Build failing with Metal

[grorge123]

When I update to the newest commit 9578fdc, I encounter the build issue for metal. But it works for no metal or cuda.

• Compile command

cmake .. -DSD_METAL=ON
cmake --build . --config Release

• Cmake error message

stable-diffusion.cpp/./ggml_extend.hpp:1143:13: error: use of undeclared identifier 'ggml_backend_metal_set_n_cb'
            ggml_backend_metal_set_n_cb(backend, n_threads);

stable-diffusion.cpp/stable-diffusion.cpp:164:9: error: use of undeclared identifier 'ggml_backend_metal_log_set_callback'
        ggml_backend_metal_log_set_callback(ggml_log_callback_default, nullptr);

[stduhpf]

I can confirm. I think it could be related to the fact that ggml-metal.m was moved from ggml/src/ to ggml/src/ggml-metal/
(ggml-org/ggml@813a12c, ggml-org/ggml@a131a82)

Edit: ggml_backend_metal_log_set_callback() got removed by ggml-org/ggml@7588f54

[stduhpf]

I can build by replacing references to ggml_backend_metal_log_set_callback() with ggml_log_set() and commenting out the call to ggml_backend_metal_set_n_cb(). I couldn't find what to replace it with (edit: It should just be removed ggml-org/llama.cpp#9698).