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#! /usr/bin/env python
# encoding: utf-8
# WARNING! Do not edit! https://waf.io/book/index.html#_obtaining_the_waf_file
import os, re
from waflib import Task, TaskGen
from waflib.Tools import ccroot
def decide_ext(self, node):
if 'cxx' in self.features:
return ['.lex.cc']
return ['.lex.c']
def flexfun(tsk):
env = tsk.env
bld = tsk.generator.bld
wd = bld.variant_dir
def to_list(xx):
if isinstance(xx, str):
return [xx]
return xx
tsk.last_cmd = lst = []
lst.extend(to_list(env.FLEX))
lst.extend(to_list(env.FLEXFLAGS))
inputs = [a.path_from(tsk.get_cwd()) for a in tsk.inputs]
if env.FLEX_MSYS:
inputs = [x.replace(os.sep, '/') for x in inputs]
lst.extend(inputs)
lst = [x for x in lst if x]
txt = bld.cmd_and_log(lst, cwd=wd, env=env.env or None, quiet=0)
tsk.outputs[0].write(txt.replace('\r\n', '\n').replace('\r', '\n'))
TaskGen.declare_chain(
name='flex',
rule=flexfun,
ext_in='.l',
decider=decide_ext,
)
Task.classes['flex'].vars = ['FLEXFLAGS', 'FLEX']
ccroot.USELIB_VARS['c'].add('FLEXFLAGS')
ccroot.USELIB_VARS['cxx'].add('FLEXFLAGS')
def configure(conf):
conf.find_program('flex', var='FLEX')
conf.env.FLEXFLAGS = ['-t']
if re.search(r"\\msys\\[0-9.]+\\bin\\flex.exe$", conf.env.FLEX[0]):
conf.env.FLEX_MSYS = True
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