--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -1,5 +1,5 @@
 # Required cmake version
-cmake_minimum_required(VERSION 3.1.0)
+cmake_minimum_required(VERSION 3.30.0)
 
 # Put the include dirs which are in the source or build tree
 # before all other include dirs, so the headers in the sources
@@ -25,46 +25,6 @@
 include(ConfigureChecks.cmake)
 
 
-if ("${CMAKE_CXX_COMPILER_ID}" STREQUAL "Clang")
-	# using Clang
-
-	set( CMAKE_CXX_FLAGS  "${CMAKE_CXX_FLAGS} -std=c++11 -O3 -march=native -mtune=native -pedantic -stdlib=libc++")
-
-elseif ("${CMAKE_CXX_COMPILER_ID}" STREQUAL "GNU")
-	# using G++
-
-	if (CMAKE_CXX_COMPILER_VERSION VERSION_LESS 5.1)
-		message(FATAL_ERROR "G++ 5.1 or higher required")
-	endif()
-
-	set( CMAKE_CXX_FLAGS  "${CMAKE_CXX_FLAGS} -std=c++11 -O3 -march=native -mtune=native -pedantic -Wno-variadic-macros" )
-
-elseif ("${CMAKE_CXX_COMPILER_ID}" STREQUAL "MSVC")
-	# using Visual Studio
-
-	if (CMAKE_CXX_COMPILER_VERSION VERSION_LESS 19.0)
-		message(FATAL_ERROR "Visual Studio 2015 or higher required")
-	endif()
-
-	
-	# DEBUG compiler flags:
-	#	/Zi create debugging information PDB file
-	#	/Od disable optimizations
-	# 	/Oy- do not suppress frame pointers (recommended for debugging)
-	#	/MTd use statically linked, thread-safe, debug CRT libs (Magic Builder set this flag when build)
-	#
-	# RELEASE compiler flags:
-	#	/MT use statically linked, thread-safe CRT libs (Magic Builder set this flag when build)
-	# 	/GS- no Buffer Security Check
-	#
-	set(CMAKE_CXX_FLAGS_DEBUG "${CMAKE_CXX_FLAGS_DEBUG} /Zi /Od /Oy-")
-	set(CMAKE_CXX_FLAGS_RELEASE "${CMAKE_CXX_FLAGS_RELEASE} /Zi")
-
-	# Explaining of linker flags and why enable pdb with debug info for Release build is on:
-	#  https://www.wintellect.com/correctly-creating-native-c-release-build-pdbs
-	set(CMAKE_EXE_LINKER_FLAGS_RELEASE "${CMAKE_EXE_LINKER_FLAGS_RELEASE} /DEBUG /OPT:REF /OPT:ICF")
-endif()
-
 subdirs(src conf man files)
 if(WITH_LUA)
     add_subdirectory(lua)