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declarative

SConstruct
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			# -- mode:python; coding: utf-8 --
			# vim: set ft=python:

			# @file
			# @section LICENSE
			#
			# Copyright (©) 2016-2020 EPFL (École Polytechnique Fédérale de Lausanne),
			# Laboratory (LSMS - Laboratoire de Simulation en Mécanique des Solides)
			#
			# This program is free software: you can redistribute it and/or modify
			# it under the terms of the GNU Affero General Public License as published
			# by the Free Software Foundation, either version 3 of the License, or
			# (at your option) any later version.
			#
			# This program is distributed in the hope that it will be useful,
			# but WITHOUT ANY WARRANTY; without even the implied warranty of
			# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
			# GNU Affero General Public License for more details.
			#
			# You should have received a copy of the GNU Affero General Public License
			# along with this program. If not, see <https://www.gnu.org/licenses/>.

			# ------------------------------------------------------------------------------
			# Imports
			# ------------------------------------------------------------------------------
			from __future__ import print_function

			import os

			import SCons

			from os.path import join, abspath

			# Import below not strictly necessary, but good for pep8
			from SCons.Script import (
			EnsurePythonVersion,
			EnsureSConsVersion,
			Help,
			Environment,
			Variables,
			EnumVariable,
			PathVariable,
			BoolVariable,
			Split,
			SConscript,
			Export,
			Dir
			)

			from version import get_git_subst
			from detect import (
			FindFFTW,
			FindBoost,
			FindThrust,
			FindCuda,
			FindExpolit,
			FindPybind11
			)

			# ------------------------------------------------------------------------------

			EnsurePythonVersion(2, 7)
			EnsureSConsVersion(2, 4)

			# ------------------------------------------------------------------------------

			tamaas_info = dict(
			version="2.1.1",
			authors=[
			u'Lucas Frérot',
			'Guillaume Anciaux',
			'Valentine Rey',
			'Son Pham-Ba',
			u'Jean-François Molinari'
			],
			maintainer=u'Lucas Frérot',
			email='lucas.frerot@epfl.ch',
			copyright=u"Copyright (©) 2016-2020 EPFL "
			+ u"(École Polytechnique Fédérale de Lausanne), "
			+ u"Laboratory (LSMS - Laboratoire de Simulation en Mécanique des Solides)"
			)


			# ------------------------------------------------------------------------------
			def detect_dependencies(env):
			"""Detect all dependencies"""
			FindFFTW(env, ['omp'], precision=env['real_type'])
			FindBoost(env, ['boost/preprocessor/seq.hpp'])
			FindExpolit(env)

			thrust_var = 'THRUST_ROOT'

			# Take cuda version of thrust if available
			if 'CUDA_ROOT' in env['ENV']:
			thrust_var = 'CUDA_ROOT'

			FindThrust(env, env['backend'], thrust_var)

			# Activate cuda if needed
			if env['backend'] == 'cuda':
			FindCuda(env)

			if env['build_python']:
			FindPybind11(env)


			# ------------------------------------------------------------------------------
			# Main compilation
			# ------------------------------------------------------------------------------

			# Compilation colors
			colors = {
			'cyan': '\033[96m',
			'purple': '\033[95m',
			'blue': '\033[94m',
			'green': '\033[92m',
			'yellow': '\033[93m',
			'red': '\033[91m',
			'end': '\033[0m'
			}

			# Inherit all environment variables (for CXX detection, etc.)
			main_env = Environment(
			ENV=os.environ,
			)

			# Set tamaas information
			for k, v in tamaas_info.items():
			main_env[k] = v

			main_env['COLOR_DICT'] = colors

			# Compiler detection
			compiler_default = os.getenv('CXX', 'g++')

			# Build variables
			vars = Variables('build-setup.conf')
			vars.AddVariables(
			EnumVariable('build_type', 'Build type', 'release',
			allowed_values=('release', 'profiling', 'debug'),
			ignorecase=2),
			EnumVariable('backend', 'Thrust backend', 'omp',
			allowed_values=('omp', 'tbb'),
			# allowed_values=('omp', 'cuda'),
			ignorecase=2),
			EnumVariable('sanitizer', 'Sanitizer type', 'none',
			allowed_values=('none', 'memory', 'leaks', 'address'),
			ignorecase=2),

			PathVariable('prefix',
			'Prefix where to install', '/usr/local'),

			# Dependencies paths
			PathVariable('FFTW_ROOT',
			'FFTW custom path', os.getenv('FFTW_ROOT', ''),
			PathVariable.PathAccept),
			PathVariable('THRUST_ROOT',
			'Thrust custom path', os.getenv('THRUST_ROOT', ''),
			PathVariable.PathAccept),
			PathVariable('BOOST_ROOT',
			'Boost custom path', os.getenv('BOOST_ROOT', ''),
			PathVariable.PathAccept),
			PathVariable('CUDA_ROOT',
			'Cuda custom path', os.getenv('CUDA_ROOT', ''),
			PathVariable.PathAccept),
			# Dependencies provided as submodule get different default
			PathVariable('GTEST_ROOT',
			'Googletest custom path',
			os.getenv('GTEST_ROOT', '#third-party/googletest/googletest'),
			PathVariable.PathAccept),
			PathVariable('PYBIND11_ROOT',
			'Pybind11 custom path',
			os.getenv('PYBIND11_ROOT', '#third-party/pybind11/include'),
			PathVariable.PathAccept),
			PathVariable('EXPOLIT_ROOT',
			'Expolit custom path',
			os.getenv('EXPOLIT_ROOT', '#third-party/expolit/include'),
			PathVariable.PathAccept),

			# Executables
			('CXX', 'Compiler', compiler_default),
			('py_exec', 'Python executable', 'python3'),

			# Compiler flags
			('CXXFLAGS', 'C++ compiler flags', os.getenv('CXXFLAGS', "")),

			# Compile legacy code
			BoolVariable('legacy_bem', 'Compile legacy BEM code', False),
			# Cosmetic
			BoolVariable('verbose', 'Activate verbosity', False),
			BoolVariable('color', 'Color the non-verbose compilation output', False),

			# Tamaas components
			BoolVariable('build_doc', 'Build documentation', False),
			BoolVariable('build_tests', 'Build test suite', False),
			BoolVariable('build_python', 'Build python wrapper', True),

			# Dependencies
			BoolVariable('use_googletest', 'Build tests using GTest', False),

			# Strip binary of extra info
			BoolVariable('strip_info', 'Strip binary of added information', False),

			# Type variables
			EnumVariable('real_type', 'Type for real precision variables', 'double',
			allowed_values=('double', 'long double')),
			EnumVariable('integer_type', 'Type for integer variables', 'int',
			allowed_values=('int', 'long')),
			)

			# Set variables of environment
			vars.Update(main_env)
			help_text = vars.GenerateHelpText(main_env)
			help_text += """
			Commands:
			scons [build] [options]... Compile Tamaas (and additional modules/tests)
			scons install [prefix=/your/prefix] [options]... Install Tamaas to prefix
			scons dev Install symlink to Tamaas python module (useful to development purposes)
			scons test Run tests with pytest
			scons doc Compile documentation with Doxygen and Sphinx+Breathe
			scons archive Create a gzipped archive from source
			""" # noqa
			Help(help_text)

			# Save all options, not just those that differ from default
			with open('build-setup.conf', 'w') as setup:
			for option in vars.options:
			setup.write("# " + option.help + "\n")
			setup.write("{} = '{}'\n".format(option.key, main_env[option.key]))

			main_env['should_configure'] = \
			not main_env.GetOption('clean') and not main_env.GetOption('help')

			build_type = main_env['build_type']
			build_dir = 'build-' + main_env['build_type']
			main_env['build_dir'] = build_dir

			if main_env['should_configure']:
			print("Building in " + build_dir)

			verbose = main_env['verbose']

			# Remove colors if not set
			if not main_env['color']:
			for key in colors:
			colors[key] = ''

			if not verbose:
			main_env['CXXCOMSTR'] = main_env['SHCXXCOMSTR'] = \
			u'{0}[Compiling ($SHCXX)] {1}$SOURCE'.format(colors['green'],
			colors['end'])
			main_env['LINKCOMSTR'] = main_env['SHLINKCOMSTR'] = \
			u'{0}[Linking] {1}$TARGET'.format(colors['purple'],
			colors['end'])
			main_env['PRINT_CMD_LINE_FUNC'] = pretty_cmd_print

			# Include paths
			main_env.AppendUnique(CPPPATH=['#/src',
			'#/src/core',
			'#/src/bem',
			'#/src/surface',
			'#/src/python',
			'#/src/percolation',
			'#/src/model',
			'#/src/model/elasto_plastic',
			'#/src/solvers',
			'#/src/gpu',
			'#/python'])

			# Changing the shared object extension
			main_env['SHOBJSUFFIX'] = '.o'

			# Back to gcc if cuda is activated
			if main_env['backend'] == "cuda" and "g++" not in main_env['CXX']:
			raise SCons.Errors.StopError('GCC should be used when compiling with CUDA')

			# OpenMP flags - compiler dependent
			omp_flags = {
			"g++": ["-fopenmp"],
			"clang++": ["-fopenmp"],
			"icpc": ["-qopenmp"]
			}


			def cxx_alias(cxx):
			for k in omp_flags.keys():
			if k in cxx:
			return k

			raise SCons.Errors.StopError('Unsupported compiler: ' + cxx)


			cxx = cxx_alias(main_env['CXX'])
			main_env['CXXFLAGS'] = Split(main_env['CXXFLAGS'])
			main_env.AppendUnique(CXXFLAGS='-std=c++14 -Wall -Wextra -pedantic'.split())

			# Append openmp flags regardless of backend for fftw_omp
			main_env.AppendUnique(CXXFLAGS=omp_flags[cxx])
			main_env.AppendUnique(LINKFLAGS=omp_flags[cxx])

			# Correct bug in clang?
			if main_env['backend'] == 'omp' and cxx == "clang++":
			main_env.AppendUnique(LIBS=["atomic"])
			elif main_env['backend'] == 'tbb':
			main_env.AppendUnique(LIBS=['tbb'])

			# Force deactivate legacy when using intel
			# Intel does not like old openmp loops
			if cxx == 'icpc' and main_env['legacy_bem']:
			print("Using intel compiler => deactivating legacy code")
			main_env['legacy_bem'] = False

			# Flags and options
			if main_env['build_python']:
			main_env.AppendUnique(CPPDEFINES=['USE_PYTHON'])
			if main_env['legacy_bem']:
			main_env.AppendUnique(CPPDEFINES=['LEGACY_BEM'])
			if main_env['build_type'] == 'debug':
			main_env.AppendUnique(CPPDEFINES=['TAMAAS_DEBUG'])

			# Define the scalar types
			main_env.AppendUnique(CPPDEFINES={'REAL_TYPE': '${real_type}',
			'INT_TYPE': '${integer_type}'})

			if main_env['real_type'] == 'long double':
			main_env.AppendUnique(CPPDEFINES=['LONG_PRECISION'])

			# Compilation flags
			cxxflags_dict = {
			"debug": Split("-g -O0"),
			"profiling": Split("-g -O3 -fno-omit-frame-pointer"),
			"release": Split("-O3")
			}

			# Link flags for shared libs
			shlinkflags_dict = {
			"debug": [],
			"profiling": Split("-g -O3 -fno-omit-frame-pointer"),
			"release": []
			}

			if main_env['sanitizer'] != 'none':
			if main_env['backend'] == 'cuda':
			raise SCons.Errors.StopError(
			"Sanitizers with cuda are not yet supported!")
			cxxflags_dict[build_type].append('-fsanitize=${sanitizer}')
			shlinkflags_dict[build_type].append('-fsanitize=${sanitizer}')

			main_env.AppendUnique(CXXFLAGS=cxxflags_dict[build_type])
			main_env.AppendUnique(SHLINKFLAGS=shlinkflags_dict[build_type])
			main_env.AppendUnique(LINKFLAGS=shlinkflags_dict[build_type])

			# Adding
			main_env['LIBPATH'] = [abspath(join(build_dir, 'src')),
			abspath(join(main_env['prefix'], 'lib'))]
			main_env['RPATH'] = "$LIBPATH"

			if main_env['should_configure']:
			detect_dependencies(main_env)

			# Writing information file
			main_env.Tool('textfile')
			main_env['SUBST_DICT'] = get_git_subst()

			# Empty values if requested
			if main_env['strip_info']:
			for k in main_env['SUBST_DICT']:
			main_env['SUBST_DICT'][k] = ""

			# Substitution of environment file
			main_env['SUBST_DICT'].update({
			'@build_type@': '$build_type',
			'@build_dir@': abspath(build_dir),
			})

			# Environment file content
			env_content = """export PYTHONPATH=@build_dir@/python:$$PYTHONPATH
			export LD_LIBRARY_PATH=@build_dir@/src:$$LD_LIBRARY_PATH
			"""

			# Writing environment file
			env_file = main_env.Textfile(join(build_dir, 'tamaas_environment.sh'),
			env_content)


			# Building sub-directories
			def subdir(dir):
			return SConscript(join(dir, 'SConscript'),
			variant_dir=join(build_dir, dir),
			duplicate=True)


			# Building Tamaas library
			Export('main_env')
			subdir('src')

			build_targets = ['build-cpp', env_file]
			install_targets = ['install-lib']

			# Building Tamaas extra components
			for dir in ['python', 'tests']:
			if main_env['build_{}'.format(dir)] and not main_env.GetOption('help'):
			subdir(dir)
			build_targets.append('build-{}'.format(dir))

			# Building API + Sphinx documentation if requested
			if main_env['build_doc']:
			doc = main_env.Command('#.phony_doc', '',
			'make -C {}'.format(Dir('#/doc')))
			main_env.Alias('doc', doc)
			else:
			dummy_command(main_env, 'doc', 'Command "doc" does not do anything'
			' without documentation activated ("build_doc=True")')

			# Define dummy dev command when python is deactivated
			if not main_env['build_python']:
			dummy_command(main_env, 'dev', 'Command "dev" does not do anything'
			+ ' without python activated ("build_python=True")')
			else:
			install_targets.append('install-python')

			# Define dummy test command when tests are deactivated
			if not main_env['build_tests']:
			dummy_command(main_env, 'test', 'Command "test" does not do anything'
			+ ' without tests activated ("build_tests=True")')

			# Definition of target aliases, a.k.a. sub-commands
			main_env.Alias('build', build_targets)

			# Define proper install targets
			main_env.Alias('install', install_targets)

			# Default target is to build stuff
			main_env.Default('build')

			# Building a tar archive
			archive = main_env.Command(
			'../tamaas-{}.tar.gz'.format(main_env['version']),
			'',
			('tar --exclude-vcs --exclude-vcs-ignores '
			'--exclude=third-party/googletest '
			'--exclude=third-party/pybind11 '
			'--exclude=joss '
			'-czf $TARGET .'),
			)
			main_env.Alias('archive', archive)

tamaas/SConstruct250c5d393fe5features/declarative

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tamaas/SConstruct
250c5d393fe5features/declarative

SConstruct
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