Libjpeg: Difference between revisions

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{| style="text-align: left; background-color: AliceBlue;"
{| style="text-align: left; background-color: AliceBlue;"
|-
|-valign="top"
!Download Source:
!Download Source:
| http://www.ijg.org/files/jpegsrc.v6b.tar.gz
| http://www.ijg.org/files/jpegsrc.v{{Libjpeg-Version}}.tar.gz
|-
!Required Patch:
| http://svn.cross-lfs.org/svn/repos/patches/jpeg/jpeg-6b-config_update-1.patch
|-
!Required Patch for PowerPC:
| http://svn.cross-lfs.org/svn/repos/patches/jpeg/jpeg-6b-ppc-1.patch
|}
|}


----
----


== Introduction to libjpeg ==
{{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 ==
Line 23: Line 15:
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
Line 30: Line 21:


  make install
  make install
=== Command Explanations ===
''--enable-static --enable-shared'': These switches tell libjpeg to build both shared and static libraries.


== Multilib ==
== Multilib ==
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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
Line 49: Line 43:
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 &&
Line 62: Line 55:
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 &&
Line 70: Line 62:


  make libdir=/usr/lib64 install
  make libdir=/usr/lib64 install
= Contents =
{| style="text-align: left;"
|-valign="top"
! Installed Programs:
| cjpeg, djpeg, jpegtran, rdjpgcom, and wrjpgcom
|-valign="top"
! Installed Libraries:
| libjpeg.{a,la,so}
|-valign="top"
! Installed Directories:
| None
|}
=== Short Descriptions ===
{| style="text-align: left;"
|-valign="top"
! 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.
|-valign="top"
! djpeg
| decompresses image files from JPEG/JFIF format to either PPM (PBMPLUS color format), PGM (PBMPLUS gray-scale format), BMP, or Targa format.
|-valign="top"
! jpegtran
| is used for lossless transformation of JPEG files.
|-valign="top"
! rdjpgcom
| displays text comments from within a JPEG file.
|-valign="top"
! wrjpgcom
| inserts text comments into a JPEG file.
|-valign="top"
! libjpeg.{so,a}
| library is used by many programs for reading and writing JPEG format files.
|}
[[Category:Graphics Libraries]]

Latest revision as of 11:40, 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.
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