diff --git a/win32/build/confutils.js b/win32/build/confutils.js
index 19fbd52aa999c..6cbaf41d16679 100644
--- a/win32/build/confutils.js
+++ b/win32/build/confutils.js
@@ -3404,6 +3404,12 @@ function toolset_setup_common_ldlags()
 				ADD_FLAG('LDFLAGS', "/GUARD:CF");
 			}
 		}
+        if (PHP_VS_LINK_COMPAT != "no") {
+            // Allow compatible IL versions, do not require an exact match.
+            // Prevents build failures where different libs were built with different (but compatible) IL versions.
+            // See fatal error C1047.
+            ADD_FLAG("LDFLAGS", "/d2:-AllowCompatibleILVersions ");
+        }
 	}
 }
 
@@ -3753,3 +3759,9 @@ function setup_verbosity()
 		CMD_MOD2 = "@";
 	}
 }
+
+try {
+ARG_ENABLE('vs-link-compat', 'Allow linking of libraries built with compatible versions of VS toolset', 'yes');
+} catch (e) {
+    STDOUT.WriteLine("problem: " + e);
+}