def ensure_R_setup():
from rpy2 import situation
try:
if not situation.get_r_home(
) or not situation.r_version_from_subprocess():
raise MissingR()
except MissingR as e:
raise e
def get_r_c_extension_status():
r_home = situation.get_r_home()
if r_home is None:
return COMPILATION_STATUS.NO_R
c_ext = situation.CExtensionOptions()
c_ext.add_lib(*situation.get_r_flags(r_home, '--ldflags'))
c_ext.add_include(*situation.get_r_flags(r_home, '--cppflags'))
status = get_c_extension_status(libraries=c_ext.libraries,
include_dirs=c_ext.include_dirs,
library_dirs=c_ext.library_dirs)
return status
def get_r_c_extension_status():
r_home = situation.get_r_home()
if r_home is None:
print('There is no R_HOME and the R executable cannot be found.')
sys.exit(1)
c_ext = situation.CExtensionOptions()
c_ext.add_lib(*situation.get_r_flags(r_home, '--ldflags'))
c_ext.add_include(*situation.get_r_flags(r_home, '--cppflags'))
status = get_c_extension_status(libraries=c_ext.libraries,
include_dirs=c_ext.include_dirs,
library_dirs=c_ext.library_dirs)
return status
def get_r_c_extension_status():
r_home = situation.get_r_home()
if r_home is None:
return COMPILATION_STATUS.NO_R
c_ext = situation.CExtensionOptions()
try:
c_ext.add_lib(*situation.get_r_flags(r_home, '--ldflags'))
c_ext.add_include(*situation.get_r_flags(r_home, '--cppflags'))
except subprocess.CalledProcessError as cpe:
warnings.warn(str(cpe))
return COMPILATION_STATUS.RFLAGS_ERROR
status = get_c_extension_status(libraries=c_ext.libraries,
include_dirs=c_ext.include_dirs,
library_dirs=c_ext.library_dirs)
return status
def test_import_rpy2():
import rpy2
from rpy2 import situation
assert LooseVersion(rpy2.__version__) >= LooseVersion(
rlibs.RPY2_MIN_VERSION)
assert situation.get_r_home() is not None
Add directories containing R DLLs to the PATH environment variable.
"""
import ctypes
r_arch = ('i386', 'x64')[sys.maxsize > 2**32]
r_mod = os.path.join(r_home, 'modules', r_arch)
r_bin = os.path.join(r_home, 'bin', r_arch)
r_dll = os.path.join(r_bin, 'R.dll')
if not os.path.exists(r_dll):
raise RuntimeError("Unable to locate R.dll at %s" % r_dll)
if r_bin not in os.environ.get('PATH'):
os.environ['PATH'] = ';'.join((os.environ.get('PATH'), r_bin, r_mod))
ctypes.CDLL(r_dll)
R_HOME = get_r_home()
if not R_HOME:
raise RuntimeError("""The R home directory could not be determined.
Try to install R <https://www.r-project.org/>,
set the R_HOME environment variable to the R home directory, or
add the directory of the R interpreter to the PATH environment variable.
""")
if not os.environ.get("R_HOME"):
os.environ['R_HOME'] = R_HOME
if sys.platform == 'win32':
_load_r_dll(R_HOME)
