Difference between revisions of "Libjpeg"

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(I added the "Contents" section from BLFS.)
 
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!Download Source:
 
!Download Source:
| http://www.ijg.org/files/jpegsrc.v6b.tar.gz
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| http://www.ijg.org/files/jpegsrc.v{{Libjpeg-Version}}.tar.gz
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!Required Patch:
 
| http://svn.cross-lfs.org/svn/repos/patches/jpeg/jpeg-6b-config_update-1.patch
 
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!Required Patch for PowerPC:
 
| http://svn.cross-lfs.org/svn/repos/patches/jpeg/jpeg-6b-ppc-1.patch
 
 
|}
 
|}
  
 
----
 
----
  
== Introduction to libjpeg ==
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{{Package-Introduction|Libjpeg is a library developed by the Independent JPEG Group for JPEG image compression.|http://www.ijg.org/}}
 
 
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.
 
  
 
== Dependencies ==
 
== Dependencies ==
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Compile the package:
 
Compile the package:
  
patch -Np1 -i ../jpeg-6b-config_update-1.patch &&
 
 
  ./configure --prefix=/usr --enable-static --enable-shared &&
 
  ./configure --prefix=/usr --enable-static --enable-shared &&
 
  make
 
  make
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Compile the package:
 
Compile the package:
  
patch -Np1 -i ../jpeg-6b-config_update-1.patch &&
 
 
  CC="gcc ${BUILD32}" ./configure --prefix=/usr --enable-static --enable-shared &&
 
  CC="gcc ${BUILD32}" ./configure --prefix=/usr --enable-static --enable-shared &&
 
  make
 
  make
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Compile the package:
 
Compile the package:
  
patch -Np1 -i ../jpeg-6b-config_update-1.patch &&
 
 
  CC="gcc ${BUILDN32}" ./configure --prefix=/usr --libdir=/usr/lib32 \
 
  CC="gcc ${BUILDN32}" ./configure --prefix=/usr --libdir=/usr/lib32 \
 
     --enable-static --enable-shared &&
 
     --enable-static --enable-shared &&
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Compile the package:
 
Compile the package:
  
patch -Np1 -i ../jpeg-6b-config_update-1.patch &&
 
 
  CC="gcc ${BUILD64}" ./configure --prefix=/usr --libdir=/usr/lib64 \
 
  CC="gcc ${BUILD64}" ./configure --prefix=/usr --libdir=/usr/lib64 \
 
     --enable-static --enable-shared &&
 
     --enable-static --enable-shared &&
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! Installed Libraries:
 
! Installed Libraries:
| libjpeg.{so,a}
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| libjpeg.{a,la,so}
 
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! Installed Directories:
 
! Installed Directories:
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| library is used by many programs for reading and writing JPEG format files.
 
| library is used by many programs for reading and writing JPEG format files.
 
|}
 
|}
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[[Category:Graphics Libraries]]

Latest revision as of 12:40, 11 November 2009

Download Source: http://www.ijg.org/files/jpegsrc.v8d.tar.gz

Introduction to Libjpeg

Libjpeg is a library developed by the Independent JPEG Group for JPEG image compression.

Project Homepage: http://www.ijg.org/

Dependencies

Non-Multilib

Compile the package:

./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:

CC="gcc ${BUILD32}" ./configure --prefix=/usr --enable-static --enable-shared &&
make

Install the package

make install

N32

Compile the package:

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:

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.{a,la,so}
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.