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annotate venv/lib/python2.7/site-packages/setuptools/command/build_ext.py @ 0:d67268158946 draft

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planemo upload commit a3f181f5f126803c654b3a66dd4e83a48f7e203b
author bcclaywell
date Mon, 12 Oct 2015 17:43:33 -0400
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1 from distutils.command.build_ext import build_ext as _du_build_ext
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2 from distutils.file_util import copy_file
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3 from distutils.ccompiler import new_compiler
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4 from distutils.sysconfig import customize_compiler
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5 from distutils.errors import DistutilsError
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6 from distutils import log
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7 import os
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8 import sys
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9 import itertools
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10
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11 from setuptools.extension import Library
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12
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13 try:
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14 # Attempt to use Pyrex for building extensions, if available
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15 from Pyrex.Distutils.build_ext import build_ext as _build_ext
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16 except ImportError:
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17 _build_ext = _du_build_ext
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18
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19 try:
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20 # Python 2.7 or >=3.2
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21 from sysconfig import _CONFIG_VARS
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22 except ImportError:
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23 from distutils.sysconfig import get_config_var
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24
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25 get_config_var("LDSHARED") # make sure _config_vars is initialized
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26 del get_config_var
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27 from distutils.sysconfig import _config_vars as _CONFIG_VARS
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28
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29 have_rtld = False
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30 use_stubs = False
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31 libtype = 'shared'
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32
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33 if sys.platform == "darwin":
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34 use_stubs = True
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35 elif os.name != 'nt':
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36 try:
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37 import dl
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38 use_stubs = have_rtld = hasattr(dl, 'RTLD_NOW')
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39 except ImportError:
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40 pass
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41
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42
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43 if_dl = lambda s: s if have_rtld else ''
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44
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45
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46 class build_ext(_build_ext):
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47 def run(self):
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48 """Build extensions in build directory, then copy if --inplace"""
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49 old_inplace, self.inplace = self.inplace, 0
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50 _build_ext.run(self)
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51 self.inplace = old_inplace
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52 if old_inplace:
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53 self.copy_extensions_to_source()
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54
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55 def copy_extensions_to_source(self):
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56 build_py = self.get_finalized_command('build_py')
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57 for ext in self.extensions:
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58 fullname = self.get_ext_fullname(ext.name)
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59 filename = self.get_ext_filename(fullname)
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60 modpath = fullname.split('.')
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61 package = '.'.join(modpath[:-1])
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62 package_dir = build_py.get_package_dir(package)
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63 dest_filename = os.path.join(package_dir,
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64 os.path.basename(filename))
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65 src_filename = os.path.join(self.build_lib, filename)
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66
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67 # Always copy, even if source is older than destination, to ensure
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68 # that the right extensions for the current Python/platform are
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69 # used.
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70 copy_file(
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71 src_filename, dest_filename, verbose=self.verbose,
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72 dry_run=self.dry_run
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73 )
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74 if ext._needs_stub:
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75 self.write_stub(package_dir or os.curdir, ext, True)
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76
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77 if _build_ext is not _du_build_ext and not hasattr(_build_ext,
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78 'pyrex_sources'):
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79 # Workaround for problems using some Pyrex versions w/SWIG and/or 2.4
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80 def swig_sources(self, sources, *otherargs):
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81 # first do any Pyrex processing
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82 sources = _build_ext.swig_sources(self, sources) or sources
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83 # Then do any actual SWIG stuff on the remainder
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84 return _du_build_ext.swig_sources(self, sources, *otherargs)
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85
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86 def get_ext_filename(self, fullname):
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87 filename = _build_ext.get_ext_filename(self, fullname)
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88 if fullname in self.ext_map:
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89 ext = self.ext_map[fullname]
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90 if isinstance(ext, Library):
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91 fn, ext = os.path.splitext(filename)
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92 return self.shlib_compiler.library_filename(fn, libtype)
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93 elif use_stubs and ext._links_to_dynamic:
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94 d, fn = os.path.split(filename)
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95 return os.path.join(d, 'dl-' + fn)
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96 return filename
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97
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98 def initialize_options(self):
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99 _build_ext.initialize_options(self)
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100 self.shlib_compiler = None
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101 self.shlibs = []
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102 self.ext_map = {}
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103
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104 def finalize_options(self):
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105 _build_ext.finalize_options(self)
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106 self.extensions = self.extensions or []
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107 self.check_extensions_list(self.extensions)
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108 self.shlibs = [ext for ext in self.extensions
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109 if isinstance(ext, Library)]
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110 if self.shlibs:
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111 self.setup_shlib_compiler()
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112 for ext in self.extensions:
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113 ext._full_name = self.get_ext_fullname(ext.name)
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114 for ext in self.extensions:
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115 fullname = ext._full_name
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116 self.ext_map[fullname] = ext
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117
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118 # distutils 3.1 will also ask for module names
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119 # XXX what to do with conflicts?
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120 self.ext_map[fullname.split('.')[-1]] = ext
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121
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122 ltd = self.shlibs and self.links_to_dynamic(ext) or False
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123 ns = ltd and use_stubs and not isinstance(ext, Library)
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124 ext._links_to_dynamic = ltd
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125 ext._needs_stub = ns
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126 filename = ext._file_name = self.get_ext_filename(fullname)
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127 libdir = os.path.dirname(os.path.join(self.build_lib, filename))
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128 if ltd and libdir not in ext.library_dirs:
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129 ext.library_dirs.append(libdir)
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130 if ltd and use_stubs and os.curdir not in ext.runtime_library_dirs:
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131 ext.runtime_library_dirs.append(os.curdir)
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132
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133 def setup_shlib_compiler(self):
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134 compiler = self.shlib_compiler = new_compiler(
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135 compiler=self.compiler, dry_run=self.dry_run, force=self.force
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136 )
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137 if sys.platform == "darwin":
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138 tmp = _CONFIG_VARS.copy()
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139 try:
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140 # XXX Help! I don't have any idea whether these are right...
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141 _CONFIG_VARS['LDSHARED'] = (
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142 "gcc -Wl,-x -dynamiclib -undefined dynamic_lookup")
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143 _CONFIG_VARS['CCSHARED'] = " -dynamiclib"
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144 _CONFIG_VARS['SO'] = ".dylib"
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145 customize_compiler(compiler)
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146 finally:
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147 _CONFIG_VARS.clear()
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148 _CONFIG_VARS.update(tmp)
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149 else:
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150 customize_compiler(compiler)
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151
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152 if self.include_dirs is not None:
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153 compiler.set_include_dirs(self.include_dirs)
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154 if self.define is not None:
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155 # 'define' option is a list of (name,value) tuples
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156 for (name, value) in self.define:
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157 compiler.define_macro(name, value)
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158 if self.undef is not None:
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159 for macro in self.undef:
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160 compiler.undefine_macro(macro)
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161 if self.libraries is not None:
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162 compiler.set_libraries(self.libraries)
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163 if self.library_dirs is not None:
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164 compiler.set_library_dirs(self.library_dirs)
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165 if self.rpath is not None:
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166 compiler.set_runtime_library_dirs(self.rpath)
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167 if self.link_objects is not None:
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168 compiler.set_link_objects(self.link_objects)
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169
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170 # hack so distutils' build_extension() builds a library instead
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171 compiler.link_shared_object = link_shared_object.__get__(compiler)
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172
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173 def get_export_symbols(self, ext):
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174 if isinstance(ext, Library):
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175 return ext.export_symbols
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176 return _build_ext.get_export_symbols(self, ext)
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177
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178 def build_extension(self, ext):
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179 _compiler = self.compiler
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180 try:
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181 if isinstance(ext, Library):
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182 self.compiler = self.shlib_compiler
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183 _build_ext.build_extension(self, ext)
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184 if ext._needs_stub:
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185 cmd = self.get_finalized_command('build_py').build_lib
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186 self.write_stub(cmd, ext)
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187 finally:
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188 self.compiler = _compiler
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189
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190 def links_to_dynamic(self, ext):
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191 """Return true if 'ext' links to a dynamic lib in the same package"""
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192 # XXX this should check to ensure the lib is actually being built
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193 # XXX as dynamic, and not just using a locally-found version or a
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194 # XXX static-compiled version
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195 libnames = dict.fromkeys([lib._full_name for lib in self.shlibs])
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196 pkg = '.'.join(ext._full_name.split('.')[:-1] + [''])
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197 return any(pkg + libname in libnames for libname in ext.libraries)
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198
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199 def get_outputs(self):
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200 return _build_ext.get_outputs(self) + self.__get_stubs_outputs()
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201
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202 def __get_stubs_outputs(self):
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203 # assemble the base name for each extension that needs a stub
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204 ns_ext_bases = (
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205 os.path.join(self.build_lib, *ext._full_name.split('.'))
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206 for ext in self.extensions
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207 if ext._needs_stub
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208 )
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209 # pair each base with the extension
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210 pairs = itertools.product(ns_ext_bases, self.__get_output_extensions())
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211 return list(base + fnext for base, fnext in pairs)
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212
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213 def __get_output_extensions(self):
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214 yield '.py'
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215 yield '.pyc'
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216 if self.get_finalized_command('build_py').optimize:
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217 yield '.pyo'
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218
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219 def write_stub(self, output_dir, ext, compile=False):
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220 log.info("writing stub loader for %s to %s", ext._full_name,
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221 output_dir)
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222 stub_file = (os.path.join(output_dir, *ext._full_name.split('.')) +
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223 '.py')
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224 if compile and os.path.exists(stub_file):
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225 raise DistutilsError(stub_file + " already exists! Please delete.")
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226 if not self.dry_run:
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227 f = open(stub_file, 'w')
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228 f.write(
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229 '\n'.join([
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230 "def __bootstrap__():",
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231 " global __bootstrap__, __file__, __loader__",
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232 " import sys, os, pkg_resources, imp" + if_dl(", dl"),
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233 " __file__ = pkg_resources.resource_filename"
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234 "(__name__,%r)"
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235 % os.path.basename(ext._file_name),
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236 " del __bootstrap__",
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237 " if '__loader__' in globals():",
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238 " del __loader__",
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239 if_dl(" old_flags = sys.getdlopenflags()"),
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240 " old_dir = os.getcwd()",
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241 " try:",
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242 " os.chdir(os.path.dirname(__file__))",
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243 if_dl(" sys.setdlopenflags(dl.RTLD_NOW)"),
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244 " imp.load_dynamic(__name__,__file__)",
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245 " finally:",
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246 if_dl(" sys.setdlopenflags(old_flags)"),
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247 " os.chdir(old_dir)",
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248 "__bootstrap__()",
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249 "" # terminal \n
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250 ])
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251 )
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252 f.close()
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253 if compile:
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254 from distutils.util import byte_compile
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255
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256 byte_compile([stub_file], optimize=0,
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257 force=True, dry_run=self.dry_run)
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258 optimize = self.get_finalized_command('install_lib').optimize
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259 if optimize > 0:
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260 byte_compile([stub_file], optimize=optimize,
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261 force=True, dry_run=self.dry_run)
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262 if os.path.exists(stub_file) and not self.dry_run:
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263 os.unlink(stub_file)
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264
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265
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266 if use_stubs or os.name == 'nt':
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267 # Build shared libraries
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268 #
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269 def link_shared_object(
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270 self, objects, output_libname, output_dir=None, libraries=None,
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271 library_dirs=None, runtime_library_dirs=None, export_symbols=None,
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272 debug=0, extra_preargs=None, extra_postargs=None, build_temp=None,
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273 target_lang=None):
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274 self.link(
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275 self.SHARED_LIBRARY, objects, output_libname,
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276 output_dir, libraries, library_dirs, runtime_library_dirs,
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277 export_symbols, debug, extra_preargs, extra_postargs,
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278 build_temp, target_lang
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279 )
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280 else:
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281 # Build static libraries everywhere else
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282 libtype = 'static'
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283
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284 def link_shared_object(
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285 self, objects, output_libname, output_dir=None, libraries=None,
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286 library_dirs=None, runtime_library_dirs=None, export_symbols=None,
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287 debug=0, extra_preargs=None, extra_postargs=None, build_temp=None,
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288 target_lang=None):
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289 # XXX we need to either disallow these attrs on Library instances,
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290 # or warn/abort here if set, or something...
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291 # libraries=None, library_dirs=None, runtime_library_dirs=None,
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292 # export_symbols=None, extra_preargs=None, extra_postargs=None,
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293 # build_temp=None
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294
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295 assert output_dir is None # distutils build_ext doesn't pass this
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296 output_dir, filename = os.path.split(output_libname)
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297 basename, ext = os.path.splitext(filename)
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298 if self.library_filename("x").startswith('lib'):
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299 # strip 'lib' prefix; this is kludgy if some platform uses
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300 # a different prefix
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301 basename = basename[3:]
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302
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303 self.create_static_lib(
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304 objects, basename, output_dir, debug, target_lang
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305 )