#! /usr/bin/env python
# encoding: utf-8
# WARNING! Do not edit! http://waf.googlecode.com/git/docs/wafbook/single.html#_obtaining_the_waf_file

import os
from waflib import Task,Options,Utils
from waflib.TaskGen import before_method,feature,after_method,Task,extension
from waflib.Configure import conf
def init_rubyext(self):
	self.install_path='${ARCHDIR_RUBY}'
	self.uselib=self.to_list(getattr(self,'uselib',''))
	if not'RUBY'in self.uselib:
		self.uselib.append('RUBY')
	if not'RUBYEXT'in self.uselib:
		self.uselib.append('RUBYEXT')
def apply_ruby_so_name(self):
	self.env['cshlib_PATTERN']=self.env['cxxshlib_PATTERN']=self.env['rubyext_PATTERN']
def check_ruby_version(self,minver=()):
	if Options.options.rubybinary:
		self.env.RUBY=Options.options.rubybinary
	else:
		self.find_program('ruby',var='RUBY')
	ruby=self.env.RUBY
	try:
		version=self.cmd_and_log([ruby,'-e','puts defined?(VERSION) ? VERSION : RUBY_VERSION']).strip()
	except:
		self.fatal('could not determine ruby version')
	self.env.RUBY_VERSION=version
	try:
		ver=tuple(map(int,version.split(".")))
	except:
		self.fatal('unsupported ruby version %r'%version)
	cver=''
	if minver:
		if ver<minver:
			self.fatal('ruby is too old %r'%ver)
		cver='.'.join([str(x)for x in minver])
	else:
		cver=ver
	self.msg('Checking for ruby version %s'%str(minver or''),cver)
def check_ruby_ext_devel(self):
	if not self.env.RUBY:
		self.fatal('ruby detection is required first')
	if not self.env.CC_NAME and not self.env.CXX_NAME:
		self.fatal('load a c/c++ compiler first')
	version=tuple(map(int,self.env.RUBY_VERSION.split(".")))
	def read_out(cmd):
		return Utils.to_list(self.cmd_and_log([self.env.RUBY,'-rrbconfig','-e',cmd]))
	def read_config(key):
		return read_out('puts Config::CONFIG[%r]'%key)
	ruby=self.env['RUBY']
	archdir=read_config('archdir')
	cpppath=archdir
	if version>=(1,9,0):
		ruby_hdrdir=read_config('rubyhdrdir')
		cpppath+=ruby_hdrdir
		cpppath+=[os.path.join(ruby_hdrdir[0],read_config('arch')[0])]
	self.check(header_name='ruby.h',includes=cpppath,errmsg='could not find ruby header file')
	self.env.LIBPATH_RUBYEXT=read_config('libdir')
	self.env.LIBPATH_RUBYEXT+=archdir
	self.env.INCLUDES_RUBYEXT=cpppath
	self.env.CFLAGS_RUBYEXT=read_config('CCDLFLAGS')
	self.env.rubyext_PATTERN='%s.'+read_config('DLEXT')[0]
	flags=read_config('LDSHARED')
	while flags and flags[0][0]!='-':
		flags=flags[1:]
	if len(flags)>1 and flags[1]=="ppc":
		flags=flags[2:]
	self.env.LINKFLAGS_RUBYEXT=flags
	self.env.LINKFLAGS_RUBYEXT+=read_config('LIBS')
	self.env.LINKFLAGS_RUBYEXT+=read_config('LIBRUBYARG_SHARED')
	if Options.options.rubyarchdir:
		self.env.ARCHDIR_RUBY=Options.options.rubyarchdir
	else:
		self.env.ARCHDIR_RUBY=read_config('sitearchdir')[0]
	if Options.options.rubylibdir:
		self.env.LIBDIR_RUBY=Options.options.rubylibdir
	else:
		self.env.LIBDIR_RUBY=read_config('sitelibdir')[0]
def check_ruby_module(self,module_name):
	self.start_msg('Ruby module %s'%module_name)
	try:
		self.cmd_and_log([self.env['RUBY'],'-e','require \'%s\';puts 1'%module_name])
	except:
		self.end_msg(False)
		self.fatal('Could not find the ruby module %r'%module_name)
	self.end_msg(True)
def process(self,node):
	tsk=self.create_task('run_ruby',node)
class run_ruby(Task.Task):
	run_str='${RUBY} ${RBFLAGS} -I ${SRC[0].parent.abspath()} ${SRC}'
def options(opt):
	opt.add_option('--with-ruby-archdir',type='string',dest='rubyarchdir',help='Specify directory where to install arch specific files')
	opt.add_option('--with-ruby-libdir',type='string',dest='rubylibdir',help='Specify alternate ruby library path')
	opt.add_option('--with-ruby-binary',type='string',dest='rubybinary',help='Specify alternate ruby binary')

feature('rubyext')(init_rubyext)
before_method('apply_incpaths','apply_lib_vars','apply_bundle','apply_link')(init_rubyext)
feature('rubyext')(apply_ruby_so_name)
before_method('apply_link','propagate_uselib')(apply_ruby_so_name)
conf(check_ruby_version)
conf(check_ruby_ext_devel)
conf(check_ruby_module)
extension('.rb')(process)