adding find_library function for windows

Author: scryner

Cargo.lock

@@ -45,3 +45,4 @@ libheif-rs = "0.19.2"
 [build-dependencies]
 cc = "1.0.79"
 pkg-config = "0.3.26"
+vcpkg = "0.2.15"

Cargo.toml

@@ -78,6 +78,11 @@ fn find_library(from_pkg_config: FromPkgConfig, from_env: FromEnv) -> Result<Vec
     }
 
     // try to find from pkg_config
+    find_library_internal(&from_pkg_config)
+}
+
+#[cfg(not(target_os = "windows"))]
+fn find_library_internal(from_pkg_config: &FromPkgConfig) -> Result<Vec<PathBuf>, String> {
     match pkg_config::Config::new()
         .atleast_version(from_pkg_config.atleast_version.as_str())
         .probe(from_pkg_config.name.as_str()) {
@@ -88,6 +93,14 @@ fn find_library(from_pkg_config: FromPkgConfig, from_env: FromEnv) -> Result<Vec
     }
 }
 
+#[cfg(target_os = "windows")]
+fn find_library_internal(from_pkg_config: &FromPkgConfig) -> Result<Vec<PathBuf>, String> {
+    let library = vcpkg::find_package(from_pkg_config.name.as_str())
+        .map_err(|e| Err(String::from(format!("can't find library '{}' using vcpkg", from_pkg_config.name.as_str()))))?;
+
+    Ok(library.include_paths)
+}
+
 fn find_library_from_env(from_env: &FromEnv) -> Result<Vec<PathBuf>, String> {
     let include_dirs = verify_directories_from_env(from_env.env_key_include_dirs.as_str())?;
     for dir in include_dirs.iter() {