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README

1README - 30 May 2014
2
3Welcome to the WebM VP8/VP9 Codec SDK!
4
5COMPILING THE APPLICATIONS/LIBRARIES:
6  The build system used is similar to autotools. Building generally consists of
7  "configuring" with your desired build options, then using GNU make to build
8  the application.
9
10  1. Prerequisites
11
12    * All x86 targets require the Yasm[1] assembler be installed.
13    * All Windows builds require that Cygwin[2] be installed.
14    * Building the documentation requires Doxygen[3]. If you do not
15      have this package, the install-docs option will be disabled.
16    * Downloading the data for the unit tests requires curl[4] and sha1sum.
17      sha1sum is provided via the GNU coreutils, installed by default on
18      many *nix platforms, as well as MinGW and Cygwin. If coreutils is not
19      available, a compatible version of sha1sum can be built from
20      source[5]. These requirements are optional if not running the unit
21      tests.
22
23    [1]: http://www.tortall.net/projects/yasm
24    [2]: http://www.cygwin.com
25    [3]: http://www.doxygen.org
26    [4]: http://curl.haxx.se
27    [5]: http://www.microbrew.org/tools/md5sha1sum/
28
29  2. Out-of-tree builds
30  Out of tree builds are a supported method of building the application. For
31  an out of tree build, the source tree is kept separate from the object
32  files produced during compilation. For instance:
33
34    $ mkdir build
35    $ cd build
36    $ ../libvpx/configure <options>
37    $ make
38
39  3. Configuration options
40  The 'configure' script supports a number of options. The --help option can be
41  used to get a list of supported options:
42    $ ../libvpx/configure --help
43
44  4. Cross development
45  For cross development, the most notable option is the --target option. The
46  most up-to-date list of supported targets can be found at the bottom of the
47  --help output of the configure script. As of this writing, the list of
48  available targets is:
49
50    armv5te-android-gcc
51    armv5te-linux-rvct
52    armv5te-linux-gcc
53    armv5te-none-rvct
54    armv6-darwin-gcc
55    armv6-linux-rvct
56    armv6-linux-gcc
57    armv6-none-rvct
58    arm64-darwin-gcc
59    armv7-android-gcc
60    armv7-darwin-gcc
61    armv7-linux-rvct
62    armv7-linux-gcc
63    armv7-none-rvct
64    armv7-win32-vs11
65    armv7-win32-vs12
66    armv7s-darwin-gcc
67    mips32-linux-gcc
68    mips64-linux-gcc
69    ppc32-darwin8-gcc
70    ppc32-darwin9-gcc
71    ppc32-linux-gcc
72    ppc64-darwin8-gcc
73    ppc64-darwin9-gcc
74    ppc64-linux-gcc
75    sparc-solaris-gcc
76    x86-android-gcc
77    x86-darwin8-gcc
78    x86-darwin8-icc
79    x86-darwin9-gcc
80    x86-darwin9-icc
81    x86-darwin10-gcc
82    x86-darwin11-gcc
83    x86-darwin12-gcc
84    x86-darwin13-gcc
85    x86-iphonesimulator-gcc
86    x86-linux-gcc
87    x86-linux-icc
88    x86-os2-gcc
89    x86-solaris-gcc
90    x86-win32-gcc
91    x86-win32-vs7
92    x86-win32-vs8
93    x86-win32-vs9
94    x86-win32-vs10
95    x86-win32-vs11
96    x86-win32-vs12
97    x86_64-darwin9-gcc
98    x86_64-darwin10-gcc
99    x86_64-darwin11-gcc
100    x86_64-darwin12-gcc
101    x86_64-darwin13-gcc
102    x86_64-iphonesimulator-gcc
103    x86_64-linux-gcc
104    x86_64-linux-icc
105    x86_64-solaris-gcc
106    x86_64-win64-gcc
107    x86_64-win64-vs8
108    x86_64-win64-vs9
109    x86_64-win64-vs10
110    x86_64-win64-vs11
111    x86_64-win64-vs12
112    universal-darwin8-gcc
113    universal-darwin9-gcc
114    universal-darwin10-gcc
115    universal-darwin11-gcc
116    universal-darwin12-gcc
117    universal-darwin13-gcc
118    generic-gnu
119
120  The generic-gnu target, in conjunction with the CROSS environment variable,
121  can be used to cross compile architectures that aren't explicitly listed, if
122  the toolchain is a cross GNU (gcc/binutils) toolchain. Other POSIX toolchains
123  will likely work as well. For instance, to build using the mipsel-linux-uclibc
124  toolchain, the following command could be used (note, POSIX SH syntax, adapt
125  to your shell as necessary):
126
127    $ CROSS=mipsel-linux-uclibc- ../libvpx/configure
128
129  In addition, the executables to be invoked can be overridden by specifying the
130  environment variables: CC, AR, LD, AS, STRIP, NM. Additional flags can be
131  passed to these executables with CFLAGS, LDFLAGS, and ASFLAGS.
132
133  5. Configuration errors
134  If the configuration step fails, the first step is to look in the error log.
135  This defaults to config.log. This should give a good indication of what went
136  wrong. If not, contact us for support.
137
138VP8/VP9 TEST VECTORS:
139  The test vectors can be downloaded and verified using the build system after
140  running configure. To specify an alternate directory the
141  LIBVPX_TEST_DATA_PATH environment variable can be used.
142
143  $ ./configure --enable-unit-tests
144  $ LIBVPX_TEST_DATA_PATH=../libvpx-test-data make testdata
145
146SUPPORT
147  This library is an open source project supported by its community. Please
148  please email webm-discuss@webmproject.org for help.
149
150