Mercurial > repos > shellac > sam_consensus_v3
annotate env/lib/python3.9/site-packages/setuptools/_distutils/extension.py @ 0:4f3585e2f14b draft default tip
"planemo upload commit 60cee0fc7c0cda8592644e1aad72851dec82c959"
author | shellac |
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date | Mon, 22 Mar 2021 18:12:50 +0000 |
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1 """distutils.extension |
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2 |
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3 Provides the Extension class, used to describe C/C++ extension |
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4 modules in setup scripts.""" |
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5 |
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6 import os |
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7 import warnings |
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8 |
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9 # This class is really only used by the "build_ext" command, so it might |
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10 # make sense to put it in distutils.command.build_ext. However, that |
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11 # module is already big enough, and I want to make this class a bit more |
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12 # complex to simplify some common cases ("foo" module in "foo.c") and do |
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13 # better error-checking ("foo.c" actually exists). |
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14 # |
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15 # Also, putting this in build_ext.py means every setup script would have to |
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16 # import that large-ish module (indirectly, through distutils.core) in |
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17 # order to do anything. |
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18 |
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19 class Extension: |
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20 """Just a collection of attributes that describes an extension |
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21 module and everything needed to build it (hopefully in a portable |
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22 way, but there are hooks that let you be as unportable as you need). |
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23 |
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24 Instance attributes: |
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25 name : string |
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26 the full name of the extension, including any packages -- ie. |
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27 *not* a filename or pathname, but Python dotted name |
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28 sources : [string] |
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29 list of source filenames, relative to the distribution root |
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30 (where the setup script lives), in Unix form (slash-separated) |
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31 for portability. Source files may be C, C++, SWIG (.i), |
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32 platform-specific resource files, or whatever else is recognized |
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33 by the "build_ext" command as source for a Python extension. |
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34 include_dirs : [string] |
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35 list of directories to search for C/C++ header files (in Unix |
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36 form for portability) |
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37 define_macros : [(name : string, value : string|None)] |
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38 list of macros to define; each macro is defined using a 2-tuple, |
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39 where 'value' is either the string to define it to or None to |
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40 define it without a particular value (equivalent of "#define |
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41 FOO" in source or -DFOO on Unix C compiler command line) |
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42 undef_macros : [string] |
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43 list of macros to undefine explicitly |
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44 library_dirs : [string] |
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45 list of directories to search for C/C++ libraries at link time |
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46 libraries : [string] |
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47 list of library names (not filenames or paths) to link against |
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48 runtime_library_dirs : [string] |
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49 list of directories to search for C/C++ libraries at run time |
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50 (for shared extensions, this is when the extension is loaded) |
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51 extra_objects : [string] |
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52 list of extra files to link with (eg. object files not implied |
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53 by 'sources', static library that must be explicitly specified, |
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54 binary resource files, etc.) |
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55 extra_compile_args : [string] |
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56 any extra platform- and compiler-specific information to use |
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57 when compiling the source files in 'sources'. For platforms and |
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58 compilers where "command line" makes sense, this is typically a |
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59 list of command-line arguments, but for other platforms it could |
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60 be anything. |
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61 extra_link_args : [string] |
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62 any extra platform- and compiler-specific information to use |
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63 when linking object files together to create the extension (or |
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64 to create a new static Python interpreter). Similar |
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65 interpretation as for 'extra_compile_args'. |
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66 export_symbols : [string] |
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67 list of symbols to be exported from a shared extension. Not |
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68 used on all platforms, and not generally necessary for Python |
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69 extensions, which typically export exactly one symbol: "init" + |
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70 extension_name. |
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71 swig_opts : [string] |
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72 any extra options to pass to SWIG if a source file has the .i |
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73 extension. |
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74 depends : [string] |
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75 list of files that the extension depends on |
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76 language : string |
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77 extension language (i.e. "c", "c++", "objc"). Will be detected |
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78 from the source extensions if not provided. |
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79 optional : boolean |
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80 specifies that a build failure in the extension should not abort the |
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81 build process, but simply not install the failing extension. |
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82 """ |
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83 |
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84 # When adding arguments to this constructor, be sure to update |
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85 # setup_keywords in core.py. |
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86 def __init__(self, name, sources, |
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87 include_dirs=None, |
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88 define_macros=None, |
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89 undef_macros=None, |
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90 library_dirs=None, |
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91 libraries=None, |
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92 runtime_library_dirs=None, |
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93 extra_objects=None, |
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94 extra_compile_args=None, |
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95 extra_link_args=None, |
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96 export_symbols=None, |
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97 swig_opts = None, |
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98 depends=None, |
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99 language=None, |
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100 optional=None, |
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101 **kw # To catch unknown keywords |
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102 ): |
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103 if not isinstance(name, str): |
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104 raise AssertionError("'name' must be a string") |
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105 if not (isinstance(sources, list) and |
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106 all(isinstance(v, str) for v in sources)): |
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107 raise AssertionError("'sources' must be a list of strings") |
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108 |
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109 self.name = name |
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110 self.sources = sources |
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111 self.include_dirs = include_dirs or [] |
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112 self.define_macros = define_macros or [] |
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113 self.undef_macros = undef_macros or [] |
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114 self.library_dirs = library_dirs or [] |
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115 self.libraries = libraries or [] |
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116 self.runtime_library_dirs = runtime_library_dirs or [] |
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117 self.extra_objects = extra_objects or [] |
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118 self.extra_compile_args = extra_compile_args or [] |
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119 self.extra_link_args = extra_link_args or [] |
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120 self.export_symbols = export_symbols or [] |
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121 self.swig_opts = swig_opts or [] |
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122 self.depends = depends or [] |
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123 self.language = language |
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124 self.optional = optional |
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125 |
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126 # If there are unknown keyword options, warn about them |
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127 if len(kw) > 0: |
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128 options = [repr(option) for option in kw] |
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129 options = ', '.join(sorted(options)) |
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130 msg = "Unknown Extension options: %s" % options |
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131 warnings.warn(msg) |
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132 |
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133 def __repr__(self): |
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134 return '<%s.%s(%r) at %#x>' % ( |
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135 self.__class__.__module__, |
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136 self.__class__.__qualname__, |
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137 self.name, |
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138 id(self)) |
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139 |
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140 |
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141 def read_setup_file(filename): |
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142 """Reads a Setup file and returns Extension instances.""" |
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143 from distutils.sysconfig import (parse_makefile, expand_makefile_vars, |
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144 _variable_rx) |
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145 |
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146 from distutils.text_file import TextFile |
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147 from distutils.util import split_quoted |
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148 |
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149 # First pass over the file to gather "VAR = VALUE" assignments. |
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150 vars = parse_makefile(filename) |
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151 |
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152 # Second pass to gobble up the real content: lines of the form |
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153 # <module> ... [<sourcefile> ...] [<cpparg> ...] [<library> ...] |
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154 file = TextFile(filename, |
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155 strip_comments=1, skip_blanks=1, join_lines=1, |
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156 lstrip_ws=1, rstrip_ws=1) |
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157 try: |
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158 extensions = [] |
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159 |
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160 while True: |
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161 line = file.readline() |
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162 if line is None: # eof |
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163 break |
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164 if _variable_rx.match(line): # VAR=VALUE, handled in first pass |
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165 continue |
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166 |
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167 if line[0] == line[-1] == "*": |
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168 file.warn("'%s' lines not handled yet" % line) |
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169 continue |
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170 |
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171 line = expand_makefile_vars(line, vars) |
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172 words = split_quoted(line) |
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173 |
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174 # NB. this parses a slightly different syntax than the old |
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175 # makesetup script: here, there must be exactly one extension per |
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176 # line, and it must be the first word of the line. I have no idea |
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177 # why the old syntax supported multiple extensions per line, as |
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178 # they all wind up being the same. |
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179 |
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180 module = words[0] |
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181 ext = Extension(module, []) |
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182 append_next_word = None |
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183 |
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184 for word in words[1:]: |
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185 if append_next_word is not None: |
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186 append_next_word.append(word) |
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187 append_next_word = None |
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188 continue |
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189 |
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190 suffix = os.path.splitext(word)[1] |
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191 switch = word[0:2] ; value = word[2:] |
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192 |
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193 if suffix in (".c", ".cc", ".cpp", ".cxx", ".c++", ".m", ".mm"): |
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194 # hmm, should we do something about C vs. C++ sources? |
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195 # or leave it up to the CCompiler implementation to |
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196 # worry about? |
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197 ext.sources.append(word) |
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198 elif switch == "-I": |
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199 ext.include_dirs.append(value) |
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200 elif switch == "-D": |
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201 equals = value.find("=") |
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202 if equals == -1: # bare "-DFOO" -- no value |
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203 ext.define_macros.append((value, None)) |
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204 else: # "-DFOO=blah" |
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205 ext.define_macros.append((value[0:equals], |
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206 value[equals+2:])) |
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207 elif switch == "-U": |
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208 ext.undef_macros.append(value) |
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209 elif switch == "-C": # only here 'cause makesetup has it! |
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210 ext.extra_compile_args.append(word) |
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211 elif switch == "-l": |
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212 ext.libraries.append(value) |
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213 elif switch == "-L": |
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214 ext.library_dirs.append(value) |
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215 elif switch == "-R": |
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216 ext.runtime_library_dirs.append(value) |
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217 elif word == "-rpath": |
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218 append_next_word = ext.runtime_library_dirs |
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219 elif word == "-Xlinker": |
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220 append_next_word = ext.extra_link_args |
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221 elif word == "-Xcompiler": |
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222 append_next_word = ext.extra_compile_args |
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223 elif switch == "-u": |
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224 ext.extra_link_args.append(word) |
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225 if not value: |
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226 append_next_word = ext.extra_link_args |
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227 elif suffix in (".a", ".so", ".sl", ".o", ".dylib"): |
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228 # NB. a really faithful emulation of makesetup would |
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229 # append a .o file to extra_objects only if it |
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230 # had a slash in it; otherwise, it would s/.o/.c/ |
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231 # and append it to sources. Hmmmm. |
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232 ext.extra_objects.append(word) |
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233 else: |
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234 file.warn("unrecognized argument '%s'" % word) |
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235 |
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236 extensions.append(ext) |
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237 finally: |
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238 file.close() |
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239 |
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240 return extensions |