fix: Vulkan shader gen binary path when Cross-compiling (llama/11096)

ggml/src/ggml-vulkan/CMakeLists.txt

@@ -69,11 +69,15 @@ if (Vulkan_FOUND)
 
     file(GLOB _ggml_vk_shader_deps "${_ggml_vk_input_dir}/*.comp")
 
+    if (NOT CMAKE_CROSSCOMPILING)
+        set(_ggml_vk_genshaders_cmd "$<TARGET_FILE_DIR:vulkan-shaders-gen>/${_ggml_vk_genshaders_cmd}")
+    endif ()
+
     add_custom_command(
         OUTPUT ${_ggml_vk_header}
                 ${_ggml_vk_source}
 
-        COMMAND "$<TARGET_FILE_DIR:vulkan-shaders-gen>/${_ggml_vk_genshaders_cmd}"
+        COMMAND ${_ggml_vk_genshaders_cmd}
             --glslc      ${Vulkan_GLSLC_EXECUTABLE}
             --input-dir  ${_ggml_vk_input_dir}
             --output-dir ${_ggml_vk_output_dir}