From 1a39cbb19a2cc33485d6cc17d51414839bd54b74 Mon Sep 17 00:00:00 2001
From: klzgrad <kizdiv@gmail.com>
Date: Thu, 6 Feb 2020 03:06:50 +0800
Subject: [PATCH] build: Don't use sysroot for host_toolchain

protoc should be built with the host toolchain, usually not needing
the sysroot.
---
 src/build/config/sysroot.gni | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/src/build/config/sysroot.gni b/src/build/config/sysroot.gni
index 18d2d57362..c1b2b8f6e8 100644
--- a/src/build/config/sysroot.gni
+++ b/src/build/config/sysroot.gni
@@ -26,6 +26,10 @@ declare_args() {
                 current_cpu == "mipsel" || current_cpu == "mips64el"
 }
 
+if (current_toolchain == host_toolchain && host_toolchain == "//build/toolchain/linux:clang_x64") {
+  sysroot = ""
+}
+
 if (sysroot == "") {
   if (current_os == target_os && current_cpu == target_cpu &&
       target_sysroot != "") {