[xsd-users] Request for Mac OS X 64-bit binaries

[Boris Kolpackov]

Hi Randall,

Randall Britten <r.britten at auckland.ac.nz> writes:

> I’m trying out XSD, and I’ve managed to generate code and compile 
> code for the schema document of interest (http://www.fieldml.org/
> resources/xml/0.5/FieldML_0.5.xsd).  I used homebrew to install
> xerces-c, and so I think its libraries are 64-bit, so I haven’t
> managed to link yet.  Would it be possible for you to please
> make 64-bit Mac OS X binaries available?

I don't see how a 64-bit binary of the XSD compiler will help you
here. If you are able to run the existing MacOS XSD binary (and you
are), then you don't need a 64-bit one. The 64-bit one would generate
identical C++ source code.

If you are having problems linking your application to Xerces-C++,
then this could be due to several reasons:

1. Different width (32/64). You can try to pass -m64 or -m32 when
   building your application and see if that makes a difference.

2. Different C++ compilers and/or C++ runtimes used. This is actually
   a big mess at the moment in MacOS since there are two C++ runtimes
   (Clang's libc++ and GCC's libstdc++). So what very well could have
   happened is that Brew used GCC to build Xerces-C++ and linked it
   to libstdc++ while you are using Clang to build your application
   and linking to libc++. As you can probably guess, nothing good is
   going to come out of it.

As a result, what I would strongly recommend is that you scrap Brew
(i.e., uninstall Xerces-C++) and build everything yourself using
exactly the same compiler for everything (I would suggest the default
clang from the command line tools). Building Xerces-C++ should be a
simple matter of running:

./configure CC=clang CXX=clang++
make
sudo make install


> Also, I had to make a minor modification to the above document so 
> that it only referred to local schemas, I kept on getting 
> “FieldML_0.5.xsd: error: 'http://www.cellml.org/tools/cellml_1_1_
> schema/common/xlink-href.xsd': unable to open in read mode”.

See the --location-map option in the XSD command line manual.

Boris