# Copyright 2013-2024 Lawrence Livermore National Security, LLC and other
# Spack Project Developers. See the top-level COPYRIGHT file for details.
#
# SPDX-License-Identifier: (Apache-2.0 OR MIT)
import os
from spack.compiler import Compiler, UnsupportedCompilerFlag
from spack.version import Version
[docs]
class Xl(Compiler):
# Subclasses use possible names of C compiler
cc_names = ["xlc"]
# Subclasses use possible names of C++ compiler
cxx_names = ["xlC", "xlc++"]
# Subclasses use possible names of Fortran 77 compiler
f77_names = ["xlf"]
# Subclasses use possible names of Fortran 90 compiler
fc_names = ["xlf90", "xlf95", "xlf2003", "xlf2008"]
# Named wrapper links within build_env_path
link_paths = {
"cc": os.path.join("xl", "xlc"),
"cxx": os.path.join("xl", "xlc++"),
"f77": os.path.join("xl", "xlf"),
"fc": os.path.join("xl", "xlf90"),
}
version_argument = "-qversion"
version_regex = r"([0-9]?[0-9]\.[0-9])"
@property
def verbose_flag(self):
return "-V"
@property
def debug_flags(self):
return ["-g", "-g0", "-g1", "-g2", "-g8", "-g9"]
@property
def opt_flags(self):
return ["-O", "-O0", "-O1", "-O2", "-O3", "-O4", "-O5", "-Ofast"]
@property
def openmp_flag(self):
return "-qsmp=omp"
@property
def cxx11_flag(self):
if self.real_version < Version("13.1"):
raise UnsupportedCompilerFlag(self, "the C++11 standard", "cxx11_flag", "< 13.1")
else:
return "-qlanglvl=extended0x"
@property
def c99_flag(self):
if self.real_version >= Version("13.1.1"):
return "-std=gnu99"
if self.real_version >= Version("10.1"):
return "-qlanglvl=extc99"
raise UnsupportedCompilerFlag(self, "the C99 standard", "c99_flag", "< 10.1")
@property
def c11_flag(self):
if self.real_version >= Version("13.1.2"):
return "-std=gnu11"
if self.real_version >= Version("12.1"):
return "-qlanglvl=extc1x"
raise UnsupportedCompilerFlag(self, "the C11 standard", "c11_flag", "< 12.1")
@property
def cxx14_flag(self):
# .real_version does not have the "y.z" component of "w.x.y.z", which
# is required to distinguish whether support is available
if self.version >= Version("16.1.1.8"):
return "-std=c++14"
raise UnsupportedCompilerFlag(self, "the C++14 standard", "cxx14_flag", "< 16.1.1.8")
@property
def cc_pic_flag(self):
return "-qpic"
@property
def cxx_pic_flag(self):
return "-qpic"
@property
def f77_pic_flag(self):
return "-qpic"
@property
def fc_pic_flag(self):
return "-qpic"
@property
def fflags(self):
# The -qzerosize flag is effective only for the Fortran 77
# compilers and allows the use of zero size objects.
# For Fortran 90 and beyond, it is set by default and has not impact.
# Its use has no negative side effects.
return "-qzerosize"
[docs]
@classmethod
def fc_version(cls, fc):
# The fortran and C/C++ versions of the XL compiler are always
# two units apart. By this we mean that the fortran release that
# goes with XL C/C++ 11.1 is 13.1. Having such a difference in
# version number is confusing spack quite a lot. Most notably
# if you keep the versions as is the default xl compiler will
# only have fortran and no C/C++. So we associate the Fortran
# compiler with the version associated to the C/C++ compiler.
# One last stumble. Version numbers over 10 have at least a .1
# those under 10 a .0. There is no xlf 9.x or under currently
# available. BG/P and BG/L can such a compiler mix and possibly
# older version of AIX and linux on power.
fortran_version = cls.default_version(fc)
if fortran_version >= 16:
# Starting with version 16.1, the XL C and Fortran compilers
# have the same version. So no need to downgrade the Fortran
# compiler version to match that of the C compiler version.
return str(fortran_version)
c_version = float(fortran_version) - 2
if c_version < 10:
c_version = c_version - 0.1
return str(c_version)
[docs]
@classmethod
def f77_version(cls, f77):
return cls.fc_version(f77)