helics: add new package (#15763)

* helics: add new package

* Remove FIXME boilerplate

* Use open @master: verison range for git dependency and remove mpi fix branch version

* Add blank line after spack import

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

+# 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 *
+
+
+class Helics(CMakePackage):
+    """HELICS is a general-purpose, modular, highly-scalable co-simulation
+    framework that runs cross-platform (Linux, Windows, and Mac OS X) and
+    supports both event driven and time series simulation."""
+
+    homepage = "https://github.com/GMLC-TDC/HELICS"
+    url      = "https://github.com/GMLC-TDC/HELICS/releases/download/v2.4.1/Helics-v2.4.1-source.tar.gz"
+    git      = "https://github.com/GMLC-TDC/HELICS.git"
+
+    maintainers = ['nightlark']
+
+    version('develop', branch='develop', submodules=True)
+    version('master', branch='master', submodules=True)
+    version('2.4.2', sha256='957856f06ed6d622f05dfe53df7768bba8fe2336d841252f5fac8345070fa5cb')
+    version('2.4.1', sha256='ac077e9efe466881ea366721cb31fb37ea0e72a881a717323ba4f3cdda338be4')
+
+    variant('build_type', default='Release',
+            description='CMake build type',
+            values=('Debug', 'Release', 'RelWithDebInfo', 'MinSizeRel'))
+    variant('apps', default=True, description="Install the HELICS apps")
+    variant('c_shared', default=True, description="Install the C shared library")
+    variant('cxx_shared', default=True, description="Install the CXX shared library")
+    variant('zmq', default=True, description="Enable ZeroMQ core types")
+    variant('tcp', default=True, description="Enable TCP core types")
+    variant('udp', default=True, description="Enable UDP core type")
+    variant('ipc', default=True, description="Enable IPC core type")
+    variant('inproc', default=True, description="Enable in-process core type")
+    variant('mpi', default=False, description="Enable MPI core type")
+    variant('boost', default=True, description="Compile with Boost libraries")
+    variant('asio', default=True, description="Compile with ASIO libraries")
+    variant('swig', default=False, description="Build language bindings with SWIG")
+    variant('webserver', default=True, description="Enable the integrated webserver in the HELICS broker server")
+
+    # Build dependency
+    depends_on('git', type='build', when='@master:')
+    depends_on('cmake@3.4:', type='build')
+    depends_on('boost@1.70: ~atomic ~chrono ~date_time ~exception ~filesystem ~graph ~iostreams ~locale ~log ~math ~program_options ~random ~regex ~serialization ~signals ~system ~test ~thread ~timer ~wave', type='build', when='+boost')
+    depends_on('swig@3.0:', type='build', when='+swig')
+
+    depends_on('libzmq@4.3:', when='+zmq')
+    depends_on('mpi@2', when='+mpi')
+
+    # OpenMPI doesn't work with HELICS <=2.4.1
+    conflicts('^openmpi', when='@:2.4.1 +mpi')
+
+    # Boost is required for ipc and webserver options
+    conflicts('+ipc', when='~boost')
+    conflicts('+webserver', when='~boost')
+
+    # ASIO (vendored in HELICS repo) is required for tcp and udp options
+    conflicts('+tcp', when='~asio')
+    conflicts('+udp', when='~asio')
+
+    def cmake_args(self):
+        spec = self.spec
+        args = [
+            '-DHELICS_BUILD_EXAMPLES=OFF',
+            '-DHELICS_BUILD_TESTS=OFF',
+        ]
+
+        # HELICS core type CMake options
+        args.append('-DENABLE_ZMQ_CORE={0}'.format(
+            'ON' if '+zmq' in spec else 'OFF'))
+        args.append('-DENABLE_TCP_CORE={0}'.format(
+            'ON' if '+tcp' in spec else 'OFF'))
+        args.append('-DENABLE_UDP_CORE={0}'.format(
+            'ON' if '+udp' in spec else 'OFF'))
+        args.append('-DENABLE_IPC_CORE={0}'.format(
+            'ON' if '+ipc' in spec else 'OFF'))
+        args.append('-DENABLE_INPROC_CORE={0}'.format(
+            'ON' if '+inproc' in spec else 'OFF'))
+        args.append('-DENABLE_MPI_CORE={0}'.format(
+            'ON' if '+mpi' in spec else 'OFF'))
+
+        # HELICS shared library options
+        args.append('-DHELICS_DISABLE_C_SHARED_LIB={0}'.format(
+            'OFF' if '+c_shared' in spec else 'ON'))
+        args.append('-DHELICS_BUILD_CXX_SHARED_LIB={0}'.format(
+            'ON' if '+cxx_shared' in spec else 'OFF'))
+
+        # HELICS executable app options
+        args.append('-DHELICS_BUILD_APP_EXECUTABLES={0}'.format(
+            'ON' if '+apps' in spec else 'OFF'))
+        args.append('-DHELICS_DISABLE_WEBSERVER={0}'.format(
+            'OFF' if '+webserver' in spec else 'ON'))
+
+        # Extra HELICS library dependencies
+        args.append('-DHELICS_DISABLE_BOOST={0}'.format(
+            'OFF' if '+boost' in spec else 'ON'))
+        args.append('-DHELICS_DISABLE_ASIO={0}'.format(
+            'OFF' if '+asio' in spec else 'ON'))
+
+        # SWIG
+        args.append('-DHELICS_ENABLE_SWIG={0}'.format(
+            'ON' if '+swig' in spec else 'OFF'))
+
+        return args