Handle multiple import configs in Forge Config file

(cherry picked from commit 0dffff2)

Author: 9prady9

CMakeModules/ForgeConfig.cmake.in

@@ -57,16 +57,24 @@ if (NOT TARGET Forge::forge AND
 endif ()
 
 if (TARGET Forge::forge)
-    get_property(config TARGET Forge::forge PROPERTY IMPORTED_CONFIGURATIONS)
-    if(NOT config)
-      set(config "NOCONFIG")
+    get_property(configs TARGET Forge::forge PROPERTY IMPORTED_CONFIGURATIONS)
+    if(NOT configs)
+        set(configs "NOCONFIG")
     endif()
-    get_property(loc TARGET Forge::forge PROPERTY IMPORTED_LOCATION_${config})
+    foreach(config IN LISTS configs)
+        get_property(loc TARGET Forge::forge PROPERTY IMPORTED_LOCATION_${config})
+
+        # break if any of the imported configurations exist. All configs write to the same
+        # location so they are not working as CMake intended. Its fine for single config
+        # installers like ours.
+        if(EXISTS ${loc})
+            set(Forge_BINARY_EXISTS TRUE)
+            break()
+        endif()
+    endforeach()
 endif ()
 
-if ((TARGET Forge::forge AND EXISTS ${loc})
-    OR
-    TARGET forge)
+if ((TARGET Forge::forge AND Forge_BINARY_EXISTS) OR TARGET forge)
     set(Forge_FOUND ON)
     if (TARGET forge AND NOT TARGET Forge::forge)
         add_library(Forge::forge ALIAS forge)