buildtools/wafadmin/3rdparty/swig.py

   1 #! /usr/bin/env python
   2 # encoding: UTF-8
   3 # Petar Forai
   4 # Thomas Nagy 2008
   5
   6 import re
   7 import Task, Utils, Logs
   8 from TaskGen import extension
   9 from Configure import conf
  10 import preproc
  11
  12 """
  13 Welcome in the hell of adding tasks dynamically
  14
  15 swig interface files may be created at runtime, the module name may be unknown in advance
  16
  17 rev 5859 is much more simple
  18 """
  19
  20 SWIG_EXTS = ['.swig', '.i']
  21
  22 swig_str = '${SWIG} ${SWIGFLAGS} ${_CCINCFLAGS} ${_CXXINCFLAGS} ${_CCDEFFLAGS} ${_CXXDEFFLAGS} ${SRC}'
  23 cls = Task.simple_task_type('swig', swig_str, color='BLUE', ext_in='.i .h', ext_out='.o .c .cxx', shell=False)
  24
  25 def runnable_status(self):
  26         for t in self.run_after:
  27                 if not t.hasrun:
  28                         return ASK_LATER
  29
  30         if not getattr(self, 'init_outputs', None):
  31                 self.init_outputs = True
  32                 if not getattr(self, 'module', None):
  33                         # search the module name
  34                         txt = self.inputs[0].read(self.env)
  35                         m = re_module.search(txt)
  36                         if not m:
  37                                 raise ValueError("could not find the swig module name")
  38                         self.module = m.group(1)
  39
  40                 swig_c(self)
  41
  42                 # add the language-specific output files as nodes
  43                 # call funs in the dict swig_langs
  44                 for x in self.env['SWIGFLAGS']:
  45                         # obtain the language
  46                         x = x[1:]
  47                         try:
  48                                 fun = swig_langs[x]
  49                         except KeyError:
  50                                 pass
  51                         else:
  52                                 fun(self)
  53
  54         return Task.Task.runnable_status(self)
  55 setattr(cls, 'runnable_status', runnable_status)
  56
  57 re_module = re.compile('%module(?:\s*\(.*\))?\s+(.+)', re.M)
  58
  59 re_1 = re.compile(r'^%module.*?\s+([\w]+)\s*?$', re.M)
  60 re_2 = re.compile('%include "(.*)"', re.M)
  61 re_3 = re.compile('#include "(.*)"', re.M)
  62
  63 def scan(self):
  64         "scan for swig dependencies, climb the .i files"
  65         env = self.env
  66
  67         lst_src = []
  68
  69         seen = []
  70         to_see = [self.inputs[0]]
  71
  72         while to_see:
  73                 node = to_see.pop(0)
  74                 if node.id in seen:
  75                         continue
  76                 seen.append(node.id)
  77                 lst_src.append(node)
  78
  79                 # read the file
  80                 code = node.read(env)
  81                 code = preproc.re_nl.sub('', code)
  82                 code = preproc.re_cpp.sub(preproc.repl, code)
  83
  84                 # find .i files and project headers
  85                 names = re_2.findall(code) + re_3.findall(code)
  86                 for n in names:
  87                         for d in self.generator.env.INC_PATHS + [node.parent]:
  88                                 u = d.find_resource(n)
  89                                 if u:
  90                                         to_see.append(u)
  91                                         break
  92                         else:
  93                                 Logs.warn('could not find %r' % n)
  94
  95         # list of nodes this one depends on, and module name if present
  96         if Logs.verbose:
  97                 Logs.debug('deps: deps for %s: %s' % (str(self), str(lst_src)))
  98         return (lst_src, [])
  99 cls.scan = scan
 100
 101 # provide additional language processing
 102 swig_langs = {}
 103 def swig(fun):
 104         swig_langs[fun.__name__.replace('swig_', '')] = fun
 105
 106 def swig_c(self):
 107         ext = '.swigwrap_%d.c' % self.generator.idx
 108         flags = self.env['SWIGFLAGS']
 109         if '-c++' in flags:
 110                 ext += 'xx'
 111         out_node = self.inputs[0].parent.find_or_declare(self.module + ext)
 112
 113         try:
 114                 if '-c++' in flags:
 115                         fun = self.generator.cxx_hook
 116                 else:
 117                         fun = self.generator.c_hook
 118         except AttributeError:
 119                 raise Utils.WafError('No c%s compiler was found to process swig files' % ('-c++' in flags and '++' or ''))
 120
 121         task = fun(out_node)
 122         task.set_run_after(self)
 123
 124         ge = self.generator.bld.generator
 125         ge.outstanding.insert(0, task)
 126         ge.total += 1
 127
 128         try:
 129                 ltask = self.generator.link_task
 130         except AttributeError:
 131                 pass
 132         else:
 133                 ltask.inputs.append(task.outputs[0])
 134
 135         self.outputs.append(out_node)
 136
 137         if not '-o' in self.env['SWIGFLAGS']:
 138                 self.env.append_value('SWIGFLAGS', '-o')
 139                 self.env.append_value('SWIGFLAGS', self.outputs[0].abspath(self.env))
 140
 141 @swig
 142 def swig_python(tsk):
 143         tsk.set_outputs(tsk.inputs[0].parent.find_or_declare(tsk.module + '.py'))
 144
 145 @swig
 146 def swig_ocaml(tsk):
 147         tsk.set_outputs(tsk.inputs[0].parent.find_or_declare(tsk.module + '.ml'))
 148         tsk.set_outputs(tsk.inputs[0].parent.find_or_declare(tsk.module + '.mli'))
 149
 150 @extension(SWIG_EXTS)
 151 def i_file(self, node):
 152         # the task instance
 153         tsk = self.create_task('swig')
 154         tsk.set_inputs(node)
 155         tsk.module = getattr(self, 'swig_module', None)
 156
 157         flags = self.to_list(getattr(self, 'swig_flags', []))
 158         self.env.append_value('SWIGFLAGS', flags)
 159
 160         if not '-outdir' in flags:
 161                 flags.append('-outdir')
 162                 flags.append(node.parent.abspath(self.env))
 163
 164 @conf
 165 def check_swig_version(conf, minver=None):
 166         """Check for a minimum swig version like conf.check_swig_version('1.3.28')
 167         or conf.check_swig_version((1,3,28)) """
 168         reg_swig = re.compile(r'SWIG Version\s(.*)', re.M)
 169
 170         swig_out = Utils.cmd_output('%s -version' % conf.env['SWIG'])
 171
 172         swigver = [int(s) for s in reg_swig.findall(swig_out)[0].split('.')]
 173         if isinstance(minver, basestring):
 174                 minver = [int(s) for s in minver.split(".")]
 175         if isinstance(minver, tuple):
 176                 minver = [int(s) for s in minver]
 177         result = (minver is None) or (minver[:3] <= swigver[:3])
 178         swigver_full = '.'.join(map(str, swigver))
 179         if result:
 180                 conf.env['SWIG_VERSION'] = swigver_full
 181         minver_str = '.'.join(map(str, minver))
 182         if minver is None:
 183                 conf.check_message_custom('swig version', '', swigver_full)
 184         else:
 185                 conf.check_message('swig version', '>= %s' % (minver_str,), result, option=swigver_full)
 186         return result
 187
 188 def detect(conf):
 189         swig = conf.find_program('swig', var='SWIG', mandatory=True)
 190