How to install JPype on OS X Lion to use with Neo4j?

Question

I am trying to use Neo4j for a project, and want to interface with it through Python since I\'m a newbie to programming and don\'t know any Java. I\'m following the installa

Answer 1

Here's what worked for me - recommend you put the first line in your profile.

export JAVA_HOME=$(/usr/libexec/java_home) cd $JAVA_HOME sudo ln -s include Headers sudo cp include/darwin/* include/ cd -

Note that instead of changing setup.py, I'm changing my JDK install. This has the advantage of fixing the issue for other projects.

Answer 2

For those trying to install on Mountain Lion, I had to further edit the setup.py file to include the header files here:

/System/Library/Frameworks/JavaVM.framework/Versions/Current/Headers

Answer 3

I'm not a Python guy, but tried installing JPype on my machine:

% uname -a
Darwin fatty-i7.local.tld 11.2.0 Darwin Kernel Version 11.2.0: Tue Aug  9 20:54:00 PDT 2011; root:xnu-1699.24.8~1/RELEASE_X86_64 x86_64
% java -version
java version "1.6.0_29"
Java(TM) SE Runtime Environment (build 1.6.0_29-b11-402-11M3527)
Java HotSpot(TM) 64-Bit Server VM (build 20.4-b02-402, mixed mode)

On OSX Lion, the latest JDK appears to be located here:

/Developer/SDKs/MacOSX10.7.sdk/System/Library/Frameworks/JavaVM.framework/

A little googling turned up this post: http://blog.y3xz.com/post/5037243230/installing-jpype-on-mac-os-x

I followed those instructions to modify setup.py, then ran sudo python setup.py install with no problems.

Does that help?

Answer 4

For me,

self.javaHome = '/System/Library/Frameworks/JavaVM.framework/Versions/Current/'

worked.

$ uname -a Darwin  11.4.0 Darwin Kernel Version 11.4.0: Mon Apr 9 19:32:15 PDT 2012; root:xnu-1699.26.8~1/RELEASE_X86_64 x86_64 

$ java -version java version "1.6.0_33" Java(TM) SE Runtime Environment (build 1.6.0_33-b03-424-11M3720) Java HotSpot(TM) 64-Bit Server VM (build 20.8-b03-424, mixed mode)

Answer 5

Here are directions I put in my README to install JPype on OS X 10.7. Same idea as the answers here but different enough to warrant the submission.

The python interface to java (JPype) needs mods to the setup.py: In summary, you need to make sure the JPype setup.py script can see your Java SDK "Headers" and "Home" directory I had to install Java from Apple first since my default OS X installation did not come with Headers in the typical Java install path which I found by executing:

/usr/libexec/java_home

If you do happen to have a Headers dir, you probably do not need to reinstall Java and can set the path vars below based on your java HOME directory which is likely different from those in these directions

After I installed Java, I found the new installation in:

/Library/Java/JavaVirtualMachines/

My Home directory was:

/Library/Java/JavaVirtualMachines/1.6.0_37-b06-434.jdk/Contents/Home/

and my Header directory was:

/Library/Java/JavaVirtualMachines/1.6.0_37-b06-434.jdk/Contents/Headers/

1) The JPype script assumes that Headers is within the Home directory but it's not, so I changed the Home path var and created a new Content path var in the setup.py script - In setupMacOSX(self):

self.javaHome = '/Library/Java/JavaVirtualMachines/1.6.0_37-b06-434.jdk/Contents/Home/'
self.javaContents = '/Library/Java/JavaVirtualMachines/1.6.0_37-b06-434.jdk/Contents/'

2) In setupMacOSX(self), change self.libraryDir:

self.libraryDir = [self.javaContents + "/Libraries"]

• Note that this step was mentioned as required but I did not have to do this for it to work so maybe try without it first

3) In setupInclusion, add paths to your "Home/include" dir and your "Headers" dir:

self.javaHome+"/include", 
self.javaContents + "/Headers",

4) Running the installation should now work:

sudo python setup.py install

Answer 6

On my Lion, the "include" directory in the JDK was gone, so JPype couldn't find jni.h.

I updated setup.py in two places, one to set where to find jar libraries:

def setupMacOSX(self):
    self.javaHome = '/System/Library/Frameworks/JavaVM.framework'
    self.jdkInclude = ""
    self.libraries = ["dl"]
    self.libraryDir = [self.javaHome+"/Home/lib"]
    self.macros = [('MACOSX',1)]

And one to set where to find jni.h:

def setupInclusion(self):
    self.includeDirs = [
        self.javaHome+"/Headers",
        <other stuff>