enable CPU extension features based on target in llama-cpp-2

Author: babichjacob

llama-cpp-2/Cargo.toml

@@ -19,6 +19,19 @@ cuda = ["llama-cpp-sys-2/cuda"]
 metal = ["llama-cpp-sys-2/metal"]
 sampler = []
 
+[target.'cfg(target_feature = "avx")'.dependencies]
+llama-cpp-sys-2 = { path = "../llama-cpp-sys-2", features = ["avx"] }
+[target.'cfg(target_feature = "avx2")'.dependencies]
+llama-cpp-sys-2 = { path = "../llama-cpp-sys-2", features = ["avx2"] }
+[target.'cfg(target_feature = "avx512vbmi")'.dependencies]
+llama-cpp-sys-2 = { path = "../llama-cpp-sys-2", features = ["avx512_vmbi"] }
+[target.'cfg(target_feature = "avx512vnni")'.dependencies]
+llama-cpp-sys-2 = { path = "../llama-cpp-sys-2", features = ["avx512_vnni"] }
+[target.'cfg(target_feature = "f16c")'.dependencies]
+llama-cpp-sys-2 = { path = "../llama-cpp-sys-2", features = ["f16c"] }
+[target.'cfg(target_feature = "fma")'.dependencies]
+llama-cpp-sys-2 = { path = "../llama-cpp-sys-2", features = ["fma"] }
+
 [target.'cfg(all(target_os = "macos", any(target_arch = "aarch64", target_arch = "arm64")))'.dependencies]  
 llama-cpp-sys-2 = { path = "../llama-cpp-sys-2", features=["metal"], version = "0.1.48" }