1 files changed, 158 insertions, 0 deletions
diff --git a/build/get-py-info.py b/build/get-py-info.py
new file mode 100644
index 0000000..29a6c0a
--- /dev/null
+++ b/build/get-py-info.py
@@ -0,0 +1,158 @@
+#
+# get-py-info.py: get various Python info (for building)
+#
+######################################################################
+#    Licensed to the Apache Software Foundation (ASF) under one
+#    or more contributor license agreements.  See the NOTICE file
+#    distributed with this work for additional information
+#    regarding copyright ownership.  The ASF licenses this file
+#    to you under the Apache License, Version 2.0 (the
+#    "License"); you may not use this file except in compliance
+#    with the License.  You may obtain a copy of the License at
+#
+#      http://www.apache.org/licenses/LICENSE-2.0
+#
+#    Unless required by applicable law or agreed to in writing,
+#    software distributed under the License is distributed on an
+#    "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+#    KIND, either express or implied.  See the License for the
+#    specific language governing permissions and limitations
+#    under the License.
+######################################################################
+#
+# This should be loaded/run by the appropriate Python, rather than executed
+# directly as a program. In other words, you should:
+#
+#    $ python2 get-py-info.py --includes
+#
+
+import sys
+import os
+
+def usage():
+  print('USAGE: python %s WHAT' % sys.argv[0])
+  print('  Returns information about how to build Python extensions.')
+  print('  WHAT may be one of:')
+  print("    --includes : return -I include flags")
+  print("    --compile  : return a compile command")
+  print("    --link     : return a link command")
+  print("    --libs     : return just the library options for linking")
+  print("    --site     : return the path to site-packages")
+  sys.exit(1)
+
+if len(sys.argv) != 2:
+  usage()
+
+try:
+  from distutils import sysconfig
+except ImportError:
+  # No information available
+  print("none")
+  sys.exit(1)
+
+if sys.argv[1] == '--includes':
+  inc = sysconfig.get_python_inc()
+  plat = sysconfig.get_python_inc(plat_specific=1)
+  if inc == plat:
+    print("-I" + inc)
+  else:
+    print("-I%s -I%s" % (inc, plat))
+  sys.exit(0)
+
+if sys.argv[1] == '--compile':
+  cc, ccshared = sysconfig.get_config_vars('CC', 'CCSHARED')
+  print("%s %s" % (cc, ccshared))
+  sys.exit(0)
+
+def add_option(options, name, value=None):
+  """Add option to list of options"""
+  options.append(name)
+  if value is not None:
+    options.append(value)
+
+def add_option_if_missing(options, name, value=None):
+  """Add option to list of options, if it is not already present"""
+  if options.count(name) == 0 and options.count("-Wl,%s" % name) == 0:
+    add_option(options, name, value)
+
+def link_options():
+  """Get list of Python linker options"""
+
+  # Initialize config variables
+  assert os.name == "posix"
+  options = sysconfig.get_config_var('LDSHARED').split()
+  fwdir = sysconfig.get_config_var('PYTHONFRAMEWORKDIR')
+
+  if fwdir and fwdir != "no-framework":
+
+    # Setup the framework prefix
+    fwprefix = sysconfig.get_config_var('PYTHONFRAMEWORKPREFIX')
+    if fwprefix != "/System/Library/Frameworks":
+      add_option_if_missing(options, "-F%s" % fwprefix)
+
+    # Load in the framework
+    fw = sysconfig.get_config_var('PYTHONFRAMEWORK')
+    add_option(options, "-framework", fw)
+
+  elif sys.platform == 'darwin':
+
+    # Load bundles from python
+    python_exe = os.path.join(sysconfig.get_config_var("BINDIR"),
+      sysconfig.get_config_var('PYTHON'))
+    add_option_if_missing(options, "-bundle_loader", python_exe)
+
+  elif sys.platform == 'cygwin' or sys.platform.startswith('openbsd'):
+
+    # Add flags to build against the Python library (also necessary
+    # for Darwin, but handled elsewhere).
+
+    # Find the path to the library, and add a flag to include it as a
+    # library search path.
+    shared_libdir = sysconfig.get_config_var('LIBDIR')
+    static_libdir = sysconfig.get_config_var('LIBPL')
+    ldlibrary = sysconfig.get_config_var('LDLIBRARY')
+    if os.path.exists(os.path.join(shared_libdir, ldlibrary)):
+      if shared_libdir != '/usr/lib':
+        add_option_if_missing(options, '-L%s' % shared_libdir)
+    elif os.path.exists(os.path.join(static_libdir, ldlibrary)):
+      add_option_if_missing(options, "-L%s" % static_libdir)
+
+    # Add a flag to build against the library itself.
+    python_version = sysconfig.get_config_var('VERSION')
+    add_option_if_missing(options, "-lpython%s" % python_version)
+
+  return options
+
+def lib_options():
+  """Get list of Python library options"""
+  link_command = link_options()
+  options = []
+
+  # Extract library-related options from link command
+  for i in range(len(link_command)):
+    option = link_command[i]
+    if (not option.startswith("-L:") and option.startswith("-L") or
+        option.startswith("-Wl,") or option.startswith("-l") or
+        option.startswith("-F") or option == "-bundle" or
+        option == "-flat_namespace"):
+      options.append(option)
+    elif (option == "-undefined" or option == "-bundle_loader" or
+          option == "-framework"):
+      options.append(option)
+      options.append(link_command[i+1])
+
+  return options
+
+if sys.argv[1] == '--link':
+  print(" ".join(link_options()))
+  sys.exit(0)
+
+if sys.argv[1] == '--libs':
+  print(" ".join(lib_options()))
+  sys.exit(0)
+
+if sys.argv[1] == '--site':
+  print(sysconfig.get_python_lib())
+  sys.exit(0)
+
+usage()