From 178847613640e88d065195a82bc6813fe66bccc6 Mon Sep 17 00:00:00 2001
From: Username404 <charl.langouste@gmail.com>
Date: Sat, 20 Mar 2021 21:20:21 +0100
Subject: [PATCH] Use control flow protection if the compiler supports it in
 CMakeLists.txt.

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

diff --git a/CMakeLists.txt b/CMakeLists.txt
index f950aca..1fdb977 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -29,6 +29,11 @@ if((${CMAKE_CXX_COMPILER_ID} STREQUAL GNU) OR (${CMAKE_CXX_COMPILER_ID} STREQUAL
     endif()
     set(CMAKE_EXE_LINKER_FLAGS "-static-libgcc")
     set(CMAKE_CXX_FLAGS "-flto ${CMAKE_CXX_FLAGS} -fpie -pipe -fstack-protector-strong -fstack-clash-protection")
+    include(CheckCXXCompilerFlag)
+    CHECK_CXX_COMPILER_FLAG("-fcf-protection" CF_PROTECTION_SUPPORTED)
+    if (CF_PROTECTION_SUPPORTED)
+        set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -fcf-protection")
+    endif()
 endif()
 
 if (${CMAKE_CXX_COMPILER_ID} STREQUAL GNU)