LAME-3.100

#### Beyond Linux® From Scratch (systemd Edition) - Version 12.2

### Chapter 43. Audio Utilities

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# LAME-3.100

## Introduction to LAME

The LAME package contains an MP3 encoder and optionally, an MP3 frame analyzer. This is useful for creating and analyzing compressed audio files.

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

### Package Information

- Download (HTTP): https://downloads.sourceforge.net/lame/lame-3.100.tar.gz

- Download MD5 sum: 83e260acbe4389b54fe08e0bdbf7cddb

- Download size: 1.5 MB

- Estimated disk space required: 9.7 MB

- Estimated build time: 0.1 SBU

### LAME Dependencies

#### Optional

Dmalloc, Electric Fence, libsndfile-1.2.2 and NASM-2.16.03

Editor Notes: https://wiki.linuxfromscratch.org/blfs/wiki/lame

## Installation of LAME

Prevent the source code directory from being mistakenly hardcoded as a shared library search path in the installed programs:

    sed -i -e 's/^\(\s*hardcode_libdir_flag_spec\s*=\).*/\1/' configure

Install LAME by running the following commands:

    ./configure --prefix=/usr --enable-mp3rtp --disable-static &&
    make

To test the results, issue: LD_LIBRARY_PATH=libmp3lame/.libs make test.

Now, as the `root` user:

    make pkghtmldir=/usr/share/doc/lame-3.100 install

## Command Explanations

`--enable-mp3rtp`: This switch enables building the encode-to-RTP program.

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

`--enable-nasm`: This option enables the use of NASM-2.16.03 to compile optimized assembly routines for 32-bit x86. Note that this has no effect on x86_64.

## Contents

Installed Programs: lame and mp3rtp
Installed Library: libmp3lame.so
Installed Directories: /usr/include/lame and /usr/share/doc/lame-3.100

### Short Descriptions

lame | creates MP3 audio files from raw PCM or `.wav` data
mp3rtp | is used to encode MP3 with RTP streaming of the output
`libmp3lame.so` | provides the functions necessary to convert raw PCM and WAV files to MP3 files

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