#! /usr/bin/env python
# encoding: utf-8
# Thomas Nagy, 2006 (ita)

# look for a command-line option named 'meow' by using "./waf --help" (where is it defined?)
import Utils
import Options

# VERSION and APPNAME are required by 'waf dist'
VERSION='0.0.1'
APPNAME='cpp_test'

# srcdir is almost always set to '.' except for some proprietary projects where the wscript
# file cannot be found in the top-level; those projects usually provide: srcdir='..'
top = '.'
out = 'build'

def set_options(opt):

	# command-line options provided in a script in a subdirectory named "src"
	opt.sub_options('src')

	# command-line options provided by a waf tool
	opt.tool_options('compiler_cxx')

	# custom command-line options
	opt.add_option('--exe', action='store_true', default=False, help='Execute the program after it is compiled')

	opt.add_option('--build_kind', action='store', default='debug,release', help='build the selected variants')

def configure(conf):

	# conf.env.CXX = Options.options.meow
	# to configure using another compiler, use a command-line like this
	# CXX=g++-3.0 ./waf.py configure will use g++-3.0 instead of 'g++'
	conf.check_tool('compiler_cxx')

	## batched builds can be enabled by including the module optim_cc
	# conf.check_tool('batched_cc')

	conf.sub_config('src')

	# here is how to override flags
	conf.env.CXXFLAGS_MYPROG  = ['-O3']
	if not Utils.is_win32: conf.env.LIB_MYPROG = ['m']
	conf.env.SOME_INSTALL_DIR = '/tmp/ahoy/lib/'

	# create a debug and release builds (variants)
	dbg = conf.env.copy()
	rel = conf.env.copy()

	dbg.set_variant('debug')
	conf.set_env_name('debug', dbg)
	conf.setenv('debug')
	conf.env.CXXFLAGS = ['-D_REENTRANT', '-DDBG_ENABLED', '-Wall', '-O0', '-ggdb3', '-ftemplate-depth-128']

	rel.set_variant('release')
	conf.set_env_name('release', rel)
	conf.setenv('release')
	conf.env.CXXFLAGS = ['-O2']

def build(bld):
	# process subfolders from here
	bld.env.CXXDEPS_MYPROG = '3344539'

	bld.add_subdirs('src app')

	# Examples for installing resources and files when doing './waf install'
	bld.install_files('${PREFIX}/subfolder/subsubfolder', 'src/*.h')
	#bld.install_files('${PREFIX}', 'src/a2.h src/a1.h')
	#install_as('${PREFIX}/dir/bar.png', 'foo.png')

	# enable the debug or the release variant, depending on the one wanted
	for obj in bld.all_task_gen[:]:

		# task generator instances (bld.new_task_gen...) should be created in the same order
		# to avoid unnecessary rebuilds (remember that cloning task generators is cheap, but copying task instances are expensive)
		debug_obj = obj.clone('debug')
		release_obj = obj.clone('release')

		# stupid reminder: do not make clones for the same variant (default -> default)

		# disable the original task generator for the default variant (do not use it)
		obj.posted = 1

		# disable the unwanted variant(s)
		kind = Options.options.build_kind
		if kind.find('debug') < 0:
			debug_obj.posted = 1
		if kind.find('release') < 0:
			release_obj.posted = 1

	# here is how to execute a command when the build finishes
	def post(bld):
		cmd = "PATH=plugins:$PATH LD_LIBRARY_PATH=build/default/src/:$LD_LIBRARY_PATH build/default/src/testprogram"

		# if the custom option is set, execute the program
		if Options.options.exe:
			import os
			os.popen(cmd)

		# in case if more people ask
		#if Options.commands['install']:
		#	try: os.popen("/sbin/ldconfig")
		#	except: pass

	bld.add_post_fun(post)