1 files changed, 5 insertions, 0 deletions
diff --git a/toolsrc/include/vcpkg/build.h b/toolsrc/include/vcpkg/build.h
index 8c4d7b575..1c22d39d8 100644
--- a/toolsrc/include/vcpkg/build.h
+++ b/toolsrc/include/vcpkg/build.h
@@ -209,6 +209,11 @@ namespace vcpkg::Build
     {
         std::string key;
         std::string value;
+
+        bool operator<(const AbiEntry& other) const
+        {
+            return key < other.key || (key == other.key && value < other.value);
+        }
     };
 
     struct AbiTagAndFile