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annotate Lib/distutils/command/build_clib.py @ 79675:c0a2294de787 2.7

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Issue #16199: Backport 2to3 typo fix from 3.2.
author Chris Jerdonek <chris.jerdonek@gmail.com>
date Thu, 11 Oct 2012 16:15:46 -0700
parents 6240ff5dfebe
children
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
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1 """distutils.command.build_clib
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2
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3 Implements the Distutils 'build_clib' command, to build a C/C++ library
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4 that is included in the module distribution and needed by an extension
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5 module."""
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6
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7 __revision__ = "$Id$"
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8
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9
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10 # XXX this module has *lots* of code ripped-off quite transparently from
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11 # build_ext.py -- not surprisingly really, as the work required to build
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12 # a static library from a collection of C source files is not really all
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13 # that different from what's required to build a shared object file from
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14 # a collection of C source files. Nevertheless, I haven't done the
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15 # necessary refactoring to account for the overlap in code between the
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16 # two modules, mainly because a number of subtle details changed in the
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17 # cut 'n paste. Sigh.
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18
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19 import os
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20 from distutils.core import Command
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21 from distutils.errors import DistutilsSetupError
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22 from distutils.sysconfig import customize_compiler
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23 from distutils import log
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24
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25 def show_compilers():
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26 from distutils.ccompiler import show_compilers
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27 show_compilers()
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29
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30 class build_clib(Command):
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31
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32 description = "build C/C++ libraries used by Python extensions"
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33
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34 user_options = [
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35 ('build-clib=', 'b',
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36 "directory to build C/C++ libraries to"),
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37 ('build-temp=', 't',
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38 "directory to put temporary build by-products"),
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39 ('debug', 'g',
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40 "compile with debugging information"),
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41 ('force', 'f',
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42 "forcibly build everything (ignore file timestamps)"),
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43 ('compiler=', 'c',
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44 "specify the compiler type"),
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45 ]
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46
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47 boolean_options = ['debug', 'force']
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48
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49 help_options = [
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50 ('help-compiler', None,
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51 "list available compilers", show_compilers),
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52 ]
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53
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54 def initialize_options(self):
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55 self.build_clib = None
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56 self.build_temp = None
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57
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58 # List of libraries to build
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59 self.libraries = None
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60
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61 # Compilation options for all libraries
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62 self.include_dirs = None
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63 self.define = None
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64 self.undef = None
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65 self.debug = None
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66 self.force = 0
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67 self.compiler = None
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69
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70 def finalize_options(self):
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71 # This might be confusing: both build-clib and build-temp default
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72 # to build-temp as defined by the "build" command. This is because
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73 # I think that C libraries are really just temporary build
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74 # by-products, at least from the point of view of building Python
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75 # extensions -- but I want to keep my options open.
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76 self.set_undefined_options('build',
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77 ('build_temp', 'build_clib'),
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78 ('build_temp', 'build_temp'),
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79 ('compiler', 'compiler'),
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80 ('debug', 'debug'),
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81 ('force', 'force'))
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82
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83 self.libraries = self.distribution.libraries
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84 if self.libraries:
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85 self.check_library_list(self.libraries)
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86
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87 if self.include_dirs is None:
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88 self.include_dirs = self.distribution.include_dirs or []
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89 if isinstance(self.include_dirs, str):
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90 self.include_dirs = self.include_dirs.split(os.pathsep)
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91
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92 # XXX same as for build_ext -- what about 'self.define' and
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93 # 'self.undef' ?
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94
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95 def run(self):
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96 if not self.libraries:
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97 return
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98
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99 # Yech -- this is cut 'n pasted from build_ext.py!
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100 from distutils.ccompiler import new_compiler
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101 self.compiler = new_compiler(compiler=self.compiler,
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102 dry_run=self.dry_run,
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103 force=self.force)
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104 customize_compiler(self.compiler)
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105
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106 if self.include_dirs is not None:
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107 self.compiler.set_include_dirs(self.include_dirs)
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108 if self.define is not None:
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109 # 'define' option is a list of (name,value) tuples
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110 for (name,value) in self.define:
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111 self.compiler.define_macro(name, value)
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112 if self.undef is not None:
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113 for macro in self.undef:
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114 self.compiler.undefine_macro(macro)
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115
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116 self.build_libraries(self.libraries)
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117
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118
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119 def check_library_list(self, libraries):
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120 """Ensure that the list of libraries is valid.
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121
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122 `library` is presumably provided as a command option 'libraries'.
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123 This method checks that it is a list of 2-tuples, where the tuples
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124 are (library_name, build_info_dict).
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125
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126 Raise DistutilsSetupError if the structure is invalid anywhere;
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127 just returns otherwise.
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128 """
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129 if not isinstance(libraries, list):
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130 raise DistutilsSetupError, \
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131 "'libraries' option must be a list of tuples"
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132
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133 for lib in libraries:
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134 if not isinstance(lib, tuple) and len(lib) != 2:
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135 raise DistutilsSetupError, \
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136 "each element of 'libraries' must a 2-tuple"
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137
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138 name, build_info = lib
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139
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140 if not isinstance(name, str):
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141 raise DistutilsSetupError, \
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142 "first element of each tuple in 'libraries' " + \
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143 "must be a string (the library name)"
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144 if '/' in name or (os.sep != '/' and os.sep in name):
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145 raise DistutilsSetupError, \
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146 ("bad library name '%s': " +
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147 "may not contain directory separators") % \
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148 lib[0]
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149
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150 if not isinstance(build_info, dict):
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151 raise DistutilsSetupError, \
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152 "second element of each tuple in 'libraries' " + \
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153 "must be a dictionary (build info)"
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154
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155 def get_library_names(self):
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156 # Assume the library list is valid -- 'check_library_list()' is
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157 # called from 'finalize_options()', so it should be!
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158 if not self.libraries:
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159 return None
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160
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161 lib_names = []
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162 for (lib_name, build_info) in self.libraries:
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163 lib_names.append(lib_name)
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164 return lib_names
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165
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166
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167 def get_source_files(self):
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168 self.check_library_list(self.libraries)
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169 filenames = []
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170 for (lib_name, build_info) in self.libraries:
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171 sources = build_info.get('sources')
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172 if sources is None or not isinstance(sources, (list, tuple)):
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173 raise DistutilsSetupError, \
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174 ("in 'libraries' option (library '%s'), "
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175 "'sources' must be present and must be "
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176 "a list of source filenames") % lib_name
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177
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178 filenames.extend(sources)
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179 return filenames
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180
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181 def build_libraries(self, libraries):
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182 for (lib_name, build_info) in libraries:
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183 sources = build_info.get('sources')
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184 if sources is None or not isinstance(sources, (list, tuple)):
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185 raise DistutilsSetupError, \
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186 ("in 'libraries' option (library '%s'), " +
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187 "'sources' must be present and must be " +
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188 "a list of source filenames") % lib_name
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189 sources = list(sources)
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190
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191 log.info("building '%s' library", lib_name)
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192
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193 # First, compile the source code to object files in the library
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194 # directory. (This should probably change to putting object
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195 # files in a temporary build directory.)
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196 macros = build_info.get('macros')
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197 include_dirs = build_info.get('include_dirs')
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198 objects = self.compiler.compile(sources,
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199 output_dir=self.build_temp,
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200 macros=macros,
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201 include_dirs=include_dirs,
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202 debug=self.debug)
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203
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204 # Now "link" the object files together into a static library.
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205 # (On Unix at least, this isn't really linking -- it just
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206 # builds an archive. Whatever.)
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207 self.compiler.create_static_lib(objects, lib_name,
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208 output_dir=self.build_clib,
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209 debug=self.debug)