mirror of https://gitlab.com/ita1024/waf.git
238 lines
6.1 KiB
Python
238 lines
6.1 KiB
Python
#! /usr/bin/env python
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# encoding: UTF-8
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# Petar Forai
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# Thomas Nagy 2008-2010 (ita)
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import re
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from waflib import Task, Logs
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from waflib.TaskGen import extension, feature, after_method
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from waflib.Configure import conf
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from waflib.Tools import c_preproc
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"""
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tasks have to be added dynamically:
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- swig interface files may be created at runtime
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- the module name may be unknown in advance
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"""
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SWIG_EXTS = ['.swig', '.i']
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re_module = re.compile(r'%module(?:\s*\(.*\))?\s+(.+)', re.M)
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re_1 = re.compile(r'^%module.*?\s+([\w]+)\s*?$', re.M)
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re_2 = re.compile(r'[#%](?:include|import(?:\(module=".*"\))+|python(?:begin|code)) [<"](.*)[">]', re.M)
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class swig(Task.Task):
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color = 'BLUE'
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run_str = '${SWIG} ${SWIGFLAGS} ${SWIGPATH_ST:INCPATHS} ${SWIGDEF_ST:DEFINES} ${SRC}'
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ext_out = ['.h'] # might produce .h files although it is not mandatory
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vars = ['SWIG_VERSION', 'SWIGDEPS']
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def runnable_status(self):
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for t in self.run_after:
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if not t.hasrun:
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return Task.ASK_LATER
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if not getattr(self, 'init_outputs', None):
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self.init_outputs = True
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if not getattr(self, 'module', None):
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# search the module name
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txt = self.inputs[0].read()
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m = re_module.search(txt)
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if not m:
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raise ValueError("could not find the swig module name")
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self.module = m.group(1)
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swig_c(self)
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# add the language-specific output files as nodes
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# call funs in the dict swig_langs
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for x in self.env['SWIGFLAGS']:
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# obtain the language
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x = x[1:]
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try:
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fun = swig_langs[x]
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except KeyError:
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pass
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else:
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fun(self)
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return super(swig, self).runnable_status()
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def scan(self):
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"scan for swig dependencies, climb the .i files"
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lst_src = []
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seen = []
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missing = []
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to_see = [self.inputs[0]]
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while to_see:
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node = to_see.pop(0)
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if node in seen:
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continue
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seen.append(node)
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lst_src.append(node)
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# read the file
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code = node.read()
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code = c_preproc.re_nl.sub('', code)
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code = c_preproc.re_cpp.sub(c_preproc.repl, code)
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# find .i files and project headers
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names = re_2.findall(code)
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for n in names:
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for d in self.generator.includes_nodes + [node.parent]:
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u = d.find_resource(n)
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if u:
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to_see.append(u)
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break
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else:
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missing.append(n)
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return (lst_src, missing)
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# provide additional language processing
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swig_langs = {}
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def swigf(fun):
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swig_langs[fun.__name__.replace('swig_', '')] = fun
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return fun
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swig.swigf = swigf
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def swig_c(self):
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ext = '.swigwrap_%d.c' % self.generator.idx
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flags = self.env['SWIGFLAGS']
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if '-c++' in flags:
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ext += 'xx'
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out_node = self.inputs[0].parent.find_or_declare(self.module + ext)
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if '-c++' in flags:
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c_tsk = self.generator.cxx_hook(out_node)
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else:
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c_tsk = self.generator.c_hook(out_node)
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c_tsk.set_run_after(self)
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# transfer weights from swig task to c task
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if getattr(self, 'weight', None):
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c_tsk.weight = self.weight
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if getattr(self, 'tree_weight', None):
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c_tsk.tree_weight = self.tree_weight
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try:
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self.more_tasks.append(c_tsk)
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except AttributeError:
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self.more_tasks = [c_tsk]
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try:
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ltask = self.generator.link_task
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except AttributeError:
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pass
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else:
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ltask.set_run_after(c_tsk)
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# setting input nodes does not declare the build order
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# because the build already started, but it sets
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# the dependency to enable rebuilds
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ltask.inputs.append(c_tsk.outputs[0])
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self.outputs.append(out_node)
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if not '-o' in self.env['SWIGFLAGS']:
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self.env.append_value('SWIGFLAGS', ['-o', self.outputs[0].abspath()])
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@swigf
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def swig_python(tsk):
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node = tsk.inputs[0].parent
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if tsk.outdir:
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node = tsk.outdir
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tsk.set_outputs(node.find_or_declare(tsk.module+'.py'))
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@swigf
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def swig_ocaml(tsk):
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node = tsk.inputs[0].parent
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if tsk.outdir:
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node = tsk.outdir
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tsk.set_outputs(node.find_or_declare(tsk.module+'.ml'))
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tsk.set_outputs(node.find_or_declare(tsk.module+'.mli'))
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@extension(*SWIG_EXTS)
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def i_file(self, node):
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# the task instance
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tsk = self.create_task('swig')
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tsk.set_inputs(node)
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tsk.module = getattr(self, 'swig_module', None)
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flags = self.to_list(getattr(self, 'swig_flags', []))
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tsk.env.append_value('SWIGFLAGS', flags)
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tsk.outdir = None
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if '-outdir' in flags:
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outdir = flags[flags.index('-outdir')+1]
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outdir = tsk.generator.bld.bldnode.make_node(outdir)
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outdir.mkdir()
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tsk.outdir = outdir
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@feature('c', 'cxx', 'd', 'fc', 'asm')
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@after_method('apply_link', 'process_source')
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def enforce_swig_before_link(self):
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try:
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link_task = self.link_task
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except AttributeError:
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pass
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else:
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for x in self.tasks:
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if x.__class__.__name__ == 'swig':
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link_task.run_after.add(x)
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@conf
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def check_swig_version(conf, minver=None):
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"""
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Check if the swig tool is found matching a given minimum version.
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minver should be a tuple, eg. to check for swig >= 1.3.28 pass (1,3,28) as minver.
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If successful, SWIG_VERSION is defined as 'MAJOR.MINOR'
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(eg. '1.3') of the actual swig version found.
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:param minver: minimum version
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:type minver: tuple of int
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:return: swig version
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:rtype: tuple of int
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"""
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assert minver is None or isinstance(minver, tuple)
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swigbin = conf.env['SWIG']
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if not swigbin:
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conf.fatal('could not find the swig executable')
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# Get swig version string
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cmd = swigbin + ['-version']
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Logs.debug('swig: Running swig command %r', cmd)
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reg_swig = re.compile(r'SWIG Version\s(.*)', re.M)
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swig_out = conf.cmd_and_log(cmd)
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swigver_tuple = tuple([int(s) for s in reg_swig.findall(swig_out)[0].split('.')])
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# Compare swig version with the minimum required
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result = (minver is None) or (swigver_tuple >= minver)
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if result:
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# Define useful environment variables
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swigver = '.'.join([str(x) for x in swigver_tuple[:2]])
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conf.env['SWIG_VERSION'] = swigver
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# Feedback
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swigver_full = '.'.join(map(str, swigver_tuple[:3]))
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if minver is None:
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conf.msg('Checking for swig version', swigver_full)
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else:
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minver_str = '.'.join(map(str, minver))
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conf.msg('Checking for swig version >= %s' % (minver_str,), swigver_full, color=result and 'GREEN' or 'YELLOW')
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if not result:
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conf.fatal('The swig version is too old, expecting %r' % (minver,))
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return swigver_tuple
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def configure(conf):
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conf.find_program('swig', var='SWIG')
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conf.env.SWIGPATH_ST = '-I%s'
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conf.env.SWIGDEF_ST = '-D%s'
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