diff -rupN --no-dereference libspatialite-5.0.1/configure.ac libspatialite-5.0.1-new/configure.ac
--- libspatialite-5.0.1/configure.ac	2021-03-08 08:57:18.748858216 +0100
+++ libspatialite-5.0.1-new/configure.ac	2021-03-08 08:57:18.751858215 +0100
@@ -96,7 +96,7 @@ AC_PROG_INSTALL
 AC_PROG_LN_S
 AC_PROG_MAKE_SET
 AC_LIBTOOL_WIN32_DLL
-AC_PROG_LIBTOOL
+LT_INIT
 
 # Checks for typedefs, structures, and compiler characteristics.
 AC_C_CONST