src/llvm/test/Bindings/Go/lit.local.cfg

   1 import os
   2 import pipes
   3 import shlex
   4 import sys
   5
   6 if not 'go' in config.root.llvm_bindings:
   7     config.unsupported = True
   8
   9 def find_executable(executable, path=None):
  10     if path is None:
  11         path = os.environ['PATH']
  12     paths = path.split(os.pathsep)
  13     base, ext = os.path.splitext(executable)
  14
  15     if (sys.platform == 'win32' or os.name == 'os2') and (ext != '.exe'):
  16         executable = executable + '.exe'
  17
  18     if not os.path.isfile(executable):
  19         for p in paths:
  20             f = os.path.join(p, executable)
  21             if os.path.isfile(f):
  22                 return f
  23         return None
  24     else:
  25         return executable
  26
  27 # Resolve certain symlinks in the first word of compiler.
  28 #
  29 # This is a Go-specific hack. cgo and other Go tools check $CC and $CXX for the
  30 # substring 'clang' to determine if the compiler is Clang. This won't work if
  31 # $CC is cc and cc is a symlink pointing to clang, as it is on Darwin.
  32 #
  33 # Go tools also have problems with ccache, so we disable it.
  34 def fixup_compiler_path(compiler):
  35     args = shlex.split(compiler)
  36     if args[0].endswith('ccache'):
  37         args = args[1:]
  38
  39     path = find_executable(args[0])
  40
  41     try:
  42         if path.endswith('/cc') and os.readlink(path) == 'clang':
  43             args[0] = path[:len(path)-2] + 'clang'
  44     except (AttributeError, OSError):
  45         pass
  46
  47     try:
  48         if path.endswith('/c++') and os.readlink(path) == 'clang++':
  49             args[0] = path[:len(path)-3] + 'clang++'
  50     except (AttributeError, OSError):
  51         pass
  52
  53     return ' '.join([pipes.quote(arg) for arg in args])
  54
  55 config.environment['CC'] = fixup_compiler_path(config.host_cc)
  56 config.environment['CXX'] = fixup_compiler_path(config.host_cxx)
  57 config.environment['CGO_LDFLAGS'] = config.host_ldflags