Difference between revisions of "Libjpeg"
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− | == Introduction to | + | == Introduction to Libjpeg == |
− | + | Libjpeg is a library developed by the Independent JPEG Group for JPEG image compression. | |
+ | |||
+ | '''Project Home Page''': http://www.ijg.org/ | ||
== Dependencies == | == Dependencies == | ||
− | == | + | == 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 call '''make install''' as follows: | ||
− | + | make bindir=<DESTDIR>/usr/bin \ | |
+ | mandir=<DESTDIR>/usr/man/man1 \ | ||
+ | libdir=<DESTDIR>/usr/lib \ | ||
+ | includedir=<DESTDIR>/usr/include install | ||
− | + | Of course <DESTDIR> is whatever path that you'd normally set DESTDIR to, and if you're installing the N32 or 64Bit versions, you need to change libdir to /usr/lib32 or /usr/lib64 as appropriate. | |
− | |||
− | |||
− | |||
− | You also have to create the target directories before running make install: | + | You also have to create the target directories before running '''make install''' since it won't create them for you: |
install -dv <DESTDIR>/usr/bin | install -dv <DESTDIR>/usr/bin |
Revision as of 23:25, 11 January 2007
Download Source: | http://www.ijg.org/files/jpegsrc.v8d.tar.gz |
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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 |
Contents
Introduction to Libjpeg
Libjpeg is a library developed by the Independent JPEG Group for JPEG image compression.
Project Home Page: http://www.ijg.org/
Dependencies
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 call make install as follows:
make bindir=<DESTDIR>/usr/bin \ mandir=<DESTDIR>/usr/man/man1 \ libdir=<DESTDIR>/usr/lib \ includedir=<DESTDIR>/usr/include install
Of course <DESTDIR> is whatever path that you'd normally set DESTDIR to, and if you're installing the N32 or 64Bit versions, you need to change libdir to /usr/lib32 or /usr/lib64 as appropriate.
You also have to create the target directories before running make install since it won't create them for you:
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 |
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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. |
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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. |