1 files changed, 14 insertions, 7 deletions

diff --git a/lib/component_factory.cc b/lib/component_factory.cc
index f8666dc..b8f5a16 100644
--- a/lib/component_factory.cc
+++ b/lib/component_factory.cc
@@ -21,3 +21,3 @@ namespace sitecing {
 
-    static const char *pp_targets[] = { ".cc", ".h", ".imports", ".classname", ".baseclassname", ".ancestors" };
+    static const char *pp_targets[] = { ".cc", ".h", ".imports", ".classname", ".baseclassname", ".ancestors", ".pp_stamp" };
     static const char *cc_targets[] = { ".o", ".d" };
@@ -118,6 +118,12 @@ namespace sitecing {
         try {
-            strip_prefix(dp,root_intermediate);
-            return file_factory::is_uptodate(dst,deps);
-        }catch(utility_no_prefix& unp) {
-        }
+            string noro = strip_prefix(dp,root_intermediate);
+            for(int ppt=0;(ppt+1)<sizeof(pp_targets)/sizeof(*pp_targets);ppt++) {
+                try {
+                    string nos = strip_suffix(noro,pp_targets[ppt]);
+                    return file_factory::is_uptodate(root_intermediate+nos+".pp_stamp",deps);
+                }catch(utility_no_suffix& uns) { }
+            }
+            bool rv =  file_factory::is_uptodate(dst,deps);
+            return rv;
+        }catch(utility_no_prefix& unp) { }
         try {
@@ -125,4 +131,3 @@ namespace sitecing {
             return file_factory::is_uptodate(dst,deps);
-        }catch(utility_no_prefix& unp) {
-        }
+        }catch(utility_no_prefix& unp) { }
         return true;
@@ -251,2 +256,4 @@ namespace sitecing {
                     parser.preprocess(src);
+                    string sf = root_intermediate+noro+".pp_stamp";
+                    ofstream sfs(sf.c_str(),ios::trunc|ios::out); // touch .pp_stamp
                 }catch(preprocessor_error& pe) {