build doesn't tollerate duplicates anymore.

1 files changed, 19 insertions, 0 deletions

diff --git a/src/rule.cpp b/src/rule.cpp
index 2f87d85..7924ba4 100644
--- a/src/rule.cpp
+++ b/src/rule.cpp
@@ -3,6 +3,8 @@
 #include "function.h"
 #include "perform.h"
 
+#include <set>
+
 Rule::Rule() :
         pAggregate( NULL )
 {
@@ -46,6 +48,23 @@ StringList Rule::execute( Build &bld, StringList &lInput, PerformList &lPerf, bo
                 lProduces.push_back( sTarget );
         }
 
+        {
+                std::set<std::string> sUsed;
+                for( StringList::iterator i = lInput.begin(); i != lInput.end(); i++ )
+                {
+isuck:          if( i == lInput.end() ) break;
+                        if( sUsed.find( *i ) != sUsed.end() )
+                        {
+                                StringList::iterator j = i;
+                                j++;
+                                lInput.erase( i );
+                                i = j;
+                                goto isuck;
+                        }
+                        sUsed.insert( *i );
+                }
+        }
+
         StringList lNewOut;
         if( pAggregate )
         {