Function cc_macros

configure.py:1645–1671

Checks predefined macros using the C compiler command.

(cc=None)

def cc_macros(cc=None):
  """Checks predefined macros using the C compiler command."""

  try:
    p = subprocess.Popen(shlex.split(cc or CC) + ['-dM', '-E', '-'],
                         stdin=subprocess.PIPE,
                         stdout=subprocess.PIPE,
                         stderr=subprocess.PIPE)
  except OSError:
    error('''No acceptable C compiler found!

       Please make sure you have a C compiler installed on your system and/or
       consider adjusting the CC environment variable if you installed
       it in a non-standard prefix.''')

  with p:
    p.stdin.write(b'\n')
    out = to_utf8(p.communicate()[0]).split('\n')

  k = {}
  for line in out:
    lst = shlex.split(line)
    if len(lst) > 2:
      key = lst[1]
      val = lst[2]
      k[key] = val
  return k


def is_arch_armv7():