error: use of undeclared identifier 'ggml_metal_free' auto operator()(ggml_metal_context *ctx) const noexcept -> void { ggml_metal_free(ctx); }

[zss205]

error: use of undeclared identifier 'ggml_metal_free'
auto operator()(ggml_metal_context *ctx) const noexcept -> void { ggml_metal_free(ctx); }
error: unknown type name 'ggml_metal_context'; did you mean 'ggml_opt_context'?
using unique_ggml_metal_context_t = std::unique_ptr<ggml_metal_context, ggml_metal_context_deleter_t>;
error: use of undeclared identifier 'ggml_metal_init'; did you mean 'ggml_numa_init'?
return unique_ggml_metal_context_t(ggml_metal_init(n_cb));
^~~~~~~~~~~~~~~
ggml_numa_init