--- cmake-3.19.5/Modules/GNUInstallDirs.cmake.orig
+++ cmake-3.19.5/Modules/GNUInstallDirs.cmake
@@ -224,28 +224,6 @@
       "Unable to determine default CMAKE_INSTALL_LIBDIR directory because no target architecture is known. "
       "Please enable at least one language before including GNUInstallDirs.")
   endif()
-  if(CMAKE_SYSTEM_NAME MATCHES "^(Linux|kFreeBSD|GNU)$"
-      AND NOT CMAKE_CROSSCOMPILING
-      AND NOT EXISTS "/etc/arch-release")
-    if (EXISTS "/etc/debian_version") # is this a debian system ?
-      if(CMAKE_LIBRARY_ARCHITECTURE)
-        if("${CMAKE_INSTALL_PREFIX}" MATCHES "^/usr/?$")
-          set(_LIBDIR_DEFAULT "lib/${CMAKE_LIBRARY_ARCHITECTURE}")
-        endif()
-        if(DEFINED _GNUInstallDirs_LAST_CMAKE_INSTALL_PREFIX
-            AND "${_GNUInstallDirs_LAST_CMAKE_INSTALL_PREFIX}" MATCHES "^/usr/?$")
-          set(__LAST_LIBDIR_DEFAULT "lib/${CMAKE_LIBRARY_ARCHITECTURE}")
-        endif()
-      endif()
-    else() # not debian, rely on CMAKE_SIZEOF_VOID_P:
-      if("${CMAKE_SIZEOF_VOID_P}" EQUAL "8")
-        set(_LIBDIR_DEFAULT "lib64")
-        if(DEFINED _GNUInstallDirs_LAST_CMAKE_INSTALL_PREFIX)
-          set(__LAST_LIBDIR_DEFAULT "lib64")
-        endif()
-      endif()
-    endif()
-  endif()
   if(NOT DEFINED CMAKE_INSTALL_LIBDIR)
     set(CMAKE_INSTALL_LIBDIR "${_LIBDIR_DEFAULT}" CACHE PATH "Object code libraries (${_LIBDIR_DEFAULT})")
   elseif(DEFINED __LAST_LIBDIR_DEFAULT