From bd692c4b1a8df76a4ffe18857b893ced26ca1000 Mon Sep 17 00:00:00 2001
From: Evan Lucas <evanlucas@me.com>
Date: Wed, 31 Oct 2018 14:09:03 -0500
Subject: [PATCH] tools: fix c++ code coverage on macOS

Recent libtool on macOS does not support the --coverage flag that was
being passed through in the final linking stage.
This change patches gyp-mac-tool to not pass the --coverage flag through
to libtool. It is now possible to generate code coverage for src/ on
macOS.

Fixes: https://github.com/nodejs/node/issues/19057
---
 tools/gyp/pylib/gyp/xcode_emulation.py | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/tools/gyp/pylib/gyp/xcode_emulation.py b/tools/gyp/pylib/gyp/xcode_emulation.py
index 9481423228ab47..f43c864e5fdb56 100644
--- a/tools/gyp/pylib/gyp/xcode_emulation.py
+++ b/tools/gyp/pylib/gyp/xcode_emulation.py
@@ -949,6 +949,8 @@ def GetLibtoolflags(self, configname):
     libtoolflags = []
 
     for libtoolflag in self._Settings().get('OTHER_LDFLAGS', []):
+      if libtoolflag == "--coverage":
+        continue
       libtoolflags.append(libtoolflag)
     # TODO(thakis): ARCHS?