1 files changed, 19 insertions, 1 deletions
diff --git a/Source/cmListFileCache.cxx b/Source/cmListFileCache.cxx
index 4d7e1e2..4689f42 100644
--- a/Source/cmListFileCache.cxx
+++ b/Source/cmListFileCache.cxx
@@ -9,10 +9,10 @@
 #include "cmSystemTools.h"
 #include "cmake.h"
 
-#include <algorithm>
 #include <assert.h>
 #include <memory>
 #include <sstream>
+#include <utility>
 
 cmCommandContext::cmCommandName& cmCommandContext::cmCommandName::operator=(
   std::string const& name)
@@ -474,3 +474,21 @@ bool operator!=(const cmListFileContext& lhs, const cmListFileContext& rhs)
 {
   return !(lhs == rhs);
 }
+
+std::ostream& operator<<(std::ostream& os, BT<std::string> const& s)
+{
+  return os << s.Value;
+}
+
+std::vector<BT<std::string>> ExpandListWithBacktrace(
+  std::string const& list, cmListFileBacktrace const& bt)
+{
+  std::vector<BT<std::string>> result;
+  std::vector<std::string> tmp;
+  cmSystemTools::ExpandListArgument(list, tmp);
+  result.reserve(tmp.size());
+  for (std::string& i : tmp) {
+    result.emplace_back(std::move(i), bt);
+  }
+  return result;
+}