On 25 May, 2010, at 18:20, jens.tho...@stfc.ac.uk wrote: > Hi, > > I'm trying to package up an app under OSX 10.6 (MacBook with Intel Duo) with > py2app. The application uses the external modules: vtk, numpy, Pmw. > > When I try to package it up, I get the following error: > > ...lots of output... > Copying > /Library/Python/2.6/site-packages/numpy-1.4.1-py2.6-macosx-10.6-universal.egg/numpy/version.pyc > -> > /Users/jmht/Documents/ccp1gui/dist/ccp1gui.app/Contents/Resources/lib/python2.6/numpy > creating > /Users/jmht/Documents/ccp1gui/dist/ccp1gui.app/Contents/Resources/lib/python2.6/lib-dynload/vtk > Traceback (most recent call last): > File > "/Library/Python/2.6/site-packages/py2app-0.4.3-py2.6.egg/py2app/build_app.py", > line 589, in _run > self.run_normal() > File > "/Library/Python/2.6/site-packages/py2app-0.4.3-py2.6.egg/py2app/build_app.py", > line 660, in run_normal > self.create_binaries(py_files, pkgdirs, extensions, loader_files) > File > "/Library/Python/2.6/site-packages/py2app-0.4.3-py2.6.egg/py2app/build_app.py", > line 777, in create_binaries > platfiles = mm.run() > File "build/bdist.macosx-10.6-universal/egg/macholib/MachOStandalone.py", > line 101, in run > for fn in platfiles: > File "build/bdist.macosx-10.6-universal/egg/macholib/util.py", line 227, in > iter_platform_files > if is_platform_file(fn): > File "build/bdist.macosx-10.6-universal/egg/macholib/util.py", line 206, in > is_platform_file > header = mach_o.fat_header.from_fileobj(fileobj, _endian_='>') > File "build/bdist.macosx-10.6-universal/egg/macholib/ptypes.py", line 44, in > from_fileobj > return cls.from_str(f.read(cls._size_), **kw) > File "build/bdist.macosx-10.6-universal/egg/macholib/ptypes.py", line 48, in > from_str > return cls.from_tuple(struct.unpack(endian + cls._format_, s), **kw) > error: unpack requires a string argument of length 8 > > > As py2app kindly fires up the debugger, I was able to look through the stack > and see that: > > endian + cls._format_ is '>LL' (i.e. big-endian with two unsigned longs) > > the string s that was read in from the file is: > > '\xca\xfe\xba\xbe\x00\x00\x00\x02\x00\x00\x00\x07\x00\x00\x00\x03' > > which is of length 16, and cls._size_ is 16. > > Everything points to 16 being the correct length, but the call to > struct.unpack is expecting something of length 8.
You seem to be running a 64-bit versions of python. There are some issues w.r.t. running py2app on 64-bit executables and you seem to run into one of them. IIRC '>L' is always a 32-bit entity in the struct module, while the code expects it to be a 64-bit entity (for 64-bit binaries). Patching that should be fairly easy, but I don't have time to do that right now. Ronald
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