Merge pull request #73 from rukai/fix_ninja

Add parallel flags after --

Author: alexcrichton

src/lib.rs

@@ -681,10 +681,6 @@ impl Config {
             cmd.env("MAKEFLAGS", flags);
         }
 
-        if let Some(flags) = parallel_flags {
-            cmd.arg(flags);
-        }
-
         cmd.arg("--build").arg(".");
 
         if !self.no_build_target {
@@ -697,6 +693,10 @@ impl Config {
             .args(&self.build_args)
             .current_dir(&build);
 
+        if let Some(flags) = parallel_flags {
+            cmd.arg(flags);
+        }
+
         run(&mut cmd, "cmake");
 
         println!("cargo:root={}", dst.display());