Fix macos build

Author: zshipko

build.rs

@@ -15,15 +15,34 @@ fn main() {
         let flags = String::from_utf8(pkg.stdout).unwrap();
         let flags = flags.split(" ");
         let mut config = cpp_build::Config::new();
-        config.flag("-std=c++14");
+        config.flag("-std=c++14").flag("-w");
+
+        let mut search = Vec::new();
+        let mut libs = Vec::new();
 
         for flag in flags {
-            config.flag(flag);
+            if let Some(s) = flag.strip_prefix("-L") {
+                search.push(s.to_string());
+            } else if let Some(s) = flag.strip_prefix("-l") {
+                libs.push(s.to_string());
+            } else {
+                config.flag(flag);
+            }
         }
 
         config.build("src/io/oiio.rs");
 
-        println!("cargo:rustc-link-lib=OpenImageIO");
-        println!("cargo:rustc-link-lib=OpenImageIO_Util");
+        for s in search {
+            println!("cargo:rustc-link-search={s}");
+        }
+
+        if libs.is_empty() {
+            println!("cargo:rustc-link-lib=OpenImageIO");
+            println!("cargo:rustc-link-lib=OpenImageIO_Util");
+        } else {
+            for lib in libs {
+                println!("cargo:rustc-link-lib={lib}");
+            }
+        }
     }
 }