Help("""

Targets:

    all              - build everything,

    libs             - build all libraries

    demos            - build all demos

    models           - download/prepare all models

    docs             - compile doxygen documentation

    libs = (static-lib, python-module)

    static-lib       - ray tracer library to link with

    python-module    - ray tracer module for Python

    demos = (python-demos, cc-demos)

    python-demos     - Python demos, this depends on python-module

    cc-demos         - C++ demos

    models = (local-models, download-models)

    local-models     - prepare local models

    download-models  - download models which are not locally available

    no-docs = (libs, demos, models)

                     - everything but docs

    no-download = (libs, demos, local-models)

                     - everything but docs and downloadable models

Default target is no-download.

Options:

""")

import os, sys

env = Environment(ENV = {'PATH' : os.environ['PATH']})

Decider('MD5-timestamp')

opt = Options(['.optioncache'])

opt.AddOptions(

	BoolOption('intelc', 'use Intel C++ Compiler, if available', True),

	('flags', 'add additional compiler flags', ""),

)

if env['PLATFORM'] == 'win32':

	opt.AddOptions(

		('pythonpath', 'path to Python installation',

			'C:\\Python%c%c' % (sys.version[0], sys.version[2])),

		)

opt.Update(env)

opt.Save('.optioncache', env)

Help(opt.GenerateHelpText(env))

platform = 'unknown'

def CheckPlatform(context):

	global platform

	context.Message('Platform is... ')

	if sys.platform[:5] == 'linux':

		platform = 'linux'

	elif env['PLATFORM'] == 'posix':

		platform = 'posix'

	elif env['PLATFORM'] == 'win32':

		platform = 'win32'

	context.Result(platform)

	return True

cpu = 'unknown'

def CheckCPU(context):

	global cpu, platform

	context.Message('Checking CPU model... ')

	if (platform == 'linux'):

		if (os.system("cat /proc/cpuinfo | grep 'Core(TM)2 CPU' >/dev/null") == 0):

			cpu = 'core2'

	context.Result(cpu)

	return True

def CheckIntelC(context):

	global intelc

	context.Message('Checking for Intel C++ Compiler... ')

	return intelc

def CheckGCC(context):

	global gcc, gccversion

	context.Message('Checking for GCC... ')

	gcc = "g++" in env['TOOLS']

	if gcc:

		gccversion = os.popen("g++ --version").read().split()[2]

		context.Result(gccversion)

	else:

		context.Result(False)

	return gcc

conf = Configure(env,

	custom_tests = {

		'CheckPlatform' : CheckPlatform, 'CheckCPU' : CheckCPU,

		'CheckIntelC' : CheckIntelC, 'CheckGCC' : CheckGCC})

conf.CheckPlatform()

conf.CheckCPU()

conf.CheckGCC()

conf.CheckIntelC()

env = conf.Finish()

	cc = 'intelc'

elif gcc:

	cc = 'gcc'

cpu_flags = ''

if cc == 'gcc':

	cpu_flags += '-ffast-math '

if cpu == 'core2':

	if (cc == 'intelc' or gccversion[:3] == '4.3'):

		cpu_flags += '-march=core2 -mtune=core2 '

	if cc == 'intelc':

		cpu_flags += '-xT '

	if cc == 'gcc':

		cpu_flags += '-msse3 -mfpmath=sse '

cpu_flags += env['flags']

	env.Append(CCFLAGS="-O3 -w1 " + cpu_flags)

	env.Append(CCFLAGS="-O3 -Wall -pipe " + cpu_flags)

	# CCFLAGS= -fno-strict-aliasing

else:

	print "No supported compiler found."

	Exit(1)

# pthread

if env['PLATFORM'] == 'win32':

	env.Append(LIBS=["pthreadGC2"])

else:

	env.Append(CCFLAGS="-pthread ")

# float: -fsingle-precision-constant

# double: -DPYRIT_DOUBLE

(lib, pymodule) = SConscript('src/SConscript', build_dir='build/lib', duplicate=0, exports='env')

SConscript('ccdemos/SConscript', build_dir='build/ccdemos', duplicate=0, exports='env lib')

SConscript('demos/SConscript', exports='pymodule')

env.Alias('demos', ['cc-demos', 'python-demos'])

SConscript('models/SConscript')

env.Alias('docs', Command('docs/html', [], 'doxygen'))

env.Alias('no-docs', ['libs', 'demos', 'models'])

env.Alias('no-download', ['libs', 'demos', 'local-models'])

env.Alias('all', ['no-docs', 'docs'])

env.Alias('pyrit', 'no-download')

Default('pyrit')