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, Task
  11
  12 @feature('cc', 'cxx')
  13 @after('apply_type_vars', 'apply_lib_vars', 'apply_core')
  14 def apply_incpaths(self):
  15     lst = []
  16
  17     try:
  18         kak = self.bld.kak
  19     except AttributeError:
  20         kak = self.bld.kak = {}
  21
  22     # TODO move the uselib processing out of here
  23     for lib in self.to_list(self.uselib):
  24         for path in self.env['CPPPATH_' + lib]:
  25             if not path in lst:
  26                 lst.append(path)
  27     if preproc.go_absolute:
  28         for path in preproc.standard_includes:
  29             if not path in lst:
  30                 lst.append(path)
  31
  32     for path in self.to_list(self.includes):
  33         if not path in lst:
  34             if preproc.go_absolute or path[0] != '/': #os.path.isabs(path):
  35                 lst.append(path)
  36             else:
  37                 self.env.prepend_value('CPPPATH', path)
  38
  39     for path in lst:
  40         node = None
  41         if path[0] == '/': # os.path.isabs(path):
  42             if preproc.go_absolute:
  43                 node = self.bld.root.find_dir(path)
  44         elif path[0] == '#':
  45             node = self.bld.srcnode
  46             if len(path) > 1:
  47                 try:
  48                     node = kak[path]
  49                 except KeyError:
  50                     kak[path] = node = node.find_dir(path[1:])
  51         else:
  52             try:
  53                 node = kak[(self.path.id, path)]
  54             except KeyError:
  55                 kak[(self.path.id, path)] = node = self.path.find_dir(path)
  56
  57         if node:
  58             self.env.append_value('INC_PATHS', node)
  59
  60 @feature('cc')
  61 @after('apply_incpaths')
  62 def apply_obj_vars_cc(self):
  63     """after apply_incpaths for INC_PATHS"""
  64     env = self.env
  65     app = env.append_unique
  66     cpppath_st = env['CPPPATH_ST']
  67
  68     lss = env['_CCINCFLAGS']
  69
  70     try:
  71          cac = self.bld.cac
  72     except AttributeError:
  73          cac = self.bld.cac = {}
  74
  75     # local flags come first
  76     # set the user-defined includes paths
  77     for i in env['INC_PATHS']:
  78
  79         try:
  80             lss.extend(cac[i.id])
  81         except KeyError:
  82
  83             cac[i.id] = [cpppath_st % i.bldpath(env), cpppath_st % i.srcpath(env)]
  84             lss.extend(cac[i.id])
  85
  86     env['_CCINCFLAGS'] = lss
  87     # set the library include paths
  88     for i in env['CPPPATH']:
  89         app('_CCINCFLAGS', cpppath_st % i)
  90
  91 import Node, Environment
  92
  93 def vari(self):
  94     return "default"
  95 Environment.Environment.variant = vari
  96
  97 def variant(self, env):
  98     if not env: return 0
  99     elif self.id & 3 == Node.FILE: return 0
 100     else: return "default"
 101 Node.Node.variant = variant
 102
 103
 104 import TaskGen, Task
 105
 106 def create_task(self, name, src=None, tgt=None):
 107     task = Task.TaskBase.classes[name](self.env, generator=self)
 108     if src:
 109         task.set_inputs(src)
 110     if tgt:
 111         task.set_outputs(tgt)
 112     return task
 113 TaskGen.task_gen.create_task = create_task
 114
 115 def hash_constraints(self):
 116     a = self.attr
 117     sum = hash((str(a('before', '')),
 118             str(a('after', '')),
 119             str(a('ext_in', '')),
 120             str(a('ext_out', '')),
 121             self.__class__.maxjobs))
 122     return sum
 123 Task.TaskBase.hash_constraints = hash_constraints
 124
 125
 126 # import cc
 127 # from TaskGen import extension
 128 # import Utils
 129
 130 # @extension(cc.EXT_CC)
 131 # def c_hook(self, node):
 132 #     task = self.create_task('cc', node, node.change_ext('.o'))
 133 #     try:
 134 #         self.compiled_tasks.append(task)
 135 #     except AttributeError:
 136 #         raise Utils.WafError('Have you forgotten to set the feature "cc" on %s?' % str(self))
 137
 138 #     bld = self.bld
 139 #     try:
 140 #         dc = bld.dc
 141 #     except AttributeError:
 142 #         dc = bld.dc = {}
 143
 144 #     if task.outputs[0].id in dc:
 145 #         raise Utils.WafError('Samba, you are doing it wrong %r %s %s' % (task.outputs, task.generator, dc[task.outputs[0].id].generator))
 146 #     else:
 147 #         dc[task.outputs[0].id] = task
 148
 149 #     return task
 150
 151
 152 def suncc_wrap(cls):
 153     '''work around a problem with cc on solaris not handling module aliases
 154     which have empty libs'''
 155     if getattr(cls, 'solaris_wrap', False):
 156         return
 157     cls.solaris_wrap = True
 158     oldrun = cls.run
 159     def run(self):
 160         if self.env.CC_NAME == "sun" and not self.inputs:
 161             self.env = self.env.copy()
 162             self.env.append_value('LINKFLAGS', '-')
 163         return oldrun(self)
 164     cls.run = run
 165 suncc_wrap(Task.TaskBase.classes['cc_link'])