setup.py

Fix bdiff test failures on AIX.

The test fails when, in the call to calloc(), the number of elements (bn)
is 0. In that case, calloc() on AIX will return NULL, while the code expects
a valid heap pointer. Both results are permissible under C99, Unix98 etc.

Work around by ensuring that at least 1 element is requested.

#!/usr/bin/env python
#
# This is the mercurial setup script.
#
# 'python setup.py install', or
# 'python setup.py --help' for more options

import sys
if not hasattr(sys, 'version_info') or sys.version_info < (2, 3, 0, 'final'):
    raise SystemExit, "Mercurial requires python 2.3 or later."

import os
from distutils.core import setup, Extension
from distutils.command.install_data import install_data

import mercurial.version

extra = {}

# py2exe needs to be installed to work
try:
    import py2exe

    # Help py2exe to find win32com.shell
    try:
        import modulefinder
        import win32com
        for p in win32com.__path__[1:]: # Take the path to win32comext
            modulefinder.AddPackagePath("win32com", p)
        pn = "win32com.shell"
        __import__(pn)
        m = sys.modules[pn]
        for p in m.__path__[1:]:
            modulefinder.AddPackagePath(pn, p)
    except ImportError:
        pass

    extra['console'] = ['hg']

except ImportError:
    pass

# specify version string, otherwise 'hg identify' will be used:
version = ''

class install_package_data(install_data):
    def finalize_options(self):
        self.set_undefined_options('install',
                                   ('install_lib', 'install_dir'))
        install_data.finalize_options(self)

mercurial.version.remember_version(version)
cmdclass = {'install_data': install_package_data}

ext_modules=[
    Extension('mercurial.mpatch', ['mercurial/mpatch.c']),
    Extension('mercurial.bdiff', ['mercurial/bdiff.c']),
    Extension('mercurial.base85', ['mercurial/base85.c']),
    Extension('mercurial.diffhelpers', ['mercurial/diffhelpers.c'])
    ]

try:
    import posix
    ext_modules.append(Extension('mercurial.osutil', ['mercurial/osutil.c']))
except ImportError:
    pass

setup(name='mercurial',
      version=mercurial.version.get_version(),
      author='Matt Mackall',
      author_email='[e-mail]',
      url='http://selenic.com/mercurial',
      description='Scalable distributed SCM',
      license='GNU GPL',
      packages=['mercurial', 'mercurial.hgweb', 'hgext', 'hgext.convert'],
      ext_modules=ext_modules,
      data_files=[(os.path.join('mercurial', root),
                   [os.path.join(root, file_) for file_ in files])
                  for root, dirs, files in os.walk('templates')],
      cmdclass=cmdclass,
      scripts=['hg', 'hgmerge'],
      options=dict(py2exe=dict(packages=['hgext']),
                   bdist_mpkg=dict(zipdist=True,
                                   license='COPYING',
                                   readme='contrib/macosx/Readme.html',
                                   welcome='contrib/macosx/Welcome.html')),
      **extra)