def default_compilers():
"""Get the default installed compilers for the host.
This is most likely the installation of the host's preferred compilers,
(see :any:`preferred_compilers`) but if those compilers are not installed
then it will be an installation of any known compiler family. May probe
environment variables and file systems in cases where the arch isn't
immediately known to Python. These tests may be expensive so the detected
value is cached to improve performance.
Raises:
ConfigurationError: No recognized compilers are installed.
Returns:
InstalledCompilerFamily: The default compilers.
"""
try:
inst = default_compilers.inst
except AttributeError:
from tau.cf.compiler import CompilerFamily
LOGGER.debug("Detecting default host compilers")
# CompilerFamily.all() returns the host's preferred compilers as the first element
for family in CompilerFamily.all():
try:
inst = InstalledCompilerFamily(family)
except ConfigurationError as err:
LOGGER.debug(err)
else:
LOGGER.debug("Found a %s compiler installation", family.name)
default_compilers.inst = inst
break
else:
raise ConfigurationError("No recognized compilers installed.")
return inst
def construct_parser(self):
parser = super(TargetCreateCommand, self).construct_parser()
group = parser.add_argument_group('host arguments')
group.add_argument('--host-compilers',
help="select all host compilers automatically from the given family",
metavar='<family>',
dest='host_family',
default=host.preferred_compilers().name,
choices=CompilerFamily.family_names())
group = parser.add_argument_group('Message Passing Interface (MPI) arguments')
group.add_argument('--mpi-compilers',
help="select all MPI compilers automatically from the given family",
metavar='<family>',
dest='mpi_family',
default=host.preferred_mpi_compilers().name,
choices=MpiCompilerFamily.family_names())
return parser
