing, the list of
43  available targets is:
44
45    armv5te-linux-rvct
46    armv5te-linux-gcc
47    armv5te-symbian-gcc
48    armv6-darwin-gcc
49    armv6-linux-rvct
50    armv6-linux-gcc
51    armv6-symbian-gcc
52    iwmmxt-linux-rvct
53    iwmmxt-linux-gcc
54    iwmmxt2-linux-rvct
55    iwmmxt2-linux-gcc
56    armv7-linux-rvct
57    armv7-linux-gcc
58    mips32-linux-gcc
59    ppc32-darwin8-gcc
60    ppc32-darwin9-gcc
61    ppc64-darwin8-gcc
62    ppc64-darwin9-gcc
63    ppc64-linux-gcc
64    x86-darwin8-gcc
65    x86-darwin8-icc
66    x86-darwin9-gcc
67    x86-darwin9-icc
68    x86-linux-gcc
69    x86-linux-icc
70    x86-solaris-gcc
71    x86-win32-vs7
72    x86-win32-vs8
73    x86_64-darwin9-gcc
74    x86_64-linux-gcc
75    x86_64-solaris-gcc
76    x86_64-win64-vs8
77    universal-darwin8-gcc
78    universal-darwin9-gcc
79    generic-gnu
80
81  The generic-gnu target, in conjunction with the CROSS environment variable,
82  can be used to cross compile architectures that aren't explicitly listed, if
83  the toolchain is a cross GNU (gcc/binutils) toolchain. Other POSIX toolchains
84  will likely work as well. For instance, to build using the mipsel-linux-uclibc
85  toolchain, the following command could be used (note, POSIX SH syntax, adapt
86  to your shell as necessary):
87
88    $ CROSS=mipsel-linux-uclibc- ../libvpx/configure
89
90  In addition, the executables to be invoked can be overridden by specifying the
91  environment variables: CC, AR, LD, AS, STRIP, NM. Additional flags can be
92  passed to these executables with CFLAGS, LDFLAGS, and ASFLAGS.
93
94  5. Configuration errors
95  If the configuration step fails, the first step is to look in the error log.
96  This defaults to config.err. This should give a good indication of what went
97  wrong. If not, contact us for support.
98
99SUPPORT
100  This library is an open source project supported by its community. Please
101  please email webm-users@webmproject.org for help.
102
103