/brz/remove-bazaar

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Viewing changes to setup.py

  • Committer: John Arbash Meinel
  • Date: 2008-10-02 16:35:05 UTC
  • mto: This revision was merged to the branch mainline in revision 3772.
  • Revision ID: john@arbash-meinel.com-20081002163505-sscy52tfqzz7ltg9
Default to requiring extensions.

The build process will fail if extensions cannot be compiled, unless
--allow-python-fallback is supplied.
This helps PQM to make sure extensions are tested, and helps
users by having them explicitly allow non-compiled forms.

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Lines of Context:
setup.py
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    """Customized build distutils action.
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    Generate bzr.1.
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    """
 
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    def run(self):
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        build.run(self)
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class build_ext_if_possible(build_ext):
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    user_options = build_ext.user_options + [
 
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        ('allow-python-fallback', None,
 
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         "When an extension cannot be built, allow falling"
 
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         " back to the pure-python implementation.")
 
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        ]
 
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    def initialize_options(self):
 
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        build_ext.initialize_options(self)
 
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        self.allow_python_fallback = False
 
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    def run(self):
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        try:
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            build_ext.run(self)
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        except DistutilsPlatformError, e:
 
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            if not self.allow_python_fallback:
 
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                log.warn('\n  Cannot build extensions.\n'
 
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                         '  Use --allow-python-fallback to use slower'
 
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                         ' python implementations instead.\n')
 
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                raise
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            log.warn(str(e))
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            log.warn('Extensions cannot be built, '
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                     'will use the Python versions instead')
 
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            log.warn('\n  Extensions cannot be built.\n'
 
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                     '  Using the slower Python implementations instead.\n')
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    def build_extension(self, ext):
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        try:
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            build_ext.build_extension(self, ext)
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        except CCompilerError:
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            log.warn('Building of "%s" extension failed, '
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                     'will use the Python version instead' % (ext.name,))
 
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            if not self.allow_python_fallback:
 
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                log.warn('\n  Failed to build "%s".\n'
 
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                         '  Use --allow-python-fallback to use slower'
 
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                         ' python implementations instead.\n'
 
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                         % (ext.name,))
 
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                raise
 
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            log.warn('\n  Building of "%s" extension failed.\n'
 
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                     '  Using the slower Python implementation instead.'
 
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                     % (ext.name,))
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# Override the build_ext if we have Pyrex available