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At the moment we have some fiddly code to either pass in make's CPPFLAGS to setup.py, or have setup.py extract them from the Makefile. But really the only thing we need from here is the include paths. We already know what include paths we need (libfdt/) so we can just set that directly in setup.py. Signed-off-by: David Gibson <david@gibson.dropbear.id.au> Reviewed-by: Simon Glass <sjg@chromium.org>
104 lines
2.9 KiB
Python
Executable file
104 lines
2.9 KiB
Python
Executable file
#!/usr/bin/env python2
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"""
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setup.py file for SWIG libfdt
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Copyright (C) 2017 Google, Inc.
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Written by Simon Glass <sjg@chromium.org>
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Version is provided in VERSION
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If these variables are not given they are parsed from the Makefiles. This
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allows this script to be run stand-alone, e.g.:
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./pylibfdt/setup.py install [--prefix=...]
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"""
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from distutils.core import setup, Extension
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import os
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import re
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import sys
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# Decodes a Makefile assignment line into key and value (and plus for +=)
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RE_KEY_VALUE = re.compile('(?P<key>\w+) *(?P<plus>[+])?= *(?P<value>.*)$')
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def ParseMakefile(fname):
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"""Parse a Makefile to obtain its variables.
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This collects variable assigments of the form:
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VAR = value
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VAR += more
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It does not pick out := assignments, as these are not needed here. It does
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handle line continuation.
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Returns a dict:
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key: Variable name (e.g. 'VAR')
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value: Variable value (e.g. 'value more')
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"""
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makevars = {}
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with open(fname) as fd:
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prev_text = '' # Continuation text from previous line(s)
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for line in fd.read().splitlines():
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if line and line[-1] == '\\': # Deal with line continuation
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prev_text += line[:-1]
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continue
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elif prev_text:
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line = prev_text + line
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prev_text = '' # Continuation is now used up
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m = RE_KEY_VALUE.match(line)
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if m:
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value = m.group('value') or ''
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key = m.group('key')
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# Appending to a variable inserts a space beforehand
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if 'plus' in m.groupdict() and key in makevars:
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makevars[key] += ' ' + value
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else:
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makevars[key] = value
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return makevars
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def GetEnvFromMakefiles():
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"""Scan the Makefiles to obtain the settings we need.
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This assumes that this script is being run from the top-level directory,
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not the pylibfdt directory.
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Returns:
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Tuple with:
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Version string
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List of extra C preprocessor flags needed
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"""
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basedir = os.path.dirname(os.path.dirname(os.path.abspath(sys.argv[0])))
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makevars = ParseMakefile(os.path.join(basedir, 'Makefile'))
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version = '%s.%s.%s' % (makevars['VERSION'], makevars['PATCHLEVEL'],
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makevars['SUBLEVEL'])
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return version
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progname = sys.argv[0]
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version = os.environ.get('VERSION')
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# If we were called directly rather than through our Makefile (which is often
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# the case with Python module installation), read the settings from the
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# Makefile.
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if not version:
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version = GetEnvFromMakefiles()
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libfdt_module = Extension(
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'_libfdt',
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sources = ['pylibfdt/libfdt.i'],
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include_dirs = ['libfdt'],
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libraries = ['fdt'],
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library_dirs = ['libfdt'],
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)
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setup(
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name='libfdt',
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version= version,
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author='Simon Glass <sjg@chromium.org>',
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description='Python binding for libfdt',
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ext_modules=[libfdt_module],
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py_modules=['pylibfdt/libfdt'],
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)
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