From 01453b05c49a5796fa87d7c1d90931b33beb42a4 Mon Sep 17 00:00:00 2001
From: Jay Soffian <155970+jaysoffian@users.noreply.github.com>
Date: Tue, 13 Oct 2020 18:20:10 -0400
Subject: [PATCH] fix (setup_helpers): fix bug in _add_lflags (#2586)

Fix minor bug in `_add_lflags` that allows a flag to be added more than once.
---
 pybind11/setup_helpers.py | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/pybind11/setup_helpers.py b/pybind11/setup_helpers.py
index ced8542e6..f2aee2e7c 100644
--- a/pybind11/setup_helpers.py
+++ b/pybind11/setup_helpers.py
@@ -99,7 +99,7 @@ class Pybind11Extension(_Extension):
 
     def _add_lflags(self, *flags):
         for flag in flags:
-            if flag not in self.extra_compile_args:
+            if flag not in self.extra_link_args:
                 self.extra_link_args.append(flag)
 
     def __init__(self, *args, **kwargs):