1import itertools 2import os 3import platform 4import re 5import subprocess 6import sys 7import errno 8 9import lit.util 10from lit.llvm.subst import FindTool 11from lit.llvm.subst import ToolSubst 12 13lit_path_displayed = False 14 15class LLVMConfig(object): 16 17 def __init__(self, lit_config, config): 18 self.lit_config = lit_config 19 self.config = config 20 21 features = config.available_features 22 23 self.use_lit_shell = False 24 # Tweak PATH for Win32 to decide to use bash.exe or not. 25 if sys.platform == 'win32': 26 # Seek necessary tools in directories and set to $PATH. 27 path = None 28 lit_tools_dir = getattr(config, 'lit_tools_dir', None) 29 required_tools = [ 30 'cmp.exe', 'grep.exe', 'sed.exe', 'diff.exe', 'echo.exe'] 31 path = self.lit_config.getToolsPath(lit_tools_dir, 32 config.environment['PATH'], 33 required_tools) 34 if path is None: 35 path = self._find_git_windows_unix_tools(required_tools) 36 if path is not None: 37 self.with_environment('PATH', path, append_path=True) 38 # Many tools behave strangely if these environment variables aren't 39 # set. 40 self.with_system_environment( 41 ['SystemDrive', 'SystemRoot', 'TEMP', 'TMP', 'PLATFORM']) 42 self.use_lit_shell = True 43 44 global lit_path_displayed 45 if not self.lit_config.quiet and lit_path_displayed is False: 46 self.lit_config.note("using lit tools: {}".format(path)) 47 lit_path_displayed = True 48 49 # Choose between lit's internal shell pipeline runner and a real shell. 50 # If LIT_USE_INTERNAL_SHELL is in the environment, we use that as an 51 # override. 52 lit_shell_env = os.environ.get('LIT_USE_INTERNAL_SHELL') 53 if lit_shell_env: 54 self.use_lit_shell = lit.util.pythonize_bool(lit_shell_env) 55 56 if not self.use_lit_shell: 57 features.add('shell') 58 59 self.with_system_environment([ 60 'ASAN_SYMBOLIZER_PATH', 61 'MSAN_SYMBOLIZER_PATH', 62 'TSAN_SYMBOLIZER_PATH', 63 'UBSAN_SYMBOLIZER_PATH' 64 'ASAN_OPTIONS', 65 'MSAN_OPTIONS', 66 'TSAN_OPTIONS', 67 'UBSAN_OPTIONS', 68 ]) 69 70 # Running on Darwin OS 71 if platform.system() == 'Darwin': 72 # FIXME: lld uses the first, other projects use the second. 73 # We should standardize on the former. 74 features.add('system-linker-mach-o') 75 features.add('system-darwin') 76 elif platform.system() == 'Windows': 77 # For tests that require Windows to run. 78 features.add('system-windows') 79 elif platform.system() == 'Linux': 80 features.add('system-linux') 81 elif platform.system() in ['FreeBSD']: 82 features.add('system-freebsd') 83 elif platform.system() == 'NetBSD': 84 features.add('system-netbsd') 85 elif platform.system() == 'AIX': 86 features.add('system-aix') 87 elif platform.system() == 'SunOS': 88 features.add('system-solaris') 89 90 # Native compilation: host arch == default triple arch 91 # Both of these values should probably be in every site config (e.g. as 92 # part of the standard header. But currently they aren't) 93 host_triple = getattr(config, 'host_triple', None) 94 target_triple = getattr(config, 'target_triple', None) 95 if host_triple and host_triple == target_triple: 96 features.add('native') 97 98 # Sanitizers. 99 sanitizers = getattr(config, 'llvm_use_sanitizer', '') 100 sanitizers = frozenset(x.lower() for x in sanitizers.split(';')) 101 if 'address' in sanitizers: 102 features.add('asan') 103 if 'memory' in sanitizers or 'memorywithorigins' in sanitizers: 104 features.add('msan') 105 if 'undefined' in sanitizers: 106 features.add('ubsan') 107 108 have_zlib = getattr(config, 'have_zlib', None) 109 if have_zlib: 110 features.add('zlib') 111 112 # Check if we should run long running tests. 113 long_tests = lit_config.params.get('run_long_tests', None) 114 if lit.util.pythonize_bool(long_tests): 115 features.add('long_tests') 116 117 if target_triple: 118 if re.match(r'^x86_64.*-apple', target_triple): 119 features.add('x86_64-apple') 120 host_cxx = getattr(config, 'host_cxx', None) 121 if ('address' in sanitizers and 122 self.get_clang_has_lsan(host_cxx, target_triple)): 123 self.with_environment( 124 'ASAN_OPTIONS', 'detect_leaks=1', append_path=True) 125 if re.match(r'^x86_64.*-linux', target_triple): 126 features.add('x86_64-linux') 127 if re.match(r'^i.86.*', target_triple): 128 features.add('target-x86') 129 elif re.match(r'^x86_64.*', target_triple): 130 features.add('target-x86_64') 131 elif re.match(r'^aarch64.*', target_triple): 132 features.add('target-aarch64') 133 elif re.match(r'^arm64.*', target_triple): 134 features.add('target-aarch64') 135 elif re.match(r'^arm.*', target_triple): 136 features.add('target-arm') 137 138 use_gmalloc = lit_config.params.get('use_gmalloc', None) 139 if lit.util.pythonize_bool(use_gmalloc): 140 # Allow use of an explicit path for gmalloc library. 141 # Will default to '/usr/lib/libgmalloc.dylib' if not set. 142 gmalloc_path_str = lit_config.params.get( 143 'gmalloc_path', '/usr/lib/libgmalloc.dylib') 144 if gmalloc_path_str is not None: 145 self.with_environment( 146 'DYLD_INSERT_LIBRARIES', gmalloc_path_str) 147 148 def _find_git_windows_unix_tools(self, tools_needed): 149 assert(sys.platform == 'win32') 150 if sys.version_info.major >= 3: 151 import winreg 152 else: 153 import _winreg as winreg 154 155 # Search both the 64 and 32-bit hives, as well as HKLM + HKCU 156 masks = [0, winreg.KEY_WOW64_64KEY] 157 hives = [winreg.HKEY_LOCAL_MACHINE, winreg.HKEY_CURRENT_USER] 158 for mask, hive in itertools.product(masks, hives): 159 try: 160 with winreg.OpenKey(hive, r"SOFTWARE\GitForWindows", 0, 161 winreg.KEY_READ | mask) as key: 162 install_root, _ = winreg.QueryValueEx(key, 'InstallPath') 163 164 if not install_root: 165 continue 166 candidate_path = os.path.join(install_root, 'usr', 'bin') 167 if not lit.util.checkToolsPath( 168 candidate_path, tools_needed): 169 continue 170 171 # We found it, stop enumerating. 172 return lit.util.to_string(candidate_path) 173 except: 174 continue 175 176 return None 177 178 def with_environment(self, variable, value, append_path=False): 179 if append_path: 180 # For paths, we should be able to take a list of them and process 181 # all of them. 182 paths_to_add = value 183 if lit.util.is_string(paths_to_add): 184 paths_to_add = [paths_to_add] 185 186 def norm(x): 187 return os.path.normcase(os.path.normpath(x)) 188 189 current_paths = self.config.environment.get(variable, None) 190 if current_paths: 191 current_paths = current_paths.split(os.path.pathsep) 192 paths = [norm(p) for p in current_paths] 193 else: 194 paths = [] 195 196 # If we are passed a list [a b c], then iterating this list forwards 197 # and adding each to the beginning would result in c b a. So we 198 # need to iterate in reverse to end up with the original ordering. 199 for p in reversed(paths_to_add): 200 # Move it to the front if it already exists, otherwise insert 201 # it at the beginning. 202 p = norm(p) 203 try: 204 paths.remove(p) 205 except ValueError: 206 pass 207 paths = [p] + paths 208 value = os.pathsep.join(paths) 209 self.config.environment[variable] = value 210 211 def with_system_environment(self, variables, append_path=False): 212 if lit.util.is_string(variables): 213 variables = [variables] 214 for v in variables: 215 value = os.environ.get(v) 216 if value: 217 self.with_environment(v, value, append_path) 218 219 def clear_environment(self, variables): 220 for name in variables: 221 if name in self.config.environment: 222 del self.config.environment[name] 223 224 def get_process_output(self, command): 225 try: 226 cmd = subprocess.Popen( 227 command, stdout=subprocess.PIPE, 228 stderr=subprocess.PIPE, env=self.config.environment) 229 stdout, stderr = cmd.communicate() 230 stdout = lit.util.to_string(stdout) 231 stderr = lit.util.to_string(stderr) 232 return (stdout, stderr) 233 except OSError: 234 self.lit_config.fatal('Could not run process %s' % command) 235 236 def feature_config(self, features): 237 # Ask llvm-config about the specified feature. 238 arguments = [x for (x, _) in features] 239 config_path = os.path.join(self.config.llvm_tools_dir, 'llvm-config') 240 241 output, _ = self.get_process_output([config_path] + arguments) 242 lines = output.split('\n') 243 244 for (feature_line, (_, patterns)) in zip(lines, features): 245 # We should have either a callable or a dictionary. If it's a 246 # dictionary, grep each key against the output and use the value if 247 # it matches. If it's a callable, it does the entire translation. 248 if callable(patterns): 249 features_to_add = patterns(feature_line) 250 self.config.available_features.update(features_to_add) 251 else: 252 for (re_pattern, feature) in patterns.items(): 253 if re.search(re_pattern, feature_line): 254 self.config.available_features.add(feature) 255 256 # Note that when substituting %clang_cc1 also fill in the include directory 257 # of the builtin headers. Those are part of even a freestanding 258 # environment, but Clang relies on the driver to locate them. 259 def get_clang_builtin_include_dir(self, clang): 260 # FIXME: Rather than just getting the version, we should have clang 261 # print out its resource dir here in an easy to scrape form. 262 clang_dir, _ = self.get_process_output( 263 [clang, '-print-file-name=include']) 264 265 if not clang_dir: 266 print(clang) 267 self.lit_config.fatal( 268 "Couldn't find the include dir for Clang ('%s')" % clang) 269 270 clang_dir = clang_dir.strip() 271 if sys.platform in ['win32'] and not self.use_lit_shell: 272 # Don't pass dosish path separator to msys bash.exe. 273 clang_dir = clang_dir.replace('\\', '/') 274 # Ensure the result is an ascii string, across Python2.5+ - Python3. 275 return clang_dir 276 277 # On macOS, LSan is only supported on clang versions 5 and higher 278 def get_clang_has_lsan(self, clang, triple): 279 if not clang: 280 self.lit_config.warning( 281 'config.host_cxx is unset but test suite is configured ' 282 'to use sanitizers.') 283 return False 284 285 clang_binary = clang.split()[0] 286 version_string, _ = self.get_process_output( 287 [clang_binary, '--version']) 288 if not 'clang' in version_string: 289 self.lit_config.warning( 290 "compiler '%s' does not appear to be clang, " % clang_binary + 291 'but test suite is configured to use sanitizers.') 292 return False 293 294 if re.match(r'.*-linux', triple): 295 return True 296 297 if re.match(r'^x86_64.*-apple', triple): 298 version_regex = re.search(r'version ([0-9]+)\.([0-9]+).([0-9]+)', 299 version_string) 300 major_version_number = int(version_regex.group(1)) 301 minor_version_number = int(version_regex.group(2)) 302 patch_version_number = int(version_regex.group(3)) 303 if ('Apple LLVM' in version_string or 304 'Apple clang' in version_string): 305 # Apple clang doesn't yet support LSan 306 return False 307 return major_version_number >= 5 308 309 return False 310 311 def make_itanium_abi_triple(self, triple): 312 m = re.match(r'(\w+)-(\w+)-(\w+)', triple) 313 if not m: 314 self.lit_config.fatal( 315 "Could not turn '%s' into Itanium ABI triple" % triple) 316 if m.group(3).lower() != 'windows': 317 # All non-windows triples use the Itanium ABI. 318 return triple 319 return m.group(1) + '-' + m.group(2) + '-' + m.group(3) + '-gnu' 320 321 def make_msabi_triple(self, triple): 322 m = re.match(r'(\w+)-(\w+)-(\w+)', triple) 323 if not m: 324 self.lit_config.fatal( 325 "Could not turn '%s' into MS ABI triple" % triple) 326 isa = m.group(1).lower() 327 vendor = m.group(2).lower() 328 os = m.group(3).lower() 329 if os == 'windows' and re.match(r'.*-msvc$', triple): 330 # If the OS is windows and environment is msvc, we're done. 331 return triple 332 if isa.startswith('x86') or isa == 'amd64' or re.match(r'i\d86', isa): 333 # For x86 ISAs, adjust the OS. 334 return isa + '-' + vendor + '-windows-msvc' 335 # -msvc is not supported for non-x86 targets; use a default. 336 return 'i686-pc-windows-msvc' 337 338 def add_tool_substitutions(self, tools, search_dirs=None): 339 if not search_dirs: 340 search_dirs = [self.config.llvm_tools_dir] 341 342 if lit.util.is_string(search_dirs): 343 search_dirs = [search_dirs] 344 345 tools = [x if isinstance(x, ToolSubst) else ToolSubst(x) 346 for x in tools] 347 348 search_dirs = os.pathsep.join(search_dirs) 349 substitutions = [] 350 351 for tool in tools: 352 match = tool.resolve(self, search_dirs) 353 354 # Either no match occurred, or there was an unresolved match that 355 # is ignored. 356 if not match: 357 continue 358 359 subst_key, tool_pipe, command = match 360 361 # An unresolved match occurred that can't be ignored. Fail without 362 # adding any of the previously-discovered substitutions. 363 if not command: 364 return False 365 366 substitutions.append((subst_key, tool_pipe + command)) 367 368 self.config.substitutions.extend(substitutions) 369 return True 370 371 def add_err_msg_substitutions(self): 372 # Python's strerror may not supply the same message 373 # as C++ std::error_code. One example of such a platform is 374 # Visual Studio. errc_messages may be supplied which contains the error 375 # messages for ENOENT, EISDIR, EINVAL and EACCES as a semi colon 376 # separated string. LLVM testsuites can use get_errc_messages in cmake 377 # to automatically get the messages and pass them into lit. 378 errc_messages = getattr(self.config, 'errc_messages', '') 379 if len(errc_messages) != 0: 380 (errc_enoent, errc_eisdir, 381 errc_einval, errc_eacces) = errc_messages.split(';') 382 self.config.substitutions.append( 383 ('%errc_ENOENT', '\'' + errc_enoent + '\'')) 384 self.config.substitutions.append( 385 ('%errc_EISDIR', '\'' + errc_eisdir + '\'')) 386 self.config.substitutions.append( 387 ('%errc_EINVAL', '\'' + errc_einval + '\'')) 388 self.config.substitutions.append( 389 ('%errc_EACCES', '\'' + errc_eacces + '\'')) 390 else: 391 self.config.substitutions.append( 392 ('%errc_ENOENT', '\'' + os.strerror(errno.ENOENT) + '\'')) 393 self.config.substitutions.append( 394 ('%errc_EISDIR', '\'' + os.strerror(errno.EISDIR) + '\'')) 395 self.config.substitutions.append( 396 ('%errc_EINVAL', '\'' + os.strerror(errno.EINVAL) + '\'')) 397 self.config.substitutions.append( 398 ('%errc_EACCES', '\'' + os.strerror(errno.EACCES) + '\'')) 399 400 def use_default_substitutions(self): 401 tool_patterns = [ 402 ToolSubst('FileCheck', unresolved='fatal'), 403 # Handle these specially as they are strings searched for during 404 # testing. 405 ToolSubst(r'\| \bcount\b', command=FindTool('count'), 406 verbatim=True, unresolved='fatal'), 407 ToolSubst(r'\| \bnot\b', command=FindTool('not'), 408 verbatim=True, unresolved='fatal')] 409 410 self.config.substitutions.append(('%python', '"%s"' % (sys.executable))) 411 412 self.add_tool_substitutions( 413 tool_patterns, [self.config.llvm_tools_dir]) 414 415 self.add_err_msg_substitutions() 416 417 def use_llvm_tool(self, name, search_env=None, required=False, quiet=False, 418 search_paths=None, use_installed=False): 419 """Find the executable program 'name', optionally using the specified 420 environment variable as an override before searching the build directory 421 and then optionally the configuration's PATH.""" 422 # If the override is specified in the environment, use it without 423 # validation. 424 tool = None 425 if search_env: 426 tool = self.config.environment.get(search_env) 427 428 if not tool: 429 if search_paths is None: 430 search_paths = [self.config.llvm_tools_dir] 431 # Use the specified search paths. 432 path = os.pathsep.join(search_paths) 433 tool = lit.util.which(name, path) 434 435 if not tool and use_installed: 436 # Otherwise look in the path, if enabled. 437 tool = lit.util.which(name, self.config.environment['PATH']) 438 439 if required and not tool: 440 message = "couldn't find '{}' program".format(name) 441 if search_env: 442 message = message + \ 443 ', try setting {} in your environment'.format(search_env) 444 self.lit_config.fatal(message) 445 446 if tool: 447 tool = os.path.normpath(tool) 448 if not self.lit_config.quiet and not quiet: 449 self.lit_config.note('using {}: {}'.format(name, tool)) 450 return tool 451 452 def use_clang(self, additional_tool_dirs=[], additional_flags=[], 453 required=True, use_installed=False): 454 """Configure the test suite to be able to invoke clang. 455 456 Sets up some environment variables important to clang, locates a 457 just-built or optionally an installed clang, and add a set of standard 458 substitutions useful to any test suite that makes use of clang. 459 460 """ 461 # Clear some environment variables that might affect Clang. 462 # 463 # This first set of vars are read by Clang, but shouldn't affect tests 464 # that aren't specifically looking for these features, or are required 465 # simply to run the tests at all. 466 # 467 # FIXME: Should we have a tool that enforces this? 468 469 # safe_env_vars = ( 470 # 'TMPDIR', 'TEMP', 'TMP', 'USERPROFILE', 'PWD', 471 # 'MACOSX_DEPLOYMENT_TARGET', 'IPHONEOS_DEPLOYMENT_TARGET', 472 # 'VCINSTALLDIR', 'VC100COMNTOOLS', 'VC90COMNTOOLS', 473 # 'VC80COMNTOOLS') 474 possibly_dangerous_env_vars = [ 475 'COMPILER_PATH', 'RC_DEBUG_OPTIONS', 476 'CINDEXTEST_PREAMBLE_FILE', 'LIBRARY_PATH', 477 'CPATH', 'C_INCLUDE_PATH', 'CPLUS_INCLUDE_PATH', 478 'OBJC_INCLUDE_PATH', 'OBJCPLUS_INCLUDE_PATH', 479 'LIBCLANG_TIMING', 'LIBCLANG_OBJTRACKING', 480 'LIBCLANG_LOGGING', 'LIBCLANG_BGPRIO_INDEX', 481 'LIBCLANG_BGPRIO_EDIT', 'LIBCLANG_NOTHREADS', 482 'LIBCLANG_RESOURCE_USAGE', 483 'LIBCLANG_CODE_COMPLETION_LOGGING', 484 ] 485 # Clang/Win32 may refer to %INCLUDE%. vsvarsall.bat sets it. 486 if platform.system() != 'Windows': 487 possibly_dangerous_env_vars.append('INCLUDE') 488 489 self.clear_environment(possibly_dangerous_env_vars) 490 491 # Tweak the PATH to include the tools dir and the scripts dir. 492 # Put Clang first to avoid LLVM from overriding out-of-tree clang 493 # builds. 494 exe_dir_props = [self.config.name.lower() + '_tools_dir', 495 'clang_tools_dir', 'llvm_tools_dir'] 496 paths = [getattr(self.config, pp) for pp in exe_dir_props 497 if getattr(self.config, pp, None)] 498 paths = additional_tool_dirs + paths 499 self.with_environment('PATH', paths, append_path=True) 500 501 lib_dir_props = [ 502 self.config.name.lower() + '_libs_dir', 503 'llvm_shlib_dir', 504 'llvm_libs_dir', 505 ] 506 lib_paths = [getattr(self.config, pp) for pp in lib_dir_props 507 if getattr(self.config, pp, None)] 508 509 self.with_environment('LD_LIBRARY_PATH', lib_paths, append_path=True) 510 511 shl = getattr(self.config, 'llvm_shlib_dir', None) 512 pext = getattr(self.config, 'llvm_plugin_ext', None) 513 if shl: 514 self.config.substitutions.append(('%llvmshlibdir', shl)) 515 if pext: 516 self.config.substitutions.append(('%pluginext', pext)) 517 518 # Discover the 'clang' and 'clangcc' to use. 519 self.config.clang = self.use_llvm_tool( 520 'clang', search_env='CLANG', required=required, 521 search_paths=paths, use_installed=use_installed) 522 if self.config.clang: 523 self.config.available_features.add('clang') 524 builtin_include_dir = self.get_clang_builtin_include_dir( 525 self.config.clang) 526 tool_substitutions = [ 527 ToolSubst('%clang', command=self.config.clang, 528 extra_args=additional_flags), 529 ToolSubst('%clang_analyze_cc1', command='%clang_cc1', 530 extra_args=['-analyze', '%analyze', 531 '-setup-static-analyzer']+additional_flags), 532 ToolSubst('%clang_cc1', command=self.config.clang, 533 extra_args=['-cc1', '-internal-isystem', 534 builtin_include_dir, '-nostdsysteminc'] + 535 additional_flags), 536 ToolSubst('%clang_cpp', command=self.config.clang, 537 extra_args=['--driver-mode=cpp']+additional_flags), 538 ToolSubst('%clang_cl', command=self.config.clang, 539 extra_args=['--driver-mode=cl']+additional_flags), 540 ToolSubst('%clangxx', command=self.config.clang, 541 extra_args=['--driver-mode=g++']+additional_flags), 542 ] 543 self.add_tool_substitutions(tool_substitutions) 544 self.config.substitutions.append( 545 ('%resource_dir', builtin_include_dir)) 546 547 self.config.substitutions.append( 548 ('%itanium_abi_triple', 549 self.make_itanium_abi_triple(self.config.target_triple))) 550 self.config.substitutions.append( 551 ('%ms_abi_triple', 552 self.make_msabi_triple(self.config.target_triple))) 553 554 # The host triple might not be set, at least if we're compiling clang 555 # from an already installed llvm. 556 if (self.config.host_triple and 557 self.config.host_triple != '@LLVM_HOST_TRIPLE@'): 558 self.config.substitutions.append( 559 ('%target_itanium_abi_host_triple', 560 '--target=' + self.make_itanium_abi_triple( 561 self.config.host_triple))) 562 else: 563 self.config.substitutions.append( 564 ('%target_itanium_abi_host_triple', '')) 565 566 # FIXME: Find nicer way to prohibit this. 567 def prefer(this, to): 568 return '''\"*** Do not use '%s' in tests, use '%s'. ***\"''' % ( 569 to, this) 570 self.config.substitutions.append( 571 (' clang ', prefer('%clang', 'clang'))) 572 self.config.substitutions.append( 573 (r' clang\+\+ ', prefer('%clangxx', 'clang++'))) 574 self.config.substitutions.append( 575 (' clang-cc ', prefer('%clang_cc1', 'clang-cc'))) 576 self.config.substitutions.append( 577 (' clang-cl ', prefer('%clang_cl', 'clang-cl'))) 578 self.config.substitutions.append( 579 (' clang -cc1 -analyze ', 580 prefer('%clang_analyze_cc1', 'clang -cc1 -analyze'))) 581 self.config.substitutions.append( 582 (' clang -cc1 ', prefer('%clang_cc1', 'clang -cc1'))) 583 self.config.substitutions.append( 584 (' %clang-cc1 ', 585 '''\"*** invalid substitution, use '%clang_cc1'. ***\"''')) 586 self.config.substitutions.append( 587 (' %clang-cpp ', 588 '''\"*** invalid substitution, use '%clang_cpp'. ***\"''')) 589 self.config.substitutions.append( 590 (' %clang-cl ', 591 '''\"*** invalid substitution, use '%clang_cl'. ***\"''')) 592 593 def use_lld(self, additional_tool_dirs=[], required=True, 594 use_installed=False): 595 """Configure the test suite to be able to invoke lld. 596 597 Sets up some environment variables important to lld, locates a 598 just-built or optionally an installed lld, and add a set of standard 599 substitutions useful to any test suite that makes use of lld. 600 601 """ 602 603 # Tweak the PATH to include the tools dir and the scripts dir. 604 exe_dir_props = [self.config.name.lower() + '_tools_dir', 605 'lld_tools_dir', 'llvm_tools_dir'] 606 paths = [getattr(self.config, pp) for pp in exe_dir_props 607 if getattr(self.config, pp, None)] 608 paths = additional_tool_dirs + paths 609 self.with_environment('PATH', paths, append_path=True) 610 611 lib_dir_props = [self.config.name.lower() + '_libs_dir', 612 'lld_libs_dir', 'llvm_shlib_dir', 'llvm_libs_dir'] 613 lib_paths = [getattr(self.config, pp) for pp in lib_dir_props 614 if getattr(self.config, pp, None)] 615 616 self.with_environment('LD_LIBRARY_PATH', lib_paths, append_path=True) 617 618 # Discover the LLD executables to use. 619 620 ld_lld = self.use_llvm_tool('ld.lld', required=required, 621 search_paths=paths, 622 use_installed=use_installed) 623 lld_link = self.use_llvm_tool('lld-link', required=required, 624 search_paths=paths, 625 use_installed=use_installed) 626 ld64_lld = self.use_llvm_tool('ld64.lld', required=required, 627 search_paths=paths, 628 use_installed=use_installed) 629 wasm_ld = self.use_llvm_tool('wasm-ld', required=required, 630 search_paths=paths, 631 use_installed=use_installed) 632 633 was_found = ld_lld and lld_link and ld64_lld and wasm_ld 634 tool_substitutions = [] 635 if ld_lld: 636 tool_substitutions.append(ToolSubst(r'ld\.lld', command=ld_lld)) 637 self.config.available_features.add('ld.lld') 638 if lld_link: 639 tool_substitutions.append(ToolSubst('lld-link', command=lld_link)) 640 self.config.available_features.add('lld-link') 641 if ld64_lld: 642 tool_substitutions.append(ToolSubst(r'ld64\.lld', command=ld64_lld)) 643 self.config.available_features.add('ld64.lld') 644 if wasm_ld: 645 tool_substitutions.append(ToolSubst('wasm-ld', command=wasm_ld)) 646 self.config.available_features.add('wasm-ld') 647 self.add_tool_substitutions(tool_substitutions) 648 649 return was_found 650