Libjpeg: Difference between revisions
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!Download Source: | !Download Source: | ||
| http://www.ijg.org/files/jpegsrc.v6b.tar.gz | | http://www.ijg.org/files/jpegsrc.v6b.tar.gz | ||
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!Required Patch: | !Required Patch: | ||
| http://svn.cross-lfs.org/svn/repos/patches/jpeg/jpeg-6b-config_update-1.patch | | http://svn.cross-lfs.org/svn/repos/patches/jpeg/jpeg-6b-config_update-1.patch | ||
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!Required Patch for PowerPC: | !Required Patch for PowerPC: | ||
| http://svn.cross-lfs.org/svn/repos/patches/jpeg/jpeg-6b-ppc-1.patch | | http://svn.cross-lfs.org/svn/repos/patches/jpeg/jpeg-6b-ppc-1.patch | ||
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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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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.{so,a} | |||
|-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. | |||
|} | |||
Revision as of 23:12, 11 December 2006
| Download Source: | http://www.ijg.org/files/jpegsrc.v6b.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
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
Non-Multilib
Compile the package:
patch -Np1 -i ../jpeg-6b-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-6b-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-6b-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-6b-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. |
