Beyond Linux® From Scratch (systemd Edition) - Version r12.0-816

Chapter 42. Multimedia Libraries and Drivers

libvpx-1.13.1

Introduction to libvpx

This package, from the WebM project, provides the reference implementations of the VP8 Codec, used in most current html5 video, and of the next-generation VP9 Codec.

[Note]

Note

Development versions of BLFS may not build or run some packages properly if LFS or dependencies have been updated since the most recent stable versions of the books.

Package Information

libvpx Dependencies

Recommended

yasm-1.3.0 or NASM-2.16.01, and Which-2.21 (so configure can find yasm)

Optional

cURL-8.4.0 (to download test files) and Doxygen-1.9.8 (to build documentation)

[Note]

Note

An Internet connection is needed for some tests of this package.

Installation of libvpx

Install libvpx by running the following commands: 

sed -i 's/cp -p/cp/' build/make/Makefile &&

mkdir libvpx-build            &&
cd    libvpx-build            &&

../configure --prefix=/usr    \
             --enable-shared  \
             --disable-static &&
make

To test the results, issue: LD_LIBRARY_PATH=. make test. The test suite downloads many files as part of its test process. A few parts of it will use all available cores.

Now, as the root user: 

make install

Command Explanations

sed ... : This command corrects ownership and permissions of installed files.

mkdir libvpx-build && cd libvpx-build: The libvpx developers recommend building in a dedicated build directory.

--disable-static: This switch prevents installation of static versions of the libraries.

--disable-vp8: This switch prevents building of VP8 codec support.

--disable-vp9: This switch prevents building of VP9 codec support.

--target=generic-gnu: This switch disables optimizations specific for x86 and x86-64, allowing to build this package without nasm and yasm installed.

LD_LIBRARY_PATH=.: This is needed for the test suite to use the library that was just built.

Contents

Installed Programs: vpxdec and vpxenc
Installed Libraries: libvpx.so
Installed Directories: /usr/include/vpx

Short Descriptions

vpxdec

is the WebM Project VP8 and VP9 decoder

vpxenc

is the WebM project VP8 and VP9 encoder

libvpx.so

provides functions to use the VP8 and VP9 video codecs