Merge pull request #6653 from masterleinad/remove_deprecation_allocat…

…ion_mechanism_gcc_11_0

Remove deprecation warning for AllocationMechanism for gcc <11.0

core/src/Kokkos_HostSpace.hpp

@@ -75,12 +75,19 @@ class HostSpace {
   /**\brief  Non-default memory space instance to choose allocation mechansim,
    * if available */
 
-  enum KOKKOS_DEPRECATED AllocationMechanism {
-    STD_MALLOC,
-    POSIX_MEMALIGN,
-    POSIX_MMAP,
-    INTEL_MM_ALLOC
-  };
+#if defined(KOKKOS_COMPILER_GNU) && KOKKOS_COMPILER_GNU < 1100
+  // We see deprecation warnings even when not using the deprecated
+  // HostSpace constructor below when using gcc before release 11.
+  enum
+#else
+  enum KOKKOS_DEPRECATED
+#endif
+      AllocationMechanism {
+        STD_MALLOC,
+        POSIX_MEMALIGN,
+        POSIX_MMAP,
+        INTEL_MM_ALLOC
+      };
 
   KOKKOS_DEPRECATED
   explicit HostSpace(const AllocationMechanism&);