From 911a98d54f974fc9e80879b6859a3748df4efc86 Mon Sep 17 00:00:00 2001
From: Konstantinos Margaritis <konstantinos@vectorcamp.gr>
Date: Fri, 16 Sep 2022 14:04:59 +0300
Subject: [PATCH] clang 13+ gives wrong -Wunused-but-set-variable error on
 nfa/mcclellancompile.cpp about total_daddy variable, disabling

---
 CMakeLists.txt | 9 ++++++++-
 1 file changed, 8 insertions(+), 1 deletion(-)

diff --git a/CMakeLists.txt b/CMakeLists.txt
index 57e986c9..5076f0a9 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -1,4 +1,5 @@
-cmake_minimum_required (VERSION 2.8.11)
+cmake_minimum_required (VERSION 2.8.12)
+
 project (vectorscan C CXX)
 
 set (HS_MAJOR_VERSION 5)
@@ -296,6 +297,12 @@ if (NOT RELEASE_BUILD)
     # release builds
     set(EXTRA_C_FLAGS "${EXTRA_C_FLAGS} -Werror")
     set(EXTRA_CXX_FLAGS "${EXTRA_CXX_FLAGS} -Werror")
+    if (CMAKE_COMPILER_IS_CLANG)
+	if (CMAKE_C_COMPILER_VERSION VERSION_GREATER "13.0")
+           set(EXTRA_C_FLAGS "${EXTRA_C_FLAGS} -Wno-unused-but-set-variable")
+           set(EXTRA_CXX_FLAGS "${EXTRA_CXX_FLAGS} -Wno-unused-but-set-variable")
+        endif()
+    endif()
 endif()
 
 if (DISABLE_ASSERTS)