Fix only add daita tag when building wireguard-go for Linux

Author: MarkusPettersson98

wireguard-go-rs/build-wireguard-go.sh

@@ -72,8 +72,15 @@ function build_unix {
 
 
     pushd libwg
+        # TODO: There ought to be a simpler way to do this..
+        TAGS=()
+        platform="$(uname -s)";
+        case "$platform" in
+            Linux*) TAGS+="--tags daita";;
+        esac
+
         # TODO: pass OUT_DIR as an arg maybe? instead of relying on cargo setting it globally?
-        go build -v -tags daita -o "$OUT_DIR"/libwg.a -buildmode c-archive
+        go build -v "${TAGS[@]}" -o ./libwg.a -buildmode c-archive
     popd
 }