1 # a waf tool to add autoconf-like macros to the configure section
2 # and for SAMBA_ macros for building libraries, binaries etc
4 import Build, os, sys, Options, Utils
5 from TaskGen import feature, before
6 from Configure import conf
10 # TODO: make this a --option
14 ##########################################################
15 # create a node with a new name, based on an existing node
16 def NEW_NODE(node, name):
17 ret = node.parent.find_or_declare([name])
18 ASSERT(node, ret is not None, "Unable to find new target with name '%s' from '%s'" % (
23 #############################################################
24 # set a value in a local cache
25 # return False if it's already set
26 def SET_TARGET_TYPE(ctx, target, value):
27 cache = LOCAL_CACHE(ctx, 'TARGET_TYPE')
29 ASSERT(ctx, cache[target] == value,
30 "Target '%s' re-defined as %s - was %s" % (target, value, cache[target]))
31 debug("task_gen: Skipping duplicate target %s (curdir=%s)" % (target, ctx.curdir))
33 LOCAL_CACHE_SET(ctx, 'TARGET_TYPE', target, value)
34 debug("task_gen: Target '%s' created of type '%s' in %s" % (target, value, ctx.curdir))
37 ######################################################
38 # this is used as a decorator to make functions only
39 # run once. Based on the idea from
40 # http://stackoverflow.com/questions/815110/is-there-a-decorator-to-simply-cache-function-return-values
42 def runonce(function):
44 if args in runonce_ret:
45 return runonce_ret[args]
48 runonce_ret[args] = ret
55 '''setup the default rpath'''
56 rpath = os.path.normpath('%s/%s' % (bld.env['BUILD_DIRECTORY'], LIB_PATH))
57 bld.env.append_value('RPATH', '-Wl,-rpath=%s' % rpath)
58 Build.BuildContext.set_rpath = set_rpath
60 def install_rpath(bld):
61 '''the rpath value for installation'''
62 if bld.env['RPATH_ON_INSTALL']:
63 return ['-Wl,-rpath=%s/lib' % bld.env.PREFIX]
67 #############################################################
68 # return a named build cache dictionary, used to store
69 # state inside the following functions
71 def LOCAL_CACHE(ctx, name):
78 #############################################################
79 # set a value in a local cache
81 def LOCAL_CACHE_SET(ctx, cachename, key, value):
82 cache = LOCAL_CACHE(ctx, cachename)
85 #############################################################
88 def ASSERT(ctx, expression, msg):
90 sys.stderr.write("ERROR: %s\n" % msg)
92 Build.BuildContext.ASSERT = ASSERT
94 ################################################################
95 # create a list of files by pre-pending each with a subdir name
96 def SUBDIR(bld, subdir, list):
98 for l in TO_LIST(list):
99 ret = ret + os.path.normpath(os.path.join(subdir, l)) + ' '
101 Build.BuildContext.SUBDIR = SUBDIR
103 #######################################################
105 def dict_concat(d1, d2):
110 ############################################################
111 # this overrides the 'waf -v' debug output to be in a nice
112 # unix like format instead of a python list.
113 # Thanks to ita on #waf for this
114 def exec_command(self, cmd, **kw):
117 if isinstance(cmd, list):
119 debug('runner: %s' % _cmd)
121 self.log.write('%s\n' % cmd)
124 if not kw.get('cwd', None):
126 except AttributeError:
127 self.cwd = kw['cwd'] = self.bldnode.abspath()
128 return Utils.exec_command(cmd, **kw)
129 Build.BuildContext.exec_command = exec_command
132 ##########################################################
133 # add a new top level command to waf
134 def ADD_COMMAND(opt, name, function):
135 Utils.g_module.__dict__[name] = function
137 Options.Handler.ADD_COMMAND = ADD_COMMAND
140 @feature('cc', 'cshlib', 'cprogram')
141 @before('apply_core','exec_rule')
142 def process_depends_on(self):
143 '''The new depends_on attribute for build rules
144 allow us to specify a dependency on output from
145 a source generation rule'''
146 if getattr(self , 'depends_on', None):
147 lst = self.to_list(self.depends_on)
149 y = self.bld.name_to_obj(x, self.env)
150 self.bld.ASSERT(y is not None, "Failed to find dependency %s of %s" % (x, self.name))
152 if getattr(y, 'more_includes', None):
153 self.includes += " " + y.more_includes
156 #@feature('cprogram', 'cc', 'cshlib')
157 #@before('apply_core')
158 #def process_generated_dependencies(self):
159 # '''Ensure that any dependent source generation happens
160 # before any task that requires the output'''
161 # if getattr(self , 'depends_on', None):
162 # lst = self.to_list(self.depends_on)
164 # y = self.bld.name_to_obj(x, self.env)
168 #import TaskGen, Task
170 #old_post_run = Task.Task.post_run
171 #def new_post_run(self):
173 # return old_post_run(self)
175 #for y in ['cc', 'cxx']:
176 # TaskGen.classes[y].post_run = new_post_run
178 def ENABLE_MAGIC_ORDERING(bld):
179 '''enable automatic build order constraint calculation
180 see page 35 of the waf book'''
181 print "NOT Enabling magic ordering"
183 Build.BuildContext.ENABLE_MAGIC_ORDERING = ENABLE_MAGIC_ORDERING
186 os_path_relpath = getattr(os.path, 'relpath', None)
187 if os_path_relpath is None:
188 # Python < 2.6 does not have os.path.relpath, provide a replacement
189 # (imported from Python2.6.5~rc2)
190 def os_path_relpath(path, start):
191 """Return a relative version of a path"""
192 start_list = os.path.abspath(start).split("/")
193 path_list = os.path.abspath(path).split("/")
195 # Work out how much of the filepath is shared by start and path.
196 i = len(os.path.commonprefix([start_list, path_list]))
198 rel_list = ['..'] * (len(start_list)-i) + path_list[i:]
201 return os.path.join(*rel_list)
204 # this is a useful way of debugging some of the rules in waf
205 from TaskGen import feature, after
207 @after('apply_core', 'apply_obj_vars_cc')
209 if self.target == 'HEIMDAL_HEIM_ASN1':
210 print "@@@@@@@@@@@@@@2", self.includes, self.env._CCINCFLAGS
212 def unique_list(seq):
213 '''return a uniquified list in the same order as the existing list'''
217 if item in seen: continue
223 '''Split a list, preserving quoted strings and existing lists'''
224 if isinstance(str, list):
227 # the string may have had quotes in it, now we
228 # check if we did have quotes, and use the slower shlex
232 return shlex.split(str)
236 def SUBST_ENV_VAR(ctx, varname):
237 '''Substitute an environment variable for any embedded variables'''
238 return Utils.subst_vars(ctx.env[varname], ctx.env)
239 Build.BuildContext.SUBST_ENV_VAR = SUBST_ENV_VAR
242 def ENFORCE_GROUP_ORDERING(bld):
243 '''enforce group ordering for the project. This
244 makes the group ordering apply only when you specify
245 a target with --target'''
246 if Options.options.compile_targets:
248 def force_previous_groups(self):
253 for g in bld.task_manager.groups:
254 for t in g.tasks_gen:
261 for g in bld.task_manager.groups:
264 for t in g.tasks_gen:
266 Build.BuildContext.ENFORCE_GROUP_ORDERING = ENFORCE_GROUP_ORDERING
269 # @before('apply_lib_vars')
270 # def process_objects(self):
271 # if getattr(self, 'add_objects', None):
272 # lst = self.to_list(self.add_objects)
274 # y = self.name_to_obj(x)
276 # raise Utils.WafError('object %r was not found in uselib_local (required by add_objects %r)' % (x, self.name))
278 # self.env.append_unique('INC_PATHS', y.env.INC_PATHS)
281 def recursive_dirlist(dir, relbase):
282 '''recursive directory list'''
284 for f in os.listdir(dir):
286 if os.path.isdir(f2):
287 ret.extend(recursive_dirlist(f2, relbase))
289 ret.append(os_path_relpath(f2, relbase))
295 if os.path.isdir(dir):
297 mkdir_p(os.path.dirname(dir))
304 '''run a external command, return exit code or signal'''
305 # recursively expand variables
307 while cmd.find('${') != -1:
308 cmd = Utils.subst_vars(cmd, env)
310 status = os.system(cmd)
311 if os.WIFEXITED(status):
312 return os.WEXITSTATUS(status)
313 if os.WIFSIGNALED(status):
314 return - os.WTERMSIG(status)
315 print "Unknown exit reason %d for command: %s" (status, cmd)