######################################################################
# Cereal library build script
#
# Only 'hpp' is used by Iotivity, it's unnecessary to build it
######################################################################
import os

Import('env')

src_dir = env.get('SRC_DIR')

# In the pass, cereal library is in extlibs/cereal, according to external
# library management rule, cereal should be put in extlibs/cereal/cereal.
# jenkins of gerrit server, still follow the old, to avoid jenkins fail
# both places are handled.
old = os.path.join(src_dir, 'extlibs', 'cereal', 'include')
cur = os.path.join(src_dir, 'extlibs', 'cereal', 'cereal', 'include')

# check 'cereal' library, if it doesn't exits, ask user to download it
if not os.path.exists(old) and not os.path.exists(cur):
	cereal_env = Environment(ENV = os.environ)
	c = cereal_env.Action(['git clone https://github.com/USCiLab/cereal.git cereal',
		'cd cereal && git reset --hard 7121e91e6ab8c3e6a6516d9d9c3e6804e6f65245 && git apply ../../../resource/patches/cereal_gcc46.patch',
		])

	print 'Downloading cereal library ...'
	if cereal_env.Execute(c):
		print '''
*********************************** Error: ************************************
* Please download cereal and apply the patch as following:                    *
*     $ git clone https://github.com/USCiLab/cereal.git extlibs/cereal/cereal *
*     $ cd  extlibs/cereal/cereal                                             *
*     $ git reset --hard 7121e91e6ab8c3e6a6516d9d9c3e6804e6f65245             *
*     $ git apply ../../../resource/patches/cereal_gcc46.patch                *
*******************************************************************************
'''
		Exit(1)
	else:
		print 'Download cereal library complete'

env.AppendUnique(CPPPATH = [old, cur])