Just to add to Nathan's comments, you're missing a "libraries" that points 
to the the HDF5 shared library that was compiled separately.  for example: 
 'libraries': ['/home/user/hdf5/lib/hdf5.so']

Also, I noticed that when compiling with node-gyp (which I love btw) you 
need to set LD_LIBRARY_PATH environment variable to the directory where the 
HDF5 shared library is located.  for example:   
export LD_LIBRARY_PATH=$LD_LIBRARY_PATH:/home/user/hdf5/lib

after you do that, try building your project again.

Roy

On Saturday, April 21, 2012 9:50:49 PM UTC-4, Ryan Cole wrote:
>
> Hello,
>
> I'm learning how to write C++ modules, for Node.js. I'm sort of 
> brute-forcing my learning by looking at examples, referencing the 
> documentation for v8 and trial and error. The only two modules that I can 
> seem to think of, as a reference, are hiredis-node and node.bcrypt.js. Both 
> have helped me get to where I am now, which is able to compile a base 
> skeleton module, using node-gyp. Are there any other modules that are 
> written in C++ that would be simple + good to reference?
>
> For example, I'm currently trying to write a module that simply wraps and 
> exposes a class from an existing third-party lib, HDF5. I've got it all 
> written to the point where I think I am supposed to initialize an object of 
> that class I want to expose, but when I include the code to initialize it, 
> I cannot `require` it from within Node. It will compile, but I cannot 
> require it. I do not think it is actually compiling properly. The HDF5 lib 
> comes with a special wrapper binary around g++ that sets up the compile 
> environment for you, so I guess I need to figure out how to tell node-gyp 
> to use that.
>
> My code is here, if anyone wants to take a peek: 
> https://github.com/ryancole/node-hdf5
>
> Thanks
>

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