def get_portageq_envvars(self, varnames, board=None):
"""Returns the values of a given set of variables using portageq."""
if isinstance(varnames, basestring):
varnames = [varnames]
# See if the env already has these settings. If so, grab them directly.
# This avoids the need to specify --board at all most of the time.
try:
board_vars = {}
for varname in varnames:
board_vars[varname] = os.environ[varname]
return board_vars
except KeyError:
pass
if board is None and not self.host:
board = self.board
# Portage will set this to an incomplete list which breaks portageq
# walking all of the repos. Clear it and let the value be repopulated.
os.environ.pop('PORTDIR_OVERLAY', None)
return portage_util.PortageqEnvvars(varnames,
board=board,
allow_undefined=True)
def CalculateCompatId(board, extra_useflags):
"""Calculate the CompatId for board with the specified extra useflags.
This function requires that the board has been set up first (e.g. using
GenConfigsForBoard)
Args:
board: The board to use.
extra_useflags: A sequence of use flags to enable or disable.
Returns:
A CompatId object for the board with the specified extra_useflags.
"""
assert cros_build_lib.IsInsideChroot()
useflags = GetChromeUseFlags(board, extra_useflags)
result = portage_util.PortageqEnvvars(['ARCH', 'CFLAGS'], board=board)
return CompatId(result['ARCH'], useflags, result['CFLAGS'].split())
def InstallToolchain(sysroot, toolchain=None, force=False, configure=True):
"""Simplified entry point for the toolchain installation process."""
if not cros_build_lib.IsInsideChroot():
# Build the command to run inside the chroot instead.
cmd = [
os.path.join(constants.CHROMITE_BIN_DIR, 'install_toolchain'),
'--sysroot', sysroot.path
]
if toolchain:
cmd.append('--toolchain')
cmd.append(toolchain)
if force:
cmd.append('--force')
if not configure:
cmd.append('--noconfigure')
cros_build_lib.run(cmd, enter_chroot=True)
else:
envvars = portage_util.PortageqEnvvars(['CHOST', 'PKGDIR'])
installer = ToolchainInstaller(force, configure, envvars['CHOST'],
envvars['PKGDIR'])
installer.Install(sysroot, board_chost=toolchain)
def SummarizeCompatibility(board):
"""Returns a string that will be the same for compatible boards."""
result = portage_util.PortageqEnvvars(['ARCH', 'CFLAGS'], board=board)
return '%s %s' % (result['ARCH'], result['CFLAGS'])