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      1 # -*- Python -*-
      2 
      3 # Configuration file for 'lit' test runner.
      4 # This file contains common rules for various compiler-rt testsuites.
      5 # It is mostly copied from lit.cfg used by Clang.
      6 import os
      7 import platform
      8 
      9 # Setup test format
     10 execute_external = (platform.system() != 'Windows'
     11                     or lit.getBashPath() not in [None, ""])
     12 config.test_format = lit.formats.ShTest(execute_external)
     13 
     14 # Setup clang binary.
     15 clang_path = getattr(config, 'clang', None)
     16 if (not clang_path) or (not os.path.exists(clang_path)):
     17   lit.fatal("Can't find Clang on path %r" % clang_path)
     18 if not lit.quiet:
     19   lit.note("using clang: %r" % clang_path)
     20 
     21 # Clear some environment variables that might affect Clang.
     22 possibly_dangerous_env_vars = ['COMPILER_PATH', 'RC_DEBUG_OPTIONS',
     23                                'CINDEXTEST_PREAMBLE_FILE', 'LIBRARY_PATH',
     24                                'CPATH', 'C_INCLUDE_PATH', 'CPLUS_INCLUDE_PATH',
     25                                'OBJC_INCLUDE_PATH', 'OBJCPLUS_INCLUDE_PATH',
     26                                'LIBCLANG_TIMING', 'LIBCLANG_OBJTRACKING',
     27                                'LIBCLANG_LOGGING', 'LIBCLANG_BGPRIO_INDEX',
     28                                'LIBCLANG_BGPRIO_EDIT', 'LIBCLANG_NOTHREADS',
     29                                'LIBCLANG_RESOURCE_USAGE',
     30                                'LIBCLANG_CODE_COMPLETION_LOGGING']
     31 # Clang/Win32 may refer to %INCLUDE%. vsvarsall.bat sets it.
     32 if platform.system() != 'Windows':
     33     possibly_dangerous_env_vars.append('INCLUDE')
     34 for name in possibly_dangerous_env_vars:
     35   if name in config.environment:
     36     del config.environment[name]
     37 
     38 # Tweak PATH to include llvm tools dir.
     39 llvm_tools_dir = getattr(config, 'llvm_tools_dir', None)
     40 if (not llvm_tools_dir) or (not os.path.exists(llvm_tools_dir)):
     41   lit.fatal("Invalid llvm_tools_dir config attribute: %r" % llvm_tools_dir)
     42 path = os.path.pathsep.join((llvm_tools_dir, config.environment['PATH']))
     43 config.environment['PATH'] = path
     44 
     45 # Define %clang and %clangxx substitutions to use in test RUN lines.
     46 config.substitutions.append( ("%clang ", (" " + config.clang + " ")) )
     47 config.substitutions.append( ("%clangxx ", (" " + config.clang +
     48                               " -ccc-cxx ")) )
     49 
     50 # Use ugly construction to explicitly prohibit "clang", "clang++" etc.
     51 # in RUN lines.
     52 config.substitutions.append(
     53     (' clang', """\n\n*** Do not use 'clangXXX' in tests,
     54      instead define '%clangXXX' substitution in lit config. ***\n\n""") )
     55