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Our Makefile currently passes PYLIBFDT_objdir into setup.py in an attempt to set the correct place to put the Python extension module output. But that gets passed in the 'package_dir' map in distutils. But that's basically not what package_dir controls. What actually makes us find the module in the right place is the --inplace passed to setup.py (causing the module to go into the current directory), and the following 'mv' in the Makefile to move it into the right final location. We can simplify setup.py by dropping the useless objdir stuff, and get the module put in the right place straight way by instead using the --build-lib setup.py option. Signed-off-by: David Gibson <david@gibson.dropbear.id.au> Reviewed-by: Simon Glass <sjg@chromium.org>
112 lines
3.4 KiB
Python
Executable file
112 lines
3.4 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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Files to be built into the extension are provided in SOURCES
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C flags to use are provided in CPPFLAGS
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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 files to build
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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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makevars = ParseMakefile(os.path.join(basedir, 'libfdt', 'Makefile.libfdt'))
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files = makevars['LIBFDT_SRCS'].split()
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files = [os.path.join(basedir, 'libfdt', fname) for fname in files]
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files.append('pylibfdt/libfdt.i')
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cflags = ['-I%s/libfdt' % basedir]
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return version, files, cflags
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progname = sys.argv[0]
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files = os.environ.get('SOURCES', '').split()
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cflags = os.environ.get('CPPFLAGS', '').split()
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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 all((version, files, cflags)):
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version, files, cflags= GetEnvFromMakefiles()
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libfdt_module = Extension(
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'_libfdt',
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sources = files,
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extra_compile_args = cflags,
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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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