From 8c906f5228464951aa55379df537f58a13a1b598 Mon Sep 17 00:00:00 2001
From: jcorporation <mail@jcgames.de>
Date: Mon, 22 Apr 2024 16:28:16 +0200
Subject: [PATCH] Fix: do not add _FORTIFY_SOURCE if already defined

---
 CMakeLists.txt | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/CMakeLists.txt b/CMakeLists.txt
index 0d2c32169..81f84ff86 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -300,7 +300,9 @@ if(CMAKE_BUILD_TYPE MATCHES "(Debug|Release|RelWithDebInfo|MinSizeRel)")
 
   if(NOT MYMPD_ENABLE_ASAN AND NOT MYMPD_ENABLE_UBSAN)
     # incompatible with address sanitizers
-    add_compile_options("-D_FORTIFY_SOURCE=2")
+    if(NOT CMAKE_C_FLAGS MATCHES "_FORTIFY_SOURCE")
+      add_compile_options("-D_FORTIFY_SOURCE=2")
+    endif()
   endif()
 else()
   # if CMAKE_BUILD_TYPE is neither Release nor Debug,