From b8efa211799d186310fb30979f8d871b94d9ba90 Mon Sep 17 00:00:00 2001
From: Alex Crichton <alex@alexcrichton.com>
Date: Mon, 11 Sep 2017 12:57:10 -0700
Subject: [PATCH] Only pass -Oz to clang

Closes #241
---
 src/lib.rs | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/src/lib.rs b/src/lib.rs
index 575db68..4c5e724 100644
--- a/src/lib.rs
+++ b/src/lib.rs
@@ -158,7 +158,7 @@ pub struct Tool {
 /// Each family of tools differs in how and what arguments they accept.
 ///
 /// Detection of a family is done on best-effort basis and may not accurately reflect the tool.
-#[derive(Copy, Clone, Debug)]
+#[derive(Copy, Clone, Debug, PartialEq)]
 enum ToolFamily {
     /// Tool is GNU Compiler Collection-like.
     Gnu,
@@ -961,7 +961,7 @@ impl Build {
             ToolFamily::Clang => {
                 // arm-linux-androideabi-gcc 4.8 shipped with Android NDK does
                 // not support '-Oz'
-                if target.contains("android") && opt_level == "z" {
+                if opt_level == "z" && cmd.family != ToolFamily::Clang {
                     cmd.args.push("-Os".into());
                 } else {
                     cmd.args.push(format!("-O{}", opt_level).into());