[C++] Fix shell_var.mk

1 files changed, 2 insertions, 0 deletions

diff --git a/eval.h b/eval.h
index dcdb87f..6287e67 100644
--- a/eval.h
+++ b/eval.h
@@ -56,6 +56,8 @@ class Evaluator {
   // For target specific variables.
   Var* LookupVarInCurrentScope(Symbol name);
 
+  shared_ptr<string> EvalVar(Symbol name);
+
   const Loc& loc() const { return loc_; }
 
   const vector<shared_ptr<Rule>>& rules() const { return rules_; }