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annotate Mac/BuildScript/README.txt @ 80272:ec00f8570c55

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Merge typo fix.
author Ezio Melotti <ezio.melotti@gmail.com>
date Mon, 05 Nov 2012 22:23:16 +0200
parents 6c898f297925
children 6e6a76166c47
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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1 Building a Python Mac OS X distribution
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2 =======================================
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3
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4 The ``build-install.py`` script creates Python distributions, including
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5 certain third-party libraries as necessary. It builds a complete
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6 framework-based Python out-of-tree, installs it in a funny place with
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7 $DESTROOT, massages that installation to remove .pyc files and such, creates
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8 an Installer package from the installation plus other files in ``resources``
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9 and ``scripts`` and placed that on a ``.dmg`` disk image.
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10
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11 As of Python 3.3.0, PSF practice is to build two installer variants
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12 for each release.
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13
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14 1. 32-bit-only, i386 and PPC universal, capable on running on all machines
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15 supported by Mac OS X 10.5 through (at least) 10.8::
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16
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17 /usr/bin/python build-installer.py \
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18 --sdk-path=/Developer/SDKs/MacOSX10.5.sdk \
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19 --universal-archs=32-bit \
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20 --dep-target=10.5
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21
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22 - builds the following third-party libraries
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23
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24 * NCurses 5.9 (http://bugs.python.org/issue15037)
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25 * SQLite 3.7.13
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26 * XZ 5.0.3
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27
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28 - uses system-supplied versions of third-party libraries
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29
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30 * readline module links with Apple BSD editline (libedit)
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31
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32 - requires ActiveState ``Tcl/Tk 8.4`` (currently 8.4.19) to be installed for building
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33
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34 - recommended build environment:
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35
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36 * Mac OS X 10.5.8 Intel or PPC
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37 * Xcode 3.1.4
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38 * ``MacOSX10.5`` SDK
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39 * ``MACOSX_DEPLOYMENT_TARGET=10.5``
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40 * Apple ``gcc-4.2``
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41 * system Python 2.5 for documentation build with Sphinx
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42
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43 - alternate build environments:
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44
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45 * Mac OS X 10.6.8 with Xcode 3.2.6
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46 - need to change ``/System/Library/Frameworks/{Tcl,Tk}.framework/Version/Current`` to ``8.4``
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47 * Note Xcode 4.* does not support building for PPC so cannot be used for this build
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48
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49 2. 64-bit / 32-bit, x86_64 and i386 universal, for OS X 10.6 (and later)::
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51 /usr/bin/python build-installer.py \
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52 --sdk-path=/Developer/SDKs/MacOSX10.6.sdk \
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53 --universal-archs=intel \
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54 --dep-target=10.6
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55
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56 - builds the following third-party libraries
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57
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58 * NCurses 5.9 (http://bugs.python.org/issue15037)
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59 * SQLite 3.7.13
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60 * XZ 5.0.3
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61
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62 - uses system-supplied versions of third-party libraries
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63
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64 * readline module links with Apple BSD editline (libedit)
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65
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66 - requires ActiveState Tcl/Tk 8.5.9 (or later) to be installed for building
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67
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68 - recommended build environment:
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69
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70 * Mac OS X 10.6.8 (or later)
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71 * Xcode 3.2.6
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72 * ``MacOSX10.6`` SDK
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73 * ``MACOSX_DEPLOYMENT_TARGET=10.6``
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74 * Apple ``gcc-4.2``
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75 * system Python 2.6 for documentation build with Sphinx
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76
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77 - alternate build environments:
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78
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79 * none. Xcode 4.x currently supplies two C compilers.
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80 ``llvm-gcc-4.2.1`` has been found to miscompile Python 3.3.x and
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81 produce a non-functional Python executable. As it appears to be
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82 considered a migration aid by Apple and is not likely to be fixed,
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83 its use should be avoided. The other compiler, ``clang``, has been
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84 undergoing rapid development. While it appears to have become
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85 production-ready in the most recent Xcode 4 releases (Xcode 4.4.1
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86 as of this writing), there are still some open issues when
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87 building Python and there has not yet been the level of exposure in
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88 production environments that the Xcode 3 gcc-4.2 compiler has had.
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89
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90
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91 * For Python 2.7.x and 3.2.x, the 32-bit-only installer was configured to
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92 support Mac OS X 10.3.9 through (at least) 10.6. Because it is
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93 believed that there are few systems still running OS X 10.3 or 10.4
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94 and because it has become increasingly difficult to test and
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95 support the differences in these earlier systems, as of Python 3.3.0 the PSF
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96 32-bit installer no longer supports them. For reference in building such
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97 an installer yourself, the details are::
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98
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99 /usr/bin/python build-installer.py \
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100 --sdk-path=/Developer/SDKs/MacOSX10.4u.sdk \
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101 --universal-archs=32-bit \
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102 --dep-target=10.3
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103
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104 - builds the following third-party libraries
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105
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106 * Bzip2
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107 * NCurses
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108 * GNU Readline (GPL)
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109 * SQLite 3
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110 * XZ
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111 * Zlib 1.2.3
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112 * Oracle Sleepycat DB 4.8 (Python 2.x only)
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113
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114 - requires ActiveState ``Tcl/Tk 8.4`` (currently 8.4.19) to be installed for building
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115
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116 - recommended build environment:
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117
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118 * Mac OS X 10.5.8 PPC or Intel
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119 * Xcode 3.1.4 (or later)
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120 * ``MacOSX10.4u`` SDK (later SDKs do not support PPC G3 processors)
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121 * ``MACOSX_DEPLOYMENT_TARGET=10.3``
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122 * Apple ``gcc-4.0``
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123 * system Python 2.5 for documentation build with Sphinx
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124
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125 - alternate build environments:
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126
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127 * Mac OS X 10.6.8 with Xcode 3.2.6
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128 - need to change ``/System/Library/Frameworks/{Tcl,Tk}.framework/Version/Current`` to ``8.4``
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129
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130
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131
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132 General Prerequisites
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133 ---------------------
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134
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135 * No Fink (in ``/sw``) or MacPorts (in ``/opt/local``) or other local
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136 libraries or utilities (in ``/usr/local``) as they could
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137 interfere with the build.
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138
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139 * The documentation for the release is built using Sphinx
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140 because it is included in the installer.
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141
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142 * It is safest to start each variant build with an empty source directory
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143 populated with a fresh copy of the untarred source.
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144
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145 * It is recommended that you remove any existing installed version of the
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146 Python being built::
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147
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148 sudo rm -rf /Library/Frameworks/Python.framework/Versions/n.n
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149
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150
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151 The Recipe
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152 ----------
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153
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154 Here are the steps you need to follow to build a Python installer:
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155
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156 * Run ``build-installer.py``. Optionally you can pass a number of arguments
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157 to specify locations of various files. Please see the top of
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158 ``build-installer.py`` for its usage.
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159
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160 Running this script takes some time, it will not only build Python itself
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161 but also some 3th-party libraries that are needed for extensions.
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162
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163 * When done the script will tell you where the DMG image is (by default
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164 somewhere in ``/tmp/_py``).
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165
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166 Building other universal installers
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167 ...................................
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168
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169 It is also possible to build a 4-way universal installer that runs on
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170 OS X 10.5 Leopard or later::
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171
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172 /usr/bin/python /build-installer.py \
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173 --dep-target=10.5
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174 --universal-archs=all
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175 --sdk-path=/Developer/SDKs/MacOSX10.5.sdk
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176
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177 This requires that the deployment target is 10.5, and hence
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178 also that you are building on at least OS X 10.5. 4-way includes
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179 ``i386``, ``x86_64``, ``ppc``, and ``ppc64`` (G5). ``ppc64`` executable
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180 variants can only be run on G5 machines running 10.5. Note that,
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181 while OS X 10.6 is only supported on Intel-based machines, it is possible
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182 to run ``ppc`` (32-bit) executables unmodified thanks to the Rosetta ppc
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183 emulation in OS X 10.5 and 10.6. The 4-way installer variant must be
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184 built with Xcode 3. It is not regularly built or tested.
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185
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186 Other ``--universal-archs`` options are ``64-bit`` (``x86_64``, ``ppc64``),
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187 and ``3-way`` (``ppc``, ``i386``, ``x86_64``). None of these options
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188 are regularly exercised; use at your own risk.
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189
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190
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191 Testing
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192 -------
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193
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194 Ideally, the resulting binaries should be installed and the test suite run
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195 on all supported OS X releases and architectures. As a practical matter,
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196 that is generally not possible. At a minimum, variant 1 should be run on
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197 a PPC G4 system with OS X 10.5 and at least one Intel system running OS X
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198 10.8, 10.7, 10.6, or 10.5. Variant 2 should be run on 10.8, 10.7, and 10.6
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199 systems in both 32-bit and 64-bit modes.::
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200
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201 /usr/local/bin/pythonn.n -m test -w -u all,-largefile
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202 /usr/local/bin/pythonn.n-32 -m test -w -u all
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203
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204 Certain tests will be skipped and some cause the interpreter to fail
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205 which will likely generate ``Python quit unexpectedly`` alert messages
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206 to be generated at several points during a test run. These are normal
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207 during testing and can be ignored.
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208
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209 It is also recommend to launch IDLE and verify that it is at least
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210 functional. Double-click on the IDLE app icon in ``/Applications/Pythonn.n``.
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211 It should also be tested from the command line::
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212
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213 /usr/local/bin/idlen.n
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214