From faaf83a49eb489b66756e08ab9fd361aa44101e5 Mon Sep 17 00:00:00 2001
From: Andreas Schneider <asn@cryptomilk.org>
Date: Mon, 17 Feb 2020 18:04:01 +0100
Subject: [PATCH] [release-0.4] cmake: Check for -fno-common and use it if
 available

---
 CMakeLists.txt | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/CMakeLists.txt b/CMakeLists.txt
index 2a75863509..b6dd57862b 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -314,6 +314,11 @@ if(UNIX)
   endif()
 endif()
 
+check_c_compiler_flag(-fno-common HAVE_FNO_COMMON)
+if (HAVE_FNO_COMMON)
+  add_compile_options(-fno-common)
+endif()
+
 check_c_compiler_flag(-fdiagnostics-color=auto HAS_DIAG_COLOR_FLAG)
 if(HAS_DIAG_COLOR_FLAG)
   if(CMAKE_GENERATOR MATCHES "Ninja")