Mercurial > hg > CbC > CbC_gcc
annotate gcc/config/darwin-driver.c @ 116:367f9f4f266e
fix gimple.h
| author | mir3636 |
|---|---|
| date | Tue, 28 Nov 2017 20:22:01 +0900 (2017-11-28) |
| parents | 04ced10e8804 |
| children | 84e7813d76e9 |
| rev | line source |
|---|---|
| 0 | 1 /* Additional functions for the GCC driver on Darwin native. |
| 111 | 2 Copyright (C) 2006-2017 Free Software Foundation, Inc. |
| 0 | 3 Contributed by Apple Computer Inc. |
| 4 | |
| 5 This file is part of GCC. | |
| 6 | |
| 7 GCC is free software; you can redistribute it and/or modify | |
| 8 it under the terms of the GNU General Public License as published by | |
| 9 the Free Software Foundation; either version 3, or (at your option) | |
| 10 any later version. | |
| 11 | |
| 12 GCC is distributed in the hope that it will be useful, | |
| 13 but WITHOUT ANY WARRANTY; without even the implied warranty of | |
| 14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
| 15 GNU General Public License for more details. | |
| 16 | |
| 17 You should have received a copy of the GNU General Public License | |
| 18 along with GCC; see the file COPYING3. If not see | |
| 19 <http://www.gnu.org/licenses/>. */ | |
| 20 | |
| 21 #include "config.h" | |
| 111 | 22 #include "libiberty.h" |
| 0 | 23 #include "system.h" |
| 24 #include "coretypes.h" | |
| 25 #include "tm.h" | |
|
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26 #include "opts.h" |
| 111 | 27 #include "diagnostic-core.h" |
|
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28 |
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29 #ifndef CROSS_DIRECTORY_STRUCTURE |
| 0 | 30 #include <sys/sysctl.h> |
| 31 #include "xregex.h" | |
| 32 | |
| 111 | 33 static char * |
| 34 darwin_find_version_from_kernel (void) | |
| 0 | 35 { |
| 36 char osversion[32]; | |
| 37 size_t osversion_len = sizeof (osversion) - 1; | |
| 38 static int osversion_name[2] = { CTL_KERN, KERN_OSRELEASE }; | |
| 111 | 39 int major_vers; |
| 0 | 40 char * version_p; |
| 111 | 41 char * new_flag; |
| 0 | 42 |
| 43 /* Determine the version of the running OS. If we can't, warn user, | |
| 44 and do nothing. */ | |
| 45 if (sysctl (osversion_name, ARRAY_SIZE (osversion_name), osversion, | |
| 46 &osversion_len, NULL, 0) == -1) | |
| 47 { | |
|
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48 warning (0, "sysctl for kern.osversion failed: %m"); |
| 111 | 49 return NULL; |
| 0 | 50 } |
| 51 | |
| 52 /* Try to parse the first two parts of the OS version number. Warn | |
| 53 user and return if it doesn't make sense. */ | |
| 54 if (! ISDIGIT (osversion[0])) | |
| 55 goto parse_failed; | |
| 56 major_vers = osversion[0] - '0'; | |
| 57 version_p = osversion + 1; | |
| 58 if (ISDIGIT (*version_p)) | |
| 59 major_vers = major_vers * 10 + (*version_p++ - '0'); | |
| 60 if (*version_p++ != '.') | |
| 61 goto parse_failed; | |
| 62 | |
| 63 /* The major kernel version number is 4 plus the second OS version | |
| 64 component. */ | |
| 65 if (major_vers - 4 <= 4) | |
| 66 /* On 10.4 and earlier, the old linker is used which does not | |
| 111 | 67 support three-component system versions. |
| 68 FIXME: we should not assume this - a newer linker could be used. */ | |
| 69 asprintf (&new_flag, "10.%d", major_vers - 4); | |
| 0 | 70 else |
| 111 | 71 /* Although the newer linker supports three-component system |
| 72 versions, there's no guarantee that the minor version component | |
| 73 of the kernel and the system are the same. Apple's clang always | |
| 74 uses 0 as the minor version: do the same. */ | |
| 75 asprintf (&new_flag, "10.%d.0", major_vers - 4); | |
| 0 | 76 |
| 111 | 77 return new_flag; |
| 78 | |
| 0 | 79 parse_failed: |
|
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80 warning (0, "couldn%'t understand kern.osversion %q.*s", |
| 0 | 81 (int) osversion_len, osversion); |
| 111 | 82 return NULL; |
| 0 | 83 } |
| 111 | 84 #endif |
| 0 | 85 |
| 111 | 86 /* When running on a Darwin system and using that system's headers and |
| 87 libraries, default the -mmacosx-version-min flag to be the version | |
| 88 of the system on which the compiler is running. | |
| 89 | |
| 90 When building cross or native cross compilers, default to the OSX | |
| 91 version of the target (as provided by the most specific target header | |
| 92 included in tm.h). This may be overidden by setting the flag explicitly | |
| 93 (or by the MACOSX_DEPLOYMENT_TARGET environment). */ | |
| 94 | |
| 95 static const char * | |
| 96 darwin_default_min_version (void) | |
| 97 { | |
| 98 /* Try to retrieve the deployment target from the environment. */ | |
| 99 const char *new_flag = getenv ("MACOSX_DEPLOYMENT_TARGET"); | |
| 100 | |
| 101 /* Apparently, an empty string for MACOSX_DEPLOYMENT_TARGET means | |
| 102 "use the default". Or, possibly "use 10.1". We choose | |
| 103 to ignore the environment variable, as if it was never set. */ | |
| 104 if (new_flag == NULL || new_flag[0] == 0) | |
| 105 #ifndef CROSS_DIRECTORY_STRUCTURE | |
| 106 /* Try to find the version from the kernel, if we fail - we print a | |
| 107 message and give up. */ | |
| 108 new_flag = darwin_find_version_from_kernel (); | |
| 109 #else | |
| 110 /* For cross-compilers, default to a minimum version determined by | |
| 111 the configuration. */ | |
| 112 new_flag = DEF_MIN_OSX_VERSION; | |
| 0 | 113 #endif /* CROSS_DIRECTORY_STRUCTURE */ |
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114 |
| 111 | 115 if (new_flag != NULL) |
| 116 { | |
| 117 size_t len = strlen (new_flag); | |
| 118 if (len > 128) { /* Arbitrary limit, number should be like xx.yy.zz */ | |
| 119 warning (0, "couldn%'t understand version %s\n", new_flag); | |
| 120 return NULL; | |
| 121 } | |
| 122 new_flag = xstrndup (new_flag, len); | |
| 123 } | |
| 124 return new_flag; | |
| 125 } | |
| 126 | |
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127 /* Translate -filelist and -framework options in *DECODED_OPTIONS |
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128 (size *DECODED_OPTIONS_COUNT) to use -Xlinker so that they are |
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129 considered to be linker inputs in the case that no other inputs are |
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130 specified. Handling these options in DRIVER_SELF_SPECS does not |
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131 suffice because specs are too late to add linker inputs, and |
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132 handling them in LINK_SPEC does not suffice because the linker will |
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133 not be called if there are no other inputs. When native, also |
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134 default the -mmacosx-version-min flag. */ |
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135 |
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136 void |
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137 darwin_driver_init (unsigned int *decoded_options_count, |
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138 struct cl_decoded_option **decoded_options) |
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139 { |
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140 unsigned int i; |
| 111 | 141 bool seenX86 = false; |
| 142 bool seenX86_64 = false; | |
| 143 bool seenPPC = false; | |
| 144 bool seenPPC64 = false; | |
| 145 bool seenM32 = false; | |
| 146 bool seenM64 = false; | |
| 147 bool appendM32 = false; | |
| 148 bool appendM64 = false; | |
| 149 const char *vers_string = NULL; | |
| 150 bool seen_version_min = false; | |
|
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151 |
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152 for (i = 1; i < *decoded_options_count; i++) |
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153 { |
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154 if ((*decoded_options)[i].errors & CL_ERR_MISSING_ARG) |
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155 continue; |
| 111 | 156 |
|
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157 switch ((*decoded_options)[i].opt_index) |
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158 { |
| 111 | 159 case OPT_arch: |
| 160 /* Support provision of a single -arch xxxx flag as a means of | |
| 161 specifying the sub-target/multi-lib. Translate this into -m32/64 | |
| 162 as appropriate. */ | |
| 163 if (!strcmp ((*decoded_options)[i].arg, "i386")) | |
| 164 seenX86 = true; | |
| 165 else if (!strcmp ((*decoded_options)[i].arg, "x86_64")) | |
| 166 seenX86_64 = true; | |
| 167 else if (!strcmp ((*decoded_options)[i].arg, "ppc")) | |
| 168 seenPPC = true; | |
| 169 else if (!strcmp ((*decoded_options)[i].arg, "ppc64")) | |
| 170 seenPPC64 = true; | |
| 171 else | |
| 172 error ("this compiler does not support %s", | |
| 173 (*decoded_options)[i].arg); | |
| 174 /* Now we've examined it, drop the -arch arg. */ | |
| 175 if (*decoded_options_count > i) { | |
| 176 memmove (*decoded_options + i, | |
| 177 *decoded_options + i + 1, | |
| 178 ((*decoded_options_count - i) | |
| 179 * sizeof (struct cl_decoded_option))); | |
| 180 } | |
| 181 --i; | |
| 182 --*decoded_options_count; | |
| 183 break; | |
| 184 | |
| 185 case OPT_m32: | |
| 186 seenM32 = true; | |
| 187 break; | |
| 188 | |
| 189 case OPT_m64: | |
| 190 seenM64 = true; | |
| 191 break; | |
| 192 | |
|
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193 case OPT_filelist: |
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194 case OPT_framework: |
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195 ++*decoded_options_count; |
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196 *decoded_options = XRESIZEVEC (struct cl_decoded_option, |
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197 *decoded_options, |
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198 *decoded_options_count); |
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199 memmove (*decoded_options + i + 2, |
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200 *decoded_options + i + 1, |
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201 ((*decoded_options_count - i - 2) |
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202 * sizeof (struct cl_decoded_option))); |
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203 generate_option (OPT_Xlinker, (*decoded_options)[i].arg, 1, |
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204 CL_DRIVER, &(*decoded_options)[i + 1]); |
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205 generate_option (OPT_Xlinker, |
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206 (*decoded_options)[i].canonical_option[0], 1, |
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207 CL_DRIVER, &(*decoded_options)[i]); |
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208 break; |
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209 |
| 111 | 210 case OPT_mmacosx_version_min_: |
| 211 seen_version_min = true; | |
| 212 vers_string = xstrndup ((*decoded_options)[i].arg, 32); | |
| 213 | |
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214 default: |
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215 break; |
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216 } |
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217 } |
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218 |
| 111 | 219 /* Turn -arch xxxx into the appropriate -m32/-m64 flag. |
| 220 If the User tried to specify multiple arch flags (which is possible with | |
| 221 some Darwin compilers) warn that this mode is not supported by this | |
| 222 compiler (and ignore the arch flags, which means that the default multi- | |
| 223 lib will be generated). */ | |
| 224 /* TODO: determine if these warnings would better be errors. */ | |
| 225 #if DARWIN_X86 | |
| 226 if (seenPPC || seenPPC64) | |
| 227 warning (0, "this compiler does not support PowerPC (arch flags ignored)"); | |
| 228 if (seenX86) | |
| 229 { | |
| 230 if (seenX86_64 || seenM64) | |
| 231 warning (0, "%s conflicts with i386 (arch flags ignored)", | |
| 232 (seenX86_64? "x86_64": "m64")); | |
| 233 else if (! seenM32) /* Add -m32 if the User didn't. */ | |
| 234 appendM32 = true; | |
| 235 } | |
| 236 else if (seenX86_64) | |
| 237 { | |
| 238 if (seenX86 || seenM32) | |
| 239 warning (0, "%s conflicts with x86_64 (arch flags ignored)", | |
| 240 (seenX86? "i386": "m32")); | |
| 241 else if (! seenM64) /* Add -m64 if the User didn't. */ | |
| 242 appendM64 = true; | |
| 243 } | |
| 244 #elif DARWIN_PPC | |
| 245 if (seenX86 || seenX86_64) | |
| 246 warning (0, "this compiler does not support X86 (arch flags ignored)"); | |
| 247 if (seenPPC) | |
| 248 { | |
| 249 if (seenPPC64 || seenM64) | |
| 250 warning (0, "%s conflicts with ppc (arch flags ignored)", | |
| 251 (seenPPC64? "ppc64": "m64")); | |
| 252 else if (! seenM32) /* Add -m32 if the User didn't. */ | |
| 253 appendM32 = true; | |
| 254 } | |
| 255 else if (seenPPC64) | |
| 256 { | |
| 257 if (seenPPC || seenM32) | |
| 258 warning (0, "%s conflicts with ppc64 (arch flags ignored)", | |
| 259 (seenPPC? "ppc": "m32")); | |
| 260 else if (! seenM64) /* Add -m64 if the User didn't. */ | |
| 261 appendM64 = true; | |
| 262 } | |
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263 #endif |
| 111 | 264 |
| 265 if (appendM32 || appendM64) | |
| 266 { | |
| 267 ++*decoded_options_count; | |
| 268 *decoded_options = XRESIZEVEC (struct cl_decoded_option, | |
| 269 *decoded_options, | |
| 270 *decoded_options_count); | |
| 271 generate_option (appendM32 ? OPT_m32 : OPT_m64, NULL, 1, CL_DRIVER, | |
| 272 &(*decoded_options)[*decoded_options_count - 1]); | |
| 273 } | |
| 274 | |
| 275 /* We will need to know the OS X version we're trying to build for here | |
| 276 so that we can figure out the mechanism and source for the sysroot to | |
| 277 be used. */ | |
| 278 if (! seen_version_min && *decoded_options_count > 1) | |
| 279 { | |
| 280 /* Not set by the User, try to figure it out. */ | |
| 281 vers_string = darwin_default_min_version (); | |
| 282 if (vers_string != NULL) | |
| 283 { | |
| 284 ++*decoded_options_count; | |
| 285 *decoded_options = XRESIZEVEC (struct cl_decoded_option, | |
| 286 *decoded_options, | |
| 287 *decoded_options_count); | |
| 288 generate_option (OPT_mmacosx_version_min_, vers_string, 1, CL_DRIVER, | |
| 289 &(*decoded_options)[*decoded_options_count - 1]); | |
| 290 } | |
| 291 } | |
| 292 /* Create and push the major version for assemblers that need it. */ | |
| 293 if (vers_string != NULL) | |
| 294 { | |
| 295 char *asm_major = NULL; | |
| 296 const char *first_period = strchr(vers_string, '.'); | |
| 297 if (first_period != NULL) | |
| 298 { | |
| 299 const char *second_period = strchr(first_period+1, '.'); | |
| 300 if (second_period != NULL) | |
| 301 asm_major = xstrndup (vers_string, second_period-vers_string); | |
| 302 else | |
| 303 asm_major = xstrdup (vers_string); | |
| 304 } | |
| 305 /* Else we appear to have a weird macosx version with no major number. | |
| 306 Punt on this for now. */ | |
| 307 if (asm_major != NULL) | |
| 308 { | |
| 309 ++*decoded_options_count; | |
| 310 *decoded_options = XRESIZEVEC (struct cl_decoded_option, | |
| 311 *decoded_options, | |
| 312 *decoded_options_count); | |
| 313 generate_option (OPT_asm_macosx_version_min_, asm_major, 1, CL_DRIVER, | |
| 314 &(*decoded_options)[*decoded_options_count - 1]); | |
| 315 } | |
| 316 } | |
|
67
f6334be47118
update gcc from gcc-4.6-20100522 to gcc-4.6-20110318
nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
317 } |