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# Copyright 2013-2022 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.tty as tty
import spack.compiler
from spack.package import *
class Nag(Package):
"""The NAG Fortran Compiler."""
homepage = "https://www.nag.com/nagware/np.asp"
maintainers = ["skosukhin"]
version("7.1", sha256="18640737b232cebeb532ba36187675cdaf36d5b1fc235a780fc9e588c19a3ed2")
version("7.0", sha256="6d509208533d79139e5a9f879b7b93e7b58372b78d404d51f35e491ecbaa54c7")
version("6.2", sha256="9b60f6ffa4f4be631079676963e74eea25e8824512e5c864eb06758b2a3cdd2d")
version("6.1", sha256="32580e0004e6798abf1fa52f0070281b28abeb0da2387530a4cc41218e813c7c")
# Licensing
license_required = True
license_comment = "!"
license_files = ["lib/nag.key"]
license_vars = ["NAG_KUSARI_FILE"]
license_url = "http://www.nag.com/doc/inun/np61/lin-mac/klicence.txt"
# The installation script erroneously revokes execute permissions for the
# installation directory of the man pages and therefore fails to copy all the files:
patch("chmod_man.patch", when="@7.0:")
def url_for_version(self, version):
# TODO: url and checksum are architecture dependent
# TODO: We currently only support x86_64
url = "https://www.nag.com/downloads/impl/npl6a{0}na_amd64.tgz"
return url.format(version.joined)
def install(self, spec, prefix):
# Set installation directories
os.environ["INSTALL_TO_BINDIR"] = prefix.bin
os.environ["INSTALL_TO_LIBDIR"] = prefix.lib
os.environ["INSTALL_TO_MANDIR"] = prefix.share.man.man
# Run install script
os.system("./INSTALLU.sh")
def setup_run_environment(self, env):
env.set("F77", self.prefix.bin.nagfor)
env.set("FC", self.prefix.bin.nagfor)
executables = ["^nagfor$"]
@classmethod
def determine_version(cls, exe):
version_regex = re.compile(r"NAG Fortran Compiler Release ([0-9.]+)")
# NAG does not support a flag that would enable verbose output and
# compilation/linking at the same time (with either '-#' or '-dryrun'
# the compiler only prints the commands but does not run them).
# Therefore, the only thing we can do is to pass the '-v' argument to
# the underlying GCC. In order to get verbose output from the latter
# at both compile and linking stages, we need to call NAG with two
# additional flags: '-Wc,-v' and '-Wl,-v'. However, we return only
# '-Wl,-v' for the following reasons:
# 1) the interface of this method does not support multiple flags in
# the return value and, at least currently, verbose output at the
# linking stage has a higher priority for us;
# 2) NAG is usually mixed with GCC compiler, which also accepts
# '-Wl,-v' and produces meaningful result with it: '-v' is passed
# to the linker and the latter produces verbose output for the
# linking stage ('-Wc,-v', however, would break the compilation
# with a message from GCC that the flag is not recognized).
#
# This way, we at least enable the implicit rpath detection, which is
# based on compilation of a C file (see method
# spack.compiler._get_compiler_link_paths): in the case of a mixed
# NAG/GCC toolchain, the flag will be passed to g++ (e.g.
# 'g++ -Wl,-v ./main.c'), otherwise, the flag will be passed to nagfor
# (e.g. 'nagfor -Wl,-v ./main.c' - note that nagfor recognizes '.c'
# extension and treats the file accordingly). The list of detected
# rpaths will contain only GCC-related directories and rpaths to
# NAG-related directories are injected by nagfor anyway.
try:
output = spack.compiler.get_compiler_version_output(exe, "-Wl,-v")
match = version_regex.search(output)
if match:
return match.group(1)
except spack.util.executable.ProcessError:
pass
except Exception as e:
tty.debug(e)
@classmethod
def determine_variants(cls, exes, version_str):
compilers = {}
for exe in exes:
if "nagfor" in exe:
compilers["fortran"] = exe
return "", {"compilers": compilers}
@property
def fortran(self):
msg = "cannot retrieve Fortran compiler [spec is not concrete]"
assert self.spec.concrete, msg
if self.spec.external:
return self.spec.extra_attributes["compilers"].get("fortran", None)
return str(self.spec.prefix.bin.nagfor)
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