1 files changed, 20 insertions, 8 deletions
diff --git a/Source/cmInstallDirectoryGenerator.cxx b/Source/cmInstallDirectoryGenerator.cxx
index 175e7cf0b..4eb5f69e4 100644
--- a/Source/cmInstallDirectoryGenerator.cxx
+++ b/Source/cmInstallDirectoryGenerator.cxx
@@ -16,9 +16,9 @@ cmInstallDirectoryGenerator::cmInstallDirectoryGenerator(
   std::string file_permissions, std::string dir_permissions,
   std::vector<std::string> const& configurations, std::string const& component,
   MessageLevel message, bool exclude_from_all, std::string literal_args,
-  bool optional)
+  bool optional, cmListFileBacktrace backtrace)
   : cmInstallGenerator(dest, configurations, component, message,
-                       exclude_from_all)
+                       exclude_from_all, std::move(backtrace))
   , LocalGenerator(nullptr)
   , Directories(dirs)
   , FilePermissions(std::move(file_permissions))
@@ -27,7 +27,7 @@ cmInstallDirectoryGenerator::cmInstallDirectoryGenerator(
   , Optional(optional)
 {
   // We need per-config actions if destination have generator expressions.
-  if (cmGeneratorExpression::Find(Destination) != std::string::npos) {
+  if (cmGeneratorExpression::Find(this->Destination) != std::string::npos) {
     this->ActionsPerConfig = true;
   }
 
@@ -50,6 +50,22 @@ bool cmInstallDirectoryGenerator::Compute(cmLocalGenerator* lg)
   return true;
 }
 
+std::vector<std::string> cmInstallDirectoryGenerator::GetDirectories(
+  std::string const& config) const
+{
+  std::vector<std::string> directories;
+  if (this->ActionsPerConfig) {
+    for (std::string const& f : this->Directories) {
+      cmExpandList(
+        cmGeneratorExpression::Evaluate(f, this->LocalGenerator, config),
+        directories);
+    }
+  } else {
+    directories = this->Directories;
+  }
+  return directories;
+}
+
 void cmInstallDirectoryGenerator::GenerateScriptActions(std::ostream& os,
                                                         Indent indent)
 {
@@ -63,11 +79,7 @@ void cmInstallDirectoryGenerator::GenerateScriptActions(std::ostream& os,
 void cmInstallDirectoryGenerator::GenerateScriptForConfig(
   std::ostream& os, const std::string& config, Indent indent)
 {
-  std::vector<std::string> dirs;
-  for (std::string const& d : this->Directories) {
-    cmExpandList(
-      cmGeneratorExpression::Evaluate(d, this->LocalGenerator, config), dirs);
-  }
+  std::vector<std::string> dirs = this->GetDirectories(config);
 
   // Make sure all dirs have absolute paths.
   cmMakefile const& mf = *this->LocalGenerator->GetMakefile();