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# Copyright 2013-2023 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
import re
import llnl.util.lang
from spack.compiler import Compiler, UnsupportedCompilerFlag
from spack.version import Version
#: compiler symlink mappings for mixed f77 compilers
f77_mapping = [
("gfortran", os.path.join("clang", "gfortran")),
("xlf_r", os.path.join("xl_r", "xlf_r")),
("xlf", os.path.join("xl", "xlf")),
("pgfortran", os.path.join("pgi", "pgfortran")),
("ifort", os.path.join("intel", "ifort")),
]
#: compiler symlink mappings for mixed f90/fc compilers
fc_mapping = [
("gfortran", os.path.join("clang", "gfortran")),
("xlf90_r", os.path.join("xl_r", "xlf90_r")),
("xlf90", os.path.join("xl", "xlf90")),
("pgfortran", os.path.join("pgi", "pgfortran")),
("ifort", os.path.join("intel", "ifort")),
]
class Clang(Compiler):
# Subclasses use possible names of C compiler
cc_names = ["clang"]
# Subclasses use possible names of C++ compiler
cxx_names = ["clang++"]
# Subclasses use possible names of Fortran 77 compiler
f77_names = ["flang"]
# Subclasses use possible names of Fortran 90 compiler
fc_names = ["flang"]
version_argument = "--version"
@property
def debug_flags(self):
return [
"-gcodeview",
"-gdwarf-2",
"-gdwarf-3",
"-gdwarf-4",
"-gdwarf-5",
"-gline-tables-only",
"-gmodules",
"-g",
]
@property
def opt_flags(self):
return ["-O0", "-O1", "-O2", "-O3", "-Ofast", "-Os", "-Oz", "-Og", "-O", "-O4"]
# Clang has support for using different fortran compilers with the
# clang executable.
@property
def link_paths(self):
# clang links are always the same
link_paths = {
"cc": os.path.join("clang", "clang"),
"cxx": os.path.join("clang", "clang++"),
}
# fortran links need to look at the actual compiler names from
# compilers.yaml to figure out which named symlink to use
for compiler_name, link_path in f77_mapping:
if self.f77 and compiler_name in self.f77:
link_paths["f77"] = link_path
break
else:
link_paths["f77"] = os.path.join("clang", "flang")
for compiler_name, link_path in fc_mapping:
if self.fc and compiler_name in self.fc:
link_paths["fc"] = link_path
break
else:
link_paths["fc"] = os.path.join("clang", "flang")
return link_paths
@property
def verbose_flag(self):
return "-v"
openmp_flag = "-fopenmp"
@property
def cxx11_flag(self):
if self.real_version < Version("3.3"):
raise UnsupportedCompilerFlag(self, "the C++11 standard", "cxx11_flag", "< 3.3")
return "-std=c++11"
@property
def cxx14_flag(self):
if self.real_version < Version("3.4"):
raise UnsupportedCompilerFlag(self, "the C++14 standard", "cxx14_flag", "< 3.5")
elif self.real_version < Version("3.5"):
return "-std=c++1y"
return "-std=c++14"
@property
def cxx17_flag(self):
if self.real_version < Version("3.5"):
raise UnsupportedCompilerFlag(self, "the C++17 standard", "cxx17_flag", "< 3.5")
elif self.real_version < Version("5.0"):
return "-std=c++1z"
return "-std=c++17"
@property
def c99_flag(self):
return "-std=c99"
@property
def c11_flag(self):
if self.real_version < Version("3.0"):
raise UnsupportedCompilerFlag(self, "the C11 standard", "c11_flag", "< 3.0")
if self.real_version < Version("3.1"):
return "-std=c1x"
return "-std=c11"
@property
def c17_flag(self):
if self.real_version < Version("6.0"):
raise UnsupportedCompilerFlag(self, "the C17 standard", "c17_flag", "< 6.0")
return "-std=c17"
@property
def c23_flag(self):
if self.real_version < Version("9.0"):
raise UnsupportedCompilerFlag(self, "the C23 standard", "c23_flag", "< 9.0")
return "-std=c2x"
@property
def cc_pic_flag(self):
return "-fPIC"
@property
def cxx_pic_flag(self):
return "-fPIC"
@property
def f77_pic_flag(self):
return "-fPIC"
@property
def fc_pic_flag(self):
return "-fPIC"
required_libs = ["libclang"]
@classmethod
@llnl.util.lang.memoized
def extract_version_from_output(cls, output):
ver = "unknown"
if ("Apple" in output) or ("AMD" in output):
return ver
match = re.search(
# Normal clang compiler versions are left as-is
r"clang version ([^ )\n]+)-svn[~.\w\d-]*|"
# Don't include hyphenated patch numbers in the version
# (see https://github.com/spack/spack/pull/14365 for details)
r"clang version ([^ )\n]+?)-[~.\w\d-]*|" r"clang version ([^ )\n]+)",
output,
)
if match:
ver = match.group(match.lastindex)
return ver
|
