relocation.py (2267B)
1 #! /usr/bin/env python 2 # encoding: utf-8 3 4 """ 5 Waf 1.6 6 7 Try to detect if the project directory was relocated, and if it was, 8 change the node representing the project directory. Just call: 9 10 waf configure build 11 12 Note that if the project directory name changes, the signatures for the tasks using 13 files in that directory will change, causing a partial build. 14 """ 15 16 import os 17 from waflib import Build, ConfigSet, Task, Utils, Errors 18 from waflib.TaskGen import feature, after_method 19 20 EXTRA_LOCK = '.old_srcdir' 21 22 old1 = Build.BuildContext.store 23 def store(self): 24 old1(self) 25 db = os.path.join(self.variant_dir, EXTRA_LOCK) 26 env = ConfigSet.ConfigSet() 27 env.SRCDIR = self.srcnode.abspath() 28 env.store(db) 29 Build.BuildContext.store = store 30 31 old2 = Build.BuildContext.init_dirs 32 def init_dirs(self): 33 34 if not (os.path.isabs(self.top_dir) and os.path.isabs(self.out_dir)): 35 raise Errors.WafError('The project was not configured: run "waf configure" first!') 36 37 srcdir = None 38 db = os.path.join(self.variant_dir, EXTRA_LOCK) 39 env = ConfigSet.ConfigSet() 40 try: 41 env.load(db) 42 srcdir = env.SRCDIR 43 except: 44 pass 45 46 if srcdir: 47 d = self.root.find_node(srcdir) 48 if d and srcdir != self.top_dir and getattr(d, 'children', ''): 49 srcnode = self.root.make_node(self.top_dir) 50 print("relocating the source directory %r -> %r" % (srcdir, self.top_dir)) 51 srcnode.children = {} 52 53 for (k, v) in d.children.items(): 54 srcnode.children[k] = v 55 v.parent = srcnode 56 d.children = {} 57 58 old2(self) 59 60 Build.BuildContext.init_dirs = init_dirs 61 62 63 def uid(self): 64 try: 65 return self.uid_ 66 except AttributeError: 67 # this is not a real hot zone, but we want to avoid surprises here 68 m = Utils.md5() 69 up = m.update 70 up(self.__class__.__name__.encode()) 71 for x in self.inputs + self.outputs: 72 up(x.path_from(x.ctx.srcnode).encode()) 73 self.uid_ = m.digest() 74 return self.uid_ 75 Task.Task.uid = uid 76 77 @feature('c', 'cxx', 'd', 'go', 'asm', 'fc', 'includes') 78 @after_method('propagate_uselib_vars', 'process_source') 79 def apply_incpaths(self): 80 lst = self.to_incnodes(self.to_list(getattr(self, 'includes', [])) + self.env['INCLUDES']) 81 self.includes_nodes = lst 82 bld = self.bld 83 self.env['INCPATHS'] = [x.is_child_of(bld.srcnode) and x.path_from(bld.bldnode) or x.abspath() for x in lst] 84 85