Configure/disfigure src_root saving/removing support; fsdir{} injection

We can now build out-of-tree.

1 files changed, 3 insertions, 0 deletions

diff --git a/build/target b/build/target
index 050696c..f8bb2c1 100644
--- a/build/target
+++ b/build/target
@@ -227,6 +227,9 @@ namespace build
             const std::string* ext,
             tracer&);
 
+    void
+    clear () {map_.clear ();}
+
   private:
     map map_;
   };