compiler: fix dynamic_too_enable for targets that require dynamic libraries

This commit fixes dynamic_too_enable for targets whose RTS linker can
only load dynamic code.

(cherry picked from commit fc3a5591)

compiler/GHC/Driver/Make.hs

@@ -1918,7 +1918,11 @@ enableCodeGenWhen logger tmpfs staticLife dynLife unit_env mod_graph =
     -- the linker can correctly load the object files.  This isn't necessary
     -- when using -fexternal-interpreter.
     dynamic_too_enable enable_spec ms
-      = hostIsDynamic && internalInterpreter &&
+      | sTargetRTSLinkerOnlySupportsSharedLibs $ settings lcl_dflags =
+          not isDynWay && not dyn_too_enabled
+            && enable_object
+      | otherwise =
+          hostIsDynamic && internalInterpreter &&
             not isDynWay && not isProfWay &&  not dyn_too_enabled
               && enable_object
       where