Add support for dynamic loading of windows dll

Cargo.toml

@@ -23,9 +23,11 @@ gat-std = { version = "0.1.1", optional = true }
 # and these libraries would truncate the min support Rust version (MSRV)
 tun-tap = { version = "0.1.3", optional = true }
 etherparse = { version = "0.13.0", optional = true }
+libloading = "0.8"
 
 [target.'cfg(target_os = "windows")'.dependencies]
 windows-sys = { version = "0.36.1", features = ["Win32_Foundation", "Win32_Networking_WinSock"] }
+once_cell = "1.19"
 
 [dev-dependencies]
 tempdir = "0.3"
@@ -34,7 +36,7 @@ tempdir = "0.3"
 eui48 = "1.1"
 
 [build-dependencies]
-libloading = "0.6"
+libloading = "0.8"
 regex = "1"
 pkg-config = "0.3"
 
@@ -44,6 +46,7 @@ pkg-config = "0.3"
 capture-stream = ["tokio", "futures"]
 tap-tests = ["tun-tap", "etherparse"]
 lending-iter = ["gat-std"]
+dynamic-load = []
 # an empty feature to detect if '--all-features' was set
 all-features = []
 

build.rs

@@ -99,7 +99,7 @@ fn get_libpcap_version(libdirpath: Option<PathBuf>) -> Result<Version, Box<dyn s
         libfile = libdir.join(libfile);
     }
 
-    let lib = if let Ok(lib) = libloading::Library::new(libfile) {
+    let lib = if let Ok(lib) = unsafe { libloading::Library::new(libfile) } {
         lib
     } else {
         return Ok(Version::max());