buildtools/wafsamba/samba_optimisation.py

   1 # This file contains waf optimisations for Samba
   2
   3 # most of these optimisations are possible because of the restricted build environment
   4 # that Samba has. For example, Samba doesn't attempt to cope with Win32 paths during the
   5 # build, and Samba doesn't need build varients
   6
   7 # overall this makes some build tasks quite a bit faster
   8
   9 from TaskGen import feature, after
  10 import preproc
  11
  12 kak = {}
  13 @feature('cc', 'cxx')
  14 @after('apply_type_vars', 'apply_lib_vars', 'apply_core')
  15 def apply_incpaths(self):
  16         lst = []
  17         # TODO move the uselib processing out of here
  18         for lib in self.to_list(self.uselib):
  19                 for path in self.env['CPPPATH_' + lib]:
  20                         if not path in lst:
  21                                 lst.append(path)
  22         if preproc.go_absolute:
  23                 for path in preproc.standard_includes:
  24                         if not path in lst:
  25                                 lst.append(path)
  26
  27         for path in self.to_list(self.includes):
  28                 if not path in lst:
  29                         if preproc.go_absolute or path[0] != '/': #os.path.isabs(path):
  30                                 lst.append(path)
  31                         else:
  32                                 self.env.prepend_value('CPPPATH', path)
  33
  34         for path in lst:
  35                 node = None
  36                 if path[0] == '/': # os.path.isabs(path):
  37                         if preproc.go_absolute:
  38                                 node = self.bld.root.find_dir(path)
  39                 elif path[0] == '#':
  40                         node = self.bld.srcnode
  41                         if len(path) > 1:
  42                                 try:
  43                                         node = kak[path]
  44                                 except KeyError:
  45                                         kak[path] = node = node.find_dir(path[1:])
  46                 else:
  47                         try:
  48                                 node = kak[(self.path.id, path)]
  49                         except KeyError:
  50                                 kak[(self.path.id, path)] = node = self.path.find_dir(path)
  51
  52                 if node:
  53                         self.env.append_value('INC_PATHS', node)
  54
  55 cac = {}
  56 @feature('cc')
  57 @after('apply_incpaths')
  58 def apply_obj_vars_cc(self):
  59     """after apply_incpaths for INC_PATHS"""
  60     env = self.env
  61     app = env.append_unique
  62     cpppath_st = env['CPPPATH_ST']
  63
  64     lss = env['_CCINCFLAGS']
  65
  66     global cac
  67
  68     # local flags come first
  69     # set the user-defined includes paths
  70     for i in env['INC_PATHS']:
  71
  72         try:
  73             lss.extend(cac[i.id])
  74         except KeyError:
  75
  76             cac[i.id] = [cpppath_st % i.bldpath(env), cpppath_st % i.srcpath(env)]
  77             lss.extend(cac[i.id])
  78
  79     env['_CCINCFLAGS'] = lss
  80     # set the library include paths
  81     for i in env['CPPPATH']:
  82         app('_CCINCFLAGS', cpppath_st % i)
  83
  84 import Node, Environment
  85
  86 def vari(self):
  87         return "default"
  88 Environment.Environment.variant = vari
  89
  90 def variant(self, env):
  91         if not env: return 0
  92         elif self.id & 3 == Node.FILE: return 0
  93         else: return "default"
  94 Node.Node.variant = variant
  95
  96
  97 import TaskGen, Task
  98
  99 def create_task(self, name, src=None, tgt=None):
 100     task = Task.TaskBase.classes[name](self.env, generator=self)
 101     if src:
 102         task.set_inputs(src)
 103     if tgt:
 104         task.set_outputs(tgt)
 105     return task
 106 TaskGen.task_gen.create_task = create_task
 107
 108 def hash_constraints(self):
 109         a = self.attr
 110         sum = hash((str(a('before', '')),
 111             str(a('after', '')),
 112             str(a('ext_in', '')),
 113             str(a('ext_out', '')),
 114             self.__class__.maxjobs))
 115         return sum
 116 Task.TaskBase.hash_constraints = hash_constraints
 117
 118
 119 # import cc
 120 # from TaskGen import extension
 121 # import Utils
 122
 123 # @extension(cc.EXT_CC)
 124 # def c_hook(self, node):
 125 #       task = self.create_task('cc', node, node.change_ext('.o'))
 126 #       try:
 127 #               self.compiled_tasks.append(task)
 128 #       except AttributeError:
 129 #               raise Utils.WafError('Have you forgotten to set the feature "cc" on %s?' % str(self))
 130
 131 #       bld = self.bld
 132 #       try:
 133 #               dc = bld.dc
 134 #       except AttributeError:
 135 #               dc = bld.dc = {}
 136
 137 #       if task.outputs[0].id in dc:
 138 #               raise Utils.WafError('Samba, you are doing it wrong %r %s %s' % (task.outputs, task.generator, dc[task.outputs[0].id].generator))
 139 #       else:
 140 #               dc[task.outputs[0].id] = task
 141
 142 #       return task
 143