Make Python build standalone on Windows
diff --git a/src/python/grpcio/build.py b/src/python/grpcio/build.py
new file mode 100644
index 0000000..df5b54c
--- /dev/null
+++ b/src/python/grpcio/build.py
@@ -0,0 +1,117 @@
+# Copyright 2016, Google Inc.
+# All rights reserved.
+#
+# Redistribution and use in source and binary forms, with or without
+# modification, are permitted provided that the following conditions are
+# met:
+#
+# * Redistributions of source code must retain the above copyright
+# notice, this list of conditions and the following disclaimer.
+# * Redistributions in binary form must reproduce the above
+# copyright notice, this list of conditions and the following disclaimer
+# in the documentation and/or other materials provided with the
+# distribution.
+# * Neither the name of Google Inc. nor the names of its
+# contributors may be used to endorse or promote products derived from
+# this software without specific prior written permission.
+#
+# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+# A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+# OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+"""Covers inadequacies in distutils."""
+
+from distutils import ccompiler
+from distutils import errors
+from distutils import unixccompiler
+import os
+import os.path
+import shutil
+import sys
+import tempfile
+
+
+def _unix_piecemeal_link(
+ self, target_desc, objects, output_filename, output_dir=None,
+ libraries=None, library_dirs=None, runtime_library_dirs=None,
+ export_symbols=None, debug=0, extra_preargs=None, extra_postargs=None,
+ build_temp=None, target_lang=None):
+ """`link` externalized method taken almost verbatim from UnixCCompiler.
+
+ Modifies the link command for unix-like compilers by using a command file so
+ that long command line argument strings don't break the command shell's
+ ARG_MAX character limit.
+ """
+ objects, output_dir = self._fix_object_args(objects, output_dir)
+ libraries, library_dirs, runtime_library_dirs = self._fix_lib_args(
+ libraries, library_dirs, runtime_library_dirs)
+ # filter out standard library paths, which are not explicitely needed
+ # for linking
+ library_dirs = [dir for dir in library_dirs
+ if not dir in ('/lib', '/lib64', '/usr/lib', '/usr/lib64')]
+ runtime_library_dirs = [dir for dir in runtime_library_dirs
+ if not dir in ('/lib', '/lib64', '/usr/lib', '/usr/lib64')]
+ lib_opts = ccompiler.gen_lib_options(self, library_dirs, runtime_library_dirs,
+ libraries)
+ if not isinstance(output_dir, basestring) and output_dir is not None:
+ raise TypeError, "'output_dir' must be a string or None"
+ if output_dir is not None:
+ output_filename = os.path.join(output_dir, output_filename)
+
+ if self._need_link(objects, output_filename):
+ ld_args = (objects + self.objects +
+ lib_opts + ['-o', output_filename])
+ if debug:
+ ld_args[:0] = ['-g']
+ if extra_preargs:
+ ld_args[:0] = extra_preargs
+ if extra_postargs:
+ ld_args.extend(extra_postargs)
+ self.mkpath(os.path.dirname(output_filename))
+ try:
+ if target_desc == ccompiler.CCompiler.EXECUTABLE:
+ linker = self.linker_exe[:]
+ else:
+ linker = self.linker_so[:]
+ if target_lang == "c++" and self.compiler_cxx:
+ # skip over environment variable settings if /usr/bin/env
+ # is used to set up the linker's environment.
+ # This is needed on OSX. Note: this assumes that the
+ # normal and C++ compiler have the same environment
+ # settings.
+ i = 0
+ if os.path.basename(linker[0]) == "env":
+ i = 1
+ while '=' in linker[i]:
+ i = i + 1
+
+ linker[i] = self.compiler_cxx[i]
+
+ if sys.platform == 'darwin':
+ import _osx_support
+ linker = _osx_support.compiler_fixup(linker, ld_args)
+
+ temporary_directory = tempfile.mkdtemp()
+ command_filename = os.path.abspath(
+ os.path.join(temporary_directory, 'command'))
+ with open(command_filename, 'w') as command_file:
+ escaped_ld_args = [arg.replace('\\', '\\\\') for arg in ld_args]
+ command_file.write(' '.join(escaped_ld_args))
+ self.spawn(linker + ['@{}'.format(command_filename)])
+ except errors.DistutilsExecError, msg:
+ raise ccompiler.LinkError, msg
+ else:
+ log.debug("skipping %s (up-to-date)", output_filename)
+
+def monkeypatch_unix_compiler():
+ """Monkeypatching is dumb, but it's either that or we become maintainers of
+ something much, much bigger."""
+ unixccompiler.UnixCCompiler.link = _unix_piecemeal_link