1 files changed, 8 insertions, 6 deletions
diff --git a/Source/cmRulePlaceholderExpander.h b/Source/cmRulePlaceholderExpander.h
index 852954fe4d..23ec405d06 100644
--- a/Source/cmRulePlaceholderExpander.h
+++ b/Source/cmRulePlaceholderExpander.h
@@ -8,9 +8,11 @@
 #include <map>
 #include <string>
 
+#include "cmPlaceholderExpander.h"
+
 class cmOutputConverter;
 
-class cmRulePlaceholderExpander
+class cmRulePlaceholderExpander : public cmPlaceholderExpander
 {
 public:
   cmRulePlaceholderExpander(
@@ -76,16 +78,16 @@ public:
                            std::string& string,
                            const RuleVariables& replaceValues);
 
-  // Expand rule variables in a single string
-  std::string ExpandRuleVariable(cmOutputConverter* outputConverter,
-                                 std::string const& variable,
-                                 const RuleVariables& replaceValues);
-
 private:
+  std::string ExpandVariable(std::string const& variable) override;
+
   std::string TargetImpLib;
 
   std::map<std::string, std::string> Compilers;
   std::map<std::string, std::string> VariableMappings;
   std::string CompilerSysroot;
   std::string LinkerSysroot;
+
+  cmOutputConverter* OutputConverter = nullptr;
+  RuleVariables const* ReplaceValues = nullptr;
 };