def is_compatible(cmd):
"""Check if this subcommand can work with the given command.
Args:
cmd (str): A command from the command line, e.g. sys.argv[1].
Returns:
bool: True if this subcommand is compatible with `cmd`.
"""
return cmd in [info.command for info in CompilerInfo.all()]
def __init__(self, absolute_path):
"""Probes the system to find an installed compiler.
May check PATH, file permissions, or other conditions in the system
to determine if a compiler command is present and executable.
If this compiler command wraps another command, may also attempt to discover
information about the wrapped compiler as well.
Args:
absolute_path (str): Absolute path to the compiler command.
"""
self._md5sum = None
self.absolute_path = absolute_path
self.path = os.path.dirname(absolute_path)
self.command = os.path.basename(absolute_path)
try:
self.info = CompilerInfo.find(self.command)
except KeyError:
raise RuntimeError("Unknown compiler command '%s'" % self.absolute_path)
if self.info.family.show_wrapper_flags:
LOGGER.debug("Probing wrapper compiler '%s' to discover wrapped compiler", self.absolute_path)
cmd = [self.absolute_path] + self.info.family.show_wrapper_flags
LOGGER.debug("Creating subprocess: %s", cmd)
try:
stdout = subprocess.check_output(cmd, stderr=subprocess.STDOUT)
except subprocess.CalledProcessError as err:
raise RuntimeError("%s failed with return code %d: %s" % (cmd, err.returncode, err.output))
else:
LOGGER.debug(stdout)
LOGGER.debug("%s returned 0", cmd)
args = stdout.split()
self.wrapped = WrappedCompiler(args[0])
try:
self.wrapped.parse_args(args[1:], self.info.family)
except IndexError:
raise RuntimeError("Unexpected output from '%s':\n%s" % (' '.join(cmd), stdout))
else:
self.wrapped = None
