import os
import sbms

# get env object and clone it
Import('*')

# Verify CERN environment variable is set
if os.getenv('CERN', 'nada')=='nada':
	if env.Dir('.').srcnode().abspath.startswith(env.GetLaunchDir()):
		print '============================================================'
		print 'CERN environment variable not set. Skipping build of bggen'
		print '============================================================'

else:

	env = env.Clone()
	
	# Turn off warnings for bggen since Pythia has too many
	env['FORTRANFLAGS'].remove('-Wall')

	sbms.AddCERNLIB(env)
	sbms.AddHDDM(env)

	# By default SConstruct adds 'include' which turns into
	# a path in variant directory that doesn't exist. gcc 4.8
	# then complains about it. Remove that and add the path
	# to the src directory.
	env['FORTRANPATH'].remove('include')	
	env.AppendUnique(FORTRANPATH=[env.Dir("include").srcnode().abspath])

	sbms.executable(env, 'bggen')