diff -udHrN -- a/cmake_modules/compiler_options.cmake b/cmake_modules/compiler_options.cmake
--- a/cmake_modules/compiler_options.cmake	2021-06-26 21:07:31.000000000 +0200
+++ b/cmake_modules/compiler_options.cmake	2021-06-27 12:09:22.294653542 +0200
@@ -57,28 +57,3 @@
   # Set the possible values of build type for cmake-gui
   set_property(CACHE CMAKE_BUILD_TYPE PROPERTY STRINGS "Debug" "Release" "MinSizeRel" "RelWithDebInfo")
 endif()
-
-# compiler capabilities
-include(CheckCXXCompilerFlag)
-if(WIN32)
-  set(FIND_LIBRARY_USE_LIB64_PATHS FALSE)
-  #set(CMAKE_LIBRARY_ARCHITECTURE x86)
-else()
-  # c++11 options
-  check_cxx_compiler_flag(-std=c++11 HAS_CXX11_FLAG)
-  check_cxx_compiler_flag(-std=c++0x HAS_CXX0X_FLAG)
-
-  if(HAS_CXX11_FLAG)
-    set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -std=c++11")
-  elseif(HAS_CXX0X_FLAG)
-    set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -std=c++0x")
-  endif()
-
-  if(APPLE)
-    check_cxx_compiler_flag(-stdlib=libc++ HAS_LIBCXX11_FLAG)
-
-    if(HAS_LIBCXX11_FLAG)
-      set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -stdlib=libc++")
-    endif()
-  endif()
-endif()