JMagick OS X Ports

Updated: 2-19-2008 5:35PM EST

Note: Binaries and source distributed without any warranties and licensed under the LGPL.

Initial port of JMagick, the JNI-based interface into the popular C/C++ ImageMagick API, to OS X Leopard 10.5.1 by Eric O'Laughlen.

Distribution is based upon ImageMagick dist version 6.3.6-9_0 (lib verson libMagick.10.0.9.dylib). The architecture of the compiled dependencies and library is: Mach-O dynamically linked shared library i386, so no universal libs in this distribution yet.

Overview:

Here's a quick list of what changed in the code:

• New configure script option: --with-shared-lib-ext [defaults to .so]. This helped with allowing the extension to be changed during the make process (i.e., looked to be hardcoded to .so in spots or not always appended correctly).

  The build process, for OS X at the moment, creates a dynamic library that can be loaded with dlopen (MH_DYLIB), etc. Although it appears to work, it is just a quick workaround. In the future I imagine it would be better to have the configure script handle dynamic libs and bundles with an option and the extensions then added seamlessly.

• The binary distribution comes with prebuilt MacPorts dependencies: ibexpat.1.dylib, libtiff.3.dylib, libMagick.10.dylib, libfontconfig.1.dylib, libz.1.dylib, libWand.10.dylib, libfreetype.6.dylib, libbz2.1.dylib, libjpeg.62.dylib

• The build process builds the binaries and jar files with a version number (noted below)

Note: The build process attaches the version as a part of the filename. For example the lib name looks something like libJMagick-6.2.6.dylib with a symlink to libJMagick.dylib.

The symlink ensures that Java-based calls to load the shared object work (e.g., make test):

static {
     System.loadLibrary("JMagick"); 
}

Ongoing: Eric is in touch with the JMagick listserv concerning the changes. The desire isn't to manage a separate code base; however, the binaries could still be provided to the community as needed for OS X.