Package request: HPCG (#17350)

* use patch from upstream

Co-authored-by: Michael Kuhn <michael.kuhn@informatik.uni-hamburg.de>

var/spack/repos/builtin/packages/hpcg/package.py

@@ -0,0 +1,78 @@
+# Copyright 2013-2020 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)
+
+from spack import *
+import os
+import platform
+
+
+class Hpcg(AutotoolsPackage):
+    """HPCG is a software package that performs a fixed number of multigrid
+    preconditioned (using a symmetric Gauss-Seidel smoother) conjugate gradient
+    (PCG) iterations using double precision (64 bit) floating point values."""
+
+    homepage = "https://www.hpcg-benchmark.org"
+    url = "http://www.hpcg-benchmark.org/downloads/hpcg-3.1.tar.gz"
+    git = "https://github.com/hpcg-benchmark/hpcg.git"
+
+    version('develop', branch='master')
+    version('3.1', sha256='33a434e716b79e59e745f77ff72639c32623e7f928eeb7977655ffcaade0f4a4')
+
+    variant('openmp', default=True, description='Enable OpenMP support')
+
+    patch('https://github.com/hpcg-benchmark/hpcg/commit/e9e0b7e6cae23e1f30dd983c2ce2d3bd34d56f75.patch', sha256='23b9de83042eb7a8207fdddcfa79ae2cc1a17e8e623e2224c7751d7c328ee482', when='%gcc@9:')
+
+    depends_on('mpi@1.1:')
+
+    arch = '{0}-{1}'.format(platform.system(), platform.processor())
+    build_targets = ['arch={0}'.format(arch)]
+
+    def configure(self, spec, prefix):
+        CXXFLAGS = '-O3 -ffast-math '
+        CXXFLAGS += '-ftree-vectorize -ftree-vectorizer-verbose=0 '
+        if '+openmp' in self.spec:
+            CXXFLAGS += self.compiler.openmp_flag
+        config = [
+            # Shell
+            'SHELL         = /bin/sh',
+            'CD            = cd',
+            'CP            = cp',
+            'LN_S          = ln -fs',
+            'MKDIR         = mkdir -p',
+            'RM            = /bin/rm -f',
+            'TOUCH         = touch',
+            # Platform identifier
+            'ARCH          = {0}'.format(self.arch),
+            # HPCG Directory Structure / HPCG library
+            'TOPdir        = {0}'.format(os.getcwd()),
+            'SRCdir        = $(TOPdir)/src',
+            'INCdir        = $(TOPdir)/src',
+            'BINdir        = $(TOPdir)/bin',
+            # Message Passing library (MPI)
+            'MPinc         = -I{0}'.format(spec['mpi'].prefix.include),
+            'MPlib         = -L{0}'.format(spec['mpi'].prefix.lib),
+            # HPCG includes / libraries / specifics
+            'HPCG_INCLUDES = -I$(INCdir) -I$(INCdir)/$(arch) $(MPinc)',
+            'HPCG_LIBS     =',
+            'HPCG_OPTS     =',
+            'HPCG_DEFS     = $(HPCG_OPTS) $(HPCG_INCLUDES)',
+            # Compilers / linkers - Optimization flags
+            'CXX           = {0}'.format(spec['mpi'].mpicxx),
+            'CXXFLAGS      = $(HPCG_DEFS) {0}'.format(CXXFLAGS),
+            'LINKER        = $(CXX)',
+            'LINKFLAGS     = $(CXXFLAGS)',
+            'ARCHIVER      = ar',
+            'ARFLAGS       = r',
+            'RANLIB        = echo',
+        ]
+
+        # Write configuration options to include file
+        with open('setup/Make.{0}'.format(self.arch), 'w') as makefile:
+            for var in config:
+                makefile.write('{0}\n'.format(var))
+
+    def install(self, spec, prefix):
+        # Manual installation
+        install_tree('bin', prefix.bin)