1 # This file contains waf optimisations for Samba
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
7 # overall this makes some build tasks quite a bit faster
9 import Build, Utils, Node
10 from TaskGen import feature, after
14 @after('apply_type_vars', 'apply_lib_vars', 'apply_core')
15 def apply_incpaths(self):
20 except AttributeError:
21 kak = self.bld.kak = {}
23 # TODO move the uselib processing out of here
24 for lib in self.to_list(self.uselib):
25 for path in self.env['CPPPATH_' + lib]:
28 if preproc.go_absolute:
29 for path in preproc.standard_includes:
33 for path in self.to_list(self.includes):
35 if preproc.go_absolute or path[0] != '/': # os.path.isabs(path):
38 self.env.prepend_value('CPPPATH', path)
42 if path[0] == '/': # os.path.isabs(path):
43 if preproc.go_absolute:
44 node = self.bld.root.find_dir(path)
46 node = self.bld.srcnode
51 kak[path] = node = node.find_dir(path[1:])
54 node = kak[(self.path.id, path)]
56 kak[(self.path.id, path)] = node = self.path.find_dir(path)
59 self.env.append_value('INC_PATHS', node)
62 @after('apply_incpaths')
63 def apply_obj_vars_cc(self):
64 """after apply_incpaths for INC_PATHS"""
66 app = env.append_unique
67 cpppath_st = env['CPPPATH_ST']
69 lss = env['_CCINCFLAGS']
73 except AttributeError:
74 cac = self.bld.cac = {}
76 # local flags come first
77 # set the user-defined includes paths
78 for i in env['INC_PATHS']:
84 cac[i.id] = [cpppath_st % i.bldpath(env), cpppath_st % i.srcpath(env)]
87 env['_CCINCFLAGS'] = lss
88 # set the library include paths
89 for i in env['CPPPATH']:
90 app('_CCINCFLAGS', cpppath_st % i)
92 import Node, Environment
96 Environment.Environment.variant = vari
98 def variant(self, env):
100 elif self.id & 3 == Node.FILE: return 0
101 else: return "default"
102 Node.Node.variant = variant
107 def create_task(self, name, src=None, tgt=None):
108 task = Task.TaskBase.classes[name](self.env, generator=self)
112 task.set_outputs(tgt)
114 TaskGen.task_gen.create_task = create_task
116 def hash_constraints(self):
118 sum = hash((str(a('before', '')),
120 str(a('ext_in', '')),
121 str(a('ext_out', '')),
122 self.__class__.maxjobs))
124 Task.TaskBase.hash_constraints = hash_constraints
128 # from TaskGen import extension
131 # @extension(cc.EXT_CC)
132 # def c_hook(self, node):
133 # task = self.create_task('cc', node, node.change_ext('.o'))
135 # self.compiled_tasks.append(task)
136 # except AttributeError:
137 # raise Utils.WafError('Have you forgotten to set the feature "cc" on %s?' % str(self))
142 # except AttributeError:
145 # if task.outputs[0].id in dc:
146 # raise Utils.WafError('Samba, you are doing it wrong %r %s %s' % (task.outputs, task.generator, dc[task.outputs[0].id].generator))
148 # dc[task.outputs[0].id] = task
154 '''work around a problem with cc on solaris not handling module aliases
155 which have empty libs'''
156 if getattr(cls, 'solaris_wrap', False):
158 cls.solaris_wrap = True
161 if self.env.CC_NAME == "sun" and not self.inputs:
162 self.env = self.env.copy()
163 self.env.append_value('LINKFLAGS', '-')
166 suncc_wrap(Task.TaskBase.classes['cc_link'])
170 def hash_env_vars(self, env, vars_lst):
171 idx = str(id(env)) + str(vars_lst)
173 return self.cache_sig_vars[idx]
178 m.update(''.join([str(env[a]) for a in vars_lst]))
180 ret = self.cache_sig_vars[idx] = m.digest()
182 Build.BuildContext.hash_env_vars = hash_env_vars
185 def store_fast(self, filename):
186 file = open(filename, 'wb')
187 data = self.get_merged_dict()
189 Build.cPickle.dump(data, file, -1)
192 Environment.Environment.store_fast = store_fast
194 def load_fast(self, filename):
195 file = open(filename, 'rb')
197 data = Build.cPickle.load(file)
200 self.table.update(data)
201 Environment.Environment.load_fast = load_fast
203 def is_this_a_static_lib(self, name):
205 cache = self.cache_is_this_a_static_lib
206 except AttributeError:
207 cache = self.cache_is_this_a_static_lib = {}
211 ret = cache[name] = 'cstaticlib' in self.bld.name_to_obj(name, self.env).features
213 TaskGen.task_gen.is_this_a_static_lib = is_this_a_static_lib
215 def shared_ancestors(self):
217 cache = self.cache_is_this_a_static_lib
218 except AttributeError:
219 cache = self.cache_is_this_a_static_lib = {}
221 return cache[id(self)]
225 if 'cshlib' in self.features: # or 'cprogram' in self.features:
226 if getattr(self, 'uselib_local', None):
227 lst = self.to_list(self.uselib_local)
228 ret = [x for x in lst if not self.is_this_a_static_lib(x)]
229 cache[id(self)] = ret
231 TaskGen.task_gen.shared_ancestors = shared_ancestors
233 @feature('cc', 'cxx')
234 @after('apply_link', 'init_cc', 'init_cxx', 'apply_core')
235 def apply_lib_vars(self):
236 """after apply_link because of 'link_task'
237 after default_cc because of the attribute 'uselib'"""
239 # after 'apply_core' in case if 'cc' if there is no link
242 app = env.append_value
243 seen_libpaths = set([])
245 # OPTIMIZATION 1: skip uselib variables already added (700ms)
246 seen_uselib = set([])
248 # 1. the case of the libs defined in the project (visit ancestors first)
249 # the ancestors external libraries (uselib) will be prepended
250 self.uselib = self.to_list(self.uselib)
251 names = self.to_list(self.uselib_local)
254 tmp = Utils.deque(names) # consume a copy of the list of names
256 lib_name = tmp.popleft()
257 # visit dependencies only once
261 y = self.name_to_obj(lib_name)
263 raise Utils.WafError('object %r was not found in uselib_local (required by %r)' % (lib_name, self.name))
267 # OPTIMIZATION 2: pre-compute ancestors shared libraries (100ms)
268 tmp.extend(y.shared_ancestors())
270 # link task and flags
271 if getattr(y, 'link_task', None):
273 link_name = y.target[y.target.rfind('/') + 1:]
274 if 'cstaticlib' in y.features:
275 app('STATICLIB', link_name)
276 elif 'cshlib' in y.features or 'cprogram' in y.features:
277 # WARNING some linkers can link against programs
278 app('LIB', link_name)
281 self.link_task.set_run_after(y.link_task)
283 # for the recompilation
284 dep_nodes = getattr(self.link_task, 'dep_nodes', [])
285 self.link_task.dep_nodes = dep_nodes + y.link_task.outputs
287 # OPTIMIZATION 3: reduce the amount of function calls
288 # add the link path too
289 par = y.link_task.outputs[0].parent
290 if id(par) not in seen_libpaths:
291 seen_libpaths.add(id(par))
292 tmp_path = par.bldpath(self.env)
293 if not tmp_path in env['LIBPATH']:
294 env.prepend_value('LIBPATH', tmp_path)
297 # add ancestors uselib too - but only propagate those that have no staticlib
298 for v in self.to_list(y.uselib):
299 if v not in seen_uselib:
301 if not env['STATICLIB_' + v]:
302 if not v in self.uselib:
303 self.uselib.insert(0, v)
305 # 2. the case of the libs defined outside
306 for x in self.uselib:
307 for v in self.p_flag_vars:
308 val = self.env[v + '_' + x]
310 self.env.append_value(v, val)