pylibfdt: move pylibfdt to scripts/dtc/pylibfdt and refactor makefile

The pylibfdt is used by dtoc (and, indirectly by binman), but there
is no reason why it must be generated in the tools/ directory.

Recently, U-Boot switched over to the bundled DTC, and the directory
structure under scripts/dtc/ now mirrors the upstream DTC project.
So, scripts/dtc/pylibfdt is the best location.

I also rewrote the Makefile in a cleaner Kbuild style.

The scripts from the upstream have been moved as follows:

  lib/libfdt/pylibfdt/setup.py -> scripts/dtc/pylibfdt/setup.py
  lib/libfdt/pylibfdt/libfdt.i -> scripts/dtc/pylibfdt/libfdt.i_shipped

The .i_shipped is coped to .i during building because the .i must be
located in the objtree when we build it out of tree.

Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>

1 files changed, 0 insertions, 123 deletions

diff --git a/lib/libfdt/pylibfdt/setup.py b/lib/libfdt/pylibfdt/setup.py
deleted file mode 100755
index daf1089425d..00000000000
--- a/lib/libfdt/pylibfdt/setup.py
+++ /dev/null
@@ -1,123 +0,0 @@
-#!/usr/bin/env python
-
-"""
-setup.py file for SWIG libfdt
-Copyright (C) 2017 Google, Inc.
-Written by Simon Glass <sjg@chromium.org>
-
-SPDX-License-Identifier:	GPL-2.0+ BSD-2-Clause
-
-Files to be built into the extension are provided in SOURCES
-C flags to use are provided in CPPFLAGS
-Object file directory is provided in OBJDIR
-Version is provided in VERSION
-
-If these variables are not given they are parsed from the Makefiles. This
-allows this script to be run stand-alone, e.g.:
-
-    ./pylibfdt/setup.py install [--prefix=...]
-"""
-
-from distutils.core import setup, Extension
-import os
-import re
-import sys
-
-# Decodes a Makefile assignment line into key and value (and plus for +=)
-RE_KEY_VALUE = re.compile('(?P<key>\w+) *(?P<plus>[+])?= *(?P<value>.*)$')
-
-
-def ParseMakefile(fname):
-    """Parse a Makefile to obtain its variables.
-
-    This collects variable assigments of the form:
-
-        VAR = value
-        VAR += more
-
-    It does not pick out := assignments, as these are not needed here. It does
-    handle line continuation.
-
-    Returns a dict:
-        key: Variable name (e.g. 'VAR')
-        value: Variable value (e.g. 'value more')
-    """
-    makevars = {}
-    with open(fname) as fd:
-        prev_text = ''  # Continuation text from previous line(s)
-        for line in fd.read().splitlines():
-          if line and line[-1] == '\\':  # Deal with line continuation
-            prev_text += line[:-1]
-            continue
-          elif prev_text:
-            line = prev_text + line
-            prev_text = ''  # Continuation is now used up
-          m = RE_KEY_VALUE.match(line)
-          if m:
-            value = m.group('value') or ''
-            key = m.group('key')
-
-            # Appending to a variable inserts a space beforehand
-            if 'plus' in m.groupdict() and key in makevars:
-              makevars[key] += ' ' + value
-            else:
-              makevars[key] = value
-    return makevars
-
-def GetEnvFromMakefiles():
-    """Scan the Makefiles to obtain the settings we need.
-
-    This assumes that this script is being run from the top-level directory,
-    not the pylibfdt directory.
-
-    Returns:
-        Tuple with:
-            List of swig options
-            Version string
-            List of files to build
-            List of extra C preprocessor flags needed
-            Object directory to use (always '')
-    """
-    basedir = os.path.dirname(os.path.dirname(os.path.abspath(sys.argv[0])))
-    swig_opts = ['-I%s' % basedir]
-    makevars = ParseMakefile(os.path.join(basedir, 'Makefile'))
-    version = '%s.%s.%s' % (makevars['VERSION'], makevars['PATCHLEVEL'],
-                            makevars['SUBLEVEL'])
-    makevars = ParseMakefile(os.path.join(basedir, 'libfdt', 'Makefile.libfdt'))
-    files = makevars['LIBFDT_SRCS'].split()
-    files = [os.path.join(basedir, 'libfdt', fname) for fname in files]
-    files.append('pylibfdt/libfdt.i')
-    cflags = ['-I%s' % basedir, '-I%s/libfdt' % basedir]
-    objdir = ''
-    return swig_opts, version, files, cflags, objdir
-
-
-progname = sys.argv[0]
-files = os.environ.get('SOURCES', '').split()
-cflags = os.environ.get('CPPFLAGS', '').split()
-objdir = os.environ.get('OBJDIR')
-version = os.environ.get('VERSION')
-swig_opts = os.environ.get('SWIG_OPTS', '').split()
-
-# If we were called directly rather than through our Makefile (which is often
-# the case with Python module installation), read the settings from the
-# Makefile.
-if not all((swig_opts, version, files, cflags, objdir)):
-    swig_opts, version, files, cflags, objdir = GetEnvFromMakefiles()
-
-libfdt_module = Extension(
-    '_libfdt',
-    sources = files,
-    extra_compile_args = cflags,
-    swig_opts = swig_opts,
-)
-
-setup(
-    name='libfdt',
-    version= version,
-    author='Simon Glass <sjg@chromium.org>',
-    description='Python binding for libfdt',
-    ext_modules=[libfdt_module],
-    package_dir={'': objdir},
-    py_modules=['pylibfdt/libfdt'],
-)