From a53748e31906b5821f3aedeb848ac53dcdd6389d Mon Sep 17 00:00:00 2001
From: Ben Boeckel <ben.boeckel@kitware.com>
Date: Tue, 7 Feb 2023 17:57:16 -0500
Subject: [PATCH] cmDyndepCollation: add a query for whether an object is
 BMI-only

The collator needs to know that the object *is* a BMI so that it can
just use the location directly.
---
 Source/cmDyndepCollation.cxx | 13 +++++++++++++
 Source/cmDyndepCollation.h   |  3 +++
 2 files changed, 16 insertions(+)

diff --git a/Source/cmDyndepCollation.cxx b/Source/cmDyndepCollation.cxx
index bdf6b4472e..bd2f546309 100644
--- a/Source/cmDyndepCollation.cxx
+++ b/Source/cmDyndepCollation.cxx
@@ -666,3 +666,16 @@ bool cmDyndepCollation::IsObjectPrivate(
   auto const& file_set = fileset_info_itr->second;
   return !cmFileSetVisibilityIsForInterface(file_set.Visibility);
 }
+
+bool cmDyndepCollation::IsBmiOnly(cmCxxModuleExportInfo const& exportInfo,
+                                  std::string const& object)
+{
+#ifdef _WIN32
+  auto object_path = object;
+  cmSystemTools::ConvertToUnixSlashes(object_path);
+#else
+  auto const& object_path = object;
+#endif
+  auto fs = exportInfo.ObjectToFileSet.find(object_path);
+  return (fs != exportInfo.ObjectToFileSet.end()) && fs->second.BmiOnly;
+}
diff --git a/Source/cmDyndepCollation.h b/Source/cmDyndepCollation.h
index 21f1fe90a3..b193467b65 100644
--- a/Source/cmDyndepCollation.h
+++ b/Source/cmDyndepCollation.h
@@ -53,4 +53,7 @@ struct cmDyndepCollation
                                   cmDyndepMetadataCallbacks const& cb);
   static bool IsObjectPrivate(std::string const& object,
                               cmCxxModuleExportInfo const& export_info);
+
+  static bool IsBmiOnly(cmCxxModuleExportInfo const& exportInfo,
+                        std::string const& object);
 };