Beyond Linux® From Scratch (System V Edition) - Version 12.2

Chapter 42. Multimedia Libraries and Drivers

x265-3.6

Introduction to x265

x265 package provides a library for encoding video streams into the H.265/HEVC format.

This package is known to build and work properly using an LFS 12.2 platform.

Package Information

x265 Dependencies

Required

CMake-3.30.2

Recommended

NASM-2.16.03

Optional

numactl

Installation of x265

Install x265 by running the following commands: 

mkdir bld &&
cd    bld &&

cmake -D CMAKE_INSTALL_PREFIX=/usr \
      -W no-dev ../source          &&
make

This package does not come with a test suite.

[Important]

Important

If downgrading from the bleeding-edge x265-20240812 (it had been mistakenly used in the BLFS development book for several days), remove the shared library from x265-20240812 as the root user: 

rm -fv /usr/lib/libx265.so.212

This is for preventing ldconfig from recreating the symlink libx265.so with the target /usr/lib/libx265.so.212 which seems to be “a newer version” of libx265.so.209 from x265-3.6.

To install the package, first remove any old library versions. After installation, remove a static library. As the root user: 

make install &&
rm -vf /usr/lib/libx265.a

Command Explanations

-W no-dev: This switch is used to suppress warnings intended for the package developers.

rm -vf /usr/lib/libx265.a: BLFS does not recommend using static libraries.

Contents

Installed Program: x265
Installed Library: libx265.so
Installed Directories: None

Short Descriptions

libx265.so

provides the functions used to encode video streams into the H.265/HEVC format