====== JPEG ======

//version: __6b__//\\
//source: [[http://www.ijg.org/]]//

This is a part of my [[software:frameworks|UnixImageIO framework]].  An [[uniximageio|Xcode project]] is available to build the framework from sources.

-----

libjpeg is a bit old and parts are out-of-date, and there is a bug, so it needs some patching.  After expanding the tarball, you need to update some files.

First, download this patch for [[/files/macosxport/patches/libtool135update.zip|libtool]], and unzip it into the source.  This contains a couple Mac OS X patches to this version of libtool (updating the source to use the latest libtool is too much work).  Also, download this [[/files/macosxport/patches/jpegpatch.zip|patch]] for the jpeg makefile and unzip it into the source folder (replace the makefile.cfg there).  This corrects install issues.

Now, in the source dir:

<code>
$ cp -f /usr/share/libtool/config.* .
$ patch makefile.cfg makefile.cfg.patch
</code>

Then build for your OSX version:

===== Leopard =====

<code>
export MACOSX_DEPLOYMENT_TARGET=10.5
./configure --enable-shared --disable-static CC=~/bin/ccub_3264 CFLAGS=-Os
make
sudo make install
</code>

===== Tiger =====

<code>
export MACOSX_DEPLOYMENT_TARGET=10.4
./configure --enable-shared --disable-static CC=~/bin/ccub_t CFLAGS=-Os
make
sudo make install
</code>

===== Historical =====

//Old Panther notes.//

Something you can do if you want - a patch for a certain type of malformed jpeg-in-tiff created by old Wang software, pretty obscure. You can skip this if you like. You need the libtiff source for this patch: in the libtiff source ''/contrib/ojpeg'', copy the contents of ''jdhuff_add.c'' and paste it at the end of the jpeg source ''jdhuff.c''. There is nothing to configure here, the rest will be taken care of in libtiff.

<code>
$ ./configure --enable-shared --enable-static
$ make
$ sudo make install
</code>