Zirconium Linux From Scratch - Version r12.4-45-systemd

Chapter 13. Preparing FFMpeg and Support Libraries

x265-4.1

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 12.4 platform.

Package Information

x265 Dependencies

Required

CMake-4.1.3

Recommended

NASM-3.01

Optional

numactl

Installation of x265

First, remove some CMake policy settings that are no longer compatible with CMake-4.0 and later: 

sed -r '/cmake_policy.*(0025|0054)/d' -i source/CMakeLists.txt

Prepare x265 by running the following commands: 

cmake -B bld -S source -D CMAKE_INSTALL_PREFIX=/usr \
      -D GIT_ARCHETYPE=1                  \
      -D CMAKE_POLICY_VERSION_MINIMUM=3.5 \
      -W no-dev
cmake --build bld

This package does not come with a test suite.

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

cmake --install bld
rm -vf /usr/lib/libx265.a

Command Explanations

-D GIT_ARCHETYPE=1: This switch is needed because the build system will not generate a pkg-config file or install a shared library unless "git" is installed. Git isn't required for anything else in this package, so this switch is used to work around it for users who do not want to install Git as a build dependency.

-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