mirror of https://gitlab.com/ita1024/waf.git
47 lines
1019 B
Python
47 lines
1019 B
Python
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#!/usr/bin/env python
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# encoding: utf-8
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# John O'Meara, 2006
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# Thomas Nagy, 2006-2010 (ita)
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"""
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The **flex** program is a code generator which creates C or C++ files.
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The generated files are compiled into object files.
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"""
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import waflib.TaskGen
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def decide_ext(self, node):
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if 'cxx' in self.features:
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return ['.lex.cc']
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return ['.lex.c']
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def flexfun(tsk):
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env = tsk.env
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bld = tsk.generator.bld
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wd = bld.variant_dir
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def to_list(xx):
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if isinstance(xx, str): return [xx]
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return xx
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tsk.last_cmd = lst = []
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lst.extend(to_list(env['FLEX']))
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lst.extend(to_list(env['FLEXFLAGS']))
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lst.extend([a.path_from(bld.bldnode) for a in tsk.inputs])
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lst = [x for x in lst if x]
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txt = bld.cmd_and_log(lst, cwd=wd, env=env.env or None, quiet=0)
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tsk.outputs[0].write(txt)
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waflib.TaskGen.declare_chain(
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name = 'flex',
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rule = flexfun, # issue #854
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ext_in = '.l',
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decider = decide_ext,
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)
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def configure(conf):
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"""
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Detect the *flex* program
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"""
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conf.find_program('flex', var='FLEX')
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conf.env.FLEXFLAGS = ['-t']
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