Mercurial > repos > shellac > sam_consensus_v3
annotate env/lib/python3.9/site-packages/setuptools/_distutils/cygwinccompiler.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.cygwinccompiler |
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2 |
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3 Provides the CygwinCCompiler class, a subclass of UnixCCompiler that |
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4 handles the Cygwin port of the GNU C compiler to Windows. It also contains |
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5 the Mingw32CCompiler class which handles the mingw32 port of GCC (same as |
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6 cygwin in no-cygwin mode). |
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7 """ |
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8 |
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9 # problems: |
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10 # |
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11 # * if you use a msvc compiled python version (1.5.2) |
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12 # 1. you have to insert a __GNUC__ section in its config.h |
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13 # 2. you have to generate an import library for its dll |
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14 # - create a def-file for python??.dll |
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15 # - create an import library using |
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16 # dlltool --dllname python15.dll --def python15.def \ |
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17 # --output-lib libpython15.a |
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18 # |
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19 # see also http://starship.python.net/crew/kernr/mingw32/Notes.html |
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20 # |
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21 # * We put export_symbols in a def-file, and don't use |
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22 # --export-all-symbols because it doesn't worked reliable in some |
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23 # tested configurations. And because other windows compilers also |
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24 # need their symbols specified this no serious problem. |
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25 # |
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26 # tested configurations: |
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27 # |
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28 # * cygwin gcc 2.91.57/ld 2.9.4/dllwrap 0.2.4 works |
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29 # (after patching python's config.h and for C++ some other include files) |
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30 # see also http://starship.python.net/crew/kernr/mingw32/Notes.html |
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31 # * mingw32 gcc 2.95.2/ld 2.9.4/dllwrap 0.2.4 works |
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32 # (ld doesn't support -shared, so we use dllwrap) |
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33 # * cygwin gcc 2.95.2/ld 2.10.90/dllwrap 2.10.90 works now |
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34 # - its dllwrap doesn't work, there is a bug in binutils 2.10.90 |
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35 # see also http://sources.redhat.com/ml/cygwin/2000-06/msg01274.html |
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36 # - using gcc -mdll instead dllwrap doesn't work without -static because |
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37 # it tries to link against dlls instead their import libraries. (If |
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38 # it finds the dll first.) |
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39 # By specifying -static we force ld to link against the import libraries, |
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40 # this is windows standard and there are normally not the necessary symbols |
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41 # in the dlls. |
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42 # *** only the version of June 2000 shows these problems |
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43 # * cygwin gcc 3.2/ld 2.13.90 works |
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44 # (ld supports -shared) |
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45 # * mingw gcc 3.2/ld 2.13 works |
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46 # (ld supports -shared) |
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47 |
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48 import os |
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49 import sys |
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50 import copy |
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51 from subprocess import Popen, PIPE, check_output |
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52 import re |
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53 |
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54 from distutils.unixccompiler import UnixCCompiler |
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55 from distutils.file_util import write_file |
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56 from distutils.errors import (DistutilsExecError, CCompilerError, |
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57 CompileError, UnknownFileError) |
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58 from distutils.version import LooseVersion |
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59 from distutils.spawn import find_executable |
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60 |
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61 def get_msvcr(): |
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62 """Include the appropriate MSVC runtime library if Python was built |
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63 with MSVC 7.0 or later. |
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64 """ |
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65 msc_pos = sys.version.find('MSC v.') |
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66 if msc_pos != -1: |
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67 msc_ver = sys.version[msc_pos+6:msc_pos+10] |
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68 if msc_ver == '1300': |
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69 # MSVC 7.0 |
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70 return ['msvcr70'] |
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71 elif msc_ver == '1310': |
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72 # MSVC 7.1 |
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73 return ['msvcr71'] |
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74 elif msc_ver == '1400': |
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75 # VS2005 / MSVC 8.0 |
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76 return ['msvcr80'] |
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77 elif msc_ver == '1500': |
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78 # VS2008 / MSVC 9.0 |
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79 return ['msvcr90'] |
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80 elif msc_ver == '1600': |
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81 # VS2010 / MSVC 10.0 |
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82 return ['msvcr100'] |
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83 else: |
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84 raise ValueError("Unknown MS Compiler version %s " % msc_ver) |
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85 |
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86 |
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87 class CygwinCCompiler(UnixCCompiler): |
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88 """ Handles the Cygwin port of the GNU C compiler to Windows. |
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89 """ |
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90 compiler_type = 'cygwin' |
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91 obj_extension = ".o" |
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92 static_lib_extension = ".a" |
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93 shared_lib_extension = ".dll" |
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94 static_lib_format = "lib%s%s" |
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95 shared_lib_format = "%s%s" |
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96 exe_extension = ".exe" |
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97 |
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98 def __init__(self, verbose=0, dry_run=0, force=0): |
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99 |
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100 UnixCCompiler.__init__(self, verbose, dry_run, force) |
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101 |
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102 status, details = check_config_h() |
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103 self.debug_print("Python's GCC status: %s (details: %s)" % |
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104 (status, details)) |
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105 if status is not CONFIG_H_OK: |
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106 self.warn( |
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107 "Python's pyconfig.h doesn't seem to support your compiler. " |
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108 "Reason: %s. " |
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109 "Compiling may fail because of undefined preprocessor macros." |
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110 % details) |
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111 |
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112 self.gcc_version, self.ld_version, self.dllwrap_version = \ |
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113 get_versions() |
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114 self.debug_print(self.compiler_type + ": gcc %s, ld %s, dllwrap %s\n" % |
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115 (self.gcc_version, |
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116 self.ld_version, |
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117 self.dllwrap_version) ) |
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118 |
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119 # ld_version >= "2.10.90" and < "2.13" should also be able to use |
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120 # gcc -mdll instead of dllwrap |
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121 # Older dllwraps had own version numbers, newer ones use the |
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122 # same as the rest of binutils ( also ld ) |
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123 # dllwrap 2.10.90 is buggy |
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124 if self.ld_version >= "2.10.90": |
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125 self.linker_dll = "gcc" |
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126 else: |
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127 self.linker_dll = "dllwrap" |
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128 |
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129 # ld_version >= "2.13" support -shared so use it instead of |
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130 # -mdll -static |
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131 if self.ld_version >= "2.13": |
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132 shared_option = "-shared" |
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133 else: |
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134 shared_option = "-mdll -static" |
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135 |
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136 # Hard-code GCC because that's what this is all about. |
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137 # XXX optimization, warnings etc. should be customizable. |
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138 self.set_executables(compiler='gcc -mcygwin -O -Wall', |
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139 compiler_so='gcc -mcygwin -mdll -O -Wall', |
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140 compiler_cxx='g++ -mcygwin -O -Wall', |
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141 linker_exe='gcc -mcygwin', |
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142 linker_so=('%s -mcygwin %s' % |
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143 (self.linker_dll, shared_option))) |
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144 |
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145 # cygwin and mingw32 need different sets of libraries |
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146 if self.gcc_version == "2.91.57": |
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147 # cygwin shouldn't need msvcrt, but without the dlls will crash |
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148 # (gcc version 2.91.57) -- perhaps something about initialization |
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149 self.dll_libraries=["msvcrt"] |
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150 self.warn( |
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151 "Consider upgrading to a newer version of gcc") |
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152 else: |
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153 # Include the appropriate MSVC runtime library if Python was built |
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154 # with MSVC 7.0 or later. |
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155 self.dll_libraries = get_msvcr() |
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156 |
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157 def _compile(self, obj, src, ext, cc_args, extra_postargs, pp_opts): |
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158 """Compiles the source by spawning GCC and windres if needed.""" |
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159 if ext == '.rc' or ext == '.res': |
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160 # gcc needs '.res' and '.rc' compiled to object files !!! |
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161 try: |
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162 self.spawn(["windres", "-i", src, "-o", obj]) |
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163 except DistutilsExecError as msg: |
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164 raise CompileError(msg) |
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165 else: # for other files use the C-compiler |
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166 try: |
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167 self.spawn(self.compiler_so + cc_args + [src, '-o', obj] + |
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168 extra_postargs) |
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169 except DistutilsExecError as msg: |
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170 raise CompileError(msg) |
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171 |
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172 def link(self, target_desc, objects, output_filename, output_dir=None, |
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173 libraries=None, library_dirs=None, runtime_library_dirs=None, |
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174 export_symbols=None, debug=0, extra_preargs=None, |
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175 extra_postargs=None, build_temp=None, target_lang=None): |
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176 """Link the objects.""" |
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177 # use separate copies, so we can modify the lists |
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178 extra_preargs = copy.copy(extra_preargs or []) |
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179 libraries = copy.copy(libraries or []) |
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180 objects = copy.copy(objects or []) |
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181 |
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182 # Additional libraries |
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183 libraries.extend(self.dll_libraries) |
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184 |
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185 # handle export symbols by creating a def-file |
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186 # with executables this only works with gcc/ld as linker |
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187 if ((export_symbols is not None) and |
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188 (target_desc != self.EXECUTABLE or self.linker_dll == "gcc")): |
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189 # (The linker doesn't do anything if output is up-to-date. |
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190 # So it would probably better to check if we really need this, |
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191 # but for this we had to insert some unchanged parts of |
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192 # UnixCCompiler, and this is not what we want.) |
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193 |
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194 # we want to put some files in the same directory as the |
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195 # object files are, build_temp doesn't help much |
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196 # where are the object files |
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197 temp_dir = os.path.dirname(objects[0]) |
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198 # name of dll to give the helper files the same base name |
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199 (dll_name, dll_extension) = os.path.splitext( |
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200 os.path.basename(output_filename)) |
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201 |
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202 # generate the filenames for these files |
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203 def_file = os.path.join(temp_dir, dll_name + ".def") |
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204 lib_file = os.path.join(temp_dir, 'lib' + dll_name + ".a") |
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205 |
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206 # Generate .def file |
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207 contents = [ |
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208 "LIBRARY %s" % os.path.basename(output_filename), |
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209 "EXPORTS"] |
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210 for sym in export_symbols: |
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211 contents.append(sym) |
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212 self.execute(write_file, (def_file, contents), |
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213 "writing %s" % def_file) |
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214 |
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215 # next add options for def-file and to creating import libraries |
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216 |
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217 # dllwrap uses different options than gcc/ld |
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218 if self.linker_dll == "dllwrap": |
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219 extra_preargs.extend(["--output-lib", lib_file]) |
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220 # for dllwrap we have to use a special option |
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221 extra_preargs.extend(["--def", def_file]) |
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222 # we use gcc/ld here and can be sure ld is >= 2.9.10 |
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223 else: |
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224 # doesn't work: bfd_close build\...\libfoo.a: Invalid operation |
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225 #extra_preargs.extend(["-Wl,--out-implib,%s" % lib_file]) |
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226 # for gcc/ld the def-file is specified as any object files |
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227 objects.append(def_file) |
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228 |
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229 #end: if ((export_symbols is not None) and |
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230 # (target_desc != self.EXECUTABLE or self.linker_dll == "gcc")): |
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231 |
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232 # who wants symbols and a many times larger output file |
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233 # should explicitly switch the debug mode on |
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234 # otherwise we let dllwrap/ld strip the output file |
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235 # (On my machine: 10KiB < stripped_file < ??100KiB |
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236 # unstripped_file = stripped_file + XXX KiB |
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237 # ( XXX=254 for a typical python extension)) |
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238 if not debug: |
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239 extra_preargs.append("-s") |
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240 |
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241 UnixCCompiler.link(self, target_desc, objects, output_filename, |
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242 output_dir, libraries, library_dirs, |
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243 runtime_library_dirs, |
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244 None, # export_symbols, we do this in our def-file |
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245 debug, extra_preargs, extra_postargs, build_temp, |
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246 target_lang) |
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247 |
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248 # -- Miscellaneous methods ----------------------------------------- |
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249 |
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250 def object_filenames(self, source_filenames, strip_dir=0, output_dir=''): |
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251 """Adds supports for rc and res files.""" |
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252 if output_dir is None: |
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253 output_dir = '' |
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254 obj_names = [] |
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255 for src_name in source_filenames: |
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256 # use normcase to make sure '.rc' is really '.rc' and not '.RC' |
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257 base, ext = os.path.splitext(os.path.normcase(src_name)) |
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258 if ext not in (self.src_extensions + ['.rc','.res']): |
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259 raise UnknownFileError("unknown file type '%s' (from '%s')" % \ |
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260 (ext, src_name)) |
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261 if strip_dir: |
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262 base = os.path.basename (base) |
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263 if ext in ('.res', '.rc'): |
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264 # these need to be compiled to object files |
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265 obj_names.append (os.path.join(output_dir, |
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266 base + ext + self.obj_extension)) |
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267 else: |
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268 obj_names.append (os.path.join(output_dir, |
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269 base + self.obj_extension)) |
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270 return obj_names |
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271 |
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272 # the same as cygwin plus some additional parameters |
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273 class Mingw32CCompiler(CygwinCCompiler): |
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274 """ Handles the Mingw32 port of the GNU C compiler to Windows. |
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275 """ |
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276 compiler_type = 'mingw32' |
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277 |
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278 def __init__(self, verbose=0, dry_run=0, force=0): |
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279 |
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280 CygwinCCompiler.__init__ (self, verbose, dry_run, force) |
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281 |
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282 # ld_version >= "2.13" support -shared so use it instead of |
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283 # -mdll -static |
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284 if self.ld_version >= "2.13": |
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285 shared_option = "-shared" |
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286 else: |
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287 shared_option = "-mdll -static" |
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288 |
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289 # A real mingw32 doesn't need to specify a different entry point, |
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290 # but cygwin 2.91.57 in no-cygwin-mode needs it. |
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291 if self.gcc_version <= "2.91.57": |
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292 entry_point = '--entry _DllMain@12' |
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293 else: |
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294 entry_point = '' |
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295 |
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296 if is_cygwingcc(): |
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297 raise CCompilerError( |
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298 'Cygwin gcc cannot be used with --compiler=mingw32') |
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299 |
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300 self.set_executables(compiler='gcc -O -Wall', |
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301 compiler_so='gcc -mdll -O -Wall', |
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302 compiler_cxx='g++ -O -Wall', |
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303 linker_exe='gcc', |
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304 linker_so='%s %s %s' |
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305 % (self.linker_dll, shared_option, |
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306 entry_point)) |
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307 # Maybe we should also append -mthreads, but then the finished |
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308 # dlls need another dll (mingwm10.dll see Mingw32 docs) |
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309 # (-mthreads: Support thread-safe exception handling on `Mingw32') |
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310 |
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311 # no additional libraries needed |
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312 self.dll_libraries=[] |
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313 |
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314 # Include the appropriate MSVC runtime library if Python was built |
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315 # with MSVC 7.0 or later. |
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316 self.dll_libraries = get_msvcr() |
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317 |
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318 # Because these compilers aren't configured in Python's pyconfig.h file by |
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319 # default, we should at least warn the user if he is using an unmodified |
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320 # version. |
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321 |
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322 CONFIG_H_OK = "ok" |
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323 CONFIG_H_NOTOK = "not ok" |
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324 CONFIG_H_UNCERTAIN = "uncertain" |
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325 |
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326 def check_config_h(): |
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327 """Check if the current Python installation appears amenable to building |
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328 extensions with GCC. |
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329 |
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330 Returns a tuple (status, details), where 'status' is one of the following |
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331 constants: |
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332 |
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333 - CONFIG_H_OK: all is well, go ahead and compile |
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334 - CONFIG_H_NOTOK: doesn't look good |
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335 - CONFIG_H_UNCERTAIN: not sure -- unable to read pyconfig.h |
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336 |
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337 'details' is a human-readable string explaining the situation. |
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338 |
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339 Note there are two ways to conclude "OK": either 'sys.version' contains |
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340 the string "GCC" (implying that this Python was built with GCC), or the |
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341 installed "pyconfig.h" contains the string "__GNUC__". |
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342 """ |
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343 |
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344 # XXX since this function also checks sys.version, it's not strictly a |
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345 # "pyconfig.h" check -- should probably be renamed... |
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346 |
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347 from distutils import sysconfig |
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348 |
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349 # if sys.version contains GCC then python was compiled with GCC, and the |
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350 # pyconfig.h file should be OK |
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351 if "GCC" in sys.version: |
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352 return CONFIG_H_OK, "sys.version mentions 'GCC'" |
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353 |
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354 # let's see if __GNUC__ is mentioned in python.h |
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355 fn = sysconfig.get_config_h_filename() |
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356 try: |
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357 config_h = open(fn) |
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358 try: |
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359 if "__GNUC__" in config_h.read(): |
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360 return CONFIG_H_OK, "'%s' mentions '__GNUC__'" % fn |
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361 else: |
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362 return CONFIG_H_NOTOK, "'%s' does not mention '__GNUC__'" % fn |
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363 finally: |
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364 config_h.close() |
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365 except OSError as exc: |
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366 return (CONFIG_H_UNCERTAIN, |
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367 "couldn't read '%s': %s" % (fn, exc.strerror)) |
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368 |
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369 RE_VERSION = re.compile(br'(\d+\.\d+(\.\d+)*)') |
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370 |
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371 def _find_exe_version(cmd): |
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372 """Find the version of an executable by running `cmd` in the shell. |
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373 |
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374 If the command is not found, or the output does not match |
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375 `RE_VERSION`, returns None. |
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376 """ |
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377 executable = cmd.split()[0] |
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378 if find_executable(executable) is None: |
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379 return None |
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380 out = Popen(cmd, shell=True, stdout=PIPE).stdout |
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381 try: |
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382 out_string = out.read() |
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383 finally: |
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384 out.close() |
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385 result = RE_VERSION.search(out_string) |
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386 if result is None: |
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387 return None |
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388 # LooseVersion works with strings |
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389 # so we need to decode our bytes |
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390 return LooseVersion(result.group(1).decode()) |
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391 |
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392 def get_versions(): |
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393 """ Try to find out the versions of gcc, ld and dllwrap. |
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394 |
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395 If not possible it returns None for it. |
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396 """ |
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397 commands = ['gcc -dumpversion', 'ld -v', 'dllwrap --version'] |
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398 return tuple([_find_exe_version(cmd) for cmd in commands]) |
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399 |
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400 def is_cygwingcc(): |
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401 '''Try to determine if the gcc that would be used is from cygwin.''' |
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402 out_string = check_output(['gcc', '-dumpmachine']) |
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403 return out_string.strip().endswith(b'cygwin') |