From 1764594bff5fcb57c79e6ecf8e05320400c0e99e Mon Sep 17 00:00:00 2001
From: Mark Mentovai <mark@chromium.org>
Date: Fri, 15 Dec 2017 18:49:34 -0500
Subject: [PATCH] gn, mac: Work without a sysroot
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This is needed to make the “sysroot = "/"” configuration, which
translates to “sysroot = ""”, work properly

Bug: crashpad:79
Change-Id: I25ab49b7d57abfcf0ce9a62925013bb58dadf5dd
Reviewed-on: https://chromium-review.googlesource.com/831007
Reviewed-by: Scott Graham <scottmg@chromium.org>
---
 util/BUILD.gn | 8 ++++++--
 1 file changed, 6 insertions(+), 2 deletions(-)

diff --git a/util/BUILD.gn b/util/BUILD.gn
index ba5232f0..e296b29e 100644
--- a/util/BUILD.gn
+++ b/util/BUILD.gn
@@ -42,9 +42,13 @@ if (is_mac) {
         hermetic_xcode_path,
       ]
     }
+    if (sysroot != "") {
+      args += [
+        "--sdk",
+        sysroot,
+      ]
+    }
     args += [
-      "--sdk",
-      sysroot,
       "--include",
       rebase_path("../compat/mac", root_build_dir),
     ]