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from __future__ import generators
import config.base
class Configure(config.base.Configure):
def __init__(self, framework):
config.base.Configure.__init__(self, framework)
self.headerPrefix = ''
self.substPrefix = ''
return
def __str1__(self):
desc = []
if hasattr(self, 'integerSize'):
desc.append(' Integer size: ' + str(self.integerSize//8) + ' bytes')
return '\n'.join(desc)+'\n'
def setupHelp(self, help):
import nargs
help.addArgument('PETSc', '-with-64-bit-indices=<bool>', nargs.ArgBool(None, 0, 'Use 64-bit integers (long long) for indexing in vectors and matrices\n This does not affect indexing for BLAS/LAPACK, see --with-64-bit-blas-indices'))
return
def setupDependencies(self, framework):
config.base.Configure.setupDependencies(self, framework)
self.setCompilers = framework.require('config.setCompilers', self)
self.libraries = framework.require('config.libraries', None)
self.compilers = framework.require('config.compilers', None)
return
def fortranPromoteInteger(self):
self.pushLanguage('FC')
flags = self.getCompilerFlags()
self.popLanguage()
# ifort compiler flag gfortran compiler flag
if '-integer-size 64' in flags or '-fdefault-integer-8' in flags:
return 1
return 0
def configureIndexSize(self):
'''Determine the size of PETSc indices (32 or 64-bit), from -with-64-bit-indices'''
if self.framework.argDB['with-64-bit-indices']:
self.integerSize = 64
self.addDefine('USE_64BIT_INDICES', 1)
if self.libraries.check('-lgcc_s.1', '__floatdidf'):
self.compilers.LIBS += ' '+self.libraries.getLibArgument('-lgcc_s.1')
self.addMakeMacro('PETSC_INDEX_SIZE', '64')
if self.fortranPromoteInteger():
self.addDefine('PROMOTE_FORTRAN_INTEGER', 1)
self.logPrintWarning('You have a Fortran compiler option to promote integer to 8 bytes. This is fragile and not supported by the MPI standard. You must ensure in your code that all calls to MPI routines pass 4-byte integers.')
else:
self.integerSize = 32
self.addMakeMacro('PETSC_INDEX_SIZE', '32')
if self.fortranPromoteInteger():
raise RuntimeError('Fortran compiler flag to promote integers to 8 bytes has been set, but PETSc is being built with 4-byte integers.')
return
def configure(self):
self.executeTest(self.configureIndexSize)
return
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