ENH: Better policies for functions and macros

This teaches functions and macros to use policies recorded at creation
time when they are invoked.  It restores the policies as a weak policy
stack entry so that any policies set by a function escape to its caller
as before.

1 files changed, 12 insertions, 0 deletions

diff --git a/Source/cmMakefile.cxx b/Source/cmMakefile.cxx
index 25d97fa..4442bd3 100644
--- a/Source/cmMakefile.cxx
+++ b/Source/cmMakefile.cxx
@@ -3774,3 +3774,15 @@ cmPolicies *cmMakefile::GetPolicies()
   }
   return this->GetCMakeInstance()->GetPolicies();
 }
+
+//----------------------------------------------------------------------------
+void cmMakefile::RecordPolicies(cmPolicies::PolicyMap& pm)
+{
+  /* Record the setting of every policy.  */
+  typedef cmPolicies::PolicyID PolicyID;
+  for(PolicyID pid = cmPolicies::CMP0000;
+      pid != cmPolicies::CMPCOUNT; pid = PolicyID(pid+1))
+    {
+    pm[pid] = this->GetPolicyStatus(pid);
+    }
+}