Installing Bzip2-1.0.1

Estimated build time:           1 minute
Estimated required disk space:  3 MB

Installation of Bzip2

Install Bzip2 by running the following commands:

make CC="gcc -static" &&
make PREFIX=$LFS/usr install &&
cd $LFS/usr/bin &&
mv bzcat bunzip2 bzip2 bzip2recover $LFS/bin

Although it's not strictly a part of a basic LFS system it's worth mentioning that a patch for Tar can be downloaded which enables the tar program to compress and uncompress using bzip2/bunzip2 easily. With a plain tar, you have to use constructions like bzcat file.tar.bz|tar xv or tar --use-compress-prog=bunzip2 -xvf file.tar.bz2 to use bzip2 and bunzip2 with tar. This patch provides the -j option so you can unpack a Bzip2 archive with tar xvfj file.tar.bz2. Applying this patch will be mentioned later on when the Tar package is installed.

Command explanations

make CC="gcc -static": This is the method we use to tell gcc that we want bzip2 to be linked statically.

Contents of bzip2-1.0.1

Program Files

bunzip2 (link to bzip2), bzcat (link to bzip2), bzip2 and bzip2recover

Descriptions

bunzip2

Bunzip2 decompresses files that are compressed with bzip2.

bzcat

bzcat (or bzip2 -dc) decompresses all specified files to the standard output.

bzip2

bzip2 compresses files using the Burrows-Wheeler block sorting text compression algorithm, and Huffman coding. Compression is generally considerably better than that achieved by more conventional LZ77/LZ78-based compressors, and approaches the performance of the PPM family of statistical compressors.

bzip2recover

bzip2recover recovers data from damaged bzip2 files.

Library Files

libbz2.[a,so]

libbz2

libbz2 is the library for implementing lossless, block-sorting data compression using the Burrows-Wheeler algorithm.

Dependencies

Bzip2-1.0.1 needs the following to be installed:


bash: sh
binutils: ar, as, ld
fileutils: cp, ln, rm
gcc: gcc
make: make