Ned Deily | df8aa2b | 2012-07-21 05:36:30 -0700 | [diff] [blame] | 1 | """Shared OS X support functions.""" |
| 2 | |
| 3 | import os |
| 4 | import re |
| 5 | import sys |
| 6 | |
| 7 | __all__ = [ |
| 8 | 'compiler_fixup', |
| 9 | 'customize_config_vars', |
| 10 | 'customize_compiler', |
| 11 | 'get_platform_osx', |
| 12 | ] |
| 13 | |
| 14 | # configuration variables that may contain universal build flags, |
| 15 | # like "-arch" or "-isdkroot", that may need customization for |
| 16 | # the user environment |
| 17 | _UNIVERSAL_CONFIG_VARS = ('CFLAGS', 'LDFLAGS', 'CPPFLAGS', 'BASECFLAGS', |
| 18 | 'BLDSHARED', 'LDSHARED', 'CC', 'CXX', |
| 19 | 'PY_CFLAGS', 'PY_LDFLAGS', 'PY_CPPFLAGS', |
stratakis | cf10a75 | 2018-12-19 18:19:01 +0100 | [diff] [blame] | 20 | 'PY_CORE_CFLAGS', 'PY_CORE_LDFLAGS') |
Ned Deily | df8aa2b | 2012-07-21 05:36:30 -0700 | [diff] [blame] | 21 | |
| 22 | # configuration variables that may contain compiler calls |
| 23 | _COMPILER_CONFIG_VARS = ('BLDSHARED', 'LDSHARED', 'CC', 'CXX') |
| 24 | |
| 25 | # prefix added to original configuration variable names |
| 26 | _INITPRE = '_OSX_SUPPORT_INITIAL_' |
| 27 | |
| 28 | |
| 29 | def _find_executable(executable, path=None): |
| 30 | """Tries to find 'executable' in the directories listed in 'path'. |
| 31 | |
| 32 | A string listing directories separated by 'os.pathsep'; defaults to |
| 33 | os.environ['PATH']. Returns the complete filename or None if not found. |
| 34 | """ |
| 35 | if path is None: |
| 36 | path = os.environ['PATH'] |
| 37 | |
| 38 | paths = path.split(os.pathsep) |
| 39 | base, ext = os.path.splitext(executable) |
| 40 | |
Jesus Cea | 4791a24 | 2012-10-05 03:15:39 +0200 | [diff] [blame] | 41 | if (sys.platform == 'win32') and (ext != '.exe'): |
Ned Deily | df8aa2b | 2012-07-21 05:36:30 -0700 | [diff] [blame] | 42 | executable = executable + '.exe' |
| 43 | |
| 44 | if not os.path.isfile(executable): |
| 45 | for p in paths: |
| 46 | f = os.path.join(p, executable) |
| 47 | if os.path.isfile(f): |
| 48 | # the file exists, we have a shot at spawn working |
| 49 | return f |
| 50 | return None |
| 51 | else: |
| 52 | return executable |
| 53 | |
| 54 | |
Ronald Oussoren | 404a719 | 2020-11-22 06:14:25 +0100 | [diff] [blame] | 55 | def _read_output(commandstring, capture_stderr=False): |
Ezio Melotti | 30b9d5d | 2013-08-17 15:50:46 +0300 | [diff] [blame] | 56 | """Output from successful command execution or None""" |
Ned Deily | df8aa2b | 2012-07-21 05:36:30 -0700 | [diff] [blame] | 57 | # Similar to os.popen(commandstring, "r").read(), |
| 58 | # but without actually using os.popen because that |
| 59 | # function is not usable during python bootstrap. |
| 60 | # tempfile is also not available then. |
| 61 | import contextlib |
| 62 | try: |
| 63 | import tempfile |
| 64 | fp = tempfile.NamedTemporaryFile() |
Brett Cannon | cd171c8 | 2013-07-04 17:43:24 -0400 | [diff] [blame] | 65 | except ImportError: |
Ned Deily | df8aa2b | 2012-07-21 05:36:30 -0700 | [diff] [blame] | 66 | fp = open("/tmp/_osx_support.%s"%( |
| 67 | os.getpid(),), "w+b") |
| 68 | |
| 69 | with contextlib.closing(fp) as fp: |
Ronald Oussoren | 404a719 | 2020-11-22 06:14:25 +0100 | [diff] [blame] | 70 | if capture_stderr: |
| 71 | cmd = "%s >'%s' 2>&1" % (commandstring, fp.name) |
| 72 | else: |
| 73 | cmd = "%s 2>/dev/null >'%s'" % (commandstring, fp.name) |
Ned Deily | df8aa2b | 2012-07-21 05:36:30 -0700 | [diff] [blame] | 74 | return fp.read().decode('utf-8').strip() if not os.system(cmd) else None |
| 75 | |
| 76 | |
| 77 | def _find_build_tool(toolname): |
| 78 | """Find a build tool on current path or using xcrun""" |
| 79 | return (_find_executable(toolname) |
| 80 | or _read_output("/usr/bin/xcrun -find %s" % (toolname,)) |
| 81 | or '' |
| 82 | ) |
| 83 | |
| 84 | _SYSTEM_VERSION = None |
| 85 | |
| 86 | def _get_system_version(): |
| 87 | """Return the OS X system version as a string""" |
| 88 | # Reading this plist is a documented way to get the system |
| 89 | # version (see the documentation for the Gestalt Manager) |
| 90 | # We avoid using platform.mac_ver to avoid possible bootstrap issues during |
| 91 | # the build of Python itself (distutils is used to build standard library |
| 92 | # extensions). |
| 93 | |
| 94 | global _SYSTEM_VERSION |
| 95 | |
| 96 | if _SYSTEM_VERSION is None: |
| 97 | _SYSTEM_VERSION = '' |
| 98 | try: |
| 99 | f = open('/System/Library/CoreServices/SystemVersion.plist') |
Andrew Svetlov | f7a17b4 | 2012-12-25 16:47:37 +0200 | [diff] [blame] | 100 | except OSError: |
Ned Deily | df8aa2b | 2012-07-21 05:36:30 -0700 | [diff] [blame] | 101 | # We're on a plain darwin box, fall back to the default |
| 102 | # behaviour. |
| 103 | pass |
| 104 | else: |
| 105 | try: |
| 106 | m = re.search(r'<key>ProductUserVisibleVersion</key>\s*' |
| 107 | r'<string>(.*?)</string>', f.read()) |
| 108 | finally: |
| 109 | f.close() |
| 110 | if m is not None: |
| 111 | _SYSTEM_VERSION = '.'.join(m.group(1).split('.')[:2]) |
| 112 | # else: fall back to the default behaviour |
| 113 | |
| 114 | return _SYSTEM_VERSION |
| 115 | |
Ronald Oussoren | 4176193 | 2020-11-08 10:05:27 +0100 | [diff] [blame] | 116 | _SYSTEM_VERSION_TUPLE = None |
| 117 | def _get_system_version_tuple(): |
| 118 | """ |
| 119 | Return the macOS system version as a tuple |
| 120 | |
| 121 | The return value is safe to use to compare |
| 122 | two version numbers. |
| 123 | """ |
| 124 | global _SYSTEM_VERSION_TUPLE |
| 125 | if _SYSTEM_VERSION_TUPLE is None: |
| 126 | osx_version = _get_system_version() |
| 127 | if osx_version: |
| 128 | try: |
| 129 | _SYSTEM_VERSION_TUPLE = tuple(int(i) for i in osx_version.split('.')) |
| 130 | except ValueError: |
| 131 | _SYSTEM_VERSION_TUPLE = () |
| 132 | |
| 133 | return _SYSTEM_VERSION_TUPLE |
Ronald Oussoren | 442746a | 2020-11-22 03:17:18 +0100 | [diff] [blame] | 134 | |
Ronald Oussoren | 4176193 | 2020-11-08 10:05:27 +0100 | [diff] [blame] | 135 | |
Ned Deily | df8aa2b | 2012-07-21 05:36:30 -0700 | [diff] [blame] | 136 | def _remove_original_values(_config_vars): |
| 137 | """Remove original unmodified values for testing""" |
| 138 | # This is needed for higher-level cross-platform tests of get_platform. |
| 139 | for k in list(_config_vars): |
| 140 | if k.startswith(_INITPRE): |
| 141 | del _config_vars[k] |
| 142 | |
| 143 | def _save_modified_value(_config_vars, cv, newvalue): |
| 144 | """Save modified and original unmodified value of configuration var""" |
| 145 | |
| 146 | oldvalue = _config_vars.get(cv, '') |
| 147 | if (oldvalue != newvalue) and (_INITPRE + cv not in _config_vars): |
| 148 | _config_vars[_INITPRE + cv] = oldvalue |
| 149 | _config_vars[cv] = newvalue |
| 150 | |
Ronald Oussoren | 404a719 | 2020-11-22 06:14:25 +0100 | [diff] [blame] | 151 | |
| 152 | _cache_default_sysroot = None |
| 153 | def _default_sysroot(cc): |
| 154 | """ Returns the root of the default SDK for this system, or '/' """ |
| 155 | global _cache_default_sysroot |
| 156 | |
| 157 | if _cache_default_sysroot is not None: |
| 158 | return _cache_default_sysroot |
| 159 | |
| 160 | contents = _read_output('%s -c -E -v - </dev/null' % (cc,), True) |
| 161 | in_incdirs = False |
| 162 | for line in contents.splitlines(): |
| 163 | if line.startswith("#include <...>"): |
| 164 | in_incdirs = True |
| 165 | elif line.startswith("End of search list"): |
| 166 | in_incdirs = False |
| 167 | elif in_incdirs: |
| 168 | line = line.strip() |
| 169 | if line == '/usr/include': |
| 170 | _cache_default_sysroot = '/' |
| 171 | elif line.endswith(".sdk/usr/include"): |
| 172 | _cache_default_sysroot = line[:-12] |
| 173 | if _cache_default_sysroot is None: |
| 174 | _cache_default_sysroot = '/' |
| 175 | |
| 176 | return _cache_default_sysroot |
| 177 | |
Ned Deily | df8aa2b | 2012-07-21 05:36:30 -0700 | [diff] [blame] | 178 | def _supports_universal_builds(): |
| 179 | """Returns True if universal builds are supported on this system""" |
| 180 | # As an approximation, we assume that if we are running on 10.4 or above, |
| 181 | # then we are running with an Xcode environment that supports universal |
| 182 | # builds, in particular -isysroot and -arch arguments to the compiler. This |
| 183 | # is in support of allowing 10.4 universal builds to run on 10.3.x systems. |
| 184 | |
Ronald Oussoren | 4176193 | 2020-11-08 10:05:27 +0100 | [diff] [blame] | 185 | osx_version = _get_system_version_tuple() |
Ned Deily | df8aa2b | 2012-07-21 05:36:30 -0700 | [diff] [blame] | 186 | return bool(osx_version >= (10, 4)) if osx_version else False |
| 187 | |
Ronald Oussoren | 4176193 | 2020-11-08 10:05:27 +0100 | [diff] [blame] | 188 | def _supports_arm64_builds(): |
| 189 | """Returns True if arm64 builds are supported on this system""" |
| 190 | # There are two sets of systems supporting macOS/arm64 builds: |
| 191 | # 1. macOS 11 and later, unconditionally |
| 192 | # 2. macOS 10.15 with Xcode 12.2 or later |
| 193 | # For now the second category is ignored. |
| 194 | osx_version = _get_system_version_tuple() |
| 195 | return osx_version >= (11, 0) if osx_version else False |
| 196 | |
Ned Deily | df8aa2b | 2012-07-21 05:36:30 -0700 | [diff] [blame] | 197 | |
| 198 | def _find_appropriate_compiler(_config_vars): |
| 199 | """Find appropriate C compiler for extension module builds""" |
| 200 | |
| 201 | # Issue #13590: |
| 202 | # The OSX location for the compiler varies between OSX |
| 203 | # (or rather Xcode) releases. With older releases (up-to 10.5) |
| 204 | # the compiler is in /usr/bin, with newer releases the compiler |
| 205 | # can only be found inside Xcode.app if the "Command Line Tools" |
| 206 | # are not installed. |
| 207 | # |
Martin Panter | 46f5072 | 2016-05-26 05:35:26 +0000 | [diff] [blame] | 208 | # Furthermore, the compiler that can be used varies between |
Ezio Melotti | 30b9d5d | 2013-08-17 15:50:46 +0300 | [diff] [blame] | 209 | # Xcode releases. Up to Xcode 4 it was possible to use 'gcc-4.2' |
Ned Deily | df8aa2b | 2012-07-21 05:36:30 -0700 | [diff] [blame] | 210 | # as the compiler, after that 'clang' should be used because |
| 211 | # gcc-4.2 is either not present, or a copy of 'llvm-gcc' that |
| 212 | # miscompiles Python. |
| 213 | |
Martin Panter | e26da7c | 2016-06-02 10:07:09 +0000 | [diff] [blame] | 214 | # skip checks if the compiler was overridden with a CC env variable |
Ned Deily | df8aa2b | 2012-07-21 05:36:30 -0700 | [diff] [blame] | 215 | if 'CC' in os.environ: |
| 216 | return _config_vars |
| 217 | |
| 218 | # The CC config var might contain additional arguments. |
| 219 | # Ignore them while searching. |
| 220 | cc = oldcc = _config_vars['CC'].split()[0] |
| 221 | if not _find_executable(cc): |
| 222 | # Compiler is not found on the shell search PATH. |
| 223 | # Now search for clang, first on PATH (if the Command LIne |
| 224 | # Tools have been installed in / or if the user has provided |
| 225 | # another location via CC). If not found, try using xcrun |
| 226 | # to find an uninstalled clang (within a selected Xcode). |
| 227 | |
| 228 | # NOTE: Cannot use subprocess here because of bootstrap |
| 229 | # issues when building Python itself (and os.popen is |
| 230 | # implemented on top of subprocess and is therefore not |
| 231 | # usable as well) |
| 232 | |
| 233 | cc = _find_build_tool('clang') |
| 234 | |
| 235 | elif os.path.basename(cc).startswith('gcc'): |
| 236 | # Compiler is GCC, check if it is LLVM-GCC |
| 237 | data = _read_output("'%s' --version" |
| 238 | % (cc.replace("'", "'\"'\"'"),)) |
Ned Deily | f31b478 | 2014-04-19 13:25:29 -0700 | [diff] [blame] | 239 | if data and 'llvm-gcc' in data: |
Ned Deily | df8aa2b | 2012-07-21 05:36:30 -0700 | [diff] [blame] | 240 | # Found LLVM-GCC, fall back to clang |
| 241 | cc = _find_build_tool('clang') |
| 242 | |
| 243 | if not cc: |
| 244 | raise SystemError( |
| 245 | "Cannot locate working compiler") |
| 246 | |
| 247 | if cc != oldcc: |
| 248 | # Found a replacement compiler. |
Ezio Melotti | 30b9d5d | 2013-08-17 15:50:46 +0300 | [diff] [blame] | 249 | # Modify config vars using new compiler, if not already explicitly |
Martin Panter | e26da7c | 2016-06-02 10:07:09 +0000 | [diff] [blame] | 250 | # overridden by an env variable, preserving additional arguments. |
Ned Deily | df8aa2b | 2012-07-21 05:36:30 -0700 | [diff] [blame] | 251 | for cv in _COMPILER_CONFIG_VARS: |
| 252 | if cv in _config_vars and cv not in os.environ: |
| 253 | cv_split = _config_vars[cv].split() |
| 254 | cv_split[0] = cc if cv != 'CXX' else cc + '++' |
| 255 | _save_modified_value(_config_vars, cv, ' '.join(cv_split)) |
| 256 | |
| 257 | return _config_vars |
| 258 | |
| 259 | |
| 260 | def _remove_universal_flags(_config_vars): |
| 261 | """Remove all universal build arguments from config vars""" |
| 262 | |
| 263 | for cv in _UNIVERSAL_CONFIG_VARS: |
Martin Panter | e26da7c | 2016-06-02 10:07:09 +0000 | [diff] [blame] | 264 | # Do not alter a config var explicitly overridden by env var |
Ned Deily | df8aa2b | 2012-07-21 05:36:30 -0700 | [diff] [blame] | 265 | if cv in _config_vars and cv not in os.environ: |
| 266 | flags = _config_vars[cv] |
Jack McCracken | ce040f6 | 2017-04-14 08:28:55 -0400 | [diff] [blame] | 267 | flags = re.sub(r'-arch\s+\w+\s', ' ', flags, flags=re.ASCII) |
Joshua Root | b310700 | 2020-04-22 17:44:10 +1000 | [diff] [blame] | 268 | flags = re.sub(r'-isysroot\s*\S+', ' ', flags) |
Ned Deily | df8aa2b | 2012-07-21 05:36:30 -0700 | [diff] [blame] | 269 | _save_modified_value(_config_vars, cv, flags) |
| 270 | |
| 271 | return _config_vars |
| 272 | |
| 273 | |
| 274 | def _remove_unsupported_archs(_config_vars): |
| 275 | """Remove any unsupported archs from config vars""" |
| 276 | # Different Xcode releases support different sets for '-arch' |
| 277 | # flags. In particular, Xcode 4.x no longer supports the |
| 278 | # PPC architectures. |
| 279 | # |
| 280 | # This code automatically removes '-arch ppc' and '-arch ppc64' |
| 281 | # when these are not supported. That makes it possible to |
| 282 | # build extensions on OSX 10.7 and later with the prebuilt |
| 283 | # 32-bit installer on the python.org website. |
| 284 | |
Martin Panter | e26da7c | 2016-06-02 10:07:09 +0000 | [diff] [blame] | 285 | # skip checks if the compiler was overridden with a CC env variable |
Ned Deily | df8aa2b | 2012-07-21 05:36:30 -0700 | [diff] [blame] | 286 | if 'CC' in os.environ: |
| 287 | return _config_vars |
| 288 | |
R David Murray | 44b548d | 2016-09-08 13:59:53 -0400 | [diff] [blame] | 289 | if re.search(r'-arch\s+ppc', _config_vars['CFLAGS']) is not None: |
Ned Deily | df8aa2b | 2012-07-21 05:36:30 -0700 | [diff] [blame] | 290 | # NOTE: Cannot use subprocess here because of bootstrap |
| 291 | # issues when building Python itself |
Ned Deily | 87adb6e | 2013-10-18 21:09:56 -0700 | [diff] [blame] | 292 | status = os.system( |
| 293 | """echo 'int main{};' | """ |
| 294 | """'%s' -c -arch ppc -x c -o /dev/null /dev/null 2>/dev/null""" |
| 295 | %(_config_vars['CC'].replace("'", "'\"'\"'"),)) |
| 296 | if status: |
| 297 | # The compile failed for some reason. Because of differences |
| 298 | # across Xcode and compiler versions, there is no reliable way |
| 299 | # to be sure why it failed. Assume here it was due to lack of |
| 300 | # PPC support and remove the related '-arch' flags from each |
Martin Panter | e26da7c | 2016-06-02 10:07:09 +0000 | [diff] [blame] | 301 | # config variables not explicitly overridden by an environment |
Ned Deily | 87adb6e | 2013-10-18 21:09:56 -0700 | [diff] [blame] | 302 | # variable. If the error was for some other reason, we hope the |
| 303 | # failure will show up again when trying to compile an extension |
| 304 | # module. |
Ned Deily | df8aa2b | 2012-07-21 05:36:30 -0700 | [diff] [blame] | 305 | for cv in _UNIVERSAL_CONFIG_VARS: |
| 306 | if cv in _config_vars and cv not in os.environ: |
| 307 | flags = _config_vars[cv] |
R David Murray | 44b548d | 2016-09-08 13:59:53 -0400 | [diff] [blame] | 308 | flags = re.sub(r'-arch\s+ppc\w*\s', ' ', flags) |
Ned Deily | df8aa2b | 2012-07-21 05:36:30 -0700 | [diff] [blame] | 309 | _save_modified_value(_config_vars, cv, flags) |
| 310 | |
| 311 | return _config_vars |
| 312 | |
| 313 | |
| 314 | def _override_all_archs(_config_vars): |
| 315 | """Allow override of all archs with ARCHFLAGS env var""" |
| 316 | # NOTE: This name was introduced by Apple in OSX 10.5 and |
| 317 | # is used by several scripting languages distributed with |
| 318 | # that OS release. |
| 319 | if 'ARCHFLAGS' in os.environ: |
| 320 | arch = os.environ['ARCHFLAGS'] |
| 321 | for cv in _UNIVERSAL_CONFIG_VARS: |
| 322 | if cv in _config_vars and '-arch' in _config_vars[cv]: |
| 323 | flags = _config_vars[cv] |
R David Murray | 44b548d | 2016-09-08 13:59:53 -0400 | [diff] [blame] | 324 | flags = re.sub(r'-arch\s+\w+\s', ' ', flags) |
Ned Deily | df8aa2b | 2012-07-21 05:36:30 -0700 | [diff] [blame] | 325 | flags = flags + ' ' + arch |
| 326 | _save_modified_value(_config_vars, cv, flags) |
| 327 | |
| 328 | return _config_vars |
| 329 | |
| 330 | |
| 331 | def _check_for_unavailable_sdk(_config_vars): |
| 332 | """Remove references to any SDKs not available""" |
| 333 | # If we're on OSX 10.5 or later and the user tries to |
| 334 | # compile an extension using an SDK that is not present |
| 335 | # on the current machine it is better to not use an SDK |
| 336 | # than to fail. This is particularly important with |
Ezio Melotti | 30b9d5d | 2013-08-17 15:50:46 +0300 | [diff] [blame] | 337 | # the standalone Command Line Tools alternative to a |
Ned Deily | df8aa2b | 2012-07-21 05:36:30 -0700 | [diff] [blame] | 338 | # full-blown Xcode install since the CLT packages do not |
| 339 | # provide SDKs. If the SDK is not present, it is assumed |
| 340 | # that the header files and dev libs have been installed |
| 341 | # to /usr and /System/Library by either a standalone CLT |
| 342 | # package or the CLT component within Xcode. |
| 343 | cflags = _config_vars.get('CFLAGS', '') |
Joshua Root | b310700 | 2020-04-22 17:44:10 +1000 | [diff] [blame] | 344 | m = re.search(r'-isysroot\s*(\S+)', cflags) |
Ned Deily | df8aa2b | 2012-07-21 05:36:30 -0700 | [diff] [blame] | 345 | if m is not None: |
| 346 | sdk = m.group(1) |
| 347 | if not os.path.exists(sdk): |
| 348 | for cv in _UNIVERSAL_CONFIG_VARS: |
Martin Panter | e26da7c | 2016-06-02 10:07:09 +0000 | [diff] [blame] | 349 | # Do not alter a config var explicitly overridden by env var |
Ned Deily | df8aa2b | 2012-07-21 05:36:30 -0700 | [diff] [blame] | 350 | if cv in _config_vars and cv not in os.environ: |
| 351 | flags = _config_vars[cv] |
Joshua Root | b310700 | 2020-04-22 17:44:10 +1000 | [diff] [blame] | 352 | flags = re.sub(r'-isysroot\s*\S+(?:\s|$)', ' ', flags) |
Ned Deily | df8aa2b | 2012-07-21 05:36:30 -0700 | [diff] [blame] | 353 | _save_modified_value(_config_vars, cv, flags) |
| 354 | |
| 355 | return _config_vars |
| 356 | |
| 357 | |
| 358 | def compiler_fixup(compiler_so, cc_args): |
| 359 | """ |
| 360 | This function will strip '-isysroot PATH' and '-arch ARCH' from the |
| 361 | compile flags if the user has specified one them in extra_compile_flags. |
| 362 | |
| 363 | This is needed because '-arch ARCH' adds another architecture to the |
| 364 | build, without a way to remove an architecture. Furthermore GCC will |
| 365 | barf if multiple '-isysroot' arguments are present. |
| 366 | """ |
| 367 | stripArch = stripSysroot = False |
| 368 | |
| 369 | compiler_so = list(compiler_so) |
| 370 | |
| 371 | if not _supports_universal_builds(): |
| 372 | # OSX before 10.4.0, these don't support -arch and -isysroot at |
| 373 | # all. |
| 374 | stripArch = stripSysroot = True |
| 375 | else: |
| 376 | stripArch = '-arch' in cc_args |
Joshua Root | b310700 | 2020-04-22 17:44:10 +1000 | [diff] [blame] | 377 | stripSysroot = any(arg for arg in cc_args if arg.startswith('-isysroot')) |
Ned Deily | df8aa2b | 2012-07-21 05:36:30 -0700 | [diff] [blame] | 378 | |
| 379 | if stripArch or 'ARCHFLAGS' in os.environ: |
| 380 | while True: |
| 381 | try: |
| 382 | index = compiler_so.index('-arch') |
| 383 | # Strip this argument and the next one: |
| 384 | del compiler_so[index:index+2] |
| 385 | except ValueError: |
| 386 | break |
| 387 | |
Ronald Oussoren | 4176193 | 2020-11-08 10:05:27 +0100 | [diff] [blame] | 388 | elif not _supports_arm64_builds(): |
| 389 | # Look for "-arch arm64" and drop that |
Ronald Oussoren | 442746a | 2020-11-22 03:17:18 +0100 | [diff] [blame] | 390 | for idx in reversed(range(len(compiler_so))): |
Ronald Oussoren | 4176193 | 2020-11-08 10:05:27 +0100 | [diff] [blame] | 391 | if compiler_so[idx] == '-arch' and compiler_so[idx+1] == "arm64": |
| 392 | del compiler_so[idx:idx+2] |
| 393 | |
Ned Deily | df8aa2b | 2012-07-21 05:36:30 -0700 | [diff] [blame] | 394 | if 'ARCHFLAGS' in os.environ and not stripArch: |
| 395 | # User specified different -arch flags in the environ, |
| 396 | # see also distutils.sysconfig |
| 397 | compiler_so = compiler_so + os.environ['ARCHFLAGS'].split() |
| 398 | |
| 399 | if stripSysroot: |
| 400 | while True: |
Joshua Root | b310700 | 2020-04-22 17:44:10 +1000 | [diff] [blame] | 401 | indices = [i for i,x in enumerate(compiler_so) if x.startswith('-isysroot')] |
| 402 | if not indices: |
| 403 | break |
| 404 | index = indices[0] |
| 405 | if compiler_so[index] == '-isysroot': |
Ned Deily | df8aa2b | 2012-07-21 05:36:30 -0700 | [diff] [blame] | 406 | # Strip this argument and the next one: |
| 407 | del compiler_so[index:index+2] |
Joshua Root | b310700 | 2020-04-22 17:44:10 +1000 | [diff] [blame] | 408 | else: |
| 409 | # It's '-isysroot/some/path' in one arg |
| 410 | del compiler_so[index:index+1] |
Ned Deily | df8aa2b | 2012-07-21 05:36:30 -0700 | [diff] [blame] | 411 | |
| 412 | # Check if the SDK that is used during compilation actually exists, |
| 413 | # the universal build requires the usage of a universal SDK and not all |
| 414 | # users have that installed by default. |
| 415 | sysroot = None |
Joshua Root | b310700 | 2020-04-22 17:44:10 +1000 | [diff] [blame] | 416 | argvar = cc_args |
| 417 | indices = [i for i,x in enumerate(cc_args) if x.startswith('-isysroot')] |
| 418 | if not indices: |
| 419 | argvar = compiler_so |
| 420 | indices = [i for i,x in enumerate(compiler_so) if x.startswith('-isysroot')] |
| 421 | |
| 422 | for idx in indices: |
| 423 | if argvar[idx] == '-isysroot': |
| 424 | sysroot = argvar[idx+1] |
| 425 | break |
| 426 | else: |
| 427 | sysroot = argvar[idx][len('-isysroot'):] |
| 428 | break |
Ned Deily | df8aa2b | 2012-07-21 05:36:30 -0700 | [diff] [blame] | 429 | |
| 430 | if sysroot and not os.path.isdir(sysroot): |
| 431 | from distutils import log |
| 432 | log.warn("Compiling with an SDK that doesn't seem to exist: %s", |
| 433 | sysroot) |
| 434 | log.warn("Please check your Xcode installation") |
| 435 | |
| 436 | return compiler_so |
| 437 | |
| 438 | |
| 439 | def customize_config_vars(_config_vars): |
| 440 | """Customize Python build configuration variables. |
| 441 | |
| 442 | Called internally from sysconfig with a mutable mapping |
| 443 | containing name/value pairs parsed from the configured |
| 444 | makefile used to build this interpreter. Returns |
| 445 | the mapping updated as needed to reflect the environment |
| 446 | in which the interpreter is running; in the case of |
| 447 | a Python from a binary installer, the installed |
| 448 | environment may be very different from the build |
| 449 | environment, i.e. different OS levels, different |
| 450 | built tools, different available CPU architectures. |
| 451 | |
| 452 | This customization is performed whenever |
| 453 | distutils.sysconfig.get_config_vars() is first |
| 454 | called. It may be used in environments where no |
| 455 | compilers are present, i.e. when installing pure |
| 456 | Python dists. Customization of compiler paths |
| 457 | and detection of unavailable archs is deferred |
Ezio Melotti | 30b9d5d | 2013-08-17 15:50:46 +0300 | [diff] [blame] | 458 | until the first extension module build is |
Ned Deily | df8aa2b | 2012-07-21 05:36:30 -0700 | [diff] [blame] | 459 | requested (in distutils.sysconfig.customize_compiler). |
| 460 | |
| 461 | Currently called from distutils.sysconfig |
| 462 | """ |
| 463 | |
| 464 | if not _supports_universal_builds(): |
| 465 | # On Mac OS X before 10.4, check if -arch and -isysroot |
| 466 | # are in CFLAGS or LDFLAGS and remove them if they are. |
| 467 | # This is needed when building extensions on a 10.3 system |
| 468 | # using a universal build of python. |
| 469 | _remove_universal_flags(_config_vars) |
| 470 | |
| 471 | # Allow user to override all archs with ARCHFLAGS env var |
| 472 | _override_all_archs(_config_vars) |
| 473 | |
| 474 | # Remove references to sdks that are not found |
| 475 | _check_for_unavailable_sdk(_config_vars) |
| 476 | |
| 477 | return _config_vars |
| 478 | |
| 479 | |
| 480 | def customize_compiler(_config_vars): |
| 481 | """Customize compiler path and configuration variables. |
| 482 | |
| 483 | This customization is performed when the first |
| 484 | extension module build is requested |
| 485 | in distutils.sysconfig.customize_compiler). |
| 486 | """ |
| 487 | |
| 488 | # Find a compiler to use for extension module builds |
| 489 | _find_appropriate_compiler(_config_vars) |
| 490 | |
| 491 | # Remove ppc arch flags if not supported here |
| 492 | _remove_unsupported_archs(_config_vars) |
| 493 | |
| 494 | # Allow user to override all archs with ARCHFLAGS env var |
| 495 | _override_all_archs(_config_vars) |
| 496 | |
| 497 | return _config_vars |
| 498 | |
| 499 | |
| 500 | def get_platform_osx(_config_vars, osname, release, machine): |
| 501 | """Filter values for get_platform()""" |
| 502 | # called from get_platform() in sysconfig and distutils.util |
| 503 | # |
| 504 | # For our purposes, we'll assume that the system version from |
| 505 | # distutils' perspective is what MACOSX_DEPLOYMENT_TARGET is set |
| 506 | # to. This makes the compatibility story a bit more sane because the |
| 507 | # machine is going to compile and link as if it were |
| 508 | # MACOSX_DEPLOYMENT_TARGET. |
| 509 | |
| 510 | macver = _config_vars.get('MACOSX_DEPLOYMENT_TARGET', '') |
| 511 | macrelease = _get_system_version() or macver |
| 512 | macver = macver or macrelease |
| 513 | |
| 514 | if macver: |
| 515 | release = macver |
| 516 | osname = "macosx" |
| 517 | |
| 518 | # Use the original CFLAGS value, if available, so that we |
| 519 | # return the same machine type for the platform string. |
| 520 | # Otherwise, distutils may consider this a cross-compiling |
| 521 | # case and disallow installs. |
| 522 | cflags = _config_vars.get(_INITPRE+'CFLAGS', |
| 523 | _config_vars.get('CFLAGS', '')) |
Ned Deily | 04cdfa1 | 2014-06-25 13:36:14 -0700 | [diff] [blame] | 524 | if macrelease: |
| 525 | try: |
| 526 | macrelease = tuple(int(i) for i in macrelease.split('.')[0:2]) |
| 527 | except ValueError: |
| 528 | macrelease = (10, 0) |
| 529 | else: |
| 530 | # assume no universal support |
| 531 | macrelease = (10, 0) |
| 532 | |
| 533 | if (macrelease >= (10, 4)) and '-arch' in cflags.strip(): |
Ned Deily | df8aa2b | 2012-07-21 05:36:30 -0700 | [diff] [blame] | 534 | # The universal build will build fat binaries, but not on |
| 535 | # systems before 10.4 |
| 536 | |
| 537 | machine = 'fat' |
| 538 | |
R David Murray | 44b548d | 2016-09-08 13:59:53 -0400 | [diff] [blame] | 539 | archs = re.findall(r'-arch\s+(\S+)', cflags) |
Ned Deily | df8aa2b | 2012-07-21 05:36:30 -0700 | [diff] [blame] | 540 | archs = tuple(sorted(set(archs))) |
| 541 | |
| 542 | if len(archs) == 1: |
| 543 | machine = archs[0] |
Ronald Oussoren | 4176193 | 2020-11-08 10:05:27 +0100 | [diff] [blame] | 544 | elif archs == ('arm64', 'x86_64'): |
| 545 | machine = 'universal2' |
Ned Deily | df8aa2b | 2012-07-21 05:36:30 -0700 | [diff] [blame] | 546 | elif archs == ('i386', 'ppc'): |
| 547 | machine = 'fat' |
| 548 | elif archs == ('i386', 'x86_64'): |
| 549 | machine = 'intel' |
| 550 | elif archs == ('i386', 'ppc', 'x86_64'): |
| 551 | machine = 'fat3' |
| 552 | elif archs == ('ppc64', 'x86_64'): |
| 553 | machine = 'fat64' |
| 554 | elif archs == ('i386', 'ppc', 'ppc64', 'x86_64'): |
| 555 | machine = 'universal' |
| 556 | else: |
| 557 | raise ValueError( |
| 558 | "Don't know machine value for archs=%r" % (archs,)) |
| 559 | |
| 560 | elif machine == 'i386': |
| 561 | # On OSX the machine type returned by uname is always the |
| 562 | # 32-bit variant, even if the executable architecture is |
| 563 | # the 64-bit variant |
| 564 | if sys.maxsize >= 2**32: |
| 565 | machine = 'x86_64' |
| 566 | |
| 567 | elif machine in ('PowerPC', 'Power_Macintosh'): |
| 568 | # Pick a sane name for the PPC architecture. |
| 569 | # See 'i386' case |
| 570 | if sys.maxsize >= 2**32: |
| 571 | machine = 'ppc64' |
| 572 | else: |
| 573 | machine = 'ppc' |
| 574 | |
| 575 | return (osname, release, machine) |