Code shuffle to clean up the llm dir

llm/generate/gen_darwin.sh

@@ -0,0 +1,32 @@
+#!/bin/bash
+# This script is intended to run inside the go generate
+# working directory must be ./llm/generate/
+
+# TODO - add hardening to detect missing tools (cmake, etc.)
+
+set -ex
+set -o pipefail
+echo "Starting darwin generate script"
+source $(dirname $0)/gen_common.sh
+init_vars
+CMAKE_DEFS="-DCMAKE_OSX_DEPLOYMENT_TARGET=11.0 -DLLAMA_METAL=on -DLLAMA_ACCELERATE=on ${CMAKE_DEFS}"
+BUILD_DIR="${LLAMACPP_DIR}/build/darwin/metal"
+case "${GOARCH}" in
+"amd64")
+    CMAKE_DEFS="-DCMAKE_SYSTEM_PROCESSOR=x86_64 -DCMAKE_OSX_ARCHITECTURES=x86_64 -DLLAMA_NATIVE=off -DLLAMA_AVX=on -DLLAMA_AVX2=off -DLLAMA_AVX512=off -DLLAMA_FMA=off -DLLAMA_F16C=off ${CMAKE_DEFS}"
+    ;;
+"arm64")
+    CMAKE_DEFS="-DCMAKE_SYSTEM_PROCESSOR=arm64 -DCMAKE_OSX_ARCHITECTURES=arm64 ${CMAKE_DEFS}"
+    ;;
+*)
+    echo "GOARCH must be set"
+    echo "this script is meant to be run from within go generate"
+    exit 1
+    ;;
+esac
+
+git_module_setup
+apply_patches
+build
+install
+cleanup