Libjpeg

Download Source:	http://www.ijg.org/files/jpegsrc.v8d.tar.gz
Required Patch:	http://svn.cross-lfs.org/svn/repos/patches/jpeg/jpeg-8d-config_update-1.patch
Required Patch for PowerPC:	http://svn.cross-lfs.org/svn/repos/patches/jpeg/jpeg-8d-ppc-1.patch

---

Introduction to libjpeg

The libjpeg package contains libraries that allow compression of image files based on the Joint Photographic Experts Group standard. It is a "lossy" compression algorithm.

Additional Configuration Options

Note to DESTDIR fans: Unfortunately libjpeg ignores DESTDIR and has no equivalent, so you're going to have to either edit the Makefile, or you have to pass the following flags to make install (with <DESTDIR> of course being what you would normally set DESTDIR to):

bindir=<DESTDIR>/usr/bin
mandir=<DESTDIR>/usr/man/man1,
libdir=<DESTDIR>/usr/lib (or lib32 or lib64)
includedir=<DESTDIR>/usr/include

You also have to create the target directories before running make install:

 install -dv <DESTDIR>/usr/bin
 install -dv <DESTDIR>/usr/man/man1
 install -dv <DESTDIR>/usr/lib (or lib{32} or lib{64})
 install -dv <DESTDIR>/usr/include

Non-Multilib

Compile the package:

patch -Np1 -i ../jpeg-8d-config_update-1.patch &&
./configure --prefix=/usr --enable-static --enable-shared &&
make

Install the package

make install

Command Explanations

--enable-static --enable-shared: These switches tell libjpeg to build both shared and static libraries.

Multilib

32Bit

Compile the package:

patch -Np1 -i ../jpeg-8d-config_update-1.patch &&
CC="gcc ${BUILD32}" ./configure --prefix=/usr --enable-static --enable-shared &&
make

Install the package

make install

N32

Compile the package:

patch -Np1 -i ../jpeg-8d-config_update-1.patch &&
CC="gcc ${BUILDN32}" ./configure --prefix=/usr --libdir=/usr/lib32 \
    --enable-static --enable-shared &&
make libdir=/usr/lib32

Install the package

make libdir=/usr/lib32 install

64Bit

Compile the package:

patch -Np1 -i ../jpeg-8d-config_update-1.patch &&
CC="gcc ${BUILD64}" ./configure --prefix=/usr --libdir=/usr/lib64 \
    --enable-static --enable-shared &&
make libdir=/usr/lib64

Install the package

make libdir=/usr/lib64 install

Contents

Installed Programs:	cjpeg, djpeg, jpegtran, rdjpgcom, and wrjpgcom
Installed Libraries:	libjpeg.{so,a}
Installed Directories:	None

Short Descriptions

cjpeg	compresses image files to produce a JPEG/JFIF file on the standard output. Currently supported input file formats are: PPM (PBMPLUS color format), PGM (PBMPLUS gray-scale format), BMP, and Targa.
djpeg	decompresses image files from JPEG/JFIF format to either PPM (PBMPLUS color format), PGM (PBMPLUS gray-scale format), BMP, or Targa format.
jpegtran	is used for lossless transformation of JPEG files.
rdjpgcom	displays text comments from within a JPEG file.
wrjpgcom	inserts text comments into a JPEG file.
libjpeg.{so,a}	library is used by many programs for reading and writing JPEG format files.