cargo clippy

build.rs

@@ -51,12 +51,11 @@ fn check_version(
     Ok(())
 }
 
-fn write_cpp_conf_pri(path: &Path,
-    include_path: &str) -> Result<(), Box<dyn Error>> {
+fn write_cpp_conf_pri(path: &Path, include_path: &str) -> Result<(), Box<dyn Error>> {
     let mut f = fs::File::create(path)?;
-    
+
     writeln!(&mut f)?;
-    writeln!(&mut f, "{} {}", include_path, "/usr/local/include")?;
+    writeln!(&mut f, "INCLUDEPATH = {} /usr/local/include", include_path)?;
 
     Ok(())
 }
@@ -168,13 +167,13 @@ fn main() -> Result<(), Box<dyn Error>> {
     }
 
     let include_path = match conf.get("INCLUDEPATH") {
-        Some(x) => 
-            x.to_string(),
-        None => 
-           String::from("INCLUDEPATH = "),
-
+        Some(x) => x.to_string(),
+        None => String::new(),
     };
-    write_cpp_conf_pri(&cpp_lib_dir.join(Path::new("conf.pri")), include_path.as_str())?;
+    write_cpp_conf_pri(
+        &cpp_lib_dir.join(Path::new("conf.pri")),
+        include_path.as_str(),
+    )?;
 
     write_postbuild_conf_pri(
         &Path::new("target").join(Path::new("postbuild_conf.pri")),