build: try faster includes processing

1 files changed, 81 insertions, 0 deletions

diff --git a/source4/wscript b/source4/wscript
index aecea2df5f..bac4e06aec 100644
--- a/source4/wscript
+++ b/source4/wscript
@@ -63,3 +63,84 @@ def configure(conf):
     conf.sub_config('lib/smbreadline')
 
     conf.SAMBA_CONFIG_H('include/config.h')
+
+
+
+from TaskGen import feature, before, after
+
+kak = {}
+@feature('cc', 'cxx')
+@after('apply_type_vars', 'apply_lib_vars', 'apply_core')
+def apply_incpaths(self):
+    """used by the scanner
+    after processing the uselib for CPPPATH
+    after apply_core because some processing may add include paths
+    """
+    lst = []
+    # TODO move the uselib processing out of here
+    for lib in self.to_list(self.uselib):
+        for path in self.env['CPPPATH_' + lib]:
+            if not path in lst:
+                lst.append(path)
+    if preproc.go_absolute:
+        for path in preproc.standard_includes:
+            if not path in lst:
+                lst.append(path)
+
+    for path in self.to_list(self.includes):
+        if not path in lst:
+            if preproc.go_absolute or not os.path.isabs(path):
+                lst.append(path)
+            else:
+                self.env.prepend_value('CPPPATH', path)
+
+    for path in lst:
+        try:
+            #print len(kak.items())
+            node = kak[(self.path.id, path)]
+        except KeyError:
+
+            node = None
+            if os.path.isabs(path):
+                if preproc.go_absolute:
+                    node = self.bld.root.find_dir(path)
+            elif path[0] == '#':
+                node = self.bld.srcnode
+                if len(path) > 1:
+                    node = node.find_dir(path[1:])
+            else:
+                node = self.path.find_dir(path)
+
+            kak[(self.path.id, path)] = node
+        if node:
+            self.env.append_value('INC_PATHS', node)
+    # TODO WAF 1.6
+    if USE_TOP_LEVEL:
+        self.env.append_value('INC_PATHS', self.bld.srcnode)
+
+
+
+cac = {}
+@feature('cc')
+@after('apply_incpaths')
+def apply_obj_vars_cc(self):
+    """after apply_incpaths for INC_PATHS"""
+    env = self.env
+    app = env.append_unique
+    cpppath_st = env['CPPPATH_ST']
+
+    global cac
+
+    # local flags come first
+    # set the user-defined includes paths
+    for i in env['INC_PATHS']:
+
+        try:
+            app('_CCINCFLAGS', cac[i.id])
+        except KeyError:
+            cac[i.id] = [cpppath_st % i.bldpath(env), cpppath_st % i.srcpath(env)]
+            app('_CCINCFLAGS', cac[i.id])
+
+    # set the library include paths
+    for i in env['CPPPATH']:
+        app('_CCINCFLAGS', cpppath_st % i)