version: 1.2.5
source: http://trac.osgeo.org/geotiff/

This is a part of my UnixImageIO framework. A script is available to build the framework from sources.

in geotiff source dir:

export MACOSX_DEPLOYMENT_TARGET=10.6
./configure CFLAGS="-Os -arch i386 -arch x86_64"
make
sudo make install

in geotiff source dir:

export MACOSX_DEPLOYMENT_TARGET=10.5
./configure CFLAGS="-Os -arch ppc -arch i386 -arch ppc64 -arch x86_64"
make
sudo make install

in geotiff source dir:

export MACOSX_DEPLOYMENT_TARGET=10.4
./configure CFLAGS="-Os -arch ppc -arch i386 -isysroot /Developer/SDKs/MacOSX10.4u.sdk"
make
sudo make install

On Panther and for a generic single-arch build.

in giflib source dir:

./configure --disable-dependency-tracking CFLAGS=-Os
make
sudo make install

To use the UnixImageIO and PROJ Unix Compatibility Frameworks instead of /usr/local libraries, insert these lines right after './configure' (make sure to leave a space after configure):

--with-proj=/Library/Frameworks/PROJ.framework/unix \
--with-jpeg=/Library/Frameworks/UnixImageIO.framework/unix \
--with-libtiff=/Library/Frameworks/UnixImageIO.framework/unix