'''Specialization of build_ext to enable swig_opts to inherit any

include_dirs settings made at the command line or in a setup.cfg file'''

user_options = build_ext.build_ext.user_options + \

[('openssl=', 'o', 'Prefix for openssl installation location')]

def initialize_options(self):

'''Overload to enable custom openssl settings to be picked up'''

build_ext.build_ext.initialize_options(self)

# openssl is the attribute corresponding to openssl directory prefix

# command line option

if os.name == 'nt':

self.libraries = ['ssleay32', 'libeay32']

self.openssl = 'c:\\pkg'

else:

self.libraries = ['ssl', 'crypto']

self.openssl = '/usr'

def finalize_options(self):

'''Overloaded build_ext implementation to append custom openssl

include file and library linking options'''

build_ext.build_ext.finalize_options(self)

opensslIncludeDir = os.path.join(self.openssl, 'include')

opensslLibraryDir = os.path.join(self.openssl, 'lib')

self.swig_opts = ['-I%s' % i for i in self.include_dirs + \

[opensslIncludeDir]]

self.swig_opts.append('-includeall')

#self.swig_opts.append('-D__i386__') # Uncomment for early OpenSSL 0.9.7 versions, or on Fedora Core if build fails

#self.swig_opts.append('-DOPENSSL_NO_EC') # Try uncommenting if you can't build with EC disabled

self.include_dirs += [os.path.join(self.openssl, opensslIncludeDir),

os.path.join(os.getcwd(), 'SWIG')]

if sys.platform == 'cygwin':

# Cygwin SHOULD work (there's code in distutils), but

# if one first starts a Windows command prompt, then bash,

# the distutils code does not seem to work. If you start

# Cygwin directly, then it would work even without this change.

# Someday distutils will be fixed and this won't be needed.

self.library_dirs += [os.path.join(self.openssl, 'bin')]

"""Walk the list of source files in 'sources', looking for SWIG

interface (.i) files. Run SWIG on all that are found, and

return a modified 'sources' list with SWIG source files replaced

by the generated C (or C++) files.

"""

new_sources = []

swig_sources = []

swig_targets = {}

# XXX this drops generated C/C++ files into the source tree, which

# is fine for developers who want to distribute the generated

# source -- but there should be an option to put SWIG output in

# the temp dir.

if self.swig_cpp:

target_ext = '.cpp'

else:

target_ext = '.c'

for source in sources:

(base, ext) = os.path.splitext(source)

if ext == ".i": # SWIG interface file

new_sources.append(base + target_ext)

swig_sources.append(source)

swig_targets[source] = new_sources[-1]

else:

new_sources.append(source)

if not swig_sources:

return new_sources

swig = self.find_swig()

swig_cmd = [swig, "-python", "-ISWIG"]

if self.swig_cpp:

swig_cmd.append("-c++")

swig_cmd += self.swig_opts

for source in swig_sources:

target = swig_targets[source]

self.announce("swigging %s to %s" % (source, target))

self.spawn(swig_cmd + ["-o", target, source])

sources = ['SWIG/_m2crypto.i'],

extra_compile_args = ['-DTHREADING'],

#extra_link_args = ['-Wl,-search_paths_first'], # Uncomment to build Universal Mac binaries