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- Issue #7658: Ensure that the new pythonw executable works on OSX 10.4 - Issue #7714: Use ``gcc -dumpversion`` to detect the version of GCC on MacOSX. - Make configure look for util.h as well as libutil.h. The former is the header file that on OSX contains the defition of openpty. (Needed to compile for OSX 10.4 on OSX 10.6) - Use the correct definition of CC to compile the pythonw executable
author Ronald Oussoren <ronaldoussoren@mac.com>
date Sun, 17 Jan 2010 16:25:57 +0000
parents aaeb65bab3c0
children 2990bd3ae883
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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38176
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1 /*
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2 * This wrapper program executes a python executable hidden inside an
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3 * application bundle inside the Python framework. This is needed to run
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4 * GUI code: some GUI API's don't work unless the program is inside an
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5 * application bundle.
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6 *
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7 * This program uses posix_spawn rather than plain execv because we need
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8 * slightly more control over how the "real" interpreter is executed.
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9 *
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10 * On OSX 10.4 (and earlier) this falls back to using exec because the
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11 * posix_spawnv functions aren't available there.
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12 */
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13 #pragma weak_import posix_spawnattr_init
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14 #pragma weak_import posix_spawnattr_setbinpref_np
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15 #pragma weak_import posix_spawnattr_setflags
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16 #pragma weak_import posix_spawn
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17
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18 #include <Python.h>
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19 #include <unistd.h>
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20 #ifdef HAVE_SPAWN_H
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21 #include <spawn.h>
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22 #endif
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23 #include <stdio.h>
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24 #include <string.h>
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25 #include <errno.h>
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26 #include <err.h>
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27 #include <dlfcn.h>
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28 #include <stdlib.h>
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29
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30
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31 extern char** environ;
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32
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33 /*
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34 * Locate the python framework by looking for the
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35 * library that contains Py_Initialize.
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36 *
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37 * In a regular framework the structure is:
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38 *
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39 * Python.framework/Versions/2.7
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40 * /Python
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41 * /Resources/Python.app/Contents/MacOS/Python
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42 *
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43 * In a virtualenv style structure the expected
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44 * structure is:
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45 *
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46 * ROOT
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47 * /bin/pythonw
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48 * /.Python <- the dylib
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49 * /.Resources/Python.app/Contents/MacOS/Python
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50 *
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51 * NOTE: virtualenv's are not an officially supported
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52 * feature, support for that structure is provided as
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53 * a convenience.
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54 */
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55 static char* get_python_path(void)
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56 {
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57 size_t len;
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58 Dl_info info;
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59 char* end;
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60 char* g_path;
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61
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62 if (dladdr(Py_Initialize, &info) == 0) {
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63 return NULL;
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64 }
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65
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66 len = strlen(info.dli_fname);
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67
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68 g_path = malloc(len+60);
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69 if (g_path == NULL) {
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70 return NULL;
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71 }
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72
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73 strcpy(g_path, info.dli_fname);
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74 end = g_path + len - 1;
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75 while (end != g_path && *end != '/') {
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76 end --;
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77 }
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78 end++;
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79 if (end[1] == '.') {
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80 end++;
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81 }
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82 strcpy(end, "Resources/Python.app/Contents/MacOS/Python");
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83
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84 return g_path;
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85 }
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86
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87 #ifdef HAVE_SPAWN_H
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88 static void
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89 setup_spawnattr(posix_spawnattr_t* spawnattr)
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90 {
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91 size_t ocount;
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92 size_t count;
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93 cpu_type_t cpu_types[1];
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94 short flags = 0;
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95 #ifdef __LP64__
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96 int ch;
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97 #endif
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98
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99 if ((errno = posix_spawnattr_init(spawnattr)) != 0) {
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100 err(2, "posix_spawnattr_int");
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101 /* NOTREACHTED */
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102 }
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103
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104 count = 1;
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105
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106 /* Run the real python executable using the same architure as this
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107 * executable, this allows users to controle the architecture using
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108 * "arch -ppc python"
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109 */
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110
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111 #if defined(__ppc64__)
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112 cpu_types[0] = CPU_TYPE_POWERPC64;
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113
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114 #elif defined(__x86_64__)
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115 cpu_types[0] = CPU_TYPE_X86_64;
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116
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117 #elif defined(__ppc__)
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118 cpu_types[0] = CPU_TYPE_POWERPC;
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119 #elif defined(__i386__)
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120 cpu_types[0] = CPU_TYPE_X86;
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121 #else
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122 # error "Unknown CPU"
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123 #endif
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124
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125 if (posix_spawnattr_setbinpref_np(spawnattr, count,
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126 cpu_types, &ocount) == -1) {
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127 err(1, "posix_spawnattr_setbinpref");
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128 /* NOTREACHTED */
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129 }
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130 if (count != ocount) {
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131 fprintf(stderr, "posix_spawnattr_setbinpref failed to copy\n");
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132 exit(1);
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133 /* NOTREACHTED */
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134 }
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135
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136
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137 /*
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138 * Set flag that causes posix_spawn to behave like execv
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139 */
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140 flags |= POSIX_SPAWN_SETEXEC;
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141 if ((errno = posix_spawnattr_setflags(spawnattr, flags)) != 0) {
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142 err(1, "posix_spawnattr_setflags");
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143 /* NOTREACHTED */
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144 }
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145 }
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146 #endif
57913
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147
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148 int
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149 main(int argc, char **argv) {
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150 char* exec_path = get_python_path();
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151
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152 #ifdef HAVE_SPAWN_H
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153
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154 /* We're weak-linking to posix-spawnv to ensure that
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155 * an executable build on 10.5 can work on 10.4.
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156 */
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157 if (posix_spawn != NULL) {
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158 posix_spawnattr_t spawnattr = NULL;
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159
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160
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161 setup_spawnattr(&spawnattr);
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162 posix_spawn(NULL, exec_path, NULL,
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163 &spawnattr, argv, environ);
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164 err(1, "posix_spawn: %s", argv[0]);
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165 }
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166 #endif
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167 execve(exec_path, argv, environ);
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168 err(1, "execve: %s", argv[0]);
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169 /* NOTREACHED */
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170 }