#! /usr/bin/env python
# encoding: utf-8

import shutil, os

def configure (conf):
	# add "ibex/src/* " in the includes
	conf.env.append_unique ("INCLUDES", [os.path.join(conf.srcnode.abspath(),"src/%s") % p for p in 
		"arithmetic bisector combinatorial contractor function numeric geometry parser set strategy symbolic system tools predicate integrate".split()])
	conf.recurse("../plugins")
	
def build (bld):

	INCDIR  = "${PREFIX}/include/ibex"

	bld.env['IBEX_SRC'] = bld.path.ant_glob ("**/*.(cpp|yc|l)")	
	bld.env['IBEX_HDR'] = bld.path.ant_glob ("**/ibex_*.h")
	bld.env.IBEX_HDR.append ("ibex_Setting.h")

	bld.env.settings = {}
	bld.env.settings['_IBEX_RELEASE_']="\"%s\"" % bld.env['VERSION']
	bld.env.settings['_IBEX_WITH_%s_' % bld.env['INTERVAL_LIB']]="1"

	# add "__build__/src" in the includes, this is where ibex_Setting.h is stored
	bld.env.append_unique("INCLUDES", os.path.join(bld.bldnode.abspath(),"src"))

	# add "__build__/src/parser" in the includes, this is where parser.tab.hh is stored
	bld.env.append_unique("INCLUDES", os.path.join(bld.bldnode.abspath(),"src/parser"))
	
	bld.env['GLOBAL_DEPS'] = "gaol_objs gdtoa_objs ultim_objs filib_obj ampl_obj IBEX_DEPS"
	
	bld.recurse("../plugins")

	settings_string="// This file is automatically generated \n"
	for key in bld.env.settings:
		settings_string = settings_string+"#define "+key+" "+bld.env.settings[key]+'\n'

	# generate settings header file
	@bld.rule (
		target = "ibex_Setting.h",
		vars   = ["INTERVAL_LIB"],
		always = True,
		name   = "ibex_Setting_h_init"  
	)
	def _(tsk):
		tsk.outputs[0].write(settings_string)
		
	# headers
	@bld.rule (
		target = "ibex.h",
		name   = "ibex_headers",
		source = bld.env.IBEX_HDR,
		install_path = INCDIR,
	)
	def _(tsk):
		tsk.outputs[0].write (
			"// This file is automatically generated\n"
			+ "".join ('#include "%s"\n' % h.name for h in tsk.inputs))
	
	bld.install_files (INCDIR, bld.env.IBEX_HDR)
	bld.install_files (INCDIR, bld.path.ant_glob ("**/ibex_*.h_"))

	# c++ compilation
	tg_ibex = (bld.shlib if bld.env.ENABLE_SHARED else bld.stlib) (
		target = "ibex",
		use  = bld.env.GLOBAL_DEPS,
		source = bld.env.IBEX_SRC,
		install_path = bld.env.LIBDIR,
	)	


	if bld.env.WITH_JNI: 
		#            *** TO FIX ***
		# This task should go in the java plugin wscript. But I cannot
		# ensure that ibex-java is properly linked with ibex (probably 
		# because "recurse" is called before the ibex "target" exists which
		# makes the "use" flag below having no effect).
		# I have to run twice "waf install" to make it works. Otherwise I
		# get a UnsatisfiedLinkError with the java test program.
		bld.shlib (
			target = "../plugins/java/ibex-java",
			source = "../plugins/java/src/ibex_Java.cpp",
			use = "JAVA ibex",
			install_path = bld.env.LIBDIR,
		)	

	# pkg-config file
	@bld.rule (
		target = "ibex.pc",
		vars = "PREFIX VERSION INCLUDES INCLUDES_IBEX_DEPS CXXFLAGS_IBEX_DEPS LIBPATH_IBEX_DEPS LIB_IBEX_DEPS".split(),
		install_path = "${PREFIX}/share/pkgconfig",
	)
	def _ (tsk):
		bld.env.include_pkgconfig=""
		for p in bld.env.INCLUDES_IBEX_DEPS: # + bld.env.INCLUDES: --> useful?
			if p not in [os.path.join (bld.env.PREFIX, "include")]:
				bld.env.append_unique ("include_pkgconfig",p)
		tsk.outputs[0].write("""
prefix=%s
includedir=${prefix}/include
libdir=${prefix}/lib

Name: ibex
Description: A C++ library for interval-based algorithm design
Version: %s
Cflags: -I${includedir} -I${includedir}/ibex %s %s
Libs: -L${libdir} %s -libex %s
""" % (		tsk.env.PREFIX, tsk.env.VERSION,
		# extra CFLAGS
		# TODO: maybe remove INCLUDES ?
		" ".join(("-I%s" % p) for p in filter (os.path.isabs, tsk.env.include_pkgconfig)),
		# FIXME: are we allowed to include arbitrary cflags (other that -I) ?
		" ".join(tsk.env.CXXFLAGS_IBEX_DEPS),
		# extra LIBPATH
		" ".join(("-L%s" % p) for p in filter (os.path.isabs, tsk.env.LIBPATH_IBEX_DEPS)),
		# extra LIB
		" ".join(("-l%s" % l) for l in tsk.env.LIB_IBEX_DEPS),
	))