fix compile issues

ggml/CMakeLists.txt

@@ -227,6 +227,7 @@ option(GGML_VULKAN_MEMORY_DEBUG             "ggml: enable Vulkan memory debug ou
 option(GGML_VULKAN_SHADER_DEBUG_INFO        "ggml: enable Vulkan shader debug info"           OFF)
 option(GGML_VULKAN_VALIDATE                 "ggml: enable Vulkan validation"                  OFF)
 option(GGML_VULKAN_RUN_TESTS                "ggml: run Vulkan tests"                          OFF)
+option(GGML_VULKAN_COPY_TESTS               "ggml: run Vulkan cross-device copy benchmarks"    OFF)
 option(GGML_WEBGPU                          "ggml: use WebGPU"                                OFF)
 option(GGML_WEBGPU_DEBUG                    "ggml: enable WebGPU debug output"                OFF)
 option(GGML_WEBGPU_CPU_PROFILE              "ggml: enable WebGPU profiling (CPU)"             OFF)

ggml/src/ggml-vulkan/CMakeLists.txt

@@ -148,6 +148,10 @@ if (Vulkan_FOUND)
         target_link_libraries(ggml-vulkan PRIVATE ggml-cpu)
     endif()
 
+    if (GGML_VULKAN_COPY_TESTS)
+        add_compile_definitions(GGML_VULKAN_COPY_TESTS)
+    endif()
+
     # Set up toolchain for host compilation whether cross-compiling or not
     if (CMAKE_CROSSCOMPILING)
         if (GGML_VULKAN_SHADERS_GEN_TOOLCHAIN)